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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* wrap.c
*
* Copyright (C) 2022 David Oberhollenzer <goliath@infraroot.at>
*/
#include "xfrm/compress.h"
#include "xfrm/stream.h"
#include "xfrm/wrap.h"
#include "util/test.h"
#include "sqfs/io.h"
#include "common.h"
#include "blob.h"
#if defined(DO_XZ)
#define mkdecompressor decompressor_stream_xz_create
#define mkcompressor compressor_stream_xz_create
#elif defined(DO_BZIP2)
#define mkdecompressor decompressor_stream_bzip2_create
#define mkcompressor compressor_stream_bzip2_create
#elif defined(DO_ZSTD)
#define mkdecompressor decompressor_stream_zstd_create
#define mkcompressor compressor_stream_zstd_create
#elif defined(DO_GZIP)
#define mkdecompressor decompressor_stream_gzip_create
#define mkcompressor compressor_stream_gzip_create
#endif
/*****************************************************************************/
static size_t mo_written = 0;
static sqfs_u8 mo_buffer[1024];
static bool mo_flushed = false;
static int mem_append(sqfs_ostream_t *strm, const void *data, size_t size);
static int mem_flush(sqfs_ostream_t *strm);
static sqfs_ostream_t mem_ostream = {
{ 1, NULL, NULL, },
mem_append,
mem_flush,
NULL,
};
static int mem_append(sqfs_ostream_t *strm, const void *data, size_t size)
{
TEST_ASSERT(strm == &mem_ostream);
TEST_ASSERT(size > 0);
TEST_ASSERT(mo_written <= sizeof(mo_buffer));
TEST_ASSERT(size <= (sizeof(mo_buffer) - mo_written));
if (data == NULL) {
memset(mo_buffer + mo_written, 0, size);
} else {
memcpy(mo_buffer + mo_written, data, size);
}
mo_written += size;
return 0;
}
static int mem_flush(sqfs_ostream_t *strm)
{
TEST_ASSERT(strm == &mem_ostream);
TEST_ASSERT(!mo_flushed);
mo_flushed = true;
return 0;
}
/*****************************************************************************/
static void run_unpack_test(const void *blob, size_t size)
{
sqfs_istream_t *istream, *mem_istream;
xfrm_stream_t *xfrm;
sqfs_s32 ret;
size_t i;
char c;
mem_istream = istream_memory_create("memstream", 7, blob, size);
TEST_NOT_NULL(mem_istream);
xfrm = mkdecompressor();
TEST_NOT_NULL(xfrm);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 1);
istream = istream_xfrm_create(mem_istream, xfrm);
TEST_NOT_NULL(istream);
TEST_EQUAL_UI(((sqfs_object_t *)istream)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 2);
TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 2);
for (i = 0; i < (sizeof(orig) - 1); ++i) {
ret = sqfs_istream_read(istream, &c, 1);
TEST_EQUAL_I(ret, 1);
TEST_EQUAL_I(c, orig[i]);
}
ret = sqfs_istream_read(istream, &c, 1);
TEST_EQUAL_I(ret, 0);
ret = sqfs_istream_read(istream, &c, 1);
TEST_EQUAL_I(ret, 0);
sqfs_drop(istream);
TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
sqfs_drop(xfrm);
sqfs_drop(mem_istream);
}
static void run_pack_test(void)
{
sqfs_ostream_t *ostream;
xfrm_stream_t *xfrm;
size_t i;
int ret;
mo_written = 0;
mo_flushed = false;
xfrm = mkcompressor(NULL);
TEST_NOT_NULL(xfrm);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 1);
ostream = ostream_xfrm_create(&mem_ostream, xfrm);
TEST_NOT_NULL(ostream);
TEST_EQUAL_UI(((sqfs_object_t *)ostream)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 2);
TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 2);
for (i = 0; i < (sizeof(orig) - 1); ++i) {
ret = ostream->append(ostream, orig + i, 1);
TEST_EQUAL_I(ret, 0);
}
ret = ostream->flush(ostream);
TEST_EQUAL_I(ret, 0);
TEST_ASSERT(mo_flushed);
TEST_ASSERT(mo_written < sizeof(orig));
ret = memcmp(mo_buffer, orig, mo_written);
TEST_ASSERT(ret != 0);
sqfs_drop(ostream);
TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 1);
TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
sqfs_drop(xfrm);
}
int main(int argc, char **argv)
{
(void)argc; (void)argv;
/* normal stream */
run_unpack_test(blob_in, sizeof(blob_in));
/* concatenated streams */
#if !defined(DO_GZIP)
run_unpack_test(blob_in_concat, sizeof(blob_in_concat));
#else
(void)blob_in_concat;
#endif
/* compress */
run_pack_test();
/* restore from compressed */
run_unpack_test(mo_buffer, mo_written);
return EXIT_SUCCESS;
}
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