mirror of
https://github.com/sheumann/hush.git
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104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/*
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* Modified for busybox by Glenn McGrath <bug1@optushome.com.au>
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* Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "busybox.h"
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#include "unarchive.h"
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int bunzip2_main(int argc, char **argv)
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{
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const int bunzip_to_stdout = 1;
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const int bunzip_force = 2;
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int flags = 0;
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int opt = 0;
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int status;
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int src_fd;
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int dst_fd;
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char *save_name = NULL;
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char *delete_name = NULL;
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/* if called as bzcat */
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if (strcmp(applet_name, "bzcat") == 0)
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flags |= bunzip_to_stdout;
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while ((opt = getopt(argc, argv, "cfh")) != -1) {
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switch (opt) {
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case 'c':
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flags |= bunzip_to_stdout;
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break;
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case 'f':
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flags |= bunzip_force;
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break;
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case 'h':
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default:
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show_usage(); /* exit's inside usage */
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}
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}
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/* Set input filename and number */
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if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) {
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flags |= bunzip_to_stdout;
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src_fd = fileno(stdin);
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} else {
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/* Open input file */
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src_fd = xopen(argv[optind], O_RDONLY);
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save_name = xstrdup(argv[optind]);
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if (strcmp(save_name + strlen(save_name) - 4, ".bz2") != 0)
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error_msg_and_die("Invalid extension");
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save_name[strlen(save_name) - 4] = '\0';
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}
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/* Check that the input is sane. */
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if (isatty(src_fd) && (flags & bunzip_force) == 0) {
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error_msg_and_die("compressed data not read from terminal. Use -f to force it.");
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}
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if (flags & bunzip_to_stdout) {
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dst_fd = fileno(stdout);
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} else {
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dst_fd = xopen(save_name, O_WRONLY | O_CREAT);
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}
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if (uncompressStream(src_fd, dst_fd)) {
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if (!(flags & bunzip_to_stdout)) {
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delete_name = argv[optind];
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}
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status = EXIT_SUCCESS;
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} else {
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if (!(flags & bunzip_to_stdout)) {
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delete_name = save_name;
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}
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status = EXIT_FAILURE;
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}
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if ((delete_name) && (unlink(delete_name) < 0)) {
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error_msg_and_die("Couldn't remove %s", delete_name);
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}
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return status;
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}
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