<?php

function manifest_cache_update($root_dir_joomla)
{

    $db_id = 'main';
    mysql_db_connect(get_db_address($db_id), get_db_login($db_id), get_db_password($db_id), get_db_name($db_id));

    //Front updates
    manifest_cache_updateExtensions($root_dir_joomla.'/components', 0, 'com_'); //OK
    manifest_cache_updateExtensions($root_dir_joomla.'/language', 0, ''); //OK
    manifest_cache_updateExtensions($root_dir_joomla.'/modules', 0, ''); //OK
    manifest_cache_updatePlugins($root_dir_joomla.'/plugins', ''); //OK
    manifest_cache_updateExtensions($root_dir_joomla.'/templates', 0, '', 'templateDetails'); //OK

    //Admin Updates
    manifest_cache_updateExtensions($root_dir_joomla.'/administrator/components', 1, 'com_'); //OK
    manifest_cache_updateExtensions($root_dir_joomla.'/administrator/language', 1, ''); //OK
    manifest_cache_updateLibraries($root_dir_joomla.'/administrator/manifests/libraries');
    manifest_cache_updateExtensions($root_dir_joomla.'/administrator/modules', 1, ''); //OK
    manifest_cache_updateExtensions($root_dir_joomla.'/administrator/templates', 1, '', 'templateDetails'); //OK

    //Joomla File
    manifest_cache_updateJoomlaFileType($root_dir_joomla.'/administrator/manifests/files/joomla.xml');
}

function manifest_cache_updateExtensions($folderPath, $client_id, $prefix = '', $defaultDetailsFile = '')
{
    $extensions = manifest_cache_getFolders($folderPath);
    foreach($extensions as $extension)
    {
        $detailsFile = str_replace($prefix, '', $extension);
        if($defaultDetailsFile)
        {
            $detailsFile = $defaultDetailsFile;
        }
        if(file_exists($folderPath.'/'.$extension.'/'.$detailsFile.'.xml'))
        {
            $manifest_details = manifest_cache_parseXMLInstallFile($folderPath.'/'.$extension.'/'.$detailsFile.'.xml');
            manifest_cache_updateDBValue($manifest_details, $client_id);
        }
    }
}

function manifest_cache_updatePlugins($folderPath)
{
    $folder_list = manifest_cache_getFolders($folderPath);

    foreach($folder_list as $folder)
    {
        $file_list = manifest_cache_getItemsFiles($folderPath.'/'.$folder, '\.xml$');
        foreach($file_list as $file)
        {
            $manifest_details = manifest_cache_parseXMLInstallFile($folderPath.'/'.$folder.'/'.$file);
            manifest_cache_updateDBValue($manifest_details, 0);
        }
        $folder_list_in = manifest_cache_getFolders($folderPath.'/'.$folder);
        foreach($folder_list_in as $plugin_folder)
        {
            $file_list = manifest_cache_getItemsFiles($folderPath.'/'.$folder.'/'.$plugin_folder, '\.xml$');
            foreach($file_list as $file)
            {
                $manifest_details = manifest_cache_parseXMLInstallFile($folderPath.'/'.$folder.'/'.$plugin_folder.'/'.$file);
                manifest_cache_updateDBValue($manifest_details, 0);
            }
        }
    }
}

function manifest_cache_updateLibraries($folderPath)
{
    $file_list = manifest_cache_getItemsFiles($folderPath, '\.xml$', true);

    foreach($file_list as $file)
    {
        $manifest_details = manifest_cache_parseXMLInstallFile($folderPath.'/'.$file);
        manifest_cache_updateDBValue($manifest_details, 0);
    }
}

function manifest_cache_updateJoomlaFileType($folderPath)
{
    $manifest_details = manifest_cache_parseXMLInstallFile($folderPath);
    manifest_cache_updateDBJoomlaFileType($manifest_details);
}

function manifest_cache_getFolders($path)
{
    $filter = '.';
    $recurse = false;
    $full = false;
    $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX');
    $excludefilter = array('^\..*');
    // Is the path a folder?
    if(!is_dir($path))
    {
        return false;
    }

    // Compute the excludefilter string
    if(count($excludefilter))
    {
        $excludefilter_string = '/('.implode('|', $excludefilter).')/';
    }
    else
    {
        $excludefilter_string = '';
    }

    // Get the folders
    $arr = manifest_cache_getItems($path, $filter, $recurse, $full, $exclude, $excludefilter_string, false);

    // Sort the folders
    asort($arr);

    return array_values($arr);
}

function manifest_cache_getItems($path, $filter, $recurse, $full, $exclude, $excludefilter_string, $findfiles)
{
    @set_time_limit(ini_get('max_execution_time'));

    $arr = array();

    // Read the source directory
    if(!($handle = @opendir($path)))
    {
        return $arr;
    }

    while(($file = readdir($handle)) !== false)
    {
        if($file != '.' && $file != '..' && !in_array($file, $exclude) && (empty($excludefilter_string) || !preg_match($excludefilter_string, $file)))
        {
            // Compute the fullpath
            $fullpath = $path.'/'.$file;

            // Compute the isDir flag
            $isDir = is_dir($fullpath);

            if(($isDir xor $findfiles) && preg_match("/$filter/", $file))
            {
                // (fullpath is dir and folders are searched or fullpath is not dir and files are searched) and file matches the filter
                if($full)
                {
                    // Full path is requested
                    $arr[] = $fullpath;
                }
                else
                {
                    // Filename is requested
                    $arr[] = $file;
                }
            }
            if($isDir && $recurse)
            {
                // Search recursively
                if(is_int($recurse))
                {
                    // Until depth 0 is reached
                    $arr = array_merge($arr, manifest_cache_getItems($fullpath, $filter, $recurse - 1, $full, $exclude, $excludefilter_string, $findfiles));
                }
                else
                {
                    $arr = array_merge($arr, manifest_cache_getItems($fullpath, $filter, $recurse, $full, $exclude, $excludefilter_string, $findfiles));
                }
            }
        }
    }
    closedir($handle);

    return $arr;
}

function manifest_cache_getItemsFiles($path, $filter = '.', $recurse = false)
{
    $full = false;
    $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX');
    $excludefilter = array('^\..*', '.*~');
    // Is the path a folder?
    if(!is_dir($path))
    {
        return false;
    }

    // Compute the excludefilter string
    if(count($excludefilter))
    {
        $excludefilter_string = '/('.implode('|', $excludefilter).')/';
    }
    else
    {
        $excludefilter_string = '';
    }

    // Get the files
    $arr = manifest_cache_getItems($path, $filter, $recurse, $full, $exclude, $excludefilter_string, true);

    // Sort the files
    asort($arr);

    return array_values($arr);
}

function manifest_cache_parseXMLInstallFile($path)
{
    // Read the file to see if it's a valid component XML file
    $xml = simplexml_load_file($path);
    if(!$xml)
    {
        return false;
    }

    // Check for a valid XML root tag.

    // Extensions use 'extension' as the root tag.  Languages use 'metafile' instead

    if($xml->getName() != 'extension' && $xml->getName() != 'metafile')
    {
        unset($xml);

        return false;
    }

    $data = array();

    $data['name'] = (string)$xml->name;

    // Check if we're a language. If so use metafile.
    $data['type'] = $xml->getName() == 'metafile' ? 'language' : (string)$xml->attributes()->type;

    $data['creationDate'] = ((string)$xml->creationDate) ? (string)$xml->creationDate : 'Unknown';
    $data['author'] = ((string)$xml->author) ? (string)$xml->author : 'Unknown';

    $data['copyright'] = (string)$xml->copyright;
    $data['authorEmail'] = (string)$xml->authorEmail;
    $data['authorUrl'] = (string)$xml->authorUrl;
    $data['version'] = (string)$xml->version;
    $data['description'] = (string)$xml->description;
    $data['group'] = (string)$xml->group;

    return $data;
}

function manifest_cache_updateDBValue($manifest_details, $client_id)
{
    $db_id = 'main';
    $db_prefix = get_db_prefix($db_id);

    $extension_name = $manifest_details['name'];
    $extension_type = $manifest_details['type'];
    $manifest_cache_value = json_encode($manifest_details);

    $manifest_cache_value = manifest_cache_escape($manifest_cache_value);

    $sql = "UPDATE ".$db_prefix."jos_extensions SET `manifest_cache` = '".$manifest_cache_value."' WHERE `name`='".$extension_name."' AND `type`='".$extension_type."' AND `client_id`=".$client_id;

    $result = mysql_query($sql);
}

function manifest_cache_updateDBJoomlaFileType($manifest_details)
{
    $db_id = 'main';
    $db_prefix = get_db_prefix($db_id);

    $extension_name = $manifest_details['name'];
    $manifest_cache_value = json_encode($manifest_details);

    $manifest_cache_value = manifest_cache_escape($manifest_cache_value);

    $sql = "UPDATE ".$db_prefix."jos_extensions SET `name` = '".$extension_name."', `manifest_cache` = '".$manifest_cache_value."' WHERE `extension_id`=700";

    $result = mysql_query($sql);
}

function manifest_cache_escape($text, $extra = false)
{

    $result = mysql_real_escape_string($text);

    if($extra)
    {
        $result = addcslashes($result, '%_');
    }

    return $result;
}

?>