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454 lines
13 KiB
454 lines
13 KiB
// Copyright 2017 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package auth
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import (
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"fmt"
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"net/http"
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"net/url"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/auth/openid"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/context"
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"code.gitea.io/gitea/modules/hcaptcha"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/recaptcha"
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"code.gitea.io/gitea/modules/session"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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"code.gitea.io/gitea/modules/web"
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"code.gitea.io/gitea/modules/web/middleware"
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"code.gitea.io/gitea/services/auth"
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"code.gitea.io/gitea/services/forms"
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)
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const (
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tplSignInOpenID base.TplName = "user/auth/signin_openid"
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tplConnectOID base.TplName = "user/auth/signup_openid_connect"
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tplSignUpOID base.TplName = "user/auth/signup_openid_register"
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)
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// SignInOpenID render sign in page
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func SignInOpenID(ctx *context.Context) {
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ctx.Data["Title"] = ctx.Tr("sign_in")
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if ctx.FormString("openid.return_to") != "" {
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signInOpenIDVerify(ctx)
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return
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}
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// Check auto-login.
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isSucceed, err := AutoSignIn(ctx)
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if err != nil {
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ctx.ServerError("AutoSignIn", err)
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return
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}
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redirectTo := ctx.FormString("redirect_to")
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if len(redirectTo) > 0 {
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middleware.SetRedirectToCookie(ctx.Resp, redirectTo)
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} else {
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redirectTo = ctx.GetCookie("redirect_to")
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}
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if isSucceed {
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middleware.DeleteRedirectToCookie(ctx.Resp)
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ctx.RedirectToFirst(redirectTo)
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return
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}
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsLoginOpenID"] = true
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ctx.HTML(http.StatusOK, tplSignInOpenID)
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}
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// Check if the given OpenID URI is allowed by blacklist/whitelist
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func allowedOpenIDURI(uri string) (err error) {
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// In case a Whitelist is present, URI must be in it
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// in order to be accepted
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if len(setting.Service.OpenIDWhitelist) != 0 {
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for _, pat := range setting.Service.OpenIDWhitelist {
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if pat.MatchString(uri) {
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return nil // pass
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}
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}
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// must match one of this or be refused
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return fmt.Errorf("URI not allowed by whitelist")
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}
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// A blacklist match expliclty forbids
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for _, pat := range setting.Service.OpenIDBlacklist {
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if pat.MatchString(uri) {
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return fmt.Errorf("URI forbidden by blacklist")
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}
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}
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return nil
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}
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// SignInOpenIDPost response for openid sign in request
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func SignInOpenIDPost(ctx *context.Context) {
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form := web.GetForm(ctx).(*forms.SignInOpenIDForm)
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ctx.Data["Title"] = ctx.Tr("sign_in")
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsLoginOpenID"] = true
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if ctx.HasError() {
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ctx.HTML(http.StatusOK, tplSignInOpenID)
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return
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}
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id, err := openid.Normalize(form.Openid)
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &form)
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return
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}
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form.Openid = id
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log.Trace("OpenID uri: " + id)
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err = allowedOpenIDURI(id)
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &form)
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return
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}
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redirectTo := setting.AppURL + "user/login/openid"
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url, err := openid.RedirectURL(id, redirectTo, setting.AppURL)
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if err != nil {
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log.Error("Error in OpenID redirect URL: %s, %v", redirectTo, err.Error())
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ctx.RenderWithErr(fmt.Sprintf("Unable to find OpenID provider in %s", redirectTo), tplSignInOpenID, &form)
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return
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}
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// Request optional nickname and email info
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// NOTE: change to `openid.sreg.required` to require it
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url += "&openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1"
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url += "&openid.sreg.optional=nickname%2Cemail"
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log.Trace("Form-passed openid-remember: %t", form.Remember)
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if err := ctx.Session.Set("openid_signin_remember", form.Remember); err != nil {
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log.Error("SignInOpenIDPost: Could not set openid_signin_remember in session: %v", err)
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}
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if err := ctx.Session.Release(); err != nil {
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log.Error("SignInOpenIDPost: Unable to save changes to the session: %v", err)
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}
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ctx.Redirect(url)
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}
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// signInOpenIDVerify handles response from OpenID provider
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func signInOpenIDVerify(ctx *context.Context) {
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log.Trace("Incoming call to: %s", ctx.Req.URL.String())
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fullURL := setting.AppURL + ctx.Req.URL.String()[1:]
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log.Trace("Full URL: %s", fullURL)
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id, err := openid.Verify(fullURL)
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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log.Trace("Verified ID: %s", id)
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/* Now we should seek for the user and log him in, or prompt
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* to register if not found */
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u, err := user_model.GetUserByOpenID(id)
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if err != nil {
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if !user_model.IsErrUserNotExist(err) {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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log.Error("signInOpenIDVerify: %v", err)
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}
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if u != nil {
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log.Trace("User exists, logging in")
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remember, _ := ctx.Session.Get("openid_signin_remember").(bool)
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log.Trace("Session stored openid-remember: %t", remember)
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handleSignIn(ctx, u, remember)
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return
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}
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log.Trace("User with openid: %s does not exist, should connect or register", id)
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parsedURL, err := url.Parse(fullURL)
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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values, err := url.ParseQuery(parsedURL.RawQuery)
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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email := values.Get("openid.sreg.email")
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nickname := values.Get("openid.sreg.nickname")
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log.Trace("User has email=%s and nickname=%s", email, nickname)
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if email != "" {
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u, err = user_model.GetUserByEmail(email)
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if err != nil {
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if !user_model.IsErrUserNotExist(err) {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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log.Error("signInOpenIDVerify: %v", err)
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}
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if u != nil {
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log.Trace("Local user %s has OpenID provided email %s", u.LowerName, email)
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}
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}
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if u == nil && nickname != "" {
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u, _ = user_model.GetUserByName(nickname)
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if err != nil {
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if !user_model.IsErrUserNotExist(err) {
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ctx.RenderWithErr(err.Error(), tplSignInOpenID, &forms.SignInOpenIDForm{
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Openid: id,
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})
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return
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}
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}
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if u != nil {
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log.Trace("Local user %s has OpenID provided nickname %s", u.LowerName, nickname)
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}
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}
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if _, err := session.RegenerateSession(ctx.Resp, ctx.Req); err != nil {
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ctx.ServerError("RegenerateSession", err)
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return
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}
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if err := ctx.Session.Set("openid_verified_uri", id); err != nil {
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log.Error("signInOpenIDVerify: Could not set openid_verified_uri in session: %v", err)
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}
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if err := ctx.Session.Set("openid_determined_email", email); err != nil {
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log.Error("signInOpenIDVerify: Could not set openid_determined_email in session: %v", err)
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}
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if u != nil {
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nickname = u.LowerName
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}
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if err := ctx.Session.Set("openid_determined_username", nickname); err != nil {
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log.Error("signInOpenIDVerify: Could not set openid_determined_username in session: %v", err)
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}
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if err := ctx.Session.Release(); err != nil {
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log.Error("signInOpenIDVerify: Unable to save changes to the session: %v", err)
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}
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if u != nil || !setting.Service.EnableOpenIDSignUp || setting.Service.AllowOnlyInternalRegistration {
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ctx.Redirect(setting.AppSubURL + "/user/openid/connect")
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} else {
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ctx.Redirect(setting.AppSubURL + "/user/openid/register")
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}
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}
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// ConnectOpenID shows a form to connect an OpenID URI to an existing account
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func ConnectOpenID(ctx *context.Context) {
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oid, _ := ctx.Session.Get("openid_verified_uri").(string)
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if oid == "" {
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ctx.Redirect(setting.AppSubURL + "/user/login/openid")
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return
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}
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ctx.Data["Title"] = "OpenID connect"
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsOpenIDConnect"] = true
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ctx.Data["EnableOpenIDSignUp"] = setting.Service.EnableOpenIDSignUp
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ctx.Data["AllowOnlyInternalRegistration"] = setting.Service.AllowOnlyInternalRegistration
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ctx.Data["OpenID"] = oid
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userName, _ := ctx.Session.Get("openid_determined_username").(string)
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if userName != "" {
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ctx.Data["user_name"] = userName
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}
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ctx.HTML(http.StatusOK, tplConnectOID)
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}
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// ConnectOpenIDPost handles submission of a form to connect an OpenID URI to an existing account
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func ConnectOpenIDPost(ctx *context.Context) {
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form := web.GetForm(ctx).(*forms.ConnectOpenIDForm)
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oid, _ := ctx.Session.Get("openid_verified_uri").(string)
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if oid == "" {
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ctx.Redirect(setting.AppSubURL + "/user/login/openid")
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return
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}
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ctx.Data["Title"] = "OpenID connect"
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsOpenIDConnect"] = true
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ctx.Data["EnableOpenIDSignUp"] = setting.Service.EnableOpenIDSignUp
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ctx.Data["OpenID"] = oid
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u, _, err := auth.UserSignIn(form.UserName, form.Password)
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if err != nil {
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if user_model.IsErrUserNotExist(err) {
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ctx.RenderWithErr(ctx.Tr("form.username_password_incorrect"), tplConnectOID, &form)
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} else {
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ctx.ServerError("ConnectOpenIDPost", err)
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}
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return
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}
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// add OpenID for the user
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userOID := &user_model.UserOpenID{UID: u.ID, URI: oid}
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if err = user_model.AddUserOpenID(userOID); err != nil {
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if user_model.IsErrOpenIDAlreadyUsed(err) {
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ctx.RenderWithErr(ctx.Tr("form.openid_been_used", oid), tplConnectOID, &form)
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return
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}
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ctx.ServerError("AddUserOpenID", err)
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return
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}
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ctx.Flash.Success(ctx.Tr("settings.add_openid_success"))
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remember, _ := ctx.Session.Get("openid_signin_remember").(bool)
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log.Trace("Session stored openid-remember: %t", remember)
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handleSignIn(ctx, u, remember)
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}
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// RegisterOpenID shows a form to create a new user authenticated via an OpenID URI
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func RegisterOpenID(ctx *context.Context) {
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oid, _ := ctx.Session.Get("openid_verified_uri").(string)
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if oid == "" {
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ctx.Redirect(setting.AppSubURL + "/user/login/openid")
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return
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}
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ctx.Data["Title"] = "OpenID signup"
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsOpenIDRegister"] = true
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ctx.Data["EnableOpenIDSignUp"] = setting.Service.EnableOpenIDSignUp
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ctx.Data["AllowOnlyInternalRegistration"] = setting.Service.AllowOnlyInternalRegistration
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ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha
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ctx.Data["Captcha"] = context.GetImageCaptcha()
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ctx.Data["CaptchaType"] = setting.Service.CaptchaType
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ctx.Data["RecaptchaSitekey"] = setting.Service.RecaptchaSitekey
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ctx.Data["HcaptchaSitekey"] = setting.Service.HcaptchaSitekey
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ctx.Data["RecaptchaURL"] = setting.Service.RecaptchaURL
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ctx.Data["OpenID"] = oid
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userName, _ := ctx.Session.Get("openid_determined_username").(string)
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if userName != "" {
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ctx.Data["user_name"] = userName
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}
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email, _ := ctx.Session.Get("openid_determined_email").(string)
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if email != "" {
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ctx.Data["email"] = email
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}
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ctx.HTML(http.StatusOK, tplSignUpOID)
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}
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// RegisterOpenIDPost handles submission of a form to create a new user authenticated via an OpenID URI
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func RegisterOpenIDPost(ctx *context.Context) {
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form := web.GetForm(ctx).(*forms.SignUpOpenIDForm)
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oid, _ := ctx.Session.Get("openid_verified_uri").(string)
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if oid == "" {
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ctx.Redirect(setting.AppSubURL + "/user/login/openid")
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return
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}
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ctx.Data["Title"] = "OpenID signup"
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ctx.Data["PageIsSignIn"] = true
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ctx.Data["PageIsOpenIDRegister"] = true
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ctx.Data["EnableOpenIDSignUp"] = setting.Service.EnableOpenIDSignUp
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ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha
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ctx.Data["RecaptchaURL"] = setting.Service.RecaptchaURL
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ctx.Data["Captcha"] = context.GetImageCaptcha()
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ctx.Data["CaptchaType"] = setting.Service.CaptchaType
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ctx.Data["RecaptchaSitekey"] = setting.Service.RecaptchaSitekey
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ctx.Data["HcaptchaSitekey"] = setting.Service.HcaptchaSitekey
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ctx.Data["OpenID"] = oid
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if setting.Service.AllowOnlyInternalRegistration {
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ctx.Error(http.StatusForbidden)
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return
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}
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if setting.Service.EnableCaptcha {
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var valid bool
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var err error
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switch setting.Service.CaptchaType {
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case setting.ImageCaptcha:
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valid = context.GetImageCaptcha().VerifyReq(ctx.Req)
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case setting.ReCaptcha:
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if err := ctx.Req.ParseForm(); err != nil {
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ctx.ServerError("", err)
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return
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}
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valid, err = recaptcha.Verify(ctx, form.GRecaptchaResponse)
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case setting.HCaptcha:
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if err := ctx.Req.ParseForm(); err != nil {
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ctx.ServerError("", err)
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return
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}
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valid, err = hcaptcha.Verify(ctx, form.HcaptchaResponse)
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default:
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ctx.ServerError("Unknown Captcha Type", fmt.Errorf("Unknown Captcha Type: %s", setting.Service.CaptchaType))
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return
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}
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if err != nil {
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log.Debug("%s", err.Error())
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}
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if !valid {
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ctx.Data["Err_Captcha"] = true
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ctx.RenderWithErr(ctx.Tr("form.captcha_incorrect"), tplSignUpOID, &form)
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return
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}
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}
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length := setting.MinPasswordLength
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if length < 256 {
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length = 256
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}
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password, err := util.CryptoRandomString(int64(length))
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if err != nil {
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ctx.RenderWithErr(err.Error(), tplSignUpOID, form)
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return
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}
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u := &user_model.User{
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Name: form.UserName,
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Email: form.Email,
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Passwd: password,
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}
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if !createUserInContext(ctx, tplSignUpOID, form, u, nil, nil, false) {
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// error already handled
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return
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}
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// add OpenID for the user
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userOID := &user_model.UserOpenID{UID: u.ID, URI: oid}
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if err = user_model.AddUserOpenID(userOID); err != nil {
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if user_model.IsErrOpenIDAlreadyUsed(err) {
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ctx.RenderWithErr(ctx.Tr("form.openid_been_used", oid), tplSignUpOID, &form)
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return
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}
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ctx.ServerError("AddUserOpenID", err)
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return
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}
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if !handleUserCreated(ctx, u, nil) {
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// error already handled
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return
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}
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remember, _ := ctx.Session.Get("openid_signin_remember").(bool)
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log.Trace("Session stored openid-remember: %t", remember)
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handleSignIn(ctx, u, remember)
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}
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