IRKitの `POST /wifi` にリクエストする際の文字列を生成するスクリプト

script.js

// https://hakataminamiwebservice.hatenablog.com/entry/2022/12/13/155403

"use strict";
// Original Source Code: http://jsdo.it/mash/keyserializer-test
// MIT License

// This Source Code is transpiled from https://github.com/bouzuya/node-irkit/blob/master/src/irkit-device-key-serializer.ts typescript
// to javascript, and add a little change.

// CRC-8-Dallas/Maxim
function crc8n(u8, crcinit) {
    if (u8 < 0x00 || u8 > 0xFF) {
        throw new Error('only input less than 1byte as number');
    }
    var crc = crcinit ^ u8;
    for (var i = 0; i < 8; i++) {
        var poly = (crc & 0x80) === 0x80;
        crc = (crc << 1) ^ (poly ? 0x31 : 0x00); // 0x31 = X^8+X^5+X^4+X^0
    }
    return crc & 0xFF;
}
// tslint:enable
function crc8s(data, size, crcinit) {
    var crc = crcinit;
    for (var i = 0; i < size; i++) {
        var u8 = i < data.length ? data.charCodeAt(i) : 0x00; // 0 filled
        crc = crc8n(u8, crc);
    }
    return crc;
}
function hex(s) {
    var ret = '';
    for (var i = 0; i < s.length; i++) {
        ret += s.charCodeAt(i).toString(16).toUpperCase();
    }
    return ret;
}
function serializeSecurity(security) {
    return security.toString();
}
function serializeSSID(ssid) {
    return hex(ssid);
}
function serializePassword(password) {
    return hex(password);
}
function serializeWEPPassword(password) {
    return serializePassword(hex(password));
}
function serializeDevicekey(devicekey) {
    return devicekey;
}
var Security;
(function (Security) {
    Security[Security["NONE"] = 0] = "NONE";
    Security[Security["WEP"] = 2] = "WEP";
    Security[Security["WPA_WPA2"] = 8] = "WPA_WPA2";
})(Security || (Security = {}));

function serializeCRC(obj) {
    var crc = 0x00;
    crc = crc8n(obj.security, crc);
    crc = crc8s(obj.ssid, 33, crc);
    crc = crc8s(obj.password, 64, crc);
    crc = crc8n(1, crc); // wifi_is_set
    crc = crc8n(0, crc); // wifi_was_valid
    crc = crc8s(obj.devicekey, 33, crc);
    return crc.toString(16).toUpperCase();
}
function serialize(_a) {
    var devicekey = _a.devicekey, password = _a.password, security = _a.security, ssid = _a.ssid;
    return [
        serializeSecurity(security),
        serializeSSID(ssid),
        security === Security.WEP
            ? serializeWEPPassword(password)
            : serializePassword(password),
        serializeDevicekey(devicekey),
        '2',
        '',
        '',
        '',
        '',
        '',
        serializeCRC({
            devicekey: devicekey,
            password: password,
            security: security,
            ssid: ssid
        })
    ].join('/');
}

// ここに自分のwifi 設定を入力する
let obj = {
    devicekey: "", // ブランクでOK
    password: "", // home wifi passward (not IRKit wifi password)
    security: 8, // WPA_WPA2:8, WEP: 2
    ssid: "" // wifi ssid (not IRKit wifi ssid)
}
//

let serializedObj = serialize(obj);
console.log({ serializedObj });