aboutsummaryrefslogtreecommitdiffstats
path: root/mod/dfrn_confirm.php
blob: 41e0771afa6f5b2fe3269517775cdb4004604011 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
<?php

/*
 * Module: dfrn_confirm
 * Purpose: Friendship acceptance for DFRN contacts
 *
 * There are two possible entry points and three scenarios.
 *
 *   1. A form was submitted by our user approving a friendship that originated elsewhere.
 *      This may also be called from dfrn_request to automatically approve a friendship.
 *
 *   2. We may be the target or other side of the conversation to scenario 1, and will 
 *      interact with that process on our own user's behalf.
 *   
 */

function dfrn_confirm_post(&$a,$handsfree = null) {

	if(is_array($handsfree)) {

		/**
		 * We were called directly from dfrn_request due to automatic friend acceptance.
		 * Any $_POST parameters we may require are supplied in the $handsfree array.
		 *
		 */

		$node = $handsfree['node'];
		$a->interactive = false; // notice() becomes a no-op since nobody is there to see it

	}
	else {
		if($a->argc > 1)
			$node = $a->argv[1];
	}

		/**
		 *
		 * Main entry point. Scenario 1. Our user received a friend request notification (perhaps 
		 * from another site) and clicked 'Approve'. 
		 * $POST['source_url'] is not set. If it is, it indicates Scenario 2.
		 *
		 * We may also have been called directly from dfrn_request ($handsfree != null) due to 
		 * this being a page type which supports automatic friend acceptance. That is also Scenario 1
		 * since we are operating on behalf of our registered user to approve a friendship.
		 *
		 */

	if(! x($_POST,'source_url')) {

		$uid = ((is_array($handsfree)) ? $handsfree['uid'] : local_user());

		if(! $uid) {
			notice( t('Permission denied.') . EOL );
			return;
		}	

		$user = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
			intval($uid)
		);

		if(! $user) {
			notice( t('Profile not found.') . EOL );
			return;
		}	


		// These data elements may come from either the friend request notification form or $handsfree array.

		if(is_array($handsfree)) {
			logger('dfrn_confirm: Confirm in handsfree mode');
			$dfrn_id   = $handsfree['dfrn_id'];
			$intro_id  = $handsfree['intro_id'];
			$duplex    = $handsfree['duplex'];
		}
		else {
			$dfrn_id  = ((x($_POST,'dfrn_id'))    ? notags(trim($_POST['dfrn_id'])) : "");
			$intro_id = ((x($_POST,'intro_id'))   ? intval($_POST['intro_id'])      : 0 );
			$duplex   = ((x($_POST,'duplex'))     ? intval($_POST['duplex'])        : 0 );
			$cid      = ((x($_POST,'contact_id')) ? intval($_POST['contact_id'])    : 0 );
		}

		/**
		 *
		 * Ensure that dfrn_id has precedence when we go to find the contact record.
		 * We only want to search based on contact id if there is no dfrn_id, 
		 * e.g. for OStatus network followers.
		 *
		 */

		if(strlen($dfrn_id))
			$cid = 0;

		logger('dfrn_confirm: Confirming request for dfrn_id (issued) ' . $dfrn_id);
		if($cid)
			logger('dfrn_confirm: Confirming follower with contact_id: ' . $cid);


		/**
		 *
		 * The other person will have been issued an ID when they first requested friendship.
		 * Locate their record. At this time, their record will have both pending and blocked set to 1. 
		 * There won't be any dfrn_id if this is a network follower, so use the contact_id instead.
		 *
		 */

		$r = q("SELECT * FROM `contact` WHERE ( ( `issued-id` != '' AND `issued-id` = '%s' ) OR ( `id` = %d AND `id` != 0 ) ) AND `uid` = %d LIMIT 1",
			dbesc($dfrn_id),
			intval($cid),
			intval($uid)
		);

		if(! count($r)) {
			logger('dfrn_confirm: Contact not found in DB.'); 
			notice( t('Contact not found.') . EOL );
			return;
		}

		$contact = $r[0];

		$contact_id   = $contact['id'];
		$relation     = $contact['rel'];
		$site_pubkey  = $contact['site-pubkey'];
		$dfrn_confirm = $contact['confirm'];
		$aes_allow    = $contact['aes_allow'];

		$network = ((strlen($contact['issued-id'])) ? 'dfrn' : 'stat');

		if($network === 'dfrn') {

			/**
			 *
			 * Generate a key pair for all further communications with this person.
			 * We have a keypair for every contact, and a site key for unknown people.
			 * This provides a means to carry on relationships with other people if 
			 * any single key is compromised. It is a robust key. We're much more 
			 * worried about key leakage than anybody cracking it.  
			 *
			 */

			$res = openssl_pkey_new(array(
				'digest_alg' => 'sha1',
				'private_key_bits' => 4096,
				'encrypt_key' => false )
			);

			$private_key = '';

			openssl_pkey_export($res, $private_key);

			$pubkey = openssl_pkey_get_details($res);
			$public_key = $pubkey["key"];

			// Save the private key. Send them the public key.

			$r = q("UPDATE `contact` SET `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
				dbesc($private_key),
				intval($contact_id),
				intval($uid) 
			);

			$params = array();

			/**
			 *
			 * Per the DFRN protocol, we will verify both ends by encrypting the dfrn_id with our 
			 * site private key (person on the other end can decrypt it with our site public key).
			 * Then encrypt our profile URL with the other person's site public key. They can decrypt
			 * it with their site private key. If the decryption on the other end fails for either
			 * item, it indicates tampering or key failure on at least one site and we will not be 
			 * able to provide a secure communication pathway.
			 *
			 * If other site is willing to accept full encryption, (aes_allow is 1 AND we have php5.3 
			 * or later) then we encrypt the personal public key we send them using AES-256-CBC and a 
			 * random key which is encrypted with their site public key.  
			 *
			 */

			$src_aes_key = random_string();

			$result = '';
			openssl_private_encrypt($dfrn_id,$result,$user[0]['prvkey']);

			$params['dfrn_id'] = bin2hex($result);
			$params['public_key'] = $public_key;


			$my_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];

			openssl_public_encrypt($my_url, $params['source_url'], $site_pubkey);
			$params['source_url'] = bin2hex($params['source_url']);

			if($aes_allow && function_exists('openssl_encrypt')) {
				openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
				$params['aes_key'] = bin2hex($params['aes_key']);
				$params['public_key'] = bin2hex(openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key));
			}

			$params['dfrn_version'] = DFRN_PROTOCOL_VERSION ;
			if($duplex == 1)
				$params['duplex'] = 1;

			logger('dfrn_confirm: Confirm: posting data to ' . $dfrn_confirm . ': ' . print_r($params,true), LOGGER_DATA);

			/**
			 *
			 * POST all this stuff to the other site.
			 * Temporarily raise the network timeout to 120 seconds because the default 60
			 * doesn't always give the other side quite enough time to decrypt everything.
			 *
			 */

			$a->config['system']['curl_timeout'] = 120;

			$res = post_url($dfrn_confirm,$params);

			logger('dfrn_confirm: Confirm: received data: ' . $res, LOGGER_DATA);

			// Now figure out what they responded. Try to be robust if the remote site is 
			// having difficulty and throwing up errors of some kind. 

			$leading_junk = substr($res,0,strpos($res,'<?xml'));

			$res = substr($res,strpos($res,'<?xml'));
			if(! strlen($res)) {

					// No XML at all, this exchange is messed up really bad.
					// We shouldn't proceed, because the xml parser might choke,
					// and $status is going to be zero, which indicates success.
					// We can hardly call this a success.  
	
				notice( t('Response from remote site was not understood.') . EOL);
				return;
			}

			if(strlen($leading_junk) && get_config('system','debugging')) {
	
					// This might be more common. Mixed error text and some XML.
					// If we're configured for debugging, show the text. Proceed in either case.

				notice( t('Unexpected response from remote site: ') . EOL . $leading_junk . EOL );
			}

			$xml = simplexml_load_string($res);
			$status = (int) $xml->status;
			$message = unxmlify($xml->message);   // human readable text of what may have gone wrong.
			switch($status) {
				case 0:
					notice( t("Confirmation completed successfully.") . EOL);
					if(strlen($message))
						notice( t('Remote site reported: ') . $message . EOL);
					break;
				case 1:
					// birthday paradox - generate new dfrn-id and fall through.
					$new_dfrn_id = random_string();
					$r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
						dbesc($new_dfrn_id),
						intval($contact_id),
						intval($uid) 
					);

				case 2:
					notice( t("Temporary failure. Please wait and try again.") . EOL);
					if(strlen($message))
						notice( t('Remote site reported: ') . $message . EOL);
					break;


				case 3:
					notice( t("Introduction failed or was revoked.") . EOL);
					if(strlen($message))
						notice( t('Remote site reported: ') . $message . EOL);
					break;
				}

			if(($status == 0) && ($intro_id)) {
	
				// Success. Delete the notification.
	
				$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
					intval($intro_id),
					intval($uid)
				);
				
			}

			if($status != 0) 
				return;
		}


		/*
		 *
		 * We have now established a relationship with the other site.
		 * Let's make our own personal copy of their profile photo so we don't have
		 * to always load it from their site.
		 *
		 * We will also update the contact record with the nature and scope of the relationship.
		 *
		 */

		require_once("Photo.php");

		$photos = import_profile_photo($contact['photo'],$uid,$contact_id);
		
		logger('dfrn_confirm: confirm - imported photos');

		if($network === 'dfrn') {

			$new_relation = REL_VIP;
			if(($relation == REL_FAN) || ($duplex))
				$new_relation = REL_BUD;

			if(($relation == REL_FAN) && ($duplex))
				$duplex = 0;

			$r = q("UPDATE `contact` SET `photo` = '%s', 
				`thumb` = '%s',
				`micro` = '%s', 
				`rel` = %d, 
				`name-date` = '%s', 
				`uri-date` = '%s', 
				`avatar-date` = '%s', 
				`blocked` = 0, 
				`pending` = 0,
				`duplex` = %d,
				`network` = 'dfrn' WHERE `id` = %d LIMIT 1
			",
				dbesc($photos[0]),
				dbesc($photos[1]),
				dbesc($photos[2]),
				intval($new_relation),
				dbesc(datetime_convert()),
				dbesc(datetime_convert()),
				dbesc(datetime_convert()),
				intval($duplex),
				intval($contact_id)
			);
		}
		else {  
			// $network !== 'dfrn'

			$notify = '';
			$poll   = '';

			$arr = lrdd($contact['url']);
			if(count($arr)) {
				foreach($arr as $link) {
					if($link['@attributes']['rel'] === 'salmon')
						$notify = $link['@attributes']['href'];
					if($link['@attributes']['rel'] === NAMESPACE_FEED)
						$poll = $link['@attributes']['href'];
				}
			}

			$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
				intval($intro_id),
				intval($uid)
			);


			$r = q("UPDATE `contact` SET `photo` = '%s', 
				`thumb` = '%s',
				`micro` = '%s', 
				`name-date` = '%s', 
				`uri-date` = '%s', 
				`avatar-date` = '%s', 
				`notify` = '%s',
				`poll` = '%s',
				`blocked` = 0, 
				`pending` = 0,
				`network` = 'stat'
				WHERE `id` = %d LIMIT 1
			",
				dbesc($photos[0]),
				dbesc($photos[1]),
				dbesc($photos[2]),
				dbesc(datetime_convert()),
				dbesc(datetime_convert()),
				dbesc(datetime_convert()),
				dbesc($notify),
				dbesc($poll),
				intval($contact_id)
			);			
		}

		if($r === false)
				notice( t('Unable to set contact photo.') . EOL);

		// reload contact info

		$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
			intval($contact_id)
		);
		if(count($r))
			$contact = $r[0];
		else
			$contact = null;

		// Send a new friend post if we are allowed to...

		$r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
			intval($uid)
		);
		if((count($r)) && ($r[0]['hide-friends'] == 0) && (is_array($contact)) &&  isset($new_relation) && ($new_relation == REL_BUD)) {

			require_once('include/items.php');

			$self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
				intval($uid)
			);

			if(count($self)) {

				$arr = array();
				$arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $uid); 
				$arr['uid'] = $uid;
				$arr['contact-id'] = $self[0]['id'];
				$arr['wall'] = 1;
				$arr['type'] = 'wall';
				$arr['gravity'] = 0;
				$arr['author-name'] = $arr['owner-name'] = $self[0]['name'];
				$arr['author-link'] = $arr['owner-link'] = $self[0]['url'];
				$arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb'];
				$arr['verb'] = ACTIVITY_FRIEND;
				$arr['object-type'] = ACTIVITY_OBJ_PERSON;
				$arr['body'] = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url] ' . t('is now friends with')
					. ' [url=' . $contact['url'] . ']' . $contact['name'] . '[/url]' . "\n\n\n" 
					. ' [url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]';

				$arr['object'] = '<object><type>' . ACTIVITY_OBJ_PERSON . '</type><title>' . $contact['name'] . '</title>'
					. '<id>' . $contact['url'] . '/' . $contact['name'] . '</id>';
				$arr['object'] .= '<link>' . xmlify('<link rel="alternate" type="text/html" href="' . $contact['url'] . '" />' . "\n");
				$arr['object'] .= xmlify('<link rel="photo" type="image/jpeg" href="' . $contact['thumb'] . '" />' . "\n");
				$arr['object'] .= '</link></object>' . "\n";
				$arr['last-child'] = 1;

				$i = item_store($arr);

				$php_path = ((strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');

			    proc_close(proc_open("\"$php_path\" \"include/notifier.php\" \"activity\" \"$i\" &",
        		array(),$foo));

			}

		}
		// Let's send our user to the contact editor in case they want to
		// do anything special with this new friend.

		if($handsfree === null)
			goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
		else
			return;  
		//NOTREACHED
	}

	/**
	 *
	 *
	 * End of Scenario 1. [Local confirmation of remote friend request].
	 *
	 * Begin Scenario 2. This is the remote response to the above scenario.
	 * This will take place on the site that originally initiated the friend request.
	 * In the section above where the confirming party makes a POST and 
	 * retrieves xml status information, they are communicating with the following code.
	 *
	 */

	if(x($_POST,'source_url')) {

		// We are processing an external confirmation to an introduction created by our user.

		$public_key = ((x($_POST,'public_key'))   ? $_POST['public_key']           : '');
		$dfrn_id    = ((x($_POST,'dfrn_id'))      ? hex2bin($_POST['dfrn_id'])     : '');
		$source_url = ((x($_POST,'source_url'))   ? hex2bin($_POST['source_url'])  : '');
		$aes_key    = ((x($_POST,'aes_key'))      ? $_POST['aes_key']              : '');
		$duplex     = ((x($_POST,'duplex'))       ? intval($_POST['duplex'])       : 0 );
		$version_id = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
	
		logger('dfrn_confirm: requestee contacted: ' . $node);

		logger('dfrn_confirm: request: POST=' . print_r($_POST,true), LOGGER_DATA);

		// If $aes_key is set, both of these items require unpacking from the hex transport encoding.

		if(x($aes_key)) {
			$aes_key = hex2bin($aes_key);
			$public_key = hex2bin($public_key);
		}

		// Find our user's account

		$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
			dbesc($node));

		if(! count($r)) {
			$message = t('No user record found for ') . '\'' . $node . '\'';
			xml_status(3,$message); // failure
			// NOTREACHED
		}

		$my_prvkey = $r[0]['prvkey'];
		$local_uid = $r[0]['uid'];


		if(! strstr($my_prvkey,'BEGIN RSA PRIVATE KEY')) {
			$message = t('Our site encryption key is apparently messed up.');
			xml_status(3,$message);
		}

		// verify everything

		$decrypted_source_url = "";
		openssl_private_decrypt($source_url,$decrypted_source_url,$my_prvkey);


		if(! strlen($decrypted_source_url)) {
			$message = t('Empty site URL was provided or URL could not be decrypted by us.');
			xml_status(3,$message);
			// NOTREACHED
		}

		$ret = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
			dbesc($decrypted_source_url),
			intval($local_uid)
		);

		if(! count($ret)) {
			// this is either a bogus confirmation (?) or we deleted the original introduction.
			$message = t('Contact record was not found for you on our site.');
			xml_status(3,$message);
			return; // NOTREACHED 
		}

		$relation = $ret[0]['rel'];

		// Decrypt all this stuff we just received

		$foreign_pubkey = $ret[0]['site-pubkey'];
		$dfrn_record    = $ret[0]['id'];

		$decrypted_dfrn_id = "";
		openssl_public_decrypt($dfrn_id,$decrypted_dfrn_id,$foreign_pubkey);

		if(strlen($aes_key)) {
			$decrypted_aes_key = "";
			openssl_private_decrypt($aes_key,$decrypted_aes_key,$my_prvkey);
			$dfrn_pubkey = openssl_decrypt($public_key,'AES-256-CBC',$decrypted_aes_key);
		}
		else {
			$dfrn_pubkey = $public_key;
		}

		$r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
			dbesc($decrypted_dfrn_id)
		);
		if(count($r)) {
			$message = t('The ID provided by your system is a duplicate on our system. It should work if you try again.');
			xml_status(1,$message); // Birthday paradox - duplicate dfrn-id
			// NOTREACHED
		}

		$r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
			dbesc($decrypted_dfrn_id),
			dbesc($dfrn_pubkey),
			intval($dfrn_record)
		);
		if(! count($r)) {
			$message = t('Unable to set your contact credentials on our system.');
			xml_status(3,$message);
		}

		// We're good but now we have to scrape the profile photo and send notifications.



		$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
			intval($dfrn_record));

		if(count($r))
			$photo = $r[0]['photo'];
		else
			$photo = $a->get_baseurl() . '/images/default-profile.jpg';
				
		require_once("Photo.php");

		$photos = import_profile_photo($photo,$local_uid,$dfrn_record);

		logger('dfrn_confirm: request - photos imported');

		$new_relation = REL_FAN;
		if(($relation == REL_VIP) || ($duplex))
			$new_relation = REL_BUD;

		if(($relation == REL_VIP) && ($duplex))
			$duplex = 0;

		$r = q("UPDATE `contact` SET 
			`photo` = '%s', 
			`thumb` = '%s', 
			`micro` = '%s',
			`rel` = %d, 
			`name-date` = '%s', 
			`uri-date` = '%s', 
			`avatar-date` = '%s', 
			`blocked` = 0, 
			`pending` = 0,
			`duplex` = %d, 
			`network` = 'dfrn' WHERE `id` = %d LIMIT 1
		",
			dbesc($photos[0]),
			dbesc($photos[1]),
			dbesc($photos[2]),
			intval($new_relation),
			dbesc(datetime_convert()),
			dbesc(datetime_convert()),
			dbesc(datetime_convert()),
			intval($duplex),
			intval($dfrn_record)
		);
		if($r === false) {    // indicates schema is messed up or total db failure
			$message = t('Unable to update your contact profile details on our system');
			xml_status(3,$message);
		}

		// Otherwise everything seems to have worked and we are almost done. Yay!
		// Send an email notification

		logger('dfrn_confirm: request: info updated');

		$r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
			WHERE `contact`.`id` = %d LIMIT 1",
			intval($dfrn_record)
		);
		if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {

			$tpl = (($new_relation == REL_BUD) 
				? load_view_file('view/friend_complete_eml.tpl')
				: load_view_file('view/intro_complete_eml.tpl'));
		
			$email_tpl = replace_macros($tpl, array(
				'$sitename' => $a->config['sitename'],
				'$siteurl' =>  $a->get_baseurl(),
				'$username' => $r[0]['username'],
				'$email' => $r[0]['email'],
				'$fn' => $r[0]['name'],
				'$dfrn_url' => $r[0]['url'],
				'$uid' => $newuid )
			);
	
			$res = mail($r[0]['email'], t("Connection accepted at ") . $a->config['sitename'],
				$email_tpl, 'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
			if(!$res) {
				// pointless throwing an error here and confusing the person at the other end of the wire.
			}
		}
		xml_status(0); // Success
		return; // NOTREACHED

			////////////////////// End of this scenario ///////////////////////////////////////////////
	}

	// somebody arrived here by mistake or they are fishing. Send them to the homepage.

	goaway($a->get_baseurl());
	// NOTREACHED

}