acctfuncs.inc.php 30.4 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
50
51
52
53
54
55
/**
 * 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
 * @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
56
 * @param string $J The inactivity status of the displayed user
57
58
59
60
 * @param string $UID The user ID of the displayed user
 *
 * @return void
 */
Lukas Fleischer's avatar
Lukas Fleischer committed
61
function display_account_form($A,$U="",$T="",$S="",
62
		$E="",$P="",$C="",$R="",$L="",$I="",$K="",$J="", $UID=0) {
63
64
	global $SUPPORTED_LANGS;

65
	include("account_edit_form.php");
66
	return;
67
}
68

69
70
71
72
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
 * @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
85
 * @param string $J The inactivity status of the user
86
87
88
89
 * @param string $UID The user ID of the modified account
 *
 * @return string|void Return void if successful, otherwise return error
 */
Lukas Fleischer's avatar
Lukas Fleischer committed
90
function process_account_form($TYPE,$A,$U="",$T="",$S="",$E="",
91
			$P="",$C="",$R="",$L="",$I="",$K="",$J="",$UID=0) {
92
	global $SUPPORTED_LANGS, $AUR_LOCATION;
93

94
95
96
97
98
99
100
101
102
	$error = '';

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

103
	$dbh = DB::connect();
104

105
	if(isset($_COOKIE['AURSID'])) {
106
		$editor_user = uid_from_sid($_COOKIE['AURSID']);
107
108
	}
	else {
109
		$editor_user = null;
110
	}
111
112

	if (empty($E) || empty($U)) {
113
114
		$error = __("Missing a required field.");
	}
115

116
117
	if ($TYPE != "new" && !$UID) {
		$error = __("Missing User ID");
118
	}
119

120
	if (!$error && !valid_username($U)) {
121
		$error = __("The username is invalid.") . "<ul>\n"
122
			."<li>" . __("It must be between %s and %s characters long",
123
124
			USERNAME_MIN_LEN,  USERNAME_MAX_LEN )
			. "</li>"
125
			. "<li>" . __("Start and end with a letter or number") . "</li>"
126
			. "<li>" . __("Can contain only one period, underscore or hyphen.")
127
			. "</li>\n</ul>";
128
	}
129

130
131
132
	if (!$error && $P && $C && ($P != $C)) {
		$error = __("Password fields do not match.");
	}
133
	if (!$error && $P != '' && !good_passwd($P))
134
		$error = __("Your password must be at least %s characters.",PASSWD_MIN_LEN);
135

136
137
138
	if (!$error && !valid_email($E)) {
		$error = __("The email address is invalid.");
	}
139
140
141
142
143

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

144
145
146
147
148
	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
149
	}
150

151
152
153
154
	if (!$error && !array_key_exists($L, $SUPPORTED_LANGS)) {
		$error = __("Language is not currently supported.");
	}
	if (!$error) {
155
156
157
158
		/*
		 * Check whether the user name is available.
		 * TODO: Fix race condition.
		 */
159
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
160
		$q.= "WHERE Username = " . $dbh->quote($U);
eric's avatar
eric committed
161
162
163
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
164
165
166
167
168
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The username, %s%s%s, is already in use.",
Lukas Fleischer's avatar
Lukas Fleischer committed
169
				"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
170
171
172
		}
	}
	if (!$error) {
173
174
175
176
		/*
		 * Check whether the e-mail address is available.
		 * TODO: Fix race condition.
		 */
177
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
178
		$q.= "WHERE Email = " . $dbh->quote($E);
eric's avatar
eric committed
179
180
181
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
182
183
184
185
186
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The address, %s%s%s, is already in use.",
Lukas Fleischer's avatar
Lukas Fleischer committed
187
					"<strong>", htmlspecialchars($E,ENT_QUOTES), "</strong>");
188
189
		}
	}
190

191
	if ($error) {
192
		print "<ul class='errorlist'><li>".$error."</li></ul>\n";
Lukas Fleischer's avatar
Lukas Fleischer committed
193
		display_account_form($A, $U, $T, $S, $E, "", "",
194
				$R, $L, $I, $K, $J, $UID);
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
		return;
	}

	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, ";
		$q.= "RealName, LangPreference, IRCNick, PGPKey) ";
		$q.= "VALUES (1, 0, 0, $U, $E, $P, $salt, $R, $L, ";
		$q.= "$I, $K)";
		$result = $dbh->exec($q);
		if (!$result) {
			print __("Error trying to create account, %s%s%s.",
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
			return;
		}

		print __("The account, %s%s%s, has been successfully created.",
				"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
		print "<p>\n";

		if (!$send_resetkey) {
			print __("Click on the Login link above to use your account.");
			print "</p>\n";
			return;
		}

		$subject = 'Welcome to the Arch User Repository';
		$body = __('Welcome to %s! In order ' .
			'to set an initial password ' .
			'for your new account, ' .
			'please click the link ' .
			'below. If the link does ' .
			'not work try copying and ' .
			'pasting it into your ' .
			'browser.',
			$AUR_LOCATION);
		send_resetkey($email, $subject, $body);

		print __("A password reset key has been sent to your e-mail address.");
		print "</p>\n";
252
	} else {
253
254
255
256
257
258
259
260
261
262
263
264
		/* 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;
		}
265

266
267
268
269
270
271
272
273
274
		$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";
275
		} else {
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
			$q.= ", Suspended = 0";
		}
		$q.= ", Email = " . $dbh->quote($E);
		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;
		$q.= " WHERE ID = ".intval($UID);
		$result = $dbh->exec($q);
		if (!$result) {
			print __("No changes were made to the account, %s%s%s.",
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
		} else {
			print __("The account, %s%s%s, has been successfully modified.",
					"<strong>", htmlspecialchars($U,ENT_QUOTES), "</strong>");
297
298
299
300
		}
	}
}

301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
/**
 * 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 $K The PGP key fingerprint search criteria
 *
 * @return void
 */
Lukas Fleischer's avatar
Lukas Fleischer committed
316
function search_results_page($O=0,$SB="",$U="",$T="",
317
		$S="",$E="",$R="",$I="",$K="") {
318
319
320
321
322
323
324
325
326
327
328
329

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

330
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
331

332
333
334
335
336
337
338
339
340
341
342
343
	$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 ";
		$search_vars[] = "T";
344
345
346
	} elseif ($T == "td") {
		$q.= "AND AccountTypes.ID = 4 ";
		$search_vars[] = "T";
347
348
349
350
351
352
	}
	if ($S) {
		$q.= "AND Users.Suspended = 1 ";
		$search_vars[] = "S";
	}
	if ($U) {
canyonknight's avatar
canyonknight committed
353
354
		$U = "%" . addcslashes($U, '%_') . "%";
		$q.= "AND Username LIKE " . $dbh->quote($U) . " ";
355
356
357
		$search_vars[] = "U";
	}
	if ($E) {
canyonknight's avatar
canyonknight committed
358
359
		$E = "%" . addcslashes($E, '%_') . "%";
		$q.= "AND Email LIKE " . $dbh->quote($E) . " ";
360
361
362
		$search_vars[] = "E";
	}
	if ($R) {
canyonknight's avatar
canyonknight committed
363
364
		$R = "%" . addcslashes($R, '%_') . "%";
		$q.= "AND RealName LIKE " . $dbh->quote($R) . " ";
365
366
367
		$search_vars[] = "R";
	}
	if ($I) {
canyonknight's avatar
canyonknight committed
368
369
		$I = "%" . addcslashes($I, '%_') . "%";
		$q.= "AND IRCNick LIKE " . $dbh->quote($I) . " ";
370
371
		$search_vars[] = "I";
	}
372
	if ($K) {
canyonknight's avatar
canyonknight committed
373
374
		$K = "%" . addcslashes(str_replace(" ", "", $K), '%_') . "%";
		$q.= "AND PGPKey LIKE " . $dbh->quote($K) . " ";
375
376
		$search_vars[] = "K";
	}
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
	switch ($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";
392
	$q.= "LIMIT " . $HITS_PER_PAGE . " OFFSET " . $OFFSET;
393

394
	$dbh = DB::connect();
395

canyonknight's avatar
canyonknight committed
396
	$result = $dbh->query($q);
397

canyonknight's avatar
canyonknight committed
398
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
399
400
401
		$userinfo[] = $row;
	}

402
	include("account_search_results.php");
403
404
405
	return;
}

406
407
408
409
410
411
412
/**
 * Attempt to login and generate a session
 *
 * @global int $MAX_SESSIONS_PER_USER Maximum sessions a single user may have open
 * @global int $PERSISTENT_COOKIE_TIMEOUT Time until cookie expires
 *
 * @return array Session ID for user, error message if applicable
413
 */
414
function try_login() {
415
	global $MAX_SESSIONS_PER_USER, $PERSISTENT_COOKIE_TIMEOUT;
416

Loui Chang's avatar
Loui Chang committed
417
	$login_error = "";
418
419
420
	$new_sid = "";
	$userID = null;

421
422
423
424
425
426
427
428
429
430
431
	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);
	}
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
	$dbh = DB::connect();
	$userID = valid_user($_REQUEST['user']);

	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 && $num_tries < 5) {
		if ($MAX_SESSIONS_PER_USER) {
			/*
			 * Delete all user sessions except the
			 * last ($MAX_SESSIONS_PER_USER - 1).
			 */
			$q = "DELETE s.* FROM Sessions s ";
			$q.= "LEFT JOIN (SELECT SessionID FROM Sessions ";
			$q.= "WHERE UsersId = " . $userID . " ";
			$q.= "ORDER BY LastUpdateTS DESC ";
			$q.= "LIMIT " . ($MAX_SESSIONS_PER_USER - 1) . ") q ";
			$q.= "ON s.SessionID = q.SessionID ";
			$q.= "WHERE s.UsersId = " . $userID . " ";
			$q.= "AND q.SessionID IS NULL;";
			$dbh->query($q);
473
		}
474
475
476
477
478
479
480
481
482
483

		$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;
484
		}
485
486
487
488
489
490
491

		$num_tries++;
	}

	if (!$logged_in) {
		$login_error = __('An error occurred trying to generate a user session.');
		return array('SID' => $new_sid, 'error' => $login_error);
492
	}
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514

	$q = "UPDATE Users SET LastLogin = UNIX_TIMESTAMP(), ";
	$q.= "LastLoginIPAddress = " . $dbh->quote(ip2long($_SERVER['REMOTE_ADDR'])) . " ";
	$q.= "WHERE ID = '$userID'";
	$dbh->exec($q);

	/* Set the SID cookie. */
	if (isset($_POST['remember_me']) && $_POST['remember_me'] == "on") {
		/* Set cookies for 30 days. */
		$cookie_time = time() + $PERSISTENT_COOKIE_TIMEOUT;

		/* 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);
	header("Location: " . get_uri('/'));
	$login_error = "";
515
516
}

517
518
519
520
521
522
523
524
525
526
527
/**
 * 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);

528
	return ($result->fetchColumn() ? true : false);
529
530
}

531
532
533
534
535
/**
 * Validate a username against a collection of rules
 *
 * The username must be longer or equal to USERNAME_MIN_LEN. It must be shorter
 * or equal to USERNAME_MAX_LEN. It must start and end with either a letter or
536
537
 * a number. It can contain one period, hypen, or underscore. Returns boolean
 * of whether name is valid.
538
539
540
 *
 * @param string $user Username to validate
 *
541
 * @return bool True if username meets criteria, otherwise false
542
 */
543
function valid_username($user) {
544
545
546
	if (strlen($user) < USERNAME_MIN_LEN ||
	    strlen($user) > USERNAME_MAX_LEN) {
		return false;
547
	} else if (!preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/Di", $user)) {
548
		return false;
549
	}
550

551
	return true;
552
553
}

554
555
556
557
558
559
/**
 * Determine if a username exists in the database
 *
 * @param string $user Username to check in the database
 *
 * @return string|void Return user ID if in database, otherwise void
560
 */
561
function valid_user($user) {
562
563
564
	if (!$user) {
		return false;
	}
565

566
567
568
569
570
571
572
	$dbh = DB::connect();

	$q = "SELECT ID FROM Users WHERE ";
	$q.= "Username = " . $dbh->quote($user);
	$result = $dbh->query($q);
	if (!$result) {
		return null;
573
	}
574
575
576

	$row = $result->fetch(PDO::FETCH_NUM);
	return $row[0];
577
578
}

579
580
581
582
583
584
585
/**
 * Determine if a user already has a proposal open about themselves
 *
 * @param string $user Username to checkout for open proposal
 *
 * @return bool True if there is an open proposal about the user, otherwise false
 */
586
function open_user_proposals($user) {
587
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
588
589
590
	$q = "SELECT * FROM TU_VoteInfo WHERE User = " . $dbh->quote($user) . " ";
	$q.= "AND End > UNIX_TIMESTAMP()";
	$result = $dbh->query($q);
591
592

	return ($result->fetchColumn() ? true : false);
canyonknight's avatar
canyonknight committed
593
594
}

595
596
597
598
599
600
601
602
603
604
/**
 * 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 $submitteruid The user ID of the individual who submitted the proposal
 *
 * @return void
 */
605
function add_tu_proposal($agenda, $user, $votelength, $quorum, $submitteruid) {
606
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
607

608
	$q = "SELECT COUNT(*) FROM Users WHERE (AccountTypeID = 2 OR AccountTypeID = 4)";
609
610
611
612
	$result = $dbh->query($q);
	$row = $result->fetch(PDO::FETCH_NUM);
	$active_tus = $row[0];

613
	$q = "INSERT INTO TU_VoteInfo (Agenda, User, Submitted, End, Quorum, ";
614
	$q.= "SubmitterID, ActiveTUs) VALUES ";
canyonknight's avatar
canyonknight committed
615
616
	$q.= "(" . $dbh->quote($agenda) . ", " . $dbh->quote($user) . ", ";
	$q.= "UNIX_TIMESTAMP(), UNIX_TIMESTAMP() + " . $dbh->quote($votelength);
617
618
	$q.= ", " . $dbh->quote($quorum) . ", " . $submitteruid . ", ";
	$q.= $active_tus . ")";
canyonknight's avatar
canyonknight committed
619
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
620
621
}

622
623
624
625
626
627
628
629
/**
 * 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 $uid The user ID to store the reset key for
 *
 * @return void
 */
630
function create_resetkey($resetkey, $uid) {
631
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
632
633
634
	$q = "UPDATE Users ";
	$q.= "SET ResetKey = '" . $resetkey . "' ";
	$q.= "WHERE ID = " . $uid;
canyonknight's avatar
canyonknight committed
635
	$dbh->exec($q);
canyonknight's avatar
canyonknight committed
636
637
}

638
639
640
641
/**
 * Send a reset key to a specific e-mail address
 *
 * @param string $email E-mail address of the user resetting their password
642
 * @param string $subject Subject of the email
643
644
645
646
 * @param string $body Body of the email
 *
 * @return void
 */
647
function send_resetkey($email, $subject, $body) {
648
649
650
	global $AUR_LOCATION;

	$uid = uid_from_email($email);
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
	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. */
	$body = wordwrap($body, 70);
	$body .=  "\n\n".
		  "{$AUR_LOCATION}/" . get_uri('/passreset/') . "?".
		  "resetkey={$resetkey}";
	$headers = "MIME-Version: 1.0\r\n" .
		   "Content-type: text/plain; charset=UTF-8\r\n" .
		   "Reply-to: noreply@aur.archlinux.org\r\n" .
667
		   "From: notify@aur.archlinux.org\r\n" .
668
669
670
		   "X-Mailer: PHP\r\n" .
		   "X-MimeOLE: Produced By AUR";
	@mail($email, $subject, $body, $headers);
671
672
}

673
674
675
676
677
678
679
680
681
682
/**
 * 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 $email E-mail address of the user resetting their password
 *
 * @return string|void Redirect page if successful, otherwise return error message
 */
683
function password_reset($hash, $salt, $resetkey, $email) {
684
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
685
686
687
688
689
	$q = "UPDATE Users ";
	$q.= "SET Passwd = '$hash', ";
	$q.= "Salt = '$salt', ";
	$q.= "ResetKey = '' ";
	$q.= "WHERE ResetKey != '' ";
canyonknight's avatar
canyonknight committed
690
691
692
	$q.= "AND ResetKey = " . $dbh->quote($resetkey) . " ";
	$q.= "AND Email = " . $dbh->quote($email);
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
693

canyonknight's avatar
canyonknight committed
694
	if (!$result) {
canyonknight's avatar
canyonknight committed
695
696
697
		$error = __('Invalid e-mail and reset key combination.');
		return $error;
	} else {
698
		header('Location: ' . get_uri('/passreset/') . '?step=complete');
canyonknight's avatar
canyonknight committed
699
700
701
702
		exit();
	}
}

703
704
705
706
707
708
709
/**
 * Determine if the password is longer than the minimum length
 *
 * @param string $passwd The password to check
 *
 * @return bool True if longer than minimum length, otherwise false
 */
710
function good_passwd($passwd) {
711
712
713
714
715
716
	if ( strlen($passwd) >= PASSWD_MIN_LEN ) {
		return true;
	}
	return false;
}

717
718
719
720
721
722
723
/**
 * 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 $passwd The password the visitor sent
 *
 * @return bool True if password was correct and properly salted, otherwise false
724
 */
725
function valid_passwd($userID, $passwd) {
726
	$dbh = DB::connect();
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
	if ($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;
757
		}
758
759
760
761
762
763
764
765
766

		/* 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;
767
768
769
	}
}

770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
/**
 * 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;
	}
}

791
792
793
794
795
796
/**
 * Determine if the PGP key fingerprint is valid (must be 40 hexadecimal digits)
 *
 * @param string $fingerprint PGP fingerprint to check if valid
 *
 * @return bool True if the fingerprint is 40 hexadecimal digits, otherwise false
797
 */
798
function valid_pgp_fingerprint($fingerprint) {
799
800
801
802
	$fingerprint = str_replace(" ", "", $fingerprint);
	return (strlen($fingerprint) == 40 && ctype_xdigit($fingerprint));
}

803
804
805
806
807
808
/**
 * Determine if the user account has been suspended
 *
 * @param string $id The ID of user to check if suspended
 *
 * @return bool True if the user is suspended, otherwise false
809
 */
810
function user_suspended($id) {
811
	$dbh = DB::connect();
elij's avatar
elij committed
812
813
814
	if (!$id) {
		return false;
	}
815
	$q = "SELECT Suspended FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
816
	$result = $dbh->query($q);
817
	if ($result) {
canyonknight's avatar
canyonknight committed
818
		$row = $result->fetch(PDO::FETCH_NUM);
819
		if ($row[0]) {
820
821
			return true;
		}
822
823
824
825
	}
	return false;
}

826
827
828
829
830
831
/**
 * Delete a specified user account from the database
 *
 * @param int $id The user ID of the account to be deleted
 *
 * @return void
832
 */
833
function user_delete($id) {
834
	$dbh = DB::connect();
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
866
867
868
869
	$id = intval($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"),
		array("CommentNotify", "UsersID")
	);

	$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);
	}

870
	$q = "DELETE FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
871
	$dbh->query($q);
872
873
874
	return;
}

875
876
877
878
879
880
881
/**
 * Remove the session from the database on logout
 *
 * @param string $sid User's session ID
 *
 * @return void
 */
882
function delete_session_id($sid) {
883
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
884

canyonknight's avatar
canyonknight committed
885
886
	$q = "DELETE FROM Sessions WHERE SessionID = " . $dbh->quote($sid);
	$dbh->query($q);
canyonknight's avatar
canyonknight committed
887
888
}

889
890
891
892
893
894
895
/**
 * Remove all sessions belonging to a particular user
 *
 * @param int $uid ID of user to remove all sessions for
 *
 * @return void
 */
896
function delete_user_sessions($uid) {
897
	$dbh = DB::connect();
898
899
900
901
902

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

903
904
905
906
907
908
909
/**
 * Remove sessions from the database that have exceed the timeout
 *
 * @global int $LOGIN_TIMEOUT Time until session expires
 *
 * @return void
 */
910
function clear_expired_sessions() {
911
912
	global $LOGIN_TIMEOUT;

913
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
914

915
	$q = "DELETE FROM Sessions WHERE LastUpdateTS < (UNIX_TIMESTAMP() - $LOGIN_TIMEOUT)";
canyonknight's avatar
canyonknight committed
916
	$dbh->query($q);
917
918
919

	return;
}
920

921
922
923
924
925
926
927
928
/**
 * Get account details for a specific user
 *
 * @param string $uid The User ID of account to get information for
 * @param string $username The username of the account to get for
 *
 * @return array Account details for the specified user
 */
929
function account_details($uid, $username) {
930
	$dbh = DB::connect();
canyonknight's avatar
canyonknight committed
931
932
933
934
935
936
	$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
937
		$q.= "AND Users.Username = " . $dbh->quote($username);
canyonknight's avatar
canyonknight committed
938
	}
canyonknight's avatar
canyonknight committed
939
	$result = $dbh->query($q);
canyonknight's avatar
canyonknight committed
940
941

	if ($result) {
canyonknight's avatar
canyonknight committed
942
		$row = $result->fetch(PDO::FETCH_ASSOC);
canyonknight's avatar
canyonknight committed
943
944
945
946
947
	}

	return $row;
}

948
949
950
951
952
953
954
955
/**
 * Determine if a user has already voted on a specific proposal
 *
 * @param string $voteid The ID of the Trusted User proposal
 * @param string $uid The ID to check if the user already voted
 *
 * @return bool True if the user has already voted, otherwise false
 */
956
function tu_voted($voteid, $uid) {
957
	$dbh = DB::connect();
958

canyonknight's avatar
canyonknight committed
959
960
961
962
	$q = "SELECT COUNT(*) FROM TU_Votes ";
	$q.= "WHERE VoteID = " . intval($voteid) . " AND UserID = " . intval($uid);
	$result = $dbh->query($q);
	if ($result->fetchColumn() > 0) {
963
964
965
966
967
968
969
		return true;
	}
	else {
		return false;
	}
}

970
971
972
973
974
975
976
/**
 * Get all current Trusted User proposals from the database
 *
 * @param string $order Ascending or descending order for the proposal listing
 *
 * @return array The details for all current Trusted User proposals
 */
977
function current_proposal_list($order) {
978
	$dbh = DB::connect();
979
980

	$q = "SELECT * FROM TU_VoteInfo WHERE End > " . time() . " ORDER BY Submitted " . $order;
canyonknight's avatar
canyonknight committed
981
	$result = $dbh->query($q);
982

983
	$details = array();
canyonknight's avatar
canyonknight committed
984
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
985
986
987
988
989
990
		$details[] = $row;
	}

	return $details;
}

991
992
993
994
995
996
997
998
/**
 * Get a subset of all past Trusted User proposals from the database
 *
 * @param string $order Ascending or descending order for the proposal listing
 * @param string $lim The number of proposals to list with the offset
 *
 * @return array The details for the subset of past Trusted User proposals
 */
999
function past_proposal_list($order, $lim) {
1000
	$dbh = DB::connect();
For faster browsing, not all history is shown. View entire blame