C#

Outlook Contact OAuth2 Access Token - Using Azure AD v2.0 Endpoint

See more Outlook Contact Examples

Demonstrates how to get a Microsoft Graph OAuth2 access token from a desktop application or script using scopes for Outlook Contact.

Microsoft Graph supports two authentication providers:

• To authenticate users with personal Microsoft accounts, such as live.com or outlook.com accounts, use the Azure Active Directory (Azure AD) v2.0 endpoint.
• To authenticate users with enterprise (that is, work or school) accounts, use Azure AD.

This example uses the Azure Active Directory (Azure AD) v2.0 endpoint.

C#

bool success = false;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  See more Microsoft Graph OAuth2 examples:
//  
//  Microsoft Graph OAuth2 App Authentication using Azure AD
//  Microsoft Graph OAuth2 Client Credentials Grant Flow
//  Microsoft Graph -- Renew Expiring Access Token (Azure AD v2.0 Endpoint)
//  Microsoft Graph -- Renew Expiring Access Token (Azure AD Endpoint)
//  Decode Microsoft Graph ID Token
//  Microsoft Graph Revoke OAuth2 Access Tokens

Chilkat.OAuth2 oauth2 = new Chilkat.OAuth2();

//  This should be the port in the localhost callback URL for your app.  
//  The callback URL would look like "http://localhost:3017/" if the port number is 3017.
oauth2.ListenPort = 3017;

oauth2.AuthorizationEndpoint = "https://login.microsoftonline.com/common/oauth2/v2.0/authorize";
oauth2.TokenEndpoint = "https://login.microsoftonline.com/common/oauth2/v2.0/token";

//  Replace these with actual values.
oauth2.ClientId = "MICROSOFT-GRAPH-CLIENT-ID";
//  This is your app password:
oauth2.ClientSecret = "MICROSOFT-GRAPH-CLIENT-SECRET";

oauth2.CodeChallenge = false;
//  Provide a SPACE separated list of scopes.
//  See https://developer.microsoft.com/en-us/graph/docs/authorization/permission_scopes 

//  Important: To get a refresh token in the final response, you have to ask for "offline_access" scope
oauth2.Scope = "openid profile offline_access user.readwrite contacts.readwrite files.readwrite";

//  Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
string url = oauth2.StartAuth();
if (oauth2.LastMethodSuccess == false) {
    Debug.WriteLine(oauth2.LastErrorText);
    return;
}

//  Launch the system's default browser navigated to the URL.
success = oauth2.LaunchBrowser(url);
if (success == false) {
    Debug.WriteLine(oauth2.LastErrorText);
    return;
}

//  Now wait for the authorization.
//  We'll wait for a max of 30 seconds.
int numMsWaited = 0;
while ((numMsWaited < 30000) && (oauth2.AuthFlowState < 3)) {
    oauth2.SleepMs(100);
    numMsWaited = numMsWaited + 100;
}

//  If there was no response from the browser within 30 seconds, then 
//  the AuthFlowState will be equal to 1 or 2.
//  1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
//  2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
//  In that case, cancel the background task started in the call to StartAuth.
if (oauth2.AuthFlowState < 3) {
    oauth2.Cancel();
    Debug.WriteLine("No response from the browser!");
    return;
}

//  Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
//  The possible AuthFlowState values are:
//  3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
//  4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
//  5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
if (oauth2.AuthFlowState == 5) {
    Debug.WriteLine("OAuth2 failed to complete.");
    Debug.WriteLine(oauth2.FailureInfo);
    return;
}

if (oauth2.AuthFlowState == 4) {
    Debug.WriteLine("OAuth2 authorization was denied.");
    Debug.WriteLine(oauth2.AccessTokenResponse);
    return;
}

if (oauth2.AuthFlowState != 3) {
    Debug.WriteLine("Unexpected AuthFlowState:" + Convert.ToString(oauth2.AuthFlowState));
    return;
}

Debug.WriteLine("OAuth2 authorization granted!");
Debug.WriteLine("Access Token = " + oauth2.AccessToken);

//  Get the full JSON response:
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.Load(oauth2.AccessTokenResponse);
json.EmitCompact = false;

//  The JSON response looks like this:

//  {
//    "token_type": "Bearer",
//    "scope": "openid profile User.ReadWrite Contacts.ReadWrite Files.ReadWrite ...",
//    "expires_in": 3600,
//    "ext_expires_in": 3600,
//    "access_token": "EwBAA8l6B...",
//    "refresh_token": "MCRMdbe...",
//    "id_token": "eyJ0eXA..."
//  }

Debug.WriteLine(json.Emit());

//  Save the JSON to a file for future requests.
Chilkat.FileAccess fac = new Chilkat.FileAccess();
fac.WriteEntireTextFile("qa_data/tokens/outlookContacts.json",json.Emit(),"utf-8",false);