fakebrowser/dist/plugins/evasions/sourceurl/index.js

🤖 Fake fingerprints to bypass anti-bot systems. Simulate mouse and keyboard operations to make behavior like a real person.

'use strict';

const {PuppeteerExtraPlugin} = require('puppeteer-extra-plugin');

/**
 * Strip sourceURL from scripts injected by puppeteer.
 * It can be used to identify the presence of pptr via stacktraces.
 */
class Plugin extends PuppeteerExtraPlugin {
    constructor(opts = {}) {
        super(opts);
    }

    get name() {
        return 'evasions/sourceurl';
    }

    async onPageCreated(page) {
        if (!page || !page._client || !page._client.send) {
            this.debug('Warning, missing properties to intercept CDP.', {page});
            return;
        }

        // Intercept CDP commands and strip identifying and unnecessary sourceURL
        // https://github.com/puppeteer/puppeteer/blob/9b3005c105995cd267fdc7fb95b78aceab82cf0e/new-docs/puppeteer.cdpsession.md
        const debug = this.debug;
        page._client.send = (function (originalMethod, context) {
            return async function () {
                const [method, paramArgs] = arguments || [];
                const next = async () => {
                    try {
                        return await originalMethod.apply(context, [method, paramArgs]);
                    } catch (error) {
                        // This seems to happen sometimes when redirects cause other outstanding requests to be cut short
                        if (error instanceof Error && error.message.includes(`Protocol error (Network.getResponseBody): No resource with given identifier found`)) {
                            debug(`Caught and ignored an error about a missing network resource.`, {error});
                        } else {
                            throw error;
                        }
                    }
                };

                if (!method || !paramArgs) {
                    return next();
                }

                // To find the methods/props in question check `_evaluateInternal` at:
                // https://github.com/puppeteer/puppeteer/blob/main/src/common/ExecutionContext.ts#L186
                const methodsToPatch = {
                    'Runtime.evaluate': 'expression',
                    'Runtime.callFunctionOn': 'functionDeclaration',
                };

                const SOURCE_URL_SUFFIX =
                    '//# sourceURL=__puppeteer_evaluation_script__';

                if (!methodsToPatch[method] || !paramArgs[methodsToPatch[method]]) {
                    return next();
                }

                debug('Stripping sourceURL', {method});
                paramArgs[methodsToPatch[method]] = paramArgs[
                    methodsToPatch[method]
                    ].replace(SOURCE_URL_SUFFIX, '');

                return next();
            };
        })(page._client.send, page._client);
    }
}

module.exports = function (pluginConfig) {
    return new Plugin(pluginConfig);
};