allproxy/build/server/src/interceptors/browsers.js

AllProxy: MITM HTTP Debugging Tool.

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
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    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
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    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
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};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.launchBrowser = exports.getAvailableBrowsers = exports.checkBrowserConfig = void 0;
const path = __importStar(require("path"));
const util_1 = require("util");
const browser_launcher_1 = __importDefault(require("@httptoolkit/browser-launcher"));
const browser_launcher_2 = require("@httptoolkit/browser-launcher");
const promise_1 = require("./util/promise");
const error_1 = require("./util/error");
const fs_1 = require("./util/fs");
const getBrowserLauncher = (0, util_1.promisify)(browser_launcher_1.default);
const updateBrowserCache = (0, util_1.promisify)(browser_launcher_2.update);
const browserConfigPath = (configPath) => path.join(configPath, 'browsers.json');
function checkBrowserConfig(configPath) {
    return __awaiter(this, void 0, void 0, function* () {
        // It's not clear why, but sometimes the browser config can become corrupted, so it's not valid JSON
        // If that happens browser-launcher can hit issues. To avoid that entirely, we check it here on startup.
        const browserConfig = browserConfigPath(configPath);
        try {
            const rawConfig = yield (0, fs_1.readFile)(browserConfig, 'utf8');
            JSON.parse(rawConfig);
        }
        catch (error) {
            if ((0, error_1.isErrorLike)(error) && error.code === 'ENOENT')
                return;
            console.warn(`Failed to read browser config cache from ${browserConfig}, clearing.`, error);
            return (0, fs_1.deleteFile)(browserConfig).catch((err) => {
                // There may be possible races around here - as long as the file's gone, we're happy
                if ((0, error_1.isErrorLike)(err) && err.code === 'ENOENT')
                    return;
                console.error('Failed to clear broken config file:', err);
            });
        }
    });
}
exports.checkBrowserConfig = checkBrowserConfig;
let launcher;
function getLauncher(configPath) {
    const browserConfig = browserConfigPath(configPath);
    launcher = getBrowserLauncher(browserConfig);
    launcher.then(() => __awaiter(this, void 0, void 0, function* () {
        // Async after first creating the launcher, we trigger a background cache update.
        // This can be *synchronously* expensive (spawns 10s of procs, 10+ms sync per
        // spawn on unix-based OSs) so defer briefly.
        yield (0, promise_1.delay)(2000);
        try {
            yield updateBrowserCache(browserConfig);
            //console.log('Browser cache updated');
            // Need to reload the launcher after updating the cache:
            launcher = getBrowserLauncher(browserConfig);
        }
        catch (e) {
            console.error(e);
        }
    }));
    // Reset & retry if this fails somehow:
    launcher.catch((e) => {
        console.error(e);
        launcher = undefined;
    });
    return launcher;
}
const getAvailableBrowsers = (configPath) => __awaiter(void 0, void 0, void 0, function* () {
    return (yield getLauncher(configPath)).browsers;
});
exports.getAvailableBrowsers = getAvailableBrowsers;
const launchBrowser = (url, options, configPath) => __awaiter(void 0, void 0, void 0, function* () {
    const launcher = yield getLauncher(configPath);
    const browserInstance = yield (0, util_1.promisify)(launcher)(url, options);
    browserInstance.process.on('error', (e) => {
        // If nothing else is listening for this error, this acts as default
        // fallback error handling: log & report & don't crash.
        if (browserInstance.process.listenerCount('error') === 1) {
            console.error('Browser launch error');
            console.error(e);
        }
    });
    return browserInstance;
});
exports.launchBrowser = launchBrowser;
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