diff options
Diffstat (limited to 'routers/web/auth/linkaccount.go')
| -rw-r--r-- | routers/web/auth/linkaccount.go | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/routers/web/auth/linkaccount.go b/routers/web/auth/linkaccount.go new file mode 100644 index 0000000..9b0141c --- /dev/null +++ b/routers/web/auth/linkaccount.go @@ -0,0 +1,308 @@ +// Copyright 2017 The Gitea Authors. All rights reserved. +// SPDX-License-Identifier: MIT + +package auth + +import ( + "errors" + "fmt" + "net/http" + "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/log" + "code.gitea.io/gitea/modules/setting" + "code.gitea.io/gitea/modules/util" + "code.gitea.io/gitea/modules/web" + auth_service "code.gitea.io/gitea/services/auth" + "code.gitea.io/gitea/services/auth/source/oauth2" + "code.gitea.io/gitea/services/context" + "code.gitea.io/gitea/services/externalaccount" + "code.gitea.io/gitea/services/forms" + + "github.com/markbates/goth" +) + +var tplLinkAccount base.TplName = "user/auth/link_account" + +// LinkAccount shows the page where the user can decide to login or create a new account +func LinkAccount(ctx *context.Context) { + ctx.Data["DisablePassword"] = !setting.Service.RequireExternalRegistrationPassword || setting.Service.AllowOnlyExternalRegistration + ctx.Data["Title"] = ctx.Tr("link_account") + ctx.Data["LinkAccountMode"] = true + ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha && setting.Service.RequireExternalRegistrationCaptcha + ctx.Data["Captcha"] = context.GetImageCaptcha() + ctx.Data["CaptchaType"] = setting.Service.CaptchaType + ctx.Data["RecaptchaURL"] = setting.Service.RecaptchaURL + ctx.Data["RecaptchaSitekey"] = setting.Service.RecaptchaSitekey + ctx.Data["HcaptchaSitekey"] = setting.Service.HcaptchaSitekey + ctx.Data["McaptchaSitekey"] = setting.Service.McaptchaSitekey + ctx.Data["McaptchaURL"] = setting.Service.McaptchaURL + ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey + ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration + ctx.Data["AllowOnlyInternalRegistration"] = setting.Service.AllowOnlyInternalRegistration + ctx.Data["ShowRegistrationButton"] = false + + // use this to set the right link into the signIn and signUp templates in the link_account template + ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin" + ctx.Data["SignUpLink"] = setting.AppSubURL + "/user/link_account_signup" + + gothUser := ctx.Session.Get("linkAccountGothUser") + if gothUser == nil { + ctx.ServerError("UserSignIn", errors.New("not in LinkAccount session")) + return + } + + gu, _ := gothUser.(goth.User) + uname, err := getUserName(&gu) + if err != nil { + ctx.ServerError("UserSignIn", err) + return + } + email := gu.Email + ctx.Data["user_name"] = uname + ctx.Data["email"] = email + + if len(email) != 0 { + u, err := user_model.GetUserByEmail(ctx, email) + if err != nil && !user_model.IsErrUserNotExist(err) { + ctx.ServerError("UserSignIn", err) + return + } + if u != nil { + ctx.Data["user_exists"] = true + } + } else if len(uname) != 0 { + u, err := user_model.GetUserByName(ctx, uname) + if err != nil && !user_model.IsErrUserNotExist(err) { + ctx.ServerError("UserSignIn", err) + return + } + if u != nil { + ctx.Data["user_exists"] = true + } + } + + ctx.HTML(http.StatusOK, tplLinkAccount) +} + +func handleSignInError(ctx *context.Context, userName string, ptrForm any, tmpl base.TplName, invoker string, err error) { + if errors.Is(err, util.ErrNotExist) { + ctx.RenderWithErr(ctx.Tr("form.username_password_incorrect"), tmpl, ptrForm) + } else if errors.Is(err, util.ErrInvalidArgument) { + ctx.Data["user_exists"] = true + ctx.RenderWithErr(ctx.Tr("form.username_password_incorrect"), tmpl, ptrForm) + } else if user_model.IsErrUserProhibitLogin(err) { + ctx.Data["user_exists"] = true + log.Info("Failed authentication attempt for %s from %s: %v", userName, ctx.RemoteAddr(), err) + ctx.Data["Title"] = ctx.Tr("auth.prohibit_login") + ctx.HTML(http.StatusOK, "user/auth/prohibit_login") + } else if user_model.IsErrUserInactive(err) { + ctx.Data["user_exists"] = true + if setting.Service.RegisterEmailConfirm { + ctx.Data["Title"] = ctx.Tr("auth.active_your_account") + ctx.HTML(http.StatusOK, TplActivate) + } else { + log.Info("Failed authentication attempt for %s from %s: %v", userName, ctx.RemoteAddr(), err) + ctx.Data["Title"] = ctx.Tr("auth.prohibit_login") + ctx.HTML(http.StatusOK, "user/auth/prohibit_login") + } + } else { + ctx.ServerError(invoker, err) + } +} + +// LinkAccountPostSignIn handle the coupling of external account with another account using signIn +func LinkAccountPostSignIn(ctx *context.Context) { + signInForm := web.GetForm(ctx).(*forms.SignInForm) + ctx.Data["DisablePassword"] = !setting.Service.RequireExternalRegistrationPassword || setting.Service.AllowOnlyExternalRegistration + ctx.Data["Title"] = ctx.Tr("link_account") + ctx.Data["LinkAccountMode"] = true + ctx.Data["LinkAccountModeSignIn"] = true + ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha && setting.Service.RequireExternalRegistrationCaptcha + 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["McaptchaSitekey"] = setting.Service.McaptchaSitekey + ctx.Data["McaptchaURL"] = setting.Service.McaptchaURL + ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey + ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration + ctx.Data["ShowRegistrationButton"] = false + + // use this to set the right link into the signIn and signUp templates in the link_account template + ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin" + ctx.Data["SignUpLink"] = setting.AppSubURL + "/user/link_account_signup" + + gothUser := ctx.Session.Get("linkAccountGothUser") + if gothUser == nil { + ctx.ServerError("UserSignIn", errors.New("not in LinkAccount session")) + return + } + + if ctx.HasError() { + ctx.HTML(http.StatusOK, tplLinkAccount) + return + } + + u, _, err := auth_service.UserSignIn(ctx, signInForm.UserName, signInForm.Password) + if err != nil { + handleSignInError(ctx, signInForm.UserName, &signInForm, tplLinkAccount, "UserLinkAccount", err) + return + } + + linkAccount(ctx, u, gothUser.(goth.User), signInForm.Remember) +} + +func linkAccount(ctx *context.Context, u *user_model.User, gothUser goth.User, remember bool) { + updateAvatarIfNeed(ctx, gothUser.AvatarURL, u) + + // If this user is enrolled in 2FA, we can't sign the user in just yet. + // Instead, redirect them to the 2FA authentication page. + // We deliberately ignore the skip local 2fa setting here because we are linking to a previous user here + _, err := auth.GetTwoFactorByUID(ctx, u.ID) + if err != nil { + if !auth.IsErrTwoFactorNotEnrolled(err) { + ctx.ServerError("UserLinkAccount", err) + return + } + + err = externalaccount.LinkAccountToUser(ctx, u, gothUser) + if err != nil { + ctx.ServerError("UserLinkAccount", err) + return + } + + handleSignIn(ctx, u, remember) + return + } + + if err := updateSession(ctx, nil, map[string]any{ + // User needs to use 2FA, save data and redirect to 2FA page. + "twofaUid": u.ID, + "twofaRemember": remember, + "linkAccount": true, + }); err != nil { + ctx.ServerError("RegenerateSession", err) + return + } + + // If WebAuthn is enrolled -> Redirect to WebAuthn instead + regs, err := auth.GetWebAuthnCredentialsByUID(ctx, u.ID) + if err == nil && len(regs) > 0 { + ctx.Redirect(setting.AppSubURL + "/user/webauthn") + return + } + + ctx.Redirect(setting.AppSubURL + "/user/two_factor") +} + +// LinkAccountPostRegister handle the creation of a new account for an external account using signUp +func LinkAccountPostRegister(ctx *context.Context) { + form := web.GetForm(ctx).(*forms.RegisterForm) + // TODO Make insecure passwords optional for local accounts also, + // once email-based Second-Factor Auth is available + ctx.Data["DisablePassword"] = !setting.Service.RequireExternalRegistrationPassword || setting.Service.AllowOnlyExternalRegistration + ctx.Data["Title"] = ctx.Tr("link_account") + ctx.Data["LinkAccountMode"] = true + ctx.Data["LinkAccountModeRegister"] = true + ctx.Data["EnableCaptcha"] = setting.Service.EnableCaptcha && setting.Service.RequireExternalRegistrationCaptcha + 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["McaptchaSitekey"] = setting.Service.McaptchaSitekey + ctx.Data["McaptchaURL"] = setting.Service.McaptchaURL + ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey + ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration + ctx.Data["ShowRegistrationButton"] = false + + // use this to set the right link into the signIn and signUp templates in the link_account template + ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin" + ctx.Data["SignUpLink"] = setting.AppSubURL + "/user/link_account_signup" + + gothUserInterface := ctx.Session.Get("linkAccountGothUser") + if gothUserInterface == nil { + ctx.ServerError("UserSignUp", errors.New("not in LinkAccount session")) + return + } + gothUser, ok := gothUserInterface.(goth.User) + if !ok { + ctx.ServerError("UserSignUp", fmt.Errorf("session linkAccountGothUser type is %t but not goth.User", gothUserInterface)) + return + } + + if ctx.HasError() { + ctx.HTML(http.StatusOK, tplLinkAccount) + return + } + + if setting.Service.DisableRegistration || setting.Service.AllowOnlyInternalRegistration { + ctx.Error(http.StatusForbidden) + return + } + + if setting.Service.EnableCaptcha && setting.Service.RequireExternalRegistrationCaptcha { + context.VerifyCaptcha(ctx, tplLinkAccount, form) + if ctx.Written() { + return + } + } + + if !form.IsEmailDomainAllowed() { + ctx.RenderWithErr(ctx.Tr("auth.email_domain_blacklisted"), tplLinkAccount, &form) + return + } + + if setting.Service.AllowOnlyExternalRegistration || !setting.Service.RequireExternalRegistrationPassword { + // In user_model.User an empty password is classed as not set, so we set form.Password to empty. + // Eventually the database should be changed to indicate "Second Factor"-enabled accounts + // (accounts that do not introduce the security vulnerabilities of a password). + // If a user decides to circumvent second-factor security, and purposefully create a password, + // they can still do so using the "Recover Account" option. + form.Password = "" + } else { + if (len(strings.TrimSpace(form.Password)) > 0 || len(strings.TrimSpace(form.Retype)) > 0) && form.Password != form.Retype { + ctx.Data["Err_Password"] = true + ctx.RenderWithErr(ctx.Tr("form.password_not_match"), tplLinkAccount, &form) + return + } + if len(strings.TrimSpace(form.Password)) > 0 && len(form.Password) < setting.MinPasswordLength { + ctx.Data["Err_Password"] = true + ctx.RenderWithErr(ctx.Tr("auth.password_too_short", setting.MinPasswordLength), tplLinkAccount, &form) + return + } + } + + authSource, err := auth.GetActiveOAuth2SourceByName(ctx, gothUser.Provider) + if err != nil { + ctx.ServerError("CreateUser", err) + return + } + + u := &user_model.User{ + Name: form.UserName, + Email: form.Email, + Passwd: form.Password, + LoginType: auth.OAuth2, + LoginSource: authSource.ID, + LoginName: gothUser.UserID, + } + + if !createAndHandleCreatedUser(ctx, tplLinkAccount, form, u, nil, &gothUser, false) { + // error already handled + return + } + + source := authSource.Cfg.(*oauth2.Source) + if err := syncGroupsToTeams(ctx, source, &gothUser, u); err != nil { + ctx.ServerError("SyncGroupsToTeams", err) + return + } + + handleSignIn(ctx, u, false) +} |