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
|
<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2011 Bharat Mediratta
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* This is the API for handling users.
*
* Note: by design, this class does not do any permission checking.
*/
class user_Core {
/**
* Return the guest user.
*
* @todo consider caching
*
* @return User_Model
*/
static function guest() {
return model_cache::get("user", 1);
}
/**
* Return an admin user. Prefer the currently logged in user, if possible.
*
* @return User_Model
*/
static function admin_user() {
$active = identity::active_user();
if ($active->admin) {
return $active;
}
return ORM::factory("user")->where("admin", "=", 1)->order_by("id", "ASC")->find();
}
/**
* Is the password provided correct?
*
* @param user User Model
* @param string $password a plaintext password
* @return boolean true if the password is correct
*/
static function is_correct_password($user, $password) {
$valid = $user->password;
// Try phpass first, since that's what we generate.
if (strlen($valid) == 34) {
require_once(MODPATH . "user/lib/PasswordHash.php");
$hashGenerator = new PasswordHash(10, true);
return $hashGenerator->CheckPassword($password, $valid);
}
$salt = substr($valid, 0, 4);
// Support both old (G1 thru 1.4.0; G2 thru alpha-4) and new password schemes:
$guess = (strlen($valid) == 32) ? md5($password) : ($salt . md5($salt . $password));
if (!strcmp($guess, $valid)) {
return true;
}
// Passwords with <&"> created by G2 prior to 2.1 were hashed with entities
$sanitizedPassword = html::chars($password, false);
$guess = (strlen($valid) == 32) ? md5($sanitizedPassword)
: ($salt . md5($salt . $sanitizedPassword));
if (!strcmp($guess, $valid)) {
return true;
}
return false;
}
static function valid_password($password_input) {
if (!user::is_correct_password(identity::active_user(), $password_input->value)) {
$password_input->add_error("invalid_password", 1);
}
}
static function valid_username($text_input) {
if (!self::lookup_by_name($text_input->value)) {
$text_input->add_error("invalid_username", 1);
}
}
/**
* Create the hashed passwords.
* @param string $password a plaintext password
* @return string hashed password
*/
static function hash_password($password) {
require_once(MODPATH . "user/lib/PasswordHash.php");
$hashGenerator = new PasswordHash(10, true);
return $hashGenerator->HashPassword($password);
}
/**
* Look up a user by id.
* @param integer $id the user id
* @return User_Model the user object, or null if the id was invalid.
*/
static function lookup($id) {
return self::_lookup_user_by_field("id", $id);
}
/**
* Look up a user by name.
* @param integer $name the user name
* @return User_Model the user object, or null if the name was invalid.
*/
static function lookup_by_name($name) {
return self::_lookup_user_by_field("name", $name);
}
/**
* Look up a user by hash.
* @param integer $hash the user hash value
* @return User_Model the user object, or null if the name was invalid.
*/
static function lookup_by_hash($hash) {
return self::_lookup_user_by_field("hash", $hash);
}
/**
* List the users
* @param mixed filters (@see Database.php
* @return array the user list.
*/
static function get_user_list($filter=array()) {
$user = ORM::factory("user");
foreach($filter as $method => $args) {
switch ($method) {
case "in":
$user->in($args[0], $args[1]);
break;
default:
$user->$method($args);
}
}
return $user->find_all();
}
/**
* Look up a user by field value.
* @param string search field
* @param string search value
* @return User_Core the user object, or null if the name was invalid.
*/
private static function _lookup_user_by_field($field_name, $value) {
try {
$user = model_cache::get("user", $value, $field_name);
if ($user->loaded()) {
return $user;
}
} catch (Exception $e) {
if (strpos($e->getMessage(), "MISSING_MODEL") === false) {
throw $e;
}
}
return null;
}
}
|
