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/*
* $Id$
*
* DEBUG: section 00 Announcement Server
* AUTHOR: Harvest Derived
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
*/
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <signal.h>
#include "config.h"
#define RECV_BUF_SIZE 8192
/*
* This program must be run from inetd. First add something like this
* to /etc/services:
*
* cached_announce 3131/udp # cache announcements
*
* And then add something like this to /etc/inetd/conf:
*
* cached_announce dgram udp wait cached /tmp/recv-announce recv-announce /tmp/recv-announce.log
*
*
* A single instance of this process will continue to handle incoming
* requests. If it dies, or is killed, inetd should restart it when the
* next message arrives.
*
*/
/*
* usage: recv-announce logfile
*/
static void
sig_handle(int)
{
fflush(stdout);
close(2);
close(1);
close(0);
exit(0);
}
int
main(int argc, char *argv[])
{
char buf[RECV_BUF_SIZE];
struct sockaddr_in R;
socklen_t len;
struct hostent *hp = NULL;
char logfile[BUFSIZ];
char ip[4];
for (len = 0; len < 32; len++) {
signal(len, sig_handle);
}
if (argc > 1)
strcpy(logfile, argv[1]);
else
strcpy(logfile, "/tmp/recv-announce.log");
close(1);
if (open(logfile, O_WRONLY | O_CREAT | O_APPEND, 0660) < 0) {
perror(logfile);
exit(1);
}
close(2);
dup(1);
IPAddress ipa;
chat tmp[MAX_HOSTNAMELEN];
for (;;) {
memset(buf, '\0', RECV_BUF_SIZE);
memset(&R, '\0', len = sizeof(R));
if (recvfrom(0, buf, RECV_BUF_SIZE, 0, (sockaddr *)&R, &len) < 0) {
perror("recv");
exit(2);
}
xmemcpy(ip, &R.sin_addr.s_addr, 4);
hp = gethostbyaddr(ip, 4, AF_INET);
ipa = R.sin_addr;
printf("==============================================================================\n");
printf("Received from %s [%s]\n",
ipa.NtoA(tmp,MAX_HOSTNAMELEN),
(hp && hp->h_name) ? hp->h_name : "Unknown");
fputs(buf, stdout);
fflush(stdout);
}
return 0;
}
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