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']));
$dfrn_version = (float) $_POST['dfrn_version'];
$challenge = notags(trim($_POST['challenge']));
$data = $_POST['data'];
$direction = (-1);
if(strpos($dfrn_id,':') == 1) {
$direction = intval(substr($dfrn_id,0,1));
$dfrn_id = substr($dfrn_id,2);
}
$r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
dbesc($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.
$sql_extra = '';
switch($direction) {
case (-1):
$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
break;
case 0:
$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
break;
case 1:
$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
break;
default:
xml_status(3);
break; // NOTREACHED
}
$r = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`, `user`.* FROM `contact`
LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 $sql_extra LIMIT 1"
);
if(! count($r)) {
xml_status(3);
//NOTREACHED
}
$importer = $r[0];
if($importer['readonly']) {
// We aren't receiving stuff from this person. But we will quietly ignore them
// rather than a blatant "go away" message.
xml_status(0);
//NOTREACHED
}
// Consume notification feed. This may differ from consuming a public feed in several ways
// - might contain email
// - might contain remote followup to our message
// - in which case we need to accept it and then notify other conversants
// - we may need to send various email notifications
$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['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'])));
dbesc_array($msg);
$r = q("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
. "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
// send email notification if requested.
require_once('bbcode.php');
if($importer['notify-flags'] & NOTIFY_MAIL) {
$tpl = load_view_file('view/mail_received_eml.tpl');
$email_tpl = replace_macros($tpl, array(
'$sitename' => $a->config['sitename'],
'$siteurl' => $a->get_baseurl(),
'$username' => $importer['username'],
'$email' => $importer['email'],
'$from' => $msg['from-name'],
'$title' => stripslashes($msg['title']),
'$body' => strip_tags(bbcode(stripslashes($msg['body'])))
));
$res = mail($importer['email'], t('New mail received at ') . $a->config['sitename'],
$email_tpl, 'From: ' . t('Administrator') . '@' . $a->get_hostname() );
}
xml_status(0);
// NOTREACHED
}
foreach($feed->get_items() as $item) {
$deleted = false;
$rawdelete = $item->get_item_tags( NAMESPACE_TOMB , 'deleted-entry');
if(isset($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($importer['importer_uid'])
);
if(count($r)) {
$item = $r[0];
if($item['uri'] == $item['parent-uri']) {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
WHERE `parent-uri` = '%s' AND `uid` = %d",
dbesc($when),
dbesc(datetime_convert()),
dbesc($item['uri']),
intval($importer['importer_uid'])
);
}
else {
$r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s'
WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
dbesc($when),
dbesc(datetime_convert()),
dbesc($uri),
intval($importer['importer_uid'])
);
if($item['last-child']) {
// ensure that last-child is set in case the comment that had it just got wiped.
$q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
dbesc(datetime_convert()),
dbesc($item['parent-uri']),
intval($item['uid'])
);
// who is the last child now?
$r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
ORDER BY `created` DESC LIMIT 1",
dbesc($item['parent-uri']),
intval($importer['importer_uid'])
);
if(count($r)) {
q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
intval($r[0]['id'])
);
}
}
}
}
continue;
}
$is_reply = false;
$item_id = $item->get_id();
$rawthread = $item->get_item_tags( NAMESPACE_THREAD, 'in-reply-to');
if(isset($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);
$datarray['type'] = 'remote-comment';
$datarray['wall'] = 1;
$datarray['parent-uri'] = $parent_uri;
$datarray['uid'] = $importer['importer_uid'];
$datarray['contact-id'] = $importer['id'];
if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
$datarray['type'] = 'activity';
$datarray['gravity'] = GRAVITY_LIKE;
}
$posted_id = item_store($datarray);
if($posted_id) {
$r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($posted_id),
intval($importer['importer_uid'])
);
if(count($r)) {
$r1 = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `uid` = %d AND `parent` = %d",
dbesc(datetime_convert()),
intval($importer['importer_uid']),
intval($r[0]['parent'])
);
}
$r2 = q("UPDATE `item` SET `last-child` = 1, `changed` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
dbesc(datetime_convert()),
intval($importer['importer_uid']),
intval($posted_id)
);
if($datarray['type'] == 'remote-comment') {
$php_path = ((strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
$proc_debug = get_config('system','proc_debug');
proc_close(proc_open("\"$php_path\" \"include/notifier.php\" \"comment-import\" \"$posted_id\" $proc_debug &",
array(),$foo));
if(($importer['notify-flags'] & NOTIFY_COMMENT) && (! $importer['self'])) {
require_once('bbcode.php');
$from = stripslashes($datarray['author-name']);
$tpl = load_view_file('view/cmnt_received_eml.tpl');
$email_tpl = replace_macros($tpl, array(
'$sitename' => $a->config['sitename'],
'$siteurl' => $a->get_baseurl(),
'$username' => $importer['username'],
'$email' => $importer['email'],
'$from' => $from,
'$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
));
$res = mail($importer['email'], $from . t(" commented on your item at ") . $a->config['sitename'],
$email_tpl,t("From: Administrator@") . $a->get_hostname() );
}
}
}
xml_status(0);
// NOTREACHED
}
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($importer['importer_uid'])
);
// FIXME update content if 'updated' changes
if(count($r)) {
$allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc(datetime_convert()),
dbesc($item_id),
intval($importer['importer_uid'])
);
}
continue;
}
$datarray = get_atom_elements($item);
$datarray['parent-uri'] = $parent_uri;
$datarray['uid'] = $importer['importer_uid'];
$datarray['contact-id'] = $importer['id'];
if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
$datarray['type'] = 'activity';
$datarray['gravity'] = GRAVITY_LIKE;
}
$r = item_store($datarray);
// find out if our user is involved in this conversation and wants to be notified.
if(($datarray['type'] != 'activity') && ($importer['notify-flags'] & NOTIFY_COMMENT)) {
$myconv = q("SELECT `author-link` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d",
dbesc($parent_uri),
intval($importer['importer_uid'])
);
if(count($myconv)) {
foreach($myconv as $conv) {
if($conv['author-link'] != $importer['url'])
continue;
require_once('bbcode.php');
$from = stripslashes($datarray['author-name']);
$tpl = load_view_file('view/cmnt_received_eml.tpl');
$email_tpl = replace_macros($tpl, array(
'$sitename' => $a->config['sitename'],
'$siteurl' => $a->get_baseurl(),
'$username' => $importer['username'],
'$email' => $importer['email'],
'$from' => $from,
'$body' => strip_tags(bbcode(stripslashes($datarray['body'])))
));
$res = mail($importer['email'], $from . t(" commented on an item at ")
. $a->config['sitename'],
$email_tpl,t("From: Administrator@") . $a->get_hostname() );
break;
}
}
}
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($importer['importer_uid'])
);
if(count($r)) {
$allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
if($allow && $allow[0]['data'] != $r[0]['last-child']) {
$r = q("UPDATE `item` SET `last-child` = %d, `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
intval($allow[0]['data']),
dbesc(datetime_convert()),
dbesc($item_id),
intval($importer['importer_uid'])
);
}
continue;
}
$datarray = get_atom_elements($item);
$datarray['parent-uri'] = $item_id;
$datarray['uid'] = $importer['importer_uid'];
$datarray['contact-id'] = $importer['id'];
$r = item_store($datarray);
continue;
}
}
xml_status(0);
// NOTREACHED
}
function dfrn_notify_content(&$a) {
if(x($_GET,'dfrn_id')) {
// initial communication from external contact, $direction is their direction.
// If this is a duplex communication, ours will be the opposite.
$dfrn_id = notags(trim($_GET['dfrn_id']));
$dfrn_version = (float) $_GET['dfrn_version'];
$direction = (-1);
if(strpos($dfrn_id,':') == 1) {
$direction = intval(substr($dfrn_id,0,1));
$dfrn_id = substr($dfrn_id,2);
}
$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($dfrn_id),
intval(time() + 60 )
);
$sql_extra = '';
switch($direction) {
case (-1):
$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
$my_id = $dfrn_id;
break;
case 0:
$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
$my_id = '1:' . $dfrn_id;
break;
case 1:
$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
$my_id = '0:' . $dfrn_id;
break;
default:
$status = 1;
break; // NOTREACHED
}
$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
if(! count($r))
$status = 1;
$challenge = '';
$encrypted_id = '';
$id_str = $my_id . '.' . mt_rand(1000,9999);
if(($r[0]['duplex']) && strlen($r[0]['pubkey'])) {
openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
}
else {
openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
}
$challenge = bin2hex($challenge);
$encrypted_id = bin2hex($encrypted_id);
header("Content-type: text/xml");
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\r\n"
. '<dfrn_notify>' . "\r\n"
. "\t" . '<status>' . $status . '</status>' . "\r\n"
. "\t" . '<dfrn_version>' . DFRN_PROTOCOL_VERSION . '</dfrn_version>' . "\r\n"
. "\t" . '<dfrn_id>' . $encrypted_id . '</dfrn_id>' . "\r\n"
. "\t" . '<challenge>' . $challenge . '</challenge>' . "\r\n"
. '</dfrn_notify>' . "\r\n" ;
killme();
}
}