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