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<?php
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// $Id: me.module,v 1.10 2009/01/30 21:39:28 cdale Exp $
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/**
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* @file
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*
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* Provides 'me' aliases to allow users to enter 'me' in common paths instead of their user id.
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*/
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/**
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* Constants defining the different ways paths can be matched.
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*/
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// Exclude paths
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define('ME_PATH_EXCLUDE', 0);
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// Include paths
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define('ME_PATH_INCLUDE', 1);
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// PHP for paths
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define('ME_PATH_PHP', 2);
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/**
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* Implementation of hook_help().
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*/
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function me_help($path, $arg) {
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switch ($path) {
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case 'admin/help#me':
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return t("Allows a user to enter user/me, blog/me etc.. using 'me' in place of their user id.");
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}
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}
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/**
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* Implementation of hook_theme_registry_alter().
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*/
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function me_theme_registry_alter(&$theme_registry) {
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if (isset($theme_registry['menu_item_link']['function'])) {
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variable_set('me_theme_menu_item_link_func', $theme_registry['menu_item_link']['function']);
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$theme_registry['menu_item_link']['function'] = 'me_theme_menu_item_link';
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}
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}
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/**
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* Implementaiton of moduleName_preprocess_hook() for theme_menu_item_link.
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*/
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function me_preprocess_menu_item_link(&$vars) {
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_me_check_path($vars['link']);
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}
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/**
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* Implementation of theme_menu_item_link().
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*/
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function me_theme_menu_item_link($link) {
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_me_check_path($link);
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$function = me_variable_get('me_theme_menu_item_link_func');
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return $function($link);
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}
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/**
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* Helper function to check if a path can be rewritten or not.
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*
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* By this stage, the path is already rewritten, so we need to
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* reverse the process.
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*
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* @param &$link
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* The link object to check.
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*/
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function _me_check_path(&$link) {
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// If the link has been rewritten, and we are not supposed to be handling this
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// path, then rewite it back to its original.
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if (me_variable_get('me_rewrite_link') && !_me_handle_path($link['href'])) {
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$path_parts = explode('/', $link['href'], MENU_MAX_PARTS);
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// The wildcarded path will either be in $link['path'], or $link['router_path'].
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$wild_parts = explode('/', (isset($link['path']) ? $link['path'] : $link['router_path']), MENU_MAX_PARTS);
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// Go over each of the path parts and if one is equal to the me alias, make sure it is a wildcard,
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// and if so, switch it back out.
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while (list($key, $val) = each($path_parts)) {
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if (_me_is_alias($val) && $wild_parts[$key] == '%') {
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$path_parts[$key] = $GLOBALS['user']->uid;
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}
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}
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$link['href'] = implode('/', $path_parts);
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}
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}
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/**
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* Helper function to keep all the variable gets in one place.
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*
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* @param $name
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* The variable we wish to retrieve.
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*
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* @return mixed
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* The value of the requested variable.
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*/
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function me_variable_get($name) {
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static $defaults = array(
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'me_alias' => 'me',
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'me_case_insensitive' => FALSE,
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'me_redirect' => FALSE,
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'me_path_rule' => ME_PATH_EXCLUDE,
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'me_paths' => '',
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'me_redirect_anonymous' => '',
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'me_rewrite_link' => TRUE,
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'me_theme_menu_item_link_func' => 'theme_menu_item_link',
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'me_user_override' => FALSE,
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);
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return variable_get($name, $defaults[$name]);
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}
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/**
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* Helper function to check if me should handle a given path.
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*
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* @param $path
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* The path to check
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*
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* @return boolean
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* TRUE if the path is handled by the me module. FALSE otherwise.
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*/
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function _me_handle_path($path) {
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// Match path if necessary
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$paths = me_variable_get('me_paths');
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$path_rule = me_variable_get('me_path_rule');
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$path_match = TRUE;
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if (!empty($paths)) {
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if ($path_rule !== ME_PATH_PHP) {
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$path = drupal_get_path_alias($_GET['q']);
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// Compare with the internal and path alias (if any).
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$path_match = drupal_match_path($path, $paths);
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if ($path != $_GET['q']) {
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$path_match = $path_match || drupal_match_path($_GET['q'], $paths);
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}
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// When $path_rule has a value of ME_PATH_EXCLUDE, then me works on
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// all paths except those listed in $paths. When set to ME_PATH_INCLUDE, it
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// is used only on those pages listed in $paths.
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$path_match = !($path_rule xor $path_match);
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}
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else {
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$path_match = drupal_eval($paths);
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}
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}
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return $path_match;
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}
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/**
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* A special menu callback function that either redirects to
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* a page with the uid in the path, or calls the real menu handler.
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*
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* @param $parts
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* The menu parts we are working with.
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* @param $callback
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* The page callback to call.
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* @param ...
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* count($parts) arguments for each part of the actual path
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* @param ...
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* Any extra arguments will be the real page arguments.
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*
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* @return mixed
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* Whatever the real page callback returns.
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*/
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function me_handler($parts, $callback) {
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// Get the arguments, and shift off $parts and $callback.
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$args = func_get_args();
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array_shift($args);
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array_shift($args);
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// If we want the uid shown in the address bar, we need to do a redirect.
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if (me_variable_get('me_redirect') || _me_user_disabled() || !_me_handle_path($_GET['q'])) {
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$redirect = FALSE;
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// Get the menu path arguments.
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$menu_parts = explode('/', $_GET['q'], MENU_MAX_PARTS);
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// Loop over each part. If it's a %me wildcard, then
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// check the corresponding menu part for the me alias,
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// if so, replace it out with the user id so we can redirect correctly.
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// If no changes are required, then call the required function.
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while (list($key, $val) = each($parts)) {
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if (0 === strpos($val, '%me') && _me_is_alias($menu_parts[$key])) {
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$redirect = TRUE;
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$menu_parts[$key] = $GLOBALS['user']->uid;
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}
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}
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if ($redirect) {
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$path = implode('/', $menu_parts);
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// Save on an extra redirect by also checking the anonymous redirect here.
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$redirect_path = me_variable_get('me_redirect_anonymous');
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if ($GLOBALS['user']->uid == 0 && !empty($redirect_path)) {
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$path = $redirect_path;
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}
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drupal_goto($path);
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}
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}
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return call_user_func_array($callback, $args);
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}
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/**
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* Helper function to check if a user can have, and has me disabled.
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*
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* @return boolean
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* TRUE if the user has me disabled. FALSE otherwise.
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*/
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function _me_user_disabled() {
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return me_variable_get('me_user_override') && !empty($GLOBALS['user']->me_disable);
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}
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/**
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* Implementation of hook_menu_alter().
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*/
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function me_menu_alter(&$callbacks) {
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// Loop over each of the paths, finding all %user* loaders,
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// and replace them with a %me equivelant. This should catch
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// all drupal modules that use the %user loader to load up
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// user objects, which should be most well written D6 modules.
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// Certainly all of core.
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$processed = array();
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//XXX: For now, we only handle known user loaders. I might make a module hook, or a configuration
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// area to allow these to be exteneded if users make the requests.
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$handlers = array('%user', '%user_uid_optional', '%user_category');
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foreach ($callbacks as $path => $data) {
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$found = FALSE;
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$parts = explode('/', $path, MENU_MAX_PARTS);
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foreach ($handlers as $handler) {
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if (in_array($handler, $parts)) {
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$found = TRUE;
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break;
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}
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}
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if ($found) {
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// We need to make sure that the correct files are loaded up. when the path
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// is used.
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if (isset($data['file']) && !isset($data['file path'])) {
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$data['file path'] = drupal_get_path('module', $data['module']);
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}
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// We need to find the right page callback and page arguments to make
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// the me handler work correctly.
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$new_parts = array();
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// The only load argument that needs to be passed by reference is map.
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// We make sure that we have map in the right place to be passed by reference.
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if (!is_array($data['load arguments'])) {
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$data['load arguments'] = array();
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}
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$load_arguments = array();
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while (list($key, $val) = each($parts)) {
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if (in_array($val, $handlers)) {
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$load_arguments[$key] = str_replace('%', '', $val) .'_load';
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$val = '%me';
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}
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$new_parts[] = $val;
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}
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$new_path = implode('/', $new_parts);
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// Find the current map index, and add our load arguments, putting map
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// in the place we expect it to be.
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if (FALSE !== ($map_index = array_search('%map', $data['load arguments']))) {
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unset($data['load arguments'][$map_index]);
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$map_index = strval($map_index);
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}
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array_unshift($data['load arguments'], $load_arguments, '%map', '%index', $map_index);
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// First, we need to find the parent.
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$parent_path = implode('/', array_slice($parts, 0, count($parts) - 1));
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if (in_array($parent_path, $processed)) {
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$parts = explode('/', $new_path, MENU_MAX_PARTS);
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$parent_path = implode('/', array_slice($parts, 0, count($parts) - 1));
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}
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$parent = $callbacks[$parent_path];
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if (!isset($data['page callback']) && isset($parent['page callback'])) {
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$data['page callback'] = $parent['page callback'];
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if (!isset($data['page arguments']) && isset($parent['page arguments'])) {
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$data['page arguments'] = $parent['page arguments'];
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}
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if (!isset($data['file']) && isset($parent['file'])) {
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$data['file'] = $parent['file'];
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}
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if (!isset($data['file path']) && isset($parent['file path'])) {
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$data['file path'] = $parent['file path'];
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}
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}
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if (isset($data['page callback'])) {
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if (!is_array($data['page arguments'])) {
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$data['page arguments'] = array();
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}
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$parts = explode('/', $new_path, MENU_MAX_PARTS);
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$data['page arguments'] = array_merge(array($parts, $data['page callback']), $data['page arguments']);
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$data['page callback'] = 'me_handler';
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}
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$callbacks[$new_path] = $data;
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unset($callbacks[$path]);
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$processed[] = $path;
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}
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}
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}
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/**
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* Menu load callback in place of user_load().
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*/
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function me_load($uid, $arguments, &$map, $index, $map_index = FALSE) {
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// We need to get all the arguments, remove our custom ones,
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// put %map in the right place, then call the menu load callack.
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$args = func_get_args();
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array_splice($args, 0, min(5, count($args)));
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if (FALSE !== $map_index) {
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$insert = array(
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&$map,
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);
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array_splice($args, $map_index, 0, $insert);
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$map[$index] = _me_check_arg($uid);
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}
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array_unshift($args, _me_check_arg($uid));
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// If we have a valid function to call, call it.
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if (isset($arguments[$index]) && function_exists($arguments[$index])) {
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return call_user_func_array($arguments[$index], $args);
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}
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return FALSE;
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}
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/**
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* Menu to_arg function for %me.
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*/
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function me_to_arg($arg, $map, $index) {
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$uid = user_uid_optional_to_arg($arg, $map, $index);
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if (me_variable_get('me_rewrite_link') && !_me_user_disabled()) {
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return $uid == $GLOBALS['user']->uid ? me_variable_get('me_alias') : $uid;
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}
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else {
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return $uid;
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}
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}
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| 351 |
/**
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| 352 |
* A Helper function to check for the 'me' alias.
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| 353 |
*
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* @param $arg
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* The argument to check.
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* @param $redirect
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* When TRUE, anonymous users will be redirected if a path is available.
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*
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* @return mixed
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* The current user id if a match is found, or the given argument
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* if no match.
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*/
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function _me_check_arg($arg, $redirect = TRUE) {
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| 364 |
$return = _me_is_alias($arg) ? $GLOBALS['user']->uid : $arg;
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$redirect_path = me_variable_get('me_redirect_anonymous');
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| 367 |
if ($redirect && $return == 0 && !empty($redirect_path)) {
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drupal_goto($redirect_path);
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}
|
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| 371 |
return $return;
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}
|
| 373 |
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| 374 |
/**
|
| 375 |
* A helper function to check if a string is equal to the 'me' alias.
|
| 376 |
*
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| 377 |
* @param $arg
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| 378 |
* The argument to check.
|
| 379 |
*
|
| 380 |
* @return boolean
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| 381 |
* TRUE if the argument given is a 'me' alias. FALSE otherwise.
|
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*/
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| 383 |
function _me_is_alias($arg) {
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| 384 |
$compare_function = me_variable_get('me_case_insensitive') ? 'strcasecmp' : 'strcmp';
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| 385 |
return $compare_function($arg, me_variable_get('me_alias')) === 0;
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| 386 |
}
|
| 387 |
|
| 388 |
/**
|
| 389 |
* Implementation of hook_views_api().
|
| 390 |
*/
|
| 391 |
function me_views_api() {
|
| 392 |
return array(
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| 393 |
'api' => views_api_version(),
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| 394 |
'path' => drupal_get_path('module', 'me') .'/includes',
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| 395 |
);
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| 396 |
}
|
| 397 |
|
| 398 |
/**
|
| 399 |
* Implementation of hook_menu().
|
| 400 |
*/
|
| 401 |
function me_menu() {
|
| 402 |
$items = array();
|
| 403 |
|
| 404 |
$items['admin/settings/me'] = array(
|
| 405 |
'title' => "'Me' Aliases",
|
| 406 |
'description' => "Configure the 'me' aliases, and how they're matched.",
|
| 407 |
'page callback' => 'drupal_get_form',
|
| 408 |
'page arguments' => array('me_admin_settings_form'),
|
| 409 |
'access arguments' => array('administer site configuration'),
|
| 410 |
'type' => MENU_NORMAL_ITEM,
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);
|
| 412 |
|
| 413 |
// TODO: Remove when/if http://drupal.org/node/109588 gets in.
|
| 414 |
// We don't need this here if we are doing redirects.
|
| 415 |
if (!me_variable_get('me_redirect')) {
|
| 416 |
$items['user/'. me_variable_get('me_alias') .'/edit'] = array(
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| 417 |
'title' => 'Edit',
|
| 418 |
'page callback' => 'me_user_edit',
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| 419 |
'access callback' => 'me_user_edit_access',
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'type' => MENU_LOCAL_TASK,
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);
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| 422 |
}
|
| 423 |
|
| 424 |
return $items;
|
| 425 |
}
|
| 426 |
|
| 427 |
/**
|
| 428 |
* Menu callback to redirect to the user edit pages with the correct
|
| 429 |
* user id.
|
| 430 |
*
|
| 431 |
* TODO: Remove when/if http://drupal.org/node/109588 gets in.
|
| 432 |
*/
|
| 433 |
function me_user_edit() {
|
| 434 |
drupal_goto('user/'. $GLOBALS['user']->uid .'/edit');
|
| 435 |
}
|
| 436 |
|
| 437 |
/**
|
| 438 |
* Menu access callback to check access before user edit redirection
|
| 439 |
* takes place. This keeps 'me' in the path when access will be denied
|
| 440 |
* anyway, and saves an extra request.
|
| 441 |
*
|
| 442 |
* TODO: Remove when/if http://drupal.org/node/109588 gets in.
|
| 443 |
*/
|
| 444 |
function me_user_edit_access() {
|
| 445 |
return user_edit_access($GLOBALS['user']);
|
| 446 |
}
|
| 447 |
|
| 448 |
/**
|
| 449 |
* Implementation of hook_perm().
|
| 450 |
*/
|
| 451 |
function me_perm() {
|
| 452 |
return array(
|
| 453 |
'use PHP for me alias paths',
|
| 454 |
);
|
| 455 |
}
|
| 456 |
|
| 457 |
/**
|
| 458 |
* Form callback for the admin settings form.
|
| 459 |
*/
|
| 460 |
function me_admin_settings_form(&$form_state) {
|
| 461 |
$form = array();
|
| 462 |
|
| 463 |
$form['me_alias'] = array(
|
| 464 |
'#type' => 'textfield',
|
| 465 |
'#title' => t("'Me' Alias"),
|
| 466 |
'#description' => t('The alias to use to represent the current users uid.'),
|
| 467 |
'#default_value' => me_variable_get('me_alias'),
|
| 468 |
'#required' => TRUE,
|
| 469 |
);
|
| 470 |
|
| 471 |
$form['me_case_insensitive'] = array(
|
| 472 |
'#type' => 'checkbox',
|
| 473 |
'#title' => t('Case Insensitive Alias Checking'),
|
| 474 |
'#description' => t('When checked, "Me" will be matched the same as "me", "ME", and "mE".'),
|
| 475 |
'#default_value' => me_variable_get('me_case_insensitive'),
|
| 476 |
);
|
| 477 |
|
| 478 |
$form['me_rewrite_link'] = array(
|
| 479 |
'#type' => 'checkbox',
|
| 480 |
'#title' => t('Rewrite links generated by the drupal menu system'),
|
| 481 |
'#description' => t('When checked, links output by the drupal menu system will replace uid with the me alias.'),
|
| 482 |
'#default_value' => me_variable_get('me_rewrite_link'),
|
| 483 |
);
|
| 484 |
|
| 485 |
$form['me_user_override'] = array(
|
| 486 |
'#type' => 'checkbox',
|
| 487 |
'#title' => t('Allow users to turn off me for their account'),
|
| 488 |
'#default_value' => me_variable_get('me_user_override'),
|
| 489 |
);
|
| 490 |
|
| 491 |
$form['me_redirect'] = array(
|
| 492 |
'#type' => 'checkbox',
|
| 493 |
'#title' => t('Redirect to uid'),
|
| 494 |
'#description' => t('When checked, perform a redirect so the users uid is shown in the address bar instead of the me alias.'),
|
| 495 |
'#default_value' => me_variable_get('me_redirect'),
|
| 496 |
|
| 497 |
);
|
| 498 |
|
| 499 |
$form['me_redirect_anonymous'] = array(
|
| 500 |
'#type' => 'textfield',
|
| 501 |
'#title' => t('Redirect anonymous users'),
|
| 502 |
'#description' => t('When this is non-empty, anonymous users will be redirected to the specified drupal path.'),
|
| 503 |
'#default_value' => me_variable_get('me_redirect_anonymous'),
|
| 504 |
);
|
| 505 |
|
| 506 |
$access = user_access('use PHP for me alias paths');
|
| 507 |
$path_rule = me_variable_get('me_path_rule');
|
| 508 |
$paths = me_variable_get('me_paths');
|
| 509 |
|
| 510 |
if ($path_rule == ME_PATH_PHP && !$access) {
|
| 511 |
$form['me_paths_settings'] = array();
|
| 512 |
$form['me_paths_settings']['me_path_rule'] = array('#type' => 'value', '#value' => $path_rule);
|
| 513 |
$form['me_paths_settings']['me_paths'] = array('#type' => 'value', '#value' => $paths);
|
| 514 |
}
|
| 515 |
else {
|
| 516 |
$options = array(
|
| 517 |
ME_PATH_EXCLUDE => t('Use me alias on every path except the listed paths.'),
|
| 518 |
ME_PATH_INCLUDE => t('Use me alias only on the listed paths.'),
|
| 519 |
);
|
| 520 |
$description = t("Enter one path per line as Drupal paths. The '*' character is a wildcard. Example paths are %blog for the '
|
| 521 |
.'blog page and %blog-wildcard for every personal blog. %front is the front page.",
|
| 522 |
array('%blog' => 'blog', '%blog-wildcard' => 'blog/*', '%front' => '<front>'));
|
| 523 |
|
| 524 |
if ($access) {
|
| 525 |
$options[ME_PATH_PHP] = t('Use me alias if the following PHP code returns <code>TRUE</code> (PHP-mode, experts only).');
|
| 526 |
$description .= ' '. t('If the PHP-mode is chosen, enter PHP code between %php. Note that executing incorrect PHP-code can '
|
| 527 |
.'break your Drupal site.', array('%php' => '<?php ?>'));
|
| 528 |
}
|
| 529 |
$form['me_paths_settings']['me_path_rule'] = array(
|
| 530 |
'#type' => 'radios',
|
| 531 |
'#title' => t('Use me alias on specific paths'),
|
| 532 |
'#options' => $options,
|
| 533 |
'#default_value' => $path_rule,
|
| 534 |
);
|
| 535 |
$form['me_paths_settings']['me_paths'] = array(
|
| 536 |
'#type' => 'textarea',
|
| 537 |
'#title' => t('Paths'),
|
| 538 |
'#default_value' => $paths,
|
| 539 |
'#description' => $description . t('<p>NOTE: This option simply ensures that the browser address bar for these paths have '
|
| 540 |
.'the uid and not me. The me alias will still work for these paths. It will have no effect on specific uids in paths, '
|
| 541 |
.'but if the path includes the me alias, then me will be affected for those paths. This will only affect paths '
|
| 542 |
.'that me can already handle. It will not allow me to work for unknown paths.</p>'),
|
| 543 |
);
|
| 544 |
}
|
| 545 |
|
| 546 |
$form['#validate'] = array('me_admin_settings_form_validate');
|
| 547 |
|
| 548 |
$form = system_settings_form($form);
|
| 549 |
|
| 550 |
// Quite a few options only have an affect on theme and menu rebuilds. We just do them here
|
| 551 |
// to make sure the options have an instant effect.
|
| 552 |
$form['#submit'][] = 'menu_rebuild';
|
| 553 |
$form['#submit'][] = 'drupal_rebuild_theme_registry';
|
| 554 |
|
| 555 |
return $form;
|
| 556 |
}
|
| 557 |
|
| 558 |
/**
|
| 559 |
* Validation callback for me_admin_settings_form.
|
| 560 |
*/
|
| 561 |
function me_admin_settings_form_validate($form, &$form_state) {
|
| 562 |
if (preg_match('/[^a-zA-Z]/', $form_state['values']['me_alias'])) {
|
| 563 |
form_set_error('me_alias', t('The alias can only contain characters from a-z and A-Z.'));
|
| 564 |
}
|
| 565 |
}
|
| 566 |
|
| 567 |
/**
|
| 568 |
* Implementation of hook_user().
|
| 569 |
*/
|
| 570 |
function me_user($op, &$edit, &$account, $category = NULL) {
|
| 571 |
switch ($op) {
|
| 572 |
case 'categories':
|
| 573 |
if (me_variable_get('me_user_override')) {
|
| 574 |
return array(
|
| 575 |
array(
|
| 576 |
'name' => 'me',
|
| 577 |
'title' => t("'@me' alias", array('@me' => me_variable_get('me_alias'))),
|
| 578 |
'weight' => 2,
|
| 579 |
),
|
| 580 |
);
|
| 581 |
}
|
| 582 |
break;
|
| 583 |
case 'form' && $category == 'me':
|
| 584 |
$form = array();
|
| 585 |
|
| 586 |
$form['me_uid'] = array(
|
| 587 |
'#type' => 'item',
|
| 588 |
'#title' => t('User id'),
|
| 589 |
'#value' => $account->uid,
|
| 590 |
);
|
| 591 |
|
| 592 |
$form['me_disable'] = array(
|
| 593 |
'#type' => 'checkbox',
|
| 594 |
'#title' => t("Disable '%me' alias for this account", array('%me' => me_variable_get('me_alias'))),
|
| 595 |
'#description' => t('This option stops your user id from being replaced with %me. %me will still work when entered '
|
| 596 |
.'into the address bar, but you will be redirected to a page with your uid in its place.',
|
| 597 |
array('%me' => me_variable_get('me_alias'))),
|
| 598 |
'#default_value' => !empty($account->me_disable),
|
| 599 |
);
|
| 600 |
|
| 601 |
return $form;
|
| 602 |
case 'view':
|
| 603 |
if (me_variable_get('me_user_override')) {
|
| 604 |
$enabled = 'enabled';
|
| 605 |
if (!empty($account->me_disable)) {
|
| 606 |
$enabled = 'disabled';
|
| 607 |
}
|
| 608 |
|
| 609 |
$account->content['me'] = array(
|
| 610 |
'#type' => 'markup',
|
| 611 |
'#value' => t("'%me' aliases are $enabled for this account. Account user id is '@uid'.",
|
| 612 |
array('%me' => me_variable_get('me_alias'), '@uid' => $account->uid)),
|
| 613 |
'#weight' => 10,
|
| 614 |
);
|
| 615 |
}
|
| 616 |
break;
|
| 617 |
}
|
| 618 |
}
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