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block_rss_client_action.php
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block_rss_client_action.php
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<?php //$Id$
/*******************************************************************
* This file contains no classes. It will display a list of existing feeds
* defined for the site and allow add/edit/delete of site feeds.
*
* @author Daryl Hawes
* @version $Id$
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package base
******************************************************************/
require_once('../../config.php');
require_once($CFG->libdir .'/rsslib.php');
require_once(MAGPIE_DIR .'rss_fetch.inc');
require_login();
global $USER;
//ensure that the logged in user is not using the guest account
if (isset($_SERVER['HTTP_REFERER'])) {
$referrer = $_SERVER['HTTP_REFERER'];
} else {
$referrer = $CFG->wwwroot;
}
if (isguest()) {
error(get_string('noguestpost', 'forum'), $referrer);
}
$act = optional_param('act', NULL, PARAM_ALPHA);
$rssid = optional_param('rssid', NULL, PARAM_INT);
$id = optional_param('id', SITEID, PARAM_INT);
$url = optional_param('url', NULL, PARAM_URL);
$preferredtitle = optional_param('preferredtitle', '', PARAM_ALPHA);
if (!defined('MAGPIE_OUTPUT_ENCODING')) {
define('MAGPIE_OUTPUT_ENCODING', get_string('thischarset')); // see bug 3107
}
if (!empty($id)) {
// we get the complete $course object here because print_header assumes this is
// a complete object (needed for proper course theme settings)
$course = get_record('course', 'id', $id);
}
$straddedit = get_string('feedsaddedit', 'block_rss_client');
if ( isadmin() ) {
$navigation = '<a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/index.php">'.get_string('administration').'</a> -> '.
'<a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/configure.php">'.get_string('configuration').'</a> -> '.$straddedit;
} else if (!empty($course)) {
$navigation = '<a href="'.$CFG->wwwroot.'/course/view.php?id='.$id.'">'.$course->shortname.'</a> -> '.$straddedit;
} else {
$navigation = $straddedit;
}
print_header($straddedit, $straddedit, $navigation);
//check to make sure that the user is allowed to post new feeds
$submitters = $CFG->block_rss_client_submitters;
$isteacher = empty($course) ? false : isteacher($id);
if ( !isset($act) ) {
rss_display_feeds($id);
rss_print_form($act, $url, $rssid, $preferredtitle, $id);
print_footer();
die();
}
if ( isset($rssid) ) {
$rss_record = get_record('block_rss_client', 'id', $rssid);
}
//if the user is an admin or course teacher then allow the user to
//assign categories to other uses than personal
if (isset($rss_record) && !( isadmin() || $submitters == SUBMITTERS_ALL_ACCOUNT_HOLDERS ||
($submitters == SUBMITTERS_ADMIN_AND_TEACHER && $isteacher) ||
( ($act == 'rssedit' || $act == 'delfeed' || $act == 'updfeed') && $USER->id == $rss_record->userid) ) ) {
error(get_string('noguestpost', 'forum').' You are not allowed to make modifications to this RSS feed at this time.', $referrer);
}
if ($act == 'updfeed') {
if (empty($url)) {
error( 'url not defined for rss feed' );
}
// By capturing the output from fetch_rss this way
// error messages do not display and clutter up the moodle interface
// however, we do lose out on seeing helpful messages like "cache hit", etc.
$message = '';
ob_start();
$rss = fetch_rss($url);
if ($CFG->debug) {
$message .= ob_get_contents();
}
ob_end_clean();
$dataobject->id = $rssid;
if ($rss === false) {
$dataobject->description = '';
$dataobject->title = '';
$dataobject->preferredtitle = '';
} else {
$dataobject->description = addslashes(rss_unhtmlentities($rss->channel['description']));
$dataobject->title = addslashes(rss_unhtmlentities($rss->channel['title']));
$dataobject->preferredtitle = addslashes($preferredtitle);
}
$dataobject->url = addslashes($url);
if (!update_record('block_rss_client', $dataobject)) {
error('There was an error trying to update rss feed with id:'. $rssid);
}
$message .= '<br />'. get_string('feedupdated', 'block_rss_client');
redirect($referrer, $message);
} else if ($act == 'addfeed' ) {
if (empty($url)) {
error('url not defined for rss feed');
}
$dataobject->userid = $USER->id;
$dataobject->description = '';
$dataobject->title = '';
// attempting to replace feed and rss url types with http
// it appears that the rss feed validator will validate these url types but magpie will not load them
$url = str_replace ("feed://", "http://", "$url");
$url = str_replace ("FEED://", "http://", "$url");
$url = str_replace ("rss://", "http://", "$url");
$url = str_replace ("RSS://", "http://", "$url");
$dataobject->url = addslashes($url);
$dataobject->preferredtitle = addslashes($preferredtitle);
$rssid = insert_record('block_rss_client', $dataobject);
if (!$rssid) {
error('There was an error trying to add a new rss feed:'. $url);
}
// By capturing the output from fetch_rss this way
// error messages do not display and clutter up the moodle interface
// however, we do lose out on seeing helpful messages like "cache hit", etc.
$message = '';
ob_start();
$rss = fetch_rss($url);
if ($CFG->debug) {
$message .= ob_get_contents();
}
ob_end_clean();
if ($rss === false) {
$message .= '<br /><br />There was an error loading this rss feed. You may want to verify the url you have specified before using it.'; //Daryl Hawes note: localize this line
} else {
$dataobject->id = $rssid;
if (!empty($rss->channel['description'])) {
$dataobject->description = addslashes(rss_unhtmlentities($rss->channel['description']));
}
if (!empty($rss->channel['title'])) {
$dataobject->title = addslashes(rss_unhtmlentities($rss->channel['title']));
}
if (!update_record('block_rss_client', $dataobject)) {
error('There was an error trying to update rss feed with id:'. $rssid);
}
$message .= '<br />'. get_string('feedadded', 'block_rss_client');
}
redirect($referrer, $message);
/*
rss_display_feeds($id);
rss_print_form($act, $dataobject->url, $dataobject->id, $dataobject->preferredtitle, $id);
*/
} else if ( isset($rss_record) && $act == 'rssedit' ) {
$preferredtitle = stripslashes_safe($rss_record->preferredtitle);
if (empty($preferredtitle)) {
$preferredtitle = stripslashes_safe($rss_record->title);
}
$url = stripslashes_safe($rss_record->url);
rss_display_feeds($id, '', $rssid);
rss_print_form($act, $url, $rssid, $preferredtitle, $id);
} else if ($act == 'delfeed') {
$file = $CFG->dataroot .'/cache/rsscache/'. $rssid .'.xml';
if (file_exists($file)) {
unlink($file);
}
// echo "DEBUG: act = delfeed"; //debug
delete_records('block_rss_client', 'id', $rssid);
redirect($referrer, get_string('feeddeleted', 'block_rss_client') );
} else if ( isset($rss_record) && $act == 'view' ) {
// echo $sql; //debug
// print_object($res); //debug
if (!$rss_record->id) {
print '<strong>'. get_string('couldnotfindfeed', 'block_rss_client') .': '. $rssid .'</strong>';
} else {
// By capturing the output from fetch_rss this way
// error messages do not display and clutter up the moodle interface
// however, we do lose out on seeing helpful messages like "cache hit", etc.
ob_start();
$rss = fetch_rss($rss_record->url);
ob_end_clean();
if (empty($rss_record->preferredtitle)) {
$feedtitle = stripslashes_safe($rss_record->preferredtitle);
} else {
$feedtitle = stripslashes_safe(rss_unhtmlentities($rss->channel['title']));
}
print '<table align="center" width="50%" cellspacing="1">'."\n";
print '<tr><td colspan="2"><strong>'. $feedtitle .'</strong></td></tr>'."\n";
for($y=0; $y < count($rss->items); $y++) {
$rss->items[$y]['title'] = stripslashes_safe(rss_unhtmlentities($rss->items[$y]['title']));
$rss->items[$y]['description'] = stripslashes_safe(rss_unhtmlentities($rss->items[$y]['description']));
if ($rss->items[$y]['link'] == '') {
$rss->items[$y]['link'] = $rss->items[$y]['guid'];
}
if ($rss->items[$y]['title'] == '') {
$rss->items[$y]['title'] = '>>';
}
print '<tr><td valign="middle">'."\n";
print '<a href="'. $rss->items[$y]['link'] .'" target="_blank"><strong>'. $rss->items[$y]['title'];
print '</strong></a>'."\n";
print '</td>'."\n";
if (file_exists($CFG->dirroot .'/blog/lib.php')) {
//Blog module is installed - provide "blog this" link
print '<td align="right">'."\n";
print '<img src="'. $CFG->pixpath .'/blog/blog.gif" alt="'. get_string('blogthis', 'blog').'" title="'. get_string('blogthis', 'blog') .'" border="0" align="middle" />'."\n";
print '<a href="'. $CFG->wwwroot .'/blog/blogthis.php?userid='. $userid .'&act=use&item='. $y .'&rssid='. $rssid .'"><small><strong>'. get_string('blogthis', 'blog') .'</strong></small></a>'."\n";
} else {
print '<td> ';
}
print '</td></tr>'."\n";
print '<tr><td colspan=2><small>';
print $rss->items[$y]['description'] .'</small></td></tr>'."\n";
}
print '</table>'."\n";
}
} else {
rss_display_feeds($id);
rss_print_form($act, $url, $rssid, $preferredtitle, $id);
}
print_footer();
?>