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ntpquery: Add a -s flag to make it adjust the time
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commit
f1a6884a51
Notes:
sideshowbarker
2024-07-19 02:51:57 +09:00
Author: https://github.com/nico Commit: https://github.com/SerenityOS/serenity/commit/f1a6884a516 Pull-request: https://github.com/SerenityOS/serenity/pull/3410 Reviewed-by: https://github.com/asynts Reviewed-by: https://github.com/awesomekling
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@ -100,24 +100,33 @@ static String format_ntp_timestamp(NtpTimestamp ntp_timestamp)
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int main(int argc, char** argv)
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{
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if (pledge("stdio inet dns", nullptr) < 0) {
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if (pledge("stdio inet dns settime", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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bool set_time = false;
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// FIXME: Change to serenityos.pool.ntp.org once https://manage.ntppool.org/manage/vendor/zone?a=km5a8h&id=vz-14154g is approved.
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const char* host = "time.google.com";
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Core::ArgsParser args_parser;
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args_parser.add_option(set_time, "Adjust system time (requires root)", "set", 's');
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args_parser.add_positional_argument(host, "NTP server", "host", Core::ArgsParser::Required::No);
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args_parser.parse(argc, argv);
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if (!set_time) {
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if (pledge("stdio inet dns", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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}
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auto* hostent = gethostbyname(host);
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if (!hostent) {
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fprintf(stderr, "Lookup failed for '%s'\n", host);
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return 1;
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}
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if (pledge("stdio inet", nullptr) < 0) {
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if (pledge(set_time ? "stdio inet settime" : "stdio inet", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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@ -180,6 +189,15 @@ int main(int argc, char** argv)
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NtpTimestamp transmit_timestamp = be64toh(packet.transmit_timestamp);
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NtpTimestamp destination_timestamp = ntp_timestamp_from_timeval(t);
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if (set_time) {
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// FIXME: Do all the time filtering described in 5905, or at least correct for time of flight.
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timeval t = timeval_from_ntp_timestamp(transmit_timestamp);
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if (settimeofday(&t, nullptr) < 0) {
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perror("settimeofday");
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return 1;
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}
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}
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printf("NTP response from %s:\n", inet_ntoa(peer_address.sin_addr));
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printf("Leap Information: %d\n", packet.li_vn_mode >> 6);
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printf("Version Number: %d\n", (packet.li_vn_mode >> 3) & 7);
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