From 854fef47192b45517d112e630fe2afa830432253 Mon Sep 17 00:00:00 2001
From: Laria Carolin Chabowski <laria@laria.me>
Date: Fri, 25 Sep 2020 22:26:52 +0200
Subject: Cast POSTed data into strings before passing it into Esc::esc

---
 ratatoeskr/frontend.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/ratatoeskr/frontend.php b/ratatoeskr/frontend.php
index f49e61e..0bac1e4 100644
--- a/ratatoeskr/frontend.php
+++ b/ratatoeskr/frontend.php
@@ -454,9 +454,9 @@ $ste->register_tag("comment_form", function ($ste, $params, $sub) {
     $previewbtn = $ste->evalbool(@$params["previewbtn"]) ? " <input type=\"submit\" name=\"preview_comment\" value=\"{$translation["comment_form_preview"]}\" />" : "";
 
     if ($ste->evalbool(@$params["default"])) {
-        $form_body = "<p>{$translation["comment_form_name"]}: <input type=\"text\" name=\"author_name\" value=\"" . Esc::esc(@$_POST["author_name"]) . "\" /></p>
-<p>{$translation["comment_form_mail"]}: <input type=\"text\" name=\"author_mail\" value=\"" . Esc::esc(@$_POST["author_mail"]) . "\" /></p>
-<p>{$translation["comment_form_text"]}:<br /><textarea name=\"comment_text\" cols=\"50\" rows=\"10\">" . Esc::esc(@$_POST["comment_text"]) . "</textarea></p>
+        $form_body = "<p>{$translation["comment_form_name"]}: <input type=\"text\" name=\"author_name\" value=\"" . Esc::esc((string)$_POST["author_name"] ?? '') . "\" /></p>
+<p>{$translation["comment_form_mail"]}: <input type=\"text\" name=\"author_mail\" value=\"" . Esc::esc((string)$_POST["author_mail"] ?? '') . "\" /></p>
+<p>{$translation["comment_form_text"]}:<br /><textarea name=\"comment_text\" cols=\"50\" rows=\"10\">" . Esc::esc((string)@$_POST["comment_text"] ?? '') . "</textarea></p>
 <p><input type=\"submit\" name=\"post_comment\" value=\"{$translation["comment_form_submit"]}\" />$previewbtn</p>";
     } else {
         $ste->vars["current"]["oldcomment"] = [
-- 
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