1- /* ioapi.c -- IO base function header for compress/uncompress .zip
2- files using zlib + zip or unzip API
1+ /* ioapi.h -- IO base function header for compress/uncompress .zip
2+ part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
33
4- Version 1.01e, February 12th, 2005
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
510
6- Copyright (C) 1998-2005 Gilles Vollant
711*/
812
9- #include <stdio.h>
10- #include <stdlib.h>
11- #include <string.h>
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 ) || defined(__HAIKU__ ) || defined(MINIZIP_FOPEN_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+
1228
13- #include "zlib.h"
1429#include "ioapi.h"
1530
31+ voidpf call_zopen64 (const zlib_filefunc64_32_def * pfilefunc , const void * filename , int mode ) {
32+ if (pfilefunc -> zfile_func64 .zopen64_file != NULL )
33+ return (* (pfilefunc -> zfile_func64 .zopen64_file ))(pfilefunc -> zfile_func64 .opaque , filename , mode );
34+ else {
35+ return (* (pfilefunc -> zopen32_file ))(pfilefunc -> zfile_func64 .opaque , (const char * )filename , mode );
36+ }
37+ }
1638
39+ long call_zseek64 (const zlib_filefunc64_32_def * pfilefunc , voidpf filestream , ZPOS64_T offset , int origin ) {
40+ if (pfilefunc -> zfile_func64 .zseek64_file != NULL )
41+ return (* (pfilefunc -> zfile_func64 .zseek64_file ))(pfilefunc -> zfile_func64 .opaque , filestream , offset , origin );
42+ else {
43+ uLong offsetTruncated = (uLong )offset ;
44+ if (offsetTruncated != offset )
45+ return -1 ;
46+ else
47+ return (* (pfilefunc -> zseek32_file ))(pfilefunc -> zfile_func64 .opaque , filestream , offsetTruncated , origin );
48+ }
49+ }
1750
18- /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
51+ ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def * pfilefunc , voidpf filestream ) {
52+ if (pfilefunc -> zfile_func64 .zseek64_file != NULL )
53+ return (* (pfilefunc -> zfile_func64 .ztell64_file ))(pfilefunc -> zfile_func64 .opaque , filestream );
54+ else {
55+ uLong tell_uLong = (uLong )(* (pfilefunc -> ztell32_file ))(pfilefunc -> zfile_func64 .opaque , filestream );
56+ if ((tell_uLong ) == MAXU32 )
57+ return (ZPOS64_T )- 1 ;
58+ else
59+ return tell_uLong ;
60+ }
61+ }
1962
20- #ifndef SEEK_CUR
21- #define SEEK_CUR 1
22- #endif
63+ void fill_zlib_filefunc64_32_def_from_filefunc32 (zlib_filefunc64_32_def * p_filefunc64_32 ,
64+ const zlib_filefunc_def * p_filefunc32 ) {
65+ p_filefunc64_32 -> zfile_func64 .zopen64_file = NULL ;
66+ p_filefunc64_32 -> zopen32_file = p_filefunc32 -> zopen_file ;
67+ p_filefunc64_32 -> zfile_func64 .zread_file = p_filefunc32 -> zread_file ;
68+ p_filefunc64_32 -> zfile_func64 .zwrite_file = p_filefunc32 -> zwrite_file ;
69+ p_filefunc64_32 -> zfile_func64 .ztell64_file = NULL ;
70+ p_filefunc64_32 -> zfile_func64 .zseek64_file = NULL ;
71+ p_filefunc64_32 -> zfile_func64 .zclose_file = p_filefunc32 -> zclose_file ;
72+ p_filefunc64_32 -> zfile_func64 .zerror_file = p_filefunc32 -> zerror_file ;
73+ p_filefunc64_32 -> zfile_func64 .opaque = p_filefunc32 -> opaque ;
74+ p_filefunc64_32 -> zseek32_file = p_filefunc32 -> zseek_file ;
75+ p_filefunc64_32 -> ztell32_file = p_filefunc32 -> ztell_file ;
76+ }
2377
24- #ifndef SEEK_END
25- #define SEEK_END 2
26- #endif
2778
28- #ifndef SEEK_SET
29- #define SEEK_SET 0
30- #endif
79+ static voidpf ZCALLBACK fopen_file_func (voidpf opaque , const char * filename , int mode ) {
80+ FILE * file = NULL ;
81+ const char * mode_fopen = NULL ;
82+ (void )opaque ;
83+ if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER ) == ZLIB_FILEFUNC_MODE_READ )
84+ mode_fopen = "rb" ;
85+ else if (mode & ZLIB_FILEFUNC_MODE_EXISTING )
86+ mode_fopen = "r+b" ;
87+ else if (mode & ZLIB_FILEFUNC_MODE_CREATE )
88+ mode_fopen = "wb" ;
3189
32- voidpf ZCALLBACK fopen_file_func OF (
33- voidpf opaque ,
34- const char * filename ,
35- int mode ));
36-
37- uLong ZCALLBACK fread_file_func OF (
38- voidpf opaque ,
39- voidpf stream ,
40- void * buf ,
41- uLong size ));
42-
43- uLong ZCALLBACK fwrite_file_func OF (
44- voidpf opaque ,
45- voidpf stream ,
46- const void * buf ,
47- uLong size ));
48-
49- long ZCALLBACK ftell_file_func OF ((
50- voidpf opaque ,
51- voidpf stream ));
52-
53- long ZCALLBACK fseek_file_func OF ((
54- voidpf opaque ,
55- voidpf stream ,
56- uLong offset ,
57- int origin ));
58-
59- int ZCALLBACK fclose_file_func OF (
60- voidpf opaque ,
61- voidpf stream ));
62-
63- int ZCALLBACK ferror_file_func OF (
64- voidpf opaque ,
65- voidpf stream ));
66-
67-
68- voidpf ZCALLBACK fopen_file_func (opaque , filename , mode )
69- voidpf opaque ;
70- const char * filename ;
71- int mode ;
72- {
90+ if ((filename != NULL ) && (mode_fopen != NULL ))
91+ file = fopen (filename , mode_fopen );
92+ return file ;
93+ }
94+
95+ static voidpf ZCALLBACK fopen64_file_func (voidpf opaque , const void * filename , int mode ) {
7396 FILE * file = NULL ;
7497 const char * mode_fopen = NULL ;
98+ (void )opaque ;
7599 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER )== ZLIB_FILEFUNC_MODE_READ )
76100 mode_fopen = "rb" ;
77101 else
@@ -82,51 +106,67 @@ voidpf ZCALLBACK fopen_file_func (opaque, filename, mode)
82106 mode_fopen = "wb" ;
83107
84108 if ((filename != NULL ) && (mode_fopen != NULL ))
85- file = fopen ( filename , mode_fopen );
109+ file = FOPEN_FUNC (( const char * ) filename , mode_fopen );
86110 return file ;
87111}
88112
89113
90- uLong ZCALLBACK fread_file_func (opaque , stream , buf , size )
91- voidpf opaque ;
92- voidpf stream ;
93- void * buf ;
94- uLong size ;
95- {
114+ static uLong ZCALLBACK fread_file_func (voidpf opaque , voidpf stream , void * buf , uLong size ) {
96115 uLong ret ;
116+ (void )opaque ;
97117 ret = (uLong )fread (buf , 1 , (size_t )size , (FILE * )stream );
98118 return ret ;
99119}
100120
101-
102- uLong ZCALLBACK fwrite_file_func (opaque , stream , buf , size )
103- voidpf opaque ;
104- voidpf stream ;
105- const void * buf ;
106- uLong size ;
107- {
121+ static uLong ZCALLBACK fwrite_file_func (voidpf opaque , voidpf stream , const void * buf , uLong size ) {
108122 uLong ret ;
123+ (void )opaque ;
109124 ret = (uLong )fwrite (buf , 1 , (size_t )size , (FILE * )stream );
110125 return ret ;
111126}
112127
113- long ZCALLBACK ftell_file_func (opaque , stream )
114- voidpf opaque ;
115- voidpf stream ;
116- {
128+ static long ZCALLBACK ftell_file_func (voidpf opaque , voidpf stream ) {
117129 long ret ;
130+ (void )opaque ;
118131 ret = ftell ((FILE * )stream );
119132 return ret ;
120133}
121134
122- long ZCALLBACK fseek_file_func (opaque , stream , offset , origin )
123- voidpf opaque ;
124- voidpf stream ;
125- uLong offset ;
126- int origin ;
127- {
135+
136+ static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque , voidpf stream ) {
137+ ZPOS64_T ret ;
138+ (void )opaque ;
139+ ret = (ZPOS64_T )FTELLO_FUNC ((FILE * )stream );
140+ return ret ;
141+ }
142+
143+ static long ZCALLBACK fseek_file_func (voidpf opaque , voidpf stream , uLong offset , int origin ) {
144+ int fseek_origin = 0 ;
145+ long ret ;
146+ (void )opaque ;
147+ switch (origin ) {
148+ case ZLIB_FILEFUNC_SEEK_CUR :
149+ fseek_origin = SEEK_CUR ;
150+ break ;
151+ case ZLIB_FILEFUNC_SEEK_END :
152+ fseek_origin = SEEK_END ;
153+ break ;
154+ case ZLIB_FILEFUNC_SEEK_SET :
155+ fseek_origin = SEEK_SET ;
156+ break ;
157+ default :
158+ return -1 ;
159+ }
160+ ret = 0 ;
161+ if (fseek ((FILE * )stream , (long )offset , fseek_origin ) != 0 )
162+ ret = -1 ;
163+ return ret ;
164+ }
165+
166+ static long ZCALLBACK fseek64_file_func (voidpf opaque , voidpf stream , ZPOS64_T offset , int origin ) {
128167 int fseek_origin = 0 ;
129168 long ret ;
169+ (void )opaque ;
130170 switch (origin )
131171 {
132172 case ZLIB_FILEFUNC_SEEK_CUR :
@@ -141,31 +181,29 @@ long ZCALLBACK fseek_file_func (opaque, stream, offset, origin)
141181 default : return -1 ;
142182 }
143183 ret = 0 ;
144- fseek ((FILE * )stream , offset , fseek_origin );
184+
185+ if (FSEEKO_FUNC ((FILE * )stream , (z_off64_t )offset , fseek_origin ) != 0 )
186+ ret = -1 ;
187+
145188 return ret ;
146189}
147190
148- int ZCALLBACK fclose_file_func (opaque , stream )
149- voidpf opaque ;
150- voidpf stream ;
151- {
191+
192+ static int ZCALLBACK fclose_file_func (voidpf opaque , voidpf stream ) {
152193 int ret ;
194+ (void )opaque ;
153195 ret = fclose ((FILE * )stream );
154196 return ret ;
155197}
156198
157- int ZCALLBACK ferror_file_func (opaque , stream )
158- voidpf opaque ;
159- voidpf stream ;
160- {
199+ static int ZCALLBACK ferror_file_func (voidpf opaque , voidpf stream ) {
161200 int ret ;
201+ (void )opaque ;
162202 ret = ferror ((FILE * )stream );
163203 return ret ;
164204}
165205
166- void fill_fopen_filefunc (pzlib_filefunc_def )
167- zlib_filefunc_def * pzlib_filefunc_def ;
168- {
206+ void fill_fopen_filefunc (zlib_filefunc_def * pzlib_filefunc_def ) {
169207 pzlib_filefunc_def -> zopen_file = fopen_file_func ;
170208 pzlib_filefunc_def -> zread_file = fread_file_func ;
171209 pzlib_filefunc_def -> zwrite_file = fwrite_file_func ;
@@ -175,3 +213,14 @@ void fill_fopen_filefunc (pzlib_filefunc_def)
175213 pzlib_filefunc_def -> zerror_file = ferror_file_func ;
176214 pzlib_filefunc_def -> opaque = NULL ;
177215}
216+
217+ void fill_fopen64_filefunc (zlib_filefunc64_def * pzlib_filefunc_def ) {
218+ pzlib_filefunc_def -> zopen64_file = fopen64_file_func ;
219+ pzlib_filefunc_def -> zread_file = fread_file_func ;
220+ pzlib_filefunc_def -> zwrite_file = fwrite_file_func ;
221+ pzlib_filefunc_def -> ztell64_file = ftell64_file_func ;
222+ pzlib_filefunc_def -> zseek64_file = fseek64_file_func ;
223+ pzlib_filefunc_def -> zclose_file = fclose_file_func ;
224+ pzlib_filefunc_def -> zerror_file = ferror_file_func ;
225+ pzlib_filefunc_def -> opaque = NULL ;
226+ }
0 commit comments