getport.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
#include "ipf.h"
int getport(fr, name)
frentry_t *fr;
char *name;
{
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)
return s->s_port;
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;
return p1;
}
p = getprotobynumber(fr->fr_proto);
s = getservbyname(name, p ? p->p_name : NULL);
if (s != NULL)
return s->s_port;
return -1;
}