acme.sh/dnsapi/dns_miab.sh

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#!/usr/bin/env sh
# Name: dns_miab.sh
#
# Authors:
# Darven Dissek 2018
# William Gertz 2019
#
# Thanks to Neil Pang and other developers here for code reused from acme.sh from DNS-01
# used to communicate with the MailinaBox Custom DNS API
# Report Bugs here:
# https://github.com/billgertz/MIAB_dns_api (for dns_miab.sh)
# https://github.com/acmesh-official/acme.sh (for acme.sh)
#
######## Public functions #####################
#Usage: dns_miab_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_miab_add() {
fulldomain=$1
txtvalue=$2
_info "Using miab challange add"
_debug fulldomain "$fulldomain"
_debug txtvalue "$txtvalue"
#retrieve MIAB environemt vars
if ! _retrieve_miab_env; then
return 1
fi
#check domain and seperate into doamin and host
if ! _get_root "$fulldomain"; then
_err "Cannot find any part of ${fulldomain} is hosted on ${MIAB_Server}"
return 1
fi
_debug2 _sub_domain "$_sub_domain"
_debug2 _domain "$_domain"
#add the challenge record
_api_path="custom/${fulldomain}/txt"
_miab_rest "$txtvalue" "$_api_path" "POST"
#check if result was good
if _contains "$response" "updated DNS"; then
_info "Successfully created the txt record"
return 0
else
_err "Error encountered during record add"
_err "$response"
return 1
fi
}
#Usage: dns_miab_rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_miab_rm() {
fulldomain=$1
txtvalue=$2
_info "Using miab challage delete"
_debug fulldomain "$fulldomain"
_debug txtvalue "$txtvalue"
#retrieve MIAB environemt vars
if ! _retrieve_miab_env; then
return 1
fi
#check domain and seperate into doamin and host
if ! _get_root "$fulldomain"; then
_err "Cannot find any part of ${fulldomain} is hosted on ${MIAB_Server}"
return 1
fi
_debug2 _sub_domain "$_sub_domain"
_debug2 _domain "$_domain"
#Remove the challenge record
_api_path="custom/${fulldomain}/txt"
_miab_rest "$txtvalue" "$_api_path" "DELETE"
#check if result was good
if _contains "$response" "updated DNS"; then
_info "Successfully removed the txt record"
return 0
else
_err "Error encountered during record remove"
_err "$response"
return 1
fi
}
#################### Private functions below ##################################
#
#Usage: _get_root _acme-challenge.www.domain.com
#Returns:
# _sub_domain=_acme-challenge.www
# _domain=domain.com
_get_root() {
_passed_domain=$1
_debug _passed_domain "$_passed_domain"
_i=2
_p=1
#get the zones hosed on MIAB server, must be a json stream
_miab_rest "" "zones" "GET"
if ! _is_json "$response"; then
_err "ERROR fetching domain list"
_err "$response"
return 1
fi
#cycle through the passed domain seperating out a test domain discarding
# the subdomain by marching thorugh the dots
while true; do
_test_domain=$(printf "%s" "$_passed_domain" | cut -d . -f ${_i}-100)
_debug _test_domain "$_test_domain"
if [ -z "$_test_domain" ]; then
return 1
fi
#report found if the test domain is in the json response and
# report the subdomain
if _contains "$response" "\"$_test_domain\""; then
_sub_domain=$(printf "%s" "$_passed_domain" | cut -d . -f 1-${_p})
_domain=${_test_domain}
return 0
fi
#cycle to the next dot in the passed domain
_p=${_i}
_i=$(_math "$_i" + 1)
done
return 1
}
#Usage: _retrieve_miab_env
#Returns (from store or environment variables):
# MIAB_Username
# MIAB_Password
# MIAB_Server
#retrieve MIAB environment variables, report errors and quit if problems
_retrieve_miab_env() {
MIAB_Username="${MIAB_Username:-$(_readaccountconf_mutable MIAB_Username)}"
MIAB_Password="${MIAB_Password:-$(_readaccountconf_mutable MIAB_Password)}"
MIAB_Server="${MIAB_Server:-$(_readaccountconf_mutable MIAB_Server)}"
#debug log the environmental variables
_debug MIAB_Username "$MIAB_Username"
_debug MIAB_Password "$MIAB_Password"
_debug MIAB_Server "$MIAB_Server"
#check if MIAB environemt vars set and quit if not
if [ -z "$MIAB_Username" ] || [ -z "$MIAB_Password" ] || [ -z "$MIAB_Server" ]; then
_err "You didn't specify one or more of MIAB_Username, MIAB_Password or MIAB_Server."
_err "Please check these environment variables and try again."
return 1
fi
#save the credentials to the account conf file.
_saveaccountconf_mutable MIAB_Username "$MIAB_Username"
_saveaccountconf_mutable MIAB_Password "$MIAB_Password"
_saveaccountconf_mutable MIAB_Server "$MIAB_Server"
}
#Useage: _miab_rest "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" "custom/_acme-challenge.www.domain.com/txt "POST"
#Returns: "updated DNS: domain.com"
#rest interface MIAB dns
_miab_rest() {
_data="$1"
_api_path="$2"
_httpmethod="$3"
#encode username and password for basic authentication
_credentials="$(printf "%s" "$MIAB_Username:$MIAB_Password" | _base64)"
export _H1="Authorization: Basic $_credentials"
_url="https://${MIAB_Server}/admin/dns/${_api_path}"
_debug2 _data "$_data"
_debug _api_path "$_api_path"
_debug2 _url "$_url"
_debug2 _credentails "$_credentials"
_debug _httpmethod "$_httpmethod"
if [ "$_httpmethod" = "GET" ]; then
response="$(_get "$_url")"
else
response="$(_post "$_data" "$_url" "" "$_httpmethod")"
fi
_retcode="$?"
if [ "$_retcode" != "0" ]; then
_err "MIAB REST authentication failed on $_httpmethod"
return 1
fi
_debug response "$response"
return 0
}
#Usage: _is_json "\[\n "mydomain.com"\n]"
#Reurns "\[\n "mydomain.com"\n]"
#returns the string if it begins and ends with square braces
_is_json() {
_str="$(echo "$1" | _normalizeJson)"
echo "$_str" | grep '^\[.*\]$' >/dev/null 2>&1
}