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+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * A snapshot of site stats that can report itself to headquarters
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Stats
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @copyright 2009 Control Yourself, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+if (!defined('LACONICA')) {
+ exit(1);
+}
+
+/**
+ * A snapshot of site stats that can report itself to headquarters
+ *
+ * This class will collect statistics on the site and report them to
+ * a statistics server of the admin's choice. (Default is the big one
+ * at laconi.ca.)
+ *
+ * It can either be called from a cron job, or run occasionally by the
+ * Web site.
+ *
+ * @category Stats
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ *
+ */
+
+class Snapshot
+{
+ var $stats = null;
+
+ /**
+ * Constructor for a snapshot
+ */
+
+ function __construct()
+ {
+ }
+
+ /**
+ * Static function for reporting statistics
+ *
+ * This function checks whether it should report statistics, based on
+ * the current configuation settings. If it should, it creates a new
+ * Snapshot object, takes a snapshot, and reports it to headquarters.
+ *
+ * @return void
+ */
+
+ static function check()
+ {
+ switch (common_config('snapshot', 'run')) {
+ case 'web':
+ // skip if we're not running on the Web.
+ if (!isset($_SERVER) || !array_key_exists('REQUEST_METHOD', $_SERVER)) {
+ break;
+ }
+ // Run once every frequency hits
+ // XXX: do frequency by time (once a week, etc.) rather than
+ // hits
+ if (rand() % common_config('snapshot', 'frequency') == 0) {
+ $snapshot = new Snapshot();
+ $snapshot->take();
+ $snapshot->report();
+ }
+ break;
+ case 'cron':
+ // skip if we're running on the Web
+ if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
+ break;
+ }
+ common_log(LOG_INFO, 'Running snapshot from cron job');
+ // We're running from the command line; assume
+
+ $snapshot = new Snapshot();
+ $snapshot->take();
+ common_log(LOG_INFO, count($snapshot->stats) . " statistics being uploaded.");
+ $snapshot->report();
+
+ break;
+ case 'never':
+ break;
+ default:
+ common_log(LOG_WARNING, "Unrecognized value for snapshot run config.");
+ }
+ }
+
+ /**
+ * Take a snapshot of the server
+ *
+ * Builds an array of statistical and configuration data based
+ * on the local database and config files. We avoid grabbing any
+ * information that could be personal or private.
+ *
+ * @return void
+ */
+
+ function take()
+ {
+ $this->stats = array();
+
+ // Some basic identification stuff
+
+ $this->stats['version'] = LACONICA_VERSION;
+ $this->stats['phpversion'] = phpversion();
+ $this->stats['name'] = common_config('site', 'name');
+ $this->stats['root'] = common_root_url();
+
+ // non-identifying stats on various tables. Primary
+ // interest is size and rate of activity of service.
+
+ $tables = array('user',
+ 'notice',
+ 'subscription',
+ 'remote_profile',
+ 'user_group');
+
+ foreach ($tables as $table) {
+ $this->tableStats($table);
+ }
+
+ // stats on some important config options
+
+ $this->stats['theme'] = common_config('site', 'theme');
+ $this->stats['dbtype'] = common_config('db', 'type');
+ $this->stats['xmpp'] = common_config('xmpp', 'enabled');
+ $this->stats['inboxes'] = common_config('inboxes', 'enabled');
+ $this->stats['queue'] = common_config('queue', 'enabled');
+ $this->stats['license'] = common_config('license', 'url');
+ $this->stats['fancy'] = common_config('site', 'fancy');
+ $this->stats['private'] = common_config('site', 'private');
+ $this->stats['closed'] = common_config('site', 'closed');
+ $this->stats['memcached'] = common_config('memcached', 'enabled');
+ $this->stats['language'] = common_config('site', 'language');
+ $this->stats['timezone'] = common_config('site', 'timezone');
+
+ }
+
+ /**
+ * Reports statistics to headquarters
+ *
+ * Posts statistics to a reporting server.
+ *
+ * @return void
+ */
+
+ function report()
+ {
+ // XXX: Use OICU2 and OAuth to make authorized requests
+
+ $postdata = http_build_query($this->stats);
+
+ $opts =
+ array('http' =>
+ array(
+ 'method' => 'POST',
+ 'header' => 'Content-type: '.
+ 'application/x-www-form-urlencoded',
+ 'content' => $postdata,
+ 'user_agent' => 'Laconica/'.LACONICA_VERSION
+ )
+ );
+
+ $context = stream_context_create($opts);
+
+ $reporturl = common_config('snapshot', 'reporturl');
+
+ $result = @file_get_contents($reporturl, false, $context);
+
+ return $result;
+ }
+
+ /**
+ * Updates statistics for a single table
+ *
+ * Determines the size of a table and its oldest and newest rows.
+ * Goal here is to see how active a site is. Note that it
+ * fills up the instance stats variable.
+ *
+ * @param string $table name of table to check
+ *
+ * @return void
+ */
+
+ function tableStats($table)
+ {
+ $inst = DB_DataObject::factory($table);
+
+ $inst->selectAdd();
+ $inst->selectAdd('count(*) as cnt, '.
+ 'min(created) as first, '.
+ 'max(created) as last');
+
+ if ($inst->find(true)) {
+ $this->stats[$table.'count'] = $inst->cnt;
+ $this->stats[$table.'first'] = $inst->first;
+ $this->stats[$table.'last'] = $inst->last;
+ }
+
+ $inst->free();
+ unset($inst);
+ }
+}