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370 lines
10 KiB
370 lines
10 KiB
#!/usr/bin/env sh
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# shellcheck disable=SC2034
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dns_myapi_info='omg.lol
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Based on the omg.lol API, defined at https://api.omg.lol/
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Domains: omg.lol
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Site: github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
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Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_duckdns
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Options:
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omglolapikey API Key from omg.lol. This is accesible from the bottom of the account page at https://home.omg.lol/account
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omgloladdress This is your omg.lol address, without the preceding @ - you can see your list on your dashboard at https://home.omg.lol/dashboard
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Issues: github.com/acmesh-official/acme.sh
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Author: @Kholin <kholin+omglolapi@omg.lol>
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'
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#returns 0 means success, otherwise error.
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######## Public functions #####################
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# Please Read this guide first: https://github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
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#Usage: dns_myapi_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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dns_omglol_add() {
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fulldomain=$1
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txtvalue=$2
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omglol_apikey="${omglol_apikey:-$(_readaccountconf_mutable omglol_apikey)}"
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omglol_address="${omglol_address:-$(_readaccountconf_mutable omglol_address)}"
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# As omg.lol includes a leading @ for their addresses, pre-strip this before save
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omglol_address="$(echo "$omglol_address" | tr -d '@')"
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_saveaccountconf_mutable omglol_apikey "$omglol_apikey"
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_saveaccountconf_mutable omglol_address "$omglol_address"
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_info "Using omg.lol."
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_debug "Function" "dns_omglol_add()"
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_debug "Full Domain Name" "$fulldomain"
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_debug "txt Record Value" "$txtvalue"
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_secure_debug "omg.lol API key" "$omglol_apikey"
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_debug "omg.lol Address" "$omglol_address"
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omglol_validate "$omglol_apikey" "$omglol_address" "$fulldomain"
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if [ ! $? ]; then
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return 1
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fi
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dnsName=$(_getDnsRecordName "$fulldomain" "$omglol_address")
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authHeader="$(_createAuthHeader "$omglol_apikey")"
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_debug2 " dns_omglol_add(): Address" "$dnsName"
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omglol_add "$omglol_address" "$authHeader" "$dnsName" "$txtvalue"
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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_omglol_rm() {
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fulldomain=$1
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txtvalue=$2
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omglol_apikey="${omglol_apikey:-$(_readaccountconf_mutable omglol_apikey)}"
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omglol_address="${omglol_address:-$(_readaccountconf_mutable omglol_address)}"
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# As omg.lol includes a leading @ for their addresses, strip this in case provided
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omglol_address="$(echo "$omglol_address" | tr -d '@')"
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_info "Using omg.lol"
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_debug fulldomain "$fulldomain"
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_secure_debug ApiKey "$omglol_apikey"
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_debug address "$omglol_address"
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omglol_validate "$omglol_apikey" "$omglol_address" "$fulldomain"
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if [ ! $? ]; then
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return 1
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fi
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dnsName=$(_getDnsRecordName "$fulldomain" "$omglol_address")
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authHeader="$(_createAuthHeader "$omglol_apikey")"
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omglol_delete "$omglol_address" "$authHeader" "$dnsName" "$txtvalue"
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}
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#################### Private functions below ##################################
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# Check that the minimum requirements are present. Close ungracefully if not
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omglol_validate() {
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omglol_apikey=$1
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omglol_address=$2
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fulldomain=$3
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if [ "" = "$omglol_address" ]; then
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_err "omg.lol base address not provided. Exiting"
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return 1
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fi
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if [ "" = "$omglol_apikey" ]; then
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_err "omg.lol API key not provided. Exiting"
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return 1
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fi
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_endswith "$fulldomain" "omg.lol"
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if [ ! $? ]; then
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_err "Domain name requested is not under omg.lol"
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return 1
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fi
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_endswith "$fulldomain" "$omglol_address.omg.lol"
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if [ ! $? ]; then
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_err "Domain name is not a subdomain of provided omg.lol address $omglol_address"
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return 1
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fi
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_debug "omglol_validate(): Required environment parameters are all present"
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}
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# Add (or modify) an entry for a new ACME query
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omglol_add() {
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address=$1
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authHeader=$2
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dnsName=$3
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txtvalue=$4
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_info " Creating DNS entry for $dnsName"
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_debug2 " omglol_add()"
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_debug2 " omg.lol Address: " "$address"
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_secure_debug2 " omg.lol authorization header: " "$authHeader"
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_debug2 " Full Domain name:" "$dnsName.$address.omg.lol"
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_debug2 " TXT value to set:" "$txtvalue"
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export _H1="$authHeader"
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endpoint="https://api.omg.lol/address/$address/dns"
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_debug2 " Endpoint" "$endpoint"
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payload='{"type": "TXT", "name":"'"$dnsName"'", "data":"'"$txtvalue"'", "ttl":30}'
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_debug2 " Payload" "$payload"
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response=$(_post "$payload" "$endpoint" "" "POST" "application/json")
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omglol_validate_add "$response" "$dnsName.$address" "$txtvalue"
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}
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omglol_validate_add() {
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response=$1
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name=$2
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content=$3
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_info " Validating DNS record addition"
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_debug2 " omglol_validate_add()"
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_debug2 " Response" "$response"
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_debug2 " DNS Name" "$name"
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_debug2 " DNS value" "$content"
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_jsonResponseCheck "$response" "success" "true"
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if [ "1" = "$?" ]; then
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_err "Response did not report success"
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return 1
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fi
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_jsonResponseCheck "$response" "message" "Your DNS record was created successfully."
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if [ "1" = "$?" ]; then
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_err "Response message did not indicate DNS record was successfully created"
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return 1
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fi
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_jsonResponseCheck "$response" "name" "$name"
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if [ "1" = "$?" ]; then
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_err "Response DNS Name did not match the response received"
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return 1
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fi
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_jsonResponseCheck "$response" "content" "$content"
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if [ "1" = "$?" ]; then
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_err "Response DNS Name did not match the response received"
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return 1
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fi
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_debug " Record Created successfully"
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return 0
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}
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omglol_getRecords() {
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address=$1
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authHeader=$2
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dnsName=$3
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txtValue=$4
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_debug2 " omglol_getRecords()"
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_debug2 " omg.lol Address: " "$address"
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_secure_debug2 " omg.lol Auth Header: " "$authHeader"
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_debug2 " omg.lol DNS name:" "$dnsName"
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_debug2 " txt Value" "$txtValue"
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export _H1="$authHeader"
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endpoint="https://api.omg.lol/address/$address/dns"
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_debug2 " Endpoint" "$endpoint"
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payload=$(_get "$endpoint")
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_debug2 " Received Payload:" "$payload"
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# Reformat the JSON to be more parseable
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recordID=$(echo "$payload" | _stripWhitespace)
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recordID=$(echo "$recordID" | _exposeJsonArray)
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# Now find the one with the right value, and caputre its ID
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recordID=$(echo "$recordID" | grep -- "$txtValue" | grep -i -- "$dnsName.$address")
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_getJsonElement "$recordID" "id"
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}
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omglol_delete() {
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address=$1
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authHeader=$2
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dnsName=$3
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txtValue=$4
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_info " Deleting DNS entry for $dnsName with value $txtValue"
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_debug2 " omglol_delete()"
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_debug2 " omg.lol Address: " "$address"
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_secure_debug2 " omg.lol Auth Header: " "$authHeader"
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_debug2 " Full Domain name:" "$dnsName.$address.omg.lol"
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_debug2 " txt Value" "$txtValue"
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record=$(omglol_getRecords "$address" "$authHeader" "$dnsName" "$txtvalue")
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endpoint="https://api.omg.lol/address/$address/dns/$record"
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_debug2 " Endpoint" "$endpoint"
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export _H1="$authHeader"
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output=$(_post "" "$endpoint" "" "DELETE")
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_debug2 " Response" "$output"
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omglol_validate_delete "$output"
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}
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# Validate the response on request to delete. Confirm stastus is success and
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# Message indicates deletion was successful
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# Input: Response - HTTP response received from delete request
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omglol_validate_delete() {
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response=$1
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_info " Validating DNS record deletion"
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_debug2 " omglol_validate_delete()"
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_debug " Response" "$response"
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_jsonResponseCheck "$output" "success" "true"
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if [ "1" = "$?" ]; then
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_err "Response did not report success"
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return 1
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fi
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_jsonResponseCheck "$output" "message" "OK, your DNS record has been deleted."
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if [ "1" = "$?" ]; then
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_err "Response message did not indicate DNS record was successfully deleted"
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return 1
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fi
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_info " Record deleted successfully"
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return 0
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}
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########## Utility Functions #####################################
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# All utility functions only log at debug3
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_jsonResponseCheck() {
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response=$1
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field=$2
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correct=$3
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correct=$(echo "$correct" | _lower_case)
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_debug3 " jsonResponseCheck()"
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_debug3 " Response to parse" "$response"
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_debug3 " Field to get response from" "$field"
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_debug3 " What is the correct response" "$correct"
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responseValue=$(_jsonGetLastResponse "$response" "$field")
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if [ "$responseValue" != "$correct" ]; then
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_debug3 " Expected: $correct"
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_debug3 " Actual: $responseValue"
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return 1
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else
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_debug3 " Matched: $responseValue"
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fi
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return 0
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}
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_jsonGetLastResponse() {
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response=$1
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field=$2
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_debug3 " jsonGetLastResponse()"
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_debug3 " Response provided" "$response"
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_debug3 " Field to get responses for" "$field"
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responseValue=$(echo "$response" | grep -- "\"$field\"" | cut -f2 -d":")
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_debug3 " Response lines found:" "$responseValue"
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responseValue=$(echo "$responseValue" | sed 's/^ //g' | sed 's/^"//g' | sed 's/\\"//g')
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responseValue=$(echo "$responseValue" | sed 's/,$//g' | sed 's/"$//g')
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responseValue=$(echo "$responseValue" | _lower_case)
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_debug3 " Responses found" "$responseValue"
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_debug3 " Response Selected" "$(echo "$responseValue" | tail -1)"
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echo "$responseValue" | tail -1
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}
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_stripWhitespace() {
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tr -d '\n' | tr -d '\r' | tr -d '\t' | sed -r 's/ +/ /g' | sed 's/\\"//g'
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}
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_exposeJsonArray() {
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sed -r 's/.*\[//g' | tr '}' '|' | tr '{' '|' | sed 's/|, |/|/g' | tr '|' '\n'
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}
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_getJsonElement() {
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content=$1
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field=$2
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# With a single JSON entry to parse, convert commas to newlines puts each element on
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# its own line - which then allows us to just grep teh name, remove the key, and
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# isolate the value
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output=$(echo "$content" | tr ',' '\n' | grep -- "\"$field\":" | sed 's/.*: //g')
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_debug3 " String before unquoting: $output"
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_unquoteString "$output"
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}
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_createAuthHeader() {
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apikey=$1
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authheader="Authorization: Bearer $apikey"
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_secure_debug2 " Authorization Header" "$authheader"
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echo "$authheader"
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}
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_getDnsRecordName() {
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fqdn=$1
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address=$2
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echo "$fqdn" | sed 's/\.omg\.lol//g' | sed 's/\.'"$address"'$//g'
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}
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_unquoteString() {
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output=$1
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quotes=0
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_startswith "$output" "\""
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if [ $? ]; then
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quotes=$((quotes + 1))
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fi
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_endswith "$output" "\""
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if [ $? ]; then
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quotes=$((quotes + 1))
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fi
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_debug3 " Original String: $output"
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_debug3 " Quotes found: $quotes"
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if [ $((quotes)) -gt 1 ]; then
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output=$(echo "$output" | sed 's/^"//g' | sed 's/"$//g')
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_debug3 " Quotes removed: $output"
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fi
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echo "$output"
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}
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