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/*-
* 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: head/lib/libarchive/test/test_read_position.c 189389 2009-03-05 02:19:42Z kientzle $");
static unsigned char nulls[1000];
static unsigned char tmp[1000];
static unsigned char buff[10000];
size_t data_sizes[] = {0, 5, 511, 512, 513};
static void verify_read_positions(struct archive *a);
static void
verify_read_positions(struct archive *a)
{
struct archive_entry *ae;
intmax_t read_position = 0;
size_t j;
/* Initial header position is zero. */
assert(read_position == (intmax_t)archive_read_header_position(a));
for (j = 0; j < sizeof(data_sizes)/sizeof(data_sizes[0]); ++j) {
assertA(0 == archive_read_next_header(a, &ae));
assertEqualInt(read_position,
(intmax_t)archive_read_header_position(a));
/* Every other entry: read, then skip */
if (j & 1)
assertEqualInt(1,
archive_read_data(a, tmp, 1));
assertA(0 == archive_read_data_skip(a));
/* read_data_skip() doesn't change header_position */
assertEqualInt(read_position,
(intmax_t)archive_read_header_position(a));
read_position += 512; /* Size of header. */
read_position += (data_sizes[j] + 511) & ~511;
}
assertA(1 == archive_read_next_header(a, &ae));
assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
}
/* Check that header_position tracks correctly on read. */
DEFINE_TEST(test_read_position)
{
struct archive *a;
struct archive_entry *ae;
size_t write_pos;
size_t i;
/* Sanity test */
assert(sizeof(nulls) + 512 + 1024 <= sizeof(buff));
/* Create an archive. */
assert(NULL != (a = archive_write_new()));
assertA(0 == archive_write_set_format_pax_restricted(a));
assertA(0 == archive_write_set_bytes_per_block(a, 512));
assertA(0 == archive_write_open_memory(a, buff, sizeof(buff), &write_pos));
for (i = 0; i < sizeof(data_sizes)/sizeof(data_sizes[0]); ++i) {
/* Create a simple archive_entry. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_set_pathname(ae, "testfile");
archive_entry_set_mode(ae, S_IFREG);
archive_entry_set_size(ae, data_sizes[i]);
assertA(0 == archive_write_header(a, ae));
archive_entry_free(ae);
assertA(data_sizes[i]
== (size_t)archive_write_data(a, nulls, sizeof(nulls)));
}
assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
assertEqualInt(ARCHIVE_OK, archive_write_free(a));
/* Read the archive back with a skip function. */
assert(NULL != (a = archive_read_new()));
assertA(0 == archive_read_support_format_tar(a));
assertA(0 == read_open_memory(a, buff, sizeof(buff), 512));
verify_read_positions(a);
archive_read_free(a);
/* Read the archive back without a skip function. */
assert(NULL != (a = archive_read_new()));
assertA(0 == archive_read_support_format_tar(a));
assertA(0 == read_open_memory_minimal(a, buff, sizeof(buff), 512));
verify_read_positions(a);
archive_read_free(a);
}
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