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# $ ruby -Ilib -Itest -rrubygems test/test_forward.rb
# Tests for the following patch:
#
# http://github.com/net-ssh/net-ssh/tree/portfwfix
#
# It fixes 3 issues, regarding closing forwarded ports:
#
# 1.) if client closes a forwarded connection, but the server is reading, net-ssh terminates with IOError socket closed.
# 2.) if client force closes (RST) a forwarded connection, but server is reading, net-ssh terminates with
# 3.) if server closes the sending side, the on_eof is not handled.
#
# More info:
#
# http://net-ssh.lighthouseapp.com/projects/36253/tickets/7
require 'common'
require 'net/ssh/buffer'
require 'net/ssh'
require 'timeout'
require 'tempfile'
class TestForward < Test::Unit::TestCase
def localhost
'localhost'
end
def ssh_start_params
[localhost ,ENV['USER'], {:keys => "~/.ssh/id_rsa", :verbose => :debug}]
end
def find_free_port
server = TCPServer.open(0)
server.setsockopt(Socket::SOL_SOCKET,Socket::SO_REUSEADDR,true)
port = server.addr[1]
server.close
port
end
def start_server_sending_lot_of_data(exceptions)
server = TCPServer.open(0)
Thread.start do
loop do
Thread.start(server.accept) do |client|
begin
10000.times do |i|
client.puts "item#{i}"
end
client.close
rescue
exceptions << $!
raise
end
end
end
end
return server
end
def start_server_closing_soon(exceptions=nil)
server = TCPServer.open(0)
Thread.start do
loop do
Thread.start(server.accept) do |client|
begin
client.recv(1024)
client.setsockopt(Socket::SOL_SOCKET, Socket::SO_LINGER, [1, 0].pack("ii"))
client.close
rescue
exceptions << $!
raise
end
end
end
end
return server
end
def test_loop_should_not_abort_when_local_side_of_forward_is_closed
session = Net::SSH.start(*ssh_start_params)
server_exc = Queue.new
server = start_server_sending_lot_of_data(server_exc)
remote_port = server.addr[1]
local_port = find_free_port
session.forward.local(local_port, localhost, remote_port)
client_done = Queue.new
Thread.start do
begin
client = TCPSocket.new(localhost, local_port)
client.recv(1024)
client.close
sleep(0.2)
ensure
client_done << true
end
end
session.loop(0.1) { client_done.empty? }
assert_equal "Broken pipe", "#{server_exc.pop}" unless server_exc.empty?
end
def test_loop_should_not_abort_when_local_side_of_forward_is_reset
session = Net::SSH.start(*ssh_start_params)
server_exc = Queue.new
server = start_server_sending_lot_of_data(server_exc)
remote_port = server.addr[1]
local_port = find_free_port
session.forward.local(local_port, localhost, remote_port)
client_done = Queue.new
Thread.start do
begin
client = TCPSocket.new(localhost, local_port)
client.recv(1024)
client.setsockopt(Socket::SOL_SOCKET, Socket::SO_LINGER, [1, 0].pack("ii"))
client.close
sleep(0.1)
ensure
client_done << true
end
end
session.loop(0.1) { client_done.empty? }
assert_equal "Broken pipe", "#{server_exc.pop}" unless server_exc.empty?
end
def create_local_socket(&blk)
tempfile = Tempfile.new("net_ssh_forward_test")
path = tempfile.path
tempfile.delete
yield UNIXServer.open(path)
File.delete(path)
end if defined?(UNIXServer)
def test_forward_local_unix_socket_to_remote_port
session = Net::SSH.start(*ssh_start_params)
server_exc = Queue.new
server = start_server_sending_lot_of_data(server_exc)
remote_port = server.addr[1]
client_data = nil
create_local_socket do |local_socket|
session.forward.local(local_socket, localhost, remote_port)
client_done = Queue.new
Thread.start do
begin
client = UNIXSocket.new(local_socket.path)
client_data = client.recv(1024)
client.close
sleep(0.2)
ensure
client_done << true
end
end
session.loop(0.1) { client_done.empty? }
end
assert_not_nil(client_data, "client should have received data")
assert(client_data.match(/item\d/), 'client should have received the string item')
end if defined?(UNIXSocket)
def test_loop_should_not_abort_when_server_side_of_forward_is_closed
session = Net::SSH.start(*ssh_start_params)
server = start_server_closing_soon
remote_port = server.addr[1]
local_port = find_free_port
session.forward.local(local_port, localhost, remote_port)
client_done = Queue.new
Thread.start do
begin
client = TCPSocket.new(localhost, local_port)
1.times do |i|
client.puts "item#{i}"
end
client.close
sleep(0.1)
ensure
client_done << true
end
end
session.loop(0.1) { client_done.empty? }
end
def start_server
server = TCPServer.open(0)
Thread.start do
loop do
Thread.start(server.accept) do |client|
yield(client)
end
end
end
return server
end
def test_server_eof_should_be_handled
session = Net::SSH.start(*ssh_start_params)
server = start_server do |client|
client.write "This is a small message!"
client.close
end
client_done = Queue.new
client_exception = Queue.new
client_data = Queue.new
remote_port = server.addr[1]
local_port = find_free_port
session.forward.local(local_port, localhost, remote_port)
Thread.start do
begin
client = TCPSocket.new(localhost, local_port)
data = client.read(4096)
client.close
client_done << data
rescue
client_done << $!
end
end
timeout(5) do
session.loop(0.1) { client_done.empty? }
assert_equal "This is a small message!", client_done.pop
end
end
end
|
