96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
package op
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import (
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"context"
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"time"
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"github.com/zitadel/oidc/pkg/oidc"
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)
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type AccessTokenVerifier interface {
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oidc.Verifier
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SupportedSignAlgs() []string
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KeySet() oidc.KeySet
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}
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type accessTokenVerifier struct {
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issuer string
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maxAgeIAT time.Duration
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offset time.Duration
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supportedSignAlgs []string
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maxAge time.Duration
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acr oidc.ACRVerifier
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keySet oidc.KeySet
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}
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// Issuer implements oidc.Verifier interface
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func (i *accessTokenVerifier) Issuer() string {
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return i.issuer
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}
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// MaxAgeIAT implements oidc.Verifier interface
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func (i *accessTokenVerifier) MaxAgeIAT() time.Duration {
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return i.maxAgeIAT
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}
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// Offset implements oidc.Verifier interface
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func (i *accessTokenVerifier) Offset() time.Duration {
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return i.offset
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}
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// SupportedSignAlgs implements AccessTokenVerifier interface
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func (i *accessTokenVerifier) SupportedSignAlgs() []string {
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return i.supportedSignAlgs
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}
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// KeySet implements AccessTokenVerifier interface
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func (i *accessTokenVerifier) KeySet() oidc.KeySet {
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return i.keySet
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}
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type AccessTokenVerifierOpt func(*accessTokenVerifier)
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func WithSupportedAccessTokenSigningAlgorithms(algs ...string) AccessTokenVerifierOpt {
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return func(verifier *accessTokenVerifier) {
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verifier.supportedSignAlgs = algs
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}
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}
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func NewAccessTokenVerifier(issuer string, keySet oidc.KeySet, opts ...AccessTokenVerifierOpt) AccessTokenVerifier {
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verifier := &accessTokenVerifier{
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issuer: issuer,
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keySet: keySet,
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}
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for _, opt := range opts {
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opt(verifier)
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}
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return verifier
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}
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// VerifyAccessToken validates the access token (issuer, signature and expiration)
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func VerifyAccessToken(ctx context.Context, token string, v AccessTokenVerifier) (oidc.AccessTokenClaims, error) {
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claims := oidc.EmptyAccessTokenClaims()
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decrypted, err := oidc.DecryptToken(token)
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if err != nil {
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return nil, err
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}
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payload, err := oidc.ParseToken(decrypted, claims)
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if err != nil {
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return nil, err
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}
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if err := oidc.CheckIssuer(claims, v.Issuer()); err != nil {
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return nil, err
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}
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if err = oidc.CheckSignature(ctx, decrypted, payload, claims, v.SupportedSignAlgs(), v.KeySet()); err != nil {
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return nil, err
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}
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if err = oidc.CheckExpiration(claims, v.Offset()); err != nil {
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return nil, err
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}
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return claims, nil
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}
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