(MFC) Office365 IMAP with OAuth2 Authentication

Demonstrates how to authenticate using OAuth2 with outlook.office365.com.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>
#include <CkImap.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // An Office365 OAuth2 access token must first be obtained prior
    // to running this code.

    // Getting the OAuth2 access token for the 1st time requires the O365 account owner's 
    // interactive authorizaition via a web browser.  Afterwards, the access token
    // can be repeatedly refreshed automatically.

    // See the following examples for getting and refreshing an OAuth2 access token

    // Get Office365 SMTP/IMAP/POP3 OAuth2 Access Token
    // Refresh Office365 SMTP/IMAP/POP3 OAuth2 Access Token

    // First get our previously obtained OAuth2 access token.
    CkJsonObject jsonToken;
    bool success = jsonToken.LoadFile("qa_data/tokens/office365.json");
    if (success == false) {
        strOut.append("Failed to open the office365 OAuth JSON file.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkImap imap;

    imap.put_Ssl(true);
    imap.put_Port(993);

    // Connect to the Office365 IMAP server.
    success = imap.Connect("outlook.office365.com");
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Use OAut2 authentication.
    imap.put_AuthMethod("XOAUTH2");

    // Login using our username (i.e. email address) and the access token for the password.
    success = imap.Login("OFFICE365_EMAIL_ADDRESS",jsonToken.stringOf("access_token"));
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("O365 OAuth authentication is successful.");
    strOut.append("\r\n");

    // Do something...
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        strOut.append(imap.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Your application can continue to do other things in the IMAP session....

    // When finished, logout and close the connection.
    success = imap.Logout();
    success = imap.Disconnect();

    strOut.append("Finished.");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }