1 /* ioapi.c -- IO base function header for compress/uncompress .zip
2 part of the MiniZip project
4 Copyright (C) 2012-2017 Nathan Moinvaziri
5 https://github.com/nmoinvaz/minizip
6 Modifications for Zip64 support
7 Copyright (C) 2009-2010 Mathias Svensson
9 Copyright (C) 1998-2010 Gilles Vollant
10 http://www.winimage.com/zLibDll/minizip.html
12 This program is distributed under the terms of the same license as zlib.
13 See the accompanying LICENSE file for the full text of the license.
19 #if defined unix || defined __APPLE__
20 #include <sys/types.h>
27 # define snprintf _snprintf
30 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 return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque, (const char*)filename, mode);
37 voidpf call_zopendisk64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint32_t number_disk, int mode)
39 if (pfilefunc->zfile_func64.zopendisk64_file != NULL)
40 return (*(pfilefunc->zfile_func64.zopendisk64_file)) (pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
41 return (*(pfilefunc->zopendisk32_file))(pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
44 long call_zseek64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint64_t offset, int origin)
46 uint32_t offset_truncated = 0;
47 if (pfilefunc->zfile_func64.zseek64_file != NULL)
48 return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
49 offset_truncated = (uint32_t)offset;
50 if (offset_truncated != offset)
52 return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream, offset_truncated, origin);
55 uint64_t call_ztell64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream)
58 if (pfilefunc->zfile_func64.zseek64_file != NULL)
59 return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque, filestream);
60 position = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque, filestream);
61 if ((position) == UINT32_MAX)
66 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def *p_filefunc64_32, const zlib_filefunc_def *p_filefunc32)
68 p_filefunc64_32->zfile_func64.zopen64_file = NULL;
69 p_filefunc64_32->zfile_func64.zopendisk64_file = NULL;
70 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
71 p_filefunc64_32->zopendisk32_file = p_filefunc32->zopendisk_file;
72 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
73 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
74 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
75 p_filefunc64_32->zfile_func64.ztell64_file = NULL;
76 p_filefunc64_32->zfile_func64.zseek64_file = NULL;
77 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
78 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
79 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
80 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
81 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
84 static uint32_t ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size);
85 static uint32_t ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void *buf, uint32_t size);
86 static uint64_t ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream);
87 static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, uint64_t offset, int origin);
88 static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream);
89 static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream);
98 static voidpf file_build_ioposix(FILE *file, const char *filename)
100 FILE_IOPOSIX *ioposix = NULL;
103 ioposix = (FILE_IOPOSIX*)malloc(sizeof(FILE_IOPOSIX));
104 ioposix->file = file;
105 ioposix->filenameLength = (int)strlen(filename) + 1;
106 ioposix->filename = (char*)malloc(ioposix->filenameLength * sizeof(char));
107 strncpy((char*)ioposix->filename, filename, ioposix->filenameLength);
108 return (voidpf)ioposix;
111 static voidpf ZCALLBACK fopen64_file_func(ZIP_UNUSED voidpf opaque, const void *filename, int mode)
114 const char *mode_fopen = NULL;
115 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
117 else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
119 else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
122 if ((filename != NULL) && (mode_fopen != NULL))
124 file = fopen64((const char*)filename, mode_fopen);
125 return file_build_ioposix(file, (const char*)filename);
130 static voidpf ZCALLBACK fopendisk64_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
132 FILE_IOPOSIX *ioposix = NULL;
133 char *diskFilename = NULL;
139 ioposix = (FILE_IOPOSIX*)stream;
140 diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
141 strncpy(diskFilename, (const char*)ioposix->filename, ioposix->filenameLength);
142 for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
144 if (diskFilename[i] != '.')
146 snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02u", number_disk + 1);
150 ret = fopen64_file_func(opaque, diskFilename, mode);
155 static uint32_t ZCALLBACK fread_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, void* buf, uint32_t size)
157 FILE_IOPOSIX *ioposix = NULL;
158 uint32_t read = (uint32_t)-1;
161 ioposix = (FILE_IOPOSIX*)stream;
162 read = (uint32_t)fread(buf, 1, (size_t)size, ioposix->file);
166 static uint32_t ZCALLBACK fwrite_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, const void *buf, uint32_t size)
168 FILE_IOPOSIX *ioposix = NULL;
169 uint32_t written = (uint32_t)-1;
172 ioposix = (FILE_IOPOSIX*)stream;
173 written = (uint32_t)fwrite(buf, 1, (size_t)size, ioposix->file);
177 static uint64_t ZCALLBACK ftell64_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
179 FILE_IOPOSIX *ioposix = NULL;
180 uint64_t ret = (uint64_t)-1;
183 ioposix = (FILE_IOPOSIX*)stream;
184 ret = ftello64(ioposix->file);
188 static long ZCALLBACK fseek64_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, uint64_t offset, int origin)
190 FILE_IOPOSIX *ioposix = NULL;
191 int fseek_origin = 0;
196 ioposix = (FILE_IOPOSIX*)stream;
200 case ZLIB_FILEFUNC_SEEK_CUR:
201 fseek_origin = SEEK_CUR;
203 case ZLIB_FILEFUNC_SEEK_END:
204 fseek_origin = SEEK_END;
206 case ZLIB_FILEFUNC_SEEK_SET:
207 fseek_origin = SEEK_SET;
213 if (fseeko64(ioposix->file, offset, fseek_origin) != 0)
219 static int ZCALLBACK fclose_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
221 FILE_IOPOSIX *ioposix = NULL;
225 ioposix = (FILE_IOPOSIX*)stream;
226 if (ioposix->filename != NULL)
227 free(ioposix->filename);
228 ret = fclose(ioposix->file);
233 static int ZCALLBACK ferror_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
235 FILE_IOPOSIX *ioposix = NULL;
239 ioposix = (FILE_IOPOSIX*)stream;
240 ret = ferror(ioposix->file);
244 void fill_fopen64_filefunc(zlib_filefunc64_def *pzlib_filefunc_def)
246 pzlib_filefunc_def->zopen64_file = fopen64_file_func;
247 pzlib_filefunc_def->zopendisk64_file = fopendisk64_file_func;
248 pzlib_filefunc_def->zread_file = fread_file_func;
249 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
250 pzlib_filefunc_def->ztell64_file = ftell64_file_func;
251 pzlib_filefunc_def->zseek64_file = fseek64_file_func;
252 pzlib_filefunc_def->zclose_file = fclose_file_func;
253 pzlib_filefunc_def->zerror_file = ferror_file_func;
254 pzlib_filefunc_def->opaque = NULL;