break up delivery into per-person processes

3 files changed, 501 insertions, 113 deletions

diff --git a/include/delivery.php b/include/delivery.php
new file mode 100644
index 000000000..be4f3978c
--- /dev/null
+++ b/include/delivery.php
@@ -0,0 +1,420 @@
+<?php
+require_once("boot.php");
+
+function delivery_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, $db_data);
+	}
+
+	require_once("session.php");
+	require_once("datetime.php");
+	require_once('include/items.php');
+	require_once('include/bbcode.php');
+	require_once('include/diaspora.php');
+
+	load_config('config');
+	load_config('system');
+
+	load_hooks();
+
+	if($argc < 3)
+		return;
+
+	$a->set_baseurl(get_config('system','url'));
+
+	logger('delivery: invoked: ' . print_r($argv,true));
+
+	$cmd        = $argv[1];
+	$item_id    = intval($argv[2]);
+	$contact_id = intval($argv[3]);
+
+	if((! $item_id) || (! $contact_id))
+		return;
+
+	$expire = false;
+	$top_level = false;
+	$recipients = array();
+	$url_recipients = array();
+
+	$normal_mode = true;
+
+	$recipients[] = $contact_id;
+
+	if($cmd === 'expire') {
+		$normal_mode = false;
+		$expire = true;
+		$items = q("SELECT * FROM `item` WHERE `uid` = %d AND `wall` = 1 
+			AND `deleted` = 1 AND `changed` > UTC_TIMESTAMP - INTERVAL 30 MINUTE",
+			intval($item_id)
+		);
+		$uid = $item_id;
+		$item_id = 0;
+		if(! count($items))
+			return;
+	}
+	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'];
+
+		$items = q("SELECT * FROM `item` WHERE `parent` = %d ORDER BY `id` ASC",
+			intval($parent_id)
+		);
+
+		if(! count($items)) {
+			return;
+		}
+
+		$icontacts = q("SELECT * FROM `contact` WHERE `id` IN ( SELECT distinct(`contact-id`) FROM `item` where `parent` = %d ) ",
+			intval($parent_id)
+		);
+		if(! count($icontacts))
+			return;
+
+
+		// avoid race condition with deleting entries
+
+		if($items[0]['deleted']) {
+			foreach($items as $item)
+				$item['deleted'] = 1;
+		}
+
+		if(count($items) == 1 && $items[0]['uri'] === $items[0]['parent-uri'])
+			$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];
+
+	$public_message = true;
+
+	// fill this in with a single salmon slap if applicable
+	$slap = '';
+
+	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 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) && (! $expire) && (stristr($target_item['uri'],$localhost))) {
+		logger('relay denied for delivery agent.');
+
+		/* no relay allowed for direct contact delivery */
+		return;
+	}
+
+	if((strlen($parent['allow_cid'])) 
+		|| (strlen($parent['allow_gid'])) 
+		|| (strlen($parent['deny_cid'])) 
+		|| (strlen($parent['deny_gid']))) {
+		$public_message = false; // private recipients, not public
+	}
+
+	$conversant_str = intval($contact_id);
+
+	$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `blocked` = 0 AND `pending` = 0",
+		intval($contact_id)
+	);
+
+	if(count($r))
+		$contact = $r[0];
+	
+
+	$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(
+			'$version'      => xmlify(FRIENDIKA_VERSION),
+			'$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'     => $birthday
+	));
+
+	foreach($items as $item) {
+		if(! $item['parent'])
+			continue;
+
+		// private emails may be in included in public conversations. Filter them.
+		if(($public_message) && $item['private'])
+			continue;
+
+		$item_contact = get_item_contact($item,$icontacts);
+		if(! $item_contact)
+			continue;
+
+		$atom .= atom_entry($item,'text',$item_contact,$owner,true);
+
+		if(($top_level) && ($public_message) && ($item['author-link'] === $item['owner-link']) && (! $expire)) 
+			$slaps[] = atom_entry($item,'html',$item_contact,$owner,true);
+	}
+
+	$atom .= '</feed>' . "\r\n";
+
+	logger('notifier: ' . $atom, LOGGER_DATA);
+
+	logger('notifier: slaps: ' . print_r($slaps,true), LOGGER_DATA);
+
+
+	require_once('include/salmon.php');
+
+	if($contact['self'])
+		return;
+
+	$deliver_status = 0;
+
+	switch($contact['network']) {
+
+		case NETWORK_DFRN :
+			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
+				q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`)
+					VALUES ( %d, '%s', '%s', '%s') ",
+					intval($contact['id']),
+					dbesc(datetime_convert()),
+					dbesc(datetime_convert()),
+					dbesc($atom)
+				);
+			}
+			break;
+
+		case NETWORK_OSTATUS :
+
+			// Do not send to otatus if we are not configured to send to public networks
+			if($owner['prvnets'])
+				break;
+			if(get_config('system','ostatus_disabled') || get_config('system','dfrn_only'))
+				break;
+
+			// only send salmon if public - e.g. if it's ok to notify
+			// a public hub, it's ok to send a salmon
+
+			if((count($slaps)) && ($public_message) && (! $expire)) {
+				logger('notifier: slapdelivery: ' . $contact['name']);
+				foreach($slaps as $slappy) {
+					if($contact['notify']) {
+						$deliver_status = slapper($owner,$contact['notify'],$slappy);
+						if($deliver_status == (-1)) {
+							// queue message for redelivery
+							q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`)
+								VALUES ( %d, '%s', '%s', '%s') ",
+								intval($contact['id']),
+								dbesc(datetime_convert()),
+								dbesc(datetime_convert()),
+								dbesc($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")) ;
+				$headers  = 'From: ' . $local_user[0]['username'] . ' <' . $local_user[0]['email'] . '>' . "\n";
+				if($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 :
+			logger('delivery: diaspora deliver: ' . $contact['name']);
+
+			if(get_config('system','dfrn_only') || (! get_config('system','diaspora_enabled')) || (! $normal_mode))
+				break;
+
+			if(! $contact['pubkey'])
+				break;
+					
+			if($target_item['verb'] === ACTIVITY_DISLIKE) {
+				// unsupported
+				break;
+			}
+			elseif(($target_item['deleted']) && ($target_item['verb'] !== ACTIVITY_LIKE)) {
+			logger('delivery: diaspora retract: ' . $contact['name']);
+				// diaspora delete, 
+				diaspora_send_retraction($target_item,$owner,$contact);
+				break;
+			}
+			elseif($target_item['parent'] != $target_item['id']) {
+
+			logger('delivery: diaspora relay: ' . $contact['name']);
+
+				// we are the relay - send comments, likes and unlikes to our conversants
+				diaspora_send_relay($target_item,$owner,$contact);
+				break;
+			}		
+			elseif($top_level) {
+				logger('delivery: diaspora status: ' . $contact['name']);
+				diaspora_send_status($target_item,$owner,$contact);
+				break;
+			}
+
+			logger('delivery: diaspora unknown mode: ' . $contact['name']);
+
+			break;
+
+		case NETWORK_FEED :
+		case NETWORK_FACEBOOK :
+			if(get_config('system','dfrn_only'))
+				break;
+		default:
+			break;
+	}
+
+	return;
+}
+
+if (array_search(__file__,get_included_files())===0){
+  delivery_run($argv,$argc);
+  killme();
+}
diff --git a/include/diaspora.php b/include/diaspora.php
index 90c802363..bb4bd98c7 100644
--- a/include/diaspora.php
+++ b/include/diaspora.php
@@ -1035,14 +1035,6 @@ function diaspora_send_relay($item,$owner,$contact) {
 	else
 		return;
 
-	// fetch the original signature	
-	$r = q("select * from sign where iid = %d limit 1",
-		intval($item['id'])
-	);
-	if(! count($r)) 
-		return;
-	$orig_sign = $r[0];
-
 	if($item['verb'] === ACTIVITY_LIKE) {
 		$tpl = get_markup_template('diaspora_like_relay.tpl');
 		$like = true;
@@ -1056,12 +1048,37 @@ function diaspora_send_relay($item,$owner,$contact) {
 
 	$text = bb2diaspora($item['body']);
 
-	// sign it
+	// fetch the original signature	if somebody sent the post to us to relay
+	// if we are relaying for a reply originating here, there wasn't a 'send to relay'
+	// action. It wasn't needed. In that case create the original signature and the 
+	// owner (parent author) signature
 
-	if($like)
-		$parent_signed_text = $orig_sign['signed_text'];
-	else
-		$parent_signed_text = $orig_sign['signed_text'];
+	$r = q("select * from sign where iid = %d limit 1",
+		intval($item['id'])
+	);
+	if(count($r)) { 
+		$orig_sign = $r[0];
+		$signed_text = $orig_sign['signed_text'];
+		$authorsig = $orig_sign['signature'];
+	}
+	else {
+		if($like)
+			$signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
+		else
+			$signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
+
+		$authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
+
+		q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
+			intval($item['id']),
+			dbesc($signed_text),
+			dbesc(base64_encode($authorsig)),
+			dbesc($myaddr)
+		);
+
+	}
+
+	// sign it
 
 	$parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
 
@@ -1071,18 +1088,11 @@ function diaspora_send_relay($item,$owner,$contact) {
 		'$target_type' =>xmlify($target_type),
 		'$authorsig' => xmlify($orig_sign['signature']),
 		'$parentsig' => xmlify($parentauthorsig),
-		'$text' => xmlify($text),
+		'$body' => xmlify($text),
 		'$positive' => xmlify($positive),
-		'$diaspora_handle' => xmlify($myaddr)
+		'$handle' => xmlify($myaddr)
 	));
 
-	// fetch the original signature	
-	$r = q("select * from sign where iid = %d limit 1",
-		intval($item['id'])
-	);
-	if(! count($r)) 
-		return;
-
 	logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
 
 	$slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
diff --git a/include/notifier.php b/include/notifier.php
index e92a4f6a8..1a3b321cf 100644
--- a/include/notifier.php
+++ b/include/notifier.php
@@ -1,4 +1,5 @@
 <?php
+
 require_once("boot.php");
 
 function notifier_run($argv, $argc){
@@ -35,7 +36,6 @@ function notifier_run($argv, $argc){
 	$cmd = $argv[1];
 
 	switch($cmd) {
-
 		case 'mail':
 		default:
 			$item_id = intval($argv[2]);
@@ -46,6 +46,8 @@ function notifier_run($argv, $argc){
 	}
 
 	$expire = false;
+	$mail = false;
+	$fsuggest = false;
 	$top_level = false;
 	$recipients = array();
 	$url_recipients = array();
@@ -54,6 +56,7 @@ function notifier_run($argv, $argc){
 
 	if($cmd === 'mail') {
 		$normal_mode = false;
+		$mail = true;
 		$message = q("SELECT * FROM `mail` WHERE `id` = %d LIMIT 1",
 				intval($item_id)
 		);
@@ -79,6 +82,8 @@ function notifier_run($argv, $argc){
 	}
 	elseif($cmd === 'suggest') {
 		$normal_mode = false;
+		$fsuggest = true;
+
 		$suggest = q("SELECT * FROM `fsuggest` WHERE `id` = %d LIMIT 1",
 			intval($item_id)
 		);
@@ -144,7 +149,7 @@ function notifier_run($argv, $argc){
 	// fill this in with a single salmon slap if applicable
 	$slap = '';
 
-	if($cmd != 'mail' && $cmd != 'suggest') {
+	if(! ($mail || $fsuggest)) {
 
 		require_once('include/group.php');
 
@@ -235,7 +240,6 @@ function notifier_run($argv, $argc){
 
 		$r = q("SELECT * FROM `contact` WHERE `id` IN ( $conversant_str ) AND `blocked` = 0 AND `pending` = 0");
 
-
 		if(count($r))
 			$contacts = $r;
 	}
@@ -270,7 +274,7 @@ function notifier_run($argv, $argc){
 			'$birthday'     => $birthday
 	));
 
-	if($cmd === 'mail') {
+	if($mail) {
 		$public_message = false;  // mail is  not public
 
 		$body = fix_private_photos($item['body'],$owner['uid']);
@@ -286,7 +290,7 @@ function notifier_run($argv, $argc){
 			'$parent_id'    => xmlify($item['parent-uri'])
 		));
 	}
-	elseif($cmd === 'suggest') {
+	elseif($fsuggest) {
 		$public_message = false;  // suggestions are not public
 
 		$sugg_template = get_markup_template('atom_suggest.tpl');
@@ -383,8 +387,23 @@ function notifier_run($argv, $argc){
 			if($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)) {
+				$interval = intval(get_config('system','delivery_interval'));
+				if(! $interval)
+					$interval = 2;
+
+				proc_run('php','include/delivery.php',$cmd,$item_id,$contact['id']);
+				sleep($interval);
+				continue;
+			}
+
 			$deliver_status = 0;
 
+			logger("main delivery by notifier: followup=$followup mail=$mail fsuggest=$fsuggest");
+
 			switch($contact['network']) {
 				case NETWORK_DFRN:
 					logger('notifier: dfrndelivery: ' . $contact['name']);
@@ -589,52 +608,19 @@ function notifier_run($argv, $argc){
 		}
 	}
 
-	if((strlen($hub)) && ($public_message)) {
-		$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($public_message) {
 
-		/**
-		 *
-		 * If you have less than 999 dfrn friends and it's a public message,
-		 * we'll just go ahead and push them out securely with dfrn/rino or Diaspora.
-		 * If you've got more than that, you'll have to rely on PuSH delivery.
-		 *
-		 */
-
-		$max_allowed = ((get_config('system','maxpubdeliver') === false) ? 999 : intval(get_config('system','maxpubdeliver')));
-				
-		/**
-		 *
-		 * Only get the bare essentials and go back for the full record. 
-		 * If you've got a lot of friends and we grab all the details at once it could exhaust memory. 
-		 *
-		 */
-
 		$r = q("SELECT `id`, `name` FROM `contact` 
 			WHERE `network` in ('%s','%s') AND `uid` = %d AND `blocked` = 0 AND `pending` = 0
-			AND `rel` != %d ",
+			AND `rel` != %d order by rand() ",
 			dbesc(NETWORK_DFRN),
 			dbesc(NETWORK_DIASPORA),
 			intval($owner['uid']),
 			intval(CONTACT_IS_SHARING)
 		);
 
-		if((count($r)) && (($max_allowed == 0) || (count($r) < $max_allowed))) {
-
+		if(count($r)) {
 			logger('pubdeliver: ' . print_r($r,true));
 
 			foreach($r as $rr) {
@@ -646,63 +632,35 @@ function notifier_run($argv, $argc){
 					continue;
 				}
 
-				$n = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
-					intval($rr['id'])
-				);
-
-				if(count($n)) {
-					$contact = $n[0];
-					logger('pubdeliver: network: ' . $contact['network']);
+				if((! $mail) && (! $fsuggest) && (! $followup)) {
+					$interval = intval(get_config('system','delivery_interval'));
+					if(! $interval)
+						$interval = 2;
 
-					switch($contact['network']) {
-						case NETWORK_DFRN :
-							logger('notifier: dfrnpubdelivery: ' . $contact['name']);
-							$deliver_status = dfrn_deliver($owner,$contact,$atom);
-							break;
-						case NETWORK_DIASPORA :
-							require_once('include/diaspora.php');
+					proc_run('php','include/delivery.php',$cmd,$item_id,$rr['id']);
+					sleep($interval);
+					continue;
+				}
+			}
+		}
 
-							logger('notifier: diaspora pubdelivery: ' . $contact['name']);
 
-							if(get_config('system','dfrn_only') || (! get_config('system','diaspora_enabled')) || (! $normal_mode)) {
-								logger('notifier: diaspora pubdelivery not allowed at this time');
-								break;
-							}
-							
-							if(! $contact['pubkey']) {
-								logger('notifier: diaspora pubdelivery: no pubkey');
-								break;
-							}
-					
-							if($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($top_level) {
-								diaspora_send_status($target_item,$owner,$contact);
-								break;
-							}
-						default:
-							break;
-					}
+		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
 				}
 			}
 		}
+
 	}
 
 	return;