freetdm: ss7 - added support for NADI value in sip x-headers

libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c

@@ -82,6 +82,9 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
 
 	sngss7_chan_data_t  *sngss7_info = NULL;
 	ftdm_channel_t	  	*ftdmchan = NULL;
+	char				nadi[2];
+
+	memset(nadi, '\0', sizeof(nadi));
 
 	/* get the ftdmchan and ss7_chan_data from the circuit */
 	if (extract_chan_data(circuit, &sngss7_info, &ftdmchan)) {
@@ -212,7 +215,8 @@ ftdm_status_t handle_con_ind(uint32_t suInstId, uint32_t spInstId, uint32_t circ
 			}
 
 			/* add any special variables for the dialplan */
-			/*ftdm_channel_add_var(ftdmchan, "ss7_stuff", "s");*/
+			sprintf(nadi, "%d", siConEvnt->cgPtyNum.natAddrInd.val);
+			ftdm_channel_add_var(ftdmchan, "ss7_nadi", nadi);
 
 			/* set the state of the channel to collecting...the rest is done by the chan monitor */
 			ftdm_set_state_locked(ftdmchan, FTDM_CHANNEL_STATE_COLLECT);

libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_out.c

@@ -73,8 +73,9 @@ void ft_to_sngss7_iam (ftdm_channel_t * ftdmchan)
 {
 	SS7_FUNC_TRACE_ENTER (__FUNCTION__);
 	
-	sngss7_chan_data_t *sngss7_info = ftdmchan->call_data;;
-	SiConEvnt iam;
+	sngss7_chan_data_t	*sngss7_info = ftdmchan->call_data;;
+	const char			*nadi = NULL;
+	SiConEvnt 			iam;
 	
 	sngss7_info->suInstId 	= get_unique_id ();
 	sngss7_info->spInstId 	= 0;
@@ -179,7 +180,17 @@ void ft_to_sngss7_iam (ftdm_channel_t * ftdmchan)
 	
 	/* copy down the calling number information */
 	copy_cgPtyNum_to_sngss7 (&ftdmchan->caller_data, &iam.cgPtyNum);
-	
+
+	/* check if the user would like a custom NADI value for the calling Pty Num */
+	nadi = ftdm_channel_get_var(ftdmchan, "ss7_nadi");
+	if ((nadi != NULL) && (nadi != "")) {
+		SS7_DEBUG_CHAN(ftdmchan,"Found user supplied NADI value \"%s\"\n", nadi);
+		iam.cgPtyNum.natAddrInd.val	= atoi(nadi);
+	} else {
+		SS7_DEBUG_CHAN(ftdmchan,"No user supplied NADI value found, using \"3\" %s\n", " ");
+		iam.cgPtyNum.natAddrInd.val	= 0x03;
+	}
+
 	sng_cc_con_request (sngss7_info->spId,
 						sngss7_info->suInstId,
 						sngss7_info->spInstId,