[thirdparty/systemd.git] / src / journal / test-compress.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <sys/stat.h>

#if HAVE_LZ4
#include <lz4.h>
#endif

#include "alloc-util.h"
#include "compress.h"
#include "fd-util.h"
#include "fs-util.h"
#include "macro.h"
#include "memory-util.h"
#include "path-util.h"
#include "random-util.h"
#include "tests.h"
#include "tmpfile-util.h"

#if HAVE_XZ
# define XZ_OK 0
#else
# define XZ_OK -EPROTONOSUPPORT
#endif

#if HAVE_LZ4
# define LZ4_OK 0
#else
# define LZ4_OK -EPROTONOSUPPORT
#endif

typedef int (compress_blob_t)(const void *src, uint64_t src_size,
                              void *dst, size_t dst_alloc_size, size_t *dst_size);
typedef int (decompress_blob_t)(const void *src, uint64_t src_size,
                                void **dst, size_t *dst_alloc_size,
                                size_t* dst_size, size_t dst_max);
typedef int (decompress_sw_t)(const void *src, uint64_t src_size,
                              void **buffer, size_t *buffer_size,
                              const void *prefix, size_t prefix_len,
                              uint8_t extra);

typedef int (compress_stream_t)(int fdf, int fdt, uint64_t max_bytes);
typedef int (decompress_stream_t)(int fdf, int fdt, uint64_t max_size);

#if HAVE_XZ || HAVE_LZ4
static void test_compress_decompress(int compression,
                                     compress_blob_t compress,
                                     decompress_blob_t decompress,
                                     const char *data,
                                     size_t data_len,
                                     bool may_fail) {
        char compressed[512];
        size_t csize, usize = 0;
        _cleanup_free_ char *decompressed = NULL;
        int r;

        log_info("/* testing %s %s blob compression/decompression */",
                 object_compressed_to_string(compression), data);

        r = compress(data, data_len, compressed, sizeof(compressed), &csize);
        if (r == -ENOBUFS) {
                log_info_errno(r, "compression failed: %m");
                assert_se(may_fail);
        } else {
                assert_se(r == 0);
                r = decompress(compressed, csize,
                               (void **) &decompressed, &usize, &csize, 0);
                assert_se(r == 0);
                assert_se(decompressed);
                assert_se(memcmp(decompressed, data, data_len) == 0);
        }

        r = decompress("garbage", 7,
                       (void **) &decompressed, &usize, &csize, 0);
        assert_se(r < 0);

        /* make sure to have the minimal lz4 compressed size */
        r = decompress("00000000\1g", 9,
                       (void **) &decompressed, &usize, &csize, 0);
        assert_se(r < 0);

        r = decompress("\100000000g", 9,
                       (void **) &decompressed, &usize, &csize, 0);
        assert_se(r < 0);

        memzero(decompressed, usize);
}

static void test_decompress_startswith(int compression,
                                       compress_blob_t compress,
                                       decompress_sw_t decompress_sw,
                                       const char *data,
                                       size_t data_len,
                                       bool may_fail) {

        char *compressed;
        _cleanup_free_ char *compressed1 = NULL, *compressed2 = NULL, *decompressed = NULL;
        size_t csize, usize = 0, len;
        int r;

        log_info("/* testing decompress_startswith with %s on %.20s text */",
                 object_compressed_to_string(compression), data);

#define BUFSIZE_1 512
#define BUFSIZE_2 20000

        compressed = compressed1 = malloc(BUFSIZE_1);
        assert_se(compressed1);
        r = compress(data, data_len, compressed, BUFSIZE_1, &csize);
        if (r == -ENOBUFS) {
                log_info_errno(r, "compression failed: %m");
                assert_se(may_fail);

                compressed = compressed2 = malloc(BUFSIZE_2);
                assert_se(compressed2);
                r = compress(data, data_len, compressed, BUFSIZE_2, &csize);
                assert(r == 0);
        }
        assert_se(r == 0);

        len = strlen(data);

        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, '\0');
        assert_se(r > 0);
        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, 'w');
        assert_se(r == 0);
        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, "barbarbar", 9, ' ');
        assert_se(r == 0);
        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len - 1, data[len-1]);
        assert_se(r > 0);
        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len - 1, 'w');
        assert_se(r == 0);
        r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, '\0');
        assert_se(r > 0);
}

static void test_decompress_startswith_short(int compression,
                                             compress_blob_t compress,
                                             decompress_sw_t decompress_sw) {

#define TEXT "HUGE=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

        char buf[1024];
        size_t i, csize;
        int r;

        log_info("/* %s with %s */", __func__, object_compressed_to_string(compression));

        r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
        assert_se(r == 0);

        for (i = 1; i < strlen(TEXT); i++) {
                size_t alloc_size = i;
                _cleanup_free_ void *buf2 = NULL;

                assert_se(buf2 = malloc(i));

                assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, TEXT[i]) == 1);
                assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, 'y') == 0);
        }
}

static void test_compress_stream(int compression,
                                 const char* cat,
                                 compress_stream_t compress,
                                 decompress_stream_t decompress,
                                 const char *srcfile) {

        _cleanup_close_ int src = -1, dst = -1, dst2 = -1;
        _cleanup_(unlink_tempfilep) char
                pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
                pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
        int r;
        _cleanup_free_ char *cmd = NULL, *cmd2 = NULL;
        struct stat st = {};

        r = find_binary(cat, NULL);
        if (r < 0) {
                log_error_errno(r, "Skipping %s, could not find %s binary: %m", __func__, cat);
                return;
        }

        log_debug("/* testing %s compression */",
                  object_compressed_to_string(compression));

        log_debug("/* create source from %s */", srcfile);

        assert_se((src = open(srcfile, O_RDONLY|O_CLOEXEC)) >= 0);

        log_debug("/* test compression */");

        assert_se((dst = mkostemp_safe(pattern)) >= 0);

        assert_se(compress(src, dst, -1) == 0);

        if (cat) {
                assert_se(asprintf(&cmd, "%s %s | diff %s -", cat, pattern, srcfile) > 0);
                assert_se(system(cmd) == 0);
        }

        log_debug("/* test decompression */");

        assert_se((dst2 = mkostemp_safe(pattern2)) >= 0);

        assert_se(stat(srcfile, &st) == 0);

        assert_se(lseek(dst, 0, SEEK_SET) == 0);
        r = decompress(dst, dst2, st.st_size);
        assert_se(r == 0);

        assert_se(asprintf(&cmd2, "diff %s %s", srcfile, pattern2) > 0);
        assert_se(system(cmd2) == 0);

        log_debug("/* test faulty decompression */");

        assert_se(lseek(dst, 1, SEEK_SET) == 1);
        r = decompress(dst, dst2, st.st_size);
        assert_se(IN_SET(r, 0, -EBADMSG));

        assert_se(lseek(dst, 0, SEEK_SET) == 0);
        assert_se(lseek(dst2, 0, SEEK_SET) == 0);
        r = decompress(dst, dst2, st.st_size - 1);
        assert_se(r == -EFBIG);
}
#endif

#if HAVE_LZ4
static void test_lz4_decompress_partial(void) {
        char buf[20000], buf2[100];
        size_t buf_size = sizeof(buf), compressed;
        int r;
        _cleanup_free_ char *huge = NULL;

#define HUGE_SIZE (4096*1024)
        assert_se(huge = malloc(HUGE_SIZE));
        memset(huge, 'x', HUGE_SIZE);
        memcpy(huge, "HUGE=", 5);

        r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
        assert_se(r >= 0);
        compressed = r;
        log_info("Compressed %i → %zu", HUGE_SIZE, compressed);

        r = LZ4_decompress_safe(buf, huge, r, HUGE_SIZE);
        assert_se(r >= 0);
        log_info("Decompressed → %i", r);

        r = LZ4_decompress_safe_partial(buf, huge,
                                        compressed,
                                        12, HUGE_SIZE);
        assert_se(r >= 0);
        log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE, r);

        for (size_t size = 1; size < sizeof(buf2); size++) {
                /* This failed in older lz4s but works in newer ones. */
                r = LZ4_decompress_safe_partial(buf, buf2, compressed, size, size);
                log_info("Decompressed partial %zu/%zu → %i (%s)", size, size, r,
                                                                   r < 0 ? "bad" : "good");
                if (r >= 0 && LZ4_versionNumber() >= 10803)
                        /* lz4 <= 1.8.2 should fail that test, let's only check for newer ones */
                        assert_se(memcmp(buf2, huge, r) == 0);
        }
}
#endif

int main(int argc, char *argv[]) {
#if HAVE_XZ || HAVE_LZ4
        const char text[] =
                "text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
                "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";

        /* The file to test compression on can be specified as the first argument */
        const char *srcfile = argc > 1 ? argv[1] : argv[0];

        char data[512] = "random\0";

        char huge[4096*1024];
        memset(huge, 'x', sizeof(huge));
        memcpy(huge, "HUGE=", 5);
        char_array_0(huge);

        test_setup_logging(LOG_DEBUG);

        random_bytes(data + 7, sizeof(data) - 7);

#if HAVE_XZ
        test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
                                 text, sizeof(text), false);
        test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
                                 data, sizeof(data), true);

        test_decompress_startswith(OBJECT_COMPRESSED_XZ,
                                   compress_blob_xz, decompress_startswith_xz,
                                   text, sizeof(text), false);
        test_decompress_startswith(OBJECT_COMPRESSED_XZ,
                                   compress_blob_xz, decompress_startswith_xz,
                                   data, sizeof(data), true);
        test_decompress_startswith(OBJECT_COMPRESSED_XZ,
                                   compress_blob_xz, decompress_startswith_xz,
                                   huge, sizeof(huge), true);

        test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
                             compress_stream_xz, decompress_stream_xz, srcfile);

        test_decompress_startswith_short(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_startswith_xz);

#else
        log_info("/* XZ test skipped */");
#endif

#if HAVE_LZ4
        test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
                                 text, sizeof(text), false);
        test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
                                 data, sizeof(data), true);

        test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
                                   compress_blob_lz4, decompress_startswith_lz4,
                                   text, sizeof(text), false);
        test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
                                   compress_blob_lz4, decompress_startswith_lz4,
                                   data, sizeof(data), true);
        test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
                                   compress_blob_lz4, decompress_startswith_lz4,
                                   huge, sizeof(huge), true);

        test_compress_stream(OBJECT_COMPRESSED_LZ4, "lz4cat",
                             compress_stream_lz4, decompress_stream_lz4, srcfile);

        test_lz4_decompress_partial();

        test_decompress_startswith_short(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_startswith_lz4);

#else
        log_info("/* LZ4 test skipped */");
#endif

        return 0;
#else
        log_info("/* XZ and LZ4 tests skipped */");
        return EXIT_TEST_SKIP;
#endif
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
843fecc0	2
ca78ad1d ZJS	3	#include <sys/stat.h>
ca78ad1d ZJS	4
349cc4a5	5	#if HAVE_LZ4
e3cc7fc4 ZJS	6	#include <lz4.h>
	7	#endif
	8
b5efdb8a	9	#include "alloc-util.h"
843fecc0	10	#include "compress.h"
3ffd4af2	11	#include "fd-util.h"
627d2bac	12	#include "fs-util.h"
843fecc0	13	#include "macro.h"
0a970718	14	#include "memory-util.h"
69847060	15	#include "path-util.h"
3df3e884	16	#include "random-util.h"
6d7c4033	17	#include "tests.h"
e4de7287	18	#include "tmpfile-util.h"
843fecc0	19
349cc4a5	20	#if HAVE_XZ
d89c8fdf ZJS	21	# define XZ_OK 0
	22	#else
	23	# define XZ_OK -EPROTONOSUPPORT
	24	#endif
	25
349cc4a5	26	#if HAVE_LZ4
d89c8fdf ZJS	27	# define LZ4_OK 0
	28	#else
	29	# define LZ4_OK -EPROTONOSUPPORT
	30	#endif
	31
	32	typedef int (compress_blob_t)(const void *src, uint64_t src_size,
5d6f46b6	33	void dst, size_t dst_alloc_size, size_t dst_size);
d89c8fdf	34	typedef int (decompress_blob_t)(const void *src, uint64_t src_size,
fa1c4b51 ZJS	35	void *dst, size_t dst_alloc_size,
fa1c4b51 ZJS	36	size_t* dst_size, size_t dst_max);
d89c8fdf	37	typedef int (decompress_sw_t)(const void *src, uint64_t src_size,
fa1c4b51 ZJS	38	void *buffer, size_t buffer_size,
fa1c4b51 ZJS	39	const void *prefix, size_t prefix_len,
d89c8fdf ZJS	40	uint8_t extra);
d89c8fdf ZJS	41
59f448cf LP	42	typedef int (compress_stream_t)(int fdf, int fdt, uint64_t max_bytes);
59f448cf LP	43	typedef int (decompress_stream_t)(int fdf, int fdt, uint64_t max_size);
d89c8fdf	44
349cc4a5	45	#if HAVE_XZ \|\| HAVE_LZ4
d89c8fdf ZJS	46	static void test_compress_decompress(int compression,
d89c8fdf ZJS	47	compress_blob_t compress,
c552d602 ZJS	48	decompress_blob_t decompress,
	49	const char *data,
	50	size_t data_len,
	51	bool may_fail) {
843fecc0	52	char compressed[512];
5d6f46b6	53	size_t csize, usize = 0;
d89c8fdf ZJS	54	_cleanup_free_ char *decompressed = NULL;
	55	int r;
	56
c552d602 ZJS	57	log_info("/* testing %s %s blob compression/decompression */",
	58	object_compressed_to_string(compression), data);
	59
5d6f46b6	60	r = compress(data, data_len, compressed, sizeof(compressed), &csize);
c552d602	61	if (r == -ENOBUFS) {
da927ba9	62	log_info_errno(r, "compression failed: %m");
787784c4	63	assert_se(may_fail);
c552d602	64	} else {
787784c4	65	assert_se(r == 0);
c552d602 ZJS	66	r = decompress(compressed, csize,
c552d602 ZJS	67	(void **) &decompressed, &usize, &csize, 0);
787784c4	68	assert_se(r == 0);
c552d602 ZJS	69	assert_se(decompressed);
	70	assert_se(memcmp(decompressed, data, data_len) == 0);
	71	}
d89c8fdf ZJS	72
	73	r = decompress("garbage", 7,
	74	(void **) &decompressed, &usize, &csize, 0);
787784c4	75	assert_se(r < 0);
d89c8fdf ZJS	76
	77	/* make sure to have the minimal lz4 compressed size */
	78	r = decompress("00000000\1g", 9,
	79	(void **) &decompressed, &usize, &csize, 0);
787784c4	80	assert_se(r < 0);
d89c8fdf ZJS	81
	82	r = decompress("\100000000g", 9,
	83	(void **) &decompressed, &usize, &csize, 0);
787784c4	84	assert_se(r < 0);
d89c8fdf ZJS	85
d89c8fdf ZJS	86	memzero(decompressed, usize);
843fecc0 RC	87	}
843fecc0 RC	88
d89c8fdf ZJS	89	static void test_decompress_startswith(int compression,
d89c8fdf ZJS	90	compress_blob_t compress,
c552d602 ZJS	91	decompress_sw_t decompress_sw,
	92	const char *data,
	93	size_t data_len,
	94	bool may_fail) {
d89c8fdf	95
ae5e1b19 ZJS	96	char *compressed;
	97	_cleanup_free_ char compressed1 = NULL, compressed2 = NULL, *decompressed = NULL;
	98	size_t csize, usize = 0, len;
c552d602	99	int r;
d89c8fdf	100
13e785f7	101	log_info("/* testing decompress_startswith with %s on %.20s text */",
c552d602 ZJS	102	object_compressed_to_string(compression), data);
c552d602 ZJS	103
ae5e1b19 ZJS	104	#define BUFSIZE_1 512
	105	#define BUFSIZE_2 20000
	106
	107	compressed = compressed1 = malloc(BUFSIZE_1);
	108	assert_se(compressed1);
	109	r = compress(data, data_len, compressed, BUFSIZE_1, &csize);
c552d602	110	if (r == -ENOBUFS) {
da927ba9	111	log_info_errno(r, "compression failed: %m");
787784c4	112	assert_se(may_fail);
ae5e1b19 ZJS	113
	114	compressed = compressed2 = malloc(BUFSIZE_2);
	115	assert_se(compressed2);
	116	r = compress(data, data_len, compressed, BUFSIZE_2, &csize);
	117	assert(r == 0);
c552d602	118	}
787784c4	119	assert_se(r == 0);
d89c8fdf	120
ae5e1b19 ZJS	121	len = strlen(data);
	122
	123	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, '\0');
	124	assert_se(r > 0);
	125	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, 'w');
	126	assert_se(r == 0);
	127	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, "barbarbar", 9, ' ');
	128	assert_se(r == 0);
	129	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len - 1, data[len-1]);
	130	assert_se(r > 0);
	131	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len - 1, 'w');
	132	assert_se(r == 0);
	133	r = decompress_sw(compressed, csize, (void **) &decompressed, &usize, data, len, '\0');
	134	assert_se(r > 0);
843fecc0 RC	135	}
843fecc0 RC	136
ba17efce ZJS	137	static void test_decompress_startswith_short(int compression,
	138	compress_blob_t compress,
	139	decompress_sw_t decompress_sw) {
	140
	141	#define TEXT "HUGE=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
	142
	143	char buf[1024];
	144	size_t i, csize;
	145	int r;
	146
	147	log_info("/* %s with %s */", __func__, object_compressed_to_string(compression));
	148
	149	r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
	150	assert_se(r == 0);
	151
	152	for (i = 1; i < strlen(TEXT); i++) {
	153	size_t alloc_size = i;
	154	_cleanup_free_ void *buf2 = NULL;
	155
	156	assert_se(buf2 = malloc(i));
	157
	158	assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, TEXT[i]) == 1);
	159	assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, 'y') == 0);
	160	}
	161	}
	162
d89c8fdf ZJS	163	static void test_compress_stream(int compression,
	164	const char* cat,
	165	compress_stream_t compress,
	166	decompress_stream_t decompress,
	167	const char *srcfile) {
	168
355b59e2	169	_cleanup_close_ int src = -1, dst = -1, dst2 = -1;
627d2bac ZJS	170	_cleanup_(unlink_tempfilep) char
	171	pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
	172	pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
355b59e2	173	int r;
69847060	174	_cleanup_free_ char cmd = NULL, cmd2 = NULL;
355b59e2 ZJS	175	struct stat st = {};
355b59e2 ZJS	176
69847060 LP	177	r = find_binary(cat, NULL);
	178	if (r < 0) {
	179	log_error_errno(r, "Skipping %s, could not find %s binary: %m", __func__, cat);
	180	return;
	181	}
	182
d89c8fdf ZJS	183	log_debug("/* testing %s compression */",
	184	object_compressed_to_string(compression));
	185
355b59e2 ZJS	186	log_debug("/* create source from %s */", srcfile);
	187
	188	assert_se((src = open(srcfile, O_RDONLY\|O_CLOEXEC)) >= 0);
	189
	190	log_debug("/* test compression */");
	191
646853bd	192	assert_se((dst = mkostemp_safe(pattern)) >= 0);
355b59e2	193
52754725	194	assert_se(compress(src, dst, -1) == 0);
355b59e2	195
d89c8fdf ZJS	196	if (cat) {
d89c8fdf ZJS	197	assert_se(asprintf(&cmd, "%s %s \| diff %s -", cat, pattern, srcfile) > 0);
52754725	198	assert_se(system(cmd) == 0);
d89c8fdf	199	}
355b59e2 ZJS	200
	201	log_debug("/* test decompression */");
	202
646853bd	203	assert_se((dst2 = mkostemp_safe(pattern2)) >= 0);
355b59e2 ZJS	204
	205	assert_se(stat(srcfile, &st) == 0);
	206
	207	assert_se(lseek(dst, 0, SEEK_SET) == 0);
d89c8fdf	208	r = decompress(dst, dst2, st.st_size);
0c0cdb06	209	assert_se(r == 0);
355b59e2 ZJS	210
	211	assert_se(asprintf(&cmd2, "diff %s %s", srcfile, pattern2) > 0);
	212	assert_se(system(cmd2) == 0);
	213
	214	log_debug("/* test faulty decompression */");
	215
	216	assert_se(lseek(dst, 1, SEEK_SET) == 1);
d89c8fdf	217	r = decompress(dst, dst2, st.st_size);
4c701096	218	assert_se(IN_SET(r, 0, -EBADMSG));
355b59e2 ZJS	219
	220	assert_se(lseek(dst, 0, SEEK_SET) == 0);
	221	assert_se(lseek(dst2, 0, SEEK_SET) == 0);
d89c8fdf	222	r = decompress(dst, dst2, st.st_size - 1);
0c0cdb06	223	assert_se(r == -EFBIG);
355b59e2	224	}
ccc717fa	225	#endif
355b59e2	226
349cc4a5	227	#if HAVE_LZ4
e3cc7fc4	228	static void test_lz4_decompress_partial(void) {
e41ef6fd	229	char buf[20000], buf2[100];
e3cc7fc4 ZJS	230	size_t buf_size = sizeof(buf), compressed;
e3cc7fc4 ZJS	231	int r;
ae5e1b19	232	_cleanup_free_ char *huge = NULL;
e3cc7fc4	233
ae5e1b19	234	#define HUGE_SIZE (4096*1024)
e41ef6fd	235	assert_se(huge = malloc(HUGE_SIZE));
ae5e1b19	236	memset(huge, 'x', HUGE_SIZE);
e3cc7fc4 ZJS	237	memcpy(huge, "HUGE=", 5);
e3cc7fc4 ZJS	238
777fe71f	239	r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
e3cc7fc4 ZJS	240	assert_se(r >= 0);
e3cc7fc4 ZJS	241	compressed = r;
ae5e1b19	242	log_info("Compressed %i → %zu", HUGE_SIZE, compressed);
e3cc7fc4	243
ae5e1b19	244	r = LZ4_decompress_safe(buf, huge, r, HUGE_SIZE);
e3cc7fc4 ZJS	245	assert_se(r >= 0);
	246	log_info("Decompressed → %i", r);
	247
	248	r = LZ4_decompress_safe_partial(buf, huge,
	249	compressed,
ae5e1b19	250	12, HUGE_SIZE);
e3cc7fc4	251	assert_se(r >= 0);
ae5e1b19	252	log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE, r);
e3cc7fc4	253
e41ef6fd ZJS	254	for (size_t size = 1; size < sizeof(buf2); size++) {
	255	/* This failed in older lz4s but works in newer ones. */
	256	r = LZ4_decompress_safe_partial(buf, buf2, compressed, size, size);
	257	log_info("Decompressed partial %zu/%zu → %i (%s)", size, size, r,
	258	r < 0 ? "bad" : "good");
	259	if (r >= 0 && LZ4_versionNumber() >= 10803)
	260	/* lz4 <= 1.8.2 should fail that test, let's only check for newer ones */
	261	assert_se(memcmp(buf2, huge, r) == 0);
	262	}
e3cc7fc4 ZJS	263	}
	264	#endif
	265
843fecc0	266	int main(int argc, char *argv[]) {
349cc4a5	267	#if HAVE_XZ \|\| HAVE_LZ4
c552d602 ZJS	268	const char text[] =
	269	"text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
	270	"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
	271
3e216115 ZJS	272	/* The file to test compression on can be specified as the first argument */
	273	const char *srcfile = argc > 1 ? argv[1] : argv[0];
	274
c552d602	275	char data[512] = "random\0";
355b59e2	276
ae5e1b19 ZJS	277	char huge[4096*1024];
	278	memset(huge, 'x', sizeof(huge));
	279	memcpy(huge, "HUGE=", 5);
	280	char_array_0(huge);
	281
6d7c4033	282	test_setup_logging(LOG_DEBUG);
355b59e2	283
c552d602 ZJS	284	random_bytes(data + 7, sizeof(data) - 7);
c552d602 ZJS	285
349cc4a5	286	#if HAVE_XZ
c552d602 ZJS	287	test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
	288	text, sizeof(text), false);
	289	test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
	290	data, sizeof(data), true);
ae5e1b19	291
c552d602 ZJS	292	test_decompress_startswith(OBJECT_COMPRESSED_XZ,
	293	compress_blob_xz, decompress_startswith_xz,
	294	text, sizeof(text), false);
	295	test_decompress_startswith(OBJECT_COMPRESSED_XZ,
	296	compress_blob_xz, decompress_startswith_xz,
	297	data, sizeof(data), true);
ae5e1b19 ZJS	298	test_decompress_startswith(OBJECT_COMPRESSED_XZ,
	299	compress_blob_xz, decompress_startswith_xz,
	300	huge, sizeof(huge), true);
	301
d89c8fdf	302	test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
3e216115	303	compress_stream_xz, decompress_stream_xz, srcfile);
ba17efce ZJS	304
	305	test_decompress_startswith_short(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_startswith_xz);
	306
d89c8fdf ZJS	307	#else
	308	log_info("/* XZ test skipped */");
	309	#endif
c552d602	310
349cc4a5	311	#if HAVE_LZ4
c552d602 ZJS	312	test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
	313	text, sizeof(text), false);
	314	test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
	315	data, sizeof(data), true);
ae5e1b19	316
c552d602 ZJS	317	test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
	318	compress_blob_lz4, decompress_startswith_lz4,
	319	text, sizeof(text), false);
	320	test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
	321	compress_blob_lz4, decompress_startswith_lz4,
	322	data, sizeof(data), true);
ae5e1b19 ZJS	323	test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
	324	compress_blob_lz4, decompress_startswith_lz4,
	325	huge, sizeof(huge), true);
d89c8fdf	326
4b5bc539	327	test_compress_stream(OBJECT_COMPRESSED_LZ4, "lz4cat",
3e216115	328	compress_stream_lz4, decompress_stream_lz4, srcfile);
e3cc7fc4 ZJS	329
e3cc7fc4 ZJS	330	test_lz4_decompress_partial();
ba17efce ZJS	331
	332	test_decompress_startswith_short(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_startswith_lz4);
	333
d89c8fdf ZJS	334	#else
	335	log_info("/* LZ4 test skipped */");
	336	#endif
843fecc0 RC	337
843fecc0 RC	338	return 0;
ccc717fa	339	#else
964bc0ad	340	log_info("/* XZ and LZ4 tests skipped */");
ccc717fa ZJS	341	return EXIT_TEST_SKIP;
ccc717fa ZJS	342	#endif
843fecc0	343	}