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Make oauth2 code clear. Move oauth2 provider code to their own packages/files (#32148) 

Fix #30266
Replace #31533
This commit is contained in:
Lunny Xiao 2024-10-02 08:03:19 +08:00 committed by GitHub
parent 70b7df0e5e
commit 3a4a1bffbe
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GPG Key ID: B5690EEEBB952194
11 changed files with 933 additions and 888 deletions
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3
routers/init.go
View File

@ -47,6 +47,7 @@ import (
markup_service "code.gitea.io/gitea/services/markup" markup_service "code.gitea.io/gitea/services/markup"
repo_migrations "code.gitea.io/gitea/services/migrations" repo_migrations "code.gitea.io/gitea/services/migrations"
mirror_service "code.gitea.io/gitea/services/mirror" mirror_service "code.gitea.io/gitea/services/mirror"
"code.gitea.io/gitea/services/oauth2_provider"
pull_service "code.gitea.io/gitea/services/pull" pull_service "code.gitea.io/gitea/services/pull"
release_service "code.gitea.io/gitea/services/release" release_service "code.gitea.io/gitea/services/release"
repo_service "code.gitea.io/gitea/services/repository" repo_service "code.gitea.io/gitea/services/repository"
@ -144,7 +145,7 @@ func InitWebInstalled(ctx context.Context) {
log.Info("ORM engine initialization successful!") log.Info("ORM engine initialization successful!")
mustInit(system.Init) mustInit(system.Init)
mustInitCtx(ctx, oauth2.Init) mustInitCtx(ctx, oauth2.Init)
mustInitCtx(ctx, oauth2_provider.Init)
mustInit(release_service.Init) mustInit(release_service.Init)
mustInitCtx(ctx, models.Init) mustInitCtx(ctx, models.Init)

844
routers/web/auth/oauth.go
View File

@ -4,878 +4,34 @@
package auth package auth
import ( import (
go_context "context"
"errors" "errors"
"fmt" "fmt"
"html" "html"
"html/template"
"io" "io"
"net/http" "net/http"
"net/url"
"sort" "sort"
"strings" "strings"
"code.gitea.io/gitea/models/auth" "code.gitea.io/gitea/models/auth"
org_model "code.gitea.io/gitea/models/organization"
user_model "code.gitea.io/gitea/models/user" user_model "code.gitea.io/gitea/models/user"
auth_module "code.gitea.io/gitea/modules/auth" auth_module "code.gitea.io/gitea/modules/auth"
"code.gitea.io/gitea/modules/base" "code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/container" "code.gitea.io/gitea/modules/container"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/optional" "code.gitea.io/gitea/modules/optional"
"code.gitea.io/gitea/modules/setting" "code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/modules/web/middleware" "code.gitea.io/gitea/modules/web/middleware"
auth_service "code.gitea.io/gitea/services/auth"
source_service "code.gitea.io/gitea/services/auth/source" source_service "code.gitea.io/gitea/services/auth/source"
"code.gitea.io/gitea/services/auth/source/oauth2" "code.gitea.io/gitea/services/auth/source/oauth2"
"code.gitea.io/gitea/services/context" "code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/externalaccount" "code.gitea.io/gitea/services/externalaccount"
"code.gitea.io/gitea/services/forms"
user_service "code.gitea.io/gitea/services/user" user_service "code.gitea.io/gitea/services/user"
"gitea.com/go-chi/binding"
"github.com/golang-jwt/jwt/v5"
"github.com/markbates/goth" "github.com/markbates/goth"
"github.com/markbates/goth/gothic" "github.com/markbates/goth/gothic"
go_oauth2 "golang.org/x/oauth2" go_oauth2 "golang.org/x/oauth2"
) )
const (
tplGrantAccess base.TplName = "user/auth/grant"
tplGrantError base.TplName = "user/auth/grant_error"
)
// TODO move error and responses to SDK or models
// AuthorizeErrorCode represents an error code specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2.1
type AuthorizeErrorCode string
const (
// ErrorCodeInvalidRequest represents the according error in RFC 6749
ErrorCodeInvalidRequest AuthorizeErrorCode = "invalid_request"
// ErrorCodeUnauthorizedClient represents the according error in RFC 6749
ErrorCodeUnauthorizedClient AuthorizeErrorCode = "unauthorized_client"
// ErrorCodeAccessDenied represents the according error in RFC 6749
ErrorCodeAccessDenied AuthorizeErrorCode = "access_denied"
// ErrorCodeUnsupportedResponseType represents the according error in RFC 6749
ErrorCodeUnsupportedResponseType AuthorizeErrorCode = "unsupported_response_type"
// ErrorCodeInvalidScope represents the according error in RFC 6749
ErrorCodeInvalidScope AuthorizeErrorCode = "invalid_scope"
// ErrorCodeServerError represents the according error in RFC 6749
ErrorCodeServerError AuthorizeErrorCode = "server_error"
// ErrorCodeTemporaryUnavailable represents the according error in RFC 6749
ErrorCodeTemporaryUnavailable AuthorizeErrorCode = "temporarily_unavailable"
)
// AuthorizeError represents an error type specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2.1
type AuthorizeError struct {
ErrorCode AuthorizeErrorCode `json:"error" form:"error"`
ErrorDescription string
State string
}
// Error returns the error message
func (err AuthorizeError) Error() string {
return fmt.Sprintf("%s: %s", err.ErrorCode, err.ErrorDescription)
}
// AccessTokenErrorCode represents an error code specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
type AccessTokenErrorCode string
const (
// AccessTokenErrorCodeInvalidRequest represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidRequest AccessTokenErrorCode = "invalid_request"
// AccessTokenErrorCodeInvalidClient represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidClient = "invalid_client"
// AccessTokenErrorCodeInvalidGrant represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidGrant = "invalid_grant"
// AccessTokenErrorCodeUnauthorizedClient represents an error code specified in RFC 6749
AccessTokenErrorCodeUnauthorizedClient = "unauthorized_client"
// AccessTokenErrorCodeUnsupportedGrantType represents an error code specified in RFC 6749
AccessTokenErrorCodeUnsupportedGrantType = "unsupported_grant_type"
// AccessTokenErrorCodeInvalidScope represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidScope = "invalid_scope"
)
// AccessTokenError represents an error response specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
type AccessTokenError struct {
ErrorCode AccessTokenErrorCode `json:"error" form:"error"`
ErrorDescription string `json:"error_description"`
}
// Error returns the error message
func (err AccessTokenError) Error() string {
return fmt.Sprintf("%s: %s", err.ErrorCode, err.ErrorDescription)
}
// errCallback represents a oauth2 callback error
type errCallback struct {
Code string
Description string
}
func (err errCallback) Error() string {
return err.Description
}
// TokenType specifies the kind of token
type TokenType string
const (
// TokenTypeBearer represents a token type specified in RFC 6749
TokenTypeBearer TokenType = "bearer"
// TokenTypeMAC represents a token type specified in RFC 6749
TokenTypeMAC = "mac"
)
// AccessTokenResponse represents a successful access token response
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2
type AccessTokenResponse struct {
AccessToken string `json:"access_token"`
TokenType TokenType `json:"token_type"`
ExpiresIn int64 `json:"expires_in"`
RefreshToken string `json:"refresh_token"`
IDToken string `json:"id_token,omitempty"`
}
func newAccessTokenResponse(ctx go_context.Context, grant *auth.OAuth2Grant, serverKey, clientKey oauth2.JWTSigningKey) (*AccessTokenResponse, *AccessTokenError) {
if setting.OAuth2.InvalidateRefreshTokens {
if err := grant.IncreaseCounter(ctx); err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "cannot increase the grant counter",
}
}
}
// generate access token to access the API
expirationDate := timeutil.TimeStampNow().Add(setting.OAuth2.AccessTokenExpirationTime)
accessToken := &oauth2.Token{
GrantID: grant.ID,
Type: oauth2.TypeAccessToken,
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(expirationDate.AsTime()),
},
}
signedAccessToken, err := accessToken.SignToken(serverKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
// generate refresh token to request an access token after it expired later
refreshExpirationDate := timeutil.TimeStampNow().Add(setting.OAuth2.RefreshTokenExpirationTime * 60 * 60).AsTime()
refreshToken := &oauth2.Token{
GrantID: grant.ID,
Counter: grant.Counter,
Type: oauth2.TypeRefreshToken,
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(refreshExpirationDate),
},
}
signedRefreshToken, err := refreshToken.SignToken(serverKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
// generate OpenID Connect id_token
signedIDToken := ""
if grant.ScopeContains("openid") {
app, err := auth.GetOAuth2ApplicationByID(ctx, grant.ApplicationID)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot find application",
}
}
user, err := user_model.GetUserByID(ctx, grant.UserID)
if err != nil {
if user_model.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 := &oauth2.OIDCToken{
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(expirationDate.AsTime()),
Issuer: setting.AppURL,
Audience: []string{app.ClientID},
Subject: fmt.Sprint(grant.UserID),
},
Nonce: grant.Nonce,
}
if grant.ScopeContains("profile") {
idToken.Name = user.GetDisplayName()
idToken.PreferredUsername = user.Name
idToken.Profile = user.HTMLURL()
idToken.Picture = user.AvatarLink(ctx)
idToken.Website = user.Website
idToken.Locale = user.Language
idToken.UpdatedAt = user.UpdatedUnix
}
if grant.ScopeContains("email") {
idToken.Email = user.Email
idToken.EmailVerified = user.IsActive
}
if grant.ScopeContains("groups") {
groups, err := getOAuthGroupsForUser(ctx, user)
if err != nil {
log.Error("Error getting groups: %v", err)
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "server error",
}
}
idToken.Groups = groups
}
signedIDToken, err = idToken.SignToken(clientKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
}
return &AccessTokenResponse{
AccessToken: signedAccessToken,
TokenType: TokenTypeBearer,
ExpiresIn: setting.OAuth2.AccessTokenExpirationTime,
RefreshToken: signedRefreshToken,
IDToken: signedIDToken,
}, nil
}
type userInfoResponse struct {
Sub string `json:"sub"`
Name string `json:"name"`
Username string `json:"preferred_username"`
Email string `json:"email"`
Picture string `json:"picture"`
Groups []string `json:"groups"`
}
// InfoOAuth manages request for userinfo endpoint
func InfoOAuth(ctx *context.Context) {
if ctx.Doer == nil || ctx.Data["AuthedMethod"] != (&auth_service.OAuth2{}).Name() {
ctx.Resp.Header().Set("WWW-Authenticate", `Bearer realm=""`)
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
return
}
response := &userInfoResponse{
Sub: fmt.Sprint(ctx.Doer.ID),
Name: ctx.Doer.FullName,
Username: ctx.Doer.Name,
Email: ctx.Doer.Email,
Picture: ctx.Doer.AvatarLink(ctx),
}
groups, err := getOAuthGroupsForUser(ctx, ctx.Doer)
if err != nil {
ctx.ServerError("Oauth groups for user", err)
return
}
response.Groups = groups
ctx.JSON(http.StatusOK, response)
}
// returns a list of "org" and "org:team" strings,
// that the given user is a part of.
func getOAuthGroupsForUser(ctx go_context.Context, user *user_model.User) ([]string, error) {
orgs, err := org_model.GetUserOrgsList(ctx, user)
if err != nil {
return nil, fmt.Errorf("GetUserOrgList: %w", err)
}
var groups []string
for _, org := range orgs {
groups = append(groups, org.Name)
teams, err := org.LoadTeams(ctx)
if err != nil {
return nil, fmt.Errorf("LoadTeams: %w", err)
}
for _, team := range teams {
if team.IsMember(ctx, user.ID) {
groups = append(groups, org.Name+":"+team.LowerName)
}
}
}
return groups, nil
}
func parseBasicAuth(ctx *context.Context) (username, password string, err error) {
authHeader := ctx.Req.Header.Get("Authorization")
if authType, authData, ok := strings.Cut(authHeader, " "); ok && strings.EqualFold(authType, "Basic") {
return base.BasicAuthDecode(authData)
}
return "", "", errors.New("invalid basic authentication")
}
// IntrospectOAuth introspects an oauth token
func IntrospectOAuth(ctx *context.Context) {
clientIDValid := false
if clientID, clientSecret, err := parseBasicAuth(ctx); err == nil {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, clientID)
if err != nil && !auth.IsErrOauthClientIDInvalid(err) {
// this is likely a database error; log it and respond without details
log.Error("Error retrieving client_id: %v", err)
ctx.Error(http.StatusInternalServerError)
return
}
clientIDValid = err == nil && app.ValidateClientSecret([]byte(clientSecret))
}
if !clientIDValid {
ctx.Resp.Header().Set("WWW-Authenticate", `Basic realm=""`)
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
return
}
var response struct {
Active bool `json:"active"`
Scope string `json:"scope,omitempty"`
Username string `json:"username,omitempty"`
jwt.RegisteredClaims
}
form := web.GetForm(ctx).(*forms.IntrospectTokenForm)
token, err := oauth2.ParseToken(form.Token, oauth2.DefaultSigningKey)
if err == nil {
grant, err := auth.GetOAuth2GrantByID(ctx, token.GrantID)
if err == nil && grant != nil {
app, err := auth.GetOAuth2ApplicationByID(ctx, grant.ApplicationID)
if err == nil && app != nil {
response.Active = true
response.Scope = grant.Scope
response.Issuer = setting.AppURL
response.Audience = []string{app.ClientID}
response.Subject = fmt.Sprint(grant.UserID)
}
if user, err := user_model.GetUserByID(ctx, grant.UserID); err == nil {
response.Username = user.Name
}
}
}
ctx.JSON(http.StatusOK, response)
}
// AuthorizeOAuth manages authorize requests
func AuthorizeOAuth(ctx *context.Context) {
form := web.GetForm(ctx).(*forms.AuthorizationForm)
errs := binding.Errors{}
errs = form.Validate(ctx.Req, errs)
if len(errs) > 0 {
errstring := ""
for _, e := range errs {
errstring += e.Error() + "\n"
}
ctx.ServerError("AuthorizeOAuth: Validate: ", fmt.Errorf("errors occurred during validation: %s", errstring))
return
}
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
if auth.IsErrOauthClientIDInvalid(err) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeUnauthorizedClient,
ErrorDescription: "Client ID not registered",
State: form.State,
}, "")
return
}
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
return
}
var user *user_model.User
if app.UID != 0 {
user, err = user_model.GetUserByID(ctx, app.UID)
if err != nil {
ctx.ServerError("GetUserByID", err)
return
}
}
if !app.ContainsRedirectURI(form.RedirectURI) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "Unregistered Redirect URI",
State: form.State,
}, "")
return
}
if form.ResponseType != "code" {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeUnsupportedResponseType,
ErrorDescription: "Only code response type is supported.",
State: form.State,
}, form.RedirectURI)
return
}
// pkce support
switch form.CodeChallengeMethod {
case "S256":
case "plain":
if err := ctx.Session.Set("CodeChallengeMethod", form.CodeChallengeMethod); err != nil {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "cannot set code challenge method",
State: form.State,
}, form.RedirectURI)
return
}
if err := ctx.Session.Set("CodeChallengeMethod", form.CodeChallenge); err != nil {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "cannot set code challenge",
State: form.State,
}, form.RedirectURI)
return
}
// Here we're just going to try to release the session early
if err := ctx.Session.Release(); err != nil {
// we'll tolerate errors here as they *should* get saved elsewhere
log.Error("Unable to save changes to the session: %v", err)
}
case "":
// "Authorization servers SHOULD reject authorization requests from native apps that don't use PKCE by returning an error message"
// https://datatracker.ietf.org/doc/html/rfc8252#section-8.1
if !app.ConfidentialClient {
// "the authorization endpoint MUST return the authorization error response with the "error" value set to "invalid_request""
// https://datatracker.ietf.org/doc/html/rfc7636#section-4.4.1
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "PKCE is required for public clients",
State: form.State,
}, form.RedirectURI)
return
}
default:
// "If the server supporting PKCE does not support the requested transformation, the authorization endpoint MUST return the authorization error response with "error" value set to "invalid_request"."
// https://www.rfc-editor.org/rfc/rfc7636#section-4.4.1
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "unsupported code challenge method",
State: form.State,
}, form.RedirectURI)
return
}
grant, err := app.GetGrantByUserID(ctx, ctx.Doer.ID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
// Redirect if user already granted access and the application is confidential or trusted otherwise
// I.e. always require authorization for untrusted public clients as recommended by RFC 6749 Section 10.2
if (app.ConfidentialClient || app.SkipSecondaryAuthorization) && grant != nil {
code, err := grant.GenerateNewAuthorizationCode(ctx, form.RedirectURI, form.CodeChallenge, form.CodeChallengeMethod)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
redirect, err := code.GenerateRedirectURI(form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
// Update nonce to reflect the new session
if len(form.Nonce) > 0 {
err := grant.SetNonce(ctx, form.Nonce)
if err != nil {
log.Error("Unable to update nonce: %v", err)
}
}
ctx.Redirect(redirect.String())
return
}
// show authorize page to grant access
ctx.Data["Application"] = app
ctx.Data["RedirectURI"] = form.RedirectURI
ctx.Data["State"] = form.State
ctx.Data["Scope"] = form.Scope
ctx.Data["Nonce"] = form.Nonce
if user != nil {
ctx.Data["ApplicationCreatorLinkHTML"] = template.HTML(fmt.Sprintf(`<a href="%s">@%s</a>`, html.EscapeString(user.HomeLink()), html.EscapeString(user.Name)))
} else {
ctx.Data["ApplicationCreatorLinkHTML"] = template.HTML(fmt.Sprintf(`<a href="%s">%s</a>`, html.EscapeString(setting.AppSubURL+"/"), html.EscapeString(setting.AppName)))
}
ctx.Data["ApplicationRedirectDomainHTML"] = template.HTML("<strong>" + html.EscapeString(form.RedirectURI) + "</strong>")
// TODO document SESSION <=> FORM
err = ctx.Session.Set("client_id", app.ClientID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
err = ctx.Session.Set("redirect_uri", form.RedirectURI)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
err = ctx.Session.Set("state", form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
// Here we're just going to try to release the session early
if err := ctx.Session.Release(); err != nil {
// we'll tolerate errors here as they *should* get saved elsewhere
log.Error("Unable to save changes to the session: %v", err)
}
ctx.HTML(http.StatusOK, tplGrantAccess)
}
// GrantApplicationOAuth manages the post request submitted when a user grants access to an application
func GrantApplicationOAuth(ctx *context.Context) {
form := web.GetForm(ctx).(*forms.GrantApplicationForm)
if ctx.Session.Get("client_id") != form.ClientID || ctx.Session.Get("state") != form.State ||
ctx.Session.Get("redirect_uri") != form.RedirectURI {
ctx.Error(http.StatusBadRequest)
return
}
if !form.Granted {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "the request is denied",
ErrorCode: ErrorCodeAccessDenied,
}, form.RedirectURI)
return
}
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
return
}
grant, err := app.GetGrantByUserID(ctx, ctx.Doer.ID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
if grant == nil {
grant, err = app.CreateGrant(ctx, ctx.Doer.ID, form.Scope)
if err != nil {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "cannot create grant for user",
ErrorCode: ErrorCodeServerError,
}, form.RedirectURI)
return
}
} else if grant.Scope != form.Scope {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "a grant exists with different scope",
ErrorCode: ErrorCodeServerError,
}, form.RedirectURI)
return
}
if len(form.Nonce) > 0 {
err := grant.SetNonce(ctx, form.Nonce)
if err != nil {
log.Error("Unable to update nonce: %v", err)
}
}
var codeChallenge, codeChallengeMethod string
codeChallenge, _ = ctx.Session.Get("CodeChallenge").(string)
codeChallengeMethod, _ = ctx.Session.Get("CodeChallengeMethod").(string)
code, err := grant.GenerateNewAuthorizationCode(ctx, form.RedirectURI, codeChallenge, codeChallengeMethod)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
redirect, err := code.GenerateRedirectURI(form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
ctx.Redirect(redirect.String(), http.StatusSeeOther)
}
// OIDCWellKnown generates JSON so OIDC clients know Gitea's capabilities
func OIDCWellKnown(ctx *context.Context) {
ctx.Data["SigningKey"] = oauth2.DefaultSigningKey
ctx.JSONTemplate("user/auth/oidc_wellknown")
}
// OIDCKeys generates the JSON Web Key Set
func OIDCKeys(ctx *context.Context) {
jwk, err := oauth2.DefaultSigningKey.ToJWK()
if err != nil {
log.Error("Error converting signing key to JWK: %v", err)
ctx.Error(http.StatusInternalServerError)
return
}
jwk["use"] = "sig"
jwks := map[string][]map[string]string{
"keys": {
jwk,
},
}
ctx.Resp.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(ctx.Resp)
if err := enc.Encode(jwks); err != nil {
log.Error("Failed to encode representation as json. Error: %v", err)
}
}
// AccessTokenOAuth manages all access token requests by the client
func AccessTokenOAuth(ctx *context.Context) {
form := *web.GetForm(ctx).(*forms.AccessTokenForm)
// if there is no ClientID or ClientSecret in the request body, fill these fields by the Authorization header and ensure the provided field matches the Authorization header
if form.ClientID == "" || form.ClientSecret == "" {
authHeader := ctx.Req.Header.Get("Authorization")
if authType, authData, ok := strings.Cut(authHeader, " "); ok && strings.EqualFold(authType, "Basic") {
clientID, clientSecret, err := base.BasicAuthDecode(authData)
if err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot parse basic auth header",
})
return
}
// validate that any fields present in the form match the Basic auth header
if form.ClientID != "" && form.ClientID != clientID {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "client_id in request body inconsistent with Authorization header",
})
return
}
form.ClientID = clientID
if form.ClientSecret != "" && form.ClientSecret != clientSecret {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "client_secret in request body inconsistent with Authorization header",
})
return
}
form.ClientSecret = clientSecret
}
}
serverKey := oauth2.DefaultSigningKey
clientKey := serverKey
if serverKey.IsSymmetric() {
var err error
clientKey, err = oauth2.CreateJWTSigningKey(serverKey.SigningMethod().Alg(), []byte(form.ClientSecret))
if err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "Error creating signing key",
})
return
}
}
switch form.GrantType {
case "refresh_token":
handleRefreshToken(ctx, form, serverKey, clientKey)
case "authorization_code":
handleAuthorizationCode(ctx, form, serverKey, clientKey)
default:
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnsupportedGrantType,
ErrorDescription: "Only refresh_token or authorization_code grant type is supported",
})
}
}
func handleRefreshToken(ctx *context.Context, form forms.AccessTokenForm, serverKey, clientKey oauth2.JWTSigningKey) {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidClient,
ErrorDescription: fmt.Sprintf("cannot load client with client id: %q", form.ClientID),
})
return
}
// "The authorization server MUST ... require client authentication for confidential clients"
// https://datatracker.ietf.org/doc/html/rfc6749#section-6
if app.ConfidentialClient && !app.ValidateClientSecret([]byte(form.ClientSecret)) {
errorDescription := "invalid client secret"
if form.ClientSecret == "" {
errorDescription = "invalid empty client secret"
}
// "invalid_client ... Client authentication failed"
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidClient,
ErrorDescription: errorDescription,
})
return
}
token, err := oauth2.ParseToken(form.RefreshToken, serverKey)
if err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "unable to parse refresh token",
})
return
}
// get grant before increasing counter
grant, err := auth.GetOAuth2GrantByID(ctx, token.GrantID)
if err != nil || grant == nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "grant does not exist",
})
return
}
// check if token got already used
if setting.OAuth2.InvalidateRefreshTokens && (grant.Counter != token.Counter || token.Counter == 0) {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "token was already used",
})
log.Warn("A client tried to use a refresh token for grant_id = %d was used twice!", grant.ID)
return
}
accessToken, tokenErr := newAccessTokenResponse(ctx, grant, serverKey, clientKey)
if tokenErr != nil {
handleAccessTokenError(ctx, *tokenErr)
return
}
ctx.JSON(http.StatusOK, accessToken)
}
func handleAuthorizationCode(ctx *context.Context, form forms.AccessTokenForm, serverKey, clientKey oauth2.JWTSigningKey) {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidClient,
ErrorDescription: fmt.Sprintf("cannot load client with client id: '%s'", form.ClientID),
})
return
}
if app.ConfidentialClient && !app.ValidateClientSecret([]byte(form.ClientSecret)) {
errorDescription := "invalid client secret"
if form.ClientSecret == "" {
errorDescription = "invalid empty client secret"
}
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: errorDescription,
})
return
}
if form.RedirectURI != "" && !app.ContainsRedirectURI(form.RedirectURI) {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "unexpected redirect URI",
})
return
}
authorizationCode, err := auth.GetOAuth2AuthorizationByCode(ctx, form.Code)
if err != nil || authorizationCode == nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "client is not authorized",
})
return
}
// check if code verifier authorizes the client, PKCE support
if !authorizationCode.ValidateCodeChallenge(form.CodeVerifier) {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "failed PKCE code challenge",
})
return
}
// check if granted for this application
if authorizationCode.Grant.ApplicationID != app.ID {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "invalid grant",
})
return
}
// remove token from database to deny duplicate usage
if err := authorizationCode.Invalidate(ctx); err != nil {
handleAccessTokenError(ctx, AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot proceed your request",
})
}
resp, tokenErr := newAccessTokenResponse(ctx, authorizationCode.Grant, serverKey, clientKey)
if tokenErr != nil {
handleAccessTokenError(ctx, *tokenErr)
return
}
// send successful response
ctx.JSON(http.StatusOK, resp)
}
func handleAccessTokenError(ctx *context.Context, acErr AccessTokenError) {
ctx.JSON(http.StatusBadRequest, acErr)
}
func handleServerError(ctx *context.Context, state, redirectURI string) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "A server error occurred",
State: state,
}, redirectURI)
}
func handleAuthorizeError(ctx *context.Context, authErr AuthorizeError, redirectURI string) {
if redirectURI == "" {
log.Warn("Authorization failed: %v", authErr.ErrorDescription)
ctx.Data["Error"] = authErr
ctx.HTML(http.StatusBadRequest, tplGrantError)
return
}
redirect, err := url.Parse(redirectURI)
if err != nil {
ctx.ServerError("url.Parse", err)
return
}
q := redirect.Query()
q.Set("error", string(authErr.ErrorCode))
q.Set("error_description", authErr.ErrorDescription)
q.Set("state", authErr.State)
redirect.RawQuery = q.Encode()
ctx.Redirect(redirect.String(), http.StatusSeeOther)
}
// SignInOAuth handles the OAuth2 login buttons // SignInOAuth handles the OAuth2 login buttons
func SignInOAuth(ctx *context.Context) { func SignInOAuth(ctx *context.Context) {
provider := ctx.PathParam(":provider") provider := ctx.PathParam(":provider")

666
routers/web/auth/oauth2_provider.go Normal file
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@ -0,0 +1,666 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package auth
import (
"errors"
"fmt"
"html"
"html/template"
"net/http"
"net/url"
"strings"
"code.gitea.io/gitea/models/auth"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/web"
auth_service "code.gitea.io/gitea/services/auth"
"code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/forms"
"code.gitea.io/gitea/services/oauth2_provider"
"gitea.com/go-chi/binding"
jwt "github.com/golang-jwt/jwt/v5"
)
const (
tplGrantAccess base.TplName = "user/auth/grant"
tplGrantError base.TplName = "user/auth/grant_error"
)
// TODO move error and responses to SDK or models
// AuthorizeErrorCode represents an error code specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2.1
type AuthorizeErrorCode string
const (
// ErrorCodeInvalidRequest represents the according error in RFC 6749
ErrorCodeInvalidRequest AuthorizeErrorCode = "invalid_request"
// ErrorCodeUnauthorizedClient represents the according error in RFC 6749
ErrorCodeUnauthorizedClient AuthorizeErrorCode = "unauthorized_client"
// ErrorCodeAccessDenied represents the according error in RFC 6749
ErrorCodeAccessDenied AuthorizeErrorCode = "access_denied"
// ErrorCodeUnsupportedResponseType represents the according error in RFC 6749
ErrorCodeUnsupportedResponseType AuthorizeErrorCode = "unsupported_response_type"
// ErrorCodeInvalidScope represents the according error in RFC 6749
ErrorCodeInvalidScope AuthorizeErrorCode = "invalid_scope"
// ErrorCodeServerError represents the according error in RFC 6749
ErrorCodeServerError AuthorizeErrorCode = "server_error"
// ErrorCodeTemporaryUnavailable represents the according error in RFC 6749
ErrorCodeTemporaryUnavailable AuthorizeErrorCode = "temporarily_unavailable"
)
// AuthorizeError represents an error type specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2.1
type AuthorizeError struct {
ErrorCode AuthorizeErrorCode `json:"error" form:"error"`
ErrorDescription string
State string
}
// Error returns the error message
func (err AuthorizeError) Error() string {
return fmt.Sprintf("%s: %s", err.ErrorCode, err.ErrorDescription)
}
// errCallback represents a oauth2 callback error
type errCallback struct {
Code string
Description string
}
func (err errCallback) Error() string {
return err.Description
}
type userInfoResponse struct {
Sub string `json:"sub"`
Name string `json:"name"`
Username string `json:"preferred_username"`
Email string `json:"email"`
Picture string `json:"picture"`
Groups []string `json:"groups"`
}
// InfoOAuth manages request for userinfo endpoint
func InfoOAuth(ctx *context.Context) {
if ctx.Doer == nil || ctx.Data["AuthedMethod"] != (&auth_service.OAuth2{}).Name() {
ctx.Resp.Header().Set("WWW-Authenticate", `Bearer realm=""`)
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
return
}
response := &userInfoResponse{
Sub: fmt.Sprint(ctx.Doer.ID),
Name: ctx.Doer.FullName,
Username: ctx.Doer.Name,
Email: ctx.Doer.Email,
Picture: ctx.Doer.AvatarLink(ctx),
}
groups, err := oauth2_provider.GetOAuthGroupsForUser(ctx, ctx.Doer)
if err != nil {
ctx.ServerError("Oauth groups for user", err)
return
}
response.Groups = groups
ctx.JSON(http.StatusOK, response)
}
func parseBasicAuth(ctx *context.Context) (username, password string, err error) {
authHeader := ctx.Req.Header.Get("Authorization")
if authType, authData, ok := strings.Cut(authHeader, " "); ok && strings.EqualFold(authType, "Basic") {
return base.BasicAuthDecode(authData)
}
return "", "", errors.New("invalid basic authentication")
}
// IntrospectOAuth introspects an oauth token
func IntrospectOAuth(ctx *context.Context) {
clientIDValid := false
if clientID, clientSecret, err := parseBasicAuth(ctx); err == nil {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, clientID)
if err != nil && !auth.IsErrOauthClientIDInvalid(err) {
// this is likely a database error; log it and respond without details
log.Error("Error retrieving client_id: %v", err)
ctx.Error(http.StatusInternalServerError)
return
}
clientIDValid = err == nil && app.ValidateClientSecret([]byte(clientSecret))
}
if !clientIDValid {
ctx.Resp.Header().Set("WWW-Authenticate", `Basic realm=""`)
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
return
}
var response struct {
Active bool `json:"active"`
Scope string `json:"scope,omitempty"`
Username string `json:"username,omitempty"`
jwt.RegisteredClaims
}
form := web.GetForm(ctx).(*forms.IntrospectTokenForm)
token, err := oauth2_provider.ParseToken(form.Token, oauth2_provider.DefaultSigningKey)
if err == nil {
grant, err := auth.GetOAuth2GrantByID(ctx, token.GrantID)
if err == nil && grant != nil {
app, err := auth.GetOAuth2ApplicationByID(ctx, grant.ApplicationID)
if err == nil && app != nil {
response.Active = true
response.Scope = grant.Scope
response.Issuer = setting.AppURL
response.Audience = []string{app.ClientID}
response.Subject = fmt.Sprint(grant.UserID)
}
if user, err := user_model.GetUserByID(ctx, grant.UserID); err == nil {
response.Username = user.Name
}
}
}
ctx.JSON(http.StatusOK, response)
}
// AuthorizeOAuth manages authorize requests
func AuthorizeOAuth(ctx *context.Context) {
form := web.GetForm(ctx).(*forms.AuthorizationForm)
errs := binding.Errors{}
errs = form.Validate(ctx.Req, errs)
if len(errs) > 0 {
errstring := ""
for _, e := range errs {
errstring += e.Error() + "\n"
}
ctx.ServerError("AuthorizeOAuth: Validate: ", fmt.Errorf("errors occurred during validation: %s", errstring))
return
}
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
if auth.IsErrOauthClientIDInvalid(err) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeUnauthorizedClient,
ErrorDescription: "Client ID not registered",
State: form.State,
}, "")
return
}
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
return
}
var user *user_model.User
if app.UID != 0 {
user, err = user_model.GetUserByID(ctx, app.UID)
if err != nil {
ctx.ServerError("GetUserByID", err)
return
}
}
if !app.ContainsRedirectURI(form.RedirectURI) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "Unregistered Redirect URI",
State: form.State,
}, "")
return
}
if form.ResponseType != "code" {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeUnsupportedResponseType,
ErrorDescription: "Only code response type is supported.",
State: form.State,
}, form.RedirectURI)
return
}
// pkce support
switch form.CodeChallengeMethod {
case "S256":
case "plain":
if err := ctx.Session.Set("CodeChallengeMethod", form.CodeChallengeMethod); err != nil {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "cannot set code challenge method",
State: form.State,
}, form.RedirectURI)
return
}
if err := ctx.Session.Set("CodeChallengeMethod", form.CodeChallenge); err != nil {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "cannot set code challenge",
State: form.State,
}, form.RedirectURI)
return
}
// Here we're just going to try to release the session early
if err := ctx.Session.Release(); err != nil {
// we'll tolerate errors here as they *should* get saved elsewhere
log.Error("Unable to save changes to the session: %v", err)
}
case "":
// "Authorization servers SHOULD reject authorization requests from native apps that don't use PKCE by returning an error message"
// https://datatracker.ietf.org/doc/html/rfc8252#section-8.1
if !app.ConfidentialClient {
// "the authorization endpoint MUST return the authorization error response with the "error" value set to "invalid_request""
// https://datatracker.ietf.org/doc/html/rfc7636#section-4.4.1
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "PKCE is required for public clients",
State: form.State,
}, form.RedirectURI)
return
}
default:
// "If the server supporting PKCE does not support the requested transformation, the authorization endpoint MUST return the authorization error response with "error" value set to "invalid_request"."
// https://www.rfc-editor.org/rfc/rfc7636#section-4.4.1
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeInvalidRequest,
ErrorDescription: "unsupported code challenge method",
State: form.State,
}, form.RedirectURI)
return
}
grant, err := app.GetGrantByUserID(ctx, ctx.Doer.ID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
// Redirect if user already granted access and the application is confidential or trusted otherwise
// I.e. always require authorization for untrusted public clients as recommended by RFC 6749 Section 10.2
if (app.ConfidentialClient || app.SkipSecondaryAuthorization) && grant != nil {
code, err := grant.GenerateNewAuthorizationCode(ctx, form.RedirectURI, form.CodeChallenge, form.CodeChallengeMethod)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
redirect, err := code.GenerateRedirectURI(form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
// Update nonce to reflect the new session
if len(form.Nonce) > 0 {
err := grant.SetNonce(ctx, form.Nonce)
if err != nil {
log.Error("Unable to update nonce: %v", err)
}
}
ctx.Redirect(redirect.String())
return
}
// show authorize page to grant access
ctx.Data["Application"] = app
ctx.Data["RedirectURI"] = form.RedirectURI
ctx.Data["State"] = form.State
ctx.Data["Scope"] = form.Scope
ctx.Data["Nonce"] = form.Nonce
if user != nil {
ctx.Data["ApplicationCreatorLinkHTML"] = template.HTML(fmt.Sprintf(`<a href="%s">@%s</a>`, html.EscapeString(user.HomeLink()), html.EscapeString(user.Name)))
} else {
ctx.Data["ApplicationCreatorLinkHTML"] = template.HTML(fmt.Sprintf(`<a href="%s">%s</a>`, html.EscapeString(setting.AppSubURL+"/"), html.EscapeString(setting.AppName)))
}
ctx.Data["ApplicationRedirectDomainHTML"] = template.HTML("<strong>" + html.EscapeString(form.RedirectURI) + "</strong>")
// TODO document SESSION <=> FORM
err = ctx.Session.Set("client_id", app.ClientID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
err = ctx.Session.Set("redirect_uri", form.RedirectURI)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
err = ctx.Session.Set("state", form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
log.Error(err.Error())
return
}
// Here we're just going to try to release the session early
if err := ctx.Session.Release(); err != nil {
// we'll tolerate errors here as they *should* get saved elsewhere
log.Error("Unable to save changes to the session: %v", err)
}
ctx.HTML(http.StatusOK, tplGrantAccess)
}
// GrantApplicationOAuth manages the post request submitted when a user grants access to an application
func GrantApplicationOAuth(ctx *context.Context) {
form := web.GetForm(ctx).(*forms.GrantApplicationForm)
if ctx.Session.Get("client_id") != form.ClientID || ctx.Session.Get("state") != form.State ||
ctx.Session.Get("redirect_uri") != form.RedirectURI {
ctx.Error(http.StatusBadRequest)
return
}
if !form.Granted {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "the request is denied",
ErrorCode: ErrorCodeAccessDenied,
}, form.RedirectURI)
return
}
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
return
}
grant, err := app.GetGrantByUserID(ctx, ctx.Doer.ID)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
if grant == nil {
grant, err = app.CreateGrant(ctx, ctx.Doer.ID, form.Scope)
if err != nil {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "cannot create grant for user",
ErrorCode: ErrorCodeServerError,
}, form.RedirectURI)
return
}
} else if grant.Scope != form.Scope {
handleAuthorizeError(ctx, AuthorizeError{
State: form.State,
ErrorDescription: "a grant exists with different scope",
ErrorCode: ErrorCodeServerError,
}, form.RedirectURI)
return
}
if len(form.Nonce) > 0 {
err := grant.SetNonce(ctx, form.Nonce)
if err != nil {
log.Error("Unable to update nonce: %v", err)
}
}
var codeChallenge, codeChallengeMethod string
codeChallenge, _ = ctx.Session.Get("CodeChallenge").(string)
codeChallengeMethod, _ = ctx.Session.Get("CodeChallengeMethod").(string)
code, err := grant.GenerateNewAuthorizationCode(ctx, form.RedirectURI, codeChallenge, codeChallengeMethod)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
redirect, err := code.GenerateRedirectURI(form.State)
if err != nil {
handleServerError(ctx, form.State, form.RedirectURI)
return
}
ctx.Redirect(redirect.String(), http.StatusSeeOther)
}
// OIDCWellKnown generates JSON so OIDC clients know Gitea's capabilities
func OIDCWellKnown(ctx *context.Context) {
ctx.Data["SigningKey"] = oauth2_provider.DefaultSigningKey
ctx.JSONTemplate("user/auth/oidc_wellknown")
}
// OIDCKeys generates the JSON Web Key Set
func OIDCKeys(ctx *context.Context) {
jwk, err := oauth2_provider.DefaultSigningKey.ToJWK()
if err != nil {
log.Error("Error converting signing key to JWK: %v", err)
ctx.Error(http.StatusInternalServerError)
return
}
jwk["use"] = "sig"
jwks := map[string][]map[string]string{
"keys": {
jwk,
},
}
ctx.Resp.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(ctx.Resp)
if err := enc.Encode(jwks); err != nil {
log.Error("Failed to encode representation as json. Error: %v", err)
}
}
// AccessTokenOAuth manages all access token requests by the client
func AccessTokenOAuth(ctx *context.Context) {
form := *web.GetForm(ctx).(*forms.AccessTokenForm)
// if there is no ClientID or ClientSecret in the request body, fill these fields by the Authorization header and ensure the provided field matches the Authorization header
if form.ClientID == "" || form.ClientSecret == "" {
authHeader := ctx.Req.Header.Get("Authorization")
if authType, authData, ok := strings.Cut(authHeader, " "); ok && strings.EqualFold(authType, "Basic") {
clientID, clientSecret, err := base.BasicAuthDecode(authData)
if err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot parse basic auth header",
})
return
}
// validate that any fields present in the form match the Basic auth header
if form.ClientID != "" && form.ClientID != clientID {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "client_id in request body inconsistent with Authorization header",
})
return
}
form.ClientID = clientID
if form.ClientSecret != "" && form.ClientSecret != clientSecret {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "client_secret in request body inconsistent with Authorization header",
})
return
}
form.ClientSecret = clientSecret
}
}
serverKey := oauth2_provider.DefaultSigningKey
clientKey := serverKey
if serverKey.IsSymmetric() {
var err error
clientKey, err = oauth2_provider.CreateJWTSigningKey(serverKey.SigningMethod().Alg(), []byte(form.ClientSecret))
if err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "Error creating signing key",
})
return
}
}
switch form.GrantType {
case "refresh_token":
handleRefreshToken(ctx, form, serverKey, clientKey)
case "authorization_code":
handleAuthorizationCode(ctx, form, serverKey, clientKey)
default:
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnsupportedGrantType,
ErrorDescription: "Only refresh_token or authorization_code grant type is supported",
})
}
}
func handleRefreshToken(ctx *context.Context, form forms.AccessTokenForm, serverKey, clientKey oauth2_provider.JWTSigningKey) {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidClient,
ErrorDescription: fmt.Sprintf("cannot load client with client id: %q", form.ClientID),
})
return
}
// "The authorization server MUST ... require client authentication for confidential clients"
// https://datatracker.ietf.org/doc/html/rfc6749#section-6
if app.ConfidentialClient && !app.ValidateClientSecret([]byte(form.ClientSecret)) {
errorDescription := "invalid client secret"
if form.ClientSecret == "" {
errorDescription = "invalid empty client secret"
}
// "invalid_client ... Client authentication failed"
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidClient,
ErrorDescription: errorDescription,
})
return
}
token, err := oauth2_provider.ParseToken(form.RefreshToken, serverKey)
if err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "unable to parse refresh token",
})
return
}
// get grant before increasing counter
grant, err := auth.GetOAuth2GrantByID(ctx, token.GrantID)
if err != nil || grant == nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "grant does not exist",
})
return
}
// check if token got already used
if setting.OAuth2.InvalidateRefreshTokens && (grant.Counter != token.Counter || token.Counter == 0) {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "token was already used",
})
log.Warn("A client tried to use a refresh token for grant_id = %d was used twice!", grant.ID)
return
}
accessToken, tokenErr := oauth2_provider.NewAccessTokenResponse(ctx, grant, serverKey, clientKey)
if tokenErr != nil {
handleAccessTokenError(ctx, *tokenErr)
return
}
ctx.JSON(http.StatusOK, accessToken)
}
func handleAuthorizationCode(ctx *context.Context, form forms.AccessTokenForm, serverKey, clientKey oauth2_provider.JWTSigningKey) {
app, err := auth.GetOAuth2ApplicationByClientID(ctx, form.ClientID)
if err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidClient,
ErrorDescription: fmt.Sprintf("cannot load client with client id: '%s'", form.ClientID),
})
return
}
if app.ConfidentialClient && !app.ValidateClientSecret([]byte(form.ClientSecret)) {
errorDescription := "invalid client secret"
if form.ClientSecret == "" {
errorDescription = "invalid empty client secret"
}
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: errorDescription,
})
return
}
if form.RedirectURI != "" && !app.ContainsRedirectURI(form.RedirectURI) {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "unexpected redirect URI",
})
return
}
authorizationCode, err := auth.GetOAuth2AuthorizationByCode(ctx, form.Code)
if err != nil || authorizationCode == nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "client is not authorized",
})
return
}
// check if code verifier authorizes the client, PKCE support
if !authorizationCode.ValidateCodeChallenge(form.CodeVerifier) {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeUnauthorizedClient,
ErrorDescription: "failed PKCE code challenge",
})
return
}
// check if granted for this application
if authorizationCode.Grant.ApplicationID != app.ID {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "invalid grant",
})
return
}
// remove token from database to deny duplicate usage
if err := authorizationCode.Invalidate(ctx); err != nil {
handleAccessTokenError(ctx, oauth2_provider.AccessTokenError{
ErrorCode: oauth2_provider.AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot proceed your request",
})
}
resp, tokenErr := oauth2_provider.NewAccessTokenResponse(ctx, authorizationCode.Grant, serverKey, clientKey)
if tokenErr != nil {
handleAccessTokenError(ctx, *tokenErr)
return
}
// send successful response
ctx.JSON(http.StatusOK, resp)
}
func handleAccessTokenError(ctx *context.Context, acErr oauth2_provider.AccessTokenError) {
ctx.JSON(http.StatusBadRequest, acErr)
}
func handleServerError(ctx *context.Context, state, redirectURI string) {
handleAuthorizeError(ctx, AuthorizeError{
ErrorCode: ErrorCodeServerError,
ErrorDescription: "A server error occurred",
State: state,
}, redirectURI)
}
func handleAuthorizeError(ctx *context.Context, authErr AuthorizeError, redirectURI string) {
if redirectURI == "" {
log.Warn("Authorization failed: %v", authErr.ErrorDescription)
ctx.Data["Error"] = authErr
ctx.HTML(http.StatusBadRequest, tplGrantError)
return
}
redirect, err := url.Parse(redirectURI)
if err != nil {
ctx.ServerError("url.Parse", err)
return
}
q := redirect.Query()
q.Set("error", string(authErr.ErrorCode))
q.Set("error_description", authErr.ErrorDescription)
q.Set("state", authErr.State)
redirect.RawQuery = q.Encode()
ctx.Redirect(redirect.String(), http.StatusSeeOther)
}

12
routers/web/auth/oauth_test.go
View File

@ -11,22 +11,22 @@ import (
"code.gitea.io/gitea/models/unittest" "code.gitea.io/gitea/models/unittest"
user_model "code.gitea.io/gitea/models/user" user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/setting" "code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/services/auth/source/oauth2" "code.gitea.io/gitea/services/oauth2_provider"
"github.com/golang-jwt/jwt/v5" "github.com/golang-jwt/jwt/v5"
"github.com/stretchr/testify/assert" "github.com/stretchr/testify/assert"
) )
func createAndParseToken(t *testing.T, grant *auth.OAuth2Grant) *oauth2.OIDCToken { func createAndParseToken(t *testing.T, grant *auth.OAuth2Grant) *oauth2_provider.OIDCToken {
signingKey, err := oauth2.CreateJWTSigningKey("HS256", make([]byte, 32)) signingKey, err := oauth2_provider.CreateJWTSigningKey("HS256", make([]byte, 32))
assert.NoError(t, err) assert.NoError(t, err)
assert.NotNil(t, signingKey) assert.NotNil(t, signingKey)
response, terr := newAccessTokenResponse(db.DefaultContext, grant, signingKey, signingKey) response, terr := oauth2_provider.NewAccessTokenResponse(db.DefaultContext, grant, signingKey, signingKey)
assert.Nil(t, terr) assert.Nil(t, terr)
assert.NotNil(t, response) assert.NotNil(t, response)
parsedToken, err := jwt.ParseWithClaims(response.IDToken, &oauth2.OIDCToken{}, func(token *jwt.Token) (any, error) { parsedToken, err := jwt.ParseWithClaims(response.IDToken, &oauth2_provider.OIDCToken{}, func(token *jwt.Token) (any, error) {
assert.NotNil(t, token.Method) assert.NotNil(t, token.Method)
assert.Equal(t, signingKey.SigningMethod().Alg(), token.Method.Alg()) assert.Equal(t, signingKey.SigningMethod().Alg(), token.Method.Alg())
return signingKey.VerifyKey(), nil return signingKey.VerifyKey(), nil
@ -34,7 +34,7 @@ func createAndParseToken(t *testing.T, grant *auth.OAuth2Grant) *oauth2.OIDCToke
assert.NoError(t, err) assert.NoError(t, err)
assert.True(t, parsedToken.Valid) assert.True(t, parsedToken.Valid)
oidcToken, ok := parsedToken.Claims.(*oauth2.OIDCToken) oidcToken, ok := parsedToken.Claims.(*oauth2_provider.OIDCToken)
assert.True(t, ok) assert.True(t, ok)
assert.NotNil(t, oidcToken) assert.NotNil(t, oidcToken)

6
services/auth/oauth2.go
View File

@ -17,7 +17,7 @@ import (
"code.gitea.io/gitea/modules/setting" "code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil" "code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/web/middleware" "code.gitea.io/gitea/modules/web/middleware"
"code.gitea.io/gitea/services/auth/source/oauth2" "code.gitea.io/gitea/services/oauth2_provider"
) )
// Ensure the struct implements the interface. // Ensure the struct implements the interface.
@ -31,7 +31,7 @@ func CheckOAuthAccessToken(ctx context.Context, accessToken string) int64 {
if !strings.Contains(accessToken, ".") { if !strings.Contains(accessToken, ".") {
return 0 return 0
} }
token, err := oauth2.ParseToken(accessToken, oauth2.DefaultSigningKey) token, err := oauth2_provider.ParseToken(accessToken, oauth2_provider.DefaultSigningKey)
if err != nil { if err != nil {
log.Trace("oauth2.ParseToken: %v", err) log.Trace("oauth2.ParseToken: %v", err)
return 0 return 0
@ -40,7 +40,7 @@ func CheckOAuthAccessToken(ctx context.Context, accessToken string) int64 {
if grant, err = auth_model.GetOAuth2GrantByID(ctx, token.GrantID); err != nil || grant == nil { if grant, err = auth_model.GetOAuth2GrantByID(ctx, token.GrantID); err != nil || grant == nil {
return 0 return 0
} }
if token.Type != oauth2.TypeAccessToken { if token.Kind != oauth2_provider.KindAccessToken {
return 0 return 0
} }
if token.ExpiresAt.Before(time.Now()) || token.IssuedAt.After(time.Now()) { if token.ExpiresAt.Before(time.Now()) || token.IssuedAt.After(time.Now()) {

4
services/auth/source/oauth2/init.go
View File

@ -30,10 +30,6 @@ const ProviderHeaderKey = "gitea-oauth2-provider"
// Init initializes the oauth source // Init initializes the oauth source
func Init(ctx context.Context) error { func Init(ctx context.Context) error {
if err := InitSigningKey(); err != nil {
return err
}
// Lock our mutex // Lock our mutex
gothRWMutex.Lock() gothRWMutex.Lock()

214
services/oauth2_provider/access_token.go Normal file
View File

@ -0,0 +1,214 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package oauth2_provider //nolint
import (
"context"
"fmt"
auth "code.gitea.io/gitea/models/auth"
org_model "code.gitea.io/gitea/models/organization"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"github.com/golang-jwt/jwt/v5"
)
// AccessTokenErrorCode represents an error code specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
type AccessTokenErrorCode string
const (
// AccessTokenErrorCodeInvalidRequest represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidRequest AccessTokenErrorCode = "invalid_request"
// AccessTokenErrorCodeInvalidClient represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidClient = "invalid_client"
// AccessTokenErrorCodeInvalidGrant represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidGrant = "invalid_grant"
// AccessTokenErrorCodeUnauthorizedClient represents an error code specified in RFC 6749
AccessTokenErrorCodeUnauthorizedClient = "unauthorized_client"
// AccessTokenErrorCodeUnsupportedGrantType represents an error code specified in RFC 6749
AccessTokenErrorCodeUnsupportedGrantType = "unsupported_grant_type"
// AccessTokenErrorCodeInvalidScope represents an error code specified in RFC 6749
AccessTokenErrorCodeInvalidScope = "invalid_scope"
)
// AccessTokenError represents an error response specified in RFC 6749
// https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
type AccessTokenError struct {
ErrorCode AccessTokenErrorCode `json:"error" form:"error"`
ErrorDescription string `json:"error_description"`
}
// Error returns the error message
func (err AccessTokenError) Error() string {
return fmt.Sprintf("%s: %s", err.ErrorCode, err.ErrorDescription)
}
// TokenType specifies the kind of token
type TokenType string
const (
// TokenTypeBearer represents a token type specified in RFC 6749
TokenTypeBearer TokenType = "bearer"
// TokenTypeMAC represents a token type specified in RFC 6749
TokenTypeMAC = "mac"
)
// AccessTokenResponse represents a successful access token response
// https://datatracker.ietf.org/doc/html/rfc6749#section-4.2.2
type AccessTokenResponse struct {
AccessToken string `json:"access_token"`
TokenType TokenType `json:"token_type"`
ExpiresIn int64 `json:"expires_in"`
RefreshToken string `json:"refresh_token"`
IDToken string `json:"id_token,omitempty"`
}
func NewAccessTokenResponse(ctx context.Context, grant *auth.OAuth2Grant, serverKey, clientKey JWTSigningKey) (*AccessTokenResponse, *AccessTokenError) {
if setting.OAuth2.InvalidateRefreshTokens {
if err := grant.IncreaseCounter(ctx); err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidGrant,
ErrorDescription: "cannot increase the grant counter",
}
}
}
// generate access token to access the API
expirationDate := timeutil.TimeStampNow().Add(setting.OAuth2.AccessTokenExpirationTime)
accessToken := &Token{
GrantID: grant.ID,
Kind: KindAccessToken,
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(expirationDate.AsTime()),
},
}
signedAccessToken, err := accessToken.SignToken(serverKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
// generate refresh token to request an access token after it expired later
refreshExpirationDate := timeutil.TimeStampNow().Add(setting.OAuth2.RefreshTokenExpirationTime * 60 * 60).AsTime()
refreshToken := &Token{
GrantID: grant.ID,
Counter: grant.Counter,
Kind: KindRefreshToken,
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(refreshExpirationDate),
},
}
signedRefreshToken, err := refreshToken.SignToken(serverKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
// generate OpenID Connect id_token
signedIDToken := ""
if grant.ScopeContains("openid") {
app, err := auth.GetOAuth2ApplicationByID(ctx, grant.ApplicationID)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot find application",
}
}
user, err := user_model.GetUserByID(ctx, grant.UserID)
if err != nil {
if user_model.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 := &OIDCToken{
RegisteredClaims: jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(expirationDate.AsTime()),
Issuer: setting.AppURL,
Audience: []string{app.ClientID},
Subject: fmt.Sprint(grant.UserID),
},
Nonce: grant.Nonce,
}
if grant.ScopeContains("profile") {
idToken.Name = user.GetDisplayName()
idToken.PreferredUsername = user.Name
idToken.Profile = user.HTMLURL()
idToken.Picture = user.AvatarLink(ctx)
idToken.Website = user.Website
idToken.Locale = user.Language
idToken.UpdatedAt = user.UpdatedUnix
}
if grant.ScopeContains("email") {
idToken.Email = user.Email
idToken.EmailVerified = user.IsActive
}
if grant.ScopeContains("groups") {
groups, err := GetOAuthGroupsForUser(ctx, user)
if err != nil {
log.Error("Error getting groups: %v", err)
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "server error",
}
}
idToken.Groups = groups
}
signedIDToken, err = idToken.SignToken(clientKey)
if err != nil {
return nil, &AccessTokenError{
ErrorCode: AccessTokenErrorCodeInvalidRequest,
ErrorDescription: "cannot sign token",
}
}
}
return &AccessTokenResponse{
AccessToken: signedAccessToken,
TokenType: TokenTypeBearer,
ExpiresIn: setting.OAuth2.AccessTokenExpirationTime,
RefreshToken: signedRefreshToken,
IDToken: signedIDToken,
}, nil
}
// returns a list of "org" and "org:team" strings,
// that the given user is a part of.
func GetOAuthGroupsForUser(ctx context.Context, user *user_model.User) ([]string, error) {
orgs, err := org_model.GetUserOrgsList(ctx, user)
if err != nil {
return nil, fmt.Errorf("GetUserOrgList: %w", err)
}
var groups []string
for _, org := range orgs {
groups = append(groups, org.Name)
teams, err := org.LoadTeams(ctx)
if err != nil {
return nil, fmt.Errorf("LoadTeams: %w", err)
}
for _, team := range teams {
if team.IsMember(ctx, user.ID) {
groups = append(groups, org.Name+":"+team.LowerName)
}
}
}
return groups, nil
}

19
services/oauth2_provider/init.go Normal file
View File

@ -0,0 +1,19 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package oauth2_provider //nolint
import (
"context"
"code.gitea.io/gitea/modules/setting"
)
// Init initializes the oauth source
func Init(ctx context.Context) error {
if !setting.OAuth2.Enabled {
return nil
}
return InitSigningKey()
}

2
services/auth/source/oauth2/jwtsigningkey.go → services/oauth2_provider/jwtsigningkey.go
View File

@ -1,7 +1,7 @@
// Copyright 2021 The Gitea Authors. All rights reserved. // Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT // SPDX-License-Identifier: MIT
package oauth2 package oauth2_provider //nolint
import ( import (
"crypto/ecdsa" "crypto/ecdsa"

23
services/auth/source/oauth2/token.go → services/oauth2_provider/token.go
View File

@ -1,7 +1,7 @@
// Copyright 2021 The Gitea Authors. All rights reserved. // Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT // SPDX-License-Identifier: MIT
package oauth2 package oauth2_provider //nolint
import ( import (
"fmt" "fmt"
@ -12,29 +12,22 @@ import (
"github.com/golang-jwt/jwt/v5" "github.com/golang-jwt/jwt/v5"
) )
// ___________ __
// \__ ___/___ | | __ ____ ____
// | | / _ \| |/ // __ \ / \
// | |( <_> ) <\ ___/| | \
// |____| \____/|__|_ \\___ >___| /
// \/ \/ \/
// Token represents an Oauth grant // Token represents an Oauth grant
// TokenType represents the type of token for an oauth application // TokenKind represents the type of token for an oauth application
type TokenType int type TokenKind int
const ( const (
// TypeAccessToken is a token with short lifetime to access the api // KindAccessToken is a token with short lifetime to access the api
TypeAccessToken TokenType = 0 KindAccessToken TokenKind = 0
// TypeRefreshToken is token with long lifetime to refresh access tokens obtained by the client // KindRefreshToken is token with long lifetime to refresh access tokens obtained by the client
TypeRefreshToken = iota KindRefreshToken = iota
) )
// Token represents a JWT token used to authenticate a client // Token represents a JWT token used to authenticate a client
type Token struct { type Token struct {
GrantID int64 `json:"gnt"` GrantID int64 `json:"gnt"`
Type TokenType `json:"tt"` Kind TokenKind `json:"tt"`
Counter int64 `json:"cnt,omitempty"` Counter int64 `json:"cnt,omitempty"`
jwt.RegisteredClaims jwt.RegisteredClaims
} }

28
tests/integration/oauth_test.go
View File

@ -11,7 +11,7 @@ import (
"code.gitea.io/gitea/modules/json" "code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/setting" "code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/routers/web/auth" oauth2_provider "code.gitea.io/gitea/services/oauth2_provider"
"code.gitea.io/gitea/tests" "code.gitea.io/gitea/tests"
"github.com/stretchr/testify/assert" "github.com/stretchr/testify/assert"
@ -177,7 +177,7 @@ func TestAccessTokenExchangeWithoutPKCE(t *testing.T) {
"code": "authcode", "code": "authcode",
}) })
resp := MakeRequest(t, req, http.StatusBadRequest) resp := MakeRequest(t, req, http.StatusBadRequest)
parsedError := new(auth.AccessTokenError) parsedError := new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "failed PKCE code challenge", parsedError.ErrorDescription) assert.Equal(t, "failed PKCE code challenge", parsedError.ErrorDescription)
@ -195,7 +195,7 @@ func TestAccessTokenExchangeWithInvalidCredentials(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp := MakeRequest(t, req, http.StatusBadRequest) resp := MakeRequest(t, req, http.StatusBadRequest)
parsedError := new(auth.AccessTokenError) parsedError := new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "invalid_client", string(parsedError.ErrorCode)) assert.Equal(t, "invalid_client", string(parsedError.ErrorCode))
assert.Equal(t, "cannot load client with client id: '???'", parsedError.ErrorDescription) assert.Equal(t, "cannot load client with client id: '???'", parsedError.ErrorDescription)
@ -210,7 +210,7 @@ func TestAccessTokenExchangeWithInvalidCredentials(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "invalid client secret", parsedError.ErrorDescription) assert.Equal(t, "invalid client secret", parsedError.ErrorDescription)
@ -225,7 +225,7 @@ func TestAccessTokenExchangeWithInvalidCredentials(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "unexpected redirect URI", parsedError.ErrorDescription) assert.Equal(t, "unexpected redirect URI", parsedError.ErrorDescription)
@ -240,7 +240,7 @@ func TestAccessTokenExchangeWithInvalidCredentials(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "client is not authorized", parsedError.ErrorDescription) assert.Equal(t, "client is not authorized", parsedError.ErrorDescription)
@ -255,7 +255,7 @@ func TestAccessTokenExchangeWithInvalidCredentials(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unsupported_grant_type", string(parsedError.ErrorCode)) assert.Equal(t, "unsupported_grant_type", string(parsedError.ErrorCode))
assert.Equal(t, "Only refresh_token or authorization_code grant type is supported", parsedError.ErrorDescription) assert.Equal(t, "Only refresh_token or authorization_code grant type is supported", parsedError.ErrorDescription)
@ -292,7 +292,7 @@ func TestAccessTokenExchangeWithBasicAuth(t *testing.T) {
}) })
req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OmJsYWJsYQ==") req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OmJsYWJsYQ==")
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError := new(auth.AccessTokenError) parsedError := new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "invalid client secret", parsedError.ErrorDescription) assert.Equal(t, "invalid client secret", parsedError.ErrorDescription)
@ -305,7 +305,7 @@ func TestAccessTokenExchangeWithBasicAuth(t *testing.T) {
"code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt", "code_verifier": "N1Zo9-8Rfwhkt68r1r29ty8YwIraXR8eh_1Qwxg7yQXsonBt",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "invalid_client", string(parsedError.ErrorCode)) assert.Equal(t, "invalid_client", string(parsedError.ErrorCode))
assert.Equal(t, "cannot load client with client id: ''", parsedError.ErrorDescription) assert.Equal(t, "cannot load client with client id: ''", parsedError.ErrorDescription)
@ -319,7 +319,7 @@ func TestAccessTokenExchangeWithBasicAuth(t *testing.T) {
}) })
req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OjRNSzhOYTZSNTVzbWRDWTBXdUNDdW1aNmhqUlBuR1k1c2FXVlJISGpKaUE9") req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OjRNSzhOYTZSNTVzbWRDWTBXdUNDdW1aNmhqUlBuR1k1c2FXVlJISGpKaUE9")
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "invalid_request", string(parsedError.ErrorCode)) assert.Equal(t, "invalid_request", string(parsedError.ErrorCode))
assert.Equal(t, "client_id in request body inconsistent with Authorization header", parsedError.ErrorDescription) assert.Equal(t, "client_id in request body inconsistent with Authorization header", parsedError.ErrorDescription)
@ -333,7 +333,7 @@ func TestAccessTokenExchangeWithBasicAuth(t *testing.T) {
}) })
req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OjRNSzhOYTZSNTVzbWRDWTBXdUNDdW1aNmhqUlBuR1k1c2FXVlJISGpKaUE9") req.Header.Add("Authorization", "Basic ZGE3ZGEzYmEtOWExMy00MTY3LTg1NmYtMzg5OWRlMGIwMTM4OjRNSzhOYTZSNTVzbWRDWTBXdUNDdW1aNmhqUlBuR1k1c2FXVlJISGpKaUE9")
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "invalid_request", string(parsedError.ErrorCode)) assert.Equal(t, "invalid_request", string(parsedError.ErrorCode))
assert.Equal(t, "client_secret in request body inconsistent with Authorization header", parsedError.ErrorDescription) assert.Equal(t, "client_secret in request body inconsistent with Authorization header", parsedError.ErrorDescription)
@ -371,7 +371,7 @@ func TestRefreshTokenInvalidation(t *testing.T) {
"refresh_token": parsed.RefreshToken, "refresh_token": parsed.RefreshToken,
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError := new(auth.AccessTokenError) parsedError := new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "invalid_client", string(parsedError.ErrorCode)) assert.Equal(t, "invalid_client", string(parsedError.ErrorCode))
assert.Equal(t, "invalid empty client secret", parsedError.ErrorDescription) assert.Equal(t, "invalid empty client secret", parsedError.ErrorDescription)
@ -384,7 +384,7 @@ func TestRefreshTokenInvalidation(t *testing.T) {
"refresh_token": "UNEXPECTED", "refresh_token": "UNEXPECTED",
}) })
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "unable to parse refresh token", parsedError.ErrorDescription) assert.Equal(t, "unable to parse refresh token", parsedError.ErrorDescription)
@ -414,7 +414,7 @@ func TestRefreshTokenInvalidation(t *testing.T) {
// repeat request should fail // repeat request should fail
req.Body = io.NopCloser(bytes.NewReader(bs)) req.Body = io.NopCloser(bytes.NewReader(bs))
resp = MakeRequest(t, req, http.StatusBadRequest) resp = MakeRequest(t, req, http.StatusBadRequest)
parsedError = new(auth.AccessTokenError) parsedError = new(oauth2_provider.AccessTokenError)
assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError)) assert.NoError(t, json.Unmarshal(resp.Body.Bytes(), parsedError))
assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode)) assert.Equal(t, "unauthorized_client", string(parsedError.ErrorCode))
assert.Equal(t, "token was already used", parsedError.ErrorDescription) assert.Equal(t, "token was already used", parsedError.ErrorDescription)