Differential D19688 Diff 47062 scripts/init/init-script.php

Changeset View

Standalone View

scripts/init/init-script.php

This file was added.

				<?php

				function __arcanist_init_script__() {
				// Adjust the runtime language configuration to be reasonable and inline with
				// expectations. We do this first, then load libraries.

				// There may be some kind of auto-prepend script configured which starts an
				// output buffer. Discard any such output buffers so messages can be sent to
				// stdout (if a user wants to capture output from a script, there are a large
				// number of ways they can accomplish it legitimately; historically, we ran
				// into this on only one install which had some bizarre configuration, but it
				// was difficult to diagnose because the symptom is "no messages of any
				// kind").
				while (ob_get_level() > 0) {
				ob_end_clean();
				}

				error_reporting(E_ALL \| E_STRICT);

				$config_map = array(
				// Always display script errors. Without this, they may not appear, which is
				// unhelpful when users encounter a problem. On the web this is a security
				// concern because you don't want to expose errors to clients, but in a
				// script context we always want to show errors.
				'display_errors' => true,

				// Send script error messages to the server's `error_log` setting.
				'log_errors' => true,

				// Set the error log to the default, so errors go to stderr. Without this
				// errors may end up in some log, and users may not know where the log is
				// or check it.
				'error_log' => null,

				// XDebug raises a fatal error if the call stack gets too deep, but the
				// default setting is 100, which we may exceed legitimately with module
				// includes (and in other cases, like recursive filesystem operations
				// applied to 100+ levels of directory nesting). Stop it from triggering:
				// we explicitly limit recursive algorithms which should be limited.
				//
				// After Feb 2014, XDebug interprets a value of 0 to mean "do not allow any
				// function calls". Previously, 0 effectively disabled this check. For
				// context, see T5027.
				'xdebug.max_nesting_level' => PHP_INT_MAX,

				// Don't limit memory, doing so just generally just prevents us from
				// processing large inputs without many tangible benefits.
				'memory_limit' => -1,
				);

				foreach ($config_map as $config_key => $config_value) {
				ini_set($config_key, $config_value);
				}

				if (!ini_get('date.timezone')) {
				// If the timezone isn't set, PHP issues a warning whenever you try to parse
				// a date (like those from Git or Mercurial logs), even if the date contains
				// timezone information (like "PST" or "-0700") which makes the
				// environmental timezone setting is completely irrelevant. We never rely on
				// the system timezone setting in any capacity, so prevent PHP from flipping
				// out by setting it to a safe default (UTC) if it isn't set to some other
				// value.
				date_default_timezone_set('UTC');
				}

				// Adjust `include_path`.
				ini_set('include_path', implode(PATH_SEPARATOR, array(
				dirname(dirname(__FILE__)).'/externals/includes',
				ini_get('include_path'),
				)));

				// Disable the insanely dangerous XML entity loader by default.
				if (function_exists('libxml_disable_entity_loader')) {
				libxml_disable_entity_loader(true);
				}

				// Now, load the library.

				$root = dirname(dirname(dirname(__FILE__)));
				require_once $root.'/src/__phutil_library_init__.php';

				PhutilErrorHandler::initialize();

				// If "variables_order" excludes "E", silently repair it so that $_ENV has
				// the values we expect.
				PhutilExecutionEnvironment::repairMissingVariablesOrder();

				$router = PhutilSignalRouter::initialize();

				$handler = new PhutilBacktraceSignalHandler();
				$router->installHandler('phutil.backtrace', $handler);

				$handler = new PhutilConsoleMetricsSignalHandler();
				$router->installHandler('phutil.winch', $handler);
				}

				__arcanist_init_script__();
				No newline at end of file