From d897eaf5cdb0c34888771bd8aa94fd494e67af3d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@open-infrastructure.net>
Date: Sat, 28 Aug 2021 06:28:53 +0200
Subject: Adding dehydrated tools.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>
---
 dehydrated/bin/dehydrated-cron     |  7 +++
 dehydrated/bin/dehydrated-hook.d   | 96 ++++++++++++++++++++++++++++++++++++++
 dehydrated/bin/dehydrated-nsupdate | 92 ++++++++++++++++++++++++++++++++++++
 3 files changed, 195 insertions(+)
 create mode 100755 dehydrated/bin/dehydrated-cron
 create mode 100755 dehydrated/bin/dehydrated-hook.d
 create mode 100755 dehydrated/bin/dehydrated-nsupdate

(limited to 'dehydrated/bin')

diff --git a/dehydrated/bin/dehydrated-cron b/dehydrated/bin/dehydrated-cron
new file mode 100755
index 0000000..09e1a44
--- /dev/null
+++ b/dehydrated/bin/dehydrated-cron
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -e
+
+mkdir -p /var/log/dehydrated
+dehydrated -gcd >> /var/log/dehydrated/dehydrated.log
+chown -R root:adm /var/log/dehydrated
diff --git a/dehydrated/bin/dehydrated-hook.d b/dehydrated/bin/dehydrated-hook.d
new file mode 100755
index 0000000..2d9a5af
--- /dev/null
+++ b/dehydrated/bin/dehydrated-hook.d
@@ -0,0 +1,96 @@
+#!/bin/sh
+
+set -e
+
+HOOKS="/etc/dehydrated/hook.d"
+
+deploy_challenge ()
+{
+	export DOMAIN="${1}" TOKEN_FILENAME="${2}" TOKEN_VALUE="${3}"
+
+	run-parts --regex '^deploy_challenge.*' "${HOOKS}"
+}
+
+clean_challenge ()
+{
+	export DOMAIN="${1}" TOKEN_FILENAME="${2}" TOKEN_VALUE="${3}"
+
+	run-parts --regex '^clean_challenge.*' "${HOOKS}"
+}
+
+sync_cert ()
+{
+	export KEYFILE="${1}" CERTFILE="${2}" FULLCHAINFILE="${3}" CHAINFILE="${4}" REQUESTFILE="${5}"
+
+	run-parts --regex '^sync_cert.*' "${HOOKS}"
+}
+
+deploy_cert ()
+{
+	export DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" FULLCHAINFILE="${4}" CHAINFILE="${5}" TIMESTAMP="${6}"
+
+	run-parts --regex '^deploy_cert.*' "${HOOKS}"
+}
+
+deploy_ocsp ()
+{
+	export DOMAIN="${1}" OCSPFILE="${2}" TIMESTAMP="${3}"
+
+	run-parts --regex '^deploy_ocsp.*' "${HOOKS}"
+}
+
+unchanged_cert ()
+{
+	export DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" FULLCHAINFILE="${4}" CHAINFILE="${5}"
+
+	run-parts --regex '^unchanged_cert.*' "${HOOKS}"
+}
+
+invalid_challenge ()
+{
+	export DOMAIN="${1}" RESPONSE="${2}"
+
+	run-parts --regex '^invalid_challenge.*' "${HOOKS}"
+}
+
+request_failure ()
+{
+	export STATUSCODE="${1}" REASON="${2}" REQTYPE="${3}" HEADERS="${4}"
+
+	run-parts --regex '^request_failure.*' "${HOOKS}"
+}
+
+generate_csr ()
+{
+	export DOMAIN="${1}" CERTDIR="${2}" ALTNAMES="${3}"
+
+	run-parts --regex '^generate_csr.*' "${HOOKS}"
+}
+
+startup_hook ()
+{
+	run-parts --regex '^startup_hook.*' "${HOOKS}"
+}
+
+exit_hook ()
+{
+	export ERROR="${1:-}"
+
+	run-parts --regex '^exit_hook.*' "${HOOKS}"
+}
+
+HANDLER="${1}"
+
+if [ -z "${HANDLER}" ]
+then
+	echo "Usage: ${0} HANDLER" >&2
+	exit 1
+fi
+
+shift
+
+case "${HANDLER}" in
+	deploy_challenge|clean_challenge|sync_cert|deploy_cert|deploy_ocsp|unchanged_cert|invalid_challenge|request_failure|generate_csr|startup_hook|exit_hook)
+		"${HANDLER}" "${@}"
+		;;
+esac
diff --git a/dehydrated/bin/dehydrated-nsupdate b/dehydrated/bin/dehydrated-nsupdate
new file mode 100755
index 0000000..f901d2e
--- /dev/null
+++ b/dehydrated/bin/dehydrated-nsupdate
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+set -e
+
+HOOK="$(basename "${0}")"
+HOOK_ACTION="$(echo "${HOOK}" | awk -F. '{ print $1 }')"
+
+# set nsupdate action
+case "${HOOK}" in
+	clean_challenge.*)
+		HOOK_ACTION="delete"
+		;;
+
+	deploy_challenge.*)
+		HOOK_ACTION="add"
+		;;
+
+	*)
+		echo "'${HOOK}': no such hook action '${HOOK_ACTION}'" >&2
+		echo "'${HOOK}': use 'clean_challenge.' or 'deploy_challenge.' as prefix in your symlink" >&2
+		exit 1
+		;;
+esac
+
+# alternatives handling for dig
+if command -v kdig > /dev/null 2>&1
+then
+	# knot-dnsutils
+	DIG="kdig"
+elif command -v dig > /dev/null 2>&1
+then
+	# bind-dnsutils
+	DIG="dig"
+else
+	echo "'${HOOK}': need dig from bind-dnsutils or knot-dnsutils" >&2
+	exit 1
+fi
+
+# alternatives handling for nsupdate
+if command -v knsupdate > /dev/null 2>&1
+then
+	# knot-dnsutils
+	NSUPDATE="knsupdate"
+elif command -v nsupdate > /dev/null 2>&1
+then
+	# bind-dnsutils
+	NSUPDATE="nsupdate"
+else
+	echo "'${HOOK}': need nsupdate from bind-dnsutils or knot-dnsutils" >&2
+	exit 1
+fi
+
+# find txt record to update
+CNAME="$(${DIG} "_acme-challenge.${DOMAIN}" 2>&1 | awk '/CNAME/ { print $5 }' | tail -n1)"
+
+if [ -n "${CNAME}" ]
+then
+	UPDATE_DOMAIN="${CNAME}"
+else
+	UPDATE_DOMAIN="_acme-challenge.${DOMAIN}"
+fi
+
+# find nameservers to update
+ZONE="${UPDATE_DOMAIN}"
+
+while true
+do
+	NAMESERVERS="$(${DIG} NS "${ZONE}" 2>&1 | awk '/NS/ { print $5 }' | tail -n1)"
+
+	if [ -n "${NAMESERVERS}" ]
+	then
+		break
+	else
+		ZONE="$(echo "${ZONE}" | cut -d '.' -f 2-)"
+	fi
+done
+
+NAMESERVERS="$(${DIG} +short NS "${ZONE}")"
+
+# update nameservers
+for NAMESERVER in ${NAMESERVERS}
+do
+	echo -n " + Adding TXT record (${UPDATE_DOMAIN})..."
+
+echo "server ${NAMESERVER}
+zone ${ZONE}
+ttl 0
+update ${HOOK_ACTION} ${UPDATE_DOMAIN} 0 TXT ${TOKEN_VALUE}
+send" | "${NSUPDATE}"
+
+	echo " done."
+done
-- 
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