(SQL Server) Twitter - Application Only Authentication

Demonstrates how to get a Twitter OAuth2 token for application-only authentication.

This example is deprecated and no longer valid.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- It requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- Note: Define your Twitter apps at https://apps.twitter.com/

    -- We're going to send an HTTPS POST that looks like this:

    -- POST /oauth2/token HTTP/1.1
    -- Host: api.twitter.com
    -- User-Agent: My Twitter App v1.0.23
    -- Authorization: Basic eHZ6MWV2RlM0d0VFUFRHRUZQSEJvZzpMOHFxOVBaeVJn
    --                      NmllS0dFS2hab2xHQzB2SldMdzhpRUo4OERSZHlPZw==
    -- Content-Type: application/x-www-form-urlencoded;charset=UTF-8
    -- Content-Length: 29
    -- Accept-Encoding: gzip
    -- 
    -- grant_type=client_credentials

    -- Update these values with your consumer key and secret (also known as API key and API secret).
    DECLARE @consumerKey nvarchar(4000)
    SELECT @consumerKey = 'TWITTER_CONSUMER_KEY'
    DECLARE @consumerSecret nvarchar(4000)
    SELECT @consumerSecret = 'TWITTER_CONSUMER_SECRET'

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

    EXEC sp_OASetProperty @http, 'BasicAuth', 1
    EXEC sp_OASetProperty @http, 'Login', @consumerKey
    EXEC sp_OASetProperty @http, 'Password', @consumerSecret

    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'grant_type', 'client_credentials'

    EXEC sp_OASetProperty @req, 'HttpVerb', 'POST'
    EXEC sp_OASetProperty @req, 'ContentType', 'application/x-www-form-urlencoded'

    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpReq', @success OUT, 'https://api.twitter.com/oauth2/token', @req, @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END


    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    PRINT 'Response Status Code: ' + @iTmp0

    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN

        PRINT 'Expected a 200 response status code for success.'
        EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- We should get a JSON response like this:

    -- {
    --     "token_type":"bearer",
    --     "access_token":"..."
    -- }

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

    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    EXEC sp_OAMethod @json, 'Load', @success OUT, @sTmp0


    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'access_token'
    PRINT 'Access token = ' + @sTmp0

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @resp
    EXEC @hr = sp_OADestroy @json


END
GO