[Chrome Extension] Get auth.json of gphotosuploader

gphotosuploader is an unofficial Google Photos uploader written in Go. To upload photos/videos, an authentication file called auth.json must be created first. The auth.json contains cookies of Google Photos and your Google account id.

The day before yesterday I wrote a Chrome extension to get cookies of Google Photos [1], and yesterday I wrote another extension to get Google account id [2]. Now the two extensions are merged to create the content of auth.json of gphotosuploader. The following is complete source code.

manifest.json:

{
  "manifest_version": 2,

  "name": "gpauth",
  "description": "Get content of auth.json for gphotosuploader",
  "version": "0.1",

  "browser_action": {
    "default_title": "export gphotosuploader auth.json",
    "default_popup": "popup.html"
  },
  "permissions": [
    "cookies",
    "tabs",
    "<all_urls>"
  ]
}

popup.html:

<script src="popup.js"></script>

popup.js:

var auth = {
  "cookies": [],
  "persistantParameters": {
    "userId": ""
  }
};

chrome.tabs.query({
  active: true,
  currentWindow: true
}, function(tabs) {
  var tab = tabs[0];

  chrome.cookies.getAll({}, function (cookies) {

    var cookieNames = ["OTZ", "CONSENT", "SID", "APISID", "SAPISID", "HSID", "NID", "SSID"];
    var cookieDomains = [".google.com", "photos.google.com"];

    auth["cookies"].length = 0;
    for (var i in cookies) {

      var cookie = cookies[i];
      if (cookieNames.indexOf(cookie.name) == -1) {
        continue;
      }
      if (cookieDomains.indexOf(cookie.domain) == -1) {
        continue;
      }

      var cookieAuth = {};
      cookieAuth["Name"] = cookie.name;
      cookieAuth["Value"] = cookie.value;
      cookieAuth["Domain"] = cookie.domain;
      cookieAuth["HttpOnly"] = cookie.httpOnly;
      cookieAuth["Secure"] = cookie.secure;
      cookieAuth["Path"] = cookie.path;

      auth["cookies"].push(cookieAuth);

    }
    chrome.tabs.executeScript(null, {file: "getid.js"});

  });
});

chrome.runtime.onMessage.addListener(function(request, sender) {
  auth["persistantParameters"]["userId"] = request.id;
  document.write("<pre>");
  document.write(JSON.stringify(auth, null, 2));
  document.write("</pre>");
});

getid.js:

function find_WIZ_global_data(elm) {
  if (elm.nodeType == Node.ELEMENT_NODE || elm.nodeType == Node.DOCUMENT_NODE) {
    for (var i=0; i < elm.childNodes.length; i++) {
      // recursively call self
      find_WIZ_global_data(elm.childNodes[i]);
    }
  }

  if (elm.nodeType == Node.TEXT_NODE) {
    if (elm.nodeValue.startsWith("window.WIZ_global_data")) {
      var jsonString = elm.nodeValue.replace("window.WIZ_global_data = ", "");
      jsonString = jsonString.slice(0, -1);
      var wiz = JSON.parse(jsonString);
      chrome.runtime.sendMessage({id: wiz["S06Grb"]});
    }
  }
}

find_WIZ_global_data(document);

References:

[1]	[Chrome Extension] Get Authentication Cookies of gphotosuploader

[2]	[Chrome Extension] Get Google Account Id from Google Photos