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576 lines (503 loc) · 15.4 KB
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/* miniunz.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 <sys/stat.h>
# include <unistd.h>
# include <utime.h>
#endif
#ifdef _WIN32
# define MKDIR(d) _mkdir(d)
# define CHDIR(d) _chdir(d)
#else
# define MKDIR(d) mkdir(d, 0775)
# define CHDIR(d) chdir(d)
#endif
#include "unzip.h"
#define WRITEBUFFERSIZE (8192)
#define MAXFILENAME (256)
#ifdef _WIN32
# define USEWIN32IOAPI
# include "iowin32.h"
#endif
void change_file_date(const char *filename, uLong dosdate, tm_unz tmu_date)
{
#ifdef _WIN32
HANDLE hFile;
FILETIME ftm, ftLocal, ftCreate, ftLastAcc, ftLastWrite;
hFile = CreateFileA(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
GetFileTime(hFile, &ftCreate, &ftLastAcc, &ftLastWrite);
DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate, &ftLocal);
LocalFileTimeToFileTime(&ftLocal, &ftm);
SetFileTime(hFile, &ftm, &ftLastAcc, &ftm);
CloseHandle(hFile);
}
#else
#if defined unix || defined __APPLE__
struct utimbuf ut;
struct tm newdate;
newdate.tm_sec = tmu_date.tm_sec;
newdate.tm_min = tmu_date.tm_min;
newdate.tm_hour = tmu_date.tm_hour;
newdate.tm_mday = tmu_date.tm_mday;
newdate.tm_mon = tmu_date.tm_mon;
if (tmu_date.tm_year > 1900)
newdate.tm_year = tmu_date.tm_year - 1900;
else
newdate.tm_year = tmu_date.tm_year ;
newdate.tm_isdst = -1;
ut.actime = ut.modtime = mktime(&newdate);
utime(filename,&ut);
#endif
#endif
}
int check_file_exists(const char* filename)
{
FILE* ftestexist = FOPEN_FUNC(filename,"rb");
if (ftestexist == NULL)
return 0;
fclose(ftestexist);
return 1;
}
int makedir(const char *newdir)
{
char *buffer = NULL;
char *p = NULL;
int len = (int)strlen(newdir);
if (len <= 0)
return 0;
buffer = (char*)malloc(len+1);
if (buffer == NULL)
{
printf("Error allocating memory\n");
return UNZ_INTERNALERROR;
}
strcpy(buffer, newdir);
if (buffer[len-1] == '/')
buffer[len-1] = 0;
if (MKDIR(buffer) == 0)
{
free(buffer);
return 1;
}
p = buffer + 1;
while (1)
{
char hold;
while(*p && *p != '\\' && *p != '/')
p++;
hold = *p;
*p = 0;
if ((MKDIR(buffer) == -1) && (errno == ENOENT))
{
printf("couldn't create directory %s (%d)\n", buffer, errno);
free(buffer);
return 0;
}
if (hold == 0)
break;
*p++ = hold;
}
free(buffer);
return 1;
}
void display_zpos64(ZPOS64_T n, int size_char)
{
/* To avoid compatibility problem we do here the conversion */
char number[21] = {0};
int offset = 19;
int pos_string = 19;
int size_display_string = 19;
while (1)
{
number[offset] = (char)((n%10) + '0');
if (number[offset] != '0')
pos_string = offset;
n /= 10;
if (offset == 0)
break;
offset--;
}
size_display_string -= pos_string;
while (size_char-- > size_display_string)
printf(" ");
printf("%s",&number[pos_string]);
}
void do_banner()
{
printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
}
void do_help()
{
printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
" -e Extract without pathname (junk paths)\n" \
" -x Extract with pathname\n" \
" -v list files\n" \
" -l list files\n" \
" -d directory to extract into\n" \
" -o overwrite files without prompting\n" \
" -p extract crypted file using password\n\n");
}
int do_list(unzFile uf)
{
uLong i = 0;
int err = unzGoToFirstFile(uf);
if (err != UNZ_OK)
{
printf("error %d with zipfile in unzGoToFirstFile\n", err);
return 1;
}
printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
do
{
char filename_inzip[256] = {0};
unz_file_info64 file_info = {0};
uLong ratio = 0;
const char *string_method = NULL;
char charCrypt = ' ';
err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
if (err != UNZ_OK)
{
printf("error %d with zipfile in unzGetCurrentFileInfo\n", err);
break;
}
if (file_info.uncompressed_size > 0)
ratio = (uLong)((file_info.compressed_size*100) / file_info.uncompressed_size);
/* Display a '*' if the file is encrypted */
if ((file_info.flag & 1) != 0)
charCrypt = '*';
if (file_info.compression_method == 0)
string_method = "Stored";
else if (file_info.compression_method == Z_DEFLATED)
{
uInt iLevel = (uInt)((file_info.flag & 0x6) / 2);
if (iLevel == 0)
string_method = "Defl:N";
else if (iLevel == 1)
string_method = "Defl:X";
else if ((iLevel == 2) || (iLevel == 3))
string_method = "Defl:F"; /* 2:fast , 3 : extra fast*/
}
else if (file_info.compression_method == Z_BZIP2ED)
{
string_method = "BZip2 ";
}
else
string_method = "Unkn. ";
display_zpos64(file_info.uncompressed_size, 7);
printf(" %6s%c", string_method, charCrypt);
display_zpos64(file_info.compressed_size, 7);
printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n", ratio,
(uLong)file_info.tmu_date.tm_mon + 1, (uLong)file_info.tmu_date.tm_mday,
(uLong)file_info.tmu_date.tm_year % 100,
(uLong)file_info.tmu_date.tm_hour, (uLong)file_info.tmu_date.tm_min,
(uLong)file_info.crc, filename_inzip);
err = unzGoToNextFile(uf);
}
while (err == UNZ_OK);
if (err != UNZ_END_OF_LIST_OF_FILE && err != UNZ_OK) {
printf("error %d with zipfile in unzGoToNextFile\n", err);
return err;
}
return 0;
}
int do_extract_currentfile(unzFile uf, int opt_extract_without_path, int* popt_overwrite, const char *password)
{
unz_file_info64 file_info = {0};
FILE* fout = NULL;
void* buf = NULL;
uInt size_buf = WRITEBUFFERSIZE;
int err = UNZ_OK;
int errclose = UNZ_OK;
int skip = 0;
uLong ratio = 0;
char filename_inzip[256] = {0};
char* filename_withoutpath = NULL;
const char* write_filename = NULL;
char* p = NULL;
err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
if (err != UNZ_OK)
{
printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
return err;
}
p = filename_withoutpath = filename_inzip;
while (*p != 0)
{
if ((*p == '/') || (*p == '\\'))
filename_withoutpath = p+1;
p++;
}
/* If zip entry is a directory then create it on disk */
if (*filename_withoutpath == 0)
{
if (opt_extract_without_path == 0)
{
printf("creating directory: %s\n", filename_inzip);
MKDIR(filename_inzip);
}
return err;
}
buf = (void*)malloc(size_buf);
if (buf == NULL)
{
printf("Error allocating memory\n");
return UNZ_INTERNALERROR;
}
err = unzOpenCurrentFilePassword(uf, password);
if (err != UNZ_OK)
printf("error %d with zipfile in unzOpenCurrentFilePassword\n", err);
if (opt_extract_without_path)
write_filename = filename_withoutpath;
else
write_filename = filename_inzip;
/* Determine if the file should be overwritten or not and ask the user if needed */
if ((err == UNZ_OK) && (*popt_overwrite == 0) && (check_file_exists(write_filename)))
{
char rep = 0;
do
{
char answer[128];
printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ", write_filename);
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 == 'N')
skip = 1;
if (rep == 'A')
*popt_overwrite = 1;
}
/* Create the file on disk so we can unzip to it */
if ((skip == 0) && (err == UNZ_OK))
{
fout = FOPEN_FUNC(write_filename, "wb");
/* Some zips don't contain directory alone before file */
if ((fout == NULL) && (opt_extract_without_path == 0) &&
EEA5
(filename_withoutpath != (char*)filename_inzip))
{
char c = *(filename_withoutpath-1);
*(filename_withoutpath-1) = 0;
makedir(write_filename);
*(filename_withoutpath-1) = c;
fout = FOPEN_FUNC(write_filename, "wb");
}
if (fout == NULL)
printf("error opening %s\n", write_filename);
}
/* Read from the zip, unzip to buffer, and write to disk */
if (fout != NULL)
{
printf(" extracting: %s\n", write_filename);
do
{
err = unzReadCurrentFile(uf, buf, size_buf);
if (err < 0)
{
printf("error %d with zipfile in unzReadCurrentFile\n", err);
break;
}
if (err == 0)
break;
if (fwrite(buf, err, 1, fout) != 1)
{
printf("error %d in writing extracted file\n", errno);
err = UNZ_ERRNO;
break;
}
}
while (err > 0);
if (fout)
fclose(fout);
/* Set the time of the file that has been unzipped */
if (err == 0)
change_file_date(write_filename,file_info.dosDate, file_info.tmu_date);
}
errclose = unzCloseCurrentFile(uf);
if (errclose != UNZ_OK)
printf("error %d with zipfile in unzCloseCurrentFile\n", errclose);
free(buf);
return err;
}
int do_extract_all(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char *password)
{
int err = unzGoToFirstFile(uf);
if (err != UNZ_OK)
{
printf("error %d with zipfile in unzGoToFirstFile\n", err);
return 1;
}
do
{
err = do_extract_currentfile(uf, opt_extract_without_path, &opt_overwrite, password);
if (err != UNZ_OK)
break;
err = unzGoToNextFile(uf);
}
while (err == UNZ_OK);
if (err != UNZ_END_OF_LIST_OF_FILE)
{
printf("error %d with zipfile in unzGoToNextFile\n", err);
return 1;
}
return 0;
}
int do_extract_onefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite,
const char* password)
{
int err = UNZ_OK;
if (unzLocateFile(uf, filename, NULL) != UNZ_OK)
{
printf("file %s not found in the zipfile\n", filename);
return 2;
}
if (do_extract_currentfile(uf, opt_extract_without_path, &opt_overwrite, password) == UNZ_OK)
return 0;
return 1;
}
int main(int argc, const char *argv[])
{
const char *zipfilename = NULL;
const char *filename_to_extract = NULL;
const char *password = NULL;
int i = 0;
int ret = 0;
int opt_do_list = 0;
int opt_do_extract = 1;
int opt_do_extract_withoutpath = 0;
int opt_overwrite = 0;
int opt_extractdir = 0;
const char *dirname = NULL;
unzFile uf = NULL;
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 == 'l') || (c == 'L'))
opt_do_list = 1;
if ((c == 'v') || (c == 'V'))
opt_do_list = 1;
if ((c == 'x') || (c == 'X'))
opt_do_extract = 1;
if ((c == 'e') || (c == 'E'))
opt_do_extract = opt_do_extract_withoutpath = 1;
if ((c == 'o') || (c == 'O'))
opt_overwrite=1;
if ((c == 'd') || (c == 'D'))
{
opt_extractdir = 1;
dirname = argv[i+1];
}
if (((c == 'p') || (c == 'P')) && (i+1 < argc))
{
password = argv[i+1];
i++;
}
}
}
else
{
if (zipfilename == NULL)
zipfilename = argv[i];
else if ((filename_to_extract == NULL) && (!opt_extractdir))
filename_to_extract = argv[i];
}
}
/* Open zip file */
if (zipfilename != NULL)
{
#ifdef USEWIN32IOAPI
zlib_filefunc64_def ffunc;
fill_win32_filefunc64A(&ffunc);
uf = unzOpen2_64(zipfilename, &ffunc);
#else
uf = unzOpen64(zipfilename);
#endif
}
if (uf == NULL)
{
printf("Cannot open %s\n", zipfilename);
return 1;
}
printf("%s opened\n", zipfilename);
/* Process command line options */
if (opt_do_list == 1)
{
ret = do_list(uf);
}
else if (opt_do_extract == 1)
{
if (opt_extractdir && CHDIR(dirname))
{
printf("Error changing into %s, aborting\n", dirname);
exit(-1);
}
if (filename_to_extract == NULL)
ret = do_extract_all(uf, opt_do_extract_withoutpath, opt_overwrite, password);
else
ret = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
}
unzClose(uf);
return ret;
}