acme.sh/dnsapi/dns_he.sh

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#!/usr/bin/env sh
########################################################################
# Hurricane Electric hook script for acme.sh
#
# Environment variables:
#
# - $HE_Username (your dns.he.net username)
# - $HE_Password (your dns.he.net password)
#
# Author: Ondrej Simek <me@ondrejsimek.com>
# Git repo: https://github.com/angel333/acme.sh
#-- dns_he_add() - Add TXT record --------------------------------------
# Usage: dns_he_add _acme-challenge.subdomain.domain.com "XyZ123..."
dns_he_add() {
_full_domain=$1
_txt_value=$2
_info "Using DNS-01 Hurricane Electric hook"
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if [ -z "$HE_Username" ] || [ -z "$HE_Password" ]; then
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HE_Username=
HE_Password=
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_err "No auth details provided. Please set user credentials using the \$HE_Username and \$HE_Password envoronment variables."
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return 1
fi
_saveaccountconf HE_Username "$HE_Username"
_saveaccountconf HE_Password "$HE_Password"
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# Fills in the $_zone_id
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_find_zone "$_full_domain" || return 1
_debug "Zone id \"$_zone_id\" will be used."
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body="email=${HE_Username}&pass=${HE_Password}"
body="$body&account="
body="$body&menu=edit_zone"
body="$body&Type=TXT"
body="$body&hosted_dns_zoneid=$_zone_id"
body="$body&hosted_dns_recordid="
body="$body&hosted_dns_editzone=1"
body="$body&Priority="
body="$body&Name=$_full_domain"
body="$body&Content=$_txt_value"
body="$body&TTL=300"
body="$body&hosted_dns_editrecord=Submit"
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response="$(_post "$body" "https://dns.he.net/")"
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exit_code="$?"
if [ "$exit_code" -eq 0 ]; then
_info "TXT record added successfuly."
else
_err "Couldn't add the TXT record."
return "$exit_code"
fi
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_debug2 response "$response"
}
#-- dns_he_rm() - Remove TXT record ------------------------------------
# Usage: dns_he_rm _acme-challenge.subdomain.domain.com "XyZ123..."
dns_he_rm() {
_full_domain=$1
_txt_value=$2
_info "Cleaning up after DNS-01 Hurricane Electric hook"
# fills in the $_zone_id
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_find_zone "$_full_domain" || return 1
_debug "Zone id \"$_zone_id\" will be used."
# Find the record id to clean
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body="email=${HE_Username}&pass=${HE_Password}"
body="$body&hosted_dns_zoneid=$_zone_id"
body="$body&menu=edit_zone"
body="$body&hosted_dns_editzone="
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_record_id=$(_post "$body" "https://dns.he.net/" \
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| tr -d '\n' \
| _egrep_o "data=\"&quot;${_txt_value}&quot;([^>]+>){6}[^<]+<[^;]+;deleteRecord\('[0-9]+','${_full_domain}','TXT'\)" \
| _egrep_o "[0-9]+','${_full_domain}','TXT'\)$" \
| _egrep_o "^[0-9]+"
)
# The series of egreps above could have been done a bit shorter but
# I wanted to double-check whether it's the correct record (in case
# HE changes their website somehow).
# Remove the record
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body="email=${HE_Username}&pass=${HE_Password}"
body="$body&menu=edit_zone"
body="$body&hosted_dns_zoneid=$_zone_id"
body="$body&hosted_dns_recordid=$_record_id"
body="$body&hosted_dns_editzone=1"
body="$body&hosted_dns_delrecord=1"
body="$body&hosted_dns_delconfirm=delete"
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_post "$body" "https://dns.he.net/" \
| grep '<div id="dns_status" onClick="hideThis(this);">Successfully removed record.</div>' \
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>/dev/null
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if [ "$?" -eq 0 ]; then
_info "Record removed successfuly."
else
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_err "Could not clean (remove) up the record. Please go to HE administration interface and clean it by hand."
fi
}
########################## PRIVATE FUNCTIONS ###########################
#-- _find_zone() -------------------------------------------------------
# Returns the most specific zone found in administration interface.
#
# Example:
#
# _find_zone first.second.third.co.uk
#
# ... will return the first zone that exists in admin out of these:
# - "first.second.third.co.uk"
# - "second.third.co.uk"
# - "third.co.uk"
# - "co.uk" <-- unlikely
# - "uk" <-'
#
# (another approach would be something like this:
# https://github.com/hlandau/acme/blob/master/_doc/dns.hook
# - that's better if there are multiple pages. It's so much simpler.
# )
_find_zone() {
_domain="$1"
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body="email=${HE_Username}&pass=${HE_Password}"
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_matches=$(_post "$body" "https://dns.he.net/" \
| _egrep_o "delete_dom.*name=\"[^\"]+\" value=\"[0-9]+"
)
# Zone names and zone IDs are in same order
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_zone_ids=$(echo "$_matches" | cut -d '"' -f 5)
_zone_names=$(echo "$_matches" | cut -d '"' -f 3)
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_debug2 "These are the zones on this HE account:"
_debug2 "$_zone_names"
_debug2 "And these are their respective IDs:"
_debug2 "$_zone_ids"
# Walk through all possible zone names
_strip_counter=1
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while true; do
_attempted_zone=$(echo "$_domain" | cut -d . -f ${_strip_counter}-)
# All possible zone names have been tried
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if [ -z "$_attempted_zone" ]; then
_err "No zone for domain \"$_domain\" found."
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return 1
fi
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_debug "Looking for zone \"${_attempted_zone}\""
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# Take care of "." and only match whole lines. Note that grep -F
# cannot be used because there's no way to make it match whole
# lines.
regex="^$(echo "$_attempted_zone" | sed 's/\./\\./g')$"
line_num=$(echo "$_zone_names" \
| grep -n "$regex" \
| cut -d : -f 1
)
if [ -n "$line_num" ]; then
_zone_id=$(echo "$_zone_ids" | sed "${line_num}q;d")
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_debug "Found relevant zone \"$_attempted_zone\" with id \"$_zone_id\" - will be used for domain \"$_domain\"."
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return 0
fi
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_debug "Zone \"$_attempted_zone\" doesn't exist, let's try a less specific zone."
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_strip_counter=$(_math "$_strip_counter" + 1)
done
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}
# vim: et:ts=2:sw=2: