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Diffstat (limited to 'includes/daemonize/daemonize.php')
| -rw-r--r-- | includes/daemonize/daemonize.php | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/includes/daemonize/daemonize.php b/includes/daemonize/daemonize.php deleted file mode 100644 index 1f51708..0000000 --- a/includes/daemonize/daemonize.php +++ /dev/null @@ -1,205 +0,0 @@ -<?php -/* This script daemonizes a PHP CLI script. - -Based on code from Dewi Morgan, http://www.thudgame.com/node/254 -Modified by bitweaver.org - spider@viovio.com, et al - -This code is explicitly released onto the public domain by myself, -Dewi Morgan, the author. As such, it is not subject to copyright. -You may do with it as you will. Credit, while appreciated, need not -be given. This notice does not need to be included. - -Call from cron every minute as: -* * * * * /path/to/bin/php /path/to/script/daemonize.php /path/to/script/daemon.php 2>&1 >> /path/to/logfile -Could be trivially modified to take the script and other globals -as arguments. But that seems a bit pointless to me. -*/ - -function usage_die( $pError ) { - die( "ERROR: $pError\nUsage: /path/to/bin/php /path/to/script/daemonize.php /path/to/script/daemon.php [--debug] [--nohup] [--pidfile=/path/to/lock/daemon.pid]\n\n" ); -} - -$PHP = $_SERVER['_']; # Remember to change the #! line above, too. -if( empty( $argv[1] ) || !file_exists( $argv[1] ) ) { - usage_die( 'daemon script not found' ); -} -$daemonScript = $argv[1]; - -$debug = FALSE; -if( !empty( $argv[2] ) ) { - // convert any remaining arguments into local variables - for( $i=2; $i < count( $argv ); $i++ ) { - $arg = preg_replace( '/^[-]*/', '', $argv[$i] ); - @list( $name, $val ) = @split( '=', $arg ); - ${$name} = (!empty( $val ) ? $val : TRUE); - } -} - - -if( empty( $pidfile ) ) { - $pidfile = '/var/lock/php-' . basename( $daemonScript,'.php' ).'.pid'; -} - -# Must contain any of nohup, perl, daemonise.pl, is_up.php and this script -# That you intend to use. -# Get the following values from "kill -l" or /usr/include/linux/signal.h -# Should be correct for most unixes. -$SIGTERM = 15; -$SIGKILL = 9; - -# If we've self-bootstrapped, then load the bot and run with it. -if ( !empty( $nohup ) ) { - to_log("arg detected, bootstrapping daemon through require."); - require( $daemonScript ); - to_log("killing daemon child."); - exit(0); -} - -# If we're already started, then don't bother running. -if( empty( $nohup ) ) { - $test = 0; - $lines = array(0, 0); - $pid_data = "unread"; - - #to_log("Testing for pre-existing... $pidfile"); # Can get spammy. - if (file_exists($pidfile)) { - $pid_data = file_get_contents($pidfile); - $lines = explode("\n", $pid_data); - if (!empty($lines[0]) && is_numeric($lines[0]) && !empty($lines[1]) && is_numeric($lines[1])) { - # Kill hung processes. - if ($lines[1] + 300 < time()) { // If it's an OLD pidfile... - to_log("$pidfile OLD pidfile found from $lines[1] - ".date('d/M/Y:H:i:s O',$lines[1]).": $pid_data"); - zero_file($pidfile); - - # If found, kill. If it won't die, kill it harder. Then give up. - # In practice, it can take a bit longer than 20 seconds to die, but it - # tries again in a minute's time, and works. - if (is_alive($lines[0])) { - to_log("killing and waiting a few secs..."); - posix_kill($lines[0], $SIGTERM); - # Loop for 10 seconds, or until it dies. - for ($i=0; $i<20 && is_alive($lines[0]); $i++) { - sleep(1); - if ($i == 10) { # After ten seconds, kill it harder. - to_log("Failed to kill it. Killing it harder!"); - posix_kill($lines[0], $SIGKILL); - } - } - if (is_alive($lines[0])) { - to_log("Failed to kill it. Giving up."); - exit(0); - } - } - } else { - #to_log("Young pidfile found."); # Can get spammy. - } - if (is_alive($lines[0])) { -// to_log( "DAEMON $lines[0] : $daemonScript running. Last seen at ".date('d/M/Y:H:i:s O', $lines[1] ) ); - exit(0); - } else { - to_log("$pidfile pidfile $lines[0] found, but process is dead."); - } - } - else { - to_log("$pidfile Bad format pidfile found, zeroing, restarting..."); - zero_file($pidfile); - } - } - else { - to_log("pidfile not found: $pidfile"); - } - to_log("NOT found running."); -} - -# If pcntl_fork() doesn't exist, we need to load ourselves in the background, then die. -if (!function_exists("pcntl_fork")) { - to_log("no pcntl, calling self with nohup and param"); - system("nohup $PHP $argv[1] -nohup &", $return); - if ($return == 0) { exit(0); } - # If there was a problem, we have one more ace in the hole - perl! - to_log("nohup failed with return $return, calling self with perl"); - system("perl ".dirname( $argv[0] )."daemonize.pl &", $return); - to_log("killing daemon parent with return $return"); - exit(0); -} - -# If we've got the right functions to play with, all the above becomes moot. -to_log("we have pcntl! Doing it all ourselves!"); - -# Replace file handles -$fh_unused = array(STDIN, STDOUT); - -ob_implicit_flush(); - -# Daemon Rule 1) Fork and exit the parent. -$pid = pcntl_fork(); -if ($pid == -1) { - die("could not fork"); -} -else if ($pid) { - exit(); # Kill the parent -} - -# Daemon Rule 2) become session leader, pg leader, no term -$session_id = posix_setsid(); -if (!$session_id) { - die("Could not detach from terminal."); -} - -# Daemon Rule 3) cd to / -if (!chdir('/')) { die("Could not cd to rootfs"); } - -# Daemon Rule 4) set file creation mask to 0 -$oldmask = umask(00); - -# Daemon Rule 5) Close unneeded file handles -foreach ($fh_unused as $fh) { - if (!fclose($fh)) { die("Unable to close $fh"); } -} - -# Daemon Rule 6) Set up signal handlers where necessary. -pcntl_signal(SIGTERM, "sig_handler"); -pcntl_signal(SIGHUP, "sig_handler"); - - -function sig_handler($signo) { - switch ($signo) { - case SIGTERM: - # handle shutdown tasks - die("Caught thud SIGTERM"); - break; - case SIGHUP: - # handle restart tasks - die("Caught thud SIGHUP"); - break; - default: - # handle all other signals - } -} - -# Meat of the daemon goes here. -to_log("requiring $daemonScript"); -chdir( dirname( $daemonScript ) ); -require_once( $daemonScript ); - -exit(0); - - -# Access functions. -function is_alive($pid) { - $output = array(); - exec( dirname( __FILE__ )."/is_up.sh $pid", $output ); - $result = $output[0]; - return (0 < $result); -} - -function to_log($string) { - error_log( date( 'd/M/Y:H:i:s O' )." - $string"); -} - -function zero_file($pidfile) { - $fp = fopen($pidfile, "w"); - fwrite($fp, ""); # Zero the pidfile. - fclose($fp); -} -?> |