from __future__ import print_function import os, sys, io, json, binascii, six, tempfile, zipfile from twisted.protocols import basic from twisted.internet import reactor from twisted.internet.defer import inlineCallbacks, returnValue from ..errors import TransferError from .progress import ProgressPrinter from ..twisted.transcribe import Wormhole, WrongPasswordError from ..twisted.transit import TransitSender APPID = u"lothar.com/wormhole/text-or-file-xfer" def handle_zero(args): if args.zeromode: assert not args.code args.code = u"0-" def build_other_command(args): other_cmd = "wormhole receive" if args.verify: other_cmd = "wormhole --verify receive" if args.zeromode: other_cmd += " -0" return other_cmd def build_phase1_data(args): phase1 = {} text = args.text if text == "-": print(u"Reading text message from stdin..", file=args.stdout) text = sys.stdin.read() if not text and not args.what: text = six.moves.input("Text to send: ") if text is not None: print(u"Sending text message (%d bytes)" % len(text), file=args.stdout) phase1 = { "message": text } fd_to_send = None return phase1, fd_to_send what = os.path.join(args.cwd, args.what) what = what.rstrip(os.sep) if not os.path.exists(what): raise TransferError("Cannot send: no file/directory named '%s'" % args.what) basename = os.path.basename(what) if os.path.isfile(what): # we're sending a file filesize = os.stat(what).st_size phase1["file"] = { "filename": basename, "filesize": filesize, } print(u"Sending %d byte file named '%s'" % (filesize, basename), file=args.stdout) fd_to_send = open(what, "rb") return phase1, fd_to_send if os.path.isdir(what): print(u"Building zipfile..", file=args.stdout) # We're sending a directory. Create a zipfile in a tempdir and # send that. fd_to_send = tempfile.SpooledTemporaryFile() # TODO: I think ZIP_DEFLATED means compressed.. check it num_files = 0 num_bytes = 0 tostrip = len(what.split(os.sep)) with zipfile.ZipFile(fd_to_send, "w", zipfile.ZIP_DEFLATED) as zf: for path,dirs,files in os.walk(what): # path always starts with args.what, then sometimes might # have "/subdir" appended. We want the zipfile to contain # "" or "subdir" localpath = list(path.split(os.sep)[tostrip:]) for fn in files: archivename = os.path.join(*tuple(localpath+[fn])) localfilename = os.path.join(path, fn) zf.write(localfilename, archivename) num_bytes += os.stat(localfilename).st_size num_files += 1 fd_to_send.seek(0,2) filesize = fd_to_send.tell() fd_to_send.seek(0,0) phase1["directory"] = { "mode": "zipfile/deflated", "dirname": basename, "zipsize": filesize, "numbytes": num_bytes, "numfiles": num_files, } print(u"Sending directory (%d bytes compressed) named '%s'" % (filesize, basename), file=args.stdout) return phase1, fd_to_send raise TypeError("'%s' is neither file nor directory" % args.what) @inlineCallbacks def send_twisted(args, reactor=reactor): assert isinstance(args.relay_url, type(u"")) handle_zero(args) # TODO: parallelize the roundtrip that allocates the channel with the # (blocking) local IO (file os.stat, zipfile generation) phase1, fd_to_send = build_phase1_data(args) other_cmd = build_other_command(args) print(u"On the other computer, please run: %s" % other_cmd, file=args.stdout) tor_manager = None if args.tor: from ..twisted.tor_manager import TorManager tor_manager = TorManager(reactor, timing=args.timing) # For now, block everything until Tor has started. Soon: launch tor # in parallel with everything else, make sure the TorManager can # lazy-provide an endpoint, and overlap the startup process with the # user handing off the wormhole code yield tor_manager.start() w = Wormhole(APPID, args.relay_url, tor_manager, timing=args.timing, reactor=reactor) if fd_to_send: transit_sender = TransitSender(args.transit_helper, no_listen=args.no_listen, tor_manager=tor_manager, reactor=reactor, timing=args.timing) phase1["transit"] = transit_data = {} transit_data["relay_connection_hints"] = transit_sender.get_relay_hints() direct_hints = yield transit_sender.get_direct_hints() transit_data["direct_connection_hints"] = direct_hints if args.code: w.set_code(args.code) code = args.code else: code = yield w.get_code(args.code_length) if not args.zeromode: print(u"Wormhole code is: %s" % code, file=args.stdout) print(u"", file=args.stdout) # get the verifier, because that also lets us derive the transit key, # which we want to set before revealing the connection hints to the far # side, so we'll be ready for them when they connect verifier_bytes = yield w.get_verifier() verifier = binascii.hexlify(verifier_bytes).decode("ascii") if args.verify: while True: ok = six.moves.input("Verifier %s. ok? (yes/no): " % verifier) if ok.lower() == "yes": break if ok.lower() == "no": reject_data = json.dumps({"error": "verification rejected", }).encode("utf-8") yield w.send_data(reject_data) raise TransferError("verification rejected, abandoning transfer") if fd_to_send is not None: transit_key = w.derive_key(APPID+"/transit-key") transit_sender.set_transit_key(transit_key) my_phase1_bytes = json.dumps(phase1).encode("utf-8") yield w.send_data(my_phase1_bytes) try: them_phase1_bytes = yield w.get_data() except WrongPasswordError as e: raise TransferError(e.explain()) them_phase1 = json.loads(them_phase1_bytes.decode("utf-8")) if fd_to_send is None: if them_phase1["message_ack"] == "ok": print(u"text message sent", file=args.stdout) yield w.close() returnValue(0) # terminates this function raise TransferError("error sending text: %r" % (them_phase1,)) if "error" in them_phase1: raise TransferError("remote error, transfer abandoned: %s" % them_phase1["error"]) if them_phase1.get("file_ack") != "ok": raise TransferError("ambiguous response from remote, " "transfer abandoned: %s" % (them_phase1,)) tdata = them_phase1["transit"] yield w.close() yield _send_file_twisted(tdata, transit_sender, fd_to_send, args.stdout, args.hide_progress, args.timing) returnValue(0) class ProgressingFileSender(basic.FileSender): def __init__(self, filesize, stdout): self._sent = 0 self._progress = ProgressPrinter(filesize, stdout) self._progress.start() def progress(self, data): self._sent += len(data) self._progress.update(self._sent) return data def beginFileTransfer(self, file, consumer): d = basic.FileSender.beginFileTransfer(self, file, consumer, self.progress) d.addCallback(self.done) return d def done(self, res): self._progress.finish() return res @inlineCallbacks def _send_file_twisted(tdata, transit_sender, fd_to_send, stdout, hide_progress, timing): transit_sender.add_their_direct_hints(tdata["direct_connection_hints"]) transit_sender.add_their_relay_hints(tdata["relay_connection_hints"]) fd_to_send.seek(0,2) filesize = fd_to_send.tell() fd_to_send.seek(0,0) progress_stdout = stdout if hide_progress: progress_stdout = io.StringIO() record_pipe = yield transit_sender.connect() # record_pipe should implement IConsumer, chunks are just records print(u"Sending (%s).." % record_pipe.describe(), file=stdout) pfs = ProgressingFileSender(filesize, progress_stdout) _start = timing.add_event("tx file") yield pfs.beginFileTransfer(fd_to_send, record_pipe) timing.finish_event(_start) print(u"File sent.. waiting for confirmation", file=stdout) _start = timing.add_event("get ack") ack = yield record_pipe.receive_record() record_pipe.close() if ack != b"ok\n": timing.finish_event(_start, ack="failed") raise TransferError("Transfer failed (remote says: %r)" % ack) print(u"Confirmation received. Transfer complete.", file=stdout) timing.finish_event(_start, ack="ok")