Generate error message when AMI action originate extension doesn't exist

Review: https://reviewboard.asterisk.org/r/1445/

Is this a bug or a new feature? No responses on Asterisk-dev so I'm 
committing to trunk only.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@339206 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

@@ -40,6 +40,10 @@ CDR postgresql driver changes
 -----------------------------
  * Added command "cdr show pgsql status" to check connection status
 
+AMI (Asterisk Manager Interface) changes
+----------------------------------------
+ * Originate now generates an error response if the extension given
+   is not found in the dialplan
 
 ------------------------------------------------------------------------------
 --- Functionality changes from Asterisk 1.8 to Asterisk 10 -------------------

main/manager.c

@@ -3997,6 +3997,16 @@ static int action_originate(struct mansession *s, const struct message *m)
 		}
 	}
 
+	/* Check early if the extension exists. If not, we need to bail out here. */
+	if (exten && context && pi) {
+		if (! ast_exists_extension(NULL, context, exten, pi, l)) {
+			/* The extension does not exist. */
+			astman_send_error(s, m, "Extension does not exist.");
+			res = 0;
+			goto fast_orig_cleanup;
+		}
+	}
+
 	/* Allocate requested channel variables */
 	vars = astman_get_variables(m);