acctfuncs.inc.php 20.4 KB
Newer Older
1
<?php
2

Dan McGee's avatar
Dan McGee committed
3
4
5
6
7
8
9
10
# Helper function- retrieve request param if available, "" otherwise
function in_request($name) {
	if (isset($_REQUEST[$name])) {
		return $_REQUEST[$name];
	}
	return "";
}

11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
# Format PGP key fingerprint
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);
}

29
# Display the standard Account form, pass in default values if any
30

eric's avatar
eric committed
31
function display_account_form($UTYPE,$A,$U="",$T="",$S="",
32
			$E="",$P="",$C="",$R="",$L="",$I="",$K="",$UID=0) {
eric's avatar
eric committed
33
	# UTYPE: what user type the form is being displayed for
34
35
36
37
38
39
40
41
42
43
44
	# A: what "form" name to use
	# U: value to display for username
	# T: value to display for account type
	# S: value to display for account suspended
	# E: value to display for email address
	# P: password value
	# C: confirm password value
	# R: value to display for RealName
	# L: value to display for Language preference
	# I: value to display for IRC nick
	# N: new package notify value
eric's avatar
eric committed
45
	# UID: Users.ID value in case form is used for editing
46
47
48

	global $SUPPORTED_LANGS;

49
	include("account_edit_form.php");
50
51
52
53
54
55
	return;
} # function display_account_form()


# process form input from a new/edit account form
#
eric's avatar
eric committed
56
function process_account_form($UTYPE,$TYPE,$A,$U="",$T="",$S="",$E="",
57
			$P="",$C="",$R="",$L="",$I="",$K="",$UID=0,$dbh=NULL) {
eric's avatar
eric committed
58
	# UTYPE: The user's account type
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
	# TYPE: either "edit" or "new"
	# A: what parent "form" name to use
	# U: value to display for username
	# T: value to display for account type
	# S: value to display for account suspended
	# E: value to display for email address
	# P: password value
	# C: confirm password value
	# R: value to display for RealName
	# L: value to display for Language preference
	# I: value to display for IRC nick
	# N: new package notify value
	# UID: database Users.ID value

	# error check and process request for a new/modified account
	global $SUPPORTED_LANGS;

76
77
78
	if (!$dbh) {
		$dbh = db_connect();
	}
79

80
	if(isset($_COOKIE['AURSID'])) {
81
		$editor_user = uid_from_sid($_COOKIE['AURSID'], $dbh);
82
83
	}
	else {
84
		$editor_user = null;
85
	}
86

87
	$error = "";
88
	if (empty($E) || empty($U)) {
89
90
		$error = __("Missing a required field.");
	}
91

92
93
94
	if ($TYPE == "new") {
		# they need password fields for this type of action
		#
95
		if (empty($P) || empty($C)) {
96
97
98
99
100
101
102
			$error = __("Missing a required field.");
		}
	} else {
		if (!$UID) {
			$error = __("Missing User ID");
		}
	}
103

104
  if (!$error && !valid_username($U) && !user_is_privileged($editor_user, $dbh))
105
	$error = __("The username is invalid.") . "<ul>\n"
106
			."<li>" . __("It must be between %s and %s characters long",
107
108
			USERNAME_MIN_LEN,  USERNAME_MAX_LEN )
			. "</li>"
109
			. "<li>" . __("Start and end with a letter or number") . "</li>"
110
			. "<li>" . __("Can contain only one period, underscore or hyphen.")
111
112
			. "</li>\n</ul>";

113
114
115
	if (!$error && $P && $C && ($P != $C)) {
		$error = __("Password fields do not match.");
	}
116
	if (!$error && $P != '' && !good_passwd($P))
117
		$error = __("Your password must be at least %s characters.",PASSWD_MIN_LEN);
118

119
120
121
	if (!$error && !valid_email($E)) {
		$error = __("The email address is invalid.");
	}
122
123
124
125
126

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

eric's avatar
eric committed
127
128
129
	if ($UTYPE == "Trusted User" && $T == 3) {
		$error = __("A Trusted User cannot assign Developer status.");
	}
130
131
132
133
134
135
136
137
	if (!$error && !array_key_exists($L, $SUPPORTED_LANGS)) {
		$error = __("Language is not currently supported.");
	}
	if (!$error) {
		# check to see if this username is available
		# NOTE: a race condition exists here if we care...
		#
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
138
		$q.= "WHERE Username = " . $dbh->quote($U);
eric's avatar
eric committed
139
140
141
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
142
143
144
145
146
147
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The username, %s%s%s, is already in use.",
				"<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
148
149
150
151
152
153
154
		}
	}
	if (!$error) {
		# check to see if this email address is available
		# NOTE: a race condition exists here if we care...
		#
		$q = "SELECT COUNT(*) AS CNT FROM Users ";
canyonknight's avatar
canyonknight committed
155
		$q.= "WHERE Email = " . $dbh->quote($E);
eric's avatar
eric committed
156
157
158
		if ($TYPE == "edit") {
			$q.= " AND ID != ".intval($UID);
		}
canyonknight's avatar
canyonknight committed
159
160
161
162
163
164
		$result = $dbh->query($q);
		$row = $result->fetch(PDO::FETCH_NUM);

		if ($row[0]) {
			$error = __("The address, %s%s%s, is already in use.",
					"<b>", htmlspecialchars($E,ENT_QUOTES), "</b>");
165
166
167
168
		}
	}
	if ($error) {
		print "<span class='error'>".$error."</span><br/>\n";
eric's avatar
eric committed
169
		display_account_form($UTYPE, $A, $U, $T, $S, $E, "", "",
170
				$R, $L, $I, $K, $UID);
171
172
173
	} else {
		if ($TYPE == "new") {
			# no errors, go ahead and create the unprivileged user
Denis's avatar
Denis committed
174
175
			$salt = generate_salt();
			$P = salted_hash($P, $salt);
canyonknight's avatar
canyonknight committed
176
177
178
179
180
181
182
183
184
185
186
187
188
			$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.= "Username, Email, Passwd, Salt, RealName, ";
			$q.= "LangPreference, IRCNick, PGPKey) VALUES (1, 0, ";
			$q.= "$U, $E, $P, $salt, $R, $L, $I, $K)";
			$result = $dbh->exec($q);
189
			if (!$result) {
canyonknight's avatar
canyonknight committed
190
191
				print __("Error trying to create account, %s%s%s.",
						"<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
192
			} else {
193
194
				# account created/modified, tell them so.
				#
195
				print __("The account, %s%s%s, has been successfully created.",
Viktor Leonhardt's avatar
Viktor Leonhardt committed
196
						"<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
197
				print "<p>\n";
198
				print __("Click on the Login link above to use your account.");
199
200
201
202
203
				print "</p>\n";
			}

		} else {
			# no errors, go ahead and modify the user account
jchu's avatar
jchu committed
204

205
			$q = "UPDATE Users SET ";
canyonknight's avatar
canyonknight committed
206
			$q.= "Username = " . $dbh->quote($U);
eric's avatar
eric committed
207
208
209
210
211
212
213
214
			if ($T) {
				$q.= ", AccountTypeID = ".intval($T);
			}
			if ($S) {
				$q.= ", Suspended = 1";
			} else {
				$q.= ", Suspended = 0";
			}
canyonknight's avatar
canyonknight committed
215
			$q.= ", Email = " . $dbh->quote($E);
eric's avatar
eric committed
216
			if ($P) {
Denis's avatar
Denis committed
217
218
219
				$salt = generate_salt();
				$hash = salted_hash($P, $salt);
				$q .= ", Passwd = '$hash', Salt = '$salt'";
eric's avatar
eric committed
220
			}
canyonknight's avatar
canyonknight committed
221
222
223
224
			$q.= ", RealName = " . $dbh->quote($R);
			$q.= ", LangPreference = " . $dbh->quote($L);
			$q.= ", IRCNick = " . $dbh->quote($I);
			$q.= ", PGPKey = " . $dbh->quote(str_replace(" ", "", $K));
225
			$q.= " WHERE ID = ".intval($UID);
canyonknight's avatar
canyonknight committed
226
			$result = $dbh->exec($q);
227
			if (!$result) {
canyonknight's avatar
canyonknight committed
228
229
				print __("Error trying to modify account, %s%s%s.",
						"<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
230
			} else {
231
				print __("The account, %s%s%s, has been successfully modified.",
Viktor Leonhardt's avatar
Viktor Leonhardt committed
232
						"<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
233
234
235
236
237
238
239
240
241
			}
		}
	}
	return;
}

# search existing accounts
#
function search_accounts_form() {
242
	include("search_accounts_form.php");
243
244
245
246
247
248
	return;
}


# search results page
#
eric's avatar
eric committed
249
function search_results_page($UTYPE,$O=0,$SB="",$U="",$T="",
250
		$S="",$E="",$R="",$I="",$K="",$dbh=NULL) {
eric's avatar
eric committed
251
	# UTYPE: what account type the user belongs to
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
	# O: what row offset we're at
	# SB: how to sort the results
	# U: value to display for username
	# T: value to display for account type
	# S: value to display for account suspended
	# E: value to display for email address
	# R: value to display for RealName
	# I: value to display for IRC nick

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

canyonknight's avatar
canyonknight committed
272
273
274
275
	if (!$dbh) {
		$dbh = db_connect();
	}

276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
	$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 ";
		$search_vars[] = "T";
	}
	if ($S) {
		$q.= "AND Users.Suspended = 1 ";
		$search_vars[] = "S";
	}
	if ($U) {
canyonknight's avatar
canyonknight committed
294
295
		$U = "%" . addcslashes($U, '%_') . "%";
		$q.= "AND Username LIKE " . $dbh->quote($U) . " ";
296
297
298
		$search_vars[] = "U";
	}
	if ($E) {
canyonknight's avatar
canyonknight committed
299
300
		$E = "%" . addcslashes($E, '%_') . "%";
		$q.= "AND Email LIKE " . $dbh->quote($E) . " ";
301
302
303
		$search_vars[] = "E";
	}
	if ($R) {
canyonknight's avatar
canyonknight committed
304
305
		$R = "%" . addcslashes($R, '%_') . "%";
		$q.= "AND RealName LIKE " . $dbh->quote($R) . " ";
306
307
308
		$search_vars[] = "R";
	}
	if ($I) {
canyonknight's avatar
canyonknight committed
309
310
		$I = "%" . addcslashes($I, '%_') . "%";
		$q.= "AND IRCNick LIKE " . $dbh->quote($I) . " ";
311
312
		$search_vars[] = "I";
	}
313
	if ($K) {
canyonknight's avatar
canyonknight committed
314
315
		$K = "%" . addcslashes(str_replace(" ", "", $K), '%_') . "%";
		$q.= "AND PGPKey LIKE " . $dbh->quote($K) . " ";
316
317
		$search_vars[] = "K";
	}
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
	switch ($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;
		case 'v':
			$q.= "ORDER BY LastVoted, Username ";
			break;
		default:
			$q.= "ORDER BY Username, AccountTypeID ";
			break;
	}
	$search_vars[] = "SB";
336
	$q.= "LIMIT " . $HITS_PER_PAGE . " OFFSET " . $OFFSET;
337

338
339
340
	if (!$dbh) {
		$dbh = db_connect();
	}
341

canyonknight's avatar
canyonknight committed
342
	$result = $dbh->query($q);
343

canyonknight's avatar
canyonknight committed
344
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
345
346
347
		$userinfo[] = $row;
	}

348
	include("account_search_results.php");
349
350
351
	return;
}

352
353
354
355
/*
 * Returns SID (Session ID) and error (error message) in an array
 * SID of 0 means login failed.
 */
356
function try_login($dbh=NULL) {
357
	global $MAX_SESSIONS_PER_USER, $PERSISTENT_COOKIE_TIMEOUT;
358

Loui Chang's avatar
Loui Chang committed
359
	$login_error = "";
360
361
362
363
	$new_sid = "";
	$userID = null;

	if ( isset($_REQUEST['user']) || isset($_REQUEST['passwd']) ) {
364
365
366
		if (!$dbh) {
			$dbh = db_connect();
		}
367
		$userID = valid_user($_REQUEST['user'], $dbh);
368

369
		if ( user_suspended($userID, $dbh) ) {
370
371
372
			$login_error = "Account Suspended.";
		}
		elseif ( $userID && isset($_REQUEST['passwd'])
373
		  && valid_passwd($userID, $_REQUEST['passwd'], $dbh) ) {
374
375
376
377
378
379
380

			$logged_in = 0;
			$num_tries = 0;

			# Account looks good.  Generate a SID and store it.

			while (!$logged_in && $num_tries < 5) {
381
382
383
384
385
				if ($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 ";
386
					$q.= "WHERE UsersId = " . $userID . " ";
387
388
389
					$q.= "ORDER BY LastUpdateTS DESC ";
					$q.= "LIMIT " . ($MAX_SESSIONS_PER_USER - 1) . ") q ";
					$q.= "ON s.SessionID = q.SessionID ";
390
					$q.= "WHERE s.UsersId = " . $userID . " ";
391
					$q.= "AND q.SessionID IS NULL;";
canyonknight's avatar
canyonknight committed
392
					$dbh->query($q);
393
394
				}

395
396
				$new_sid = new_sid();
				$q = "INSERT INTO Sessions (UsersID, SessionID, LastUpdateTS)"
397
				  ." VALUES (" . $userID . ", '" . $new_sid . "', UNIX_TIMESTAMP())";
canyonknight's avatar
canyonknight committed
398
				$result = $dbh->exec($q);
399

400
401
402
403
404
				# Query will fail if $new_sid is not unique
				if ($result) {
					$logged_in = 1;
					break;
				}
405

406
				$num_tries++;
407
			}
408

409
			if ($logged_in) {
410
411
				$q = "UPDATE Users SET LastLogin = UNIX_TIMESTAMP() ";
				$q.= "WHERE ID = '$userID'";
canyonknight's avatar
canyonknight committed
412
				$dbh->exec($q);
413

414
				# set our SID cookie
Dan McGee's avatar
Dan McGee committed
415
416
				if (isset($_POST['remember_me']) &&
					$_POST['remember_me'] == "on") {
417
					# Set cookies for 30 days.
418
					$cookie_time = time() + $PERSISTENT_COOKIE_TIMEOUT;
419
420
421
422

					# Set session for 30 days.
					$q = "UPDATE Sessions SET LastUpdateTS = $cookie_time ";
					$q.= "WHERE SessionID = '$new_sid'";
canyonknight's avatar
canyonknight committed
423
					$dbh->exec($q);
424
				}
425
426
				else
					$cookie_time = 0;
427

428
				setcookie("AURSID", $new_sid, $cookie_time, "/", null, !empty($_SERVER['HTTPS']), true);
429
				header("Location: " . get_uri('/'));
430
431
432
433
434
435
436
437
				$login_error = "";

			}
			else {
				$login_error = "Error trying to generate session id.";
			}
		}
		else {
438
			$login_error = __("Bad username or password.");
439
440
441
442
443
444
445
446
447
448
449
450
451
452
		}
	}
	return array('SID' => $new_sid, 'error' => $login_error);
}

/*
 * Only checks if the name itself is valid
 * Longer or equal to USERNAME_MIN_LEN
 * Shorter or equal to USERNAME_MAX_LEN
 * Starts and ends with a letter or number
 * Contains at most ONE dot, hyphen, or underscore
 * Returns the username if it is valid
 * Returns nothing if it isn't valid
 */
453
function valid_username($user) {
454
	if (!empty($user)) {
455

456
457
458
		#Is username at not too short or too long?
		if ( strlen($user) >= USERNAME_MIN_LEN &&
		  strlen($user) <= USERNAME_MAX_LEN ) {
459

460
			$user = strtolower($user);
461
			# Does username:
462
463
464
465
466
467
468
469
470
			# start and end with a letter or number
			# contain only letters and numbers,
			#  and at most has one dash, period, or underscore
			if ( preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/", $user) ) {
				#All is good return the username
				return $user;
			}
		}
	}
471

472
473
474
475
476
477
478
	return;
}

/*
 * Checks if the username is valid and if it exists in the database
 * Returns the username ID or nothing
 */
canyonknight's avatar
canyonknight committed
479
function valid_user($user, $dbh=NULL) {
480
	/*	if ( $user = valid_username($user) ) { */
canyonknight's avatar
canyonknight committed
481
482
483
484
485

	if(!$dbh) {
		$dbh = db_connect();
	}

486
	if ( $user ) {
canyonknight's avatar
canyonknight committed
487
488
		$q = "SELECT ID FROM Users ";
		$q.= "WHERE Username = " . $dbh->quote($user);
489

canyonknight's avatar
canyonknight committed
490
		$result = $dbh->query($q);
491
		# Is the username in the database?
492
		if ($result) {
canyonknight's avatar
canyonknight committed
493
			$row = $result->fetch(PDO::FETCH_NUM);
494
			return $row[0];
495
496
497
498
499
		}
	}
	return;
}

canyonknight's avatar
canyonknight committed
500
501
502
503
504
# Check for any open proposals about a user. Used to prevent multiple proposals.
function open_user_proposals($user, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}
canyonknight's avatar
canyonknight committed
505
506
507
508
	$q = "SELECT * FROM TU_VoteInfo WHERE User = " . $dbh->quote($user) . " ";
	$q.= "AND End > UNIX_TIMESTAMP()";
	$result = $dbh->query($q);
	if ($result->fetchColumn()) {
canyonknight's avatar
canyonknight committed
509
510
511
512
513
514
515
516
517
518
519
520
521
		return true;
	}
	else {
		return false;
	}
}

# Creates a new trusted user proposal from entered agenda.
# Optionally takes proposal about specific user. Length of vote set by submitter.
function add_tu_proposal($agenda, $user, $votelength, $submitteruid, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}
canyonknight's avatar
canyonknight committed
522

canyonknight's avatar
canyonknight committed
523
	$q = "INSERT INTO TU_VoteInfo (Agenda, User, Submitted, End, SubmitterID) VALUES ";
canyonknight's avatar
canyonknight committed
524
525
	$q.= "(" . $dbh->quote($agenda) . ", " . $dbh->quote($user) . ", ";
	$q.= "UNIX_TIMESTAMP(), UNIX_TIMESTAMP() + " . $dbh->quote($votelength);
canyonknight's avatar
canyonknight committed
526
	$q.= ", " . $submitteruid . ")";
canyonknight's avatar
canyonknight committed
527
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
528
529
}

canyonknight's avatar
canyonknight committed
530
531
532
533
534
535
536
537
# Add a reset key for a specific user
function create_resetkey($resetkey, $uid, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}
	$q = "UPDATE Users ";
	$q.= "SET ResetKey = '" . $resetkey . "' ";
	$q.= "WHERE ID = " . $uid;
canyonknight's avatar
canyonknight committed
538
	$dbh->exec($q);
canyonknight's avatar
canyonknight committed
539
540
541
542
543
544
545
546
547
548
549
550
}

# Change a password and save the salt only if reset key and email are correct
function password_reset($hash, $salt, $resetkey, $email, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}
	$q = "UPDATE Users ";
	$q.= "SET Passwd = '$hash', ";
	$q.= "Salt = '$salt', ";
	$q.= "ResetKey = '' ";
	$q.= "WHERE ResetKey != '' ";
canyonknight's avatar
canyonknight committed
551
552
553
	$q.= "AND ResetKey = " . $dbh->quote($resetkey) . " ";
	$q.= "AND Email = " . $dbh->quote($email);
	$result = $dbh->exec($q);
canyonknight's avatar
canyonknight committed
554

canyonknight's avatar
canyonknight committed
555
	if (!$result) {
canyonknight's avatar
canyonknight committed
556
557
558
		$error = __('Invalid e-mail and reset key combination.');
		return $error;
	} else {
559
		header('Location: ' . get_uri('/passreset/') . '?step=complete');
canyonknight's avatar
canyonknight committed
560
561
562
563
		exit();
	}
}

564
function good_passwd($passwd) {
565
566
567
568
569
570
571
572
573
	if ( strlen($passwd) >= PASSWD_MIN_LEN ) {
		return true;
	}
	return false;
}

/* Verifies that the password is correct for the userID specified.
 * Returns true or false
 */
574
575
576
577
function valid_passwd($userID, $passwd, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}
578
	if ( strlen($passwd) > 0 ) {
Denis's avatar
Denis committed
579
580
581
582
		# get salt for this user
		$salt = get_salt($userID);
		if ($salt) {
			# use salt
canyonknight's avatar
canyonknight committed
583
584
585
586
			$q = "SELECT ID FROM Users ";
			$q.= "WHERE ID = " . $userID . " ";
			$q.= "AND Passwd = " . $dbh->quote(salted_hash($passwd, $salt));
			$result = $dbh->query($q);
587
			if ($result) {
canyonknight's avatar
canyonknight committed
588
589
				$row = $result->fetch(PDO::FETCH_NUM);
				if ($row[0]) {
590
591
					return true;
				}
Denis's avatar
Denis committed
592
593
594
			}
		} else {
			# check without salt
canyonknight's avatar
canyonknight committed
595
596
597
598
			$q = "SELECT ID FROM Users ";
			$q.= "WHERE ID = " . $userID . " ";
			$q.= "AND Passwd = " . $dbh->quote(md5($passwd));
			$result = $dbh->query($q);
599
			if ($result) {
canyonknight's avatar
canyonknight committed
600
601
				$row = $result->fetch(PDO::FETCH_NUM);
				if ($row[0]) {
602
603
604
605
606
607
608
					# 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;
Denis's avatar
Denis committed
609
610
				}
			}
611
612
613
614
615
		}
	}
	return false;
}

616
617
618
/*
 * Checks if the PGP key fingerprint is valid (must be 40 hexadecimal digits).
 */
619
function valid_pgp_fingerprint($fingerprint) {
620
621
622
623
	$fingerprint = str_replace(" ", "", $fingerprint);
	return (strlen($fingerprint) == 40 && ctype_xdigit($fingerprint));
}

624
625
626
/*
 * Is the user account suspended?
 */
627
628
629
630
function user_suspended($id, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}
elij's avatar
elij committed
631
632
633
	if (!$id) {
		return false;
	}
634
	$q = "SELECT Suspended FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
635
	$result = $dbh->query($q);
636
	if ($result) {
canyonknight's avatar
canyonknight committed
637
		$row = $result->fetch(PDO::FETCH_NUM);
638
		if ($row[0]) {
639
640
			return true;
		}
641
642
643
644
645
646
647
	}
	return false;
}

/*
 * This should be expanded to return something
 */
648
649
650
651
function user_delete($id, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}
652
	$q = "DELETE FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
653
	$dbh->query($q);
654
655
656
657
658
659
660
	return;
}

/*
 * A different way of determining a user's privileges
 * rather than account_from_sid()
 */
661
662
663
664
function user_is_privileged($id, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}
665
	$q = "SELECT AccountTypeID FROM Users WHERE ID = " . $id;
canyonknight's avatar
canyonknight committed
666
	$result = $dbh->query($q);
667
	if ($result) {
canyonknight's avatar
canyonknight committed
668
		$row = $result->fetch(PDO::FETCH_NUM);
669
670
		if($row[0] > 1) {
			return $row[0];
671
		}
672
	}
673
674
675
676
	return 0;

}

canyonknight's avatar
canyonknight committed
677
678
679
680
681
682
# Remove session on logout
function delete_session_id($sid, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}

canyonknight's avatar
canyonknight committed
683
684
	$q = "DELETE FROM Sessions WHERE SessionID = " . $dbh->quote($sid);
	$dbh->query($q);
canyonknight's avatar
canyonknight committed
685
686
}

687
# Clear out old expired sessions.
canyonknight's avatar
canyonknight committed
688
function clear_expired_sessions($dbh=NULL) {
689
690
	global $LOGIN_TIMEOUT;

canyonknight's avatar
canyonknight committed
691
692
693
694
	if(!$dbh) {
		$dbh = db_connect();
	}

695
	$q = "DELETE FROM Sessions WHERE LastUpdateTS < (UNIX_TIMESTAMP() - $LOGIN_TIMEOUT)";
canyonknight's avatar
canyonknight committed
696
	$dbh->query($q);
697
698
699

	return;
}
700

canyonknight's avatar
canyonknight committed
701
702
703
704
705
706
707
708
709
710
function account_details($uid, $username, $dbh=NULL) {
	if(!$dbh) {
		$dbh = db_connect();
	}
	$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
711
		$q.= "AND Users.Username = " . $dbh->quote($username);
canyonknight's avatar
canyonknight committed
712
	}
canyonknight's avatar
canyonknight committed
713
	$result = $dbh->query($q);
canyonknight's avatar
canyonknight committed
714
715

	if ($result) {
canyonknight's avatar
canyonknight committed
716
		$row = $result->fetch(PDO::FETCH_ASSOC);
canyonknight's avatar
canyonknight committed
717
718
719
720
721
	}

	return $row;
}

722
723
724
725
726
function tu_voted($voteid, $uid, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

canyonknight's avatar
canyonknight committed
727
728
729
730
	$q = "SELECT COUNT(*) FROM TU_Votes ";
	$q.= "WHERE VoteID = " . intval($voteid) . " AND UserID = " . intval($uid);
	$result = $dbh->query($q);
	if ($result->fetchColumn() > 0) {
731
732
733
734
735
736
737
738
739
740
741
742
743
		return true;
	}
	else {
		return false;
	}
}

function current_proposal_list($order, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

	$q = "SELECT * FROM TU_VoteInfo WHERE End > " . time() . " ORDER BY Submitted " . $order;
canyonknight's avatar
canyonknight committed
744
	$result = $dbh->query($q);
745

746
	$details = array();
canyonknight's avatar
canyonknight committed
747
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
748
749
750
751
752
753
754
755
756
757
758
759
		$details[] = $row;
	}

	return $details;
}

function past_proposal_list($order, $lim, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

	$q = "SELECT * FROM TU_VoteInfo WHERE End < " . time() . " ORDER BY Submitted " . $order . $lim;
canyonknight's avatar
canyonknight committed
760
	$result = $dbh->query($q);
761

762
	$details = array();
canyonknight's avatar
canyonknight committed
763
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
764
765
766
767
768
769
770
771
772
773
774
775
		$details[] = $row;
	}

	return $details;
}

function proposal_count($dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

	$q = "SELECT COUNT(*) FROM TU_VoteInfo";
canyonknight's avatar
canyonknight committed
776
777
	$result = $dbh->query($q);
	$row = $result->fetch(PDO::FETCH_NUM);
778
779
780
781
782
783
784
785
786
787
788
789

	return $row[0];
}

function vote_details($voteid, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

	$q = "SELECT * FROM TU_VoteInfo ";
	$q.= "WHERE ID = " . intval($voteid);

canyonknight's avatar
canyonknight committed
790
791
	$result = $dbh->query($q);
	$row = $result->fetch(PDO::FETCH_ASSOC);
792
793
794
795
796
797
798
799
800

	return $row;
}

function voter_list($voteid, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

801
802
	$whovoted = '';

803
804
805
806
807
808
	$q = "SELECT tv.UserID,U.Username ";
	$q.= "FROM TU_Votes tv, Users U ";
	$q.= "WHERE tv.VoteID = " . intval($voteid);
	$q.= " AND tv.UserID = U.ID ";
	$q.= "ORDER BY Username";

canyonknight's avatar
canyonknight committed
809
	$result = $dbh->query($q);
810
	if ($result) {
canyonknight's avatar
canyonknight committed
811
		while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
812
			$whovoted.= '<a href="' . get_user_uri($row['Username']) . '">'.$row['Username'].'</a> ';
813
814
815
816
817
818
819
820
821
822
		}
	}
	return $whovoted;
}

function cast_proposal_vote($voteid, $uid, $vote, $newtotal, $dbh=NULL) {
	if (!$dbh) {
		$dbh = db_connect();
	}

canyonknight's avatar
canyonknight committed
823
824
	$q = "UPDATE TU_VoteInfo SET " . $vote . " = (" . $newtotal . ") WHERE ID = " . $voteid;
	$result = $dbh->exec($q);
825

canyonknight's avatar
canyonknight committed
826
827
	$q = "INSERT INTO TU_Votes (VoteID, UserID) VALUES (" . intval($voteid) . ", " . intval($uid) . ")";
	$result = $dbh->exec($q);
828
}