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///////////////////////////////////////////////////////////////////////////////
//
/// \file test_memlimit.c
/// \brief Tests memory usage limit in decoders
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#include "tests.h"
#include "mythread.h"
#define MEMLIMIT_TOO_LOW 1234U
#define MEMLIMIT_HIGH_ENOUGH (2U << 20)
static uint8_t *in;
static size_t in_size;
#ifdef HAVE_DECODERS
static uint8_t out[8192];
#endif
static void
test_memlimit_stream_decoder(void)
{
#ifndef HAVE_DECODERS
assert_skip("Decoder support disabled");
#else
lzma_stream strm = LZMA_STREAM_INIT;
assert_lzma_ret(lzma_stream_decoder(&strm, MEMLIMIT_TOO_LOW, 0),
LZMA_OK);
strm.next_in = in;
strm.avail_in = in_size;
strm.next_out = out;
strm.avail_out = sizeof(out);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_MEMLIMIT_ERROR);
assert_uint_eq(lzma_memlimit_get(&strm), MEMLIMIT_TOO_LOW);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_TOO_LOW + 1),
LZMA_MEMLIMIT_ERROR);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_HIGH_ENOUGH),
LZMA_OK);
// This fails before commit 660739f99ab211edec4071de98889fb32ed04e98
// (liblzma <= 5.2.6, liblzma <= 5.3.3alpha). It was fixed in 5.2.7.
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_STREAM_END);
lzma_end(&strm);
#endif
}
static void
test_memlimit_stream_decoder_mt(void)
{
#ifndef MYTHREAD_ENABLED
assert_skip("Threading support disabled");
#elif !defined(HAVE_DECODERS)
assert_skip("Decoder support disabled");
#else
lzma_stream strm = LZMA_STREAM_INIT;
lzma_mt mt = {
.flags = 0,
.threads = 1,
.timeout = 0,
.memlimit_threading = 0,
.memlimit_stop = MEMLIMIT_TOO_LOW,
};
assert_lzma_ret(lzma_stream_decoder_mt(&strm, &mt), LZMA_OK);
strm.next_in = in;
strm.avail_in = in_size;
strm.next_out = out;
strm.avail_out = sizeof(out);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_MEMLIMIT_ERROR);
assert_uint_eq(lzma_memlimit_get(&strm), MEMLIMIT_TOO_LOW);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_TOO_LOW + 1),
LZMA_MEMLIMIT_ERROR);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_HIGH_ENOUGH),
LZMA_OK);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_STREAM_END);
lzma_end(&strm);
#endif
}
static void
test_memlimit_alone_decoder(void)
{
#ifndef HAVE_DECODERS
assert_skip("Decoder support disabled");
#else
size_t alone_size;
uint8_t *alone_buf = tuktest_file_from_srcdir(
"files/good-unknown_size-with_eopm.lzma", &alone_size);
lzma_stream strm = LZMA_STREAM_INIT;
assert_lzma_ret(lzma_alone_decoder(&strm, MEMLIMIT_TOO_LOW), LZMA_OK);
strm.next_in = alone_buf;
strm.avail_in = alone_size;
strm.next_out = out;
strm.avail_out = sizeof(out);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_MEMLIMIT_ERROR);
assert_uint_eq(lzma_memlimit_get(&strm), MEMLIMIT_TOO_LOW);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_TOO_LOW + 1),
LZMA_MEMLIMIT_ERROR);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_HIGH_ENOUGH),
LZMA_OK);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_STREAM_END);
lzma_end(&strm);
#endif
}
static void
test_memlimit_auto_decoder(void)
{
#ifndef HAVE_DECODERS
assert_skip("Decoder support disabled");
#else
lzma_stream strm = LZMA_STREAM_INIT;
assert_lzma_ret(lzma_auto_decoder(&strm, MEMLIMIT_TOO_LOW, 0),
LZMA_OK);
strm.next_in = in;
strm.avail_in = in_size;
strm.next_out = out;
strm.avail_out = sizeof(out);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_MEMLIMIT_ERROR);
assert_uint_eq(lzma_memlimit_get(&strm), MEMLIMIT_TOO_LOW);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_TOO_LOW + 1),
LZMA_MEMLIMIT_ERROR);
assert_lzma_ret(lzma_memlimit_set(&strm, MEMLIMIT_HIGH_ENOUGH),
LZMA_OK);
assert_lzma_ret(lzma_code(&strm, LZMA_FINISH), LZMA_STREAM_END);
lzma_end(&strm);
#endif
}
extern int
main(int argc, char **argv)
{
tuktest_start(argc, argv);
in = tuktest_file_from_srcdir("files/good-1-check-crc32.xz", &in_size);
tuktest_run(test_memlimit_stream_decoder);
tuktest_run(test_memlimit_stream_decoder_mt);
tuktest_run(test_memlimit_alone_decoder);
tuktest_run(test_memlimit_auto_decoder);
return tuktest_end();
}
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