xref: /netbsd/common/dist/zlib/contrib/minizip/ioapi.c (revision 6164d288)
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 
fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def * p_filefunc64_32,const zlib_filefunc_def * p_filefunc32)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 
fopen_file_func(voidpf opaque,const char * filename,int mode)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     (void)opaque;
100     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
101         mode_fopen = "rb";
102     else
103     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
104         mode_fopen = "r+b";
105     else
106     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
107         mode_fopen = "wb";
108 
109     if ((filename!=NULL) && (mode_fopen != NULL))
110         file = fopen(filename, mode_fopen);
111     return file;
112 }
113 
fopen64_file_func(voidpf opaque,const void * filename,int mode)114 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
115 {
116     FILE* file = NULL;
117     const char* mode_fopen = NULL;
118     (void)opaque;
119     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
120         mode_fopen = "rb";
121     else
122     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
123         mode_fopen = "r+b";
124     else
125     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
126         mode_fopen = "wb";
127 
128     if ((filename!=NULL) && (mode_fopen != NULL))
129         file = FOPEN_FUNC((const char*)filename, mode_fopen);
130     return file;
131 }
132 
133 
fread_file_func(voidpf opaque,voidpf stream,void * buf,uLong size)134 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
135 {
136     uLong ret;
137     (void)opaque;
138     ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
139     return ret;
140 }
141 
fwrite_file_func(voidpf opaque,voidpf stream,const void * buf,uLong size)142 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
143 {
144     uLong ret;
145     (void)opaque;
146     ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
147     return ret;
148 }
149 
ftell_file_func(voidpf opaque,voidpf stream)150 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
151 {
152     long ret;
153     (void)opaque;
154     ret = ftell((FILE *)stream);
155     return ret;
156 }
157 
158 
ftell64_file_func(voidpf opaque,voidpf stream)159 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
160 {
161     ZPOS64_T ret;
162     (void)opaque;
163     ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
164     return ret;
165 }
166 
fseek_file_func(voidpf opaque,voidpf stream,uLong offset,int origin)167 static long ZCALLBACK fseek_file_func (voidpf  opaque, voidpf stream, uLong offset, int origin)
168 {
169     int fseek_origin=0;
170     long ret;
171     (void)opaque;
172     switch (origin)
173     {
174     case ZLIB_FILEFUNC_SEEK_CUR :
175         fseek_origin = SEEK_CUR;
176         break;
177     case ZLIB_FILEFUNC_SEEK_END :
178         fseek_origin = SEEK_END;
179         break;
180     case ZLIB_FILEFUNC_SEEK_SET :
181         fseek_origin = SEEK_SET;
182         break;
183     default: return -1;
184     }
185     ret = 0;
186     if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0)
187         ret = -1;
188     return ret;
189 }
190 
fseek64_file_func(voidpf opaque,voidpf stream,ZPOS64_T offset,int origin)191 static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T offset, int origin)
192 {
193     int fseek_origin=0;
194     long ret;
195     (void)opaque;
196     switch (origin)
197     {
198     case ZLIB_FILEFUNC_SEEK_CUR :
199         fseek_origin = SEEK_CUR;
200         break;
201     case ZLIB_FILEFUNC_SEEK_END :
202         fseek_origin = SEEK_END;
203         break;
204     case ZLIB_FILEFUNC_SEEK_SET :
205         fseek_origin = SEEK_SET;
206         break;
207     default: return -1;
208     }
209     ret = 0;
210 
211     if(FSEEKO_FUNC((FILE *)stream, (z_off_t)offset, fseek_origin) != 0)
212                         ret = -1;
213 
214     return ret;
215 }
216 
217 
fclose_file_func(voidpf opaque,voidpf stream)218 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
219 {
220     int ret;
221     (void)opaque;
222     ret = fclose((FILE *)stream);
223     return ret;
224 }
225 
ferror_file_func(voidpf opaque,voidpf stream)226 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
227 {
228     int ret;
229     (void)opaque;
230     ret = ferror((FILE *)stream);
231     return ret;
232 }
233 
fill_fopen_filefunc(pzlib_filefunc_def)234 void fill_fopen_filefunc (pzlib_filefunc_def)
235   zlib_filefunc_def* pzlib_filefunc_def;
236 {
237     pzlib_filefunc_def->zopen_file = fopen_file_func;
238     pzlib_filefunc_def->zread_file = fread_file_func;
239     pzlib_filefunc_def->zwrite_file = fwrite_file_func;
240     pzlib_filefunc_def->ztell_file = ftell_file_func;
241     pzlib_filefunc_def->zseek_file = fseek_file_func;
242     pzlib_filefunc_def->zclose_file = fclose_file_func;
243     pzlib_filefunc_def->zerror_file = ferror_file_func;
244     pzlib_filefunc_def->opaque = NULL;
245 }
246 
fill_fopen64_filefunc(zlib_filefunc64_def * pzlib_filefunc_def)247 void fill_fopen64_filefunc (zlib_filefunc64_def*  pzlib_filefunc_def)
248 {
249     pzlib_filefunc_def->zopen64_file = fopen64_file_func;
250     pzlib_filefunc_def->zread_file = fread_file_func;
251     pzlib_filefunc_def->zwrite_file = fwrite_file_func;
252     pzlib_filefunc_def->ztell64_file = ftell64_file_func;
253     pzlib_filefunc_def->zseek64_file = fseek64_file_func;
254     pzlib_filefunc_def->zclose_file = fclose_file_func;
255     pzlib_filefunc_def->zerror_file = ferror_file_func;
256     pzlib_filefunc_def->opaque = NULL;
257 }
258