boinc/html/inc/forum_rss.inc

134 lines
4.4 KiB
PHP

<?php
// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2009 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
require_once("../inc/forum.inc");
require_once("../inc/boinc_db.inc");
require_once("../inc/text_transform.inc");
// return true if the given HTML may contain images or video
//
function contains_image_or_video($x) {
if (strstr($x, "<img ")) return true;
if (strstr($x, "<object ")) return true;
if (strstr($x, "<iframe ")) return true;
return false;
}
function show_forum_rss_item($thread, $userid, $threads_only, $no_images) {
$unique_url=secure_url_base()."forum_thread.php?id=".$thread->id;
$clause2 = " and hidden=0 ";
if ($userid) $clause2 .= "and user=$userid";
if ($threads_only) {
$posts = BoincPost::enum("thread=$thread->id $clause2 order by id limit 1");
} else {
$posts = BoincPost::enum("thread=$thread->id $clause2 order by timestamp desc limit 1");
}
if (!count($posts)) return;
$post = $posts[0];
$post_date = gmdate('D, d M Y H:i:s',$post->timestamp).' GMT';
$post_user = BOincUser::lookup_id($post->user);
BoincForumPrefs::lookup($post_user);
$options = new output_options();
if (is_admin($post_user)) {
$options->htmlitems = false;
}
$t = output_transform($post->content, $options);
if ($no_images && contains_image_or_video($t)) return;
echo "<item>
<title><![CDATA[".sanitize_tags(bb2html($thread->title))."]]></title>
<link>$unique_url</link>
<guid isPermaLink=\"true\">$unique_url</guid>
<description><![CDATA[\n$t\n]]></description>
<pubDate>$post_date</pubDate>
</item>
";
}
function forum_rss($forumid, $userid, $threads_only, $ndays) {
$clause = "forum=$forumid ";
if ($userid) {
$user = BoincUser::lookup_id($userid);
if (!$user) error_page("no such user");
$clause .= " and owner=$userid";
}
$tlimit = time() - $ndays*86400;
if ($threads_only) {
$q = "$clause and hidden=0 and create_time > $tlimit order by create_time desc";
} else {
$q = "$clause and hidden=0 and timestamp > $tlimit order by timestamp desc";
}
$threads = BoincThread::enum($q);
// Get unix time that last modification was made to the news source
//
// Now construct header
//
header ("Expires: " . gmdate('D, d M Y H:i:s', time()+86400) . " GMT");
if (sizeof($threads)) {
$t = $threads[0];
$last_mod_time = $threads_only?$t->create_time:$t->timestamp;
$create_date = gmdate('D, d M Y H:i:s', $last_mod_time) . ' GMT';
header ("Last-Modified: " . $create_date);
} else {
$create_date = gmdate('D, d M Y H:i:s') . ' GMT';
}
header ("Content-Type: application/xml");
$forum=BoincForum::lookup_id($forumid);
// Create channel header and open XML content
//
$description = PROJECT.": $forum->title";
if ($userid) {
$description .= " (posts by $user->name)";
}
$channel_image = secure_url_base() . "rss_image.gif";
$language = "en-us";
echo "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>
<rss version=\"2.0\">
<channel>
<title>".$description."</title>
<description>".$description."</description>
<link>".secure_url_base()."</link>
<copyright>".COPYRIGHT_HOLDER."</copyright>
<lastBuildDate>".$create_date."</lastBuildDate>
<language>".$language."</language>
<image>
<url>".$channel_image."</url>
<title>".PROJECT."</title>
<link>".secure_url_base()."</link>
</image>
";
foreach ($threads as $thread) {
show_forum_rss_item($thread, $userid, $threads_only, false);
}
echo "
</channel>
</rss>
";
}
?>