#!/bin/sh
#Lookup phone number via Domino LDAP and return name for callerid
#v.3

#Configurable variables
ldaphostname="" #enter ldap server name
ldapusername="" #enter username
ldappassword="" #enter password
tempfile=/tmp/file.txt

#process incoming variables from Asterisk AGI
declare -a array
while read -e ARG && [ "$ARG" ] ; do
        array=(` echo $ARG | sed -e 's/://'`)
        #echo $ARG >> $tempfile
        export ${array[0]}=${array[1]}
done

num=$agi_callerid
len=${#num}

#Check for number of digits in callerid
#I think from Asterisk it should always be 10.
#However script will handle it if it passes 12 in the following format
#xxx-xxx-xxxx
if [ $len -eq 10 ]
then
  #We have a 10 digit callerid.  Add 2 dashes for the 12 digit version
  num10=$num
  num12=${num:0:3}-${num:3:3}-${num:6:4}
elif [ $len -eq 12 ]; then
  #We have a 12 digit callerid.  Remove 2 dashes for 10 digit version
  num10=${num:0:3}${num:4:3}${num:8:4}
  num12=$num  
else
  #If callerid is not 10 or 12 digits do not attempt a lookup and exit script.
  exit 0;
fi

#build LDAP search filter
searchstr="(|(mobile=$num10)(mobile=$num12)(phonenumber=$num10)(phonenumber=$num12)(telephonenumber=$num10)(telephonenumber=$num12))"

#perform ldap search
/usr/bin/ldapsearch -h $ldaphostname -D "$ldapusername" -w "$ldappassword" -x -LLL "$searchstr" givenname sn >> $tempfile
#Currently the script writes the output to a file, greps the file and deletes it
#I would like to change this to keeping it in a variable
#I currently don't know how to keep multi-line text in variable without losing caridge returns

#parse out last name and first name
lastname=`grep sn $tempfile | cut -d ":" -f 2 | sed 's/^ //'` 
firstname=`grep givenname $tempfile | cut -d ":" -f 2 | sed 's/^ //'`
rm $tempfile

#check that lastname is more than 1 char long
#if true, then exit so we don't override callerid
if [ ${#lastname} -lt 2 ]
then
  exit 0;
fi

CIDNAME="$lastname, $firstname"
#return new callerid to Asterisk
echo "SET CALLERID \"$CIDNAME\"<$agi_callerid>"

exit 0;