Chrome Cookie Implant

This is a Chrome extension that allows you to execute an HTTP GET request to add cookies to your Chrome profile. The request is made to a chrome-extension:// URL whose host is the the extension ID and whose query parameters contain URL-encoded JSON objects that contain the cookie data.

This is useful in web testing because the Chrome Extensions API for cookie management is more powerful than the WebDriver cookies API. See the Chrome cookies API for a list of properties a cookie can have.

The companion Java client library uses Selenium to make the GET request to implant cookies.

Maven

The Java client library (including the extension):

<dependency>
    <groupId>com.github.mike10004</groupId>
    <artifactId>chrome-cookie-implant</artifactId>
    <version>1.5.15</version>
</dependency>

If you want just the Chrome extension:

<dependency>
    <groupId>com.github.mike10004</groupId>
    <artifactId>chrome-cookie-implant</artifactId>
    <version>1.5.15</version>
    <type>crx</type>
</dependency>

Using the extension

You can use the provided Java client library to install the extension and implant cookies, or you can use the extension in any language by grabbing the CRX artifact, installing it, and making your own HTTP requests.

With the Java client library

import java.io.*;
import java.util.Collections;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import com.github.mike10004.chromecookieimplant.*;

// ...

File crxFile = File.createTempFile("chrome-cookie-implant", ".crx");
ChromeCookieImplanter implanter = new ChromeCookieImplanter();
try (OutputStream out = new FileOutputStream(crxFile)) {
    implanter.copyCrxTo(out);
}
ChromeOptions options = new ChromeOptions();
options.addExtensions(crxFile);
ChromeDriver driver = new ChromeDriver(options);
ChromeCookie cookie = ChromeCookie.builder("https://www.example.com/")
        .name("my_cookie_name")
        .value("my_cookie_value")
        .build();
CookieImplantResult result = implanter.implant(Collections.singleton(cookie), driver).get(0);
System.out.println(result);
driver.quit();

With Selenium in another language

You can grab the CRX artifact from the Maven repository and provide it to a webdriver in your preferred environment.

The src/test/js directory contains this NodeJS example using the Selenium JavaScript bindings. See package.json for a declaration of dependencies.

const {Builder, By, until} = require('selenium-webdriver');
require('chromedriver');
const crxData = require('fs').readFileSync('/path/to/chrome-cookie-implant.crx');
const crxBase64 = new Buffer(crxData).toString('base64');
const driver = new Builder()
    .forBrowser('chrome')
    .withCapabilities({
        'browserName': 'chrome',
        'chromeOptions': {
            extensions: [crxBase64]
        }
    }).build();

const cookie = {
    url: "https://www.example.com/",
    domain: ".www.example.com",
    path: "/",
    name: "my_cookie_name",
    value: "my_cookie_value",
    expirationDate: (new Date().getTime() / 1000) + (24 * 60 * 60) // expires tomorrow
};
const encodedCookieJson = encodeURIComponent(JSON.stringify(cookie));
const extensionId = "kaoadjmhchcekjlnhdmeennkgjeacdio";
const cookieImplantUrl = "chrome-extension://" + extensionId + "/manage.html?implant=" + encodedCookieJson;
driver.get(cookieImplantUrl);
driver.findElement(By.id('output'))
    .then(outputElement => driver.wait(until.elementTextContains(outputElement, 'all_implants_processed')))
    .then(outputElement => outputElement.getText())
    .then(text => {
        const output = JSON.parse(text);
        const implant = output.implants[0];
        console.log('success', implant.success);
        if (implant.success) {
            console.log('cookie', implant.savedCookie);
        }
        return implant.savedCookie;
    }).then(() => driver.quit());

The Java client library makes things a bit easier because the extension file is an embedded resource and you don't have to know the extension ID beforehand in order to construct the appropriate URL.

Acknowledgements

Icon by Adèle Foucart, CC 3.0 via The Noun Project.