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
/**
* @file src/Worker/Delivery.php
*/
namespace Friendica\Worker;
use Friendica\BaseObject;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\System;
use Friendica\Database\DBA;
use Friendica\Model\Contact;
use Friendica\Model\Item;
use Friendica\Model\Queue;
use Friendica\Model\User;
use Friendica\Protocol\DFRN;
use Friendica\Protocol\Diaspora;
use Friendica\Protocol\Email;
require_once 'include/items.php';
class Delivery extends BaseObject
{
const MAIL = 'mail';
const SUGGESTION = 'suggest';
const RELOCATION = 'relocate';
const DELETION = 'drop';
const POST = 'wall-new';
const COMMENT = 'comment-new';
const REMOVAL = 'removeme';
public static function execute($cmd, $item_id, $contact_id)
{
logger('Invoked: ' . $cmd . ': ' . $item_id . ' to ' . $contact_id, LOGGER_DEBUG);
$top_level = false;
$followup = false;
$public_message = false;
if ($cmd == self::MAIL) {
$target_item = DBA::selectFirst('mail', [], ['id' => $item_id]);
if (!DBA::isResult($target_item)) {
return;
}
$uid = $target_item['uid'];
$items = [];
} elseif ($cmd == self::SUGGESTION) {
$target_item = DBA::selectFirst('fsuggest', [], ['id' => $item_id]);
if (!DBA::isResult($target_item)) {
return;
}
$uid = $target_item['uid'];
} elseif ($cmd == self::RELOCATION) {
$uid = $item_id;
} else {
$item = Item::selectFirst(['parent'], ['id' => $item_id]);
if (!DBA::isResult($item) || empty($item['parent'])) {
return;
}
$parent_id = intval($item['parent']);
$condition = ['id' => [$item_id, $parent_id], 'visible' => true, 'moderated' => false];
$params = ['order' => ['id']];
$itemdata = Item::select([], $condition, $params);
$items = [];
while ($item = Item::fetch($itemdata)) {
if ($item['id'] == $parent_id) {
$parent = $item;
}
if ($item['id'] == $item_id) {
$target_item = $item;
}
$items[] = $item;
}
DBA::close($itemdata);
$uid = $target_item['contact-uid'];
// avoid race condition with deleting entries
if ($items[0]['deleted']) {
foreach ($items as $item) {
$item['deleted'] = 1;
}
}
// When commenting too fast after delivery, a post wasn't recognized as top level post.
// The count then showed more than one entry. The additional check should help.
// The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
if ((($parent['id'] == $item_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
logger('Top level post');
$top_level = true;
}
// 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.
$localhost = self::getApp()->get_hostname();
if (strpos($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('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"]) {
$public_message = true;
}
}
if (empty($items)) {
logger('No delivery data for ' . $cmd . ' - Item ID: ' .$item_id . ' - Contact ID: ' . $contact_id);
}
$owner = User::getOwnerDataById($uid);
if (!DBA::isResult($owner)) {
return;
}
// We don't deliver our items to blocked or pending contacts, and not to ourselves either
$contact = DBA::selectFirst('contact', [],
['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
);
if (!DBA::isResult($contact)) {
return;
}
// Transmit via Diaspora if the thread had started as Diaspora post
// This is done since the uri wouldn't match (Diaspora doesn't transmit it)
if (isset($parent) && ($parent['network'] == NETWORK_DIASPORA) && ($contact['network'] == NETWORK_DFRN)) {
$contact['network'] = NETWORK_DIASPORA;
}
logger("Delivering " . $cmd . " followup=$followup - via network " . $contact['network']);
switch ($contact['network']) {
case NETWORK_DFRN:
self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
break;
case NETWORK_DIASPORA:
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
break;
case NETWORK_OSTATUS:
// Do not send to otatus if we are not configured to send to public networks
if ($owner['prvnets']) {
break;
}
if (Config::get('system','ostatus_disabled') || Config::get('system','dfrn_only')) {
break;
}
// There is currently no code here to distribute anything to OStatus.
// This is done in "notifier.php" (See "url_recipients" and "push_notify")
break;
case NETWORK_MAIL:
self::deliverMail($cmd, $contact, $owner, $target_item);
break;
default:
break;
}
return;
}
/**
* @brief 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 $followup Is it an answer to a remote post?
*/
private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
{
logger('Deliver ' . $target_item["guid"] . ' via DFRN to ' . (empty($contact['addr']) ? $contact['url'] : $contact['addr']));
if ($cmd == self::MAIL) {
$item = $target_item;
$item['body'] = Item::fixPrivatePhotos($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 {
$msgitems = [];
foreach ($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('Notifier entry: ' . $contact["url"] . ' ' . $target_item["guid"] . ' entry: ' . $atom, LOGGER_DATA);
$basepath = implode('/', array_slice(explode('/', $contact['url']), 0, 3));
// perform local delivery if we are on the same site
if (link_compare($basepath, System::baseUrl())) {
$condition = ['nurl' => normalise_link($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
$cid = Contact::getIdForURL($owner['url'], $target_uid);
if (!$cid) {
// Otherwise there should be a public contact
$cid = Contact::getIdForURL($owner['url']);
if (!$cid) {
return;
}
}
// We now have some contact, so we fetch it
$target_importer = DBA::fetchFirst("SELECT *, `name` as `senderName`
FROM `contact`
WHERE NOT `blocked` AND `id` = ? LIMIT 1",
$cid);
// This should never fail
if (!DBA::isResult($target_importer)) {
return;
}
$user = DBA::selectFirst('user', [], ['uid' => $target_uid]);
$target_importer = array_merge($target_importer, $user);
// Set the user id. This is important if this is a public contact
$target_importer['importer_uid'] = $target_uid;
DFRN::import($atom, $target_importer);
return;
}
// We don't have a relationship with contacts on a public post.
// Se we transmit with the new method and via Diaspora as a fallback
if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
// Transmit in public if it's a relay post
$public_dfrn = ($contact['contact-type'] == ACCOUNT_TYPE_RELAY);
$deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
// We never spool failed relay deliveries
if ($public_dfrn) {
logger('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
return;
}
if (($deliver_status < 200) || ($deliver_status > 299)) {
// Transmit via Diaspora if not possible via Friendica
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
return;
}
} else {
$deliver_status = DFRN::deliver($owner, $contact, $atom);
}
logger('Delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
if ($deliver_status < 0) {
logger('Delivery failed: queuing message ' . $target_item["guid"] );
Queue::add($contact['id'], NETWORK_DFRN, $atom, false, $target_item['guid']);
}
if (($deliver_status >= 200) && ($deliver_status <= 299)) {
// We successfully delivered a message, the contact is alive
Contact::unmarkForArchival($contact);
} else {
// The message could not be delivered. We mark the contact as "dead"
Contact::markForArchival($contact);
// Transmit via Diaspora when all other methods (legacy DFRN and new one) are failing.
// This is a fallback for systems that don't know the new methods.
self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
}
}
/**
* @brief 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 $followup Is it an answer to a remote post?
*/
private static function deliverDiaspora($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'] != ACCOUNT_TYPE_COMMUNITY);
if ($public_message) {
$loc = 'public batch ' . $contact['batch'];
} else {
$loc = $contact['addr'];
}
logger('Deliver ' . $target_item["guid"] . ' via Diaspora to ' . $loc);
if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
return;
}
if ($cmd == self::MAIL) {
Diaspora::sendMail($target_item, $owner, $contact);
return;
}
if ($cmd == self::SUGGESTION) {
return;
}
if (!$contact['pubkey'] && !$public_message) {
return;
}
if (($target_item['deleted']) && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
// top-level retraction
logger('diaspora retract: ' . $loc);
Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
return;
} elseif ($cmd == self::RELOCATION) {
Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
return;
} elseif ($followup) {
// send comments and likes to owner to relay
logger('diaspora followup: ' . $loc);
Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
return;
} elseif ($target_item['uri'] !== $target_item['parent-uri']) {
// we are the relay - send comments, likes and relayable_retractions to our conversants
logger('diaspora relay: ' . $loc);
Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
return;
} elseif ($top_level && !$walltowall) {
// currently no workable solution for sending walltowall
logger('diaspora status: ' . $loc);
Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
return;
}
logger('Unknown mode ' . $cmd . ' for ' . $loc);
}
/**
* @brief 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 $target_item Item record of the content
*/
private static function deliverMail($cmd, $contact, $owner, $target_item)
{
if (Config::get('system','dfrn_only')) {
return;
}
// WARNING: does not currently convert to RFC2047 header encodings, etc.
$addr = $contact['addr'];
if (!strlen($addr)) {
return;
}
if (!in_array($cmd, [self::POST, self::COMMENT])) {
return;
}
$local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
if (!DBA::isResult($local_user)) {
return;
}
logger('Deliver ' . $target_item["guid"] . ' via mail to ' . $contact['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($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
// only expose our real email address to true friends
if (($contact['rel'] == CONTACT_IS_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 {
$headers = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . self::getApp()->get_hostname() . '>' . "\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"]) . ">";
// If Threading is enabled, write down the correct parent
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 = Item::selectFirst(['title'], $condition);
if (DBA::isResult($title) && ($title['title'] != '')) {
$subject = $title['title'];
} else {
$condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
$title = Item::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);
}
}