--- /dev/null
+/*
+ * Copyright (c) 1998-2006 The TCPDUMP project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code
+ * distributions retain the above copyright notice and this paragraph
+ * in its entirety, and (2) distributions including binary code include
+ * the above copyright notice and this paragraph in its entirety in
+ * the documentation or other materials provided with the distribution.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
+ * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
+ * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE.
+ *
+ * support for the Cisco prop. VQP Protocol
+ *
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-vqp.c,v 1.1 2006-03-03 22:31:16 hannes Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "addrtoname.h"
+
+#define VQP_VERSION 1
+#define VQP_EXTRACT_VERSION(x) ((x)&0xFF)
+
+/*
+ * VQP common header
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Constant | Packet type | Error Code | nitems |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Packet Sequence Number (4 bytes) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+struct vqp_common_header_t {
+ u_int8_t version;
+ u_int8_t msg_type;
+ u_int8_t error_code;
+ u_int8_t nitems;
+ u_int8_t sequence[4];
+};
+
+struct vqp_tlv_reqjoinport_t {
+ u_int8_t obj_type[4];
+ u_int8_t obj_length[2];
+};
+
+struct vqp_tlv_respvlan_t {
+ u_int8_t obj_type[4];
+ u_int8_t unknown1[8]; /* XXX */
+ u_int8_t obj_length[2];
+ u_int8_t unknown2[4]; /* XXX */
+};
+
+#define VQP_OBJ_REQ_JOIN_PORT 0x01
+#define VQP_OBJ_RESP_VLAN 0x02
+#define VQP_OBJ_REQ_RECONFIRM 0x03
+#define VQP_OBJ_RESP_RECONFIRM 0x04
+
+static const struct tok vqp_msg_type_values[] = {
+ { VQP_OBJ_REQ_JOIN_PORT, "Request, Join Port"},
+ { VQP_OBJ_RESP_VLAN, "Response, VLAN"},
+ { VQP_OBJ_REQ_RECONFIRM, "Request, Reconfirm"},
+ { VQP_OBJ_RESP_RECONFIRM, "Response, Reconfirm"},
+ { 0, NULL}
+};
+
+static const struct tok vqp_error_code_values[] = {
+ { 0x00, "No error"},
+ { 0x03, "Access denied"},
+ { 0x04, "Shutdown port"},
+ { 0x05, "Wrong VTP domain"},
+ { 0, NULL}
+};
+
+/* FIXME the heading 0x0c looks ugly - those must be flags etc. */
+#define VQP_OBJ_IP_ADDRESS 0x0c01
+#define VQP_OBJ_PORT_NAME 0x0c02
+#define VQP_OBJ_VLAN_NAME 0x0c03
+#define VQP_OBJ_VTP_DOMAIN 0x0c04
+#define VQP_OBJ_ETHERNET_PKT 0x0c05
+#define VQP_OBJ_MAC_NULL 0x0c06
+#define VQP_OBJ_MAC_ADDRESS 0x0c08
+
+static const struct tok vqp_obj_values[] = {
+ { VQP_OBJ_IP_ADDRESS, "Client IP Address" },
+ { VQP_OBJ_PORT_NAME, "Port Name" },
+ { VQP_OBJ_VLAN_NAME, "VLAN Name" },
+ { VQP_OBJ_VTP_DOMAIN, "VTP Domain" },
+ { VQP_OBJ_ETHERNET_PKT, "Ethernet Packet" },
+ { VQP_OBJ_MAC_NULL, "MAC Null" },
+ { VQP_OBJ_MAC_ADDRESS, "MAC Address" },
+ { 0, NULL}
+};
+
+#define FALSE 0
+#define TRUE 1
+
+void
+vqp_print(register const u_char *pptr, register u_int len)
+{
+ const struct vqp_common_header_t *vqp_common_header;
+ union {
+ const struct vqp_tlv_reqjoinport_t *reqjoinport;
+ const struct vqp_tlv_respvlan_t *respvlan;
+ } vqp_tlv;
+
+ const u_char *tptr;
+ u_int16_t vqp_obj_len;
+ u_int32_t vqp_obj_type;
+ int tlen, hexdump;
+ u_int8_t nitems;
+
+ tptr=pptr;
+ tlen = len;
+ vqp_common_header = (const struct vqp_common_header_t *)pptr;
+ TCHECK(*vqp_common_header);
+
+ /*
+ * Sanity checking of the header.
+ */
+ if (VQP_EXTRACT_VERSION(vqp_common_header->version) != VQP_VERSION) {
+ printf("VQP version %u packet not supported",
+ VQP_EXTRACT_VERSION(vqp_common_header->version));
+ return;
+ }
+
+ /* in non-verbose mode just lets print the basic Message Type */
+ if (vflag < 1) {
+ printf("VQPv%u %s Message, error-code %s (%u), length %u",
+ VQP_EXTRACT_VERSION(vqp_common_header->version),
+ tok2str(vqp_msg_type_values, "unknown (%u)",vqp_common_header->msg_type),
+ tok2str(vqp_error_code_values, "unknown (%u)",vqp_common_header->error_code),
+ vqp_common_header->error_code,
+ len);
+ return;
+ }
+
+ /* ok they seem to want to know everything - lets fully decode it */
+ nitems = vqp_common_header->nitems;
+ printf("\n\tVQPv%u, %s Message, error-code %s (%u), seq 0x%08x, items %u, length %u",
+ VQP_EXTRACT_VERSION(vqp_common_header->version),
+ tok2str(vqp_msg_type_values, "unknown (%u)",vqp_common_header->msg_type),
+ tok2str(vqp_error_code_values, "unknown (%u)",vqp_common_header->error_code),
+ vqp_common_header->error_code,
+ EXTRACT_32BITS(&vqp_common_header->sequence),
+ nitems,
+ len);
+
+ /* skip VQP Common header */
+ tptr+=sizeof(const struct vqp_common_header_t);
+ tlen-=sizeof(const struct vqp_common_header_t);
+
+ while (nitems > 0) {
+
+ switch (vqp_common_header->msg_type) {
+ case VQP_OBJ_REQ_JOIN_PORT:
+ vqp_tlv.reqjoinport = (const struct vqp_tlv_reqjoinport_t *)tptr;
+ vqp_obj_type = EXTRACT_32BITS(vqp_tlv.reqjoinport->obj_type);
+ vqp_obj_len = EXTRACT_16BITS(vqp_tlv.reqjoinport->obj_length);
+ tptr+=sizeof(struct vqp_tlv_reqjoinport_t);
+ tlen-=sizeof(struct vqp_tlv_reqjoinport_t);
+ break;
+ case VQP_OBJ_RESP_VLAN:
+ vqp_tlv.respvlan = (const struct vqp_tlv_respvlan_t *)tptr;
+ vqp_obj_type = EXTRACT_32BITS(vqp_tlv.respvlan->obj_type);
+ vqp_obj_len = EXTRACT_16BITS(vqp_tlv.respvlan->obj_length);
+ tptr+=sizeof(struct vqp_tlv_respvlan_t);
+ tlen-=sizeof(struct vqp_tlv_respvlan_t);
+ break;
+ default:
+ /* bail - don't know the TLV format of the message type */
+ return;
+ }
+
+ /* did we capture enough for fully decoding the object ? */
+ if (!TTEST2(*tptr, vqp_obj_len))
+ goto trunc;
+ hexdump=FALSE;
+
+ printf("\n\t %s Object (0x%08x), length %u, value: ",
+ tok2str(vqp_obj_values, "Unknown", vqp_obj_type),
+ vqp_obj_type, vqp_obj_len);
+
+ /* basic sanity check */
+ if (vqp_obj_type == 0 || vqp_obj_len ==0) {
+ return;
+ }
+
+ switch(vqp_obj_type) {
+ case VQP_OBJ_IP_ADDRESS:
+ printf("%s (0x%08x)", ipaddr_string(tptr), EXTRACT_32BITS(tptr));
+ break;
+ /* those objects have similar semantics - fall through */
+ case VQP_OBJ_PORT_NAME:
+ case VQP_OBJ_VLAN_NAME:
+ case VQP_OBJ_VTP_DOMAIN:
+ case VQP_OBJ_ETHERNET_PKT:
+ safeputs(tptr, vqp_obj_len);
+ break;
+ /* those objects have similar semantics - fall through */
+ case VQP_OBJ_MAC_ADDRESS:
+ case VQP_OBJ_MAC_NULL:
+ printf("%s", etheraddr_string(tptr));
+ break;
+ default:
+ if (vflag <= 1)
+ print_unknown_data(tptr, "\n\t ", vqp_obj_len);
+ break;
+ }
+ tptr += vqp_obj_len;
+ tlen -= vqp_obj_len;
+ nitems--;
+ }
+ return;
+trunc:
+ printf("\n\t[|VQP]");
+}
projects / tcpdump / commitdiff
