Differential D10465 Diff 25192 support/PhabricatorStartup.php

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support/PhabricatorStartup.php

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* @task hook Startup Hooks		* @task hook Startup Hooks
* @task apocalypse In Case Of Apocalypse		* @task apocalypse In Case Of Apocalypse
* @task validation Validation		* @task validation Validation
* @task ratelimit Rate Limiting		* @task ratelimit Rate Limiting
*/		*/
final class PhabricatorStartup {		final class PhabricatorStartup {

private static $startTime;		private static $startTime;
		private static $debugTimeLimit;
private static $globals = array();		private static $globals = array();
private static $capturingOutput;		private static $capturingOutput;
private static $rawInput;		private static $rawInput;
private static $oldMemoryLimit;		private static $oldMemoryLimit;

// TODO: For now, disable rate limiting entirely by default. We need to		// TODO: For now, disable rate limiting entirely by default. We need to
// iterate on it a bit for Conduit, some of the specific score levels, and		// iterate on it a bit for Conduit, some of the specific score levels, and
// to deal with NAT'd offices.		// to deal with NAT'd offices.
▲ Show 20 Lines • Show All 172 Lines • ▼ Show 20 Lines	public static function endOutputCapture() {
if (!self::$capturingOutput) {		if (!self::$capturingOutput) {
return null;		return null;
}		}
self::$capturingOutput = false;		self::$capturingOutput = false;
return ob_get_clean();		return ob_get_clean();
}		}


		/* -( Debug Time Limit )--------------------------------------------------- */


		/**
		* Set a time limit (in seconds) for the current script. After time expires,
		* the script fatals.
		*
		* This works like `max_execution_time`, but prints out a useful stack trace
		* when the time limit expires. This is primarily intended to make it easier
		* to debug pages which hang by allowing extraction of a stack trace: set a
		* short debug limit, then use the trace to figure out what's happening.
		*
		* The limit is implemented with a tick function, so enabling it implies
		* some accounting overhead.
		*
		* @param int Time limit in seconds.
		* @return void
		*/
		public static function setDebugTimeLimit($limit) {
		self::$debugTimeLimit = $limit;

		static $initialized;
		if (!$initialized) {
		declare(ticks=1);
		register_tick_function(array('PhabricatorStartup', 'onDebugTick'));
		}
		}


		/**
		* Callback tick function used by @{method:setDebugTimeLimit}.
		*
		* Fatals with a useful stack trace after the time limit expires.
		*
		* @return void
		*/
		public static function onDebugTick() {
		$limit = self::$debugTimeLimit;
		if (!$limit) {
		return;
		}

		$elapsed = (microtime(true) - self::getStartTime());
		if ($elapsed > $limit) {
		$frames = array();
		foreach (debug_backtrace() as $frame) {
		$file = isset($frame['file']) ? $frame['file'] : '-';
		$file = basename($file);

		$line = isset($frame['line']) ? $frame['line'] : '-';
		$class = isset($frame['class']) ? $frame['class'].'->' : null;
		$func = isset($frame['function']) ? $frame['function'].'()' : '?';

		$frames[] = "{$file}:{$line} {$class}{$func}";
		}

		self::didFatal(
		"Request aborted by debug time limit after {$limit} seconds.\n\n".
		"STACK TRACE\n".
		implode("\n", $frames));
		}
		}


/* -( In Case of Apocalypse )---------------------------------------------- */		/* -( In Case of Apocalypse )---------------------------------------------- */


/**		/**
* Fatal the request completely in response to an exception, sending a plain		* Fatal the request completely in response to an exception, sending a plain
* text message to the client. Calls @{method:didFatal} internally.		* text message to the client. Calls @{method:didFatal} internally.
*		*
* @param string Brief description of the exception context, like		* @param string Brief description of the exception context, like
▲ Show 20 Lines • Show All 73 Lines • ▼ Show 20 Lines	/* -( Validation )--------------------------------------------------------- */
* @task validation		* @task validation
*/		*/
private static function setupPHP() {		private static function setupPHP() {
error_reporting(E_ALL \| E_STRICT);		error_reporting(E_ALL \| E_STRICT);
self::$oldMemoryLimit = ini_get('memory_limit');		self::$oldMemoryLimit = ini_get('memory_limit');
ini_set('memory_limit', -1);		ini_set('memory_limit', -1);

// If we have libxml, disable the incredibly dangerous entity loader.		// If we have libxml, disable the incredibly dangerous entity loader.
if (function_exists('libxml_disable_entity_loader')) {		if (function_exists('libxml_disable_entity_loader')) {
		joshuaspenceUnsubmitted Not Done Inline Actions Great success! joshuaspence: Great success!
		epriestleyAuthorUnsubmitted Not Done Inline Actions epriestley: awwyiss
libxml_disable_entity_loader(true);		libxml_disable_entity_loader(true);
}		}
}		}


/**		/**
* @task validation		* @task validation
*/		*/
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