add acme-dns plugin

README.md

@@ -318,6 +318,7 @@ You don't have to do anything manually!
 1. KingHost (https://www.kinghost.com.br/)
 1. Zilore (https://zilore.com)
 1. Loopia.se API
+1. acme-dns (https://github.com/joohoi/acme-dns)
 
 And: 
 

dnsapi/README.md

@@ -835,6 +835,22 @@ acme.sh --issue --dns dns_loopia -d example.com -d *.example.com
 ```
 
 The username and password will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+## 45. Use ACME DNS API
+
+ACME DNS is a limited DNS server with RESTful HTTP API to handle ACME DNS challenges easily and securely. 
+https://github.com/joohoi/acme-dns
+
+```
+export ACMEDNS_UPDATE_URL="https://auth.acme-dns.io/update"
+export ACMEDNS_USERNAME="<username>"
+export ACMEDNS_PASSWORD="<password>"
+export ACMEDNS_SUBDOMAIN="<subdomain>"
+
+acme.sh --issue --dns dns_acmedns -d example.com -d www.example.com
+```
+
+The credentials will be saved in `~/.acme.sh/account.conf` and will
+be reused when needed.
 
 # Use custom API
 

dnsapi/dns_acmedns.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env sh
+#
+#Author: Wolfgang Ebner
+#Report Bugs here: https://github.com/webner/acme.sh
+#
+########  Public functions #####################
+
+#Usage: dns_acmedns_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_acmedns_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using acme-dns"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  ACMEDNS_UPDATE_URL="${ACMEDNS_UPDATE_URL:-$(_readaccountconf_mutable ACMEDNS_UPDATE_URL)}"
+  ACMEDNS_USERNAME="${ACMEDNS_USERNAME:-$(_readaccountconf_mutable ACMEDNS_USERNAME)}"
+  ACMEDNS_PASSWORD="${ACMEDNS_PASSWORD:-$(_readaccountconf_mutable ACMEDNS_PASSWORD)}"
+  ACMEDNS_SUBDOMAIN="${ACMEDNS_SUBDOMAIN:-$(_readaccountconf_mutable ACMEDNS_SUBDOMAIN)}"
+
+  if [ "$ACMEDNS_UPDATE_URL" = "" ]; then
+    ACMEDNS_UPDATE_URL="https://auth.acme-dns.io/update"
+  fi
+
+  _saveaccountconf_mutable ACMEDNS_UPDATE_URL "$ACMEDNS_UPDATE_URL"
+  _saveaccountconf_mutable ACMEDNS_USERNAME "$ACMEDNS_USERNAME"
+  _saveaccountconf_mutable ACMEDNS_PASSWORD "$ACMEDNS_PASSWORD"
+  _saveaccountconf_mutable ACMEDNS_SUBDOMAIN "$ACMEDNS_SUBDOMAIN"
+
+  export _H1="X-Api-User: $ACMEDNS_USERNAME"
+  export _H2="X-Api-Key: $ACMEDNS_PASSWORD"
+  data="{\"subdomain\":\"$ACMEDNS_SUBDOMAIN\", \"txt\": \"$txtvalue\"}"
+
+  _debug data "$data"
+  response="$(_post "$data" "$ACMEDNS_UPDATE_URL" "" "POST")"
+  _debug response "$response"
+
+  if ! echo "$response" | grep "\"$txtvalue\"" >/dev/null; then
+    _err "invalid response of acme-dns"
+    return 1
+  fi
+
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_acmedns_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using acme-dns"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+}
+
+####################  Private functions below ##################################