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#!/usr/bin/env python
# vim: set fileencoding=utf-8
# vim: ts=4:sw=4:et:ai:sts=4
# Copyright © 2010 Martín Ferrari <martin.ferrari@gmail.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
import os, unittest, socket, sys, threading
from passfd import sendfd, recvfd
import _passfd
class TestPassfd(unittest.TestCase):
def readfd_test(self, fd):
s = os.read(fd, 512)
self.assertEquals(s, "\0" * 512)
def vrfy_recv(self, tuple, msg):
self.readfd_test(tuple[0])
self.assertEquals(tuple[1], msg)
def parent_tests(self, s, dgram = False):
# First message is not even sent
s.send("1")
self.vrfy_recv(recvfd(s), "a")
s.send("2")
self.vrfy_recv(recvfd(s), "\0")
s.send("3")
self.vrfy_recv(recvfd(s), "foobar")
s.send("4")
self.vrfy_recv(recvfd(s, msg_buf = 11), "long string") # is long
if not dgram:
self.assertEquals(s.recv(8), " is long") # re-sync
s.send("5")
self.assertEquals(s.recv(100), "foobar")
s.send("6")
self.assertRaises(RuntimeError, recvfd, s) # No fd received
#
s.send("7")
f, m = recvfd(s)
self.assertRaises(OSError, os.fdopen, f, "w")
s.send("8")
(f, msg) = recvfd(s)
self.assertEquals(msg, "writing")
os.write(f, "foo")
s.send("9")
def child_tests(self, s, dgram = False):
f = file("/dev/zero")
assert sendfd(s, f, "") == 0
s.recv(1)
assert sendfd(s, f, "a") == 1
s.recv(1)
assert sendfd(s, f, "\0") == 1
s.recv(1)
assert sendfd(s, f, "foobar") == 6
s.recv(1)
assert sendfd(s, f, "long string is long") == 19
# The other side will recv() instead of recvmsg(), this fd would be
# lost. I couldn't find any specification on this semantic
s.recv(1)
assert sendfd(s, f, "foobar") == 6
s.recv(1)
assert s.send("barbaz") == 6
# Try to write!
s.recv(1)
assert sendfd(s, f, "writing") == 7
s.recv(1)
f = file("/dev/null", "w")
assert sendfd(s, f, "writing") == 7
s.recv(1)
def test_sanity_checks(self):
self.assertRaises(TypeError, recvfd, "foo")
s = socket.socket(socket.AF_INET)
self.assertRaises(ValueError, recvfd, s)
(s0, s1) = socket.socketpair(socket.AF_UNIX, socket.SOCK_STREAM, 0)
f = file("/dev/zero")
sendfd(s0, f)
recvfd(s1)
# Using integers
sendfd(s0.fileno(), f.fileno())
recvfd(s1.fileno())
self.assertRaises(TypeError, sendfd, s0, "foo")
# Assuming fd 255 is not valid
self.assertRaises(OSError, sendfd, s0, 255)
def test_passfd_stream(self):
(s0, s1) = socket.socketpair(socket.AF_UNIX, socket.SOCK_STREAM, 0)
pid = os.fork()
if pid == 0:
s0.close()
self.child_tests(s1)
s1.close()
os._exit(0)
s1.close()
self.parent_tests(s0)
s0.close()
self.assertEquals(os.waitpid(pid, 0)[1], 0)
def test_passfd_dgram(self):
(s0, s1) = socket.socketpair(socket.AF_UNIX, socket.SOCK_DGRAM, 0)
pid = os.fork()
if pid == 0:
s0.close()
self.child_tests(s1, dgram = True)
s1.close()
os._exit(0)
s1.close()
self.parent_tests(s0, dgram = True)
s0.close()
self.assertEquals(os.waitpid(pid, 0)[1], 0)
def test_threading(self):
# Check that the GIL is correctly released before blocking
(s0, s1) = socket.socketpair(socket.AF_UNIX, socket.SOCK_STREAM, 0)
def run_server(s):
self.child_tests(s)
s.close()
t = threading.Thread(target = run_server, args = (s1,))
t.start()
self.parent_tests(s0)
s0.close()
t.join()
if __name__ == '__main__':
unittest.main()
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