Adding dehydrated tools.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>

10 files changed, 381 insertions, 0 deletions

diff --git a/dehydrated/Makefile b/dehydrated/Makefile
new file mode 100644
index 0000000..0c9da96
--- /dev/null
+++ b/dehydrated/Makefile
@@ -0,0 +1,118 @@
+# Open Infrastructure: service-tools
+
+# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+SHELL := sh -e
+
+SCRIPTS = bin/* share/hooks/*
+
+all: build
+
+test:
+	@echo -n "Checking for syntax errors with sh... "
+	@for SCRIPT in $(SCRIPTS); \
+	do \
+		sh -n $${SCRIPT}; \
+		echo -n "."; \
+	done
+	@echo " done."
+
+	@echo -n "Checking for bashisms... "
+	@if [ -x /usr/bin/checkbashisms ]; \
+	then \
+		for SCRIPT in $(SCRIPTS); \
+		do \
+			checkbashisms -f -x $${SCRIPT}; \
+			echo -n "."; \
+		done; \
+	else \
+		echo "Note: devscripts not installed, skipping checkbashisms."; \
+	fi
+	@echo " done."
+
+	@echo -n "Checking with shellcheck... "
+	@if [ -x /usr/bin/shellcheck ]; \
+	then \
+		for SCRIPT in $(SCRIPTS); \
+		do \
+			shellcheck -e SC2039 $${SCRIPT}; \
+			echo -n "."; \
+		done; \
+	else \
+		echo "Note: shellcheck not installed, skipping shellcheck."; \
+	fi
+	@echo " done."
+
+build:
+
+install: build
+	mkdir -p $(DESTDIR)/etc/dehydrated/hook.d
+
+	mkdir -p $(DESTDIR)/etc/cron.d
+	cp -r share/cron/* $(DESTDIR)/etc/cron.d
+
+	mkdir -p $(DESTDIR)/etc/cron.daily
+	ln -s /usr/bin/dehydrated-cron $(DESTDIR)/etc/cron.daily/dehydrated
+
+	mkdir -p $(DESTDIR)/etc/logrotate.d
+	cp -r share/logrotate/* $(DESTDIR)/etc/logrotate.d
+
+	mkdir -p $(DESTDIR)/usr/bin
+	cp -r bin/* $(DESTDIR)/usr/bin
+
+	mkdir -p $(DESTDIR)/usr/share/dehydrated/hooks
+	cp -r share/hooks/* $(DESTDIR)/usr/share/dehydrated/hooks
+
+	ln -sf /usr/bin/dehydrated-nsupdate $(DESTDIR)/usr/share/dehydrated/hooks/clean_challenge.nsupdate
+	ln -sf /usr/bin/dehydrated-nsupdate $(DESTDIR)/usr/share/dehydrated/hooks/deploy_challenge.nsupdate
+
+uninstall:
+	rm -rf $(DESTDIR)/usr/share/dehydrated/hooks
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/usr/share/dehydrated || true
+
+	for FILE in bin/*; \
+	do \
+		rm -f $(DESTDIR)/usr/bin/$$(basename $${FILE}); \
+	done
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/usr/bin || true
+
+	for FILE in share/logrotate/*; \
+	do \
+		rm -f $(DESTDIR)/etc/logrotate.d/$$(basename $${FILE}); \
+	done
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/etc/logrotate.d || true
+
+	rm -f $(DESTDIR)/etc/cron.daily/dehydrated
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/etc/cron.daily || true
+
+	for FILE in share/cron/*; \
+	do \
+		rm -f $(DESTDIR)/etc/cron.d/$$(basename $${FILE}); \
+	done
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/etc/cron.d || true
+
+	rm -rf $(DESTDIR)/etc/dehydrated/hook.d
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR)/etc/dehydrated || true
+
+	rmdir --ignore-fail-on-non-empty --parents $(DESTDIR) || true
+
+clean:
+
+distclean:
+
+reinstall: uninstall install
diff --git a/dehydrated/bin/dehydrated-cron b/dehydrated/bin/dehydrated-cron
new file mode 100755
index 0000000..09e1a44
--- /dev/null
+++ b/dehydrated/bin/dehydrated-cron
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -e
+
+mkdir -p /var/log/dehydrated
+dehydrated -gcd >> /var/log/dehydrated/dehydrated.log
+chown -R root:adm /var/log/dehydrated
diff --git a/dehydrated/bin/dehydrated-hook.d b/dehydrated/bin/dehydrated-hook.d
new file mode 100755
index 0000000..2d9a5af
--- /dev/null
+++ b/dehydrated/bin/dehydrated-hook.d
@@ -0,0 +1,96 @@
+#!/bin/sh
+
+set -e
+
+HOOKS="/etc/dehydrated/hook.d"
+
+deploy_challenge ()
+{
+	export DOMAIN="${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
diff --git a/dehydrated/share/cron/dehydrated b/dehydrated/share/cron/dehydrated
new file mode 100755
index 0000000..bece74f
--- /dev/null
+++ b/dehydrated/share/cron/dehydrated
@@ -0,0 +1,3 @@
+# /etc/cron.d/dehydrated
+
+@reboot	root	/usr/bin/dehydrated-cron
diff --git a/dehydrated/share/hooks/deploy_cert.fullchain-privkey b/dehydrated/share/hooks/deploy_cert.fullchain-privkey
new file mode 100755
index 0000000..5457036
--- /dev/null
+++ b/dehydrated/share/hooks/deploy_cert.fullchain-privkey
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -e
+
+DIRECTORY="$(dirname "${FULLCHAINFILE}")"
+FILE="cert.fullchain-privkey-${TIMESTAMP}.pem"
+
+cat "${FULLCHAINFILE}" "${KEYFILE}" > "${DIRECTORY}/${FILE}"
+ln -sf "${FILE}" "${DIRECTORY}/cert.fullchain-privkey.pem"
diff --git a/dehydrated/share/hooks/deploy_ocsp.fullchain-privkey b/dehydrated/share/hooks/deploy_ocsp.fullchain-privkey
new file mode 100755
index 0000000..e68716b
--- /dev/null
+++ b/dehydrated/share/hooks/deploy_ocsp.fullchain-privkey
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -e
+
+FILE="$(readlink "${OCSPFILE}")"
+DIRECTORY="$(dirname "${OCSPFILE}")"
+
+ln -sf "${FILE}" "${DIRECTORY}/cert.fullchain-privkey.pem.ocsp"
diff --git a/dehydrated/share/hooks/exit_hook.fix-permissions b/dehydrated/share/hooks/exit_hook.fix-permissions
new file mode 100755
index 0000000..c5bb646
--- /dev/null
+++ b/dehydrated/share/hooks/exit_hook.fix-permissions
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+echo " + Fixing permissions..."
+
+if getent group ssl-cert > /dev/null 2>&1
+then
+	echo -n "   + /var/lib/dehydrated/certs:"
+
+	find /var/lib/dehydrated/certs -type d -exec chmod 0750 {} \;
+	find /var/lib/dehydrated/certs -type f -exec chmod 0640 {} \;
+
+	# https://bugs.debian.org/854431
+	chown -R root:ssl-cert /var/lib/dehydrated/certs
+
+	echo " done."
+fi
diff --git a/dehydrated/share/hooks/exit_hook.service-reload b/dehydrated/share/hooks/exit_hook.service-reload
new file mode 100755
index 0000000..2da8c1b
--- /dev/null
+++ b/dehydrated/share/hooks/exit_hook.service-reload
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -e
+
+echo " + Reloading services..."
+
+for SERVICE in apache2 haproxy postgresql redis-server
+do
+	if service ${SERVICE} status > /dev/null 2>&1
+	then
+		echo -n "   + ${SERVICE}:"
+
+		service ${SERVICE} reload || service ${SERVICE} restart
+
+		echo " done."
+	fi
+done
diff --git a/dehydrated/share/logrotate/dehydrated b/dehydrated/share/logrotate/dehydrated
new file mode 100644
index 0000000..385a4aa
--- /dev/null
+++ b/dehydrated/share/logrotate/dehydrated
@@ -0,0 +1,13 @@
+# /etc/logrotate.d/dehydrated
+
+/var/log/dehydrated/dehydrated.log {
+	compress
+	create 0640 root adm
+	dateext
+	dateformat -%Y%m
+	dateyesterday
+	missingok
+	monthly
+	notifempty
+	rotate 12
+}