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

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

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