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/* cvm/module_udp.c - UDP CVM server module main routine
* Copyright (C) 2001 Bruce Guenter <bruceg@em.ca>
*
* 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 02111-1307 USA
*/
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "socket/socket.h"
#include "module.h"
static int sock;
static ipv4addr ip;
static unsigned short port;
static int read_input(void)
{
inbuflen = socket_recv4(sock, inbuffer, BUFSIZE, ip, &port);
if (inbuflen == (unsigned)-1) return CVME_IO;
return 0;
}
static void write_output(void)
{
socket_send4(sock, outbuffer, outbuflen, ip, port);
}
static void exitfn()
{
log_shutdown();
exit(0);
}
static const char usagestr[] =
"usage: cvm-module-udp IP PORT\n";
static void usage(void)
{
write(2, usagestr, sizeof usagestr);
exit(1);
}
int main(int argc, char** argv)
{
int code;
struct hostent* he;
char* tmp;
if (argc != 3) usage();
signal(SIGINT, exitfn);
signal(SIGTERM, exitfn);
if ((he = gethostbyname(argv[1])) == 0) usage();
memcpy(ip, he->h_addr_list[0], 4);
if ((port = strtoul(argv[2], &tmp, 10)) == 0 ||
port >= 0xffff || *tmp != 0) usage();
if ((sock = socket_udp()) == -1) perror("socket");
if (!socket_bind4(sock, ip, port)) perror("bind");
if ((code = cvm_auth_init()) != 0) return code;
log_startup();
code = 0;
do {
if ((code = read_input()) != 0) continue;
code = handle_request();
cvm_fact_end(code & CVME_MASK);
log_request();
write_output();
} while ((code & CVME_FATAL) == 0);
cvm_auth_stop();
return 0;
}
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