Lets say, one visited a Website, which loaded a js-module.
This module loaded some information into a form and the chrome browser displayed it.
Is it anyhow possible to restore this information (i.e. via the browser cache) and view it?
What I've tried so far:
View Source of Web-Page in Chrome, but i did not record the communication, so no data here
installed "ChromeCacheView v2.21 - Cache viewer for Google Chrome Web browser" and viewed the Files with Dates which correspond to the concerning session time
Regarding the second point: I can only view the js-files unfortunately.
Yes, but it depends on what device you are on. If you are on the computer, go into your google history and find the website you need. Then, you can copy the link and save it somewhere else.
Also, if you don't know how to get into your history, click control h.
Related
I want to create a web app(for practicing my skills) that will help in conducting online exams. So I want to ask that is there any way to find out the following things---
Is there another page opened in the chrome (if yes then which)
Is there is another application running in the background (if yes then which)
Is user switching between tabs/applications/desktops etc.
Basically, I just want to create an app that just keeps track of users' activity when the user is giving an exam.
And if you have any of the solutions to the above problems then please tell.
Since most things you want to access are considered private data, it is not directly possible in a Web App, except the page visibility. But you can write a browser extension, which is at least allowed to access data within the browser. For information beyond the browser you should consider a native application or some embedded solution like React Native, Xamarin, or Electron, to name a few.
To get the info if the user is currently using the tab your Web App is running in, use the Page Visibility API:
https://developer.mozilla.org/en-US/docs/Web/API/Page_Visibility_API
For accessing information about other tabs and browser internal stuff, write an extension:
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API
I have created a playground application. I see that it creates shortcut files in my google drive. I tried to share it with incognito (because I want the doc to be available to anybody and do not know how to create another google account, so I log out into incognito). The shared link looks like https://drive.google.com/open?id=0B00--A0eRH1JLTdsX2t0LWw5RE0. But, incognito fails to view it. It says that "No preview avaialable" in what is supposed to be its google drive window and offers the log in
The key problem that I see is that playground application has the following structure, which comes from the official demo
function onAuthorized() {
function onFileLoaded(doc) {display(doc)}
gapi.drive.realtime.load(your_doc_id, onFileLoaded)
}
// App entry point -- start by authorization
gapi.auth.authorize({
client_id: rtClientId, scope: ['install', 'file'],
//user_id: userId,
immediate: !popup }, onAuthorized
);
which seems to demand authentication in the first place before displaying any doc. Authorization is problematic for the unsigned mode that I want my app to be available. I want to share a file and make it viewable to the general public, without the need to log in. This raises a question if incognito users are able to view or event edit my document. I also concern how to copy the doc to their account if desired: one thing is when you have created a file on your drive with my app, you can probably list the files and use drive.copy api to copy desired one and other thing when you want to copy a file that is not available on your google drive and the only thing you have is its id.
BTW, can you tell me which account to use for non-incognito testing from another account? If I create the document in one account I want to see how it looks/accessible from the another.
The Realtime API does not provide anonymous access by default. See https://developers.google.com/google-apps/realtime/faq#does_the_realtime_api_support_anonymous_access
"BTW, can you tell me which account to use for non-incognito testing from another account? If I create the document in one account I want to see how it looks/accessible from the another."
Use Chrome for one account. Use Firefox and other browsers for succeeding accounts.
Additional note:
Just so you have a clear understanding what Incognito is all about. What it can and cannot do so you don't mix things up.
How incognito mode works
What you view
Incognito is a mode that opens a new window where you can browse the
Internet in private without Chrome saving the sites you visit. You can
switch between an incognito window and any regular Chrome browsing
windows you have open. You'll only be in incognito mode when you're
using the incognito window.
Be careful. Incognito mode only prevents Chrome from saving your site
visit activity. It won't stop other sources from seeing your browsing
activity, including:
Your internet service provider Your employer (if you're using a work
computer) The websites you visit themselves What you've downloaded
Chrome won’t save a record of the files you download in incognito
mode. However, the downloaded files will be saved to your computer’s
Downloads folder, where you and any other users of your computer can
see and open them, even after you close your incognito tabs.
I recently made Google Chrome my default browser (mainly due to its bookmark and preferences syncing capabilities across multiple systems).
One thing I find increasingly annoying with it though is, that Chrome does not allow to directly open a downloaded file in an appropriate application!
In IE I was us to, that, when I clicked onto a link pointing to some document, e.g. a spreadsheet, to being asked, whether I wanted to save this document to a local file or to directly open it (in Excel in this example). This worked with all kinds of registered applications but also other formats, e.g. email addresses (mailto:-links) or Calendar entries (.ics-files) which directly opened Outlook's new email dialog with the email-address already filled int or created a new calendar entry from the .ics file, resp.
In Chrome one can only save such docs to a local file and then needs to locate that and has to open it manually. I find this always most cumbersome! Is there some plugin that allows to bring back the convenience I was used to?
And to spare me the usual comments on such feature requests right away: Yes, I am aware, that this is a potential security issue, if one opens docs from dubious sources, etc. I know, that one needs to understand what one is doing in such situations, but I think I do!
Click the little arrow beside the file, which is being downloaded and choose Always open files of this type. That will make it open automatically in the program the file type has been associated with in Windows after it finishes downloading.
I'd like to try my hand at some Chrome Extension Development. The most I have done with extensions is writing some small Greasemonkey scripts in the past.
I would like to use localStorage to store some data and then reveal the data on a extension button click later on. (Its seems like this would be done with a popup page)
How do I run a script everytime a page from lets say http://www.facebook.com/* is loaded?
How do I get access to the page? I think based off my localStorage requirement I would have to go down the background_page route (correct?) Can the background page and popup page communicate across the localStorage?
UPDATE:
I'm actually looking to learn the "Chrome way". I'm not really looking to run an existing Greasemonkey script
Google actually has some pretty good documentation on creating extensions. I recommend thoroughly reading the following two articles if you haven't already done so:
http://code.google.com/chrome/extensions/getstarted.html
http://code.google.com/chrome/extensions/overview.html
If you want to give your extension access when the user browses to Facebook, you'll need to declare that in the extension's manifest.
Unless you're wanting to save data beyond the life of the browser process, you probably don't need to use local storage. In-memory data can just be stored as part of the background page.
Content scripts (which run when you load a page) and background pages (which exist for the duration of the browser process) can communicate via message passing, which is described here:
http://code.google.com/chrome/extensions/messaging.html
Overall, I'd suggest spending some time browsing the Developer's Guide and becoming familiar with the concepts and examples.
Chrome has a feature to automatically convert greasemonkey scripts to extensions!
I spent the day debugging my website, because I seem to be getting randomly logged out, but just on Chrome on Android.
After reviewing the server logs, I see requests from my Android tablets IP hitting my server for links that I never clicked on. After some experimentation I see every couple of links I click, Chrome will fetch another link at random in the page that was not clicked.
The issue is that there is an a link in the page with an href="logout" which will sign in, and Chrome calls this all on its own, disconnecting the session. I suppose if I changed the link to call a POST operation Google would not fetch it, but I can't see why Google would be fetching links that were not clicked.
This is very odd, and does not occur on Firefox, or Chrome on Windows.
Not sure if this is some sort of virus on the tablet, or some thing Google is doing to check the content of pages that it would not have access to without the session.
I have seen Google do this before, but only when there were Google ads in the page, then Google would fetch the links twice so that it could get the page content to choose the ad. This seems a huge privacy issue, as Chrome is fetching private data from the session.
So the issue is that Chrome is using a new feature "prefetching".
This is a "feature" that will have Chrome randomly fetch any linked URL from the page.
This seems like a very error prone "feature" for Chrome to enable by default. Seems like it could give the user cached or stale data, or change the server's state causing obscure difficult to debug issues. This will also use double the amount of the user's data (and server's CPU), which you would think would not be desirable to most users that pay for their data.
I confirmed this by disabling the feature in Chrome.
My solution was to switch the logout call to use a POST through a element.
See, https://www.technipages.com/google-chrome-prefetch