function reap_children()
{
    global $children;
    global $ctimes;
    $tmp = array();
    foreach ($children as $pid) {
        if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) {
            if (file_is_locked("update_daemon-{$pid}.lock")) {
                array_push($tmp, $pid);
            } else {
                _debug("[reap_children] child {$pid} seems active but lockfile is unlocked.");
            }
        } else {
            _debug("[reap_children] child {$pid} reaped.");
            unset($ctimes[$pid]);
        }
    }
    $children = $tmp;
    return count($tmp);
}

function make_runtime_info()
{
    $data = array();
    $result = db_query("SELECT MAX(id) AS mid, COUNT(*) AS nf FROM\n\t\t\tttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
    $max_feed_id = db_fetch_result($result, 0, "mid");
    $num_feeds = db_fetch_result($result, 0, "nf");
    $data["max_feed_id"] = (int) $max_feed_id;
    $data["num_feeds"] = (int) $num_feeds;
    $data['last_article_id'] = getLastArticleId();
    $data['cdm_expanded'] = get_pref('CDM_EXPANDED');
    $data['dep_ts'] = calculate_dep_timestamp();
    $data['reload_on_ts_change'] = !defined('_NO_RELOAD_ON_TS_CHANGE');
    if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
        $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
        if (time() - $_SESSION["daemon_stamp_check"] > 30) {
            $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
            if ($stamp) {
                $stamp_delta = time() - $stamp;
                if ($stamp_delta > 1800) {
                    $stamp_check = 0;
                } else {
                    $stamp_check = 1;
                    $_SESSION["daemon_stamp_check"] = time();
                }
                $data['daemon_stamp_ok'] = $stamp_check;
                $stamp_fmt = date("Y.m.d, G:i", $stamp);
                $data['daemon_stamp'] = $stamp_fmt;
            }
        }
    }
    if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
        $new_version_details = @check_for_update();
        $data['new_version_available'] = (int) ($new_version_details != false);
        $_SESSION["last_version_check"] = time();
        $_SESSION["version_data"] = $new_version_details;
    }
    return $data;
}

 function getConfig()
 {
     $config = array("icons_dir" => ICONS_DIR, "icons_url" => ICONS_URL);
     $config["daemon_is_running"] = file_is_locked("update_daemon.lock");
     $result = $this->dbh->query("SELECT COUNT(*) AS cf FROM\n\t\t\tttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
     $num_feeds = $this->dbh->fetch_result($result, 0, "cf");
     $config["num_feeds"] = (int) $num_feeds;
     $this->wrap(self::STATUS_OK, $config);
 }

function expire_lock_files($debug)
{
    //if ($debug) _debug("Removing old lock files...");
    $num_deleted = 0;
    if (is_writable(LOCK_DIRECTORY)) {
        $files = glob(LOCK_DIRECTORY . "/*.lock");
        if ($files) {
            foreach ($files as $file) {
                if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400 * 2) {
                    unlink($file);
                    ++$num_deleted;
                }
            }
        }
    }
    if ($debug) {
        _debug("Removed {$num_deleted} old lock files.");
    }
}

function print_runtime_info($link)
{
    print "<runtime-info>";
    $result = db_query($link, "SELECT COUNT(*) AS cf FROM\n\t\t\tttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
    $num_feeds = db_fetch_result($result, 0, "cf");
    print "<param key=\"num_feeds\" value=\"" . (int) $num_feeds . "\"/>";
    if (ENABLE_UPDATE_DAEMON) {
        print "<param key=\"daemon_is_running\" value=\"" . (int) file_is_locked("update_daemon.lock") . "\"/>";
        if (time() - $_SESSION["daemon_stamp_check"] > 30) {
            $stamp = (int) read_stampfile("update_daemon.stamp");
            //				print "<param key=\"daemon_stamp_delta\" value=\"$stamp_delta\"/>";
            if ($stamp) {
                $stamp_delta = time() - $stamp;
                if ($stamp_delta > 1800) {
                    $stamp_check = 0;
                } else {
                    $stamp_check = 1;
                    $_SESSION["daemon_stamp_check"] = time();
                }
                print "<param key=\"daemon_stamp_ok\" value=\"{$stamp_check}\"/>";
                $stamp_fmt = date("Y.m.d, G:i", $stamp);
                print "<param key=\"daemon_stamp\" value=\"{$stamp_fmt}\"/>";
            }
        }
    }
    if (CHECK_FOR_NEW_VERSION && $_SESSION["access_level"] >= 10) {
        if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
            $new_version_details = check_for_update($link);
            print "<param key=\"new_version_available\" value=\"" . sprintf("%d", $new_version_details != "") . "\"/>";
            $_SESSION["last_version_check"] = time();
        }
    }
    //		print "<param key=\"new_version_available\" value=\"1\"/>";
    print "</runtime-info>";
}

     $article_id = join(",", array_filter(explode(",", db_escape_string($_REQUEST["article_id"])), is_numeric));
     $query = "SELECT id,title,link,content,feed_id,comments,int_id,\n\t\t\t\tmarked,unread,published,\n\t\t\t\t" . SUBSTRING_FOR_DATE . "(updated,1,16) as updated,\n\t\t\t\tauthor\n\t\t\t\tFROM ttrss_entries,ttrss_user_entries\n\t\t\t\tWHERE\tid IN ({$article_id}) AND ref_id = id AND owner_uid = " . $_SESSION["uid"];
     $result = db_query($link, $query);
     $articles = array();
     if (db_num_rows($result) != 0) {
         while ($line = db_fetch_assoc($result)) {
             $attachments = get_article_enclosures($link, $line['id']);
             $article = array("id" => $line["id"], "title" => $line["title"], "link" => $line["link"], "labels" => get_article_labels($link, $line['id']), "unread" => sql_bool_to_bool($line["unread"]), "marked" => sql_bool_to_bool($line["marked"]), "published" => sql_bool_to_bool($line["published"]), "comments" => $line["comments"], "author" => $line["author"], "updated" => strtotime($line["updated"]), "content" => $line["content"], "feed_id" => $line["feed_id"], "attachments" => $attachments);
             array_push($articles, $article);
         }
     }
     print api_wrap_reply(API_STATUS_OK, $seq, $articles);
     break;
 case "getConfig":
     $config = array("icons_dir" => ICONS_DIR, "icons_url" => ICONS_URL);
     $config["daemon_is_running"] = file_is_locked("update_daemon.lock");
     $result = db_query($link, "SELECT COUNT(*) AS cf FROM\n\t\t\t\tttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
     $num_feeds = db_fetch_result($result, 0, "cf");
     $config["num_feeds"] = (int) $num_feeds;
     print api_wrap_reply(API_STATUS_OK, $seq, $config);
     break;
 case "updateFeed":
     $feed_id = db_escape_string($_REQUEST["feed_id"]);
     update_rss_feed($link, $feed_id, true);
     print api_wrap_reply(API_STATUS_OK, $seq, array("status" => "OK"));
     break;
 case "catchupFeed":
     $feed_id = db_escape_string($_REQUEST["feed_id"]);
     $is_cat = db_escape_string($_REQUEST["is_cat"]);
     catchup_feed($link, $feed_id, $is_cat);
     print api_wrap_reply(API_STATUS_OK, $seq, array("status" => "OK"));