include/diaspora.php

   1 <?php
   2
   3 require_once('include/crypto.php');
   4 require_once('include/items.php');
   5 require_once('include/bb2diaspora.php');
   6 require_once('include/contact_selectors.php');
   7 require_once('include/queue_fn.php');
   8 require_once('include/lock.php');
   9 require_once('include/threads.php');
  10 require_once('mod/share.php');
  11
  12 function diaspora_dispatch_public($msg) {
  13
  14         $enabled = intval(get_config('system','diaspora_enabled'));
  15         if(! $enabled) {
  16                 logger('mod-diaspora: disabled');
  17                 return;
  18         }
  19
  20         $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
  21                 ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' )
  22                 AND `account_expired` = 0 AND `account_removed` = 0 ",
  23                 dbesc(NETWORK_DIASPORA),
  24                 dbesc($msg['author'])
  25         );
  26         if(count($r)) {
  27                 foreach($r as $rr) {
  28                         logger('diaspora_public: delivering to: ' . $rr['username']);
  29                         diaspora_dispatch($rr,$msg);
  30                 }
  31         }
  32         else
  33                 logger('diaspora_public: no subscribers');
  34 }
  35
  36
  37
  38 function diaspora_dispatch($importer,$msg,$attempt=1) {
  39
  40         $ret = 0;
  41
  42         $enabled = intval(get_config('system','diaspora_enabled'));
  43         if(! $enabled) {
  44                 logger('mod-diaspora: disabled');
  45                 return;
  46         }
  47
  48         // php doesn't like dashes in variable names
  49
  50         $msg['message'] = str_replace(
  51                         array('<activity_streams-photo>','</activity_streams-photo>'),
  52                         array('<asphoto>','</asphoto>'),
  53                         $msg['message']);
  54
  55
  56         $parsed_xml = parse_xml_string($msg['message'],false);
  57
  58         $xmlbase = $parsed_xml->post;
  59
  60         logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
  61
  62
  63         if($xmlbase->request) {
  64                 $ret = diaspora_request($importer,$xmlbase->request);
  65         }
  66         elseif($xmlbase->status_message) {
  67                 $ret = diaspora_post($importer,$xmlbase->status_message,$msg);
  68         }
  69         elseif($xmlbase->profile) {
  70                 $ret = diaspora_profile($importer,$xmlbase->profile,$msg);
  71         }
  72         elseif($xmlbase->comment) {
  73                 $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
  74         }
  75         elseif($xmlbase->like) {
  76                 $ret = diaspora_like($importer,$xmlbase->like,$msg);
  77         }
  78         elseif($xmlbase->asphoto) {
  79                 $ret = diaspora_asphoto($importer,$xmlbase->asphoto,$msg);
  80         }
  81         elseif($xmlbase->reshare) {
  82                 $ret = diaspora_reshare($importer,$xmlbase->reshare,$msg);
  83         }
  84         elseif($xmlbase->retraction) {
  85                 $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
  86         }
  87         elseif($xmlbase->signed_retraction) {
  88                 $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
  89         }
  90         elseif($xmlbase->relayable_retraction) {
  91                 $ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg);
  92         }
  93         elseif($xmlbase->photo) {
  94                 $ret = diaspora_photo($importer,$xmlbase->photo,$msg,$attempt);
  95         }
  96         elseif($xmlbase->conversation) {
  97                 $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
  98         }
  99         elseif($xmlbase->message) {
 100                 $ret = diaspora_message($importer,$xmlbase->message,$msg);
 101         }
 102         else {
 103                 logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
 104         }
 105         return $ret;
 106 }
 107
 108 function diaspora_handle_from_contact($contact_id) {
 109         $handle = False;
 110
 111         logger("diaspora_handle_from_contact: contact id is " . $contact_id, LOGGER_DEBUG);
 112
 113         $r = q("SELECT network, addr, self, url, nick FROM contact WHERE id = %d",
 114                intval($contact_id)
 115         );
 116         if($r) {
 117                 $contact = $r[0];
 118
 119                 logger("diaspora_handle_from_contact: contact 'self' = " . $contact['self'] . " 'url' = " . $contact['url'], LOGGER_DEBUG);
 120
 121                 if($contact['network'] === NETWORK_DIASPORA) {
 122                         $handle = $contact['addr'];
 123
 124 //                      logger("diaspora_handle_from_contact: contact id is a Diaspora person, handle = " . $handle, LOGGER_DEBUG);
 125                 }
 126                 elseif(($contact['network'] === NETWORK_DFRN) || ($contact['self'] == 1)) {
 127                         $baseurl_start = strpos($contact['url'],'://') + 3;
 128                         $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
 129                         $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
 130                         $handle = $contact['nick'] . '@' . $baseurl;
 131
 132 //                      logger("diaspora_handle_from_contact: contact id is a DFRN person, handle = " . $handle, LOGGER_DEBUG);
 133                 }
 134         }
 135
 136         return $handle;
 137 }
 138
 139 function diaspora_get_contact_by_handle($uid,$handle) {
 140         $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
 141                 dbesc(NETWORK_DIASPORA),
 142                 intval($uid),
 143                 dbesc($handle)
 144         );
 145         if($r && count($r))
 146                 return $r[0];
 147
 148         $handle_parts = explode("@", $handle);
 149         $nurl_sql = '%%://' . $handle_parts[1] . '%%/profile/' . $handle_parts[0];
 150         $r = q("SELECT * FROM contact WHERE network = '%s' AND uid = %d AND nurl LIKE '%s' LIMIT 1",
 151                dbesc(NETWORK_DFRN),
 152                intval($uid),
 153                dbesc($nurl_sql)
 154         );
 155         if($r && count($r))
 156                 return $r[0];
 157
 158         return false;
 159 }
 160
 161 function find_diaspora_person_by_handle($handle) {
 162
 163         $person = false;
 164         $update = false;
 165         $got_lock = false;
 166
 167         $endlessloop = 0;
 168         $maxloops = 10;
 169
 170         do {
 171                 $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
 172                         dbesc(NETWORK_DIASPORA),
 173                         dbesc($handle)
 174                 );
 175                 if(count($r)) {
 176                         $person = $r[0];
 177                         logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
 178
 179                         // update record occasionally so it doesn't get stale
 180                         $d = strtotime($person['updated'] . ' +00:00');
 181                         if($d < strtotime('now - 14 days'))
 182                                 $update = true;
 183                 }
 184
 185
 186                 // FETCHING PERSON INFORMATION FROM REMOTE SERVER
 187                 //
 188                 // If the person isn't in our 'fcontact' table, or if he/she is but
 189                 // his/her information hasn't been updated for more than 14 days, then
 190                 // we want to fetch the person's information from the remote server.
 191                 //
 192                 // Note that $person isn't changed by this block of code unless the
 193                 // person's information has been successfully fetched from the remote
 194                 // server. So if $person was 'false' to begin with (because he/she wasn't
 195                 // in the local cache), it'll stay false, and if $person held the local
 196                 // cache information to begin with, it'll keep that information. That way
 197                 // if there's a problem with the remote fetch, we can at least use our
 198                 // cached information--it's better than nothing.
 199
 200                 if((! $person) || ($update))  {
 201                         // Lock the function to prevent race conditions if multiple items
 202                         // come in at the same time from a person who doesn't exist in
 203                         // fcontact
 204                         //
 205                         // Don't loop forever. On the last loop, try to create the contact
 206                         // whether the function is locked or not. Maybe the locking thread
 207                         // has died or something. At any rate, a duplicate in 'fcontact'
 208                         // is a much smaller problem than a deadlocked thread
 209                         $got_lock = lock_function('find_diaspora_person_by_handle', false);
 210                         if(($endlessloop + 1) >= $maxloops)
 211                                 $got_lock = true;
 212
 213                         if($got_lock) {
 214                                 logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG);
 215                                 require_once('include/Scrape.php');
 216                                 $r = probe_url($handle, PROBE_DIASPORA);
 217
 218                                 // Note that Friendica contacts can return a "Diaspora person"
 219                                 // if Diaspora connectivity is enabled on their server
 220                                 if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
 221                                         add_fcontact($r,$update);
 222                                         $person = ($r);
 223                                 }
 224
 225                                 unlock_function('find_diaspora_person_by_handle');
 226                         }
 227                         else {
 228                                 logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG);
 229                                 if(! $person)
 230                                         block_on_function_lock('find_diaspora_person_by_handle');
 231                         }
 232                 }
 233         } while((! $person) && (! $got_lock) && (++$endlessloop < $maxloops));
 234         // We need to try again if the person wasn't in 'fcontact' but the function was locked.
 235         // The fact that the function was locked may mean that another process was creating the
 236         // person's record. It could also mean another process was creating or updating an unrelated
 237         // person.
 238         //
 239         // At any rate, we need to keep trying until we've either got the person or had a chance to
 240         // try to fetch his/her remote information. But we don't want to block on locking the
 241         // function, because if the other process is creating the record, then when we acquire the lock
 242         // we'll dive right into creating another, duplicate record. We DO want to at least wait
 243         // until the lock is released, so we don't flood the database with requests.
 244         //
 245         // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since
 246         // we do have some information for the person
 247
 248         return $person;
 249 }
 250
 251
 252 function get_diaspora_key($uri) {
 253         logger('Fetching diaspora key for: ' . $uri);
 254
 255         $r = find_diaspora_person_by_handle($uri);
 256         if($r)
 257                 return $r['pubkey'];
 258         return '';
 259 }
 260
 261
 262 function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
 263         $a = get_app();
 264
 265         logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
 266
 267
 268         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 269
 270 //      $b64_data = base64_encode($msg);
 271 //      $b64url_data = base64url_encode($b64_data);
 272
 273         $b64url_data = base64url_encode($msg);
 274
 275         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 276
 277         $type = 'application/xml';
 278         $encoding = 'base64url';
 279         $alg = 'RSA-SHA256';
 280
 281         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 282                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 283
 284         $signature = rsa_sign($signable_data,$prvkey);
 285         $sig = base64url_encode($signature);
 286
 287 $magic_env = <<< EOT
 288 <?xml version='1.0' encoding='UTF-8'?>
 289 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 290   <header>
 291     <author_id>$handle</author_id>
 292   </header>
 293   <me:env>
 294     <me:encoding>base64url</me:encoding>
 295     <me:alg>RSA-SHA256</me:alg>
 296     <me:data type="application/xml">$data</me:data>
 297     <me:sig>$sig</me:sig>
 298   </me:env>
 299 </diaspora>
 300 EOT;
 301
 302         logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 303         return $magic_env;
 304
 305 }
 306
 307
 308
 309
 310 function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
 311         $a = get_app();
 312
 313         if($public)
 314                 return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
 315
 316         logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
 317
 318         // without a public key nothing will work
 319
 320         if(! $pubkey) {
 321                 logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
 322                 return '';
 323         }
 324
 325         $inner_aes_key = random_string(32);
 326         $b_inner_aes_key = base64_encode($inner_aes_key);
 327         $inner_iv = random_string(16);
 328         $b_inner_iv = base64_encode($inner_iv);
 329
 330         $outer_aes_key = random_string(32);
 331         $b_outer_aes_key = base64_encode($outer_aes_key);
 332         $outer_iv = random_string(16);
 333         $b_outer_iv = base64_encode($outer_iv);
 334
 335         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 336
 337         $padded_data = pkcs5_pad($msg,16);
 338         $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
 339
 340         $b64_data = base64_encode($inner_encrypted);
 341
 342
 343         $b64url_data = base64url_encode($b64_data);
 344         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 345
 346         $type = 'application/xml';
 347         $encoding = 'base64url';
 348         $alg = 'RSA-SHA256';
 349
 350         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 351                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 352
 353         $signature = rsa_sign($signable_data,$prvkey);
 354         $sig = base64url_encode($signature);
 355
 356 $decrypted_header = <<< EOT
 357 <decrypted_header>
 358   <iv>$b_inner_iv</iv>
 359   <aes_key>$b_inner_aes_key</aes_key>
 360   <author_id>$handle</author_id>
 361 </decrypted_header>
 362 EOT;
 363
 364         $decrypted_header = pkcs5_pad($decrypted_header,16);
 365
 366         $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
 367
 368         $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
 369
 370         $encrypted_outer_key_bundle = '';
 371         openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
 372
 373         $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
 374
 375         logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
 376
 377         $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
 378                 'ciphertext' => base64_encode($ciphertext)));
 379         $cipher_json = base64_encode($encrypted_header_json_object);
 380
 381         $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
 382
 383 $magic_env = <<< EOT
 384 <?xml version='1.0' encoding='UTF-8'?>
 385 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 386   $encrypted_header
 387   <me:env>
 388     <me:encoding>base64url</me:encoding>
 389     <me:alg>RSA-SHA256</me:alg>
 390     <me:data type="application/xml">$data</me:data>
 391     <me:sig>$sig</me:sig>
 392   </me:env>
 393 </diaspora>
 394 EOT;
 395
 396         logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 397         return $magic_env;
 398
 399 }
 400
 401 /**
 402  *
 403  * diaspora_decode($importer,$xml)
 404  *   array $importer -> from user table
 405  *   string $xml -> urldecoded Diaspora salmon
 406  *
 407  * Returns array
 408  * 'message' -> decoded Diaspora XML message
 409  * 'author' -> author diaspora handle
 410  * 'key' -> author public key (converted to pkcs#8)
 411  *
 412  * Author and key are used elsewhere to save a lookup for verifying replies and likes
 413  */
 414
 415
 416 function diaspora_decode($importer,$xml) {
 417
 418         $public = false;
 419         $basedom = parse_xml_string($xml);
 420
 421         $children = $basedom->children('https://joindiaspora.com/protocol');
 422
 423         if($children->header) {
 424                 $public = true;
 425                 $author_link = str_replace('acct:','',$children->header->author_id);
 426         }
 427         else {
 428
 429                 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
 430
 431                 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
 432                 $ciphertext = base64_decode($encrypted_header->ciphertext);
 433
 434                 $outer_key_bundle = '';
 435                 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
 436
 437                 $j_outer_key_bundle = json_decode($outer_key_bundle);
 438
 439                 $outer_iv = base64_decode($j_outer_key_bundle->iv);
 440                 $outer_key = base64_decode($j_outer_key_bundle->key);
 441
 442                 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
 443
 444
 445                 $decrypted = pkcs5_unpad($decrypted);
 446
 447                 /**
 448                  * $decrypted now contains something like
 449                  *
 450                  *  <decrypted_header>
 451                  *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
 452                  *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 453
 454 ***** OBSOLETE
 455
 456                  *     <author>
 457                  *       <name>Ryan Hughes</name>
 458                  *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
 459                  *     </author>
 460
 461 ***** CURRENT
 462
 463                  *     <author_id>galaxor@diaspora.priateship.org</author_id>
 464
 465 ***** END DIFFS
 466
 467                  *  </decrypted_header>
 468                  */
 469
 470                 logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
 471                 $idom = parse_xml_string($decrypted,false);
 472
 473                 $inner_iv = base64_decode($idom->iv);
 474                 $inner_aes_key = base64_decode($idom->aes_key);
 475
 476                 $author_link = str_replace('acct:','',$idom->author_id);
 477
 478         }
 479
 480         $dom = $basedom->children(NAMESPACE_SALMON_ME);
 481
 482         // figure out where in the DOM tree our data is hiding
 483
 484         if($dom->provenance->data)
 485                 $base = $dom->provenance;
 486         elseif($dom->env->data)
 487                 $base = $dom->env;
 488         elseif($dom->data)
 489                 $base = $dom;
 490
 491         if(! $base) {
 492                 logger('mod-diaspora: unable to locate salmon data in xml ');
 493                 http_status_exit(400);
 494         }
 495
 496
 497         // Stash the signature away for now. We have to find their key or it won't be good for anything.
 498         $signature = base64url_decode($base->sig);
 499
 500         // unpack the  data
 501
 502         // strip whitespace so our data element will return to one big base64 blob
 503         $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
 504
 505
 506         // stash away some other stuff for later
 507
 508         $type = $base->data[0]->attributes()->type[0];
 509         $keyhash = $base->sig[0]->attributes()->keyhash[0];
 510         $encoding = $base->encoding;
 511         $alg = $base->alg;
 512
 513
 514         $signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 515
 516
 517         // decode the data
 518         $data = base64url_decode($data);
 519
 520
 521         if($public) {
 522                 $inner_decrypted = $data;
 523         }
 524         else {
 525
 526                 // Decode the encrypted blob
 527
 528                 $inner_encrypted = base64_decode($data);
 529                 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
 530                 $inner_decrypted = pkcs5_unpad($inner_decrypted);
 531         }
 532
 533         if(! $author_link) {
 534                 logger('mod-diaspora: Could not retrieve author URI.');
 535                 http_status_exit(400);
 536         }
 537
 538         // Once we have the author URI, go to the web and try to find their public key
 539         // (first this will look it up locally if it is in the fcontact cache)
 540         // This will also convert diaspora public key from pkcs#1 to pkcs#8
 541
 542         logger('mod-diaspora: Fetching key for ' . $author_link );
 543         $key = get_diaspora_key($author_link);
 544
 545         if(! $key) {
 546                 logger('mod-diaspora: Could not retrieve author key.');
 547                 http_status_exit(400);
 548         }
 549
 550         $verify = rsa_verify($signed_data,$signature,$key);
 551
 552         if(! $verify) {
 553                 logger('mod-diaspora: Message did not verify. Discarding.');
 554                 http_status_exit(400);
 555         }
 556
 557         logger('mod-diaspora: Message verified.');
 558
 559         return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
 560
 561 }
 562
 563
 564 function diaspora_request($importer,$xml) {
 565
 566         $a = get_app();
 567
 568         $sender_handle = unxmlify($xml->sender_handle);
 569         $recipient_handle = unxmlify($xml->recipient_handle);
 570
 571         if(! $sender_handle || ! $recipient_handle)
 572                 return;
 573
 574         $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 575
 576         if($contact) {
 577
 578                 // perhaps we were already sharing with this person. Now they're sharing with us.
 579                 // That makes us friends.
 580
 581                 if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 582                         q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 583                                 intval(CONTACT_IS_FRIEND),
 584                                 intval($contact['id']),
 585                                 intval($importer['uid'])
 586                         );
 587                 }
 588                 // send notification
 589
 590                 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
 591                         intval($importer['uid'])
 592                 );
 593
 594                 if((count($r)) && (!$r[0]['hide-friends']) && (!$contact['hidden']) && intval(get_pconfig($importer['uid'],'system','post_newfriend'))) {
 595                         require_once('include/items.php');
 596
 597                         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 598                                 intval($importer['uid'])
 599                         );
 600
 601                         // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
 602
 603                         if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
 604
 605                                 $arr = array();
 606                                 $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']);
 607                                 $arr['uid'] = $importer['uid'];
 608                                 $arr['contact-id'] = $self[0]['id'];
 609                                 $arr['wall'] = 1;
 610                                 $arr['type'] = 'wall';
 611                                 $arr['gravity'] = 0;
 612                                 $arr['origin'] = 1;
 613                                 $arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
 614                                 $arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
 615                                 $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
 616                                 $arr['verb'] = ACTIVITY_FRIEND;
 617                                 $arr['object-type'] = ACTIVITY_OBJ_PERSON;
 618
 619                                 $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]';
 620                                 $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
 621                                 $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';
 622                                 $arr['body'] =  sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
 623
 624                                 $arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
 625                                         . '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
 626                                 $arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
 627                                 $arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
 628                                 $arr['object'] .= '</link></object>' . "\n";
 629                                 $arr['last-child'] = 1;
 630
 631                                 $arr['allow_cid'] = $user[0]['allow_cid'];
 632                                 $arr['allow_gid'] = $user[0]['allow_gid'];
 633                                 $arr['deny_cid']  = $user[0]['deny_cid'];
 634                                 $arr['deny_gid']  = $user[0]['deny_gid'];
 635
 636                                 $i = item_store($arr);
 637                                 if($i)
 638                                 proc_run('php',"include/notifier.php","activity","$i");
 639
 640                         }
 641
 642                 }
 643
 644                 return;
 645         }
 646
 647         $ret = find_diaspora_person_by_handle($sender_handle);
 648
 649
 650         if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
 651                 logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
 652                 return;
 653         }
 654
 655         $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public');
 656
 657
 658
 659         $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
 660                 VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
 661                 intval($importer['uid']),
 662                 dbesc($ret['network']),
 663                 dbesc($ret['addr']),
 664                 datetime_convert(),
 665                 dbesc($ret['url']),
 666                 dbesc(normalise_link($ret['url'])),
 667                 dbesc($batch),
 668                 dbesc($ret['name']),
 669                 dbesc($ret['nick']),
 670                 dbesc($ret['photo']),
 671                 dbesc($ret['pubkey']),
 672                 dbesc($ret['notify']),
 673                 dbesc($ret['poll']),
 674                 1,
 675                 2
 676         );
 677
 678         // find the contact record we just created
 679
 680         $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 681
 682         if(! $contact_record) {
 683                 logger('diaspora_request: unable to locate newly created contact record.');
 684                 return;
 685         }
 686
 687         $g = q("select def_gid from user where uid = %d limit 1",
 688                 intval($importer['uid'])
 689         );
 690         if($g && intval($g[0]['def_gid'])) {
 691                 require_once('include/group.php');
 692                 group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']);
 693         }
 694
 695         if($importer['page-flags'] == PAGE_NORMAL) {
 696
 697                 $hash = random_string() . (string) time();   // Generate a confirm_key
 698
 699                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
 700                         VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
 701                         intval($importer['uid']),
 702                         intval($contact_record['id']),
 703                         0,
 704                         0,
 705                         dbesc( t('Sharing notification from Diaspora network')),
 706                         dbesc($hash),
 707                         dbesc(datetime_convert())
 708                 );
 709         }
 710         else {
 711
 712                 // automatic friend approval
 713
 714                 require_once('include/Photo.php');
 715
 716                 $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']);
 717
 718                 // technically they are sharing with us (CONTACT_IS_SHARING),
 719                 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
 720                 // we are going to change the relationship and make them a follower.
 721
 722                 if($importer['page-flags'] == PAGE_FREELOVE)
 723                         $new_relation = CONTACT_IS_FRIEND;
 724                 else
 725                         $new_relation = CONTACT_IS_FOLLOWER;
 726
 727                 $r = q("UPDATE `contact` SET
 728                         `photo` = '%s',
 729                         `thumb` = '%s',
 730                         `micro` = '%s',
 731                         `rel` = %d,
 732                         `name-date` = '%s',
 733                         `uri-date` = '%s',
 734                         `avatar-date` = '%s',
 735                         `blocked` = 0,
 736                         `pending` = 0
 737                         WHERE `id` = %d
 738                         ",
 739                         dbesc($photos[0]),
 740                         dbesc($photos[1]),
 741                         dbesc($photos[2]),
 742                         intval($new_relation),
 743                         dbesc(datetime_convert()),
 744                         dbesc(datetime_convert()),
 745                         dbesc(datetime_convert()),
 746                         intval($contact_record['id'])
 747                 );
 748
 749                 $u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
 750                 if($u)
 751                         $ret = diaspora_share($u[0],$contact_record);
 752         }
 753
 754         return;
 755 }
 756
 757 function diaspora_post_allow($importer,$contact) {
 758
 759         // perhaps we were already sharing with this person. Now they're sharing with us.
 760         // That makes us friends.
 761         // Normally this should have handled by getting a request - but this could get lost
 762         if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 763                 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 764                         intval(CONTACT_IS_FRIEND),
 765                         intval($contact['id']),
 766                         intval($importer['uid'])
 767                 );
 768                 $contact['rel'] = CONTACT_IS_FRIEND;
 769                 logger('diaspora_post_allow: defining user '.$contact["nick"].' as friend');
 770         }
 771
 772         if(($contact['blocked']) || ($contact['readonly']) || ($contact['archive']))
 773                 return false;
 774         if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
 775                 return true;
 776         if($contact['rel'] == CONTACT_IS_FOLLOWER)
 777                 if($importer['page-flags'] == PAGE_COMMUNITY)
 778                         return true;
 779         return false;
 780 }
 781
 782
 783 function diaspora_post($importer,$xml,$msg) {
 784
 785         $a = get_app();
 786         $guid = notags(unxmlify($xml->guid));
 787         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 788
 789         if($diaspora_handle != $msg['author']) {
 790                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
 791                 return 202;
 792         }
 793
 794         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
 795         if(! $contact)
 796                 return;
 797
 798         if(! diaspora_post_allow($importer,$contact)) {
 799                 logger('diaspora_post: Ignoring this author.');
 800                 return 202;
 801         }
 802
 803         $message_id = $diaspora_handle . ':' . $guid;
 804         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 805                 intval($importer['uid']),
 806                 dbesc($message_id),
 807                 dbesc($guid)
 808         );
 809         if(count($r)) {
 810                 logger('diaspora_post: message exists: ' . $guid);
 811                 return;
 812         }
 813
 814         // allocate a guid on our system - we aren't fixing any collisions.
 815         // we're ignoring them
 816
 817         $g = q("select * from guid where guid = '%s' limit 1",
 818                 dbesc($guid)
 819         );
 820         if(! count($g)) {
 821                 q("insert into guid ( guid ) values ( '%s' )",
 822                         dbesc($guid)
 823                 );
 824         }
 825
 826         $created = unxmlify($xml->created_at);
 827         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
 828
 829         $body = diaspora2bb($xml->raw_message);
 830
 831         // Add OEmbed and other information to the body
 832         $body = add_page_info_to_body($body, false, true);
 833
 834         $datarray = array();
 835
 836         $str_tags = '';
 837
 838         $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
 839         if($cnt) {
 840                 foreach($matches as $mtch) {
 841                         if(strlen($str_tags))
 842                                 $str_tags .= ',';
 843                         $str_tags .= '@[url=' . $mtch[1] . '[/url]';
 844                 }
 845         }
 846
 847         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
 848
 849         $datarray['uid'] = $importer['uid'];
 850         $datarray['contact-id'] = $contact['id'];
 851         $datarray['wall'] = 0;
 852         $datarray['network'] = NETWORK_DIASPORA;
 853         $datarray['verb'] = ACTIVITY_POST;
 854         $datarray['guid'] = $guid;
 855         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 856         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 857         $datarray['private'] = $private;
 858         $datarray['parent'] = 0;
 859         $datarray['plink'] = $plink;
 860         $datarray['owner-name'] = $contact['name'];
 861         $datarray['owner-link'] = $contact['url'];
 862         //$datarray['owner-avatar'] = $contact['thumb'];
 863         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
 864         $datarray['author-name'] = $contact['name'];
 865         $datarray['author-link'] = $contact['url'];
 866         $datarray['author-avatar'] = $contact['thumb'];
 867         $datarray['body'] = $body;
 868         $datarray['tag'] = $str_tags;
 869         $datarray['app']  = 'Diaspora';
 870
 871         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
 872
 873         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 874
 875         DiasporaFetchGuid($datarray);
 876         $message_id = item_store($datarray);
 877
 878         return;
 879
 880 }
 881
 882 function DiasporaFetchGuid($item) {
 883         preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
 884                 function ($match) use ($item){
 885                         return(DiasporaFetchGuidSub($match, $item));
 886                 },$item["body"]);
 887 }
 888
 889 function DiasporaFetchGuidSub($match, $item) {
 890         $a = get_app();
 891
 892         $author = parse_url($item["author-link"]);
 893         $authorserver = $author["scheme"]."://".$author["host"];
 894
 895         $owner = parse_url($item["owner-link"]);
 896         $ownerserver = $owner["scheme"]."://".$owner["host"];
 897
 898         if (!diaspora_store_by_guid($match[1], $authorserver))
 899                 diaspora_store_by_guid($match[1], $ownerserver);
 900 }
 901
 902 function diaspora_store_by_guid($guid, $server) {
 903         require_once("include/Contact.php");
 904
 905         logger("fetching item ".$guid." from ".$server, LOGGER_DEBUG);
 906
 907         $item = diaspora_fetch_message($guid, $server);
 908
 909         if (!$item)
 910                 return false;
 911
 912         $body = $item["body"];
 913         $str_tags = $item["tag"];
 914         $app = $item["app"];
 915         $created = $item["created"];
 916         $author = $item["author"];
 917         $guid = $item["guid"];
 918         $private = $item["private"];
 919
 920         $message_id = $author.':'.$guid;
 921         $r = q("SELECT `id` FROM `item` WHERE `uid` = 0 AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 922                 dbesc($message_id),
 923                 dbesc($guid)
 924         );
 925         if(count($r))
 926                 return $r[0]["id"];
 927
 928         $person = find_diaspora_person_by_handle($author);
 929
 930         $datarray = array();
 931         $datarray['uid'] = 0;
 932         $datarray['contact-id'] = get_contact($person['url'], 0);
 933         $datarray['wall'] = 0;
 934         $datarray['network']  = NETWORK_DIASPORA;
 935         $datarray['guid'] = $guid;
 936         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 937         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 938         $datarray['private'] = $private;
 939         $datarray['parent'] = 0;
 940         $datarray['plink'] = 'https://'.substr($author,strpos($author,'@')+1).'/posts/'.$guid;
 941         $datarray['author-name'] = $person['name'];
 942         $datarray['author-link'] = $person['url'];
 943         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
 944         $datarray['owner-name'] = $datarray['author-name'];
 945         $datarray['owner-link'] = $datarray['author-link'];
 946         $datarray['owner-avatar'] = $datarray['author-avatar'];
 947         $datarray['body'] = $body;
 948         $datarray['tag'] = $str_tags;
 949         $datarray['app']  = $app;
 950         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 951
 952         DiasporaFetchGuid($datarray);
 953         $message_id = item_store($datarray);
 954
 955         // To-Do:
 956         // Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
 957
 958         return $message_id;
 959 }
 960
 961 function diaspora_fetch_message($guid, $server, $level = 0) {
 962
 963         if ($level > 5)
 964                 return false;
 965
 966         $a = get_app();
 967
 968         // This will not work if the server is not a Diaspora server
 969         $source_url = $server.'/p/'.$guid.'.xml';
 970         $x = fetch_url($source_url);
 971         if(!$x)
 972                 return false;
 973
 974         $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
 975         $source_xml = parse_xml_string($x,false);
 976
 977         $item = array();
 978         $item["app"] = 'Diaspora';
 979         $item["guid"] = $guid;
 980         $body = "";
 981
 982         if ($source_xml->post->status_message->created_at)
 983                 $item["created"] = unxmlify($source_xml->post->status_message->created_at);
 984
 985         if ($source_xml->post->status_message->provider_display_name)
 986                 $item["app"] = unxmlify($source_xml->post->status_message->provider_display_name);
 987
 988         if ($source_xml->post->status_message->diaspora_handle)
 989                 $item["author"] = unxmlify($source_xml->post->status_message->diaspora_handle);
 990
 991         if ($source_xml->post->status_message->guid)
 992                 $item["guid"] = unxmlify($source_xml->post->status_message->guid);
 993
 994         $item["private"] = (unxmlify($source_xml->post->status_message->public) == 'false');
 995
 996         if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
 997                 $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
 998                 $body = scale_external_images($body,false);
 999         } elseif($source_xml->post->asphoto->image_url) {
1000                 $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
1001                 $body = scale_external_images($body);
1002         } elseif($source_xml->post->status_message) {
1003                 $body = diaspora2bb($source_xml->post->status_message->raw_message);
1004
1005                 // Checking for embedded pictures
1006                 if($source_xml->post->status_message->photo->remote_photo_path AND
1007                         $source_xml->post->status_message->photo->remote_photo_name) {
1008
1009                         $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path));
1010                         $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name));
1011
1012                         $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body;
1013
1014                         logger('embedded picture link found: '.$body, LOGGER_DEBUG);
1015                 }
1016
1017                 $body = scale_external_images($body);
1018
1019                 // Add OEmbed and other information to the body
1020                 $body = add_page_info_to_body($body, false, true);
1021         } elseif($source_xml->post->reshare) {
1022                 // Reshare of a reshare
1023                 return diaspora_fetch_message($source_xml->post->reshare->root_guid, $server, ++$level);
1024         } else {
1025                 // Maybe it is a reshare of a photo that will be delivered at a later time (testing)
1026                 logger('no content found: '.print_r($source_xml,true));
1027                 $body = "";
1028         }
1029
1030         if ($body == "")
1031                 return false;
1032
1033         $item["tag"] = '';
1034         $item["body"] = $body;
1035
1036         return $item;
1037 }
1038
1039 function diaspora_reshare($importer,$xml,$msg) {
1040
1041         logger('diaspora_reshare: init: ' . print_r($xml,true));
1042
1043         $a = get_app();
1044         $guid = notags(unxmlify($xml->guid));
1045         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1046
1047
1048         if($diaspora_handle != $msg['author']) {
1049                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1050                 return 202;
1051         }
1052
1053         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1054         if(! $contact)
1055                 return;
1056
1057         if(! diaspora_post_allow($importer,$contact)) {
1058                 logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
1059                 return 202;
1060         }
1061
1062         $message_id = $diaspora_handle . ':' . $guid;
1063         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1064                 intval($importer['uid']),
1065                 dbesc($message_id),
1066                 dbesc($guid)
1067         );
1068         if(count($r)) {
1069                 logger('diaspora_reshare: message exists: ' . $guid);
1070                 return;
1071         }
1072
1073         $orig_author = notags(unxmlify($xml->root_diaspora_id));
1074         $orig_guid = notags(unxmlify($xml->root_guid));
1075
1076         $create_original_post = false;
1077
1078         // Do we already have this item?
1079         $r = q("SELECT `body`, `tag`, `app`, `author-link`, `plink` FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1080                 dbesc($orig_guid),
1081                 dbesc(NETWORK_DIASPORA)
1082         );
1083         if(count($r)) {
1084                 logger('reshared message '.orig_guid." reshared by ".$guid.' already exists on system: '.$orig_url);
1085
1086                 // Maybe it is already a reshared item?
1087                 // Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
1088                 require_once('include/api.php');
1089                 if (api_share_as_retweet($r[0]))
1090                         $r = array();
1091                 else
1092                         $orig_url = $a->get_baseurl().'/display/'.$orig_guid;
1093         }
1094
1095         if (!count($r)) {
1096                 $body = "";
1097                 $str_tags = "";
1098                 $app = "";
1099
1100                 $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1101
1102                 $server = 'https://'.substr($orig_author,strpos($orig_author,'@')+1);
1103                 logger('1st try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1104                 $item = diaspora_fetch_message($orig_guid, $server);
1105
1106                 if (!$item) {
1107                         $server = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1108                         logger('2nd try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1109                         $item = diaspora_fetch_message($orig_guid, $server);
1110                 }
1111                 if (!$item) {
1112                         $server = 'http://'.substr($orig_author,strpos($orig_author,'@')+1);
1113                         logger('3rd try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1114                         $item = diaspora_fetch_message($orig_guid, $server);
1115                 }
1116                 if (!$item) {
1117                         $server = 'http://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1118                         logger('4th try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1119                         $item = diaspora_fetch_message($orig_guid, $server);
1120                 }
1121
1122                 if ($item) {
1123                         $body = $item["body"];
1124                         $str_tags = $item["tag"];
1125                         $app = $item["app"];
1126                         $orig_created = $item["created"];
1127                         $orig_author = $item["author"];
1128                         $orig_guid = $item["guid"];
1129                         $create_original_post = ($body != "");
1130                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1131                 }
1132         }
1133
1134         $person = find_diaspora_person_by_handle($orig_author);
1135
1136         // allocate a guid on our system - we aren't fixing any collisions.
1137         // we're ignoring them
1138
1139         $g = q("select * from guid where guid = '%s' limit 1",
1140                 dbesc($guid)
1141         );
1142         if(! count($g)) {
1143                 q("insert into guid ( guid ) values ( '%s' )",
1144                         dbesc($guid)
1145                 );
1146         }
1147
1148         $created = unxmlify($xml->created_at);
1149         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1150
1151         $datarray = array();
1152
1153         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1154
1155         $datarray['uid'] = $importer['uid'];
1156         $datarray['contact-id'] = $contact['id'];
1157         $datarray['wall'] = 0;
1158         $datarray['network']  = NETWORK_DIASPORA;
1159         $datarray['guid'] = $guid;
1160         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1161         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1162         $datarray['private'] = $private;
1163         $datarray['parent'] = 0;
1164         $datarray['plink'] = $plink;
1165         $datarray['owner-name'] = $contact['name'];
1166         $datarray['owner-link'] = $contact['url'];
1167         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1168         if (!intval(get_config('system','wall-to-wall_share'))) {
1169                 $prefix = share_header($person['name'], $person['url'], ((x($person,'thumb')) ? $person['thumb'] : $person['photo']), $orig_guid, $orig_created, $orig_url);
1170
1171                 $datarray['author-name'] = $contact['name'];
1172                 $datarray['author-link'] = $contact['url'];
1173                 $datarray['author-avatar'] = $contact['thumb'];
1174                 $datarray['body'] = $prefix.$body."[/share]";
1175         } else {
1176                 // Let reshared messages look like wall-to-wall posts
1177                 $datarray['author-name'] = $person['name'];
1178                 $datarray['author-link'] = $person['url'];
1179                 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1180                 $datarray['body'] = $body;
1181         }
1182
1183         $datarray['tag'] = $str_tags;
1184         $datarray['app']  = $app;
1185
1186         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing)
1187         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
1188
1189         // Store the original item of a reshare
1190         if ($create_original_post) {
1191                 require_once("include/Contact.php");
1192
1193                 $datarray2 = $datarray;
1194
1195                 $datarray2['uid'] = 0;
1196                 $datarray2['contact-id'] = get_contact($person['url'], 0);
1197                 $datarray2['guid'] = $orig_guid;
1198                 $datarray2['uri'] = $datarray2['parent-uri'] = $orig_author.':'.$orig_guid;
1199                 $datarray2['changed'] = $datarray2['created'] = $datarray2['edited'] = $datarray2['commented'] = $datarray2['received'] = datetime_convert('UTC','UTC',$orig_created);
1200                 $datarray2['plink'] = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1201
1202                 $datarray2['author-name'] = $person['name'];
1203                 $datarray2['author-link'] = $person['url'];
1204                 $datarray2['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1205                 $datarray2['owner-name'] = $datarray2['author-name'];
1206                 $datarray2['owner-link'] = $datarray2['author-link'];
1207                 $datarray2['owner-avatar'] = $datarray2['author-avatar'];
1208                 $datarray2['body'] = $body;
1209
1210                 DiasporaFetchGuid($datarray2);
1211                 $message_id = item_store($datarray2);
1212
1213                 logger("Store original item ".$orig_guid." under message id ".$message_id);
1214         }
1215
1216         DiasporaFetchGuid($datarray);
1217         $message_id = item_store($datarray);
1218
1219         return;
1220
1221 }
1222
1223
1224 function diaspora_asphoto($importer,$xml,$msg) {
1225         logger('diaspora_asphoto called');
1226
1227         $a = get_app();
1228         $guid = notags(unxmlify($xml->guid));
1229         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1230
1231         if($diaspora_handle != $msg['author']) {
1232                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1233                 return 202;
1234         }
1235
1236         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1237         if(! $contact)
1238                 return;
1239
1240         if(! diaspora_post_allow($importer,$contact)) {
1241                 logger('diaspora_asphoto: Ignoring this author.');
1242                 return 202;
1243         }
1244
1245         $message_id = $diaspora_handle . ':' . $guid;
1246         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1247                 intval($importer['uid']),
1248                 dbesc($message_id),
1249                 dbesc($guid)
1250         );
1251         if(count($r)) {
1252                 logger('diaspora_asphoto: message exists: ' . $guid);
1253                 return;
1254         }
1255
1256         // allocate a guid on our system - we aren't fixing any collisions.
1257         // we're ignoring them
1258
1259         $g = q("select * from guid where guid = '%s' limit 1",
1260                 dbesc($guid)
1261         );
1262         if(! count($g)) {
1263                 q("insert into guid ( guid ) values ( '%s' )",
1264                         dbesc($guid)
1265                 );
1266         }
1267
1268         $created = unxmlify($xml->created_at);
1269         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1270
1271         if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
1272                 $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
1273                 $body = scale_external_images($body,false);
1274         }
1275         elseif($xml->image_url) {
1276                 $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
1277                 $body = scale_external_images($body);
1278         }
1279         else {
1280                 logger('diaspora_asphoto: no photo url found.');
1281                 return;
1282         }
1283
1284         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1285
1286         $datarray = array();
1287
1288         $datarray['uid'] = $importer['uid'];
1289         $datarray['contact-id'] = $contact['id'];
1290         $datarray['wall'] = 0;
1291         $datarray['network']  = NETWORK_DIASPORA;
1292         $datarray['guid'] = $guid;
1293         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1294         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1295         $datarray['private'] = $private;
1296         $datarray['parent'] = 0;
1297         $datarray['plink'] = $plink;
1298         $datarray['owner-name'] = $contact['name'];
1299         $datarray['owner-link'] = $contact['url'];
1300         //$datarray['owner-avatar'] = $contact['thumb'];
1301         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1302         $datarray['author-name'] = $contact['name'];
1303         $datarray['author-link'] = $contact['url'];
1304         $datarray['author-avatar'] = $contact['thumb'];
1305         $datarray['body'] = $body;
1306
1307         $datarray['app']  = 'Diaspora/Cubbi.es';
1308
1309         DiasporaFetchGuid($datarray);
1310         $message_id = item_store($datarray);
1311
1312         //if($message_id) {
1313         //      q("update item set plink = '%s' where id = %d",
1314         //              dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1315         //              intval($message_id)
1316         //      );
1317         //}
1318
1319         return;
1320
1321 }
1322
1323
1324
1325
1326
1327
1328 function diaspora_comment($importer,$xml,$msg) {
1329
1330         $a = get_app();
1331         $guid = notags(unxmlify($xml->guid));
1332         $parent_guid = notags(unxmlify($xml->parent_guid));
1333         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1334         $target_type = notags(unxmlify($xml->target_type));
1335         $text = unxmlify($xml->text);
1336         $author_signature = notags(unxmlify($xml->author_signature));
1337
1338         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1339
1340         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1341         if(! $contact) {
1342                 logger('diaspora_comment: cannot find contact: ' . $msg['author']);
1343                 return;
1344         }
1345
1346         if(! diaspora_post_allow($importer,$contact)) {
1347                 logger('diaspora_comment: Ignoring this author.');
1348                 return 202;
1349         }
1350
1351         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1352                 intval($importer['uid']),
1353                 dbesc($guid)
1354         );
1355         if(count($r)) {
1356                 logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
1357                 return;
1358         }
1359
1360         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1361                 intval($importer['uid']),
1362                 dbesc($parent_guid)
1363         );
1364         if(! count($r)) {
1365                 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
1366                 return;
1367         }
1368         $parent_item = $r[0];
1369
1370
1371         /* How Diaspora performs comment signature checking:
1372
1373            - If an item has been sent by the comment author to the top-level post owner to relay on
1374              to the rest of the contacts on the top-level post, the top-level post owner should check
1375              the author_signature, then create a parent_author_signature before relaying the comment on
1376            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1377              check only the parent_author_signature. Basically, they trust that the top-level post
1378              owner has already verified the authenticity of anything he/she sends out
1379            - In either case, the signature that get checked is the signature created by the person
1380              who sent the salmon
1381         */
1382
1383         $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
1384         $key = $msg['key'];
1385
1386         if($parent_author_signature) {
1387                 // If a parent_author_signature exists, then we've received the comment
1388                 // relayed from the top-level post owner. There's no need to check the
1389                 // author_signature if the parent_author_signature is valid
1390
1391                 $parent_author_signature = base64_decode($parent_author_signature);
1392
1393                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1394                         logger('diaspora_comment: top-level owner verification failed.');
1395                         return;
1396                 }
1397         }
1398         else {
1399                 // If there's no parent_author_signature, then we've received the comment
1400                 // from the comment creator. In that case, the person is commenting on
1401                 // our post, so he/she must be a contact of ours and his/her public key
1402                 // should be in $msg['key']
1403
1404                 $author_signature = base64_decode($author_signature);
1405
1406                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1407                         logger('diaspora_comment: comment author verification failed.');
1408                         return;
1409                 }
1410         }
1411
1412         // Phew! Everything checks out. Now create an item.
1413
1414         // Find the original comment author information.
1415         // We need this to make sure we display the comment author
1416         // information (name and avatar) correctly.
1417         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1418                 $person = $contact;
1419         else {
1420                 $person = find_diaspora_person_by_handle($diaspora_handle);
1421
1422                 if(! is_array($person)) {
1423                         logger('diaspora_comment: unable to find author details');
1424                         return;
1425                 }
1426         }
1427
1428         $body = diaspora2bb($text);
1429         $message_id = $diaspora_handle . ':' . $guid;
1430
1431         $datarray = array();
1432
1433         $datarray['uid'] = $importer['uid'];
1434         $datarray['contact-id'] = $contact['id'];
1435         $datarray['type'] = 'remote-comment';
1436         $datarray['wall'] = $parent_item['wall'];
1437         $datarray['network']  = NETWORK_DIASPORA;
1438         $datarray['verb'] = ACTIVITY_POST;
1439         $datarray['gravity'] = GRAVITY_COMMENT;
1440         $datarray['guid'] = $guid;
1441         $datarray['uri'] = $message_id;
1442         $datarray['parent-uri'] = $parent_item['uri'];
1443
1444         // No timestamps for comments? OK, we'll the use current time.
1445         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
1446         $datarray['private'] = $parent_item['private'];
1447
1448         $datarray['owner-name'] = $parent_item['owner-name'];
1449         $datarray['owner-link'] = $parent_item['owner-link'];
1450         $datarray['owner-avatar'] = $parent_item['owner-avatar'];
1451
1452         $datarray['author-name'] = $person['name'];
1453         $datarray['author-link'] = $person['url'];
1454         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1455         $datarray['body'] = $body;
1456
1457         // We can't be certain what the original app is if the message is relayed.
1458         if(($parent_item['origin']) && (! $parent_author_signature))
1459                 $datarray['app']  = 'Diaspora';
1460
1461         DiasporaFetchGuid($datarray);
1462         $message_id = item_store($datarray);
1463
1464         //if($message_id) {
1465                 //q("update item set plink = '%s' where id = %d",
1466                 //      //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1467                 //      dbesc($a->get_baseurl().'/display/'.$datarray['guid']),
1468                 //      intval($message_id)
1469                 //);
1470         //}
1471
1472         if(($parent_item['origin']) && (! $parent_author_signature)) {
1473                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1474                         intval($message_id),
1475                         dbesc($signed_data),
1476                         dbesc(base64_encode($author_signature)),
1477                         dbesc($diaspora_handle)
1478                 );
1479
1480                 // if the message isn't already being relayed, notify others
1481                 // the existence of parent_author_signature means the parent_author or owner
1482                 // is already relaying.
1483
1484                 proc_run('php','include/notifier.php','comment-import',$message_id);
1485         }
1486
1487         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
1488                 dbesc($parent_item['uri']),
1489                 intval($importer['uid'])
1490         );
1491
1492         if(count($myconv)) {
1493                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
1494
1495                 foreach($myconv as $conv) {
1496
1497                         // now if we find a match, it means we're in this conversation
1498
1499                         if(! link_compare($conv['author-link'],$importer_url))
1500                                 continue;
1501
1502                         require_once('include/enotify.php');
1503
1504                         $conv_parent = $conv['parent'];
1505
1506                         notification(array(
1507                                 'type'         => NOTIFY_COMMENT,
1508                                 'notify_flags' => $importer['notify-flags'],
1509                                 'language'     => $importer['language'],
1510                                 'to_name'      => $importer['username'],
1511                                 'to_email'     => $importer['email'],
1512                                 'uid'          => $importer['uid'],
1513                                 'item'         => $datarray,
1514                                 'link'             => $a->get_baseurl().'/display/'.urlencode($datarray['guid']),
1515                                 'source_name'  => $datarray['author-name'],
1516                                 'source_link'  => $datarray['author-link'],
1517                                 'source_photo' => $datarray['author-avatar'],
1518                                 'verb'         => ACTIVITY_POST,
1519                                 'otype'        => 'item',
1520                                 'parent'       => $conv_parent,
1521                                 'parent_uri'   => $parent_uri
1522                         ));
1523
1524                         // only send one notification
1525                         break;
1526                 }
1527         }
1528         return;
1529 }
1530
1531
1532
1533
1534 function diaspora_conversation($importer,$xml,$msg) {
1535
1536         $a = get_app();
1537
1538         $guid = notags(unxmlify($xml->guid));
1539         $subject = notags(unxmlify($xml->subject));
1540         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1541         $participant_handles = notags(unxmlify($xml->participant_handles));
1542         $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1543
1544         $parent_uri = $diaspora_handle . ':' . $guid;
1545
1546         $messages = $xml->message;
1547
1548         if(! count($messages)) {
1549                 logger('diaspora_conversation: empty conversation');
1550                 return;
1551         }
1552
1553         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1554         if(! $contact) {
1555                 logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
1556                 return;
1557         }
1558
1559         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1560                 logger('diaspora_conversation: Ignoring this author.');
1561                 return 202;
1562         }
1563
1564         $conversation = null;
1565
1566         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1567                 intval($importer['uid']),
1568                 dbesc($guid)
1569         );
1570         if(count($c))
1571                 $conversation = $c[0];
1572         else {
1573                 $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
1574                         intval($importer['uid']),
1575                         dbesc($guid),
1576                         dbesc($diaspora_handle),
1577                         dbesc(datetime_convert('UTC','UTC',$created_at)),
1578                         dbesc(datetime_convert()),
1579                         dbesc($subject),
1580                         dbesc($participant_handles)
1581                 );
1582                 if($r)
1583                         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1584                 intval($importer['uid']),
1585             dbesc($guid)
1586         );
1587             if(count($c))
1588             $conversation = $c[0];
1589         }
1590         if(! $conversation) {
1591                 logger('diaspora_conversation: unable to create conversation.');
1592                 return;
1593         }
1594
1595         foreach($messages as $mesg) {
1596
1597                 $reply = 0;
1598
1599                 $msg_guid = notags(unxmlify($mesg->guid));
1600                 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1601                 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1602                 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1603                 $msg_text = unxmlify($mesg->text);
1604                 $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
1605                 $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
1606                 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1607                 if($msg_conversation_guid != $guid) {
1608                         logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
1609                         continue;
1610                 }
1611
1612                 $body = diaspora2bb($msg_text);
1613                 $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1614
1615                 $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1616
1617                 $author_signature = base64_decode($msg_author_signature);
1618
1619                 if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
1620                         $person = $contact;
1621                         $key = $msg['key'];
1622                 }
1623                 else {
1624                         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1625
1626                         if(is_array($person) && x($person,'pubkey'))
1627                                 $key = $person['pubkey'];
1628                         else {
1629                                 logger('diaspora_conversation: unable to find author details');
1630                                 continue;
1631                         }
1632                 }
1633
1634                 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1635                         logger('diaspora_conversation: verification failed.');
1636                         continue;
1637                 }
1638
1639                 if($msg_parent_author_signature) {
1640                         $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1641
1642                         $parent_author_signature = base64_decode($msg_parent_author_signature);
1643
1644                         $key = $msg['key'];
1645
1646                         if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
1647                                 logger('diaspora_conversation: owner verification failed.');
1648                                 continue;
1649                         }
1650                 }
1651
1652                 $r = q("select id from mail where `uri` = '%s' limit 1",
1653                         dbesc($message_id)
1654                 );
1655                 if(count($r)) {
1656                         logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
1657                         continue;
1658                 }
1659
1660                 q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1661                         intval($importer['uid']),
1662                         dbesc($msg_guid),
1663                         intval($conversation['id']),
1664                         dbesc($person['name']),
1665                         dbesc($person['photo']),
1666                         dbesc($person['url']),
1667                         intval($contact['id']),
1668                         dbesc($subject),
1669                         dbesc($body),
1670                         0,
1671                         0,
1672                         dbesc($message_id),
1673                         dbesc($parent_uri),
1674                         dbesc($msg_created_at)
1675                 );
1676
1677                 q("update conv set updated = '%s' where id = %d",
1678                         dbesc(datetime_convert()),
1679                         intval($conversation['id'])
1680                 );
1681
1682                 require_once('include/enotify.php');
1683                 notification(array(
1684                         'type' => NOTIFY_MAIL,
1685                         'notify_flags' => $importer['notify-flags'],
1686                         'language' => $importer['language'],
1687                         'to_name' => $importer['username'],
1688                         'to_email' => $importer['email'],
1689                         'uid' =>$importer['importer_uid'],
1690                         'item' => array('subject' => $subject, 'body' => $body),
1691                         'source_name' => $person['name'],
1692                         'source_link' => $person['url'],
1693                         'source_photo' => $person['thumb'],
1694                         'verb' => ACTIVITY_POST,
1695                         'otype' => 'mail'
1696                 ));
1697         }
1698
1699         return;
1700 }
1701
1702 function diaspora_message($importer,$xml,$msg) {
1703
1704         $a = get_app();
1705
1706         $msg_guid = notags(unxmlify($xml->guid));
1707         $msg_parent_guid = notags(unxmlify($xml->parent_guid));
1708         $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
1709         $msg_author_signature = notags(unxmlify($xml->author_signature));
1710         $msg_text = unxmlify($xml->text);
1711         $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1712         $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1713         $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
1714
1715         $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
1716
1717         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
1718         if(! $contact) {
1719                 logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
1720                 return;
1721         }
1722
1723         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1724                 logger('diaspora_message: Ignoring this author.');
1725                 return 202;
1726         }
1727
1728         $conversation = null;
1729
1730         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1731                 intval($importer['uid']),
1732                 dbesc($msg_conversation_guid)
1733         );
1734         if(count($c))
1735                 $conversation = $c[0];
1736         else {
1737                 logger('diaspora_message: conversation not available.');
1738                 return;
1739         }
1740
1741         $reply = 0;
1742
1743         $body = diaspora2bb($msg_text);
1744         $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1745
1746         $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1747
1748
1749         $author_signature = base64_decode($msg_author_signature);
1750
1751         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1752         if(is_array($person) && x($person,'pubkey'))
1753                 $key = $person['pubkey'];
1754         else {
1755                 logger('diaspora_message: unable to find author details');
1756                 return;
1757         }
1758
1759         if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1760                 logger('diaspora_message: verification failed.');
1761                 return;
1762         }
1763
1764         $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
1765                 dbesc($message_id),
1766                 intval($importer['uid'])
1767         );
1768         if(count($r)) {
1769                 logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
1770                 return;
1771         }
1772
1773         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')",
1774                 intval($importer['uid']),
1775                 dbesc($msg_guid),
1776                 intval($conversation['id']),
1777                 dbesc($person['name']),
1778                 dbesc($person['photo']),
1779                 dbesc($person['url']),
1780                 intval($contact['id']),
1781                 dbesc($conversation['subject']),
1782                 dbesc($body),
1783                 0,
1784                 1,
1785                 dbesc($message_id),
1786                 dbesc($parent_uri),
1787                 dbesc($msg_created_at)
1788         );
1789
1790         q("update conv set updated = '%s' where id = %d",
1791                 dbesc(datetime_convert()),
1792                 intval($conversation['id'])
1793         );
1794
1795         return;
1796 }
1797
1798
1799 function diaspora_photo($importer,$xml,$msg,$attempt=1) {
1800
1801         $a = get_app();
1802
1803         logger('diaspora_photo: init',LOGGER_DEBUG);
1804
1805         $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
1806
1807         $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
1808
1809         $status_message_guid = notags(unxmlify($xml->status_message_guid));
1810
1811         $guid = notags(unxmlify($xml->guid));
1812
1813         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1814
1815         $public = notags(unxmlify($xml->public));
1816
1817         $created_at = notags(unxmlify($xml_created_at));
1818
1819         logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
1820
1821         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1822         if(! $contact) {
1823                 logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
1824                 return;
1825         }
1826
1827         if(! diaspora_post_allow($importer,$contact)) {
1828                 logger('diaspora_photo: Ignoring this author.');
1829                 return 202;
1830         }
1831
1832         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1833                 intval($importer['uid']),
1834                 dbesc($status_message_guid)
1835         );
1836         if(! count($r)) {
1837                 if($attempt <= 3) {
1838                         q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)",
1839                            intval($importer['uid']),
1840                            dbesc(serialize($msg)),
1841                            intval($attempt + 1)
1842                         );
1843                 }
1844                 logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid);
1845                 return;
1846         }
1847
1848         $parent_item = $r[0];
1849
1850         $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
1851
1852         $link_text = scale_external_images($link_text, true,
1853                                            array($remote_photo_name, 'scaled_full_' . $remote_photo_name));
1854
1855         if(strpos($parent_item['body'],$link_text) === false) {
1856                 $r = q("UPDATE `item` SET `body` = '%s', `visible` = 1 WHERE `id` = %d AND `uid` = %d",
1857                         dbesc($link_text . $parent_item['body']),
1858                         intval($parent_item['id']),
1859                         intval($parent_item['uid'])
1860                 );
1861                 update_thread($parent_item['id']);
1862         }
1863
1864         return;
1865 }
1866
1867
1868
1869
1870 function diaspora_like($importer,$xml,$msg) {
1871
1872         $a = get_app();
1873         $guid = notags(unxmlify($xml->guid));
1874         $parent_guid = notags(unxmlify($xml->parent_guid));
1875         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1876         $target_type = notags(unxmlify($xml->target_type));
1877         $positive = notags(unxmlify($xml->positive));
1878         $author_signature = notags(unxmlify($xml->author_signature));
1879
1880         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1881
1882         // likes on comments not supported here and likes on photos not supported by Diaspora
1883
1884 //      if($target_type !== 'Post')
1885 //              return;
1886
1887         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1888         if(! $contact) {
1889                 logger('diaspora_like: cannot find contact: ' . $msg['author']);
1890                 return;
1891         }
1892
1893         if(! diaspora_post_allow($importer,$contact)) {
1894                 logger('diaspora_like: Ignoring this author.');
1895                 return 202;
1896         }
1897
1898         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1899                 intval($importer['uid']),
1900                 dbesc($parent_guid)
1901         );
1902         if(! count($r)) {
1903                 logger('diaspora_like: parent item not found: ' . $guid);
1904                 return;
1905         }
1906
1907         $parent_item = $r[0];
1908
1909         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1910                 intval($importer['uid']),
1911                 dbesc($guid)
1912         );
1913         if(count($r)) {
1914                 if($positive === 'true') {
1915                         logger('diaspora_like: duplicate like: ' . $guid);
1916                         return;
1917                 }
1918                 // Note: I don't think "Like" objects with positive = "false" are ever actually used
1919                 // It looks like "RelayableRetractions" are used for "unlike" instead
1920                 if($positive === 'false') {
1921                         logger('diaspora_like: received a like with positive set to "false"...ignoring');
1922 /*                      q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d",
1923                                 intval($r[0]['id']),
1924                                 intval($importer['uid'])
1925                         );*/
1926                         // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
1927                         //  send notification via proc_run()
1928                         return;
1929                 }
1930         }
1931         // Note: I don't think "Like" objects with positive = "false" are ever actually used
1932         // It looks like "RelayableRetractions" are used for "unlike" instead
1933         if($positive === 'false') {
1934                 logger('diaspora_like: received a like with positive set to "false"');
1935                 logger('diaspora_like: unlike received with no corresponding like...ignoring');
1936                 return;
1937         }
1938
1939
1940         /* How Diaspora performs "like" signature checking:
1941
1942            - If an item has been sent by the like author to the top-level post owner to relay on
1943              to the rest of the contacts on the top-level post, the top-level post owner should check
1944              the author_signature, then create a parent_author_signature before relaying the like on
1945            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1946              check only the parent_author_signature. Basically, they trust that the top-level post
1947              owner has already verified the authenticity of anything he/she sends out
1948            - In either case, the signature that get checked is the signature created by the person
1949              who sent the salmon
1950         */
1951
1952         // Diaspora has changed the way they are signing the likes.
1953         // Just to make sure that we don't miss any likes we will check the old and the current way.
1954         $old_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
1955
1956         $signed_data = $positive . ';' . $guid . ';' . $target_type . ';' . $parent_guid . ';' . $diaspora_handle;
1957
1958         $key = $msg['key'];
1959
1960         if ($parent_author_signature) {
1961                 // If a parent_author_signature exists, then we've received the like
1962                 // relayed from the top-level post owner. There's no need to check the
1963                 // author_signature if the parent_author_signature is valid
1964
1965                 $parent_author_signature = base64_decode($parent_author_signature);
1966
1967                 if (!rsa_verify($signed_data,$parent_author_signature,$key,'sha256') AND
1968                         !rsa_verify($old_signed_data,$parent_author_signature,$key,'sha256')) {
1969
1970                         logger('diaspora_like: top-level owner verification failed.');
1971                         return;
1972                 }
1973         } else {
1974                 // If there's no parent_author_signature, then we've received the like
1975                 // from the like creator. In that case, the person is "like"ing
1976                 // our post, so he/she must be a contact of ours and his/her public key
1977                 // should be in $msg['key']
1978
1979                 $author_signature = base64_decode($author_signature);
1980
1981                 if (!rsa_verify($signed_data,$author_signature,$key,'sha256') AND
1982                         !rsa_verify($old_signed_data,$author_signature,$key,'sha256')) {
1983
1984                         logger('diaspora_like: like creator verification failed.');
1985                         return;
1986                 }
1987         }
1988
1989         // Phew! Everything checks out. Now create an item.
1990
1991         // Find the original comment author information.
1992         // We need this to make sure we display the comment author
1993         // information (name and avatar) correctly.
1994         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1995                 $person = $contact;
1996         else {
1997                 $person = find_diaspora_person_by_handle($diaspora_handle);
1998
1999                 if(! is_array($person)) {
2000                         logger('diaspora_like: unable to find author details');
2001                         return;
2002                 }
2003         }
2004
2005         $uri = $diaspora_handle . ':' . $guid;
2006
2007         $activity = ACTIVITY_LIKE;
2008         $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
2009         $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
2010         $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
2011         $body = $parent_item['body'];
2012
2013         $obj = <<< EOT
2014
2015         <object>
2016                 <type>$objtype</type>
2017                 <local>1</local>
2018                 <id>{$parent_item['uri']}</id>
2019                 <link>$link</link>
2020                 <title></title>
2021                 <content>$body</content>
2022         </object>
2023 EOT;
2024         $bodyverb = t('%1$s likes %2$s\'s %3$s');
2025
2026         $arr = array();
2027
2028         $arr['uri'] = $uri;
2029         $arr['uid'] = $importer['uid'];
2030         $arr['guid'] = $guid;
2031         $arr['network']  = NETWORK_DIASPORA;
2032         $arr['contact-id'] = $contact['id'];
2033         $arr['type'] = 'activity';
2034         $arr['wall'] = $parent_item['wall'];
2035         $arr['gravity'] = GRAVITY_LIKE;
2036         $arr['parent'] = $parent_item['id'];
2037         $arr['parent-uri'] = $parent_item['uri'];
2038
2039         $arr['owner-name'] = $parent_item['name'];
2040         $arr['owner-link'] = $parent_item['url'];
2041         //$arr['owner-avatar'] = $parent_item['thumb'];
2042         $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']);
2043
2044         $arr['author-name'] = $person['name'];
2045         $arr['author-link'] = $person['url'];
2046         $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
2047
2048         $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2049         $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
2050         //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
2051         $plink = '[url='.$a->get_baseurl().'/display/'.urlencode($guid).']'.$post_type.'[/url]';
2052         $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
2053
2054         $arr['app']  = 'Diaspora';
2055
2056         $arr['private'] = $parent_item['private'];
2057         $arr['verb'] = $activity;
2058         $arr['object-type'] = $objtype;
2059         $arr['object'] = $obj;
2060         $arr['visible'] = 1;
2061         $arr['unseen'] = 1;
2062         $arr['last-child'] = 0;
2063
2064         $message_id = item_store($arr);
2065
2066
2067         //if($message_id) {
2068         //      q("update item set plink = '%s' where id = %d",
2069         //              //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
2070         //              dbesc($a->get_baseurl().'/display/'.$guid),
2071         //              intval($message_id)
2072         //      );
2073         //}
2074
2075         if(! $parent_author_signature) {
2076                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2077                         intval($message_id),
2078                         dbesc($signed_data),
2079                         dbesc(base64_encode($author_signature)),
2080                         dbesc($diaspora_handle)
2081                 );
2082         }
2083
2084         // if the message isn't already being relayed, notify others
2085         // the existence of parent_author_signature means the parent_author or owner
2086         // is already relaying. The parent_item['origin'] indicates the message was created on our system
2087
2088         if(($parent_item['origin']) && (! $parent_author_signature))
2089                 proc_run('php','include/notifier.php','comment-import',$message_id);
2090
2091         return;
2092 }
2093
2094 function diaspora_retraction($importer,$xml) {
2095
2096
2097         $guid = notags(unxmlify($xml->guid));
2098         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2099         $type = notags(unxmlify($xml->type));
2100
2101         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2102         if(! $contact)
2103                 return;
2104
2105         if($type === 'Person') {
2106                 require_once('include/Contact.php');
2107                 contact_remove($contact['id']);
2108         }
2109         elseif($type === 'Post') {
2110                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2111                         dbesc('guid'),
2112                         intval($importer['uid'])
2113                 );
2114                 if(count($r)) {
2115                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2116                                 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d",
2117                                         dbesc(datetime_convert()),
2118                                         intval($r[0]['id'])
2119                                 );
2120                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2121                         }
2122                 }
2123         }
2124
2125         return 202;
2126         // NOTREACHED
2127 }
2128
2129 function diaspora_signed_retraction($importer,$xml,$msg) {
2130
2131
2132         $guid = notags(unxmlify($xml->target_guid));
2133         $diaspora_handle = notags(unxmlify($xml->sender_handle));
2134         $type = notags(unxmlify($xml->target_type));
2135         $sig = notags(unxmlify($xml->target_author_signature));
2136
2137         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
2138
2139         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2140         if(! $contact) {
2141                 logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']);
2142                 return;
2143         }
2144
2145
2146         $signed_data = $guid . ';' . $type ;
2147         $key = $msg['key'];
2148
2149         /* How Diaspora performs relayable_retraction signature checking:
2150
2151            - If an item has been sent by the item author to the top-level post owner to relay on
2152              to the rest of the contacts on the top-level post, the top-level post owner checks
2153              the author_signature, then creates a parent_author_signature before relaying the item on
2154            - If an item has been relayed on by the top-level post owner, the contacts who receive it
2155              check only the parent_author_signature. Basically, they trust that the top-level post
2156              owner has already verified the authenticity of anything he/she sends out
2157            - In either case, the signature that get checked is the signature created by the person
2158              who sent the salmon
2159         */
2160
2161         if($parent_author_signature) {
2162
2163                 $parent_author_signature = base64_decode($parent_author_signature);
2164
2165                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2166                         logger('diaspora_signed_retraction: top-level post owner verification failed');
2167                         return;
2168                 }
2169
2170         }
2171         else {
2172
2173                 $sig_decode = base64_decode($sig);
2174
2175                 if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
2176                         logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
2177                         return;
2178                 }
2179         }
2180
2181         if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
2182                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2183                         dbesc($guid),
2184                         intval($importer['uid'])
2185                 );
2186                 if(count($r)) {
2187                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2188                                 q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d",
2189                                         dbesc(datetime_convert()),
2190                                         dbesc(datetime_convert()),
2191                                         intval($r[0]['id'])
2192                                 );
2193                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2194
2195                                 // Now check if the retraction needs to be relayed by us
2196                                 //
2197                                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2198                                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2199                                 // The only item with `parent` and `id` as the parent id is the parent item.
2200                                 $p = q("select origin from item where parent = %d and id = %d limit 1",
2201                                         $r[0]['parent'],
2202                                         $r[0]['parent']
2203                                 );
2204                                 if(count($p)) {
2205                                         if(($p[0]['origin']) && (! $parent_author_signature)) {
2206                                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2207                                                         $r[0]['id'],
2208                                                         dbesc($signed_data),
2209                                                         dbesc($sig),
2210                                                         dbesc($diaspora_handle)
2211                                                 );
2212
2213                                                 // the existence of parent_author_signature would have meant the parent_author or owner
2214                                                 // is already relaying.
2215                                                 logger('diaspora_signed_retraction: relaying relayable_retraction');
2216
2217                                                 proc_run('php','include/notifier.php','drop',$r[0]['id']);
2218                                         }
2219                                 }
2220                         }
2221                 }
2222         }
2223         else
2224                 logger('diaspora_signed_retraction: unknown type: ' . $type);
2225
2226         return 202;
2227         // NOTREACHED
2228 }
2229
2230 function diaspora_profile($importer,$xml,$msg) {
2231
2232         $a = get_app();
2233         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2234
2235
2236         if($diaspora_handle != $msg['author']) {
2237                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
2238                 return 202;
2239         }
2240
2241         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2242         if(! $contact)
2243                 return;
2244
2245         if($contact['blocked']) {
2246                 logger('diaspora_post: Ignoring this author.');
2247                 return 202;
2248         }
2249
2250         $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
2251         $image_url = unxmlify($xml->image_url);
2252         $birthday = unxmlify($xml->birthday);
2253         $location = diaspora2bb(unxmlify($xml->location));
2254         $about = diaspora2bb(unxmlify($xml->bio));
2255         $gender = unxmlify($xml->gender);
2256         $tags = unxmlify($xml->tag_string);
2257
2258         $tags = explode("#", $tags);
2259
2260         $keywords = array();
2261         foreach ($tags as $tag) {
2262                 $tag = trim(strtolower($tag));
2263                 if ($tag != "")
2264                         $keywords[] = $tag;
2265         }
2266
2267         $keywords = implode(", ", $keywords);
2268
2269         $handle_parts = explode("@", $diaspora_handle);
2270         if($name === '') {
2271                 $name = $handle_parts[0];
2272         }
2273
2274         if( preg_match("|^https?://|", $image_url) === 0) {
2275                 $image_url = "http://" . $handle_parts[1] . $image_url;
2276         }
2277
2278 /*      $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
2279                 intval($importer['uid']),
2280                 intval($contact['id'])
2281         );
2282         $oldphotos = ((count($r)) ? $r : null);*/
2283
2284         require_once('include/Photo.php');
2285
2286         $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
2287
2288         // Generic birthday. We don't know the timezone. The year is irrelevant.
2289
2290         $birthday = str_replace('1000','1901',$birthday);
2291
2292         $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
2293
2294         // this is to prevent multiple birthday notifications in a single year
2295         // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2296
2297         if(substr($birthday,5) === substr($contact['bd'],5))
2298                 $birthday = $contact['bd'];
2299
2300         // TODO: update name on item['author-name'] if the name changed. See consume_feed()
2301         // Not doing this currently because D* protocol is scheduled for revision soon.
2302
2303         $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2304                 dbesc($name),
2305                 dbesc(datetime_convert()),
2306                 dbesc($images[0]),
2307                 dbesc($images[1]),
2308                 dbesc($images[2]),
2309                 dbesc(datetime_convert()),
2310                 dbesc($birthday),
2311                 dbesc($location),
2312                 dbesc($about),
2313                 dbesc($keywords),
2314                 dbesc($gender),
2315                 intval($contact['id']),
2316                 intval($importer['uid'])
2317         );
2318
2319         if (unxmlify($xml->searchable) == "true") {
2320                 require_once('include/socgraph.php');
2321                 poco_check($contact['url'], $name, NETWORK_DIASPORA, $images[0], $about, $location, $gender, $keywords, "",
2322                         datetime_convert(), 2, $contact['id'], $importer['uid']);
2323         }
2324
2325         $profileurl = "";
2326         $author = q("SELECT * FROM `unique_contacts` WHERE `url`='%s' LIMIT 1",
2327                         dbesc(normalise_link($contact['url'])));
2328
2329         if (count($author) == 0) {
2330                 q("INSERT INTO `unique_contacts` (`url`, `name`, `avatar`, `location`, `about`) VALUES ('%s', '%s', '%s', '%s', '%s')",
2331                         dbesc(normalise_link($contact['url'])), dbesc($name), dbesc($location), dbesc($about), dbesc($images[0]));
2332
2333                 $author = q("SELECT id FROM unique_contacts WHERE url='%s' LIMIT 1",
2334                         dbesc(normalise_link($contact['url'])));
2335         } else if (normalise_link($contact['url']).$name.$location.$about != normalise_link($author[0]["url"]).$author[0]["name"].$author[0]["location"].$author[0]["about"]) {
2336                 q("UPDATE unique_contacts SET name = '%s', avatar = '%s', `location` = '%s', `about` = '%s' WHERE url = '%s'",
2337                 dbesc($name), dbesc($images[0]), dbesc($location), dbesc($about), dbesc(normalise_link($contact['url'])));
2338         }
2339
2340 /*      if($r) {
2341                 if($oldphotos) {
2342                         foreach($oldphotos as $ph) {
2343                                 q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
2344                                         intval($importer['uid']),
2345                                         intval($contact['id']),
2346                                         dbesc($ph['resource-id'])
2347                                 );
2348                         }
2349                 }
2350         }       */
2351
2352         return;
2353
2354 }
2355
2356 function diaspora_share($me,$contact) {
2357         $a = get_app();
2358         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2359         $theiraddr = $contact['addr'];
2360
2361         $tpl = get_markup_template('diaspora_share.tpl');
2362         $msg = replace_macros($tpl, array(
2363                 '$sender' => $myaddr,
2364                 '$recipient' => $theiraddr
2365         ));
2366
2367         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2368         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2369
2370         return(diaspora_transmit($owner,$contact,$slap, false));
2371 }
2372
2373 function diaspora_unshare($me,$contact) {
2374
2375         $a = get_app();
2376         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2377
2378         $tpl = get_markup_template('diaspora_retract.tpl');
2379         $msg = replace_macros($tpl, array(
2380                 '$guid'   => $me['guid'],
2381                 '$type'   => 'Person',
2382                 '$handle' => $myaddr
2383         ));
2384
2385         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2386         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2387
2388         return(diaspora_transmit($owner,$contact,$slap, false));
2389
2390 }
2391
2392
2393 function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
2394
2395         $a = get_app();
2396         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2397         $theiraddr = $contact['addr'];
2398
2399         $images = array();
2400
2401         $title = $item['title'];
2402         $body = $item['body'];
2403
2404 /*
2405         // We're trying to match Diaspora's split message/photo protocol but
2406         // all the photos are displayed on D* as links and not img's - even
2407         // though we're sending pretty much precisely what they send us when
2408         // doing the same operation.
2409         // Commented out for now, we'll use bb2diaspora to convert photos to markdown
2410         // which seems to get through intact.
2411
2412         $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
2413         if($cnt) {
2414                 foreach($matches as $mtch) {
2415                         $detail = array();
2416                         $detail['str'] = $mtch[0];
2417                         $detail['path'] = dirname($mtch[1]) . '/';
2418                         $detail['file'] = basename($mtch[1]);
2419                         $detail['guid'] = $item['guid'];
2420                         $detail['handle'] = $myaddr;
2421                         $images[] = $detail;
2422                         $body = str_replace($detail['str'],$mtch[1],$body);
2423                 }
2424         }
2425 */
2426
2427         //if(strlen($title))
2428         //      $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
2429
2430         // convert to markdown
2431         $body = xmlify(html_entity_decode(bb2diaspora($body)));
2432         //$body = bb2diaspora($body);
2433
2434         // Adding the title
2435         if(strlen($title))
2436                 $body = "## ".html_entity_decode($title)."\n\n".$body;
2437
2438         if($item['attach']) {
2439                 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
2440                 if(cnt) {
2441                         $body .= "\n" . t('Attachments:') . "\n";
2442                         foreach($matches as $mtch) {
2443                                 $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
2444                         }
2445                 }
2446         }
2447
2448
2449         $public = (($item['private']) ? 'false' : 'true');
2450
2451         require_once('include/datetime.php');
2452         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2453
2454         // Detect a share element and do a reshare
2455         // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb
2456         if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) {
2457                 $tpl = get_markup_template('diaspora_reshare.tpl');
2458                 $msg = replace_macros($tpl, array(
2459                         '$root_handle' => xmlify($ret['root_handle']),
2460                         '$root_guid' => $ret['root_guid'],
2461                         '$guid' => $item['guid'],
2462                         '$handle' => xmlify($myaddr),
2463                         '$public' => $public,
2464                         '$created' => $created,
2465                         '$provider' => $item["app"]
2466                 ));
2467         } else {
2468                 $tpl = get_markup_template('diaspora_post.tpl');
2469                 $msg = replace_macros($tpl, array(
2470                         '$body' => $body,
2471                         '$guid' => $item['guid'],
2472                         '$handle' => xmlify($myaddr),
2473                         '$public' => $public,
2474                         '$created' => $created,
2475                         '$provider' => $item["app"]
2476                 ));
2477         }
2478
2479         logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA);
2480
2481         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2482         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2483
2484         $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
2485
2486         logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG);
2487
2488         if(count($images)) {
2489                 diaspora_send_images($item,$owner,$contact,$images,$public_batch);
2490         }
2491
2492         return $return_code;
2493 }
2494
2495 function diaspora_is_reshare($body) {
2496         $body = trim($body);
2497
2498         // Skip if it isn't a pure repeated messages
2499         // Does it start with a share?
2500         if (strpos($body, "[share") > 0)
2501                 return(false);
2502
2503         // Does it end with a share?
2504         if (strlen($body) > (strrpos($body, "[/share]") + 8))
2505                 return(false);
2506
2507         $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2508         // Skip if there is no shared message in there
2509         if ($body == $attributes)
2510                 return(false);
2511
2512         $guid = "";
2513         preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2514         if ($matches[1] != "")
2515                 $guid = $matches[1];
2516
2517         preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2518         if ($matches[1] != "")
2519                 $guid = $matches[1];
2520
2521         if ($guid != "") {
2522                 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2523                         dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2524                 if ($r) {
2525                         $ret= array();
2526                         $ret["root_handle"] = diaspora_handle_from_contact($r[0]["contact-id"]);
2527                         $ret["root_guid"] = $guid;
2528                         return($ret);
2529                 }
2530         }
2531
2532         $profile = "";
2533         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2534         if ($matches[1] != "")
2535                 $profile = $matches[1];
2536
2537         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2538         if ($matches[1] != "")
2539                 $profile = $matches[1];
2540
2541         $ret= array();
2542
2543         $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2544         if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2545                 return(false);
2546
2547         $link = "";
2548         preg_match("/link='(.*?)'/ism", $attributes, $matches);
2549         if ($matches[1] != "")
2550                 $link = $matches[1];
2551
2552         preg_match('/link="(.*?)"/ism', $attributes, $matches);
2553         if ($matches[1] != "")
2554                 $link = $matches[1];
2555
2556         $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2557         if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
2558                 return(false);
2559
2560         return($ret);
2561 }
2562
2563 function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
2564         $a = get_app();
2565         if(! count($images))
2566                 return;
2567         $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
2568
2569         $tpl = get_markup_template('diaspora_photo.tpl');
2570         foreach($images as $image) {
2571                 if(! stristr($image['path'],$mysite))
2572                         continue;
2573                 $resource = str_replace('.jpg','',$image['file']);
2574                 $resource = substr($resource,0,strpos($resource,'-'));
2575
2576                 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
2577                         dbesc($resource),
2578                         intval($owner['uid'])
2579                 );
2580                 if(! count($r))
2581                         continue;
2582                 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
2583                 $msg = replace_macros($tpl,array(
2584                         '$path' => xmlify($image['path']),
2585                         '$filename' => xmlify($image['file']),
2586                         '$msg_guid' => xmlify($image['guid']),
2587                         '$guid' => xmlify($r[0]['guid']),
2588                         '$handle' => xmlify($image['handle']),
2589                         '$public' => xmlify($public),
2590                         '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
2591                 ));
2592
2593
2594                 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
2595                 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2596                 //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2597
2598                 diaspora_transmit($owner,$contact,$slap,$public_batch);
2599         }
2600
2601 }
2602
2603 function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
2604
2605         $a = get_app();
2606         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2607 //      $theiraddr = $contact['addr'];
2608
2609         // Diaspora doesn't support threaded comments, but some
2610         // versions of Diaspora (i.e. Diaspora-pistos) support
2611         // likes on comments
2612         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2613                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2614                         dbesc($item['thr-parent'])
2615                       );
2616         }
2617         else {
2618                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2619                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2620                 // The only item with `parent` and `id` as the parent id is the parent item.
2621                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2622                         intval($item['parent']),
2623                         intval($item['parent'])
2624                 );
2625         }
2626         if(count($p))
2627                 $parent = $p[0];
2628         else
2629                 return;
2630
2631         if($item['verb'] === ACTIVITY_LIKE) {
2632                 $tpl = get_markup_template('diaspora_like.tpl');
2633                 $like = true;
2634                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2635 //              $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post');
2636 //              $positive = (($item['deleted']) ? 'false' : 'true');
2637                 $positive = 'true';
2638
2639                 if(($item['deleted']))
2640                         logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
2641         }
2642         else {
2643                 $tpl = get_markup_template('diaspora_comment.tpl');
2644                 $like = false;
2645         }
2646
2647         $text = html_entity_decode(bb2diaspora($item['body']));
2648
2649         // sign it
2650
2651         if($like)
2652                 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr;
2653         else
2654                 $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr;
2655
2656         $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2657
2658         $msg = replace_macros($tpl,array(
2659                 '$guid' => xmlify($item['guid']),
2660                 '$parent_guid' => xmlify($parent['guid']),
2661                 '$target_type' =>xmlify($target_type),
2662                 '$authorsig' => xmlify($authorsig),
2663                 '$body' => xmlify($text),
2664                 '$positive' => xmlify($positive),
2665                 '$handle' => xmlify($myaddr)
2666         ));
2667
2668         logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
2669
2670         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2671         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2672
2673         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2674 }
2675
2676
2677 function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
2678
2679
2680         $a = get_app();
2681         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2682 //      $theiraddr = $contact['addr'];
2683
2684         $body = $item['body'];
2685         $text = html_entity_decode(bb2diaspora($body));
2686
2687         // Diaspora doesn't support threaded comments, but some
2688         // versions of Diaspora (i.e. Diaspora-pistos) support
2689         // likes on comments
2690         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2691                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2692                         dbesc($item['thr-parent'])
2693                       );
2694         }
2695         else {
2696                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2697                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2698                 // The only item with `parent` and `id` as the parent id is the parent item.
2699                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2700                        intval($item['parent']),
2701                        intval($item['parent'])
2702                       );
2703         }
2704         if(count($p))
2705                 $parent = $p[0];
2706         else
2707                 return;
2708
2709         $like = false;
2710         $relay_retract = false;
2711         $sql_sign_id = 'iid';
2712         if( $item['deleted']) {
2713                 $relay_retract = true;
2714
2715                 $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2716
2717                 $sql_sign_id = 'retract_iid';
2718                 $tpl = get_markup_template('diaspora_relayable_retraction.tpl');
2719         }
2720         elseif($item['verb'] === ACTIVITY_LIKE) {
2721                 $like = true;
2722
2723                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2724 //              $positive = (($item['deleted']) ? 'false' : 'true');
2725                 $positive = 'true';
2726
2727                 $tpl = get_markup_template('diaspora_like_relay.tpl');
2728         }
2729         else { // item is a comment
2730                 $tpl = get_markup_template('diaspora_comment_relay.tpl');
2731         }
2732
2733
2734         // fetch the original signature if the relayable was created by a Diaspora
2735         // or DFRN user. Relayables for other networks are not supported.
2736
2737 /*      $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
2738                 intval($item['id'])
2739         );
2740         if(count($r)) {
2741                 $orig_sign = $r[0];
2742                 $signed_text = $orig_sign['signed_text'];
2743                 $authorsig = $orig_sign['signature'];
2744                 $handle = $orig_sign['signer'];
2745         }
2746         else {
2747
2748                 // Author signature information (for likes, comments, and retractions of likes or comments,
2749                 // whether from Diaspora or Friendica) must be placed in the `sign` table before this
2750                 // function is called
2751                 logger('diaspora_send_relay: original author signature not found, cannot send relayable');
2752                 return;
2753         }*/
2754
2755         /* Since the author signature is only checked by the parent, not by the relay recipients,
2756          * I think it may not be necessary for us to do so much work to preserve all the original
2757          * signatures. The important thing that Diaspora DOES need is the original creator's handle.
2758          * Let's just generate that and forget about all the original author signature stuff.
2759          *
2760          * Note: this might be more of an problem if we want to support likes on comments for older
2761          * versions of Diaspora (diaspora-pistos), but since there are a number of problems with
2762          * doing that, let's ignore it for now.
2763          *
2764          * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't
2765          * been done yet
2766          */
2767
2768         $handle = diaspora_handle_from_contact($item['contact-id']);
2769         if(! $handle)
2770                 return;
2771
2772
2773         if($relay_retract)
2774                 $sender_signed_text = $item['guid'] . ';' . $target_type;
2775         elseif($like)
2776                 $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle;
2777         else
2778                 $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle;
2779
2780         // Sign the relayable with the top-level owner's signature
2781         //
2782         // We'll use the $sender_signed_text that we just created, instead of the $signed_text
2783         // stored in the database, because that provides the best chance that Diaspora will
2784         // be able to reconstruct the signed text the same way we did. This is particularly a
2785         // concern for the comment, whose signed text includes the text of the comment. The
2786         // smallest change in the text of the comment, including removing whitespace, will
2787         // make the signature verification fail. Since we translate from BB code to Diaspora's
2788         // markup at the top of this function, which is AFTER we placed the original $signed_text
2789         // in the database, it's hazardous to trust the original $signed_text.
2790
2791         $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256'));
2792
2793         $msg = replace_macros($tpl,array(
2794                 '$guid' => xmlify($item['guid']),
2795                 '$parent_guid' => xmlify($parent['guid']),
2796                 '$target_type' =>xmlify($target_type),
2797                 '$authorsig' => xmlify($authorsig),
2798                 '$parentsig' => xmlify($parentauthorsig),
2799                 '$body' => xmlify($text),
2800                 '$positive' => xmlify($positive),
2801                 '$handle' => xmlify($handle)
2802         ));
2803
2804         logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
2805
2806
2807         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2808         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2809
2810         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2811
2812 }
2813
2814
2815
2816 function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
2817
2818         $a = get_app();
2819         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2820
2821         // Check whether the retraction is for a top-level post or whether it's a relayable
2822         if( $item['uri'] !== $item['parent-uri'] ) {
2823
2824                 $tpl = get_markup_template('diaspora_relay_retraction.tpl');
2825                 $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2826         }
2827         else {
2828
2829                 $tpl = get_markup_template('diaspora_signed_retract.tpl');
2830                 $target_type = 'StatusMessage';
2831         }
2832
2833         $signed_text = $item['guid'] . ';' . $target_type;
2834
2835         $msg = replace_macros($tpl, array(
2836                 '$guid'   => xmlify($item['guid']),
2837                 '$type'   => xmlify($target_type),
2838                 '$handle' => xmlify($myaddr),
2839                 '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
2840         ));
2841
2842         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2843         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2844
2845         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2846 }
2847
2848 function diaspora_send_mail($item,$owner,$contact) {
2849
2850         $a = get_app();
2851         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2852
2853         $r = q("select * from conv where id = %d and uid = %d limit 1",
2854                 intval($item['convid']),
2855                 intval($item['uid'])
2856         );
2857
2858         if(! count($r)) {
2859                 logger('diaspora_send_mail: conversation not found.');
2860                 return;
2861         }
2862         $cnv = $r[0];
2863
2864         $conv = array(
2865                 'guid' => xmlify($cnv['guid']),
2866                 'subject' => xmlify($cnv['subject']),
2867                 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
2868                 'diaspora_handle' => xmlify($cnv['creator']),
2869                 'participant_handles' => xmlify($cnv['recips'])
2870         );
2871
2872         $body = bb2diaspora($item['body']);
2873         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2874
2875         $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';'
2876                 . $created . ';' . $myaddr . ';' . $cnv['guid'];
2877
2878         $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2879
2880         $msg = array(
2881                 'guid' => xmlify($item['guid']),
2882                 'parent_guid' => xmlify($cnv['guid']),
2883                 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
2884                 'author_signature' => xmlify($sig),
2885                 'text' => xmlify($body),
2886                 'created_at' => xmlify($created),
2887                 'diaspora_handle' => xmlify($myaddr),
2888                 'conversation_guid' => xmlify($cnv['guid'])
2889         );
2890
2891         if($item['reply']) {
2892                 $tpl = get_markup_template('diaspora_message.tpl');
2893                 $xmsg = replace_macros($tpl, array('$msg' => $msg));
2894         }
2895         else {
2896                 $conv['messages'] = array($msg);
2897                 $tpl = get_markup_template('diaspora_conversation.tpl');
2898                 $xmsg = replace_macros($tpl, array('$conv' => $conv));
2899         }
2900
2901         logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
2902
2903         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
2904         //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false));
2905
2906         return(diaspora_transmit($owner,$contact,$slap,false));
2907
2908
2909 }
2910
2911 function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) {
2912
2913         $enabled = intval(get_config('system','diaspora_enabled'));
2914         if(! $enabled) {
2915                 return 200;
2916         }
2917
2918         $a = get_app();
2919         $logid = random_string(4);
2920         $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
2921         if(! $dest_url) {
2922                 logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
2923                 return 0;
2924         }
2925
2926         logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
2927
2928         if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) {
2929                 $return_code = 0;
2930         }
2931         else {
2932                 if (!intval(get_config('system','diaspora_test'))) {
2933                         post_url($dest_url . '/', $slap);
2934                         $return_code = $a->get_curl_code();
2935                 } else {
2936                         logger('diaspora_transmit: test_mode');
2937                         return 200;
2938                 }
2939         }
2940
2941         logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
2942
2943         if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
2944                 logger('diaspora_transmit: queue message');
2945
2946                 $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
2947                         intval($contact['id']),
2948                         dbesc(NETWORK_DIASPORA),
2949                         dbesc($slap),
2950                         intval($public_batch)
2951                 );
2952                 if(count($r)) {
2953                         logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
2954                 }
2955                 else {
2956                         // queue message for redelivery
2957                         add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
2958                 }
2959         }
2960
2961
2962         return(($return_code) ? $return_code : (-1));
2963 }
2964
2965