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 } 236
