xref: /php-src/ext/zlib/php_zlib.h (revision 01b3fc03)
1 /*
2    +----------------------------------------------------------------------+
3    | Copyright (c) The PHP Group                                          |
4    +----------------------------------------------------------------------+
5    | This source file is subject to version 3.01 of the PHP license,      |
6    | that is bundled with this package in the file LICENSE, and is        |
7    | available through the world-wide-web at the following url:           |
8    | https://www.php.net/license/3_01.txt                                 |
9    | If you did not receive a copy of the PHP license and are unable to   |
10    | obtain it through the world-wide-web, please send a note to          |
11    | license@php.net so we can mail you a copy immediately.               |
12    +----------------------------------------------------------------------+
13    | Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca>                       |
14    |          Stefan R�hrich <sr@linux.de>                                |
15    |          Michael Wallner <mike@php.net>                              |
16    +----------------------------------------------------------------------+
17 */
18 
19 #ifndef PHP_ZLIB_H
20 #define PHP_ZLIB_H
21 
22 #include "php_version.h"
23 #define PHP_ZLIB_VERSION PHP_VERSION
24 
25 #include <zlib.h>
26 
27 #define PHP_ZLIB_ENCODING_RAW		-0xf
28 #define PHP_ZLIB_ENCODING_GZIP		0x1f
29 #define PHP_ZLIB_ENCODING_DEFLATE	0x0f
30 
31 #define PHP_ZLIB_ENCODING_ANY		0x2f
32 
33 #define PHP_ZLIB_OUTPUT_HANDLER_NAME "zlib output compression"
34 #define PHP_ZLIB_BUFFER_SIZE_GUESS(in_len) (((size_t) ((double) in_len * (double) 1.015)) + 10 + 8 + 4 + 1)
35 
36 typedef struct _php_zlib_buffer {
37 	char *data;
38 	char *aptr;
39 	size_t used;
40 	size_t free;
41 	size_t size;
42 } php_zlib_buffer;
43 
44 typedef struct _php_zlib_context {
45 	z_stream Z;
46 	char *inflateDict;
47 	int status;
48 	size_t inflateDictlen;
49 	php_zlib_buffer buffer;
50 	zend_object std;
51 } php_zlib_context;
52 
53 ZEND_BEGIN_MODULE_GLOBALS(zlib)
54 	/* variables for transparent gzip encoding */
55 	zend_long output_compression;
56 	zend_long output_compression_level;
57 	char *output_handler;
58 	php_zlib_context *ob_gzhandler;
59 	zend_long output_compression_default;
60 	bool handler_registered;
61 	int compression_coding;
62 ZEND_END_MODULE_GLOBALS(zlib);
63 
64 #define ZLIBG(v) ZEND_MODULE_GLOBALS_ACCESSOR(zlib, v)
65 
66 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);
67 extern const php_stream_ops php_stream_gzio_ops;
68 extern const php_stream_wrapper php_stream_gzip_wrapper;
69 extern const php_stream_filter_factory php_zlib_filter_factory;
70 extern zend_module_entry php_zlib_module_entry;
71 #define zlib_module_ptr &php_zlib_module_entry
72 #define phpext_zlib_ptr zlib_module_ptr
73 
74 #endif /* PHP_ZLIB_H */
75