Add OpenID claims "profile" and "email". (#16141)

* Added OpenID claims "profile" and "email".

* Splitted error.

* Added scopes_supported and claims_supported.

* Added more metadata.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lauris BH <lauris@nix.lv>

models/oauth2_application.go

@@ -394,7 +394,7 @@ func (grant *OAuth2Grant) TableName() string {
 	return "oauth2_grant"
 }
 
-// GenerateNewAuthorizationCode generates a new authorization code for a grant and saves it to the databse
+// GenerateNewAuthorizationCode generates a new authorization code for a grant and saves it to the database
 func (grant *OAuth2Grant) GenerateNewAuthorizationCode(redirectURI, codeChallenge, codeChallengeMethod string) (*OAuth2AuthorizationCode, error) {
 	return grant.generateNewAuthorizationCode(x, redirectURI, codeChallenge, codeChallengeMethod)
 }
@@ -567,6 +567,19 @@ func (token *OAuth2Token) SignToken() (string, error) {
 type OIDCToken struct {
 	jwt.StandardClaims
 	Nonce string `json:"nonce,omitempty"`
+
+	// Scope profile
+	Name              string             `json:"name,omitempty"`
+	PreferredUsername string             `json:"preferred_username,omitempty"`
+	Profile           string             `json:"profile,omitempty"`
+	Picture           string             `json:"picture,omitempty"`
+	Website           string             `json:"website,omitempty"`
+	Locale            string             `json:"locale,omitempty"`
+	UpdatedAt         timeutil.TimeStamp `json:"updated_at,omitempty"`
+
+	// Scope email
+	Email         string `json:"email,omitempty"`
+	EmailVerified bool   `json:"email_verified,omitempty"`
 }
 
 // SignToken signs an id_token with the (symmetric) client secret key

routers/web/user/oauth.go

@@ -185,6 +185,21 @@ func newAccessTokenResponse(grant *models.OAuth2Grant, clientSecret string) (*Ac
 				ErrorDescription: "cannot find application",
 			}
 		}
+		err = app.LoadUser()
+		if err != nil {
+			if models.IsErrUserNotExist(err) {
+				return nil, &AccessTokenError{
+					ErrorCode:        AccessTokenErrorCodeInvalidRequest,
+					ErrorDescription: "cannot find user",
+				}
+			}
+			log.Error("Error loading user: %v", err)
+			return nil, &AccessTokenError{
+				ErrorCode:        AccessTokenErrorCodeInvalidRequest,
+				ErrorDescription: "server error",
+			}
+		}
+
 		idToken := &models.OIDCToken{
 			StandardClaims: jwt.StandardClaims{
 				ExpiresAt: expirationDate.AsTime().Unix(),
@@ -194,6 +209,20 @@ func newAccessTokenResponse(grant *models.OAuth2Grant, clientSecret string) (*Ac
 			},
 			Nonce: grant.Nonce,
 		}
+		if grant.ScopeContains("profile") {
+			idToken.Name = app.User.FullName
+			idToken.PreferredUsername = app.User.Name
+			idToken.Profile = app.User.HTMLURL()
+			idToken.Picture = app.User.AvatarLink()
+			idToken.Website = app.User.Website
+			idToken.Locale = app.User.Language
+			idToken.UpdatedAt = app.User.UpdatedUnix
+		}
+		if grant.ScopeContains("email") {
+			idToken.Email = app.User.Email
+			idToken.EmailVerified = app.User.IsActive
+		}
+
 		signedIDToken, err = idToken.SignToken(clientSecret)
 		if err != nil {
 			return nil, &AccessTokenError{

templates/user/auth/oidc_wellknown.tmpl

@@ -6,5 +6,34 @@
     "response_types_supported": [
         "code",
         "id_token"
+    ],
+    "scopes_supported": [
+        "openid",
+        "profile",
+        "email"
+    ],
+    "claims_supported": [
+        "aud",
+        "exp",
+        "iat",
+        "iss",
+        "sub",
+        "name",
+        "preferred_username",
+        "profile",
+        "picture",
+        "website",
+        "locale",
+        "updated_at",
+        "email",
+        "email_verified"
+    ],
+    "code_challenge_methods_supported": [
+        "plain",
+        "S256"
+    ],
+    "grant_types_supported": [
+        "authorization_code",
+        "refresh_token"
     ]
 }