1/*-
2 * Copyright (c) 2003-2007 Tim Kientzle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25#include "test.h"
26__FBSDID("$FreeBSD$");
27
28static unsigned char nulls[1000];
29static unsigned char tmp[1000];
30static unsigned char  buff[10000];
31size_t data_sizes[] = {0, 5, 511, 512, 513};
32
33static void verify_read_positions(struct archive *a);
34
35static void
36verify_read_positions(struct archive *a)
37{
38	struct archive_entry *ae;
39	intmax_t read_position = 0;
40	size_t j;
41
42	/* Initial header position is zero. */
43	assert(read_position == (intmax_t)archive_read_header_position(a));
44	for (j = 0; j < sizeof(data_sizes)/sizeof(data_sizes[0]); ++j) {
45		assertA(0 == archive_read_next_header(a, &ae));
46		assertEqualInt(read_position,
47		    (intmax_t)archive_read_header_position(a));
48		/* Every other entry: read, then skip */
49		if (j & 1)
50			assertEqualInt(1,
51			    archive_read_data(a, tmp, 1));
52		assertA(0 == archive_read_data_skip(a));
53		/* read_data_skip() doesn't change header_position */
54		assertEqualInt(read_position,
55		    (intmax_t)archive_read_header_position(a));
56
57		read_position += 512; /* Size of header. */
58		read_position += (data_sizes[j] + 511) & ~511;
59	}
60
61	assertA(1 == archive_read_next_header(a, &ae));
62	assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
63	assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
64	assertEqualInt(read_position, (intmax_t)archive_read_header_position(a));
65}
66
67/* Check that header_position tracks correctly on read. */
68DEFINE_TEST(test_read_position)
69{
70	struct archive *a;
71	struct archive_entry *ae;
72	size_t write_pos;
73	size_t i;
74
75	/* Sanity test */
76	assert(sizeof(nulls) + 512 + 1024 <= sizeof(buff));
77
78	/* Create an archive. */
79	assert(NULL != (a = archive_write_new()));
80	assertA(0 == archive_write_set_format_pax_restricted(a));
81	assertA(0 == archive_write_set_bytes_per_block(a, 512));
82	assertA(0 == archive_write_open_memory(a, buff, sizeof(buff), &write_pos));
83
84	for (i = 0; i < sizeof(data_sizes)/sizeof(data_sizes[0]); ++i) {
85		/* Create a simple archive_entry. */
86		assert((ae = archive_entry_new()) != NULL);
87		archive_entry_set_pathname(ae, "testfile");
88		archive_entry_set_mode(ae, S_IFREG);
89		archive_entry_set_size(ae, data_sizes[i]);
90		assertA(0 == archive_write_header(a, ae));
91		archive_entry_free(ae);
92		assertA(data_sizes[i]
93		    == (size_t)archive_write_data(a, nulls, sizeof(nulls)));
94	}
95	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
96	assertEqualInt(ARCHIVE_OK, archive_write_free(a));
97
98	/* Read the archive back with a skip function. */
99	assert(NULL != (a = archive_read_new()));
100	assertA(0 == archive_read_support_format_tar(a));
101	assertA(0 == read_open_memory(a, buff, sizeof(buff), 512));
102	verify_read_positions(a);
103	archive_read_free(a);
104
105	/* Read the archive back without a skip function. */
106	assert(NULL != (a = archive_read_new()));
107	assertA(0 == archive_read_support_format_tar(a));
108	assertA(0 == read_open_memory_minimal(a, buff, sizeof(buff), 512));
109	verify_read_positions(a);
110	archive_read_free(a);
111
112}
113