| 1 | /* ioapi.h -- IO base function header for compress/uncompress .zip |
| 2 | part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) |
| 3 | |
| 4 | Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) |
| 5 | |
| 6 | Modifications for Zip64 support |
| 7 | Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) |
| 8 | |
| 9 | For more info read MiniZip_info.txt |
| 10 | |
| 11 | */ |
| 12 | |
| 13 | #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS))) |
| 14 | #define _CRT_SECURE_NO_WARNINGS |
| 15 | #endif |
| 16 | |
| 17 | #if defined(__APPLE__) || defined(IOAPI_NO_64) |
| 18 | // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions |
| 19 | #define FOPEN_FUNC(filename, mode) fopen(filename, mode) |
| 20 | #define FTELLO_FUNC(stream) ftello(stream) |
| 21 | #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin) |
| 22 | #else |
| 23 | #define FOPEN_FUNC(filename, mode) fopen64(filename, mode) |
| 24 | #define FTELLO_FUNC(stream) ftello64(stream) |
| 25 | #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin) |
| 26 | #endif |
| 27 | |
| 28 | |
| 29 | #include "ioapi.h" |
| 30 | |
| 31 | voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) |
| 32 | { |
| 33 | if (pfilefunc->zfile_func64.zopen64_file != NULL) |
| 34 | return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); |
| 35 | else |
| 36 | { |
| 37 | return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) |
| 42 | { |
| 43 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
| 44 | return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); |
| 45 | else |
| 46 | { |
| 47 | uLong offsetTruncated = (uLong)offset; |
| 48 | if (offsetTruncated != offset) |
| 49 | return -1; |
| 50 | else |
| 51 | return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) |
| 56 | { |
| 57 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
| 58 | return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); |
| 59 | else |
| 60 | { |
| 61 | uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); |
| 62 | if ((tell_uLong) == MAXU32) |
| 63 | return (ZPOS64_T)-1; |
| 64 | else |
| 65 | return tell_uLong; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) |
| 70 | { |
| 71 | p_filefunc64_32->zfile_func64.zopen64_file = NULL; |
| 72 | p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; |
| 73 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
| 74 | p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; |
| 75 | p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; |
| 76 | p_filefunc64_32->zfile_func64.ztell64_file = NULL; |
| 77 | p_filefunc64_32->zfile_func64.zseek64_file = NULL; |
| 78 | p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; |
| 79 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
| 80 | p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; |
| 81 | p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; |
| 82 | p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; |
| 83 | } |
| 84 | |
| 85 | |
| 86 | |
| 87 | static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); |
| 88 | static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); |
| 89 | static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); |
| 90 | static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); |
| 91 | static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); |
| 92 | static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); |
| 93 | static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); |
| 94 | |
| 95 | static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) |
| 96 | { |
| 97 | FILE* file = NULL; |
| 98 | const char* mode_fopen = NULL; |
| 99 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
| 100 | mode_fopen = "rb"; |
| 101 | else |
| 102 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
| 103 | mode_fopen = "r+b"; |
| 104 | else |
| 105 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
| 106 | mode_fopen = "wb"; |
| 107 | |
| 108 | if ((filename!=NULL) && (mode_fopen != NULL)) |
| 109 | file = fopen(filename, mode_fopen); |
| 110 | return file; |
| 111 | } |
| 112 | |
| 113 | static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) |
| 114 | { |
| 115 | FILE* file = NULL; |
| 116 | const char* mode_fopen = NULL; |
| 117 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
| 118 | mode_fopen = "rb"; |
| 119 | else |
| 120 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
| 121 | mode_fopen = "r+b"; |
| 122 | else |
| 123 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
| 124 | mode_fopen = "wb"; |
| 125 | |
| 126 | if ((filename!=NULL) && (mode_fopen != NULL)) |
| 127 | file = FOPEN_FUNC((const char*)filename, mode_fopen); |
| 128 | return file; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) |
| 133 | { |
| 134 | uLong ret; |
| 135 | ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) |
| 140 | { |
| 141 | uLong ret; |
| 142 | ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) |
| 147 | { |
| 148 | long ret; |
| 149 | ret = ftell((FILE *)stream); |
| 150 | return ret; |
| 151 | } |
| 152 | |
| 153 | |
| 154 | static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) |
| 155 | { |
| 156 | ZPOS64_T ret; |
| 157 | ret = FTELLO_FUNC((FILE *)stream); |
| 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) |
| 162 | { |
| 163 | int fseek_origin=0; |
| 164 | long ret; |
| 165 | switch (origin) |
| 166 | { |
| 167 | case ZLIB_FILEFUNC_SEEK_CUR : |
| 168 | fseek_origin = SEEK_CUR; |
| 169 | break; |
| 170 | case ZLIB_FILEFUNC_SEEK_END : |
| 171 | fseek_origin = SEEK_END; |
| 172 | break; |
| 173 | case ZLIB_FILEFUNC_SEEK_SET : |
| 174 | fseek_origin = SEEK_SET; |
| 175 | break; |
| 176 | default: return -1; |
| 177 | } |
| 178 | ret = 0; |
| 179 | if (fseek((FILE *)stream, offset, fseek_origin) != 0) |
| 180 | ret = -1; |
| 181 | return ret; |
| 182 | } |
| 183 | |
| 184 | static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) |
| 185 | { |
| 186 | int fseek_origin=0; |
| 187 | long ret; |
| 188 | switch (origin) |
| 189 | { |
| 190 | case ZLIB_FILEFUNC_SEEK_CUR : |
| 191 | fseek_origin = SEEK_CUR; |
| 192 | break; |
| 193 | case ZLIB_FILEFUNC_SEEK_END : |
| 194 | fseek_origin = SEEK_END; |
| 195 | break; |
| 196 | case ZLIB_FILEFUNC_SEEK_SET : |
| 197 | fseek_origin = SEEK_SET; |
| 198 | break; |
| 199 | default: return -1; |
| 200 | } |
| 201 | ret = 0; |
| 202 | |
| 203 | if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0) |
| 204 | ret = -1; |
| 205 | |
| 206 | return ret; |
| 207 | } |
| 208 | |
| 209 | |
| 210 | static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) |
| 211 | { |
| 212 | int ret; |
| 213 | ret = fclose((FILE *)stream); |
| 214 | return ret; |
| 215 | } |
| 216 | |
| 217 | static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) |
| 218 | { |
| 219 | int ret; |
| 220 | ret = ferror((FILE *)stream); |
| 221 | return ret; |
| 222 | } |
| 223 | |
| 224 | void fill_fopen_filefunc (pzlib_filefunc_def) |
| 225 | zlib_filefunc_def* pzlib_filefunc_def; |
| 226 | { |
| 227 | pzlib_filefunc_def->zopen_file = fopen_file_func; |
| 228 | pzlib_filefunc_def->zread_file = fread_file_func; |
| 229 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
| 230 | pzlib_filefunc_def->ztell_file = ftell_file_func; |
| 231 | pzlib_filefunc_def->zseek_file = fseek_file_func; |
| 232 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
| 233 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
| 234 | pzlib_filefunc_def->opaque = NULL; |
| 235 | } |
| 236 | |
| 237 | void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) |
| 238 | { |
| 239 | pzlib_filefunc_def->zopen64_file = fopen64_file_func; |
| 240 | pzlib_filefunc_def->zread_file = fread_file_func; |
| 241 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
| 242 | pzlib_filefunc_def->ztell64_file = ftell64_file_func; |
| 243 | pzlib_filefunc_def->zseek64_file = fseek64_file_func; |
| 244 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
| 245 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
| 246 | pzlib_filefunc_def->opaque = NULL; |
| 247 | } |