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[tor-commits] [ooni-probe/master] Store tor exit router's ip and name with every request



commit b57552d009e6d8af08a66a88e01897faed5ba945
Author: Arun Pandian G <arunpandianp@xxxxxxxxx>
Date:   Tue Apr 8 03:12:12 2014 +0530

    Store tor exit router's ip and name with every request
---
 ooni/templates/httpt.py |   46 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 41 insertions(+), 5 deletions(-)

diff --git a/ooni/templates/httpt.py b/ooni/templates/httpt.py
index 403e222..c9e42bf 100644
--- a/ooni/templates/httpt.py
+++ b/ooni/templates/httpt.py
@@ -2,10 +2,14 @@ import copy
 import random
 import struct
 
+from zope.interface import implements
+
 from twisted.plugin import IPlugin
 from twisted.internet import protocol, defer
 from twisted.internet.ssl import ClientContextFactory
 
+from txtorcon.interface import IStreamListener
+
 from twisted.internet import reactor
 from twisted.internet.error import ConnectionRefusedError, DNSLookupError, TCPTimedOutError
 from twisted.internet.endpoints import TCP4ClientEndpoint
@@ -18,7 +22,6 @@ from ooni.utils import log
 from ooni.settings import config
 
 from ooni.utils.net import BodyReceiver, StringProducer, userAgents
-
 from ooni.utils.trueheaders import TrueHeaders
 from ooni.errors import handleAllFailures
 
@@ -26,6 +29,33 @@ from ooni.errors import handleAllFailures
 class InvalidSocksProxyOption(Exception):
     pass
 
+class StreamListener(object):
+    implements(IStreamListener)
+
+    def __init__(self, request):
+        self.request = request
+
+    def stream_new(self, stream):
+            pass
+
+    def stream_succeeded(self, stream):
+        host=self.request['url'].split('/')[2]
+        try:
+            if stream.target_host == host and len(self.request['tor']) == 1:
+                self.request['tor']['exit_ip'] = stream.circuit.path[-1].ip
+                self.request['tor']['exit_name'] = stream.circuit.path[-1].name
+        except:
+            log.err("Tor Exit ip detection failed")
+
+    def stream_attach(self, stream, circuit):
+            pass
+
+    def stream_closed(self, stream,**k):
+            pass
+
+    def stream_failed(self, stream, reason, remote_reason):
+            pass
+
 class HTTPTest(NetTestCase):
     """
     A utility class for dealing with HTTP based testing. It provides methods to
@@ -228,7 +258,7 @@ class HTTPTest(NetTestCase):
             content_length = int(response.headers.getRawHeaders('content-length')[0])
         except Exception:
             content_length = None
-        
+
         finished = defer.Deferred()
         response.deliverBody(BodyReceiver(finished, content_length))
         finished.addCallback(self._processResponseBody, request,
@@ -285,9 +315,11 @@ class HTTPTest(NetTestCase):
         request['url'] = url
         request['headers'] = headers
         request['body'] = body
-        request['tor'] = False
+        request['tor'] = {}
         if use_tor:
-            request['tor'] = True
+            request['tor']['is_tor'] = True
+        else:
+            request['tor']['is_tor'] = False
 
         if self.randomizeUA:
             log.debug("Randomizing user agent")
@@ -306,7 +338,7 @@ class HTTPTest(NetTestCase):
         headers = TrueHeaders(request['headers'])
 
         def errback(failure, request):
-            if request['tor']:
+            if request['tor']['is_tor']:
                 log.err("Error performing torified request: %s" % request['url'])
             else:
                 log.err("Error performing request: %s" % request['url'])
@@ -314,6 +346,10 @@ class HTTPTest(NetTestCase):
             self.addToReport(request, failure_string=failure_string)
             return failure
 
+        if use_tor:
+            state = config.tor_state
+            state.add_stream_listener(StreamListener(request))
+
         d = agent.request(request['method'], request['url'], headers,
                 body_producer)
         d.addErrback(errback, request)



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