From 7e59a41e4fcbe73ef475be5f8791d386d1a84d7e Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@robotics.uk.to>
Date: Mon, 2 Nov 2015 15:30:24 +0000
Subject: [PATCH] Improved way of getting the next SIP extension

---
 src/freedombone-sipfreeext | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

diff --git a/src/freedombone-sipfreeext b/src/freedombone-sipfreeext
index f1f181e5..3196fbf9 100755
--- a/src/freedombone-sipfreeext
+++ b/src/freedombone-sipfreeext
@@ -31,27 +31,12 @@
 
 CONFIG_FILE=/etc/sipwitch.conf
 
-extensions=()
-
-# get the used extensions
-IFS=''
-for line in $(cat $CONFIG_FILE | grep "extension"); do
-    extnum=$(echo "$line" | awk -F '>' '{print $2}' | awk -F '<' '{print $1}')
-    extensions+=($extnum)
-done
-
-# find the max extension number
 maxnum=201
-for i in ${extensions[@]}; do
-    if [ $i -gt $maxnum ]; then
-        maxnum=$i
-        break
-    fi
+while (( maxnum < 299 )); do
+	if ! grep -q "extension>$maxnum<" $CONFIG_FILE; then
+		break;
+	fi
+	maxnum=$((maxnum + 1))
 done
-
-if [ $maxnum -gt 299 ]; then
-	exit 1
-fi
-
-echo $(($maxnum + 1))
+echo $maxnum
 exit 0