Fix to support Autodesk Rivet and IronPython 2.7.3 or earlier

Author: artemlos

README.md

@@ -6,6 +6,8 @@ Python docs can be found here: https://help.cryptolens.io/api/python/
 
 **Autodesk Maya**: The Python2 version needs to be used, as described [here](https://cryptolens.io/2019/07/autodesk-maya-plugin-software-licensing/).
 
+**Autodesk Revit / Iron Python 2.7.3**: The Python2 version needs to be used with `HelperMethods.ironpython2730_legacy = True`.
+
 ## Installation
 
 ### Python 3
@@ -21,6 +23,12 @@ Please copy `cryptolens_python2.py` file into your project folder. The entire li
 from cryptolens_python2 import *
 ```
 
+If you create a plugin for Autodesk Rivet or use IronPython 2.7.3 or earlier, please also add the line below right after the import:
+
+```
+HelperMethods.ironpython2730_legacy = True
+```
+
 ## Example
 
 ### Key verification

cryptolens_python2.py

@@ -23,6 +23,7 @@
 class HelperMethods:
 
     server_address = "https://app.cryptolens.io/api/"
+    ironpython2730_legacy = False
 
     @staticmethod
     def get_SHA256(string):
@@ -118,10 +119,41 @@ def send_request(method, params):
         
             method: the path of the method, eg. key/activate
             params: a dictionary of parameters
-        """    
-        return urllib2.urlopen(HelperMethods.server_address + method, \
-                                      urllib.urlencode(params)).read().decode("utf-8")
-        
+        """
+
+        if HelperMethods.ironpython2730_legacy:
+            return HelperMethods.send_request_ironpythonlegacy(HelperMethods.server_address + method, \
+                                        urllib.urlencode(params))
+        else:
+            return urllib2.urlopen(HelperMethods.server_address + method, \
+                                        urllib.urlencode(params)).read().decode("utf-8")
+
+    @staticmethod
+    def send_request_ironpythonlegacy(uri, parameters):
+        """
+        IronPython 2.7.3 and earlier has a built in problem with
+        urlib2 library when verifying certificates. This code calls a .NET
+        library instead.
+        """
+        from System.Net import WebRequest
+        from System.IO import StreamReader
+        from System.Text import Encoding
+
+        request = WebRequest.Create(uri)
+        
+        request.ContentType = "application/x-www-form-urlencoded"
+        request.Method = "POST" #work for post
+        bytes = Encoding.ASCII.GetBytes(parameters)
+        request.ContentLength = bytes.Length
+        reqStream = request.GetRequestStream()
+        reqStream.Write(bytes, 0, bytes.Length)
+        reqStream.Close()
+            
+        response = request.GetResponse()
+        result = StreamReader(response.GetResponseStream()).ReadToEnd()
+        return result
+
+
     @staticmethod    
     def start_process(command):
 
@@ -187,8 +219,8 @@ def activate(token, rsa_pub_key, product_id, key, machine_code, fields_to_return
 
         response = Response("","",0,"")
 
-        try:
-            response = Response.from_string(HelperMethods.send_request("key/activate", {"token":token,\
+        #try:
+        response = Response.from_string(HelperMethods.send_request("key/activate", {"token":token,\
                                                   "ProductId":product_id,\
                                                   "key":key,\
                                                   "MachineCode":machine_code,\
@@ -198,8 +230,8 @@ def activate(token, rsa_pub_key, product_id, key, machine_code, fields_to_return
                                                   "MaxOverdraft": max_overdraft,\
                                                   "Sign":"True",\
                                                   "SignMethod":1}))
-        except Exception:
-            return (None, "Could not contact the server.")
+        #except Exception:
+        #    return (None, "Could not contact the server.")
 
         pubkey = RSAPublicKey.from_string(rsa_pub_key)
 

test.py

@@ -8,8 +8,9 @@
 from licensing.models import *
 from licensing.methods import Key, Helpers
 
+#from cryptolens_python2 import *
 pubKey = "<RSAKeyValue><Modulus>sGbvxwdlDbqFXOMlVUnAF5ew0t0WpPW7rFpI5jHQOFkht/326dvh7t74RYeMpjy357NljouhpTLA3a6idnn4j6c3jmPWBkjZndGsPL4Bqm+fwE48nKpGPjkj4q/yzT4tHXBTyvaBjA8bVoCTnu+LiC4XEaLZRThGzIn5KQXKCigg6tQRy0GXE13XYFVz/x1mjFbT9/7dS8p85n8BuwlY5JvuBIQkKhuCNFfrUxBWyu87CFnXWjIupCD2VO/GbxaCvzrRjLZjAngLCMtZbYBALksqGPgTUN7ZM24XbPWyLtKPaXF2i4XRR9u6eTj5BfnLbKAU5PIVfjIS+vNYYogteQ==</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>"
-
+#HelperMethods.ironpython2730_legacy = True
 res = Key.activate(token="WyIyNzMyIiwiYmx6NlJ6ZzdaWjFScmxFVFNCc283YTJyUG5kQURMZ0hucW1YdUZxKyJd",\
                    rsa_pub_key=pubKey,\
                    product_id=3349, key="ICVLD-VVSZR-ZTICT-YKGXL", machine_code=Helpers.GetMachineCode())