diff --git a/adm/board_delete.inc.php b/adm/board_delete.inc.php
index 7887859a1..d1803212b 100644
--- a/adm/board_delete.inc.php
+++ b/adm/board_delete.inc.php
@@ -30,4 +30,7 @@ delete_cache_latest($tmp_bo_table);
 
 // 게시판 폴더 전체 삭제
 rm_rf(G4_DATA_PATH.'/file/'.$tmp_bo_table);
+
+// syndication ping
+include G4_BBS_PATH.'/syndi/include/include.adm.board_delete.inc.php';
 ?>
\ No newline at end of file
diff --git a/adm/board_form_update.php b/adm/board_form_update.php
index 7df9c8d2c..58a610b6b 100644
--- a/adm/board_form_update.php
+++ b/adm/board_form_update.php
@@ -280,5 +280,8 @@ if ($fields) {
 
 delete_cache_latest($bo_table);
 
+// syndication ping
+include G4_BBS_PATH.'/syndi/include/include.adm.board_form_update.php';
+
 goto_url("./board_form.php?w=u&bo_table={$bo_table}&{$qstr}");
 ?>
diff --git a/adm/board_list_update.php b/adm/board_list_update.php
index 734dd6f04..75013bdd7 100644
--- a/adm/board_list_update.php
+++ b/adm/board_list_update.php
@@ -53,7 +53,7 @@ if ($_POST['act_button'] == "선택수정") {
     check_token();
 
     // _BOARD_DELETE_ 상수를 선언해야 board_delete.inc.php 가 정상 작동함
-    define("_BOARD_DELETE_", TRUE);
+    define('_BOARD_DELETE_', true);
 
     for ($i=0; $i<count($_POST['chk']); $i++) {
         // 실제 번호를 넘김
diff --git a/adm/boardgroup_form_update.php b/adm/boardgroup_form_update.php
index b5f49c400..8a96cd71f 100644
--- a/adm/boardgroup_form_update.php
+++ b/adm/boardgroup_form_update.php
@@ -66,5 +66,8 @@ if ($w == '') {
     alert('제대로 된 값이 넘어오지 않았습니다.');
 }
 
+// syndication ping
+include G4_BBS_PATH.'/syndi/include/include.adm.boardgroup_form_update.php';
+
 goto_url('./boardgroup_form.php?w=u&amp;gr_id='.$gr_id.'&amp;'.$qstr);
 ?>
diff --git a/bbs/delete.php b/bbs/delete.php
index 5844dee2e..5256025c0 100644
--- a/bbs/delete.php
+++ b/bbs/delete.php
@@ -93,6 +93,9 @@ while ($row = sql_fetch_array($result))
         // 파일테이블 행 삭제
         sql_query(" delete from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ");
 
+		// syndication ping
+		include G4_BBS_PATH.'/syndi/include/include.bbs.delete.php';
+
         $count_write++;
     }
     else
diff --git a/bbs/delete_all.php b/bbs/delete_all.php
index 2885d73d5..6e4467a70 100644
--- a/bbs/delete_all.php
+++ b/bbs/delete_all.php
@@ -106,6 +106,9 @@ for ($i=count($tmp_array)-1; $i>=0; $i--)
             // 파일테이블 행 삭제
             sql_query(" delete from {$g4['board_file_table']} where bo_table = '$bo_table' and wr_id = '{$row['wr_id']}' ");
 
+			// syndication ping
+			include G4_BBS_PATH.'/syndi/include/include.bbs.delete_all.php';
+
             $count_write++;
         }
         else
diff --git a/bbs/move_update.php b/bbs/move_update.php
index 50cc7d142..59c13fe4c 100644
--- a/bbs/move_update.php
+++ b/bbs/move_update.php
@@ -175,6 +175,9 @@ if ($sw == "move")
     sql_query(" update {$g4['board_table']} set bo_count_write = bo_count_write - '$save_count_write', bo_count_comment = bo_count_comment - '$save_count_comment' where bo_table = '$bo_table' ");
 }
 
+// syndication ping
+include G4_BBS_PATH.'/syndi/include/include.bbs.move_update.php';
+
 $msg = '해당 게시물을 선택한 게시판으로 '.$act.' 하였습니다.';
 $opener_href = './board.php?bo_table='.$bo_table.'&amp;page='.$page.'&amp;'.$qstr;
 
diff --git a/bbs/syndi/_common.php b/bbs/syndi/_common.php
new file mode 100644
index 000000000..14553420b
--- /dev/null
+++ b/bbs/syndi/_common.php
@@ -0,0 +1,3 @@
+<?php
+include_once('../../common.php');
+?>
\ No newline at end of file
diff --git a/bbs/syndi/config/site.config.php b/bbs/syndi/config/site.config.php
new file mode 100644
index 000000000..f0af1ab7c
--- /dev/null
+++ b/bbs/syndi/config/site.config.php
@@ -0,0 +1,19 @@
+<?PHP
+// 타임존
+$GLOBALS['syndi_time_zone'] = '+09:00';
+
+// 데이타 인코딩
+$GLOBALS['syndi_from_encoding'] = 'utf-8';
+
+// 도메인 (http:// 제외, 마지막 / 제외)
+$GLOBALS['syndi_tag_domain'] = $_SERVER['HTTP_HOST']; // 도메인을 직접 입력하시는게 좋습니다. (예: 'gnuboard.com')
+
+// 도메인 연결 날짜(년도)
+$GLOBALS['syndi_tag_year'] = '2010';
+
+// 홈페이지 제목
+$GLOBALS['syndi_homepage_title'] = $config['cf_title'];
+
+// Syndication 출력 url (syndi_echo.php의 웹경로)
+$GLOBALS['syndi_echo_url'] = G4_BBS_URL.'/syndi/syndi_echo.php';
+?>
diff --git a/bbs/syndi/func/site.func.php b/bbs/syndi/func/site.func.php
new file mode 100644
index 000000000..b6a9cc632
--- /dev/null
+++ b/bbs/syndi/func/site.func.php
@@ -0,0 +1,440 @@
+<?php
+/**
+ * @file syndi.config.gnuboard4_utf8.php
+ * @author sol (ngleader@gmail.com)
+ * @brief syndication client functions for gnuboard4 utf-8
+ * 
+ * Syndi_getSiteInfo	: 사이트 정보
+ * Syndi_getChannelList	: 사이트의 게시판
+ * Syndi_getArticleList	: 게시물
+ * Syndi_getDeletedList	: 삭제 게시물
+ * Syndi_getChannelNextPage	: Syndi_getChannelList 의 페이징시 다음 페이지
+ * Syndi_getArticleNextPage	: Syndi_getArticleList 의 페이징시 다음 페이지
+ * Syndi_getDeletedNextPage	: Syndi_getDeletedList 의 페이징시 다음 페이지
+ */
+
+
+// include gnuboard config & lib
+include '../config.php';
+include '../'.G4_LIB_DIR.'/common.lib.php';
+include '../'.G4_DATA_DIR.'/dbconfig.php';
+
+$connect_db = sql_connect($mysql_host, $mysql_user, $mysql_password);
+if(!$connect_db) return;
+$GLOBALS['connect_db'] = $connect_db;
+
+sql_select_db($mysql_db, $connect_db);
+
+
+/**
+ * @brief 사이트 정보
+ **/
+function Syndi_getSiteInfo($args)
+{
+	$title = $GLOBALS['syndi_homepage_title'];
+	$tag = SyndicationHandler::getTag('site');
+
+	$oSite = new SyndicationSite;
+	$oSite->setId($tag);
+	$oSite->setTitle($title);
+	$oSite->setUpdated(date('YmdHis'));
+
+	// 홈페이지 주소
+	$link_alternative = sprintf('http://%s',  $GLOBALS['syndi_tag_domain']);
+	$oSite->setLinkAlternative($link_alternative);
+
+	$link_self = sprintf('%s?id=%s&type=%s',$GLOBALS['syndi_echo_url'],$tag,$args->type);
+	$oSite->setLinkSelf($link_self);
+
+	return $oSite;
+}
+
+/**
+ * @brief Channel(게시판) 목록 
+ **/
+function Syndi_getChannelList($args)
+{
+	global $g4;
+
+	$where = '';
+	if($args->target_channel_id) $where .= " and b.bo_table='". mysql_real_escape_string($args->target_channel_id) . "'";
+
+	$sql = "select b.bo_table,b.bo_subject from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id ". $where;
+	$sql .= " order by b.gr_id,b.bo_table";
+
+	if($args->type=='channel')
+	{
+		$sql .= sprintf(" limit %s,%s", ($args->page-1)*$args->max_entry, $args->max_entry);
+	}
+
+	$result = sql_query($sql);
+
+	$channel_list = array();
+	while($row = sql_fetch_array($result))
+	{
+		$row['bo_subject'] = $row['bo_subject']?$row['bo_subject']:$row['bo_table'];
+
+		$tag = SyndicationHandler::getTag('channel',$row['bo_table']);
+		$oChannel = new SyndicationChannel;
+		$oChannel->setId($tag);
+		$oChannel->setTitle($row['bo_subject']);
+		$oChannel->setType('web');
+		$oChannel->setUpdated(date('YmdHis'));
+
+		$link_self = sprintf('%s?id=%s&type=%s',$GLOBALS['syndi_echo_url'],$tag,$args->type);
+		$oChannel->setLinkSelf($link_self);
+
+		// 게시판 웹주소
+		$link_alternative = sprintf('http://%s/bbs/board.php?bo_table=%s', $GLOBALS['syndi_tag_domain'], $row['bo_table']);
+		$oChannel->setLinkAlternative($link_alternative);
+
+		$channel_list[] = $oChannel;
+	}
+
+	sql_free_result($result);
+
+	return $channel_list;
+}
+
+
+/**
+ * @brief 모든 게시판의 게시물을 가져올때, 다음 게시판을 가져옴
+ **/
+function _Syndi_getNextChannelId($channel_id=null)
+{
+	global $g4;
+
+	if(!$channel_id)
+	{
+		$sql = "select b.bo_table from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id";
+		$sql .= " order by b.gr_id,b.bo_table limit 1";
+
+		$row = sql_fetch($sql);
+		sql_free_result($result);
+
+		return $row['bo_table'];
+	}
+
+	$channel_id = mysql_real_escape_string($channel_id);
+
+	$sql = "select b.bo_table from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_table>'$channel_id' and b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id";
+	$sql .= " order by b.gr_id,b.bo_table limit 1";
+
+	$result = sql_query($sql);
+	if(mysql_num_rows($result)==0) return false;
+
+	$row = sql_fetch_array($result);
+	sql_free_result($result);
+
+	return $row['bo_table'];
+}
+
+
+/**
+ * @brief 게시물 목록 
+ **/
+function Syndi_getArticleList($args)
+{
+	global $g4;
+
+	/*
+	$args->target_content_id	//게시물 번호
+	$args->target_channel_id	//게시판 번호
+	$args->start_time			//기간
+	$args->end_time
+	$args->max_entry			//출력 목록당 개수
+	$args->page					//페이지 번호
+	$args->channel_id			//모든 글 출력시 해당 게시판
+	*/
+
+	// all channel articles mysql 3.X, 4.0.X 에서는 sub query가 되지 않는다.
+	if(!$args->target_channel_id)
+	{
+		// $args->channel_id 가 없을 경우 첫번째 게시판을 가져온다.
+		if(!$args->channel_id) $args->channel_id = _Syndi_getNextChannelId();
+		$args->target_channel_id = $args->channel_id;
+		$article_list = Syndi_getArticleList($args);
+		unset($args->target_channel_id);
+
+		if(count($article_list)>0) return $article_list;
+
+		return array();
+	}
+
+	return _Syndi_getArticleList($args);
+}
+
+
+/**
+ * @brief 게시물 목록 
+ **/
+function _Syndi_getArticleList($args)
+{
+	global $g4;
+
+	/*
+	$args->target_content_id	//게시물 번호
+	$args->target_channel_id	//게시판 번호
+	$args->start_time			//기간
+	$args->end_time
+	$args->max_entry			//출력 목록당 개수
+	$args->page					//페이지 번호
+	*/
+
+	$sql = "select count(*) as cnt from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_table='" . mysql_real_escape_string($args->target_channel_id). "' and b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id";
+	$row = sql_fetch_array(sql_query($sql));
+	if($row['cnt']<1) return array();
+
+	$content_table = $t_board.'_'. $args->target_channel_id;
+	$category_table = $t_category.'_'. $args->target_channel_id;
+
+	// get article list
+	$where = " and wr_is_comment=0 ";
+	if($args->target_content_id) $where .= ' and wr_id='. mysql_real_escape_string($args->target_content_id);
+	if($args->start_time) $where .= ' and wr_datetime >= '. _getTime($args->start_time);
+	if($args->end_time) $where .= ' and wr_datetime <= '. _getTime($args->end_time);
+
+	$sql = "select wr_id, ca_name, wr_subject, wr_content, mb_id, wr_name, wr_homepage, wr_email, wr_datetime, wr_last 
+		from " . $g4['write_prefix'] . $args->target_channel_id  . " where 1=1" . $where;
+	$sql .= " order by wr_id desc ";
+	$sql .= sprintf(" limit %s,%s", ($args->page-1)*$args->max_entry, $args->max_entry);
+
+	$result = sql_query($sql);
+	$article_list = array();
+	while($row = sql_fetch_array($result))
+	{
+		$oArticle = new SyndicationArticle;
+		$tag = SyndicationHandler::getTag('article', $args->target_channel_id, $row['wr_id']);
+		$oArticle->setId($tag);
+		$oArticle->setTitle($row['wr_subject']);
+		$oArticle->setContent($row['wr_content']);
+		$oArticle->setType('web');
+		$oArticle->setCategory($row['ca_name']);
+		$oArticle->setName($row['wr_name']);
+		$oArticle->setEmail($row['wr_email']);
+		$oArticle->setUrl($row['wr_homepage']);
+		$oArticle->setPublished(date('YmdHis',_getTime($row['wr_datetime'])));
+		if($row['wr_last']) $oArticle->setUpdated(date('YmdHis',_getTime($row['wr_last'])));
+		
+		// 게시판 웹주소
+		$link_channel_alternative = sprintf('http://%s/bbs/board.php?bo_table=%s',$GLOBALS['syndi_tag_domain'],$args->target_channel_id);
+
+		// 게시물 웹주소
+		$link_alternative = $link_channel_alternative . '&wr_id=' . $row['wr_id'];
+
+		$oArticle->setLinkChannel($tag);
+		$oArticle->setLinkAlternative($link_alternative);
+		$oArticle->setLinkChannelAlternative($link_channel_alternative);
+
+		// add list
+		$article_list[] = $oArticle;
+	}
+
+	sql_free_result($result);
+
+	return $article_list;
+}
+
+
+
+/**
+ * @brief 삭제 게시물 목록 
+ * 삭제된 게시물에 대해 logging이 필요
+ **/
+function Syndi_getDeletedList($args)
+{
+    global $g4;
+	$table = $g4['syndi_log_table'];
+
+	// get delete article list
+	$where = '';
+	if($args->target_content_id) $where .= " and content_id='" . mysql_real_escape_string($args->target_content_id) . "'";
+	if($args->target_channel_id) $where .= " and bbs_id='" . mysql_real_escape_string($args->target_channel_id) . "'";
+	if($args->start_time) $where .= ' and delete_date >= '. $args->start_time;
+	if($args->end_time) $where .= ' and delete_date <= '. $args->end_time;
+
+	$sql = "select content_id, bbs_id, title, link_alternative, delete_date from $table where 1=1" . $where;
+	$sql .= " order by delete_date desc ";	
+	$sql .= sprintf(" limit %s,%s", ($args->page-1)*$args->max_entry, $args->max_entry);
+	$result = sql_query($sql);
+
+	$deleted_list = array();
+	while($row = sql_fetch_array($result))
+	{
+		$oDeleted = new SyndicationDeleted;
+		$tag = SyndicationHandler::getTag('article', $row['bbs_id'], $row['content_id']);
+		$oDeleted->setId($tag);
+		$oDeleted->setTitle($row['title']);
+		$oDeleted->setUpdated($row['delete_date']);
+		$oDeleted->setDeleted($row['delete_date']);
+
+		if(substr($row['link_alternative'],0,2)=='./')
+		{
+			$row['link_alternative'] = 'http://' . $GLOBALS['syndi_tag_domain'] . substr($row['link_alternative'],1);
+		}
+		$oDeleted->setLinkAlternative($row['link_alternative']);
+
+		$deleted_list[] = $oDeleted;
+	}
+
+	sql_free_result($result);
+
+	return $deleted_list;
+
+}
+
+
+/**
+ * @brief Channel 목록 출력시 다음 페이지 번호 
+ * return array('page'=>다음 페이지);
+ **/
+function Syndi_getChannelNextPage($args)
+{
+	global $g4;
+
+	$where = '';
+	if($args->target_channel_id) $where .= " and bo_table='". mysql_real_escape_string($args->target_channel_id) . "'";
+
+	$count_sql = "select count(*) as cnt from " . $g4['board_table'] . "  where bo_read_level=1 and bo_list_level=1 " .$where;
+	$result = sql_query($count_sql);
+	$row = sql_fetch_array($result);
+	sql_free_result($result);
+
+	$total_count = $row['cnt'];
+	$total_page = ceil($total_count / $args->max_entry);
+
+	if($args->page >= $total_page)
+	{
+		return false;
+	}
+	else
+	{
+		return array('page'=>$args->page+1);
+	}
+}
+
+
+
+/**
+ * @brief 게시물 목록 출력시 다음 페이지
+ * return array('page'=>다음 페이지, 'channel_id'=>다음 게시판)
+ **/
+function Syndi_getArticleNextPage($args)
+{
+	global $g4;
+
+	// 사이트 모든 글
+	if(!$args->target_channel_id)
+	{
+		// channel_id 라는 변수로 게시판id를 받는다 (mysql 3.x,4.0.x을 위해)
+		if(!$args->channel_id)
+		{
+			$args->channel_id = _Syndi_getNextChannelId();
+			$args->all_channel = true;
+		}
+
+		$args->target_channel_id = $args->channel_id;
+		$obj = _Syndi_getArticleNextPage($args);
+
+		unset($args->target_channel_id,	$args->all_channel);
+
+		return $obj;
+	}
+	else
+	{
+		return _Syndi_getArticleNextPage($args);
+	}
+}
+
+function _Syndi_getArticleNextPage($args)
+{
+	global $g4;
+
+	$sql = "select count(*) as cnt from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_table='" . mysql_real_escape_string($args->target_channel_id). "' and b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id";
+	
+	if($row['cnt']==0) return false;
+
+	// get article list
+	$where = " and wr_is_comment=0 ";
+	if($args->target_content_id) $where .= ' and wr_id='. mysql_real_escape_string($args->target_content_id);
+	if($args->start_time) $where .= ' and wr_datetime >= '. _getTime($args->start_time);
+	if($args->end_time) $where .= ' and wr_datetime <= '. _getTime($args->end_time);
+
+	$count_sql = "select count(*) as cnt from " . $g4['write_prefix'] . $args->target_channel_id  . " where 1=1 " .$where;
+	$result = sql_query($count_sql);
+
+	$row = sql_fetch_array($result);
+	sql_free_result($result);
+
+	$total_count = $row['cnt'];
+	$total_page = ceil($total_count / $args->max_entry);
+
+	if($args->page >= $total_page)
+	{
+		if($args->all_channel)
+		{
+			$next_channel_id = _Syndi_getNextChannelId($args->target_channel_id);
+			if(!$next_channel_id) return false;
+			return array('page'=>1, 'channel_id'=>$next_channel_id);
+		}
+		else
+		{
+			return false;
+		}
+	}
+	else
+	{
+		return array('page'=>$args->page+1);
+	}
+}
+
+
+/**
+ * @brief 게시물 삭제 목록 출력시 다음 페이지 번호 
+ **/
+function Syndi_getDeletedNextPage($args)
+{
+    global $g4;
+	$table = $g4['syndi_log_table'];
+
+	// get delete article list
+	$where = '';
+	if($args->target_content_id) $where .= " and no='" . mysql_real_escape_string($args->target_content_id) . "'";
+	if($args->target_channel_id) $where .= " and bbs_id='" . mysql_real_escape_string($args->target_channel_id) . "'";
+	if($args->start_time) $where .= ' and delete_date >= '. $args->start_time;
+	if($args->end_time) $where .= ' and delete_date <= '. $args->end_time;
+
+	$count_sql = "select count(*) as cnt from $table where 1=1" .$where;
+	$result = sql_query($count_sql);
+	$row = sql_fetch_array($result);
+	sql_free_result($result);
+	
+	$total_count = $row['cnt'];
+	$total_page = ceil($total_count / $args->max_entry);
+
+	if($args->page >= $total_page)
+	{
+		return array('page'=>0);
+	}
+	else
+	{
+		return array('page'=>$args->page+1);
+	}
+}
+
+
+function _getTime($date)
+{
+	return strtotime($date);
+}
+
+$oSyndicationHandler = &SyndicationHandler::getInstance();
+$oSyndicationHandler->registerFunction('site_info','Syndi_getSiteInfo');
+$oSyndicationHandler->registerFunction('channel_list','Syndi_getChannelList');
+$oSyndicationHandler->registerFunction('channel_next_page','Syndi_getChannelNextPage');
+$oSyndicationHandler->registerFunction('article_list','Syndi_getArticleList');
+$oSyndicationHandler->registerFunction('article_next_page','Syndi_getArticleNextPage');
+$oSyndicationHandler->registerFunction('deleted_list','Syndi_getDeletedList');
+$oSyndicationHandler->registerFunction('deleted_next_page','Syndi_getDeletedNextPage');
+
+?>
diff --git a/bbs/syndi/include/include.adm.board_delete.inc.php b/bbs/syndi/include/include.adm.board_delete.inc.php
new file mode 100644
index 000000000..a419f712d
--- /dev/null
+++ b/bbs/syndi/include/include.adm.board_delete.inc.php
@@ -0,0 +1,29 @@
+<?php
+/**
+ * @file include.adm.board_delete.inc.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 게시판 삭제시 Syndication Ping
+ *        gnuboard4/adm/board_delete.inc.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.adm.board_delete.inc.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+if(!$tmp_bo_table) return;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+$oPing = new SyndicationPing;
+$oPing->setId(SyndicationHandler::getTag('site'));
+$oPing->setType('channel');
+
+// delete log
+$_sql = "delete from {$g4['syndi_log_table']} where  bbs_id='%s'";
+sql_query(sprintf($_sql, $tmp_bo_table));
+	
+$oPing->request();
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.adm.board_form_update.php b/bbs/syndi/include/include.adm.board_form_update.php
new file mode 100644
index 000000000..f643168be
--- /dev/null
+++ b/bbs/syndi/include/include.adm.board_form_update.php
@@ -0,0 +1,23 @@
+<?php
+/**
+ * @file include.adm.board_form_update.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 게시판 삭제시 Syndication Ping
+ *        gnuboard4/adm/board_form_update.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.adm.board_form_update.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+$oPing = new SyndicationPing;
+$oPing->setId(SyndicationHandler::getTag('site'));
+$oPing->setType('channel');
+
+$oPing->request();
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.adm.boardgroup_form_update.php b/bbs/syndi/include/include.adm.boardgroup_form_update.php
new file mode 100644
index 000000000..fb82e76e3
--- /dev/null
+++ b/bbs/syndi/include/include.adm.boardgroup_form_update.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * @file include.adm.boardgroup_form_update.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 게시판 삭제시 Syndication Ping
+ *        gnuboard4/adm/board_delete.inc.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.adm.boardgroup_form_update.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+// group 수정이 아니면
+if(!$_POST[gr_id]) return;
+if($w!='u') return;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+$oPing = new SyndicationPing;
+$oPing->setId(SyndicationHandler::getTag('site'));
+$oPing->setType('channel');
+
+$oPing->request();
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.bbs.delete.php b/bbs/syndi/include/include.bbs.delete.php
new file mode 100644
index 000000000..0ddfcc1c8
--- /dev/null
+++ b/bbs/syndi/include/include.bbs.delete.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * @file include.bbs.delete.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 글 삭제시 Syndication Ping
+ *        gnuboard4/bbs/bbs.delete.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.bbs.delete.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+if(!$write || !$row) return;
+
+// 비회원 access가 불가능 한 게시판이면 pass
+$sql = "select count(*) as cnt from " . $g4['board_table'] . " b, ". $g4['group_table'] . " g where b.bo_table='". $bo_table ."' and b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id";
+$cnt_row = sql_fetch($sql);
+if($cnt_row['cnt']<1) return;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+
+$sql = "select wr_subject from $write_table where wr_id='" .$row['wr_id'] ."'";
+$subject_row = sql_fetch($sql);
+
+$_link = './bbs/board.php?bo_table=%s&wr_id=%s';
+$_sql = "insert into {$g4['syndi_log_table']} (content_id, bbs_id, title, link_alternative, delete_date) values('%s','%s','%s','%s','%s')";
+sql_query(sprintf($_sql, $row['wr_id'], $bo_table, addslashes($subject_row['wr_subject']), sprintf($_link, $bo_table, $row['wr_id']), date('YmdHis')));
+
+$oPing = new SyndicationPing;
+$oPing->setId(SyndicationHandler::getTag('channel', $bo_table));
+$oPing->setType('deleted');
+$oPing->request();
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.bbs.delete_all.php b/bbs/syndi/include/include.bbs.delete_all.php
new file mode 100644
index 000000000..cb9bc40e2
--- /dev/null
+++ b/bbs/syndi/include/include.bbs.delete_all.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * @file include.bbs.delete_all.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 글 삭제시 Syndication Ping
+ *        gnuboard4/bbs/bbs.delete_all.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.bbs.delete_all.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+if(!$write || !$row) return;
+
+// 비회원 access가 불가능 한 게시판이면 pass
+$sql = 'select count(*) as cnt from ' . $g4['board_table'] . ' b, '. $g4['group_table'] . ' g where b.bo_table=\''. $bo_table .'\' and b.bo_read_level=1 and b.bo_list_level=1 and g.gr_use_access=0 and g.gr_id = b.gr_id';
+$cnt_row = sql_fetch($sql);
+if($cnt_row['cnt']<1) return;;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+$sql = "select wr_subject from $write_table where wr_id='" .$row['wr_id'] ."'";
+$subject_row = sql_fetch($sql);
+
+$_link = './bbs/board.php?bo_table=%s&wr_id=%s';
+$_sql = "insert into {$g4['syndi_log_table']} (content_id, bbs_id, title, link_alternative, delete_date) values('%s','%s','%s','%s','%s')";
+sql_query(sprintf($_sql, $row['wr_id'], $bo_table, addslashes($subject_row['wr_subject']), sprintf($_link, $bo_table, $row['wr_id']), date('YmdHis')));
+
+$oPing = new SyndicationPing;
+$oPing->setId(SyndicationHandler::getTag('channel', $bo_table));
+$oPing->setType('deleted');
+$oPing->request();
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.bbs.move_update.php b/bbs/syndi/include/include.bbs.move_update.php
new file mode 100644
index 000000000..d29a19b34
--- /dev/null
+++ b/bbs/syndi/include/include.bbs.move_update.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * @file include.bbs.move_update.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 글 등록/수정시 Syndication Ping
+ *        gnuboard4/bbs/move_update.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.bbs.move_update.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+if($sw != 'move' && $sw != 'copy') return;
+
+$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+// include config & Syndication Ping class
+include_once $syndi_dir . '/config/site.config.php';
+include_once $syndi_dir . '/libs/SyndicationHandler.class.php';
+include_once $syndi_dir . '/libs/SyndicationPing.class.php';
+
+if($sw == "copy")
+{
+	$oPing = new SyndicationPing;
+	$oPing->setId(SyndicationHandler::getTag('channel', $bo_table));
+	$oPing->setType('article');
+	$oPing->request();
+
+	unset($oPing);
+}
+
+for($i=0, $c=count($_POST['chk_bo_table']); $i<$c; $i++) 
+{
+	$oPing = new SyndicationPing;
+	$oPing->setId(SyndicationHandler::getTag('channel', $_POST['chk_bo_table'][$i]));
+	$oPing->setType('article');
+	$oPing->request();
+
+	unset($oPing);
+}
+?>
\ No newline at end of file
diff --git a/bbs/syndi/include/include.bbs.write_update.php b/bbs/syndi/include/include.bbs.write_update.php
new file mode 100644
index 000000000..81655e807
--- /dev/null
+++ b/bbs/syndi/include/include.bbs.write_update.php
@@ -0,0 +1,42 @@
+<?php
+/**
+ * @file include.bbs.write_update.php
+ * @author sol (ngleader@gmail.com)
+ * @brief 글 등록/수정시 Syndication Ping
+ *        gnuboard4/bbs/write_update.php 파일에 추가
+ *        include '../syndi/include/gnuboard4_euckr/include.bbs.write_update.php';
+ */
+if(!defined('_GNUBOARD_')) return;
+
+if(!$board) return;
+
+// 비밀 게시판이면 pass
+if($board['bo_use_secret'] && $secret) return;
+
+// 비회원 사용자가 볼 수 없다면 pass
+if($board['bo_list_level']>1 || $board['bo_view_level']>1) return;
+
+if($w == 'u' && $wr && !$wr['wr_id']) return;
+
+
+// 수정 대상 또는 신규 입력한 id가 있다면 ping을 보냄
+if($wr['wr_id'] || $wr_id)
+{
+	$syndi_dir = realpath(dirname(__FILE__) .'/../');
+
+	// include config & Syndication Ping class
+	include $syndi_dir . '/config/site.config.php';
+	include $syndi_dir . '/libs/SyndicationHandler.class.php';
+	include $syndi_dir . '/libs/SyndicationPing.class.php';
+
+	$oPing = new SyndicationPing;
+	$oPing->setId(SyndicationHandler::getTag('channel', $board['bo_table']));
+	$oPing->setType('article');
+
+	// if deleted 
+	$_sql = "delete from {$g4['syndi_log_table']} where content_id='%s' and bbs_id='%s'";
+	sql_query(sprintf($_sql, $wr_id ? $wr_id : $wr[wr_id], $board['bo_table']));
+		
+	$oPing->request();
+}
+?>
\ No newline at end of file
diff --git a/bbs/syndi/install.php b/bbs/syndi/install.php
new file mode 100644
index 000000000..269c172b2
--- /dev/null
+++ b/bbs/syndi/install.php
@@ -0,0 +1,12 @@
+<?php
+include_once('./_common.php');
+
+if ($is_admin != 'super') {
+    alert('최소관리자만 설치가 가능합니다.');
+}
+
+$sql = " CREATE TABLE IF NOT EXISTS `{$g4['syndi_log_table']}` ( `content_id` int(11) NOT NULL, `bbs_id` varchar(50) NOT NULL, `title` text NOT NULL, `link_alternative` varchar(250) NOT NULL, `delete_date` varchar(14) NOT NULL, PRIMARY KEY  (`content_id`,`bbs_id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 ";
+sql_query($sql, false);
+
+alert('신디케이션 로그 테이블을 생성했습니다.', G4_URL);
+?>
\ No newline at end of file
diff --git a/bbs/syndi/libs/SyndicationArticle.class.php b/bbs/syndi/libs/SyndicationArticle.class.php
new file mode 100644
index 000000000..23f55fbf0
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationArticle.class.php
@@ -0,0 +1,137 @@
+<?php
+/**
+ * @class  SyndicationArticle
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication Article 데이타 클래스
+ **/
+
+class SyndicationArticle extends SyndicationObject
+{
+	var $node = array('id','author','category','title','content','published','updated','link_alternative','link_channel','link_channel_alternative');
+
+	/**
+	 * @brief URI Tag
+	 **/
+	function setId($id)
+	{
+		$this->id = $id;
+	}
+
+	/**
+	 * @brief Author name
+	 **/
+	function setName($name)
+	{
+		$this->name = $name;
+	}
+
+	/**
+	 * @brief Author email
+	 **/
+	function setEmail($email)
+	{
+		$this->email = $email;
+	}
+
+	/**
+	 * @brief Author homepage or blog
+	 **/
+	function setUrl($url)
+	{
+		$this->url = $url;
+	}
+
+	/**
+	 * @brief category or tag of content
+	 **/
+	function setCategory($category)
+	{
+		$this->category = $category;
+	}
+
+	/**
+	 * @brief Title of content
+	 **/
+	function setTitle($title)
+	{
+		$this->title = $title;
+	}
+
+	/**
+	 * @brief content
+	 **/
+	function setContent($content)
+	{
+		$this->content = $content;
+	}
+
+	/**
+	 * @brief Syndication Content Type으로 blog 경우'blog', 일반사이트 경우 'web'
+	 **/
+	function setType($type='web')
+	{
+		$this->type = $type;
+	}
+
+	/**
+	 * @brief Syndication Ping Url
+	 **/
+	function setLinkSelf($link_self)
+	{
+		$this->link_self = $link_self;
+	}
+
+	/**
+	 * @brief Channel Syndication Ping Url
+	 **/
+	function setLinkChannel($link_channel)
+	{
+		$this->link_channel = $link_channel;
+	}
+
+	/**
+	 * @brief Article(게시물) 접근 Url
+	 **/
+	function setLinkAlternative($link_alternative)
+	{
+		$this->link_alternative = $link_alternative;
+	}
+
+	/**
+	 * @brief Channel(게시판) 접근 Url
+	 **/
+	function setLinkChannelAlternative($link_channel_alternative)
+	{
+		$this->link_channel_alternative = $link_channel_alternative;
+	}
+
+	/**
+	 * @brief published time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setPublished($published)
+	{
+		$this->published = $published;
+	}
+
+	/**
+	 * @brief update time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setUpdated($updated)
+	{
+		$this->updated = $updated;
+	}
+
+	function __toString()
+	{
+		$str = '';
+		foreach($this->node as $node){
+			$str .= $this->get($node);
+		}
+
+		return $str;
+	}
+}
+
+?>
diff --git a/bbs/syndi/libs/SyndicationChannel.class.php b/bbs/syndi/libs/SyndicationChannel.class.php
new file mode 100644
index 000000000..0a94b5c9f
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationChannel.class.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * @class  SyndicationChannel
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication Channel(게시판) 데이타 클래스
+ **/
+
+class SyndicationChannel extends SyndicationObject
+{
+	var $node = array('id','title','type','summary','updated','link_rss','link_alternative','link_self','link_next_in_thread');
+
+	/**
+	 * @brief URI Tag
+	 **/
+	function setId($id)
+	{
+		$this->id = $id;
+	}
+
+	/**
+	 * @brief Title of Channel
+	 **/
+	function setTitle($title)
+	{
+		$this->title = $title;
+	}
+
+	/**
+	 * @brief Type of Channel, web or blog
+	 * blog 일경우 setLinkRss()를 등록해야 함
+	 **/
+	function setType($type='web')
+	{
+		$this->type = $type;
+	}
+
+	/**
+	 * @brief Summary of Channel
+	 **/
+	function setSummary($summary)
+	{
+		$this->summary = $summary;
+	}
+
+	/**
+	 * @brief Syndication Ping Url
+	 **/
+	function setLinkSelf($link_self)
+	{
+		$this->link_self = $link_self;
+	}
+
+	/**
+	 * @brief Channel(게시판) 접근 Url
+	 **/
+	function setLinkAlternative($link_alternative)
+	{
+		$this->link_alternative = $link_alternative;
+	}
+
+	/**
+	 * @brief Channel RSS Url (type이 blog면 필수)
+	 **/
+	function setLinkRss($link_rss)
+	{
+		$this->link_rss = $link_rss;
+	}
+
+	/**
+	 * @brief 다음 페이지 Url
+	 **/
+	function setNextPage($obj)
+	{
+		if(!$obj) return;
+
+		if($obj['page']>0) $this->link_next_in_thread = $this->link_self . '&page='. $obj['page'];
+	}
+
+	/**
+	 * @brief update time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setUpdated($updated)
+	{
+		$this->updated = $updated;
+	}
+
+	function __toString()
+	{
+		$str = '';
+		foreach($this->node as $node){
+			$str .= $this->get($node);
+		}
+
+		return $str;
+	}
+}
+?>
\ No newline at end of file
diff --git a/bbs/syndi/libs/SyndicationDeleted.class.php b/bbs/syndi/libs/SyndicationDeleted.class.php
new file mode 100644
index 000000000..396840c07
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationDeleted.class.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * @class  SyndicationDeleted
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication Delete(Article) 데이타 클래스
+ **/
+
+class SyndicationDeleted extends SyndicationObject
+{
+	var $node = array('id','title','deleted','updated','link_alternative');
+
+	/**
+	 * @brief URI Tag
+	 **/
+	function setId($id)
+	{
+		$this->id = $id;
+	}
+
+	/**
+	 * @brief Title of content
+	 **/
+	function setTitle($title)
+	{
+		$this->title = $title;
+	}
+
+	/**
+	 * @brief update time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setUpdated($updated)
+	{
+		$this->updated = $updated;
+	}
+
+	/**
+	 * @brief deleted time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setDeleted($deleted)
+	{
+		$this->deleted = $deleted;
+	}
+
+	/**
+	 * @brief Article(게시물) 접근 Url
+	 **/
+	function setLinkAlternative($link_alternative)
+	{
+		$this->link_alternative = $link_alternative;
+	}
+
+	function __toString()
+	{
+		$str = '';
+
+		foreach($this->node as $node){
+			$str .= $this->get($node);
+		}
+
+		return $str;
+	}
+}
+?>
diff --git a/bbs/syndi/libs/SyndicationHandler.class.php b/bbs/syndi/libs/SyndicationHandler.class.php
new file mode 100644
index 000000000..7a4774e9a
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationHandler.class.php
@@ -0,0 +1,346 @@
+<?php
+/**
+ * @class  SyndicationHandler
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication 데이타 출력 핸들러
+ **/
+
+class SyndicationHandler
+{
+	var $param;				// GET value
+	var $type;				// 출력 내용 : article, deleted, channel, site
+	var $target;			// 출력 대상 : article, channel, site
+	var $target_channel_id;	// 출력 대상 channel(게시판) 번호 또는 유닉한 문자열
+	var $target_content_id;	// 출력 대상 article(게시물) 번호 또는 유닉한 문자열
+	var $register_function = array();
+
+	function &getInstance()
+	{
+		if(!$GLOBALS['__SyndicationHandler__'])
+		{
+			$GLOBALS['__SyndicationHandler__'] = new SyndicationHandler();
+		}
+
+		return $GLOBALS['__SyndicationHandler__'];
+	}
+
+	/**
+	 * @brief initialization.
+	 **/
+	function SyndicationHandler()
+	{
+	}
+
+	/**
+	 * @brief register function
+	 * site_info
+	 * article_list
+	 * deleted_list
+	 * channel_list
+	 * article_next_page
+	 * deleted_next_page
+	 * channel_next_page
+	 **/
+
+	function checkRegisteredFunctions()
+	{
+		$ids = array('site_info','article_list','deleted_list','channel_list','article_next_page','deleted_next_page','channel_next_page');
+
+		if(count($this->register_function) != count($ids)) return false;
+
+		foreach($this->register_function as $id => $func)
+		{
+			if(!in_array($id, $ids) || !is_callable($func))
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	function registerFunction($id, $func)
+	{
+		$this->register_function[$id] = $func;
+	}
+
+	function callFunction($id)
+	{
+		if(!isset($this->register_function[$id]) || !is_callable($this->register_function[$id])) return false;
+
+		return call_user_func($this->register_function[$id], $this->param);
+	}
+
+
+	/**
+	 * @brief set GET Value.
+	 **/
+	function setArgument($args=null)
+	{
+		if(!$args) $args = $_GET;
+
+		$obj = new stdClass;
+		$obj->id = $args['id'];
+
+		if($args['start-time']) $obj->start_time = SyndicationHandler::getDate($args['start-time']);
+		if($args['end-time']) $obj->end_time = SyndicationHandler::getDate($args['end-time']);
+
+		$obj->max_entry = $args['max_entry'];
+		if(!$obj->max_entry) $obj->max_entry = 100;
+
+		$obj->page = $args['page'];
+		if(!$obj->page) $obj->page = 1;
+
+		$obj->type = $args['type'];
+
+		// for getting all article on mysql 3.X, 4.0.X
+		if($args['channel_id']) $obj->channel_id = $args['channel_id'];
+
+		$this->param = $obj;
+		$this->parseTag();
+	}
+
+	/**
+	 * @brief parsing id value(Tag URI)
+	 **/
+	function parseTag()
+	{
+		// tag:domain,{YYYY}:site:
+		// tag:domain,{YYYY}:channel:{channel_id}
+		// tag:domain,{YYYY}:article:{channel_id}-{$article_id}
+		if(!preg_match('/^tag:([^,]+),([0-9]+):(site|channel|article)(.*)$/i',$this->param->id,$matches)) return;
+
+		$this->target = $matches[3];
+		$id = $matches[4];
+		if($id && $id{0}==':') $id = substr($id, 1);
+
+		switch($this->target)
+		{
+			case 'site':
+			break;
+			case 'channel':
+				if(!$id)
+				{
+					$this->target = $this->target_channel_id = $this->target_content_id = null;
+					return;
+				}
+
+				$this->target_channel_id = $id;
+			break;
+			case 'article':
+				if($id && strpos($id,'-')!==false)
+				{
+					list($this->target_channel_id, $this->target_content_id) = explode('-',$id);
+					if(!$this->target_content_id)
+					{
+						$this->target = $this->target_channel_id = $this->target_content_id = null;
+						return;
+					}
+				}
+				else
+				{
+					$this->target = $this->target_channel_id = $this->target_content_id = null;
+					return;
+				}
+			break;
+		}
+
+		if($this->target_channel_id) $this->param->target_channel_id = $this->target_channel_id;
+		if($this->target_content_id) $this->param->target_content_id = $this->target_content_id;
+	}
+
+	/**
+	 * @brief xml for Syndication Server
+	 **/
+	function getXML()
+	{
+		if(!$this->checkRegisteredFunctions()) return '';
+
+		switch($this->target)
+		{
+			// in site
+			case 'site':
+				// get Site info
+				$oSite = $this->callFunction('site_info');
+				if(!$oSite) return '';
+
+				$list_xml = '';
+
+				if(in_array($this->param->type,array('article','deleted','channel')))
+				{
+					$list = $this->callFunction($this->param->type . '_list');
+					if(!$list) $list = array();
+
+					$obj = $this->callFunction($this->param->type . '_next_page');
+					if($obj) $oSite->setNextPage($obj);
+
+					foreach($list as $oObject)
+					{
+						$list_xml .= $oObject->wrapEntry($oObject->__toString());
+					}
+
+					$xml = $oSite->__toString();
+					$xml = $oSite->wrapFeed($xml . $list_xml);
+				}
+				else
+				{
+					$xml = $oSite->__toString();
+					$xml = $oSite->wrapEntry($xml . $list_xml, true);
+				}
+
+			break;
+
+			// in channel
+			case 'channel':
+				// get Channel info
+				$oChannelList = $this->callFunction('channel_list');
+				if(!is_array($oChannelList) || count($oChannelList)==0) return '';
+				$oChannel = $oChannelList[0];
+
+				$list_xml = '';
+
+				if($this->target_channel_id && in_array($this->param->type,array('article','deleted')))
+				{
+					$list = $this->callFunction($this->param->type . '_list');
+
+					if(is_array($list) && count($list))
+					{
+						$obj = $this->callFunction($this->param->type . '_next_page');
+						if($obj) $oChannel->setNextPage($obj);
+
+						foreach($list as $oObject)
+						{
+							$list_xml .= $oObject->wrapEntry($oObject->__toString());
+						}
+					}
+
+					$xml = $oChannel->__toString();
+					$xml = $oChannel->wrapFeed($xml . $list_xml);
+				}
+				else
+				{
+					$xml = $oChannel->__toString();
+					$xml = $oChannel->wrapEntry($xml . $list_xml, true);
+				}
+
+			break;
+
+			// article info
+			case 'article':
+
+				if(in_array($this->param->type,array('article','deleted')))
+				{
+					$list = $this->callFunction($this->param->type . '_list');
+				}
+
+				if(!is_array($list) || count($list)==0) return '';
+
+				$oObject = $list[0];
+				$xml = $oObject->__toString();
+
+				$xml = $oObject->wrapEntry($xml, true);
+
+			break;
+		}
+		
+		if(!$GLOBALS['syndi_from_encoding']) $GLOBALS['syndi_from_encoding'] = 'utf-8';
+		if($xml && strtolower($GLOBALS['syndi_from_encoding']) != 'utf-8' && function_exists('iconv'))
+		{
+			$xml = iconv($GLOBALS['syndi_from_encoding'], 'utf-8//IGNORE', $xml);
+		}
+
+		return $xml;
+	}
+
+	/**
+	 * @brief Tag URI 
+	 **/
+	function getTag($type, $channel_id=null, $article_id=null)
+	{
+		$tag = sprintf('tag:%s,%s:%s' 
+				,$GLOBALS['syndi_tag_domain']
+				,$GLOBALS['syndi_tag_year']
+				,$type);
+
+		if($type=='channel' && $channel_id)
+		{
+			$tag .= ':' . $channel_id;
+		}
+		else if($type=='article' && $channel_id && $article_id)
+		{
+			$tag .= ':' .$channel_id .'-' . $article_id;
+		}
+
+		return $tag;
+	}
+
+	/**
+	 * @brief Timestamp 로 YYYYMMDDHHIISS 변환
+	 **/
+	function getDate($timestamp)
+	{
+		$time = strtotime($timestamp);
+		if($time == -1) $time = SyndicationHandler::ztime(str_replace(array('-','T',':'),'',$timestamp));
+
+		return date('YmdHis', $time);
+	}
+
+	/**
+	 * @brief YYYYMMDDHHIISS에서 Timestamp로 변환
+	 **/
+	function getTimestamp($date)
+	{
+		$time = mktime(substr($date,8,2),substr($date,10,2),substr($date,12,2),substr($date,4,2),substr($date,6,2),substr($date,0,4));
+		$timestamp = date("Y-m-d\\TH:i:s", $time). $GLOBALS['syndi_time_zone'];
+		return $timestamp;
+	}
+
+	function ztime($str)
+	{
+		if(!$str) return;
+		$hour = (int)substr($str,8,2);
+		$min = (int)substr($str,10,2);
+		$sec = (int)substr($str,12,2);
+		$year = (int)substr($str,0,4);
+		$month = (int)substr($str,4,2);
+		$day = (int)substr($str,6,2);
+		if(strlen($str) <= 8) 
+		{
+			$gap = 0;
+		} 
+		else 
+		{
+			$gap = SyndicationHandler::zgap();
+		}
+
+		return mktime($hour, $min, $sec, $month?$month:1, $day?$day:1, $year)+$gap;
+	}
+
+	function zgap() 
+	{
+		$time_zone = $GLOBALS['syndi_time_zone'];
+		if($time_zone < 0) $to = -1; else $to = 1;
+		$t_hour = substr($time_zone, 1, 2) * $to;
+		$t_min = substr($time_zone, 3, 2) * $to;
+
+		$server_time_zone = date("O");
+		if($server_time_zone < 0) $so = -1; else $so = 1;
+		$c_hour = substr($server_time_zone, 1, 2) * $so;
+		$c_min = substr($server_time_zone, 3, 2) * $so;
+
+		$g_min = $t_min - $c_min;
+		$g_hour = $t_hour - $c_hour;
+
+		$gap = $g_min*60 + $g_hour*60*60;
+
+		return $gap;
+	}
+
+	function error($msg)
+	{
+		echo $msg;
+		exit;
+	}
+}
+
+?>
diff --git a/bbs/syndi/libs/SyndicationObject.class.php b/bbs/syndi/libs/SyndicationObject.class.php
new file mode 100644
index 000000000..5c43aad98
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationObject.class.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * @class  SyndicationObject
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication 데이타 타입의 상위 클래스
+ **/
+
+class SyndicationObject
+{
+	var $id;
+	var $title;
+	var $content;
+	var $summary;
+	var $author;
+	var $name;
+	var $email;
+	var $url;
+	var $published;
+	var $updated;
+	var $deleted;
+	var $type;
+	var $link_self;
+	var $link_alternative;
+	var $link_rss;
+	var $link_channel;
+	var $link_channel_alternative;
+	var $link_next_in_thread;
+
+	function SyndicationXml()
+	{
+	}
+
+	function get($node_name)
+	{
+		$node = array('id','author','name','email','url','title','type','summary','content','published','deleted','updated','link_rss','link_alternative','link_self','link_channel','link_channel_alternative','link_next_in_thread');
+		if(!in_array($node_name, $node)) return '';
+
+		if($node_name == 'author')
+		{
+			$str = "<author>\n";
+			$str .= $this->get('name'); 
+			$str .= $this->get('email');
+			$str .= $this->get('url'); 
+			$str .= "</author>\n";
+
+			return $str;
+		}
+
+		$value = $this->{$node_name};
+		if(!$value) return '';
+
+		if(strpos($node_name,'link_')!==false)
+		{
+			$type = str_replace('_','-',substr($node_name, strlen('link_')));
+			return "<link rel=\"".$type."\" href=\"".htmlspecialchars($value)."\" />\n";
+		}
+
+		if(in_array($node_name,array('published','deleted','updated')))
+		{
+			$value = $this->_getTime($value);
+		}
+
+		return sprintf("<%s>%s</%s>\n", $node_name, htmlspecialchars($value) ,$node_name);
+	}
+
+	function _getTime($time)
+	{
+		return SyndicationHandler::getTimestamp($time);
+	}
+
+	function wrapFeed($str)
+	{
+		$return = '<?xml version="1.0" encoding="utf-8"?>';
+		$return .= "\n"; 
+		$return .= '<feed xmlns="http://www.w3.org/2005/Atom">';
+		$return .= "\n"; 
+		$return .= $str;
+		$return .= "</feed>";
+
+		return $return;
+	}
+
+	function wrapEntry($str, $xml_info=false)
+	{
+		if($xml_info)
+		{
+			$return = '<?xml version="1.0" encoding="utf-8"?>';
+			$return .= "\n"; 
+			$return .= '<entry xmlns="http://www.w3.org/2005/Atom">';
+			$return .= "\n"; 
+		}
+		else
+		{
+			$return .= "<entry>\n";
+		}
+
+		$return .= $str;
+		$return .= "</entry>\n";
+
+		return $return;
+	}
+}
+
+?>
diff --git a/bbs/syndi/libs/SyndicationPing.class.php b/bbs/syndi/libs/SyndicationPing.class.php
new file mode 100644
index 000000000..484ccdcf9
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationPing.class.php
@@ -0,0 +1,105 @@
+<?php
+/**
+ * @class  SyndicationPing
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication Ping Request 클래스
+ **/
+
+class SyndicationPing
+{
+	// Ping Server
+	var $ping_host = 'syndication.openapi.naver.com';
+	var $client;
+	var $type = 'article';
+	var $id;
+	var $start_time;
+	var $end_time;
+	var $max_entry;
+	var $page;
+
+	function setId($id)
+	{
+		$this->id = $id;
+	}
+
+	function setType($type)
+	{
+		$this->type = $type;	
+	}
+
+	function setStartTime($start_time)
+	{
+		if($start_time)
+		{
+			$this->start_time = $this->_convertTime($start_time);
+		}
+	}
+
+	function setEndTime($end_time)
+	{
+		if($end_time)
+		{
+			$this->end_time = $this->_convertTime($end_time);
+		}
+	}
+
+	function _convertTime($time)
+	{
+		return  str_replace('+','%2b',$time);
+	}
+
+	function setMaxEntry($max_entry)
+	{
+		if($max_entry > 0 && $max_entry <= 10000)
+		{
+			$this->max_entry = $max_entry;
+		}
+	}
+
+	function setPage($page)
+	{
+		if($page > 0 && $page <= 10000)
+		{
+			$this->page = $page;
+		}
+	}
+
+	function getBody()
+	{
+		$str = $GLOBALS['syndi_echo_url'];
+		$str .= '?id=' . $this->id;
+		$str .= '&type=' . $this->type;
+		if($this->start_time && $this->end_time)
+		{
+			$str .= '&start_time=' . $this->start_time;
+			$str .= '&end_time=' . $this->end_time;
+		}
+		if($this->max_entry) $str .= '&max_entry=' . $this->max_entry;
+		if($this->page) $str .= '&page=' . $this->page;
+
+		return 'link='.urlencode($str);
+	}
+
+	function request()
+	{
+		$body = $this->getBody();
+		if(!$body) return false;
+
+		$header = "POST /ping/ HTTP/1.0\r\n".
+				"User-Agent: request\r\n".
+				"Host: " . $this->ping_host . "\r\n".
+				"Content-Type: application/x-www-form-urlencoded\r\n".
+				"Content-Length: ". strlen($body) ."\r\n".
+				"\r\n".
+				$body;
+
+		$fp = @fsockopen($this->ping_host, '80', $errno, $errstr, 5); 
+		if(!$fp) return false;
+
+		fputs($fp, $header);
+		fclose($fp);
+
+		return true;
+	}
+}
+?>
diff --git a/bbs/syndi/libs/SyndicationSite.class.php b/bbs/syndi/libs/SyndicationSite.class.php
new file mode 100644
index 000000000..26ee64dbe
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationSite.class.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * @class  SyndicationSite
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication Site 정보 클래스
+ **/
+
+class SyndicationSite extends SyndicationObject
+{
+	var $node = array('id','title','link_self','link_alternative','link_next_in_thread','updated');
+
+	/**
+	 * @brief URI Tag
+	 **/
+	function setId($id)
+	{
+		$this->id = $id;
+	}
+
+	/**
+	 * @brief Title of Site
+	 **/
+	function setTitle($title)
+	{
+		$this->title = $title;
+	}
+
+	/**
+	 * @brief Syndication Ping Url
+	 **/
+	function setLinkSelf($link_self)
+	{
+		$this->link_self = $link_self;
+	}
+
+	/**
+	 * @brief 접근 Url
+	 **/
+	function setLinkAlternative($link_alternative)
+	{
+		$this->link_alternative = $link_alternative;
+	}
+	
+	/**
+	 * @brief 다음 페이지 Url
+	 **/
+	function setNextPage($obj)
+	{
+		if(!$obj) return;
+
+		if($obj['page']>0) $this->link_next_in_thread = $this->link_self . '&page='. $obj['page'];
+		if($obj['channel_id']) $this->link_next_in_thread .= '&channel_id='. $obj['channel_id'];
+	}
+
+	/**
+	 * @brief update time
+	 * 'YYYYMMDDHHIISS' type
+	 **/
+	function setUpdated($updated)
+	{
+		$this->updated = $updated;
+	}
+
+	function __toString()
+	{
+		$str = '';
+		foreach($this->node as $node){
+			$str .= $this->get($node);
+		}
+
+		return $str;
+	}
+}
+?>
\ No newline at end of file
diff --git a/bbs/syndi/libs/SyndicationStatus.class.php b/bbs/syndi/libs/SyndicationStatus.class.php
new file mode 100644
index 000000000..977e194a0
--- /dev/null
+++ b/bbs/syndi/libs/SyndicationStatus.class.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * @class  SyndicationStatus
+ * @author sol (ngleader@gmail.com)
+ * @brief  Syndication 상태 정보 클래스
+ **/
+
+class SyndicationStatus
+{
+	// Status Server
+	var $status_host = 'syndication.openapi.naver.com';
+	var $site;
+
+	function setSite($site)
+	{
+		$this->site = $site;
+	}
+
+	function request()
+	{
+		if(!$this->site) return false;
+
+		$header = "GET /status/?site=".$this->site." HTTP/1.0\r\n".
+				"Host: " . $this->status_host . "\r\n\r\n";
+
+		$fp = @fsockopen($this->status_host, '80', $errno, $errstr); 
+		if(!$fp) return false;
+
+		$output = '';
+
+		fputs($fp, $header);
+		while(!feof($fp)){
+			$output .= fgets($fp, 1024);
+		}
+		fclose($fp);
+
+		$output = substr($output, strpos($output, "\r\n\r\n")+4); 
+		return $this->_parse($output);
+	}
+
+	function _parse($data)
+	{
+		preg_match_all('@\<([a-z_0-9=\" ]+)\>([^\<]+)\</@', $data, $matches);
+		if(!$matches[2]) return false;
+
+		$output = array('article'=>array());
+
+		for($i=0,$c=count($matches[0]);$i<$c;$i++){
+			if(strpos($matches[1][$i], 'date="')!==false){
+				$date = substr($matches[1][$i],14,8);
+				$output['article'][$date] = $matches[2][$i];
+			}else{
+				$output[$matches[1][$i]] = $matches[2][$i];
+			}
+		}
+		
+		return $output;
+	}
+}
+
+/*
+$oStatus = new SyndicationStatus;
+$oStatus->setSite('domain.com');
+$output = $oStatus->request();
+
+$output data fields
+error	: 0이 아닌 경우 에러 
+message	: 에러 메세지
+site_url	: site url
+site_name	: site name
+first_update	: Syndication 서버에 처음 등록된 시간
+last_update		: Syndication 서버에 최근 갱신 시간
+status			: site 상태 
+visit_ok_count	: ping 연속 성공 횟수
+visit_fail_count	: ping 실패 횟수
+*/
+?>
diff --git a/bbs/syndi/syndi_echo.php b/bbs/syndi/syndi_echo.php
new file mode 100644
index 000000000..5c103f128
--- /dev/null
+++ b/bbs/syndi/syndi_echo.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * @file syndi_echo.php
+ * @author sol (ngleader@gmail.com)
+ * @brief Print Syndication Data XML
+ */
+
+header("Content-Type: text/html; charset=UTF-8");
+header("Pragma: no-cache");
+
+if(version_compare(PHP_VERSION, '5.3.0') >= 0)
+{
+	date_default_timezone_set(@date_default_timezone_get());		
+}
+
+error_reporting(E_ALL & ~E_NOTICE & ~E_STRICT);
+
+
+$syndi_path = dirname(__FILE__);
+
+// include class
+include $syndi_path . '/libs/SyndicationHandler.class.php';
+include $syndi_path . '/libs/SyndicationObject.class.php';
+include $syndi_path . '/libs/SyndicationSite.class.php';
+include $syndi_path . '/libs/SyndicationChannel.class.php';
+include $syndi_path . '/libs/SyndicationArticle.class.php';
+include $syndi_path . '/libs/SyndicationDeleted.class.php';
+
+// config & custom func for site
+include $syndi_path . '/config/site.config.php';
+include $syndi_path . '/func/site.func.php';
+
+$oSyndicationHandler = &SyndicationHandler::getInstance();
+$oSyndicationHandler->setArgument();
+
+echo $oSyndicationHandler->getXML();
+?>
diff --git a/bbs/write_update.php b/bbs/write_update.php
index 330bde8d1..8e7d12270 100644
--- a/bbs/write_update.php
+++ b/bbs/write_update.php
@@ -459,6 +459,8 @@ if ($w == '' || $w == 'r') {
     }
 }
 
+// syndication ping
+include G4_BBS_PATH.'/syndi/include/include.bbs.write_update.php';
 
 //------------------------------------------------------------------------------
 // 가변 파일 업로드
@@ -610,5 +612,5 @@ delete_cache_latest($bo_table);
 if ($file_upload_msg)
     alert($file_upload_msg, G4_HTTPS_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.'&amp;page='.$page.$qstr);
 else
-    goto_url(G4_HTTPS_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.'&amp;page='.$page.$qstr);
+    goto_url(G4_HTTPS_BBS_URL.'/board.php?bo_table='.$bo_table.'&amp;wr_id='.$wr_id.$qstr);
 ?>
diff --git a/install/gnuboard4s.sql b/install/gnuboard4s.sql
index e517dd1ee..74dac5354 100644
--- a/install/gnuboard4s.sql
+++ b/install/gnuboard4s.sql
@@ -734,4 +734,20 @@ CREATE TABLE IF NOT EXISTS `g4s_uniqid` (
   PRIMARY KEY (`uq_id`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
 
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `g4s_syndi_log`
+--
+
+DROP TABLE IF EXISTS `g4s_syndi_log`;
+CREATE TABLE IF NOT EXISTS `g4s_syndi_log` (
+  `content_id` int(11) NOT NULL, 
+  `bbs_id` varchar(50) NOT NULL, 
+  `title` text NOT NULL,
+  `link_alternative` varchar(250) NOT NULL, 
+  `delete_date` varchar(14) NOT NULL, 
+  PRIMARY KEY  (`content_id`,`bbs_id`)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+
 -- --------------------------------------------------------
\ No newline at end of file
diff --git a/install/install_db.php b/install/install_db.php
index f9a6ad89d..269822395 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -197,6 +197,7 @@ fwrite($f, "\$g4['scrap_table'] = G4_TABLE_PREFIX.'scrap'; // 게시글 스크
 fwrite($f, "\$g4['visit_table'] = G4_TABLE_PREFIX.'visit'; // 방문자 테이블\n");
 fwrite($f, "\$g4['visit_sum_table'] = G4_TABLE_PREFIX.'visit_sum'; // 방문자 합계 테이블\n");
 fwrite($f, "\$g4['uniqid_table'] = G4_TABLE_PREFIX.'uniqid'; // 유니크한 값을 만드는 테이블\n");
+fwrite($f, "\$g4['syndi_log_table'] = G4_TABLE_PREFIX.'syndi_log'; // 네이버 신디케이션 컨텐츠 삭제 로그 테이블\n");
 fwrite($f, "?>");
 
 fclose($f);
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 3d92ea8c4..d7e16f719 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -1613,8 +1613,9 @@ function convert_charset($from_charset, $to_charset, $str)
 // mysql_real_escape_string 의 alias 기능을 한다.
 function escape_trim($field)
 {
-    if ($field)
-        return mysql_real_escape_string(trim($field));
+    if ($field) {
+        return mysql_real_escape_string(@trim($field));
+    }
 }