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 = (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 (void)opaque; 98 FILE* file = NULL; 99 const char* mode_fopen = NULL; 100 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) 101 mode_fopen = "rb"; 102 else 103 if (mode & ZLIB_FILEFUNC_MODE_EXISTING) 104 mode_fopen = "r+b"; 105 else 106 if (mode & ZLIB_FILEFUNC_MODE_CREATE) 107 mode_fopen = "wb"; 108 109 if ((filename!=NULL) && (mode_fopen != NULL)) 110 file = fopen(filename, mode_fopen); 111 return file; 112 } 113 114 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) 115 { 116 (void)opaque; 117 FILE* file = NULL; 118 const char* mode_fopen = NULL; 119 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) 120 mode_fopen = "rb"; 121 else 122 if (mode & ZLIB_FILEFUNC_MODE_EXISTING) 123 mode_fopen = "r+b"; 124 else 125 if (mode & ZLIB_FILEFUNC_MODE_CREATE) 126 mode_fopen = "wb"; 127 128 if ((filename!=NULL) && (mode_fopen != NULL)) 129 file = FOPEN_FUNC((const char*)filename, mode_fopen); 130 return file; 131 } 132 133 134 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) 135 { 136 (void)opaque; 137 uLong ret; 138 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); 139 return ret; 140 } 141 142 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) 143 { 144 (void)opaque; 145 uLong ret; 146 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); 147 return ret; 148 } 149 150 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) 151 { 152 (void)opaque; 153 long ret; 154 ret = ftell((FILE *)stream); 155 return ret; 156 } 157 158 159 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) 160 { 161 (void)opaque; 162 ZPOS64_T ret; 163 ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream); 164 return ret; 165 } 166 167 static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) 168 { 169 (void)opaque; 170 int fseek_origin=0; 171 long ret; 172 switch (origin) 173 { 174 case ZLIB_FILEFUNC_SEEK_CUR : 175 fseek_origin = SEEK_CUR; 176 break; 177 case ZLIB_FILEFUNC_SEEK_END : 178 fseek_origin = SEEK_END; 179 break; 180 case ZLIB_FILEFUNC_SEEK_SET : 181 fseek_origin = SEEK_SET; 182 break; 183 default: return -1; 184 } 185 ret = 0; 186 if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0) 187 ret = -1; 188 return ret; 189 } 190 191 static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) 192 { 193 (void)opaque; 194 int fseek_origin=0; 195 long ret; 196 switch (origin) 197 { 198 case ZLIB_FILEFUNC_SEEK_CUR : 199 fseek_origin = SEEK_CUR; 200 break; 201 case ZLIB_FILEFUNC_SEEK_END : 202 fseek_origin = SEEK_END; 203 break; 204 case ZLIB_FILEFUNC_SEEK_SET : 205 fseek_origin = SEEK_SET; 206 break; 207 default: return -1; 208 } 209 ret = 0; 210 211 if(FSEEKO_FUNC((FILE *)stream, (long)offset, fseek_origin) != 0) 212 ret = -1; 213 214 return ret; 215 } 216 217 218 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) 219 { 220 (void)opaque; 221 int ret; 222 ret = fclose((FILE *)stream); 223 return ret; 224 } 225 226 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) 227 { 228 (void)opaque; 229 int ret; 230 ret = ferror((FILE *)stream); 231 return ret; 232 } 233 234 void fill_fopen_filefunc (pzlib_filefunc_def) 235 zlib_filefunc_def* pzlib_filefunc_def; 236 { 237 pzlib_filefunc_def->zopen_file = fopen_file_func; 238 pzlib_filefunc_def->zread_file = fread_file_func; 239 pzlib_filefunc_def->zwrite_file = fwrite_file_func; 240 pzlib_filefunc_def->ztell_file = ftell_file_func; 241 pzlib_filefunc_def->zseek_file = fseek_file_func; 242 pzlib_filefunc_def->zclose_file = fclose_file_func; 243 pzlib_filefunc_def->zerror_file = ferror_file_func; 244 pzlib_filefunc_def->opaque = NULL; 245 } 246 247 void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) 248 { 249 pzlib_filefunc_def->zopen64_file = fopen64_file_func; 250 pzlib_filefunc_def->zread_file = fread_file_func; 251 pzlib_filefunc_def->zwrite_file = fwrite_file_func; 252 pzlib_filefunc_def->ztell64_file = ftell64_file_func; 253 pzlib_filefunc_def->zseek64_file = fseek64_file_func; 254 pzlib_filefunc_def->zclose_file = fclose_file_func; 255 pzlib_filefunc_def->zerror_file = ferror_file_func; 256 pzlib_filefunc_def->opaque = NULL; 257 } 258