Add support for proxy domain validation to tls_cert resource

site-cookbooks/kosmos-base/templates/default/gandi_dns_certbot_hook.sh.erb

@@ -1,21 +1,16 @@
 #!/usr/bin/env bash
-#
-
 set -euf -o pipefail
 
 # ************** USAGE **************
 #
-# Example usage (with this hook file saved in /root/):
+# Example usage:
 #
-#   sudo su -
 #   certbot certonly --manual --preferred-challenges dns --manual-public-ip-logging-ok --agree-tos -d "5apps.com" -d muc.5apps.com -d "xmpp.5apps.com" \
 #     --manual-auth-hook "/root/letsencrypt_hook.sh auth" --manual-cleanup-hook "/root/letsencrypt_hook.sh cleanup"
 #
-# This hook requires configuration, continue reading.
-#
 # ************** CONFIGURATION **************
 #
-# GANDI_API_KEY: Your Gandi Live API key
+# ACCESS_TOKEN: Your Gandi Live API key
 #
 # PROVIDER_UPDATE_DELAY:
 #   How many seconds to wait after updating your DNS records. This may be required,
@@ -25,10 +20,16 @@ set -euf -o pipefail
 #
 #   Defaults to 30 seconds.
 #
-GANDI_API_KEY="<%= @gandi_api_key %>"
+# VALIDATION_DOMAIN:
+#   Domain to create ACME DNS entries on. Use this when redirecting ACME subdomains
+#   from the original domain to a proxy validation domain that we control.
+#
+ACCESS_TOKEN="<%= @access_token %>"
 PROVIDER_UPDATE_DELAY=10
+VALIDATION_DOMAIN="${2:-}"
 
 regex='.*\.(.*\..*)'
+
 if [[ $CERTBOT_DOMAIN =~ $regex ]]
 then
   DOMAIN="${BASH_REMATCH[1]}"
@@ -36,25 +37,41 @@ else
   DOMAIN="${CERTBOT_DOMAIN}"
 fi
 
+if [[ -n "$VALIDATION_DOMAIN" ]]
+then
+  if [[ $VALIDATION_DOMAIN =~ $regex ]]
+  then
+    ACME_BASE_DOMAIN="${BASH_REMATCH[1]}"
+  else
+    echo "Validation domain has to be a subdomain, but it is not: \"${VALIDATION_DOMAIN}\""
+    exit 1
+  fi
+  ACME_DOMAIN="${CERTBOT_DOMAIN}.${VALIDATION_DOMAIN}"
+else
+  ACME_BASE_DOMAIN="${DOMAIN}"
+  ACME_DOMAIN="_acme-challenge.${CERTBOT_DOMAIN}"
+fi
+
 # To be invoked via Certbot's --manual-auth-hook
 function auth {
-    curl -s -D- -H "Content-Type: application/json" \
-        -H "X-Api-Key: ${GANDI_API_KEY}" \
-        -d "{\"rrset_name\": \"_acme-challenge.${CERTBOT_DOMAIN}.\",
-             \"rrset_type\": \"TXT\",
-             \"rrset_ttl\": 3600,
-             \"rrset_values\": [\"${CERTBOT_VALIDATION}\"]}" \
-        "https://dns.api.gandi.net/api/v5/domains/${DOMAIN}/records"
+  curl -s -D- \
+       -H "Content-Type: application/json" \
+       -H "Authorization: Bearer ${ACCESS_TOKEN}" \
+       -d "{\"rrset_name\": \"${ACME_DOMAIN}.\",
+            \"rrset_type\": \"TXT\",
+            \"rrset_ttl\": 300,
+            \"rrset_values\": [\"${CERTBOT_VALIDATION}\"]}" \
+       "https://api.gandi.net/v5/livedns/domains/${ACME_BASE_DOMAIN}/records"
 
-
-    sleep ${PROVIDER_UPDATE_DELAY}
+  sleep ${PROVIDER_UPDATE_DELAY}
 }
 
 # To be invoked via Certbot's --manual-cleanup-hook
 function cleanup {
-    curl -s -X DELETE -H "Content-Type: application/json" \
-        -H "X-Api-Key: ${GANDI_API_KEY}" \
-        https://dns.api.gandi.net/api/v5/domains/${DOMAIN}/records/_acme-challenge.${CERTBOT_DOMAIN}./TXT
+  curl -s -X DELETE \
+       -H "Content-Type: application/json" \
+       -H "Authorization: Bearer ${ACCESS_TOKEN}" \
+       "https://api.gandi.net/v5/livedns/domains/${ACME_BASE_DOMAIN}/records/${ACME_DOMAIN}./TXT"
 }
 
 HANDLER=$1; shift;