| 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)) |
| 14 | #define _CRT_SECURE_NO_WARNINGS |
| 15 | #endif |
| 16 | |
| 17 | #include "ioapi.h" |
| 18 | |
| 19 | voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) |
| 20 | { |
| 21 | if (pfilefunc->zfile_func64.zopen64_file != NULL) |
| 22 | return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); |
| 23 | else |
| 24 | { |
| 25 | return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) |
| 30 | { |
| 31 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
| 32 | return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); |
| 33 | else |
| 34 | { |
| 35 | uLong offsetTruncated = (uLong)offset; |
| 36 | if (offsetTruncated != offset) |
| 37 | return -1; |
| 38 | else |
| 39 | return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) |
| 44 | { |
| 45 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
| 46 | return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); |
| 47 | else |
| 48 | { |
| 49 | uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); |
| 50 | if ((tell_uLong) == ((uLong)-1)) |
| 51 | return (ZPOS64_T)-1; |
| 52 | else |
| 53 | return tell_uLong; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) |
| 58 | { |
| 59 | p_filefunc64_32->zfile_func64.zopen64_file = NULL; |
| 60 | p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; |
| 61 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
| 62 | p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; |
| 63 | p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; |
| 64 | p_filefunc64_32->zfile_func64.ztell64_file = NULL; |
| 65 | p_filefunc64_32->zfile_func64.zseek64_file = NULL; |
| 66 | p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; |
| 67 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
| 68 | p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; |
| 69 | p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; |
| 70 | p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; |
| 71 | } |
| 72 | |
| 73 | |
| 74 | |
| 75 | static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); |
| 76 | static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); |
| 77 | static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); |
| 78 | static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); |
| 79 | static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); |
| 80 | static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); |
| 81 | static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); |
| 82 | |
| 83 | static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) |
| 84 | { |
| 85 | FILE* file = NULL; |
| 86 | const char* mode_fopen = NULL; |
| 87 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
| 88 | mode_fopen = "rb"; |
| 89 | else |
| 90 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
| 91 | mode_fopen = "r+b"; |
| 92 | else |
| 93 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
| 94 | mode_fopen = "wb"; |
| 95 | |
| 96 | if ((filename!=NULL) && (mode_fopen != NULL)) |
| 97 | file = fopen(filename, mode_fopen); |
| 98 | return file; |
| 99 | } |
| 100 | |
| 101 | static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) |
| 102 | { |
| 103 | FILE* file = NULL; |
| 104 | const char* mode_fopen = NULL; |
| 105 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
| 106 | mode_fopen = "rb"; |
| 107 | else |
| 108 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
| 109 | mode_fopen = "r+b"; |
| 110 | else |
| 111 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
| 112 | mode_fopen = "wb"; |
| 113 | |
| 114 | if ((filename!=NULL) && (mode_fopen != NULL)) |
| 115 | file = fopen64((const char*)filename, mode_fopen); |
| 116 | return file; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) |
| 121 | { |
| 122 | uLong ret; |
| 123 | ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); |
| 124 | return ret; |
| 125 | } |
| 126 | |
| 127 | static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) |
| 128 | { |
| 129 | uLong ret; |
| 130 | ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); |
| 131 | return ret; |
| 132 | } |
| 133 | |
| 134 | static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) |
| 135 | { |
| 136 | long ret; |
| 137 | ret = ftell((FILE *)stream); |
| 138 | return ret; |
| 139 | } |
| 140 | |
| 141 | |
| 142 | static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) |
| 143 | { |
| 144 | ZPOS64_T ret; |
| 145 | ret = ftello64((FILE *)stream); |
| 146 | return ret; |
| 147 | } |
| 148 | |
| 149 | static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) |
| 150 | { |
| 151 | int fseek_origin=0; |
| 152 | long ret; |
| 153 | switch (origin) |
| 154 | { |
| 155 | case ZLIB_FILEFUNC_SEEK_CUR : |
| 156 | fseek_origin = SEEK_CUR; |
| 157 | break; |
| 158 | case ZLIB_FILEFUNC_SEEK_END : |
| 159 | fseek_origin = SEEK_END; |
| 160 | break; |
| 161 | case ZLIB_FILEFUNC_SEEK_SET : |
| 162 | fseek_origin = SEEK_SET; |
| 163 | break; |
| 164 | default: return -1; |
| 165 | } |
| 166 | ret = 0; |
| 167 | if (fseek((FILE *)stream, offset, fseek_origin) != 0) |
| 168 | ret = -1; |
| 169 | return ret; |
| 170 | } |
| 171 | |
| 172 | static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) |
| 173 | { |
| 174 | int fseek_origin=0; |
| 175 | long ret; |
| 176 | switch (origin) |
| 177 | { |
| 178 | case ZLIB_FILEFUNC_SEEK_CUR : |
| 179 | fseek_origin = SEEK_CUR; |
| 180 | break; |
| 181 | case ZLIB_FILEFUNC_SEEK_END : |
| 182 | fseek_origin = SEEK_END; |
| 183 | break; |
| 184 | case ZLIB_FILEFUNC_SEEK_SET : |
| 185 | fseek_origin = SEEK_SET; |
| 186 | break; |
| 187 | default: return -1; |
| 188 | } |
| 189 | ret = 0; |
| 190 | |
| 191 | if(fseeko64((FILE *)stream, offset, fseek_origin) != 0) |
| 192 | ret = -1; |
| 193 | |
| 194 | return ret; |
| 195 | } |
| 196 | |
| 197 | |
| 198 | static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) |
| 199 | { |
| 200 | int ret; |
| 201 | ret = fclose((FILE *)stream); |
| 202 | return ret; |
| 203 | } |
| 204 | |
| 205 | static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) |
| 206 | { |
| 207 | int ret; |
| 208 | ret = ferror((FILE *)stream); |
| 209 | return ret; |
| 210 | } |
| 211 | |
| 212 | void fill_fopen_filefunc (pzlib_filefunc_def) |
| 213 | zlib_filefunc_def* pzlib_filefunc_def; |
| 214 | { |
| 215 | pzlib_filefunc_def->zopen_file = fopen_file_func; |
| 216 | pzlib_filefunc_def->zread_file = fread_file_func; |
| 217 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
| 218 | pzlib_filefunc_def->ztell_file = ftell_file_func; |
| 219 | pzlib_filefunc_def->zseek_file = fseek_file_func; |
| 220 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
| 221 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
| 222 | pzlib_filefunc_def->opaque = NULL; |
| 223 | } |
| 224 | |
| 225 | void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) |
| 226 | { |
| 227 | pzlib_filefunc_def->zopen64_file = fopen64_file_func; |
| 228 | pzlib_filefunc_def->zread_file = fread_file_func; |
| 229 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
| 230 | pzlib_filefunc_def->ztell64_file = ftell64_file_func; |
| 231 | pzlib_filefunc_def->zseek64_file = fseek64_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 | } |