libarchive/test/test_pax_filename_encoding.c - third_party/libarchive - Git at Google

 /*-
  * Copyright (c) 2003-2007 Tim Kientzle
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "test.h"
 __FBSDID("$FreeBSD: src/lib/libarchive/test/test_pax_filename_encoding.c,v 1.3 2008/08/11 01:19:36 kientzle Exp $");

 #include <locale.h>

 /*
  * Pax interchange is supposed to encode filenames into
  * UTF-8.  Of course, that's not always possible.  This
  * test is intended to verify that filenames always get
  * stored and restored correctly, regardless of the encodings.
  */

 /*
  * Read a manually-created archive that has filenames that are
  * stored in binary instead of UTF-8 and verify that we get
  * the right filename returned and that we get a warning only
  * if the header isn't marked as binary.
  */
 static void test_pax_filename_encoding_1(void)
 {
 	static const char testname[] = "test_pax_filename_encoding.tar";
 	/*
 	 * \314\214 is a valid 2-byte UTF-8 sequence.
 	 * \374 is invalid in UTF-8.
 	 */
 	char filename[] = "abc\314\214mno\374xyz";
 	struct archive *a;
 	struct archive_entry *entry;

 	/*
 	 * Read an archive that has non-UTF8 pax filenames in it.
 	 */
 	extract_reference_file(testname);
 	a = archive_read_new();
 	assertEqualInt(ARCHIVE_OK, archive_read_support_format_tar(a));
 	assertEqualInt(ARCHIVE_OK, archive_read_support_compression_all(a));
 	assertEqualInt(ARCHIVE_OK,
 	    archive_read_open_filename(a, testname, 10240));
 	/*
 	 * First entry in this test archive has an invalid UTF-8 sequence
 	 * in it, but the header is not marked as hdrcharset=BINARY, so that
 	 * requires a warning.
 	 */
 	failure("Invalid UTF8 in a pax archive pathname should cause a warning");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualString(filename, archive_entry_pathname(entry));
 	/*
 	 * Second entry is identical except that it does have
 	 * hdrcharset=BINARY, so no warning should be generated.
 	 */
 	failure("A pathname with hdrcharset=BINARY can have invalid UTF8\n"
 	    " characters in it without generating a warning");
 	assertEqualInt(ARCHIVE_OK, archive_read_next_header(a, &entry));
 	assertEqualString(filename, archive_entry_pathname(entry));
 	archive_read_finish(a);
 }

 /*
  * Set the locale and write a pathname containing invalid characters.
  * This should work; the underlying implementation should automatically
  * fall back to storing the pathname in binary.
  */
 static void test_pax_filename_encoding_2(void)
 {
 	char filename[] = "abc\314\214mno\374xyz";
 	struct archive *a;
 	struct archive_entry *entry;
 	char buff[65536];
 	char longname[] = "abc\314\214mno\374xyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    "/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
 	    ;
 	size_t used;

 	/*
 	 * We need a starting locale which has invalid sequences.
 	 * de_DE.UTF-8 seems to be commonly supported.
 	 */
 	/* If it doesn't exist, just warn and return. */
 	if (NULL == setlocale(LC_ALL, LOCALE_DE)) {
 		skipping("invalid encoding tests require a suitable locale;"
 		    " %s not available on this system", LOCALE_DE);
 		return;
 	}

 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, 0, archive_write_set_format_pax(a));
 	assertEqualIntA(a, 0, archive_write_set_compression_none(a));
 	assertEqualIntA(a, 0, archive_write_set_bytes_per_block(a, 0));
 	assertEqualInt(0,
 	    archive_write_open_memory(a, buff, sizeof(buff), &used));

 	assert((entry = archive_entry_new()) != NULL);
 	/* Set pathname, gname, uname, hardlink to nonconvertible values. */
 	archive_entry_copy_pathname(entry, filename);
 	archive_entry_copy_gname(entry, filename);
 	archive_entry_copy_uname(entry, filename);
 	archive_entry_copy_hardlink(entry, filename);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	failure("This should generate a warning for nonconvertible names.");
 	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	/* Set path, gname, uname, and symlink to nonconvertible values. */
 	archive_entry_copy_pathname(entry, filename);
 	archive_entry_copy_gname(entry, filename);
 	archive_entry_copy_uname(entry, filename);
 	archive_entry_copy_symlink(entry, filename);
 	archive_entry_set_filetype(entry, AE_IFLNK);
 	failure("This should generate a warning for nonconvertible names.");
 	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	/* Set pathname to a very long nonconvertible value. */
 	archive_entry_copy_pathname(entry, longname);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	failure("This should generate a warning for nonconvertible names.");
 	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assertEqualInt(0, archive_write_close(a));
 #if ARCHIVE_VERSION_NUMBER < 2000000
 	archive_write_finish(a);
 #else
 	assertEqualInt(0, archive_write_finish(a));
 #endif

 	/*
 	 * Now read the entries back.
 	 */

 	assert((a = archive_read_new()) != NULL);
 	assertEqualInt(0, archive_read_support_format_tar(a));
 	assertEqualInt(0, archive_read_open_memory(a, buff, used));

 	assertEqualInt(0, archive_read_next_header(a, &entry));
 	assertEqualString(filename, archive_entry_pathname(entry));
 	assertEqualString(filename, archive_entry_gname(entry));
 	assertEqualString(filename, archive_entry_uname(entry));
 	assertEqualString(filename, archive_entry_hardlink(entry));

 	assertEqualInt(0, archive_read_next_header(a, &entry));
 	assertEqualString(filename, archive_entry_pathname(entry));
 	assertEqualString(filename, archive_entry_gname(entry));
 	assertEqualString(filename, archive_entry_uname(entry));
 	assertEqualString(filename, archive_entry_symlink(entry));

 	assertEqualInt(0, archive_read_next_header(a, &entry));
 	assertEqualString(longname, archive_entry_pathname(entry));

 	assertEqualInt(0, archive_read_close(a));
 #if ARCHIVE_VERSION_NUMBER < 2000000
 	archive_read_finish(a);
 #else
 	assertEqualInt(0, archive_read_finish(a));
 #endif
 }

 /*
  * Create an entry starting from a wide-character Unicode pathname,
  * read it back into "C" locale, which doesn't support the name.
  * TODO: Figure out the "right" behavior here.
  */
 static void test_pax_filename_encoding_3(void)
 {
 	wchar_t badname[] = L"xxxAyyyBzzz";
 	const char badname_utf8[] = "xxx\xE1\x88\xB4yyy\xE5\x99\xB8zzz";
 	struct archive *a;
 	struct archive_entry *entry;
 	char buff[65536];
 	size_t used;

 	badname[3] = 0x1234;
 	badname[7] = 0x5678;

 	/* If it doesn't exist, just warn and return. */
 	if (NULL == setlocale(LC_ALL, "C")) {
 		skipping("Can't set \"C\" locale, so can't exercise "
 		    "certain character-conversion failures");
 		return;
 	}

 	/* If wctomb is broken, warn and return. */
 	if (wctomb(buff, 0x1234) > 0) {
 		skipping("Cannot test conversion failures because \"C\" "
 		    "locale on this system has no invalid characters.");
 		return;
 	}

 	/* If wctomb is broken, warn and return. */
 	if (wctomb(buff, 0x1234) > 0) {
 		skipping("Cannot test conversion failures because \"C\" "
 		    "locale on this system has no invalid characters.");
 		return;
 	}

 	assert((a = archive_write_new()) != NULL);
 	assertEqualIntA(a, 0, archive_write_set_format_pax(a));
 	assertEqualIntA(a, 0, archive_write_set_compression_none(a));
 	assertEqualIntA(a, 0, archive_write_set_bytes_per_block(a, 0));
 	assertEqualInt(0,
 	    archive_write_open_memory(a, buff, sizeof(buff), &used));

 	assert((entry = archive_entry_new()) != NULL);
 	/* Set pathname to non-convertible wide value. */
 	archive_entry_copy_pathname_w(entry, badname);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	archive_entry_copy_pathname_w(entry, L"abc");
 	/* Set gname to non-convertible wide value. */
 	archive_entry_copy_gname_w(entry, badname);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	archive_entry_copy_pathname_w(entry, L"abc");
 	/* Set uname to non-convertible wide value. */
 	archive_entry_copy_uname_w(entry, badname);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	archive_entry_copy_pathname_w(entry, L"abc");
 	/* Set hardlink to non-convertible wide value. */
 	archive_entry_copy_hardlink_w(entry, badname);
 	archive_entry_set_filetype(entry, AE_IFREG);
 	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assert((entry = archive_entry_new()) != NULL);
 	archive_entry_copy_pathname_w(entry, L"abc");
 	/* Set symlink to non-convertible wide value. */
 	archive_entry_copy_symlink_w(entry, badname);
 	archive_entry_set_filetype(entry, AE_IFLNK);
 	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
 	archive_entry_free(entry);

 	assertEqualInt(0, archive_write_close(a));
 #if ARCHIVE_VERSION_NUMBER < 2000000
 	archive_write_finish(a);
 #else
 	assertEqualInt(0, archive_write_finish(a));
 #endif

 	/*
 	 * Now read the entries back.
 	 */

 	assert((a = archive_read_new()) != NULL);
 	assertEqualInt(0, archive_read_support_format_tar(a));
 	assertEqualInt(0, archive_read_open_memory(a, buff, used));

 	failure("A non-convertible pathname should cause a warning.");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualWString(badname, archive_entry_pathname_w(entry));
 	failure("If native locale can't convert, we should get UTF-8 back.");
 	assertEqualString(badname_utf8, archive_entry_pathname(entry));

 	failure("A non-convertible gname should cause a warning.");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualWString(badname, archive_entry_gname_w(entry));
 	failure("If native locale can't convert, we should get UTF-8 back.");
 	assertEqualString(badname_utf8, archive_entry_gname(entry));

 	failure("A non-convertible uname should cause a warning.");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualWString(badname, archive_entry_uname_w(entry));
 	failure("If native locale can't convert, we should get UTF-8 back.");
 	assertEqualString(badname_utf8, archive_entry_uname(entry));

 	failure("A non-convertible hardlink should cause a warning.");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualWString(badname, archive_entry_hardlink_w(entry));
 	failure("If native locale can't convert, we should get UTF-8 back.");
 	assertEqualString(badname_utf8, archive_entry_hardlink(entry));

 	failure("A non-convertible symlink should cause a warning.");
 	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
 	assertEqualWString(badname, archive_entry_symlink_w(entry));
 	assertEqualWString(NULL, archive_entry_hardlink_w(entry));
 	failure("If native locale can't convert, we should get UTF-8 back.");
 	assertEqualString(badname_utf8, archive_entry_symlink(entry));

 	assertEqualInt(ARCHIVE_EOF, archive_read_next_header(a, &entry));

 	assertEqualInt(0, archive_read_close(a));
 #if ARCHIVE_VERSION_NUMBER < 2000000
 	archive_read_finish(a);
 #else
 	assertEqualInt(0, archive_read_finish(a));
 #endif
 }

 DEFINE_TEST(test_pax_filename_encoding)
 {
 	test_pax_filename_encoding_1();
 	test_pax_filename_encoding_2();
 	test_pax_filename_encoding_3();
 }
	/*-
	* Copyright (c) 2003-2007 Tim Kientzle
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	#include "test.h"
	__FBSDID("$FreeBSD: src/lib/libarchive/test/test_pax_filename_encoding.c,v 1.3 2008/08/11 01:19:36 kientzle Exp $");

	#include <locale.h>

	/*
	* Pax interchange is supposed to encode filenames into
	* UTF-8. Of course, that's not always possible. This
	* test is intended to verify that filenames always get
	* stored and restored correctly, regardless of the encodings.
	*/

	/*
	* Read a manually-created archive that has filenames that are
	* stored in binary instead of UTF-8 and verify that we get
	* the right filename returned and that we get a warning only
	* if the header isn't marked as binary.
	*/
	static void test_pax_filename_encoding_1(void)
	{
	static const char testname[] = "test_pax_filename_encoding.tar";
	/*
	* \314\214 is a valid 2-byte UTF-8 sequence.
	* \374 is invalid in UTF-8.
	*/
	char filename[] = "abc\314\214mno\374xyz";
	struct archive *a;
	struct archive_entry *entry;

	/*
	* Read an archive that has non-UTF8 pax filenames in it.
	*/
	extract_reference_file(testname);
	a = archive_read_new();
	assertEqualInt(ARCHIVE_OK, archive_read_support_format_tar(a));
	assertEqualInt(ARCHIVE_OK, archive_read_support_compression_all(a));
	assertEqualInt(ARCHIVE_OK,
	archive_read_open_filename(a, testname, 10240));
	/*
	* First entry in this test archive has an invalid UTF-8 sequence
	* in it, but the header is not marked as hdrcharset=BINARY, so that
	* requires a warning.
	*/
	failure("Invalid UTF8 in a pax archive pathname should cause a warning");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualString(filename, archive_entry_pathname(entry));
	/*
	* Second entry is identical except that it does have
	* hdrcharset=BINARY, so no warning should be generated.
	*/
	failure("A pathname with hdrcharset=BINARY can have invalid UTF8\n"
	" characters in it without generating a warning");
	assertEqualInt(ARCHIVE_OK, archive_read_next_header(a, &entry));
	assertEqualString(filename, archive_entry_pathname(entry));
	archive_read_finish(a);
	}

	/*
	* Set the locale and write a pathname containing invalid characters.
	* This should work; the underlying implementation should automatically
	* fall back to storing the pathname in binary.
	*/
	static void test_pax_filename_encoding_2(void)
	{
	char filename[] = "abc\314\214mno\374xyz";
	struct archive *a;
	struct archive_entry *entry;
	char buff[65536];
	char longname[] = "abc\314\214mno\374xyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	"/abc\314\214mno\374xyz/abcdefghijklmnopqrstuvwxyz"
	;
	size_t used;

	/*
	* We need a starting locale which has invalid sequences.
	* de_DE.UTF-8 seems to be commonly supported.
	*/
	/* If it doesn't exist, just warn and return. */
	if (NULL == setlocale(LC_ALL, LOCALE_DE)) {
	skipping("invalid encoding tests require a suitable locale;"
	" %s not available on this system", LOCALE_DE);
	return;
	}

	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, 0, archive_write_set_format_pax(a));
	assertEqualIntA(a, 0, archive_write_set_compression_none(a));
	assertEqualIntA(a, 0, archive_write_set_bytes_per_block(a, 0));
	assertEqualInt(0,
	archive_write_open_memory(a, buff, sizeof(buff), &used));

	assert((entry = archive_entry_new()) != NULL);
	/* Set pathname, gname, uname, hardlink to nonconvertible values. */
	archive_entry_copy_pathname(entry, filename);
	archive_entry_copy_gname(entry, filename);
	archive_entry_copy_uname(entry, filename);
	archive_entry_copy_hardlink(entry, filename);
	archive_entry_set_filetype(entry, AE_IFREG);
	failure("This should generate a warning for nonconvertible names.");
	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	/* Set path, gname, uname, and symlink to nonconvertible values. */
	archive_entry_copy_pathname(entry, filename);
	archive_entry_copy_gname(entry, filename);
	archive_entry_copy_uname(entry, filename);
	archive_entry_copy_symlink(entry, filename);
	archive_entry_set_filetype(entry, AE_IFLNK);
	failure("This should generate a warning for nonconvertible names.");
	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	/* Set pathname to a very long nonconvertible value. */
	archive_entry_copy_pathname(entry, longname);
	archive_entry_set_filetype(entry, AE_IFREG);
	failure("This should generate a warning for nonconvertible names.");
	assertEqualInt(ARCHIVE_WARN, archive_write_header(a, entry));
	archive_entry_free(entry);

	assertEqualInt(0, archive_write_close(a));
	#if ARCHIVE_VERSION_NUMBER < 2000000
	archive_write_finish(a);
	#else
	assertEqualInt(0, archive_write_finish(a));
	#endif

	/*
	* Now read the entries back.
	*/

	assert((a = archive_read_new()) != NULL);
	assertEqualInt(0, archive_read_support_format_tar(a));
	assertEqualInt(0, archive_read_open_memory(a, buff, used));

	assertEqualInt(0, archive_read_next_header(a, &entry));
	assertEqualString(filename, archive_entry_pathname(entry));
	assertEqualString(filename, archive_entry_gname(entry));
	assertEqualString(filename, archive_entry_uname(entry));
	assertEqualString(filename, archive_entry_hardlink(entry));

	assertEqualInt(0, archive_read_next_header(a, &entry));
	assertEqualString(filename, archive_entry_pathname(entry));
	assertEqualString(filename, archive_entry_gname(entry));
	assertEqualString(filename, archive_entry_uname(entry));
	assertEqualString(filename, archive_entry_symlink(entry));

	assertEqualInt(0, archive_read_next_header(a, &entry));
	assertEqualString(longname, archive_entry_pathname(entry));

	assertEqualInt(0, archive_read_close(a));
	#if ARCHIVE_VERSION_NUMBER < 2000000
	archive_read_finish(a);
	#else
	assertEqualInt(0, archive_read_finish(a));
	#endif
	}

	/*
	* Create an entry starting from a wide-character Unicode pathname,
	* read it back into "C" locale, which doesn't support the name.
	* TODO: Figure out the "right" behavior here.
	*/
	static void test_pax_filename_encoding_3(void)
	{
	wchar_t badname[] = L"xxxAyyyBzzz";
	const char badname_utf8[] = "xxx\xE1\x88\xB4yyy\xE5\x99\xB8zzz";
	struct archive *a;
	struct archive_entry *entry;
	char buff[65536];
	size_t used;

	badname[3] = 0x1234;
	badname[7] = 0x5678;

	/* If it doesn't exist, just warn and return. */
	if (NULL == setlocale(LC_ALL, "C")) {
	skipping("Can't set \"C\" locale, so can't exercise "
	"certain character-conversion failures");
	return;
	}

	/* If wctomb is broken, warn and return. */
	if (wctomb(buff, 0x1234) > 0) {
	skipping("Cannot test conversion failures because \"C\" "
	"locale on this system has no invalid characters.");
	return;
	}

	/* If wctomb is broken, warn and return. */
	if (wctomb(buff, 0x1234) > 0) {
	skipping("Cannot test conversion failures because \"C\" "
	"locale on this system has no invalid characters.");
	return;
	}

	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, 0, archive_write_set_format_pax(a));
	assertEqualIntA(a, 0, archive_write_set_compression_none(a));
	assertEqualIntA(a, 0, archive_write_set_bytes_per_block(a, 0));
	assertEqualInt(0,
	archive_write_open_memory(a, buff, sizeof(buff), &used));

	assert((entry = archive_entry_new()) != NULL);
	/* Set pathname to non-convertible wide value. */
	archive_entry_copy_pathname_w(entry, badname);
	archive_entry_set_filetype(entry, AE_IFREG);
	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	archive_entry_copy_pathname_w(entry, L"abc");
	/* Set gname to non-convertible wide value. */
	archive_entry_copy_gname_w(entry, badname);
	archive_entry_set_filetype(entry, AE_IFREG);
	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	archive_entry_copy_pathname_w(entry, L"abc");
	/* Set uname to non-convertible wide value. */
	archive_entry_copy_uname_w(entry, badname);
	archive_entry_set_filetype(entry, AE_IFREG);
	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	archive_entry_copy_pathname_w(entry, L"abc");
	/* Set hardlink to non-convertible wide value. */
	archive_entry_copy_hardlink_w(entry, badname);
	archive_entry_set_filetype(entry, AE_IFREG);
	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
	archive_entry_free(entry);

	assert((entry = archive_entry_new()) != NULL);
	archive_entry_copy_pathname_w(entry, L"abc");
	/* Set symlink to non-convertible wide value. */
	archive_entry_copy_symlink_w(entry, badname);
	archive_entry_set_filetype(entry, AE_IFLNK);
	assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry));
	archive_entry_free(entry);

	assertEqualInt(0, archive_write_close(a));
	#if ARCHIVE_VERSION_NUMBER < 2000000
	archive_write_finish(a);
	#else
	assertEqualInt(0, archive_write_finish(a));
	#endif

	/*
	* Now read the entries back.
	*/

	assert((a = archive_read_new()) != NULL);
	assertEqualInt(0, archive_read_support_format_tar(a));
	assertEqualInt(0, archive_read_open_memory(a, buff, used));

	failure("A non-convertible pathname should cause a warning.");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualWString(badname, archive_entry_pathname_w(entry));
	failure("If native locale can't convert, we should get UTF-8 back.");
	assertEqualString(badname_utf8, archive_entry_pathname(entry));

	failure("A non-convertible gname should cause a warning.");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualWString(badname, archive_entry_gname_w(entry));
	failure("If native locale can't convert, we should get UTF-8 back.");
	assertEqualString(badname_utf8, archive_entry_gname(entry));

	failure("A non-convertible uname should cause a warning.");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualWString(badname, archive_entry_uname_w(entry));
	failure("If native locale can't convert, we should get UTF-8 back.");
	assertEqualString(badname_utf8, archive_entry_uname(entry));

	failure("A non-convertible hardlink should cause a warning.");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualWString(badname, archive_entry_hardlink_w(entry));
	failure("If native locale can't convert, we should get UTF-8 back.");
	assertEqualString(badname_utf8, archive_entry_hardlink(entry));

	failure("A non-convertible symlink should cause a warning.");
	assertEqualInt(ARCHIVE_WARN, archive_read_next_header(a, &entry));
	assertEqualWString(badname, archive_entry_symlink_w(entry));
	assertEqualWString(NULL, archive_entry_hardlink_w(entry));
	failure("If native locale can't convert, we should get UTF-8 back.");
	assertEqualString(badname_utf8, archive_entry_symlink(entry));

	assertEqualInt(ARCHIVE_EOF, archive_read_next_header(a, &entry));

	assertEqualInt(0, archive_read_close(a));
	#if ARCHIVE_VERSION_NUMBER < 2000000
	archive_read_finish(a);
	#else
	assertEqualInt(0, archive_read_finish(a));
	#endif
	}

	DEFINE_TEST(test_pax_filename_encoding)
	{
	test_pax_filename_encoding_1();
	test_pax_filename_encoding_2();
	test_pax_filename_encoding_3();
	}