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| const config = require("./config.js"); | |
| const dayjs = require("dayjs"); | |
| const utc = require("dayjs/plugin/utc"); | |
| const crypto = require("crypto"); | |
| // activate UTC plugin | |
| dayjs.extend(utc); | |
| function getClientIp(req) { | |
| return (req.headers["X-Forwarded-For"] || | |
| req.headers["x-forwarded-for"] || | |
| '').split(',')[0] || | |
| req.connection.remoteAddress; | |
| } | |
| function getOloServerAuthHeaders(req, proxyPath) { | |
| const oloId = config.OLO_CLIENT_ID; | |
| const oloSecret = config.OLO_SECRET; | |
| const contentType = req.headers["content-type"] || "application/json"; | |
| // RFC1123Pattern | |
| const timestamp = `${dayjs.utc().format("ddd, DD MMM YYYY HH:mm:ss")} GMT`; | |
| const hashedBody = crypto.createHash("sha256") | |
| .update(req.body || "") | |
| .digest("base64"); | |
| const signatureString = [ | |
| oloId, | |
| req.method, | |
| contentType, | |
| hashedBody, | |
| proxyPath, | |
| timestamp | |
| ].join("\n"); | |
| console.log(signatureString); | |
| const hmac = crypto.createHmac("sha256", oloSecret); | |
| const hashedSignature = hmac.update(signatureString).digest("base64"); | |
| return { | |
| "Content-Type": contentType, | |
| "Authorization": `OloSignature ${oloId}:${hashedSignature}`, | |
| "Date": timestamp, | |
| "X-Forwarded-For": getClientIp(req), | |
| "User-Agent": "Olo-Proxy", | |
| } | |
| } |
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