/**
* checkLastModified returns true if it has taken care of all
* output to the client that is necessary for this request.
* (that is, it has sent a cached version of the page)
*
* @return bool True if cached version send, false otherwise
*/
protected function tryFileCache()
{
static $called = false;
if ($called) {
wfDebug("Article::tryFileCache(): called twice!?\n");
return false;
}
$called = true;
if ($this->isFileCacheable()) {
$cache = new HTMLFileCache($this->getTitle(), 'view');
if ($cache->isCacheGood($this->mPage->getTouched())) {
wfDebug("Article::tryFileCache(): about to load file\n");
$cache->loadFromFileCache($this->getContext());
return true;
} else {
wfDebug("Article::tryFileCache(): starting buffer\n");
ob_start(array(&$cache, 'saveToFileCache'));
}
} else {
wfDebug("Article::tryFileCache(): not cacheable\n");
}
return false;
}
/**
* Print the history page for an article.
*/
function onView()
{
$out = $this->getOutput();
$request = $this->getRequest();
/**
* Allow client caching.
*/
if ($out->checkLastModified($this->page->getTouched())) {
return;
// Client cache fresh and headers sent, nothing more to do.
}
$this->preCacheMessages();
$config = $this->context->getConfig();
# Fill in the file cache if not set already
if (HTMLFileCache::useFileCache($this->getContext())) {
$cache = new HTMLFileCache($this->getTitle(), 'history');
if (!$cache->isCacheGood()) {
ob_start([&$cache, 'saveToFileCache']);
}
}
// Setup page variables.
$out->setFeedAppendQuery('action=history');
$out->addModules('mediawiki.action.history');
$out->addModuleStyles(['mediawiki.action.history.styles', 'mediawiki.special.changeslist']);
if ($config->get('UseMediaWikiUIEverywhere')) {
$out = $this->getOutput();
$out->addModuleStyles(['mediawiki.ui.input', 'mediawiki.ui.checkbox']);
}
// Handle atom/RSS feeds.
$feedType = $request->getVal('feed');
if ($feedType) {
$this->feed($feedType);
return;
}
$this->addHelpLink('//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Page_history', true);
// Fail nicely if article doesn't exist.
if (!$this->page->exists()) {
global $wgSend404Code;
if ($wgSend404Code) {
$out->setStatusCode(404);
}
$out->addWikiMsg('nohistory');
# show deletion/move log if there is an entry
LogEventsList::showLogExtract($out, ['delete', 'move'], $this->getTitle(), '', ['lim' => 10, 'conds' => ["log_action != 'revision'"], 'showIfEmpty' => false, 'msgKey' => ['moveddeleted-notice']]);
return;
}
/**
* Add date selector to quickly get to a certain time
*/
$year = $request->getInt('year');
$month = $request->getInt('month');
$tagFilter = $request->getVal('tagfilter');
$tagSelector = ChangeTags::buildTagFilterSelector($tagFilter);
/**
* Option to show only revisions that have been (partially) hidden via RevisionDelete
*/
if ($request->getBool('deleted')) {
$conds = ['rev_deleted != 0'];
} else {
$conds = [];
}
if ($this->getUser()->isAllowed('deletedhistory')) {
$checkDeleted = Xml::checkLabel($this->msg('history-show-deleted')->text(), 'deleted', 'mw-show-deleted-only', $request->getBool('deleted')) . "\n";
} else {
$checkDeleted = '';
}
// Add the general form
$action = htmlspecialchars(wfScript());
$out->addHTML("<form action=\"{$action}\" method=\"get\" id=\"mw-history-searchform\">" . Xml::fieldset($this->msg('history-fieldset-title')->text(), false, ['id' => 'mw-history-search']) . Html::hidden('title', $this->getTitle()->getPrefixedDBkey()) . "\n" . Html::hidden('action', 'history') . "\n" . Xml::dateMenu($year == null ? MWTimestamp::getLocalInstance()->format('Y') : $year, $month) . ' ' . ($tagSelector ? implode(' ', $tagSelector) . ' ' : '') . $checkDeleted . Html::submitButton($this->msg('historyaction-submit')->text(), [], ['mw-ui-progressive']) . "\n" . '</fieldset></form>');
Hooks::run('PageHistoryBeforeList', [&$this->page, $this->getContext()]);
// Create and output the list.
$pager = new HistoryPager($this, $year, $month, $tagFilter, $conds);
$out->addHTML($pager->getNavigationBar() . $pager->getBody() . $pager->getNavigationBar());
$out->preventClickjacking($pager->getPreventClickjacking());
}
private function main()
{
global $wgTitle;
wfProfileIn(__METHOD__);
$request = $this->context->getRequest();
// Send Ajax requests to the Ajax dispatcher.
if ($this->config->get('UseAjax') && $request->getVal('action', 'view') == 'ajax') {
// Set a dummy title, because $wgTitle == null might break things
$title = Title::makeTitle(NS_MAIN, 'AJAX');
$this->context->setTitle($title);
$wgTitle = $title;
$dispatcher = new AjaxDispatcher($this->config);
$dispatcher->performAction($this->context->getUser());
wfProfileOut(__METHOD__);
return;
}
// Get title from request parameters,
// is set on the fly by parseTitle the first time.
$title = $this->getTitle();
$action = $this->getAction();
$wgTitle = $title;
// If the user has forceHTTPS set to true, or if the user
// is in a group requiring HTTPS, or if they have the HTTPS
// preference set, redirect them to HTTPS.
// Note: Do this after $wgTitle is setup, otherwise the hooks run from
// isLoggedIn() will do all sorts of weird stuff.
if ($request->getProtocol() == 'http' && ($request->getCookie('forceHTTPS', '') || $request->getCookie('forceHTTPS') || $this->context->getUser()->isLoggedIn() && $this->context->getUser()->requiresHTTPS())) {
$oldUrl = $request->getFullRequestURL();
$redirUrl = preg_replace('#^http://#', 'https://', $oldUrl);
// ATTENTION: This hook is likely to be removed soon due to overall design of the system.
if (wfRunHooks('BeforeHttpsRedirect', array($this->context, &$redirUrl))) {
if ($request->wasPosted()) {
// This is weird and we'd hope it almost never happens. This
// means that a POST came in via HTTP and policy requires us
// redirecting to HTTPS. It's likely such a request is going
// to fail due to post data being lost, but let's try anyway
// and just log the instance.
//
// @todo FIXME: See if we could issue a 307 or 308 here, need
// to see how clients (automated & browser) behave when we do
wfDebugLog('RedirectedPosts', "Redirected from HTTP to HTTPS: {$oldUrl}");
}
// Setup dummy Title, otherwise OutputPage::redirect will fail
$title = Title::newFromText(NS_MAIN, 'REDIR');
$this->context->setTitle($title);
$output = $this->context->getOutput();
// Since we only do this redir to change proto, always send a vary header
$output->addVaryHeader('X-Forwarded-Proto');
$output->redirect($redirUrl);
$output->output();
wfProfileOut(__METHOD__);
return;
}
}
if ($this->config->get('UseFileCache') && $title->getNamespace() >= 0) {
wfProfileIn('main-try-filecache');
if (HTMLFileCache::useFileCache($this->context)) {
// Try low-level file cache hit
$cache = new HTMLFileCache($title, $action);
if ($cache->isCacheGood()) {
// Check incoming headers to see if client has this cached
$timestamp = $cache->cacheTimestamp();
if (!$this->context->getOutput()->checkLastModified($timestamp)) {
$cache->loadFromFileCache($this->context);
}
// Do any stats increment/watchlist stuff
// Assume we're viewing the latest revision (this should always be the case with file cache)
$this->context->getWikiPage()->doViewUpdates($this->context->getUser());
// Tell OutputPage that output is taken care of
$this->context->getOutput()->disable();
wfProfileOut('main-try-filecache');
wfProfileOut(__METHOD__);
return;
}
}
wfProfileOut('main-try-filecache');
}
// Actually do the work of the request and build up any output
$this->performRequest();
// Either all DB and deferred updates should happen or none.
// The later should not be cancelled due to client disconnect.
ignore_user_abort(true);
// Now commit any transactions, so that unreported errors after
// output() don't roll back the whole DB transaction
wfGetLBFactory()->commitMasterChanges();
// Output everything!
$this->context->getOutput()->output();
wfProfileOut(__METHOD__);
}
private function main()
{
global $wgTitle;
$output = $this->context->getOutput();
$request = $this->context->getRequest();
// Send Ajax requests to the Ajax dispatcher.
if ($this->config->get('UseAjax') && $request->getVal('action') === 'ajax') {
// Set a dummy title, because $wgTitle == null might break things
$title = Title::makeTitle(NS_SPECIAL, 'Badtitle/performing an AJAX call in ' . __METHOD__);
$this->context->setTitle($title);
$wgTitle = $title;
$dispatcher = new AjaxDispatcher($this->config);
$dispatcher->performAction($this->context->getUser());
return;
}
// Get title from request parameters,
// is set on the fly by parseTitle the first time.
$title = $this->getTitle();
$action = $this->getAction();
$wgTitle = $title;
// Set DB query expectations for this HTTP request
$trxLimits = $this->config->get('TrxProfilerLimits');
$trxProfiler = Profiler::instance()->getTransactionProfiler();
$trxProfiler->setLogger(LoggerFactory::getInstance('DBPerformance'));
if ($request->hasSafeMethod()) {
$trxProfiler->setExpectations($trxLimits['GET'], __METHOD__);
} else {
$trxProfiler->setExpectations($trxLimits['POST'], __METHOD__);
}
// If the user has forceHTTPS set to true, or if the user
// is in a group requiring HTTPS, or if they have the HTTPS
// preference set, redirect them to HTTPS.
// Note: Do this after $wgTitle is setup, otherwise the hooks run from
// isLoggedIn() will do all sorts of weird stuff.
if ($request->getProtocol() == 'http' && preg_match('#^https://#', wfExpandUrl($request->getRequestURL(), PROTO_HTTPS)) && ($request->getSession()->shouldForceHTTPS() || $request->getCookie('forceHTTPS', '') || $request->getCookie('forceHTTPS') || $this->context->getUser()->isLoggedIn() && $this->context->getUser()->requiresHTTPS())) {
$oldUrl = $request->getFullRequestURL();
$redirUrl = preg_replace('#^http://#', 'https://', $oldUrl);
// ATTENTION: This hook is likely to be removed soon due to overall design of the system.
if (Hooks::run('BeforeHttpsRedirect', [$this->context, &$redirUrl])) {
if ($request->wasPosted()) {
// This is weird and we'd hope it almost never happens. This
// means that a POST came in via HTTP and policy requires us
// redirecting to HTTPS. It's likely such a request is going
// to fail due to post data being lost, but let's try anyway
// and just log the instance.
// @todo FIXME: See if we could issue a 307 or 308 here, need
// to see how clients (automated & browser) behave when we do
wfDebugLog('RedirectedPosts', "Redirected from HTTP to HTTPS: {$oldUrl}");
}
// Setup dummy Title, otherwise OutputPage::redirect will fail
$title = Title::newFromText('REDIR', NS_MAIN);
$this->context->setTitle($title);
// Since we only do this redir to change proto, always send a vary header
$output->addVaryHeader('X-Forwarded-Proto');
$output->redirect($redirUrl);
$output->output();
return;
}
}
if ($title->canExist() && HTMLFileCache::useFileCache($this->context)) {
// Try low-level file cache hit
$cache = new HTMLFileCache($title, $action);
if ($cache->isCacheGood()) {
// Check incoming headers to see if client has this cached
$timestamp = $cache->cacheTimestamp();
if (!$output->checkLastModified($timestamp)) {
$cache->loadFromFileCache($this->context);
}
// Do any stats increment/watchlist stuff, assuming user is viewing the
// latest revision (which should always be the case for file cache)
$this->context->getWikiPage()->doViewUpdates($this->context->getUser());
// Tell OutputPage that output is taken care of
$output->disable();
return;
}
}
// Actually do the work of the request and build up any output
$this->performRequest();
// GUI-ify and stash the page output in MediaWiki::doPreOutputCommit() while
// ChronologyProtector synchronizes DB positions or slaves accross all datacenters.
$buffer = null;
$outputWork = function () use($output, &$buffer) {
if ($buffer === null) {
$buffer = $output->output(true);
}
return $buffer;
};
// Now commit any transactions, so that unreported errors after
// output() don't roll back the whole DB transaction and so that
// we avoid having both success and error text in the response
$this->doPreOutputCommit($outputWork);
// Now send the actual output
print $outputWork();
}
public function execute()
{
global $wgRequestTime;
if (!$this->enabled) {
$this->error("Nothing to do -- \$wgUseFileCache is disabled.", true);
}
$start = $this->getOption('start', "0");
if (!ctype_digit($start)) {
$this->error("Invalid value for start parameter.", true);
}
$start = intval($start);
$end = $this->getOption('end', "0");
if (!ctype_digit($end)) {
$this->error("Invalid value for end parameter.", true);
}
$end = intval($end);
$this->output("Building content page file cache from page {$start}!\n");
$dbr = $this->getDB(DB_REPLICA);
$overwrite = $this->getOption('overwrite', false);
$start = $start > 0 ? $start : $dbr->selectField('page', 'MIN(page_id)', false, __METHOD__);
$end = $end > 0 ? $end : $dbr->selectField('page', 'MAX(page_id)', false, __METHOD__);
if (!$start) {
$this->error("Nothing to do.", true);
}
$_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip';
// hack, no real client
# Do remaining chunk
$end += $this->mBatchSize - 1;
$blockStart = $start;
$blockEnd = $start + $this->mBatchSize - 1;
$dbw = $this->getDB(DB_MASTER);
// Go through each page and save the output
while ($blockEnd <= $end) {
// Get the pages
$res = $dbr->select('page', ['page_namespace', 'page_title', 'page_id'], ['page_namespace' => MWNamespace::getContentNamespaces(), "page_id BETWEEN {$blockStart} AND {$blockEnd}"], __METHOD__, ['ORDER BY' => 'page_id ASC', 'USE INDEX' => 'PRIMARY']);
$this->beginTransaction($dbw, __METHOD__);
// for any changes
foreach ($res as $row) {
$rebuilt = false;
$title = Title::makeTitleSafe($row->page_namespace, $row->page_title);
if (null == $title) {
$this->output("Page {$row->page_id} has bad title\n");
continue;
// broken title?
}
$context = new RequestContext();
$context->setTitle($title);
$article = Article::newFromTitle($title, $context);
$context->setWikiPage($article->getPage());
// If the article is cacheable, then load it
if ($article->isFileCacheable(HTMLFileCache::MODE_REBUILD)) {
$viewCache = new HTMLFileCache($title, 'view');
$historyCache = new HTMLFileCache($title, 'history');
if ($viewCache->isCacheGood() && $historyCache->isCacheGood()) {
if ($overwrite) {
$rebuilt = true;
} else {
$this->output("Page '{$title}' (id {$row->page_id}) already cached\n");
continue;
// done already!
}
}
MediaWiki\suppressWarnings();
// header notices
// Cache ?action=view
$wgRequestTime = microtime(true);
# bug 22852
ob_start();
$article->view();
$context->getOutput()->output();
$context->getOutput()->clearHTML();
$viewHtml = ob_get_clean();
$viewCache->saveToFileCache($viewHtml);
// Cache ?action=history
$wgRequestTime = microtime(true);
# bug 22852
ob_start();
Action::factory('history', $article, $context)->show();
$context->getOutput()->output();
$context->getOutput()->clearHTML();
$historyHtml = ob_get_clean();
$historyCache->saveToFileCache($historyHtml);
MediaWiki\restoreWarnings();
if ($rebuilt) {
$this->output("Re-cached page '{$title}' (id {$row->page_id})...");
} else {
$this->output("Cached page '{$title}' (id {$row->page_id})...");
}
$this->output("[view: " . strlen($viewHtml) . " bytes; " . "history: " . strlen($historyHtml) . " bytes]\n");
} else {
$this->output("Page '{$title}' (id {$row->page_id}) not cacheable\n");
}
}
$this->commitTransaction($dbw, __METHOD__);
// commit any changes (just for sanity)
$blockStart += $this->mBatchSize;
$blockEnd += $this->mBatchSize;
}
$this->output("Done!\n");
}
