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102
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1 /* ioapi.h -- IO base function header for compress/uncompress .zip
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2 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
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3
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4 Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
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5
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6 Modifications for Zip64 support
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7 Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
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8
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9 For more info read MiniZip_info.txt
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10
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11 */
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12
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13 #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
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14 #define _CRT_SECURE_NO_WARNINGS
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15 #endif
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16
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17 #if defined(__APPLE__) || defined(IOAPI_NO_64)
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18 // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
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19 #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
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20 #define FTELLO_FUNC(stream) ftello(stream)
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21 #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
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22 #else
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23 #define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
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24 #define FTELLO_FUNC(stream) ftello64(stream)
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25 #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
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26 #endif
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27
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28
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29 #include "ioapi.h"
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30
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31 voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)
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32 {
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33 if (pfilefunc->zfile_func64.zopen64_file != NULL)
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34 return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
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35 else
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36 {
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37 return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
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38 }
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39 }
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40
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41 long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
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42 {
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43 if (pfilefunc->zfile_func64.zseek64_file != NULL)
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44 return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
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45 else
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46 {
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47 uLong offsetTruncated = (uLong)offset;
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48 if (offsetTruncated != offset)
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49 return -1;
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50 else
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51 return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
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52 }
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53 }
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54
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55 ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
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56 {
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57 if (pfilefunc->zfile_func64.zseek64_file != NULL)
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58 return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
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59 else
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60 {
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61 uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
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62 if ((tell_uLong) == MAXU32)
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63 return (ZPOS64_T)-1;
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64 else
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65 return tell_uLong;
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66 }
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67 }
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68
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69 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
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70 {
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71 p_filefunc64_32->zfile_func64.zopen64_file = NULL;
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72 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
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73 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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74 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
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75 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
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76 p_filefunc64_32->zfile_func64.ztell64_file = NULL;
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77 p_filefunc64_32->zfile_func64.zseek64_file = NULL;
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78 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
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79 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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80 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
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81 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
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82 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
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83 }
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84
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85
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86
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87 static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
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88 static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
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89 static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
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90 static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
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91 static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
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92 static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
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93 static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
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94
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95 static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
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96 {
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97 FILE* file = NULL;
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98 const char* mode_fopen = NULL;
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99 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
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100 mode_fopen = "rb";
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101 else
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102 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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103 mode_fopen = "r+b";
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104 else
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105 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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106 mode_fopen = "wb";
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107
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108 if ((filename!=NULL) && (mode_fopen != NULL))
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109 file = fopen(filename, mode_fopen);
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110 return file;
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111 }
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112
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113 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
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114 {
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115 FILE* file = NULL;
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116 const char* mode_fopen = NULL;
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117 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
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118 mode_fopen = "rb";
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119 else
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120 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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121 mode_fopen = "r+b";
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122 else
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123 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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124 mode_fopen = "wb";
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125
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126 if ((filename!=NULL) && (mode_fopen != NULL))
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127 file = FOPEN_FUNC((const char*)filename, mode_fopen);
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128 return file;
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129 }
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130
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131
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132 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
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133 {
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134 uLong ret;
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135 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
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136 return ret;
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137 }
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138
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139 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
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140 {
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141 uLong ret;
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142 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
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143 return ret;
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144 }
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145
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146 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
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147 {
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148 long ret;
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149 ret = ftell((FILE *)stream);
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150 return ret;
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151 }
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152
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153
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154 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
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155 {
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156 ZPOS64_T ret;
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157 ret = FTELLO_FUNC((FILE *)stream);
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158 return ret;
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159 }
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160
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161 static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)
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162 {
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163 int fseek_origin=0;
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164 long ret;
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165 switch (origin)
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166 {
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167 case ZLIB_FILEFUNC_SEEK_CUR :
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168 fseek_origin = SEEK_CUR;
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169 break;
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170 case ZLIB_FILEFUNC_SEEK_END :
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171 fseek_origin = SEEK_END;
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172 break;
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173 case ZLIB_FILEFUNC_SEEK_SET :
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174 fseek_origin = SEEK_SET;
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175 break;
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176 default: return -1;
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177 }
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178 ret = 0;
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179 if (fseek((FILE *)stream, offset, fseek_origin) != 0)
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180 ret = -1;
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181 return ret;
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182 }
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183
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184 static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
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185 {
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186 int fseek_origin=0;
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187 long ret;
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188 switch (origin)
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189 {
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190 case ZLIB_FILEFUNC_SEEK_CUR :
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191 fseek_origin = SEEK_CUR;
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192 break;
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193 case ZLIB_FILEFUNC_SEEK_END :
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194 fseek_origin = SEEK_END;
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195 break;
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196 case ZLIB_FILEFUNC_SEEK_SET :
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197 fseek_origin = SEEK_SET;
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198 break;
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199 default: return -1;
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200 }
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201 ret = 0;
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202
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203 if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)
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204 ret = -1;
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205
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206 return ret;
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207 }
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208
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209
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210 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
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211 {
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212 int ret;
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213 ret = fclose((FILE *)stream);
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214 return ret;
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215 }
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216
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217 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
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218 {
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219 int ret;
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220 ret = ferror((FILE *)stream);
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221 return ret;
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222 }
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223
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224 void fill_fopen_filefunc (pzlib_filefunc_def)
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225 zlib_filefunc_def* pzlib_filefunc_def;
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226 {
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227 pzlib_filefunc_def->zopen_file = fopen_file_func;
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228 pzlib_filefunc_def->zread_file = fread_file_func;
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229 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
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230 pzlib_filefunc_def->ztell_file = ftell_file_func;
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231 pzlib_filefunc_def->zseek_file = fseek_file_func;
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232 pzlib_filefunc_def->zclose_file = fclose_file_func;
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233 pzlib_filefunc_def->zerror_file = ferror_file_func;
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234 pzlib_filefunc_def->opaque = NULL;
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235 }
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236
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237 void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def)
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238 {
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239 pzlib_filefunc_def->zopen64_file = fopen64_file_func;
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240 pzlib_filefunc_def->zread_file = fread_file_func;
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241 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
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242 pzlib_filefunc_def->ztell64_file = ftell64_file_func;
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243 pzlib_filefunc_def->zseek64_file = fseek64_file_func;
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244 pzlib_filefunc_def->zclose_file = fclose_file_func;
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245 pzlib_filefunc_def->zerror_file = ferror_file_func;
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246 pzlib_filefunc_def->opaque = NULL;
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247 }
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