From 8893b112fa2dfda5576545658a686e1a5134123e Mon Sep 17 00:00:00 2001
From: thisgun <thisgun@naver.com>
Date: Thu, 21 Nov 2024 11:58:55 +0900
Subject: [PATCH] =?UTF-8?q?=EC=9D=BC=EB=B6=80=20=ED=8A=B9=EC=88=98?=
 =?UTF-8?q?=EB=AC=B8=EC=9E=90=EA=B0=80=20mysql=20charset=20=EC=9D=B4=20uft?=
 =?UTF-8?q?8=20=EC=9D=B8=20=EA=B2=BD=EC=9A=B0=20=EA=B8=B0=EB=A1=9D?=
 =?UTF-8?q?=EC=9D=B4=20=EC=95=88=EB=90=98=EB=8A=94=20=ED=98=84=EC=83=81=20?=
 =?UTF-8?q?=EC=88=98=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 bbs/write_update.php |  6 ++++++
 lib/common.lib.php   | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/bbs/write_update.php b/bbs/write_update.php
index 1f6e151a8..2cfb00601 100644
--- a/bbs/write_update.php
+++ b/bbs/write_update.php
@@ -31,6 +31,9 @@ $wr_subject = '';
 if (isset($_POST['wr_subject'])) {
     $wr_subject = substr(trim($_POST['wr_subject']),0,255);
     $wr_subject = preg_replace("#[\\\]+$#", "", $wr_subject);
+    if (function_exists('normalize_utf8_string')) {
+        $wr_subject = normalize_utf8_string($wr_subject);
+    }
 }
 if ($wr_subject == '') {
     $msg[] = '<strong>제목</strong>을 입력하세요.';
@@ -40,6 +43,9 @@ $wr_content = '';
 if (isset($_POST['wr_content'])) {
     $wr_content = substr(trim($_POST['wr_content']),0,65536);
     $wr_content = preg_replace("#[\\\]+$#", "", $wr_content);
+    if (function_exists('normalize_utf8_string')) {
+        $wr_content = normalize_utf8_string($wr_content);
+    }
 }
 if ($wr_content == '') {
     $msg[] = '<strong>내용</strong>을 입력하세요.';
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 8eba526d1..dd339a181 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2280,6 +2280,24 @@ function _callback_bad_tag_convert($matches){
     return "<div class=\"embedx\">보안문제로 인하여 관리자 아이디로는 embed 또는 object 태그를 볼 수 없습니다. 확인하시려면 관리권한이 없는 다른 아이디로 접속하세요.</div>";
 }
 
+function normalize_utf8_string($string) {
+    // utf8mb4 환경과 mb_ord 함수가 지원되지 않는 환경에서는 제외한다.
+    if (G5_DB_CHARSET === 'utf8mb4' || !function_exists('mb_ord')) {
+        return $string;
+    }
+    
+    // Unicode 특수 문자를 일반 문자로 변환
+    $normalized = preg_replace_callback('/[\x{1D400}-\x{1D7FF}]/u', '_callback_normalizeString', $string);
+
+    return $normalized;
+}
+
+function _callback_normalizeString($matches){
+    $charCode = mb_ord($matches[0], 'UTF-8');
+    // 변환 테이블에서 일반 문자로 매핑
+    return chr(($charCode - 0x1D400) % 26 + ord('A'));
+}
+
 // 토큰 생성
 function _token()
 {