forked from osmocom/wireshark
943 lines
48 KiB
C
943 lines
48 KiB
C
/* packet-asap.c
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* Routines for Aggregate Server Access Protocol (ASAP)
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* It is hopefully (needs testing) compliant to
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* RFC 5352
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* RFC 5354
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* RFC 5356
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* http://www.ietf.org/internet-drafts/draft-dreibholz-asap-hropt-03.txt
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* http://www.ietf.org/internet-drafts/draft-dreibholz-rserpool-delay-02.txt
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*
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* The code is not as simple as possible for the current protocol
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* but allows to be easily adopted to future versions of the protocol.
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* I will reconsider this after the protocol is an RFC.
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*
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* TODO:
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* - check message lengths
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*
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* Copyright 2004, 2005, 2006, 2007 Michael Tuexen <tuexen [AT] fh-muenster.de>
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* Copyright 2008 Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from README.developer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/to_str.h>
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#include <epan/sctpppids.h>
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#include <wsutil/str_util.h>
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void proto_register_asap(void);
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void proto_reg_handoff_asap(void);
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/* Initialize the protocol and registered fields */
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static int proto_asap = -1;
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static int hf_cause_code = -1;
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static int hf_cause_length = -1;
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static int hf_cause_info = -1;
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static int hf_cause_padding = -1;
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static int hf_message_type = -1;
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static int hf_message_flags = -1;
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static int hf_message_length = -1;
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static int hf_parameter_type = -1;
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static int hf_parameter_length = -1;
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static int hf_parameter_value = -1;
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static int hf_parameter_padding = -1;
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static int hf_parameter_ipv4_address = -1;
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static int hf_parameter_ipv6_address = -1;
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static int hf_dccp_port = -1;
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static int hf_dccp_reserved = -1;
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static int hf_dccp_service_code = -1;
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static int hf_sctp_port = -1;
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static int hf_transport_use = -1;
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static int hf_tcp_port = -1;
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static int hf_udp_port = -1;
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static int hf_udp_reserved = -1;
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static int hf_udp_lite_port = -1;
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static int hf_udp_lite_reserved = -1;
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static int hf_policy_type = -1;
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static int hf_policy_value = -1;
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static int hf_policy_weight = -1;
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static int hf_policy_priority = -1;
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static int hf_policy_load = -1;
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static int hf_policy_degradation = -1;
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static int hf_policy_loaddpf = -1;
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static int hf_policy_weightdpf = -1;
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static int hf_policy_distance = -1;
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static int hf_pool_handle = -1;
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static int hf_pe_pe_identifier = -1;
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static int hf_home_enrp_id = -1;
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static int hf_reg_life = -1;
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static int hf_server_identifier = -1;
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static int hf_cookie = -1;
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static int hf_pe_identifier = -1;
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static int hf_pe_checksum = -1;
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static int hf_hropt_items = -1;
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static int hf_home_enrp_server_bit = -1;
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static int hf_reject_bit = -1;
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/* Initialize the subtree pointers */
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static gint ett_asap = -1;
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static gint ett_asap_parameter = -1;
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static gint ett_asap_cause = -1;
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static gint ett_asap_flags = -1;
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static void
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dissect_parameters(tvbuff_t *, proto_tree *);
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static void
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dissect_parameter(tvbuff_t *, proto_tree *);
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static int
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dissect_asap(tvbuff_t *, packet_info *, proto_tree *, void *);
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#define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
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#define ASAP_UDP_PORT 3863
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#define ASAP_TCP_PORT 3863
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#define ASAP_SCTP_PORT 3863
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/* Dissectors for error causes. This is common for ASAP and ENRP. */
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#define CAUSE_CODE_LENGTH 2
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#define CAUSE_LENGTH_LENGTH 2
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#define CAUSE_HEADER_LENGTH (CAUSE_CODE_LENGTH + CAUSE_LENGTH_LENGTH)
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#define CAUSE_HEADER_OFFSET 0
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#define CAUSE_CODE_OFFSET CAUSE_HEADER_OFFSET
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#define CAUSE_LENGTH_OFFSET (CAUSE_CODE_OFFSET + CAUSE_CODE_LENGTH)
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#define CAUSE_INFO_OFFSET (CAUSE_LENGTH_OFFSET + CAUSE_LENGTH_LENGTH)
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static void
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dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
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{
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guint16 code, length, cause_info_length;
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code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
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length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
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cause_info_length = length - CAUSE_HEADER_LENGTH;
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if (cause_info_length > 0)
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proto_tree_add_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, ENC_NA);
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proto_item_append_text(cause_item, " (code %u and %u byte%s information)", code, cause_info_length, plurality(cause_info_length, "", "s"));
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}
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#define UNRECOGNIZED_PARAMETER_CAUSE_CODE 0x1
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#define UNRECONGNIZED_MESSAGE_CAUSE_CODE 0x2
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#define INVALID_VALUES 0x3
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#define NON_UNIQUE_PE_IDENTIFIER 0x4
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#define POOLING_POLICY_INCONSISTENT_CAUSE_CODE 0x5
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#define LACK_OF_RESOURCES_CAUSE_CODE 0x6
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#define INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE 0x7
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#define INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE 0x8
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#define UNKNOWN_POOL_HANDLE 0x9
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#define REJECTION_DUE_TO_SECURITY_CAUSE_CODE 0xa
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static const value_string cause_code_values[] = {
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{ UNRECOGNIZED_PARAMETER_CAUSE_CODE, "Unrecognized parameter" },
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{ UNRECONGNIZED_MESSAGE_CAUSE_CODE, "Unrecognized message" },
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{ INVALID_VALUES, "Invalid values" },
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{ NON_UNIQUE_PE_IDENTIFIER, "Non-unique PE identifier" },
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{ POOLING_POLICY_INCONSISTENT_CAUSE_CODE, "Pooling policy inconsistent" },
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{ LACK_OF_RESOURCES_CAUSE_CODE, "Lack of resources" },
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{ INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE, "Inconsistent transport type" },
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{ INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE, "Inconsistent data/control type" },
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{ UNKNOWN_POOL_HANDLE, "Unknown pool handle" },
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{ REJECTION_DUE_TO_SECURITY_CAUSE_CODE, "Rejected due to security considerations" },
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{ 0, NULL } };
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static void
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dissect_error_cause(tvbuff_t *cause_tvb, proto_tree *parameter_tree)
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{
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guint16 code, length, padding_length;
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proto_item *cause_item;
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proto_tree *cause_tree;
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tvbuff_t *parameter_tvb, *message_tvb;
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code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET);
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length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
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padding_length = tvb_reported_length(cause_tvb) - length;
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cause_tree = proto_tree_add_subtree(parameter_tree, cause_tvb, CAUSE_HEADER_OFFSET, -1, ett_asap_cause, &cause_item,
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val_to_str_const(code, cause_code_values, "Unknown error cause"));
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proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
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switch(code) {
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case UNRECOGNIZED_PARAMETER_CAUSE_CODE:
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parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
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dissect_parameter(parameter_tvb, cause_tree);
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break;
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case UNRECONGNIZED_MESSAGE_CAUSE_CODE:
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message_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
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dissect_asap(message_tvb, NULL, cause_tree, NULL);
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break;
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case INVALID_VALUES:
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parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
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dissect_parameter(parameter_tvb, cause_tree);
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break;
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case NON_UNIQUE_PE_IDENTIFIER:
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break;
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case POOLING_POLICY_INCONSISTENT_CAUSE_CODE:
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parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
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dissect_parameter(parameter_tvb, cause_tree);
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break;
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case LACK_OF_RESOURCES_CAUSE_CODE:
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break;
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case INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE:
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parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET);
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dissect_parameter(parameter_tvb, cause_tree);
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break;
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case INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE:
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break;
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case UNKNOWN_POOL_HANDLE:
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break;
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case REJECTION_DUE_TO_SECURITY_CAUSE_CODE:
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break;
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default:
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dissect_unknown_cause(cause_tvb, cause_tree, cause_item);
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break;
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}
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if (padding_length > 0)
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proto_tree_add_item(cause_tree, hf_cause_padding, cause_tvb, CAUSE_HEADER_OFFSET + length, padding_length, ENC_NA);
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}
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static void
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dissect_error_causes(tvbuff_t *error_causes_tvb, proto_tree *parameter_tree)
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{
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guint16 length, total_length;
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gint offset;
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tvbuff_t *error_cause_tvb;
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offset = 0;
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while(tvb_reported_length_remaining(error_causes_tvb, offset) > 0) {
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length = tvb_get_ntohs(error_causes_tvb, offset + CAUSE_LENGTH_OFFSET);
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total_length = ADD_PADDING(length);
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error_cause_tvb = tvb_new_subset_length(error_causes_tvb, offset , total_length);
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dissect_error_cause(error_cause_tvb, parameter_tree);
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offset += total_length;
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}
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}
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/* Dissectors for parameters. This is common for ASAP and ENRP. */
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#define PARAMETER_TYPE_LENGTH 2
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#define PARAMETER_LENGTH_LENGTH 2
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#define PARAMETER_HEADER_LENGTH (PARAMETER_TYPE_LENGTH + PARAMETER_LENGTH_LENGTH)
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#define PARAMETER_HEADER_OFFSET 0
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#define PARAMETER_TYPE_OFFSET PARAMETER_HEADER_OFFSET
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#define PARAMETER_LENGTH_OFFSET (PARAMETER_TYPE_OFFSET + PARAMETER_TYPE_LENGTH)
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#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
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#define IPV4_ADDRESS_LENGTH 4
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#define IPV4_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_ipv4_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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proto_tree_add_item(parameter_tree, hf_parameter_ipv4_address, parameter_tvb, IPV4_ADDRESS_OFFSET, IPV4_ADDRESS_LENGTH, ENC_BIG_ENDIAN);
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proto_item_append_text(parameter_item, " (%s)", tvb_ip_to_str(parameter_tvb, IPV4_ADDRESS_OFFSET));
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}
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#define IPV6_ADDRESS_LENGTH 16
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#define IPV6_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
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static void
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dissect_ipv6_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
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{
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proto_tree_add_item(parameter_tree, hf_parameter_ipv6_address, parameter_tvb, IPV6_ADDRESS_OFFSET, IPV6_ADDRESS_LENGTH, ENC_NA);
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proto_item_append_text(parameter_item, " (%s)", tvb_ip6_to_str(parameter_tvb, IPV6_ADDRESS_OFFSET));
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}
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#define DCCP_PORT_LENGTH 2
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#define DCCP_RESERVED_LENGTH 2
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#define DCCP_SERVICE_CODE_LENGTH 4
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#define DCCP_PORT_OFFSET PARAMETER_VALUE_OFFSET
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#define DCCP_RESERVED_OFFSET (DCCP_PORT_OFFSET + DCCP_PORT_LENGTH)
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#define DCCP_SERVICE_CODE_OFFSET (DCCP_RESERVED_OFFSET + DCCP_RESERVED_LENGTH)
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#define DCCP_ADDRESS_OFFSET (DCCP_SERVICE_CODE_OFFSET + DCCP_SERVICE_CODE_LENGTH)
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static void
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dissect_dccp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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tvbuff_t *parameters_tvb;
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proto_tree_add_item(parameter_tree, hf_dccp_port, parameter_tvb, DCCP_PORT_OFFSET, DCCP_PORT_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_dccp_reserved, parameter_tvb, DCCP_RESERVED_OFFSET, DCCP_RESERVED_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_dccp_service_code, parameter_tvb, DCCP_SERVICE_CODE_OFFSET, DCCP_SERVICE_CODE_LENGTH, ENC_BIG_ENDIAN);
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parameters_tvb = tvb_new_subset_remaining(parameter_tvb, DCCP_ADDRESS_OFFSET);
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dissect_parameters(parameters_tvb, parameter_tree);
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}
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#define TRANSPORT_USE_DATA_ONLY 0
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#define TRANSPORT_USE_DATA_PLUS_CONTROL 1
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static const value_string transport_use_values[] = {
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{ TRANSPORT_USE_DATA_ONLY, "Data only" },
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{ TRANSPORT_USE_DATA_PLUS_CONTROL, "Data plus control" },
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{ 0, NULL } };
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#define SCTP_PORT_LENGTH 2
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#define SCTP_TRANSPORT_USE_LENGTH 2
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#define SCTP_PORT_OFFSET PARAMETER_VALUE_OFFSET
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#define SCTP_TRANSPORT_USE_OFFSET (SCTP_PORT_OFFSET + SCTP_PORT_LENGTH)
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#define SCTP_ADDRESS_OFFSET (SCTP_TRANSPORT_USE_OFFSET + SCTP_TRANSPORT_USE_LENGTH)
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static void
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dissect_sctp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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tvbuff_t *parameters_tvb;
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proto_tree_add_item(parameter_tree, hf_sctp_port, parameter_tvb, SCTP_PORT_OFFSET, SCTP_PORT_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, SCTP_TRANSPORT_USE_OFFSET, SCTP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN);
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parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SCTP_ADDRESS_OFFSET);
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dissect_parameters(parameters_tvb, parameter_tree);
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}
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#define TCP_PORT_LENGTH 2
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#define TCP_TRANSPORT_USE_LENGTH 2
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#define TCP_PORT_OFFSET PARAMETER_VALUE_OFFSET
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#define TCP_TRANSPORT_USE_OFFSET (TCP_PORT_OFFSET + TCP_PORT_LENGTH)
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#define TCP_ADDRESS_OFFSET (TCP_TRANSPORT_USE_OFFSET + TCP_TRANSPORT_USE_LENGTH)
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static void
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dissect_tcp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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tvbuff_t *parameters_tvb;
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proto_tree_add_item(parameter_tree, hf_tcp_port, parameter_tvb, TCP_PORT_OFFSET, TCP_PORT_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, TCP_TRANSPORT_USE_OFFSET, TCP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN);
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parameters_tvb = tvb_new_subset_remaining(parameter_tvb, TCP_ADDRESS_OFFSET);
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dissect_parameters(parameters_tvb, parameter_tree);
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}
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#define UDP_PORT_LENGTH 2
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#define UDP_RESERVED_LENGTH 2
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#define UDP_PORT_OFFSET PARAMETER_VALUE_OFFSET
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#define UDP_RESERVED_OFFSET (UDP_PORT_OFFSET + UDP_PORT_LENGTH)
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#define UDP_ADDRESS_OFFSET (UDP_RESERVED_OFFSET + UDP_RESERVED_LENGTH)
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static void
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dissect_udp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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tvbuff_t *parameters_tvb;
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proto_tree_add_item(parameter_tree, hf_udp_port, parameter_tvb, UDP_PORT_OFFSET, UDP_PORT_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_udp_reserved, parameter_tvb, UDP_RESERVED_OFFSET, UDP_RESERVED_LENGTH, ENC_BIG_ENDIAN);
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parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_ADDRESS_OFFSET);
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dissect_parameters(parameters_tvb, parameter_tree);
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}
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#define UDP_LITE_PORT_LENGTH 2
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#define UDP_LITE_RESERVED_LENGTH 2
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#define UDP_LITE_PORT_OFFSET PARAMETER_VALUE_OFFSET
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#define UDP_LITE_RESERVED_OFFSET (UDP_LITE_PORT_OFFSET + UDP_LITE_PORT_LENGTH)
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#define UDP_LITE_ADDRESS_OFFSET (UDP_LITE_RESERVED_OFFSET + UDP_LITE_RESERVED_LENGTH)
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static void
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dissect_udp_lite_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
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{
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tvbuff_t *parameters_tvb;
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proto_tree_add_item(parameter_tree, hf_udp_lite_port, parameter_tvb, UDP_LITE_PORT_OFFSET, UDP_LITE_PORT_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(parameter_tree, hf_udp_lite_reserved, parameter_tvb, UDP_LITE_RESERVED_OFFSET, UDP_LITE_RESERVED_LENGTH, ENC_BIG_ENDIAN);
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parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_LITE_ADDRESS_OFFSET);
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dissect_parameters(parameters_tvb, parameter_tree);
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}
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#define POLICY_TYPE_LENGTH 4
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#define POLICY_WEIGHT_LENGTH 4
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#define POLICY_PRIORITY_LENGTH 4
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#define POLICY_LOAD_LENGTH 4
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#define POLICY_DEGRADATION_LENGTH 4
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#define POLICY_LUDPF_LOADDPF_LENGTH 4
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#define POLICY_LUDPF_DISTANCE_LENGTH 4
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#define POLICY_WRANDDPF_WEIGHTDPF_LENGTH 4
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#define POLICY_WRANDDPF_DISTANCE_LENGTH 4
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#define POLICY_TYPE_OFFSET PARAMETER_VALUE_OFFSET
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#define POLICY_VALUE_OFFSET (POLICY_TYPE_OFFSET + POLICY_TYPE_LENGTH)
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#define POLICY_WEIGHT_OFFSET POLICY_VALUE_OFFSET
|
|
#define POLICY_PRIORITY_OFFSET POLICY_VALUE_OFFSET
|
|
#define POLICY_LOAD_OFFSET POLICY_VALUE_OFFSET
|
|
#define POLICY_DEGRADATION_OFFSET (POLICY_LOAD_OFFSET + POLICY_LOAD_LENGTH)
|
|
|
|
#define POLICY_LUDPF_LOADDPF_OFFSET (POLICY_LOAD_OFFSET + POLICY_LOAD_LENGTH)
|
|
#define POLICY_LUDPF_DISTANCE_OFFSET (POLICY_LUDPF_LOADDPF_OFFSET + POLICY_LUDPF_LOADDPF_LENGTH)
|
|
#define POLICY_WRANDDPF_WEIGHTDPF_OFFSET (POLICY_WEIGHT_OFFSET + POLICY_WEIGHT_LENGTH)
|
|
#define POLICY_WRANDDPF_DISTANCE_OFFSET (POLICY_WRANDDPF_WEIGHTDPF_OFFSET + POLICY_WRANDDPF_WEIGHTDPF_LENGTH)
|
|
|
|
|
|
#define ROUND_ROBIN_POLICY 0x00000001
|
|
#define WEIGHTED_ROUND_ROBIN_POLICY 0x00000002
|
|
#define RANDOM_POLICY 0x00000003
|
|
#define WEIGHTED_RANDOM_POLICY 0x00000004
|
|
#define PRIORITY_POLICY 0x00000005
|
|
#define LEAST_USED_POLICY 0x40000001
|
|
#define LEAST_USED_WITH_DEG_POLICY 0x40000002
|
|
#define PRIORITY_LEAST_USED_POLICY 0x40000003
|
|
#define RANDOMIZED_LEAST_USED_POLICY 0x40000004
|
|
|
|
#define PRIORITY_LEAST_USED_DEG_POLICY 0xb0001003
|
|
#define WEIGHTED_RANDOM_DPF_POLICY 0xb0002001
|
|
#define LEAST_USED_DPF_POLICY 0xb0002002
|
|
|
|
static const value_string policy_type_values[] = {
|
|
{ ROUND_ROBIN_POLICY, "Round Robin (RR)" },
|
|
{ WEIGHTED_ROUND_ROBIN_POLICY, "Weighted Round Robin (WRR)" },
|
|
{ RANDOM_POLICY, "Random (RAND)"},
|
|
{ WEIGHTED_RANDOM_POLICY, "Weighted Random (WRAND)" },
|
|
{ PRIORITY_POLICY, "Priority (PRI)" },
|
|
{ LEAST_USED_POLICY, "Least Used (LU)" },
|
|
{ LEAST_USED_WITH_DEG_POLICY, "Least Used with Degradation (LUD)" },
|
|
{ PRIORITY_LEAST_USED_POLICY, "Priority Least Used (PLU)" },
|
|
{ PRIORITY_LEAST_USED_DEG_POLICY, "Priority Least Used with Degradation (PLUD)" },
|
|
{ RANDOMIZED_LEAST_USED_POLICY, "Randomized Least Used (RLU)" },
|
|
{ LEAST_USED_DPF_POLICY, "Least Used with Delay Penalty Factor (LU-DPF)" },
|
|
{ WEIGHTED_RANDOM_DPF_POLICY, "Weighted Random with Delay Penalty Factor (WRAND-DPF)" },
|
|
{ 0, NULL } };
|
|
|
|
static void
|
|
dissect_pool_member_selection_policy_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
|
|
{
|
|
guint32 type;
|
|
guint length;
|
|
|
|
proto_tree_add_item(parameter_tree, hf_policy_type, parameter_tvb, POLICY_TYPE_OFFSET, POLICY_TYPE_LENGTH, ENC_BIG_ENDIAN);
|
|
type = tvb_get_ntohl(parameter_tvb, POLICY_TYPE_OFFSET);
|
|
switch (type) {
|
|
case RANDOM_POLICY:
|
|
case ROUND_ROBIN_POLICY:
|
|
break;
|
|
case WEIGHTED_RANDOM_POLICY:
|
|
case WEIGHTED_ROUND_ROBIN_POLICY:
|
|
proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN);
|
|
break;
|
|
case PRIORITY_POLICY:
|
|
proto_tree_add_item(parameter_tree, hf_policy_priority, parameter_tvb, POLICY_PRIORITY_OFFSET, POLICY_PRIORITY_LENGTH, ENC_BIG_ENDIAN);
|
|
break;
|
|
case LEAST_USED_POLICY:
|
|
case RANDOMIZED_LEAST_USED_POLICY:
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
|
|
break;
|
|
case LEAST_USED_WITH_DEG_POLICY:
|
|
case PRIORITY_LEAST_USED_POLICY:
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_degradation, parameter_tvb, POLICY_DEGRADATION_OFFSET, POLICY_DEGRADATION_LENGTH,
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff, "%1.2f%%",
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_DEGRADATION_OFFSET) / (double)0xffffffff);
|
|
break;
|
|
case LEAST_USED_DPF_POLICY:
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_load, parameter_tvb, POLICY_LOAD_OFFSET, POLICY_LOAD_LENGTH,
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff, "%1.2f%%",
|
|
100.0 * tvb_get_ntohl(parameter_tvb, POLICY_LOAD_OFFSET) / (double)0xffffffff);
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_loaddpf, parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET, POLICY_LUDPF_LOADDPF_LENGTH,
|
|
tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff, "%1.5f",
|
|
tvb_get_ntohl(parameter_tvb, POLICY_LUDPF_LOADDPF_OFFSET) / (double)0xffffffff);
|
|
proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_LUDPF_DISTANCE_OFFSET, POLICY_LUDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN);
|
|
break;
|
|
case WEIGHTED_RANDOM_DPF_POLICY:
|
|
proto_tree_add_item(parameter_tree, hf_policy_weight, parameter_tvb, POLICY_WEIGHT_OFFSET, POLICY_WEIGHT_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_tree_add_double_format_value(parameter_tree, hf_policy_weightdpf, parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET, POLICY_WRANDDPF_WEIGHTDPF_LENGTH,
|
|
tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff, "%1.5f",
|
|
tvb_get_ntohl(parameter_tvb, POLICY_WRANDDPF_WEIGHTDPF_OFFSET) / (double)0xffffffff);
|
|
proto_tree_add_item(parameter_tree, hf_policy_distance, parameter_tvb, POLICY_WRANDDPF_DISTANCE_OFFSET, POLICY_WRANDDPF_DISTANCE_LENGTH, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
length = tvb_reported_length(parameter_tvb) - POLICY_VALUE_OFFSET;
|
|
if (length > 0) {
|
|
proto_tree_add_item(parameter_tree, hf_policy_value, parameter_tvb, POLICY_VALUE_OFFSET, length, ENC_NA);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define POOL_HANDLE_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_pool_handle_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
|
|
{
|
|
guint16 handle_length;
|
|
proto_item* pi;
|
|
|
|
handle_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
|
|
pi = proto_tree_add_item(parameter_tree, hf_pool_handle, parameter_tvb, POOL_HANDLE_OFFSET, handle_length, ENC_NA);
|
|
|
|
proto_item_append_text(pi, " (%s)",
|
|
tvb_format_text(parameter_tvb, POOL_HANDLE_OFFSET, handle_length));
|
|
}
|
|
|
|
#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_item* pi;
|
|
|
|
proto_tree_add_item(parameter_tree, hf_pe_pe_identifier, parameter_tvb, PE_PE_IDENTIFIER_OFFSET, PE_PE_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(parameter_tree, hf_home_enrp_id, parameter_tvb, HOME_ENRP_INDENTIFIER_OFFSET, HOME_ENRP_INDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
|
|
pi = proto_tree_add_item(parameter_tree, hf_reg_life, parameter_tvb, REGISTRATION_LIFE_OFFSET, REGISTRATION_LIFE_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(pi, "ms");
|
|
|
|
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, USER_TRANSPORT_PARAMETER_OFFSET);
|
|
dissect_parameters(parameters_tvb, parameter_tree);
|
|
}
|
|
|
|
#define SERVER_ID_LENGTH 4
|
|
#define SERVER_ID_OFFSET PARAMETER_VALUE_OFFSET
|
|
#define SERVER_TRANSPORT_OFFSET (SERVER_ID_OFFSET + SERVER_ID_LENGTH)
|
|
|
|
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, ENC_BIG_ENDIAN);
|
|
|
|
parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SERVER_TRANSPORT_OFFSET);
|
|
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_remaining(parameter_tvb, ERROR_CAUSES_OFFSET);
|
|
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, ENC_NA);
|
|
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, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohl(parameter_tvb, PE_IDENTIFIER_OFFSET));
|
|
}
|
|
|
|
#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_checksum(parameter_tree, parameter_tvb, PE_CHECKSUM_OFFSET, hf_pe_checksum, -1, NULL, NULL, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
|
|
proto_item_append_text(parameter_item, " (0x%x)", tvb_get_ntohs(parameter_tvb, PE_CHECKSUM_OFFSET));
|
|
}
|
|
|
|
#define HROPT_ITEMS_LENGTH 4
|
|
#define HROPT_ITEMS_OFFSET PARAMETER_VALUE_OFFSET
|
|
|
|
static void
|
|
dissect_handle_resolution_option_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
|
|
{
|
|
proto_tree_add_item(parameter_tree, hf_hropt_items, parameter_tvb, HROPT_ITEMS_OFFSET, HROPT_ITEMS_LENGTH, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
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, ENC_NA);
|
|
|
|
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 DCCP_TRANSPORT_PARAMETER_TYPE 0x03
|
|
#define SCTP_TRANSPORT_PARAMETER_TYPE 0x04
|
|
#define TCP_TRANSPORT_PARAMETER_TYPE 0x05
|
|
#define UDP_TRANSPORT_PARAMETER_TYPE 0x06
|
|
#define UDP_LITE_TRANSPORT_PARAMETER_TYPE 0x07
|
|
#define POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE 0x08
|
|
#define POOL_HANDLE_PARAMETER_TYPE 0x09
|
|
#define POOL_ELEMENT_PARAMETER_TYPE 0x0a
|
|
#define SERVER_INFORMATION_PARAMETER_TYPE 0x0b
|
|
#define OPERATION_ERROR_PARAMETER_TYPE 0x0c
|
|
#define COOKIE_PARAMETER_TYPE 0x0d
|
|
#define PE_IDENTIFIER_PARAMETER_TYPE 0x0e
|
|
#define PE_CHECKSUM_PARAMETER_TYPE 0x0f
|
|
#define HANDLE_RESOLUTION_OPTION_PARAMETER_TYPE 0x803f
|
|
|
|
static const value_string parameter_type_values[] = {
|
|
{ IPV4_ADDRESS_PARAMETER_TYPE, "IPV4 Address Parameter" },
|
|
{ IPV6_ADDRESS_PARAMETER_TYPE, "IPV6 Address Parameter" },
|
|
{ DCCP_TRANSPORT_PARAMETER_TYPE, "DCCP Transport Address Parameter" },
|
|
{ SCTP_TRANSPORT_PARAMETER_TYPE, "SCTP Transport Address Parameter" },
|
|
{ TCP_TRANSPORT_PARAMETER_TYPE, "TCP Transport Address Parameter" },
|
|
{ UDP_TRANSPORT_PARAMETER_TYPE, "UDP Transport Address Parameter" },
|
|
{ UDP_LITE_TRANSPORT_PARAMETER_TYPE, "UDP-Lite Transport Address Parameter" },
|
|
{ POOL_MEMBER_SELECTION_POLICY_PARAMETER_TYPE, "Pool Member Selection Policy Parameter" },
|
|
{ POOL_HANDLE_PARAMETER_TYPE, "Pool Handle Parameter" },
|
|
{ POOL_ELEMENT_PARAMETER_TYPE, "Pool Element Parameter" },
|
|
{ SERVER_INFORMATION_PARAMETER_TYPE, "Server Information Parameter" },
|
|
{ OPERATION_ERROR_PARAMETER_TYPE, "Operation Error Parameter" },
|
|
{ COOKIE_PARAMETER_TYPE, "Cookie Parameter" },
|
|
{ PE_IDENTIFIER_PARAMETER_TYPE, "Pool Element Identifier Parameter" },
|
|
{ PE_CHECKSUM_PARAMETER_TYPE, "PE Checksum Parameter" },
|
|
{ HANDLE_RESOLUTION_OPTION_PARAMETER_TYPE, "Handle Resolution Option Parameter" },
|
|
{ 0, NULL } };
|
|
|
|
|
|
static void
|
|
dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *asap_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_reported_length(parameter_tvb) - length;
|
|
|
|
/* create proto_tree stuff */
|
|
parameter_tree = proto_tree_add_subtree(asap_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1,
|
|
ett_asap_parameter, ¶meter_item, val_to_str_const(type, parameter_type_values, "Unknown Parameter"));
|
|
|
|
/* add tag and length to the asap tree */
|
|
proto_tree_add_item(parameter_tree, hf_parameter_type, parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
|
|
|
|
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 DCCP_TRANSPORT_PARAMETER_TYPE:
|
|
dissect_dccp_transport_parameter(parameter_tvb, parameter_tree);
|
|
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 UDP_LITE_TRANSPORT_PARAMETER_TYPE:
|
|
dissect_udp_lite_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;
|
|
case HANDLE_RESOLUTION_OPTION_PARAMETER_TYPE:
|
|
dissect_handle_resolution_option_parameter(parameter_tvb, parameter_tree);
|
|
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, ENC_NA);
|
|
}
|
|
|
|
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_reported_length_remaining(parameters_tvb, offset)) > 0) {
|
|
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_length(parameters_tvb, offset, total_length);
|
|
dissect_parameter(parameter_tvb, tree);
|
|
/* get rid of the handled parameter */
|
|
offset += total_length;
|
|
}
|
|
}
|
|
|
|
/* Dissectors for messages. This is specific to ASAP */
|
|
|
|
#define MESSAGE_TYPE_LENGTH 1
|
|
#define MESSAGE_FLAGS_LENGTH 1
|
|
#define MESSAGE_LENGTH_LENGTH 2
|
|
|
|
#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 REGISTRATION_MESSAGE_TYPE 0x01
|
|
#define DEREGISTRATION_MESSAGE_TYPE 0x02
|
|
#define REGISTRATION_RESPONSE_MESSAGE_TYPE 0x03
|
|
#define DEREGISTRATION_RESPONSE_MESSAGE_TYPE 0x04
|
|
#define HANDLE_RESOLUTION_MESSAGE_TYPE 0x05
|
|
#define HANDLE_RESOLUTION_RESPONSE_MESSAGE_TYPE 0x06
|
|
#define ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE 0x07
|
|
#define ENDPOINT_KEEP_ALIVE_ACK_MESSAGE_TYPE 0x08
|
|
#define ENDPOINT_UNREACHABLE_MESSAGE_TYPE 0x09
|
|
#define SERVER_ANNOUNCE_MESSAGE_TYPE 0x0a
|
|
#define COOKIE_MESSAGE_TYPE 0x0b
|
|
#define COOKIE_ECHO_MESSAGE_TYPE 0x0c
|
|
#define BUSINESS_CARD_MESSAGE_TYPE 0x0d
|
|
#define ERROR_MESSAGE_TYPE 0x0e
|
|
|
|
static const value_string message_type_values[] = {
|
|
{ REGISTRATION_MESSAGE_TYPE, "ASAP Registration" },
|
|
{ DEREGISTRATION_MESSAGE_TYPE, "ASAP Deregistration" },
|
|
{ REGISTRATION_RESPONSE_MESSAGE_TYPE, "ASAP Registration Response" },
|
|
{ DEREGISTRATION_RESPONSE_MESSAGE_TYPE, "ASAP Deregistration Response" },
|
|
{ HANDLE_RESOLUTION_MESSAGE_TYPE, "ASAP Handle Resolution" },
|
|
{ HANDLE_RESOLUTION_RESPONSE_MESSAGE_TYPE, "ASAP Handle Resolution Response" },
|
|
{ ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE, "ASAP Endpoint Keep-Alive" },
|
|
{ ENDPOINT_KEEP_ALIVE_ACK_MESSAGE_TYPE, "ASAP Endpoint Keep-Alive Acknowledgement" },
|
|
{ ENDPOINT_UNREACHABLE_MESSAGE_TYPE, "ASAP Endpoint Unreachable" },
|
|
{ SERVER_ANNOUNCE_MESSAGE_TYPE, "ASAP Server Announce" },
|
|
{ COOKIE_MESSAGE_TYPE, "ASAP Cookie" },
|
|
{ COOKIE_ECHO_MESSAGE_TYPE, "ASAP Cookie Echo" },
|
|
{ BUSINESS_CARD_MESSAGE_TYPE, "ASAP Business Card" },
|
|
{ ERROR_MESSAGE_TYPE, "ASAP Error" },
|
|
{ 0, NULL } };
|
|
|
|
#define SERVER_IDENTIFIER_OFFSET MESSAGE_VALUE_OFFSET
|
|
#define SERVER_IDENTIFIER_LENGTH 4
|
|
|
|
#define HOME_ENRP_SERVER_BIT_MASK 0x01
|
|
#define REJECT_BIT_MASK 0x01
|
|
|
|
static const true_false_string home_enrp_server_bit_value = {
|
|
"Want to be new ENRP server",
|
|
"Do not want to be new ENRP server"
|
|
};
|
|
|
|
static const true_false_string reject_bit_value = {
|
|
"Rejected",
|
|
"Accepted"
|
|
};
|
|
|
|
static void
|
|
dissect_asap_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *asap_tree)
|
|
{
|
|
tvbuff_t *parameters_tvb;
|
|
proto_item *flags_item;
|
|
proto_tree *flags_tree;
|
|
guint8 type;
|
|
|
|
|
|
type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET);
|
|
/* pinfo is NULL only if dissect_asap_message is called via dissect_error_cause */
|
|
if (pinfo)
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str_const(type, message_type_values, "Unknown ASAP type"));
|
|
|
|
if (asap_tree) {
|
|
proto_tree_add_item(asap_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, ENC_BIG_ENDIAN);
|
|
flags_item = proto_tree_add_item(asap_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
|
|
flags_tree = proto_item_add_subtree(flags_item, ett_asap_flags);
|
|
if (type == REGISTRATION_RESPONSE_MESSAGE_TYPE) {
|
|
proto_tree_add_item(flags_tree, hf_reject_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
|
|
}
|
|
if (type == ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE) {
|
|
proto_tree_add_item(flags_tree, hf_home_enrp_server_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
|
|
}
|
|
proto_tree_add_item(asap_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
|
|
if ((type == SERVER_ANNOUNCE_MESSAGE_TYPE) || (type == ENDPOINT_KEEP_ALIVE_MESSAGE_TYPE)) {
|
|
proto_tree_add_item(asap_tree, hf_server_identifier, message_tvb, SERVER_IDENTIFIER_OFFSET, SERVER_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
|
|
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_VALUE_OFFSET + SERVER_IDENTIFIER_LENGTH);
|
|
} else {
|
|
parameters_tvb = tvb_new_subset_remaining(message_tvb, MESSAGE_VALUE_OFFSET);
|
|
}
|
|
dissect_parameters(parameters_tvb, asap_tree);
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_asap(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *asap_item;
|
|
proto_tree *asap_tree;
|
|
|
|
/* pinfo is NULL only if dissect_asap is called from dissect_error_cause */
|
|
if (pinfo)
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ASAP");
|
|
|
|
/* create the asap protocol tree */
|
|
asap_item = proto_tree_add_item(tree, proto_asap, message_tvb, 0, -1, ENC_NA);
|
|
asap_tree = proto_item_add_subtree(asap_item, ett_asap);
|
|
|
|
/* dissect the message */
|
|
dissect_asap_message(message_tvb, pinfo, asap_tree);
|
|
return tvb_captured_length(message_tvb);
|
|
}
|
|
|
|
/* Register the protocol with Wireshark */
|
|
void
|
|
proto_register_asap(void)
|
|
{
|
|
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
{ &hf_message_type, { "Type", "asap.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } },
|
|
{ &hf_message_flags, { "Flags", "asap.message_flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_message_length, { "Length", "asap.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_cause_code, { "Cause Code", "asap.cause_code", FT_UINT16, BASE_HEX, VALS(cause_code_values), 0x0, NULL, HFILL } },
|
|
{ &hf_cause_length, { "Cause Length", "asap.cause_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_cause_info, { "Cause Info", "asap.cause_info", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_cause_padding, { "Padding", "asap.cause_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_type, { "Parameter Type", "asap.parameter_type", FT_UINT16, BASE_HEX, VALS(parameter_type_values), 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_length, { "Parameter Length", "asap.parameter_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_value, { "Parameter Value", "asap.parameter_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_padding, { "Padding", "asap.parameter_padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_ipv4_address, { "IP Version 4 Address", "asap.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_parameter_ipv6_address, { "IP Version 6 Address", "asap.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_dccp_port, { "Port", "asap.dccp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_dccp_reserved, { "Reserved", "asap.dccp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_dccp_service_code, { "Service Code", "asap.dccp_transport_service_code", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_sctp_port, { "Port", "asap.sctp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_transport_use, { "Transport Use", "asap.transport_use", FT_UINT16, BASE_DEC, VALS(transport_use_values), 0x0, NULL, HFILL } },
|
|
{ &hf_tcp_port, { "Port", "asap.tcp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_udp_port, { "Port", "asap.udp_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_udp_reserved, { "Reserved", "asap.udp_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_udp_lite_port, { "Port", "asap.udp_lite_transport_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_udp_lite_reserved, { "Reserved", "asap.udp_lite_transport_reserved", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_type, { "Policy Type", "asap.pool_member_selection_policy_type", FT_UINT32, BASE_HEX, VALS(policy_type_values), 0x0, NULL, HFILL } },
|
|
{ &hf_policy_weight, { "Policy Weight", "asap.pool_member_selection_policy_weight", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_priority, { "Policy Priority", "asap.pool_member_selection_policy_priority", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_load, { "Policy Load", "asap.pool_member_selection_policy_load", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_degradation, { "Policy Degradation", "asap.pool_member_selection_policy_degradation", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_loaddpf, { "Policy Load DPF", "asap.pool_member_selection_policy_load_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_weightdpf, { "Policy Weight DPF", "asap.pool_member_selection_policy_weight_dpf", FT_DOUBLE, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_distance, { "Policy Distance", "asap.pool_member_selection_policy_distance", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_policy_value, { "Policy Value", "asap.pool_member_selection_policy_value", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_pool_handle, { "Pool Handle", "asap.pool_handle_pool_handle", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_pe_pe_identifier, { "PE Identifier", "asap.pool_element_pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_home_enrp_id, { "Home ENRP Server Identifier", "asap.pool_element_home_enrp_server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_reg_life, { "Registration Life", "asap.pool_element_registration_life", FT_INT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_cookie, { "Cookie", "asap.cookie", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_pe_identifier, { "PE Identifier", "asap.pe_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_pe_checksum, { "PE Checksum", "asap.pe_checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_hropt_items, { "Items", "asap.hropt_items", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_server_identifier, { "Server Identifier", "asap.server_identifier", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } },
|
|
{ &hf_home_enrp_server_bit, { "H Bit", "asap.h_bit", FT_BOOLEAN, 8, TFS(&home_enrp_server_bit_value), HOME_ENRP_SERVER_BIT_MASK, NULL, HFILL } },
|
|
{ &hf_reject_bit, { "R Bit", "asap.r_bit", FT_BOOLEAN, 8, TFS(&reject_bit_value), REJECT_BIT_MASK, NULL, HFILL } },
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_asap,
|
|
&ett_asap_flags,
|
|
&ett_asap_parameter,
|
|
&ett_asap_cause,
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_asap = proto_register_protocol("Aggregate Server Access Protocol", "ASAP", "asap");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_asap, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_asap(void)
|
|
{
|
|
dissector_handle_t asap_handle;
|
|
|
|
asap_handle = create_dissector_handle(dissect_asap, proto_asap);
|
|
dissector_add_uint("sctp.ppi", ASAP_PAYLOAD_PROTOCOL_ID, asap_handle);
|
|
dissector_add_uint("udp.port", ASAP_UDP_PORT, asap_handle);
|
|
dissector_add_uint("tcp.port", ASAP_TCP_PORT, asap_handle);
|
|
dissector_add_uint("sctp.port", ASAP_SCTP_PORT, asap_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|