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(SQL Server) Get a Google Sheets OAuth2 Access Token

Demonstrates how to get a Google Sheets OAuth2 access token from a desktop application or script.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    --  This example requires the Chilkat API to have been previously unlocked.
    --  See Global Unlock Sample for sample code.

    DECLARE @oauth2 int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.OAuth2', @oauth2 OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    --  For Google OAuth2, set the listen port equal to the port used
    --  in the Authorized Redirect URL for the Client ID.
    --  For example, in this case the Authorized Redirect URL would be http://localhost:55568/
    --  Your app should choose a port not likely not used by any other application.
    EXEC sp_OASetProperty @oauth2, 'ListenPort', 55568

    EXEC sp_OASetProperty @oauth2, 'AuthorizationEndpoint', 'https://accounts.google.com/o/oauth2/v2/auth'
    EXEC sp_OASetProperty @oauth2, 'TokenEndpoint', 'https://www.googleapis.com/oauth2/v4/token'

    --  Replace these with actual values.
    EXEC sp_OASetProperty @oauth2, 'ClientId', 'GOOGLE-CLIENT-ID'
    EXEC sp_OASetProperty @oauth2, 'ClientSecret', 'GOOGLE-CLIENT-SECRET'

    EXEC sp_OASetProperty @oauth2, 'CodeChallenge', 1
    EXEC sp_OASetProperty @oauth2, 'CodeChallengeMethod', 'S256'

    --  These are the scopes for Google Sheets:
    --  https://www.googleapis.com/auth/spreadsheets 	read/write access to spreadsheets
    --  https://www.googleapis.com/auth/spreadsheets.readonly 	read-only access to spreadsheets
    EXEC sp_OASetProperty @oauth2, 'Scope', 'https://www.googleapis.com/auth/spreadsheets'

    --  Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
    DECLARE @url nvarchar(4000)
    EXEC sp_OAMethod @oauth2, 'StartAuth', @url OUT
    EXEC sp_OAGetProperty @oauth2, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @oauth2, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    --  At this point, your application should load the URL in a browser.
    --  For example,
    --  in C#: System.Diagnostics.Process.Start(url);
    --  in Java: Desktop.getDesktop().browse(new URI(url));
    --  in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
    --               wsh.Run url
    --  The QuickBooks account owner would interactively accept or deny the authorization request.

    --  Add the code to load the url in a web browser here...
    --  Add the code to load the url in a web browser here...
    --  Add the code to load the url in a web browser here...

    --  Now wait for the authorization.
    --  We'll wait for a max of 30 seconds.
    DECLARE @numMsWaited int
    SELECT @numMsWaited = 0
    EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
    WHILE (@numMsWaited < 30000) and (@iTmp0 < 3)
      BEGIN
        EXEC sp_OAMethod @oauth2, 'SleepMs', NULL, 100
        SELECT @numMsWaited = @numMsWaited + 100
      END

    --  If there was no response from the browser within 30 seconds, then
    --  the AuthFlowState will be equal to 1 or 2.
    --  1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
    --  2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
    --  In that case, cancel the background task started in the call to StartAuth.
    EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
    IF @iTmp0 < 3
      BEGIN
        EXEC sp_OAMethod @oauth2, 'Cancel', @success OUT

        PRINT 'No response from the browser!'
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    --  Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
    --  The possible AuthFlowState values are:
    --  3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
    --  4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
    --  5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
    EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
    IF @iTmp0 = 5
      BEGIN

        PRINT 'OAuth2 failed to complete.'
        EXEC sp_OAGetProperty @oauth2, 'FailureInfo', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
    IF @iTmp0 = 4
      BEGIN

        PRINT 'OAuth2 authorization was denied.'
        EXEC sp_OAGetProperty @oauth2, 'AccessTokenResponse', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
    IF @iTmp0 <> 3
      BEGIN

        EXEC sp_OAGetProperty @oauth2, 'AuthFlowState', @iTmp0 OUT
        PRINT 'Unexpected AuthFlowState:' + @iTmp0
        EXEC @hr = sp_OADestroy @oauth2
        RETURN
      END

    --  Save the full JSON access token response to a file.
    DECLARE @sbJson int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.StringBuilder', @sbJson OUT

    EXEC sp_OAGetProperty @oauth2, 'AccessTokenResponse', @sTmp0 OUT
    EXEC sp_OAMethod @sbJson, 'Append', @success OUT, @sTmp0
    EXEC sp_OAMethod @sbJson, 'WriteFile', @success OUT, 'qa_data/tokens/googleSheets.json', 'utf-8', 0

    --  The saved JSON response looks like this:

    --  	{
    --  	 "access_token": "ya39.Ci-XA_C5bGgRDC3UaD-h0_NeL-DVIQnI2gHtBBBHkZzrwlARkwX6R3O0PCDEzRlfaQ",
    --  	 "token_type": "Bearer",
    --  	 "expires_in": 3600,
    --  	 "refresh_token": "1/r_2c_7jddspcdfesrrfKqfXtqo08D6Q-gUU0DsdfVMsx0c"
    --  	}
    -- 

    PRINT 'OAuth2 authorization granted!'

    EXEC sp_OAGetProperty @oauth2, 'AccessToken', @sTmp0 OUT
    PRINT 'Access Token = ' + @sTmp0

    EXEC @hr = sp_OADestroy @oauth2
    EXEC @hr = sp_OADestroy @sbJson


END
GO

 

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