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|
#! /usr/bin/env sh
main()
{
# Handle opts
opts "$@"
shift "$OPTS"
unset OPTS
# Show help
[ "$OPT_HELP_ONLY" ] && usage && exit 0
# Check for dependencies
if ! which htpasswd > /dev/null 2>&1
then
printf "Missing dependency from \$PATH: %s\n" "htpasswd"
exit 1
fi
# Check where input comes from
if [ -n "$1" ]
then
input=$1
elif [ ! -t 0 ]
then
input=$(cat)
else
usage
exit 2
fi
# Generate output
htpasswd -bnBC "${OPT_COST:-10}" "" "$input" | tr -d ':\n'
printf "\n"
}
opts()
{
OPTS=0
while getopts ":c:h" opt
do
case "$opt" in
h) OPT_HELP_ONLY=1 ;;
c) OPT_COST=$OPTARG ;;
*)
printf "Invalid option passed: %s\n" "$OPTARG" >&2
;;
esac
done
unset opt
}
usage()
{
cat <<EOF
Usage:
$(basename "$0") -h
$(basename "$0") [-c <int>] <plaintext>
Generate a bcrypt hash of the input.
Options:
-c Set the cost. Defaults to 10.
-h Show this help text and exit.
EOF
}
main "$@"
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