siteguard-base.php — SiteGuard WP Plugin 1.8.8

siteguard / classes / siteguard-base.php

siteguard / classes Last commit date

siteguard-base.php

156 lines

1	<?php
2
3	function siteguard_error_log( $message ) {
4	// Use PHP's error_log() so logs go to the server-configured destination
5	// (typically outside the web root) instead of a plugin-directory file
6	// that would be exposed on Nginx (no .htaccess support).
7	error_log( '[SiteGuard] ' . $message );
8	}
9
10	function siteguard_error_dump( $title, $obj ) {
11	ob_start();
12	var_dump( $obj );
13	$msg = ob_get_contents();
14	ob_end_clean();
15	siteguard_error_log( "$title: $msg" );
16	}
17
18	function siteguard_rand( $min = null, $max = null ) {
19	$ret = 0;
20	if ( $min === null or $max === null ) {
21	$ret = mt_rand();
22	} else {
23	$ret = mt_rand( $min, $max );
24	}
25	return $ret;
26	}
27
28	/**
29	* Whether the current request is the plugin's own .htaccess self-test request.
30	*
31	* The self-test asks the server for a file inside a temporary directory under
32	* ABSPATH. When that file cannot be served — the directory was already removed,
33	* or the rewrite under test is ignored — the request falls through to
34	* WordPress, which boots the plugin as usual. Such a request must not perform
35	* any .htaccess bookkeeping of its own: the run that issued it is in the middle
36	* of rebuilding the very state it would inspect, and re-entering upgrade() from
37	* here starts another self-test, and another WordPress boot, and so on.
38	*
39	* @return bool
40	*/
41	function siteguard_is_self_test_request() {
42	if ( ! isset( $_SERVER['REQUEST_URI'] ) ) {
43	return false;
44	}
45	return ( false !== strpos( (string) $_SERVER['REQUEST_URI'], SiteGuard_Htaccess::TEST_DIR_PREFIX ) );
46	}
47
48	function siteguard_check_multisite() {
49	if ( ! is_multisite() ) {
50	return true;
51	}
52	$message = esc_html__( 'This plugin does not support WordPress multisite.', 'siteguard' );
53	$error = new WP_Error( 'siteguard', $message );
54	return $error;
55	}
56
57	class SiteGuard_Base {
58	function __construct() {
59	}
60	function is_switch_value( $value ) {
61	if ( '0' === $value \|\| '1' === $value ) {
62	return true;
63	}
64	return false;
65	}
66	function cvt_camma2ret( $value ) {
67	$result = str_replace( ' ', '', $value );
68	return str_replace( ',', "\r\n", $result );
69	}
70	function cvt_ret2camma( $exclude ) {
71	$result = str_replace( ' ', '', $exclude );
72	$result = str_replace( ',', '', $result );
73	$result = preg_replace( '/(\r\n){2,}/', "\r\n", $result );
74	$result = preg_replace( '/\r\n$/', '', $result );
75	$result = str_replace( "\r\n", ',', $result );
76	$result = str_replace( "\r", ',', $result );
77	return str_replace( "\n", ',', $result );
78	}
79	function check_module( $name, $default = false ) {
80	return true;
81	// It does not work WP-CLI
82	// if ( isset( $_SERVER['SERVER_SOFTWARE'] ) ) {
83	// return ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Apache' ) !== false \|\| strpos( $_SERVER['SERVER_SOFTWARE'], 'LiteSpeed' ) !== false);
84	// } else {
85	// return $default;
86	// }
87
88	// It does not work in FastCGI well.
89	// $module = 'mod_' . $name;
90	// return apache_mod_loaded( $module, $default );
91	// if ( function_exists('phpinfo') ) {
92	// ob_start( );
93	// phpinfo(8);
94	// $phpinfo = ob_get_clean( );
95	// if ( false !== strpos( $phpinfo, $module ) ) {
96	// return true;
97	// }
98	// }
99	// return $default;
100	}
101	function is_private_ip( $ip ) {
102	$private_ips = array(
103	'10.0.0.0,10.255.255.255',
104	'172.16.0.0,172.31.255.255',
105	'192.168.0.0,192.168.255.255',
106	);
107
108	$long_ip = ip2long( $ip );
109	if ( -1 !== $long_ip && false !== $long_ip ) {
110	$long_ip = sprintf( '%u', $long_ip );
111	foreach ( $private_ips as $private_ip ) {
112	list( $start, $end ) = explode( ',', $private_ip );
113	$long_start = ip2long( $start );
114	$long_start = sprintf( '%u', $long_start );
115	$long_end = ip2long( $end );
116	$long_end = sprintf( '%u', $long_end );
117	if ( $long_ip >= $long_start && $long_ip <= $long_end ) {
118	return true;
119	}
120	}
121	}
122	return false;
123	}
124	function get_server_ip() {
125	if ( isset( $_SERVER['SERVER_ADDR'] ) ) {
126	$ip = sanitize_text_field( $_SERVER['SERVER_ADDR'] );
127	if ( preg_match( '/^[0-9.:]+$/', $ip ) ) {
128	return $ip;
129	}
130	}
131
132	$host = parse_url( home_url(), PHP_URL_HOST );
133	if ( false !== $host && null !== $host ) {
134	putenv( 'RES_OPTIONS=retrans:1 retry:1 timeout:2 attempts:1' );
135	$ip = @gethostbyname( $host );
136	if ( $ip !== $host && '127.0.0.1' !== $ip && '::1' !== $ip ) {
137	if ( preg_match( '/^[0-9.:]+$/', $ip ) ) {
138	return $ip;
139	}
140	}
141	}
142	return false;
143	}
144	function get_ip() {
145	if (
146	! isset( $_SERVER['REMOTE_ADDR'] )
147	\|\| ! is_string( $_SERVER['REMOTE_ADDR'] )
148	\|\| '' === $_SERVER['REMOTE_ADDR']
149	) {
150	siteguard_error_log( 'Your webserver is misconfigured. REMOTE_ADDR is not set.' );
151	return '0.0.0.0';
152	}
153	return sanitize_text_field( $_SERVER['REMOTE_ADDR'] );
154	}
155	}
156