def loop(self):
chan = self.chan
master_fd = self.master_fd
fds = [master_fd, chan]
while master_fd or chan.active:
try:
rfds, wfds, xfds = select.select(fds, [], [], 5)
except:
log.exception('Exception in PTYWrapper.loop():')
break
if master_fd in rfds:
try:
data = pty._read(master_fd)
except OSError:
break
if data == '':
break
chan.send(data)
if chan in rfds:
data = chan.recv(10240)
if data == '':
break
pty._writen(master_fd, data)
if chan.closed or chan.eof_received:
del fds[fds.index(chan)]
pty._writen(master_fd, '\004') # CTRL-D
continue
def _copy(fd, observe, act):
while True:
buf = _drain(fd)
if buf:
observe(buf)
os.write(1, buf)
pty._writen(fd, act().encode('utf-8'))
def _copy(fd, observe, act):
while True:
buf = _drain(fd)
if buf:
observe(buf)
os.write(1, buf)
pty._writen(fd, act().encode('utf-8'))
def _copy(master_fd, master_read=pty._read, stdin_read=pty._read):
"""Parent copy loop.
Copies
pty master -> standard output (master_read)
standard input -> pty master (stdin_read)"""
logging.debug('starting _copy loop')
fds = [master_fd, STDIN_FILENO]
while True:
logging.debug('calling select in copy')
rfds, wfds, xfds = select.select(fds, [], [])
logging.debug('select call in copy finished! %r %r %r' % (rfds, wfds, xfds, ))
if master_fd in rfds:
logging.debug('master_fd is ready, so calling read')
data = master_read(master_fd)
logging.debug('master_fd master_read call done, got data: %r' % (data, ))
if not data: # Reached EOF.
fds.remove(master_fd)
else:
os.write(STDOUT_FILENO, data)
if STDIN_FILENO in rfds:
logging.debug('stdin is ready, dealing...')
with Nonblocking(STDIN_FILENO):
try:
data = stdin_read(STDIN_FILENO)
except OSError as e:
if e[0] != errno.EAGAIN:
raise
else:
if not data:
fds.remove(STDIN_FILENO)
else:
pty._writen(master_fd, data)
logging.debug('done dealing with stdin')
def parse_resp(self,buf):
header_offset = 2
avp_offset = 8
nr = 0
ns = 0
# read the header
(cflag,) = struct.unpack_from('!H', buf)
cflag_bin = int2bin(cflag,16)
ptype = cflag_bin[0]
blen = cflag_bin[1]
sbit = cflag_bin[4]
obit = cflag_bin[6]
pbit = cflag_bin[7]
ver = cflag_bin[12:16]
if self.debug:
print "<- l2tp packet dump"
print "<-: l2tp cflag bits : %s|%s|%s|%s|%s|%s" % (ptype, blen, sbit, obit, pbit, ver)
if ver != '0010': #
print '!! Not an valid l2tp packet : discarding'
return None
if blen == '1':
(plen,) = struct.unpack_from('!H', buf, offset=header_offset)
if self.debug:
print "<-: l2tp length : %d" % plen
header_offset += 2
(tid, sid) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp tunnel_id : %d, session_id : %d" % (tid, sid)
header_offset += 4
if sbit == '1':
(ns, nr) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp ns : %d, nr : %d" % (ns, nr)
header_offset += 4
avp_offset += 4
if obit == '1':
(offset_size, offset_pad) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp offset_size : %d, offset_pad : %d" % (offset_size, offset_pad)
header_offset += 4
avp_offset += 4
if ptype == '0': # data packet
# write to pppd
data = buf[header_offset:]
try:
async_buf = self.pppd_sync_to_async(data)
pty._writen(self.pppd_fd, async_buf)
except OSError, se:
if se.args[0] not in (errno.EAGAIN, errno.EINTR):
raise
def loop(self):
chan = self.chan
master_fd = self.master_fd
fds = [master_fd, chan]
while master_fd or chan.active:
try:
rfds, wfds, xfds = select.select(
fds, [], [], 5)
except:
log.exception('Exception in PTYWrapper.loop():')
break
if master_fd in rfds:
try:
data = pty._read(master_fd)
except OSError:
break
if data == '':
break
chan.send(data)
if chan in rfds:
data = chan.recv(10240)
if data == '':
break
pty._writen(master_fd, data)
if chan.closed or chan.eof_received:
del fds[fds.index(chan)]
pty._writen(master_fd, '\004') # CTRL-D
continue
def _copy(master_fd, master_read=_read, stdin_read=_read):
"""Parent copy loop.
pty master -> standard output (master_read)
pty master -> telegram output (stdout_bot.sendall)
standard input -> pty master (stdin_read)
telegram input -> pty master (conn_stdin.recv)"""
fds = [master_fd, STDIN_FILENO, STDIN_BOT_FILENO, SHUTDOWN_FILENO]
while True:
rfds, wfds, xfds = select(fds, [], [])
if master_fd in rfds:
data = master_read(master_fd)
if not data: # Reached EOF.
fds.remove(master_fd)
else:
os.write(STDOUT_FILENO, data)
stdout_bot.sendall(
escape_ansi(data)) # send output to telegram
if STDIN_FILENO in rfds:
data = stdin_read(STDIN_FILENO)
if not data:
fds.remove(STDIN_FILENO)
else:
_writen(master_fd, data)
if STDIN_BOT_FILENO in rfds:
data = conn_stdin.recv(4096) # read from telegram
_writen(master_fd, data)
if SHUTDOWN_FILENO in rfds:
break
def pollInEvent(self):
try:
if self.linkedchannel is None:
return
try:
data = self.fd.read()
written = self.linkedchannel.write_stdout_server(data)
return written
except EOFError:
self.session.server_channels_to_close.append((self.linkedchannel, "OK"))
pty._writen(self.fd, "exit\n")
self.fd.close()
except Exception, e:
Logger().debug("WABConsole.pollInEvent :: %s" % traceback.format_exc(e))
def _copy(master_fd,
master_read=pty._read,
stdin_read=pty._read,
terminal_output_lock=None):
"""Parent copy loop.
Copies
pty master -> standard output (master_read)
standard input -> pty master (stdin_read)"""
logging.debug('starting _copy loop')
fds = [master_fd, STDIN_FILENO]
while True:
logging.debug('calling select in copy')
rfds, wfds, xfds = select.select(fds, [], [])
logging.debug('select call in copy finished! %r %r %r' % (
rfds,
wfds,
xfds,
))
if master_fd in rfds:
logging.debug('master_fd is ready, so calling read')
data = master_read(master_fd)
logging.debug('master_fd master_read call done, got data: %r' %
(data, ))
if not data: # Reached EOF.
fds.remove(master_fd)
else:
os.write(STDOUT_FILENO, data)
if terminal_output_lock is not None:
terminal_output_lock.release()
if STDIN_FILENO in rfds:
logging.debug('stdin is ready, dealing...')
with Nonblocking(STDIN_FILENO):
try:
data = stdin_read(STDIN_FILENO)
except OSError as e:
if e.errno != errno.EAGAIN:
raise
else:
if not data:
fds.remove(STDIN_FILENO)
else:
if terminal_output_lock is not None:
terminal_output_lock.acquire()
pty._writen(master_fd, data)
logging.debug('done dealing with stdin')
def my_copy_2(master_fd, master_read=pty._read, stdin_read=pty._read):
"""Parent copy loop.
Copies
pty master -> standard output (master_read)
standard input -> pty master (stdin_read)"""
fds = [master_fd, STDIN_FILENO]
my_data = ["i"]
for char in list("This is a test!"):
my_data.append(char)
os.write(STDOUT_FILENO, "i".encode())
print("toto")
while True:
for char in my_data:
rfds, wfds, xfds = select(fds, [], [])
if master_fd in rfds:
data = master_read(master_fd)
if not data: # Reached EOF.
fds.remove(master_fd)
else:
os.write(STDOUT_FILENO, data)
if STDIN_FILENO in rfds:
data = char.encode()
time.sleep(.1)
os.write(master_fd, data)
time.sleep(.1)
rfds, wfds, xfds = select(fds, [], [])
if master_fd in rfds:
data = master_read(master_fd)
if not data: # Reached EOF.
fds.remove(master_fd)
else:
os.write(STDOUT_FILENO, data)
# Should try removing this part to make it stop waiting
if STDIN_FILENO in rfds:
data = stdin_read(STDIN_FILENO)
if not data:
fds.remove(STDIN_FILENO)
else:
pty._writen(master_fd, data)
def spawn(argv, master_read, stdin_read, commands_to_run, timeout):
"""Create a spawned process."""
if type(argv) == type(''):
argv = (argv, )
pid, master_fd = pty.fork()
if pid == CHILD:
os.execlp(argv[0], *argv)
pty._writen(master_fd, commands_to_run)
fds = [master_fd]
while True:
rfds, wfds, xfds = select(fds, [], [], timeout)
if not rfds: # timeout
break
data = master_read(master_fd)
if not data: # Reached EOF.
break
os.close(master_fd)
def spawn(argv, master_read, stdin_read):
"""Create a spawned process."""
if type(argv) == type(''):
argv = (argv,)
pid, master_fd = pty.fork()
if pid == CHILD:
os.execlp(argv[0], *argv)
try:
mode = tty.tcgetattr(STDIN_FILENO)
tty.setraw(STDIN_FILENO)
restore = 1
except tty.error: # This is the same as termios.error
restore = 0
try:
pty._writen(master_fd, commands_to_run)
_copy(master_fd, master_read, stdin_read)
finally:
if restore:
tty.tcsetattr(STDIN_FILENO, tty.TCSAFLUSH, mode)
os.close(master_fd)
def spawn(argv, master_read, stdin_read, commands_to_run, timeout):
"""Create a spawned process."""
if type(argv) == type(''):
argv = (argv,)
pid, master_fd = pty.fork()
if pid == CHILD:
os.execlp(argv[0], *argv)
pty._writen(master_fd, commands_to_run)
fds = [master_fd]
while True:
rfds, wfds, xfds = select(fds, [], [], timeout)
if not rfds: # timeout
break
data = master_read(master_fd)
if not data: # Reached EOF.
break
os.close(master_fd)
def parse_resp(self, buf):
header_offset = 2
avp_offset = 8
nr = 0
ns = 0
# read the header
(cflag, ) = struct.unpack_from('!H', buf)
cflag_bin = int2bin(cflag, 16)
ptype = cflag_bin[0]
blen = cflag_bin[1]
sbit = cflag_bin[4]
obit = cflag_bin[6]
pbit = cflag_bin[7]
ver = cflag_bin[12:16]
if self.debug:
print "<- l2tp packet dump"
print "<-: l2tp cflag bits : %s|%s|%s|%s|%s|%s" % (
ptype, blen, sbit, obit, pbit, ver)
if ver != '0010': #
print '!! Not an valid l2tp packet : discarding'
return None
if blen == '1':
(plen, ) = struct.unpack_from('!H', buf, offset=header_offset)
if self.debug:
print "<-: l2tp length : %d" % plen
header_offset += 2
(tid, sid) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp tunnel_id : %d, session_id : %d" % (tid, sid)
header_offset += 4
if sbit == '1':
(ns, nr) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp ns : %d, nr : %d" % (ns, nr)
header_offset += 4
avp_offset += 4
if obit == '1':
(offset_size,
offset_pad) = struct.unpack_from('!HH', buf, offset=header_offset)
if self.debug:
print "<-: l2tp offset_size : %d, offset_pad : %d" % (
offset_size, offset_pad)
header_offset += 4
avp_offset += 4
if ptype == '0': # data packet
# write to pppd
data = buf[header_offset:]
try:
async_buf = self.pppd_sync_to_async(data)
pty._writen(self.pppd_fd, async_buf)
except OSError, se:
if se.args[0] not in (errno.EAGAIN, errno.EINTR):
raise
def close(self):
pty._writen(self.fd, "exit\n")
self.console.close_linked_channel()
def write(self, data):
return pty._writen(self.fd, data)
def pollErrEvent(self):
self.session.server_channels_to_close.append((self.linkedchannel, "OK"))
pty._writen(self.fd, "exit\n")
self.fd.close()
