args += [host]
args += ["python3", "-m", "pdm.sshsock", path]
self.proc = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True)
+ self.inbuf = bytearray()
fcntl.fcntl(self.proc.stdout, fcntl.F_SETFL, fcntl.fcntl(self.proc.stdout, fcntl.F_GETFL) | os.O_NONBLOCK)
+ head = self.recv(5)
+ if head != b"SSOCK":
+ raise socket.error("unexpected reply from %s: %r" % (host, head))
+ head = self.recv(1)
+ if head == b"+":
+ buf = b""
+ while True:
+ r = self.recv(1)
+ if r == b"":
+ raise socket.error("unexpected EOF in SSH socket stream")
+ elif r == b"\n":
+ break
+ buf += r
+ return
+ elif head == b"-":
+ buf = b""
+ while True:
+ r = self.recv(1)
+ if r in {b"\n", b""}:
+ break
+ buf += r
+ raise socket.error(buf.decode("utf-8"))
+ else:
+ raise socket.error("unexpected reply from %s: %r" % (host, head))
def close(self):
if self.proc is not None:
def send(self, data, flags = 0):
self.proc.stdin.write(data)
+ self.proc.stdin.flush()
return len(data)
def recv(self, buflen, flags = 0):
- if (flags & socket.MSG_DONTWAIT) == 0:
- select.select([self.proc.stdout], [], [])
- return self.proc.stdout.read(buflen)
+ while len(self.inbuf) == 0:
+ try:
+ rv = os.read(self.proc.stdout.fileno(), max(4096, buflen))
+ except BlockingIOError:
+ if flags & socket.MSG_DONTWAIT:
+ raise
+ select.select([self.proc.stdout], [], [])
+ else:
+ self.inbuf.extend(rv)
+ rv = bytes(self.inbuf[:buflen])
+ self.inbuf[:buflen] = b""
+ return rv
def fileno(self):
return self.proc.stdout.fileno()
fcntl.fcntl(sys.stdin.buffer, fcntl.F_SETFL, fcntl.fcntl(sys.stdin.buffer, fcntl.F_GETFL) | os.O_NONBLOCK)
sk = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
try:
- sk.connect(sys.argv[1])
+ try:
+ sk.connect(sys.argv[1])
+ except socket.error as err:
+ sys.stdout.write("SSOCK-connect: %s\n" % err)
+ sys.stdout.flush()
+ return
+ sys.stdout.write("SSOCK+\n")
+ sys.stdout.flush()
buf1 = b""
buf2 = b""
while True: