diff options
Diffstat (limited to 'lib/daemon.php')
| -rw-r--r-- | lib/daemon.php | 239 |
1 files changed, 125 insertions, 114 deletions
diff --git a/lib/daemon.php b/lib/daemon.php index 359a4343b..9c1ae50a0 100644 --- a/lib/daemon.php +++ b/lib/daemon.php @@ -1,5 +1,5 @@ <?php -/* +/** * Laconica - a distributed open-source microblogging tool * Copyright (C) 2008, Controlez-Vous, Inc. * @@ -17,117 +17,128 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -if (!defined('LACONICA')) { exit(1); } - -class Daemon { - - function name() { - return NULL; - } - - function background() { - $pid = pcntl_fork(); - if ($pid < 0) { # error - common_log(LOG_ERR, "Could not fork."); - return false; - } else if ($pid > 0) { # parent - common_log(LOG_INFO, "Successfully forked."); - exit(0); - } else { # child - return true; - } - } - - function alreadyRunning() { - - $pidfilename = $this->pidFilename(); - - if (!$pidfilename) { - return false; - } - - if (!file_exists($pidfilename)) { - return false; - } - $contents = file_get_contents($pidfilename); - if (posix_kill(trim($contents),0)) { - return true; - } else { - return false; - } - } - - function writePidFile() { - $pidfilename = $this->pidFilename(); - - if (!$pidfilename) { - return false; - } - - return file_put_contents($pidfilename, posix_getpid() . "\n"); - } - - function clearPidFile() { - $pidfilename = $this->pidFilename(); - if (!$pidfilename) { - return false; - } - return unlink($pidfilename); - } - - function pidFilename() { - $piddir = common_config('daemon', 'piddir'); - if (!$piddir) { - return NULL; - } - $name = $this->name(); - if (!$name) { - return NULL; - } - return $piddir . '/' . $name . '.pid'; - } - - function changeUser() { - - $username = common_config('daemon', 'user'); - - if ($username) { - $user_info = posix_getpwnam($username); - if (!$user_info) { - common_log(LOG_WARNING, 'Ignoring unknown user for daemon: ' . $username); - } else { - common_log(LOG_INFO, "Setting user to " . $username); - posix_setuid($user_info['uid']); - } - } - - $groupname = common_config('daemon', 'group'); - - if ($groupname) { - $group_info = posix_getgrnam($groupname); - if (!$group_info) { - common_log(LOG_WARNING, 'Ignoring unknown group for daemon: ' . $groupname); - } else { - common_log(LOG_INFO, "Setting group to " . $groupname); - posix_setgid($group_info['gid']); - } - } - } - - function runOnce() { - if ($this->alreadyRunning()) { - common_log(LOG_INFO, $this->name() . ' already running. Exiting.'); - exit(0); - } - if ($this->background()) { - $this->writePidFile(); - $this->changeUser(); - $this->run(); - $this->clearPidFile(); - } - } - - function run() { - return true; - } +if (!defined('LACONICA')) { + exit(1); +} + +class Daemon +{ + function name() + { + return null; + } + + function background() + { + $pid = pcntl_fork(); + if ($pid < 0) { // error + common_log(LOG_ERR, "Could not fork."); + return false; + } else if ($pid > 0) { // parent + common_log(LOG_INFO, "Successfully forked."); + exit(0); + } else { // child + return true; + } + } + + function alreadyRunning() + { + $pidfilename = $this->pidFilename(); + + if (!$pidfilename) { + return false; + } + + if (!file_exists($pidfilename)) { + return false; + } + $contents = file_get_contents($pidfilename); + if (posix_kill(trim($contents), 0)) { + return true; + } else { + return false; + } + } + + function writePidFile() + { + $pidfilename = $this->pidFilename(); + + if (!$pidfilename) { + return false; + } + + return file_put_contents($pidfilename, posix_getpid() . "\n"); + } + + function clearPidFile() + { + $pidfilename = $this->pidFilename(); + if (!$pidfilename) { + return false; + } + return unlink($pidfilename); + } + + function pidFilename() + { + $piddir = common_config('daemon', 'piddir'); + if (!$piddir) { + return null; + } + $name = $this->name(); + if (!$name) { + return null; + } + return $piddir . '/' . $name . '.pid'; + } + + function changeUser() + { + $username = common_config('daemon', 'user'); + + if ($username) { + $user_info = posix_getpwnam($username); + if (!$user_info) { + common_log(LOG_WARNING, + 'Ignoring unknown user for daemon: ' . $username); + } else { + common_log(LOG_INFO, "Setting user to " . $username); + posix_setuid($user_info['uid']); + } + } + + $groupname = common_config('daemon', 'group'); + + if ($groupname) { + $group_info = posix_getgrnam($groupname); + if (!$group_info) { + common_log(LOG_WARNING, + 'Ignoring unknown group for daemon: ' . $groupname); + } else { + common_log(LOG_INFO, "Setting group to " . $groupname); + posix_setgid($group_info['gid']); + } + } + } + + function runOnce() + { + if ($this->alreadyRunning()) { + common_log(LOG_INFO, $this->name() . ' already running. Exiting.'); + exit(0); + } + if ($this->background()) { + $this->writePidFile(); + $this->changeUser(); + $this->run(); + $this->clearPidFile(); + } + } + + function run() + { + return true; + } } |