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Add generic OpenID Connect provider (OAuth2)

Browse source 
This adds the oauth2 provider `oidc`. It needs an additional argument, the OIDC discovery endpoint to figure out where the auth and token URLs are.

Configuration is similar to setting up the Google Authentication with these changes:

 * `OAUTH2_PROVIDER = oidc`
 * `OAUTH2_OIDC_DISCOVERY_ENDPOINT = https://auth.exampe.org/discovery`
This commit is contained in:
Patrick 2020-03-08 03:45:19 +01:00 committed by GitHub
parent 54602b55bb
commit 3e1e0b604f
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
88 changed files with 15856 additions and 155 deletions
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35
config/config_test.go
View file

@ -832,6 +832,41 @@ func TestDefaultOAuth2RedirectURLValue(t *testing.T) {
}
}
func TestOAuth2OidcDiscoveryEndpoint(t *testing.T) {
os.Clearenv()
os.Setenv("OAUTH2_OIDC_DISCOVERY_ENDPOINT", "http://example.org")
parser := NewParser()
opts, err := parser.ParseEnvironmentVariables()
if err != nil {
t.Fatalf(`Parsing failure: %v`, err)
}
expected := "http://example.org"
result := opts.OAuth2OidcDiscoveryEndpoint()
if result != expected {
t.Fatalf(`Unexpected OAUTH2_OIDC_DISCOVERY_ENDPOINT value, got %q instead of %q`, result, expected)
}
}
func TestDefaultOAuth2OidcDiscoveryEndpointValue(t *testing.T) {
os.Clearenv()
parser := NewParser()
opts, err := parser.ParseEnvironmentVariables()
if err != nil {
t.Fatalf(`Parsing failure: %v`, err)
}
expected := defaultOAuth2OidcDiscoveryEndpoint
result := opts.OAuth2OidcDiscoveryEndpoint()
if result != expected {
t.Fatalf(`Unexpected OAUTH2_REDIRECT_URL value, got %q instead of %q`, result, expected)
}
}
func TestOAuth2Provider(t *testing.T) {
os.Clearenv()
os.Setenv("OAUTH2_PROVIDER", "google")

9
config/options.go
View file

@ -40,6 +40,7 @@ const (
defaultOAuth2ClientID = ""
defaultOAuth2ClientSecret = ""
defaultOAuth2RedirectURL = ""
defaultOAuth2OidcDiscoveryEndpoint = ""
defaultOAuth2Provider = ""
defaultPocketConsumerKey = ""
defaultHTTPClientTimeout = 20
@ -80,6 +81,7 @@ type Options struct {
oauth2ClientID string
oauth2ClientSecret string
oauth2RedirectURL string
oauth2OidcDiscoveryEndpoint string
oauth2Provider string
pocketConsumerKey string
httpClientTimeout int
@ -121,6 +123,7 @@ func NewOptions() *Options {
oauth2ClientID: defaultOAuth2ClientID,
oauth2ClientSecret: defaultOAuth2ClientSecret,
oauth2RedirectURL: defaultOAuth2RedirectURL,
oauth2OidcDiscoveryEndpoint: defaultOAuth2OidcDiscoveryEndpoint,
oauth2Provider: defaultOAuth2Provider,
pocketConsumerKey: defaultPocketConsumerKey,
httpClientTimeout: defaultHTTPClientTimeout,
@ -250,6 +253,11 @@ func (o *Options) OAuth2RedirectURL() string {
return o.oauth2RedirectURL
}
// OAuth2OidcDiscoveryEndpoint returns the OAuth2 OIDC discovery endpoint.
func (o *Options) OAuth2OidcDiscoveryEndpoint() string {
return o.oauth2OidcDiscoveryEndpoint
}
// OAuth2Provider returns the name of the OAuth2 provider configured.
func (o *Options) OAuth2Provider() string {
return o.oauth2Provider
@ -348,6 +356,7 @@ func (o *Options) String() string {
builder.WriteString(fmt.Sprintf("OAUTH2_CLIENT_ID: %v\n", o.oauth2ClientID))
builder.WriteString(fmt.Sprintf("OAUTH2_CLIENT_SECRET: %v\n", o.oauth2ClientSecret))
builder.WriteString(fmt.Sprintf("OAUTH2_REDIRECT_URL: %v\n", o.oauth2RedirectURL))
builder.WriteString(fmt.Sprintf("OAUTH2_OIDC_DISCOVERY_ENDPOINT: %v\n", o.oauth2OidcDiscoveryEndpoint))
builder.WriteString(fmt.Sprintf("OAUTH2_PROVIDER: %v\n", o.oauth2Provider))
builder.WriteString(fmt.Sprintf("HTTP_CLIENT_TIMEOUT: %v\n", o.httpClientTimeout))
builder.WriteString(fmt.Sprintf("HTTP_CLIENT_MAX_BODY_SIZE: %v\n", o.httpClientMaxBodySize))

2
config/parser.go
View file

@ -152,6 +152,8 @@ func (p *Parser) parseLines(lines []string) (err error) {
p.opts.oauth2ClientSecret = parseString(value, defaultOAuth2ClientSecret)
case "OAUTH2_REDIRECT_URL":
p.opts.oauth2RedirectURL = parseString(value, defaultOAuth2RedirectURL)
case "OAUTH2_OIDC_DISCOVERY_ENDPOINT":
p.opts.oauth2OidcDiscoveryEndpoint = parseString(value, defaultOAuth2OidcDiscoveryEndpoint)
case "OAUTH2_PROVIDER":
p.opts.oauth2Provider = parseString(value, defaultOAuth2Provider)
case "HTTP_CLIENT_TIMEOUT":

8
go.mod
View file

@ -4,15 +4,21 @@ module miniflux.app
require (
github.com/PuerkitoBio/goquery v1.5.0
github.com/coreos/go-oidc v2.2.1+incompatible
github.com/golang/protobuf v1.3.2 // indirect
github.com/gorilla/mux v1.7.3
github.com/lib/pq v1.2.0
github.com/tdewolff/minify/v2 v2.5.2 // indirect
github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
github.com/stretchr/testify v1.4.0 // indirect
github.com/tdewolff/minify/v2 v2.7.2 // indirect
golang.org/x/crypto v0.0.0-20191112222119-e1110fd1c708
golang.org/x/lint v0.0.0-20200130185559-910be7a94367 // indirect
golang.org/x/net v0.0.0-20191112182307-2180aed22343
golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd // indirect
golang.org/x/tools v0.0.0-20200216192241-b320d3a0f5a2 // indirect
google.golang.org/appengine v1.6.2 // indirect
gopkg.in/square/go-jose.v2 v2.4.1 // indirect
)
go 1.11

42
go.sum
View file

@ -4,6 +4,10 @@ github.com/PuerkitoBio/goquery v1.5.0/go.mod h1:qD2PgZ9lccMbQlc7eEOjaeRlFQON7xY8
github.com/andybalholm/cascadia v1.0.0 h1:hOCXnnZ5A+3eVDX8pvgl4kofXv2ELss0bKcqRySc45o=
github.com/andybalholm/cascadia v1.0.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
github.com/cheekybits/is v0.0.0-20150225183255-68e9c0620927/go.mod h1:h/aW8ynjgkuj+NQRlZcDbAbM1ORAbXjXX77sX7T289U=
github.com/coreos/go-oidc v2.2.1+incompatible h1:mh48q/BqXqgjVHpy2ZY7WnWAbenxRjsz9N1i1YxjHAk=
github.com/coreos/go-oidc v2.2.1+incompatible/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
@ -16,20 +20,28 @@ github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2z
github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
github.com/matryer/try v0.0.0-20161228173917-9ac251b645a2/go.mod h1:0KeJpeMD6o+O4hW7qJOT7vyQPKrWmj26uf5wMc/IiIs=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAmPf4YLrFg6oQUotqHQeUNWwkvo7jZp1GLU=
github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/tdewolff/minify v2.3.6+incompatible h1:2hw5/9ZvxhWLvBUnHE06gElGYz+Jv9R4Eys0XUzItYo=
github.com/tdewolff/minify/v2 v2.5.2 h1:If/q1brvT+91oWiWnIMEGuFcwWtpB6AtLTxba78tvMs=
github.com/tdewolff/minify/v2 v2.5.2/go.mod h1:Q6mWHrmspbdRX0ZuUUoKIT8bDjVVXpIJ73ux7p7HZGg=
github.com/tdewolff/parse/v2 v2.3.9 h1:d8/K6XOLy5JVpLTG9Kx+SxA72rlm5OowFmVSVgtOlmM=
github.com/tdewolff/parse/v2 v2.3.9/go.mod h1:HansaqmN4I/U7L6/tUp0NcwT2tFO0F4EAWYGSDzkYNk=
github.com/tdewolff/test v1.0.0/go.mod h1:DiQUlutnqlEvdvhSn2LPGy4TFwRauAaYDsL+683RNX4=
github.com/tdewolff/test v1.0.4/go.mod h1:6DAvZliBAAnD7rhVgwaM7DE5/d9NMOAJ09SqYqeK4QE=
github.com/tdewolff/minify/v2 v2.7.2 h1:XA92QuWsrKji+TlBv03mPuzUpSWz97mE5nyISY84wEY=
github.com/tdewolff/minify/v2 v2.7.2/go.mod h1:BkDSm8aMMT0ALGmpt7j3Ra7nLUgZL0qhyrAHXwxcy5w=
github.com/tdewolff/parse/v2 v2.4.2 h1:Bu2Qv6wepkc+Ou7iB/qHjAhEImlAP5vedzlQRUdj3BI=
github.com/tdewolff/parse/v2 v2.4.2/go.mod h1:WzaJpRSbwq++EIQHYIRTpbYKNA3gn9it1Ik++q4zyho=
github.com/tdewolff/test v1.0.6/go.mod h1:6DAvZliBAAnD7rhVgwaM7DE5/d9NMOAJ09SqYqeK4QE=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472 h1:Gv7RPwsi3eZ2Fgewe3CBsuOebPwO27PoXzRpJPsvSSM=
golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191112222119-e1110fd1c708 h1:pXVtWnwHkrWD9ru3sDxY/qFK/bfc0egRovX91EjWjf4=
golang.org/x/crypto v0.0.0-20191112222119-e1110fd1c708/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/lint v0.0.0-20200130185559-910be7a94367 h1:0IiAsCRByjO2QjX7ZPkw5oU9x+n1YqRL802rjC0c3Aw=
golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -37,8 +49,7 @@ golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73r
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 h1:k7pJ2yAPLPgbskkFdhRCsA77k2fySZ1zf2zCjvQCiIM=
golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20191112182307-2180aed22343 h1:00ohfJ4K98s3m6BGUoBd8nyfp4Yl0GoIKvw5abItTjI=
golang.org/x/net v0.0.0-20191112182307-2180aed22343/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0=
@ -60,7 +71,18 @@ golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7 h1:EBZoQjiKKPaLbPrbpssUfuHtwM6KV/vb4U85g/cigFY=
golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
golang.org/x/tools v0.0.0-20200216192241-b320d3a0f5a2 h1:0sfSpGSa544Fwnbot3Oxq/U6SXqjty6Jy/3wRhVS7ig=
golang.org/x/tools v0.0.0-20200216192241-b320d3a0f5a2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.6.2 h1:j8RI1yW0SkI+paT6uGwMlrMI/6zwYA6/CFil8rxOzGI=
google.golang.org/appengine v1.6.2/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/square/go-jose.v2 v2.4.1 h1:H0TmLt7/KmzlrDOpa1F+zr0Tk90PbJYBfsVUmRLrf9Y=
gopkg.in/square/go-jose.v2 v2.4.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

52
locale/translations.go
View file

@ -159,9 +159,12 @@ var translations = map[string]string{
"page.users.is_admin": "Administrator",
"page.settings.title": "Einstellungen",
"page.settings.link_google_account": "Google Konto verknüpfen",
"page.settings.unlink_google_account": "Diese Kategorie existiert nicht für diesen Benutzer",
"page.settings.unlink_google_account": "Google Konto Verknüpfung entfernen",
"page.settings.link_oidc_account": "OpenID Connect Konto verknüpfen",
"page.settings.unlink_oidc_account": "OpenID Connect Konto Verknüpfung entfernen",
"page.login.title": "Anmeldung",
"page.login.google_signin": "Anmeldung mit Google",
"page.login.oidc_signin": "Anmeldung mit OpenID Connect",
"page.integrations.title": "Dienste",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpunkt",
@ -483,8 +486,11 @@ var translations = map[string]string{
"page.settings.title": "Settings",
"page.settings.link_google_account": "Link my Google account",
"page.settings.unlink_google_account": "Unlink my Google account",
"page.settings.link_oidc_account": "Link my OpenID Connect account",
"page.settings.unlink_oidc_account": "Unlink my OpenID Connect account",
"page.login.title": "Sign In",
"page.login.google_signin": "Sign in with Google",
"page.login.oidc_signin": "Sign in with OpenID Connect",
"page.integrations.title": "Integrations",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",
@ -786,8 +792,11 @@ var translations = map[string]string{
"page.settings.title": "Ajustes",
"page.settings.link_google_account": "Vincular mi cuenta de Google",
"page.settings.unlink_google_account": "Desvincular mi cuenta de Google",
"page.settings.link_oidc_account": "Vincular mi cuenta de OpenID Connect",
"page.settings.unlink_oidc_account": "Desvincular mi cuenta de OpenID Connect",
"page.login.title": "Iniciar sesión",
"page.login.google_signin": "Iniciar sesión con tu cuenta de Google",
"page.login.oidc_signin": "Iniciar sesión con tu cuenta de OpenID Connect",
"page.integrations.title": "Integraciones",
"page.integration.miniflux_api": "API de Miniflux",
"page.integration.miniflux_api_endpoint": "Extremo de API",
@ -1089,8 +1098,11 @@ var translations = map[string]string{
"page.settings.title": "Réglages",
"page.settings.link_google_account": "Associer mon compte Google",
"page.settings.unlink_google_account": "Dissocier mon compte Google",
"page.settings.link_oidc_account": "Associer mon compte OpenID Connect",
"page.settings.unlink_oidc_account": "Dissocier mon compte OpenID Connect",
"page.login.title": "Connexion",
"page.login.google_signin": "Se connecter avec Google",
"page.login.oidc_signin": "Se connecter avec OpenID Connect",
"page.integrations.title": "Intégrations",
"page.integration.miniflux_api": "API de Miniflux",
"page.integration.miniflux_api_endpoint": "Point de terminaison de l'API",
@ -1412,8 +1424,11 @@ var translations = map[string]string{
"page.settings.title": "Impostazioni",
"page.settings.link_google_account": "Collega il mio account Google",
"page.settings.unlink_google_account": "Scollega il mio account Google",
"page.settings.link_oidc_account": "Collega il mio account OpenID Connect",
"page.settings.unlink_oidc_account": "Scollega il mio account OpenID Connect",
"page.login.title": "Accedi",
"page.login.google_signin": "Accedi tramite Google",
"page.login.oidc_signin": "Accedi tramite OpenID Connect",
"page.integrations.title": "Integrazioni",
"page.integration.miniflux_api": "API di Miniflux",
"page.integration.miniflux_api_endpoint": "Endpoint dell'API di Miniflux",
@ -1715,8 +1730,11 @@ var translations = map[string]string{
"page.settings.title": "設定",
"page.settings.link_google_account": "Google アカウントと接続する",
"page.settings.unlink_google_account": "Google アカウントと接続を解除する",
"page.settings.link_oidc_account": "OpenID Connect アカウントと接続する",
"page.settings.unlink_oidc_account": "OpenID Connect アカウントと接続を解除する",
"page.login.title": "ログイン",
"page.login.google_signin": "Google アカウントでログイン",
"page.login.oidc_signin": "OpenID Connect アカウントでログイン",
"page.integrations.title": "関連付け",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",
@ -2019,6 +2037,9 @@ var translations = map[string]string{
"page.settings.title": "Instellingen",
"page.settings.link_google_account": "Koppel mijn Google-account",
"page.settings.unlink_google_account": "Ontkoppel mijn Google-account",
"page.settings.link_oidc_account": "Koppel mijn OpenID Connect-account",
"page.settings.unlink_oidc_account": "Ontkoppel mijn OpenID Connect-account",
"page.login.oidc_signin": "Inloggen via OpenID Connect",
"page.login.google_signin": "Inloggen via Google",
"page.integrations.title": "Integraties",
"page.integration.miniflux_api": "Miniflux API",
@ -2341,8 +2362,11 @@ var translations = map[string]string{
"page.settings.title": "Ustawienia",
"page.settings.link_google_account": "Połącz z moim kontem Google",
"page.settings.unlink_google_account": "Odłącz moje konto Google",
"page.settings.link_oidc_account": "Połącz z moim kontem OpenID Connect",
"page.settings.unlink_oidc_account": "Odłącz moje konto OpenID Connect",
"page.login.title": "Zaloguj się",
"page.login.google_signin": "Zaloguj przez Google",
"page.login.oidc_signin": "Zaloguj przez OpenID Connect",
"page.integrations.title": "Usługi",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "Punkt końcowy API",
@ -2670,8 +2694,11 @@ var translations = map[string]string{
"page.settings.title": "Настройки",
"page.settings.link_google_account": "Привязать мой Google аккаунт",
"page.settings.unlink_google_account": "Отвязать мой Google аккаунт",
"page.settings.link_oidc_account": "Привязать мой OpenID Connect аккаунт",
"page.settings.unlink_oidc_account": "Отвязать мой OpenID Connect аккаунт",
"page.login.title": "Войти",
"page.login.google_signin": "Войти с помощью Google",
"page.login.oidc_signin": "Войти с помощью OpenID Connect",
"page.integrations.title": "Интеграции",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "Конечная точка API",
@ -2977,8 +3004,11 @@ var translations = map[string]string{
"page.settings.title": "设置",
"page.settings.link_google_account": "关联我的 Google 账户",
"page.settings.unlink_google_account": "解除 Google 账号关联",
"page.settings.link_oidc_account": "关联我的 OpenID Connect 账户",
"page.settings.unlink_oidc_account": "解除 OpenID Connect 账号关联",
"page.login.title": "登陆",
"page.login.google_signin": "使用 Google 登陆",
"page.login.oidc_signin": "使用 OpenID Connect 登陆",
"page.integrations.title": "集成",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",
@ -3139,14 +3169,14 @@ var translations = map[string]string{
}
var translationsChecksums = map[string]string{
"de_DE": "75ccff01dcd27613e2d130c5b6abdb6bb2645029c93373c7b96d8754298002cd",
"en_US": "f6ac2959fbe86b273ca3cd95031741dbfc4db25e8b61d6b29b798a9faefae4c6",
"es_ES": "a3a494acf1864b2cc6573f9627e5bd2f07fa96a14a39619f310e87e66a4f2c01",
"fr_FR": "9162d348af1c6d30bb6f16bb85468d394a353e9def08cf77adc47404889e6e78",
"it_IT": "ad12b1282ed9b3d1a785f92af70c07f3d7aecf49e8a5d1f023742636b24a366b",
"ja_JP": "a9994611dc3b6a6dd763b6bd1c89bc7c5ec9985a04059f6c45342077d42a3e05",
"nl_NL": "54e9b6cd6758ee3e699028104f25704d6569e5ed8793ff17e817ad80f1ef7bd2",
"pl_PL": "6a95a4f7e8bce0d0d0e0f56d46e69b4577a44609d15511d9fa11c81cb981b5d7",
"ru_RU": "cb024cd742298206634be390a19b7371a797ab8484615a69af7d8fdbea9b58f8",
"zh_CN": "a5f32c5e4714bce8638f7fd19b6c3e54937d9ab00b08ab655076d7be35ef76bd",
"de_DE": "cc826a57cf4bf789df38db4f50626ad8c1c2b84ce34075c2c04de3d1f0dcd2d5",
"en_US": "f7e6db53cdbc2c0d959ac231dbacf0ef4d0ed81248944c4a4f8b83ef000f5349",
"es_ES": "cc727f62eef3a6cba51b65253d70a50161af35bf9c5366281b7984b2fc189961",
"fr_FR": "d3d1a4bf9aa8e4e24bae2f117507dcfc3cf00660a73b44a6c42356e8dbab8ae8",
"it_IT": "5ded991f2c70ec2268e6053bd84a77cf4136ebaea42013d3e79d594f38abb1b3",
"ja_JP": "110d7a7b1c888282b031de340e3318a62cdd62076b05a7fb49759f554c6dbe76",
"nl_NL": "a934ab4b1eff85580425a5859c31fcb227ae8926deba74df4e42b5d4feb67826",
"pl_PL": "6e80c36788723b9a7ff3f372e13a55c68d153727ec0abb56663cadbf6d6e1d9f",
"ru_RU": "d56f9e31f63731d23ce1ea2a8a4cb019f3ab282b23a1f494c47061daea523587",
"zh_CN": "4a5ca40790fceab88257f6742dc05294b79142bee8aad6fc87fbd479d1941292",
}

5
locale/translations/de_DE.json
View file

@ -154,9 +154,12 @@
"page.users.is_admin": "Administrator",
"page.settings.title": "Einstellungen",
"page.settings.link_google_account": "Google Konto verknüpfen",
"page.settings.unlink_google_account": "Diese Kategorie existiert nicht für diesen Benutzer",
"page.settings.unlink_google_account": "Google Konto Verknüpfung entfernen",
"page.settings.link_oidc_account": "OpenID Connect Konto verknüpfen",
"page.settings.unlink_oidc_account": "OpenID Connect Konto Verknüpfung entfernen",
"page.login.title": "Anmeldung",
"page.login.google_signin": "Anmeldung mit Google",
"page.login.oidc_signin": "Anmeldung mit OpenID Connect",
"page.integrations.title": "Dienste",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpunkt",

3
locale/translations/en_US.json
View file

@ -155,8 +155,11 @@
"page.settings.title": "Settings",
"page.settings.link_google_account": "Link my Google account",
"page.settings.unlink_google_account": "Unlink my Google account",
"page.settings.link_oidc_account": "Link my OpenID Connect account",
"page.settings.unlink_oidc_account": "Unlink my OpenID Connect account",
"page.login.title": "Sign In",
"page.login.google_signin": "Sign in with Google",
"page.login.oidc_signin": "Sign in with OpenID Connect",
"page.integrations.title": "Integrations",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",

3
locale/translations/es_ES.json
View file

@ -155,8 +155,11 @@
"page.settings.title": "Ajustes",
"page.settings.link_google_account": "Vincular mi cuenta de Google",
"page.settings.unlink_google_account": "Desvincular mi cuenta de Google",
"page.settings.link_oidc_account": "Vincular mi cuenta de OpenID Connect",
"page.settings.unlink_oidc_account": "Desvincular mi cuenta de OpenID Connect",
"page.login.title": "Iniciar sesión",
"page.login.google_signin": "Iniciar sesión con tu cuenta de Google",
"page.login.oidc_signin": "Iniciar sesión con tu cuenta de OpenID Connect",
"page.integrations.title": "Integraciones",
"page.integration.miniflux_api": "API de Miniflux",
"page.integration.miniflux_api_endpoint": "Extremo de API",

3
locale/translations/fr_FR.json
View file

@ -155,8 +155,11 @@
"page.settings.title": "Réglages",
"page.settings.link_google_account": "Associer mon compte Google",
"page.settings.unlink_google_account": "Dissocier mon compte Google",
"page.settings.link_oidc_account": "Associer mon compte OpenID Connect",
"page.settings.unlink_oidc_account": "Dissocier mon compte OpenID Connect",
"page.login.title": "Connexion",
"page.login.google_signin": "Se connecter avec Google",
"page.login.oidc_signin": "Se connecter avec OpenID Connect",
"page.integrations.title": "Intégrations",
"page.integration.miniflux_api": "API de Miniflux",
"page.integration.miniflux_api_endpoint": "Point de terminaison de l'API",

3
locale/translations/it_IT.json
View file

@ -155,8 +155,11 @@
"page.settings.title": "Impostazioni",
"page.settings.link_google_account": "Collega il mio account Google",
"page.settings.unlink_google_account": "Scollega il mio account Google",
"page.settings.link_oidc_account": "Collega il mio account OpenID Connect",
"page.settings.unlink_oidc_account": "Scollega il mio account OpenID Connect",
"page.login.title": "Accedi",
"page.login.google_signin": "Accedi tramite Google",
"page.login.oidc_signin": "Accedi tramite OpenID Connect",
"page.integrations.title": "Integrazioni",
"page.integration.miniflux_api": "API di Miniflux",
"page.integration.miniflux_api_endpoint": "Endpoint dell'API di Miniflux",

3
locale/translations/ja_JP.json
View file

@ -155,8 +155,11 @@
"page.settings.title": "設定",
"page.settings.link_google_account": "Google アカウントと接続する",
"page.settings.unlink_google_account": "Google アカウントと接続を解除する",
"page.settings.link_oidc_account": "OpenID Connect アカウントと接続する",
"page.settings.unlink_oidc_account": "OpenID Connect アカウントと接続を解除する",
"page.login.title": "ログイン",
"page.login.google_signin": "Google アカウントでログイン",
"page.login.oidc_signin": "OpenID Connect アカウントでログイン",
"page.integrations.title": "関連付け",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",

3
locale/translations/nl_NL.json
View file

@ -156,6 +156,9 @@
"page.settings.title": "Instellingen",
"page.settings.link_google_account": "Koppel mijn Google-account",
"page.settings.unlink_google_account": "Ontkoppel mijn Google-account",
"page.settings.link_oidc_account": "Koppel mijn OpenID Connect-account",
"page.settings.unlink_oidc_account": "Ontkoppel mijn OpenID Connect-account",
"page.login.oidc_signin": "Inloggen via OpenID Connect",
"page.login.google_signin": "Inloggen via Google",
"page.integrations.title": "Integraties",
"page.integration.miniflux_api": "Miniflux API",

3
locale/translations/pl_PL.json
View file

@ -157,8 +157,11 @@
"page.settings.title": "Ustawienia",
"page.settings.link_google_account": "Połącz z moim kontem Google",
"page.settings.unlink_google_account": "Odłącz moje konto Google",
"page.settings.link_oidc_account": "Połącz z moim kontem OpenID Connect",
"page.settings.unlink_oidc_account": "Odłącz moje konto OpenID Connect",
"page.login.title": "Zaloguj się",
"page.login.google_signin": "Zaloguj przez Google",
"page.login.oidc_signin": "Zaloguj przez OpenID Connect",
"page.integrations.title": "Usługi",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "Punkt końcowy API",

3
locale/translations/ru_RU.json
View file

@ -157,8 +157,11 @@
"page.settings.title": "Настройки",
"page.settings.link_google_account": "Привязать мой Google аккаунт",
"page.settings.unlink_google_account": "Отвязать мой Google аккаунт",
"page.settings.link_oidc_account": "Привязать мой OpenID Connect аккаунт",
"page.settings.unlink_oidc_account": "Отвязать мой OpenID Connect аккаунт",
"page.login.title": "Войти",
"page.login.google_signin": "Войти с помощью Google",
"page.login.oidc_signin": "Войти с помощью OpenID Connect",
"page.integrations.title": "Интеграции",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "Конечная точка API",

3
locale/translations/zh_CN.json
View file

@ -153,8 +153,11 @@
"page.settings.title": "设置",
"page.settings.link_google_account": "关联我的 Google 账户",
"page.settings.unlink_google_account": "解除 Google 账号关联",
"page.settings.link_oidc_account": "关联我的 OpenID Connect 账户",
"page.settings.unlink_oidc_account": "解除 OpenID Connect 账号关联",
"page.login.title": "登陆",
"page.login.google_signin": "使用 Google 登陆",
"page.login.oidc_signin": "使用 OpenID Connect 登陆",
"page.integrations.title": "集成",
"page.integration.miniflux_api": "Miniflux API",
"page.integration.miniflux_api_endpoint": "API Endpoint",

3
oauth2/google.go
View file

@ -31,9 +31,8 @@ func (g googleProvider) GetRedirectURL(state string) string {
return g.config().AuthCodeURL(state)
}
func (g googleProvider) GetProfile(code string) (*Profile, error) {
func (g googleProvider) GetProfile(ctx context.Context, code string) (*Profile, error) {
conf := g.config()
ctx := context.Background()
token, err := conf.Exchange(ctx, code)
if err != nil {
return nil, err

17
oauth2/manager.go
View file

@ -4,7 +4,11 @@
package oauth2 // import "miniflux.app/oauth2"
import "errors"
import (
"context"
"errors"
"miniflux.app/logger"
)
// Manager handles OAuth2 providers.
type Manager struct {
@ -26,8 +30,17 @@ func (m *Manager) AddProvider(name string, provider Provider) {
}
// NewManager returns a new Manager.
func NewManager(clientID, clientSecret, redirectURL string) *Manager {
func NewManager(ctx context.Context, clientID, clientSecret, redirectURL, oidcDiscoveryEndpoint string) *Manager {
m := &Manager{providers: make(map[string]Provider)}
m.AddProvider("google", newGoogleProvider(clientID, clientSecret, redirectURL))
if oidcDiscoveryEndpoint != "" {
if genericOidcProvider, err := newOidcProvider(ctx, clientID, clientSecret, redirectURL, oidcDiscoveryEndpoint); err != nil {
logger.Error("[OAuth2] failed to initialize OIDC provider: %v", err)
} else {
m.AddProvider("oidc", genericOidcProvider)
}
}
return m
}

61
oauth2/oidc.go Normal file
View file

@ -0,0 +1,61 @@
// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package oauth2 // import "miniflux.app/oauth2"
import (
"context"
"github.com/coreos/go-oidc"
"golang.org/x/oauth2"
)
type oidcProvider struct {
clientID string
clientSecret string
redirectURL string
provider *oidc.Provider
}
func (o oidcProvider) GetUserExtraKey() string {
return "oidc_id" // FIXME? add extra options key to allow multiple OIDC providers each with their own extra key?
}
func (o oidcProvider) GetRedirectURL(state string) string {
return o.config().AuthCodeURL(state)
}
func (o oidcProvider) GetProfile(ctx context.Context, code string) (*Profile, error) {
conf := o.config()
token, err := conf.Exchange(ctx, code)
if err != nil {
return nil, err
}
userInfo, err := o.provider.UserInfo(ctx, oauth2.StaticTokenSource(token))
if err != nil {
return nil, err
}
profile := &Profile{Key: o.GetUserExtraKey(), ID: userInfo.Subject, Username: userInfo.Email}
return profile, nil
}
func (o oidcProvider) config() *oauth2.Config {
return &oauth2.Config{
RedirectURL: o.redirectURL,
ClientID: o.clientID,
ClientSecret: o.clientSecret,
Scopes: []string{"openid", "email"},
Endpoint: o.provider.Endpoint(),
}
}
func newOidcProvider(ctx context.Context, clientID, clientSecret, redirectURL, discoveryEndpoint string) (*oidcProvider, error) {
provider, err := oidc.NewProvider(ctx, discoveryEndpoint)
if err != nil {
return nil, err
}
return &oidcProvider{clientID: clientID, clientSecret: clientSecret, redirectURL: redirectURL, provider: provider}, nil
}

3
oauth2/provider.go
View file

@ -3,10 +3,11 @@
// license that can be found in the LICENSE file.
package oauth2 // import "miniflux.app/oauth2"
import "context"
// Provider is an interface for OAuth2 providers.
type Provider interface {
GetUserExtraKey() string
GetRedirectURL(state string) string
GetProfile(code string) (*Profile, error)
GetProfile(ctx context.Context, code string) (*Profile, error)
}

4
template/html/login.html
View file

@ -23,6 +23,10 @@
<div class="oauth2">
<a href="{{ route "oauth2Redirect" "provider" "google" }}">{{ t "page.login.google_signin" }}</a>
</div>
{{ else if hasOAuth2Provider "oidc" }}
<div class="oauth2">
<a href="{{ route "oauth2Redirect" "provider" "oidc" }}">{{ t "page.login.oidc_signin" }}</a>
</div>
{{ end }}
</section>
<footer id="prompt-home-screen">

8
template/html/settings.html
View file

@ -64,6 +64,14 @@
<a href="{{ route "oauth2Redirect" "provider" "google" }}">{{ t "page.settings.link_google_account" }}</a>
{{ end }}
</div>
{{ else if hasOAuth2Provider "oidc" }}
<div class="panel">
{{ if hasKey .user.Extra "oidc_id" }}
<a href="{{ route "oauth2Unlink" "provider" "oidc" }}">{{ t "page.settings.unlink_oidc_account" }}</a>
{{ else }}
<a href="{{ route "oauth2Redirect" "provider" "oidc" }}">{{ t "page.settings.link_oidc_account" }}</a>
{{ end }}
</div>
{{ end }}
{{ end }}

16
template/views.go
View file

@ -1127,6 +1127,10 @@ var templateViewsMap = map[string]string{
<div class="oauth2">
<a href="{{ route "oauth2Redirect" "provider" "google" }}">{{ t "page.login.google_signin" }}</a>
</div>
{{ else if hasOAuth2Provider "oidc" }}
<div class="oauth2">
<a href="{{ route "oauth2Redirect" "provider" "oidc" }}">{{ t "page.login.oidc_signin" }}</a>
</div>
{{ end }}
</section>
<footer id="prompt-home-screen">
@ -1270,6 +1274,14 @@ var templateViewsMap = map[string]string{
<a href="{{ route "oauth2Redirect" "provider" "google" }}">{{ t "page.settings.link_google_account" }}</a>
{{ end }}
</div>
{{ else if hasOAuth2Provider "oidc" }}
<div class="panel">
{{ if hasKey .user.Extra "oidc_id" }}
<a href="{{ route "oauth2Unlink" "provider" "oidc" }}">{{ t "page.settings.unlink_oidc_account" }}</a>
{{ else }}
<a href="{{ route "oauth2Redirect" "provider" "oidc" }}">{{ t "page.settings.link_oidc_account" }}</a>
{{ end }}
</div>
{{ end }}
{{ end }}
@ -1416,10 +1428,10 @@ var templateViewsMapChecksums = map[string]string{
"history_entries": "87e17d39de70eb3fdbc4000326283be610928758eae7924e4b08dcb446f3b6a9",
"import": "1b59b3bd55c59fcbc6fbb346b414dcdd26d1b4e0c307e437bb58b3f92ef01ad1",
"integrations": "30329452743b35c668278f519245fd9be05c1726856e0384ba542f7c307f2788",
"login": "0657174d13229bb6d0bc470ccda06bb1f15c1af65c86b20b41ffa5c819eef0cc",
"login": "79ff2ca488c0a19b37c8fa227a21f73e94472eb357a51a077197c852f7713f11",
"search_entries": "274950d03298c24f3942e209c0faed580a6d57be9cf76a6c236175a7e766ac6a",
"sessions": "5d5c677bddbd027e0b0c9f7a0dd95b66d9d95b4e130959f31fb955b926c2201c",
"settings": "56f7c06f24eef317353582b0191aa9a5985f46ed755accf97e723ceb4bba4469",
"settings": "d949ecdd28a33eadafaa3a727e548b3466c5aa44b0a4bbf86cc49784704ff7f6",
"unread_entries": "e38f7ffce17dfad3151b08cd33771a2cefe8ca9db42df04fc98bd1d675dd6075",
"users": "d7ff52efc582bbad10504f4a04fa3adcc12d15890e45dff51cac281e0c446e45",
}

5
ui/oauth2.go
View file

@ -5,14 +5,17 @@
package ui // import "miniflux.app/ui"
import (
"context"
"miniflux.app/config"
"miniflux.app/oauth2"
)
func getOAuth2Manager() *oauth2.Manager {
func getOAuth2Manager(ctx context.Context) *oauth2.Manager {
return oauth2.NewManager(
ctx,
config.Opts.OAuth2ClientID(),
config.Opts.OAuth2ClientSecret(),
config.Opts.OAuth2RedirectURL(),
config.Opts.OAuth2OidcDiscoveryEndpoint(),
)
}

4
ui/oauth2_callback.go
View file

@ -44,14 +44,14 @@ func (h *handler) oauth2Callback(w http.ResponseWriter, r *http.Request) {
return
}
authProvider, err := getOAuth2Manager().Provider(provider)
authProvider, err := getOAuth2Manager(r.Context()).Provider(provider)
if err != nil {
logger.Error("[OAuth2] %v", err)
html.Redirect(w, r, route.Path(h.router, "login"))
return
}
profile, err := authProvider.GetProfile(code)
profile, err := authProvider.GetProfile(r.Context(), code)
if err != nil {
logger.Error("[OAuth2] %v", err)
html.Redirect(w, r, route.Path(h.router, "login"))

2
ui/oauth2_redirect.go
View file

@ -24,7 +24,7 @@ func (h *handler) oauth2Redirect(w http.ResponseWriter, r *http.Request) {
return
}
authProvider, err := getOAuth2Manager().Provider(provider)
authProvider, err := getOAuth2Manager(r.Context()).Provider(provider)
if err != nil {
logger.Error("[OAuth2] %v", err)
html.Redirect(w, r, route.Path(h.router, "login"))

2
ui/oauth2_unlink.go
View file

@ -24,7 +24,7 @@ func (h *handler) oauth2Unlink(w http.ResponseWriter, r *http.Request) {
return
}
authProvider, err := getOAuth2Manager().Provider(provider)
authProvider, err := getOAuth2Manager(r.Context()).Provider(provider)
if err != nil {
logger.Error("[OAuth2] %v", err)
html.Redirect(w, r, route.Path(h.router, "settings"))

12
ui/static/css.go
View file

@ -12,10 +12,10 @@ var Stylesheets = map[string]string{
}
var StylesheetsChecksums = map[string]string{
"dark_sans_serif": "8e97eef07e3b3485c91c5ff20a66097c9bd19c3a88276292c4abe005cd124129",
"dark_serif": "cad3534b9c462c420c8bb49a5826535ce5c4289a425190be18755f45271aabec",
"light_sans_serif": "f7ae30334715023100d836c7475864b1ba1f3e785ace032904f8970c7818990f",
"light_serif": "cfd236de9e7801e68d1717a205ac554ecf903d4434ec2bab2c591afab5ebd881",
"system_sans_serif": "ae41c90c530ddbad31d5839f5030cfd1651a52be89b54f1dc37b528c23912a83",
"system_serif": "62e54111ede72f03710f1c81bccfa56a7b16d4bc740e98a1a4292345db343757",
"dark_sans_serif": "1a35631e5a9122fe56fcdbc9518d841a65867fa8c8e4e542a267efe0293c7d64",
"dark_serif": "3ca862a6da6bd54060be6961d8cd300ac28527232ad8cde6b80d5c2038bfee3c",
"light_sans_serif": "034a35ad21066e76befe6411ad527255945ef5de717d46119c47616e38506291",
"light_serif": "df4bdba6508b874aae4ebe27f487b6938b7ed906ba9a0f0eb9f75a6130197ba8",
"system_sans_serif": "6ad4ebfc205825448866dd5ae97bddc6be0517f03d0c6360fd17266dddf84897",
"system_serif": "44d72d100c0121f9cb95aae70923acd34960595a114aa697b14d07e31f5434ca",
}

2
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@ -0,0 +1,2 @@
/bin
/gopath

16
vendor/github.com/coreos/go-oidc/.travis.yml generated vendored Normal file
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@ -0,0 +1,16 @@
language: go
go:
- "1.12"
- "1.13"
install:
- go get -v -t github.com/coreos/go-oidc/...
- go get golang.org/x/tools/cmd/cover
- go get golang.org/x/lint/golint
script:
- ./test
notifications:
email: false

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@ -0,0 +1,71 @@
# How to Contribute
CoreOS projects are [Apache 2.0 licensed](LICENSE) and accept contributions via
GitHub pull requests. This document outlines some of the conventions on
development workflow, commit message formatting, contact points and other
resources to make it easier to get your contribution accepted.
# Certificate of Origin
By contributing to this project you agree to the Developer Certificate of
Origin (DCO). This document was created by the Linux Kernel community and is a
simple statement that you, as a contributor, have the legal right to make the
contribution. See the [DCO](DCO) file for details.
# Email and Chat
The project currently uses the general CoreOS email list and IRC channel:
- Email: [coreos-dev](https://groups.google.com/forum/#!forum/coreos-dev)
- IRC: #[coreos](irc://irc.freenode.org:6667/#coreos) IRC channel on freenode.org
Please avoid emailing maintainers found in the MAINTAINERS file directly. They
are very busy and read the mailing lists.
## Getting Started
- Fork the repository on GitHub
- Read the [README](README.md) for build and test instructions
- Play with the project, submit bugs, submit patches!
## Contribution Flow
This is a rough outline of what a contributor's workflow looks like:
- Create a topic branch from where you want to base your work (usually master).
- Make commits of logical units.
- Make sure your commit messages are in the proper format (see below).
- Push your changes to a topic branch in your fork of the repository.
- Make sure the tests pass, and add any new tests as appropriate.
- Submit a pull request to the original repository.
Thanks for your contributions!
### Format of the Commit Message
We follow a rough convention for commit messages that is designed to answer two
questions: what changed and why. The subject line should feature the what and
the body of the commit should describe the why.
```
scripts: add the test-cluster command
this uses tmux to setup a test cluster that you can easily kill and
start for debugging.
Fixes #38
```
The format can be described more formally as follows:
```
<subsystem>: <what changed>
<BLANK LINE>
<why this change was made>
<BLANK LINE>
<footer>
```
The first line is the subject and should be no longer than 70 characters, the
second line is always blank, and other lines should be wrapped at 80 characters.
This allows the message to be easier to read on GitHub as well as in various
git tools.

36
vendor/github.com/coreos/go-oidc/DCO generated vendored Normal file
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@ -0,0 +1,36 @@
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.

202
vendor/github.com/coreos/go-oidc/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
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Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

3
vendor/github.com/coreos/go-oidc/MAINTAINERS generated vendored Normal file
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@ -0,0 +1,3 @@
Eric Chiang <ericchiang@google.com> (@ericchiang)
Mike Danese <mikedanese@google.com> (@mikedanese)
Rithu Leena John <rjohn@redhat.com> (@rithujohn191)

5
vendor/github.com/coreos/go-oidc/NOTICE generated vendored Normal file
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@ -0,0 +1,5 @@
CoreOS Project
Copyright 2014 CoreOS, Inc
This product includes software developed at CoreOS, Inc.
(http://www.coreos.com/).

72
vendor/github.com/coreos/go-oidc/README.md generated vendored Normal file
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@ -0,0 +1,72 @@
# go-oidc
[![GoDoc](https://godoc.org/github.com/coreos/go-oidc?status.svg)](https://godoc.org/github.com/coreos/go-oidc)
[![Build Status](https://travis-ci.org/coreos/go-oidc.png?branch=master)](https://travis-ci.org/coreos/go-oidc)
## OpenID Connect support for Go
This package enables OpenID Connect support for the [golang.org/x/oauth2](https://godoc.org/golang.org/x/oauth2) package.
```go
provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
if err != nil {
// handle error
}
// Configure an OpenID Connect aware OAuth2 client.
oauth2Config := oauth2.Config{
ClientID: clientID,
ClientSecret: clientSecret,
RedirectURL: redirectURL,
// Discovery returns the OAuth2 endpoints.
Endpoint: provider.Endpoint(),
// "openid" is a required scope for OpenID Connect flows.
Scopes: []string{oidc.ScopeOpenID, "profile", "email"},
}
```
OAuth2 redirects are unchanged.
```go
func handleRedirect(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, oauth2Config.AuthCodeURL(state), http.StatusFound)
}
```
The on responses, the provider can be used to verify ID Tokens.
```go
var verifier = provider.Verifier(&oidc.Config{ClientID: clientID})
func handleOAuth2Callback(w http.ResponseWriter, r *http.Request) {
// Verify state and errors.
oauth2Token, err := oauth2Config.Exchange(ctx, r.URL.Query().Get("code"))
if err != nil {
// handle error
}
// Extract the ID Token from OAuth2 token.
rawIDToken, ok := oauth2Token.Extra("id_token").(string)
if !ok {
// handle missing token
}
// Parse and verify ID Token payload.
idToken, err := verifier.Verify(ctx, rawIDToken)
if err != nil {
// handle error
}
// Extract custom claims
var claims struct {
Email string `json:"email"`
Verified bool `json:"email_verified"`
}
if err := idToken.Claims(&claims); err != nil {
// handle error
}
}
```

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vendor/github.com/coreos/go-oidc/code-of-conduct.md generated vendored Normal file
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@ -0,0 +1,61 @@
## CoreOS Community Code of Conduct
### Contributor Code of Conduct
As contributors and maintainers of this project, and in the interest of
fostering an open and welcoming community, we pledge to respect all people who
contribute through reporting issues, posting feature requests, updating
documentation, submitting pull requests or patches, and other activities.
We are committed to making participation in this project a harassment-free
experience for everyone, regardless of level of experience, gender, gender
identity and expression, sexual orientation, disability, personal appearance,
body size, race, ethnicity, age, religion, or nationality.
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery
* Personal attacks
* Trolling or insulting/derogatory comments
* Public or private harassment
* Publishing others' private information, such as physical or electronic addresses, without explicit permission
* Other unethical or unprofessional conduct.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct. By adopting this Code of Conduct,
project maintainers commit themselves to fairly and consistently applying these
principles to every aspect of managing this project. Project maintainers who do
not follow or enforce the Code of Conduct may be permanently removed from the
project team.
This code of conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting a project maintainer, Brandon Philips
<brandon.philips@coreos.com>, and/or Rithu John <rithu.john@coreos.com>.
This Code of Conduct is adapted from the Contributor Covenant
(http://contributor-covenant.org), version 1.2.0, available at
http://contributor-covenant.org/version/1/2/0/
### CoreOS Events Code of Conduct
CoreOS events are working conferences intended for professional networking and
collaboration in the CoreOS community. Attendees are expected to behave
according to professional standards and in accordance with their employer’s
policies on appropriate workplace behavior.
While at CoreOS events or related social networking opportunities, attendees
should not engage in discriminatory or offensive speech or actions including
but not limited to gender, sexuality, race, age, disability, or religion.
Speakers should be especially aware of these concerns.
CoreOS does not condone any statements by speakers contrary to these standards.
CoreOS reserves the right to deny entrance and/or eject from an event (without
refund) any individual found to be engaging in discriminatory or offensive
speech or actions.
Please bring any concerns to the immediate attention of designated on-site
staff, Brandon Philips <brandon.philips@coreos.com>, and/or Rithu John <rithu.john@coreos.com>.

20
vendor/github.com/coreos/go-oidc/jose.go generated vendored Normal file
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@ -0,0 +1,20 @@
// +build !golint
// Don't lint this file. We don't want to have to add a comment to each constant.
package oidc
const (
// JOSE asymmetric signing algorithm values as defined by RFC 7518
//
// see: https://tools.ietf.org/html/rfc7518#section-3.1
RS256 = "RS256" // RSASSA-PKCS-v1.5 using SHA-256
RS384 = "RS384" // RSASSA-PKCS-v1.5 using SHA-384
RS512 = "RS512" // RSASSA-PKCS-v1.5 using SHA-512
ES256 = "ES256" // ECDSA using P-256 and SHA-256
ES384 = "ES384" // ECDSA using P-384 and SHA-384
ES512 = "ES512" // ECDSA using P-521 and SHA-512
PS256 = "PS256" // RSASSA-PSS using SHA256 and MGF1-SHA256
PS384 = "PS384" // RSASSA-PSS using SHA384 and MGF1-SHA384
PS512 = "PS512" // RSASSA-PSS using SHA512 and MGF1-SHA512
)

228
vendor/github.com/coreos/go-oidc/jwks.go generated vendored Normal file
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@ -0,0 +1,228 @@
package oidc
import (
"context"
"errors"
"fmt"
"io/ioutil"
"net/http"
"sync"
"time"
"github.com/pquerna/cachecontrol"
jose "gopkg.in/square/go-jose.v2"
)
// keysExpiryDelta is the allowed clock skew between a client and the OpenID Connect
// server.
//
// When keys expire, they are valid for this amount of time after.
//
// If the keys have not expired, and an ID Token claims it was signed by a key not in
// the cache, if and only if the keys expire in this amount of time, the keys will be
// updated.
const keysExpiryDelta = 30 * time.Second
// NewRemoteKeySet returns a KeySet that can validate JSON web tokens by using HTTP
// GETs to fetch JSON web token sets hosted at a remote URL. This is automatically
// used by NewProvider using the URLs returned by OpenID Connect discovery, but is
// exposed for providers that don't support discovery or to prevent round trips to the
// discovery URL.
//
// The returned KeySet is a long lived verifier that caches keys based on cache-control
// headers. Reuse a common remote key set instead of creating new ones as needed.
//
// The behavior of the returned KeySet is undefined once the context is canceled.
func NewRemoteKeySet(ctx context.Context, jwksURL string) KeySet {
return newRemoteKeySet(ctx, jwksURL, time.Now)
}
func newRemoteKeySet(ctx context.Context, jwksURL string, now func() time.Time) *remoteKeySet {
if now == nil {
now = time.Now
}
return &remoteKeySet{jwksURL: jwksURL, ctx: ctx, now: now}
}
type remoteKeySet struct {
jwksURL string
ctx context.Context
now func() time.Time
// guard all other fields
mu sync.Mutex
// inflight suppresses parallel execution of updateKeys and allows
// multiple goroutines to wait for its result.
inflight *inflight
// A set of cached keys and their expiry.
cachedKeys []jose.JSONWebKey
expiry time.Time
}
// inflight is used to wait on some in-flight request from multiple goroutines.
type inflight struct {
doneCh chan struct{}
keys []jose.JSONWebKey
err error
}
func newInflight() *inflight {
return &inflight{doneCh: make(chan struct{})}
}
// wait returns a channel that multiple goroutines can receive on. Once it returns
// a value, the inflight request is done and result() can be inspected.
func (i *inflight) wait() <-chan struct{} {
return i.doneCh
}
// done can only be called by a single goroutine. It records the result of the
// inflight request and signals other goroutines that the result is safe to
// inspect.
func (i *inflight) done(keys []jose.JSONWebKey, err error) {
i.keys = keys
i.err = err
close(i.doneCh)
}
// result cannot be called until the wait() channel has returned a value.
func (i *inflight) result() ([]jose.JSONWebKey, error) {
return i.keys, i.err
}
func (r *remoteKeySet) VerifySignature(ctx context.Context, jwt string) ([]byte, error) {
jws, err := jose.ParseSigned(jwt)
if err != nil {
return nil, fmt.Errorf("oidc: malformed jwt: %v", err)
}
return r.verify(ctx, jws)
}
func (r *remoteKeySet) verify(ctx context.Context, jws *jose.JSONWebSignature) ([]byte, error) {
// We don't support JWTs signed with multiple signatures.
keyID := ""
for _, sig := range jws.Signatures {
keyID = sig.Header.KeyID
break
}
keys, expiry := r.keysFromCache()
// Don't check expiry yet. This optimizes for when the provider is unavailable.
for _, key := range keys {
if keyID == "" || key.KeyID == keyID {
if payload, err := jws.Verify(&key); err == nil {
return payload, nil
}
}
}
if !r.now().Add(keysExpiryDelta).After(expiry) {
// Keys haven't expired, don't refresh.
return nil, errors.New("failed to verify id token signature")
}
keys, err := r.keysFromRemote(ctx)
if err != nil {
return nil, fmt.Errorf("fetching keys %v", err)
}
for _, key := range keys {
if keyID == "" || key.KeyID == keyID {
if payload, err := jws.Verify(&key); err == nil {
return payload, nil
}
}
}
return nil, errors.New("failed to verify id token signature")
}
func (r *remoteKeySet) keysFromCache() (keys []jose.JSONWebKey, expiry time.Time) {
r.mu.Lock()
defer r.mu.Unlock()
return r.cachedKeys, r.expiry
}
// keysFromRemote syncs the key set from the remote set, records the values in the
// cache, and returns the key set.
func (r *remoteKeySet) keysFromRemote(ctx context.Context) ([]jose.JSONWebKey, error) {
// Need to lock to inspect the inflight request field.
r.mu.Lock()
// If there's not a current inflight request, create one.
if r.inflight == nil {
r.inflight = newInflight()
// This goroutine has exclusive ownership over the current inflight
// request. It releases the resource by nil'ing the inflight field
// once the goroutine is done.
go func() {
// Sync keys and finish inflight when that's done.
keys, expiry, err := r.updateKeys()
r.inflight.done(keys, err)
// Lock to update the keys and indicate that there is no longer an
// inflight request.
r.mu.Lock()
defer r.mu.Unlock()
if err == nil {
r.cachedKeys = keys
r.expiry = expiry
}
// Free inflight so a different request can run.
r.inflight = nil
}()
}
inflight := r.inflight
r.mu.Unlock()
select {
case <-ctx.Done():
return nil, ctx.Err()
case <-inflight.wait():
return inflight.result()
}
}
func (r *remoteKeySet) updateKeys() ([]jose.JSONWebKey, time.Time, error) {
req, err := http.NewRequest("GET", r.jwksURL, nil)
if err != nil {
return nil, time.Time{}, fmt.Errorf("oidc: can't create request: %v", err)
}
resp, err := doRequest(r.ctx, req)
if err != nil {
return nil, time.Time{}, fmt.Errorf("oidc: get keys failed %v", err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, time.Time{}, fmt.Errorf("unable to read response body: %v", err)
}
if resp.StatusCode != http.StatusOK {
return nil, time.Time{}, fmt.Errorf("oidc: get keys failed: %s %s", resp.Status, body)
}
var keySet jose.JSONWebKeySet
err = unmarshalResp(resp, body, &keySet)
if err != nil {
return nil, time.Time{}, fmt.Errorf("oidc: failed to decode keys: %v %s", err, body)
}
// If the server doesn't provide cache control headers, assume the
// keys expire immediately.
expiry := r.now()
_, e, err := cachecontrol.CachableResponse(req, resp, cachecontrol.Options{})
if err == nil && e.After(expiry) {
expiry = e
}
return keySet.Keys, expiry, nil
}

409
vendor/github.com/coreos/go-oidc/oidc.go generated vendored Normal file
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// Package oidc implements OpenID Connect client logic for the golang.org/x/oauth2 package.
package oidc
import (
"context"
"crypto/sha256"
"crypto/sha512"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"hash"
"io/ioutil"
"mime"
"net/http"
"strings"
"time"
"golang.org/x/oauth2"
jose "gopkg.in/square/go-jose.v2"
)
const (
// ScopeOpenID is the mandatory scope for all OpenID Connect OAuth2 requests.
ScopeOpenID = "openid"
// ScopeOfflineAccess is an optional scope defined by OpenID Connect for requesting
// OAuth2 refresh tokens.
//
// Support for this scope differs between OpenID Connect providers. For instance
// Google rejects it, favoring appending "access_type=offline" as part of the
// authorization request instead.
//
// See: https://openid.net/specs/openid-connect-core-1_0.html#OfflineAccess
ScopeOfflineAccess = "offline_access"
)
var (
errNoAtHash = errors.New("id token did not have an access token hash")
errInvalidAtHash = errors.New("access token hash does not match value in ID token")
)
// ClientContext returns a new Context that carries the provided HTTP client.
//
// This method sets the same context key used by the golang.org/x/oauth2 package,
// so the returned context works for that package too.
//
// myClient := &http.Client{}
// ctx := oidc.ClientContext(parentContext, myClient)
//
// // This will use the custom client
// provider, err := oidc.NewProvider(ctx, "https://accounts.example.com")
//
func ClientContext(ctx context.Context, client *http.Client) context.Context {
return context.WithValue(ctx, oauth2.HTTPClient, client)
}
func doRequest(ctx context.Context, req *http.Request) (*http.Response, error) {
client := http.DefaultClient
if c, ok := ctx.Value(oauth2.HTTPClient).(*http.Client); ok {
client = c
}
return client.Do(req.WithContext(ctx))
}
// Provider represents an OpenID Connect server's configuration.
type Provider struct {
issuer string
authURL string
tokenURL string
userInfoURL string
algorithms []string
// Raw claims returned by the server.
rawClaims []byte
remoteKeySet KeySet
}
type cachedKeys struct {
keys []jose.JSONWebKey
expiry time.Time
}
type providerJSON struct {
Issuer string `json:"issuer"`
AuthURL string `json:"authorization_endpoint"`
TokenURL string `json:"token_endpoint"`
JWKSURL string `json:"jwks_uri"`
UserInfoURL string `json:"userinfo_endpoint"`
Algorithms []string `json:"id_token_signing_alg_values_supported"`
}
// supportedAlgorithms is a list of algorithms explicitly supported by this
// package. If a provider supports other algorithms, such as HS256 or none,
// those values won't be passed to the IDTokenVerifier.
var supportedAlgorithms = map[string]bool{
RS256: true,
RS384: true,
RS512: true,
ES256: true,
ES384: true,
ES512: true,
PS256: true,
PS384: true,
PS512: true,
}
// NewProvider uses the OpenID Connect discovery mechanism to construct a Provider.
//
// The issuer is the URL identifier for the service. For example: "https://accounts.google.com"
// or "https://login.salesforce.com".
func NewProvider(ctx context.Context, issuer string) (*Provider, error) {
wellKnown := strings.TrimSuffix(issuer, "/") + "/.well-known/openid-configuration"
req, err := http.NewRequest("GET", wellKnown, nil)
if err != nil {
return nil, err
}
resp, err := doRequest(ctx, req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("unable to read response body: %v", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("%s: %s", resp.Status, body)
}
var p providerJSON
err = unmarshalResp(resp, body, &p)
if err != nil {
return nil, fmt.Errorf("oidc: failed to decode provider discovery object: %v", err)
}
if p.Issuer != issuer {
return nil, fmt.Errorf("oidc: issuer did not match the issuer returned by provider, expected %q got %q", issuer, p.Issuer)
}
var algs []string
for _, a := range p.Algorithms {
if supportedAlgorithms[a] {
algs = append(algs, a)
}
}
return &Provider{
issuer: p.Issuer,
authURL: p.AuthURL,
tokenURL: p.TokenURL,
userInfoURL: p.UserInfoURL,
algorithms: algs,
rawClaims: body,
remoteKeySet: NewRemoteKeySet(ctx, p.JWKSURL),
}, nil
}
// Claims unmarshals raw fields returned by the server during discovery.
//
// var claims struct {
// ScopesSupported []string `json:"scopes_supported"`
// ClaimsSupported []string `json:"claims_supported"`
// }
//
// if err := provider.Claims(&claims); err != nil {
// // handle unmarshaling error
// }
//
// For a list of fields defined by the OpenID Connect spec see:
// https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata
func (p *Provider) Claims(v interface{}) error {
if p.rawClaims == nil {
return errors.New("oidc: claims not set")
}
return json.Unmarshal(p.rawClaims, v)
}
// Endpoint returns the OAuth2 auth and token endpoints for the given provider.
func (p *Provider) Endpoint() oauth2.Endpoint {
return oauth2.Endpoint{AuthURL: p.authURL, TokenURL: p.tokenURL}
}
// UserInfo represents the OpenID Connect userinfo claims.
type UserInfo struct {
Subject string `json:"sub"`
Profile string `json:"profile"`
Email string `json:"email"`
EmailVerified bool `json:"email_verified"`
claims []byte
}
// Claims unmarshals the raw JSON object claims into the provided object.
func (u *UserInfo) Claims(v interface{}) error {
if u.claims == nil {
return errors.New("oidc: claims not set")
}
return json.Unmarshal(u.claims, v)
}
// UserInfo uses the token source to query the provider's user info endpoint.
func (p *Provider) UserInfo(ctx context.Context, tokenSource oauth2.TokenSource) (*UserInfo, error) {
if p.userInfoURL == "" {
return nil, errors.New("oidc: user info endpoint is not supported by this provider")
}
req, err := http.NewRequest("GET", p.userInfoURL, nil)
if err != nil {
return nil, fmt.Errorf("oidc: create GET request: %v", err)
}
token, err := tokenSource.Token()
if err != nil {
return nil, fmt.Errorf("oidc: get access token: %v", err)
}
token.SetAuthHeader(req)
resp, err := doRequest(ctx, req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("%s: %s", resp.Status, body)
}
var userInfo UserInfo
if err := json.Unmarshal(body, &userInfo); err != nil {
return nil, fmt.Errorf("oidc: failed to decode userinfo: %v", err)
}
userInfo.claims = body
return &userInfo, nil
}
// IDToken is an OpenID Connect extension that provides a predictable representation
// of an authorization event.
//
// The ID Token only holds fields OpenID Connect requires. To access additional
// claims returned by the server, use the Claims method.
type IDToken struct {
// The URL of the server which issued this token. OpenID Connect
// requires this value always be identical to the URL used for
// initial discovery.
//
// Note: Because of a known issue with Google Accounts' implementation
// this value may differ when using Google.
//
// See: https://developers.google.com/identity/protocols/OpenIDConnect#obtainuserinfo
Issuer string
// The client ID, or set of client IDs, that this token is issued for. For
// common uses, this is the client that initialized the auth flow.
//
// This package ensures the audience contains an expected value.
Audience []string
// A unique string which identifies the end user.
Subject string
// Expiry of the token. Ths package will not process tokens that have
// expired unless that validation is explicitly turned off.
Expiry time.Time
// When the token was issued by the provider.
IssuedAt time.Time
// Initial nonce provided during the authentication redirect.
//
// This package does NOT provided verification on the value of this field
// and it's the user's responsibility to ensure it contains a valid value.
Nonce string
// at_hash claim, if set in the ID token. Callers can verify an access token
// that corresponds to the ID token using the VerifyAccessToken method.
AccessTokenHash string
// signature algorithm used for ID token, needed to compute a verification hash of an
// access token
sigAlgorithm string
// Raw payload of the id_token.
claims []byte
// Map of distributed claim names to claim sources
distributedClaims map[string]claimSource
}
// Claims unmarshals the raw JSON payload of the ID Token into a provided struct.
//
// idToken, err := idTokenVerifier.Verify(rawIDToken)
// if err != nil {
// // handle error
// }
// var claims struct {
// Email string `json:"email"`
// EmailVerified bool `json:"email_verified"`
// }
// if err := idToken.Claims(&claims); err != nil {
// // handle error
// }
//
func (i *IDToken) Claims(v interface{}) error {
if i.claims == nil {
return errors.New("oidc: claims not set")
}
return json.Unmarshal(i.claims, v)
}
// VerifyAccessToken verifies that the hash of the access token that corresponds to the iD token
// matches the hash in the id token. It returns an error if the hashes don't match.
// It is the caller's responsibility to ensure that the optional access token hash is present for the ID token
// before calling this method. See https://openid.net/specs/openid-connect-core-1_0.html#CodeIDToken
func (i *IDToken) VerifyAccessToken(accessToken string) error {
if i.AccessTokenHash == "" {
return errNoAtHash
}
var h hash.Hash
switch i.sigAlgorithm {
case RS256, ES256, PS256:
h = sha256.New()
case RS384, ES384, PS384:
h = sha512.New384()
case RS512, ES512, PS512:
h = sha512.New()
default:
return fmt.Errorf("oidc: unsupported signing algorithm %q", i.sigAlgorithm)
}
h.Write([]byte(accessToken)) // hash documents that Write will never return an error
sum := h.Sum(nil)[:h.Size()/2]
actual := base64.RawURLEncoding.EncodeToString(sum)
if actual != i.AccessTokenHash {
return errInvalidAtHash
}
return nil
}
type idToken struct {
Issuer string `json:"iss"`
Subject string `json:"sub"`
Audience audience `json:"aud"`
Expiry jsonTime `json:"exp"`
IssuedAt jsonTime `json:"iat"`
NotBefore *jsonTime `json:"nbf"`
Nonce string `json:"nonce"`
AtHash string `json:"at_hash"`
ClaimNames map[string]string `json:"_claim_names"`
ClaimSources map[string]claimSource `json:"_claim_sources"`
}
type claimSource struct {
Endpoint string `json:"endpoint"`
AccessToken string `json:"access_token"`
}
type audience []string
func (a *audience) UnmarshalJSON(b []byte) error {
var s string
if json.Unmarshal(b, &s) == nil {
*a = audience{s}
return nil
}
var auds []string
if err := json.Unmarshal(b, &auds); err != nil {
return err
}
*a = audience(auds)
return nil
}
type jsonTime time.Time
func (j *jsonTime) UnmarshalJSON(b []byte) error {
var n json.Number
if err := json.Unmarshal(b, &n); err != nil {
return err
}
var unix int64
if t, err := n.Int64(); err == nil {
unix = t
} else {
f, err := n.Float64()
if err != nil {
return err
}
unix = int64(f)
}
*j = jsonTime(time.Unix(unix, 0))
return nil
}
func unmarshalResp(r *http.Response, body []byte, v interface{}) error {
err := json.Unmarshal(body, &v)
if err == nil {
return nil
}
ct := r.Header.Get("Content-Type")
mediaType, _, parseErr := mime.ParseMediaType(ct)
if parseErr == nil && mediaType == "application/json" {
return fmt.Errorf("got Content-Type = application/json, but could not unmarshal as JSON: %v", err)
}
return fmt.Errorf("expected Content-Type = application/json, got %q: %v", ct, err)
}

16
vendor/github.com/coreos/go-oidc/test generated vendored Normal file
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#!/bin/bash
set -e
# Filter out any files with a !golint build tag.
LINTABLE=$( go list -tags=golint -f '
{{- range $i, $file := .GoFiles -}}
{{ $file }} {{ end }}
{{ range $i, $file := .TestGoFiles -}}
{{ $file }} {{ end }}' github.com/coreos/go-oidc )
go test -v -i -race github.com/coreos/go-oidc/...
go test -v -race github.com/coreos/go-oidc/...
golint -set_exit_status $LINTABLE
go vet github.com/coreos/go-oidc/...
go build -v ./example/...

336
vendor/github.com/coreos/go-oidc/verify.go generated vendored Normal file
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package oidc
import (
"bytes"
"context"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"strings"
"time"
"golang.org/x/oauth2"
jose "gopkg.in/square/go-jose.v2"
)
const (
issuerGoogleAccounts = "https://accounts.google.com"
issuerGoogleAccountsNoScheme = "accounts.google.com"
)
// KeySet is a set of publc JSON Web Keys that can be used to validate the signature
// of JSON web tokens. This is expected to be backed by a remote key set through
// provider metadata discovery or an in-memory set of keys delivered out-of-band.
type KeySet interface {
// VerifySignature parses the JSON web token, verifies the signature, and returns
// the raw payload. Header and claim fields are validated by other parts of the
// package. For example, the KeySet does not need to check values such as signature
// algorithm, issuer, and audience since the IDTokenVerifier validates these values
// independently.
//
// If VerifySignature makes HTTP requests to verify the token, it's expected to
// use any HTTP client associated with the context through ClientContext.
VerifySignature(ctx context.Context, jwt string) (payload []byte, err error)
}
// IDTokenVerifier provides verification for ID Tokens.
type IDTokenVerifier struct {
keySet KeySet
config *Config
issuer string
}
// NewVerifier returns a verifier manually constructed from a key set and issuer URL.
//
// It's easier to use provider discovery to construct an IDTokenVerifier than creating
// one directly. This method is intended to be used with provider that don't support
// metadata discovery, or avoiding round trips when the key set URL is already known.
//
// This constructor can be used to create a verifier directly using the issuer URL and
// JSON Web Key Set URL without using discovery:
//
// keySet := oidc.NewRemoteKeySet(ctx, "https://www.googleapis.com/oauth2/v3/certs")
// verifier := oidc.NewVerifier("https://accounts.google.com", keySet, config)
//
// Since KeySet is an interface, this constructor can also be used to supply custom
// public key sources. For example, if a user wanted to supply public keys out-of-band
// and hold them statically in-memory:
//
// // Custom KeySet implementation.
// keySet := newStatisKeySet(publicKeys...)
//
// // Verifier uses the custom KeySet implementation.
// verifier := oidc.NewVerifier("https://auth.example.com", keySet, config)
//
func NewVerifier(issuerURL string, keySet KeySet, config *Config) *IDTokenVerifier {
return &IDTokenVerifier{keySet: keySet, config: config, issuer: issuerURL}
}
// Config is the configuration for an IDTokenVerifier.
type Config struct {
// Expected audience of the token. For a majority of the cases this is expected to be
// the ID of the client that initialized the login flow. It may occasionally differ if
// the provider supports the authorizing party (azp) claim.
//
// If not provided, users must explicitly set SkipClientIDCheck.
ClientID string
// If specified, only this set of algorithms may be used to sign the JWT.
//
// If the IDTokenVerifier is created from a provider with (*Provider).Verifier, this
// defaults to the set of algorithms the provider supports. Otherwise this values
// defaults to RS256.
SupportedSigningAlgs []string
// If true, no ClientID check performed. Must be true if ClientID field is empty.
SkipClientIDCheck bool
// If true, token expiry is not checked.
SkipExpiryCheck bool
// SkipIssuerCheck is intended for specialized cases where the the caller wishes to
// defer issuer validation. When enabled, callers MUST independently verify the Token's
// Issuer is a known good value.
//
// Mismatched issuers often indicate client mis-configuration. If mismatches are
// unexpected, evaluate if the provided issuer URL is incorrect instead of enabling
// this option.
SkipIssuerCheck bool
// Time function to check Token expiry. Defaults to time.Now
Now func() time.Time
}
// Verifier returns an IDTokenVerifier that uses the provider's key set to verify JWTs.
//
// The returned IDTokenVerifier is tied to the Provider's context and its behavior is
// undefined once the Provider's context is canceled.
func (p *Provider) Verifier(config *Config) *IDTokenVerifier {
if len(config.SupportedSigningAlgs) == 0 && len(p.algorithms) > 0 {
// Make a copy so we don't modify the config values.
cp := &Config{}
*cp = *config
cp.SupportedSigningAlgs = p.algorithms
config = cp
}
return NewVerifier(p.issuer, p.remoteKeySet, config)
}
func parseJWT(p string) ([]byte, error) {
parts := strings.Split(p, ".")
if len(parts) < 2 {
return nil, fmt.Errorf("oidc: malformed jwt, expected 3 parts got %d", len(parts))
}
payload, err := base64.RawURLEncoding.DecodeString(parts[1])
if err != nil {
return nil, fmt.Errorf("oidc: malformed jwt payload: %v", err)
}
return payload, nil
}
func contains(sli []string, ele string) bool {
for _, s := range sli {
if s == ele {
return true
}
}
return false
}
// Returns the Claims from the distributed JWT token
func resolveDistributedClaim(ctx context.Context, verifier *IDTokenVerifier, src claimSource) ([]byte, error) {
req, err := http.NewRequest("GET", src.Endpoint, nil)
if err != nil {
return nil, fmt.Errorf("malformed request: %v", err)
}
if src.AccessToken != "" {
req.Header.Set("Authorization", "Bearer "+src.AccessToken)
}
resp, err := doRequest(ctx, req)
if err != nil {
return nil, fmt.Errorf("oidc: Request to endpoint failed: %v", err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("unable to read response body: %v", err)
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("oidc: request failed: %v", resp.StatusCode)
}
token, err := verifier.Verify(ctx, string(body))
if err != nil {
return nil, fmt.Errorf("malformed response body: %v", err)
}
return token.claims, nil
}
func parseClaim(raw []byte, name string, v interface{}) error {
var parsed map[string]json.RawMessage
if err := json.Unmarshal(raw, &parsed); err != nil {
return err
}
val, ok := parsed[name]
if !ok {
return fmt.Errorf("claim doesn't exist: %s", name)
}
return json.Unmarshal([]byte(val), v)
}
// Verify parses a raw ID Token, verifies it's been signed by the provider, preforms
// any additional checks depending on the Config, and returns the payload.
//
// Verify does NOT do nonce validation, which is the callers responsibility.
//
// See: https://openid.net/specs/openid-connect-core-1_0.html#IDTokenValidation
//
// oauth2Token, err := oauth2Config.Exchange(ctx, r.URL.Query().Get("code"))
// if err != nil {
// // handle error
// }
//
// // Extract the ID Token from oauth2 token.
// rawIDToken, ok := oauth2Token.Extra("id_token").(string)
// if !ok {
// // handle error
// }
//
// token, err := verifier.Verify(ctx, rawIDToken)
//
func (v *IDTokenVerifier) Verify(ctx context.Context, rawIDToken string) (*IDToken, error) {
jws, err := jose.ParseSigned(rawIDToken)
if err != nil {
return nil, fmt.Errorf("oidc: malformed jwt: %v", err)
}
// Throw out tokens with invalid claims before trying to verify the token. This lets
// us do cheap checks before possibly re-syncing keys.
payload, err := parseJWT(rawIDToken)
if err != nil {
return nil, fmt.Errorf("oidc: malformed jwt: %v", err)
}
var token idToken
if err := json.Unmarshal(payload, &token); err != nil {
return nil, fmt.Errorf("oidc: failed to unmarshal claims: %v", err)
}
distributedClaims := make(map[string]claimSource)
//step through the token to map claim names to claim sources"
for cn, src := range token.ClaimNames {
if src == "" {
return nil, fmt.Errorf("oidc: failed to obtain source from claim name")
}
s, ok := token.ClaimSources[src]
if !ok {
return nil, fmt.Errorf("oidc: source does not exist")
}
distributedClaims[cn] = s
}
t := &IDToken{
Issuer: token.Issuer,
Subject: token.Subject,
Audience: []string(token.Audience),
Expiry: time.Time(token.Expiry),
IssuedAt: time.Time(token.IssuedAt),
Nonce: token.Nonce,
AccessTokenHash: token.AtHash,
claims: payload,
distributedClaims: distributedClaims,
}
// Check issuer.
if !v.config.SkipIssuerCheck && t.Issuer != v.issuer {
// Google sometimes returns "accounts.google.com" as the issuer claim instead of
// the required "https://accounts.google.com". Detect this case and allow it only
// for Google.
//
// We will not add hooks to let other providers go off spec like this.
if !(v.issuer == issuerGoogleAccounts && t.Issuer == issuerGoogleAccountsNoScheme) {
return nil, fmt.Errorf("oidc: id token issued by a different provider, expected %q got %q", v.issuer, t.Issuer)
}
}
// If a client ID has been provided, make sure it's part of the audience. SkipClientIDCheck must be true if ClientID is empty.
//
// This check DOES NOT ensure that the ClientID is the party to which the ID Token was issued (i.e. Authorized party).
if !v.config.SkipClientIDCheck {
if v.config.ClientID != "" {
if !contains(t.Audience, v.config.ClientID) {
return nil, fmt.Errorf("oidc: expected audience %q got %q", v.config.ClientID, t.Audience)
}
} else {
return nil, fmt.Errorf("oidc: invalid configuration, clientID must be provided or SkipClientIDCheck must be set")
}
}
// If a SkipExpiryCheck is false, make sure token is not expired.
if !v.config.SkipExpiryCheck {
now := time.Now
if v.config.Now != nil {
now = v.config.Now
}
nowTime := now()
if t.Expiry.Before(nowTime) {
return nil, fmt.Errorf("oidc: token is expired (Token Expiry: %v)", t.Expiry)
}
// If nbf claim is provided in token, ensure that it is indeed in the past.
if token.NotBefore != nil {
nbfTime := time.Time(*token.NotBefore)
leeway := 1 * time.Minute
if nowTime.Add(leeway).Before(nbfTime) {
return nil, fmt.Errorf("oidc: current time %v before the nbf (not before) time: %v", nowTime, nbfTime)
}
}
}
switch len(jws.Signatures) {
case 0:
return nil, fmt.Errorf("oidc: id token not signed")
case 1:
default:
return nil, fmt.Errorf("oidc: multiple signatures on id token not supported")
}
sig := jws.Signatures[0]
supportedSigAlgs := v.config.SupportedSigningAlgs
if len(supportedSigAlgs) == 0 {
supportedSigAlgs = []string{RS256}
}
if !contains(supportedSigAlgs, sig.Header.Algorithm) {
return nil, fmt.Errorf("oidc: id token signed with unsupported algorithm, expected %q got %q", supportedSigAlgs, sig.Header.Algorithm)
}
t.sigAlgorithm = sig.Header.Algorithm
gotPayload, err := v.keySet.VerifySignature(ctx, rawIDToken)
if err != nil {
return nil, fmt.Errorf("failed to verify signature: %v", err)
}
// Ensure that the payload returned by the square actually matches the payload parsed earlier.
if !bytes.Equal(gotPayload, payload) {
return nil, errors.New("oidc: internal error, payload parsed did not match previous payload")
}
return t, nil
}
// Nonce returns an auth code option which requires the ID Token created by the
// OpenID Connect provider to contain the specified nonce.
func Nonce(nonce string) oauth2.AuthCodeOption {
return oauth2.SetAuthURLParam("nonce", nonce)
}

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language: go
install:
- go get -d -v ./...
- go get -u github.com/stretchr/testify/require
go:
- 1.7
- 1.8
- tip

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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# cachecontrol: HTTP Caching Parser and Interpretation
[![GoDoc](https://godoc.org/github.com/pquerna/cachecontrol?status.svg)](https://godoc.org/github.com/pquerna/cachecontrol)[![Build Status](https://travis-ci.org/pquerna/cachecontrol.svg?branch=master)](https://travis-ci.org/pquerna/cachecontrol)
`cachecontrol` implements [RFC 7234](http://tools.ietf.org/html/rfc7234) __Hypertext Transfer Protocol (HTTP/1.1): Caching__. It does this by parsing the `Cache-Control` and other headers, providing information about requests and responses -- but `cachecontrol` does not implement an actual cache backend, just the control plane to make decisions about if a particular response is cachable.
# Usage
`cachecontrol.CachableResponse` returns an array of [reasons](https://godoc.org/github.com/pquerna/cachecontrol/cacheobject#Reason) why a response should not be cached and when it expires. In the case that `len(reasons) == 0`, the response is cachable according to the RFC. However, some people want non-compliant caches for various business use cases, so each reason is specifically named, so if your cache wants to cache `POST` requests, it can easily do that, but still be RFC compliant in other situations.
# Examples
## Can you cache Example.com?
```go
package main
import (
"github.com/pquerna/cachecontrol"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "http://www.example.com/", nil)
res, _ := http.DefaultClient.Do(req)
_, _ = ioutil.ReadAll(res.Body)
reasons, expires, _ := cachecontrol.CachableResponse(req, res, cachecontrol.Options{})
fmt.Println("Reasons to not cache: ", reasons)
fmt.Println("Expiration: ", expires.String())
}
```
## Can I use this in a high performance caching server?
`cachecontrol` is divided into two packages: `cachecontrol` with a high level API, and a lower level `cacheobject` package. Use [Object](https://godoc.org/github.com/pquerna/cachecontrol/cacheobject#Object) in a high performance use case where you have previously parsed headers containing dates or would like to avoid memory allocations.
```go
package main
import (
"github.com/pquerna/cachecontrol/cacheobject"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "http://www.example.com/", nil)
res, _ := http.DefaultClient.Do(req)
_, _ = ioutil.ReadAll(res.Body)
reqDir, _ := cacheobject.ParseRequestCacheControl(req.Header.Get("Cache-Control"))
resDir, _ := cacheobject.ParseResponseCacheControl(res.Header.Get("Cache-Control"))
expiresHeader, _ := http.ParseTime(res.Header.Get("Expires"))
dateHeader, _ := http.ParseTime(res.Header.Get("Date"))
lastModifiedHeader, _ := http.ParseTime(res.Header.Get("Last-Modified"))
obj := cacheobject.Object{
RespDirectives: resDir,
RespHeaders: res.Header,
RespStatusCode: res.StatusCode,
RespExpiresHeader: expiresHeader,
RespDateHeader: dateHeader,
RespLastModifiedHeader: lastModifiedHeader,
ReqDirectives: reqDir,
ReqHeaders: req.Header,
ReqMethod: req.Method,
NowUTC: time.Now().UTC(),
}
rv := cacheobject.ObjectResults{}
cacheobject.CachableObject(&obj, &rv)
cacheobject.ExpirationObject(&obj, &rv)
fmt.Println("Errors: ", rv.OutErr)
fmt.Println("Reasons to not cache: ", rv.OutReasons)
fmt.Println("Warning headers to add: ", rv.OutWarnings)
fmt.Println("Expiration: ", rv.OutExpirationTime.String())
}
```
## Improvements, bugs, adding features, and taking cachecontrol new directions!
Please [open issues in Github](https://github.com/pquerna/cachecontrol/issues) for ideas, bugs, and general thoughts. Pull requests are of course preferred :)
# Credits
`cachecontrol` has recieved significant contributions from:
* [Paul Querna](https://github.com/pquerna)
## License
`cachecontrol` is licensed under the [Apache License, Version 2.0](./LICENSE)

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package cachecontrol
import (
"github.com/pquerna/cachecontrol/cacheobject"
"net/http"
"time"
)
type Options struct {
// Set to True for a prviate cache, which is not shared amoung users (eg, in a browser)
// Set to False for a "shared" cache, which is more common in a server context.
PrivateCache bool
}
// Given an HTTP Request, the future Status Code, and an ResponseWriter,
// determine the possible reasons a response SHOULD NOT be cached.
func CachableResponseWriter(req *http.Request,
statusCode int,
resp http.ResponseWriter,
opts Options) ([]cacheobject.Reason, time.Time, error) {
return cacheobject.UsingRequestResponse(req, statusCode, resp.Header(), opts.PrivateCache)
}
// Given an HTTP Request and Response, determine the possible reasons a response SHOULD NOT
// be cached.
func CachableResponse(req *http.Request,
resp *http.Response,
opts Options) ([]cacheobject.Reason, time.Time, error) {
return cacheobject.UsingRequestResponse(req, resp.StatusCode, resp.Header, opts.PrivateCache)
}

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package cacheobject
import (
"errors"
"math"
"net/http"
"net/textproto"
"strconv"
"strings"
)
// TODO(pquerna): add extensions from here: http://www.iana.org/assignments/http-cache-directives/http-cache-directives.xhtml
var (
ErrQuoteMismatch = errors.New("Missing closing quote")
ErrMaxAgeDeltaSeconds = errors.New("Failed to parse delta-seconds in `max-age`")
ErrSMaxAgeDeltaSeconds = errors.New("Failed to parse delta-seconds in `s-maxage`")
ErrMaxStaleDeltaSeconds = errors.New("Failed to parse delta-seconds in `min-fresh`")
ErrMinFreshDeltaSeconds = errors.New("Failed to parse delta-seconds in `min-fresh`")
ErrNoCacheNoArgs = errors.New("Unexpected argument to `no-cache`")
ErrNoStoreNoArgs = errors.New("Unexpected argument to `no-store`")
ErrNoTransformNoArgs = errors.New("Unexpected argument to `no-transform`")
ErrOnlyIfCachedNoArgs = errors.New("Unexpected argument to `only-if-cached`")
ErrMustRevalidateNoArgs = errors.New("Unexpected argument to `must-revalidate`")
ErrPublicNoArgs = errors.New("Unexpected argument to `public`")
ErrProxyRevalidateNoArgs = errors.New("Unexpected argument to `proxy-revalidate`")
// Experimental
ErrImmutableNoArgs = errors.New("Unexpected argument to `immutable`")
ErrStaleIfErrorDeltaSeconds = errors.New("Failed to parse delta-seconds in `stale-if-error`")
ErrStaleWhileRevalidateDeltaSeconds = errors.New("Failed to parse delta-seconds in `stale-while-revalidate`")
)
func whitespace(b byte) bool {
if b == '\t' || b == ' ' {
return true
}
return false
}
func parse(value string, cd cacheDirective) error {
var err error = nil
i := 0
for i < len(value) && err == nil {
// eat leading whitespace or commas
if whitespace(value[i]) || value[i] == ',' {
i++
continue
}
j := i + 1
for j < len(value) {
if !isToken(value[j]) {
break
}
j++
}
token := strings.ToLower(value[i:j])
tokenHasFields := hasFieldNames(token)
/*
println("GOT TOKEN:")
println(" i -> ", i)
println(" j -> ", j)
println(" token -> ", token)
*/
if j+1 < len(value) && value[j] == '=' {
k := j + 1
// minimum size two bytes of "", but we let httpUnquote handle it.
if k < len(value) && value[k] == '"' {
eaten, result := httpUnquote(value[k:])
if eaten == -1 {
return ErrQuoteMismatch
}
i = k + eaten
err = cd.addPair(token, result)
} else {
z := k
for z < len(value) {
if tokenHasFields {
if whitespace(value[z]) {
break
}
} else {
if whitespace(value[z]) || value[z] == ',' {
break
}
}
z++
}
i = z
result := value[k:z]
if result != "" && result[len(result)-1] == ',' {
result = result[:len(result)-1]
}
err = cd.addPair(token, result)
}
} else {
if token != "," {
err = cd.addToken(token)
}
i = j
}
}
return err
}
// DeltaSeconds specifies a non-negative integer, representing
// time in seconds: http://tools.ietf.org/html/rfc7234#section-1.2.1
//
// When set to -1, this means unset.
//
type DeltaSeconds int32
// Parser for delta-seconds, a uint31, more or less:
// http://tools.ietf.org/html/rfc7234#section-1.2.1
func parseDeltaSeconds(v string) (DeltaSeconds, error) {
n, err := strconv.ParseUint(v, 10, 32)
if err != nil {
if numError, ok := err.(*strconv.NumError); ok {
if numError.Err == strconv.ErrRange {
return DeltaSeconds(math.MaxInt32), nil
}
}
return DeltaSeconds(-1), err
} else {
if n > math.MaxInt32 {
return DeltaSeconds(math.MaxInt32), nil
} else {
return DeltaSeconds(n), nil
}
}
}
// Fields present in a header.
type FieldNames map[string]bool
// internal interface for shared methods of RequestCacheDirectives and ResponseCacheDirectives
type cacheDirective interface {
addToken(s string) error
addPair(s string, v string) error
}
// LOW LEVEL API: Repersentation of possible request directives in a `Cache-Control` header: http://tools.ietf.org/html/rfc7234#section-5.2.1
//
// Note: Many fields will be `nil` in practice.
//
type RequestCacheDirectives struct {
// max-age(delta seconds): http://tools.ietf.org/html/rfc7234#section-5.2.1.1
//
// The "max-age" request directive indicates that the client is
// unwilling to accept a response whose age is greater than the
// specified number of seconds. Unless the max-stale request directive
// is also present, the client is not willing to accept a stale
// response.
MaxAge DeltaSeconds
// max-stale(delta seconds): http://tools.ietf.org/html/rfc7234#section-5.2.1.2
//
// The "max-stale" request directive indicates that the client is
// willing to accept a response that has exceeded its freshness
// lifetime. If max-stale is assigned a value, then the client is
// willing to accept a response that has exceeded its freshness lifetime
// by no more than the specified number of seconds. If no value is
// assigned to max-stale, then the client is willing to accept a stale
// response of any age.
MaxStale DeltaSeconds
// min-fresh(delta seconds): http://tools.ietf.org/html/rfc7234#section-5.2.1.3
//
// The "min-fresh" request directive indicates that the client is
// willing to accept a response whose freshness lifetime is no less than
// its current age plus the specified time in seconds. That is, the
// client wants a response that will still be fresh for at least the
// specified number of seconds.
MinFresh DeltaSeconds
// no-cache(bool): http://tools.ietf.org/html/rfc7234#section-5.2.1.4
//
// The "no-cache" request directive indicates that a cache MUST NOT use
// a stored response to satisfy the request without successful
// validation on the origin server.
NoCache bool
// no-store(bool): http://tools.ietf.org/html/rfc7234#section-5.2.1.5
//
// The "no-store" request directive indicates that a cache MUST NOT
// store any part of either this request or any response to it. This
// directive applies to both private and shared caches.
NoStore bool
// no-transform(bool): http://tools.ietf.org/html/rfc7234#section-5.2.1.6
//
// The "no-transform" request directive indicates that an intermediary
// (whether or not it implements a cache) MUST NOT transform the
// payload, as defined in Section 5.7.2 of RFC7230.
NoTransform bool
// only-if-cached(bool): http://tools.ietf.org/html/rfc7234#section-5.2.1.7
//
// The "only-if-cached" request directive indicates that the client only
// wishes to obtain a stored response.
OnlyIfCached bool
// Extensions: http://tools.ietf.org/html/rfc7234#section-5.2.3
//
// The Cache-Control header field can be extended through the use of one
// or more cache-extension tokens, each with an optional value. A cache
// MUST ignore unrecognized cache directives.
Extensions []string
}
func (cd *RequestCacheDirectives) addToken(token string) error {
var err error = nil
switch token {
case "max-age":
err = ErrMaxAgeDeltaSeconds
case "max-stale":
err = ErrMaxStaleDeltaSeconds
case "min-fresh":
err = ErrMinFreshDeltaSeconds
case "no-cache":
cd.NoCache = true
case "no-store":
cd.NoStore = true
case "no-transform":
cd.NoTransform = true
case "only-if-cached":
cd.OnlyIfCached = true
default:
cd.Extensions = append(cd.Extensions, token)
}
return err
}
func (cd *RequestCacheDirectives) addPair(token string, v string) error {
var err error = nil
switch token {
case "max-age":
cd.MaxAge, err = parseDeltaSeconds(v)
if err != nil {
err = ErrMaxAgeDeltaSeconds
}
case "max-stale":
cd.MaxStale, err = parseDeltaSeconds(v)
if err != nil {
err = ErrMaxStaleDeltaSeconds
}
case "min-fresh":
cd.MinFresh, err = parseDeltaSeconds(v)
if err != nil {
err = ErrMinFreshDeltaSeconds
}
case "no-cache":
err = ErrNoCacheNoArgs
case "no-store":
err = ErrNoStoreNoArgs
case "no-transform":
err = ErrNoTransformNoArgs
case "only-if-cached":
err = ErrOnlyIfCachedNoArgs
default:
// TODO(pquerna): this sucks, making user re-parse
cd.Extensions = append(cd.Extensions, token+"="+v)
}
return err
}
// LOW LEVEL API: Parses a Cache Control Header from a Request into a set of directives.
func ParseRequestCacheControl(value string) (*RequestCacheDirectives, error) {
cd := &RequestCacheDirectives{
MaxAge: -1,
MaxStale: -1,
MinFresh: -1,
}
err := parse(value, cd)
if err != nil {
return nil, err
}
return cd, nil
}
// LOW LEVEL API: Repersentation of possible response directives in a `Cache-Control` header: http://tools.ietf.org/html/rfc7234#section-5.2.2
//
// Note: Many fields will be `nil` in practice.
//
type ResponseCacheDirectives struct {
// must-revalidate(bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.1
//
// The "must-revalidate" response directive indicates that once it has
// become stale, a cache MUST NOT use the response to satisfy subsequent
// requests without successful validation on the origin server.
MustRevalidate bool
// no-cache(FieldName): http://tools.ietf.org/html/rfc7234#section-5.2.2.2
//
// The "no-cache" response directive indicates that the response MUST
// NOT be used to satisfy a subsequent request without successful
// validation on the origin server.
//
// If the no-cache response directive specifies one or more field-names,
// then a cache MAY use the response to satisfy a subsequent request,
// subject to any other restrictions on caching. However, any header
// fields in the response that have the field-name(s) listed MUST NOT be
// sent in the response to a subsequent request without successful
// revalidation with the origin server.
NoCache FieldNames
// no-cache(cast-to-bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.2
//
// While the RFC defines optional field-names on a no-cache directive,
// many applications only want to know if any no-cache directives were
// present at all.
NoCachePresent bool
// no-store(bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.3
//
// The "no-store" request directive indicates that a cache MUST NOT
// store any part of either this request or any response to it. This
// directive applies to both private and shared caches.
NoStore bool
// no-transform(bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.4
//
// The "no-transform" response directive indicates that an intermediary
// (regardless of whether it implements a cache) MUST NOT transform the
// payload, as defined in Section 5.7.2 of RFC7230.
NoTransform bool
// public(bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.5
//
// The "public" response directive indicates that any cache MAY store
// the response, even if the response would normally be non-cacheable or
// cacheable only within a private cache.
Public bool
// private(FieldName): http://tools.ietf.org/html/rfc7234#section-5.2.2.6
//
// The "private" response directive indicates that the response message
// is intended for a single user and MUST NOT be stored by a shared
// cache. A private cache MAY store the response and reuse it for later
// requests, even if the response would normally be non-cacheable.
//
// If the private response directive specifies one or more field-names,
// this requirement is limited to the field-values associated with the
// listed response header fields. That is, a shared cache MUST NOT
// store the specified field-names(s), whereas it MAY store the
// remainder of the response message.
Private FieldNames
// private(cast-to-bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.6
//
// While the RFC defines optional field-names on a private directive,
// many applications only want to know if any private directives were
// present at all.
PrivatePresent bool
// proxy-revalidate(bool): http://tools.ietf.org/html/rfc7234#section-5.2.2.7
//
// The "proxy-revalidate" response directive has the same meaning as the
// must-revalidate response directive, except that it does not apply to
// private caches.
ProxyRevalidate bool
// max-age(delta seconds): http://tools.ietf.org/html/rfc7234#section-5.2.2.8
//
// The "max-age" response directive indicates that the response is to be
// considered stale after its age is greater than the specified number
// of seconds.
MaxAge DeltaSeconds
// s-maxage(delta seconds): http://tools.ietf.org/html/rfc7234#section-5.2.2.9
//
// The "s-maxage" response directive indicates that, in shared caches,
// the maximum age specified by this directive overrides the maximum age
// specified by either the max-age directive or the Expires header
// field. The s-maxage directive also implies the semantics of the
// proxy-revalidate response directive.
SMaxAge DeltaSeconds
////
// Experimental features
// - https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#Extension_Cache-Control_directives
// - https://www.fastly.com/blog/stale-while-revalidate-stale-if-error-available-today
////
// immutable(cast-to-bool): experimental feature
Immutable bool
// stale-if-error(delta seconds): experimental feature
StaleIfError DeltaSeconds
// stale-while-revalidate(delta seconds): experimental feature
StaleWhileRevalidate DeltaSeconds
// Extensions: http://tools.ietf.org/html/rfc7234#section-5.2.3
//
// The Cache-Control header field can be extended through the use of one
// or more cache-extension tokens, each with an optional value. A cache
// MUST ignore unrecognized cache directives.
Extensions []string
}
// LOW LEVEL API: Parses a Cache Control Header from a Response into a set of directives.
func ParseResponseCacheControl(value string) (*ResponseCacheDirectives, error) {
cd := &ResponseCacheDirectives{
MaxAge: -1,
SMaxAge: -1,
// Exerimantal stale timeouts
StaleIfError: -1,
StaleWhileRevalidate: -1,
}
err := parse(value, cd)
if err != nil {
return nil, err
}
return cd, nil
}
func (cd *ResponseCacheDirectives) addToken(token string) error {
var err error = nil
switch token {
case "must-revalidate":
cd.MustRevalidate = true
case "no-cache":
cd.NoCachePresent = true
case "no-store":
cd.NoStore = true
case "no-transform":
cd.NoTransform = true
case "public":
cd.Public = true
case "private":
cd.PrivatePresent = true
case "proxy-revalidate":
cd.ProxyRevalidate = true
case "max-age":
err = ErrMaxAgeDeltaSeconds
case "s-maxage":
err = ErrSMaxAgeDeltaSeconds
// Experimental
case "immutable":
cd.Immutable = true
case "stale-if-error":
err = ErrMaxAgeDeltaSeconds
case "stale-while-revalidate":
err = ErrMaxAgeDeltaSeconds
default:
cd.Extensions = append(cd.Extensions, token)
}
return err
}
func hasFieldNames(token string) bool {
switch token {
case "no-cache":
return true
case "private":
return true
}
return false
}
func (cd *ResponseCacheDirectives) addPair(token string, v string) error {
var err error = nil
switch token {
case "must-revalidate":
err = ErrMustRevalidateNoArgs
case "no-cache":
cd.NoCachePresent = true
tokens := strings.Split(v, ",")
if cd.NoCache == nil {
cd.NoCache = make(FieldNames)
}
for _, t := range tokens {
k := http.CanonicalHeaderKey(textproto.TrimString(t))
cd.NoCache[k] = true
}
case "no-store":
err = ErrNoStoreNoArgs
case "no-transform":
err = ErrNoTransformNoArgs
case "public":
err = ErrPublicNoArgs
case "private":
cd.PrivatePresent = true
tokens := strings.Split(v, ",")
if cd.Private == nil {
cd.Private = make(FieldNames)
}
for _, t := range tokens {
k := http.CanonicalHeaderKey(textproto.TrimString(t))
cd.Private[k] = true
}
case "proxy-revalidate":
err = ErrProxyRevalidateNoArgs
case "max-age":
cd.MaxAge, err = parseDeltaSeconds(v)
case "s-maxage":
cd.SMaxAge, err = parseDeltaSeconds(v)
// Experimental
case "immutable":
err = ErrImmutableNoArgs
case "stale-if-error":
cd.StaleIfError, err = parseDeltaSeconds(v)
case "stale-while-revalidate":
cd.StaleWhileRevalidate, err = parseDeltaSeconds(v)
default:
// TODO(pquerna): this sucks, making user re-parse, and its technically not 'quoted' like the original,
// but this is still easier, just a SplitN on "="
cd.Extensions = append(cd.Extensions, token+"="+v)
}
return err
}

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cacheobject
// This file deals with lexical matters of HTTP
func isSeparator(c byte) bool {
switch c {
case '(', ')', '<', '>', '@', ',', ';', ':', '\\', '"', '/', '[', ']', '?', '=', '{', '}', ' ', '\t':
return true
}
return false
}
func isCtl(c byte) bool { return (0 <= c && c <= 31) || c == 127 }
func isChar(c byte) bool { return 0 <= c && c <= 127 }
func isAnyText(c byte) bool { return !isCtl(c) }
func isQdText(c byte) bool { return isAnyText(c) && c != '"' }
func isToken(c byte) bool { return isChar(c) && !isCtl(c) && !isSeparator(c) }
// Valid escaped sequences are not specified in RFC 2616, so for now, we assume
// that they coincide with the common sense ones used by GO. Malformed
// characters should probably not be treated as errors by a robust (forgiving)
// parser, so we replace them with the '?' character.
func httpUnquotePair(b byte) byte {
// skip the first byte, which should always be '\'
switch b {
case 'a':
return '\a'
case 'b':
return '\b'
case 'f':
return '\f'
case 'n':
return '\n'
case 'r':
return '\r'
case 't':
return '\t'
case 'v':
return '\v'
case '\\':
return '\\'
case '\'':
return '\''
case '"':
return '"'
}
return '?'
}
// raw must begin with a valid quoted string. Only the first quoted string is
// parsed and is unquoted in result. eaten is the number of bytes parsed, or -1
// upon failure.
func httpUnquote(raw string) (eaten int, result string) {
buf := make([]byte, len(raw))
if raw[0] != '"' {
return -1, ""
}
eaten = 1
j := 0 // # of bytes written in buf
for i := 1; i < len(raw); i++ {
switch b := raw[i]; b {
case '"':
eaten++
buf = buf[0:j]
return i + 1, string(buf)
case '\\':
if len(raw) < i+2 {
return -1, ""
}
buf[j] = httpUnquotePair(raw[i+1])
eaten += 2
j++
i++
default:
if isQdText(b) {
buf[j] = b
} else {
buf[j] = '?'
}
eaten++
j++
}
}
return -1, ""
}

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package cacheobject
import (
"net/http"
"time"
)
// LOW LEVEL API: Repersents a potentially cachable HTTP object.
//
// This struct is designed to be serialized efficiently, so in a high
// performance caching server, things like Date-Strings don't need to be
// parsed for every use of a cached object.
type Object struct {
CacheIsPrivate bool
RespDirectives *ResponseCacheDirectives
RespHeaders http.Header
RespStatusCode int
RespExpiresHeader time.Time
RespDateHeader time.Time
RespLastModifiedHeader time.Time
ReqDirectives *RequestCacheDirectives
ReqHeaders http.Header
ReqMethod string
NowUTC time.Time
}
// LOW LEVEL API: Repersents the results of examinig an Object with
// CachableObject and ExpirationObject.
//
// TODO(pquerna): decide if this is a good idea or bad
type ObjectResults struct {
OutReasons []Reason
OutWarnings []Warning
OutExpirationTime time.Time
OutErr error
}
// LOW LEVEL API: Check if a object is cachable.
func CachableObject(obj *Object, rv *ObjectResults) {
rv.OutReasons = nil
rv.OutWarnings = nil
rv.OutErr = nil
switch obj.ReqMethod {
case "GET":
break
case "HEAD":
break
case "POST":
/**
POST: http://tools.ietf.org/html/rfc7231#section-4.3.3
Responses to POST requests are only cacheable when they include
explicit freshness information (see Section 4.2.1 of [RFC7234]).
However, POST caching is not widely implemented. For cases where an
origin server wishes the client to be able to cache the result of a
POST in a way that can be reused by a later GET, the origin server
MAY send a 200 (OK) response containing the result and a
Content-Location header field that has the same value as the POST's
effective request URI (Section 3.1.4.2).
*/
if !hasFreshness(obj.ReqDirectives, obj.RespDirectives, obj.RespHeaders, obj.RespExpiresHeader, obj.CacheIsPrivate) {
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodPOST)
}
case "PUT":
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodPUT)
case "DELETE":
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodDELETE)
case "CONNECT":
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodCONNECT)
case "OPTIONS":
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodOPTIONS)
case "TRACE":
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodTRACE)
// HTTP Extension Methods: http://www.iana.org/assignments/http-methods/http-methods.xhtml
//
// To my knowledge, none of them are cachable. Please open a ticket if this is not the case!
//
default:
rv.OutReasons = append(rv.OutReasons, ReasonRequestMethodUnkown)
}
if obj.ReqDirectives.NoStore {
rv.OutReasons = append(rv.OutReasons, ReasonRequestNoStore)
}
// Storing Responses to Authenticated Requests: http://tools.ietf.org/html/rfc7234#section-3.2
authz := obj.ReqHeaders.Get("Authorization")
if authz != "" {
if obj.RespDirectives.MustRevalidate ||
obj.RespDirectives.Public ||
obj.RespDirectives.SMaxAge != -1 {
// Expires of some kind present, this is potentially OK.
} else {
rv.OutReasons = append(rv.OutReasons, ReasonRequestAuthorizationHeader)
}
}
if obj.RespDirectives.PrivatePresent && !obj.CacheIsPrivate {
rv.OutReasons = append(rv.OutReasons, ReasonResponsePrivate)
}
if obj.RespDirectives.NoStore {
rv.OutReasons = append(rv.OutReasons, ReasonResponseNoStore)
}
/*
the response either:
* contains an Expires header field (see Section 5.3), or
* contains a max-age response directive (see Section 5.2.2.8), or
* contains a s-maxage response directive (see Section 5.2.2.9)
and the cache is shared, or
* contains a Cache Control Extension (see Section 5.2.3) that
allows it to be cached, or
* has a status code that is defined as cacheable by default (see
Section 4.2.2), or
* contains a public response directive (see Section 5.2.2.5).
*/
expires := obj.RespHeaders.Get("Expires") != ""
statusCachable := cachableStatusCode(obj.RespStatusCode)
if expires ||
obj.RespDirectives.MaxAge != -1 ||
(obj.RespDirectives.SMaxAge != -1 && !obj.CacheIsPrivate) ||
statusCachable ||
obj.RespDirectives.Public {
/* cachable by default, at least one of the above conditions was true */
} else {
rv.OutReasons = append(rv.OutReasons, ReasonResponseUncachableByDefault)
}
}
var twentyFourHours = time.Duration(24 * time.Hour)
const debug = false
// LOW LEVEL API: Update an objects expiration time.
func ExpirationObject(obj *Object, rv *ObjectResults) {
/**
* Okay, lets calculate Freshness/Expiration now. woo:
* http://tools.ietf.org/html/rfc7234#section-4.2
*/
/*
o If the cache is shared and the s-maxage response directive
(Section 5.2.2.9) is present, use its value, or
o If the max-age response directive (Section 5.2.2.8) is present,
use its value, or
o If the Expires response header field (Section 5.3) is present, use
its value minus the value of the Date response header field, or
o Otherwise, no explicit expiration time is present in the response.
A heuristic freshness lifetime might be applicable; see
Section 4.2.2.
*/
var expiresTime time.Time
if obj.RespDirectives.SMaxAge != -1 && !obj.CacheIsPrivate {
expiresTime = obj.NowUTC.Add(time.Second * time.Duration(obj.RespDirectives.SMaxAge))
} else if obj.RespDirectives.MaxAge != -1 {
expiresTime = obj.NowUTC.UTC().Add(time.Second * time.Duration(obj.RespDirectives.MaxAge))
} else if !obj.RespExpiresHeader.IsZero() {
serverDate := obj.RespDateHeader
if serverDate.IsZero() {
// common enough case when a Date: header has not yet been added to an
// active response.
serverDate = obj.NowUTC
}
expiresTime = obj.NowUTC.Add(obj.RespExpiresHeader.Sub(serverDate))
} else if !obj.RespLastModifiedHeader.IsZero() {
// heuristic freshness lifetime
rv.OutWarnings = append(rv.OutWarnings, WarningHeuristicExpiration)
// http://httpd.apache.org/docs/2.4/mod/mod_cache.html#cachelastmodifiedfactor
// CacheMaxExpire defaults to 24 hours
// CacheLastModifiedFactor: is 0.1
//
// expiry-period = MIN(time-since-last-modified-date * factor, 24 hours)
//
// obj.NowUTC
since := obj.RespLastModifiedHeader.Sub(obj.NowUTC)
since = time.Duration(float64(since) * -0.1)
if since > twentyFourHours {
expiresTime = obj.NowUTC.Add(twentyFourHours)
} else {
expiresTime = obj.NowUTC.Add(since)
}
if debug {
println("Now UTC: ", obj.NowUTC.String())
println("Last-Modified: ", obj.RespLastModifiedHeader.String())
println("Since: ", since.String())
println("TwentyFourHours: ", twentyFourHours.String())
println("Expiration: ", expiresTime.String())
}
} else {
// TODO(pquerna): what should the default behavoir be for expiration time?
}
rv.OutExpirationTime = expiresTime
}
// Evaluate cachability based on an HTTP request, and parts of the response.
func UsingRequestResponse(req *http.Request,
statusCode int,
respHeaders http.Header,
privateCache bool) ([]Reason, time.Time, error) {
reasons, time, _, _, err := UsingRequestResponseWithObject(req, statusCode, respHeaders, privateCache)
return reasons, time, err
}
// Evaluate cachability based on an HTTP request, and parts of the response.
// Returns the parsed Object as well.
func UsingRequestResponseWithObject(req *http.Request,
statusCode int,
respHeaders http.Header,
privateCache bool) ([]Reason, time.Time, []Warning, *Object, error) {
var reqHeaders http.Header
var reqMethod string
var reqDir *RequestCacheDirectives = nil
respDir, err := ParseResponseCacheControl(respHeaders.Get("Cache-Control"))
if err != nil {
return nil, time.Time{}, nil, nil, err
}
if req != nil {
reqDir, err = ParseRequestCacheControl(req.Header.Get("Cache-Control"))
if err != nil {
return nil, time.Time{}, nil, nil, err
}
reqHeaders = req.Header
reqMethod = req.Method
}
var expiresHeader time.Time
var dateHeader time.Time
var lastModifiedHeader time.Time
if respHeaders.Get("Expires") != "" {
expiresHeader, err = http.ParseTime(respHeaders.Get("Expires"))
if err != nil {
// sometimes servers will return `Expires: 0` or `Expires: -1` to
// indicate expired content
expiresHeader = time.Time{}
}
expiresHeader = expiresHeader.UTC()
}
if respHeaders.Get("Date") != "" {
dateHeader, err = http.ParseTime(respHeaders.Get("Date"))
if err != nil {
return nil, time.Time{}, nil, nil, err
}
dateHeader = dateHeader.UTC()
}
if respHeaders.Get("Last-Modified") != "" {
lastModifiedHeader, err = http.ParseTime(respHeaders.Get("Last-Modified"))
if err != nil {
return nil, time.Time{}, nil, nil, err
}
lastModifiedHeader = lastModifiedHeader.UTC()
}
obj := Object{
CacheIsPrivate: privateCache,
RespDirectives: respDir,
RespHeaders: respHeaders,
RespStatusCode: statusCode,
RespExpiresHeader: expiresHeader,
RespDateHeader: dateHeader,
RespLastModifiedHeader: lastModifiedHeader,
ReqDirectives: reqDir,
ReqHeaders: reqHeaders,
ReqMethod: reqMethod,
NowUTC: time.Now().UTC(),
}
rv := ObjectResults{}
CachableObject(&obj, &rv)
if rv.OutErr != nil {
return nil, time.Time{}, nil, nil, rv.OutErr
}
ExpirationObject(&obj, &rv)
if rv.OutErr != nil {
return nil, time.Time{}, nil, nil, rv.OutErr
}
return rv.OutReasons, rv.OutExpirationTime, rv.OutWarnings, &obj, nil
}
// calculate if a freshness directive is present: http://tools.ietf.org/html/rfc7234#section-4.2.1
func hasFreshness(reqDir *RequestCacheDirectives, respDir *ResponseCacheDirectives, respHeaders http.Header, respExpires time.Time, privateCache bool) bool {
if !privateCache && respDir.SMaxAge != -1 {
return true
}
if respDir.MaxAge != -1 {
return true
}
if !respExpires.IsZero() || respHeaders.Get("Expires") != "" {
return true
}
return false
}
func cachableStatusCode(statusCode int) bool {
/*
Responses with status codes that are defined as cacheable by default
(e.g., 200, 203, 204, 206, 300, 301, 404, 405, 410, 414, and 501 in
this specification) can be reused by a cache with heuristic
expiration unless otherwise indicated by the method definition or
explicit cache controls [RFC7234]; all other status codes are not
cacheable by default.
*/
switch statusCode {
case 200:
return true
case 203:
return true
case 204:
return true
case 206:
return true
case 300:
return true
case 301:
return true
case 404:
return true
case 405:
return true
case 410:
return true
case 414:
return true
case 501:
return true
default:
return false
}
}

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package cacheobject
// Repersents a potential Reason to not cache an object.
//
// Applications may wish to ignore specific reasons, which will make them non-RFC
// compliant, but this type gives them specific cases they can choose to ignore,
// making them compliant in as many cases as they can.
type Reason int
const (
// The request method was POST and an Expiration header was not supplied.
ReasonRequestMethodPOST Reason = iota
// The request method was PUT and PUTs are not cachable.
ReasonRequestMethodPUT
// The request method was DELETE and DELETEs are not cachable.
ReasonRequestMethodDELETE
// The request method was CONNECT and CONNECTs are not cachable.
ReasonRequestMethodCONNECT
// The request method was OPTIONS and OPTIONS are not cachable.
ReasonRequestMethodOPTIONS
// The request method was TRACE and TRACEs are not cachable.
ReasonRequestMethodTRACE
// The request method was not recognized by cachecontrol, and should not be cached.
ReasonRequestMethodUnkown
// The request included an Cache-Control: no-store header
ReasonRequestNoStore
// The request included an Authorization header without an explicit Public or Expiration time: http://tools.ietf.org/html/rfc7234#section-3.2
ReasonRequestAuthorizationHeader
// The response included an Cache-Control: no-store header
ReasonResponseNoStore
// The response included an Cache-Control: private header and this is not a Private cache
ReasonResponsePrivate
// The response failed to meet at least one of the conditions specified in RFC 7234 section 3: http://tools.ietf.org/html/rfc7234#section-3
ReasonResponseUncachableByDefault
)
func (r Reason) String() string {
switch r {
case ReasonRequestMethodPOST:
return "ReasonRequestMethodPOST"
case ReasonRequestMethodPUT:
return "ReasonRequestMethodPUT"
case ReasonRequestMethodDELETE:
return "ReasonRequestMethodDELETE"
case ReasonRequestMethodCONNECT:
return "ReasonRequestMethodCONNECT"
case ReasonRequestMethodOPTIONS:
return "ReasonRequestMethodOPTIONS"
case ReasonRequestMethodTRACE:
return "ReasonRequestMethodTRACE"
case ReasonRequestMethodUnkown:
return "ReasonRequestMethodUnkown"
case ReasonRequestNoStore:
return "ReasonRequestNoStore"
case ReasonRequestAuthorizationHeader:
return "ReasonRequestAuthorizationHeader"
case ReasonResponseNoStore:
return "ReasonResponseNoStore"
case ReasonResponsePrivate:
return "ReasonResponsePrivate"
case ReasonResponseUncachableByDefault:
return "ReasonResponseUncachableByDefault"
}
panic(r)
}

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package cacheobject
import (
"fmt"
"net/http"
"time"
)
// Repersents an HTTP Warning: http://tools.ietf.org/html/rfc7234#section-5.5
type Warning int
const (
// Response is Stale
// A cache SHOULD generate this whenever the sent response is stale.
WarningResponseIsStale Warning = 110
// Revalidation Failed
// A cache SHOULD generate this when sending a stale
// response because an attempt to validate the response failed, due to an
// inability to reach the server.
WarningRevalidationFailed Warning = 111
// Disconnected Operation
// A cache SHOULD generate this if it is intentionally disconnected from
// the rest of the network for a period of time.
WarningDisconnectedOperation Warning = 112
// Heuristic Expiration
//
// A cache SHOULD generate this if it heuristically chose a freshness
// lifetime greater than 24 hours and the response's age is greater than
// 24 hours.
WarningHeuristicExpiration Warning = 113
// Miscellaneous Warning
//
// The warning text can include arbitrary information to be presented to
// a human user or logged. A system receiving this warning MUST NOT
// take any automated action, besides presenting the warning to the
// user.
WarningMiscellaneousWarning Warning = 199
// Transformation Applied
//
// This Warning code MUST be added by a proxy if it applies any
// transformation to the representation, such as changing the
// content-coding, media-type, or modifying the representation data,
// unless this Warning code already appears in the response.
WarningTransformationApplied Warning = 214
// Miscellaneous Persistent Warning
//
// The warning text can include arbitrary information to be presented to
// a human user or logged. A system receiving this warning MUST NOT
// take any automated action.
WarningMiscellaneousPersistentWarning Warning = 299
)
func (w Warning) HeaderString(agent string, date time.Time) string {
if agent == "" {
agent = "-"
} else {
// TODO(pquerna): this doesn't escape agent if it contains bad things.
agent = `"` + agent + `"`
}
return fmt.Sprintf(`%d %s "%s" %s`, w, agent, w.String(), date.Format(http.TimeFormat))
}
func (w Warning) String() string {
switch w {
case WarningResponseIsStale:
return "Response is Stale"
case WarningRevalidationFailed:
return "Revalidation Failed"
case WarningDisconnectedOperation:
return "Disconnected Operation"
case WarningHeuristicExpiration:
return "Heuristic Expiration"
case WarningMiscellaneousWarning:
// TODO(pquerna): ideally had a better way to override this one code.
return "Miscellaneous Warning"
case WarningTransformationApplied:
return "Transformation Applied"
case WarningMiscellaneousPersistentWarning:
// TODO(pquerna): same as WarningMiscellaneousWarning
return "Miscellaneous Persistent Warning"
}
panic(w)
}

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/**
* Copyright 2015 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package cachecontrol implements the logic for HTTP Caching
//
// Deciding if an HTTP Response can be cached is often harder
// and more bug prone than an actual cache storage backend.
// cachecontrol provides a simple interface to determine if
// request and response pairs are cachable as defined under
// RFC 7234 http://tools.ietf.org/html/rfc7234
package cachecontrol

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vendor/golang.org/x/crypto/ed25519/ed25519.go generated vendored Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// In Go 1.13, the ed25519 package was promoted to the standard library as
// crypto/ed25519, and this package became a wrapper for the standard library one.
//
// +build !go1.13
// Package ed25519 implements the Ed25519 signature algorithm. See
// https://ed25519.cr.yp.to/.
//
// These functions are also compatible with the “Ed25519” function defined in
// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
// representation includes a public key suffix to make multiple signing
// operations with the same key more efficient. This package refers to the RFC
// 8032 private key as the “seed”.
package ed25519
// This code is a port of the public domain, “ref10” implementation of ed25519
// from SUPERCOP.
import (
"bytes"
"crypto"
cryptorand "crypto/rand"
"crypto/sha512"
"errors"
"io"
"strconv"
"golang.org/x/crypto/ed25519/internal/edwards25519"
)
const (
// PublicKeySize is the size, in bytes, of public keys as used in this package.
PublicKeySize = 32
// PrivateKeySize is the size, in bytes, of private keys as used in this package.
PrivateKeySize = 64
// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
SignatureSize = 64
// SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
SeedSize = 32
)
// PublicKey is the type of Ed25519 public keys.
type PublicKey []byte
// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
type PrivateKey []byte
// Public returns the PublicKey corresponding to priv.
func (priv PrivateKey) Public() crypto.PublicKey {
publicKey := make([]byte, PublicKeySize)
copy(publicKey, priv[32:])
return PublicKey(publicKey)
}
// Seed returns the private key seed corresponding to priv. It is provided for
// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds
// in this package.
func (priv PrivateKey) Seed() []byte {
seed := make([]byte, SeedSize)
copy(seed, priv[:32])
return seed
}
// Sign signs the given message with priv.
// Ed25519 performs two passes over messages to be signed and therefore cannot
// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
// indicate the message hasn't been hashed. This can be achieved by passing
// crypto.Hash(0) as the value for opts.
func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
if opts.HashFunc() != crypto.Hash(0) {
return nil, errors.New("ed25519: cannot sign hashed message")
}
return Sign(priv, message), nil
}
// GenerateKey generates a public/private key pair using entropy from rand.
// If rand is nil, crypto/rand.Reader will be used.
func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
if rand == nil {
rand = cryptorand.Reader
}
seed := make([]byte, SeedSize)
if _, err := io.ReadFull(rand, seed); err != nil {
return nil, nil, err
}
privateKey := NewKeyFromSeed(seed)
publicKey := make([]byte, PublicKeySize)
copy(publicKey, privateKey[32:])
return publicKey, privateKey, nil
}
// NewKeyFromSeed calculates a private key from a seed. It will panic if
// len(seed) is not SeedSize. This function is provided for interoperability
// with RFC 8032. RFC 8032's private keys correspond to seeds in this
// package.
func NewKeyFromSeed(seed []byte) PrivateKey {
if l := len(seed); l != SeedSize {
panic("ed25519: bad seed length: " + strconv.Itoa(l))
}
digest := sha512.Sum512(seed)
digest[0] &= 248
digest[31] &= 127
digest[31] |= 64
var A edwards25519.ExtendedGroupElement
var hBytes [32]byte
copy(hBytes[:], digest[:])
edwards25519.GeScalarMultBase(&A, &hBytes)
var publicKeyBytes [32]byte
A.ToBytes(&publicKeyBytes)
privateKey := make([]byte, PrivateKeySize)
copy(privateKey, seed)
copy(privateKey[32:], publicKeyBytes[:])
return privateKey
}
// Sign signs the message with privateKey and returns a signature. It will
// panic if len(privateKey) is not PrivateKeySize.
func Sign(privateKey PrivateKey, message []byte) []byte {
if l := len(privateKey); l != PrivateKeySize {
panic("ed25519: bad private key length: " + strconv.Itoa(l))
}
h := sha512.New()
h.Write(privateKey[:32])
var digest1, messageDigest, hramDigest [64]byte
var expandedSecretKey [32]byte
h.Sum(digest1[:0])
copy(expandedSecretKey[:], digest1[:])
expandedSecretKey[0] &= 248
expandedSecretKey[31] &= 63
expandedSecretKey[31] |= 64
h.Reset()
h.Write(digest1[32:])
h.Write(message)
h.Sum(messageDigest[:0])
var messageDigestReduced [32]byte
edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
var R edwards25519.ExtendedGroupElement
edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
var encodedR [32]byte
R.ToBytes(&encodedR)
h.Reset()
h.Write(encodedR[:])
h.Write(privateKey[32:])
h.Write(message)
h.Sum(hramDigest[:0])
var hramDigestReduced [32]byte
edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
var s [32]byte
edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
signature := make([]byte, SignatureSize)
copy(signature[:], encodedR[:])
copy(signature[32:], s[:])
return signature
}
// Verify reports whether sig is a valid signature of message by publicKey. It
// will panic if len(publicKey) is not PublicKeySize.
func Verify(publicKey PublicKey, message, sig []byte) bool {
if l := len(publicKey); l != PublicKeySize {
panic("ed25519: bad public key length: " + strconv.Itoa(l))
}
if len(sig) != SignatureSize || sig[63]&224 != 0 {
return false
}
var A edwards25519.ExtendedGroupElement
var publicKeyBytes [32]byte
copy(publicKeyBytes[:], publicKey)
if !A.FromBytes(&publicKeyBytes) {
return false
}
edwards25519.FeNeg(&A.X, &A.X)
edwards25519.FeNeg(&A.T, &A.T)
h := sha512.New()
h.Write(sig[:32])
h.Write(publicKey[:])
h.Write(message)
var digest [64]byte
h.Sum(digest[:0])
var hReduced [32]byte
edwards25519.ScReduce(&hReduced, &digest)
var R edwards25519.ProjectiveGroupElement
var s [32]byte
copy(s[:], sig[32:])
// https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in
// the range [0, order) in order to prevent signature malleability.
if !edwards25519.ScMinimal(&s) {
return false
}
edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &s)
var checkR [32]byte
R.ToBytes(&checkR)
return bytes.Equal(sig[:32], checkR[:])
}

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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.13
// Package ed25519 implements the Ed25519 signature algorithm. See
// https://ed25519.cr.yp.to/.
//
// These functions are also compatible with the “Ed25519” function defined in
// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
// representation includes a public key suffix to make multiple signing
// operations with the same key more efficient. This package refers to the RFC
// 8032 private key as the “seed”.
//
// Beginning with Go 1.13, the functionality of this package was moved to the
// standard library as crypto/ed25519. This package only acts as a compatibility
// wrapper.
package ed25519
import (
"crypto/ed25519"
"io"
)
const (
// PublicKeySize is the size, in bytes, of public keys as used in this package.
PublicKeySize = 32
// PrivateKeySize is the size, in bytes, of private keys as used in this package.
PrivateKeySize = 64
// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
SignatureSize = 64
// SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
SeedSize = 32
)
// PublicKey is the type of Ed25519 public keys.
//
// This type is an alias for crypto/ed25519's PublicKey type.
// See the crypto/ed25519 package for the methods on this type.
type PublicKey = ed25519.PublicKey
// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
//
// This type is an alias for crypto/ed25519's PrivateKey type.
// See the crypto/ed25519 package for the methods on this type.
type PrivateKey = ed25519.PrivateKey
// GenerateKey generates a public/private key pair using entropy from rand.
// If rand is nil, crypto/rand.Reader will be used.
func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
return ed25519.GenerateKey(rand)
}
// NewKeyFromSeed calculates a private key from a seed. It will panic if
// len(seed) is not SeedSize. This function is provided for interoperability
// with RFC 8032. RFC 8032's private keys correspond to seeds in this
// package.
func NewKeyFromSeed(seed []byte) PrivateKey {
return ed25519.NewKeyFromSeed(seed)
}
// Sign signs the message with privateKey and returns a signature. It will
// panic if len(privateKey) is not PrivateKeySize.
func Sign(privateKey PrivateKey, message []byte) []byte {
return ed25519.Sign(privateKey, message)
}
// Verify reports whether sig is a valid signature of message by publicKey. It
// will panic if len(publicKey) is not PublicKeySize.
func Verify(publicKey PublicKey, message, sig []byte) bool {
return ed25519.Verify(publicKey, message, sig)
}

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vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go generated vendored Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC
2898 / PKCS #5 v2.0.
A key derivation function is useful when encrypting data based on a password
or any other not-fully-random data. It uses a pseudorandom function to derive
a secure encryption key based on the password.
While v2.0 of the standard defines only one pseudorandom function to use,
HMAC-SHA1, the drafted v2.1 specification allows use of all five FIPS Approved
Hash Functions SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 for HMAC. To
choose, you can pass the `New` functions from the different SHA packages to
pbkdf2.Key.
*/
package pbkdf2 // import "golang.org/x/crypto/pbkdf2"
import (
"crypto/hmac"
"hash"
)
// Key derives a key from the password, salt and iteration count, returning a
// []byte of length keylen that can be used as cryptographic key. The key is
// derived based on the method described as PBKDF2 with the HMAC variant using
// the supplied hash function.
//
// For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you
// can get a derived key for e.g. AES-256 (which needs a 32-byte key) by
// doing:
//
// dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New)
//
// Remember to get a good random salt. At least 8 bytes is recommended by the
// RFC.
//
// Using a higher iteration count will increase the cost of an exhaustive
// search but will also make derivation proportionally slower.
func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
prf := hmac.New(h, password)
hashLen := prf.Size()
numBlocks := (keyLen + hashLen - 1) / hashLen
var buf [4]byte
dk := make([]byte, 0, numBlocks*hashLen)
U := make([]byte, hashLen)
for block := 1; block <= numBlocks; block++ {
// N.B.: || means concatenation, ^ means XOR
// for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
// U_1 = PRF(password, salt || uint(i))
prf.Reset()
prf.Write(salt)
buf[0] = byte(block >> 24)
buf[1] = byte(block >> 16)
buf[2] = byte(block >> 8)
buf[3] = byte(block)
prf.Write(buf[:4])
dk = prf.Sum(dk)
T := dk[len(dk)-hashLen:]
copy(U, T)
// U_n = PRF(password, U_(n-1))
for n := 2; n <= iter; n++ {
prf.Reset()
prf.Write(U)
U = U[:0]
U = prf.Sum(U)
for x := range U {
T[x] ^= U[x]
}
}
}
return dk[:keyLen]
}

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vendor/gopkg.in/square/go-jose.v2/.gitcookies.sh.enc generated vendored Normal file
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'|Ę&{tÄU|gGę(ěŹCy=+¨śňcű:u:/pś#~žü["±4¤!­nŮAŞDK<Šuf˙hĹażÂ:şü¸ˇ´B/ŁŘ¤ą¤ň_<C588>hÎŰSăT*wĚxĽŻťą-ç|ťŕŔÓ<C594>ŃÄäóĚ㣗A$$â6ŁÁâG)8nĎpűĆˡ3ĚšśoďĎvŽB–3ż­]xÝ“Ó2l§G•|qRŢŻ ö2 5R–Ó×Ç$´ń˝YčˇŢÝ™l‘Ë«yAI"ŰŚ<C5B0>®íĂ»ąĽkÄ|Kĺţ[9ĆâŇĺ=°ú˙źń|@S•3 ó#ćťx?ľV„,ľ‚SĆÝőśwPíogŇ6&V6 ©D.dBŠ 7

7
vendor/gopkg.in/square/go-jose.v2/.gitignore generated vendored Normal file
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*~
.*.swp
*.out
*.test
*.pem
*.cov
jose-util/jose-util

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language: go
sudo: false
matrix:
fast_finish: true
allow_failures:
- go: tip
go:
- '1.11.x'
- '1.12.x'
- tip
go_import_path: gopkg.in/square/go-jose.v2
before_script:
- export PATH=$HOME/.local/bin:$PATH
before_install:
# Install encrypted gitcookies to get around bandwidth-limits
# that is causing Travis-CI builds to fail. For more info, see
# https://github.com/golang/go/issues/12933
- openssl aes-256-cbc -K $encrypted_1528c3c2cafd_key -iv $encrypted_1528c3c2cafd_iv -in .gitcookies.sh.enc -out .gitcookies.sh -d || true
- bash .gitcookies.sh || true
- go get github.com/wadey/gocovmerge
- go get github.com/mattn/goveralls
- go get github.com/stretchr/testify/assert
- go get golang.org/x/tools/cmd/cover || true
- go get code.google.com/p/go.tools/cmd/cover || true
- pip install cram --user
script:
- go test . -v -covermode=count -coverprofile=profile.cov
- go test ./cipher -v -covermode=count -coverprofile=cipher/profile.cov
- go test ./jwt -v -covermode=count -coverprofile=jwt/profile.cov
- go test ./json -v # no coverage for forked encoding/json package
- cd jose-util && go build && PATH=$PWD:$PATH cram -v jose-util.t
- cd ..
after_success:
- gocovmerge *.cov */*.cov > merged.coverprofile
- $HOME/gopath/bin/goveralls -coverprofile merged.coverprofile -service=travis-ci

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vendor/gopkg.in/square/go-jose.v2/BUG-BOUNTY.md generated vendored Normal file
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Serious about security
======================
Square recognizes the important contributions the security research community
can make. We therefore encourage reporting security issues with the code
contained in this repository.
If you believe you have discovered a security vulnerability, please follow the
guidelines at <https://bugcrowd.com/squareopensource>.

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# Contributing
If you would like to contribute code to go-jose you can do so through GitHub by
forking the repository and sending a pull request.
When submitting code, please make every effort to follow existing conventions
and style in order to keep the code as readable as possible. Please also make
sure all tests pass by running `go test`, and format your code with `go fmt`.
We also recommend using `golint` and `errcheck`.
Before your code can be accepted into the project you must also sign the
[Individual Contributor License Agreement][1].
[1]: https://spreadsheets.google.com/spreadsheet/viewform?formkey=dDViT2xzUHAwRkI3X3k5Z0lQM091OGc6MQ&ndplr=1

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Apache License
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http://www.apache.org/licenses/
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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# Go JOSE
[![godoc](http://img.shields.io/badge/godoc-version_1-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v1)
[![godoc](http://img.shields.io/badge/godoc-version_2-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v2)
[![license](http://img.shields.io/badge/license-apache_2.0-blue.svg?style=flat)](https://raw.githubusercontent.com/square/go-jose/master/LICENSE)
[![build](https://travis-ci.org/square/go-jose.svg?branch=v2)](https://travis-ci.org/square/go-jose)
[![coverage](https://coveralls.io/repos/github/square/go-jose/badge.svg?branch=v2)](https://coveralls.io/r/square/go-jose)
Package jose aims to provide an implementation of the Javascript Object Signing
and Encryption set of standards. This includes support for JSON Web Encryption,
JSON Web Signature, and JSON Web Token standards.
**Disclaimer**: This library contains encryption software that is subject to
the U.S. Export Administration Regulations. You may not export, re-export,
transfer or download this code or any part of it in violation of any United
States law, directive or regulation. In particular this software may not be
exported or re-exported in any form or on any media to Iran, North Sudan,
Syria, Cuba, or North Korea, or to denied persons or entities mentioned on any
US maintained blocked list.
## Overview
The implementation follows the
[JSON Web Encryption](http://dx.doi.org/10.17487/RFC7516) (RFC 7516),
[JSON Web Signature](http://dx.doi.org/10.17487/RFC7515) (RFC 7515), and
[JSON Web Token](http://dx.doi.org/10.17487/RFC7519) (RFC 7519).
Tables of supported algorithms are shown below. The library supports both
the compact and full serialization formats, and has optional support for
multiple recipients. It also comes with a small command-line utility
([`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util))
for dealing with JOSE messages in a shell.
**Note**: We use a forked version of the `encoding/json` package from the Go
standard library which uses case-sensitive matching for member names (instead
of [case-insensitive matching](https://www.ietf.org/mail-archive/web/json/current/msg03763.html)).
This is to avoid differences in interpretation of messages between go-jose and
libraries in other languages.
### Versions
We use [gopkg.in](https://gopkg.in) for versioning.
[Version 2](https://gopkg.in/square/go-jose.v2)
([branch](https://github.com/square/go-jose/tree/v2),
[doc](https://godoc.org/gopkg.in/square/go-jose.v2)) is the current version:
import "gopkg.in/square/go-jose.v2"
The old `v1` branch ([go-jose.v1](https://gopkg.in/square/go-jose.v1)) will
still receive backported bug fixes and security fixes, but otherwise
development is frozen. All new feature development takes place on the `v2`
branch. Version 2 also contains additional sub-packages such as the
[jwt](https://godoc.org/gopkg.in/square/go-jose.v2/jwt) implementation
contributed by [@shaxbee](https://github.com/shaxbee).
### Supported algorithms
See below for a table of supported algorithms. Algorithm identifiers match
the names in the [JSON Web Algorithms](http://dx.doi.org/10.17487/RFC7518)
standard where possible. The Godoc reference has a list of constants.
Key encryption | Algorithm identifier(s)
:------------------------- | :------------------------------
RSA-PKCS#1v1.5 | RSA1_5
RSA-OAEP | RSA-OAEP, RSA-OAEP-256
AES key wrap | A128KW, A192KW, A256KW
AES-GCM key wrap | A128GCMKW, A192GCMKW, A256GCMKW
ECDH-ES + AES key wrap | ECDH-ES+A128KW, ECDH-ES+A192KW, ECDH-ES+A256KW
ECDH-ES (direct) | ECDH-ES<sup>1</sup>
Direct encryption | dir<sup>1</sup>
<sup>1. Not supported in multi-recipient mode</sup>
Signing / MAC | Algorithm identifier(s)
:------------------------- | :------------------------------
RSASSA-PKCS#1v1.5 | RS256, RS384, RS512
RSASSA-PSS | PS256, PS384, PS512
HMAC | HS256, HS384, HS512
ECDSA | ES256, ES384, ES512
Ed25519 | EdDSA<sup>2</sup>
<sup>2. Only available in version 2 of the package</sup>
Content encryption | Algorithm identifier(s)
:------------------------- | :------------------------------
AES-CBC+HMAC | A128CBC-HS256, A192CBC-HS384, A256CBC-HS512
AES-GCM | A128GCM, A192GCM, A256GCM
Compression | Algorithm identifiers(s)
:------------------------- | -------------------------------
DEFLATE (RFC 1951) | DEF
### Supported key types
See below for a table of supported key types. These are understood by the
library, and can be passed to corresponding functions such as `NewEncrypter` or
`NewSigner`. Each of these keys can also be wrapped in a JWK if desired, which
allows attaching a key id.
Algorithm(s) | Corresponding types
:------------------------- | -------------------------------
RSA | *[rsa.PublicKey](http://golang.org/pkg/crypto/rsa/#PublicKey), *[rsa.PrivateKey](http://golang.org/pkg/crypto/rsa/#PrivateKey)
ECDH, ECDSA | *[ecdsa.PublicKey](http://golang.org/pkg/crypto/ecdsa/#PublicKey), *[ecdsa.PrivateKey](http://golang.org/pkg/crypto/ecdsa/#PrivateKey)
EdDSA<sup>1</sup> | [ed25519.PublicKey](https://godoc.org/golang.org/x/crypto/ed25519#PublicKey), [ed25519.PrivateKey](https://godoc.org/golang.org/x/crypto/ed25519#PrivateKey)
AES, HMAC | []byte
<sup>1. Only available in version 2 of the package</sup>
## Examples
[![godoc](http://img.shields.io/badge/godoc-version_1-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v1)
[![godoc](http://img.shields.io/badge/godoc-version_2-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v2)
Examples can be found in the Godoc
reference for this package. The
[`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util)
subdirectory also contains a small command-line utility which might be useful
as an example.

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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"crypto"
"crypto/aes"
"crypto/ecdsa"
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/sha256"
"errors"
"fmt"
"math/big"
"golang.org/x/crypto/ed25519"
josecipher "gopkg.in/square/go-jose.v2/cipher"
"gopkg.in/square/go-jose.v2/json"
)
// A generic RSA-based encrypter/verifier
type rsaEncrypterVerifier struct {
publicKey *rsa.PublicKey
}
// A generic RSA-based decrypter/signer
type rsaDecrypterSigner struct {
privateKey *rsa.PrivateKey
}
// A generic EC-based encrypter/verifier
type ecEncrypterVerifier struct {
publicKey *ecdsa.PublicKey
}
type edEncrypterVerifier struct {
publicKey ed25519.PublicKey
}
// A key generator for ECDH-ES
type ecKeyGenerator struct {
size int
algID string
publicKey *ecdsa.PublicKey
}
// A generic EC-based decrypter/signer
type ecDecrypterSigner struct {
privateKey *ecdsa.PrivateKey
}
type edDecrypterSigner struct {
privateKey ed25519.PrivateKey
}
// newRSARecipient creates recipientKeyInfo based on the given key.
func newRSARecipient(keyAlg KeyAlgorithm, publicKey *rsa.PublicKey) (recipientKeyInfo, error) {
// Verify that key management algorithm is supported by this encrypter
switch keyAlg {
case RSA1_5, RSA_OAEP, RSA_OAEP_256:
default:
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
}
if publicKey == nil {
return recipientKeyInfo{}, errors.New("invalid public key")
}
return recipientKeyInfo{
keyAlg: keyAlg,
keyEncrypter: &rsaEncrypterVerifier{
publicKey: publicKey,
},
}, nil
}
// newRSASigner creates a recipientSigInfo based on the given key.
func newRSASigner(sigAlg SignatureAlgorithm, privateKey *rsa.PrivateKey) (recipientSigInfo, error) {
// Verify that key management algorithm is supported by this encrypter
switch sigAlg {
case RS256, RS384, RS512, PS256, PS384, PS512:
default:
return recipientSigInfo{}, ErrUnsupportedAlgorithm
}
if privateKey == nil {
return recipientSigInfo{}, errors.New("invalid private key")
}
return recipientSigInfo{
sigAlg: sigAlg,
publicKey: staticPublicKey(&JSONWebKey{
Key: privateKey.Public(),
}),
signer: &rsaDecrypterSigner{
privateKey: privateKey,
},
}, nil
}
func newEd25519Signer(sigAlg SignatureAlgorithm, privateKey ed25519.PrivateKey) (recipientSigInfo, error) {
if sigAlg != EdDSA {
return recipientSigInfo{}, ErrUnsupportedAlgorithm
}
if privateKey == nil {
return recipientSigInfo{}, errors.New("invalid private key")
}
return recipientSigInfo{
sigAlg: sigAlg,
publicKey: staticPublicKey(&JSONWebKey{
Key: privateKey.Public(),
}),
signer: &edDecrypterSigner{
privateKey: privateKey,
},
}, nil
}
// newECDHRecipient creates recipientKeyInfo based on the given key.
func newECDHRecipient(keyAlg KeyAlgorithm, publicKey *ecdsa.PublicKey) (recipientKeyInfo, error) {
// Verify that key management algorithm is supported by this encrypter
switch keyAlg {
case ECDH_ES, ECDH_ES_A128KW, ECDH_ES_A192KW, ECDH_ES_A256KW:
default:
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
}
if publicKey == nil || !publicKey.Curve.IsOnCurve(publicKey.X, publicKey.Y) {
return recipientKeyInfo{}, errors.New("invalid public key")
}
return recipientKeyInfo{
keyAlg: keyAlg,
keyEncrypter: &ecEncrypterVerifier{
publicKey: publicKey,
},
}, nil
}
// newECDSASigner creates a recipientSigInfo based on the given key.
func newECDSASigner(sigAlg SignatureAlgorithm, privateKey *ecdsa.PrivateKey) (recipientSigInfo, error) {
// Verify that key management algorithm is supported by this encrypter
switch sigAlg {
case ES256, ES384, ES512:
default:
return recipientSigInfo{}, ErrUnsupportedAlgorithm
}
if privateKey == nil {
return recipientSigInfo{}, errors.New("invalid private key")
}
return recipientSigInfo{
sigAlg: sigAlg,
publicKey: staticPublicKey(&JSONWebKey{
Key: privateKey.Public(),
}),
signer: &ecDecrypterSigner{
privateKey: privateKey,
},
}, nil
}
// Encrypt the given payload and update the object.
func (ctx rsaEncrypterVerifier) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
encryptedKey, err := ctx.encrypt(cek, alg)
if err != nil {
return recipientInfo{}, err
}
return recipientInfo{
encryptedKey: encryptedKey,
header: &rawHeader{},
}, nil
}
// Encrypt the given payload. Based on the key encryption algorithm,
// this will either use RSA-PKCS1v1.5 or RSA-OAEP (with SHA-1 or SHA-256).
func (ctx rsaEncrypterVerifier) encrypt(cek []byte, alg KeyAlgorithm) ([]byte, error) {
switch alg {
case RSA1_5:
return rsa.EncryptPKCS1v15(RandReader, ctx.publicKey, cek)
case RSA_OAEP:
return rsa.EncryptOAEP(sha1.New(), RandReader, ctx.publicKey, cek, []byte{})
case RSA_OAEP_256:
return rsa.EncryptOAEP(sha256.New(), RandReader, ctx.publicKey, cek, []byte{})
}
return nil, ErrUnsupportedAlgorithm
}
// Decrypt the given payload and return the content encryption key.
func (ctx rsaDecrypterSigner) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
return ctx.decrypt(recipient.encryptedKey, headers.getAlgorithm(), generator)
}
// Decrypt the given payload. Based on the key encryption algorithm,
// this will either use RSA-PKCS1v1.5 or RSA-OAEP (with SHA-1 or SHA-256).
func (ctx rsaDecrypterSigner) decrypt(jek []byte, alg KeyAlgorithm, generator keyGenerator) ([]byte, error) {
// Note: The random reader on decrypt operations is only used for blinding,
// so stubbing is meanlingless (hence the direct use of rand.Reader).
switch alg {
case RSA1_5:
defer func() {
// DecryptPKCS1v15SessionKey sometimes panics on an invalid payload
// because of an index out of bounds error, which we want to ignore.
// This has been fixed in Go 1.3.1 (released 2014/08/13), the recover()
// only exists for preventing crashes with unpatched versions.
// See: https://groups.google.com/forum/#!topic/golang-dev/7ihX6Y6kx9k
// See: https://code.google.com/p/go/source/detail?r=58ee390ff31602edb66af41ed10901ec95904d33
_ = recover()
}()
// Perform some input validation.
keyBytes := ctx.privateKey.PublicKey.N.BitLen() / 8
if keyBytes != len(jek) {
// Input size is incorrect, the encrypted payload should always match
// the size of the public modulus (e.g. using a 2048 bit key will
// produce 256 bytes of output). Reject this since it's invalid input.
return nil, ErrCryptoFailure
}
cek, _, err := generator.genKey()
if err != nil {
return nil, ErrCryptoFailure
}
// When decrypting an RSA-PKCS1v1.5 payload, we must take precautions to
// prevent chosen-ciphertext attacks as described in RFC 3218, "Preventing
// the Million Message Attack on Cryptographic Message Syntax". We are
// therefore deliberately ignoring errors here.
_ = rsa.DecryptPKCS1v15SessionKey(rand.Reader, ctx.privateKey, jek, cek)
return cek, nil
case RSA_OAEP:
// Use rand.Reader for RSA blinding
return rsa.DecryptOAEP(sha1.New(), rand.Reader, ctx.privateKey, jek, []byte{})
case RSA_OAEP_256:
// Use rand.Reader for RSA blinding
return rsa.DecryptOAEP(sha256.New(), rand.Reader, ctx.privateKey, jek, []byte{})
}
return nil, ErrUnsupportedAlgorithm
}
// Sign the given payload
func (ctx rsaDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
var hash crypto.Hash
switch alg {
case RS256, PS256:
hash = crypto.SHA256
case RS384, PS384:
hash = crypto.SHA384
case RS512, PS512:
hash = crypto.SHA512
default:
return Signature{}, ErrUnsupportedAlgorithm
}
hasher := hash.New()
// According to documentation, Write() on hash never fails
_, _ = hasher.Write(payload)
hashed := hasher.Sum(nil)
var out []byte
var err error
switch alg {
case RS256, RS384, RS512:
out, err = rsa.SignPKCS1v15(RandReader, ctx.privateKey, hash, hashed)
case PS256, PS384, PS512:
out, err = rsa.SignPSS(RandReader, ctx.privateKey, hash, hashed, &rsa.PSSOptions{
SaltLength: rsa.PSSSaltLengthEqualsHash,
})
}
if err != nil {
return Signature{}, err
}
return Signature{
Signature: out,
protected: &rawHeader{},
}, nil
}
// Verify the given payload
func (ctx rsaEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
var hash crypto.Hash
switch alg {
case RS256, PS256:
hash = crypto.SHA256
case RS384, PS384:
hash = crypto.SHA384
case RS512, PS512:
hash = crypto.SHA512
default:
return ErrUnsupportedAlgorithm
}
hasher := hash.New()
// According to documentation, Write() on hash never fails
_, _ = hasher.Write(payload)
hashed := hasher.Sum(nil)
switch alg {
case RS256, RS384, RS512:
return rsa.VerifyPKCS1v15(ctx.publicKey, hash, hashed, signature)
case PS256, PS384, PS512:
return rsa.VerifyPSS(ctx.publicKey, hash, hashed, signature, nil)
}
return ErrUnsupportedAlgorithm
}
// Encrypt the given payload and update the object.
func (ctx ecEncrypterVerifier) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
switch alg {
case ECDH_ES:
// ECDH-ES mode doesn't wrap a key, the shared secret is used directly as the key.
return recipientInfo{
header: &rawHeader{},
}, nil
case ECDH_ES_A128KW, ECDH_ES_A192KW, ECDH_ES_A256KW:
default:
return recipientInfo{}, ErrUnsupportedAlgorithm
}
generator := ecKeyGenerator{
algID: string(alg),
publicKey: ctx.publicKey,
}
switch alg {
case ECDH_ES_A128KW:
generator.size = 16
case ECDH_ES_A192KW:
generator.size = 24
case ECDH_ES_A256KW:
generator.size = 32
}
kek, header, err := generator.genKey()
if err != nil {
return recipientInfo{}, err
}
block, err := aes.NewCipher(kek)
if err != nil {
return recipientInfo{}, err
}
jek, err := josecipher.KeyWrap(block, cek)
if err != nil {
return recipientInfo{}, err
}
return recipientInfo{
encryptedKey: jek,
header: &header,
}, nil
}
// Get key size for EC key generator
func (ctx ecKeyGenerator) keySize() int {
return ctx.size
}
// Get a content encryption key for ECDH-ES
func (ctx ecKeyGenerator) genKey() ([]byte, rawHeader, error) {
priv, err := ecdsa.GenerateKey(ctx.publicKey.Curve, RandReader)
if err != nil {
return nil, rawHeader{}, err
}
out := josecipher.DeriveECDHES(ctx.algID, []byte{}, []byte{}, priv, ctx.publicKey, ctx.size)
b, err := json.Marshal(&JSONWebKey{
Key: &priv.PublicKey,
})
if err != nil {
return nil, nil, err
}
headers := rawHeader{
headerEPK: makeRawMessage(b),
}
return out, headers, nil
}
// Decrypt the given payload and return the content encryption key.
func (ctx ecDecrypterSigner) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
epk, err := headers.getEPK()
if err != nil {
return nil, errors.New("square/go-jose: invalid epk header")
}
if epk == nil {
return nil, errors.New("square/go-jose: missing epk header")
}
publicKey, ok := epk.Key.(*ecdsa.PublicKey)
if publicKey == nil || !ok {
return nil, errors.New("square/go-jose: invalid epk header")
}
if !ctx.privateKey.Curve.IsOnCurve(publicKey.X, publicKey.Y) {
return nil, errors.New("square/go-jose: invalid public key in epk header")
}
apuData, err := headers.getAPU()
if err != nil {
return nil, errors.New("square/go-jose: invalid apu header")
}
apvData, err := headers.getAPV()
if err != nil {
return nil, errors.New("square/go-jose: invalid apv header")
}
deriveKey := func(algID string, size int) []byte {
return josecipher.DeriveECDHES(algID, apuData.bytes(), apvData.bytes(), ctx.privateKey, publicKey, size)
}
var keySize int
algorithm := headers.getAlgorithm()
switch algorithm {
case ECDH_ES:
// ECDH-ES uses direct key agreement, no key unwrapping necessary.
return deriveKey(string(headers.getEncryption()), generator.keySize()), nil
case ECDH_ES_A128KW:
keySize = 16
case ECDH_ES_A192KW:
keySize = 24
case ECDH_ES_A256KW:
keySize = 32
default:
return nil, ErrUnsupportedAlgorithm
}
key := deriveKey(string(algorithm), keySize)
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
return josecipher.KeyUnwrap(block, recipient.encryptedKey)
}
func (ctx edDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
if alg != EdDSA {
return Signature{}, ErrUnsupportedAlgorithm
}
sig, err := ctx.privateKey.Sign(RandReader, payload, crypto.Hash(0))
if err != nil {
return Signature{}, err
}
return Signature{
Signature: sig,
protected: &rawHeader{},
}, nil
}
func (ctx edEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
if alg != EdDSA {
return ErrUnsupportedAlgorithm
}
ok := ed25519.Verify(ctx.publicKey, payload, signature)
if !ok {
return errors.New("square/go-jose: ed25519 signature failed to verify")
}
return nil
}
// Sign the given payload
func (ctx ecDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
var expectedBitSize int
var hash crypto.Hash
switch alg {
case ES256:
expectedBitSize = 256
hash = crypto.SHA256
case ES384:
expectedBitSize = 384
hash = crypto.SHA384
case ES512:
expectedBitSize = 521
hash = crypto.SHA512
}
curveBits := ctx.privateKey.Curve.Params().BitSize
if expectedBitSize != curveBits {
return Signature{}, fmt.Errorf("square/go-jose: expected %d bit key, got %d bits instead", expectedBitSize, curveBits)
}
hasher := hash.New()
// According to documentation, Write() on hash never fails
_, _ = hasher.Write(payload)
hashed := hasher.Sum(nil)
r, s, err := ecdsa.Sign(RandReader, ctx.privateKey, hashed)
if err != nil {
return Signature{}, err
}
keyBytes := curveBits / 8
if curveBits%8 > 0 {
keyBytes++
}
// We serialize the outputs (r and s) into big-endian byte arrays and pad
// them with zeros on the left to make sure the sizes work out. Both arrays
// must be keyBytes long, and the output must be 2*keyBytes long.
rBytes := r.Bytes()
rBytesPadded := make([]byte, keyBytes)
copy(rBytesPadded[keyBytes-len(rBytes):], rBytes)
sBytes := s.Bytes()
sBytesPadded := make([]byte, keyBytes)
copy(sBytesPadded[keyBytes-len(sBytes):], sBytes)
out := append(rBytesPadded, sBytesPadded...)
return Signature{
Signature: out,
protected: &rawHeader{},
}, nil
}
// Verify the given payload
func (ctx ecEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
var keySize int
var hash crypto.Hash
switch alg {
case ES256:
keySize = 32
hash = crypto.SHA256
case ES384:
keySize = 48
hash = crypto.SHA384
case ES512:
keySize = 66
hash = crypto.SHA512
default:
return ErrUnsupportedAlgorithm
}
if len(signature) != 2*keySize {
return fmt.Errorf("square/go-jose: invalid signature size, have %d bytes, wanted %d", len(signature), 2*keySize)
}
hasher := hash.New()
// According to documentation, Write() on hash never fails
_, _ = hasher.Write(payload)
hashed := hasher.Sum(nil)
r := big.NewInt(0).SetBytes(signature[:keySize])
s := big.NewInt(0).SetBytes(signature[keySize:])
match := ecdsa.Verify(ctx.publicKey, hashed, r, s)
if !match {
return errors.New("square/go-jose: ecdsa signature failed to verify")
}
return nil
}

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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package josecipher
import (
"bytes"
"crypto/cipher"
"crypto/hmac"
"crypto/sha256"
"crypto/sha512"
"crypto/subtle"
"encoding/binary"
"errors"
"hash"
)
const (
nonceBytes = 16
)
// NewCBCHMAC instantiates a new AEAD based on CBC+HMAC.
func NewCBCHMAC(key []byte, newBlockCipher func([]byte) (cipher.Block, error)) (cipher.AEAD, error) {
keySize := len(key) / 2
integrityKey := key[:keySize]
encryptionKey := key[keySize:]
blockCipher, err := newBlockCipher(encryptionKey)
if err != nil {
return nil, err
}
var hash func() hash.Hash
switch keySize {
case 16:
hash = sha256.New
case 24:
hash = sha512.New384
case 32:
hash = sha512.New
}
return &cbcAEAD{
hash: hash,
blockCipher: blockCipher,
authtagBytes: keySize,
integrityKey: integrityKey,
}, nil
}
// An AEAD based on CBC+HMAC
type cbcAEAD struct {
hash func() hash.Hash
authtagBytes int
integrityKey []byte
blockCipher cipher.Block
}
func (ctx *cbcAEAD) NonceSize() int {
return nonceBytes
}
func (ctx *cbcAEAD) Overhead() int {
// Maximum overhead is block size (for padding) plus auth tag length, where
// the length of the auth tag is equivalent to the key size.
return ctx.blockCipher.BlockSize() + ctx.authtagBytes
}
// Seal encrypts and authenticates the plaintext.
func (ctx *cbcAEAD) Seal(dst, nonce, plaintext, data []byte) []byte {
// Output buffer -- must take care not to mangle plaintext input.
ciphertext := make([]byte, uint64(len(plaintext))+uint64(ctx.Overhead()))[:len(plaintext)]
copy(ciphertext, plaintext)
ciphertext = padBuffer(ciphertext, ctx.blockCipher.BlockSize())
cbc := cipher.NewCBCEncrypter(ctx.blockCipher, nonce)
cbc.CryptBlocks(ciphertext, ciphertext)
authtag := ctx.computeAuthTag(data, nonce, ciphertext)
ret, out := resize(dst, uint64(len(dst))+uint64(len(ciphertext))+uint64(len(authtag)))
copy(out, ciphertext)
copy(out[len(ciphertext):], authtag)
return ret
}
// Open decrypts and authenticates the ciphertext.
func (ctx *cbcAEAD) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
if len(ciphertext) < ctx.authtagBytes {
return nil, errors.New("square/go-jose: invalid ciphertext (too short)")
}
offset := len(ciphertext) - ctx.authtagBytes
expectedTag := ctx.computeAuthTag(data, nonce, ciphertext[:offset])
match := subtle.ConstantTimeCompare(expectedTag, ciphertext[offset:])
if match != 1 {
return nil, errors.New("square/go-jose: invalid ciphertext (auth tag mismatch)")
}
cbc := cipher.NewCBCDecrypter(ctx.blockCipher, nonce)
// Make copy of ciphertext buffer, don't want to modify in place
buffer := append([]byte{}, []byte(ciphertext[:offset])...)
if len(buffer)%ctx.blockCipher.BlockSize() > 0 {
return nil, errors.New("square/go-jose: invalid ciphertext (invalid length)")
}
cbc.CryptBlocks(buffer, buffer)
// Remove padding
plaintext, err := unpadBuffer(buffer, ctx.blockCipher.BlockSize())
if err != nil {
return nil, err
}
ret, out := resize(dst, uint64(len(dst))+uint64(len(plaintext)))
copy(out, plaintext)
return ret, nil
}
// Compute an authentication tag
func (ctx *cbcAEAD) computeAuthTag(aad, nonce, ciphertext []byte) []byte {
buffer := make([]byte, uint64(len(aad))+uint64(len(nonce))+uint64(len(ciphertext))+8)
n := 0
n += copy(buffer, aad)
n += copy(buffer[n:], nonce)
n += copy(buffer[n:], ciphertext)
binary.BigEndian.PutUint64(buffer[n:], uint64(len(aad))*8)
// According to documentation, Write() on hash.Hash never fails.
hmac := hmac.New(ctx.hash, ctx.integrityKey)
_, _ = hmac.Write(buffer)
return hmac.Sum(nil)[:ctx.authtagBytes]
}
// resize ensures the the given slice has a capacity of at least n bytes.
// If the capacity of the slice is less than n, a new slice is allocated
// and the existing data will be copied.
func resize(in []byte, n uint64) (head, tail []byte) {
if uint64(cap(in)) >= n {
head = in[:n]
} else {
head = make([]byte, n)
copy(head, in)
}
tail = head[len(in):]
return
}
// Apply padding
func padBuffer(buffer []byte, blockSize int) []byte {
missing := blockSize - (len(buffer) % blockSize)
ret, out := resize(buffer, uint64(len(buffer))+uint64(missing))
padding := bytes.Repeat([]byte{byte(missing)}, missing)
copy(out, padding)
return ret
}
// Remove padding
func unpadBuffer(buffer []byte, blockSize int) ([]byte, error) {
if len(buffer)%blockSize != 0 {
return nil, errors.New("square/go-jose: invalid padding")
}
last := buffer[len(buffer)-1]
count := int(last)
if count == 0 || count > blockSize || count > len(buffer) {
return nil, errors.New("square/go-jose: invalid padding")
}
padding := bytes.Repeat([]byte{last}, count)
if !bytes.HasSuffix(buffer, padding) {
return nil, errors.New("square/go-jose: invalid padding")
}
return buffer[:len(buffer)-count], nil
}

75
vendor/gopkg.in/square/go-jose.v2/cipher/concat_kdf.go generated vendored Normal file
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@ -0,0 +1,75 @@
/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package josecipher
import (
"crypto"
"encoding/binary"
"hash"
"io"
)
type concatKDF struct {
z, info []byte
i uint32
cache []byte
hasher hash.Hash
}
// NewConcatKDF builds a KDF reader based on the given inputs.
func NewConcatKDF(hash crypto.Hash, z, algID, ptyUInfo, ptyVInfo, supPubInfo, supPrivInfo []byte) io.Reader {
buffer := make([]byte, uint64(len(algID))+uint64(len(ptyUInfo))+uint64(len(ptyVInfo))+uint64(len(supPubInfo))+uint64(len(supPrivInfo)))
n := 0
n += copy(buffer, algID)
n += copy(buffer[n:], ptyUInfo)
n += copy(buffer[n:], ptyVInfo)
n += copy(buffer[n:], supPubInfo)
copy(buffer[n:], supPrivInfo)
hasher := hash.New()
return &concatKDF{
z: z,
info: buffer,
hasher: hasher,
cache: []byte{},
i: 1,
}
}
func (ctx *concatKDF) Read(out []byte) (int, error) {
copied := copy(out, ctx.cache)
ctx.cache = ctx.cache[copied:]
for copied < len(out) {
ctx.hasher.Reset()
// Write on a hash.Hash never fails
_ = binary.Write(ctx.hasher, binary.BigEndian, ctx.i)
_, _ = ctx.hasher.Write(ctx.z)
_, _ = ctx.hasher.Write(ctx.info)
hash := ctx.hasher.Sum(nil)
chunkCopied := copy(out[copied:], hash)
copied += chunkCopied
ctx.cache = hash[chunkCopied:]
ctx.i++
}
return copied, nil
}

86
vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go generated vendored Normal file
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@ -0,0 +1,86 @@
/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package josecipher
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"encoding/binary"
)
// DeriveECDHES derives a shared encryption key using ECDH/ConcatKDF as described in JWE/JWA.
// It is an error to call this function with a private/public key that are not on the same
// curve. Callers must ensure that the keys are valid before calling this function. Output
// size may be at most 1<<16 bytes (64 KiB).
func DeriveECDHES(alg string, apuData, apvData []byte, priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey, size int) []byte {
if size > 1<<16 {
panic("ECDH-ES output size too large, must be less than or equal to 1<<16")
}
// algId, partyUInfo, partyVInfo inputs must be prefixed with the length
algID := lengthPrefixed([]byte(alg))
ptyUInfo := lengthPrefixed(apuData)
ptyVInfo := lengthPrefixed(apvData)
// suppPubInfo is the encoded length of the output size in bits
supPubInfo := make([]byte, 4)
binary.BigEndian.PutUint32(supPubInfo, uint32(size)*8)
if !priv.PublicKey.Curve.IsOnCurve(pub.X, pub.Y) {
panic("public key not on same curve as private key")
}
z, _ := priv.Curve.ScalarMult(pub.X, pub.Y, priv.D.Bytes())
zBytes := z.Bytes()
// Note that calling z.Bytes() on a big.Int may strip leading zero bytes from
// the returned byte array. This can lead to a problem where zBytes will be
// shorter than expected which breaks the key derivation. Therefore we must pad
// to the full length of the expected coordinate here before calling the KDF.
octSize := dSize(priv.Curve)
if len(zBytes) != octSize {
zBytes = append(bytes.Repeat([]byte{0}, octSize-len(zBytes)), zBytes...)
}
reader := NewConcatKDF(crypto.SHA256, zBytes, algID, ptyUInfo, ptyVInfo, supPubInfo, []byte{})
key := make([]byte, size)
// Read on the KDF will never fail
_, _ = reader.Read(key)
return key
}
// dSize returns the size in octets for a coordinate on a elliptic curve.
func dSize(curve elliptic.Curve) int {
order := curve.Params().P
bitLen := order.BitLen()
size := bitLen / 8
if bitLen%8 != 0 {
size++
}
return size
}
func lengthPrefixed(data []byte) []byte {
out := make([]byte, len(data)+4)
binary.BigEndian.PutUint32(out, uint32(len(data)))
copy(out[4:], data)
return out
}

109
vendor/gopkg.in/square/go-jose.v2/cipher/key_wrap.go generated vendored Normal file
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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package josecipher
import (
"crypto/cipher"
"crypto/subtle"
"encoding/binary"
"errors"
)
var defaultIV = []byte{0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6}
// KeyWrap implements NIST key wrapping; it wraps a content encryption key (cek) with the given block cipher.
func KeyWrap(block cipher.Block, cek []byte) ([]byte, error) {
if len(cek)%8 != 0 {
return nil, errors.New("square/go-jose: key wrap input must be 8 byte blocks")
}
n := len(cek) / 8
r := make([][]byte, n)
for i := range r {
r[i] = make([]byte, 8)
copy(r[i], cek[i*8:])
}
buffer := make([]byte, 16)
tBytes := make([]byte, 8)
copy(buffer, defaultIV)
for t := 0; t < 6*n; t++ {
copy(buffer[8:], r[t%n])
block.Encrypt(buffer, buffer)
binary.BigEndian.PutUint64(tBytes, uint64(t+1))
for i := 0; i < 8; i++ {
buffer[i] = buffer[i] ^ tBytes[i]
}
copy(r[t%n], buffer[8:])
}
out := make([]byte, (n+1)*8)
copy(out, buffer[:8])
for i := range r {
copy(out[(i+1)*8:], r[i])
}
return out, nil
}
// KeyUnwrap implements NIST key unwrapping; it unwraps a content encryption key (cek) with the given block cipher.
func KeyUnwrap(block cipher.Block, ciphertext []byte) ([]byte, error) {
if len(ciphertext)%8 != 0 {
return nil, errors.New("square/go-jose: key wrap input must be 8 byte blocks")
}
n := (len(ciphertext) / 8) - 1
r := make([][]byte, n)
for i := range r {
r[i] = make([]byte, 8)
copy(r[i], ciphertext[(i+1)*8:])
}
buffer := make([]byte, 16)
tBytes := make([]byte, 8)
copy(buffer[:8], ciphertext[:8])
for t := 6*n - 1; t >= 0; t-- {
binary.BigEndian.PutUint64(tBytes, uint64(t+1))
for i := 0; i < 8; i++ {
buffer[i] = buffer[i] ^ tBytes[i]
}
copy(buffer[8:], r[t%n])
block.Decrypt(buffer, buffer)
copy(r[t%n], buffer[8:])
}
if subtle.ConstantTimeCompare(buffer[:8], defaultIV) == 0 {
return nil, errors.New("square/go-jose: failed to unwrap key")
}
out := make([]byte, n*8)
for i := range r {
copy(out[i*8:], r[i])
}
return out, nil
}

541
vendor/gopkg.in/square/go-jose.v2/crypter.go generated vendored Normal file
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@ -0,0 +1,541 @@
/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"crypto/ecdsa"
"crypto/rsa"
"errors"
"fmt"
"reflect"
"gopkg.in/square/go-jose.v2/json"
)
// Encrypter represents an encrypter which produces an encrypted JWE object.
type Encrypter interface {
Encrypt(plaintext []byte) (*JSONWebEncryption, error)
EncryptWithAuthData(plaintext []byte, aad []byte) (*JSONWebEncryption, error)
Options() EncrypterOptions
}
// A generic content cipher
type contentCipher interface {
keySize() int
encrypt(cek []byte, aad, plaintext []byte) (*aeadParts, error)
decrypt(cek []byte, aad []byte, parts *aeadParts) ([]byte, error)
}
// A key generator (for generating/getting a CEK)
type keyGenerator interface {
keySize() int
genKey() ([]byte, rawHeader, error)
}
// A generic key encrypter
type keyEncrypter interface {
encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) // Encrypt a key
}
// A generic key decrypter
type keyDecrypter interface {
decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) // Decrypt a key
}
// A generic encrypter based on the given key encrypter and content cipher.
type genericEncrypter struct {
contentAlg ContentEncryption
compressionAlg CompressionAlgorithm
cipher contentCipher
recipients []recipientKeyInfo
keyGenerator keyGenerator
extraHeaders map[HeaderKey]interface{}
}
type recipientKeyInfo struct {
keyID string
keyAlg KeyAlgorithm
keyEncrypter keyEncrypter
}
// EncrypterOptions represents options that can be set on new encrypters.
type EncrypterOptions struct {
Compression CompressionAlgorithm
// Optional map of additional keys to be inserted into the protected header
// of a JWS object. Some specifications which make use of JWS like to insert
// additional values here. All values must be JSON-serializable.
ExtraHeaders map[HeaderKey]interface{}
}
// WithHeader adds an arbitrary value to the ExtraHeaders map, initializing it
// if necessary. It returns itself and so can be used in a fluent style.
func (eo *EncrypterOptions) WithHeader(k HeaderKey, v interface{}) *EncrypterOptions {
if eo.ExtraHeaders == nil {
eo.ExtraHeaders = map[HeaderKey]interface{}{}
}
eo.ExtraHeaders[k] = v
return eo
}
// WithContentType adds a content type ("cty") header and returns the updated
// EncrypterOptions.
func (eo *EncrypterOptions) WithContentType(contentType ContentType) *EncrypterOptions {
return eo.WithHeader(HeaderContentType, contentType)
}
// WithType adds a type ("typ") header and returns the updated EncrypterOptions.
func (eo *EncrypterOptions) WithType(typ ContentType) *EncrypterOptions {
return eo.WithHeader(HeaderType, typ)
}
// Recipient represents an algorithm/key to encrypt messages to.
//
// PBES2Count and PBES2Salt correspond with the "p2c" and "p2s" headers used
// on the password-based encryption algorithms PBES2-HS256+A128KW,
// PBES2-HS384+A192KW, and PBES2-HS512+A256KW. If they are not provided a safe
// default of 100000 will be used for the count and a 128-bit random salt will
// be generated.
type Recipient struct {
Algorithm KeyAlgorithm
Key interface{}
KeyID string
PBES2Count int
PBES2Salt []byte
}
// NewEncrypter creates an appropriate encrypter based on the key type
func NewEncrypter(enc ContentEncryption, rcpt Recipient, opts *EncrypterOptions) (Encrypter, error) {
encrypter := &genericEncrypter{
contentAlg: enc,
recipients: []recipientKeyInfo{},
cipher: getContentCipher(enc),
}
if opts != nil {
encrypter.compressionAlg = opts.Compression
encrypter.extraHeaders = opts.ExtraHeaders
}
if encrypter.cipher == nil {
return nil, ErrUnsupportedAlgorithm
}
var keyID string
var rawKey interface{}
switch encryptionKey := rcpt.Key.(type) {
case JSONWebKey:
keyID, rawKey = encryptionKey.KeyID, encryptionKey.Key
case *JSONWebKey:
keyID, rawKey = encryptionKey.KeyID, encryptionKey.Key
case OpaqueKeyEncrypter:
keyID, rawKey = encryptionKey.KeyID(), encryptionKey
default:
rawKey = encryptionKey
}
switch rcpt.Algorithm {
case DIRECT:
// Direct encryption mode must be treated differently
if reflect.TypeOf(rawKey) != reflect.TypeOf([]byte{}) {
return nil, ErrUnsupportedKeyType
}
if encrypter.cipher.keySize() != len(rawKey.([]byte)) {
return nil, ErrInvalidKeySize
}
encrypter.keyGenerator = staticKeyGenerator{
key: rawKey.([]byte),
}
recipientInfo, _ := newSymmetricRecipient(rcpt.Algorithm, rawKey.([]byte))
recipientInfo.keyID = keyID
if rcpt.KeyID != "" {
recipientInfo.keyID = rcpt.KeyID
}
encrypter.recipients = []recipientKeyInfo{recipientInfo}
return encrypter, nil
case ECDH_ES:
// ECDH-ES (w/o key wrapping) is similar to DIRECT mode
typeOf := reflect.TypeOf(rawKey)
if typeOf != reflect.TypeOf(&ecdsa.PublicKey{}) {
return nil, ErrUnsupportedKeyType
}
encrypter.keyGenerator = ecKeyGenerator{
size: encrypter.cipher.keySize(),
algID: string(enc),
publicKey: rawKey.(*ecdsa.PublicKey),
}
recipientInfo, _ := newECDHRecipient(rcpt.Algorithm, rawKey.(*ecdsa.PublicKey))
recipientInfo.keyID = keyID
if rcpt.KeyID != "" {
recipientInfo.keyID = rcpt.KeyID
}
encrypter.recipients = []recipientKeyInfo{recipientInfo}
return encrypter, nil
default:
// Can just add a standard recipient
encrypter.keyGenerator = randomKeyGenerator{
size: encrypter.cipher.keySize(),
}
err := encrypter.addRecipient(rcpt)
return encrypter, err
}
}
// NewMultiEncrypter creates a multi-encrypter based on the given parameters
func NewMultiEncrypter(enc ContentEncryption, rcpts []Recipient, opts *EncrypterOptions) (Encrypter, error) {
cipher := getContentCipher(enc)
if cipher == nil {
return nil, ErrUnsupportedAlgorithm
}
if rcpts == nil || len(rcpts) == 0 {
return nil, fmt.Errorf("square/go-jose: recipients is nil or empty")
}
encrypter := &genericEncrypter{
contentAlg: enc,
recipients: []recipientKeyInfo{},
cipher: cipher,
keyGenerator: randomKeyGenerator{
size: cipher.keySize(),
},
}
if opts != nil {
encrypter.compressionAlg = opts.Compression
}
for _, recipient := range rcpts {
err := encrypter.addRecipient(recipient)
if err != nil {
return nil, err
}
}
return encrypter, nil
}
func (ctx *genericEncrypter) addRecipient(recipient Recipient) (err error) {
var recipientInfo recipientKeyInfo
switch recipient.Algorithm {
case DIRECT, ECDH_ES:
return fmt.Errorf("square/go-jose: key algorithm '%s' not supported in multi-recipient mode", recipient.Algorithm)
}
recipientInfo, err = makeJWERecipient(recipient.Algorithm, recipient.Key)
if recipient.KeyID != "" {
recipientInfo.keyID = recipient.KeyID
}
switch recipient.Algorithm {
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
if sr, ok := recipientInfo.keyEncrypter.(*symmetricKeyCipher); ok {
sr.p2c = recipient.PBES2Count
sr.p2s = recipient.PBES2Salt
}
}
if err == nil {
ctx.recipients = append(ctx.recipients, recipientInfo)
}
return err
}
func makeJWERecipient(alg KeyAlgorithm, encryptionKey interface{}) (recipientKeyInfo, error) {
switch encryptionKey := encryptionKey.(type) {
case *rsa.PublicKey:
return newRSARecipient(alg, encryptionKey)
case *ecdsa.PublicKey:
return newECDHRecipient(alg, encryptionKey)
case []byte:
return newSymmetricRecipient(alg, encryptionKey)
case string:
return newSymmetricRecipient(alg, []byte(encryptionKey))
case *JSONWebKey:
recipient, err := makeJWERecipient(alg, encryptionKey.Key)
recipient.keyID = encryptionKey.KeyID
return recipient, err
}
if encrypter, ok := encryptionKey.(OpaqueKeyEncrypter); ok {
return newOpaqueKeyEncrypter(alg, encrypter)
}
return recipientKeyInfo{}, ErrUnsupportedKeyType
}
// newDecrypter creates an appropriate decrypter based on the key type
func newDecrypter(decryptionKey interface{}) (keyDecrypter, error) {
switch decryptionKey := decryptionKey.(type) {
case *rsa.PrivateKey:
return &rsaDecrypterSigner{
privateKey: decryptionKey,
}, nil
case *ecdsa.PrivateKey:
return &ecDecrypterSigner{
privateKey: decryptionKey,
}, nil
case []byte:
return &symmetricKeyCipher{
key: decryptionKey,
}, nil
case string:
return &symmetricKeyCipher{
key: []byte(decryptionKey),
}, nil
case JSONWebKey:
return newDecrypter(decryptionKey.Key)
case *JSONWebKey:
return newDecrypter(decryptionKey.Key)
}
if okd, ok := decryptionKey.(OpaqueKeyDecrypter); ok {
return &opaqueKeyDecrypter{decrypter: okd}, nil
}
return nil, ErrUnsupportedKeyType
}
// Implementation of encrypt method producing a JWE object.
func (ctx *genericEncrypter) Encrypt(plaintext []byte) (*JSONWebEncryption, error) {
return ctx.EncryptWithAuthData(plaintext, nil)
}
// Implementation of encrypt method producing a JWE object.
func (ctx *genericEncrypter) EncryptWithAuthData(plaintext, aad []byte) (*JSONWebEncryption, error) {
obj := &JSONWebEncryption{}
obj.aad = aad
obj.protected = &rawHeader{}
err := obj.protected.set(headerEncryption, ctx.contentAlg)
if err != nil {
return nil, err
}
obj.recipients = make([]recipientInfo, len(ctx.recipients))
if len(ctx.recipients) == 0 {
return nil, fmt.Errorf("square/go-jose: no recipients to encrypt to")
}
cek, headers, err := ctx.keyGenerator.genKey()
if err != nil {
return nil, err
}
obj.protected.merge(&headers)
for i, info := range ctx.recipients {
recipient, err := info.keyEncrypter.encryptKey(cek, info.keyAlg)
if err != nil {
return nil, err
}
err = recipient.header.set(headerAlgorithm, info.keyAlg)
if err != nil {
return nil, err
}
if info.keyID != "" {
err = recipient.header.set(headerKeyID, info.keyID)
if err != nil {
return nil, err
}
}
obj.recipients[i] = recipient
}
if len(ctx.recipients) == 1 {
// Move per-recipient headers into main protected header if there's
// only a single recipient.
obj.protected.merge(obj.recipients[0].header)
obj.recipients[0].header = nil
}
if ctx.compressionAlg != NONE {
plaintext, err = compress(ctx.compressionAlg, plaintext)
if err != nil {
return nil, err
}
err = obj.protected.set(headerCompression, ctx.compressionAlg)
if err != nil {
return nil, err
}
}
for k, v := range ctx.extraHeaders {
b, err := json.Marshal(v)
if err != nil {
return nil, err
}
(*obj.protected)[k] = makeRawMessage(b)
}
authData := obj.computeAuthData()
parts, err := ctx.cipher.encrypt(cek, authData, plaintext)
if err != nil {
return nil, err
}
obj.iv = parts.iv
obj.ciphertext = parts.ciphertext
obj.tag = parts.tag
return obj, nil
}
func (ctx *genericEncrypter) Options() EncrypterOptions {
return EncrypterOptions{
Compression: ctx.compressionAlg,
ExtraHeaders: ctx.extraHeaders,
}
}
// Decrypt and validate the object and return the plaintext. Note that this
// function does not support multi-recipient, if you desire multi-recipient
// decryption use DecryptMulti instead.
func (obj JSONWebEncryption) Decrypt(decryptionKey interface{}) ([]byte, error) {
headers := obj.mergedHeaders(nil)
if len(obj.recipients) > 1 {
return nil, errors.New("square/go-jose: too many recipients in payload; expecting only one")
}
critical, err := headers.getCritical()
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid crit header")
}
if len(critical) > 0 {
return nil, fmt.Errorf("square/go-jose: unsupported crit header")
}
decrypter, err := newDecrypter(decryptionKey)
if err != nil {
return nil, err
}
cipher := getContentCipher(headers.getEncryption())
if cipher == nil {
return nil, fmt.Errorf("square/go-jose: unsupported enc value '%s'", string(headers.getEncryption()))
}
generator := randomKeyGenerator{
size: cipher.keySize(),
}
parts := &aeadParts{
iv: obj.iv,
ciphertext: obj.ciphertext,
tag: obj.tag,
}
authData := obj.computeAuthData()
var plaintext []byte
recipient := obj.recipients[0]
recipientHeaders := obj.mergedHeaders(&recipient)
cek, err := decrypter.decryptKey(recipientHeaders, &recipient, generator)
if err == nil {
// Found a valid CEK -- let's try to decrypt.
plaintext, err = cipher.decrypt(cek, authData, parts)
}
if plaintext == nil {
return nil, ErrCryptoFailure
}
// The "zip" header parameter may only be present in the protected header.
if comp := obj.protected.getCompression(); comp != "" {
plaintext, err = decompress(comp, plaintext)
}
return plaintext, err
}
// DecryptMulti decrypts and validates the object and returns the plaintexts,
// with support for multiple recipients. It returns the index of the recipient
// for which the decryption was successful, the merged headers for that recipient,
// and the plaintext.
func (obj JSONWebEncryption) DecryptMulti(decryptionKey interface{}) (int, Header, []byte, error) {
globalHeaders := obj.mergedHeaders(nil)
critical, err := globalHeaders.getCritical()
if err != nil {
return -1, Header{}, nil, fmt.Errorf("square/go-jose: invalid crit header")
}
if len(critical) > 0 {
return -1, Header{}, nil, fmt.Errorf("square/go-jose: unsupported crit header")
}
decrypter, err := newDecrypter(decryptionKey)
if err != nil {
return -1, Header{}, nil, err
}
encryption := globalHeaders.getEncryption()
cipher := getContentCipher(encryption)
if cipher == nil {
return -1, Header{}, nil, fmt.Errorf("square/go-jose: unsupported enc value '%s'", string(encryption))
}
generator := randomKeyGenerator{
size: cipher.keySize(),
}
parts := &aeadParts{
iv: obj.iv,
ciphertext: obj.ciphertext,
tag: obj.tag,
}
authData := obj.computeAuthData()
index := -1
var plaintext []byte
var headers rawHeader
for i, recipient := range obj.recipients {
recipientHeaders := obj.mergedHeaders(&recipient)
cek, err := decrypter.decryptKey(recipientHeaders, &recipient, generator)
if err == nil {
// Found a valid CEK -- let's try to decrypt.
plaintext, err = cipher.decrypt(cek, authData, parts)
if err == nil {
index = i
headers = recipientHeaders
break
}
}
}
if plaintext == nil || err != nil {
return -1, Header{}, nil, ErrCryptoFailure
}
// The "zip" header parameter may only be present in the protected header.
if comp := obj.protected.getCompression(); comp != "" {
plaintext, err = decompress(comp, plaintext)
}
sanitized, err := headers.sanitized()
if err != nil {
return -1, Header{}, nil, fmt.Errorf("square/go-jose: failed to sanitize header: %v", err)
}
return index, sanitized, plaintext, err
}

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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
Package jose aims to provide an implementation of the Javascript Object Signing
and Encryption set of standards. It implements encryption and signing based on
the JSON Web Encryption and JSON Web Signature standards, with optional JSON
Web Token support available in a sub-package. The library supports both the
compact and full serialization formats, and has optional support for multiple
recipients.
*/
package jose

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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"bytes"
"compress/flate"
"encoding/base64"
"encoding/binary"
"io"
"math/big"
"strings"
"unicode"
"gopkg.in/square/go-jose.v2/json"
)
// Helper function to serialize known-good objects.
// Precondition: value is not a nil pointer.
func mustSerializeJSON(value interface{}) []byte {
out, err := json.Marshal(value)
if err != nil {
panic(err)
}
// We never want to serialize the top-level value "null," since it's not a
// valid JOSE message. But if a caller passes in a nil pointer to this method,
// MarshalJSON will happily serialize it as the top-level value "null". If
// that value is then embedded in another operation, for instance by being
// base64-encoded and fed as input to a signing algorithm
// (https://github.com/square/go-jose/issues/22), the result will be
// incorrect. Because this method is intended for known-good objects, and a nil
// pointer is not a known-good object, we are free to panic in this case.
// Note: It's not possible to directly check whether the data pointed at by an
// interface is a nil pointer, so we do this hacky workaround.
// https://groups.google.com/forum/#!topic/golang-nuts/wnH302gBa4I
if string(out) == "null" {
panic("Tried to serialize a nil pointer.")
}
return out
}
// Strip all newlines and whitespace
func stripWhitespace(data string) string {
buf := strings.Builder{}
buf.Grow(len(data))
for _, r := range data {
if !unicode.IsSpace(r) {
buf.WriteRune(r)
}
}
return buf.String()
}
// Perform compression based on algorithm
func compress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) {
switch algorithm {
case DEFLATE:
return deflate(input)
default:
return nil, ErrUnsupportedAlgorithm
}
}
// Perform decompression based on algorithm
func decompress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) {
switch algorithm {
case DEFLATE:
return inflate(input)
default:
return nil, ErrUnsupportedAlgorithm
}
}
// Compress with DEFLATE
func deflate(input []byte) ([]byte, error) {
output := new(bytes.Buffer)
// Writing to byte buffer, err is always nil
writer, _ := flate.NewWriter(output, 1)
_, _ = io.Copy(writer, bytes.NewBuffer(input))
err := writer.Close()
return output.Bytes(), err
}
// Decompress with DEFLATE
func inflate(input []byte) ([]byte, error) {
output := new(bytes.Buffer)
reader := flate.NewReader(bytes.NewBuffer(input))
_, err := io.Copy(output, reader)
if err != nil {
return nil, err
}
err = reader.Close()
return output.Bytes(), err
}
// byteBuffer represents a slice of bytes that can be serialized to url-safe base64.
type byteBuffer struct {
data []byte
}
func newBuffer(data []byte) *byteBuffer {
if data == nil {
return nil
}
return &byteBuffer{
data: data,
}
}
func newFixedSizeBuffer(data []byte, length int) *byteBuffer {
if len(data) > length {
panic("square/go-jose: invalid call to newFixedSizeBuffer (len(data) > length)")
}
pad := make([]byte, length-len(data))
return newBuffer(append(pad, data...))
}
func newBufferFromInt(num uint64) *byteBuffer {
data := make([]byte, 8)
binary.BigEndian.PutUint64(data, num)
return newBuffer(bytes.TrimLeft(data, "\x00"))
}
func (b *byteBuffer) MarshalJSON() ([]byte, error) {
return json.Marshal(b.base64())
}
func (b *byteBuffer) UnmarshalJSON(data []byte) error {
var encoded string
err := json.Unmarshal(data, &encoded)
if err != nil {
return err
}
if encoded == "" {
return nil
}
decoded, err := base64.RawURLEncoding.DecodeString(encoded)
if err != nil {
return err
}
*b = *newBuffer(decoded)
return nil
}
func (b *byteBuffer) base64() string {
return base64.RawURLEncoding.EncodeToString(b.data)
}
func (b *byteBuffer) bytes() []byte {
// Handling nil here allows us to transparently handle nil slices when serializing.
if b == nil {
return nil
}
return b.data
}
func (b byteBuffer) bigInt() *big.Int {
return new(big.Int).SetBytes(b.data)
}
func (b byteBuffer) toInt() int {
return int(b.bigInt().Int64())
}

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Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# Safe JSON
This repository contains a fork of the `encoding/json` package from Go 1.6.
The following changes were made:
* Object deserialization uses case-sensitive member name matching instead of
[case-insensitive matching](https://www.ietf.org/mail-archive/web/json/current/msg03763.html).
This is to avoid differences in the interpretation of JOSE messages between
go-jose and libraries written in other languages.
* When deserializing a JSON object, we check for duplicate keys and reject the
input whenever we detect a duplicate. Rather than trying to work with malformed
data, we prefer to reject it right away.

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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package json
import "bytes"
// Compact appends to dst the JSON-encoded src with
// insignificant space characters elided.
func Compact(dst *bytes.Buffer, src []byte) error {
return compact(dst, src, false)
}
func compact(dst *bytes.Buffer, src []byte, escape bool) error {
origLen := dst.Len()
var scan scanner
scan.reset()
start := 0
for i, c := range src {
if escape && (c == '<' || c == '>' || c == '&') {
if start < i {
dst.Write(src[start:i])
}
dst.WriteString(`\u00`)
dst.WriteByte(hex[c>>4])
dst.WriteByte(hex[c&0xF])
start = i + 1
}
// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
if c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
if start < i {
dst.Write(src[start:i])
}
dst.WriteString(`\u202`)
dst.WriteByte(hex[src[i+2]&0xF])
start = i + 3
}
v := scan.step(&scan, c)
if v >= scanSkipSpace {
if v == scanError {
break
}
if start < i {
dst.Write(src[start:i])
}
start = i + 1
}
}
if scan.eof() == scanError {
dst.Truncate(origLen)
return scan.err
}
if start < len(src) {
dst.Write(src[start:])
}
return nil
}
func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
dst.WriteByte('\n')
dst.WriteString(prefix)
for i := 0; i < depth; i++ {
dst.WriteString(indent)
}
}
// Indent appends to dst an indented form of the JSON-encoded src.
// Each element in a JSON object or array begins on a new,
// indented line beginning with prefix followed by one or more
// copies of indent according to the indentation nesting.
// The data appended to dst does not begin with the prefix nor
// any indentation, to make it easier to embed inside other formatted JSON data.
// Although leading space characters (space, tab, carriage return, newline)
// at the beginning of src are dropped, trailing space characters
// at the end of src are preserved and copied to dst.
// For example, if src has no trailing spaces, neither will dst;
// if src ends in a trailing newline, so will dst.
func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
origLen := dst.Len()
var scan scanner
scan.reset()
needIndent := false
depth := 0
for _, c := range src {
scan.bytes++
v := scan.step(&scan, c)
if v == scanSkipSpace {
continue
}
if v == scanError {
break
}
if needIndent && v != scanEndObject && v != scanEndArray {
needIndent = false
depth++
newline(dst, prefix, indent, depth)
}
// Emit semantically uninteresting bytes
// (in particular, punctuation in strings) unmodified.
if v == scanContinue {
dst.WriteByte(c)
continue
}
// Add spacing around real punctuation.
switch c {
case '{', '[':
// delay indent so that empty object and array are formatted as {} and [].
needIndent = true
dst.WriteByte(c)
case ',':
dst.WriteByte(c)
newline(dst, prefix, indent, depth)
case ':':
dst.WriteByte(c)
dst.WriteByte(' ')
case '}', ']':
if needIndent {
// suppress indent in empty object/array
needIndent = false
} else {
depth--
newline(dst, prefix, indent, depth)
}
dst.WriteByte(c)
default:
dst.WriteByte(c)
}
}
if scan.eof() == scanError {
dst.Truncate(origLen)
return scan.err
}
return nil
}

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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package json
// JSON value parser state machine.
// Just about at the limit of what is reasonable to write by hand.
// Some parts are a bit tedious, but overall it nicely factors out the
// otherwise common code from the multiple scanning functions
// in this package (Compact, Indent, checkValid, nextValue, etc).
//
// This file starts with two simple examples using the scanner
// before diving into the scanner itself.
import "strconv"
// checkValid verifies that data is valid JSON-encoded data.
// scan is passed in for use by checkValid to avoid an allocation.
func checkValid(data []byte, scan *scanner) error {
scan.reset()
for _, c := range data {
scan.bytes++
if scan.step(scan, c) == scanError {
return scan.err
}
}
if scan.eof() == scanError {
return scan.err
}
return nil
}
// nextValue splits data after the next whole JSON value,
// returning that value and the bytes that follow it as separate slices.
// scan is passed in for use by nextValue to avoid an allocation.
func nextValue(data []byte, scan *scanner) (value, rest []byte, err error) {
scan.reset()
for i, c := range data {
v := scan.step(scan, c)
if v >= scanEndObject {
switch v {
// probe the scanner with a space to determine whether we will
// get scanEnd on the next character. Otherwise, if the next character
// is not a space, scanEndTop allocates a needless error.
case scanEndObject, scanEndArray:
if scan.step(scan, ' ') == scanEnd {
return data[:i+1], data[i+1:], nil
}
case scanError:
return nil, nil, scan.err
case scanEnd:
return data[:i], data[i:], nil
}
}
}
if scan.eof() == scanError {
return nil, nil, scan.err
}
return data, nil, nil
}
// A SyntaxError is a description of a JSON syntax error.
type SyntaxError struct {
msg string // description of error
Offset int64 // error occurred after reading Offset bytes
}
func (e *SyntaxError) Error() string { return e.msg }
// A scanner is a JSON scanning state machine.
// Callers call scan.reset() and then pass bytes in one at a time
// by calling scan.step(&scan, c) for each byte.
// The return value, referred to as an opcode, tells the
// caller about significant parsing events like beginning
// and ending literals, objects, and arrays, so that the
// caller can follow along if it wishes.
// The return value scanEnd indicates that a single top-level
// JSON value has been completed, *before* the byte that
// just got passed in. (The indication must be delayed in order
// to recognize the end of numbers: is 123 a whole value or
// the beginning of 12345e+6?).
type scanner struct {
// The step is a func to be called to execute the next transition.
// Also tried using an integer constant and a single func
// with a switch, but using the func directly was 10% faster
// on a 64-bit Mac Mini, and it's nicer to read.
step func(*scanner, byte) int
// Reached end of top-level value.
endTop bool
// Stack of what we're in the middle of - array values, object keys, object values.
parseState []int
// Error that happened, if any.
err error
// 1-byte redo (see undo method)
redo bool
redoCode int
redoState func(*scanner, byte) int
// total bytes consumed, updated by decoder.Decode
bytes int64
}
// These values are returned by the state transition functions
// assigned to scanner.state and the method scanner.eof.
// They give details about the current state of the scan that
// callers might be interested to know about.
// It is okay to ignore the return value of any particular
// call to scanner.state: if one call returns scanError,
// every subsequent call will return scanError too.
const (
// Continue.
scanContinue = iota // uninteresting byte
scanBeginLiteral // end implied by next result != scanContinue
scanBeginObject // begin object
scanObjectKey // just finished object key (string)
scanObjectValue // just finished non-last object value
scanEndObject // end object (implies scanObjectValue if possible)
scanBeginArray // begin array
scanArrayValue // just finished array value
scanEndArray // end array (implies scanArrayValue if possible)
scanSkipSpace // space byte; can skip; known to be last "continue" result
// Stop.
scanEnd // top-level value ended *before* this byte; known to be first "stop" result
scanError // hit an error, scanner.err.
)
// These values are stored in the parseState stack.
// They give the current state of a composite value
// being scanned. If the parser is inside a nested value
// the parseState describes the nested state, outermost at entry 0.
const (
parseObjectKey = iota // parsing object key (before colon)
parseObjectValue // parsing object value (after colon)
parseArrayValue // parsing array value
)
// reset prepares the scanner for use.
// It must be called before calling s.step.
func (s *scanner) reset() {
s.step = stateBeginValue
s.parseState = s.parseState[0:0]
s.err = nil
s.redo = false
s.endTop = false
}
// eof tells the scanner that the end of input has been reached.
// It returns a scan status just as s.step does.
func (s *scanner) eof() int {
if s.err != nil {
return scanError
}
if s.endTop {
return scanEnd
}
s.step(s, ' ')
if s.endTop {
return scanEnd
}
if s.err == nil {
s.err = &SyntaxError{"unexpected end of JSON input", s.bytes}
}
return scanError
}
// pushParseState pushes a new parse state p onto the parse stack.
func (s *scanner) pushParseState(p int) {
s.parseState = append(s.parseState, p)
}
// popParseState pops a parse state (already obtained) off the stack
// and updates s.step accordingly.
func (s *scanner) popParseState() {
n := len(s.parseState) - 1
s.parseState = s.parseState[0:n]
s.redo = false
if n == 0 {
s.step = stateEndTop
s.endTop = true
} else {
s.step = stateEndValue
}
}
func isSpace(c byte) bool {
return c == ' ' || c == '\t' || c == '\r' || c == '\n'
}
// stateBeginValueOrEmpty is the state after reading `[`.
func stateBeginValueOrEmpty(s *scanner, c byte) int {
if c <= ' ' && isSpace(c) {
return scanSkipSpace
}
if c == ']' {
return stateEndValue(s, c)
}
return stateBeginValue(s, c)
}
// stateBeginValue is the state at the beginning of the input.
func stateBeginValue(s *scanner, c byte) int {
if c <= ' ' && isSpace(c) {
return scanSkipSpace
}
switch c {
case '{':
s.step = stateBeginStringOrEmpty
s.pushParseState(parseObjectKey)
return scanBeginObject
case '[':
s.step = stateBeginValueOrEmpty
s.pushParseState(parseArrayValue)
return scanBeginArray
case '"':
s.step = stateInString
return scanBeginLiteral
case '-':
s.step = stateNeg
return scanBeginLiteral
case '0': // beginning of 0.123
s.step = state0
return scanBeginLiteral
case 't': // beginning of true
s.step = stateT
return scanBeginLiteral
case 'f': // beginning of false
s.step = stateF
return scanBeginLiteral
case 'n': // beginning of null
s.step = stateN
return scanBeginLiteral
}
if '1' <= c && c <= '9' { // beginning of 1234.5
s.step = state1
return scanBeginLiteral
}
return s.error(c, "looking for beginning of value")
}
// stateBeginStringOrEmpty is the state after reading `{`.
func stateBeginStringOrEmpty(s *scanner, c byte) int {
if c <= ' ' && isSpace(c) {
return scanSkipSpace
}
if c == '}' {
n := len(s.parseState)
s.parseState[n-1] = parseObjectValue
return stateEndValue(s, c)
}
return stateBeginString(s, c)
}
// stateBeginString is the state after reading `{"key": value,`.
func stateBeginString(s *scanner, c byte) int {
if c <= ' ' && isSpace(c) {
return scanSkipSpace
}
if c == '"' {
s.step = stateInString
return scanBeginLiteral
}
return s.error(c, "looking for beginning of object key string")
}
// stateEndValue is the state after completing a value,
// such as after reading `{}` or `true` or `["x"`.
func stateEndValue(s *scanner, c byte) int {
n := len(s.parseState)
if n == 0 {
// Completed top-level before the current byte.
s.step = stateEndTop
s.endTop = true
return stateEndTop(s, c)
}
if c <= ' ' && isSpace(c) {
s.step = stateEndValue
return scanSkipSpace
}
ps := s.parseState[n-1]
switch ps {
case parseObjectKey:
if c == ':' {
s.parseState[n-1] = parseObjectValue
s.step = stateBeginValue
return scanObjectKey
}
return s.error(c, "after object key")
case parseObjectValue:
if c == ',' {
s.parseState[n-1] = parseObjectKey
s.step = stateBeginString
return scanObjectValue
}
if c == '}' {
s.popParseState()
return scanEndObject
}
return s.error(c, "after object key:value pair")
case parseArrayValue:
if c == ',' {
s.step = stateBeginValue
return scanArrayValue
}
if c == ']' {
s.popParseState()
return scanEndArray
}
return s.error(c, "after array element")
}
return s.error(c, "")
}
// stateEndTop is the state after finishing the top-level value,
// such as after reading `{}` or `[1,2,3]`.
// Only space characters should be seen now.
func stateEndTop(s *scanner, c byte) int {
if c != ' ' && c != '\t' && c != '\r' && c != '\n' {
// Complain about non-space byte on next call.
s.error(c, "after top-level value")
}
return scanEnd
}
// stateInString is the state after reading `"`.
func stateInString(s *scanner, c byte) int {
if c == '"' {
s.step = stateEndValue
return scanContinue
}
if c == '\\' {
s.step = stateInStringEsc
return scanContinue
}
if c < 0x20 {
return s.error(c, "in string literal")
}
return scanContinue
}
// stateInStringEsc is the state after reading `"\` during a quoted string.
func stateInStringEsc(s *scanner, c byte) int {
switch c {
case 'b', 'f', 'n', 'r', 't', '\\', '/', '"':
s.step = stateInString
return scanContinue
case 'u':
s.step = stateInStringEscU
return scanContinue
}
return s.error(c, "in string escape code")
}
// stateInStringEscU is the state after reading `"\u` during a quoted string.
func stateInStringEscU(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU1
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU1 is the state after reading `"\u1` during a quoted string.
func stateInStringEscU1(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU12
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU12 is the state after reading `"\u12` during a quoted string.
func stateInStringEscU12(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU123
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU123 is the state after reading `"\u123` during a quoted string.
func stateInStringEscU123(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInString
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateNeg is the state after reading `-` during a number.
func stateNeg(s *scanner, c byte) int {
if c == '0' {
s.step = state0
return scanContinue
}
if '1' <= c && c <= '9' {
s.step = state1
return scanContinue
}
return s.error(c, "in numeric literal")
}
// state1 is the state after reading a non-zero integer during a number,
// such as after reading `1` or `100` but not `0`.
func state1(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = state1
return scanContinue
}
return state0(s, c)
}
// state0 is the state after reading `0` during a number.
func state0(s *scanner, c byte) int {
if c == '.' {
s.step = stateDot
return scanContinue
}
if c == 'e' || c == 'E' {
s.step = stateE
return scanContinue
}
return stateEndValue(s, c)
}
// stateDot is the state after reading the integer and decimal point in a number,
// such as after reading `1.`.
func stateDot(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = stateDot0
return scanContinue
}
return s.error(c, "after decimal point in numeric literal")
}
// stateDot0 is the state after reading the integer, decimal point, and subsequent
// digits of a number, such as after reading `3.14`.
func stateDot0(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
return scanContinue
}
if c == 'e' || c == 'E' {
s.step = stateE
return scanContinue
}
return stateEndValue(s, c)
}
// stateE is the state after reading the mantissa and e in a number,
// such as after reading `314e` or `0.314e`.
func stateE(s *scanner, c byte) int {
if c == '+' || c == '-' {
s.step = stateESign
return scanContinue
}
return stateESign(s, c)
}
// stateESign is the state after reading the mantissa, e, and sign in a number,
// such as after reading `314e-` or `0.314e+`.
func stateESign(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = stateE0
return scanContinue
}
return s.error(c, "in exponent of numeric literal")
}
// stateE0 is the state after reading the mantissa, e, optional sign,
// and at least one digit of the exponent in a number,
// such as after reading `314e-2` or `0.314e+1` or `3.14e0`.
func stateE0(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
return scanContinue
}
return stateEndValue(s, c)
}
// stateT is the state after reading `t`.
func stateT(s *scanner, c byte) int {
if c == 'r' {
s.step = stateTr
return scanContinue
}
return s.error(c, "in literal true (expecting 'r')")
}
// stateTr is the state after reading `tr`.
func stateTr(s *scanner, c byte) int {
if c == 'u' {
s.step = stateTru
return scanContinue
}
return s.error(c, "in literal true (expecting 'u')")
}
// stateTru is the state after reading `tru`.
func stateTru(s *scanner, c byte) int {
if c == 'e' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal true (expecting 'e')")
}
// stateF is the state after reading `f`.
func stateF(s *scanner, c byte) int {
if c == 'a' {
s.step = stateFa
return scanContinue
}
return s.error(c, "in literal false (expecting 'a')")
}
// stateFa is the state after reading `fa`.
func stateFa(s *scanner, c byte) int {
if c == 'l' {
s.step = stateFal
return scanContinue
}
return s.error(c, "in literal false (expecting 'l')")
}
// stateFal is the state after reading `fal`.
func stateFal(s *scanner, c byte) int {
if c == 's' {
s.step = stateFals
return scanContinue
}
return s.error(c, "in literal false (expecting 's')")
}
// stateFals is the state after reading `fals`.
func stateFals(s *scanner, c byte) int {
if c == 'e' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal false (expecting 'e')")
}
// stateN is the state after reading `n`.
func stateN(s *scanner, c byte) int {
if c == 'u' {
s.step = stateNu
return scanContinue
}
return s.error(c, "in literal null (expecting 'u')")
}
// stateNu is the state after reading `nu`.
func stateNu(s *scanner, c byte) int {
if c == 'l' {
s.step = stateNul
return scanContinue
}
return s.error(c, "in literal null (expecting 'l')")
}
// stateNul is the state after reading `nul`.
func stateNul(s *scanner, c byte) int {
if c == 'l' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal null (expecting 'l')")
}
// stateError is the state after reaching a syntax error,
// such as after reading `[1}` or `5.1.2`.
func stateError(s *scanner, c byte) int {
return scanError
}
// error records an error and switches to the error state.
func (s *scanner) error(c byte, context string) int {
s.step = stateError
s.err = &SyntaxError{"invalid character " + quoteChar(c) + " " + context, s.bytes}
return scanError
}
// quoteChar formats c as a quoted character literal
func quoteChar(c byte) string {
// special cases - different from quoted strings
if c == '\'' {
return `'\''`
}
if c == '"' {
return `'"'`
}
// use quoted string with different quotation marks
s := strconv.Quote(string(c))
return "'" + s[1:len(s)-1] + "'"
}
// undo causes the scanner to return scanCode from the next state transition.
// This gives callers a simple 1-byte undo mechanism.
func (s *scanner) undo(scanCode int) {
if s.redo {
panic("json: invalid use of scanner")
}
s.redoCode = scanCode
s.redoState = s.step
s.step = stateRedo
s.redo = true
}
// stateRedo helps implement the scanner's 1-byte undo.
func stateRedo(s *scanner, c byte) int {
s.redo = false
s.step = s.redoState
return s.redoCode
}

480
vendor/gopkg.in/square/go-jose.v2/json/stream.go generated vendored Normal file
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@ -0,0 +1,480 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package json
import (
"bytes"
"errors"
"io"
)
// A Decoder reads and decodes JSON objects from an input stream.
type Decoder struct {
r io.Reader
buf []byte
d decodeState
scanp int // start of unread data in buf
scan scanner
err error
tokenState int
tokenStack []int
}
// NewDecoder returns a new decoder that reads from r.
//
// The decoder introduces its own buffering and may
// read data from r beyond the JSON values requested.
func NewDecoder(r io.Reader) *Decoder {
return &Decoder{r: r}
}
// UseNumber causes the Decoder to unmarshal a number into an interface{} as a
// Number instead of as a float64.
func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
// Decode reads the next JSON-encoded value from its
// input and stores it in the value pointed to by v.
//
// See the documentation for Unmarshal for details about
// the conversion of JSON into a Go value.
func (dec *Decoder) Decode(v interface{}) error {
if dec.err != nil {
return dec.err
}
if err := dec.tokenPrepareForDecode(); err != nil {
return err
}
if !dec.tokenValueAllowed() {
return &SyntaxError{msg: "not at beginning of value"}
}
// Read whole value into buffer.
n, err := dec.readValue()
if err != nil {
return err
}
dec.d.init(dec.buf[dec.scanp : dec.scanp+n])
dec.scanp += n
// Don't save err from unmarshal into dec.err:
// the connection is still usable since we read a complete JSON
// object from it before the error happened.
err = dec.d.unmarshal(v)
// fixup token streaming state
dec.tokenValueEnd()
return err
}
// Buffered returns a reader of the data remaining in the Decoder's
// buffer. The reader is valid until the next call to Decode.
func (dec *Decoder) Buffered() io.Reader {
return bytes.NewReader(dec.buf[dec.scanp:])
}
// readValue reads a JSON value into dec.buf.
// It returns the length of the encoding.
func (dec *Decoder) readValue() (int, error) {
dec.scan.reset()
scanp := dec.scanp
var err error
Input:
for {
// Look in the buffer for a new value.
for i, c := range dec.buf[scanp:] {
dec.scan.bytes++
v := dec.scan.step(&dec.scan, c)
if v == scanEnd {
scanp += i
break Input
}
// scanEnd is delayed one byte.
// We might block trying to get that byte from src,
// so instead invent a space byte.
if (v == scanEndObject || v == scanEndArray) && dec.scan.step(&dec.scan, ' ') == scanEnd {
scanp += i + 1
break Input
}
if v == scanError {
dec.err = dec.scan.err
return 0, dec.scan.err
}
}
scanp = len(dec.buf)
// Did the last read have an error?
// Delayed until now to allow buffer scan.
if err != nil {
if err == io.EOF {
if dec.scan.step(&dec.scan, ' ') == scanEnd {
break Input
}
if nonSpace(dec.buf) {
err = io.ErrUnexpectedEOF
}
}
dec.err = err
return 0, err
}
n := scanp - dec.scanp
err = dec.refill()
scanp = dec.scanp + n
}
return scanp - dec.scanp, nil
}
func (dec *Decoder) refill() error {
// Make room to read more into the buffer.
// First slide down data already consumed.
if dec.scanp > 0 {
n := copy(dec.buf, dec.buf[dec.scanp:])
dec.buf = dec.buf[:n]
dec.scanp = 0
}
// Grow buffer if not large enough.
const minRead = 512
if cap(dec.buf)-len(dec.buf) < minRead {
newBuf := make([]byte, len(dec.buf), 2*cap(dec.buf)+minRead)
copy(newBuf, dec.buf)
dec.buf = newBuf
}
// Read. Delay error for next iteration (after scan).
n, err := dec.r.Read(dec.buf[len(dec.buf):cap(dec.buf)])
dec.buf = dec.buf[0 : len(dec.buf)+n]
return err
}
func nonSpace(b []byte) bool {
for _, c := range b {
if !isSpace(c) {
return true
}
}
return false
}
// An Encoder writes JSON objects to an output stream.
type Encoder struct {
w io.Writer
err error
}
// NewEncoder returns a new encoder that writes to w.
func NewEncoder(w io.Writer) *Encoder {
return &Encoder{w: w}
}
// Encode writes the JSON encoding of v to the stream,
// followed by a newline character.
//
// See the documentation for Marshal for details about the
// conversion of Go values to JSON.
func (enc *Encoder) Encode(v interface{}) error {
if enc.err != nil {
return enc.err
}
e := newEncodeState()
err := e.marshal(v)
if err != nil {
return err
}
// Terminate each value with a newline.
// This makes the output look a little nicer
// when debugging, and some kind of space
// is required if the encoded value was a number,
// so that the reader knows there aren't more
// digits coming.
e.WriteByte('\n')
if _, err = enc.w.Write(e.Bytes()); err != nil {
enc.err = err
}
encodeStatePool.Put(e)
return err
}
// RawMessage is a raw encoded JSON object.
// It implements Marshaler and Unmarshaler and can
// be used to delay JSON decoding or precompute a JSON encoding.
type RawMessage []byte
// MarshalJSON returns *m as the JSON encoding of m.
func (m *RawMessage) MarshalJSON() ([]byte, error) {
return *m, nil
}
// UnmarshalJSON sets *m to a copy of data.
func (m *RawMessage) UnmarshalJSON(data []byte) error {
if m == nil {
return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
}
*m = append((*m)[0:0], data...)
return nil
}
var _ Marshaler = (*RawMessage)(nil)
var _ Unmarshaler = (*RawMessage)(nil)
// A Token holds a value of one of these types:
//
// Delim, for the four JSON delimiters [ ] { }
// bool, for JSON booleans
// float64, for JSON numbers
// Number, for JSON numbers
// string, for JSON string literals
// nil, for JSON null
//
type Token interface{}
const (
tokenTopValue = iota
tokenArrayStart
tokenArrayValue
tokenArrayComma
tokenObjectStart
tokenObjectKey
tokenObjectColon
tokenObjectValue
tokenObjectComma
)
// advance tokenstate from a separator state to a value state
func (dec *Decoder) tokenPrepareForDecode() error {
// Note: Not calling peek before switch, to avoid
// putting peek into the standard Decode path.
// peek is only called when using the Token API.
switch dec.tokenState {
case tokenArrayComma:
c, err := dec.peek()
if err != nil {
return err
}
if c != ',' {
return &SyntaxError{"expected comma after array element", 0}
}
dec.scanp++
dec.tokenState = tokenArrayValue
case tokenObjectColon:
c, err := dec.peek()
if err != nil {
return err
}
if c != ':' {
return &SyntaxError{"expected colon after object key", 0}
}
dec.scanp++
dec.tokenState = tokenObjectValue
}
return nil
}
func (dec *Decoder) tokenValueAllowed() bool {
switch dec.tokenState {
case tokenTopValue, tokenArrayStart, tokenArrayValue, tokenObjectValue:
return true
}
return false
}
func (dec *Decoder) tokenValueEnd() {
switch dec.tokenState {
case tokenArrayStart, tokenArrayValue:
dec.tokenState = tokenArrayComma
case tokenObjectValue:
dec.tokenState = tokenObjectComma
}
}
// A Delim is a JSON array or object delimiter, one of [ ] { or }.
type Delim rune
func (d Delim) String() string {
return string(d)
}
// Token returns the next JSON token in the input stream.
// At the end of the input stream, Token returns nil, io.EOF.
//
// Token guarantees that the delimiters [ ] { } it returns are
// properly nested and matched: if Token encounters an unexpected
// delimiter in the input, it will return an error.
//
// The input stream consists of basic JSON values—bool, string,
// number, and null—along with delimiters [ ] { } of type Delim
// to mark the start and end of arrays and objects.
// Commas and colons are elided.
func (dec *Decoder) Token() (Token, error) {
for {
c, err := dec.peek()
if err != nil {
return nil, err
}
switch c {
case '[':
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
dec.tokenState = tokenArrayStart
return Delim('['), nil
case ']':
if dec.tokenState != tokenArrayStart && dec.tokenState != tokenArrayComma {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
dec.tokenValueEnd()
return Delim(']'), nil
case '{':
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
dec.tokenState = tokenObjectStart
return Delim('{'), nil
case '}':
if dec.tokenState != tokenObjectStart && dec.tokenState != tokenObjectComma {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
dec.tokenValueEnd()
return Delim('}'), nil
case ':':
if dec.tokenState != tokenObjectColon {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = tokenObjectValue
continue
case ',':
if dec.tokenState == tokenArrayComma {
dec.scanp++
dec.tokenState = tokenArrayValue
continue
}
if dec.tokenState == tokenObjectComma {
dec.scanp++
dec.tokenState = tokenObjectKey
continue
}
return dec.tokenError(c)
case '"':
if dec.tokenState == tokenObjectStart || dec.tokenState == tokenObjectKey {
var x string
old := dec.tokenState
dec.tokenState = tokenTopValue
err := dec.Decode(&x)
dec.tokenState = old
if err != nil {
clearOffset(err)
return nil, err
}
dec.tokenState = tokenObjectColon
return x, nil
}
fallthrough
default:
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
var x interface{}
if err := dec.Decode(&x); err != nil {
clearOffset(err)
return nil, err
}
return x, nil
}
}
}
func clearOffset(err error) {
if s, ok := err.(*SyntaxError); ok {
s.Offset = 0
}
}
func (dec *Decoder) tokenError(c byte) (Token, error) {
var context string
switch dec.tokenState {
case tokenTopValue:
context = " looking for beginning of value"
case tokenArrayStart, tokenArrayValue, tokenObjectValue:
context = " looking for beginning of value"
case tokenArrayComma:
context = " after array element"
case tokenObjectKey:
context = " looking for beginning of object key string"
case tokenObjectColon:
context = " after object key"
case tokenObjectComma:
context = " after object key:value pair"
}
return nil, &SyntaxError{"invalid character " + quoteChar(c) + " " + context, 0}
}
// More reports whether there is another element in the
// current array or object being parsed.
func (dec *Decoder) More() bool {
c, err := dec.peek()
return err == nil && c != ']' && c != '}'
}
func (dec *Decoder) peek() (byte, error) {
var err error
for {
for i := dec.scanp; i < len(dec.buf); i++ {
c := dec.buf[i]
if isSpace(c) {
continue
}
dec.scanp = i
return c, nil
}
// buffer has been scanned, now report any error
if err != nil {
return 0, err
}
err = dec.refill()
}
}
/*
TODO
// EncodeToken writes the given JSON token to the stream.
// It returns an error if the delimiters [ ] { } are not properly used.
//
// EncodeToken does not call Flush, because usually it is part of
// a larger operation such as Encode, and those will call Flush when finished.
// Callers that create an Encoder and then invoke EncodeToken directly,
// without using Encode, need to call Flush when finished to ensure that
// the JSON is written to the underlying writer.
func (e *Encoder) EncodeToken(t Token) error {
...
}
*/

44
vendor/gopkg.in/square/go-jose.v2/json/tags.go generated vendored Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package json
import (
"strings"
)
// tagOptions is the string following a comma in a struct field's "json"
// tag, or the empty string. It does not include the leading comma.
type tagOptions string
// parseTag splits a struct field's json tag into its name and
// comma-separated options.
func parseTag(tag string) (string, tagOptions) {
if idx := strings.Index(tag, ","); idx != -1 {
return tag[:idx], tagOptions(tag[idx+1:])
}
return tag, tagOptions("")
}
// Contains reports whether a comma-separated list of options
// contains a particular substr flag. substr must be surrounded by a
// string boundary or commas.
func (o tagOptions) Contains(optionName string) bool {
if len(o) == 0 {
return false
}
s := string(o)
for s != "" {
var next string
i := strings.Index(s, ",")
if i >= 0 {
s, next = s[:i], s[i+1:]
}
if s == optionName {
return true
}
s = next
}
return false
}

294
vendor/gopkg.in/square/go-jose.v2/jwe.go generated vendored Normal file
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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"encoding/base64"
"fmt"
"strings"
"gopkg.in/square/go-jose.v2/json"
)
// rawJSONWebEncryption represents a raw JWE JSON object. Used for parsing/serializing.
type rawJSONWebEncryption struct {
Protected *byteBuffer `json:"protected,omitempty"`
Unprotected *rawHeader `json:"unprotected,omitempty"`
Header *rawHeader `json:"header,omitempty"`
Recipients []rawRecipientInfo `json:"recipients,omitempty"`
Aad *byteBuffer `json:"aad,omitempty"`
EncryptedKey *byteBuffer `json:"encrypted_key,omitempty"`
Iv *byteBuffer `json:"iv,omitempty"`
Ciphertext *byteBuffer `json:"ciphertext,omitempty"`
Tag *byteBuffer `json:"tag,omitempty"`
}
// rawRecipientInfo represents a raw JWE Per-Recipient header JSON object. Used for parsing/serializing.
type rawRecipientInfo struct {
Header *rawHeader `json:"header,omitempty"`
EncryptedKey string `json:"encrypted_key,omitempty"`
}
// JSONWebEncryption represents an encrypted JWE object after parsing.
type JSONWebEncryption struct {
Header Header
protected, unprotected *rawHeader
recipients []recipientInfo
aad, iv, ciphertext, tag []byte
original *rawJSONWebEncryption
}
// recipientInfo represents a raw JWE Per-Recipient header JSON object after parsing.
type recipientInfo struct {
header *rawHeader
encryptedKey []byte
}
// GetAuthData retrieves the (optional) authenticated data attached to the object.
func (obj JSONWebEncryption) GetAuthData() []byte {
if obj.aad != nil {
out := make([]byte, len(obj.aad))
copy(out, obj.aad)
return out
}
return nil
}
// Get the merged header values
func (obj JSONWebEncryption) mergedHeaders(recipient *recipientInfo) rawHeader {
out := rawHeader{}
out.merge(obj.protected)
out.merge(obj.unprotected)
if recipient != nil {
out.merge(recipient.header)
}
return out
}
// Get the additional authenticated data from a JWE object.
func (obj JSONWebEncryption) computeAuthData() []byte {
var protected string
if obj.original != nil && obj.original.Protected != nil {
protected = obj.original.Protected.base64()
} else if obj.protected != nil {
protected = base64.RawURLEncoding.EncodeToString(mustSerializeJSON((obj.protected)))
} else {
protected = ""
}
output := []byte(protected)
if obj.aad != nil {
output = append(output, '.')
output = append(output, []byte(base64.RawURLEncoding.EncodeToString(obj.aad))...)
}
return output
}
// ParseEncrypted parses an encrypted message in compact or full serialization format.
func ParseEncrypted(input string) (*JSONWebEncryption, error) {
input = stripWhitespace(input)
if strings.HasPrefix(input, "{") {
return parseEncryptedFull(input)
}
return parseEncryptedCompact(input)
}
// parseEncryptedFull parses a message in compact format.
func parseEncryptedFull(input string) (*JSONWebEncryption, error) {
var parsed rawJSONWebEncryption
err := json.Unmarshal([]byte(input), &parsed)
if err != nil {
return nil, err
}
return parsed.sanitized()
}
// sanitized produces a cleaned-up JWE object from the raw JSON.
func (parsed *rawJSONWebEncryption) sanitized() (*JSONWebEncryption, error) {
obj := &JSONWebEncryption{
original: parsed,
unprotected: parsed.Unprotected,
}
// Check that there is not a nonce in the unprotected headers
if parsed.Unprotected != nil {
if nonce := parsed.Unprotected.getNonce(); nonce != "" {
return nil, ErrUnprotectedNonce
}
}
if parsed.Header != nil {
if nonce := parsed.Header.getNonce(); nonce != "" {
return nil, ErrUnprotectedNonce
}
}
if parsed.Protected != nil && len(parsed.Protected.bytes()) > 0 {
err := json.Unmarshal(parsed.Protected.bytes(), &obj.protected)
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid protected header: %s, %s", err, parsed.Protected.base64())
}
}
// Note: this must be called _after_ we parse the protected header,
// otherwise fields from the protected header will not get picked up.
var err error
mergedHeaders := obj.mergedHeaders(nil)
obj.Header, err = mergedHeaders.sanitized()
if err != nil {
return nil, fmt.Errorf("square/go-jose: cannot sanitize merged headers: %v (%v)", err, mergedHeaders)
}
if len(parsed.Recipients) == 0 {
obj.recipients = []recipientInfo{
{
header: parsed.Header,
encryptedKey: parsed.EncryptedKey.bytes(),
},
}
} else {
obj.recipients = make([]recipientInfo, len(parsed.Recipients))
for r := range parsed.Recipients {
encryptedKey, err := base64.RawURLEncoding.DecodeString(parsed.Recipients[r].EncryptedKey)
if err != nil {
return nil, err
}
// Check that there is not a nonce in the unprotected header
if parsed.Recipients[r].Header != nil && parsed.Recipients[r].Header.getNonce() != "" {
return nil, ErrUnprotectedNonce
}
obj.recipients[r].header = parsed.Recipients[r].Header
obj.recipients[r].encryptedKey = encryptedKey
}
}
for _, recipient := range obj.recipients {
headers := obj.mergedHeaders(&recipient)
if headers.getAlgorithm() == "" || headers.getEncryption() == "" {
return nil, fmt.Errorf("square/go-jose: message is missing alg/enc headers")
}
}
obj.iv = parsed.Iv.bytes()
obj.ciphertext = parsed.Ciphertext.bytes()
obj.tag = parsed.Tag.bytes()
obj.aad = parsed.Aad.bytes()
return obj, nil
}
// parseEncryptedCompact parses a message in compact format.
func parseEncryptedCompact(input string) (*JSONWebEncryption, error) {
parts := strings.Split(input, ".")
if len(parts) != 5 {
return nil, fmt.Errorf("square/go-jose: compact JWE format must have five parts")
}
rawProtected, err := base64.RawURLEncoding.DecodeString(parts[0])
if err != nil {
return nil, err
}
encryptedKey, err := base64.RawURLEncoding.DecodeString(parts[1])
if err != nil {
return nil, err
}
iv, err := base64.RawURLEncoding.DecodeString(parts[2])
if err != nil {
return nil, err
}
ciphertext, err := base64.RawURLEncoding.DecodeString(parts[3])
if err != nil {
return nil, err
}
tag, err := base64.RawURLEncoding.DecodeString(parts[4])
if err != nil {
return nil, err
}
raw := &rawJSONWebEncryption{
Protected: newBuffer(rawProtected),
EncryptedKey: newBuffer(encryptedKey),
Iv: newBuffer(iv),
Ciphertext: newBuffer(ciphertext),
Tag: newBuffer(tag),
}
return raw.sanitized()
}
// CompactSerialize serializes an object using the compact serialization format.
func (obj JSONWebEncryption) CompactSerialize() (string, error) {
if len(obj.recipients) != 1 || obj.unprotected != nil ||
obj.protected == nil || obj.recipients[0].header != nil {
return "", ErrNotSupported
}
serializedProtected := mustSerializeJSON(obj.protected)
return fmt.Sprintf(
"%s.%s.%s.%s.%s",
base64.RawURLEncoding.EncodeToString(serializedProtected),
base64.RawURLEncoding.EncodeToString(obj.recipients[0].encryptedKey),
base64.RawURLEncoding.EncodeToString(obj.iv),
base64.RawURLEncoding.EncodeToString(obj.ciphertext),
base64.RawURLEncoding.EncodeToString(obj.tag)), nil
}
// FullSerialize serializes an object using the full JSON serialization format.
func (obj JSONWebEncryption) FullSerialize() string {
raw := rawJSONWebEncryption{
Unprotected: obj.unprotected,
Iv: newBuffer(obj.iv),
Ciphertext: newBuffer(obj.ciphertext),
EncryptedKey: newBuffer(obj.recipients[0].encryptedKey),
Tag: newBuffer(obj.tag),
Aad: newBuffer(obj.aad),
Recipients: []rawRecipientInfo{},
}
if len(obj.recipients) > 1 {
for _, recipient := range obj.recipients {
info := rawRecipientInfo{
Header: recipient.header,
EncryptedKey: base64.RawURLEncoding.EncodeToString(recipient.encryptedKey),
}
raw.Recipients = append(raw.Recipients, info)
}
} else {
// Use flattened serialization
raw.Header = obj.recipients[0].header
raw.EncryptedKey = newBuffer(obj.recipients[0].encryptedKey)
}
if obj.protected != nil {
raw.Protected = newBuffer(mustSerializeJSON(obj.protected))
}
return string(mustSerializeJSON(raw))
}

608
vendor/gopkg.in/square/go-jose.v2/jwk.go generated vendored Normal file
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@ -0,0 +1,608 @@
/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rsa"
"crypto/x509"
"encoding/base64"
"errors"
"fmt"
"math/big"
"reflect"
"strings"
"golang.org/x/crypto/ed25519"
"gopkg.in/square/go-jose.v2/json"
)
// rawJSONWebKey represents a public or private key in JWK format, used for parsing/serializing.
type rawJSONWebKey struct {
Use string `json:"use,omitempty"`
Kty string `json:"kty,omitempty"`
Kid string `json:"kid,omitempty"`
Crv string `json:"crv,omitempty"`
Alg string `json:"alg,omitempty"`
K *byteBuffer `json:"k,omitempty"`
X *byteBuffer `json:"x,omitempty"`
Y *byteBuffer `json:"y,omitempty"`
N *byteBuffer `json:"n,omitempty"`
E *byteBuffer `json:"e,omitempty"`
// -- Following fields are only used for private keys --
// RSA uses D, P and Q, while ECDSA uses only D. Fields Dp, Dq, and Qi are
// completely optional. Therefore for RSA/ECDSA, D != nil is a contract that
// we have a private key whereas D == nil means we have only a public key.
D *byteBuffer `json:"d,omitempty"`
P *byteBuffer `json:"p,omitempty"`
Q *byteBuffer `json:"q,omitempty"`
Dp *byteBuffer `json:"dp,omitempty"`
Dq *byteBuffer `json:"dq,omitempty"`
Qi *byteBuffer `json:"qi,omitempty"`
// Certificates
X5c []string `json:"x5c,omitempty"`
}
// JSONWebKey represents a public or private key in JWK format.
type JSONWebKey struct {
Key interface{}
Certificates []*x509.Certificate
KeyID string
Algorithm string
Use string
}
// MarshalJSON serializes the given key to its JSON representation.
func (k JSONWebKey) MarshalJSON() ([]byte, error) {
var raw *rawJSONWebKey
var err error
switch key := k.Key.(type) {
case ed25519.PublicKey:
raw = fromEdPublicKey(key)
case *ecdsa.PublicKey:
raw, err = fromEcPublicKey(key)
case *rsa.PublicKey:
raw = fromRsaPublicKey(key)
case ed25519.PrivateKey:
raw, err = fromEdPrivateKey(key)
case *ecdsa.PrivateKey:
raw, err = fromEcPrivateKey(key)
case *rsa.PrivateKey:
raw, err = fromRsaPrivateKey(key)
case []byte:
raw, err = fromSymmetricKey(key)
default:
return nil, fmt.Errorf("square/go-jose: unknown key type '%s'", reflect.TypeOf(key))
}
if err != nil {
return nil, err
}
raw.Kid = k.KeyID
raw.Alg = k.Algorithm
raw.Use = k.Use
for _, cert := range k.Certificates {
raw.X5c = append(raw.X5c, base64.StdEncoding.EncodeToString(cert.Raw))
}
return json.Marshal(raw)
}
// UnmarshalJSON reads a key from its JSON representation.
func (k *JSONWebKey) UnmarshalJSON(data []byte) (err error) {
var raw rawJSONWebKey
err = json.Unmarshal(data, &raw)
if err != nil {
return err
}
var key interface{}
switch raw.Kty {
case "EC":
if raw.D != nil {
key, err = raw.ecPrivateKey()
} else {
key, err = raw.ecPublicKey()
}
case "RSA":
if raw.D != nil {
key, err = raw.rsaPrivateKey()
} else {
key, err = raw.rsaPublicKey()
}
case "oct":
key, err = raw.symmetricKey()
case "OKP":
if raw.Crv == "Ed25519" && raw.X != nil {
if raw.D != nil {
key, err = raw.edPrivateKey()
} else {
key, err = raw.edPublicKey()
}
} else {
err = fmt.Errorf("square/go-jose: unknown curve %s'", raw.Crv)
}
default:
err = fmt.Errorf("square/go-jose: unknown json web key type '%s'", raw.Kty)
}
if err == nil {
*k = JSONWebKey{Key: key, KeyID: raw.Kid, Algorithm: raw.Alg, Use: raw.Use}
k.Certificates, err = parseCertificateChain(raw.X5c)
if err != nil {
return fmt.Errorf("failed to unmarshal x5c field: %s", err)
}
}
return
}
// JSONWebKeySet represents a JWK Set object.
type JSONWebKeySet struct {
Keys []JSONWebKey `json:"keys"`
}
// Key convenience method returns keys by key ID. Specification states
// that a JWK Set "SHOULD" use distinct key IDs, but allows for some
// cases where they are not distinct. Hence method returns a slice
// of JSONWebKeys.
func (s *JSONWebKeySet) Key(kid string) []JSONWebKey {
var keys []JSONWebKey
for _, key := range s.Keys {
if key.KeyID == kid {
keys = append(keys, key)
}
}
return keys
}
const rsaThumbprintTemplate = `{"e":"%s","kty":"RSA","n":"%s"}`
const ecThumbprintTemplate = `{"crv":"%s","kty":"EC","x":"%s","y":"%s"}`
const edThumbprintTemplate = `{"crv":"%s","kty":"OKP",x":"%s"}`
func ecThumbprintInput(curve elliptic.Curve, x, y *big.Int) (string, error) {
coordLength := curveSize(curve)
crv, err := curveName(curve)
if err != nil {
return "", err
}
if len(x.Bytes()) > coordLength || len(y.Bytes()) > coordLength {
return "", errors.New("square/go-jose: invalid elliptic key (too large)")
}
return fmt.Sprintf(ecThumbprintTemplate, crv,
newFixedSizeBuffer(x.Bytes(), coordLength).base64(),
newFixedSizeBuffer(y.Bytes(), coordLength).base64()), nil
}
func rsaThumbprintInput(n *big.Int, e int) (string, error) {
return fmt.Sprintf(rsaThumbprintTemplate,
newBufferFromInt(uint64(e)).base64(),
newBuffer(n.Bytes()).base64()), nil
}
func edThumbprintInput(ed ed25519.PublicKey) (string, error) {
crv := "Ed25519"
if len(ed) > 32 {
return "", errors.New("square/go-jose: invalid elliptic key (too large)")
}
return fmt.Sprintf(edThumbprintTemplate, crv,
newFixedSizeBuffer(ed, 32).base64()), nil
}
// Thumbprint computes the JWK Thumbprint of a key using the
// indicated hash algorithm.
func (k *JSONWebKey) Thumbprint(hash crypto.Hash) ([]byte, error) {
var input string
var err error
switch key := k.Key.(type) {
case ed25519.PublicKey:
input, err = edThumbprintInput(key)
case *ecdsa.PublicKey:
input, err = ecThumbprintInput(key.Curve, key.X, key.Y)
case *ecdsa.PrivateKey:
input, err = ecThumbprintInput(key.Curve, key.X, key.Y)
case *rsa.PublicKey:
input, err = rsaThumbprintInput(key.N, key.E)
case *rsa.PrivateKey:
input, err = rsaThumbprintInput(key.N, key.E)
case ed25519.PrivateKey:
input, err = edThumbprintInput(ed25519.PublicKey(key[32:]))
default:
return nil, fmt.Errorf("square/go-jose: unknown key type '%s'", reflect.TypeOf(key))
}
if err != nil {
return nil, err
}
h := hash.New()
h.Write([]byte(input))
return h.Sum(nil), nil
}
// IsPublic returns true if the JWK represents a public key (not symmetric, not private).
func (k *JSONWebKey) IsPublic() bool {
switch k.Key.(type) {
case *ecdsa.PublicKey, *rsa.PublicKey, ed25519.PublicKey:
return true
default:
return false
}
}
// Public creates JSONWebKey with corresponding publik key if JWK represents asymmetric private key.
func (k *JSONWebKey) Public() JSONWebKey {
if k.IsPublic() {
return *k
}
ret := *k
switch key := k.Key.(type) {
case *ecdsa.PrivateKey:
ret.Key = key.Public()
case *rsa.PrivateKey:
ret.Key = key.Public()
case ed25519.PrivateKey:
ret.Key = key.Public()
default:
return JSONWebKey{} // returning invalid key
}
return ret
}
// Valid checks that the key contains the expected parameters.
func (k *JSONWebKey) Valid() bool {
if k.Key == nil {
return false
}
switch key := k.Key.(type) {
case *ecdsa.PublicKey:
if key.Curve == nil || key.X == nil || key.Y == nil {
return false
}
case *ecdsa.PrivateKey:
if key.Curve == nil || key.X == nil || key.Y == nil || key.D == nil {
return false
}
case *rsa.PublicKey:
if key.N == nil || key.E == 0 {
return false
}
case *rsa.PrivateKey:
if key.N == nil || key.E == 0 || key.D == nil || len(key.Primes) < 2 {
return false
}
case ed25519.PublicKey:
if len(key) != 32 {
return false
}
case ed25519.PrivateKey:
if len(key) != 64 {
return false
}
default:
return false
}
return true
}
func (key rawJSONWebKey) rsaPublicKey() (*rsa.PublicKey, error) {
if key.N == nil || key.E == nil {
return nil, fmt.Errorf("square/go-jose: invalid RSA key, missing n/e values")
}
return &rsa.PublicKey{
N: key.N.bigInt(),
E: key.E.toInt(),
}, nil
}
func fromEdPublicKey(pub ed25519.PublicKey) *rawJSONWebKey {
return &rawJSONWebKey{
Kty: "OKP",
Crv: "Ed25519",
X: newBuffer(pub),
}
}
func fromRsaPublicKey(pub *rsa.PublicKey) *rawJSONWebKey {
return &rawJSONWebKey{
Kty: "RSA",
N: newBuffer(pub.N.Bytes()),
E: newBufferFromInt(uint64(pub.E)),
}
}
func (key rawJSONWebKey) ecPublicKey() (*ecdsa.PublicKey, error) {
var curve elliptic.Curve
switch key.Crv {
case "P-256":
curve = elliptic.P256()
case "P-384":
curve = elliptic.P384()
case "P-521":
curve = elliptic.P521()
default:
return nil, fmt.Errorf("square/go-jose: unsupported elliptic curve '%s'", key.Crv)
}
if key.X == nil || key.Y == nil {
return nil, errors.New("square/go-jose: invalid EC key, missing x/y values")
}
// The length of this octet string MUST be the full size of a coordinate for
// the curve specified in the "crv" parameter.
// https://tools.ietf.org/html/rfc7518#section-6.2.1.2
if curveSize(curve) != len(key.X.data) {
return nil, fmt.Errorf("square/go-jose: invalid EC public key, wrong length for x")
}
if curveSize(curve) != len(key.Y.data) {
return nil, fmt.Errorf("square/go-jose: invalid EC public key, wrong length for y")
}
x := key.X.bigInt()
y := key.Y.bigInt()
if !curve.IsOnCurve(x, y) {
return nil, errors.New("square/go-jose: invalid EC key, X/Y are not on declared curve")
}
return &ecdsa.PublicKey{
Curve: curve,
X: x,
Y: y,
}, nil
}
func fromEcPublicKey(pub *ecdsa.PublicKey) (*rawJSONWebKey, error) {
if pub == nil || pub.X == nil || pub.Y == nil {
return nil, fmt.Errorf("square/go-jose: invalid EC key (nil, or X/Y missing)")
}
name, err := curveName(pub.Curve)
if err != nil {
return nil, err
}
size := curveSize(pub.Curve)
xBytes := pub.X.Bytes()
yBytes := pub.Y.Bytes()
if len(xBytes) > size || len(yBytes) > size {
return nil, fmt.Errorf("square/go-jose: invalid EC key (X/Y too large)")
}
key := &rawJSONWebKey{
Kty: "EC",
Crv: name,
X: newFixedSizeBuffer(xBytes, size),
Y: newFixedSizeBuffer(yBytes, size),
}
return key, nil
}
func (key rawJSONWebKey) edPrivateKey() (ed25519.PrivateKey, error) {
var missing []string
switch {
case key.D == nil:
missing = append(missing, "D")
case key.X == nil:
missing = append(missing, "X")
}
if len(missing) > 0 {
return nil, fmt.Errorf("square/go-jose: invalid Ed25519 private key, missing %s value(s)", strings.Join(missing, ", "))
}
privateKey := make([]byte, ed25519.PrivateKeySize)
copy(privateKey[0:32], key.D.bytes())
copy(privateKey[32:], key.X.bytes())
rv := ed25519.PrivateKey(privateKey)
return rv, nil
}
func (key rawJSONWebKey) edPublicKey() (ed25519.PublicKey, error) {
if key.X == nil {
return nil, fmt.Errorf("square/go-jose: invalid Ed key, missing x value")
}
publicKey := make([]byte, ed25519.PublicKeySize)
copy(publicKey[0:32], key.X.bytes())
rv := ed25519.PublicKey(publicKey)
return rv, nil
}
func (key rawJSONWebKey) rsaPrivateKey() (*rsa.PrivateKey, error) {
var missing []string
switch {
case key.N == nil:
missing = append(missing, "N")
case key.E == nil:
missing = append(missing, "E")
case key.D == nil:
missing = append(missing, "D")
case key.P == nil:
missing = append(missing, "P")
case key.Q == nil:
missing = append(missing, "Q")
}
if len(missing) > 0 {
return nil, fmt.Errorf("square/go-jose: invalid RSA private key, missing %s value(s)", strings.Join(missing, ", "))
}
rv := &rsa.PrivateKey{
PublicKey: rsa.PublicKey{
N: key.N.bigInt(),
E: key.E.toInt(),
},
D: key.D.bigInt(),
Primes: []*big.Int{
key.P.bigInt(),
key.Q.bigInt(),
},
}
if key.Dp != nil {
rv.Precomputed.Dp = key.Dp.bigInt()
}
if key.Dq != nil {
rv.Precomputed.Dq = key.Dq.bigInt()
}
if key.Qi != nil {
rv.Precomputed.Qinv = key.Qi.bigInt()
}
err := rv.Validate()
return rv, err
}
func fromEdPrivateKey(ed ed25519.PrivateKey) (*rawJSONWebKey, error) {
raw := fromEdPublicKey(ed25519.PublicKey(ed[32:]))
raw.D = newBuffer(ed[0:32])
return raw, nil
}
func fromRsaPrivateKey(rsa *rsa.PrivateKey) (*rawJSONWebKey, error) {
if len(rsa.Primes) != 2 {
return nil, ErrUnsupportedKeyType
}
raw := fromRsaPublicKey(&rsa.PublicKey)
raw.D = newBuffer(rsa.D.Bytes())
raw.P = newBuffer(rsa.Primes[0].Bytes())
raw.Q = newBuffer(rsa.Primes[1].Bytes())
if rsa.Precomputed.Dp != nil {
raw.Dp = newBuffer(rsa.Precomputed.Dp.Bytes())
}
if rsa.Precomputed.Dq != nil {
raw.Dq = newBuffer(rsa.Precomputed.Dq.Bytes())
}
if rsa.Precomputed.Qinv != nil {
raw.Qi = newBuffer(rsa.Precomputed.Qinv.Bytes())
}
return raw, nil
}
func (key rawJSONWebKey) ecPrivateKey() (*ecdsa.PrivateKey, error) {
var curve elliptic.Curve
switch key.Crv {
case "P-256":
curve = elliptic.P256()
case "P-384":
curve = elliptic.P384()
case "P-521":
curve = elliptic.P521()
default:
return nil, fmt.Errorf("square/go-jose: unsupported elliptic curve '%s'", key.Crv)
}
if key.X == nil || key.Y == nil || key.D == nil {
return nil, fmt.Errorf("square/go-jose: invalid EC private key, missing x/y/d values")
}
// The length of this octet string MUST be the full size of a coordinate for
// the curve specified in the "crv" parameter.
// https://tools.ietf.org/html/rfc7518#section-6.2.1.2
if curveSize(curve) != len(key.X.data) {
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for x")
}
if curveSize(curve) != len(key.Y.data) {
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for y")
}
// https://tools.ietf.org/html/rfc7518#section-6.2.2.1
if dSize(curve) != len(key.D.data) {
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for d")
}
x := key.X.bigInt()
y := key.Y.bigInt()
if !curve.IsOnCurve(x, y) {
return nil, errors.New("square/go-jose: invalid EC key, X/Y are not on declared curve")
}
return &ecdsa.PrivateKey{
PublicKey: ecdsa.PublicKey{
Curve: curve,
X: x,
Y: y,
},
D: key.D.bigInt(),
}, nil
}
func fromEcPrivateKey(ec *ecdsa.PrivateKey) (*rawJSONWebKey, error) {
raw, err := fromEcPublicKey(&ec.PublicKey)
if err != nil {
return nil, err
}
if ec.D == nil {
return nil, fmt.Errorf("square/go-jose: invalid EC private key")
}
raw.D = newFixedSizeBuffer(ec.D.Bytes(), dSize(ec.PublicKey.Curve))
return raw, nil
}
// dSize returns the size in octets for the "d" member of an elliptic curve
// private key.
// The length of this octet string MUST be ceiling(log-base-2(n)/8)
// octets (where n is the order of the curve).
// https://tools.ietf.org/html/rfc7518#section-6.2.2.1
func dSize(curve elliptic.Curve) int {
order := curve.Params().P
bitLen := order.BitLen()
size := bitLen / 8
if bitLen%8 != 0 {
size = size + 1
}
return size
}
func fromSymmetricKey(key []byte) (*rawJSONWebKey, error) {
return &rawJSONWebKey{
Kty: "oct",
K: newBuffer(key),
}, nil
}
func (key rawJSONWebKey) symmetricKey() ([]byte, error) {
if key.K == nil {
return nil, fmt.Errorf("square/go-jose: invalid OCT (symmetric) key, missing k value")
}
return key.K.bytes(), nil
}

366
vendor/gopkg.in/square/go-jose.v2/jws.go generated vendored Normal file
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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"bytes"
"encoding/base64"
"errors"
"fmt"
"strings"
"gopkg.in/square/go-jose.v2/json"
)
// rawJSONWebSignature represents a raw JWS JSON object. Used for parsing/serializing.
type rawJSONWebSignature struct {
Payload *byteBuffer `json:"payload,omitempty"`
Signatures []rawSignatureInfo `json:"signatures,omitempty"`
Protected *byteBuffer `json:"protected,omitempty"`
Header *rawHeader `json:"header,omitempty"`
Signature *byteBuffer `json:"signature,omitempty"`
}
// rawSignatureInfo represents a single JWS signature over the JWS payload and protected header.
type rawSignatureInfo struct {
Protected *byteBuffer `json:"protected,omitempty"`
Header *rawHeader `json:"header,omitempty"`
Signature *byteBuffer `json:"signature,omitempty"`
}
// JSONWebSignature represents a signed JWS object after parsing.
type JSONWebSignature struct {
payload []byte
// Signatures attached to this object (may be more than one for multi-sig).
// Be careful about accessing these directly, prefer to use Verify() or
// VerifyMulti() to ensure that the data you're getting is verified.
Signatures []Signature
}
// Signature represents a single signature over the JWS payload and protected header.
type Signature struct {
// Merged header fields. Contains both protected and unprotected header
// values. Prefer using Protected and Unprotected fields instead of this.
// Values in this header may or may not have been signed and in general
// should not be trusted.
Header Header
// Protected header. Values in this header were signed and
// will be verified as part of the signature verification process.
Protected Header
// Unprotected header. Values in this header were not signed
// and in general should not be trusted.
Unprotected Header
// The actual signature value
Signature []byte
protected *rawHeader
header *rawHeader
original *rawSignatureInfo
}
// ParseSigned parses a signed message in compact or full serialization format.
func ParseSigned(signature string) (*JSONWebSignature, error) {
signature = stripWhitespace(signature)
if strings.HasPrefix(signature, "{") {
return parseSignedFull(signature)
}
return parseSignedCompact(signature, nil)
}
// ParseDetached parses a signed message in compact serialization format with detached payload.
func ParseDetached(signature string, payload []byte) (*JSONWebSignature, error) {
if payload == nil {
return nil, errors.New("square/go-jose: nil payload")
}
return parseSignedCompact(stripWhitespace(signature), payload)
}
// Get a header value
func (sig Signature) mergedHeaders() rawHeader {
out := rawHeader{}
out.merge(sig.protected)
out.merge(sig.header)
return out
}
// Compute data to be signed
func (obj JSONWebSignature) computeAuthData(payload []byte, signature *Signature) ([]byte, error) {
var authData bytes.Buffer
protectedHeader := new(rawHeader)
if signature.original != nil && signature.original.Protected != nil {
if err := json.Unmarshal(signature.original.Protected.bytes(), protectedHeader); err != nil {
return nil, err
}
authData.WriteString(signature.original.Protected.base64())
} else if signature.protected != nil {
protectedHeader = signature.protected
authData.WriteString(base64.RawURLEncoding.EncodeToString(mustSerializeJSON(protectedHeader)))
}
needsBase64 := true
if protectedHeader != nil {
var err error
if needsBase64, err = protectedHeader.getB64(); err != nil {
needsBase64 = true
}
}
authData.WriteByte('.')
if needsBase64 {
authData.WriteString(base64.RawURLEncoding.EncodeToString(payload))
} else {
authData.Write(payload)
}
return authData.Bytes(), nil
}
// parseSignedFull parses a message in full format.
func parseSignedFull(input string) (*JSONWebSignature, error) {
var parsed rawJSONWebSignature
err := json.Unmarshal([]byte(input), &parsed)
if err != nil {
return nil, err
}
return parsed.sanitized()
}
// sanitized produces a cleaned-up JWS object from the raw JSON.
func (parsed *rawJSONWebSignature) sanitized() (*JSONWebSignature, error) {
if parsed.Payload == nil {
return nil, fmt.Errorf("square/go-jose: missing payload in JWS message")
}
obj := &JSONWebSignature{
payload: parsed.Payload.bytes(),
Signatures: make([]Signature, len(parsed.Signatures)),
}
if len(parsed.Signatures) == 0 {
// No signatures array, must be flattened serialization
signature := Signature{}
if parsed.Protected != nil && len(parsed.Protected.bytes()) > 0 {
signature.protected = &rawHeader{}
err := json.Unmarshal(parsed.Protected.bytes(), signature.protected)
if err != nil {
return nil, err
}
}
// Check that there is not a nonce in the unprotected header
if parsed.Header != nil && parsed.Header.getNonce() != "" {
return nil, ErrUnprotectedNonce
}
signature.header = parsed.Header
signature.Signature = parsed.Signature.bytes()
// Make a fake "original" rawSignatureInfo to store the unprocessed
// Protected header. This is necessary because the Protected header can
// contain arbitrary fields not registered as part of the spec. See
// https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-41#section-4
// If we unmarshal Protected into a rawHeader with its explicit list of fields,
// we cannot marshal losslessly. So we have to keep around the original bytes.
// This is used in computeAuthData, which will first attempt to use
// the original bytes of a protected header, and fall back on marshaling the
// header struct only if those bytes are not available.
signature.original = &rawSignatureInfo{
Protected: parsed.Protected,
Header: parsed.Header,
Signature: parsed.Signature,
}
var err error
signature.Header, err = signature.mergedHeaders().sanitized()
if err != nil {
return nil, err
}
if signature.header != nil {
signature.Unprotected, err = signature.header.sanitized()
if err != nil {
return nil, err
}
}
if signature.protected != nil {
signature.Protected, err = signature.protected.sanitized()
if err != nil {
return nil, err
}
}
// As per RFC 7515 Section 4.1.3, only public keys are allowed to be embedded.
jwk := signature.Header.JSONWebKey
if jwk != nil && (!jwk.Valid() || !jwk.IsPublic()) {
return nil, errors.New("square/go-jose: invalid embedded jwk, must be public key")
}
obj.Signatures = append(obj.Signatures, signature)
}
for i, sig := range parsed.Signatures {
if sig.Protected != nil && len(sig.Protected.bytes()) > 0 {
obj.Signatures[i].protected = &rawHeader{}
err := json.Unmarshal(sig.Protected.bytes(), obj.Signatures[i].protected)
if err != nil {
return nil, err
}
}
// Check that there is not a nonce in the unprotected header
if sig.Header != nil && sig.Header.getNonce() != "" {
return nil, ErrUnprotectedNonce
}
var err error
obj.Signatures[i].Header, err = obj.Signatures[i].mergedHeaders().sanitized()
if err != nil {
return nil, err
}
if obj.Signatures[i].header != nil {
obj.Signatures[i].Unprotected, err = obj.Signatures[i].header.sanitized()
if err != nil {
return nil, err
}
}
if obj.Signatures[i].protected != nil {
obj.Signatures[i].Protected, err = obj.Signatures[i].protected.sanitized()
if err != nil {
return nil, err
}
}
obj.Signatures[i].Signature = sig.Signature.bytes()
// As per RFC 7515 Section 4.1.3, only public keys are allowed to be embedded.
jwk := obj.Signatures[i].Header.JSONWebKey
if jwk != nil && (!jwk.Valid() || !jwk.IsPublic()) {
return nil, errors.New("square/go-jose: invalid embedded jwk, must be public key")
}
// Copy value of sig
original := sig
obj.Signatures[i].header = sig.Header
obj.Signatures[i].original = &original
}
return obj, nil
}
// parseSignedCompact parses a message in compact format.
func parseSignedCompact(input string, payload []byte) (*JSONWebSignature, error) {
parts := strings.Split(input, ".")
if len(parts) != 3 {
return nil, fmt.Errorf("square/go-jose: compact JWS format must have three parts")
}
if parts[1] != "" && payload != nil {
return nil, fmt.Errorf("square/go-jose: payload is not detached")
}
rawProtected, err := base64.RawURLEncoding.DecodeString(parts[0])
if err != nil {
return nil, err
}
if payload == nil {
payload, err = base64.RawURLEncoding.DecodeString(parts[1])
if err != nil {
return nil, err
}
}
signature, err := base64.RawURLEncoding.DecodeString(parts[2])
if err != nil {
return nil, err
}
raw := &rawJSONWebSignature{
Payload: newBuffer(payload),
Protected: newBuffer(rawProtected),
Signature: newBuffer(signature),
}
return raw.sanitized()
}
func (obj JSONWebSignature) compactSerialize(detached bool) (string, error) {
if len(obj.Signatures) != 1 || obj.Signatures[0].header != nil || obj.Signatures[0].protected == nil {
return "", ErrNotSupported
}
serializedProtected := base64.RawURLEncoding.EncodeToString(mustSerializeJSON(obj.Signatures[0].protected))
payload := ""
signature := base64.RawURLEncoding.EncodeToString(obj.Signatures[0].Signature)
if !detached {
payload = base64.RawURLEncoding.EncodeToString(obj.payload)
}
return fmt.Sprintf("%s.%s.%s", serializedProtected, payload, signature), nil
}
// CompactSerialize serializes an object using the compact serialization format.
func (obj JSONWebSignature) CompactSerialize() (string, error) {
return obj.compactSerialize(false)
}
// DetachedCompactSerialize serializes an object using the compact serialization format with detached payload.
func (obj JSONWebSignature) DetachedCompactSerialize() (string, error) {
return obj.compactSerialize(true)
}
// FullSerialize serializes an object using the full JSON serialization format.
func (obj JSONWebSignature) FullSerialize() string {
raw := rawJSONWebSignature{
Payload: newBuffer(obj.payload),
}
if len(obj.Signatures) == 1 {
if obj.Signatures[0].protected != nil {
serializedProtected := mustSerializeJSON(obj.Signatures[0].protected)
raw.Protected = newBuffer(serializedProtected)
}
raw.Header = obj.Signatures[0].header
raw.Signature = newBuffer(obj.Signatures[0].Signature)
} else {
raw.Signatures = make([]rawSignatureInfo, len(obj.Signatures))
for i, signature := range obj.Signatures {
raw.Signatures[i] = rawSignatureInfo{
Header: signature.header,
Signature: newBuffer(signature.Signature),
}
if signature.protected != nil {
raw.Signatures[i].Protected = newBuffer(mustSerializeJSON(signature.protected))
}
}
}
return string(mustSerializeJSON(raw))
}

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vendor/gopkg.in/square/go-jose.v2/opaque.go generated vendored Normal file
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/*-
* Copyright 2018 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
// OpaqueSigner is an interface that supports signing payloads with opaque
// private key(s). Private key operations preformed by implementors may, for
// example, occur in a hardware module. An OpaqueSigner may rotate signing keys
// transparently to the user of this interface.
type OpaqueSigner interface {
// Public returns the public key of the current signing key.
Public() *JSONWebKey
// Algs returns a list of supported signing algorithms.
Algs() []SignatureAlgorithm
// SignPayload signs a payload with the current signing key using the given
// algorithm.
SignPayload(payload []byte, alg SignatureAlgorithm) ([]byte, error)
}
type opaqueSigner struct {
signer OpaqueSigner
}
func newOpaqueSigner(alg SignatureAlgorithm, signer OpaqueSigner) (recipientSigInfo, error) {
var algSupported bool
for _, salg := range signer.Algs() {
if alg == salg {
algSupported = true
break
}
}
if !algSupported {
return recipientSigInfo{}, ErrUnsupportedAlgorithm
}
return recipientSigInfo{
sigAlg: alg,
publicKey: signer.Public,
signer: &opaqueSigner{
signer: signer,
},
}, nil
}
func (o *opaqueSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
out, err := o.signer.SignPayload(payload, alg)
if err != nil {
return Signature{}, err
}
return Signature{
Signature: out,
protected: &rawHeader{},
}, nil
}
// OpaqueVerifier is an interface that supports verifying payloads with opaque
// public key(s). An OpaqueSigner may rotate signing keys transparently to the
// user of this interface.
type OpaqueVerifier interface {
VerifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error
}
type opaqueVerifier struct {
verifier OpaqueVerifier
}
func (o *opaqueVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
return o.verifier.VerifyPayload(payload, signature, alg)
}
// OpaqueKeyEncrypter is an interface that supports encrypting keys with an opaque key.
type OpaqueKeyEncrypter interface {
// KeyID returns the kid
KeyID() string
// Algs returns a list of supported key encryption algorithms.
Algs() []KeyAlgorithm
// encryptKey encrypts the CEK using the given algorithm.
encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error)
}
type opaqueKeyEncrypter struct {
encrypter OpaqueKeyEncrypter
}
func newOpaqueKeyEncrypter(alg KeyAlgorithm, encrypter OpaqueKeyEncrypter) (recipientKeyInfo, error) {
var algSupported bool
for _, salg := range encrypter.Algs() {
if alg == salg {
algSupported = true
break
}
}
if !algSupported {
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
}
return recipientKeyInfo{
keyID: encrypter.KeyID(),
keyAlg: alg,
keyEncrypter: &opaqueKeyEncrypter{
encrypter: encrypter,
},
}, nil
}
func (oke *opaqueKeyEncrypter) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
return oke.encrypter.encryptKey(cek, alg)
}
//OpaqueKeyDecrypter is an interface that supports decrypting keys with an opaque key.
type OpaqueKeyDecrypter interface {
DecryptKey(encryptedKey []byte, header Header) ([]byte, error)
}
type opaqueKeyDecrypter struct {
decrypter OpaqueKeyDecrypter
}
func (okd *opaqueKeyDecrypter) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
mergedHeaders := rawHeader{}
mergedHeaders.merge(&headers)
mergedHeaders.merge(recipient.header)
header, err := mergedHeaders.sanitized()
if err != nil {
return nil, err
}
return okd.decrypter.DecryptKey(recipient.encryptedKey, header)
}

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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"crypto/elliptic"
"crypto/x509"
"encoding/base64"
"errors"
"fmt"
"gopkg.in/square/go-jose.v2/json"
)
// KeyAlgorithm represents a key management algorithm.
type KeyAlgorithm string
// SignatureAlgorithm represents a signature (or MAC) algorithm.
type SignatureAlgorithm string
// ContentEncryption represents a content encryption algorithm.
type ContentEncryption string
// CompressionAlgorithm represents an algorithm used for plaintext compression.
type CompressionAlgorithm string
// ContentType represents type of the contained data.
type ContentType string
var (
// ErrCryptoFailure represents an error in cryptographic primitive. This
// occurs when, for example, a message had an invalid authentication tag or
// could not be decrypted.
ErrCryptoFailure = errors.New("square/go-jose: error in cryptographic primitive")
// ErrUnsupportedAlgorithm indicates that a selected algorithm is not
// supported. This occurs when trying to instantiate an encrypter for an
// algorithm that is not yet implemented.
ErrUnsupportedAlgorithm = errors.New("square/go-jose: unknown/unsupported algorithm")
// ErrUnsupportedKeyType indicates that the given key type/format is not
// supported. This occurs when trying to instantiate an encrypter and passing
// it a key of an unrecognized type or with unsupported parameters, such as
// an RSA private key with more than two primes.
ErrUnsupportedKeyType = errors.New("square/go-jose: unsupported key type/format")
// ErrInvalidKeySize indicates that the given key is not the correct size
// for the selected algorithm. This can occur, for example, when trying to
// encrypt with AES-256 but passing only a 128-bit key as input.
ErrInvalidKeySize = errors.New("square/go-jose: invalid key size for algorithm")
// ErrNotSupported serialization of object is not supported. This occurs when
// trying to compact-serialize an object which can't be represented in
// compact form.
ErrNotSupported = errors.New("square/go-jose: compact serialization not supported for object")
// ErrUnprotectedNonce indicates that while parsing a JWS or JWE object, a
// nonce header parameter was included in an unprotected header object.
ErrUnprotectedNonce = errors.New("square/go-jose: Nonce parameter included in unprotected header")
)
// Key management algorithms
const (
ED25519 = KeyAlgorithm("ED25519")
RSA1_5 = KeyAlgorithm("RSA1_5") // RSA-PKCS1v1.5
RSA_OAEP = KeyAlgorithm("RSA-OAEP") // RSA-OAEP-SHA1
RSA_OAEP_256 = KeyAlgorithm("RSA-OAEP-256") // RSA-OAEP-SHA256
A128KW = KeyAlgorithm("A128KW") // AES key wrap (128)
A192KW = KeyAlgorithm("A192KW") // AES key wrap (192)
A256KW = KeyAlgorithm("A256KW") // AES key wrap (256)
DIRECT = KeyAlgorithm("dir") // Direct encryption
ECDH_ES = KeyAlgorithm("ECDH-ES") // ECDH-ES
ECDH_ES_A128KW = KeyAlgorithm("ECDH-ES+A128KW") // ECDH-ES + AES key wrap (128)
ECDH_ES_A192KW = KeyAlgorithm("ECDH-ES+A192KW") // ECDH-ES + AES key wrap (192)
ECDH_ES_A256KW = KeyAlgorithm("ECDH-ES+A256KW") // ECDH-ES + AES key wrap (256)
A128GCMKW = KeyAlgorithm("A128GCMKW") // AES-GCM key wrap (128)
A192GCMKW = KeyAlgorithm("A192GCMKW") // AES-GCM key wrap (192)
A256GCMKW = KeyAlgorithm("A256GCMKW") // AES-GCM key wrap (256)
PBES2_HS256_A128KW = KeyAlgorithm("PBES2-HS256+A128KW") // PBES2 + HMAC-SHA256 + AES key wrap (128)
PBES2_HS384_A192KW = KeyAlgorithm("PBES2-HS384+A192KW") // PBES2 + HMAC-SHA384 + AES key wrap (192)
PBES2_HS512_A256KW = KeyAlgorithm("PBES2-HS512+A256KW") // PBES2 + HMAC-SHA512 + AES key wrap (256)
)
// Signature algorithms
const (
EdDSA = SignatureAlgorithm("EdDSA")
HS256 = SignatureAlgorithm("HS256") // HMAC using SHA-256
HS384 = SignatureAlgorithm("HS384") // HMAC using SHA-384
HS512 = SignatureAlgorithm("HS512") // HMAC using SHA-512
RS256 = SignatureAlgorithm("RS256") // RSASSA-PKCS-v1.5 using SHA-256
RS384 = SignatureAlgorithm("RS384") // RSASSA-PKCS-v1.5 using SHA-384
RS512 = SignatureAlgorithm("RS512") // RSASSA-PKCS-v1.5 using SHA-512
ES256 = SignatureAlgorithm("ES256") // ECDSA using P-256 and SHA-256
ES384 = SignatureAlgorithm("ES384") // ECDSA using P-384 and SHA-384
ES512 = SignatureAlgorithm("ES512") // ECDSA using P-521 and SHA-512
PS256 = SignatureAlgorithm("PS256") // RSASSA-PSS using SHA256 and MGF1-SHA256
PS384 = SignatureAlgorithm("PS384") // RSASSA-PSS using SHA384 and MGF1-SHA384
PS512 = SignatureAlgorithm("PS512") // RSASSA-PSS using SHA512 and MGF1-SHA512
)
// Content encryption algorithms
const (
A128CBC_HS256 = ContentEncryption("A128CBC-HS256") // AES-CBC + HMAC-SHA256 (128)
A192CBC_HS384 = ContentEncryption("A192CBC-HS384") // AES-CBC + HMAC-SHA384 (192)
A256CBC_HS512 = ContentEncryption("A256CBC-HS512") // AES-CBC + HMAC-SHA512 (256)
A128GCM = ContentEncryption("A128GCM") // AES-GCM (128)
A192GCM = ContentEncryption("A192GCM") // AES-GCM (192)
A256GCM = ContentEncryption("A256GCM") // AES-GCM (256)
)
// Compression algorithms
const (
NONE = CompressionAlgorithm("") // No compression
DEFLATE = CompressionAlgorithm("DEF") // DEFLATE (RFC 1951)
)
// A key in the protected header of a JWS object. Use of the Header...
// constants is preferred to enhance type safety.
type HeaderKey string
const (
HeaderType HeaderKey = "typ" // string
HeaderContentType = "cty" // string
// These are set by go-jose and shouldn't need to be set by consumers of the
// library.
headerAlgorithm = "alg" // string
headerEncryption = "enc" // ContentEncryption
headerCompression = "zip" // CompressionAlgorithm
headerCritical = "crit" // []string
headerAPU = "apu" // *byteBuffer
headerAPV = "apv" // *byteBuffer
headerEPK = "epk" // *JSONWebKey
headerIV = "iv" // *byteBuffer
headerTag = "tag" // *byteBuffer
headerX5c = "x5c" // []*x509.Certificate
headerJWK = "jwk" // *JSONWebKey
headerKeyID = "kid" // string
headerNonce = "nonce" // string
headerB64 = "b64" // bool
headerP2C = "p2c" // *byteBuffer (int)
headerP2S = "p2s" // *byteBuffer ([]byte)
)
// supportedCritical is the set of supported extensions that are understood and processed.
var supportedCritical = map[string]bool{
headerB64: true,
}
// rawHeader represents the JOSE header for JWE/JWS objects (used for parsing).
//
// The decoding of the constituent items is deferred because we want to marshal
// some members into particular structs rather than generic maps, but at the
// same time we need to receive any extra fields unhandled by this library to
// pass through to consuming code in case it wants to examine them.
type rawHeader map[HeaderKey]*json.RawMessage
// Header represents the read-only JOSE header for JWE/JWS objects.
type Header struct {
KeyID string
JSONWebKey *JSONWebKey
Algorithm string
Nonce string
// Unverified certificate chain parsed from x5c header.
certificates []*x509.Certificate
// Any headers not recognised above get unmarshaled
// from JSON in a generic manner and placed in this map.
ExtraHeaders map[HeaderKey]interface{}
}
// Certificates verifies & returns the certificate chain present
// in the x5c header field of a message, if one was present. Returns
// an error if there was no x5c header present or the chain could
// not be validated with the given verify options.
func (h Header) Certificates(opts x509.VerifyOptions) ([][]*x509.Certificate, error) {
if len(h.certificates) == 0 {
return nil, errors.New("square/go-jose: no x5c header present in message")
}
leaf := h.certificates[0]
if opts.Intermediates == nil {
opts.Intermediates = x509.NewCertPool()
for _, intermediate := range h.certificates[1:] {
opts.Intermediates.AddCert(intermediate)
}
}
return leaf.Verify(opts)
}
func (parsed rawHeader) set(k HeaderKey, v interface{}) error {
b, err := json.Marshal(v)
if err != nil {
return err
}
parsed[k] = makeRawMessage(b)
return nil
}
// getString gets a string from the raw JSON, defaulting to "".
func (parsed rawHeader) getString(k HeaderKey) string {
v, ok := parsed[k]
if !ok || v == nil {
return ""
}
var s string
err := json.Unmarshal(*v, &s)
if err != nil {
return ""
}
return s
}
// getByteBuffer gets a byte buffer from the raw JSON. Returns (nil, nil) if
// not specified.
func (parsed rawHeader) getByteBuffer(k HeaderKey) (*byteBuffer, error) {
v := parsed[k]
if v == nil {
return nil, nil
}
var bb *byteBuffer
err := json.Unmarshal(*v, &bb)
if err != nil {
return nil, err
}
return bb, nil
}
// getAlgorithm extracts parsed "alg" from the raw JSON as a KeyAlgorithm.
func (parsed rawHeader) getAlgorithm() KeyAlgorithm {
return KeyAlgorithm(parsed.getString(headerAlgorithm))
}
// getSignatureAlgorithm extracts parsed "alg" from the raw JSON as a SignatureAlgorithm.
func (parsed rawHeader) getSignatureAlgorithm() SignatureAlgorithm {
return SignatureAlgorithm(parsed.getString(headerAlgorithm))
}
// getEncryption extracts parsed "enc" from the raw JSON.
func (parsed rawHeader) getEncryption() ContentEncryption {
return ContentEncryption(parsed.getString(headerEncryption))
}
// getCompression extracts parsed "zip" from the raw JSON.
func (parsed rawHeader) getCompression() CompressionAlgorithm {
return CompressionAlgorithm(parsed.getString(headerCompression))
}
func (parsed rawHeader) getNonce() string {
return parsed.getString(headerNonce)
}
// getEPK extracts parsed "epk" from the raw JSON.
func (parsed rawHeader) getEPK() (*JSONWebKey, error) {
v := parsed[headerEPK]
if v == nil {
return nil, nil
}
var epk *JSONWebKey
err := json.Unmarshal(*v, &epk)
if err != nil {
return nil, err
}
return epk, nil
}
// getAPU extracts parsed "apu" from the raw JSON.
func (parsed rawHeader) getAPU() (*byteBuffer, error) {
return parsed.getByteBuffer(headerAPU)
}
// getAPV extracts parsed "apv" from the raw JSON.
func (parsed rawHeader) getAPV() (*byteBuffer, error) {
return parsed.getByteBuffer(headerAPV)
}
// getIV extracts parsed "iv" frpom the raw JSON.
func (parsed rawHeader) getIV() (*byteBuffer, error) {
return parsed.getByteBuffer(headerIV)
}
// getTag extracts parsed "tag" frpom the raw JSON.
func (parsed rawHeader) getTag() (*byteBuffer, error) {
return parsed.getByteBuffer(headerTag)
}
// getJWK extracts parsed "jwk" from the raw JSON.
func (parsed rawHeader) getJWK() (*JSONWebKey, error) {
v := parsed[headerJWK]
if v == nil {
return nil, nil
}
var jwk *JSONWebKey
err := json.Unmarshal(*v, &jwk)
if err != nil {
return nil, err
}
return jwk, nil
}
// getCritical extracts parsed "crit" from the raw JSON. If omitted, it
// returns an empty slice.
func (parsed rawHeader) getCritical() ([]string, error) {
v := parsed[headerCritical]
if v == nil {
return nil, nil
}
var q []string
err := json.Unmarshal(*v, &q)
if err != nil {
return nil, err
}
return q, nil
}
// getS2C extracts parsed "p2c" from the raw JSON.
func (parsed rawHeader) getP2C() (int, error) {
v := parsed[headerP2C]
if v == nil {
return 0, nil
}
var p2c int
err := json.Unmarshal(*v, &p2c)
if err != nil {
return 0, err
}
return p2c, nil
}
// getS2S extracts parsed "p2s" from the raw JSON.
func (parsed rawHeader) getP2S() (*byteBuffer, error) {
return parsed.getByteBuffer(headerP2S)
}
// getB64 extracts parsed "b64" from the raw JSON, defaulting to true.
func (parsed rawHeader) getB64() (bool, error) {
v := parsed[headerB64]
if v == nil {
return true, nil
}
var b64 bool
err := json.Unmarshal(*v, &b64)
if err != nil {
return true, err
}
return b64, nil
}
// sanitized produces a cleaned-up header object from the raw JSON.
func (parsed rawHeader) sanitized() (h Header, err error) {
for k, v := range parsed {
if v == nil {
continue
}
switch k {
case headerJWK:
var jwk *JSONWebKey
err = json.Unmarshal(*v, &jwk)
if err != nil {
err = fmt.Errorf("failed to unmarshal JWK: %v: %#v", err, string(*v))
return
}
h.JSONWebKey = jwk
case headerKeyID:
var s string
err = json.Unmarshal(*v, &s)
if err != nil {
err = fmt.Errorf("failed to unmarshal key ID: %v: %#v", err, string(*v))
return
}
h.KeyID = s
case headerAlgorithm:
var s string
err = json.Unmarshal(*v, &s)
if err != nil {
err = fmt.Errorf("failed to unmarshal algorithm: %v: %#v", err, string(*v))
return
}
h.Algorithm = s
case headerNonce:
var s string
err = json.Unmarshal(*v, &s)
if err != nil {
err = fmt.Errorf("failed to unmarshal nonce: %v: %#v", err, string(*v))
return
}
h.Nonce = s
case headerX5c:
c := []string{}
err = json.Unmarshal(*v, &c)
if err != nil {
err = fmt.Errorf("failed to unmarshal x5c header: %v: %#v", err, string(*v))
return
}
h.certificates, err = parseCertificateChain(c)
if err != nil {
err = fmt.Errorf("failed to unmarshal x5c header: %v: %#v", err, string(*v))
return
}
default:
if h.ExtraHeaders == nil {
h.ExtraHeaders = map[HeaderKey]interface{}{}
}
var v2 interface{}
err = json.Unmarshal(*v, &v2)
if err != nil {
err = fmt.Errorf("failed to unmarshal value: %v: %#v", err, string(*v))
return
}
h.ExtraHeaders[k] = v2
}
}
return
}
func parseCertificateChain(chain []string) ([]*x509.Certificate, error) {
out := make([]*x509.Certificate, len(chain))
for i, cert := range chain {
raw, err := base64.StdEncoding.DecodeString(cert)
if err != nil {
return nil, err
}
out[i], err = x509.ParseCertificate(raw)
if err != nil {
return nil, err
}
}
return out, nil
}
func (dst rawHeader) isSet(k HeaderKey) bool {
dvr := dst[k]
if dvr == nil {
return false
}
var dv interface{}
err := json.Unmarshal(*dvr, &dv)
if err != nil {
return true
}
if dvStr, ok := dv.(string); ok {
return dvStr != ""
}
return true
}
// Merge headers from src into dst, giving precedence to headers from l.
func (dst rawHeader) merge(src *rawHeader) {
if src == nil {
return
}
for k, v := range *src {
if dst.isSet(k) {
continue
}
dst[k] = v
}
}
// Get JOSE name of curve
func curveName(crv elliptic.Curve) (string, error) {
switch crv {
case elliptic.P256():
return "P-256", nil
case elliptic.P384():
return "P-384", nil
case elliptic.P521():
return "P-521", nil
default:
return "", fmt.Errorf("square/go-jose: unsupported/unknown elliptic curve")
}
}
// Get size of curve in bytes
func curveSize(crv elliptic.Curve) int {
bits := crv.Params().BitSize
div := bits / 8
mod := bits % 8
if mod == 0 {
return div
}
return div + 1
}
func makeRawMessage(b []byte) *json.RawMessage {
rm := json.RawMessage(b)
return &rm
}

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vendor/gopkg.in/square/go-jose.v2/signing.go generated vendored Normal file
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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"bytes"
"crypto/ecdsa"
"crypto/rsa"
"encoding/base64"
"errors"
"fmt"
"golang.org/x/crypto/ed25519"
"gopkg.in/square/go-jose.v2/json"
)
// NonceSource represents a source of random nonces to go into JWS objects
type NonceSource interface {
Nonce() (string, error)
}
// Signer represents a signer which takes a payload and produces a signed JWS object.
type Signer interface {
Sign(payload []byte) (*JSONWebSignature, error)
Options() SignerOptions
}
// SigningKey represents an algorithm/key used to sign a message.
type SigningKey struct {
Algorithm SignatureAlgorithm
Key interface{}
}
// SignerOptions represents options that can be set when creating signers.
type SignerOptions struct {
NonceSource NonceSource
EmbedJWK bool
// Optional map of additional keys to be inserted into the protected header
// of a JWS object. Some specifications which make use of JWS like to insert
// additional values here. All values must be JSON-serializable.
ExtraHeaders map[HeaderKey]interface{}
}
// WithHeader adds an arbitrary value to the ExtraHeaders map, initializing it
// if necessary. It returns itself and so can be used in a fluent style.
func (so *SignerOptions) WithHeader(k HeaderKey, v interface{}) *SignerOptions {
if so.ExtraHeaders == nil {
so.ExtraHeaders = map[HeaderKey]interface{}{}
}
so.ExtraHeaders[k] = v
return so
}
// WithContentType adds a content type ("cty") header and returns the updated
// SignerOptions.
func (so *SignerOptions) WithContentType(contentType ContentType) *SignerOptions {
return so.WithHeader(HeaderContentType, contentType)
}
// WithType adds a type ("typ") header and returns the updated SignerOptions.
func (so *SignerOptions) WithType(typ ContentType) *SignerOptions {
return so.WithHeader(HeaderType, typ)
}
// WithCritical adds the given names to the critical ("crit") header and returns
// the updated SignerOptions.
func (so *SignerOptions) WithCritical(names ...string) *SignerOptions {
if so.ExtraHeaders[headerCritical] == nil {
so.WithHeader(headerCritical, make([]string, 0, len(names)))
}
crit := so.ExtraHeaders[headerCritical].([]string)
so.ExtraHeaders[headerCritical] = append(crit, names...)
return so
}
// WithBase64 adds a base64url-encode payload ("b64") header and returns the updated
// SignerOptions. When the "b64" value is "false", the payload is not base64 encoded.
func (so *SignerOptions) WithBase64(b64 bool) *SignerOptions {
if !b64 {
so.WithHeader(headerB64, b64)
so.WithCritical(headerB64)
}
return so
}
type payloadSigner interface {
signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error)
}
type payloadVerifier interface {
verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error
}
type genericSigner struct {
recipients []recipientSigInfo
nonceSource NonceSource
embedJWK bool
extraHeaders map[HeaderKey]interface{}
}
type recipientSigInfo struct {
sigAlg SignatureAlgorithm
publicKey func() *JSONWebKey
signer payloadSigner
}
func staticPublicKey(jwk *JSONWebKey) func() *JSONWebKey {
return func() *JSONWebKey {
return jwk
}
}
// NewSigner creates an appropriate signer based on the key type
func NewSigner(sig SigningKey, opts *SignerOptions) (Signer, error) {
return NewMultiSigner([]SigningKey{sig}, opts)
}
// NewMultiSigner creates a signer for multiple recipients
func NewMultiSigner(sigs []SigningKey, opts *SignerOptions) (Signer, error) {
signer := &genericSigner{recipients: []recipientSigInfo{}}
if opts != nil {
signer.nonceSource = opts.NonceSource
signer.embedJWK = opts.EmbedJWK
signer.extraHeaders = opts.ExtraHeaders
}
for _, sig := range sigs {
err := signer.addRecipient(sig.Algorithm, sig.Key)
if err != nil {
return nil, err
}
}
return signer, nil
}
// newVerifier creates a verifier based on the key type
func newVerifier(verificationKey interface{}) (payloadVerifier, error) {
switch verificationKey := verificationKey.(type) {
case ed25519.PublicKey:
return &edEncrypterVerifier{
publicKey: verificationKey,
}, nil
case *rsa.PublicKey:
return &rsaEncrypterVerifier{
publicKey: verificationKey,
}, nil
case *ecdsa.PublicKey:
return &ecEncrypterVerifier{
publicKey: verificationKey,
}, nil
case []byte:
return &symmetricMac{
key: verificationKey,
}, nil
case JSONWebKey:
return newVerifier(verificationKey.Key)
case *JSONWebKey:
return newVerifier(verificationKey.Key)
}
if ov, ok := verificationKey.(OpaqueVerifier); ok {
return &opaqueVerifier{verifier: ov}, nil
}
return nil, ErrUnsupportedKeyType
}
func (ctx *genericSigner) addRecipient(alg SignatureAlgorithm, signingKey interface{}) error {
recipient, err := makeJWSRecipient(alg, signingKey)
if err != nil {
return err
}
ctx.recipients = append(ctx.recipients, recipient)
return nil
}
func makeJWSRecipient(alg SignatureAlgorithm, signingKey interface{}) (recipientSigInfo, error) {
switch signingKey := signingKey.(type) {
case ed25519.PrivateKey:
return newEd25519Signer(alg, signingKey)
case *rsa.PrivateKey:
return newRSASigner(alg, signingKey)
case *ecdsa.PrivateKey:
return newECDSASigner(alg, signingKey)
case []byte:
return newSymmetricSigner(alg, signingKey)
case JSONWebKey:
return newJWKSigner(alg, signingKey)
case *JSONWebKey:
return newJWKSigner(alg, *signingKey)
}
if signer, ok := signingKey.(OpaqueSigner); ok {
return newOpaqueSigner(alg, signer)
}
return recipientSigInfo{}, ErrUnsupportedKeyType
}
func newJWKSigner(alg SignatureAlgorithm, signingKey JSONWebKey) (recipientSigInfo, error) {
recipient, err := makeJWSRecipient(alg, signingKey.Key)
if err != nil {
return recipientSigInfo{}, err
}
if recipient.publicKey != nil && recipient.publicKey() != nil {
// recipient.publicKey is a JWK synthesized for embedding when recipientSigInfo
// was created for the inner key (such as a RSA or ECDSA public key). It contains
// the pub key for embedding, but doesn't have extra params like key id.
publicKey := signingKey
publicKey.Key = recipient.publicKey().Key
recipient.publicKey = staticPublicKey(&publicKey)
// This should be impossible, but let's check anyway.
if !recipient.publicKey().IsPublic() {
return recipientSigInfo{}, errors.New("square/go-jose: public key was unexpectedly not public")
}
}
return recipient, nil
}
func (ctx *genericSigner) Sign(payload []byte) (*JSONWebSignature, error) {
obj := &JSONWebSignature{}
obj.payload = payload
obj.Signatures = make([]Signature, len(ctx.recipients))
for i, recipient := range ctx.recipients {
protected := map[HeaderKey]interface{}{
headerAlgorithm: string(recipient.sigAlg),
}
if recipient.publicKey != nil && recipient.publicKey() != nil {
// We want to embed the JWK or set the kid header, but not both. Having a protected
// header that contains an embedded JWK while also simultaneously containing the kid
// header is confusing, and at least in ACME the two are considered to be mutually
// exclusive. The fact that both can exist at the same time is a somewhat unfortunate
// result of the JOSE spec. We've decided that this library will only include one or
// the other to avoid this confusion.
//
// See https://github.com/square/go-jose/issues/157 for more context.
if ctx.embedJWK {
protected[headerJWK] = recipient.publicKey()
} else {
keyID := recipient.publicKey().KeyID
if keyID != "" {
protected[headerKeyID] = keyID
}
}
}
if ctx.nonceSource != nil {
nonce, err := ctx.nonceSource.Nonce()
if err != nil {
return nil, fmt.Errorf("square/go-jose: Error generating nonce: %v", err)
}
protected[headerNonce] = nonce
}
for k, v := range ctx.extraHeaders {
protected[k] = v
}
serializedProtected := mustSerializeJSON(protected)
needsBase64 := true
if b64, ok := protected[headerB64]; ok {
if needsBase64, ok = b64.(bool); !ok {
return nil, errors.New("square/go-jose: Invalid b64 header parameter")
}
}
var input bytes.Buffer
input.WriteString(base64.RawURLEncoding.EncodeToString(serializedProtected))
input.WriteByte('.')
if needsBase64 {
input.WriteString(base64.RawURLEncoding.EncodeToString(payload))
} else {
input.Write(payload)
}
signatureInfo, err := recipient.signer.signPayload(input.Bytes(), recipient.sigAlg)
if err != nil {
return nil, err
}
signatureInfo.protected = &rawHeader{}
for k, v := range protected {
b, err := json.Marshal(v)
if err != nil {
return nil, fmt.Errorf("square/go-jose: Error marshalling item %#v: %v", k, err)
}
(*signatureInfo.protected)[k] = makeRawMessage(b)
}
obj.Signatures[i] = signatureInfo
}
return obj, nil
}
func (ctx *genericSigner) Options() SignerOptions {
return SignerOptions{
NonceSource: ctx.nonceSource,
EmbedJWK: ctx.embedJWK,
ExtraHeaders: ctx.extraHeaders,
}
}
// Verify validates the signature on the object and returns the payload.
// This function does not support multi-signature, if you desire multi-sig
// verification use VerifyMulti instead.
//
// Be careful when verifying signatures based on embedded JWKs inside the
// payload header. You cannot assume that the key received in a payload is
// trusted.
func (obj JSONWebSignature) Verify(verificationKey interface{}) ([]byte, error) {
err := obj.DetachedVerify(obj.payload, verificationKey)
if err != nil {
return nil, err
}
return obj.payload, nil
}
// UnsafePayloadWithoutVerification returns the payload without
// verifying it. The content returned from this function cannot be
// trusted.
func (obj JSONWebSignature) UnsafePayloadWithoutVerification() []byte {
return obj.payload
}
// DetachedVerify validates a detached signature on the given payload. In
// most cases, you will probably want to use Verify instead. DetachedVerify
// is only useful if you have a payload and signature that are separated from
// each other.
func (obj JSONWebSignature) DetachedVerify(payload []byte, verificationKey interface{}) error {
verifier, err := newVerifier(verificationKey)
if err != nil {
return err
}
if len(obj.Signatures) > 1 {
return errors.New("square/go-jose: too many signatures in payload; expecting only one")
}
signature := obj.Signatures[0]
headers := signature.mergedHeaders()
critical, err := headers.getCritical()
if err != nil {
return err
}
for _, name := range critical {
if !supportedCritical[name] {
return ErrCryptoFailure
}
}
input, err := obj.computeAuthData(payload, &signature)
if err != nil {
return ErrCryptoFailure
}
alg := headers.getSignatureAlgorithm()
err = verifier.verifyPayload(input, signature.Signature, alg)
if err == nil {
return nil
}
return ErrCryptoFailure
}
// VerifyMulti validates (one of the multiple) signatures on the object and
// returns the index of the signature that was verified, along with the signature
// object and the payload. We return the signature and index to guarantee that
// callers are getting the verified value.
func (obj JSONWebSignature) VerifyMulti(verificationKey interface{}) (int, Signature, []byte, error) {
idx, sig, err := obj.DetachedVerifyMulti(obj.payload, verificationKey)
if err != nil {
return -1, Signature{}, nil, err
}
return idx, sig, obj.payload, nil
}
// DetachedVerifyMulti validates a detached signature on the given payload with
// a signature/object that has potentially multiple signers. This returns the index
// of the signature that was verified, along with the signature object. We return
// the signature and index to guarantee that callers are getting the verified value.
//
// In most cases, you will probably want to use Verify or VerifyMulti instead.
// DetachedVerifyMulti is only useful if you have a payload and signature that are
// separated from each other, and the signature can have multiple signers at the
// same time.
func (obj JSONWebSignature) DetachedVerifyMulti(payload []byte, verificationKey interface{}) (int, Signature, error) {
verifier, err := newVerifier(verificationKey)
if err != nil {
return -1, Signature{}, err
}
outer:
for i, signature := range obj.Signatures {
headers := signature.mergedHeaders()
critical, err := headers.getCritical()
if err != nil {
continue
}
for _, name := range critical {
if !supportedCritical[name] {
continue outer
}
}
input, err := obj.computeAuthData(payload, &signature)
if err != nil {
continue
}
alg := headers.getSignatureAlgorithm()
err = verifier.verifyPayload(input, signature.Signature, alg)
if err == nil {
return i, signature, nil
}
}
return -1, Signature{}, ErrCryptoFailure
}

482
vendor/gopkg.in/square/go-jose.v2/symmetric.go generated vendored Normal file
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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jose
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/hmac"
"crypto/rand"
"crypto/sha256"
"crypto/sha512"
"crypto/subtle"
"errors"
"fmt"
"hash"
"io"
"golang.org/x/crypto/pbkdf2"
"gopkg.in/square/go-jose.v2/cipher"
)
// Random reader (stubbed out in tests)
var RandReader = rand.Reader
const (
// RFC7518 recommends a minimum of 1,000 iterations:
// https://tools.ietf.org/html/rfc7518#section-4.8.1.2
// NIST recommends a minimum of 10,000:
// https://pages.nist.gov/800-63-3/sp800-63b.html
// 1Password uses 100,000:
// https://support.1password.com/pbkdf2/
defaultP2C = 100000
// Default salt size: 128 bits
defaultP2SSize = 16
)
// Dummy key cipher for shared symmetric key mode
type symmetricKeyCipher struct {
key []byte // Pre-shared content-encryption key
p2c int // PBES2 Count
p2s []byte // PBES2 Salt Input
}
// Signer/verifier for MAC modes
type symmetricMac struct {
key []byte
}
// Input/output from an AEAD operation
type aeadParts struct {
iv, ciphertext, tag []byte
}
// A content cipher based on an AEAD construction
type aeadContentCipher struct {
keyBytes int
authtagBytes int
getAead func(key []byte) (cipher.AEAD, error)
}
// Random key generator
type randomKeyGenerator struct {
size int
}
// Static key generator
type staticKeyGenerator struct {
key []byte
}
// Create a new content cipher based on AES-GCM
func newAESGCM(keySize int) contentCipher {
return &aeadContentCipher{
keyBytes: keySize,
authtagBytes: 16,
getAead: func(key []byte) (cipher.AEAD, error) {
aes, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
return cipher.NewGCM(aes)
},
}
}
// Create a new content cipher based on AES-CBC+HMAC
func newAESCBC(keySize int) contentCipher {
return &aeadContentCipher{
keyBytes: keySize * 2,
authtagBytes: keySize,
getAead: func(key []byte) (cipher.AEAD, error) {
return josecipher.NewCBCHMAC(key, aes.NewCipher)
},
}
}
// Get an AEAD cipher object for the given content encryption algorithm
func getContentCipher(alg ContentEncryption) contentCipher {
switch alg {
case A128GCM:
return newAESGCM(16)
case A192GCM:
return newAESGCM(24)
case A256GCM:
return newAESGCM(32)
case A128CBC_HS256:
return newAESCBC(16)
case A192CBC_HS384:
return newAESCBC(24)
case A256CBC_HS512:
return newAESCBC(32)
default:
return nil
}
}
// getPbkdf2Params returns the key length and hash function used in
// pbkdf2.Key.
func getPbkdf2Params(alg KeyAlgorithm) (int, func() hash.Hash) {
switch alg {
case PBES2_HS256_A128KW:
return 16, sha256.New
case PBES2_HS384_A192KW:
return 24, sha512.New384
case PBES2_HS512_A256KW:
return 32, sha512.New
default:
panic("invalid algorithm")
}
}
// getRandomSalt generates a new salt of the given size.
func getRandomSalt(size int) ([]byte, error) {
salt := make([]byte, size)
_, err := io.ReadFull(RandReader, salt)
if err != nil {
return nil, err
}
return salt, nil
}
// newSymmetricRecipient creates a JWE encrypter based on AES-GCM key wrap.
func newSymmetricRecipient(keyAlg KeyAlgorithm, key []byte) (recipientKeyInfo, error) {
switch keyAlg {
case DIRECT, A128GCMKW, A192GCMKW, A256GCMKW, A128KW, A192KW, A256KW:
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
default:
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
}
return recipientKeyInfo{
keyAlg: keyAlg,
keyEncrypter: &symmetricKeyCipher{
key: key,
},
}, nil
}
// newSymmetricSigner creates a recipientSigInfo based on the given key.
func newSymmetricSigner(sigAlg SignatureAlgorithm, key []byte) (recipientSigInfo, error) {
// Verify that key management algorithm is supported by this encrypter
switch sigAlg {
case HS256, HS384, HS512:
default:
return recipientSigInfo{}, ErrUnsupportedAlgorithm
}
return recipientSigInfo{
sigAlg: sigAlg,
signer: &symmetricMac{
key: key,
},
}, nil
}
// Generate a random key for the given content cipher
func (ctx randomKeyGenerator) genKey() ([]byte, rawHeader, error) {
key := make([]byte, ctx.size)
_, err := io.ReadFull(RandReader, key)
if err != nil {
return nil, rawHeader{}, err
}
return key, rawHeader{}, nil
}
// Key size for random generator
func (ctx randomKeyGenerator) keySize() int {
return ctx.size
}
// Generate a static key (for direct mode)
func (ctx staticKeyGenerator) genKey() ([]byte, rawHeader, error) {
cek := make([]byte, len(ctx.key))
copy(cek, ctx.key)
return cek, rawHeader{}, nil
}
// Key size for static generator
func (ctx staticKeyGenerator) keySize() int {
return len(ctx.key)
}
// Get key size for this cipher
func (ctx aeadContentCipher) keySize() int {
return ctx.keyBytes
}
// Encrypt some data
func (ctx aeadContentCipher) encrypt(key, aad, pt []byte) (*aeadParts, error) {
// Get a new AEAD instance
aead, err := ctx.getAead(key)
if err != nil {
return nil, err
}
// Initialize a new nonce
iv := make([]byte, aead.NonceSize())
_, err = io.ReadFull(RandReader, iv)
if err != nil {
return nil, err
}
ciphertextAndTag := aead.Seal(nil, iv, pt, aad)
offset := len(ciphertextAndTag) - ctx.authtagBytes
return &aeadParts{
iv: iv,
ciphertext: ciphertextAndTag[:offset],
tag: ciphertextAndTag[offset:],
}, nil
}
// Decrypt some data
func (ctx aeadContentCipher) decrypt(key, aad []byte, parts *aeadParts) ([]byte, error) {
aead, err := ctx.getAead(key)
if err != nil {
return nil, err
}
if len(parts.iv) != aead.NonceSize() || len(parts.tag) < ctx.authtagBytes {
return nil, ErrCryptoFailure
}
return aead.Open(nil, parts.iv, append(parts.ciphertext, parts.tag...), aad)
}
// Encrypt the content encryption key.
func (ctx *symmetricKeyCipher) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
switch alg {
case DIRECT:
return recipientInfo{
header: &rawHeader{},
}, nil
case A128GCMKW, A192GCMKW, A256GCMKW:
aead := newAESGCM(len(ctx.key))
parts, err := aead.encrypt(ctx.key, []byte{}, cek)
if err != nil {
return recipientInfo{}, err
}
header := &rawHeader{}
header.set(headerIV, newBuffer(parts.iv))
header.set(headerTag, newBuffer(parts.tag))
return recipientInfo{
header: header,
encryptedKey: parts.ciphertext,
}, nil
case A128KW, A192KW, A256KW:
block, err := aes.NewCipher(ctx.key)
if err != nil {
return recipientInfo{}, err
}
jek, err := josecipher.KeyWrap(block, cek)
if err != nil {
return recipientInfo{}, err
}
return recipientInfo{
encryptedKey: jek,
header: &rawHeader{},
}, nil
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
if len(ctx.p2s) == 0 {
salt, err := getRandomSalt(defaultP2SSize)
if err != nil {
return recipientInfo{}, err
}
ctx.p2s = salt
}
if ctx.p2c <= 0 {
ctx.p2c = defaultP2C
}
// salt is UTF8(Alg) || 0x00 || Salt Input
salt := bytes.Join([][]byte{[]byte(alg), ctx.p2s}, []byte{0x00})
// derive key
keyLen, h := getPbkdf2Params(alg)
key := pbkdf2.Key(ctx.key, salt, ctx.p2c, keyLen, h)
// use AES cipher with derived key
block, err := aes.NewCipher(key)
if err != nil {
return recipientInfo{}, err
}
jek, err := josecipher.KeyWrap(block, cek)
if err != nil {
return recipientInfo{}, err
}
header := &rawHeader{}
header.set(headerP2C, ctx.p2c)
header.set(headerP2S, newBuffer(ctx.p2s))
return recipientInfo{
encryptedKey: jek,
header: header,
}, nil
}
return recipientInfo{}, ErrUnsupportedAlgorithm
}
// Decrypt the content encryption key.
func (ctx *symmetricKeyCipher) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
switch headers.getAlgorithm() {
case DIRECT:
cek := make([]byte, len(ctx.key))
copy(cek, ctx.key)
return cek, nil
case A128GCMKW, A192GCMKW, A256GCMKW:
aead := newAESGCM(len(ctx.key))
iv, err := headers.getIV()
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid IV: %v", err)
}
tag, err := headers.getTag()
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid tag: %v", err)
}
parts := &aeadParts{
iv: iv.bytes(),
ciphertext: recipient.encryptedKey,
tag: tag.bytes(),
}
cek, err := aead.decrypt(ctx.key, []byte{}, parts)
if err != nil {
return nil, err
}
return cek, nil
case A128KW, A192KW, A256KW:
block, err := aes.NewCipher(ctx.key)
if err != nil {
return nil, err
}
cek, err := josecipher.KeyUnwrap(block, recipient.encryptedKey)
if err != nil {
return nil, err
}
return cek, nil
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
p2s, err := headers.getP2S()
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid P2S: %v", err)
}
if p2s == nil || len(p2s.data) == 0 {
return nil, fmt.Errorf("square/go-jose: invalid P2S: must be present")
}
p2c, err := headers.getP2C()
if err != nil {
return nil, fmt.Errorf("square/go-jose: invalid P2C: %v", err)
}
if p2c <= 0 {
return nil, fmt.Errorf("square/go-jose: invalid P2C: must be a positive integer")
}
// salt is UTF8(Alg) || 0x00 || Salt Input
alg := headers.getAlgorithm()
salt := bytes.Join([][]byte{[]byte(alg), p2s.bytes()}, []byte{0x00})
// derive key
keyLen, h := getPbkdf2Params(alg)
key := pbkdf2.Key(ctx.key, salt, p2c, keyLen, h)
// use AES cipher with derived key
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
cek, err := josecipher.KeyUnwrap(block, recipient.encryptedKey)
if err != nil {
return nil, err
}
return cek, nil
}
return nil, ErrUnsupportedAlgorithm
}
// Sign the given payload
func (ctx symmetricMac) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
mac, err := ctx.hmac(payload, alg)
if err != nil {
return Signature{}, errors.New("square/go-jose: failed to compute hmac")
}
return Signature{
Signature: mac,
protected: &rawHeader{},
}, nil
}
// Verify the given payload
func (ctx symmetricMac) verifyPayload(payload []byte, mac []byte, alg SignatureAlgorithm) error {
expected, err := ctx.hmac(payload, alg)
if err != nil {
return errors.New("square/go-jose: failed to compute hmac")
}
if len(mac) != len(expected) {
return errors.New("square/go-jose: invalid hmac")
}
match := subtle.ConstantTimeCompare(mac, expected)
if match != 1 {
return errors.New("square/go-jose: invalid hmac")
}
return nil
}
// Compute the HMAC based on the given alg value
func (ctx symmetricMac) hmac(payload []byte, alg SignatureAlgorithm) ([]byte, error) {
var hash func() hash.Hash
switch alg {
case HS256:
hash = sha256.New
case HS384:
hash = sha512.New384
case HS512:
hash = sha512.New
default:
return nil, ErrUnsupportedAlgorithm
}
hmac := hmac.New(hash, ctx.key)
// According to documentation, Write() on hash never fails
_, _ = hmac.Write(payload)
return hmac.Sum(nil), nil
}

12
vendor/modules.txt vendored
View file

@ -2,6 +2,8 @@
github.com/PuerkitoBio/goquery
# github.com/andybalholm/cascadia v1.0.0
github.com/andybalholm/cascadia
# github.com/coreos/go-oidc v2.2.1+incompatible
github.com/coreos/go-oidc
# github.com/golang/protobuf v1.3.2
github.com/golang/protobuf/proto
# github.com/gorilla/mux v1.7.3
@ -11,11 +13,17 @@ github.com/lib/pq
github.com/lib/pq/hstore
github.com/lib/pq/oid
github.com/lib/pq/scram
# github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35
github.com/pquerna/cachecontrol
github.com/pquerna/cachecontrol/cacheobject
# golang.org/x/crypto v0.0.0-20191112222119-e1110fd1c708
golang.org/x/crypto/acme
golang.org/x/crypto/acme/autocert
golang.org/x/crypto/bcrypt
golang.org/x/crypto/blowfish
golang.org/x/crypto/ed25519
golang.org/x/crypto/ed25519/internal/edwards25519
golang.org/x/crypto/pbkdf2
golang.org/x/crypto/ssh/terminal
# golang.org/x/net v0.0.0-20191112182307-2180aed22343
golang.org/x/net/context
@ -59,3 +67,7 @@ google.golang.org/appengine/internal/log
google.golang.org/appengine/internal/remote_api
google.golang.org/appengine/internal/urlfetch
google.golang.org/appengine/urlfetch
# gopkg.in/square/go-jose.v2 v2.4.1
gopkg.in/square/go-jose.v2
gopkg.in/square/go-jose.v2/cipher
gopkg.in/square/go-jose.v2/json