From a5e532f49b83d4b086fcb64ef53c93d6ca476838 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Peters?= <andre.peters@debinux.de>
Date: Mon, 23 Oct 2017 12:18:29 +0200
Subject: [PATCH] Add Servercow DNS API

---
 dnsapi/dns_scow.sh | 104 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 dnsapi/dns_scow.sh

diff --git a/dnsapi/dns_scow.sh b/dnsapi/dns_scow.sh
new file mode 100644
index 00000000..5f52c66f
--- /dev/null
+++ b/dnsapi/dns_scow.sh
@@ -0,0 +1,104 @@
+
+#!/usr/bin/env bash
+
+# We highly recommend to create a new user in the Servercow CP to only grant access to the DNS API
+# https://cp.servercow.de/client/contacts/add/
+
+#SCOW_User="username"
+#SCOW_Pass="pass"
+
+dns_scow_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+  _info "Using Servercow DNS API"
+
+  if ! which dig > /dev/null; then
+    _err "Cannot find dig (Debian and derivates: dnsutils; CentOS, Arch, Alpine: bind-tools)"
+  fi
+
+  if [[ -z "$SCOW_Pass" ]] || [[ -z "$SCOW_User" ]]; then
+    SCOW_Pass=""
+    SCOW_User=""
+    _err "No Servercow login data provided."
+    _err "Please create a new user with access to the DNS API."
+    return 1
+  fi
+
+  if ! _get_root_domain "${fulldomain}"; then
+    _err "Cannot determine root domain"
+    return 1
+  fi
+  _info "Found zone ${_root_domain} for ${fulldomain}"
+
+  if _scow_api POST; then
+    _info "OK, added txt record to zone, please wait a few seconds..."
+  else
+    _err "Error, exiting."
+    return 1
+  fi
+  return 0
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_scow_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+  _get_root_domain "${fulldomain}"
+  if [[ -z ${_root_domain} ]]; then
+    _err "Cannot determine root domain"
+    return 1
+  fi
+  _info "Found zone ${_root_domain} for ${fulldomain}"
+  if _scow_api DELETE; then
+    _info "OK, removed txt record from zone."
+  else
+    _err "Error, exiting."
+    return 1
+  fi
+  return 0
+}
+
+####################  Private functions below ##################################
+_get_root_domain() {
+  local domain=${1}
+  until [[ ! -z $(dig ns ${domain} +short | grep -iE 'ns.+\.servercow\.de') ]]; do
+    domain=${domain#*.}
+    [ $(echo ${domain} | awk -F. '{print NF-1}') -lt 1 ] && return 1
+  done
+  _root_domain=${domain}
+  return 0
+}
+_scow_api() {
+  method=${1}
+  if [[ ${method} == "POST" ]]; then
+    api_return=$(curl -sX POST "https://api.servercow.de/dns/v1/domains/${_root_domain}" \
+      -H "X-Auth-Username: ${SCOW_User}" \
+      -H "X-Auth-Password: ${SCOW_Pass}" \
+      -H "Content-Type: application/json" \
+      --data "{\"type\":\"TXT\",\"name\":\"${fulldomain}\",\"content\":\"${txtvalue}\",\"ttl\":10}")
+    echo ${api_return} | grep -qi '{"message":"ok"}'
+    if [[ $? != 0 ]]; then
+      _err "Post to API failed: ${api_return}"
+      return 1
+    fi
+    _debug "API: ${api_return}"
+  elif [[ ${method} == "DELETE" ]]; then
+    api_return=$(curl -sX DELETE "https://api.servercow.de/dns/v1/domains/${_root_domain}" \
+      -H "X-Auth-Username: ${SCOW_User}" \
+      -H "X-Auth-Password: ${SCOW_Pass}" \
+      -H "Content-Type: application/json" \
+      --data "{\"type\":\"TXT\",\"name\":\"${fulldomain}\"}")
+    echo ${api_return} | grep -qi '{"message":"ok"}'
+    if [[ $? != 0 ]]; then
+      _err "Delete request to API failed: ${api_return}"
+      return 1
+    fi
+     _debug "API: ${api_return}"
+  fi
+  return 0
+}