From d1030eb0b2939a0748cd1208442bafdc1fd39a46 Mon Sep 17 00:00:00 2001
From: mod242 <40213799+mod242@users.noreply.github.com>
Date: Wed, 24 Apr 2019 14:03:54 +0200
Subject: [PATCH] Create DDNSS API based on the work of helbgd

---
 dnsapi/dns_ddnss.sh | 133 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 dnsapi/dns_ddnss.sh

diff --git a/dnsapi/dns_ddnss.sh b/dnsapi/dns_ddnss.sh
new file mode 100644
index 00000000..f2e9947e
--- /dev/null
+++ b/dnsapi/dns_ddnss.sh
@@ -0,0 +1,133 @@
+#!/usr/bin/env sh
+
+#Created by RaidenII, to use DuckDNS's API to add/remove text records
+#06/27/201
+#modified by helbgd @ 03/13/2018 to support ddnss.de
+#modified by mod242 @ 04/24/2018 to support different ddnss domains
+#Please note: the Wildcard Feature must be turned on for the Host record
+#and the checkbox for TXT needs to be enabled
+
+
+# Pass credentials before "acme.sh --issue --dns dns_ddnss ..."
+# --
+# export DDNSS_Token="aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"
+# --
+#
+
+
+DDNSS_DNS_API="https://ddnss.de/upd.php"
+
+########  Public functions #####################
+
+#Usage: dns_ddnss_add _acme-challenge.domain.ddnss.de "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_ddnss_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  DDNSS_Token="${DDNSS_Token:-$(_readaccountconf_mutable DDNSS_Token)}"
+  if [ -z "$DDNSS_Token" ]; then
+    _err "You must export variable: DDNSS_Token"
+    _err "The token for your DDNSS account is necessary."
+    _err "You can look it up in your DDNSS account."
+    return 1
+  fi
+
+  # Now save the credentials.
+  _saveaccountconf_mutable DDNSS_Token "$DDNSS_Token"
+
+  # Unfortunately, DDNSS does not seems to support lookup domain through API
+  # So I assume your credentials (which are your domain and token) are correct
+  # If something goes wrong, we will get a KO response from DDNSS
+
+  if ! _ddnss_get_domain; then
+    return 1
+  fi
+
+  # Now add the TXT record to DDNSS DNS
+  _info "Trying to add TXT record"
+  if _ddnss_rest GET "key=$DDNSS_Token&host=$_ddnss_domain&txtm=1&txt=$txtvalue"; then
+    if [ "$response" = "Updated 1 hostname." ]; then
+      _info "TXT record has been successfully added to your DDNSS domain."
+      _info "Note that all subdomains under this domain uses the same TXT record."
+      return 0
+    else
+      _err "Errors happened during adding the TXT record, response=$response"
+      return 1
+    fi
+  else
+    _err "Errors happened during adding the TXT record."
+    return 1
+  fi
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_ddnss_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  DDNSS_Token="${DDNSS_Token:-$(_readaccountconf_mutable DDNSS_Token)}"
+  if [ -z "$DDNSS_Token" ]; then
+    _err "You must export variable: DDNSS_Token"
+    _err "The token for your DDNSS account is necessary."
+    _err "You can look it up in your DDNSS account."
+    return 1
+  fi
+
+  if ! _ddnss_get_domain; then
+    return 1
+  fi
+
+  # Now remove the TXT record from DDNS DNS
+  _info "Trying to remove TXT record"
+  if _ddnss_rest GET "key=$DDNSS_Token&host=$_ddnss_domain&txtm=1&txt=."; then
+    if [ "$response" = "Updated 1 hostname." ]; then
+      _info "TXT record has been successfully removed from your DDNSS domain."
+      return 0
+    else
+      _err "Errors happened during removing the TXT record, response=$response"
+      return 1
+    fi
+  else
+    _err "Errors happened during removing the TXT record."
+    return 1
+  fi
+}
+
+####################  Private functions below ##################################
+
+#fulldomain=_acme-challenge.domain.ddnss.de
+#returns
+# _ddnss_domain=domain
+_ddnss_get_domain() {
+
+  # We'll extract the domain/username from full domain
+  _ddnss_domain="$(echo "$fulldomain" | _lower_case | _egrep_o '[.][^.][^.]*[.](ddnss|dyn-ip24|dyndns|dyn|dyndns1|home-webserver|myhome-server|dynip)\..*' | cut -d . -f 2-)"
+
+  if [ -z "$_ddnss_domain" ]; then
+    _err "Error extracting the domain."
+    return 1
+  fi
+
+  return 0
+}
+
+#Usage: method URI
+_ddnss_rest() {
+  method=$1
+  param="$2"
+  _debug param "$param"
+  url="$DDNSS_DNS_API?$param"
+  _debug url "$url"
+
+  # DDNSS uses GET to update domain info
+  if [ "$method" = "GET" ]; then
+    response="$(_get "$url" | sed -e :a -e 's/<[^>]*>//g;/</N;//ba' |tail -n 1 )"
+  else
+    _err "Unsupported method"
+    return 1
+  fi
+
+  _debug2 response "$response"
+  return 0
+}