B4X Requires Chilkat v11.5.0+

curl with OAuth2 Client Credentials

See more CURL Examples

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. B4X

Dim success As Boolean = False

'  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"

Dim sb As ChilkatStringBuilder
sb.Initialize
sb.AppendLn("curl -X GET " & Chr(34) & "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" & Chr(34) & " \")
sb.AppendLn("  -H " & Chr(34) & "Authorization: Bearer ACCESS_TOKEN" & Chr(34) & " \")
sb.AppendLn("  -H " & Chr(34) & "Accept: application/json" & Chr(34))

'  Build the JSON that provides information for getting the OAuth2 access token using the OAuth2 client credentials flow.
Dim jsonOAuth2 As ChilkatJsonObject
jsonOAuth2.Initialize

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

Dim httpCurl As ChilkatHttpCurl
httpCurl.Initialize("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.
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 = False Then
    Log(httpCurl.LastErrorText)
    Return
End If


Dim responseJson As ChilkatJsonObject
responseJson.Initialize
responseJson.EmitCompact = False

httpCurl.GetResponseJson(responseJson)

Dim statusCode As Int = httpCurl.StatusCode
Log("response status code: " & statusCode)

Log(responseJson.Emit)