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/*
cipelib - library routines common to CIPE (user-mode part) and PKCIPE
Copyright 2000 Olaf Titz <olaf@bigred.inka.de>
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.
*/
/* $Id: getaddr.c,v 1.3 2000/11/22 20:23:38 olaf Exp $ */
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cipelib.h"
int getaddr(const char *c, struct sockaddr_in *sa, const char *prot)
{
struct hostent *h;
struct servent *s;
char *q=strchr(c, ':');
sa->sin_family=AF_INET;
sa->sin_port=0;
sa->sin_addr.s_addr=htonl(INADDR_ANY);
if (q) {
if (!prot) {
cipe_syslog(LOG_ERR,
"getaddr: raw IP address has no port number");
return -1;
}
*q++='\0';
if (!(sa->sin_port=htons(atoi(q)))) {
if ((s=getservbyname(q, prot)))
sa->sin_port=s->s_port;
else {
cipe_syslog(LOG_ERR,
"getaddr: port '%s' invalid/not found", q);
return -1;
}
}
}
if (!*c) {
sa->sin_addr.s_addr=htonl(INADDR_LOOPBACK);
return 0;
}
if ((sa->sin_addr.s_addr=inet_addr(c))==-1) {
if ((h=gethostbyname(c)))
memcpy(&sa->sin_addr.s_addr, h->h_addr_list[0],
sizeof(sa->sin_addr.s_addr));
else {
cipe_syslog(LOG_ERR, "getaddr: host '%s' invalid/not found", c);
return -1;
}
}
return 0;
}
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