d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Uncompress applet for busybox (c) 2002 Glenn McGrath
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "busybox.h"
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#include "unarchive.h"
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#define GUNZIP_TO_STDOUT 1
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#define GUNZIP_FORCE 2
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int uncompress_main(int argc, char **argv)
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{
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int status = EXIT_SUCCESS;
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unsigned long flags;
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flags = bb_getopt_ulflags(argc, argv, "cf");
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while (optind < argc) {
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const char *compressed_file = argv[optind++];
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const char *delete_path = NULL;
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char *uncompressed_file = NULL;
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int src_fd;
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int dst_fd;
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if (strcmp(compressed_file, "-") == 0) {
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src_fd = STDIN_FILENO;
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flags |= GUNZIP_TO_STDOUT;
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} else {
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src_fd = xopen(compressed_file, O_RDONLY);
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}
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/* Check that the input is sane. */
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if (isatty(src_fd) && ((flags & GUNZIP_FORCE) == 0)) {
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bb_error_msg_and_die
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("compressed data not read from terminal. Use -f to force it.");
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}
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/* Set output filename and number */
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if (flags & GUNZIP_TO_STDOUT) {
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dst_fd = STDOUT_FILENO;
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} else {
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struct stat stat_buf;
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char *extension;
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uncompressed_file = xstrdup(compressed_file);
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extension = strrchr(uncompressed_file, '.');
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if (!extension || (strcmp(extension, ".Z") != 0)) {
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bb_error_msg_and_die("Invalid extension");
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}
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*extension = '\0';
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/* Open output file */
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xstat(compressed_file, &stat_buf);
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dst_fd = xopen3(uncompressed_file, O_WRONLY | O_CREAT,
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stat_buf.st_mode);
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/* If unzip succeeds remove the old file */
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delete_path = compressed_file;
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}
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/* do the decompression, and cleanup */
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if ((xread_char(src_fd) != 0x1f) || (xread_char(src_fd) != 0x9d)) {
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bb_error_msg_and_die("Invalid magic");
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}
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status = uncompress(src_fd, dst_fd);
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if ((status != EXIT_SUCCESS) && (uncompressed_file)) {
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/* Unzip failed, remove the uncomressed file instead of compressed file */
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delete_path = uncompressed_file;
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}
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if (dst_fd != STDOUT_FILENO) {
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close(dst_fd);
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}
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if (src_fd != STDIN_FILENO) {
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close(src_fd);
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}
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/* delete_path will be NULL if in test mode or from stdin */
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if (delete_path && (unlink(delete_path) == -1)) {
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bb_error_msg_and_die("Couldn't remove %s", delete_path);
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}
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free(uncompressed_file);
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}
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return status;
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}
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