Visual FoxPro Requires Chilkat v10.1.2+

Salesforce OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to get a Salesforce OAuth2 access token from a desktop application or script. Visual FoxPro

LOCAL lnSuccess
LOCAL loOauth2
LOCAL lcUrl
LOCAL lnNumMsWaited
LOCAL loSbJson

lnSuccess = 0

*  To further clarify, see OAuth 2.0 Authorization Flow

loOauth2 = CreateObject('Chilkat.OAuth2')

*  This should be the port in the localhost callback URL for your connected app.  
*  The callback URL would look like "http://localhost:3017/" if the port number is 3017.
loOauth2.ListenPort = 3017

loOauth2.AuthorizationEndpoint = "https://login.salesforce.com/services/oauth2/authorize"
loOauth2.TokenEndpoint = "https://login.salesforce.com/services/oauth2/token"

*  Replace this with your actual client ID (Consumer Key)
loOauth2.ClientId = "CLIENT_ID"

*  We don't have to include the client secret.
*  See the screenshot of our Connected App below..

*  This is for Require Proof Key for Code Exchange (PKCE)
*  See OAuth2 PKCE Explained
loOauth2.CodeChallenge = 1
loOauth2.CodeChallengeMethod = "S256"

*  To force the OAuth consent screen to reappear (even if previously granted), use:
loOauth2.AddAuthQueryParam("prompt","consent")

*  Begin the OAuth2 authorization flow.  This returns a URL that should be loaded in a browser.
lcUrl = loOauth2.StartAuth()
IF (loOauth2.LastMethodSuccess <> 1) THEN
    ? loOauth2.LastErrorText
    RELEASE loOauth2
    CANCEL
ENDIF

*  Launch the default browser on the system and navigate to the url.
*  The LaunchBrowser method was added in Chilkat v10.1.2.
lnSuccess = loOauth2.LaunchBrowser(lcUrl)
IF (lnSuccess = 0) THEN
    ? loOauth2.LastErrorText
    RELEASE loOauth2
    CANCEL
ENDIF

*  Wait for the user to approve or deny authorization in the browser.
lnNumMsWaited = 0
DO WHILE (lnNumMsWaited < 90000) AND (loOauth2.AuthFlowState < 3)
    loOauth2.SleepMs(100)
    lnNumMsWaited = lnNumMsWaited + 100
ENDDO

*  If the browser does not respond within the specified time, AuthFlowState will be:
*  
*  1: Waiting for Redirect – The OAuth2 background thread is waiting for the browser's redirect request.
*  2: Waiting for Final Response – The thread is awaiting the final access token response.
*  In either case, cancel the background task initiated by StartAuth.

IF (loOauth2.AuthFlowState < 3) THEN
    loOauth2.Cancel()
    ? "No response from the browser!"
    RELEASE loOauth2
    CANCEL
ENDIF

*  Check AuthFlowState to determine if authorization was granted, denied, or failed:
*  
*  3: Success – OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
*  4: Access Denied – OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
*  5: Failure – OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

IF (loOauth2.AuthFlowState = 5) THEN
    ? "OAuth2 failed to complete."
    ? loOauth2.FailureInfo
    RELEASE loOauth2
    CANCEL
ENDIF

IF (loOauth2.AuthFlowState = 4) THEN
    ? "OAuth2 authorization was denied."
    ? loOauth2.AccessTokenResponse
    RELEASE loOauth2
    CANCEL
ENDIF

IF (loOauth2.AuthFlowState <> 3) THEN
    ? "Unexpected AuthFlowState:" + STR(loOauth2.AuthFlowState)
    RELEASE loOauth2
    CANCEL
ENDIF

? "OAuth2 authorization granted!"
? "Access Token = " + loOauth2.AccessToken

*  Save the full JSON access token response to a file.
loSbJson = CreateObject('Chilkat.StringBuilder')
loSbJson.Append(loOauth2.AccessTokenResponse)
loSbJson.WriteFile("qa_data/tokens/_salesforce.json","utf-8",0)

*  The saved JSON response looks like this:

*  {
*    "access_token": "00D41000....uLZBpT6",
*    "refresh_token": "5Aep....25xdGgkrV",
*    "signature": "cjTbSc5DvcKpaMoRTzuQTJLb1tcMw8LEO01flq4aMD4=",
*    "scope": "refresh_token id",
*    "instance_url": "https://d41000000f8a0eak-dev-ed.my.salesforce.com",
*    "id": "https://login.salesforce.com/id/00D41000000F8A0EAK/005410000....xAAE",
*    "token_type": "Bearer",
*    "issued_at": "1738348388166"
*  }

*  --------------------------------------------------------------------------
*  Here's a screenshot of a Salesforce Connected App 
*  with the correct Callback URL for this example,
*  and also selects "Require Proof Key for Code Exchange (PKCE)"
*  and does not requires the secret for the authorization or refresh flow,
*  and also allows for the Client Credentials flow.
*  

RELEASE loOauth2
RELEASE loSbJson