@aikidosec/firewall/sinks/undici/parseHeaders.js

Zen by Aikido is an embedded Application Firewall that autonomously protects Node.js apps against common and critical attacks, provides rate limiting, detects malicious traffic (including bots), and more.

"use strict";
/*
 * Largely based on parseHeaders function from nodejs/unici
 * MIT License
 * Copyright (c) Matteo Collina and Undici contributors
 * https://github.com/nodejs/undici
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseHeaders = parseHeaders;
function parseHeaders(headers, obj) {
    if (obj === undefined)
        obj = {};
    for (let i = 0; i < headers.length; i += 2) {
        const key = headerNameToString(headers[i]);
        let val = obj[key];
        if (val) {
            if (typeof val === "string") {
                val = [val];
                obj[key] = val;
            }
            val.push(headers[i + 1].toString("utf8"));
        }
        else {
            const headersValue = headers[i + 1];
            if (typeof headersValue === "string") {
                obj[key] = headersValue;
            }
            else {
                obj[key] = Array.isArray(headersValue)
                    ? headersValue.map((x) => x.toString("utf8"))
                    : headersValue.toString("utf8");
            }
        }
    }
    // See https://github.com/nodejs/node/pull/46528
    if ("content-length" in obj && "content-disposition" in obj) {
        obj["content-disposition"] = Buffer.from(
        // @ts-expect-error Ignore
        obj["content-disposition"]).toString("latin1");
    }
    return obj;
}
function headerNameToString(value) {
    return typeof value === "string"
        ? value.toLowerCase()
        : value.toString("latin1").toLowerCase();
}