(Chilkat2-Python) Quickbooks OAuth1 Authorization (3-legged)

Demonstrates 3-legged OAuth1 authorization for Quickbooks.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

consumerKey = "QUICKBOOKS_CONSUMER_KEY"
consumerSecret = "QUICKBOOKS_CONSUMER_SECRET"

requestTokenUrl = "https://oauth.intuit.com/oauth/v1/get_request_token"
authorizeUrl = "https://appcenter.intuit.com/Connect/Begin"
accessTokenUrl = "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..
callbackUrl = "http://localhost:3017/"
callbackLocalPort = 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
http = chilkat2.Http()

http.OAuth1 = True
http.OAuthConsumerKey = consumerKey
http.OAuthConsumerSecret = consumerSecret
http.OAuthCallback = callbackUrl

req = chilkat2.HttpRequest()
# resp is a CkHttpResponse
resp = http.PostUrlEncoded(requestTokenUrl,req)
if (http.LastMethodSuccess != True):
    print(http.LastErrorText)
    sys.exit()

if (resp.StatusCode >= 400):
    print("Error response status code = " + str(resp.StatusCode))
    print(resp.BodyStr)
    sys.exit()

# If successful, the resp.BodyStr contains this:  
# oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
print(resp.BodyStr)

hashTab1 = chilkat2.Hashtable()
hashTab1.AddQueryParams(resp.BodyStr)

requestToken = hashTab1.LookupStr("oauth_token")
requestTokenSecret = hashTab1.LookupStr("oauth_token_secret")
http.OAuthTokenSecret = requestTokenSecret

print("oauth_token = " + requestToken)
print("oauth_token_secret = " + requestTokenSecret)

# ---------------------------------------------------------------------------
# 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.
sbUrlForBrowser = chilkat2.StringBuilder()
sbUrlForBrowser.Append(authorizeUrl)
sbUrlForBrowser.Append("?oauth_token=")
sbUrlForBrowser.Append(requestToken)
urlForBrowser = sbUrlForBrowser.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.
listenSock = chilkat2.Socket()

backLog = 5
success = listenSock.BindAndListen(callbackLocalPort,backLog)
if (success != True):
    print(listenSock.LastErrorText)
    sys.exit()

# 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.
maxWaitMs = 60000
# task is a CkTask
task = listenSock.AcceptNextConnectionAsync(maxWaitMs)
task.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
# in Xojo: ShowURL(url)  (see http://docs.xojo.com/index.php/ShowURL)
# in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl        
#  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.
success = task.Wait(maxWaitMs)
if (not success or (task.StatusInt != 7) or (task.TaskSuccess != True)):
    if (not success):
        # The task.LastErrorText applies to the Wait method call.
        print(task.LastErrorText)
    else:
        # The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection)
        print(task.Status)
        print(task.ResultErrorText)

    sys.exit()

# 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.
listenSock.Close(10)

# The first thing to do is to get the connected socket.
sock = chilkat2.Socket()
sock.LoadTaskResult(task)

# Read the start line of the request..
startLine = sock.ReceiveUntilMatch("\r\n")
if (sock.LastMethodSuccess != True):
    print(sock.LastErrorText)
    sys.exit()

# Read the request header.
requestHeader = sock.ReceiveUntilMatch("\r\n\r\n")
if (sock.LastMethodSuccess != True):
    print(sock.LastErrorText)
    sys.exit()

# 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.
sbResponseHtml = chilkat2.StringBuilder()
sbResponseHtml.Append("<html><body><p>Chilkat thanks you!</b></body</html>")

sbResponse = chilkat2.StringBuilder()
sbResponse.Append("HTTP/1.1 200 OK\r\n")
sbResponse.Append("Content-Length: ")
sbResponse.AppendInt(sbResponseHtml.Length)
sbResponse.Append("\r\n")
sbResponse.Append("Content-Type: text/html\r\n")
sbResponse.Append("\r\n")
sbResponse.AppendSb(sbResponseHtml)

sock.SendString(sbResponse.GetAsString())
sock.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
sbStartLine = chilkat2.StringBuilder()
sbStartLine.Append(startLine)
numReplacements = sbStartLine.Replace("GET /?","")
numReplacements = sbStartLine.Replace(" HTTP/1.1","")
sbStartLine.Trim()

# oauth_token=qyprdP04IrTDIXtP1HRZz0geQdjXHVlGDxXPexlXZsjZNRcY&oauth_verifier=arx5pj5&realmId=193514465596199&dataSource=QBO
print("startline: " + sbStartLine.GetAsString())

hashTab1.Clear()
hashTab1.AddQueryParams(sbStartLine.GetAsString())

requestToken = hashTab1.LookupStr("oauth_token")
authVerifier = hashTab1.LookupStr("oauth_verifier")

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

http.OAuthToken = requestToken
http.OAuthVerifier = authVerifier
# resp is a CkHttpResponse
resp = http.PostUrlEncoded(accessTokenUrl,req)
if (http.LastMethodSuccess != True):
    print(http.LastErrorText)
    sys.exit()

# Make sure a successful response was received.
if (resp.StatusCode != 200):
    print(resp.StatusLine)
    print(resp.Header)
    print(resp.BodyStr)
    sys.exit()

# If successful, the resp.BodyStr contains something like this:
# oauth_token=12347455-ffffrrlaBdCjbdGfyjZabcdb5APNtuTPNabcdEpp&oauth_token_secret=RxxxxJ8mTzUhwES4xxxxuJyFWDN8ZfHmrabcddh88LmWE
print(resp.BodyStr)

hashTab2 = chilkat2.Hashtable()
hashTab2.AddQueryParams(resp.BodyStr)

accessToken = hashTab2.LookupStr("oauth_token")
accessTokenSecret = hashTab2.LookupStr("oauth_token_secret")

# The access token + secret is what should be saved and used for
# subsequent REST API calls.
print("Access Token = " + accessToken)
print("Access Token Secret = " + accessTokenSecret)

# Save this access token for future calls.
json = chilkat2.JsonObject()
json.AppendString("oauth_token",accessToken)
json.AppendString("oauth_token_secret",accessTokenSecret)

# Also save the realmId and dataSource from hashTab1.
realmId = hashTab1.LookupStr("realmId")
print("realmId = " + realmId)
dataSource = hashTab1.LookupStr("dataSource")
print("dataSource = " + dataSource)

json.AppendString("realmId",realmId)
json.AppendString("dataSource",dataSource)

fac = chilkat2.FileAccess()
fac.WriteEntireTextFile("qa_data/tokens/quickbooks.json",json.Emit(),"utf-8",False)

print("Success.")