sketch out transit-client API

bin/receive_file.py

@@ -2,25 +2,34 @@ from __future__ import print_function
 import os, sys, json
 from binascii import unhexlify
 from nacl.secret import SecretBox
-from .transcribe import Receiver
+from wormhole.blocking.transcribe import Receiver
+from wormhole.codes import input_code_with_completion
+from wormhole.blocking.transit import TransitReceiver
 
 APPID = "lothar.com/wormhole/file-xfer"
-RELAY = "example.com"
 
 # we're receiving
-code = sys.argv[1]
+transit_receiver = TransitReceiver()
-blob = b""
+direct_hints = transit_receiver.get_direct_hints()
-r = Receiver(APPID, blob, code)
+
+data = json.dumps({"direct_connection_hints": direct_hints,
+                   }).encode("utf-8")
+r = Receiver(APPID, data)
+r.set_code(r.input_code("Enter receive-text wormhole code: "))
+
 them_bytes = r.get_data()
 them_d = json.loads(them_bytes.decode("utf-8"))
 print("them: %r" % (them_d,))
+
 xfer_key = unhexlify(them_d["xfer_key"].encode("ascii"))
 filename = os.path.basename(them_d["filename"]) # unicode
 filesize = them_d["filesize"]
-relay = them_d["relay"].encode("ascii")
 
 # now receive the rest of the owl
-encrypted = RECEIVE(relay)
+transit_receiver.add_sender_direct_hints(them_d["direct_connection_hints"])
+transit_receiver.add_sender_relay_hints(them_d["relay_connection_hints"])
+transit_receiver.establish_connection(IDS)
+encrypted = transit_receiver.receive()
 
 decrypted = SecretBox(xfer_key).decrypt(encrypted)
 

bin/send_file.py

@@ -3,27 +3,31 @@ import os, sys, json
 from binascii import hexlify
 from nacl.secret import SecretBox
 from nacl import utils
-from .transcribe import Initiator
+from wormhole.blocking.transcribe import Initiator
+from wormhole.blocking.transit import TransitSender
 
 APPID = "lothar.com/wormhole/file-xfer"
-RELAY = "example.com"
 
 # we're sending
 filename = sys.argv[1]
 assert os.path.isfile(filename)
 xfer_key = utils.random(SecretBox.KEY_SIZE)
-blob = json.dumps({"xfer_key": hexlify(xfer_key),
+transit_sender = TransitSender()
+direct_hints = transit_sender.get_direct_hints()
+relay_hints = transit_sender.get_relay_hints()
+
+data = json.dumps({"xfer_key": hexlify(xfer_key),
                    "filename": os.path.basename(filename),
                    "filesize": os.stat(filename).st_size,
-                   "relay": RELAY,
+                   "direct_connection_hints": direct_hints,
+                   "relay_connection_hints": relay_hints,
                    }).encode("utf-8")
-i = Initiator(APPID, blob)
+
+i = Initiator(APPID, data)
 code = i.get_code()
+print("On the other computer, please run: receive_file")
 print("Wormhole code is '%s'" % code)
-print("On the other computer, please run:")
+print("")
-print()
-print(" wormhole-receive-file %s" % code)
-print()
 them_bytes = i.get_data()
 them_d = json.loads(them_bytes.decode("utf-8"))
 print("them: %r" % (them_d,))
@@ -34,6 +38,9 @@ with open(filename, "rb") as f:
 nonce = utils.random(SecretBox.NONCE_SIZE)
 encrypted = box.encrypt(plaintext, nonce)
 
-# now draw the rest of the owl
+transit_sender.add_receiver_hints(them_d["direct_connection_hints"])
-SEND(RELAY, encrypted)
+transit_sender.establish_connection(IDS)
+transit_sender.write(encrypted)
+transit_sender.close()
+
 print("file sent")

src/wormhole/blocking/transit.py

@@ -0,0 +1,30 @@
+
+class TransitSender:
+    def __init__(self, IDS):
+        pass
+    def get_direct_hints(self):
+        pass
+    def get_relay_hints(self):
+        return []
+    def add_receiver_hints(self, hints):
+        self.receiver_hints = hints
+    def establish_connection(self):
+        pass
+    def write(self, data):
+        pass
+    def close(self):
+        pass
+
+class TransitReceiver:
+    def __init__(self, IDS):
+        pass
+    def get_direct_hints(self):
+        pass
+    def add_sender_direct_hints(self, hints):
+        self.sender_direct_hints = hints
+    def add_sender_relay_hints(self, hints):
+        self.sender_relay_hints = hints
+    def establish_connection(self):
+        pass
+    def receive(self):
+        pass