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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/capability.h>
#include "sd-bus.h"
#include "alloc-util.h"
#include "bus-get-properties.h"
#include "bus-internal.h"
#include "bus-log-control-api.h"
#include "bus-polkit.h"
#include "bus-protocol.h"
#include "bus-util.h"
#include "dns-domain.h"
#include "in-addr-util.h"
#include "log.h"
#include "macro.h"
#include "strv.h"
#include "time-util.h"
#include "timesyncd-bus.h"
#include "user-util.h"
static int property_get_servers(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
ServerName **s = ASSERT_PTR(userdata);
int r;
assert(bus);
assert(reply);
r = sd_bus_message_open_container(reply, 'a', "s");
if (r < 0)
return r;
LIST_FOREACH(names, p, *s) {
r = sd_bus_message_append(reply, "s", p->string);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int method_set_runtime_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **msg_names = NULL;
Manager *m = ASSERT_PTR(userdata);
int r;
assert(message);
r = sd_bus_message_read_strv(message, &msg_names);
if (r < 0)
return r;
STRV_FOREACH(name, msg_names) {
r = dns_name_is_valid_or_address(*name);
if (r < 0)
return log_error_errno(r, "Failed to check validity of NTP server name or address '%s': %m", *name);
if (r == 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid NTP server name or address, refusing: %s", *name);
}
r = bus_verify_polkit_async(message, CAP_NET_ADMIN,
"org.freedesktop.timesync1.set-runtime-servers",
NULL, true, UID_INVALID,
&m->polkit_registry, error);
if (r < 0)
return r;
if (r == 0)
/* Polkit will call us back */
return 1;
manager_flush_runtime_servers(m);
STRV_FOREACH(name, msg_names) {
r = server_name_new(m, NULL, SERVER_RUNTIME, *name);
if (r < 0) {
manager_flush_runtime_servers(m);
return log_error_errno(r, "Failed to add runtime server '%s': %m", *name);
}
}
m->exhausted_servers = true;
manager_set_server_name(m, NULL);
(void) manager_connect(m);
return sd_bus_reply_method_return(message, NULL);
}
static int property_get_current_server_name(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
ServerName **s = ASSERT_PTR(userdata);
assert(bus);
assert(reply);
return sd_bus_message_append(reply, "s", *s ? (*s)->string : NULL);
}
static int property_get_current_server_address(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
ServerAddress *a;
int r;
assert(bus);
assert(reply);
assert(userdata);
a = *(ServerAddress **) userdata;
if (!a)
return sd_bus_message_append(reply, "(iay)", AF_UNSPEC, 0);
assert(IN_SET(a->sockaddr.sa.sa_family, AF_INET, AF_INET6));
r = sd_bus_message_open_container(reply, 'r', "iay");
if (r < 0)
return r;
r = sd_bus_message_append(reply, "i", a->sockaddr.sa.sa_family);
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y',
a->sockaddr.sa.sa_family == AF_INET ? (void*) &a->sockaddr.in.sin_addr : (void*) &a->sockaddr.in6.sin6_addr,
FAMILY_ADDRESS_SIZE(a->sockaddr.sa.sa_family));
if (r < 0)
return r;
return sd_bus_message_close_container(reply);
}
static usec_t ntp_ts_short_to_usec(const struct ntp_ts_short *ts) {
return be16toh(ts->sec) * USEC_PER_SEC + (be16toh(ts->frac) * USEC_PER_SEC) / (usec_t) 0x10000ULL;
}
static usec_t ntp_ts_to_usec(const struct ntp_ts *ts) {
return (be32toh(ts->sec) - OFFSET_1900_1970) * USEC_PER_SEC + (be32toh(ts->frac) * USEC_PER_SEC) / (usec_t) 0x100000000ULL;
}
static int property_get_ntp_message(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = ASSERT_PTR(userdata);
int r;
assert(reply);
r = sd_bus_message_open_container(reply, 'r', "uuuuittayttttbtt");
if (r < 0)
return r;
r = sd_bus_message_append(reply, "uuuuitt",
NTP_FIELD_LEAP(m->ntpmsg.field),
NTP_FIELD_VERSION(m->ntpmsg.field),
NTP_FIELD_MODE(m->ntpmsg.field),
m->ntpmsg.stratum,
m->ntpmsg.precision,
ntp_ts_short_to_usec(&m->ntpmsg.root_delay),
ntp_ts_short_to_usec(&m->ntpmsg.root_dispersion));
if (r < 0)
return r;
r = sd_bus_message_append_array(reply, 'y', m->ntpmsg.refid, 4);
if (r < 0)
return r;
r = sd_bus_message_append(reply, "ttttbtt",
timespec_load(&m->origin_time),
ntp_ts_to_usec(&m->ntpmsg.recv_time),
ntp_ts_to_usec(&m->ntpmsg.trans_time),
timespec_load(&m->dest_time),
m->spike,
m->packet_count,
(usec_t) (m->samples_jitter * USEC_PER_SEC));
if (r < 0)
return r;
return sd_bus_message_close_container(reply);
}
static const sd_bus_vtable manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("LinkNTPServers", "as", property_get_servers, offsetof(Manager, link_servers), 0),
SD_BUS_PROPERTY("SystemNTPServers", "as", property_get_servers, offsetof(Manager, system_servers), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RuntimeNTPServers", "as", property_get_servers, offsetof(Manager, runtime_servers), 0),
SD_BUS_PROPERTY("FallbackNTPServers", "as", property_get_servers, offsetof(Manager, fallback_servers), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("ServerName", "s", property_get_current_server_name, offsetof(Manager, current_server_name), 0),
SD_BUS_PROPERTY("ServerAddress", "(iay)", property_get_current_server_address, offsetof(Manager, current_server_address), 0),
SD_BUS_PROPERTY("RootDistanceMaxUSec", "t", bus_property_get_usec, offsetof(Manager, root_distance_max_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PollIntervalMinUSec", "t", bus_property_get_usec, offsetof(Manager, poll_interval_min_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PollIntervalMaxUSec", "t", bus_property_get_usec, offsetof(Manager, poll_interval_max_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PollIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, poll_interval_usec), 0),
SD_BUS_PROPERTY("NTPMessage", "(uuuuittayttttbtt)", property_get_ntp_message, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("Frequency", "x", NULL, offsetof(Manager, drift_freq), 0),
SD_BUS_METHOD_WITH_ARGS("SetRuntimeNTPServers",
SD_BUS_ARGS("as", runtime_servers),
SD_BUS_NO_RESULT,
method_set_runtime_servers,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_VTABLE_END
};
int manager_connect_bus(Manager *m) {
int r;
assert(m);
if (m->bus)
return 0;
r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-timesync");
if (r < 0)
return log_error_errno(r, "Failed to connect to bus: %m");
r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/timesync1", "org.freedesktop.timesync1.Manager", manager_vtable, m);
if (r < 0)
return log_error_errno(r, "Failed to add manager object vtable: %m");
r = bus_log_control_api_register(m->bus);
if (r < 0)
return r;
r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.timesync1", 0, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to request name: %m");
r = sd_bus_attach_event(m->bus, m->event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
return 0;
}
|
