Go 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.

Go

    success := false

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

    success = false

    oauth2 := chilkat.NewOAuth2()
    oauth2.SetListenPort(3017)
    oauth2.SetAuthorizationEndpoint("https://account.box.com/api/oauth2/authorize")
    oauth2.SetTokenEndpoint("https://api.box.com/oauth2/token")
    oauth2.SetClientId("BOX_CLIENT_ID")
    oauth2.SetClientSecret("BOX_CLIENT_SECRET")
    //  Use Box's documented confidential-client authorization-code flow.
    oauth2.SetCodeChallenge(false)
    url := oauth2.StartAuth()
    if oauth2.LastMethodSuccess() != true {
        fmt.Println(oauth2.LastErrorText())
        oauth2.DisposeOAuth2()
        return
    }

    success = oauth2.LaunchBrowser(*url)
    if success != true {
        fmt.Println(oauth2.LastErrorText())
        oauth2.DisposeOAuth2()
        return
    }

    elapsedMs := 0
    for (elapsedMs < 120000) && (oauth2.AuthFlowState() < 3) {
        oauth2.SleepMs(100)
        elapsedMs = elapsedMs + 100
    }

    if oauth2.AuthFlowState() < 3 {
        oauth2.Cancel()
        fmt.Println("Authorization timed out.")
        oauth2.DisposeOAuth2()
        return
    }

    if oauth2.AuthFlowState() != 3 {
        fmt.Println("Authorization was denied or failed. State: ", oauth2.AuthFlowState())
        oauth2.DisposeOAuth2()
        return
    }

    //  Retain both tokens in your application's protected token store.
    //  The variables below are deliberately not printed.
    accessToken := oauth2.AccessToken()
    refreshToken := oauth2.RefreshToken()
    //  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.
    tokens := chilkat.NewJsonObject()
    success = tokens.Load(oauth2.AccessTokenResponse())
    if success != true {
        fmt.Println(tokens.LastErrorText())
        oauth2.DisposeOAuth2()
        tokens.DisposeJsonObject()
        return
    }

    success = tokens.WriteFile("qa_data/tokens/box_oauth.json")
    if success != true {
        fmt.Println(tokens.LastErrorText())
        oauth2.DisposeOAuth2()
        tokens.DisposeJsonObject()
        return
    }

    fmt.Println("Authorization complete; token response saved in the protected local token file.")

    oauth2.DisposeOAuth2()
    tokens.DisposeJsonObject()