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(Lianja) Quickbooks OAuth1 Authorization (3-legged)

Demonstrates 3-legged OAuth1 authorization for Quickbooks.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

lcConsumerKey = "QUICKBOOKS_CONSUMER_KEY"
lcConsumerSecret = "QUICKBOOKS_CONSUMER_SECRET"

lcRequestTokenUrl = "https://oauth.intuit.com/oauth/v1/get_request_token"
lcAuthorizeUrl = "https://appcenter.intuit.com/Connect/Begin"
lcAccessTokenUrl = "https://oauth.intuit.com/oauth/v1/get_access_token"

//  The port number is picked at random. It's some unused port that won't likely conflict with anything else..
lcCallbackUrl = "http://localhost:3017/"
lnCallbackLocalPort = 3017

//  The 1st step in 3-legged OAuth1.0a is to send a POST to the request token URL to obtain an OAuth Request Token
loHttp = createobject("CkHttp")

loHttp.OAuth1 = .T.
loHttp.OAuthConsumerKey = lcConsumerKey
loHttp.OAuthConsumerSecret = lcConsumerSecret
loHttp.OAuthCallback = lcCallbackUrl

loReq = createobject("CkHttpRequest")
loResp = loHttp.PostUrlEncoded(lcRequestTokenUrl,loReq)
if (loHttp.LastMethodSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loHttp
    release loReq
    return
endif

if (loResp.StatusCode >= 400) then
    ? "Error response status code = " + str(loResp.StatusCode)
    ? loResp.BodyStr
    release loHttp
    release loReq
    return
endif

//  If successful, the resp.BodyStr contains this:
//  oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
? loResp.BodyStr

loHashTab1 = createobject("CkHashtable")
loHashTab1.AddQueryParams(loResp.BodyStr)

lcRequestToken = loHashTab1.LookupStr("oauth_token")
lcRequestTokenSecret = loHashTab1.LookupStr("oauth_token_secret")
loHttp.OAuthTokenSecret = lcRequestTokenSecret

release loResp

? "oauth_token = " + lcRequestToken
? "oauth_token_secret = " + lcRequestTokenSecret

//  ---------------------------------------------------------------------------
//  The next step is to form a URL to send to the AuthorizeUrl
//  This is an HTTP GET that we load into a popup browser.
loSbUrlForBrowser = createobject("CkStringBuilder")
loSbUrlForBrowser.Append(lcAuthorizeUrl)
loSbUrlForBrowser.Append("?oauth_token=")
loSbUrlForBrowser.Append(lcRequestToken)
lcUrlForBrowser = loSbUrlForBrowser.GetAsString()

//  When the urlForBrowser is loaded into a browser, the response from Quickbooks will redirect back to localhost:3017
//  We'll need to start a socket that is listening on port 3017 for the callback from the browser.
loListenSock = createobject("CkSocket")

lnBackLog = 5
llSuccess = loListenSock.BindAndListen(lnCallbackLocalPort,lnBackLog)
if (llSuccess <> .T.) then
    ? loListenSock.LastErrorText
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    return
endif

//  Wait for the browser's connection in a background thread.
//  (We'll send load the URL into the browser following this..)
//  Wait a max of 60 seconds before giving up.
lnMaxWaitMs = 60000
loTask = loListenSock.AcceptNextConnectionAsync(lnMaxWaitMs)
loTask.Run()

//   At this point, your application should load the URL in a browser.
//   For example,
//   in C#:  System.Diagnostics.Process.Start(urlForBrowser);
//   in Java: Desktop.getDesktop().browse(new URI(urlForBrowser));
//   in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
//                wsh.Run urlForBrowser
//   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...
// System.Diagnostics.Process.Start(urlForBrowser);

//  Wait for the listenSock's task to complete.
llSuccess = loTask.Wait(lnMaxWaitMs)
if (not llSuccess or (loTask.StatusInt <> 7) or (loTask.TaskSuccess <> .T.)) then
    if (not llSuccess) then
        //  The task.LastErrorText applies to the Wait method call.
        ? loTask.LastErrorText
    else
        //  The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection)
        ? loTask.Status
        ? loTask.ResultErrorText
    endif

    release loTask
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    return
endif

//  If we get to this point, the connection from the browser arrived and was accepted.

//  We no longer need the listen socket...
//  Close it so that it's no longer listening on port 3017.
loListenSock.Close(10)

//  The first thing to do is to get the connected socket.
loSock = createobject("CkSocket")
loSock.LoadTaskResult(loTask)
release loTask

//  Read the start line of the request..
lcStartLine = loSock.ReceiveUntilMatch(Chr(13) + Chr(10))
if (loSock.LastMethodSuccess <> .T.) then
    ? loSock.LastErrorText
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    release loSock
    return
endif

//  Read the request header.
lcRequestHeader = loSock.ReceiveUntilMatch(Chr(13) + Chr(10) + Chr(13) + Chr(10))
if (loSock.LastMethodSuccess <> .T.) then
    ? loSock.LastErrorText
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    release loSock
    return
endif

//  The browser SHOULD be sending us a GET request, and therefore there is no body to the request.
//  Once the request header is received, we have all of it.
//  We can now send our HTTP response.
loSbResponseHtml = createobject("CkStringBuilder")
loSbResponseHtml.Append("<html><body><p>Chilkat thanks you!</b></body</html>")

loSbResponse = createobject("CkStringBuilder")
loSbResponse.Append("HTTP/1.1 200 OK" + Chr(13) + Chr(10))
loSbResponse.Append("Content-Length: ")
loSbResponse.AppendInt(loSbResponseHtml.Length)
loSbResponse.Append(Chr(13) + Chr(10))
loSbResponse.Append("Content-Type: text/html" + Chr(13) + Chr(10))
loSbResponse.Append(Chr(13) + Chr(10))
loSbResponse.AppendSb(loSbResponseHtml)

loSock.SendString(loSbResponse.GetAsString())
loSock.Close(50)

//  The information we need is in the startLine.
//  For example, the startLine will look like this:
//   GET /?oauth_token=abcdRQAAZZAAxfBBAAABVabcd_k&oauth_verifier=9rdOq5abcdCe6cn8M3jabcdj3Eabcd HTTP/1.1
loSbStartLine = createobject("CkStringBuilder")
loSbStartLine.Append(lcStartLine)
lnNumReplacements = loSbStartLine.Replace("GET /?","")
lnNumReplacements = loSbStartLine.Replace(" HTTP/1.1","")
loSbStartLine.Trim()

//  oauth_token=qyprdP04IrTDIXtP1HRZz0geQdjXHVlGDxXPexlXZsjZNRcY&oauth_verifier=arx5pj5&realmId=193514465596199&dataSource=QBO
? "startline: " + loSbStartLine.GetAsString()

loHashTab1.Clear()
loHashTab1.AddQueryParams(loSbStartLine.GetAsString())

lcRequestToken = loHashTab1.LookupStr("oauth_token")
lcAuthVerifier = loHashTab1.LookupStr("oauth_verifier")

//  ------------------------------------------------------------------------------
//  Finally , we must exchange the OAuth Request Token for an OAuth Access Token.

loHttp.OAuthToken = lcRequestToken
loHttp.OAuthVerifier = lcAuthVerifier
loResp = loHttp.PostUrlEncoded(lcAccessTokenUrl,loReq)
if (loHttp.LastMethodSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    release loSock
    release loSbResponseHtml
    release loSbResponse
    release loSbStartLine
    return
endif

//  Make sure a successful response was received.
if (loResp.StatusCode <> 200) then
    ? loResp.StatusLine
    ? loResp.Header
    ? loResp.BodyStr
    release loHttp
    release loReq
    release loHashTab1
    release loSbUrlForBrowser
    release loListenSock
    release loSock
    release loSbResponseHtml
    release loSbResponse
    release loSbStartLine
    return
endif

//  If successful, the resp.BodyStr contains something like this:
//  oauth_token=12347455-ffffrrlaBdCjbdGfyjZabcdb5APNtuTPNabcdEpp&oauth_token_secret=RxxxxJ8mTzUhwES4xxxxuJyFWDN8ZfHmrabcddh88LmWE
? loResp.BodyStr

loHashTab2 = createobject("CkHashtable")
loHashTab2.AddQueryParams(loResp.BodyStr)

lcAccessToken = loHashTab2.LookupStr("oauth_token")
lcAccessTokenSecret = loHashTab2.LookupStr("oauth_token_secret")

release loResp

//  The access token + secret is what should be saved and used for
//  subsequent REST API calls.
? "Access Token = " + lcAccessToken
? "Access Token Secret = " + lcAccessTokenSecret

//  Save this access token for future calls.
loJson = createobject("CkJsonObject")
loJson.AppendString("oauth_token",lcAccessToken)
loJson.AppendString("oauth_token_secret",lcAccessTokenSecret)

//  Also save the realmId and dataSource from hashTab1.
lcRealmId = loHashTab1.LookupStr("realmId")
? "realmId = " + lcRealmId
lcDataSource = loHashTab1.LookupStr("dataSource")
? "dataSource = " + lcDataSource

loJson.AppendString("realmId",lcRealmId)
loJson.AppendString("dataSource",lcDataSource)

loFac = createobject("CkFileAccess")
loFac.WriteEntireTextFile("qa_data/tokens/quickbooks.json",loJson.Emit(),"utf-8",.F.)

? "Success."


release loHttp
release loReq
release loHashTab1
release loSbUrlForBrowser
release loListenSock
release loSock
release loSbResponseHtml
release loSbResponse
release loSbStartLine
release loHashTab2
release loJson
release loFac

 

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