Add bcrypt utility

1 files changed, 71 insertions, 0 deletions

diff --git a/.local/bin/bcrypt b/.local/bin/bcrypt
new file mode 100755
index 0000000..11151ac
--- /dev/null
+++ b/.local/bin/bcrypt
@@ -0,0 +1,71 @@
+#! /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" "nigga"
+		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 "$0") [-c <int>] <plaintext>
+
+Generate a bcrypt hash of the input.
+
+Options:
+	-c  Set the cost. Defaults to 10.
+	-h  Show this help text and exit.
+EOF
+}
+
+main "$@"