Added ans1c from ITS (630bbb9e) · Commits · INT - Core Network and Interoperability Testing / 5G Core / NAS

ccsrc/Asn1c/asn1_recoder.cc

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		#include <asn1/asn_application.h>

		#include "asn1_recoder.hh"

		#include <TTCN3.hh>

		extern "C" {
		static int asn1c_collect_encoded_data(const void buffer, size_t size, void application_specific_key) {
		TTCN_Buffer tb = (TTCN_Buffer )application_specific_key;
		tb->put_s(size, (unsigned char *)buffer);
		return 0;
		}
		}

		int asn1_recoder::recode(const asn_TYPE_descriptor_s &td, int from, int to, TTCN_Buffer &buf) {
		int rc = -1;
		void * ptr = NULL;
		asn_dec_rval_t rc_d;
		rc_d = asn_decode(NULL, (asn_transfer_syntax)from, (asn_TYPE_descriptor_s *)&td, &ptr, buf.get_data(), buf.get_len());
		if (rc_d.code == RC_OK) {
		// Encode as PER
		asn_enc_rval_t rc_e;
		buf.clear();
		rc_e = asn_encode(NULL, (asn_transfer_syntax)to, (asn_TYPE_descriptor_s *)&td, ptr, asn1c_collect_encoded_data, &buf);
		rc = rc_e.encoded;
		}
		if (ptr) {
		ASN_STRUCT_FREE(td, ptr);
		}
		return rc;
		}

		int asn1_recoder::ber2per(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf)
		{
		//return recode(td, (int)ATS_BER, (int)ATS_UNALIGNED_CANONICAL_PER, buf);
		//return recode(td, (int)ATS_BER, (int)ATS_ALIGNED_CANONICAL_PER, buf);
		//return recode(td, (int)ATS_BER, (int)ATS_ALIGNED_BASIC_PER, buf);
		return recode(td, (int)ATS_DER, (int)ATS_UNALIGNED_BASIC_PER, buf);
		}

		int asn1_recoder::per2ber(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf)
		{
		//return recode(td, (int)ATS_ALIGNED_CANONICAL_PER, (int)ATS_BER, buf);
		//return recode(td, (int)ATS_ALIGNED_BASIC_PER, (int)ATS_BER, buf);
		return recode(td, (int)ATS_UNALIGNED_BASIC_PER, (int)ATS_DER, buf);
		}

		int asn1_recoder::ber2oer(const asn_TYPE_descriptor_s & td, TTCN_Buffer & buf)
		{
		return recode(td, (int)ATS_BER, (int)ATS_CANONICAL_OER, buf);
		}

		int asn1_recoder::oer2ber(const asn_TYPE_descriptor_s & td, TTCN_Buffer & buf)
		{
		return recode(td, (int)ATS_BASIC_OER, (int)ATS_BER, buf);
		}

ccsrc/Asn1c/asn1_recoder.hh

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		/*!
		* \file asn1_recode_per.hh
		* \brief Header file ASN.1 PER codec based on asn1c external tool.
		* \author ETSI STF525
		* \copyright ETSI Copyright Notification
		* No part may be reproduced except as authorized by written permission.
		* The copyright and the foregoing restriction extend to reproduction in all media.
		* All rights reserved.
		* \version 0.1
		*/
		#pragma once

		class OCTETSTRING; //! Forward declaration of TITAN class
		class CHARSTRING; //! Forward declaration of TITAN class
		class BITSTRING; //! Forward declaration of TITAN class
		class TTCN_Buffer; //! Forward declaration of TITAN class
		class TTCN_EncDec; //! Forward declaration of TITAN class
		class TTCN_Typedescriptor_t; //! Forward declaration of TITAN class

		struct asn_TYPE_descriptor_s; //! Forward declaration of asn1c class

		class asn1_recoder {
		protected:
		int ber2per(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf);
		int per2ber(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf);
		int ber2oer(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf);
		int oer2ber(const asn_TYPE_descriptor_s &td, TTCN_Buffer &buf);
		int recode(const asn_TYPE_descriptor_s &td, int from, int to, TTCN_Buffer &buf);
		}; // End of class asn1_recode_per

ccsrc/Asn1c/module.mk

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		sources := asn1_recoder.cc
		includes := .

ccsrc/Asn1c/oer_codec.hh

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		#pragma once

		#include "params.hh"
		#include "asn1_recoder.hh"

		class OCTETSTRING;
		class CHARSTRING;
		class BITSTRING;

		struct asn_TYPE_descriptor_s;

		template<typename TPDU> class oer_codec : public asn1_recoder
		{
		public:
		virtual int encode(const TPDU& msg, BITSTRING& bits) = 0;
		virtual int decode(const BITSTRING& bits, TPDU& msg) = 0;

		protected:
		inline int _decode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const BITSTRING& p_data, TPDU& msg) {
		TTCN_Buffer buf(bit2oct(p_data));
		TTCN_EncDec::set_error_behavior(TTCN_EncDec::ET_ALL, TTCN_EncDec::EB_WARNING);
		int rc = oer2xer (td, buf);
		if (rc > 0) {
		msg.decode(ttcn, buf, TTCN_EncDec::CT_BER, BER_ACCEPT_ALL);
		rc = buf.get_len();
		}
		return rc;
		}
		inline int _encode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const TPDU& msg, BITSTRING& p_data) {
		int rc = -1;
		TTCN_Buffer buf;
		TTCN_EncDec::set_error_behavior(TTCN_EncDec::ET_ALL, TTCN_EncDec::EB_WARNING);
		msg.encode(ttcn, buf, TTCN_EncDec::CT_BER, BER_ENCODE_DER);
		if (buf.get_len() > 0) {
		rc = xer2oer (td, buf);
		if (rc > 0) {
		p_data = oct2bit(OCTETSTRING(buf.get_len(), buf.get_data()));
		}
		}
		return rc;
		}
		};

ccsrc/Asn1c/per_codec.hh

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		/*!
		* \file per_codec.hh
		* \brief Header file for TITAN message to ASN.1 PER message codec.
		* \author ETSI STF525
		* \copyright ETSI Copyright Notification
		* No part may be reproduced except as authorized by written permission.
		* The copyright and the foregoing restriction extend to reproduction in all media.
		* All rights reserved.
		* \version 0.1
		*/
		#pragma once

		#include "params.hh"
		#include "asn1_recoder.hh"

		class BITSTRING; //! Forward declaration of TITAN class
		class TTCN_Typedescriptor_t; //! Forward declaration of TITAN class

		struct asn_TYPE_descriptor_s; //! Declare asn1c class

		/*!
		* \class per_codec
		* \brief This class provides the interface for all ASN.1 PER codecs.
		* \remark This class uses asn1c external tool
		*/
		template<typename TPDU>
		class per_codec : public asn1_recoder
		{
		public: //! \publicsection
		/*!
		* \fn int encode(const TPDU& p_message, BITSTRING& p_bitstring);
		* \brief Encode TITAN message into ASN.1 PER message
		* \param[in] p_message The PDU message to encode
		* \param[out] p_bitstring The encoded PDU message in bit string format
		* \pure
		*/
		virtual int encode(const TPDU& p_message, BITSTRING& p_bitstring) = 0;
		/*!
		* \fn int decode(const BITSTRING& p_bitstring, TPDU& p_message);
		* \brief Decode ASN.1 PER message into TITAN message
		* \param[in] p_bitstring The network message in bit string format to decode
		* \param[out] p_message The PDU message
		* \pure
		*/
		virtual int decode(const BITSTRING& p_bitstring, TPDU& p_message) = 0;

		protected: //! \protectedsection
		inline int _decode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const BITSTRING& p_data, TPDU& msg);
		inline int _encode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const TPDU& msg, BITSTRING& p_data);
		}; // End of class per_codec

		#include <TTCN3.hh>

		template<class TPDU>
		int per_codec<TPDU>::_decode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const BITSTRING& p_data, TPDU& msg) {
		TTCN_Buffer buf(bit2oct(p_data));
		TTCN_EncDec::set_error_behavior(TTCN_EncDec::ET_ALL, TTCN_EncDec::EB_WARNING);
		//int rc = per2ber (td, buf);
		//if (rc > 0) {
		msg.decode(ttcn, buf, TTCN_EncDec::CT_BER, BER_ACCEPT_ALL);
		int rc = buf.get_len();
		//}
		return rc;
		}

		template<class TPDU>
		int per_codec<TPDU>::_encode (const TTCN_Typedescriptor_t& ttcn, const asn_TYPE_descriptor_s & td, const TPDU& msg, BITSTRING& p_data) {
		int rc = 1;//-1;
		TTCN_Buffer buf;
		TTCN_EncDec::set_error_behavior(TTCN_EncDec::ET_ALL, TTCN_EncDec::EB_DEFAULT/WARNING/);
		msg.encode(ttcn, buf, TTCN_EncDec::CT_BER, BER_ENCODE_DER);
		//if (buf.get_len() > 0) {
		// rc = ber2per (td, buf);
		// if (rc > 0) {
		p_data = oct2bit(OCTETSTRING(buf.get_len(), buf.get_data()));
		rc = buf.get_len();
		// }
		//}
		return rc;
		}