]> git.mxchange.org Git - friendica.git/blobdiff - include/diaspora.php
item_store: prevent storing a duplicate item with same uri+uid
[friendica.git] / include / diaspora.php
index 0ab46782917396e5514403b3c2eda0c815c7eef5..1ae8ca8006e3d4f3cf3551d7ac3e27c4266e1129 100644 (file)
@@ -5,34 +5,55 @@ require_once('include/items.php');
 require_once('include/bb2diaspora.php');
 require_once('include/contact_selectors.php');
 
+
+function diaspora_dispatch_public($msg) {
+
+       $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' ) AND `account_expired` = 0 ",
+               dbesc(NETWORK_DIASPORA),
+               dbesc($msg['author'])
+       );
+       if(count($r)) {
+               foreach($r as $rr) {
+                       logger('diaspora_public: delivering to: ' . $rr['username']);
+                       diaspora_dispatch($rr,$msg);
+               }
+       }
+       else
+               logger('diaspora_public: no subscribers');
+}
+
+
+
 function diaspora_dispatch($importer,$msg) {
 
+       $ret = 0;
+
        $parsed_xml = parse_xml_string($msg['message'],false);
 
        $xmlbase = $parsed_xml->post;
 
        if($xmlbase->request) {
-               diaspora_request($importer,$xmlbase->request);
+               $ret = diaspora_request($importer,$xmlbase->request);
        }
        elseif($xmlbase->status_message) {
-               diaspora_post($importer,$xmlbase->status_message);
+               $ret = diaspora_post($importer,$xmlbase->status_message);
        }
        elseif($xmlbase->comment) {
-               diaspora_comment($importer,$xmlbase->comment,$msg);
+               $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
        }
        elseif($xmlbase->like) {
-               diaspora_like($importer,$xmlbase->like,$msg);
+               $ret = diaspora_like($importer,$xmlbase->like,$msg);
        }
        elseif($xmlbase->retraction) {
-               diaspora_retraction($importer,$xmlbase->retraction,$msg);
+               $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
        }
        elseif($xmlbase->photo) {
-               diaspora_photo($importer,$xmlbase->photo,$msg);
+               $ret = diaspora_photo($importer,$xmlbase->photo,$msg);
        }
        else {
                logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
        }
-       return;
+       return $ret;
 }
 
 function diaspora_get_contact_by_handle($uid,$handle) {
@@ -47,6 +68,7 @@ function diaspora_get_contact_by_handle($uid,$handle) {
 }
 
 function find_diaspora_person_by_handle($handle) {
+       $update = false;
        $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
                dbesc(NETWORK_DIASPORA),
                dbesc($handle)
@@ -54,18 +76,14 @@ function find_diaspora_person_by_handle($handle) {
        if(count($r)) {
                // update record occasionally so it doesn't get stale
                $d = strtotime($r[0]['updated'] . ' +00:00');
-               if($d < strtotime('now - 14 days')) {
-                       q("delete from fcontact where id = %d limit 1",
-                               intval($r[0]['id'])
-                       );
-               }
-               else
+               if($d > strtotime('now - 14 days'))
                        return $r[0];
+               $update = true;
        }
        require_once('include/Scrape.php');
        $r = probe_url($handle, PROBE_DIASPORA);
        if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
-               add_fcontact($r);
+               add_fcontact($r,$update);
                return ($r);
        }
        return false;
@@ -82,9 +100,60 @@ function get_diaspora_key($uri) {
 }
 
 
-function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
+function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
+       $a = get_app();
+
+       logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
+
+       
+       $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+
+//     $b64_data = base64_encode($msg);
+//     $b64url_data = base64url_encode($b64_data);
+
+       $b64url_data = base64url_encode($msg);
+
+       $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
+
+       $type = 'application/xml';
+       $encoding = 'base64url';
+       $alg = 'RSA-SHA256';
+
+       $signable_data = $data  . '.' . base64url_encode($type) . '.' 
+               . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
+
+       $signature = rsa_sign($signable_data,$prvkey);
+       $sig = base64url_encode($signature);
+
+$magic_env = <<< EOT
+<?xml version='1.0' encoding='UTF-8'?>
+<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
+  <header>
+    <author_id>$handle</author_id>
+  </header>
+  <me:env>
+    <me:encoding>base64url</me:encoding>
+    <me:alg>RSA-SHA256</me:alg>
+    <me:data type="application/xml">$data</me:data>
+    <me:sig>$sig</me:sig>
+  </me:env>
+</diaspora>
+EOT;
+
+       logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
+       return $magic_env;
+
+}
+
+
+
+
+function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
        $a = get_app();
 
+       if($public)
+               return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
+
        logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
 
        $inner_aes_key = random_string(32);
@@ -97,7 +166,7 @@ function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
        $outer_iv = random_string(16);
        $b_outer_iv = base64_encode($outer_iv);
        
-       $handle = 'acct:' . $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+       $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 
        $padded_data = pkcs5_pad($msg,16);
        $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
@@ -106,16 +175,14 @@ function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
 
 
        $b64url_data = base64url_encode($b64_data);
-       $b64url_stripped = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
-    $lines = str_split($b64url_stripped,60);
-    $data = implode("\n",$lines);
-       $data = $data . (($data[-1] != "\n") ? "\n" : '') ;
-       $type = 'application/atom+xml';
+       $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
+
+       $type = 'application/xml';
        $encoding = 'base64url';
        $alg = 'RSA-SHA256';
 
-       $signable_data = $data  . '.' . base64url_encode($type) . "\n" . '.' 
-               . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
+       $signable_data = $data  . '.' . base64url_encode($type) . '.' 
+               . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 
        $signature = rsa_sign($signable_data,$prvkey);
        $sig = base64url_encode($signature);
@@ -124,10 +191,7 @@ $decrypted_header = <<< EOT
 <decrypted_header>
   <iv>$b_inner_iv</iv>
   <aes_key>$b_inner_aes_key</aes_key>
-  <author>
-    <name>{$user['username']}</name>
-    <uri>$handle</uri>
-  </author>
+  <author_id>$handle</author_id>
 </decrypted_header>
 EOT;
 
@@ -152,15 +216,15 @@ EOT;
 
 $magic_env = <<< EOT
 <?xml version='1.0' encoding='UTF-8'?>
-<entry xmlns='http://www.w3.org/2005/Atom'>
+<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
   $encrypted_header
-  <me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
+  <me:env>
     <me:encoding>base64url</me:encoding>
     <me:alg>RSA-SHA256</me:alg>
-    <me:data type="application/atom+xml">$data</me:data>
+    <me:data type="application/xml">$data</me:data>
     <me:sig>$sig</me:sig>
   </me:env>
-</entry>
+</diaspora>
 EOT;
 
        logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
@@ -185,50 +249,67 @@ EOT;
 
 function diaspora_decode($importer,$xml) {
 
+       $public = false;
        $basedom = parse_xml_string($xml);
 
-       $atom = $basedom->children(NAMESPACE_ATOM1);
+       $children = $basedom->children('https://joindiaspora.com/protocol');
 
-       // Diaspora devs: This is kind of sucky - 'encrypted_header' does not belong in the atom namespace
+       if($children->header) {
+               $public = true;
+               $author_link = str_replace('acct:','',$children->header->author_id);
+       }
+       else {
 
-       $encrypted_header = json_decode(base64_decode($atom->encrypted_header));
+               $encrypted_header = json_decode(base64_decode($children->encrypted_header));
        
-       $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
-       $ciphertext = base64_decode($encrypted_header->ciphertext);
+               $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
+               $ciphertext = base64_decode($encrypted_header->ciphertext);
+
+               $outer_key_bundle = '';
+               openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
+
+               $j_outer_key_bundle = json_decode($outer_key_bundle);
+
+               $outer_iv = base64_decode($j_outer_key_bundle->iv);
+               $outer_key = base64_decode($j_outer_key_bundle->key);
+
+               $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
 
-       $outer_key_bundle = '';
-       openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
 
-       $j_outer_key_bundle = json_decode($outer_key_bundle);
+               $decrypted = pkcs5_unpad($decrypted);
 
-       $outer_iv = base64_decode($j_outer_key_bundle->iv);
-       $outer_key = base64_decode($j_outer_key_bundle->key);
+               /**
+                * $decrypted now contains something like
+                *
+                *  <decrypted_header>
+                *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
+                *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 
-       $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
+***** OBSOLETE
 
+                *     <author>
+                *       <name>Ryan Hughes</name>
+                *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
+                *     </author>
 
-       $decrypted = pkcs5_unpad($decrypted);
+***** CURRENT
 
-       /**
-        * $decrypted now contains something like
-        *
-        *  <decrypted_header>
-        *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
-        *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
-        *     <author>
-        *       <name>Ryan Hughes</name>
-        *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
-        *     </author>
-        *  </decrypted_header>
-        */
+                *     <author_id>galaxor@diaspora.priateship.org</author_id>
 
-       logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
-       $idom = parse_xml_string($decrypted,false);
+***** END DIFFS
 
-       $inner_iv = base64_decode($idom->iv);
-       $inner_aes_key = base64_decode($idom->aes_key);
+                *  </decrypted_header>
+                */
 
-       $author_link = str_replace('acct:','',$idom->author->uri);
+               logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
+               $idom = parse_xml_string($decrypted,false);
+
+               $inner_iv = base64_decode($idom->iv);
+               $inner_aes_key = base64_decode($idom->aes_key);
+
+               $author_link = str_replace('acct:','',$idom->author_id);
+
+       }
 
        $dom = $basedom->children(NAMESPACE_SALMON_ME);
 
@@ -255,16 +336,6 @@ function diaspora_decode($importer,$xml) {
        // strip whitespace so our data element will return to one big base64 blob
        $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
 
-       // Add back the 60 char linefeeds
-
-       // This completely violates the entire principle of salmon magic signatures,
-       // which was to have a message signing format that was completely ambivalent to linefeeds 
-       // and transport whitespace mangling, and base64 wrapping rules. Guess what? PHP and Ruby 
-       // use different linelengths for base64 output. 
-
-    $lines = str_split($data,60);
-    $data = implode("\n",$lines);
-
 
        // stash away some other stuff for later
 
@@ -273,22 +344,25 @@ function diaspora_decode($importer,$xml) {
        $encoding = $base->encoding;
        $alg = $base->alg;
 
-       // I can't even begin to tell you how sucky this is. Please read the spec.
 
-       $signed_data = $data  . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
+       $signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 
 
        // decode the data
        $data = base64url_decode($data);
 
-       // Now pull out the inner encrypted blob
 
-       $inner_encrypted = base64_decode($data);
+       if($public) {
+               $inner_decrypted = $data;
+       }
+       else {
 
-       $inner_decrypted = 
-       $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
+               // Decode the encrypted blob
 
-       $inner_decrypted = pkcs5_unpad($inner_decrypted);
+               $inner_encrypted = base64_decode($data);
+               $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
+               $inner_decrypted = pkcs5_unpad($inner_decrypted);
+       }
 
        if(! $author_link) {
                logger('mod-diaspora: Could not retrieve author URI.');
@@ -321,7 +395,6 @@ function diaspora_decode($importer,$xml) {
 }
 
        
-
 function diaspora_request($importer,$xml) {
 
        $sender_handle = unxmlify($xml->sender_handle);
@@ -332,7 +405,6 @@ function diaspora_request($importer,$xml) {
         
        $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 
-
        if($contact) {
 
                // perhaps we were already sharing with this person. Now they're sharing with us.
@@ -357,13 +429,16 @@ function diaspora_request($importer,$xml) {
                return;
        }
 
-       $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
-               VALUES ( %d, '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
+       $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public');
+
+       $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
+               VALUES ( %d, '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
                intval($importer['uid']),
                dbesc($ret['network']),
                dbesc($ret['addr']),
                datetime_convert(),
                dbesc($ret['url']),
+               dbesc($batch),
                dbesc($ret['name']),
                dbesc($ret['nick']),
                dbesc($ret['photo']),
@@ -398,6 +473,7 @@ function diaspora_request($importer,$xml) {
 
 function diaspora_post($importer,$xml) {
 
+       $a = get_app();
        $guid = notags(unxmlify($xml->guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 
@@ -407,8 +483,7 @@ function diaspora_post($importer,$xml) {
 
        if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
                logger('diaspora_post: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $message_id = $diaspora_handle . ':' . $guid;
@@ -457,7 +532,14 @@ function diaspora_post($importer,$xml) {
        $datarray['body'] = $body;
        $datarray['app']  = 'Diaspora';
 
-       item_store($datarray);
+       $message_id = item_store($datarray);
+
+       if($message_id) {
+               q("update item set plink = '%s' where id = %d limit 1",
+                       dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
+                       intval($message_id)
+               );
+       }
 
        return;
 
@@ -465,6 +547,7 @@ function diaspora_post($importer,$xml) {
 
 function diaspora_comment($importer,$xml,$msg) {
 
+       $a = get_app();
        $guid = notags(unxmlify($xml->guid));
        $parent_guid = notags(unxmlify($xml->parent_guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
@@ -484,8 +567,7 @@ function diaspora_comment($importer,$xml,$msg) {
 
        if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
                logger('diaspora_comment: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
@@ -526,7 +608,7 @@ function diaspora_comment($importer,$xml,$msg) {
                }
        }
 
-       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
+       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
                logger('diaspora_comment: verification failed.');
                return;
        }
@@ -539,7 +621,7 @@ function diaspora_comment($importer,$xml,$msg) {
 
                $key = $msg['key'];
 
-               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
+               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
                        logger('diaspora_comment: owner verification failed.');
                        return;
                }
@@ -576,6 +658,13 @@ function diaspora_comment($importer,$xml,$msg) {
 
        $message_id = item_store($datarray);
 
+       if($message_id) {
+               q("update item set plink = '%s' where id = %d limit 1",
+                       dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
+                       intval($message_id)
+               );
+       }
+
        if(! $parent_author_signature) {
                q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
                        intval($message_id),
@@ -595,6 +684,7 @@ function diaspora_comment($importer,$xml,$msg) {
 
 function diaspora_photo($importer,$xml,$msg) {
 
+       $a = get_app();
        $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
 
        $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
@@ -616,8 +706,7 @@ function diaspora_photo($importer,$xml,$msg) {
 
        if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
                logger('diaspora_photo: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
@@ -669,8 +758,7 @@ function diaspora_like($importer,$xml,$msg) {
 
        if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
                logger('diaspora_like: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
@@ -726,7 +814,7 @@ function diaspora_like($importer,$xml,$msg) {
                }
        }
 
-       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
+       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
                logger('diaspora_like: verification failed.');
                return;
        }
@@ -739,7 +827,7 @@ function diaspora_like($importer,$xml,$msg) {
 
                $key = $msg['key'];
 
-               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
+               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
                        logger('diaspora_like: owner verification failed.');
                        return;
                }
@@ -805,6 +893,14 @@ EOT;
 
        $message_id = item_store($arr);
 
+
+       if($message_id) {
+               q("update item set plink = '%s' where id = %d limit 1",
+                       dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
+                       intval($message_id)
+               );
+       }
+
        if(! $parent_author_signature) {
                q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
                        intval($message_id),
@@ -852,7 +948,7 @@ function diaspora_retraction($importer,$xml) {
                }
        }
 
-       http_exit_status(202);
+       return 202;
        // NOTREACHED
 }
 
@@ -892,7 +988,7 @@ function diaspora_unshare($me,$contact) {
 
 
 
-function diaspora_send_status($item,$owner,$contact) {
+function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
 
        $a = get_app();
        $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
@@ -934,19 +1030,19 @@ function diaspora_send_status($item,$owner,$contact) {
 
        logger('diaspora_send_status: ' . $owner['username'] . ' -> ' . $contact['name'] . ' base message: ' . $msg, LOGGER_DATA);
 
-       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
-       $return_code = diaspora_transmit($owner,$contact,$slap);
+       $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
 
        if(count($images)) {
-               diaspora_send_images($item,$owner,$contact,$images);
+               diaspora_send_images($item,$owner,$contact,$images,$public_batch);
        }
 
        return $return_code;
 }
 
 
-function diaspora_send_images($item,$owner,$contact,$images) {
+function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
        $a = get_app();
        if(! count($images))
                return;
@@ -978,14 +1074,14 @@ function diaspora_send_images($item,$owner,$contact,$images) {
 
 
                logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
-               $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+               $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
-               diaspora_transmit($owner,$contact,$slap);
+               diaspora_transmit($owner,$contact,$slap,$public_batch);
        }
 
 }
 
-function diaspora_send_followup($item,$owner,$contact) {
+function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
 
        $a = get_app();
        $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
@@ -1019,7 +1115,7 @@ function diaspora_send_followup($item,$owner,$contact) {
        else
                $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
 
-       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
+       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
        $msg = replace_macros($tpl,array(
                '$guid' => xmlify($item['guid']),
@@ -1033,13 +1129,13 @@ function diaspora_send_followup($item,$owner,$contact) {
 
        logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
 
-       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
-       return(diaspora_transmit($owner,$contact,$slap));
+       return(diaspora_transmit($owner,$contact,$slap,$public_batch));
 }
 
 
-function diaspora_send_relay($item,$owner,$contact) {
+function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
 
 
        $a = get_app();
@@ -1106,7 +1202,7 @@ function diaspora_send_relay($item,$owner,$contact) {
                        else
                                $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
 
-                       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
+                       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
                        q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
                                intval($item['id']),
@@ -1120,7 +1216,7 @@ function diaspora_send_relay($item,$owner,$contact) {
 
        // sign it
 
-       $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
+       $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
        $msg = replace_macros($tpl,array(
                '$guid' => xmlify($item['guid']),
@@ -1135,15 +1231,15 @@ function diaspora_send_relay($item,$owner,$contact) {
 
        logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
 
-       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
-       return(diaspora_transmit($owner,$contact,$slap));
+       return(diaspora_transmit($owner,$contact,$slap,$public_batch));
 
 }
 
 
 
-function diaspora_send_retraction($item,$owner,$contact) {
+function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
 
        $a = get_app();
        $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
@@ -1155,32 +1251,35 @@ function diaspora_send_retraction($item,$owner,$contact) {
                '$handle' => $myaddr
        ));
 
-       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
-       return(diaspora_transmit($owner,$contact,$slap));
+       return(diaspora_transmit($owner,$contact,$slap,$public_batch));
 }
 
 
 
-function diaspora_transmit($owner,$contact,$slap) {
+function diaspora_transmit($owner,$contact,$slap,$public_batch) {
 
        $a = get_app();
-
-       post_url($contact['notify'] . '/',$slap);
+       $logid = random_string(4);
+       logger('diaspora_transmit: ' . $logid . ' ' . (($public_batch) ? $contact['batch'] : $contact['notify']));
+       post_url((($public_batch) ? $contact['batch'] : $contact['notify']) . '/',$slap);
        $return_code = $a->get_curl_code();
-       logger('diaspora_transmit: returns: ' . $return_code);
+       logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
 
-       if(! $return_code) {
+       if((! $return_code) || (($curl_stat == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
                logger('diaspora_transmit: queue message');
                // queue message for redelivery
-               q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`)
-                       VALUES ( %d, '%s', '%s', '%s') ",
+               q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`,`batch`)
+                       VALUES ( %d, '%s', '%s', '%s', %d) ",
                        intval($contact['id']),
                        dbesc(datetime_convert()),
                        dbesc(datetime_convert()),
-                       dbesc($slap)
+                       dbesc($slap),
+                       intval($public_batch)
                );
        }
 
+
        return(($return_code) ? $return_code : (-1));
 }