defender-security / vendor / thecodingmachine / safe / lib / special_cases.php

special_cases.php in Defender Security – Malware Scanner, Login Security & Firewall 5.8.1, at vendor/thecodingmachine/safe/lib/special_cases.php

243 lines 8.3 KB

Raw Download Zip

1	<?php
2	/**
3	* This file contains all the functions that could not be dealt with automatically using the code generator.
4	* If you add a function in this list, do not forget to add it in the generator/config/specialCasesFunctions.php
5	*
6	*/
7
8	namespace Safe;
9
10	use Safe\Exceptions\SocketsException;
11	use const PREG_NO_ERROR;
12	use Safe\Exceptions\ApcException;
13	use Safe\Exceptions\ApcuException;
14	use Safe\Exceptions\JsonException;
15	use Safe\Exceptions\OpensslException;
16	use Safe\Exceptions\PcreException;
17
18	/**
19	* Wrapper for json_decode that throws when an error occurs.
20	*
21	* @param string $json JSON data to parse
22	* @param bool $assoc When true, returned objects will be converted
23	* into associative arrays.
24	* @param int $depth User specified recursion depth.
25	* @param int $options Bitmask of JSON decode options.
26	*
27	* @return mixed
28	* @throws JsonException if the JSON cannot be decoded.
29	* @link http://www.php.net/manual/en/function.json-decode.php
30	*/
31	function json_decode(string $json, bool $assoc = false, int $depth = 512, int $options = 0)
32	{
33	$data = \json_decode($json, $assoc, $depth, $options);
34	if (JSON_ERROR_NONE !== json_last_error()) {
35	throw JsonException::createFromPhpError();
36	}
37	return $data;
38	}
39
40
41	/**
42	* Fetchs a stored variable from the cache.
43	*
44	* @param mixed $key The key used to store the value (with
45	* apc_store). If an array is passed then each
46	* element is fetched and returned.
47	* @return mixed The stored variable or array of variables on success; FALSE on failure
48	* @throws ApcException
49	*
50	*/
51	function apc_fetch($key)
52	{
53	error_clear_last();
54	$result = \apc_fetch($key, $success);
55	if ($success === false) {
56	throw ApcException::createFromPhpError();
57	}
58	return $result;
59	}
60
61	/**
62	* Fetchs an entry from the cache.
63	*
64	* @param string\|string[] $key The key used to store the value (with
65	* apcu_store). If an array is passed then each
66	* element is fetched and returned.
67	* @return mixed The stored variable or array of variables on success
68	* @throws ApcuException
69	*
70	*/
71	function apcu_fetch($key)
72	{
73	error_clear_last();
74	$result = \apcu_fetch($key, $success);
75	if ($success === false) {
76	throw ApcuException::createFromPhpError();
77	}
78	return $result;
79	}
80
81	/**
82	* Searches subject for matches to
83	* pattern and replaces them with
84	* replacement.
85	*
86	* @param mixed $pattern The pattern to search for. It can be either a string or an array with
87	* strings.
88	*
89	* Several PCRE modifiers
90	* are also available.
91	* @param mixed $replacement The string or an array with strings to replace. If this parameter is a
92	* string and the pattern parameter is an array,
93	* all patterns will be replaced by that string. If both
94	* pattern and replacement
95	* parameters are arrays, each pattern will be
96	* replaced by the replacement counterpart. If
97	* there are fewer elements in the replacement
98	* array than in the pattern array, any extra
99	* patterns will be replaced by an empty string.
100	*
101	* replacement may contain references of the form
102	* \\n or
103	* $n, with the latter form
104	* being the preferred one. Every such reference will be replaced by the text
105	* captured by the n'th parenthesized pattern.
106	* n can be from 0 to 99, and
107	* \\0 or $0 refers to the text matched
108	* by the whole pattern. Opening parentheses are counted from left to right
109	* (starting from 1) to obtain the number of the capturing subpattern.
110	* To use backslash in replacement, it must be doubled
111	* ("\\\\" PHP string).
112	*
113	* When working with a replacement pattern where a backreference is
114	* immediately followed by another number (i.e.: placing a literal number
115	* immediately after a matched pattern), you cannot use the familiar
116	* \\1 notation for your backreference.
117	* \\11, for example, would confuse
118	* preg_replace since it does not know whether you
119	* want the \\1 backreference followed by a literal
120	* 1, or the \\11 backreference
121	* followed by nothing. In this case the solution is to use
122	* ${1}1. This creates an isolated
123	* $1 backreference, leaving the 1
124	* as a literal.
125	*
126	* When using the deprecated e modifier, this function escapes
127	* some characters (namely ', ",
128	* \ and NULL) in the strings that replace the
129	* backreferences. This is done to ensure that no syntax errors arise
130	* from backreference usage with either single or double quotes (e.g.
131	* 'strlen(\'$1\')+strlen("$2")'). Make sure you are
132	* aware of PHP's string
133	* syntax to know exactly how the interpreted string will look.
134	* @param string\|array\|string[] $subject The string or an array with strings to search and replace.
135	*
136	* If subject is an array, then the search and
137	* replace is performed on every entry of subject,
138	* and the return value is an array as well.
139	* @param int $limit The maximum possible replacements for each pattern in each
140	* subject string. Defaults to
141	* -1 (no limit).
142	* @param int\|null $count If specified, this variable will be filled with the number of
143	* replacements done.
144	*
145	* @return string\|array\|string[] preg_replace returns an array if the
146	* subject parameter is an array, or a string
147	* otherwise.
148	*
149	* If matches are found, the new subject will
150	* be returned, otherwise subject will be
151	* returned unchanged.
152	*
153	* @throws PcreException
154	*
155	*/
156	function preg_replace($pattern, $replacement, $subject, int $limit = -1, ?int &$count = null)
157	{
158	error_clear_last();
159	$result = \preg_replace($pattern, $replacement, $subject, $limit, $count);
160	if (preg_last_error() !== PREG_NO_ERROR \|\| $result === null) {
161	throw PcreException::createFromPhpError();
162	}
163	return $result;
164	}
165
166	/**
167	* @param resource\|null $dir_handle
168	* @return string\|false
169	* @deprecated
170	* This function is only in safe because the php documentation is wrong
171	*/
172	function readdir($dir_handle = null)
173	{
174	if ($dir_handle !== null) {
175	$result = \readdir($dir_handle);
176	} else {
177	$result = \readdir();
178	}
179	return $result;
180	}
181
182	/**
183	* Encrypts given data with given method and key, returns a raw
184	* or base64 encoded string
185	*
186	* @param string $data The plaintext message data to be encrypted.
187	* @param string $method The cipher method. For a list of available cipher methods, use openssl_get_cipher_methods.
188	* @param string $key The key.
189	* @param int $options options is a bitwise disjunction of the flags
190	* OPENSSL_RAW_DATA and
191	* OPENSSL_ZERO_PADDING.
192	* @param string $iv A non-NULL Initialization Vector.
193	* @param string $tag The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM).
194	* @param string $aad Additional authentication data.
195	* @param int $tag_length The length of the authentication tag. Its value can be between 4 and 16 for GCM mode.
196	* @return string Returns the encrypted string.
197	* @throws OpensslException
198	*
199	*/
200	function openssl_encrypt(string $data, string $method, string $key, int $options = 0, string $iv = "", string &$tag = "", string $aad = "", int $tag_length = 16): string
201	{
202	error_clear_last();
203	// The $tag parameter is handled in a weird way by openssl_encrypt. It cannot be provided unless encoding is AEAD
204	if (func_num_args() <= 5) {
205	$result = \openssl_encrypt($data, $method, $key, $options, $iv);
206	} else {
207	$result = \openssl_encrypt($data, $method, $key, $options, $iv, $tag, $aad, $tag_length);
208	}
209	if ($result === false) {
210	throw OpensslException::createFromPhpError();
211	}
212	return $result;
213	}
214
215	/**
216	* The function socket_write writes to the
217	* socket from the given
218	* buffer.
219	*
220	* @param resource $socket
221	* @param string $buffer The buffer to be written.
222	* @param int $length The optional parameter length can specify an
223	* alternate length of bytes written to the socket. If this length is
224	* greater than the buffer length, it is silently truncated to the length
225	* of the buffer.
226	* @return int Returns the number of bytes successfully written to the socket.
227	* The error code can be retrieved with
228	* socket_last_error. This code may be passed to
229	* socket_strerror to get a textual explanation of the
230	* error.
231	* @throws SocketsException
232	*
233	*/
234	function socket_write($socket, string $buffer, int $length = 0): int
235	{
236	error_clear_last();
237	$result = $length === 0 ? \socket_write($socket, $buffer) : \socket_write($socket, $buffer, $length);
238	if ($result === false) {
239	throw SocketsException::createFromPhpError();
240	}
241	return $result;
242	}
243