]> git.mxchange.org Git - friendica.git/blob - mod/dfrn_request.php
Merge branch 'develop' into rewrites/dbm_is_result
[friendica.git] / mod / dfrn_request.php
1 <?php
2
3 /**
4  * @file mod/dfrn_request.php
5  * @brief Module: dfrn_request
6  *
7  * Purpose: Handles communication associated with the issuance of
8  * friend requests.
9  *
10  * @see PDF with dfrn specs: https://github.com/friendica/friendica/blob/master/spec/dfrn2.pdf
11  *    You also find a graphic which describes the confirmation process at
12  *    https://github.com/friendica/friendica/blob/master/spec/dfrn2_contact_request.png
13  */
14
15 require_once('include/enotify.php');
16 require_once('include/Scrape.php');
17 require_once('include/Probe.php');
18 require_once('include/group.php');
19
20 function dfrn_request_init(App &$a) {
21
22         if($a->argc > 1)
23                 $which = $a->argv[1];
24
25         profile_load($a,$which);
26         return;
27 }
28
29
30 /**
31  * Function: dfrn_request_post
32  *
33  * Purpose:
34  * Handles multiple scenarios.
35  *
36  * Scenario 1:
37  * Clicking 'submit' on a friend request page.
38  *
39  * Scenario 2:
40  * Following Scenario 1, we are brought back to our home site
41  * in order to link our friend request with our own server cell.
42  * After logging in, we click 'submit' to approve the linkage.
43  *
44  */
45 function dfrn_request_post(App &$a) {
46
47         if(($a->argc != 2) || (! count($a->profile))) {
48                 logger('Wrong count of argc or profiles: argc=' . $a->argc . ',profile()=' . count($a->profile));
49                 return;
50         }
51
52
53         if(x($_POST, 'cancel')) {
54                 goaway(z_root());
55         }
56
57
58         /*
59          *
60          * Scenario 2: We've introduced ourself to another cell, then have been returned to our own cell
61          * to confirm the request, and then we've clicked submit (perhaps after logging in).
62          * That brings us here:
63          *
64          */
65
66         if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
67
68                 /*
69                  * Ensure this is a valid request
70                  */
71
72                 if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
73
74
75                         $dfrn_url    = notags(trim($_POST['dfrn_url']));
76                         $aes_allow   = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
77                         $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
78                         $hidden = ((x($_POST,'hidden-contact')) ? intval($_POST['hidden-contact']) : 0);
79                         $contact_record = null;
80                         $blocked = 1;
81                         $pending = 1;
82
83                         if(x($dfrn_url)) {
84
85                                 /*
86                                  * Lookup the contact based on their URL (which is the only unique thing we have at the moment)
87                                  */
88
89                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND NOT `self` LIMIT 1",
90                                         intval(local_user()),
91                                         dbesc(normalise_link($dfrn_url))
92                                 );
93
94                                 if (dbm::is_result($r)) {
95                                         if(strlen($r[0]['dfrn-id'])) {
96
97                                                 /*
98                                                  * We don't need to be here. It has already happened.
99                                                  */
100
101                                                 notice( t("This introduction has already been accepted.") . EOL );
102                                                 return;
103                                         }
104                                         else
105                                                 $contact_record = $r[0];
106                                 }
107
108                                 if(is_array($contact_record)) {
109                                         $r = q("UPDATE `contact` SET `ret-aes` = %d, hidden = %d WHERE `id` = %d",
110                                                 intval($aes_allow),
111                                                 intval($hidden),
112                                                 intval($contact_record['id'])
113                                         );
114                                 }
115                                 else {
116
117                                         /*
118                                          * Scrape the other site's profile page to pick up the dfrn links, key, fn, and photo
119                                          */
120
121                                         $parms = Probe::profile($dfrn_url);
122
123                                         if (! count($parms)) {
124                                                 notice( t('Profile location is not valid or does not contain profile information.') . EOL );
125                                                 return;
126                                         }
127                                         else {
128                                                 if (! x($parms,'fn')) {
129                                                         notice( t('Warning: profile location has no identifiable owner name.') . EOL );
130                                                 }
131                                                 if (! x($parms,'photo')) {
132                                                         notice( t('Warning: profile location has no profile photo.') . EOL );
133                                                 }
134                                                 $invalid = Probe::valid_dfrn($parms);
135                                                 if ($invalid) {
136                                                         notice( sprintf( tt("%d required parameter was not found at the given location",
137                                                                                                 "%d required parameters were not found at the given location",
138                                                                                                 $invalid), $invalid) . EOL );
139                                                         return;
140                                                 }
141                                         }
142
143                                         $dfrn_request = $parms['dfrn-request'];
144
145                                         $photo = $parms["photo"];
146
147                                         // Escape the entire array
148
149                                         dbesc_array($parms);
150
151
152                                         /*
153                                          * Create a contact record on our site for the other person
154                                          */
155
156                                         $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `nurl`, `addr`, `name`, `nick`, `photo`, `site-pubkey`,
157                                                 `request`, `confirm`, `notify`, `poll`, `poco`, `network`, `aes_allow`, `hidden`, `blocked`, `pending`)
158                                                 VALUES ( %d, '%s', '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d)",
159                                                 intval(local_user()),
160                                                 datetime_convert(),
161                                                 dbesc($dfrn_url),
162                                                 dbesc(normalise_link($dfrn_url)),
163                                                 $parms['addr'],
164                                                 $parms['fn'],
165                                                 $parms['nick'],
166                                                 $parms['photo'],
167                                                 $parms['key'],
168                                                 $parms['dfrn-request'],
169                                                 $parms['dfrn-confirm'],
170                                                 $parms['dfrn-notify'],
171                                                 $parms['dfrn-poll'],
172                                                 $parms['dfrn-poco'],
173                                                 dbesc(NETWORK_DFRN),
174                                                 intval($aes_allow),
175                                                 intval($hidden),
176                                                 intval($blocked),
177                                                 intval($pending)
178                                         );
179                                 }
180
181                                 if ($r) {
182                                         info( t("Introduction complete.") . EOL);
183                                 }
184
185                                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `site-pubkey` = '%s' LIMIT 1",
186                                         intval(local_user()),
187                                         dbesc($dfrn_url),
188                                         $parms['key'] // this was already escaped
189                                 );
190                                 if (dbm::is_result($r)) {
191                                         $def_gid = get_default_group(local_user(), $r[0]["network"]);
192                                         if(intval($def_gid))
193                                                 group_add_member(local_user(), '', $r[0]['id'], $def_gid);
194
195                                         if (isset($photo))
196                                                 update_contact_avatar($photo, local_user(), $r[0]["id"], true);
197
198                                         $forwardurl = App::get_baseurl()."/contacts/".$r[0]['id'];
199                                 } else {
200                                         $forwardurl = App::get_baseurl()."/contacts";
201                                 }
202
203                                 /*
204                                  * Allow the blocked remote notification to complete
205                                  */
206
207                                 if (is_array($contact_record)) {
208                                         $dfrn_request = $contact_record['request'];
209                                 }
210
211                                 if (strlen($dfrn_request) && strlen($confirm_key)) {
212                                         $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
213                                 }
214
215                                 // (ignore reply, nothing we can do it failed)
216
217                                 // Old: goaway(zrl($dfrn_url));
218                                 goaway($forwardurl);
219                                 return; // NOTREACHED
220
221                         }
222
223                 }
224
225                 // invalid/bogus request
226
227                 notice( t('Unrecoverable protocol error.') . EOL );
228                 goaway(z_root());
229                 return; // NOTREACHED
230         }
231
232         /*
233          * Otherwise:
234          *
235          * Scenario 1:
236          * We are the requestee. A person from a remote cell has made an introduction
237          * on our profile web page and clicked submit. We will use their DFRN-URL to
238          * figure out how to contact their cell.
239          *
240          * Scrape the originating DFRN-URL for everything we need. Create a contact record
241          * and an introduction to show our user next time he/she logs in.
242          * Finally redirect back to the requestor so that their site can record the request.
243          * If our user (the requestee) later confirms this request, a record of it will need
244          * to exist on the requestor's cell in order for the confirmation process to complete..
245          *
246          * It's possible that neither the requestor or the requestee are logged in at the moment,
247          * and the requestor does not yet have any credentials to the requestee profile.
248          *
249          * Who is the requestee? We've already loaded their profile which means their nickname should be
250          * in $a->argv[1] and we should have their complete info in $a->profile.
251          *
252          */
253
254         if(! (is_array($a->profile) && count($a->profile))) {
255                 notice( t('Profile unavailable.') . EOL);
256                 return;
257         }
258
259         $nickname       = $a->profile['nickname'];
260         $notify_flags   = $a->profile['notify-flags'];
261         $uid            = $a->profile['uid'];
262         $maxreq         = intval($a->profile['maxreq']);
263         $contact_record = null;
264         $failed         = false;
265         $parms          = null;
266         $blocked = 1;
267         $pending = 1;
268
269
270         if( x($_POST,'dfrn_url')) {
271
272                 /*
273                  * Block friend request spam
274                  */
275
276                 if($maxreq) {
277                         $r = q("SELECT * FROM `intro` WHERE `datetime` > '%s' AND `uid` = %d",
278                                 dbesc(datetime_convert('UTC','UTC','now - 24 hours')),
279                                 intval($uid)
280                         );
281                         if (dbm::is_result($r) && count($r) > $maxreq) {
282                                 notice( sprintf( t('%s has received too many connection requests today.'),  $a->profile['name']) . EOL);
283                                 notice( t('Spam protection measures have been invoked.') . EOL);
284                                 notice( t('Friends are advised to please try again in 24 hours.') . EOL);
285                                 return;
286                         }
287                 }
288
289                 /*
290                  *
291                  * Cleanup old introductions that remain blocked.
292                  * Also remove the contact record, but only if there is no existing relationship
293                  * Do not remove email contacts as these may be awaiting email verification
294                  */
295
296                 $r = q("SELECT `intro`.*, `intro`.`id` AS `iid`, `contact`.`id` AS `cid`, `contact`.`rel`
297                         FROM `intro` LEFT JOIN `contact` on `intro`.`contact-id` = `contact`.`id`
298                         WHERE `intro`.`blocked` = 1 AND `contact`.`self` = 0
299                         AND `contact`.`network` != '%s'
300                         AND `intro`.`datetime` < UTC_TIMESTAMP() - INTERVAL 30 MINUTE ",
301                         dbesc(NETWORK_MAIL2)
302                 );
303                 if (dbm::is_result($r)) {
304                         foreach ($r as $rr) {
305                                 if(! $rr['rel']) {
306                                         q("DELETE FROM `contact` WHERE `id` = %d",
307                                                 intval($rr['cid'])
308                                         );
309                                 }
310                                 q("DELETE FROM `intro` WHERE `id` = %d",
311                                         intval($rr['iid'])
312                                 );
313                         }
314                 }
315
316                 /*
317                  *
318                  * Cleanup any old email intros - which will have a greater lifetime
319                  */
320
321                 $r = q("SELECT `intro`.*, `intro`.`id` AS `iid`, `contact`.`id` AS `cid`, `contact`.`rel`
322                         FROM `intro` LEFT JOIN `contact` on `intro`.`contact-id` = `contact`.`id`
323                         WHERE `intro`.`blocked` = 1 AND `contact`.`self` = 0
324                         AND `contact`.`network` = '%s'
325                         AND `intro`.`datetime` < UTC_TIMESTAMP() - INTERVAL 3 DAY ",
326                         dbesc(NETWORK_MAIL2)
327                 );
328                 if (dbm::is_result($r)) {
329                         foreach ($r as $rr) {
330                                 if(! $rr['rel']) {
331                                         q("DELETE FROM `contact` WHERE `id` = %d",
332                                                 intval($rr['cid'])
333                                         );
334                                 }
335                                 q("DELETE FROM `intro` WHERE `id` = %d",
336                                         intval($rr['iid'])
337                                 );
338                         }
339                 }
340
341                 $email_follow = (x($_POST,'email_follow') ? intval($_POST['email_follow']) : 0);
342                 $real_name = (x($_POST,'realname') ? notags(trim($_POST['realname'])) : '');
343
344                 $url = trim($_POST['dfrn_url']);
345                 if(! strlen($url)) {
346                         notice( t("Invalid locator") . EOL );
347                         return;
348                 }
349
350                 $hcard = '';
351
352                 if($email_follow) {
353
354                         if(! validate_email($url)) {
355                                 notice( t('Invalid email address.') . EOL);
356                                 return;
357                         }
358
359                         $addr    = $url;
360                         $name    = ($realname) ? $realname : $addr;
361                         $nick    = substr($addr,0,strpos($addr,'@'));
362                         $url     = 'http://' . substr($addr,strpos($addr,'@') + 1);
363                         $nurl    = normalise_url($host);
364                         $poll    = 'email ' . random_string();
365                         $notify  = 'smtp ' . random_string();
366                         $network = NETWORK_MAIL2;
367                         $rel     = CONTACT_IS_FOLLOWER;
368
369                         $mail_disabled = ((function_exists('imap_open') && (! get_config('system','imap_disabled'))) ? 0 : 1);
370                         if(get_config('system','dfrn_only'))
371                                 $mail_disabled = 1;
372
373                         if(! $mail_disabled) {
374                                 $failed = false;
375                                 $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d LIMIT 1",
376                                         intval($uid)
377                                 );
378
379                                 if (! dbm::is_result($r)) {
380                                         notice( t('This account has not been configured for email. Request failed.') . EOL);
381                                         return;
382                                 }
383                         }
384
385                         $r = q("insert into contact ( uid, created, addr, name, nick, url, nurl, poll, notify, blocked, pending, network, rel )
386                                 values( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d ) ",
387                                 intval($uid),
388                                 dbesc(datetime_convert()),
389                                 dbesc($addr),
390                                 dbesc($name),
391                                 dbesc($nick),
392                                 dbesc($url),
393                                 dbesc($nurl),
394                                 dbesc($poll),
395                                 dbesc($notify),
396                                 intval($blocked),
397                                 intval($pending),
398                                 dbesc($network),
399                                 intval($rel)
400                         );
401
402                         $r = q("SELECT `id`, `network` FROM `contact` WHERE `poll` = '%s' AND `uid` = %d LIMIT 1",
403                                 dbesc($poll),
404                                 intval($uid)
405                         );
406                         if (dbm::is_result($r)) {
407                                 $contact_id = $r[0]['id'];
408
409                                 $def_gid = get_default_group($uid, $r[0]["network"]);
410                                 if (intval($def_gid))
411                                         group_add_member($uid, '', $contact_id, $def_gid);
412
413                                 $photo = avatar_img($addr);
414
415                                 $r = q("UPDATE `contact` SET
416                                         `photo` = '%s',
417                                         `thumb` = '%s',
418                                         `micro` = '%s',
419                                         `name-date` = '%s',
420                                         `uri-date` = '%s',
421                                         `avatar-date` = '%s',
422                                         `hidden` = 0,
423                                         WHERE `id` = %d
424                                 ",
425                                         dbesc($photos[0]),
426                                         dbesc($photos[1]),
427                                         dbesc($photos[2]),
428                                         dbesc(datetime_convert()),
429                                         dbesc(datetime_convert()),
430                                         dbesc(datetime_convert()),
431                                         intval($contact_id)
432                                 );
433                         }
434
435                         // contact is created. Now create an introduction
436
437                         $hash = random_string();
438
439                         $r = q("INSERT INTO `intro` ( `uid`, `contact-id`, knowyou, note, hash, datetime, blocked )
440                                 VALUES( %d , %d, %d, '%s', '%s', '%s', %d ) ",
441                                 intval($uid),
442                                 intval($contact_id),
443                                 ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
444                                 dbesc(notags(trim($_POST['dfrn-request-message']))),
445                                 dbesc($hash),
446                                 dbesc(datetime_convert()),
447                                 1
448                         );
449
450                         // Next send an email verify form to the requestor.
451
452                 } else {
453                         // Detect the network
454                         $data = probe_url($url);
455                         $network = $data["network"];
456
457                         // Canonicalise email-style profile locator
458                         $url = Probe::webfinger_dfrn($url,$hcard);
459
460                         if (substr($url,0,5) === 'stat:') {
461
462                                 // Every time we detect the remote subscription we define this as OStatus.
463                                 // We do this even if it is not OStatus.
464                                 // we only need to pass this through another section of the code.
465                                 if ($network != NETWORK_DIASPORA)
466                                         $network = NETWORK_OSTATUS;
467
468                                 $url = substr($url,5);
469                         } else
470                                 $network = NETWORK_DFRN;
471                 }
472
473                 logger('dfrn_request: url: ' . $url . ',network=' . $network, LOGGER_DEBUG);
474
475                 if($network === NETWORK_DFRN) {
476                         $ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `self` = 0 LIMIT 1",
477                                 intval($uid),
478                                 dbesc($url)
479                         );
480
481                         if (dbm::is_result($ret)) {
482                                 if(strlen($ret[0]['issued-id'])) {
483                                         notice( t('You have already introduced yourself here.') . EOL );
484                                         return;
485                                 }
486                                 elseif($ret[0]['rel'] == CONTACT_IS_FRIEND) {
487                                         notice( sprintf( t('Apparently you are already friends with %s.'), $a->profile['name']) . EOL);
488                                         return;
489                                 }
490                                 else {
491                                         $contact_record = $ret[0];
492                                         $parms = array('dfrn-request' => $ret[0]['request']);
493                                 }
494                         }
495
496                         $issued_id = random_string();
497
498                         if(is_array($contact_record)) {
499                                 // There is a contact record but no issued-id, so this
500                                 // is a reciprocal introduction from a known contact
501                                 $r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d",
502                                         dbesc($issued_id),
503                                         intval($contact_record['id'])
504                                 );
505                         }
506                         else {
507                                 if (! validate_url($url)) {
508                                         notice( t('Invalid profile URL.') . EOL);
509                                         goaway(App::get_baseurl() . '/' . $a->cmd);
510                                         return; // NOTREACHED
511                                 }
512
513                                 if (! allowed_url($url)) {
514                                         notice( t('Disallowed profile URL.') . EOL);
515                                         goaway(App::get_baseurl() . '/' . $a->cmd);
516                                         return; // NOTREACHED
517                                 }
518
519
520                                 require_once('include/Scrape.php');
521
522                                 $parms = Probe::profile(($hcard) ? $hcard : $url);
523
524                                 if (! count($parms)) {
525                                         notice( t('Profile location is not valid or does not contain profile information.') . EOL );
526                                         goaway(App::get_baseurl() . '/' . $a->cmd);
527                                 }
528                                 else {
529                                         if (! x($parms,'fn')) {
530                                                 notice( t('Warning: profile location has no identifiable owner name.') . EOL );
531                                         }
532                                         if (! x($parms,'photo')) {
533                                                 notice( t('Warning: profile location has no profile photo.') . EOL );
534                                         }
535                                         $invalid = Probe::valid_dfrn($parms);
536                                         if ($invalid) {
537                                                 notice( sprintf( tt("%d required parameter was not found at the given location",
538                                                                                         "%d required parameters were not found at the given location",
539                                                                                         $invalid), $invalid) . EOL );
540
541                                                 return;
542                                         }
543                                 }
544
545
546                                 $parms['url'] = $url;
547                                 $parms['issued-id'] = $issued_id;
548                                 $photo = $parms["photo"];
549
550                                 dbesc_array($parms);
551                                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `name`, `nick`, `issued-id`, `photo`, `site-pubkey`,
552                                         `request`, `confirm`, `notify`, `poll`, `poco`, `network`, `blocked`, `pending` )
553                                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d )",
554                                         intval($uid),
555                                         dbesc(datetime_convert()),
556                                         $parms['url'],
557                                         dbesc(normalise_link($url)),
558                                         $parms['addr'],
559                                         $parms['fn'],
560                                         $parms['nick'],
561                                         $parms['issued-id'],
562                                         $parms['photo'],
563                                         $parms['key'],
564                                         $parms['dfrn-request'],
565                                         $parms['dfrn-confirm'],
566                                         $parms['dfrn-notify'],
567                                         $parms['dfrn-poll'],
568                                         $parms['dfrn-poco'],
569                                         dbesc(NETWORK_DFRN),
570                                         intval($blocked),
571                                         intval($pending)
572                                 );
573
574                                 // find the contact record we just created
575                                 if ($r) {
576                                         $r = q("SELECT `id` FROM `contact`
577                                                 WHERE `uid` = %d AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
578                                                 intval($uid),
579                                                 $parms['url'],
580                                                 $parms['issued-id']
581                                         );
582                                         if (dbm::is_result($r)) {
583                                                 $contact_record = $r[0];
584                                                 update_contact_avatar($photo, $uid, $contact_record["id"], true);
585                                         }
586                                 }
587
588                         }
589                         if ($r === false) {
590                                 notice( t('Failed to update contact record.') . EOL );
591                                 return;
592                         }
593
594                         $hash = random_string() . (string) time();   // Generate a confirm_key
595
596                         if (is_array($contact_record)) {
597                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
598                                         VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
599                                         intval($uid),
600                                         intval($contact_record['id']),
601                                         ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
602                                         dbesc(notags(trim($_POST['dfrn-request-message']))),
603                                         dbesc($hash),
604                                         dbesc(datetime_convert())
605                                 );
606                         }
607
608                         // This notice will only be seen by the requestor if the requestor and requestee are on the same server.
609
610                         if (! $failed) {
611                                 info( t('Your introduction has been sent.') . EOL );
612                         }
613
614                         // "Homecoming" - send the requestor back to their site to record the introduction.
615
616                         $dfrn_url = bin2hex(App::get_baseurl() . '/profile/' . $nickname);
617                         $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
618
619                         goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url"
620                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
621                                 . '&confirm_key='  . $hash
622                                 . (($aes_allow) ? "&aes_allow=1" : "")
623                         );
624                         // NOTREACHED
625                         // END $network === NETWORK_DFRN
626                 } elseif (($network != NETWORK_PHANTOM) AND ($url != "")) {
627
628                         /*
629                          *
630                          * Substitute our user's feed URL into $url template
631                          * Send the subscriber home to subscribe
632                          *
633                          */
634
635                         // Diaspora needs the uri in the format user@domain.tld
636                         // Diaspora will support the remote subscription in a future version
637                         if ($network == NETWORK_DIASPORA) {
638                                 $uri = $nickname.'@'.$a->get_hostname();
639
640                                 if ($a->get_path())
641                                         $uri .= '/'.$a->get_path();
642
643                                 $uri = urlencode($uri);
644                         } else {
645                                 $uri = App::get_baseurl().'/profile/'.$nickname;
646                         }
647
648                         $url = str_replace('{uri}', $uri, $url);
649                         goaway($url);
650                         // NOTREACHED
651                         // END $network != NETWORK_PHANTOM
652                 } else {
653                         notice(t("Remote subscription can't be done for your network. Please subscribe directly on your system.").EOL);
654                         return;
655                 }
656
657         }       return;
658 }
659
660
661 function dfrn_request_content(App &$a) {
662
663         if (($a->argc != 2) || (! count($a->profile))) {
664                 return "";
665         }
666
667
668         // "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
669         // to send us to the post section to record the introduction.
670
671         if (x($_GET,'dfrn_url')) {
672
673                 if (! local_user()) {
674                         info( t("Please login to confirm introduction.") . EOL );
675                         /* setup the return URL to come back to this page if they use openid */
676                         $_SESSION['return_url'] = $a->query_string;
677                         return login();
678                 }
679
680                 // Edge case, but can easily happen in the wild. This person is authenticated,
681                 // but not as the person who needs to deal with this request.
682
683                 if ($a->user['nickname'] != $a->argv[1]) {
684                         notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
685                         return login();
686                 }
687
688                 $dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
689                 $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
690                 $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
691
692                 // Checking fastlane for validity
693                 if (x($_SESSION, "fastlane") AND (normalise_link($_SESSION["fastlane"]) == normalise_link($dfrn_url))) {
694                         $_POST["dfrn_url"] = $dfrn_url;
695                         $_POST["confirm_key"] = $confirm_key;
696                         $_POST["localconfirm"] = 1;
697                         $_POST["hidden-contact"] = 0;
698                         $_POST["submit"] = t('Confirm');
699
700                         dfrn_request_post($a);
701
702                         killme();
703                         return; // NOTREACHED
704                 }
705
706                 $tpl = get_markup_template("dfrn_req_confirm.tpl");
707                 $o  = replace_macros($tpl,array(
708                         '$dfrn_url' => $dfrn_url,
709                         '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
710                         '$hidethem' => t('Hide this contact'),
711                         '$hidechecked' => '',
712                         '$confirm_key' => $confirm_key,
713                         '$welcome' => sprintf( t('Welcome home %s.'), $a->user['username']),
714                         '$please' => sprintf( t('Please confirm your introduction/connection request to %s.'), $dfrn_url),
715                         '$submit' => t('Confirm'),
716                         '$uid' => $_SESSION['uid'],
717                         '$nickname' => $a->user['nickname'],
718                         'dfrn_rawurl' => $_GET['dfrn_url']
719                         ));
720                 return $o;
721
722         }
723         elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
724
725                 // we are the requestee and it is now safe to send our user their introduction,
726                 // We could just unblock it, but first we have to jump through a few hoops to
727                 // send an email, or even to find out if we need to send an email.
728
729                 $intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
730                         dbesc($_GET['confirm_key'])
731                 );
732
733                 if (dbm::is_result($intro)) {
734
735                         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
736                                 WHERE `contact`.`id` = %d LIMIT 1",
737                                 intval($intro[0]['contact-id'])
738                         );
739
740                         $auto_confirm = false;
741
742                         if (dbm::is_result($r)) {
743                                 if(($r[0]['page-flags'] != PAGE_NORMAL) && ($r[0]['page-flags'] != PAGE_PRVGROUP))
744                                         $auto_confirm = true;
745
746                                 if(! $auto_confirm) {
747
748                                         notification(array(
749                                                 'type'         => NOTIFY_INTRO,
750                                                 'notify_flags' => $r[0]['notify-flags'],
751                                                 'language'     => $r[0]['language'],
752                                                 'to_name'      => $r[0]['username'],
753                                                 'to_email'     => $r[0]['email'],
754                                                 'uid'          => $r[0]['uid'],
755                                                 'link'         => App::get_baseurl() . '/notifications/intros',
756                                                 'source_name'  => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
757                                                 'source_link'  => $r[0]['url'],
758                                                 'source_photo' => $r[0]['photo'],
759                                                 'verb'         => ACTIVITY_REQ_FRIEND,
760                                                 'otype'        => 'intro'
761                                         ));
762                                 }
763
764                                 if($auto_confirm) {
765                                         require_once('mod/dfrn_confirm.php');
766                                         $handsfree = array(
767                                                 'uid'      => $r[0]['uid'],
768                                                 'node'     => $r[0]['nickname'],
769                                                 'dfrn_id'  => $r[0]['issued-id'],
770                                                 'intro_id' => $intro[0]['id'],
771                                                 'duplex'   => (($r[0]['page-flags'] == PAGE_FREELOVE) ? 1 : 0),
772                                                 'activity' => intval(get_pconfig($r[0]['uid'],'system','post_newfriend'))
773                                         );
774                                         dfrn_confirm_post($a,$handsfree);
775                                 }
776
777                         }
778
779                         if(! $auto_confirm) {
780
781                                 // If we are auto_confirming, this record will have already been nuked
782                                 // in dfrn_confirm_post()
783
784                                 $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s'",
785                                         dbesc($_GET['confirm_key'])
786                                 );
787                         }
788                 }
789
790                 killme();
791                 return; // NOTREACHED
792         }
793         else {
794
795                 /*
796                  * Normal web request. Display our user's introduction form.
797                  */
798
799                 if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
800                         if(! get_config('system','local_block')) {
801                                 notice( t('Public access denied.') . EOL);
802                                 return;
803                         }
804                 }
805
806
807                 /*
808                  * Try to auto-fill the profile address
809                  */
810
811                 // At first look if an address was provided
812                 // Otherwise take the local address
813                 if (x($_GET,'addr') AND ($_GET['addr'] != ""))
814                         $myaddr = hex2bin($_GET['addr']);
815                 elseif (x($_GET,'address') AND ($_GET['address'] != ""))
816                         $myaddr = $_GET['address'];
817                 elseif (local_user()) {
818                         if (strlen($a->path)) {
819                                 $myaddr = App::get_baseurl() . '/profile/' . $a->user['nickname'];
820                         }
821                         else {
822                                 $myaddr = $a->user['nickname'] . '@' . substr(z_root(), strpos(z_root(),'://') + 3 );
823                         }
824                 }
825                 else {
826                         // last, try a zrl
827                         $myaddr = get_my_url();
828                 }
829
830                 $target_addr = $a->profile['nickname'] . '@' . substr(z_root(), strpos(z_root(),'://') + 3 );
831
832
833                 /*
834                  *
835                  * The auto_request form only has the profile address
836                  * because nobody is going to read the comments and
837                  * it doesn't matter if they know you or not.
838                  *
839                  */
840
841                 if ($a->profile['page-flags'] == PAGE_NORMAL) {
842                         $tpl = get_markup_template('dfrn_request.tpl');
843                 }
844                 else {
845                         $tpl = get_markup_template('auto_request.tpl');
846                 }
847
848                 $page_desc = t("Please enter your 'Identity Address' from one of the following supported communications networks:");
849
850                 // see if we are allowed to have NETWORK_MAIL2 contacts
851
852                 $mail_disabled = ((function_exists('imap_open') && (! get_config('system','imap_disabled'))) ? 0 : 1);
853                 if(get_config('system','dfrn_only'))
854                         $mail_disabled = 1;
855
856                 if(! $mail_disabled) {
857                         $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d LIMIT 1",
858                                 intval($a->profile['uid'])
859                         );
860                         if (! dbm::is_result($r)) {
861                                 $mail_disabled = 1;
862                         }
863                 }
864
865                 // "coming soon" is disabled for now
866                 //$emailnet = (($mail_disabled) ? '' : t("<strike>Connect as an email follower</strike> \x28Coming soon\x29"));
867                 $emailnet = "";
868
869                 $invite_desc = sprintf(
870                         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>.'),
871                         get_server()
872                 );
873
874                 $o = replace_macros($tpl,array(
875                         '$header' => t('Friend/Connection Request'),
876                         '$desc' => t('Examples: jojo@demo.friendica.com, http://demo.friendica.com/profile/jojo, testuser@identi.ca'),
877                         '$pls_answer' => t('Please answer the following:'),
878                         '$does_know_you' => array('knowyou', sprintf(t('Does %s know you?'),$a->profile['name']), false, '', array(t('No'),t('Yes'))),
879                         /*'$does_know' => sprintf( t('Does %s know you?'),$a->profile['name']),
880                         '$yes' => t('Yes'),
881                         '$no' => t('No'), */
882                         '$add_note' => t('Add a personal note:'),
883                         '$page_desc' => $page_desc,
884                         '$friendica' => t('Friendica'),
885                         '$statusnet' => t('StatusNet/Federated Social Web'),
886                         '$diaspora' => t('Diaspora'),
887                         '$diasnote' => sprintf (t(' - please do not use this form.  Instead, enter %s into your Diaspora search bar.'),$target_addr),
888                         '$your_address' => t('Your Identity Address:'),
889                         '$invite_desc' => $invite_desc,
890                         '$emailnet' => $emailnet,
891                         '$submit' => t('Submit Request'),
892                         '$cancel' => t('Cancel'),
893                         '$nickname' => $a->argv[1],
894                         '$name' => $a->profile['name'],
895                         '$myaddr' => $myaddr
896                 ));
897                 return $o;
898         }
899
900         return; // Somebody is fishing.
901 }