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- <?php
- /**
- * @file
- * Browscap data import functions.
- */
- /**
- * Helper function to update the browscap data.
- *
- * @param bool $cron
- * Optional import environment. If false, display status messages to the user
- * in addition to logging information with the watchdog.
- */
- function _browscap_import($cron = TRUE) {
- // Check the local browscap data version number.
- $local_version = variable_get('browscap_version', 0);
- // Retrieve the current browscap data version number using HTTP.
- $current_version = drupal_http_request('http://www.browscap.org/version-number');
- // Log an error if the browscap version number could not be retrieved.
- if (isset($current_version->error)) {
- // Log a message with the watchdog.
- watchdog('browscap', "Couldn't check version: %error", array('%error' => $current_version->error), WATCHDOG_ERROR);
- // Display a message to user if the update process was triggered manually.
- if ($cron == FALSE) {
- drupal_set_message(t("Couldn't check version: %error", array('%error' => $current_version->error)), 'error');
- }
- return;
- }
- // Sanitize the returned version number.
- $current_version = check_plain(trim($current_version->data));
- // Compare the current and local version numbers to determine if the browscap
- // data requires updating.
- if ($current_version == $local_version) {
- // Log a message with the watchdog.
- watchdog('browscap', 'No new version of browscap to import');
- // Display a message to user if the update process was triggered manually.
- if ($cron == FALSE) {
- drupal_set_message(t('No new version of browscap to import'));
- }
- return;
- }
- // Set options for downloading data with or without compression.
- if (function_exists('gzdecode')) {
- $options = array(
- 'headers' => array('Accept-Encoding' => 'gzip'),
- );
- }
- else {
- // The download takes over ten times longer without gzip, and may exceed
- // the default timeout of 30 seconds, so we increase the timeout.
- $options = array('timeout' => 600);
- }
- // Retrieve the browscap data using HTTP.
- $browscap_data = drupal_http_request('http://www.browscap.org/stream?q=PHP_BrowsCapINI', $options);
- // Log an error if the browscap data could not be retrieved.
- if (isset($browscap_data->error) || empty($browscap_data)) {
- // Log a message with the watchdog.
- watchdog('browscap', "Couldn't retrieve updated browscap: %error", array('%error' => $browscap_data->error), WATCHDOG_ERROR);
- // Display a message to user if the update process was triggered manually.
- if ($cron == FALSE) {
- drupal_set_message(t("Couldn't retrieve updated browscap: %error", array('%error' => $browscap_data->error)), 'error');
- }
- return;
- }
- // Decompress the downloaded data if it is compressed.
- if (function_exists('gzdecode')) {
- $browscap_data->data = gzdecode($browscap_data->data);
- }
- // Parse the returned browscap data.
- // The parse_ini_string function is preferred but only available in PHP 5.3.0.
- if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
- // Retrieve the browscap data.
- $browscap_data = $browscap_data->data;
- // Replace 'true' and 'false' with '1' and '0'
- $browscap_data = preg_replace(
- array(
- "/=\s*true\s*\n/",
- "/=\s*false\s*\n/",
- ),
- array(
- "=1\n",
- "=0\n",
- ),
- $browscap_data
- );
- // Parse the browscap data as a string.
- $browscap_data = parse_ini_string($browscap_data, TRUE, INI_SCANNER_RAW);
- }
- else {
- // Create a path and filename.
- $server = $_SERVER['SERVER_NAME'];
- $path = variable_get('file_temporary_path', '/tmp');
- $file = "$path/browscap_$server.ini";
- // Write the browscap data to a file.
- $browscap_file = fopen($file, "w");
- fwrite($browscap_file, $browscap_data->data);
- fclose($browscap_file);
- // Parse the browscap data as a file.
- $browscap_data = parse_ini_file($file, TRUE);
- }
- if ($browscap_data) {
- // Find the version information.
- // The version information is the first entry in the array.
- $version = array_shift($browscap_data);
- // Store the data available for each user agent.
- foreach ($browscap_data as $key => $values) {
- // Store the current value.
- $e = $values;
- // Create an array to hold the last parent.
- $last_parent = array();
- // Recurse through the available user agent information.
- while (isset($values['Parent']) && $values['Parent'] !== $last_parent) {
- $values = isset($browscap_data[$values['Parent']]) ? $browscap_data[$values['Parent']] : array();
- $e = array_merge($values, $e);
- $last_parent = $values;
- }
- // Replace '*?' with '%_'.
- $user_agent = strtr($key, '*?', '%_');
- // Change all array keys to lowercase.
- $e = array_change_key_case($e);
- // Delete all data about the current user agent from the database.
- db_delete('browscap')
- ->condition('useragent', $user_agent)
- ->execute();
- // Insert all data about the current user agent into the database.
- db_insert('browscap')
- ->fields(array(
- 'useragent' => $user_agent,
- 'data' => serialize($e),
- ))
- ->execute();
- }
- // Clear the browscap data cache.
- cache_clear_all('*', 'cache_browscap', TRUE);
- // Update the browscap version.
- variable_set('browscap_version', $current_version);
- // Log a message with the watchdog.
- watchdog('browscap', 'New version of browscap imported: %version', array('%version' => $current_version));
- // Display a message to user if the update process was triggered manually.
- if ($cron == FALSE) {
- drupal_set_message(t('New version of browscap imported: %version', array('%version' => $current_version)));
- }
- }
- }
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