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445 lines (390 loc) · 12.2 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.
*/
#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
#include "unzip.h"
#ifdef _WIN32
# define USEWIN32IOAPI
# include "iowin32.h"
#endif
#include "minishared.h"
void display_zpos64(uint64_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/minizip.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 path (junk paths)\n" \
" -x Extract with path\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)
{
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};
uint32_t ratio = 0;
struct tm tmu_date = { 0 };
const char *string_method = NULL;
char char_crypt = ' ';
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 = (uint32_t)((file_info.compressed_size * 100) / file_info.uncompressed_size);
/* Display a '*' if the file is encrypted */
if ((file_info.flag & 1) != 0)
char_crypt = '*';
if (file_info.compression_method == 0)
string_method = "Stored";
else if (file_info.compression_method == Z_DEFLATED)
{
uint16_t level = (uint16_t)((file_info.flag & 0x6) / 2);
if (level == 0)
string_method = "Defl:N";
else if (level == 1)
string_method = "Defl:X";
else if ((level == 2) || (level == 3))
string_method = "Defl:F"; /* 2:fast , 3 : extra fast*/
else
string_method = "Unkn. ";
}
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, char_crypt);
display_zpos64(file_info.compressed_size, 7);
dosdate_to_tm(file_info.dos_date, &tmu_date);
printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n", ratio,
(uint32_t)tmu_date.tm_mon + 1, (uint32_t)tmu_date.tm_mday,
(uint32_t)tmu_date.tm_year % 100,
(uint32_t)tmu_date.tm_hour, (uint32_t)tmu_date.tm_min,
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;
uint16_t size_buf = 8192;
int err = UNZ_OK;
int errclose = UNZ_OK;
int skip = 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) &&
(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.dos_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)
{
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;
}