2 * Copyright (c) 2009-2012,2014 Michihiro NAKAJIMA
3 * Copyright (c) 2003-2007 Tim Kientzle
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include "archive_platform.h"
28 __FBSDID("$FreeBSD$");
30 #ifdef HAVE_SYS_TYPES_H
31 #include <sys/types.h>
45 #if defined(HAVE_WINCRYPT_H) && !defined(__CYGWIN__)
62 #include "archive_private.h"
63 #include "archive_random_private.h"
64 #include "archive_string.h"
70 static int archive_utility_string_sort_helper(char **, unsigned int);
72 /* Generic initialization of 'struct archive' objects. */
74 __archive_clean(struct archive *a)
76 archive_string_conversion_free(a);
81 archive_version_number(void)
83 return (ARCHIVE_VERSION_NUMBER);
87 archive_version_string(void)
89 return (ARCHIVE_VERSION_STRING);
93 archive_errno(struct archive *a)
95 return (a->archive_error_number);
99 archive_error_string(struct archive *a)
102 if (a->error != NULL && *a->error != '\0')
109 archive_file_count(struct archive *a)
111 return (a->file_count);
115 archive_format(struct archive *a)
117 return (a->archive_format);
121 archive_format_name(struct archive *a)
123 return (a->archive_format_name);
128 archive_compression(struct archive *a)
130 return archive_filter_code(a, 0);
134 archive_compression_name(struct archive *a)
136 return archive_filter_name(a, 0);
141 * Return a count of the number of compressed bytes processed.
144 archive_position_compressed(struct archive *a)
146 return archive_filter_bytes(a, -1);
150 * Return a count of the number of uncompressed bytes processed.
153 archive_position_uncompressed(struct archive *a)
155 return archive_filter_bytes(a, 0);
159 archive_clear_error(struct archive *a)
161 archive_string_empty(&a->error_string);
163 a->archive_error_number = 0;
167 archive_set_error(struct archive *a, int error_number, const char *fmt, ...)
171 a->archive_error_number = error_number;
177 archive_string_empty(&(a->error_string));
179 archive_string_vsprintf(&(a->error_string), fmt, ap);
181 a->error = a->error_string.s;
185 archive_copy_error(struct archive *dest, struct archive *src)
187 dest->archive_error_number = src->archive_error_number;
189 archive_string_copy(&dest->error_string, &src->error_string);
190 dest->error = dest->error_string.s;
194 __archive_errx(int retvalue, const char *msg)
196 static const char msg1[] = "Fatal Internal Error in libarchive: ";
199 s = write(2, msg1, strlen(msg1));
200 (void)s; /* UNUSED */
201 s = write(2, msg, strlen(msg));
202 (void)s; /* UNUSED */
203 s = write(2, "\n", 1);
204 (void)s; /* UNUSED */
209 * Create a temporary file
211 #if defined(_WIN32) && !defined(__CYGWIN__)
214 * Do not use Windows tmpfile() function.
215 * It will make a temporary file under the root directory
216 * and it'll cause permission error if a user who is
217 * non-Administrator creates temporary files.
218 * Also Windows version of mktemp family including _mktemp_s
222 __archive_mktempx(const char *tmpdir, wchar_t *template)
224 static const wchar_t prefix[] = L"libarchive_";
225 static const wchar_t suffix[] = L"XXXXXXXXXX";
226 static const wchar_t num[] = {
227 L'0', L'1', L'2', L'3', L'4', L'5', L'6', L'7',
228 L'8', L'9', L'A', L'B', L'C', L'D', L'E', L'F',
229 L'G', L'H', L'I', L'J', L'K', L'L', L'M', L'N',
230 L'O', L'P', L'Q', L'R', L'S', L'T', L'U', L'V',
231 L'W', L'X', L'Y', L'Z', L'a', L'b', L'c', L'd',
232 L'e', L'f', L'g', L'h', L'i', L'j', L'k', L'l',
233 L'm', L'n', L'o', L'p', L'q', L'r', L's', L't',
234 L'u', L'v', L'w', L'x', L'y', L'z'
237 struct archive_wstring temp_name;
243 hProv = (HCRYPTPROV)NULL;
247 if (template == NULL) {
248 archive_string_init(&temp_name);
250 /* Get a temporary directory. */
251 if (tmpdir == NULL) {
255 l = GetTempPathW(0, NULL);
257 la_dosmaperr(GetLastError());
260 tmp = malloc(l*sizeof(wchar_t));
265 GetTempPathW((DWORD)l, tmp);
266 archive_wstrcpy(&temp_name, tmp);
269 if (archive_wstring_append_from_mbs(&temp_name, tmpdir,
272 if (temp_name.s[temp_name.length-1] != L'/')
273 archive_wstrappend_wchar(&temp_name, L'/');
276 /* Check if temp_name is a directory. */
277 attr = GetFileAttributesW(temp_name.s);
278 if (attr == (DWORD)-1) {
279 if (GetLastError() != ERROR_FILE_NOT_FOUND) {
280 la_dosmaperr(GetLastError());
283 ws = __la_win_permissive_name_w(temp_name.s);
288 attr = GetFileAttributesW(ws);
289 if (attr == (DWORD)-1) {
290 la_dosmaperr(GetLastError());
294 if (!(attr & FILE_ATTRIBUTE_DIRECTORY)) {
300 * Create a temporary file.
302 archive_wstrcat(&temp_name, prefix);
303 archive_wstrcat(&temp_name, suffix);
304 ep = temp_name.s + archive_strlen(&temp_name);
305 xp = ep - wcslen(suffix);
306 template = temp_name.s;
308 xp = wcschr(template, L'X');
309 if (xp == NULL) /* No X, programming error */
311 for (ep = xp; *ep == L'X'; ep++)
313 if (*ep) /* X followed by non X, programming error */
317 if (!CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL,
318 CRYPT_VERIFYCONTEXT)) {
319 la_dosmaperr(GetLastError());
327 /* Generate a random file name through CryptGenRandom(). */
329 if (!CryptGenRandom(hProv, (DWORD)(ep - p)*sizeof(wchar_t),
331 la_dosmaperr(GetLastError());
335 *p = num[((DWORD)*p) % (sizeof(num)/sizeof(num[0]))];
338 ws = __la_win_permissive_name_w(template);
343 if (template == temp_name.s) {
344 attr = FILE_ATTRIBUTE_TEMPORARY |
345 FILE_FLAG_DELETE_ON_CLOSE;
348 attr = FILE_ATTRIBUTE_NORMAL;
351 GENERIC_READ | GENERIC_WRITE | DELETE,
354 CREATE_NEW,/* Create a new file only */
357 if (h == INVALID_HANDLE_VALUE) {
358 /* The same file already exists. retry with
360 if (GetLastError() == ERROR_FILE_EXISTS)
362 /* Otherwise, fail creation temporary file. */
363 la_dosmaperr(GetLastError());
366 fd = _open_osfhandle((intptr_t)h, _O_BINARY | _O_RDWR);
368 la_dosmaperr(GetLastError());
375 if (hProv != (HCRYPTPROV)NULL)
376 CryptReleaseContext(hProv, 0);
378 if (template == temp_name.s)
379 archive_wstring_free(&temp_name);
384 __archive_mktemp(const char *tmpdir)
386 return __archive_mktempx(tmpdir, NULL);
390 __archive_mkstemp(wchar_t *template)
392 return __archive_mktempx(NULL, template);
398 get_tempdir(struct archive_string *temppath)
402 tmp = getenv("TMPDIR");
409 archive_strcpy(temppath, tmp);
410 if (temppath->s[temppath->length-1] != '/')
411 archive_strappend_char(temppath, '/');
415 #if defined(HAVE_MKSTEMP)
418 * We can use mkstemp().
422 __archive_mktemp(const char *tmpdir)
424 struct archive_string temp_name;
427 archive_string_init(&temp_name);
428 if (tmpdir == NULL) {
429 if (get_tempdir(&temp_name) != ARCHIVE_OK)
432 archive_strcpy(&temp_name, tmpdir);
433 if (temp_name.s[temp_name.length-1] != '/')
434 archive_strappend_char(&temp_name, '/');
436 archive_strcat(&temp_name, "libarchive_XXXXXX");
437 fd = mkstemp(temp_name.s);
440 __archive_ensure_cloexec_flag(fd);
443 archive_string_free(&temp_name);
448 __archive_mkstemp(char *template)
451 fd = mkstemp(template);
453 __archive_ensure_cloexec_flag(fd);
457 #else /* !HAVE_MKSTEMP */
460 * We use a private routine.
464 __archive_mktempx(const char *tmpdir, char *template)
466 static const char num[] = {
467 '0', '1', '2', '3', '4', '5', '6', '7',
468 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
469 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
470 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
471 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
472 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
473 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
474 'u', 'v', 'w', 'x', 'y', 'z'
476 struct archive_string temp_name;
482 if (template == NULL) {
483 archive_string_init(&temp_name);
484 if (tmpdir == NULL) {
485 if (get_tempdir(&temp_name) != ARCHIVE_OK)
488 archive_strcpy(&temp_name, tmpdir);
489 if (temp_name.s[temp_name.length-1] == '/') {
490 temp_name.s[temp_name.length-1] = '\0';
493 if (la_stat(temp_name.s, &st) < 0)
495 if (!S_ISDIR(st.st_mode)) {
499 archive_strcat(&temp_name, "/libarchive_");
500 tp = temp_name.s + archive_strlen(&temp_name);
501 archive_strcat(&temp_name, "XXXXXXXXXX");
502 ep = temp_name.s + archive_strlen(&temp_name);
503 template = temp_name.s;
505 tp = strchr(template, 'X');
506 if (tp == NULL) /* No X, programming error */
508 for (ep = tp; *ep == 'X'; ep++)
510 if (*ep) /* X followed by non X, programming error */
518 archive_random(p, ep - p);
520 int d = *((unsigned char *)p) % sizeof(num);
523 fd = open(template, O_CREAT | O_EXCL | O_RDWR | O_CLOEXEC,
525 } while (fd < 0 && errno == EEXIST);
528 __archive_ensure_cloexec_flag(fd);
529 if (template == temp_name.s)
532 if (template == temp_name.s)
533 archive_string_free(&temp_name);
538 __archive_mktemp(const char *tmpdir)
540 return __archive_mktempx(tmpdir, NULL);
544 __archive_mkstemp(char *template)
546 return __archive_mktempx(NULL, template);
549 #endif /* !HAVE_MKSTEMP */
550 #endif /* !_WIN32 || __CYGWIN__ */
553 * Set FD_CLOEXEC flag to a file descriptor if it is not set.
554 * We have to set the flag if the platform does not provide O_CLOEXEC
555 * or F_DUPFD_CLOEXEC flags.
557 * Note: This function is absolutely called after creating a new file
558 * descriptor even if the platform seemingly provides O_CLOEXEC or
559 * F_DUPFD_CLOEXEC macros because it is possible that the platform
560 * merely declares those macros, especially Linux 2.6.18 - 2.6.24 do it.
563 __archive_ensure_cloexec_flag(int fd)
565 #if defined(_WIN32) && !defined(__CYGWIN__)
566 (void)fd; /* UNUSED */
571 flags = fcntl(fd, F_GETFD);
572 if (flags != -1 && (flags & FD_CLOEXEC) == 0)
573 fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
579 * Utility function to sort a group of strings using quicksort.
582 archive_utility_string_sort_helper(char **strings, unsigned int n)
584 unsigned int i, lesser_count, greater_count;
585 char **lesser, **greater, **tmp, *pivot;
586 int retval1, retval2;
588 /* A list of 0 or 1 elements is already sorted */
592 lesser_count = greater_count = 0;
593 lesser = greater = NULL;
595 for (i = 1; i < n; i++)
597 if (strcmp(strings[i], pivot) < 0)
600 tmp = (char **)realloc(lesser,
601 lesser_count * sizeof(char *));
605 return (ARCHIVE_FATAL);
608 lesser[lesser_count - 1] = strings[i];
613 tmp = (char **)realloc(greater,
614 greater_count * sizeof(char *));
618 return (ARCHIVE_FATAL);
621 greater[greater_count - 1] = strings[i];
625 /* quicksort(lesser) */
626 retval1 = archive_utility_string_sort_helper(lesser, lesser_count);
627 for (i = 0; i < lesser_count; i++)
628 strings[i] = lesser[i];
632 strings[lesser_count] = pivot;
634 /* quicksort(greater) */
635 retval2 = archive_utility_string_sort_helper(greater, greater_count);
636 for (i = 0; i < greater_count; i++)
637 strings[lesser_count + 1 + i] = greater[i];
640 return (retval1 < retval2) ? retval1 : retval2;
644 archive_utility_string_sort(char **strings)
646 unsigned int size = 0;
647 while (strings[size] != NULL)
649 return archive_utility_string_sort_helper(strings, size);