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) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_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 if (pfilefunc->zfile_func64.zopen64_file != NULL) 33 return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); 34 else 35 { 36 return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); 37 } 38 } 39 40 long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) { 41 if (pfilefunc->zfile_func64.zseek64_file != NULL) 42 return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); 43 else 44 { 45 uLong offsetTruncated = (uLong)offset; 46 if (offsetTruncated != offset) 47 return -1; 48 else 49 return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); 50 } 51 } 52 53 ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc, voidpf filestream) { 54 if (pfilefunc->zfile_func64.zseek64_file != NULL) 55 return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); 56 else 57 { 58 uLong tell_uLong = (uLong)(*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); 59 if ((tell_uLong) == MAXU32) 60 return (ZPOS64_T)-1; 61 else 62 return tell_uLong; 63 } 64 } 65 66 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32) { 67 p_filefunc64_32->zfile_func64.zopen64_file = NULL; 68 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; 69 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; 70 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; 71 p_filefunc64_32->zfile_func64.ztell64_file = NULL; 72 p_filefunc64_32->zfile_func64.zseek64_file = NULL; 73 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; 74 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; 75 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; 76 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; 77 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; 78 } 79 80 81 82 static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char* filename, int mode) { 83 FILE* file = NULL; 84 const char* mode_fopen = NULL; 85 (void)opaque; 86 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) 87 mode_fopen = "rb"; 88 else 89 if (mode & ZLIB_FILEFUNC_MODE_EXISTING) 90 mode_fopen = "r+b"; 91 else 92 if (mode & ZLIB_FILEFUNC_MODE_CREATE) 93 mode_fopen = "wb"; 94 95 if ((filename!=NULL) && (mode_fopen != NULL)) 96 file = fopen(filename, mode_fopen); 97 return file; 98 } 99 100 static voidpf ZCALLBACK fopen64_file_func(voidpf opaque, const void* filename, int mode) { 101 FILE* file = NULL; 102 const char* mode_fopen = NULL; 103 (void)opaque; 104 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) 105 mode_fopen = "rb"; 106 else 107 if (mode & ZLIB_FILEFUNC_MODE_EXISTING) 108 mode_fopen = "r+b"; 109 else 110 if (mode & ZLIB_FILEFUNC_MODE_CREATE) 111 mode_fopen = "wb"; 112 113 if ((filename!=NULL) && (mode_fopen != NULL)) 114 file = FOPEN_FUNC((const char*)filename, mode_fopen); 115 return file; 116 } 117 118 119 static uLong ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uLong size) { 120 uLong ret; 121 (void)opaque; 122 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); 123 return ret; 124 } 125 126 static uLong ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) { 127 uLong ret; 128 (void)opaque; 129 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); 130 return ret; 131 } 132 133 static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream) { 134 long ret; 135 (void)opaque; 136 ret = ftell((FILE *)stream); 137 return ret; 138 } 139 140 141 static ZPOS64_T ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream) { 142 ZPOS64_T ret; 143 (void)opaque; 144 ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream); 145 return ret; 146 } 147 148 static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) { 149 int fseek_origin=0; 150 long ret; 151 (void)opaque; 152 switch (origin) 153 { 154 case ZLIB_FILEFUNC_SEEK_CUR : 155 fseek_origin = SEEK_CUR; 156 break; 157 case ZLIB_FILEFUNC_SEEK_END : 158 fseek_origin = SEEK_END; 159 break; 160 case ZLIB_FILEFUNC_SEEK_SET : 161 fseek_origin = SEEK_SET; 162 break; 163 default: return -1; 164 } 165 ret = 0; 166 if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0) 167 ret = -1; 168 return ret; 169 } 170 171 static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) { 172 int fseek_origin=0; 173 long ret; 174 (void)opaque; 175 switch (origin) 176 { 177 case ZLIB_FILEFUNC_SEEK_CUR : 178 fseek_origin = SEEK_CUR; 179 break; 180 case ZLIB_FILEFUNC_SEEK_END : 181 fseek_origin = SEEK_END; 182 break; 183 case ZLIB_FILEFUNC_SEEK_SET : 184 fseek_origin = SEEK_SET; 185 break; 186 default: return -1; 187 } 188 ret = 0; 189 190 if(FSEEKO_FUNC((FILE *)stream, (z_off64_t)offset, fseek_origin) != 0) 191 ret = -1; 192 193 return ret; 194 } 195 196 197 static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream) { 198 int ret; 199 (void)opaque; 200 ret = fclose((FILE *)stream); 201 return ret; 202 } 203 204 static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream) { 205 int ret; 206 (void)opaque; 207 ret = ferror((FILE *)stream); 208 return ret; 209 } 210 211 void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def) { 212 pzlib_filefunc_def->zopen_file = fopen_file_func; 213 pzlib_filefunc_def->zread_file = fread_file_func; 214 pzlib_filefunc_def->zwrite_file = fwrite_file_func; 215 pzlib_filefunc_def->ztell_file = ftell_file_func; 216 pzlib_filefunc_def->zseek_file = fseek_file_func; 217 pzlib_filefunc_def->zclose_file = fclose_file_func; 218 pzlib_filefunc_def->zerror_file = ferror_file_func; 219 pzlib_filefunc_def->opaque = NULL; 220 } 221 222 void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def) { 223 pzlib_filefunc_def->zopen64_file = fopen64_file_func; 224 pzlib_filefunc_def->zread_file = fread_file_func; 225 pzlib_filefunc_def->zwrite_file = fwrite_file_func; 226 pzlib_filefunc_def->ztell64_file = ftell64_file_func; 227 pzlib_filefunc_def->zseek64_file = fseek64_file_func; 228 pzlib_filefunc_def->zclose_file = fclose_file_func; 229 pzlib_filefunc_def->zerror_file = ferror_file_func; 230 pzlib_filefunc_def->opaque = NULL; 231 } 232