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friendica/include/notifier.php

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<?php
require_once("boot.php");
require_once('include/queue_fn.php');
/*
* This file was at one time responsible for doing all deliveries, but this caused
* big problems on shared hosting systems, where the process might get killed by the
* hosting provider and nothing would get delivered.
* It now only delivers one message under certain cases, and invokes a queued
* delivery mechanism (include/deliver.php) to deliver individual contacts at
* controlled intervals.
* This has a much better chance of surviving random processes getting killed
* by the hosting provider.
* A lot of this code is duplicated in include/deliver.php until we have time to go back
* and re-structure the delivery procedure based on the obstacles that have been thrown at
* us by hosting providers.
*/
function notifier_run($argv, $argc){
global $a, $db;
if(is_null($a)){
$a = new App;
}
if(is_null($db)) {
@include(".htconfig.php");
require_once("dba.php");
$db = new dba($db_host, $db_user, $db_pass, $db_data);
unset($db_host, $db_user, $db_pass, $db_data);
}
require_once("session.php");
require_once("datetime.php");
require_once('include/items.php');
require_once('include/bbcode.php');
load_config('config');
load_config('system');
load_hooks();
if($argc < 3)
return;
$a->set_baseurl(get_config('system','url'));
logger('notifier: invoked: ' . print_r($argv,true));
$cmd = $argv[1];
switch($cmd) {
case 'mail':
default:
$item_id = intval($argv[2]);
if(! $item_id){
return;
}
break;
}
$expire = false;
$mail = false;
$fsuggest = false;
$top_level = false;
$recipients = array();
$url_recipients = array();
$normal_mode = true;
if($cmd === 'mail') {
$normal_mode = false;
$mail = true;
$message = q("SELECT * FROM `mail` WHERE `id` = %d LIMIT 1",
intval($item_id)
);
if(! count($message)){
return;
}
$uid = $message[0]['uid'];
$recipients[] = $message[0]['contact-id'];
$item = $message[0];
}
elseif($cmd === 'expire') {
$normal_mode = false;
$expire = true;
$items = q("SELECT * FROM `item` WHERE `uid` = %d AND `wall` = 1
AND `deleted` = 1 AND `changed` > UTC_TIMESTAMP() - INTERVAL 10 MINUTE",
intval($item_id)
);
$uid = $item_id;
$item_id = 0;
if(! count($items))
return;
}
elseif($cmd === 'suggest') {
$normal_mode = false;
$fsuggest = true;
$suggest = q("SELECT * FROM `fsuggest` WHERE `id` = %d LIMIT 1",
intval($item_id)
);
if(! count($suggest))
return;
$uid = $suggest[0]['uid'];
$recipients[] = $suggest[0]['cid'];
$item = $suggest[0];
}
else {
// find ancestors
$r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
intval($item_id)
);
if((! count($r)) || (! intval($r[0]['parent']))) {
return;
}
$target_item = $r[0];
$parent_id = intval($r[0]['parent']);
$uid = $r[0]['uid'];
$updated = $r[0]['edited'];
if(! $parent_id)
return;
$items = q("SELECT `item`.*, `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
FROM `item` LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id` WHERE `parent` = %d ORDER BY `id` ASC",
intval($parent_id)
);
if(! count($items)) {
return;
}
// avoid race condition with deleting entries
if($items[0]['deleted']) {
foreach($items as $item)
$item['deleted'] = 1;
}
if((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
logger('notifier: top level post');
$top_level = true;
}
}
$r = q("SELECT `contact`.*, `user`.`pubkey` AS `upubkey`, `user`.`prvkey` AS `uprvkey`,
`user`.`timezone`, `user`.`nickname`, `user`.`sprvkey`, `user`.`spubkey`,
`user`.`page-flags`, `user`.`prvnets`
FROM `contact` LEFT JOIN `user` ON `user`.`uid` = `contact`.`uid`
WHERE `contact`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
intval($uid)
);
if(! count($r))
return;
$owner = $r[0];
$walltowall = ((($top_level) && ($owner['id'] != $items[0]['contact-id'])) ? true : false);
$hub = get_config('system','huburl');
// If this is a public conversation, notify the feed hub
$public_message = true;
// fill this in with a single salmon slap if applicable
$slap = '';
if(! ($mail || $fsuggest)) {
require_once('include/group.php');
$parent = $items[0];
// 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.
// expire sends an entire group of expire messages and cannot be forwarded.
// However the conversation owner will be a part of the conversation and will
// be notified during this run.
// Other DFRN conversation members will be alerted during polled updates.
// Diaspora members currently are not notified of expirations, and other networks have
// either limited or no ability to process deletions. We should at least fix Diaspora
// by stringing togther an array of retractions and sending them onward.
$localhost = $a->get_hostname();
if(strpos($localhost,':'))
$localhost = substr($localhost,0,strpos($localhost,':'));
/**
*
* Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
* have been known to cause runaway conditions which affected several servers, along with
* permissions issues.
*
*/
$relay_to_owner = false;
if((! $top_level) && ($parent['wall'] == 0) && (! $expire) && (stristr($target_item['uri'],$localhost))) {
$relay_to_owner = true;
}
if(($cmd === 'uplink') && (intval($parent['forum_mode'])) && (! $top_level)) {
$relay_to_owner = true;
}
// until the 'origin' flag has been in use for several months
// we will just use it as a fallback test
// later we will be able to use it as the primary test of whether or not to relay.
if(! $target_item['origin'])
$relay_to_owner = false;
if($parent['origin'])
$relay_to_owner = false;
if($relay_to_owner) {
logger('notifier: followup', LOGGER_DEBUG);
// local followup to remote post
$followup = true;
$public_message = false; // not public
$conversant_str = dbesc($parent['contact-id']);
}
else {
$followup = false;
// don't send deletions onward for other people's stuff
if($target_item['deleted'] && (! intval($target_item['wall']))) {
logger('notifier: ignoring delete notification for non-wall item');
return;
}
if((strlen($parent['allow_cid']))
|| (strlen($parent['allow_gid']))
|| (strlen($parent['deny_cid']))
|| (strlen($parent['deny_gid']))) {
$public_message = false; // private recipients, not public
}
$allow_people = expand_acl($parent['allow_cid']);
$allow_groups = expand_groups(expand_acl($parent['allow_gid']));
$deny_people = expand_acl($parent['deny_cid']);
$deny_groups = expand_groups(expand_acl($parent['deny_gid']));
// if our parent is a forum, uplink to the origonal author causing
// a delivery fork
if(intval($parent['forum_mode']) && (! $top_level) && ($cmd !== 'uplink')) {
proc_run('php','include/notifier','uplink',$item_id);
}
$conversants = array();
foreach($items as $item) {
$recipients[] = $item['contact-id'];
$conversants[] = $item['contact-id'];
// pull out additional tagged people to notify (if public message)
if($public_message && strlen($item['inform'])) {
$people = explode(',',$item['inform']);
foreach($people as $person) {
if(substr($person,0,4) === 'cid:') {
$recipients[] = intval(substr($person,4));
$conversants[] = intval(substr($person,4));
}
else {
$url_recipients[] = substr($person,4);
}
}
}
}
logger('notifier: url_recipients' . print_r($url_recipients,true));
$conversants = array_unique($conversants);
$recipients = array_unique(array_merge($recipients,$allow_people,$allow_groups));
$deny = array_unique(array_merge($deny_people,$deny_groups));
$recipients = array_diff($recipients,$deny);
$conversant_str = dbesc(implode(', ',$conversants));
}
$r = q("SELECT * FROM `contact` WHERE `id` IN ( $conversant_str ) AND `blocked` = 0 AND `pending` = 0");
if(count($r))
$contacts = $r;
}
$feed_template = get_markup_template('atom_feed.tpl');
$mail_template = get_markup_template('atom_mail.tpl');
$atom = '';
$slaps = array();
$hubxml = feed_hublinks();
$birthday = feed_birthday($owner['uid'],$owner['timezone']);
if(strlen($birthday))
$birthday = '<dfrn:birthday>' . xmlify($birthday) . '</dfrn:birthday>';
$atom .= replace_macros($feed_template, array(
'$version' => xmlify(FRIENDICA_VERSION),
'$feed_id' => xmlify($a->get_baseurl() . '/profile/' . $owner['nickname'] ),
'$feed_title' => xmlify($owner['name']),
'$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', $updated . '+00:00' , ATOM_TIME)) ,
'$hub' => $hubxml,
'$salmon' => '', // private feed, we don't use salmon here
'$name' => xmlify($owner['name']),
'$profile_page' => xmlify($owner['url']),
'$photo' => xmlify($owner['photo']),
'$thumb' => xmlify($owner['thumb']),
'$picdate' => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
'$uridate' => xmlify(datetime_convert('UTC','UTC',$owner['uri-date'] . '+00:00' , ATOM_TIME)) ,
'$namdate' => xmlify(datetime_convert('UTC','UTC',$owner['name-date'] . '+00:00' , ATOM_TIME)) ,
'$birthday' => $birthday
));
if($mail) {
$public_message = false; // mail is not public
$body = fix_private_photos($item['body'],$owner['uid']);
$atom .= replace_macros($mail_template, array(
'$name' => xmlify($owner['name']),
'$profile_page' => xmlify($owner['url']),
'$thumb' => xmlify($owner['thumb']),
'$item_id' => xmlify($item['uri']),
'$subject' => xmlify($item['title']),
'$created' => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
'$content' => xmlify($body),
'$parent_id' => xmlify($item['parent-uri'])
));
}
elseif($fsuggest) {
$public_message = false; // suggestions are not public
$sugg_template = get_markup_template('atom_suggest.tpl');
$atom .= replace_macros($sugg_template, array(
'$name' => xmlify($item['name']),
'$url' => xmlify($item['url']),
'$photo' => xmlify($item['photo']),
'$request' => xmlify($item['request']),
'$note' => xmlify($item['note'])
));
// We don't need this any more
q("DELETE FROM `fsuggest` WHERE `id` = %d LIMIT 1",
intval($item['id'])
);
}
else {
if($followup) {
foreach($items as $item) { // there is only one item
if(! $item['parent'])
continue;
if($item['id'] == $item_id) {
logger('notifier: followup: item: ' . print_r($item,true), LOGGER_DATA);
$slap = atom_entry($item,'html',$owner,$owner,false);
$atom .= atom_entry($item,'text',$owner,$owner,false);
}
}
}
else {
foreach($items as $item) {
if(! $item['parent'])
continue;
// private emails may be in included in public conversations. Filter them.
if(($public_message) && $item['private'])
continue;
$contact = get_item_contact($item,$contacts);
if(! $contact)
continue;
if($normal_mode) {
// we only need the current item, but include the parent because without it
// older sites without a corresponding dfrn_notify change may do the wrong thing.
if($item_id == $item['id'] || $item['id'] == $item['parent'])
$atom .= atom_entry($item,'text',$contact,$owner,true);
}
else
$atom .= atom_entry($item,'text',$contact,$owner,true);
if(($top_level) && ($public_message) && ($item['author-link'] === $item['owner-link']) && (! $expire))
$slaps[] = atom_entry($item,'html',$contact,$owner,true);
}
}
}
$atom .= '</feed>' . "\r\n";
logger('notifier: ' . $atom, LOGGER_DATA);
logger('notifier: slaps: ' . print_r($slaps,true), LOGGER_DATA);
// If this is a public message and pubmail is set on the parent, include all your email contacts
$mail_disabled = ((function_exists('imap_open') && (! get_config('system','imap_disabled'))) ? 0 : 1);
if(! $mail_disabled) {
if((! strlen($target_item['allow_cid'])) && (! strlen($target_item['allow_gid']))
&& (! strlen($target_item['deny_cid'])) && (! strlen($target_item['deny_gid']))
&& (intval($target_item['pubmail']))) {
$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `network` = '%s'",
intval($uid),
dbesc(NETWORK_MAIL)
);
if(count($r)) {
foreach($r as $rr)
$recipients[] = $rr['id'];
}
}
}
if($followup)
$recip_str = $parent['contact-id'];
else
$recip_str = implode(', ', $recipients);
$r = q("SELECT * FROM `contact` WHERE `id` IN ( %s ) AND `blocked` = 0 AND `pending` = 0 ",
dbesc($recip_str)
);
require_once('include/salmon.php');
$interval = ((get_config('system','delivery_interval') === false) ? 2 : intval(get_config('system','delivery_interval')));
// delivery loop
if(count($r)) {
foreach($r as $contact) {
if((! $mail) && (! $fsuggest) && (! $followup) && (! $contact['self'])) {
if(($contact['network'] === NETWORK_DIASPORA) && ($public_message))
continue;
q("insert into deliverq ( `cmd`,`item`,`contact` ) values ('%s', %d, %d )",
dbesc($cmd),
intval($item_id),
intval($contact['id'])
);
}
}
foreach($r as $contact) {
if($contact['self'])
continue;
// potentially more than one recipient. Start a new process and space them out a bit.
// we will deliver single recipient types of message and email receipients here.
if((! $mail) && (! $fsuggest) && (! $followup)) {
proc_run('php','include/delivery.php',$cmd,$item_id,$contact['id']);
if($interval)
@time_sleep_until(microtime(true) + (float) $interval);
continue;
}
$deliver_status = 0;
logger("main delivery by notifier: followup=$followup mail=$mail fsuggest=$fsuggest");
switch($contact['network']) {
case NETWORK_DFRN:
// perform local delivery if we are on the same site
$basepath = implode('/', array_slice(explode('/',$contact['url']),0,3));
if(link_compare($basepath,$a->get_baseurl())) {
$nickname = basename($contact['url']);
if($contact['issued-id'])
$sql_extra = sprintf(" AND `dfrn-id` = '%s' ", dbesc($contact['issued-id']));
else
$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($contact['dfrn-id']));
$x = q("SELECT `contact`.*, `contact`.`uid` AS `importer_uid`,
`contact`.`pubkey` AS `cpubkey`,
`contact`.`prvkey` AS `cprvkey`,
`contact`.`thumb` AS `thumb`,
`contact`.`url` as `url`,
`contact`.`name` as `senderName`,
`user`.*
FROM `contact`
LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0
AND `contact`.`network` = '%s' AND `user`.`nickname` = '%s'
$sql_extra
AND `user`.`account_expired` = 0 LIMIT 1",
dbesc(NETWORK_DFRN),
dbesc($nickname)
);
if(count($x)) {
require_once('library/simplepie/simplepie.inc');
logger('mod-delivery: local delivery');
local_delivery($x[0],$atom);
break;
}
}
logger('notifier: dfrndelivery: ' . $contact['name']);
$deliver_status = dfrn_deliver($owner,$contact,$atom);
logger('notifier: dfrn_delivery returns ' . $deliver_status);
if($deliver_status == (-1)) {
logger('notifier: delivery failed: queuing message');
// queue message for redelivery
add_to_queue($contact['id'],NETWORK_DFRN,$atom);
}
break;
case NETWORK_OSTATUS:
// Do not send to otatus if we are not configured to send to public networks
if($owner['prvnets'])
break;
if(get_config('system','ostatus_disabled') || get_config('system','dfrn_only'))
break;
if($followup && $contact['notify']) {
logger('notifier: slapdelivery: ' . $contact['name']);
$deliver_status = slapper($owner,$contact['notify'],$slap);
if($deliver_status == (-1)) {
// queue message for redelivery
add_to_queue($contact['id'],NETWORK_OSTATUS,$slap);
}
}
else {
// only send salmon if public - e.g. if it's ok to notify
// a public hub, it's ok to send a salmon
if((count($slaps)) && ($public_message) && (! $expire)) {
logger('notifier: slapdelivery: ' . $contact['name']);
foreach($slaps as $slappy) {
if($contact['notify']) {
$deliver_status = slapper($owner,$contact['notify'],$slappy);
if($deliver_status == (-1)) {
// queue message for redelivery
add_to_queue($contact['id'],NETWORK_OSTATUS,$slappy);
}
}
}
}
}
break;
case NETWORK_MAIL:
if(get_config('system','dfrn_only'))
break;
// WARNING: does not currently convert to RFC2047 header encodings, etc.
$addr = $contact['addr'];
if(! strlen($addr))
break;
if($cmd === 'wall-new' || $cmd === 'comment-new') {
$it = null;
if($cmd === 'wall-new')
$it = $items[0];
else {
$r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($argv[2]),
intval($uid)
);
if(count($r))
$it = $r[0];
}
if(! $it)
break;
$local_user = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
intval($uid)
);
if(! count($local_user))
break;
$reply_to = '';
$r1 = q("SELECT * FROM `mailacct` WHERE `uid` = %d LIMIT 1",
intval($uid)
);
if($r1 && $r1[0]['reply_to'])
$reply_to = $r1[0]['reply_to'];
$subject = (($it['title']) ? $it['title'] : t("\x28no subject\x29")) ;
// only expose our real email address to true friends
if($contact['rel'] == CONTACT_IS_FRIEND)
$headers = 'From: ' . $local_user[0]['username'] . ' <' . $local_user[0]['email'] . '>' . "\n";
else
$headers = 'From: ' . $local_user[0]['username'] . ' <' . t('noreply') . '@' . $a->get_hostname() . '>' . "\n";
if($reply_to)
$headers .= 'Reply-to: ' . $reply_to . "\n";
$headers .= 'Message-id: <' . $it['uri'] . '>' . "\n";
if($it['uri'] !== $it['parent-uri']) {
$header .= 'References: <' . $it['parent-uri'] . '>' . "\n";
if(! strlen($it['title'])) {
$r = q("SELECT `title` FROM `item` WHERE `parent-uri` = '%s' LIMIT 1",
dbesc($it['parent-uri'])
);
if(count($r)) {
$subtitle = $r[0]['title'];
if($subtitle) {
if(strncasecmp($subtitle,'RE:',3))
$subject = $subtitle;
else
$subject = 'Re: ' . $subtitle;
}
}
}
}
$headers .= 'MIME-Version: 1.0' . "\n";
$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
$html = prepare_body($it);
$message = '<html><body>' . $html . '</body></html>';
logger('notifier: email delivery to ' . $addr);
mail($addr, $subject, $message, $headers);
}
break;
case NETWORK_DIASPORA:
require_once('include/diaspora.php');
if(get_config('system','dfrn_only') || (! get_config('system','diaspora_enabled')))
break;
if($mail) {
diaspora_send_mail($item,$owner,$contact);
break;
}
if(! $normal_mode)
break;
// special handling for followup to public post
// all other public posts processed as public batches further below
if($public_message) {
if($followup)
diaspora_send_followup($target_item,$owner,$contact, true);
break;
}
if(! $contact['pubkey'])
break;
if($target_item['verb'] === ACTIVITY_DISLIKE) {
// unsupported
break;
}
elseif(($target_item['deleted']) && ($target_item['verb'] !== ACTIVITY_LIKE)) {
// diaspora delete,
diaspora_send_retraction($target_item,$owner,$contact);
break;
}
elseif($followup) {
// send comments, likes and retractions of likes to owner to relay
diaspora_send_followup($target_item,$owner,$contact);
break;
}
elseif($target_item['parent'] != $target_item['id']) {
// we are the relay - send comments, likes and unlikes to our conversants
diaspora_send_relay($target_item,$owner,$contact);
break;
}
elseif(($top_level) && (! $walltowall)) {
// currently no workable solution for sending walltowall
diaspora_send_status($target_item,$owner,$contact);
break;
}
break;
case NETWORK_FEED:
case NETWORK_FACEBOOK:
if(get_config('system','dfrn_only'))
break;
default:
break;
}
}
}
// send additional slaps to mentioned remote tags (@foo@example.com)
if($slap && count($url_recipients) && ($followup || $top_level) && $public_message && (! $expire)) {
if(! get_config('system','dfrn_only')) {
foreach($url_recipients as $url) {
if($url) {
logger('notifier: urldelivery: ' . $url);
$deliver_status = slapper($owner,$url,$slap);
// TODO: redeliver/queue these items on failure, though there is no contact record
}
}
}
}
if($public_message) {
$r1 = q("SELECT DISTINCT(`batch`), `id`, `name`,`network` FROM `contact` WHERE `network` = '%s'
AND `uid` = %d AND `rel` != %d group by `batch` ORDER BY rand() ",
dbesc(NETWORK_DIASPORA),
intval($owner['uid']),
intval(CONTACT_IS_SHARING)
);
$r2 = q("SELECT `id`, `name`,`network` FROM `contact`
WHERE `network` = '%s' AND `uid` = %d AND `blocked` = 0 AND `pending` = 0
AND `rel` != %d order by rand() ",
dbesc(NETWORK_DFRN),
intval($owner['uid']),
intval(CONTACT_IS_SHARING)
);
$r = array_merge($r2,$r1);
if(count($r)) {
logger('pubdeliver: ' . print_r($r,true), LOGGER_DEBUG);
// throw everything into the queue in case we get killed
foreach($r as $rr) {
if((! $mail) && (! $fsuggest) && (! $followup)) {
q("insert into deliverq ( `cmd`,`item`,`contact` ) values ('%s', %d, %d )",
dbesc($cmd),
intval($item_id),
intval($rr['id'])
);
}
}
foreach($r as $rr) {
// except for Diaspora batch jobs
// Don't deliver to folks who have already been delivered to
if(($rr['network'] !== NETWORK_DIASPORA) && (in_array($rr['id'],$conversants))) {
logger('notifier: already delivered id=' . $rr['id']);
continue;
}
if((! $mail) && (! $fsuggest) && (! $followup)) {
logger('notifier: delivery agent: ' . $rr['name'] . ' ' . $rr['id']);
proc_run('php','include/delivery.php',$cmd,$item_id,$rr['id']);
if($interval)
@time_sleep_until(microtime(true) + (float) $interval);
}
}
}
if(strlen($hub)) {
$hubs = explode(',', $hub);
if(count($hubs)) {
foreach($hubs as $h) {
$h = trim($h);
if(! strlen($h))
continue;
$params = 'hub.mode=publish&hub.url=' . urlencode($a->get_baseurl() . '/dfrn_poll/' . $owner['nickname'] );
post_url($h,$params);
logger('pubsub: publish: ' . $h . ' ' . $params . ' returned ' . $a->get_curl_code());
if(count($hubs) > 1)
sleep(7); // try and avoid multiple hubs responding at precisely the same time
}
}
}
}
if($normal_mode)
call_hooks('notifier_normal',$target_item);
call_hooks('notifier_end',$target_item);
return;
}
if (array_search(__file__,get_included_files())===0){
notifier_run($argv,$argc);
killme();
}
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