Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('boot.php');
$a = new App;
@include('.htconfig.php');
require_once('dba.php');
$db = new dba($db_host, $db_user, $db_pass, $db_data);
unset($db_host, $db_user, $db_pass, $db_data);
require_once('session.php');
require_once('datetime.php');
require_once('simplepie/simplepie.inc');
require_once('include/items.php');
require_once('include/Contact.php');
$debugging = get_config('system','debugging');
$a->set_baseurl(get_config('system','url'));
$contacts = q("SELECT * FROM `contact`
WHERE ( `dfrn-id` != '' OR (`issued-id` != '' AND `duplex` = 1))
AND `self` = 0 AND `blocked` = 0 AND `readonly` = 0 AND `subhub` = 0 ORDER BY RAND()");
if(! count($contacts))
killme();
foreach($contacts as $contact) {
if($contact['priority']) {
$update = false;
$t = $contact['last-update'];
switch ($contact['priority']) {
case 5:
if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
$update = true;
break;
case 4:
if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
$update = true;
break;
case 3:
if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
$update = true;
break;
case 2:
if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
$update = true;
break;
case 1:
default:
if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
$update = true;
break;
}
if(! $update)
continue;
}
$importer_uid = $contact['uid'];
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
intval($importer_uid)
);
if(! count($r))
continue;
$importer = $r[0];
if($debugging)
echo "IMPORTER: {$importer['name']}";
$last_update = (($contact['last-update'] === '0000-00-00 00:00:00')
? datetime_convert('UTC','UTC','now - 30 days','Y-m-d\TH:i:s\Z')
: datetime_convert('UTC','UTC',$contact['last-update'],'Y-m-d\TH:i:s\Z'));
$idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
if(intval($contact['duplex']) && $contact['dfrn-id'])
$idtosend = '0:' . $orig_id;
if(intval($contact['duplex']) && $contact['issued-id'])
$idtosend = '1:' . $orig_id;
$url = $contact['poll'] . '?dfrn_id=' . $idtosend . '&type=data&last_update=' . $last_update ;
$xml = fetch_url($url);
if($debugging) {
echo "URL: " . $url . "\r\n";
echo "XML: " . $xml . "\r\n";
}
if(! $xml) {
// dead connection - might be a transient event, or this might
// mean the software was uninstalled or the domain expired.
// Will keep trying for one month.
mark_for_death($contact);
continue;
}
$res = simplexml_load_string($xml);
if(intval($res->status) == 1) {
// we may not be friends anymore. Will keep trying for one month.
mark_for_death($contact);
}
else {
if($contact['term-date'] != '0000-00-00 00:00:00')
unmark_for_death($contact);
}
if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
continue;
$postvars = array();
$sent_dfrn_id = hex2bin($res->dfrn_id);
$challenge = hex2bin($res->challenge);
$final_dfrn_id = '';
if(($contact['duplex']) && strlen($contact['prvkey'])) {
openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
}
else {
openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
}
$final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
if(strpos($final_dfrn_id,':') == 1)
$final_dfrn_id = substr($final_dfrn_id,2);
if($final_dfrn_id != $orig_id) {
// did not decode properly - cannot trust this site
continue;
}
$postvars['dfrn_id'] = $idtosend;
$xml = post_url($contact['poll'],$postvars);
if($debugging) {
echo "XML response:" . $xml . "\r\n";
echo "Length:" . strlen($xml) . "\r\n";
}
if(! strlen($xml))
continue;
consume_feed($xml,$importer,$contact,$hub);
if((strlen($hub)) && (contact['rel'] == REL_BUD) && ($contact['priority'] == 0)) {
subscribe_to_hub($hub,$importer,$contact);
}
$r = q("UPDATE `contact` SET `last-update` = '%s' WHERE `id` = %d LIMIT 1",
dbesc(datetime_convert()),
intval($contact['id'])
);
}
killme();