acctfuncs.inc.php 35.6 KB
Newer Older
1
<?php
2

3
4
5
6
7
8
9
/**
 * Determine if an HTTP request variable is set
 *
 * @param string $name The request variable to test for
 *
 * @return string Return the value of the request variable, otherwise blank
 */
Dan McGee's avatar
Dan McGee committed
10
11
12
13
14
15
16
function in_request($name) {
	if (isset($_REQUEST[$name])) {
		return $_REQUEST[$name];
	}
	return "";
}

17
18
19
20
21
22
23
/**
 * Format the PGP key fingerprint
 *
 * @param string $fingerprint An unformatted PGP key fingerprint
 *
 * @return string PGP fingerprint with spaces every 4 characters
 */
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
function html_format_pgp_fingerprint($fingerprint) {
	if (strlen($fingerprint) != 40 || !ctype_xdigit($fingerprint)) {
		return $fingerprint;
	}

	return htmlspecialchars(substr($fingerprint, 0, 4) . " " .
		substr($fingerprint, 4, 4) . " " .
		substr($fingerprint, 8, 4) . " " .
		substr($fingerprint, 12, 4) . " " .
		substr($fingerprint, 16, 4) . "  " .
		substr($fingerprint, 20, 4) . " " .
		substr($fingerprint, 24, 4) . " " .
		substr($fingerprint, 28, 4) . " " .
		substr($fingerprint, 32, 4) . " " .
		substr($fingerprint, 36, 4) . " ", ENT_QUOTES);
}

41
42
43
44
45
46
47
48
49
/**
 * Loads the account editing form, with any values that are already saved
 *
 * @global array $SUPPORTED_LANGS Languages that are supported by the AUR
 * @param string $A Form to use, either UpdateAccount or NewAccount
 * @param string $U The username to display
 * @param string $T The account type of the displayed user
 * @param string $S Whether the displayed user has a suspended account
 * @param string $E The e-mail address of the displayed user
50
 * @param string $H Whether the e-mail address of the displayed user is hidden
51
52
53
54
55
56
 * @param string $P The password value of the displayed user
 * @param string $C The confirmed password value of the displayed user
 * @param string $R The real name of the displayed user
 * @param string $L The language preference of the displayed user
 * @param string $I The IRC nickname of the displayed user
 * @param string $K The PGP key fingerprint of the displayed user
57
 * @param string $PK The list of SSH public keys
58
 * @param string $J The inactivity status of the displayed user
59
 * @param string $CN Whether to notify of new comments
60
 * @param string $UN Whether to notify of package updates
61
 * @param string $ON Whether to notify of ownership changes
62
 * @param string $UID The user ID of the displayed user
63
 * @param string $N The username as present in the database
64
65
66
 *
 * @return void
 */
67
function display_account_form($A,$U="",$T="",$S="",$E="",$H="",$P="",$C="",$R="",
68
		$L="",$I="",$K="",$PK="",$J="",$CN="",$UN="",$ON="",$UID=0,$N="") {
69
70
	global $SUPPORTED_LANGS;

71
	include("account_edit_form.php");
72
	return;
73
}
74

75
76
77
78
79
80
81
82
83
84
/**
 * Process information given to new/edit account form
 *
 * @global array $SUPPORTED_LANGS Languages that are supported by the AUR
 * @param string $TYPE Either "edit" for editing or "new" for registering an account
 * @param string $A Form to use, either UpdateAccount or NewAccount
 * @param string $U The username for the account
 * @param string $T The account type for the user
 * @param string $S Whether or not the account is suspended
 * @param string $E The e-mail address for the user
85
 * @param string $H Whether or not the e-mail address should be hidden
86
87
88
89
90
91
 * @param string $P The password for the user
 * @param string $C The confirmed password for the user
 * @param string $R The real name of the user
 * @param string $L The language preference of the user
 * @param string $I The IRC nickname of the user
 * @param string $K The PGP fingerprint of the user
92
 * @param string $PK The list of public SSH keys
93
 * @param string $J The inactivity status of the user
94
 * @param string $CN Whether to notify of new comments
95
 * @param string $UN Whether to notify of package updates
96
 * @param string $ON Whether to notify of ownership changes
97
 * @param string $UID The user ID of the modified account
98
 * @param string $N The username as present in the database
99
 *
100
 * @return array Boolean indicating success and message to be printed
101
 */
102
function process_account_form($TYPE,$A,$U="",$T="",$S="",$E="",$H="",$P="",$C="",
103
		$R="",$L="",$I="",$K="",$PK="",$J="",$CN="",$UN="",$ON="",$UID=0,$N="") {
104
	global $SUPPORTED_LANGS;
105

106
	$error = '';
107
	$message = '';
108
109
110
111
112
113
114
115

	if (is_ipbanned()) {
		$error = __('Account registration has been disabled ' .
					'for your IP address, probably due ' .
					'to sustained spam attacks. Sorry for the ' .
					'inconvenience.');
	}

116
	$dbh = DB::connect();
117

118
	if(isset($_COOKIE['AURSID'])) {
119
		$editor_user = uid_from_sid($_COOKIE['AURSID']);
120
121
	}
	else {
122
		$editor_user = null;
123
	}
124
125

	if (empty($E) || empty($U)) {
126
127
		$error = __("Missing a required field.");
	}
128

129
130
	if ($TYPE != "new" && !$UID) {
		$error = __("Missing User ID");
131
	}
132

133
	if (!$error && !valid_username($U)) {
134
135
136
		$length_min = config_get_int('options', 'username_min_len');
		$length_max = config_get_int('options', 'username_max_len');

137
		$error = __("The username is invalid.") . "<ul>\n"
138
			. "<li>" . __("It must be between %s and %s characters long", $length_min, $length_max)
139
			. "</li>"
140
			. "<li>" . __("Start and end with a letter or number") . "</li>"
141
			. "<li>" . __("Can contain only one period, underscore or hyphen.")
142
			. "</li>\n</ul>";
143
	}
144

145
146
147
	if (!$error && $P && $C && ($P != $C)) {
		$error = __("Password fields do not match.");
	}
148
149
150
151
152
	if (!$error && $P != '' && !good_passwd($P)) {
		$length_min = config_get_int('options', 'passwd_min_len');
		$error = __("Your password must be at least %s characters.",
			$length_min);
	}
153

154
155
156
	if (!$error && !valid_email($E)) {
		$error = __("The email address is invalid.");
	}
157
158
159
160
161

	if (!$error && $K != '' && !valid_pgp_fingerprint($K)) {
		$error = __("The PGP key fingerprint is invalid.");
	}

162
	if (!$error && !empty($PK)) {
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
		$ssh_keys = array_filter(array_map('trim', explode("\n", $PK)));
		$ssh_fingerprints = array();

		foreach ($ssh_keys as &$ssh_key) {
			if (!valid_ssh_pubkey($ssh_key)) {
				$error = __("The SSH public key is invalid.");
				break;
			}

			$ssh_fingerprint = ssh_key_fingerprint($ssh_key);
			if (!$ssh_fingerprint) {
				$error = __("The SSH public key is invalid.");
				break;
			}

			$tokens = explode(" ", $ssh_key);
			$ssh_key = $tokens[0] . " " . $tokens[1];

			$ssh_fingerprints[] = $ssh_fingerprint;
182
		}
183
184
185
186
187
188

		/*
		 * Destroy last reference to prevent accidentally overwriting
		 * an array element.
		 */
		unset($ssh_key);
189
190
	}

191
192
193
194
195
	if (isset($_COOKIE['AURSID'])) {
		$atype = account_from_sid($_COOKIE['AURSID']);
		if (($atype == "User" && $T > 1) || ($atype == "Trusted User" && $T > 2)) {
			$error = __("Cannot increase account permissions.");
		}
eric's avatar
eric committed
196
	}
197

198
199
200
201
	if (!$error && !array_key_exists($L, $SUPPORTED_LANGS)) {
		$error = __("Language is not currently supported.");
	}
	if (!$error) {
202
203
204
205
		/*
		 * Check whether the user name is available.
		 * TODO: Fix race condition.
		 */
206
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
207
		$q.= "WHERE Username = " . $dbh->quote($U);
eric's avatar
eric committed
208
209
210
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
211
212
213
214
215
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The username, %s%s%s, is already in use.",
Lukas Fleischer's avatar
Lukas Fleischer committed
216
				"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
217
218
219
		}
	}
	if (!$error) {
220
221
222
223
		/*
		 * Check whether the e-mail address is available.
		 * TODO: Fix race condition.
		 */
224
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
225
		$q.= "WHERE Email = " . $dbh->quote($E);
eric's avatar
eric committed
226
227
228
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
229
230
231
232
233
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The address, %s%s%s, is already in use.",
Lukas Fleischer's avatar
Lukas Fleischer committed
234
					"<strong>", htmlspecialchars($E,ENT_QUOTES), "</strong>");
235
236
		}
	}
237
	if (!$error && count($ssh_keys) > 0) {
238
		/*
239
		 * Check whether any of the SSH public keys is already in use.
240
241
		 * TODO: Fix race condition.
		 */
242
243
244
245
		$q = "SELECT Fingerprint FROM SSHPubKeys ";
		$q.= "WHERE Fingerprint IN (";
		$q.= implode(',', array_map(array($dbh, 'quote'), $ssh_fingerprints));
		$q.= ")";
246
		if ($TYPE == "edit") {
247
			$q.= " AND UserID != " . intval($UID);
248
249
250
251
		}
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

252
		if ($row) {
253
			$error = __("The SSH public key, %s%s%s, is already in use.",
254
					"<strong>", htmlspecialchars($row[0], ENT_QUOTES), "</strong>");
255
256
		}
	}
257

258
	if ($error) {
259
260
		$message = "<ul class='errorlist'><li>".$error."</li></ul>\n";
		return array(false, $message);
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
	}

	if ($TYPE == "new") {
		/* Create an unprivileged user. */
		$salt = generate_salt();
		if (empty($P)) {
			$send_resetkey = true;
			$email = $E;
		} else {
			$send_resetkey = false;
			$P = salted_hash($P, $salt);
		}
		$U = $dbh->quote($U);
		$E = $dbh->quote($E);
		$P = $dbh->quote($P);
		$salt = $dbh->quote($salt);
		$R = $dbh->quote($R);
		$L = $dbh->quote($L);
		$I = $dbh->quote($I);
		$K = $dbh->quote(str_replace(" ", "", $K));
		$q = "INSERT INTO Users (AccountTypeID, Suspended, ";
		$q.= "InactivityTS, Username, Email, Passwd, Salt, ";
283
		$q.= "RealName, LangPreference, IRCNick, PGPKey) ";
284
		$q.= "VALUES (1, 0, 0, $U, $E, $P, $salt, $R, $L, ";
285
		$q.= "$I, $K)";
286
287
		$result = $dbh->exec($q);
		if (!$result) {
288
			$message = __("Error trying to create account, %s%s%s.",
289
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
290
			return array(false, $message);
291
292
		}

293
294
295
		$uid = $dbh->lastInsertId();
		account_set_ssh_keys($uid, $ssh_keys, $ssh_fingerprints);

296
		$message = __("The account, %s%s%s, has been successfully created.",
297
				"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
298
		$message .= "<p>\n";
299

300
301
		if ($send_resetkey) {
			send_resetkey($email, true);
302
303
			$message .= __("A password reset key has been sent to your e-mail address.");
			$message .= "</p>\n";
304
		} else {
305
306
			$message .= __("Click on the Login link above to use your account.");
			$message .= "</p>\n";
307
		}
308
	} else {
309
310
311
312
313
314
315
316
317
318
319
320
		/* Modify an existing account. */
		$q = "SELECT InactivityTS FROM Users WHERE ";
		$q.= "ID = " . intval($UID);
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);
		if ($row[0] && $J) {
			$inactivity_ts = $row[0];
		} elseif ($J) {
			$inactivity_ts = time();
		} else {
			$inactivity_ts = 0;
		}
321

322
323
324
325
326
327
328
329
330
		$q = "UPDATE Users SET ";
		$q.= "Username = " . $dbh->quote($U);
		if ($T) {
			$q.= ", AccountTypeID = ".intval($T);
		}
		if ($S) {
			/* Ensure suspended users can't keep an active session */
			delete_user_sessions($UID);
			$q.= ", Suspended = 1";
331
		} else {
332
333
334
			$q.= ", Suspended = 0";
		}
		$q.= ", Email = " . $dbh->quote($E);
335
336
337
338
339
		if ($H) {
			$q.= ", HideEmail = 1";
		} else {
			$q.= ", HideEmail = 0";
		}
340
341
342
343
344
345
346
347
348
349
		if ($P) {
			$salt = generate_salt();
			$hash = salted_hash($P, $salt);
			$q .= ", Passwd = '$hash', Salt = '$salt'";
		}
		$q.= ", RealName = " . $dbh->quote($R);
		$q.= ", LangPreference = " . $dbh->quote($L);
		$q.= ", IRCNick = " . $dbh->quote($I);
		$q.= ", PGPKey = " . $dbh->quote(str_replace(" ", "", $K));
		$q.= ", InactivityTS = " . $inactivity_ts;
350
		$q.= ", CommentNotify = " . ($CN ? "1" : "0");
351
		$q.= ", UpdateNotify = " . ($UN ? "1" : "0");
352
		$q.= ", OwnershipNotify = " . ($ON ? "1" : "0");
353
354
		$q.= " WHERE ID = ".intval($UID);
		$result = $dbh->exec($q);
355

356
		$ssh_key_result = account_set_ssh_keys($UID, $ssh_keys, $ssh_fingerprints);
357

358
		if ($result === false || $ssh_key_result === false) {
359
			$message = __("No changes were made to the account, %s%s%s.",
360
361
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
		} else {
362
			$message = __("The account, %s%s%s, has been successfully modified.",
363
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
364
365
		}
	}
366
367

	return array(true, $message);
368
369
}

370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/**
 * Display the search results page
 *
 * @param string $O The offset for the results page
 * @param string $SB The column to sort the results page by
 * @param string $U The username search criteria
 * @param string $T The account type search criteria
 * @param string $S Whether the account is suspended search criteria
 * @param string $E The e-mail address search criteria
 * @param string $R The real name search criteria
 * @param string $I The IRC nickname search criteria
 * @param string $K The PGP key fingerprint search criteria
 *
 * @return void
 */
Lukas Fleischer's avatar
Lukas Fleischer committed
385
function search_results_page($O=0,$SB="",$U="",$T="",
386
		$S="",$E="",$R="",$I="",$K="") {
387
388
389
390
391
392
393
394
395
396
397
398

	$HITS_PER_PAGE = 50;
	if ($O) {
		$OFFSET = intval($O);
	} else {
		$OFFSET = 0;
	}
	if ($OFFSET < 0) {
		$OFFSET = 0;
	}
	$search_vars = array();

399
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
400

401
402
403
404
405
406
407
408
409
410
411
412
	$q = "SELECT Users.*, AccountTypes.AccountType ";
	$q.= "FROM Users, AccountTypes ";
	$q.= "WHERE AccountTypes.ID = Users.AccountTypeID ";
	if ($T == "u") {
		$q.= "AND AccountTypes.ID = 1 ";
		$search_vars[] = "T";
	} elseif ($T == "t") {
		$q.= "AND AccountTypes.ID = 2 ";
		$search_vars[] = "T";
	} elseif ($T == "d") {
		$q.= "AND AccountTypes.ID = 3 ";
		$search_vars[] = "T";
413
414
415
	} elseif ($T == "td") {
		$q.= "AND AccountTypes.ID = 4 ";
		$search_vars[] = "T";
416
417
418
419
420
421
	}
	if ($S) {
		$q.= "AND Users.Suspended = 1 ";
		$search_vars[] = "S";
	}
	if ($U) {
canyonknight's avatar
canyonknight committed
422
423
		$U = "%" . addcslashes($U, '%_') . "%";
		$q.= "AND Username LIKE " . $dbh->quote($U) . " ";
424
425
426
		$search_vars[] = "U";
	}
	if ($E) {
canyonknight's avatar
canyonknight committed
427
428
		$E = "%" . addcslashes($E, '%_') . "%";
		$q.= "AND Email LIKE " . $dbh->quote($E) . " ";
429
430
431
		$search_vars[] = "E";
	}
	if ($R) {
canyonknight's avatar
canyonknight committed
432
433
		$R = "%" . addcslashes($R, '%_') . "%";
		$q.= "AND RealName LIKE " . $dbh->quote($R) . " ";
434
435
436
		$search_vars[] = "R";
	}
	if ($I) {
canyonknight's avatar
canyonknight committed
437
438
		$I = "%" . addcslashes($I, '%_') . "%";
		$q.= "AND IRCNick LIKE " . $dbh->quote($I) . " ";
439
440
		$search_vars[] = "I";
	}
441
	if ($K) {
canyonknight's avatar
canyonknight committed
442
443
		$K = "%" . addcslashes(str_replace(" ", "", $K), '%_') . "%";
		$q.= "AND PGPKey LIKE " . $dbh->quote($K) . " ";
444
445
		$search_vars[] = "K";
	}
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
	switch ($SB) {
		case 't':
			$q.= "ORDER BY AccountTypeID, Username ";
			break;
		case 'r':
			$q.= "ORDER BY RealName, AccountTypeID ";
			break;
		case 'i':
			$q.= "ORDER BY IRCNick, AccountTypeID ";
			break;
		default:
			$q.= "ORDER BY Username, AccountTypeID ";
			break;
	}
	$search_vars[] = "SB";
461
	$q.= "LIMIT " . $HITS_PER_PAGE . " OFFSET " . $OFFSET;
462

463
	$dbh = DB::connect();
464

canyonknight's avatar
canyonknight committed
465
	$result = $dbh->query($q);
466

canyonknight's avatar
canyonknight committed
467
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
468
469
470
		$userinfo[] = $row;
	}

471
	include("account_search_results.php");
472
473
474
	return;
}

475
476
477
478
/**
 * Attempt to login and generate a session
 *
 * @return array Session ID for user, error message if applicable
479
 */
480
function try_login() {
Loui Chang's avatar
Loui Chang committed
481
	$login_error = "";
482
483
484
	$new_sid = "";
	$userID = null;

485
486
487
488
489
490
491
492
493
494
495
	if (!isset($_REQUEST['user']) && !isset($_REQUEST['passwd'])) {
		return array('SID' => '', 'error' => null);
	}

	if (is_ipbanned()) {
		$login_error = __('The login form is currently disabled ' .
						'for your IP address, probably due ' .
						'to sustained spam attacks. Sorry for the ' .
						'inconvenience.');
		return array('SID' => '', 'error' => $login_error);
	}
496

497
	$dbh = DB::connect();
498
	$userID = uid_from_loginname($_REQUEST['user']);
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522

	if (user_suspended($userID)) {
		$login_error = __('Account suspended');
		return array('SID' => '', 'error' => $login_error);
	} elseif (passwd_is_empty($userID)) {
		$login_error = __('Your password has been reset. ' .
			'If you just created a new account, please ' .
			'use the link from the confirmation email ' .
			'to set an initial password. Otherwise, ' .
			'please request a reset key on the %s' .
			'Password Reset%s page.', '<a href="' .
			htmlspecialchars(get_uri('/passreset')) . '">',
			'</a>');
		return array('SID' => '', 'error' => $login_error);
	} elseif (!valid_passwd($userID, $_REQUEST['passwd'])) {
		$login_error = __("Bad username or password.");
		return array('SID' => '', 'error' => $login_error);
	}

	$logged_in = 0;
	$num_tries = 0;

	/* Generate a session ID and store it. */
	while (!$logged_in && $num_tries < 5) {
523
524
		$session_limit = config_get_int('options', 'max_sessions_per_user');
		if ($session_limit) {
525
526
			/*
			 * Delete all user sessions except the
527
			 * last ($session_limit - 1).
528
529
530
531
532
			 */
			$q = "DELETE s.* FROM Sessions s ";
			$q.= "LEFT JOIN (SELECT SessionID FROM Sessions ";
			$q.= "WHERE UsersId = " . $userID . " ";
			$q.= "ORDER BY LastUpdateTS DESC ";
533
			$q.= "LIMIT " . ($session_limit - 1) . ") q ";
534
535
536
537
			$q.= "ON s.SessionID = q.SessionID ";
			$q.= "WHERE s.UsersId = " . $userID . " ";
			$q.= "AND q.SessionID IS NULL;";
			$dbh->query($q);
538
		}
539
540
541
542
543
544
545
546
547
548

		$new_sid = new_sid();
		$q = "INSERT INTO Sessions (UsersID, SessionID, LastUpdateTS)"
		  ." VALUES (" . $userID . ", '" . $new_sid . "', UNIX_TIMESTAMP())";
		$result = $dbh->exec($q);

		/* Query will fail if $new_sid is not unique. */
		if ($result) {
			$logged_in = 1;
			break;
549
		}
550
551
552
553
554
555
556

		$num_tries++;
	}

	if (!$logged_in) {
		$login_error = __('An error occurred trying to generate a user session.');
		return array('SID' => $new_sid, 'error' => $login_error);
557
	}
558
559

	$q = "UPDATE Users SET LastLogin = UNIX_TIMESTAMP(), ";
560
561
	$q.= "LastLoginIPAddress = " . $dbh->quote($_SERVER['REMOTE_ADDR']) . " ";
	$q.= "WHERE ID = $userID";
562
563
564
565
566
	$dbh->exec($q);

	/* Set the SID cookie. */
	if (isset($_POST['remember_me']) && $_POST['remember_me'] == "on") {
		/* Set cookies for 30 days. */
567
568
		$timeout = config_get_int('options', 'persistent_cookie_timeout');
		$cookie_time = time() + $timeout;
569
570
571
572
573
574
575
576
577
578

		/* Set session for 30 days. */
		$q = "UPDATE Sessions SET LastUpdateTS = $cookie_time ";
		$q.= "WHERE SessionID = '$new_sid'";
		$dbh->exec($q);
	} else {
		$cookie_time = 0;
	}

	setcookie("AURSID", $new_sid, $cookie_time, "/", null, !empty($_SERVER['HTTPS']), true);
579
580
581
582
583
584

	$referer = in_request('referer');
	if (strpos($referer, aur_location()) !== 0) {
		$referer = '/';
	}
	header("Location: " . get_uri($referer));
585
	$login_error = "";
586
587
}

588
589
590
591
592
593
594
595
596
597
598
/**
 * Determine if the user is using a banned IP address
 *
 * @return bool True if IP address is banned, otherwise false
 */
function is_ipbanned() {
	$dbh = DB::connect();

	$q = "SELECT * FROM Bans WHERE IPAddress = " . $dbh->quote(ip2long($_SERVER['REMOTE_ADDR']));
	$result = $dbh->query($q);

599
	return ($result->fetchColumn() ? true : false);
600
601
}

602
603
604
/**
 * Validate a username against a collection of rules
 *
605
606
607
608
 * The username must be longer or equal to the configured minimum length. It
 * must be shorter or equal to the configured maximum length. It must start and
 * end with either a letter or a number. It can contain one period, hypen, or
 * underscore. Returns boolean of whether name is valid.
609
610
611
 *
 * @param string $user Username to validate
 *
612
 * @return bool True if username meets criteria, otherwise false
613
 */
614
function valid_username($user) {
615
616
617
618
	$length_min = config_get_int('options', 'username_min_len');
	$length_max = config_get_int('options', 'username_max_len');

	if (strlen($user) < $length_min || strlen($user) > $length_max) {
619
		return false;
620
	} else if (!preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/Di", $user)) {
621
		return false;
622
	}
623

624
	return true;
625
626
}

627
628
629
630
631
632
633
/**
 * Determine if a user already has a proposal open about themselves
 *
 * @param string $user Username to checkout for open proposal
 *
 * @return bool True if there is an open proposal about the user, otherwise false
 */
634
function open_user_proposals($user) {
635
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
636
637
638
	$q = "SELECT * FROM TU_VoteInfo WHERE User = " . $dbh->quote($user) . " ";
	$q.= "AND End > UNIX_TIMESTAMP()";
	$result = $dbh->query($q);
639
640

	return ($result->fetchColumn() ? true : false);
canyonknight's avatar
canyonknight committed
641
642
}

643
644
645
646
647
648
649
650
651
652
/**
 * Add a new Trusted User proposal to the database
 *
 * @param string $agenda The agenda of the vote
 * @param string $user The use the vote is about
 * @param int $votelength The length of time for the vote to last
 * @param string $submitteruid The user ID of the individual who submitted the proposal
 *
 * @return void
 */
653
function add_tu_proposal($agenda, $user, $votelength, $quorum, $submitteruid) {
654
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
655

656
	$q = "SELECT COUNT(*) FROM Users WHERE (AccountTypeID = 2 OR AccountTypeID = 4)";
657
658
659
660
	$result = $dbh->query($q);
	$row = $result->fetch(PDO::FETCH_NUM);
	$active_tus = $row[0];

661
	$q = "INSERT INTO TU_VoteInfo (Agenda, User, Submitted, End, Quorum, ";
662
	$q.= "SubmitterID, ActiveTUs) VALUES ";
canyonknight's avatar
canyonknight committed
663
664
	$q.= "(" . $dbh->quote($agenda) . ", " . $dbh->quote($user) . ", ";
	$q.= "UNIX_TIMESTAMP(), UNIX_TIMESTAMP() + " . $dbh->quote($votelength);
665
666
	$q.= ", " . $dbh->quote($quorum) . ", " . $submitteruid . ", ";
	$q.= $active_tus . ")";
canyonknight's avatar
canyonknight committed
667
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
668
669
}

670
671
672
673
674
675
676
677
/**
 * Add a reset key to the database for a specified user
 *
 * @param string $resetkey A password reset key to be stored in database
 * @param string $uid The user ID to store the reset key for
 *
 * @return void
 */
678
function create_resetkey($resetkey, $uid) {
679
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
680
681
682
	$q = "UPDATE Users ";
	$q.= "SET ResetKey = '" . $resetkey . "' ";
	$q.= "WHERE ID = " . $uid;
canyonknight's avatar
canyonknight committed
683
	$dbh->exec($q);
canyonknight's avatar
canyonknight committed
684
685
}

686
687
688
689
/**
 * Send a reset key to a specific e-mail address
 *
 * @param string $email E-mail address of the user resetting their password
690
 * @param bool $welcome Whether to use the welcome message
691
692
693
 *
 * @return void
 */
694
function send_resetkey($email, $welcome=false) {
695
	$uid = uid_from_email($email);
696
697
698
699
700
701
702
703
704
	if ($uid == null) {
		return;
	}

	/* We (ab)use new_sid() to get a random 32 characters long string. */
	$resetkey = new_sid();
	create_resetkey($resetkey, $uid);

	/* Send e-mail with confirmation link. */
705
	notify(array($welcome ? 'welcome' : 'send-resetkey', $uid));
706
707
}

708
709
710
711
712
713
714
715
716
717
/**
 * Change a user's password in the database if reset key and e-mail are correct
 *
 * @param string $hash New MD5 hash of a user's password
 * @param string $salt New salt for the user's password
 * @param string $resetkey Code e-mailed to a user to reset a password
 * @param string $email E-mail address of the user resetting their password
 *
 * @return string|void Redirect page if successful, otherwise return error message
 */
718
function password_reset($hash, $salt, $resetkey, $email) {
719
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
720
721
722
723
724
	$q = "UPDATE Users ";
	$q.= "SET Passwd = '$hash', ";
	$q.= "Salt = '$salt', ";
	$q.= "ResetKey = '' ";
	$q.= "WHERE ResetKey != '' ";
canyonknight's avatar
canyonknight committed
725
726
727
	$q.= "AND ResetKey = " . $dbh->quote($resetkey) . " ";
	$q.= "AND Email = " . $dbh->quote($email);
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
728

canyonknight's avatar
canyonknight committed
729
	if (!$result) {
canyonknight's avatar
canyonknight committed
730
731
732
		$error = __('Invalid e-mail and reset key combination.');
		return $error;
	} else {
733
		header('Location: ' . get_uri('/passreset/') . '?step=complete');
canyonknight's avatar
canyonknight committed
734
735
736
737
		exit();
	}
}

738
739
740
741
742
743
744
/**
 * Determine if the password is longer than the minimum length
 *
 * @param string $passwd The password to check
 *
 * @return bool True if longer than minimum length, otherwise false
 */
745
function good_passwd($passwd) {
746
747
	$length_min = config_get_int('options', 'passwd_min_len');
	return (strlen($passwd) >= $length_min);
748
749
}

750
751
752
753
754
755
756
/**
 * Determine if the password is correct and salt it if it hasn't been already
 *
 * @param string $userID The user ID to check the password against
 * @param string $passwd The password the visitor sent
 *
 * @return bool True if password was correct and properly salted, otherwise false
757
 */
758
function valid_passwd($userID, $passwd) {
759
	$dbh = DB::connect();
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
	if ($passwd == "") {
		return false;
	}

	/* Get salt for this user. */
	$salt = get_salt($userID);
	if ($salt) {
		$q = "SELECT ID FROM Users ";
		$q.= "WHERE ID = " . $userID . " ";
		$q.= "AND Passwd = " . $dbh->quote(salted_hash($passwd, $salt));
		$result = $dbh->query($q);
		if (!$result) {
			return false;
		}

		$row = $result->fetch(PDO::FETCH_NUM);
		return ($row[0] > 0);
	} else {
		/* Check password without using salt. */
		$q = "SELECT ID FROM Users ";
		$q.= "WHERE ID = " . $userID . " ";
		$q.= "AND Passwd = " . $dbh->quote(md5($passwd));
		$result = $dbh->query($q);
		if (!$result) {
			return false;
		}

		$row = $result->fetch(PDO::FETCH_NUM);
		if (!$row[0]) {
			return false;
790
		}
791
792
793
794
795
796
797
798
799

		/* Password correct, but salt it first! */
		if (!save_salt($userID, $passwd)) {
			trigger_error("Unable to salt user's password;" .
				" ID " . $userID, E_USER_WARNING);
			return false;
		}

		return true;
800
801
802
	}
}

803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
/**
 * Determine if a user's password is empty
 *
 * @param string $uid The user ID to check for an empty password
 *
 * @return bool True if the user's password is empty, otherwise false
 */
function passwd_is_empty($uid) {
	$dbh = DB::connect();

	$q = "SELECT * FROM Users WHERE ID = " . $dbh->quote($uid) . " ";
	$q .= "AND Passwd = " . $dbh->quote('');
	$result = $dbh->query($q);

	if ($result->fetchColumn()) {
		return true;
	} else {
		return false;
	}
}

824
825
826
827
828
829
/**
 * Determine if the PGP key fingerprint is valid (must be 40 hexadecimal digits)
 *
 * @param string $fingerprint PGP fingerprint to check if valid
 *
 * @return bool True if the fingerprint is 40 hexadecimal digits, otherwise false
830
 */
831
function valid_pgp_fingerprint($fingerprint) {
832
833
	$fingerprint = str_replace(" ", "", $fingerprint);
	return (strlen($fingerprint) == 40 && ctype_xdigit($fingerprint));
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
}

/**
 * Determine if the SSH public key is valid
 *
 * @param string $pubkey SSH public key to check
 *
 * @return bool True if the SSH public key is valid, otherwise false
 */
function valid_ssh_pubkey($pubkey) {
	$valid_prefixes = array(
		"ssh-rsa", "ssh-dss", "ecdsa-sha2-nistp256",
		"ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521", "ssh-ed25519"
	);

	$has_valid_prefix = false;
	foreach ($valid_prefixes as $prefix) {
		if (strpos($pubkey, $prefix . " ") === 0) {
			$has_valid_prefix = true;
			break;
		}
	}
	if (!$has_valid_prefix) {
		return false;
	}

	$tokens = explode(" ", $pubkey);
	if (empty($tokens[1])) {
		return false;
	}

	return (base64_encode(base64_decode($tokens[1], true)) == $tokens[1]);
866
867
}

868
869
870
871
872
873
/**
 * Determine if the user account has been suspended
 *
 * @param string $id The ID of user to check if suspended
 *
 * @return bool True if the user is suspended, otherwise false
874
 */
875
function user_suspended($id) {
876
	$dbh = DB::connect();
elij's avatar
elij committed
877
878
879
	if (!$id) {
		return false;
	}
880
	$q = "SELECT Suspended FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
881
	$result = $dbh->query($q);
882
	if ($result) {
canyonknight's avatar
canyonknight committed
883
		$row = $result->fetch(PDO::FETCH_NUM);
884
		if ($row[0]) {
885
886
			return true;
		}
887
888
889
890
	}
	return false;
}

891
892
893
894
895
896
/**
 * Delete a specified user account from the database
 *
 * @param int $id The user ID of the account to be deleted
 *
 * @return void
897
 */
898
function user_delete($id) {
899
	$dbh = DB::connect();
900
901
902
903
904
905
906
907
908
	$id = intval($id);

	/*
	 * These are normally already taken care of by propagation constraints
	 * but it is better to be explicit here.
	 */
	$fields_delete = array(
		array("Sessions", "UsersID"),
		array("PackageVotes", "UsersID"),
909
		array("PackageNotifications", "UsersID")
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
	);

	$fields_set_null = array(
		array("PackageBases", "SubmitterUID"),
		array("PackageBases", "MaintainerUID"),
		array("PackageBases", "SubmitterUID"),
		array("PackageComments", "UsersID"),
		array("PackageComments", "DelUsersID"),
		array("PackageRequests", "UsersID"),
		array("TU_VoteInfo", "SubmitterID"),
		array("TU_Votes", "UserID")
	);

	foreach($fields_delete as list($table, $field)) {
		$q = "DELETE FROM " . $table . " ";
		$q.= "WHERE " . $field . " = " . $id;
		$dbh->query($q);
	}

	foreach($fields_set_null as list($table, $field)) {
		$q = "UPDATE " . $table . " SET " . $field . " = NULL ";
		$q.= "WHERE " . $field . " = " . $id;
		$dbh->query($q);
	}

935
	$q = "DELETE FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
936
	$dbh->query($q);
937
938
939
	return;
}

940
941
942
943
944
945
946
/**
 * Remove the session from the database on logout
 *
 * @param string $sid User's session ID
 *
 * @return void
 */
947
function delete_session_id($sid) {
948
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
949

canyonknight's avatar
canyonknight committed
950
951
	$q = "DELETE FROM Sessions WHERE SessionID = " . $dbh->quote($sid);
	$dbh->query($q);
canyonknight's avatar
canyonknight committed
952
953
}

954
955
956
957
958
959
960
/**
 * Remove all sessions belonging to a particular user
 *
 * @param int $uid ID of user to remove all sessions for
 *
 * @return void
 */
961
function delete_user_sessions($uid) {
962
	$dbh = DB::connect();
963
964
965
966
967

	$q = "DELETE FROM Sessions WHERE UsersID = " . intval($uid);
	$dbh->exec($q);
}

968
969
970
971
972
/**
 * Remove sessions from the database that have exceed the timeout
 *
 * @return void
 */
973
function clear_expired_sessions() {
974
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
975

976
977
	$timeout = config_get_int('options', 'login_timeout');
	$q = "DELETE FROM Sessions WHERE LastUpdateTS < (UNIX_TIMESTAMP() - " . $timeout . ")";
canyonknight's avatar
canyonknight committed
978
	$dbh->query($q);
979
980
981

	return;
}
982

983
984
985
986
987
988
989
990
/**
 * Get account details for a specific user
 *
 * @param string $uid The User ID of account to get information for
 * @param string $username The username of the account to get for
 *
 * @return array Account details for the specified user
 */
991
function account_details($uid, $username) {
992
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
993
994
995
996
997
998
	$q = "SELECT Users.*, AccountTypes.AccountType ";
	$q.= "FROM Users, AccountTypes ";
	$q.= "WHERE AccountTypes.ID = Users.AccountTypeID ";
	if (!empty($uid)) {
		$q.= "AND Users.ID = ".intval($uid);
	} else {
canyonknight's avatar
canyonknight committed
999
		$q.= "AND Users.Username = " . $dbh->quote($username);
canyonknight's avatar
canyonknight committed
1000
	}
For faster browsing, not all history is shown. View entire blame