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('simplepie/simplepie.inc');
require_once('include/items.php');
function dfrn_notify_post(&$a) {
$dfrn_id = notags(trim($_POST['dfrn_id']));
$challenge = notags(trim($_POST['challenge']));
$data = $_POST['data'];
$r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
dbesc($dfrn_id),
dbesc($challenge)
);
if(! count($r))
xml_status(3);
$r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
dbesc($dfrn_id),
dbesc($challenge)
);
// find the local user who owns this relationship.
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
dbesc($dfrn_id)
);
if(! count($r)) {
xml_status(3);
return; //NOTREACHED
}
// We aren't really interested in anything this person has to say. But be polite and make them
// think we're listening intently by acknowledging receipt of their communications - which we quietly ignore.
if($r[0]['readonly']) {
xml_status(0);
return; //NOTREACHED
}
$importer = $r[0];
$feed = new SimplePie();
$feed->set_raw_data($data);
$feed->enable_order_by_date(false);
$feed->init();
$ismail = false;
$rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
$ismail = true;
$base = $rawmail[0]['child'][NAMESPACE_DFRN];
$msg = array();
$msg['uid'] = $importer['uid'];
$msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
$msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
$msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
$msg['contact-id'] = $importer['id'];
$msg['title'] = notags(unxmlify($base['subject'][0]['data']));
$msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
$msg['delivered'] = 1;
$msg['seen'] = 0;
$msg['replied'] = 0;
$msg['uri'] = notags(unxmlify($base['id'][0]['data']));
$msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
$msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
$r = q("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
. "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
// send email notification if requested.
$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
intval($importer['uid'])
);
require_once('bbcode.php');
if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_MAIL)) {
$tpl = file_get_contents('view/mail_received_eml.tpl');
$email_tpl = replace_macros($tpl, array(
'$sitename' => $a->config['sitename'],
'$siteurl' => $a->get_baseurl(),
'$username' => $r[0]['username'],
'$email' => $r[0]['email'],
'$from' => $msg['from-name'],
'$fn' => $r[0]['name'],
'$title' => $msg['title'],
'$body' => strip_tags(bbcode($msg['body']))
));
$res = mail($r[0]['email'], t("New mail received at ") . $a->config['sitename'],
$email_tpl,t("From: Administrator@") . $a->get_hostname() );
}
xml_status(0);
return; // NOTREACHED
}
foreach($feed->get_items() as $item) {
$deleted = false;
$rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
if(isset($rawdelete[0]['attribs']['']['ref'])) {
$uri = $rawthread[0]['attribs']['']['ref'];
$deleted = true;
if(isset($rawdelete[0]['attribs']['']['when'])) {
$when = $rawthread[0]['attribs']['']['when'];
$when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
}
else
$when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
}
if($deleted) {
$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($uri),
intval($importer['uid'])
);
if(count($r)) {
if($r[0]['uri'] == $r[0]['parent-uri']) {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
WHERE `parent-uri` = '%s'",
dbesc($when),
dbesc($r[0]['uri'])
);
}
else {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($when),
dbesc($uri),
intval($importer['uid'])
);
}
}
continue;
}
$is_reply = false;
$item_id = $item->get_id();
$rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
if(isset($rawthread[0]['attribs']['']['ref'])) {
$is_reply = true;
$parent_uri = $rawthread[0]['attribs']['']['ref'];
}
if($is_reply) {
if($feed->get_item_quantity() == 1) {
// remote reply to our post. Import and then notify everybody else.
$datarray = get_atom_elements($item);
$urn = explode(':',$parent_urn);
$datarray['type'] = 'remote-comment';
$datarray['parent-uri'] = $parent_uri;
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $importer['id'];
$posted_id = post_remote($a,$datarray);
$r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($posted_id),
intval($importer['uid'])
);
if(count($r)) {
$r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
intval($importer['uid']),
intval($r[0]['parent'])
);
}
$r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
intval($importer['uid']),
intval($posted_id)
);
$url = $a->get_baseurl();
proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
xml_status(0);
return;
}
else {
// regular comment that is part of this total conversation. Have we seen it? If not, import it.
$item_id = $item->get_id();
$r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($item_id),
intval($importer['uid'])
);
// FIXME update content if 'updated' changes
if(count($r)) {
$allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc($item_id),
intval($importer['uid'])
);
}
continue;
}
$datarray = get_atom_elements($item);
$datarray['parent-uri'] = $parent_uri;
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $importer['id'];
$r = post_remote($a,$datarray);
continue;
}
}
else {
// Head post of a conversation. Have we seen it? If not, import it.
$item_id = $item->get_id();
$r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($item_id),
intval($importer['uid'])
);
if(count($r)) {
$allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc($item_id),
intval($importer['uid'])
);
}
continue;
}
$datarray = get_atom_elements($item);
$datarray['parent-uri'] = $item_id;
$datarray['uid'] = $importer['uid'];
$datarray['contact-id'] = $importer['id'];
$r = post_remote($a,$datarray);
continue;
}
}
xml_status(0);
killme();
}
function dfrn_notify_content(&$a) {
if(x($_GET,'dfrn_id')) {
// initial communication from external contact
$hash = random_string();
$status = 0;
$r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
$r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
VALUES( '%s', '%s', '%s') ",
dbesc($hash),
dbesc(notags(trim($_GET['dfrn_id']))),
intval(time() + 60 )
);
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
dbesc($_GET['dfrn_id']));
if((! count($r)) || (! strlen($r[0]['prvkey'])))
$status = 1;
$challenge = '';
openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
$challenge = bin2hex($challenge);
$encrypted_id = '';
$id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
$encrypted_id = bin2hex($encrypted_id);
echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $encrypted_id . '</dfrn_id>'
. '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
session_write_close();
exit;
}
}