summaryrefslogtreecommitdiff
path: root/src/journal/test-compress.c
blob: b098ef93a850c02bb5c3a5a7c8e42a40874c82c9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/***
  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);
        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;
}