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/*
* Copyright 2005-2019 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2005-2010 Ned Ludd - <solar@gentoo.org>
* Copyright 2005-2014 Mike Frysinger - <vapier@gentoo.org>
*/
#include "main.h"
#include "applets.h"
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "basename.h"
#include "copy_file.h"
#include "safe_io.h"
#include "scandirat.h"
#include "xpak.h"
#define QXPAK_FLAGS "lxcd:O" COMMON_FLAGS
static struct option const qxpak_long_opts[] = {
{"list", no_argument, NULL, 'l'},
{"extract", no_argument, NULL, 'x'},
{"create", no_argument, NULL, 'c'},
{"dir", a_argument, NULL, 'd'},
{"stdout", no_argument, NULL, 'O'},
COMMON_LONG_OPTS
};
static const char * const qxpak_opts_help[] = {
"List the contents of an archive",
"Extract the contents of an archive",
"Create an archive of a directory/files",
"Change to specified directory",
"Write files to stdout",
COMMON_OPTS_HELP
};
#define qxpak_usage(ret) usage(ret, QXPAK_FLAGS, qxpak_long_opts, qxpak_opts_help, NULL, lookup_applet_idx("qxpak"))
static char xpak_stdout;
static void
_xpak_list_callback(
int dir_fd,
char *pathname,
int pathname_len,
int data_offset,
int data_len,
char *data)
{
(void)dir_fd;
(void)pathname_len;
(void)data;
if (!verbose)
puts(pathname);
else if (verbose == 1)
printf("%s: %i byte%c\n", pathname, data_len, (data_len>1?'s':' '));
else
printf("%s: %i byte%c @ offset byte %i\n",
pathname, data_len, (data_len>1?'s':' '), data_offset);
}
static void
_xpak_extract_callback(
int dir_fd,
char *pathname,
int pathname_len,
int data_offset,
int data_len,
char *data)
{
FILE *out;
(void)pathname_len;
if (verbose == 1)
puts(pathname);
else if (verbose > 1)
printf("%s: %i byte%c\n", pathname, data_len, (data_len>1?'s':' '));
if (!xpak_stdout) {
int fd = openat(dir_fd, pathname,
O_WRONLY|O_CLOEXEC|O_CREAT|O_TRUNC, 0644);
if (fd < 0)
return;
out = fdopen(fd, "w");
if (!out)
return;
} else
out = stdout;
fwrite(data + data_offset, 1, data_len, out);
if (!xpak_stdout)
fclose(out);
}
int qxpak_main(int argc, char **argv)
{
enum { XPAK_ACT_NONE, XPAK_ACT_LIST, XPAK_ACT_EXTRACT, XPAK_ACT_CREATE };
int i, ret, dir_fd;
char *xpak;
char action = XPAK_ACT_NONE;
dir_fd = AT_FDCWD;
xpak_stdout = 0;
while ((i = GETOPT_LONG(QXPAK, qxpak, "")) != -1) {
switch (i) {
COMMON_GETOPTS_CASES(qxpak)
case 'l': action = XPAK_ACT_LIST; break;
case 'x': action = XPAK_ACT_EXTRACT; break;
case 'c': action = XPAK_ACT_CREATE; break;
case 'O': xpak_stdout = 1; break;
case 'd':
if (dir_fd != AT_FDCWD)
err("Only use -d once");
dir_fd = open(optarg, O_RDONLY|O_CLOEXEC|O_PATH);
if (dir_fd < 0)
errp("Could not open directory %s", optarg);
break;
}
}
if (optind == argc || action == XPAK_ACT_NONE)
qxpak_usage(EXIT_FAILURE);
xpak = argv[optind++];
argc -= optind;
argv += optind;
switch (action) {
case XPAK_ACT_LIST:
ret = xpak_list(dir_fd, xpak, argc, argv, &_xpak_list_callback);
break;
case XPAK_ACT_EXTRACT:
ret = xpak_extract(dir_fd, xpak, argc, argv, &_xpak_extract_callback);
break;
case XPAK_ACT_CREATE:
ret = xpak_create(dir_fd, xpak, argc, argv, 0, verbose);
break;
default:
ret = EXIT_FAILURE;
}
if (dir_fd != AT_FDCWD)
close(dir_fd);
return ret;
}
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