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439 lines (378 loc) · 12 KB
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/* minizip.c
Version 1.1, February 14h, 2010
sample part of the MiniZip project
Copyright (C) 1998-2010 Gilles Vollant
http://www.winimage.com/zLibDll/minizip.html
Modifications of Unzip for Zip64
Copyright (C) 2007-2008 Even Rouault
Modifications for Zip64 support
Copyright (C) 2009-2010 Mathias Svensson
http://result42.com
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
# ifndef __USE_FILE_OFFSET64
# define __USE_FILE_OFFSET64
# endif
# ifndef __USE_LARGEFILE64
# define __USE_LARGEFILE64
# endif
# ifndef _LARGEFILE64_SOURCE
# define _LARGEFILE64_SOURCE
# endif
# ifndef _FILE_OFFSET_BIT
# define _FILE_OFFSET_BIT 64
# endif
#endif
#ifdef __APPLE__
/* In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions */
# define FOPEN_FUNC(filename, mode) fopen(filename, mode)
# define FTELLO_FUNC(stream) ftello(stream)
# define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
#else
# define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
# define FTELLO_FUNC(stream) ftello64(stream)
# define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>
#ifdef _WIN32
# include <direct.h>
# include <io.h>
#else
# include <unistd.h>
# include <utime.h>
# include <sys/types.h>
# include <sys/stat.h>
#endif
#include "zip.h"
#ifdef _WIN32
# define USEWIN32IOAPI
# include "iowin32.h"
#endif
#define WRITEBUFFERSIZE (16384)
#define MAXFILENAME (256)
uLong filetime(const char *filename, tm_zip *tmzip, uLong *dostime)
{
int ret = 0;
#ifdef _WIN32
FILETIME ftLocal;
HANDLE hFind;
WIN32_FIND_DATAA ff32;
hFind = FindFirstFileA(filename, &ff32);
if (hFind != INVALID_HANDLE_VALUE)
{
FileTimeToLocalFileTime(&(ff32.ftLastWriteTime), &ftLocal);
FileTimeToDosDateTime(&ftLocal,((LPWORD)dostime)+1,((LPWORD)dostime)+0);
FindClose(hFind);
ret = 1;
}
#else
#if defined unix || defined __APPLE__
struct stat s = {0};
struct tm* filedate;
time_t tm_t = 0;
if (strcmp(filename,"-") != 0)
{
char name[MAXFILENAME+1];
int len = strlen(filename);
if (len > MAXFILENAME)
len = MAXFILENAME;
strncpy(name, filename, MAXFILENAME - 1);
name[MAXFILENAME] = 0;
if (name[len - 1] == '/')
name[len - 1] = 0;
/* not all systems allow stat'ing a file with / appended */
if (stat(name,&s) == 0)
{
tm_t = s.st_mtime;
ret = 1;
}
}
filedate = localtime(&tm_t);
tmzip->tm_sec = filedate->tm_sec;
tmzip->tm_min = filedate->tm_min;
tmzip->tm_hour = filedate->tm_hour;
tmzip->tm_mday = filedate->tm_mday;
tmzip->tm_mon = filedate->tm_mon ;
tmzip->tm_year = filedate->tm_year;
#endif
#endif
return ret;
}
int check_file_exists(const char* filename)
{
FILE* ftestexist = FOPEN_FUNC(filename, "rb");
if (ftestexist == NULL)
return 0;
fclose(ftestexist);
return 1;
}
int is_large_file(const char* filename)
{
ZPOS64_T pos = 0;
FILE* pFile = FOPEN_FUNC(filename, "rb");
if (pFile == NULL)
return 0;
FSEEKO_FUNC(pFile, 0, SEEK_END);
pos = FTELLO_FUNC(pFile);
fclose(pFile);
printf("File : %s is %lld bytes\n", filename, pos);
return (pos >= 0xffffffff);
}
/* Calculate the CRC32 of a file, because to encrypt a file, we need known the CRC32 of the file before */
int get_file_crc(const char* filenameinzip, void *buf, unsigned long size_buf, unsigned long* result_crc)
{
FILE *fin = NULL;
unsigned long calculate_crc = 0;
unsigned long size_read = 0;
int err = ZIP_OK;
fin = FOPEN_FUNC(filenameinzip,"rb");
if (fin == NULL)
err = ZIP_ERRNO;
else
{
do
{
size_read = (int)fread(buf,1,size_buf,fin);
if ((size_read < size_buf) && (feof(fin) == 0))
{
printf("error in reading %s\n",filenameinzip);
err = ZIP_ERRNO;
}
if (size_read > 0)
calculate_crc = crc32(calculate_crc,buf,size_read);
}
while ((err == ZIP_OK) && (size_read > 0));
}
if (fin)
fclose(fin);
printf("file %s crc %lx\n", filenameinzip, calculate_crc);
*result_crc = calculate_crc;
return err;
}
void do_banner()
{
printf("MiniZip 1.1, demo of zLib + MiniZip64 package, written by Gilles Vollant\n");
printf("more info on MiniZip at http://www.winimage.com/zLibDll/minizip.html\n\n");
}
void do_help()
{
printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] [-j] file.zip [files_to_add]\n\n" \
" -o Overwrite existing file.zip\n" \
" -a Append to existing file.zip\n" \
" -0 Store only\n" \
" -1 Compress faster\n" \
" -9 Compress better\n\n" \
" -j exclude path. store only the file name.\n\n");
}
int main(int argc, char *argv[])
{
zipFile zf = NULL;
#ifdef USEWIN32IOAPI
zlib_filefunc64_def ffunc = {0};
#endif
char *zipfilename = NULL;
const char* password = NULL;
void* buf = NULL;
int size_buf = WRITEBUFFERSIZE;
int zipfilenamearg = 0;
int errclose = 0;
int err = 0;
int i = 0;
int opt_overwrite = APPEND_STATUS_CREATE;
int opt_compress_level = Z_DEFAULT_COMPRESSION;
int opt_exclude_path = 0;
do_banner();
if (argc == 1)
{
do_help();
return 0;
}
/* Parse command line options */
for (i = 1; i < argc; i++)
{
if ((*argv[i]) == '-')
{
const char *p = argv[i]+1;
while ((*p) != '\0')
{
char c = *(p++);;
if ((c == 'o') || (c == 'O'))
opt_overwrite = APPEND_STATUS_CREATEAFTER;
if ((c == 'a') || (c == 'A'))
opt_overwrite = APPEND_STATUS_ADDINZIP;
if ((c >= '0') && (c <= '9'))
opt_compress_level = (c - '0');
if ((c == 'j') || (c == 'J'))
opt_exclude_path = 1;
if (((c == 'p') || (c == 'P')) && (i+1 < argc))
{
password=argv[i+1];
i++;
}
}
}
else
{
if (zipfilenamearg == 0)
zipfilenamearg = i;
}
}
if (zipfilenamearg == 0)
{
do_help();
return 0;
}
zipfilename = argv[zipfilenamearg];
buf = (void*)malloc(size_buf);
if (buf == NULL)
{
printf("Error allocating memory\n");
return ZIP_INTERNALERROR;
}
if (opt_overwrite == 2)
{
/* If the file don't exist, we not append file */
if (check_file_exists(zipfilename) == 0)
opt_overwrite = 1;
}
else if (opt_overwrite == 0)
{
/* If ask the user what to do because append and overwrite args not set */
if (check_file_exists(zipfilename) != 0)
{
char rep = 0;
do
{
char answer[128];
printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ", zipfilename);
if (scanf("%1s", answer) != 1)
exit(EXIT_FAILURE);
rep = answer[0];
if ((rep >= 'a') && (rep <= 'z'))
rep -= 0x20;
}
while ((rep != 'Y') && (rep != 'N') && (rep != 'A'));
if (rep == 'A')
opt_overwrite = 2;
else if (rep == 'N')
{
do_help();
free(buf);
return 0;
}
}
}
#ifdef USEWIN32IOAPI
fill_win32_filefunc64A(&ffunc);
zf = zipOpen2_64(zipfilename, opt_overwrite, NULL, &ffunc);
#else
zf = zipOpen64(zipfilename, opt_overwrite);
#endif
if (zf == NULL)
{
printf("error opening %s\n", zipfilename);
err = ZIP_ERRNO;
}
else
printf("creating %s\n", zipfilename);
/* Go through command line args looking for files to add to zip */
for (i = zipfilenamearg + 1; (i < argc) && (err == ZIP_OK); i++)
{
FILE *fin = NULL;
int size_read = 0;
const char* filenameinzip = argv[i];
const char *savefilenameinzip;
zip_fileinfo zi = {0};
unsigned long crcFile = 0;
int zip64 = 0;
/* Skip command line options */
if ((((*(argv[i])) == '-') || ((*(argv[i])) == '/')) && (strlen(argv[i]) == 2) &&
((argv[i][1] == 'o') || (argv[i][1] == 'O') || (argv[i][1] == 'a') || (argv[i][1] == 'A') ||
(argv[i][1] == 'p') || (argv[i][1] == 'P') || ((argv[i][1] >= '0') && (argv[i][1] <= '9'))))
continue;
/* Get information about the file on disk so we can store it in zip */
filetime(filenameinzip, &zi.tmz_date, &zi.dosDate);
if ((password != NULL) && (err == ZIP_OK))
err = get_file_crc(filenameinzip, buf, size_buf, &crcFile);
zip64 = is_large_file(filenameinzip);
/* Construct the filename that our file will be stored in the zip as.
The path name saved, should not include a leading slash.
If it did, windows/xp and dynazip couldn't read the zip file. */
savefilenameinzip = filenameinzip;
while (savefilenameinzip[0] == '\\' || savefilenameinzip[0] == '/')
savefilenameinzip++;
/* Should the file be stored with any path info at all? */
if (opt_exclude_path)
{
const char *tmpptr = NULL;
const char *lastslash = 0;
for (tmpptr = savefilenameinzip; *tmpptr; tmpptr++)
{
if (*tmpptr == '\\' || *tmpptr == '/')
lastslash = tmpptr;
}
if (lastslash != NULL)
savefilenameinzip = lastslash + 1; /* base filename follows last slash. */
}
/* Add to zip file */
err = zipOpenNewFileInZip3_64(zf, savefilenameinzip, &zi,
NULL, 0, NULL, 0, NULL /* comment*/,
(opt_compress_level != 0) ? Z_DEFLATED : 0,
opt_compress_level,0,
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
password, crcFile, zip64);
if (err != ZIP_OK)
printf("error in opening %s in zipfile (%d)\n", filenameinzip, err);
else
{
fin = FOPEN_FUNC(filenameinzip, "rb");
if (fin == NULL)
{
err = ZIP_ERRNO;
printf("error in opening %s for reading\n", filenameinzip);
}
}
if (err == ZIP_OK)
{
/* Read contents of file and write it to zip */
do
{
size_read = (int)fread(buf, 1, size_buf, fin);
if ((size_read < size_buf) && (feof(fin) == 0))
{
printf("error in reading %s\n",filenameinzip);
err = ZIP_ERRNO;
}
if (size_read > 0)
{
err = zipWriteInFileInZip(zf, buf, size_read);
if (err < 0)
printf("error in writing %s in the zipfile (%d)\n", filenameinzip, err);
}
}
while ((err == ZIP_OK) && (size_read > 0));
}
if (fin)
fclose(fin);
if (err < 0)
err = ZIP_ERRNO;
else
{
err = zipCloseFileInZip(zf);
if (err != ZIP_OK)
printf("error in closing %s in the zipfile (%d)\n", filenameinzip, err);
}
}
errclose = zipClose(zf, NULL);
if (errclose != ZIP_OK)
printf("error in closing %s (%d)\n", zipfilename, errclose);
free(buf);
return err;
}