diff options
Diffstat (limited to 'epan/dissectors/packet-enrp.c')
| -rw-r--r-- | epan/dissectors/packet-enrp.c | 904 |
1 files changed, 904 insertions, 0 deletions
diff --git a/epan/dissectors/packet-enrp.c b/epan/dissectors/packet-enrp.c new file mode 100644 index 0000000000..1aa87c442b --- /dev/null +++ b/epan/dissectors/packet-enrp.c @@ -0,0 +1,904 @@ +/* packet-enrp.c + * Routines for Endpoint Name Resolution Protocol (ENRP) + * It is hopefully (needs testing) compilant to + * http://www.ietf.org/internet-drafts/draft-ietf-rserpool-common-param-06.txt + * http://www.ietf.org/internet-drafts/draft-ietf-rserpool-enrp-09.txt + * + * The code is not as simple as possible for the current protocol + * but allows to be easily adopted to future versions of the protocol. + * I will reconsider this after the protocol is an RFC. + * + * TODO: + * - check message lengths + * + * Copyright 2004, Michael Tuexen <tuexen [AT] fh-muenster.de> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from README.developer + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <epan/packet.h> +#include "sctpppids.h" + +/* Initialize the protocol and registered fields */ +static int proto_enrp = -1; +static int hf_cause_code = -1; +static int hf_cause_length = -1; +static int hf_cause_info = -1; +static int hf_cause_padding = -1; +static int hf_message_type = -1; +static int hf_message_flags = -1; +static int hf_message_length = -1; +static int hf_message_value = -1; +static int hf_parameter_type = -1; +static int hf_parameter_length = -1; +static int hf_parameter_value = -1; +static int hf_parameter_padding = -1; +static int hf_parameter_ipv4_address = -1; +static int hf_parameter_ipv6_address = -1; +static int hf_sctp_port = -1; +static int hf_transport_use = -1; +static int hf_tcp_port = -1; +static int hf_udp_port = -1; +static int hf_udp_reserved = -1; +static int hf_policy_type = -1; +static int hf_policy_value = -1; +static int hf_pool_handle = -1; +static int hf_pe_pe_identifier = -1; +static int hf_home_enrp_id = -1; +static int hf_reg_life = -1; +static int hf_server_identifier = -1; +static int hf_m_bit = -1; +static int hf_reserved = -1; +static int hf_cookie = -1; +static int hf_pe_identifier = -1; +static int hf_pe_checksum = -1; +static int hf_sender_servers_id = -1; +static int hf_receiver_servers_id = -1; +static int hf_target_servers_id = -1; +static int hf_update_action = -1; +static int hf_pmu_reserved = -1; +static int hf_reply_required_bit = -1; +static int hf_own_children_only_bit = -1; +static int hf_more_to_send_bit = -1; +static int hf_reject_bit = -1; + +/* Initialize the subtree pointers */ +static gint ett_enrp = -1; +static gint ett_enrp_parameter = -1; +static gint ett_enrp_cause = -1; +static gint ett_enrp_flags = -1; + +static void +dissect_parameters(tvbuff_t *, proto_tree *); + +#define NETWORK_BYTE_ORDER FALSE +#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2) + +/* Dissectors for error causes. This is common for ASAP and ENRP. */ + +#define CAUSE_CODE_LENGTH 2 +#define CAUSE_LENGTH_LENGTH 2 +#define CAUSE_HEADER_LENGTH (CAUSE_CODE_LENGTH + CAUSE_LENGTH_LENGTH) + +#define CAUSE_HEADER_OFFSET 0 +#define CAUSE_CODE_OFFSET CAUSE_HEADER_OFFSET +#define CAUSE_LENGTH_OFFSET (CAUSE_CODE_OFFSET + CAUSE_CODE_LENGTH) +#define CAUSE_INFO_OFFSET (CAUSE_LENGTH_OFFSET + CAUSE_LENGTH_LENGTH) + +static void +dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item) +{ + guint16 code, length, cause_info_length; + + code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET); + length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET); + cause_info_length = length - CAUSE_HEADER_LENGTH; + if (cause_info_length > 0) + proto_tree_add_bytes(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, + tvb_get_ptr(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length)); + proto_item_append_text(cause_item, " (code %u and %u byte%s information)", code, cause_info_length, plurality(cause_info_length, "", "s")); +} + +#define UNRECOGNIZED_PARAMETER_CAUSE_CODE 1 +#define UNRECONGNIZED_MESSAGE_CAUSE_CODE 2 +#define INVALID_VALUES 3 +#define NON_UNIQUE_PE_IDENTIFIER 4 +#define POOLING_POLICY_INCONSISTENT_CAUSE_CODE 5 +#define LACK_OF_RESOURCES_CAUSE_CODE 6 +#define INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE 7 +#define INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE 8 + +static const value_string cause_code_values[] = { + { UNRECOGNIZED_PARAMETER_CAUSE_CODE, "Unrecognized parameter" }, + { UNRECONGNIZED_MESSAGE_CAUSE_CODE, "Unrecognized message" }, + { INVALID_VALUES, "Invalid values" }, + { NON_UNIQUE_PE_IDENTIFIER, "Non-unique PE identifier" }, + { POOLING_POLICY_INCONSISTENT_CAUSE_CODE, "Pooling policy inconsistent" }, + { LACK_OF_RESOURCES_CAUSE_CODE, "Lack of resources" }, + { INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE, "Inconsistent transport type" }, + { INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE, "Inconsistent data/control type" }, + { 0, NULL } }; + +static void +dissect_error_cause(tvbuff_t *cause_tvb, proto_tree *parameter_tree) +{ + guint16 code, length, padding_length; + proto_item *cause_item; + proto_tree *cause_tree; + + code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET); + length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET); + padding_length = tvb_length(cause_tvb) - length; + + cause_item = proto_tree_add_text(parameter_tree, cause_tvb, CAUSE_HEADER_OFFSET, tvb_length(cause_tvb), val_to_str(code, cause_code_values, "Unknown error cause")); + cause_tree = proto_item_add_subtree(cause_item, ett_enrp_cause); + + proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, NETWORK_BYTE_ORDER); + + switch(code) { + default: + dissect_unknown_cause(cause_tvb, cause_tree, cause_item); + break; + } + if (padding_length > 0) + proto_tree_add_item(cause_tree, hf_cause_padding, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER); +} + +static void +dissect_error_causes(tvbuff_t *error_causes_tvb, proto_tree *parameter_tree) +{ + guint16 length, total_length; + gint offset; + tvbuff_t *error_cause_tvb; + + offset = 0; + while(tvb_reported_length_remaining(error_causes_tvb, offset)) { + length = tvb_get_ntohs(error_causes_tvb, offset + CAUSE_LENGTH_OFFSET); + total_length = ADD_PADDING(length); + error_cause_tvb = tvb_new_subset(error_causes_tvb, offset , total_length, total_length); + dissect_error_cause(error_cause_tvb, parameter_tree); + offset += total_length; + } +} + +/* Dissectors for parameters. This is common for ASAP and ENRP. */ + +#define PARAMETER_TYPE_LENGTH 2 +#define PARAMETER_LENGTH_LENGTH 2 +#define PARAMETER_HEADER_LENGTH (PARAMETER_TYPE_LENGTH + PARAMETER_LENGTH_LENGTH) + +#define PARAMETER_HEADER_OFFSET 0 +#define PARAMETER_TYPE_OFFSET PARAMETER_HEADER_OFFSET +#define PARAMETER_LENGTH_OFFSET (PARAMETER_TYPE_OFFSET + PARAMETER_TYPE_LENGTH) +#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH) + +#define IPV4_ADDRESS_LENGTH 4 +#define IPV4_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_parameter_ipv4_address, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", ip_to_str((const guint8 *)tvb_get_ptr(parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH))); +} + +#define IPV6_ADDRESS_LENGTH 16 +#define IPV6_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_parameter_ipv6_address, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%s)", ip6_to_str((const struct e_in6_addr *)tvb_get_ptr(parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH))); +} + +#define TRANSPORT_USE_DATA_ONLY 0 +#define TRANSPORT_USE_DATA_PLUS_CONTROL 1 + +static const value_string transport_use_values[] = { + { TRANSPORT_USE_DATA_ONLY, "Data only" }, + { TRANSPORT_USE_DATA_PLUS_CONTROL, "Data plus control" }, + { 0, NULL } }; + +#define SCTP_PORT_LENGTH 2 +#define SCTP_TRANSPORT_USE_LENGTH 2 +#define SCTP_PORT_OFFSET PARAMETER_VALUE_OFFSET +#define SCTP_TRANSPORT_USE_OFFSET (SCTP_PORT_OFFSET + SCTP_PORT_LENGTH) +#define SCTP_ADDRESS_OFFSET (SCTP_TRANSPORT_USE_OFFSET + SCTP_TRANSPORT_USE_LENGTH) + +static void +dissect_sctp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_sctp_port, parameter_tvb, SCTP_PORT_OFFSET, SCTP_PORT_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, SCTP_TRANSPORT_USE_OFFSET, SCTP_TRANSPORT_USE_LENGTH, NETWORK_BYTE_ORDER); + + parameters_tvb = tvb_new_subset(parameter_tvb, SCTP_ADDRESS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree); +} + +#define TCP_PORT_LENGTH 2 +#define TCP_TRANSPORT_USE_LENGTH 2 +#define TCP_PORT_OFFSET PARAMETER_VALUE_OFFSET +#define TCP_TRANSPORT_USE_OFFSET (TCP_PORT_OFFSET + TCP_PORT_LENGTH) +#define TCP_ADDRESS_OFFSET (TCP_TRANSPORT_USE_OFFSET + TCP_TRANSPORT_USE_LENGTH) + +static void +dissect_tcp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_tcp_port, parameter_tvb, TCP_PORT_OFFSET, TCP_PORT_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, TCP_TRANSPORT_USE_OFFSET, TCP_TRANSPORT_USE_LENGTH, NETWORK_BYTE_ORDER); + + parameters_tvb = tvb_new_subset(parameter_tvb, TCP_ADDRESS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree); +} + +#define UDP_PORT_LENGTH 2 +#define UDP_RESERVED_LENGTH 2 +#define UDP_PORT_OFFSET PARAMETER_VALUE_OFFSET +#define UDP_RESERVED_OFFSET (UDP_PORT_OFFSET + UDP_PORT_LENGTH) +#define UDP_ADDRESS_OFFSET (UDP_RESERVED_OFFSET + UDP_RESERVED_LENGTH) + +static void +dissect_udp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_udp_port, parameter_tvb, UDP_PORT_OFFSET, UDP_PORT_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_udp_reserved, parameter_tvb, UDP_RESERVED_OFFSET, UDP_RESERVED_LENGTH, NETWORK_BYTE_ORDER); + + parameters_tvb = tvb_new_subset(parameter_tvb, UDP_ADDRESS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree); +} + +#define POLICY_TYPE_LENGTH 1 +#define POLICY_VALUE_LENGTH 3 + +#define POLICY_TYPE_OFFSET PARAMETER_VALUE_OFFSET +#define POLICY_VALUE_OFFSET (POLICY_TYPE_OFFSET + POLICY_TYPE_LENGTH) + +#define ROUND_ROBIN_POLICY 1 +#define LEAST_USED_POLICY 2 +#define LEAST_USED_WITH_DEG 3 +#define WEIGHTED_ROUND_ROBIN 4 + +static const value_string policy_type_values[] = { + { ROUND_ROBIN_POLICY, "Round robin" }, + { LEAST_USED_POLICY, "Least used" }, + { LEAST_USED_WITH_DEG, "Least used with degradation" }, + { WEIGHTED_ROUND_ROBIN, "Weighted round robin" }, + { 0, NULL } }; + +static void +dissect_pool_member_selection_policy_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + proto_tree_add_item(parameter_tree, hf_policy_type, parameter_tvb, POLICY_TYPE_OFFSET, POLICY_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_policy_value, parameter_tvb, POLICY_VALUE_OFFSET, POLICY_VALUE_LENGTH, NETWORK_BYTE_ORDER); +} + +#define POOL_HANDLE_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_pool_handle_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + guint16 handle_length; + + handle_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + proto_tree_add_item(parameter_tree, hf_pool_handle, parameter_tvb, POOL_HANDLE_OFFSET, handle_length, NETWORK_BYTE_ORDER); +} + +#define PE_PE_IDENTIFIER_LENGTH 4 +#define HOME_ENRP_INDENTIFIER_LENGTH 4 +#define REGISTRATION_LIFE_LENGTH 4 + +#define PE_PE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET +#define HOME_ENRP_INDENTIFIER_OFFSET (PE_PE_IDENTIFIER_OFFSET + PE_PE_IDENTIFIER_LENGTH) +#define REGISTRATION_LIFE_OFFSET (HOME_ENRP_INDENTIFIER_OFFSET + HOME_ENRP_INDENTIFIER_LENGTH) +#define USER_TRANSPORT_PARAMETER_OFFSET (REGISTRATION_LIFE_OFFSET + REGISTRATION_LIFE_LENGTH) + +static void +dissect_pool_element_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_pe_pe_identifier, parameter_tvb, PE_PE_IDENTIFIER_OFFSET, PE_PE_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_home_enrp_id, parameter_tvb, HOME_ENRP_INDENTIFIER_OFFSET, HOME_ENRP_INDENTIFIER_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_reg_life, parameter_tvb, REGISTRATION_LIFE_OFFSET, REGISTRATION_LIFE_LENGTH, NETWORK_BYTE_ORDER); + + parameters_tvb = tvb_new_subset(parameter_tvb, USER_TRANSPORT_PARAMETER_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree); +} + +#define SERVER_ID_LENGTH 4 +#define RESERVED_LENGTH 4 + +#define SERVER_ID_OFFSET PARAMETER_VALUE_OFFSET +#define RESERVED_OFFSET (SERVER_ID_OFFSET + SERVER_ID_LENGTH) +#define SERVER_TRANSPORT_OFFSET (RESERVED_OFFSET + RESERVED_LENGTH) + +#define M_BIT_MASK 0x80000000 +#define RESERVED_MASK 0x7fffffff + +static void +dissect_server_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_server_identifier, parameter_tvb, SERVER_ID_OFFSET, SERVER_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_m_bit, parameter_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_reserved, parameter_tvb, RESERVED_OFFSET, RESERVED_LENGTH, NETWORK_BYTE_ORDER); + + parameters_tvb = tvb_new_subset(parameter_tvb, SERVER_TRANSPORT_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, parameter_tree); +} + +#define ERROR_CAUSES_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_operation_error_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *error_causes_tvb; + + error_causes_tvb = tvb_new_subset(parameter_tvb, ERROR_CAUSES_OFFSET, -1,-1); + dissect_error_causes(error_causes_tvb, parameter_tree); +} + +#define COOKIE_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_cookie_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 cookie_length; + + cookie_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + if (cookie_length > 0) + proto_tree_add_item(parameter_tree, hf_cookie, parameter_tvb, COOKIE_OFFSET, cookie_length, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (%u byte%s)", cookie_length, plurality(cookie_length, "", "s")); +} + +#define PE_IDENTIFIER_LENGTH 4 +#define PE_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_pe_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_pe_identifier, parameter_tvb, PE_IDENTIFIER_OFFSET, PE_IDENTIFIER_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohl(parameter_tvb, PE_IDENTIFIER_OFFSET)); +} + +#define PE_CHECKSUM_LENGTH 4 +#define PE_CHECKSUM_OFFSET PARAMETER_VALUE_OFFSET + +static void +dissect_pe_checksum_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + proto_tree_add_item(parameter_tree, hf_pe_checksum, parameter_tvb, PE_CHECKSUM_OFFSET, PE_CHECKSUM_LENGTH, NETWORK_BYTE_ORDER); + proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohl(parameter_tvb, PE_CHECKSUM_OFFSET)); +} + +static void +dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item) +{ + guint16 type, parameter_value_length; + + type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET); + parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH; + + if (parameter_value_length > 0) + proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, NETWORK_BYTE_ORDER); + + proto_item_append_text(parameter_item, " (type %u and %u byte%s value)", type, parameter_value_length, plurality(parameter_value_length, "", "s")); +} + +#define IPV4_ADDRESS_PARAMETER_TYPE 0x01 +#define IPV6_ADDRESS_PARAMETER_TYPE 0x02 +#define SCTP_TRANSPORT_PARAMETER_TYPE 0x03 +#define TCP_TRANSPORT_PARAMETER_TYPE 0x04 +#define UDP_TRANSPORT_PARAMETER_TYPE 0x05 +#define POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE 0x06 +#define POOL_HANDLE_PARAMETER_TYPE 0x07 +#define POOL_ELEMENT_PARAMETER_TYPE 0x08 +#define SERVER_INFORMATION_PARAMETER_TYPE 0x09 +#define OPERATION_ERROR_PARAMETER_TYPE 0x0a +#define COOKIE_PARAMETER_TYPE 0x0b +#define PE_IDENTIFIER_PARAMETER_TYPE 0x0c +#define PE_CHECKSUM_PARAMETER_TYPE 0x0d + +static const value_string parameter_type_values[] = { + { IPV4_ADDRESS_PARAMETER_TYPE, "IPV4 address" }, + { IPV6_ADDRESS_PARAMETER_TYPE, "IPV6 address" }, + { SCTP_TRANSPORT_PARAMETER_TYPE, "SCTP transport address" }, + { TCP_TRANSPORT_PARAMETER_TYPE, "TCP transport address" }, + { UDP_TRANSPORT_PARAMETER_TYPE, "UDP transport address" }, + { POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE, "Pool member selection policy" }, + { POOL_HANDLE_PARAMETER_TYPE, "Pool handle" }, + { POOL_ELEMENT_PARAMETER_TYPE, "Pool element" }, + { SERVER_INFORMATION_PARAMETER_TYPE, "Server Information" }, + { OPERATION_ERROR_PARAMETER_TYPE, "Operation error" }, + { COOKIE_PARAMETER_TYPE, "Cookie" }, + { PE_IDENTIFIER_PARAMETER_TYPE, "Pool Element identifier" }, + { PE_CHECKSUM_PARAMETER_TYPE, "PE checksum" }, + { 0, NULL } }; + + +static void +dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *enrp_tree) +{ + guint16 type, length, padding_length; + proto_item *parameter_item; + proto_tree *parameter_tree; + + /* extract tag and length from the parameter */ + type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET); + length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET); + padding_length = tvb_length(parameter_tvb) - length; + + /* create proto_tree stuff */ + parameter_item = proto_tree_add_text(enrp_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, tvb_length(parameter_tvb), val_to_str(type, parameter_type_values, "Unknown parameter")); + parameter_tree = proto_item_add_subtree(parameter_item, ett_enrp_parameter); + + /* add tag and length to the enrp tree */ + proto_tree_add_item(parameter_tree, hf_parameter_type, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, NETWORK_BYTE_ORDER); + + switch(type) { + case IPV4_ADDRESS_PARAMETER_TYPE: + dissect_ipv4_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + case IPV6_ADDRESS_PARAMETER_TYPE: + dissect_ipv6_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + case SCTP_TRANSPORT_PARAMETER_TYPE: + dissect_sctp_transport_parameter(parameter_tvb, parameter_tree); + break; + case TCP_TRANSPORT_PARAMETER_TYPE: + dissect_tcp_transport_parameter(parameter_tvb, parameter_tree); + break; + case UDP_TRANSPORT_PARAMETER_TYPE: + dissect_udp_transport_parameter(parameter_tvb, parameter_tree); + break; + case POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE: + dissect_pool_member_selection_policy_parameter(parameter_tvb, parameter_tree); + break; + case POOL_HANDLE_PARAMETER_TYPE: + dissect_pool_handle_parameter(parameter_tvb, parameter_tree); + break; + case POOL_ELEMENT_PARAMETER_TYPE: + dissect_pool_element_parameter(parameter_tvb, parameter_tree); + break; + case SERVER_INFORMATION_PARAMETER_TYPE: + dissect_server_information_parameter(parameter_tvb, parameter_tree); + break; + case OPERATION_ERROR_PARAMETER_TYPE: + dissect_operation_error_parameter(parameter_tvb, parameter_tree); + break; + case COOKIE_PARAMETER_TYPE: + dissect_cookie_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + case PE_IDENTIFIER_PARAMETER_TYPE: + dissect_pe_identifier_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + case PE_CHECKSUM_PARAMETER_TYPE: + dissect_pe_checksum_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + default: + dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item); + break; + }; + + if (padding_length > 0) + proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, NETWORK_BYTE_ORDER); +} + +static void +dissect_parameters(tvbuff_t *parameters_tvb, proto_tree *tree) +{ + gint offset, length, total_length, remaining_length; + tvbuff_t *parameter_tvb; + + offset = 0; + while((remaining_length = tvb_length_remaining(parameters_tvb, offset))) { + length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET); + total_length = ADD_PADDING(length); + if (remaining_length >= length) + total_length = MIN(total_length, remaining_length); + /* create a tvb for the parameter including the padding bytes */ + parameter_tvb = tvb_new_subset(parameters_tvb, offset, total_length, total_length); + dissect_parameter(parameter_tvb, tree); + /* get rid of the handled parameter */ + offset += total_length; + } +} + +/* Dissectors for messages. This is specific to ENRP */ + +#define MESSAGE_TYPE_LENGTH 1 +#define MESSAGE_FLAGS_LENGTH 1 +#define MESSAGE_LENGTH_LENGTH 2 +#define MESSAGE_HEADER_LENGTH (MESSAGE_TYPE_LENGTH + MESSAGE_FLAGS_LENGTH + MESSAGE_LENGTH_LENGTH) + +#define MESSAGE_TYPE_OFFSET 0 +#define MESSAGE_FLAGS_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH) +#define MESSAGE_LENGTH_OFFSET (MESSAGE_FLAGS_OFFSET + MESSAGE_FLAGS_LENGTH) +#define MESSAGE_VALUE_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH) + +#define SENDER_SERVERS_ID_LENGTH 4 +#define RECEIVER_SERVERS_ID_LENGTH 4 + +#define SENDER_SERVERS_ID_OFFSET MESSAGE_VALUE_OFFSET +#define RECEIVER_SERVERS_ID_OFFSET (SENDER_SERVERS_ID_OFFSET + SENDER_SERVERS_ID_LENGTH) +#define MESSAGE_PARAMETERS_OFFSET (RECEIVER_SERVERS_ID_OFFSET + RECEIVER_SERVERS_ID_LENGTH) + +#define REPLY_REQUIRED_BIT_MASK 0x01 + +static const true_false_string reply_required_bit_value = { + "Reply required", + "Reply not required" +}; + +static void +dissect_peer_presence_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(flags_tree, hf_reply_required_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +#define OWN_CHILDREN_ONLY_BIT_MASK 0x01 + +static const true_false_string own_children_only_bit_value = { + "Only information for own PEs", + "Information for all PEs" +}; + + +static void +dissect_peer_name_table_request_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree) +{ + /* FIXME: ensure that the length is 12 bytes. */ + proto_tree_add_item(flags_tree, hf_own_children_only_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); +} + +#define REJECT_BIT_MASK 0x01 +#define MORE_TO_SEND_BIT_MASK 0x02 + +static const true_false_string reject_bit_value = { + "Rejected", + "Accepted" +}; + +static const true_false_string more_to_send_bit_value = { + "More information available", + "All information included" +}; + +static void +dissect_peer_name_table_response_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(flags_tree, hf_more_to_send_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +#define UPDATE_ACTION_LENGTH 2 +#define PNU_RESERVED_LENGTH 2 + +#define UPDATE_ACTION_OFFSET (MESSAGE_VALUE_OFFSET + SENDER_SERVERS_ID_LENGTH + RECEIVER_SERVERS_ID_LENGTH) +#define PNU_RESERVED_OFFSET (UPDATE_ACTION_OFFSET + UPDATE_ACTION_LENGTH) +#define PNU_MESSAGE_PARAMETERS_OFFSET (PNU_RESERVED_OFFSET + PNU_RESERVED_LENGTH) + +static const value_string update_action_values[] = { + { 0, "Add pool element" }, + { 1, "Delete pool element" }, + { 0, NULL } }; + +static void +dissect_peer_name_update_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_update_action, message_tvb, UPDATE_ACTION_OFFSET, UPDATE_ACTION_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_pmu_reserved, message_tvb, PNU_RESERVED_OFFSET, PNU_RESERVED_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, PNU_MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +static void +dissect_peer_list_request_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + /* FIXME: ensure that the length is 12 bytes. */ + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); +} + +static void +dissect_peer_list_response_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +#define TARGET_SERVERS_ID_LENGTH 4 +#define TARGET_SERVERS_ID_OFFSET (RECEIVER_SERVERS_ID_OFFSET + RECEIVER_SERVERS_ID_LENGTH) + +static void +dissect_peer_init_takeover_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + /* FIXME: ensure that the length is 16 bytes. */ + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); +} + +static void +dissect_peer_init_takeover_ack_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + /* FIXME: ensure that the length is 16 bytes. */ + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); +} + +static void +dissect_peer_init_takeover_server_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + /* FIXME: ensure that the length is 16 bytes. */ + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_target_servers_id, message_tvb, TARGET_SERVERS_ID_OFFSET, TARGET_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); +} + +static void +dissect_peer_ownership_change_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +static void +dissect_peer_error_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(message_tree, hf_sender_servers_id, message_tvb, SENDER_SERVERS_ID_OFFSET, SENDER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + proto_tree_add_item(message_tree, hf_receiver_servers_id, message_tvb, RECEIVER_SERVERS_ID_OFFSET, RECEIVER_SERVERS_ID_LENGTH, NETWORK_BYTE_ORDER); + parameters_tvb = tvb_new_subset(message_tvb, MESSAGE_PARAMETERS_OFFSET, -1, -1); + dissect_parameters(parameters_tvb, message_tree); +} + +static void +dissect_unknown_message(tvbuff_t *message_tvb, proto_tree *message_tree, proto_tree *flags_tree _U_) +{ + proto_tree_add_item(message_tree, hf_message_value, message_tvb, MESSAGE_VALUE_OFFSET, tvb_length(message_tvb) - MESSAGE_HEADER_LENGTH, NETWORK_BYTE_ORDER); +} + +#define PEER_PRESENCE_MESSAGE_TYPE 0x01 +#define PEER_NAME_TABLE_REQUEST_MESSAGE_TYPE 0x02 +#define PEER_NAME_TABLE_RESPONSE_MESSAGE_TYPE 0x03 +#define PEER_NAME_UPDATE_MESSAGE_TYPE 0x04 +#define PEER_LIST_REQUEST_MESSAGE_TYPE 0x05 +#define PEER_LIST_RESPONSE_MESSAGE_TYPE 0x06 +#define PEER_INIT_TAKEOVER_MESSAGE_TYPE 0x07 +#define PEER_INIT_TAKEOVER_ACK_MESSAGE_TYPE 0x08 +#define PEER_TAKEOVER_SERVER_MESSAGE_TYPE 0x09 +#define PEER_OWNERSHIP_CHANGE_MESSAGE_TYPE 0x0a +#define PEER_ERROR_MESSAGE_TYPE 0x0b + +static const value_string message_type_values[] = { + { PEER_PRESENCE_MESSAGE_TYPE, "Peer presence" }, + { PEER_NAME_TABLE_REQUEST_MESSAGE_TYPE, "Peer name table request" }, + { PEER_NAME_TABLE_RESPONSE_MESSAGE_TYPE, "Peer name table response" }, + { PEER_NAME_UPDATE_MESSAGE_TYPE, "Peer name update" }, + { PEER_LIST_REQUEST_MESSAGE_TYPE, "Peer list request" }, + { PEER_LIST_RESPONSE_MESSAGE_TYPE, "Peer list response" }, + { PEER_INIT_TAKEOVER_MESSAGE_TYPE, "Peer init takeover" }, + { PEER_INIT_TAKEOVER_ACK_MESSAGE_TYPE, "Peer init takeover ack" }, + { PEER_TAKEOVER_SERVER_MESSAGE_TYPE, "Peer takeover server" }, + { PEER_OWNERSHIP_CHANGE_MESSAGE_TYPE, "Peer ownership change" }, + { PEER_ERROR_MESSAGE_TYPE, "Peer error" }, + { 0, NULL } }; + +static void +dissect_enrp_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *enrp_tree) +{ + proto_item *flags_item; + proto_tree *flags_tree; + guint8 type; + + type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET); + if (check_col(pinfo->cinfo, COL_INFO)) + col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, message_type_values, "Unknown ENRP type")); + + if (enrp_tree) { + proto_tree_add_item(enrp_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, NETWORK_BYTE_ORDER); + flags_item = proto_tree_add_item(enrp_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, NETWORK_BYTE_ORDER); + flags_tree = proto_item_add_subtree(flags_item, ett_enrp_flags); + proto_tree_add_item(enrp_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, NETWORK_BYTE_ORDER); + switch (type) { + case PEER_PRESENCE_MESSAGE_TYPE: + dissect_peer_presence_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_NAME_TABLE_REQUEST_MESSAGE_TYPE: + dissect_peer_name_table_request_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_NAME_TABLE_RESPONSE_MESSAGE_TYPE: + dissect_peer_name_table_response_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_NAME_UPDATE_MESSAGE_TYPE: + dissect_peer_name_update_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_LIST_REQUEST_MESSAGE_TYPE: + dissect_peer_list_request_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_LIST_RESPONSE_MESSAGE_TYPE: + dissect_peer_list_response_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_INIT_TAKEOVER_MESSAGE_TYPE: + dissect_peer_init_takeover_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_INIT_TAKEOVER_ACK_MESSAGE_TYPE: + dissect_peer_init_takeover_ack_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_TAKEOVER_SERVER_MESSAGE_TYPE: + dissect_peer_init_takeover_server_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_OWNERSHIP_CHANGE_MESSAGE_TYPE: + dissect_peer_ownership_change_message(message_tvb, enrp_tree, flags_tree); + break; + case PEER_ERROR_MESSAGE_TYPE: + dissect_peer_error_message(message_tvb, enrp_tree, flags_tree); + break; + default: + dissect_unknown_message(message_tvb, enrp_tree, flags_tree); + break; + } + } +} + +static void +dissect_enrp(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_item *enrp_item; + proto_tree *enrp_tree; + + /* make entry in the Protocol column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "ENRP"); + + /* In the interest of speed, if "tree" is NULL, don't do any work not + necessary to generate protocol tree items. */ + if (tree) { + /* create the enrp protocol tree */ + enrp_item = proto_tree_add_item(tree, proto_enrp, message_tvb, 0, -1, FALSE); + enrp_tree = proto_item_add_subtree(enrp_item, ett_enrp); + } else { + enrp_tree = NULL; + }; + /* dissect the message */ + dissect_enrp_message(message_tvb, pinfo, enrp_tree); +} + +/* Register the protocol with Ethereal */ +void +proto_register_enrp(void) +{ + + /* Setup list of header fields */ + static hf_register_info hf[] = { + { &hf_message_type, { "Type", "enrp.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, "", HFILL } }, + { &hf_message_flags, { "Flags", "enrp.message_flags", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_message_length, { "Length", "enrp.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_message_value, { "Value", "enrp.message_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_cause_code, { "Cause code", "enrp.cause_code", FT_UINT16, BASE_HEX, VALS(cause_code_values), 0x0, "", HFILL } }, + { &hf_cause_length, { "Cause length", "enrp.cause_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_cause_info, { "Cause info", "enrp.cause_info", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_cause_padding, { "Padding", "enrp.cause_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_parameter_type, { "Parameter Type", "enrp.parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_type_values), 0x0, "", HFILL } }, + { &hf_parameter_length, { "Parameter length", "enrp.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_parameter_value, { "Parameter value", "enrp.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_parameter_padding, { "Padding", "enrp.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_parameter_ipv4_address, { "IP Version 4 address", "enrp.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_parameter_ipv6_address, { "IP Version 6 address", "enrp.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, "", HFILL } }, + { &hf_sctp_port, { "Port", "enrp.sctp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_transport_use, { "Transport use", "enrp.transport_use", FT_UINT16, BASE_DEC, VALS(transport_use_values), 0x0, "", HFILL } }, + { &hf_tcp_port, { "Port", "enrp.tcp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_udp_port, { "Port", "enrp.udp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_udp_reserved, { "Reserved", "enrp.udp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_policy_type, { "Policy type", "enrp.pool_member_slection_policy_type", FT_UINT8, BASE_DEC, VALS(policy_type_values), 0x0, "", HFILL } }, + { &hf_policy_value, { "Policy value", "enrp.pool_member_slection_policy_value", FT_INT24, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_pool_handle, { "Pool handle", "enrp.pool_handle_pool_handle", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_pe_pe_identifier, { "PE identifier", "enrp.pool_element_pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_home_enrp_id, { "Home ENRP server identifier", "enrp.pool_element_home_enrp_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_reg_life, { "Registration life", "enrp.pool_element_registration_life", FT_INT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_server_identifier, { "Server identifier", "enrp.server_information_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_m_bit, { "M-Bit", "enrp.server_information_m_bit", FT_BOOLEAN, 32, NULL, M_BIT_MASK, "", HFILL } }, + { &hf_reserved, { "Reserved", "enrp.server_information_reserved", FT_UINT32, BASE_HEX, NULL, RESERVED_MASK, "", HFILL } }, + { &hf_cookie, { "Cookie", "enrp.cookie", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_pe_identifier, { "PE identifier", "enrp.pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_pe_checksum, { "PE checksum", "enrp.pe_checksum", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_sender_servers_id, { "Sender server's ID", "enrp.sender_servers_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_receiver_servers_id, { "Receiver server's ID", "enrp.receiver_servers_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_target_servers_id, { "Target server's ID", "enrp.target_servers_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, + { &hf_update_action, { "Update action", "enrp.update_action", FT_UINT16, BASE_DEC, VALS(update_action_values), 0x0, "", HFILL } }, + { &hf_pmu_reserved, { "Reserved", "enrp.reserved", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL } }, + { &hf_reply_required_bit, { "R bit", "enrp.r_bit", FT_BOOLEAN, 8, TFS(&reply_required_bit_value), REPLY_REQUIRED_BIT_MASK, "", HFILL } }, + { &hf_own_children_only_bit, { "W bit", "enrp.w_bit", FT_BOOLEAN, 8, TFS(&own_children_only_bit_value), OWN_CHILDREN_ONLY_BIT_MASK, "", HFILL } }, + { &hf_more_to_send_bit, { "M bit", "enrp.m_bit", FT_BOOLEAN, 8, TFS(&more_to_send_bit_value), MORE_TO_SEND_BIT_MASK, "", HFILL } }, + { &hf_reject_bit, { "R bit", "enrp.r_bit", FT_BOOLEAN, 8, TFS(&reject_bit_value), REJECT_BIT_MASK, "", HFILL } }, + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_enrp, + &ett_enrp_parameter, + &ett_enrp_cause, + &ett_enrp_flags, + }; + + /* Register the protocol name and description */ + proto_enrp = proto_register_protocol("Endpoint Name Resolution Protocol", "ENRP", "enrp"); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_enrp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + +} + +void +proto_reg_handoff_enrp(void) +{ + dissector_handle_t enrp_handle; + + enrp_handle = create_dissector_handle(dissect_enrp, proto_enrp); + dissector_add("sctp.ppi", ENRP_PAYLOAD_PROTOCOL_ID, enrp_handle); +} |