1 files changed, 127 insertions, 0 deletions
diff --git a/src/timesync/timesyncd-conf.c b/src/timesync/timesyncd-conf.c
new file mode 100644
index 0000000..9c0b6f7
--- /dev/null
+++ b/src/timesync/timesyncd-conf.c
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "constants.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_config_file("timesyncd.conf", "Time\0",
+                                     config_item_perf_lookup, timesyncd_gperf_lookup,
+                                     CONFIG_PARSE_WARN, m);
+        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;
+}