]> git.mxchange.org Git - friendica.git/blobdiff - include/diaspora.php
Merge remote branch 'upstream/master'
[friendica.git] / include / diaspora.php
index 5aadef884c362c13453cc374328b4ee3c155ce71..06df9c24a4513d2ddc27cd5de1c13a8e54a67db6 100644 (file)
@@ -2,6 +2,137 @@
 
 require_once('include/crypto.php');
 require_once('include/items.php');
+require_once('include/bb2diaspora.php');
+require_once('include/contact_selectors.php');
+require_once('include/queue_fn.php');
+
+
+function diaspora_dispatch_public($msg) {
+
+       $enabled = intval(get_config('system','diaspora_enabled'));
+       if(! $enabled) {
+               logger('mod-diaspora: disabled');
+               return;
+       }
+
+       $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' ) AND `account_expired` = 0 ",
+               dbesc(NETWORK_DIASPORA),
+               dbesc($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;
+
+       $enabled = intval(get_config('system','diaspora_enabled'));
+       if(! $enabled) {
+               logger('mod-diaspora: disabled');
+               return;
+       }
+
+       // php doesn't like dashes in variable names
+
+       $msg['message'] = str_replace(
+                       array('<activity_streams-photo>','</activity_streams-photo>'),
+                       array('<asphoto>','</asphoto>'),
+                       $msg['message']);
+
+
+       $parsed_xml = parse_xml_string($msg['message'],false);
+
+       $xmlbase = $parsed_xml->post;
+
+       logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
+
+
+       if($xmlbase->request) {
+               $ret = diaspora_request($importer,$xmlbase->request);
+       }
+       elseif($xmlbase->status_message) {
+               $ret = diaspora_post($importer,$xmlbase->status_message);
+       }
+       elseif($xmlbase->profile) {
+               $ret = diaspora_profile($importer,$xmlbase->profile);
+       }
+       elseif($xmlbase->comment) {
+               $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
+       }
+       elseif($xmlbase->like) {
+               $ret = diaspora_like($importer,$xmlbase->like,$msg);
+       }
+       elseif($xmlbase->asphoto) {
+               $ret = diaspora_asphoto($importer,$xmlbase->asphoto);
+       }
+       elseif($xmlbase->reshare) {
+               $ret = diaspora_reshare($importer,$xmlbase->reshare);
+       }
+       elseif($xmlbase->retraction) {
+               $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
+       }
+       elseif($xmlbase->signed_retraction) {
+               $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
+       }
+       elseif($xmlbase->photo) {
+               $ret = diaspora_photo($importer,$xmlbase->photo,$msg);
+       }
+       elseif($xmlbase->conversation) {
+               $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
+       }
+       elseif($xmlbase->message) {
+               $ret = diaspora_message($importer,$xmlbase->message,$msg);
+       }
+       else {
+               logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
+       }
+       return $ret;
+}
+
+function diaspora_get_contact_by_handle($uid,$handle) {
+       $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
+               dbesc(NETWORK_DIASPORA),
+               intval($uid),
+               dbesc($handle)
+       );
+       if($r && count($r))
+               return $r[0];
+       return false;
+}
+
+function find_diaspora_person_by_handle($handle) {
+       $update = false;
+       $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
+               dbesc(NETWORK_DIASPORA),
+               dbesc($handle)
+       );
+       if(count($r)) {
+               logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
+               // update record occasionally so it doesn't get stale
+               $d = strtotime($r[0]['updated'] . ' +00:00');
+               if($d > strtotime('now - 14 days'))
+                       return $r[0];
+               $update = true;
+       }
+       logger('find_diaspora_person_by_handle: refresh',LOGGER_DEBUG);
+       require_once('include/Scrape.php');
+       $r = probe_url($handle, PROBE_DIASPORA);
+       if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
+               add_fcontact($r,$update);
+               return ($r);
+       }
+       return false;
+}
+
 
 function get_diaspora_key($uri) {
        logger('Fetching diaspora key for: ' . $uri);
@@ -13,30 +144,80 @@ function get_diaspora_key($uri) {
 }
 
 
-function diaspora_base_message($type,$data) {
+function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
+       $a = get_app();
+
+       logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
 
-       $tpl = get_markup_template('diaspora_' . $type . '.tpl');
-       if(! $tpl) 
-               return '';
-       return replace_macros($tpl,$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,$pubkey) {
+
+
+function diaspora_msg_build($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);
+
+       // without a public key nothing will work
+
+       if(! $pubkey) {
+               logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
+               return '';
+       }
+
        $inner_aes_key = random_string(32);
        $b_inner_aes_key = base64_encode($inner_aes_key);
-       $inner_iv = random_string(32);
+       $inner_iv = random_string(16);
        $b_inner_iv = base64_encode($inner_iv);
 
        $outer_aes_key = random_string(32);
        $b_outer_aes_key = base64_encode($outer_aes_key);
-       $outer_iv = random_string(32);
+       $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, $inner_iv);
@@ -45,16 +226,14 @@ function diaspora_msg_build($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);
@@ -63,10 +242,7 @@ $decrypted_header = <<< EOT
 <decrypted_header>
   <iv>$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;
 
@@ -75,27 +251,34 @@ EOT;
        $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
 
        $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
+
        $encrypted_outer_key_bundle = '';
        openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
-       
+
        $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
+
+       logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
+
        $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle), 
                'ciphertext' => base64_encode($ciphertext)));
-       $encrypted_header = '<encrypted_header>' . base64_encode($encrypted_header_json_object) . '</encrypted_header>';
+       $cipher_json = base64_encode($encrypted_header_json_object);
+
+       $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
 
 $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);
        return $magic_env;
 
 }
@@ -117,49 +300,67 @@ 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);
+
+
+               $decrypted = pkcs5_unpad($decrypted);
 
-       $outer_key_bundle = '';
-       openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
+               /**
+                * $decrypted now contains something like
+                *
+                *  <decrypted_header>
+                *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
+                *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 
-       $j_outer_key_bundle = json_decode($outer_key_bundle);
+***** OBSOLETE
 
-       $outer_iv = base64_decode($j_outer_key_bundle->iv);
-       $outer_key = base64_decode($j_outer_key_bundle->key);
+                *     <author>
+                *       <name>Ryan Hughes</name>
+                *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
+                *     </author>
 
-       $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
+***** CURRENT
 
-       $decrypted = pkcs5_unpad($decrypted);
+                *     <author_id>galaxor@diaspora.priateship.org</author_id>
 
-       /**
-        * $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>
-        */
+***** END DIFFS
 
-       logger('decrypted: ' . $decrypted);
-       $idom = parse_xml_string($decrypted,false);
+                *  </decrypted_header>
+                */
 
-       $inner_iv = base64_decode($idom->iv);
-       $inner_aes_key = base64_decode($idom->aes_key);
+               logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
+               $idom = parse_xml_string($decrypted,false);
 
-       $author_link = str_replace('acct:','',$idom->author->uri);
+               $inner_iv = base64_decode($idom->iv);
+               $inner_aes_key = base64_decode($idom->aes_key);
+
+               $author_link = str_replace('acct:','',$idom->author_id);
+
+       }
 
        $dom = $basedom->children(NAMESPACE_SALMON_ME);
 
@@ -186,16 +387,6 @@ 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
-
-       // Diaspora devs: 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
 
@@ -204,22 +395,25 @@ function diaspora_decode($importer,$xml) {
        $encoding = $base->encoding;
        $alg = $base->alg;
 
-       // Diaspora devs: 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(! $author_link) {
                logger('mod-diaspora: Could not retrieve author URI.');
@@ -227,12 +421,10 @@ function diaspora_decode($importer,$xml) {
        }
 
        // Once we have the author URI, go to the web and try to find their public key
-       // *** or look it up locally ***
+       // (first this will look it up locally if it is in the fcontact cache)
+       // This will also convert diaspora public key from pkcs#1 to pkcs#8
 
        logger('mod-diaspora: Fetching key for ' . $author_link );
-
-       // Get diaspora public key (pkcs#1) and convert to pkcs#8
-
        $key = get_diaspora_key($author_link);
 
        if(! $key) {
@@ -253,46 +445,11 @@ function diaspora_decode($importer,$xml) {
 
 }
 
-function diaspora_get_contact_by_handle($uid,$handle) {
-       $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
-               dbesc(NETWORK_DIASPORA),
-               intval($uid),
-               dbesc($handle)
-       );
-       if($r && count($r))
-               return $r[0];
-       return false;
-}
-
-function find_diaspora_person_by_handle($handle) {
-       $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
-               dbesc(NETWORK_DIASPORA),
-               dbesc($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
-                       return $r[0];
-       }
-       require_once('include/Scrape.php');
-       $r = probe_url($handle, PROBE_DIASPORA);
-       if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
-               add_fcontact($r);
-               return ($r);
-       }
-       return false;
-}
-
        
-
 function diaspora_request($importer,$xml) {
 
+       $a = get_app();
+
        $sender_handle = unxmlify($xml->sender_handle);
        $recipient_handle = unxmlify($xml->recipient_handle);
 
@@ -301,38 +458,98 @@ 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.
                // That makes us friends.
 
-               if($contact['rel'] == CONTACT_IS_FOLLOWER) {
+               if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
                        q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
                                intval(CONTACT_IS_FRIEND),
                                intval($contact['id']),
                                intval($importer['uid'])
                        );
                }
-               // send notification?
+               // send notification
+
+               $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
+                       intval($importer['uid'])
+               );
+
+               if((count($r)) && (! $r[0]['hide-friends']) && (! $contact['hidden'])) {
+                       require_once('include/items.php');
+
+                       $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
+                               intval($importer['uid'])
+                       );
+
+                       // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
+
+                       if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
+
+                               $arr = array();
+                               $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']); 
+                               $arr['uid'] = $importer['uid'];
+                               $arr['contact-id'] = $self[0]['id'];
+                               $arr['wall'] = 1;
+                               $arr['type'] = 'wall';
+                               $arr['gravity'] = 0;
+                               $arr['origin'] = 1;
+                               $arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
+                               $arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
+                               $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
+                               $arr['verb'] = ACTIVITY_FRIEND;
+                               $arr['object-type'] = ACTIVITY_OBJ_PERSON;
+                               
+                               $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]';
+                               $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
+                               $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';
+                               $arr['body'] =  sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
+
+                               $arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
+                                       . '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
+                               $arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
+                               $arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
+                               $arr['object'] .= '</link></object>' . "\n";
+                               $arr['last-child'] = 1;
+
+                               $arr['allow_cid'] = $user[0]['allow_cid'];
+                               $arr['allow_gid'] = $user[0]['allow_gid'];
+                               $arr['deny_cid']  = $user[0]['deny_cid'];
+                               $arr['deny_gid']  = $user[0]['deny_gid'];
+
+                               $i = item_store($arr);
+                               if($i)
+                               proc_run('php',"include/notifier.php","activity","$i");
+
+                       }
+
+               }
+
                return;
        }
        
-       require_once('include/Scrape.php');
-       $ret = probe_url($sender_handle);
+       $ret = find_diaspora_person_by_handle($sender_handle);
+
 
        if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
                logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
                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');
+
+
+
+       $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
+               VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
                intval($importer['uid']),
                dbesc($ret['network']),
                dbesc($ret['addr']),
                datetime_convert(),
                dbesc($ret['url']),
+               dbesc(normalise_link($ret['url'])),
+               dbesc($batch),
                dbesc($ret['name']),
                dbesc($ret['nick']),
                dbesc($ret['photo']),
@@ -347,25 +564,88 @@ function diaspora_request($importer,$xml) {
 
        $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 
-       $hash = random_string() . (string) time();   // Generate a confirm_key
+       if(! $contact_record) {
+               logger('diaspora_request: unable to locate newly created contact record.');
+               return;
+       }
+
+       if($importer['page-flags'] == PAGE_NORMAL) {
+
+               $hash = random_string() . (string) time();   // Generate a confirm_key
        
-       if($contact_record) {
-               $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`,`blocked`)
-                       VALUES ( %d, %d, 1, %d, '%s', '%s', '%s', 0 )",
+               $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
+                       VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
                        intval($importer['uid']),
                        intval($contact_record['id']),
                        0,
+                       0,
                        dbesc( t('Sharing notification from Diaspora network')),
                        dbesc($hash),
                        dbesc(datetime_convert())
                );
        }
+       else {
+
+               // automatic friend approval
+
+               require_once('include/Photo.php');
+
+               $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']);
+               
+               // technically they are sharing with us (CONTACT_IS_SHARING), 
+               // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
+               // we are going to change the relationship and make them a follower.
+
+               if($importer['page-flags'] == PAGE_FREELOVE)
+                       $new_relation = CONTACT_IS_FRIEND;
+               else
+                       $new_relation = CONTACT_IS_FOLLOWER;
+
+               $r = q("UPDATE `contact` SET 
+                       `photo` = '%s', 
+                       `thumb` = '%s',
+                       `micro` = '%s', 
+                       `rel` = %d, 
+                       `name-date` = '%s', 
+                       `uri-date` = '%s', 
+                       `avatar-date` = '%s', 
+                       `blocked` = 0, 
+                       `pending` = 0
+                       WHERE `id` = %d LIMIT 1
+                       ",
+                       dbesc($photos[0]),
+                       dbesc($photos[1]),
+                       dbesc($photos[2]),
+                       intval($new_relation),
+                       dbesc(datetime_convert()),
+                       dbesc(datetime_convert()),
+                       dbesc(datetime_convert()),
+                       intval($contact_record['id'])
+               );
+
+               $u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
+               if($u)
+                       $ret = diaspora_share($u[0],$contact_record);
+       }
 
        return;
 }
 
+function diaspora_post_allow($importer,$contact) {
+       if(($contact['blocked']) || ($contact['readonly']))
+               return false;
+       if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
+               return true;
+       if($contact['rel'] == CONTACT_IS_FOLLOWER)
+               if($importer['page-flags'] == PAGE_COMMUNITY)
+                       return true;
+       return false;
+}
+
+
 function diaspora_post($importer,$xml) {
 
+       $a = get_app();
        $guid = notags(unxmlify($xml->guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 
@@ -373,10 +653,9 @@ function diaspora_post($importer,$xml) {
        if(! $contact)
                return;
 
-       if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
+       if(! diaspora_post_allow($importer,$contact)) {
                logger('diaspora_post: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $message_id = $diaspora_handle . ':' . $guid;
@@ -385,8 +664,10 @@ function diaspora_post($importer,$xml) {
                dbesc($message_id),
                dbesc($guid)
        );
-       if(count($r))
+       if(count($r)) {
+               logger('diaspora_post: message exists: ' . $guid);
                return;
+       }
 
     // allocate a guid on our system - we aren't fixing any collisions.
        // we're ignoring them
@@ -403,34 +684,46 @@ function diaspora_post($importer,$xml) {
        $created = unxmlify($xml->created_at);
        $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
 
-       $body = unxmlify($xml->raw_message);
+       $body = diaspora2bb($xml->raw_message);
 
-       require_once('library/HTMLPurifier.auto.php');
-       require_once('include/html2bbcode.php');
+       $datarray = array();
 
-       $maxlen = get_max_import_size();
-       if($maxlen && (strlen($body) > $maxlen))
-               $body = substr($body,0, $maxlen);
+       $str_tags = '';
 
-       if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
+       $tags = get_tags($body);
 
-               $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
-                       '[youtube]$1[/youtube]', $body);
+       if(count($tags)) {
+               foreach($tags as $tag) {
+                       if(strpos($tag,'#') === 0) {
+                               if(strpos($tag,'[url='))
+                                       continue;
 
-               $body = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
-                       '[youtube]$1[/youtube]', $body);
+                               // don't link tags that are already embedded in links
 
-               $body = oembed_html2bbcode($body);
+                               if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
+                                       continue;
+                               if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
+                                       continue;
 
-               $config = HTMLPurifier_Config::createDefault();
-               $config->set('Cache.DefinitionImpl', null);
-               $purifier = new HTMLPurifier($config);
-               $body = $purifier->purify($body);
+                               $basetag = str_replace('_',' ',substr($tag,1));
+                               $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
+                               if(strlen($str_tags))
+                                       $str_tags .= ',';
+                               $str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
+                               continue;
+                       }
+               }
+       }
 
-               $body = html2bbcode($body);
+       $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
+       if($cnt) {
+               foreach($matches as $mtch) {
+                       if(strlen($str_tags))
+                               $str_tags .= ',';
+                       $str_tags .= '@[url=' . $mtch[1] . '[/url]';    
+               }
        }
 
-       $datarray = array();
        $datarray['uid'] = $importer['uid'];
        $datarray['contact-id'] = $contact['id'];
        $datarray['wall'] = 0;
@@ -446,155 +739,816 @@ function diaspora_post($importer,$xml) {
        $datarray['author-link'] = $contact['url'];
        $datarray['author-avatar'] = $contact['thumb'];
        $datarray['body'] = $body;
+       $datarray['tag'] = $str_tags;
+       $datarray['app']  = 'Diaspora';
+
+       // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
+
+       $datarray['visible'] = ((strlen($body)) ? 1 : 0);
+
+       $message_id = item_store($datarray);
 
-       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;
 
 }
 
-function diaspora_comment($importer,$xml,$msg) {
+function diaspora_reshare($importer,$xml) {
 
+       logger('diaspora_reshare: init: ' . print_r($xml,true));
+
+       $a = get_app();
        $guid = notags(unxmlify($xml->guid));
-       $parent_guid = notags(unxmlify($xml->parent_guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
-       $target_type = notags(unxmlify($xml->target_type));
-       $text = unxmlify($xml->text);
-       $author_signature = notags(unxmlify($xml->author_signature));
-
-       $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
 
-       $text = $xml->text;
 
-       $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
        if(! $contact)
                return;
 
-       if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
-               logger('diaspora_comment: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+       if(! diaspora_post_allow($importer,$contact)) {
+               logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
+               return 202;
        }
 
-       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+       $message_id = $diaspora_handle . ':' . $guid;
+       $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
                intval($importer['uid']),
-               dbesc($parent_guid)
+               dbesc($message_id),
+               dbesc($guid)
        );
-       if(count($r)) {
-               logger('diaspora_comment: parent item not found: ' . $guid);
+       if(count($r)) {
+               logger('diaspora_reshare: message exists: ' . $guid);
                return;
        }
-       $parent_item = $r[0];
 
-       $author_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
+       $orig_author = notags(unxmlify($xml->root_diaspora_id));
+       $orig_guid = notags(unxmlify($xml->root_guid));
 
-       $author_signature = base64_decode($author_signature);
+       $source_url = 'https://' . substr($orig_author,strpos($orig_author,'@')+1) . '/p/' . $orig_guid . '.xml';
+       $x = fetch_url($source_url);
+       if(! $x)
+               $x = fetch_url(str_replace('https://','http://',$source_url));
+       if(! $x) {
+               logger('diaspora_reshare: unable to fetch source url ' . $source_url);
+               return;
+       }
+       logger('diaspora_reshare: source: ' . $x);
+
+       $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
+       $source_xml = parse_xml_string($x,false);
+
+       if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
+               $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
+               $body = scale_external_images($body,false);
+       }
+       elseif($source_xml->post->asphoto->image_url) {
+               $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
+               $body = scale_external_images($body);
+       }
+       elseif($source_xml->post->status_message) {
+               $body = diaspora2bb($source_xml->post->status_message->raw_message);
+               $body = scale_external_images($body);
 
-       if(stricmp($diaspora_handle,$msg['author']) == 0) {
-               $person = $contact;
-               $key = $msg['key'];
        }
        else {
-               $person = find_diaspora_person_by_handle($diaspora_handle);     
+               logger('diaspora_reshare: no reshare content found: ' . print_r($source_xml,true));
+               return;
+       }
+       if(! $body) {
+               logger('diaspora_reshare: empty body: source= ' . $x);
+               return;
+       }
+
+       $person = find_diaspora_person_by_handle($orig_author);
+
+       if(is_array($person) && x($person,'name') && x($person,'url'))
+               $details = '[url=' . $person['url'] . ']' . $person['name'] . '[/url]';
+       else
+               $details = $orig_author;
+       
+       $prefix = '&#x2672; ' . $details . "\n"; 
+
+
+    // allocate a guid on our system - we aren't fixing any collisions.
+       // we're ignoring them
+
+       $g = q("select * from guid where guid = '%s' limit 1",
+               dbesc($guid)
+       );
+       if(! count($g)) {
+               q("insert into guid ( guid ) values ( '%s' )",
+                       dbesc($guid)
+               );
+       }
+
+       $created = unxmlify($xml->created_at);
+       $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
+
+       $datarray = array();
+
+       $str_tags = '';
+
+       $tags = get_tags($body);
+
+       if(count($tags)) {
+               foreach($tags as $tag) {
+                       if(strpos($tag,'#') === 0) {
+                               if(strpos($tag,'[url='))
+                                       continue;
+
+                               // don't link tags that are already embedded in links
+
+                               if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
+                                       continue;
+                               if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
+                                       continue;
+
+
+                               $basetag = str_replace('_',' ',substr($tag,1));
+                               $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
+                               if(strlen($str_tags))
+                                       $str_tags .= ',';
+                               $str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
+                               continue;
+                       }
+               }
+       }
+       
+       $datarray['uid'] = $importer['uid'];
+       $datarray['contact-id'] = $contact['id'];
+       $datarray['wall'] = 0;
+       $datarray['guid'] = $guid;
+       $datarray['uri'] = $datarray['parent-uri'] = $message_id;
+       $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
+       $datarray['private'] = $private;
+       $datarray['parent'] = 0;
+       $datarray['owner-name'] = $contact['name'];
+       $datarray['owner-link'] = $contact['url'];
+       $datarray['owner-avatar'] = $contact['thumb'];
+       $datarray['author-name'] = $contact['name'];
+       $datarray['author-link'] = $contact['url'];
+       $datarray['author-avatar'] = $contact['thumb'];
+       $datarray['body'] = $prefix . $body;
+       $datarray['tag'] = $str_tags;
+       $datarray['app']  = 'Diaspora';
+
+       $message_id = item_store($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;
+
+}
+
+
+function diaspora_asphoto($importer,$xml) {
+       logger('diaspora_asphoto called');
+
+       $a = get_app();
+       $guid = notags(unxmlify($xml->guid));
+       $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
+
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
+       if(! $contact)
+               return;
+
+       if(! diaspora_post_allow($importer,$contact)) {
+               logger('diaspora_asphoto: Ignoring this author.');
+               return 202;
+       }
+
+       $message_id = $diaspora_handle . ':' . $guid;
+       $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
+               intval($importer['uid']),
+               dbesc($message_id),
+               dbesc($guid)
+       );
+       if(count($r)) {
+               logger('diaspora_asphoto: message exists: ' . $guid);
+               return;
+       }
+
+    // allocate a guid on our system - we aren't fixing any collisions.
+       // we're ignoring them
+
+       $g = q("select * from guid where guid = '%s' limit 1",
+               dbesc($guid)
+       );
+       if(! count($g)) {
+               q("insert into guid ( guid ) values ( '%s' )",
+                       dbesc($guid)
+               );
+       }
+
+       $created = unxmlify($xml->created_at);
+       $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
+
+       if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
+               $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
+               $body = scale_external_images($body,false);
+       }
+       elseif($xml->image_url) {
+               $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
+               $body = scale_external_images($body);
+       }
+       else {
+               logger('diaspora_asphoto: no photo url found.');
+               return;
+       }
+
+       $datarray = array();
+
+       
+       $datarray['uid'] = $importer['uid'];
+       $datarray['contact-id'] = $contact['id'];
+       $datarray['wall'] = 0;
+       $datarray['guid'] = $guid;
+       $datarray['uri'] = $datarray['parent-uri'] = $message_id;
+       $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
+       $datarray['private'] = $private;
+       $datarray['parent'] = 0;
+       $datarray['owner-name'] = $contact['name'];
+       $datarray['owner-link'] = $contact['url'];
+       $datarray['owner-avatar'] = $contact['thumb'];
+       $datarray['author-name'] = $contact['name'];
+       $datarray['author-link'] = $contact['url'];
+       $datarray['author-avatar'] = $contact['thumb'];
+       $datarray['body'] = $body;
+       
+       $datarray['app']  = 'Diaspora/Cubbi.es';
+
+       $message_id = item_store($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;
+
+}
+
+
+
+
+
+
+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));
+       $target_type = notags(unxmlify($xml->target_type));
+       $text = unxmlify($xml->text);
+       $author_signature = notags(unxmlify($xml->author_signature));
+
+       $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
+
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
+       if(! $contact) {
+               logger('diaspora_comment: cannot find contact: ' . $msg['author']);
+               return;
+       }
+
+       if(! diaspora_post_allow($importer,$contact)) {
+               logger('diaspora_comment: Ignoring this author.');
+               return 202;
+       }
+
+       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+               intval($importer['uid']),
+               dbesc($guid)
+       );
+       if(count($r)) {
+               logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
+               return;
+       }
+
+       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+               intval($importer['uid']),
+               dbesc($parent_guid)
+       );
+       if(! count($r)) {
+               logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
+               return;
+       }
+       $parent_item = $r[0];
+
+       $author_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
+
+       $author_signature = base64_decode($author_signature);
+
+       if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
+               $person = $contact;
+               $key = $msg['key'];
+       }
+       else {
+               $person = find_diaspora_person_by_handle($diaspora_handle);     
+
+               if(is_array($person) && x($person,'pubkey'))
+                       $key = $person['pubkey'];
+               else {
+                       logger('diaspora_comment: unable to find author details');
+                       return;
+               }
+       }
+
+       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
+               logger('diaspora_comment: verification failed.');
+               return;
+       }
+
+       if($parent_author_signature) {
+               $owner_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
+
+               $parent_author_signature = base64_decode($parent_author_signature);
+
+               $key = $msg['key'];
+
+               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
+                       logger('diaspora_comment: owner verification failed.');
+                       return;
+               }
+       }
+
+       // Phew! Everything checks out. Now create an item.
+
+       $body = diaspora2bb($text);
+
+       $message_id = $diaspora_handle . ':' . $guid;
+
+       $datarray = array();
+
+       $str_tags = '';
+
+       $tags = get_tags($body);
+
+       if(count($tags)) {
+               foreach($tags as $tag) {
+                       if(strpos($tag,'#') === 0) {
+                               if(strpos($tag,'[url='))
+                                       continue;
+
+                               // don't link tags that are already embedded in links
+
+                               if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
+                                       continue;
+                               if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
+                                       continue;
+
+
+                               $basetag = str_replace('_',' ',substr($tag,1));
+                               $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
+                               if(strlen($str_tags))
+                                       $str_tags .= ',';
+                               $str_tags .= '#[url=' . $a->get_baseurl() . '/search?search=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
+                               continue;
+                       }
+               }
+       }
+
+       $datarray['uid'] = $importer['uid'];
+       $datarray['contact-id'] = $contact['id'];
+       $datarray['wall'] = $parent_item['wall'];
+       $datarray['gravity'] = GRAVITY_COMMENT;
+       $datarray['guid'] = $guid;
+       $datarray['uri'] = $message_id;
+       $datarray['parent-uri'] = $parent_item['uri'];
+
+       // No timestamps for comments? OK, we'll the use current time.
+       $datarray['created'] = $datarray['edited'] = datetime_convert();
+       $datarray['private'] = $parent_item['private'];
+
+       $datarray['owner-name'] = $parent_item['owner-name'];
+       $datarray['owner-link'] = $parent_item['owner-link'];
+       $datarray['owner-avatar'] = $parent_item['owner-avatar'];
+
+       $datarray['author-name'] = $person['name'];
+       $datarray['author-link'] = $person['url'];
+       $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
+       $datarray['body'] = $body;
+       $datarray['tag'] = $str_tags;
+
+       // We can't be certain what the original app is if the message is relayed.
+       if(($parent_item['origin']) && (! $parent_author_signature)) 
+               $datarray['app']  = 'Diaspora';
+
+       $message_id = item_store($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_item['origin']) && (! $parent_author_signature)) {
+               q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
+                       intval($message_id),
+                       dbesc($author_signed_data),
+                       dbesc(base64_encode($author_signature)),
+                       dbesc($diaspora_handle)
+               );
+
+               // if the message isn't already being relayed, notify others
+               // the existence of parent_author_signature means the parent_author or owner
+               // is already relaying.
+
+               proc_run('php','include/notifier.php','comment',$message_id);
+       }
+
+       $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
+               dbesc($parent_item['uri']),
+               intval($importer['uid'])
+       );
+
+       if(count($myconv)) {
+               $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
+
+               foreach($myconv as $conv) {
+
+                       // now if we find a match, it means we're in this conversation
+       
+                       if(! link_compare($conv['author-link'],$importer_url))
+                               continue;
+
+                       require_once('include/enotify.php');
+                                                               
+                       $conv_parent = $conv['parent'];
+
+                       notification(array(
+                               'type'         => NOTIFY_COMMENT,
+                               'notify_flags' => $importer['notify-flags'],
+                               'language'     => $importer['language'],
+                               'to_name'      => $importer['username'],
+                               'to_email'     => $importer['email'],
+                               'uid'          => $importer['uid'],
+                               'item'         => $datarray,
+                               'link'             => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id,
+                               'source_name'  => $datarray['author-name'],
+                               'source_link'  => $datarray['author-link'],
+                               'source_photo' => $datarray['author-avatar'],
+                               'verb'         => ACTIVITY_POST,
+                               'otype'        => 'item',
+                               'parent'       => $conv_parent,
+
+                       ));
+
+                       // only send one notification
+                       break;
+               }
+       }
+       return;
+}
+
+
+
+
+function diaspora_conversation($importer,$xml,$msg) {
+
+       $a = get_app();
+
+       $guid = notags(unxmlify($xml->guid));
+       $subject = notags(unxmlify($xml->subject));
+       $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
+       $participant_handles = notags(unxmlify($xml->participant_handles));
+       $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
+
+       $parent_uri = $diaspora_handle . ':' . $guid;
+       $messages = $xml->message;
+
+       if(! count($messages)) {
+               logger('diaspora_conversation: empty conversation');
+               return;
+       }
+
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
+       if(! $contact) {
+               logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
+               return;
+       }
+
+       if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
+               logger('diaspora_conversation: Ignoring this author.');
+               return 202;
+       }
+
+       $conversation = null;
+
+       $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
+               intval($importer['uid']),
+               dbesc($guid)
+       );
+       if(count($c))
+               $conversation = $c[0];
+       else {
+               $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
+                       intval($importer['uid']),
+                       dbesc($guid),
+                       dbesc($diaspora_handle),
+                       dbesc(datetime_convert('UTC','UTC',$created_at)),
+                       dbesc(datetime_convert()),
+                       dbesc($subject),
+                       dbesc($participant_handles)
+               );
+               if($r)
+                       $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
+               intval($importer['uid']),
+           dbesc($guid)
+       );
+           if(count($c))
+           $conversation = $c[0];
+       }
+       if(! $conversation) {
+               logger('diaspora_conversation: unable to create conversation.');
+               return;
+       }
+
+       foreach($messages as $mesg) {
+
+               $reply = 0;
+
+               $msg_guid = notags(unxmlify($mesg->guid));
+               $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
+               $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
+               $msg_author_signature = notags(unxmlify($mesg->author_signature));
+               $msg_text = unxmlify($mesg->text);
+               $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
+               $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
+               $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
+               if($msg_conversation_guid != $guid) {
+                       logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
+                       continue;
+               }
+
+               $body = diaspora2bb($msg_text);
+               $message_id = $msg_diaspora_handle . ':' . $msg_guid;
+
+               $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
+
+               $author_signature = base64_decode($msg_author_signature);
+
+               if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
+                       $person = $contact;
+                       $key = $msg['key'];
+               }
+               else {
+                       $person = find_diaspora_person_by_handle($msg_diaspora_handle); 
+
+                       if(is_array($person) && x($person,'pubkey'))
+                               $key = $person['pubkey'];
+                       else {
+                               logger('diaspora_conversation: unable to find author details');
+                               continue;
+                       }
+               }
+
+               if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
+                       logger('diaspora_conversation: verification failed.');
+                       continue;
+               }
+
+               if($msg_parent_author_signature) {
+                       $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
+
+                       $parent_author_signature = base64_decode($msg_parent_author_signature);
+
+                       $key = $msg['key'];
+
+                       if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
+                               logger('diaspora_conversation: owner verification failed.');
+                               continue;
+                       }
+               }
+
+               $r = q("select id from mail where `uri` = '%s' limit 1",
+                       dbesc($message_id)
+               );
+               if(count($r)) {
+                       logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
+                       continue;
+               }
+
+               q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
+                       intval($importer['uid']),
+                       dbesc($msg_guid),
+                       intval($conversation['id']),
+                       dbesc($person['name']),
+                       dbesc($person['photo']),
+                       dbesc($person['url']),
+                       intval($contact['id']),  
+                       dbesc($subject),
+                       dbesc($body),
+                       0,
+                       0,
+                       dbesc($message_id),
+                       dbesc($parent_uri),
+                       dbesc($msg_created_at)
+               );                      
+
+               q("update conv set updated = '%s' where id = %d limit 1",
+                       dbesc(datetime_convert()),
+                       intval($conversation['id'])
+               );              
+
+               require_once('include/enotify.php');
+               notification(array(                     
+                       'type' => NOTIFY_MAIL,
+                       'notify_flags' => $importer['notify-flags'],
+                       'language' => $importer['language'],
+                       'to_name' => $importer['username'],
+                       'to_email' => $importer['email'],
+                       'uid' =>$importer['importer_uid'],
+                       'item' => array('subject' => $subject, 'body' => $body),
+                       'source_name' => $person['name'],
+                       'source_link' => $person['url'],
+                       'source_photo' => $person['thumb'],
+                       'verb' => ACTIVITY_POST,
+                       'otype' => 'mail'
+               ));
+       }       
+
+       return;
+}
+
+function diaspora_message($importer,$xml,$msg) {
+
+       $a = get_app();
+
+       $msg_guid = notags(unxmlify($xml->guid));
+       $msg_parent_guid = notags(unxmlify($xml->parent_guid));
+       $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
+       $msg_author_signature = notags(unxmlify($xml->author_signature));
+       $msg_text = unxmlify($xml->text);
+       $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
+       $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
+       $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
+
+       $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
+       if(! $contact) {
+               logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
+               return;
+       }
+
+       if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
+               logger('diaspora_message: Ignoring this author.');
+               return 202;
+       }
+
+       $conversation = null;
+
+       $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
+               intval($importer['uid']),
+               dbesc($msg_conversation_guid)
+       );
+       if(count($c))
+               $conversation = $c[0];
+       else {
+               logger('diaspora_message: conversation not available.');
+               return;
+       }
+
+       $reply = 0;
+                       
+       $body = diaspora2bb($msg_text);
+       $message_id = $msg_diaspora_handle . ':' . $msg_guid;
+
+       $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
+
+
+       $author_signature = base64_decode($msg_author_signature);
 
-               if(is_array($person) && x($person,'pubkey'))
-                       $key = $person['pubkey'];
-               else {
-                       logger('diaspora_comment: unable to find author details');
-                       return;
-               }
+       $person = find_diaspora_person_by_handle($msg_diaspora_handle); 
+       if(is_array($person) && x($person,'pubkey'))
+               $key = $person['pubkey'];
+       else {
+               logger('diaspora_message: unable to find author details');
+               return;
        }
 
-       if(! rsa_verify($author_signed_data,$author_signature,$key)) {
-               logger('diaspora_comment: verification failed.');
+       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
+               logger('diaspora_message: verification failed.');
                return;
        }
 
+       $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
+               dbesc($message_id),
+               intval($importer['uid'])
+       );
+       if(count($r)) {
+               logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
+               return;
+       }
 
-       if($parent_author_signature) {
-               $owner_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $msg['author'];
+       q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
+               intval($importer['uid']),
+               dbesc($msg_guid),
+               intval($conversation['id']),
+               dbesc($person['name']),
+               dbesc($person['photo']),
+               dbesc($person['url']),
+               intval($contact['id']),  
+               dbesc($conversation['subject']),
+               dbesc($body),
+               0,
+               1,
+               dbesc($message_id),
+               dbesc($parent_uri),
+               dbesc($msg_created_at)
+       );                      
+
+       q("update conv set updated = '%s' where id = %d limit 1",
+               dbesc(datetime_convert()),
+               intval($conversation['id'])
+       );              
+       
+       return;
+}
 
-               $parent_author_signature = base64_decode($parent_author_signature);
 
-               $key = $msg['key'];
+function diaspora_photo($importer,$xml,$msg) {
 
-               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key)) {
-                       logger('diaspora_comment: owner verification failed.');
-                       return;
-               }
-       }
+       $a = get_app();
 
-       // Phew! Everything checks out. Now create an item.
+       logger('diaspora_photo: init',LOGGER_DEBUG);
 
-       require_once('library/HTMLPurifier.auto.php');
-       require_once('include/html2bbcode.php');
+       $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
 
-       $body = $text;
+       $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
 
-       $maxlen = get_max_import_size();
-       if($maxlen && (strlen($body) > $maxlen))
-               $body = substr($body,0, $maxlen);
+       $status_message_guid = notags(unxmlify($xml->status_message_guid));
 
-       if((strpos($body,'<') !== false) || (strpos($body,'>') !== false)) {
+       $guid = notags(unxmlify($xml->guid));
 
-               $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
-                       '[youtube]$1[/youtube]', $body);
+       $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 
-               $body = preg_replace('#<iframe[^>].+?' . 'http://www.youtube.com/embed/([A-Za-z0-9\-_=]+).+?</iframe>#s',
-                       '[youtube]$1[/youtube]', $body);
+       $public = notags(unxmlify($xml->public));
 
-               $body = oembed_html2bbcode($body);
+       $created_at = notags(unxmlify($xml_created_at));
 
-               $config = HTMLPurifier_Config::createDefault();
-               $config->set('Cache.DefinitionImpl', null);
-               $purifier = new HTMLPurifier($config);
-               $body = $purifier->purify($body);
+       logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
 
-               $body = html2bbcode($body);
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
+       if(! $contact) {
+               logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
+               return;
        }
 
-       $message_id = $diaspora_handle . ':' . $guid;
-
-       $datarray = array();
-       $datarray['uid'] = $importer['uid'];
-       $datarray['contact-id'] = $contact['id'];
-       $datarray['wall'] = $parent_item['wall'];
-       $datarray['gravity'] = GRAVITY_COMMENT;
-       $datarray['guid'] = $guid;
-       $datarray['uri'] = $message_id;
-       $datarray['parent-uri'] = $parent_item['uri'];
+       if(! diaspora_post_allow($importer,$contact)) {
+               logger('diaspora_photo: Ignoring this author.');
+               return 202;
+       }
 
-       // No timestamps for comments? OK, we'll the use current time.
-       $datarray['created'] = $datarray['edited'] = datetime_convert();
-       $datarray['private'] = $parent_item['private'];
+       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
+               intval($importer['uid']),
+               dbesc($status_message_guid)
+       );
+       if(! count($r)) {
+               logger('diaspora_photo: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
+               return;
+       }
 
-       $datarray['owner-name'] = $contact['name'];
-       $datarray['owner-link'] = $contact['url'];
-       $datarray['owner-avatar'] = $contact['thumb'];
+       $parent_item = $r[0];
 
-       $datarray['author-name'] = $person['name'];
-       $datarray['author-link'] = $person['url'];
-       $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
-       $datarray['body'] = $body;
+       $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
 
-       $message_id = item_store($datarray);
+       $link_text = scale_external_images($link_text);
 
-       if(! $parent_author_signature) {
-               q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
-                       intval($message_id),
-                       dbesc($author_signed_data),
-                       dbesc(base64_encode($author_signature)),
-                       dbesc($diaspora_handle)
+       if(strpos($parent_item['body'],$link_text) === false) {
+               $r = q("update item set `body` = '%s', `visible` = 1 where `id` = %d and `uid` = %d limit 1",
+                       dbesc($link_text . $parent_item['body']),
+                       intval($parent_item['id']),
+                       intval($parent_item['uid'])
                );
        }
 
-       // notify others
        return;
-
 }
 
+
+
+
 function diaspora_like($importer,$xml,$msg) {
 
+       $a = get_app();
        $guid = notags(unxmlify($xml->guid));
        $parent_guid = notags(unxmlify($xml->parent_guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
@@ -610,13 +1564,14 @@ function diaspora_like($importer,$xml,$msg) {
                return;
 
        $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
-       if(! $contact)
+       if(! $contact) {
+               logger('diaspora_like: cannot find contact: ' . $msg['author']);
                return;
+       }
 
-       if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
+       if(! diaspora_post_allow($importer,$contact)) {
                logger('diaspora_like: Ignoring this author.');
-               http_status_exit(202);
-               // NOTREACHED
+               return 202;
        }
 
        $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
@@ -630,7 +1585,7 @@ function diaspora_like($importer,$xml,$msg) {
 
        $parent_item = $r[0];
 
-       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '$s' LIMIT 1",
+       $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
                intval($importer['uid']),
                dbesc($guid)
        );
@@ -654,11 +1609,11 @@ function diaspora_like($importer,$xml,$msg) {
                return; 
        }
 
-       $author_signed_data = $guid . ';' . $parent_guid . ';' . $target_type . ';' . $positive . ';' . $diaspora_handle;
+       $author_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
 
        $author_signature = base64_decode($author_signature);
 
-       if(stricmp($diaspora_handle,$msg['author']) == 0) {
+       if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
                $person = $contact;
                $key = $msg['key'];
        }
@@ -667,24 +1622,25 @@ function diaspora_like($importer,$xml,$msg) {
                if(is_array($person) && x($person,'pubkey'))
                        $key = $person['pubkey'];
                else {
-                       logger('diaspora_comment: unable to find author details');
+                       logger('diaspora_like: unable to find author details');
                        return;
                }
        }
 
-       if(! rsa_verify($author_signed_data,$author_signature,$key)) {
+       if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
                logger('diaspora_like: verification failed.');
                return;
        }
 
        if($parent_author_signature) {
-               $owner_signed_data = $guid . ';' . $parent_guid . ';' . $target_type . ';' . $positive . ';' . $msg['author'];
+
+               $owner_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
 
                $parent_author_signature = base64_decode($parent_author_signature);
 
                $key = $msg['key'];
 
-               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key)) {
+               if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
                        logger('diaspora_like: owner verification failed.');
                        return;
                }
@@ -717,6 +1673,7 @@ EOT;
 
        $arr['uri'] = $uri;
        $arr['uid'] = $importer['uid'];
+       $arr['guid'] = $guid;
        $arr['contact-id'] = $contact['id'];
        $arr['type'] = 'activity';
        $arr['wall'] = $parent_item['wall'];
@@ -724,19 +1681,21 @@ EOT;
        $arr['parent'] = $parent_item['id'];
        $arr['parent-uri'] = $parent_item['uri'];
 
-       $datarray['owner-name'] = $contact['name'];
-       $datarray['owner-link'] = $contact['url'];
-       $datarray['owner-avatar'] = $contact['thumb'];
+       $arr['owner-name'] = $parent_item['name'];
+       $arr['owner-link'] = $parent_item['url'];
+       $arr['owner-avatar'] = $parent_item['thumb'];
 
-       $datarray['author-name'] = $person['name'];
-       $datarray['author-link'] = $person['url'];
-       $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
+       $arr['author-name'] = $person['name'];
+       $arr['author-link'] = $person['url'];
+       $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
        
        $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
        $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
        $plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
        $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
 
+       $arr['app']  = 'Diaspora';
+
        $arr['private'] = $parent_item['private'];
        $arr['verb'] = $activity;
        $arr['object-type'] = $objtype;
@@ -747,6 +1706,14 @@ 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),
@@ -756,27 +1723,168 @@ EOT;
                );
        }
 
-       // FIXME send notification
+       // if the message isn't already being relayed, notify others
+       // the existence of parent_author_signature means the parent_author or owner
+       // is already relaying. The parent_item['origin'] indicates the message was created on our system
+
+       if(($parent_item['origin']) && (! $parent_author_signature))
+               proc_run('php','include/notifier.php','comment',$message_id);
 
        return;
 }
 
 function diaspora_retraction($importer,$xml) {
 
+
        $guid = notags(unxmlify($xml->guid));
        $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
+       $type = notags(unxmlify($xml->type));
+
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
+       if(! $contact)
+               return;
+
+       if($type === 'Person') {
+               require_once('include/Contact.php');
+               contact_remove($contact['id']);
+       }
+       elseif($type === 'Post') {
+               $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
+                       dbesc('guid'),
+                       intval($importer['uid'])
+               );
+               if(count($r)) {
+                       if(link_compare($r[0]['author-link'],$contact['url'])) {
+                               q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d limit 1",
+                                       dbesc(datetime_convert()),                      
+                                       intval($r[0]['id'])
+                               );
+                       }
+               }
+       }
+
+       return 202;
+       // NOTREACHED
+}
+
+function diaspora_signed_retraction($importer,$xml,$msg) {
+
+
+       $guid = notags(unxmlify($xml->target_guid));
+       $diaspora_handle = notags(unxmlify($xml->sender_handle));
+       $type = notags(unxmlify($xml->target_type));
+       $sig = notags(unxmlify($xml->target_author_signature));
+
+       $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
+       if(! $contact) {
+               logger('diaspora_signed_retraction: no contact');
+               return;
+       }
+
+       // this may not yet work for comments. Need to see how the relaying works
+       // and figure out who signs it.
+
+
+       $signed_data = $guid . ';' . $type ;
+
+       $sig = base64_decode($sig);
+
+       $key = $msg['key'];
+
+       if(! rsa_verify($signed_data,$sig,$key,'sha256')) {
+               logger('diaspora_signed_retraction: owner verification failed.' . print_r($msg,true));
+               return;
+       }
+
+       if($type === 'StatusMessage') {
+               $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
+                       dbesc($guid),
+                       intval($importer['uid'])
+               );
+               if(count($r)) {
+                       if(link_compare($r[0]['author-link'],$contact['url'])) {
+                               q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d limit 1",
+                                       dbesc(datetime_convert()),                      
+                                       intval($r[0]['id'])
+                               );
+                       }
+               }
+       }
+       else
+               logger('diaspora_signed_retraction: unknown type: ' . $type);
+
+       return 202;
+       // NOTREACHED
+}
+
+function diaspora_profile($importer,$xml) {
+
+       $a = get_app();
+       $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 
        $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
        if(! $contact)
                return;
 
-//     if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { 
-//             logger('diaspora_retraction: Ignoring this author.');
-//             http_status_exit(202);
-//             // NOTREACHED
-//     }
+       if($contact['blocked']) {
+               logger('diaspora_post: Ignoring this author.');
+               return 202;
+       }
+
+       $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
+       $image_url = unxmlify($xml->image_url);
+       $birthday = unxmlify($xml->birthday);
+
+       $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
+               intval($importer['uid']),
+               intval($contact['id'])
+       );
+       $oldphotos = ((count($r)) ? $r : null);
+
+       require_once('include/Photo.php');
 
+       $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
+       
+       // Generic birthday. We don't know the timezone. The year is irrelevant. 
+
+       $birthday = str_replace('1000','1901',$birthday);
+
+       $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
+
+       // this is to prevent multiple birthday notifications in a single year
+       // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
+
+       if(substr($birthday,5) === substr($contact['bd'],5))
+               $birthday = $contact['bd'];
+
+       // TODO: update name on item['author-name'] if the name changed. See consume_feed()
+       // Not doing this currently because D* protocol is scheduled for revision soon. 
+
+       $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
+               dbesc($name),
+               dbesc(datetime_convert()),
+               dbesc($images[0]),
+               dbesc($images[1]),
+               dbesc($images[2]),
+               dbesc(datetime_convert()),
+               dbesc($birthday),
+               intval($contact['id']),
+               intval($importer['uid'])
+       ); 
+
+       if($r) {
+               if($oldphotos) {
+                       foreach($oldphotos as $ph) {
+                               q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
+                                       intval($importer['uid']),
+                                       intval($contact['id']),
+                                       dbesc($ph['resource-id'])
+                               );
+                       }
+               }
+       }       
 
+       return;
 
 }
 
@@ -787,29 +1895,89 @@ function diaspora_share($me,$contact) {
 
        $tpl = get_markup_template('diaspora_share.tpl');
        $msg = replace_macros($tpl, array(
-               '$sender' => myaddr,
+               '$sender' => $myaddr,
                '$recipient' => $theiraddr
        ));
 
-       $slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
+
+       return(diaspora_transmit($owner,$contact,$slap, false));
+}
+
+function diaspora_unshare($me,$contact) {
+
+       $a = get_app();
+       $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+
+       $tpl = get_markup_template('diaspora_retract.tpl');
+       $msg = replace_macros($tpl, array(
+               '$guid'   => $me['guid'],
+               '$type'   => 'Person',
+               '$handle' => $myaddr
+       ));
+
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
+
+       return(diaspora_transmit($owner,$contact,$slap, false));
 
-       post_url($contact['notify'],$slap);
-       $return_code = $a->get_curl_code();
-       return $return_code;
 }
 
-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);
        $theiraddr = $contact['addr'];
-       require_once('include/bbcode.php');
 
-       $body = xmlify(bbcode($item['body']));
+       $images = array();
+
+       $title = $item['title'];
+       $body = $item['body'];
+
+/*
+       // We're trying to match Diaspora's split message/photo protocol but
+       // all the photos are displayed on D* as links and not img's - even
+       // though we're sending pretty much precisely what they send us when
+       // doing the same operation.  
+       // Commented out for now, we'll use bb2diaspora to convert photos to markdown
+       // which seems to get through intact.
+
+       $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
+       if($cnt) {
+               foreach($matches as $mtch) {
+                       $detail = array();
+                       $detail['str'] = $mtch[0];
+                       $detail['path'] = dirname($mtch[1]) . '/';
+                       $detail['file'] = basename($mtch[1]);
+                       $detail['guid'] = $item['guid'];
+                       $detail['handle'] = $myaddr;
+                       $images[] = $detail;
+                       $body = str_replace($detail['str'],$mtch[1],$body);
+               }
+       }       
+*/
+       $body = xmlify(html_entity_decode(bb2diaspora($body)));
+
+       if(strlen($title))
+               $body = xmlify('**' . html_entity_decode($title) . '**' . "\n") . $body;
+
+
+       if($item['attach']) {
+               $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
+               if(cnt) {
+                       $body .= "\n" . t('Attachments:') . "\n";
+                       foreach($matches as $mtch) {
+                               $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
+                       }
+               }
+       }       
+
+
        $public = (($item['private']) ? 'false' : 'true');
 
        require_once('include/datetime.php');
-       $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d h:i:s \U\T\C');
+       $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
 
        $tpl = get_markup_template('diaspora_post.tpl');
        $msg = replace_macros($tpl, array(
@@ -820,21 +1988,63 @@ function diaspora_send_status($item,$owner,$contact) {
                '$created' => $created
        ));
 
-       logger('diaspora_send_status: base message: ' . $msg, LOGGER_DATA);
+       logger('diaspora_send_status: ' . $owner['username'] . ' -> ' . $contact['name'] . ' base message: ' . $msg, LOGGER_DATA);
 
-       $slap = 'xml=' . urlencode(diaspora_msg_build($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,$public_batch);
+
+       if(count($images)) {
+               diaspora_send_images($item,$owner,$contact,$images,$public_batch);
+       }
 
-       post_url($contact['notify'],$slap);
-       $return_code = $a->get_curl_code();
-       logger('diaspora_send_status: returns: ' . $return_code);
        return $return_code;
 }
 
 
-function diaspora_send_followup($item,$owner,$contact) {
+function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
+       $a = get_app();
+       if(! count($images))
+               return;
+       $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
+
+       $tpl = get_markup_template('diaspora_photo.tpl');
+       foreach($images as $image) {
+               if(! stristr($image['path'],$mysite))
+                       continue;
+               $resource = str_replace('.jpg','',$image['file']);
+               $resource = substr($resource,0,strpos($resource,'-'));
+
+               $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
+                       dbesc($resource),
+                       intval($owner['uid'])
+               );
+               if(! count($r))
+                       continue;
+               $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
+               $msg = replace_macros($tpl,array(               
+                       '$path' => xmlify($image['path']),
+                       '$filename' => xmlify($image['file']),
+                       '$msg_guid' => xmlify($image['guid']),
+                       '$guid' => xmlify($r[0]['guid']),
+                       '$handle' => xmlify($image['handle']),
+                       '$public' => xmlify($public),
+                       '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
+               ));
+
+
+               logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
+               $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
+
+               diaspora_transmit($owner,$contact,$slap,$public_batch);
+       }
+
+}
+
+function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
 
        $a = get_app();
-       $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+       $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
        $theiraddr = $contact['addr'];
 
        $p = q("select guid from item where parent = %d limit 1",
@@ -856,40 +2066,41 @@ function diaspora_send_followup($item,$owner,$contact) {
                $like = false;
        }
 
-       $text = bbcode($item['body']);
+       $text = html_entity_decode(bb2diaspora($item['body']));
 
        // sign it
 
        if($like)
-               $signed_text = $item['guid'] . ';' . $target_type . ';' . $positive . ';' . $myaddr;
+               $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
        else
-               $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . $myaddr;
+               $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
 
-       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey']));
+       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
        $msg = replace_macros($tpl,array(
                '$guid' => xmlify($item['guid']),
                '$parent_guid' => xmlify($parent_guid),
                '$target_type' =>xmlify($target_type),
                '$authorsig' => xmlify($authorsig),
-               '$text' => xmlify($text),
+               '$body' => xmlify($text),
                '$positive' => xmlify($positive),
-               '$diaspora_handle' => xmlify($myaddr)
+               '$handle' => xmlify($myaddr)
        ));
 
        logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
 
-       $slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey']));
-
-       post_url($contact['notify'],$slap);
-       $return_code = $a->get_curl_code();
-       logger('diaspora_send_status: returns: ' . $return_code);
-       return $return_code;
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
 
+       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();
+       $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+       $theiraddr = $contact['addr'];
 
 
        $p = q("select guid from item where parent = %d limit 1",
@@ -900,14 +2111,6 @@ function diaspora_send_relay($item,$owner,$contact) {
        else
                return;
 
-       // fetch the original signature 
-       $r = q("select * from sign where iid = %d limit 1",
-               intval($item['id'])
-       );
-       if(! count($r)) 
-               return;
-       $orig_sign = $r[0];
-
        if($item['verb'] === ACTIVITY_LIKE) {
                $tpl = get_markup_template('diaspora_like_relay.tpl');
                $like = true;
@@ -919,16 +2122,61 @@ function diaspora_send_relay($item,$owner,$contact) {
                $like = false;
        }
 
-       $text = bbcode($item['body']);
+       $body = $item['body'];
 
-       // sign it
+       $text = html_entity_decode(bb2diaspora($body));
 
-       if($like)
-               $parent_signed_text = $orig_sign['signed_text'];
-       else
-               $parent_signed_text = $orig_sign['signed_text'];
+       // fetch the original signature if somebody sent the post to us to relay
+       // If we are relaying for a reply originating on our own account, there wasn't a 'send to relay'
+       // action. It wasn't needed. In that case create the original signature and the 
+       // owner (parent author) signature
+       // comments from other networks will be relayed under our name, with a brief 
+       // preamble to describe what's happening and noting the real author
+
+       $r = q("select * from sign where iid = %d limit 1",
+               intval($item['id'])
+       );
+       if(count($r)) { 
+               $orig_sign = $r[0];
+               $signed_text = $orig_sign['signed_text'];
+               $authorsig = $orig_sign['signature'];
+               $handle = $orig_sign['signer'];
+       }
+       else {
+
+               $itemcontact = q("select * from contact where `id` = %d limit 1",
+                       intval($item['contact-id'])
+               );
+               if(count($itemcontact)) {
+                       if(! $itemcontact[0]['self']) {
+                               $prefix = sprintf( t('[Relayed] Comment authored by %s from network %s'),
+                                       '['. $item['author-name'] . ']' . '(' . $item['author-link'] . ')',  
+                                       network_to_name($itemcontact['network'])) . "\n";
+                               $body = $prefix . $body;
+                       }
+               }
+               else {
+
+                       if($like)
+                               $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
+                       else
+                               $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
+
+                       $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
-       $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey']));
+                       q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
+                               intval($item['id']),
+                               dbesc($signed_text),
+                               dbesc(base64_encode($authorsig)),
+                               dbesc($myaddr)
+                       );
+                       $handle = $myaddr;
+               }
+       }
+
+       // sign it
+
+       $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
 
        $msg = replace_macros($tpl,array(
                '$guid' => xmlify($item['guid']),
@@ -936,35 +2184,148 @@ function diaspora_send_relay($item,$owner,$contact) {
                '$target_type' =>xmlify($target_type),
                '$authorsig' => xmlify($orig_sign['signature']),
                '$parentsig' => xmlify($parentauthorsig),
-               '$text' => xmlify($text),
+               '$body' => xmlify($text),
                '$positive' => xmlify($positive),
-               '$diaspora_handle' => xmlify($myaddr)
+               '$handle' => xmlify($handle)
        ));
 
-       // fetch the original signature 
-       $r = q("select * from sign where iid = %d limit 1",
-               intval($item['id'])
+       logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
+
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
+
+       return(diaspora_transmit($owner,$contact,$slap,$public_batch));
+
+}
+
+
+
+function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
+
+       $a = get_app();
+       $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+
+       $signed_text = $item['guid'] . ';' . 'StatusMessage';
+
+       $tpl = get_markup_template('diaspora_signed_retract.tpl');
+       $msg = replace_macros($tpl, array(
+               '$guid'   => $item['guid'],
+               '$type'   => 'StatusMessage',
+               '$handle' => $myaddr,
+               '$signature' => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'))
+       ));
+
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
+
+       return(diaspora_transmit($owner,$contact,$slap,$public_batch));
+}
+
+function diaspora_send_mail($item,$owner,$contact) {
+
+       $a = get_app();
+       $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
+
+       $r = q("select * from conv where id = %d and uid = %d limit 1",
+               intval($item['convid']),
+               intval($item['uid'])
        );
-       if(! count($r)) 
+
+       if(! count($r)) {
+               logger('diaspora_send_mail: conversation not found.');
                return;
+       }
+       $cnv = $r[0];
+
+       $conv = array(
+               'guid' => xmlify($cnv['guid']),
+               'subject' => xmlify($cnv['subject']),
+               'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
+               'diaspora_handle' => xmlify($cnv['creator']),
+               'participant_handles' => xmlify($cnv['recips'])
+       );
 
-       logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
+       $body = bb2diaspora($item['body']);
+       $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
+       $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';' 
+               . $created . ';' . $myaddr . ';' . $cnv['guid'];
+
+       $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
+
+       $msg = array(
+               'guid' => xmlify($item['guid']),
+               'parent_guid' => xmlify($cnv['guid']),
+               'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
+               'author_signature' => xmlify($sig),
+               'text' => xmlify($body),
+               'created_at' => xmlify($created),
+               'diaspora_handle' => xmlify($myaddr),
+               'conversation_guid' => xmlify($cnv['guid'])
+       );
 
-       $slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey']));
+       if($item['reply']) {
+               $tpl = get_markup_template('diaspora_message.tpl');
+               $xmsg = replace_macros($tpl, array('$msg' => $msg));
+       }
+       else {
+               $conv['messages'] = array($msg);
+               $tpl = get_markup_template('diaspora_conversation.tpl');
+               $xmsg = replace_macros($tpl, array('$conv' => $conv));
+       }
+
+       logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
+
+       $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
+
+       return(diaspora_transmit($owner,$contact,$slap,false));
 
-       post_url($contact['notify'],$slap);
-       $return_code = $a->get_curl_code();
-       logger('diaspora_send_status: returns: ' . $return_code);
-       return $return_code;
 
 }
 
+function diaspora_transmit($owner,$contact,$slap,$public_batch) {
+
+       $enabled = intval(get_config('system','diaspora_enabled'));
+       if(! $enabled) {
+               return 200;
+       }
+
+       $a = get_app();
+       $logid = random_string(4);
+       $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
+       if(! $dest_url) {
+               logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
+               return 0;
+       } 
 
+       logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
 
-function diaspora_send_retraction($item,$owner,$contact) {
+       if(! intval(get_config('system','diaspora_test')))
+               post_url($dest_url . '/', $slap);
+       else {
+               logger('diaspora_transmit: test_mode');
+               return 200;
+       }
 
+       $return_code = $a->get_curl_code();
+       logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
 
+       if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
+               logger('diaspora_transmit: queue message');
 
+               $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
+                       intval($contact['id']),
+                       dbesc(NETWORK_DIASPORA),
+                       dbesc($slap),
+                       intval($public_batch)
+               );
+               if(count($r)) {
+                       logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
+               }
+               else {
+                       // queue message for redelivery
+                       add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
+               }
+       }
 
 
-}
\ No newline at end of file
+       return(($return_code) ? $return_code : (-1));
+}