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#!/usr/bin/env sh
# shellcheck disable=SC2034
dns_acmedns_info='acme-dns Server API
The acme-dns is a limited DNS server with RESTful API to handle ACME DNS challenges.
Site: github.com/joohoi/acme-dns
Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_acmedns
Options:
ACMEDNS_USERNAME Username. Optional.
ACMEDNS_PASSWORD Password. Optional.
ACMEDNS_SUBDOMAIN Subdomain. Optional.
ACMEDNS_STORAGE JSON config. Optional.
ACMEDNS_BASE_URL API endpoint. Default: "https://auth.acme-dns.io".
Issues: github.com/dampfklon/acme.sh
Author: Wolfgang Ebner, Sven Neubuaer
'
########## Public functions ##########
#Usage: dns_acmedns_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
# Used to add txt record
dns_acmedns_add() {
fulldomain=$1
txtvalue=$2
_info "Using acme-dns"
_debug "fulldomain $fulldomain"
_debug "txtvalue $txtvalue"
#for compatiblity from account conf
ACMEDNS_USERNAME="${ACMEDNS_USERNAME:-$(_readaccountconf_mutable ACMEDNS_USERNAME)}"
_clearaccountconf_mutable ACMEDNS_USERNAME
ACMEDNS_PASSWORD="${ACMEDNS_PASSWORD:-$(_readaccountconf_mutable ACMEDNS_PASSWORD)}"
_clearaccountconf_mutable ACMEDNS_PASSWORD
ACMEDNS_SUBDOMAIN="${ACMEDNS_SUBDOMAIN:-$(_readaccountconf_mutable ACMEDNS_SUBDOMAIN)}"
_clearaccountconf_mutable ACMEDNS_SUBDOMAIN
# Load per-domain config
ACMEDNS_BASE_URL="${ACMEDNS_BASE_URL:-$(_readdomainconf ACMEDNS_BASE_URL)}"
ACMEDNS_USERNAME="${ACMEDNS_USERNAME:-$(_readdomainconf ACMEDNS_USERNAME)}"
ACMEDNS_PASSWORD="${ACMEDNS_PASSWORD:-$(_readdomainconf ACMEDNS_PASSWORD)}"
ACMEDNS_SUBDOMAIN="${ACMEDNS_SUBDOMAIN:-$(_readdomainconf ACMEDNS_SUBDOMAIN)}"
ACMEDNS_STORAGE="${ACMEDNS_STORAGE:-$(_readdomainconf ACMEDNS_STORAGE)}"
# Detect if user explicitly configured JSON storage
_use_storage_conf=""
[ -n "$ACMEDNS_STORAGE" ] && _use_storage_conf=1
# Load from JSON storage if credentials are incomplete
if [ -z "$ACMEDNS_USERNAME" ] || [ -z "$ACMEDNS_PASSWORD" ] || [ -z "$ACMEDNS_SUBDOMAIN" ]; then
_acmedns_lookup_from_json "$fulldomain"
fi
# Default acme-dns endpoint
[ -z "$ACMEDNS_BASE_URL" ] && ACMEDNS_BASE_URL="https://auth.acme-dns.io"
ACMEDNS_UPDATE_URL="$ACMEDNS_BASE_URL/update"
ACMEDNS_REGISTER_URL="$ACMEDNS_BASE_URL/register"
if [ -z "$ACMEDNS_USERNAME" ] || [ -z "$ACMEDNS_PASSWORD" ]; then
response="$(_post "" "$ACMEDNS_REGISTER_URL" "" "POST")"
_debug response "$response"
ACMEDNS_USERNAME=$(echo "$response" | sed -n 's/^{.*\"username\":[ ]*\"\([^\"]*\)\".*}/\1/p')
_debug "received username: $ACMEDNS_USERNAME"
ACMEDNS_PASSWORD=$(echo "$response" | sed -n 's/^{.*\"password\":[ ]*\"\([^\"]*\)\".*}/\1/p')
_debug "received password: $ACMEDNS_PASSWORD"
ACMEDNS_SUBDOMAIN=$(echo "$response" | sed -n 's/^{.*\"subdomain\":[ ]*\"\([^\"]*\)\".*}/\1/p')
_debug "received subdomain: $ACMEDNS_SUBDOMAIN"
ACMEDNS_FULLDOMAIN=$(echo "$response" | sed -n 's/^{.*\"fulldomain\":[ ]*\"\([^\"]*\)\".*}/\1/p')
_info "##########################################################"
_info "# Create $fulldomain CNAME $ACMEDNS_FULLDOMAIN DNS entry #"
_info "##########################################################"
_info "Press enter to continue... "
read -r _
fi
# Save per-domain config
_savedomainconf ACMEDNS_BASE_URL "$ACMEDNS_BASE_URL"
# Save either JSON storage or credentials (mutually exclusive)
if [ "$_use_storage_conf" = "1" ]; then
_savedomainconf ACMEDNS_STORAGE "$ACMEDNS_STORAGE"
_cleardomainconf ACMEDNS_USERNAME
_cleardomainconf ACMEDNS_PASSWORD
_cleardomainconf ACMEDNS_SUBDOMAIN
else
_savedomainconf ACMEDNS_USERNAME "$ACMEDNS_USERNAME"
_savedomainconf ACMEDNS_PASSWORD "$ACMEDNS_PASSWORD"
_savedomainconf ACMEDNS_SUBDOMAIN "$ACMEDNS_SUBDOMAIN"
_cleardomainconf ACMEDNS_STORAGE
fi
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 ##########
_acmedns_lookup_from_json() {
_fulldomain="$1"
_domain="${_fulldomain#_acme-challenge.}"
_storage="$ACMEDNS_STORAGE"
[ -z "$_storage" ] && _storage="$HOME/.acme-dns.json"
[ ! -f "$_storage" ] && return 1
# Escape dots in the domain for use in sed
_safe_domain=$(printf '%s\n' "$_domain" | sed 's/\./\\./g')
_entry="$(
sed -n "/\"$_safe_domain\"[[:space:]]*:/,/}/p" "$_storage"
)"
[ -z "$_entry" ] && return 1
_server_url="$(echo "$_entry" | sed -n 's/.*"server_url":[ ]*"\([^"]*\)".*/\1/p')"
_username="$(echo "$_entry" | sed -n 's/.*"username":[ ]*"\([^"]*\)".*/\1/p')"
_password="$(echo "$_entry" | sed -n 's/.*"password":[ ]*"\([^"]*\)".*/\1/p')"
_subdomain="$(echo "$_entry" | sed -n 's/.*"subdomain":[ ]*"\([^"]*\)".*/\1/p')"
[ -n "$_server_url" ] && ACMEDNS_BASE_URL="$_server_url"
[ -n "$_username" ] && ACMEDNS_USERNAME="$_username"
[ -n "$_password" ] && ACMEDNS_PASSWORD="$_password"
[ -n "$_subdomain" ] && ACMEDNS_SUBDOMAIN="$_subdomain"
ACMEDNS_STORAGE="$_storage"
return 0
}