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);
374 if (hProv != (HCRYPTPROV)NULL)
375 CryptReleaseContext(hProv, 0);
377 if (template == temp_name.s)
378 archive_wstring_free(&temp_name);
383 __archive_mktemp(const char *tmpdir)
385 return __archive_mktempx(tmpdir, NULL);
389 __archive_mkstemp(wchar_t *template)
391 return __archive_mktempx(NULL, template);
397 get_tempdir(struct archive_string *temppath)
401 tmp = getenv("TMPDIR");
408 archive_strcpy(temppath, tmp);
409 if (temppath->s[temppath->length-1] != '/')
410 archive_strappend_char(temppath, '/');
414 #if defined(HAVE_MKSTEMP)
417 * We can use mkstemp().
421 __archive_mktemp(const char *tmpdir)
423 struct archive_string temp_name;
426 archive_string_init(&temp_name);
427 if (tmpdir == NULL) {
428 if (get_tempdir(&temp_name) != ARCHIVE_OK)
431 archive_strcpy(&temp_name, tmpdir);
432 if (temp_name.s[temp_name.length-1] != '/')
433 archive_strappend_char(&temp_name, '/');
435 archive_strcat(&temp_name, "libarchive_XXXXXX");
436 fd = mkstemp(temp_name.s);
439 __archive_ensure_cloexec_flag(fd);
442 archive_string_free(&temp_name);
447 __archive_mkstemp(char *template)
450 fd = mkstemp(template);
452 __archive_ensure_cloexec_flag(fd);
456 #else /* !HAVE_MKSTEMP */
459 * We use a private routine.
463 __archive_mktempx(const char *tmpdir, char *template)
465 static const char num[] = {
466 '0', '1', '2', '3', '4', '5', '6', '7',
467 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
468 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
469 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
470 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
471 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
472 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
473 'u', 'v', 'w', 'x', 'y', 'z'
475 struct archive_string temp_name;
481 if (template == NULL) {
482 archive_string_init(&temp_name);
483 if (tmpdir == NULL) {
484 if (get_tempdir(&temp_name) != ARCHIVE_OK)
487 archive_strcpy(&temp_name, tmpdir);
488 if (temp_name.s[temp_name.length-1] == '/') {
489 temp_name.s[temp_name.length-1] = '\0';
492 if (la_stat(temp_name.s, &st) < 0)
494 if (!S_ISDIR(st.st_mode)) {
498 archive_strcat(&temp_name, "/libarchive_");
499 tp = temp_name.s + archive_strlen(&temp_name);
500 archive_strcat(&temp_name, "XXXXXXXXXX");
501 ep = temp_name.s + archive_strlen(&temp_name);
502 template = temp_name.s;
504 tp = strchr(template, 'X');
505 if (tp == NULL) /* No X, programming error */
507 for (ep = tp; *ep == 'X'; ep++)
509 if (*ep) /* X followed by non X, programming error */
517 archive_random(p, ep - p);
519 int d = *((unsigned char *)p) % sizeof(num);
522 fd = open(template, O_CREAT | O_EXCL | O_RDWR | O_CLOEXEC,
524 } while (fd < 0 && errno == EEXIST);
527 __archive_ensure_cloexec_flag(fd);
528 if (template == temp_name.s)
531 if (template == temp_name.s)
532 archive_string_free(&temp_name);
537 __archive_mktemp(const char *tmpdir)
539 return __archive_mktempx(tmpdir, NULL);
543 __archive_mkstemp(char *template)
545 return __archive_mktempx(NULL, template);
548 #endif /* !HAVE_MKSTEMP */
549 #endif /* !_WIN32 || __CYGWIN__ */
552 * Set FD_CLOEXEC flag to a file descriptor if it is not set.
553 * We have to set the flag if the platform does not provide O_CLOEXEC
554 * or F_DUPFD_CLOEXEC flags.
556 * Note: This function is absolutely called after creating a new file
557 * descriptor even if the platform seemingly provides O_CLOEXEC or
558 * F_DUPFD_CLOEXEC macros because it is possible that the platform
559 * merely declares those macros, especially Linux 2.6.18 - 2.6.24 do it.
562 __archive_ensure_cloexec_flag(int fd)
564 #if defined(_WIN32) && !defined(__CYGWIN__)
565 (void)fd; /* UNUSED */
570 flags = fcntl(fd, F_GETFD);
571 if (flags != -1 && (flags & FD_CLOEXEC) == 0)
572 fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
578 * Utility function to sort a group of strings using quicksort.
581 archive_utility_string_sort_helper(char **strings, unsigned int n)
583 unsigned int i, lesser_count, greater_count;
584 char **lesser, **greater, **tmp, *pivot;
585 int retval1, retval2;
587 /* A list of 0 or 1 elements is already sorted */
591 lesser_count = greater_count = 0;
592 lesser = greater = NULL;
594 for (i = 1; i < n; i++)
596 if (strcmp(strings[i], pivot) < 0)
599 tmp = (char **)realloc(lesser,
600 lesser_count * sizeof(char *));
604 return (ARCHIVE_FATAL);
607 lesser[lesser_count - 1] = strings[i];
612 tmp = (char **)realloc(greater,
613 greater_count * sizeof(char *));
617 return (ARCHIVE_FATAL);
620 greater[greater_count - 1] = strings[i];
624 /* quicksort(lesser) */
625 retval1 = archive_utility_string_sort_helper(lesser, lesser_count);
626 for (i = 0; i < lesser_count; i++)
627 strings[i] = lesser[i];
631 strings[lesser_count] = pivot;
633 /* quicksort(greater) */
634 retval2 = archive_utility_string_sort_helper(greater, greater_count);
635 for (i = 0; i < greater_count; i++)
636 strings[lesser_count + 1 + i] = greater[i];
639 return (retval1 < retval2) ? retval1 : retval2;
643 archive_utility_string_sort(char **strings)
645 unsigned int size = 0;
646 while (strings[size] != NULL)
648 return archive_utility_string_sort_helper(strings, size);