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/***
This file is part of systemd
Copyright 2014 Ronny Chevalier
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "compress.h"
#include "util.h"
#include "macro.h"
static void test_compress_uncompress(void) {
char text[] = "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
char compressed[512];
uint64_t csize = 512;
uint64_t usize = 0;
_cleanup_free_ char *uncompressed = NULL;
assert_se(compress_blob(text, sizeof(text), compressed, &csize));
assert_se(uncompress_blob(compressed,
csize,
(void **) &uncompressed,
&usize, &csize, 0));
assert_se(uncompressed);
assert_se(streq(uncompressed, text));
assert_se(!uncompress_blob("garbage",
7,
(void **) &uncompressed,
&usize, &csize, 0));
}
static void test_uncompress_startswith(void) {
char text[] = "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
char compressed[512];
uint64_t csize = 512;
uint64_t usize = 0;
_cleanup_free_ char *uncompressed = NULL;
assert_se(compress_blob(text, sizeof(text), compressed, &csize));
assert_se(uncompress_startswith(compressed,
csize,
(void **) &uncompressed,
&usize,
"foofoofoofoo", 12, ' '));
assert_se(!uncompress_startswith(compressed,
csize,
(void **) &uncompressed,
&usize,
"foofoofoofoo", 12, 'w'));
assert_se(!uncompress_startswith(compressed,
csize,
(void **) &uncompressed,
&usize,
"barbarbar", 9, ' '));
}
static void test_compress_stream(const char *srcfile) {
_cleanup_close_ int src = -1, dst = -1, dst2 = -1;
char pattern[] = "/tmp/systemd-test.xz.XXXXXX",
pattern2[] = "/tmp/systemd-test.xz.XXXXXX";
int r;
_cleanup_free_ char *cmd, *cmd2;
struct stat st = {};
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, O_RDWR|O_CLOEXEC)) >= 0);
r = compress_stream(src, dst, 1, -1);
assert(r == 0);
assert_se(asprintf(&cmd, "xzcat %s | diff %s -", pattern, srcfile) > 0);
assert_se(system(cmd) == 0);
log_debug("/* test decompression */");
assert_se((dst2 = mkostemp_safe(pattern2, O_RDWR|O_CLOEXEC)) >= 0);
assert_se(stat(srcfile, &st) == 0);
assert_se(lseek(dst, 0, SEEK_SET) == 0);
r = decompress_stream(dst, dst2, st.st_size);
assert(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_stream(dst, dst2, st.st_size);
assert(r == -EBADMSG);
assert_se(lseek(dst, 0, SEEK_SET) == 0);
assert_se(lseek(dst2, 0, SEEK_SET) == 0);
r = decompress_stream(dst, dst2, st.st_size - 1);
assert(r == -E2BIG);
assert_se(unlink(pattern) == 0);
assert_se(unlink(pattern2) == 0);
}
int main(int argc, char *argv[]) {
log_set_max_level(LOG_DEBUG);
test_compress_uncompress();
test_uncompress_startswith();
test_compress_stream(argv[0]);
return 0;
}
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