Wrote my first c++ program. Though it doesn’t answer the question I had, it does provide some nice information.
Here is the code:
/** Project Name: ntp_project
* Written By: sparkz_alot
* Date: 19 Jun 2014
* Version: 1.0.0
*
* Description: a simple c++11 program to provide information about the Network Time Protocol (ntp) using the
* ntpq and ntpdc query commands.
*
* Written using Code::Blocks v13.12 IDE and tested on openSUSE 13.1.
*/
#include <iostream>
using namespace std;
int main()
{
cout << "The results of the ntpq -pn (-p: list of peers known to server
";
cout << "-n: use numerical rather than canonical name) and a straight system call
";
cout << endl;
system("ntpq -pn");
cout << endl;
// or using popen. Note: 'type' is r(read) or w(write), cant't be both
cout << "Output using popen and ntpq
";
FILE *pipe_fp;
char buff[512];
// Open pipe and check for errors
if ((pipe_fp = popen("ntpq -pn" , "r")) == NULL)
{
perror("popen");
exit(1);
}
while(fgets(buff, sizeof(buff), pipe_fp)!=NULL)
{
cout << buff;
}
// Close the pipe
pclose(pipe_fp);
cout << endl;
// Now lets get some info about the server we are currently syncing to
cout << "Getting system info of current ntp server using ntpdc -sysinfo
";
cout << endl;
if ((pipe_fp = popen("ntpdc -c sysinfo" , "r")) == NULL)
{
perror("popen");
exit(1);
}
while(fgets(buff, sizeof(buff), pipe_fp)!=NULL)
{
cout << buff;
}
// Close the pipe
pclose(pipe_fp);
cout << endl;
// Say good night Gracie
cout << "\a tata" << endl;
return 0;
}
And here is the output:
The results of the ntpq -pn (-p: list of peers known to server -n: use numerical rather than canonical name) and a straight system call
remote refid st t when poll reach delay offset jitter
==============================================================================
-4.53.160.75 64.113.32.5 2 u 675 1024 377 57.563 -9.733 3.646
+50.7.64.4 206.108.0.132 2 u 370 1024 377 48.876 -0.282 2.890
*66.228.59.187 200.98.196.212 2 u 678 1024 367 26.619 -2.186 1.712
+66.7.96.1 140.142.16.34 2 u 613 1024 377 116.687 -8.288 2.773
Output using popen and ntpq
remote refid st t when poll reach delay offset jitter
==============================================================================
-4.53.160.75 64.113.32.5 2 u 675 1024 377 57.563 -9.733 3.646
+50.7.64.4 206.108.0.132 2 u 370 1024 377 48.876 -0.282 2.890
*66.228.59.187 200.98.196.212 2 u 678 1024 367 26.619 -2.186 1.712
+66.7.96.1 140.142.16.34 2 u 613 1024 377 116.687 -8.288 2.773
Getting system info of current ntp server using ntpdc -sysinfo
system peer: fairy.mattnordhoff.net
system peer mode: client
leap indicator: 00
stratum: 3
precision: -22
root distance: 0.05386 s
root dispersion: 0.10902 s
reference ID: [66.228.59.187]
reference time: d74d8d32.6dcf68bd Thu, Jun 19 2014 12:24:18.428
system flags: auth monitor ntp kernel stats
jitter: 0.005585 s
stability: 0.000 ppm
broadcastdelay: 0.000000 s
authdelay: 0.000000 s
tata
