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(SQL Server) Dropbox Refresh OAuth2 Access Token

See more Dropbox Examples

Demonstrates how to mint a new access token using the refresh token obtained when originally getting the OAuth2 access token.

For more information, see https://www.dropbox.com/developers/documentation/http/documentation

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)
    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @http int
    -- Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    -- Implements the following CURL command:

    -- curl -X GET https://api.dropbox.com/oauth2/token \
    --     -d grant_type=refresh_token \
    --     -d refresh_token=<YOUR_REFRESH_TOKEN> \
    --     -u <YOUR_APP_KEY>:<YOUR_APP_SECRET>

    -- Use the following online tool to generate HTTP code from a CURL command
    -- Convert a cURL Command to HTTP Source Code

    EXEC sp_OASetProperty @http, 'Login', 'DROPBOX_APP_KEY'
    EXEC sp_OASetProperty @http, 'Password', 'DROPBOX_APP_SECRET'

    -- Get the refresh token from the JSON we saved when originally getting the access token.
    -- (See Get Dropbox OAuth2 Access Token w/ Refresh Token
    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'LoadFile', @success OUT, 'qa_data/tokens/dropbox.json'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @json, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    DECLARE @req int
    -- Use "Chilkat_9_5_0.HttpRequest" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'grant_type', 'refresh_token'
    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'refresh_token'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'refresh_token', @sTmp0

    DECLARE @resp int
    EXEC sp_OAMethod @http, 'PostUrlEncoded', @resp OUT, 'https://api.dropbox.com/oauth2/token', @req
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @req
        RETURN
      END

    DECLARE @sbResponseBody int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbResponseBody OUT

    EXEC sp_OAMethod @resp, 'GetBodySb', @success OUT, @sbResponseBody

    DECLARE @jResp int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jResp OUT

    EXEC sp_OAMethod @jResp, 'LoadSb', @success OUT, @sbResponseBody
    EXEC sp_OASetProperty @jResp, 'EmitCompact', 0


    PRINT 'Response Body:'
    EXEC sp_OAMethod @jResp, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    DECLARE @respStatusCode int
    EXEC sp_OAGetProperty @resp, 'StatusCode', @respStatusCode OUT

    PRINT 'Response Status Code = ' + @respStatusCode
    IF @respStatusCode >= 400
      BEGIN

        PRINT 'Response Header:'
        EXEC sp_OAGetProperty @resp, 'Header', @sTmp0 OUT
        PRINT @sTmp0

        PRINT 'Failed.'
        EXEC @hr = sp_OADestroy @resp

        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @sbResponseBody
        EXEC @hr = sp_OADestroy @jResp
        RETURN
      END
    EXEC @hr = sp_OADestroy @resp

    -- Sample JSON response:
    -- (Sample code for parsing the JSON response is shown below)

    -- {
    --   "access_token": "sl.AC75WPYRqOi0mxcRqlimbV9FKHu04biz5qHwatG3MTgzFK7kLrGVlM9EgP4603tE7bWw0s1rMbTKiHsf37TUshPYvq-3r0qeBr_PrZIAibN8XOQicvboiOnqx6JrDekq-w8D-tE",
    --   "token_type": "bearer",
    --   "expires_in": 14400
    -- }

    DECLARE @access_token nvarchar(4000)
    EXEC sp_OAMethod @jResp, 'StringOf', @access_token OUT, 'access_token'

    PRINT 'New Access Token: ' + @access_token

    -- Perhaps update our Dropbox JSON file with the new access token.
    -- (The existing refresh token does not change, and can be used over and over to mint new access tokens.)
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'access_token', @access_token

    EXEC sp_OAMethod @json, 'WriteFile', @success OUT, 'qa_data/tokens/dropbox.json'

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @sbResponseBody
    EXEC @hr = sp_OADestroy @jResp


END
GO

 

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