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532 lines
16 KiB
C
532 lines
16 KiB
C
// SPDX-License-Identifier: 0BSD
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///////////////////////////////////////////////////////////////////////////////
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//
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/// \file test_filter_flags.c
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/// \brief Tests Filter Flags coders
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//
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// Authors: Jia Tan
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// Lasse Collin
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "tests.h"
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// FIXME: This is from src/liblzma/common/common.h but it cannot be
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// included here. This constant is needed in only a few files, perhaps
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// move it to some other internal header or create a new one?
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#define LZMA_FILTER_RESERVED_START (LZMA_VLI_C(1) << 62)
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#if defined(HAVE_ENCODERS)
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// No tests are run without encoders, so init the global filters
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// only when the encoders are enabled.
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static lzma_filter lzma1_filter = { LZMA_FILTER_LZMA1, NULL };
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static lzma_filter lzma2_filter = { LZMA_FILTER_LZMA2, NULL };
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static lzma_filter delta_filter = { LZMA_FILTER_DELTA, NULL };
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static lzma_filter bcj_filters_encoders[] = {
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#ifdef HAVE_ENCODER_X86
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{ LZMA_FILTER_X86, NULL },
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#endif
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#ifdef HAVE_ENCODER_POWERPC
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{ LZMA_FILTER_POWERPC, NULL },
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#endif
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#ifdef HAVE_ENCODER_IA64
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{ LZMA_FILTER_IA64, NULL },
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#endif
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#ifdef HAVE_ENCODER_ARM
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{ LZMA_FILTER_ARM, NULL },
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#endif
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#ifdef HAVE_ENCODER_ARM64
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{ LZMA_FILTER_ARM64, NULL },
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#endif
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#ifdef HAVE_ENCODER_ARMTHUMB
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{ LZMA_FILTER_ARMTHUMB, NULL },
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#endif
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#ifdef HAVE_ENCODER_SPARC
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{ LZMA_FILTER_SPARC, NULL },
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#endif
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#ifdef HAVE_ENCODER_RISCV
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{ LZMA_FILTER_RISCV, NULL },
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#endif
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};
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// HAVE_ENCODERS ifdef not terminated here because decoders are
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// only used if encoders are, but encoders can still be used
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// even if decoders are not.
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#ifdef HAVE_DECODERS
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static lzma_filter bcj_filters_decoders[] = {
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#ifdef HAVE_DECODER_X86
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{ LZMA_FILTER_X86, NULL },
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#endif
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#ifdef HAVE_DECODER_POWERPC
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{ LZMA_FILTER_POWERPC, NULL },
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#endif
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#ifdef HAVE_DECODER_IA64
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{ LZMA_FILTER_IA64, NULL },
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#endif
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#ifdef HAVE_DECODER_ARM
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{ LZMA_FILTER_ARM, NULL },
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#endif
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#ifdef HAVE_DECODER_ARM64
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{ LZMA_FILTER_ARM64, NULL },
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#endif
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#ifdef HAVE_DECODER_ARMTHUMB
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{ LZMA_FILTER_ARMTHUMB, NULL },
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#endif
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#ifdef HAVE_DECODER_SPARC
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{ LZMA_FILTER_SPARC, NULL },
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#endif
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#ifdef HAVE_DECODER_RISCV
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{ LZMA_FILTER_RISCV, NULL },
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#endif
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};
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#endif
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#endif
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static void
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test_lzma_filter_flags_size(void)
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{
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#ifndef HAVE_ENCODERS
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assert_skip("Encoder support disabled");
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#else
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// For each supported filter, test that the size can be calculated
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// and that the size calculated is reasonable. A reasonable size
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// must be greater than 0, but less than the maximum size for the
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// block header.
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uint32_t size = 0;
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA1)) {
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assert_lzma_ret(lzma_filter_flags_size(&size,
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&lzma1_filter), LZMA_PROG_ERROR);
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}
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2)) {
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assert_lzma_ret(lzma_filter_flags_size(&size,
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&lzma2_filter), LZMA_OK);
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assert_true(size != 0 && size < LZMA_BLOCK_HEADER_SIZE_MAX);
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}
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// Do not use macro ARRAY_SIZE() in the for loop condition directly.
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// If the BCJ filters are not configured and built, then ARRAY_SIZE()
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// will return 0 and cause a warning because the for loop will never
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// execute since any unsigned number cannot be < 0 (-Werror=type-limits).
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const uint32_t bcj_array_size = ARRAY_SIZE(bcj_filters_encoders);
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for (uint32_t i = 0; i < bcj_array_size; i++) {
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assert_lzma_ret(lzma_filter_flags_size(&size,
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&bcj_filters_encoders[i]), LZMA_OK);
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assert_true(size != 0 && size < LZMA_BLOCK_HEADER_SIZE_MAX);
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}
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_DELTA)) {
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assert_lzma_ret(lzma_filter_flags_size(&size,
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&delta_filter), LZMA_OK);
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assert_true(size != 0 && size < LZMA_BLOCK_HEADER_SIZE_MAX);
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}
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// Test invalid Filter IDs
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lzma_filter bad_filter = { 2, NULL };
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assert_lzma_ret(lzma_filter_flags_size(&size, &bad_filter),
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LZMA_OPTIONS_ERROR);
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bad_filter.id = LZMA_VLI_MAX;
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assert_lzma_ret(lzma_filter_flags_size(&size, &bad_filter),
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LZMA_PROG_ERROR);
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bad_filter.id = LZMA_FILTER_RESERVED_START;
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assert_lzma_ret(lzma_filter_flags_size(&size, &bad_filter),
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LZMA_PROG_ERROR);
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#endif
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}
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// Helper function for test_lzma_filter_flags_encode.
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// The should_encode parameter represents if the encoding operation
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// is expected to fail.
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// Avoid data -> encode -> decode -> compare to data.
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// Instead create expected encoding and compare to result from
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// lzma_filter_flags_encode.
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// Filter Flags in .xz are encoded as:
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// |Filter ID (VLI)|Size of Properties (VLI)|Filter Properties|
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#if defined(HAVE_ENCODERS) && defined(HAVE_DECODERS)
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static void
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verify_filter_flags_encode(lzma_filter *filter, bool should_encode)
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{
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uint32_t size = 0;
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// First calculate the size of Filter Flags to know how much
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// memory to allocate to hold the encoded Filter Flags
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assert_lzma_ret(lzma_filter_flags_size(&size, filter), LZMA_OK);
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uint8_t *encoded_out = tuktest_malloc(size * sizeof(uint8_t));
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size_t out_pos = 0;
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if (!should_encode) {
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assert_false(lzma_filter_flags_encode(filter, encoded_out,
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&out_pos, size) == LZMA_OK);
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return;
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}
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// Next encode the Filter Flags for the provided filter
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assert_lzma_ret(lzma_filter_flags_encode(filter, encoded_out,
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&out_pos, size), LZMA_OK);
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assert_uint_eq(size, out_pos);
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// Next decode the VLI for the Filter ID and verify it matches
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// the expected Filter ID
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size_t filter_id_vli_size = 0;
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lzma_vli filter_id = 0;
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assert_lzma_ret(lzma_vli_decode(&filter_id, NULL, encoded_out,
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&filter_id_vli_size, size), LZMA_OK);
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assert_uint_eq(filter->id, filter_id);
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// Next decode the Size of Properties and ensure it equals
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// the expected size.
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// Expected size should be:
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// total filter flag length - size of filter id VLI + size of
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// property size VLI
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// Not verifying the contents of Filter Properties since
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// that belongs in a different test
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size_t size_of_properties_vli_size = 0;
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lzma_vli size_of_properties = 0;
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assert_lzma_ret(lzma_vli_decode(&size_of_properties, NULL,
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encoded_out + filter_id_vli_size,
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&size_of_properties_vli_size, size), LZMA_OK);
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assert_uint_eq(size - (size_of_properties_vli_size +
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filter_id_vli_size), size_of_properties);
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}
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#endif
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static void
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test_lzma_filter_flags_encode(void)
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{
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#if !defined(HAVE_ENCODERS) || !defined(HAVE_DECODERS)
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assert_skip("Encoder or decoder support disabled");
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#else
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// No test for LZMA1 since the .xz format does not support LZMA1
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// and so the flags cannot be encoded for that filter
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2)) {
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// Test with NULL options that should fail
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lzma_options_lzma *options = lzma2_filter.options;
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lzma2_filter.options = NULL;
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verify_filter_flags_encode(&lzma2_filter, false);
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// Place options back in the filter, and test should pass
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lzma2_filter.options = options;
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verify_filter_flags_encode(&lzma2_filter, true);
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}
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// NOTE: Many BCJ filters require that start_offset is a multiple
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// of some power of two. The Filter Flags encoder and decoder don't
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// completely validate the options and thus 257 passes the tests
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// with all BCJ filters. It would be caught when initializing
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// a filter chain encoder or decoder.
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lzma_options_bcj bcj_options = {
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.start_offset = 257
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};
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const uint32_t bcj_array_size = ARRAY_SIZE(bcj_filters_encoders);
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for (uint32_t i = 0; i < bcj_array_size; i++) {
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// NULL options should pass for bcj filters
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verify_filter_flags_encode(&bcj_filters_encoders[i], true);
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lzma_filter bcj_with_options = {
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bcj_filters_encoders[i].id, &bcj_options };
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verify_filter_flags_encode(&bcj_with_options, true);
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}
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_DELTA)) {
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lzma_options_delta delta_opts_below_min = {
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.type = LZMA_DELTA_TYPE_BYTE,
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.dist = LZMA_DELTA_DIST_MIN - 1
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};
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lzma_options_delta delta_opts_above_max = {
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.type = LZMA_DELTA_TYPE_BYTE,
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.dist = LZMA_DELTA_DIST_MAX + 1
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};
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verify_filter_flags_encode(&delta_filter, true);
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lzma_filter delta_filter_bad_options = {
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LZMA_FILTER_DELTA, &delta_opts_below_min };
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// Next test error case using minimum - 1 delta distance
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verify_filter_flags_encode(&delta_filter_bad_options, false);
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// Next test error case using maximum + 1 delta distance
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delta_filter_bad_options.options = &delta_opts_above_max;
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verify_filter_flags_encode(&delta_filter_bad_options, false);
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// Next test NULL case
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delta_filter_bad_options.options = NULL;
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verify_filter_flags_encode(&delta_filter_bad_options, false);
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}
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// Test expected failing cases
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lzma_filter bad_filter = { LZMA_FILTER_RESERVED_START, NULL };
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size_t out_pos = 0;
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size_t out_size = LZMA_BLOCK_HEADER_SIZE_MAX;
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uint8_t out[LZMA_BLOCK_HEADER_SIZE_MAX];
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// Filter ID outside of valid range
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assert_lzma_ret(lzma_filter_flags_encode(&bad_filter, out, &out_pos,
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out_size), LZMA_PROG_ERROR);
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out_pos = 0;
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bad_filter.id = LZMA_VLI_MAX + 1;
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assert_lzma_ret(lzma_filter_flags_encode(&bad_filter, out, &out_pos,
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out_size), LZMA_PROG_ERROR);
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out_pos = 0;
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// Invalid Filter ID
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bad_filter.id = 2;
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assert_lzma_ret(lzma_filter_flags_encode(&bad_filter, out, &out_pos,
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out_size), LZMA_OPTIONS_ERROR);
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out_pos = 0;
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// Out size too small
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2)) {
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uint32_t bad_size = 0;
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// First test with 0 output size
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assert_lzma_ret(lzma_filter_flags_encode(
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&lzma2_filter, out, &out_pos, 0),
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LZMA_PROG_ERROR);
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// Next calculate the size needed to encode and
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// use less than that
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assert_lzma_ret(lzma_filter_flags_size(&bad_size,
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&lzma2_filter), LZMA_OK);
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assert_lzma_ret(lzma_filter_flags_encode(
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&lzma2_filter, out, &out_pos,
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bad_size - 1), LZMA_PROG_ERROR);
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out_pos = 0;
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}
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// Invalid options
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if (lzma_filter_encoder_is_supported(LZMA_FILTER_DELTA)) {
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bad_filter.id = LZMA_FILTER_DELTA;
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// First test with NULL options
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assert_lzma_ret(lzma_filter_flags_encode(&bad_filter, out,
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&out_pos, out_size), LZMA_PROG_ERROR);
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out_pos = 0;
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// Next test with invalid options
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lzma_options_delta bad_options = {
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.dist = LZMA_DELTA_DIST_MAX + 1,
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.type = LZMA_DELTA_TYPE_BYTE
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};
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bad_filter.options = &bad_options;
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assert_lzma_ret(lzma_filter_flags_encode(&bad_filter, out,
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&out_pos, out_size), LZMA_PROG_ERROR);
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}
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#endif
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}
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// Helper function for test_lzma_filter_flags_decode.
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// Encodes the filter_in without using lzma_filter_flags_encode.
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// Leaves the specific assertions of filter_out options to the caller
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// because it is agnostic to the type of options used in the call
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#if defined(HAVE_ENCODERS) && defined(HAVE_DECODERS)
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static void
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verify_filter_flags_decode(lzma_filter *filter_in, lzma_filter *filter_out)
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{
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uint32_t total_size = 0;
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assert_lzma_ret(lzma_filter_flags_size(&total_size, filter_in),
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LZMA_OK);
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assert_uint(total_size, >, 0);
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uint8_t *filter_flag_buffer = tuktest_malloc(total_size);
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uint32_t properties_size = 0;
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size_t out_pos = 0;
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size_t in_pos = 0;
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assert_lzma_ret(lzma_properties_size(&properties_size, filter_in),
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LZMA_OK);
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assert_lzma_ret(lzma_vli_encode(filter_in->id, NULL,
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filter_flag_buffer, &out_pos, total_size), LZMA_OK);
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assert_lzma_ret(lzma_vli_encode(properties_size, NULL,
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filter_flag_buffer, &out_pos, total_size),
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LZMA_OK);
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assert_lzma_ret(lzma_properties_encode(filter_in,
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filter_flag_buffer + out_pos), LZMA_OK);
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assert_lzma_ret(lzma_filter_flags_decode(filter_out, NULL,
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filter_flag_buffer, &in_pos, total_size),
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LZMA_OK);
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assert_uint_eq(filter_in->id, filter_out->id);
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}
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#endif
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static void
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test_lzma_filter_flags_decode(void)
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{
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#if !defined(HAVE_ENCODERS) || !defined(HAVE_DECODERS)
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assert_skip("Encoder or decoder support disabled");
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#else
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// For each filter, only run the decoder test if both the encoder
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// and decoder are enabled. This is because verify_filter_flags_decode
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// uses lzma_filter_flags_size which requires the encoder.
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if (lzma_filter_decoder_is_supported(LZMA_FILTER_LZMA2) &&
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lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2)) {
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lzma_filter lzma2_decoded = { LZMA_FILTER_LZMA2, NULL };
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verify_filter_flags_decode(&lzma2_filter, &lzma2_decoded);
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lzma_options_lzma *expected = lzma2_filter.options;
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lzma_options_lzma *decoded = lzma2_decoded.options;
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// Only the dictionary size is encoded and decoded
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// so only compare those
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assert_uint_eq(decoded->dict_size, expected->dict_size);
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// The decoded options must be freed by the caller
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free(decoded);
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}
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const uint32_t bcj_array_size = ARRAY_SIZE(bcj_filters_decoders);
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for (uint32_t i = 0; i < bcj_array_size; i++) {
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if (lzma_filter_encoder_is_supported(
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bcj_filters_decoders[i].id)) {
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lzma_filter bcj_decoded = {
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bcj_filters_decoders[i].id, NULL };
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lzma_filter bcj_encoded = {
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bcj_filters_decoders[i].id, NULL };
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// First test without options
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verify_filter_flags_decode(&bcj_encoded,
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&bcj_decoded);
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assert_true(bcj_decoded.options == NULL);
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// Next test with offset
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lzma_options_bcj options = {
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.start_offset = 257
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};
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bcj_encoded.options = &options;
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verify_filter_flags_decode(&bcj_encoded,
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&bcj_decoded);
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lzma_options_bcj *decoded_opts = bcj_decoded.options;
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assert_uint_eq(decoded_opts->start_offset,
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options.start_offset);
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free(decoded_opts);
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}
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}
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if (lzma_filter_decoder_is_supported(LZMA_FILTER_DELTA) &&
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lzma_filter_encoder_is_supported(LZMA_FILTER_DELTA)) {
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lzma_filter delta_decoded = { LZMA_FILTER_DELTA, NULL };
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verify_filter_flags_decode(&delta_filter, &delta_decoded);
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lzma_options_delta *expected = delta_filter.options;
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lzma_options_delta *decoded = delta_decoded.options;
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assert_uint_eq(expected->dist, decoded->dist);
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assert_uint_eq(expected->type, decoded->type);
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free(decoded);
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}
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// Test expected failing cases
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uint8_t bad_encoded_filter[LZMA_BLOCK_HEADER_SIZE_MAX];
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lzma_filter bad_filter;
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// Filter ID outside of valid range
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lzma_vli bad_filter_id = LZMA_FILTER_RESERVED_START;
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size_t bad_encoded_out_pos = 0;
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size_t in_pos = 0;
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assert_lzma_ret(lzma_vli_encode(bad_filter_id, NULL,
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bad_encoded_filter, &bad_encoded_out_pos,
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LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_OK);
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assert_lzma_ret(lzma_filter_flags_decode(&bad_filter, NULL,
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bad_encoded_filter, &in_pos,
|
|
LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_DATA_ERROR);
|
|
|
|
bad_encoded_out_pos = 0;
|
|
in_pos = 0;
|
|
|
|
// Invalid Filter ID
|
|
bad_filter_id = 2;
|
|
bad_encoded_out_pos = 0;
|
|
in_pos = 0;
|
|
|
|
assert_lzma_ret(lzma_vli_encode(bad_filter_id, NULL,
|
|
bad_encoded_filter, &bad_encoded_out_pos,
|
|
LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_OK);
|
|
|
|
// Next encode Size of Properties with the value of 0
|
|
assert_lzma_ret(lzma_vli_encode(0, NULL,
|
|
bad_encoded_filter, &bad_encoded_out_pos,
|
|
LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_OK);
|
|
|
|
// Decode should fail on bad Filter ID
|
|
assert_lzma_ret(lzma_filter_flags_decode(&bad_filter, NULL,
|
|
bad_encoded_filter, &in_pos,
|
|
LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_OPTIONS_ERROR);
|
|
bad_encoded_out_pos = 0;
|
|
in_pos = 0;
|
|
|
|
// Outsize too small
|
|
// Encode the LZMA2 filter normally, but then set
|
|
// the out size when decoding as too small
|
|
if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2) &&
|
|
lzma_filter_decoder_is_supported(LZMA_FILTER_LZMA2)) {
|
|
uint32_t filter_flag_size = 0;
|
|
assert_lzma_ret(lzma_filter_flags_size(&filter_flag_size,
|
|
&lzma2_filter), LZMA_OK);
|
|
|
|
assert_lzma_ret(lzma_filter_flags_encode(&lzma2_filter,
|
|
bad_encoded_filter, &bad_encoded_out_pos,
|
|
LZMA_BLOCK_HEADER_SIZE_MAX), LZMA_OK);
|
|
|
|
assert_lzma_ret(lzma_filter_flags_decode(&bad_filter, NULL,
|
|
bad_encoded_filter, &in_pos,
|
|
filter_flag_size - 1), LZMA_DATA_ERROR);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
extern int
|
|
main(int argc, char **argv)
|
|
{
|
|
tuktest_start(argc, argv);
|
|
|
|
#ifdef HAVE_ENCODERS
|
|
// Only init filter options if encoder is supported because decoder
|
|
// tests requires encoder support, so the decoder tests will only
|
|
// run if for a given filter both the encoder and decoder are enabled.
|
|
if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA1)) {
|
|
lzma_options_lzma *options = tuktest_malloc(
|
|
sizeof(lzma_options_lzma));
|
|
lzma_lzma_preset(options, LZMA_PRESET_DEFAULT);
|
|
lzma1_filter.options = options;
|
|
}
|
|
|
|
if (lzma_filter_encoder_is_supported(LZMA_FILTER_LZMA2)) {
|
|
lzma_options_lzma *options = tuktest_malloc(
|
|
sizeof(lzma_options_lzma));
|
|
lzma_lzma_preset(options, LZMA_PRESET_DEFAULT);
|
|
lzma2_filter.options = options;
|
|
}
|
|
|
|
if (lzma_filter_encoder_is_supported(LZMA_FILTER_DELTA)) {
|
|
lzma_options_delta *options = tuktest_malloc(
|
|
sizeof(lzma_options_delta));
|
|
options->dist = LZMA_DELTA_DIST_MIN;
|
|
options->type = LZMA_DELTA_TYPE_BYTE;
|
|
delta_filter.options = options;
|
|
}
|
|
#endif
|
|
|
|
tuktest_run(test_lzma_filter_flags_size);
|
|
tuktest_run(test_lzma_filter_flags_encode);
|
|
tuktest_run(test_lzma_filter_flags_decode);
|
|
return tuktest_end();
|
|
}
|