249 lines
6.2 KiB
C
249 lines
6.2 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file test_block_header.c
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/// \brief Tests Block Header coders
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//
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// Copyright (C) 2007 Lasse Collin
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "tests.h"
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static uint8_t buf[LZMA_BLOCK_HEADER_SIZE_MAX];
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static lzma_block known_options;
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static lzma_block decoded_options;
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static lzma_options_lzma opt_lzma;
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static lzma_filter filters_none[1] = {
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{
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.id = LZMA_VLI_UNKNOWN,
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},
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};
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static lzma_filter filters_one[2] = {
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{
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.id = LZMA_FILTER_LZMA2,
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.options = &opt_lzma,
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}, {
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.id = LZMA_VLI_UNKNOWN,
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}
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};
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static lzma_filter filters_four[5] = {
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{
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_LZMA2,
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.options = &opt_lzma,
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}, {
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.id = LZMA_VLI_UNKNOWN,
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}
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};
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static lzma_filter filters_five[6] = {
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{
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_X86,
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.options = NULL,
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}, {
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.id = LZMA_FILTER_LZMA2,
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.options = &opt_lzma,
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}, {
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.id = LZMA_VLI_UNKNOWN,
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}
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};
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static void
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code(void)
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{
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expect(lzma_block_header_encode(&known_options, buf) == LZMA_OK);
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lzma_filter filters[LZMA_FILTERS_MAX + 1];
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memcrap(filters, sizeof(filters));
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memcrap(&decoded_options, sizeof(decoded_options));
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decoded_options.header_size = known_options.header_size;
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decoded_options.check = known_options.check;
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decoded_options.filters = filters;
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expect(lzma_block_header_decode(&decoded_options, NULL, buf)
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== LZMA_OK);
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expect(known_options.compressed_size
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== decoded_options.compressed_size);
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expect(known_options.uncompressed_size
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== decoded_options.uncompressed_size);
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for (size_t i = 0; known_options.filters[i].id
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!= LZMA_VLI_UNKNOWN; ++i)
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expect(known_options.filters[i].id == filters[i].id);
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for (size_t i = 0; i < LZMA_FILTERS_MAX; ++i)
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free(decoded_options.filters[i].options);
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}
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static void
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test1(void)
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{
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known_options = (lzma_block){
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.check = LZMA_CHECK_NONE,
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.compressed_size = LZMA_VLI_UNKNOWN,
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.uncompressed_size = LZMA_VLI_UNKNOWN,
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.filters = NULL,
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};
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expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
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known_options.filters = filters_none;
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expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
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known_options.filters = filters_five;
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expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
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known_options.filters = filters_one;
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.check = 999; // Some invalid value, which gets ignored.
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.compressed_size = 5;
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.compressed_size = 0; // Cannot be zero.
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expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
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// LZMA_VLI_MAX is too big to keep the total size of the Block
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// a valid VLI, but lzma_block_header_size() is not meant
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// to validate it. (lzma_block_header_encode() must validate it.)
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known_options.compressed_size = LZMA_VLI_MAX;
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.compressed_size = LZMA_VLI_UNKNOWN;
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known_options.uncompressed_size = 0;
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.uncompressed_size = LZMA_VLI_MAX + 1;
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expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
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}
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static void
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test2(void)
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{
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known_options = (lzma_block){
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.check = LZMA_CHECK_CRC32,
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.compressed_size = LZMA_VLI_UNKNOWN,
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.uncompressed_size = LZMA_VLI_UNKNOWN,
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.filters = filters_four,
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};
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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code();
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known_options.compressed_size = 123456;
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known_options.uncompressed_size = 234567;
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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code();
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// We can make the sizes smaller while keeping the header size
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// the same.
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known_options.compressed_size = 12;
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known_options.uncompressed_size = 23;
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code();
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}
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static void
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test3(void)
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{
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known_options = (lzma_block){
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.check = LZMA_CHECK_CRC32,
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.compressed_size = LZMA_VLI_UNKNOWN,
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.uncompressed_size = LZMA_VLI_UNKNOWN,
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.filters = filters_one,
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};
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expect(lzma_block_header_size(&known_options) == LZMA_OK);
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known_options.header_size += 4;
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expect(lzma_block_header_encode(&known_options, buf) == LZMA_OK);
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lzma_filter filters[LZMA_FILTERS_MAX + 1];
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decoded_options.header_size = known_options.header_size;
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decoded_options.check = known_options.check;
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decoded_options.filters = filters;
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// Wrong size
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++buf[0];
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expect(lzma_block_header_decode(&decoded_options, NULL, buf)
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== LZMA_PROG_ERROR);
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--buf[0];
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// Wrong CRC32
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buf[known_options.header_size - 1] ^= 1;
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expect(lzma_block_header_decode(&decoded_options, NULL, buf)
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== LZMA_DATA_ERROR);
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buf[known_options.header_size - 1] ^= 1;
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// Unsupported filter
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// NOTE: This may need updating when new IDs become supported.
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buf[2] ^= 0x1F;
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integer_write_32(buf + known_options.header_size - 4,
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lzma_crc32(buf, known_options.header_size - 4, 0));
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expect(lzma_block_header_decode(&decoded_options, NULL, buf)
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== LZMA_OPTIONS_ERROR);
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buf[2] ^= 0x1F;
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// Non-nul Padding
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buf[known_options.header_size - 4 - 1] ^= 1;
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integer_write_32(buf + known_options.header_size - 4,
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lzma_crc32(buf, known_options.header_size - 4, 0));
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expect(lzma_block_header_decode(&decoded_options, NULL, buf)
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== LZMA_OPTIONS_ERROR);
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buf[known_options.header_size - 4 - 1] ^= 1;
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}
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int
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main(void)
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{
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lzma_init();
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succeed(lzma_lzma_preset(&opt_lzma, 1));
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test1();
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test2();
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test3();
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return 0;
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}
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