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$FreeBSD$
Add loopback support for FreeBSD.
author: Radim Kolar
--- p0f.c.orig Tue Feb 17 21:11:51 2004
+++ p0f.c Tue Feb 17 21:10:48 2004
@@ -161,7 +161,8 @@
switch(type) {
- case DLT_NULL:
+ case DLT_NULL: header_len=4; break;
+
case DLT_SLIP:
case DLT_RAW: break;
@@ -1199,11 +1200,15 @@
/* Whoops, IP header ends past end_ptr */
if ((_u8*)(iph + 1) > end_ptr) return;
- if ( ((iph->ihl & 0x40) != 0x40) || iph->proto != IPPROTO_TCP) {
- debug("[!] WARNING: Non-IP packet received. Bad header_len!\n");
+ if ( iph->proto != IPPROTO_TCP) {
+ debug("[!] WARNING: Non-IP packet received.\n");
return;
}
+ if ( ((iph->ihl & 0x40) != 0x40) ) {
+ debug("[!] WARNING: Bad header_len!\n");
+ return;
+ }
/* If the declared length is shorter than the snapshot (etherleak
or such), truncate this bad boy. */
@@ -1590,7 +1595,7 @@
if (!use_iface) use_iface=pcap_lookupdev(errbuf);
#endif /* ^WIN32 */
- if (!use_iface) use_iface = "lo";
+ if (!use_iface) use_iface = "lo0";
/* We do not rely on pcap timeouts - they suck really bad. Of
course, the documentation sucks, and if you use the timeout
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