From 02abf57233c937d4bb318973a5863944ac0edde6 Mon Sep 17 00:00:00 2001
From: Matthew Fredrickson <creslin@digium.com>
Date: Thu, 31 Mar 2005 20:56:52 +0000
Subject: [PATCH] Fix callernumber IE to be read only once

git-svn-id: https://origsvn.digium.com/svn/libpri/trunk@203 2fbb986a-6c06-0410-b554-c9c1f0a7f128
---
 q931.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/q931.c b/q931.c
index 6ad5406..4107853 100755
--- a/q931.c
+++ b/q931.c
@@ -911,6 +911,12 @@ static FUNC_RECV(receive_calling_party_number)
         call->callerplan = ie->data[0] & 0x7f;
         extbit = (ie->data[0] >> 7) & 0x01;
 
+	/* Somebody's broken PRI stack sent a calling
+	 party number IE twice.  One with the callernam
+	 and one without. */
+	if (strlen(call->callernum))
+		return 0;
+
         if (extbit) {
 	  q931_get_number(call->callernum, sizeof(call->callernum), ie->data + 1, len - 3);
 	  call->callerpres = 0; /* PI presentation allowed