I am developing a Facebook WPF application for my senior design project in college. I've never coded in C# or developed a WPF application before this. Right now I'm trying to implement logout functionality. I'm using a WebBrowser to do this, and the documentation seems to say that the method of doing this is to navigate to:
https://www.facebook.com/logout.php?next={redirectURI}&access_token={token}
in the browser, where the sections in curly braces are variables. For some reason, it brings me back to the Facebook home page (news feed) every time I do this. Is this due to a change made by Facebook in recent years or is there an error on my part? Alternative methods of logging out via a web browser, such as an alternative logout URL, would be appreciated as well.
With FB SDK V6, there are some nuances. I'll delve into a few things you need to verify in your code. Your code probably would've worked with previously, but today you should make the following changes, assuming you haven't already:
The redirectURI in your code needs to be changed to "http://www.facebook.com". Standard redirect URIs (including those associated with your access token generation) don't seem to work anymore.
You also need to make sure your redirectURI is an absolute URI. There is a very simple way to do this, which I will show in the code below.
Bringing it together, this code will work for the current FB C# SDK via a WebBrowser:
var fb = new FacebookClient();
var logoutURL = fb.GetLogoutUrl(new { access_token = {userAccessToken}, next = "https://www.facebook.com/"});
WebBrowser1.Navigate(logoutURL.AbsoluteUri);
A final note is that in my code, I chose to ask for the logoutURL instead of hardcoding it. It looks like after making the changes your logoutURL would still be correct, but it may be beneficial to retrieve the url to help ensure correctness. Good luck on your project.
Related
I've been trying for days on this and think that the issue is somewhere with my developer account but thought I'd ask for advice here first before digging in there.
I have followed the documentation and multiple tutorials and this should work it seems but no matter what call I make using Tweetinvi to Twitter I get "Forbidden" which when looking at the twitter codes means my authorization is correct but that I am asking for something that I don't have access to, but I am just trying to send a test tweet to see if the program works, which according to Twitter's documentation I should have full access to. Here's the code that I took from Tweetinvi's Tutorial on how to make a "Hello World" tweet but it just doesn't work cuz it returns "Forbidden".
static async Task Main(string[] args)
{
var userClient = new TwitterClient("APIKey", "sAPIKey", "AccessToken", "sAccessToken");
var tweet = await userClient.Tweets.PublishTweetAsync("This is a test tweet");
Console.WriteLine(tweet);
}
It's not just the send tweet function either, if I try to pull any information at all it says it's forbidden so I feel the issue is on Twitter side not my code but I am just trying to learn it as a hobby and have no idea. Just was told Tweetinvi would make everything take 5 minutes and now I am at three days of trying to figure this out. Any help in figuring this out would be nice and greatly appreciated.
Twitter's latest API release [Nov 15th 2021] has an entry level of access called "Essential" that provides access to the v2 API, because this should be the base for most new apps. If you need access to v2 and also to the legacy v1.1 APIs in the same app, you will need "Elevated" access, which is also available for free. The PublishTweetAsync method you are calling in the code in this question is trying to hit the v1.1 Tweet statuses/update endpoint, so your app will need Elevated access in order to make it work.
I am trying to setup a social login for my site.
Here is what I did:
I created credentials on google and have both ClientID and Secret
In default MVC app, in App_Start Startup.Auth.cs I uncommented
app.UseGoogleAuthentication()* method, so it looks like this:
Build solution!
Made sure authorized JavaScript origins and Redirect url are correct. And other things that are needed on console.cloud.google.com are done. Including activation of Google+ API
Eventually Google authentication button should appear in _ExternalLoginsListPartial partial view. But as I can see I have 0 login providers still. And not sure why, and what can I do about it?
var loginProviders = Context.GetOwinContext().Authentication.GetExternalAuthenticationTypes();
//loginProviders.Count() here returns 0
Tried researching, but most are saying that you forgot to build, or restart the server. Tried that but nothing changed.
As last resort, I tried following a tutorial https://youtu.be/WsRyvWvo4EI?t=9m47s
I did everything as shown there, I should be able to reach api/Account/ExternalLogins?returnUrl=%2F&generateState=true url, and receive callback URL from Google.
But I got stuck with same HTTP404 error at 9:50
To answer my question, everything turns out to be fine.
All I had to do was just to give it some time.
After couple of hours, Google provider appeared on the page.
For future readers - if met with 404 in this case, another possibility is an active filtering rule against query strings in IIS. One of the commonly copy-pasted rules aiming to block SQL injection requests scans the query string for open (to catch OPEN cursor). Your OAuth request probably contains this word in the scopes section (data you want to pull from the Google profile)
IIS -> Request Filtering
Switch to the tab "Rules"
Inspect and remove any suspicious active filters there
I am new to Trello.Net and struggling a little with authorisation. I understand the process, of requesting a URL and then asking the user to browse to that URL to get a token.
The first problem is I am trying to write a process which runs automatically without any UI. So I'm having to use a hard coded token, which I obtained by running this code to get a URL, which I then browse to manually. I would rather do this part automatically (get the resulting token programatically, not by having the user browse somewhere):
ITrello trello = new Trello(Key);
var url = trello.GetAuthorizationUrl("TrelloCapture", Scope.ReadWrite, Expiration.Never);
Console.WriteLine(url);
This URL, when I browse to it, displays for me a token which, for now, I hardcoded into my application as follows:
var token = "[the token copied and pasted from the web page]"
I then authorise using:
trello.Authorize(token);
Which seems to work fine. Next I want to access some basic data, and this is where my second problem comes in.
// Get the authenticated member
Member me = trello.Members.Me();
Console.WriteLine(me.FullName);
Members.Me() returns null every time. The same problem with Cards.ForMe() and other methods. Everything is null. Why?
What am I doing wrong?
I found the answer. I fixed it by getting the latest versions of these NuGet packages in my solution:
Trello.Net
JSON.Net
RestSharp
After getting those latest versions I was seeing proper values instead of null in the trello objects.
Hope this helps somebody who reads this.
Had the same problem, above answer helped me.
Though I couldn't get the latest but had to use:
"RestSharp" version="104.1
"Newtonsoft.Json" version="6.0.1"
Since The nuget also doesn't have the correct color enum i had to download the project and make my own changes.
Okay I know c# got a vast and very ease to use application development programs but this is what i want to learn now.So when user opens his browser and enters some url in it. Is it possible to send this data or the entered url addressto some other code one such a c# code or some other example c++ which is located on his hard drive.
To be simple when user clicks some link on a webpage or enters some url or closes the browser or when he opens the web browser, Can we detect all his actions that he perform on web browser through c# code or anyother way(I guess add-on or pluins the way it works) but Is it possible to send his actions to c# code and program it and give certain output back to browser so that browser performs it and outputs to user.
Something like browser-->c#code-->website.. I want c# code to act between the browser and webpages.
work I tried so far
I started googling on this and learnt little about how browsers work but still unable to find the solution. However I guess plugins are the way to do such tasks and found firebreath cross platform,a way to develop plugins for browsers. So is this possible by plugins? if so could you suggest me some good tools to develop my own plugins. Thanks
There are several options depending on what you want to achieve:
Proxy
You could implement a http proxy and configure the browser to use that proxy. The proxy sees all traffic and can do whatever it wants... this works rather "browser-agnostic". See the links here and here.
PlugIn
You could implement a plugin... alhtough this a browser-specific... for example IE used to have BHOs to this kind of stuff (not sure whether this is still possible with IE10...). Some options can be found here, here, here, here and here.
You can use FiddlerCore for this
Fiddler.FiddlerApplication.BeforeRequest += sess =>
{
Console.WriteLine("REQUEST TO : " + sess.fullUrl);
sess.bBufferResponse = true;
};
Fiddler.FiddlerApplication.Startup(8877, true, true);
Console.ReadLine();
Fiddler.FiddlerApplication.Shutdown();
System.Threading.Thread.Sleep(750);
After running this code, open your browser and navigate to any page.
I'm sorry if this subject has already been answered, but I couldn't find what I needed (yet).
I'm working on a program that downloads files from university websites that use the same infrastructure. It's an open source project which I'm trying to support in my free time
(hosted in goodle code: http://code.google.com/p/highlearner/)
Until now we used GET and POST requests to login into the right page and download stuff. But the universities keep changing their websites and every little change requires teaking in Highlearner, which requires a new version, auto-updating all users, etc. Also, every university has its own login page, requiring me to tailor a login sequences..
So I'm looking for a more robust solution. Instead of manually redirecting and setting the HTTP parameters. Is there some kind of mini browser that supports with HTML + Javascript? No GUI is needed, I just need the engine.
This way, I will simply need to fill out the form parameters and let the browser do the work.
Thanks,
Nitay
You could try to automate the process with WatiN library . It allows you to click buttons, submit forms, etc.
using (var ie = new IE(loginUrl))
{
if (ie.TextField("username").Exists
&& ie.TextField("password").Exists)
{
ie.TextField("username").Value = "username";
ie.TextField("password").Value = "password";
ie.Button(Find.ByName("submit")).Click();
}
}