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         $tags = get_tags($body);
 837
 838         if(count($tags)) {
 839                 foreach($tags as $tag) {
 840                         if(strpos($tag,'#') === 0) {
 841                                 if(strpos($tag,'[url='))
 842                                         continue;
 843
 844                                 // don't link tags that are already embedded in links
 845
 846                                 if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
 847                                         continue;
 848                                 if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
 849                                         continue;
 850
 851                                 $basetag = str_replace('_',' ',substr($tag,1));
 852                                 $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
 853                                 if(strlen($str_tags))
 854                                         $str_tags .= ',';
 855                                 $str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
 856                                 continue;
 857                         }
 858                 }
 859         }
 860
 861         $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
 862         if($cnt) {
 863                 foreach($matches as $mtch) {
 864                         if(strlen($str_tags))
 865                                 $str_tags .= ',';
 866                         $str_tags .= '@[url=' . $mtch[1] . '[/url]';
 867                 }
 868         }
 869
 870         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
 871
 872         $datarray['uid'] = $importer['uid'];
 873         $datarray['contact-id'] = $contact['id'];
 874         $datarray['wall'] = 0;
 875         $datarray['network'] = NETWORK_DIASPORA;
 876         $datarray['verb'] = ACTIVITY_POST;
 877         $datarray['guid'] = $guid;
 878         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 879         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 880         $datarray['private'] = $private;
 881         $datarray['parent'] = 0;
 882         $datarray['plink'] = $plink;
 883         $datarray['owner-name'] = $contact['name'];
 884         $datarray['owner-link'] = $contact['url'];
 885         //$datarray['owner-avatar'] = $contact['thumb'];
 886         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
 887         $datarray['author-name'] = $contact['name'];
 888         $datarray['author-link'] = $contact['url'];
 889         $datarray['author-avatar'] = $contact['thumb'];
 890         $datarray['body'] = $body;
 891         $datarray['tag'] = $str_tags;
 892         $datarray['app']  = 'Diaspora';
 893
 894         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
 895
 896         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 897
 898         $message_id = item_store($datarray);
 899
 900         return;
 901
 902 }
 903
 904 function diaspora_store_by_guid($guid, $server) {
 905         require_once("include/Contact.php");
 906
 907         $item = diaspora_fetch_message($guid, $server);
 908
 909         if (!$item)
 910                 return false;
 911
 912         $body = $item["body"];
 913         $str_tags = $item["tag"];
 914         $app = $item["app"];
 915         $created = $item["created"];
 916         $author = $item["author"];
 917         $guid = $item["guid"];
 918         $private = $item["private"];
 919
 920         $message_id = $author.':'.$guid;
 921         $r = q("SELECT `id` FROM `item` WHERE `uid` = 0 AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 922                 dbesc($message_id),
 923                 dbesc($guid)
 924         );
 925         if(count($r))
 926                 return true;
 927
 928         $person = find_diaspora_person_by_handle($author);
 929
 930         $datarray = array();
 931
 932         $datarray['uid'] = 0;
 933         $datarray['contact-id'] = get_contact($person['url'], 0);
 934         $datarray['wall'] = 0;
 935         $datarray['network']  = NETWORK_DIASPORA;
 936         $datarray['guid'] = $guid;
 937         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 938         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 939         $datarray['private'] = $private;
 940         $datarray['parent'] = 0;
 941         $datarray['plink'] = 'https://'.substr($author,strpos($author,'@')+1).'/posts/'.$guid;
 942         $datarray['author-name'] = $person['name'];
 943         $datarray['author-link'] = $person['url'];
 944         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
 945         $datarray['owner-name'] = $datarray['author-name'];
 946         $datarray['owner-link'] = $datarray['author-link'];
 947         $datarray['owner-avatar'] = $datarray['author-avatar'];
 948         $datarray['body'] = $body;
 949         $datarray['tag'] = $str_tags;
 950         $datarray['app']  = $app;
 951         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 952
 953         $message_id = item_store($datarray);
 954
 955         // To-Do:
 956         // Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
 957
 958         return $message_id;
 959 }
 960
 961 function diaspora_fetch_message($guid, $server, $level = 0) {
 962
 963         if ($level > 5)
 964                 return false;
 965
 966         $a = get_app();
 967
 968         // This will not work if the server is not a Diaspora server
 969         $source_url = $server.'/p/'.$guid.'.xml';
 970         $x = fetch_url($source_url);
 971         if(!$x)
 972                 return false;
 973
 974         $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
 975         $source_xml = parse_xml_string($x,false);
 976
 977         $item = array();
 978         $item["app"] = 'Diaspora';
 979         $item["guid"] = $guid;
 980         $body = "";
 981
 982         if ($source_xml->post->status_message->created_at)
 983                 $item["created"] = unxmlify($source_xml->post->status_message->created_at);
 984
 985         if ($source_xml->post->status_message->provider_display_name)
 986                 $item["app"] = unxmlify($source_xml->post->status_message->provider_display_name);
 987
 988         if ($source_xml->post->status_message->diaspora_handle)
 989                 $item["author"] = unxmlify($source_xml->post->status_message->diaspora_handle);
 990
 991         if ($source_xml->post->status_message->guid)
 992                 $item["guid"] = unxmlify($source_xml->post->status_message->guid);
 993
 994         $item["private"] = (unxmlify($source_xml->post->status_message->public) == 'false');
 995
 996         if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
 997                 $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
 998                 $body = scale_external_images($body,false);
 999         } elseif($source_xml->post->asphoto->image_url) {
1000                 $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
1001                 $body = scale_external_images($body);
1002         } elseif($source_xml->post->status_message) {
1003                 $body = diaspora2bb($source_xml->post->status_message->raw_message);
1004
1005                 // Checking for embedded pictures
1006                 if($source_xml->post->status_message->photo->remote_photo_path AND
1007                         $source_xml->post->status_message->photo->remote_photo_name) {
1008
1009                         $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path));
1010                         $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name));
1011
1012                         $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body;
1013
1014                         logger('embedded picture link found: '.$body, LOGGER_DEBUG);
1015                 }
1016
1017                 $body = scale_external_images($body);
1018
1019                 // Add OEmbed and other information to the body
1020                 $body = add_page_info_to_body($body, false, true);
1021         } elseif($source_xml->post->reshare) {
1022                 // Reshare of a reshare
1023                 return diaspora_fetch_message($source_xml->post->reshare->root_guid, $server, ++$level);
1024         } else {
1025                 // Maybe it is a reshare of a photo that will be delivered at a later time (testing)
1026                 logger('no content found: '.print_r($source_xml,true));
1027                 $body = "";
1028         }
1029
1030         if ($body == "")
1031                 return false;
1032
1033         $item["tag"] = '';
1034
1035         $tags = get_tags($body);
1036
1037         if(count($tags)) {
1038                 foreach($tags as $tag) {
1039                         if(strpos($tag,'#') === 0) {
1040                                 if(strpos($tag,'[url='))
1041                                         continue;
1042
1043                                 // don't link tags that are already embedded in links
1044
1045                                 if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
1046                                         continue;
1047                                 if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
1048                                         continue;
1049
1050
1051                                 $basetag = str_replace('_',' ',substr($tag,1));
1052                                 $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
1053                                 if(strlen($item["tag"]))
1054                                         $item["tag"] .= ',';
1055                                 $item["tag"] .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
1056                                 continue;
1057                         }
1058                 }
1059         }
1060
1061         $item["body"] = $body;
1062         return $item;
1063 }
1064
1065 function diaspora_reshare($importer,$xml,$msg) {
1066
1067         logger('diaspora_reshare: init: ' . print_r($xml,true));
1068
1069         $a = get_app();
1070         $guid = notags(unxmlify($xml->guid));
1071         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1072
1073
1074         if($diaspora_handle != $msg['author']) {
1075                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1076                 return 202;
1077         }
1078
1079         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1080         if(! $contact)
1081                 return;
1082
1083         if(! diaspora_post_allow($importer,$contact)) {
1084                 logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
1085                 return 202;
1086         }
1087
1088         $message_id = $diaspora_handle . ':' . $guid;
1089         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1090                 intval($importer['uid']),
1091                 dbesc($message_id),
1092                 dbesc($guid)
1093         );
1094         if(count($r)) {
1095                 logger('diaspora_reshare: message exists: ' . $guid);
1096                 return;
1097         }
1098
1099         $orig_author = notags(unxmlify($xml->root_diaspora_id));
1100         $orig_guid = notags(unxmlify($xml->root_guid));
1101
1102         $create_original_post = false;
1103
1104         // Do we already have this item?
1105         $r = q("SELECT `body`, `tag`, `app`, `author-link`, `plink` FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1106                 dbesc($orig_guid),
1107                 dbesc(NETWORK_DIASPORA)
1108         );
1109         if(count($r)) {
1110                 logger('reshared message '.orig_guid." reshared by ".$guid.' already exists on system: '.$orig_url);
1111
1112                 // Maybe it is already a reshared item?
1113                 // Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
1114                 require_once('include/api.php');
1115                 if (api_share_as_retweet($r[0]))
1116                         $r = array();
1117                 else
1118                         $orig_url = $a->get_baseurl().'/display/'.$orig_guid;
1119         }
1120
1121         if (!count($r)) {
1122                 $body = "";
1123                 $str_tags = "";
1124                 $app = "";
1125
1126                 $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1127
1128                 $server = 'https://'.substr($orig_author,strpos($orig_author,'@')+1);
1129                 logger('1st try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1130                 $item = diaspora_fetch_message($orig_guid, $server);
1131
1132                 if (!$item) {
1133                         $server = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1134                         logger('2nd try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1135                         $item = diaspora_fetch_message($orig_guid, $server);
1136                 }
1137                 if (!$item) {
1138                         $server = 'http://'.substr($orig_author,strpos($orig_author,'@')+1);
1139                         logger('3rd try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1140                         $item = diaspora_fetch_message($orig_guid, $server);
1141                 }
1142                 if (!$item) {
1143                         $server = 'http://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1144                         logger('4th try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1145                         $item = diaspora_fetch_message($orig_guid, $server);
1146                 }
1147
1148                 if ($item) {
1149                         $body = $item["body"];
1150                         $str_tags = $item["tag"];
1151                         $app = $item["app"];
1152                         $orig_created = $item["created"];
1153                         $orig_author = $item["author"];
1154                         $orig_guid = $item["guid"];
1155                         $create_original_post = ($body != "");
1156                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1157                 }
1158         }
1159
1160         $person = find_diaspora_person_by_handle($orig_author);
1161
1162         // allocate a guid on our system - we aren't fixing any collisions.
1163         // we're ignoring them
1164
1165         $g = q("select * from guid where guid = '%s' limit 1",
1166                 dbesc($guid)
1167         );
1168         if(! count($g)) {
1169                 q("insert into guid ( guid ) values ( '%s' )",
1170                         dbesc($guid)
1171                 );
1172         }
1173
1174         $created = unxmlify($xml->created_at);
1175         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1176
1177         $datarray = array();
1178
1179         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1180
1181         $datarray['uid'] = $importer['uid'];
1182         $datarray['contact-id'] = $contact['id'];
1183         $datarray['wall'] = 0;
1184         $datarray['network']  = NETWORK_DIASPORA;
1185         $datarray['guid'] = $guid;
1186         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1187         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1188         $datarray['private'] = $private;
1189         $datarray['parent'] = 0;
1190         $datarray['plink'] = $plink;
1191         $datarray['owner-name'] = $contact['name'];
1192         $datarray['owner-link'] = $contact['url'];
1193         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1194         if (!intval(get_config('system','wall-to-wall_share'))) {
1195                 $prefix = "[share author='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$person['name']).
1196                                 "' profile='".$person['url'].
1197                                 "' avatar='".((x($person,'thumb')) ? $person['thumb'] : $person['photo']).
1198                                 "' link='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$orig_url)."']";
1199                 $datarray['author-name'] = $contact['name'];
1200                 $datarray['author-link'] = $contact['url'];
1201                 $datarray['author-avatar'] = $contact['thumb'];
1202                 $datarray['body'] = $prefix.$body."[/share]";
1203         } else {
1204                 // Let reshared messages look like wall-to-wall posts
1205                 $datarray['author-name'] = $person['name'];
1206                 $datarray['author-link'] = $person['url'];
1207                 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1208                 $datarray['body'] = $body;
1209         }
1210
1211         $datarray['tag'] = $str_tags;
1212         $datarray['app']  = $app;
1213
1214         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing)
1215         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
1216
1217         // Store the original item of a reshare
1218         if ($create_original_post) {
1219                 require_once("include/Contact.php");
1220
1221                 $datarray2 = $datarray;
1222
1223                 $datarray2['uid'] = 0;
1224                 $datarray2['contact-id'] = get_contact($person['url'], 0);
1225                 $datarray2['guid'] = $orig_guid;
1226                 $datarray2['uri'] = $datarray2['parent-uri'] = $orig_author.':'.$orig_guid;
1227                 $datarray2['changed'] = $datarray2['created'] = $datarray2['edited'] = datetime_convert('UTC','UTC',$orig_created);
1228                 $datarray2['plink'] = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1229
1230                 $datarray2['author-name'] = $person['name'];
1231                 $datarray2['author-link'] = $person['url'];
1232                 $datarray2['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1233                 $datarray2['owner-name'] = $datarray2['author-name'];
1234                 $datarray2['owner-link'] = $datarray2['author-link'];
1235                 $datarray2['owner-avatar'] = $datarray2['author-avatar'];
1236                 $datarray2['body'] = $body;
1237
1238                 $message_id = item_store($datarray2);
1239
1240                 logger("Store original item ".$orig_guid." under message id ".$message_id);
1241         }
1242
1243         $message_id = item_store($datarray);
1244
1245         return;
1246
1247 }
1248
1249
1250 function diaspora_asphoto($importer,$xml,$msg) {
1251         logger('diaspora_asphoto called');
1252
1253         $a = get_app();
1254         $guid = notags(unxmlify($xml->guid));
1255         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1256
1257         if($diaspora_handle != $msg['author']) {
1258                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1259                 return 202;
1260         }
1261
1262         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1263         if(! $contact)
1264                 return;
1265
1266         if(! diaspora_post_allow($importer,$contact)) {
1267                 logger('diaspora_asphoto: Ignoring this author.');
1268                 return 202;
1269         }
1270
1271         $message_id = $diaspora_handle . ':' . $guid;
1272         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1273                 intval($importer['uid']),
1274                 dbesc($message_id),
1275                 dbesc($guid)
1276         );
1277         if(count($r)) {
1278                 logger('diaspora_asphoto: message exists: ' . $guid);
1279                 return;
1280         }
1281
1282         // allocate a guid on our system - we aren't fixing any collisions.
1283         // we're ignoring them
1284
1285         $g = q("select * from guid where guid = '%s' limit 1",
1286                 dbesc($guid)
1287         );
1288         if(! count($g)) {
1289                 q("insert into guid ( guid ) values ( '%s' )",
1290                         dbesc($guid)
1291                 );
1292         }
1293
1294         $created = unxmlify($xml->created_at);
1295         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1296
1297         if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
1298                 $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
1299                 $body = scale_external_images($body,false);
1300         }
1301         elseif($xml->image_url) {
1302                 $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
1303                 $body = scale_external_images($body);
1304         }
1305         else {
1306                 logger('diaspora_asphoto: no photo url found.');
1307                 return;
1308         }
1309
1310         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1311
1312         $datarray = array();
1313
1314         $datarray['uid'] = $importer['uid'];
1315         $datarray['contact-id'] = $contact['id'];
1316         $datarray['wall'] = 0;
1317         $datarray['network']  = NETWORK_DIASPORA;
1318         $datarray['guid'] = $guid;
1319         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1320         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1321         $datarray['private'] = $private;
1322         $datarray['parent'] = 0;
1323         $datarray['plink'] = $plink;
1324         $datarray['owner-name'] = $contact['name'];
1325         $datarray['owner-link'] = $contact['url'];
1326         //$datarray['owner-avatar'] = $contact['thumb'];
1327         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1328         $datarray['author-name'] = $contact['name'];
1329         $datarray['author-link'] = $contact['url'];
1330         $datarray['author-avatar'] = $contact['thumb'];
1331         $datarray['body'] = $body;
1332
1333         $datarray['app']  = 'Diaspora/Cubbi.es';
1334
1335         $message_id = item_store($datarray);
1336
1337         //if($message_id) {
1338         //      q("update item set plink = '%s' where id = %d",
1339         //              dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1340         //              intval($message_id)
1341         //      );
1342         //}
1343
1344         return;
1345
1346 }
1347
1348
1349
1350
1351
1352
1353 function diaspora_comment($importer,$xml,$msg) {
1354
1355         $a = get_app();
1356         $guid = notags(unxmlify($xml->guid));
1357         $parent_guid = notags(unxmlify($xml->parent_guid));
1358         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1359         $target_type = notags(unxmlify($xml->target_type));
1360         $text = unxmlify($xml->text);
1361         $author_signature = notags(unxmlify($xml->author_signature));
1362
1363         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1364
1365         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1366         if(! $contact) {
1367                 logger('diaspora_comment: cannot find contact: ' . $msg['author']);
1368                 return;
1369         }
1370
1371         if(! diaspora_post_allow($importer,$contact)) {
1372                 logger('diaspora_comment: Ignoring this author.');
1373                 return 202;
1374         }
1375
1376         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1377                 intval($importer['uid']),
1378                 dbesc($guid)
1379         );
1380         if(count($r)) {
1381                 logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
1382                 return;
1383         }
1384
1385         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1386                 intval($importer['uid']),
1387                 dbesc($parent_guid)
1388         );
1389         if(! count($r)) {
1390                 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
1391                 return;
1392         }
1393         $parent_item = $r[0];
1394
1395
1396         /* How Diaspora performs comment signature checking:
1397
1398            - If an item has been sent by the comment author to the top-level post owner to relay on
1399              to the rest of the contacts on the top-level post, the top-level post owner should check
1400              the author_signature, then create a parent_author_signature before relaying the comment on
1401            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1402              check only the parent_author_signature. Basically, they trust that the top-level post
1403              owner has already verified the authenticity of anything he/she sends out
1404            - In either case, the signature that get checked is the signature created by the person
1405              who sent the salmon
1406         */
1407
1408         $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
1409         $key = $msg['key'];
1410
1411         if($parent_author_signature) {
1412                 // If a parent_author_signature exists, then we've received the comment
1413                 // relayed from the top-level post owner. There's no need to check the
1414                 // author_signature if the parent_author_signature is valid
1415
1416                 $parent_author_signature = base64_decode($parent_author_signature);
1417
1418                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1419                         logger('diaspora_comment: top-level owner verification failed.');
1420                         return;
1421                 }
1422         }
1423         else {
1424                 // If there's no parent_author_signature, then we've received the comment
1425                 // from the comment creator. In that case, the person is commenting on
1426                 // our post, so he/she must be a contact of ours and his/her public key
1427                 // should be in $msg['key']
1428
1429                 $author_signature = base64_decode($author_signature);
1430
1431                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1432                         logger('diaspora_comment: comment author verification failed.');
1433                         return;
1434                 }
1435         }
1436
1437         // Phew! Everything checks out. Now create an item.
1438
1439         // Find the original comment author information.
1440         // We need this to make sure we display the comment author
1441         // information (name and avatar) correctly.
1442         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1443                 $person = $contact;
1444         else {
1445                 $person = find_diaspora_person_by_handle($diaspora_handle);
1446
1447                 if(! is_array($person)) {
1448                         logger('diaspora_comment: unable to find author details');
1449                         return;
1450                 }
1451         }
1452
1453         $body = diaspora2bb($text);
1454         $message_id = $diaspora_handle . ':' . $guid;
1455
1456         $datarray = array();
1457
1458         $str_tags = '';
1459
1460         $tags = get_tags($body);
1461
1462         if(count($tags)) {
1463                 foreach($tags as $tag) {
1464                         if(strpos($tag,'#') === 0) {
1465                                 if(strpos($tag,'[url='))
1466                                         continue;
1467
1468                                 // don't link tags that are already embedded in links
1469
1470                                 if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body))
1471                                         continue;
1472                                 if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body))
1473                                         continue;
1474
1475
1476                                 $basetag = str_replace('_',' ',substr($tag,1));
1477                                 $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body);
1478                                 if(strlen($str_tags))
1479                                         $str_tags .= ',';
1480                                 $str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
1481                                 continue;
1482                         }
1483                 }
1484         }
1485
1486         $datarray['uid'] = $importer['uid'];
1487         $datarray['contact-id'] = $contact['id'];
1488         $datarray['type'] = 'remote-comment';
1489         $datarray['wall'] = $parent_item['wall'];
1490         $datarray['network']  = NETWORK_DIASPORA;
1491         $datarray['verb'] = ACTIVITY_POST;
1492         $datarray['gravity'] = GRAVITY_COMMENT;
1493         $datarray['guid'] = $guid;
1494         $datarray['uri'] = $message_id;
1495         $datarray['parent-uri'] = $parent_item['uri'];
1496
1497         // No timestamps for comments? OK, we'll the use current time.
1498         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
1499         $datarray['private'] = $parent_item['private'];
1500
1501         $datarray['owner-name'] = $parent_item['owner-name'];
1502         $datarray['owner-link'] = $parent_item['owner-link'];
1503         $datarray['owner-avatar'] = $parent_item['owner-avatar'];
1504
1505         $datarray['author-name'] = $person['name'];
1506         $datarray['author-link'] = $person['url'];
1507         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1508         $datarray['body'] = $body;
1509         $datarray['tag'] = $str_tags;
1510
1511         // We can't be certain what the original app is if the message is relayed.
1512         if(($parent_item['origin']) && (! $parent_author_signature))
1513                 $datarray['app']  = 'Diaspora';
1514
1515         $message_id = item_store($datarray);
1516
1517         //if($message_id) {
1518                 //q("update item set plink = '%s' where id = %d",
1519                 //      //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1520                 //      dbesc($a->get_baseurl().'/display/'.$datarray['guid']),
1521                 //      intval($message_id)
1522                 //);
1523         //}
1524
1525         if(($parent_item['origin']) && (! $parent_author_signature)) {
1526                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1527                         intval($message_id),
1528                         dbesc($signed_data),
1529                         dbesc(base64_encode($author_signature)),
1530                         dbesc($diaspora_handle)
1531                 );
1532
1533                 // if the message isn't already being relayed, notify others
1534                 // the existence of parent_author_signature means the parent_author or owner
1535                 // is already relaying.
1536
1537                 proc_run('php','include/notifier.php','comment-import',$message_id);
1538         }
1539
1540         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
1541                 dbesc($parent_item['uri']),
1542                 intval($importer['uid'])
1543         );
1544
1545         if(count($myconv)) {
1546                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
1547
1548                 foreach($myconv as $conv) {
1549
1550                         // now if we find a match, it means we're in this conversation
1551
1552                         if(! link_compare($conv['author-link'],$importer_url))
1553                                 continue;
1554
1555                         require_once('include/enotify.php');
1556
1557                         $conv_parent = $conv['parent'];
1558
1559                         notification(array(
1560                                 'type'         => NOTIFY_COMMENT,
1561                                 'notify_flags' => $importer['notify-flags'],
1562                                 'language'     => $importer['language'],
1563                                 'to_name'      => $importer['username'],
1564                                 'to_email'     => $importer['email'],
1565                                 'uid'          => $importer['uid'],
1566                                 'item'         => $datarray,
1567                                 'link'             => $a->get_baseurl().'/display/'.urlencode($datarray['guid']),
1568                                 'source_name'  => $datarray['author-name'],
1569                                 'source_link'  => $datarray['author-link'],
1570                                 'source_photo' => $datarray['author-avatar'],
1571                                 'verb'         => ACTIVITY_POST,
1572                                 'otype'        => 'item',
1573                                 'parent'       => $conv_parent,
1574                                 'parent_uri'   => $parent_uri
1575                         ));
1576
1577                         // only send one notification
1578                         break;
1579                 }
1580         }
1581         return;
1582 }
1583
1584
1585
1586
1587 function diaspora_conversation($importer,$xml,$msg) {
1588
1589         $a = get_app();
1590
1591         $guid = notags(unxmlify($xml->guid));
1592         $subject = notags(unxmlify($xml->subject));
1593         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1594         $participant_handles = notags(unxmlify($xml->participant_handles));
1595         $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1596
1597         $parent_uri = $diaspora_handle . ':' . $guid;
1598
1599         $messages = $xml->message;
1600
1601         if(! count($messages)) {
1602                 logger('diaspora_conversation: empty conversation');
1603                 return;
1604         }
1605
1606         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1607         if(! $contact) {
1608                 logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
1609                 return;
1610         }
1611
1612         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1613                 logger('diaspora_conversation: Ignoring this author.');
1614                 return 202;
1615         }
1616
1617         $conversation = null;
1618
1619         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1620                 intval($importer['uid']),
1621                 dbesc($guid)
1622         );
1623         if(count($c))
1624                 $conversation = $c[0];
1625         else {
1626                 $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
1627                         intval($importer['uid']),
1628                         dbesc($guid),
1629                         dbesc($diaspora_handle),
1630                         dbesc(datetime_convert('UTC','UTC',$created_at)),
1631                         dbesc(datetime_convert()),
1632                         dbesc($subject),
1633                         dbesc($participant_handles)
1634                 );
1635                 if($r)
1636                         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1637                 intval($importer['uid']),
1638             dbesc($guid)
1639         );
1640             if(count($c))
1641             $conversation = $c[0];
1642         }
1643         if(! $conversation) {
1644                 logger('diaspora_conversation: unable to create conversation.');
1645                 return;
1646         }
1647
1648         foreach($messages as $mesg) {
1649
1650                 $reply = 0;
1651
1652                 $msg_guid = notags(unxmlify($mesg->guid));
1653                 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1654                 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1655                 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1656                 $msg_text = unxmlify($mesg->text);
1657                 $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
1658                 $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
1659                 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1660                 if($msg_conversation_guid != $guid) {
1661                         logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
1662                         continue;
1663                 }
1664
1665                 $body = diaspora2bb($msg_text);
1666                 $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1667
1668                 $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1669
1670                 $author_signature = base64_decode($msg_author_signature);
1671
1672                 if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
1673                         $person = $contact;
1674                         $key = $msg['key'];
1675                 }
1676                 else {
1677                         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1678
1679                         if(is_array($person) && x($person,'pubkey'))
1680                                 $key = $person['pubkey'];
1681                         else {
1682                                 logger('diaspora_conversation: unable to find author details');
1683                                 continue;
1684                         }
1685                 }
1686
1687                 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1688                         logger('diaspora_conversation: verification failed.');
1689                         continue;
1690                 }
1691
1692                 if($msg_parent_author_signature) {
1693                         $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1694
1695                         $parent_author_signature = base64_decode($msg_parent_author_signature);
1696
1697                         $key = $msg['key'];
1698
1699                         if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
1700                                 logger('diaspora_conversation: owner verification failed.');
1701                                 continue;
1702                         }
1703                 }
1704
1705                 $r = q("select id from mail where `uri` = '%s' limit 1",
1706                         dbesc($message_id)
1707                 );
1708                 if(count($r)) {
1709                         logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
1710                         continue;
1711                 }
1712
1713                 q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1714                         intval($importer['uid']),
1715                         dbesc($msg_guid),
1716                         intval($conversation['id']),
1717                         dbesc($person['name']),
1718                         dbesc($person['photo']),
1719                         dbesc($person['url']),
1720                         intval($contact['id']),
1721                         dbesc($subject),
1722                         dbesc($body),
1723                         0,
1724                         0,
1725                         dbesc($message_id),
1726                         dbesc($parent_uri),
1727                         dbesc($msg_created_at)
1728                 );
1729
1730                 q("update conv set updated = '%s' where id = %d",
1731                         dbesc(datetime_convert()),
1732                         intval($conversation['id'])
1733                 );
1734
1735                 require_once('include/enotify.php');
1736                 notification(array(
1737                         'type' => NOTIFY_MAIL,
1738                         'notify_flags' => $importer['notify-flags'],
1739                         'language' => $importer['language'],
1740                         'to_name' => $importer['username'],
1741                         'to_email' => $importer['email'],
1742                         'uid' =>$importer['importer_uid'],
1743                         'item' => array('subject' => $subject, 'body' => $body),
1744                         'source_name' => $person['name'],
1745                         'source_link' => $person['url'],
1746                         'source_photo' => $person['thumb'],
1747                         'verb' => ACTIVITY_POST,
1748                         'otype' => 'mail'
1749                 ));
1750         }
1751
1752         return;
1753 }
1754
1755 function diaspora_message($importer,$xml,$msg) {
1756
1757         $a = get_app();
1758
1759         $msg_guid = notags(unxmlify($xml->guid));
1760         $msg_parent_guid = notags(unxmlify($xml->parent_guid));
1761         $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
1762         $msg_author_signature = notags(unxmlify($xml->author_signature));
1763         $msg_text = unxmlify($xml->text);
1764         $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1765         $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1766         $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
1767
1768         $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
1769
1770         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
1771         if(! $contact) {
1772                 logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
1773                 return;
1774         }
1775
1776         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1777                 logger('diaspora_message: Ignoring this author.');
1778                 return 202;
1779         }
1780
1781         $conversation = null;
1782
1783         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1784                 intval($importer['uid']),
1785                 dbesc($msg_conversation_guid)
1786         );
1787         if(count($c))
1788                 $conversation = $c[0];
1789         else {
1790                 logger('diaspora_message: conversation not available.');
1791                 return;
1792         }
1793
1794         $reply = 0;
1795
1796         $body = diaspora2bb($msg_text);
1797         $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1798
1799         $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1800
1801
1802         $author_signature = base64_decode($msg_author_signature);
1803
1804         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1805         if(is_array($person) && x($person,'pubkey'))
1806                 $key = $person['pubkey'];
1807         else {
1808                 logger('diaspora_message: unable to find author details');
1809                 return;
1810         }
1811
1812         if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1813                 logger('diaspora_message: verification failed.');
1814                 return;
1815         }
1816
1817         $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
1818                 dbesc($message_id),
1819                 intval($importer['uid'])
1820         );
1821         if(count($r)) {
1822                 logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
1823                 return;
1824         }
1825
1826         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')",
1827                 intval($importer['uid']),
1828                 dbesc($msg_guid),
1829                 intval($conversation['id']),
1830                 dbesc($person['name']),
1831                 dbesc($person['photo']),
1832                 dbesc($person['url']),
1833                 intval($contact['id']),
1834                 dbesc($conversation['subject']),
1835                 dbesc($body),
1836                 0,
1837                 1,
1838                 dbesc($message_id),
1839                 dbesc($parent_uri),
1840                 dbesc($msg_created_at)
1841         );
1842
1843         q("update conv set updated = '%s' where id = %d",
1844                 dbesc(datetime_convert()),
1845                 intval($conversation['id'])
1846         );
1847
1848         return;
1849 }
1850
1851
1852 function diaspora_photo($importer,$xml,$msg,$attempt=1) {
1853
1854         $a = get_app();
1855
1856         logger('diaspora_photo: init',LOGGER_DEBUG);
1857
1858         $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
1859
1860         $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
1861
1862         $status_message_guid = notags(unxmlify($xml->status_message_guid));
1863
1864         $guid = notags(unxmlify($xml->guid));
1865
1866         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1867
1868         $public = notags(unxmlify($xml->public));
1869
1870         $created_at = notags(unxmlify($xml_created_at));
1871
1872         logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
1873
1874         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1875         if(! $contact) {
1876                 logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
1877                 return;
1878         }
1879
1880         if(! diaspora_post_allow($importer,$contact)) {
1881                 logger('diaspora_photo: Ignoring this author.');
1882                 return 202;
1883         }
1884
1885         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1886                 intval($importer['uid']),
1887                 dbesc($status_message_guid)
1888         );
1889         if(! count($r)) {
1890                 if($attempt <= 3) {
1891                         q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)",
1892                            intval($importer['uid']),
1893                            dbesc(serialize($msg)),
1894                            intval($attempt + 1)
1895                         );
1896                 }
1897                 logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid);
1898                 return;
1899         }
1900
1901         $parent_item = $r[0];
1902
1903         $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
1904
1905         $link_text = scale_external_images($link_text, true,
1906                                            array($remote_photo_name, 'scaled_full_' . $remote_photo_name));
1907
1908         if(strpos($parent_item['body'],$link_text) === false) {
1909                 $r = q("update item set `body` = '%s', `visible` = 1 where `id` = %d and `uid` = %d",
1910                         dbesc($link_text . $parent_item['body']),
1911                         intval($parent_item['id']),
1912                         intval($parent_item['uid'])
1913                 );
1914         }
1915
1916         return;
1917 }
1918
1919
1920
1921
1922 function diaspora_like($importer,$xml,$msg) {
1923
1924         $a = get_app();
1925         $guid = notags(unxmlify($xml->guid));
1926         $parent_guid = notags(unxmlify($xml->parent_guid));
1927         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1928         $target_type = notags(unxmlify($xml->target_type));
1929         $positive = notags(unxmlify($xml->positive));
1930         $author_signature = notags(unxmlify($xml->author_signature));
1931
1932         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1933
1934         // likes on comments not supported here and likes on photos not supported by Diaspora
1935
1936 //      if($target_type !== 'Post')
1937 //              return;
1938
1939         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1940         if(! $contact) {
1941                 logger('diaspora_like: cannot find contact: ' . $msg['author']);
1942                 return;
1943         }
1944
1945         if(! diaspora_post_allow($importer,$contact)) {
1946                 logger('diaspora_like: Ignoring this author.');
1947                 return 202;
1948         }
1949
1950         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1951                 intval($importer['uid']),
1952                 dbesc($parent_guid)
1953         );
1954         if(! count($r)) {
1955                 logger('diaspora_like: parent item not found: ' . $guid);
1956                 return;
1957         }
1958
1959         $parent_item = $r[0];
1960
1961         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1962                 intval($importer['uid']),
1963                 dbesc($guid)
1964         );
1965         if(count($r)) {
1966                 if($positive === 'true') {
1967                         logger('diaspora_like: duplicate like: ' . $guid);
1968                         return;
1969                 }
1970                 // Note: I don't think "Like" objects with positive = "false" are ever actually used
1971                 // It looks like "RelayableRetractions" are used for "unlike" instead
1972                 if($positive === 'false') {
1973                         logger('diaspora_like: received a like with positive set to "false"...ignoring');
1974 /*                      q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d",
1975                                 intval($r[0]['id']),
1976                                 intval($importer['uid'])
1977                         );*/
1978                         // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
1979                         //  send notification via proc_run()
1980                         return;
1981                 }
1982         }
1983         // Note: I don't think "Like" objects with positive = "false" are ever actually used
1984         // It looks like "RelayableRetractions" are used for "unlike" instead
1985         if($positive === 'false') {
1986                 logger('diaspora_like: received a like with positive set to "false"');
1987                 logger('diaspora_like: unlike received with no corresponding like...ignoring');
1988                 return;
1989         }
1990
1991
1992         /* How Diaspora performs "like" signature checking:
1993
1994            - If an item has been sent by the like author to the top-level post owner to relay on
1995              to the rest of the contacts on the top-level post, the top-level post owner should check
1996              the author_signature, then create a parent_author_signature before relaying the like on
1997            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1998              check only the parent_author_signature. Basically, they trust that the top-level post
1999              owner has already verified the authenticity of anything he/she sends out
2000            - In either case, the signature that get checked is the signature created by the person
2001              who sent the salmon
2002         */
2003
2004         $signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
2005         $key = $msg['key'];
2006
2007         if($parent_author_signature) {
2008                 // If a parent_author_signature exists, then we've received the like
2009                 // relayed from the top-level post owner. There's no need to check the
2010                 // author_signature if the parent_author_signature is valid
2011
2012                 $parent_author_signature = base64_decode($parent_author_signature);
2013
2014                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2015                         if (intval(get_config('system','ignore_diaspora_like_signature')))
2016                                 logger('diaspora_like: top-level owner verification failed. Proceeding anyway.');
2017                         else {
2018                                 logger('diaspora_like: top-level owner verification failed.');
2019                                 return;
2020                         }
2021                 }
2022         }
2023         else {
2024                 // If there's no parent_author_signature, then we've received the like
2025                 // from the like creator. In that case, the person is "like"ing
2026                 // our post, so he/she must be a contact of ours and his/her public key
2027                 // should be in $msg['key']
2028
2029                 $author_signature = base64_decode($author_signature);
2030
2031                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
2032                         if (intval(get_config('system','ignore_diaspora_like_signature')))
2033                                 logger('diaspora_like: like creator verification failed. Proceeding anyway');
2034                         else {
2035                                 logger('diaspora_like: like creator verification failed.');
2036                                 return;
2037                         }
2038                 }
2039         }
2040
2041         // Phew! Everything checks out. Now create an item.
2042
2043         // Find the original comment author information.
2044         // We need this to make sure we display the comment author
2045         // information (name and avatar) correctly.
2046         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
2047                 $person = $contact;
2048         else {
2049                 $person = find_diaspora_person_by_handle($diaspora_handle);
2050
2051                 if(! is_array($person)) {
2052                         logger('diaspora_like: unable to find author details');
2053                         return;
2054                 }
2055         }
2056
2057         $uri = $diaspora_handle . ':' . $guid;
2058
2059         $activity = ACTIVITY_LIKE;
2060         $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
2061         $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
2062         $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
2063         $body = $parent_item['body'];
2064
2065         $obj = <<< EOT
2066
2067         <object>
2068                 <type>$objtype</type>
2069                 <local>1</local>
2070                 <id>{$parent_item['uri']}</id>
2071                 <link>$link</link>
2072                 <title></title>
2073                 <content>$body</content>
2074         </object>
2075 EOT;
2076         $bodyverb = t('%1$s likes %2$s\'s %3$s');
2077
2078         $arr = array();
2079
2080         $arr['uri'] = $uri;
2081         $arr['uid'] = $importer['uid'];
2082         $arr['guid'] = $guid;
2083         $arr['network']  = NETWORK_DIASPORA;
2084         $arr['contact-id'] = $contact['id'];
2085         $arr['type'] = 'activity';
2086         $arr['wall'] = $parent_item['wall'];
2087         $arr['gravity'] = GRAVITY_LIKE;
2088         $arr['parent'] = $parent_item['id'];
2089         $arr['parent-uri'] = $parent_item['uri'];
2090
2091         $arr['owner-name'] = $parent_item['name'];
2092         $arr['owner-link'] = $parent_item['url'];
2093         //$arr['owner-avatar'] = $parent_item['thumb'];
2094         $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']);
2095
2096         $arr['author-name'] = $person['name'];
2097         $arr['author-link'] = $person['url'];
2098         $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
2099
2100         $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2101         $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
2102         //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
2103         $plink = '[url='.$a->get_baseurl().'/display/'.urlencode($guid).']'.$post_type.'[/url]';
2104         $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
2105
2106         $arr['app']  = 'Diaspora';
2107
2108         $arr['private'] = $parent_item['private'];
2109         $arr['verb'] = $activity;
2110         $arr['object-type'] = $objtype;
2111         $arr['object'] = $obj;
2112         $arr['visible'] = 1;
2113         $arr['unseen'] = 1;
2114         $arr['last-child'] = 0;
2115
2116         $message_id = item_store($arr);
2117
2118
2119         //if($message_id) {
2120         //      q("update item set plink = '%s' where id = %d",
2121         //              //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
2122         //              dbesc($a->get_baseurl().'/display/'.$guid),
2123         //              intval($message_id)
2124         //      );
2125         //}
2126
2127         if(! $parent_author_signature) {
2128                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2129                         intval($message_id),
2130                         dbesc($signed_data),
2131                         dbesc(base64_encode($author_signature)),
2132                         dbesc($diaspora_handle)
2133                 );
2134         }
2135
2136         // if the message isn't already being relayed, notify others
2137         // the existence of parent_author_signature means the parent_author or owner
2138         // is already relaying. The parent_item['origin'] indicates the message was created on our system
2139
2140         if(($parent_item['origin']) && (! $parent_author_signature))
2141                 proc_run('php','include/notifier.php','comment-import',$message_id);
2142
2143         return;
2144 }
2145
2146 function diaspora_retraction($importer,$xml) {
2147
2148
2149         $guid = notags(unxmlify($xml->guid));
2150         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2151         $type = notags(unxmlify($xml->type));
2152
2153         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2154         if(! $contact)
2155                 return;
2156
2157         if($type === 'Person') {
2158                 require_once('include/Contact.php');
2159                 contact_remove($contact['id']);
2160         }
2161         elseif($type === 'Post') {
2162                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2163                         dbesc('guid'),
2164                         intval($importer['uid'])
2165                 );
2166                 if(count($r)) {
2167                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2168                                 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d",
2169                                         dbesc(datetime_convert()),
2170                                         intval($r[0]['id'])
2171                                 );
2172                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2173                         }
2174                 }
2175         }
2176
2177         return 202;
2178         // NOTREACHED
2179 }
2180
2181 function diaspora_signed_retraction($importer,$xml,$msg) {
2182
2183
2184         $guid = notags(unxmlify($xml->target_guid));
2185         $diaspora_handle = notags(unxmlify($xml->sender_handle));
2186         $type = notags(unxmlify($xml->target_type));
2187         $sig = notags(unxmlify($xml->target_author_signature));
2188
2189         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
2190
2191         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2192         if(! $contact) {
2193                 logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']);
2194                 return;
2195         }
2196
2197
2198         $signed_data = $guid . ';' . $type ;
2199         $key = $msg['key'];
2200
2201         /* How Diaspora performs relayable_retraction signature checking:
2202
2203            - If an item has been sent by the item author to the top-level post owner to relay on
2204              to the rest of the contacts on the top-level post, the top-level post owner checks
2205              the author_signature, then creates a parent_author_signature before relaying the item on
2206            - If an item has been relayed on by the top-level post owner, the contacts who receive it
2207              check only the parent_author_signature. Basically, they trust that the top-level post
2208              owner has already verified the authenticity of anything he/she sends out
2209            - In either case, the signature that get checked is the signature created by the person
2210              who sent the salmon
2211         */
2212
2213         if($parent_author_signature) {
2214
2215                 $parent_author_signature = base64_decode($parent_author_signature);
2216
2217                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2218                         logger('diaspora_signed_retraction: top-level post owner verification failed');
2219                         return;
2220                 }
2221
2222         }
2223         else {
2224
2225                 $sig_decode = base64_decode($sig);
2226
2227                 if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
2228                         logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
2229                         return;
2230                 }
2231         }
2232
2233         if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
2234                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2235                         dbesc($guid),
2236                         intval($importer['uid'])
2237                 );
2238                 if(count($r)) {
2239                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2240                                 q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d",
2241                                         dbesc(datetime_convert()),
2242                                         dbesc(datetime_convert()),
2243                                         intval($r[0]['id'])
2244                                 );
2245                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2246
2247                                 // Now check if the retraction needs to be relayed by us
2248                                 //
2249                                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2250                                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2251                                 // The only item with `parent` and `id` as the parent id is the parent item.
2252                                 $p = q("select origin from item where parent = %d and id = %d limit 1",
2253                                         $r[0]['parent'],
2254                                         $r[0]['parent']
2255                                 );
2256                                 if(count($p)) {
2257                                         if(($p[0]['origin']) && (! $parent_author_signature)) {
2258                                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2259                                                         $r[0]['id'],
2260                                                         dbesc($signed_data),
2261                                                         dbesc($sig),
2262                                                         dbesc($diaspora_handle)
2263                                                 );
2264
2265                                                 // the existence of parent_author_signature would have meant the parent_author or owner
2266                                                 // is already relaying.
2267                                                 logger('diaspora_signed_retraction: relaying relayable_retraction');
2268
2269                                                 proc_run('php','include/notifier.php','drop',$r[0]['id']);
2270                                         }
2271                                 }
2272                         }
2273                 }
2274         }
2275         else
2276                 logger('diaspora_signed_retraction: unknown type: ' . $type);
2277
2278         return 202;
2279         // NOTREACHED
2280 }
2281
2282 function diaspora_profile($importer,$xml,$msg) {
2283
2284         $a = get_app();
2285         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2286
2287
2288         if($diaspora_handle != $msg['author']) {
2289                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
2290                 return 202;
2291         }
2292
2293         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2294         if(! $contact)
2295                 return;
2296
2297         if($contact['blocked']) {
2298                 logger('diaspora_post: Ignoring this author.');
2299                 return 202;
2300         }
2301
2302         $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
2303         $image_url = unxmlify($xml->image_url);
2304         $birthday = unxmlify($xml->birthday);
2305         $location = diaspora2bb(unxmlify($xml->location));
2306         $about = diaspora2bb(unxmlify($xml->bio));
2307         $gender = unxmlify($xml->gender);
2308         $tags = unxmlify($xml->tag_string);
2309
2310         $tags = explode("#", $tags);
2311
2312         $keywords = array();
2313         foreach ($tags as $tag) {
2314                 $tag = trim(strtolower($tag));
2315                 if ($tag != "")
2316                         $keywords[] = $tag;
2317         }
2318
2319         $keywords = implode(", ", $keywords);
2320
2321         $handle_parts = explode("@", $diaspora_handle);
2322         if($name === '') {
2323                 $name = $handle_parts[0];
2324         }
2325
2326         if( preg_match("|^https?://|", $image_url) === 0) {
2327                 $image_url = "http://" . $handle_parts[1] . $image_url;
2328         }
2329
2330 /*      $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
2331                 intval($importer['uid']),
2332                 intval($contact['id'])
2333         );
2334         $oldphotos = ((count($r)) ? $r : null);*/
2335
2336         require_once('include/Photo.php');
2337
2338         $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
2339
2340         // Generic birthday. We don't know the timezone. The year is irrelevant.
2341
2342         $birthday = str_replace('1000','1901',$birthday);
2343
2344         $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
2345
2346         // this is to prevent multiple birthday notifications in a single year
2347         // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2348
2349         if(substr($birthday,5) === substr($contact['bd'],5))
2350                 $birthday = $contact['bd'];
2351
2352         // TODO: update name on item['author-name'] if the name changed. See consume_feed()
2353         // Not doing this currently because D* protocol is scheduled for revision soon.
2354
2355         $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2356                 dbesc($name),
2357                 dbesc(datetime_convert()),
2358                 dbesc($images[0]),
2359                 dbesc($images[1]),
2360                 dbesc($images[2]),
2361                 dbesc(datetime_convert()),
2362                 dbesc($birthday),
2363                 dbesc($location),
2364                 dbesc($about),
2365                 dbesc($keywords),
2366                 dbesc($gender),
2367                 intval($contact['id']),
2368                 intval($importer['uid'])
2369         );
2370
2371         if (unxmlify($xml->searchable) == "true") {
2372                 require_once('include/socgraph.php');
2373                 poco_check($contact['url'], $name, NETWORK_DIASPORA, $images[0], $about, $location, $gender, $keywords, "",
2374                         datetime_convert(), $contact['id'], $importer['uid']);
2375         }
2376
2377         $profileurl = "";
2378         $author = q("SELECT * FROM `unique_contacts` WHERE `url`='%s' LIMIT 1",
2379                         dbesc(normalise_link($contact['url'])));
2380
2381         if (count($author) == 0) {
2382                 q("INSERT INTO `unique_contacts` (`url`, `name`, `avatar`, `location`, `about`) VALUES ('%s', '%s', '%s', '%s', '%s')",
2383                         dbesc(normalise_link($contact['url'])), dbesc($name), dbesc($location), dbesc($about), dbesc($images[0]));
2384
2385                 $author = q("SELECT id FROM unique_contacts WHERE url='%s' LIMIT 1",
2386                         dbesc(normalise_link($contact['url'])));
2387         } else if (normalise_link($contact['url']).$name.$location.$about != normalise_link($author[0]["url"]).$author[0]["name"].$author[0]["location"].$author[0]["about"]) {
2388                 q("UPDATE unique_contacts SET name = '%s', avatar = '%s', `location` = '%s', `about` = '%s' WHERE url = '%s'",
2389                 dbesc($name), dbesc($images[0]), dbesc($location), dbesc($about), dbesc(normalise_link($contact['url'])));
2390         }
2391
2392 /*      if($r) {
2393                 if($oldphotos) {
2394                         foreach($oldphotos as $ph) {
2395                                 q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
2396                                         intval($importer['uid']),
2397                                         intval($contact['id']),
2398                                         dbesc($ph['resource-id'])
2399                                 );
2400                         }
2401                 }
2402         }       */
2403
2404         return;
2405
2406 }
2407
2408 function diaspora_share($me,$contact) {
2409         $a = get_app();
2410         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2411         $theiraddr = $contact['addr'];
2412
2413         $tpl = get_markup_template('diaspora_share.tpl');
2414         $msg = replace_macros($tpl, array(
2415                 '$sender' => $myaddr,
2416                 '$recipient' => $theiraddr
2417         ));
2418
2419         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2420         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2421
2422         return(diaspora_transmit($owner,$contact,$slap, false));
2423 }
2424
2425 function diaspora_unshare($me,$contact) {
2426
2427         $a = get_app();
2428         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2429
2430         $tpl = get_markup_template('diaspora_retract.tpl');
2431         $msg = replace_macros($tpl, array(
2432                 '$guid'   => $me['guid'],
2433                 '$type'   => 'Person',
2434                 '$handle' => $myaddr
2435         ));
2436
2437         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2438         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2439
2440         return(diaspora_transmit($owner,$contact,$slap, false));
2441
2442 }
2443
2444
2445 function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
2446
2447         $a = get_app();
2448         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2449         $theiraddr = $contact['addr'];
2450
2451         $images = array();
2452
2453         $title = $item['title'];
2454         $body = $item['body'];
2455
2456 /*
2457         // We're trying to match Diaspora's split message/photo protocol but
2458         // all the photos are displayed on D* as links and not img's - even
2459         // though we're sending pretty much precisely what they send us when
2460         // doing the same operation.
2461         // Commented out for now, we'll use bb2diaspora to convert photos to markdown
2462         // which seems to get through intact.
2463
2464         $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
2465         if($cnt) {
2466                 foreach($matches as $mtch) {
2467                         $detail = array();
2468                         $detail['str'] = $mtch[0];
2469                         $detail['path'] = dirname($mtch[1]) . '/';
2470                         $detail['file'] = basename($mtch[1]);
2471                         $detail['guid'] = $item['guid'];
2472                         $detail['handle'] = $myaddr;
2473                         $images[] = $detail;
2474                         $body = str_replace($detail['str'],$mtch[1],$body);
2475                 }
2476         }
2477 */
2478
2479         //if(strlen($title))
2480         //      $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
2481
2482         // convert to markdown
2483         $body = xmlify(html_entity_decode(bb2diaspora($body)));
2484         //$body = bb2diaspora($body);
2485
2486         // Adding the title
2487         if(strlen($title))
2488                 $body = "## ".html_entity_decode($title)."\n\n".$body;
2489
2490         if($item['attach']) {
2491                 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
2492                 if(cnt) {
2493                         $body .= "\n" . t('Attachments:') . "\n";
2494                         foreach($matches as $mtch) {
2495                                 $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
2496                         }
2497                 }
2498         }
2499
2500
2501         $public = (($item['private']) ? 'false' : 'true');
2502
2503         require_once('include/datetime.php');
2504         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2505
2506         // Detect a share element and do a reshare
2507         // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb
2508         if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) {
2509                 $tpl = get_markup_template('diaspora_reshare.tpl');
2510                 $msg = replace_macros($tpl, array(
2511                         '$root_handle' => xmlify($ret['root_handle']),
2512                         '$root_guid' => $ret['root_guid'],
2513                         '$guid' => $item['guid'],
2514                         '$handle' => xmlify($myaddr),
2515                         '$public' => $public,
2516                         '$created' => $created,
2517                         '$provider' => $item["app"]
2518                 ));
2519         } else {
2520                 $tpl = get_markup_template('diaspora_post.tpl');
2521                 $msg = replace_macros($tpl, array(
2522                         '$body' => $body,
2523                         '$guid' => $item['guid'],
2524                         '$handle' => xmlify($myaddr),
2525                         '$public' => $public,
2526                         '$created' => $created,
2527                         '$provider' => $item["app"]
2528                 ));
2529         }
2530
2531         logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA);
2532
2533         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2534         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2535
2536         $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
2537
2538         logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG);
2539
2540         if(count($images)) {
2541                 diaspora_send_images($item,$owner,$contact,$images,$public_batch);
2542         }
2543
2544         return $return_code;
2545 }
2546
2547 function diaspora_is_reshare($body) {
2548         $body = trim($body);
2549
2550         // Skip if it isn't a pure repeated messages
2551         // Does it start with a share?
2552         if (strpos($body, "[share") > 0)
2553                 return(false);
2554
2555         // Does it end with a share?
2556         if (strlen($body) > (strrpos($body, "[/share]") + 8))
2557                 return(false);
2558
2559         $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2560         // Skip if there is no shared message in there
2561         if ($body == $attributes)
2562                 return(false);
2563
2564         $profile = "";
2565         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2566         if ($matches[1] != "")
2567                 $profile = $matches[1];
2568
2569         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2570         if ($matches[1] != "")
2571                 $profile = $matches[1];
2572
2573         $ret= array();
2574
2575         $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2576         if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2577                 return(false);
2578
2579         $link = "";
2580         preg_match("/link='(.*?)'/ism", $attributes, $matches);
2581         if ($matches[1] != "")
2582                 $link = $matches[1];
2583
2584         preg_match('/link="(.*?)"/ism', $attributes, $matches);
2585         if ($matches[1] != "")
2586                 $link = $matches[1];
2587
2588         $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2589         if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
2590                 return(false);
2591
2592         return($ret);
2593 }
2594
2595 function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
2596         $a = get_app();
2597         if(! count($images))
2598                 return;
2599         $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
2600
2601         $tpl = get_markup_template('diaspora_photo.tpl');
2602         foreach($images as $image) {
2603                 if(! stristr($image['path'],$mysite))
2604                         continue;
2605                 $resource = str_replace('.jpg','',$image['file']);
2606                 $resource = substr($resource,0,strpos($resource,'-'));
2607
2608                 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
2609                         dbesc($resource),
2610                         intval($owner['uid'])
2611                 );
2612                 if(! count($r))
2613                         continue;
2614                 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
2615                 $msg = replace_macros($tpl,array(
2616                         '$path' => xmlify($image['path']),
2617                         '$filename' => xmlify($image['file']),
2618                         '$msg_guid' => xmlify($image['guid']),
2619                         '$guid' => xmlify($r[0]['guid']),
2620                         '$handle' => xmlify($image['handle']),
2621                         '$public' => xmlify($public),
2622                         '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
2623                 ));
2624
2625
2626                 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
2627                 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2628                 //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2629
2630                 diaspora_transmit($owner,$contact,$slap,$public_batch);
2631         }
2632
2633 }
2634
2635 function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
2636
2637         $a = get_app();
2638         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2639 //      $theiraddr = $contact['addr'];
2640
2641         // Diaspora doesn't support threaded comments, but some
2642         // versions of Diaspora (i.e. Diaspora-pistos) support
2643         // likes on comments
2644         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2645                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2646                         dbesc($item['thr-parent'])
2647                       );
2648         }
2649         else {
2650                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2651                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2652                 // The only item with `parent` and `id` as the parent id is the parent item.
2653                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2654                         intval($item['parent']),
2655                         intval($item['parent'])
2656                 );
2657         }
2658         if(count($p))
2659                 $parent = $p[0];
2660         else
2661                 return;
2662
2663         if($item['verb'] === ACTIVITY_LIKE) {
2664                 $tpl = get_markup_template('diaspora_like.tpl');
2665                 $like = true;
2666                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2667 //              $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post');
2668 //              $positive = (($item['deleted']) ? 'false' : 'true');
2669                 $positive = 'true';
2670
2671                 if(($item['deleted']))
2672                         logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
2673         }
2674         else {
2675                 $tpl = get_markup_template('diaspora_comment.tpl');
2676                 $like = false;
2677         }
2678
2679         $text = html_entity_decode(bb2diaspora($item['body']));
2680
2681         // sign it
2682
2683         if($like)
2684                 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr;
2685         else
2686                 $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr;
2687
2688         $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2689
2690         $msg = replace_macros($tpl,array(
2691                 '$guid' => xmlify($item['guid']),
2692                 '$parent_guid' => xmlify($parent['guid']),
2693                 '$target_type' =>xmlify($target_type),
2694                 '$authorsig' => xmlify($authorsig),
2695                 '$body' => xmlify($text),
2696                 '$positive' => xmlify($positive),
2697                 '$handle' => xmlify($myaddr)
2698         ));
2699
2700         logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
2701
2702         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2703         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2704
2705         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2706 }
2707
2708
2709 function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
2710
2711
2712         $a = get_app();
2713         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2714 //      $theiraddr = $contact['addr'];
2715
2716         $body = $item['body'];
2717         $text = html_entity_decode(bb2diaspora($body));
2718
2719         // Diaspora doesn't support threaded comments, but some
2720         // versions of Diaspora (i.e. Diaspora-pistos) support
2721         // likes on comments
2722         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2723                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2724                         dbesc($item['thr-parent'])
2725                       );
2726         }
2727         else {
2728                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2729                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2730                 // The only item with `parent` and `id` as the parent id is the parent item.
2731                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2732                        intval($item['parent']),
2733                        intval($item['parent'])
2734                       );
2735         }
2736         if(count($p))
2737                 $parent = $p[0];
2738         else
2739                 return;
2740
2741         $like = false;
2742         $relay_retract = false;
2743         $sql_sign_id = 'iid';
2744         if( $item['deleted']) {
2745                 $relay_retract = true;
2746
2747                 $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2748
2749                 $sql_sign_id = 'retract_iid';
2750                 $tpl = get_markup_template('diaspora_relayable_retraction.tpl');
2751         }
2752         elseif($item['verb'] === ACTIVITY_LIKE) {
2753                 $like = true;
2754
2755                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2756 //              $positive = (($item['deleted']) ? 'false' : 'true');
2757                 $positive = 'true';
2758
2759                 $tpl = get_markup_template('diaspora_like_relay.tpl');
2760         }
2761         else { // item is a comment
2762                 $tpl = get_markup_template('diaspora_comment_relay.tpl');
2763         }
2764
2765
2766         // fetch the original signature if the relayable was created by a Diaspora
2767         // or DFRN user. Relayables for other networks are not supported.
2768
2769 /*      $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
2770                 intval($item['id'])
2771         );
2772         if(count($r)) {
2773                 $orig_sign = $r[0];
2774                 $signed_text = $orig_sign['signed_text'];
2775                 $authorsig = $orig_sign['signature'];
2776                 $handle = $orig_sign['signer'];
2777         }
2778         else {
2779
2780                 // Author signature information (for likes, comments, and retractions of likes or comments,
2781                 // whether from Diaspora or Friendica) must be placed in the `sign` table before this
2782                 // function is called
2783                 logger('diaspora_send_relay: original author signature not found, cannot send relayable');
2784                 return;
2785         }*/
2786
2787         /* Since the author signature is only checked by the parent, not by the relay recipients,
2788          * I think it may not be necessary for us to do so much work to preserve all the original
2789          * signatures. The important thing that Diaspora DOES need is the original creator's handle.
2790          * Let's just generate that and forget about all the original author signature stuff.
2791          *
2792          * Note: this might be more of an problem if we want to support likes on comments for older
2793          * versions of Diaspora (diaspora-pistos), but since there are a number of problems with
2794          * doing that, let's ignore it for now.
2795          *
2796          * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't
2797          * been done yet
2798          */
2799
2800         $handle = diaspora_handle_from_contact($item['contact-id']);
2801         if(! $handle)
2802                 return;
2803
2804
2805         if($relay_retract)
2806                 $sender_signed_text = $item['guid'] . ';' . $target_type;
2807         elseif($like)
2808                 $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle;
2809         else
2810                 $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle;
2811
2812         // Sign the relayable with the top-level owner's signature
2813         //
2814         // We'll use the $sender_signed_text that we just created, instead of the $signed_text
2815         // stored in the database, because that provides the best chance that Diaspora will
2816         // be able to reconstruct the signed text the same way we did. This is particularly a
2817         // concern for the comment, whose signed text includes the text of the comment. The
2818         // smallest change in the text of the comment, including removing whitespace, will
2819         // make the signature verification fail. Since we translate from BB code to Diaspora's
2820         // markup at the top of this function, which is AFTER we placed the original $signed_text
2821         // in the database, it's hazardous to trust the original $signed_text.
2822
2823         $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256'));
2824
2825         $msg = replace_macros($tpl,array(
2826                 '$guid' => xmlify($item['guid']),
2827                 '$parent_guid' => xmlify($parent['guid']),
2828                 '$target_type' =>xmlify($target_type),
2829                 '$authorsig' => xmlify($authorsig),
2830                 '$parentsig' => xmlify($parentauthorsig),
2831                 '$body' => xmlify($text),
2832                 '$positive' => xmlify($positive),
2833                 '$handle' => xmlify($handle)
2834         ));
2835
2836         logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
2837
2838
2839         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2840         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2841
2842         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2843
2844 }
2845
2846
2847
2848 function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
2849
2850         $a = get_app();
2851         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2852
2853         // Check whether the retraction is for a top-level post or whether it's a relayable
2854         if( $item['uri'] !== $item['parent-uri'] ) {
2855
2856                 $tpl = get_markup_template('diaspora_relay_retraction.tpl');
2857                 $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2858         }
2859         else {
2860
2861                 $tpl = get_markup_template('diaspora_signed_retract.tpl');
2862                 $target_type = 'StatusMessage';
2863         }
2864
2865         $signed_text = $item['guid'] . ';' . $target_type;
2866
2867         $msg = replace_macros($tpl, array(
2868                 '$guid'   => xmlify($item['guid']),
2869                 '$type'   => xmlify($target_type),
2870                 '$handle' => xmlify($myaddr),
2871                 '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
2872         ));
2873
2874         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2875         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2876
2877         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2878 }
2879
2880 function diaspora_send_mail($item,$owner,$contact) {
2881
2882         $a = get_app();
2883         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2884
2885         $r = q("select * from conv where id = %d and uid = %d limit 1",
2886                 intval($item['convid']),
2887                 intval($item['uid'])
2888         );
2889
2890         if(! count($r)) {
2891                 logger('diaspora_send_mail: conversation not found.');
2892                 return;
2893         }
2894         $cnv = $r[0];
2895
2896         $conv = array(
2897                 'guid' => xmlify($cnv['guid']),
2898                 'subject' => xmlify($cnv['subject']),
2899                 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
2900                 'diaspora_handle' => xmlify($cnv['creator']),
2901                 'participant_handles' => xmlify($cnv['recips'])
2902         );
2903
2904         $body = bb2diaspora($item['body']);
2905         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2906
2907         $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';'
2908                 . $created . ';' . $myaddr . ';' . $cnv['guid'];
2909
2910         $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2911
2912         $msg = array(
2913                 'guid' => xmlify($item['guid']),
2914                 'parent_guid' => xmlify($cnv['guid']),
2915                 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
2916                 'author_signature' => xmlify($sig),
2917                 'text' => xmlify($body),
2918                 'created_at' => xmlify($created),
2919                 'diaspora_handle' => xmlify($myaddr),
2920                 'conversation_guid' => xmlify($cnv['guid'])
2921         );
2922
2923         if($item['reply']) {
2924                 $tpl = get_markup_template('diaspora_message.tpl');
2925                 $xmsg = replace_macros($tpl, array('$msg' => $msg));
2926         }
2927         else {
2928                 $conv['messages'] = array($msg);
2929                 $tpl = get_markup_template('diaspora_conversation.tpl');
2930                 $xmsg = replace_macros($tpl, array('$conv' => $conv));
2931         }
2932
2933         logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
2934
2935         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
2936         //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false));
2937
2938         return(diaspora_transmit($owner,$contact,$slap,false));
2939
2940
2941 }
2942
2943 function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) {
2944
2945         $enabled = intval(get_config('system','diaspora_enabled'));
2946         if(! $enabled) {
2947                 return 200;
2948         }
2949
2950         $a = get_app();
2951         $logid = random_string(4);
2952         $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
2953         if(! $dest_url) {
2954                 logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
2955                 return 0;
2956         }
2957
2958         logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
2959
2960         if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) {
2961                 $return_code = 0;
2962         }
2963         else {
2964                 if (!intval(get_config('system','diaspora_test'))) {
2965                         post_url($dest_url . '/', $slap);
2966                         $return_code = $a->get_curl_code();
2967                 } else {
2968                         logger('diaspora_transmit: test_mode');
2969                         return 200;
2970                 }
2971         }
2972
2973         logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
2974
2975         if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
2976                 logger('diaspora_transmit: queue message');
2977
2978                 $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
2979                         intval($contact['id']),
2980                         dbesc(NETWORK_DIASPORA),
2981                         dbesc($slap),
2982                         intval($public_batch)
2983                 );
2984                 if(count($r)) {
2985                         logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
2986                 }
2987                 else {
2988                         // queue message for redelivery
2989                         add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
2990                 }
2991         }
2992
2993
2994         return(($return_code) ? $return_code : (-1));
2995 }
2996
2997