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#!/bin/sh
# Copyright 2020, Ludwig V. <https://github.com/ludwig-v>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License at <http://www.gnu.org/licenses/> for
# more details.
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
DIRECTORY=$1
FIRMWARE_KEY=$2
if [[ -d $DIRECTORY ]]; then
find $DIRECTORY -type f -print0 | while read -d $'\0' FILE; do
DATA=$(head -2 $FILE | grep "smime." 2>&1)
if [[ $DATA =~ '"smime.' ]]; then
cp $FILE $FILE.bak
OPENSSL_RESULT=$(openssl smime -decrypt -in $FILE.bak -inkey $FIRMWARE_KEY 2>&1 > $FILE)
if [[ -f $FILE && $OPENSSL_RESULT == '' ]]; then
echo "${FILE} has been decrypted"
rm -rf $FILE.bak
else
mv $FILE.bak $FILE
echo "${FILE} has not been decrypted, the key is probably invalid !"
echo "Stopping"
exit 1
fi
else
echo "${FILE} seems already decrypted !"
fi
done
find $DIRECTORY -type f -print0 | while read -d $'\0' FILE; do
if [[ -f $FILE"01" ]]; then
for i in {1..9}
do
if [[ -f $FILE"0"$i ]]; then
cat $FILE"0"$i >> $FILE
rm -rf $FILE"0"$i
fi
done
echo "${FILE} parts have been merged !"
fi
done
else
echo "${DIRECTORY} not found or not a directory !"
fi
exit 0
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