Newer
Older
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersBYE
/**
*
* @desc setting of general and basic CANCEL header fields
* @param p_cSeq_s
*/
function f_setHeadersCANCEL(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "CANCEL"); // cseq, contact, branch, via
}// end function f_setHeadersBYE
*
* @desc function sets header field for the next outgoing REGISTER message
* @param p_cSeq_s CSeq parameter to be applied
*/
function f_setHeaders_REGISTER(inout CSeq p_cSeq_s) runs on SipComponent
{
var SemicolonParam_List v_params;
f_setHeadersGeneral(p_cSeq_s, "REGISTER"); // cseq, contact, branch, via
vc_requestUri:=
{
scheme := c_sipScheme,
userInfo := omit,
hostPort := {host:=vc_userprofile.registrarDomain, portField:=omit},
urlParameters := omit,
headers := omit
};
vc_reqHostPort := vc_requestUri.hostPort;
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_callIdReg := vc_callId; //remember callId for de-registration
vc_to := valueof(m_To(m_SipUrl_currDomain(vc_userprofile)));
v_params := {{id:=c_tagId, paramValue:=f_getRndTag()}}
vc_from := {fieldName := FROM_E,
addressField :=vc_to.addressField,
fromParams := v_params
};
if(not vc_firstREGISTER_sent)
{
v_params := {{id:=c_expiresId, paramValue:=c_shortRegistration}};
vc_contact.contactBody.contactAddresses[0].contactParams := v_params;
}
vc_firstREGISTER_sent := true;//f_setHeaders_Register is called in deREGISTER function
vc_authorization :=
{
fieldName := AUTHORIZATION_E,
body := {f_calculatecCredentials_empty(vc_userprofile)}
vc_via_REG := vc_via;
}// end function setHeaders_REGISTER
/**
*
* @desc function sets via, cseq and authorization header for the next outgoing (protected) REGISTER
function f_setHeaders_2ndREGISTER(inout CSeq p_cSeq_s) runs on SipComponent
{
var CommaParam_List v_challenge;
//Increment CSeq sequence number
p_cSeq_s.seqNumber := p_cSeq_s.seqNumber + 1;
vc_cSeq := p_cSeq_s;
vc_requestUri:=
{
scheme := c_sipScheme,
userInfo := omit,
hostPort := {host:=vc_userprofile.registrarDomain, portField:=omit},
urlParameters := omit,
headers := omit
};
//new branch tag due to different branch tag in new REGISTER method
vc_branch := c_branchCookie & f_getRndTag();
vc_via_REG :={
fieldName := VIA_E,
viaBody := {valueof(m_ViaBody_currIpaddr(vc_branch, vc_userprofile))}
};
// Extract challenge and calculate credentials for a response.
v_challenge := vc_response.msgHeader.wwwAuthenticate.challenge.digestCln;
// Prepair right answer
vc_authorization :=
{
fieldName := AUTHORIZATION_E,
body := {f_calculatecCredentials(vc_userprofile, "REGISTER", v_challenge)}
}
}// end function f_setHeaders_2ndREGISTER
/**
*
* @desc function sets via, cseq and authorization header for the next outgoing (protected) REGISTER
* NO response in Authorization header to cause an error
* @verdict
*/
function f_setHeaders_2ndREGISTER_wo_response() runs on SipComponent
{
var CommaParam_List v_challenge;
vc_branch := c_branchCookie & f_getRndTag();
vc_via_REG :={
fieldName := VIA_E,
viaBody := {valueof(m_ViaBody_currIpaddr(vc_branch, vc_userprofile))}
};
// Extract challenge and calculate credentials for a response.
v_challenge := vc_response.msgHeader.wwwAuthenticate.challenge.otherChallenge.authParams;
// Increment CSeq sequence number
vc_cSeq.seqNumber := vc_cSeq.seqNumber + 1;
// Prepair right answer
vc_authorization :=
{
fieldName := AUTHORIZATION_E,
body := {f_calculatecCredentials_wo_response(vc_userprofile, "REGISTER", v_challenge)}
}
}// end function f_setHeaders_2ndREGISTER_wo_response
/**
*
* @desc function sets via, cseq and authorization header with different private name for the next outgoing (protected) REGISTER
* @verdict
*/
function f_setHeaders_2ndREGISTER_authorizationWithDifferentUserName() runs on SipComponent
{
var CommaParam_List v_challenge;
vc_branch := c_branchCookie & f_getRndTag();
vc_requestUri:=
{
scheme := c_sipScheme,
userInfo := omit,
hostPort := {host:=vc_userprofile.registrarDomain, portField:=omit},
urlParameters := omit,
headers := omit
};
vc_via_REG :={
fieldName := VIA_E,
viaBody := {valueof(m_ViaBody_currIpaddr(vc_branch, vc_userprofile))}
};
// Extract challenge and calculate credentials for a response.
v_challenge := vc_response.msgHeader.wwwAuthenticate.challenge.otherChallenge.authParams;
// Increment CSeq sequence number
vc_cSeq.seqNumber := vc_cSeq.seqNumber + 1;
// Prepair right answer
vc_authorization :=
{
fieldName := AUTHORIZATION_E,
body := {f_calculatecCredentialsAndChangeUserName(vc_userprofile, "REGISTER", v_challenge)}
}
}// end function f_setHeaders_2ndREGISTER_authorizationWithDifferentUserName
/**
*
* @desc function sets header fields for the next outgoing REGISTER (de-registration)
* @param p_cSeq_s cSeq to be used
* @verdict
*/
function f_setHeaders_deREGISTER(inout CSeq p_cSeq_s) runs on SipComponent
{
var SemicolonParam_List v_params;
f_setHeadersGeneral(p_cSeq_s, "REGISTER"); // cseq, contact, branch, via
vc_requestUri:=
scheme := c_sipScheme,
userInfo := omit,
hostPort := {host:=vc_userprofile.registrarDomain, portField:=omit},
urlParameters := omit,
headers := omit
vc_to := valueof(m_To(m_SipUrl_currDomain(vc_userprofile)));
v_params := {{id:=c_tagId, paramValue:=f_getRndTag()}}
vc_from := {fieldName := FROM_E,
addressField :=vc_to.addressField,
fromParams := v_params
};
vc_contact :=
{
fieldName := CONTACT_E,
contactBody := {wildcard := "*" }
};
} // end function f_setHeaders_deREGISTER
/**
* @desc setting of general and basic Invite header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersINVITE(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "INVITE"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersINVITE
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/**
*
* @desc setting of general and basic Update header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersUPDATE(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "UPDATE"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersUPDATE
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/**
*
* @desc setting of general and basic Message header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersMESSAGE(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "MESSAGE"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersMESSAGE
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/**
*
* @desc setting of general and basic Notify header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersNOTIFY(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "NOTIFY"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersNOTIFY
/**
*
* @desc function sets header field for the next outgoing SUBSCRIBE message
* @param p_cSeq_s CSeq parameter to be applied
*/
function f_setHeaders_SUBSCRIBE(inout CSeq p_cSeq_s) runs on SipComponent
{
var SemicolonParam_List v_params;
f_setHeadersGeneral(p_cSeq_s, "SUBSCRIBE"); // cseq, contact, branch, via
vc_requestUri:=valueof(m_SipUrl_currDomain(vc_userprofile));
vc_reqHostPort := vc_requestUri.hostPort;
vc_callId := {
fieldName := CALL_ID_E,
callid := f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr
}
vc_to := valueof(m_To(m_SipUrl_currDomain(vc_userprofile)));
vc_cancel_To := vc_to;
v_params := {{id := c_tagId, paramValue := f_getRndTag()}};
vc_from := {
fieldName := FROM_E,
addressField := vc_to.addressField,
fromParams := v_params
}// end function setHeaders_SUBSCRIBE
/**
*
* @desc setting of general and basic Subscribe header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersSUBSCRIBE(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "SUBSCRIBE"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersMESSAGE
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/**
*
* @desc setting of general and basic REFER header fields
* in additon to the addresses (To, From, ReqUri)
* @param p_cSeq_s
*/
function f_setHeadersREFER(inout CSeq p_cSeq_s) runs on SipComponent
{
f_setHeadersGeneral(p_cSeq_s, "REFER"); // cseq, contact, branch, via
vc_callId := { fieldName:=CALL_ID_E, callid:=f_getRndCallId(p_cSeq_s) & c_AT & vc_userprofile.currIpaddr };
vc_cancel_To := vc_to;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
vc_reqHostPort := vc_requestUri.hostPort;
}// end function f_setHeadersREFER
*
* @desc This function reads all necessary headers from the received REGISTER message and generate the tag for the answer
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* @param p_Request REGISTER that has been received
*/
function f_setHeadersOnReceiptOfREGISTER(Request p_Request)
runs on SipComponent {
f_setHeadersOnReceiptOfRequest(p_Request);
vc_callId := p_Request.msgHeader.callId;
vc_caller_From := vc_from;
f_addTagInTo(vc_to);
vc_caller_To := vc_to;
vc_requestUri := p_Request.requestLine.requestUri;
vc_cancel_To := p_Request.msgHeader.toField;
if (ispresent(p_Request.msgHeader.contact)) {
vc_reqHostPort := f_getContactAddr(p_Request.msgHeader.contact.contactBody.contactAddresses[0]);
}
// update callee information and pick up tag if the call need to be canceled
vc_callee_To := {fieldName := TO_E,
addressField := vc_caller_From.addressField,
toParams := vc_caller_From.fromParams};
vc_callee_From := {fieldName := FROM_E,
addressField := vc_caller_To.addressField,
fromParams := vc_caller_To.toParams};
} // end f_setHeadersOnReceiptOfREGISTER
/**
*
* @desc This function reads all necessary headers from the received SUBSCRIBE message and generate the tag for the answer
* @param p_Request SUBSCRIBE that has been received
*/
function f_setHeadersOnReceiptOfSUBSCRIBE(Request p_Request)
runs on SipComponent {
f_setHeadersOnReceiptOfRequest(p_Request);
vc_callId := p_Request.msgHeader.callId;
vc_caller_From := vc_from;
f_addTagInTo(vc_to);
vc_caller_To := vc_to;
vc_requestUri := p_Request.requestLine.requestUri;
vc_cancel_To := p_Request.msgHeader.toField;
if (ispresent(p_Request.msgHeader.contact)) {
vc_reqHostPort := f_getContactAddr(p_Request.msgHeader.contact.contactBody.contactAddresses[0]);
}
// update callee information and pick up tag if the call need to be canceled
vc_callee_To := {fieldName := TO_E,
addressField := vc_caller_From.addressField,
toParams := vc_caller_From.fromParams};
vc_callee_From := {fieldName := FROM_E,
addressField := vc_caller_To.addressField,
fromParams := vc_caller_To.toParams};
} // end f_setHeadersOnReceiptOfSUBSCRIBE
/**
* @desc function reads all necessary headers from
* the received INVITE message and generate the tag for the answer
* @param p_Request received INVITE message
* @verdict
*/
function f_setHeadersOnReceiptOfINVITE(Request p_Request) runs on SipComponent {
f_setHeadersOnReceiptOfRequest(p_Request);
vc_callId := p_Request.msgHeader.callId;
vc_cancel_To := p_Request.msgHeader.toField;
f_addTagInTo(vc_to);
vc_caller_From := vc_from;
vc_caller_To := vc_to;
if (ispresent(p_Request.msgHeader.contact)) {
vc_reqHostPort :=
f_getContactAddr(p_Request.msgHeader.contact.contactBody.contactAddresses[0]);
vc_requestUri := f_getContactUri(p_Request.msgHeader.contact.contactBody.contactAddresses[0]);
};
// update callee information and pick up tag if the call need to be canceled
vc_callee_To := {fieldName := TO_E,
addressField := vc_caller_From.addressField,
toParams := vc_caller_From.fromParams};
vc_callee_From := {fieldName := FROM_E,
addressField := vc_caller_To.addressField,
fromParams := vc_caller_To.toParams};
if (ispresent(p_Request.msgHeader.privacy)) {
vc_privacy := p_Request.msgHeader.privacy;
};
if (ispresent(p_Request.messageBody)) {
//cleaning of attributes before assignment
if (ispresent(vc_sdp_remote.media_list))
{
var integer v_length := sizeof(vc_sdp_remote.media_list);
for (var integer i:=0; i<v_length; i:=i+1)
{
if (ispresent(vc_sdp_remote.media_list[i].attributes))
{
}
// save SDP if present
if ( ischosen(p_Request.messageBody.sdpMessageBody))
{
vc_sdp_remote := p_Request.messageBody.sdpMessageBody;
vc_sdp_remote_is_valid := true;
f_prepare_SDP_answer();
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};
// save XML if present
if ( ischosen(p_Request.messageBody.xmlBody))
{
vc_xml_remote := p_Request.messageBody.xmlBody;
}
if ( ischosen(p_Request.messageBody.mimeMessageBody))
{
for (var integer j:=0; j<sizeof(p_Request.messageBody.mimeMessageBody.mimeEncapsulatedList); j:=j+1){
if (match(p_Request.messageBody.mimeMessageBody.mimeEncapsulatedList[j].content_type,c_sdpAplication))
{
vc_sdp_remote := p_Request.messageBody.mimeMessageBody.mimeEncapsulatedList[j].mime_encapsulated_part.sdpMessageBody;
vc_sdp_remote_is_valid := true;
f_prepare_SDP_answer();
};
if (match(p_Request.messageBody.mimeMessageBody.mimeEncapsulatedList[j].content_type,c_xmlAplication))
{
vc_xml_remote := p_Request.messageBody.mimeMessageBody.mimeEncapsulatedList[j].mime_encapsulated_part.xmlBody;
};
}
}
};
if (ispresent(p_Request.msgHeader.supported.optionsTags)) {
for (var integer i := sizeof(p_Request.msgHeader.supported.optionsTags); i>0; i:=i-1)
{
if (p_Request.msgHeader.supported.optionsTags[i-1]=="100rel")
{ vc_supported_100rel := true };
if (p_Request.msgHeader.supported.optionsTags[i-1]=="precondition")
{ vc_supported_precondition := true }
}
};
} // end f_setHeadersOnReceiptOfINVITE
/**
*
* @desc function reads header field of a received BYE message
* @param p_Request received BYE
*/
function f_setHeadersOnReceiptOfBYE(Request p_BYE_Request)
runs on SipComponent
{
f_setHeadersOnReceiptOfRequest(p_BYE_Request);
vc_callId := p_BYE_Request.msgHeader.callId;
} // end f_setHeadersOnReceiptOfBYE
/**
*
* @desc function reads header field from an incoming Request message
* @param p_Request received Request message
*/
function f_setHeadersOnReceiptOfRequest(Request p_Request) runs on SipComponent {
vc_request := p_Request;
vc_callId := p_Request.msgHeader.callId;
vc_cSeq := p_Request.msgHeader.cSeq;
vc_iut_CSeq := p_Request.msgHeader.cSeq;
vc_from := p_Request.msgHeader.fromField;
vc_caller_From := p_Request.msgHeader.fromField;
vc_to := p_Request.msgHeader.toField;
vc_caller_To := p_Request.msgHeader.toField;
vc_via := p_Request.msgHeader.via;
// update sent_label according to received via header field
f_getViaReplyAddr(vc_via.viaBody, vc_sent_label);
// Catch route
vc_boo_recordRoute:=false;
//add tag field into To header if tag is not present
if (not(ispresent(p_Request.msgHeader.toField.toParams)))
{
vc_to.toParams := {{id := c_tagId, paramValue := f_getRndTag()}};
vc_caller_To := vc_to;
}
if (ispresent(p_Request.msgHeader.recordRoute))
{
vc_boo_recordRoute:=true;
vc_recordRoute := p_Request.msgHeader.recordRoute;
}
} // end f_setHeadersOnReceiptOfRequest
/**
*
* @desc functions reads header fields from an incoming Response message
* @param p_cSeq
* @param p_response received response message
* @verdict
*/
function f_setHeadersOnReceiptOfResponse(inout CSeq p_cSeq, Response p_response) runs on SipComponent
{
var integer v_i, v_j, v_nbroute;
var Contact v_contact; //only for local purpose
vc_response := p_response;
//vc_cSeq := p_cSeq; //must not save global c_seq because it can overwrite temporary cSeq
vc_to :=p_response.msgHeader.toField;
vc_from :=p_response.msgHeader.fromField;
vc_caller_To := vc_to;
vc_caller_From := vc_from;
if (ispresent(p_response.msgHeader.contact))
{
v_contact := p_response.msgHeader.contact;
if (ischosen(v_contact.contactBody.contactAddresses))
{
vc_reqHostPort := f_getContactAddr(v_contact.contactBody.contactAddresses[0]);
vc_requestUri := f_getContactUri(v_contact.contactBody.contactAddresses[0]);
}
}
else
{
if (ischosen(vc_to.addressField.nameAddr))
{
vc_reqHostPort := vc_to.addressField.nameAddr.addrSpec.hostPort;
}
else
{
vc_reqHostPort := vc_to.addressField.addrSpecUnion.hostPort;
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vc_callee_To:={fieldName := TO_E,
addressField := vc_caller_From.addressField,
toParams := vc_caller_From.fromParams};
vc_callee_From:= {fieldName := FROM_E,
addressField := vc_caller_To.addressField,
fromParams := vc_caller_To.toParams};
vc_via:= p_response.msgHeader.via;
// Route Management
if (ispresent(p_response.msgHeader.recordRoute))
{
vc_recordRoute := p_response.msgHeader.recordRoute;
v_nbroute := sizeof(vc_recordRoute.routeBody);
// copy and reverse the order of the routes in route header
for (v_i:=0; v_i<=(v_nbroute - 1); v_i:=v_i+1)
{
v_j:= v_nbroute - 1 - v_i;
vc_route.routeBody[v_j]:=vc_recordRoute.routeBody[v_i];
}
vc_route.fieldName := ROUTE_E;
vc_boo_recordRoute := true;
vc_boo_route := true;
}
else
{
vc_boo_recordRoute := false;
vc_boo_route := false;
};
// extentions due to new fields in PRACK and UPDATE messages
if (ispresent(p_response.msgHeader.rSeq)) {
vc_rAck :=
{ fieldName := RACK_E,
responseNum := valueof(p_response.msgHeader.rSeq.responseNum),
seqNumber := valueof(p_response.msgHeader.cSeq.seqNumber),
method := valueof(p_response.msgHeader.cSeq.method)
};
};
// extentions due to new HistoryInfo fields 180 or 200OK messages
if (ispresent(p_response.msgHeader.historyInfo)) {
vc_historyInfoList := valueof(p_response.msgHeader.historyInfo.historyInfoList);
vc_history_is_valid := true
}
else {vc_history_is_valid := false};
//sdpMessageBody answer
if (ispresent(p_response.messageBody)) {
if ( ischosen(p_response.messageBody.sdpMessageBody))
{
vc_sdp_remote := p_response.messageBody.sdpMessageBody;
vc_sdp_remote_is_valid := true;
}
if ( ischosen(p_response.messageBody.xmlBody))
{
vc_xml_remote := p_response.messageBody.xmlBody;
}
if ( ischosen(p_response.messageBody.mimeMessageBody))
{
for (var integer j:=0; j<sizeof(p_response.messageBody.mimeMessageBody.mimeEncapsulatedList); j:=j+1){
if (match(p_response.messageBody.mimeMessageBody.mimeEncapsulatedList[j].content_type,c_sdpAplication))
{
vc_sdp_remote := p_response.messageBody.mimeMessageBody.mimeEncapsulatedList[j].mime_encapsulated_part.sdpMessageBody;
};
if (match(p_response.messageBody.mimeMessageBody.mimeEncapsulatedList[j].content_type,c_xmlAplication))
{
vc_xml_remote := p_response.messageBody.mimeMessageBody.mimeEncapsulatedList[j].mime_encapsulated_part.xmlBody;
};
}
}
};
}// end function f_setHeadersOnReceiptOfResponse
/**
*
* @desc functions reads ServiceRoute header field from an incoming 200 Response message in registration
* @param p_cSeq
* @param p_response received response message
*/
function f_getServiceRouteMapIntoRouteInRegistration(inout CSeq p_cSeq, Response p_response) runs on SipComponent
{
var integer v_i, v_j, v_nbroute;
var ServiceRoute v_serviceRoute;
// Route Management
if (ispresent(p_response.msgHeader.serviceRoute))
{
v_serviceRoute := p_response.msgHeader.serviceRoute;
v_nbroute := sizeof(v_serviceRoute.routeBody);
// copy and reverse the order of the routes in route header
for (v_i:=0; v_i<=(v_nbroute - 1); v_i:=v_i+1)
{
v_j:= v_nbroute - 1 - v_i;
vc_route.routeBody[v_j]:=v_serviceRoute.routeBody[v_i];
}
vc_route.fieldName := ROUTE_E;
vc_route_REG := vc_route;
vc_boo_route := true;
}
}// end function f_getServiceRouteMapIntoRouteInRegistration
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/**
*
* @desc functions reads Route header field from an incoming Request message and generate RecordRoute
* @param p_cSeq
* @param p_request received request message
*/
function f_getRouteMapIntoRecordRoute(inout CSeq p_cSeq, Request p_request) runs on SipComponent
{
var integer v_i, v_j, v_nbroute;
var Route v_route;
// Route Management
if (ispresent(p_request.msgHeader.route))
{
v_route := p_request.msgHeader.route;
v_nbroute := sizeof(v_route.routeBody);
// copy and reverse the order of the routes in route header
for (v_i:=0; v_i<=(v_nbroute - 1); v_i:=v_i+1)
{
v_j:= v_nbroute - 1 - v_i;
vc_recordRoute.routeBody[v_j]:=v_route.routeBody[v_i];
}
vc_boo_recordRoute := true;
}
}// end function f_getRouteMapIntoRecordRoute
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} // end group SetHeaders
} // end group FieldOperations
group SDPOperations{
/**
* @desc check if message body include SDP attribute (2nd parameter)
* for any media
*
*/
function f_check_attribute(in SDP_Message p_sdp, in template SDP_attribute p_attribute) runs on SipComponent return boolean {
if (ispresent(p_sdp.media_list)) {
for (var integer j:=0; j<sizeof(p_sdp.media_list); j:=j+1){
if (ispresent(p_sdp.media_list[j].attributes)) {
for (var integer i:=0; i<sizeof(p_sdp.media_list[j].attributes); i:=i+1){
if (match(p_sdp.media_list[j].attributes[i],p_attribute))
{return(true);};
};
}
};
}
if (ispresent(p_sdp.attributes)) {
for (var integer j:=0; j<sizeof(p_sdp.attributes); j:=j+1){
if (match(p_sdp.attributes[j],p_attribute)) {return(true);};
};
}
return(false);
}
*
* @desc identify an SDP direction attribute (session or first media attribute) in a SDP message and return its answer value
* @param p_sdp the SDP message that has been received
* @param p_attribute incoming SDP attribute that need to be used for the SDP direction (answer)
* @return the new attribute (to be send out) derived from the incoming SDP value
function f_get_attribute_answer(in SDP_Message p_sdp, in template SDP_attribute p_attribute) runs on SipComponent return SDP_attribute {
var template SDP_attribute v_attribute := p_attribute;
// check if the selected attribute is included in the SDP offer (session attributes)
if (ispresent(p_sdp.attributes)) {
for (var integer j:=0; j<sizeof(p_sdp.attributes); j:=j+1){
if (match(p_sdp.attributes[j],p_attribute)) {v_attribute := p_sdp.attributes[j];};
};
}
// check if the selected attribute is included in the SDP offer (any of the media attributes)
if (ispresent(p_sdp.media_list)) {
for (var integer j:=0; j<sizeof(p_sdp.media_list); j:=j+1){
if (ispresent(p_sdp.media_list[j].attributes)) {
for (var integer i:=0; i<sizeof(p_sdp.media_list[j].attributes); i:=i+1){
if (match(p_sdp.media_list[j].attributes[i],p_attribute))
{v_attribute := p_sdp.media_list[j].attributes[i];};
};
}
};
}
{
case (mw_attribute_sendonly) {return(valueof(m_attribute_recvonly));}
case (mw_attribute_sendrecv) {return(valueof(m_attribute_sendrecv));}//MRO
case (mw_attribute_inactive) {return(valueof(m_attribute_inactive));}//MRO
case (mw_attribute_recvonly) {return(valueof(m_attribute_sendonly));}//MRO
}
return(valueof(m_attribute_sendrecv));//the default return value in case of missing attribute offer
}
/**
* @desc check if message body include SDP bandwidth (2nd parameter)
* either for the session or a media description
*/
function f_check_bandwidth(in SDP_Message loc_sdp, in template SDP_bandwidth loc_bandw) runs on SipComponent return boolean {
if (ispresent(loc_sdp.bandwidth)) {
for (var integer j:=0; j<sizeof(loc_sdp.bandwidth); j:=j+1){
if (match(loc_sdp.bandwidth[j],loc_bandw)) {return(true);};
};
};
if (ispresent(loc_sdp.media_list)) {
for (var integer j:=0; j<sizeof(loc_sdp.media_list); j:=j+1){
if (ispresent(loc_sdp.media_list[j].bandwidth)) {
for(var integer i:=0; i< sizeof(loc_sdp.media_list[j].bandwidth); i:=i+1) {
if (match(loc_sdp.media_list[j].bandwidth[i],loc_bandw)) {
return(true);};
}
}
};
};
return(false);
}
/**
* @desc check if message body include SDP media (2nd parameter)
*
*/
function f_check_media(in SDP_Message loc_sdp, in template SDP_media_desc loc_media) runs on SipComponent return boolean {
if (ispresent(loc_sdp.media_list)) {
for (var integer j:=0; j<sizeof(loc_sdp.media_list); j:=j+1){
if (match(loc_sdp.media_list[j].media_field.transport,loc_media.media_field.transport) and
match(loc_sdp.media_list[j].media_field.fmts,loc_media.media_field.fmts))
{return(true);};
};
}
return(false);
}
/**
* @desc
* check if message body include precondition mechanism (a=des and
* a=curr) retrun true, else false
* @param loc_sdp SDP message
*/
function f_check_precondition(in SDP_Message loc_sdp) runs on SipComponent return boolean {
if (f_check_attribute(loc_sdp, mw_attribute_des) or
f_check_attribute(loc_sdp, mw_attribute_curr))
{return(true);}
return(false);
}
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/**
* @desc check if message body include SDP media direction return true, else false
*
*/
function f_check_media_direction(in SDP_Message loc_sdp) runs on SipComponent return boolean {
if (f_check_attribute(loc_sdp, mw_attribute_sendonly) or
f_check_attribute(loc_sdp, mw_attribute_recvonly) or
f_check_attribute(loc_sdp, mw_attribute_sendrecv) or
f_check_attribute(loc_sdp, mw_attribute_inactive))
{return(true);}
return(false);
}
/**
* @desc copy media/attribute lines from remote to local SDP variable
*
*/
function f_check_SDP(integer loc_sdp, integer loc_codec) runs on SipComponent
return boolean
{
var SDP_media_desc v_media := f_prepare_media(loc_sdp,loc_codec);
log("log0");
if (vc_sdp_remote.media_list[0].media_field.media != v_media.media_field.media)
{ log("log1"); return false };
if (vc_sdp_remote.media_list[0].media_field.transport != v_media.media_field.transport)
{ log("log2"); return false };
if (vc_sdp_remote.media_list[0].media_field.fmts != v_media.media_field.fmts)
{ log("remote:",vc_sdp_remote.media_list[0].media_field.fmts,"expect:",v_media.media_field.fmts); return false };
return true
}
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/**
* @desc replace the first curr media attribute with the given value.
* @param p_sdp SDP message to modify
* @param p_curr new curr attribute
*/
function f_replace_curr_attribute(inout SDP_Message p_sdp, in SDP_attribute_curr p_curr) {
if(ispresent(p_sdp.media_list)) {
var integer mn := sizeof(p_sdp.media_list[0].attributes);
for(var integer i := 0; i<=mn; i := i+1) {
if(ischosen(p_sdp.media_list[0].attributes[i].curr)){
p_sdp.media_list[0].attributes[i].curr := p_curr;
i:=mn;
}
}
}
}
/**
* @desc append new media attribute to the first media description.
* @param p_sdp SDP message to modify
* @param p_att SDP attribute to appand
*/
function f_append_media_attribute(inout SDP_Message p_sdp, in SDP_attribute p_att) {
if(ispresent(p_sdp.media_list)) {
var integer mn := sizeof(p_sdp.media_list[0].attributes);
p_sdp.media_list[0].attributes[mn] := p_att;
}
}
/**
* @desc append new media to the existing media list in SDP
*
*/
function f_append_media(inout SDP_Message loc_SDP, in template SDP_media_desc loc_media)
{
var integer mn := sizeof(loc_SDP.media_list);
loc_SDP.media_list[mn] := valueof(loc_media);
}
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/**
* @desc repare media/attribute lines
*
*/
function f_prepare_media(integer loc_sdp, integer loc_codec) runs on SipComponent
return SDP_media_desc
{
var charstring v_codecs[32] := {
"PCMU/8000", "GSM/8000", "G723/8000", "DVI4/8000",
"DVI4/16000", "LPC/8000", "PCMA/8000", "G722/8000",
"L16/44100/2", "L16/44100", "QCELP/8000", "CN/8000",
"MPA/90000", "G728/8000", "DVI4/11025", "DVI4/22050",
"G729/8000", "G726-40/8000", "G726-32/8000", "G726-24/8000",
"G726-16/8000", "G726D/8000", "G726E/8000", "GSM-EFR/8000",
"CelB/90000", "JPEG/90000", "Nv/90000", "H261/90000",
"MPV/90000", "MP2T/90000", "H263/90000", "H263-1998/90000"
}
var SDP_media_desc v_media :=
{
media_field := {
media := "audio",
ports := {
port_number := 10000,
num_of_ports:=omit },
transport := "RTP/AVP",
fmts := { "0" }
}, //m=audio 8500 RTP/AVP 0
information := omit,