(Classic ASP) curl with OAuth2 Client Credentials

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This example shows how to run a simple CURL command with an OAuth2 access token for authorization. We use CURL to retrieve a SharePoint site ID, and Chilkat automatically fetches the OAuth2 access token using the provided credentials.

Note: This example requires Chilkat v11.5.0 or greater.

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example will run the following curl command

' curl -X GET "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" \
'   -H "Authorization: Bearer ACCESS_TOKEN" \
'   -H "Accept: application/json"

set sb = Server.CreateObject("Chilkat.StringBuilder")
success = sb.AppendLn("curl -X GET ""https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}"" \")
success = sb.AppendLn("  -H ""Authorization: Bearer ACCESS_TOKEN"" \")
success = sb.AppendLn("  -H ""Accept: application/json""")

' Build the JSON that provides information for getting the OAuth2 access token using the OAuth2 client credentials flow.
set jsonOAuth2 = Server.CreateObject("Chilkat.JsonObject")

success = jsonOAuth2.UpdateString("oauth2.client_id","CLIENT_ID")
success = jsonOAuth2.UpdateString("oauth2.client_secret","CLIENT_SECRET")
success = jsonOAuth2.UpdateString("oauth2.scope","https://graph.microsoft.com/.default")
success = jsonOAuth2.UpdateString("oauth2.token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token")

set httpCurl = Server.CreateObject("Chilkat.HttpCurl")

' Provide the information for getting the OAuth2 access token from the token endpoint
' Note: The Authorization header specified in the curl command will be ignored and replaced using the OAuth2 access token obtained at runtime from the token endpoint.
success = httpCurl.SetAuth(jsonOAuth2)

' The placeholders {{sharepoint_hostname}} and {{site_name}} represent variables that must be defined before execution.
' When DoYourThing runs the curl command, it automatically substitutes these placeholders with their corresponding values.
' Below are the values assigned to these variables:
httpCurl.SetVar "sharepoint_hostname","example.sharepoint.com"
httpCurl.SetVar "site_name","test"

' Run the curl command.
success = httpCurl.DoYourThing(sb.GetAsString())
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( httpCurl.LastErrorText) & "</pre>"
    Response.End
End If

set responseJson = Server.CreateObject("Chilkat.JsonObject")
responseJson.EmitCompact = 0

success = httpCurl.GetResponseJson(responseJson)

statusCode = httpCurl.StatusCode
Response.Write "<pre>" & Server.HTMLEncode( "response status code: " & statusCode) & "</pre>"

Response.Write "<pre>" & Server.HTMLEncode( responseJson.Emit()) & "</pre>"

%>
</body>
</html>