Merge branch 'dev' into 'dev'

Implement CardDAV address book sync with clones

See merge request hubzilla/core!1829

5 files changed, 443 insertions, 235 deletions

diff --git a/Zotlabs/Lib/Libsync.php b/Zotlabs/Lib/Libsync.php
index b9e9bb38a..d1756cf47 100644
--- a/Zotlabs/Lib/Libsync.php
+++ b/Zotlabs/Lib/Libsync.php
@@ -244,7 +244,10 @@ class Libsync {
 
 			if(array_key_exists('app',$arr) && $arr['app'])
 				sync_apps($channel,$arr['app']);
-	
+				
+			if(array_key_exists('addressbook',$arr) && $arr['addressbook'])
+			    sync_addressbook($channel,$arr['addressbook']);
+
 			if(array_key_exists('chatroom',$arr) && $arr['chatroom'])
 				sync_chatrooms($channel,$arr['chatroom']);
 
diff --git a/Zotlabs/Module/Cdav.php b/Zotlabs/Module/Cdav.php
index af40689c1..593a78a53 100644
--- a/Zotlabs/Module/Cdav.php
+++ b/Zotlabs/Module/Cdav.php
@@ -10,6 +10,7 @@ require_once('include/event.php');
 
 require_once('include/auth.php');
 require_once('include/security.php');
+require_once('include/cdav.php');
 
 class Cdav extends Controller {
 
@@ -156,6 +157,69 @@ class Cdav extends Controller {
 				}
 
 			}
+			
+			// Track CDAV updates from remote clients
+
+			$httpmethod = $_SERVER['REQUEST_METHOD']; 
+
+			if($httpmethod === 'PUT' || $httpmethod === 'DELETE') {
+
+				$httpuri = $_SERVER['REQUEST_URI'];
+
+				logger("debug: method: " . $httpmethod, LOGGER_DEBUG);
+				logger("debug: uri: " . $httpuri, LOGGER_DEBUG);
+
+				// currently we process CardDAV requests only
+				if(strpos($httpuri, 'cdav/addressbooks')) {
+
+					$uri = basename($httpuri);
+					$httpbody = file_get_contents('php://input');
+
+					logger("debug: body: " . $httpbody, LOGGER_DEBUG);
+
+					if($id = get_cdav_id($principalUri, explode("/", $httpuri)[4], 'addressbooks')) {
+
+						$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+						
+						$etag = (isset($_SERVER['HTTP_IF_MATCH']) ? $_SERVER['HTTP_IF_MATCH'] : false);
+						
+						// delete
+						if($httpmethod === 'DELETE' && $cdavdata['etag'] == $etag)
+							build_sync_packet($channel['channel_id'], [
+								'addressbook' => [
+									'action' => 'delete_card',
+									'uri' => $cdavdata['uri'],
+									'carduri' => $uri
+								]
+							]);
+						else {
+							if($etag) {
+								// update
+								if($cdavdata['etag'] !== $etag)
+								    build_sync_packet($channel['channel_id'], [
+									    'addressbook' => [
+										    'action' => 'update_card',
+										    'uri' => $cdavdata['uri'],
+										    'carduri' => $uri,
+										    'card' => $httpbody
+									    ]
+								    ]);
+							}
+							else {
+								// new
+								build_sync_packet($channel['channel_id'], [
+									'addressbook' => [
+										'action' => 'import',
+										'uri' => $cdavdata['uri'],
+										'ids' => [ $uri ],
+										'card' => $httpbody
+									]
+								]);
+							}
+						}
+					}
+				}
+			}
 
 
 			$principalBackend = new \Sabre\DAVACL\PrincipalBackend\PDO($pdo);
@@ -523,6 +587,14 @@ class Cdav extends Controller {
 				$properties = ['{DAV:}displayname' => $_REQUEST['{DAV:}displayname']];
 
 				$carddavBackend->createAddressBook($principalUri, $addressbookUri, $properties);
+
+				build_sync_packet($channel['channel_id'], [
+                                        'addressbook' => [
+                                                'action' => 'create',
+						'uri' => $addressbookUri,
+                                                'properties' => $properties
+                                        ]
+                                ]);
 			}
 
 			//edit addressbook
@@ -530,6 +602,8 @@ class Cdav extends Controller {
 
 				$id = $_REQUEST['id'];
 
+				$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+
 				if(! cdav_perms($id,$addressbooks))
 					return;
 
@@ -538,16 +612,24 @@ class Cdav extends Controller {
 				];
 
 				$patch = new \Sabre\DAV\PropPatch($mutations);
-
 				$carddavBackend->updateAddressBook($id, $patch);
-
 				$patch->commit();
+
+				build_sync_packet($channel['channel_id'], [
+					'addressbook' => [
+						'action' => 'edit',
+						'uri' => $cdavdata['uri'],
+						'mutations' => $mutations,
+					]
+				]);
 			}
 
 			//create addressbook card
 			if($_REQUEST['create'] && $_REQUEST['target'] && $_REQUEST['fn']) {
 				$id = $_REQUEST['target'];
 
+				$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+
 				do {
 					$duplicate = false;
 					$uri = random_string(40) . '.vcf';
@@ -569,86 +651,22 @@ class Cdav extends Controller {
 					'N' => array_reverse(explode(' ', $fn))
 				]);
 
-				$org = $_REQUEST['org'];
-				if($org) {
-					$vcard->ORG = $org;
-				}
+				$fields = $this->request_to_array($_REQUEST);
 
-				$title = $_REQUEST['title'];
-				if($title) {
-					$vcard->TITLE = $title;
-				}
-
-				$tel = $_REQUEST['tel'];
-				$tel_type = $_REQUEST['tel_type'];
-				if($tel) {
-					$i = 0;
-					foreach($tel as $item) {
-						if($item) {
-							$vcard->add('TEL', $item, ['type' => $tel_type[$i]]);
-						}
-						$i++;
-					}
-				}
-
-				$email = $_REQUEST['email'];
-				$email_type = $_REQUEST['email_type'];
-				if($email) {
-					$i = 0;
-					foreach($email as $item) {
-						if($item) {
-							$vcard->add('EMAIL', $item, ['type' => $email_type[$i]]);
-						}
-						$i++;
-					}
-				}
-
-				$impp = $_REQUEST['impp'];
-				$impp_type = $_REQUEST['impp_type'];
-				if($impp) {
-					$i = 0;
-					foreach($impp as $item) {
-						if($item) {
-							$vcard->add('IMPP', $item, ['type' => $impp_type[$i]]);
-						}
-						$i++;
-					}
-				}
-
-				$url = $_REQUEST['url'];
-				$url_type = $_REQUEST['url_type'];
-				if($url) {
-					$i = 0;
-					foreach($url as $item) {
-						if($item) {
-							$vcard->add('URL', $item, ['type' => $url_type[$i]]);
-						}
-						$i++;
-					}
-				}
-
-				$adr = $_REQUEST['adr'];
-				$adr_type = $_REQUEST['adr_type'];
-
-				if($adr) {
-					$i = 0;
-					foreach($adr as $item) {
-						if($item) {
-							$vcard->add('ADR', $item, ['type' => $adr_type[$i]]);
-						}
-						$i++;
-					}
-				}
-
-				$note = $_REQUEST['note'];
-				if($note) {
-					$vcard->NOTE = $note;
-				}
+				process_cdav_card($fields, $vcard);
 
 				$cardData = $vcard->serialize();
 
 				$carddavBackend->createCard($id, $uri, $cardData);
 
+				build_sync_packet($channel['channel_id'], [
+					'addressbook' => [
+						'action' => 'import',
+						'uri' => $cdavdata['uri'],
+						'ids' => [ $uri ],
+						'card' => $cardData
+					]
+				]);
 			}
 
 			//edit addressbook card
@@ -656,6 +674,8 @@ class Cdav extends Controller {
 
 				$id = $_REQUEST['target'];
 
+				$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+
 				if(!cdav_perms($id,$addressbooks))
 					return;
 
@@ -670,113 +690,23 @@ class Cdav extends Controller {
 					$vcard->N = array_reverse(explode(' ', $fn));
 				}
 
-				$org = $_REQUEST['org'];
-				if($org) {
-					$vcard->ORG = $org;
-				}
-				else {
-					unset($vcard->ORG);
-				}
+				$fields = $this->request_to_array($_REQUEST);
 
-				$title = $_REQUEST['title'];
-				if($title) {
-					$vcard->TITLE = $title;
-				}
-				else {
-					unset($vcard->TITLE);
-				}
-
-				$tel = $_REQUEST['tel'];
-				$tel_type = $_REQUEST['tel_type'];
-				if($tel) {
-					$i = 0;
-					unset($vcard->TEL);
-					foreach($tel as $item) {
-						if($item) {
-							$vcard->add('TEL', $item, ['type' => $tel_type[$i]]);
-						}
-						$i++;
-					}
-				}
-				else {
-					unset($vcard->TEL);
-				}
-
-				$email = $_REQUEST['email'];
-				$email_type = $_REQUEST['email_type'];
-				if($email) {
-					$i = 0;
-					unset($vcard->EMAIL);
-					foreach($email as $item) {
-						if($item) {
-							$vcard->add('EMAIL', $item, ['type' => $email_type[$i]]);
-						}
-						$i++;
-					}
-				}
-				else {
-					unset($vcard->EMAIL);
-				}
-
-				$impp = $_REQUEST['impp'];
-				$impp_type = $_REQUEST['impp_type'];
-				if($impp) {
-					$i = 0;
-					unset($vcard->IMPP);
-					foreach($impp as $item) {
-						if($item) {
-							$vcard->add('IMPP', $item, ['type' => $impp_type[$i]]);
-						}
-						$i++;
-					}
-				}
-				else {
-					unset($vcard->IMPP);
-				}
-
-				$url = $_REQUEST['url'];
-				$url_type = $_REQUEST['url_type'];
-				if($url) {
-					$i = 0;
-					unset($vcard->URL);
-					foreach($url as $item) {
-						if($item) {
-							$vcard->add('URL', $item, ['type' => $url_type[$i]]);
-						}
-						$i++;
-					}
-				}
-				else {
-					unset($vcard->URL);
-				}
-
-				$adr = $_REQUEST['adr'];
-				$adr_type = $_REQUEST['adr_type'];
-				if($adr) {
-					$i = 0;
-					unset($vcard->ADR);
-					foreach($adr as $item) {
-						if($item) {
-							$vcard->add('ADR', $item, ['type' => $adr_type[$i]]);
-						}
-						$i++;
-					}
-				}
-				else {
-					unset($vcard->ADR);
-				}
-
-				$note = $_REQUEST['note'];
-				if($note) {
-					$vcard->NOTE = $note;
-				}
-				else {
-					unset($vcard->NOTE);
-				}
+				process_cdav_card($fields, $vcard, true);
 
 				$cardData = $vcard->serialize();
 
 				$carddavBackend->updateCard($id, $uri, $cardData);
+				
+				build_sync_packet($channel['channel_id'], [
+					'addressbook' => [
+						'action' => 'update_card',
+						'uri' => $cdavdata['uri'],
+						'carduri' => $uri,
+						'card' => $cardData
+					]
+				]);
+
 			}
 
 			//delete addressbook card
@@ -784,12 +714,22 @@ class Cdav extends Controller {
 
 				$id = $_REQUEST['target'];
 
+				$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+
 				if(!cdav_perms($id,$addressbooks))
 					return;
 
 				$uri = $_REQUEST['uri'];
 
 				$carddavBackend->deleteCard($id, $uri);
+
+				build_sync_packet($channel['channel_id'], [
+					'addressbook' => [
+						'action' => 'delete_card',
+						'uri' => $cdavdata['uri'],
+						'carduri' => $uri
+					]
+				]);
 			}
 		}
 
@@ -799,6 +739,8 @@ class Cdav extends Controller {
 			$src = $_FILES['userfile']['tmp_name'];
 
 			if($src) {
+			    
+				$carddata = @file_get_contents($src);
 
 				if($_REQUEST['c_upload']) {
 					if($_REQUEST['target'] == 'channel_calendar') {
@@ -812,76 +754,39 @@ class Cdav extends Controller {
 						return;
 					}
 
-					$id = explode(':', $_REQUEST['target']);
+					$id = explode(':', $_REQUEST['target'])[0];
 					$ext = 'ics';
 					$table = 'calendarobjects';
 					$column = 'calendarid';
-					$objects = new \Sabre\VObject\Splitter\ICalendar(@file_get_contents($src));
+					$objects = new \Sabre\VObject\Splitter\ICalendar($carddata);
 					$profile = \Sabre\VObject\Node::PROFILE_CALDAV;
 					$backend = new \Sabre\CalDAV\Backend\PDO($pdo);
 				}
 
 				if($_REQUEST['a_upload']) {
-					$id[] = intval($_REQUEST['target']);
+					$id = intval($_REQUEST['target']);
 					$ext = 'vcf';
 					$table = 'cards';
 					$column = 'addressbookid';
-					$objects = new \Sabre\VObject\Splitter\VCard(@file_get_contents($src));
+					$objects = new \Sabre\VObject\Splitter\VCard($carddata);
 					$profile = \Sabre\VObject\Node::PROFILE_CARDDAV;
 					$backend = new \Sabre\CardDAV\Backend\PDO($pdo);
+					
+					$cdavdata = $this->get_cdav_data($id, 'addressbooks');
 				}
-
-				while ($object = $objects->getNext()) {
-
-					if($_REQUEST['a_upload']) {
-						$object = $object->convert(\Sabre\VObject\Document::VCARD40);
-					}
-
-					$ret = $object->validate($profile & \Sabre\VObject\Node::REPAIR);
-
-					//level 3 Means that the document is invalid,
-					//level 2 means a warning. A warning means it's valid but it could cause interopability issues,
-					//level 1 means that there was a problem earlier, but the problem was automatically repaired.
-
-					if($ret[0]['level'] < 3) {
-						do {
-							$duplicate = false;
-							$objectUri = random_string(40) . '.' . $ext;
-
-							$r = q("SELECT uri FROM $table WHERE $column = %d AND uri = '%s' LIMIT 1",
-								dbesc($id[0]),
-								dbesc($objectUri)
-							);
-
-							if (count($r))
-								$duplicate = true;
-						} while ($duplicate == true);
-
-						if($_REQUEST['c_upload']) {
-							$backend->createCalendarObject($id, $objectUri, $object->serialize());
-						}
-
-						if($_REQUEST['a_upload']) {
-							$backend->createCard($id[0], $objectUri, $object->serialize());
-						}
-					}
-					else {
-						if($_REQUEST['c_upload']) {
-							notice( '<strong>' . t('INVALID EVENT DISMISSED!') . '</strong>' . EOL .
-								'<strong>' . t('Summary: ') . '</strong>' . (($object->VEVENT->SUMMARY) ? $object->VEVENT->SUMMARY : t('Unknown')) . EOL .
-								'<strong>' . t('Date: ') . '</strong>' . (($object->VEVENT->DTSTART) ? $object->VEVENT->DTSTART : t('Unknown')) . EOL .
-								'<strong>' . t('Reason: ') . '</strong>' . $ret[0]['message'] . EOL
-							);
-						}
-
-						if($_REQUEST['a_upload']) {
-							notice( '<strong>' . t('INVALID CARD DISMISSED!') . '</strong>' . EOL .
-								'<strong>' . t('Name: ') . '</strong>' . (($object->FN) ? $object->FN : t('Unknown')) . EOL .
-								'<strong>' . t('Reason: ') . '</strong>' . $ret[0]['message'] . EOL
-							);
-						}
-					}
-				}
+				
+				$ids = [];
+				import_cdav_card($id, $ext, $table, $column, $objects, $profile, $backend, $ids, true);
+				
+				if(isset($cdavdata))
+				    build_sync_packet($channel['channel_id'], [
+				        'addressbook' => [
+				            'action' => 'import',
+				            'uri' => $cdavdata['uri'],
+				            'ids' => $ids,
+				            'card' => $carddata
+				        ]
+				    ]);
 			}
 			@unlink($src);
 		}
@@ -1408,7 +1313,19 @@ class Cdav extends Controller {
 			if(! cdav_perms($id,$addressbooks))
 				return;
 
+			// get metadata before we delete it
+			$cdavdata = $this->get_cdav_data($id, 'addressbooks');
+
 			$carddavBackend->deleteAddressBook($id);
+
+			if($cdavdata)
+				build_sync_packet($channel['channel_id'], [
+					'addressbook' => [
+						'action' => 'drop',
+						'uri' => $cdavdata['uri']
+					]
+				]);
+
 			killme();
 		}
 
@@ -1460,4 +1377,36 @@ class Cdav extends Controller {
 	}
 
 
+	function get_cdav_data($id, $table) {
+
+		$r = q("SELECT * FROM $table WHERE id = %d LIMIT 1",
+			intval($id)
+		);
+
+		if(! $r)
+			return false;
+
+		return $r[0];
+	}
+
+	function request_to_array($req) {
+
+		$f = [];
+
+ 		$f['org'] = $req['org'];
+		$f['title'] = $req['title'];
+		$f['tel'] = $req['tel'];
+		$f['tel_type'] = $req['tel_type'];
+		$f['email'] = $req['email'];
+		$f['email_type'] = $req['email_type'];
+		$f['impp'] = $req['impp'];
+		$f['impp_type'] = $req['impp_type'];
+		$f['url'] = $req['url'];
+		$f['url_type'] = $req['url_type'];
+		$f['adr'] = $req['adr'];
+		$f['adr_type'] = $req['adr_type'];
+		$f['note'] = $req['note'];
+
+		return $f;
+	}
 }
diff --git a/include/cdav.php b/include/cdav.php
new file mode 100644
index 000000000..d72caa442
--- /dev/null
+++ b/include/cdav.php
@@ -0,0 +1,186 @@
+<?php
+
+/**
+ * @brief Process CardDAV card
+ *
+ * @param array $f	fields array
+ * @param obj	$vcard	SabreDAV object
+ * @param bool	$edit	update card
+ *
+ */
+
+function process_cdav_card($f, &$vcard, $edit = false) {
+
+	if($f['org'])
+		$vcard->ORG = $f['org'];
+	else
+		if($edit)
+			unset($vcard->ORG);
+
+
+	if($f['title'])
+		$vcard->TITLE = $f['title'];
+	else
+		if($edit)
+			unset($vcard->TITLE);
+
+	if($edit)
+		unset($vcard->TEL);
+	if($f['tel']) {
+		$i = 0;
+		foreach($f['tel'] as $item) {
+			if($item) {
+				$vcard->add('TEL', $item, ['type' => $f['tel_type'][$i]]);
+			}
+			$i++;
+		}
+	}
+
+	if($edit)
+		unset($vcard->EMAIL);
+	if($f['email']) {
+		$i = 0;
+		foreach($f['email'] as $item) {
+			if($item) {
+				$vcard->add('EMAIL', $item, ['type' => $f['email_type'][$i]]);
+			}
+			$i++;
+		}
+	}
+
+	if($edit)
+		unset($vcard->IMPP);
+	if($f['impp']) {
+		$i = 0;
+		foreach($f['impp'] as $item) {
+			if($item) {
+				$vcard->add('IMPP', $item, ['type' => $f['impp_type'][$i]]);
+			}
+			$i++;
+		}
+	}
+
+	if($edit)
+		unset($vcard->URL);
+	if($f['url']) {
+		$i = 0;
+		foreach($f['url'] as $item) {
+			if($item) {
+				$vcard->add('URL', $item, ['type' => $f['url_type'][$i]]);
+			}
+			$i++;
+		}
+	}
+
+	if($edit)
+		unset($vcard->ADR);
+	if($f['adr']) {
+		$i = 0;
+		foreach($f['adr'] as $item) {
+			if($item) {
+				$vcard->add('ADR', $item, ['type' => $f['adr_type'][$i]]);
+			}
+			$i++;
+		}
+	}
+
+	if($f['note']) {
+		$vcard->NOTE = $f['note'];
+	}
+	else
+		if($edit)
+			unset($vcard->NOTE);
+}
+
+
+/**
+ * @brief Import CardDAV or CalDAV card
+ *
+ * @param int	$id		card id
+ * @param str	$ext	card extension
+ * @param str	$table	name
+ * @param str	$column name
+ * @param obj	$objects
+ * @param str	$profile
+ * @param obj	$backend
+ * @param array	$ids
+ * @param bool	$notice
+ *
+ */
+
+function import_cdav_card($id, $ext, $table, $column, $objects, $profile, $backend, &$ids, $notice = false) {
+
+	$i = 0;
+	$newid = (count($ids) ? false : true); 
+
+	while ($object = $objects->getNext()) {
+
+		if($_REQUEST['a_upload'])
+			$object = $object->convert(\Sabre\VObject\Document::VCARD40);
+
+		$ret = $object->validate($profile & \Sabre\VObject\Node::REPAIR);
+
+		//level 3 Means that the document is invalid,
+		//level 2 means a warning. A warning means it's valid but it could cause interopability issues,
+		//level 1 means that there was a problem earlier, but the problem was automatically repaired.
+
+		if($ret[0]['level'] < 3) {
+
+			if($newid) {
+				do {
+					$duplicate = false;
+					$objectUri = random_string(40) . '.' . $ext;
+
+					$r = q("SELECT uri FROM $table WHERE $column = %d AND uri = '%s' LIMIT 1",
+						dbesc($id),
+						dbesc($objectUri)
+					);
+					if (count($r))
+						$duplicate = true;
+				} while ($duplicate == true);
+				$ids[$i] = $objectUri;
+			}
+			else
+				$objectUri = $ids[$i];
+
+			$i++;
+
+			if($ext == 'ics')
+				$backend->createCalendarObject($id, $objectUri, $object->serialize());
+
+			if($ext == 'vcf')
+				$backend->createCard($id, $objectUri, $object->serialize());
+		}
+		else {
+			if($notice && $ext == 'ics') {
+				notice(
+					'<strong>' . t('INVALID EVENT DISMISSED!') . '</strong>' . EOL .
+					'<strong>' . t('Summary: ') . '</strong>' . (($object->VEVENT->SUMMARY) ? $object->VEVENT->SUMMARY : t('Unknown')) . EOL .
+					'<strong>' . t('Date: ') . '</strong>' . (($object->VEVENT->DTSTART) ? $object->VEVENT->DTSTART : t('Unknown')) . EOL .
+					'<strong>' . t('Reason: ') . '</strong>' . $ret[0]['message'] . EOL
+				);
+			}
+
+			if($notice && $exp == 'vcf') {
+				notice(
+					'<strong>' . t('INVALID CARD DISMISSED!') . '</strong>' . EOL .
+					'<strong>' . t('Name: ') . '</strong>' . (($object->FN) ? $object->FN : t('Unknown')) . EOL .
+					'<strong>' . t('Reason: ') . '</strong>' . $ret[0]['message'] . EOL
+				);
+			}
+		}
+	}
+}
+
+
+function get_cdav_id($principaluri, $uri, $table) {
+
+        $r = q("SELECT id FROM $table WHERE principaluri = '%s' AND uri = '%s' LIMIT 1",
+                dbesc($principaluri),
+                dbesc($uri)
+        );
+        if(! $r)
+                return false;
+
+        return $r[0]['id'];
+}
diff --git a/include/import.php b/include/import.php
index 6a3895b9f..0519052d8 100644
--- a/include/import.php
+++ b/include/import.php
@@ -1504,6 +1504,73 @@ function sync_files($channel, $files) {
 }
 
 /**
+ * @brief Synchronize addressbooks.
+ *
+ * @param array $channel
+ * @param array $data
+ */
+function sync_addressbook($channel, $data) {
+
+	if(! \Zotlabs\Lib\Apps::system_app_installed($channel['channel_id'], 'CardDAV'))
+		return;
+		
+	logger("debug: " . print_r($data,true), LOGGER_DEBUG);
+
+	require_once('include/cdav.php');
+
+	$principalUri = 'principals/' . $channel['channel_address'];
+	
+	if($data['action'] !== 'create') {
+	    $id = get_cdav_id($principalUri, $data['uri'], 'addressbooks');
+	    if(! $id)
+	        return;
+	}
+
+	$pdo = \DBA::$dba->db;
+
+	$carddavBackend = new \Sabre\CardDAV\Backend\PDO($pdo);
+	$addressbooks = $carddavBackend->getAddressBooksForUser($principalUri);
+
+	switch($data['action']) {
+
+		case 'create':
+			$carddavBackend->createAddressBook($principalUri, $data['uri'], $data['properties']);
+			break;
+
+		case 'drop':
+			$carddavBackend->deleteAddressBook($id);
+			break;
+
+		case 'edit':
+			$patch = new \Sabre\DAV\PropPatch($data['mutations']);
+			$carddavBackend->updateAddressBook($id, $patch);
+			$patch->commit();
+			break;
+
+		case 'delete_card':
+			$carddavBackend->deleteCard($id, $data['carduri']);
+			break;
+
+		case 'update_card':
+			$vcard = \Sabre\VObject\Reader::read($data['card']);
+			$object = $vcard->convert(\Sabre\VObject\Document::VCARD40);
+			$cardData = $vcard->serialize();
+			$carddavBackend->updateCard($id, $data['carduri'], $cardData);
+			break;
+
+		case 'import':
+			$objects = new \Sabre\VObject\Splitter\VCard($data['card']);
+			$profile = \Sabre\VObject\Node::PROFILE_CARDDAV;
+			import_cdav_card($id, 'vcf', 'cards', 'addressbookid', $objects, $profile, $carddavBackend, $data['ids']);
+			break;
+
+		default:
+			break;
+	}
+}
+
+
+/**
  * @brief Rename a key in an array.
  *
  * Replaces $old key with $new key in $arr.
diff --git a/include/zot.php b/include/zot.php
index d08146287..c02dab162 100644
--- a/include/zot.php
+++ b/include/zot.php
@@ -3611,6 +3611,9 @@ function process_channel_sync_delivery($sender, $arr, $deliveries) {
 		if(array_key_exists('app',$arr) && $arr['app'])
 			sync_apps($channel,$arr['app']);
 
+		if(array_key_exists('addressbook',$arr) && $arr['addressbook'])
+			sync_addressbook($channel,$arr['addressbook']);
+
 		if(array_key_exists('chatroom',$arr) && $arr['chatroom'])
 			sync_chatrooms($channel,$arr['chatroom']);