xref: /PHP-7.4/ext/zlib/php_zlib.h (revision 92ac598a)
1 /*
2    +----------------------------------------------------------------------+
3    | PHP Version 7                                                        |
4    +----------------------------------------------------------------------+
5    | Copyright (c) The PHP Group                                          |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 3.01 of the PHP license,      |
8    | that is bundled with this package in the file LICENSE, and is        |
9    | available through the world-wide-web at the following url:           |
10    | http://www.php.net/license/3_01.txt                                  |
11    | If you did not receive a copy of the PHP license and are unable to   |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@php.net so we can mail you a copy immediately.               |
14    +----------------------------------------------------------------------+
15    | Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca>                       |
16    |          Stefan R�hrich <sr@linux.de>                                |
17    |          Michael Wallner <mike@php.net>                              |
18    +----------------------------------------------------------------------+
19 */
20 
21 #ifndef PHP_ZLIB_H
22 #define PHP_ZLIB_H
23 
24 #include "php_version.h"
25 #define PHP_ZLIB_VERSION PHP_VERSION
26 
27 #include <zlib.h>
28 
29 #define PHP_ZLIB_ENCODING_RAW		-0xf
30 #define PHP_ZLIB_ENCODING_GZIP		0x1f
31 #define PHP_ZLIB_ENCODING_DEFLATE	0x0f
32 
33 #define PHP_ZLIB_ENCODING_ANY		0x2f
34 
35 #define PHP_ZLIB_OUTPUT_HANDLER_NAME "zlib output compression"
36 #define PHP_ZLIB_BUFFER_SIZE_GUESS(in_len) (((size_t) ((double) in_len * (double) 1.015)) + 10 + 8 + 4 + 1)
37 
38 typedef struct _php_zlib_buffer {
39 	char *data;
40 	char *aptr;
41 	size_t used;
42 	size_t free;
43 	size_t size;
44 } php_zlib_buffer;
45 
46 typedef struct _php_zlib_context {
47 	z_stream Z;
48 	char *inflateDict;
49 	int status;
50 	size_t inflateDictlen;
51 	php_zlib_buffer buffer;
52 } php_zlib_context;
53 
54 ZEND_BEGIN_MODULE_GLOBALS(zlib)
55 	/* variables for transparent gzip encoding */
56 	zend_long output_compression;
57 	zend_long output_compression_level;
58 	char *output_handler;
59 	php_zlib_context *ob_gzhandler;
60 	zend_long output_compression_default;
61 	zend_bool handler_registered;
62 	int compression_coding;
63 ZEND_END_MODULE_GLOBALS(zlib);
64 
65 #define ZLIBG(v) ZEND_MODULE_GLOBALS_ACCESSOR(zlib, v)
66 
67 php_stream *php_stream_gzopen(php_stream_wrapper *wrapper, const char *path, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC);
68 extern const php_stream_ops php_stream_gzio_ops;
69 extern const php_stream_wrapper php_stream_gzip_wrapper;
70 extern const php_stream_filter_factory php_zlib_filter_factory;
71 extern zend_module_entry php_zlib_module_entry;
72 #define zlib_module_ptr &php_zlib_module_entry
73 #define phpext_zlib_ptr zlib_module_ptr
74 
75 #endif /* PHP_ZLIB_H */
76