update_daemon.php

   1 #!/usr/bin/php
   2 <?php
   3         // this daemon runs in the background and updates all feeds
   4         // continuously
   5
   6         // define('DEFAULT_ERROR_LEVEL', E_ALL);
   7         define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
   8
   9         declare(ticks = 1);
  10
  11         define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
  12         define('SIMPLEPIE_CACHE_DIR',   '/var/tmp/simplepie-ttrss-cache-daemon');
  13         define('DISABLE_SESSIONS', true);
  14         define('PHP_EXECUTABLE', '/usr/bin/php');
  15
  16         require_once "version.php";
  17
  18         if (strpos(VERSION, ".99") !== false) {
  19                 define('DAEMON_EXTENDED_DEBUG', true);
  20         }
  21
  22         define('PURGE_INTERVAL', 3600); // seconds
  23
  24         require_once "sanity_check.php";
  25         require_once "config.php";
  26
  27         if (!ENABLE_UPDATE_DAEMON) {
  28                 die("Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
  29         }
  30
  31         require_once "db.php";
  32         require_once "db-prefs.php";
  33         require_once "functions.php";
  34         require_once "magpierss/rss_fetch.inc";
  35
  36         error_reporting(DEFAULT_ERROR_LEVEL);
  37
  38         function sigint_handler() {
  39                 unlink(LOCK_DIRECTORY . "/update_daemon.lock");
  40                 die("Received SIGINT. Exiting.\n");
  41         }
  42
  43         function sigalrm_handler() {
  44                 die("received SIGALRM, hang in feed update?\n");
  45         }
  46
  47         pcntl_signal(SIGINT, sigint_handler);
  48         pcntl_signal(SIGALRM, sigalrm_handler);
  49
  50         $lock_handle = make_lockfile("update_daemon.lock");
  51
  52         if (!$lock_handle) {
  53                 die("error: Can't create lockfile ($lock_filename). ".
  54                         "Maybe another daemon is already running.\n");
  55         }
  56
  57         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  58
  59         if (!$link) {
  60                 if (DB_TYPE == "mysql") {
  61                         print mysql_error();
  62                 }
  63                 // PG seems to display its own errors just fine by default.
  64                 return;
  65         }
  66
  67         if (DB_TYPE == "pgsql") {
  68                 pg_query("set client_encoding = 'utf-8'");
  69                 pg_set_client_encoding("UNICODE");
  70         } else {
  71                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
  72                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
  73 //                      db_query($link, "SET CHARACTER SET " . MYSQL_CHARSET);
  74                 }
  75         }
  76
  77         db_close($link);
  78
  79         $last_purge = 0;
  80
  81         while (true) {
  82
  83                 passthru(PHP_EXECUTABLE . " update_daemon_loop.php SRV_RUN_OK");
  84
  85                 _debug("Sleeping for " . DAEMON_SLEEP_INTERVAL . " seconds...");
  86
  87                 sleep(DAEMON_SLEEP_INTERVAL);
  88         }
  89
  90
  91 ?>