'''
exchangableMethods.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

'''

from core.data.request.httpPostDataRequest import httpPostDataRequest
from core.data.request.httpQsRequest import httpQsRequest

def isExchangable( self, fuzzableRequest ):
	'''
	This "function" is to be used in a plugin like this:
	
	from core.data.exchangableMethods import *
	class plugin(baseAuditPlugin):
		def __init__(self):
			self.isExchangable = isExchangable
	
	@parameter mutant: The mutant you want to test if sending using querystring or postdata is the same.
	@return: [True|False]
	'''
	if not ( isinstance( fuzzableRequest, httpQsRequest ) or isinstance( fuzzableRequest, httpPostDataRequest ) ) :
		return False
		
	# I get the mutant as it is
	response = self._sendMutant( fuzzableRequest, analyze=False )
	if fuzzableRequest.getMethod() == 'GET':
		# I have to create a httpPostDataRequest and set all the parameters to it.
		pdr = httpPostDataRequest()
		pdr.setURL( fuzzableRequest.getURL() )
		pdr.setDc( fuzzableRequest.getDc() )
		pdr.setHeaders( fuzzableRequest.getHeaders() )
		pdr.setCookie( fuzzableRequest.getCookie() )
		response2 = self._sendMutant( pdr, analyze=False )
		
		if response2.getBody() == response.getBody():
			return True
	
	elif fuzzableRequest.getMethod() == 'POST':
		# I have to create a httpQsRequest and set all the parameters to it.
		qsr = httpQsRequest()
		qsr.setURL( fuzzableRequest.getURL() )
		qsr.setDc( fuzzableRequest.getDc() )
		qsr.setHeaders( fuzzableRequest.getHeaders() )
		qsr.setCookie( fuzzableRequest.getCookie() )
		response2 = self._sendMutant( qsr, analyze=False )
		
		if response2.getBody() == response.getBody():
			return True	
	
	else:
		return False