141 lines
4.2 KiB
Go
141 lines
4.2 KiB
Go
package handlers
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import (
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"fmt"
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"net/http"
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"time"
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"github.com/google/uuid"
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"github.com/ory/fosite"
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"github.com/ory/fosite/token/jwt"
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"github.com/pkg/errors"
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"github.com/valyala/fasthttp"
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"github.com/authelia/authelia/v4/internal/middlewares"
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"github.com/authelia/authelia/v4/internal/model"
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"github.com/authelia/authelia/v4/internal/oidc"
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)
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// OpenIDConnectUserinfo handles GET/POST requests to the OpenID Connect 1.0 UserInfo endpoint.
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//
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// https://openid.net/specs/openid-connect-core-1_0.html#UserInfo
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func OpenIDConnectUserinfo(ctx *middlewares.AutheliaCtx, rw http.ResponseWriter, req *http.Request) {
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var (
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tokenType fosite.TokenType
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requester fosite.AccessRequester
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client oidc.Client
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err error
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)
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oidcSession := oidc.NewSession()
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if tokenType, requester, err = ctx.Providers.OpenIDConnect.IntrospectToken(
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req.Context(), fosite.AccessTokenFromRequest(req), fosite.AccessToken, oidcSession); err != nil {
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rfc := fosite.ErrorToRFC6749Error(err)
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ctx.Logger.Errorf("UserInfo Request failed with error: %s", rfc.WithExposeDebug(true).GetDescription())
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if rfc.StatusCode() == http.StatusUnauthorized {
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rw.Header().Set(fasthttp.HeaderWWWAuthenticate, fmt.Sprintf(`Bearer error="%s",error_description="%s"`, rfc.ErrorField, rfc.GetDescription()))
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}
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ctx.Providers.OpenIDConnect.WriteError(rw, req, err)
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return
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}
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clientID := requester.GetClient().GetID()
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if tokenType != fosite.AccessToken {
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ctx.Logger.Errorf("UserInfo Request with id '%s' on client with id '%s' failed with error: bearer authorization failed as the token is not an access token", requester.GetID(), client.GetID())
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errStr := "Only access tokens are allowed in the authorization header."
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rw.Header().Set(fasthttp.HeaderWWWAuthenticate, fmt.Sprintf(`Bearer error="invalid_token",error_description="%s"`, errStr))
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ctx.Providers.OpenIDConnect.WriteErrorCode(rw, req, http.StatusUnauthorized, errors.New(errStr))
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return
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}
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if client, err = ctx.Providers.OpenIDConnect.GetFullClient(clientID); err != nil {
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rfc := fosite.ErrorToRFC6749Error(err)
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ctx.Logger.Errorf("UserInfo Request with id '%s' on client with id '%s' failed to retrieve client configuration with error: %s", requester.GetID(), client.GetID(), rfc.WithExposeDebug(true).GetDescription())
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ctx.Providers.OpenIDConnect.WriteError(rw, req, errors.WithStack(rfc))
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return
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}
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claims := requester.GetSession().(*model.OpenIDSession).IDTokenClaims().ToMap()
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delete(claims, oidc.ClaimJWTID)
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delete(claims, oidc.ClaimSessionID)
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delete(claims, oidc.ClaimAccessTokenHash)
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delete(claims, oidc.ClaimCodeHash)
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delete(claims, oidc.ClaimExpirationTime)
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delete(claims, oidc.ClaimNonce)
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audience, ok := claims[oidc.ClaimAudience].([]string)
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if !ok || len(audience) == 0 {
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audience = []string{client.GetID()}
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} else {
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found := false
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for _, aud := range audience {
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if aud == clientID {
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found = true
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break
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}
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}
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if found {
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audience = append(audience, clientID)
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}
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}
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claims[oidc.ClaimAudience] = audience
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var token string
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ctx.Logger.Tracef("UserInfo Response with id '%s' on client with id '%s' is being sent with the following claims: %+v", requester.GetID(), clientID, claims)
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switch alg := client.GetUserinfoSigningAlg(); alg {
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case oidc.SigningAlgNone, "":
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ctx.Providers.OpenIDConnect.Write(rw, req, claims)
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default:
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var jwk *oidc.JWK
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if jwk = ctx.Providers.OpenIDConnect.KeyManager.Get(ctx, client.GetUserinfoSigningKeyID(), alg); jwk == nil {
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ctx.Providers.OpenIDConnect.WriteError(rw, req, errors.WithStack(fosite.ErrServerError.WithHintf("Unsupported UserInfo signing algorithm '%s'.", alg)))
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return
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}
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var jti uuid.UUID
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if jti, err = uuid.NewRandom(); err != nil {
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ctx.Providers.OpenIDConnect.WriteError(rw, req, fosite.ErrServerError.WithHint("Could not generate JTI."))
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return
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}
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claims[oidc.ClaimJWTID] = jti.String()
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claims[oidc.ClaimIssuedAt] = time.Now().Unix()
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headers := &jwt.Headers{
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Extra: map[string]any{
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oidc.JWTHeaderKeyIdentifier: jwk.KeyID(),
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},
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}
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if token, _, err = jwk.Strategy().Generate(req.Context(), claims, headers); err != nil {
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ctx.Providers.OpenIDConnect.WriteError(rw, req, err)
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return
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}
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rw.Header().Set(fasthttp.HeaderContentType, "application/jwt")
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_, _ = rw.Write([]byte(token))
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}
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}
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