diff options
Diffstat (limited to 'lib/libalias/alias.c')
| -rw-r--r-- | lib/libalias/alias.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/lib/libalias/alias.c b/lib/libalias/alias.c index 48a852a..50e597f 100644 --- a/lib/libalias/alias.c +++ b/lib/libalias/alias.c @@ -73,6 +73,9 @@ - Eliminated PacketAliasIn2() and PacketAliasOut2() as poorly conceived. + Version 2.3 Dec 1998 (dillon) + - Major bounds checking additions, see FreeBSD/CVS + See HISTORY file for additional revisions. */ @@ -603,6 +606,7 @@ UdpAliasIn(struct ip *pip) u_short alias_port; int accumulate; u_short *sptr; + int r = 0; alias_address = GetAliasAddress(link); original_address = GetOriginalAddress(link); @@ -613,11 +617,11 @@ UdpAliasIn(struct ip *pip) if (ntohs(ud->uh_dport) == NETBIOS_DGM_PORT_NUMBER || ntohs(ud->uh_sport) == NETBIOS_DGM_PORT_NUMBER ) { - AliasHandleUdpNbt(pip, link, &original_address, ud->uh_dport); + r = AliasHandleUdpNbt(pip, link, &original_address, ud->uh_dport); } else if (ntohs(ud->uh_dport) == NETBIOS_NS_PORT_NUMBER || ntohs(ud->uh_sport) == NETBIOS_NS_PORT_NUMBER ) { - AliasHandleUdpNbtNS(pip, link, + r = AliasHandleUdpNbtNS(pip, link, &alias_address, &alias_port, &original_address, @@ -648,7 +652,14 @@ UdpAliasIn(struct ip *pip) (u_short *) &pip->ip_dst, 2); pip->ip_dst = original_address; - return(PKT_ALIAS_OK); + + /* + * If we cannot figure out the packet, ignore it. + */ + if (r < 0) + return(PKT_ALIAS_IGNORED); + else + return(PKT_ALIAS_OK); } return(PKT_ALIAS_IGNORED); } |
