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Changes for kernel and Busybox
[tomato.git] / release / src / router / busybox / archival / unzip.c
blob3c76cdafcf624d6da32131f73ac66a829750e6ea
1 /* vi: set sw=4 ts=4: */
2 /*
3 * Mini unzip implementation for busybox
4 *
5 * Copyright (C) 2004 by Ed Clark
6 *
7 * Loosely based on original busybox unzip applet by Laurence Anderson.
8 * All options and features should work in this version.
9 *
10 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 */
12
13 /* For reference see
14 * http://www.pkware.com/company/standards/appnote/
15 * http://www.info-zip.org/pub/infozip/doc/appnote-iz-latest.zip
16 */
17
18 /* TODO
19 * Zip64 + other methods
20 */
21
22 //usage:#define unzip_trivial_usage
23 //usage: "[-opts[modifiers]] FILE[.zip] [LIST] [-x XLIST] [-d DIR]"
24 //usage:#define unzip_full_usage "\n\n"
25 //usage: "Extract files from ZIP archives\n"
26 //usage: "\n -l List archive contents (with -q for short form)"
27 //usage: "\n -n Never overwrite files (default)"
28 //usage: "\n -o Overwrite"
29 //usage: "\n -p Send output to stdout"
30 //usage: "\n -q Quiet"
31 //usage: "\n -x XLST Exclude these files"
32 //usage: "\n -d DIR Extract files into DIR"
33
34 #include "libbb.h"
35 #include "bb_archive.h"
36
37 enum {
38 #if BB_BIG_ENDIAN
39 ZIP_FILEHEADER_MAGIC = 0x504b0304,
40 ZIP_CDF_MAGIC = 0x504b0102, /* central directory's file header */
41 ZIP_CDE_MAGIC = 0x504b0506, /* "end of central directory" record */
42 ZIP_DD_MAGIC = 0x504b0708,
43 #else
44 ZIP_FILEHEADER_MAGIC = 0x04034b50,
45 ZIP_CDF_MAGIC = 0x02014b50,
46 ZIP_CDE_MAGIC = 0x06054b50,
47 ZIP_DD_MAGIC = 0x08074b50,
48 #endif
49 };
50
51 #define ZIP_HEADER_LEN 26
52
53 typedef union {
54 uint8_t raw[ZIP_HEADER_LEN];
55 struct {
56 uint16_t version; /* 0-1 */
57 uint16_t zip_flags; /* 2-3 */
58 uint16_t method; /* 4-5 */
59 uint16_t modtime; /* 6-7 */
60 uint16_t moddate; /* 8-9 */
61 uint32_t crc32 PACKED; /* 10-13 */
62 uint32_t cmpsize PACKED; /* 14-17 */
63 uint32_t ucmpsize PACKED; /* 18-21 */
64 uint16_t filename_len; /* 22-23 */
65 uint16_t extra_len; /* 24-25 */
66 } formatted PACKED;
67 } zip_header_t; /* PACKED - gcc 4.2.1 doesn't like it (spews warning) */
68
69 /* Check the offset of the last element, not the length. This leniency
70 * allows for poor packing, whereby the overall struct may be too long,
71 * even though the elements are all in the right place.
72 */
73 struct BUG_zip_header_must_be_26_bytes {
74 char BUG_zip_header_must_be_26_bytes[
75 offsetof(zip_header_t, formatted.extra_len) + 2
76 == ZIP_HEADER_LEN ? 1 : -1];
77 };
78
79 #define FIX_ENDIANNESS_ZIP(zip_header) do { \
80 (zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \
81 (zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \
82 (zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \
83 (zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \
84 (zip_header).formatted.crc32 = SWAP_LE32((zip_header).formatted.crc32 ); \
85 (zip_header).formatted.cmpsize = SWAP_LE32((zip_header).formatted.cmpsize ); \
86 (zip_header).formatted.ucmpsize = SWAP_LE32((zip_header).formatted.ucmpsize ); \
87 (zip_header).formatted.filename_len = SWAP_LE16((zip_header).formatted.filename_len); \
88 (zip_header).formatted.extra_len = SWAP_LE16((zip_header).formatted.extra_len ); \
89 } while (0)
90
91 #define CDF_HEADER_LEN 42
92
93 typedef union {
94 uint8_t raw[CDF_HEADER_LEN];
95 struct {
96 /* uint32_t signature; 50 4b 01 02 */
97 uint16_t version_made_by; /* 0-1 */
98 uint16_t version_needed; /* 2-3 */
99 uint16_t cdf_flags; /* 4-5 */
100 uint16_t method; /* 6-7 */
101 uint16_t mtime; /* 8-9 */
102 uint16_t mdate; /* 10-11 */
103 uint32_t crc32; /* 12-15 */
104 uint32_t cmpsize; /* 16-19 */
105 uint32_t ucmpsize; /* 20-23 */
106 uint16_t file_name_length; /* 24-25 */
107 uint16_t extra_field_length; /* 26-27 */
108 uint16_t file_comment_length; /* 28-29 */
109 uint16_t disk_number_start; /* 30-31 */
110 uint16_t internal_file_attributes; /* 32-33 */
111 uint32_t external_file_attributes PACKED; /* 34-37 */
112 uint32_t relative_offset_of_local_header PACKED; /* 38-41 */
113 } formatted PACKED;
114 } cdf_header_t;
115
116 struct BUG_cdf_header_must_be_42_bytes {
117 char BUG_cdf_header_must_be_42_bytes[
118 offsetof(cdf_header_t, formatted.relative_offset_of_local_header) + 4
119 == CDF_HEADER_LEN ? 1 : -1];
120 };
121
122 #define FIX_ENDIANNESS_CDF(cdf_header) do { \
123 (cdf_header).formatted.crc32 = SWAP_LE32((cdf_header).formatted.crc32 ); \
124 (cdf_header).formatted.cmpsize = SWAP_LE32((cdf_header).formatted.cmpsize ); \
125 (cdf_header).formatted.ucmpsize = SWAP_LE32((cdf_header).formatted.ucmpsize ); \
126 (cdf_header).formatted.file_name_length = SWAP_LE16((cdf_header).formatted.file_name_length); \
127 (cdf_header).formatted.extra_field_length = SWAP_LE16((cdf_header).formatted.extra_field_length); \
128 (cdf_header).formatted.file_comment_length = SWAP_LE16((cdf_header).formatted.file_comment_length); \
129 IF_DESKTOP( \
130 (cdf_header).formatted.version_made_by = SWAP_LE16((cdf_header).formatted.version_made_by); \
131 (cdf_header).formatted.external_file_attributes = SWAP_LE32((cdf_header).formatted.external_file_attributes); \
132 ) \
133 } while (0)
134
135 #define CDE_HEADER_LEN 16
136
137 typedef union {
138 uint8_t raw[CDE_HEADER_LEN];
139 struct {
140 /* uint32_t signature; 50 4b 05 06 */
141 uint16_t this_disk_no;
142 uint16_t disk_with_cdf_no;
143 uint16_t cdf_entries_on_this_disk;
144 uint16_t cdf_entries_total;
145 uint32_t cdf_size;
146 uint32_t cdf_offset;
147 /* uint16_t file_comment_length; */
148 /* .ZIP file comment (variable size) */
149 } formatted PACKED;
150 } cde_header_t;
151
152 struct BUG_cde_header_must_be_16_bytes {
153 char BUG_cde_header_must_be_16_bytes[
154 sizeof(cde_header_t) == CDE_HEADER_LEN ? 1 : -1];
155 };
156
157 #define FIX_ENDIANNESS_CDE(cde_header) do { \
158 (cde_header).formatted.cdf_offset = SWAP_LE32((cde_header).formatted.cdf_offset); \
159 } while (0)
160
161 enum { zip_fd = 3 };
162
163
164 #if ENABLE_DESKTOP
165
166 #define PEEK_FROM_END 16384
167
168 /* NB: does not preserve file position! */
169 static uint32_t find_cdf_offset(void)
170 {
171 cde_header_t cde_header;
172 unsigned char *p;
173 off_t end;
174 unsigned char *buf = xzalloc(PEEK_FROM_END);
175
176 end = xlseek(zip_fd, 0, SEEK_END);
177 end -= PEEK_FROM_END;
178 if (end < 0)
179 end = 0;
180 xlseek(zip_fd, end, SEEK_SET);
181 full_read(zip_fd, buf, PEEK_FROM_END);
182
183 p = buf;
184 while (p <= buf + PEEK_FROM_END - CDE_HEADER_LEN - 4) {
185 if (*p != 'P') {
186 p++;
187 continue;
188 }
189 if (*++p != 'K')
190 continue;
191 if (*++p != 5)
192 continue;
193 if (*++p != 6)
194 continue;
195 /* we found CDE! */
196 memcpy(cde_header.raw, p + 1, CDE_HEADER_LEN);
197 FIX_ENDIANNESS_CDE(cde_header);
198 free(buf);
199 return cde_header.formatted.cdf_offset;
200 }
201 //free(buf);
202 bb_error_msg_and_die("can't find file table");
203 };
204
205 static uint32_t read_next_cdf(uint32_t cdf_offset, cdf_header_t *cdf_ptr)
206 {
207 off_t org;
208
209 org = xlseek(zip_fd, 0, SEEK_CUR);
210
211 if (!cdf_offset)
212 cdf_offset = find_cdf_offset();
213
214 xlseek(zip_fd, cdf_offset + 4, SEEK_SET);
215 xread(zip_fd, cdf_ptr->raw, CDF_HEADER_LEN);
216 FIX_ENDIANNESS_CDF(*cdf_ptr);
217 cdf_offset += 4 + CDF_HEADER_LEN
218 + cdf_ptr->formatted.file_name_length
219 + cdf_ptr->formatted.extra_field_length
220 + cdf_ptr->formatted.file_comment_length;
221
222 xlseek(zip_fd, org, SEEK_SET);
223 return cdf_offset;
224 };
225 #endif
226
227 static void unzip_skip(off_t skip)
228 {
229 if (lseek(zip_fd, skip, SEEK_CUR) == (off_t)-1)
230 bb_copyfd_exact_size(zip_fd, -1, skip);
231 }
232
233 static void unzip_create_leading_dirs(const char *fn)
234 {
235 /* Create all leading directories */
236 char *name = xstrdup(fn);
237 if (bb_make_directory(dirname(name), 0777, FILEUTILS_RECUR)) {
238 xfunc_die(); /* bb_make_directory is noisy */
239 }
240 free(name);
241 }
242
243 static void unzip_extract(zip_header_t *zip_header, int dst_fd)
244 {
245 if (zip_header->formatted.method == 0) {
246 /* Method 0 - stored (not compressed) */
247 off_t size = zip_header->formatted.ucmpsize;
248 if (size)
249 bb_copyfd_exact_size(zip_fd, dst_fd, size);
250 } else {
251 /* Method 8 - inflate */
252 transformer_aux_data_t aux;
253 init_transformer_aux_data(&aux);
254 aux.bytes_in = zip_header->formatted.cmpsize;
255 if (inflate_unzip(&aux, zip_fd, dst_fd) < 0)
256 bb_error_msg_and_die("inflate error");
257 /* Validate decompression - crc */
258 if (zip_header->formatted.crc32 != (aux.crc32 ^ 0xffffffffL)) {
259 bb_error_msg_and_die("crc error");
260 }
261 /* Validate decompression - size */
262 if (zip_header->formatted.ucmpsize != aux.bytes_out) {
263 /* Don't die. Who knows, maybe len calculation
264 * was botched somewhere. After all, crc matched! */
265 bb_error_msg("bad length");
266 }
267 }
268 }
269
270 int unzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
271 int unzip_main(int argc, char **argv)
272 {
273 enum { O_PROMPT, O_NEVER, O_ALWAYS };
274
275 zip_header_t zip_header;
276 smallint quiet = 0;
277 IF_NOT_DESKTOP(const) smallint verbose = 0;
278 smallint listing = 0;
279 smallint overwrite = O_PROMPT;
280 #if ENABLE_DESKTOP
281 uint32_t cdf_offset;
282 #endif
283 unsigned long total_usize;
284 unsigned long total_size;
285 unsigned total_entries;
286 int dst_fd = -1;
287 char *src_fn = NULL;
288 char *dst_fn = NULL;
289 llist_t *zaccept = NULL;
290 llist_t *zreject = NULL;
291 char *base_dir = NULL;
292 int i, opt;
293 int opt_range = 0;
294 char key_buf[80];
295 struct stat stat_buf;
296
297 /* -q, -l and -v: UnZip 5.52 of 28 February 2005, by Info-ZIP:
298 *
299 * # /usr/bin/unzip -qq -v decompress_unlzma.i.zip
300 * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
301 * # /usr/bin/unzip -q -v decompress_unlzma.i.zip
302 * Length Method Size Ratio Date Time CRC-32 Name
303 * -------- ------ ------- ----- ---- ---- ------ ----
304 * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
305 * -------- ------- --- -------
306 * 204372 35278 83% 1 file
307 * # /usr/bin/unzip -v decompress_unlzma.i.zip
308 * Archive: decompress_unlzma.i.zip
309 * Length Method Size Ratio Date Time CRC-32 Name
310 * -------- ------ ------- ----- ---- ---- ------ ----
311 * 204372 Defl:N 35278 83% 09-06-09 14:23 0d056252 decompress_unlzma.i
312 * -------- ------- --- -------
313 * 204372 35278 83% 1 file
314 * # unzip -v decompress_unlzma.i.zip
315 * Archive: decompress_unlzma.i.zip
316 * Length Date Time Name
317 * -------- ---- ---- ----
318 * 204372 09-06-09 14:23 decompress_unlzma.i
319 * -------- -------
320 * 204372 1 files
321 * # /usr/bin/unzip -l -qq decompress_unlzma.i.zip
322 * 204372 09-06-09 14:23 decompress_unlzma.i
323 * # /usr/bin/unzip -l -q decompress_unlzma.i.zip
324 * Length Date Time Name
325 * -------- ---- ---- ----
326 * 204372 09-06-09 14:23 decompress_unlzma.i
327 * -------- -------
328 * 204372 1 file
329 * # /usr/bin/unzip -l decompress_unlzma.i.zip
330 * Archive: decompress_unlzma.i.zip
331 * Length Date Time Name
332 * -------- ---- ---- ----
333 * 204372 09-06-09 14:23 decompress_unlzma.i
334 * -------- -------
335 * 204372 1 file
336 */
337
338 /* '-' makes getopt return 1 for non-options */
339 while ((opt = getopt(argc, argv, "-d:lnopqxv")) != -1) {
340 switch (opt_range) {
341 case 0: /* Options */
342 switch (opt) {
343 case 'l': /* List */
344 listing = 1;
345 break;
346
347 case 'n': /* Never overwrite existing files */
348 overwrite = O_NEVER;
349 break;
350
351 case 'o': /* Always overwrite existing files */
352 overwrite = O_ALWAYS;
353 break;
354
355 case 'p': /* Extract files to stdout and fall through to set verbosity */
356 dst_fd = STDOUT_FILENO;
357
358 case 'q': /* Be quiet */
359 quiet++;
360 break;
361
362 case 'v': /* Verbose list */
363 IF_DESKTOP(verbose++;)
364 listing = 1;
365 break;
366
367 case 1: /* The zip file */
368 /* +5: space for ".zip" and NUL */
369 src_fn = xmalloc(strlen(optarg) + 5);
370 strcpy(src_fn, optarg);
371 opt_range++;
372 break;
373
374 default:
375 bb_show_usage();
376 }
377 break;
378
379 case 1: /* Include files */
380 if (opt == 1) {
381 llist_add_to(&zaccept, optarg);
382 break;
383 }
384 if (opt == 'd') {
385 base_dir = optarg;
386 opt_range += 2;
387 break;
388 }
389 if (opt == 'x') {
390 opt_range++;
391 break;
392 }
393 bb_show_usage();
394
395 case 2 : /* Exclude files */
396 if (opt == 1) {
397 llist_add_to(&zreject, optarg);
398 break;
399 }
400 if (opt == 'd') { /* Extract to base directory */
401 base_dir = optarg;
402 opt_range++;
403 break;
404 }
405 /* fall through */
406
407 default:
408 bb_show_usage();
409 }
410 }
411
412 if (src_fn == NULL) {
413 bb_show_usage();
414 }
415
416 /* Open input file */
417 if (LONE_DASH(src_fn)) {
418 xdup2(STDIN_FILENO, zip_fd);
419 /* Cannot use prompt mode since zip data is arriving on STDIN */
420 if (overwrite == O_PROMPT)
421 overwrite = O_NEVER;
422 } else {
423 static const char extn[][5] = {"", ".zip", ".ZIP"};
424 int orig_src_fn_len = strlen(src_fn);
425 int src_fd = -1;
426
427 for (i = 0; (i < 3) && (src_fd == -1); i++) {
428 strcpy(src_fn + orig_src_fn_len, extn[i]);
429 src_fd = open(src_fn, O_RDONLY);
430 }
431 if (src_fd == -1) {
432 src_fn[orig_src_fn_len] = '\0';
433 bb_error_msg_and_die("can't open %s, %s.zip, %s.ZIP", src_fn, src_fn, src_fn);
434 }
435 xmove_fd(src_fd, zip_fd);
436 }
437
438 /* Change dir if necessary */
439 if (base_dir)
440 xchdir(base_dir);
441
442 if (quiet <= 1) { /* not -qq */
443 if (quiet == 0)
444 printf("Archive: %s\n", src_fn);
445 if (listing) {
446 puts(verbose ?
447 " Length Method Size Ratio Date Time CRC-32 Name\n"
448 "-------- ------ ------- ----- ---- ---- ------ ----"
449 :
450 " Length Date Time Name\n"
451 " -------- ---- ---- ----"
452 );
453 }
454 }
455
456 /* Example of an archive with one 0-byte long file named 'z'
457 * created by Zip 2.31 on Unix:
458 * 0000 [50 4b]03 04 0a 00 00 00 00 00 42 1a b8 3c 00 00 |PK........B..<..|
459 * sig........ vneed flags compr mtime mdate crc32>
460 * 0010 00 00 00 00 00 00 00 00 00 00 01 00 15 00 7a 55 |..............zU|
461 * >..... csize...... usize...... fnlen exlen fn ex>
462 * 0020 54 09 00 03 cc d3 f9 4b cc d3 f9 4b 55 78 04 00 |T......K...KUx..|
463 * >tra_field......................................
464 * 0030 00 00 00 00[50 4b]01 02 17 03 0a 00 00 00 00 00 |....PK..........|
465 * ........... sig........ vmade vneed flags compr
466 * 0040 42 1a b8 3c 00 00 00 00 00 00 00 00 00 00 00 00 |B..<............|
467 * mtime mdate crc32...... csize...... usize......
468 * 0050 01 00 0d 00 00 00 00 00 00 00 00 00 a4 81 00 00 |................|
469 * fnlen exlen clen. dnum. iattr eattr...... relofs> (eattr = rw-r--r--)
470 * 0060 00 00 7a 55 54 05 00 03 cc d3 f9 4b 55 78 00 00 |..zUT......KUx..|
471 * >..... fn extra_field...........................
472 * 0070 [50 4b]05 06 00 00 00 00 01 00 01 00 3c 00 00 00 |PK..........<...|
473 * 0080 34 00 00 00 00 00 |4.....|
474 */
475 total_usize = 0;
476 total_size = 0;
477 total_entries = 0;
478 #if ENABLE_DESKTOP
479 cdf_offset = 0;
480 #endif
481 while (1) {
482 uint32_t magic;
483 mode_t dir_mode = 0777;
484 #if ENABLE_DESKTOP
485 mode_t file_mode = 0666;
486 #endif
487
488 /* Check magic number */
489 xread(zip_fd, &magic, 4);
490 /* Central directory? It's at the end, so exit */
491 if (magic == ZIP_CDF_MAGIC)
492 break;
493 #if ENABLE_DESKTOP
494 /* Data descriptor? It was a streaming file, go on */
495 if (magic == ZIP_DD_MAGIC) {
496 /* skip over duplicate crc32, cmpsize and ucmpsize */
497 unzip_skip(3 * 4);
498 continue;
499 }
500 #endif
501 if (magic != ZIP_FILEHEADER_MAGIC)
502 bb_error_msg_and_die("invalid zip magic %08X", (int)magic);
503
504 /* Read the file header */
505 xread(zip_fd, zip_header.raw, ZIP_HEADER_LEN);
506 FIX_ENDIANNESS_ZIP(zip_header);
507 if ((zip_header.formatted.method != 0) && (zip_header.formatted.method != 8)) {
508 bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method);
509 }
510 #if !ENABLE_DESKTOP
511 if (zip_header.formatted.zip_flags & SWAP_LE16(0x0009)) {
512 bb_error_msg_and_die("zip flags 1 and 8 are not supported");
513 }
514 #else
515 if (zip_header.formatted.zip_flags & SWAP_LE16(0x0001)) {
516 /* 0x0001 - encrypted */
517 bb_error_msg_and_die("zip flag 1 (encryption) is not supported");
518 }
519
520 {
521 cdf_header_t cdf_header;
522 cdf_offset = read_next_cdf(cdf_offset, &cdf_header);
523 if (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) {
524 /* 0x0008 - streaming. [u]cmpsize can be reliably gotten
525 * only from Central Directory. See unzip_doc.txt */
526 zip_header.formatted.crc32 = cdf_header.formatted.crc32;
527 zip_header.formatted.cmpsize = cdf_header.formatted.cmpsize;
528 zip_header.formatted.ucmpsize = cdf_header.formatted.ucmpsize;
529 }
530 if ((cdf_header.formatted.version_made_by >> 8) == 3) {
531 /* this archive is created on Unix */
532 dir_mode = file_mode = (cdf_header.formatted.external_file_attributes >> 16);
533 }
534 }
535 #endif
536
537 /* Read filename */
538 free(dst_fn);
539 dst_fn = xzalloc(zip_header.formatted.filename_len + 1);
540 xread(zip_fd, dst_fn, zip_header.formatted.filename_len);
541
542 /* Skip extra header bytes */
543 unzip_skip(zip_header.formatted.extra_len);
544
545 /* Filter zip entries */
546 if (find_list_entry(zreject, dst_fn)
547 || (zaccept && !find_list_entry(zaccept, dst_fn))
548 ) { /* Skip entry */
549 i = 'n';
550
551 } else { /* Extract entry */
552 if (listing) { /* List entry */
553 unsigned dostime = zip_header.formatted.modtime | (zip_header.formatted.moddate << 16);
554 if (!verbose) {
555 // " Length Date Time Name\n"
556 // " -------- ---- ---- ----"
557 printf( "%9u %02u-%02u-%02u %02u:%02u %s\n",
558 (unsigned)zip_header.formatted.ucmpsize,
559 (dostime & 0x01e00000) >> 21,
560 (dostime & 0x001f0000) >> 16,
561 (((dostime & 0xfe000000) >> 25) + 1980) % 100,
562 (dostime & 0x0000f800) >> 11,
563 (dostime & 0x000007e0) >> 5,
564 dst_fn);
565 total_usize += zip_header.formatted.ucmpsize;
566 } else {
567 unsigned long percents = zip_header.formatted.ucmpsize - zip_header.formatted.cmpsize;
568 percents = percents * 100;
569 if (zip_header.formatted.ucmpsize)
570 percents /= zip_header.formatted.ucmpsize;
571 // " Length Method Size Ratio Date Time CRC-32 Name\n"
572 // "-------- ------ ------- ----- ---- ---- ------ ----"
573 printf( "%8u Defl:N" "%9u%4u%% %02u-%02u-%02u %02u:%02u %08x %s\n",
574 (unsigned)zip_header.formatted.ucmpsize,
575 (unsigned)zip_header.formatted.cmpsize,
576 (unsigned)percents,
577 (dostime & 0x01e00000) >> 21,
578 (dostime & 0x001f0000) >> 16,
579 (((dostime & 0xfe000000) >> 25) + 1980) % 100,
580 (dostime & 0x0000f800) >> 11,
581 (dostime & 0x000007e0) >> 5,
582 zip_header.formatted.crc32,
583 dst_fn);
584 total_usize += zip_header.formatted.ucmpsize;
585 total_size += zip_header.formatted.cmpsize;
586 }
587 i = 'n';
588 } else if (dst_fd == STDOUT_FILENO) { /* Extracting to STDOUT */
589 i = -1;
590 } else if (last_char_is(dst_fn, '/')) { /* Extract directory */
591 if (stat(dst_fn, &stat_buf) == -1) {
592 if (errno != ENOENT) {
593 bb_perror_msg_and_die("can't stat '%s'", dst_fn);
594 }
595 if (!quiet) {
596 printf(" creating: %s\n", dst_fn);
597 }
598 unzip_create_leading_dirs(dst_fn);
599 if (bb_make_directory(dst_fn, dir_mode, 0)) {
600 xfunc_die();
601 }
602 } else {
603 if (!S_ISDIR(stat_buf.st_mode)) {
604 bb_error_msg_and_die("'%s' exists but is not directory", dst_fn);
605 }
606 }
607 i = 'n';
608
609 } else { /* Extract file */
610 check_file:
611 if (stat(dst_fn, &stat_buf) == -1) { /* File does not exist */
612 if (errno != ENOENT) {
613 bb_perror_msg_and_die("can't stat '%s'", dst_fn);
614 }
615 i = 'y';
616 } else { /* File already exists */
617 if (overwrite == O_NEVER) {
618 i = 'n';
619 } else if (S_ISREG(stat_buf.st_mode)) { /* File is regular file */
620 if (overwrite == O_ALWAYS) {
621 i = 'y';
622 } else {
623 printf("replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ", dst_fn);
624 fflush_all();
625 if (!fgets(key_buf, sizeof(key_buf), stdin)) {
626 bb_perror_msg_and_die("can't read input");
627 }
628 i = key_buf[0];
629 }
630 } else { /* File is not regular file */
631 bb_error_msg_and_die("'%s' exists but is not regular file", dst_fn);
632 }
633 }
634 }
635 }
636
637 switch (i) {
638 case 'A':
639 overwrite = O_ALWAYS;
640 case 'y': /* Open file and fall into unzip */
641 unzip_create_leading_dirs(dst_fn);
642 #if ENABLE_DESKTOP
643 dst_fd = xopen3(dst_fn, O_WRONLY | O_CREAT | O_TRUNC, file_mode);
644 #else
645 dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC);
646 #endif
647 case -1: /* Unzip */
648 if (!quiet) {
649 printf(" inflating: %s\n", dst_fn);
650 }
651 unzip_extract(&zip_header, dst_fd);
652 if (dst_fd != STDOUT_FILENO) {
653 /* closing STDOUT is potentially bad for future business */
654 close(dst_fd);
655 }
656 break;
657
658 case 'N':
659 overwrite = O_NEVER;
660 case 'n':
661 /* Skip entry data */
662 unzip_skip(zip_header.formatted.cmpsize);
663 break;
664
665 case 'r':
666 /* Prompt for new name */
667 printf("new name: ");
668 if (!fgets(key_buf, sizeof(key_buf), stdin)) {
669 bb_perror_msg_and_die("can't read input");
670 }
671 free(dst_fn);
672 dst_fn = xstrdup(key_buf);
673 chomp(dst_fn);
674 goto check_file;
675
676 default:
677 printf("error: invalid response [%c]\n", (char)i);
678 goto check_file;
679 }
680
681 total_entries++;
682 }
683
684 if (listing && quiet <= 1) {
685 if (!verbose) {
686 // " Length Date Time Name\n"
687 // " -------- ---- ---- ----"
688 printf( " -------- -------\n"
689 "%9lu" " %u files\n",
690 total_usize, total_entries);
691 } else {
692 unsigned long percents = total_usize - total_size;
693 percents = percents * 100;
694 if (total_usize)
695 percents /= total_usize;
696 // " Length Method Size Ratio Date Time CRC-32 Name\n"
697 // "-------- ------ ------- ----- ---- ---- ------ ----"
698 printf( "-------- ------- --- -------\n"
699 "%8lu" "%17lu%4u%% %u files\n",
700 total_usize, total_size, (unsigned)percents,
701 total_entries);
702 }
703 }
704
705 return 0;
706 }
Tomato firmware and modifications.