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<?php
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// $Id: simplefeed.module,v 1.45 2008/02/05 01:54:03 csevb10 Exp $
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/**
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* @file
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* Parse feeds into nodes.
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*/
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/**
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* Implementation of hook_init().
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*/
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function simplefeed_init() {
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// ensure we are not serving a cached page
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if (function_exists('drupal_set_content')) {
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// we don't do this in hook_menu to ensure the files are already included when
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// views_menu is executed
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if (module_exists('views')) {
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include_once('./'. drupal_get_path('module', 'simplefeed') .'/simplefeed_views.inc');
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}
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if (module_exists('token')) {
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include_once('./'. drupal_get_path('module', 'simplefeed') .'/simplefeed_token.inc');
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}
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}
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}
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/**
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* Implementation of hook_menu().
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*/
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function simplefeed_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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$items[] = array(
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'path' => 'admin/settings/simplefeed',
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'title' => t('SimpleFeed'),
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'description' => t('Configure how feeds are parsed.'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('simplefeed_admin_settings'),
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'access' => user_access('administer feeds'),
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);
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}
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else {
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$items[] = array(
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'path' => 'feed/refresh/'. arg(2),
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'title' => t('Refresh feed'),
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'callback' => 'simplefeed_feed_refresh',
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'callback arguments' => array(arg(2)),
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'access' => user_access('administer feeds'),
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'type' => MENU_CALLBACK
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);
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$items[] = array(
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'path' => 'feed/empty/'. arg(2),
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'title' => t('Empty feed'),
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'callback' => 'simplefeed_feed_empty',
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'callback arguments' => array(arg(2)),
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'access' => user_access('administer feeds'),
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'type' => MENU_CALLBACK
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);
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}
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return $items;
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}
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/**
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* Implementation of hook_perm().
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*/
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function simplefeed_perm() {
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return array('create feeds', 'edit own feeds', 'edit feeds', 'administer feeds');
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}
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/**
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* Implementation of hook_access().
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*/
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function simplefeed_access($op, $node) {
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global $user;
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switch ($op) {
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case 'create':
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return user_access('create feeds');
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break;
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case 'update':
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case 'delete':
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// users who create a feed may edit or delete it later, assuming they have the necessary permissions
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if ((user_access('edit own feeds') && ($user->uid == $node->uid)) || user_access('edit feeds')) {
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return TRUE;
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}
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break;
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}
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}
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/**
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* Implementation of hook_node_info().
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*/
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function simplefeed_node_info() {
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return array(
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'feed' => array(
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'name' => t('Feed'),
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'module' => 'simplefeed',
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'description' => t('Aggregate an RSS or Atom syndication feed.'),
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'body_label' => t('Description'),
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),
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);
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}
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/**
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* Implementation of hook_form().
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*/
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function simplefeed_form(&$node) {
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$type = node_get_types('type', $node);
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$form['title'] = array(
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'#type' => 'textfield',
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'#title' => check_plain($type->title_label),
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'#required' => TRUE,
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'#default_value' => $node->title,
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'#weight' => -5,
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);
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$form['body_filter']['body'] = array(
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'#type' => 'textarea',
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'#title' => check_plain($type->body_label),
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'#default_value' => $node->body,
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'#rows' => 3,
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'#required' => TRUE,
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);
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$form['body_filter']['format'] = filter_form($node->format);
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$form['url'] = array(
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'#type' => 'textfield',
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'#title' => t('URL'),
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'#description' => t('The URL for this feed.'),
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'#default_value' => isset($node->url) ? $node->url : 'http://www.',
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'#maxlength' => 255,
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'#required' => TRUE,
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);
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if (user_access('administer feeds')) {
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$form['feed_settings'] = array(
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'#type' => 'fieldset',
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'#title' => t('Feed settings'),
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'#collapsible' => TRUE,
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'#collapsed' => TRUE,
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);
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$period = array(0 => t('Never')) + drupal_map_assoc(array(3600, 10800, 21600, 32400, 43200, 86400, 172800, 259200, 604800, 1209600, 2419200, 4838400, 9676800), 'format_interval');
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$form['feed_settings']['expires'] = array(
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'#type' => 'select',
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'#title' => t('Discard feed items older than'),
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'#default_value' => isset($node->expires) ? $node->expires : variable_get('simplefeed_expires', 86400),
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'#options' => $period,
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'#description' => t('Older feed items will be automatically discarded. Requires !cron to be running.', array('!cron' => l('cron', 'admin/logs/status'))),
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);
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$period = array(0 => t('Never'), 1 => t('Manual')) + drupal_map_assoc(array(900, 1800, 3600, 7200, 10800, 21600, 32400, 43200, 64800, 86400, 172800, 259200, 604800), 'format_interval');
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$form['feed_settings']['refresh'] = array(
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'#type' => 'select',
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'#title' => t('Check feed every'),
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'#description' => t('How often should a feed be checked for new content? If you select "manual", you can update a feed by clicking "refresh this feed" below the feed node. If you select a time, !cron must be running.', array('!cron' => l('cron', 'admin/logs/status'))),
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'#options' => $period,
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'#default_value' => isset($node->refresh) ? $node->refresh : variable_get('simplefeed_refresh', 3600),
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);
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}
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else {
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$form['feed_settings']['expires'] = array('#type' => 'value', '#value' => variable_get('simplefeed_expires', 86400));
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$form['feed_settings']['refresh'] = array('#type' => 'value', '#value' => variable_get('simplefeed_refresh', 3600));
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}
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return $form;
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}
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/**
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* Implementation of hook_validate().
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*/
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function simplefeed_validate($node) {
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$valid_url = "`(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?`";
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$url = trim($node->url);
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if (preg_match($valid_url, $url)) {
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$duplicate = db_result(db_query("SELECT nid FROM {simplefeed_feed} WHERE url = '%s'", $node->url));
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// make sure this URL does not exist already
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// if this node is being updated make sure it doesn't trigger a duplicate warning
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if ($duplicate != '' && $duplicate != $node->nid) {
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form_set_error('url', t('The URL entered already exists. Please try a different URL.'));
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}
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}
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else {
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form_set_error('url', t('The URL entered is not valid. It should be in the format of: %url_format', array('%url_format' => 'http://www.example.com/rss.xml')));
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}
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}
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/**
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* Implementation of hook_load().
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*/
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function simplefeed_load($node) {
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$additions = db_fetch_object(db_query('SELECT url, expires, refresh, checked FROM {simplefeed_feed} WHERE vid = %d', $node->vid));
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return $additions;
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}
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/**
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* Implementation of hook_insert().
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*/
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function simplefeed_insert($node) {
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db_query("INSERT INTO {simplefeed_feed} (vid, nid, url, expires, refresh) VALUES (%d, %d, '%s', %d, %d)", $node->vid, $node->nid, $node->url, $node->expires, $node->refresh);
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}
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/**
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* Implementation of hook_update().
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*/
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function simplefeed_update($node) {
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// if this is a new node or we're adding a new revision
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if ($node->revision) {
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simplefeed_insert($node);
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}
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else {
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db_query("UPDATE {simplefeed_feed} SET url = '%s', expires = %d, refresh = %d WHERE vid = %d", $node->url, $node->expires, $node->refresh, $node->vid);
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}
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}
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/**
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* Implementation of hook_delete().
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*/
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function simplefeed_delete($node) {
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// delete the feed
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db_query('DELETE FROM {simplefeed_feed} WHERE nid = %d', $node->nid);
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// delete all feed items associated with this feed
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$feed_items = db_query('SELECT nid FROM {simplefeed_feed_item} WHERE fid = %d', $node->nid);
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while ($feed_item = db_fetch_object($feed_items)) {
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node_delete($feed_item->nid);
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}
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db_query('DELETE FROM {simplefeed_feed_item} WHERE fid = %d', $node->nid);
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function simplefeed_nodeapi(&$node, $op, $teaser, $page) {
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switch ($op) {
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case 'delete revision':
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db_query('DELETE FROM {simplefeed_feed} WHERE vid = %d', $node->vid);
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break;
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}
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}
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/**
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* Implementation of hook_view().
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*/
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function simplefeed_view($node, $teaser = FALSE, $page = FALSE) {
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$node = node_prepare($node, $teaser);
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$node->content['simplefeed']['#theme'] = 'simplefeed_node_view';
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$node->content['simplefeed']['#weight'] = 2;
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$node->content['simplefeed']['url'] = array(
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'#value' => check_url($node->url),
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'#weight' => 1,
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);
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// since only administrators can edit when a feed expires, only admins can see what this value is
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if (user_access('administer feeds')) {
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$node->content['simplefeed']['expires'] = array(
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'#value' => format_interval($node->expires),
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);
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$node->content['simplefeed']['refresh'] = array(
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'#value' => format_interval($node->refresh),
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);
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$node->content['simplefeed']['checked'] = array(
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'#value' => $node->checked > 0 ? format_interval(time() - $node->checked) . t(' ago') : t('Never'),
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);
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}
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return $node;
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}
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/**
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* Theme the display of a feed node.
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*/
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function theme_simplefeed_node_view($values) {
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// needs to be a space so default values aren't outputed
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$output = ' ';
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// since only administrators can edit when a feed expires, only admins can see what this value is
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if (user_access('administer feeds')) {
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drupal_add_css(drupal_get_path('module', 'simplefeed') .'/simplefeed.css');
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$output .= '<ul class="simplefeed">';
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$output .= '<li><strong>Expires:</strong> '. $values['expires']['#value'] .'</li>';
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$output .= '<li><strong>Refresh:</strong> '. $values['refresh']['#value'] .'</li>';
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$output .= '<li><strong>Checked:</strong> '. $values['checked']['#value'] .'</li>';
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$output .= '</ul>';
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}
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return $output;
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}
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/**
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* Implementation of hook_link().
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*/
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function simplefeed_link($type, $node = NULL, $teaser = FALSE) {
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$links = array();
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if ($type == 'node' && $node->type == 'feed') {
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if (module_exists('views')) {
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$links['simplefeed_view_feed_items'] = array(
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'title' => t('View feed items'),
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'href' => 'feeds/'. $node->nid,
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'attributes' => array('title' => t('View feed items')),
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);
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}
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// only admins can force a feed to update or delete all feed items
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if (user_access('administer feeds')) {
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// don't show if the feed is marked not to refresh, since the link won't do anything in this case
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if ($node->refresh > 0) {
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$links['simplefeed_refresh'] = array(
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'title' => t('Refresh this feed'),
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'href' => 'feed/refresh/'. $node->vid,
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);
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}
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$links['simplefeed_delete'] = array(
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'title' => t('Empty this feed'),
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'href' => 'feed/empty/'. $node->nid,
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'attributes' => array("title" => "Delete all feed items associated with this feed")
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);
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}
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}
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return $links;
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}
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/**
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* Administrative settings.
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*/
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function simplefeed_admin_settings() {
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$form['feed_settings'] = array(
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'#type' => 'fieldset',
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'#title' => t('Default feed settings'),
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'#description' => t('Default settings for each feed that is added. Note, that some of these settings can be overriden by editing any specific feed node.'),
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'#collapsible' => TRUE,
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'#access' => user_access('administer feeds'),
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);
|
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$period = array(0 => t('Never')) + drupal_map_assoc(array(3600, 10800, 21600, 32400, 43200, 86400, 172800, 259200, 604800, 1209600, 2419200, 4838400, 9676800), 'format_interval');
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$form['feed_settings']['simplefeed_expires'] = array(
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'#type' => 'select',
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'#title' => t('Discard feed items older than'),
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'#default_value' => variable_get('simplefeed_expires', 86400),
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| 367 |
'#options' => $period,
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| 368 |
'#description' => t('Older feed items will be automatically discarded. Requires !cron to be running.', array('!cron' => l('cron', 'admin/logs/status'))),
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| 369 |
);
|
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$period = array(0 => t('Never'), 1 => t('Manual')) + drupal_map_assoc(array(900, 1800, 3600, 7200, 10800, 21600, 32400, 43200, 64800, 86400, 172800, 259200, 604800), 'format_interval');
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$form['feed_settings']['simplefeed_refresh'] = array(
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| 373 |
'#type' => 'select',
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| 374 |
'#title' => t('Check feeds every'),
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| 375 |
'#description' => t('How often should a feed be checked for new content? If you select "manual", you can update a feed by clicking "refresh this feed" below the feed node. If you select a time, !cron must be running.', array('!cron' => l('cron', 'admin/logs/status'))),
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| 376 |
'#options' => $period,
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| 377 |
'#default_value' => variable_get('simplefeed_refresh', 3600),
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| 378 |
);
|
| 379 |
|
| 380 |
foreach (filter_formats() as $id => $format) {
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| 381 |
$formats[$id] = $format->name;
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| 382 |
}
|
| 383 |
$form['simplefeed_format'] = array(
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| 384 |
'#type' => 'select',
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| 385 |
'#title' => t('Default input format'),
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| 386 |
'#description' => t('The default input format for feeds (e.g., which HTML tags to not strip out).'),
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| 387 |
'#options' => $formats,
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| 388 |
'#default_value' => variable_get('simplefeed_format', 1),
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);
|
| 390 |
|
| 391 |
// only if taxonomy is enabled will these options work
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| 392 |
if (module_exists('taxonomy')) {
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| 393 |
$vocabularies = taxonomy_get_vocabularies();
|
| 394 |
$vocabularies_list = array(0 => 'None');
|
| 395 |
foreach ($vocabularies as $vocabulary) {
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| 396 |
$vocabularies_list[$vocabulary->vid] = check_plain($vocabulary->name);
|
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}
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| 398 |
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| 399 |
$form['simplefeed_vocab'] = array(
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| 400 |
'#type' => 'select',
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'#title' => t('Vocabulary'),
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'#description' => t("Select a vocabulary that both feeds and feed items share to have feed items automatically inherit their feed parent's terms when created. Select none to disable this feature."),
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'#options' => $vocabularies_list,
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| 404 |
'#default_value' => variable_get('simplefeed_vocab', 0),
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| 405 |
);
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| 406 |
$form['#validate']['simplefeed_settings_validate'] = array();
|
| 407 |
|
| 408 |
$form['simplefeed_categories'] = array(
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| 409 |
'#type' => 'checkbox',
|
| 410 |
'#title' => t('Automatically add categories set by external feeds to the vocabulary above.'),
|
| 411 |
'#description' => t('This is useful when external feeds provide their own categories. These categories can then be merged into the main vocabulary defined above.'),
|
| 412 |
'#default_value' => variable_get('simplefeed_categories', 0),
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);
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| 414 |
}
|
| 415 |
|
| 416 |
$throttle = drupal_map_assoc(array(5, 10, 15, 20, 25, 50, 100, 'unlimited'));
|
| 417 |
$form['simplefeed_cron_throttle'] = array(
|
| 418 |
'#type' => 'select',
|
| 419 |
'#title' => t('Cron throttle'),
|
| 420 |
'#description' => t('The number of feeds to parse each cron run.'),
|
| 421 |
'#options' => $throttle,
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| 422 |
'#default_value' => variable_get('simplefeed_cron_throttle', 50),
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| 423 |
);
|
| 424 |
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| 425 |
return system_settings_form($form);
|
| 426 |
}
|
| 427 |
|
| 428 |
|
| 429 |
/**
|
| 430 |
* Validate the SimpleFeed settings.
|
| 431 |
*/
|
| 432 |
function simplefeed_settings_validate($form_id, $form_values) {
|
| 433 |
// ensure that the vocab selected has been selected to be used by both feed and feed item node types
|
| 434 |
if ($form_values['simplefeed_vocab']) {
|
| 435 |
$check = array();
|
| 436 |
$types = db_query('SELECT type FROM {vocabulary_node_types} WHERE vid = %d', $form_values['simplefeed_vocab']);
|
| 437 |
$tags = db_result(db_query('SELECT tags FROM {vocabulary} WHERE vid = %d', $form_values['simplefeed_vocab']));
|
| 438 |
while ($type = db_fetch_object($types)) {
|
| 439 |
$check[] = $type->type;
|
| 440 |
}
|
| 441 |
|
| 442 |
if (!$tags) {
|
| 443 |
form_set_error('simplefeed_vocab', t('Automatic term inheritance from parent feed to child feed items requires that this vocabulary has <em>free tagging</em> enabled.'));
|
| 444 |
}
|
| 445 |
|
| 446 |
if (!in_array('feed', $check) || !in_array('feed_item', $check)) {
|
| 447 |
form_set_error('simplefeed_vocab', t('If you want to use this vocabulary, you need to associate it with both the <em>feed</em> and <em>feed item</em> node types.'));
|
| 448 |
}
|
| 449 |
}
|
| 450 |
|
| 451 |
// you can't add categories to a non-existent vocab
|
| 452 |
if ($form_values['simplefeed_categories'] && !$form_values['simplefeed_vocab']) {
|
| 453 |
form_set_error('simplefeed_categories', t('You must specify a valid vocabulary if you want to automatically add categories.'));
|
| 454 |
}
|
| 455 |
}
|
| 456 |
|
| 457 |
|
| 458 |
/**
|
| 459 |
* Implementation of hook_cron().
|
| 460 |
*/
|
| 461 |
function simplefeed_cron() {
|
| 462 |
simplefeed_feed_refresh();
|
| 463 |
simplefeed_item_feed_expire();
|
| 464 |
}
|
| 465 |
|
| 466 |
|
| 467 |
/**
|
| 468 |
* Refresh a feed, downloading any new feed items and creating nodes for them.
|
| 469 |
*/
|
| 470 |
function simplefeed_feed_refresh($nid = NULL) {
|
| 471 |
// figure out which feeds to update
|
| 472 |
if (is_numeric($nid)) {
|
| 473 |
// refresh a specific feed
|
| 474 |
// since a $vid is specified, we are looking at a specific feed node so we allow either "manual" or anytime option to be a valid value to push a refresh
|
| 475 |
$process_feeds = db_query('SELECT n.nid FROM {node} n INNER JOIN {simplefeed_feed} s ON s.vid = n.vid WHERE n.nid = %d AND n.status = 1 AND s.refresh > 0', $nid);
|
| 476 |
}
|
| 477 |
else {
|
| 478 |
// refresh all feeds
|
| 479 |
$limit = variable_get('simplefeed_cron_throttle', 50);
|
| 480 |
// limit in ASC order so we grab the top N that haven't been checked recently
|
| 481 |
// we can only update feed nodes that have a valid refresh time set; ignore "never" and "manual" options
|
| 482 |
$query = 'SELECT s.nid FROM {simplefeed_feed} s INNER JOIN {node} n ON s.vid = n.vid WHERE ((%d - s.checked) >= s.refresh) AND n.status = 1 AND s.refresh > 1 ORDER BY s.checked ASC';
|
| 483 |
if ($limit != 'unlimited') {
|
| 484 |
$process_feeds = db_query_range($query, time(), 0, $limit);
|
| 485 |
}
|
| 486 |
else {
|
| 487 |
$process_feeds = db_query($query, time());
|
| 488 |
}
|
| 489 |
}
|
| 490 |
|
| 491 |
// build cache path
|
| 492 |
$cache_path = file_create_path('cache_simplefeed');
|
| 493 |
file_check_directory($cache_path, FILE_CREATE_DIRECTORY);
|
| 494 |
|
| 495 |
// process each feed
|
| 496 |
while ($process_feed = db_fetch_object($process_feeds)) {
|
| 497 |
$process_feed = node_load($process_feed->nid);
|
| 498 |
// above we define hook_view() which then performs check_url() on the $url in the feed node
|
| 499 |
// the problem is check_url() calls filter_xss_bad_protocol() which does it thing to prevent XSS
|
| 500 |
// but it returns the string through check_plain() which calls htmlspecialchars()
|
| 501 |
// this converts & in a url to & and then causes SimplePie not to be able to parse it
|
| 502 |
// because of this, we decode this URL since we are passing it directly to SimplePie
|
| 503 |
// it is still encoded everywhere else it is output to prevent XSS
|
| 504 |
$process_feed->url = htmlspecialchars_decode($process_feed->url, ENT_QUOTES);
|
| 505 |
$process_feed->tags = '';
|
| 506 |
$process_feed->vocab = 0;
|
| 507 |
|
| 508 |
// gather tags for feed to pass to feed item children
|
| 509 |
if ($process_feed->vocab = variable_get('simplefeed_vocab', 0)) {
|
| 510 |
$terms = taxonomy_node_get_terms_by_vocabulary($process_feed->nid, $process_feed->vocab);
|
| 511 |
$taxonomy = array();
|
| 512 |
if (!empty($terms)) {
|
| 513 |
foreach ($terms as $term) {
|
| 514 |
$taxonomy[] = $term->name;
|
| 515 |
}
|
| 516 |
}
|
| 517 |
$process_feed->tags = implode($taxonomy, ', ');
|
| 518 |
}
|
| 519 |
|
| 520 |
// turn each feed item into a node
|
| 521 |
simplefeed_item_feed_parse($process_feed, $cache_path);
|
| 522 |
|
| 523 |
// finished processing this feed so we can mark it checked
|
| 524 |
db_query('UPDATE {simplefeed_feed} SET checked = %d WHERE vid = %d', time(), $process_feed->vid);
|
| 525 |
}
|
| 526 |
|
| 527 |
// if you're manually refreshing a feed, redirect back to the feed node
|
| 528 |
if ($nid) {
|
| 529 |
drupal_set_message(t('Feed refreshed.'));
|
| 530 |
drupal_goto('node/'. $nid);
|
| 531 |
}
|
| 532 |
}
|
| 533 |
|
| 534 |
|
| 535 |
/**
|
| 536 |
* Delete all feed items associated with a feed.
|
| 537 |
*/
|
| 538 |
function simplefeed_feed_empty($nid) {
|
| 539 |
if (is_numeric($nid)) {
|
| 540 |
$nodes = db_query("SELECT nid FROM {simplefeed_feed_item} WHERE fid = %d", $nid);
|
| 541 |
while ($node = db_fetch_object($nodes)) {
|
| 542 |
node_delete($node->nid);
|
| 543 |
}
|
| 544 |
drupal_set_message(t('Feed emptied.'));
|
| 545 |
drupal_goto('node/'. $nid);
|
| 546 |
}
|
| 547 |
else {
|
| 548 |
drupal_not_found();
|
| 549 |
exit;
|
| 550 |
}
|
| 551 |
}
|
| 552 |
|
| 553 |
/**
|
| 554 |
* Implementation of hook_requirements().
|
| 555 |
*/
|
| 556 |
function simplefeed_requirements($phase) {
|
| 557 |
$requirements = array();
|
| 558 |
// Ensure translations don't break at install time.
|
| 559 |
$t = get_t();
|
| 560 |
|
| 561 |
if ($phase == 'runtime') {
|
| 562 |
$path = drupal_get_path('module', 'simplefeed');
|
| 563 |
|
| 564 |
if (!file_exists($path .'/simplepie.inc')) {
|
| 565 |
$requirements['simplepie'] = array(
|
| 566 |
'title' => $t('SimpleFeed'),
|
| 567 |
'value' => $t('SimplePie library missing'),
|
| 568 |
'severity' => REQUIREMENT_ERROR,
|
| 569 |
'description' => $t('SimpleFeed requires the <a href="http://simplepie.org/">SimplePie</a> library to properly parse feeds. Please download either the 1.0 or 1.1 development (recommended) version and place simplepie.inc in your SimpleFeed module directory.'),
|
| 570 |
);
|
| 571 |
}
|
| 572 |
}
|
| 573 |
return $requirements;
|
| 574 |
}
|
| 575 |
|
| 576 |
/**
|
| 577 |
* This is a PHP4 compatibility function -- not needed since this is already in PHP5
|
| 578 |
*/
|
| 579 |
if (!function_exists("htmlspecialchars_decode")) {
|
| 580 |
function htmlspecialchars_decode($string, $quote_style = ENT_COMPAT) {
|
| 581 |
return strtr($string, array_flip(get_html_translation_table(HTML_SPECIALCHARS, $quote_style)));
|
| 582 |
}
|
| 583 |
}
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