summaryrefslogtreecommitdiff
path: root/src/timesync/timesyncd-conf.c
blob: 21fe7daec43c466bde0d1d4da648ceff1dab04cd (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
131
132
/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include "alloc-util.h"
#include "def.h"
#include "dns-domain.h"
#include "extract-word.h"
#include "string-util.h"
#include "timesyncd-conf.h"
#include "timesyncd-manager.h"
#include "timesyncd-server.h"

int manager_parse_server_string(Manager *m, ServerType type, const char *string) {
        ServerName *first;
        int r;

        assert(m);
        assert(string);

        first = type == SERVER_FALLBACK ? m->fallback_servers : m->system_servers;

        if (type == SERVER_FALLBACK)
                 m->have_fallbacks = true;

        for (;;) {
                _cleanup_free_ char *word = NULL;
                bool found = false;

                r = extract_first_word(&string, &word, NULL, 0);
                if (r < 0)
                        return log_error_errno(r, "Failed to parse timesyncd server syntax \"%s\": %m", string);
                if (r == 0)
                        break;

                r = dns_name_is_valid_or_address(word);
                if (r < 0)
                        return log_error_errno(r, "Failed to check validity of NTP server name or address '%s': %m", word);
                if (r == 0) {
                        log_error("Invalid NTP server name or address, ignoring: %s", word);
                        continue;
                }

                /* Filter out duplicates */
                LIST_FOREACH(names, n, first)
                        if (streq_ptr(n->string, word)) {
                                found = true;
                                break;
                        }

                if (found)
                        continue;

                r = server_name_new(m, NULL, type, word);
                if (r < 0)
                        return r;
        }

        return 0;
}

int manager_parse_fallback_string(Manager *m, const char *string) {
        if (m->have_fallbacks)
                return 0;

        return manager_parse_server_string(m, SERVER_FALLBACK, string);
}

int config_parse_servers(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        Manager *m = userdata;
        int r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);

        if (isempty(rvalue))
                manager_flush_server_names(m, ltype);
        else {
                r = manager_parse_server_string(m, ltype, rvalue);
                if (r < 0) {
                        log_syntax(unit, LOG_WARNING, filename, line, r,
                                   "Failed to parse NTP server string '%s', ignoring: %m", rvalue);
                        return 0;
                }
        }

        return 0;
}

int manager_parse_config_file(Manager *m) {
        int r;

        assert(m);

        r = config_parse_many_nulstr(
                        PKGSYSCONFDIR "/timesyncd.conf",
                        CONF_PATHS_NULSTR("systemd/timesyncd.conf.d"),
                        "Time\0",
                        config_item_perf_lookup, timesyncd_gperf_lookup,
                        CONFIG_PARSE_WARN,
                        m,
                        NULL);
        if (r < 0)
                return r;

        if (m->poll_interval_min_usec < 16 * USEC_PER_SEC) {
                log_warning("Invalid PollIntervalMinSec=. Using default value.");
                m->poll_interval_min_usec = NTP_POLL_INTERVAL_MIN_USEC;
        }

        if (m->poll_interval_max_usec < m->poll_interval_min_usec) {
                log_warning("PollIntervalMaxSec= is smaller than PollIntervalMinSec=. Using default value.");
                m->poll_interval_max_usec = MAX(NTP_POLL_INTERVAL_MAX_USEC, m->poll_interval_min_usec * 32);
        }

        if (m->connection_retry_usec < 1 * USEC_PER_SEC) {
                log_warning("Invalid ConnectionRetrySec=. Using default value.");
                m->connection_retry_usec = DEFAULT_CONNECTION_RETRY_USEC;
        }

        return r;
}