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#!/usr/bin/env sh
#Created by RaidenII, to use DuckDNS's API to add/remove text records #06/27/2017
# Currently only support single domain access # Due to the fact that DuckDNS uses StartSSL as cert provider, --insecure must be used with acme.sh
DuckDNS_API="https://www.duckdns.org/update" API_Params="domains=$DuckDNS_domain&token=$DuckDNS_token"
######## Public functions #####################
#Usage: dns_duckdns_add _acme-challenge.domain.duckdns.org "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" dns_duckdns_add() { fulldomain=$1 txtvalue=$2
# We'll extract the domain/username from full domain DuckDNS_domain=$(printf "%s\n" "$fulldomain" | rev | cut -d \. -f 3 | rev)
if [ -z "$DuckDNS_domain" ]; then _err "Error extracting the domain." return 1 fi
if [ -z "$DuckDNS_token" ]; then DuckDNS_token="" _err "The token for your DuckDNS account is necessary." _err "You can look it up in your DuckDNS account." return 1 fi
# Now save the credentials. _saveaccountconf DuckDNS_domain "$DuckDNS_domain" _saveaccountconf DuckDNS_token "$DuckDNS_token"
# Unfortunately, DuckDNS does not seems to support lookup domain through API # So I assume your credentials (which are your domain and token) are correct # If something goes wrong, we will get a KO response from DuckDNS
# Now add the TXT record to DuckDNS _info "Trying to add TXT record" if _duckdns_rest GET "$API_Params&txt=$txtvalue" && [ "$response" -eq "OK" ]; then _info "TXT record has been successfully added to your DuckDNS domain." _info "Note that all subdomains under this domain uses the same TXT record." return 0 else _err "Errors happened during adding the TXT record." return 1 fi }
#Usage: fulldomain txtvalue #Remove the txt record after validation. dns_duckdns_rm() { fulldomain=$1 txtvalue=$2
# Now remove the TXT record from DuckDNS _info "Trying to remove TXT record" if _duckdns_rest GET "$API_Params&txt=&clear=true" && [ "$response" -eq "OK" ]; then _info "TXT record has been successfully removed from your DuckDNS domain." return 0 else _err "Errors happened during removing the TXT record." return 1 fi }
#################### Private functions below ##################################
#Usage: method URI _duckdns_rest() { method=$1 param="$2" _debug param "$param" url="$DuckDNS_API?$param" _debug url "$url"
# DuckDNS uses GET to update domain info if [ "$method" -eq "GET" ]; then response="$(_get "$url")" else _err "Unsupported method" return 1 fi
_debug response "$response" return 0 }
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