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package oidc
import (
"context"
"time"
"github.com/zitadel/oidc/v3/pkg/oidc"
"github.com/zitadel/oidc/v3/pkg/op"
"github.com/zitadel/zitadel/internal/crypto"
"github.com/zitadel/zitadel/internal/query"
"github.com/zitadel/zitadel/internal/zerrors"
)
type clientCredentialsRequest struct {
sub string
audience []string
scopes []string
}
// GetSubject returns the subject for token to be created because of the client credentials request
// the subject will be the id of the service user
func (c *clientCredentialsRequest) GetSubject() string {
return c.sub
}
// GetAudience returns the audience for token to be created because of the client credentials request
func (c *clientCredentialsRequest) GetAudience() []string {
return c.audience
}
func (c *clientCredentialsRequest) GetScopes() []string {
return c.scopes
}
func (s *Server) clientCredentialsAuth(ctx context.Context, clientID, clientSecret string) (op.Client, error) {
user, err := s.query.GetUserByLoginName(ctx, false, clientID)
if zerrors.IsNotFound(err) {
return nil, oidc.ErrInvalidClient().WithParent(err).WithDescription("client not found")
}
if err != nil {
return nil, err // defaults to server error
}
if user.Machine == nil || user.Machine.Secret == nil {
return nil, zerrors.ThrowPreconditionFailed(nil, "OIDC-pieP8", "Errors.User.Machine.Secret.NotExisting")
}
if err = crypto.CompareHash(user.Machine.Secret, []byte(clientSecret), s.hashAlg); err != nil {
s.command.MachineSecretCheckFailed(ctx, user.ID, user.ResourceOwner)
return nil, zerrors.ThrowInvalidArgument(err, "OIDC-VoXo6", "Errors.User.Machine.Secret.Invalid")
}
s.command.MachineSecretCheckSucceeded(ctx, user.ID, user.ResourceOwner)
return &clientCredentialsClient{
id: clientID,
user: user,
}, nil
}
type clientCredentialsClient struct {
id string
user *query.User
}
// AccessTokenType returns the AccessTokenType for the token to be created because of the client credentials request
// machine users currently only have opaque tokens ([op.AccessTokenTypeBearer])
func (c *clientCredentialsClient) AccessTokenType() op.AccessTokenType {
return accessTokenTypeToOIDC(c.user.Machine.AccessTokenType)
}
// GetID returns the client_id (username of the machine user) for the token to be created because of the client credentials request
func (c *clientCredentialsClient) GetID() string {
return c.id
}
// RedirectURIs returns nil as there are no redirect uris
func (c *clientCredentialsClient) RedirectURIs() []string {
return nil
}
// PostLogoutRedirectURIs returns nil as there are no logout redirect uris
func (c *clientCredentialsClient) PostLogoutRedirectURIs() []string {
return nil
}
// ApplicationType returns [op.ApplicationTypeWeb] as the machine users is a confidential client
func (c *clientCredentialsClient) ApplicationType() op.ApplicationType {
return op.ApplicationTypeWeb
}
// AuthMethod returns the allowed auth method type for machine user.
// It returns Basic Auth
func (c *clientCredentialsClient) AuthMethod() oidc.AuthMethod {
return oidc.AuthMethodBasic
}
// ResponseTypes returns nil as the types are only required for an authorization request
func (c *clientCredentialsClient) ResponseTypes() []oidc.ResponseType {
return nil
}
// GrantTypes returns the grant types supported by the machine users, which is currently only client credentials ([oidc.GrantTypeClientCredentials])
func (c *clientCredentialsClient) GrantTypes() []oidc.GrantType {
return []oidc.GrantType{
oidc.GrantTypeClientCredentials,
}
}
// LoginURL returns an empty string as there is no login UI involved
func (c *clientCredentialsClient) LoginURL(_ string) string {
return ""
}
// IDTokenLifetime returns 0 as there is no id_token issued
func (c *clientCredentialsClient) IDTokenLifetime() time.Duration {
return 0
}
// DevMode returns false as there is no dev mode
func (c *clientCredentialsClient) DevMode() bool {
return false
}
// RestrictAdditionalIdTokenScopes returns nil as no id_token is issued
func (c *clientCredentialsClient) RestrictAdditionalIdTokenScopes() func(scopes []string) []string {
return nil
}
// RestrictAdditionalAccessTokenScopes returns the scope allowed for the token to be created because of the client credentials request
// currently it allows all scopes to be used in the access token
func (c *clientCredentialsClient) RestrictAdditionalAccessTokenScopes() func(scopes []string) []string {
return func(scopes []string) []string {
return scopes
}
}
// IsScopeAllowed returns null false as the check is executed during the auth request validation
func (c *clientCredentialsClient) IsScopeAllowed(scope string) bool {
return false
}
// IDTokenUserinfoClaimsAssertion returns null false as no id_token is issued
func (c *clientCredentialsClient) IDTokenUserinfoClaimsAssertion() bool {
return false
}
// ClockSkew enable handling clock skew of the token validation. The duration (0-5s) will be added to exp claim and subtracted from iats,
// auth_time and nbf of the token to be created because of the client credentials request.
// It returns 0 as clock skew is not implemented on machine users.
func (c *clientCredentialsClient) ClockSkew() time.Duration {
return 0
}