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#!/usr/bin/env sh |
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#Created by RaidenII, to use DuckDNS's API to add/remove text records |
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#06/27/2017 |
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# Pass credentials before "acme.sh --issue --dns dns_duckdns ..." |
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# -- |
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# export DuckDNS_Token="aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee" |
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# -- |
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# |
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# Due to the fact that DuckDNS uses StartSSL as cert provider, --insecure may need to be used with acme.sh |
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DuckDNS_API="https://www.duckdns.org/update" |
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######## Public functions ##################### |
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#Usage: dns_duckdns_add _acme-challenge.domain.duckdns.org "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" |
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dns_duckdns_add() { |
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fulldomain=$1 |
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txtvalue=$2 |
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DuckDNS_Token="${DuckDNS_Token:-$(_readaccountconf_mutable DuckDNS_Token)}" |
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if [ -z "$DuckDNS_Token" ]; then |
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_err "You must export variable: DuckDNS_Token" |
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_err "The token for your DuckDNS account is necessary." |
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_err "You can look it up in your DuckDNS account." |
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return 1 |
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fi |
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# Now save the credentials. |
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_saveaccountconf_mutable DuckDNS_Token "$DuckDNS_Token" |
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# Unfortunately, DuckDNS does not seems to support lookup domain through API |
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# So I assume your credentials (which are your domain and token) are correct |
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# If something goes wrong, we will get a KO response from DuckDNS |
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if ! _duckdns_get_domain; then |
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return 1 |
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fi |
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# Now add the TXT record to DuckDNS |
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_info "Trying to add TXT record" |
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if _duckdns_rest GET "domains=$_duckdns_domain&token=$DuckDNS_Token&txt=$txtvalue"; then |
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if [ "$response" = "OK" ]; then |
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_info "TXT record has been successfully added to your DuckDNS domain." |
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_info "Note that all subdomains under this domain uses the same TXT record." |
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return 0 |
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else |
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_err "Errors happened during adding the TXT record, response=$response" |
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return 1 |
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fi |
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else |
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_err "Errors happened during adding the TXT record." |
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return 1 |
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fi |
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} |
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#Usage: fulldomain txtvalue |
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#Remove the txt record after validation. |
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dns_duckdns_rm() { |
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fulldomain=$1 |
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txtvalue=$2 |
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DuckDNS_Token="${DuckDNS_Token:-$(_readaccountconf_mutable DuckDNS_Token)}" |
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if [ -z "$DuckDNS_Token" ]; then |
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_err "You must export variable: DuckDNS_Token" |
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_err "The token for your DuckDNS account is necessary." |
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_err "You can look it up in your DuckDNS account." |
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return 1 |
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fi |
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if ! _duckdns_get_domain; then |
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return 1 |
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fi |
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# Now remove the TXT record from DuckDNS |
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_info "Trying to remove TXT record" |
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if _duckdns_rest GET "domains=$_duckdns_domain&token=$DuckDNS_Token&txt=&clear=true"; then |
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if [ "$response" = "OK" ]; then |
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_info "TXT record has been successfully removed from your DuckDNS domain." |
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return 0 |
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else |
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_err "Errors happened during removing the TXT record, response=$response" |
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return 1 |
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fi |
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else |
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_err "Errors happened during removing the TXT record." |
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return 1 |
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fi |
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} |
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#################### Private functions below ################################## |
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#fulldomain=_acme-challenge.domain.duckdns.org |
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#returns |
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# _duckdns_domain=domain |
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_duckdns_get_domain() { |
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# We'll extract the domain/username from full domain |
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_duckdns_domain="$(printf "%s" "$fulldomain" | _lower_case | _egrep_o '[.][^.][^.]*[.]duckdns.org' | cut -d . -f 2)" |
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if [ -z "$_duckdns_domain" ]; then |
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_err "Error extracting the domain." |
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return 1 |
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fi |
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return 0 |
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} |
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#Usage: method URI |
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_duckdns_rest() { |
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method=$1 |
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param="$2" |
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_debug param "$param" |
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url="$DuckDNS_API?$param" |
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_debug url "$url" |
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# DuckDNS uses GET to update domain info |
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if [ "$method" = "GET" ]; then |
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response="$(_get "$url")" |
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else |
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_err "Unsupported method" |
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return 1 |
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fi |
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_debug2 response "$response" |
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return 0 |
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} |
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