include/diaspora.php

   1 <?php
   2
   3 require_once('include/crypto.php');
   4 require_once('include/items.php');
   5 require_once('include/bb2diaspora.php');
   6 require_once('include/contact_selectors.php');
   7 require_once('include/queue_fn.php');
   8 require_once('include/lock.php');
   9 require_once('include/threads.php');
  10 require_once('mod/share.php');
  11
  12 function diaspora_dispatch_public($msg) {
  13
  14         $enabled = intval(get_config('system','diaspora_enabled'));
  15         if(! $enabled) {
  16                 logger('mod-diaspora: disabled');
  17                 return;
  18         }
  19
  20         $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
  21                 ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' )
  22                 AND `account_expired` = 0 AND `account_removed` = 0 ",
  23                 dbesc(NETWORK_DIASPORA),
  24                 dbesc($msg['author'])
  25         );
  26         if(count($r)) {
  27                 foreach($r as $rr) {
  28                         logger('diaspora_public: delivering to: ' . $rr['username']);
  29                         diaspora_dispatch($rr,$msg);
  30                 }
  31         }
  32         else
  33                 logger('diaspora_public: no subscribers');
  34 }
  35
  36
  37
  38 function diaspora_dispatch($importer,$msg,$attempt=1) {
  39
  40         $ret = 0;
  41
  42         $enabled = intval(get_config('system','diaspora_enabled'));
  43         if(! $enabled) {
  44                 logger('mod-diaspora: disabled');
  45                 return;
  46         }
  47
  48         // php doesn't like dashes in variable names
  49
  50         $msg['message'] = str_replace(
  51                         array('<activity_streams-photo>','</activity_streams-photo>'),
  52                         array('<asphoto>','</asphoto>'),
  53                         $msg['message']);
  54
  55
  56         $parsed_xml = parse_xml_string($msg['message'],false);
  57
  58         $xmlbase = $parsed_xml->post;
  59
  60         logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
  61
  62
  63         if($xmlbase->request) {
  64                 $ret = diaspora_request($importer,$xmlbase->request);
  65         }
  66         elseif($xmlbase->status_message) {
  67                 $ret = diaspora_post($importer,$xmlbase->status_message,$msg);
  68         }
  69         elseif($xmlbase->profile) {
  70                 $ret = diaspora_profile($importer,$xmlbase->profile,$msg);
  71         }
  72         elseif($xmlbase->comment) {
  73                 $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
  74         }
  75         elseif($xmlbase->like) {
  76                 $ret = diaspora_like($importer,$xmlbase->like,$msg);
  77         }
  78         elseif($xmlbase->asphoto) {
  79                 $ret = diaspora_asphoto($importer,$xmlbase->asphoto,$msg);
  80         }
  81         elseif($xmlbase->reshare) {
  82                 $ret = diaspora_reshare($importer,$xmlbase->reshare,$msg);
  83         }
  84         elseif($xmlbase->retraction) {
  85                 $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
  86         }
  87         elseif($xmlbase->signed_retraction) {
  88                 $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
  89         }
  90         elseif($xmlbase->relayable_retraction) {
  91                 $ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg);
  92         }
  93         elseif($xmlbase->photo) {
  94                 $ret = diaspora_photo($importer,$xmlbase->photo,$msg,$attempt);
  95         }
  96         elseif($xmlbase->conversation) {
  97                 $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
  98         }
  99         elseif($xmlbase->message) {
 100                 $ret = diaspora_message($importer,$xmlbase->message,$msg);
 101         }
 102         else {
 103                 logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
 104         }
 105         return $ret;
 106 }
 107
 108 function diaspora_handle_from_contact($contact_id) {
 109         $handle = False;
 110
 111         logger("diaspora_handle_from_contact: contact id is " . $contact_id, LOGGER_DEBUG);
 112
 113         $r = q("SELECT network, addr, self, url, nick FROM contact WHERE id = %d",
 114                intval($contact_id)
 115         );
 116         if($r) {
 117                 $contact = $r[0];
 118
 119                 logger("diaspora_handle_from_contact: contact 'self' = " . $contact['self'] . " 'url' = " . $contact['url'], LOGGER_DEBUG);
 120
 121                 if($contact['network'] === NETWORK_DIASPORA) {
 122                         $handle = $contact['addr'];
 123
 124 //                      logger("diaspora_handle_from_contact: contact id is a Diaspora person, handle = " . $handle, LOGGER_DEBUG);
 125                 }
 126                 elseif(($contact['network'] === NETWORK_DFRN) || ($contact['self'] == 1)) {
 127                         $baseurl_start = strpos($contact['url'],'://') + 3;
 128                         $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
 129                         $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
 130                         $handle = $contact['nick'] . '@' . $baseurl;
 131
 132 //                      logger("diaspora_handle_from_contact: contact id is a DFRN person, handle = " . $handle, LOGGER_DEBUG);
 133                 }
 134         }
 135
 136         return $handle;
 137 }
 138
 139 function diaspora_get_contact_by_handle($uid,$handle) {
 140         $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
 141                 dbesc(NETWORK_DIASPORA),
 142                 intval($uid),
 143                 dbesc($handle)
 144         );
 145         if($r && count($r))
 146                 return $r[0];
 147
 148         $handle_parts = explode("@", $handle);
 149         $nurl_sql = '%%://' . $handle_parts[1] . '%%/profile/' . $handle_parts[0];
 150         $r = q("SELECT * FROM contact WHERE network = '%s' AND uid = %d AND nurl LIKE '%s' LIMIT 1",
 151                dbesc(NETWORK_DFRN),
 152                intval($uid),
 153                dbesc($nurl_sql)
 154         );
 155         if($r && count($r))
 156                 return $r[0];
 157
 158         return false;
 159 }
 160
 161 function find_diaspora_person_by_handle($handle) {
 162
 163         $person = false;
 164         $update = false;
 165         $got_lock = false;
 166
 167         $endlessloop = 0;
 168         $maxloops = 10;
 169
 170         do {
 171                 $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
 172                         dbesc(NETWORK_DIASPORA),
 173                         dbesc($handle)
 174                 );
 175                 if(count($r)) {
 176                         $person = $r[0];
 177                         logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
 178
 179                         // update record occasionally so it doesn't get stale
 180                         $d = strtotime($person['updated'] . ' +00:00');
 181                         if($d < strtotime('now - 14 days'))
 182                                 $update = true;
 183                 }
 184
 185
 186                 // FETCHING PERSON INFORMATION FROM REMOTE SERVER
 187                 //
 188                 // If the person isn't in our 'fcontact' table, or if he/she is but
 189                 // his/her information hasn't been updated for more than 14 days, then
 190                 // we want to fetch the person's information from the remote server.
 191                 //
 192                 // Note that $person isn't changed by this block of code unless the
 193                 // person's information has been successfully fetched from the remote
 194                 // server. So if $person was 'false' to begin with (because he/she wasn't
 195                 // in the local cache), it'll stay false, and if $person held the local
 196                 // cache information to begin with, it'll keep that information. That way
 197                 // if there's a problem with the remote fetch, we can at least use our
 198                 // cached information--it's better than nothing.
 199
 200                 if((! $person) || ($update))  {
 201                         // Lock the function to prevent race conditions if multiple items
 202                         // come in at the same time from a person who doesn't exist in
 203                         // fcontact
 204                         //
 205                         // Don't loop forever. On the last loop, try to create the contact
 206                         // whether the function is locked or not. Maybe the locking thread
 207                         // has died or something. At any rate, a duplicate in 'fcontact'
 208                         // is a much smaller problem than a deadlocked thread
 209                         $got_lock = lock_function('find_diaspora_person_by_handle', false);
 210                         if(($endlessloop + 1) >= $maxloops)
 211                                 $got_lock = true;
 212
 213                         if($got_lock) {
 214                                 logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG);
 215                                 require_once('include/Scrape.php');
 216                                 $r = probe_url($handle, PROBE_DIASPORA);
 217
 218                                 // Note that Friendica contacts can return a "Diaspora person"
 219                                 // if Diaspora connectivity is enabled on their server
 220                                 if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
 221                                         add_fcontact($r,$update);
 222                                         $person = ($r);
 223                                 }
 224
 225                                 unlock_function('find_diaspora_person_by_handle');
 226                         }
 227                         else {
 228                                 logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG);
 229                                 if(! $person)
 230                                         block_on_function_lock('find_diaspora_person_by_handle');
 231                         }
 232                 }
 233         } while((! $person) && (! $got_lock) && (++$endlessloop < $maxloops));
 234         // We need to try again if the person wasn't in 'fcontact' but the function was locked.
 235         // The fact that the function was locked may mean that another process was creating the
 236         // person's record. It could also mean another process was creating or updating an unrelated
 237         // person.
 238         //
 239         // At any rate, we need to keep trying until we've either got the person or had a chance to
 240         // try to fetch his/her remote information. But we don't want to block on locking the
 241         // function, because if the other process is creating the record, then when we acquire the lock
 242         // we'll dive right into creating another, duplicate record. We DO want to at least wait
 243         // until the lock is released, so we don't flood the database with requests.
 244         //
 245         // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since
 246         // we do have some information for the person
 247
 248         return $person;
 249 }
 250
 251
 252 function get_diaspora_key($uri) {
 253         logger('Fetching diaspora key for: ' . $uri);
 254
 255         $r = find_diaspora_person_by_handle($uri);
 256         if($r)
 257                 return $r['pubkey'];
 258         return '';
 259 }
 260
 261
 262 function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
 263         $a = get_app();
 264
 265         logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
 266
 267
 268         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 269
 270 //      $b64_data = base64_encode($msg);
 271 //      $b64url_data = base64url_encode($b64_data);
 272
 273         $b64url_data = base64url_encode($msg);
 274
 275         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 276
 277         $type = 'application/xml';
 278         $encoding = 'base64url';
 279         $alg = 'RSA-SHA256';
 280
 281         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 282                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 283
 284         $signature = rsa_sign($signable_data,$prvkey);
 285         $sig = base64url_encode($signature);
 286
 287 $magic_env = <<< EOT
 288 <?xml version='1.0' encoding='UTF-8'?>
 289 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 290   <header>
 291     <author_id>$handle</author_id>
 292   </header>
 293   <me:env>
 294     <me:encoding>base64url</me:encoding>
 295     <me:alg>RSA-SHA256</me:alg>
 296     <me:data type="application/xml">$data</me:data>
 297     <me:sig>$sig</me:sig>
 298   </me:env>
 299 </diaspora>
 300 EOT;
 301
 302         logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 303         return $magic_env;
 304
 305 }
 306
 307
 308
 309
 310 function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
 311         $a = get_app();
 312
 313         if($public)
 314                 return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
 315
 316         logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
 317
 318         // without a public key nothing will work
 319
 320         if(! $pubkey) {
 321                 logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
 322                 return '';
 323         }
 324
 325         $inner_aes_key = random_string(32);
 326         $b_inner_aes_key = base64_encode($inner_aes_key);
 327         $inner_iv = random_string(16);
 328         $b_inner_iv = base64_encode($inner_iv);
 329
 330         $outer_aes_key = random_string(32);
 331         $b_outer_aes_key = base64_encode($outer_aes_key);
 332         $outer_iv = random_string(16);
 333         $b_outer_iv = base64_encode($outer_iv);
 334
 335         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 336
 337         $padded_data = pkcs5_pad($msg,16);
 338         $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
 339
 340         $b64_data = base64_encode($inner_encrypted);
 341
 342
 343         $b64url_data = base64url_encode($b64_data);
 344         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 345
 346         $type = 'application/xml';
 347         $encoding = 'base64url';
 348         $alg = 'RSA-SHA256';
 349
 350         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 351                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 352
 353         $signature = rsa_sign($signable_data,$prvkey);
 354         $sig = base64url_encode($signature);
 355
 356 $decrypted_header = <<< EOT
 357 <decrypted_header>
 358   <iv>$b_inner_iv</iv>
 359   <aes_key>$b_inner_aes_key</aes_key>
 360   <author_id>$handle</author_id>
 361 </decrypted_header>
 362 EOT;
 363
 364         $decrypted_header = pkcs5_pad($decrypted_header,16);
 365
 366         $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
 367
 368         $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
 369
 370         $encrypted_outer_key_bundle = '';
 371         openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
 372
 373         $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
 374
 375         logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
 376
 377         $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
 378                 'ciphertext' => base64_encode($ciphertext)));
 379         $cipher_json = base64_encode($encrypted_header_json_object);
 380
 381         $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
 382
 383 $magic_env = <<< EOT
 384 <?xml version='1.0' encoding='UTF-8'?>
 385 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 386   $encrypted_header
 387   <me:env>
 388     <me:encoding>base64url</me:encoding>
 389     <me:alg>RSA-SHA256</me:alg>
 390     <me:data type="application/xml">$data</me:data>
 391     <me:sig>$sig</me:sig>
 392   </me:env>
 393 </diaspora>
 394 EOT;
 395
 396         logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 397         return $magic_env;
 398
 399 }
 400
 401 /**
 402  *
 403  * diaspora_decode($importer,$xml)
 404  *   array $importer -> from user table
 405  *   string $xml -> urldecoded Diaspora salmon
 406  *
 407  * Returns array
 408  * 'message' -> decoded Diaspora XML message
 409  * 'author' -> author diaspora handle
 410  * 'key' -> author public key (converted to pkcs#8)
 411  *
 412  * Author and key are used elsewhere to save a lookup for verifying replies and likes
 413  */
 414
 415
 416 function diaspora_decode($importer,$xml) {
 417
 418         $public = false;
 419         $basedom = parse_xml_string($xml);
 420
 421         $children = $basedom->children('https://joindiaspora.com/protocol');
 422
 423         if($children->header) {
 424                 $public = true;
 425                 $author_link = str_replace('acct:','',$children->header->author_id);
 426         }
 427         else {
 428
 429                 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
 430
 431                 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
 432                 $ciphertext = base64_decode($encrypted_header->ciphertext);
 433
 434                 $outer_key_bundle = '';
 435                 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
 436
 437                 $j_outer_key_bundle = json_decode($outer_key_bundle);
 438
 439                 $outer_iv = base64_decode($j_outer_key_bundle->iv);
 440                 $outer_key = base64_decode($j_outer_key_bundle->key);
 441
 442                 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
 443
 444
 445                 $decrypted = pkcs5_unpad($decrypted);
 446
 447                 /**
 448                  * $decrypted now contains something like
 449                  *
 450                  *  <decrypted_header>
 451                  *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
 452                  *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 453
 454 ***** OBSOLETE
 455
 456                  *     <author>
 457                  *       <name>Ryan Hughes</name>
 458                  *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
 459                  *     </author>
 460
 461 ***** CURRENT
 462
 463                  *     <author_id>galaxor@diaspora.priateship.org</author_id>
 464
 465 ***** END DIFFS
 466
 467                  *  </decrypted_header>
 468                  */
 469
 470                 logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
 471                 $idom = parse_xml_string($decrypted,false);
 472
 473                 $inner_iv = base64_decode($idom->iv);
 474                 $inner_aes_key = base64_decode($idom->aes_key);
 475
 476                 $author_link = str_replace('acct:','',$idom->author_id);
 477
 478         }
 479
 480         $dom = $basedom->children(NAMESPACE_SALMON_ME);
 481
 482         // figure out where in the DOM tree our data is hiding
 483
 484         if($dom->provenance->data)
 485                 $base = $dom->provenance;
 486         elseif($dom->env->data)
 487                 $base = $dom->env;
 488         elseif($dom->data)
 489                 $base = $dom;
 490
 491         if(! $base) {
 492                 logger('mod-diaspora: unable to locate salmon data in xml ');
 493                 http_status_exit(400);
 494         }
 495
 496
 497         // Stash the signature away for now. We have to find their key or it won't be good for anything.
 498         $signature = base64url_decode($base->sig);
 499
 500         // unpack the  data
 501
 502         // strip whitespace so our data element will return to one big base64 blob
 503         $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
 504
 505
 506         // stash away some other stuff for later
 507
 508         $type = $base->data[0]->attributes()->type[0];
 509         $keyhash = $base->sig[0]->attributes()->keyhash[0];
 510         $encoding = $base->encoding;
 511         $alg = $base->alg;
 512
 513
 514         $signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 515
 516
 517         // decode the data
 518         $data = base64url_decode($data);
 519
 520
 521         if($public) {
 522                 $inner_decrypted = $data;
 523         }
 524         else {
 525
 526                 // Decode the encrypted blob
 527
 528                 $inner_encrypted = base64_decode($data);
 529                 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
 530                 $inner_decrypted = pkcs5_unpad($inner_decrypted);
 531         }
 532
 533         if(! $author_link) {
 534                 logger('mod-diaspora: Could not retrieve author URI.');
 535                 http_status_exit(400);
 536         }
 537
 538         // Once we have the author URI, go to the web and try to find their public key
 539         // (first this will look it up locally if it is in the fcontact cache)
 540         // This will also convert diaspora public key from pkcs#1 to pkcs#8
 541
 542         logger('mod-diaspora: Fetching key for ' . $author_link );
 543         $key = get_diaspora_key($author_link);
 544
 545         if(! $key) {
 546                 logger('mod-diaspora: Could not retrieve author key.');
 547                 http_status_exit(400);
 548         }
 549
 550         $verify = rsa_verify($signed_data,$signature,$key);
 551
 552         if(! $verify) {
 553                 logger('mod-diaspora: Message did not verify. Discarding.');
 554                 http_status_exit(400);
 555         }
 556
 557         logger('mod-diaspora: Message verified.');
 558
 559         return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
 560
 561 }
 562
 563
 564 function diaspora_request($importer,$xml) {
 565
 566         $a = get_app();
 567
 568         $sender_handle = unxmlify($xml->sender_handle);
 569         $recipient_handle = unxmlify($xml->recipient_handle);
 570
 571         if(! $sender_handle || ! $recipient_handle)
 572                 return;
 573
 574         $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 575
 576         if($contact) {
 577
 578                 // perhaps we were already sharing with this person. Now they're sharing with us.
 579                 // That makes us friends.
 580
 581                 if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 582                         q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 583                                 intval(CONTACT_IS_FRIEND),
 584                                 intval($contact['id']),
 585                                 intval($importer['uid'])
 586                         );
 587                 }
 588                 // send notification
 589
 590                 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
 591                         intval($importer['uid'])
 592                 );
 593
 594                 if((count($r)) && (!$r[0]['hide-friends']) && (!$contact['hidden']) && intval(get_pconfig($importer['uid'],'system','post_newfriend'))) {
 595                         require_once('include/items.php');
 596
 597                         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 598                                 intval($importer['uid'])
 599                         );
 600
 601                         // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
 602
 603                         if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
 604
 605                                 $arr = array();
 606                                 $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']);
 607                                 $arr['uid'] = $importer['uid'];
 608                                 $arr['contact-id'] = $self[0]['id'];
 609                                 $arr['wall'] = 1;
 610                                 $arr['type'] = 'wall';
 611                                 $arr['gravity'] = 0;
 612                                 $arr['origin'] = 1;
 613                                 $arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
 614                                 $arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
 615                                 $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
 616                                 $arr['verb'] = ACTIVITY_FRIEND;
 617                                 $arr['object-type'] = ACTIVITY_OBJ_PERSON;
 618
 619                                 $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]';
 620                                 $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
 621                                 $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';
 622                                 $arr['body'] =  sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
 623
 624                                 $arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
 625                                         . '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
 626                                 $arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
 627                                 $arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
 628                                 $arr['object'] .= '</link></object>' . "\n";
 629                                 $arr['last-child'] = 1;
 630
 631                                 $arr['allow_cid'] = $user[0]['allow_cid'];
 632                                 $arr['allow_gid'] = $user[0]['allow_gid'];
 633                                 $arr['deny_cid']  = $user[0]['deny_cid'];
 634                                 $arr['deny_gid']  = $user[0]['deny_gid'];
 635
 636                                 $i = item_store($arr);
 637                                 if($i)
 638                                 proc_run('php',"include/notifier.php","activity","$i");
 639
 640                         }
 641
 642                 }
 643
 644                 return;
 645         }
 646
 647         $ret = find_diaspora_person_by_handle($sender_handle);
 648
 649
 650         if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
 651                 logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
 652                 return;
 653         }
 654
 655         $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public');
 656
 657
 658
 659         $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
 660                 VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
 661                 intval($importer['uid']),
 662                 dbesc($ret['network']),
 663                 dbesc($ret['addr']),
 664                 datetime_convert(),
 665                 dbesc($ret['url']),
 666                 dbesc(normalise_link($ret['url'])),
 667                 dbesc($batch),
 668                 dbesc($ret['name']),
 669                 dbesc($ret['nick']),
 670                 dbesc($ret['photo']),
 671                 dbesc($ret['pubkey']),
 672                 dbesc($ret['notify']),
 673                 dbesc($ret['poll']),
 674                 1,
 675                 2
 676         );
 677
 678         // find the contact record we just created
 679
 680         $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 681
 682         if(! $contact_record) {
 683                 logger('diaspora_request: unable to locate newly created contact record.');
 684                 return;
 685         }
 686
 687         $g = q("select def_gid from user where uid = %d limit 1",
 688                 intval($importer['uid'])
 689         );
 690         if($g && intval($g[0]['def_gid'])) {
 691                 require_once('include/group.php');
 692                 group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']);
 693         }
 694
 695         if($importer['page-flags'] == PAGE_NORMAL) {
 696
 697                 $hash = random_string() . (string) time();   // Generate a confirm_key
 698
 699                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
 700                         VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
 701                         intval($importer['uid']),
 702                         intval($contact_record['id']),
 703                         0,
 704                         0,
 705                         dbesc( t('Sharing notification from Diaspora network')),
 706                         dbesc($hash),
 707                         dbesc(datetime_convert())
 708                 );
 709         }
 710         else {
 711
 712                 // automatic friend approval
 713
 714                 require_once('include/Photo.php');
 715
 716                 $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']);
 717
 718                 // technically they are sharing with us (CONTACT_IS_SHARING),
 719                 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
 720                 // we are going to change the relationship and make them a follower.
 721
 722                 if($importer['page-flags'] == PAGE_FREELOVE)
 723                         $new_relation = CONTACT_IS_FRIEND;
 724                 else
 725                         $new_relation = CONTACT_IS_FOLLOWER;
 726
 727                 $r = q("UPDATE `contact` SET
 728                         `photo` = '%s',
 729                         `thumb` = '%s',
 730                         `micro` = '%s',
 731                         `rel` = %d,
 732                         `name-date` = '%s',
 733                         `uri-date` = '%s',
 734                         `avatar-date` = '%s',
 735                         `blocked` = 0,
 736                         `pending` = 0
 737                         WHERE `id` = %d
 738                         ",
 739                         dbesc($photos[0]),
 740                         dbesc($photos[1]),
 741                         dbesc($photos[2]),
 742                         intval($new_relation),
 743                         dbesc(datetime_convert()),
 744                         dbesc(datetime_convert()),
 745                         dbesc(datetime_convert()),
 746                         intval($contact_record['id'])
 747                 );
 748
 749                 $u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
 750                 if($u)
 751                         $ret = diaspora_share($u[0],$contact_record);
 752         }
 753
 754         return;
 755 }
 756
 757 function diaspora_post_allow($importer,$contact) {
 758
 759         // perhaps we were already sharing with this person. Now they're sharing with us.
 760         // That makes us friends.
 761         // Normally this should have handled by getting a request - but this could get lost
 762         if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 763                 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 764                         intval(CONTACT_IS_FRIEND),
 765                         intval($contact['id']),
 766                         intval($importer['uid'])
 767                 );
 768                 $contact['rel'] = CONTACT_IS_FRIEND;
 769                 logger('diaspora_post_allow: defining user '.$contact["nick"].' as friend');
 770         }
 771
 772         if(($contact['blocked']) || ($contact['readonly']) || ($contact['archive']))
 773                 return false;
 774         if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
 775                 return true;
 776         if($contact['rel'] == CONTACT_IS_FOLLOWER)
 777                 if($importer['page-flags'] == PAGE_COMMUNITY)
 778                         return true;
 779         return false;
 780 }
 781
 782 function diaspora_plink($addr, $guid) {
 783         $r = q("SELECT `url`, `nick` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", $addr);
 784
 785         // Fallback
 786         if (!$r)
 787                 return 'https://'.substr($addr,strpos($addr,'@')+1).'/posts/'.$guid;
 788
 789         if (strstr($r[0]["url"], "/channel/"))
 790                 return $r[0]["url"]."/?f=&mid=".$guid;
 791
 792         return 'https://'.substr($addr,strpos($addr,'@')+1).'/posts/'.$guid;
 793 }
 794
 795 function diaspora_post($importer,$xml,$msg) {
 796
 797         $a = get_app();
 798         $guid = notags(unxmlify($xml->guid));
 799         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 800
 801         if($diaspora_handle != $msg['author']) {
 802                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
 803                 return 202;
 804         }
 805
 806         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
 807         if(! $contact)
 808                 return;
 809
 810         if(! diaspora_post_allow($importer,$contact)) {
 811                 logger('diaspora_post: Ignoring this author.');
 812                 return 202;
 813         }
 814
 815         $message_id = $diaspora_handle . ':' . $guid;
 816         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 817                 intval($importer['uid']),
 818                 dbesc($message_id),
 819                 dbesc($guid)
 820         );
 821         if(count($r)) {
 822                 logger('diaspora_post: message exists: ' . $guid);
 823                 return;
 824         }
 825
 826         // allocate a guid on our system - we aren't fixing any collisions.
 827         // we're ignoring them
 828
 829         $g = q("select * from guid where guid = '%s' limit 1",
 830                 dbesc($guid)
 831         );
 832         if(! count($g)) {
 833                 q("insert into guid ( guid ) values ( '%s' )",
 834                         dbesc($guid)
 835                 );
 836         }
 837
 838         $created = unxmlify($xml->created_at);
 839         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
 840
 841         $body = diaspora2bb($xml->raw_message);
 842
 843         // Add OEmbed and other information to the body
 844         $body = add_page_info_to_body($body, false, true);
 845
 846         $datarray = array();
 847
 848         $str_tags = '';
 849
 850         $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
 851         if($cnt) {
 852                 foreach($matches as $mtch) {
 853                         if(strlen($str_tags))
 854                                 $str_tags .= ',';
 855                         $str_tags .= '@[url=' . $mtch[1] . '[/url]';
 856                 }
 857         }
 858
 859         $plink = diaspora_plink($diaspora_handle, $guid);
 860
 861         $datarray['uid'] = $importer['uid'];
 862         $datarray['contact-id'] = $contact['id'];
 863         $datarray['wall'] = 0;
 864         $datarray['network'] = NETWORK_DIASPORA;
 865         $datarray['verb'] = ACTIVITY_POST;
 866         $datarray['guid'] = $guid;
 867         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 868         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 869         $datarray['private'] = $private;
 870         $datarray['parent'] = 0;
 871         $datarray['plink'] = $plink;
 872         $datarray['owner-name'] = $contact['name'];
 873         $datarray['owner-link'] = $contact['url'];
 874         //$datarray['owner-avatar'] = $contact['thumb'];
 875         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
 876         $datarray['author-name'] = $contact['name'];
 877         $datarray['author-link'] = $contact['url'];
 878         $datarray['author-avatar'] = $contact['thumb'];
 879         $datarray['body'] = $body;
 880         $datarray['tag'] = $str_tags;
 881         $datarray['app']  = 'Diaspora';
 882
 883         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
 884
 885         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 886
 887         DiasporaFetchGuid($datarray);
 888         $message_id = item_store($datarray);
 889
 890         return;
 891
 892 }
 893
 894 function DiasporaFetchGuid($item) {
 895         preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
 896                 function ($match) use ($item){
 897                         return(DiasporaFetchGuidSub($match, $item));
 898                 },$item["body"]);
 899 }
 900
 901 function DiasporaFetchGuidSub($match, $item) {
 902         $a = get_app();
 903
 904         $author = parse_url($item["author-link"]);
 905         $authorserver = $author["scheme"]."://".$author["host"];
 906
 907         $owner = parse_url($item["owner-link"]);
 908         $ownerserver = $owner["scheme"]."://".$owner["host"];
 909
 910         if (!diaspora_store_by_guid($match[1], $authorserver))
 911                 diaspora_store_by_guid($match[1], $ownerserver);
 912 }
 913
 914 function diaspora_store_by_guid($guid, $server) {
 915         require_once("include/Contact.php");
 916
 917         logger("fetching item ".$guid." from ".$server, LOGGER_DEBUG);
 918
 919         $item = diaspora_fetch_message($guid, $server);
 920
 921         if (!$item)
 922                 return false;
 923
 924         $body = $item["body"];
 925         $str_tags = $item["tag"];
 926         $app = $item["app"];
 927         $created = $item["created"];
 928         $author = $item["author"];
 929         $guid = $item["guid"];
 930         $private = $item["private"];
 931
 932         $message_id = $author.':'.$guid;
 933         $r = q("SELECT `id` FROM `item` WHERE `uid` = 0 AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 934                 dbesc($message_id),
 935                 dbesc($guid)
 936         );
 937         if(count($r))
 938                 return $r[0]["id"];
 939
 940         $person = find_diaspora_person_by_handle($author);
 941
 942         $datarray = array();
 943         $datarray['uid'] = 0;
 944         $datarray['contact-id'] = get_contact($person['url'], 0);
 945         $datarray['wall'] = 0;
 946         $datarray['network']  = NETWORK_DIASPORA;
 947         $datarray['guid'] = $guid;
 948         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 949         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 950         $datarray['private'] = $private;
 951         $datarray['parent'] = 0;
 952         $datarray['plink'] = diaspora_plink($author, $guid);
 953         $datarray['author-name'] = $person['name'];
 954         $datarray['author-link'] = $person['url'];
 955         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
 956         $datarray['owner-name'] = $datarray['author-name'];
 957         $datarray['owner-link'] = $datarray['author-link'];
 958         $datarray['owner-avatar'] = $datarray['author-avatar'];
 959         $datarray['body'] = $body;
 960         $datarray['tag'] = $str_tags;
 961         $datarray['app']  = $app;
 962         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 963
 964         DiasporaFetchGuid($datarray);
 965         $message_id = item_store($datarray);
 966
 967         // To-Do:
 968         // Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
 969
 970         return $message_id;
 971 }
 972
 973 function diaspora_fetch_message($guid, $server, $level = 0) {
 974
 975         if ($level > 5)
 976                 return false;
 977
 978         $a = get_app();
 979
 980         // This will not work if the server is not a Diaspora server
 981         $source_url = $server.'/p/'.$guid.'.xml';
 982         $x = fetch_url($source_url);
 983         if(!$x)
 984                 return false;
 985
 986         $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
 987         $source_xml = parse_xml_string($x,false);
 988
 989         $item = array();
 990         $item["app"] = 'Diaspora';
 991         $item["guid"] = $guid;
 992         $body = "";
 993
 994         if ($source_xml->post->status_message->created_at)
 995                 $item["created"] = unxmlify($source_xml->post->status_message->created_at);
 996
 997         if ($source_xml->post->status_message->provider_display_name)
 998                 $item["app"] = unxmlify($source_xml->post->status_message->provider_display_name);
 999
1000         if ($source_xml->post->status_message->diaspora_handle)
1001                 $item["author"] = unxmlify($source_xml->post->status_message->diaspora_handle);
1002
1003         if ($source_xml->post->status_message->guid)
1004                 $item["guid"] = unxmlify($source_xml->post->status_message->guid);
1005
1006         $item["private"] = (unxmlify($source_xml->post->status_message->public) == 'false');
1007
1008         if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
1009                 $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
1010                 $body = scale_external_images($body,false);
1011         } elseif($source_xml->post->asphoto->image_url) {
1012                 $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
1013                 $body = scale_external_images($body);
1014         } elseif($source_xml->post->status_message) {
1015                 $body = diaspora2bb($source_xml->post->status_message->raw_message);
1016
1017                 // Checking for embedded pictures
1018                 if($source_xml->post->status_message->photo->remote_photo_path AND
1019                         $source_xml->post->status_message->photo->remote_photo_name) {
1020
1021                         $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path));
1022                         $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name));
1023
1024                         $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body;
1025
1026                         logger('embedded picture link found: '.$body, LOGGER_DEBUG);
1027                 }
1028
1029                 $body = scale_external_images($body);
1030
1031                 // Add OEmbed and other information to the body
1032                 $body = add_page_info_to_body($body, false, true);
1033         } elseif($source_xml->post->reshare) {
1034                 // Reshare of a reshare
1035                 return diaspora_fetch_message($source_xml->post->reshare->root_guid, $server, ++$level);
1036         } else {
1037                 // Maybe it is a reshare of a photo that will be delivered at a later time (testing)
1038                 logger('no content found: '.print_r($source_xml,true));
1039                 $body = "";
1040         }
1041
1042         if ($body == "")
1043                 return false;
1044
1045         $item["tag"] = '';
1046         $item["body"] = $body;
1047
1048         return $item;
1049 }
1050
1051 function diaspora_reshare($importer,$xml,$msg) {
1052
1053         logger('diaspora_reshare: init: ' . print_r($xml,true));
1054
1055         $a = get_app();
1056         $guid = notags(unxmlify($xml->guid));
1057         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1058
1059
1060         if($diaspora_handle != $msg['author']) {
1061                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1062                 return 202;
1063         }
1064
1065         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1066         if(! $contact)
1067                 return;
1068
1069         if(! diaspora_post_allow($importer,$contact)) {
1070                 logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
1071                 return 202;
1072         }
1073
1074         $message_id = $diaspora_handle . ':' . $guid;
1075         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1076                 intval($importer['uid']),
1077                 dbesc($message_id),
1078                 dbesc($guid)
1079         );
1080         if(count($r)) {
1081                 logger('diaspora_reshare: message exists: ' . $guid);
1082                 return;
1083         }
1084
1085         $orig_author = notags(unxmlify($xml->root_diaspora_id));
1086         $orig_guid = notags(unxmlify($xml->root_guid));
1087
1088         $create_original_post = false;
1089
1090         // Do we already have this item?
1091         $r = q("SELECT `body`, `tag`, `app`, `author-link`, `plink` FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1092                 dbesc($orig_guid),
1093                 dbesc(NETWORK_DIASPORA)
1094         );
1095         if(count($r)) {
1096                 logger('reshared message '.orig_guid." reshared by ".$guid.' already exists on system: '.$orig_url);
1097
1098                 // Maybe it is already a reshared item?
1099                 // Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
1100                 require_once('include/api.php');
1101                 if (api_share_as_retweet($r[0]))
1102                         $r = array();
1103                 else
1104                         $orig_url = $a->get_baseurl().'/display/'.$orig_guid;
1105         }
1106
1107         if (!count($r)) {
1108                 $body = "";
1109                 $str_tags = "";
1110                 $app = "";
1111
1112                 $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1113
1114                 $server = 'https://'.substr($orig_author,strpos($orig_author,'@')+1);
1115                 logger('1st try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1116                 $item = diaspora_fetch_message($orig_guid, $server);
1117
1118                 if (!$item) {
1119                         $server = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1120                         logger('2nd try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1121                         $item = diaspora_fetch_message($orig_guid, $server);
1122                 }
1123                 if (!$item) {
1124                         $server = 'http://'.substr($orig_author,strpos($orig_author,'@')+1);
1125                         logger('3rd try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1126                         $item = diaspora_fetch_message($orig_guid, $server);
1127                 }
1128                 if (!$item) {
1129                         $server = 'http://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1130                         logger('4th try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1131                         $item = diaspora_fetch_message($orig_guid, $server);
1132                 }
1133
1134                 if ($item) {
1135                         $body = $item["body"];
1136                         $str_tags = $item["tag"];
1137                         $app = $item["app"];
1138                         $orig_created = $item["created"];
1139                         $orig_author = $item["author"];
1140                         $orig_guid = $item["guid"];
1141                         $create_original_post = ($body != "");
1142                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1143                 }
1144         }
1145
1146         $person = find_diaspora_person_by_handle($orig_author);
1147
1148         // allocate a guid on our system - we aren't fixing any collisions.
1149         // we're ignoring them
1150
1151         $g = q("select * from guid where guid = '%s' limit 1",
1152                 dbesc($guid)
1153         );
1154         if(! count($g)) {
1155                 q("insert into guid ( guid ) values ( '%s' )",
1156                         dbesc($guid)
1157                 );
1158         }
1159
1160         $created = unxmlify($xml->created_at);
1161         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1162
1163         $datarray = array();
1164
1165         $plink = diaspora_plink($diaspora_handle, $guid);
1166
1167         $datarray['uid'] = $importer['uid'];
1168         $datarray['contact-id'] = $contact['id'];
1169         $datarray['wall'] = 0;
1170         $datarray['network']  = NETWORK_DIASPORA;
1171         $datarray['guid'] = $guid;
1172         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1173         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1174         $datarray['private'] = $private;
1175         $datarray['parent'] = 0;
1176         $datarray['plink'] = $plink;
1177         $datarray['owner-name'] = $contact['name'];
1178         $datarray['owner-link'] = $contact['url'];
1179         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1180         if (!intval(get_config('system','wall-to-wall_share'))) {
1181                 $prefix = share_header($person['name'], $person['url'], ((x($person,'thumb')) ? $person['thumb'] : $person['photo']), $orig_guid, $orig_created, $orig_url);
1182
1183                 $datarray['author-name'] = $contact['name'];
1184                 $datarray['author-link'] = $contact['url'];
1185                 $datarray['author-avatar'] = $contact['thumb'];
1186                 $datarray['body'] = $prefix.$body."[/share]";
1187         } else {
1188                 // Let reshared messages look like wall-to-wall posts
1189                 $datarray['author-name'] = $person['name'];
1190                 $datarray['author-link'] = $person['url'];
1191                 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1192                 $datarray['body'] = $body;
1193         }
1194
1195         $datarray['tag'] = $str_tags;
1196         $datarray['app']  = $app;
1197
1198         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing)
1199         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
1200
1201         // Store the original item of a reshare
1202         if ($create_original_post) {
1203                 require_once("include/Contact.php");
1204
1205                 $datarray2 = $datarray;
1206
1207                 $datarray2['uid'] = 0;
1208                 $datarray2['contact-id'] = get_contact($person['url'], 0);
1209                 $datarray2['guid'] = $orig_guid;
1210                 $datarray2['uri'] = $datarray2['parent-uri'] = $orig_author.':'.$orig_guid;
1211                 $datarray2['changed'] = $datarray2['created'] = $datarray2['edited'] = $datarray2['commented'] = $datarray2['received'] = datetime_convert('UTC','UTC',$orig_created);
1212                 $datarray2['plink'] = diaspora_plink($orig_author, $orig_guid);
1213
1214                 $datarray2['author-name'] = $person['name'];
1215                 $datarray2['author-link'] = $person['url'];
1216                 $datarray2['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1217                 $datarray2['owner-name'] = $datarray2['author-name'];
1218                 $datarray2['owner-link'] = $datarray2['author-link'];
1219                 $datarray2['owner-avatar'] = $datarray2['author-avatar'];
1220                 $datarray2['body'] = $body;
1221
1222                 DiasporaFetchGuid($datarray2);
1223                 $message_id = item_store($datarray2);
1224
1225                 logger("Store original item ".$orig_guid." under message id ".$message_id);
1226         }
1227
1228         DiasporaFetchGuid($datarray);
1229         $message_id = item_store($datarray);
1230
1231         return;
1232
1233 }
1234
1235
1236 function diaspora_asphoto($importer,$xml,$msg) {
1237         logger('diaspora_asphoto called');
1238
1239         $a = get_app();
1240         $guid = notags(unxmlify($xml->guid));
1241         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1242
1243         if($diaspora_handle != $msg['author']) {
1244                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1245                 return 202;
1246         }
1247
1248         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1249         if(! $contact)
1250                 return;
1251
1252         if(! diaspora_post_allow($importer,$contact)) {
1253                 logger('diaspora_asphoto: Ignoring this author.');
1254                 return 202;
1255         }
1256
1257         $message_id = $diaspora_handle . ':' . $guid;
1258         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1259                 intval($importer['uid']),
1260                 dbesc($message_id),
1261                 dbesc($guid)
1262         );
1263         if(count($r)) {
1264                 logger('diaspora_asphoto: message exists: ' . $guid);
1265                 return;
1266         }
1267
1268         // allocate a guid on our system - we aren't fixing any collisions.
1269         // we're ignoring them
1270
1271         $g = q("select * from guid where guid = '%s' limit 1",
1272                 dbesc($guid)
1273         );
1274         if(! count($g)) {
1275                 q("insert into guid ( guid ) values ( '%s' )",
1276                         dbesc($guid)
1277                 );
1278         }
1279
1280         $created = unxmlify($xml->created_at);
1281         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1282
1283         if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
1284                 $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
1285                 $body = scale_external_images($body,false);
1286         }
1287         elseif($xml->image_url) {
1288                 $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
1289                 $body = scale_external_images($body);
1290         }
1291         else {
1292                 logger('diaspora_asphoto: no photo url found.');
1293                 return;
1294         }
1295
1296         $plink = diaspora_plink($diaspora_handle, $guid);
1297
1298         $datarray = array();
1299
1300         $datarray['uid'] = $importer['uid'];
1301         $datarray['contact-id'] = $contact['id'];
1302         $datarray['wall'] = 0;
1303         $datarray['network']  = NETWORK_DIASPORA;
1304         $datarray['guid'] = $guid;
1305         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1306         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1307         $datarray['private'] = $private;
1308         $datarray['parent'] = 0;
1309         $datarray['plink'] = $plink;
1310         $datarray['owner-name'] = $contact['name'];
1311         $datarray['owner-link'] = $contact['url'];
1312         //$datarray['owner-avatar'] = $contact['thumb'];
1313         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1314         $datarray['author-name'] = $contact['name'];
1315         $datarray['author-link'] = $contact['url'];
1316         $datarray['author-avatar'] = $contact['thumb'];
1317         $datarray['body'] = $body;
1318
1319         $datarray['app']  = 'Diaspora/Cubbi.es';
1320
1321         DiasporaFetchGuid($datarray);
1322         $message_id = item_store($datarray);
1323
1324         //if($message_id) {
1325         //      q("update item set plink = '%s' where id = %d",
1326         //              dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1327         //              intval($message_id)
1328         //      );
1329         //}
1330
1331         return;
1332
1333 }
1334
1335
1336
1337
1338
1339
1340 function diaspora_comment($importer,$xml,$msg) {
1341
1342         $a = get_app();
1343         $guid = notags(unxmlify($xml->guid));
1344         $parent_guid = notags(unxmlify($xml->parent_guid));
1345         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1346         $target_type = notags(unxmlify($xml->target_type));
1347         $text = unxmlify($xml->text);
1348         $author_signature = notags(unxmlify($xml->author_signature));
1349
1350         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1351
1352         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1353         if(! $contact) {
1354                 logger('diaspora_comment: cannot find contact: ' . $msg['author']);
1355                 return;
1356         }
1357
1358         if(! diaspora_post_allow($importer,$contact)) {
1359                 logger('diaspora_comment: Ignoring this author.');
1360                 return 202;
1361         }
1362
1363         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1364                 intval($importer['uid']),
1365                 dbesc($guid)
1366         );
1367         if(count($r)) {
1368                 logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
1369                 return;
1370         }
1371
1372         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1373                 intval($importer['uid']),
1374                 dbesc($parent_guid)
1375         );
1376         if(! count($r)) {
1377                 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
1378                 return;
1379         }
1380         $parent_item = $r[0];
1381
1382
1383         /* How Diaspora performs comment signature checking:
1384
1385            - If an item has been sent by the comment author to the top-level post owner to relay on
1386              to the rest of the contacts on the top-level post, the top-level post owner should check
1387              the author_signature, then create a parent_author_signature before relaying the comment on
1388            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1389              check only the parent_author_signature. Basically, they trust that the top-level post
1390              owner has already verified the authenticity of anything he/she sends out
1391            - In either case, the signature that get checked is the signature created by the person
1392              who sent the salmon
1393         */
1394
1395         $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
1396         $key = $msg['key'];
1397
1398         if($parent_author_signature) {
1399                 // If a parent_author_signature exists, then we've received the comment
1400                 // relayed from the top-level post owner. There's no need to check the
1401                 // author_signature if the parent_author_signature is valid
1402
1403                 $parent_author_signature = base64_decode($parent_author_signature);
1404
1405                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1406                         logger('diaspora_comment: top-level owner verification failed.');
1407                         return;
1408                 }
1409         }
1410         else {
1411                 // If there's no parent_author_signature, then we've received the comment
1412                 // from the comment creator. In that case, the person is commenting on
1413                 // our post, so he/she must be a contact of ours and his/her public key
1414                 // should be in $msg['key']
1415
1416                 $author_signature = base64_decode($author_signature);
1417
1418                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1419                         logger('diaspora_comment: comment author verification failed.');
1420                         return;
1421                 }
1422         }
1423
1424         // Phew! Everything checks out. Now create an item.
1425
1426         // Find the original comment author information.
1427         // We need this to make sure we display the comment author
1428         // information (name and avatar) correctly.
1429         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1430                 $person = $contact;
1431         else {
1432                 $person = find_diaspora_person_by_handle($diaspora_handle);
1433
1434                 if(! is_array($person)) {
1435                         logger('diaspora_comment: unable to find author details');
1436                         return;
1437                 }
1438         }
1439
1440         $body = diaspora2bb($text);
1441         $message_id = $diaspora_handle . ':' . $guid;
1442
1443         $datarray = array();
1444
1445         $datarray['uid'] = $importer['uid'];
1446         $datarray['contact-id'] = $contact['id'];
1447         $datarray['type'] = 'remote-comment';
1448         $datarray['wall'] = $parent_item['wall'];
1449         $datarray['network']  = NETWORK_DIASPORA;
1450         $datarray['verb'] = ACTIVITY_POST;
1451         $datarray['gravity'] = GRAVITY_COMMENT;
1452         $datarray['guid'] = $guid;
1453         $datarray['uri'] = $message_id;
1454         $datarray['parent-uri'] = $parent_item['uri'];
1455
1456         // No timestamps for comments? OK, we'll the use current time.
1457         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
1458         $datarray['private'] = $parent_item['private'];
1459
1460         $datarray['owner-name'] = $parent_item['owner-name'];
1461         $datarray['owner-link'] = $parent_item['owner-link'];
1462         $datarray['owner-avatar'] = $parent_item['owner-avatar'];
1463
1464         $datarray['author-name'] = $person['name'];
1465         $datarray['author-link'] = $person['url'];
1466         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1467         $datarray['body'] = $body;
1468
1469         // We can't be certain what the original app is if the message is relayed.
1470         if(($parent_item['origin']) && (! $parent_author_signature))
1471                 $datarray['app']  = 'Diaspora';
1472
1473         DiasporaFetchGuid($datarray);
1474         $message_id = item_store($datarray);
1475
1476         $datarray['id'] = $message_id;
1477
1478         //if($message_id) {
1479                 //q("update item set plink = '%s' where id = %d",
1480                 //      //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1481                 //      dbesc($a->get_baseurl().'/display/'.$datarray['guid']),
1482                 //      intval($message_id)
1483                 //);
1484         //}
1485
1486         if(($parent_item['origin']) && (! $parent_author_signature)) {
1487                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1488                         intval($message_id),
1489                         dbesc($signed_data),
1490                         dbesc(base64_encode($author_signature)),
1491                         dbesc($diaspora_handle)
1492                 );
1493
1494                 // if the message isn't already being relayed, notify others
1495                 // the existence of parent_author_signature means the parent_author or owner
1496                 // is already relaying.
1497
1498                 proc_run('php','include/notifier.php','comment-import',$message_id);
1499         }
1500
1501         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
1502                 dbesc($parent_item['uri']),
1503                 intval($importer['uid'])
1504         );
1505
1506         if(count($myconv)) {
1507                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
1508
1509                 foreach($myconv as $conv) {
1510
1511                         // now if we find a match, it means we're in this conversation
1512
1513                         if(! link_compare($conv['author-link'],$importer_url))
1514                                 continue;
1515
1516                         require_once('include/enotify.php');
1517
1518                         $conv_parent = $conv['parent'];
1519
1520                         notification(array(
1521                                 'type'         => NOTIFY_COMMENT,
1522                                 'notify_flags' => $importer['notify-flags'],
1523                                 'language'     => $importer['language'],
1524                                 'to_name'      => $importer['username'],
1525                                 'to_email'     => $importer['email'],
1526                                 'uid'          => $importer['uid'],
1527                                 'item'         => $datarray,
1528                                 'link'             => $a->get_baseurl().'/display/'.urlencode($datarray['guid']),
1529                                 'source_name'  => $datarray['author-name'],
1530                                 'source_link'  => $datarray['author-link'],
1531                                 'source_photo' => $datarray['author-avatar'],
1532                                 'verb'         => ACTIVITY_POST,
1533                                 'otype'        => 'item',
1534                                 'parent'       => $conv_parent,
1535                                 'parent_uri'   => $parent_uri
1536                         ));
1537
1538                         // only send one notification
1539                         break;
1540                 }
1541         }
1542         return;
1543 }
1544
1545
1546
1547
1548 function diaspora_conversation($importer,$xml,$msg) {
1549
1550         $a = get_app();
1551
1552         $guid = notags(unxmlify($xml->guid));
1553         $subject = notags(unxmlify($xml->subject));
1554         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1555         $participant_handles = notags(unxmlify($xml->participant_handles));
1556         $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1557
1558         $parent_uri = $diaspora_handle . ':' . $guid;
1559
1560         $messages = $xml->message;
1561
1562         if(! count($messages)) {
1563                 logger('diaspora_conversation: empty conversation');
1564                 return;
1565         }
1566
1567         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1568         if(! $contact) {
1569                 logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
1570                 return;
1571         }
1572
1573         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1574                 logger('diaspora_conversation: Ignoring this author.');
1575                 return 202;
1576         }
1577
1578         $conversation = null;
1579
1580         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1581                 intval($importer['uid']),
1582                 dbesc($guid)
1583         );
1584         if(count($c))
1585                 $conversation = $c[0];
1586         else {
1587                 $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
1588                         intval($importer['uid']),
1589                         dbesc($guid),
1590                         dbesc($diaspora_handle),
1591                         dbesc(datetime_convert('UTC','UTC',$created_at)),
1592                         dbesc(datetime_convert()),
1593                         dbesc($subject),
1594                         dbesc($participant_handles)
1595                 );
1596                 if($r)
1597                         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1598                 intval($importer['uid']),
1599             dbesc($guid)
1600         );
1601             if(count($c))
1602             $conversation = $c[0];
1603         }
1604         if(! $conversation) {
1605                 logger('diaspora_conversation: unable to create conversation.');
1606                 return;
1607         }
1608
1609         foreach($messages as $mesg) {
1610
1611                 $reply = 0;
1612
1613                 $msg_guid = notags(unxmlify($mesg->guid));
1614                 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1615                 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1616                 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1617                 $msg_text = unxmlify($mesg->text);
1618                 $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
1619                 $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
1620                 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1621                 if($msg_conversation_guid != $guid) {
1622                         logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
1623                         continue;
1624                 }
1625
1626                 $body = diaspora2bb($msg_text);
1627                 $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1628
1629                 $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1630
1631                 $author_signature = base64_decode($msg_author_signature);
1632
1633                 if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
1634                         $person = $contact;
1635                         $key = $msg['key'];
1636                 }
1637                 else {
1638                         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1639
1640                         if(is_array($person) && x($person,'pubkey'))
1641                                 $key = $person['pubkey'];
1642                         else {
1643                                 logger('diaspora_conversation: unable to find author details');
1644                                 continue;
1645                         }
1646                 }
1647
1648                 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1649                         logger('diaspora_conversation: verification failed.');
1650                         continue;
1651                 }
1652
1653                 if($msg_parent_author_signature) {
1654                         $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1655
1656                         $parent_author_signature = base64_decode($msg_parent_author_signature);
1657
1658                         $key = $msg['key'];
1659
1660                         if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
1661                                 logger('diaspora_conversation: owner verification failed.');
1662                                 continue;
1663                         }
1664                 }
1665
1666                 $r = q("select id from mail where `uri` = '%s' limit 1",
1667                         dbesc($message_id)
1668                 );
1669                 if(count($r)) {
1670                         logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
1671                         continue;
1672                 }
1673
1674                 q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1675                         intval($importer['uid']),
1676                         dbesc($msg_guid),
1677                         intval($conversation['id']),
1678                         dbesc($person['name']),
1679                         dbesc($person['photo']),
1680                         dbesc($person['url']),
1681                         intval($contact['id']),
1682                         dbesc($subject),
1683                         dbesc($body),
1684                         0,
1685                         0,
1686                         dbesc($message_id),
1687                         dbesc($parent_uri),
1688                         dbesc($msg_created_at)
1689                 );
1690
1691                 q("update conv set updated = '%s' where id = %d",
1692                         dbesc(datetime_convert()),
1693                         intval($conversation['id'])
1694                 );
1695
1696                 require_once('include/enotify.php');
1697                 notification(array(
1698                         'type' => NOTIFY_MAIL,
1699                         'notify_flags' => $importer['notify-flags'],
1700                         'language' => $importer['language'],
1701                         'to_name' => $importer['username'],
1702                         'to_email' => $importer['email'],
1703                         'uid' =>$importer['importer_uid'],
1704                         'item' => array('subject' => $subject, 'body' => $body),
1705                         'source_name' => $person['name'],
1706                         'source_link' => $person['url'],
1707                         'source_photo' => $person['thumb'],
1708                         'verb' => ACTIVITY_POST,
1709                         'otype' => 'mail'
1710                 ));
1711         }
1712
1713         return;
1714 }
1715
1716 function diaspora_message($importer,$xml,$msg) {
1717
1718         $a = get_app();
1719
1720         $msg_guid = notags(unxmlify($xml->guid));
1721         $msg_parent_guid = notags(unxmlify($xml->parent_guid));
1722         $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
1723         $msg_author_signature = notags(unxmlify($xml->author_signature));
1724         $msg_text = unxmlify($xml->text);
1725         $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1726         $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1727         $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
1728
1729         $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
1730
1731         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
1732         if(! $contact) {
1733                 logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
1734                 return;
1735         }
1736
1737         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1738                 logger('diaspora_message: Ignoring this author.');
1739                 return 202;
1740         }
1741
1742         $conversation = null;
1743
1744         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1745                 intval($importer['uid']),
1746                 dbesc($msg_conversation_guid)
1747         );
1748         if(count($c))
1749                 $conversation = $c[0];
1750         else {
1751                 logger('diaspora_message: conversation not available.');
1752                 return;
1753         }
1754
1755         $reply = 0;
1756
1757         $body = diaspora2bb($msg_text);
1758         $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1759
1760         $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1761
1762
1763         $author_signature = base64_decode($msg_author_signature);
1764
1765         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1766         if(is_array($person) && x($person,'pubkey'))
1767                 $key = $person['pubkey'];
1768         else {
1769                 logger('diaspora_message: unable to find author details');
1770                 return;
1771         }
1772
1773         if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1774                 logger('diaspora_message: verification failed.');
1775                 return;
1776         }
1777
1778         $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
1779                 dbesc($message_id),
1780                 intval($importer['uid'])
1781         );
1782         if(count($r)) {
1783                 logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
1784                 return;
1785         }
1786
1787         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')",
1788                 intval($importer['uid']),
1789                 dbesc($msg_guid),
1790                 intval($conversation['id']),
1791                 dbesc($person['name']),
1792                 dbesc($person['photo']),
1793                 dbesc($person['url']),
1794                 intval($contact['id']),
1795                 dbesc($conversation['subject']),
1796                 dbesc($body),
1797                 0,
1798                 1,
1799                 dbesc($message_id),
1800                 dbesc($parent_uri),
1801                 dbesc($msg_created_at)
1802         );
1803
1804         q("update conv set updated = '%s' where id = %d",
1805                 dbesc(datetime_convert()),
1806                 intval($conversation['id'])
1807         );
1808
1809         return;
1810 }
1811
1812
1813 function diaspora_photo($importer,$xml,$msg,$attempt=1) {
1814
1815         $a = get_app();
1816
1817         logger('diaspora_photo: init',LOGGER_DEBUG);
1818
1819         $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
1820
1821         $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
1822
1823         $status_message_guid = notags(unxmlify($xml->status_message_guid));
1824
1825         $guid = notags(unxmlify($xml->guid));
1826
1827         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1828
1829         $public = notags(unxmlify($xml->public));
1830
1831         $created_at = notags(unxmlify($xml_created_at));
1832
1833         logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
1834
1835         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1836         if(! $contact) {
1837                 logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
1838                 return;
1839         }
1840
1841         if(! diaspora_post_allow($importer,$contact)) {
1842                 logger('diaspora_photo: Ignoring this author.');
1843                 return 202;
1844         }
1845
1846         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1847                 intval($importer['uid']),
1848                 dbesc($status_message_guid)
1849         );
1850         if(! count($r)) {
1851                 if($attempt <= 3) {
1852                         q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)",
1853                            intval($importer['uid']),
1854                            dbesc(serialize($msg)),
1855                            intval($attempt + 1)
1856                         );
1857                 }
1858                 logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid);
1859                 return;
1860         }
1861
1862         $parent_item = $r[0];
1863
1864         $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
1865
1866         $link_text = scale_external_images($link_text, true,
1867                                            array($remote_photo_name, 'scaled_full_' . $remote_photo_name));
1868
1869         if(strpos($parent_item['body'],$link_text) === false) {
1870                 $r = q("UPDATE `item` SET `body` = '%s', `visible` = 1 WHERE `id` = %d AND `uid` = %d",
1871                         dbesc($link_text . $parent_item['body']),
1872                         intval($parent_item['id']),
1873                         intval($parent_item['uid'])
1874                 );
1875                 update_thread($parent_item['id']);
1876         }
1877
1878         return;
1879 }
1880
1881
1882
1883
1884 function diaspora_like($importer,$xml,$msg) {
1885
1886         $a = get_app();
1887         $guid = notags(unxmlify($xml->guid));
1888         $parent_guid = notags(unxmlify($xml->parent_guid));
1889         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1890         $target_type = notags(unxmlify($xml->target_type));
1891         $positive = notags(unxmlify($xml->positive));
1892         $author_signature = notags(unxmlify($xml->author_signature));
1893
1894         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1895
1896         // likes on comments not supported here and likes on photos not supported by Diaspora
1897
1898 //      if($target_type !== 'Post')
1899 //              return;
1900
1901         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1902         if(! $contact) {
1903                 logger('diaspora_like: cannot find contact: ' . $msg['author']);
1904                 return;
1905         }
1906
1907         if(! diaspora_post_allow($importer,$contact)) {
1908                 logger('diaspora_like: Ignoring this author.');
1909                 return 202;
1910         }
1911
1912         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1913                 intval($importer['uid']),
1914                 dbesc($parent_guid)
1915         );
1916         if(! count($r)) {
1917                 logger('diaspora_like: parent item not found: ' . $guid);
1918                 return;
1919         }
1920
1921         $parent_item = $r[0];
1922
1923         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1924                 intval($importer['uid']),
1925                 dbesc($guid)
1926         );
1927         if(count($r)) {
1928                 if($positive === 'true') {
1929                         logger('diaspora_like: duplicate like: ' . $guid);
1930                         return;
1931                 }
1932                 // Note: I don't think "Like" objects with positive = "false" are ever actually used
1933                 // It looks like "RelayableRetractions" are used for "unlike" instead
1934                 if($positive === 'false') {
1935                         logger('diaspora_like: received a like with positive set to "false"...ignoring');
1936 /*                      q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d",
1937                                 intval($r[0]['id']),
1938                                 intval($importer['uid'])
1939                         );*/
1940                         // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
1941                         //  send notification via proc_run()
1942                         return;
1943                 }
1944         }
1945         // Note: I don't think "Like" objects with positive = "false" are ever actually used
1946         // It looks like "RelayableRetractions" are used for "unlike" instead
1947         if($positive === 'false') {
1948                 logger('diaspora_like: received a like with positive set to "false"');
1949                 logger('diaspora_like: unlike received with no corresponding like...ignoring');
1950                 return;
1951         }
1952
1953
1954         /* How Diaspora performs "like" signature checking:
1955
1956            - If an item has been sent by the like author to the top-level post owner to relay on
1957              to the rest of the contacts on the top-level post, the top-level post owner should check
1958              the author_signature, then create a parent_author_signature before relaying the like on
1959            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1960              check only the parent_author_signature. Basically, they trust that the top-level post
1961              owner has already verified the authenticity of anything he/she sends out
1962            - In either case, the signature that get checked is the signature created by the person
1963              who sent the salmon
1964         */
1965
1966         // Diaspora has changed the way they are signing the likes.
1967         // Just to make sure that we don't miss any likes we will check the old and the current way.
1968         $old_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
1969
1970         $signed_data = $positive . ';' . $guid . ';' . $target_type . ';' . $parent_guid . ';' . $diaspora_handle;
1971
1972         $key = $msg['key'];
1973
1974         if ($parent_author_signature) {
1975                 // If a parent_author_signature exists, then we've received the like
1976                 // relayed from the top-level post owner. There's no need to check the
1977                 // author_signature if the parent_author_signature is valid
1978
1979                 $parent_author_signature = base64_decode($parent_author_signature);
1980
1981                 if (!rsa_verify($signed_data,$parent_author_signature,$key,'sha256') AND
1982                         !rsa_verify($old_signed_data,$parent_author_signature,$key,'sha256')) {
1983
1984                         logger('diaspora_like: top-level owner verification failed.');
1985                         return;
1986                 }
1987         } else {
1988                 // If there's no parent_author_signature, then we've received the like
1989                 // from the like creator. In that case, the person is "like"ing
1990                 // our post, so he/she must be a contact of ours and his/her public key
1991                 // should be in $msg['key']
1992
1993                 $author_signature = base64_decode($author_signature);
1994
1995                 if (!rsa_verify($signed_data,$author_signature,$key,'sha256') AND
1996                         !rsa_verify($old_signed_data,$author_signature,$key,'sha256')) {
1997
1998                         logger('diaspora_like: like creator verification failed.');
1999                         return;
2000                 }
2001         }
2002
2003         // Phew! Everything checks out. Now create an item.
2004
2005         // Find the original comment author information.
2006         // We need this to make sure we display the comment author
2007         // information (name and avatar) correctly.
2008         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
2009                 $person = $contact;
2010         else {
2011                 $person = find_diaspora_person_by_handle($diaspora_handle);
2012
2013                 if(! is_array($person)) {
2014                         logger('diaspora_like: unable to find author details');
2015                         return;
2016                 }
2017         }
2018
2019         $uri = $diaspora_handle . ':' . $guid;
2020
2021         $activity = ACTIVITY_LIKE;
2022         $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
2023         $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
2024         $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
2025         $body = $parent_item['body'];
2026
2027         $obj = <<< EOT
2028
2029         <object>
2030                 <type>$objtype</type>
2031                 <local>1</local>
2032                 <id>{$parent_item['uri']}</id>
2033                 <link>$link</link>
2034                 <title></title>
2035                 <content>$body</content>
2036         </object>
2037 EOT;
2038         $bodyverb = t('%1$s likes %2$s\'s %3$s');
2039
2040         $arr = array();
2041
2042         $arr['uri'] = $uri;
2043         $arr['uid'] = $importer['uid'];
2044         $arr['guid'] = $guid;
2045         $arr['network']  = NETWORK_DIASPORA;
2046         $arr['contact-id'] = $contact['id'];
2047         $arr['type'] = 'activity';
2048         $arr['wall'] = $parent_item['wall'];
2049         $arr['gravity'] = GRAVITY_LIKE;
2050         $arr['parent'] = $parent_item['id'];
2051         $arr['parent-uri'] = $parent_item['uri'];
2052
2053         $arr['owner-name'] = $parent_item['name'];
2054         $arr['owner-link'] = $parent_item['url'];
2055         //$arr['owner-avatar'] = $parent_item['thumb'];
2056         $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']);
2057
2058         $arr['author-name'] = $person['name'];
2059         $arr['author-link'] = $person['url'];
2060         $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
2061
2062         $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2063         $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
2064         //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
2065         $plink = '[url='.$a->get_baseurl().'/display/'.urlencode($guid).']'.$post_type.'[/url]';
2066         $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
2067
2068         $arr['app']  = 'Diaspora';
2069
2070         $arr['private'] = $parent_item['private'];
2071         $arr['verb'] = $activity;
2072         $arr['object-type'] = $objtype;
2073         $arr['object'] = $obj;
2074         $arr['visible'] = 1;
2075         $arr['unseen'] = 1;
2076         $arr['last-child'] = 0;
2077
2078         $message_id = item_store($arr);
2079
2080
2081         //if($message_id) {
2082         //      q("update item set plink = '%s' where id = %d",
2083         //              //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
2084         //              dbesc($a->get_baseurl().'/display/'.$guid),
2085         //              intval($message_id)
2086         //      );
2087         //}
2088
2089         if(! $parent_author_signature) {
2090                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2091                         intval($message_id),
2092                         dbesc($signed_data),
2093                         dbesc(base64_encode($author_signature)),
2094                         dbesc($diaspora_handle)
2095                 );
2096         }
2097
2098         // if the message isn't already being relayed, notify others
2099         // the existence of parent_author_signature means the parent_author or owner
2100         // is already relaying. The parent_item['origin'] indicates the message was created on our system
2101
2102         if(($parent_item['origin']) && (! $parent_author_signature))
2103                 proc_run('php','include/notifier.php','comment-import',$message_id);
2104
2105         return;
2106 }
2107
2108 function diaspora_retraction($importer,$xml) {
2109
2110
2111         $guid = notags(unxmlify($xml->guid));
2112         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2113         $type = notags(unxmlify($xml->type));
2114
2115         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2116         if(! $contact)
2117                 return;
2118
2119         if($type === 'Person') {
2120                 require_once('include/Contact.php');
2121                 contact_remove($contact['id']);
2122         }
2123         elseif($type === 'Post') {
2124                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2125                         dbesc('guid'),
2126                         intval($importer['uid'])
2127                 );
2128                 if(count($r)) {
2129                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2130                                 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d",
2131                                         dbesc(datetime_convert()),
2132                                         intval($r[0]['id'])
2133                                 );
2134                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2135                         }
2136                 }
2137         }
2138
2139         return 202;
2140         // NOTREACHED
2141 }
2142
2143 function diaspora_signed_retraction($importer,$xml,$msg) {
2144
2145
2146         $guid = notags(unxmlify($xml->target_guid));
2147         $diaspora_handle = notags(unxmlify($xml->sender_handle));
2148         $type = notags(unxmlify($xml->target_type));
2149         $sig = notags(unxmlify($xml->target_author_signature));
2150
2151         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
2152
2153         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2154         if(! $contact) {
2155                 logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']);
2156                 return;
2157         }
2158
2159
2160         $signed_data = $guid . ';' . $type ;
2161         $key = $msg['key'];
2162
2163         /* How Diaspora performs relayable_retraction signature checking:
2164
2165            - If an item has been sent by the item author to the top-level post owner to relay on
2166              to the rest of the contacts on the top-level post, the top-level post owner checks
2167              the author_signature, then creates a parent_author_signature before relaying the item on
2168            - If an item has been relayed on by the top-level post owner, the contacts who receive it
2169              check only the parent_author_signature. Basically, they trust that the top-level post
2170              owner has already verified the authenticity of anything he/she sends out
2171            - In either case, the signature that get checked is the signature created by the person
2172              who sent the salmon
2173         */
2174
2175         if($parent_author_signature) {
2176
2177                 $parent_author_signature = base64_decode($parent_author_signature);
2178
2179                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2180                         logger('diaspora_signed_retraction: top-level post owner verification failed');
2181                         return;
2182                 }
2183
2184         }
2185         else {
2186
2187                 $sig_decode = base64_decode($sig);
2188
2189                 if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
2190                         logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
2191                         return;
2192                 }
2193         }
2194
2195         if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
2196                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2197                         dbesc($guid),
2198                         intval($importer['uid'])
2199                 );
2200                 if(count($r)) {
2201                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2202                                 q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d",
2203                                         dbesc(datetime_convert()),
2204                                         dbesc(datetime_convert()),
2205                                         intval($r[0]['id'])
2206                                 );
2207                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2208
2209                                 // Now check if the retraction needs to be relayed by us
2210                                 //
2211                                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2212                                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2213                                 // The only item with `parent` and `id` as the parent id is the parent item.
2214                                 $p = q("select origin from item where parent = %d and id = %d limit 1",
2215                                         $r[0]['parent'],
2216                                         $r[0]['parent']
2217                                 );
2218                                 if(count($p)) {
2219                                         if(($p[0]['origin']) && (! $parent_author_signature)) {
2220                                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2221                                                         $r[0]['id'],
2222                                                         dbesc($signed_data),
2223                                                         dbesc($sig),
2224                                                         dbesc($diaspora_handle)
2225                                                 );
2226
2227                                                 // the existence of parent_author_signature would have meant the parent_author or owner
2228                                                 // is already relaying.
2229                                                 logger('diaspora_signed_retraction: relaying relayable_retraction');
2230
2231                                                 proc_run('php','include/notifier.php','drop',$r[0]['id']);
2232                                         }
2233                                 }
2234                         }
2235                 }
2236         }
2237         else
2238                 logger('diaspora_signed_retraction: unknown type: ' . $type);
2239
2240         return 202;
2241         // NOTREACHED
2242 }
2243
2244 function diaspora_profile($importer,$xml,$msg) {
2245
2246         $a = get_app();
2247         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2248
2249
2250         if($diaspora_handle != $msg['author']) {
2251                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
2252                 return 202;
2253         }
2254
2255         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2256         if(! $contact)
2257                 return;
2258
2259         if($contact['blocked']) {
2260                 logger('diaspora_post: Ignoring this author.');
2261                 return 202;
2262         }
2263
2264         $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
2265         $image_url = unxmlify($xml->image_url);
2266         $birthday = unxmlify($xml->birthday);
2267         $location = diaspora2bb(unxmlify($xml->location));
2268         $about = diaspora2bb(unxmlify($xml->bio));
2269         $gender = unxmlify($xml->gender);
2270         $tags = unxmlify($xml->tag_string);
2271
2272         $tags = explode("#", $tags);
2273
2274         $keywords = array();
2275         foreach ($tags as $tag) {
2276                 $tag = trim(strtolower($tag));
2277                 if ($tag != "")
2278                         $keywords[] = $tag;
2279         }
2280
2281         $keywords = implode(", ", $keywords);
2282
2283         $handle_parts = explode("@", $diaspora_handle);
2284         if($name === '') {
2285                 $name = $handle_parts[0];
2286         }
2287
2288         if( preg_match("|^https?://|", $image_url) === 0) {
2289                 $image_url = "http://" . $handle_parts[1] . $image_url;
2290         }
2291
2292 /*      $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
2293                 intval($importer['uid']),
2294                 intval($contact['id'])
2295         );
2296         $oldphotos = ((count($r)) ? $r : null);*/
2297
2298         require_once('include/Photo.php');
2299
2300         $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
2301
2302         // Generic birthday. We don't know the timezone. The year is irrelevant.
2303
2304         $birthday = str_replace('1000','1901',$birthday);
2305
2306         $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
2307
2308         // this is to prevent multiple birthday notifications in a single year
2309         // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2310
2311         if(substr($birthday,5) === substr($contact['bd'],5))
2312                 $birthday = $contact['bd'];
2313
2314         // TODO: update name on item['author-name'] if the name changed. See consume_feed()
2315         // Not doing this currently because D* protocol is scheduled for revision soon.
2316
2317         $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2318                 dbesc($name),
2319                 dbesc(datetime_convert()),
2320                 dbesc($images[0]),
2321                 dbesc($images[1]),
2322                 dbesc($images[2]),
2323                 dbesc(datetime_convert()),
2324                 dbesc($birthday),
2325                 dbesc($location),
2326                 dbesc($about),
2327                 dbesc($keywords),
2328                 dbesc($gender),
2329                 intval($contact['id']),
2330                 intval($importer['uid'])
2331         );
2332
2333         if (unxmlify($xml->searchable) == "true") {
2334                 require_once('include/socgraph.php');
2335                 poco_check($contact['url'], $name, NETWORK_DIASPORA, $images[0], $about, $location, $gender, $keywords, "",
2336                         datetime_convert(), 2, $contact['id'], $importer['uid']);
2337         }
2338
2339         $profileurl = "";
2340         $author = q("SELECT * FROM `unique_contacts` WHERE `url`='%s' LIMIT 1",
2341                         dbesc(normalise_link($contact['url'])));
2342
2343         if (count($author) == 0) {
2344                 q("INSERT INTO `unique_contacts` (`url`, `name`, `avatar`, `location`, `about`) VALUES ('%s', '%s', '%s', '%s', '%s')",
2345                         dbesc(normalise_link($contact['url'])), dbesc($name), dbesc($location), dbesc($about), dbesc($images[0]));
2346
2347                 $author = q("SELECT id FROM unique_contacts WHERE url='%s' LIMIT 1",
2348                         dbesc(normalise_link($contact['url'])));
2349         } else if (normalise_link($contact['url']).$name.$location.$about != normalise_link($author[0]["url"]).$author[0]["name"].$author[0]["location"].$author[0]["about"]) {
2350                 q("UPDATE unique_contacts SET name = '%s', avatar = '%s', `location` = '%s', `about` = '%s' WHERE url = '%s'",
2351                 dbesc($name), dbesc($images[0]), dbesc($location), dbesc($about), dbesc(normalise_link($contact['url'])));
2352         }
2353
2354 /*      if($r) {
2355                 if($oldphotos) {
2356                         foreach($oldphotos as $ph) {
2357                                 q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
2358                                         intval($importer['uid']),
2359                                         intval($contact['id']),
2360                                         dbesc($ph['resource-id'])
2361                                 );
2362                         }
2363                 }
2364         }       */
2365
2366         return;
2367
2368 }
2369
2370 function diaspora_share($me,$contact) {
2371         $a = get_app();
2372         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2373         $theiraddr = $contact['addr'];
2374
2375         $tpl = get_markup_template('diaspora_share.tpl');
2376         $msg = replace_macros($tpl, array(
2377                 '$sender' => $myaddr,
2378                 '$recipient' => $theiraddr
2379         ));
2380
2381         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2382         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2383
2384         return(diaspora_transmit($owner,$contact,$slap, false));
2385 }
2386
2387 function diaspora_unshare($me,$contact) {
2388
2389         $a = get_app();
2390         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2391
2392         $tpl = get_markup_template('diaspora_retract.tpl');
2393         $msg = replace_macros($tpl, array(
2394                 '$guid'   => $me['guid'],
2395                 '$type'   => 'Person',
2396                 '$handle' => $myaddr
2397         ));
2398
2399         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2400         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2401
2402         return(diaspora_transmit($owner,$contact,$slap, false));
2403
2404 }
2405
2406
2407 function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
2408
2409         $a = get_app();
2410         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2411         $theiraddr = $contact['addr'];
2412
2413         $images = array();
2414
2415         $title = $item['title'];
2416         $body = $item['body'];
2417
2418 /*
2419         // We're trying to match Diaspora's split message/photo protocol but
2420         // all the photos are displayed on D* as links and not img's - even
2421         // though we're sending pretty much precisely what they send us when
2422         // doing the same operation.
2423         // Commented out for now, we'll use bb2diaspora to convert photos to markdown
2424         // which seems to get through intact.
2425
2426         $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
2427         if($cnt) {
2428                 foreach($matches as $mtch) {
2429                         $detail = array();
2430                         $detail['str'] = $mtch[0];
2431                         $detail['path'] = dirname($mtch[1]) . '/';
2432                         $detail['file'] = basename($mtch[1]);
2433                         $detail['guid'] = $item['guid'];
2434                         $detail['handle'] = $myaddr;
2435                         $images[] = $detail;
2436                         $body = str_replace($detail['str'],$mtch[1],$body);
2437                 }
2438         }
2439 */
2440
2441         //if(strlen($title))
2442         //      $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
2443
2444         // convert to markdown
2445         $body = xmlify(html_entity_decode(bb2diaspora($body)));
2446         //$body = bb2diaspora($body);
2447
2448         // Adding the title
2449         if(strlen($title))
2450                 $body = "## ".html_entity_decode($title)."\n\n".$body;
2451
2452         if($item['attach']) {
2453                 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
2454                 if(cnt) {
2455                         $body .= "\n" . t('Attachments:') . "\n";
2456                         foreach($matches as $mtch) {
2457                                 $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
2458                         }
2459                 }
2460         }
2461
2462
2463         $public = (($item['private']) ? 'false' : 'true');
2464
2465         require_once('include/datetime.php');
2466         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2467
2468         // Detect a share element and do a reshare
2469         // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb
2470         if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) {
2471                 $tpl = get_markup_template('diaspora_reshare.tpl');
2472                 $msg = replace_macros($tpl, array(
2473                         '$root_handle' => xmlify($ret['root_handle']),
2474                         '$root_guid' => $ret['root_guid'],
2475                         '$guid' => $item['guid'],
2476                         '$handle' => xmlify($myaddr),
2477                         '$public' => $public,
2478                         '$created' => $created,
2479                         '$provider' => $item["app"]
2480                 ));
2481         } else {
2482                 $tpl = get_markup_template('diaspora_post.tpl');
2483                 $msg = replace_macros($tpl, array(
2484                         '$body' => $body,
2485                         '$guid' => $item['guid'],
2486                         '$handle' => xmlify($myaddr),
2487                         '$public' => $public,
2488                         '$created' => $created,
2489                         '$provider' => $item["app"]
2490                 ));
2491         }
2492
2493         logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA);
2494
2495         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2496         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2497
2498         $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
2499
2500         logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG);
2501
2502         if(count($images)) {
2503                 diaspora_send_images($item,$owner,$contact,$images,$public_batch);
2504         }
2505
2506         return $return_code;
2507 }
2508
2509 function diaspora_is_reshare($body) {
2510         $body = trim($body);
2511
2512         // Skip if it isn't a pure repeated messages
2513         // Does it start with a share?
2514         if (strpos($body, "[share") > 0)
2515                 return(false);
2516
2517         // Does it end with a share?
2518         if (strlen($body) > (strrpos($body, "[/share]") + 8))
2519                 return(false);
2520
2521         $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2522         // Skip if there is no shared message in there
2523         if ($body == $attributes)
2524                 return(false);
2525
2526         $guid = "";
2527         preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2528         if ($matches[1] != "")
2529                 $guid = $matches[1];
2530
2531         preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2532         if ($matches[1] != "")
2533                 $guid = $matches[1];
2534
2535         if ($guid != "") {
2536                 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2537                         dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2538                 if ($r) {
2539                         $ret= array();
2540                         $ret["root_handle"] = diaspora_handle_from_contact($r[0]["contact-id"]);
2541                         $ret["root_guid"] = $guid;
2542                         return($ret);
2543                 }
2544         }
2545
2546         $profile = "";
2547         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2548         if ($matches[1] != "")
2549                 $profile = $matches[1];
2550
2551         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2552         if ($matches[1] != "")
2553                 $profile = $matches[1];
2554
2555         $ret= array();
2556
2557         $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2558         if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2559                 return(false);
2560
2561         $link = "";
2562         preg_match("/link='(.*?)'/ism", $attributes, $matches);
2563         if ($matches[1] != "")
2564                 $link = $matches[1];
2565
2566         preg_match('/link="(.*?)"/ism', $attributes, $matches);
2567         if ($matches[1] != "")
2568                 $link = $matches[1];
2569
2570         $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2571         if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
2572                 return(false);
2573
2574         return($ret);
2575 }
2576
2577 function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
2578         $a = get_app();
2579         if(! count($images))
2580                 return;
2581         $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
2582
2583         $tpl = get_markup_template('diaspora_photo.tpl');
2584         foreach($images as $image) {
2585                 if(! stristr($image['path'],$mysite))
2586                         continue;
2587                 $resource = str_replace('.jpg','',$image['file']);
2588                 $resource = substr($resource,0,strpos($resource,'-'));
2589
2590                 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
2591                         dbesc($resource),
2592                         intval($owner['uid'])
2593                 );
2594                 if(! count($r))
2595                         continue;
2596                 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
2597                 $msg = replace_macros($tpl,array(
2598                         '$path' => xmlify($image['path']),
2599                         '$filename' => xmlify($image['file']),
2600                         '$msg_guid' => xmlify($image['guid']),
2601                         '$guid' => xmlify($r[0]['guid']),
2602                         '$handle' => xmlify($image['handle']),
2603                         '$public' => xmlify($public),
2604                         '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
2605                 ));
2606
2607
2608                 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
2609                 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2610                 //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2611
2612                 diaspora_transmit($owner,$contact,$slap,$public_batch);
2613         }
2614
2615 }
2616
2617 function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
2618
2619         $a = get_app();
2620         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2621 //      $theiraddr = $contact['addr'];
2622
2623         // Diaspora doesn't support threaded comments, but some
2624         // versions of Diaspora (i.e. Diaspora-pistos) support
2625         // likes on comments
2626         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2627                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2628                         dbesc($item['thr-parent'])
2629                       );
2630         }
2631         else {
2632                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2633                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2634                 // The only item with `parent` and `id` as the parent id is the parent item.
2635                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2636                         intval($item['parent']),
2637                         intval($item['parent'])
2638                 );
2639         }
2640         if(count($p))
2641                 $parent = $p[0];
2642         else
2643                 return;
2644
2645         if($item['verb'] === ACTIVITY_LIKE) {
2646                 $tpl = get_markup_template('diaspora_like.tpl');
2647                 $like = true;
2648                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2649 //              $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post');
2650 //              $positive = (($item['deleted']) ? 'false' : 'true');
2651                 $positive = 'true';
2652
2653                 if(($item['deleted']))
2654                         logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
2655         }
2656         else {
2657                 $tpl = get_markup_template('diaspora_comment.tpl');
2658                 $like = false;
2659         }
2660
2661         $text = html_entity_decode(bb2diaspora($item['body']));
2662
2663         // sign it
2664
2665         if($like)
2666                 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr;
2667         else
2668                 $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr;
2669
2670         $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2671
2672         $msg = replace_macros($tpl,array(
2673                 '$guid' => xmlify($item['guid']),
2674                 '$parent_guid' => xmlify($parent['guid']),
2675                 '$target_type' =>xmlify($target_type),
2676                 '$authorsig' => xmlify($authorsig),
2677                 '$body' => xmlify($text),
2678                 '$positive' => xmlify($positive),
2679                 '$handle' => xmlify($myaddr)
2680         ));
2681
2682         logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
2683
2684         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2685         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2686
2687         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2688 }
2689
2690
2691 function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
2692
2693
2694         $a = get_app();
2695         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2696 //      $theiraddr = $contact['addr'];
2697
2698         $body = $item['body'];
2699         $text = html_entity_decode(bb2diaspora($body));
2700
2701         // Diaspora doesn't support threaded comments, but some
2702         // versions of Diaspora (i.e. Diaspora-pistos) support
2703         // likes on comments
2704         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2705                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2706                         dbesc($item['thr-parent'])
2707                       );
2708         }
2709         else {
2710                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2711                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2712                 // The only item with `parent` and `id` as the parent id is the parent item.
2713                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2714                        intval($item['parent']),
2715                        intval($item['parent'])
2716                       );
2717         }
2718         if(count($p))
2719                 $parent = $p[0];
2720         else
2721                 return;
2722
2723         $like = false;
2724         $relay_retract = false;
2725         $sql_sign_id = 'iid';
2726         if( $item['deleted']) {
2727                 $relay_retract = true;
2728
2729                 $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2730
2731                 $sql_sign_id = 'retract_iid';
2732                 $tpl = get_markup_template('diaspora_relayable_retraction.tpl');
2733         }
2734         elseif($item['verb'] === ACTIVITY_LIKE) {
2735                 $like = true;
2736
2737                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2738 //              $positive = (($item['deleted']) ? 'false' : 'true');
2739                 $positive = 'true';
2740
2741                 $tpl = get_markup_template('diaspora_like_relay.tpl');
2742         }
2743         else { // item is a comment
2744                 $tpl = get_markup_template('diaspora_comment_relay.tpl');
2745         }
2746
2747
2748         // fetch the original signature if the relayable was created by a Diaspora
2749         // or DFRN user. Relayables for other networks are not supported.
2750
2751 /*      $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
2752                 intval($item['id'])
2753         );
2754         if(count($r)) {
2755                 $orig_sign = $r[0];
2756                 $signed_text = $orig_sign['signed_text'];
2757                 $authorsig = $orig_sign['signature'];
2758                 $handle = $orig_sign['signer'];
2759         }
2760         else {
2761
2762                 // Author signature information (for likes, comments, and retractions of likes or comments,
2763                 // whether from Diaspora or Friendica) must be placed in the `sign` table before this
2764                 // function is called
2765                 logger('diaspora_send_relay: original author signature not found, cannot send relayable');
2766                 return;
2767         }*/
2768
2769         /* Since the author signature is only checked by the parent, not by the relay recipients,
2770          * I think it may not be necessary for us to do so much work to preserve all the original
2771          * signatures. The important thing that Diaspora DOES need is the original creator's handle.
2772          * Let's just generate that and forget about all the original author signature stuff.
2773          *
2774          * Note: this might be more of an problem if we want to support likes on comments for older
2775          * versions of Diaspora (diaspora-pistos), but since there are a number of problems with
2776          * doing that, let's ignore it for now.
2777          *
2778          * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't
2779          * been done yet
2780          */
2781
2782         $handle = diaspora_handle_from_contact($item['contact-id']);
2783         if(! $handle)
2784                 return;
2785
2786
2787         if($relay_retract)
2788                 $sender_signed_text = $item['guid'] . ';' . $target_type;
2789         elseif($like)
2790                 $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle;
2791         else
2792                 $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle;
2793
2794         // Sign the relayable with the top-level owner's signature
2795         //
2796         // We'll use the $sender_signed_text that we just created, instead of the $signed_text
2797         // stored in the database, because that provides the best chance that Diaspora will
2798         // be able to reconstruct the signed text the same way we did. This is particularly a
2799         // concern for the comment, whose signed text includes the text of the comment. The
2800         // smallest change in the text of the comment, including removing whitespace, will
2801         // make the signature verification fail. Since we translate from BB code to Diaspora's
2802         // markup at the top of this function, which is AFTER we placed the original $signed_text
2803         // in the database, it's hazardous to trust the original $signed_text.
2804
2805         $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256'));
2806
2807         $msg = replace_macros($tpl,array(
2808                 '$guid' => xmlify($item['guid']),
2809                 '$parent_guid' => xmlify($parent['guid']),
2810                 '$target_type' =>xmlify($target_type),
2811                 '$authorsig' => xmlify($authorsig),
2812                 '$parentsig' => xmlify($parentauthorsig),
2813                 '$body' => xmlify($text),
2814                 '$positive' => xmlify($positive),
2815                 '$handle' => xmlify($handle)
2816         ));
2817
2818         logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
2819
2820
2821         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2822         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2823
2824         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2825
2826 }
2827
2828
2829
2830 function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
2831
2832         $a = get_app();
2833         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2834
2835         // Check whether the retraction is for a top-level post or whether it's a relayable
2836         if( $item['uri'] !== $item['parent-uri'] ) {
2837
2838                 $tpl = get_markup_template('diaspora_relay_retraction.tpl');
2839                 $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2840         }
2841         else {
2842
2843                 $tpl = get_markup_template('diaspora_signed_retract.tpl');
2844                 $target_type = 'StatusMessage';
2845         }
2846
2847         $signed_text = $item['guid'] . ';' . $target_type;
2848
2849         $msg = replace_macros($tpl, array(
2850                 '$guid'   => xmlify($item['guid']),
2851                 '$type'   => xmlify($target_type),
2852                 '$handle' => xmlify($myaddr),
2853                 '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
2854         ));
2855
2856         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2857         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2858
2859         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2860 }
2861
2862 function diaspora_send_mail($item,$owner,$contact) {
2863
2864         $a = get_app();
2865         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2866
2867         $r = q("select * from conv where id = %d and uid = %d limit 1",
2868                 intval($item['convid']),
2869                 intval($item['uid'])
2870         );
2871
2872         if(! count($r)) {
2873                 logger('diaspora_send_mail: conversation not found.');
2874                 return;
2875         }
2876         $cnv = $r[0];
2877
2878         $conv = array(
2879                 'guid' => xmlify($cnv['guid']),
2880                 'subject' => xmlify($cnv['subject']),
2881                 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
2882                 'diaspora_handle' => xmlify($cnv['creator']),
2883                 'participant_handles' => xmlify($cnv['recips'])
2884         );
2885
2886         $body = bb2diaspora($item['body']);
2887         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2888
2889         $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';'
2890                 . $created . ';' . $myaddr . ';' . $cnv['guid'];
2891
2892         $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2893
2894         $msg = array(
2895                 'guid' => xmlify($item['guid']),
2896                 'parent_guid' => xmlify($cnv['guid']),
2897                 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
2898                 'author_signature' => xmlify($sig),
2899                 'text' => xmlify($body),
2900                 'created_at' => xmlify($created),
2901                 'diaspora_handle' => xmlify($myaddr),
2902                 'conversation_guid' => xmlify($cnv['guid'])
2903         );
2904
2905         if($item['reply']) {
2906                 $tpl = get_markup_template('diaspora_message.tpl');
2907                 $xmsg = replace_macros($tpl, array('$msg' => $msg));
2908         }
2909         else {
2910                 $conv['messages'] = array($msg);
2911                 $tpl = get_markup_template('diaspora_conversation.tpl');
2912                 $xmsg = replace_macros($tpl, array('$conv' => $conv));
2913         }
2914
2915         logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
2916
2917         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
2918         //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false));
2919
2920         return(diaspora_transmit($owner,$contact,$slap,false));
2921
2922
2923 }
2924
2925 function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) {
2926
2927         $enabled = intval(get_config('system','diaspora_enabled'));
2928         if(! $enabled) {
2929                 return 200;
2930         }
2931
2932         $a = get_app();
2933         $logid = random_string(4);
2934         $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
2935         if(! $dest_url) {
2936                 logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
2937                 return 0;
2938         }
2939
2940         logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
2941
2942         if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) {
2943                 $return_code = 0;
2944         }
2945         else {
2946                 if (!intval(get_config('system','diaspora_test'))) {
2947                         post_url($dest_url . '/', $slap);
2948                         $return_code = $a->get_curl_code();
2949                 } else {
2950                         logger('diaspora_transmit: test_mode');
2951                         return 200;
2952                 }
2953         }
2954
2955         logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
2956
2957         if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
2958                 logger('diaspora_transmit: queue message');
2959
2960                 $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
2961                         intval($contact['id']),
2962                         dbesc(NETWORK_DIASPORA),
2963                         dbesc($slap),
2964                         intval($public_batch)
2965                 );
2966                 if(count($r)) {
2967                         logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
2968                 }
2969                 else {
2970                         // queue message for redelivery
2971                         add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
2972                 }
2973         }
2974
2975
2976         return(($return_code) ? $return_code : (-1));
2977 }
2978
2979