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/*
* Program: $RCSfile: sendto.c,v $ $Revision: 4.3 $
*
* Purpose: Send a message with UDP packet.
* Invoked from mh-inc-folder-hook.
*
* Usage: sendto <host> <service> <message>
*
* Author: K.Agusa agusa@nuie.nagoya-u.ac.jp
* S.Yamamoto yamamoto@nuie.nagoya-u.ac.jp
*
* Modified: K.Makimura macky@agusa.nuie.nagoya-u.ac.jp
*
* Date: 1993/07/24
* Modified: $Date: 1994/08/01 12:57:38 $
*
* Copyright: K.Agusa and S.Yamamoto 1993 - 94
*
* The X Consortium, and any party obtaining a copy of these files from
* the X Consortium, directly or indirectly, is granted, free of charge,
* a full and unrestricted irrevocable, world-wide, paid up, royalty-free,
* nonexclusive right and license to deal in this software and documentation
* files (the "Software"), including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons who receive copies from any such
* party to do so. This license includes without limitation a license to do
* the foregoing actions under any patents of the party supplying this
* software to the X Consortium.
*/
#ifndef lint
static char rcsid[] =
"$Id: sendto.c,v 4.3 1994/08/01 12:57:38 yamamoto Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
/*
* Platform definitions.
*/
#if defined(SVR4) && !defined(SYSV)
#define SYSV
#endif /* defined(SVR4) && !defined(SYSV) */
/*
* For compatibility.
*/
#ifdef SYSV
#include <string.h> /* For strchr(). */
#else /* not SYSV */
#include <strings.h>
#if !defined(strchr) && !defined(strrchr)
#define strchr(str, c) index((str), (c))
#define strrchr(str, c) rindex((str), (c))
#endif /* !defined(strchr) && !defined(strrchr) */
#endif /* not SYSV */
#ifdef SYSV
#define bzero(dst, len) memset((dst), '\0', (len))
#define bcopy(src, dst, len) memcpy((dst), (src), (len))
#endif
static struct sockaddr_in sa; /* Server address. */
static int sockid; /* Socket Id. */
static char err_msg[256];
static char *
udp_init(host, service)
char *host;
char *service;
{
struct hostent *hp; /* Result of host name lookup. */
struct servent *sp; /* Result of service lookup. */
if ((hp = gethostbyname(host)) == NULL) {
sprintf(err_msg, "No such host: %s", host);
return (err_msg);
}
if ((sp = getservbyname(service, "udp")) == NULL) {
sprintf(err_msg, "No such service: %s", service);
return (err_msg);
}
if ((sockid = socket(hp->h_addrtype, SOCK_DGRAM, 0)) < 0) {
sprintf(err_msg, "Error in getting socket");
return (err_msg);
}
bzero((char *)&sa, sizeof(sa));
sa.sin_family = hp->h_addrtype;
bcopy((char *)hp->h_addr, (char *)&sa.sin_addr, hp->h_length);
sa.sin_port = sp->s_port;
return ((char *)NULL);
}
static char *
udp_send(message)
char *message;
{
int len;
len = strlen(message);
if (sendto(sockid, message, len, 0, &sa, sizeof(sa)) != len) {
sprintf(err_msg, "Error in sending packet");
return (err_msg);
}
return ((char *)NULL);
}
#ifndef CALLED_FROM_POPD
void
main(argc, argv)
int argc;
char **argv;
{
char *msg;
char *prog_name;
if ((prog_name = strrchr(argv[0], '/')) != NULL) {
prog_name++;
} else {
prog_name = argv[0];
}
if (argc != 4) {
fprintf(stderr, "%s: Usage: sendto <host> <service> <message>\n",
prog_name);
exit(1);
}
if ((msg = udp_init(argv[1], argv[2])) != NULL) {
fprintf(stderr, "%s: %s\n", prog_name, msg);
exit(1);
}
if ((msg = udp_send(argv[3])) != NULL) {
fprintf(stderr, "%s: %s\n", prog_name, msg);
exit(1);
}
exit(0);
}
#else /* CALLED_FROM_POPD */
#ifndef YOUBINSERVICE
#define YOUBINSERVICE "biff" /* For patch to popd. */
#endif /* not YOUBINSERVICE */
void
sendto_youbin(username)
char *username;
{
char msg[256];
if (udp_init("localhost", YOUBINSERVICE) != NULL) {
return;
}
sprintf(msg, "U %s", username);
udp_send(msg);
}
#endif /* CALLED_FROM_POPD */
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