From 0f54cf83f4f24f037e1adf52be37c9e809df4825 Mon Sep 17 00:00:00 2001
From: StefanAbl <thorn.st57@gmail.com>
Date: Sat, 18 Jan 2020 13:48:29 +0100
Subject: [PATCH] fixed dynv6 dns validation

---
 dnsapi/dns_dynv6.sh | 125 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 dnsapi/dns_dynv6.sh

diff --git a/dnsapi/dns_dynv6.sh b/dnsapi/dns_dynv6.sh
new file mode 100644
index 00000000..b1fa7650
--- /dev/null
+++ b/dnsapi/dns_dynv6.sh
@@ -0,0 +1,125 @@
+#!/usr/bin/env sh
+#Author StefanAbl
+#Usage specify a private keyfile to use with dynv6 'export KEY="path/to/keyfile"'
+#if no keyfile is specified, you will be asked if you want to create one in /home/$USER/.ssh/dynv6 and /home/$USER/.ssh/dynv6.pub
+########  Public functions #####################
+# Please Read this guide first: https://github.com/Neilpang/acme.sh/wiki/DNS-API-Dev-Guide
+#Usage: dns_myapi_add  _acme-challenge.www.domain.com  "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dynv6_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using dynv6 api"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+  _get_keyfile
+  
+  _info "using keyfile $dynv6_keyfile"
+  _get_domain "$fulldomain"
+  _your_hosts="$(ssh -i "$dynv6_keyfile" api@dynv6.com hosts)"
+  if ! _contains "$_your_hosts" "$_host"; then
+    _debug "The host is $_host and the record $_record"
+    _debug "Dynv6 returned $_your_hosts"
+    _err "The host $_host does not exists on your dynv6 account"
+    return 1
+  fi
+  _debug "found host on your account"
+  returnval="$(ssh -i "$dynv6_keyfile" api@dynv6.com hosts \""$_host"\" records set \""$_record"\" txt data \""$txtvalue"\")"
+  _debug "Dynv6 returend this after record was added: $returnval"
+  if _contains "$returnval" "created"; then
+    return 0
+  elif _contains "$returnval" "updated"; then
+    return 0
+  else
+    _err "Something went wrong! it does not seem like the record was added succesfully"
+    return 1
+  fi
+  return 1
+}
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_dynv6_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using dynv6 api"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+  _get_keyfile
+  _info "using keyfile $dynv6_keyfile"
+  _get_domain "$fulldomain"
+  _your_hosts="$(ssh -i "$dynv6_keyfile" api@dynv6.com hosts)"
+  if ! _contains "$_your_hosts" "$_host"; then
+    _debug "The host is $_host and the record $_record"
+    _debug "Dynv6 returned $_your_hosts"
+    _err "The host $_host does not exists on your dynv6 account"
+    return 1
+  fi
+  _debug "found host on your account"
+  _info "$(ssh -i "$dynv6_keyfile" api@dynv6.com hosts "\"$_host\"" records del "\"$_record\"" txt)"
+  return 0
+
+}
+#################### Private functions below ##################################
+#Usage: No Input required
+#returns
+#dynv6_keyfile the path to the new keyfile that has been generated
+_generate_new_key() {
+  dynv6_keyfile="$(eval echo ~"$USER")/.ssh/dynv6"
+  _info "Path to key file used: $dynv6_keyfile"
+  if [ ! -f "$dynv6_keyfile" ] && [ ! -f "$dynv6_keyfile.pub" ]; then
+    _debug "generating key in $dynv6_keyfile and $dynv6_keyfile.pub"
+    ssh-keygen -f "$dynv6_keyfile" -t ssh-ed25519 -N ''
+  else
+    _err "There is already a file in $dynv6_keyfile or $dynv6_keyfile.pub"
+    return 1
+  fi
+
+}
+#Usage: _acme-challenge.www.example.dynv6.net
+#returns
+#_host= example.dynv6.net
+#_record=_acme-challenge.www
+#aborts if not a valid domain
+_get_domain() {
+  _full_domain="$1"
+  _debug "getting domain for $_full_domain"
+  if ! _contains "$_full_domain" 'dynv6.net' && ! _contains "$_full_domain" 'dns.army' && ! _contains "$_full_domain" 'dns.navy'; then
+    _err "The hosts does not seem to be a dynv6 host"
+    return 1
+  fi
+  _record="${_full_domain%.*}"
+  _record="${_record%.*}"
+  _record="${_record%.*}"
+  _debug "The record we are ging to use is $_record"
+  _host="$_full_domain"
+  while [ "$(echo "$_host" | grep -o '\.' | wc -l)" != "2" ]; do
+    _host="${_host#*.}"
+  done
+  _debug "And the host is $_host"
+  return 0
+
+}
+
+# Usage: No input required
+#returns
+#dynv6_keyfile path to the key that will be used
+_get_keyfile() {
+	_debug "get keyfile method called"
+  dynv6_keyfile="${dynv6_keyfile:-$(_readaccountconf_mutable dynv6_keyfile)}"
+  _debug Your key is "$dynv6_keyfile"
+  if [ -z "$dynv6_keyfile" ]; then
+    if [ -z "$KEY" ]; then
+      _err "You did not specify a key to use with dynv6"
+      _info "Creating new dynv6 api key to add to dynv6.com"
+      _generate_new_key
+      _info "Please add this key to dynv6.com $(cat "$dynv6_keyfile.pub")"
+      _info "Hit Enter to contiue"
+      read _
+      #save the credentials to the account conf file.
+    else
+      dynv6_keyfile="$KEY"
+    fi
+    _saveaccountconf_mutable dynv6_keyfile "$dynv6_keyfile"
+  fi
+
+
+}