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 } 248
