Merge branch 'dev'

33 files changed, 844 insertions, 424 deletions

diff --git a/CHANGELOG b/CHANGELOG
index c3e280963..3c57bd26c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,21 @@
+Hubzilla 3.8.4 (2018-11-14)
+	- Fix xss issue (thanks to Eduardo)
+	- Implement hook in enotify to be used by superblock
+	- Various css fixes
+	- Improve photo cache handling
+	- Provide a function hz_syslog() to log to syslog
+	- Fix request_target in z_post_url()
+	- Fix plural handling for various languages
+	- Some preparatory work for zot6
+	- Fix warning in gallery addon
+	- Fix date issue on xchan photo update in diaspora and pubcrawl addons
+	- Fix typos in startpage addon
+	- Improve activitypub addressing
+	- Fix taxonomy in activitypub direct messages
+	- Fix syntax error in diaspora addon
+	- New e-learning addon flashcards
+
+
 Hubzilla 3.8.3 (2018-11-05)
 	- Do not count likes in forum notifications if likes notifications are disabled
 	- Fix typo in spanish translation which broke javascript
diff --git a/Zotlabs/Lib/Enotify.php b/Zotlabs/Lib/Enotify.php
index cfb0bd344..25c96d9cc 100644
--- a/Zotlabs/Lib/Enotify.php
+++ b/Zotlabs/Lib/Enotify.php
@@ -825,7 +825,7 @@ class Enotify {
 
 		// convert this logic into a json array just like the system notifications
 
-		return array(
+		$x = array(
 			'notify_link' => $item['llink'],
 			'name' => $item['author']['xchan_name'],
 			'url' => $item['author']['xchan_url'],
@@ -835,9 +835,19 @@ class Enotify {
 			'b64mid' => ((in_array($item['verb'], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) ? 'b64.' . base64url_encode($item['thr_parent']) : 'b64.' . base64url_encode($item['mid'])),
 			'notify_id' => 'undefined',
 			'thread_top' => (($item['item_thread_top']) ? true : false),
-			'message' => strip_tags(bbcode($itemem_text))
+			'message' => strip_tags(bbcode($itemem_text)),
+			// these are for the superblock addon
+			'hash' => $item['author']['xchan_hash'],
+			'uid' => local_channel(),
+			'display' => true
 		);
 
+		call_hooks('enotify_format',$x);
+		if(! $x['display']) {
+			return [];
+		}
+
+		return $x;
 	}
 
 }
diff --git a/Zotlabs/Lib/Libzot.php b/Zotlabs/Lib/Libzot.php
index ec9db4ce1..2c726aff4 100644
--- a/Zotlabs/Lib/Libzot.php
+++ b/Zotlabs/Lib/Libzot.php
@@ -7,16 +7,10 @@ namespace Zotlabs\Lib;
  *
  */
 
-use Zotlabs\Lib\DReport;
-use Zotlabs\Lib\Enotify;
-use Zotlabs\Lib\Group;
-use Zotlabs\Lib\Libsync;
-use Zotlabs\Lib\Libzotdir;
-use Zotlabs\Lib\System;
-use Zotlabs\Lib\MessageFilter;
-use Zotlabs\Lib\Queue;
-use Zotlabs\Lib\Zotfinger;
-use Zotlabs\Web\HTTPSig;
+use Zotlabs\Zot6\HTTPSig;
+use Zotlabs\Access\Permissions;
+use Zotlabs\Access\PermissionLimits;
+use Zotlabs\Daemon\Master;
 
 require_once('include/crypto.php');
 
@@ -211,9 +205,10 @@ class Libzot {
 
 		if($channel) {
 			$headers = [ 
-				'X-Zot-Token'  => random_string(), 
-				'Digest'       => HTTPSig::generate_digest_header($data), 
-				'Content-type' => 'application/x-zot+json'
+				'X-Zot-Token'      => random_string(), 
+				'Digest'           => HTTPSig::generate_digest_header($data), 
+				'Content-type'     => 'application/x-zot+json',
+				'(request-target)' => 'post ' . get_request_string($url)
 			];
 
 			$h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel),false,'sha512', 
@@ -378,13 +373,13 @@ class Libzot {
 				else {
 					// if we were just granted read stream permission and didn't have it before, try to pull in some posts
 					if((! $old_read_stream_perm) && (intval($permissions['view_stream'])))
-						\Zotlabs\Daemon\Master::Summon(array('Onepoll',$r[0]['abook_id']));
+						Master::Summon([ 'Onepoll', $r[0]['abook_id'] ]);
 				}
 			}
 			else {
 
-				$p = \Zotlabs\Access\Permissions::connect_perms($channel['channel_id']);
-				$my_perms = \Zotlabs\Access\Permissions::serialise($p['perms']);
+				$p = Permissions::connect_perms($channel['channel_id']);
+				$my_perms = Permissions::serialise($p['perms']);
 
 				$automatic = $p['automatic'];
 
@@ -424,8 +419,8 @@ class Libzot {
 					);
 
 					if($new_connection) {
-						if(! \Zotlabs\Access\Permissions::PermsCompare($new_perms,$previous_perms))
-							\Zotlabs\Daemon\Master::Summon(array('Notifier','permissions_create',$new_connection[0]['abook_id']));
+						if(! Permissions::PermsCompare($new_perms,$previous_perms))
+							Master::Summon([ 'Notifier', 'permissions_create', $new_connection[0]['abook_id'] ]);
 						Enotify::submit(
 							[
 							'type'       => NOTIFY_INTRO,
@@ -438,7 +433,7 @@ class Libzot {
 						if(intval($permissions['view_stream'])) {
 							if(intval(get_pconfig($channel['channel_id'],'perm_limits','send_stream') & PERMS_PENDING)
 								|| (! intval($new_connection[0]['abook_pending'])))
-								\Zotlabs\Daemon\Master::Summon(array('Onepoll',$new_connection[0]['abook_id']));
+								Master::Summon([ 'Onepoll', $new_connection[0]['abook_id'] ]);
 						}
 
 
@@ -975,39 +970,45 @@ class Libzot {
 			$x = json_decode($x,true);
 		}
 
-		if(! $x['success']) {
+		if(! is_array($x)) {
+			btlogger('failed communication - no response');
+		}
 
-			// handle remote validation issues
+		if($x) {
+			if(! $x['success']) {
 
-			$b = q("update dreport set dreport_result = '%s', dreport_time = '%s' where dreport_queue = '%s'",
-				dbesc(($x['message']) ? $x['message'] : 'unknown delivery error'),
-				dbesc(datetime_convert()),
-				dbesc($outq['outq_hash'])
-			);
-		}
+				// handle remote validation issues
+	
+				$b = q("update dreport set dreport_result = '%s', dreport_time = '%s' where dreport_queue = '%s'",
+					dbesc(($x['message']) ? $x['message'] : 'unknown delivery error'),
+					dbesc(datetime_convert()),
+					dbesc($outq['outq_hash'])
+				);
+			}
 
-		if(array_key_exists('delivery_report',$x) && is_array($x['delivery_report'])) { 
-			foreach($x['delivery_report'] as $xx) {
-				if(is_array($xx) && array_key_exists('message_id',$xx) && DReport::is_storable($xx)) {
-					q("insert into dreport ( dreport_mid, dreport_site, dreport_recip, dreport_name, dreport_result, dreport_time, dreport_xchan ) values ( '%s', '%s', '%s','%s','%s','%s','%s' ) ",
-						dbesc($xx['message_id']),
-						dbesc($xx['location']),
-						dbesc($xx['recipient']),
-						dbesc($xx['name']),
-						dbesc($xx['status']),
-						dbesc(datetime_convert($xx['date'])),
-						dbesc($xx['sender'])
-					);
+			if(is_array($x) && array_key_exists('delivery_report',$x) && is_array($x['delivery_report'])) { 
+				foreach($x['delivery_report'] as $xx) {
+					call_hooks('dreport_process',$xx);
+					if(is_array($xx) && array_key_exists('message_id',$xx) && DReport::is_storable($xx)) {
+						q("insert into dreport ( dreport_mid, dreport_site, dreport_recip, dreport_name, dreport_result, dreport_time, dreport_xchan ) values ( '%s', '%s', '%s','%s','%s','%s','%s' ) ",
+							dbesc($xx['message_id']),
+							dbesc($xx['location']),
+							dbesc($xx['recipient']),
+							dbesc($xx['name']),
+							dbesc($xx['status']),
+							dbesc(datetime_convert($xx['date'])),
+							dbesc($xx['sender'])
+						);
+					}
 				}
-			}
 
-			// we have a more descriptive delivery report, so discard the per hub 'queue' report.
+				// we have a more descriptive delivery report, so discard the per hub 'queue' report.
 
-			q("delete from dreport where dreport_queue = '%s' ",
-				dbesc($outq['outq_hash'])
-			);
+				q("delete from dreport where dreport_queue = '%s' ",
+					dbesc($outq['outq_hash'])
+				);
+			}
 		}
-
 		// update the timestamp for this site
 
 		q("update site set site_dead = 0, site_update = '%s' where site_url = '%s'",
@@ -1092,13 +1093,27 @@ class Libzot {
 			return;
 		}
 
-		$message_request = ((array_key_exists('message_id',$env)) ? true : false);
-		if($message_request)
-			logger('processing message request');
+		$message_request = false;
+
 
 		$has_data = array_key_exists('data',$env) && $env['data'];
 		$data = (($has_data) ? $env['data'] : false);
-		
+
+		$AS = null;		
+
+		if($env['encoding'] === 'activitystreams') {
+
+				$AS = new ActivityStreams($data);
+				if(! $AS->is_valid()) {
+					logger('Activity rejected: ' . print_r($data,true));
+					return;
+				}
+				$arr = Activity::decode_note($AS);
+
+				logger($AS->debug());
+		}
+
+
 		$deliveries = null;
 
 		if(array_key_exists('recipients',$env) && count($env['recipients'])) {
@@ -1140,7 +1155,7 @@ class Libzot {
 			// and who are allowed to see them based on the sender's permissions
 			// @fixme;
 
-			$deliveries = self::public_recips($env);
+			$deliveries = self::public_recips($env,$AS);
 
 
 		}
@@ -1157,48 +1172,42 @@ class Libzot {
 
 			if(in_array($env['type'],['activity','response'])) {
 
-				if($env['encoding'] === 'zot') {
-					$arr = get_item_elements($data);
-	
-					$v = validate_item_elements($data,$arr);
-					
-					if(! $v['success']) {
-						logger('Activity rejected: ' . $v['message'] . ' ' . print_r($data,true));
-						return;
-					}
-				}
-				elseif($env['encoding'] === 'activitystreams') {
+				$arr = Activity::decode_note($AS);
 
-					$AS = new \Zotlabs\Lib\ActivityStreams($data);
-					if(! $AS->is_valid()) {
-						logger('Activity rejected: ' . print_r($data,true));
-						return;
-					}
-					$arr = \Zotlabs\Lib\Activity::decode_note($AS);
+				//logger($AS->debug());
 
-					logger($AS->debug());
+				$r = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
+					dbesc($AS->actor['id'])
+				); 
 
-					$r = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
-						dbesc($AS->actor['id'])
-					); 
+				if($r) {
+					$arr['author_xchan'] = $r[0]['hubloc_hash'];
+				}
 
-					if($r) {
-						$arr['author_xchan'] = $r[0]['hubloc_hash'];
-					}
-					// @fixme (in individual delivery, change owner if needed)
+
+				$s = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
+					dbesc($env['sender'])
+				); 
+
+				// in individual delivery, change owner if needed
+				if($s) {
+					$arr['owner_xchan'] = $s[0]['hubloc_hash'];
+				}
+				else {
 					$arr['owner_xchan'] = $env['sender'];						
-					if($private) {
-						$arr['item_private'] = true;
-					}
-					// @fixme - spoofable
-					if($AS->data['hubloc']) {
-						$arr['item_verified'] = true;
-					}
-					if($AS->data['signed_data']) {
-						IConfig::Set($arr,'activitystreams','signed_data',$AS->data['signed_data'],false);
-					}
+				}
 
+				if($private) {
+					$arr['item_private'] = true;
+				}
+				// @fixme - spoofable
+				if($AS->data['hubloc']) {
+					$arr['item_verified'] = true;
 				}
+				if($AS->data['signed_data']) {
+					IConfig::Set($arr,'activitystreams','signed_data',$AS->data['signed_data'],false);
+				}
+
 
 				logger('Activity received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
 				logger('Activity recipients: ' . print_r($deliveries,true), LOGGER_DATA, LOG_DEBUG);
@@ -1225,15 +1234,31 @@ class Libzot {
 	}
 
 
-	static function is_top_level($env) {
+	static function is_top_level($env,$act) {
 		if($env['encoding'] === 'zot' && array_key_exists('flags',$env) && in_array('thread_parent', $env['flags'])) {
 			return true;
 		}
-		if($env['encoding'] === 'activitystreams') {
-			if(array_key_exists('inReplyTo',$env['data']) && $env['data']['inReplyTo']) {
+		if($act) {
+			if(in_array($act->type, ['Like','Dislike'])) {
 				return false;
 			}
-			return true;
+			$x = self::find_parent($env,$act);
+			if($x === $act->id || $x === $act->obj['id']) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+
+	static function find_parent($env,$act) {
+		if($act) {
+			if(in_array($act->type, ['Like','Dislike'])) {
+				return $act->obj['id'];
+			}
+			if($act->parent_id) {
+				return $act->parent_id;
+			}
 		}
 		return false;
 	}
@@ -1255,7 +1280,7 @@ class Libzot {
 	 * @return NULL|array
 	 */
 
-	static function public_recips($msg) {
+	static function public_recips($msg, $act) {
 
 		require_once('include/channel.php');
 
@@ -1269,7 +1294,7 @@ class Libzot {
 
 			$perm = 'send_stream';
 
-			if(self::is_top_level($msg)) {
+			if(self::is_top_level($msg,$act)) {
 				$check_mentions = true;
 			}
 		}
@@ -1301,9 +1326,9 @@ class Libzot {
 
 		if($check_mentions) {
 			// It's a top level post. Look at the tags. See if any of them are mentions and are on this hub.
-			if(array_path_exists('data/object/tag',$msg)) {
-				if(is_array($msg['data']['object']['tag']) && $msg['data']['object']['tag']) {
-					foreach($msg['data']['object']['tag'] as $tag) {
+			if($act && $act->obj) {
+				if(is_array($act->obj['tag']) && $act->obj['tag']) {
+					foreach($act->obj['tag'] as $tag) {
 						if($tag['type'] === 'Mention' && (strpos($tag['href'],z_root()) !== false)) {
 							$address = basename($tag['href']);
 							if($address) {
@@ -1325,9 +1350,12 @@ class Libzot {
 			// everybody that stored a copy of the parent. This way we know we're covered. We'll check the
 			// comment permissions when we deliver them.
 
-			if(array_path_exists('data/inReplyTo',$msg)) {
-				$z = q("select owner_xchan as hash from item where parent_mid = '%s' ",
-					dbesc($msg['data']['inReplyTo'])
+			$thread_parent = self::find_parent($msg,$act);
+
+			if($thread_parent) {
+				$z = q("select channel_hash as hash from channel left join item on channel.channel_id = item.uid where ( item.thr_parent = '%s' OR item.parent_mid = '%s' ) ",
+					dbesc($thread_parent),
+					dbesc($thread_parent)
 				);
 				if($z) {
 					foreach($z as $zv) {
@@ -1341,7 +1369,7 @@ class Libzot {
 		// It's a bit of work since it's a multi-dimensional array
 
 		if($r) {
-			$r = array_unique($r);
+			$r = array_values(array_unique($r));
 		}
 
 		logger('public_recips: ' . print_r($r,true), LOGGER_DATA, LOG_DEBUG);
@@ -1378,7 +1406,7 @@ class Libzot {
 
 			$local_public = $public;
 
-			$DR = new \Zotlabs\Lib\DReport(z_root(),$sender,$d,$arr['mid']);
+			$DR = new DReport(z_root(),$sender,$d,$arr['mid']);
 
 			$channel = channelx_by_hash($d);
 
@@ -1413,7 +1441,7 @@ class Libzot {
 				$local_public = true;
 
 				$r = q("select xchan_selfcensored from xchan where xchan_hash = '%s' limit 1",
-					dbesc($sender['hash'])
+					dbesc($sender)
 				);
 				// don't import sys channel posts from selfcensored authors
 				if($r && (intval($r[0]['xchan_selfcensored']))) {
@@ -1441,11 +1469,30 @@ class Libzot {
 				$arr['item_wall'] = 0;
 			}
 
-			if((! perm_is_allowed($channel['channel_id'],$sender,$perm)) && (! $tag_delivery) && (! $local_public)) {
-				logger("permission denied for delivery to channel {$channel['channel_id']} {$channel['channel_address']}");
-				$DR->update('permission denied');
-				$result[] = $DR->get();
-				continue;
+			$friendofriend = false;
+
+			if ((! $tag_delivery) && (! $local_public)) {
+				$allowed = (perm_is_allowed($channel['channel_id'],$sender,$perm));
+				if((! $allowed) && $perm === 'post_comments') {
+					$parent = q("select * from item where mid = '%s' and uid = %d limit 1",
+						dbesc($arr['parent_mid']),
+						intval($channel['channel_id'])
+					);
+					if ($parent) {
+						$allowed = can_comment_on_post($d,$parent[0]);
+					}
+				}
+				if($request) {
+					$allowed = true;
+					$friendofriend = true;
+				}
+        
+				if (! $allowed) {
+					logger("permission denied for delivery to channel {$channel['channel_id']} {$channel['channel_address']}");
+					$DR->update('permission denied');
+					$result[] = $DR->get();
+					continue;
+				}
 			}
 
 			if($arr['mid'] != $arr['parent_mid']) {
@@ -1456,7 +1503,7 @@ class Libzot {
 				// As a side effect we will also do a preliminary check that we have the top-level-post, otherwise
 				// processing it is pointless.
 	
-				$r = q("select route, id from item where mid = '%s' and uid = %d limit 1",
+				$r = q("select route, id, owner_xchan, item_private from item where mid = '%s' and uid = %d limit 1",
 					dbesc($arr['parent_mid']),
 					intval($channel['channel_id'])
 				);
@@ -1480,15 +1527,21 @@ class Libzot {
 
 					if((! $relay) && (! $request) && (! $local_public)
 						&& perm_is_allowed($channel['channel_id'],$sender,'send_stream')) {
-						\Zotlabs\Daemon\Master::Summon(array('Notifier', 'request', $channel['channel_id'], $sender, $arr['parent_mid']));
+						self::fetch_conversation($channel,$arr['parent_mid']);
 					}
 					continue;
 				}
-				if($relay) {
+				
+				if($relay || $friendofriend || (intval($r[0]['item_private']) === 0 && intval($arr['item_private']) === 0)) {
 					// reset the route in case it travelled a great distance upstream
 					// use our parent's route so when we go back downstream we'll match
 					// with whatever route our parent has.
+					// Also friend-of-friend conversations may have been imported without a route,
+					// but we are now getting comments via listener delivery
+					// and if there is no privacy on this or the parent, we don't care about the route, 
+					// so just set the owner and route accordingly.
 					$arr['route'] = $r[0]['route'];
+					$arr['owner_xchan'] = $r[0]['owner_xchan'];
 				}
 				else {
 
@@ -1546,13 +1599,13 @@ class Libzot {
 				$arr['aid'] = $channel['channel_account_id'];
 				$arr['uid'] = $channel['channel_id'];
 	
-				$item_id = delete_imported_item($sender,$arr,$channel['channel_id'],$relay);
+				$item_id = self::delete_imported_item($sender,$arr,$channel['channel_id'],$relay);
 				$DR->update(($item_id) ? 'deleted' : 'delete_failed');
 				$result[] = $DR->get();
 
 				if($relay && $item_id) {
 					logger('process_delivery: invoking relay');
-					\Zotlabs\Daemon\Master::Summon(array('Notifier','relay',intval($item_id)));
+					Master::Summon([ 'Notifier', 'relay', intval($item_id) ]);
 					$DR->update('relayed');
 					$result[] = $DR->get();
 				}
@@ -1662,7 +1715,7 @@ class Libzot {
 
 			if($relay && $item_id) {
 				logger('Invoking relay');
-				\Zotlabs\Daemon\Master::Summon(array('Notifier','relay',intval($item_id)));
+				Master::Summon([ 'Notifier', 'relay', intval($item_id) ]);
 				$DR->addto_update('relayed');
 				$result[] = $DR->get();
 			}
@@ -1676,6 +1729,98 @@ class Libzot {
 		return $result;
 	}
 
+	static public function fetch_conversation($channel,$mid) {
+
+		// Use Zotfinger to create a signed request
+
+		$a = Zotfinger::exec($mid,$channel);
+
+		logger('received conversation: ' . print_r($a,true), LOGGER_DATA);
+
+		if($a['data']['type'] !== 'OrderedCollection') {
+			return;
+		}
+
+		if(! intval($a['data']['totalItems'])) {
+			return;
+		}
+
+		$ret = [];
+
+		foreach($a['data']['orderedItems'] as $activity) {
+
+			$AS = new ActivityStreams($activity);
+			if(! $AS->is_valid()) {
+				logger('FOF Activity rejected: ' . print_r($activity,true));
+				continue;
+			}
+			$arr = Activity::decode_note($AS);
+
+			logger($AS->debug());
+
+
+			$r = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
+				dbesc($AS->actor['id'])
+			); 
+
+			if(! $r) {
+				$y = import_author_xchan([ 'url' => $AS->actor['id'] ]);
+				if($y) {
+					$r = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
+						dbesc($AS->actor['id'])
+					);
+				} 
+				if(! $r) {
+					logger('FOF Activity: no actor');
+					continue;
+				}
+			}
+
+			if($AS->obj['actor'] && $AS->obj['actor']['id'] && $AS->obj['actor']['id'] !== $AS->actor['id']) {
+				$y = import_author_xchan([ 'url' => $AS->obj['actor']['id'] ]);
+				if(! $y) {
+					logger('FOF Activity: no object actor');
+					continue;
+				}
+			}
+
+
+			if($r) {
+				$arr['author_xchan'] = $r[0]['hubloc_hash'];
+			}
+
+			$s = q("select hubloc_hash from hubloc where hubloc_id_url = '%s' limit 1",
+				dbesc($a['signature']['signer'])
+			); 
+
+			if($s) {
+				$arr['owner_xchan'] = $s[0]['hubloc_hash'];
+			}
+			else {
+				$arr['owner_xchan'] = $a['signature']['signer'];
+			}
+
+			// @fixme - spoofable
+			if($AS->data['hubloc']) {
+				$arr['item_verified'] = true;
+			}
+			if($AS->data['signed_data']) {
+				IConfig::Set($arr,'activitystreams','signed_data',$AS->data['signed_data'],false);
+			}
+
+			logger('FOF Activity received: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
+			logger('FOF Activity recipient: ' . $channel['channel_hash'], LOGGER_DATA, LOG_DEBUG);
+
+			$result = self::process_delivery($arr['owner_xchan'],$arr, [ $channel['channel_hash'] ],false,false,true);
+			if ($result) {
+				$ret = array_merge($ret, $result);
+			}		
+		}
+
+		return $ret;
+	}
+
+
 	/**
 	 * @brief Remove community tag.
 	 *
@@ -1900,7 +2045,7 @@ class Libzot {
 
 		foreach($deliveries as $d) {
 	
-			$DR = new \Zotlabs\Lib\DReport(z_root(),$sender,$d,$arr['mid']);
+			$DR = new DReport(z_root(),$sender,$d,$arr['mid']);
 
 			$r = q("select * from channel where channel_hash = '%s' limit 1",
 				dbesc($d['hash'])
@@ -2112,7 +2257,8 @@ class Libzot {
 				if(intval($channel['channel_removed']) && $hub['hubloc_url'] === z_root())
 					$hub['hubloc_deleted'] = 1;
 
-				$ret[] = [
+
+				$z = [
 					'host'     => $hub['hubloc_host'],
 					'address'  => $hub['hubloc_addr'],
 					'id_url'   => $hub['hubloc_id_url'],
@@ -2120,10 +2266,25 @@ class Libzot {
 					'url'      => $hub['hubloc_url'],
 					'url_sig'  => $hub['hubloc_url_sig'],
 					'site_id'  => $hub['hubloc_site_id'],
-					'callback' => $hub['hubloc_callback'],
+					'callback' => $hub['hubloc_url'] . '/zot',
 					'sitekey'  => $hub['hubloc_sitekey'],
 					'deleted'  => (intval($hub['hubloc_deleted']) ? true : false)
 				];
+
+				// version compatibility tweaks
+
+				if(! strpos($z['url_sig'],'.')) {
+					$z['url_sig'] = 'sha256.' . $z['url_sig'];
+				}
+
+				if(! $z['id_url']) {
+					$z['id_url'] = $z['url'] . '/channel/' . substr($z['address'],0,strpos($z['address'],'@'));
+				}
+				if(! $z['site_id']) {
+					$z['site_id'] = Libzot::make_xchan_hash($z['url'],$z['sitekey']);
+				}
+					 
+				$ret[] = $z;
 			}
 		}
 
@@ -2331,6 +2492,10 @@ class Libzot {
 		// we may only end up with one; which results in posts with no author name or photo and are a bit
 		// of a hassle to repair. If either or both are missing, do a full discovery probe.
 
+		if(! array_key_exists('id',$x)) {
+			return import_author_activitypub($x);
+		}
+
 		$hash = self::make_xchan_hash($x['id'],$x['key']);
 
 		$desturl = $x['url'];
@@ -2502,7 +2667,7 @@ class Libzot {
 		}
 		else {
 			// check if it has characteristics of a public forum based on custom permissions.
-			$m = \Zotlabs\Access\Permissions::FilledAutoperms($e['channel_id']);
+			$m = Permissions::FilledAutoperms($e['channel_id']);
 			if($m) {
 				foreach($m as $k => $v) {
 					if($k == 'tag_deliver' && intval($v) == 1)
@@ -2584,13 +2749,13 @@ class Libzot {
 		];
 
 		$ret['channel_role'] = get_pconfig($e['channel_id'],'system','permissions_role','custom');
-
+		$ret['protocols']    = [ 'zot6' ];
 		$ret['searchable']     = $searchable;
 		$ret['adult_content']  = $adult_channel;
 		$ret['public_forum']   = $public_forum;
 		
-		$ret['comments']       = map_scope(\Zotlabs\Access\PermissionLimits::Get($e['channel_id'],'post_comments'));
-		$ret['mail']           = map_scope(\Zotlabs\Access\PermissionLimits::Get($e['channel_id'],'post_mail'));
+		$ret['comments']       = map_scope(PermissionLimits::Get($e['channel_id'],'post_comments'));
+		$ret['mail']           = map_scope(PermissionLimits::Get($e['channel_id'],'post_mail'));
 
 		if($deleted)
 			$ret['deleted']        = $deleted;
diff --git a/Zotlabs/Lib/PConfig.php b/Zotlabs/Lib/PConfig.php
index ec0792ce1..b9384cf6b 100644
--- a/Zotlabs/Lib/PConfig.php
+++ b/Zotlabs/Lib/PConfig.php
@@ -57,6 +57,7 @@ class PConfig {
 					\App::$config[$uid][$c]['config_loaded'] = true;
 				}
 				\App::$config[$uid][$c][$k] = $rr['v'];
+				\App::$config[$uid][$c]['pcfgud:'.$k] = $rr['updated'];
 			}
 		}
 	}
@@ -113,7 +114,7 @@ class PConfig {
 	 *  The value to store
 	 * @return mixed Stored $value or false
 	 */
-	static public function Set($uid, $family, $key, $value) {
+	static public function Set($uid, $family, $key, $value, $updated=NULL) {
 
 		// this catches subtle errors where this function has been called
 		// with local_channel() when not logged in (which returns false)
@@ -130,29 +131,74 @@ class PConfig {
 		$dbvalue = ((is_array($value))  ? serialize($value) : $value);
 		$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue)  : $dbvalue);
 
+		if (! $updated) {
+			$updated = datetime_convert();
+		}
+
+		$hash = hash('sha256',$family.':'.$key);
+
+		if (self::Get($uid, 'hz_delpconfig', $hash) !== false) {
+			if (Get($uid, 'hz_delpconfig', $hash) > $updated) {
+				logger('Refusing to update pconfig with outdated info (Item deleted more recently).', LOGGER_NORMAL, LOG_ERR);
+				return self::Get($uid,$family,$key);
+			} else {
+				self::Delete($uid,'hz_delpconfig',$hash);
+			}
+		}
+
 		if(self::Get($uid, $family, $key) === false) {
 			if(! array_key_exists($uid, \App::$config))
 				\App::$config[$uid] = array();
 			if(! array_key_exists($family, \App::$config[$uid]))
 				\App::$config[$uid][$family] = array();
 
-			$ret = q("INSERT INTO pconfig ( uid, cat, k, v ) VALUES ( %d, '%s', '%s', '%s' ) ",
+
+			$ret = q("INSERT INTO pconfig ( uid, cat, k, v, updated ) VALUES ( %d, '%s', '%s', '%s', '%s' ) ",
 				intval($uid),
 				dbesc($family),
 				dbesc($key),
-				dbesc($dbvalue)
+				dbesc($dbvalue),
+				dbesc($updated)
 			);
+
+			// There is a possible race condition if another process happens
+			// to insert something after this thread has Loaded and now.  We should
+			// at least make a note of it if it happens.
+
+			if (!$ret) {
+				logger("Error: Insert to pconfig failed.",LOGGER_NORMAL, LOG_ERR);
+			}
+
+			\App::$config[$uid][$family]['pcfgud:'.$key] = $updated;
+
 		}
 		else {
+			$new = (\App::$config[$uid][$family]['pcfgud:'.$key] < $updated);
 
-			$ret = q("UPDATE pconfig SET v = '%s' WHERE uid = %d and cat = '%s' AND k = '%s'",
-				dbesc($dbvalue),
-				intval($uid),
-				dbesc($family),
-				dbesc($key)
-			);
+			if ($new) {
+
+				// @NOTE There is still a possible race condition under limited circumstances
+				// where a value will be updated by another thread with more current data than
+				// we have.  At this point there is no easy way to test for it, so we update
+				// and hope for the best.
+
+				$ret = q("UPDATE pconfig SET v = '%s', updated = '%s' WHERE uid = %d and cat = '%s' AND k = '%s' ",
+					dbesc($dbvalue),
+					dbesc($updated),
+					intval($uid),
+					dbesc($family),
+					dbesc($key)
+				);
+
+				\App::$config[$uid][$family]['pcfgud:'.$key] = $updated;
+
+			} else {
+				logger('Refusing to update pconfig with outdated info.', LOGGER_NORMAL, LOG_ERR);
+				return self::Get($uid, $family, $key);
+			}
 		}
 
+
 		// keep a separate copy for all variables which were
 		// set in the life of this page. We need this to
 		// synchronise channel clones.
@@ -163,7 +209,11 @@ class PConfig {
 			\App::$config[$uid]['transient'][$family] = array();
 
 		\App::$config[$uid][$family][$key] = $value;
-		\App::$config[$uid]['transient'][$family][$key] = $value;
+
+		if ($new) {
+			\App::$config[$uid]['transient'][$family][$key] = $value;
+			\App::$config[$uid]['transient'][$family]['pcfgud:'.$key] = $updated;
+		}
 
 		if($ret)
 			return $value;
@@ -186,18 +236,29 @@ class PConfig {
 	 *  The configuration key to delete
 	 * @return mixed
 	 */
-	static public function Delete($uid, $family, $key) {
+	static public function Delete($uid, $family, $key, $updated = NULL) {
 
 		if(is_null($uid) || $uid === false)
 			return false;
 
+		$updated = ($updated) ? $updated : datetime_convert();
+
+		$newer = (\App::$config[$uid][$family]['pcfgud:'.$key] < $updated);
+
+		if (! $newer) {
+			logger('Refusing to delete pconfig with outdated delete request.', LOGGER_NORMAL, LOG_ERR);
+			return false;
+		}
+
 		$ret = false;
 
-		if(array_key_exists($uid,\App::$config)
-			&& is_array(\App::$config['uid'])
-			&& array_key_exists($family,\App::$config['uid'])
-			&& array_key_exists($key, \App::$config[$uid][$family]))
+		if (isset(\App::$config[$uid][$family][$key])) {
 			unset(\App::$config[$uid][$family][$key]);
+		}
+
+		if (isset(\App::$config[$uid][$family]['pcfgud:'.$key])) {
+			unset(\App::$config[$uid][$family]['pcfgud:'.$key]);
+		}
 
 		$ret = q("DELETE FROM pconfig WHERE uid = %d AND cat = '%s' AND k = '%s'",
 			intval($uid),
@@ -205,6 +266,22 @@ class PConfig {
 			dbesc($key)
 		);
 
+		if ($family != 'hz_delpconfig') {
+			$hash = hash('sha256',$family.':'.$key);
+			set_pconfig($uid,'hz_delpconfig',$hash,$updated);
+		}
+
+		// Synchronize delete with clones.
+
+		if(! array_key_exists('transient', \App::$config[$uid]))
+			\App::$config[$uid]['transient'] = array();
+		if(! array_key_exists($family, \App::$config[$uid]['transient']))
+			\App::$config[$uid]['transient'][$family] = array();
+
+		if ($new) {
+			\App::$config[$uid]['transient'][$family]['pcfgdel:'.$key] = $updated;
+		}
+
 		return $ret;
 	}
 
diff --git a/Zotlabs/Module/Owa.php b/Zotlabs/Module/Owa.php
index 4a488086f..ad57f883c 100644
--- a/Zotlabs/Module/Owa.php
+++ b/Zotlabs/Module/Owa.php
@@ -31,15 +31,17 @@ class Owa extends \Zotlabs\Web\Controller {
 
 					if($keyId) {
 						$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash 
-							where hubloc_addr = '%s' ",
-							dbesc(str_replace('acct:','',$keyId))
+							where ( hubloc_addr = '%s' or hubloc_id_url = '%s' ) ",
+							dbesc(str_replace('acct:','',$keyId)),
+							dbesc($keyId)
 						);
 						if(! $r) {
 							$found = discover_by_webbie(str_replace('acct:','',$keyId));
 							if($found) {
 								$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash 
-									where hubloc_addr = '%s' ",
-									dbesc(str_replace('acct:','',$keyId))
+									where ( hubloc_addr = '%s' or hubloc_id_url = '%s' ) ",
+									dbesc(str_replace('acct:','',$keyId)),
+									dbesc($keyId)
 								);
 							}
 						}
diff --git a/Zotlabs/Module/Photo.php b/Zotlabs/Module/Photo.php
index 8efc00707..30e8340e2 100644
--- a/Zotlabs/Module/Photo.php
+++ b/Zotlabs/Module/Photo.php
@@ -4,13 +4,12 @@ namespace Zotlabs\Module;
 require_once('include/security.php');
 require_once('include/attach.php');
 require_once('include/photo/photo_driver.php');
-require_once('include/photos.php');
 
 
 class Photo extends \Zotlabs\Web\Controller {
 
 	function init() {
-	
+
 		$prvcachecontrol = false;
 		$streaming = null;
 		$channel = null;
@@ -32,26 +31,26 @@ class Photo extends \Zotlabs\Web\Controller {
 		}
 	
 		$observer_xchan = get_observer_hash();
+		$ismodified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
 
-		$default = z_root() . '/' . get_default_profile_photo();
-	
 		if(isset($type)) {
 	
 			/**
 			 * Profile photos - Access controls on default profile photos are not honoured since they need to be exchanged with remote sites.
 			 * 
 			 */
-	
+			 
+			$default = get_default_profile_photo();
+			 
 			if($type === 'profile') {
 				switch($res) {
-	
 					case 'm':
 						$resolution = 5;
-						$default = z_root() . '/' . get_default_profile_photo(80);
+						$default = get_default_profile_photo(80);
 						break;
 					case 's':
 						$resolution = 6;
-						$default = z_root() . '/' . get_default_profile_photo(48);
+						$default = get_default_profile_photo(48);
 						break;
 					case 'l':
 					default:
@@ -60,6 +59,8 @@ class Photo extends \Zotlabs\Web\Controller {
 				}
 			}
 	
+			$modified = filemtime($default);
+			$default = z_root() . '/' . $default;
 			$uid = $person;
 
 			$d = [ 'imgscale' => $resolution, 'channel_id' => $uid, 'default' => $default, 'data'  => '', 'mimetype' => '' ];
@@ -78,17 +79,18 @@ class Photo extends \Zotlabs\Web\Controller {
 					intval(PHOTO_PROFILE)
 				);
 				if($r) {
+					$modified = strtotime($r[0]['edited'] . "Z");
 					$data = dbunescbin($r[0]['content']);
 					$mimetype = $r[0]['mimetype'];
 				}
 				if(intval($r[0]['os_storage']))
 					$data = file_get_contents($data);
 			}
+
 			if(! $data) {
-				$data = fetch_image_from_url($default,$mimetype);
-			}
-			if(! $mimetype) {
-				$mimetype = 'image/png';
+			    $x = z_fetch_url($default,true,0,[ 'novalidate' => true ]);
+			    $data = ($x['success'] ? $x['body'] : EMPTY_STR);
+			    $mimetype = 'image/png';
 			}
 		}
 		else {
@@ -124,9 +126,7 @@ class Photo extends \Zotlabs\Web\Controller {
 				$photo = substr($photo,0,-2);
 				// If viewing on a high-res screen, attempt to serve a higher resolution image:
 				if ($resolution == 2 && ($cookie_value > 1))
-				  {
 				    $resolution = 1;
-				  }
 			}
 			
 			$r = q("SELECT uid, photo_usage FROM photo WHERE resource_id = '%s' AND imgscale = %d LIMIT 1",
@@ -163,10 +163,13 @@ class Photo extends \Zotlabs\Web\Controller {
 
 				if($exists && $allowed) {
 					$data = dbunescbin($e[0]['content']);
+					$filesize = $e[0]['filesize'];
 					$mimetype = $e[0]['mimetype'];
-					if(intval($e[0]['os_storage'])) {
+					$modified = strtotime($e[0]['edited'] . 'Z');
+					if(intval($e[0]['os_storage']))
 						$streaming = $data;
-					}
+					if($e[0]['allow_cid'] != '' || $e[0]['allow_gid'] != '' || $e[0]['deny_gid'] != '' || $e[0]['deny_gid'] != '')
+						$prvcachecontrol = true;
 				}
 				else {
 					if(! $allowed) {
@@ -177,27 +180,40 @@ class Photo extends \Zotlabs\Web\Controller {
 					}
 
 				}
+			} else {
+				http_status_exit(404,'not found');
 			}
 		}
-	
+
+		header_remove('Pragma');
+
+        if($ismodified === gmdate("D, d M Y H:i:s", $modified) . " GMT") {
+			header_remove('Expires');
+			header_remove('Cache-Control');
+			header_remove('Set-Cookie');
+			http_status_exit(304,'not modified');
+        }
+
 		if(! isset($data)) {
 			if(isset($resolution)) {
 				switch($resolution) {
-	
 					case 4:
-						$data = fetch_image_from_url(z_root() . '/' . get_default_profile_photo(),$mimetype);
+						$default = get_default_profile_photo();
 						break;
 					case 5:
-						$data = fetch_image_from_url(z_root() . '/' . get_default_profile_photo(80),$mimetype);
+						$default = get_default_profile_photo(80);
 						break;
 					case 6:
-						$data = fetch_image_from_url(z_root() . '/' . get_default_profile_photo(48),$mimetype);
+						$default = get_default_profile_photo(48);
 						break;
 					default:
 						killme();
 						// NOTREACHED
 						break;
 				}
+				$x = z_fetch_url(z_root() . '/' . $default,true,0,[ 'novalidate' => true ]);
+				$data = ($x['success'] ? $x['body'] : EMPTY_STR);
+				$mimetype = 'image/png';
 			}
 		}
 	
@@ -210,15 +226,14 @@ class Photo extends \Zotlabs\Web\Controller {
 			}
 		}
 	
+		// @FIXME Seems never invoked
 		// Writing in cachefile
-		if (isset($cachefile) && $cachefile != '')
+		if (isset($cachefile) && $cachefile != '') {
 			file_put_contents($cachefile, $data);
-	
-		if(function_exists('header_remove')) {
-			header_remove('Pragma');
-			header_remove('pragma');
+			$modified = filemtime($cachefile);
 		}
-	
+
+
 		header("Content-type: " . $mimetype);
 	
 		if($prvcachecontrol) {
@@ -240,15 +255,16 @@ class Photo extends \Zotlabs\Web\Controller {
 			// This has performance considerations but we highly recommend you 
 			// leave it alone. 
 	
-			$cache = get_config('system','photo_cache_time');
-			if(! $cache)
-				$cache = (3600 * 24); // 1 day
-	
+			$cache = get_config('system','photo_cache_time', 86400);    // 1 day by default
+
 		 	header("Expires: " . gmdate("D, d M Y H:i:s", time() + $cache) . " GMT");
 			header("Cache-Control: max-age=" . $cache);
 	
 		}
 
+		header("Last-Modified: " . gmdate("D, d M Y H:i:s", $modified) . " GMT");
+		header("Content-Length: " . (isset($filesize) ? $filesize : strlen($data)));
+
 		// If it's a file resource, stream it. 
 
 		if($streaming && $channel) {
diff --git a/Zotlabs/Module/Photos.php b/Zotlabs/Module/Photos.php
index 78bfb1f09..03fd8a53d 100644
--- a/Zotlabs/Module/Photos.php
+++ b/Zotlabs/Module/Photos.php
@@ -263,7 +263,8 @@ class Photos extends \Zotlabs\Web\Controller {
 							$fsize = strlen($data);
 						}
 	
-						$x = q("update photo set content = '%s', filesize = %d, height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 0",
+						$x = q("update photo set edited = '%s', content = '%s', filesize = %d, height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 0",
+						    dbesc(datetime_convert()),
 							dbescbin($data),
 							intval($fsize),
 							intval($height),
@@ -278,7 +279,8 @@ class Photos extends \Zotlabs\Web\Controller {
 						$width  = $ph->getWidth();
 						$height = $ph->getHeight();
 	
-						$x = q("update photo set content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 1",
+						$x = q("update photo set edited = '%s', content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 1",
+						    dbesc(datetime_convert()),
 							dbescbin($ph->imageString()),
 							intval($height),
 							intval($width),
@@ -293,7 +295,8 @@ class Photos extends \Zotlabs\Web\Controller {
 						$width  = $ph->getWidth();
 						$height = $ph->getHeight();
 	
-						$x = q("update photo set content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 2",
+						$x = q("update photo set edited = '%s', content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 2",
+						    dbesc(datetime_convert()),
 							dbescbin($ph->imageString()),
 							intval($height),
 							intval($width),
@@ -308,7 +311,8 @@ class Photos extends \Zotlabs\Web\Controller {
 						$width  = $ph->getWidth();
 						$height = $ph->getHeight();
 	
-						$x = q("update photo set content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 3",
+						$x = q("update photo set edited = '%s', content = '%s', height = %d, width = %d where resource_id = '%s' and uid = %d and imgscale = 3",
+						    dbesc(datetime_convert()),
 							dbescbin($ph->imageString()),
 							intval($height),
 							intval($width),
diff --git a/Zotlabs/Module/Search.php b/Zotlabs/Module/Search.php
index e520c671d..838f9d6b9 100644
--- a/Zotlabs/Module/Search.php
+++ b/Zotlabs/Module/Search.php
@@ -6,7 +6,7 @@ class Search extends \Zotlabs\Web\Controller {
 
 	function init() {
 		if(x($_REQUEST,'search'))
-			\App::$data['search'] = $_REQUEST['search'];
+			\App::$data['search'] = escape_tags($_REQUEST['search']);
 	}
 	
 	
@@ -46,12 +46,12 @@ class Search extends \Zotlabs\Web\Controller {
 		if(x(\App::$data,'search'))
 			$search = trim(\App::$data['search']);
 		else
-			$search = ((x($_GET,'search')) ? trim(rawurldecode($_GET['search'])) : '');
+			$search = ((x($_GET,'search')) ? trim(escape_tags(rawurldecode($_GET['search']))) : '');
 	
 		$tag = false;
 		if(x($_GET,'tag')) {
 			$tag = true;
-			$search = ((x($_GET,'tag')) ? trim(rawurldecode($_GET['tag'])) : '');
+			$search = ((x($_GET,'tag')) ? trim(escape_tags(rawurldecode($_GET['tag']))) : '');
 		}
 
 		$static = ((array_key_exists('static',$_REQUEST)) ? intval($_REQUEST['static']) : 0);
@@ -227,9 +227,9 @@ class Search extends \Zotlabs\Web\Controller {
 		}
 	
 		if($tag) 
-			$o .= '<h2>' . sprintf( t('Items tagged with: %s'),htmlspecialchars($search, ENT_COMPAT,'UTF-8')) . '</h2>';
+			$o .= '<h2>' . sprintf( t('Items tagged with: %s'),$search) . '</h2>';
 		else
-			$o .= '<h2>' . sprintf( t('Search results for: %s'),htmlspecialchars($search, ENT_COMPAT,'UTF-8')) . '</h2>';
+			$o .= '<h2>' . sprintf( t('Search results for: %s'),$search) . '</h2>';
 	
 		$o .= conversation($items,'search',$update,'client');
 	
diff --git a/Zotlabs/Update/_1225.php b/Zotlabs/Update/_1225.php
new file mode 100644
index 000000000..a7d866154
--- /dev/null
+++ b/Zotlabs/Update/_1225.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Zotlabs\Update;
+
+class _1225 {
+
+	function run() {
+
+		if(ACTIVE_DBTYPE == DBTYPE_POSTGRES) {
+			$r1 = q("ALTER TABLE pconfig ADD updated timestamp NOT NULL DEFAULT '0001-01-01 00:00:00' ");
+ 			$r2 = q("create index \"pconfig_updated_idx\" on pconfig (\"updated\")");
+
+			$r = ($r1 && $r2);
+		}
+		else {
+			$r = q("ALTER TABLE `pconfig` ADD `updated` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' , 
+				ADD INDEX `pconfig_updated` (`updated`)");
+		}
+
+		if($r)
+			return UPDATE_SUCCESS;
+		return UPDATE_FAILED;
+
+	}
+
+}
diff --git a/boot.php b/boot.php
index a15f15797..f4ef1a036 100755
--- a/boot.php
+++ b/boot.php
@@ -50,11 +50,10 @@ require_once('include/attach.php');
 require_once('include/bbcode.php');
 
 define ( 'PLATFORM_NAME',           'hubzilla' );
-define ( 'STD_VERSION',             '3.8.3' );
+define ( 'STD_VERSION',             '3.8.4' );
 define ( 'ZOT_REVISION',            '6.0a' );
 
-
-define ( 'DB_UPDATE_VERSION',       1224 );
+define ( 'DB_UPDATE_VERSION',       1225 );
 
 define ( 'PROJECT_BASE',   __DIR__ );
 
diff --git a/include/bbcode.php b/include/bbcode.php
index 137e25a9c..c5d6ef998 100644
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -1198,24 +1198,24 @@ function bbcode($Text, $options = []) {
 	// Images
 	// [img]pathtoimage[/img]
 	if (strpos($Text,'[/img]') !== false) {
-		$Text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img style="max-width=100%;" src="$1" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img style="max-width: 100%;" src="$1" alt="' . t('Image/photo') . '" />', $Text);
 	}
 	if (strpos($Text,'[/zmg]') !== false) {
-		$Text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img class="zrl" style="max-width=100%;" src="$1" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img class="zrl" style="max-width: 100%;" src="$1" alt="' . t('Image/photo') . '" />', $Text);
 	}
 
 	// [img float={left, right}]pathtoimage[/img]
 	if (strpos($Text,'[/img]') !== false) {
-		$Text = preg_replace("/\[img float=left\](.*?)\[\/img\]/ism", '<img style="max-width=100%;" src="$1" style="float: left;" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[img float=left\](.*?)\[\/img\]/ism", '<img src="$1" style="max-width: 100%; float: left;" alt="' . t('Image/photo') . '" />', $Text);
 	}
 	if (strpos($Text,'[/img]') !== false) {
-		$Text = preg_replace("/\[img float=right\](.*?)\[\/img\]/ism", '<img style="max-width=100%;" src="$1" style="float: right;" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[img float=right\](.*?)\[\/img\]/ism", '<img src="$1" style="max-width: 100%; float: right;" alt="' . t('Image/photo') . '" />', $Text);
 	}
 	if (strpos($Text,'[/zmg]') !== false) {
-		$Text = preg_replace("/\[zmg float=left\](.*?)\[\/zmg\]/ism", '<img style="max-width=100%;" class="zrl" src="$1" style="float: left;" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[zmg float=left\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$1" style="max-width: 100%; float: left;" alt="' . t('Image/photo') . '" />', $Text);
 	}
 	if (strpos($Text,'[/zmg]') !== false) {
-		$Text = preg_replace("/\[zmg float=right\](.*?)\[\/zmg\]/ism", '<img style="max-width=100%;" class="zrl" src="$1" style="float: right;" alt="' . t('Image/photo') . '" />', $Text);
+		$Text = preg_replace("/\[zmg float=right\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$1" style="max-width: 100%; float: right;" alt="' . t('Image/photo') . '" />', $Text);
 	}
 
 	// [img=widthxheight]pathtoimage[/img]
diff --git a/include/config.php b/include/config.php
index 0be791715..ec3547a82 100644
--- a/include/config.php
+++ b/include/config.php
@@ -59,8 +59,8 @@ function set_pconfig($uid, $family, $key, $value) {
 	return Zlib\PConfig::Set($uid,$family,$key,$value);
 }
 
-function del_pconfig($uid, $family, $key) {
-	return Zlib\PConfig::Delete($uid,$family,$key);
+function del_pconfig($uid, $family, $key, $updated = NULL) {
+	return Zlib\PConfig::Delete($uid,$family,$key,$updated);
 }
 
 function load_xconfig($xchan) {
diff --git a/include/dba/dba_driver.php b/include/dba/dba_driver.php
index 9533acc7f..ee0e06a91 100755
--- a/include/dba/dba_driver.php
+++ b/include/dba/dba_driver.php
@@ -173,14 +173,14 @@ abstract class dba_driver {
 			return false;
 		}
 
-		if(strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1') && (! strpbrk($server,':;'))) {
-			if(! z_dns_check($server)) {
-				$this->error = sprintf( t('Cannot locate DNS info for database server \'%s\''), $server);
-				$this->connected = false;
-				$this->db = null;
-				return false;
-			}
-		}
+		// if(strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1') && (! strpbrk($server,':;'))) {
+		// 	if(! z_dns_check($server)) {
+		// 		$this->error = sprintf( t('Cannot locate DNS info for database server \'%s\''), $server);
+		// 		$this->connected = false;
+		// 		$this->db = null;
+		// 		return false;
+		// 	}
+		// }
 
 		return true;
 	}
@@ -468,7 +468,7 @@ function db_columns($table) {
 		if(ACTIVE_DBTYPE === DBTYPE_POSTGRES) {
 			$r = q("SELECT column_name as field FROM information_schema.columns WHERE table_schema = 'public' AND table_name = '%s'",
 				dbesc($table)
-			); 
+			);
 			if($r) {
 				return ids_to_array($r,'field');
 			}
diff --git a/include/network.php b/include/network.php
index f976dcc35..d37da05f7 100644
--- a/include/network.php
+++ b/include/network.php
@@ -233,7 +233,7 @@ function z_post_url($url, $params, $redirects = 0, $opts = array()) {
 		return $ret;
 
 	if(! array_key_exists('request_target',$opts)) {
-		$opts['request_target'] = 'get ' . get_request_string($url);
+		$opts['request_target'] = 'post ' . get_request_string($url);
 	}
 
 	@curl_setopt($ch, CURLOPT_HEADER, true);
diff --git a/include/photo/photo_driver.php b/include/photo/photo_driver.php
index 2e2f5a758..4173d727e 100644
--- a/include/photo/photo_driver.php
+++ b/include/photo/photo_driver.php
@@ -350,8 +350,7 @@ abstract class photo_driver {
 		$p['allow_gid'] = (($arr['allow_gid']) ? $arr['allow_gid'] : '');
 		$p['deny_cid'] = (($arr['deny_cid']) ? $arr['deny_cid'] : '');
 		$p['deny_gid'] = (($arr['deny_gid']) ? $arr['deny_gid'] : '');
-		$p['created'] = (($arr['created']) ? $arr['created'] : datetime_convert());
-		$p['edited'] = (($arr['edited']) ? $arr['edited'] : $p['created']);
+		$p['edited'] = (($arr['edited']) ? $arr['edited'] : datetime_convert()); 
 		$p['title'] = (($arr['title']) ? $arr['title'] : '');
 		$p['description'] = (($arr['description']) ? $arr['description'] : '');
 		$p['photo_usage'] = intval($arr['photo_usage']);
@@ -365,13 +364,15 @@ abstract class photo_driver {
 		if(! intval($p['imgscale']))
 			logger('save: ' . print_r($arr,true), LOGGER_DATA);
 
-		$x = q("select id from photo where resource_id = '%s' and uid = %d and xchan = '%s' and imgscale = %d limit 1",
+		$x = q("select id, created from photo where resource_id = '%s' and uid = %d and xchan = '%s' and imgscale = %d limit 1",
 				dbesc($p['resource_id']),
 				intval($p['uid']),
 				dbesc($p['xchan']),
 				intval($p['imgscale'])
 		);
+		
 		if($x) {
+			$p['created'] = (($x['created']) ? $x['created'] : $p['edited']);
 			$r = q("UPDATE photo set
 				aid = %d,
 				uid = %d,
@@ -427,6 +428,7 @@ abstract class photo_driver {
 			);
 		}
 		else {
+			$p['created'] = (($arr['created']) ? $arr['created'] : $p['edited']);
 			$r = q("INSERT INTO photo
 				( aid, uid, xchan, resource_id, created, edited, filename, mimetype, album, height, width, content, os_storage, filesize, imgscale, photo_usage, title, description, os_path, display_path, allow_cid, allow_gid, deny_cid, deny_gid )
 				VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d, %d, %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )",
@@ -464,11 +466,6 @@ abstract class photo_driver {
 
 
 
-
-
-
-
-
 /**
  * Guess image mimetype from filename or from Content-Type header
  *
@@ -485,11 +482,11 @@ function guess_image_type($filename, $headers = '') {
 		$h = explode("\n",$headers);
 		foreach ($h as $l) {
 			list($k,$v) = array_map("trim", explode(":", trim($l), 2));
-			$hdrs[$k] = $v;
+			$hdrs[strtolower($k)] = $v;
 		}
 		logger('Curl headers: '.var_export($hdrs, true), LOGGER_DEBUG);
-		if (array_key_exists('Content-Type', $hdrs))
-			$type = $hdrs['Content-Type'];
+		if (array_key_exists('content-type', $hdrs))
+			$type = $hdrs['content-type'];
 	}
 	if (is_null($type)){
 
@@ -570,122 +567,166 @@ function delete_thing_photo($url,$ob_hash) {
 
 
 
-function import_xchan_photo($photo,$xchan,$thing = false) {
-
-	$flags = (($thing) ? PHOTO_THING : PHOTO_XCHAN);
-	$album = (($thing) ? 'Things' : 'Contact Photos');
-
-	logger('import_xchan_photo: updating channel photo from ' . $photo . ' for ' . $xchan, LOGGER_DEBUG);
-
-	if($thing)
-		$hash = photo_new_resource();
-	else {
-		$r = q("select resource_id from photo where xchan = '%s' and photo_usage = %d and imgscale = 4 limit 1",
-			dbesc($xchan),
-			intval(PHOTO_XCHAN)
-		);
-		if($r) {
-			$hash = $r[0]['resource_id'];
-		}
-		else {
-			$hash = photo_new_resource();
-		}
-	}
-
-	$photo_failure = false;
-	$img_str = '';
-
-	if($photo) {
-		$filename = basename($photo);
-
-		$result = z_fetch_url($photo,true);
-
-		if($result['success']) {
-			$img_str = $result['body'];
-			$type = guess_image_type($photo, $result['header']);
-
-			$h = explode("\n",$result['header']);
-			if($h) {
-				foreach($h as $hl) {
-					if(stristr($hl,'content-type:')) {
-						if(! stristr($hl,'image/')) {
-							$photo_failure = true;
-						}
-					}
-				}
-			}
-		}
-	}
-	else {
-		$photo_failure = true;
-	}
-
-	if(! $photo_failure) {
-		$img = photo_factory($img_str, $type);
-		if($img->is_valid()) {
-			$width = $img->getWidth();
-			$height = $img->getHeight();
-	
-			if($width && $height) {
-				if(($width / $height) > 1.2) {
-					// crop out the sides
-					$margin = $width - $height;
-					$img->cropImage(300,($margin / 2),0,$height,$height);
-				}
-				elseif(($height / $width) > 1.2) {
-					// crop out the bottom
-					$margin = $height - $width;
-					$img->cropImage(300,0,0,$width,$width);
-
-				}
-				else {
-					$img->scaleImageSquare(300);
-				}
-
-			}
-			else 
-				$photo_failure = true;
-
-			$p = array('xchan' => $xchan,'resource_id' => $hash, 'filename' => basename($photo), 'album' => $album, 'photo_usage' => $flags, 'imgscale' => 4);
-
-			$r = $img->save($p);
-
-			if($r === false)
-				$photo_failure = true;
-
-			$img->scaleImage(80);
-			$p['imgscale'] = 5;
-	
-			$r = $img->save($p);
-
-			if($r === false)
-				$photo_failure = true;
-	
-			$img->scaleImage(48);
-			$p['imgscale'] = 6;
-	
-			$r = $img->save($p);
-
-			if($r === false)
-				$photo_failure = true;
-
-			$photo = z_root() . '/photo/' . $hash . '-4';
-			$thumb = z_root() . '/photo/' . $hash . '-5';
-			$micro = z_root() . '/photo/' . $hash . '-6';
-		}
-		else {
-			logger('import_xchan_photo: invalid image from ' . $photo);	
-			$photo_failure = true;
-		}
-	}
-	if($photo_failure) {
-		$photo = z_root() . '/' . get_default_profile_photo();
-		$thumb = z_root() . '/' . get_default_profile_photo(80);
-		$micro = z_root() . '/' . get_default_profile_photo(48);
-		$type = 'image/png';
-	}
+/**
+ * @brief fetches an photo from external site and prepares its miniatures.
+ *
+ * @param string $photo
+ *    external URL to fetch base image
+ * @param string $xchan
+ *    channel unique hash
+ * @param boolean $thing
+ *    TRUE if this is a thing URL
+ * @param boolean $force
+ *    TRUE if ignore image modification date check (force fetch)
+ *
+ * @return array of results
+ * * \e string \b 0 => local URL to full image
+ * * \e string \b 1 => local URL to standard thumbnail
+ * * \e string \b 2 => local URL to micro thumbnail
+ * * \e string \b 3 => image type
+ * * \e boolean \b 4 => TRUE if fetch failure
+ * * \e string \b 5 => modification date
+ */
 
-	return(array($photo,$thumb,$micro,$type,$photo_failure));
+function import_xchan_photo($photo,$xchan,$thing = false,$force = false) {
+
+        $modified = '';
+
+        $flags = (($thing) ? PHOTO_THING : PHOTO_XCHAN);
+        $album = (($thing) ? 'Things' : 'Contact Photos');
+
+        logger('import_xchan_photo: updating channel photo from ' . $photo . ' for ' . $xchan, LOGGER_DEBUG);
+
+        if($thing) {
+                $hash = photo_new_resource();
+        }
+        else {
+                $r = q("select resource_id, edited, mimetype from photo where xchan = '%s' and photo_usage = %d and imgscale = 4 limit 1",
+                        dbesc($xchan),
+                        intval(PHOTO_XCHAN)
+                );
+                if($r) {
+                        $hash = $r[0]['resource_id'];
+                        $modified = $r[0]['edited'];
+                        $type = $r[0]['mimetype'];
+                }
+                else {
+                        $hash = photo_new_resource();
+                }
+        }
+
+        $photo_failure = false;
+        $img_str = '';
+
+        if($photo) {
+                $filename = basename($photo);
+
+                if($force || $modified == '') {
+                        $result = z_fetch_url($photo,true);
+                }
+                else {
+                        $h = array('headers' => array("If-Modified-Since: " . gmdate("D, d M Y H:i:s", strtotime($modified . "Z")) . " GMT"));
+                        $result = z_fetch_url($photo,true,0,$h);
+                }
+
+                if($result['success']) {
+                        $img_str = $result['body'];
+                        $type = guess_image_type($photo, $result['header']);
+                        $modified = gmdate('Y-m-d H:i:s', (preg_match('/last-modified: (.+) \S+/i', $result['header'], $o) ? strtotime($o[1] . 'Z') : time()));
+
+                        if(is_null($type))
+                                $photo_failure = true;
+                }
+                elseif($result['return_code'] == 304) {
+                        $photo = z_root() . '/photo/' . $hash . '-4';
+                        $thumb = z_root() . '/photo/' . $hash . '-5';
+                        $micro = z_root() . '/photo/' . $hash . '-6';
+                }
+                else {
+                        $photo_failure = true;
+                }
+
+        }
+        else
+                $photo_failure = true;
+
+        if(! $photo_failure && $result['return_code'] != 304) {
+                $img = photo_factory($img_str, $type);
+                if($img->is_valid()) {
+                        $width = $img->getWidth();
+                        $height = $img->getHeight();
+
+                        if($width && $height) {
+                                if(($width / $height) > 1.2) {
+                                        // crop out the sides
+                                        $margin = $width - $height;
+                                        $img->cropImage(300,($margin / 2),0,$height,$height);
+                                }
+                                elseif(($height / $width) > 1.2) {
+                                        // crop out the bottom
+                                        $margin = $height - $width;
+                                        $img->cropImage(300,0,0,$width,$width);
+
+                                }
+                                else {
+                                        $img->scaleImageSquare(300);
+                                }
+
+                        }
+                        else
+                                $photo_failure = true;
+
+                        $p = array(
+							'xchan' => $xchan,
+							'resource_id' => $hash,
+							'filename' => basename($photo),
+							'album' => $album,
+							'photo_usage' => $flags,
+							'imgscale' => 4,
+							'edited' => $modified
+						);
+
+                        $r = $img->save($p);
+
+                        if($r === false)
+                                $photo_failure = true;
+
+                        $img->scaleImage(80);
+                        $p['imgscale'] = 5;
+
+                        $r = $img->save($p);
+
+                        if($r === false)
+                                $photo_failure = true;
+
+                        $img->scaleImage(48);
+                        $p['imgscale'] = 6;
+
+                        $r = $img->save($p);
+
+                        if($r === false)
+                                $photo_failure = true;
+
+                        $photo = z_root() . '/photo/' . $hash . '-4';
+                        $thumb = z_root() . '/photo/' . $hash . '-5';
+                        $micro = z_root() . '/photo/' . $hash . '-6';
+                }
+                else {
+                        logger('import_xchan_photo: invalid image from ' . $photo);
+                        $photo_failure = true;
+                }
+        }
+        if($photo_failure) {
+                $default = get_default_profile_photo();
+                $photo = z_root() . '/' . $default;
+                $thumb = z_root() . '/' . get_default_profile_photo(80);
+                $micro = z_root() . '/' . get_default_profile_photo(48);
+                $type = 'image/png';
+                $modified = gmdate('Y-m-d H:i:s', filemtime($default));
+        }
+
+		logger('HTTP code: ' . $result['return_code'] . '; modified: ' . $modified . '; failure: ' . ($photo_failure ? 'yes' : 'no') . '; URL: ' . $photo, LOGGER_DEBUG);
+        return(array($photo,$thumb,$micro,$type,$photo_failure,$modified));
 
 }
 
@@ -700,16 +741,8 @@ function import_channel_photo_from_url($photo,$aid,$uid) {
 			$img_str = $result['body'];
 			$type = guess_image_type($photo, $result['header']);
 
-			$h = explode("\n",$result['header']);
-			if($h) {
-				foreach($h as $hl) {
-					if(stristr($hl,'content-type:')) {
-						if(! stristr($hl,'image/')) {
-							$photo_failure = true;
-						}
-					}
-				}
-			}
+            if(is_null($type))
+                    $photo_failure = true;
 		}
 	}
 	else {
diff --git a/include/photos.php b/include/photos.php
index d0c5f77fc..d5553b495 100644
--- a/include/photos.php
+++ b/include/photos.php
@@ -1011,23 +1011,3 @@ function profile_photo_set_profile_perms($uid, $profileid = 0) {
 		}
 	}
 }
-
-function fetch_image_from_url($url,&$mimetype) {
-
-	$redirects = 0;
-	$x = z_fetch_url($url,true,$redirects,[ 'novalidate' => true ]);
-	if($x['success']) {
-		$hdrs = [];
-		$h = explode("\n",$x['header']);
-		foreach ($h as $l) {
-			list($k,$v) = array_map("trim", explode(":", trim($l), 2));
-			$hdrs[strtolower($k)] = $v;
-		}
-		if (array_key_exists('content-type', $hdrs))
-			$mimetype = $hdrs['content-type'];
-
-		return $x['body'];
-	}
-
-	return EMPTY_STR;
-}
\ No newline at end of file
diff --git a/include/text.php b/include/text.php
index 1d884593f..076c98407 100644
--- a/include/text.php
+++ b/include/text.php
@@ -634,6 +634,19 @@ function attribute_contains($attr, $s) {
 }
 
 /**
+ * @brief Log to syslog
+ *
+ * @param string $msg Message to log
+ * @param int $priority - compatible with syslog
+ */
+function hz_syslog($msg, $priority = LOG_INFO) {
+	openlog("hz-log", LOG_PID | LOG_PERROR, LOG_LOCAL0);
+	syslog($priority, $msg);
+	closelog();
+}
+
+
+/**
  * @brief Logging function for Hubzilla.
  *
  * Logging output is configured through Hubzilla's system config. The log file
@@ -3219,8 +3232,16 @@ function create_table_from_array($table, $arr, $binary_fields = []) {
 	if(! ($arr && $table))
 		return false;
 
+	$columns = db_columns($table);
+
 	$clean = [];
 	foreach($arr as $k => $v) {
+
+		if(! in_array($k,$columns)) {
+			continue;
+		}
+
+
 		$matches = false;
 		if(preg_match('/([^a-zA-Z0-9\-\_\.])/',$k,$matches)) {
 			return false;
diff --git a/include/xchan.php b/include/xchan.php
index aad56063f..eb5f1b4a3 100644
--- a/include/xchan.php
+++ b/include/xchan.php
@@ -1,5 +1,7 @@
 <?php
 
+use Zotlabs\Zot6\HTTPSig;
+
 
 function xchan_store_lowlevel($arr) {
 
@@ -39,6 +41,13 @@ function xchan_store_lowlevel($arr) {
 
 function xchan_store($arr) {
 
+	$update_photo = false;
+	$update_name = false;
+
+	if(! ($arr['guid'] || $arr['hash'])) {
+		$arr = json_decode(file_get_contents('php://input'),true);
+	}
+
 	logger('xchan_store: ' . print_r($arr,true));
 
 	if(! $arr['hash'])
@@ -49,57 +58,90 @@ function xchan_store($arr) {
 	$r = q("select * from xchan where xchan_hash = '%s' limit 1",
 		dbesc($arr['hash'])
 	);
-	if($r)
-		return true;
-
-	if(! $arr['network'])
-		$arr['network'] = 'unknown';
-	if(! $arr['name'])
-		$arr['name'] = 'unknown';
-	if(! $arr['url'])
-		$arr['url'] = z_root();
-	if(! $arr['photo'])
-		$arr['photo'] = z_root() . '/' . get_default_profile_photo();
-
-
-	if($arr['network'] === 'zot') {
-		if((! $arr['key']) || (! rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key']))) {
-			logger('Unable to verify signature for ' . $arr['hash']);
-			return false;
+	if(! $r) {
+
+		$update_photo = true;
+
+		if(! $arr['network'])
+			$arr['network'] = 'unknown';
+		if(! $arr['name'])
+			$arr['name'] = 'unknown';
+		if(! $arr['url'])
+			$arr['url'] = z_root();
+		if(! $arr['photo'])
+			$arr['photo'] = z_root() . '/' . get_default_profile_photo();
+
+		if($arr['network'] === 'zot6') {
+			if((! $arr['key']) || (! Libzot::verify($arr['id'],$arr['id_sig'],$arr['key']))) {
+				logger('Unable to verify signature for ' . $arr['hash']);
+				return false;
+			}
 		}
-	}
 
-	$x = [];
-	foreach($arr as $k => $v) {
-		if($k === 'key') {
-			$x['xchan_pubkey'] = $v;
-			continue;
-		}
-		if($k === 'photo') {
-			continue;
+		if($arr['network'] === 'zot') {
+			if((! $arr['key']) || (! rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key']))) {	
+				logger('Unable to verify signature for ' . $arr['hash']);
+				return false;
+			}
 		}
-		
-		$x['xchan_' . $k] = $v;
-	}
 
-	$x['xchan_name_date'] = datetime_convert();
+		$columns = db_columns('xchan');
+
+		$x = [];
+		foreach($arr as $k => $v) {
+			if($k === 'key') {
+				$x['xchan_pubkey'] = HTTPSig::convertKey(escape_tags($v));;
+				continue;
+			}
+			if($k === 'photo') {
+				continue;
+			}
+		
+			if(in_array($columns,'xchan_' . $k))
+				$x['xchan_' . $k] = escape_tags($v);
+		}
 
-	$r = xchan_store_lowlevel($x);
+		$x['xchan_name_date'] = datetime_convert();
+		$x['xchan_photo_date'] = datetime_convert();
+		$x['xchan_system']     = false;
 
-	if(! $r)
-		return $r;
-
-	$photos = import_xchan_photo($arr['photo'],$arr['hash']);
-	$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'",
-		dbesc(datetime_convert()),
-		dbesc($photos[0]),
-		dbesc($photos[1]),
-		dbesc($photos[2]),
-		dbesc($photos[3]),
-		dbesc($arr['hash'])
-	);
-	return $r;
+		$result = xchan_store_lowlevel($x);
+	
+		if(! $result)
+			return $result;
+	}
+	else {
+		if($r[0]['network'] === 'zot6') {
+			return true;
+		}
+		if($r[0]['xchan_photo_date'] < datetime_convert('UTC','UTC',$arr['photo_date'])) {
+			$update_photo = true;
+		}
+		if($r[0]['xchan_name_date'] < datetime_convert('UTC','UTC',$arr['name_date'])) {
+			$update_name = true;
+		}
+    }
+
+	if($update_photo && $arr['photo']) {
+		$photos = import_xchan_photo($arr['photo'],$arr['hash']);
+		$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'",
+			dbesc(datetime_convert()),
+			dbesc($photos[0]),
+			dbesc($photos[1]),
+			dbesc($photos[2]),
+			dbesc($photos[3]),
+			dbesc($arr['hash'])
+		);
+	}
+	if($update_name && $arr['name']) {
+		$x = q("update xchan set xchan_name = '%s', xchan_name_date = '%s' where xchan_hash = '%s'",
+			dbesc(escape_tags($arr['name'])),
+			dbesc(datetime_convert()),
+			dbesc($arr['hash'])
+		);
+	}
 
+	return true;
 }
 
 
diff --git a/include/zot.php b/include/zot.php
index 1a632cf87..49fc89e33 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -3507,8 +3507,41 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 
 		if(array_key_exists('config',$arr) && is_array($arr['config']) && count($arr['config'])) {
 			foreach($arr['config'] as $cat => $k) {
-				foreach($arr['config'][$cat] as $k => $v)
-					set_pconfig($channel['channel_id'],$cat,$k,$v);
+
+				$pconfig_updated = [];
+				$pconfig_del = [];
+
+				foreach($arr['config'][$cat] as $k => $v) {
+
+					if (strpos($k,'pcfgud:')===0) {
+
+						$realk = substr($k,7);
+						$pconfig_updated[$realk] = $v;
+						unset($arr['config'][$cat][$k]);
+
+					}
+
+					if (strpos($k,'pcfgdel:')===0) {
+						$realk = substr($k,8);
+						$pconfig_del[$realk] = datetime_convert();
+						unset($arr['config'][$cat][$k]);
+					}
+				}
+
+				foreach($arr['config'][$cat] as $k => $v) {
+
+					if (!isset($pconfig_updated[$k])) {
+						$pconfig_updated[$k] = NULL;
+					}
+
+					set_pconfig($channel['channel_id'],$cat,$k,$v,$pconfig_updated[$k]);
+
+				}
+
+				foreach($pconfig_del as $k => $updated) {
+					del_pconfig($channel['channel_id'],$cat,$k,$updated);
+				}
+
 			}
 		}
 
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index d55227eb1..ce0232306 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -1505,6 +1505,7 @@ class ComposerStaticInit7b34d7e50a62201ec5d5e526a5b8b35d
         'Zotlabs\\Update\\_1222' => __DIR__ . '/../..' . '/Zotlabs/Update/_1222.php',
         'Zotlabs\\Update\\_1223' => __DIR__ . '/../..' . '/Zotlabs/Update/_1223.php',
         'Zotlabs\\Update\\_1224' => __DIR__ . '/../..' . '/Zotlabs/Update/_1224.php',
+        'Zotlabs\\Update\\_1225' => __DIR__ . '/../..' . '/Zotlabs/Update/_1225.php',
         'Zotlabs\\Web\\CheckJS' => __DIR__ . '/../..' . '/Zotlabs/Web/CheckJS.php',
         'Zotlabs\\Web\\Controller' => __DIR__ . '/../..' . '/Zotlabs/Web/Controller.php',
         'Zotlabs\\Web\\HTTPHeaders' => __DIR__ . '/../..' . '/Zotlabs/Web/HTTPHeaders.php',
diff --git a/view/de-de/hmessages.po b/view/de-de/hmessages.po
index 8af9dce6b..4eaec3629 100644
--- a/view/de-de/hmessages.po
+++ b/view/de-de/hmessages.po
@@ -35,7 +35,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: de\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Access/Permissions.php:56
 msgid "Can view my channel stream and posts"
diff --git a/view/es-es/hmessages.po b/view/es-es/hmessages.po
index f2c1ccf79..3b42394b1 100644
--- a/view/es-es/hmessages.po
+++ b/view/es-es/hmessages.po
@@ -22,7 +22,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: es_ES\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Access/Permissions.php:56
 msgid "Can view my channel stream and posts"
diff --git a/view/es-es/hstrings.php b/view/es-es/hstrings.php
index 2024504a1..a459e10dd 100644
--- a/view/es-es/hstrings.php
+++ b/view/es-es/hstrings.php
@@ -2,10 +2,10 @@
 
 if(! function_exists("string_plural_select_es_es")) {
 function string_plural_select_es_es($n){
-	return ($n != 1);;
+	return ($n != 1 ? 1 : 0);
 }}
 App::$rtl = 0;
-App::$strings["plural_function_code"] = "(n != 1)";
+App::$strings["plural_function_code"] = "(n != 1 ? 1 : 0)";
 App::$strings["Can view my channel stream and posts"] = "Pueden verse la actividad y publicaciones de mi canal";
 App::$strings["Can send me their channel stream and posts"] = "Se me pueden enviar entradas y contenido de un canal";
 App::$strings["Can view my default channel profile"] = "Puede verse mi perfil de canal predeterminado.";
diff --git a/view/fr/hmessages.po b/view/fr/hmessages.po
index c5263c2df..0c89da139 100644
--- a/view/fr/hmessages.po
+++ b/view/fr/hmessages.po
@@ -22,7 +22,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: fr\n"
-"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+"Plural-Forms: nplurals=2; plural=(n > 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Access/Permissions.php:56
 msgid "Can view my channel stream and posts"
diff --git a/view/he/hmessages.po b/view/he/hmessages.po
index 991b7f64f..837dfabd0 100644
--- a/view/he/hmessages.po
+++ b/view/he/hmessages.po
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: he\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Storage/Browser.php:107 ../../Zotlabs/Storage/Browser.php:239
 msgid "parent"
diff --git a/view/it/hmessages.po b/view/it/hmessages.po
index 94911bc20..8c1dc08d7 100644
--- a/view/it/hmessages.po
+++ b/view/it/hmessages.po
@@ -18,7 +18,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: it\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Access/Permissions.php:56
 msgid "Can view my channel stream and posts"
diff --git a/view/nb-no/hmessages.po b/view/nb-no/hmessages.po
index bcb926d90..0f7f2e8c5 100644
--- a/view/nb-no/hmessages.po
+++ b/view/nb-no/hmessages.po
@@ -16,7 +16,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: nb_NO\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Storage/Browser.php:107 ../../Zotlabs/Storage/Browser.php:239
 msgid "parent"
diff --git a/view/nl/hmessages.po b/view/nl/hmessages.po
index c98121122..c672e534e 100644
--- a/view/nl/hmessages.po
+++ b/view/nl/hmessages.po
@@ -18,7 +18,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: nl\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../Zotlabs/Access/Permissions.php:56
 msgid "Can view my channel stream and posts"
diff --git a/view/pt-br/hmessages.po b/view/pt-br/hmessages.po
index 029642f9b..2645cc9bd 100644
--- a/view/pt-br/hmessages.po
+++ b/view/pt-br/hmessages.po
@@ -25,7 +25,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: pt_BR\n"
-"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+"Plural-Forms: nplurals=2; plural=(n > 1 ? 1 : 0);\n"
 
 #: ../../include/dba/dba_driver.php:50
 #, php-format
diff --git a/view/sv/hmessages.po b/view/sv/hmessages.po
index 4486a8630..249dbd8be 100644
--- a/view/sv/hmessages.po
+++ b/view/sv/hmessages.po
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Language: sv\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1 ? 1 : 0);\n"
 
 #: ../../include/dba/dba_driver.php:142
 #, php-format
diff --git a/view/theme/redbasic/css/style.css b/view/theme/redbasic/css/style.css
index ddf3d1295..f2c1b7a48 100644
--- a/view/theme/redbasic/css/style.css
+++ b/view/theme/redbasic/css/style.css
@@ -872,10 +872,6 @@ div.jGrowl div.jGrowl-notification {
 	margin-left: 20px;
 }
 
-.reshared-content img {
-	width: 100%;
-}
-
 .shared_header img {
 	border-radius: $radius;
 	margin-right: 10px;
@@ -884,21 +880,19 @@ div.jGrowl div.jGrowl-notification {
 .tag1 {
     font-size : 0.9em !important;
   }
+
 .tag2 {
     font-size : 1.0em !important;
   }
 
-
 .tag3 {
     font-size : 1.1em !important;
   }
 
-
 .tag4 {
     font-size : 1.2em !important;
   }
 
-
 .tag5 {
     font-size : 1.3em !important;
   }
@@ -918,12 +912,10 @@ div.jGrowl div.jGrowl-notification {
     font-size : 1.6em !important;
   }
 
-
 .tag9 {
     font-size : 1.7em !important;
   }
 
-
 .tag10 {
     font-size : 1.8em !important;
   }
diff --git a/view/theme/redbasic/schema/Focus-Light.php b/view/theme/redbasic/schema/Focus-Light.php
index 14ee130d9..8a542d1b8 100644
--- a/view/theme/redbasic/schema/Focus-Light.php
+++ b/view/theme/redbasic/schema/Focus-Light.php
@@ -3,10 +3,11 @@
 	if (! $nav_bg)
 		$nav_bg = "#f8f9fa";
 	if (! $nav_icon_colour)
-		$nav_icon_colour = "rgba(0, 0, 0, 0.5);";
+		$nav_icon_colour = "rgba(0, 0, 0, 0.5)";
 	if (! $nav_active_icon_colour)
 		$nav_active_icon_colour = "rgba(0, 0, 0, 0.7)";
 	if (! $radius)
 		$radius = "4px";
 	if (! $banner_colour)
 		$banner_colour = "rgba(0, 0, 0, 0.7)";
+
diff --git a/view/tpl/activity_filter_widget.tpl b/view/tpl/activity_filter_widget.tpl
index 1eb11c10f..7d10100ba 100644
--- a/view/tpl/activity_filter_widget.tpl
+++ b/view/tpl/activity_filter_widget.tpl
@@ -17,7 +17,7 @@
 		</form>
 	</div>
 	<script>
-		$("#cid-filter").name_autocomplete(baseurl + '/acl', 'a', true, function(data) {
+		$("#cid-filter").contact_autocomplete(baseurl + '/acl', 'a', true, function(data) {
 			$("#cid").val(data.id);
 		});
 	</script>