<?php
use Friendica\App;
+use Friendica\Core\Config;
+use Friendica\Core\Logger;
+use Friendica\Core\System;
+use Friendica\Database\DBA;
+use Friendica\Model\PushSubscriber;
+use Friendica\Util\Network;
+use Friendica\Util\Strings;
function post_var($name) {
- return (x($_POST, $name)) ? notags(trim($_POST[$name])) : '';
+ return !empty($_POST[$name]) ? Strings::escapeTags(trim($_POST[$name])) : '';
}
function pubsubhubbub_init(App $a) {
// PuSH subscription must be considered "public" so just block it
// if public access isn't enabled.
- if (get_config('system', 'block_public')) {
- http_status_exit(403);
+ if (Config::get('system', 'block_public')) {
+ System::httpExit(403);
}
// Subscription request from subscriber
// https://pubsubhubbub.googlecode.com/git/pubsubhubbub-core-0.4.html#anchor4
// Example from GNU Social:
- // [hub_mode] => subscribe
- // [hub_callback] => http://status.local/main/push/callback/1
- // [hub_verify] => sync
- // [hub_verify_token] => af11...
- // [hub_secret] => af11...
- // [hub_topic] => http://friendica.local/dfrn_poll/sazius
-
- if($_SERVER['REQUEST_METHOD'] === 'POST') {
+ // [hub_mode] => subscribe
+ // [hub_callback] => http://status.local/main/push/callback/1
+ // [hub_verify] => sync
+ // [hub_verify_token] => af11...
+ // [hub_secret] => af11...
+ // [hub_topic] => http://friendica.local/dfrn_poll/sazius
+
+ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$hub_mode = post_var('hub_mode');
$hub_callback = post_var('hub_callback');
- $hub_verify = post_var('hub_verify');
$hub_verify_token = post_var('hub_verify_token');
$hub_secret = post_var('hub_secret');
$hub_topic = post_var('hub_topic');
// check for valid hub_mode
if ($hub_mode === 'subscribe') {
$subscribe = 1;
- } else if ($hub_mode === 'unsubscribe') {
+ } elseif ($hub_mode === 'unsubscribe') {
$subscribe = 0;
} else {
- logger("pubsubhubbub: invalid hub_mode=$hub_mode, ignoring.");
- http_status_exit(404);
+ Logger::log("Invalid hub_mode=$hub_mode, ignoring.");
+ System::httpExit(404);
}
- logger("pubsubhubbub: $hub_mode request from " .
- $_SERVER['REMOTE_ADDR']);
+ Logger::log("$hub_mode request from " . $_SERVER['REMOTE_ADDR']);
- // get the nick name from the topic, a bit hacky but needed
- $nick = substr(strrchr($hub_topic, "/"), 1);
+ if ($a->argc > 1) {
+ // Normally the url should now contain the nick name as last part of the url
+ $nick = $a->argv[1];
+ } else {
+ // Get the nick name from the topic as a fallback
+ $nick = $hub_topic;
+ }
+ // Extract nick name and strip any .atom extension
+ $nick = basename($nick, '.atom');
if (!$nick) {
- logger('pubsubhubbub: bad hub_topic=$hub_topic, ignoring.');
- http_status_exit(404);
+ Logger::log('Bad hub_topic=$hub_topic, ignoring.');
+ System::httpExit(404);
}
// fetch user from database given the nickname
- $r = q("SELECT * FROM `user` WHERE `nickname` = '%s'" .
- " AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
- dbesc($nick));
-
- if (!dbm::is_result($r)) {
- logger('pubsubhubbub: local account not found: ' . $nick);
- http_status_exit(404);
+ $condition = ['nickname' => $nick, 'account_expired' => false, 'account_removed' => false];
+ $owner = DBA::selectFirst('user', ['uid', 'hidewall', 'nickname'], $condition);
+ if (!DBA::isResult($owner)) {
+ Logger::log('Local account not found: ' . $nick . ' - topic: ' . $hub_topic . ' - callback: ' . $hub_callback);
+ System::httpExit(404);
}
- $owner = $r[0];
-
// abort if user's wall is supposed to be private
- if ($r[0]['hidewall']) {
- logger('pubsubhubbub: local user ' . $nick .
- 'has chosen to hide wall, ignoring.');
- http_status_exit(403);
+ if ($owner['hidewall']) {
+ Logger::log('Local user ' . $nick . 'has chosen to hide wall, ignoring.');
+ System::httpExit(403);
}
// get corresponding row from contact table
- $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND NOT `blocked`".
- " AND NOT `pending` AND `self` LIMIT 1",
- intval($owner['uid']));
- if (!dbm::is_result($r)) {
- logger('pubsubhubbub: contact not found.');
- http_status_exit(404);
+ $condition = ['uid' => $owner['uid'], 'blocked' => false,
+ 'pending' => false, 'self' => true];
+ $contact = DBA::selectFirst('contact', ['poll'], $condition);
+ if (!DBA::isResult($contact)) {
+ Logger::log('Self contact for user ' . $owner['uid'] . ' not found.');
+ System::httpExit(404);
}
- $contact = $r[0];
-
// sanity check that topic URLs are the same
- if(!link_compare($hub_topic, $contact['poll'])) {
- logger('pubsubhubbub: hub topic ' . $hub_topic . ' != ' .
- $contact['poll']);
- http_status_exit(404);
+ $hub_topic2 = str_replace('/feed/', '/dfrn_poll/', $hub_topic);
+ $self = System::baseUrl() . '/api/statuses/user_timeline/' . $owner['nickname'] . '.atom';
+
+ if (!Strings::compareLink($hub_topic, $contact['poll']) && !Strings::compareLink($hub_topic2, $contact['poll']) && !Strings::compareLink($hub_topic, $self)) {
+ Logger::log('Hub topic ' . $hub_topic . ' != ' . $contact['poll']);
+ System::httpExit(404);
}
// do subscriber verification according to the PuSH protocol
- $hub_challenge = random_string(40);
- $params = 'hub.mode=' .
- ($subscribe == 1 ? 'subscribe' : 'unsubscribe') .
- '&hub.topic=' . urlencode($hub_topic) .
- '&hub.challenge=' . $hub_challenge .
- '&hub.lease_seconds=604800' .
- '&hub.verify_token=' . $hub_verify_token;
+ $hub_challenge = Strings::getRandomHex(40);
- // lease time is hard coded to one week (in seconds)
- // we don't actually enforce the lease time because GNU
- // Social/StatusNet doesn't honour it (yet)
+ $params = http_build_query([
+ 'hub.mode' => $subscribe == 1 ? 'subscribe' : 'unsubscribe',
+ 'hub.topic' => $hub_topic,
+ 'hub.challenge' => $hub_challenge,
+ 'hub.verify_token' => $hub_verify_token,
- $body = fetch_url($hub_callback . "?" . $params);
- $ret = $a->get_curl_code();
+ // lease time is hard coded to one week (in seconds)
+ // we don't actually enforce the lease time because GNU
+ // Social/StatusNet doesn't honour it (yet)
+ 'hub.lease_seconds' => 604800,
+ ]);
+
+ $hub_callback = rtrim($hub_callback, ' ?&#');
+ $separator = parse_url($hub_callback, PHP_URL_QUERY) === null ? '?' : '&';
+
+ $fetchResult = Network::fetchUrlFull($hub_callback . $separator . $params);
+ $body = $fetchResult->getBody();
+ $ret = $fetchResult->getReturnCode();
// give up if the HTTP return code wasn't a success (2xx)
if ($ret < 200 || $ret > 299) {
- logger("pubsubhubbub: subscriber verification at $hub_callback ".
- "returned $ret, ignoring.");
- http_status_exit(404);
+ Logger::log("Subscriber verification for $hub_topic at $hub_callback returned $ret, ignoring.");
+ System::httpExit(404);
}
// check that the correct hub_challenge code was echoed back
if (trim($body) !== $hub_challenge) {
- logger("pubsubhubbub: subscriber did not echo back ".
- "hub.challenge, ignoring.");
- logger("\"$hub_challenge\" != \"".trim($body)."\"");
- http_status_exit(404);
+ Logger::log("Subscriber did not echo back hub.challenge, ignoring.");
+ Logger::log("\"$hub_challenge\" != \"".trim($body)."\"");
+ System::httpExit(404);
}
- // fetch the old subscription if it exists
- $r = q("SELECT * FROM `push_subscriber` WHERE `callback_url` = '%s'",
- dbesc($hub_callback));
-
- // delete old subscription if it exists
- q("DELETE FROM `push_subscriber` WHERE `callback_url` = '%s'",
- dbesc($hub_callback));
-
- if ($subscribe) {
- $last_update = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
- $push_flag = 0;
-
- // if we are just updating an old subscription, keep the
- // old values for push and last_update
- if (dbm::is_result($r)) {
- $last_update = $r[0]['last_update'];
- $push_flag = $r[0]['push'];
- }
-
- // subscribe means adding the row to the table
- q("INSERT INTO `push_subscriber` (`uid`, `callback_url`, " .
- "`topic`, `nickname`, `push`, `last_update`, `secret`) values " .
- "(%d, '%s', '%s', '%s', %d, '%s', '%s')",
- intval($owner['uid']),
- dbesc($hub_callback),
- dbesc($hub_topic),
- dbesc($nick),
- intval($push_flag),
- dbesc($last_update),
- dbesc($hub_secret));
- logger("pubsubhubbub: successfully subscribed [$hub_callback].");
- } else {
- logger("pubsubhubbub: successfully unsubscribed [$hub_callback].");
- // we do nothing here, since the row was already deleted
- }
- http_status_exit(202);
- }
+ PushSubscriber::renew($owner['uid'], $nick, $subscribe, $hub_callback, $hub_topic, $hub_secret);
- killme();
+ System::httpExit(202);
+ }
+ exit();
}
https://reisub.nsupdate.info/git / friendica.git / .git / blobdiff