DataFlex Requires Chilkat v11.5.0+

Box: Authorize a User with OAuth 2.0

See more Box Examples

Interactive local-development example using a browser and a loopback callback. Register exactly http://localhost:3017/ in the Box User app. Run this in a trusted environment that can hold the client secret. A deployed web app must handle its registered HTTPS callback on the server.

See the Box API guide for setup and the complete workflow.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoOauth2
    String sUrl
    Integer iElapsedMs
    String sAccessToken
    String sRefreshToken
    Handle hoTokens
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    Move False To iSuccess

    //  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
    //  See Global Unlock Sample.
    //  Guide: Box API Guide.

    Move False To iSuccess

    Get Create (RefClass(cComChilkatOAuth2)) To hoOauth2
    If (Not(IsComObjectCreated(hoOauth2))) Begin
        Send CreateComObject of hoOauth2
    End
    Set ComListenPort Of hoOauth2 To 3017
    Set ComAuthorizationEndpoint Of hoOauth2 To "https://account.box.com/api/oauth2/authorize"
    Set ComTokenEndpoint Of hoOauth2 To "https://api.box.com/oauth2/token"
    Set ComClientId Of hoOauth2 To "BOX_CLIENT_ID"
    Set ComClientSecret Of hoOauth2 To "BOX_CLIENT_SECRET"
    //  Use Box's documented confidential-client authorization-code flow.
    Set ComCodeChallenge Of hoOauth2 To False
    Get ComStartAuth Of hoOauth2 To sUrl
    Get ComLastMethodSuccess Of hoOauth2 To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLaunchBrowser Of hoOauth2 sUrl To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Move 0 To iElapsedMs
    While ((iElapsedMs < 120000) And ((ComAuthFlowState(hoOauth2)) < 3))
        Send ComSleepMs To hoOauth2 100
        Move (iElapsedMs + 100) To iElapsedMs
    Loop

    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 < 3) Begin
        Get ComCancel Of hoOauth2 To iSuccess
        Showln "Authorization timed out."
        Procedure_Return
    End

    Get ComAuthFlowState Of hoOauth2 To iTemp1
    If (iTemp1 <> 3) Begin
        Get ComAuthFlowState Of hoOauth2 To iTemp1
        Showln "Authorization was denied or failed. State: " iTemp1
        Procedure_Return
    End

    //  Retain both tokens in your application's protected token store.
    //  The variables below are deliberately not printed.
    Get ComAccessToken Of hoOauth2 To sAccessToken
    Get ComRefreshToken Of hoOauth2 To sRefreshToken
    //  For this local-development example only, save in a directory restricted to this user.
    //  Create qa_data/tokens before running; never put this file under a web root.
    Get Create (RefClass(cComChilkatJsonObject)) To hoTokens
    If (Not(IsComObjectCreated(hoTokens))) Begin
        Send CreateComObject of hoTokens
    End
    Get ComAccessTokenResponse Of hoOauth2 To sTemp1
    Get ComLoad Of hoTokens sTemp1 To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoTokens To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComWriteFile Of hoTokens "qa_data/tokens/box_oauth.json" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoTokens To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Authorization complete; token response saved in the protected local token file."


End_Procedure