system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-10-15 20:33:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

Lagom: Add ntpquery to lagom build

Browse source
This commit is contained in:
Nico Weber 2020-11-12 12:45:10 -05:00 committed by Andreas Kling
parent 81add73955
commit 5c2e8b6189
2 changed files with 22 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
Meta/Lagom/CMakeLists.txt
View file

@ -86,6 +86,10 @@ if (BUILD_LAGOM)
target_link_libraries(js_lagom stdc++)
target_link_libraries(js_lagom pthread)
add_executable(ntpquery_lagom ../../Userland/ntpquery.cpp)
set_target_properties(ntpquery_lagom PROPERTIES OUTPUT_NAME ntpquery)
target_link_libraries(ntpquery_lagom Lagom)
add_executable(test-js_lagom ../../Userland/test-js.cpp)
set_target_properties(test-js_lagom PROPERTIES OUTPUT_NAME test-js)
target_link_libraries(test-js_lagom Lagom)

27
Userland/ntpquery.cpp
View file

@ -24,11 +24,13 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define _GNU_SOURCE
#define _BSD_SOURCE
#define _DEFAULT_SOURCE
#include <AK/Random.h>
#include <LibCore/ArgsParser.h>
#include <arpa/inet.h>
#include <endian.h>
#include <inttypes.h>
#include <math.h>
#include <netdb.h>
#include <netinet/in.h>
@ -37,6 +39,7 @@
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <time.h>
// An NtpTimestamp is a 64-bit integer that's a 32.32 binary-fixed point number.
// The integral part in the upper 32 bits represents seconds since 1900-01-01.
@ -99,7 +102,7 @@ static String format_ntp_timestamp(NtpTimestamp ntp_timestamp)
gmtime_r(&t.tv_sec, &tm);
size_t written = strftime(buffer, sizeof(buffer), "%Y-%m-%dT%T.", &tm);
ASSERT(written == 20);
written += snprintf(buffer + written, sizeof(buffer) - written, "%06d", t.tv_usec);
written += snprintf(buffer + written, sizeof(buffer) - written, "%06d", (int)t.tv_usec);
ASSERT(written == 26);
buffer[written++] = 'Z';
buffer[written] = '\0';
@ -108,10 +111,12 @@ static String format_ntp_timestamp(NtpTimestamp ntp_timestamp)
int main(int argc, char** argv)
{
#ifdef __serenity__
if (pledge("stdio inet dns settime", nullptr) < 0) {
perror("pledge");
return 1;
}
#endif
bool adjust_time = false;
bool set_time = false;
@ -139,12 +144,14 @@ int main(int argc, char** argv)
return 1;
}
#ifdef __serenity__
if (!adjust_time && !set_time) {
if (pledge("stdio inet dns", nullptr) < 0) {
perror("pledge");
return 1;
}
}
#endif
auto* hostent = gethostbyname(host);
if (!hostent) {
@ -152,11 +159,13 @@ int main(int argc, char** argv)
return 1;
}
#ifdef __serenity__
if (pledge((adjust_time || set_time) ? "stdio inet settime" : "stdio inet", nullptr) < 0) {
perror("pledge");
return 1;
}
unveil(nullptr, nullptr);
#endif
int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (fd < 0) {
@ -243,7 +252,7 @@ int main(int argc, char** argv)
return 1;
}
if (packet.origin_timestamp != random_transmit_timestamp) {
fprintf(stderr, "expected %#016llx as origin timestamp, got %#016llx\n", random_transmit_timestamp, packet.origin_timestamp);
fprintf(stderr, "expected %#016" PRIx64 " as origin timestamp, got %#016" PRIx64 "\n", random_transmit_timestamp, packet.origin_timestamp);
return 1;
}
if (packet.transmit_timestamp == 0) {
@ -286,15 +295,15 @@ int main(int argc, char** argv)
}
printf("\n");
printf("Reference timestamp: %#016llx (%s)\n", be64toh(packet.reference_timestamp), format_ntp_timestamp(be64toh(packet.reference_timestamp)).characters());
printf("Origin timestamp: %#016llx (%s)\n", origin_timestamp, format_ntp_timestamp(origin_timestamp).characters());
printf("Receive timestamp: %#016llx (%s)\n", receive_timestamp, format_ntp_timestamp(receive_timestamp).characters());
printf("Transmit timestamp: %#016llx (%s)\n", transmit_timestamp, format_ntp_timestamp(transmit_timestamp).characters());
printf("Destination timestamp: %#016llx (%s)\n", destination_timestamp, format_ntp_timestamp(destination_timestamp).characters());
printf("Reference timestamp: %#016" PRIx64 " (%s)\n", be64toh(packet.reference_timestamp), format_ntp_timestamp(be64toh(packet.reference_timestamp)).characters());
printf("Origin timestamp: %#016" PRIx64 " (%s)\n", origin_timestamp, format_ntp_timestamp(origin_timestamp).characters());
printf("Receive timestamp: %#016" PRIx64 " (%s)\n", receive_timestamp, format_ntp_timestamp(receive_timestamp).characters());
printf("Transmit timestamp: %#016" PRIx64 " (%s)\n", transmit_timestamp, format_ntp_timestamp(transmit_timestamp).characters());
printf("Destination timestamp: %#016" PRIx64 " (%s)\n", destination_timestamp, format_ntp_timestamp(destination_timestamp).characters());
// When the system isn't under load, user-space t and packet_t are identical. If a shell with `yes` is running, it can be as high as 30ms in this program,
// which gets user-space time immediately after the recvmsg() call. In programs that have an event loop reading from multiple sockets, it could be higher.
printf("Receive latency: %lld.%06d s\n", kernel_to_userspace_latency.tv_sec, kernel_to_userspace_latency.tv_usec);
printf("Receive latency: %" PRId64 ".%06d s\n", kernel_to_userspace_latency.tv_sec, (int)kernel_to_userspace_latency.tv_usec);
}
// Parts of the "Clock Filter" computations, https://tools.ietf.org/html/rfc5905#section-10