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LibIms_Steps.ttcn 64.8 KiB
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Yann Garcia's avatar
Enhance SIP support, Validation LIS/Lost
Yann Garcia committed
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            f_setHeaders_SUBSCRIBE(p_cSeq_s);
            f_Subscription(p_cSeq_s, m_SUBSCRIBE_Request_UE(vc_requestUri, vc_callId, p_cSeq_s, vc_from, vc_to, vc_via, vc_contact, vc_route_REG));
        }

        //NOTE STF471 added
        /**
         * @desc Sets variables and default initialization for user profile and handle registration and authentication with MD5
         * @param p_cSeq_s The current cseq
         * @param p_register Register template
         */
        function f_IMS_preamble_withRegistrationWoSubscription(
            inout CSeq p_cSeq_s,
            out template REGISTER_Request p_register
        ) runs on ImsComponent  {
            //NOTE STF471: removed f_init_interfaceprofile(p_interface);

            // Variables & defaults initialization
            f_IMS_preamble_woRegistration(p_cSeq_s);

            // Preamble
            f_Registration(p_cSeq_s, p_register, PX_SIP_REGISTER_AUTHENTICATION_ENABLED);

            // deregistration in case of successful registration
            vc_DeregDone := false;
        }

        /**
         * @desc Sets variables and default initialization for user profile and handle registration and authentication with MD5 (basic registration template)
         * @param p_cSeq_s The current cseq
         * @param p_host P-CSCF domain name (formerly value from module parameter PX_IMS_TS_PCSCF_HOME_DOMAIN)
         * @param p_port P-CSCF port number (formerly value from module parameter PX_IMS_TS_PCSCF_PORT)
         */
        function f_IMS_preamble_withRegistrationBasic(
            inout CSeq p_cSeq_s,
            template(value) charstring p_host,
            template(value) integer p_port
        ) runs on ImsComponent  {
            //NOTE STF471: removed f_init_interfaceprofile(p_interface);
            // Variables & defaults initialization
            f_IMS_preamble_woRegistration(p_cSeq_s);

            // Preamble
            f_Registration_IMS(p_cSeq_s, PX_SIP_REGISTER_AUTHENTICATION_ENABLED, p_host, p_port);
            f_setHeaders_SUBSCRIBE(p_cSeq_s);
            f_Subscription(p_cSeq_s, m_SUBSCRIBE_Request_UE(vc_requestUri, vc_callId, p_cSeq_s, vc_from, vc_to, vc_via, vc_contact, vc_route_REG));
        }

        /**
         * @desc Sets variables and default initialization for user profile and handle registration and authentication with MD5 (basic registration template)
         * @param p_cSeq_s The current cseq
         */
        function f_IMS_preamble_AS(
            inout CSeq p_cSeq_s
        ) runs on ImsComponent  {
            // avoid deregistration in default behavior
            vc_DeregDone := true;
            vc_boo_route := true;
            vc_boo_recordRoute := true;
            vc_cSeq := p_cSeq_s;

            // Defaults
            vc_def_catchSyncStop := activate(a_Sip_catchSyncStop());
            vc_default := activate(a_altstep_AS());

            // Preamble
            //NOTE STF471: removed f_init_interfaceprofile(p_interface);
            //NOTE STF471: removed f_init_userprofile(p_userprofile); // assignment of PIXIT values to component variable
            vc_sdp_local := valueof(m_SDP_bandwidth(m_media_dynPT(PX_SIP_SDP_DYN, PX_SIP_SDP_ENCODING, PX_SIP_SDP_CLOCKRATE, omit), vc_userprofile));
            vc_contact := m_Contact(m_SipUrl_contactIpaddr(vc_userprofile));
        }

    } // end group preambles

    group postambles {

        /**
         * @desc Terminates component and handles deregistration
         * @param p_cSeq_s The current cseq
         */
        function f_IMS_postamble_withDeRegistration(
            CSeq p_cSeq_s
        ) runs on ImsComponent  {
            f_RemoveRegistration(p_cSeq_s);
            f_terminate_component();
        }

        /**
         * @desc Terminates component and optionally handles deregistration on AS as TS
         * @param p_deRegistration Handle deregistration?
         */
        function f_IMS_postamble_AS_withDeRegistration(
            boolean p_deRegistration
        ) runs on ImsComponent  {

            if (p_deRegistration == true) {
                f_awaitingREGISTER_sendReply(mw_REGISTER_Request_Base, true);
            }
            f_terminate_component();
        }

        /**
         * @desc Terminates component without registration
         */
        function f_SIP_postamble_IMS1_withoutRegistration(
        ) runs on ImsComponent  {
            f_terminate_component();
        }

        /**
         * @desc Terminates component without de-registration
         */
        function f_IMS_postamble_withoutDeRegistration(
        ) runs on ImsComponent  {
            f_terminate_component();
        }

        /**
         * @desc Terminates component with de-registration
         * @param p_to_user The selected user's SIP URL
         * @param p_qop of the peer UE (alternatively)
         */
        function f_SIP_postamble_IMS1_awaitDeRegistration(
            in SipUrl p_to_user,
            in charstring p_qop
        ) runs on ImsComponent  {
            var SipUrl v_passociated_url;
            // Awaiting 1st REGISTER
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);

            // 401 response
            f_sendResponse(m_Response_WWWauthenticate_IMS(c_statusLine401, vc_callId, vc_cSeq, vc_caller_From, vc_caller_To, vc_via, m_wwwAuthenticate(f_calculatecChallenge_forWWWAuthorization(p_qop, valueof(vc_authorization.body[0].digestResponse)))));

            // Awaiting 2nd REGISTER with authorization header
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);
            
            // 200OK to complete the request
            v_passociated_url := vc_caller_From.addressField.nameAddr.addrSpec;
            f_sendResponse(m_Response_2xxonREGISTER_IMS(c_statusLine200, vc_callId, vc_cSeq, vc_callee_From, vc_callee_To, vc_via, vc_contact, p_to_user, v_passociated_url));

            f_terminate_component();
        }

        /**
         * @desc Terminates component with de-registration
         * @param p_to_user The selected user's SIP URL
         * @param p_qop of the peer UE (alternatively)
         */
        function f_IMS_postamble_awaitDeRegistration(
            in SipUrl p_to_user,
            in charstring p_qop
        ) runs on ImsComponent  {
            var SipUrl v_passociated_url;
            // Awaiting 1st REGISTER
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);

            // 401 response
            f_sendResponse(m_Response_WWWauthenticate_IMS(c_statusLine401, vc_callId, vc_cSeq, vc_caller_From, vc_caller_To, vc_via, m_wwwAuthenticate(f_calculatecChallenge_forWWWAuthorization(p_qop, valueof(vc_authorization.body[0].digestResponse)))));

            // Awaiting 2nd REGISTER with authorization header
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);
            
            // 200OK to complete the request
            v_passociated_url := vc_caller_From.addressField.nameAddr.addrSpec;
            f_sendResponse(m_Response_2xxonREGISTER_IMS(c_statusLine200, vc_callId, vc_cSeq, vc_callee_From, vc_callee_To, vc_via, vc_contact, p_to_user, v_passociated_url));

            f_terminate_component();
        }


        /**
         * @desc Awaits de-registration
         * @param p_to_user The selected user's SIP URL
         * @param p_qop of the peer UE (alternatively)
         */
        function f_IMS_awaitDeRegistration(
            in SipUrl p_to_user,
            in charstring p_qop
        ) runs on ImsComponent  {
            var SipUrl v_passociated_url;
            // Awaiting 1st REGISTER
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);

            // 401 response
            f_sendResponse(m_Response_WWWauthenticate_IMS(c_statusLine401, vc_callId, vc_cSeq, vc_caller_From, vc_caller_To, vc_via, m_wwwAuthenticate(f_calculatecChallenge_forWWWAuthorization(p_qop, valueof(vc_authorization.body[0].digestResponse)))));

            // Awaiting 2nd REGISTER with authorization header
            f_awaitingREGISTER(mw_REGISTER_unauthorizedRequest_IMS);
            
            // 200OK to complete the request
            v_passociated_url := vc_caller_From.addressField.nameAddr.addrSpec;
            f_sendResponse(m_Response_2xxonREGISTER_IMS(c_statusLine200, vc_callId, vc_cSeq, vc_callee_From, vc_callee_To, vc_via, vc_contact, p_to_user, v_passociated_url));
        }

        //NOTE STF471: renamed f_SIP_postamble_UE(1|2)_withoutRegistration to f_SIP_postamble_UE_withoutRegistration
        /**
         * @desc Terminates component without registration
         */
        function f_SIP_postamble_UE_withoutRegistration(
        ) runs on ImsComponent  {
            f_terminate_component();
        }

        /**
         * @desc Sends BYE and awaits response (IMS)
         * @param p_requestUri The Request URI
         * @param p_callId CallId parameter for outgoing BYE
         * @param p_cSeq_s CSeq parameter for outgoing BYE
         * @param p_from From parameter for outgoing BYE
         * @param p_to To parameter for outgoing BYE
         */
        function f_terminateCall_IMS(
            SipUrl p_requestUri,
            CallId p_callId,
            inout CSeq p_cSeq_s,
            From p_from,
            template(value) To p_to
        ) runs on ImsComponent  {
            LibSip_Steps.f_setHeadersBYE(p_cSeq_s);
            // Sending of a BYE request to release the call and expect a final response
            f_SendBYE(m_BYE_Request_IMS(p_requestUri, p_callId, p_cSeq_s, p_from, p_to, vc_via, vc_route));

            tc_resp.start;
            alt {
                [] SIPP.receive(mw_Response_Base(mw_statusLine1xx, p_callId, p_cSeq_s)) {
                    repeat;
                }
                [] SIPP.receive(mw_Response_Base(mw_statusLineFinal, p_callId, p_cSeq_s)) {
                    tc_resp.stop;
                }
            // timeout should be handled in default_alt_step
            }
        } // end function f_terminateCall_IMS

        /**
         * @desc Sends BYE and awaits response (UE)
         * @param p_requestUri The Request URI
         * @param p_callId CallId parameter for outgoing BYE
         * @param p_cSeq_s CSeq parameter for outgoing BYE
         * @param p_from From parameter for outgoing BYE
         * @param p_to To parameter for outgoing BYE
         * @param p_recordRoute RecordRoute parameter for outgoing BYE - default: omit
         */
        function f_terminateCall_UE(
            SipUrl p_requestUri,
            CallId p_callId,
            inout CSeq p_cSeq_s,
            From p_from,
            template(value) To p_to,
            template RecordRoute p_recordRoute := omit
        ) runs on ImsComponent  {
            var Route v_route;
            LibSip_Steps.f_setHeadersBYE(p_cSeq_s);
            // Sending of a BYE request to release the call and expect a final response
            if (ispresent(p_recordRoute)) {
                v_route := {ROUTE_E, valueof(p_recordRoute.routeBody)};
                f_SendBYE(m_BYE_Request_UE(p_requestUri, p_callId, p_cSeq_s, p_from, valueof(p_to), vc_via, v_route));
            }
            else {
                f_SendBYE(m_BYE_Request_UE(p_requestUri, p_callId, p_cSeq_s, p_from, valueof(p_to), vc_via, vc_route));
            }

            tc_resp.start;
            alt {
                [] SIPP.receive(mw_Response_Base(mw_statusLine1xx, p_callId, p_cSeq_s)) {
                    repeat;
                }
                [] SIPP.receive(mw_Response_Base(mw_statusLineFinal, p_callId, p_cSeq_s)) {
                    tc_resp.stop;
                }
            // timeout should be handled in default_alt_step
            }
        } // end function f_terminateCall_UE

        /**
         * @desc Sends BYE and awaits response and De-registration
         * @param p_requestUri The Request URI
         * @param p_callId CallId parameter for outgoing BYE
         * @param p_cSeq_s CSeq parameter for outgoing BYE
         * @param p_from From parameter for outgoing BYE
         * @param p_to To parameter for outgoing BYE
         * @param p_qop of the peer UE (alternatively)
         */
        function f_terminateCall_UE_withDeReg(
            SipUrl p_requestUri,
            CallId p_callId,
            inout CSeq p_cSeq_s,
            From p_from,
            template(value) To p_to,
            in charstring p_qop
        ) runs on ImsComponent  {
            LibSip_Steps.f_setHeadersBYE(p_cSeq_s);
            // Sending of a BYE request to release the call and expect a final response
            f_SendBYE(m_BYE_Request_UE(p_requestUri, p_callId, p_cSeq_s, p_from, p_to, vc_via, vc_route));

            tc_resp.start;
            alt {
                [] SIPP.receive(mw_Response_Base(mw_statusLine1xx, p_callId, p_cSeq_s)) {
                    repeat;
                }
                [] SIPP.receive(mw_Response_Base(mw_statusLineFinal, p_callId, p_cSeq_s)) {
                    tc_resp.stop;
                }
            // timeout should be handled in default_alt_step
            }
            action("Please de-register");
            f_IMS_awaitDeRegistration(p_requestUri, p_qop);
        } // end function f_terminateCall_UE_withDeReg

    }
    group defaults {

        /**
         * @desc Altstep for clearing registration (IMS user)
         * @param p_to_user The selected user's SIP URL
         * @param p_qop of the peer UE (alternatively)
         * @verdict fail for all unexpected branches
         */
        altstep a_clearRegistration_IMSuser(
            in SipUrl p_to_user,
            in charstring p_qop
        ) runs on ImsComponent {
            var Response v_response;
            var Request v_request;
            var SUBSCRIBE_Request v_subscribe_request;
            var REGISTER_Request v_register_request;
            var BYE_Request v_bye_request;
            var CANCEL_Request v_cancel_request;
            var NOTIFY_Request v_notify_request;
            var INFO_Request v_info_request;
            var CSeq v_cSeq;
            [] any timer.timeout {
                log("*** " & testcasename() & ": FAIL: Timeout while waiting for message. ***");
                setverdict(fail);
                all timer.stop;
                vc_callId := vc_callIdReg;
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
            // allow repeated INVITEs
            [vc_ignore_invite] SIPP.receive(mw_INVITE_Request_Base) {
                repeat;
            }
            // allow repeated BYEs after ack of the first BYE
            [vc_ignore_bye] SIPP.receive(mw_BYE_Request_Base(?)) {
                repeat;
            }
            [] SIPP.receive(mw_ACK_Request_Base(?)) {
                repeat;
            }
            // allow 100 replies
            [] SIPP.receive(mw_Response_Base(c_statusLine100, ?, ?)) {
                repeat;
            }
            // ignore 181 if flag is set (following TS 183004 §4.5.2.1)
            [vc_ignore181] SIPP.receive(mw_Response_Base(c_statusLine181, vc_callId, vc_cSeq)) -> value v_response sender vc_sent_label {
                v_cSeq := valueof(v_response.msgHeader.cSeq);
                f_setHeadersOnReceiptOfResponse(v_response);
                repeat;
            }
            // according to SIP chap.8.1.3.2
            [] SIPP.receive(mw_Response_Base(c_statusLine183, vc_callId, vc_cSeq)) {
                repeat;
            }
            // ignore 484 if flag is set
            [vc_ignore484] SIPP.receive(mw_Response_Base(c_statusLine484, vc_callId, vc_cSeq)) {
                repeat;
            }
            [vc_ignore4xx] SIPP.receive(mw_Response_Base(mw_statusLine4xx, vc_callId, ?)) -> value v_response sender vc_sent_label {
                v_cSeq := valueof(v_response.msgHeader.cSeq);
                f_setHeadersOnReceiptOfResponse(v_response);
                f_SendACK(m_ACK_Request_route(vc_requestUri, vc_callId, v_response.msgHeader.cSeq, vc_from, vc_to, vc_via, vc_route));
                repeat;
            }
            [vc_ignore200OKinv] SIPP.receive(mw_Response_Base(c_statusLine200, vc_callId, ?)) {
                repeat;
            }
            [] SIPP.receive(mw_INFO_Request_Base(vc_callId)) -> value v_info_request sender vc_sent_label {
                f_setHeadersOnReceiptOfRequest(v_info_request);
                f_send200OK();
                repeat;
            }
            // awaiting of Notify
            [] SIPP.receive(mw_NOTIFY_Request_Base(vc_callId)) -> value v_notify_request sender vc_sent_label {
                f_setHeadersOnReceiptOfRequest(v_notify_request);
                f_send200OK();
                repeat;
            }
            // awaiting of subscribe from UE
            [vc_ignore_subscribe] SIPP.receive(mw_SUBSCRIBE_Request_Base) -> value v_subscribe_request sender vc_sent_label {
                f_setHeadersOnReceiptOfSUBSCRIBE(v_subscribe_request);
                f_send200OK();
                repeat;
            }
            // awaiting of subscribe on proxy
            [] SIPP.receive(mw_SUBSCRIBE_Request_Base) -> value v_subscribe_request sender vc_sent_label {
                f_setHeadersOnReceiptOfRequest(v_subscribe_request);
                f_sendResponse(m_Response_Contact(c_statusLine200, vc_callId, vc_cSeq, vc_callee_From, vc_callee_To, vc_via, vc_contact));
                f_SendNOTIFY(m_NOTIFY_Request_contact(v_subscribe_request.msgHeader.contact.contactBody.contactAddresses[0].addressField.nameAddr.addrSpec, vc_callId, vc_cSeq, vc_callee_From, vc_callee_To, vc_via, vc_contact));
                f_awaitingOkResponse(vc_cSeq);
                repeat;
            }
            // unexpected BYE is acknowledged to avoid retransmissions
            [] SIPP.receive(mw_BYE_Request_Base(?)) -> value v_bye_request sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected BYE message received. ***");
                setverdict(fail);
                f_setHeadersOnReceiptOfRequest(v_bye_request);
                f_send200OK();
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
            // unexpected CANCEL is acknowledged to avoid retransmissions
            [] SIPP.receive(mw_CANCEL_Request_Base(?)) -> value v_cancel_request sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected CANCEL message received. ***");
                setverdict(fail);
                f_setHeadersOnReceiptOfRequest(v_cancel_request);
                // Answer to the CANCEL
                f_send200OK();
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
            // catch 4xx response
            [] SIPP.receive(mw_Response_Base(mw_statusLine4xx, vc_callId, ?)) -> value v_response sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected 4xx response received. ***");
                setverdict(fail);
                v_cSeq := valueof(v_response.msgHeader.cSeq);
                f_setHeadersOnReceiptOfResponse(v_response);
                LibSip_Steps.f_setHeadersACK();
                f_SendACK(m_ACK_Request_route(vc_requestUri, vc_callId, v_response.msgHeader.cSeq, vc_from, vc_to, vc_via, vc_route));
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
            // catch 5xx response
            [] SIPP.receive(mw_Response_Base(mw_statusLine5xx, vc_callId, ?)) -> value v_response sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected 5xx response received. ***");
                setverdict(fail);
                v_cSeq := valueof(v_response.msgHeader.cSeq);
                f_setHeadersOnReceiptOfResponse(v_response);
                LibSip_Steps.f_setHeadersACK();
                f_SendACK(m_ACK_Request_route(vc_requestUri, vc_callId, v_response.msgHeader.cSeq, vc_from, vc_to, vc_via, vc_route));
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
            // catch invalid REGISTER
            [] SIPP.receive(mw_REGISTER_Request_Base) -> value v_register_request sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected REGISTER received. ***");
                setverdict(fail);
                f_componentStop();
            }
            // any
            [] SIPP.receive {
                log("*** " & testcasename() & ": FAIL: Unexpected message received. ***");
                setverdict(fail);
                all timer.stop;
                action("Please de-register");
                f_IMS_awaitDeRegistration(p_to_user, p_qop);
                f_componentStop();
            }
        }

        /**
         * @desc Main default altstep to handle unexpected messages and timeout
         * @verdict fail for all unexpected branches
         */
        altstep a_altstep_AS(
        ) runs on SipComponent {
            var Request v_request;
            var REGISTER_Request v_register_request;
            var BYE_Request v_bye_request;
            var CANCEL_Request v_cancel_request;
            
            [] any timer.timeout {
                log("*** " & testcasename() & ": FAIL: Timeout while waiting for message. ***");
                setverdict(fail);
                all timer.stop;
            }
            // allow repeated INVITEs
            [vc_ignore_invite] SIPP.receive(mw_INVITE_Request_Base) {
                repeat;
            }
            // handle REGISTER requests
            [] SIPP.receive(mw_REGISTER_Request_Base) -> value v_register_request sender vc_sent_label {
                f_setHeadersOnReceiptOfREGISTER(v_register_request);
                // vc_contact := vc_request.msgHeader.contact;
                f_sendResponse(m_Response_Contact(c_statusLine200, vc_callId, vc_cSeq, vc_caller_From, vc_caller_To, vc_via, vc_contact));
                repeat;
            }
            // according to SIP chap.8.1.3.2
            [] SIPP.receive(mw_Response_Base(c_statusLine183, vc_callId, vc_cSeq)) {
                repeat;
            }
            // unexpected CANCEL is acknowledged to avoid retransmissions
            [] SIPP.receive(mw_CANCEL_Request_Base(?)) -> value v_cancel_request sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected CANCEL message received. ***");
                setverdict(fail);
                f_setHeadersOnReceiptOfRequest(v_cancel_request);
                f_send200OK();
            }
            // unexpected BYE is acknowledged to avoid retransmissions
            [] SIPP.receive(mw_BYE_Request_Base(?)) -> value v_bye_request sender vc_sent_label {
                log("*** " & testcasename() & ": FAIL: Unexpected BYE message received. ***");
                setverdict(fail);
                f_setHeadersOnReceiptOfRequest(v_bye_request);
                f_send200OK();
            }
            [] SIPP.receive(mw_Response_Base(?, vc_callId, vc_cSeq)) -> value vc_response {
                log("*** " & testcasename() & ": FAIL: Unexpected response message in " & __SCOPE__ & " received. ***");
                setverdict(fail);
                repeat;
            }
            // any
            [] SIPP.receive {
                log("*** " & testcasename() & ": FAIL: Unexpected message received. ***");
                setverdict(fail);
                all timer.stop;
            }
        }
    }
} // module LibIms_Steps
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