/*-
 * Copyright (c) 2007-2010 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
 *    in this position and unchanged.
 * 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"

/*
 * Check that we generate an error message when reading a truncated
 * gzip, bzip2, compress, xz, lzma, or lzip file.
 */

static void
test_truncation(const char *compression,
    int (*set_compression)(struct archive *), int can_prog)
{
	struct archive_entry *ae;
	struct archive* a;
	char path[16];
	char *buff, *data;
	size_t buffsize, datasize, used1;
	int i, r, use_prog;

	buffsize = 2000000;
	assert(NULL != (buff = malloc(buffsize)));
	if (buff == NULL)
		return;

	datasize = 10000;
	assert(NULL != (data = malloc(datasize)));
	if (data == NULL) {
		free(buff);
		return;
	}
	memset(data, 0, datasize);

	/*
	 * Write a bunch of files with semi-random data.
	 */
	assert((a = archive_write_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_ustar(a));
	assertEqualIntA(a, ARCHIVE_OK,
	    archive_write_add_filter_compress(a));
	r = (*set_compression)(a);
	if (r != ARCHIVE_OK && !can_prog) {
		skipping("%s writing not supported on this platform",
		    compression);
		assertEqualInt(ARCHIVE_OK, archive_write_free(a));
		free(buff);
		free(data);
		return;
	}
	use_prog = (r == ARCHIVE_WARN && can_prog);
	assertEqualIntA(a, ARCHIVE_OK,
	    archive_write_set_bytes_per_block(a, 10));
	assertEqualIntA(a, ARCHIVE_OK,
	    archive_write_open_memory(a, buff, buffsize, &used1));
	assert((ae = archive_entry_new()) != NULL);
	archive_entry_set_filetype(ae, AE_IFREG);
	archive_entry_set_size(ae, datasize);
	for (i = 0; i < 100; i++) {
		snprintf(path, sizeof(path), "%s%d", compression, i);
		archive_entry_copy_pathname(ae, path);
		failure("%s", path);
		if (!assertEqualIntA(a, ARCHIVE_OK,
		    archive_write_header(a, ae))) {
			archive_write_free(a);
			free(data);
			free(buff);
			return;
		}
		fill_with_pseudorandom_data(data, datasize);
		failure("%s", path);
		if (!assertEqualIntA(a, datasize,
		    archive_write_data(a, data, datasize))) {
			archive_write_free(a);
			free(data);
			free(buff);
			return;
		}
	}
	archive_entry_free(ae);
	assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
	assertEqualInt(ARCHIVE_OK, archive_write_free(a));

	assert((a = archive_read_new()) != NULL);
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));

	r = archive_read_open_memory(a, buff, used1 - used1/64);
	if (r != ARCHIVE_OK) {
		assertEqualStringA(a, "truncated bzip2 input",
		    archive_error_string(a));
		    goto out;
	}

	for (i = 0; i < 100; i++) {
		if (ARCHIVE_OK != archive_read_next_header(a, &ae)) {
			failure("Should have non-NULL error message for %s",
			    compression);
			assert(NULL != archive_error_string(a));
			break;
		}
		snprintf(path, sizeof(path), "%s%d", compression, i);
		assertEqualString(path, archive_entry_pathname(ae));
		if (datasize != (size_t)archive_read_data(a, data, datasize)) {
			failure("Should have non-NULL error message for %s",
			    compression);
			assert(NULL != archive_error_string(a));
			break;
		}
	}
	assertEqualIntA(a, (use_prog)?ARCHIVE_WARN:ARCHIVE_OK,
	    archive_read_close(a));
	assertEqualInt(ARCHIVE_OK, archive_read_free(a));

out:
	free(data);
	free(buff);
}

DEFINE_TEST(test_read_truncated_filter_bzip2)
{
	test_truncation("bzip2", archive_write_add_filter_bzip2, canBzip2());
}

DEFINE_TEST(test_read_truncated_filter_compress)
{
	test_truncation("compress", archive_write_add_filter_compress, 0);
}

DEFINE_TEST(test_read_truncated_filter_gzip)
{
	test_truncation("gzip", archive_write_add_filter_gzip, canGzip());
}

DEFINE_TEST(test_read_truncated_filter_lzip)
{
	test_truncation("lzip", archive_write_add_filter_lzip, canLzip());
}

DEFINE_TEST(test_read_truncated_filter_lzma)
{
	test_truncation("lzma", archive_write_add_filter_lzma, canLzma());
}

DEFINE_TEST(test_read_truncated_filter_lzop)
{
	test_truncation("lzop", archive_write_add_filter_lzop, canLzop());
}

DEFINE_TEST(test_read_truncated_filter_xz)
{
	test_truncation("xz", archive_write_add_filter_xz, canXz());
}
