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/* This file is part of the Project Athena Zephyr Notification System.
* It contains the hostmanager client program.
*
* Created by: David C. Jedlinsky
*
* $Source$
* $Author$
*
* Copyright (c) 1987 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <zephyr/mit-copyright.h>
#include <zephyr/zephyr.h>
#ifndef lint
static char rcsid_hm_c[] = "$Header$";
#endif lint
#include <syslog.h>
#include <signal.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/un.h>
#define CLIENT_SOCK "/tmp/*Z|&" /* :-) */
#ifdef DEBUG
#define DPR(a) fprintf(stderr, a)
#define DPR2(a,b) fprintf(stderr, a, b)
#else
#define DPR(a)
#define DPR2(a,b)
#endif
int serv_sock, recv_sock, cli_sock;
extern int errno;
main(argc, argv)
char *argv[];
{
char buf[BUFSIZ];
struct hostent *hp;
struct servent *sp;
struct sockaddr_in serv_sin;
struct sockaddr_in recv_sin;
struct sockaddr_un cli_sun;
fd_set readable, copy;
int funix, cc, repl, nfound;
if (argc < 2) {
printf("Usage: %s server_machine\n", argv[0]);
exit(-1);
}
/* Open a random socket here, using recv_sock, to talk to server */
if ((cli_sock = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0) {
printf("client socket failed\n");
exit(1);
}
/* bind the socket to Unix domain port on the local host */
cli_sun.sun_family = AF_UNIX;
strcpy (cli_sun.sun_path, CLIENT_SOCK);
if (bind(cli_sock, &cli_sun, strlen (cli_sun.sun_path) + 2) < 0) {
perror("bind");
exit(1);
}
sp = getservbyname("zephyr-clt", "udp");
serv_sin.sin_port = sp->s_port;
if ((serv_sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
printf("server socket failed\n");
exit(1);
}
DPR2 ("zephyr server port: %u\n", ntohs(serv_sin.sin_port));
DPR2 ("zephyr client port: %s\n", cli_sun.sun_path);
/* This is here until hesiod or something that can find NS is put in */
/* who to talk to */
if ((hp = gethostbyname(argv[1])) == NULL) {
printf("gethostbyname failed\n");
exit(1);
}
/* Set up communications with server */
/* target is "zephyr-clt" port on server machine */
serv_sin.sin_family = AF_INET;
bcopy(hp->h_addr, &serv_sin.sin_addr, hp->h_length);
sprintf(buf, "This message will be an ident. notice later.\n");
/* send it off */
if ((cc = sendto(serv_sock, buf, strlen(buf) + 1,
0, &recv_sin, sizeof(recv_sin))) < 0)
perror("sendto");
else
printf("%d bytes sent\n",cc);
FD_ZERO(&readable);
FD_SET(serv_sock, &readable);
FD_SET(cli_sock, &readable);
do {
bcopy(&readable, ©, sizeof(fd_set));
/* Select on this port until response received */
if ((repl = recvfrom(serv_sock, buf, sizeof(buf),
0, &recv_sin, sizeof(recv_sin))) < 0) {
perror("recvfrom");
find_next_server(&hp);
}
else
printf("reply: %s\n",buf);
} while (repl < 0);
/* Right at end... */
unlink(CLIENT_SOCK);
}
/* This will eventually use Hesiod */
find_next_server(current_hostent)
struct hostent **current_hostent;
{
if ((*current_hostent = gethostbyname("hal")) == NULL) {
perror("gethostbyname failed\n");
exit(1);
}
}
server_manager(notice)
ZNotice_t notice;
{
printf("A notice came in from the server.\n");
}
client_manager(notice)
ZNotice_t notice;
{
printf("A notice came in from a client.\n");
}
server_timeout()
{
perror ("server timed out.\n");
exit(1);
}
new_server()
{
perror("server going down.\n");
exit(1);
}
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