Xojo Plugin Requires Chilkat v11.5.0+

Box: Get a Service Account Token with Client Credentials

See more Box Examples

Obtain a Box service-account token using the client credentials grant. Configure and authorize a Server app first. Load credentials from protected application configuration; do not ship a client secret in a public client.

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

Xojo Plugin

Dim success As Boolean
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

Dim curl As New Chilkat.HttpCurl
curl.SetVar "client_id","BOX_CLIENT_ID"
curl.SetVar "client_secret","BOX_CLIENT_SECRET"
curl.SetVar "enterprise_id","BOX_ENTERPRISE_ID"
//  enterprise identifies the app's service account. This is not an admin-user token.
curl.ClearTargetOutput "*"
curl.ClearVar "access_token"
curl.AddTargetOutput "access_token","access_token"
success = curl.DoYourThing("curl -X POST ""https://api.box.com/oauth2/token"" --data-urlencode ""grant_type=client_credentials"" --data-urlencode ""client_id={{client_id}}"" --data-urlencode ""client_secret={{client_secret}}"" --data-urlencode ""box_subject_type=enterprise"" --data-urlencode ""box_subject_id={{enterprise_id}}""")
If ((success <> True) Or (curl.StatusCode <> 200)) Then
    System.DebugLog("Box request failed. HTTP status: " + Str(curl.StatusCode))
    System.DebugLog("Failure reason: " + Str(curl.FailReason))
    Return
End If

If (curl.VarDefined("!") <> True) Then
    System.DebugLog("Expected response fields are missing.")
    Return
End If

//  Keep this token in protected application memory; reacquire it when it expires.
//  Do not print tokens or the complete token response.
System.DebugLog("Service-account access token obtained.")
curl.ClearTargetOutput "*"
Dim authorizedCommand1 As New Chilkat.StringBuilder
success = authorizedCommand1.SetString("curl -X GET ""https://api.box.com/2.0/users/me?fields=id,name,login"" -H ""Authorization: Bearer {{access_token}}""")
Dim headerReplacement1 As Int32
headerReplacement1 = authorizedCommand1.Replace("{{access_token}}",curl.GetVar("access_token"))
success = curl.DoYourThing(authorizedCommand1.GetAsString())
If ((success <> True) Or (curl.StatusCode <> 200)) Then
    System.DebugLog("Box request failed. HTTP status: " + Str(curl.StatusCode))
    System.DebugLog("Failure reason: " + Str(curl.FailReason))
    System.DebugLog(curl.ResponseBodyStr)
    Return
End If

System.DebugLog(curl.ResponseBodyStr)