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acme.sh/dnsapi/dns_bunny.sh

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