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;
46 /* NB: new_name is *possibly* malloc'ed! */
47 smallint exitcode = 0;
50 char *new_name = NULL;
52 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 unless -c, "-" or called as bzcat */
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 too */
84 /* TODO: "real" gunzip goes not bail out, but goes
86 if (open_to_or_warn(STDOUT_FILENO, new_name, O_WRONLY | O_CREAT | O_EXCL,
91 /* Check that the input is sane. */
92 if (isatty(STDIN_FILENO) && (option_mask32 & OPT_FORCE) == 0) {
93 bb_error_msg_and_die("compressed data not read from terminal, "
94 "use -f to force it");
102 char *del = new_name;
104 /* TODO: restore user/group/times here? */
105 /* delete _old_ file */
107 /* Restore extension (unless tgz -> tar case) */
108 if (new_name == filename)
109 filename[strlen(filename)] = '.';
112 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);
121 if (new_name != filename)
124 } while (*argv && *++argv);
132 char* make_new_name_bunzip2(char *filename)
134 char *extension = strrchr(filename, '.');
135 if (!extension || strcmp(extension, ".bz2") != 0) {
136 /* Mimic GNU gunzip ("real" bunzip2 tries to */
137 /* unpack file anyway, to file.out) */
145 USE_DESKTOP(long long) int unpack_bunzip2(void)
147 return uncompressStream(STDIN_FILENO, STDOUT_FILENO);
150 int bunzip2_main(int argc, char **argv);
151 int bunzip2_main(int argc, char **argv)
153 getopt32(argc, argv, "cf");
155 if (applet_name[2] == 'c')
156 option_mask32 |= OPT_STDOUT;
158 return unpack(argv, make_new_name_bunzip2, unpack_bunzip2);
165 * Gzip implementation for busybox
167 * Based on GNU gzip v1.2.4 Copyright (C) 1992-1993 Jean-loup Gailly.
169 * Originally adjusted for busybox by Sven Rudolph <sr1@inf.tu-dresden.de>
170 * based on gzip sources
172 * Adjusted further by Erik Andersen <andersen@codepoet.org> to support files as
173 * well as stdin/stdout, and to generally behave itself wrt command line
176 * General cleanup to better adhere to the style guide and make use of standard
177 * busybox functions by Glenn McGrath <bug1@iinet.net.au>
179 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
181 * gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
182 * Copyright (C) 1992-1993 Jean-loup Gailly
183 * The unzip code was written and put in the public domain by Mark Adler.
184 * Portions of the lzw code are derived from the public domain 'compress'
185 * written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve Davies,
186 * Ken Turkowski, Dave Mack and Peter Jannesen.
188 * See the license_msg below and the file COPYING for the software license.
189 * See the file algorithm.doc for the compression algorithms and file formats.
195 char* make_new_name_gunzip(char *filename)
197 char *extension = strrchr(filename, '.');
202 if (strcmp(extension, ".gz") == 0
203 #ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
204 || strcmp(extension, ".Z") == 0
208 } else if(strcmp(extension, ".tgz") == 0) {
209 filename = xstrdup(filename);
210 extension = strrchr(filename, '.');
220 USE_DESKTOP(long long) int unpack_gunzip(void)
222 USE_DESKTOP(long long) int status = -1;
224 /* do the decompression, and cleanup */
225 if (xread_char(STDIN_FILENO) == 0x1f) {
226 unsigned char magic2;
228 magic2 = xread_char(STDIN_FILENO);
229 if (ENABLE_FEATURE_GUNZIP_UNCOMPRESS && magic2 == 0x9d) {
230 status = uncompress(STDIN_FILENO, STDOUT_FILENO);
231 } else if (magic2 == 0x8b) {
232 check_header_gzip_or_die(STDIN_FILENO);
233 status = inflate_gunzip(STDIN_FILENO, STDOUT_FILENO);
238 bb_error_msg("error inflating");
242 bb_error_msg("invalid magic");
243 /* status is still == -1 */
248 int gunzip_main(int argc, char **argv);
249 int gunzip_main(int argc, char **argv)
251 getopt32(argc, argv, "cftdv");
253 /* if called as zcat */
254 if (applet_name[1] == 'c')
255 option_mask32 |= OPT_STDOUT;
257 return unpack(argv, make_new_name_gunzip, unpack_gunzip);
264 * Small lzma deflate implementation.
265 * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
267 * Based on bunzip.c from busybox
269 * Licensed under GPL v2, see file LICENSE in this tarball for details.
275 char* make_new_name_unlzma(char *filename)
277 char *extension = strrchr(filename, '.');
278 if (!extension || strcmp(extension, ".lzma") != 0)
285 USE_DESKTOP(long long) int unpack_unlzma(void)
287 return unlzma(STDIN_FILENO, STDOUT_FILENO);
290 int unlzma_main(int argc, char **argv);
291 int unlzma_main(int argc, char **argv)
293 getopt32(argc, argv, "c");
296 if (applet_name[4] == 'c')
297 option_mask32 |= OPT_STDOUT;
299 return unpack(argv, make_new_name_unlzma, unpack_unlzma);
305 /* vi: set sw=4 ts=4: */
307 * Uncompress applet for busybox (c) 2002 Glenn McGrath
309 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
312 #if ENABLE_UNCOMPRESS
315 char* make_new_name_uncompress(char *filename)
317 char *extension = strrchr(filename, '.');
318 if (!extension || strcmp(extension, ".Z") != 0)
325 USE_DESKTOP(long long) int unpack_uncompress(void)
327 USE_DESKTOP(long long) int status = -1;
329 if ((xread_char(STDIN_FILENO) != 0x1f) || (xread_char(STDIN_FILENO) != 0x9d)) {
330 bb_error_msg("invalid magic");
332 status = uncompress(STDIN_FILENO, STDOUT_FILENO);
337 int uncompress_main(int argc, char **argv);
338 int uncompress_main(int argc, char **argv)
340 getopt32(argc, argv, "cf");
343 return unpack(argv, make_new_name_uncompress, unpack_uncompress);