acme.sh/dnsapi/dns_hetzner.sh

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#!/usr/bin/env sh
#
#HETZNER_Token="sdfsdfsdfljlbjkljlkjsdfoiwje"
#
HETZNER_Api="https://dns.hetzner.com/api/v1"
######## Public functions #####################
# Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
# Used to add txt record
# Ref: https://dns.hetzner.com/api-docs/
dns_hetzner_add() {
full_domain=$1
txt_value=$2
HETZNER_Token="${HETZNER_Token:-$(_readaccountconf_mutable HETZNER_Token)}"
if [ -z "$HETZNER_Token" ]; then
HETZNER_Token=""
_err "You didn't specify a Hetzner api token."
_err "You can get yours from here https://dns.hetzner.com/settings/api-token."
return 1
fi
#save the api key and email to the account conf file.
_saveaccountconf_mutable HETZNER_Token "$HETZNER_Token"
_debug "First detect the root zone"
if ! _get_root "$full_domain"; then
_err "Invalid domain"
return 1
fi
_debug _domain_id "$_domain_id"
_debug _sub_domain "$_sub_domain"
_debug _domain "$_domain"
_debug "Getting TXT records"
if ! _find_record "$_sub_domain" "$txt_value"; then
return 1
fi
if [ -z "$_record_id" ]; then
_info "Adding record"
if _hetzner_rest POST "records" "{\"zone_id\":\"${HETZNER_Zone_ID}\",\"type\":\"TXT\",\"name\":\"$_sub_domain\",\"value\":\"$txt_value\",\"ttl\":120}"; then
if _contains "$response" "$txt_value"; then
_info "Record added, OK"
_sleep 2
return 0
fi
fi
_err "Add txt record error${_response_error}"
return 1
else
_info "Found record id: $_record_id."
_info "Record found, do nothing."
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return 0
# we could modify a record, if the names for txt records for *.example.com and example.com would be not the same
#if _hetzner_rest PUT "records/${_record_id}" "{\"zone_id\":\"${HETZNER_Zone_ID}\",\"type\":\"TXT\",\"name\":\"$full_domain\",\"value\":\"$txt_value\",\"ttl\":120}"; then
# if _contains "$response" "$txt_value"; then
# _info "Modified, OK"
# return 0
# fi
#fi
#_err "Add txt record error (modify)."
#return 1
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fi
}
# Usage: full_domain txt_value
# Used to remove the txt record after validation
dns_hetzner_rm() {
full_domain=$1
txt_value=$2
HETZNER_Token="${HETZNER_Token:-$(_readaccountconf_mutable HETZNER_Token)}"
_debug "First detect the root zone"
if ! _get_root "$full_domain"; then
_err "Invalid domain"
return 1
fi
_debug _domain_id "$_domain_id"
_debug _sub_domain "$_sub_domain"
_debug _domain "$_domain"
_debug "Getting TXT records"
if ! _find_record "$_sub_domain" "$txt_value"; then
return 1
fi
if [ -z "$_record_id" ]; then
_info "Remove not needed. Record not found."
else
if ! _hetzner_rest DELETE "records/$_record_id"; then
_err "Delete record error${_response_error}"
return 1
fi
_sleep 2
_info "Record deleted"
fi
}
#################### Private functions below ##################################
#returns
# _record_id=a8d58f22d6931bf830eaa0ec6464bf81 if found; or 1 if error
_find_record() {
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unset _record_id
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_record_name=$1
_record_value=$2
if [ -z "$_record_value" ]; then
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_record_value='[^"]*'
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fi
_debug "Getting all records"
_hetzner_rest GET "records?zone_id=${_domain_id}"
if _response_has_error; then
_err "Error${_response_error}"
return 1
else
_record_id=$(
echo "$response" \
| grep -o "{[^\{\}]*\"name\":\"$_record_name\"[^\}]*}" \
| grep "\"value\":\"$_record_value\"" \
| while read -r record; do
# test for type and
if [ -n "$(echo "$record" | _egrep_o '"type":"TXT"')" ]; then
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echo "$record" | _egrep_o '"id":"[^"]*"' | cut -d : -f 2 | tr -d \"
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break
fi
done
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)
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fi
}
#_acme-challenge.www.domain.com
#returns
# _sub_domain=_acme-challenge.www
# _domain=domain.com
# _domain_id=sdjkglgdfewsdfg
_get_root() {
domain=$1
i=1
p=1
domain_without_acme=$(echo "$domain" | cut -d . -f 2-)
domain_param_name=$(echo "HETZNER_Zone_ID_for_${domain_without_acme}" | sed 's/[\.\-]/_/g')
_debug "Reading zone_id for '$domain_without_acme' from config..."
HETZNER_Zone_ID=$(_readdomainconf "$domain_param_name")
if [ "$HETZNER_Zone_ID" ]; then
_debug "Found, using: $HETZNER_Zone_ID"
if ! _hetzner_rest GET "zones/${HETZNER_Zone_ID}"; then
_debug "Zone with id '$HETZNER_Zone_ID' not exists."
_cleardomainconf "$domain_param_name"
unset HETZNER_Zone_ID
else
if _contains "$response" "\"id\":\"$HETZNER_Zone_ID\""; then
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_domain=$(printf "%s\n" "$response" | _egrep_o '"name":"[^"]*"' | cut -d : -f 2 | tr -d \" | head -n 1)
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if [ "$_domain" ]; then
_cut_length=$((${#domain} - ${#_domain} - 1))
_sub_domain=$(printf "%s" "$domain" | cut -c "1-$_cut_length")
_domain_id="$HETZNER_Zone_ID"
return 0
else
return 1
fi
else
return 1
fi
fi
fi
_debug "Trying to get zone id by domain name for '$domain_without_acme'."
while true; do
h=$(printf "%s" "$domain" | cut -d . -f $i-100)
if [ -z "$h" ]; then
#not valid
return 1
fi
_debug h "$h"
_hetzner_rest GET "zones?name=$h"
if _contains "$response" "\"name\":\"$h\"" || _contains "$response" '"total_entries":1'; then
_domain_id=$(echo "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
if [ "$_domain_id" ]; then
_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
_domain=$h
HETZNER_Zone_ID=$_domain_id
_savedomainconf "$domain_param_name" "$HETZNER_Zone_ID"
return 0
fi
return 1
fi
p=$i
i=$(_math "$i" + 1)
done
return 1
}
#returns
# _response_error
_response_has_error() {
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unset _response_error
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err_part="$(echo "$response" | _egrep_o '"error":{[^}]*}')"
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if [ -n "$err_part" ]; then
err_code=$(echo "$err_part" | _egrep_o '"code":[0-9]+' | cut -d : -f 2)
err_message=$(echo "$err_part" | _egrep_o '"message":"[^"]+"' | cut -d : -f 2 | tr -d \")
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if [ -n "$err_code" ] && [ -n "$err_message" ]; then
_response_error=" - message: ${err_message}, code: ${err_code}"
return 0
fi
fi
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return 1
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}
#returns
# response
_hetzner_rest() {
m=$1
ep="$2"
data="$3"
_debug "$ep"
key_trimmed=$(echo "$HETZNER_Token" | tr -d \")
export _H1="Content-TType: application/json"
export _H2="Auth-API-Token: $key_trimmed"
if [ "$m" != "GET" ]; then
_debug data "$data"
response="$(_post "$data" "$HETZNER_Api/$ep" "" "$m")"
else
response="$(_get "$HETZNER_Api/$ep")"
fi
if [ "$?" != "0" ] || _response_has_error; then
_debug "Error$_response_error"
return 1
fi
_debug2 response "$response"
return 0
}