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, size_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 adjust_info(name, hdr)
206 struct utimbuf utimebuf;
208 /* adjust file stamp */
209 utimebuf.actime = utimebuf.modtime = hdr->unix_last_modified_stamp;
211 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_SYMLINK)
212 utime(name, &utimebuf);
214 if (hdr->extend_type == EXTEND_UNIX
215 || hdr->extend_type == EXTEND_OS68K
216 || hdr->extend_type == EXTEND_XOSK) {
218 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_SYMLINK) {
219 chmod(name, hdr->unix_mode);
223 uid_t uid = hdr->unix_uid;
224 gid_t gid = hdr->unix_gid;
226 #if HAVE_GETPWNAM && HAVE_GETGRNAM
228 struct passwd *ent = getpwnam(hdr->user);
229 if (ent) uid = ent->pw_uid;
232 struct group *ent = getgrnam(hdr->group);
233 if (ent) gid = ent->gr_gid;
238 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK)
239 lchown(name, uid, gid);
241 #endif /* HAVE_LCHWON */
242 chown(name, uid, gid);
247 /* On Cygwin, execute permission should be set for .exe or .dll. */
250 umask(m = umask(0)); /* get current umask */
251 chmod(name, 0777 & ~m);
256 /* ------------------------------------------------------------------------ */
258 extract_one(afp, hdr)
259 FILE *afp; /* archive file */
262 FILE *fp; /* output file */
263 #if HAVE_LIBAPPLEFILE
264 FILE *tfp; /* temporary output file */
267 char name[FILENAME_LENGTH];
270 boolean save_quiet, save_verbose, up_flag;
271 char *q = hdr->name, c;
274 if (ignore_directory && strrchr(hdr->name, '/')) {
275 q = (char *) strrchr(hdr->name, '/') + 1;
278 if (is_directory_traversal(q)) {
279 error("Possible directory traversal hack attempt in %s", q);
284 while (*q == '/') { q++; }
287 * if OSK then strip device name
289 if (hdr->extend_type == EXTEND_OS68K
290 || hdr->extend_type == EXTEND_XOSK) {
293 while (c && c != '/');
295 q = "."; /* if device name only */
300 if (!make_name_with_pathcheck(name, sizeof(name), q)) {
301 error("Possible symlink traversal hack attempt in %s", q);
305 /* LZHDIRS_METHODを持つヘッダをチェックする */
306 /* 1999.4.30 t.okamoto */
307 for (method = 0;; method++) {
308 if (methods[method] == NULL) {
309 error("Unknown method \"%.*s\"; \"%s\" will be skipped ...",
310 5, hdr->method, name);
313 if (memcmp(hdr->method, methods[method], 5) == 0)
317 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_REGULAR
318 && method != LZHDIRS_METHOD_NUM) {
321 for (method = 0;; method++) {
322 if (methods[method] == NULL) {
323 error("Unknown method \"%.*s\"; \"%s\" will be skipped ...",
324 5, hdr->method, name);
327 if (memcmp(hdr->method, methods[method], 5) == 0)
332 reading_filename = archive_name;
333 writing_filename = name;
334 if (output_to_stdout || verify_mode) {
335 /* "Icon\r" should be a resource fork file encoded in MacBinary
336 format, so that it should be skipped. */
337 if (hdr->extend_type == EXTEND_MACOS
338 && strcmp(basename(name), "Icon\r") == 0
339 && decode_macbinary_contents) {
344 printf("%s %s\n", verify_mode ? "VERIFY" : "EXTRACT", name);
349 save_verbose = verbose;
350 if (!quiet && output_to_stdout) {
351 printf("::::::::\n%s\n::::::::\n", name);
355 else if (verify_mode) {
360 #if defined(__MINGW32__) || defined(__DJGPP__)
364 old_mode = setmode(fileno(stdout), O_BINARY);
367 #if HAVE_LIBAPPLEFILE
368 /* On default, MacLHA encodes into MacBinary. */
369 if (hdr->extend_type == EXTEND_MACOS && !verify_mode && decode_macbinary_contents) {
370 /* build temporary file */
371 tfp = NULL; /* avoid compiler warnings `uninitialized' */
372 tfp = build_temporary_file();
374 crc = decode_lzhuf(afp, tfp,
375 hdr->original_size, hdr->packed_size,
376 name, method, &read_size);
378 decode_macbinary(stdout, hdr->original_size, name);
379 unlink(temporary_name);
381 crc = decode_lzhuf(afp, stdout,
382 hdr->original_size, hdr->packed_size,
383 name, method, &read_size);
386 crc = decode_lzhuf(afp, stdout,
387 hdr->original_size, hdr->packed_size,
388 name, method, &read_size);
389 #endif /* HAVE_LIBAPPLEFILE */
390 #if defined(__MINGW32__) || defined(__DJGPP__)
392 setmode(fileno(stdout), old_mode);
396 verbose = save_verbose;
400 /* "Icon\r" should be a resource fork of parent folder's icon,
401 so that it can be skipped when system is not Mac OS X. */
402 if (hdr->extend_type == EXTEND_MACOS
403 && strcmp(basename(name), "Icon\r") == 0
404 && decode_macbinary_contents) {
405 make_parent_path(name); /* create directory only */
408 #endif /* __APPLE__ */
409 if (skip_flg == FALSE) {
410 up_flag = inquire_extract(name);
411 if (up_flag == FALSE && force == FALSE) {
416 if (skip_flg == TRUE) { /* if skip_flg */
417 if (stat(name, &stbuf) == 0 && force != TRUE) {
418 if (stbuf.st_mtime >= hdr->unix_last_modified_stamp) {
420 printf("%s : Skipped...\n", name);
429 signal(SIGINT, interrupt);
431 signal(SIGHUP, interrupt);
435 remove_extracting_file_when_interrupt = TRUE;
437 if ((fp = open_with_make_path(name)) != NULL) {
438 #if HAVE_LIBAPPLEFILE
439 if (hdr->extend_type == EXTEND_MACOS && !verify_mode && decode_macbinary_contents) {
440 /* build temporary file */
441 tfp = NULL; /* avoid compiler warnings `uninitialized' */
442 tfp = build_temporary_file();
444 crc = decode_lzhuf(afp, tfp,
445 hdr->original_size, hdr->packed_size,
446 name, method, &read_size);
448 decode_macbinary(fp, hdr->original_size, name);
450 /* TODO: set resource fork */
451 /* after processing, "Icon\r" is not needed. */
452 if (strcmp(basename(name), "Icon\r") == 0) {
455 #endif /* __APPLE__ */
456 unlink(temporary_name);
458 crc = decode_lzhuf(afp, fp,
459 hdr->original_size, hdr->packed_size,
460 name, method, &read_size);
462 #else /* HAVE_LIBAPPLEFILE */
463 crc = decode_lzhuf(afp, fp,
464 hdr->original_size, hdr->packed_size,
465 name, method, &read_size);
466 #endif /* HAVE_LIBAPPLEFILE */
469 remove_extracting_file_when_interrupt = FALSE;
470 signal(SIGINT, SIG_DFL);
472 signal(SIGHUP, SIG_DFL);
478 if (hdr->has_crc && crc != hdr->crc)
479 error("CRC error: \"%s\"", name);
481 else if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_DIRECTORY
482 || (hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK
483 || method == LZHDIRS_METHOD_NUM) {
484 /* ↑これで、Symbolic Link は、大丈夫か? */
485 if (!ignore_directory && !verify_mode && !output_to_stdout) {
488 printf("EXTRACT %s (directory)\n", name);
491 /* NAME has trailing SLASH '/', (^_^) */
492 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) == UNIX_FILE_SYMLINK) {
496 if (skip_flg == FALSE) {
497 up_flag = inquire_extract(name);
498 if (up_flag == FALSE && force == FALSE) {
502 if (GETSTAT(name, &stbuf) == 0 && force != TRUE) {
503 if (stbuf.st_mtime >= hdr->unix_last_modified_stamp) {
505 printf("%s : Skipped...\n", name);
512 make_parent_path(name);
513 l_code = symlink(hdr->realname, name);
516 warning("Can't make Symbolic Link \"%s\" -> \"%s\"",
517 name, hdr->realname);
520 message("Symbolic Link %s -> %s",
521 name, hdr->realname);
524 warning("Can't make Symbolic Link %s -> %s",
525 name, hdr->realname);
529 else { /* make directory */
530 if (!make_parent_path(name))
532 /* save directory information */
533 add_dirinfo(name, hdr);
538 if (force) /* force extract */
539 goto extract_regular;
541 error("Unknown file type: \"%s\". use `f' option to force extract.", name);
544 if (!output_to_stdout && !verify_mode) {
545 if ((hdr->unix_mode & UNIX_FILE_TYPEMASK) != UNIX_FILE_DIRECTORY)
546 adjust_info(name, hdr);
553 skip_to_nextpos(FILE *fp, off_t pos, off_t off, off_t read_size)
556 if (fseeko(fp, pos + off, SEEK_SET) != 0) {
561 off_t i = off - read_size;
563 if (fgetc(fp) == EOF) {
571 /* ------------------------------------------------------------------------ */
572 /* EXTRACT COMMAND MAIN */
573 /* ------------------------------------------------------------------------ */
582 /* open archive file */
583 if ((afp = open_old_archive()) == NULL)
584 fatal_error("Cannot open archive file \"%s\"", archive_name);
586 if (archive_is_msdos_sfx1(archive_name))
587 seek_lha_header(afp);
589 /* extract each files */
590 while (get_header(afp, &hdr)) {
592 if (need_file(hdr.name)) {
593 read_size = extract_one(afp, &hdr);
594 if (read_size != hdr.packed_size) {
595 /* when error occurred in extract_one(), should adjust
596 point of file stream */
597 if (skip_to_nextpos(afp, pos, hdr.packed_size, read_size) == -1) {
598 fatal_error("Cannot seek to next header position from \"%s\"", hdr.name);
602 if (skip_to_nextpos(afp, pos, hdr.packed_size, 0) == -1) {
603 fatal_error("Cannot seek to next header position from \"%s\"", hdr.name);
608 /* close archive file */
611 /* adjust directory information */
618 is_directory_traversal(char *path)
622 for (; *path; path++) {
625 if (*path == '.') state = 1;
629 if (*path == '.') state = 2;
630 else if (*path == '/') state = 0;
634 if (*path == '/') return 1;
638 if (*path == '/') state = 0;
647 * restore directory information (timestamp, permission and uid/gid).
648 * added by A.Iriyama 2003.12.12
651 typedef struct LzHeaderList_t {
652 struct LzHeaderList_t *next;
656 static LzHeaderList *dirinfo;
658 static void add_dirinfo(char *name, LzHeader *hdr)
660 LzHeaderList *p, *tmp, top;
662 if (memcmp(hdr->method, LZHDIRS_METHOD, 5) != 0)
665 p = xmalloc(sizeof(LzHeaderList));
667 memcpy(&p->hdr, hdr, sizeof(LzHeader));
668 strncpy(p->hdr.name, name, sizeof(p->hdr.name));
669 p->hdr.name[sizeof(p->hdr.name)-1] = 0;
681 reverse sorted by pathname order
685 dirinfo->hdr.name = "a/b/d"
686 dirinfo->next->hdr.name = "a/b/c"
687 dirinfo->next->next->hdr.name = "a/b"
691 dirinfo->hdr.name = "a/b/d"
692 dirinfo->next->hdr.name = "a/b/c"
693 dirinfo->next->next->hdr.name = "a/b"
694 dirinfo->next->next->next->hdr.name = "a"
699 for (tmp = ⊤ tmp->next; tmp = tmp->next) {
700 if (strcmp(p->hdr.name, tmp->next->hdr.name) > 0) {
706 if (tmp->next == NULL) {
715 static void adjust_dirinfo()
718 /* message("adjusting [%s]", dirinfo->hdr.name); */
719 adjust_info(dirinfo->hdr.name, &dirinfo->hdr);
722 LzHeaderList *tmp = dirinfo;
723 dirinfo = dirinfo->next;
729 #if HAVE_LIBAPPLEFILE
731 decode_macbinary(ofp, size, outPath)
736 af_file_t *afp = NULL;
738 unsigned char *datap;
741 if ((afp = af_open(temporary_name)) != NULL) {
743 datap = af_data(afp, &dlen);
744 fwrite(datap, sizeof(unsigned char), dlen, ofp);
747 } else { /* it may be not encoded in MacBinary */
749 if ((ifp = fopen(temporary_name, READ_BINARY)) == NULL) {
750 error("Cannot open a temporary file \"%s\"", temporary_name);
753 copyfile(ifp, ofp, size, 0, 0);
760 #endif /* HAVE_LIBAPPLEFILE */