SQL Server

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. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @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"

    DECLARE @sb int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sb OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @sb, 'AppendLn', @success OUT, 'curl -X GET "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" \'
    EXEC sp_OAMethod @sb, 'AppendLn', @success OUT, '  -H "Authorization: Bearer ACCESS_TOKEN" \'
    EXEC sp_OAMethod @sb, 'AppendLn', @success OUT, '  -H "Accept: application/json"'

    -- Build the JSON that provides information for getting the OAuth2 access token using the OAuth2 client credentials flow.
    DECLARE @jsonOAuth2 int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonOAuth2 OUT

    EXEC sp_OAMethod @jsonOAuth2, 'UpdateString', @success OUT, 'oauth2.client_id', 'CLIENT_ID'
    EXEC sp_OAMethod @jsonOAuth2, 'UpdateString', @success OUT, 'oauth2.client_secret', 'CLIENT_SECRET'
    EXEC sp_OAMethod @jsonOAuth2, 'UpdateString', @success OUT, 'oauth2.scope', 'https://graph.microsoft.com/.default'
    EXEC sp_OAMethod @jsonOAuth2, 'UpdateString', @success OUT, 'oauth2.token_endpoint', 'https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token'

    DECLARE @httpCurl int
    EXEC @hr = sp_OACreate 'Chilkat.HttpCurl', @httpCurl OUT

    -- 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.
    EXEC sp_OAMethod @httpCurl, 'SetAuth', @success OUT, @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:
    EXEC sp_OAMethod @httpCurl, 'SetVar', NULL, 'sharepoint_hostname', 'example.sharepoint.com'
    EXEC sp_OAMethod @httpCurl, 'SetVar', NULL, 'site_name', 'test'

    -- Run the curl command.
    EXEC sp_OAMethod @sb, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @httpCurl, 'DoYourThing', @success OUT, @sTmp0
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @httpCurl, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sb
        EXEC @hr = sp_OADestroy @jsonOAuth2
        EXEC @hr = sp_OADestroy @httpCurl
        RETURN
      END

    DECLARE @responseJson int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @responseJson OUT

    EXEC sp_OASetProperty @responseJson, 'EmitCompact', 0

    EXEC sp_OAMethod @httpCurl, 'GetResponseJson', @success OUT, @responseJson

    DECLARE @statusCode int
    EXEC sp_OAGetProperty @httpCurl, 'StatusCode', @statusCode OUT

    PRINT 'response status code: ' + @statusCode

    EXEC sp_OAMethod @responseJson, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @sb
    EXEC @hr = sp_OADestroy @jsonOAuth2
    EXEC @hr = sp_OADestroy @httpCurl
    EXEC @hr = sp_OADestroy @responseJson


END
GO