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