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posix.php

305 lines

1	<?php
2
3	namespace ProfilePressVendor\Safe;
4
5	use ProfilePressVendor\Safe\Exceptions\PosixException;
6	/**
7	* posix_access checks the user's permission of a file.
8	*
9	* @param string $file The name of the file to be tested.
10	* @param int $mode A mask consisting of one or more of POSIX_F_OK,
11	* POSIX_R_OK, POSIX_W_OK and
12	* POSIX_X_OK.
13	*
14	* POSIX_R_OK, POSIX_W_OK and
15	* POSIX_X_OK request checking whether the file
16	* exists and has read, write and execute permissions, respectively.
17	* POSIX_F_OK just requests checking for the
18	* existence of the file.
19	* @throws PosixException
20	*
21	*/
22	function posix_access(string $file, int $mode = \POSIX_F_OK): void
23	{
24	error_clear_last();
25	$result = \posix_access($file, $mode);
26	if ($result === \false) {
27	throw PosixException::createFromPhpError();
28	}
29	}
30	/**
31	* Gets information about a group provided its name.
32	*
33	* @param string $name The name of the group
34	* @return array Returns an array on success.
35	* The array elements returned are:
36	*
37	* The group information array
38	*
39	*
40	*
41	* Element
42	* Description
43	*
44	*
45	*
46	*
47	* name
48	*
49	* The name element contains the name of the group. This is
50	* a short, usually less than 16 character "handle" of the
51	* group, not the real, full name. This should be the same as
52	* the name parameter used when
53	* calling the function, and hence redundant.
54	*
55	*
56	*
57	* passwd
58	*
59	* The passwd element contains the group's password in an
60	* encrypted format. Often, for example on a system employing
61	* "shadow" passwords, an asterisk is returned instead.
62	*
63	*
64	*
65	* gid
66	*
67	* Group ID of the group in numeric form.
68	*
69	*
70	*
71	* members
72	*
73	* This consists of an array of
74	* string's for all the members in the group.
75	*
76	*
77	*
78	*
79	*
80	* @throws PosixException
81	*
82	*/
83	function posix_getgrnam(string $name): array
84	{
85	error_clear_last();
86	$result = \posix_getgrnam($name);
87	if ($result === \false) {
88	throw PosixException::createFromPhpError();
89	}
90	return $result;
91	}
92	/**
93	* Returns the process group identifier of the process
94	* pid.
95	*
96	* @param int $pid The process id.
97	* @return int Returns the identifier, as an integer.
98	* @throws PosixException
99	*
100	*/
101	function posix_getpgid(int $pid): int
102	{
103	error_clear_last();
104	$result = \posix_getpgid($pid);
105	if ($result === \false) {
106	throw PosixException::createFromPhpError();
107	}
108	return $result;
109	}
110	/**
111	* Calculates the group access list for the user specified in name.
112	*
113	* @param string $name The user to calculate the list for.
114	* @param int $base_group_id Typically the group number from the password file.
115	* @throws PosixException
116	*
117	*/
118	function posix_initgroups(string $name, int $base_group_id): void
119	{
120	error_clear_last();
121	$result = \posix_initgroups($name, $base_group_id);
122	if ($result === \false) {
123	throw PosixException::createFromPhpError();
124	}
125	}
126	/**
127	* Send the signal sig to the process with
128	* the process identifier pid.
129	*
130	* @param int $pid The process identifier.
131	* @param int $sig One of the PCNTL signals constants.
132	* @throws PosixException
133	*
134	*/
135	function posix_kill(int $pid, int $sig): void
136	{
137	error_clear_last();
138	$result = \posix_kill($pid, $sig);
139	if ($result === \false) {
140	throw PosixException::createFromPhpError();
141	}
142	}
143	/**
144	* posix_mkfifo creates a special
145	* FIFO file which exists in the file system and acts as
146	* a bidirectional communication endpoint for processes.
147	*
148	* @param string $pathname Path to the FIFO file.
149	* @param int $mode The second parameter mode has to be given in
150	* octal notation (e.g. 0644). The permission of the newly created
151	* FIFO also depends on the setting of the current
152	* umask. The permissions of the created file are
153	* (mode & ~umask).
154	* @throws PosixException
155	*
156	*/
157	function posix_mkfifo(string $pathname, int $mode): void
158	{
159	error_clear_last();
160	$result = \posix_mkfifo($pathname, $mode);
161	if ($result === \false) {
162	throw PosixException::createFromPhpError();
163	}
164	}
165	/**
166	* Creates a special or ordinary file.
167	*
168	* @param string $pathname The file to create
169	* @param int $mode This parameter is constructed by a bitwise OR between file type (one of
170	* the following constants: POSIX_S_IFREG,
171	* POSIX_S_IFCHR, POSIX_S_IFBLK,
172	* POSIX_S_IFIFO or
173	* POSIX_S_IFSOCK) and permissions.
174	* @param int $major The major device kernel identifier (required to pass when using
175	* S_IFCHR or S_IFBLK).
176	* @param int $minor The minor device kernel identifier.
177	* @throws PosixException
178	*
179	*/
180	function posix_mknod(string $pathname, int $mode, int $major = 0, int $minor = 0): void
181	{
182	error_clear_last();
183	$result = \posix_mknod($pathname, $mode, $major, $minor);
184	if ($result === \false) {
185	throw PosixException::createFromPhpError();
186	}
187	}
188	/**
189	* Set the effective group ID of the current process. This is a
190	* privileged function and needs appropriate privileges (usually
191	* root) on the system to be able to perform this function.
192	*
193	* @param int $gid The group id.
194	* @throws PosixException
195	*
196	*/
197	function posix_setegid(int $gid): void
198	{
199	error_clear_last();
200	$result = \posix_setegid($gid);
201	if ($result === \false) {
202	throw PosixException::createFromPhpError();
203	}
204	}
205	/**
206	* Set the effective user ID of the current process. This is a privileged
207	* function and needs appropriate privileges (usually root) on
208	* the system to be able to perform this function.
209	*
210	* @param int $uid The user id.
211	* @throws PosixException
212	*
213	*/
214	function posix_seteuid(int $uid): void
215	{
216	error_clear_last();
217	$result = \posix_seteuid($uid);
218	if ($result === \false) {
219	throw PosixException::createFromPhpError();
220	}
221	}
222	/**
223	* Set the real group ID of the current process. This is a
224	* privileged function and needs appropriate privileges (usually
225	* root) on the system to be able to perform this function. The
226	* appropriate order of function calls is
227	* posix_setgid first,
228	* posix_setuid last.
229	*
230	* @param int $gid The group id.
231	* @throws PosixException
232	*
233	*/
234	function posix_setgid(int $gid): void
235	{
236	error_clear_last();
237	$result = \posix_setgid($gid);
238	if ($result === \false) {
239	throw PosixException::createFromPhpError();
240	}
241	}
242	/**
243	* Let the process pid join the process group
244	* pgid.
245	*
246	* @param int $pid The process id.
247	* @param int $pgid The process group id.
248	* @throws PosixException
249	*
250	*/
251	function posix_setpgid(int $pid, int $pgid): void
252	{
253	error_clear_last();
254	$result = \posix_setpgid($pid, $pgid);
255	if ($result === \false) {
256	throw PosixException::createFromPhpError();
257	}
258	}
259	/**
260	* posix_setrlimit sets the soft and hard limits for a
261	* given system resource.
262	*
263	*
264	* Each resource has an associated soft and hard limit. The soft
265	* limit is the value that the kernel enforces for the corresponding
266	* resource. The hard limit acts as a ceiling for the soft limit.
267	* An unprivileged process may only set its soft limit to a value
268	* from 0 to the hard limit, and irreversibly lower its hard limit.
269	*
270	* @param int $resource The
271	* resource limit constant
272	* corresponding to the limit that is being set.
273	* @param int $softlimit The soft limit, in whatever unit the resource limit requires, or
274	* POSIX_RLIMIT_INFINITY.
275	* @param int $hardlimit The hard limit, in whatever unit the resource limit requires, or
276	* POSIX_RLIMIT_INFINITY.
277	* @throws PosixException
278	*
279	*/
280	function posix_setrlimit(int $resource, int $softlimit, int $hardlimit): void
281	{
282	error_clear_last();
283	$result = \posix_setrlimit($resource, $softlimit, $hardlimit);
284	if ($result === \false) {
285	throw PosixException::createFromPhpError();
286	}
287	}
288	/**
289	* Set the real user ID of the current process. This is a privileged
290	* function that needs appropriate privileges (usually root) on
291	* the system to be able to perform this function.
292	*
293	* @param int $uid The user id.
294	* @throws PosixException
295	*
296	*/
297	function posix_setuid(int $uid): void
298	{
299	error_clear_last();
300	$result = \posix_setuid($uid);
301	if ($result === \false) {
302	throw PosixException::createFromPhpError();
303	}
304	}
305