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