From 0a3ac1f5c3f1ac55ad210344a02ad79a4a9abd50 Mon Sep 17 00:00:00 2001 From: Janos Lenart Date: Fri, 25 May 2018 18:56:07 +0100 Subject: [PATCH] Added support for Google Cloud DNS API (dns_gcloud) --- README.md | 1 + dnsapi/README.md | 21 ++++++ dnsapi/dns_gcloud.sh | 167 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 189 insertions(+) create mode 100755 dnsapi/dns_gcloud.sh diff --git a/README.md b/README.md index c8bebc6f..07fbc849 100644 --- a/README.md +++ b/README.md @@ -274,6 +274,7 @@ You don't have to do anything manually! ### Currently acme.sh supports: +1. Google Cloud DNS API 1. CloudFlare.com API 1. DNSPod.cn API 1. CloudXNS.com API diff --git a/dnsapi/README.md b/dnsapi/README.md index 1f394f92..b5fff915 100644 --- a/dnsapi/README.md +++ b/dnsapi/README.md @@ -4,6 +4,27 @@ If your dns provider doesn't provide api access, you can use our dns alias mode: https://github.com/Neilpang/acme.sh/wiki/DNS-alias-mode +## 1. Use Google Cloud DNS API to automatically issue cert + +First you need to authenticate to gcloud. + +``` +gcloud init +``` + +**The `dns_gcloud` script uses the active gcloud configuration and credentials.** +There is no logic inside `dns_gcloud` to override the project and other settings. +If needed, create additional [gcloud configurations](https://cloud.google.com/sdk/gcloud/reference/topic/configurations). +You can change the configuration being used without *activating* it; simply set the `CLOUDSDK_ACTIVE_CONFIG_NAME` environment variable. + +To issue a certificate you can: +``` +export CLOUDSDK_ACTIVE_CONFIG_NAME=default # see the note above +acme.sh --issue --dns dns_gcloud -d example.com -d '*.example.com' +``` + +`dns_gcloud` also supports [DNS alias mode](https://github.com/Neilpang/acme.sh/wiki/DNS-alias-mode). + ## 1. Use CloudFlare domain API to automatically issue cert First you need to login to your CloudFlare account to get your API key. diff --git a/dnsapi/dns_gcloud.sh b/dnsapi/dns_gcloud.sh new file mode 100755 index 00000000..5fbd2b60 --- /dev/null +++ b/dnsapi/dns_gcloud.sh @@ -0,0 +1,167 @@ +#!/usr/bin/env sh + +# Author: Janos Lenart + +######## Public functions ##################### + +# Usage: dns_gcloud_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" +dns_gcloud_add() { + fulldomain=$1 + txtvalue=$2 + _info "Using gcloud" + _debug fulldomain "$fulldomain" + _debug txtvalue "$txtvalue" + + _dns_gcloud_find_zone || return $? + + # Add an extra RR + _dns_gcloud_start_tr || return $? + _dns_gcloud_get_rrdatas || return $? + echo "$rrdatas" | _dns_gcloud_remove_rrs || return $? + echo -e "$rrdatas\n\"$txtvalue\"" | grep -v '^$' | _dns_gcloud_add_rrs || return $? + _dns_gcloud_execute_tr || return $? + + _info "$fulldomain record added" +} + +# Usage: dns_gcloud_rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" +# Remove the txt record after validation. +dns_gcloud_rm() { + fulldomain=$1 + txtvalue=$2 + _info "Using gcloud" + _debug fulldomain "$fulldomain" + _debug txtvalue "$txtvalue" + + _dns_gcloud_find_zone || return $? + + # Remove one RR + _dns_gcloud_start_tr || return $? + _dns_gcloud_get_rrdatas || return $? + echo "$rrdatas" | _dns_gcloud_remove_rrs || return $? + echo "$rrdatas" | fgrep -v "\"$txtvalue\"" | _dns_gcloud_add_rrs || return $? + _dns_gcloud_execute_tr || return $? + + _info "$fulldomain record added" +} + +#################### Private functions below ################################## + +_dns_gcloud_start_tr() { + if ! trd=`mktemp -d`; then + _err "_dns_gcloud_start_tr: failed to create temporary directory" + return 1 + fi + tr="$trd/tr.yaml" + _debug tr "$tr" + + if ! gcloud dns record-sets transaction start \ + --transaction-file="$tr" \ + --zone="$managedZone"; then + rm -r "$trd" + _err "_dns_gcloud_start_tr: failed to execute transaction" + return 1 + fi +} + +_dns_gcloud_execute_tr() { + if ! gcloud dns record-sets transaction execute \ + --transaction-file="$tr" \ + --zone="$managedZone"; then + _debug tr "`cat \"$tr\"`" + rm -r "$trd" + _err "_dns_gcloud_execute_tr: failed to execute transaction" + return 1 + fi + rm -r "$trd" + + for i in `seq 1 120`; do + if gcloud dns record-sets changes list \ + --zone=lenart \ + --filter='status != done' \ + | grep -q '.*'; then + _info "_dns_gcloud_execute_tr: waiting for transaction to be comitted ..." + sleep 5 + else + return 0 + fi + done + + _err "_dns_gcloud_execute_tr: transaction is still pending after 10 minutes" + rm -r "$trd" + return 1 +} + +_dns_gcloud_remove_rrs() { + if ! xargs --no-run-if-empty gcloud dns record-sets transaction remove \ + --name="$fulldomain." \ + --ttl="$ttl" \ + --type=TXT \ + --zone="$managedZone" \ + --transaction-file="$tr"; then + _debug tr "`cat \"$tr\"`" + rm -r "$trd" + _err "_dns_gcloud_remove_rrs: failed to remove RRs" + return 1 + fi +} + +_dns_gcloud_add_rrs() { + ttl=60 + if ! xargs --no-run-if-empty gcloud dns record-sets transaction add \ + --name="$fulldomain." \ + --ttl="$ttl" \ + --type=TXT \ + --zone="$managedZone" \ + --transaction-file="$tr"; then + _debug tr "`cat \"$tr\"`" + rm -r "$trd" + _err "_dns_gcloud_add_rrs: failed to add RRs" + return 1 + fi +} + +_dns_gcloud_find_zone() { + # Prepare a filter that matches zones that are suiteable for this entry. + # For example, _acme-challenge.something.domain.com might need to go into something.domain.com or domain.com; + # this function finds the longest postfix that has a managed zone. + part="$fulldomain" + filter="dnsName=( " + while [ "$part" != "" ]; do + filter="$filter$part. " + part="`echo \"$part\" | sed 's/[^.]*\.*//'`" + done + filter="$filter)" + _debug filter "$filter" + + # List domains and find the longest match (in case of some levels of delegation) + if ! match=$(gcloud dns managed-zones list \ + --format="value(name, dnsName)" \ + --filter="$filter" \ + | while read dnsName name; do + echo -e "${#dnsName}\t$dnsName\t$name" + done \ + | sort -n -r | head -n1 | cut -f2,3 | grep '.*'); then + _err "_dns_gcloud_find_zone: Can't find a matching managed zone! Perhaps wrong project or gcloud credentials?" + return 1 + fi + + dnsName=$(echo "$match" | cut -f2) + _debug dnsName "$dnsName" + managedZone=$(echo "$match" | cut -f1) + _debug managedZone "$managedZone" +} + +_dns_gcloud_get_rrdatas() { + if ! rrdatas=$(gcloud dns record-sets list \ + --zone="$managedZone" \ + --name="$fulldomain." \ + --type=TXT \ + --format="value(ttl,rrdatas)"); then + _err "_dns_gcloud_get_rrdatas: Failed to list record-sets" + rm -r "$trd" + return 1 + fi + ttl=$(echo "$rrdatas" | cut -f1) + rrdatas=$(echo "$rrdatas" | cut -f2 | sed 's/","/"\n"/g') +}