Commit | Line | Data |
---|---|---|
b4cc75dc FT |
1 | import sys, os |
2 | import subprocess, socket, fcntl, select | |
3 | ||
4 | class sshsocket(object): | |
5 | def __init__(self, host, path, user = None, port = None): | |
6 | args = ["ssh"] | |
7 | if user is not None: | |
8 | args += ["-u", str(user)] | |
9 | if port is not None: | |
10 | args += ["-p", str(int(port))] | |
11 | args += [host] | |
12 | args += ["python", "-m", "pdm.sshsock", path] | |
13 | self.proc = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True) | |
14 | fcntl.fcntl(self.proc.stdout, fcntl.F_SETFL, fcntl.fcntl(self.proc.stdout, fcntl.F_GETFL) | os.O_NONBLOCK) | |
34a3ccd6 FT |
15 | head = self.recv(5) |
16 | if head != "SSOCK": | |
17 | raise socket.error("unexpected reply from %s: %r" % (host, head)) | |
18 | head = self.recv(1) | |
19 | if head == "+": | |
20 | return | |
21 | elif head == "-": | |
22 | buf = "" | |
23 | while True: | |
24 | r = self.recv(1) | |
25 | if r in ("\n", ""): | |
26 | break | |
27 | buf += r | |
28 | raise socket.error(buf) | |
29 | else: | |
30 | raise socket.error("unexpected reply from %s: %r" % (host, head)) | |
b4cc75dc FT |
31 | |
32 | def close(self): | |
33 | if self.proc is not None: | |
34 | self.proc.stdin.close() | |
35 | self.proc.stdout.close() | |
36 | self.proc.wait() | |
37 | self.proc = None | |
38 | ||
39 | def send(self, data, flags = 0): | |
40 | self.proc.stdin.write(data) | |
41 | return len(data) | |
42 | ||
43 | def recv(self, buflen, flags = 0): | |
44 | if (flags & socket.MSG_DONTWAIT) == 0: | |
45 | select.select([self.proc.stdout], [], []) | |
46 | return self.proc.stdout.read(buflen) | |
47 | ||
48 | def fileno(self): | |
49 | return self.proc.stdout.fileno() | |
50 | ||
51 | def __del__(self): | |
52 | self.close() | |
53 | ||
54 | def cli(): | |
55 | fcntl.fcntl(sys.stdin, fcntl.F_SETFL, fcntl.fcntl(sys.stdin, fcntl.F_GETFL) | os.O_NONBLOCK) | |
56 | sk = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) | |
57 | try: | |
34a3ccd6 FT |
58 | try: |
59 | sk.connect(sys.argv[1]) | |
60 | except socket.error as err: | |
61 | sys.stdout.write("SSOCK-connect: %s\n" % err) | |
62 | return | |
63 | sys.stdout.write("SSOCK+\n") | |
b4cc75dc FT |
64 | buf1 = "" |
65 | buf2 = "" | |
66 | while True: | |
67 | wfd = [] | |
68 | if buf1: wfd.append(sk) | |
69 | if buf2: wfd.append(sys.stdout) | |
70 | rfd, wfd, efd = select.select([sk, sys.stdin], wfd, []) | |
71 | if sk in rfd: | |
72 | ret = sk.recv(65536) | |
73 | if ret == "": | |
74 | break | |
75 | else: | |
76 | buf2 += ret | |
77 | if sys.stdin in rfd: | |
78 | ret = sys.stdin.read() | |
79 | if ret == "": | |
80 | break | |
81 | else: | |
82 | buf1 = ret | |
83 | if sk in wfd: | |
84 | ret = sk.send(buf1) | |
85 | buf1 = buf1[ret:] | |
86 | if sys.stdout in wfd: | |
87 | sys.stdout.write(buf2) | |
88 | sys.stdout.flush() | |
89 | buf2 = "" | |
90 | finally: | |
91 | sk.close() | |
92 | ||
93 | if __name__ == "__main__": | |
94 | cli() |