mod/dfrn_request.php

   1 <?php
   2 /**
   3  * @file mod/dfrn_request.php
   4  * @brief Module: dfrn_request
   5  *
   6  * Purpose: Handles communication associated with the issuance of
   7  * friend requests.
   8  *
   9  * @see PDF with dfrn specs: https://github.com/friendica/friendica/blob/master/spec/dfrn2.pdf
  10  *    You also find a graphic which describes the confirmation process at
  11  *    https://github.com/friendica/friendica/blob/master/spec/dfrn2_contact_request.png
  12  */
  13 use Friendica\App;
  14 use Friendica\Core\Config;
  15 use Friendica\Core\PConfig;
  16 use Friendica\Core\System;
  17 use Friendica\Database\DBM;
  18 use Friendica\Model\Contact;
  19 use Friendica\Model\Group;
  20 use Friendica\Model\User;
  21 use Friendica\Network\Probe;
  22
  23 require_once 'include/enotify.php';
  24 require_once 'include/group.php';
  25
  26 function dfrn_request_init(App $a)
  27 {
  28         if ($a->argc > 1)
  29                 $which = $a->argv[1];
  30
  31         profile_load($a, $which);
  32         return;
  33 }
  34
  35
  36 /**
  37  * Function: dfrn_request_post
  38  *
  39  * Purpose:
  40  * Handles multiple scenarios.
  41  *
  42  * Scenario 1:
  43  * Clicking 'submit' on a friend request page.
  44  *
  45  * Scenario 2:
  46  * Following Scenario 1, we are brought back to our home site
  47  * in order to link our friend request with our own server cell.
  48  * After logging in, we click 'submit' to approve the linkage.
  49  *
  50  */
  51 function dfrn_request_post(App $a) {
  52
  53         if(($a->argc != 2) || (! count($a->profile))) {
  54                 logger('Wrong count of argc or profiles: argc=' . $a->argc . ',profile()=' . count($a->profile));
  55                 return;
  56         }
  57
  58
  59         if(x($_POST, 'cancel')) {
  60                 goaway(System::baseUrl());
  61         }
  62
  63
  64         /*
  65          *
  66          * Scenario 2: We've introduced ourself to another cell, then have been returned to our own cell
  67          * to confirm the request, and then we've clicked submit (perhaps after logging in).
  68          * That brings us here:
  69          *
  70          */
  71
  72         if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
  73
  74                 /*
  75                  * Ensure this is a valid request
  76                  */
  77
  78                 if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
  79
  80
  81                         $dfrn_url    = notags(trim($_POST['dfrn_url']));
  82                         $aes_allow   = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
  83                         $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
  84                         $hidden = ((x($_POST,'hidden-contact')) ? intval($_POST['hidden-contact']) : 0);
  85                         $contact_record = null;
  86                         $blocked = 1;
  87                         $pending = 1;
  88
  89                         if(x($dfrn_url)) {
  90
  91                                 /*
  92                                  * Lookup the contact based on their URL (which is the only unique thing we have at the moment)
  93                                  */
  94
  95                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND NOT `self` LIMIT 1",
  96                                         intval(local_user()),
  97                                         dbesc(normalise_link($dfrn_url))
  98                                 );
  99
 100                                 if (DBM::is_result($r)) {
 101                                         if(strlen($r[0]['dfrn-id'])) {
 102
 103                                                 /*
 104                                                  * We don't need to be here. It has already happened.
 105                                                  */
 106
 107                                                 notice( t("This introduction has already been accepted.") . EOL );
 108                                                 return;
 109                                         }
 110                                         else
 111                                                 $contact_record = $r[0];
 112                                 }
 113
 114                                 if(is_array($contact_record)) {
 115                                         $r = q("UPDATE `contact` SET `ret-aes` = %d, hidden = %d WHERE `id` = %d",
 116                                                 intval($aes_allow),
 117                                                 intval($hidden),
 118                                                 intval($contact_record['id'])
 119                                         );
 120                                 }
 121                                 else {
 122
 123                                         /*
 124                                          * Scrape the other site's profile page to pick up the dfrn links, key, fn, and photo
 125                                          */
 126
 127                                         $parms = Probe::profile($dfrn_url);
 128
 129                                         if (! count($parms)) {
 130                                                 notice( t('Profile location is not valid or does not contain profile information.') . EOL );
 131                                                 return;
 132                                         }
 133                                         else {
 134                                                 if (! x($parms,'fn')) {
 135                                                         notice( t('Warning: profile location has no identifiable owner name.') . EOL );
 136                                                 }
 137                                                 if (! x($parms,'photo')) {
 138                                                         notice( t('Warning: profile location has no profile photo.') . EOL );
 139                                                 }
 140                                                 $invalid = Probe::validDfrn($parms);
 141                                                 if ($invalid) {
 142                                                         notice( sprintf( tt("%d required parameter was not found at the given location",
 143                                                                                                 "%d required parameters were not found at the given location",
 144                                                                                                 $invalid), $invalid) . EOL );
 145                                                         return;
 146                                                 }
 147                                         }
 148
 149                                         $dfrn_request = $parms['dfrn-request'];
 150
 151                                         $photo = $parms["photo"];
 152
 153                                         // Escape the entire array
 154                                         DBM::esc_array($parms);
 155
 156                                         /*
 157                                          * Create a contact record on our site for the other person
 158                                          */
 159
 160                                         $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `nurl`, `addr`, `name`, `nick`, `photo`, `site-pubkey`,
 161                                                 `request`, `confirm`, `notify`, `poll`, `poco`, `network`, `aes_allow`, `hidden`, `blocked`, `pending`)
 162                                                 VALUES ( %d, '%s', '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d)",
 163                                                 intval(local_user()),
 164                                                 datetime_convert(),
 165                                                 dbesc($dfrn_url),
 166                                                 dbesc(normalise_link($dfrn_url)),
 167                                                 $parms['addr'],
 168                                                 $parms['fn'],
 169                                                 $parms['nick'],
 170                                                 $parms['photo'],
 171                                                 $parms['key'],
 172                                                 $parms['dfrn-request'],
 173                                                 $parms['dfrn-confirm'],
 174                                                 $parms['dfrn-notify'],
 175                                                 $parms['dfrn-poll'],
 176                                                 $parms['dfrn-poco'],
 177                                                 dbesc(NETWORK_DFRN),
 178                                                 intval($aes_allow),
 179                                                 intval($hidden),
 180                                                 intval($blocked),
 181                                                 intval($pending)
 182                                         );
 183                                 }
 184
 185                                 if ($r) {
 186                                         info( t("Introduction complete.") . EOL);
 187                                 }
 188
 189                                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `site-pubkey` = '%s' LIMIT 1",
 190                                         intval(local_user()),
 191                                         dbesc($dfrn_url),
 192                                         $parms['key'] // this was already escaped
 193                                 );
 194                                 if (DBM::is_result($r)) {
 195                                         Group::addMember(User::getDefaultGroup($uid, $r[0]["network"]), $r[0]['id']);
 196
 197                                         if (isset($photo)) {
 198                                                 Contact::updateAvatar($photo, local_user(), $r[0]["id"], true);
 199                                         }
 200
 201                                         $forwardurl = System::baseUrl()."/contacts/".$r[0]['id'];
 202                                 } else {
 203                                         $forwardurl = System::baseUrl()."/contacts";
 204                                 }
 205
 206                                 /*
 207                                  * Allow the blocked remote notification to complete
 208                                  */
 209
 210                                 if (is_array($contact_record)) {
 211                                         $dfrn_request = $contact_record['request'];
 212                                 }
 213
 214                                 if (strlen($dfrn_request) && strlen($confirm_key)) {
 215                                         $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
 216                                 }
 217
 218                                 // (ignore reply, nothing we can do it failed)
 219
 220                                 // Old: goaway(zrl($dfrn_url));
 221                                 goaway($forwardurl);
 222                                 return; // NOTREACHED
 223
 224                         }
 225
 226                 }
 227
 228                 // invalid/bogus request
 229
 230                 notice( t('Unrecoverable protocol error.') . EOL );
 231                 goaway(System::baseUrl());
 232                 return; // NOTREACHED
 233         }
 234
 235         /*
 236          * Otherwise:
 237          *
 238          * Scenario 1:
 239          * We are the requestee. A person from a remote cell has made an introduction
 240          * on our profile web page and clicked submit. We will use their DFRN-URL to
 241          * figure out how to contact their cell.
 242          *
 243          * Scrape the originating DFRN-URL for everything we need. Create a contact record
 244          * and an introduction to show our user next time he/she logs in.
 245          * Finally redirect back to the requestor so that their site can record the request.
 246          * If our user (the requestee) later confirms this request, a record of it will need
 247          * to exist on the requestor's cell in order for the confirmation process to complete..
 248          *
 249          * It's possible that neither the requestor or the requestee are logged in at the moment,
 250          * and the requestor does not yet have any credentials to the requestee profile.
 251          *
 252          * Who is the requestee? We've already loaded their profile which means their nickname should be
 253          * in $a->argv[1] and we should have their complete info in $a->profile.
 254          *
 255          */
 256
 257         if(! (is_array($a->profile) && count($a->profile))) {
 258                 notice( t('Profile unavailable.') . EOL);
 259                 return;
 260         }
 261
 262         $nickname       = $a->profile['nickname'];
 263         $notify_flags   = $a->profile['notify-flags'];
 264         $uid            = $a->profile['uid'];
 265         $maxreq         = intval($a->profile['maxreq']);
 266         $contact_record = null;
 267         $failed         = false;
 268         $parms          = null;
 269         $blocked = 1;
 270         $pending = 1;
 271
 272
 273         if( x($_POST,'dfrn_url')) {
 274
 275                 /*
 276                  * Block friend request spam
 277                  */
 278
 279                 if($maxreq) {
 280                         $r = q("SELECT * FROM `intro` WHERE `datetime` > '%s' AND `uid` = %d",
 281                                 dbesc(datetime_convert('UTC','UTC','now - 24 hours')),
 282                                 intval($uid)
 283                         );
 284                         if (DBM::is_result($r) && count($r) > $maxreq) {
 285                                 notice( sprintf( t('%s has received too many connection requests today.'),  $a->profile['name']) . EOL);
 286                                 notice( t('Spam protection measures have been invoked.') . EOL);
 287                                 notice( t('Friends are advised to please try again in 24 hours.') . EOL);
 288                                 return;
 289                         }
 290                 }
 291
 292                 /*
 293                  *
 294                  * Cleanup old introductions that remain blocked.
 295                  * Also remove the contact record, but only if there is no existing relationship
 296                  */
 297
 298                 $r = q("SELECT `intro`.*, `intro`.`id` AS `iid`, `contact`.`id` AS `cid`, `contact`.`rel`
 299                         FROM `intro` LEFT JOIN `contact` on `intro`.`contact-id` = `contact`.`id`
 300                         WHERE `intro`.`blocked` = 1 AND `contact`.`self` = 0
 301                         AND `intro`.`datetime` < UTC_TIMESTAMP() - INTERVAL 30 MINUTE "
 302                 );
 303                 if (DBM::is_result($r)) {
 304                         foreach ($r as $rr) {
 305                                 if(! $rr['rel']) {
 306                                         q("DELETE FROM `contact` WHERE `id` = %d AND NOT `self`",
 307                                                 intval($rr['cid'])
 308                                         );
 309                                 }
 310                                 q("DELETE FROM `intro` WHERE `id` = %d",
 311                                         intval($rr['iid'])
 312                                 );
 313                         }
 314                 }
 315
 316                 $real_name = (x($_POST,'realname') ? notags(trim($_POST['realname'])) : '');
 317
 318                 $url = trim($_POST['dfrn_url']);
 319                 if(! strlen($url)) {
 320                         notice( t("Invalid locator") . EOL );
 321                         return;
 322                 }
 323
 324                 $hcard = '';
 325
 326                 // Detect the network
 327                 $data = Probe::uri($url);
 328                 $network = $data["network"];
 329
 330                 // Canonicalise email-style profile locator
 331                 $url = Probe::webfingerDfrn($url,$hcard);
 332
 333                 if (substr($url,0,5) === 'stat:') {
 334
 335                         // Every time we detect the remote subscription we define this as OStatus.
 336                         // We do this even if it is not OStatus.
 337                         // we only need to pass this through another section of the code.
 338                         if ($network != NETWORK_DIASPORA) {
 339                                 $network = NETWORK_OSTATUS;
 340                         }
 341
 342                         $url = substr($url,5);
 343                 } else {
 344                         $network = NETWORK_DFRN;
 345                 }
 346
 347                 logger('dfrn_request: url: ' . $url . ',network=' . $network, LOGGER_DEBUG);
 348
 349                 if($network === NETWORK_DFRN) {
 350                         $ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `self` = 0 LIMIT 1",
 351                                 intval($uid),
 352                                 dbesc($url)
 353                         );
 354
 355                         if (DBM::is_result($ret)) {
 356                                 if(strlen($ret[0]['issued-id'])) {
 357                                         notice( t('You have already introduced yourself here.') . EOL );
 358                                         return;
 359                                 }
 360                                 elseif($ret[0]['rel'] == CONTACT_IS_FRIEND) {
 361                                         notice( sprintf( t('Apparently you are already friends with %s.'), $a->profile['name']) . EOL);
 362                                         return;
 363                                 }
 364                                 else {
 365                                         $contact_record = $ret[0];
 366                                         $parms = array('dfrn-request' => $ret[0]['request']);
 367                                 }
 368                         }
 369
 370                         $issued_id = random_string();
 371
 372                         if(is_array($contact_record)) {
 373                                 // There is a contact record but no issued-id, so this
 374                                 // is a reciprocal introduction from a known contact
 375                                 $r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d",
 376                                         dbesc($issued_id),
 377                                         intval($contact_record['id'])
 378                                 );
 379                         }
 380                         else {
 381                                 if (! validate_url($url)) {
 382                                         notice( t('Invalid profile URL.') . EOL);
 383                                         goaway(System::baseUrl() . '/' . $a->cmd);
 384                                         return; // NOTREACHED
 385                                 }
 386
 387                                 if (! allowed_url($url)) {
 388                                         notice( t('Disallowed profile URL.') . EOL);
 389                                         goaway(System::baseUrl() . '/' . $a->cmd);
 390                                         return; // NOTREACHED
 391                                 }
 392
 393                                 if (blocked_url($url)) {
 394                                         notice( t('Blocked domain') . EOL);
 395                                         goaway(System::baseUrl() . '/' . $a->cmd);
 396                                         return; // NOTREACHED
 397                                 }
 398
 399                                 $parms = Probe::profile(($hcard) ? $hcard : $url);
 400
 401                                 if (! count($parms)) {
 402                                         notice( t('Profile location is not valid or does not contain profile information.') . EOL );
 403                                         goaway(System::baseUrl() . '/' . $a->cmd);
 404                                 }
 405                                 else {
 406                                         if (! x($parms,'fn')) {
 407                                                 notice( t('Warning: profile location has no identifiable owner name.') . EOL );
 408                                         }
 409                                         if (! x($parms,'photo')) {
 410                                                 notice( t('Warning: profile location has no profile photo.') . EOL );
 411                                         }
 412                                         $invalid = Probe::validDfrn($parms);
 413                                         if ($invalid) {
 414                                                 notice( sprintf( tt("%d required parameter was not found at the given location",
 415                                                                                         "%d required parameters were not found at the given location",
 416                                                                                         $invalid), $invalid) . EOL );
 417
 418                                                 return;
 419                                         }
 420                                 }
 421
 422
 423                                 $parms['url'] = $url;
 424                                 $parms['issued-id'] = $issued_id;
 425                                 $photo = $parms["photo"];
 426
 427                                 DBM::esc_array($parms);
 428                                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `name`, `nick`, `issued-id`, `photo`, `site-pubkey`,
 429                                         `request`, `confirm`, `notify`, `poll`, `poco`, `network`, `blocked`, `pending` )
 430                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d )",
 431                                         intval($uid),
 432                                         dbesc(datetime_convert()),
 433                                         $parms['url'],
 434                                         dbesc(normalise_link($url)),
 435                                         $parms['addr'],
 436                                         $parms['fn'],
 437                                         $parms['nick'],
 438                                         $parms['issued-id'],
 439                                         $parms['photo'],
 440                                         $parms['key'],
 441                                         $parms['dfrn-request'],
 442                                         $parms['dfrn-confirm'],
 443                                         $parms['dfrn-notify'],
 444                                         $parms['dfrn-poll'],
 445                                         $parms['dfrn-poco'],
 446                                         dbesc(NETWORK_DFRN),
 447                                         intval($blocked),
 448                                         intval($pending)
 449                                 );
 450
 451                                 // find the contact record we just created
 452                                 if ($r) {
 453                                         $r = q("SELECT `id` FROM `contact`
 454                                                 WHERE `uid` = %d AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
 455                                                 intval($uid),
 456                                                 $parms['url'],
 457                                                 $parms['issued-id']
 458                                         );
 459                                         if (DBM::is_result($r)) {
 460                                                 $contact_record = $r[0];
 461                                                 Contact::updateAvatar($photo, $uid, $contact_record["id"], true);
 462                                         }
 463                                 }
 464
 465                         }
 466                         if ($r === false) {
 467                                 notice( t('Failed to update contact record.') . EOL );
 468                                 return;
 469                         }
 470
 471                         $hash = random_string() . (string) time();   // Generate a confirm_key
 472
 473                         if (is_array($contact_record)) {
 474                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
 475                                         VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
 476                                         intval($uid),
 477                                         intval($contact_record['id']),
 478                                         ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
 479                                         dbesc(notags(trim($_POST['dfrn-request-message']))),
 480                                         dbesc($hash),
 481                                         dbesc(datetime_convert())
 482                                 );
 483                         }
 484
 485                         // This notice will only be seen by the requestor if the requestor and requestee are on the same server.
 486
 487                         if (! $failed) {
 488                                 info( t('Your introduction has been sent.') . EOL );
 489                         }
 490
 491                         // "Homecoming" - send the requestor back to their site to record the introduction.
 492
 493                         $dfrn_url = bin2hex(System::baseUrl() . '/profile/' . $nickname);
 494                         $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
 495
 496                         goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url"
 497                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 498                                 . '&confirm_key='  . $hash
 499                                 . (($aes_allow) ? "&aes_allow=1" : "")
 500                         );
 501                         // NOTREACHED
 502                         // END $network === NETWORK_DFRN
 503                 } elseif (($network != NETWORK_PHANTOM) && ($url != "")) {
 504
 505                         /*
 506                          *
 507                          * Substitute our user's feed URL into $url template
 508                          * Send the subscriber home to subscribe
 509                          *
 510                          */
 511
 512                         // Diaspora needs the uri in the format user@domain.tld
 513                         // Diaspora will support the remote subscription in a future version
 514                         if ($network == NETWORK_DIASPORA) {
 515                                 $uri = $nickname.'@'.$a->get_hostname();
 516
 517                                 if ($a->get_path())
 518                                         $uri .= '/'.$a->get_path();
 519
 520                                 $uri = urlencode($uri);
 521                         } else {
 522                                 $uri = System::baseUrl().'/profile/'.$nickname;
 523                         }
 524
 525                         $url = str_replace('{uri}', $uri, $url);
 526                         goaway($url);
 527                         // NOTREACHED
 528                         // END $network != NETWORK_PHANTOM
 529                 } else {
 530                         notice(t("Remote subscription can't be done for your network. Please subscribe directly on your system.").EOL);
 531                         return;
 532                 }
 533
 534         }       return;
 535 }
 536
 537
 538 function dfrn_request_content(App $a) {
 539
 540         if (($a->argc != 2) || (! count($a->profile))) {
 541                 return "";
 542         }
 543
 544
 545         // "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
 546         // to send us to the post section to record the introduction.
 547
 548         if (x($_GET,'dfrn_url')) {
 549
 550                 if (! local_user()) {
 551                         info( t("Please login to confirm introduction.") . EOL );
 552                         /* setup the return URL to come back to this page if they use openid */
 553                         $_SESSION['return_url'] = $a->query_string;
 554                         return login();
 555                 }
 556
 557                 // Edge case, but can easily happen in the wild. This person is authenticated,
 558                 // but not as the person who needs to deal with this request.
 559
 560                 if ($a->user['nickname'] != $a->argv[1]) {
 561                         notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
 562                         return login();
 563                 }
 564
 565                 $dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
 566                 $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
 567                 $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
 568
 569                 // Checking fastlane for validity
 570                 if (x($_SESSION, "fastlane") && (normalise_link($_SESSION["fastlane"]) == normalise_link($dfrn_url))) {
 571                         $_POST["dfrn_url"] = $dfrn_url;
 572                         $_POST["confirm_key"] = $confirm_key;
 573                         $_POST["localconfirm"] = 1;
 574                         $_POST["hidden-contact"] = 0;
 575                         $_POST["submit"] = t('Confirm');
 576
 577                         dfrn_request_post($a);
 578
 579                         killme();
 580                         return; // NOTREACHED
 581                 }
 582
 583                 $tpl = get_markup_template("dfrn_req_confirm.tpl");
 584                 $o  = replace_macros($tpl,array(
 585                         '$dfrn_url' => $dfrn_url,
 586                         '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
 587                         '$hidethem' => t('Hide this contact'),
 588                         '$hidechecked' => '',
 589                         '$confirm_key' => $confirm_key,
 590                         '$welcome' => sprintf( t('Welcome home %s.'), $a->user['username']),
 591                         '$please' => sprintf( t('Please confirm your introduction/connection request to %s.'), $dfrn_url),
 592                         '$submit' => t('Confirm'),
 593                         '$uid' => $_SESSION['uid'],
 594                         '$nickname' => $a->user['nickname'],
 595                         'dfrn_rawurl' => $_GET['dfrn_url']
 596                         ));
 597                 return $o;
 598
 599         }
 600         elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
 601
 602                 // we are the requestee and it is now safe to send our user their introduction,
 603                 // We could just unblock it, but first we have to jump through a few hoops to
 604                 // send an email, or even to find out if we need to send an email.
 605
 606                 $intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
 607                         dbesc($_GET['confirm_key'])
 608                 );
 609
 610                 if (DBM::is_result($intro)) {
 611
 612                         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 613                                 WHERE `contact`.`id` = %d LIMIT 1",
 614                                 intval($intro[0]['contact-id'])
 615                         );
 616
 617                         $auto_confirm = false;
 618
 619                         if (DBM::is_result($r)) {
 620                                 if(($r[0]['page-flags'] != PAGE_NORMAL) && ($r[0]['page-flags'] != PAGE_PRVGROUP))
 621                                         $auto_confirm = true;
 622
 623                                 if(! $auto_confirm) {
 624
 625                                         notification(array(
 626                                                 'type'         => NOTIFY_INTRO,
 627                                                 'notify_flags' => $r[0]['notify-flags'],
 628                                                 'language'     => $r[0]['language'],
 629                                                 'to_name'      => $r[0]['username'],
 630                                                 'to_email'     => $r[0]['email'],
 631                                                 'uid'          => $r[0]['uid'],
 632                                                 'link'         => System::baseUrl() . '/notifications/intros',
 633                                                 'source_name'  => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
 634                                                 'source_link'  => $r[0]['url'],
 635                                                 'source_photo' => $r[0]['photo'],
 636                                                 'verb'         => ACTIVITY_REQ_FRIEND,
 637                                                 'otype'        => 'intro'
 638                                         ));
 639                                 }
 640
 641                                 if($auto_confirm) {
 642                                         require_once 'mod/dfrn_confirm.php';
 643                                         $handsfree = array(
 644                                                 'uid'      => $r[0]['uid'],
 645                                                 'node'     => $r[0]['nickname'],
 646                                                 'dfrn_id'  => $r[0]['issued-id'],
 647                                                 'intro_id' => $intro[0]['id'],
 648                                                 'duplex'   => (($r[0]['page-flags'] == PAGE_FREELOVE) ? 1 : 0),
 649                                                 'activity' => intval(PConfig::get($r[0]['uid'],'system','post_newfriend'))
 650                                         );
 651                                         dfrn_confirm_post($a,$handsfree);
 652                                 }
 653
 654                         }
 655
 656                         if(! $auto_confirm) {
 657
 658                                 // If we are auto_confirming, this record will have already been nuked
 659                                 // in dfrn_confirm_post()
 660
 661                                 $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s'",
 662                                         dbesc($_GET['confirm_key'])
 663                                 );
 664                         }
 665                 }
 666
 667                 killme();
 668                 return; // NOTREACHED
 669         }
 670         else {
 671
 672                 /*
 673                  * Normal web request. Display our user's introduction form.
 674                  */
 675
 676                 if((Config::get('system','block_public')) && (! local_user()) && (! remote_user())) {
 677                         if(! Config::get('system','local_block')) {
 678                                 notice( t('Public access denied.') . EOL);
 679                                 return;
 680                         }
 681                 }
 682
 683
 684                 /*
 685                  * Try to auto-fill the profile address
 686                  */
 687
 688                 // At first look if an address was provided
 689                 // Otherwise take the local address
 690                 if (x($_GET,'addr') && ($_GET['addr'] != "")) {
 691                         $myaddr = hex2bin($_GET['addr']);
 692                 } elseif (x($_GET,'address') && ($_GET['address'] != "")) {
 693                         $myaddr = $_GET['address'];
 694                 } elseif (local_user()) {
 695                         if (strlen($a->path)) {
 696                                 $myaddr = System::baseUrl() . '/profile/' . $a->user['nickname'];
 697                         } else {
 698                                 $myaddr = $a->user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(),'://') + 3 );
 699                         }
 700                 } else {
 701                         // last, try a zrl
 702                         $myaddr = get_my_url();
 703                 }
 704
 705                 $target_addr = $a->profile['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(),'://') + 3 );
 706
 707
 708                 /*
 709                  *
 710                  * The auto_request form only has the profile address
 711                  * because nobody is going to read the comments and
 712                  * it doesn't matter if they know you or not.
 713                  *
 714                  */
 715
 716                 if ($a->profile['page-flags'] == PAGE_NORMAL) {
 717                         $tpl = get_markup_template('dfrn_request.tpl');
 718                 } else {
 719                         $tpl = get_markup_template('auto_request.tpl');
 720                 }
 721
 722                 $page_desc = t("Please enter your 'Identity Address' from one of the following supported communications networks:");
 723
 724                 $invite_desc = sprintf(
 725                         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>.'),
 726                         get_server()
 727                 );
 728
 729                 $o = replace_macros($tpl,array(
 730                         '$header' => t('Friend/Connection Request'),
 731                         '$desc' => t('Examples: jojo@demo.friendica.com, http://demo.friendica.com/profile/jojo, testuser@gnusocial.de'),
 732                         '$pls_answer' => t('Please answer the following:'),
 733                         '$does_know_you' => array('knowyou', sprintf(t('Does %s know you?'),$a->profile['name']), false, '', array(t('No'), t('Yes'))),
 734                         /*'$does_know' => sprintf( t('Does %s know you?'),$a->profile['name']),
 735                         '$yes' => t('Yes'),
 736                         '$no' => t('No'), */
 737                         '$add_note' => t('Add a personal note:'),
 738                         '$page_desc' => $page_desc,
 739                         '$friendica' => t('Friendica'),
 740                         '$statusnet' => t('GNU Social (Pleroma, Mastodon)'),
 741                         '$diaspora' => t('Diaspora (Socialhome, Hubzilla)'),
 742                         '$diasnote' => sprintf (t(' - please do not use this form.  Instead, enter %s into your Diaspora search bar.'),$target_addr),
 743                         '$your_address' => t('Your Identity Address:'),
 744                         '$invite_desc' => $invite_desc,
 745                         '$submit' => t('Submit Request'),
 746                         '$cancel' => t('Cancel'),
 747                         '$nickname' => $a->argv[1],
 748                         '$name' => $a->profile['name'],
 749                         '$myaddr' => $myaddr
 750                 ));
 751                 return $o;
 752         }
 753
 754         return; // Somebody is fishing.
 755 }