diff options
Diffstat (limited to 'epan/dissectors/packet-asap.c')
| -rw-r--r-- | epan/dissectors/packet-asap.c | 973 |
1 files changed, 973 insertions, 0 deletions
diff --git a/epan/dissectors/packet-asap.c b/epan/dissectors/packet-asap.c new file mode 100644 index 0000000..f33f4ee --- /dev/null +++ b/epan/dissectors/packet-asap.c @@ -0,0 +1,973 @@ +/* packet-asap.c + * Routines for Aggregate Server Access Protocol (ASAP) + * It is hopefully (needs testing) compliant to + * RFC 5352 + * RFC 5354 + * RFC 5356 + * https://tools.ietf.org/html/draft-dreibholz-rserpool-asap-hropt-27 + * https://tools.ietf.org/html/draft-dreibholz-rserpool-delay-26 + * + * Copyright 2008-2021 Thomas Dreibholz <dreibh [AT] iem.uni-due.de> + * Copyright 2004-2007 Michael Tüxen <tuexen [AT] fh-muenster.de> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * Copied from README.developer + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/to_str.h> +#include <epan/sctpppids.h> +#include <epan/stat_tap_ui.h> + +#include <wsutil/str_util.h> +#include <wsutil/ws_roundup.h> + +#include "packet-asap+enrp-common.h" + +void proto_register_asap(void); +void proto_reg_handoff_asap(void); + +static dissector_handle_t asap_handle; + +/* Initialize the protocol and registered fields */ +static int asap_tap = -1; +static int proto_asap = -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_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_dccp_port = -1; +static int hf_dccp_reserved = -1; +static int hf_dccp_service_code = -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_udp_lite_port = -1; +static int hf_udp_lite_reserved = -1; +static int hf_policy_type = -1; +static int hf_policy_value = -1; +static int hf_policy_weight = -1; +static int hf_policy_priority = -1; +static int hf_policy_load = -1; +static int hf_policy_degradation = -1; +static int hf_policy_loaddpf = -1; +static int hf_policy_weightdpf = -1; +static int hf_policy_distance = -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_cookie = -1; +static int hf_pe_identifier = -1; +static int hf_pe_checksum = -1; +static int hf_hropt_items = -1; +static int hf_home_enrp_server_bit = -1; +static int hf_reject_bit = -1; + +/* Initialize the subtree pointers */ +static gint ett_asap = -1; +static gint ett_asap_parameter = -1; +static gint ett_asap_cause = -1; +static gint ett_asap_flags = -1; + +static guint64 asap_total_msgs = 0; +static guint64 asap_total_bytes = 0; + +static void +dissect_parameters(tvbuff_t *, proto_tree *); +static void +dissect_parameter(tvbuff_t *, proto_tree *); +static int +dissect_asap(tvbuff_t *, packet_info *, proto_tree *, void *); + +#define ASAP_UDP_PORT 3863 +#define ASAP_TCP_PORT 3863 +#define ASAP_SCTP_PORT 3863 + +typedef struct _asap_tap_rec_t { + guint8 type; + guint16 size; + const char* type_string; +} asap_tap_rec_t; + +/* Dissectors for error causes. This is common for ASAP and ENRP. */ + +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_item(cause_tree, hf_cause_info, cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, ENC_NA); + proto_item_append_text(cause_item, " (code %u and %u byte%s information)", code, cause_info_length, plurality(cause_info_length, "", "s")); +} + +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; + tvbuff_t *parameter_tvb, *message_tvb; + + code = tvb_get_ntohs(cause_tvb, CAUSE_CODE_OFFSET); + length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET); + padding_length = tvb_reported_length(cause_tvb) - length; + + cause_tree = proto_tree_add_subtree(parameter_tree, cause_tvb, CAUSE_HEADER_OFFSET, -1, ett_asap_cause, &cause_item, + val_to_str_const(code, cause_code_values, "Unknown error cause")); + + proto_tree_add_item(cause_tree, hf_cause_code, cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH, ENC_BIG_ENDIAN); + proto_tree_add_item(cause_tree, hf_cause_length, cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH, ENC_BIG_ENDIAN); + + switch(code) { + case UNRECOGNIZED_PARAMETER_CAUSE_CODE: + parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); + dissect_parameter(parameter_tvb, cause_tree); + break; + case UNRECONGNIZED_MESSAGE_CAUSE_CODE: + message_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); + dissect_asap(message_tvb, NULL, cause_tree, NULL); + break; + case INVALID_VALUES: + parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); + dissect_parameter(parameter_tvb, cause_tree); + break; + case NON_UNIQUE_PE_IDENTIFIER: + break; + case POOLING_POLICY_INCONSISTENT_CAUSE_CODE: + parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); + dissect_parameter(parameter_tvb, cause_tree); + break; + case LACK_OF_RESOURCES_CAUSE_CODE: + break; + case INCONSISTENT_TRANSPORT_TYPE_CAUSE_CODE: + parameter_tvb = tvb_new_subset_remaining(cause_tvb, CAUSE_INFO_OFFSET); + dissect_parameter(parameter_tvb, cause_tree); + break; + case INCONSISTENT_DATA_CONTROL_CONFIGURATION_CAUSE_CODE: + break; + case UNKNOWN_POOL_HANDLE: + break; + case REJECTION_DUE_TO_SECURITY_CAUSE_CODE: + break; + 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, ENC_NA); +} + +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) > 0) { + length = tvb_get_ntohs(error_causes_tvb, offset + CAUSE_LENGTH_OFFSET); + total_length = WS_ROUNDUP_4(length); + error_cause_tvb = tvb_new_subset_length(error_causes_tvb, offset , total_length); + dissect_error_cause(error_cause_tvb, parameter_tree); + offset += total_length; + } +} + +/* Dissectors for parameters. This is common for ASAP and ENRP. */ + +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, ENC_BIG_ENDIAN); + proto_item_append_text(parameter_item, " (%s)", tvb_ip_to_str(wmem_packet_scope(), parameter_tvb, IPV4_ADDRESS_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, ENC_NA); + proto_item_append_text(parameter_item, " (%s)", tvb_ip6_to_str(wmem_packet_scope(), parameter_tvb, IPV6_ADDRESS_OFFSET)); +} + +static void +dissect_dccp_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_dccp_port, parameter_tvb, DCCP_PORT_OFFSET, DCCP_PORT_LENGTH, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_dccp_reserved, parameter_tvb, DCCP_RESERVED_OFFSET, DCCP_RESERVED_LENGTH, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_dccp_service_code, parameter_tvb, DCCP_SERVICE_CODE_OFFSET, DCCP_SERVICE_CODE_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, DCCP_ADDRESS_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +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, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, SCTP_TRANSPORT_USE_OFFSET, SCTP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, SCTP_ADDRESS_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +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, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_transport_use, parameter_tvb, TCP_TRANSPORT_USE_OFFSET, TCP_TRANSPORT_USE_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, TCP_ADDRESS_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +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, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_udp_reserved, parameter_tvb, UDP_RESERVED_OFFSET, UDP_RESERVED_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_ADDRESS_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +static void +dissect_udp_lite_transport_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree) +{ + tvbuff_t *parameters_tvb; + + proto_tree_add_item(parameter_tree, hf_udp_lite_port, parameter_tvb, UDP_LITE_PORT_OFFSET, UDP_LITE_PORT_LENGTH, ENC_BIG_ENDIAN); + proto_tree_add_item(parameter_tree, hf_udp_lite_reserved, parameter_tvb, UDP_LITE_RESERVED_OFFSET, UDP_LITE_RESERVED_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, UDP_LITE_ADDRESS_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +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; + } +} + +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(wmem_packet_scope(), parameter_tvb, POOL_HANDLE_OFFSET, handle_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, 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); + proto_tree_add_item(parameter_tree, hf_reg_life, parameter_tvb, REGISTRATION_LIFE_OFFSET, REGISTRATION_LIFE_LENGTH, ENC_BIG_ENDIAN); + + parameters_tvb = tvb_new_subset_remaining(parameter_tvb, USER_TRANSPORT_PARAMETER_OFFSET); + dissect_parameters(parameters_tvb, parameter_tree); +} + +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); +} + +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); +} + +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")); +} + +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)); +} + +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)); +} + +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")); +} + +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 = WS_ROUNDUP_4(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 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) +{ + asap_tap_rec_t *tap_rec; + 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) { + tap_rec = wmem_new0(pinfo->pool, asap_tap_rec_t); + tap_rec->type = type; + tap_rec->size = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET); + tap_rec->type_string = val_to_str_const(tap_rec->type, message_type_values, "Unknown ASAP type"); + tap_queue_packet(asap_tap, pinfo, tap_rec); + + 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); +} + +/* TAP STAT INFO */ +typedef enum +{ + MESSAGE_TYPE_COLUMN = 0, + MESSAGES_COLUMN, + MESSAGES_SHARE_COLUMN, + BYTES_COLUMN, + BYTES_SHARE_COLUMN, + FIRST_SEEN_COLUMN, + LAST_SEEN_COLUMN, + INTERVAL_COLUMN, + MESSAGE_RATE_COLUMN, + BYTE_RATE_COLUMN +} asap_stat_columns; + +static stat_tap_table_item asap_stat_fields[] = { + { TABLE_ITEM_STRING, TAP_ALIGN_LEFT, "ASAP Message Type", "%-25s" }, + { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages ", "%u" }, + { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Messages Share (%)" , "%1.3f %%" }, + { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes (B)", "%u" }, + { TABLE_ITEM_UINT, TAP_ALIGN_RIGHT, "Bytes Share (%) ", "%1.3f %%" }, + { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "First Seen (s)", "%1.6f" }, + { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Last Seen (s)", "%1.6f" }, + { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Interval (s)", "%1.6f" }, + { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Message Rate (Msg/s)", "%1.2f" }, + { TABLE_ITEM_FLOAT, TAP_ALIGN_LEFT, "Byte Rate (B/s)", "%1.2f" } +}; + +static void asap_stat_init(stat_tap_table_ui* new_stat) +{ + const char *table_name = "ASAP Statistics"; + int num_fields = sizeof(asap_stat_fields)/sizeof(stat_tap_table_item); + stat_tap_table *table; + int i = 0; + stat_tap_table_item_type items[sizeof(asap_stat_fields)/sizeof(stat_tap_table_item)]; + + table = stat_tap_find_table(new_stat, table_name); + if (table) { + if (new_stat->stat_tap_reset_table_cb) { + new_stat->stat_tap_reset_table_cb(table); + } + return; + } + + table = stat_tap_init_table(table_name, num_fields, 0, NULL); + stat_tap_add_table(new_stat, table); + + memset(items, 0x0, sizeof(items)); + /* Add a row for each value type */ + while (message_type_values[i].strptr) { + items[MESSAGE_TYPE_COLUMN].type = TABLE_ITEM_STRING; + items[MESSAGE_TYPE_COLUMN].value.string_value = message_type_values[i].strptr; + items[MESSAGES_COLUMN].type = TABLE_ITEM_UINT; + items[MESSAGES_COLUMN].value.uint_value = 0; + items[MESSAGES_SHARE_COLUMN].type = TABLE_ITEM_NONE; + items[MESSAGES_SHARE_COLUMN].value.float_value = -1.0; + items[BYTES_COLUMN].type = TABLE_ITEM_UINT; + items[BYTES_COLUMN].value.uint_value = 0; + items[BYTES_SHARE_COLUMN].type = TABLE_ITEM_NONE; + items[BYTES_SHARE_COLUMN].value.float_value = -1.0; + items[FIRST_SEEN_COLUMN].type = TABLE_ITEM_NONE; + items[FIRST_SEEN_COLUMN].value.float_value = DBL_MAX; + items[LAST_SEEN_COLUMN].type = TABLE_ITEM_NONE; + items[LAST_SEEN_COLUMN].value.float_value = DBL_MIN; + items[INTERVAL_COLUMN].type = TABLE_ITEM_NONE; + items[INTERVAL_COLUMN].value.float_value = -1.0; + items[MESSAGE_RATE_COLUMN].type = TABLE_ITEM_NONE; + items[MESSAGE_RATE_COLUMN].value.float_value = -1.0; + items[BYTE_RATE_COLUMN].type = TABLE_ITEM_NONE; + items[BYTE_RATE_COLUMN].value.float_value = -1.0; + stat_tap_init_table_row(table, i, num_fields, items); + i++; + } +} + +static tap_packet_status +asap_stat_packet(void* tapdata, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* data, tap_flags_t flags _U_) +{ + stat_data_t* stat_data = (stat_data_t*)tapdata; + const asap_tap_rec_t* tap_rec = (const asap_tap_rec_t*)data; + stat_tap_table* table; + stat_tap_table_item_type* msg_data; + gint idx; + guint64 messages; + guint64 bytes; + int i = 0; + double firstSeen = -1.0; + double lastSeen = -1.0; + + idx = str_to_val_idx(tap_rec->type_string, message_type_values); + if (idx < 0) + return TAP_PACKET_DONT_REDRAW; + + table = g_array_index(stat_data->stat_tap_data->tables, stat_tap_table*, 0); + + /* Update packets counter */ + asap_total_msgs++; + msg_data = stat_tap_get_field_data(table, idx, MESSAGES_COLUMN); + msg_data->value.uint_value++; + messages = msg_data->value.uint_value; + stat_tap_set_field_data(table, idx, MESSAGES_COLUMN, msg_data); + + /* Update bytes counter */ + asap_total_bytes += tap_rec->size; + msg_data = stat_tap_get_field_data(table, idx, BYTES_COLUMN); + msg_data->value.uint_value += tap_rec->size; + bytes = msg_data->value.uint_value; + stat_tap_set_field_data(table, idx, BYTES_COLUMN, msg_data); + + /* Update messages and bytes share */ + while (message_type_values[i].strptr) { + msg_data = stat_tap_get_field_data(table, i, MESSAGES_COLUMN); + const guint m = msg_data->value.uint_value; + msg_data = stat_tap_get_field_data(table, i, BYTES_COLUMN); + const guint b = msg_data->value.uint_value; + + msg_data = stat_tap_get_field_data(table, i, MESSAGES_SHARE_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = 100.0 * m / (double)asap_total_msgs; + stat_tap_set_field_data(table, i, MESSAGES_SHARE_COLUMN, msg_data); + + msg_data = stat_tap_get_field_data(table, i, BYTES_SHARE_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = 100.0 * b / (double)asap_total_bytes; + stat_tap_set_field_data(table, i, BYTES_SHARE_COLUMN, msg_data); + i++; + } + + /* Update first seen time */ + if (pinfo->presence_flags & PINFO_HAS_TS) { + msg_data = stat_tap_get_field_data(table, idx, FIRST_SEEN_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = MIN(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts)); + firstSeen = msg_data->value.float_value; + stat_tap_set_field_data(table, idx, FIRST_SEEN_COLUMN, msg_data); + } + + /* Update last seen time */ + if (pinfo->presence_flags & PINFO_HAS_TS) { + msg_data = stat_tap_get_field_data(table, idx, LAST_SEEN_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = MAX(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts)); + lastSeen = msg_data->value.float_value; + stat_tap_set_field_data(table, idx, LAST_SEEN_COLUMN, msg_data); + } + + if ((lastSeen - firstSeen) > 0.0) { + /* Update interval */ + msg_data = stat_tap_get_field_data(table, idx, INTERVAL_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = lastSeen - firstSeen; + stat_tap_set_field_data(table, idx, INTERVAL_COLUMN, msg_data); + + /* Update message rate */ + msg_data = stat_tap_get_field_data(table, idx, MESSAGE_RATE_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = messages / (lastSeen - firstSeen); + stat_tap_set_field_data(table, idx, MESSAGE_RATE_COLUMN, msg_data); + + /* Update byte rate */ + msg_data = stat_tap_get_field_data(table, idx, BYTE_RATE_COLUMN); + msg_data->type = TABLE_ITEM_FLOAT; + msg_data->value.float_value = bytes / (lastSeen - firstSeen); + stat_tap_set_field_data(table, idx, BYTE_RATE_COLUMN, msg_data); + } + + return TAP_PACKET_REDRAW; +} + +static void +asap_stat_reset(stat_tap_table* table) +{ + guint element; + stat_tap_table_item_type* item_data; + + for (element = 0; element < table->num_elements; element++) { + item_data = stat_tap_get_field_data(table, element, MESSAGES_COLUMN); + item_data->value.uint_value = 0; + stat_tap_set_field_data(table, element, MESSAGES_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, MESSAGES_SHARE_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = -1.0; + stat_tap_set_field_data(table, element, MESSAGES_SHARE_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, BYTES_COLUMN); + item_data->value.uint_value = 0; + stat_tap_set_field_data(table, element, BYTES_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, BYTES_SHARE_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = -1.0; + stat_tap_set_field_data(table, element, BYTES_SHARE_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, FIRST_SEEN_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = DBL_MAX; + stat_tap_set_field_data(table, element, FIRST_SEEN_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, LAST_SEEN_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = DBL_MIN; + stat_tap_set_field_data(table, element, LAST_SEEN_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, INTERVAL_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = -1.0; + stat_tap_set_field_data(table, element, INTERVAL_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, MESSAGE_RATE_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = -1.0; + stat_tap_set_field_data(table, element, MESSAGE_RATE_COLUMN, item_data); + + item_data = stat_tap_get_field_data(table, element, BYTE_RATE_COLUMN); + item_data->type = TABLE_ITEM_NONE; + item_data->value.float_value = -1.0; + stat_tap_set_field_data(table, element, BYTE_RATE_COLUMN, item_data); + } + asap_total_msgs = 0; + asap_total_bytes = 0; +} + +/* 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|BASE_UNIT_STRING, &units_milliseconds, 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, + }; + + static tap_param asap_stat_params[] = { + { PARAM_FILTER, "filter", "Filter", NULL, TRUE } + }; + + static stat_tap_table_ui asap_stat_table = { + REGISTER_STAT_GROUP_RSERPOOL, + "ASAP Statistics", + "asap", + "asap,stat", + asap_stat_init, + asap_stat_packet, + asap_stat_reset, + NULL, + NULL, + sizeof(asap_stat_fields)/sizeof(stat_tap_table_item), asap_stat_fields, + sizeof(asap_stat_params)/sizeof(tap_param), asap_stat_params, + NULL, + 0 + }; + + /* 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)); + asap_tap = register_tap("asap"); + + asap_handle = register_dissector("asap", dissect_asap, proto_asap); + + register_stat_tap_table_ui(&asap_stat_table); +} + +void +proto_reg_handoff_asap(void) +{ + dissector_add_uint("sctp.ppi", ASAP_PAYLOAD_PROTOCOL_ID, asap_handle); + dissector_add_uint_with_preference("udp.port", ASAP_UDP_PORT, asap_handle); + dissector_add_uint_with_preference("tcp.port", ASAP_TCP_PORT, asap_handle); + dissector_add_uint("sctp.port", ASAP_SCTP_PORT, asap_handle); +} + +/* + * Editor modelines - https://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: + */ |