310 lines
		
	
	
	
		
			8.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			310 lines
		
	
	
	
		
			8.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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require_once("boot.php");
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function poller_run($argv, $argc){
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	global $a, $db;
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	if(is_null($a)) {
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		$a = new App;
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	}
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	if(is_null($db)) {
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	    @include(".htconfig.php");
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    	require_once("dba.php");
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	    $db = new dba($db_host, $db_user, $db_pass, $db_data);
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    	unset($db_host, $db_user, $db_pass, $db_data);
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  	};
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	require_once('session.php');
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	require_once('datetime.php');
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	require_once('simplepie/simplepie.inc');
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	require_once('include/items.php');
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	require_once('include/Contact.php');
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	$a->set_baseurl(get_config('system','url'));
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	logger('poller: start');
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	// run queue delivery process in the background
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	proc_run('php',"include/queue.php");
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	// clear old cache
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	q("DELETE FROM `cache` WHERE `updated` < '%s'",
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		dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
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	$manual_id  = 0;
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	$hub_update = false;
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	$force      = false;
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	if(($argc > 1) && ($argv[1] == 'force'))
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		$force = true;
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	if(($argc > 1) && intval($argv[1])) {
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		$manual_id = intval($argv[1]);
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		$force     = true;
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	}
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	$sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
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	$d = datetime_convert();
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	call_hooks('cron', $d);
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	reload_plugins();
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	$contacts = q("SELECT `id` FROM `contact` 
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		WHERE ( `rel` = %d OR `rel` = %d ) AND `poll` != ''
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		$sql_extra 
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		AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 ORDER BY RAND()",
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		intval(REL_FAN),
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		intval(REL_BUD)
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	);
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	if(! count($contacts)) {
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		return;
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	}
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	foreach($contacts as $c) {
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		$res = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
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			intval($c['id'])
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		);
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		if(! count($res))
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			continue;
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		foreach($res as $contact) {
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			if($manual_id)
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				$contact['last-update'] = '0000-00-00 00:00:00';
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			if($contact['priority'] || $contact['subhub']) {
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				$hub_update = true;
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				$update     = false;
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				$t = $contact['last-update'];
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				// We should be getting everything via a hub. But just to be sure, let's check once a day.
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				// (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
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				// This also lets us update our subscription to the hub, and add or replace hubs in case it
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				// changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'. 
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				if($contact['subhub']) {
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					$interval = get_config('system','pushpoll_frequency');
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					$contact['priority'] = (($interval !== false) ? intval($interval) : 3);
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					$hub_update = false;
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					if((datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day")) || $force)
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							$hub_update = true;
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				}
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				/**
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				 * Based on $contact['priority'], should we poll this site now? Or later?
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				 */			
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				switch ($contact['priority']) {
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					case 5:
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						if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
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							$update = true;
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						break;					
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					case 4:
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						if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
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							$update = true;
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						break;
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					case 3:
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						if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
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							$update = true;
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						break;
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					case 2:
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						if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
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							$update = true;
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						break;
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					case 1:
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					default:
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						if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
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							$update = true;
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						break;
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				}
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				if((! $update) && (! $force))
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					continue;
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			}
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			$importer_uid = $contact['uid'];
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			$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
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				intval($importer_uid)
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			);
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			if(! count($r))
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				continue;
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			$importer = $r[0];
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			logger("poller: poll: IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
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			$last_update = (($contact['last-update'] === '0000-00-00 00:00:00') 
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				? datetime_convert('UTC','UTC','now - 30 days', ATOM_TIME)
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				: datetime_convert('UTC','UTC',$contact['last-update'], ATOM_TIME)
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			);
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			if($contact['network'] === 'dfrn') {
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				$idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
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				if(intval($contact['duplex']) && $contact['dfrn-id'])
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					$idtosend = '0:' . $orig_id;
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				if(intval($contact['duplex']) && $contact['issued-id'])
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					$idtosend = '1:' . $orig_id;		
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				$url = $contact['poll'] . '?dfrn_id=' . $idtosend 
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					. '&dfrn_version=' . DFRN_PROTOCOL_VERSION 
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					. '&type=data&last_update=' . $last_update ;
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				$xml = fetch_url($url);
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				logger('poller: handshake with url ' . $url . ' returns xml: ' . $xml, LOGGER_DATA);
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				if(! $xml) {
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					logger("poller: $url appears to be dead - marking for death ");
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					// dead connection - might be a transient event, or this might
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					// mean the software was uninstalled or the domain expired. 
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					// Will keep trying for one month.
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					mark_for_death($contact);
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					// set the last-update so we don't keep polling
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					$r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
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						dbesc(datetime_convert()),
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						intval($contact['id'])
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					);
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					continue;
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				}
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				if(! strstr($xml,'<?xml')) {
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					logger('poller: response from ' . $url . ' did not contain XML.');
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					$r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
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						dbesc(datetime_convert()),
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						intval($contact['id'])
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					);
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					continue;
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				}
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				$res = simplexml_load_string($xml);
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				if(intval($res->status) == 1) {
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					logger("poller: $url replied status 1 - marking for death ");
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					// we may not be friends anymore. Will keep trying for one month.
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					// set the last-update so we don't keep polling
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					$r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
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						dbesc(datetime_convert()),
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						intval($contact['id'])
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					);
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					mark_for_death($contact);
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				}
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				else {
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					if($contact['term-date'] != '0000-00-00 00:00:00') {
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						logger("poller: $url back from the dead - removing mark for death");
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						unmark_for_death($contact);
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					}
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				}
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				if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
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					continue;
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				$postvars = array();
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				$sent_dfrn_id = hex2bin((string) $res->dfrn_id);
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				$challenge    = hex2bin((string) $res->challenge);
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				$final_dfrn_id = '';
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				if(($contact['duplex']) && strlen($contact['prvkey'])) {
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					openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
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					openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
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				}
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				else {
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					openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
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					openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
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				}
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				$final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
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				if(strpos($final_dfrn_id,':') == 1)
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					$final_dfrn_id = substr($final_dfrn_id,2);
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				if($final_dfrn_id != $orig_id) {
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					// did not decode properly - cannot trust this site 
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					continue;
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				}
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				$postvars['dfrn_id'] = $idtosend;
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				$postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
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				$xml = post_url($contact['poll'],$postvars);
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			}
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			else {
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				// $contact['network'] !== 'dfrn'
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				$xml = fetch_url($contact['poll']);
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			}
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			logger('poller: received xml : ' . $xml, LOGGER_DATA);
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			if(! strstr($xml,'<?xml')) {
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				logger('poller: post_handshake: response from ' . $url . ' did not contain XML.');
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				$r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
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					dbesc(datetime_convert()),
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					intval($contact['id'])
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				);
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				continue;
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			}
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			consume_feed($xml,$importer,$contact,$hub,1);
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			// do it twice. Ensures that children of parents which may be later in the stream aren't tossed
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			consume_feed($xml,$importer,$contact,$hub,1);
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			if((strlen($hub)) && ($hub_update) 
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				&& (($contact['rel'] == REL_BUD) || (($contact['network'] === 'stat') && (! $contact['readonly'])))) {
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				logger('poller: subscribing to hub(s) : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
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				$hubs = explode(',', $hub);
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				if(count($hubs)) {
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					foreach($hubs as $h) {
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						$h = trim($h);
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						if(! strlen($h))
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							continue;
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						subscribe_to_hub($h,$importer,$contact);
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					}
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				}
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			}
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			$updated = datetime_convert();
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			$r = q("UPDATE `contact` SET `last-update` = '%s', `success_update` = '%s' WHERE `id` = %d LIMIT 1",
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				dbesc($updated),
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				dbesc($updated),
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				intval($contact['id'])
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			);
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			// loop - next contact
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		}
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	}
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	return;
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}
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if (array_search(__file__,get_included_files())===0){
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  poller_run($argv,$argc);
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  killme();
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}
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