/**
* Get the RSS feed
*
* This method will output the RSS feed with the last 50 posts to the
* browser.
*/
function rss()
{
HTTP::set_cache_age(3600);
// cache for one hour
$threadID = null;
$forumID = null;
// optionally allow filtering of the forum posts by the url in the format
// rss/thread/$ID or rss/forum/$ID
if (isset($this->urlParams['ID']) && ($action = $this->urlParams['ID'])) {
if (isset($this->urlParams['OtherID']) && ($id = $this->urlParams['OtherID'])) {
switch ($action) {
case 'forum':
$forumID = (int) $id;
break;
case 'thread':
$threadID = (int) $id;
}
} else {
// fallback is that it is the ID of a forum like it was in
// previous versions
$forumID = (int) $action;
}
}
$data = array('last_created' => null, 'last_id' => null);
if (!isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && !isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
// just to get the version data..
$available = ForumHolder::new_posts_available($this->ID, $data, null, null, $forumID, $threadID);
// No information provided by the client, just return the last posts
$rss = new RSSFeed($this->getRecentPosts(50, $forumID, $threadID), $this->Link() . 'rss', sprintf(_t('Forum.RSSFORUMPOSTSTO'), $this->Title), "", "Title", "RSSContent", "RSSAuthor", $data['last_created'], $data['last_id']);
return $rss->outputToBrowser();
} else {
// Return only new posts, check the request headers!
$since = null;
$etag = null;
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// Split the If-Modified-Since (Netscape < v6 gets this wrong)
$since = explode(';', $_SERVER['HTTP_IF_MODIFIED_SINCE']);
// Turn the client request If-Modified-Since into a timestamp
$since = @strtotime($since[0]);
if (!$since) {
$since = null;
}
}
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && is_numeric($_SERVER['HTTP_IF_NONE_MATCH'])) {
$etag = (int) $_SERVER['HTTP_IF_NONE_MATCH'];
}
if ($available = ForumHolder::new_posts_available($this->ID, $data, $since, $etag, $forumID, $threadID)) {
HTTP::register_modification_timestamp($data['last_created']);
$rss = new RSSFeed($this->getRecentPosts(50, $forumID, $threadID, $etag), $this->Link() . 'rss', sprintf(_t('Forum.RSSFORUMPOSTSTO'), $this->Title), "", "Title", "RSSContent", "RSSAuthor", $data['last_created'], $data['last_id']);
return $rss->outputToBrowser();
} else {
if ($data['last_created']) {
HTTP::register_modification_timestamp($data['last_created']);
}
if ($data['last_id']) {
HTTP::register_etag($data['last_id']);
}
// There are no new posts, just output an "304 Not Modified" message
HTTP::add_cache_headers();
header('HTTP/1.1 304 Not Modified');
}
}
exit;
}
function testGetNewPostsAvailable()
{
$fh = $this->objFromFixture("ForumHolder", "fh");
// test last visit. we can assume that these tests have been reloaded in the past 24 hours
$data = array();
$this->assertTrue(ForumHolder::new_posts_available($fh->ID, $data, date('Y-m-d H:i:s', mktime(0, 0, 0, date('m'), date('d') - 1, date('Y')))));
// set the last post ID (test the first post - so there should be a post, last post (false))
$fixtureIDs = $this->allFixtureIDs('Post');
$lastPostID = end($fixtureIDs);
$this->assertTrue(ForumHolder::new_posts_available($fh->ID, $data, null, 1));
$this->assertFalse(ForumHolder::new_posts_available($fh->ID, $data, null, $lastPostID));
// limit to a specific forum
$forum = $this->objFromFixture("Forum", "general");
$this->assertTrue(ForumHolder::new_posts_available($fh->ID, $data, null, null, $forum->ID));
$this->assertFalse(ForumHolder::new_posts_available($fh->ID, $data, null, $lastPostID, $forum->ID));
// limit to a specific thread
$thread = $this->objFromFixture("ForumThread", "Thread1");
$this->assertTrue(ForumHolder::new_posts_available($fh->ID, $data, null, null, null, $thread->ID));
$this->assertFalse(ForumHolder::new_posts_available($fh->ID, $data, null, $lastPostID, null, $thread->ID));
}
