'''
unSSL.py

Copyright 2006 Andres Riancho

This file is part of w3af, w3af.sourceforge.net .

w3af is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation version 2 of the License.

w3af is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with w3af; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

'''

import core.controllers.outputManager as om
from core.controllers.basePlugin.baseAuditPlugin import baseAuditPlugin
import core.data.kb.knowledgeBase as kb
from core.controllers.w3afException import w3afException
import core.data.kb.vuln as vuln
from core.data.parsers.urlParser import *

class unSSL(baseAuditPlugin):
	'''
	This plugin checks if secure content can also be fetched using http.
	@author: Andres Riancho ( andres.riancho@gmail.com )
	'''

	def __init__(self):
		baseAuditPlugin.__init__(self)

	def _fuzzRequests(self, freq ):
		'''
		Check if https and fetch the same thing using http. 
		ie:
			input: https://a/
			check: http://a/
		
		@param freq: A fuzzableRequest
		'''

		if 'HTTPS' == getProtocol( freq.getURL() ).upper():
			secure = freq.getURL()
			unsecure = 'http://' + allButScheme(freq.getURL())
			
			httpsResponse = self._sendMutant( freq )
			freq.setURL( unsecure )
			httpResponse = self._sendMutant( freq )
			
			if httpResponse.getCode() == httpsResponse.getCode():
				if httpResponse.getBody() == httpsResponse.getBody():
					v = vuln.vuln( freq )
					v.setDesc( 'Secure content can be accesed using insecure protocol http. The URLs are: ' + secure + ' - ' + unsecure + ' .' )
					v.setId( httpResponse.id )
					kb.kb.append( self, 'unSSL', v )
					om.out.vulnerability( v.getDesc() )
	
	def _analyzeResult( self, fuzzableRequest, res ):
		pass
		
	def getOptionsXML(self):
		'''
		This method returns a XML containing the Options that the plugin has.
		Using this XML the framework will build a window, a menu, or some other input method to retrieve
		the info from the user. The XML has to validate against the xml schema file located at :
		w3af/core/ui/userInterface.dtd
		
		@return: XML with the plugin options.
		'''	
		return	'<?xml version="1.0" encoding="ISO-8859-1"?>\
		<OptionList>\
		</OptionList>\
		'

	def setOptions( self, OptionList ):
		'''
		This method sets all the options that are configured using the user interface 
		generated by the framework using the result of getOptionsXML().
		
		@parameter OptionList: A dictionary with the options for the plugin.
		@return: No value is returned.
		'''	
		pass

	def getPluginDeps( self ):
		'''
		@return: A list with the names of the plugins that should be runned before the
		current one.
		'''
		return []

	def getLongDesc( self ):
		'''
		@return: A DETAILED description of the plugin functions and features.
		'''
		return '''
		This plugin verifies that URL's that are available using HTTPS aren't available over an insecure
		HTTP protocol.

		To detect this, the plugin simply requests "https://abc/a.asp" and "http://abc.asp" and if both are 
		equal, a vulnerability is found.
		'''