static int
IcmpAliasIn(struct libalias *la, struct ip *pip)
{
int iresult;
struct icmp *ic;
LIBALIAS_LOCK_ASSERT(la);
/* Return if proxy-only mode is enabled */
if (la->packetAliasMode & PKT_ALIAS_PROXY_ONLY)
return (PKT_ALIAS_OK);
ic = (struct icmp *)ip_next(pip);
iresult = PKT_ALIAS_IGNORED;
switch (ic->icmp_type) {
case ICMP_ECHOREPLY:
case ICMP_TSTAMPREPLY:
if (ic->icmp_code == 0) {
iresult = IcmpAliasIn1(la, pip);
}
break;
case ICMP_UNREACH:
case ICMP_SOURCEQUENCH:
case ICMP_TIMXCEED:
case ICMP_PARAMPROB:
iresult = IcmpAliasIn2(la, pip);
break;
case ICMP_ECHO:
case ICMP_TSTAMP:
iresult = IcmpAliasIn1(la, pip);
break;
}
return (iresult);
}
static int
IcmpAliasIn(struct ip *pip)
{
int iresult;
struct icmp *ic;
/* Return if proxy-only mode is enabled */
if (packetAliasMode & PKT_ALIAS_PROXY_ONLY)
return PKT_ALIAS_OK;
ic = (struct icmp *) ((char *) pip + (pip->ip_hl << 2));
iresult = PKT_ALIAS_IGNORED;
switch (ic->icmp_type)
{
case ICMP_ECHOREPLY:
case ICMP_TSTAMPREPLY:
if (ic->icmp_code == 0)
{
iresult = IcmpAliasIn1(pip);
}
break;
case ICMP_UNREACH:
case ICMP_SOURCEQUENCH:
case ICMP_TIMXCEED:
case ICMP_PARAMPROB:
iresult = IcmpAliasIn2(pip);
break;
case ICMP_ECHO:
case ICMP_TSTAMP:
iresult = IcmpAliasIn1(pip);
break;
}
return(iresult);
}