Develop Reference

Google Ads Api Console Application

I want to develop a console application that pulls all campaigns under adwords accounts using Google Ads Api.
But I could not pass the authentication step.
I do not fully understand whether I should use the Service Account or Desktop Application Flow for this process.
GoogleAdsConfig config = new GoogleAdsConfig()
{
DeveloperToken = "Dev_token",
OAuth2Mode = Google.Ads.GoogleAds.Config.OAuth2Flow.APPLICATION,
OAuth2ClientId = "client_Id",
OAuth2ClientSecret = "secrret",
OAuth2RefreshToken = " refresh_token",
};
GoogleAdsClient client = new GoogleAdsClient(config);
GoogleAdsServiceClient googleAdsService = client.GetService(Google.Ads.GoogleAds.Services.V10.GoogleAdsService);
googleAdsService.SearchStream(AdwordsClientId, query,
delegate (SearchGoogleAdsStreamResponse resp)
{
foreach (GoogleAdsRow adsRow in resp.Results)
{
}
}
);
When I try as above, I get the following error
Google.Apis.Auth.OAuth2.Responses.TokenResponseException: Error:"unauthorized_client", Description:"Unauthorized", Uri:""
What paths should i follow?
Thank you.

unauthorized_client could have a couple of reasons. The most important ones that come to mind:
Did you make sure that your client ID and client secret match?
Have you activated the Google Ads API for the GCP project whose OAuth2 client you are using?

How to get Google+ profile picture on login in ASP.NET MVC

I'm working on a ASP.NET MVC 5 with Entity Framework (version 6.0) application.
I have added the simple google login, that saves the google email with the user on registration. How do I also get the profile picture of the Google+ user when they login and cast it in a view?

Google Plus API for developers allows you to fetch public data from Google+.
Followed by detail tutorial of all the necessary steps one need to perform to successfully fetch public data from Google+.
Google implies a limit to the usage of Google+ API - Each developer has a quota. We will see about that when we will discuss Google API console.
Google uses OAuth2.0 protocol to authorize your application when it tries to access user data.
It mostly uses standard HTTP method by means of RESTful API design to fetch and manipulate user data.
Google uses JSON Data Format to represent the resources in the API.
Step1: Generate an API key through Google API Console.
Step2: used GoogleOAuth2AuthenticationOptions which means you'll need to set
up a project at https://console.developers.google.com/project first to get a ClientId and ClientSecret.
At that link (https://console.developers.google.com/project), create a project and then select it.
Then on the left side menu, click on "APIs & auth".
Under "APIs", ensure you have "Google+ API" set to "On".
Then click on "Credentials" (in the left side menu).
Then click on the button "Create new Client ID".
Follow the instructions and you will then be provided with a ClientId and ClientSecret, take note of both.
var googleOptions = new GoogleOAuth2AuthenticationOptions()
{
ClientId = [INSERT CLIENT ID HERE],
ClientSecret = [INSERT CLIENT SECRET HERE],
Provider = new GoogleOAuth2AuthenticationProvider()
{
OnAuthenticated = (context) =>
{
context.Identity.AddClaim(new Claim("urn:google:name", context.Identity.FindFirstValue(ClaimTypes.Name)));
context.Identity.AddClaim(new Claim("urn:google:email", context.Identity.FindFirstValue(ClaimTypes.Email)));
//This following line is need to retrieve the profile image
context.Identity.AddClaim(new System.Security.Claims.Claim("urn:google:accesstoken", context.AccessToken, ClaimValueTypes.String, "Google"));
return Task.FromResult(0);
}
}
};
app.UseGoogleAuthentication(googleOptions);
//get access token to use in profile image request
var accessToken = loginInfo.ExternalIdentity.Claims.Where(c => c.Type.Equals("urn:google:accesstoken")).Select(c => c.Value).FirstOrDefault();
Uri apiRequestUri = new Uri("https://www.googleapis.com/oauth2/v2/userinfo?access_token=" + accessToken);
//request profile image
using (var webClient = new System.Net.WebClient())
{
var json = webClient.DownloadString(apiRequestUri);
dynamic result = JsonConvert.DeserializeObject(json);
userPicture = result.picture;
}
OR
var info = await signInManager.GetExternalLoginInfoAsync();
var picture = info.ExternalPrincipal.FindFirstValue("pictureUrl");
ExternalLoginCallback method I check for which login provider is being used and handle the data for Google login.
Go through the link to get more information.
https://developers.google.com/identity/protocols/OAuth2
I have tried it its working.

Azure AD B2C user info Xamarin

Hello I am trying to get user info like name and address in an Xamarin app using Azure AD B2C for authentication.
So far I've gotten the authentication working fine
public async Task<MobileServiceUser> LoginAsync(MobileServiceClient client, MobileServiceAuthenticationProvider provider)
{
try
{
//login and save user status
var user = await client.LoginAsync(Forms.Context, provider);
Settings.AuthToken = user?.MobileServiceAuthenticationToken ?? string.Empty;
Settings.UserId = user?.UserId ?? string.Empty;
return user;
}
catch (Exception e)
{
}
return null;
}
However I would like to know how to get the user's name and birthday. I haven't been able to find a clear course of action for that.

You do not explicitly get this information using the MobileService SDK. Check out the complete documentation about App Service Authentication/Authorization here.
You will reach the point where it mentions:
Your application can also obtain additional user details through an
HTTP GET on the /.auth/me endpoint of your application. A valid token
that's included with the request will return a JSON payload with
details about the provider that's being used, the underlying provider
token, and some other user information. The Mobile Apps server SDKs
provide helper methods to work with this data.
So, in your Xamarin, after the user is successfully authentication, you have to explicitly make a HTTP GET request to /.auth/me and parse the result to get all information about the logged-in user.
Not sure how to do this in Xamarin, but here is how to do it in C# UWP (Universal Windows Platform):
var url = App.MobileService.MobileAppUri + "/.auth/me";
var clent = new Windows.Web.Http.HttpClient();
clent.DefaultRequestHeaders.Add("X-ZUMO-AUTH", this.user.MobileServiceAuthenticationToken);
var userData = await clent.GetAsync(new Uri(url));
at the of this code execution, the userData varibale will be a JSON srting with all user's claims.

Evernote AuthToken via OAuth

I have worked with OAuth before (working with Twitter and PHP) and it was simple. I am trying to get OAuth to work with the EverNote API sample https://github.com/evernote/evernote-sdk-csharp (because, as they say, "Real applications authenticate with Evernote using OAuth"). I looked at these:
Simple C# Evernote API OAuth example or guide?
https://github.com/sethhitch/csharp-oauth-sample
http://blog.stevienova.com/2008/04/19/oauth-getting-started-with-oauth-in-c-net/
But, I still don't know how to do this... This is my code:
// Real applications authenticate with Evernote using OAuth, but for the
// purpose of exploring the API, you can get a developer token that allows
// you to access your own Evernote account. To get a developer token, visit
// https://sandbox.evernote.com/api/DeveloperToken.action
String authToken = "myAuthCode";
if (authToken == "your developer token") {
Console.WriteLine("Please fill in your developer token");
Console.WriteLine("To get a developer token, visit https://sandbox.evernote.com/api/DeveloperToken.action");
return;
}
How can I add OAuth to this to get my authToken?
Thank you.

Check this sample project : http://discussion.evernote.com/topic/30584-here-is-a-net-oauth-assembly/ . I think this will help you to understand how oauth works.

For anyone trying to get this to work in MVC, I was playing around with Evernote, OpenAuth and C# this morning and managed to get it all working. I have put together a blog post / library explaining the experience and outlining how to do it with MVC here - http://www.shaunmccarthy.com/evernote-oauth-csharp/ - it uses the AsyncOAuth library: https://github.com/neuecc/AsyncOAuth
I wrote a wrapper around AsyncOAuth that you might find useful here: https://github.com/shaunmccarthy/AsyncOAuth.Evernote.Simple
One prickly thing to be aware of - the Evernote Endpoints (/oauth and /OAuth.action) are case sensitive
// Download the library from https://github.com/shaunmccarthy/AsyncOAuth.Evernote.Simple
// Configure the Authorizer with the URL of the Evernote service,
// your key, and your secret.
var EvernoteAuthorizer = new EvernoteAuthorizer(
"https://sandbox.evernote.com",
"slyrp-1234", // Not my real id / secret :)
"7acafe123456badb123");
// First of all, get a request token from Evernote - this causes a
// webrequest from your server to Evernote.
// The callBackUrl is the URL you want the user to return to once
// they validate the app
var requestToken = EvernoteAuthorizer.GetRequestToken(callBackUrl);
// Persist this token, as we are going to redirect the user to
// Evernote to Authorize this app
Session["RequestToken"] = requestToken;
// Generate the Evernote URL that we will redirect the user to in
// order to
var callForwardUrl = EvernoteAuthorizer.BuildAuthorizeUrl(requestToken);
// Redirect the user (e.g. MVC)
return Redirect(callForwardUrl);
// ... Once the user authroizes the app, they get redirected to callBackUrl
// where we parse the request parameter oauth_validator and finally get
// our credentials
// null = they didn't authorize us
var credentials = EvernoteAuthorizer.ParseAccessToken(
Request.QueryString["oauth_verifier"],
Session["RequestToken"] as RequestToken);
// Example of how to use the credential with Evernote SDK
var noteStoreUrl = EvernoteCredentials.NotebookUrl;
var noteStoreTransport = new THttpClient(new Uri(noteStoreUrl));
var noteStoreProtocol = new TBinaryProtocol(noteStoreTransport);
var noteStore = new NoteStore.Client(noteStoreProtocol);
List<Notebook> notebooks = client.listNotebooks(EvernoteCredentials.AuthToken);

You can also try the OAuth library found here : https://code.google.com/p/devdefined-tools/wiki/OAuth and follow the steps mentioned here.

The simple code to add is:
EvernoteOAuth oauth = new EvernoteOAuth(EvernoteOAuth.HostService.Sandbox, myConsumerKey, myConsumerSecret);
string errResponse = oauth.Authorize();
if (errResponse.Length == 0)
{
Console.WriteLine(string.Format("Token: {0}\r\n\r\nExpires: {1}\r\n\r\nNoteStoreUrl: {2}\r\n\r\nUserId: {3}\r\n\r\nWebApiUrlPrefix: {4}", oauth.Token, oauth.Expires, oauth.NoteStoreUrl, oauth.UserId, oauth.WebApiUrlPrefix));
}
else
{
Console.WriteLine("A problem has occurred in attempting to authorize the use of your Evernote account: " + errResponse);
}
You will need to use this assembly:
using EvernoteOAuthNet;
Available here:
http://www32.zippyshare.com/v/98249023/file.html

C# Facebook SDK - How to use web forms to server side authorize canvas application

There are lots of sample applications in MVC but the current project I'm working on requires that I use web forms.
I can authorize the application using the javascript method but I want to use server side. Below is what I started with on the page.load
dynamic parameters = new ExpandoObject();
parameters.client_id = AppId;
parameters.client_secret = appSecret;
parameters.response_type = "code";
//parameters.state = state;
parameters.redirect_uri = "http://fb.local/page.aspx";
// The requested response: an access token (token), an authorization code (code), or both (code token).
parameters.response_type = "token";
// list of additional display modes can be found at http://developers.facebook.com/docs/reference/dialogs/#display
//parameters.display = "popup";
// add the 'scope' parameter only if we have extendedPermissions.
if (!string.IsNullOrWhiteSpace(ExtendedPermissions))
parameters.scope = ExtendedPermissions;
// generate the login url
var fb = new FacebookClient();
var loginUrl = fb.GetLoginUrl(parameters);
Response.Redirect(loginUrl.AbsoluteUri, true);
I can authorize but I'm not able to get the access token from the URL.
On the next page I can view source and see the access token in the url bar but I'm not sure how to go about getting it into the code. once I have the token, I'm all set.
page.aspx#access_token=AAACrxQhmdpY

I used to this code on my page load and works, its not a very clean code, but you may figure out how to change it for your best use. so the algorithm is that when the page loads you redirect the user to Facebook authentication page using response.redirect to a string that contains three parameters:your app ID(appid), what permissions you are asking your user(scope), where you want Facebook to redirect the user after authorization, and a parameter as state which i guess it should be a random number. so after the user authorized your application he/she will be redirected to your page, with a request URL that contains the same state you prepared Facebook with(and you can use to identify who which request was which if there are many requests i guess) and also a new "code" parameter which you pass on to Facebook to obtain access token, you can use Facebook c# sdk to obtain the access token.in my code there is a line that says "if code is not null, go to alireza" and alireza is a line tag after the response.redirect code, this is because you dont want the process to be repeated all over and over (and of course probably the browser show an error).
int intstate;
string strstate;
string redirecturltofb;
string scope;
string appid;
code = Request.QueryString["code"];
if (!String.IsNullOrWhiteSpace(code))
{
goto alireza;
}
appid = "424047057656831";
scope = "user_about_me,user_activities,user_groups,email,publish_stream,user_birthday";
intstate = 45;
strstate = Convert.ToString(intstate);
redirecturltofb = "https://www.facebook.com/dialog/oauth?client_id=" + appid + "&redirect_uri=http://test5-2.apphb.com/&scope=" + scope + "&state=" + strstate;
Response.Redirect(redirecturltofb);

You have to use Javascript SDK to get access token back to code behind.
Use FB.Init as in http://csharpsdk.org/docs/web/getting-started
and do post back on certain conditions to get the access token.
Thank you,
Dharmendra