DataFlex

Docusign OAuth2 Access Token

See more DocuSign Examples

Demonstrates how to get a Docusign OAuth2 access token from a desktop application or script.

Important: This example requires that you add a line of code (or a few lines of code) to launch a web browser that navigates to the URL returned by the StartAuth method. The Docusign account owner interactively authorizes the access just for the 1st time in getting the access token. Once the access token is obtained, it can be refreshed with no user interaction.

Also, you must define your app in the Docusign web portal under "My Apps / Integration Keys". You would need to add a Redirect URL such as "http://localhost:3017/". The port number in the Redirect URI must match the Chilkat OAuth2's ListenPort and the format of the URL should be exactly "http://localhost:3017/". Do not use "https://" because the redirect from the browser to your app (listening on a background thread in Chilkat) is a localhost-to-localhost connection.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoOauth2
    String sUrl
    Integer iNumMsWaited
    Handle hoJson
    Handle hoFac
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatOAuth2)) To hoOauth2
    If (Not(IsComObjectCreated(hoOauth2))) Begin
        Send CreateComObject of hoOauth2
    End

    // This should be the port in the localhost Redirect URI for your app defined in the Docusign developer portal.  
    // The Redirect URI would look like "http://localhost:3017/" if the port number is 3017.
    Set ComListenPort Of hoOauth2 To 3017

    // For the developer sandbox environment, the authorization endpoint is https://account-d.docusign.com/oauth/auth
    // For the production platform, the authorization endpoint is https://account.docusign.com/oauth/auth
    Set ComAuthorizationEndpoint Of hoOauth2 To "https://account-d.docusign.com/oauth/auth"
    Set ComTokenEndpoint Of hoOauth2 To "https://account-d.docusign.com/oauth/token"

    // Replace these with actual values.
    // The client ID is also known as the "integration key" in Docusign.
    Set ComClientId Of hoOauth2 To "MY_DOCUSIGN_CLIENT_ID"
    // This is your secret key for the authorization code grant.
    Set ComClientSecret Of hoOauth2 To "MY_DOCUSIGN_CLIENT_SECRET"

    Set ComScope Of hoOauth2 To "signature"

    // Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
    Get ComStartAuth Of hoOauth2 To sUrl
    Get ComLastMethodSuccess Of hoOauth2 To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Launch the system's default browser navigated to the URL.
    Get ComLaunchBrowser Of hoOauth2 sUrl To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Now wait for the authorization.
    // We'll wait for a max of 30 seconds.
    Move 0 To iNumMsWaited
    While ((iNumMsWaited < 30000) And ((ComAuthFlowState(hoOauth2)) < 3))
        Send ComSleepMs To hoOauth2 100
        Move (iNumMsWaited + 100) To iNumMsWaited
    Loop

    // 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.
    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 < 3) Begin
        Get ComCancel Of hoOauth2 To iSuccess
        Showln "No response from the browser!"
        Procedure_Return
    End

    // 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.
    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 = 5) Begin
        Showln "OAuth2 failed to complete."
        Get ComFailureInfo Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 = 4) Begin
        Showln "OAuth2 authorization was denied."
        Get ComAccessTokenResponse Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 <> 3) Begin
        Get ComAuthFlowState Of hoOauth2 To iTemp1
        Showln "Unexpected AuthFlowState:" iTemp1
        Procedure_Return
    End

    Showln "OAuth2 authorization granted!"
    Get ComAccessToken Of hoOauth2 To sTemp1
    Showln "Access Token = " sTemp1

    // Get the full JSON response:
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComAccessTokenResponse Of hoOauth2 To sTemp1
    Get ComLoad Of hoJson sTemp1 To iSuccess
    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // The JSON response looks like this:

    // {
    //   "access_token": "eyJ0eXA....YQyig",
    //   "token_type": "Bearer",
    //   "refresh_token": "eyJ0eXA....auE3eHKg",
    //   "expires_in": 28800
    // }

    // Save the JSON to a file for future requests.
    Get Create (RefClass(cComCkFileAccess)) To hoFac
    If (Not(IsComObjectCreated(hoFac))) Begin
        Send CreateComObject of hoFac
    End
    Get ComEmit Of hoJson To sTemp1
    Get ComWriteEntireTextFile Of hoFac "qa_data/tokens/docusign.json" sTemp1 "utf-8" False To iSuccess


End_Procedure