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 }