Print out SNAP frames reasonably, including Apple's bogus Ethertalk
pseudo-SNAP encapsulation. Still needs some work, by someone who has a listing of 802.2 LSAPs.
This commit is contained in:
parent
025dc82971
commit
7ce1918123
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=3369
@ -20,13 +20,14 @@
|
||||
*/
|
||||
#ifndef lint
|
||||
static char rcsid[] =
|
||||
"@(#) $Header: print-ether.c,v 1.22 91/10/07 20:18:28 leres Exp $ (LBL)";
|
||||
"@(#) $Header: /home/ncvs/src/usr.sbin/tcpdump/tcpdump/print-ether.c,v 1.1.1.1 1993/06/12 14:42:09 rgrimes Exp $ (LBL)";
|
||||
#endif
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <net/if.h>
|
||||
#include <net/if_llc.h>
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/if_ether.h>
|
||||
#include <netinet/in_systm.h>
|
||||
@ -39,6 +40,7 @@ static char rcsid[] =
|
||||
|
||||
#include "interface.h"
|
||||
#include "addrtoname.h"
|
||||
#include "appletalk.h"
|
||||
|
||||
u_char *packetp;
|
||||
u_char *snapend;
|
||||
@ -61,6 +63,123 @@ ether_print(ep, length)
|
||||
length);
|
||||
}
|
||||
|
||||
static inline void
|
||||
eight02_print(ep, lp, length)
|
||||
register struct ether_header *ep;
|
||||
struct llc *lp;
|
||||
int length;
|
||||
{
|
||||
if(eflag || length < LLC_UFRAMELEN) {
|
||||
(void)printf("%s %s %d: ",
|
||||
etheraddr_string(ESRC(ep)),
|
||||
etheraddr_string(EDST(ep)),
|
||||
length);
|
||||
}
|
||||
|
||||
if(length < LLC_UFRAMELEN) {
|
||||
printf("[|llc]");
|
||||
return;
|
||||
}
|
||||
|
||||
if(eflag && lp->llc_dsap != LLC_SNAP_LSAP) {
|
||||
switch(lp->llc_control) {
|
||||
case LLC_UI: printf("ui "); break;
|
||||
case LLC_UI_P: printf("ui-p "); break;
|
||||
case LLC_DISC: printf("disc "); break;
|
||||
case LLC_DISC_P: printf("disc-p "); break;
|
||||
case LLC_UA: printf("ua "); break;
|
||||
case LLC_UA_P: printf("ua-p "); break;
|
||||
case LLC_TEST: printf("test "); break;
|
||||
case LLC_TEST_P: printf("test-p "); break;
|
||||
case LLC_FRMR: printf("frmr "); break;
|
||||
case LLC_FRMR_P: printf("frmr-p "); break;
|
||||
case LLC_DM: printf("dm "); break;
|
||||
case LLC_DM_P: printf("dm-p "); break;
|
||||
case LLC_XID: printf("xid "); break;
|
||||
case LLC_XID_P: printf("xid-p "); break;
|
||||
case LLC_SABME: printf("sabme "); break;
|
||||
case LLC_SABME_P: printf("sabme-p "); break;
|
||||
case LLC_RR: printf("rr "); break;
|
||||
case LLC_RNR: printf("rnr "); break;
|
||||
case LLC_REJ: printf("rej "); break;
|
||||
case LLC_INFO: printf("info "); break;
|
||||
|
||||
default:
|
||||
printf("[control %d] ", lp->llc_control);
|
||||
break;
|
||||
}
|
||||
}
|
||||
switch(lp->llc_dsap) {
|
||||
case LLC_SNAP_LSAP:
|
||||
if(length < 6) {
|
||||
printf(" [|snap]");
|
||||
return;
|
||||
}
|
||||
|
||||
#define llc_snap_oui llc_un.type_snap.org_code
|
||||
#define llc_snap_type llc_un.type_snap.ether_type
|
||||
if(lp->llc_snap_oui[0] == 0x08
|
||||
&& lp->llc_snap_oui[1] == 0x00
|
||||
&& lp->llc_snap_oui[2] == 0x07) {
|
||||
printf("[ethertalk] ");
|
||||
ddp_print((struct atDDP *)((char *)lp + 6),
|
||||
length - 6);
|
||||
} else {
|
||||
if(!eflag) {
|
||||
(void)printf("%s %s %d: ",
|
||||
etheraddr_string(ESRC(ep)),
|
||||
etheraddr_string(EDST(ep)),
|
||||
length);
|
||||
}
|
||||
printf("snap %02x-%02x-%02x type %04x ",
|
||||
lp->llc_snap_oui[0], lp->llc_snap_oui[1],
|
||||
lp->llc_snap_oui[2], lp->llc_snap_type);
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
if(!eflag) {
|
||||
(void)printf("%s %s %d: ",
|
||||
etheraddr_string(ESRC(ep)),
|
||||
etheraddr_string(EDST(ep)),
|
||||
length);
|
||||
switch(lp->llc_control) {
|
||||
case LLC_UI: printf("ui "); break;
|
||||
case LLC_UI_P: printf("ui-p "); break;
|
||||
case LLC_DISC: printf("disc "); break;
|
||||
case LLC_DISC_P: printf("disc-p "); break;
|
||||
case LLC_UA: printf("ua "); break;
|
||||
case LLC_UA_P: printf("ua-p "); break;
|
||||
case LLC_TEST: printf("test "); break;
|
||||
case LLC_TEST_P: printf("test-p "); break;
|
||||
case LLC_FRMR: printf("frmr "); break;
|
||||
case LLC_FRMR_P: printf("frmr-p "); break;
|
||||
case LLC_DM: printf("dm "); break;
|
||||
case LLC_DM_P: printf("dm-p "); break;
|
||||
case LLC_XID: printf("xid "); break;
|
||||
case LLC_XID_P: printf("xid-p "); break;
|
||||
case LLC_SABME: printf("sabme "); break;
|
||||
case LLC_SABME_P: printf("sabme-p "); break;
|
||||
case LLC_RR: printf("rr "); break;
|
||||
case LLC_RNR: printf("rnr "); break;
|
||||
case LLC_REJ: printf("rej "); break;
|
||||
case LLC_INFO: printf("info "); break;
|
||||
|
||||
default:
|
||||
printf("[control %d] ", lp->llc_control);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
printf("[dsap %d] [ssap %d] ",
|
||||
lp->llc_dsap, lp->llc_ssap);
|
||||
break;
|
||||
}
|
||||
|
||||
if (xflag)
|
||||
default_print((u_short *)lp, length);
|
||||
}
|
||||
|
||||
/*
|
||||
* This is the top level routine of the printer. 'p' is the points
|
||||
* to the ether header of the packet, 'tvp' is the timestamp,
|
||||
@ -110,8 +229,14 @@ ether_if_print(p, tvp, length, caplen)
|
||||
break;
|
||||
|
||||
default:
|
||||
if (ntohs(ep->ether_type) < 1500) {
|
||||
eight02_print(ep, (struct llc *)p,
|
||||
caplen - sizeof(*ep));
|
||||
goto out;
|
||||
}
|
||||
if (!eflag)
|
||||
ether_print(ep, length);
|
||||
|
||||
if (!xflag && !qflag)
|
||||
default_print((u_short *)p, caplen - sizeof(*ep));
|
||||
break;
|
||||
|
Loading…
Reference in New Issue
Block a user