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phab/src/infrastructure/daemon/PhabricatorDaemon.php
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PhabricatorDaemon.php
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<?php
abstract class PhabricatorDaemon extends PhutilDaemon {
protected function willRun() {
parent::willRun();
$phabricator = phutil_get_library_root('phabricator');
$root = dirname($phabricator);
require_once $root.'/scripts/__init_script__.php';
}
protected function willSleep($duration) {
LiskDAO::closeInactiveConnections(60);
return;
}
public function getViewer() {
return PhabricatorUser::getOmnipotentUser();
}
/**
* Format a command so it executes as the daemon user, if a daemon user is
* defined. This wraps the provided command in `sudo -u ...`, roughly.
*
* @param PhutilCommandString Command to execute.
* @return PhutilCommandString `sudo` version of the command.
*/
public static function sudoCommandAsDaemonUser($command) {
$user = PhabricatorEnv::getEnvConfig('phd.user');
if (!$user) {
// No daemon user is set, so just run this as ourselves.
return $command;
}
// We may reach this method while already running as the daemon user: for
// example, active and passive synchronization of clustered repositories
// run the same commands through the same code, but as different users.
// By default, `sudo` won't let you sudo to yourself, so we can get into
// trouble if we're already running as the daemon user unless the host has
// been configured to let the daemon user run commands as itself.
// Since this is silly and more complicated than doing this check, don't
// use `sudo` if we're already running as the correct user.
if (function_exists('posix_getuid')) {
$uid = posix_getuid();
$info = posix_getpwuid($uid);
if ($info && $info['name'] == $user) {
return $command;
}
}
// Get the absolute path so we're safe against the caller wiping out
// PATH.
$sudo = Filesystem::resolveBinary('sudo');
if (!$sudo) {
throw new Exception(pht("Unable to find 'sudo'!"));
}
// Flags here are:
//
// -E: Preserve the environment.
// -n: Non-interactive. Exit with an error instead of prompting.
// -u: Which user to sudo to.
return csprintf('%s -E -n -u %s -- %C', $sudo, $user, $command);
}
}
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