to download link, so it is part of the cache key. Dev snapshots can then be cached forever. $download_link = $release['download_link']; if (strpos($release['download_link'], '-dev') !== FALSE) { $download_link .= '?date=' . $release['date']; } // Cache for a year by default. $cache_duration = (drush_get_option('cache', TRUE)) ? 86400*365 : 0; // Prepare download path. On Windows file name cannot contain '?'. // See http://drupal.org/node/1782444 $filename = str_replace('?', '_', basename($download_link)); $download_path = drush_tempdir() . '/' . $filename; // Download the tarball. $download_path = drush_download_file($download_link, $download_path, $cache_duration); if ($download_path || drush_get_context('DRUSH_SIMULATE')) { drush_log(dt('Downloading !filename was successful.', array('!filename' => $filename))); } else { return drush_set_error('DRUSH_PM_DOWNLOAD_FAILED', dt('Unable to download !project to !path from !url.', array('!project' => $request['name'], '!path' => $download_path, '!url' => $download_link))); } // Check Md5 hash. if (!drush_get_option('no-md5')) { if (drush_op('md5_file', $download_path) != $release['mdhash'] && !drush_get_context('DRUSH_SIMULATE')) { drush_delete_dir(drush_download_file_name($download_link, TRUE)); return drush_set_error('DRUSH_PM_FILE_CORRUPT', dt('File !filename is corrupt (wrong md5 checksum).', array('!filename' => $filename))); } else { drush_log(dt('Md5 checksum of !filename verified.', array('!filename' => $filename))); } } // Extract the tarball in place and return the full path to the untarred directory. $download_base = dirname($download_path); if (!$tar_file_list = drush_tarball_extract($download_path, $download_base, TRUE)) { // An error has been logged. return FALSE; } $tar_directory = drush_trim_path($tar_file_list[0]); return $download_base . '/' . $tar_directory; } /** * Update a project. * * @return bool * Success or failure. An error message will be logged. */ function package_handler_update_project(&$request, $release) { $download_path = package_handler_download_project($request, $release); if ($download_path) { return drush_move_dir($download_path, $request['full_project_path']); } else { return FALSE; } } /** * Post download action. * * This action take place once the project is placed in its final location. */ function package_handler_post_download($project) { }