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#!/usr/bin/env sh
# shellcheck disable=SC2034
dns_myapi_info='omg.lol
Based on the omg.lol API, defined at https://api.omg.lol/
Domains: omg.lol
Site: github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_duckdns
Options:
omg_apikey API Key from omg.lol. This is accesible from the bottom of the account page at https://home.omg.lol/account
omg_address This is your omg.lol address, without the preceding @ - you can see your list on your dashboard at https://home.omg.lol/dashboard
Issues: github.com/acmesh-official/acme.sh
Author: @Kholin <kholin+acme.omglolapi@omg.lol>
'
#returns 0 means success, otherwise error.
######## Public functions #####################
# Please Read this guide first: https://github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
#Usage: dns_myapi_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_omglol_add() {
fulldomain=$1
txtvalue=$2
omg_apikey="${omg_apikey:-$(_readaccountconf_mutable omg_apikey)}"
omg_address="${omg_address:-$(_readaccountconf_mutable omg_address)}"
# As omg.lol includes a leading @ for their addresses, pre-strip this before save
omg_address="$(echo "$omg_address" | tr -d '@')"
_saveaccountconf_mutable omg_apikey "$omg_apikey"
_saveaccountconf_mutable omg_address "$omg_address"
_info "Using omg.lol."
_debug "Function" "dns_omglol_add()"
_debug "Full Domain Name" "$fulldomain"
_debug "txt Record Value" "$txtvalue"
_secure_debug "omg.lol API key" "$omg_apikey"
_debug "omg.lol Address" "$omg_address"
omg_validate "$omg_apikey" "$omg_address" "$fulldomain"
if [ ! $? ]; then
return 1
fi
dnsName=$(_getDnsRecordName "$fulldomain" "$omg_address")
authHeader="$(_createAuthHeader "$omg_apikey")"
_debug2 "dns_omglol_add(): Address" "$dnsName"
omg_add "$omg_address" "$authHeader" "$dnsName" "$txtvalue"
}
#Usage: fulldomain txtvalue
#Remove the txt record after validation.
dns_omglol_rm() {
fulldomain=$1
txtvalue=$2
omg_apikey="${omg_apikey:-$(_readaccountconf_mutable omg_apikey)}"
omg_address="${omg_address:-$(_readaccountconf_mutable omg_address)}"
# As omg.lol includes a leading @ for their addresses, strip this in case provided
omg_address="$(echo "$omg_address" | tr -d '@')"
_info "Using omg.lol"
_debug "Function" "dns_omglol_rm()"
_debug "Full Domain Name" "$fulldomain"
_debug "txt Record Value" "$txtvalue"
_secure_debug "omg.lol API key" "$omg_apikey"
_debug "omg.lol Address" "$omg_address"
omg_validate "$omg_apikey" "$omg_address" "$fulldomain"
if [ ! $? ]; then
return 1
fi
dnsName=$(_getDnsRecordName "$fulldomain" "$omg_address")
authHeader="$(_createAuthHeader "$omg_apikey")"
omg_delete "$omg_address" "$authHeader" "$dnsName" "$txtvalue"
}
#################### Private functions below ##################################
# Check that the minimum requirements are present. Close ungracefully if not
omg_validate() {
omg_apikey=$1
omg_address=$2
fulldomain=$3
_debug2 "Function" "dns_validate()"
_secure_debug2 "omg.lol API key" "$omg_apikey"
_debug2 "omg.lol Address" "$omg_address"
_debug2 "Full Domain Name" "$fulldomain"
if [ "" = "$omg_address" ]; then
_err "omg.lol base address not provided. Exiting"
return 1
fi
if [ "" = "$omg_apikey" ]; then
_err "omg.lol API key not provided. Exiting"
return 1
fi
_endswith "$fulldomain" "omg.lol"
if [ ! $? ]; then
_err "Domain name requested is not under omg.lol"
return 1
fi
_endswith "$fulldomain" "$omg_address.omg.lol"
if [ ! $? ]; then
_err "Domain name is not a subdomain of provided omg.lol address $omg_address"
return 1
fi
_debug "Required environment parameters are all present"
}
# Add (or modify) an entry for a new ACME query
omg_add() {
address=$1
authHeader=$2
dnsName=$3
txtvalue=$4
_info "Creating DNS entry for $dnsName"
_debug2 "omg_add()"
_debug2 "omg.lol Address: " "$address"
_secure_debug2 "omg.lol authorization header: " "$authHeader"
_debug2 "Full Domain name:" "$dnsName.$address.omg.lol"
_debug2 "TXT value to set:" "$txtvalue"
export _H1="$authHeader"
endpoint="https://api.omg.lol/address/$address/dns"
_debug2 "Endpoint" "$endpoint"
payload='{"type": "TXT", "name":"'"$dnsName"'", "data":"'"$txtvalue"'", "ttl":30}'
_debug2 "Payload" "$payload"
response=$(_post "$payload" "$endpoint" "" "POST" "application/json")
omg_validate_add "$response" "$dnsName.$address" "$txtvalue"
}
omg_validate_add() {
response=$1
name=$2
content=$3
_debug "Validating DNS record addition"
_debug2 "omg_validate_add()"
_debug2 "Response" "$response"
_debug2 "DNS Name" "$name"
_debug2 "DNS value" "$content"
_jsonResponseCheck "$response" "success" "true"
if [ "1" = "$?" ]; then
_err "Response did not report success"
return 1
fi
_jsonResponseCheck "$response" "message" "Your DNS record was created successfully."
if [ "1" = "$?" ]; then
_err "Response message did not indicate DNS record was successfully created"
return 1
fi
_jsonResponseCheck "$response" "name" "$name"
if [ "1" = "$?" ]; then
_err "Response DNS Name did not match the response received"
return 1
fi
_jsonResponseCheck "$response" "content" "$content"
if [ "1" = "$?" ]; then
_err "Response DNS Name did not match the response received"
return 1
fi
_info "Record Created successfully"
return 0
}
omg_getRecords() {
address=$1
authHeader=$2
dnsName=$3
txtValue=$4
_debug2 "omg_getRecords()"
_debug2 "omg.lol Address: " "$address"
_secure_debug2 "omg.lol Auth Header: " "$authHeader"
_debug2 "omg.lol DNS name:" "$dnsName"
_debug2 "txt Value" "$txtValue"
export _H1="$authHeader"
endpoint="https://api.omg.lol/address/$address/dns"
_debug2 "Endpoint" "$endpoint"
payload=$(_get "$endpoint")
_debug2 "Received Payload:" "$payload"
# Reformat the JSON to be more parseable
recordID=$(echo "$payload" | _stripWhitespace)
recordID=$(echo "$recordID" | _exposeJsonArray)
# Now find the one with the right value, and caputre its ID
recordID=$(echo "$recordID" | grep -- "$txtValue" | grep -i -- "$dnsName.$address")
_getJsonElement "$recordID" "id"
}
omg_delete() {
address=$1
authHeader=$2
dnsName=$3
txtValue=$4
_info "Deleting DNS entry for $dnsName with value $txtValue"
_debug2 "omg_delete()"
_debug2 "omg.lol Address: " "$address"
_secure_debug2 "omg.lol Auth Header: " "$authHeader"
_debug2 "Full Domain name:" "$dnsName.$address.omg.lol"
_debug2 "txt Value" "$txtValue"
record=$(omg_getRecords "$address" "$authHeader" "$dnsName" "$txtvalue")
if [ "" = "$record" ]; then
_err "DNS record $address not found!"
return 1
fi
endpoint="https://api.omg.lol/address/$address/dns/$record"
_debug2 "Endpoint" "$endpoint"
export _H1="$authHeader"
output=$(_post "" "$endpoint" "" "DELETE")
_debug2 "Response" "$output"
omg_validate_delete "$output"
}
# Validate the response on request to delete. Confirm stastus is success and
# Message indicates deletion was successful
# Input: Response - HTTP response received from delete request
omg_validate_delete() {
response=$1
_info "Validating DNS record deletion"
_debug2 "omg_validate_delete()"
_debug2 "Response" "$response"
_jsonResponseCheck "$output" "success" "true"
if [ "1" = "$?" ]; then
_err "Response did not report success"
return 1
fi
_jsonResponseCheck "$output" "message" "OK, your DNS record has been deleted."
if [ "1" = "$?" ]; then
_err "Response message did not indicate DNS record was successfully deleted"
return 1
fi
_info "Record deleted successfully"
return 0
}
########## Utility Functions #####################################
# All utility functions only log at debug3
_jsonResponseCheck() {
response=$1
field=$2
correct=$3
correct=$(echo "$correct" | _lower_case)
_debug3 "jsonResponseCheck()"
_debug3 "Response to parse" "$response"
_debug3 "Field to get response from" "$field"
_debug3 "What is the correct response" "$correct"
responseValue=$(_jsonGetLastResponse "$response" "$field")
if [ "$responseValue" != "$correct" ]; then
_debug3 "Expected: $correct"
_debug3 "Actual: $responseValue"
return 1
else
_debug3 "Matched: $responseValue"
fi
return 0
}
_jsonGetLastResponse() {
response=$1
field=$2
_debug3 "jsonGetLastResponse()"
_debug3 "Response provided" "$response"
_debug3 "Field to get responses for" "$field"
responseValue=$(echo "$response" | grep -- "\"$field\"" | cut -f2 -d":")
_debug3 "Response lines found:" "$responseValue"
responseValue=$(echo "$responseValue" | sed 's/^ //g' | sed 's/^"//g' | sed 's/\\"//g')
responseValue=$(echo "$responseValue" | sed 's/,$//g' | sed 's/"$//g')
responseValue=$(echo "$responseValue" | _lower_case)
_debug3 "Responses found" "$responseValue"
_debug3 "Response Selected" "$(echo "$responseValue" | tail -1)"
echo "$responseValue" | tail -1
}
_stripWhitespace() {
tr -d '\n' | tr -d '\r' | tr -d '\t' | sed -r 's/ +/ /g' | sed 's/\\"//g'
}
_exposeJsonArray() {
sed -r 's/.*\[//g' | tr '}' '|' | tr '{' '|' | sed 's/|, |/|/g' | tr '|' '\n'
}
_getJsonElement() {
content=$1
field=$2
_debug3 "_getJsonElement()"
_debug3 "Input JSON element" "$content"
_debug3 "JSON element to isolate" "$field"
# With a single JSON entry to parse, convert commas to newlines puts each element on
# its own line - which then allows us to just grep teh name, remove the key, and
# isolate the value
output=$(echo "$content" | tr ',' '\n' | grep -- "\"$field\":" | sed 's/.*: //g')
_debug3 "String before unquoting: $output"
_unquoteString "$output"
}
_createAuthHeader() {
apikey=$1
_debug3 "_createAuthHeader()"
_secure_debug3 "Provided API Key" "$apikey"
authheader="Authorization: Bearer $apikey"
_secure_debug3 "Authorization Header" "$authheader"
echo "$authheader"
}
_getDnsRecordName() {
fqdn=$1
address=$2
_debug3 "_getDnsRecordName()"
_debug3 "FQDN" "$fqdn"
_debug3 "omg.lol Address" "$address"
echo "$fqdn" | sed 's/\.omg\.lol//g' | sed 's/\.'"$address"'$//g'
}
_unquoteString() {
output=$1
quotes=0
_debug3 "_unquoteString()"
_debug3 "Possibly quoted string" "$output"
_startswith "$output" "\""
if [ $? ]; then
quotes=$((quotes + 1))
fi
_endswith "$output" "\""
if [ $? ]; then
quotes=$((quotes + 1))
fi
_debug3 "Original String: $output"
_debug3 "Quotes found: $quotes"
if [ $((quotes)) -gt 1 ]; then
output=$(echo "$output" | sed 's/^"//g' | sed 's/"$//g')
_debug3 "Quotes removed: $output"
fi
echo "$output"
}