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Add Deluge widget
- Create semi-generic jsonrpc proxy handler - Refactor NZBGet to use jsonrpc proxy handler closes #190
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9 changed files with 217 additions and 42 deletions
82
src/utils/proxy/handlers/jsonrpc.js
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82
src/utils/proxy/handlers/jsonrpc.js
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import { JSONRPCClient, JSONRPCErrorException } from "json-rpc-2.0";
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import { formatApiCall } from "utils/proxy/api-helpers";
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import { httpProxy } from "utils/proxy/http";
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import getServiceWidget from "utils/config/service-helpers";
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import createLogger from "utils/logger";
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import widgets from "widgets/widgets";
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const logger = createLogger("jsonrpcProxyHandler");
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export async function sendJsonRpcRequest(url, method, params, username, password) {
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const headers = {
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"content-type": "application/json",
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"accept": "application/json"
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}
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if (username && password) {
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const authorization = Buffer.from(`${username}:${password}`).toString("base64");
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headers.authorization = `Basic ${authorization}`;
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}
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const client = new JSONRPCClient(async (rpcRequest) => {
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const httpRequestParams = {
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method: "POST",
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headers,
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body: JSON.stringify(rpcRequest)
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};
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// eslint-disable-next-line no-unused-vars
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const [status, contentType, data] = await httpProxy(url, httpRequestParams);
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const dataString = data.toString();
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if (status === 200) {
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const json = JSON.parse(dataString);
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// in order to get access to the underlying error object in the JSON response
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// you must set `result` equal to undefined
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if (json.error && (json.result === null)) {
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json.result = undefined;
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}
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return client.receive(json);
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}
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return Promise.reject(new Error(dataString));
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});
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try {
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const response = await client.request(method, params);
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return [200, "application/json", JSON.stringify(response)];
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}
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catch (e) {
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if (e instanceof JSONRPCErrorException) {
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return [200, "application/json", JSON.stringify({result: null, error: {code: e.code, message: e.message}})];
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}
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logger.warn("Error calling JSONPRC endpoint: %s. %s", url, e);
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return [500, "application/json", JSON.stringify({result: null, error: {code: 2, message: e.toString()}})];
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}
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}
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export default async function jsonrpcProxyHandler(req, res) {
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const { group, service, endpoint: method } = req.query;
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if (group && service) {
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const widget = await getServiceWidget(group, service);
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const api = widgets?.[widget.type]?.api;
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if (!api) {
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return res.status(403).json({ error: "Service does not support API calls" });
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}
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if (widget) {
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const url = formatApiCall(api, { ...widget });
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// eslint-disable-next-line no-unused-vars
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const [status, contentType, data] = await sendJsonRpcRequest(url, method, null, widget.username, widget.password);
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res.status(status).end(data);
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}
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}
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logger.debug("Invalid or missing proxy service type '%s' in group '%s'", service, group);
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return res.status(400).json({ error: "Invalid proxy service type" });
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}
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