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128 lines
3.5 KiB
128 lines
3.5 KiB
#!/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=acme-challenge-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 | sed 's/^\([a-z0-9-]*\)\.duckdns\.org/\1/')"
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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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