plugins-wimax-wimax_utils.c

Intel的WIMAX代码,主要是mac层code

		/* get the TLV value offset */
		tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
		proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "Security Negotiation Parameters Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
		/* update the offset */
		offset += tlv_value_offset;
		/* parse Security Negotiation Parameters TLVs */
		switch (tlv_type)
		{
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_PKM_VERSION_SUPPORT:
			/* add TLV subtree */
			tlv_tree = add_tlv_subtree(&tlv_info, ett_security_negotiation_parameters, tree, hf_snp_pkm_version_support, tvb, offset, tlv_len, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_pkm_version_support_bit0, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_pkm_version_support_bit1, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_pkm_version_support_reserved, tvb, offset, 1, FALSE);
		break;
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_AUTHORIZATION_POLICY_SUPPORT:
			/* add TLV subtree */
			tlv_tree = add_tlv_subtree(&tlv_info, ett_security_negotiation_parameters, tree, hf_snp_pkm_version_support, tvb, offset, tlv_len, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit0, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit1, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit2, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit3, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit4, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit5, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit6, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_auth_policy_support_bit7, tvb, offset, 1, FALSE);
		break;
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_MESSAGE_AUTHENTICATION_CODE:
			/* add TLV subtree */
			tlv_tree = add_tlv_subtree(&tlv_info, ett_security_negotiation_parameters, tree, hf_snp_mac_mode, tvb, offset, tlv_len, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit0, tvb, offset, 1, FALSE);
			if (include_cor2_changes)
			{
				proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit1_rsvd, tvb, offset, 1, FALSE);
			}
			else
			{
				proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit1, tvb, offset, 1, FALSE);
			}
			proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit2, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit3, tvb, offset, 1, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit4, tvb, offset, 1, FALSE);
			if (include_cor2_changes)
			{
				proto_tree_add_item(tlv_tree, hf_snp_mac_mode_bit5, tvb, offset, 1, FALSE);
				proto_tree_add_item(tlv_tree, hf_snp_mac_mode_reserved1, tvb, offset, 1, FALSE);
			}
			else
			{
				proto_tree_add_item(tlv_tree, hf_snp_mac_mode_reserved, tvb, offset, 1, FALSE);
			}
		break;
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_PN_WINDOW_SIZE:
			tlv_tree = add_tlv_subtree(&tlv_info, ett_security_negotiation_parameters, tree, hf_snp_pn_window_size, tvb, offset, tlv_len, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_pn_window_size, tvb, offset, tlv_len, FALSE);
		break;
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_PKM_FLOW_CONTROL:
			proto_tree_add_item(tlv_tree, hf_snp_max_conc_transactions, tvb, offset, 1, FALSE);
		break;
		case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETER_SUB_MAX_SUPPT_SECURITY_ASSNS:
			proto_tree_add_item(tlv_tree, hf_snp_max_suppt_sec_assns, tvb, offset, 1, FALSE);
		break;
		default:
			tlv_tree = add_tlv_subtree(&tlv_info, ett_security_negotiation_parameters, tree, hf_snp_unknown_type, tvb, offset, tlv_len, FALSE);
			proto_tree_add_item(tlv_tree, hf_snp_unknown_type, tvb, offset, tlv_len, FALSE);
		break;
		}
		offset += tlv_len;
	}
}

/******************************************************************/
/* wimax_cryptographic_suite_list_decoder()                       */
/* decode and display the WiMax Cryptographic Suite List           */
/* parameter:                                                     */
/*   tvb - pointer of the tvb of service flow encodings           */
/*   tree - pointer of Wireshark display tree                     */
/*   pinfo - pointer of Wireshark packet information structure    */
/******************************************************************/
void wimax_cryptographic_suite_list_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
	guint offset;
	guint tvb_len, tlv_len, tlv_value_offset;
	gint  tlv_type;
	proto_tree *tlv_tree = NULL;
	tlv_info_t tlv_info;

	/* get the tvb reported length */
	tvb_len = tvb_reported_length(tvb);
	/* do nothing if the TLV fields is not exist */
	if(!tvb_len)
		return;
	/* report error if the packet size is less than 2 bytes (type+length) */
	if(tvb_len < 2)
	{	/* invalid tlv info */
		if(pinfo->cinfo)
		{
			col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Invalid Crypto Suite List");
		}
		return;
	}
	/* process Cryptographic Suite List (11.9.15) */
	for(offset = 0; offset < tvb_len; )
	{	/* get the TLV information */
		init_tlv_info(&tlv_info, tvb, offset);
		/* get the TLV type */
		tlv_type = get_tlv_type(&tlv_info);
		/* get the TLV length */
		tlv_len = get_tlv_length(&tlv_info);
		if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
		{	/* invalid tlv info */
			if(pinfo->cinfo)
			{
				col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Crypto Suite List TLV error");
			}
			proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
			break;
		}
		/* get the TLV value offset */
		tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
		proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "Cryptographic Suite List TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
		/* update the offset for the TLV value */
		offset += tlv_value_offset;
		/* parse Cryptographic Suite List */
		switch (tlv_type)
		{
			case PKM_ATTR_CRYPTO_SUITE:
				/* add subtree */
				tlv_tree = add_tlv_subtree(&tlv_info, ett_cryptographic_suite_list_decoder, tree, hf_pkm_msg_crypto_suite, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_msb, tvb, offset, 1, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_middle, tvb, offset, 1, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_lsb, tvb, offset, 1, FALSE);
			break;
			default:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_cryptographic_suite_list_decoder, tree, hf_pkm_msg_unknown_type, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_unknown_type, tvb, offset, tlv_len, FALSE);
			break;
		}
		offset += tlv_len;
	}	/* end of TLV process while loop */
}

/******************************************************************/
/* wimax_pkm_tlv_encoded_attributes_decoder()                     */
/* decode and display the WiMax PKM message TLV Encoded Attributes*/
/* parameter:                                                     */
/*   tvb - pointer of the tvb of service flow encodings           */
/*   tree - pointer of Wireshark display tree                     */
/*   pinfo - pointer of Wireshark packet information structure    */
/******************************************************************/
void wimax_pkm_tlv_encoded_attributes_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
	guint offset;
	guint tvb_len, tlv_len, tlv_value_offset;
	gint  tlv_type;
	proto_tree *tlv_tree = NULL;
	tlv_info_t tlv_info;

	/* get the tvb reported length */
	tvb_len = tvb_reported_length(tvb);
	/* do nothing if the TLV fields is not exist */
	if(!tvb_len)
		return;
	/* report error if the packet size is less than 2 bytes (type+length) */
	if(tvb_len < 2)
	{	/* invalid tlv info */
		if(pinfo->cinfo)
		{
			col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Invalid PKM TLV");
		}
		return;
	}
	/* process PKM message TLV Encoded Attributes (11.9) */
	for(offset = 0; offset < tvb_len; )
	{
		/* get the TLV information */
		init_tlv_info(&tlv_info, tvb, offset);
		/* get the TLV type */
		tlv_type = get_tlv_type(&tlv_info);
		/* get the TLV length */
		tlv_len = get_tlv_length(&tlv_info);
		if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
		{	/* invalid tlv info */
			if(pinfo->cinfo)
			{
				col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "PKM TLV error");
			}
			proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
			break;
		}
		/* get the TLV value offset */
		tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
		proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "PKM TLV Encoded Attributes TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
		/* update the offset for the TLV value */
		offset += tlv_value_offset;
		/* parse PKM TLV Encoded Attributes (table 370) */
		switch (tlv_type)
		{
			case PKM_ATTR_DISPLAY_STRING:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_display, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_display, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_AUTH_KEY:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_auth_key, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_auth_key, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_TEK:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_tek, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_tek, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_KEY_LIFE_TIME:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_key_life_time, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_key_life_time, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_KEY_SEQ_NUM:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_key_seq_num, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_key_seq_num, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_HMAC_DIGEST:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_hmac_digest, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_hmac_digest, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_SAID:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_said, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_said, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_TEK_PARAM:
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "TEK Parameters (%u bytes)", tlv_len);
				/* add subtree */
				wimax_tek_parameters_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
			case PKM_ATTR_CBC_IV:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_cbc_iv, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_cbc_iv, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_ERROR_CODE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_error_code, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_error_code, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_CA_CERTIFICATE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_ca_certificate, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_ca_certificate, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_SS_CERTIFICATE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_attr_ss_certificate, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_attr_ss_certificate, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_SECURITY_CAPABILITIES:
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Security Capabilities (%u bytes)", tlv_len);
				/* add subtree */
				wimax_security_capabilities_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
			case PKM_ATTR_CRYPTO_SUITE:
				/* add subtree */
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_msg_crypto_suite, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_msb, tvb, offset, 1, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_middle, tvb, offset, 1, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_lsb, tvb, offset, 1, FALSE);
			break;
			case PKM_ATTR_CRYPTO_LIST:
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Cryptographic-Suite List (%u bytes)", tlv_len);
				/* add subtree */
				wimax_cryptographic_suite_list_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
#if 0 /* rserved by IEE 802.16E */
			case PKM_ATTR_VERSION:
				proto_tree_add_item(tree, hf_pkm_msg_version, tvb, offset, tlv_len, FALSE);
			break;
#endif
			case PKM_ATTR_SA_DESCRIPTOR:
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "SA-Descriptor (%u bytes)", tlv_len);
				/* add subtree */
				wimax_sa_descriptor_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
			case PKM_ATTR_SA_TYPE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_sa_type, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_sa_type, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_SECURITY_NEGOTIATION_PARAMETERS:
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Security Negotiation Parameters (%u bytes)", tlv_len);
				/* add subtree */
				wimax_security_negotiation_parameters_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
			case PKM_ATTR_PKM_CONFIG_SETTINGS:
				/* add subtree */
				tlv_tree = add_protocol_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "PKM Configuration Settings (%u bytes)", tlv_len);
				wimax_pkm_configuration_settings_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
			break;
			case PKM_ATTR_PKM_EAP_PAYLOAD:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_attr_eap_payload, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_attr_eap_payload, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_PKM_NONCE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_attr_nonce, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_attr_nonce, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_AUTH_RESULT_CODE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_attr_auth_result_code, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_attr_auth_result_code, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_SA_SERVICE_TYPE:
				tlv_tree = add_tlv_subtree(&tlv_info, ett_pkm_tlv_encoded_attributes_decoder, tree, hf_pkm_attr_sa_service_type, tvb, offset, tlv_len, FALSE);
				proto_tree_add_item(tlv_tree, hf_pkm_attr_sa_service_type, tvb, offset, tlv_len, FALSE);
			break;
			case PKM_ATTR_FRAME_NUMBER: