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
call_zopen64(const zlib_filefunc64_32_def * pfilefunc,const void * filename,int mode)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
call_zseek64(const zlib_filefunc64_32_def * pfilefunc,voidpf filestream,ZPOS64_T offset,int origin)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
call_ztell64(const zlib_filefunc64_32_def * pfilefunc,voidpf filestream)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 #ifndef __REACTOS__
fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def * p_filefunc64_32,const zlib_filefunc_def * p_filefunc32)70 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
71 {
72 p_filefunc64_32->zfile_func64.zopen64_file = NULL;
73 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
74 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
75 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
76 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
77 p_filefunc64_32->zfile_func64.ztell64_file = NULL;
78 p_filefunc64_32->zfile_func64.zseek64_file = NULL;
79 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
80 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
81 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
82 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
83 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
84 }
85
86
87
88 static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
89 static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
90 static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
91 static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
92 static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
93 static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
94 static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
95
fopen_file_func(voidpf opaque,const char * filename,int mode)96 static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
97 {
98 FILE* file = NULL;
99 const char* mode_fopen = NULL;
100 (void)opaque;
101 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
102 mode_fopen = "rb";
103 else
104 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
105 mode_fopen = "r+b";
106 else
107 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
108 mode_fopen = "wb";
109
110 if ((filename!=NULL) && (mode_fopen != NULL))
111 file = fopen(filename, mode_fopen);
112 return file;
113 }
114
fopen64_file_func(voidpf opaque,const void * filename,int mode)115 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
116 {
117 FILE* file = NULL;
118 const char* mode_fopen = NULL;
119 (void)opaque;
120 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
121 mode_fopen = "rb";
122 else
123 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
124 mode_fopen = "r+b";
125 else
126 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
127 mode_fopen = "wb";
128
129 if ((filename!=NULL) && (mode_fopen != NULL))
130 file = FOPEN_FUNC((const char*)filename, mode_fopen);
131 return file;
132 }
133
134
fread_file_func(voidpf opaque,voidpf stream,void * buf,uLong size)135 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
136 {
137 uLong ret;
138 (void)opaque;
139 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
140 return ret;
141 }
142
fwrite_file_func(voidpf opaque,voidpf stream,const void * buf,uLong size)143 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
144 {
145 uLong ret;
146 (void)opaque;
147 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
148 return ret;
149 }
150
ftell_file_func(voidpf opaque,voidpf stream)151 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
152 {
153 long ret;
154 (void)opaque;
155 ret = ftell((FILE *)stream);
156 return ret;
157 }
158
159
ftell64_file_func(voidpf opaque,voidpf stream)160 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
161 {
162 ZPOS64_T ret;
163 (void)opaque;
164 ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
165 return ret;
166 }
167
fseek_file_func(voidpf opaque,voidpf stream,uLong offset,int origin)168 static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)
169 {
170 int fseek_origin=0;
171 long ret;
172 (void)opaque;
173 switch (origin)
174 {
175 case ZLIB_FILEFUNC_SEEK_CUR :
176 fseek_origin = SEEK_CUR;
177 break;
178 case ZLIB_FILEFUNC_SEEK_END :
179 fseek_origin = SEEK_END;
180 break;
181 case ZLIB_FILEFUNC_SEEK_SET :
182 fseek_origin = SEEK_SET;
183 break;
184 default: return -1;
185 }
186 ret = 0;
187 if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0)
188 ret = -1;
189 return ret;
190 }
191
fseek64_file_func(voidpf opaque,voidpf stream,ZPOS64_T offset,int origin)192 static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
193 {
194 int fseek_origin=0;
195 long ret;
196 (void)opaque;
197 switch (origin)
198 {
199 case ZLIB_FILEFUNC_SEEK_CUR :
200 fseek_origin = SEEK_CUR;
201 break;
202 case ZLIB_FILEFUNC_SEEK_END :
203 fseek_origin = SEEK_END;
204 break;
205 case ZLIB_FILEFUNC_SEEK_SET :
206 fseek_origin = SEEK_SET;
207 break;
208 default: return -1;
209 }
210 ret = 0;
211
212 if(FSEEKO_FUNC((FILE *)stream, (z_off_t)offset, fseek_origin) != 0)
213 ret = -1;
214
215 return ret;
216 }
217
218
fclose_file_func(voidpf opaque,voidpf stream)219 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
220 {
221 int ret;
222 (void)opaque;
223 ret = fclose((FILE *)stream);
224 return ret;
225 }
226
ferror_file_func(voidpf opaque,voidpf stream)227 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
228 {
229 int ret;
230 (void)opaque;
231 ret = ferror((FILE *)stream);
232 return ret;
233 }
234
fill_fopen_filefunc(pzlib_filefunc_def)235 void fill_fopen_filefunc (pzlib_filefunc_def)
236 zlib_filefunc_def* pzlib_filefunc_def;
237 {
238 pzlib_filefunc_def->zopen_file = fopen_file_func;
239 pzlib_filefunc_def->zread_file = fread_file_func;
240 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
241 pzlib_filefunc_def->ztell_file = ftell_file_func;
242 pzlib_filefunc_def->zseek_file = fseek_file_func;
243 pzlib_filefunc_def->zclose_file = fclose_file_func;
244 pzlib_filefunc_def->zerror_file = ferror_file_func;
245 pzlib_filefunc_def->opaque = NULL;
246 }
247
fill_fopen64_filefunc(zlib_filefunc64_def * pzlib_filefunc_def)248 void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def)
249 {
250 pzlib_filefunc_def->zopen64_file = fopen64_file_func;
251 pzlib_filefunc_def->zread_file = fread_file_func;
252 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
253 pzlib_filefunc_def->ztell64_file = ftell64_file_func;
254 pzlib_filefunc_def->zseek64_file = fseek64_file_func;
255 pzlib_filefunc_def->zclose_file = fclose_file_func;
256 pzlib_filefunc_def->zerror_file = ferror_file_func;
257 pzlib_filefunc_def->opaque = NULL;
258 }
259
260 #endif
261