diff options
Diffstat (limited to 'epan/dissectors/packet-wccp.c')
| -rw-r--r-- | epan/dissectors/packet-wccp.c | 3580 |
1 files changed, 3580 insertions, 0 deletions
diff --git a/epan/dissectors/packet-wccp.c b/epan/dissectors/packet-wccp.c new file mode 100644 index 00000000..0f860804 --- /dev/null +++ b/epan/dissectors/packet-wccp.c @@ -0,0 +1,3580 @@ +/* packet-wccp.c + * Routines for Web Cache C* Protocol dissection + * Jerry Talkington <jtalkington@users.sourceforge.net> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/to_str.h> +#include <epan/ipproto.h> +#include <epan/expert.h> +#include "packet-wccp.h" + +void proto_register_wccp(void); +void proto_reg_handoff_wccp(void); + +static dissector_handle_t wccp_handle; + +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_bucket = -1; +static int hf_bucket_bit = -1; +static int hf_message_header_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_wc_num = -1; +static int hf_wc_view_wc_num = -1; +static int hf_cache_ip = -1; +static int hf_message_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_info_option = -1; +static int hf_security_info_md5_checksum = -1; +static int hf_command_element_type = -1; +static int hf_command_element_length = -1; +static int hf_command_length = -1; +static int hf_command_element_shutdown_ip_index = -1; +static int hf_command_element_shutdown_ipv4 = -1; +static int hf_command_element_shutdown_ipv6 = -1; +static int hf_command_unknown = -1; +static int hf_service_info_type = -1; +static int hf_service_info_id_standard = -1; +static int hf_service_info_id_dynamic = -1; +static int hf_service_info_priority = -1; +static int hf_service_info_protocol = -1; +static int hf_service_info_flags = -1; +static int hf_service_info_flags_src_ip_hash = -1; +static int hf_service_info_flags_dest_ip_hash = -1; +static int hf_service_info_flags_src_port_hash = -1; +static int hf_service_info_flags_dest_port_hash = -1; +static int hf_service_info_flags_ports_defined = -1; +static int hf_service_info_flags_ports_source = -1; +static int hf_service_info_flags_redirect_only_protocol_0 = -1; +static int hf_service_info_flags_src_ip_alt_hash = -1; +static int hf_service_info_flags_dest_ip_alt_hash = -1; +static int hf_service_info_flags_src_port_alt_hash = -1; +static int hf_service_info_flags_dest_port_alt_hash = -1; +static int hf_service_info_flags_reserved = -1; +static int hf_service_info_source_port = -1; +static int hf_service_info_destination_port = -1; +static int hf_router_identity_ip_index = -1; +static int hf_router_identity_ipv4 = -1; +static int hf_router_identity_ipv6 = -1; +static int hf_router_identity_receive_id = -1; +static int hf_router_identity_send_to_ip_index = -1; +static int hf_router_identity_send_to_ipv4 = -1; +static int hf_router_identity_send_to_ipv6 = -1; +static int hf_router_identity_received_from_num = -1; +static int hf_web_cache_identity_index = -1; +static int hf_web_cache_identity_ipv4 = -1; +static int hf_web_cache_identity_ipv6 = -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_flag_version_request = -1; +static int hf_web_cache_identity_flag_reserved = -1; +static int hf_mask_value_set_element_value_element_num = -1; +static int hf_assignment_weight = -1; +static int hf_assignment_status = -1; +static int hf_assignment_key_ip_index = -1; +static int hf_assignment_key_ipv4 = -1; +static int hf_assignment_key_ipv6 = -1; +static int hf_assignment_key_change_num = -1; +static int hf_assignment_no_data = -1; +static int hf_router_view_member_change_num = -1; +static int hf_router_router_num = -1; +static int hf_router_identity_router_ip_index = -1; +static int hf_router_identity_router_ipv4 = -1; +static int hf_router_identity_router_ipv6 = -1; +static int hf_wc_view_info_change_num = -1; +static int hf_wc_view_info_router_ip_index = -1; +static int hf_wc_view_info_router_ipv4 = -1; +static int hf_wc_view_info_router_ipv6 = -1; +static int hf_wc_view_info_wc_ip_index = -1; +static int hf_wc_view_info_wc_ipv4 = -1; +static int hf_wc_view_info_wc_ipv6 = -1; +static int hf_wc_view_router_num = -1; +static int hf_wc_identity_ip_address_index = -1; +static int hf_wc_identity_ip_address_ipv4 = -1; +static int hf_wc_identity_ip_address_ipv6 = -1; +static int hf_router_identity_received_from_ip_index = -1; +static int hf_router_identity_received_from_ipv4 = -1; +static int hf_router_identity_received_from_ipv6 = -1; +static int hf_router_assignment_element_change_num = -1; +static int hf_assignment_info_router_num = -1; +static int hf_hash_buckets_assignment_wc_num = -1; +static int hf_hash_buckets_assignment_wc_ip_index = -1; +static int hf_hash_buckets_assignment_wc_ipv4 = -1; +static int hf_hash_buckets_assignment_wc_ipv6 = -1; +static int hf_assignment_info_router_ip_index = -1; +static int hf_assignment_info_router_ipv4 = -1; +static int hf_assignment_info_router_ipv6 = -1; +static int hf_router_view_ip_index = -1; +static int hf_router_view_ipv4 = -1; +static int hf_router_view_ipv6 = -1; +static int hf_router_query_info_ip_index = -1; +static int hf_router_query_info_ipv4 = -1; +static int hf_router_query_info_ipv6 = -1; +static int hf_router_query_info_send_to_ip_index = -1; +static int hf_router_query_info_send_to_ipv4 = -1; +static int hf_router_query_info_send_to_ipv6 = -1; +static int hf_router_query_info_target_ip_index = -1; +static int hf_router_query_info_target_ipv4 = -1; +static int hf_router_query_info_target_ipv6 = -1; +static int hf_capability_element_type = -1; +static int hf_capability_element_length = -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_capability_transmit_t = -1; +static int hf_capability_transmit_t_upper_limit = -1; +static int hf_capability_transmit_t_lower_limit = -1; +static int hf_capability_timer_scale_timeout_scale = -1; +static int hf_capability_timer_scale_ra_timer_scale = -1; +static int hf_capability_timer_scale_timeout_scale_upper_limit = -1; +static int hf_capability_timer_scale_timeout_scale_lower_limit = -1; +static int hf_capability_timer_scale_ra_scale_upper_limit = -1; +static int hf_capability_timer_scale_ra_scale_lower_limit = -1; +static int hf_capability_value = -1; +static int hf_reserved_zero = -1; +static int hf_value_element_src_ip_index = -1; +static int hf_value_element_src_ipv4 = -1; +static int hf_value_element_src_ipv6 = -1; +static int hf_value_element_dest_ip_index = -1; +static int hf_value_element_dest_ipv4 = -1; +static int hf_value_element_dest_ipv6 = -1; +static int hf_value_element_src_port = -1; +static int hf_value_element_dest_port = -1; +static int hf_value_element_web_cache_ip_index = -1; +static int hf_value_element_web_cache_ipv4 = -1; +static int hf_value_element_web_cache_ipv6 = -1; +static int hf_mask_value_set_list_num_elements = -1; +static int hf_mask_element_src_ip = -1; +static int hf_mask_element_dest_ip = -1; +static int hf_mask_element_src_port = -1; +static int hf_mask_element_dest_port = -1; +static int hf_alt_assignment_info_assignment_type = -1; +static int hf_extended_assignment_data_type = -1; +static int hf_alt_assignment_info_assignment_length = -1; +static int hf_alt_assignment_map_assignment_type = -1; +static int hf_alt_assignment_map_assignment_length = -1; +static int hf_extended_assignment_data_length = -1; +static int hf_alt_assignment_info_num_routers = -1; +static int hf_alt_assignment_mask_value_set_element_num_wc_value_elements = -1; +static int hf_web_cache_value_element_wc_address_index = -1; +static int hf_web_cache_value_element_wc_address_ipv4 = -1; +static int hf_web_cache_value_element_wc_address_ipv6 = -1; +static int hf_web_cache_value_element_num_values = -1; +static int hf_web_cache_value_seq_num = -1; +static int hf_alt_assignment_mask_value_set_list_num_elements = -1; +static int hf_address_table_family = -1; +static int hf_address_table_address_length = -1; +static int hf_address_table_length = -1; +static int hf_address_table_element = -1; + +static gint ett_wccp = -1; +static gint ett_buckets = -1; +static gint ett_hash_assignment_buckets = -1; +static gint ett_mask_assignment_data_element = -1; +static gint ett_alternate_mask_assignment_data_element = -1; +static gint ett_extended_assigment_data_element = -1; +static gint ett_table_element = -1; +static gint ett_hash_flags = -1; +static gint ett_wc_identity_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_service_info_ports = -1; +static gint ett_wc_view_info_router_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_hash_buckets_assignment_wc_element=-1; +static gint ett_hash_buckets_assignment_buckets=-1; +static gint ett_router_alt_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_capability_transmit_t = -1; +static gint ett_capability_timer_scale = -1; +static gint ett_alt_assignment_info = -1; +static gint ett_alt_assignment_map = -1; +static gint ett_address_table = -1; +static gint ett_assignment_map = -1; +static gint ett_command_extension = -1; +static gint ett_alternate_mask_value_set=-1; +static gint ett_alternate_mask_value_set_element=-1; +static gint ett_mv_set_list = -1; +static gint ett_mv_set_element = -1; +static gint ett_mv_set_value_list = -1; +static gint ett_alternate_mv_set_element_list = -1; +static gint ett_web_cache_value_element_list = -1; +static gint ett_alternate_mv_set_element = -1; +static gint ett_value_element = -1; +static gint ett_unknown_info = -1; + +static expert_field ei_wccp_missing_security_info = EI_INIT; +static expert_field ei_wccp_missing_service_info = EI_INIT; +static expert_field ei_wccp_missing_wc_id_info = EI_INIT; +static expert_field ei_wccp_missing_router_id_info = EI_INIT; +static expert_field ei_wccp_missing_query_info = EI_INIT; +static expert_field ei_wccp_missing_wc_view_info = EI_INIT; +static expert_field ei_wccp_missing_rtr_view_info = EI_INIT; +static expert_field ei_wccp_contains_redirect_assignment = EI_INIT; +static expert_field ei_wccp_contains_router_id_info = EI_INIT; +static expert_field ei_wccp_contains_rtr_view_info = EI_INIT; +static expert_field ei_wccp_contains_query_info = EI_INIT; +static expert_field ei_wccp_contains_alt_assignment = EI_INIT; +static expert_field ei_wccp_contains_assign_map = EI_INIT; +static expert_field ei_wccp_contains_alt_assignment_map = EI_INIT; +static expert_field ei_wccp_contains_wc_id_info = EI_INIT; +static expert_field ei_wccp_contains_wc_view_info = EI_INIT; +static expert_field ei_wccp_contains_capabilities_info = EI_INIT; +static expert_field ei_wccp_contains_command_extension = EI_INIT; +static expert_field ei_wccp_missing_assignment = EI_INIT; +static expert_field ei_wccp_assignment_length_bad = EI_INIT; +static expert_field ei_wccp_length_bad = EI_INIT; +static expert_field ei_wccp_service_info_priority_nonzero = EI_INIT; +static expert_field ei_wccp_service_info_protocol_nonzero = EI_INIT; +static expert_field ei_wccp_router_identity_receive_id_zero = EI_INIT; +static expert_field ei_wccp_web_cache_identity_hash_rev_zero = EI_INIT; +static expert_field ei_wccp_address_table_family_unknown = EI_INIT; +static expert_field ei_wccp_capability_element_length = EI_INIT; +static expert_field ei_wccp_port_fields_not_used = EI_INIT; +static expert_field ei_wccp_a_zero_not_c = EI_INIT; +/* static expert_field ei_wccp_c_zero_not_a = EI_INIT; */ + +/* + * At + * + * https://datatracker.ietf.org/doc/html/draft-forster-wrec-wccp-v1-00 + * + * is the now-expired Internet-Draft for WCCP 1.0 (Web Cache Coordination + * Protocol V1.0). + * + * At + * + * https://datatracker.ietf.org/doc/html/draft-wilson-wrec-wccp-v2-01 + * + * is the now-expired Internet-Draft for WCCP 2.0 (Web Cache Communication + * Protocol V2.0). + * + * https://datatracker.ietf.org/doc/html/draft-param-wccp-v2rev1-01 + * + * is the now-expired Internet-Draft for WCCP 2.01 (Web Cache Communication + * Protocol V2, Revision 1). + */ + +/* This is NOT IANA assigned */ +#define UDP_PORT_WCCP 2048 + +#define WCCPv1 4 +#define WCCPv2 0x0200 +#define WCCPv2r1 0x0201 +#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"}, + { WCCPv2r1, "2.01"}, + { 0, NULL} +}; + +static const true_false_string tfs_src_dest_port = { "Source port", "Destination port" }; +static const true_false_string tfs_redirect_protocol0 = { "Redirect only protocol 0 (IP)", "Redirect all traffic" }; +static const true_false_string tfs_historical_current = { "Historical", "Current" }; +static const true_false_string tfs_version_min_max = {"WCCP version set is maximum supported by CE", "WCCP version set is minimum supported by CE"}; + +static const value_string wccp_address_family_val[] = { + { 0, "Reserved" }, + { 1, "IPv4" }, + { 2, "IPv6" }, + { 0, NULL } +}; + + +#define WCCP2_HASH_ASSIGNMENT_TYPE 0 +#define WCCP2_MASK_ASSIGNMENT_TYPE 1 +#define WCCP2r1_ALT_MASK_ASSIGNMENT_TYPE 2 +#define WCCP2r1_ASSIGNMENT_WEIGHT_STATUS 3 + +static const value_string assignment_type_vals[] = { + { WCCP2_HASH_ASSIGNMENT_TYPE, "Hash" }, + { WCCP2_MASK_ASSIGNMENT_TYPE, "Mask" }, + { WCCP2r1_ALT_MASK_ASSIGNMENT_TYPE, "WCCP2r1 Alternate Mask"}, + { WCCP2r1_ASSIGNMENT_WEIGHT_STATUS, "WCCP2r1 Assignment Weight Status"}, + { 0, NULL } +}; + +#define HASH_INFO_SIZE (4*(1+8+1)) + +#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 +/* WCCP 2 r1 additions: */ +#define WCCP2r1_ALT_ASSIGNMENT_MAP 16 +#define WCCP2r1_ADDRESS_TABLE 17 + + 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, "Router Query Info" }, + { WCCP2_CAPABILITIES_INFO, "Capabilities Info" }, + { WCCP2_ALT_ASSIGNMENT, "Alternate Assignment" }, + { WCCP2_ASSIGN_MAP, "Assignment Map" }, + { WCCP2_COMMAND_EXTENSION, "Command Extension" }, + { WCCP2r1_ALT_ASSIGNMENT_MAP, "Alternative Assignment Map" }, + { WCCP2r1_ADDRESS_TABLE, "Address Table" }, + { 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; + + + + +#define WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_HASH 0 +#define WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_MASK 1 +#define WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_NOT_PRESENT 2 +#define WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_EXTENDED 3 + +static const value_string wccp_web_cache_assignment_data_type_val[] = { + { WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_HASH , "Hash Assignment Data Element"}, + { WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_MASK , "Mask Assignment Data Element"}, + { WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_NOT_PRESENT , "Assignment Data Element Not Present"}, + { WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_EXTENDED , "Extended Assignment Data Element"}, + { 0, NULL } +}; + +#define WCCP2_FORWARDING_METHOD 0x01 +#define WCCP2_ASSIGNMENT_METHOD 0x02 +#define WCCP2_PACKET_RETURN_METHOD 0x03 +#define WCCP2_TRANSMIT_T 0x04 +#define WCCP2_TIMER_SCALE 0x05 + +static const value_string capability_type_vals[] = { + { WCCP2_FORWARDING_METHOD, "Forwarding Method" }, + { WCCP2_ASSIGNMENT_METHOD, "Assignment Method" }, + { WCCP2_PACKET_RETURN_METHOD, "Packet Return Method" }, + { WCCP2_TRANSMIT_T, "Transmit_t Message interval values"}, + { WCCP2_TIMER_SCALE, "Timer_scale Timeout scale values"}, + { 0, NULL } +}; + + +/* with version 2.01 we now have a address table which is possibly present */ + +typedef struct wccp_address_table { + gboolean in_use; + gint16 family; + gint16 version; + guint16 table_length; + guint32 *table_ipv4; + ws_in6_addr *table_ipv6; +} wccp_address_table; + +static int wccp_bucket_info(guint8 bucket_info, proto_tree *bucket_tree, + guint32 start, tvbuff_t *tvb, int offset); + +/* The V2 dissectors will return the remaining length of the packet + and a negative number if there are missing bytes to finish the + dissection */ +static gint dissect_wccp2_mask_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2_hash_buckets_assignment_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2r1_address_table_info(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, + wccp_address_table* wccp_wccp_address_table); +static gint dissect_wccp2_hash_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree); +static gint dissect_wccp2_assignment_weight_and_status_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree); +static gint dissect_wccp2_extended_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2_capability_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, proto_tree *info_tree); +static gint dissect_wccp2_mask_value_set_list(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table); + +/* Utility functions */ +static gint dissect_wccp2_mask_value_set_element(tvbuff_t *tvb, int offset, + gint length, int idx, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2_alternate_mask_value_set_list(tvbuff_t *tvb, int offset, + gint length, packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2_alternate_mask_value_set_element(tvbuff_t *tvb, int offset, gint length, guint el_index, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table); +static gint dissect_wccp2_web_cache_value_element(tvbuff_t *tvb, int offset, + gint length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table); +static void dissect_32_bit_capability_flags(tvbuff_t *tvb, int curr_offset, + guint16 capability_val_len, gint ett, const capability_flag *flags, + proto_tree *element_tree, proto_item *header, + proto_item *length_item, packet_info *pinfo); +static void dissect_transmit_t_capability(tvbuff_t *tvb, proto_item *te, int curr_offset, + guint16 capability_val_len, gint ett, proto_tree *element_tree, + proto_item *length_item, packet_info *pinfo); +static void dissect_timer_scale_capability(tvbuff_t *tvb, int curr_offset, + guint16 capability_val_len, gint ett, proto_tree *element_tree, + proto_item *length_item, packet_info *pinfo); + + + + +/* + * In WCCP 2.01 addresses are encoded to support IPv6 with 32 bit fields + * + * handle the decoding + */ + +static void +find_wccp_address_table(tvbuff_t *tvb, int offset, + packet_info *pinfo, proto_tree *wccp_tree _U_, wccp_address_table* wccp_wccp_address_table) +{ + guint16 type; + guint16 item_length; + + for (;;) { + if (4 > tvb_reported_length_remaining(tvb, offset)) { + /* We've run out of packet data without finding an address table, + so there's no address table in the packet. */ + return; + } + type = tvb_get_ntohs(tvb, offset); + item_length = tvb_get_ntohs(tvb, offset+2); + + if ((item_length + 4) > tvb_reported_length_remaining(tvb, offset)) { + /* We've run out of packet data without finding an address table, + so there's no address table in the packet. */ + return; + } + + if (type == WCCP2r1_ADDRESS_TABLE) + { + dissect_wccp2r1_address_table_info(tvb, offset+4, item_length, pinfo, NULL, wccp_wccp_address_table); + /* no need to decode the rest */ + return; + } + + offset = offset + (item_length + 4); + } +} + + +/* This function prints the IP or the encoded IP if the table exists */ + +/* at most an IPv6 IP: see + http://stackoverflow.com/questions/166132/maximum-length-of-the-textual-representation-of-an-ipv6-address + + 39 = 8 groups of 4 digits with 7 : characters + + or + + 45 = IPv4 tunnel features: 0000:0000:0000:0000:0000:0000:192.168.0.1 +*/ + +/* problem here is that the IP is in network byte order for IPv4 + we need to fix that +*/ + +static const gchar * decode_wccp_encoded_address(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *info_tree _U_, wccp_address_table* addr_table) +{ + guint32 host_addr; + gchar *buffer; + + /* are we using an address table? */ + if (!addr_table->in_use) + { + /* no; return the IPv4 IP */ + host_addr = tvb_get_ipv4(tvb,offset); + buffer = (char *) wmem_alloc(wmem_packet_scope(), WS_INET_ADDRSTRLEN); + ip_to_str_buf( (guint8 *) &host_addr, buffer, WS_INET_ADDRSTRLEN); + } + else + { + /* yes; we need to decode the encoded address */ + guint16 reserv; + guint16 addr_index; + + host_addr = tvb_get_ntohl(tvb,offset); + reserv = (host_addr & 0xFFFF0000) >> 16; + addr_index = (host_addr & 0x0000FFFF); + + if (reserv != 0) { + buffer = wmem_strdup(wmem_packet_scope(), "INVALID: reserved part non zero"); + } + else { + /* now check if it's IPv4 or IPv6 we need to print */ + switch (addr_table->family) { + case 1: + /* IPv4 */ + + /* special case: index 0 -> undefined IP */ + if (addr_index == 0) { + buffer = wmem_strdup(wmem_packet_scope(), "0.0.0.0"); + break; + } + /* are we be beyond the end of the table? */ + if (addr_index > addr_table->table_length) { + buffer = wmem_strdup_printf(wmem_packet_scope(), "INVALID IPv4 index: %d > %d", + addr_index, addr_table->table_length); + break; + } + + /* ok get the IP */ + if (addr_table->table_ipv4 != NULL) { + buffer = (char *) wmem_alloc(wmem_packet_scope(), WS_INET_ADDRSTRLEN); + ip_to_str_buf( (guint8 *) &(addr_table->table_ipv4[addr_index-1]), buffer, WS_INET_ADDRSTRLEN); + } + else { + buffer = wmem_strdup(wmem_packet_scope(), "INVALID IPv4 table empty!"); + } + break; + case 2: + /* IPv6 */ + /* special case: index 0 -> undefined IP */ + if (addr_index == 0) { + buffer = wmem_strdup(wmem_packet_scope(), "::"); + break; + } + + /* are we be beyond the end of the table? */ + if (addr_index > addr_table->table_length) { + buffer = wmem_strdup_printf(wmem_packet_scope(), "INVALID IPv6 index: %d > %d", + addr_index, addr_table->table_length); + break; + } + + /* ok get the IP */ + if (addr_table->table_ipv6 != NULL) { + buffer = (char *) wmem_alloc(wmem_packet_scope(), WS_INET6_ADDRSTRLEN); + ip6_to_str_buf(&(addr_table->table_ipv6[addr_index-1]), buffer, WS_INET6_ADDRSTRLEN); + } + else { + buffer = wmem_strdup(wmem_packet_scope(), "INVALID IPv6 table empty!"); + } + break; + default: + buffer = wmem_strdup(wmem_packet_scope(), "INVALID IP family"); + break; + } + } + } + + return buffer; +} + +static proto_item* wccp_add_ipaddress_item(proto_tree* tree, int hf_index, int hf_ipv4, int hf_ipv6, tvbuff_t *tvb, + int offset, gint length, wccp_address_table* addr_table) +{ + guint32 host_addr; + ws_in6_addr ipv6_zero; + guint16 reserv, addr_index; + + /* are we using an address table? */ + if (! addr_table->in_use) + return proto_tree_add_item(tree, hf_ipv4, tvb, offset, length, ENC_BIG_ENDIAN); + + host_addr = tvb_get_ntohl(tvb, offset); + + /* we need to decode the encoded address: */ + reserv = (host_addr & 0xFFFF0000) >> 16; + addr_index = (host_addr & 0x0000FFFF); + + memset(&ipv6_zero, 0, sizeof(ipv6_zero)); + + if (reserv != 0) + return proto_tree_add_uint_format_value(tree, hf_index, tvb, offset, length, host_addr, "INVALID: reserved part non zero"); + + /* now check if it's IPv4 or IPv6 we need to print */ + switch (addr_table->family) { + case 1: + /* IPv4 */ + + /* special case: index 0 -> undefined IP */ + if (addr_index == 0) { + return proto_tree_add_item(tree, hf_ipv4, tvb, offset, length, ENC_LITTLE_ENDIAN); + } + /* are we be beyond the end of the table? */ + if (addr_index > addr_table->table_length) { + return proto_tree_add_uint_format_value(tree, hf_index, tvb, offset, length, host_addr, + "INVALID IPv4 index: %d > %d", addr_index, addr_table->table_length); + } + + /* ok get the IP */ + if (addr_table->table_ipv4 != NULL) { + return proto_tree_add_ipv4(tree, hf_ipv4, tvb, offset, length, addr_table->table_ipv4[addr_index-1]); + } + + return proto_tree_add_uint_format_value(tree, hf_index, tvb, offset, length, host_addr, "INVALID: IPv4 table empty!"); + + case 2: + /* IPv6 */ + /* special case: index 0 -> undefined IP */ + if (addr_index == 0) { + return proto_tree_add_ipv6(tree, hf_ipv6, tvb, offset, length, &ipv6_zero); + } + + /* are we be beyond the end of the table? */ + if (addr_index > addr_table->table_length) { + return proto_tree_add_uint_format_value(tree, hf_index, tvb, offset, length, host_addr, + "INVALID IPv6 index: %d > %d", addr_index, addr_table->table_length); + } + + /* ok get the IP */ + if (addr_table->table_ipv6 != NULL) { + return proto_tree_add_ipv6(tree, hf_ipv6, tvb, offset, length, &(addr_table->table_ipv6[addr_index-1])); + } + + return proto_tree_add_uint_format_value(tree, hf_index, tvb, offset, length, host_addr, + "INVALID IPv6 table empty!"); + } + + return proto_tree_add_ipv4_format(tree, hf_index, tvb, offset, length, host_addr, "INVALID IP family"); +} + +#define WCCP_IP_MAX_LENGTH (WS_INET_ADDRSTRLEN > 46 ? WS_INET_ADDRSTRLEN : 46) + + +static guint +dissect_hash_data(tvbuff_t *tvb, int offset, proto_tree *wccp_tree) +{ + proto_tree *bucket_tree; + proto_item *tf; + proto_tree *field_tree; + int i; + guint8 bucket_info; + int n; + + proto_tree_add_item(wccp_tree, hf_hash_revision, tvb, offset, 4, + ENC_BIG_ENDIAN); + offset += 4; + + bucket_tree = proto_tree_add_subtree(wccp_tree, tvb, offset, 32, + ett_buckets, NULL, "Hash information"); + + 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_hash_flags); + proto_tree_add_item(field_tree, hf_hash_flag_u, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + return offset; +} + +static guint +dissect_web_cache_list_entry(tvbuff_t *tvb, int offset, int idx, + proto_tree *wccp_tree) +{ + proto_tree *list_entry_tree; + + list_entry_tree = proto_tree_add_subtree_format(wccp_tree, tvb, offset, 4 + HASH_INFO_SIZE, + ett_cache_info, NULL, "Web-Cache List Entry(%d)", idx); + proto_tree_add_item(list_entry_tree, hf_cache_ip, tvb, offset, 4, + ENC_BIG_ENDIAN); + offset += 4; + offset = dissect_hash_data(tvb, offset, list_entry_tree); + return offset; +} + +/* + * 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 int +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_uint_format(bucket_tree, hf_bucket_bit, tvb, offset, 1, bucket_info & 1<<i, + "Bucket %3d: %s", start, (bucket_info & 1<<i ? "Assigned" : "Not Assigned") ); + start++; + } + return(start); +} + + +/* the following functions all need to check the length and the offset + so we have a few macros to use +*/ + +#define EAT(x) {length -= x; offset += x;} + +#define EAT_AND_CHECK(x,next) {length -= x; offset += x; if (length < next) return length - next;} + +#define CHECK_LENGTH_ADVANCE_OFFSET(new_length) { \ + int old_offset = offset; \ + if (new_length<0) return new_length; \ + offset += length-new_length; \ + if (old_offset >= offset) return offset - old_offset; \ + length = new_length; \ + } + + +/* 5.1.1 Security Info Component */ + +/* Security options */ + +#define WCCP2_NO_SECURITY 0 +#define WCCP2_MD5_SECURITY 1 + +#define SECURITY_INFO_LEN 4 + +static const value_string security_option_vals[] = { + { WCCP2_NO_SECURITY, "None" }, + { WCCP2_MD5_SECURITY, "MD5" }, + { 0, NULL } +}; + + +static gint +dissect_wccp2_security_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table _U_) +{ + guint32 security_option; + + if (length < SECURITY_INFO_LEN) + return (length-SECURITY_INFO_LEN); + + security_option = tvb_get_ntohl(tvb, offset); + proto_tree_add_item(info_tree, hf_security_info_option, tvb, offset, 4, ENC_BIG_ENDIAN); + + if (security_option == WCCP2_MD5_SECURITY) { + offset += 4; + + proto_tree_add_item(info_tree, hf_security_info_md5_checksum, tvb, offset, length-4, ENC_NA); + + return length-4-16; + } + return length-4; +} + + +/* 5.1.2 Service Info Component */ + +#define SERVICE_INFO_LEN (4+4+8*2) + +#define WCCP2_SERVICE_STANDARD 0 +#define WCCP2_SERVICE_DYNAMIC 1 + +static const value_string service_type_vals[] = { + { WCCP2_SERVICE_STANDARD, "Standard predefined service"}, + { WCCP2_SERVICE_DYNAMIC, "Dynamic CE defined service" }, + { 0, NULL } +}; + +/* + * Service flags. + */ +#define WCCP2_SI_SRC_IP_HASH 0x00000001 +#define WCCP2_SI_DST_IP_HASH 0x00000002 +#define WCCP2_SI_SRC_PORT_HASH 0x00000004 +#define WCCP2_SI_DST_PORT_HASH 0x00000008 +#define WCCP2_SI_PORTS_DEFINED 0x00000010 +#define WCCP2_SI_PORTS_SOURCE 0x00000020 +#define WCCP2r1_SI_REDIRECT_ONLY_PROTOCOL_0 0x00000040 +#define WCCP2_SI_SRC_IP_ALT_HASH 0x00000100 +#define WCCP2_SI_DST_IP_ALT_HASH 0x00000200 +#define WCCP2_SI_SRC_PORT_ALT_HASH 0x00000400 +#define WCCP2_SI_DST_PORT_ALT_HASH 0x00000800 + + +static gint +dissect_wccp2_service_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table _U_) +{ + guint8 service_type; + guint32 flags; + proto_item *tf; + proto_tree *ports_tree; + int i; + int max_offset = offset+length; + + static int * const flag_fields[] = { + &hf_service_info_flags_src_ip_hash, + &hf_service_info_flags_dest_ip_hash, + &hf_service_info_flags_src_port_hash, + &hf_service_info_flags_dest_port_hash, + &hf_service_info_flags_ports_defined, + &hf_service_info_flags_ports_source, + &hf_service_info_flags_redirect_only_protocol_0, + &hf_service_info_flags_src_ip_alt_hash, + &hf_service_info_flags_dest_ip_alt_hash, + &hf_service_info_flags_src_port_alt_hash, + &hf_service_info_flags_dest_port_alt_hash, + &hf_service_info_flags_reserved, + NULL + }; + + if (length != SERVICE_INFO_LEN) + return length - SERVICE_INFO_LEN; + + service_type = tvb_get_guint8(tvb, offset); + proto_tree_add_item(info_tree, hf_service_info_type, tvb, + offset, 1, ENC_BIG_ENDIAN); + + switch (service_type) { + + case WCCP2_SERVICE_STANDARD: + proto_tree_add_item(info_tree, hf_service_info_id_standard, tvb, + offset +1 , 1, ENC_BIG_ENDIAN); + + tf = proto_tree_add_item(info_tree, hf_service_info_priority, tvb, offset+2, 1, ENC_BIG_ENDIAN); + if (tvb_get_guint8(tvb, offset+2) != 0) + expert_add_info(pinfo, tf, &ei_wccp_service_info_priority_nonzero); + + tf = proto_tree_add_item(info_tree, hf_service_info_protocol, tvb, + offset+3, 1, ENC_BIG_ENDIAN); + + if (tvb_get_guint8(tvb, offset+3) != 0) + expert_add_info(pinfo, tf, &ei_wccp_service_info_protocol_nonzero); + break; + + case WCCP2_SERVICE_DYNAMIC: + proto_tree_add_item(info_tree, hf_service_info_id_dynamic, tvb, + offset +1 , 1, ENC_BIG_ENDIAN); + proto_tree_add_item(info_tree, hf_service_info_priority, tvb, + offset+2, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(info_tree, hf_service_info_protocol, tvb, + offset+3, 1, ENC_BIG_ENDIAN); + break; + } + offset += 4; + + flags = tvb_get_ntohl(tvb, offset); + proto_tree_add_bitmask(info_tree, tvb, offset, hf_service_info_flags, ett_service_flags, flag_fields, ENC_BIG_ENDIAN); + + offset += 4; + + if (flags & WCCP2_SI_PORTS_DEFINED) { + ports_tree = proto_tree_add_subtree(info_tree, tvb, offset, 2*8, + ett_service_info_ports, &tf, "Ports list: "); + + for (i = 0; i < 8; i++) { + guint16 port = tvb_get_ntohs(tvb, offset); + + if (port) { + if (flags & WCCP2_SI_SRC_PORT_HASH) + proto_tree_add_item(ports_tree, hf_service_info_source_port, tvb, offset, 2, ENC_BIG_ENDIAN); + else + proto_tree_add_item(ports_tree, hf_service_info_destination_port, tvb, offset, 2, ENC_BIG_ENDIAN); + proto_item_append_text(tf, " %d", port); + } + offset += 2; + DISSECTOR_ASSERT(offset <= max_offset); + } + } + else { + /* just use up the space if there is */ + if (offset + 8 * 2 <= max_offset) { + proto_tree_add_expert(info_tree, pinfo, &ei_wccp_port_fields_not_used, tvb, offset, 8*2); + /*offset += 8*2;*/ + } + } + + return length - SERVICE_INFO_LEN; +} + +/* 6.1 Router Identity Element */ +static void +dissect_wccp2_router_identity_element(tvbuff_t *tvb, int offset, packet_info *pinfo, + proto_tree *tree, wccp_address_table* addr_table) +{ + proto_item *tf; + + + wccp_add_ipaddress_item(tree, hf_router_identity_ip_index, hf_router_identity_ipv4, hf_router_identity_ipv6, tvb, offset, 4, addr_table); + tf = proto_tree_add_item(tree, hf_router_identity_receive_id, tvb, offset+4, 4, ENC_BIG_ENDIAN); + + if (tvb_get_ntohl(tvb, offset + 4) == 0) + expert_add_info(pinfo, tf, &ei_wccp_router_identity_receive_id_zero); +} + +#define ROUTER_ID_INFO_MIN_LEN (8+4+4) + +/* 5.3.1 Router Identity Info Component */ +static gint +dissect_wccp2_router_identity_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 n_received_from; + guint i; + proto_item *te; + proto_tree *element_tree; + + if (length < 8) + return length - ROUTER_ID_INFO_MIN_LEN; + + + te = wccp_add_ipaddress_item(info_tree, hf_router_identity_router_ip_index, hf_router_identity_router_ipv4, hf_router_identity_router_ipv6, tvb, offset, 4, addr_table); + + element_tree = proto_item_add_subtree(te,ett_wc_view_info_router_element); + + dissect_wccp2_router_identity_element(tvb,offset,pinfo,element_tree, addr_table); + EAT_AND_CHECK(8,4); + + wccp_add_ipaddress_item(info_tree, hf_router_identity_send_to_ip_index, hf_router_identity_send_to_ipv4, hf_router_identity_send_to_ipv6, tvb, offset, 4, addr_table); + EAT_AND_CHECK(4,4); + + n_received_from = tvb_get_ntohl(tvb, offset); + proto_tree_add_item(info_tree, hf_router_identity_received_from_num, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT(4); + + for (i = 0; i < n_received_from; i++) { + if (length < 4) + return length-4*(i-n_received_from); + + + wccp_add_ipaddress_item(info_tree, hf_router_identity_received_from_ip_index, hf_router_identity_received_from_ipv4, hf_router_identity_received_from_ipv6, tvb, offset, 4, addr_table); + EAT(4); + } + + return length; +} + +#define ROUTER_WC_ID_ELEMENT_MIN_LEN (4+2+2) + +/* 6.4 Web-Cache Identity Element */ +static gint +dissect_wccp2_web_cache_identity_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_item *tf; + guint16 flags; + guint data_element_type; + + static int * const flag_fields[] = { + &hf_web_cache_identity_flag_hash_info, + &hf_web_cache_identity_flag_assign_type, + &hf_web_cache_identity_flag_version_request, + &hf_web_cache_identity_flag_reserved, + NULL + }; + + if (length < ROUTER_WC_ID_ELEMENT_MIN_LEN) + return length - ROUTER_WC_ID_ELEMENT_MIN_LEN; + + wccp_add_ipaddress_item(info_tree, hf_web_cache_identity_index, hf_web_cache_identity_ipv4, hf_web_cache_identity_ipv6, tvb, offset, 4, addr_table); + EAT_AND_CHECK(4,2); + + tf = proto_tree_add_item(info_tree, hf_web_cache_identity_hash_rev, tvb, offset, 2, ENC_BIG_ENDIAN); + if (tvb_get_ntohs(tvb, offset) != 0) + expert_add_info(pinfo, tf, &ei_wccp_web_cache_identity_hash_rev_zero); + + EAT_AND_CHECK(2,2); + + flags = tvb_get_ntohs(tvb, offset); + data_element_type = (flags & 0x6) >> 1; + proto_tree_add_bitmask(info_tree, tvb, offset, hf_web_cache_identity_flags, ett_wc_identity_flags, flag_fields, ENC_BIG_ENDIAN); + + EAT(2); + + switch (data_element_type) { + case WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_HASH: + return dissect_wccp2_hash_assignment_data_element(tvb,offset,length,pinfo,info_tree); + case WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_MASK: + return dissect_wccp2_mask_assignment_data_element(tvb,offset,length,pinfo,info_tree, addr_table); + + case WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_NOT_PRESENT: + proto_tree_add_item(info_tree, hf_assignment_no_data, tvb, offset, 2, ENC_NA); + return length; + break; + case WCCP2_WEB_CACHE_ASSIGNMENT_DATA_TYPE_EXTENDED: + return dissect_wccp2_extended_assignment_data_element(tvb,offset,length,pinfo,info_tree, addr_table); + } + return length; +} + +/* 5.2.1 Web-Cache Identity Info Component */ +static gint +dissect_wccp2_wc_identity_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_item *te; + proto_tree *element_tree; + + te = wccp_add_ipaddress_item(info_tree, hf_wc_identity_ip_address_index, hf_wc_identity_ip_address_ipv4, hf_wc_identity_ip_address_ipv6, + tvb, offset, 4, addr_table); + + element_tree = proto_item_add_subtree(te, ett_wc_identity_element); + return dissect_wccp2_web_cache_identity_element(tvb, offset,length, pinfo, + element_tree, addr_table); +} + +/* 6.3 Assignment Key Element */ +static gint +dissect_wccp2_assignment_key_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo _U_, + proto_tree *info_tree, wccp_address_table* addr_table) +{ + if (length < 8) + return length -8; + + + wccp_add_ipaddress_item(info_tree, hf_assignment_key_ip_index, hf_assignment_key_ipv4, hf_assignment_key_ipv6, tvb, offset, 4, addr_table); + + EAT_AND_CHECK(4,4); + proto_tree_add_item(info_tree, hf_assignment_key_change_num, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT(4); + + return length; +} + + +#define ROUTER_VIEW_INFO_MIN_LEN (4+8+4+4) + +/* 5.3.2 Router View Info Component */ +static gint +dissect_wccp2_router_view_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 n_routers; + guint32 n_web_caches; + guint i; + proto_item *te; + proto_tree *element_tree; + gint new_length; + + if (length < ROUTER_VIEW_INFO_MIN_LEN) + return length - ROUTER_VIEW_INFO_MIN_LEN; + + proto_tree_add_item(info_tree, hf_router_view_member_change_num, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT(4); + + new_length=dissect_wccp2_assignment_key_element(tvb, offset, length, pinfo, info_tree, addr_table); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + n_routers = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_router_router_num, tvb, offset, 4, n_routers); + EAT(4); + + for (i = 0; i < n_routers; i++) { + if (length < 4) + return length - (n_routers-i)*4 - 4; + + wccp_add_ipaddress_item(info_tree, hf_router_view_ip_index, hf_router_view_ipv4, hf_router_view_ipv6, tvb, offset, 4, addr_table); + EAT(4); + } + + if (length < 4) + return length - 4; + + n_web_caches = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_wc_view_wc_num, tvb, offset, 4, n_web_caches); + EAT(4); + + for (i = 0; i < n_web_caches; i++) { + gint old_length; + old_length = length; + + if (length < 4) + return length - 4*(n_web_caches-i); + + te = wccp_add_ipaddress_item(info_tree, hf_router_query_info_ip_index, hf_router_query_info_ipv4, hf_router_query_info_ipv6, tvb, offset, 4, addr_table); + + element_tree = proto_item_add_subtree(te, ett_wc_identity_element); + length = dissect_wccp2_web_cache_identity_element(tvb, + offset, length, pinfo, + element_tree, addr_table); + if (length < 0) + return length; + + offset += old_length - length; + } + return length; +} + +#define WC_VIEW_INFO_MIN_LEN (4+4+4) + +/* 5.2.2 Web Cache View Info Component */ + +static gint +dissect_wccp2_web_cache_view_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 n_routers; + guint32 n_web_caches; + guint i; + proto_item *te; + proto_tree *element_tree; + + + if (length < WC_VIEW_INFO_MIN_LEN) + return length - WC_VIEW_INFO_MIN_LEN; + + + proto_tree_add_item(info_tree, hf_wc_view_info_change_num, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT_AND_CHECK(4,4); + + n_routers = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_wc_view_router_num, tvb, offset, 4, n_routers); + EAT(4); + + for (i = 0; i < n_routers; i++) { + if (length < 8) + return length -8 * (n_routers-i) - 4; + + te = wccp_add_ipaddress_item(info_tree, hf_wc_view_info_router_ip_index, hf_wc_view_info_router_ipv4, hf_wc_view_info_router_ipv6, tvb, offset, 4, addr_table); + /* also include the receive id in the object */ + proto_item_set_len(te, 8); + + element_tree = proto_item_add_subtree(te,ett_wc_view_info_router_element); + dissect_wccp2_router_identity_element(tvb, offset, pinfo, element_tree, addr_table); + EAT(8); + } + + if (length < 4) + return length - 4; + + n_web_caches = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_wc_view_wc_num, tvb, offset, 4, n_web_caches); + EAT(4); + + for (i = 0; i < n_web_caches; i++) { + if (length < 4) + return length - 4*(n_web_caches-i); + + wccp_add_ipaddress_item(info_tree, hf_wc_view_info_wc_ip_index, hf_wc_view_info_wc_ipv4, hf_wc_view_info_wc_ipv6, tvb, offset, 4, addr_table); + EAT(4); + } + return length; +} + +/* 6.2 Router Assignment Element */ +static void +dissect_wccp2_router_assignment_element(tvbuff_t *tvb, int offset, + gint length _U_, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + dissect_wccp2_router_identity_element(tvb,offset,pinfo,info_tree, addr_table); + EAT(8); + proto_tree_add_item(info_tree, hf_router_assignment_element_change_num, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT(4); +} + +static const gchar * +assignment_bucket_name(guint8 bucket) +{ + const gchar *cur; + + if (bucket == 0xff) { + cur= "Unassigned"; + } else { + cur=wmem_strdup_printf(wmem_packet_scope(), "%u%s", bucket & 0x7F, + (bucket & 0x80) ? " (Alt)" : ""); + } + return cur; +} + +#define ASSIGNMENT_INFO_MIN_LEN (8+4+4) + +/* 5.4.1 Assignment Info Component */ +static gint +dissect_wccp2_assignment_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 n_routers; + guint i; + proto_item *te; + proto_tree *element_tree; + gint new_length; + + if (length < ASSIGNMENT_INFO_MIN_LEN) + return length - ASSIGNMENT_INFO_MIN_LEN; + + + new_length=dissect_wccp2_assignment_key_element(tvb, offset, length, pinfo, info_tree, addr_table); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + n_routers = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_assignment_info_router_num, tvb, offset, 4, n_routers); + EAT(4); + + for (i = 0; i < n_routers; i++) { + if (length < 12) + return length - 12*(n_routers-i)-4-256; + + te = wccp_add_ipaddress_item(info_tree, hf_assignment_info_router_ip_index, hf_assignment_info_router_ipv4, hf_assignment_info_router_ipv6, tvb, offset, 4, addr_table); + + element_tree = proto_item_add_subtree(te, ett_router_assignment_element); + dissect_wccp2_router_assignment_element(tvb, offset, length , pinfo, + element_tree, addr_table); + EAT(12); + } + + new_length = dissect_wccp2_hash_buckets_assignment_element(tvb, offset, length, pinfo, info_tree, addr_table); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + return length; +} + + +#define QUERY_INFO_LEN (4+4+4+4) + +/* 5.5.1 Router Query Info Component */ +static gboolean +dissect_wccp2_router_query_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + if (length < QUERY_INFO_LEN) + return length - QUERY_INFO_LEN; + + dissect_wccp2_router_identity_element(tvb,offset,pinfo,info_tree, addr_table); + EAT_AND_CHECK(8,4); + + wccp_add_ipaddress_item(info_tree, hf_router_query_info_send_to_ip_index, hf_router_query_info_send_to_ipv4, hf_router_query_info_send_to_ipv6, tvb, offset, 4, addr_table); + EAT_AND_CHECK(4,4); + wccp_add_ipaddress_item(info_tree, hf_router_query_info_target_ip_index, hf_router_query_info_target_ipv4, hf_router_query_info_target_ipv6, tvb, offset, 4, addr_table); + EAT(4); + + return length; +} + +/* 6.5 Hash Buckets Assignment Element */ +static gint dissect_wccp2_hash_buckets_assignment_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 i,n_web_caches; + proto_item *te; + proto_tree *element_tree; + guint8 bucket; + + if (length < 4) + return length - 4; + + te = proto_tree_add_item_ret_uint(info_tree, hf_hash_buckets_assignment_wc_num, tvb, offset, 4, ENC_BIG_ENDIAN, &n_web_caches); + EAT(4); + + element_tree = proto_item_add_subtree(te,ett_hash_buckets_assignment_wc_element); + for (i = 0; i < n_web_caches; i++) { + proto_item *l_te; + + if (length < 4) + return length - 4*(n_web_caches-i)-256; + + l_te = wccp_add_ipaddress_item(element_tree, hf_hash_buckets_assignment_wc_ip_index, hf_hash_buckets_assignment_wc_ipv4, hf_hash_buckets_assignment_wc_ipv6, tvb, offset, 4, addr_table); + + proto_item_append_text(l_te, " id: %d", i); + EAT(4); + } + + element_tree = proto_tree_add_subtree(info_tree,tvb, offset, 256, ett_hash_buckets_assignment_buckets, NULL, "Buckets"); + + for (i = 0; i < 256; i++, offset++, length--) { + if (length < 1) + return length - (256-i); + bucket = tvb_get_guint8(tvb, offset); + proto_tree_add_uint_format(element_tree, hf_bucket, tvb, offset, 1, + bucket, "Bucket %3d: %10s", + i, assignment_bucket_name(bucket)); + } + return length; +} + +#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 } +}; + +#define WCCP2_COMMAND_TYPE_SHUTDOWN 1 +#define WCCP2_COMMAND_TYPE_SHUTDOWN_RESPONSE 2 + +static const value_string wccp_command_type_vals[] = { + { WCCP2_COMMAND_TYPE_SHUTDOWN, "CE shutting down" }, + { WCCP2_COMMAND_TYPE_SHUTDOWN_RESPONSE, "Router Acknowledge CE shutdown"}, + { 0, NULL } +}; + + + +/* 5.1.3 Capabilities Info Component */ + +static gint +dissect_wccp2_capability_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table _U_) +{ + gint capability_length; + + while (length >= 8) { + capability_length = dissect_wccp2_capability_element(tvb,offset,length,pinfo,info_tree); + + CHECK_LENGTH_ADVANCE_OFFSET(capability_length); + } + return length; +} + + +#define ALT_COMMAND_EXTENSION_MIN_LEN (4) + +/* 5.1.4 && 6.12 Command Extension Component */ + +static gint +dissect_wccp2_command_extension(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint16 command_type; + guint32 command_length; + + for (;;) { + if (length == 0) + return length; + + if (length < ALT_COMMAND_EXTENSION_MIN_LEN ) + return length - ALT_COMMAND_EXTENSION_MIN_LEN ; + + command_type = tvb_get_ntohs(tvb, offset); + proto_tree_add_item(info_tree, hf_command_element_type, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + + proto_tree_add_item_ret_uint(info_tree, hf_command_element_length, tvb, offset, 2, ENC_BIG_ENDIAN, &command_length); + proto_tree_add_item(info_tree, hf_command_length, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + + if (((command_type == WCCP2_COMMAND_TYPE_SHUTDOWN) || + (command_type == WCCP2_COMMAND_TYPE_SHUTDOWN_RESPONSE)) && + (command_length == 4)) { + if (length < 4) + return length - 4; + + wccp_add_ipaddress_item(info_tree, hf_command_element_shutdown_ip_index, hf_command_element_shutdown_ipv4, hf_command_element_shutdown_ipv6, tvb, offset, 4, addr_table); + } else { + if (length < (int)command_length) + return length - command_length; + + proto_tree_add_item(info_tree, hf_command_unknown, tvb, offset, command_length, ENC_NA); + } + EAT(command_length); + } +} + + +/* 5.1.5 Address Table Component */ +/* this function is special as it can be invoked twice during a packet decode: + once to get the tables, once to display them +*/ +static gint +dissect_wccp2r1_address_table_info(tvbuff_t *tvb, int offset, int length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* wccp_wccp_address_table) +{ + guint16 address_length; + guint32 i; + gint16 family; + guint16 table_length; + proto_tree *element_tree; + proto_item *tf; + + if (length < 2*4) + return length - 2*4; + + family = tvb_get_ntohs(tvb, offset); + proto_tree_add_item(info_tree, hf_address_table_family, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + + address_length = tvb_get_ntohs(tvb, offset); + proto_tree_add_item(info_tree, hf_address_table_address_length, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + + table_length = tvb_get_ntohl(tvb, offset); + tf = proto_tree_add_item(info_tree, hf_address_table_length, tvb, offset, 4, ENC_BIG_ENDIAN); + element_tree = proto_item_add_subtree(tf, ett_table_element); + EAT(4); + + if (wccp_wccp_address_table->in_use == FALSE) { + wccp_wccp_address_table->family = family; + wccp_wccp_address_table->table_length = table_length; + + /* check if the length is valid and allocate the tables if needed */ + switch (wccp_wccp_address_table->family) { + case 1: + if (wccp_wccp_address_table->table_ipv4 == NULL) + wccp_wccp_address_table->table_ipv4 = (guint32 *) + wmem_alloc0(pinfo->pool, wccp_wccp_address_table->table_length * 4); + if (address_length != 4) { + expert_add_info_format(pinfo, tf, &ei_wccp_length_bad, + "The Address length must be 4, but I found %d for IPv4 addresses. Correcting this.", + address_length); + address_length = 4; + } + break; + case 2: + if (wccp_wccp_address_table->table_ipv6 == NULL) + wccp_wccp_address_table->table_ipv6 = (ws_in6_addr *) + wmem_alloc0(pinfo->pool, wccp_wccp_address_table->table_length * sizeof(ws_in6_addr)); + if (address_length != 16) { + expert_add_info_format(pinfo, tf, &ei_wccp_length_bad, + "The Address length must be 16, but I found %d for IPv6 addresses. Correcting this.", + address_length); + address_length = 16; + } + break; + default: + expert_add_info_format(pinfo, tf, &ei_wccp_address_table_family_unknown, + "Unknown address family: %d", wccp_wccp_address_table->family); + }; + } + + /* now read the addresses and print/store them */ + + for(i=0; i<table_length; i++) { + const gchar *addr; + + switch (family) { + case 1: + /* IPv4 */ + addr = tvb_ip_to_str(pinfo->pool, tvb, offset); + if ((wccp_wccp_address_table->in_use == FALSE) && + (wccp_wccp_address_table->table_ipv4 != NULL) && + (i < wccp_wccp_address_table->table_length)) + wccp_wccp_address_table->table_ipv4[i] = tvb_get_ipv4(tvb, offset); + break; + case 2: + /* IPv6 */ + addr = tvb_ip6_to_str(pinfo->pool, tvb, offset); + if ((wccp_wccp_address_table->in_use == FALSE) && + (wccp_wccp_address_table->table_ipv6 != NULL) && + (i < wccp_wccp_address_table->table_length)) + tvb_get_ipv6(tvb, offset, &(wccp_wccp_address_table->table_ipv6[i])); + break; + default: + addr = wmem_strdup_printf(wmem_packet_scope(), "unknown family %d", wccp_wccp_address_table->family); + }; + + if (element_tree) { + proto_item *pi; + + pi = proto_tree_add_string_format_value(element_tree, hf_address_table_element, tvb, + offset, address_length, addr, + "%d: %s", i+1, addr); + if (i > wccp_wccp_address_table->table_length) + expert_add_info_format(pinfo, pi, &ei_wccp_length_bad, "Ran out of space to store address"); + } + EAT(address_length); + } + + wccp_wccp_address_table->in_use = TRUE; + return length; +} + + + + + +#define HASH_ASSIGNMENT_INFO_MIN_LEN (4+256) + +/* part of 5.6.11 Alternate Assignment Component */ +static gint +dissect_wccp2_hash_assignment_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint32 n_web_caches, host_addr; + guint i; + guint8 bucket; + + if (length < HASH_ASSIGNMENT_INFO_MIN_LEN) + return length - ASSIGNMENT_INFO_MIN_LEN; + + proto_tree_add_item_ret_uint(info_tree, hf_wc_view_wc_num, tvb, offset, 4, ENC_BIG_ENDIAN, &n_web_caches); + EAT(4); + + for (i = 0; i < n_web_caches; i++) { + if (length < 4) + return length - 4*(n_web_caches-i)-256; + + host_addr = tvb_get_ntohl(tvb,offset); + if (! addr_table->in_use){ + proto_tree_add_ipv4_format(info_tree, hf_cache_ip, tvb, offset, 4, host_addr, "Web-Cache %d: IP address %s", i, + decode_wccp_encoded_address(tvb, offset, pinfo, info_tree, addr_table)); + } else { + proto_tree_add_uint_format(info_tree, hf_web_cache_identity_index, tvb, offset, 4, host_addr, "Web-Cache %d: IP address %s", i, + decode_wccp_encoded_address(tvb, offset, pinfo, info_tree, addr_table)); + } + EAT(4); + } + + + for (i = 0; i < 256; i++, offset++, length--) { + if (length < 1) + return length - (256-i); + bucket = tvb_get_guint8(tvb, offset); + proto_tree_add_uint_format(info_tree, hf_bucket, tvb, offset, 1, + bucket, "Bucket %3d: %10s", + i, assignment_bucket_name(bucket)); + } + return length; +} + +/* 5.3.3 Assignment Map Component */ +static gint dissect_wccp2_assignment_map(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + gint new_length; + + new_length=dissect_wccp2_mask_value_set_list(tvb, offset, length, pinfo, info_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + return length; +} + + + +#define ALT_ASSIGNMENT_MAP_MIN_LEN (4) + +/* 5.3.4 Alternate Assignment Map Component */ +static gint +dissect_wccp2r1_alt_assignment_map_info(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint16 assignment_type; + guint16 assignment_length; + proto_item *tf=NULL; + + if (length < ALT_ASSIGNMENT_MAP_MIN_LEN ) + return length - ALT_ASSIGNMENT_MAP_MIN_LEN ; + + + assignment_type = tvb_get_ntohs(tvb, offset); + proto_tree_add_item(info_tree, hf_alt_assignment_map_assignment_type, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + + assignment_length = tvb_get_ntohs(tvb, offset); + tf=proto_tree_add_item(info_tree, hf_alt_assignment_map_assignment_length, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + + if (length < assignment_length) + expert_add_info_format(pinfo, tf, &ei_wccp_assignment_length_bad, + "Assignment length is %d but only %d remain in the packet. Ignoring this for now", + assignment_length, length); + + if (length > assignment_length) { + expert_add_info_format(pinfo, tf, &ei_wccp_assignment_length_bad, + "Assignment length is %d but %d remain in the packet. Assuming that the assignment length is wrong and setting it to %d.", + assignment_length, length, length); + assignment_length = length; + } + + switch (assignment_type) { + case WCCP2_HASH_ASSIGNMENT_TYPE: + return dissect_wccp2_assignment_info(tvb, offset, assignment_length, + pinfo, info_tree, addr_table); + case WCCP2_MASK_ASSIGNMENT_TYPE: + return dissect_wccp2_mask_value_set_list(tvb, offset, assignment_length, + pinfo, info_tree, addr_table); + case WCCP2r1_ALT_MASK_ASSIGNMENT_TYPE: + return dissect_wccp2_alternate_mask_value_set_list(tvb, offset, assignment_length, + pinfo, info_tree, addr_table); + default: + return length; + } +} + + + + + +/* 6.6 Hash Assignment Data Element */ +static gint +dissect_wccp2_hash_assignment_data_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, + proto_tree *info_tree) + +{ + proto_tree *bucket_tree; + int i; + guint8 bucket_info; + int n; + + + bucket_tree = proto_tree_add_subtree(info_tree, tvb, offset, 8*4, + ett_hash_assignment_buckets, NULL, "Hash Assignment Data"); + + for (i = 0, n = 0; i < 32; i++) { + if (length == 0) { + return -i-2-2; + } + + bucket_info = tvb_get_guint8(tvb, offset); + n = wccp_bucket_info(bucket_info, bucket_tree, n, tvb, offset); + EAT(1); + } + + if (length < 2){ + return -2-2; + } + + return dissect_wccp2_assignment_weight_and_status_element(tvb, offset, length, pinfo, info_tree); +} + +/* 6.7 Mask Assignment Data Element */ +static gint +dissect_wccp2_mask_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table) + +{ + proto_item *mask_item; + proto_tree *mask_tree; + gint new_length,start; + + + mask_tree = proto_tree_add_subtree(info_tree, tvb, offset, 4, + ett_mask_assignment_data_element, &mask_item, "Mask Assignment Data"); + start = offset; + + new_length=dissect_wccp2_mask_value_set_list(tvb, offset, length, pinfo, mask_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + if (length < 2) + return length-4; + + new_length = dissect_wccp2_assignment_weight_and_status_element(tvb, offset, length, pinfo, info_tree); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + proto_item_set_len(mask_item, offset-start); + return length; +} + + +/* 5.7.5 Alternate Mask Assignment Data Element */ +static gint +dissect_wccp2_alternate_mask_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_tree *mask_tree; + + mask_tree = proto_tree_add_subtree(info_tree, tvb, offset, length, + ett_alternate_mask_assignment_data_element, NULL, "Alternate Mask Assignment Data"); + + if (length < 4) + return length-4; + + if (length > 4) + for (;length >4;) + { + gint new_length; + + new_length=dissect_wccp2_alternate_mask_value_set_list(tvb, offset, length, pinfo, mask_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + } + + if (length < 2) + return -2; + + return dissect_wccp2_assignment_weight_and_status_element(tvb, offset, length, pinfo, info_tree); +} + + +/* 6.9 Assignment Weight and Status Data Element */ +static gint +dissect_wccp2_assignment_weight_and_status_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo _U_, + proto_tree *info_tree) + +{ + if (length < 4) + return length - 4; + + + proto_tree_add_item(info_tree, hf_assignment_weight, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + proto_tree_add_item(info_tree, hf_assignment_status, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + return length; +} + + +/* 6.10 Extended Assignment Data Element */ +static gint +dissect_wccp2_extended_assignment_data_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_item *element_item, *header; + proto_tree *item_tree; + + guint type_of_assignment; + + gint assignment_length; + + if (length < 4) + return length-4; + + + item_tree = proto_tree_add_subtree(info_tree, tvb, offset, length, + ett_extended_assigment_data_element, &header, "Extended Assignment Data Element"); + + type_of_assignment = tvb_get_ntohs(tvb, offset); + proto_tree_add_item(item_tree, hf_extended_assignment_data_type, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + + assignment_length = tvb_get_ntohs(tvb,offset); + element_item = proto_tree_add_item(item_tree, hf_extended_assignment_data_length, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + + if (length < assignment_length) + expert_add_info_format(pinfo, element_item, &ei_wccp_assignment_length_bad, + "Assignment length is %d but only %d remain in the packet. Ignoring this for now", + assignment_length, length); + + /* Now a common bug seems to be to set the assignment_length to the length -4 + check for this */ + if ((length > assignment_length) && + (length == (assignment_length + 4))) + { + expert_add_info_format(pinfo, element_item, &ei_wccp_assignment_length_bad, + "Assignment length is %d but %d remain in the packet. Assuming that this is wrong as this is only 4 bytes too small, proceeding with the assumption it is %d", + assignment_length, length, length); + assignment_length = length; + } + + + proto_item_set_len(header, assignment_length+4); + + switch (type_of_assignment) + { + case WCCP2_HASH_ASSIGNMENT_TYPE: + dissect_wccp2_hash_assignment_data_element(tvb, offset, assignment_length, + pinfo, item_tree); + return length - assignment_length; + case WCCP2_MASK_ASSIGNMENT_TYPE: + dissect_wccp2_mask_assignment_data_element(tvb, offset, assignment_length, + pinfo, item_tree, addr_table); + return length - assignment_length; + case WCCP2r1_ALT_MASK_ASSIGNMENT_TYPE: + dissect_wccp2_alternate_mask_assignment_data_element(tvb, offset, assignment_length, + pinfo, item_tree, addr_table); + return length - assignment_length; + case WCCP2r1_ASSIGNMENT_WEIGHT_STATUS: + dissect_wccp2_assignment_weight_and_status_element(tvb, offset, assignment_length, + pinfo, item_tree); + return length - assignment_length; + } + return length; +} + + + + + + +/* 6.11 Capability Element */ +static gint +dissect_wccp2_capability_element(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree) +{ + guint16 capability_type; + guint16 capability_val_len; + proto_item *te, *header, *tf; + proto_tree *element_tree; + + if (length < 4) + return length - 4; + + capability_type = tvb_get_ntohs(tvb, offset); + element_tree = proto_tree_add_subtree_format(info_tree, tvb, offset, -1, ett_capability_element, &te, + "Type: %s", + val_to_str(capability_type, + capability_type_vals, + "Unknown (0x%08X)")); + header = te; + + proto_tree_add_item(element_tree, hf_capability_element_type, tvb, offset, 2, ENC_BIG_ENDIAN); + + capability_val_len = tvb_get_ntohs(tvb, offset+2); + tf = proto_tree_add_uint(element_tree, hf_capability_element_length, tvb, offset+2, 2, capability_val_len); + proto_item_set_len(te, capability_val_len + 4); + + if (length < (4+capability_val_len)) + return length - (4 + capability_val_len); + + switch (capability_type) { + case WCCP2_FORWARDING_METHOD: + dissect_32_bit_capability_flags(tvb, offset, + capability_val_len, + ett_capability_forwarding_method, + forwarding_method_flags, element_tree, + header, tf, pinfo); + break; + + case WCCP2_ASSIGNMENT_METHOD: + dissect_32_bit_capability_flags(tvb, offset, + capability_val_len, + ett_capability_assignment_method, + assignment_method_flags, element_tree, + header, tf, pinfo); + break; + + case WCCP2_PACKET_RETURN_METHOD: + dissect_32_bit_capability_flags(tvb, offset, + capability_val_len, + ett_capability_return_method, + packet_return_method_flags, element_tree, + header, tf, pinfo); + break; + + case WCCP2_TRANSMIT_T: + dissect_transmit_t_capability(tvb, te, offset, + capability_val_len, + ett_capability_transmit_t, element_tree, + tf, pinfo); + break; + + case WCCP2_TIMER_SCALE: + dissect_timer_scale_capability(tvb, offset, + capability_val_len, + ett_capability_timer_scale, element_tree, + tf, pinfo); + break; + default: + proto_tree_add_item(element_tree, hf_capability_value, tvb, offset, capability_val_len, ENC_NA); + break; + } + return length - 4 - capability_val_len; +} + + +/* 6.13 Mask/Value Set List */ +static gint +dissect_wccp2_mask_value_set_list(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint num_of_elem; + guint i; + proto_item *te; + proto_tree *element_tree; + guint start; + + + if (length < 4) + return length - 4; + + element_tree = proto_tree_add_subtree(info_tree, tvb, offset, 4, ett_mv_set_list, &te, "Mask/Value Set List"); + start = offset; + + + num_of_elem = tvb_get_ntohl(tvb, offset); + proto_tree_add_item(element_tree, hf_mask_value_set_list_num_elements, + tvb, offset, 4, ENC_BIG_ENDIAN); + /* proto_tree_add_uint(element_tree, , tvb, offset, 4, num_of_elem); */ + EAT(4); + + for (i = 0; i < num_of_elem; i++) + { + gint new_length; + + new_length=dissect_wccp2_mask_value_set_element(tvb, offset, length, i, pinfo, element_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + } + + proto_item_set_len(te, offset-start); + return length; +} + + + + + +/* 6.15 Mask Element */ +static gint +dissect_wccp2_mask_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo _U_, proto_tree *info_tree) +{ + if (length < 2) + return length-12; + + proto_tree_add_item(info_tree, hf_mask_element_src_ip, tvb, offset, 4, ENC_BIG_ENDIAN); + EAT_AND_CHECK(4,4); + proto_tree_add_item(info_tree, hf_mask_element_dest_ip, tvb, offset, 4, ENC_BIG_ENDIAN); + + EAT_AND_CHECK(4,2); + proto_tree_add_item(info_tree, hf_mask_element_src_port, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + proto_tree_add_item(info_tree, hf_mask_element_dest_port, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + + return length; +} + + + + + + +/* 6.17 Alternate Mask/Value Set List */ +static gint dissect_wccp2_alternate_mask_value_set_list(tvbuff_t *tvb, int offset, + int length, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_tree *list_tree; + guint num_of_val_elements; + guint i; + + if (length < 4) + return length - 4; + + list_tree = proto_tree_add_subtree(info_tree, tvb, offset, length, + ett_alternate_mask_value_set, NULL, "Alternate Mask/Value Set List"); + + num_of_val_elements = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(list_tree, hf_alt_assignment_mask_value_set_list_num_elements, tvb, offset, 4, num_of_val_elements); + EAT(4); + + for(i=0;i<num_of_val_elements;i++) { + gint new_length; + + new_length=dissect_wccp2_alternate_mask_value_set_element(tvb, offset, length, i, pinfo, list_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + } + return length; +} + + +/* 6.18 Alternate Mask/Value Set Element */ +static gint +dissect_wccp2_alternate_mask_value_set_element(tvbuff_t *tvb, int offset, gint length, guint el_index, packet_info *pinfo, + proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_item *tl, *header; + proto_tree *element_tree, *value_tree; + guint number_of_elements; + gint new_length, total_length; + guint i; + + element_tree = proto_tree_add_subtree_format(info_tree, tvb, offset, 0, + ett_alternate_mask_value_set_element, &header, + "Alternate Mask/Value Set Element(%d)", el_index); + + total_length = 0; + + new_length=dissect_wccp2_mask_element(tvb,offset,length,pinfo,element_tree); + total_length += length - new_length; + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + if (length < 4) + return length - 4; + + number_of_elements = tvb_get_ntohl(tvb, offset); + tl = proto_tree_add_uint(element_tree, hf_alt_assignment_mask_value_set_element_num_wc_value_elements, tvb, offset, 4, number_of_elements); + value_tree = proto_item_add_subtree(tl, ett_alternate_mv_set_element_list); + total_length += 4; + EAT(4); + + /* XXX Add a bounds check for number_of_elements? */ + for (i=0; i < number_of_elements; i++) { + new_length=dissect_wccp2_web_cache_value_element(tvb, offset, length, pinfo, value_tree, addr_table); + total_length += length - new_length; + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + } + proto_item_set_len(header, total_length); + + return length; +} + +/* 6.19 Web-Cache Value Element */ +static gint +dissect_wccp2_web_cache_value_element(tvbuff_t *tvb, int offset, gint length, packet_info *pinfo _U_, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint number_of_elements, seq_num; + proto_item *tl; + proto_tree *element_tree; + guint i; + + if (length < 4) + return length - 8; + + tl = wccp_add_ipaddress_item(info_tree, hf_web_cache_value_element_wc_address_index, hf_web_cache_value_element_wc_address_ipv4, hf_web_cache_value_element_wc_address_ipv6, tvb, offset, 4, addr_table); + + element_tree = proto_item_add_subtree(tl, ett_web_cache_value_element_list); + EAT_AND_CHECK(4,4); + + number_of_elements = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(element_tree, hf_web_cache_value_element_num_values, tvb, offset, 4, number_of_elements); + EAT(4); + + for (i=0; i < number_of_elements; i++) { + if (length < 4) + return length - 4*(number_of_elements-i); + + seq_num = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint_format(element_tree, hf_web_cache_value_seq_num, tvb, offset, 4, + seq_num, "Value Sequence Number %d: %x", i+1, seq_num); + EAT(4); + } + + return length; +} + + +/* End of standard functions */ + + +static void +dissect_32_bit_capability_flags(tvbuff_t *tvb, int curr_offset, + guint16 capability_val_len, gint ett, const capability_flag *flags, + proto_tree *element_tree, proto_item *header, + proto_item *length_item, packet_info *pinfo) +{ + 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, length_item, &ei_wccp_capability_element_length, + "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); + proto_item_append_text( header, " (%s", flags[i].short_name); + first = FALSE; + } else { + proto_item_append_text( tm, ", %s", flags[i].short_name); + proto_item_append_text( header, " (%s", flags[i].short_name); + } + } + } + + if (first == FALSE) { + proto_item_append_text( tm, ")"); + proto_item_append_text( header, ")"); + } + + 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); +} + + + +/* 6.11.4 Capability Type WCCP2_TRANSMIT_T */ +static void +dissect_transmit_t_capability(tvbuff_t *tvb, proto_item *te, int curr_offset, + guint16 capability_val_len, gint ett, proto_tree *element_tree, + proto_item *length_item, packet_info *pinfo) +{ + guint16 upper_limit, lower_limit; + proto_tree *method_tree; + + if (capability_val_len != 4) { + expert_add_info_format(pinfo, length_item, &ei_wccp_capability_element_length, + "Value Length: %u (illegal, must be == 4)", capability_val_len); + return; + } + + upper_limit = tvb_get_ntohs(tvb, curr_offset); + lower_limit = tvb_get_ntohs(tvb, curr_offset + 2); + + if ( upper_limit == 0) { + method_tree = proto_tree_add_subtree(element_tree, tvb, curr_offset, 2, + ett, NULL, "Only accepting one value"); + proto_tree_add_uint(method_tree, hf_reserved_zero, tvb, curr_offset, 2, upper_limit); + + proto_tree_add_item(method_tree, hf_capability_transmit_t , tvb, curr_offset+2, 2, ENC_BIG_ENDIAN); + proto_item_append_text(te, " %d ms", lower_limit); + } else { + method_tree = proto_tree_add_subtree(element_tree, tvb, curr_offset, 2, + ett, NULL, "Accepting a range"); + proto_tree_add_item(method_tree, hf_capability_transmit_t_upper_limit, + tvb, curr_offset, 2, ENC_BIG_ENDIAN); + + proto_tree_add_item(method_tree, hf_capability_transmit_t_lower_limit, + tvb, curr_offset+2, 2, ENC_BIG_ENDIAN); + proto_item_append_text(te, " < %d ms > %d ms", lower_limit, upper_limit); + } +} + + +static void +dissect_timer_scale_capability(tvbuff_t *tvb, int curr_offset, + guint16 capability_val_len, gint ett, proto_tree *element_tree, + proto_item *length_item, packet_info *pinfo) +{ + guint8 a,c; + proto_tree *method_tree; + + if (capability_val_len != 4) { + expert_add_info_format(pinfo, length_item, &ei_wccp_capability_element_length, + "Value Length: %u (illegal, must be == 4)", capability_val_len); + return; + } + + a = tvb_get_guint8(tvb, curr_offset); + c = tvb_get_guint8(tvb, curr_offset+2); + + if ( a == 0) { + if ( c == 0) { + method_tree = proto_tree_add_subtree(element_tree, tvb, curr_offset, 2, + ett, NULL, "Only accepting one value"); + + proto_tree_add_uint(method_tree, hf_reserved_zero, tvb, curr_offset, 1, a); + + proto_tree_add_item(method_tree, hf_capability_timer_scale_timeout_scale, + tvb, curr_offset+1, 1, ENC_BIG_ENDIAN); + proto_tree_add_uint(method_tree, hf_reserved_zero, tvb, curr_offset+2, 1, c); + proto_tree_add_item(method_tree, hf_capability_timer_scale_ra_timer_scale, + tvb, curr_offset+3, 1, ENC_BIG_ENDIAN); + } else { + proto_tree_add_expert(element_tree, pinfo, &ei_wccp_a_zero_not_c, tvb, curr_offset, 1); + } + } else { + if ( c == 0) { + proto_tree_add_expert(element_tree, pinfo, &ei_wccp_a_zero_not_c, tvb, curr_offset, 1); + } else { + method_tree = proto_tree_add_subtree(element_tree, tvb, curr_offset, 2, + ett, NULL, "Accepting a range"); + proto_tree_add_item(method_tree, hf_capability_timer_scale_timeout_scale_upper_limit, + tvb, curr_offset, 1, ENC_BIG_ENDIAN); + + proto_tree_add_item(method_tree, hf_capability_timer_scale_timeout_scale_lower_limit, + tvb, curr_offset+1, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(method_tree, hf_capability_timer_scale_ra_scale_upper_limit, + tvb, curr_offset+2, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(method_tree, hf_capability_timer_scale_ra_scale_lower_limit, + tvb, curr_offset+3, 1, ENC_BIG_ENDIAN); + } + } +} + + +/* 6.16 Value Element */ +static gint +dissect_wccp2_value_element(tvbuff_t *tvb, int offset, gint length, int idx, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_tree *element_tree; + + if (length < 4) + return length - 16; + + element_tree = proto_tree_add_subtree_format(info_tree, tvb, offset, 16, ett_value_element, NULL, "Value Element(%u) %s", + idx,decode_wccp_encoded_address(tvb, offset+4+4+2+2, pinfo, info_tree, addr_table)); + + + wccp_add_ipaddress_item(info_tree, hf_value_element_src_ip_index, hf_value_element_src_ipv4, hf_value_element_src_ipv6, tvb, offset, 4, addr_table); + EAT_AND_CHECK(4,4); + wccp_add_ipaddress_item(info_tree, hf_value_element_dest_ip_index, hf_value_element_dest_ipv4, hf_value_element_dest_ipv6, tvb, offset, 4, addr_table); + + EAT_AND_CHECK(4,2); + proto_tree_add_item(element_tree, hf_value_element_src_port, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,2); + proto_tree_add_item(element_tree, hf_value_element_dest_port, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT_AND_CHECK(2,4); + + wccp_add_ipaddress_item(info_tree, hf_value_element_web_cache_ip_index, hf_value_element_web_cache_ipv4, hf_value_element_web_cache_ipv6, tvb, offset, 4, addr_table); + EAT(4); + + return length; +} + + +/* 6.14 Mask/Value Set Element */ +static gint +dissect_wccp2_mask_value_set_element(tvbuff_t *tvb, int offset, gint length, int idx, packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + proto_item *tl, *te; + proto_tree *element_tree, *value_tree; + guint num_of_val_elements; + guint i; + gint new_length; + + element_tree = proto_tree_add_subtree_format(info_tree, tvb, offset, 0, + ett_mv_set_element, &tl, "Mask/Value Set Element(%d)", idx); + + new_length = dissect_wccp2_mask_element(tvb,offset,length,pinfo,element_tree); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + if (length < 4) + return length-4; + + num_of_val_elements = tvb_get_ntohl(tvb, offset); + te = proto_tree_add_uint(element_tree, hf_mask_value_set_element_value_element_num, tvb, offset, 4, num_of_val_elements); + + value_tree = proto_item_add_subtree(te, ett_mv_set_value_list); + EAT(4); + + for (i = 0; i < num_of_val_elements; i++) + { + new_length=dissect_wccp2_value_element(tvb, offset, length, i, pinfo, value_tree, addr_table); + + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + } + + proto_item_set_len(tl, 16+num_of_val_elements*16); + + return length; +} + +#define ALT_ASSIGNMENT_INFO_MIN_LEN (4+4) + +/* 5.4.2 Alternate Assignment Component */ +static gint +dissect_wccp2_alternate_assignment_info(tvbuff_t *tvb, int offset, gint length, + packet_info *pinfo, proto_tree *info_tree, wccp_address_table* addr_table) +{ + guint16 assignment_type; + guint16 assignment_length; + proto_item *tf=NULL; + + guint32 n_routers; + guint i; + proto_tree *element_tree; + gint new_length; + + + if (length < ALT_ASSIGNMENT_INFO_MIN_LEN) + return length - ALT_ASSIGNMENT_INFO_MIN_LEN; + + + 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); + EAT_AND_CHECK(2,2); + + assignment_length = tvb_get_ntohs(tvb, offset); + tf=proto_tree_add_item(info_tree, hf_alt_assignment_info_assignment_length, tvb, offset, 2, ENC_BIG_ENDIAN); + EAT(2); + + if (length < assignment_length) + expert_add_info_format(pinfo, tf, &ei_wccp_assignment_length_bad, + "Assignment length is %d but only %d remain in the packet. Ignoring this for now", + assignment_length, length); + + if (length > assignment_length) { + expert_add_info_format(pinfo, tf, &ei_wccp_assignment_length_bad, + "Assignment length is %d but %d remain in the packet. Assuming that the assignment length is wrong and setting it to %d.", + assignment_length, length, length); + } + + new_length=dissect_wccp2_assignment_key_element(tvb, offset, length, pinfo, info_tree, addr_table); + CHECK_LENGTH_ADVANCE_OFFSET(new_length); + + n_routers = tvb_get_ntohl(tvb, offset); + proto_tree_add_uint(info_tree, hf_alt_assignment_info_num_routers, tvb, offset, 4, n_routers); + EAT(4); + + for (i = 0; i < n_routers; i++) { + if (length < 12) + return length - 12*(n_routers-i); + + element_tree = proto_tree_add_subtree_format(info_tree, tvb, offset, 12, + ett_router_alt_assignment_element, NULL, + "Router %d Assignment Element: IP address %s", i, + decode_wccp_encoded_address(tvb, offset, pinfo, info_tree, addr_table)); + + dissect_wccp2_router_assignment_element(tvb, offset, length , pinfo, element_tree, addr_table); + EAT(12); + } + + switch (assignment_type) { + case WCCP2_HASH_ASSIGNMENT_TYPE: + return dissect_wccp2_hash_assignment_info(tvb, offset, length, + pinfo, info_tree, addr_table); + case WCCP2_MASK_ASSIGNMENT_TYPE: + return dissect_wccp2_mask_value_set_list(tvb, offset, length, + pinfo, info_tree, addr_table); + case WCCP2r1_ALT_MASK_ASSIGNMENT_TYPE: + return dissect_wccp2_alternate_mask_value_set_list(tvb, offset, length, + pinfo, info_tree, addr_table); + default: + return length; + } +} + +static void +dissect_wccp2_info(tvbuff_t *tvb, int offset, + packet_info *pinfo, proto_tree *wccp_tree, + guint32 message_type) +{ + guint16 type; + guint16 item_length; + proto_item *tf; + proto_tree *info_tree; + gint ett; + gint (*dissector)(tvbuff_t *, int, int, packet_info *, proto_tree *, wccp_address_table*); + + /* check if all required fields are there */ + gboolean wccp2_security_info; + gboolean wccp2_service_info; + gboolean wccp2_router_id_info; + gboolean wccp2_wc_id_info; + gboolean wccp2_rtr_view_info; + gboolean wccp2_wc_view_info; + gboolean wccp2_redirect_assignment; + gboolean wccp2_query_info; + gboolean wccp2_capabilities_info; + gboolean wccp2_alt_assignment; + gboolean wccp2_assign_map; + gboolean wccp2_command_extension; + gboolean wccp2r1_alt_assignment_map; + wccp_address_table wccp_wccp_address_table = {FALSE, -1, -1, 0, NULL, NULL}; + + wccp2_security_info=FALSE; + wccp2_service_info=FALSE; + wccp2_router_id_info=FALSE; + wccp2_wc_id_info=FALSE; + wccp2_rtr_view_info=FALSE; + wccp2_wc_view_info=FALSE; + wccp2_redirect_assignment=FALSE; + wccp2_query_info=FALSE; + wccp2_capabilities_info=FALSE; + wccp2_alt_assignment=FALSE; + wccp2_assign_map=FALSE; + wccp2_command_extension=FALSE; + wccp2r1_alt_assignment_map=FALSE; + + /* ugly hack: we first need to check for the address table + component, otherwise we cannot print the IP's. + */ + find_wccp_address_table(tvb,offset,pinfo,wccp_tree, &wccp_wccp_address_table); + + while (tvb_reported_length_remaining(tvb, offset) > 0) { + type = tvb_get_ntohs(tvb, offset); + switch (type) { + + case WCCP2_SECURITY_INFO: + wccp2_security_info=TRUE; + ett = ett_security_info; + dissector = dissect_wccp2_security_info; + break; + + case WCCP2_SERVICE_INFO: + wccp2_service_info=TRUE; + ett = ett_service_info; + dissector = dissect_wccp2_service_info; + break; + + case WCCP2_ROUTER_ID_INFO: + wccp2_router_id_info=TRUE; + ett = ett_router_identity_info; + dissector = dissect_wccp2_router_identity_info; + break; + + case WCCP2_WC_ID_INFO: + wccp2_wc_id_info=TRUE; + ett = ett_wc_identity_info; + dissector = dissect_wccp2_wc_identity_info; + break; + + case WCCP2_RTR_VIEW_INFO: + wccp2_rtr_view_info=TRUE; + ett = ett_router_view_info; + dissector = dissect_wccp2_router_view_info; + break; + + case WCCP2_WC_VIEW_INFO: + wccp2_wc_view_info=TRUE; + ett = ett_wc_view_info; + dissector = dissect_wccp2_web_cache_view_info; + break; + + case WCCP2_REDIRECT_ASSIGNMENT: + wccp2_redirect_assignment=TRUE; + ett = ett_router_assignment_info; + dissector = dissect_wccp2_assignment_info; + break; + + case WCCP2_QUERY_INFO: + wccp2_query_info=TRUE; + ett = ett_query_info; + dissector = dissect_wccp2_router_query_info; + break; + + case WCCP2_CAPABILITIES_INFO: + wccp2_capabilities_info=TRUE; + ett = ett_capabilities_info; + dissector = dissect_wccp2_capability_info; + break; + + case WCCP2_ALT_ASSIGNMENT: + wccp2_alt_assignment=TRUE; + ett = ett_alt_assignment_info; + dissector = dissect_wccp2_alternate_assignment_info; + break; + + case WCCP2r1_ALT_ASSIGNMENT_MAP: + wccp2r1_alt_assignment_map=TRUE; + ett = ett_alt_assignment_map; + dissector = dissect_wccp2r1_alt_assignment_map_info; + break; + + case WCCP2r1_ADDRESS_TABLE: + ett = ett_address_table; + dissector = dissect_wccp2r1_address_table_info; + break; + + case WCCP2_ASSIGN_MAP: + wccp2_assign_map=TRUE; + ett = ett_assignment_map; + dissector = dissect_wccp2_assignment_map; + break; + case WCCP2_COMMAND_EXTENSION: + wccp2_command_extension=TRUE; + ett = ett_command_extension; + dissector = dissect_wccp2_command_extension; + break; + + default: + ett = ett_unknown_info; + dissector = NULL; + break; + } + + info_tree = proto_tree_add_subtree(wccp_tree, tvb, offset, -1, ett, &tf, + val_to_str(type, info_type_vals, "Unknown info type (%u)")); + + proto_tree_add_item(info_tree, hf_item_type, tvb, offset, 2, ENC_BIG_ENDIAN); + + item_length = tvb_get_ntohs(tvb, offset+2); + proto_tree_add_item(info_tree, hf_item_length, tvb, offset+2, 2, ENC_BIG_ENDIAN); + + offset += 4; + + if (dissector != NULL) { + gint remaining_item_length = (*dissector)(tvb, offset, item_length, pinfo, info_tree, &wccp_wccp_address_table); + + /* warn if we left bytes */ + if (remaining_item_length > 0) + expert_add_info_format(pinfo, tf, &ei_wccp_length_bad, + "The item is %d bytes too long", + remaining_item_length); + + /* error if we needed more bytes */ + if (remaining_item_length < 0) + expert_add_info_format(pinfo, tf, &ei_wccp_length_bad, + "The item is %d bytes too short", + -remaining_item_length); + + /* we assume that the item length is correct and jump forward */ + } else { + proto_tree_add_item(info_tree, hf_item_data, tvb, offset, item_length, ENC_NA); + } + + offset += item_length; + proto_item_set_end(tf, tvb, offset); + } + + + /* we're done. Check if we got all the required components */ + + switch (message_type) { + case WCCP2_HERE_I_AM: + if (!wccp2_security_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_security_info); + if (!wccp2_service_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_service_info); + if (wccp2_router_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_router_id_info); + if (!wccp2_wc_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_wc_id_info); + if (wccp2_rtr_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_rtr_view_info); + if (!wccp2_wc_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_wc_view_info); + if (wccp2_redirect_assignment) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_redirect_assignment); + if (wccp2_query_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_query_info); + if (wccp2_alt_assignment) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_alt_assignment); + if (wccp2_assign_map) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_assign_map); + if (wccp2r1_alt_assignment_map) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_alt_assignment_map); + break; + case WCCP2_I_SEE_YOU: + if (!wccp2_security_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_security_info); + if (!wccp2_service_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_service_info); + if (!wccp2_router_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_router_id_info); + if (wccp2_wc_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_id_info); + if (!wccp2_rtr_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_rtr_view_info); + if (wccp2_wc_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_view_info); + if (wccp2_redirect_assignment) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_redirect_assignment); + if (wccp2_query_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_query_info); + if (wccp2r1_alt_assignment_map) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_alt_assignment_map); + break; + + case WCCP2_REMOVAL_QUERY: + if (!wccp2_security_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_security_info); + if (!wccp2_service_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_service_info); + if (wccp2_router_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_router_id_info); + if (wccp2_wc_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_id_info); + if (wccp2_rtr_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_rtr_view_info); + if (wccp2_wc_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_view_info); + if (wccp2_redirect_assignment) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_redirect_assignment); + if (!wccp2_query_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_query_info); + if (wccp2_capabilities_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_capabilities_info); + if (wccp2_alt_assignment) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_alt_assignment); + if (wccp2_assign_map) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_assign_map); + if (wccp2_command_extension) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_command_extension); + if (wccp2r1_alt_assignment_map) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_alt_assignment_map); + break; + + case WCCP2_REDIRECT_ASSIGN: + if (!wccp2_security_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_security_info); + if (!wccp2_service_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_service_info); + if (wccp2_router_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_router_id_info); + if (wccp2_wc_id_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_id_info); + if (wccp2_rtr_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_rtr_view_info); + if (wccp2_wc_view_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_wc_view_info); + if (wccp2_query_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_query_info); + if (wccp2_capabilities_info) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_capabilities_info); + if (! (wccp2_assign_map || wccp2r1_alt_assignment_map || wccp2_alt_assignment || wccp2_redirect_assignment)) + expert_add_info(pinfo, wccp_tree, &ei_wccp_missing_assignment); + if (wccp2_command_extension) + expert_add_info(pinfo, wccp_tree, &ei_wccp_contains_command_extension); + break; + } +} + +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; + gint wccp2_length; + proto_item *length_item; + guint32 cache_count; + guint32 ipaddr; + guint i; + guint8 bucket; + + wccp_message_type = tvb_get_ntohl(tvb, offset); + + /* Check if this is really a WCCP message */ + if (try_val_to_str(wccp_message_type, wccp_type_vals) == NULL) + return 0; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "WCCP"); + + col_add_str(pinfo->cinfo, COL_INFO, val_to_str(wccp_message_type, + wccp_type_vals, "Unknown WCCP message (%u)")); + + 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; + offset = dissect_hash_data(tvb, offset, wccp_tree); + 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_wc_num, tvb, offset, 4, cache_count); + offset += 4; + for (i = 0; i < cache_count; i++) { + offset = dissect_web_cache_list_entry(tvb, offset, i, + wccp_tree); + } + 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_wc_num, 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, + tvb_ip_to_str(pinfo->pool, tvb, offset)); + offset += 4; + } + + for (i = 0; i < 256; i++) { + bucket = tvb_get_guint8(tvb, offset); + if (bucket == 0xff) { + proto_tree_add_uint_format(wccp_tree, hf_bucket, tvb, offset, 1, + bucket, "Bucket %d: Unassigned", i); + } else { + proto_tree_add_uint_format(wccp_tree, hf_bucket, tvb, offset, 1, + bucket, "Bucket %d: %d", i, bucket); + } + offset++; + } + 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 */ + /* 5.5 WCCP Message Header */ + + proto_tree_add_item(wccp_tree, hf_message_header_version, tvb, offset, 2, + ENC_BIG_ENDIAN); + offset += 2; + + length = tvb_get_ntohs(tvb, offset); + length_item = proto_tree_add_uint(wccp_tree, hf_message_header_length, tvb, offset, 2, length); + offset += 2; + + /* Is the length plus the length of the data preceding it longer than + the length of our packet? */ + wccp2_length = tvb_reported_length_remaining(tvb, offset); + if (length > (guint)wccp2_length) { + expert_add_info_format(pinfo, length_item, &ei_wccp_length_bad, + "The length as specified by the length field is bigger than the length of the packet"); + length = wccp2_length - offset; + } else { + /* Truncate the packet to the specified length. */ + tvb_set_reported_length(tvb, offset + length); + } + proto_item_set_len(wccp_tree_item, offset + length); + dissect_wccp2_info(tvb, offset, pinfo, wccp_tree, wccp_message_type); + break; + } + + return tvb_captured_length(tvb); +} + + + +/* End of utility functions */ + +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_bucket, + { "Bucket", "wccp.bucket", FT_UINT8, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_bucket_bit, + { "Bucket", "wccp.bucket_bit", FT_UINT8, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_message_header_version, + { "WCCP Version (>=2)", "wccp.message_header_version", FT_UINT16, BASE_HEX, NULL, 0x0, + "The WCCP version for version 2 and above", 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), 0x00010000, + 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_cache_ip, + { "Web Cache IP address", "wccp.cache_ip", FT_IPv4, BASE_NONE, NULL, 0x0, + "The IP address of a Web cache", HFILL } + }, + { &hf_wc_num, + { "Number of Web Caches", "wccp.wc_num", FT_UINT32, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_message_header_length, + { "Length", "wccp.message_header_length", FT_UINT16, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_item_length, + { "Length", "wccp.item_length", FT_UINT16, BASE_DEC, 0x0, 0x0, + "The Length of the WCCPv2 item", HFILL } + }, + { &hf_item_type, + { "Type", "wccp.item_type", FT_UINT16, BASE_DEC, VALS(info_type_vals), 0x0, + "The type of the WCCPv2 item", HFILL } + }, + { &hf_item_data, + { "Data", "wccp.item_data", FT_BYTES, BASE_NONE, 0x0, 0x0, + "The data for an unknown item type", HFILL } + }, + { &hf_security_info_option, + { "Security Option", "wccp.security_info_option", FT_UINT32, BASE_DEC, VALS(security_option_vals), 0x0, + NULL, HFILL } + }, + { &hf_security_info_md5_checksum, + { "MD5 checksum (not checked)", "wccp.security_md5_checksum", FT_BYTES, BASE_NONE, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_command_element_type, + {"Command Extension Type", "wccp.command_element_type", FT_UINT16, BASE_DEC, VALS(wccp_command_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_command_element_length, + {"Command Extension Length", "wccp.command_element_length", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_command_length, + {"Command Length", "wccp.command_length", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_command_element_shutdown_ip_index, + {"Command Element Shutdown IP", "wccp.command_element_shudown_ip_Address.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_command_element_shutdown_ipv4, + {"Command Element Shutdown IP", "wccp.command_element_shudown_ip_address.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_command_element_shutdown_ipv6, + {"Command Element Shutdown IP", "wccp.command_element_shudown_ip_address.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_command_unknown, + {"Unknown Command", "wccp.command_unknown", FT_NONE, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_service_info_type, + { "Service Type", "wccp.service_info_type", FT_UINT8, BASE_DEC, VALS(service_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_service_info_id_standard, + { "WCCP Service ID (Standard)", "wccp.service_info_std_id", FT_UINT8, BASE_DEC, VALS(service_id_vals) , 0x0, + "The WCCP Service id (Standard)", HFILL } + }, + { &hf_service_info_id_dynamic, + { "WCCP Service ID ( Dynamic)", "wccp.service_info_dyn_id", FT_UINT8, BASE_DEC, NULL , 0x0, + "The WCCP Service id (Dynamic)", HFILL } + }, + { &hf_service_info_priority, + { "Priority (highest is 255)", "wccp.service_info_priority", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_service_info_protocol, + { "Protocol", "wccp.service_info_protocol", FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0, + NULL, HFILL } + }, + { &hf_service_info_flags, + { "Flags", "wccp.service_info_flags", FT_UINT32, BASE_HEX, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_service_info_flags_src_ip_hash, + { "Source IP address in primary hash", "wccp.service_info_flag.src_ip_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_IP_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_dest_ip_hash, + { "Destination IP address in primary hash", "wccp.service_info_flag.dest_ip_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_IP_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_src_port_hash, + { "Source port in primary hash", "wccp.service_info_flag.src_port_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_PORT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_dest_port_hash, + { "Destination port in primary hash", "wccp.service_info_flag.dest_port_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_PORT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_ports_defined, + { "Ports", "wccp.service_info_flag.ports_defined", FT_BOOLEAN, 32, TFS(&tfs_defined_not_defined), WCCP2_SI_PORTS_DEFINED, + NULL, HFILL } + }, + { &hf_service_info_flags_ports_source, + { "Ports refer to", "wccp.service_info_flag.ports_source", FT_BOOLEAN, 32, TFS(&tfs_src_dest_port), WCCP2_SI_PORTS_SOURCE, + NULL, HFILL } + }, + { &hf_service_info_flags_redirect_only_protocol_0, + { "Redirect only protocol 0", "wccp.service_info_flag.redirect_only_protocol_0", FT_BOOLEAN, 32, TFS(&tfs_redirect_protocol0), WCCP2r1_SI_REDIRECT_ONLY_PROTOCOL_0, + NULL, HFILL } + }, + { &hf_service_info_flags_src_ip_alt_hash, + { "Source IP address in secondary hash", "wccp.service_info_flag.src_ip_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_IP_ALT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_dest_ip_alt_hash, + { "Destination IP address in secondary hash", "wccp.service_info_flag.dest_ip_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_IP_ALT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_src_port_alt_hash, + { "Source port in secondary hash", "wccp.service_info_flag.src_port_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_SRC_PORT_ALT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_dest_port_alt_hash, + { "Destination port in secondary hash", "wccp.service_info_flag.dest_port_alt_hash", FT_BOOLEAN, 32, TFS(&tfs_used_notused), WCCP2_SI_DST_PORT_ALT_HASH, + NULL, HFILL } + }, + { &hf_service_info_flags_reserved, + { "Reserved, should be 0", "wccp.service_info_flag.reserved", FT_UINT32, BASE_HEX, NULL, 0xFFFFF000, + NULL, HFILL } + }, + { &hf_service_info_source_port, + { "Source Port", "wccp.service_info_source_port", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_service_info_destination_port, + { "Destination Port", "wccp.service_info_destination_port", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_ip_index, + { "IP Address", "wccp.router_identity.ip_address.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_ipv4, + { "IP Address", "wccp.router_identity.ip_address.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_ipv6, + { "IP Address", "wccp.router_identity.ip_address.ipv6", FT_IPv6, 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_identity_send_to_ip_index, + { "Sent To IP Address", "wccp.router_identity.send_to_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_send_to_ipv4, + { "Sent To IP Address", "wccp.router_identity.send_to_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_send_to_ipv6, + { "Sent To IP Address", "wccp.router_identity.send_to_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_received_from_num, + { "Number of Received From IP addresses (Webcache to which the message is directed)", "wccp.router.num_recv_ip", FT_UINT32, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_identity_index, + { "Web-Cache IP Address", "wccp.web_cache_identity.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_identity_ipv4, + { "Web-Cache IP Address", "wccp.web_cache_identity.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_identity_ipv6, + { "Web-Cache IP Address", "wccp.web_cache_identity.ipv6", FT_IPv6, 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), 0x1, + NULL, HFILL } + }, + { &hf_web_cache_identity_flag_assign_type, + { "Assignment Type", "wccp.web_cache_identity.flags.assign_type", FT_UINT16, BASE_HEX, + VALS(wccp_web_cache_assignment_data_type_val), 0x6, + NULL, HFILL } + }, + { &hf_web_cache_identity_flag_version_request, + { "Version Request", "wccp.web_cache_identity.flags.version_request", FT_BOOLEAN, 16, + TFS(&tfs_version_min_max), 0x8, + NULL, HFILL } + }, + { &hf_web_cache_identity_flag_reserved, + { "Reserved, should be 0", "wccp.web_cache_identity.flags.reserved", FT_UINT16, BASE_HEX, + NULL, 0xFFF0, + NULL, HFILL } + }, + { &hf_mask_value_set_element_value_element_num, + { "Number of Value Elements", "wccp.mask_value_set_selement.value_element_num", FT_UINT32, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_assignment_weight, + { "Assignment Weight", "wccp.assignment_weight", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_status, + { "Status", "wccp.assignment_status", FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_key_ip_index, + { "Assignment Key IP Address", "wccp.assignment_key.ip_index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_key_ipv4, + { "Assignment Key IP Address", "wccp.assignment_key.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_key_ipv6, + { "Assignment Key IP Address", "wccp.assignment_key.ipv6", FT_IPv6, 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_assignment_no_data, + { "No Assignment Data Present", "wccp.assignment_no_data", FT_NONE, BASE_NONE, 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_identity_router_ip_index, + { "Router IP Address", "wccp.router_identity.router_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_router_ipv4, + { "Router IP Address", "wccp.router_identity.router_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_router_ipv6, + { "Router IP Address", "wccp.router_identity.router_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_received_from_ip_index, + { "Received From IP Address/Target Web Cache IP", "wccp.router_identity.received_from_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_received_from_ipv4, + { "Received From IP Address/Target Web Cache IP", "wccp.router_identity.received_from_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_identity_received_from_ipv6, + { "Received From IP Address/Target Web Cache IP", "wccp.router_identity.received_from_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_change_num, + { "Change Number", "wccp.wc_view_info.change_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_router_ip_index, + { "Router IP", "wccp.wc_view_info.router_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_router_ipv4, + { "Router IP", "wccp.wc_view_info.router_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_router_ipv6, + { "Router IP", "wccp.wc_view_info.router_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_wc_ip_index, + { "Web Cache IP", "wccp.wc_view_info.wc_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_wc_ipv4, + { "Web Cache IP", "wccp.wc_view_info.wc_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_info_wc_ipv6, + { "Web Cache IP", "wccp.wc_view_info.wc_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_router_num, + { "Number of Routers", "wccp.wc_view_info.router_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_wc_view_wc_num, + { "Number of Web Caches", "wccp.wc_view_info.wc_num", FT_UINT32, BASE_DEC, 0x0, 0x0, + NULL, HFILL } + }, + { &hf_wc_identity_ip_address_index, + { "Web Cache Identity", "wccp.wc_identity_ip_address.index", FT_UINT32, BASE_HEX, NULL, 0x0, + "The IP identifying the Web Cache", HFILL } + }, + { &hf_wc_identity_ip_address_ipv4, + { "Web Cache Identity", "wccp.wc_identity_ip_address.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + "The IP identifying the Web Cache", HFILL } + }, + { &hf_wc_identity_ip_address_ipv6, + { "Web Cache Identity", "wccp.wc_identity_ip_address.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + "The IP identifying the Web Cache", HFILL } + }, + { &hf_router_assignment_element_change_num, + { "Change Number", "wccp.router_assignment_element.change_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_info_router_num, + { "Number of Routers", "wccp.assignment_info.router_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_info_router_ip_index, + { "Router IP", "wccp.assignment_info.router_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_info_router_ipv4, + { "Router IP", "wccp.assignment_info.router_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_assignment_info_router_ipv6, + { "Router IP", "wccp.assignment_info.router_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_hash_buckets_assignment_wc_num, + { "Number of WC", "wccp.hash_buckets_assignment.wc_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_hash_buckets_assignment_wc_ip_index, + { "WC IP", "wccp.hash_buckets_assignment.wc_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_hash_buckets_assignment_wc_ipv4, + { "WC IP", "wccp.hash_buckets_assignment.wc_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_hash_buckets_assignment_wc_ipv6, + { "WC IP", "wccp.hash_buckets_assignment.wc_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_view_ip_index, + { "Router IP Address", "wccp.router_view.ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_view_ipv4, + { "Router IP Address", "wccp.router_view.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_view_ipv6, + { "Router IP Address", "wccp.router_view.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_ip_index, + { "Web-Cache Identity Element IP address", "wccp.router_query_info.ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_ipv4, + { "Web-Cache Identity Element IP address", "wccp.router_query_info.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_ipv6, + { "Web-Cache Identity Element IP address", "wccp.router_query_info.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_send_to_ip_index, + { "Sent To IP Address", "wccp.router_query_info.send_to_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_send_to_ipv4, + { "Sent To IP Address", "wccp.router_query_info.send_to_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_send_to_ipv6, + { "Sent To IP Address", "wccp.router_query_info.send_to_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_target_ip_index, + { "Target IP Address", "wccp.router_query_info.target_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_target_ipv4, + { "Target IP Address", "wccp.router_query_info.target_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_router_query_info_target_ipv6, + { "Target IP Address", "wccp.router_query_info.target_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_element_type, + { "Type", "wccp.capability_element.type", FT_UINT16, BASE_DEC, VALS(capability_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_capability_element_length, + { "Value Length", "wccp.capability_element.length", FT_UINT16, BASE_DEC, NULL, 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_capability_transmit_t, + { "Message interval in milliseconds", "wccp.capability.transmit_t", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_transmit_t_upper_limit, + { "Message interval upper limit in milliseconds", "wccp.capability.transmit_t.upper_limit", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_transmit_t_lower_limit, + { "Message interval lower limit in milliseconds", "wccp.capability.transmit_t.lower_limit", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_timeout_scale, + { "Timer scale", "wccp.capability.timer_scale.timeout_scale", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_timeout_scale_upper_limit, + { "Timer scale upper limit", "wccp.capability.timer_scale.timeout_scale.upper_limit", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_timeout_scale_lower_limit, + { "Timer scale lower limit", "wccp.capability.timer_scale.timeout_scale.lower_limit", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_ra_timer_scale, + { "RA Timer scale", "wccp.capability.timer_scale.ra_timer_scale", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_ra_scale_upper_limit, + { "RA Timer scale upper limit", "wccp.capability.timer_scale.ra_timer_scale.upper_limit", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_timer_scale_ra_scale_lower_limit, + { "RA Timer scale lower limit", "wccp.capability.timer_scale.ra_timer_scale.lower_limit", FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_capability_value, + { "Value", "wccp.capability.value", FT_BYTES, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_reserved_zero, + { "Reserved, must be 0", "wccp.reserved_zero", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_src_ip_index, + { "Source Address", "wccp.value_element.src_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_src_ipv4, + { "Source Address", "wccp.value_element.src_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_src_ipv6, + { "Source Address", "wccp.value_element.src_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_dest_ip_index, + { "Destination Address", "wccp.value_element.dest_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_dest_ipv4, + { "Destination Address", "wccp.value_element.dest_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_dest_ipv6, + { "Destination Address", "wccp.value_element.dest_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_src_port, + { "Source Port", "wccp.value_element.src_port", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_dest_port, + { "Destination Port", "wccp.value_element.dest_port", FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_web_cache_ip_index, + { "Web Cache Address", "wccp.value_element.web_cache_ip.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_web_cache_ipv4, + { "Web Cache Address", "wccp.value_element.web_cache_ip.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_value_element_web_cache_ipv6, + { "Web Cache Address", "wccp.value_element.web_cache_ip.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_mask_value_set_list_num_elements, + { "Number of elements", "wccp.mask_value_set_list.num_elements", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_mask_element_src_ip, + { "Source Address Mask", "wccp.mask_element.src_ip", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_mask_element_dest_ip, + { "Destination Address Mask", "wccp.mask_element.dest_ip", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_mask_element_src_port, + { "Source Port Mask", "wccp.mask_element.src_port", FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_mask_element_dest_port, + { "Destination Port Mask", "wccp.mask_element.dest_port", FT_UINT16, BASE_HEX, 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_extended_assignment_data_type, + { "Assignment type", "wccp.extended_assignment_data.type", FT_UINT16, BASE_DEC, VALS(assignment_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_alt_assignment_map_assignment_type, + { "Assignment type", "wccp.alt_assignment_map.assignment_type", FT_UINT16, BASE_DEC, VALS(assignment_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_alt_assignment_map_assignment_length, + { "Assignment length", "wccp.alt_assignment_map.assignment_length", FT_UINT16, BASE_DEC, NULL, 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_extended_assignment_data_length, + { "Assignment length", "wccp.extended_assignment_data.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_mask_value_set_element_num_wc_value_elements, + { "Number of Web-Cache Value Elements", "wccp.alt_assignment_mask_value_set_element.num_wc_value_elements", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_value_element_wc_address_index, + { "Web-Cache Address", "wccp.web_cache_value_element.wc_address.index", FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_value_element_wc_address_ipv4, + { "Web-Cache Address", "wccp.web_cache_value_element.wc_address.ipv4", FT_IPv4, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_value_element_wc_address_ipv6, + { "Web-Cache Address", "wccp.web_cache_value_element.wc_address.ipv6", FT_IPv6, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_value_element_num_values, + { "Number of Value Sequence Numbers", "wccp.web_cache_value_element.num_values", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_web_cache_value_seq_num, + { "Value Sequence Number", "wccp.web_cache_value_element.value_seq_num", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_alt_assignment_mask_value_set_list_num_elements, + { "Number of Alternate Mask/Value Set Elements", "wccp.alt_assignment_mask_value_list.num_elements", FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_address_table_family, + { "Family Type", "wccp.address_table.family_type", FT_UINT16, BASE_DEC, VALS(wccp_address_family_val), 0x0, + "The WCCP Address Table Family type", HFILL } + }, + { &hf_address_table_address_length, + { "Address Length", "wccp.address_table.address_length", FT_UINT16, BASE_DEC, NULL, 0x0, + "The WCCP Address Table Address Length", HFILL } + }, + { &hf_address_table_length, + { "Length", "wccp.address_table.length", FT_UINT32, BASE_DEC, NULL, 0x0, + "The WCCP Address Table Length", HFILL } + }, + { &hf_address_table_element, + { "Address", "wccp.address_table.element", FT_STRING, BASE_NONE, NULL, 0x0, + NULL, HFILL } + }, + + }; + static gint *ett[] = { + &ett_wccp, + &ett_buckets, + &ett_hash_assignment_buckets, + &ett_mask_assignment_data_element, + &ett_alternate_mask_assignment_data_element, + &ett_extended_assigment_data_element, + &ett_table_element, + &ett_hash_flags, + &ett_wc_identity_flags, + &ett_cache_info, + &ett_security_info, + &ett_service_info, + &ett_service_flags, + &ett_service_info_ports, + &ett_wc_view_info_router_element, + &ett_router_identity_info, + &ett_wc_identity_element, + &ett_wc_identity_info, + &ett_router_view_info, + &ett_wc_view_info, + &ett_router_assignment_element, + &ett_hash_buckets_assignment_wc_element, + &ett_hash_buckets_assignment_buckets, + &ett_router_alt_assignment_element, + &ett_router_assignment_info, + &ett_query_info, + &ett_capabilities_info, + &ett_capability_element, + &ett_capability_forwarding_method, + &ett_capability_assignment_method, + &ett_capability_return_method, + &ett_capability_transmit_t, + &ett_capability_timer_scale, + &ett_alt_assignment_info, + &ett_alt_assignment_map, + &ett_address_table, + &ett_assignment_map, + &ett_command_extension, + &ett_alternate_mask_value_set, + &ett_alternate_mask_value_set_element, + &ett_mv_set_list, + &ett_mv_set_element, + &ett_mv_set_value_list, + &ett_alternate_mv_set_element_list, + &ett_web_cache_value_element_list, + &ett_alternate_mv_set_element, + &ett_value_element, + &ett_unknown_info, + }; + + static ei_register_info ei[] = { + { &ei_wccp_missing_security_info, { "wccp.missing.security_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Security Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_service_info, { "wccp.missing.service_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Service Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_wc_id_info, { "wccp.missing.wc_id_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Web-Cache Identity Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_router_id_info, { "wccp.missing.router_id_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Router Identity Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_query_info, { "wccp.missing.query_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Query Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_wc_view_info, { "wccp.missing.wc_view_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Web-Cache View Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_rtr_view_info, { "wccp.missing.rtr_view_info", PI_PROTOCOL, PI_ERROR, "This message should contain a Router View Info component, but it is missing", EXPFILL }}, + { &ei_wccp_missing_assignment, { "wccp.missing.assignment", PI_PROTOCOL, PI_ERROR, "This message should contain a Alternate Assignment, Assignment Map, Assignment Info or " + "Alternative Assignment Map component, but it is missing", EXPFILL }}, + { &ei_wccp_contains_redirect_assignment, { "wccp.contains.redirect_assignment", PI_PROTOCOL, PI_ERROR, "This message contains a Assignment Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_router_id_info, { "wccp.contains.router_id_info", PI_PROTOCOL, PI_ERROR, "This message contains a Router Identity Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_rtr_view_info, { "wccp.contains.rtr_view_info", PI_PROTOCOL, PI_ERROR, "This message contains a Router View Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_query_info, { "wccp.contains.query_info", PI_PROTOCOL, PI_ERROR, "This message contains a Query Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_alt_assignment, { "wccp.contains.alt_assignment", PI_PROTOCOL, PI_ERROR, "This message contains a Alternate Assignment component, but it should not", EXPFILL }}, + { &ei_wccp_contains_assign_map, { "wccp.contains.assign_map", PI_PROTOCOL, PI_ERROR, "This message contains a Assignment Map component, but it should not", EXPFILL }}, + { &ei_wccp_contains_alt_assignment_map, { "wccp.contains.alt_assignment_map", PI_PROTOCOL, PI_ERROR, "This message contains a Alternative Assignment Map component, but it should not", EXPFILL }}, + { &ei_wccp_contains_wc_id_info, { "wccp.contains.wc_id_info", PI_PROTOCOL, PI_ERROR, "This message contains a Web-Cache Identity Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_wc_view_info, { "wccp.contains.wc_view_info", PI_PROTOCOL, PI_ERROR, "This message contains a Web-Cache View Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_capabilities_info, { "wccp.contains.capabilities_info", PI_PROTOCOL, PI_ERROR, "This message contains a Capabilities Info component, but it should not", EXPFILL }}, + { &ei_wccp_contains_command_extension, { "wccp.contains.command_extension", PI_PROTOCOL, PI_ERROR, "This message contains a Command Extension component, but it should not", EXPFILL }}, + { &ei_wccp_assignment_length_bad, { "wccp.assignment_length_bad", PI_PROTOCOL, PI_ERROR, "Assignment length bad", EXPFILL }}, + { &ei_wccp_length_bad, { "wccp.length_bad", PI_PROTOCOL, PI_ERROR, "Length bad", EXPFILL }}, + { &ei_wccp_service_info_priority_nonzero, { "wccp.service_info_priority.nonzero", PI_PROTOCOL, PI_WARN, "The priority must be zero for well-known services.", EXPFILL }}, + { &ei_wccp_service_info_protocol_nonzero, { "wccp.service_info_protocol.nonzero", PI_PROTOCOL, PI_WARN, "The protocol must be zero for well-known services.", EXPFILL }}, + { &ei_wccp_router_identity_receive_id_zero, { "wccp.router_identity.receive_id.zero", PI_PROTOCOL, PI_WARN, "Receive ID shouldn't be 0", EXPFILL }}, + { &ei_wccp_web_cache_identity_hash_rev_zero, { "wccp.web_cache_identity.hash_rev.zero", PI_PROTOCOL, PI_WARN, "Should be 0 (6.4)", EXPFILL }}, + { &ei_wccp_address_table_family_unknown, { "wccp.address_table.family_type.unknown", PI_PROTOCOL, PI_ERROR, "Unknown address family", EXPFILL }}, + { &ei_wccp_capability_element_length, { "wccp.capability_element.length.invalid", PI_PROTOCOL, PI_WARN, "Value Length invalid", EXPFILL }}, + { &ei_wccp_port_fields_not_used, { "wccp.port_fields_not_used", PI_PROTOCOL, PI_NOTE, "Ports fields not used", EXPFILL }}, + { &ei_wccp_a_zero_not_c, { "wccp.a_zero_not_c", PI_PROTOCOL, PI_WARN, "Error A is 0, but C is not", EXPFILL }}, +#if 0 + { &ei_wccp_c_zero_not_a, { "wccp.c_zero_not_a", PI_PROTOCOL, PI_WARN, "Error C is 0, but A is not", EXPFILL }}, +#endif + }; + + expert_module_t* expert_wccp; + + 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)); + expert_wccp = expert_register_protocol(proto_wccp); + expert_register_field_array(expert_wccp, ei, array_length(ei)); + wccp_handle = register_dissector("wccp", dissect_wccp, proto_wccp); +} + +void +proto_reg_handoff_wccp(void) +{ + dissector_add_uint_with_preference("udp.port", UDP_PORT_WCCP, wccp_handle); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 2 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=2 tabstop=8 expandtab: + * :indentSize=2:tabSize=8:noTabs=true: + */ |