| /* 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; |
| } |
