aboutsummaryrefslogtreecommitdiffstats
path: root/mod/dfrn_confirm.php
blob: e5a550cd9511c26969bcf60d2a75523c5c4ba7a7 (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
<?php



function dfrn_confirm_post(&$a) {
	
	if($a->argc > 1)
		$node = $a->argv[1];

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

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

		$public_key = $_POST['public_key'];
		$dfrn_id = $_POST['dfrn_id'];
		$source_url = $_POST['source_url'];
		$aes_key = $_POST['aes_key'];

		// Find our user's account

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

		if(! count($r)) {
			xml_status(3); // failure
		}

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

		$decrypted_source_url = "";

		// verify everything

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


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

		if(! count($ret)) {
			// this is either a bogus confirmation or we deleted the original introduction.
			xml_status(3); 
		}

		// 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),
			intval($local_uid));
		if(count($r))
			xml_status(1); // Birthday paradox - duplicate dfrn-id

		$r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
			dbesc($decrypted_dfrn_id),
			dbesc($dfrn_pubkey),
			intval($dfrn_record));
		if($r) {

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

			require_once("Photo.php");

			$photo_failure = false;

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

				$filename = basename($r[0]['photo']);
				$img_str = fetch_url($r[0]['photo'],true);
				$img = new Photo($img_str);
				if($img) {

					$img->scaleImageSquare(175);
					
					$hash = hash('md5',uniqid(mt_rand(),true));

					$r = q("INSERT INTO `photo` ( `uid`, `contact-id`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
                                		VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
						intval($local_uid),
						intval($dfrn_record),
                                		dbesc($hash),
                                		datetime_convert(),
                                		datetime_convert(),
                                		dbesc(basename($r[0]['photo'])),
						dbesc( t('Contact Photos') ),
                                		intval($img->getHeight()),
						intval($img->getWidth()),
						dbesc($img->imageString())
					);
					if($r === false)
						$photo_failure = true;
					
					$img->scaleImage(80);
					$r =  q("INSERT INTO `photo` ( `uid`, `contact-id`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
						VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
						intval($local_uid),
						intval($dfrn_record),
						dbesc($hash),
						datetime_convert(),
						datetime_convert(),
						dbesc(basename($r[0]['photo'])),
						dbesc( t('Contact Photos')),
						intval($img->getHeight()),
						intval($img->getWidth()),
						dbesc($img->imageString())
					);
					if($r === false)
						$photo_failure = true;

					$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
					$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';	
				}
				else
					$photo_failure = true;
			}
			else
				$photo_failure = true;

			if($photo_failure) {
				$photo = $a->get_baseurl() . '/images/default-profile.jpg';
				$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
			}

			$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
				dbesc($photo),
				dbesc($thumb),
				intval($dfrn_record)
			);
			if($r === false)
				notice( t("Unable to set contact photo info.") . EOL);

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

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

				$tpl = file_get_contents('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("Introduction accepted at ") . $a->config['sitename'],
					$email_tpl,t("From: Administrator@") . $_SERVER[SERVER_NAME] );
				if(!$res) {
					notice( t("Email notification failed.") . EOL );
				}
			}
			xml_status(0); // Success

			return; // NOTREACHED
		}
		else {
			xml_status(2);	// Hopefully temporary problem that can be retried.
		}
		return; // NOTREACHED

	////////////////////// End of this scenario ///////////////////////////////////////////////
	}
	else {

		// We are processing a local confirmation initiated on this system by our user to an external introduction.

		$uid = $_SESSION['uid'];

		if(! $uid) {
			notice(t("Permission denied.") . EOL );
			return;
		}	
	
		$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
		$intro_id = intval($_POST['intro_id']);

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

		if((! $r) || (! count($r))) {
			notice( t('Node does not exist.') . EOL );
			return;
		}

		$contact_id = $r[0]['id'];
		$site_pubkey = $r[0]['site-pubkey'];
		$dfrn_confirm = $r[0]['confirm'];
		$aes_allow = $r[0]['aes_allow'];

		$res=openssl_pkey_new(array(
        		'digest_alg' => 'whirlpool',
        		'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"];

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


		$params = array();

		$src_aes_key = random_string();
		$result = "";

		openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);

		$params['dfrn_id'] = $result;
		$params['public_key'] = $public_key;


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

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

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

// uncomment the following two lines and comment the following xml/status lines
// to debug the remote confirmation section (when both confirmations 
// and responses originate on this system)

// echo $res;
// $status = 0;

		$xml = simplexml_load_string($res);
		$status = (int) $xml->status;
		switch($status) {
			case 0:
				notice( t("Confirmation completed successfully") . 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);
				break;


			case 3:
				notice( t("Introduction failed or was revoked. Cannot complete.") . EOL);
				break;
		}

		if(($status == 0 || $status == 3) && ($intro_id)) {

			//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;
		

		require_once("Photo.php");

		$photo_failure = false;

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

			$filename = basename($r[0]['photo']);
			$img_str = fetch_url($r[0]['photo'],true);
			$img = new Photo($img_str);
			if($img) {

				$img->scaleImageSquare(175);
					
				$hash = hash('md5',uniqid(mt_rand(),true));

				$r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
                               		VALUES ( %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
					intval($local_uid),
					dbesc($hash),
					datetime_convert(),
					datetime_convert(),
					dbesc(basename($r[0]['photo'])),
					dbesc( t('Contact Photos') ),
					intval($img->getHeight()),
					intval($img->getWidth()),
					dbesc($img->imageString())
				);
				if($r === false)
					$photo_failure = true;
				$img->scaleImage(80);
				$r =  q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale` )
					VALUES ( %d, '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
					intval($local_uid),
					dbesc($hash),
					datetime_convert(),
					datetime_convert(),
					dbesc(basename($r[0]['photo'])),
					dbesc( t('Contact Photos') ),
					intval($img->getHeight()),
					intval($img->getWidth()),
					dbesc($img->imageString())
				);
				if($r === false)
					$photo_failure = true;

				$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
				$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
			}
			else
				$photo_failure = true;
		}
		else
			$photo_failure = true;

		if($photo_failure) {
			$photo = $a->get_baseurl() . '/images/default-profile.jpg';
			$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
		}

		$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
			dbesc($photo),
			dbesc($thumb),
			intval($contact_id)
		);
		if($r === false)
			notice( t('Unable to set contact photo.') . EOL);

		goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
		return;  //NOTREACHED

	}

	return;
}