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474 lines (396 loc) · 13 KB
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/* miniunz.c
Version 2.0.1, October 16th, 2017
part of the MiniZip project
Copyright (C) 2012-2017 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
Copyright (C) 2009-2010 Mathias Svensson
Modifications for Zip64 support
http://result42.com
Copyright (C) 2007-2008 Even Rouault
Modifications of Unzip for Zip64
Copyright (C) 1998-2010 Gilles Vollant
http://www.winimage.com/zLibDll/minizip.html
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 "mz.h"
#include "mz_os.h"
#include "mz_strm.h"
#include "mz_strm_split.h"
#include "mz_unzip.h"
/***************************************************************************/
void miniunz_banner()
{
printf("Miniunz %s - https://github.com/nmoinvaz/minizip\n", MZ_VERSION);
printf("---------------------------------------------------\n");
}
void miniunz_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");
}
/***************************************************************************/
typedef struct miniunz_opt_s {
uint8_t extract_without_path;
uint8_t overwrite;
} miniunz_opt;
/***************************************************************************/
int32_t miniunz_list(void *handle)
{
mz_unzip_file *file_info = NULL;
uint32_t ratio = 0;
int16_t level = 0;
int16_t err = MZ_OK;
struct tm tmu_date = { 0 };
const char *string_method = NULL;
char crypt = ' ';
err = mz_unzip_goto_first_entry(handle);
if (err != MZ_OK && err != MZ_END_OF_LIST)
{
printf("Error %d going to first entry in zip file\n", err);
return err;
}
printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
do
{
err = mz_unzip_entry_get_info(handle, &file_info);
if (err != MZ_OK)
{
printf("Error %d getting entry info in zip file\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 & MZ_ZIP_FLAG_ENCRYPTED)
crypt = '*';
switch (file_info->compression_method)
{
case MZ_COMPRESS_METHOD_RAW:
string_method = "Stored";
break;
case MZ_COMPRESS_METHOD_DEFLATE:
level = (int16_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 = "Defl:?";
break;
case MZ_COMPRESS_METHOD_BZIP2:
string_method = "BZip2";
break;
case MZ_COMPRESS_METHOD_LZMA:
string_method = "LZMA";
break;
default:
string_method = "Unknwn";
}
mz_dosdate_to_tm(file_info->dos_date, &tmu_date);
printf(" %7llu %6s%c %7llu %3u%% %2.2u-%2.2u-%2.2u %2.2u:%2.2u %8.8x %s\n",
file_info->uncompressed_size, string_method, crypt, file_info->compressed_size, 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, file_info->filename);
err = mz_unzip_goto_next_entry(handle);
}
while (err == MZ_OK);
if (err != MZ_END_OF_LIST && err != MZ_OK)
{
printf("Error %d going to next entry in zip file\n", err);
return err;
}
return MZ_OK;
}
int32_t miniunz_extract_currentfile(void *handle, const char *destination, const char *password, miniunz_opt *options)
{
mz_unzip_file *file_info = NULL;
uint8_t buf[INT16_MAX];
int32_t read = 0;
int32_t written = 0;
int16_t err = MZ_OK;
int16_t err_close = MZ_OK;
uint8_t skip = 0;
void *stream = NULL;
char *match = NULL;
char *filename = NULL;
char out_path[512];
char directory[512];
err = mz_unzip_entry_get_info(handle, &file_info);
if (err != MZ_OK)
{
printf("Error %d getting entry info in zip file\n", err);
return err;
}
match = filename = file_info->filename;
while (*match != 0)
{
if ((*match == '/') || (*match == '\\'))
filename = match + 1;
match += 1;
}
// Construct output path
out_path[0] = 0;
if (destination != NULL)
mz_path_combine(out_path, destination, sizeof(out_path));
if (options->extract_without_path)
mz_path_combine(out_path, filename, sizeof(out_path));
else
mz_path_combine(out_path, file_info->filename, sizeof(out_path));
// If zip entry is a directory then create it on disk
if (*filename == 0)
{
if (options->extract_without_path == 0)
{
printf("Creating directory: %s\n", out_path);
mz_make_dir(out_path);
}
return err;
}
err = mz_unzip_entry_open(handle, 0, password);
if (err != MZ_OK)
{
printf("Error %d opening entry in zip file\n", err);
return err;
}
// Determine if the file should be overwritten or not and ask the user if needed
if ((err == MZ_OK) && (options->overwrite == 0) && (mz_file_exists(out_path)))
{
char rep = 0;
do
{
char answer[128];
printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ", out_path);
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')
options->overwrite = 1;
}
mz_stream_os_create(&stream);
// Create the file on disk so we can unzip to it
if ((skip == 0) && (err == MZ_OK))
{
// Some zips don't contain directory alone before file
if ((mz_stream_os_open(stream, out_path, MZ_STREAM_MODE_CREATE) != MZ_OK) &&
(options->extract_without_path == 0) && (filename != file_info->filename))
{
// Create the directory of the output path
strncpy(directory, out_path, sizeof(directory));
match = directory + strlen(directory) - 1;
while (match > directory)
{
if ((*match == '/') || (*match == '\\'))
{
*match = 0;
break;
}
match -= 1;
}
mz_make_dir(directory);
mz_stream_os_open(stream, out_path, MZ_STREAM_MODE_CREATE);
}
}
// Read from the zip, unzip to buffer, and write to disk
if (mz_stream_os_is_open(stream) == MZ_OK)
{
printf(" Extracting: %s\n", out_path);
while (1)
{
read = mz_unzip_entry_read(handle, buf, sizeof(buf));
if (read < 0)
{
err = read;
printf("Error %d reading entry in zip file\n", err);
break;
}
if (read == 0)
break;
written = mz_stream_os_write(stream, buf, read);
if (written != read)
{
err = mz_stream_os_error(stream);
printf("Error %d in writing extracted file\n", err);
break;
}
}
mz_stream_os_close(stream);
// Set the time of the file that has been unzipped
if (err == MZ_OK)
mz_os_set_file_date(out_path, file_info->dos_date);
}
else
{
printf("Error opening %s\n", out_path);
}
mz_stream_os_delete(&stream);
err_close = mz_unzip_entry_close(handle);
if (err_close != MZ_OK)
printf("Error %d closing entry in zip file\n", err_close);
return err;
}
int32_t miniunz_extract_all(void *handle, const char *destination, const char *password, miniunz_opt *options)
{
int16_t err = MZ_OK;
err = mz_unzip_goto_first_entry(handle);
if (err != MZ_OK && err != MZ_END_OF_LIST)
{
printf("Error %d going to first entry in zip file\n", err);
return 1;
}
while (err == MZ_OK)
{
err = miniunz_extract_currentfile(handle, destination, password, options);
if (err != MZ_OK)
break;
err = mz_unzip_goto_next_entry(handle);
if (err != MZ_OK && err != MZ_END_OF_LIST)
{
printf("Error %d going to next entry in zip file\n", err);
return 1;
}
}
return 0;
}
int32_t miniunz_extract_onefile(void *handle, const char *filename, const char *destination, const char *password, miniunz_opt *options)
{
if (mz_unzip_locate_entry(handle, filename, NULL) != MZ_OK)
{
printf("File %s not found in the zip file\n", filename);
return 2;
}
if (miniunz_extract_currentfile(handle, destination, password, options) == MZ_OK)
return 0;
return 1;
}
#ifndef NOMAIN
int main(int argc, const char *argv[])
{
void *handle = NULL;
void *stream = NULL;
void *split_stream = NULL;
void *open_stream = NULL;
miniunz_opt options;
int16_t i = 0;
uint8_t do_list = 0;
uint8_t do_extract = 1;
const char *path = NULL;
const char *password = NULL;
const char *destination = NULL;
const char *filename_to_extract = NULL;
int err = 0;
miniunz_banner();
if (argc == 1)
{
miniunz_help();
return 0;
}
memset(&options, 0, sizeof(options));
// 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'))
do_list = 1;
if ((c == 'v') || (c == 'V'))
do_list = 1;
if ((c == 'x') || (c == 'X'))
do_extract = 1;
if ((c == 'e') || (c == 'E'))
do_extract = options.extract_without_path = 1;
if ((c == 'o') || (c == 'O'))
options.overwrite = 1;
if (((c == 'd') || (c == 'D')) && (i + 1 < argc))
{
destination = argv[i + 1];
i += 1;
}
if (((c == 'p') || (c == 'P')) && (i + 1 < argc))
{
password = argv[i + 1];
i += 1;
}
}
continue;
}
if (path == NULL)
path = argv[i];
else if ((filename_to_extract == NULL) && (destination == NULL))
filename_to_extract = argv[i];
}
if (path == NULL)
{
printf("Error missing path\n");
return 1;
}
mz_stream_os_create(&stream);
mz_stream_split_create(&split_stream);
mz_stream_set_base(split_stream, stream);
err = mz_stream_open(split_stream, path, MZ_STREAM_MODE_READ);
if (err != MZ_OK)
{
printf("Error opening file %s\n", path);
}
else
{
// Open zip file
handle = mz_unzip_open(split_stream);
if (handle == NULL)
{
printf("Error opening zip %s\n", path);
err = 1;
}
else
{
printf("%s opened\n", path);
// Process command line options
if (do_list)
{
err = miniunz_list(handle);
}
else if (do_extract)
{
// Create target directory if it doesn't exist
if (destination != NULL)
mz_make_dir(destination);
if (filename_to_extract == NULL)
err = miniunz_extract_all(handle, destination, password, &options);
else
err = miniunz_extract_onefile(handle, filename_to_extract, destination, password, &options);
}
mz_unzip_close(handle);
}
mz_stream_os_close(stream);
}
mz_stream_split_delete(&split_stream);
mz_stream_os_delete(&stream);
return err;
}
#endif