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
131
132
133
134
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include "fd-util.h"
#include "io-util.h"
#include "journal-file.h"
#include "journal-verify.h"
#include "log.h"
#include "rm-rf.h"
#include "terminal-util.h"
#include "tests.h"
#include "util.h"
#define N_ENTRIES 6000
#define RANDOM_RANGE 77
static void bit_toggle(const char *fn, uint64_t p) {
uint8_t b;
ssize_t r;
int fd;
fd = open(fn, O_RDWR|O_CLOEXEC);
assert_se(fd >= 0);
r = pread(fd, &b, 1, p/8);
assert_se(r == 1);
b ^= 1 << (p % 8);
r = pwrite(fd, &b, 1, p/8);
assert_se(r == 1);
safe_close(fd);
}
static int raw_verify(const char *fn, const char *verification_key) {
JournalFile *f;
int r;
r = journal_file_open(-1, fn, O_RDONLY, 0666, true, (uint64_t) -1, !!verification_key, NULL, NULL, NULL, NULL, &f);
if (r < 0)
return r;
r = journal_file_verify(f, verification_key, NULL, NULL, NULL, false);
(void) journal_file_close(f);
return r;
}
int main(int argc, char *argv[]) {
char t[] = "/tmp/journal-XXXXXX";
unsigned n;
JournalFile *f;
const char *verification_key = argv[1];
usec_t from = 0, to = 0, total = 0;
char a[FORMAT_TIMESTAMP_MAX];
char b[FORMAT_TIMESTAMP_MAX];
char c[FORMAT_TIMESPAN_MAX];
struct stat st;
uint64_t p;
/* journal_file_open requires a valid machine id */
if (access("/etc/machine-id", F_OK) != 0)
return log_tests_skipped("/etc/machine-id not found");
test_setup_logging(LOG_DEBUG);
assert_se(mkdtemp(t));
assert_se(chdir(t) >= 0);
log_info("Generating...");
assert_se(journal_file_open(-1, "test.journal", O_RDWR|O_CREAT, 0666, true, (uint64_t) -1, !!verification_key, NULL, NULL, NULL, NULL, &f) == 0);
for (n = 0; n < N_ENTRIES; n++) {
struct iovec iovec;
struct dual_timestamp ts;
char *test;
dual_timestamp_get(&ts);
assert_se(asprintf(&test, "RANDOM=%lu", random() % RANDOM_RANGE));
iovec = IOVEC_MAKE_STRING(test);
assert_se(journal_file_append_entry(f, &ts, NULL, &iovec, 1, NULL, NULL, NULL) == 0);
free(test);
}
(void) journal_file_close(f);
log_info("Verifying...");
assert_se(journal_file_open(-1, "test.journal", O_RDONLY, 0666, true, (uint64_t) -1, !!verification_key, NULL, NULL, NULL, NULL, &f) == 0);
/* journal_file_print_header(f); */
journal_file_dump(f);
assert_se(journal_file_verify(f, verification_key, &from, &to, &total, true) >= 0);
if (verification_key && JOURNAL_HEADER_SEALED(f->header))
log_info("=> Validated from %s to %s, %s missing",
format_timestamp(a, sizeof(a), from),
format_timestamp(b, sizeof(b), to),
format_timespan(c, sizeof(c), total > to ? total - to : 0, 0));
(void) journal_file_close(f);
if (verification_key) {
log_info("Toggling bits...");
assert_se(stat("test.journal", &st) >= 0);
for (p = 38448*8+0; p < ((uint64_t) st.st_size * 8); p ++) {
bit_toggle("test.journal", p);
log_info("[ %"PRIu64"+%"PRIu64"]", p / 8, p % 8);
if (raw_verify("test.journal", verification_key) >= 0)
log_notice(ANSI_HIGHLIGHT_RED ">>>> %"PRIu64" (bit %"PRIu64") can be toggled without detection." ANSI_NORMAL, p / 8, p % 8);
bit_toggle("test.journal", p);
}
}
log_info("Exiting...");
assert_se(rm_rf(t, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
return 0;
}
|
