Update crt utils

1 files changed, 50 insertions, 0 deletions

diff --git a/.local/bin/crt-fetch b/.local/bin/crt-fetch
new file mode 100755
index 0000000..670669f
--- /dev/null
+++ b/.local/bin/crt-fetch
@@ -0,0 +1,50 @@
+#!/bin/sh
+
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero 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 Affero General Public License for more
+# details.
+
+main()
+{
+	# Handle opts
+	while getopts ":h" opt
+	do
+		case "$opt" in
+			h) usage && exit 0 ;;
+			*)
+				printf "Invalid option passed: %s\n" "$OPTARG" >&2
+				;;
+		esac
+	done
+
+	shift $(( OPTIND - 1 ))
+
+	# Show help
+	[ -z "$1" ] && usage && exit 1
+
+	# Perform the request to fetch the certificate, and print it on STDOUT
+	printf "%s" "" \
+		| openssl s_client -connect "$1:${2:-443}" 2> /dev/null \
+		| sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p'
+}
+
+usage()
+{
+	cat <<EOF
+Usage:
+	${0##*/} -h
+
+Nondescript
+
+Options:
+	-h  Show this help text and exit.
+EOF
+}
+
+main "$@"