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netprog.zip
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NETPROG.TAR
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inettime
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main.c
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C/C++ Source or Header
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1989-12-17
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1KB
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68 lines
/*
* This program is an example using the DARPA "Daytime Protocol"
* (see RFC 867 for the details) and the DARPA "Time Protocol"
* (see RFC 868 for the details).
*
* BSD systems provide a server for both of these services,
* using either UDP/IP or TCP/IP for each service.
* These services are provided by the "inetd" daemon under 4.3BSD.
*
* inettime [ -t ] [ -u ] hostname ...
*
* The -t option says use TCP, and the -u option says use UDP.
* If neither option is specified, both TCP and UDP are used.
*/
#include <stdio.h>
#define MAXHOSTNAMELEN 64
char hostname[MAXHOSTNAMELEN];
char *pname;
main(argc, argv)
int argc;
char **argv;
{
int dotcp, doudp;
char *s;
pname = argv[0];
dotcp = doudp = 0;
while (--argc > 0 && (*++argv)[0] == '-')
for (s = argv[0]+1; *s != '\0'; s++)
switch (*s) {
case 't':
dotcp = 1;
break;
case 'u':
doudp = 1;
break;
default:
err_quit("unknown command line option: %c", *s);
}
if (dotcp == 0 && doudp == 0)
dotcp = doudp = 1; /* default */
while (argc-- > 0) {
strcpy(hostname, *(argv++));
if (dotcp) {
tcp_daytime(hostname);
tcp_time(hostname);
}
if (doudp) {
udp_daytime(hostname);
udp_time(hostname);
}
}
exit(0);
}