Add close_foo functions to TorControl

svn:r3929

1 files changed, 99 insertions, 0 deletions

diff --git a/contrib/PathDemo.py b/contrib/PathDemo.py
new file mode 100644
index 0000000000..f3c991e0bf
--- /dev/null
+++ b/contrib/PathDemo.py
@@ -0,0 +1,99 @@
+#!/usr/bin/python
+
+import TorControl
+import threading
+import socket
+import struct
+import random
+
+circuits = {}
+streams = {}
+
+def runControl(s):
+    pendingEvents = [] #XXX This tric. should become standard
+    TorControl._event_handler = pendingEvents.append
+    TorControl.set_events(s,
+                          [TorControl.EVENT_TYPE.CIRCSTATUS,
+                           TorControl.EVENT_TYPE.STREAMSTATUS])
+    TorControl.set_option(s,"__LeaveStreamsUnattached 1")
+    while 1:
+        e = pendingEvents[:]
+        del pendingEvents[:]
+        for ev in e:
+            handleEvent(s, ev)
+        _, tp, body = TorControl.receive_message(s)
+        if tp == TorControl.MSG_TYPE.EVENT:
+            handleEvent(s, body)
+
+
+def parsePath(name):
+    assert name.endswith(".path")
+    items = name.split(".")
+    try:
+        n = int(items[-2])
+    except:
+        return None,None
+    path = items[-(2+n):-2]
+    host = items[:-(2+n)]
+    print path,host
+    return path,".".join(host)
+
+def handleEvent(s,body):
+    event, args = TorControl.unpack_event(body)
+    if event == TorControl.EVENT_TYPE.STREAMSTATUS:
+        status, ident, target = args
+        print "Got stream event:",TorControl.STREAM_STATUS.nameOf[status],\
+              ident,target
+        if status in (TorControl.STREAM_STATUS.NEW_CONNECT,
+                      TorControl.STREAM_STATUS.NEW_RESOLVE):
+            target,port=target.split(":")
+            if not target.endswith(".path"):
+                TorControl.attach_stream(s, ident, 0)
+            else:
+                path,host = parsePath(target)
+                #XXXX Don't launch so many circuits!
+                streams[ident] = path,host
+                circid = TorControl.extend_circuit(s, 0, path)
+                circuits[circid] = path
+        elif status == TorControl.STREAM_STATUS.DETACHED:
+            if not streams.has_key(ident):
+                TorControl.attach_stream(s, ident, 0)
+            else:
+                TorControl.close_stream(s, ident, 1)
+    elif event == TorControl.EVENT_TYPE.CIRCSTATUS:
+        status, ident, path = args
+        print "Got circuit event",TorControl.CIRC_STATUS.nameOf[status],\
+              ident,path
+        if not circuits.has_key(ident):
+            return
+        if status in (TorControl.CIRC_STATUS.CLOSED,
+                      TorControl.CIRC_STATUS.FAILED):
+            ok = 0
+        elif status == TorControl.CIRC_STATUS.BUILT:
+            ok = 1
+        else:
+            return
+
+        ids = [ streamID for (streamID, (path,host)) in streams.items()
+                if path == circuits[ident] ]
+
+        for streamID in ids:
+            if ok:
+                _,host = streams[streamID]
+                TorControl.redirect_stream(s, streamID, host)
+                TorControl.attach_stream(s, streamID, ident)
+                #XXXX Don't do this twice.
+            else:
+                TorControl.close_stream(s, streamID, 1)
+        if not ok:
+            del circuits[ident]
+
+
+def run():
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.connect(("127.0.0.1", 9051))
+    TorControl.authenticate(s)
+    runControl(s)
+
+if __name__ == '__main__':
+    run()