/usr/share/w3af/plugins/mangle/sed.py is in w3af-console 1.1svn5547-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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sed.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
# options
from core.data.options.option import option
from core.data.options.optionList import optionList
from core.controllers.basePlugin.baseManglePlugin import baseManglePlugin
from core.controllers.basePlugin.baseManglePlugin import headersToString, stringToHeaders
import re
from core.controllers.w3afException import w3afException
from core.data.request.frFactory import create_fuzzable_request
class sed(baseManglePlugin):
'''
This plugin is a "stream editor" for http requests and responses.
@author: Andres Riancho ( andres.riancho@gmail.com )
'''
def __init__(self):
baseManglePlugin.__init__(self)
self._req_body_manglers = []
self._req_head_manglers = []
self._res_body_manglers = []
self._res_head_manglers = []
# User options
self._user_option_fix_content_len = True
self._priority = 20
self._expressions = ''
def mangleRequest(self, request):
'''
This method mangles the request.
@param request: This is the request to mangle.
@return: A mangled version of the request.
'''
data = request.getData()
for regex, string in self._req_body_manglers:
data = regex.sub(string, data)
header_string = headersToString(request.getHeaders())
for regex, string in self._req_head_manglers:
header_string = regex.sub(string, header_string)
header_dict = stringToHeaders(header_string)
return create_fuzzable_request(
request.getURL(),
request.getMethod(),
data, header_dict
)
def mangleResponse(self, response):
'''
This method mangles the response.
@param response: This is the response to mangle.
@return: A mangled version of the response.
'''
body = response.getBody()
for regex, string in self._res_body_manglers:
body = regex.sub(string, body)
response.setBody(body)
header_string = headersToString(response.getHeaders())
for regex, string in self._res_head_manglers:
header_string = regex.sub(string, header_string)
response.setHeaders(stringToHeaders(header_string))
if self._res_body_manglers and self._user_option_fix_content_len:
response = self._fixContentLen(response)
return response
def setOptions( self, OptionList ):
'''
Sets the Options given on the OptionList to self. The options are the result of a user
entering some data on a window that was constructed using the XML Options that was
retrieved from the plugin using getOptions()
This method MUST be implemented on every plugin.
@return: No value is returned.
'''
self._user_option_fix_content_len = OptionList['fixContentLen'].getValue()
self._priority = OptionList['priority'].getValue()
self._expressions = ','.join( OptionList['expressions'].getValue() )
self._expressions = re.findall( '([qs])([bh])/(.*?)/(.*?)/;?' , self._expressions )
if len( self._expressions ) == 0 and len ( OptionList['expressions'].getValue() ) != 0:
raise w3afException('The user specified expression is invalid.')
for exp in self._expressions:
if exp[0] not in ['q', 's']:
msg = 'The first letter of the sed expression should be q(reQuest) or s(reSponse).'
raise w3afException( msg )
if exp[1] not in ['b', 'h']:
msg = 'The second letter of the sed expression should be b(body) or h(header).'
raise w3afException( msg )
try:
regex = re.compile( exp[2] )
except:
raise w3afException('Invalid regular expression in sed plugin.')
if exp[0] == 'q':
# The expression mangles the request
if exp[1] == 'b':
self._req_body_manglers.append( (regex, exp[3]) )
else:
self._req_head_manglers.append( (regex, exp[3]) )
else:
# The expression mangles the response
if exp[1] == 'b':
self._res_body_manglers.append( (regex, exp[3]) )
else:
self._res_head_manglers.append( (regex, exp[3]) )
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
d1 = 'Stream edition expressions'
h1 = 'Stream edition expressions are strings that tell the sed plugin what to change.'
h1 += ' Sed plugin uses regular expressions, some examples: \n - qh/User/NotLuser/ ;'
h1 += ' This will make sed search in the the re[q]uest [h]eader for the string User'
h1 += ' and replace it with NotLuser.\n - sb/[fF]orm/form ; This will make sed search'
h1 += ' in the re[s]ponse [b]ody for the strings form or Form and replace it with form.'
h1 += ' Multiple expressions can be specified separated by commas.'
o1 = option('expressions', self._expressions, d1, 'list', help=h1)
d2 = 'Fix the content length header after mangling'
o2 = option('fixContentLen', self._user_option_fix_content_len, d2, 'boolean')
d3 = 'Plugin execution priority'
h3 = 'Mangle plugins are ordered using the priority parameter'
o3 = option('priority', self._priority, d3, 'integer', help=h3)
ol = optionList()
ol.add(o1)
ol.add(o2)
ol.add(o3)
return ol
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be run before the
current one.
'''
return []
def getPriority( self ):
'''
This function is called when sorting mangle plugins.
Each mangle plugin should implement this.
@return: An integer specifying the priority. 100 is run first, 0 last.
'''
return self._priority
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return '''
This plugin is a stream editor for web requests and responses.
Three configurable parameters exist:
- priority
- expressions
- fixContentLen
Stream edition expressions are strings that tell the sed plugin what to change. Sed plugin
uses regular expressions, some examples:
- qh/User/NotLuser/
This will make sed search in the the re[q]uest [h]eader for the string User and
replace it with NotLuser.
- sb/[fF]orm/form
This will make sed search in the re[s]ponse [b]ody for the strings form or Form
and replace it with form.
Multiple expressions can be specified separated by commas.
'''
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