return manager_connect(m);
}
- if (NTP_FIELD_LEAP(ntpmsg.field) == NTP_LEAP_NOTINSYNC) {
+ if (NTP_FIELD_LEAP(ntpmsg.field) == NTP_LEAP_NOTINSYNC ||
+ ntpmsg.stratum == 0 || ntpmsg.stratum >= 16) {
log_debug("Server is not synchronized. Disconnecting.");
return manager_connect(m);
}
return manager_send_request(m);
}
-static void server_name_flush_addresses(ServerName *n) {
- ServerAddress *a;
+void manager_set_server_name(Manager *m, ServerName *n) {
+ assert(m);
- assert(n);
+ if (m->current_server_name == n)
+ return;
- while ((a = n->addresses)) {
- LIST_REMOVE(addresses, n->addresses, a);
- free(a);
- }
-}
+ m->current_server_name = n;
+ m->current_server_address = NULL;
+
+ manager_disconnect(m);
-void manager_flush_names(Manager *m) {
- ServerName *n;
+ if (n)
+ log_debug("Selected server %s.", n->string);
+}
+void manager_set_server_address(Manager *m, ServerAddress *a) {
assert(m);
- while ((n = m->servers)) {
- LIST_REMOVE(names, m->servers, n);
- free(n->string);
- server_name_flush_addresses(n);
- free(n);
+ if (m->current_server_address == a)
+ return;
+
+ m->current_server_name = a ? a->name : NULL;
+ m->current_server_address = a;
+
+ manager_disconnect(m);
+
+ if (a) {
+ _cleanup_free_ char *pretty = NULL;
+ server_address_pretty(a, &pretty);
+ log_debug("Selected address %s of server %s.", strna(pretty), a->name->string);
}
}
static int manager_resolve_handler(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata) {
Manager *m = userdata;
- ServerAddress *a, *last = NULL;
+ int r;
assert(q);
assert(m);
return manager_connect(m);
}
- server_name_flush_addresses(m->current_server_name);
-
for (; ai; ai = ai->ai_next) {
_cleanup_free_ char *pretty = NULL;
+ ServerAddress *a;
assert(ai->ai_addr);
assert(ai->ai_addrlen >= offsetof(struct sockaddr, sa_data));
- assert(ai->ai_addrlen <= sizeof(union sockaddr_union));
if (!IN_SET(ai->ai_addr->sa_family, AF_INET, AF_INET6)) {
log_warning("Unsuitable address protocol for %s", m->current_server_name->string);
continue;
}
- a = new0(ServerAddress, 1);
- if (!a)
- return log_oom();
-
- memcpy(&a->sockaddr, ai->ai_addr, ai->ai_addrlen);
- a->socklen = ai->ai_addrlen;
-
- LIST_INSERT_AFTER(addresses, m->current_server_name->addresses, last, a);
- last = a;
+ r = server_address_new(m->current_server_name, &a, (const union sockaddr_union*) ai->ai_addr, ai->ai_addrlen);
+ if (r < 0) {
+ log_error("Failed to add server address: %s", strerror(-r));
+ return r;
+ }
- sockaddr_pretty(&a->sockaddr.sa, a->socklen, true, &pretty);
+ server_address_pretty(a, &pretty);
log_debug("Resolved address %s for %s.", pretty, m->current_server_name->string);
}
return manager_connect(m);
}
- m->current_server_address = m->current_server_name->addresses;
+ manager_set_server_address(m, m->current_server_name->addresses);
return manager_begin(m);
}
-static int manager_retry(sd_event_source *source, usec_t usec, void *userdata) {
+static int manager_retry_connect(sd_event_source *source, usec_t usec, void *userdata) {
Manager *m = userdata;
assert(m);
}
int manager_connect(Manager *m) {
-
- struct addrinfo hints = {
- .ai_flags = AI_NUMERICSERV|AI_ADDRCONFIG,
- .ai_socktype = SOCK_DGRAM,
- };
int r;
assert(m);
if (!ratelimit_test(&m->ratelimit)) {
log_debug("Slowing down attempts to contact servers.");
- r = sd_event_add_time(m->event, &m->event_retry, clock_boottime_or_monotonic(), now(clock_boottime_or_monotonic()) + RETRY_USEC, 0, manager_retry, m);
+ r = sd_event_add_time(m->event, &m->event_retry, clock_boottime_or_monotonic(), now(clock_boottime_or_monotonic()) + RETRY_USEC, 0, manager_retry_connect, m);
if (r < 0) {
log_error("Failed to create retry timer: %s", strerror(-r));
return r;
/* If we already are operating on some address, switch to the
* next one. */
if (m->current_server_address && m->current_server_address->addresses_next)
- m->current_server_address = m->current_server_address->addresses_next;
+ manager_set_server_address(m, m->current_server_address->addresses_next);
else {
- /* Hmm, we are through all addresses, let's look for the next host instead */
- m->current_server_address = NULL;
+ struct addrinfo hints = {
+ .ai_flags = AI_NUMERICSERV|AI_ADDRCONFIG,
+ .ai_socktype = SOCK_DGRAM,
+ };
+ /* Hmm, we are through all addresses, let's look for the next host instead */
if (m->current_server_name && m->current_server_name->names_next)
- m->current_server_name = m->current_server_name->names_next;
+ manager_set_server_name(m, m->current_server_name->names_next);
else {
- if (!m->servers) {
- m->current_server_name = NULL;
+ ServerName *f;
+
+ /* Our current server name list is exhausted,
+ * let's find the next one to iterate. First
+ * we try the system list, then the link list.
+ * After having processed the link list we
+ * jump back to the system list. However, if
+ * both lists are empty, we change to the
+ * fallback list. */
+ if (!m->current_server_name || m->current_server_name->type == SERVER_LINK) {
+ f = m->system_servers;
+ if (!f)
+ f = m->link_servers;
+ } else {
+ f = m->link_servers;
+ if (!f)
+ f = m->system_servers;
+ }
+
+ if (!f)
+ f = m->fallback_servers;
+
+ if (!f) {
+ manager_set_server_name(m, NULL);
log_debug("No server found.");
return 0;
}
- m->current_server_name = m->servers;
+ manager_set_server_name(m, f);
}
/* Tell the resolver to reread /etc/resolv.conf, in
* case it changed. */
res_init();
+ /* Flush out any previously resolved addresses */
+ server_name_flush_addresses(m->current_server_name);
+
+ log_debug("Resolving %s...", m->current_server_name->string);
+
r = sd_resolve_getaddrinfo(m->resolve, &m->resolve_query, m->current_server_name->string, "123", &hints, manager_resolve_handler, m);
if (r < 0) {
log_error("Failed to create resolver: %s", strerror(-r));
return 1;
}
-static int manager_add_server(Manager *m, const char *server) {
- ServerName *n, *tail;
-
- assert(m);
- assert(server);
-
- n = new0(ServerName, 1);
- if (!n)
- return -ENOMEM;
-
- n->string = strdup(server);
- if (!n->string) {
- free(n);
- return -ENOMEM;
- }
-
- LIST_FIND_TAIL(names, m->servers, tail);
- LIST_INSERT_AFTER(names, m->servers, tail, n);
-
- return 0;
-}
-
-int manager_add_server_string(Manager *m, const char *string) {
- const char *word, *state;
- size_t l;
- int r;
-
- assert(m);
- assert(string);
-
- FOREACH_WORD_QUOTED(word, l, string, state) {
- char t[l+1];
-
- memcpy(t, word, l);
- t[l] = 0;
-
- r = manager_add_server(m, t);
- if (r < 0)
- log_error("Failed to add server %s to configuration, ignoring: %s", t, strerror(-r));
- }
- if (!isempty(state))
- log_warning("Trailing garbage at the end of server list, ignoring.");
-
- return 0;
-}
-
void manager_disconnect(Manager *m) {
assert(m);
sd_notifyf(false, "STATUS=Idle.");
}
+void manager_flush_server_names(Manager *m, ServerType t) {
+ assert(m);
+
+ if (t == SERVER_SYSTEM)
+ while (m->system_servers)
+ server_name_free(m->system_servers);
+
+ if (t == SERVER_LINK)
+ while (m->link_servers)
+ server_name_free(m->link_servers);
+
+ if (t == SERVER_FALLBACK)
+ while (m->fallback_servers)
+ server_name_free(m->fallback_servers);
+}
void manager_free(Manager *m) {
if (!m)
return;
manager_disconnect(m);
- manager_flush_names(m);
+ manager_flush_server_names(m, SERVER_SYSTEM);
+ manager_flush_server_names(m, SERVER_LINK);
+ manager_flush_server_names(m, SERVER_FALLBACK);
sd_event_source_unref(m->event_retry);
free(m);
}
-int manager_parse_config_file(Manager *m) {
+static int manager_network_read_link_servers(Manager *m) {
+ _cleanup_strv_free_ char **ntp = NULL;
+ ServerName *n, *nx;
+ char **i;
+ int r;
+
assert(m);
- return config_parse(NULL, "/etc/systemd/timesyncd.conf", NULL,
- "Time\0",
- config_item_perf_lookup, timesyncd_gperf_lookup,
- false, false, true, m);
+ r = sd_network_get_ntp(&ntp);
+ if (r < 0)
+ goto clear;
+
+ LIST_FOREACH(names, n, m->link_servers)
+ n->marked = true;
+
+ STRV_FOREACH(i, ntp) {
+ bool found = false;
+
+ LIST_FOREACH(names, n, m->link_servers)
+ if (streq(n->string, *i)) {
+ n->marked = false;
+ found = true;
+ break;
+ }
+
+ if (!found) {
+ r = server_name_new(m, NULL, SERVER_LINK, *i);
+ if (r < 0)
+ goto clear;
+ }
+ }
+
+ LIST_FOREACH_SAFE(names, n, nx, m->link_servers)
+ if (n->marked)
+ server_name_free(n);
+
+ return 0;
+
+clear:
+ manager_flush_server_names(m, SERVER_LINK);
+ return r;
}
static int manager_network_event_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
sd_network_monitor_flush(m->network_monitor);
+ manager_network_read_link_servers(m);
+
/* check if the machine is online */
online = network_is_online();
/* check if the client is currently connected */
- connected = m->server_socket >= 0;
+ connected = m->server_socket >= 0 || m->resolve_query;
if (connected && !online) {
log_info("No network connectivity, watching for changes.");
RATELIMIT_INIT(m->ratelimit, RATELIMIT_INTERVAL_USEC, RATELIMIT_BURST);
- r = manager_add_server_string(m, NTP_SERVERS);
+ r = manager_parse_server_string(m, SERVER_FALLBACK, NTP_SERVERS);
if (r < 0)
return r;
if (r < 0)
return r;
+ manager_network_read_link_servers(m);
+
*ret = m;
m = NULL;
~ianmdlvl / elogind.git / blobdiff