1 /* ------------------------------------------------------------------------ */
3 /* lhext.c -- LHarc extract */
5 /* Copyright (C) MCMLXXXIX Yooichi.Tagawa */
6 /* Modified Nobutaka Watazaki */
8 /* Ver. 0.00 Original 1988.05.23 Y.Tagawa */
9 /* Ver. 1.00 Fixed 1989.09.22 Y.Tagawa */
10 /* Ver. 0.03 LHa for UNIX 1991.12.17 M.Oki */
11 /* Ver. 1.12 LHa for UNIX 1993.10.01 N.Watazaki */
12 /* Ver. 1.13b Symbolic Link Update Bug Fix 1994.06.21 N.Watazaki */
13 /* Ver. 1.14 Source All chagned 1995.01.14 N.Watazaki */
14 /* Ver. 1.14e bugfix 1999.04.30 T.Okamoto */
15 /* ------------------------------------------------------------------------ */
17 /* ------------------------------------------------------------------------ */
18 static int skip_flg = FALSE; /* FALSE..No Skip , TRUE..Skip */
19 static char *methods[] =
21 LZHUFF0_METHOD, LZHUFF1_METHOD, LZHUFF2_METHOD, LZHUFF3_METHOD,
22 LZHUFF4_METHOD, LZHUFF5_METHOD, LZHUFF6_METHOD, LZHUFF7_METHOD,
23 LARC_METHOD, LARC5_METHOD, LARC4_METHOD,
25 PMARC0_METHOD, PMARC2_METHOD,
29 static void add_dirinfo(char* name, LzHeader* hdr);
30 static void adjust_dirinfo();
32 #ifdef HAVE_LIBAPPLEFILE
33 static boolean decode_macbinary(FILE *ofp, off_t size, const char *outPath);
36 /* ------------------------------------------------------------------------ */
44 if (stat(name, &stbuf) >= 0) {
45 if (!is_regularfile(&stbuf)) {
46 error("\"%s\" already exists (not a file)", name);
51 printf("EXTRACT %s but file is exist.\n", name);
56 warning("skip to extract %s.", name);
60 switch (inquire("OverWrite ?(Yes/[No]/All/Skip)", name, "YyNnAaSs\n")) {
81 printf("EXTRACT %s\n", name);
87 make_name_with_pathcheck(char *name, size_t namesz, const char *q)
94 if (extract_directory) {
95 sz = xsnprintf(name, namesz, "%s/", extract_directory);
103 while ((p = strchr(q, '/')) != NULL) {
104 if (namesz - offset < (p - q) + 2) {
107 memcpy(name + offset, q, (p - q));
108 name[offset + (p - q)] = 0;
113 if (lstat(name, &stbuf) < 0) {
114 name[offset++] = '/';
117 if (is_symlink(&stbuf)) {
120 name[offset++] = '/';
124 str_safe_copy(name + offset, q, namesz - offset);
129 /* ------------------------------------------------------------------------ */
131 make_parent_path(name)
134 char path[FILENAME_LENGTH];
138 /* make parent directory name into PATH for recursive call */
139 str_safe_copy(path, name, sizeof(path));
140 for (p = path + strlen(path); p > path; p--)
147 message("invalid path name \"%s\"", name);
148 return FALSE; /* no more parent. */
151 if (GETSTAT(path, &stbuf) >= 0) {
152 if (is_directory(&stbuf))
157 message("Making directory \"%s\".", path);
159 #if defined __MINGW32__
160 if (mkdir(path) >= 0)
163 if (mkdir(path, 0777) >= 0) /* try */
164 return TRUE; /* successful done. */
167 if (!make_parent_path(path))
170 #if defined __MINGW32__
171 if (mkdir(path) < 0) { /* try again */
172 error("Cannot make directory \"%s\"", path);
176 if (mkdir(path, 0777) < 0) { /* try again */
177 error("Cannot make directory \"%s\"", path);
185 /* ------------------------------------------------------------------------ */
187 open_with_make_path(name)
192 if ((fp = fopen(name, WRITE_BINARY)) == NULL) {
193 if (!make_parent_path(name) ||
194 (fp = fopen(name, WRITE_BINARY)) == NULL)
195 error("Cannot extract a file \"%s\"", name);
200 /* ------------------------------------------------------------------------ */
202 symlink_with_make_path(realname, name)
203 const char *realname;
208 l_code = symlink(realname, name);
210 make_parent_path(name);
211 l_code = symlink(realname, name);
217 /* ------------------------------------------------------------------------ */
219 adjust_info(name, hdr)
223 struct utimbuf utimebuf;
225 /* adjust file stamp */
226 utimebuf.actime = utimebuf.modtime = hdr->unix_last_modified_stamp;
228 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_SYMLINK)
229 utime(name, &utimebuf);
231 if (hdr->extend_type == EXTEND_UNIX
232 || hdr->extend_type == EXTEND_OS68K
233 || hdr->extend_type == EXTEND_XOSK) {
235 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_SYMLINK) {
236 chmod(name, hdr->unix_mode);
240 uid_t uid = hdr->unix_uid;
241 gid_t gid = hdr->unix_gid;
243 #if HAVE_GETPWNAM && HAVE_GETGRNAM
245 struct passwd *ent = getpwnam(hdr->user);
246 if (ent) uid = ent->pw_uid;
249 struct group *ent = getgrnam(hdr->group);
250 if (ent) gid = ent->gr_gid;
255 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK)
256 lchown(name, uid, gid);
258 #endif /* HAVE_LCHWON */
259 chown(name, uid, gid);
264 /* On Cygwin, execute permission should be set for .exe or .dll. */
267 umask(m = umask(0)); /* get current umask */
268 chmod(name, 0777 & ~m);
273 /* ------------------------------------------------------------------------ */
275 extract_one(afp, hdr)
276 FILE *afp; /* archive file */
279 FILE *fp; /* output file */
280 #if HAVE_LIBAPPLEFILE
281 FILE *tfp; /* temporary output file */
284 char name[FILENAME_LENGTH];
287 boolean save_quiet, save_verbose, up_flag;
288 char *q = hdr->name, c;
291 if (ignore_directory && strrchr(hdr->name, '/')) {
292 q = (char *) strrchr(hdr->name, '/') + 1;
295 if (is_directory_traversal(q)) {
296 error("Possible directory traversal hack attempt in %s", q);
301 while (*q == '/') { q++; }
304 * if OSK then strip device name
306 if (hdr->extend_type == EXTEND_OS68K
307 || hdr->extend_type == EXTEND_XOSK) {
310 while (c && c != '/');
312 q = "."; /* if device name only */
317 if (!make_name_with_pathcheck(name, sizeof(name), q)) {
318 error("Possible symlink traversal hack attempt in %s", q);
322 /* LZHDIRS_METHODを持つヘッダをチェックする */
323 /* 1999.4.30 t.okamoto */
324 for (method = 0;; method++) {
325 if (methods[method] == NULL) {
326 error("Unknown method \"%.*s\"; \"%s\" will be skipped ...",
327 5, hdr->method, name);
330 if (memcmp(hdr->method, methods[method], 5) == 0)
334 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_REGULAR
335 && method != LZHDIRS_METHOD_NUM) {
338 for (method = 0;; method++) {
339 if (methods[method] == NULL) {
340 error("Unknown method \"%.*s\"; \"%s\" will be skipped ...",
341 5, hdr->method, name);
344 if (memcmp(hdr->method, methods[method], 5) == 0)
349 reading_filename = archive_name;
350 writing_filename = name;
351 if (output_to_stdout || verify_mode) {
352 /* "Icon\r" should be a resource fork file encoded in MacBinary
353 format, so that it should be skipped. */
354 if (hdr->extend_type == EXTEND_MACOS
355 && strcmp(basename(name), "Icon\r") == 0
356 && decode_macbinary_contents) {
361 printf("%s %s\n", verify_mode ? "VERIFY" : "EXTRACT", name);
366 save_verbose = verbose;
367 if (!quiet && output_to_stdout) {
368 printf("::::::::\n%s\n::::::::\n", name);
372 else if (verify_mode) {
377 #if defined(__MINGW32__) || defined(__DJGPP__)
381 old_mode = setmode(fileno(stdout), O_BINARY);
384 #if HAVE_LIBAPPLEFILE
385 /* On default, MacLHA encodes into MacBinary. */
386 if (hdr->extend_type == EXTEND_MACOS && !verify_mode && decode_macbinary_contents) {
387 /* build temporary file */
388 tfp = NULL; /* avoid compiler warnings `uninitialized' */
389 tfp = build_temporary_file();
391 crc = decode_lzhuf(afp, tfp,
392 hdr->original_size, hdr->packed_size,
393 name, method, &read_size);
395 decode_macbinary(stdout, hdr->original_size, name);
396 unlink(temporary_name);
398 crc = decode_lzhuf(afp, stdout,
399 hdr->original_size, hdr->packed_size,
400 name, method, &read_size);
403 crc = decode_lzhuf(afp, stdout,
404 hdr->original_size, hdr->packed_size,
405 name, method, &read_size);
406 #endif /* HAVE_LIBAPPLEFILE */
407 #if defined(__MINGW32__) || defined(__DJGPP__)
409 setmode(fileno(stdout), old_mode);
413 verbose = save_verbose;
417 /* "Icon\r" should be a resource fork of parent folder's icon,
418 so that it can be skipped when system is not Mac OS X. */
419 if (hdr->extend_type == EXTEND_MACOS
420 && strcmp(basename(name), "Icon\r") == 0
421 && decode_macbinary_contents) {
422 make_parent_path(name); /* create directory only */
425 #endif /* __APPLE__ */
426 if (skip_flg == FALSE) {
427 up_flag = inquire_extract(name);
428 if (up_flag == FALSE && force == FALSE) {
433 if (skip_flg == TRUE) {
434 if (stat(name, &stbuf) == 0 && force != TRUE) {
436 printf("%s : Skipped...\n", name);
444 signal(SIGINT, interrupt);
446 signal(SIGHUP, interrupt);
450 remove_extracting_file_when_interrupt = TRUE;
452 if ((fp = open_with_make_path(name)) != NULL) {
453 #if HAVE_LIBAPPLEFILE
454 if (hdr->extend_type == EXTEND_MACOS && !verify_mode && decode_macbinary_contents) {
455 /* build temporary file */
456 tfp = NULL; /* avoid compiler warnings `uninitialized' */
457 tfp = build_temporary_file();
459 crc = decode_lzhuf(afp, tfp,
460 hdr->original_size, hdr->packed_size,
461 name, method, &read_size);
463 decode_macbinary(fp, hdr->original_size, name);
465 /* TODO: set resource fork */
466 /* after processing, "Icon\r" is not needed. */
467 if (strcmp(basename(name), "Icon\r") == 0) {
470 #endif /* __APPLE__ */
471 unlink(temporary_name);
473 crc = decode_lzhuf(afp, fp,
474 hdr->original_size, hdr->packed_size,
475 name, method, &read_size);
477 #else /* HAVE_LIBAPPLEFILE */
478 crc = decode_lzhuf(afp, fp,
479 hdr->original_size, hdr->packed_size,
480 name, method, &read_size);
481 #endif /* HAVE_LIBAPPLEFILE */
484 remove_extracting_file_when_interrupt = FALSE;
485 signal(SIGINT, SIG_DFL);
487 signal(SIGHUP, SIG_DFL);
493 if (hdr->has_crc && crc != hdr->crc)
494 error("CRC error: \"%s\"", name);
496 else if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_DIRECTORY
497 || (hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK
498 || method == LZHDIRS_METHOD_NUM) {
499 /* ↑これで、Symbolic Link は、大丈夫か? */
500 if (!ignore_directory && !verify_mode && !output_to_stdout) {
503 printf("EXTRACT %s (directory)\n", name);
506 /* NAME has trailing SLASH '/', (^_^) */
507 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK) {
511 if (skip_flg == FALSE) {
512 up_flag = inquire_extract(name);
513 if (up_flag == FALSE && force == FALSE) {
518 if (skip_flg == TRUE) {
519 if (GETSTAT(name, &stbuf) == 0 && force != TRUE) {
521 printf("%s : Skipped...\n", name);
527 l_code = symlink_with_make_path(hdr->realname, name);
530 warning("Can't make Symbolic Link \"%s\" -> \"%s\"",
531 name, hdr->realname);
534 message("Symbolic Link %s -> %s",
535 name, hdr->realname);
538 warning("Can't make Symbolic Link %s -> %s",
539 name, hdr->realname);
543 else { /* make directory */
544 if (!make_parent_path(name))
546 /* save directory information */
547 add_dirinfo(name, hdr);
552 if (force) /* force extract */
553 goto extract_regular;
555 error("Unknown file type: \"%s\". use `f' option to force extract.", name);
558 if (!output_to_stdout && !verify_mode) {
559 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_DIRECTORY)
560 adjust_info(name, hdr);
567 skip_to_nextpos(FILE *fp, off_t pos, off_t off, off_t read_size)
570 if (fseeko(fp, pos + off, SEEK_SET) != 0) {
575 off_t i = off - read_size;
577 if (fgetc(fp) == EOF) {
585 /* ------------------------------------------------------------------------ */
586 /* EXTRACT COMMAND MAIN */
587 /* ------------------------------------------------------------------------ */
596 /* open archive file */
597 if ((afp = open_old_archive()) == NULL)
598 fatal_error("Cannot open archive file \"%s\"", archive_name);
600 if (archive_is_msdos_sfx1(archive_name))
601 seek_lha_header(afp);
603 /* extract each files */
604 while (get_header(afp, &hdr)) {
606 if (need_file(hdr.name)) {
607 read_size = extract_one(afp, &hdr);
608 if (read_size != hdr.packed_size) {
609 /* when error occurred in extract_one(), should adjust
610 point of file stream */
611 if (skip_to_nextpos(afp, pos, hdr.packed_size, read_size) == -1) {
612 fatal_error("Cannot seek to next header position from \"%s\"", hdr.name);
616 if (skip_to_nextpos(afp, pos, hdr.packed_size, 0) == -1) {
617 fatal_error("Cannot seek to next header position from \"%s\"", hdr.name);
622 /* close archive file */
625 /* adjust directory information */
632 is_directory_traversal(char *path)
636 for (; *path; path++) {
639 if (*path == '.') state = 1;
643 if (*path == '.') state = 2;
644 else if (*path == '/') state = 0;
648 if (*path == '/') return 1;
652 if (*path == '/') state = 0;
661 * restore directory information (timestamp, permission and uid/gid).
662 * added by A.Iriyama 2003.12.12
665 typedef struct LzHeaderList_t {
666 struct LzHeaderList_t *next;
670 static LzHeaderList *dirinfo;
672 static void add_dirinfo(char *name, LzHeader *hdr)
674 LzHeaderList *p, *tmp, top;
676 if (memcmp(hdr->method, LZHDIRS_METHOD, 5) != 0)
679 p = xmalloc(sizeof(LzHeaderList));
681 memcpy(&p->hdr, hdr, sizeof(LzHeader));
682 strncpy(p->hdr.name, name, sizeof(p->hdr.name));
683 p->hdr.name[sizeof(p->hdr.name)-1] = 0;
695 reverse sorted by pathname order
699 dirinfo->hdr.name = "a/b/d"
700 dirinfo->next->hdr.name = "a/b/c"
701 dirinfo->next->next->hdr.name = "a/b"
705 dirinfo->hdr.name = "a/b/d"
706 dirinfo->next->hdr.name = "a/b/c"
707 dirinfo->next->next->hdr.name = "a/b"
708 dirinfo->next->next->next->hdr.name = "a"
713 for (tmp = ⊤ tmp->next; tmp = tmp->next) {
714 if (strcmp(p->hdr.name, tmp->next->hdr.name) > 0) {
720 if (tmp->next == NULL) {
729 static void adjust_dirinfo()
732 /* message("adjusting [%s]", dirinfo->hdr.name); */
733 adjust_info(dirinfo->hdr.name, &dirinfo->hdr);
736 LzHeaderList *tmp = dirinfo;
737 dirinfo = dirinfo->next;
743 #if HAVE_LIBAPPLEFILE
745 decode_macbinary(ofp, size, outPath)
750 af_file_t *afp = NULL;
752 unsigned char *datap;
755 if ((afp = af_open(temporary_name)) != NULL) {
757 datap = af_data(afp, &dlen);
758 fwrite(datap, sizeof(unsigned char), dlen, ofp);
761 } else { /* it may be not encoded in MacBinary */
763 if ((ifp = fopen(temporary_name, READ_BINARY)) == NULL) {
764 error("Cannot open a temporary file \"%s\"", temporary_name);
767 copyfile(ifp, ofp, size, 0, 0);
774 #endif /* HAVE_LIBAPPLEFILE */