add CLI args to override the relay hosts (rendezvous and transit)

src/wormhole/blocking/transcribe.py

@@ -5,9 +5,8 @@ from spake2 import SPAKE2_A, SPAKE2_B
 from nacl.secret import SecretBox
 from nacl.exceptions import CryptoError
 from nacl import utils
-from .. import codes
+from .. import codes, const
 from ..util.hkdf import HKDF
-from ..const import RENDEZVOUS_RELAY
 
 SECOND = 1
 MINUTE = 60*SECOND
@@ -164,11 +163,11 @@ class Common:
         return HKDF(self.key, length, CTXinfo=purpose)
 
 class Initiator(Common):
-    def __init__(self, appid, data, relay=RENDEZVOUS_RELAY):
+    def __init__(self, appid, data, relay=None):
         self.appid = appid
         self.data = data
-        assert relay.endswith("/")
+        self.relay = relay or const.RENDEZVOUS_RELAY
-        self.relay = relay
+        assert self.relay.endswith("/")
         self.started = time.time()
         self.wait = 0.5*SECOND
         self.timeout = 3*MINUTE
@@ -204,11 +203,11 @@ class Initiator(Common):
 
 
 class Receiver(Common):
-    def __init__(self, appid, data, relay=RENDEZVOUS_RELAY):
+    def __init__(self, appid, data, relay=None):
         self.appid = appid
         self.data = data
-        self.relay = relay
+        self.relay = relay or const.RENDEZVOUS_RELAY
-        assert relay.endswith("/")
+        assert self.relay.endswith("/")
         self.started = time.time()
         self.wait = 0.5*SECOND
         self.timeout = 3*MINUTE

src/wormhole/blocking/transit.py

@@ -2,9 +2,9 @@ from __future__ import print_function
 import re, time, threading, socket, SocketServer
 from binascii import hexlify, unhexlify
 from nacl.secret import SecretBox
+from .. import const
 from ..util import ipaddrs
 from ..util.hkdf import HKDF
-from ..const import TRANSIT_RELAY
 
 class TransitError(Exception):
     pass
@@ -270,7 +270,8 @@ class RecordPipe:
         self.skt.close()
 
 class Common:
-    def __init__(self):
+    def __init__(self, transit_relay=None):
+        self._transit_relay = transit_relay or const.TRANSIT_RELAY
         self.winning = threading.Event()
         self._negotiation_check_lock = threading.Lock()
         self._have_transit_key = threading.Condition()
@@ -291,7 +292,7 @@ class Common:
     def get_direct_hints(self):
         return self.my_direct_hints
     def get_relay_hints(self):
-        return [TRANSIT_RELAY]
+        return [self._transit_relay]
 
     def add_their_direct_hints(self, hints):
         self._their_direct_hints = [force_ascii(h) for h in hints]

src/wormhole/scripts/cmd_receive_file.py

@@ -8,7 +8,7 @@ APPID = "lothar.com/wormhole/file-xfer"
 
 def receive_file(so):
     # we're receiving
-    transit_receiver = TransitReceiver()
+    transit_receiver = TransitReceiver(transit_relay=so.parent["transit-helper"])
 
     mydata = json.dumps({
         "transit": {
@@ -16,7 +16,7 @@ def receive_file(so):
             "relay_connection_hints": transit_receiver.get_relay_hints(),
             },
         }).encode("utf-8")
-    r = Receiver(APPID, mydata)
+    r = Receiver(APPID, mydata, so.parent["relay-url"])
     code = so["code"]
     if not code:
         code = r.input_code("Enter receive-file wormhole code: ")

src/wormhole/scripts/cmd_receive_text.py

@@ -7,7 +7,7 @@ APPID = "lothar.com/wormhole/text-xfer"
 def receive_text(so):
     # we're receiving
     data = json.dumps({"message": "ok"}).encode("utf-8")
-    r = Receiver(APPID, data)
+    r = Receiver(APPID, data, so.parent["relay-url"])
     code = so["code"]
     if not code:
         code = r.input_code("Enter receive-text wormhole code: ")

src/wormhole/scripts/cmd_send_file.py

@@ -10,7 +10,7 @@ def send_file(so):
     # we're sending
     filename = so["filename"]
     assert os.path.isfile(filename)
-    transit_sender = TransitSender()
+    transit_sender = TransitSender(transit_relay=so.parent["transit-helper"])
 
     filesize = os.stat(filename).st_size
     data = json.dumps({
@@ -24,7 +24,7 @@ def send_file(so):
             },
         }).encode("utf-8")
 
-    i = Initiator(APPID, data)
+    i = Initiator(APPID, data, so.parent["relay-url"])
     code = i.get_code()
     print("On the other computer, please run: wormhole receive-file")
     print("Wormhole code is '%s'" % code)

src/wormhole/scripts/cmd_send_text.py

@@ -9,7 +9,7 @@ def send_text(so):
     message = so["text"]
     data = json.dumps({"message": message,
                        }).encode("utf-8")
-    i = Initiator(APPID, data)
+    i = Initiator(APPID, data, so.parent["relay-url"])
     code = i.get_code()
     print("On the other computer, please run: wormhole receive-text")
     print("Wormhole code is: %s" % code)

src/wormhole/scripts/runner.py

@@ -1,5 +1,6 @@
 import sys
 from twisted.python import usage
+from .. import const
 
 class SendTextOptions(usage.Options):
     def parseArgs(self, text):
@@ -26,6 +27,12 @@ class ReceiveFileOptions(usage.Options):
 
 class Options(usage.Options):
     synopsis = "\nUsage: wormhole <command>"
+    optParameters = [
+        ["relay-url", None, const.RENDEZVOUS_RELAY,
+         "rendezvous relay to use (URL)"],
+        ["transit-helper", None, const.TRANSIT_RELAY,
+         "transit relay to use (tcp:HOST:PORT)"],
+        ]
     subCommands = [("send-text", None, SendTextOptions, "Send a text message"),
                    ("send-file", None, SendFileOptions, "Send a file"),
                    ("receive-text", None, ReceiveTextOptions, "Receive a text message"),