mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-26 09:09:36 -05:00
752 lines
24 KiB
Go
752 lines
24 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package user
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"fmt"
|
|
"html"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/models"
|
|
"code.gitea.io/gitea/models/login"
|
|
user_model "code.gitea.io/gitea/models/user"
|
|
"code.gitea.io/gitea/modules/base"
|
|
"code.gitea.io/gitea/modules/context"
|
|
"code.gitea.io/gitea/modules/json"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/timeutil"
|
|
"code.gitea.io/gitea/modules/web"
|
|
"code.gitea.io/gitea/services/auth"
|
|
"code.gitea.io/gitea/services/auth/source/oauth2"
|
|
"code.gitea.io/gitea/services/forms"
|
|
|
|
"gitea.com/go-chi/binding"
|
|
"github.com/golang-jwt/jwt"
|
|
)
|
|
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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(grant *login.OAuth2Grant, serverKey, clientKey oauth2.JWTSigningKey) (*AccessTokenResponse, *AccessTokenError) {
|
|
if setting.OAuth2.InvalidateRefreshTokens {
|
|
if err := grant.IncreaseCounter(); 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,
|
|
StandardClaims: jwt.StandardClaims{
|
|
ExpiresAt: expirationDate.AsTime().Unix(),
|
|
},
|
|
}
|
|
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().Unix()
|
|
refreshToken := &oauth2.Token{
|
|
GrantID: grant.ID,
|
|
Counter: grant.Counter,
|
|
Type: oauth2.TypeRefreshToken,
|
|
StandardClaims: jwt.StandardClaims{
|
|
ExpiresAt: 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 := login.GetOAuth2ApplicationByID(grant.ApplicationID)
|
|
if err != nil {
|
|
return nil, &AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeInvalidRequest,
|
|
ErrorDescription: "cannot find application",
|
|
}
|
|
}
|
|
user, err := user_model.GetUserByID(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{
|
|
StandardClaims: jwt.StandardClaims{
|
|
ExpiresAt: expirationDate.AsTime().Unix(),
|
|
Issuer: setting.AppURL,
|
|
Audience: app.ClientID,
|
|
Subject: fmt.Sprint(grant.UserID),
|
|
},
|
|
Nonce: grant.Nonce,
|
|
}
|
|
if grant.ScopeContains("profile") {
|
|
idToken.Name = user.FullName
|
|
idToken.PreferredUsername = user.Name
|
|
idToken.Profile = user.HTMLURL()
|
|
idToken.Picture = user.AvatarLink()
|
|
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(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.User == nil || ctx.Data["AuthedMethod"] != (&auth.OAuth2{}).Name() {
|
|
ctx.Resp.Header().Set("WWW-Authenticate", `Bearer realm=""`)
|
|
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
|
|
return
|
|
}
|
|
|
|
response := &userInfoResponse{
|
|
Sub: fmt.Sprint(ctx.User.ID),
|
|
Name: ctx.User.FullName,
|
|
Username: ctx.User.Name,
|
|
Email: ctx.User.Email,
|
|
Picture: ctx.User.AvatarLink(),
|
|
}
|
|
|
|
groups, err := getOAuthGroupsForUser(ctx.User)
|
|
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(user *user_model.User) ([]string, error) {
|
|
orgs, err := models.GetUserOrgsList(user)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("GetUserOrgList: %v", err)
|
|
}
|
|
|
|
var groups []string
|
|
for _, org := range orgs {
|
|
groups = append(groups, org.Name)
|
|
teams, err := org.LoadTeams()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("LoadTeams: %v", err)
|
|
}
|
|
for _, team := range teams {
|
|
if team.IsMember(user.ID) {
|
|
groups = append(groups, org.Name+":"+team.LowerName)
|
|
}
|
|
}
|
|
}
|
|
return groups, nil
|
|
}
|
|
|
|
// IntrospectOAuth introspects an oauth token
|
|
func IntrospectOAuth(ctx *context.Context) {
|
|
if ctx.User == nil {
|
|
ctx.Resp.Header().Set("WWW-Authenticate", `Bearer realm=""`)
|
|
ctx.PlainText(http.StatusUnauthorized, "no valid authorization")
|
|
return
|
|
}
|
|
|
|
var response struct {
|
|
Active bool `json:"active"`
|
|
Scope string `json:"scope,omitempty"`
|
|
jwt.StandardClaims
|
|
}
|
|
|
|
form := web.GetForm(ctx).(*forms.IntrospectTokenForm)
|
|
token, err := oauth2.ParseToken(form.Token, oauth2.DefaultSigningKey)
|
|
if err == nil {
|
|
if token.Valid() == nil {
|
|
grant, err := login.GetOAuth2GrantByID(token.GrantID)
|
|
if err == nil && grant != nil {
|
|
app, err := login.GetOAuth2ApplicationByID(grant.ApplicationID)
|
|
if err == nil && app != nil {
|
|
response.Active = true
|
|
response.Scope = grant.Scope
|
|
response.Issuer = setting.AppURL
|
|
response.Audience = app.ClientID
|
|
response.Subject = fmt.Sprint(grant.UserID)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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 := login.GetOAuth2ApplicationByClientID(form.ClientID)
|
|
if err != nil {
|
|
if login.IsErrOauthClientIDInvalid(err) {
|
|
handleAuthorizeError(ctx, AuthorizeError{
|
|
ErrorCode: ErrorCodeUnauthorizedClient,
|
|
ErrorDescription: "Client ID not registered",
|
|
State: form.State,
|
|
}, "")
|
|
return
|
|
}
|
|
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
|
|
return
|
|
}
|
|
|
|
user, err := user_model.GetUserByID(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 "":
|
|
break
|
|
default:
|
|
handleAuthorizeError(ctx, AuthorizeError{
|
|
ErrorCode: ErrorCodeInvalidRequest,
|
|
ErrorDescription: "unsupported code challenge method",
|
|
State: form.State,
|
|
}, form.RedirectURI)
|
|
return
|
|
}
|
|
|
|
grant, err := app.GetGrantByUserID(ctx.User.ID)
|
|
if err != nil {
|
|
handleServerError(ctx, form.State, form.RedirectURI)
|
|
return
|
|
}
|
|
|
|
// Redirect if user already granted access
|
|
if grant != nil {
|
|
code, err := grant.GenerateNewAuthorizationCode(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(form.Nonce)
|
|
if err != nil {
|
|
log.Error("Unable to update nonce: %v", err)
|
|
}
|
|
}
|
|
ctx.Redirect(redirect.String(), 302)
|
|
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
|
|
ctx.Data["ApplicationUserLink"] = "<a href=\"" + html.EscapeString(user.HTMLURL()) + "\">@" + html.EscapeString(user.Name) + "</a>"
|
|
ctx.Data["ApplicationRedirectDomainHTML"] = "<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
|
|
}
|
|
app, err := login.GetOAuth2ApplicationByClientID(form.ClientID)
|
|
if err != nil {
|
|
ctx.ServerError("GetOAuth2ApplicationByClientID", err)
|
|
return
|
|
}
|
|
grant, err := app.CreateGrant(ctx.User.ID, form.Scope)
|
|
if err != nil {
|
|
handleAuthorizeError(ctx, AuthorizeError{
|
|
State: form.State,
|
|
ErrorDescription: "cannot create grant for user",
|
|
ErrorCode: ErrorCodeServerError,
|
|
}, form.RedirectURI)
|
|
return
|
|
}
|
|
if len(form.Nonce) > 0 {
|
|
err := grant.SetNonce(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(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(), 302)
|
|
}
|
|
|
|
// OIDCWellKnown generates JSON so OIDC clients know Gitea's capabilities
|
|
func OIDCWellKnown(ctx *context.Context) {
|
|
t := ctx.Render.TemplateLookup("user/auth/oidc_wellknown")
|
|
ctx.Resp.Header().Set("Content-Type", "application/json")
|
|
ctx.Data["SigningKey"] = oauth2.DefaultSigningKey
|
|
if err := t.Execute(ctx.Resp, ctx.Data); err != nil {
|
|
log.Error("%v", err)
|
|
ctx.Error(http.StatusInternalServerError)
|
|
}
|
|
}
|
|
|
|
// 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 form.ClientID == "" {
|
|
authHeader := ctx.Req.Header.Get("Authorization")
|
|
authContent := strings.SplitN(authHeader, " ", 2)
|
|
if len(authContent) == 2 && authContent[0] == "Basic" {
|
|
payload, err := base64.StdEncoding.DecodeString(authContent[1])
|
|
if err != nil {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeInvalidRequest,
|
|
ErrorDescription: "cannot parse basic auth header",
|
|
})
|
|
return
|
|
}
|
|
pair := strings.SplitN(string(payload), ":", 2)
|
|
if len(pair) != 2 {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeInvalidRequest,
|
|
ErrorDescription: "cannot parse basic auth header",
|
|
})
|
|
return
|
|
}
|
|
form.ClientID = pair[0]
|
|
form.ClientSecret = pair[1]
|
|
}
|
|
}
|
|
|
|
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) {
|
|
token, err := oauth2.ParseToken(form.RefreshToken, serverKey)
|
|
if err != nil {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
|
|
ErrorDescription: "client is not authorized",
|
|
})
|
|
return
|
|
}
|
|
// get grant before increasing counter
|
|
grant, err := login.GetOAuth2GrantByID(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(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 := login.GetOAuth2ApplicationByClientID(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.ValidateClientSecret([]byte(form.ClientSecret)) {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
|
|
ErrorDescription: "client is not authorized",
|
|
})
|
|
return
|
|
}
|
|
if form.RedirectURI != "" && !app.ContainsRedirectURI(form.RedirectURI) {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeUnauthorizedClient,
|
|
ErrorDescription: "client is not authorized",
|
|
})
|
|
return
|
|
}
|
|
authorizationCode, err := login.GetOAuth2AuthorizationByCode(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: "client is not authorized",
|
|
})
|
|
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(); err != nil {
|
|
handleAccessTokenError(ctx, AccessTokenError{
|
|
ErrorCode: AccessTokenErrorCodeInvalidRequest,
|
|
ErrorDescription: "cannot proceed your request",
|
|
})
|
|
}
|
|
resp, tokenErr := newAccessTokenResponse(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(400, 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(), 302)
|
|
}
|