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
  10 function diaspora_dispatch_public($msg) {
  11
  12         $enabled = intval(get_config('system','diaspora_enabled'));
  13         if(! $enabled) {
  14                 logger('mod-diaspora: disabled');
  15                 return;
  16         }
  17
  18         $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
  19                 ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' )
  20                 AND `account_expired` = 0 AND `account_removed` = 0 ",
  21                 dbesc(NETWORK_DIASPORA),
  22                 dbesc($msg['author'])
  23         );
  24         if(count($r)) {
  25                 foreach($r as $rr) {
  26                         logger('diaspora_public: delivering to: ' . $rr['username']);
  27                         diaspora_dispatch($rr,$msg);
  28                 }
  29         }
  30         else
  31                 logger('diaspora_public: no subscribers');
  32 }
  33
  34
  35
  36 function diaspora_dispatch($importer,$msg,$attempt=1) {
  37
  38         $ret = 0;
  39
  40         $enabled = intval(get_config('system','diaspora_enabled'));
  41         if(! $enabled) {
  42                 logger('mod-diaspora: disabled');
  43                 return;
  44         }
  45
  46         // php doesn't like dashes in variable names
  47
  48         $msg['message'] = str_replace(
  49                         array('<activity_streams-photo>','</activity_streams-photo>'),
  50                         array('<asphoto>','</asphoto>'),
  51                         $msg['message']);
  52
  53
  54         $parsed_xml = parse_xml_string($msg['message'],false);
  55
  56         $xmlbase = $parsed_xml->post;
  57
  58         logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
  59
  60
  61         if($xmlbase->request) {
  62                 $ret = diaspora_request($importer,$xmlbase->request);
  63         }
  64         elseif($xmlbase->status_message) {
  65                 $ret = diaspora_post($importer,$xmlbase->status_message,$msg);
  66         }
  67         elseif($xmlbase->profile) {
  68                 $ret = diaspora_profile($importer,$xmlbase->profile,$msg);
  69         }
  70         elseif($xmlbase->comment) {
  71                 $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
  72         }
  73         elseif($xmlbase->like) {
  74                 $ret = diaspora_like($importer,$xmlbase->like,$msg);
  75         }
  76         elseif($xmlbase->asphoto) {
  77                 $ret = diaspora_asphoto($importer,$xmlbase->asphoto,$msg);
  78         }
  79         elseif($xmlbase->reshare) {
  80                 $ret = diaspora_reshare($importer,$xmlbase->reshare,$msg);
  81         }
  82         elseif($xmlbase->retraction) {
  83                 $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
  84         }
  85         elseif($xmlbase->signed_retraction) {
  86                 $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
  87         }
  88         elseif($xmlbase->relayable_retraction) {
  89                 $ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg);
  90         }
  91         elseif($xmlbase->photo) {
  92                 $ret = diaspora_photo($importer,$xmlbase->photo,$msg,$attempt);
  93         }
  94         elseif($xmlbase->conversation) {
  95                 $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
  96         }
  97         elseif($xmlbase->message) {
  98                 $ret = diaspora_message($importer,$xmlbase->message,$msg);
  99         }
 100         else {
 101                 logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
 102         }
 103         return $ret;
 104 }
 105
 106 function diaspora_handle_from_contact($contact_id) {
 107         $handle = False;
 108
 109         logger("diaspora_handle_from_contact: contact id is " . $contact_id, LOGGER_DEBUG);
 110
 111         $r = q("SELECT network, addr, self, url, nick FROM contact WHERE id = %d",
 112                intval($contact_id)
 113         );
 114         if($r) {
 115                 $contact = $r[0];
 116
 117                 logger("diaspora_handle_from_contact: contact 'self' = " . $contact['self'] . " 'url' = " . $contact['url'], LOGGER_DEBUG);
 118
 119                 if($contact['network'] === NETWORK_DIASPORA) {
 120                         $handle = $contact['addr'];
 121
 122 //                      logger("diaspora_handle_from_contact: contact id is a Diaspora person, handle = " . $handle, LOGGER_DEBUG);
 123                 }
 124                 elseif(($contact['network'] === NETWORK_DFRN) || ($contact['self'] == 1)) {
 125                         $baseurl_start = strpos($contact['url'],'://') + 3;
 126                         $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
 127                         $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
 128                         $handle = $contact['nick'] . '@' . $baseurl;
 129
 130 //                      logger("diaspora_handle_from_contact: contact id is a DFRN person, handle = " . $handle, LOGGER_DEBUG);
 131                 }
 132         }
 133
 134         return $handle;
 135 }
 136
 137 function diaspora_get_contact_by_handle($uid,$handle) {
 138         $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
 139                 dbesc(NETWORK_DIASPORA),
 140                 intval($uid),
 141                 dbesc($handle)
 142         );
 143         if($r && count($r))
 144                 return $r[0];
 145
 146         $handle_parts = explode("@", $handle);
 147         $nurl_sql = '%%://' . $handle_parts[1] . '%%/profile/' . $handle_parts[0];
 148         $r = q("SELECT * FROM contact WHERE network = '%s' AND uid = %d AND nurl LIKE '%s' LIMIT 1",
 149                dbesc(NETWORK_DFRN),
 150                intval($uid),
 151                dbesc($nurl_sql)
 152         );
 153         if($r && count($r))
 154                 return $r[0];
 155
 156         return false;
 157 }
 158
 159 function find_diaspora_person_by_handle($handle) {
 160
 161         $person = false;
 162         $update = false;
 163         $got_lock = false;
 164
 165         $endlessloop = 0;
 166         $maxloops = 10;
 167
 168         do {
 169                 $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
 170                         dbesc(NETWORK_DIASPORA),
 171                         dbesc($handle)
 172                 );
 173                 if(count($r)) {
 174                         $person = $r[0];
 175                         logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
 176
 177                         // update record occasionally so it doesn't get stale
 178                         $d = strtotime($person['updated'] . ' +00:00');
 179                         if($d < strtotime('now - 14 days'))
 180                                 $update = true;
 181                 }
 182
 183
 184                 // FETCHING PERSON INFORMATION FROM REMOTE SERVER
 185                 //
 186                 // If the person isn't in our 'fcontact' table, or if he/she is but
 187                 // his/her information hasn't been updated for more than 14 days, then
 188                 // we want to fetch the person's information from the remote server.
 189                 //
 190                 // Note that $person isn't changed by this block of code unless the
 191                 // person's information has been successfully fetched from the remote
 192                 // server. So if $person was 'false' to begin with (because he/she wasn't
 193                 // in the local cache), it'll stay false, and if $person held the local
 194                 // cache information to begin with, it'll keep that information. That way
 195                 // if there's a problem with the remote fetch, we can at least use our
 196                 // cached information--it's better than nothing.
 197
 198                 if((! $person) || ($update))  {
 199                         // Lock the function to prevent race conditions if multiple items
 200                         // come in at the same time from a person who doesn't exist in
 201                         // fcontact
 202                         //
 203                         // Don't loop forever. On the last loop, try to create the contact
 204                         // whether the function is locked or not. Maybe the locking thread
 205                         // has died or something. At any rate, a duplicate in 'fcontact'
 206                         // is a much smaller problem than a deadlocked thread
 207                         $got_lock = lock_function('find_diaspora_person_by_handle', false);
 208                         if(($endlessloop + 1) >= $maxloops)
 209                                 $got_lock = true;
 210
 211                         if($got_lock) {
 212                                 logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG);
 213                                 require_once('include/Scrape.php');
 214                                 $r = probe_url($handle, PROBE_DIASPORA);
 215
 216                                 // Note that Friendica contacts can return a "Diaspora person"
 217                                 // if Diaspora connectivity is enabled on their server
 218                                 if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
 219                                         add_fcontact($r,$update);
 220                                         $person = ($r);
 221                                 }
 222
 223                                 unlock_function('find_diaspora_person_by_handle');
 224                         }
 225                         else {
 226                                 logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG);
 227                                 if(! $person)
 228                                         block_on_function_lock('find_diaspora_person_by_handle');
 229                         }
 230                 }
 231         } while((! $person) && (! $got_lock) && (++$endlessloop < $maxloops));
 232         // We need to try again if the person wasn't in 'fcontact' but the function was locked.
 233         // The fact that the function was locked may mean that another process was creating the
 234         // person's record. It could also mean another process was creating or updating an unrelated
 235         // person.
 236         //
 237         // At any rate, we need to keep trying until we've either got the person or had a chance to
 238         // try to fetch his/her remote information. But we don't want to block on locking the
 239         // function, because if the other process is creating the record, then when we acquire the lock
 240         // we'll dive right into creating another, duplicate record. We DO want to at least wait
 241         // until the lock is released, so we don't flood the database with requests.
 242         //
 243         // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since
 244         // we do have some information for the person
 245
 246         return $person;
 247 }
 248
 249
 250 function get_diaspora_key($uri) {
 251         logger('Fetching diaspora key for: ' . $uri);
 252
 253         $r = find_diaspora_person_by_handle($uri);
 254         if($r)
 255                 return $r['pubkey'];
 256         return '';
 257 }
 258
 259
 260 function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
 261         $a = get_app();
 262
 263         logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
 264
 265
 266         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 267
 268 //      $b64_data = base64_encode($msg);
 269 //      $b64url_data = base64url_encode($b64_data);
 270
 271         $b64url_data = base64url_encode($msg);
 272
 273         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 274
 275         $type = 'application/xml';
 276         $encoding = 'base64url';
 277         $alg = 'RSA-SHA256';
 278
 279         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 280                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 281
 282         $signature = rsa_sign($signable_data,$prvkey);
 283         $sig = base64url_encode($signature);
 284
 285 $magic_env = <<< EOT
 286 <?xml version='1.0' encoding='UTF-8'?>
 287 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 288   <header>
 289     <author_id>$handle</author_id>
 290   </header>
 291   <me:env>
 292     <me:encoding>base64url</me:encoding>
 293     <me:alg>RSA-SHA256</me:alg>
 294     <me:data type="application/xml">$data</me:data>
 295     <me:sig>$sig</me:sig>
 296   </me:env>
 297 </diaspora>
 298 EOT;
 299
 300         logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 301         return $magic_env;
 302
 303 }
 304
 305
 306
 307
 308 function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
 309         $a = get_app();
 310
 311         if($public)
 312                 return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
 313
 314         logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
 315
 316         // without a public key nothing will work
 317
 318         if(! $pubkey) {
 319                 logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
 320                 return '';
 321         }
 322
 323         $inner_aes_key = random_string(32);
 324         $b_inner_aes_key = base64_encode($inner_aes_key);
 325         $inner_iv = random_string(16);
 326         $b_inner_iv = base64_encode($inner_iv);
 327
 328         $outer_aes_key = random_string(32);
 329         $b_outer_aes_key = base64_encode($outer_aes_key);
 330         $outer_iv = random_string(16);
 331         $b_outer_iv = base64_encode($outer_iv);
 332
 333         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 334
 335         $padded_data = pkcs5_pad($msg,16);
 336         $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
 337
 338         $b64_data = base64_encode($inner_encrypted);
 339
 340
 341         $b64url_data = base64url_encode($b64_data);
 342         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 343
 344         $type = 'application/xml';
 345         $encoding = 'base64url';
 346         $alg = 'RSA-SHA256';
 347
 348         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 349                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 350
 351         $signature = rsa_sign($signable_data,$prvkey);
 352         $sig = base64url_encode($signature);
 353
 354 $decrypted_header = <<< EOT
 355 <decrypted_header>
 356   <iv>$b_inner_iv</iv>
 357   <aes_key>$b_inner_aes_key</aes_key>
 358   <author_id>$handle</author_id>
 359 </decrypted_header>
 360 EOT;
 361
 362         $decrypted_header = pkcs5_pad($decrypted_header,16);
 363
 364         $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
 365
 366         $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
 367
 368         $encrypted_outer_key_bundle = '';
 369         openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
 370
 371         $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
 372
 373         logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
 374
 375         $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
 376                 'ciphertext' => base64_encode($ciphertext)));
 377         $cipher_json = base64_encode($encrypted_header_json_object);
 378
 379         $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
 380
 381 $magic_env = <<< EOT
 382 <?xml version='1.0' encoding='UTF-8'?>
 383 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 384   $encrypted_header
 385   <me:env>
 386     <me:encoding>base64url</me:encoding>
 387     <me:alg>RSA-SHA256</me:alg>
 388     <me:data type="application/xml">$data</me:data>
 389     <me:sig>$sig</me:sig>
 390   </me:env>
 391 </diaspora>
 392 EOT;
 393
 394         logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 395         return $magic_env;
 396
 397 }
 398
 399 /**
 400  *
 401  * diaspora_decode($importer,$xml)
 402  *   array $importer -> from user table
 403  *   string $xml -> urldecoded Diaspora salmon
 404  *
 405  * Returns array
 406  * 'message' -> decoded Diaspora XML message
 407  * 'author' -> author diaspora handle
 408  * 'key' -> author public key (converted to pkcs#8)
 409  *
 410  * Author and key are used elsewhere to save a lookup for verifying replies and likes
 411  */
 412
 413
 414 function diaspora_decode($importer,$xml) {
 415
 416         $public = false;
 417         $basedom = parse_xml_string($xml);
 418
 419         $children = $basedom->children('https://joindiaspora.com/protocol');
 420
 421         if($children->header) {
 422                 $public = true;
 423                 $author_link = str_replace('acct:','',$children->header->author_id);
 424         }
 425         else {
 426
 427                 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
 428
 429                 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
 430                 $ciphertext = base64_decode($encrypted_header->ciphertext);
 431
 432                 $outer_key_bundle = '';
 433                 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
 434
 435                 $j_outer_key_bundle = json_decode($outer_key_bundle);
 436
 437                 $outer_iv = base64_decode($j_outer_key_bundle->iv);
 438                 $outer_key = base64_decode($j_outer_key_bundle->key);
 439
 440                 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
 441
 442
 443                 $decrypted = pkcs5_unpad($decrypted);
 444
 445                 /**
 446                  * $decrypted now contains something like
 447                  *
 448                  *  <decrypted_header>
 449                  *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
 450                  *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 451
 452 ***** OBSOLETE
 453
 454                  *     <author>
 455                  *       <name>Ryan Hughes</name>
 456                  *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
 457                  *     </author>
 458
 459 ***** CURRENT
 460
 461                  *     <author_id>galaxor@diaspora.priateship.org</author_id>
 462
 463 ***** END DIFFS
 464
 465                  *  </decrypted_header>
 466                  */
 467
 468                 logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
 469                 $idom = parse_xml_string($decrypted,false);
 470
 471                 $inner_iv = base64_decode($idom->iv);
 472                 $inner_aes_key = base64_decode($idom->aes_key);
 473
 474                 $author_link = str_replace('acct:','',$idom->author_id);
 475
 476         }
 477
 478         $dom = $basedom->children(NAMESPACE_SALMON_ME);
 479
 480         // figure out where in the DOM tree our data is hiding
 481
 482         if($dom->provenance->data)
 483                 $base = $dom->provenance;
 484         elseif($dom->env->data)
 485                 $base = $dom->env;
 486         elseif($dom->data)
 487                 $base = $dom;
 488
 489         if(! $base) {
 490                 logger('mod-diaspora: unable to locate salmon data in xml ');
 491                 http_status_exit(400);
 492         }
 493
 494
 495         // Stash the signature away for now. We have to find their key or it won't be good for anything.
 496         $signature = base64url_decode($base->sig);
 497
 498         // unpack the  data
 499
 500         // strip whitespace so our data element will return to one big base64 blob
 501         $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
 502
 503
 504         // stash away some other stuff for later
 505
 506         $type = $base->data[0]->attributes()->type[0];
 507         $keyhash = $base->sig[0]->attributes()->keyhash[0];
 508         $encoding = $base->encoding;
 509         $alg = $base->alg;
 510
 511
 512         $signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 513
 514
 515         // decode the data
 516         $data = base64url_decode($data);
 517
 518
 519         if($public) {
 520                 $inner_decrypted = $data;
 521         }
 522         else {
 523
 524                 // Decode the encrypted blob
 525
 526                 $inner_encrypted = base64_decode($data);
 527                 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
 528                 $inner_decrypted = pkcs5_unpad($inner_decrypted);
 529         }
 530
 531         if(! $author_link) {
 532                 logger('mod-diaspora: Could not retrieve author URI.');
 533                 http_status_exit(400);
 534         }
 535
 536         // Once we have the author URI, go to the web and try to find their public key
 537         // (first this will look it up locally if it is in the fcontact cache)
 538         // This will also convert diaspora public key from pkcs#1 to pkcs#8
 539
 540         logger('mod-diaspora: Fetching key for ' . $author_link );
 541         $key = get_diaspora_key($author_link);
 542
 543         if(! $key) {
 544                 logger('mod-diaspora: Could not retrieve author key.');
 545                 http_status_exit(400);
 546         }
 547
 548         $verify = rsa_verify($signed_data,$signature,$key);
 549
 550         if(! $verify) {
 551                 logger('mod-diaspora: Message did not verify. Discarding.');
 552                 http_status_exit(400);
 553         }
 554
 555         logger('mod-diaspora: Message verified.');
 556
 557         return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
 558
 559 }
 560
 561
 562 function diaspora_request($importer,$xml) {
 563
 564         $a = get_app();
 565
 566         $sender_handle = unxmlify($xml->sender_handle);
 567         $recipient_handle = unxmlify($xml->recipient_handle);
 568
 569         if(! $sender_handle || ! $recipient_handle)
 570                 return;
 571
 572         $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 573
 574         if($contact) {
 575
 576                 // perhaps we were already sharing with this person. Now they're sharing with us.
 577                 // That makes us friends.
 578
 579                 if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 580                         q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 581                                 intval(CONTACT_IS_FRIEND),
 582                                 intval($contact['id']),
 583                                 intval($importer['uid'])
 584                         );
 585                 }
 586                 // send notification
 587
 588                 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
 589                         intval($importer['uid'])
 590                 );
 591
 592                 if((count($r)) && (!$r[0]['hide-friends']) && (!$contact['hidden']) && intval(get_pconfig($importer['uid'],'system','post_newfriend'))) {
 593                         require_once('include/items.php');
 594
 595                         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 596                                 intval($importer['uid'])
 597                         );
 598
 599                         // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
 600
 601                         if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
 602
 603                                 $arr = array();
 604                                 $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']);
 605                                 $arr['uid'] = $importer['uid'];
 606                                 $arr['contact-id'] = $self[0]['id'];
 607                                 $arr['wall'] = 1;
 608                                 $arr['type'] = 'wall';
 609                                 $arr['gravity'] = 0;
 610                                 $arr['origin'] = 1;
 611                                 $arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
 612                                 $arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
 613                                 $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
 614                                 $arr['verb'] = ACTIVITY_FRIEND;
 615                                 $arr['object-type'] = ACTIVITY_OBJ_PERSON;
 616
 617                                 $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]';
 618                                 $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
 619                                 $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';
 620                                 $arr['body'] =  sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
 621
 622                                 $arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
 623                                         . '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
 624                                 $arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
 625                                 $arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
 626                                 $arr['object'] .= '</link></object>' . "\n";
 627                                 $arr['last-child'] = 1;
 628
 629                                 $arr['allow_cid'] = $user[0]['allow_cid'];
 630                                 $arr['allow_gid'] = $user[0]['allow_gid'];
 631                                 $arr['deny_cid']  = $user[0]['deny_cid'];
 632                                 $arr['deny_gid']  = $user[0]['deny_gid'];
 633
 634                                 $i = item_store($arr);
 635                                 if($i)
 636                                 proc_run('php',"include/notifier.php","activity","$i");
 637
 638                         }
 639
 640                 }
 641
 642                 return;
 643         }
 644
 645         $ret = find_diaspora_person_by_handle($sender_handle);
 646
 647
 648         if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
 649                 logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
 650                 return;
 651         }
 652
 653         $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public');
 654
 655
 656
 657         $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
 658                 VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
 659                 intval($importer['uid']),
 660                 dbesc($ret['network']),
 661                 dbesc($ret['addr']),
 662                 datetime_convert(),
 663                 dbesc($ret['url']),
 664                 dbesc(normalise_link($ret['url'])),
 665                 dbesc($batch),
 666                 dbesc($ret['name']),
 667                 dbesc($ret['nick']),
 668                 dbesc($ret['photo']),
 669                 dbesc($ret['pubkey']),
 670                 dbesc($ret['notify']),
 671                 dbesc($ret['poll']),
 672                 1,
 673                 2
 674         );
 675
 676         // find the contact record we just created
 677
 678         $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 679
 680         if(! $contact_record) {
 681                 logger('diaspora_request: unable to locate newly created contact record.');
 682                 return;
 683         }
 684
 685         $g = q("select def_gid from user where uid = %d limit 1",
 686                 intval($importer['uid'])
 687         );
 688         if($g && intval($g[0]['def_gid'])) {
 689                 require_once('include/group.php');
 690                 group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']);
 691         }
 692
 693         if($importer['page-flags'] == PAGE_NORMAL) {
 694
 695                 $hash = random_string() . (string) time();   // Generate a confirm_key
 696
 697                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
 698                         VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
 699                         intval($importer['uid']),
 700                         intval($contact_record['id']),
 701                         0,
 702                         0,
 703                         dbesc( t('Sharing notification from Diaspora network')),
 704                         dbesc($hash),
 705                         dbesc(datetime_convert())
 706                 );
 707         }
 708         else {
 709
 710                 // automatic friend approval
 711
 712                 require_once('include/Photo.php');
 713
 714                 $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']);
 715
 716                 // technically they are sharing with us (CONTACT_IS_SHARING),
 717                 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
 718                 // we are going to change the relationship and make them a follower.
 719
 720                 if($importer['page-flags'] == PAGE_FREELOVE)
 721                         $new_relation = CONTACT_IS_FRIEND;
 722                 else
 723                         $new_relation = CONTACT_IS_FOLLOWER;
 724
 725                 $r = q("UPDATE `contact` SET
 726                         `photo` = '%s',
 727                         `thumb` = '%s',
 728                         `micro` = '%s',
 729                         `rel` = %d,
 730                         `name-date` = '%s',
 731                         `uri-date` = '%s',
 732                         `avatar-date` = '%s',
 733                         `blocked` = 0,
 734                         `pending` = 0
 735                         WHERE `id` = %d
 736                         ",
 737                         dbesc($photos[0]),
 738                         dbesc($photos[1]),
 739                         dbesc($photos[2]),
 740                         intval($new_relation),
 741                         dbesc(datetime_convert()),
 742                         dbesc(datetime_convert()),
 743                         dbesc(datetime_convert()),
 744                         intval($contact_record['id'])
 745                 );
 746
 747                 $u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
 748                 if($u)
 749                         $ret = diaspora_share($u[0],$contact_record);
 750         }
 751
 752         return;
 753 }
 754
 755 function diaspora_post_allow($importer,$contact) {
 756
 757         // perhaps we were already sharing with this person. Now they're sharing with us.
 758         // That makes us friends.
 759         // Normally this should have handled by getting a request - but this could get lost
 760         if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 761                 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 762                         intval(CONTACT_IS_FRIEND),
 763                         intval($contact['id']),
 764                         intval($importer['uid'])
 765                 );
 766                 $contact['rel'] = CONTACT_IS_FRIEND;
 767                 logger('diaspora_post_allow: defining user '.$contact["nick"].' as friend');
 768         }
 769
 770         if(($contact['blocked']) || ($contact['readonly']) || ($contact['archive']))
 771                 return false;
 772         if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
 773                 return true;
 774         if($contact['rel'] == CONTACT_IS_FOLLOWER)
 775                 if($importer['page-flags'] == PAGE_COMMUNITY)
 776                         return true;
 777         return false;
 778 }
 779
 780
 781 function diaspora_post($importer,$xml,$msg) {
 782
 783         $a = get_app();
 784         $guid = notags(unxmlify($xml->guid));
 785         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 786
 787         if($diaspora_handle != $msg['author']) {
 788                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
 789                 return 202;
 790         }
 791
 792         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
 793         if(! $contact)
 794                 return;
 795
 796         if(! diaspora_post_allow($importer,$contact)) {
 797                 logger('diaspora_post: Ignoring this author.');
 798                 return 202;
 799         }
 800
 801         $message_id = $diaspora_handle . ':' . $guid;
 802         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 803                 intval($importer['uid']),
 804                 dbesc($message_id),
 805                 dbesc($guid)
 806         );
 807         if(count($r)) {
 808                 logger('diaspora_post: message exists: ' . $guid);
 809                 return;
 810         }
 811
 812         // allocate a guid on our system - we aren't fixing any collisions.
 813         // we're ignoring them
 814
 815         $g = q("select * from guid where guid = '%s' limit 1",
 816                 dbesc($guid)
 817         );
 818         if(! count($g)) {
 819                 q("insert into guid ( guid ) values ( '%s' )",
 820                         dbesc($guid)
 821                 );
 822         }
 823
 824         $created = unxmlify($xml->created_at);
 825         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
 826
 827         $body = diaspora2bb($xml->raw_message);
 828
 829         // Add OEmbed and other information to the body
 830         $body = add_page_info_to_body($body, false, true);
 831
 832         $datarray = array();
 833
 834         $str_tags = '';
 835
 836         $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
 837         if($cnt) {
 838                 foreach($matches as $mtch) {
 839                         if(strlen($str_tags))
 840                                 $str_tags .= ',';
 841                         $str_tags .= '@[url=' . $mtch[1] . '[/url]';
 842                 }
 843         }
 844
 845         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
 846
 847         $datarray['uid'] = $importer['uid'];
 848         $datarray['contact-id'] = $contact['id'];
 849         $datarray['wall'] = 0;
 850         $datarray['network'] = NETWORK_DIASPORA;
 851         $datarray['verb'] = ACTIVITY_POST;
 852         $datarray['guid'] = $guid;
 853         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 854         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 855         $datarray['private'] = $private;
 856         $datarray['parent'] = 0;
 857         $datarray['plink'] = $plink;
 858         $datarray['owner-name'] = $contact['name'];
 859         $datarray['owner-link'] = $contact['url'];
 860         //$datarray['owner-avatar'] = $contact['thumb'];
 861         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
 862         $datarray['author-name'] = $contact['name'];
 863         $datarray['author-link'] = $contact['url'];
 864         $datarray['author-avatar'] = $contact['thumb'];
 865         $datarray['body'] = $body;
 866         $datarray['tag'] = $str_tags;
 867         $datarray['app']  = 'Diaspora';
 868
 869         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
 870
 871         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 872
 873         DiasporaFetchGuid($datarray);
 874         $message_id = item_store($datarray);
 875
 876         return;
 877
 878 }
 879
 880 function DiasporaFetchGuid($item) {
 881         preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
 882                 function ($match) use ($item){
 883                         return(DiasporaFetchGuidSub($match, $item));
 884                 },$item["body"]);
 885 }
 886
 887 function DiasporaFetchGuidSub($match, $item) {
 888         $a = get_app();
 889
 890         $author = parse_url($item["author-link"]);
 891         $authorserver = $author["scheme"]."://".$author["host"];
 892
 893         $owner = parse_url($item["owner-link"]);
 894         $ownerserver = $owner["scheme"]."://".$owner["host"];
 895
 896         if (!diaspora_store_by_guid($match[1], $authorserver))
 897                 diaspora_store_by_guid($match[1], $ownerserver);
 898 }
 899
 900 function diaspora_store_by_guid($guid, $server) {
 901         require_once("include/Contact.php");
 902
 903         logger("fetching item ".$guid." from ".$server, LOGGER_DEBUG);
 904
 905         $item = diaspora_fetch_message($guid, $server);
 906
 907         if (!$item)
 908                 return false;
 909
 910         $body = $item["body"];
 911         $str_tags = $item["tag"];
 912         $app = $item["app"];
 913         $created = $item["created"];
 914         $author = $item["author"];
 915         $guid = $item["guid"];
 916         $private = $item["private"];
 917
 918         $message_id = $author.':'.$guid;
 919         $r = q("SELECT `id` FROM `item` WHERE `uid` = 0 AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 920                 dbesc($message_id),
 921                 dbesc($guid)
 922         );
 923         if(count($r))
 924                 return $r[0]["id"];
 925
 926         $person = find_diaspora_person_by_handle($author);
 927
 928         $datarray = array();
 929         $datarray['uid'] = 0;
 930         $datarray['contact-id'] = get_contact($person['url'], 0);
 931         $datarray['wall'] = 0;
 932         $datarray['network']  = NETWORK_DIASPORA;
 933         $datarray['guid'] = $guid;
 934         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 935         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 936         $datarray['private'] = $private;
 937         $datarray['parent'] = 0;
 938         $datarray['plink'] = 'https://'.substr($author,strpos($author,'@')+1).'/posts/'.$guid;
 939         $datarray['author-name'] = $person['name'];
 940         $datarray['author-link'] = $person['url'];
 941         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
 942         $datarray['owner-name'] = $datarray['author-name'];
 943         $datarray['owner-link'] = $datarray['author-link'];
 944         $datarray['owner-avatar'] = $datarray['author-avatar'];
 945         $datarray['body'] = $body;
 946         $datarray['tag'] = $str_tags;
 947         $datarray['app']  = $app;
 948         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 949
 950         DiasporaFetchGuid($datarray);
 951         $message_id = item_store($datarray);
 952
 953         // To-Do:
 954         // Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
 955
 956         return $message_id;
 957 }
 958
 959 function diaspora_fetch_message($guid, $server, $level = 0) {
 960
 961         if ($level > 5)
 962                 return false;
 963
 964         $a = get_app();
 965
 966         // This will not work if the server is not a Diaspora server
 967         $source_url = $server.'/p/'.$guid.'.xml';
 968         $x = fetch_url($source_url);
 969         if(!$x)
 970                 return false;
 971
 972         $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
 973         $source_xml = parse_xml_string($x,false);
 974
 975         $item = array();
 976         $item["app"] = 'Diaspora';
 977         $item["guid"] = $guid;
 978         $body = "";
 979
 980         if ($source_xml->post->status_message->created_at)
 981                 $item["created"] = unxmlify($source_xml->post->status_message->created_at);
 982
 983         if ($source_xml->post->status_message->provider_display_name)
 984                 $item["app"] = unxmlify($source_xml->post->status_message->provider_display_name);
 985
 986         if ($source_xml->post->status_message->diaspora_handle)
 987                 $item["author"] = unxmlify($source_xml->post->status_message->diaspora_handle);
 988
 989         if ($source_xml->post->status_message->guid)
 990                 $item["guid"] = unxmlify($source_xml->post->status_message->guid);
 991
 992         $item["private"] = (unxmlify($source_xml->post->status_message->public) == 'false');
 993
 994         if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
 995                 $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
 996                 $body = scale_external_images($body,false);
 997         } elseif($source_xml->post->asphoto->image_url) {
 998                 $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
 999                 $body = scale_external_images($body);
1000         } elseif($source_xml->post->status_message) {
1001                 $body = diaspora2bb($source_xml->post->status_message->raw_message);
1002
1003                 // Checking for embedded pictures
1004                 if($source_xml->post->status_message->photo->remote_photo_path AND
1005                         $source_xml->post->status_message->photo->remote_photo_name) {
1006
1007                         $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path));
1008                         $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name));
1009
1010                         $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body;
1011
1012                         logger('embedded picture link found: '.$body, LOGGER_DEBUG);
1013                 }
1014
1015                 $body = scale_external_images($body);
1016
1017                 // Add OEmbed and other information to the body
1018                 $body = add_page_info_to_body($body, false, true);
1019         } elseif($source_xml->post->reshare) {
1020                 // Reshare of a reshare
1021                 return diaspora_fetch_message($source_xml->post->reshare->root_guid, $server, ++$level);
1022         } else {
1023                 // Maybe it is a reshare of a photo that will be delivered at a later time (testing)
1024                 logger('no content found: '.print_r($source_xml,true));
1025                 $body = "";
1026         }
1027
1028         if ($body == "")
1029                 return false;
1030
1031         $item["tag"] = '';
1032         $item["body"] = $body;
1033
1034         return $item;
1035 }
1036
1037 function diaspora_reshare($importer,$xml,$msg) {
1038
1039         logger('diaspora_reshare: init: ' . print_r($xml,true));
1040
1041         $a = get_app();
1042         $guid = notags(unxmlify($xml->guid));
1043         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1044
1045
1046         if($diaspora_handle != $msg['author']) {
1047                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1048                 return 202;
1049         }
1050
1051         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1052         if(! $contact)
1053                 return;
1054
1055         if(! diaspora_post_allow($importer,$contact)) {
1056                 logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
1057                 return 202;
1058         }
1059
1060         $message_id = $diaspora_handle . ':' . $guid;
1061         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1062                 intval($importer['uid']),
1063                 dbesc($message_id),
1064                 dbesc($guid)
1065         );
1066         if(count($r)) {
1067                 logger('diaspora_reshare: message exists: ' . $guid);
1068                 return;
1069         }
1070
1071         $orig_author = notags(unxmlify($xml->root_diaspora_id));
1072         $orig_guid = notags(unxmlify($xml->root_guid));
1073
1074         $create_original_post = false;
1075
1076         // Do we already have this item?
1077         $r = q("SELECT `body`, `tag`, `app`, `author-link`, `plink` FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1078                 dbesc($orig_guid),
1079                 dbesc(NETWORK_DIASPORA)
1080         );
1081         if(count($r)) {
1082                 logger('reshared message '.orig_guid." reshared by ".$guid.' already exists on system: '.$orig_url);
1083
1084                 // Maybe it is already a reshared item?
1085                 // Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
1086                 require_once('include/api.php');
1087                 if (api_share_as_retweet($r[0]))
1088                         $r = array();
1089                 else
1090                         $orig_url = $a->get_baseurl().'/display/'.$orig_guid;
1091         }
1092
1093         if (!count($r)) {
1094                 $body = "";
1095                 $str_tags = "";
1096                 $app = "";
1097
1098                 $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1099
1100                 $server = 'https://'.substr($orig_author,strpos($orig_author,'@')+1);
1101                 logger('1st try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1102                 $item = diaspora_fetch_message($orig_guid, $server);
1103
1104                 if (!$item) {
1105                         $server = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1106                         logger('2nd try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1107                         $item = diaspora_fetch_message($orig_guid, $server);
1108                 }
1109                 if (!$item) {
1110                         $server = 'http://'.substr($orig_author,strpos($orig_author,'@')+1);
1111                         logger('3rd try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1112                         $item = diaspora_fetch_message($orig_guid, $server);
1113                 }
1114                 if (!$item) {
1115                         $server = 'http://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1116                         logger('4th try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1117                         $item = diaspora_fetch_message($orig_guid, $server);
1118                 }
1119
1120                 if ($item) {
1121                         $body = $item["body"];
1122                         $str_tags = $item["tag"];
1123                         $app = $item["app"];
1124                         $orig_created = $item["created"];
1125                         $orig_author = $item["author"];
1126                         $orig_guid = $item["guid"];
1127                         $create_original_post = ($body != "");
1128                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1129                 }
1130         }
1131
1132         $person = find_diaspora_person_by_handle($orig_author);
1133
1134         // allocate a guid on our system - we aren't fixing any collisions.
1135         // we're ignoring them
1136
1137         $g = q("select * from guid where guid = '%s' limit 1",
1138                 dbesc($guid)
1139         );
1140         if(! count($g)) {
1141                 q("insert into guid ( guid ) values ( '%s' )",
1142                         dbesc($guid)
1143                 );
1144         }
1145
1146         $created = unxmlify($xml->created_at);
1147         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1148
1149         $datarray = array();
1150
1151         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1152
1153         $datarray['uid'] = $importer['uid'];
1154         $datarray['contact-id'] = $contact['id'];
1155         $datarray['wall'] = 0;
1156         $datarray['network']  = NETWORK_DIASPORA;
1157         $datarray['guid'] = $guid;
1158         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1159         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1160         $datarray['private'] = $private;
1161         $datarray['parent'] = 0;
1162         $datarray['plink'] = $plink;
1163         $datarray['owner-name'] = $contact['name'];
1164         $datarray['owner-link'] = $contact['url'];
1165         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1166         if (!intval(get_config('system','wall-to-wall_share'))) {
1167                 $prefix = "[share author='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$person['name']).
1168                                 "' profile='".$person['url'].
1169                                 "' avatar='".((x($person,'thumb')) ? $person['thumb'] : $person['photo']).
1170                                 "' guid='".$orig_guid.
1171                                 "' posted='".$orig_created.
1172                                 "' link='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$orig_url)."']";
1173                 $datarray['author-name'] = $contact['name'];
1174                 $datarray['author-link'] = $contact['url'];
1175                 $datarray['author-avatar'] = $contact['thumb'];
1176                 $datarray['body'] = $prefix.$body."[/share]";
1177         } else {
1178                 // Let reshared messages look like wall-to-wall posts
1179                 $datarray['author-name'] = $person['name'];
1180                 $datarray['author-link'] = $person['url'];
1181                 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1182                 $datarray['body'] = $body;
1183         }
1184
1185         $datarray['tag'] = $str_tags;
1186         $datarray['app']  = $app;
1187
1188         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing)
1189         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
1190
1191         // Store the original item of a reshare
1192         if ($create_original_post) {
1193                 require_once("include/Contact.php");
1194
1195                 $datarray2 = $datarray;
1196
1197                 $datarray2['uid'] = 0;
1198                 $datarray2['contact-id'] = get_contact($person['url'], 0);
1199                 $datarray2['guid'] = $orig_guid;
1200                 $datarray2['uri'] = $datarray2['parent-uri'] = $orig_author.':'.$orig_guid;
1201                 $datarray2['changed'] = $datarray2['created'] = $datarray2['edited'] = datetime_convert('UTC','UTC',$orig_created);
1202                 $datarray2['plink'] = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1203
1204                 $datarray2['author-name'] = $person['name'];
1205                 $datarray2['author-link'] = $person['url'];
1206                 $datarray2['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1207                 $datarray2['owner-name'] = $datarray2['author-name'];
1208                 $datarray2['owner-link'] = $datarray2['author-link'];
1209                 $datarray2['owner-avatar'] = $datarray2['author-avatar'];
1210                 $datarray2['body'] = $body;
1211
1212                 DiasporaFetchGuid($datarray2);
1213                 $message_id = item_store($datarray2);
1214
1215                 logger("Store original item ".$orig_guid." under message id ".$message_id);
1216         }
1217
1218         DiasporaFetchGuid($datarray);
1219         $message_id = item_store($datarray);
1220
1221         return;
1222
1223 }
1224
1225
1226 function diaspora_asphoto($importer,$xml,$msg) {
1227         logger('diaspora_asphoto called');
1228
1229         $a = get_app();
1230         $guid = notags(unxmlify($xml->guid));
1231         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1232
1233         if($diaspora_handle != $msg['author']) {
1234                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1235                 return 202;
1236         }
1237
1238         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1239         if(! $contact)
1240                 return;
1241
1242         if(! diaspora_post_allow($importer,$contact)) {
1243                 logger('diaspora_asphoto: Ignoring this author.');
1244                 return 202;
1245         }
1246
1247         $message_id = $diaspora_handle . ':' . $guid;
1248         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1249                 intval($importer['uid']),
1250                 dbesc($message_id),
1251                 dbesc($guid)
1252         );
1253         if(count($r)) {
1254                 logger('diaspora_asphoto: message exists: ' . $guid);
1255                 return;
1256         }
1257
1258         // allocate a guid on our system - we aren't fixing any collisions.
1259         // we're ignoring them
1260
1261         $g = q("select * from guid where guid = '%s' limit 1",
1262                 dbesc($guid)
1263         );
1264         if(! count($g)) {
1265                 q("insert into guid ( guid ) values ( '%s' )",
1266                         dbesc($guid)
1267                 );
1268         }
1269
1270         $created = unxmlify($xml->created_at);
1271         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1272
1273         if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
1274                 $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
1275                 $body = scale_external_images($body,false);
1276         }
1277         elseif($xml->image_url) {
1278                 $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
1279                 $body = scale_external_images($body);
1280         }
1281         else {
1282                 logger('diaspora_asphoto: no photo url found.');
1283                 return;
1284         }
1285
1286         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1287
1288         $datarray = array();
1289
1290         $datarray['uid'] = $importer['uid'];
1291         $datarray['contact-id'] = $contact['id'];
1292         $datarray['wall'] = 0;
1293         $datarray['network']  = NETWORK_DIASPORA;
1294         $datarray['guid'] = $guid;
1295         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1296         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1297         $datarray['private'] = $private;
1298         $datarray['parent'] = 0;
1299         $datarray['plink'] = $plink;
1300         $datarray['owner-name'] = $contact['name'];
1301         $datarray['owner-link'] = $contact['url'];
1302         //$datarray['owner-avatar'] = $contact['thumb'];
1303         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1304         $datarray['author-name'] = $contact['name'];
1305         $datarray['author-link'] = $contact['url'];
1306         $datarray['author-avatar'] = $contact['thumb'];
1307         $datarray['body'] = $body;
1308
1309         $datarray['app']  = 'Diaspora/Cubbi.es';
1310
1311         DiasporaFetchGuid($datarray);
1312         $message_id = item_store($datarray);
1313
1314         //if($message_id) {
1315         //      q("update item set plink = '%s' where id = %d",
1316         //              dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1317         //              intval($message_id)
1318         //      );
1319         //}
1320
1321         return;
1322
1323 }
1324
1325
1326
1327
1328
1329
1330 function diaspora_comment($importer,$xml,$msg) {
1331
1332         $a = get_app();
1333         $guid = notags(unxmlify($xml->guid));
1334         $parent_guid = notags(unxmlify($xml->parent_guid));
1335         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1336         $target_type = notags(unxmlify($xml->target_type));
1337         $text = unxmlify($xml->text);
1338         $author_signature = notags(unxmlify($xml->author_signature));
1339
1340         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1341
1342         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1343         if(! $contact) {
1344                 logger('diaspora_comment: cannot find contact: ' . $msg['author']);
1345                 return;
1346         }
1347
1348         if(! diaspora_post_allow($importer,$contact)) {
1349                 logger('diaspora_comment: Ignoring this author.');
1350                 return 202;
1351         }
1352
1353         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1354                 intval($importer['uid']),
1355                 dbesc($guid)
1356         );
1357         if(count($r)) {
1358                 logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
1359                 return;
1360         }
1361
1362         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1363                 intval($importer['uid']),
1364                 dbesc($parent_guid)
1365         );
1366         if(! count($r)) {
1367                 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
1368                 return;
1369         }
1370         $parent_item = $r[0];
1371
1372
1373         /* How Diaspora performs comment signature checking:
1374
1375            - If an item has been sent by the comment author to the top-level post owner to relay on
1376              to the rest of the contacts on the top-level post, the top-level post owner should check
1377              the author_signature, then create a parent_author_signature before relaying the comment on
1378            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1379              check only the parent_author_signature. Basically, they trust that the top-level post
1380              owner has already verified the authenticity of anything he/she sends out
1381            - In either case, the signature that get checked is the signature created by the person
1382              who sent the salmon
1383         */
1384
1385         $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
1386         $key = $msg['key'];
1387
1388         if($parent_author_signature) {
1389                 // If a parent_author_signature exists, then we've received the comment
1390                 // relayed from the top-level post owner. There's no need to check the
1391                 // author_signature if the parent_author_signature is valid
1392
1393                 $parent_author_signature = base64_decode($parent_author_signature);
1394
1395                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1396                         logger('diaspora_comment: top-level owner verification failed.');
1397                         return;
1398                 }
1399         }
1400         else {
1401                 // If there's no parent_author_signature, then we've received the comment
1402                 // from the comment creator. In that case, the person is commenting on
1403                 // our post, so he/she must be a contact of ours and his/her public key
1404                 // should be in $msg['key']
1405
1406                 $author_signature = base64_decode($author_signature);
1407
1408                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1409                         logger('diaspora_comment: comment author verification failed.');
1410                         return;
1411                 }
1412         }
1413
1414         // Phew! Everything checks out. Now create an item.
1415
1416         // Find the original comment author information.
1417         // We need this to make sure we display the comment author
1418         // information (name and avatar) correctly.
1419         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1420                 $person = $contact;
1421         else {
1422                 $person = find_diaspora_person_by_handle($diaspora_handle);
1423
1424                 if(! is_array($person)) {
1425                         logger('diaspora_comment: unable to find author details');
1426                         return;
1427                 }
1428         }
1429
1430         $body = diaspora2bb($text);
1431         $message_id = $diaspora_handle . ':' . $guid;
1432
1433         $datarray = array();
1434
1435         $datarray['uid'] = $importer['uid'];
1436         $datarray['contact-id'] = $contact['id'];
1437         $datarray['type'] = 'remote-comment';
1438         $datarray['wall'] = $parent_item['wall'];
1439         $datarray['network']  = NETWORK_DIASPORA;
1440         $datarray['verb'] = ACTIVITY_POST;
1441         $datarray['gravity'] = GRAVITY_COMMENT;
1442         $datarray['guid'] = $guid;
1443         $datarray['uri'] = $message_id;
1444         $datarray['parent-uri'] = $parent_item['uri'];
1445
1446         // No timestamps for comments? OK, we'll the use current time.
1447         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
1448         $datarray['private'] = $parent_item['private'];
1449
1450         $datarray['owner-name'] = $parent_item['owner-name'];
1451         $datarray['owner-link'] = $parent_item['owner-link'];
1452         $datarray['owner-avatar'] = $parent_item['owner-avatar'];
1453
1454         $datarray['author-name'] = $person['name'];
1455         $datarray['author-link'] = $person['url'];
1456         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1457         $datarray['body'] = $body;
1458
1459         // We can't be certain what the original app is if the message is relayed.
1460         if(($parent_item['origin']) && (! $parent_author_signature))
1461                 $datarray['app']  = 'Diaspora';
1462
1463         DiasporaFetchGuid($datarray);
1464         $message_id = item_store($datarray);
1465
1466         //if($message_id) {
1467                 //q("update item set plink = '%s' where id = %d",
1468                 //      //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1469                 //      dbesc($a->get_baseurl().'/display/'.$datarray['guid']),
1470                 //      intval($message_id)
1471                 //);
1472         //}
1473
1474         if(($parent_item['origin']) && (! $parent_author_signature)) {
1475                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1476                         intval($message_id),
1477                         dbesc($signed_data),
1478                         dbesc(base64_encode($author_signature)),
1479                         dbesc($diaspora_handle)
1480                 );
1481
1482                 // if the message isn't already being relayed, notify others
1483                 // the existence of parent_author_signature means the parent_author or owner
1484                 // is already relaying.
1485
1486                 proc_run('php','include/notifier.php','comment-import',$message_id);
1487         }
1488
1489         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
1490                 dbesc($parent_item['uri']),
1491                 intval($importer['uid'])
1492         );
1493
1494         if(count($myconv)) {
1495                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
1496
1497                 foreach($myconv as $conv) {
1498
1499                         // now if we find a match, it means we're in this conversation
1500
1501                         if(! link_compare($conv['author-link'],$importer_url))
1502                                 continue;
1503
1504                         require_once('include/enotify.php');
1505
1506                         $conv_parent = $conv['parent'];
1507
1508                         notification(array(
1509                                 'type'         => NOTIFY_COMMENT,
1510                                 'notify_flags' => $importer['notify-flags'],
1511                                 'language'     => $importer['language'],
1512                                 'to_name'      => $importer['username'],
1513                                 'to_email'     => $importer['email'],
1514                                 'uid'          => $importer['uid'],
1515                                 'item'         => $datarray,
1516                                 'link'             => $a->get_baseurl().'/display/'.urlencode($datarray['guid']),
1517                                 'source_name'  => $datarray['author-name'],
1518                                 'source_link'  => $datarray['author-link'],
1519                                 'source_photo' => $datarray['author-avatar'],
1520                                 'verb'         => ACTIVITY_POST,
1521                                 'otype'        => 'item',
1522                                 'parent'       => $conv_parent,
1523                                 'parent_uri'   => $parent_uri
1524                         ));
1525
1526                         // only send one notification
1527                         break;
1528                 }
1529         }
1530         return;
1531 }
1532
1533
1534
1535
1536 function diaspora_conversation($importer,$xml,$msg) {
1537
1538         $a = get_app();
1539
1540         $guid = notags(unxmlify($xml->guid));
1541         $subject = notags(unxmlify($xml->subject));
1542         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1543         $participant_handles = notags(unxmlify($xml->participant_handles));
1544         $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1545
1546         $parent_uri = $diaspora_handle . ':' . $guid;
1547
1548         $messages = $xml->message;
1549
1550         if(! count($messages)) {
1551                 logger('diaspora_conversation: empty conversation');
1552                 return;
1553         }
1554
1555         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1556         if(! $contact) {
1557                 logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
1558                 return;
1559         }
1560
1561         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1562                 logger('diaspora_conversation: Ignoring this author.');
1563                 return 202;
1564         }
1565
1566         $conversation = null;
1567
1568         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1569                 intval($importer['uid']),
1570                 dbesc($guid)
1571         );
1572         if(count($c))
1573                 $conversation = $c[0];
1574         else {
1575                 $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
1576                         intval($importer['uid']),
1577                         dbesc($guid),
1578                         dbesc($diaspora_handle),
1579                         dbesc(datetime_convert('UTC','UTC',$created_at)),
1580                         dbesc(datetime_convert()),
1581                         dbesc($subject),
1582                         dbesc($participant_handles)
1583                 );
1584                 if($r)
1585                         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1586                 intval($importer['uid']),
1587             dbesc($guid)
1588         );
1589             if(count($c))
1590             $conversation = $c[0];
1591         }
1592         if(! $conversation) {
1593                 logger('diaspora_conversation: unable to create conversation.');
1594                 return;
1595         }
1596
1597         foreach($messages as $mesg) {
1598
1599                 $reply = 0;
1600
1601                 $msg_guid = notags(unxmlify($mesg->guid));
1602                 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1603                 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1604                 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1605                 $msg_text = unxmlify($mesg->text);
1606                 $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
1607                 $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
1608                 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1609                 if($msg_conversation_guid != $guid) {
1610                         logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
1611                         continue;
1612                 }
1613
1614                 $body = diaspora2bb($msg_text);
1615                 $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1616
1617                 $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1618
1619                 $author_signature = base64_decode($msg_author_signature);
1620
1621                 if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
1622                         $person = $contact;
1623                         $key = $msg['key'];
1624                 }
1625                 else {
1626                         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1627
1628                         if(is_array($person) && x($person,'pubkey'))
1629                                 $key = $person['pubkey'];
1630                         else {
1631                                 logger('diaspora_conversation: unable to find author details');
1632                                 continue;
1633                         }
1634                 }
1635
1636                 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1637                         logger('diaspora_conversation: verification failed.');
1638                         continue;
1639                 }
1640
1641                 if($msg_parent_author_signature) {
1642                         $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1643
1644                         $parent_author_signature = base64_decode($msg_parent_author_signature);
1645
1646                         $key = $msg['key'];
1647
1648                         if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
1649                                 logger('diaspora_conversation: owner verification failed.');
1650                                 continue;
1651                         }
1652                 }
1653
1654                 $r = q("select id from mail where `uri` = '%s' limit 1",
1655                         dbesc($message_id)
1656                 );
1657                 if(count($r)) {
1658                         logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
1659                         continue;
1660                 }
1661
1662                 q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1663                         intval($importer['uid']),
1664                         dbesc($msg_guid),
1665                         intval($conversation['id']),
1666                         dbesc($person['name']),
1667                         dbesc($person['photo']),
1668                         dbesc($person['url']),
1669                         intval($contact['id']),
1670                         dbesc($subject),
1671                         dbesc($body),
1672                         0,
1673                         0,
1674                         dbesc($message_id),
1675                         dbesc($parent_uri),
1676                         dbesc($msg_created_at)
1677                 );
1678
1679                 q("update conv set updated = '%s' where id = %d",
1680                         dbesc(datetime_convert()),
1681                         intval($conversation['id'])
1682                 );
1683
1684                 require_once('include/enotify.php');
1685                 notification(array(
1686                         'type' => NOTIFY_MAIL,
1687                         'notify_flags' => $importer['notify-flags'],
1688                         'language' => $importer['language'],
1689                         'to_name' => $importer['username'],
1690                         'to_email' => $importer['email'],
1691                         'uid' =>$importer['importer_uid'],
1692                         'item' => array('subject' => $subject, 'body' => $body),
1693                         'source_name' => $person['name'],
1694                         'source_link' => $person['url'],
1695                         'source_photo' => $person['thumb'],
1696                         'verb' => ACTIVITY_POST,
1697                         'otype' => 'mail'
1698                 ));
1699         }
1700
1701         return;
1702 }
1703
1704 function diaspora_message($importer,$xml,$msg) {
1705
1706         $a = get_app();
1707
1708         $msg_guid = notags(unxmlify($xml->guid));
1709         $msg_parent_guid = notags(unxmlify($xml->parent_guid));
1710         $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
1711         $msg_author_signature = notags(unxmlify($xml->author_signature));
1712         $msg_text = unxmlify($xml->text);
1713         $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1714         $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1715         $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
1716
1717         $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
1718
1719         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
1720         if(! $contact) {
1721                 logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
1722                 return;
1723         }
1724
1725         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1726                 logger('diaspora_message: Ignoring this author.');
1727                 return 202;
1728         }
1729
1730         $conversation = null;
1731
1732         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1733                 intval($importer['uid']),
1734                 dbesc($msg_conversation_guid)
1735         );
1736         if(count($c))
1737                 $conversation = $c[0];
1738         else {
1739                 logger('diaspora_message: conversation not available.');
1740                 return;
1741         }
1742
1743         $reply = 0;
1744
1745         $body = diaspora2bb($msg_text);
1746         $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1747
1748         $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1749
1750
1751         $author_signature = base64_decode($msg_author_signature);
1752
1753         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1754         if(is_array($person) && x($person,'pubkey'))
1755                 $key = $person['pubkey'];
1756         else {
1757                 logger('diaspora_message: unable to find author details');
1758                 return;
1759         }
1760
1761         if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1762                 logger('diaspora_message: verification failed.');
1763                 return;
1764         }
1765
1766         $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
1767                 dbesc($message_id),
1768                 intval($importer['uid'])
1769         );
1770         if(count($r)) {
1771                 logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
1772                 return;
1773         }
1774
1775         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')",
1776                 intval($importer['uid']),
1777                 dbesc($msg_guid),
1778                 intval($conversation['id']),
1779                 dbesc($person['name']),
1780                 dbesc($person['photo']),
1781                 dbesc($person['url']),
1782                 intval($contact['id']),
1783                 dbesc($conversation['subject']),
1784                 dbesc($body),
1785                 0,
1786                 1,
1787                 dbesc($message_id),
1788                 dbesc($parent_uri),
1789                 dbesc($msg_created_at)
1790         );
1791
1792         q("update conv set updated = '%s' where id = %d",
1793                 dbesc(datetime_convert()),
1794                 intval($conversation['id'])
1795         );
1796
1797         return;
1798 }
1799
1800
1801 function diaspora_photo($importer,$xml,$msg,$attempt=1) {
1802
1803         $a = get_app();
1804
1805         logger('diaspora_photo: init',LOGGER_DEBUG);
1806
1807         $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
1808
1809         $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
1810
1811         $status_message_guid = notags(unxmlify($xml->status_message_guid));
1812
1813         $guid = notags(unxmlify($xml->guid));
1814
1815         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1816
1817         $public = notags(unxmlify($xml->public));
1818
1819         $created_at = notags(unxmlify($xml_created_at));
1820
1821         logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
1822
1823         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1824         if(! $contact) {
1825                 logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
1826                 return;
1827         }
1828
1829         if(! diaspora_post_allow($importer,$contact)) {
1830                 logger('diaspora_photo: Ignoring this author.');
1831                 return 202;
1832         }
1833
1834         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1835                 intval($importer['uid']),
1836                 dbesc($status_message_guid)
1837         );
1838         if(! count($r)) {
1839                 if($attempt <= 3) {
1840                         q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)",
1841                            intval($importer['uid']),
1842                            dbesc(serialize($msg)),
1843                            intval($attempt + 1)
1844                         );
1845                 }
1846                 logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid);
1847                 return;
1848         }
1849
1850         $parent_item = $r[0];
1851
1852         $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
1853
1854         $link_text = scale_external_images($link_text, true,
1855                                            array($remote_photo_name, 'scaled_full_' . $remote_photo_name));
1856
1857         if(strpos($parent_item['body'],$link_text) === false) {
1858                 $r = q("update item set `body` = '%s', `visible` = 1 where `id` = %d and `uid` = %d",
1859                         dbesc($link_text . $parent_item['body']),
1860                         intval($parent_item['id']),
1861                         intval($parent_item['uid'])
1862                 );
1863         }
1864
1865         return;
1866 }
1867
1868
1869
1870
1871 function diaspora_like($importer,$xml,$msg) {
1872
1873         $a = get_app();
1874         $guid = notags(unxmlify($xml->guid));
1875         $parent_guid = notags(unxmlify($xml->parent_guid));
1876         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1877         $target_type = notags(unxmlify($xml->target_type));
1878         $positive = notags(unxmlify($xml->positive));
1879         $author_signature = notags(unxmlify($xml->author_signature));
1880
1881         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1882
1883         // likes on comments not supported here and likes on photos not supported by Diaspora
1884
1885 //      if($target_type !== 'Post')
1886 //              return;
1887
1888         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1889         if(! $contact) {
1890                 logger('diaspora_like: cannot find contact: ' . $msg['author']);
1891                 return;
1892         }
1893
1894         if(! diaspora_post_allow($importer,$contact)) {
1895                 logger('diaspora_like: Ignoring this author.');
1896                 return 202;
1897         }
1898
1899         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1900                 intval($importer['uid']),
1901                 dbesc($parent_guid)
1902         );
1903         if(! count($r)) {
1904                 logger('diaspora_like: parent item not found: ' . $guid);
1905                 return;
1906         }
1907
1908         $parent_item = $r[0];
1909
1910         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1911                 intval($importer['uid']),
1912                 dbesc($guid)
1913         );
1914         if(count($r)) {
1915                 if($positive === 'true') {
1916                         logger('diaspora_like: duplicate like: ' . $guid);
1917                         return;
1918                 }
1919                 // Note: I don't think "Like" objects with positive = "false" are ever actually used
1920                 // It looks like "RelayableRetractions" are used for "unlike" instead
1921                 if($positive === 'false') {
1922                         logger('diaspora_like: received a like with positive set to "false"...ignoring');
1923 /*                      q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d",
1924                                 intval($r[0]['id']),
1925                                 intval($importer['uid'])
1926                         );*/
1927                         // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
1928                         //  send notification via proc_run()
1929                         return;
1930                 }
1931         }
1932         // Note: I don't think "Like" objects with positive = "false" are ever actually used
1933         // It looks like "RelayableRetractions" are used for "unlike" instead
1934         if($positive === 'false') {
1935                 logger('diaspora_like: received a like with positive set to "false"');
1936                 logger('diaspora_like: unlike received with no corresponding like...ignoring');
1937                 return;
1938         }
1939
1940
1941         /* How Diaspora performs "like" signature checking:
1942
1943            - If an item has been sent by the like author to the top-level post owner to relay on
1944              to the rest of the contacts on the top-level post, the top-level post owner should check
1945              the author_signature, then create a parent_author_signature before relaying the like on
1946            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1947              check only the parent_author_signature. Basically, they trust that the top-level post
1948              owner has already verified the authenticity of anything he/she sends out
1949            - In either case, the signature that get checked is the signature created by the person
1950              who sent the salmon
1951         */
1952
1953         $signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
1954         $key = $msg['key'];
1955
1956         if($parent_author_signature) {
1957                 // If a parent_author_signature exists, then we've received the like
1958                 // relayed from the top-level post owner. There's no need to check the
1959                 // author_signature if the parent_author_signature is valid
1960
1961                 $parent_author_signature = base64_decode($parent_author_signature);
1962
1963                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1964                         if (intval(get_config('system','ignore_diaspora_like_signature')))
1965                                 logger('diaspora_like: top-level owner verification failed. Proceeding anyway.');
1966                         else {
1967                                 logger('diaspora_like: top-level owner verification failed.');
1968                                 return;
1969                         }
1970                 }
1971         }
1972         else {
1973                 // If there's no parent_author_signature, then we've received the like
1974                 // from the like creator. In that case, the person is "like"ing
1975                 // our post, so he/she must be a contact of ours and his/her public key
1976                 // should be in $msg['key']
1977
1978                 $author_signature = base64_decode($author_signature);
1979
1980                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1981                         if (intval(get_config('system','ignore_diaspora_like_signature')))
1982                                 logger('diaspora_like: like creator verification failed. Proceeding anyway');
1983                         else {
1984                                 logger('diaspora_like: like creator verification failed.');
1985                                 return;
1986                         }
1987                 }
1988         }
1989
1990         // Phew! Everything checks out. Now create an item.
1991
1992         // Find the original comment author information.
1993         // We need this to make sure we display the comment author
1994         // information (name and avatar) correctly.
1995         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1996                 $person = $contact;
1997         else {
1998                 $person = find_diaspora_person_by_handle($diaspora_handle);
1999
2000                 if(! is_array($person)) {
2001                         logger('diaspora_like: unable to find author details');
2002                         return;
2003                 }
2004         }
2005
2006         $uri = $diaspora_handle . ':' . $guid;
2007
2008         $activity = ACTIVITY_LIKE;
2009         $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
2010         $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
2011         $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
2012         $body = $parent_item['body'];
2013
2014         $obj = <<< EOT
2015
2016         <object>
2017                 <type>$objtype</type>
2018                 <local>1</local>
2019                 <id>{$parent_item['uri']}</id>
2020                 <link>$link</link>
2021                 <title></title>
2022                 <content>$body</content>
2023         </object>
2024 EOT;
2025         $bodyverb = t('%1$s likes %2$s\'s %3$s');
2026
2027         $arr = array();
2028
2029         $arr['uri'] = $uri;
2030         $arr['uid'] = $importer['uid'];
2031         $arr['guid'] = $guid;
2032         $arr['network']  = NETWORK_DIASPORA;
2033         $arr['contact-id'] = $contact['id'];
2034         $arr['type'] = 'activity';
2035         $arr['wall'] = $parent_item['wall'];
2036         $arr['gravity'] = GRAVITY_LIKE;
2037         $arr['parent'] = $parent_item['id'];
2038         $arr['parent-uri'] = $parent_item['uri'];
2039
2040         $arr['owner-name'] = $parent_item['name'];
2041         $arr['owner-link'] = $parent_item['url'];
2042         //$arr['owner-avatar'] = $parent_item['thumb'];
2043         $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']);
2044
2045         $arr['author-name'] = $person['name'];
2046         $arr['author-link'] = $person['url'];
2047         $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
2048
2049         $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2050         $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
2051         //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
2052         $plink = '[url='.$a->get_baseurl().'/display/'.urlencode($guid).']'.$post_type.'[/url]';
2053         $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
2054
2055         $arr['app']  = 'Diaspora';
2056
2057         $arr['private'] = $parent_item['private'];
2058         $arr['verb'] = $activity;
2059         $arr['object-type'] = $objtype;
2060         $arr['object'] = $obj;
2061         $arr['visible'] = 1;
2062         $arr['unseen'] = 1;
2063         $arr['last-child'] = 0;
2064
2065         $message_id = item_store($arr);
2066
2067
2068         //if($message_id) {
2069         //      q("update item set plink = '%s' where id = %d",
2070         //              //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
2071         //              dbesc($a->get_baseurl().'/display/'.$guid),
2072         //              intval($message_id)
2073         //      );
2074         //}
2075
2076         if(! $parent_author_signature) {
2077                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2078                         intval($message_id),
2079                         dbesc($signed_data),
2080                         dbesc(base64_encode($author_signature)),
2081                         dbesc($diaspora_handle)
2082                 );
2083         }
2084
2085         // if the message isn't already being relayed, notify others
2086         // the existence of parent_author_signature means the parent_author or owner
2087         // is already relaying. The parent_item['origin'] indicates the message was created on our system
2088
2089         if(($parent_item['origin']) && (! $parent_author_signature))
2090                 proc_run('php','include/notifier.php','comment-import',$message_id);
2091
2092         return;
2093 }
2094
2095 function diaspora_retraction($importer,$xml) {
2096
2097
2098         $guid = notags(unxmlify($xml->guid));
2099         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2100         $type = notags(unxmlify($xml->type));
2101
2102         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2103         if(! $contact)
2104                 return;
2105
2106         if($type === 'Person') {
2107                 require_once('include/Contact.php');
2108                 contact_remove($contact['id']);
2109         }
2110         elseif($type === 'Post') {
2111                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2112                         dbesc('guid'),
2113                         intval($importer['uid'])
2114                 );
2115                 if(count($r)) {
2116                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2117                                 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d",
2118                                         dbesc(datetime_convert()),
2119                                         intval($r[0]['id'])
2120                                 );
2121                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2122                         }
2123                 }
2124         }
2125
2126         return 202;
2127         // NOTREACHED
2128 }
2129
2130 function diaspora_signed_retraction($importer,$xml,$msg) {
2131
2132
2133         $guid = notags(unxmlify($xml->target_guid));
2134         $diaspora_handle = notags(unxmlify($xml->sender_handle));
2135         $type = notags(unxmlify($xml->target_type));
2136         $sig = notags(unxmlify($xml->target_author_signature));
2137
2138         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
2139
2140         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2141         if(! $contact) {
2142                 logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']);
2143                 return;
2144         }
2145
2146
2147         $signed_data = $guid . ';' . $type ;
2148         $key = $msg['key'];
2149
2150         /* How Diaspora performs relayable_retraction signature checking:
2151
2152            - If an item has been sent by the item author to the top-level post owner to relay on
2153              to the rest of the contacts on the top-level post, the top-level post owner checks
2154              the author_signature, then creates a parent_author_signature before relaying the item on
2155            - If an item has been relayed on by the top-level post owner, the contacts who receive it
2156              check only the parent_author_signature. Basically, they trust that the top-level post
2157              owner has already verified the authenticity of anything he/she sends out
2158            - In either case, the signature that get checked is the signature created by the person
2159              who sent the salmon
2160         */
2161
2162         if($parent_author_signature) {
2163
2164                 $parent_author_signature = base64_decode($parent_author_signature);
2165
2166                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2167                         logger('diaspora_signed_retraction: top-level post owner verification failed');
2168                         return;
2169                 }
2170
2171         }
2172         else {
2173
2174                 $sig_decode = base64_decode($sig);
2175
2176                 if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
2177                         logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
2178                         return;
2179                 }
2180         }
2181
2182         if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
2183                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2184                         dbesc($guid),
2185                         intval($importer['uid'])
2186                 );
2187                 if(count($r)) {
2188                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2189                                 q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d",
2190                                         dbesc(datetime_convert()),
2191                                         dbesc(datetime_convert()),
2192                                         intval($r[0]['id'])
2193                                 );
2194                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2195
2196                                 // Now check if the retraction needs to be relayed by us
2197                                 //
2198                                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2199                                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2200                                 // The only item with `parent` and `id` as the parent id is the parent item.
2201                                 $p = q("select origin from item where parent = %d and id = %d limit 1",
2202                                         $r[0]['parent'],
2203                                         $r[0]['parent']
2204                                 );
2205                                 if(count($p)) {
2206                                         if(($p[0]['origin']) && (! $parent_author_signature)) {
2207                                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2208                                                         $r[0]['id'],
2209                                                         dbesc($signed_data),
2210                                                         dbesc($sig),
2211                                                         dbesc($diaspora_handle)
2212                                                 );
2213
2214                                                 // the existence of parent_author_signature would have meant the parent_author or owner
2215                                                 // is already relaying.
2216                                                 logger('diaspora_signed_retraction: relaying relayable_retraction');
2217
2218                                                 proc_run('php','include/notifier.php','drop',$r[0]['id']);
2219                                         }
2220                                 }
2221                         }
2222                 }
2223         }
2224         else
2225                 logger('diaspora_signed_retraction: unknown type: ' . $type);
2226
2227         return 202;
2228         // NOTREACHED
2229 }
2230
2231 function diaspora_profile($importer,$xml,$msg) {
2232
2233         $a = get_app();
2234         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2235
2236
2237         if($diaspora_handle != $msg['author']) {
2238                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
2239                 return 202;
2240         }
2241
2242         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2243         if(! $contact)
2244                 return;
2245
2246         if($contact['blocked']) {
2247                 logger('diaspora_post: Ignoring this author.');
2248                 return 202;
2249         }
2250
2251         $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
2252         $image_url = unxmlify($xml->image_url);
2253         $birthday = unxmlify($xml->birthday);
2254         $location = diaspora2bb(unxmlify($xml->location));
2255         $about = diaspora2bb(unxmlify($xml->bio));
2256         $gender = unxmlify($xml->gender);
2257         $tags = unxmlify($xml->tag_string);
2258
2259         $tags = explode("#", $tags);
2260
2261         $keywords = array();
2262         foreach ($tags as $tag) {
2263                 $tag = trim(strtolower($tag));
2264                 if ($tag != "")
2265                         $keywords[] = $tag;
2266         }
2267
2268         $keywords = implode(", ", $keywords);
2269
2270         $handle_parts = explode("@", $diaspora_handle);
2271         if($name === '') {
2272                 $name = $handle_parts[0];
2273         }
2274
2275         if( preg_match("|^https?://|", $image_url) === 0) {
2276                 $image_url = "http://" . $handle_parts[1] . $image_url;
2277         }
2278
2279 /*      $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
2280                 intval($importer['uid']),
2281                 intval($contact['id'])
2282         );
2283         $oldphotos = ((count($r)) ? $r : null);*/
2284
2285         require_once('include/Photo.php');
2286
2287         $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
2288
2289         // Generic birthday. We don't know the timezone. The year is irrelevant.
2290
2291         $birthday = str_replace('1000','1901',$birthday);
2292
2293         $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
2294
2295         // this is to prevent multiple birthday notifications in a single year
2296         // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2297
2298         if(substr($birthday,5) === substr($contact['bd'],5))
2299                 $birthday = $contact['bd'];
2300
2301         // TODO: update name on item['author-name'] if the name changed. See consume_feed()
2302         // Not doing this currently because D* protocol is scheduled for revision soon.
2303
2304         $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2305                 dbesc($name),
2306                 dbesc(datetime_convert()),
2307                 dbesc($images[0]),
2308                 dbesc($images[1]),
2309                 dbesc($images[2]),
2310                 dbesc(datetime_convert()),
2311                 dbesc($birthday),
2312                 dbesc($location),
2313                 dbesc($about),
2314                 dbesc($keywords),
2315                 dbesc($gender),
2316                 intval($contact['id']),
2317                 intval($importer['uid'])
2318         );
2319
2320         if (unxmlify($xml->searchable) == "true") {
2321                 require_once('include/socgraph.php');
2322                 poco_check($contact['url'], $name, NETWORK_DIASPORA, $images[0], $about, $location, $gender, $keywords, "",
2323                         datetime_convert(), 2, $contact['id'], $importer['uid']);
2324         }
2325
2326         $profileurl = "";
2327         $author = q("SELECT * FROM `unique_contacts` WHERE `url`='%s' LIMIT 1",
2328                         dbesc(normalise_link($contact['url'])));
2329
2330         if (count($author) == 0) {
2331                 q("INSERT INTO `unique_contacts` (`url`, `name`, `avatar`, `location`, `about`) VALUES ('%s', '%s', '%s', '%s', '%s')",
2332                         dbesc(normalise_link($contact['url'])), dbesc($name), dbesc($location), dbesc($about), dbesc($images[0]));
2333
2334                 $author = q("SELECT id FROM unique_contacts WHERE url='%s' LIMIT 1",
2335                         dbesc(normalise_link($contact['url'])));
2336         } else if (normalise_link($contact['url']).$name.$location.$about != normalise_link($author[0]["url"]).$author[0]["name"].$author[0]["location"].$author[0]["about"]) {
2337                 q("UPDATE unique_contacts SET name = '%s', avatar = '%s', `location` = '%s', `about` = '%s' WHERE url = '%s'",
2338                 dbesc($name), dbesc($images[0]), dbesc($location), dbesc($about), dbesc(normalise_link($contact['url'])));
2339         }
2340
2341 /*      if($r) {
2342                 if($oldphotos) {
2343                         foreach($oldphotos as $ph) {
2344                                 q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
2345                                         intval($importer['uid']),
2346                                         intval($contact['id']),
2347                                         dbesc($ph['resource-id'])
2348                                 );
2349                         }
2350                 }
2351         }       */
2352
2353         return;
2354
2355 }
2356
2357 function diaspora_share($me,$contact) {
2358         $a = get_app();
2359         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2360         $theiraddr = $contact['addr'];
2361
2362         $tpl = get_markup_template('diaspora_share.tpl');
2363         $msg = replace_macros($tpl, array(
2364                 '$sender' => $myaddr,
2365                 '$recipient' => $theiraddr
2366         ));
2367
2368         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2369         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2370
2371         return(diaspora_transmit($owner,$contact,$slap, false));
2372 }
2373
2374 function diaspora_unshare($me,$contact) {
2375
2376         $a = get_app();
2377         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2378
2379         $tpl = get_markup_template('diaspora_retract.tpl');
2380         $msg = replace_macros($tpl, array(
2381                 '$guid'   => $me['guid'],
2382                 '$type'   => 'Person',
2383                 '$handle' => $myaddr
2384         ));
2385
2386         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2387         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2388
2389         return(diaspora_transmit($owner,$contact,$slap, false));
2390
2391 }
2392
2393
2394 function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
2395
2396         $a = get_app();
2397         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2398         $theiraddr = $contact['addr'];
2399
2400         $images = array();
2401
2402         $title = $item['title'];
2403         $body = $item['body'];
2404
2405 /*
2406         // We're trying to match Diaspora's split message/photo protocol but
2407         // all the photos are displayed on D* as links and not img's - even
2408         // though we're sending pretty much precisely what they send us when
2409         // doing the same operation.
2410         // Commented out for now, we'll use bb2diaspora to convert photos to markdown
2411         // which seems to get through intact.
2412
2413         $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
2414         if($cnt) {
2415                 foreach($matches as $mtch) {
2416                         $detail = array();
2417                         $detail['str'] = $mtch[0];
2418                         $detail['path'] = dirname($mtch[1]) . '/';
2419                         $detail['file'] = basename($mtch[1]);
2420                         $detail['guid'] = $item['guid'];
2421                         $detail['handle'] = $myaddr;
2422                         $images[] = $detail;
2423                         $body = str_replace($detail['str'],$mtch[1],$body);
2424                 }
2425         }
2426 */
2427
2428         //if(strlen($title))
2429         //      $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
2430
2431         // convert to markdown
2432         $body = xmlify(html_entity_decode(bb2diaspora($body)));
2433         //$body = bb2diaspora($body);
2434
2435         // Adding the title
2436         if(strlen($title))
2437                 $body = "## ".html_entity_decode($title)."\n\n".$body;
2438
2439         if($item['attach']) {
2440                 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
2441                 if(cnt) {
2442                         $body .= "\n" . t('Attachments:') . "\n";
2443                         foreach($matches as $mtch) {
2444                                 $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
2445                         }
2446                 }
2447         }
2448
2449
2450         $public = (($item['private']) ? 'false' : 'true');
2451
2452         require_once('include/datetime.php');
2453         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2454
2455         // Detect a share element and do a reshare
2456         // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb
2457         if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) {
2458                 $tpl = get_markup_template('diaspora_reshare.tpl');
2459                 $msg = replace_macros($tpl, array(
2460                         '$root_handle' => xmlify($ret['root_handle']),
2461                         '$root_guid' => $ret['root_guid'],
2462                         '$guid' => $item['guid'],
2463                         '$handle' => xmlify($myaddr),
2464                         '$public' => $public,
2465                         '$created' => $created,
2466                         '$provider' => $item["app"]
2467                 ));
2468         } else {
2469                 $tpl = get_markup_template('diaspora_post.tpl');
2470                 $msg = replace_macros($tpl, array(
2471                         '$body' => $body,
2472                         '$guid' => $item['guid'],
2473                         '$handle' => xmlify($myaddr),
2474                         '$public' => $public,
2475                         '$created' => $created,
2476                         '$provider' => $item["app"]
2477                 ));
2478         }
2479
2480         logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA);
2481
2482         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2483         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2484
2485         $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
2486
2487         logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG);
2488
2489         if(count($images)) {
2490                 diaspora_send_images($item,$owner,$contact,$images,$public_batch);
2491         }
2492
2493         return $return_code;
2494 }
2495
2496 function diaspora_is_reshare($body) {
2497         $body = trim($body);
2498
2499         // Skip if it isn't a pure repeated messages
2500         // Does it start with a share?
2501         if (strpos($body, "[share") > 0)
2502                 return(false);
2503
2504         // Does it end with a share?
2505         if (strlen($body) > (strrpos($body, "[/share]") + 8))
2506                 return(false);
2507
2508         $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2509         // Skip if there is no shared message in there
2510         if ($body == $attributes)
2511                 return(false);
2512
2513         $profile = "";
2514         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2515         if ($matches[1] != "")
2516                 $profile = $matches[1];
2517
2518         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2519         if ($matches[1] != "")
2520                 $profile = $matches[1];
2521
2522         $ret= array();
2523
2524         $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2525         if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2526                 return(false);
2527
2528         $link = "";
2529         preg_match("/link='(.*?)'/ism", $attributes, $matches);
2530         if ($matches[1] != "")
2531                 $link = $matches[1];
2532
2533         preg_match('/link="(.*?)"/ism', $attributes, $matches);
2534         if ($matches[1] != "")
2535                 $link = $matches[1];
2536
2537         $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2538         if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
2539                 return(false);
2540
2541         return($ret);
2542 }
2543
2544 function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
2545         $a = get_app();
2546         if(! count($images))
2547                 return;
2548         $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
2549
2550         $tpl = get_markup_template('diaspora_photo.tpl');
2551         foreach($images as $image) {
2552                 if(! stristr($image['path'],$mysite))
2553                         continue;
2554                 $resource = str_replace('.jpg','',$image['file']);
2555                 $resource = substr($resource,0,strpos($resource,'-'));
2556
2557                 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
2558                         dbesc($resource),
2559                         intval($owner['uid'])
2560                 );
2561                 if(! count($r))
2562                         continue;
2563                 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
2564                 $msg = replace_macros($tpl,array(
2565                         '$path' => xmlify($image['path']),
2566                         '$filename' => xmlify($image['file']),
2567                         '$msg_guid' => xmlify($image['guid']),
2568                         '$guid' => xmlify($r[0]['guid']),
2569                         '$handle' => xmlify($image['handle']),
2570                         '$public' => xmlify($public),
2571                         '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
2572                 ));
2573
2574
2575                 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
2576                 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2577                 //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2578
2579                 diaspora_transmit($owner,$contact,$slap,$public_batch);
2580         }
2581
2582 }
2583
2584 function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
2585
2586         $a = get_app();
2587         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2588 //      $theiraddr = $contact['addr'];
2589
2590         // Diaspora doesn't support threaded comments, but some
2591         // versions of Diaspora (i.e. Diaspora-pistos) support
2592         // likes on comments
2593         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2594                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2595                         dbesc($item['thr-parent'])
2596                       );
2597         }
2598         else {
2599                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2600                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2601                 // The only item with `parent` and `id` as the parent id is the parent item.
2602                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2603                         intval($item['parent']),
2604                         intval($item['parent'])
2605                 );
2606         }
2607         if(count($p))
2608                 $parent = $p[0];
2609         else
2610                 return;
2611
2612         if($item['verb'] === ACTIVITY_LIKE) {
2613                 $tpl = get_markup_template('diaspora_like.tpl');
2614                 $like = true;
2615                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2616 //              $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post');
2617 //              $positive = (($item['deleted']) ? 'false' : 'true');
2618                 $positive = 'true';
2619
2620                 if(($item['deleted']))
2621                         logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
2622         }
2623         else {
2624                 $tpl = get_markup_template('diaspora_comment.tpl');
2625                 $like = false;
2626         }
2627
2628         $text = html_entity_decode(bb2diaspora($item['body']));
2629
2630         // sign it
2631
2632         if($like)
2633                 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr;
2634         else
2635                 $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr;
2636
2637         $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2638
2639         $msg = replace_macros($tpl,array(
2640                 '$guid' => xmlify($item['guid']),
2641                 '$parent_guid' => xmlify($parent['guid']),
2642                 '$target_type' =>xmlify($target_type),
2643                 '$authorsig' => xmlify($authorsig),
2644                 '$body' => xmlify($text),
2645                 '$positive' => xmlify($positive),
2646                 '$handle' => xmlify($myaddr)
2647         ));
2648
2649         logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
2650
2651         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2652         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2653
2654         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2655 }
2656
2657
2658 function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
2659
2660
2661         $a = get_app();
2662         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2663 //      $theiraddr = $contact['addr'];
2664
2665         $body = $item['body'];
2666         $text = html_entity_decode(bb2diaspora($body));
2667
2668         // Diaspora doesn't support threaded comments, but some
2669         // versions of Diaspora (i.e. Diaspora-pistos) support
2670         // likes on comments
2671         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2672                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2673                         dbesc($item['thr-parent'])
2674                       );
2675         }
2676         else {
2677                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2678                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2679                 // The only item with `parent` and `id` as the parent id is the parent item.
2680                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2681                        intval($item['parent']),
2682                        intval($item['parent'])
2683                       );
2684         }
2685         if(count($p))
2686                 $parent = $p[0];
2687         else
2688                 return;
2689
2690         $like = false;
2691         $relay_retract = false;
2692         $sql_sign_id = 'iid';
2693         if( $item['deleted']) {
2694                 $relay_retract = true;
2695
2696                 $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2697
2698                 $sql_sign_id = 'retract_iid';
2699                 $tpl = get_markup_template('diaspora_relayable_retraction.tpl');
2700         }
2701         elseif($item['verb'] === ACTIVITY_LIKE) {
2702                 $like = true;
2703
2704                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2705 //              $positive = (($item['deleted']) ? 'false' : 'true');
2706                 $positive = 'true';
2707
2708                 $tpl = get_markup_template('diaspora_like_relay.tpl');
2709         }
2710         else { // item is a comment
2711                 $tpl = get_markup_template('diaspora_comment_relay.tpl');
2712         }
2713
2714
2715         // fetch the original signature if the relayable was created by a Diaspora
2716         // or DFRN user. Relayables for other networks are not supported.
2717
2718 /*      $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
2719                 intval($item['id'])
2720         );
2721         if(count($r)) {
2722                 $orig_sign = $r[0];
2723                 $signed_text = $orig_sign['signed_text'];
2724                 $authorsig = $orig_sign['signature'];
2725                 $handle = $orig_sign['signer'];
2726         }
2727         else {
2728
2729                 // Author signature information (for likes, comments, and retractions of likes or comments,
2730                 // whether from Diaspora or Friendica) must be placed in the `sign` table before this
2731                 // function is called
2732                 logger('diaspora_send_relay: original author signature not found, cannot send relayable');
2733                 return;
2734         }*/
2735
2736         /* Since the author signature is only checked by the parent, not by the relay recipients,
2737          * I think it may not be necessary for us to do so much work to preserve all the original
2738          * signatures. The important thing that Diaspora DOES need is the original creator's handle.
2739          * Let's just generate that and forget about all the original author signature stuff.
2740          *
2741          * Note: this might be more of an problem if we want to support likes on comments for older
2742          * versions of Diaspora (diaspora-pistos), but since there are a number of problems with
2743          * doing that, let's ignore it for now.
2744          *
2745          * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't
2746          * been done yet
2747          */
2748
2749         $handle = diaspora_handle_from_contact($item['contact-id']);
2750         if(! $handle)
2751                 return;
2752
2753
2754         if($relay_retract)
2755                 $sender_signed_text = $item['guid'] . ';' . $target_type;
2756         elseif($like)
2757                 $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle;
2758         else
2759                 $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle;
2760
2761         // Sign the relayable with the top-level owner's signature
2762         //
2763         // We'll use the $sender_signed_text that we just created, instead of the $signed_text
2764         // stored in the database, because that provides the best chance that Diaspora will
2765         // be able to reconstruct the signed text the same way we did. This is particularly a
2766         // concern for the comment, whose signed text includes the text of the comment. The
2767         // smallest change in the text of the comment, including removing whitespace, will
2768         // make the signature verification fail. Since we translate from BB code to Diaspora's
2769         // markup at the top of this function, which is AFTER we placed the original $signed_text
2770         // in the database, it's hazardous to trust the original $signed_text.
2771
2772         $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256'));
2773
2774         $msg = replace_macros($tpl,array(
2775                 '$guid' => xmlify($item['guid']),
2776                 '$parent_guid' => xmlify($parent['guid']),
2777                 '$target_type' =>xmlify($target_type),
2778                 '$authorsig' => xmlify($authorsig),
2779                 '$parentsig' => xmlify($parentauthorsig),
2780                 '$body' => xmlify($text),
2781                 '$positive' => xmlify($positive),
2782                 '$handle' => xmlify($handle)
2783         ));
2784
2785         logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
2786
2787
2788         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2789         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2790
2791         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2792
2793 }
2794
2795
2796
2797 function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
2798
2799         $a = get_app();
2800         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2801
2802         // Check whether the retraction is for a top-level post or whether it's a relayable
2803         if( $item['uri'] !== $item['parent-uri'] ) {
2804
2805                 $tpl = get_markup_template('diaspora_relay_retraction.tpl');
2806                 $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2807         }
2808         else {
2809
2810                 $tpl = get_markup_template('diaspora_signed_retract.tpl');
2811                 $target_type = 'StatusMessage';
2812         }
2813
2814         $signed_text = $item['guid'] . ';' . $target_type;
2815
2816         $msg = replace_macros($tpl, array(
2817                 '$guid'   => xmlify($item['guid']),
2818                 '$type'   => xmlify($target_type),
2819                 '$handle' => xmlify($myaddr),
2820                 '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
2821         ));
2822
2823         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2824         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2825
2826         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2827 }
2828
2829 function diaspora_send_mail($item,$owner,$contact) {
2830
2831         $a = get_app();
2832         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2833
2834         $r = q("select * from conv where id = %d and uid = %d limit 1",
2835                 intval($item['convid']),
2836                 intval($item['uid'])
2837         );
2838
2839         if(! count($r)) {
2840                 logger('diaspora_send_mail: conversation not found.');
2841                 return;
2842         }
2843         $cnv = $r[0];
2844
2845         $conv = array(
2846                 'guid' => xmlify($cnv['guid']),
2847                 'subject' => xmlify($cnv['subject']),
2848                 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
2849                 'diaspora_handle' => xmlify($cnv['creator']),
2850                 'participant_handles' => xmlify($cnv['recips'])
2851         );
2852
2853         $body = bb2diaspora($item['body']);
2854         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2855
2856         $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';'
2857                 . $created . ';' . $myaddr . ';' . $cnv['guid'];
2858
2859         $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2860
2861         $msg = array(
2862                 'guid' => xmlify($item['guid']),
2863                 'parent_guid' => xmlify($cnv['guid']),
2864                 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
2865                 'author_signature' => xmlify($sig),
2866                 'text' => xmlify($body),
2867                 'created_at' => xmlify($created),
2868                 'diaspora_handle' => xmlify($myaddr),
2869                 'conversation_guid' => xmlify($cnv['guid'])
2870         );
2871
2872         if($item['reply']) {
2873                 $tpl = get_markup_template('diaspora_message.tpl');
2874                 $xmsg = replace_macros($tpl, array('$msg' => $msg));
2875         }
2876         else {
2877                 $conv['messages'] = array($msg);
2878                 $tpl = get_markup_template('diaspora_conversation.tpl');
2879                 $xmsg = replace_macros($tpl, array('$conv' => $conv));
2880         }
2881
2882         logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
2883
2884         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
2885         //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false));
2886
2887         return(diaspora_transmit($owner,$contact,$slap,false));
2888
2889
2890 }
2891
2892 function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) {
2893
2894         $enabled = intval(get_config('system','diaspora_enabled'));
2895         if(! $enabled) {
2896                 return 200;
2897         }
2898
2899         $a = get_app();
2900         $logid = random_string(4);
2901         $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
2902         if(! $dest_url) {
2903                 logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
2904                 return 0;
2905         }
2906
2907         logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
2908
2909         if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) {
2910                 $return_code = 0;
2911         }
2912         else {
2913                 if (!intval(get_config('system','diaspora_test'))) {
2914                         post_url($dest_url . '/', $slap);
2915                         $return_code = $a->get_curl_code();
2916                 } else {
2917                         logger('diaspora_transmit: test_mode');
2918                         return 200;
2919                 }
2920         }
2921
2922         logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
2923
2924         if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
2925                 logger('diaspora_transmit: queue message');
2926
2927                 $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
2928                         intval($contact['id']),
2929                         dbesc(NETWORK_DIASPORA),
2930                         dbesc($slap),
2931                         intval($public_batch)
2932                 );
2933                 if(count($r)) {
2934                         logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
2935                 }
2936                 else {
2937                         // queue message for redelivery
2938                         add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
2939                 }
2940         }
2941
2942
2943         return(($return_code) ? $return_code : (-1));
2944 }
2945
2946