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Import keys to root for backup purposes

This commit is contained in:
Bob Mottram 2014-10-02 15:21:47 +01:00
parent 93589120c9
commit 09bb9a3c7f
1 changed files with 24 additions and 6 deletions
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30
install-freedombone.sh
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@ -308,7 +308,22 @@ function create_backup_script {
apt-get -y --force-yes install duplicity gnupg
if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
fi
# make sure that the root user has access to your gpg public key
if [ $MY_GPG_PUBLIC_KEY_ID ]; then
if [ ! $MY_GPG_PUBLIC_KEY ]; then
MY_GPG_PUBLIC_KEY=/tmp/public_key.gpg
fi
# This is a compromise. backup needs access to things which the user
# doesn't have access to, but also needs to be able to encrypt as the user
# Perhaps there is some better way to do this.
su -c "gpg --output $MY_GPG_PUBLIC_KEY --armor --export $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
su -c "gpg --output ~/temp_private_key.txt --armor --export-secret-key $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
gpg --import $MY_GPG_PUBLIC_KEY
gpg --allow-secret-key-import --import /home/$MY_USERNAME/temp_private_key.txt
shred -zu /home/$MY_USERNAME/temp_private_key.txt
fi
echo '#!/bin/bash' > /usr/bin/$BACKUP_SCRIPT_NAME
@ -397,9 +412,12 @@ function create_backup_script {
echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
echo 'echo "Cleaning up backup files"' >> /usr/bin/$BACKUP_SCRIPT_NAME
echo "duplicity --force cleanup file://$USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
echo -n 'duplicity --encrypt-key $GPG_KEY --force cleanup '
echo "file://$USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
echo 'echo "Removing old backups"' >> /usr/bin/$BACKUP_SCRIPT_NAME
echo "duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
echo -n 'duplicity --encrypt-key $GPG_KEY --force remove-all-but-n-full 2 '
echo "file://$USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
echo '# Remove temporary files' >> /usr/bin/$BACKUP_SCRIPT_NAME
@ -1611,7 +1629,7 @@ function configure_gpg {
# if gpg keys directory was previously imported from usb
if [[ $GPG_KEYS_IMPORTED == "yes" && -d /home/$MY_USERNAME/.gnupg ]]; then
sed -i "s|keyserver hkp://keys.gnupg.net|keyserver $GPG_KEYSERVER|g" /home/$MY_USERNAME/.gnupg/gpg.conf
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
echo 'configure_gpg' >> $COMPLETION_FILE
return
fi
@ -1648,7 +1666,7 @@ function configure_gpg {
su -c "gpg --allow-secret-key-import --import $MY_GPG_PRIVATE_KEY" - $MY_USERNAME
# for security ensure that the private key file doesn't linger around
shred -zu $MY_GPG_PRIVATE_KEY
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
else
# Generate a GPG key
echo 'Key-Type: 1' > /home/$MY_USERNAME/gpg-genkey.conf
@ -1661,7 +1679,7 @@ function configure_gpg {
chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/gpg-genkey.conf
su -c "gpg --batch --gen-key /home/$MY_USERNAME/gpg-genkey.conf" - $MY_USERNAME
shred -zu /home/$MY_USERNAME/gpg-genkey.conf
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_USERNAME@$DOMAIN_NAME | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
MY_GPG_PUBLIC_KEY=/tmp/public_key.gpg
su -c "gpg --output $MY_GPG_PUBLIC_KEY --armor --export $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
fi