s2member / src / includes / classes / utils-s2o.inc.php

utils-s2o.inc.php in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions 260805, at src/includes/classes/utils-s2o.inc.php

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1	<?php
2	// @codingStandardsIgnoreFile
3	/**
4	* s2Member-only utilities.
5	*
6	* Copyright: © 2009-2011
7	* {@link http://websharks-inc.com/ WebSharks, Inc.}
8	* (coded in the USA)
9	*
10	* Released under the terms of the GNU General Public License.
11	* You should have received a copy of the GNU General Public License,
12	* along with this software. In the main directory, see: /licensing/
13	* If not, see: {@link http://www.gnu.org/licenses/}.
14	*
15	* @package s2Member\Utilities
16	* @since 110912
17	*/
18	if(!class_exists('c_ws_plugin__s2member_utils_s2o'))
19	{
20	/**
21	* s2Member-only utilities.
22	*
23	* @package s2Member\Utilities
24	* @since 110912
25	*/
26	class c_ws_plugin__s2member_utils_s2o
27	{
28	/**
29	* WordPress directory.
30	*
31	* @package s2Member\Utilities
32	* @since 110912
33	*
34	* @param string $starting_dir A directory to start searching from.
35	* @param string $alt_starting_dir An alternate directory to search from.
36	*
37	* @return string\|null WordPress directory, else exits script execution on failure.
38	*/
39	public static function wp_dir($starting_dir = '', $alt_starting_dir = '')
40	{
41	if(!empty($_SERVER['WP_DIR']))
42	return (string)$_SERVER['WP_DIR'];
43
44	foreach(array($starting_dir, $alt_starting_dir, $_SERVER['DOCUMENT_ROOT']) as $_directory)
45	if($_directory && is_string($_directory) && is_dir($_directory))
46	for($_i = 0, $_dir = $_directory; $_i <= 20; $_i++, $_dir = dirname($_dir))
47	if(file_exists($_dir.'/wp-settings.php'))
48	return ($wp_dir = $_dir);
49
50	header('HTTP/1.0 500 Error');
51	header('Content-Type: text/plain; charset=UTF-8');
52
53	while(@ob_end_clean()) ; // Clean any existing output buffers.
54	exit ('ERROR: s2Member unable to locate WordPress directory.');
55	}
56
57	/**
58	* WordPress settings, after ``SHORTINIT`` section.
59	*
60	* @package s2Member\Utilities
61	* @since 110912
62	*
63	* @param string $wp_dir WordPress directory path.
64	* @param string $o_file Location of calling `*-o.php` file.
65	*
66	* @return string\|bool WordPress settings, else false on failure.
67	*/
68	public static function wp_settings_as($wp_dir = '', $o_file = '')
69	{
70	if($wp_dir && is_dir($wp_dir) && is_readable($wp_settings = $wp_dir.'/wp-settings.php') && $o_file && is_file($o_file) && ($_wp_settings = trim(file_get_contents($wp_settings))))
71	{
72	$wp_shortinit_section = '/if\s$\sSHORTINIT\s$['."\r\n\t".'\s]\{?['."\r\n\t".'\s]return\s+false;['."\r\n\t".'\s]\}?['."\r\n\t".'\s]*/'; // Run ``preg_match()`` to confirm existence.
73	if(preg_match($wp_shortinit_section, $_wp_settings) && ($_wp_settings_parts = preg_split($wp_shortinit_section, $_wp_settings, 2)) && ($_wp_settings = trim($_wp_settings_parts[1])) && ($_wp_settings = '<?php'."\n".$_wp_settings))
74	{
75	if(($_wp_settings = str_replace('__FILE__', "'".str_replace("'", "'", $wp_settings)."'", $_wp_settings))) // Eval compatible. Hard-code the ``__FILE__`` location here.
76	{
77	$mu_plugins_section = '/['."\r\n\t".'\s]+foreach\s$\swp_get_mu_plugins\s\(\s$\sas\s\$mu_plugin\s\)['."\r\n\t".'\s]\{?['."\r\n\t".'\s]include_once\s$\s\$mu_plugin\s$\s;['."\r\n\t".'\s]\}?['."\r\n\t".'\s]unset\s$\s\$mu_plugin\s$\s*;/';
78	$mu_plugins_replace = "\n\n".c_ws_plugin__s2member_utils_s2o::esc_ds(trim(c_ws_plugin__s2member_utils_s2o::evl(file_get_contents(dirname(dirname(__FILE__)).'/templates/cfg-files/s2o-mu-plugins.php'))))."\n";
79	if(($_wp_settings = preg_replace($mu_plugins_section, $mu_plugins_replace, $_wp_settings, 1, $mu_plugins_replaced)) && $mu_plugins_replaced)
80	{
81	$nw_plugins_section = '/['."\r\n\t".'\s]+foreach\s$\swp_get_active_network_plugins\s\(\s$\sas\s\$network_plugin\s\)['."\r\n\t".'\s]\{?['."\r\n\t".'\s]wp_register_plugin_realpath\s$\s\$network_plugin\s$\s;['."\r\n\t".'\s]include_once\s$\s\$network_plugin\s$\s;['."\r\n\t".'\s]\}?['."\r\n\t".'\s]unset\s$\s\$network_plugin\s$\s;/';
82	$nw_plugins_replace = "\n\n".c_ws_plugin__s2member_utils_s2o::esc_ds(trim(c_ws_plugin__s2member_utils_s2o::evl(file_get_contents(dirname(dirname(__FILE__)).'/templates/cfg-files/s2o-nw-plugins.php'))))."\n";
83	if(($_wp_settings = preg_replace($nw_plugins_section, $nw_plugins_replace, $_wp_settings, 1, $nw_plugins_replaced)) && $nw_plugins_replaced)
84	{
85	$st_plugins_section = '/['."\r\n\t".'\s]+foreach\s$\swp_get_active_and_valid_plugins\s\(\s$\sas\s\$plugin\s\)['."\r\n\t".'\s]\{?['."\r\n\t".'\s]wp_register_plugin_realpath\s$\s\$plugin\s$\s;['."\r\n\t".'\s]include_once\s$\s\$plugin\s$\s;['."\r\n\t".'\s]\}?['."\r\n\t".'\s ]unset\s$\s\$plugin\s$\s;/';
86	$st_plugins_replace = "\n\n".c_ws_plugin__s2member_utils_s2o::esc_ds(trim(c_ws_plugin__s2member_utils_s2o::evl(file_get_contents(dirname(dirname(__FILE__)).'/templates/cfg-files/s2o-st-plugins.php'))))."\n";
87	if(($_wp_settings = preg_replace($st_plugins_section, $st_plugins_replace, $_wp_settings, 1, $st_plugins_replaced)) && $st_plugins_replaced)
88	{
89	$th_funcs_section = '/['."\r\n\t".'\s]+if\s$\s\!\sdefined\s\(\s[\'"]WP_INSTALLING[\'"]\s$\s\\|\\|\s[\'"]wp\-activate\.php[\'"]\s\=\=\=\s\$pagenow\s\)['."\r\n\t".'\s]\{['."\r\n\t".'\s]if\s$\sTEMPLATEPATH\s\!\=\=\sSTYLESHEETPATH\s&&\sfile_exists\s\(\sSTYLESHEETPATH\s\.\s[\'"]\/functions\.php[\'"]\s$\s\)['."\r\n\t".'\s]\{?['."\r\n\t".'\s]include\s$\sSTYLESHEETPATH\s\.\s[\'"]\/functions\.php[\'"]\s$;['."\r\n\t".'\s]\}?['."\r\n\t".'\s]if\s$\sfile_exists\s\(\sTEMPLATEPATH\s\.\s[\'"]\/functions\.php[\'"]\s$\s\)['."\r\n\t".'\s]\{?['."\r\n\t".'\s]include\s$\sTEMPLATEPATH\s\.\s[\'"]\/functions\.php[\'"]\s$;['."\r\n\t".'\s]\}?['."\r\n\t".'\s]*\}/';
90	$th_funcs_replace = "\n\n".c_ws_plugin__s2member_utils_s2o::esc_ds(trim(c_ws_plugin__s2member_utils_s2o::evl(file_get_contents(dirname(dirname(__FILE__)).'/templates/cfg-files/s2o-th-funcs.php'))))."\n";
91	if(($_wp_settings = preg_replace($th_funcs_section, $th_funcs_replace, $_wp_settings, 1, $th_funcs_replaced)) && $th_funcs_replaced)
92	{
93	if(($_wp_settings = str_replace('__FILE__', '"'.str_replace('"', '\"', $o_file).'"', $_wp_settings))) // Eval compatible.
94	{
95	if(($_wp_settings = trim($_wp_settings))) // WordPress, with s2Member only.
96	return ($wp_settings_as = $_wp_settings); // After ``SHORTINIT``.
97	}
98	}
99	}
100	}
101	}
102	}
103	}
104	}
105	return FALSE;
106	}
107
108	/**
109	* Escapes dollars signs (for regex patterns).
110	*
111	* @package s2Member\Utilities
112	* @since 110917
113	*
114	* @param string $string Input string.
115	* @param int $times Mumber of escapes. Defaults to 1.
116	*
117	* @return string Output string after dollar signs are escaped.
118	*/
119	public static function esc_ds($string = '', $times = 0)
120	{
121	$times = is_numeric($times) && $times >= 0 ? (int)$times : 1;
122	return str_replace('$', str_repeat('\\', $times).'$', (string)$string);
123	}
124
125	/**
126	* Evaluates PHP code, and 'returns' output.
127	*
128	* @package s2Member\Utilities
129	* @since 110917
130	*
131	* @param string $code A string of data, possibly with embedded PHP code.
132	*
133	* @return string Output after PHP evaluation.
134	*/
135	public static function evl($code = '')
136	{
137	ob_start(); // Output buffer.
138
139	eval ('?>'.trim($code));
140
141	return ob_get_clean();
142	}
143	}
144	}
145