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
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Worker;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model;
use Friendica\Protocol\DFRN;
use Friendica\Protocol\Diaspora;
use Friendica\Protocol\Email;
use Friendica\Protocol\Activity;
use Friendica\Util\Strings;
use Friendica\Util\Network;
use Friendica\Core\Worker;
use Friendica\Model\Conversation;
use Friendica\Model\FContact;
use Friendica\Model\Item;
use Friendica\Model\Post;
use Friendica\Protocol\Relay;
class Delivery
{
const MAIL = 'mail';
const SUGGESTION = 'suggest';
const RELOCATION = 'relocate';
const DELETION = 'drop';
const POST = 'wall-new';
const POKE = 'poke';
const UPLINK = 'uplink';
const REMOVAL = 'removeme';
const PROFILEUPDATE = 'profileupdate';
public static function execute(string $cmd, int $post_uriid, int $contact_id, int $sender_uid = 0)
{
Logger::info('Invoked', ['cmd' => $cmd, 'target' => $post_uriid, 'sender_uid' => $sender_uid, 'contact' => $contact_id]);
$top_level = false;
$followup = false;
$public_message = false;
$items = [];
if ($cmd == self::MAIL) {
$target_item = DBA::selectFirst('mail', [], ['id' => $post_uriid]);
if (!DBA::isResult($target_item)) {
return;
}
$uid = $target_item['uid'];
} elseif ($cmd == self::SUGGESTION) {
$target_item = DBA::selectFirst('fsuggest', [], ['id' => $post_uriid]);
if (!DBA::isResult($target_item)) {
return;
}
$uid = $target_item['uid'];
} elseif ($cmd == self::RELOCATION) {
$uid = $post_uriid;
$target_item = [];
} else {
$item = Model\Post::selectFirst(['id', 'parent'], ['uri-id' => $post_uriid, 'uid' => $sender_uid]);
if (!DBA::isResult($item) || empty($item['parent'])) {
Logger::warning('Post not found', ['uri-id' => $post_uriid, 'uid' => $sender_uid]);
return;
}
$target_id = intval($item['id']);
$parent_id = intval($item['parent']);
$condition = ['id' => [$target_id, $parent_id], 'visible' => true];
$params = ['order' => ['id']];
$itemdata = Model\Post::select(Item::DELIVER_FIELDLIST, $condition, $params);
while ($item = Model\Post::fetch($itemdata)) {
if ($item['verb'] == Activity::ANNOUNCE) {
continue;
}
if ($item['id'] == $parent_id) {
$parent = $item;
}
if ($item['id'] == $target_id) {
$target_item = $item;
}
$items[] = $item;
}
DBA::close($itemdata);
if (empty($target_item)) {
Logger::log('Item ' . $target_id . "wasn't found. Quitting here.");
return;
}
if (empty($parent)) {
Logger::log('Parent ' . $parent_id . ' for item ' . $target_id . "wasn't found. Quitting here.");
self::setFailedQueue($cmd, $target_item);
return;
}
if (!empty($target_item['contact-uid'])) {
$uid = $target_item['contact-uid'];
} elseif (!empty($target_item['uid'])) {
$uid = $target_item['uid'];
} else {
Logger::log('Only public users for item ' . $target_id, Logger::DEBUG);
self::setFailedQueue($cmd, $target_item);
return;
}
$condition = ['uri' => $target_item['thr-parent'], 'uid' => $target_item['uid']];
$thr_parent = Model\Post::selectFirst(['network', 'object'], $condition);
if (!DBA::isResult($thr_parent)) {
// Shouldn't happen. But when this does, we just take the parent as thread parent.
// That's totally okay for what we use this variable here.
$thr_parent = $parent;
}
if (!empty($contact_id) && Model\Contact::isArchived($contact_id)) {
Logger::info('Contact is archived', ['id' => $contact_id, 'cmd' => $cmd, 'item' => $target_item['id']]);
self::setFailedQueue($cmd, $target_item);
return;
}
// avoid race condition with deleting entries
if ($items[0]['deleted']) {
foreach ($items as $item) {
$item['deleted'] = 1;
}
}
$top_level = $target_item['gravity'] == GRAVITY_PARENT;
// This is IMPORTANT!!!!
// We will only send a "notify owner to relay" or followup message if the referenced post
// originated on our system by virtue of having our hostname somewhere
// in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
// if $parent['wall'] == 1 we will already have the parent message in our array
// and we will relay the whole lot.
$localhost = DI::baseUrl()->getHostname();
if (strpos($localhost, ':')) {
$localhost = substr($localhost, 0, strpos($localhost, ':'));
}
/**
*
* Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
* have been known to cause runaway conditions which affected several servers, along with
* permissions issues.
*
*/
if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
Logger::log('Followup ' . $target_item["guid"], Logger::DEBUG);
// local followup to remote post
$followup = true;
}
if (empty($parent['allow_cid'])
&& empty($parent['allow_gid'])
&& empty($parent['deny_cid'])
&& empty($parent['deny_gid'])
&& ($parent["private"] != Model\Item::PRIVATE)) {
$public_message = true;
}
}
if (empty($items)) {
Logger::notice('No delivery data', ['command' => $cmd, 'uri-id' => $post_uriid, 'cid' => $contact_id]);
}
$owner = Model\User::getOwnerDataById($uid);
if (!DBA::isResult($owner)) {
self::setFailedQueue($cmd, $target_item);
return;
}
// We don't deliver our items to blocked, archived or pending contacts, and not to ourselves either
$contact = DBA::selectFirst('contact', [],
['id' => $contact_id, 'archive' => false, 'blocked' => false, 'pending' => false, 'self' => false]
);
if (!DBA::isResult($contact)) {
self::setFailedQueue($cmd, $target_item);
return;
}
if (Network::isUrlBlocked($contact['url'])) {
self::setFailedQueue($cmd, $target_item);
return;
}
$protocol = Model\GServer::getProtocol($contact['gsid'] ?? 0);
// Transmit via Diaspora if the thread had started as Diaspora post.
// Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
// This is done since the uri wouldn't match (Diaspora doesn't transmit it)
// Also transmit relayed posts from Diaspora contacts via Diaspora.
if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network'], $target_item['network']])) {
$contact['network'] = Protocol::DIASPORA;
}
// Ensure that local contacts are delivered locally
if (Model\Contact::isLocal($contact['url'])) {
$contact['network'] = Protocol::DFRN;
}
Logger::notice('Delivering', ['cmd' => $cmd, 'uri-id' => $post_uriid, 'followup' => $followup, 'network' => $contact['network']]);
switch ($contact['network']) {
case Protocol::DFRN:
self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup, $protocol);
break;
case Protocol::DIASPORA:
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
break;
case Protocol::MAIL:
self::deliverMail($cmd, $contact, $owner, $target_item, $thr_parent);
break;
default:
break;
}
return;
}
/**
* Increased the "failed" counter in the item delivery data
*
* @param string $cmd Command
* @param array $item Item array
*/
private static function setFailedQueue(string $cmd, array $item)
{
if (!in_array($cmd, [Delivery::POST, Delivery::POKE])) {
return;
}
Model\Post\DeliveryData::incrementQueueFailed($item['uri-id'] ?? $item['id']);
}
/**
* Deliver content via DFRN
*
* @param string $cmd Command
* @param array $contact Contact record of the receiver
* @param array $owner Owner record of the sender
* @param array $items Item record of the content and the parent
* @param array $target_item Item record of the content
* @param boolean $public_message Is the content public?
* @param boolean $top_level Is it a thread starter?
* @param boolean $followup Is it an answer to a remote post?
* @param int $server_protocol The protocol of the server
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup, $server_protocol)
{
// Transmit Diaspora reshares via Diaspora if the Friendica contact support Diaspora
if (Diaspora::isReshare($target_item['body']) && !empty(FContact::getByURL($contact['addr'], false))) {
Logger::info('Reshare will be transmitted via Diaspora', ['url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
return;
}
Logger::info('Deliver ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' via DFRN to ' . (($contact['addr'] ?? '') ?: $contact['url']));
if ($cmd == self::MAIL) {
$item = $target_item;
$item['body'] = Model\Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
$atom = DFRN::mail($item, $owner);
} elseif ($cmd == self::SUGGESTION) {
$item = $target_item;
$atom = DFRN::fsuggest($item, $owner);
DBA::delete('fsuggest', ['id' => $item['id']]);
} elseif ($cmd == self::RELOCATION) {
$atom = DFRN::relocate($owner, $owner['uid']);
} elseif ($followup) {
$msgitems = [$target_item];
$atom = DFRN::entries($msgitems, $owner);
} else {
if ($target_item['deleted']) {
$msgitems = [$target_item];
} else {
$msgitems = [];
foreach ($items as $item) {
// Only add the parent when we don't delete other items.
if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
$item["entry:comment-allow"] = true;
$item["entry:cid"] = ($top_level ? $contact['id'] : 0);
$msgitems[] = $item;
}
}
}
$atom = DFRN::entries($msgitems, $owner);
}
Logger::debug('Notifier entry: ' . $contact["url"] . ' ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' entry: ' . $atom);
// perform local delivery if we are on the same site
if (Model\Contact::isLocal($contact['url'])) {
$condition = ['nurl' => Strings::normaliseLink($contact['url']), 'self' => true];
$target_self = DBA::selectFirst('contact', ['uid'], $condition);
if (!DBA::isResult($target_self)) {
return;
}
$target_uid = $target_self['uid'];
// Check if the user has got this contact
$cid = Model\Contact::getIdForURL($owner['url'], $target_uid);
if (!$cid) {
// Otherwise there should be a public contact
$cid = Model\Contact::getIdForURL($owner['url']);
if (!$cid) {
return;
}
}
$target_importer = DFRN::getImporter($cid, $target_uid);
if (empty($target_importer)) {
// This should never happen
return;
}
DFRN::import($atom, $target_importer, Conversation::PARCEL_LOCAL_DFRN, Conversation::PUSH);
if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DFRN);
}
return;
}
$protocol = Model\Post\DeliveryData::DFRN;
// We don't have a relationship with contacts on a public post.
// Se we transmit with the new method and via Diaspora as a fallback
if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
// Transmit in public if it's a relay post
$public_dfrn = ($contact['contact-type'] == Model\Contact::TYPE_RELAY);
$deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
// We never spool failed relay deliveries
if ($public_dfrn) {
Logger::info('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
if (($deliver_status >= 200) && ($deliver_status <= 299)) {
Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
Model\GServer::setProtocol($contact['gsid'] ?? 0, $protocol);
} else {
Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
}
}
return;
}
if ((($deliver_status < 200) || ($deliver_status > 299)) && (empty($server_protocol) || ($server_protocol == Model\Post\DeliveryData::LEGACY_DFRN))) {
// Transmit via Diaspora if not possible via Friendica
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
return;
}
} elseif ($cmd != self::RELOCATION) {
// DFRN payload over Diaspora transport layer
$deliver_status = DFRN::transmit($owner, $contact, $atom);
if (($deliver_status < 200) && (empty($server_protocol) || ($server_protocol == Model\Post\DeliveryData::LEGACY_DFRN))) {
// Legacy DFRN
$deliver_status = DFRN::deliver($owner, $contact, $atom);
$protocol = Model\Post\DeliveryData::LEGACY_DFRN;
}
} else {
$deliver_status = DFRN::deliver($owner, $contact, $atom);
$protocol = Model\Post\DeliveryData::LEGACY_DFRN;
}
Logger::info('DFRN Delivery', ['cmd' => $cmd, 'url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id'], 'return' => $deliver_status]);
if (($deliver_status >= 200) && ($deliver_status <= 299)) {
// We successfully delivered a message, the contact is alive
Model\Contact::unmarkForArchival($contact);
Model\GServer::setProtocol($contact['gsid'] ?? 0, $protocol);
if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
}
} else {
// The message could not be delivered. We mark the contact as "dead"
Model\Contact::markForArchival($contact);
Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
}
}
}
/**
* Deliver content via Diaspora
*
* @param string $cmd Command
* @param array $contact Contact record of the receiver
* @param array $owner Owner record of the sender
* @param array $items Item record of the content and the parent
* @param array $target_item Item record of the content
* @param boolean $public_message Is the content public?
* @param boolean $top_level Is it a thread starter?
* @param boolean $followup Is it an answer to a remote post?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
{
// We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
$walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Model\User::ACCOUNT_TYPE_COMMUNITY);
if ($public_message) {
$loc = 'public batch ' . $contact['batch'];
} else {
$loc = $contact['addr'];
}
Logger::notice('Deliver via Diaspora', ['target' => $target_item['id'], 'guid' => $target_item['guid'], 'to' => $loc]);
if (DI::config()->get('system', 'dfrn_only') || !DI::config()->get('system', 'diaspora_enabled')) {
return;
}
if ($cmd == self::MAIL) {
Diaspora::sendMail($target_item, $owner, $contact);
return;
}
if ($cmd == self::SUGGESTION) {
return;
}
if (!$contact['pubkey'] && !$public_message) {
return;
}
if ($cmd == self::RELOCATION) {
$deliver_status = Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
} elseif ($target_item['deleted'] && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
// top-level retraction
Logger::log('diaspora retract: ' . $loc);
$deliver_status = Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
} elseif ($followup) {
// send comments and likes to owner to relay
Logger::log('diaspora followup: ' . $loc);
$deliver_status = Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
} elseif ($target_item['uri'] !== $target_item['parent-uri']) {
// we are the relay - send comments, likes and relayable_retractions to our conversants
Logger::log('diaspora relay: ' . $loc);
$deliver_status = Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
} elseif ($top_level && !$walltowall) {
// currently no workable solution for sending walltowall
Logger::log('diaspora status: ' . $loc);
$deliver_status = Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
} else {
Logger::log('Unknown mode ' . $cmd . ' for ' . $loc);
return;
}
if (($deliver_status >= 200) && ($deliver_status <= 299)) {
// We successfully delivered a message, the contact is alive
Model\Contact::unmarkForArchival($contact);
Model\GServer::setProtocol($contact['gsid'] ?? 0, Model\Post\DeliveryData::DIASPORA);
if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DIASPORA);
}
} else {
// The message could not be delivered. We mark the contact as "dead"
Model\Contact::markForArchival($contact);
// When it is delivered to the public endpoint, we do mark the relay contact for archival as well
if ($public_message) {
Relay::markForArchival($contact);
}
if (empty($contact['contact-type']) || ($contact['contact-type'] != Model\Contact::TYPE_RELAY)) {
Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
// defer message for redelivery
if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
}
} elseif (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
}
}
}
/**
* Deliver content via mail
*
* @param string $cmd Command
* @param array $contact Contact record of the receiver
* @param array $owner Owner record of the sender
* @param array $target_item Item record of the content
* @param array $thr_parent Item record of the direct parent in the thread
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function deliverMail($cmd, $contact, $owner, $target_item, $thr_parent)
{
if (DI::config()->get('system','dfrn_only')) {
return;
}
$addr = $contact['addr'];
if (!strlen($addr)) {
return;
}
if (!in_array($cmd, [self::POST, self::POKE])) {
return;
}
if ($target_item['verb'] != Activity::POST) {
return;
}
if (!empty($thr_parent['object'])) {
$data = json_decode($thr_parent['object'], true);
if (!empty($data['reply_to'])) {
$addr = $data['reply_to'][0]['mailbox'] . '@' . $data['reply_to'][0]['host'];
Logger::info('Use "reply-to" address of the thread parent', ['addr' => $addr]);
} elseif (!empty($data['from'])) {
$addr = $data['from'][0]['mailbox'] . '@' . $data['from'][0]['host'];
Logger::info('Use "from" address of the thread parent', ['addr' => $addr]);
}
}
$local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
if (!DBA::isResult($local_user)) {
return;
}
Logger::info('About to deliver via mail', ['guid' => $target_item['guid'], 'to' => $addr]);
$reply_to = '';
$mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
$reply_to = $mailacct['reply_to'];
}
$subject = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : DI::l10n()->t("\x28no subject\x29"));
// only expose our real email address to true friends
if (($contact['rel'] == Model\Contact::FRIEND) && !$contact['blocked']) {
if ($reply_to) {
$headers = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to . '>' . "\n";
$headers .= 'Sender: ' . $local_user['email'] . "\n";
} else {
$headers = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $local_user['email'] . '>' . "\n";
}
} else {
$sender = DI::config()->get('config', 'sender_email', 'noreply@' . DI::baseUrl()->getHostname());
$headers = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <' . $sender . '>' . "\n";
}
$headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
if ($target_item['uri'] !== $target_item['parent-uri']) {
$headers .= 'References: <' . Email::iri2msgid($target_item['parent-uri']) . '>';
// Export more references on deeper nested threads
if (($target_item['thr-parent'] != '') && ($target_item['thr-parent'] != $target_item['parent-uri'])) {
$headers .= ' <' . Email::iri2msgid($target_item['thr-parent']) . '>';
}
$headers .= "\n";
if (empty($target_item['title'])) {
$condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
$title = Model\Post::selectFirst(['title'], $condition);
if (DBA::isResult($title) && ($title['title'] != '')) {
$subject = $title['title'];
} else {
$condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
$title = Model\Post::selectFirst(['title'], $condition);
if (DBA::isResult($title) && ($title['title'] != '')) {
$subject = $title['title'];
}
}
}
if (strncasecmp($subject, 'RE:', 3)) {
$subject = 'Re: ' . $subject;
}
}
Email::send($addr, $subject, $headers, $target_item);
Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::MAIL);
Logger::info('Delivered via mail', ['guid' => $target_item['guid'], 'to' => $addr, 'subject' => $subject]);
}
}