1 /* vi: set sw=4 ts=4: */
3 * Modified for busybox by Glenn McGrath <bug1@iinet.net.au>
4 * Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
6 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
10 #include "unarchive.h"
22 int open_to_or_warn(int to_fd, const char *filename, int flags, int mode)
24 int fd = open(filename, flags, mode);
26 bb_perror_msg("%s", filename);
30 if (dup2(fd, to_fd) < 0)
31 bb_perror_msg_and_die("cannot dup");
38 int unpack(char **argv,
39 char* (*make_new_name)(char *filename),
40 USE_DESKTOP(long long) int (*unpacker)(void)
44 USE_DESKTOP(long long) int status;
45 char *filename, *new_name;
46 smallint exitcode = 0;
49 /* NB: new_name is *maybe* malloc'ed! */
51 filename = *argv; /* can be NULL - 'streaming' bunzip2 */
53 if (filename && LONE_DASH(filename))
58 if (stat(filename, &stat_buf) != 0) {
59 bb_perror_msg("%s", filename);
64 if (open_to_or_warn(STDIN_FILENO, filename, O_RDONLY, 0))
68 /* Special cases: test, stdout */
69 if (option_mask32 & (OPT_STDOUT|OPT_TEST)) {
70 if (option_mask32 & OPT_TEST)
71 if (open_to_or_warn(STDOUT_FILENO, bb_dev_null, O_WRONLY, 0))
76 /* Open dst if we are going to unpack to file */
78 new_name = make_new_name(filename);
80 bb_error_msg("%s: unknown suffix - ignored", filename);
83 /* O_EXCL: "real" bunzip2 doesn't overwrite files */
84 /* GNU gunzip goes not bail out, but goes to next file */
85 if (open_to_or_warn(STDOUT_FILENO, new_name, O_WRONLY | O_CREAT | O_EXCL,
90 /* Check that the input is sane */
91 if (isatty(STDIN_FILENO) && (option_mask32 & OPT_FORCE) == 0) {
92 bb_error_msg_and_die("compressed data not read from terminal, "
93 "use -f to force it");
101 char *del = new_name;
103 /* TODO: restore user/group/times here? */
104 /* Delete _compressed_ file */
106 /* restore extension (unless tgz -> tar case) */
107 if (new_name == filename)
108 filename[strlen(filename)] = '.';
111 bb_perror_msg_and_die("cannot remove %s", del);
113 #if 0 /* Currently buggy - wrong name: "a.gz: 261% - replaced with a.gz" */
114 /* Extreme bloat for gunzip compat */
115 if (ENABLE_DESKTOP && (option_mask32 & OPT_VERBOSE) && status >= 0) {
116 fprintf(stderr, "%s: %u%% - replaced with %s\n",
117 filename, (unsigned)(stat_buf.st_size*100 / (status+1)), new_name);
122 if (new_name != filename)
125 } while (*argv && *++argv);
133 char* make_new_name_bunzip2(char *filename)
135 char *extension = strrchr(filename, '.');
136 if (!extension || strcmp(extension, ".bz2") != 0) {
137 /* Mimic GNU gunzip - "real" bunzip2 tries to */
138 /* unpack file anyway, to file.out */
146 USE_DESKTOP(long long) int unpack_bunzip2(void)
148 return uncompressStream(STDIN_FILENO, STDOUT_FILENO);
151 int bunzip2_main(int argc, char **argv);
152 int bunzip2_main(int argc, char **argv)
154 getopt32(argc, argv, "cf");
156 if (applet_name[2] == 'c')
157 option_mask32 |= OPT_STDOUT;
159 return unpack(argv, make_new_name_bunzip2, unpack_bunzip2);
166 * Gzip implementation for busybox
168 * Based on GNU gzip v1.2.4 Copyright (C) 1992-1993 Jean-loup Gailly.
170 * Originally adjusted for busybox by Sven Rudolph <sr1@inf.tu-dresden.de>
171 * based on gzip sources
173 * Adjusted further by Erik Andersen <andersen@codepoet.org> to support files as
174 * well as stdin/stdout, and to generally behave itself wrt command line
177 * General cleanup to better adhere to the style guide and make use of standard
178 * busybox functions by Glenn McGrath <bug1@iinet.net.au>
180 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
182 * gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
183 * Copyright (C) 1992-1993 Jean-loup Gailly
184 * The unzip code was written and put in the public domain by Mark Adler.
185 * Portions of the lzw code are derived from the public domain 'compress'
186 * written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve Davies,
187 * Ken Turkowski, Dave Mack and Peter Jannesen.
189 * See the license_msg below and the file COPYING for the software license.
190 * See the file algorithm.doc for the compression algorithms and file formats.
196 char* make_new_name_gunzip(char *filename)
198 char *extension = strrchr(filename, '.');
203 if (strcmp(extension, ".gz") == 0
204 #ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
205 || strcmp(extension, ".Z") == 0
209 } else if(strcmp(extension, ".tgz") == 0) {
210 filename = xstrdup(filename);
211 extension = strrchr(filename, '.');
221 USE_DESKTOP(long long) int unpack_gunzip(void)
223 USE_DESKTOP(long long) int status = -1;
225 /* do the decompression, and cleanup */
226 if (xread_char(STDIN_FILENO) == 0x1f) {
227 unsigned char magic2;
229 magic2 = xread_char(STDIN_FILENO);
230 if (ENABLE_FEATURE_GUNZIP_UNCOMPRESS && magic2 == 0x9d) {
231 status = uncompress(STDIN_FILENO, STDOUT_FILENO);
232 } else if (magic2 == 0x8b) {
233 check_header_gzip_or_die(STDIN_FILENO);
234 status = inflate_gunzip(STDIN_FILENO, STDOUT_FILENO);
239 bb_error_msg("error inflating");
243 bb_error_msg("invalid magic");
244 /* status is still == -1 */
249 int gunzip_main(int argc, char **argv);
250 int gunzip_main(int argc, char **argv)
252 getopt32(argc, argv, "cftdv");
254 /* if called as zcat */
255 if (applet_name[1] == 'c')
256 option_mask32 |= OPT_STDOUT;
258 return unpack(argv, make_new_name_gunzip, unpack_gunzip);
265 * Small lzma deflate implementation.
266 * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
268 * Based on bunzip.c from busybox
270 * Licensed under GPL v2, see file LICENSE in this tarball for details.
276 char* make_new_name_unlzma(char *filename)
278 char *extension = strrchr(filename, '.');
279 if (!extension || strcmp(extension, ".lzma") != 0)
286 USE_DESKTOP(long long) int unpack_unlzma(void)
288 return unlzma(STDIN_FILENO, STDOUT_FILENO);
291 int unlzma_main(int argc, char **argv);
292 int unlzma_main(int argc, char **argv)
294 getopt32(argc, argv, "c");
297 if (applet_name[4] == 'c')
298 option_mask32 |= OPT_STDOUT;
300 return unpack(argv, make_new_name_unlzma, unpack_unlzma);
306 /* vi: set sw=4 ts=4: */
308 * Uncompress applet for busybox (c) 2002 Glenn McGrath
310 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
313 #if ENABLE_UNCOMPRESS
316 char* make_new_name_uncompress(char *filename)
318 char *extension = strrchr(filename, '.');
319 if (!extension || strcmp(extension, ".Z") != 0)
326 USE_DESKTOP(long long) int unpack_uncompress(void)
328 USE_DESKTOP(long long) int status = -1;
330 if ((xread_char(STDIN_FILENO) != 0x1f) || (xread_char(STDIN_FILENO) != 0x9d)) {
331 bb_error_msg("invalid magic");
333 status = uncompress(STDIN_FILENO, STDOUT_FILENO);
338 int uncompress_main(int argc, char **argv);
339 int uncompress_main(int argc, char **argv)
341 getopt32(argc, argv, "cf");
344 return unpack(argv, make_new_name_uncompress, unpack_uncompress);