Visual FoxPro Requires Chilkat v11.0.0+

Office365 OAuth2 Resource Owner Password Credentials Grant for SMTP, IMAP, POP

Demonstrates how to get an OAuth2 access token for use with Office 365 in the SMTP, IMAP, and POP3 protocols using the resource owner password credentials grant.

This is a way of getting an OAuth2 access token for the O365 account you own, WITHOUT needing to grant access interactively via a browser.

Visual FoxPro

LOCAL lnSuccess
LOCAL loHttp
LOCAL loReq
LOCAL loResp
LOCAL lnStatusCode
LOCAL loFac

lnSuccess = 0

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

*  Get an OAuth2 access token by sending a POST like this:

*  	POST {tenant}/oauth2/v2.0/token
*  	Host: login.microsoftonline.com
*  	Content-Type: application/x-www-form-urlencoded
*  
*  	client_id=6731de76-14a6-49ae-97bc-6eba6914391e
*  	&client_secret=*****************
*  	&scope=user.read%20openid%20profile%20offline_access
*  	&username=MyUsername@myTenant.com
*  	&password=SuperS3cret
*  	&grant_type=password

loHttp = CreateObject('Chilkat.Http')

loReq = CreateObject('Chilkat.HttpRequest')
loReq.HttpVerb = "POST"
loReq.ContentType = "application/x-www-form-urlencoded"

*  Use the application ID for the client_id.
*  (In Azure App Registrations, use the Application (client) ID)
loReq.AddParam("client_id","CLIENT_ID")
loReq.AddParam("client_secret","CLIENT_SECRET")

loReq.AddParam("scope","openid profile offline_access https://outlook.office365.com/SMTP.Send https://outlook.office365.com/POP.AccessAsUser.All https://outlook.office365.com/IMAP.AccessAsUser.All")
loReq.AddParam("username","my_email_address")
loReq.AddParam("password","my_email_password")
loReq.AddParam("grant_type","password")

*  Replace "{tenant}" with your tenant ID, such as "112d7ed6-71bf-4eba-a866-738364321bfc".req.HttpVerb = "POST";
loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpReq("https://login.microsoftonline.com/{tenant}/oauth2/v2.0/token",loReq,loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loReq
    RELEASE loResp
    CANCEL
ENDIF

lnStatusCode = loResp.StatusCode
? "response status code: " + STR(lnStatusCode)
? "response body:"
? loResp.BodyStr

*  The successful JSON response looks like this:

*  {
*    "token_type": "Bearer",
*    "scope": "https://outlook.office365.com/IMAP.AccessAsUser.All https://outlook.office365.com/POP.AccessAsUser.All https://outlook.office365.com/SMTP.Send",
*    "expires_in": 3599,
*    "ext_expires_in": 3599,
*    "access_token": "eyJ0eX ... 62Nyw",
*    "refresh_token": "0.AAAA1n4t ... tNxyA",
*    "id_token": "eyJ0eXA ... qdIGyOYw"
*  }

*  Save the JSON to a file for future requests.
IF (lnStatusCode = 200) THEN
    loFac = CreateObject('Chilkat.FileAccess')
    loFac.WriteEntireTextFile("qa_data/tokens/office365.json",loResp.BodyStr,"utf-8",0)
ENDIF

RELEASE loHttp
RELEASE loReq
RELEASE loResp
RELEASE loFac