+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-
-#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
-
-#define HUGE_SIZE (4096*1024)
-
-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_COMPRESSION
-_unused_ static void test_compress_decompress(const char *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 */",
- 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);
-}
-
-_unused_ static void test_decompress_startswith(const char *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 */",
- 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);
-}
-
-_unused_ static void test_decompress_startswith_short(const char *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__, 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);
- }
-}
-
-_unused_ static void test_compress_stream(const char *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_executable(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 */", 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;
-
- log_debug("/* %s */", __func__);
-
- assert_se(huge = malloc(HUGE_SIZE));
- memcpy(huge, "HUGE=", STRLEN("HUGE="));
- memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
- huge[HUGE_SIZE - 1] = '\0';
-
- 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_COMPRESSION
- _unused_ 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";
-
- _cleanup_free_ char *huge = NULL;
-
- assert_se(huge = malloc(HUGE_SIZE));
- memcpy(huge, "HUGE=", STRLEN("HUGE="));
- memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
- huge[HUGE_SIZE - 1] = '\0';
-
- test_setup_logging(LOG_DEBUG);
-
- random_bytes(data + 7, sizeof(data) - 7);
-
-#if HAVE_XZ
- test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
- text, sizeof(text), false);
- test_compress_decompress("XZ", compress_blob_xz, decompress_blob_xz,
- data, sizeof(data), true);
-
- test_decompress_startswith("XZ",
- compress_blob_xz, decompress_startswith_xz,
- text, sizeof(text), false);
- test_decompress_startswith("XZ",
- compress_blob_xz, decompress_startswith_xz,
- data, sizeof(data), true);
- test_decompress_startswith("XZ",
- compress_blob_xz, decompress_startswith_xz,
- huge, HUGE_SIZE, true);
-
- test_compress_stream("XZ", "xzcat",
- compress_stream_xz, decompress_stream_xz, srcfile);
-
- test_decompress_startswith_short("XZ", compress_blob_xz, decompress_startswith_xz);
-
-#else
- log_info("/* XZ test skipped */");
-#endif
-
-#if HAVE_LZ4
- test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
- text, sizeof(text), false);
- test_compress_decompress("LZ4", compress_blob_lz4, decompress_blob_lz4,
- data, sizeof(data), true);
-
- test_decompress_startswith("LZ4",
- compress_blob_lz4, decompress_startswith_lz4,
- text, sizeof(text), false);
- test_decompress_startswith("LZ4",
- compress_blob_lz4, decompress_startswith_lz4,
- data, sizeof(data), true);
- test_decompress_startswith("LZ4",
- compress_blob_lz4, decompress_startswith_lz4,
- huge, HUGE_SIZE, true);
-
- test_compress_stream("LZ4", "lz4cat",
- compress_stream_lz4, decompress_stream_lz4, srcfile);
-
- test_lz4_decompress_partial();
-
- test_decompress_startswith_short("LZ4", compress_blob_lz4, decompress_startswith_lz4);
-
-#else
- log_info("/* LZ4 test skipped */");
-#endif
-
-#if HAVE_ZSTD
- test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
- text, sizeof(text), false);
- test_compress_decompress("ZSTD", compress_blob_zstd, decompress_blob_zstd,
- data, sizeof(data), true);
-
- test_decompress_startswith("ZSTD",
- compress_blob_zstd, decompress_startswith_zstd,
- text, sizeof(text), false);
- test_decompress_startswith("ZSTD",
- compress_blob_zstd, decompress_startswith_zstd,
- data, sizeof(data), true);
- test_decompress_startswith("ZSTD",
- compress_blob_zstd, decompress_startswith_zstd,
- huge, HUGE_SIZE, true);
-
- test_compress_stream("ZSTD", "zstdcat",
- compress_stream_zstd, decompress_stream_zstd, srcfile);
-
- test_decompress_startswith_short("ZSTD", compress_blob_zstd, decompress_startswith_zstd);
-#else
- log_info("/* ZSTD test skipped */");
-#endif
-
- return 0;
-#else
- log_info("/* XZ, LZ4 and ZSTD tests skipped */");
- return EXIT_TEST_SKIP;
-#endif
-}
projects / thirdparty / systemd.git / blobdiff