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zlib/contrib/minizip/minizip.c

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/*
minizip.c
Version 1.1, February 14h, 2010
sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
Modifications of Unzip for Zip64
Copyright (C) 2007-2008 Even Rouault
Modifications for Zip64 support on both zip and unzip
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
*/
#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
#if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
// 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)
#ifdef _WIN32
/* f: name of file to get info on, tmzip: return value: access,
modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
int ret = 0;
{
FILETIME ftLocal;
HANDLE hFind;
WIN32_FIND_DATAA ff32;
hFind = FindFirstFileA(f,&ff32);
if (hFind != INVALID_HANDLE_VALUE)
{
FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal);
FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0);
FindClose(hFind);
ret = 1;
}
}
return ret;
}
#else
#if defined(unix) || defined(__APPLE__)
/* f: name of file to get info on, tmzip: return value: access,
modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
(void)dt;
int ret=0;
struct stat s; /* results of stat() */
struct tm* filedate;
time_t tm_t=0;
if (strcmp(f,"-")!=0)
{
char name[MAXFILENAME+1];
size_t len = strlen(f);
if (len > MAXFILENAME)
len = MAXFILENAME;
strncpy(name, f,MAXFILENAME-1);
/* strncpy doesn't append the trailing NULL, of the string is too long. */
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;
return ret;
}
#else
/* f: name of file to get info on, tmzip: return value: access,
modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
(void)f;
(void)tmzip;
(void)dt;
return 0;
}
#endif
#endif
static int check_exist_file(const char* filename) {
FILE* ftestexist;
int ret = 1;
ftestexist = FOPEN_FUNC(filename,"rb");
if (ftestexist==NULL)
ret = 0;
else
fclose(ftestexist);
return ret;
}
static void do_banner(void) {
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");
}
static void do_help(void) {
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");
}
/* calculate the CRC32 of a file,
because to encrypt a file, we need known the CRC32 of the file before */
static int getFileCrc(const char* filenameinzip, void* buf, unsigned long size_buf, unsigned long* result_crc) {
unsigned long calculate_crc=0;
int err=ZIP_OK;
FILE * fin = FOPEN_FUNC(filenameinzip,"rb");
unsigned long size_read = 0;
/* unsigned long total_read = 0; */
if (fin==NULL)
{
err = ZIP_ERRNO;
}
if (err == ZIP_OK)
do
{
err = ZIP_OK;
size_read = fread(buf,1,size_buf,fin);
if (size_read < size_buf)
if (feof(fin)==0)
{
printf("error in reading %s\n",filenameinzip);
err = ZIP_ERRNO;
}
if (size_read>0)
calculate_crc = crc32_z(calculate_crc,buf,size_read);
/* total_read += size_read; */
} while ((err == ZIP_OK) && (size_read>0));
if (fin)
fclose(fin);
*result_crc=calculate_crc;
printf("file %s crc %lx\n", filenameinzip, calculate_crc);
return err;
}
static int isLargeFile(const char* filename) {
int largeFile = 0;
ZPOS64_T pos = 0;
FILE* pFile = FOPEN_FUNC(filename, "rb");
if(pFile != NULL)
{
FSEEKO_FUNC(pFile, 0, SEEK_END);
pos = (ZPOS64_T)FTELLO_FUNC(pFile);
printf("File : %s is %llu bytes\n", filename, pos);
if(pos >= 0xffffffff)
largeFile = 1;
fclose(pFile);
}
return largeFile;
}
int main(int argc, char *argv[]) {
int i;
int opt_overwrite=0;
int opt_compress_level=Z_DEFAULT_COMPRESSION;
int opt_exclude_path=0;
int zipfilenamearg = 0;
char filename_try[MAXFILENAME+16];
int zipok;
int err=0;
size_t size_buf=0;
void* buf=NULL;
const char* password=NULL;
do_banner();
if (argc==1)
{
do_help();
return 0;
}
else
{
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 = 1;
if ((c=='a') || (c=='A'))
opt_overwrite = 2;
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 ;
}
}
}
}
size_buf = WRITEBUFFERSIZE;
buf = (void*)malloc(size_buf);
if (buf==NULL)
{
printf("Error allocating memory\n");
return ZIP_INTERNALERROR;
}
if (zipfilenamearg==0)
{
zipok=0;
}
else
{
int i,len;
int dot_found=0;
zipok = 1 ;
strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
/* strncpy doesn't append the trailing NULL, of the string is too long. */
filename_try[ MAXFILENAME ] = '\0';
len=(int)strlen(filename_try);
for (i=0;i<len;i++)
if (filename_try[i]=='.')
dot_found=1;
if (dot_found==0)
strcat(filename_try,".zip");
if (opt_overwrite==2)
{
/* if the file don't exist, we not append file */
if (check_exist_file(filename_try)==0)
opt_overwrite=1;
}
else
if (opt_overwrite==0)
if (check_exist_file(filename_try)!=0)
{
char rep=0;
do
{
char answer[128];
int ret;
printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
ret = scanf("%1s",answer);
if (ret != 1)
{
exit(EXIT_FAILURE);
}
rep = answer[0] ;
if ((rep>='a') && (rep<='z'))
rep -= 0x20;
}
while ((rep!='Y') && (rep!='N') && (rep!='A'));
if (rep=='N')
zipok = 0;
if (rep=='A')
opt_overwrite = 2;
}
}
if (zipok==1)
{
zipFile zf;
int errclose;
# ifdef USEWIN32IOAPI
zlib_filefunc64_def ffunc;
fill_win32_filefunc64A(&ffunc);
zf = zipOpen2_64(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
# else
zf = zipOpen64(filename_try,(opt_overwrite==2) ? 2 : 0);
# endif
if (zf == NULL)
{
printf("error opening %s\n",filename_try);
err= ZIP_ERRNO;
}
else
printf("creating %s\n",filename_try);
for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
{
if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
((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'))) &&
(strlen(argv[i]) == 2)))
{
FILE * fin = NULL;
size_t size_read;
const char* filenameinzip = argv[i];
const char *savefilenameinzip;
zip_fileinfo zi;
unsigned long crcFile=0;
int zip64 = 0;
zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour =
zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0;
zi.dosDate = 0;
zi.internal_fa = 0;
zi.external_fa = 0;
filetime(filenameinzip,&zi.tmz_date,&zi.dosDate);
/*
err = zipOpenNewFileInZip(zf,filenameinzip,&zi,
NULL,0,NULL,0,NULL / * comment * /,
(opt_compress_level != 0) ? Z_DEFLATED : 0,
opt_compress_level);
*/
if ((password != NULL) && (err==ZIP_OK))
err = getFileCrc(filenameinzip,buf,size_buf,&crcFile);
zip64 = isLargeFile(filenameinzip);
/* 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 zip file contain any path at all?*/
if( opt_exclude_path )
{
const char *tmpptr;
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.
}
}
/**/
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, */
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
password,crcFile, zip64);
if (err != ZIP_OK)
printf("error in opening %s in zipfile\n",filenameinzip);
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)
do
{
err = ZIP_OK;
size_read = fread(buf,1,size_buf,fin);
if (size_read < size_buf)
if (feof(fin)==0)
{
printf("error in reading %s\n",filenameinzip);
err = ZIP_ERRNO;
}
if (size_read>0)
{
err = zipWriteInFileInZip (zf,buf,(unsigned)size_read);
if (err<0)
{
printf("error in writing %s in the zipfile\n",
filenameinzip);
}
}
} 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\n",
filenameinzip);
}
}
}
errclose = zipClose(zf,NULL);
if (errclose != ZIP_OK)
printf("error in closing %s\n",filename_try);
}
else
{
do_help();
}
free(buf);
return 0;
}
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