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Create dns_bunny.sh
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Shane Bishop
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dnsapi/dns_bunny.sh
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dnsapi/dns_bunny.sh
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#!/bin/bash
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## Will be called by acme.sh to add the TXT record to via the Bunny DNS API.
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## returns 0 means success, otherwise error.
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## Author: nosilver4u <nosilver4u at ewww.io>
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## GitHub: https://github.com/nosilver4u/acme.sh
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##
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## Environment Variables Required:
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##
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## BUNNY_API_KEY="75310dc4-ca77-9ac3-9a19-f6355db573b49ce92ae1-2655-3ebd-61ac-3a3ae34834cc"
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##
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##################### Public functions #####################
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## Create the text record for validation.
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## Usage: fulldomain txtvalue
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## EG: "_acme-challenge.www.other.domain.com" "XKrxpRBosdq0HG9i01zxXp5CPBs"
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dns_bunny_add() {
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fulldomain="$(echo "$1" | _lower_case)"
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txtvalue=$2
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BUNNY_API_KEY="${BUNNY_API_KEY:-$(_readaccountconf_mutable BUNNY_API_KEY)}"
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# Check if API Key is set
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if [ -z "$BUNNY_API_KEY" ]; then
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BUNNY_API_KEY=""
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_err "You did not specify Bunny.net API key."
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_err "Please export BUNNY_API_KEY and try again."
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return 1
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fi
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_info "Using Bunny.net dns validation - add record"
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_debug fulldomain "$fulldomain"
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_debug txtvalue "$txtvalue"
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## save the env vars (key and domain split location) for later automated use
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_saveaccountconf_mutable BUNNY_API_KEY "$BUNNY_API_KEY"
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## split the domain for Bunny API
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if ! _get_base_domain "$fulldomain"; then
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_err "domain not found in your account for addition"
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return 1
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fi
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_debug _sub_domain "$_sub_domain"
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_debug _domain "$_domain"
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_debug _domain_id "$_domain_id"
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## Set the header with our post type and auth key
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export _H1="Accept: application/json"
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export _H2="AccessKey: $BUNNY_API_KEY"
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export _H3="Content-Type: application/json"
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PURL="https://api.bunny.net/dnszone/$_domain_id/records"
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PBODY='{"Id":'$_domain_id',"Type":3,"Name":"'$_sub_domain'","Value":"'$txtvalue'","ttl":120}'
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_debug PURL "$PURL"
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_debug PBODY "$PBODY"
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## the create request - POST
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## args: BODY, URL, [need64, httpmethod]
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response="$(_post "$PBODY" "$PURL" "" "PUT")"
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## check response
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if [ "$?" != "0" ]; then
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_err "error in response: $response"
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return 1
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fi
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_debug2 response "$response"
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## finished correctly
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return 0
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}
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## Remove the txt record after validation.
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## Usage: fulldomain txtvalue
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## EG: "_acme-challenge.www.other.domain.com" "XKrxpRBosdq0HG9i01zxXp5CPBs"
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dns_bunny_rm() {
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fulldomain="$(echo "$1" | _lower_case)"
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txtvalue=$2
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BUNNY_API_KEY="${BUNNY_API_KEY:-$(_readaccountconf_mutable BUNNY_API_KEY)}"
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# Check if API Key Exists
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if [ -z "$BUNNY_API_KEY" ]; then
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BUNNY_API_KEY=""
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_err "You did not specify Bunny.net API key."
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_err "Please export BUNNY_API_KEY and try again."
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return 1
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fi
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_info "Using Bunny.net dns validation - remove record"
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_debug fulldomain "$fulldomain"
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_debug txtvalue "$txtvalue"
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## split the domain for Bunny API
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if ! _get_base_domain "$fulldomain"; then
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_err "Domain not found in your account for TXT record removal"
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return 1
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fi
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_debug _sub_domain "$_sub_domain"
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_debug _domain "$_domain"
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_debug _domain_id "$_domain_id"
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## Set the header with our post type and key auth key
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export _H1="Accept: application/json"
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export _H2="AccessKey: $BUNNY_API_KEY"
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## get URL for the list of DNS records
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GURL="https://api.bunny.net/dnszone/$_domain_id"
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## 1) Get the domain/zone records
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## the fetch request - GET
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## args: URL, [onlyheader, timeout]
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domain_list="$(_get "$GURL")"
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## check response
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if [ "$?" != "0" ]; then
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_err "error in domain_list response: $domain_list"
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return 1
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fi
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_debug2 domain_list "$domain_list"
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## 2) search through records
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## check for what we are looking for: "Type":3,"Value":"$txtvalue","Name":"$_sub_domain"
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record="$(echo "$domain_list" | _egrep_o "\"Id\"\s*\:\s*\"*[0-9]+\"*,\s*\"Type\"[^}]*\"Value\"\s*\:\s*\"$txtvalue\"[^}]*\"Name\"\s*\:\s*\"$_sub_domain\"")"
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if [ -n "$record" ]; then
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## We found records
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rec_ids="$(echo "$record" | _egrep_o "Id\"\s*\:\s*\"*[0-9]+" | _egrep_o "[0-9]+")"
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_debug rec_ids "$rec_ids"
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if [ -n "$rec_ids" ]; then
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echo "$rec_ids" | while IFS= read -r rec_id; do
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## delete the record
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## delete URL for removing the one we dont want
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DURL="https://api.bunny.net/dnszone/$_domain_id/records/$rec_id"
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## the removal request - DELETE
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## args: BODY, URL, [need64, httpmethod]
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response="$(_post "" "$DURL" "" "DELETE")"
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## check response (sort of)
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if [ "$?" != "0" ]; then
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_err "error in remove response: $response"
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return 1
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fi
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_debug2 response "$response"
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done
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fi
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fi
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## finished correctly
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return 0
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}
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##################### Private functions below #####################
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## Split the domain provided into the "base domain" and the "start prefix".
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## This function searches for the longest subdomain in your account
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## for the full domain given and splits it into the base domain (zone)
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## and the prefix/record to be added/removed
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## USAGE: fulldomain
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## EG: "_acme-challenge.two.three.four.domain.com"
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## returns
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## _sub_domain="_acme-challenge.two"
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## _domain="three.four.domain.com" *IF* zone "three.four.domain.com" exists
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## _domain_id=234
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## if only "domain.com" exists it will return
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## _sub_domain="_acme-challenge.two.three.four"
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## _domain="domain.com"
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## _domain_id=234
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_get_base_domain() {
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# args
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fulldomain="$(echo "$1" | _lower_case)"
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_debug fulldomain "$fulldomain"
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# domain max legal length = 253
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MAX_DOM=255
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page=1
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## get a list of domains for the account to check thru
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## Set the headers
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export _H1="Accept: application/json"
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export _H2="AccessKey: $BUNNY_API_KEY"
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_debug BUNNY_API_KEY "$BUNNY_API_KEY"
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## get URL for the list of domains
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## may get: "links":{"pages":{"last":".../v2/domains/DOM/records?page=2","next":".../v2/domains/DOM/records?page=2"}}
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DOMURL="https://api.bunny.net/dnszone"
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## while we dont have a matching domain we keep going
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while [ -z "$found" ]; do
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## get the domain list (current page)
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domain_list="$(_get "$DOMURL")"
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## check response
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if [ "$?" != "0" ]; then
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_err "error in domain_list response: $domain_list"
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return 1
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fi
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_debug2 domain_list "$domain_list"
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## for each shortening of our $fulldomain, check if it exists in the $domain_list
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## can never start on 1 (aka whole $fulldomain) as $fulldomain starts with "_acme-challenge"
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i=2
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while [ $i -gt 0 ]; do
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## get next longest domain
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_domain=$(printf "%s" "$fulldomain" | cut -d . -f "$i"-"$MAX_DOM")
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## check we got something back from our cut (or are we at the end)
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if [ -z "$_domain" ]; then
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break
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fi
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## we got part of a domain back - grep it out
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found="$(echo "$domain_list" | _egrep_o "\"Id\"\s*:\s*\"*[0-9]+\"*,\s*\"Domain\"\s*\:\s*\"$_domain\"")"
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## check if it exists
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if [ -n "$found" ]; then
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## exists - exit loop returning the parts
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sub_point=$(_math $i - 1)
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_sub_domain=$(printf "%s" "$fulldomain" | cut -d . -f 1-"$sub_point")
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_domain_id="$(echo "$found" | _egrep_o "Id\"\s*\:\s*\"*[0-9]+" | _egrep_o "[0-9]+")"
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_debug _domain_id "$_domain_id"
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_debug _domain "$_domain"
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_debug _sub_domain "$_sub_domain"
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found=""
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return 0
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fi
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## increment cut point $i
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i=$(_math $i + 1)
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done
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if [ -z "$found" ]; then
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page=$(_math $page + 1)
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nextpage="https://api.bunny.net/dnszone?page=$page"
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## Find the next page if we don't have a match.
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hasnextpage="$(echo "$domain_list" | _egrep_o "\"HasMoreItems\"\s*:\s*true")"
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if [ -z "$hasnextpage" ]; then
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_err "No record and no nextpage in Bunny.net domain search."
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found=""
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return 1
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fi
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_debug2 nextpage "$nextpage"
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DOMURL="$nextpage"
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fi
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done
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## We went through the entire domain zone list and didn't find one that matched.
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## If we ever get here, something is broken in the code...
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_err "Domain not found in Bunny.net account, but we should never get here!"
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found=""
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return 1
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}
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