mod/dfrn_request.php

   1 <?php
   2
   3 /**
   4  *
   5  * Module: dfrn_request
   6  *
   7  * Purpose: Handles communication associated with the issuance of
   8  * friend requests.
   9  *
  10  */
  11
  12 require_once('include/enotify.php');
  13 require_once('include/Scrape.php');
  14 require_once('include/group.php');
  15
  16 if(! function_exists('dfrn_request_init')) {
  17 function dfrn_request_init(&$a) {
  18
  19         if($a->argc > 1)
  20                 $which = $a->argv[1];
  21
  22         profile_load($a,$which);
  23         return;
  24 }}
  25
  26
  27 /**
  28  * Function: dfrn_request_post
  29  *
  30  * Purpose:
  31  * Handles multiple scenarios.
  32  *
  33  * Scenario 1:
  34  * Clicking 'submit' on a friend request page.
  35  *
  36  * Scenario 2:
  37  * Following Scenario 1, we are brought back to our home site
  38  * in order to link our friend request with our own server cell.
  39  * After logging in, we click 'submit' to approve the linkage.
  40  *
  41  */
  42
  43 if(! function_exists('dfrn_request_post')) {
  44 function dfrn_request_post(&$a) {
  45
  46         if(($a->argc != 2) || (! count($a->profile))) {
  47                 logger('Wrong count of argc or profiles: argc=' . $a->argc . ',profile()=' . count($a->profile));
  48                 return;
  49         }
  50
  51
  52         if(x($_POST, 'cancel')) {
  53                 goaway(z_root());
  54         }
  55
  56
  57         /**
  58          *
  59          * Scenario 2: We've introduced ourself to another cell, then have been returned to our own cell
  60          * to confirm the request, and then we've clicked submit (perhaps after logging in).
  61          * That brings us here:
  62          *
  63          */
  64
  65         if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
  66
  67                 /**
  68                  * Ensure this is a valid request
  69                  */
  70
  71                 if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
  72
  73
  74                         $dfrn_url    = notags(trim($_POST['dfrn_url']));
  75                         $aes_allow   = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
  76                         $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
  77                         $hidden = ((x($_POST,'hidden-contact')) ? intval($_POST['hidden-contact']) : 0);
  78                         $contact_record = null;
  79
  80                         if(x($dfrn_url)) {
  81
  82                                 /**
  83                                  * Lookup the contact based on their URL (which is the only unique thing we have at the moment)
  84                                  */
  85
  86                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND (`url` = '%s' OR `nurl` = '%s') AND `self` = 0 LIMIT 1",
  87                                         intval(local_user()),
  88                                         dbesc($dfrn_url),
  89                                         dbesc(normalise_link($dfrn_url))
  90                                 );
  91
  92                                 if(count($r)) {
  93                                         if(strlen($r[0]['dfrn-id'])) {
  94
  95                                                 /**
  96                                                  * We don't need to be here. It has already happened.
  97                                                  */
  98
  99                                                 notice( t("This introduction has already been accepted.") . EOL );
 100                                                 return;
 101                                         }
 102                                         else
 103                                                 $contact_record = $r[0];
 104                                 }
 105
 106                                 if(is_array($contact_record)) {
 107                                         $r = q("UPDATE `contact` SET `ret-aes` = %d, hidden = %d WHERE `id` = %d",
 108                                                 intval($aes_allow),
 109                                                 intval($hidden),
 110                                                 intval($contact_record['id'])
 111                                         );
 112                                 }
 113                                 else {
 114
 115                                         /**
 116                                          * Scrape the other site's profile page to pick up the dfrn links, key, fn, and photo
 117                                          */
 118
 119                                         $parms = scrape_dfrn($dfrn_url);
 120
 121                                         if(! count($parms)) {
 122                                                 notice( t('Profile location is not valid or does not contain profile information.') . EOL );
 123                                                 return;
 124                                         }
 125                                         else {
 126                                                 if(! x($parms,'fn'))
 127                                                         notice( t('Warning: profile location has no identifiable owner name.') . EOL );
 128                                                 if(! x($parms,'photo'))
 129                                                         notice( t('Warning: profile location has no profile photo.') . EOL );
 130                                                 $invalid = validate_dfrn($parms);
 131                                                 if($invalid) {
 132                                                         notice( sprintf( tt("%d required parameter was not found at the given location",
 133                                                                                                 "%d required parameters were not found at the given location",
 134                                                                                                 $invalid), $invalid) . EOL );
 135                                                         return;
 136                                                 }
 137                                         }
 138
 139                                         $dfrn_request = $parms['dfrn-request'];
 140
 141                                         $photo = $parms["photo"];
 142
 143                                         /********* Escape the entire array ********/
 144
 145                                         dbesc_array($parms);
 146
 147                                         /******************************************/
 148
 149                                         /**
 150                                          * Create a contact record on our site for the other person
 151                                          */
 152
 153                                         $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `nurl`, `addr`, `name`, `nick`, `photo`, `site-pubkey`,
 154                                                 `request`, `confirm`, `notify`, `poll`, `poco`, `network`, `aes_allow`, `hidden`)
 155                                                 VALUES ( %d, '%s', '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
 156                                                 intval(local_user()),
 157                                                 datetime_convert(),
 158                                                 dbesc($dfrn_url),
 159                                                 dbesc(normalise_link($dfrn_url)),
 160                                                 $parms['addr'],
 161                                                 $parms['fn'],
 162                                                 $parms['nick'],
 163                                                 $parms['photo'],
 164                                                 $parms['key'],
 165                                                 $parms['dfrn-request'],
 166                                                 $parms['dfrn-confirm'],
 167                                                 $parms['dfrn-notify'],
 168                                                 $parms['dfrn-poll'],
 169                                                 $parms['dfrn-poco'],
 170                                                 dbesc(NETWORK_DFRN),
 171                                                 intval($aes_allow),
 172                                                 intval($hidden)
 173                                         );
 174                                 }
 175
 176                                 if($r) {
 177                                         info( t("Introduction complete.") . EOL);
 178                                 }
 179
 180                                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `site-pubkey` = '%s' LIMIT 1",
 181                                         intval(local_user()),
 182                                         dbesc($dfrn_url),
 183                                         $parms['key'] // this was already escaped
 184                                 );
 185                                 if(count($r)) {
 186                                         $def_gid = get_default_group(local_user(), $r[0]["network"]);
 187                                         if(intval($def_gid))
 188                                                 group_add_member(local_user(), '', $r[0]['id'], $def_gid);
 189
 190                                         if (isset($photo))
 191                                                 update_contact_avatar($photo, local_user(), $r[0]["id"], true);
 192
 193                                         $forwardurl = $a->get_baseurl()."/contacts/".$r[0]['id'];
 194                                 } else
 195                                         $forwardurl = $a->get_baseurl()."/contacts";
 196
 197                                 /**
 198                                  * Allow the blocked remote notification to complete
 199                                  */
 200
 201                                 if(is_array($contact_record))
 202                                         $dfrn_request = $contact_record['request'];
 203
 204                                 if(strlen($dfrn_request) && strlen($confirm_key))
 205                                         $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
 206
 207                                 // (ignore reply, nothing we can do it failed)
 208
 209                                 // Old: goaway(zrl($dfrn_url));
 210                                 goaway($forwardurl);
 211                                 return; // NOTREACHED
 212
 213                         }
 214
 215                 }
 216
 217                 // invalid/bogus request
 218
 219                 notice( t('Unrecoverable protocol error.') . EOL );
 220                 goaway(z_root());
 221                 return; // NOTREACHED
 222         }
 223
 224         /**
 225          * Otherwise:
 226          *
 227          * Scenario 1:
 228          * We are the requestee. A person from a remote cell has made an introduction
 229          * on our profile web page and clicked submit. We will use their DFRN-URL to
 230          * figure out how to contact their cell.
 231          *
 232          * Scrape the originating DFRN-URL for everything we need. Create a contact record
 233          * and an introduction to show our user next time he/she logs in.
 234          * Finally redirect back to the requestor so that their site can record the request.
 235          * If our user (the requestee) later confirms this request, a record of it will need
 236          * to exist on the requestor's cell in order for the confirmation process to complete..
 237          *
 238          * It's possible that neither the requestor or the requestee are logged in at the moment,
 239          * and the requestor does not yet have any credentials to the requestee profile.
 240          *
 241          * Who is the requestee? We've already loaded their profile which means their nickname should be
 242          * in $a->argv[1] and we should have their complete info in $a->profile.
 243          *
 244          */
 245
 246         if(! (is_array($a->profile) && count($a->profile))) {
 247                 notice( t('Profile unavailable.') . EOL);
 248                 return;
 249         }
 250
 251         $nickname       = $a->profile['nickname'];
 252         $notify_flags   = $a->profile['notify-flags'];
 253         $uid            = $a->profile['uid'];
 254         $maxreq         = intval($a->profile['maxreq']);
 255         $contact_record = null;
 256         $failed         = false;
 257         $parms          = null;
 258
 259
 260         if( x($_POST,'dfrn_url')) {
 261
 262                 /**
 263                  * Block friend request spam
 264                  */
 265
 266                 if($maxreq) {
 267                         $r = q("SELECT * FROM `intro` WHERE `datetime` > '%s' AND `uid` = %d",
 268                                 dbesc(datetime_convert('UTC','UTC','now - 24 hours')),
 269                                 intval($uid)
 270                         );
 271                         if(count($r) > $maxreq) {
 272                                 notice( sprintf( t('%s has received too many connection requests today.'),  $a->profile['name']) . EOL);
 273                                 notice( t('Spam protection measures have been invoked.') . EOL);
 274                                 notice( t('Friends are advised to please try again in 24 hours.') . EOL);
 275                                 return;
 276                         }
 277                 }
 278
 279                 /**
 280                  *
 281                  * Cleanup old introductions that remain blocked.
 282                  * Also remove the contact record, but only if there is no existing relationship
 283                  * Do not remove email contacts as these may be awaiting email verification
 284                  */
 285
 286                 $r = q("SELECT `intro`.*, `intro`.`id` AS `iid`, `contact`.`id` AS `cid`, `contact`.`rel`
 287                         FROM `intro` LEFT JOIN `contact` on `intro`.`contact-id` = `contact`.`id`
 288                         WHERE `intro`.`blocked` = 1 AND `contact`.`self` = 0
 289                         AND `contact`.`network` != '%s'
 290                         AND `intro`.`datetime` < UTC_TIMESTAMP() - INTERVAL 30 MINUTE ",
 291                         dbesc(NETWORK_MAIL2)
 292                 );
 293                 if(count($r)) {
 294                         foreach($r as $rr) {
 295                                 if(! $rr['rel']) {
 296                                         q("DELETE FROM `contact` WHERE `id` = %d",
 297                                                 intval($rr['cid'])
 298                                         );
 299                                 }
 300                                 q("DELETE FROM `intro` WHERE `id` = %d",
 301                                         intval($rr['iid'])
 302                                 );
 303                         }
 304                 }
 305
 306                 /**
 307                  *
 308                  * Cleanup any old email intros - which will have a greater lifetime
 309                  */
 310
 311                 $r = q("SELECT `intro`.*, `intro`.`id` AS `iid`, `contact`.`id` AS `cid`, `contact`.`rel`
 312                         FROM `intro` LEFT JOIN `contact` on `intro`.`contact-id` = `contact`.`id`
 313                         WHERE `intro`.`blocked` = 1 AND `contact`.`self` = 0
 314                         AND `contact`.`network` = '%s'
 315                         AND `intro`.`datetime` < UTC_TIMESTAMP() - INTERVAL 3 DAY ",
 316                         dbesc(NETWORK_MAIL2)
 317                 );
 318                 if(count($r)) {
 319                         foreach($r as $rr) {
 320                                 if(! $rr['rel']) {
 321                                         q("DELETE FROM `contact` WHERE `id` = %d",
 322                                                 intval($rr['cid'])
 323                                         );
 324                                 }
 325                                 q("DELETE FROM `intro` WHERE `id` = %d",
 326                                         intval($rr['iid'])
 327                                 );
 328                         }
 329                 }
 330
 331                 $email_follow = (x($_POST,'email_follow') ? intval($_POST['email_follow']) : 0);
 332                 $real_name = (x($_POST,'realname') ? notags(trim($_POST['realname'])) : '');
 333
 334                 $url = trim($_POST['dfrn_url']);
 335                 if(! strlen($url)) {
 336                         notice( t("Invalid locator") . EOL );
 337                         return;
 338                 }
 339
 340                 $hcard = '';
 341
 342                 if($email_follow) {
 343
 344                         if(! validate_email($url)) {
 345                                 notice( t('Invalid email address.') . EOL);
 346                                 return;
 347                         }
 348
 349                         $addr    = $url;
 350                         $name    = ($realname) ? $realname : $addr;
 351                         $nick    = substr($addr,0,strpos($addr,'@'));
 352                         $url     = 'http://' . substr($addr,strpos($addr,'@') + 1);
 353                         $nurl    = normalise_url($host);
 354                         $poll    = 'email ' . random_string();
 355                         $notify  = 'smtp ' . random_string();
 356                         $blocked = 1;
 357                         $pending = 1;
 358                         $network = NETWORK_MAIL2;
 359                         $rel     = CONTACT_IS_FOLLOWER;
 360
 361                         $mail_disabled = ((function_exists('imap_open') && (! get_config('system','imap_disabled'))) ? 0 : 1);
 362                         if(get_config('system','dfrn_only'))
 363                                 $mail_disabled = 1;
 364
 365                         if(! $mail_disabled) {
 366                                 $failed = false;
 367                                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d LIMIT 1",
 368                                         intval($uid)
 369                                 );
 370                                 if(! count($r)) {
 371
 372                                         notice( t('This account has not been configured for email. Request failed.') . EOL);
 373                                         return;
 374                                 }
 375                         }
 376
 377                         $r = q("insert into contact ( uid, created, addr, name, nick, url, nurl, poll, notify, blocked, pending, network, rel )
 378                                 values( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d ) ",
 379                                 intval($uid),
 380                                 dbesc(datetime_convert()),
 381                                 dbesc($addr),
 382                                 dbesc($name),
 383                                 dbesc($nick),
 384                                 dbesc($url),
 385                                 dbesc($nurl),
 386                                 dbesc($poll),
 387                                 dbesc($notify),
 388                                 intval($blocked),
 389                                 intval($pending),
 390                                 dbesc($network),
 391                                 intval($rel)
 392                         );
 393
 394                         $r = q("SELECT `id`, `network` FROM `contact` WHERE `poll` = '%s' AND `uid` = %d LIMIT 1",
 395                                 dbesc($poll),
 396                                 intval($uid)
 397                         );
 398                         if(count($r)) {
 399                                 $contact_id = $r[0]['id'];
 400
 401                                 $def_gid = get_default_group($uid, $r[0]["network"]);
 402                                 if (intval($def_gid))
 403                                         group_add_member($uid, '', $contact_id, $def_gid);
 404
 405                                 $photo = avatar_img($addr);
 406
 407                                 $r = q("UPDATE `contact` SET
 408                                         `photo` = '%s',
 409                                         `thumb` = '%s',
 410                                         `micro` = '%s',
 411                                         `name-date` = '%s',
 412                                         `uri-date` = '%s',
 413                                         `avatar-date` = '%s',
 414                                         `hidden` = 0,
 415                                         WHERE `id` = %d
 416                                 ",
 417                                         dbesc($photos[0]),
 418                                         dbesc($photos[1]),
 419                                         dbesc($photos[2]),
 420                                         dbesc(datetime_convert()),
 421                                         dbesc(datetime_convert()),
 422                                         dbesc(datetime_convert()),
 423                                         intval($contact_id)
 424                                 );
 425                         }
 426
 427                         // contact is created. Now create an introduction
 428
 429                         $hash = random_string();
 430
 431                         $r = q("insert into intro ( uid, `contact-id`, knowyou, note, hash, datetime, blocked )
 432                                 values( %d , %d, %d, '%s', '%s', '%s', %d ) ",
 433                                 intval($uid),
 434                                 intval($contact_id),
 435                                 ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
 436                                 dbesc(notags(trim($_POST['dfrn-request-message']))),
 437                                 dbesc($hash),
 438                                 dbesc(datetime_convert()),
 439                                 1
 440                         );
 441
 442                         // Next send an email verify form to the requestor.
 443
 444                 } else {
 445                         // Detect the network
 446                         $data = probe_url($url);
 447                         $network = $data["network"];
 448
 449                         // Canonicalise email-style profile locator
 450                         $url = webfinger_dfrn($url,$hcard);
 451
 452                         if (substr($url,0,5) === 'stat:') {
 453
 454                                 // Every time we detect the remote subscription we define this as OStatus.
 455                                 // We do this even if it is not OStatus.
 456                                 // we only need to pass this through another section of the code.
 457                                 if ($network != NETWORK_DIASPORA)
 458                                         $network = NETWORK_OSTATUS;
 459
 460                                 $url = substr($url,5);
 461                         } else
 462                                 $network = NETWORK_DFRN;
 463                 }
 464
 465                 logger('dfrn_request: url: ' . $url . ',network=' . $network, LOGGER_DEBUG);
 466
 467                 if($network === NETWORK_DFRN) {
 468                         $ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `self` = 0 LIMIT 1",
 469                                 intval($uid),
 470                                 dbesc($url)
 471                         );
 472
 473                         if(count($ret)) {
 474                                 if(strlen($ret[0]['issued-id'])) {
 475                                         notice( t('You have already introduced yourself here.') . EOL );
 476                                         return;
 477                                 }
 478                                 elseif($ret[0]['rel'] == CONTACT_IS_FRIEND) {
 479                                         notice( sprintf( t('Apparently you are already friends with %s.'), $a->profile['name']) . EOL);
 480                                         return;
 481                                 }
 482                                 else {
 483                                         $contact_record = $ret[0];
 484                                         $parms = array('dfrn-request' => $ret[0]['request']);
 485                                 }
 486                         }
 487
 488                         $issued_id = random_string();
 489
 490                         if(is_array($contact_record)) {
 491                                 // There is a contact record but no issued-id, so this
 492                                 // is a reciprocal introduction from a known contact
 493                                 $r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d",
 494                                         dbesc($issued_id),
 495                                         intval($contact_record['id'])
 496                                 );
 497                         }
 498                         else {
 499                                 if(! validate_url($url)) {
 500                                         notice( t('Invalid profile URL.') . EOL);
 501                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 502                                         return; // NOTREACHED
 503                                 }
 504
 505                                 if(! allowed_url($url)) {
 506                                         notice( t('Disallowed profile URL.') . EOL);
 507                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 508                                         return; // NOTREACHED
 509                                 }
 510
 511
 512                                 require_once('include/Scrape.php');
 513
 514                                 $parms = scrape_dfrn(($hcard) ? $hcard : $url);
 515
 516                                 if(! count($parms)) {
 517                                         notice( t('Profile location is not valid or does not contain profile information.') . EOL );
 518                                         goaway($a->get_baseurl() . '/' . $a->cmd);
 519                                 }
 520                                 else {
 521                                         if(! x($parms,'fn'))
 522                                                 notice( t('Warning: profile location has no identifiable owner name.') . EOL );
 523                                         if(! x($parms,'photo'))
 524                                                 notice( t('Warning: profile location has no profile photo.') . EOL );
 525                                         $invalid = validate_dfrn($parms);
 526                                         if($invalid) {
 527                                                 notice( sprintf( tt("%d required parameter was not found at the given location",
 528                                                                                         "%d required parameters were not found at the given location",
 529                                                                                         $invalid), $invalid) . EOL );
 530
 531                                                 return;
 532                                         }
 533                                 }
 534
 535
 536                                 $parms['url'] = $url;
 537                                 $parms['issued-id'] = $issued_id;
 538                                 $photo = $parms["photo"];
 539
 540                                 dbesc_array($parms);
 541                                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `name`, `nick`, `issued-id`, `photo`, `site-pubkey`,
 542                                         `request`, `confirm`, `notify`, `poll`, `poco`, `network` )
 543                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )",
 544                                         intval($uid),
 545                                         dbesc(datetime_convert()),
 546                                         $parms['url'],
 547                                         dbesc(normalise_link($url)),
 548                                         $parms['addr'],
 549                                         $parms['fn'],
 550                                         $parms['nick'],
 551                                         $parms['issued-id'],
 552                                         $parms['photo'],
 553                                         $parms['key'],
 554                                         $parms['dfrn-request'],
 555                                         $parms['dfrn-confirm'],
 556                                         $parms['dfrn-notify'],
 557                                         $parms['dfrn-poll'],
 558                                         $parms['dfrn-poco'],
 559                                         dbesc(NETWORK_DFRN)
 560                                 );
 561
 562                                 // find the contact record we just created
 563                                 if($r) {
 564                                         $r = q("SELECT `id` FROM `contact`
 565                                                 WHERE `uid` = %d AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
 566                                                 intval($uid),
 567                                                 $parms['url'],
 568                                                 $parms['issued-id']
 569                                         );
 570                                         if(count($r)) {
 571                                                 $contact_record = $r[0];
 572                                                 update_contact_avatar($photo, $uid, $contact_record["id"], true);
 573                                         }
 574                                 }
 575
 576                         }
 577                         if($r === false) {
 578                                 notice( t('Failed to update contact record.') . EOL );
 579                                 return;
 580                         }
 581
 582                         $hash = random_string() . (string) time();   // Generate a confirm_key
 583
 584                         if(is_array($contact_record)) {
 585                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
 586                                         VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
 587                                         intval($uid),
 588                                         intval($contact_record['id']),
 589                                         ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
 590                                         dbesc(notags(trim($_POST['dfrn-request-message']))),
 591                                         dbesc($hash),
 592                                         dbesc(datetime_convert())
 593                                 );
 594                         }
 595
 596                         // This notice will only be seen by the requestor if the requestor and requestee are on the same server.
 597
 598                         if(! $failed)
 599                                 info( t('Your introduction has been sent.') . EOL );
 600
 601                         // "Homecoming" - send the requestor back to their site to record the introduction.
 602
 603                         $dfrn_url = bin2hex($a->get_baseurl() . '/profile/' . $nickname);
 604                         $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
 605
 606                         goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url"
 607                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 608                                 . '&confirm_key='  . $hash
 609                                 . (($aes_allow) ? "&aes_allow=1" : "")
 610                         );
 611                         // NOTREACHED
 612                         // END $network === NETWORK_DFRN
 613                 } elseif (($network != NETWORK_PHANTOM) AND ($url != "")) {
 614
 615                         /**
 616                          *
 617                          * Substitute our user's feed URL into $url template
 618                          * Send the subscriber home to subscribe
 619                          *
 620                          */
 621
 622                         // Diaspora needs the uri in the format user@domain.tld
 623                         // Diaspora will support the remote subscription in a future version
 624                         if ($network == NETWORK_DIASPORA) {
 625                                 $uri = $nickname.'@'.$a->get_hostname();
 626
 627                                 if ($a->get_path())
 628                                         $uri .= '/'.$a->get_path();
 629
 630                                 $uri = urlencode($uri);
 631                         } else
 632                                 $uri = $a->get_baseurl().'/profile/'.$nickname;
 633
 634                         $url = str_replace('{uri}', $uri, $url);
 635                         goaway($url);
 636                         // NOTREACHED
 637                         // END $network != NETWORK_PHANTOM
 638                 } else {
 639                         notice(t("Remote subscription can't be done for your network. Please subscribe directly on your system.").EOL);
 640                         return;
 641                 }
 642
 643         }       return;
 644 }}
 645
 646
 647
 648
 649 if(! function_exists('dfrn_request_content')) {
 650 function dfrn_request_content(&$a) {
 651
 652         if(($a->argc != 2) || (! count($a->profile)))
 653                 return "";
 654
 655
 656         // "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
 657         // to send us to the post section to record the introduction.
 658
 659         if(x($_GET,'dfrn_url')) {
 660
 661                 if(! local_user()) {
 662                         info( t("Please login to confirm introduction.") . EOL );
 663                         /* setup the return URL to come back to this page if they use openid */
 664                         $_SESSION['return_url'] = $a->query_string;
 665                         return login();
 666                 }
 667
 668                 // Edge case, but can easily happen in the wild. This person is authenticated,
 669                 // but not as the person who needs to deal with this request.
 670
 671                 if ($a->user['nickname'] != $a->argv[1]) {
 672                         notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
 673                         return login();
 674                 }
 675
 676                 $dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
 677                 $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
 678                 $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
 679
 680                 // Checking fastlane for validity
 681                 if (x($_SESSION, "fastlane") AND (normalise_link($_SESSION["fastlane"]) == normalise_link($dfrn_url))) {
 682                         $_POST["dfrn_url"] = $dfrn_url;
 683                         $_POST["confirm_key"] = $confirm_key;
 684                         $_POST["localconfirm"] = 1;
 685                         $_POST["hidden-contact"] = 0;
 686                         $_POST["submit"] = t('Confirm');
 687
 688                         dfrn_request_post($a);
 689
 690                         killme();
 691                         return; // NOTREACHED
 692                 }
 693
 694                 $tpl = get_markup_template("dfrn_req_confirm.tpl");
 695                 $o  = replace_macros($tpl,array(
 696                         '$dfrn_url' => $dfrn_url,
 697                         '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
 698                         '$hidethem' => t('Hide this contact'),
 699                         '$hidechecked' => '',
 700                         '$confirm_key' => $confirm_key,
 701                         '$welcome' => sprintf( t('Welcome home %s.'), $a->user['username']),
 702                         '$please' => sprintf( t('Please confirm your introduction/connection request to %s.'), $dfrn_url),
 703                         '$submit' => t('Confirm'),
 704                         '$uid' => $_SESSION['uid'],
 705                         '$nickname' => $a->user['nickname'],
 706                         'dfrn_rawurl' => $_GET['dfrn_url']
 707                         ));
 708                 return $o;
 709
 710         }
 711         elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
 712
 713                 // we are the requestee and it is now safe to send our user their introduction,
 714                 // We could just unblock it, but first we have to jump through a few hoops to
 715                 // send an email, or even to find out if we need to send an email.
 716
 717                 $intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
 718                         dbesc($_GET['confirm_key'])
 719                 );
 720
 721                 if(count($intro)) {
 722
 723                         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 724                                 WHERE `contact`.`id` = %d LIMIT 1",
 725                                 intval($intro[0]['contact-id'])
 726                         );
 727
 728                         $auto_confirm = false;
 729
 730                         if(count($r)) {
 731                                 if(($r[0]['page-flags'] != PAGE_NORMAL) && ($r[0]['page-flags'] != PAGE_PRVGROUP))
 732                                         $auto_confirm = true;
 733
 734                                 if(! $auto_confirm) {
 735
 736                                         notification(array(
 737                                                 'type'         => NOTIFY_INTRO,
 738                                                 'notify_flags' => $r[0]['notify-flags'],
 739                                                 'language'     => $r[0]['language'],
 740                                                 'to_name'      => $r[0]['username'],
 741                                                 'to_email'     => $r[0]['email'],
 742                                                 'uid'          => $r[0]['uid'],
 743                                                 'link'             => $a->get_baseurl() . '/notifications/intros',
 744                                                 'source_name'  => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
 745                                                 'source_link'  => $r[0]['url'],
 746                                                 'source_photo' => $r[0]['photo'],
 747                                                 'verb'         => ACTIVITY_REQ_FRIEND,
 748                                                 'otype'        => 'intro'
 749                                         ));
 750                                 }
 751
 752                                 if($auto_confirm) {
 753                                         require_once('mod/dfrn_confirm.php');
 754                                         $handsfree = array(
 755                                                 'uid' => $r[0]['uid'],
 756                                                 'node' => $r[0]['nickname'],
 757                                                 'dfrn_id' => $r[0]['issued-id'],
 758                                                 'intro_id' => $intro[0]['id'],
 759                                                 'duplex' => (($r[0]['page-flags'] == PAGE_FREELOVE) ? 1 : 0),
 760                                                 'activity' => intval(get_pconfig($r[0]['uid'],'system','post_newfriend'))
 761                                         );
 762                                         dfrn_confirm_post($a,$handsfree);
 763                                 }
 764
 765                         }
 766
 767                         if(! $auto_confirm) {
 768
 769                                 // If we are auto_confirming, this record will have already been nuked
 770                                 // in dfrn_confirm_post()
 771
 772                                 $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s'",
 773                                         dbesc($_GET['confirm_key'])
 774                                 );
 775                         }
 776                 }
 777
 778                 killme();
 779                 return; // NOTREACHED
 780         }
 781         else {
 782
 783                 /**
 784                  * Normal web request. Display our user's introduction form.
 785                  */
 786
 787                 if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
 788                         if(! get_config('system','local_block')) {
 789                                 notice( t('Public access denied.') . EOL);
 790                                 return;
 791                         }
 792                 }
 793
 794
 795                 /**
 796                  * Try to auto-fill the profile address
 797                  */
 798
 799                 // At first look if an address was provided
 800                 // Otherwise take the local address
 801                 if (x($_GET,'addr') AND ($_GET['addr'] != ""))
 802                         $myaddr = hex2bin($_GET['addr']);
 803                 elseif (x($_GET,'address') AND ($_GET['address'] != ""))
 804                         $myaddr = $_GET['address'];
 805                 elseif(local_user()) {
 806                         if(strlen($a->path)) {
 807                                 $myaddr = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
 808                         }
 809                         else {
 810                                 $myaddr = $a->user['nickname'] . '@' . substr(z_root(), strpos(z_root(),'://') + 3 );
 811                         }
 812                 } else  // last, try a zrl
 813                         $myaddr = get_my_url();
 814
 815                 $target_addr = $a->profile['nickname'] . '@' . substr(z_root(), strpos(z_root(),'://') + 3 );
 816
 817
 818                 /**
 819                  *
 820                  * The auto_request form only has the profile address
 821                  * because nobody is going to read the comments and
 822                  * it doesn't matter if they know you or not.
 823                  *
 824                  */
 825
 826                 if($a->profile['page-flags'] == PAGE_NORMAL)
 827                         $tpl = get_markup_template('dfrn_request.tpl');
 828                 else
 829                         $tpl = get_markup_template('auto_request.tpl');
 830
 831                 $page_desc = t("Please enter your 'Identity Address' from one of the following supported communications networks:");
 832
 833                 // see if we are allowed to have NETWORK_MAIL2 contacts
 834
 835                 $mail_disabled = ((function_exists('imap_open') && (! get_config('system','imap_disabled'))) ? 0 : 1);
 836                 if(get_config('system','dfrn_only'))
 837                         $mail_disabled = 1;
 838
 839                 if(! $mail_disabled) {
 840                         $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d LIMIT 1",
 841                                 intval($a->profile['uid'])
 842                         );
 843                         if(! count($r))
 844                                 $mail_disabled = 1;
 845                 }
 846
 847                 // "coming soon" is disabled for now
 848                 //$emailnet = (($mail_disabled) ? '' : t("<strike>Connect as an email follower</strike> \x28Coming soon\x29"));
 849                 $emailnet = "";
 850
 851                 $invite_desc = sprintf(
 852                         t('If you are not yet a member of the free social web, <a href="%s/siteinfo">follow this link to find a public Friendica site and join us today</a>.'),
 853                         get_server()
 854                 );
 855
 856                 $o = replace_macros($tpl,array(
 857                         '$header' => t('Friend/Connection Request'),
 858                         '$desc' => t('Examples: jojo@demo.friendica.com, http://demo.friendica.com/profile/jojo, testuser@identi.ca'),
 859                         '$pls_answer' => t('Please answer the following:'),
 860                         '$does_know_you' => array('knowyou', sprintf(t('Does %s know you?'),$a->profile['name']), false, '', array(t('No'),t('Yes'))),
 861                         /*'$does_know' => sprintf( t('Does %s know you?'),$a->profile['name']),
 862                         '$yes' => t('Yes'),
 863                         '$no' => t('No'), */
 864                         '$add_note' => t('Add a personal note:'),
 865                         '$page_desc' => $page_desc,
 866                         '$friendica' => t('Friendica'),
 867                         '$statusnet' => t('StatusNet/Federated Social Web'),
 868                         '$diaspora' => t('Diaspora'),
 869                         '$diasnote' => sprintf (t(' - please do not use this form.  Instead, enter %s into your Diaspora search bar.'),$target_addr),
 870                         '$your_address' => t('Your Identity Address:'),
 871                         '$invite_desc' => $invite_desc,
 872                         '$emailnet' => $emailnet,
 873                         '$submit' => t('Submit Request'),
 874                         '$cancel' => t('Cancel'),
 875                         '$nickname' => $a->argv[1],
 876                         '$name' => $a->profile['name'],
 877                         '$myaddr' => $myaddr
 878                 ));
 879                 return $o;
 880         }
 881
 882         return; // Somebody is fishing.
 883 }}