/**
* Ajax call. This is called by efCategoryTreeAjaxWrapper, which is used to
* load CategoryTreeFunctions.php on demand.
*/
function ajax($category, $mode)
{
global $wgDBname;
$title = self::makeTitle($category);
if (!$title) {
return false;
}
#TODO: error message?
$this->mIsAjaxRequest = true;
# Retrieve page_touched for the category
$dbkey = $title->getDBkey();
$dbr =& wfGetDB(DB_SLAVE);
$touched = $dbr->selectField('page', 'page_touched', array('page_namespace' => NS_CATEGORY, 'page_title' => $dbkey), __METHOD__);
$mckey = "{$wgDBname}:categorytree({$mode}):{$dbkey}";
//FIXME: would need to add depth parameter.
$response = new AjaxResponse();
if ($response->checkLastModified($touched)) {
return $response;
}
if ($response->loadFromMemcached($mckey, $touched)) {
return $response;
}
$html = $this->renderChildren($title, $mode);
//FIXME: would need to pass depth parameter.
if ($html == '') {
$html = ' ';
}
#HACK: Safari doesn't like empty responses.
#see Bug 7219 and http://bugzilla.opendarwin.org/show_bug.cgi?id=10716
$response->addText($html);
$response->storeInMemcached($mckey, 86400);
return $response;
}
/**
* Entry point for Ajax, registered in $wgAjaxExportList.
* This loads CategoryTreeFunctions.php and calls CategoryTree::ajax()
*/
function efAjaxTest($text, $usestring, $httpcache, $lastmod, $error)
{
$text = htmlspecialchars($text) . "(" . wfTimestampNow() . ")";
if ($usestring) {
return $text;
} else {
$response = new AjaxResponse($text);
if ($error) {
throw new Exception($text);
}
if ($httpcache) {
$response->setCacheDuration(24 * 60 * 60);
}
# cache for a day
if ($lastmod) {
$response->checkLastModified('19700101000001');
# never modified
}
return $response;
}
}
/**
* Ajax call. This is called by efCategoryTreeAjaxWrapper, which is used to
* load CategoryTreeFunctions.php on demand.
* @param $category
* @param $depth int
* @return AjaxResponse|bool
*/
function ajax($category, $depth = 1)
{
global $wgLang, $wgContLang, $wgRenderHashAppend;
$title = self::makeTitle($category);
if (!$title) {
return false;
# TODO: error message?
}
# Retrieve page_touched for the category
$dbkey = $title->getDBkey();
$dbr = wfGetDB(DB_SLAVE);
$touched = $dbr->selectField('page', 'page_touched', array('page_namespace' => NS_CATEGORY, 'page_title' => $dbkey), __METHOD__);
$mckey = wfMemcKey("categorytree(" . $this->getOptionsAsCacheKey($depth) . ")", $dbkey, $wgLang->getCode(), $wgContLang->getExtraHashOptions(), $wgRenderHashAppend);
$response = new AjaxResponse();
if ($response->checkLastModified($touched)) {
return $response;
}
if ($response->loadFromMemcached($mckey, $touched)) {
return $response;
}
$html = $this->renderChildren($title, $depth);
if ($html == '') {
# HACK: Safari doesn't like empty responses.
# see Bug 7219 and http://bugzilla.opendarwin.org/show_bug.cgi?id=10716
$html = ' ';
}
$response->addText($html);
$response->storeInMemcached($mckey, 86400);
return $response;
}
/**
Returns colored markup.
@return colored markup.
*/
static function ajax_getColoredText($page_title_raw, $page_id_raw = NULL, $rev_id_raw = NULL)
{
global $wgParser, $wgWikiTrustContentServerURL, $wgWikiTrustApiURL, $wgUser;
global $wgMemc;
$response = new AjaxResponse("");
$request_headers = apache_request_headers();
// Try to use gzip for the content, if possible.
// Ian - This isn't working with redherring, for some reason.
if (strstr($request_headers["Accept-Encoding"], "gzip")) {
// $response->setContentType("gzip");
}
// Can set this to use client side caching, but this can also cause
// problems.
// Mark that the content can be cached
// $response->setCacheDuration(self::TRUST_CACHE_VALID);
if (!$page_id_raw || !$rev_id_raw) {
$data = array('action' => 'query', 'prop' => 'revisions', 'titles' => $page_title_raw, 'rvlimit' => '1', 'rvprop' => 'ids', 'format' => 'json');
$page_info_raw = file_get_contents($wgWikiTrustApiURL . http_build_query($data));
$page_json = json_decode($page_info_raw, true);
$pages_arr = array_keys($page_json["query"]["pages"]);
// Now, parse out only what we need
if (!$page_id_raw) {
$page_id_raw = $pages_arr[0];
}
if (!$rev_id_raw) {
$rev_id_raw = $page_json["query"]["pages"][$page_id_raw]["revisions"][0]["revid"];
}
}
$dbr =& wfGetDB(DB_SLAVE);
$page_id = $dbr->strencode($page_id_raw, $dbr);
$rev_id = $dbr->strencode($rev_id_raw, $dbr);
$page_title = $dbr->strencode($page_title_raw, $dbr);
// Check the If-Modified-Since header.
// If the timestamp of the requested revision is earlier than the IMS
// header, return 304 and do nothing further.
$rev_ts = '19700101000000';
$res = $dbr->select(self::util_getDbTable('wikitrust_colored_markup'), array('revision_createdon'), array('revision_id' => $rev_id), array());
if ($res && $dbr->numRows($res) > 0) {
$row = $dbr->fetchRow($res);
$rev_ts = $row['revision_createdon'];
if (!$rev_ts) {
$rev_ts = '19700101000000';
}
}
$dbr->freeResult($res);
if ($response->checkLastModified($rev_ts)) {
return $response;
}
// See if we have a cached version of the colored text, or if
// we need to generate new text.
$memcKey = wfMemcKey('revisiontext', 'revid', $rev_id);
$cached_text = $wgMemc->get($memcKey);
if ($cached_text) {
$response->addText($cached_text);
return $response;
}
// Since we are here, we need to get the colored HTML the hard way.
$ctx = stream_context_create(array('http' => array('timeout' => self::TRUST_TIMEOUT)));
// TODO: Should we do doing this via HTTPS? Or POST?
// TODO: in RemoteMode, shouldn't we use local database?
$colored_raw = file_get_contents($wgWikiTrustContentServerURL . "rev=" . urlencode($rev_id) . "&page=" . urlencode($page_id) . "&page_title=" . urlencode($page_title) . "&time=" . urlencode(wfTimestampNow()) . "&user=0", 0, $ctx);
if ($colored_raw && $colored_raw != self::NOT_FOUND_TEXT_TOKEN) {
// Inflate. Pick off the first 10 bytes for python-php conversion.
$colored_raw = gzinflate(substr($colored_raw, 10));
// Pick off the median value first.
$colored_data = explode(",", $colored_raw, 2);
$colored_text = $colored_data[1];
if (preg_match("/^[+-]?(([0-9]+)|([0-9]*\\.[0-9]+|[0-9]+\\.[0-9]*)|\n\t\t\t (([0-9]+|([0-9]*\\.[0-9]+|[0-9]+\\.[0-9]*))[eE][+-]?[0-9]+))\$/", $colored_data[0])) {
self::$median = $colored_data[0];
if ($colored_data[0] == 0) {
self::$median = self::TRUST_DEFAULT_MEDIAN;
}
}
// First, make sure that there are not any instances of our tokens in the colored_text
$colored_text = str_replace(self::TRUST_OPEN_TOKEN, "", $colored_text);
$colored_text = str_replace(self::TRUST_CLOSE_TOKEN, "", $colored_text);
$colored_text = preg_replace("/'/", "'", $colored_text, -1);
$colored_text = preg_replace("/&/", "&", $colored_text, -1);
$colored_text = preg_replace("/</", self::TRUST_OPEN_TOKEN, $colored_text, -1);
$colored_text = preg_replace("/>/", self::TRUST_CLOSE_TOKEN, $colored_text, -1);
$title = Title::newFromText($page_title);
$options = ParserOptions::newFromUser($wgUser);
$parsed = $wgParser->parse($colored_text, $title, $options);
$text = $parsed->getText();
$count = 0;
// Update the trust tags
$text = preg_replace_callback("/\\{\\{#t:(\\d+),(\\d+),(.*?)\\}\\}/", "WikiTrust::color_handleParserRe", $text, -1, $count);
// Update open, close, images, and links.
$text = preg_replace('/' . self::TRUST_OPEN_TOKEN . '/', "<", $text, -1, $count);
// Regex broken for some pages.
// Removing for now.
/**
$text = preg_replace('/<a href="(.*?)(File):(.*?)" (.*?)>/'
, self::TRUST_OPEN_TOKEN, $text, -1, $count);
$text = preg_replace('/<a href="(.*?)(Image):(.*?)" (.*?)>/'
, self::TRUST_OPEN_TOKEN, $text, -1, $count); */
$text = preg_replace('/<a href="(.*?)title=(.*?)&action=edit&redlink=1" class="new" title="(.*?) \\(not yet written\\)">/', '<a href="/wiki/$2" title="$3">', $text, -1, $count);
/* $text = preg_replace_callback(
'/'.self::TRUST_OPEN_TOKEN
.'(Image|File):(.*?)<\/a>/'
,"WikiTrust::color_getImageInfo"
,$text, -1, $count);
*/
$text = preg_replace('/' . self::TRUST_CLOSE_TOKEN . '/', ">", $text, -1, $count);
$text = preg_replace('/<\\/p>/', "</span></p>", $text, -1, $count);
$text = preg_replace('/<p><\\/span>/', "<p>", $text, -1, $count);
$text = preg_replace('/<li><\\/span>/', "<li>", $text, -1, $count);
// Save the finished text in the cache.
$wgMemc->set($memcKey, $text, self::TRUST_CACHE_VALID);
// And finally return the colored HTML.
$response->addText($text);
// And mark that we have the colored version, for cache control.
$dbw = wfGetDB(DB_MASTER);
$dbw->begin();
$dbw->insert('wikitrust_colored_markup', array('revision_id' => $rev_id, 'revision_text' => "memcached", 'revision_createdon' => wfTimestampNow()), 'Database::insert', array('IGNORE'));
$dbw->commit();
} else {
// text not found.
$response = new AjaxResponse(self::NOT_FOUND_TEXT_TOKEN);
}
return $response;
}
/**
* @author Maciej Błaszkowski <marooned at wikia-inc.com>
*/
function wfAnswersGetEditPointsAjax()
{
global $wgRequest, $wgSquidMaxage;
$userId = intval($wgRequest->getVal('userId'));
$points = AttributionCache::getInstance()->getUserEditPoints($userId);
$timestamp = AttributionCache::getInstance()->getUserLastModifiedFromCache($userId);
$timestamp = !empty($timestamp) ? $timestamp : wfTimestampNow();
$data = array('points' => $points, 'timestamp' => wfTimestampNow());
$json = json_encode($data);
$response = new AjaxResponse($json);
$response->setContentType('application/json; charset=utf-8');
$response->checkLastModified(strtotime($timestamp));
$response->setCacheDuration($wgSquidMaxage);
return $response;
}
