Added variable DISCONNECT_IND_REASON when DISCONNECT_IND is received.

CHANGES

@@ -10,6 +10,7 @@ HEAD
 - Fixed memory leak in chat_play if using with 's' option
 - Add 'econtransitconn' configurations parameter. Allows to preserve
   EC for transit connections
+- added variable DISCONNECT_IND_REASON to get real reason code from CAPI
 
 chan_capi-1.1.5
 ------------------

README

@@ -530,6 +530,13 @@ CONNECTEDNUMBER
     Can be set before answering and if set, the content is used for
     IE 'Connected Number' on answering.
 
+DISCONNECT_IND_REASON
+    When CAPI reports DISCONNECT_IND, some CAPI reason codes are not set
+    in HANGUPCAUSE, because they are not valid cause codes. To also
+    get those CAPI reason codes, you can check this variable on hangup.
+    This is e.g. useful for reason 0x3301, which tells that the ISDN
+	connection is physically broken (cable).
+
 FAXEXTEN
     If chan_capi sends the call to extensions 'fax', the original extension number
     is saved in this variable.

chan_capi.c

@@ -4698,6 +4698,7 @@ static void capidev_handle_disconnect_indication(_cmsg *CMSG, unsigned int PLCI,
 {
 	struct ast_frame fr = { AST_FRAME_CONTROL, };
 	int state;
+	char buffer[CAPI_MAX_STRING];
 
 	FRAME_SUBCLASS_INTEGER(fr.subclass) = AST_CONTROL_HANGUP;
 
@@ -4717,13 +4718,18 @@ static void capidev_handle_disconnect_indication(_cmsg *CMSG, unsigned int PLCI,
 
 	i->reason = DISCONNECT_IND_REASON(CMSG);
 
-	if ((i->owner) && (i->owner->hangupcause == 0)) {
-		/* set hangupcause, in case there is no 
-		 * "cause" information element:
-		 */
-		i->owner->hangupcause =
-			((i->reason & 0xFF00) == 0x3400) ?
-			i->reason & 0x7F : AST_CAUSE_NORMAL_CLEARING;
+	if (i->owner) {
+		if (i->owner->hangupcause == 0) {
+			/* set hangupcause, in case there is no 
+			 * "cause" information element:
+			 */
+			i->owner->hangupcause =
+				((i->reason & 0xFF00) == 0x3400) ?
+				i->reason & 0x7F : AST_CAUSE_NORMAL_CLEARING;
+		}
+		/* the real reason could be != 0x34xx, so provide this value in variable */
+		sprintf(buffer, "%d", i->reason);
+		pbx_builtin_setvar_helper(i->owner, "DISCONNECT_IND_REASON", buffer);
 	}
 
 	if (i->FaxState & CAPI_FAX_STATE_ACTIVE) {