/**
* Process trackback request.
*/
function _process()
{
// get ID
global $ID;
$ID = substr($_SERVER['PATH_INFO'], 1);
$sourceUri = $_REQUEST['url'];
if (is_null($this->tools) || !$this->tools->linkbackAllowed()) {
$this->_printTrackbackError('Trackbacks disabled.');
return;
}
// No POST request? Quit
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
$this->_printTrackbackError('Trackback was not received via HTTP POST.');
return;
}
// Given URL is not an url? Quit
if (!preg_match("#^([a-z0-9\\-\\.+]+?)://.*#i", $sourceUri)) {
$this->_printTrackbackError('Given trackback URL is not an URL.');
return;
}
// Source does not exist? Quit
$http = new DokuHTTPClient();
$page = $http->get($sourceUri);
if ($page === false) {
$this->_printTrackbackError('Linked page cannot be reached');
return;
}
if (!$this->tools->saveLinkback('trackback', strip_tags($_REQUEST['title']), $sourceUri, strip_tags($_REQUEST['excerpt']), $ID)) {
$this->_printTrackbackError('Trackback already received.');
return;
}
$this->_printTrackbackSuccess();
}
/**
* @param $sourceUri
* @param $targetUri
* @return IXR_Error
*/
function ping($sourceUri, $targetUri)
{
global $ID;
$ID = substr($_SERVER['PATH_INFO'], 1);
if (is_null($this->tools) || !$this->tools->linkbackAllowed()) {
return new IXR_Error(PINGBACK_ERROR_TARGETURI_CANNOT_BE_USED, '');
}
// Given URLs are no urls? Quit
if (!preg_match("#^([a-z0-9\\-\\.+]+?)://.*#i", $sourceUri)) {
return new IXR_Error(PINGBACK_ERROR_GENERIC, '');
}
if (!preg_match("#^([a-z0-9\\-\\.+]+?)://.*#i", $targetUri)) {
return new IXR_Error(PINGBACK_ERROR_GENERIC, '');
}
// Source URL does not exist? Quit
$http = new DokuHTTPClient();
$page = $http->get($sourceUri);
if ($page === false) {
return new IXR_Error(PINGBACK_ERROR_SOURCEURI_DOES_NOT_EXIST, '');
}
// Target URL does not match with request? Quit
if ($targetUri != wl($ID, '', true)) {
return new IXR_Error(PINGBACK_ERROR_GENERIC, '');
}
// Retrieve data from source
$linkback = $this->_getTrackbackData($sourceUri, $targetUri, $page);
// Source URL does not contain link to target? Quit
if (!$linkback) {
return new IXR_Error(PINGBACK_ERROR_SOURCEURI_DOES_NOT_CONTAIN_LINK, '');
}
if (!$this->tools->saveLinkback('pingback', $linkback['title'], $sourceUri, $linkback['excerpt'], $ID)) {
return new IXR_Error(PINGBACK_ERROR_PINGBACK_ALREADY_MADE, '');
}
}