From 81a509d5bfca69c678e0c1eb66f6731db61c222c Mon Sep 17 00:00:00 2001
From: rub <rub@piwigo.org>
Date: Sat, 16 Feb 2008 13:22:47 +0000
Subject: Resolved issue 0000712: PWG-ERROR-VERSION on remote synchronization

git-svn-id: http://piwigo.org/svn/branches/branch-1_7@2212 68402e56-0260-453c-a942-63ccdbb3a9ee
---
 include/common.inc.php                 |  3 ++-
 include/functions_xml.inc.php          | 44 +++++++++++++++++++++++++++------
 include/php_compat/preg_last_error.php | 45 ++++++++++++++++++++++++++++++++++
 3 files changed, 83 insertions(+), 9 deletions(-)
 create mode 100644 include/php_compat/preg_last_error.php

diff --git a/include/common.inc.php b/include/common.inc.php
index f4fafa1c3..ef772747f 100644
--- a/include/common.inc.php
+++ b/include/common.inc.php
@@ -2,7 +2,7 @@
 // +-----------------------------------------------------------------------+
 // | PhpWebGallery - a PHP based picture gallery                           |
 // | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
-// | Copyright (C) 2003-2007 PhpWebGallery Team - http://phpwebgallery.net |
+// | Copyright (C) 2003-2008 PhpWebGallery Team - http://phpwebgallery.net |
 // +-----------------------------------------------------------------------+
 // | branch        : BSF (Best So Far)
 // | file          : $Id$
@@ -125,6 +125,7 @@ if (!defined('PHPWG_INSTALLED'))
 foreach( array(
   'array_intersect_key', //PHP 5 >= 5.1.0RC1
   'hash_hmac', //(hash) - enabled by default as of PHP 5.1.2
+  'preg_last_error', // PHP 5 >= 5.2.0
   ) as $func)
 {
   if (!function_exists($func))
diff --git a/include/functions_xml.inc.php b/include/functions_xml.inc.php
index 7c388d292..ba0f11737 100644
--- a/include/functions_xml.inc.php
+++ b/include/functions_xml.inc.php
@@ -2,10 +2,10 @@
 // +-----------------------------------------------------------------------+
 // | PhpWebGallery - a PHP based picture gallery                           |
 // | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
-// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// | Copyright (C) 2003-2008 PhpWebGallery Team - http://phpwebgallery.net |
 // +-----------------------------------------------------------------------+
 // | branch        : BSF (Best So Far)
-// | file          : $RCSfile$
+// | file          : $Id$
 // | last update   : $Date$
 // | last modifier : $Author$
 // | revision      : $Revision$
@@ -65,7 +65,7 @@ function encodeAttribute( $attribute, $value )
 {
   return $attribute.'="'.htmlspecialchars($value, ENT_QUOTES).'" ';
 }
-	
+
 // The function getChild returns the first child
 // exemple : getChild( "<table><tr>XXX</tr><tr>YYY</tr></table>", "tr" )
 //           returns "<tr>XXX</tr>"
@@ -74,8 +74,19 @@ function getChild( $document, $node )
   $regex = '/<'.$node.'(\s+'.ATT_REG.'="'.VAL_REG.'")*';
   $regex.= '(\s*\/>|>.*<\/'.$node.'>)/U';
 
-  preg_match( $regex, $document, $out );
-  return $out[0];
+  if
+    (
+      preg_match( $regex, $document, $out )
+      or
+      preg_last_error() == PREG_NO_ERROR
+    )
+  {
+    return $out[0];
+  }
+  else
+  {
+    die('getChild: error ['.preg_last_error().'] with preg_match function');
+  }
 }
 
 // getChildren returns a list of the children identified by the $node
@@ -89,14 +100,31 @@ function getChildren( $document, $node )
   $regex = '/<'.$node.'(\s+'.ATT_REG.'="'.VAL_REG.'")*';
   $regex.= '(\s*\/>|>.*<\/'.$node.'>)/U';
 
-  preg_match_all( $regex, $document, $out );
-  return $out[0];
+  if
+    (
+      preg_match_all( $regex, $document, $out )
+      or
+      preg_last_error() == PREG_NO_ERROR
+    )
+  {
+    return $out[0];
+  }
+  else
+  {
+    die('getChild: error ['.preg_last_error().'] with preg_match_all function');
+  }
 }
-	
+
 // get_CodeXML places the content of a text file in a PHP variable and
 // return it. If the file can't be opened, returns false.
 function getXmlCode( $filename )
 {
+  if (function_exists('ini_set'))
+  {
+    // limit must be growed with php5 and "big" listing file
+    ini_set("pcre.backtrack_limit", pow(2, 32));
+  }
+
   $file = fopen( $filename, 'r' );
   if ( !$file )
   {
diff --git a/include/php_compat/preg_last_error.php b/include/php_compat/preg_last_error.php
new file mode 100644
index 000000000..38dc1fd5b
--- /dev/null
+++ b/include/php_compat/preg_last_error.php
@@ -0,0 +1,45 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2008 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $Id$
+// | last update   : $Date$
+// | last modifier : $Author$
+// | revision      : $Revision$
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+// http://www.php.net/manual/fr/function.preg-last-error.php
+// PHP 5 >= 5.2.0
+if (!defined('PREG_NO_ERROR'))
+  define('PREG_NO_ERROR', 0);
+if (!defined('PREG_INTERNAL_ERROR'))
+  define('PREG_INTERNAL_ERROR', 1);
+if (!defined('PREG_BACKTRACK_LIMIT_ERROR'))
+  define('PREG_BACKTRACK_LIMIT_ERROR', 2);
+if (!defined('PREG_RECURSION_LIMIT_ERROR'))
+  define('PREG_RECURSION_LIMIT_ERROR', 3);
+if (!defined('PREG_BAD_UTF8_ERROR'))
+  define('PREG_BAD_UTF8_ERROR', 4);
+
+function preg_last_error()
+{
+  return PREG_NO_ERROR;
+}
+?>
\ No newline at end of file
-- 
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