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/* $FreeBSD$ */
#include "ipf.h"
int getport(fr, name, port)
frentry_t *fr;
char *name;
u_short *port;
{
struct protoent *p;
struct servent *s;
u_short p1;
if (fr == NULL || fr->fr_type != FR_T_IPF) {
s = getservbyname(name, NULL);
if (s != NULL) {
*port = s->s_port;
return 0;
}
return -1;
}
if ((fr->fr_flx & FI_TCPUDP) != 0) {
/*
* If a rule is "tcp/udp" then check that both TCP and UDP
* mappings for this protocol name match ports.
*/
s = getservbyname(name, "tcp");
if (s == NULL)
return -1;
p1 = s->s_port;
s = getservbyname(name, "udp");
if (s == NULL || s->s_port != p1)
return -1;
*port = p1;
return 0;
}
p = getprotobynumber(fr->fr_proto);
s = getservbyname(name, p ? p->p_name : NULL);
if (s != NULL) {
*port = s->s_port;
return 0;
}
return -1;
}
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