loginizer / functions.php

functions.php in Loginizer 1.2.0, at functions.php

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1	<?php
2
3	// Get the client IP
4	function lz_getip(){
5	if(isset($_SERVER["REMOTE_ADDR"])){
6	return $_SERVER["REMOTE_ADDR"];
7	}elseif(isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
8	return $_SERVER["HTTP_X_FORWARDED_FOR"];
9	}elseif(isset($_SERVER["HTTP_CLIENT_IP"])){
10	return $_SERVER["HTTP_CLIENT_IP"];
11	}
12	}
13
14	// Execute a select query and return an array
15	function lz_selectquery($query, $array = 0){
16	global $wpdb;
17
18	$result = $wpdb->get_results($query, 'ARRAY_A');
19
20	if(empty($array)){
21	return current($result);
22	}else{
23	return $result;
24	}
25	}
26
27	// Check if an IP is valid
28	function lz_valid_ip($ip){
29
30	if(!ip2long($ip)){
31	return false;
32	}
33	return true;
34	}
35
36	// Check if a field is posted via POST else return default value
37	function lz_optpost($name, $default = ''){
38
39	if(!empty($_POST[$name])){
40	return lz_inputsec(lz_htmlizer(trim($_POST[$name])));
41	}
42
43	return $default;
44	}
45
46	// Check if a field is posted via GET else return default value
47	function lz_optget($name, $default = ''){
48
49	if(!empty($_GET[$name])){
50	return lz_inputsec(lz_htmlizer(trim($_GET[$name])));
51	}
52
53	return $default;
54	}
55
56	// Check if a field is posted via GET or POST else return default value
57	function lz_optreq($name, $default = ''){
58
59	if(!empty($_REQUEST[$name])){
60	return lz_inputsec(lz_htmlizer(trim($_REQUEST[$name])));
61	}
62
63	return $default;
64	}
65
66	// For filling in posted values
67	function lz_POSTval($name, $default = ''){
68
69	return (!empty($_POST) ? (!isset($_POST[$name]) ? '' : $_POST[$name]) : $default);
70
71	}
72
73	function lz_POSTchecked($name, $default = false){
74
75	return (!empty($_POST) ? (isset($_POST[$name]) ? 'checked="checked"' : '') : (!empty($default) ? 'checked="checked"' : ''));
76
77	}
78
79	function lz_POSTselect($name, $value, $default = false){
80
81	if(empty($_POST)){
82	if(!empty($default)){
83	return 'selected="selected"';
84	}
85	}else{
86	if(isset($_POST[$name])){
87	if(trim($_POST[$name]) == $value){
88	return 'selected="selected"';
89	}
90	}
91	}
92
93	}
94
95	function lz_inputsec($string){
96
97	if(!get_magic_quotes_gpc()){
98
99	$string = addslashes($string);
100
101	}else{
102
103	$string = stripslashes($string);
104	$string = addslashes($string);
105
106	}
107
108	// This is to replace ` which can cause the command to be executed in exec()
109	$string = str_replace('`', '\`', $string);
110
111	return $string;
112
113	}
114
115	function lz_htmlizer($string){
116
117	$string = htmlentities($string, ENT_QUOTES, 'UTF-8');
118
119	preg_match_all('/(&#(\d{1,7}\|x[0-9a-fA-F]{1,6});)/', $string, $matches);//r_print($matches);
120
121	foreach($matches[1] as $mk => $mv){
122	$tmp_m = lz_entity_check($matches[2][$mk]);
123	$string = str_replace($matches[1][$mk], $tmp_m, $string);
124	}
125
126	return $string;
127
128	}
129
130	function lz_entity_check($string){
131
132	//Convert Hexadecimal to Decimal
133	$num = ((substr($string, 0, 1) === 'x') ? hexdec(substr($string, 1)) : (int) $string);
134
135	//Squares and Spaces - return nothing
136	$string = (($num > 0x10FFFF \|\| ($num >= 0xD800 && $num <= 0xDFFF) \|\| $num < 0x20) ? '' : '&#'.$num.';');
137
138	return $string;
139
140	}
141
142	// Check if a checkbox is selected
143	function lz_is_checked($post){
144
145	if(!empty($_POST[$post])){
146	return true;
147	}
148	return false;
149	}
150
151	// Reoort an error
152	function lz_report_error($error = array()){
153
154	if(empty($error)){
155	return true;
156	}
157
158	$error_string = '<b>Please fix the below error(s) :</b> <br />';
159
160	foreach($error as $ek => $ev){
161	$error_string .= '* '.$ev.'<br />';
162	}
163
164	echo '<div id="message" class="error"><p>'
165	. __($error_string, 'loginizer')
166	. '</p></div>';
167	}
168
169	// Report a notice
170	function lz_report_notice($notice = array()){
171
172	global $wp_version;
173
174	if(empty($notice)){
175	return true;
176	}
177
178	// Which class do we have to use ?
179	if(version_compare($wp_version, '3.8', '<')){
180	$notice_class = 'updated';
181	}else{
182	$notice_class = 'updated';
183	}
184
185	$notice_string = '<b>Please check the below notice(s) :</b> <br />';
186
187	foreach($notice as $ek => $ev){
188	$notice_string .= '* '.$ev.'<br />';
189	}
190
191	echo '<div id="message" class="'.$notice_class.'"><p>'
192	. __($notice_string, 'loginizer')
193	. '</p></div>';
194	}
195
196	// Convert an objext to array
197	function lz_objectToArray($d){
198
199	if(is_object($d)){
200	$d = get_object_vars($d);
201	}
202
203	if(is_array($d)){
204	return array_map(__FUNCTION__, $d); // recursive
205	}elseif(is_object($d)){
206	return lz_objectToArray($d);
207	}else{
208	return $d;
209	}
210	}
211
212	// Sanitize variables
213	function lz_sanitize_variables($variables = array()){
214
215	if(is_array($variables)){
216	foreach($variables as $k => $v){
217	$variables[$k] = trim($v);
218	$variables[$k] = escapeshellcmd($v);
219	}
220	}else{
221	$variables = escapeshellcmd(trim($variables));
222	}
223
224	return $variables;
225	}
226
227	// Is multisite ?
228	function lz_is_multisite() {
229
230	if(function_exists('get_site_option') && function_exists('is_multisite') && is_multisite()){
231	return true;
232	}
233
234	return false;
235	}
236
237	// Generate a random string
238	function lz_RandomString($length = 10){
239	$characters = '0123456789abcdefghijklmnopqrstuvwxyz';
240	$charactersLength = strlen($characters);
241	$randomString = '';
242	for($i = 0; $i < $length; $i++){
243	$randomString .= $characters[rand(0, $charactersLength - 1)];
244	}
245	return $randomString;
246	}
247
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