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/*
mtr -- a network diagnostic tool
Copyright (C) 1997,1998 Matt Kimball
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <sys/types.h>
#include <stdio.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <string.h>
#include "report.h"
#include "net.h"
extern int dns;
void report_open() {
printf("%-38s LOSS RCVD SENT BEST AVG WORST\n", "HOST");
fflush(stdout);
}
void report_close() {
int at, max, addr;
int haddr;
char name[81];
struct hostent *host;
max = net_max();
for(at = 0; at < max; at++) {
addr = net_addr(at);
strcpy(name, "");
if(addr == 0) {
sprintf(name, "???");
} else {
haddr = htonl(addr);
host = dns?gethostbyaddr((char *)&haddr, sizeof(int), AF_INET):NULL;
if (host != NULL) {
strncpy(name, host->h_name, 80);
name[80] = 0;
} else {
sprintf(name, "%d.%d.%d.%d", (addr >> 24) & 0xff, (addr >> 16) & 0xff,
(addr >> 8) & 0xff, addr & 0xff);
}
}
/* Coding tip:
NEVER EVER use a format like "%6d%6d%6d". This will nicely
format your three numbers in 18 spaces just like " %5d %5d %5d"
and save you three bytes of static string space. However, when
the numbers suddenly become a bit larger than you expected
you'll end up with unexpected results: just one huge number
instead of three separate numbers. This especially matters if
the reader of the info is a program and not human. */
printf("%-38s %4d%% %5d %4d %7.2f %7.2f %7.2f\n", name,
net_percent(at),
net_returned(at), net_xmit(at),
net_best(at)/1000.0, net_avg(at)/1000.0, net_worst(at)/1000.0);
}
}
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