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@@ -0,0 +1,594 @@
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+<?php
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+
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+/**
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+ * @file
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+ * Drupal default includes/path.inc file copy which only differs in:
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+ * - drupal_lookup_path() which is the only performance critical.
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+ * - path_*() functions for synchronization.
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+ */
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+
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+/**
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+ * Get Redis path lookup backend.
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+ *
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+ * @return Redis_Path_HashLookupInterface
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+ */
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+function redis_path_backend_get() {
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+ $hashLookup = &drupal_static(__FUNCTION__, null);
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+
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+ if (null === $hashLookup) {
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+ try {
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+ $className = Redis_Client::getClass(Redis_Client::REDIS_IMPL_PATH);
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+ $hashLookup = new $className(Redis_Client::getClient(), 'path', Redis_Client::getDefaultPrefix('path'));
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+ } catch (Exception $e) {
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+ $hashLookup = new Redis_Path_NullHashLookup();
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+ }
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+ }
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+
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+ return $hashLookup;
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+}
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+
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+/**
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+ * Initialize the $_GET['q'] variable to the proper normal path.
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+ */
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+function drupal_path_initialize() {
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+ // Ensure $_GET['q'] is set before calling drupal_normal_path(), to support
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+ // path caching with hook_url_inbound_alter().
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+ if (empty($_GET['q'])) {
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+ $_GET['q'] = variable_get('site_frontpage', 'node');
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+ }
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+ $_GET['q'] = drupal_get_normal_path($_GET['q']);
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+}
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+
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+/**
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+ * Given an alias, return its Drupal system URL if one exists. Given a Drupal
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+ * system URL return one of its aliases if such a one exists. Otherwise,
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+ * return FALSE.
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+ *
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+ * @param $action
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+ * One of the following values:
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+ * - wipe: delete the alias cache.
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+ * - alias: return an alias for a given Drupal system path (if one exists).
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+ * - source: return the Drupal system URL for a path alias (if one exists).
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+ * @param $path
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+ * The path to investigate for corresponding aliases or system URLs.
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+ * @param $path_language
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+ * Optional language code to search the path with. Defaults to the page language.
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+ * If there's no path defined for that language it will search paths without
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+ * language.
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+ *
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+ * @return
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+ * Either a Drupal system path, an aliased path, or FALSE if no path was
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+ * found.
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+ */
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+function drupal_lookup_path($action, $path = '', $path_language = NULL) {
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+ global $language_url;
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+
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+ static $cache, $denyAdmin;
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+
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+ if (null === $cache) {
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+ $cache = array('whitelist' => variable_get('path_alias_whitelist'));
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+ if (null === $cache['whitelist']) {
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+ $cache['whitelist'] = drupal_path_alias_whitelist_rebuild();
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+ }
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+ $denyAdmin = (bool)variable_get('path_alias_admin_blacklist', true);
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+ }
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+
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+ // If no language is explicitly specified we default to the current URL
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+ // language. If we used a language different from the one conveyed by the
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+ // requested URL, we might end up being unable to check if there is a path
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+ // alias matching the URL path.
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+ if (!$path_language = $path_language ? $path_language : $language_url->language) {
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+ $path_language = LANGUAGE_NONE;
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+ }
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+
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+ if (!empty($path) && isset($cache[$path_language][$action][$path])) {
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+ return $cache[$path_language][$action][$path];
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+ }
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+
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+ if (!empty($path)) {
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+ $path = strtolower(trim($path));
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+ }
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+
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+ $ret = null;
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+ $hashLookup = redis_path_backend_get();
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+
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+ switch ($action) {
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+
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+ case 'wipe':
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+ $cache = array();
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+ $cache['whitelist'] = drupal_path_alias_whitelist_rebuild();
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+ break;
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+
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+ case 'alias':
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+ if (empty($path)) {
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+ return false;
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+ }
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+ // Check the path whitelist, if the top_level part before the first /
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+ // is not in the list, then there is no need to do anything further,
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+ // it is not in the database.
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+ if (!isset($cache['whitelist'][strtok($path, '/')])) {
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+ return false;
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+ }
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+ // Deny admin paths.
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+ if ($denyAdmin && path_is_admin($path)) {
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+ return false;
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+ }
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+
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+ $ret = $hashLookup->lookupAlias($path, $path_language);
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+ if (null === $ret) {
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+ // Original Drupal algorithm.
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+ // This will also update the $path_language variable so Redis will store
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+ // the right language (keeps track of LANGUAGE_NONE or specific language
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+ // so that default fallback behavior is the same that core).
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+ if ($path_language == LANGUAGE_NONE) {
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+ list ($ret, $path_language) = db_query_range("SELECT alias, language FROM {url_alias} WHERE source = :source AND language = :language ORDER BY pid DESC", 0, 1, array(
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+ ':source' => $path,
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+ ':language' => $path_language,
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+ ))->fetch(PDO::FETCH_NUM);
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+ } else if ($path_language > LANGUAGE_NONE) {
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+ list ($ret, $path_language) = db_query_range("SELECT alias, language FROM {url_alias} WHERE source = :source AND language IN (:language) ORDER BY language DESC, pid DESC", 0, 1, array(
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+ ':source' => $path,
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+ ':language' => array($path_language, LANGUAGE_NONE),
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+ ))->fetch(PDO::FETCH_NUM);
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+ } else {
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+ list ($ret, $path_language) = db_query_range("SELECT alias, language FROM {url_alias} WHERE source = :source AND language IN (:language) ORDER BY language ASC, pid DESC", 0, 1, array(
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+ ':source' => $path,
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+ ':language' => array($path_language, LANGUAGE_NONE),
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+ ))->fetch(PDO::FETCH_NUM);
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+ }
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+ // Getting here with a value means we need to cache it
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+ if (empty($ret)) {
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+ $ret = false;
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+ }
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+ $hashLookup->saveAlias($path, $ret, $path_language);
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+ }
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+ $cache[$path_language]['alias'][$path] = $ret;
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+ $cache[$path_language]['source'][$ret] = $path;
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+ break;
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+
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+ case 'source':
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+ if (empty($path)) {
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+ return false;
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+ }
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+ // Even thought given entry is an alias, if it conflicts with an
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+ // existing admin path just deny any lookup.
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+ if ($denyAdmin && path_is_admin($path)) {
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+ return false;
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+ }
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+
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+ $ret = $hashLookup->lookupSource($path, $path_language);
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+ if (null === $ret) {
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+ // Original Drupal algorithm.
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+ // This will also update the $path_language variable so Redis will store
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+ // the right language (keeps track of LANGUAGE_NONE or specific language
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+ // so that default fallback behavior is the same that core).
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+ if ($path_language == LANGUAGE_NONE) {
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+ list ($ret, $path_language) = db_query_range("SELECT source, language FROM {url_alias} WHERE alias = :alias AND language = :language ORDER BY pid DESC", 0, 1, array(
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+ ':alias' => $path,
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+ ':language' => LANGUAGE_NONE,
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+ ))->fetch(PDO::FETCH_NUM);
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+ } else if ($path_language > LANGUAGE_NONE) {
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+ list ($ret, $path_language) = db_query_range("SELECT source, language FROM {url_alias} WHERE alias = :alias AND language IN (:language) ORDER BY language DESC, pid DESC", 0, 1, array(
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+ ':alias' => $path,
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+ ':language' => array($path_language, LANGUAGE_NONE),
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+ ))->fetch(PDO::FETCH_NUM);
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+ } else {
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+ list ($ret, $path_language) = db_query_range("SELECT source, language FROM {url_alias} WHERE alias = :alias AND language IN (:language) ORDER BY language ASC, pid DESC", 0, 1, array(
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+ ':alias' => $path,
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+ ':language' => array($path_language, LANGUAGE_NONE),
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+ ))->fetch(PDO::FETCH_NUM);
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+ }
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+ // Getting here with a value means we need to cache it
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+ if (empty($ret)) {
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+ $ret = false;
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+ } else {
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+ $ret = strtolower(trim($ret));
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+ }
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+ $hashLookup->saveAlias($ret, $path, $path_language);
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+ }
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+ $cache[$path_language]['alias'][$ret] = $path;
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+ $cache[$path_language]['source'][$path] = $ret;
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+ break;
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+ }
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+
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+ return $ret;
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+}
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+
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+/**
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+ * Cache system paths for a page.
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+ *
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+ * Cache an array of the system paths available on each page. We assume
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+ * that aliases will be needed for the majority of these paths during
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+ * subsequent requests, and load them in a single query during
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+ * drupal_lookup_path().
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+ */
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+function drupal_cache_system_paths() {
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+ // Check if the system paths for this page were loaded from cache in this
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+ // request to avoid writing to cache on every request.
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+ $cache = &drupal_static('drupal_lookup_path', array());
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+ if (empty($cache['system_paths']) && !empty($cache['map'])) {
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+ // Generate a cache ID (cid) specifically for this page.
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+ $cid = current_path();
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+ // The static $map array used by drupal_lookup_path() includes all
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+ // system paths for the page request.
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+ if ($paths = current($cache['map'])) {
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+ $data = array_keys($paths);
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+ $expire = REQUEST_TIME + (60 * 60 * 24);
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+ cache_set($cid, $data, 'cache_path', $expire);
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+ }
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+ }
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+}
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+
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+/**
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+ * Given an internal Drupal path, return the alias set by the administrator.
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+ *
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+ * If no path is provided, the function will return the alias of the current
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+ * page.
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+ *
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+ * @param $path
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+ * An internal Drupal path.
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+ * @param $path_language
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+ * An optional language code to look up the path in.
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+ *
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+ * @return
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+ * An aliased path if one was found, or the original path if no alias was
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+ * found.
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+ */
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+function drupal_get_path_alias($path = NULL, $path_language = NULL) {
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+ // If no path is specified, use the current page's path.
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+ if ($path == NULL) {
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+ $path = $_GET['q'];
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+ }
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+ $result = $path;
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+ if ($alias = drupal_lookup_path('alias', $path, $path_language)) {
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+ $result = $alias;
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+ }
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+ return $result;
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+}
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+
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+/**
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+ * Given a path alias, return the internal path it represents.
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+ *
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+ * @param $path
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+ * A Drupal path alias.
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+ * @param $path_language
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+ * An optional language code to look up the path in.
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+ *
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+ * @return
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+ * The internal path represented by the alias, or the original alias if no
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+ * internal path was found.
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+ */
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+function drupal_get_normal_path($path, $path_language = NULL) {
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+ $original_path = $path;
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+
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+ // Lookup the path alias first.
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+ if ($source = drupal_lookup_path('source', $path, $path_language)) {
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+ $path = $source;
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+ }
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+
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+ // Allow other modules to alter the inbound URL. We cannot use drupal_alter()
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+ // here because we need to run hook_url_inbound_alter() in the reverse order
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+ // of hook_url_outbound_alter().
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+ foreach (array_reverse(module_implements('url_inbound_alter')) as $module) {
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+ $function = $module . '_url_inbound_alter';
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+ $function($path, $original_path, $path_language);
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+ }
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+
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+ return $path;
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+}
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+
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+/**
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+ * Check if the current page is the front page.
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+ *
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+ * @return
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+ * Boolean value: TRUE if the current page is the front page; FALSE if otherwise.
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+ */
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+function drupal_is_front_page() {
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+ // Use the advanced drupal_static() pattern, since this is called very often.
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+ static $drupal_static_fast;
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+ if (!isset($drupal_static_fast)) {
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+ $drupal_static_fast['is_front_page'] = &drupal_static(__FUNCTION__);
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+ }
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+ $is_front_page = &$drupal_static_fast['is_front_page'];
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+
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+ if (!isset($is_front_page)) {
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+ // As drupal_path_initialize updates $_GET['q'] with the 'site_frontpage' path,
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+ // we can check it against the 'site_frontpage' variable.
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+ $is_front_page = ($_GET['q'] == variable_get('site_frontpage', 'node'));
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+ }
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+
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+ return $is_front_page;
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+}
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+
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+/**
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+ * Check if a path matches any pattern in a set of patterns.
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+ *
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+ * @param $path
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+ * The path to match.
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+ * @param $patterns
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+ * String containing a set of patterns separated by \n, \r or \r\n.
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+ *
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+ * @return
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+ * Boolean value: TRUE if the path matches a pattern, FALSE otherwise.
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+ */
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+function drupal_match_path($path, $patterns) {
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+ $regexps = &drupal_static(__FUNCTION__);
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+
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+ if (!isset($regexps[$patterns])) {
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+ // Convert path settings to a regular expression.
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+ // Therefore replace newlines with a logical or, /* with asterisks and the <front> with the frontpage.
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+ $to_replace = array(
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+ '/(\r\n?|\n)/', // newlines
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+ '/\\\\\*/', // asterisks
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+ '/(^|\|)\\\\<front\\\\>($|\|)/' // <front>
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+ );
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+ $replacements = array(
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+ '|',
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+ '.*',
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+ '\1' . preg_quote(variable_get('site_frontpage', 'node'), '/') . '\2'
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+ );
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+ $patterns_quoted = preg_quote($patterns, '/');
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+ $regexps[$patterns] = '/^(' . preg_replace($to_replace, $replacements, $patterns_quoted) . ')$/';
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+ }
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+ return (bool)preg_match($regexps[$patterns], $path);
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+}
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+
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+/**
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+ * Return the current URL path of the page being viewed.
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+ *
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+ * Examples:
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+ * - http://example.com/node/306 returns "node/306".
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+ * - http://example.com/drupalfolder/node/306 returns "node/306" while
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+ * base_path() returns "/drupalfolder/".
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+ * - http://example.com/path/alias (which is a path alias for node/306) returns
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+ * "node/306" as opposed to the path alias.
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+ *
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+ * This function is not available in hook_boot() so use $_GET['q'] instead.
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+ * However, be careful when doing that because in the case of Example #3
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+ * $_GET['q'] will contain "path/alias". If "node/306" is needed, calling
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+ * drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL) makes this function available.
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+ *
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+ * @return
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+ * The current Drupal URL path.
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+ *
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+ * @see request_path()
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+ */
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+function current_path() {
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+ return $_GET['q'];
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+}
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+
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+/**
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+ * Rebuild the path alias white list.
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+ *
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+ * @param $source
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+ * An optional system path for which an alias is being inserted.
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+ *
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+ * @return
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+ * An array containing a white list of path aliases.
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+ */
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+function drupal_path_alias_whitelist_rebuild($source = NULL) {
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+ // When paths are inserted, only rebuild the whitelist if the system path
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+ // has a top level component which is not already in the whitelist.
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+ if (!empty($source)) {
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+ $whitelist = variable_get('path_alias_whitelist', NULL);
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+ if (isset($whitelist[strtok($source, '/')])) {
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+ return $whitelist;
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+ }
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+ }
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+ // For each alias in the database, get the top level component of the system
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+ // path it corresponds to. This is the portion of the path before the first
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+ // '/', if present, otherwise the whole path itself.
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+ $whitelist = array();
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+ $result = db_query("SELECT DISTINCT SUBSTRING_INDEX(source, '/', 1) AS path FROM {url_alias}");
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+ foreach ($result as $row) {
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+ $whitelist[$row->path] = TRUE;
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+ }
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|
|
+ variable_set('path_alias_whitelist', $whitelist);
|
|
|
+ return $whitelist;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Fetches a specific URL alias from the database.
|
|
|
+ *
|
|
|
+ * @param $conditions
|
|
|
+ * A string representing the source, a number representing the pid, or an
|
|
|
+ * array of query conditions.
|
|
|
+ *
|
|
|
+ * @return
|
|
|
+ * FALSE if no alias was found or an associative array containing the
|
|
|
+ * following keys:
|
|
|
+ * - source: The internal system path.
|
|
|
+ * - alias: The URL alias.
|
|
|
+ * - pid: Unique path alias identifier.
|
|
|
+ * - language: The language of the alias.
|
|
|
+ */
|
|
|
+function path_load($conditions) {
|
|
|
+ if (is_numeric($conditions)) {
|
|
|
+ $conditions = array('pid' => $conditions);
|
|
|
+ }
|
|
|
+ elseif (is_string($conditions)) {
|
|
|
+ $conditions = array('source' => $conditions);
|
|
|
+ }
|
|
|
+ elseif (!is_array($conditions)) {
|
|
|
+ return FALSE;
|
|
|
+ }
|
|
|
+ $select = db_select('url_alias');
|
|
|
+ foreach ($conditions as $field => $value) {
|
|
|
+ $select->condition($field, $value);
|
|
|
+ }
|
|
|
+ return $select
|
|
|
+ ->fields('url_alias')
|
|
|
+ ->execute()
|
|
|
+ ->fetchAssoc();
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Save a path alias to the database.
|
|
|
+ *
|
|
|
+ * @param $path
|
|
|
+ * An associative array containing the following keys:
|
|
|
+ * - source: The internal system path.
|
|
|
+ * - alias: The URL alias.
|
|
|
+ * - pid: (optional) Unique path alias identifier.
|
|
|
+ * - language: (optional) The language of the alias.
|
|
|
+ */
|
|
|
+function path_save(&$path) {
|
|
|
+ $path += array('language' => LANGUAGE_NONE);
|
|
|
+
|
|
|
+ // Load the stored alias, if any.
|
|
|
+ if (!empty($path['pid']) && !isset($path['original'])) {
|
|
|
+ $path['original'] = path_load($path['pid']);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (empty($path['pid'])) {
|
|
|
+ drupal_write_record('url_alias', $path);
|
|
|
+ module_invoke_all('path_insert', $path);
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ drupal_write_record('url_alias', $path, array('pid'));
|
|
|
+ module_invoke_all('path_update', $path);
|
|
|
+ }
|
|
|
+ if (!empty($path['original'])) {
|
|
|
+ redis_path_backend_get()->deleteAlias($path['original']['source'], $path['original']['alias'], $path['original']['language']);
|
|
|
+ }
|
|
|
+ redis_path_backend_get()->saveAlias($path['source'], $path['alias'], $path['language']);
|
|
|
+
|
|
|
+ // Clear internal properties.
|
|
|
+ unset($path['original']);
|
|
|
+
|
|
|
+ // Clear the static alias cache.
|
|
|
+ drupal_clear_path_cache($path['source']);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Delete a URL alias.
|
|
|
+ *
|
|
|
+ * @param $criteria
|
|
|
+ * A number representing the pid or an array of criteria.
|
|
|
+ */
|
|
|
+function path_delete($criteria) {
|
|
|
+ if (!is_array($criteria)) {
|
|
|
+ $criteria = array('pid' => $criteria);
|
|
|
+ }
|
|
|
+ $path = path_load($criteria);
|
|
|
+ $query = db_delete('url_alias');
|
|
|
+ foreach ($criteria as $field => $value) {
|
|
|
+ $query->condition($field, $value);
|
|
|
+ }
|
|
|
+ $query->execute();
|
|
|
+ module_invoke_all('path_delete', $path);
|
|
|
+ redis_path_backend_get()->deleteAlias($path['source'], $path['alias'], $path['language']);
|
|
|
+ drupal_clear_path_cache($path['source']);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Determines whether a path is in the administrative section of the site.
|
|
|
+ *
|
|
|
+ * By default, paths are considered to be non-administrative. If a path does
|
|
|
+ * not match any of the patterns in path_get_admin_paths(), or if it matches
|
|
|
+ * both administrative and non-administrative patterns, it is considered
|
|
|
+ * non-administrative.
|
|
|
+ *
|
|
|
+ * @param $path
|
|
|
+ * A Drupal path.
|
|
|
+ *
|
|
|
+ * @return
|
|
|
+ * TRUE if the path is administrative, FALSE otherwise.
|
|
|
+ *
|
|
|
+ * @see path_get_admin_paths()
|
|
|
+ * @see hook_admin_paths()
|
|
|
+ * @see hook_admin_paths_alter()
|
|
|
+ */
|
|
|
+function path_is_admin($path) {
|
|
|
+ $path_map = &drupal_static(__FUNCTION__);
|
|
|
+ if (!isset($path_map['admin'][$path])) {
|
|
|
+ $patterns = path_get_admin_paths();
|
|
|
+ $path_map['admin'][$path] = drupal_match_path($path, $patterns['admin']);
|
|
|
+ $path_map['non_admin'][$path] = drupal_match_path($path, $patterns['non_admin']);
|
|
|
+ }
|
|
|
+ return $path_map['admin'][$path] && !$path_map['non_admin'][$path];
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Gets a list of administrative and non-administrative paths.
|
|
|
+ *
|
|
|
+ * @return array
|
|
|
+ * An associative array containing the following keys:
|
|
|
+ * 'admin': An array of administrative paths and regular expressions
|
|
|
+ * in a format suitable for drupal_match_path().
|
|
|
+ * 'non_admin': An array of non-administrative paths and regular expressions.
|
|
|
+ *
|
|
|
+ * @see hook_admin_paths()
|
|
|
+ * @see hook_admin_paths_alter()
|
|
|
+ */
|
|
|
+function path_get_admin_paths() {
|
|
|
+ $patterns = &drupal_static(__FUNCTION__);
|
|
|
+ if (!isset($patterns)) {
|
|
|
+ $paths = module_invoke_all('admin_paths');
|
|
|
+ drupal_alter('admin_paths', $paths);
|
|
|
+ // Combine all admin paths into one array, and likewise for non-admin paths,
|
|
|
+ // for easier handling.
|
|
|
+ $patterns = array();
|
|
|
+ $patterns['admin'] = array();
|
|
|
+ $patterns['non_admin'] = array();
|
|
|
+ foreach ($paths as $path => $enabled) {
|
|
|
+ if ($enabled) {
|
|
|
+ $patterns['admin'][] = $path;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ $patterns['non_admin'][] = $path;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ $patterns['admin'] = implode("\n", $patterns['admin']);
|
|
|
+ $patterns['non_admin'] = implode("\n", $patterns['non_admin']);
|
|
|
+ }
|
|
|
+ return $patterns;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Checks a path exists and the current user has access to it.
|
|
|
+ *
|
|
|
+ * @param $path
|
|
|
+ * The path to check.
|
|
|
+ * @param $dynamic_allowed
|
|
|
+ * Whether paths with menu wildcards (like user/%) should be allowed.
|
|
|
+ *
|
|
|
+ * @return
|
|
|
+ * TRUE if it is a valid path AND the current user has access permission,
|
|
|
+ * FALSE otherwise.
|
|
|
+ */
|
|
|
+function drupal_valid_path($path, $dynamic_allowed = FALSE) {
|
|
|
+ global $menu_admin;
|
|
|
+ // We indicate that a menu administrator is running the menu access check.
|
|
|
+ $menu_admin = TRUE;
|
|
|
+ if ($path == '<front>' || url_is_external($path)) {
|
|
|
+ $item = array('access' => TRUE);
|
|
|
+ }
|
|
|
+ elseif ($dynamic_allowed && preg_match('/\/\%/', $path)) {
|
|
|
+ // Path is dynamic (ie 'user/%'), so check directly against menu_router table.
|
|
|
+ if ($item = db_query("SELECT * FROM {menu_router} where path = :path", array(':path' => $path))->fetchAssoc()) {
|
|
|
+ $item['link_path'] = $item['path'];
|
|
|
+ $item['link_title'] = $item['title'];
|
|
|
+ $item['external'] = FALSE;
|
|
|
+ $item['options'] = '';
|
|
|
+ _menu_link_translate($item);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ $item = menu_get_item($path);
|
|
|
+ }
|
|
|
+ $menu_admin = FALSE;
|
|
|
+ return $item && $item['access'];
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Clear the path cache.
|
|
|
+ *
|
|
|
+ * @param $source
|
|
|
+ * An optional system path for which an alias is being changed.
|
|
|
+ */
|
|
|
+function drupal_clear_path_cache($source = NULL) {
|
|
|
+ // Clear the drupal_lookup_path() static cache.
|
|
|
+ drupal_static_reset('drupal_lookup_path');
|
|
|
+ drupal_path_alias_whitelist_rebuild($source);
|
|
|
+}
|