PhabricatorSSHLog.php
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	<?php

	final class PhabricatorSSHLog extends Phobject {

	static $log;

	public static function getLog() {
	if (!self::$log) {
	$path = PhabricatorEnv::getEnvConfig('log.ssh.path');
	$format = PhabricatorEnv::getEnvConfig('log.ssh.format');
	$format = nonempty(
	$format,
	"[%D]\t%p\t%h\t%r\t%s\t%S\t%u\t%C\t%U\t%c\t%T\t%i\t%o");

	// NOTE: Path may be null. We still create the log, it just won't write
	// anywhere.

	$data = array(
	'D' => date('r'),
	'h' => php_uname('n'),
	'p' => getmypid(),
	'e' => time(),
	);

	$sudo_user = PhabricatorEnv::getEnvConfig('phd.user');
	if (strlen($sudo_user)) {
	$data['S'] = $sudo_user;
	}

	if (function_exists('posix_geteuid')) {
	$system_uid = posix_geteuid();
	$system_info = posix_getpwuid($system_uid);
	$data['s'] = idx($system_info, 'name');
	}

	$client = getenv('SSH_CLIENT');
	if (strlen($client)) {
	$remote_address = head(explode(' ', $client));
	$data['r'] = $remote_address;
	}

	$log = id(new PhutilDeferredLog($path, $format))
	->setFailQuietly(true)
	->setData($data);

	self::$log = $log;
	}

	return self::$log;
	}

	}