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#!/bin/bash
#
# Wrapper to addr2line.
#
# $0 gets a code line for a shared library. It checks where the
# library is linked to the binary and subtracts that from
# supplied list of addresses in the binary.
#
# This requires stack randomization to be disabled.
LIBNAME=libstrongswan
if [ ! -e $1 ];
then
echo "Error: file $1 not found"
exit 1
fi
if [ `cat /proc/sys/kernel/randomize_va_space` != 0 ];
then
echo "Error: stack randomization enabled: use echo 0 > /proc/sys/kernel/randomize_va_space"
exit 1
fi
LINK=`ldd $1 | grep $LIBNAME | awk '{print toupper($4) }' | sed -e "s/0X//g"`
LIB=`ldd $1 | grep $LIBNAME | awk '{print $3 }'`
until [ -z "$2" ]
do
shift
LEAK=`echo "$1" | sed -e "s/0x//g" | awk '{print toupper($1)}'`
RES=`echo "ibase=16; obase=10; $LEAK - $LINK;" | bc | sed -e "s/ //g" | awk '{print tolower($1) }'`
RES="0x$RES"
addr2line -e $LIB $RES
done
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