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
  11 function diaspora_dispatch_public($msg) {
  12
  13         $enabled = intval(get_config('system','diaspora_enabled'));
  14         if(! $enabled) {
  15                 logger('mod-diaspora: disabled');
  16                 return;
  17         }
  18
  19         $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
  20                 ( SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s' )
  21                 AND `account_expired` = 0 AND `account_removed` = 0 ",
  22                 dbesc(NETWORK_DIASPORA),
  23                 dbesc($msg['author'])
  24         );
  25         if(count($r)) {
  26                 foreach($r as $rr) {
  27                         logger('diaspora_public: delivering to: ' . $rr['username']);
  28                         diaspora_dispatch($rr,$msg);
  29                 }
  30         }
  31         else
  32                 logger('diaspora_public: no subscribers');
  33 }
  34
  35
  36
  37 function diaspora_dispatch($importer,$msg,$attempt=1) {
  38
  39         $ret = 0;
  40
  41         $enabled = intval(get_config('system','diaspora_enabled'));
  42         if(! $enabled) {
  43                 logger('mod-diaspora: disabled');
  44                 return;
  45         }
  46
  47         // php doesn't like dashes in variable names
  48
  49         $msg['message'] = str_replace(
  50                         array('<activity_streams-photo>','</activity_streams-photo>'),
  51                         array('<asphoto>','</asphoto>'),
  52                         $msg['message']);
  53
  54
  55         $parsed_xml = parse_xml_string($msg['message'],false);
  56
  57         $xmlbase = $parsed_xml->post;
  58
  59         logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG);
  60
  61
  62         if($xmlbase->request) {
  63                 $ret = diaspora_request($importer,$xmlbase->request);
  64         }
  65         elseif($xmlbase->status_message) {
  66                 $ret = diaspora_post($importer,$xmlbase->status_message,$msg);
  67         }
  68         elseif($xmlbase->profile) {
  69                 $ret = diaspora_profile($importer,$xmlbase->profile,$msg);
  70         }
  71         elseif($xmlbase->comment) {
  72                 $ret = diaspora_comment($importer,$xmlbase->comment,$msg);
  73         }
  74         elseif($xmlbase->like) {
  75                 $ret = diaspora_like($importer,$xmlbase->like,$msg);
  76         }
  77         elseif($xmlbase->asphoto) {
  78                 $ret = diaspora_asphoto($importer,$xmlbase->asphoto,$msg);
  79         }
  80         elseif($xmlbase->reshare) {
  81                 $ret = diaspora_reshare($importer,$xmlbase->reshare,$msg);
  82         }
  83         elseif($xmlbase->retraction) {
  84                 $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg);
  85         }
  86         elseif($xmlbase->signed_retraction) {
  87                 $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg);
  88         }
  89         elseif($xmlbase->relayable_retraction) {
  90                 $ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg);
  91         }
  92         elseif($xmlbase->photo) {
  93                 $ret = diaspora_photo($importer,$xmlbase->photo,$msg,$attempt);
  94         }
  95         elseif($xmlbase->conversation) {
  96                 $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg);
  97         }
  98         elseif($xmlbase->message) {
  99                 $ret = diaspora_message($importer,$xmlbase->message,$msg);
 100         }
 101         else {
 102                 logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
 103         }
 104         return $ret;
 105 }
 106
 107 function diaspora_handle_from_contact($contact_id) {
 108         $handle = False;
 109
 110         logger("diaspora_handle_from_contact: contact id is " . $contact_id, LOGGER_DEBUG);
 111
 112         $r = q("SELECT network, addr, self, url, nick FROM contact WHERE id = %d",
 113                intval($contact_id)
 114         );
 115         if($r) {
 116                 $contact = $r[0];
 117
 118                 logger("diaspora_handle_from_contact: contact 'self' = " . $contact['self'] . " 'url' = " . $contact['url'], LOGGER_DEBUG);
 119
 120                 if($contact['network'] === NETWORK_DIASPORA) {
 121                         $handle = $contact['addr'];
 122
 123 //                      logger("diaspora_handle_from_contact: contact id is a Diaspora person, handle = " . $handle, LOGGER_DEBUG);
 124                 }
 125                 elseif(($contact['network'] === NETWORK_DFRN) || ($contact['self'] == 1)) {
 126                         $baseurl_start = strpos($contact['url'],'://') + 3;
 127                         $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
 128                         $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
 129                         $handle = $contact['nick'] . '@' . $baseurl;
 130
 131 //                      logger("diaspora_handle_from_contact: contact id is a DFRN person, handle = " . $handle, LOGGER_DEBUG);
 132                 }
 133         }
 134
 135         return $handle;
 136 }
 137
 138 function diaspora_get_contact_by_handle($uid,$handle) {
 139         $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
 140                 dbesc(NETWORK_DIASPORA),
 141                 intval($uid),
 142                 dbesc($handle)
 143         );
 144         if($r && count($r))
 145                 return $r[0];
 146
 147         $handle_parts = explode("@", $handle);
 148         $nurl_sql = '%%://' . $handle_parts[1] . '%%/profile/' . $handle_parts[0];
 149         $r = q("SELECT * FROM contact WHERE network = '%s' AND uid = %d AND nurl LIKE '%s' LIMIT 1",
 150                dbesc(NETWORK_DFRN),
 151                intval($uid),
 152                dbesc($nurl_sql)
 153         );
 154         if($r && count($r))
 155                 return $r[0];
 156
 157         return false;
 158 }
 159
 160 function find_diaspora_person_by_handle($handle) {
 161
 162         $person = false;
 163         $update = false;
 164         $got_lock = false;
 165
 166         $endlessloop = 0;
 167         $maxloops = 10;
 168
 169         do {
 170                 $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
 171                         dbesc(NETWORK_DIASPORA),
 172                         dbesc($handle)
 173                 );
 174                 if(count($r)) {
 175                         $person = $r[0];
 176                         logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
 177
 178                         // update record occasionally so it doesn't get stale
 179                         $d = strtotime($person['updated'] . ' +00:00');
 180                         if($d < strtotime('now - 14 days'))
 181                                 $update = true;
 182                 }
 183
 184
 185                 // FETCHING PERSON INFORMATION FROM REMOTE SERVER
 186                 //
 187                 // If the person isn't in our 'fcontact' table, or if he/she is but
 188                 // his/her information hasn't been updated for more than 14 days, then
 189                 // we want to fetch the person's information from the remote server.
 190                 //
 191                 // Note that $person isn't changed by this block of code unless the
 192                 // person's information has been successfully fetched from the remote
 193                 // server. So if $person was 'false' to begin with (because he/she wasn't
 194                 // in the local cache), it'll stay false, and if $person held the local
 195                 // cache information to begin with, it'll keep that information. That way
 196                 // if there's a problem with the remote fetch, we can at least use our
 197                 // cached information--it's better than nothing.
 198
 199                 if((! $person) || ($update))  {
 200                         // Lock the function to prevent race conditions if multiple items
 201                         // come in at the same time from a person who doesn't exist in
 202                         // fcontact
 203                         //
 204                         // Don't loop forever. On the last loop, try to create the contact
 205                         // whether the function is locked or not. Maybe the locking thread
 206                         // has died or something. At any rate, a duplicate in 'fcontact'
 207                         // is a much smaller problem than a deadlocked thread
 208                         $got_lock = lock_function('find_diaspora_person_by_handle', false);
 209                         if(($endlessloop + 1) >= $maxloops)
 210                                 $got_lock = true;
 211
 212                         if($got_lock) {
 213                                 logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG);
 214                                 require_once('include/Scrape.php');
 215                                 $r = probe_url($handle, PROBE_DIASPORA);
 216
 217                                 // Note that Friendica contacts can return a "Diaspora person"
 218                                 // if Diaspora connectivity is enabled on their server
 219                                 if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
 220                                         add_fcontact($r,$update);
 221                                         $person = ($r);
 222                                 }
 223
 224                                 unlock_function('find_diaspora_person_by_handle');
 225                         }
 226                         else {
 227                                 logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG);
 228                                 if(! $person)
 229                                         block_on_function_lock('find_diaspora_person_by_handle');
 230                         }
 231                 }
 232         } while((! $person) && (! $got_lock) && (++$endlessloop < $maxloops));
 233         // We need to try again if the person wasn't in 'fcontact' but the function was locked.
 234         // The fact that the function was locked may mean that another process was creating the
 235         // person's record. It could also mean another process was creating or updating an unrelated
 236         // person.
 237         //
 238         // At any rate, we need to keep trying until we've either got the person or had a chance to
 239         // try to fetch his/her remote information. But we don't want to block on locking the
 240         // function, because if the other process is creating the record, then when we acquire the lock
 241         // we'll dive right into creating another, duplicate record. We DO want to at least wait
 242         // until the lock is released, so we don't flood the database with requests.
 243         //
 244         // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since
 245         // we do have some information for the person
 246
 247         return $person;
 248 }
 249
 250
 251 function get_diaspora_key($uri) {
 252         logger('Fetching diaspora key for: ' . $uri);
 253
 254         $r = find_diaspora_person_by_handle($uri);
 255         if($r)
 256                 return $r['pubkey'];
 257         return '';
 258 }
 259
 260
 261 function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) {
 262         $a = get_app();
 263
 264         logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA);
 265
 266
 267         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 268
 269 //      $b64_data = base64_encode($msg);
 270 //      $b64url_data = base64url_encode($b64_data);
 271
 272         $b64url_data = base64url_encode($msg);
 273
 274         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 275
 276         $type = 'application/xml';
 277         $encoding = 'base64url';
 278         $alg = 'RSA-SHA256';
 279
 280         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 281                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 282
 283         $signature = rsa_sign($signable_data,$prvkey);
 284         $sig = base64url_encode($signature);
 285
 286 $magic_env = <<< EOT
 287 <?xml version='1.0' encoding='UTF-8'?>
 288 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 289   <header>
 290     <author_id>$handle</author_id>
 291   </header>
 292   <me:env>
 293     <me:encoding>base64url</me:encoding>
 294     <me:alg>RSA-SHA256</me:alg>
 295     <me:data type="application/xml">$data</me:data>
 296     <me:sig>$sig</me:sig>
 297   </me:env>
 298 </diaspora>
 299 EOT;
 300
 301         logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 302         return $magic_env;
 303
 304 }
 305
 306
 307
 308
 309 function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) {
 310         $a = get_app();
 311
 312         if($public)
 313                 return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey);
 314
 315         logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
 316
 317         // without a public key nothing will work
 318
 319         if(! $pubkey) {
 320                 logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['id']);
 321                 return '';
 322         }
 323
 324         $inner_aes_key = random_string(32);
 325         $b_inner_aes_key = base64_encode($inner_aes_key);
 326         $inner_iv = random_string(16);
 327         $b_inner_iv = base64_encode($inner_iv);
 328
 329         $outer_aes_key = random_string(32);
 330         $b_outer_aes_key = base64_encode($outer_aes_key);
 331         $outer_iv = random_string(16);
 332         $b_outer_iv = base64_encode($outer_iv);
 333
 334         $handle = $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
 335
 336         $padded_data = pkcs5_pad($msg,16);
 337         $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
 338
 339         $b64_data = base64_encode($inner_encrypted);
 340
 341
 342         $b64url_data = base64url_encode($b64_data);
 343         $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
 344
 345         $type = 'application/xml';
 346         $encoding = 'base64url';
 347         $alg = 'RSA-SHA256';
 348
 349         $signable_data = $data  . '.' . base64url_encode($type) . '.'
 350                 . base64url_encode($encoding) . '.' . base64url_encode($alg) ;
 351
 352         $signature = rsa_sign($signable_data,$prvkey);
 353         $sig = base64url_encode($signature);
 354
 355 $decrypted_header = <<< EOT
 356 <decrypted_header>
 357   <iv>$b_inner_iv</iv>
 358   <aes_key>$b_inner_aes_key</aes_key>
 359   <author_id>$handle</author_id>
 360 </decrypted_header>
 361 EOT;
 362
 363         $decrypted_header = pkcs5_pad($decrypted_header,16);
 364
 365         $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
 366
 367         $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
 368
 369         $encrypted_outer_key_bundle = '';
 370         openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
 371
 372         $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
 373
 374         logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
 375
 376         $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
 377                 'ciphertext' => base64_encode($ciphertext)));
 378         $cipher_json = base64_encode($encrypted_header_json_object);
 379
 380         $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
 381
 382 $magic_env = <<< EOT
 383 <?xml version='1.0' encoding='UTF-8'?>
 384 <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
 385   $encrypted_header
 386   <me:env>
 387     <me:encoding>base64url</me:encoding>
 388     <me:alg>RSA-SHA256</me:alg>
 389     <me:data type="application/xml">$data</me:data>
 390     <me:sig>$sig</me:sig>
 391   </me:env>
 392 </diaspora>
 393 EOT;
 394
 395         logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
 396         return $magic_env;
 397
 398 }
 399
 400 /**
 401  *
 402  * diaspora_decode($importer,$xml)
 403  *   array $importer -> from user table
 404  *   string $xml -> urldecoded Diaspora salmon
 405  *
 406  * Returns array
 407  * 'message' -> decoded Diaspora XML message
 408  * 'author' -> author diaspora handle
 409  * 'key' -> author public key (converted to pkcs#8)
 410  *
 411  * Author and key are used elsewhere to save a lookup for verifying replies and likes
 412  */
 413
 414
 415 function diaspora_decode($importer,$xml) {
 416
 417         $public = false;
 418         $basedom = parse_xml_string($xml);
 419
 420         $children = $basedom->children('https://joindiaspora.com/protocol');
 421
 422         if($children->header) {
 423                 $public = true;
 424                 $author_link = str_replace('acct:','',$children->header->author_id);
 425         }
 426         else {
 427
 428                 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
 429
 430                 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
 431                 $ciphertext = base64_decode($encrypted_header->ciphertext);
 432
 433                 $outer_key_bundle = '';
 434                 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
 435
 436                 $j_outer_key_bundle = json_decode($outer_key_bundle);
 437
 438                 $outer_iv = base64_decode($j_outer_key_bundle->iv);
 439                 $outer_key = base64_decode($j_outer_key_bundle->key);
 440
 441                 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
 442
 443
 444                 $decrypted = pkcs5_unpad($decrypted);
 445
 446                 /**
 447                  * $decrypted now contains something like
 448                  *
 449                  *  <decrypted_header>
 450                  *     <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
 451                  *     <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
 452
 453 ***** OBSOLETE
 454
 455                  *     <author>
 456                  *       <name>Ryan Hughes</name>
 457                  *       <uri>acct:galaxor@diaspora.pirateship.org</uri>
 458                  *     </author>
 459
 460 ***** CURRENT
 461
 462                  *     <author_id>galaxor@diaspora.priateship.org</author_id>
 463
 464 ***** END DIFFS
 465
 466                  *  </decrypted_header>
 467                  */
 468
 469                 logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
 470                 $idom = parse_xml_string($decrypted,false);
 471
 472                 $inner_iv = base64_decode($idom->iv);
 473                 $inner_aes_key = base64_decode($idom->aes_key);
 474
 475                 $author_link = str_replace('acct:','',$idom->author_id);
 476
 477         }
 478
 479         $dom = $basedom->children(NAMESPACE_SALMON_ME);
 480
 481         // figure out where in the DOM tree our data is hiding
 482
 483         if($dom->provenance->data)
 484                 $base = $dom->provenance;
 485         elseif($dom->env->data)
 486                 $base = $dom->env;
 487         elseif($dom->data)
 488                 $base = $dom;
 489
 490         if(! $base) {
 491                 logger('mod-diaspora: unable to locate salmon data in xml ');
 492                 http_status_exit(400);
 493         }
 494
 495
 496         // Stash the signature away for now. We have to find their key or it won't be good for anything.
 497         $signature = base64url_decode($base->sig);
 498
 499         // unpack the  data
 500
 501         // strip whitespace so our data element will return to one big base64 blob
 502         $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
 503
 504
 505         // stash away some other stuff for later
 506
 507         $type = $base->data[0]->attributes()->type[0];
 508         $keyhash = $base->sig[0]->attributes()->keyhash[0];
 509         $encoding = $base->encoding;
 510         $alg = $base->alg;
 511
 512
 513         $signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 514
 515
 516         // decode the data
 517         $data = base64url_decode($data);
 518
 519
 520         if($public) {
 521                 $inner_decrypted = $data;
 522         }
 523         else {
 524
 525                 // Decode the encrypted blob
 526
 527                 $inner_encrypted = base64_decode($data);
 528                 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
 529                 $inner_decrypted = pkcs5_unpad($inner_decrypted);
 530         }
 531
 532         if(! $author_link) {
 533                 logger('mod-diaspora: Could not retrieve author URI.');
 534                 http_status_exit(400);
 535         }
 536
 537         // Once we have the author URI, go to the web and try to find their public key
 538         // (first this will look it up locally if it is in the fcontact cache)
 539         // This will also convert diaspora public key from pkcs#1 to pkcs#8
 540
 541         logger('mod-diaspora: Fetching key for ' . $author_link );
 542         $key = get_diaspora_key($author_link);
 543
 544         if(! $key) {
 545                 logger('mod-diaspora: Could not retrieve author key.');
 546                 http_status_exit(400);
 547         }
 548
 549         $verify = rsa_verify($signed_data,$signature,$key);
 550
 551         if(! $verify) {
 552                 logger('mod-diaspora: Message did not verify. Discarding.');
 553                 http_status_exit(400);
 554         }
 555
 556         logger('mod-diaspora: Message verified.');
 557
 558         return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
 559
 560 }
 561
 562
 563 function diaspora_request($importer,$xml) {
 564
 565         $a = get_app();
 566
 567         $sender_handle = unxmlify($xml->sender_handle);
 568         $recipient_handle = unxmlify($xml->recipient_handle);
 569
 570         if(! $sender_handle || ! $recipient_handle)
 571                 return;
 572
 573         $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 574
 575         if($contact) {
 576
 577                 // perhaps we were already sharing with this person. Now they're sharing with us.
 578                 // That makes us friends.
 579
 580                 if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 581                         q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 582                                 intval(CONTACT_IS_FRIEND),
 583                                 intval($contact['id']),
 584                                 intval($importer['uid'])
 585                         );
 586                 }
 587                 // send notification
 588
 589                 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
 590                         intval($importer['uid'])
 591                 );
 592
 593                 if((count($r)) && (!$r[0]['hide-friends']) && (!$contact['hidden']) && intval(get_pconfig($importer['uid'],'system','post_newfriend'))) {
 594                         require_once('include/items.php');
 595
 596                         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 597                                 intval($importer['uid'])
 598                         );
 599
 600                         // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
 601
 602                         if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) {
 603
 604                                 $arr = array();
 605                                 $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']);
 606                                 $arr['uid'] = $importer['uid'];
 607                                 $arr['contact-id'] = $self[0]['id'];
 608                                 $arr['wall'] = 1;
 609                                 $arr['type'] = 'wall';
 610                                 $arr['gravity'] = 0;
 611                                 $arr['origin'] = 1;
 612                                 $arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
 613                                 $arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
 614                                 $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
 615                                 $arr['verb'] = ACTIVITY_FRIEND;
 616                                 $arr['object-type'] = ACTIVITY_OBJ_PERSON;
 617
 618                                 $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]';
 619                                 $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
 620                                 $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';
 621                                 $arr['body'] =  sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto;
 622
 623                                 $arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
 624                                         . '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
 625                                 $arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
 626                                 $arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
 627                                 $arr['object'] .= '</link></object>' . "\n";
 628                                 $arr['last-child'] = 1;
 629
 630                                 $arr['allow_cid'] = $user[0]['allow_cid'];
 631                                 $arr['allow_gid'] = $user[0]['allow_gid'];
 632                                 $arr['deny_cid']  = $user[0]['deny_cid'];
 633                                 $arr['deny_gid']  = $user[0]['deny_gid'];
 634
 635                                 $i = item_store($arr);
 636                                 if($i)
 637                                 proc_run('php',"include/notifier.php","activity","$i");
 638
 639                         }
 640
 641                 }
 642
 643                 return;
 644         }
 645
 646         $ret = find_diaspora_person_by_handle($sender_handle);
 647
 648
 649         if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
 650                 logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
 651                 return;
 652         }
 653
 654         $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public');
 655
 656
 657
 658         $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
 659                 VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
 660                 intval($importer['uid']),
 661                 dbesc($ret['network']),
 662                 dbesc($ret['addr']),
 663                 datetime_convert(),
 664                 dbesc($ret['url']),
 665                 dbesc(normalise_link($ret['url'])),
 666                 dbesc($batch),
 667                 dbesc($ret['name']),
 668                 dbesc($ret['nick']),
 669                 dbesc($ret['photo']),
 670                 dbesc($ret['pubkey']),
 671                 dbesc($ret['notify']),
 672                 dbesc($ret['poll']),
 673                 1,
 674                 2
 675         );
 676
 677         // find the contact record we just created
 678
 679         $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
 680
 681         if(! $contact_record) {
 682                 logger('diaspora_request: unable to locate newly created contact record.');
 683                 return;
 684         }
 685
 686         $g = q("select def_gid from user where uid = %d limit 1",
 687                 intval($importer['uid'])
 688         );
 689         if($g && intval($g[0]['def_gid'])) {
 690                 require_once('include/group.php');
 691                 group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']);
 692         }
 693
 694         if($importer['page-flags'] == PAGE_NORMAL) {
 695
 696                 $hash = random_string() . (string) time();   // Generate a confirm_key
 697
 698                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
 699                         VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
 700                         intval($importer['uid']),
 701                         intval($contact_record['id']),
 702                         0,
 703                         0,
 704                         dbesc( t('Sharing notification from Diaspora network')),
 705                         dbesc($hash),
 706                         dbesc(datetime_convert())
 707                 );
 708         }
 709         else {
 710
 711                 // automatic friend approval
 712
 713                 require_once('include/Photo.php');
 714
 715                 $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']);
 716
 717                 // technically they are sharing with us (CONTACT_IS_SHARING),
 718                 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
 719                 // we are going to change the relationship and make them a follower.
 720
 721                 if($importer['page-flags'] == PAGE_FREELOVE)
 722                         $new_relation = CONTACT_IS_FRIEND;
 723                 else
 724                         $new_relation = CONTACT_IS_FOLLOWER;
 725
 726                 $r = q("UPDATE `contact` SET
 727                         `photo` = '%s',
 728                         `thumb` = '%s',
 729                         `micro` = '%s',
 730                         `rel` = %d,
 731                         `name-date` = '%s',
 732                         `uri-date` = '%s',
 733                         `avatar-date` = '%s',
 734                         `blocked` = 0,
 735                         `pending` = 0
 736                         WHERE `id` = %d
 737                         ",
 738                         dbesc($photos[0]),
 739                         dbesc($photos[1]),
 740                         dbesc($photos[2]),
 741                         intval($new_relation),
 742                         dbesc(datetime_convert()),
 743                         dbesc(datetime_convert()),
 744                         dbesc(datetime_convert()),
 745                         intval($contact_record['id'])
 746                 );
 747
 748                 $u = q("select * from user where uid = %d limit 1",intval($importer['uid']));
 749                 if($u)
 750                         $ret = diaspora_share($u[0],$contact_record);
 751         }
 752
 753         return;
 754 }
 755
 756 function diaspora_post_allow($importer,$contact) {
 757
 758         // perhaps we were already sharing with this person. Now they're sharing with us.
 759         // That makes us friends.
 760         // Normally this should have handled by getting a request - but this could get lost
 761         if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) {
 762                 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
 763                         intval(CONTACT_IS_FRIEND),
 764                         intval($contact['id']),
 765                         intval($importer['uid'])
 766                 );
 767                 $contact['rel'] = CONTACT_IS_FRIEND;
 768                 logger('diaspora_post_allow: defining user '.$contact["nick"].' as friend');
 769         }
 770
 771         if(($contact['blocked']) || ($contact['readonly']) || ($contact['archive']))
 772                 return false;
 773         if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND)
 774                 return true;
 775         if($contact['rel'] == CONTACT_IS_FOLLOWER)
 776                 if($importer['page-flags'] == PAGE_COMMUNITY)
 777                         return true;
 778         return false;
 779 }
 780
 781
 782 function diaspora_post($importer,$xml,$msg) {
 783
 784         $a = get_app();
 785         $guid = notags(unxmlify($xml->guid));
 786         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
 787
 788         if($diaspora_handle != $msg['author']) {
 789                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
 790                 return 202;
 791         }
 792
 793         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
 794         if(! $contact)
 795                 return;
 796
 797         if(! diaspora_post_allow($importer,$contact)) {
 798                 logger('diaspora_post: Ignoring this author.');
 799                 return 202;
 800         }
 801
 802         $message_id = $diaspora_handle . ':' . $guid;
 803         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 804                 intval($importer['uid']),
 805                 dbesc($message_id),
 806                 dbesc($guid)
 807         );
 808         if(count($r)) {
 809                 logger('diaspora_post: message exists: ' . $guid);
 810                 return;
 811         }
 812
 813         // allocate a guid on our system - we aren't fixing any collisions.
 814         // we're ignoring them
 815
 816         $g = q("select * from guid where guid = '%s' limit 1",
 817                 dbesc($guid)
 818         );
 819         if(! count($g)) {
 820                 q("insert into guid ( guid ) values ( '%s' )",
 821                         dbesc($guid)
 822                 );
 823         }
 824
 825         $created = unxmlify($xml->created_at);
 826         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
 827
 828         $body = diaspora2bb($xml->raw_message);
 829
 830         // Add OEmbed and other information to the body
 831         $body = add_page_info_to_body($body, false, true);
 832
 833         $datarray = array();
 834
 835         $str_tags = '';
 836
 837         $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER);
 838         if($cnt) {
 839                 foreach($matches as $mtch) {
 840                         if(strlen($str_tags))
 841                                 $str_tags .= ',';
 842                         $str_tags .= '@[url=' . $mtch[1] . '[/url]';
 843                 }
 844         }
 845
 846         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
 847
 848         $datarray['uid'] = $importer['uid'];
 849         $datarray['contact-id'] = $contact['id'];
 850         $datarray['wall'] = 0;
 851         $datarray['network'] = NETWORK_DIASPORA;
 852         $datarray['verb'] = ACTIVITY_POST;
 853         $datarray['guid'] = $guid;
 854         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 855         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 856         $datarray['private'] = $private;
 857         $datarray['parent'] = 0;
 858         $datarray['plink'] = $plink;
 859         $datarray['owner-name'] = $contact['name'];
 860         $datarray['owner-link'] = $contact['url'];
 861         //$datarray['owner-avatar'] = $contact['thumb'];
 862         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
 863         $datarray['author-name'] = $contact['name'];
 864         $datarray['author-link'] = $contact['url'];
 865         $datarray['author-avatar'] = $contact['thumb'];
 866         $datarray['body'] = $body;
 867         $datarray['tag'] = $str_tags;
 868         $datarray['app']  = 'Diaspora';
 869
 870         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible.
 871
 872         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 873
 874         DiasporaFetchGuid($datarray);
 875         $message_id = item_store($datarray);
 876
 877         return;
 878
 879 }
 880
 881 function DiasporaFetchGuid($item) {
 882         preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
 883                 function ($match) use ($item){
 884                         return(DiasporaFetchGuidSub($match, $item));
 885                 },$item["body"]);
 886 }
 887
 888 function DiasporaFetchGuidSub($match, $item) {
 889         $a = get_app();
 890
 891         $author = parse_url($item["author-link"]);
 892         $authorserver = $author["scheme"]."://".$author["host"];
 893
 894         $owner = parse_url($item["owner-link"]);
 895         $ownerserver = $owner["scheme"]."://".$owner["host"];
 896
 897         if (!diaspora_store_by_guid($match[1], $authorserver))
 898                 diaspora_store_by_guid($match[1], $ownerserver);
 899 }
 900
 901 function diaspora_store_by_guid($guid, $server) {
 902         require_once("include/Contact.php");
 903
 904         logger("fetching item ".$guid." from ".$server, LOGGER_DEBUG);
 905
 906         $item = diaspora_fetch_message($guid, $server);
 907
 908         if (!$item)
 909                 return false;
 910
 911         $body = $item["body"];
 912         $str_tags = $item["tag"];
 913         $app = $item["app"];
 914         $created = $item["created"];
 915         $author = $item["author"];
 916         $guid = $item["guid"];
 917         $private = $item["private"];
 918
 919         $message_id = $author.':'.$guid;
 920         $r = q("SELECT `id` FROM `item` WHERE `uid` = 0 AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
 921                 dbesc($message_id),
 922                 dbesc($guid)
 923         );
 924         if(count($r))
 925                 return $r[0]["id"];
 926
 927         $person = find_diaspora_person_by_handle($author);
 928
 929         $datarray = array();
 930         $datarray['uid'] = 0;
 931         $datarray['contact-id'] = get_contact($person['url'], 0);
 932         $datarray['wall'] = 0;
 933         $datarray['network']  = NETWORK_DIASPORA;
 934         $datarray['guid'] = $guid;
 935         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
 936         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
 937         $datarray['private'] = $private;
 938         $datarray['parent'] = 0;
 939         $datarray['plink'] = 'https://'.substr($author,strpos($author,'@')+1).'/posts/'.$guid;
 940         $datarray['author-name'] = $person['name'];
 941         $datarray['author-link'] = $person['url'];
 942         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
 943         $datarray['owner-name'] = $datarray['author-name'];
 944         $datarray['owner-link'] = $datarray['author-link'];
 945         $datarray['owner-avatar'] = $datarray['author-avatar'];
 946         $datarray['body'] = $body;
 947         $datarray['tag'] = $str_tags;
 948         $datarray['app']  = $app;
 949         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
 950
 951         DiasporaFetchGuid($datarray);
 952         $message_id = item_store($datarray);
 953
 954         // To-Do:
 955         // Looking if there is some subscribe mechanism in Diaspora to get all comments for this post
 956
 957         return $message_id;
 958 }
 959
 960 function diaspora_fetch_message($guid, $server, $level = 0) {
 961
 962         if ($level > 5)
 963                 return false;
 964
 965         $a = get_app();
 966
 967         // This will not work if the server is not a Diaspora server
 968         $source_url = $server.'/p/'.$guid.'.xml';
 969         $x = fetch_url($source_url);
 970         if(!$x)
 971                 return false;
 972
 973         $x = str_replace(array('<activity_streams-photo>','</activity_streams-photo>'),array('<asphoto>','</asphoto>'),$x);
 974         $source_xml = parse_xml_string($x,false);
 975
 976         $item = array();
 977         $item["app"] = 'Diaspora';
 978         $item["guid"] = $guid;
 979         $body = "";
 980
 981         if ($source_xml->post->status_message->created_at)
 982                 $item["created"] = unxmlify($source_xml->post->status_message->created_at);
 983
 984         if ($source_xml->post->status_message->provider_display_name)
 985                 $item["app"] = unxmlify($source_xml->post->status_message->provider_display_name);
 986
 987         if ($source_xml->post->status_message->diaspora_handle)
 988                 $item["author"] = unxmlify($source_xml->post->status_message->diaspora_handle);
 989
 990         if ($source_xml->post->status_message->guid)
 991                 $item["guid"] = unxmlify($source_xml->post->status_message->guid);
 992
 993         $item["private"] = (unxmlify($source_xml->post->status_message->public) == 'false');
 994
 995         if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) {
 996                 $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n";
 997                 $body = scale_external_images($body,false);
 998         } elseif($source_xml->post->asphoto->image_url) {
 999                 $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n";
1000                 $body = scale_external_images($body);
1001         } elseif($source_xml->post->status_message) {
1002                 $body = diaspora2bb($source_xml->post->status_message->raw_message);
1003
1004                 // Checking for embedded pictures
1005                 if($source_xml->post->status_message->photo->remote_photo_path AND
1006                         $source_xml->post->status_message->photo->remote_photo_name) {
1007
1008                         $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path));
1009                         $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name));
1010
1011                         $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body;
1012
1013                         logger('embedded picture link found: '.$body, LOGGER_DEBUG);
1014                 }
1015
1016                 $body = scale_external_images($body);
1017
1018                 // Add OEmbed and other information to the body
1019                 $body = add_page_info_to_body($body, false, true);
1020         } elseif($source_xml->post->reshare) {
1021                 // Reshare of a reshare
1022                 return diaspora_fetch_message($source_xml->post->reshare->root_guid, $server, ++$level);
1023         } else {
1024                 // Maybe it is a reshare of a photo that will be delivered at a later time (testing)
1025                 logger('no content found: '.print_r($source_xml,true));
1026                 $body = "";
1027         }
1028
1029         if ($body == "")
1030                 return false;
1031
1032         $item["tag"] = '';
1033         $item["body"] = $body;
1034
1035         return $item;
1036 }
1037
1038 function diaspora_reshare($importer,$xml,$msg) {
1039
1040         logger('diaspora_reshare: init: ' . print_r($xml,true));
1041
1042         $a = get_app();
1043         $guid = notags(unxmlify($xml->guid));
1044         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1045
1046
1047         if($diaspora_handle != $msg['author']) {
1048                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1049                 return 202;
1050         }
1051
1052         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1053         if(! $contact)
1054                 return;
1055
1056         if(! diaspora_post_allow($importer,$contact)) {
1057                 logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
1058                 return 202;
1059         }
1060
1061         $message_id = $diaspora_handle . ':' . $guid;
1062         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1063                 intval($importer['uid']),
1064                 dbesc($message_id),
1065                 dbesc($guid)
1066         );
1067         if(count($r)) {
1068                 logger('diaspora_reshare: message exists: ' . $guid);
1069                 return;
1070         }
1071
1072         $orig_author = notags(unxmlify($xml->root_diaspora_id));
1073         $orig_guid = notags(unxmlify($xml->root_guid));
1074
1075         $create_original_post = false;
1076
1077         // Do we already have this item?
1078         $r = q("SELECT `body`, `tag`, `app`, `created`, `author-link`, `plink` FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1079                 dbesc($orig_guid),
1080                 dbesc(NETWORK_DIASPORA)
1081         );
1082         if(count($r)) {
1083                 logger('reshared message '.orig_guid." reshared by ".$guid.' already exists on system: '.$orig_url);
1084
1085                 // Maybe it is already a reshared item?
1086                 // Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
1087                 require_once('include/api.php');
1088                 if (api_share_as_retweet($r[0]))
1089                         $r = array();
1090                 else {
1091                         $body = $r[0]["body"];
1092                         $str_tags = $r[0]["tag"];
1093                         $app = $r[0]["app"];
1094                         $orig_created = $r[0]["created"];
1095                         $orig_author = $r[0]["author-link"];
1096                         $create_original_post = ($body != "");
1097                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1098                 }
1099         }
1100
1101         if (!count($r)) {
1102                 $body = "";
1103                 $str_tags = "";
1104                 $app = "";
1105
1106                 $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1107
1108                 $server = 'https://'.substr($orig_author,strpos($orig_author,'@')+1);
1109                 logger('1st try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1110                 $item = diaspora_fetch_message($orig_guid, $server);
1111
1112                 if (!$item) {
1113                         $server = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1114                         logger('2nd try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1115                         $item = diaspora_fetch_message($orig_guid, $server);
1116                 }
1117                 if (!$item) {
1118                         $server = 'http://'.substr($orig_author,strpos($orig_author,'@')+1);
1119                         logger('3rd try: reshared message '.$orig_guid." reshared by ".$guid.' will be fetched from original server: '.$server);
1120                         $item = diaspora_fetch_message($orig_guid, $server);
1121                 }
1122                 if (!$item) {
1123                         $server = 'http://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1);
1124                         logger('4th try: reshared message '.$orig_guid." reshared by ".$guid." will be fetched from sharer's server: ".$server);
1125                         $item = diaspora_fetch_message($orig_guid, $server);
1126                 }
1127
1128                 if ($item) {
1129                         $body = $item["body"];
1130                         $str_tags = $item["tag"];
1131                         $app = $item["app"];
1132                         $orig_created = $item["created"];
1133                         $orig_author = $item["author"];
1134                         $orig_guid = $item["guid"];
1135                         $create_original_post = ($body != "");
1136                         $orig_url = $a->get_baseurl()."/display/".$orig_guid;
1137                 }
1138         }
1139
1140         $person = find_diaspora_person_by_handle($orig_author);
1141
1142         // allocate a guid on our system - we aren't fixing any collisions.
1143         // we're ignoring them
1144
1145         $g = q("select * from guid where guid = '%s' limit 1",
1146                 dbesc($guid)
1147         );
1148         if(! count($g)) {
1149                 q("insert into guid ( guid ) values ( '%s' )",
1150                         dbesc($guid)
1151                 );
1152         }
1153
1154         $created = unxmlify($xml->created_at);
1155         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1156
1157         $datarray = array();
1158
1159         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1160
1161         $datarray['uid'] = $importer['uid'];
1162         $datarray['contact-id'] = $contact['id'];
1163         $datarray['wall'] = 0;
1164         $datarray['network']  = NETWORK_DIASPORA;
1165         $datarray['guid'] = $guid;
1166         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1167         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1168         $datarray['private'] = $private;
1169         $datarray['parent'] = 0;
1170         $datarray['plink'] = $plink;
1171         $datarray['owner-name'] = $contact['name'];
1172         $datarray['owner-link'] = $contact['url'];
1173         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1174         if (!intval(get_config('system','wall-to-wall_share'))) {
1175                 $prefix = "[share author='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$person['name']).
1176                                 "' profile='".$person['url'].
1177                                 "' avatar='".((x($person,'thumb')) ? $person['thumb'] : $person['photo']).
1178                                 "' guid='".$orig_guid.
1179                                 "' posted='".$orig_created.
1180                                 "' link='".str_replace(array("'", "[", "]"), array("&#x27;", "&#x5B;", "&#x5D;"),$orig_url)."']";
1181                 $datarray['author-name'] = $contact['name'];
1182                 $datarray['author-link'] = $contact['url'];
1183                 $datarray['author-avatar'] = $contact['thumb'];
1184                 $datarray['body'] = $prefix.$body."[/share]";
1185         } else {
1186                 // Let reshared messages look like wall-to-wall posts
1187                 $datarray['author-name'] = $person['name'];
1188                 $datarray['author-link'] = $person['url'];
1189                 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1190                 $datarray['body'] = $body;
1191         }
1192
1193         $datarray['tag'] = $str_tags;
1194         $datarray['app']  = $app;
1195
1196         // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing)
1197         $datarray['visible'] = ((strlen($body)) ? 1 : 0);
1198
1199         // Store the original item of a reshare
1200         if ($create_original_post) {
1201                 require_once("include/Contact.php");
1202
1203                 $datarray2 = $datarray;
1204
1205                 $datarray2['uid'] = 0;
1206                 $datarray2['contact-id'] = get_contact($person['url'], 0);
1207                 $datarray2['guid'] = $orig_guid;
1208                 $datarray2['uri'] = $datarray2['parent-uri'] = $orig_author.':'.$orig_guid;
1209                 $datarray2['changed'] = $datarray2['created'] = $datarray2['edited'] = datetime_convert('UTC','UTC',$orig_created);
1210                 $datarray2['plink'] = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid;
1211
1212                 $datarray2['author-name'] = $person['name'];
1213                 $datarray2['author-link'] = $person['url'];
1214                 $datarray2['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1215                 $datarray2['owner-name'] = $datarray2['author-name'];
1216                 $datarray2['owner-link'] = $datarray2['author-link'];
1217                 $datarray2['owner-avatar'] = $datarray2['author-avatar'];
1218                 $datarray2['body'] = $body;
1219
1220                 DiasporaFetchGuid($datarray2);
1221                 $message_id = item_store($datarray2);
1222
1223                 logger("Store original item ".$orig_guid." under message id ".$message_id);
1224         }
1225
1226         DiasporaFetchGuid($datarray);
1227         $message_id = item_store($datarray);
1228
1229         return;
1230
1231 }
1232
1233
1234 function diaspora_asphoto($importer,$xml,$msg) {
1235         logger('diaspora_asphoto called');
1236
1237         $a = get_app();
1238         $guid = notags(unxmlify($xml->guid));
1239         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1240
1241         if($diaspora_handle != $msg['author']) {
1242                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
1243                 return 202;
1244         }
1245
1246         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
1247         if(! $contact)
1248                 return;
1249
1250         if(! diaspora_post_allow($importer,$contact)) {
1251                 logger('diaspora_asphoto: Ignoring this author.');
1252                 return 202;
1253         }
1254
1255         $message_id = $diaspora_handle . ':' . $guid;
1256         $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
1257                 intval($importer['uid']),
1258                 dbesc($message_id),
1259                 dbesc($guid)
1260         );
1261         if(count($r)) {
1262                 logger('diaspora_asphoto: message exists: ' . $guid);
1263                 return;
1264         }
1265
1266         // allocate a guid on our system - we aren't fixing any collisions.
1267         // we're ignoring them
1268
1269         $g = q("select * from guid where guid = '%s' limit 1",
1270                 dbesc($guid)
1271         );
1272         if(! count($g)) {
1273                 q("insert into guid ( guid ) values ( '%s' )",
1274                         dbesc($guid)
1275                 );
1276         }
1277
1278         $created = unxmlify($xml->created_at);
1279         $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
1280
1281         if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) {
1282                 $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n";
1283                 $body = scale_external_images($body,false);
1284         }
1285         elseif($xml->image_url) {
1286                 $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n";
1287                 $body = scale_external_images($body);
1288         }
1289         else {
1290                 logger('diaspora_asphoto: no photo url found.');
1291                 return;
1292         }
1293
1294         $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid;
1295
1296         $datarray = array();
1297
1298         $datarray['uid'] = $importer['uid'];
1299         $datarray['contact-id'] = $contact['id'];
1300         $datarray['wall'] = 0;
1301         $datarray['network']  = NETWORK_DIASPORA;
1302         $datarray['guid'] = $guid;
1303         $datarray['uri'] = $datarray['parent-uri'] = $message_id;
1304         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
1305         $datarray['private'] = $private;
1306         $datarray['parent'] = 0;
1307         $datarray['plink'] = $plink;
1308         $datarray['owner-name'] = $contact['name'];
1309         $datarray['owner-link'] = $contact['url'];
1310         //$datarray['owner-avatar'] = $contact['thumb'];
1311         $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']);
1312         $datarray['author-name'] = $contact['name'];
1313         $datarray['author-link'] = $contact['url'];
1314         $datarray['author-avatar'] = $contact['thumb'];
1315         $datarray['body'] = $body;
1316
1317         $datarray['app']  = 'Diaspora/Cubbi.es';
1318
1319         DiasporaFetchGuid($datarray);
1320         $message_id = item_store($datarray);
1321
1322         //if($message_id) {
1323         //      q("update item set plink = '%s' where id = %d",
1324         //              dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1325         //              intval($message_id)
1326         //      );
1327         //}
1328
1329         return;
1330
1331 }
1332
1333
1334
1335
1336
1337
1338 function diaspora_comment($importer,$xml,$msg) {
1339
1340         $a = get_app();
1341         $guid = notags(unxmlify($xml->guid));
1342         $parent_guid = notags(unxmlify($xml->parent_guid));
1343         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1344         $target_type = notags(unxmlify($xml->target_type));
1345         $text = unxmlify($xml->text);
1346         $author_signature = notags(unxmlify($xml->author_signature));
1347
1348         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1349
1350         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1351         if(! $contact) {
1352                 logger('diaspora_comment: cannot find contact: ' . $msg['author']);
1353                 return;
1354         }
1355
1356         if(! diaspora_post_allow($importer,$contact)) {
1357                 logger('diaspora_comment: Ignoring this author.');
1358                 return 202;
1359         }
1360
1361         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1362                 intval($importer['uid']),
1363                 dbesc($guid)
1364         );
1365         if(count($r)) {
1366                 logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
1367                 return;
1368         }
1369
1370         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1371                 intval($importer['uid']),
1372                 dbesc($parent_guid)
1373         );
1374         if(! count($r)) {
1375                 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
1376                 return;
1377         }
1378         $parent_item = $r[0];
1379
1380
1381         /* How Diaspora performs comment signature checking:
1382
1383            - If an item has been sent by the comment author to the top-level post owner to relay on
1384              to the rest of the contacts on the top-level post, the top-level post owner should check
1385              the author_signature, then create a parent_author_signature before relaying the comment on
1386            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1387              check only the parent_author_signature. Basically, they trust that the top-level post
1388              owner has already verified the authenticity of anything he/she sends out
1389            - In either case, the signature that get checked is the signature created by the person
1390              who sent the salmon
1391         */
1392
1393         $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
1394         $key = $msg['key'];
1395
1396         if($parent_author_signature) {
1397                 // If a parent_author_signature exists, then we've received the comment
1398                 // relayed from the top-level post owner. There's no need to check the
1399                 // author_signature if the parent_author_signature is valid
1400
1401                 $parent_author_signature = base64_decode($parent_author_signature);
1402
1403                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
1404                         logger('diaspora_comment: top-level owner verification failed.');
1405                         return;
1406                 }
1407         }
1408         else {
1409                 // If there's no parent_author_signature, then we've received the comment
1410                 // from the comment creator. In that case, the person is commenting on
1411                 // our post, so he/she must be a contact of ours and his/her public key
1412                 // should be in $msg['key']
1413
1414                 $author_signature = base64_decode($author_signature);
1415
1416                 if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) {
1417                         logger('diaspora_comment: comment author verification failed.');
1418                         return;
1419                 }
1420         }
1421
1422         // Phew! Everything checks out. Now create an item.
1423
1424         // Find the original comment author information.
1425         // We need this to make sure we display the comment author
1426         // information (name and avatar) correctly.
1427         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
1428                 $person = $contact;
1429         else {
1430                 $person = find_diaspora_person_by_handle($diaspora_handle);
1431
1432                 if(! is_array($person)) {
1433                         logger('diaspora_comment: unable to find author details');
1434                         return;
1435                 }
1436         }
1437
1438         $body = diaspora2bb($text);
1439         $message_id = $diaspora_handle . ':' . $guid;
1440
1441         $datarray = array();
1442
1443         $datarray['uid'] = $importer['uid'];
1444         $datarray['contact-id'] = $contact['id'];
1445         $datarray['type'] = 'remote-comment';
1446         $datarray['wall'] = $parent_item['wall'];
1447         $datarray['network']  = NETWORK_DIASPORA;
1448         $datarray['verb'] = ACTIVITY_POST;
1449         $datarray['gravity'] = GRAVITY_COMMENT;
1450         $datarray['guid'] = $guid;
1451         $datarray['uri'] = $message_id;
1452         $datarray['parent-uri'] = $parent_item['uri'];
1453
1454         // No timestamps for comments? OK, we'll the use current time.
1455         $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert();
1456         $datarray['private'] = $parent_item['private'];
1457
1458         $datarray['owner-name'] = $parent_item['owner-name'];
1459         $datarray['owner-link'] = $parent_item['owner-link'];
1460         $datarray['owner-avatar'] = $parent_item['owner-avatar'];
1461
1462         $datarray['author-name'] = $person['name'];
1463         $datarray['author-link'] = $person['url'];
1464         $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
1465         $datarray['body'] = $body;
1466
1467         // We can't be certain what the original app is if the message is relayed.
1468         if(($parent_item['origin']) && (! $parent_author_signature))
1469                 $datarray['app']  = 'Diaspora';
1470
1471         DiasporaFetchGuid($datarray);
1472         $message_id = item_store($datarray);
1473
1474         //if($message_id) {
1475                 //q("update item set plink = '%s' where id = %d",
1476                 //      //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
1477                 //      dbesc($a->get_baseurl().'/display/'.$datarray['guid']),
1478                 //      intval($message_id)
1479                 //);
1480         //}
1481
1482         if(($parent_item['origin']) && (! $parent_author_signature)) {
1483                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1484                         intval($message_id),
1485                         dbesc($signed_data),
1486                         dbesc(base64_encode($author_signature)),
1487                         dbesc($diaspora_handle)
1488                 );
1489
1490                 // if the message isn't already being relayed, notify others
1491                 // the existence of parent_author_signature means the parent_author or owner
1492                 // is already relaying.
1493
1494                 proc_run('php','include/notifier.php','comment-import',$message_id);
1495         }
1496
1497         $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ",
1498                 dbesc($parent_item['uri']),
1499                 intval($importer['uid'])
1500         );
1501
1502         if(count($myconv)) {
1503                 $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname'];
1504
1505                 foreach($myconv as $conv) {
1506
1507                         // now if we find a match, it means we're in this conversation
1508
1509                         if(! link_compare($conv['author-link'],$importer_url))
1510                                 continue;
1511
1512                         require_once('include/enotify.php');
1513
1514                         $conv_parent = $conv['parent'];
1515
1516                         notification(array(
1517                                 'type'         => NOTIFY_COMMENT,
1518                                 'notify_flags' => $importer['notify-flags'],
1519                                 'language'     => $importer['language'],
1520                                 'to_name'      => $importer['username'],
1521                                 'to_email'     => $importer['email'],
1522                                 'uid'          => $importer['uid'],
1523                                 'item'         => $datarray,
1524                                 'link'             => $a->get_baseurl().'/display/'.urlencode($datarray['guid']),
1525                                 'source_name'  => $datarray['author-name'],
1526                                 'source_link'  => $datarray['author-link'],
1527                                 'source_photo' => $datarray['author-avatar'],
1528                                 'verb'         => ACTIVITY_POST,
1529                                 'otype'        => 'item',
1530                                 'parent'       => $conv_parent,
1531                                 'parent_uri'   => $parent_uri
1532                         ));
1533
1534                         // only send one notification
1535                         break;
1536                 }
1537         }
1538         return;
1539 }
1540
1541
1542
1543
1544 function diaspora_conversation($importer,$xml,$msg) {
1545
1546         $a = get_app();
1547
1548         $guid = notags(unxmlify($xml->guid));
1549         $subject = notags(unxmlify($xml->subject));
1550         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1551         $participant_handles = notags(unxmlify($xml->participant_handles));
1552         $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1553
1554         $parent_uri = $diaspora_handle . ':' . $guid;
1555
1556         $messages = $xml->message;
1557
1558         if(! count($messages)) {
1559                 logger('diaspora_conversation: empty conversation');
1560                 return;
1561         }
1562
1563         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1564         if(! $contact) {
1565                 logger('diaspora_conversation: cannot find contact: ' . $msg['author']);
1566                 return;
1567         }
1568
1569         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1570                 logger('diaspora_conversation: Ignoring this author.');
1571                 return 202;
1572         }
1573
1574         $conversation = null;
1575
1576         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1577                 intval($importer['uid']),
1578                 dbesc($guid)
1579         );
1580         if(count($c))
1581                 $conversation = $c[0];
1582         else {
1583                 $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ",
1584                         intval($importer['uid']),
1585                         dbesc($guid),
1586                         dbesc($diaspora_handle),
1587                         dbesc(datetime_convert('UTC','UTC',$created_at)),
1588                         dbesc(datetime_convert()),
1589                         dbesc($subject),
1590                         dbesc($participant_handles)
1591                 );
1592                 if($r)
1593                         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1594                 intval($importer['uid']),
1595             dbesc($guid)
1596         );
1597             if(count($c))
1598             $conversation = $c[0];
1599         }
1600         if(! $conversation) {
1601                 logger('diaspora_conversation: unable to create conversation.');
1602                 return;
1603         }
1604
1605         foreach($messages as $mesg) {
1606
1607                 $reply = 0;
1608
1609                 $msg_guid = notags(unxmlify($mesg->guid));
1610                 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1611                 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1612                 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1613                 $msg_text = unxmlify($mesg->text);
1614                 $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at)));
1615                 $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle));
1616                 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1617                 if($msg_conversation_guid != $guid) {
1618                         logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml);
1619                         continue;
1620                 }
1621
1622                 $body = diaspora2bb($msg_text);
1623                 $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1624
1625                 $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1626
1627                 $author_signature = base64_decode($msg_author_signature);
1628
1629                 if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) {
1630                         $person = $contact;
1631                         $key = $msg['key'];
1632                 }
1633                 else {
1634                         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1635
1636                         if(is_array($person) && x($person,'pubkey'))
1637                                 $key = $person['pubkey'];
1638                         else {
1639                                 logger('diaspora_conversation: unable to find author details');
1640                                 continue;
1641                         }
1642                 }
1643
1644                 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1645                         logger('diaspora_conversation: verification failed.');
1646                         continue;
1647                 }
1648
1649                 if($msg_parent_author_signature) {
1650                         $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1651
1652                         $parent_author_signature = base64_decode($msg_parent_author_signature);
1653
1654                         $key = $msg['key'];
1655
1656                         if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) {
1657                                 logger('diaspora_conversation: owner verification failed.');
1658                                 continue;
1659                         }
1660                 }
1661
1662                 $r = q("select id from mail where `uri` = '%s' limit 1",
1663                         dbesc($message_id)
1664                 );
1665                 if(count($r)) {
1666                         logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG);
1667                         continue;
1668                 }
1669
1670                 q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1671                         intval($importer['uid']),
1672                         dbesc($msg_guid),
1673                         intval($conversation['id']),
1674                         dbesc($person['name']),
1675                         dbesc($person['photo']),
1676                         dbesc($person['url']),
1677                         intval($contact['id']),
1678                         dbesc($subject),
1679                         dbesc($body),
1680                         0,
1681                         0,
1682                         dbesc($message_id),
1683                         dbesc($parent_uri),
1684                         dbesc($msg_created_at)
1685                 );
1686
1687                 q("update conv set updated = '%s' where id = %d",
1688                         dbesc(datetime_convert()),
1689                         intval($conversation['id'])
1690                 );
1691
1692                 require_once('include/enotify.php');
1693                 notification(array(
1694                         'type' => NOTIFY_MAIL,
1695                         'notify_flags' => $importer['notify-flags'],
1696                         'language' => $importer['language'],
1697                         'to_name' => $importer['username'],
1698                         'to_email' => $importer['email'],
1699                         'uid' =>$importer['importer_uid'],
1700                         'item' => array('subject' => $subject, 'body' => $body),
1701                         'source_name' => $person['name'],
1702                         'source_link' => $person['url'],
1703                         'source_photo' => $person['thumb'],
1704                         'verb' => ACTIVITY_POST,
1705                         'otype' => 'mail'
1706                 ));
1707         }
1708
1709         return;
1710 }
1711
1712 function diaspora_message($importer,$xml,$msg) {
1713
1714         $a = get_app();
1715
1716         $msg_guid = notags(unxmlify($xml->guid));
1717         $msg_parent_guid = notags(unxmlify($xml->parent_guid));
1718         $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature));
1719         $msg_author_signature = notags(unxmlify($xml->author_signature));
1720         $msg_text = unxmlify($xml->text);
1721         $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at)));
1722         $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1723         $msg_conversation_guid = notags(unxmlify($xml->conversation_guid));
1724
1725         $parent_uri = $diaspora_handle . ':' . $msg_parent_guid;
1726
1727         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle);
1728         if(! $contact) {
1729                 logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle);
1730                 return;
1731         }
1732
1733         if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
1734                 logger('diaspora_message: Ignoring this author.');
1735                 return 202;
1736         }
1737
1738         $conversation = null;
1739
1740         $c = q("select * from conv where uid = %d and guid = '%s' limit 1",
1741                 intval($importer['uid']),
1742                 dbesc($msg_conversation_guid)
1743         );
1744         if(count($c))
1745                 $conversation = $c[0];
1746         else {
1747                 logger('diaspora_message: conversation not available.');
1748                 return;
1749         }
1750
1751         $reply = 0;
1752
1753         $body = diaspora2bb($msg_text);
1754         $message_id = $msg_diaspora_handle . ':' . $msg_guid;
1755
1756         $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid;
1757
1758
1759         $author_signature = base64_decode($msg_author_signature);
1760
1761         $person = find_diaspora_person_by_handle($msg_diaspora_handle);
1762         if(is_array($person) && x($person,'pubkey'))
1763                 $key = $person['pubkey'];
1764         else {
1765                 logger('diaspora_message: unable to find author details');
1766                 return;
1767         }
1768
1769         if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) {
1770                 logger('diaspora_message: verification failed.');
1771                 return;
1772         }
1773
1774         $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1",
1775                 dbesc($message_id),
1776                 intval($importer['uid'])
1777         );
1778         if(count($r)) {
1779                 logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG);
1780                 return;
1781         }
1782
1783         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')",
1784                 intval($importer['uid']),
1785                 dbesc($msg_guid),
1786                 intval($conversation['id']),
1787                 dbesc($person['name']),
1788                 dbesc($person['photo']),
1789                 dbesc($person['url']),
1790                 intval($contact['id']),
1791                 dbesc($conversation['subject']),
1792                 dbesc($body),
1793                 0,
1794                 1,
1795                 dbesc($message_id),
1796                 dbesc($parent_uri),
1797                 dbesc($msg_created_at)
1798         );
1799
1800         q("update conv set updated = '%s' where id = %d",
1801                 dbesc(datetime_convert()),
1802                 intval($conversation['id'])
1803         );
1804
1805         return;
1806 }
1807
1808
1809 function diaspora_photo($importer,$xml,$msg,$attempt=1) {
1810
1811         $a = get_app();
1812
1813         logger('diaspora_photo: init',LOGGER_DEBUG);
1814
1815         $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
1816
1817         $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
1818
1819         $status_message_guid = notags(unxmlify($xml->status_message_guid));
1820
1821         $guid = notags(unxmlify($xml->guid));
1822
1823         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1824
1825         $public = notags(unxmlify($xml->public));
1826
1827         $created_at = notags(unxmlify($xml_created_at));
1828
1829         logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG);
1830
1831         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1832         if(! $contact) {
1833                 logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle);
1834                 return;
1835         }
1836
1837         if(! diaspora_post_allow($importer,$contact)) {
1838                 logger('diaspora_photo: Ignoring this author.');
1839                 return 202;
1840         }
1841
1842         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1843                 intval($importer['uid']),
1844                 dbesc($status_message_guid)
1845         );
1846         if(! count($r)) {
1847                 if($attempt <= 3) {
1848                         q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)",
1849                            intval($importer['uid']),
1850                            dbesc(serialize($msg)),
1851                            intval($attempt + 1)
1852                         );
1853                 }
1854                 logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid);
1855                 return;
1856         }
1857
1858         $parent_item = $r[0];
1859
1860         $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
1861
1862         $link_text = scale_external_images($link_text, true,
1863                                            array($remote_photo_name, 'scaled_full_' . $remote_photo_name));
1864
1865         if(strpos($parent_item['body'],$link_text) === false) {
1866                 $r = q("UPDATE `item` SET `body` = '%s', `visible` = 1 WHERE `id` = %d AND `uid` = %d",
1867                         dbesc($link_text . $parent_item['body']),
1868                         intval($parent_item['id']),
1869                         intval($parent_item['uid'])
1870                 );
1871                 update_thread($parent_item['id']);
1872         }
1873
1874         return;
1875 }
1876
1877
1878
1879
1880 function diaspora_like($importer,$xml,$msg) {
1881
1882         $a = get_app();
1883         $guid = notags(unxmlify($xml->guid));
1884         $parent_guid = notags(unxmlify($xml->parent_guid));
1885         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
1886         $target_type = notags(unxmlify($xml->target_type));
1887         $positive = notags(unxmlify($xml->positive));
1888         $author_signature = notags(unxmlify($xml->author_signature));
1889
1890         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
1891
1892         // likes on comments not supported here and likes on photos not supported by Diaspora
1893
1894 //      if($target_type !== 'Post')
1895 //              return;
1896
1897         $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
1898         if(! $contact) {
1899                 logger('diaspora_like: cannot find contact: ' . $msg['author']);
1900                 return;
1901         }
1902
1903         if(! diaspora_post_allow($importer,$contact)) {
1904                 logger('diaspora_like: Ignoring this author.');
1905                 return 202;
1906         }
1907
1908         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1909                 intval($importer['uid']),
1910                 dbesc($parent_guid)
1911         );
1912         if(! count($r)) {
1913                 logger('diaspora_like: parent item not found: ' . $guid);
1914                 return;
1915         }
1916
1917         $parent_item = $r[0];
1918
1919         $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1920                 intval($importer['uid']),
1921                 dbesc($guid)
1922         );
1923         if(count($r)) {
1924                 if($positive === 'true') {
1925                         logger('diaspora_like: duplicate like: ' . $guid);
1926                         return;
1927                 }
1928                 // Note: I don't think "Like" objects with positive = "false" are ever actually used
1929                 // It looks like "RelayableRetractions" are used for "unlike" instead
1930                 if($positive === 'false') {
1931                         logger('diaspora_like: received a like with positive set to "false"...ignoring');
1932 /*                      q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d",
1933                                 intval($r[0]['id']),
1934                                 intval($importer['uid'])
1935                         );*/
1936                         // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes
1937                         //  send notification via proc_run()
1938                         return;
1939                 }
1940         }
1941         // Note: I don't think "Like" objects with positive = "false" are ever actually used
1942         // It looks like "RelayableRetractions" are used for "unlike" instead
1943         if($positive === 'false') {
1944                 logger('diaspora_like: received a like with positive set to "false"');
1945                 logger('diaspora_like: unlike received with no corresponding like...ignoring');
1946                 return;
1947         }
1948
1949
1950         /* How Diaspora performs "like" signature checking:
1951
1952            - If an item has been sent by the like author to the top-level post owner to relay on
1953              to the rest of the contacts on the top-level post, the top-level post owner should check
1954              the author_signature, then create a parent_author_signature before relaying the like on
1955            - If an item has been relayed on by the top-level post owner, the contacts who receive it
1956              check only the parent_author_signature. Basically, they trust that the top-level post
1957              owner has already verified the authenticity of anything he/she sends out
1958            - In either case, the signature that get checked is the signature created by the person
1959              who sent the salmon
1960         */
1961
1962         // Diaspora has changed the way they are signing the likes.
1963         // Just to make sure that we don't miss any likes we will check the old and the current way.
1964         $old_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
1965
1966         $signed_data = $positive . ';' . $guid . ';' . $target_type . ';' . $parent_guid . ';' . $diaspora_handle;
1967
1968         $key = $msg['key'];
1969
1970         if ($parent_author_signature) {
1971                 // If a parent_author_signature exists, then we've received the like
1972                 // relayed from the top-level post owner. There's no need to check the
1973                 // author_signature if the parent_author_signature is valid
1974
1975                 $parent_author_signature = base64_decode($parent_author_signature);
1976
1977                 if (!rsa_verify($signed_data,$parent_author_signature,$key,'sha256') AND
1978                         !rsa_verify($old_signed_data,$parent_author_signature,$key,'sha256')) {
1979
1980                         logger('diaspora_like: top-level owner verification failed.');
1981                         return;
1982                 }
1983         } else {
1984                 // If there's no parent_author_signature, then we've received the like
1985                 // from the like creator. In that case, the person is "like"ing
1986                 // our post, so he/she must be a contact of ours and his/her public key
1987                 // should be in $msg['key']
1988
1989                 $author_signature = base64_decode($author_signature);
1990
1991                 if (!rsa_verify($signed_data,$author_signature,$key,'sha256') AND
1992                         !rsa_verify($old_signed_data,$author_signature,$key,'sha256')) {
1993
1994                         logger('diaspora_like: like creator verification failed.');
1995                         return;
1996                 }
1997         }
1998
1999         // Phew! Everything checks out. Now create an item.
2000
2001         // Find the original comment author information.
2002         // We need this to make sure we display the comment author
2003         // information (name and avatar) correctly.
2004         if(strcasecmp($diaspora_handle,$msg['author']) == 0)
2005                 $person = $contact;
2006         else {
2007                 $person = find_diaspora_person_by_handle($diaspora_handle);
2008
2009                 if(! is_array($person)) {
2010                         logger('diaspora_like: unable to find author details');
2011                         return;
2012                 }
2013         }
2014
2015         $uri = $diaspora_handle . ':' . $guid;
2016
2017         $activity = ACTIVITY_LIKE;
2018         $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
2019         $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
2020         $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
2021         $body = $parent_item['body'];
2022
2023         $obj = <<< EOT
2024
2025         <object>
2026                 <type>$objtype</type>
2027                 <local>1</local>
2028                 <id>{$parent_item['uri']}</id>
2029                 <link>$link</link>
2030                 <title></title>
2031                 <content>$body</content>
2032         </object>
2033 EOT;
2034         $bodyverb = t('%1$s likes %2$s\'s %3$s');
2035
2036         $arr = array();
2037
2038         $arr['uri'] = $uri;
2039         $arr['uid'] = $importer['uid'];
2040         $arr['guid'] = $guid;
2041         $arr['network']  = NETWORK_DIASPORA;
2042         $arr['contact-id'] = $contact['id'];
2043         $arr['type'] = 'activity';
2044         $arr['wall'] = $parent_item['wall'];
2045         $arr['gravity'] = GRAVITY_LIKE;
2046         $arr['parent'] = $parent_item['id'];
2047         $arr['parent-uri'] = $parent_item['uri'];
2048
2049         $arr['owner-name'] = $parent_item['name'];
2050         $arr['owner-link'] = $parent_item['url'];
2051         //$arr['owner-avatar'] = $parent_item['thumb'];
2052         $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']);
2053
2054         $arr['author-name'] = $person['name'];
2055         $arr['author-link'] = $person['url'];
2056         $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
2057
2058         $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
2059         $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
2060         //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
2061         $plink = '[url='.$a->get_baseurl().'/display/'.urlencode($guid).']'.$post_type.'[/url]';
2062         $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
2063
2064         $arr['app']  = 'Diaspora';
2065
2066         $arr['private'] = $parent_item['private'];
2067         $arr['verb'] = $activity;
2068         $arr['object-type'] = $objtype;
2069         $arr['object'] = $obj;
2070         $arr['visible'] = 1;
2071         $arr['unseen'] = 1;
2072         $arr['last-child'] = 0;
2073
2074         $message_id = item_store($arr);
2075
2076
2077         //if($message_id) {
2078         //      q("update item set plink = '%s' where id = %d",
2079         //              //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id),
2080         //              dbesc($a->get_baseurl().'/display/'.$guid),
2081         //              intval($message_id)
2082         //      );
2083         //}
2084
2085         if(! $parent_author_signature) {
2086                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2087                         intval($message_id),
2088                         dbesc($signed_data),
2089                         dbesc(base64_encode($author_signature)),
2090                         dbesc($diaspora_handle)
2091                 );
2092         }
2093
2094         // if the message isn't already being relayed, notify others
2095         // the existence of parent_author_signature means the parent_author or owner
2096         // is already relaying. The parent_item['origin'] indicates the message was created on our system
2097
2098         if(($parent_item['origin']) && (! $parent_author_signature))
2099                 proc_run('php','include/notifier.php','comment-import',$message_id);
2100
2101         return;
2102 }
2103
2104 function diaspora_retraction($importer,$xml) {
2105
2106
2107         $guid = notags(unxmlify($xml->guid));
2108         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2109         $type = notags(unxmlify($xml->type));
2110
2111         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2112         if(! $contact)
2113                 return;
2114
2115         if($type === 'Person') {
2116                 require_once('include/Contact.php');
2117                 contact_remove($contact['id']);
2118         }
2119         elseif($type === 'Post') {
2120                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2121                         dbesc('guid'),
2122                         intval($importer['uid'])
2123                 );
2124                 if(count($r)) {
2125                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2126                                 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d",
2127                                         dbesc(datetime_convert()),
2128                                         intval($r[0]['id'])
2129                                 );
2130                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2131                         }
2132                 }
2133         }
2134
2135         return 202;
2136         // NOTREACHED
2137 }
2138
2139 function diaspora_signed_retraction($importer,$xml,$msg) {
2140
2141
2142         $guid = notags(unxmlify($xml->target_guid));
2143         $diaspora_handle = notags(unxmlify($xml->sender_handle));
2144         $type = notags(unxmlify($xml->target_type));
2145         $sig = notags(unxmlify($xml->target_author_signature));
2146
2147         $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
2148
2149         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2150         if(! $contact) {
2151                 logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']);
2152                 return;
2153         }
2154
2155
2156         $signed_data = $guid . ';' . $type ;
2157         $key = $msg['key'];
2158
2159         /* How Diaspora performs relayable_retraction signature checking:
2160
2161            - If an item has been sent by the item author to the top-level post owner to relay on
2162              to the rest of the contacts on the top-level post, the top-level post owner checks
2163              the author_signature, then creates a parent_author_signature before relaying the item on
2164            - If an item has been relayed on by the top-level post owner, the contacts who receive it
2165              check only the parent_author_signature. Basically, they trust that the top-level post
2166              owner has already verified the authenticity of anything he/she sends out
2167            - In either case, the signature that get checked is the signature created by the person
2168              who sent the salmon
2169         */
2170
2171         if($parent_author_signature) {
2172
2173                 $parent_author_signature = base64_decode($parent_author_signature);
2174
2175                 if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) {
2176                         logger('diaspora_signed_retraction: top-level post owner verification failed');
2177                         return;
2178                 }
2179
2180         }
2181         else {
2182
2183                 $sig_decode = base64_decode($sig);
2184
2185                 if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) {
2186                         logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true));
2187                         return;
2188                 }
2189         }
2190
2191         if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') {
2192                 $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1",
2193                         dbesc($guid),
2194                         intval($importer['uid'])
2195                 );
2196                 if(count($r)) {
2197                         if(link_compare($r[0]['author-link'],$contact['url'])) {
2198                                 q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d",
2199                                         dbesc(datetime_convert()),
2200                                         dbesc(datetime_convert()),
2201                                         intval($r[0]['id'])
2202                                 );
2203                                 delete_thread($r[0]['id'], $r[0]['parent-uri']);
2204
2205                                 // Now check if the retraction needs to be relayed by us
2206                                 //
2207                                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2208                                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2209                                 // The only item with `parent` and `id` as the parent id is the parent item.
2210                                 $p = q("select origin from item where parent = %d and id = %d limit 1",
2211                                         $r[0]['parent'],
2212                                         $r[0]['parent']
2213                                 );
2214                                 if(count($p)) {
2215                                         if(($p[0]['origin']) && (! $parent_author_signature)) {
2216                                                 q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
2217                                                         $r[0]['id'],
2218                                                         dbesc($signed_data),
2219                                                         dbesc($sig),
2220                                                         dbesc($diaspora_handle)
2221                                                 );
2222
2223                                                 // the existence of parent_author_signature would have meant the parent_author or owner
2224                                                 // is already relaying.
2225                                                 logger('diaspora_signed_retraction: relaying relayable_retraction');
2226
2227                                                 proc_run('php','include/notifier.php','drop',$r[0]['id']);
2228                                         }
2229                                 }
2230                         }
2231                 }
2232         }
2233         else
2234                 logger('diaspora_signed_retraction: unknown type: ' . $type);
2235
2236         return 202;
2237         // NOTREACHED
2238 }
2239
2240 function diaspora_profile($importer,$xml,$msg) {
2241
2242         $a = get_app();
2243         $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
2244
2245
2246         if($diaspora_handle != $msg['author']) {
2247                 logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.');
2248                 return 202;
2249         }
2250
2251         $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
2252         if(! $contact)
2253                 return;
2254
2255         if($contact['blocked']) {
2256                 logger('diaspora_post: Ignoring this author.');
2257                 return 202;
2258         }
2259
2260         $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : '');
2261         $image_url = unxmlify($xml->image_url);
2262         $birthday = unxmlify($xml->birthday);
2263         $location = diaspora2bb(unxmlify($xml->location));
2264         $about = diaspora2bb(unxmlify($xml->bio));
2265         $gender = unxmlify($xml->gender);
2266         $tags = unxmlify($xml->tag_string);
2267
2268         $tags = explode("#", $tags);
2269
2270         $keywords = array();
2271         foreach ($tags as $tag) {
2272                 $tag = trim(strtolower($tag));
2273                 if ($tag != "")
2274                         $keywords[] = $tag;
2275         }
2276
2277         $keywords = implode(", ", $keywords);
2278
2279         $handle_parts = explode("@", $diaspora_handle);
2280         if($name === '') {
2281                 $name = $handle_parts[0];
2282         }
2283
2284         if( preg_match("|^https?://|", $image_url) === 0) {
2285                 $image_url = "http://" . $handle_parts[1] . $image_url;
2286         }
2287
2288 /*      $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE  `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ",
2289                 intval($importer['uid']),
2290                 intval($contact['id'])
2291         );
2292         $oldphotos = ((count($r)) ? $r : null);*/
2293
2294         require_once('include/Photo.php');
2295
2296         $images = import_profile_photo($image_url,$importer['uid'],$contact['id']);
2297
2298         // Generic birthday. We don't know the timezone. The year is irrelevant.
2299
2300         $birthday = str_replace('1000','1901',$birthday);
2301
2302         $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d');
2303
2304         // this is to prevent multiple birthday notifications in a single year
2305         // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2306
2307         if(substr($birthday,5) === substr($contact['bd'],5))
2308                 $birthday = $contact['bd'];
2309
2310         // TODO: update name on item['author-name'] if the name changed. See consume_feed()
2311         // Not doing this currently because D* protocol is scheduled for revision soon.
2312
2313         $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2314                 dbesc($name),
2315                 dbesc(datetime_convert()),
2316                 dbesc($images[0]),
2317                 dbesc($images[1]),
2318                 dbesc($images[2]),
2319                 dbesc(datetime_convert()),
2320                 dbesc($birthday),
2321                 dbesc($location),
2322                 dbesc($about),
2323                 dbesc($keywords),
2324                 dbesc($gender),
2325                 intval($contact['id']),
2326                 intval($importer['uid'])
2327         );
2328
2329         if (unxmlify($xml->searchable) == "true") {
2330                 require_once('include/socgraph.php');
2331                 poco_check($contact['url'], $name, NETWORK_DIASPORA, $images[0], $about, $location, $gender, $keywords, "",
2332                         datetime_convert(), 2, $contact['id'], $importer['uid']);
2333         }
2334
2335         $profileurl = "";
2336         $author = q("SELECT * FROM `unique_contacts` WHERE `url`='%s' LIMIT 1",
2337                         dbesc(normalise_link($contact['url'])));
2338
2339         if (count($author) == 0) {
2340                 q("INSERT INTO `unique_contacts` (`url`, `name`, `avatar`, `location`, `about`) VALUES ('%s', '%s', '%s', '%s', '%s')",
2341                         dbesc(normalise_link($contact['url'])), dbesc($name), dbesc($location), dbesc($about), dbesc($images[0]));
2342
2343                 $author = q("SELECT id FROM unique_contacts WHERE url='%s' LIMIT 1",
2344                         dbesc(normalise_link($contact['url'])));
2345         } else if (normalise_link($contact['url']).$name.$location.$about != normalise_link($author[0]["url"]).$author[0]["name"].$author[0]["location"].$author[0]["about"]) {
2346                 q("UPDATE unique_contacts SET name = '%s', avatar = '%s', `location` = '%s', `about` = '%s' WHERE url = '%s'",
2347                 dbesc($name), dbesc($images[0]), dbesc($location), dbesc($about), dbesc(normalise_link($contact['url'])));
2348         }
2349
2350 /*      if($r) {
2351                 if($oldphotos) {
2352                         foreach($oldphotos as $ph) {
2353                                 q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ",
2354                                         intval($importer['uid']),
2355                                         intval($contact['id']),
2356                                         dbesc($ph['resource-id'])
2357                                 );
2358                         }
2359                 }
2360         }       */
2361
2362         return;
2363
2364 }
2365
2366 function diaspora_share($me,$contact) {
2367         $a = get_app();
2368         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2369         $theiraddr = $contact['addr'];
2370
2371         $tpl = get_markup_template('diaspora_share.tpl');
2372         $msg = replace_macros($tpl, array(
2373                 '$sender' => $myaddr,
2374                 '$recipient' => $theiraddr
2375         ));
2376
2377         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2378         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2379
2380         return(diaspora_transmit($owner,$contact,$slap, false));
2381 }
2382
2383 function diaspora_unshare($me,$contact) {
2384
2385         $a = get_app();
2386         $myaddr = $me['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2387
2388         $tpl = get_markup_template('diaspora_retract.tpl');
2389         $msg = replace_macros($tpl, array(
2390                 '$guid'   => $me['guid'],
2391                 '$type'   => 'Person',
2392                 '$handle' => $myaddr
2393         ));
2394
2395         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
2396         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']));
2397
2398         return(diaspora_transmit($owner,$contact,$slap, false));
2399
2400 }
2401
2402
2403 function diaspora_send_status($item,$owner,$contact,$public_batch = false) {
2404
2405         $a = get_app();
2406         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2407         $theiraddr = $contact['addr'];
2408
2409         $images = array();
2410
2411         $title = $item['title'];
2412         $body = $item['body'];
2413
2414 /*
2415         // We're trying to match Diaspora's split message/photo protocol but
2416         // all the photos are displayed on D* as links and not img's - even
2417         // though we're sending pretty much precisely what they send us when
2418         // doing the same operation.
2419         // Commented out for now, we'll use bb2diaspora to convert photos to markdown
2420         // which seems to get through intact.
2421
2422         $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
2423         if($cnt) {
2424                 foreach($matches as $mtch) {
2425                         $detail = array();
2426                         $detail['str'] = $mtch[0];
2427                         $detail['path'] = dirname($mtch[1]) . '/';
2428                         $detail['file'] = basename($mtch[1]);
2429                         $detail['guid'] = $item['guid'];
2430                         $detail['handle'] = $myaddr;
2431                         $images[] = $detail;
2432                         $body = str_replace($detail['str'],$mtch[1],$body);
2433                 }
2434         }
2435 */
2436
2437         //if(strlen($title))
2438         //      $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body;
2439
2440         // convert to markdown
2441         $body = xmlify(html_entity_decode(bb2diaspora($body)));
2442         //$body = bb2diaspora($body);
2443
2444         // Adding the title
2445         if(strlen($title))
2446                 $body = "## ".html_entity_decode($title)."\n\n".$body;
2447
2448         if($item['attach']) {
2449                 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER);
2450                 if(cnt) {
2451                         $body .= "\n" . t('Attachments:') . "\n";
2452                         foreach($matches as $mtch) {
2453                                 $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
2454                         }
2455                 }
2456         }
2457
2458
2459         $public = (($item['private']) ? 'false' : 'true');
2460
2461         require_once('include/datetime.php');
2462         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2463
2464         // Detect a share element and do a reshare
2465         // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb
2466         if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) {
2467                 $tpl = get_markup_template('diaspora_reshare.tpl');
2468                 $msg = replace_macros($tpl, array(
2469                         '$root_handle' => xmlify($ret['root_handle']),
2470                         '$root_guid' => $ret['root_guid'],
2471                         '$guid' => $item['guid'],
2472                         '$handle' => xmlify($myaddr),
2473                         '$public' => $public,
2474                         '$created' => $created,
2475                         '$provider' => $item["app"]
2476                 ));
2477         } else {
2478                 $tpl = get_markup_template('diaspora_post.tpl');
2479                 $msg = replace_macros($tpl, array(
2480                         '$body' => $body,
2481                         '$guid' => $item['guid'],
2482                         '$handle' => xmlify($myaddr),
2483                         '$public' => $public,
2484                         '$created' => $created,
2485                         '$provider' => $item["app"]
2486                 ));
2487         }
2488
2489         logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA);
2490
2491         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2492         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2493
2494         $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch);
2495
2496         logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG);
2497
2498         if(count($images)) {
2499                 diaspora_send_images($item,$owner,$contact,$images,$public_batch);
2500         }
2501
2502         return $return_code;
2503 }
2504
2505 function diaspora_is_reshare($body) {
2506         $body = trim($body);
2507
2508         // Skip if it isn't a pure repeated messages
2509         // Does it start with a share?
2510         if (strpos($body, "[share") > 0)
2511                 return(false);
2512
2513         // Does it end with a share?
2514         if (strlen($body) > (strrpos($body, "[/share]") + 8))
2515                 return(false);
2516
2517         $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2518         // Skip if there is no shared message in there
2519         if ($body == $attributes)
2520                 return(false);
2521
2522         $guid = "";
2523         preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2524         if ($matches[1] != "")
2525                 $guid = $matches[1];
2526
2527         preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2528         if ($matches[1] != "")
2529                 $guid = $matches[1];
2530
2531         if ($guid != "") {
2532                 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2533                         dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2534                 if ($r) {
2535                         $ret= array();
2536                         $ret["root_handle"] = diaspora_handle_from_contact($r[0]["contact-id"]);
2537                         $ret["root_guid"] = $guid;
2538                         return($ret);
2539                 }
2540         }
2541
2542         $profile = "";
2543         preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2544         if ($matches[1] != "")
2545                 $profile = $matches[1];
2546
2547         preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2548         if ($matches[1] != "")
2549                 $profile = $matches[1];
2550
2551         $ret= array();
2552
2553         $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2554         if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2555                 return(false);
2556
2557         $link = "";
2558         preg_match("/link='(.*?)'/ism", $attributes, $matches);
2559         if ($matches[1] != "")
2560                 $link = $matches[1];
2561
2562         preg_match('/link="(.*?)"/ism', $attributes, $matches);
2563         if ($matches[1] != "")
2564                 $link = $matches[1];
2565
2566         $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2567         if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
2568                 return(false);
2569
2570         return($ret);
2571 }
2572
2573 function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) {
2574         $a = get_app();
2575         if(! count($images))
2576                 return;
2577         $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
2578
2579         $tpl = get_markup_template('diaspora_photo.tpl');
2580         foreach($images as $image) {
2581                 if(! stristr($image['path'],$mysite))
2582                         continue;
2583                 $resource = str_replace('.jpg','',$image['file']);
2584                 $resource = substr($resource,0,strpos($resource,'-'));
2585
2586                 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
2587                         dbesc($resource),
2588                         intval($owner['uid'])
2589                 );
2590                 if(! count($r))
2591                         continue;
2592                 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
2593                 $msg = replace_macros($tpl,array(
2594                         '$path' => xmlify($image['path']),
2595                         '$filename' => xmlify($image['file']),
2596                         '$msg_guid' => xmlify($image['guid']),
2597                         '$guid' => xmlify($r[0]['guid']),
2598                         '$handle' => xmlify($image['handle']),
2599                         '$public' => xmlify($public),
2600                         '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C'))
2601                 ));
2602
2603
2604                 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
2605                 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2606                 //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2607
2608                 diaspora_transmit($owner,$contact,$slap,$public_batch);
2609         }
2610
2611 }
2612
2613 function diaspora_send_followup($item,$owner,$contact,$public_batch = false) {
2614
2615         $a = get_app();
2616         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2617 //      $theiraddr = $contact['addr'];
2618
2619         // Diaspora doesn't support threaded comments, but some
2620         // versions of Diaspora (i.e. Diaspora-pistos) support
2621         // likes on comments
2622         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2623                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2624                         dbesc($item['thr-parent'])
2625                       );
2626         }
2627         else {
2628                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2629                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2630                 // The only item with `parent` and `id` as the parent id is the parent item.
2631                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2632                         intval($item['parent']),
2633                         intval($item['parent'])
2634                 );
2635         }
2636         if(count($p))
2637                 $parent = $p[0];
2638         else
2639                 return;
2640
2641         if($item['verb'] === ACTIVITY_LIKE) {
2642                 $tpl = get_markup_template('diaspora_like.tpl');
2643                 $like = true;
2644                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2645 //              $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post');
2646 //              $positive = (($item['deleted']) ? 'false' : 'true');
2647                 $positive = 'true';
2648
2649                 if(($item['deleted']))
2650                         logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction');
2651         }
2652         else {
2653                 $tpl = get_markup_template('diaspora_comment.tpl');
2654                 $like = false;
2655         }
2656
2657         $text = html_entity_decode(bb2diaspora($item['body']));
2658
2659         // sign it
2660
2661         if($like)
2662                 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr;
2663         else
2664                 $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr;
2665
2666         $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2667
2668         $msg = replace_macros($tpl,array(
2669                 '$guid' => xmlify($item['guid']),
2670                 '$parent_guid' => xmlify($parent['guid']),
2671                 '$target_type' =>xmlify($target_type),
2672                 '$authorsig' => xmlify($authorsig),
2673                 '$body' => xmlify($text),
2674                 '$positive' => xmlify($positive),
2675                 '$handle' => xmlify($myaddr)
2676         ));
2677
2678         logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
2679
2680         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2681         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2682
2683         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2684 }
2685
2686
2687 function diaspora_send_relay($item,$owner,$contact,$public_batch = false) {
2688
2689
2690         $a = get_app();
2691         $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2692 //      $theiraddr = $contact['addr'];
2693
2694         $body = $item['body'];
2695         $text = html_entity_decode(bb2diaspora($body));
2696
2697         // Diaspora doesn't support threaded comments, but some
2698         // versions of Diaspora (i.e. Diaspora-pistos) support
2699         // likes on comments
2700         if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) {
2701                 $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1",
2702                         dbesc($item['thr-parent'])
2703                       );
2704         }
2705         else {
2706                 // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always
2707                 // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent.
2708                 // The only item with `parent` and `id` as the parent id is the parent item.
2709                 $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1",
2710                        intval($item['parent']),
2711                        intval($item['parent'])
2712                       );
2713         }
2714         if(count($p))
2715                 $parent = $p[0];
2716         else
2717                 return;
2718
2719         $like = false;
2720         $relay_retract = false;
2721         $sql_sign_id = 'iid';
2722         if( $item['deleted']) {
2723                 $relay_retract = true;
2724
2725                 $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2726
2727                 $sql_sign_id = 'retract_iid';
2728                 $tpl = get_markup_template('diaspora_relayable_retraction.tpl');
2729         }
2730         elseif($item['verb'] === ACTIVITY_LIKE) {
2731                 $like = true;
2732
2733                 $target_type = ( $parent['uri'] === $parent['parent-uri']  ? 'Post' : 'Comment');
2734 //              $positive = (($item['deleted']) ? 'false' : 'true');
2735                 $positive = 'true';
2736
2737                 $tpl = get_markup_template('diaspora_like_relay.tpl');
2738         }
2739         else { // item is a comment
2740                 $tpl = get_markup_template('diaspora_comment_relay.tpl');
2741         }
2742
2743
2744         // fetch the original signature if the relayable was created by a Diaspora
2745         // or DFRN user. Relayables for other networks are not supported.
2746
2747 /*      $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1",
2748                 intval($item['id'])
2749         );
2750         if(count($r)) {
2751                 $orig_sign = $r[0];
2752                 $signed_text = $orig_sign['signed_text'];
2753                 $authorsig = $orig_sign['signature'];
2754                 $handle = $orig_sign['signer'];
2755         }
2756         else {
2757
2758                 // Author signature information (for likes, comments, and retractions of likes or comments,
2759                 // whether from Diaspora or Friendica) must be placed in the `sign` table before this
2760                 // function is called
2761                 logger('diaspora_send_relay: original author signature not found, cannot send relayable');
2762                 return;
2763         }*/
2764
2765         /* Since the author signature is only checked by the parent, not by the relay recipients,
2766          * I think it may not be necessary for us to do so much work to preserve all the original
2767          * signatures. The important thing that Diaspora DOES need is the original creator's handle.
2768          * Let's just generate that and forget about all the original author signature stuff.
2769          *
2770          * Note: this might be more of an problem if we want to support likes on comments for older
2771          * versions of Diaspora (diaspora-pistos), but since there are a number of problems with
2772          * doing that, let's ignore it for now.
2773          *
2774          * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't
2775          * been done yet
2776          */
2777
2778         $handle = diaspora_handle_from_contact($item['contact-id']);
2779         if(! $handle)
2780                 return;
2781
2782
2783         if($relay_retract)
2784                 $sender_signed_text = $item['guid'] . ';' . $target_type;
2785         elseif($like)
2786                 $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle;
2787         else
2788                 $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle;
2789
2790         // Sign the relayable with the top-level owner's signature
2791         //
2792         // We'll use the $sender_signed_text that we just created, instead of the $signed_text
2793         // stored in the database, because that provides the best chance that Diaspora will
2794         // be able to reconstruct the signed text the same way we did. This is particularly a
2795         // concern for the comment, whose signed text includes the text of the comment. The
2796         // smallest change in the text of the comment, including removing whitespace, will
2797         // make the signature verification fail. Since we translate from BB code to Diaspora's
2798         // markup at the top of this function, which is AFTER we placed the original $signed_text
2799         // in the database, it's hazardous to trust the original $signed_text.
2800
2801         $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256'));
2802
2803         $msg = replace_macros($tpl,array(
2804                 '$guid' => xmlify($item['guid']),
2805                 '$parent_guid' => xmlify($parent['guid']),
2806                 '$target_type' =>xmlify($target_type),
2807                 '$authorsig' => xmlify($authorsig),
2808                 '$parentsig' => xmlify($parentauthorsig),
2809                 '$body' => xmlify($text),
2810                 '$positive' => xmlify($positive),
2811                 '$handle' => xmlify($handle)
2812         ));
2813
2814         logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA);
2815
2816
2817         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2818         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2819
2820         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2821
2822 }
2823
2824
2825
2826 function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) {
2827
2828         $a = get_app();
2829         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2830
2831         // Check whether the retraction is for a top-level post or whether it's a relayable
2832         if( $item['uri'] !== $item['parent-uri'] ) {
2833
2834                 $tpl = get_markup_template('diaspora_relay_retraction.tpl');
2835                 $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment');
2836         }
2837         else {
2838
2839                 $tpl = get_markup_template('diaspora_signed_retract.tpl');
2840                 $target_type = 'StatusMessage';
2841         }
2842
2843         $signed_text = $item['guid'] . ';' . $target_type;
2844
2845         $msg = replace_macros($tpl, array(
2846                 '$guid'   => xmlify($item['guid']),
2847                 '$type'   => xmlify($target_type),
2848                 '$handle' => xmlify($myaddr),
2849                 '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')))
2850         ));
2851
2852         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)));
2853         //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch));
2854
2855         return(diaspora_transmit($owner,$contact,$slap,$public_batch));
2856 }
2857
2858 function diaspora_send_mail($item,$owner,$contact) {
2859
2860         $a = get_app();
2861         $myaddr = $owner['nickname'] . '@' .  substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
2862
2863         $r = q("select * from conv where id = %d and uid = %d limit 1",
2864                 intval($item['convid']),
2865                 intval($item['uid'])
2866         );
2867
2868         if(! count($r)) {
2869                 logger('diaspora_send_mail: conversation not found.');
2870                 return;
2871         }
2872         $cnv = $r[0];
2873
2874         $conv = array(
2875                 'guid' => xmlify($cnv['guid']),
2876                 'subject' => xmlify($cnv['subject']),
2877                 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')),
2878                 'diaspora_handle' => xmlify($cnv['creator']),
2879                 'participant_handles' => xmlify($cnv['recips'])
2880         );
2881
2882         $body = bb2diaspora($item['body']);
2883         $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C');
2884
2885         $signed_text =  $item['guid'] . ';' . $cnv['guid'] . ';' . $body .  ';'
2886                 . $created . ';' . $myaddr . ';' . $cnv['guid'];
2887
2888         $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'));
2889
2890         $msg = array(
2891                 'guid' => xmlify($item['guid']),
2892                 'parent_guid' => xmlify($cnv['guid']),
2893                 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)),
2894                 'author_signature' => xmlify($sig),
2895                 'text' => xmlify($body),
2896                 'created_at' => xmlify($created),
2897                 'diaspora_handle' => xmlify($myaddr),
2898                 'conversation_guid' => xmlify($cnv['guid'])
2899         );
2900
2901         if($item['reply']) {
2902                 $tpl = get_markup_template('diaspora_message.tpl');
2903                 $xmsg = replace_macros($tpl, array('$msg' => $msg));
2904         }
2905         else {
2906                 $conv['messages'] = array($msg);
2907                 $tpl = get_markup_template('diaspora_conversation.tpl');
2908                 $xmsg = replace_macros($tpl, array('$conv' => $conv));
2909         }
2910
2911         logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA);
2912
2913         $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)));
2914         //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false));
2915
2916         return(diaspora_transmit($owner,$contact,$slap,false));
2917
2918
2919 }
2920
2921 function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) {
2922
2923         $enabled = intval(get_config('system','diaspora_enabled'));
2924         if(! $enabled) {
2925                 return 200;
2926         }
2927
2928         $a = get_app();
2929         $logid = random_string(4);
2930         $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']);
2931         if(! $dest_url) {
2932                 logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
2933                 return 0;
2934         }
2935
2936         logger('diaspora_transmit: ' . $logid . ' ' . $dest_url);
2937
2938         if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) {
2939                 $return_code = 0;
2940         }
2941         else {
2942                 if (!intval(get_config('system','diaspora_test'))) {
2943                         post_url($dest_url . '/', $slap);
2944                         $return_code = $a->get_curl_code();
2945                 } else {
2946                         logger('diaspora_transmit: test_mode');
2947                         return 200;
2948                 }
2949         }
2950
2951         logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code);
2952
2953         if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) {
2954                 logger('diaspora_transmit: queue message');
2955
2956                 $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1",
2957                         intval($contact['id']),
2958                         dbesc(NETWORK_DIASPORA),
2959                         dbesc($slap),
2960                         intval($public_batch)
2961                 );
2962                 if(count($r)) {
2963                         logger('diaspora_transmit: add_to_queue ignored - identical item already in queue');
2964                 }
2965                 else {
2966                         // queue message for redelivery
2967                         add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch);
2968                 }
2969         }
2970
2971
2972         return(($return_code) ? $return_code : (-1));
2973 }
2974
2975