1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
<?php
/***************************************************************************
* functions_validate.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id$
*
*
***************************************************************************/
/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*
***************************************************************************/
//
// Check to see if the username has been taken, or if it is disallowed.
// Also checks if it includes the " character, which we don't allow in usernames.
// Used for registering, changing names, and posting anonymously with a username
//
function validate_username($username)
{
global $db, $lang, $userdata;
$username = str_replace("\'", "''", $username);
$sql = "SELECT username
FROM " . USERS_TABLE . "
WHERE LOWER(username) = '" . strtolower($username) . "'";
if ( $result = $db->sql_query($sql) )
{
if ( $row = $db->sql_fetchrow($result) )
{
if ( ( $userdata['session_logged_in'] && $row['username'] != $userdata['username'] ) || !$userdata['session_logged_in'] )
{
return array('error' => true, 'error_msg' => $lang['Username_taken']);
}
}
}
$sql = "SELECT group_name
FROM " . GROUPS_TABLE . "
WHERE LOWER(group_name) = '" . strtolower($username) . "'";
if ( $result = $db->sql_query($sql) )
{
if ( $row = $db->sql_fetchrow($result) )
{
return array('error' => true, 'error_msg' => $lang['Username_taken']);
}
}
$sql = "SELECT disallow_username
FROM " . DISALLOW_TABLE;
if ( $result = $db->sql_query($sql) )
{
while( $row = $db->sql_fetchrow($result) )
{
if ( preg_match("#\b(" . str_replace("\*", "\w*?", preg_quote($row['disallow_username'])) . ")\b#i", $username) )
{
return array('error' => true, 'error_msg' => $lang['Username_disallowed']);
}
}
}
$sql = "SELECT word
FROM " . WORDS_TABLE;
if ( $result = $db->sql_query($sql) )
{
while( $row = $db->sql_fetchrow($result) )
{
if ( preg_match("#\b(" . str_replace("\*", "\w*?", preg_quote($row['word'])) . ")\b#i", $username) )
{
return array('error' => true, 'error_msg' => $lang['Username_disallowed']);
}
}
}
// Don't allow " in username.
if ( strstr($username, '"') )
{
return array('error' => true, 'error_msg' => $lang['Username_invalid']);
}
return array('error' => false, 'error_msg' => '');
}
//
// Check to see if email address is banned
// or already present in the DB
//
function validate_email($email)
{
global $db, $lang;
if ( $email != '' )
{
if ( preg_match('/^[a-z0-9\.\-_]+@[a-z0-9\-_]+\.([a-z0-9\-_]+\.)*?[a-z]+$/is', $email) )
{
$sql = "SELECT ban_email
FROM " . BANLIST_TABLE;
if ( $result = $db->sql_query($sql) )
{
while( $row = $db->sql_fetchrow($result) )
{
$match_email = str_replace('*', '.*', $row['ban_email']);
if ( preg_match('/^' . $match_email . '$/is', $email) )
{
return array('error' => true, 'error_msg' => $lang['Email_banned']);
}
}
}
$sql = "SELECT user_email
FROM " . USERS_TABLE . "
WHERE user_email = '" . str_replace("\'", "''", $email) . "'";
if ( !($result = $db->sql_query($sql)) )
{
message_die(GENERAL_ERROR, "Couldn't obtain user email information.", "", __LINE__, __FILE__, $sql);
}
if ( $row = $db->sql_fetchrow($result) )
{
return array('error' => true, 'error_msg' => $lang['Email_taken']);
}
return array('error' => false, 'error_msg' => '');
}
}
return array('error' => true, 'error_msg' => $lang['Email_invalid']);
}
//
// Does supplementary validation of optional profile fields. This expects common stuff like trim() and strip_tags()
// to have already been run. Params are passed by-ref, so we can set them to the empty string if they fail.
//
function validate_optional_fields(&$icq, &$aim, &$msnm, &$yim, &$website, &$location, &$occupation, &$interests, &$sig)
{
$check_var_length = array('aim', 'msnm', 'yim', 'location', 'occupation', 'interests', 'sig');
for($i = 0; $i < count($check_var_length); $i++)
{
if ( strlen($$check_var_length[$i]) < 2 )
{
$$check_var_length[$i] = '';
}
}
// ICQ number has to be only numbers.
if ( !preg_match('/^[0-9]+$/', $icq) )
{
$icq = '';
}
// website has to start with http://, followed by something with length at least 3 that
// contains at least one dot.
if ( $website != "" )
{
if ( !preg_match('#^http:\/\/#i', $website) )
{
$website = 'http://' . $website;
}
if ( !preg_match('#^http\\:\\/\\/[a-z0-9\-]+\.([a-z0-9\-]+\.)?[a-z]+#i', $website) )
{
$website = '';
}
}
return;
}
?>
|
