1700 lines
58 KiB
C
1700 lines
58 KiB
C
/* packet-wccp.c
|
|
* Routines for Web Cache Communication Protocol dissection
|
|
* Jerry Talkington <jtalkington@users.sourceforge.net>
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <glib.h>
|
|
#include <epan/packet.h>
|
|
#include <epan/strutil.h>
|
|
#include <epan/emem.h>
|
|
#include <epan/expert.h>
|
|
#include "packet-wccp.h"
|
|
|
|
static int proto_wccp = -1;
|
|
static int hf_wccp_message_type = -1; /* the message type */
|
|
static int hf_wccp_version = -1; /* protocol version */
|
|
static int hf_wccp2_version = -1;
|
|
static int hf_hash_revision = -1; /* the version of the hash */
|
|
static int hf_change_num = -1; /* change number */
|
|
static int hf_hash_flag = -1;
|
|
static int hf_hash_flag_u = -1;
|
|
static int hf_recvd_id = -1;
|
|
static int hf_num_web_caches = -1;
|
|
static int hf_cache_ip = -1;
|
|
static int hf_item_header_length = -1;
|
|
static int hf_item_type = -1;
|
|
static int hf_item_length = -1;
|
|
static int hf_item_data = -1;
|
|
static int hf_security_option = -1;
|
|
static int hf_security_md5_checksum = -1;
|
|
static int hf_service_type = -1;
|
|
static int hf_service_id = -1;
|
|
static int hf_service_priority = -1;
|
|
static int hf_service_protocol = -1;
|
|
static int hf_service_flags = -1;
|
|
static int hf_service_flags_src_ip_hash = -1;
|
|
static int hf_service_flags_dest_ip_hash = -1;
|
|
static int hf_service_flags_src_port_hash = -1;
|
|
static int hf_service_flags_dest_port_hash = -1;
|
|
static int hf_service_flags_ports_defined = -1;
|
|
static int hf_service_flags_ports_source = -1;
|
|
static int hf_service_flags_src_ip_alt_hash = -1;
|
|
static int hf_service_flags_dest_ip_alt_hash = -1;
|
|
static int hf_service_flags_src_port_alt_hash = -1;
|
|
static int hf_service_flags_dest_port_alt_hash = -1;
|
|
static int hf_service_port = -1;
|
|
static int hf_router_identity_ip = -1;
|
|
static int hf_router_identity_receive_id = -1;
|
|
static int hf_router_send_to_ip = -1;
|
|
static int hf_router_num_recv_ip = -1;
|
|
static int hf_router_recv_ip = -1;
|
|
static int hf_web_cache_identity_ip = -1;
|
|
static int hf_web_cache_identity_hash_rev = -1;
|
|
static int hf_web_cache_identity_flags = -1;
|
|
static int hf_web_cache_identity_flag_hash_info = -1;
|
|
static int hf_web_cache_identity_flag_assign_type = -1;
|
|
static int hf_web_cache_identity_num_mask = -1;
|
|
static int hf_web_cache_identity_assign_mask = -1;
|
|
static int hf_web_cache_identity_assign_weight = -1;
|
|
static int hf_web_cache_identity_status = -1;
|
|
static int hf_assignment_key_ip = -1;
|
|
static int hf_assignment_key_change_num = -1;
|
|
static int hf_router_view_member_change_num = -1;
|
|
static int hf_router_router_num = -1;
|
|
static int hf_router_router_ip = -1;
|
|
static int hf_wc_view_info_change_num = -1;
|
|
static int hf_wc_view_router_num = -1;
|
|
static int hf_wc_view_ip = -1;
|
|
static int hf_router_assignment_element_ip = -1;
|
|
static int hf_router_assignment_element_receive_id = -1;
|
|
static int hf_router_assignment_element_change_num = -1;
|
|
static int hf_wccp2_assignment_info_router_num = -1;
|
|
static int hf_wccp2_assignment_info_ip = -1;
|
|
static int hf_router_query_info_ip = -1;
|
|
static int hf_router_query_info_receive_id = -1;
|
|
static int hf_router_query_info_send_to_ip = -1;
|
|
static int hf_router_query_info_target_ip = -1;
|
|
static int hf_capability_info_type = -1;
|
|
static int hf_capability_info_length = -1;
|
|
static int hf_capability_info_bytes = -1;
|
|
static int hf_capability_info_value = -1;
|
|
static int hf_capability_forwarding_method_flag_gre = -1;
|
|
static int hf_capability_forwarding_method_flag_l2 = -1;
|
|
static int hf_capability_assignment_method_flag_hash = -1;
|
|
static int hf_capability_assignment_method_flag_mask = -1;
|
|
static int hf_capability_return_method_flag_gre = -1;
|
|
static int hf_capability_return_method_flag_l2 = -1;
|
|
static int hf_wccp2_value_element_src_ip = -1;
|
|
static int hf_wccp2_value_element_dest_ip = -1;
|
|
static int hf_wccp2_value_element_src_port = -1;
|
|
static int hf_wccp2_value_element_dest_port = -1;
|
|
static int hf_wccp2_value_element_web_cache_ip = -1;
|
|
static int hf_wccp2_mask_value_set_element_src_ip = -1;
|
|
static int hf_wccp2_mask_value_set_element_dest_ip = -1;
|
|
static int hf_wccp2_mask_value_set_element_src_port = -1;
|
|
static int hf_wccp2_mask_value_set_element_dest_port = -1;
|
|
static int hf_wccp2_mask_value_set_element_num = -1;
|
|
static int hf_alt_assignment_info_assignment_type = -1;
|
|
static int hf_alt_assignment_info_assignment_length = -1;
|
|
static int hf_alt_assignment_info_num_routers = -1;
|
|
static int hf_alt_assignment_info_num_elements = -1;
|
|
|
|
static gint ett_wccp = -1;
|
|
static gint ett_cache_count = -1;
|
|
static gint ett_buckets = -1;
|
|
static gint ett_flags = -1;
|
|
static gint ett_cache_info = -1;
|
|
static gint ett_security_info = -1;
|
|
static gint ett_service_info = -1;
|
|
static gint ett_service_flags = -1;
|
|
static gint ett_router_identity_element = -1;
|
|
static gint ett_router_identity_info = -1;
|
|
static gint ett_wc_identity_element = -1;
|
|
static gint ett_wc_identity_info = -1;
|
|
static gint ett_router_view_info = -1;
|
|
static gint ett_wc_view_info = -1;
|
|
static gint ett_router_assignment_element = -1;
|
|
static gint ett_router_assignment_info = -1;
|
|
static gint ett_query_info = -1;
|
|
static gint ett_capabilities_info = -1;
|
|
static gint ett_capability_element = -1;
|
|
static gint ett_capability_forwarding_method = -1;
|
|
static gint ett_capability_assignment_method = -1;
|
|
static gint ett_capability_return_method = -1;
|
|
static gint ett_alt_assignment_info = -1;
|
|
static gint ett_mv_set_element = -1;
|
|
static gint ett_value_element = -1;
|
|
static gint ett_unknown_info = -1;
|
|
|
|
/*
|
|
* At
|
|
*
|
|
* http://tools.ietf.org/html/draft-forster-wrec-wccp-v1-00
|
|
*
|
|
* is a copy of the Internet-Draft for WCCP 1.0.
|
|
*
|
|
* At
|
|
*
|
|
* http://tools.ietf.org/id/draft-wilson-wrec-wccp-v2-01.txt
|
|
*
|
|
* is an Internet-Draft for WCCP 2.0.
|
|
*
|
|
* At http://tools.ietf.org/id/draft-mclaggan-wccp-v2rev1-00.txt
|
|
*
|
|
* is an Internet-Draft for WCCP 2 revision 1
|
|
*/
|
|
|
|
/* This is NOT IANA assigned */
|
|
#define UDP_PORT_WCCP 2048
|
|
|
|
#define WCCPv1 4
|
|
#define WCCPv2 0x0200
|
|
#define WCCP_HERE_I_AM 7
|
|
#define WCCP_I_SEE_YOU 8
|
|
#define WCCP_ASSIGN_BUCKET 9
|
|
#define WCCP2_HERE_I_AM 10
|
|
#define WCCP2_I_SEE_YOU 11
|
|
#define WCCP2_REDIRECT_ASSIGN 12
|
|
#define WCCP2_REMOVAL_QUERY 13
|
|
|
|
static const value_string wccp_type_vals[] = {
|
|
{ WCCP_HERE_I_AM, "1.0 Here I am" },
|
|
{ WCCP_I_SEE_YOU, "1.0 I see you" },
|
|
{ WCCP_ASSIGN_BUCKET, "1.0 Assign bucket" },
|
|
{ WCCP2_HERE_I_AM, "2.0 Here I am" },
|
|
{ WCCP2_I_SEE_YOU, "2.0 I see you" },
|
|
{ WCCP2_REDIRECT_ASSIGN, "2.0 Redirect assign" },
|
|
{ WCCP2_REMOVAL_QUERY, "2.0 Removal query" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string wccp_version_val[] = {
|
|
{ WCCPv1, "1"},
|
|
{ WCCPv2, "2"},
|
|
{ 0, NULL}
|
|
};
|
|
|
|
const true_false_string tfs_defined_not_defined = { "Defined", "Not defined" };
|
|
const true_false_string tfs_src_dest_port = { "Source port", "Destination port" };
|
|
const true_false_string tfs_historical_current = { "Historical", "Current" };
|
|
const true_false_string tfs_mask_hash = { "Mask", "Hash" };
|
|
|
|
#define HASH_INFO_SIZE (4*(1+8+1))
|
|
|
|
#define WCCP_U_FLAG 0x80000000
|
|
#define WCCP_T_FLAG 0x4000
|
|
|
|
#define WCCP2_SECURITY_INFO 0
|
|
#define WCCP2_SERVICE_INFO 1
|
|
#define WCCP2_ROUTER_ID_INFO 2
|
|
#define WCCP2_WC_ID_INFO 3
|
|
#define WCCP2_RTR_VIEW_INFO 4
|
|
#define WCCP2_WC_VIEW_INFO 5
|
|
#define WCCP2_REDIRECT_ASSIGNMENT 6
|
|
#define WCCP2_QUERY_INFO 7
|
|
#define WCCP2_CAPABILITIES_INFO 8
|
|
#define WCCP2_ALT_ASSIGNMENT 13
|
|
#define WCCP2_ASSIGN_MAP 14
|
|
#define WCCP2_COMMAND_EXTENSION 15
|
|
|
|
static const value_string info_type_vals[] = {
|
|
{ WCCP2_SECURITY_INFO, "Security Info" },
|
|
{ WCCP2_SERVICE_INFO, "Service Info" },
|
|
{ WCCP2_ROUTER_ID_INFO, "Router Identity Info" },
|
|
{ WCCP2_WC_ID_INFO, "Web-Cache Identity Info" },
|
|
{ WCCP2_RTR_VIEW_INFO, "Router View Info" },
|
|
{ WCCP2_WC_VIEW_INFO, "Web-Cache View Info" },
|
|
{ WCCP2_REDIRECT_ASSIGNMENT, "Assignment Info" },
|
|
{ WCCP2_QUERY_INFO, "Query Info" },
|
|
{ WCCP2_CAPABILITIES_INFO, "Capabilities Info" },
|
|
{ WCCP2_ALT_ASSIGNMENT, "Alternate Assignment" },
|
|
{ WCCP2_ASSIGN_MAP, "Assignment Map" },
|
|
{ WCCP2_COMMAND_EXTENSION, "Command Extension" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
const value_string service_id_vals[] = {
|
|
{ 0x00, "HTTP" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
typedef struct capability_flag {
|
|
guint32 value;
|
|
const char *short_name;
|
|
int* phf;
|
|
} capability_flag;
|
|
|
|
static void dissect_hash_data(tvbuff_t *tvb, int offset,
|
|
proto_tree *wccp_tree);
|
|
static void dissect_web_cache_list_entry(tvbuff_t *tvb, int offset,
|
|
int idx, proto_tree *wccp_tree);
|
|
static guint32 wccp_bucket_info(guint8 bucket_info, proto_tree *bucket_tree,
|
|
guint32 start, tvbuff_t *tvb, int offset);
|
|
static gchar *bucket_name(guint8 bucket);
|
|
static guint16 dissect_wccp2_header(tvbuff_t *tvb, int offset,
|
|
proto_tree *wccp_tree);
|
|
static void dissect_wccp2_info(tvbuff_t *tvb, int offset, guint16 length,
|
|
packet_info *pinfo, proto_tree *wccp_tree);
|
|
static gboolean dissect_wccp2_security_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_service_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_router_identity_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_wc_identity_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_router_view_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_wc_view_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_assignment_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_router_query_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static gboolean dissect_wccp2_capability_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
static void dissect_32_bit_capability_flags(tvbuff_t *tvb, int curr_offset,
|
|
guint16 capability_val_len, packet_info *pinfo, gint ett, const capability_flag *flags,
|
|
proto_tree *element_tree, proto_item *element_item);
|
|
static gboolean dissect_wccp2_alt_assignment_info(tvbuff_t *tvb, int offset,
|
|
int length, packet_info *pinfo, proto_tree *info_tree, proto_item *info_item);
|
|
|
|
static int
|
|
dissect_wccp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
int offset = 0;
|
|
proto_tree *wccp_tree = NULL;
|
|
proto_item *wccp_tree_item;
|
|
guint32 wccp_message_type;
|
|
guint16 length;
|
|
guint32 cache_count;
|
|
guint32 ipaddr;
|
|
guint i;
|
|
|
|
wccp_message_type = tvb_get_ntohl(tvb, offset);
|
|
|
|
/* Check if this is really a WCCP message */
|
|
if (match_strval(wccp_message_type, wccp_type_vals) == NULL)
|
|
return 0;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "WCCP");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(wccp_message_type,
|
|
wccp_type_vals, "Unknown WCCP message (%u)"));
|
|
}
|
|
|
|
if(tree != NULL) {
|
|
wccp_tree_item = proto_tree_add_item(tree, proto_wccp, tvb, offset,
|
|
-1, ENC_NA);
|
|
wccp_tree = proto_item_add_subtree(wccp_tree_item, ett_wccp);
|
|
|
|
proto_tree_add_uint(wccp_tree, hf_wccp_message_type, tvb, offset,
|
|
4, wccp_message_type);
|
|
offset += 4;
|
|
|
|
switch (wccp_message_type) {
|
|
|
|
case WCCP_HERE_I_AM:
|
|
proto_tree_add_item(wccp_tree, hf_wccp_version, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
dissect_hash_data(tvb, offset, wccp_tree);
|
|
offset += HASH_INFO_SIZE;
|
|
proto_tree_add_item(wccp_tree, hf_recvd_id, tvb, offset,
|
|
4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
break;
|
|
|
|
case WCCP_I_SEE_YOU:
|
|
proto_tree_add_item(wccp_tree, hf_wccp_version, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(wccp_tree, hf_change_num, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(wccp_tree, hf_recvd_id, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
cache_count = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(wccp_tree, hf_num_web_caches, tvb, offset, 4, cache_count);
|
|
offset += 4;
|
|
for (i = 0; i < cache_count; i++) {
|
|
dissect_web_cache_list_entry(tvb, offset, i, wccp_tree);
|
|
offset += 4 + HASH_INFO_SIZE;
|
|
}
|
|
break;
|
|
|
|
case WCCP_ASSIGN_BUCKET:
|
|
/*
|
|
* This hasn't been tested, since I don't have any
|
|
* traces with this in it.
|
|
*
|
|
* The V1 spec claims that this does, indeed,
|
|
* have a Received ID field after the type,
|
|
* rather than a Version field.
|
|
*/
|
|
proto_tree_add_item(wccp_tree, hf_recvd_id, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
cache_count = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(wccp_tree, hf_num_web_caches, tvb, offset, 4, cache_count);
|
|
offset += 4;
|
|
for (i = 0; i < cache_count; i++) {
|
|
ipaddr = tvb_get_ipv4(tvb, offset);
|
|
proto_tree_add_ipv4_format(wccp_tree,
|
|
hf_cache_ip, tvb, offset, 4,
|
|
ipaddr,
|
|
"Web Cache %d IP Address: %s", i,
|
|
ip_to_str((guint8 *)&ipaddr));
|
|
offset += 4;
|
|
}
|
|
for (i = 0; i < 256; i += 4) {
|
|
proto_tree_add_text(wccp_tree, tvb, offset, 4,
|
|
"Buckets %d - %d: %10s %10s %10s %10s",
|
|
i, i + 3,
|
|
bucket_name(tvb_get_guint8(tvb, offset)),
|
|
bucket_name(tvb_get_guint8(tvb, offset+1)),
|
|
bucket_name(tvb_get_guint8(tvb, offset+2)),
|
|
bucket_name(tvb_get_guint8(tvb, offset+3)));
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
case WCCP2_HERE_I_AM:
|
|
case WCCP2_I_SEE_YOU:
|
|
case WCCP2_REMOVAL_QUERY:
|
|
case WCCP2_REDIRECT_ASSIGN:
|
|
default: /* assume unknown packets are v2 */
|
|
length = dissect_wccp2_header(tvb, offset, wccp_tree);
|
|
offset += 4;
|
|
dissect_wccp2_info(tvb, offset, length, pinfo, wccp_tree);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return(tvb_length(tvb));
|
|
}
|
|
|
|
static void
|
|
dissect_hash_data(tvbuff_t *tvb, int offset, proto_tree *wccp_tree)
|
|
{
|
|
proto_item *bucket_item;
|
|
proto_tree *bucket_tree;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
int i, n;
|
|
guint8 bucket_info;
|
|
|
|
proto_tree_add_item(wccp_tree, hf_hash_revision, tvb, offset, 4,
|
|
ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
bucket_item = proto_tree_add_text(wccp_tree, tvb, offset, 32,
|
|
"Hash information");
|
|
bucket_tree = proto_item_add_subtree(bucket_item, ett_buckets);
|
|
|
|
for (i = 0, n = 0; i < 32; i++) {
|
|
bucket_info = tvb_get_guint8(tvb, offset);
|
|
n = wccp_bucket_info(bucket_info, bucket_tree, n, tvb, offset);
|
|
offset += 1;
|
|
}
|
|
|
|
tf = proto_tree_add_item(wccp_tree, hf_hash_flag, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
field_tree = proto_item_add_subtree(tf, ett_flags);
|
|
proto_tree_add_item(field_tree, hf_hash_flag_u, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static void
|
|
dissect_web_cache_list_entry(tvbuff_t *tvb, int offset, int idx,
|
|
proto_tree *wccp_tree)
|
|
{
|
|
proto_item *tl;
|
|
proto_tree *list_entry_tree;
|
|
|
|
tl = proto_tree_add_text(wccp_tree, tvb, offset, 4 + HASH_INFO_SIZE,
|
|
"Web-Cache List Entry(%d)", idx);
|
|
list_entry_tree = proto_item_add_subtree(tl, ett_cache_info);
|
|
proto_tree_add_item(list_entry_tree, hf_cache_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
dissect_hash_data(tvb, offset + 4, list_entry_tree);
|
|
}
|
|
|
|
/*
|
|
* wccp_bucket_info()
|
|
* takes an integer representing a "Hash Information" bitmap, and spits out
|
|
* the corresponding proto_tree entries, returning the next bucket number.
|
|
*/
|
|
static guint32
|
|
wccp_bucket_info(guint8 bucket_info, proto_tree *bucket_tree, guint32 start,
|
|
tvbuff_t *tvb, int offset)
|
|
{
|
|
guint32 i;
|
|
|
|
for(i = 0; i < 8; i++) {
|
|
proto_tree_add_text(bucket_tree, tvb, offset, sizeof(bucket_info), "Bucket %3d: %s", start, (bucket_info & 1<<i ? "Assigned" : "Not Assigned") );
|
|
start++;
|
|
}
|
|
return(start);
|
|
}
|
|
|
|
static gchar *
|
|
bucket_name(guint8 bucket)
|
|
{
|
|
gchar *cur;
|
|
|
|
if (bucket == 0xff) {
|
|
cur="Unassigned";
|
|
} else {
|
|
cur=ep_strdup_printf("%u", bucket);
|
|
}
|
|
return cur;
|
|
}
|
|
|
|
static guint16
|
|
dissect_wccp2_header(tvbuff_t *tvb, int offset, proto_tree *wccp_tree)
|
|
{
|
|
guint16 length;
|
|
|
|
proto_tree_add_item(wccp_tree, hf_wccp2_version, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint(wccp_tree, hf_item_header_length, tvb, offset, 2, length);
|
|
return length;
|
|
}
|
|
|
|
static void
|
|
dissect_wccp2_info(tvbuff_t *tvb, int offset, guint16 length,
|
|
packet_info *pinfo, proto_tree *wccp_tree)
|
|
{
|
|
guint16 type;
|
|
guint16 item_length;
|
|
proto_item *ti;
|
|
proto_tree *info_tree;
|
|
gint ett;
|
|
gboolean (*dissector)(tvbuff_t *, int, int, packet_info *, proto_tree *, proto_item *);
|
|
|
|
while (length != 0) {
|
|
type = tvb_get_ntohs(tvb, offset);
|
|
item_length = tvb_get_ntohs(tvb, offset+2);
|
|
|
|
switch (type) {
|
|
|
|
case WCCP2_SECURITY_INFO:
|
|
ett = ett_security_info;
|
|
dissector = dissect_wccp2_security_info;
|
|
break;
|
|
|
|
case WCCP2_SERVICE_INFO:
|
|
ett = ett_service_info;
|
|
dissector = dissect_wccp2_service_info;
|
|
break;
|
|
|
|
case WCCP2_ROUTER_ID_INFO:
|
|
ett = ett_router_identity_info;
|
|
dissector = dissect_wccp2_router_identity_info;
|
|
break;
|
|
|
|
case WCCP2_WC_ID_INFO:
|
|
ett = ett_wc_identity_info;
|
|
dissector = dissect_wccp2_wc_identity_info;
|
|
break;
|
|
|
|
case WCCP2_RTR_VIEW_INFO:
|
|
ett = ett_router_view_info;
|
|
dissector = dissect_wccp2_router_view_info;
|
|
break;
|
|
|
|
case WCCP2_WC_VIEW_INFO:
|
|
ett = ett_wc_view_info;
|
|
dissector = dissect_wccp2_wc_view_info;
|
|
break;
|
|
|
|
case WCCP2_REDIRECT_ASSIGNMENT:
|
|
ett = ett_router_assignment_info;
|
|
dissector = dissect_wccp2_assignment_info;
|
|
break;
|
|
|
|
case WCCP2_QUERY_INFO:
|
|
ett = ett_query_info;
|
|
dissector = dissect_wccp2_router_query_info;
|
|
break;
|
|
|
|
case WCCP2_CAPABILITIES_INFO:
|
|
ett = ett_capabilities_info;
|
|
dissector = dissect_wccp2_capability_info;
|
|
break;
|
|
|
|
case WCCP2_ALT_ASSIGNMENT:
|
|
ett = ett_alt_assignment_info;
|
|
dissector = dissect_wccp2_alt_assignment_info;
|
|
break;
|
|
|
|
case WCCP2_ASSIGN_MAP:
|
|
case WCCP2_COMMAND_EXTENSION:
|
|
default:
|
|
ett = ett_unknown_info;
|
|
dissector = NULL;
|
|
break;
|
|
}
|
|
|
|
ti = proto_tree_add_text(wccp_tree, tvb, offset, item_length + 4, "Message Component (%s)",
|
|
val_to_str(type, info_type_vals, "Unknown info type (%u)"));
|
|
info_tree = proto_item_add_subtree(ti, ett);
|
|
proto_tree_add_item(info_tree, hf_item_type, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_item_length, tvb, offset+2, 2, ENC_BIG_ENDIAN);
|
|
|
|
offset += 4;
|
|
length -= 4;
|
|
|
|
/*
|
|
* XXX - pass in "length" and check for that as well.
|
|
*/
|
|
if (dissector != NULL) {
|
|
if (!(*dissector)(tvb, offset, item_length, pinfo, info_tree, ti))
|
|
return; /* ran out of data */
|
|
} else {
|
|
proto_tree_add_item(info_tree, hf_item_data, tvb, offset, item_length, ENC_NA);
|
|
}
|
|
offset += item_length;
|
|
length -= item_length;
|
|
}
|
|
}
|
|
|
|
#define SECURITY_INFO_LEN 4
|
|
|
|
#define WCCP2_NO_SECURITY 0
|
|
#define WCCP2_MD5_SECURITY 1
|
|
|
|
const value_string security_option_vals[] = {
|
|
{ WCCP2_NO_SECURITY, "None" },
|
|
{ WCCP2_MD5_SECURITY, "MD5" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static gboolean
|
|
dissect_wccp2_security_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint32 security_option;
|
|
|
|
if (length < SECURITY_INFO_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, SECURITY_INFO_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
security_option = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_item(info_tree, hf_security_option, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
if (security_option == WCCP2_MD5_SECURITY) {
|
|
proto_tree_add_item(info_tree, hf_security_md5_checksum, tvb, offset+4, length-4, ENC_NA);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define SERVICE_INFO_LEN (4+4+8*2)
|
|
|
|
#define WCCP2_SERVICE_STANDARD 0
|
|
#define WCCP2_SERVICE_DYNAMIC 1
|
|
|
|
const value_string service_type_vals[] = {
|
|
{ WCCP2_SERVICE_STANDARD, "Well-known service" },
|
|
{ WCCP2_SERVICE_DYNAMIC, "Dynamic service" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Service flags.
|
|
*/
|
|
#define WCCP2_SI_SRC_IP_HASH 0x0001
|
|
#define WCCP2_SI_DST_IP_HASH 0x0002
|
|
#define WCCP2_SI_SRC_PORT_HASH 0x0004
|
|
#define WCCP2_SI_DST_PORT_HASH 0x0008
|
|
#define WCCP2_SI_PORTS_DEFINED 0x0010
|
|
#define WCCP2_SI_PORTS_SOURCE 0x0020
|
|
#define WCCP2_SI_SRC_IP_ALT_HASH 0x0100
|
|
#define WCCP2_SI_DST_IP_ALT_HASH 0x0200
|
|
#define WCCP2_SI_SRC_PORT_ALT_HASH 0x0400
|
|
#define WCCP2_SI_DST_PORT_ALT_HASH 0x0800
|
|
|
|
static gboolean
|
|
dissect_wccp2_service_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint8 service_type;
|
|
guint8 priority;
|
|
guint8 protocol;
|
|
guint32 flags;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
int i;
|
|
|
|
if (length != SERVICE_INFO_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be %u", length, SERVICE_INFO_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
service_type = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(info_tree, hf_service_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
switch (service_type) {
|
|
|
|
case WCCP2_SERVICE_STANDARD:
|
|
proto_tree_add_item(info_tree, hf_service_id, tvb, offset+1, 1, ENC_BIG_ENDIAN);
|
|
tf = proto_tree_add_item(info_tree, hf_service_priority, tvb, offset+2, 1, ENC_BIG_ENDIAN);
|
|
priority = tvb_get_guint8(tvb, offset+2);
|
|
if (priority != 0)
|
|
expert_add_info_format(pinfo, tf, PI_PROTOCOL, PI_WARN,
|
|
"The priority must be zero for well-known services.");
|
|
tf = proto_tree_add_item(info_tree, hf_service_protocol, tvb, offset+3, 1, ENC_BIG_ENDIAN);
|
|
protocol = tvb_get_guint8(tvb, offset+3);
|
|
if (protocol != 0)
|
|
expert_add_info_format(pinfo, tf, PI_PROTOCOL, PI_WARN,
|
|
"The protocol must be zero for well-known services.");
|
|
break;
|
|
|
|
case WCCP2_SERVICE_DYNAMIC:
|
|
proto_tree_add_item(info_tree, hf_service_id, tvb, offset+1, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_service_priority, tvb, offset+2, 1, ENC_BIG_ENDIAN);
|
|
/*
|
|
* XXX - does "IP protocol identifier" mean this is a
|
|
* protocol type of the sort you get in IP headers?
|
|
* If so, we should get a table of those from the
|
|
* IP dissector, and use that.
|
|
*/
|
|
proto_tree_add_item(info_tree, hf_service_protocol, tvb, offset+3, 1, ENC_BIG_ENDIAN);
|
|
break;
|
|
}
|
|
offset += 4;
|
|
|
|
flags = tvb_get_ntohl(tvb, offset);
|
|
tf = proto_tree_add_item(info_tree, hf_service_flags, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
field_tree = proto_item_add_subtree(tf, ett_service_flags);
|
|
|
|
proto_tree_add_item(field_tree, hf_service_flags_src_ip_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_dest_ip_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_src_port_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_dest_port_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_ports_defined, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
if (flags & WCCP2_SI_PORTS_DEFINED)
|
|
proto_tree_add_item(field_tree, hf_service_flags_ports_source, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_src_ip_alt_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_dest_ip_alt_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_src_port_alt_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_service_flags_dest_port_alt_hash, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
if (flags & WCCP2_SI_PORTS_DEFINED) {
|
|
for (i = 0; i < 8; i++) {
|
|
proto_tree_add_item(info_tree, hf_service_port, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define ROUTER_ID_INFO_MIN_LEN (8+4+4)
|
|
|
|
static void
|
|
dissect_wccp2_router_identity_element(tvbuff_t *tvb, int offset,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_router_identity_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_router_identity_receive_id, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static gboolean
|
|
dissect_wccp2_router_identity_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint32 n_received_from;
|
|
guint i;
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
if (length < ROUTER_ID_INFO_MIN_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, ROUTER_ID_INFO_MIN_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
te = proto_tree_add_text(info_tree, tvb, offset, 8,
|
|
"Router Identity Element: IP address %s",
|
|
tvb_ip_to_str(tvb, offset));
|
|
element_tree = proto_item_add_subtree(te, ett_router_identity_element);
|
|
dissect_wccp2_router_identity_element(tvb, offset, element_tree);
|
|
offset += 8;
|
|
|
|
proto_tree_add_item(info_tree, hf_router_send_to_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
n_received_from = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_item(info_tree, hf_router_num_recv_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
for (i = 0; i < n_received_from; i++) {
|
|
proto_tree_add_ipv4_format_value(info_tree, hf_router_recv_ip, tvb, offset, 4,
|
|
tvb_get_ipv4(tvb, offset), "Received From IP Address %d: %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
offset += 4;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define WC_ID_INFO_LEN (4+4+8*4+4)
|
|
|
|
static gboolean
|
|
dissect_wccp2_web_cache_identity_element(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, int length)
|
|
{
|
|
proto_item *bucket_item;
|
|
proto_tree *bucket_tree;
|
|
proto_item *tf;
|
|
proto_tree *field_tree;
|
|
guint16 flags;
|
|
guint32 i, n, num_masks;
|
|
guint8 bucket_info;
|
|
|
|
proto_tree_add_item(tree, hf_web_cache_identity_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(tree, hf_web_cache_identity_hash_rev, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
flags = tvb_get_ntohs(tvb, offset);
|
|
tf = proto_tree_add_uint(tree, hf_web_cache_identity_flags, tvb, offset, 2, flags);
|
|
field_tree = proto_item_add_subtree(tf, ett_flags);
|
|
proto_tree_add_item(field_tree, hf_web_cache_identity_flag_hash_info, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(field_tree, hf_web_cache_identity_flag_assign_type, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
if (flags & WCCP_T_FLAG) {
|
|
bucket_item = proto_tree_add_text(tree, tvb, offset, 8*4, "Mask Assignment information");
|
|
bucket_tree = proto_item_add_subtree(bucket_item, ett_buckets);
|
|
|
|
num_masks = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(bucket_tree, hf_web_cache_identity_num_mask, tvb, offset, 4, num_masks);
|
|
offset += 4;
|
|
for (i = 0; i < num_masks; i++) {
|
|
proto_tree_add_item(bucket_tree, hf_web_cache_identity_assign_mask, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
}
|
|
}
|
|
else {
|
|
if (length != WC_ID_INFO_LEN) {
|
|
expert_add_info_format(pinfo, tf, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be %u", length, WC_ID_INFO_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
bucket_item = proto_tree_add_text(tree, tvb, offset, 8*4, "Hash information");
|
|
bucket_tree = proto_item_add_subtree(bucket_item, ett_buckets);
|
|
for (i = 0, n = 0; i < 32; i++) {
|
|
bucket_info = tvb_get_guint8(tvb, offset);
|
|
n = wccp_bucket_info(bucket_info, bucket_tree, n, tvb, offset);
|
|
offset += 1;
|
|
}
|
|
}
|
|
|
|
proto_tree_add_item(tree, hf_web_cache_identity_assign_weight, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(tree, hf_web_cache_identity_status, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
dissect_wccp2_wc_identity_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item _U_)
|
|
{
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
te = proto_tree_add_text(info_tree, tvb, offset, length,
|
|
"Web-Cache Identity Element: IP address %s",
|
|
tvb_ip_to_str(tvb, offset));
|
|
element_tree = proto_item_add_subtree(te, ett_wc_identity_element);
|
|
if (!dissect_wccp2_web_cache_identity_element(tvb, offset, pinfo, element_tree, length))
|
|
return FALSE; /* ran out of data */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define ROUTER_VIEW_INFO_MIN_LEN (4+8+4)
|
|
|
|
static void
|
|
dissect_wccp2_assignment_key(tvbuff_t *tvb, int offset,
|
|
proto_tree *info_tree)
|
|
{
|
|
proto_tree_add_item(info_tree, hf_assignment_key_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_assignment_key_change_num, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static gboolean
|
|
dissect_wccp2_router_view_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint32 n_routers;
|
|
guint32 n_web_caches;
|
|
guint i;
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
if (length < ROUTER_VIEW_INFO_MIN_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, ROUTER_VIEW_INFO_MIN_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
proto_tree_add_item(info_tree, hf_router_view_member_change_num, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
dissect_wccp2_assignment_key(tvb, offset, info_tree);
|
|
offset += 8;
|
|
|
|
n_routers = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_router_router_num, tvb, offset, 4, n_routers);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_routers; i++) {
|
|
proto_tree_add_ipv4_format_value(info_tree, hf_router_router_ip, tvb, offset, 4,
|
|
tvb_get_ipv4(tvb, offset), "Router %d IP Address: %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
offset += 4;
|
|
}
|
|
|
|
n_web_caches = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_num_web_caches, tvb, offset, 4, n_web_caches);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_web_caches; i++) {
|
|
te = proto_tree_add_text(info_tree, tvb, offset, WC_ID_INFO_LEN,
|
|
"Web-Cache Identity Element %d: IP address %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
element_tree = proto_item_add_subtree(te, ett_wc_identity_element);
|
|
if (!dissect_wccp2_web_cache_identity_element(tvb, offset, pinfo, element_tree, WC_ID_INFO_LEN))
|
|
return FALSE; /* ran out of data */
|
|
offset += WC_ID_INFO_LEN;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define WC_VIEW_INFO_MIN_LEN (4+4)
|
|
|
|
static gboolean
|
|
dissect_wccp2_wc_view_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint32 n_routers;
|
|
guint32 n_web_caches;
|
|
guint i;
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
if (length < WC_VIEW_INFO_MIN_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, WC_VIEW_INFO_MIN_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
proto_tree_add_item(info_tree, hf_wc_view_info_change_num, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
n_routers = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_wc_view_router_num, tvb, offset, 4, n_routers);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_routers; i++) {
|
|
te = proto_tree_add_text(info_tree, tvb, offset, 8,
|
|
"Router %d Identity Element: IP address %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
element_tree = proto_item_add_subtree(te, ett_router_identity_element);
|
|
dissect_wccp2_router_identity_element(tvb, offset, element_tree);
|
|
offset += 8;
|
|
}
|
|
|
|
n_web_caches = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_num_web_caches, tvb, offset, 4, n_web_caches);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_web_caches; i++) {
|
|
proto_tree_add_ipv4_format_value(info_tree, hf_wc_view_ip, tvb, offset, 4,
|
|
tvb_get_ipv4(tvb, offset), "Web-Cache %d IP Address: %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
offset += 4;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define ASSIGNMENT_INFO_MIN_LEN (8+4)
|
|
|
|
static void
|
|
dissect_wccp2_router_assignment_element(tvbuff_t *tvb, int offset,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree_add_item(tree, hf_router_assignment_element_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_router_assignment_element_receive_id, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_router_assignment_element_change_num, tvb, offset+8, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static gchar *
|
|
assignment_bucket_name(guint8 bucket)
|
|
{
|
|
gchar *cur;
|
|
|
|
if (bucket == 0xff) {
|
|
cur="Unassigned";
|
|
} else {
|
|
cur=ep_strdup_printf("%u%s", bucket >> 1,
|
|
(bucket & 0x01) ? " (Alt)" : "");
|
|
}
|
|
return cur;
|
|
}
|
|
|
|
static gboolean
|
|
dissect_wccp2_assignment_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint32 n_routers;
|
|
guint32 n_web_caches;
|
|
guint i;
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
if (length < ASSIGNMENT_INFO_MIN_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, ASSIGNMENT_INFO_MIN_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
dissect_wccp2_assignment_key(tvb, offset, info_tree);
|
|
offset += 8;
|
|
|
|
n_routers = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_wccp2_assignment_info_router_num, tvb, offset, 4, n_routers);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_routers; i++) {
|
|
te = proto_tree_add_text(info_tree, tvb, offset, 4,
|
|
"Router %d Assignment Element: IP address %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
element_tree = proto_item_add_subtree(te, ett_router_assignment_element);
|
|
dissect_wccp2_router_assignment_element(tvb, offset, element_tree);
|
|
offset += 12;
|
|
}
|
|
|
|
n_web_caches = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_num_web_caches, tvb, offset, 4, n_web_caches);
|
|
offset += 4;
|
|
|
|
for (i = 0; i < n_web_caches; i++) {
|
|
proto_tree_add_ipv4_format_value(info_tree, hf_wccp2_assignment_info_ip, tvb, offset, 4,
|
|
tvb_get_ipv4(tvb, offset), "Web-Cache %d IP Address: %s", i,
|
|
tvb_ip_to_str(tvb, offset));
|
|
offset += 4;
|
|
}
|
|
|
|
for (i = 0; i < 256; i += 4) {
|
|
proto_tree_add_text(info_tree, tvb, offset, 4,
|
|
"Buckets %d - %d: %10s %10s %10s %10s",
|
|
i, i + 3,
|
|
assignment_bucket_name(tvb_get_guint8(tvb, offset)),
|
|
assignment_bucket_name(tvb_get_guint8(tvb, offset+1)),
|
|
assignment_bucket_name(tvb_get_guint8(tvb, offset+2)),
|
|
assignment_bucket_name(tvb_get_guint8(tvb, offset+3)));
|
|
offset += 4;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define QUERY_INFO_LEN (4+4+4+4)
|
|
|
|
static gboolean
|
|
dissect_wccp2_router_query_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
if (length != QUERY_INFO_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be %u", length, QUERY_INFO_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
proto_tree_add_item(info_tree, hf_router_query_info_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_router_query_info_receive_id, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_router_query_info_send_to_ip, tvb, offset+8, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(info_tree, hf_router_query_info_target_ip, tvb, offset+12, 4, ENC_BIG_ENDIAN);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define WCCP2_FORWARDING_METHOD 0x01
|
|
#define WCCP2_ASSIGNMENT_METHOD 0x02
|
|
#define WCCP2_PACKET_RETURN_METHOD 0x03
|
|
|
|
static const value_string capability_type_vals[] = {
|
|
{ WCCP2_FORWARDING_METHOD, "Forwarding Method" },
|
|
{ WCCP2_ASSIGNMENT_METHOD, "Assignment Method" },
|
|
{ WCCP2_PACKET_RETURN_METHOD, "Return Method" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define WCCP2_FORWARDING_METHOD_GRE 0x00000001
|
|
#define WCCP2_FORWARDING_METHOD_L2 0x00000002
|
|
|
|
static const capability_flag forwarding_method_flags[] = {
|
|
{ WCCP2_FORWARDING_METHOD_GRE, "IP-GRE", &hf_capability_forwarding_method_flag_gre },
|
|
{ WCCP2_FORWARDING_METHOD_L2, "L2", &hf_capability_forwarding_method_flag_l2 },
|
|
{ 0, NULL, NULL }
|
|
};
|
|
|
|
#define WCCP2_ASSIGNMENT_METHOD_HASH 0x00000001
|
|
#define WCCP2_ASSIGNMENT_METHOD_MASK 0x00000002
|
|
|
|
static const capability_flag assignment_method_flags[] = {
|
|
{ WCCP2_ASSIGNMENT_METHOD_HASH, "Hash", &hf_capability_assignment_method_flag_hash },
|
|
{ WCCP2_ASSIGNMENT_METHOD_MASK, "Mask", &hf_capability_assignment_method_flag_mask },
|
|
{ 0, NULL, NULL }
|
|
};
|
|
|
|
#define WCCP2_PACKET_RETURN_METHOD_GRE 0x00000001
|
|
#define WCCP2_PACKET_RETURN_METHOD_L2 0x00000002
|
|
|
|
static const capability_flag packet_return_method_flags[] = {
|
|
{ WCCP2_PACKET_RETURN_METHOD_GRE, "IP-GRE", &hf_capability_return_method_flag_gre },
|
|
{ WCCP2_PACKET_RETURN_METHOD_L2, "L2", &hf_capability_return_method_flag_l2 },
|
|
{ 0, NULL, NULL }
|
|
};
|
|
|
|
static gboolean
|
|
dissect_wccp2_capability_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item _U_)
|
|
{
|
|
guint16 capability_type;
|
|
guint16 capability_val_len;
|
|
int curr_offset;
|
|
proto_item *te;
|
|
proto_tree *element_tree;
|
|
|
|
for (curr_offset = offset; curr_offset < (length + offset);
|
|
curr_offset += (capability_val_len + 4)) {
|
|
capability_type = tvb_get_ntohs(tvb, curr_offset);
|
|
capability_val_len = tvb_get_ntohs(tvb, curr_offset + 2);
|
|
|
|
te = proto_tree_add_item(info_tree, hf_capability_info_type, tvb, curr_offset, 2, ENC_BIG_ENDIAN);
|
|
proto_item_set_len(te, capability_val_len + 4);
|
|
element_tree = proto_item_add_subtree(te, ett_capability_element);
|
|
if (capability_val_len < 4) {
|
|
expert_add_info_format(pinfo, te, PI_PROTOCOL, PI_WARN,
|
|
"Value Length: %u (illegal, must be >= 4)", capability_val_len);
|
|
break;
|
|
}
|
|
|
|
proto_tree_add_uint(element_tree, hf_capability_info_length, tvb, curr_offset+2, 2, capability_val_len);
|
|
switch (capability_type) {
|
|
|
|
case WCCP2_FORWARDING_METHOD:
|
|
dissect_32_bit_capability_flags(tvb, curr_offset,
|
|
capability_val_len, pinfo,
|
|
ett_capability_forwarding_method,
|
|
forwarding_method_flags, element_tree, te);
|
|
break;
|
|
|
|
case WCCP2_ASSIGNMENT_METHOD:
|
|
dissect_32_bit_capability_flags(tvb, curr_offset,
|
|
capability_val_len, pinfo,
|
|
ett_capability_assignment_method,
|
|
assignment_method_flags, element_tree, te);
|
|
break;
|
|
|
|
case WCCP2_PACKET_RETURN_METHOD:
|
|
dissect_32_bit_capability_flags(tvb, curr_offset,
|
|
capability_val_len, pinfo,
|
|
ett_capability_return_method,
|
|
packet_return_method_flags, element_tree, te);
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(element_tree, hf_capability_info_bytes, tvb, curr_offset+4, capability_val_len, ENC_NA);
|
|
break;
|
|
}
|
|
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
dissect_32_bit_capability_flags(tvbuff_t *tvb, int curr_offset,
|
|
guint16 capability_val_len, packet_info *pinfo, gint ett, const capability_flag *flags,
|
|
proto_tree *element_tree, proto_item *element_item)
|
|
{
|
|
guint32 capability_val;
|
|
proto_item *tm;
|
|
proto_tree *method_tree;
|
|
int i;
|
|
gboolean first = TRUE;
|
|
|
|
if (capability_val_len != 4) {
|
|
expert_add_info_format(pinfo, element_item, PI_PROTOCOL, PI_WARN,
|
|
"Value Length: %u (illegal, must be >= 4)", capability_val_len);
|
|
return;
|
|
}
|
|
|
|
capability_val = tvb_get_ntohl(tvb, curr_offset + 4);
|
|
tm = proto_tree_add_uint(element_tree, hf_capability_info_value, tvb, curr_offset + 4, 4, capability_val);
|
|
|
|
for (i = 0; flags[i].short_name != NULL; i++) {
|
|
if (capability_val & flags[i].value) {
|
|
if (first) {
|
|
proto_item_append_text( tm, " (%s", flags[i].short_name);
|
|
first = FALSE;
|
|
} else {
|
|
proto_item_append_text( tm, ", %s", flags[i].short_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (first == FALSE)
|
|
proto_item_append_text( tm, ")");
|
|
|
|
method_tree = proto_item_add_subtree(tm, ett);
|
|
for (i = 0; flags[i].phf != NULL; i++)
|
|
proto_tree_add_item(method_tree, *(flags[i].phf), tvb, curr_offset+4, 4, ENC_BIG_ENDIAN);
|
|
|
|
}
|
|
|
|
#define ALT_ASSIGNMENT_INFO_MIN_LEN (4+4)
|
|
|
|
#define WCCP2_HASH_ASSIGNMENT_TYPE 0x0000
|
|
#define WCCP2_MASK_ASSIGNMENT_TYPE 0x0001
|
|
|
|
static const value_string assignment_type_vals[] = {
|
|
{ WCCP2_HASH_ASSIGNMENT_TYPE, "Hash" },
|
|
{ WCCP2_MASK_ASSIGNMENT_TYPE, "Mask" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_wccp2_value_element(tvbuff_t *tvb, int offset, int idx, proto_tree *info_tree)
|
|
{
|
|
proto_item *tl;
|
|
proto_tree *element_tree;
|
|
|
|
tl = proto_tree_add_text(info_tree, tvb, offset, 16, "Value Element(%u)", idx);
|
|
element_tree = proto_item_add_subtree(tl, ett_value_element);
|
|
|
|
proto_tree_add_item(element_tree, hf_wccp2_value_element_src_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_value_element_dest_ip, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_value_element_src_port, tvb, offset+8, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_value_element_dest_port, tvb, offset+10, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_value_element_web_cache_ip, tvb, offset+12, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static guint
|
|
dissect_wccp2_mask_value_set_element(tvbuff_t *tvb, int offset, int idx, proto_tree *info_tree)
|
|
{
|
|
proto_item *tl;
|
|
proto_tree *element_tree;
|
|
guint num_of_val_elements;
|
|
guint i;
|
|
|
|
tl = proto_tree_add_text(info_tree, tvb, offset, 0, "Mask/Value Set Element(%d)", idx);
|
|
element_tree = proto_item_add_subtree(tl, ett_mv_set_element);
|
|
|
|
proto_tree_add_item(element_tree, hf_wccp2_mask_value_set_element_src_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_mask_value_set_element_dest_ip, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_mask_value_set_element_src_port, tvb, offset+8, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_mask_value_set_element_dest_port, tvb, offset+10, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(element_tree, hf_wccp2_mask_value_set_element_num, tvb, offset+12, 4, ENC_BIG_ENDIAN);
|
|
num_of_val_elements = tvb_get_ntohl(tvb, offset+12);
|
|
offset += 16;
|
|
|
|
for (i = 0; i < num_of_val_elements; i++)
|
|
{
|
|
dissect_wccp2_value_element(tvb, offset, i, element_tree);
|
|
offset += 16;
|
|
}
|
|
|
|
proto_item_set_len(tl, 16+i*16);
|
|
|
|
return 16+idx*16;
|
|
}
|
|
|
|
static gboolean
|
|
dissect_wccp2_alt_assignment_info(tvbuff_t *tvb, int offset, int length,
|
|
packet_info *pinfo, proto_tree *info_tree, proto_item *info_item)
|
|
{
|
|
guint16 assignment_type;
|
|
guint16 assignment_length;
|
|
|
|
if (length < ALT_ASSIGNMENT_INFO_MIN_LEN) {
|
|
expert_add_info_format(pinfo, info_item, PI_PROTOCOL, PI_WARN,
|
|
"Item length is %u, should be >= %u", length, ALT_ASSIGNMENT_INFO_MIN_LEN);
|
|
return TRUE;
|
|
}
|
|
|
|
assignment_type = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(info_tree, hf_alt_assignment_info_assignment_type, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
assignment_length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(info_tree, hf_alt_assignment_info_assignment_length, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
switch (assignment_type) {
|
|
case WCCP2_HASH_ASSIGNMENT_TYPE:
|
|
dissect_wccp2_assignment_info(tvb, offset, assignment_length, pinfo, info_tree, info_item);
|
|
break;
|
|
|
|
case WCCP2_MASK_ASSIGNMENT_TYPE:
|
|
{
|
|
guint num_of_rtr;
|
|
guint num_of_elem;
|
|
guint i;
|
|
|
|
dissect_wccp2_assignment_key(tvb, offset, info_tree);
|
|
offset += 8;
|
|
|
|
num_of_rtr = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_alt_assignment_info_num_routers, tvb, offset, 4, num_of_rtr);
|
|
offset += 4;
|
|
for (i = 0; i < num_of_rtr; i++)
|
|
{
|
|
dissect_wccp2_router_assignment_element(tvb, offset, info_tree);
|
|
offset += 12;
|
|
}
|
|
|
|
num_of_elem = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_uint(info_tree, hf_alt_assignment_info_num_elements, tvb, offset, 4, num_of_elem);
|
|
offset += 4;
|
|
for (i = 0; i < num_of_elem; i++)
|
|
{
|
|
offset += dissect_wccp2_mask_value_set_element(tvb, offset, i, info_tree);
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
proto_register_wccp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_wccp_message_type,
|
|
{ "WCCP Message Type", "wccp.message", FT_UINT32, BASE_DEC, VALS(wccp_type_vals), 0x0,
|
|
"The WCCP message that was sent", HFILL }
|
|
},
|
|
{ &hf_wccp_version,
|
|
{ "WCCP Version", "wccp.version", FT_UINT32, BASE_HEX, VALS(wccp_version_val), 0x0,
|
|
"The WCCP version", HFILL }
|
|
},
|
|
{ &hf_wccp2_version,
|
|
{ "WCCP Version", "wccp.version", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"The WCCP version", HFILL }
|
|
},
|
|
{ &hf_hash_revision,
|
|
{ "Hash Revision", "wccp.hash_revision", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
"The cache hash revision", HFILL }
|
|
},
|
|
{ &hf_change_num,
|
|
{ "Change Number", "wccp.change_num", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
"The Web-Cache list entry change number", HFILL }
|
|
},
|
|
{ &hf_hash_flag,
|
|
{ "Flags", "wccp.hash_flag", FT_UINT32, BASE_HEX, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_hash_flag_u,
|
|
{ "Hash information", "wccp.hash_flag.u", FT_BOOLEAN, 32, TFS(&tfs_historical_current), WCCP_U_FLAG,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_recvd_id,
|
|
{ "Received ID", "wccp.recvd_id", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
"The number of I_SEE_YOU's that have been sent", HFILL }
|
|
},
|
|
{ &hf_num_web_caches,
|
|
{ "Number of Web Caches", "wccp.num_web_caches", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_cache_ip,
|
|
{ "Web Cache IP address", "wccp.cache_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"The IP address of a Web cache", HFILL }
|
|
},
|
|
{ &hf_item_header_length,
|
|
{ "Length", "wccp.item_header_length", FT_UINT16, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_item_length,
|
|
{ "Length", "wccp.item_length", FT_UINT16, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_item_type,
|
|
{ "Type", "wccp.item_type", FT_UINT16, BASE_DEC, VALS(info_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_item_data,
|
|
{ "Data", "wccp.item_data", FT_BYTES, BASE_NONE, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_security_option,
|
|
{ "Security Option", "wccp.security_option", FT_UINT16, BASE_DEC, VALS(security_option_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_security_md5_checksum,
|
|
{ "MD5 checksum", "wccp.security_md5_checksum", FT_BYTES, BASE_NONE, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_type,
|
|
{ "Service Type", "wccp.service_type", FT_UINT8, BASE_DEC, VALS(service_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_id,
|
|
{ "Service ID", "wccp.service_id", FT_UINT8, BASE_DEC, VALS(service_id_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_priority,
|
|
{ "Priority", "wccp.service_priority", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_protocol,
|
|
{ "Protocol", "wccp.service_protocol", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags,
|
|
{ "Flags", "wccp.service_flags", FT_UINT32, BASE_HEX, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_src_ip_hash,
|
|
{ "Source IP address in primary hash", "wccp.service_flag.src_ip_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_IP_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_dest_ip_hash,
|
|
{ "Destination IP address in primary hash", "wccp.service_flag.dest_ip_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_IP_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_src_port_hash,
|
|
{ "Source port in primary hash", "wccp.service_flag.src_port_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_PORT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_dest_port_hash,
|
|
{ "Destination port in primary hash", "wccp.service_flag.dest_port_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_PORT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_ports_defined,
|
|
{ "Ports", "wccp.service_flag.ports_defined", FT_BOOLEAN, 32, TFS(&tfs_defined_not_defined), WCCP2_SI_PORTS_DEFINED,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_ports_source,
|
|
{ "Ports refer to", "wccp.service_flag.ports_source", FT_BOOLEAN, 32, TFS(&tfs_src_dest_port), WCCP2_SI_PORTS_SOURCE,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_src_ip_alt_hash,
|
|
{ "Source IP address in secondary hash", "wccp.service_flag.src_ip_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_IP_ALT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_dest_ip_alt_hash,
|
|
{ "Destination IP address in secondary hash", "wccp.service_flag.dest_ip_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_IP_ALT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_src_port_alt_hash,
|
|
{ "Source port in secondary hash", "wccp.service_flag.src_port_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_PORT_ALT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_flags_dest_port_alt_hash,
|
|
{ "Destination port in secondary hash", "wccp.service_flag.dest_port_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_PORT_ALT_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_service_port,
|
|
{ "Port", "wccp.service_port", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_identity_ip,
|
|
{ "IP Address", "wccp.router_identity.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_identity_receive_id,
|
|
{ "Received ID", "wccp.router_identity.receive_id", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_send_to_ip,
|
|
{ "Sent To IP Address", "wccp.router.send_to_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_num_recv_ip,
|
|
{ "Number of Received From IP addresses", "wccp.router.num_recv_ip", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_recv_ip,
|
|
{ "Received From IP Address", "wccp.router.recv_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_ip,
|
|
{ "Web-Cache IP Address", "wccp.web_cache_identity.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_hash_rev,
|
|
{ "Hash Revision", "wccp.web_cache_identity.hash_rev", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_flags,
|
|
{ "Flags", "wccp.web_cache_identity.flags", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_flag_hash_info,
|
|
{ "Hash information", "wccp.web_cache_identity.flags.hash_info", FT_BOOLEAN, 16, TFS(&tfs_historical_current), 0x8000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_flag_assign_type,
|
|
{ "Assignment Type", "wccp.web_cache_identity.flags.assign_type", FT_BOOLEAN, 16, TFS(&tfs_mask_hash), 0x4000,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_num_mask,
|
|
{ "Number of Masks", "wccp.web_cache_identity.num_mask", FT_UINT32, BASE_DEC, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_assign_mask,
|
|
{ "Mask Element", "wccp.web_cache_identity.assign_mask", FT_UINT32, BASE_HEX, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_assign_weight,
|
|
{ "Assignment Weight", "wccp.web_cache_identity.assignment_weight", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_web_cache_identity_status,
|
|
{ "Status", "wccp.web_cache_identity.status", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_assignment_key_ip,
|
|
{ "Assignment Key IP Address", "wccp.assignment_key.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_assignment_key_change_num,
|
|
{ "Assignment Key Change Number", "wccp.assignment_key.change_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_view_member_change_num,
|
|
{ "Member Change Number", "wccp.router_view.member_change_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_router_num,
|
|
{ "Number of Routers", "wccp.router_view.router_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_router_ip,
|
|
{ "Router IP Address", "wccp.router_view.router_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wc_view_info_change_num,
|
|
{ "Change Number", "wccp.wc_view.change_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wc_view_router_num,
|
|
{ "Number of Routers", "wccp.wc_view.router_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wc_view_ip,
|
|
{ "Router IP Address", "wccp.wc_view.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_assignment_element_ip,
|
|
{ "IP Address", "wccp.router_assignment_element.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_assignment_element_receive_id,
|
|
{ "Receive ID", "wccp.router_assignment_element.receive_id", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_assignment_element_change_num,
|
|
{ "Change Number", "wccp.router_assignment_element.change_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_assignment_info_router_num,
|
|
{ "Number of Routers", "wccp.assignment_info.router_num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_assignment_info_ip,
|
|
{ "Router IP Address", "wccp.assignment_info.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_query_info_ip,
|
|
{ "Router IP Address", "wccp.router_query_info.ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_query_info_receive_id,
|
|
{ "Receive ID", "wccp.router_query_info.receive_id", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_query_info_send_to_ip,
|
|
{ "Sent To IP Address", "wccp.router_query_info.send_to_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_router_query_info_target_ip,
|
|
{ "Target IP Address", "wccp.router_query_info.target_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_info_type,
|
|
{ "Type", "wccp.capability_info.type", FT_UINT16, BASE_DEC, VALS(capability_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_info_length,
|
|
{ "Value Length", "wccp.capability_info.length", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_info_bytes,
|
|
{ "Value", "wccp.capability_info.bytes", FT_BYTES, BASE_NONE, 0x0, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_info_value,
|
|
{ "Value", "wccp.capability_info.value", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_forwarding_method_flag_gre,
|
|
{ "GRE-encapsulated", "wccp.capability_info.forwarding_method_flag.gre", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_FORWARDING_METHOD_GRE,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_forwarding_method_flag_l2,
|
|
{ "L2 rewrite", "wccp.capability_info.forwarding_method_flag.l2", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_FORWARDING_METHOD_L2,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_assignment_method_flag_hash,
|
|
{ "Hash", "wccp.capability_info.assignment_method_flag.hash", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_ASSIGNMENT_METHOD_HASH,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_assignment_method_flag_mask,
|
|
{ "Mask", "wccp.capability_info.assignment_method_flag.mask", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_ASSIGNMENT_METHOD_MASK,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_return_method_flag_gre,
|
|
{ "GRE-encapsulated", "wccp.capability_info.return_method_flag.gre", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_PACKET_RETURN_METHOD_GRE,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_capability_return_method_flag_l2,
|
|
{ "L2 rewrite", "wccp.capability_info.return_method_flag.l2", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), WCCP2_PACKET_RETURN_METHOD_L2,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_value_element_src_ip,
|
|
{ "Source Address", "wccp.value_element.src_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_value_element_dest_ip,
|
|
{ "Destination Address", "wccp.value_element.dest_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_value_element_src_port,
|
|
{ "Source Port", "wccp.value_element.src_port", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_value_element_dest_port,
|
|
{ "Destination Port", "wccp.value_element.dest_port", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_value_element_web_cache_ip,
|
|
{ "Web Cache Address", "wccp.value_element.web_cache_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_mask_value_set_element_src_ip,
|
|
{ "Source Address Mask", "wccp.mask_value_set_element.src_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_mask_value_set_element_dest_ip,
|
|
{ "Destination Address Mask", "wccp.mask_value_set_element.dest_ip", FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_mask_value_set_element_src_port,
|
|
{ "Source Port Mask", "wccp.mask_value_set_element.src_port", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_mask_value_set_element_dest_port,
|
|
{ "Destination Port Mask", "wccp.mask_value_set_element.dest_port", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_wccp2_mask_value_set_element_num,
|
|
{ "Number of Value Elements", "wccp.mask_value_set_element.num", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_alt_assignment_info_assignment_type,
|
|
{ "Assignment type", "wccp.alt_assignment_info.assignment_type", FT_UINT16, BASE_DEC, VALS(assignment_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_alt_assignment_info_assignment_length,
|
|
{ "Assignment length", "wccp.alt_assignment_info.assignment_length", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_alt_assignment_info_num_routers,
|
|
{ "Number of routers", "wccp.alt_assignment_info.num_routers", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_alt_assignment_info_num_elements,
|
|
{ "Number of elements", "wccp.alt_assignment_info.num_elements", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_wccp,
|
|
&ett_cache_count,
|
|
&ett_buckets,
|
|
&ett_flags,
|
|
&ett_cache_info,
|
|
&ett_security_info,
|
|
&ett_service_info,
|
|
&ett_service_flags,
|
|
&ett_router_identity_element,
|
|
&ett_router_identity_info,
|
|
&ett_wc_identity_element,
|
|
&ett_wc_identity_info,
|
|
&ett_router_view_info,
|
|
&ett_wc_view_info,
|
|
&ett_query_info,
|
|
&ett_router_assignment_element,
|
|
&ett_router_assignment_info,
|
|
&ett_capabilities_info,
|
|
&ett_capability_element,
|
|
&ett_capability_forwarding_method,
|
|
&ett_capability_assignment_method,
|
|
&ett_capability_return_method,
|
|
&ett_mv_set_element,
|
|
&ett_value_element,
|
|
&ett_alt_assignment_info,
|
|
&ett_unknown_info,
|
|
};
|
|
|
|
proto_wccp = proto_register_protocol("Web Cache Communication Protocol",
|
|
"WCCP", "wccp");
|
|
proto_register_field_array(proto_wccp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_wccp(void)
|
|
{
|
|
dissector_handle_t wccp_handle;
|
|
|
|
wccp_handle = new_create_dissector_handle(dissect_wccp, proto_wccp);
|
|
dissector_add_uint("udp.port", UDP_PORT_WCCP, wccp_handle);
|
|
}
|