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gitea/routers/web/auth/openid.go
wxiaoguang 49dd906753
Use base32 for 2FA scratch token (#18384)
* Use base32 for 2FA scratch token
* rename Secure* to Crypto*, add comments
2022-01-26 12:10:10 +08:00

456 lines
13 KiB
Go

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