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|
#!/bin/sh
set -e
prompt_password() {
printf "Enter password: "
trap 'stty echo' INT
stty -echo
read -r PASSWORD
stty echo
printf "\n"
PASSWORD="$(echo "$PASSWORD" | shasum | awk '{print $1}')"
}
usage() {
echo "Usage: vault <new|open|close|resize> <vault>"
exit 1
}
luks_open() {
echo "$PASSWORD" | sudo cryptsetup -q -d - luksOpen "$1" "$2"
}
luks_close() {
sudo cryptsetup -q luksClose "$1"
}
random=$(tr -dc _A-Z-a-z-0-9 </dev/urandom | head -c10)
if [ "$1" = "new" ]; then
if [ -z "$2" ]; then
usage
fi
if [ -f "$2" ]; then
echo "File already exists"
exit 1
fi
touch "$2"
if [ ! -f ./"$(basename "$2")" ]; then
echo "You need to be in the same directory as the vault file"
exit 1
fi
vault="$2"
ident="$vault$random"
prompt_password
dd if=/dev/zero of="$vault" bs=1M count=32 >/dev/null 2>&1
echo "$PASSWORD" | cryptsetup -q -d - luksFormat "$vault"
luks_open "$vault" "$ident"
sudo mkfs.ext4 -Fq /dev/mapper/"$ident"
luks_close "$ident"
elif [ "$1" = "open" ]; then
if [ -z "$2" ]; then
usage
fi
base="$(basename "$2")"
if [ ! -f ./"$base" ]; then
echo "You need to be in the same directory as the vault file"
exit 1
fi
if [ -d ./"$base" ]; then
echo "There already exists a directory $base"
exit 1
fi
vault="$2"
ident="$vault$random"
newname=".$vault-$ident"
prompt_password
mv "$vault" "$newname"
luks_open "$newname" "$ident" || {
mv "$newname" "$vault"
exit 1
}
mkdir "$vault"
sudo mount /dev/mapper/"$ident" "$vault"
sudo chown "$USER" "$vault"
elif [ "$1" = "close" ]; then
if [ -z "$2" ]; then
usage
fi
base="$(basename "$2")"
if [ ! -d ./"$base/" ]; then
echo "You need to be in the same directory as the opened vault"
exit 1
fi
opened="$base"
candidates="$(find . -type f -name ".$opened-*" 2>/dev/null | cat)"
if [ "$(echo "$candidates" | wc -l)" -gt 1 ]; then
echo "Multiple vaults with the same name are opened"
exit 1
fi
vault="$candidates"
ident="$(echo "$vault" | cut -d- -f2)"
sudo umount "$opened"
luks_close "$ident"
rm -rf "$opened"
mv "$vault" "$opened"
elif [ "$1" = "resize" ]; then
if [ -z "$2" ]; then
usage
fi
if [ ! -f ./"$(basename "$2")" ]; then
echo "You need to be in the same directory as the vault file"
exit 1
fi
vault="$2"
ident="$vault$random"
cp "$vault" ".$ident.bak"
current="$(ls -lh "$vault" | awk '{print $5}')"
echo "Current: $current"
printf "Expand by: "
read -r increase
# TODO: remove requirement for qemu-img
# I tried using dd/truncate/etc but it didn't work..
qemu-img resize -q -f raw "$vault" +"$increase"
prompt_password
luks_open "$vault" "$ident" || {
mv ".$ident.bak" "$vault"
exit 1
}
echo "$PASSWORD" | sudo cryptsetup -q -d - resize /dev/mapper/"$ident"
sudo e2fsck -f /dev/mapper/"$ident" >/dev/null 2>&1
sudo resize2fs /dev/mapper/"$ident" >/dev/null 2>&1
luks_close "$ident"
rm ".$ident.bak"
else
usage
fi
|
