From 0f14f69e6070c9aca09f57c419e7d6007d0e520b Mon Sep 17 00:00:00 2001
From: 6543 <6543@obermui.de>
Date: Sat, 28 Nov 2020 23:41:06 +0100
Subject: [PATCH] Verify password for local-account activation (#13631)

* Verify passwords for activation

This is to prevent 3rd party activation

* Fix function comment

* only veify password on local-account aktivation

* fix lint

* Update templates/user/auth/activate.tmpl

Co-authored-by: silverwind <me@silverwind.io>

Co-authored-by: Andreas Shimokawa <shimokawa@fsfe.org>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
---
 routers/user/auth.go              | 72 +++++++++++++++++++------------
 templates/user/auth/activate.tmpl | 14 +++++-
 2 files changed, 58 insertions(+), 28 deletions(-)

diff --git a/routers/user/auth.go b/routers/user/auth.go
index ba6420967..d347962ca 100644
--- a/routers/user/auth.go
+++ b/routers/user/auth.go
@@ -1203,6 +1203,8 @@ func SignUpPost(ctx *context.Context, cpt *captcha.Captcha, form auth.RegisterFo
 // Activate render activate user page
 func Activate(ctx *context.Context) {
 	code := ctx.Query("code")
+	password := ctx.Query("password")
+
 	if len(code) == 0 {
 		ctx.Data["IsActivatePage"] = true
 		if ctx.User.IsActive {
@@ -1228,42 +1230,58 @@ func Activate(ctx *context.Context) {
 		return
 	}
 
-	// Verify code.
-	if user := models.VerifyUserActiveCode(code); user != nil {
-		user.IsActive = true
-		var err error
-		if user.Rands, err = models.GetUserSalt(); err != nil {
-			ctx.ServerError("UpdateUser", err)
+	user := models.VerifyUserActiveCode(code)
+	// if code is wrong
+	if user == nil {
+		ctx.Data["IsActivateFailed"] = true
+		ctx.HTML(200, TplActivate)
+		return
+	}
+
+	// if account is local account, verify password
+	if user.LoginSource == 0 {
+		if len(password) == 0 {
+			ctx.Data["Code"] = code
+			ctx.Data["NeedsPassword"] = true
+			ctx.HTML(200, TplActivate)
 			return
 		}
-		if err := models.UpdateUserCols(user, "is_active", "rands"); err != nil {
-			if models.IsErrUserNotExist(err) {
-				ctx.Error(404)
-			} else {
-				ctx.ServerError("UpdateUser", err)
-			}
+		if !user.ValidatePassword(password) {
+			ctx.Data["IsActivateFailed"] = true
+			ctx.HTML(200, TplActivate)
 			return
 		}
+	}
 
-		log.Trace("User activated: %s", user.Name)
-
-		if err := ctx.Session.Set("uid", user.ID); err != nil {
-			log.Error(fmt.Sprintf("Error setting uid in session: %v", err))
-		}
-		if err := ctx.Session.Set("uname", user.Name); err != nil {
-			log.Error(fmt.Sprintf("Error setting uname in session: %v", err))
-		}
-		if err := ctx.Session.Release(); err != nil {
-			log.Error("Error storing session: %v", err)
+	user.IsActive = true
+	var err error
+	if user.Rands, err = models.GetUserSalt(); err != nil {
+		ctx.ServerError("UpdateUser", err)
+		return
+	}
+	if err := models.UpdateUserCols(user, "is_active", "rands"); err != nil {
+		if models.IsErrUserNotExist(err) {
+			ctx.Error(404)
+		} else {
+			ctx.ServerError("UpdateUser", err)
 		}
-
-		ctx.Flash.Success(ctx.Tr("auth.account_activated"))
-		ctx.Redirect(setting.AppSubURL + "/")
 		return
 	}
 
-	ctx.Data["IsActivateFailed"] = true
-	ctx.HTML(200, TplActivate)
+	log.Trace("User activated: %s", user.Name)
+
+	if err := ctx.Session.Set("uid", user.ID); err != nil {
+		log.Error(fmt.Sprintf("Error setting uid in session: %v", err))
+	}
+	if err := ctx.Session.Set("uname", user.Name); err != nil {
+		log.Error(fmt.Sprintf("Error setting uname in session: %v", err))
+	}
+	if err := ctx.Session.Release(); err != nil {
+		log.Error("Error storing session: %v", err)
+	}
+
+	ctx.Flash.Success(ctx.Tr("auth.account_activated"))
+	ctx.Redirect(setting.AppSubURL + "/")
 }
 
 // ActivateEmail render the activate email page
diff --git a/templates/user/auth/activate.tmpl b/templates/user/auth/activate.tmpl
index c24362bb8..c3f136add 100644
--- a/templates/user/auth/activate.tmpl
+++ b/templates/user/auth/activate.tmpl
@@ -18,7 +18,19 @@
 							<p>{{.i18n.Tr "auth.confirmation_mail_sent_prompt" (.SignedUser.Email|Escape) .ActiveCodeLives | Str2html}}</p>
 						{{end}}
 					{{else}}
-						{{if .IsSendRegisterMail}}
+						{{if .NeedsPassword}}
+							<form class="ui form" action="/user/activate" method="post">
+								<div class="required inline field">
+									<label for="password">{{.i18n.Tr "password"}}</label>
+									<input id="password" name="password" type="password" autocomplete="off" required>
+								</div>
+								<div class="inline field">
+									<label></label>
+									<button class="ui green button">{{.i18n.Tr "install.confirm_password"}}</button>
+								</div>
+								<input id="code" name="code" type="hidden" value="{{.Code}}">
+							</form>
+						{{else if .IsSendRegisterMail}}
 							<p>{{.i18n.Tr "auth.confirmation_mail_sent_prompt" (.Email|Escape) .ActiveCodeLives | Str2html}}</p>
 						{{else if .IsActivateFailed}}
 							<p>{{.i18n.Tr "auth.invalid_code"}}</p>