diff -r e3d7322305bf -r 5e1f1e916419 punbb/include/xml.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/punbb/include/xml.php	Sat Apr 05 23:56:45 2008 -0400
@@ -0,0 +1,213 @@
+<?php
+/***********************************************************************
+
+  Copyright (C) 2002-2008  PunBB.org
+
+  This file is part of PunBB.
+
+  PunBB 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; either version 2 of the License,
+  or (at your option) any later version.
+
+  PunBB 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
+
+************************************************************************/
+
+
+// Make sure no one attempts to run this script "directly"
+if (!defined('PUN'))
+	exit;
+
+
+//
+// Parse XML data into an array
+//
+function xml_to_array($raw_xml)
+{
+	$xml_parser = xml_parser_create();
+	xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);
+	xml_parser_set_option($xml_parser, XML_OPTION_SKIP_WHITE, 0);
+	xml_parse_into_struct($xml_parser, $raw_xml, $vals);
+	xml_parser_free($xml_parser);
+
+	$_tmp = '';
+	foreach ($vals as $xml_elem)
+	{
+		$x_tag = $xml_elem['tag'];
+		$x_level = $xml_elem['level'];
+		$x_type = $xml_elem['type'];
+
+		if ($x_level != 1 && $x_type == 'close')
+		{
+			if (isset($multi_key[$x_tag][$x_level]))
+				$multi_key[$x_tag][$x_level] = 1;
+			else
+				$multi_key[$x_tag][$x_level] = 0;
+		}
+
+		if ($x_level != 1 && $x_type == 'complete')
+		{
+			if ($_tmp == $x_tag)
+				$multi_key[$x_tag][$x_level] = 1;
+
+			$_tmp = $x_tag;
+		}
+	}
+
+	foreach ($vals as $xml_elem)
+	{
+		$x_tag = $xml_elem['tag'];
+		$x_level = $xml_elem['level'];
+		$x_type = $xml_elem['type'];
+
+		if ($x_type == 'open')
+			$level[$x_level] = $x_tag;
+
+		$start_level = 1;
+		$php_stmt = '$xml_array';
+		if ($x_type == 'close' && $x_level != 1)
+			$multi_key[$x_tag][$x_level]++;
+
+		while ($start_level < $x_level)
+		{
+			$php_stmt .= '[$level['.$start_level.']]';
+			if (isset($multi_key[$level[$start_level]][$start_level]) && $multi_key[$level[$start_level]][$start_level])
+				$php_stmt .= '['.($multi_key[$level[$start_level]][$start_level]-1).']';
+
+			++$start_level;
+		}
+
+		$add = '';
+		if (isset($multi_key[$x_tag][$x_level]) && $multi_key[$x_tag][$x_level] && ($x_type == 'open' || $x_type == 'complete'))
+		{
+			if (!isset($multi_key2[$x_tag][$x_level]))
+				$multi_key2[$x_tag][$x_level] = 0;
+			else
+				$multi_key2[$x_tag][$x_level]++;
+
+			$add = '['.$multi_key2[$x_tag][$x_level].']';
+		}
+
+		if (isset($xml_elem['value']) && trim($xml_elem['value']) != '' && !array_key_exists('attributes', $xml_elem))
+		{
+			if ($x_type == 'open')
+				$php_stmt_main = $php_stmt.'[$x_type]'.$add.'[\'content\'] = $xml_elem[\'value\'];';
+			else
+				$php_stmt_main = $php_stmt.'[$x_tag]'.$add.' = $xml_elem[\'value\'];';
+
+			eval($php_stmt_main);
+		}
+
+		if (array_key_exists('attributes', $xml_elem))
+		{
+			if (isset($xml_elem['value']))
+			{
+				$php_stmt_main = $php_stmt.'[$x_tag]'.$add.'[\'content\'] = $xml_elem[\'value\'];';
+				eval($php_stmt_main);
+			}
+
+			foreach ($xml_elem['attributes'] as $key=>$value)
+			{
+				$php_stmt_att=$php_stmt.'[$x_tag]'.$add.'[\'attributes\'][$key] = $value;';
+				eval($php_stmt_att);
+			}
+		}
+	}
+
+	if (isset($xml_array))
+	{
+		// Make sure there's an array of notes (even if there is only one)
+		if (isset($xml_array['extension']['note']))
+		{
+			if (!is_array(current($xml_array['extension']['note'])))
+				$xml_array['extension']['note'] = array($xml_array['extension']['note']);
+		}
+		else
+			$xml_array['extension']['note'] = array();
+
+		// Make sure there's an array of hooks (even if there is only one)
+		if (isset($xml_array['extension']['hooks']) && isset($xml_array['extension']['hooks']['hook']))
+		{
+			if (!is_array(current($xml_array['extension']['hooks']['hook'])))
+				$xml_array['extension']['hooks']['hook'] = array($xml_array['extension']['hooks']['hook']);
+		}
+	}
+
+	return isset($xml_array) ? $xml_array : array();
+}
+
+
+//
+// Validate the syntax of an extension manifest file
+//
+function validate_manifest($xml_array, $folder_name)
+{
+	global $lang_admin, $pun_config;
+
+	$errors = array();
+
+	if (!isset($xml_array['extension']) || !is_array($xml_array['extension']))
+		$errors[] = $lang_admin['extension root error'];
+	else
+	{
+		$ext = $xml_array['extension'];
+		if (!isset($ext['attributes']['engine']))
+			$errors[] = $lang_admin['extension/engine error'];
+		else if ($ext['attributes']['engine'] != '1.0')
+			$errors[] = $lang_admin['extension/engine error2'];
+		if (!isset($ext['id']) || $ext['id'] == '')
+			$errors[] = $lang_admin['extension/id error'];
+		if ($ext['id'] != $folder_name)
+			$errors[] = $lang_admin['extension/id error2'];
+		if (!isset($ext['title']) || $ext['title'] == '')
+			$errors[] = $lang_admin['extension/title error'];
+		if (!isset($ext['version']) || $ext['version'] == '')
+			$errors[] = $lang_admin['extension/version error'];
+		if (!isset($ext['description']) || $ext['description'] == '')
+			$errors[] = $lang_admin['extension/description error'];
+		if (!isset($ext['author']) || $ext['author'] == '')
+			$errors[] = $lang_admin['extension/author error'];
+		if (!isset($ext['minversion']) || $ext['minversion'] == '')
+			$errors[] = $lang_admin['extension/minversion error'];
+		if (isset($ext['minversion']) && version_compare(clean_version($pun_config['o_cur_version']), clean_version($ext['minversion']), '<'))
+			$errors[] = sprintf($lang_admin['extension/minversion error2'], $ext['minversion']);
+		if (!isset($ext['maxtestedon']) || $ext['maxtestedon'] == '')
+			$errors[] = $lang_admin['extension/maxtestedon error'];
+		if (isset($ext['note']))
+		{
+			foreach ($ext['note'] as $note)
+			{
+				if (!isset($note['content']) || $note['content'] == '')
+					$errors[] = $lang_admin['extension/note error'];
+				if (!isset($note['attributes']['type']) || $note['attributes']['type'] == '')
+					$errors[] = $lang_admin['extension/note error2'];
+			}
+		}
+		if (isset($ext['hooks']) && is_array($ext['hooks']))
+		{
+			if (!isset($ext['hooks']['hook']) || !is_array($ext['hooks']['hook']))
+				$errors[] = $lang_admin['extension/hooks/hook error'];
+			else
+			{
+				foreach ($ext['hooks']['hook'] as $hook)
+				{
+					if (!isset($hook['content']) || $hook['content'] == '')
+						$errors[] = $lang_admin['extension/hooks/hook error'];
+					if (!isset($hook['attributes']['id']) || $hook['attributes']['id'] == '')
+						$errors[] = $lang_admin['extension/hooks/hook error2'];
+				}
+			}
+		}
+	}
+
+	return $errors;
+}