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comparison: security/nss/lib/zlib/gzguts.h
security/nss/lib/zlib/gzguts.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:369628cc0249 |
|---|---|
| 1 /* gzguts.h -- zlib internal header definitions for gz* operations | |
| 2 * Copyright (C) 2004, 2005, 2010 Mark Adler | |
| 3 * For conditions of distribution and use, see copyright notice in zlib.h | |
| 4 */ | |
| 5 | |
| 6 #ifdef _LARGEFILE64_SOURCE | |
| 7 # ifndef _LARGEFILE_SOURCE | |
| 8 # define _LARGEFILE_SOURCE 1 | |
| 9 # endif | |
| 10 # ifdef _FILE_OFFSET_BITS | |
| 11 # undef _FILE_OFFSET_BITS | |
| 12 # endif | |
| 13 #endif | |
| 14 | |
| 15 #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) | |
| 16 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) | |
| 17 #else | |
| 18 # define ZLIB_INTERNAL | |
| 19 #endif | |
| 20 | |
| 21 #include <stdio.h> | |
| 22 #include "zlib.h" | |
| 23 #ifdef STDC | |
| 24 # include <string.h> | |
| 25 # include <stdlib.h> | |
| 26 # include <limits.h> | |
| 27 #endif | |
| 28 #include <fcntl.h> | |
| 29 | |
| 30 #ifdef NO_DEFLATE /* for compatibility with old definition */ | |
| 31 # define NO_GZCOMPRESS | |
| 32 #endif | |
| 33 | |
| 34 #ifdef _MSC_VER | |
| 35 # include <io.h> | |
| 36 # define vsnprintf _vsnprintf | |
| 37 #endif | |
| 38 | |
| 39 #ifndef local | |
| 40 # define local static | |
| 41 #endif | |
| 42 /* compile with -Dlocal if your debugger can't find static symbols */ | |
| 43 | |
| 44 /* gz* functions always use library allocation functions */ | |
| 45 #ifndef STDC | |
| 46 extern voidp malloc OF((uInt size)); | |
| 47 extern void free OF((voidpf ptr)); | |
| 48 #endif | |
| 49 | |
| 50 /* get errno and strerror definition */ | |
| 51 #if defined UNDER_CE | |
| 52 # include <windows.h> | |
| 53 # define zstrerror() gz_strwinerror((DWORD)GetLastError()) | |
| 54 #else | |
| 55 # ifdef STDC | |
| 56 # include <errno.h> | |
| 57 # define zstrerror() strerror(errno) | |
| 58 # else | |
| 59 # define zstrerror() "stdio error (consult errno)" | |
| 60 # endif | |
| 61 #endif | |
| 62 | |
| 63 /* provide prototypes for these when building zlib without LFS */ | |
| 64 #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 | |
| 65 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); | |
| 66 ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); | |
| 67 ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); | |
| 68 ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); | |
| 69 #endif | |
| 70 | |
| 71 /* default i/o buffer size -- double this for output when reading */ | |
| 72 #define GZBUFSIZE 8192 | |
| 73 | |
| 74 /* gzip modes, also provide a little integrity check on the passed structure */ | |
| 75 #define GZ_NONE 0 | |
| 76 #define GZ_READ 7247 | |
| 77 #define GZ_WRITE 31153 | |
| 78 #define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */ | |
| 79 | |
| 80 /* values for gz_state how */ | |
| 81 #define LOOK 0 /* look for a gzip header */ | |
| 82 #define COPY 1 /* copy input directly */ | |
| 83 #define GZIP 2 /* decompress a gzip stream */ | |
| 84 | |
| 85 /* internal gzip file state data structure */ | |
| 86 typedef struct { | |
| 87 /* used for both reading and writing */ | |
| 88 int mode; /* see gzip modes above */ | |
| 89 int fd; /* file descriptor */ | |
| 90 char *path; /* path or fd for error messages */ | |
| 91 z_off64_t pos; /* current position in uncompressed data */ | |
| 92 unsigned size; /* buffer size, zero if not allocated yet */ | |
| 93 unsigned want; /* requested buffer size, default is GZBUFSIZE */ | |
| 94 unsigned char *in; /* input buffer */ | |
| 95 unsigned char *out; /* output buffer (double-sized when reading) */ | |
| 96 unsigned char *next; /* next output data to deliver or write */ | |
| 97 /* just for reading */ | |
| 98 unsigned have; /* amount of output data unused at next */ | |
| 99 int eof; /* true if end of input file reached */ | |
| 100 z_off64_t start; /* where the gzip data started, for rewinding */ | |
| 101 z_off64_t raw; /* where the raw data started, for seeking */ | |
| 102 int how; /* 0: get header, 1: copy, 2: decompress */ | |
| 103 int direct; /* true if last read direct, false if gzip */ | |
| 104 /* just for writing */ | |
| 105 int level; /* compression level */ | |
| 106 int strategy; /* compression strategy */ | |
| 107 /* seek request */ | |
| 108 z_off64_t skip; /* amount to skip (already rewound if backwards) */ | |
| 109 int seek; /* true if seek request pending */ | |
| 110 /* error information */ | |
| 111 int err; /* error code */ | |
| 112 char *msg; /* error message */ | |
| 113 /* zlib inflate or deflate stream */ | |
| 114 z_stream strm; /* stream structure in-place (not a pointer) */ | |
| 115 } gz_state; | |
| 116 typedef gz_state FAR *gz_statep; | |
| 117 | |
| 118 /* shared functions */ | |
| 119 void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *)); | |
| 120 #if defined UNDER_CE | |
| 121 char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error)); | |
| 122 #endif | |
| 123 | |
| 124 /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t | |
| 125 value -- needed when comparing unsigned to z_off64_t, which is signed | |
| 126 (possible z_off64_t types off_t, off64_t, and long are all signed) */ | |
| 127 #ifdef INT_MAX | |
| 128 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) | |
| 129 #else | |
| 130 unsigned ZLIB_INTERNAL gz_intmax OF((void)); | |
| 131 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) | |
| 132 #endif |
