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piwigo/admin/include/plugins.class.php
plegall 524011bfa6 Bug fixed: as rvelices notified me by email, my header replacement script was 
bugged (r2297 was repeating new and old header).

By the way, I've also removed the replacement keywords. We were using them
because it was a common usage with CVS but it is advised not to use them with
Subversion. Personnaly, it is a problem when I search differences between 2
Piwigo installations outside Subversion.


git-svn-id: http://piwigo.org/svn/trunk@2299 68402e56-0260-453c-a942-63ccdbb3a9ee
2008-04-05 14:14:07 +00:00

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PHP
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<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based picture gallery |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008 Piwigo Team http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | 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. |
// +-----------------------------------------------------------------------+
class plugins
{
var $fs_plugins = array();
var $db_plugins_by_id = array();
var $server_plugins;
/**
* Initialize $fs_plugins and $db_plugins_by_id
*/
function plugins()
{
$this->get_fs_plugins();
foreach (get_db_plugins() as $db_plugin)
{
$this->db_plugins_by_id[$db_plugin['id']] = $db_plugin;
}
}
/**
* Perform requested actions
* @param string - action
* @param string - plugin id
* @param array - errors
*/
function perform_action($action, $plugin_id)
{
if (isset($this->db_plugins_by_id[$plugin_id]))
{
$crt_db_plugin = $this->db_plugins_by_id[$plugin_id];
}
$file_to_include = PHPWG_PLUGINS_PATH . $plugin_id . '/maintain.inc.php';
$errors = array();
switch ($action)
{
case 'install':
if (!empty($crt_db_plugin))
{
array_push($errors, 'CANNOT INSTALL - ALREADY INSTALLED');
break;
}
if (!isset($this->fs_plugins[$plugin_id]))
{
array_push($errors, 'CANNOT INSTALL - NO SUCH PLUGIN');
break;
}
if (file_exists($file_to_include))
{
include_once($file_to_include);
if (function_exists('plugin_install'))
{
plugin_install($plugin_id, $this->fs_plugins[$plugin_id]['version'], $errors);
}
}
if (empty($errors))
{
$query = '
INSERT INTO ' . PLUGINS_TABLE . ' (id,version) VALUES ("'
. $plugin_id . '","' . $this->fs_plugins[$plugin_id]['version'] . '"
)';
pwg_query($query);
}
break;
case 'activate':
if (!isset($crt_db_plugin))
{
array_push($errors, 'CANNOT ACTIVATE - NOT INSTALLED');
break;
}
if ($crt_db_plugin['state'] != 'inactive')
{
array_push($errors, 'invalid current state ' . $crt_db_plugin['state']);
break;
}
if (file_exists($file_to_include))
{
include_once($file_to_include);
if (function_exists('plugin_activate'))
{
plugin_activate($plugin_id, $crt_db_plugin['version'], $errors);
}
}
if (empty($errors))
{
$query = '
UPDATE ' . PLUGINS_TABLE . ' SET state="active" WHERE id="' . $plugin_id . '"';
pwg_query($query);
}
break;
case 'deactivate':
if (!isset($crt_db_plugin))
{
die ('CANNOT DEACTIVATE - NOT INSTALLED');
}
if ($crt_db_plugin['state'] != 'active')
{
die('invalid current state ' . $crt_db_plugin['state']);
}
$query = '
UPDATE ' . PLUGINS_TABLE . ' SET state="inactive" WHERE id="' . $plugin_id . '"';
pwg_query($query);
if (file_exists($file_to_include))
{
include_once($file_to_include);
if (function_exists('plugin_deactivate'))
{
plugin_deactivate($plugin_id);
}
}
break;
case 'uninstall':
if (!isset($crt_db_plugin))
{
die ('CANNOT UNINSTALL - NOT INSTALLED');
}
$query = '
DELETE FROM ' . PLUGINS_TABLE . ' WHERE id="' . $plugin_id . '"';
pwg_query($query);
if (file_exists($file_to_include))
{
include_once($file_to_include);
if (function_exists('plugin_uninstall'))
{
plugin_uninstall($plugin_id);
}
}
break;
case 'delete':
if (!empty($crt_db_plugin))
{
array_push($errors, 'CANNOT DELETE - PLUGIN IS INSTALLED');
break;
}
if (!isset($this->fs_plugins[$plugin_id]))
{
array_push($errors, 'CANNOT DELETE - NO SUCH PLUGIN');
break;
}
if (!$this->deltree(PHPWG_PLUGINS_PATH . $plugin_id))
{
$this->send_to_trash(PHPWG_PLUGINS_PATH . $plugin_id);
}
break;
}
return $errors;
}
/**
* Get plugins defined in the plugin directory
*/
function get_fs_plugins()
{
$dir = opendir(PHPWG_PLUGINS_PATH);
while ($file = readdir($dir))
{
if ($file!='.' and $file!='..')
{
$path = PHPWG_PLUGINS_PATH.$file;
if (is_dir($path) and !is_link($path)
and preg_match('/^[a-zA-Z0-9-_]+$/', $file )
and file_exists($path.'/main.inc.php')
)
{
$plugin = array(
'name'=>$file,
'version'=>'0',
'uri'=>'',
'description'=>'',
'author'=>'',
);
$plg_data = implode( '', file($path.'/main.inc.php') );
if ( preg_match("|Plugin Name: (.*)|", $plg_data, $val) )
{
$plugin['name'] = trim( $val[1] );
}
if (preg_match("|Version: (.*)|", $plg_data, $val))
{
$plugin['version'] = trim($val[1]);
}
if ( preg_match("|Plugin URI: (.*)|", $plg_data, $val) )
{
$plugin['uri'] = trim($val[1]);
}
if ( preg_match("|Description: (.*)|", $plg_data, $val) )
{
$plugin['description'] = trim($val[1]);
}
if ( preg_match("|Author: (.*)|", $plg_data, $val) )
{
$plugin['author'] = trim($val[1]);
}
if ( preg_match("|Author URI: (.*)|", $plg_data, $val) )
{
$plugin['author uri'] = trim($val[1]);
}
if (!empty($plugin['uri']) and strpos($plugin['uri'] , 'extension_view.php?eid='))
{
list( , $extension) = explode('extension_view.php?eid=', $plugin['uri']);
if (is_numeric($extension)) $plugin['extension'] = $extension;
}
// IMPORTANT SECURITY !
$plugin = array_map('htmlspecialchars', $plugin);
$this->fs_plugins[$file] = $plugin;
}
}
}
closedir($dir);
}
/**
* Sort fs_plugins
*/
function sort_fs_plugins($order='name')
{
switch ($order)
{
case 'name':
uasort($this->fs_plugins, 'name_compare');
break;
case 'status':
$this->sort_plugins_by_state();
break;
case 'author':
uasort($this->fs_plugins, array($this, 'plugin_author_compare'));
break;
case 'id':
uksort($this->fs_plugins, 'strcasecmp');
break;
}
}
/**
* Retrieve PEM server datas to $server_plugins
*/
function get_server_plugins($new=false)
{
foreach($this->fs_plugins as $fs_plugin)
{
if (isset($fs_plugin['extension']))
{
$plugins_to_check[] = $fs_plugin['extension'];
}
}
$url = PEM_URL . '/uptodate.php?version=' . rawurlencode(PHPWG_VERSION) . '&extensions=' . implode(',', $plugins_to_check);
$url .= $new ? '&newext=Plugin' : '';
if (!empty($plugins_to_check) and $source = @file_get_contents($url))
{
$this->server_plugins = @unserialize($source);
}
}
/**
* Sort $server_plugins
*/
function sort_server_plugins($order='date')
{
switch ($order)
{
case 'date':
krsort($this->server_plugins);
break;
case 'revision':
usort($this->server_plugins, array($this, 'extension_revision_compare'));
break;
case 'name':
uasort($this->server_plugins, array($this, 'extension_name_compare'));
break;
case 'author':
uasort($this->server_plugins, array($this, 'extension_author_compare'));
break;
}
}
/**
* Extract plugin files from archive
* @param string - install or upgrade
* @param string - archive URL
* @param string - destination path
*/
function extract_plugin_files($action, $source, $dest)
{
if ($archive = tempnam( PHPWG_PLUGINS_PATH, 'zip'))
{
if (@copy(PEM_URL . str_replace(' ', '%20', $source), $archive))
{
include(PHPWG_ROOT_PATH.'admin/include/pclzip.lib.php');
$zip = new PclZip($archive);
if ($list = $zip->listContent())
{
foreach ($list as $file)
{
// we search main.inc.php in archive
if (basename($file['filename']) == 'main.inc.php'
and (!isset($main_filepath)
or strlen($file['filename']) < strlen($main_filepath)))
{
$main_filepath = $file['filename'];
}
}
if (isset($main_filepath))
{
$root = dirname($main_filepath); // main.inc.php path in archive
if ($action == 'upgrade')
{
$extract_path = PHPWG_PLUGINS_PATH.$dest;
}
else
{
$extract_path = PHPWG_PLUGINS_PATH
. ($root == '.' ? 'extension_' . $dest : basename($root));
}
if($result = $zip->extract(PCLZIP_OPT_PATH, $extract_path,
PCLZIP_OPT_REMOVE_PATH, $root,
PCLZIP_OPT_REPLACE_NEWER))
{
foreach ($result as $file)
{
if ($file['stored_filename'] == $main_filepath)
{
$status = $file['status'];
break;
}
}
}
else $status = 'extract_error';
}
else $status = 'archive_error';
}
else $status = 'archive_error';
}
else $status = 'dl_archive_error';
}
else $status = 'temp_path_error';
@unlink($archive);
return $status;
}
/**
* delete $path directory
* @param string - path
*/
function deltree($path)
{
if (is_dir($path))
{
$fh = opendir($path);
while ($file = readdir($fh))
{
if ($file != '.' and $file != '..')
{
$pathfile = $path . '/' . $file;
if (is_dir($pathfile))
{
$this->deltree($pathfile);
}
else
{
@unlink($pathfile);
}
}
}
closedir($fh);
return @rmdir($path);
}
}
/**
* send $path to trash directory
* @param string - path
*/
function send_to_trash($path)
{
$trash_path = PHPWG_PLUGINS_PATH . 'trash';
if (!is_dir($trash_path))
{
@mkdir($trash_path);
$file = @fopen($trash_path . '/.htaccess', 'w');
@fwrite($file, 'deny from all');
@fclose($file);
}
while ($r = $trash_path . '/' . md5(uniqid(rand(), true)))
{
if (!is_dir($r))
{
@rename($path, $r);
break;
}
}
}
/**
* Sort functions
*/
function plugin_version_compare($a, $b)
{
$pattern = array('/([a-z])/ei', '/\.+/', '/\.\Z|\A\./');
$replacement = array( "'.'.intval('\\1', 36).'.'", '.', '');
$array = preg_replace($pattern, $replacement, array($a['version'], $b['version']));
return version_compare($array[0], $array[1], '>=');
}
function extension_revision_compare($a, $b)
{
if ($a['date'] < $b['date']) return 1;
else return -1;
}
function extension_name_compare($a, $b)
{
return strcmp(strtolower($a['ext_name']), strtolower($b['ext_name']));
}
function extension_author_compare($a, $b)
{
$r = strcasecmp($a['author'], $b['author']);
if ($r == 0) return $this->extension_name_compare($a, $b);
else return $r;
}
function plugin_author_compare($a, $b)
{
$r = strcasecmp($a['author'], $b['author']);
if ($r == 0) return name_compare($a, $b);
else return $r;
}
function sort_plugins_by_state()
{
uasort($this->fs_plugins, 'name_compare');
$active_plugins = array();
$inactive_plugins = array();
$not_installed = array();
foreach($this->fs_plugins as $plugin_id => $plugin)
{
if (isset($this->db_plugins_by_id[$plugin_id]))
{
$this->db_plugins_by_id[$plugin_id]['state'] == 'active' ?
$active_plugins[$plugin_id] = $plugin : $inactive_plugins[$plugin_id] = $plugin;
}
else
{
$not_installed[$plugin_id] = $plugin;
}
}
$this->fs_plugins = $active_plugins + $inactive_plugins + $not_installed;
}
}
?>
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