mirror of
https://github.com/clearml/wexpect-venv
synced 2025-06-26 18:15:52 +00:00
[ADD] SpawnPipe, and SpawnSocket classes
This commit is contained in:
Benedek Racz
parent
ba20b3f0d8
commit
46a206ae30
@ -22,8 +22,8 @@ import wexpect
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import unittest
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from . import PexpectTestCase
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class SplitCommandLineTestCase(PexpectTestCase.PexpectTestCase):
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def testSplitSizes(self):
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class TestCaseSplitCommandLine(PexpectTestCase.PexpectTestCase):
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def test_split_sizes(self):
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self.assertEqual(len(wexpect.split_command_line(r'')), 0)
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self.assertEqual(len(wexpect.split_command_line(r'one')), 1)
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self.assertEqual(len(wexpect.split_command_line(r'one two')), 2)
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@ -34,7 +34,7 @@ class SplitCommandLineTestCase(PexpectTestCase.PexpectTestCase):
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self.assertEqual(len(wexpect.split_command_line(r'one\"one')), 1)
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self.assertEqual(len(wexpect.split_command_line(r"This^' is a^'^ test")), 3)
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def testJoinArgs(self):
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def test_join_args(self):
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cmd = 'foo bar "b a z"'
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cmd2 = wexpect.join_args(wexpect.split_command_line(cmd))
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self.assertEqual(cmd2, cmd)
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@ -46,4 +46,4 @@ class SplitCommandLineTestCase(PexpectTestCase.PexpectTestCase):
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if __name__ == '__main__':
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unittest.main()
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suite = unittest.makeSuite(SplitCommandLineTestCase,'test')
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suite = unittest.makeSuite(TestCaseSplitCommandLine,'test')
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@ -9,9 +9,10 @@ from .wexpect_util import TIMEOUT
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from .console_reader import ConsoleReaderSocket
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from .console_reader import ConsoleReaderPipe
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from .spawn import Spawn
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from .spawn import Spawn as spawn
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from .spawn import SpawnSocket
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from .spawn import SpawnPipe
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from .spawn import SpawnSocket as spawn
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from .spawn import run
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__all__ = ['split_command_line', 'join_args', 'ExceptionPexpect', 'EOF', 'TIMEOUT',
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'ConsoleReaderSocket', 'ConsoleReaderPipe', 'spawn', 'Spawn', 'run']
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'ConsoleReaderSocket', 'ConsoleReaderPipe', 'spawn', 'SpawnSocket', 'SpawnPipe', 'run']
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@ -72,16 +72,24 @@ except: # pragma: no cover
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# console manipulation.
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#
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logger = logging.getLogger('wexpect')
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os.environ['WEXPECT_LOGGER_LEVEL'] = 'DEBUG'
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try:
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logger_level = os.environ['WEXPECT_LOGGER_LEVEL']
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logger.setLevel(logger_level)
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fh = logging.FileHandler('wexpect.log', 'w', 'utf-8')
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formatter = logging.Formatter('%(asctime)s - %(filename)s::%(funcName)s - %(levelname)s - %(message)s')
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fh.setFormatter(formatter)
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logger.addHandler(fh)
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except KeyError:
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logger.setLevel(logging.ERROR)
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def init_logger():
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logger = logging.getLogger('wexpect')
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os.environ['WEXPECT_LOGGER_LEVEL'] = 'DEBUG'
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try:
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logger_level = os.environ['WEXPECT_LOGGER_LEVEL']
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try:
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logger_filename = os.environ['WEXPECT_LOGGER_FILENAME']
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except KeyError:
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pid = os.getpid()
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logger_filename = f'wexpect_{pid}'
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logger.setLevel(logger_level)
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fh = logging.FileHandler(f'{logger_filename}.log', 'w', 'utf-8')
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formatter = logging.Formatter('%(asctime)s - %(filename)s::%(funcName)s - %(levelname)s - %(message)s')
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fh.setFormatter(formatter)
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logger.addHandler(fh)
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except KeyError:
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logger.setLevel(logging.ERROR)
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class ConsoleReaderBase:
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"""Consol class (aka. client-side python class) for the child.
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@ -109,7 +117,9 @@ class ConsoleReaderBase:
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self.consin = None
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self.consout = None
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self.local_echo = True
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self.pid = os.getpid()
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init_logger()
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logger.info("ConsoleReader started")
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if cp:
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@ -129,13 +139,8 @@ class ConsoleReaderBase:
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self.__childProcess, _, childPid, self.__tid = win32process.CreateProcess(None, path, None, None, False,
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0, None, None, si)
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print('123')
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print('456')
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print('789')
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except Exception as e:
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logger.info(e)
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time.sleep(.1)
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return
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time.sleep(.2)
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@ -162,10 +167,6 @@ class ConsoleReaderBase:
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"""
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if e.args[0] != winerror.ERROR_ACCESS_DENIED:
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logger.info(e)
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time.sleep(.1)
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self.send_to_host(self.readConsoleToCursor())
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time.sleep(.1)
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return
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if cursorPos.Y > maxconsoleY and not paused:
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@ -183,6 +184,9 @@ class ConsoleReaderBase:
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logger.error(traceback.format_exc())
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time.sleep(.1)
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finally:
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time.sleep(.1)
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self.send_to_host(self.readConsoleToCursor())
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time.sleep(1)
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self.close_connection()
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def write(self, s):
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@ -405,19 +409,22 @@ class ConsoleReaderSocket(ConsoleReaderBase):
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def create_connection(self, **kwargs):
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try:
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self.port = kwargs['port']
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# Create a TCP/IP socket
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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server_address = ('localhost', self.port)
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self.sock.bind(server_address)
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logger.info(f'Socket started at port: {self.port}')
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self.port = kwargs['port']
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# Create a TCP/IP socket
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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server_address = ('localhost', self.port)
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self.sock.bind(server_address)
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logger.info(f'Socket started at port: {self.port}')
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# Listen for incoming connections
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self.sock.listen(1)
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self.connection, client_address = self.sock.accept()
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self.connection.settimeout(.2)
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logger.info(f'Client connected: {client_address}')
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# Listen for incoming connections
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self.sock.listen(1)
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self.connection, client_address = self.sock.accept()
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self.connection.settimeout(.2)
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logger.info(f'Client connected: {client_address}')
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except:
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logger.error(f"Port: {self.port}")
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raise
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def close_connection(self):
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if self.connection:
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@ -449,9 +456,8 @@ class ConsoleReaderSocket(ConsoleReaderBase):
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class ConsoleReaderPipe(ConsoleReaderBase):
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def create_connection(self):
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pid = win32process.GetCurrentProcessId()
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pipe_name = 'wexpect_{}'.format(pid)
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def create_connection(self, **kwargs):
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pipe_name = 'wexpect_{}'.format(self.pid)
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pipe_full_path = r'\\.\pipe\{}'.format(pipe_name)
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logger.info('Start pipe server: %s', pipe_full_path)
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self.pipe = win32pipe.CreateNamedPipe(
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320
wexpect/spawn.py
320
wexpect/spawn.py
@ -150,9 +150,9 @@ def run (command, timeout=-1, withexitstatus=False, events=None, extra_args=None
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dictionary passed to a callback. """
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if timeout == -1:
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child = Spawn(command, maxread=2000, logfile=logfile, cwd=cwd, env=env)
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child = SpawnSocket(command, maxread=2000, logfile=logfile, cwd=cwd, env=env)
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else:
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child = Spawn(command, timeout=timeout, maxread=2000, logfile=logfile, cwd=cwd, env=env)
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child = SpawnSocket(command, timeout=timeout, maxread=2000, logfile=logfile, cwd=cwd, env=env)
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if events is not None:
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patterns = list(events.keys())
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responses = list(events.values())
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@ -194,7 +194,7 @@ def run (command, timeout=-1, withexitstatus=False, events=None, extra_args=None
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return child_result
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class Spawn:
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class SpawnBase:
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def __init__(self, command, args=[], timeout=30, maxread=60000, searchwindowsize=None,
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logfile=None, cwd=None, env=None, codepage=None, echo=True):
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"""This starts the given command in a child process. This does all the
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@ -271,7 +271,7 @@ class Spawn:
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self.closed = False
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self.child_fd = self.startChild(self.args, self.env)
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self.connect_to_child('localhost', 4321)
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self.connect_to_child()
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def __del__(self):
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"""This makes sure that no system resources are left open. Python only
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@ -391,36 +391,9 @@ class Spawn:
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return self
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def read_nonblocking (self, size = 1):
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"""This reads at most size characters from the child application. If
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the end of file is read then an EOF exception will be raised.
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This is not effected by the 'size' parameter, so if you call
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read_nonblocking(size=100, timeout=30) and only one character is
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available right away then one character will be returned immediately.
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It will not wait for 30 seconds for another 99 characters to come in.
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This is a wrapper around Wtty.read(). """
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if self.closed:
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raise ValueError ('I/O operation on closed file in read_nonblocking().')
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try:
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# The real child and it's console are two different process. The console dies 0.1 sec
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# later to be able to read the child's last output (before EOF). So here we check
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# isalive() (which checks the real child.) and try a last read on the console. To catch
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# the last output.
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# The flag_child_finished flag shows that this is the second trial, where we raise the EOF.
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if self.flag_child_finished:
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raise EOF('self.flag_child_finished')
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if not self.isalive():
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self.flag_child_finished = True
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s = self.sock.recv(size)
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except EOF:
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self.flag_eof = True
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raise
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return s.decode()
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"""Virtual definition
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"""
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raise NotImplementedError
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def __next__ (self): # File-like object.
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@ -456,100 +429,11 @@ class Spawn:
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return True
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def kill(self, sig):
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"""Sig == sigint for ctrl-c otherwise the child is terminated."""
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os.kill(self.conpid, sig)
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def pipe_client(self, conpid):
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pipe_name = 'wexpect_{}'.format(conpid)
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pipe_full_path = r'\\.\pipe\{}'.format(pipe_name)
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print('Trying to connect to pipe: {}'.format(pipe_full_path))
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quit = False
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while not quit:
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try:
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handle = win32file.CreateFile(
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pipe_full_path,
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win32file.GENERIC_READ | win32file.GENERIC_WRITE,
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0,
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None,
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win32file.OPEN_EXISTING,
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0,
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None
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)
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print("pipe found!")
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res = win32pipe.SetNamedPipeHandleState(handle, win32pipe.PIPE_READMODE_MESSAGE, None, None)
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if res == 0:
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print(f"SetNamedPipeHandleState return code: {res}")
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while True:
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resp = win32file.ReadFile(handle, 64*1024)
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print(f"message: {resp}")
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win32file.WriteFile(handle, b'back')
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except pywintypes.error as e:
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if e.args[0] == winerror.ERROR_FILE_NOT_FOUND: #2
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print("no pipe, trying again in a bit later")
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time.sleep(0.2)
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elif e.args[0] == winerror.ERROR_BROKEN_PIPE: #109
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print("broken pipe, bye bye")
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quit = True
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elif e.args[0] == winerror.ERROR_NO_DATA:
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'''232 (0xE8)
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The pipe is being closed.
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'''
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print("The pipe is being closed.")
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quit = True
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else:
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raise
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def connect_to_child(self, host, port):
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.connect((host, port))
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def disconnect_from_child(self):
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if self.sock:
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self.sock.close()
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def startChild(self, args, env):
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si = win32process.GetStartupInfo()
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si.dwFlags = win32process.STARTF_USESHOWWINDOW
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si.wShowWindow = win32con.SW_HIDE
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dirname = os.path.dirname(sys.executable
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if getattr(sys, 'frozen', False) else
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os.path.abspath(__file__))
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spath = [os.path.dirname(dirname)]
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pyargs = ['-c']
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if getattr(sys, 'frozen', False):
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# If we are running 'frozen', add library.zip and lib\library.zip
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# to sys.path
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# py2exe: Needs appropriate 'zipfile' option in setup script and
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# 'bundle_files' 3
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spath.append(os.path.join(dirname, 'library.zip'))
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spath.append(os.path.join(dirname, 'library.zip',
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os.path.basename(os.path.splitext(sys.executable)[0])))
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if os.path.isdir(os.path.join(dirname, 'lib')):
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dirname = os.path.join(dirname, 'lib')
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spath.append(os.path.join(dirname, 'library.zip'))
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spath.append(os.path.join(dirname, 'library.zip',
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os.path.basename(os.path.splitext(sys.executable)[0])))
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pyargs.insert(0, '-S') # skip 'import site'
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pid = win32process.GetCurrentProcessId()
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commandLine = '"%s" %s "%s"' % (os.path.join(dirname, 'python.exe')
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if getattr(sys, 'frozen', False) else
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os.path.join(os.path.dirname(sys.executable), 'python.exe'),
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' '.join(pyargs),
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"import sys;"
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f"sys.path = {spath} + sys.path;"
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"import wexpect;"
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"import time;"
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f"wexpect.ConsoleReaderSocket(wexpect.join_args({args}), {pid}, port=4321);"
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)
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self.conproc, _, conpid, __otid = win32process.CreateProcess(None, commandLine, None, None, False,
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win32process.CREATE_NEW_CONSOLE, None, None, si)
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# win32api.TerminateProcess(self.conproc, 1)
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def isalive(self, console=True):
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"""True if the child is still alive, false otherwise"""
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@ -601,15 +485,20 @@ class Spawn:
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char = chr(4)
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self.send(char)
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def send(self, s):
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"""This sends a string to the child process. This returns the number of
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bytes written. If a log file was set then the data is also written to
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the log. """
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def send(self):
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"""Virtual definition
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"""
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raise NotImplementedError
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time.sleep(self.delaybeforesend)
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self.sock.sendall(s)
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return len(s)
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def connect_to_child(self):
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"""Virtual definition
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"""
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raise NotImplementedError
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def disconnect_from_child(self):
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"""Virtual definition
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"""
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raise NotImplementedError
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def compile_pattern_list(self, patterns):
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@ -846,6 +735,167 @@ class Spawn:
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self.match_index = None
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raise
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class SpawnPipe(SpawnBase):
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def pipe_client(self, conpid):
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pipe_name = 'wexpect_{}'.format(conpid)
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pipe_full_path = r'\\.\pipe\{}'.format(pipe_name)
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print('Trying to connect to pipe: {}'.format(pipe_full_path))
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quit = False
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while not quit:
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try:
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handle = win32file.CreateFile(
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pipe_full_path,
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win32file.GENERIC_READ | win32file.GENERIC_WRITE,
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0,
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None,
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win32file.OPEN_EXISTING,
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0,
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None
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)
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print("pipe found!")
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res = win32pipe.SetNamedPipeHandleState(handle, win32pipe.PIPE_READMODE_MESSAGE, None, None)
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if res == 0:
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print(f"SetNamedPipeHandleState return code: {res}")
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while True:
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resp = win32file.ReadFile(handle, 64*1024)
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print(f"message: {resp}")
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win32file.WriteFile(handle, b'back')
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except pywintypes.error as e:
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if e.args[0] == winerror.ERROR_FILE_NOT_FOUND: #2
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print("no pipe, trying again in a bit later")
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time.sleep(0.2)
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elif e.args[0] == winerror.ERROR_BROKEN_PIPE: #109
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print("broken pipe, bye bye")
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quit = True
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elif e.args[0] == winerror.ERROR_NO_DATA:
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'''232 (0xE8)
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The pipe is being closed.
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'''
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print("The pipe is being closed.")
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quit = True
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else:
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raise
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def send(self, s):
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"""This sends a string to the child process. This returns the number of
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bytes written. If a log file was set then the data is also written to
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the log. """
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if isinstance(s, str):
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s = str.encode(s)
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if self.delaybeforesend:
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time.sleep(self.delaybeforesend)
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self.sock.sendall(s)
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return len(s)
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class SpawnSocket(SpawnBase):
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def __init__(self, command, args=[], timeout=30, maxread=60000, searchwindowsize=None,
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logfile=None, cwd=None, env=None, codepage=None, echo=True, port=4321, host='localhost'):
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self.port = port
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self.host = host
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super().__init__(command=command, args=args, timeout=timeout, maxread=maxread,
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searchwindowsize=searchwindowsize, cwd=cwd, env=env, codepage=codepage, echo=echo)
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def send(self, s):
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"""This sends a string to the child process. This returns the number of
|
||||
bytes written. If a log file was set then the data is also written to
|
||||
the log. """
|
||||
if isinstance(s, str):
|
||||
s = str.encode(s)
|
||||
if self.delaybeforesend:
|
||||
time.sleep(self.delaybeforesend)
|
||||
self.sock.sendall(s)
|
||||
return len(s)
|
||||
|
||||
def connect_to_child(self):
|
||||
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||||
self.sock.connect((self.host, self.port))
|
||||
|
||||
def disconnect_from_child(self):
|
||||
if self.sock:
|
||||
self.sock.close()
|
||||
|
||||
def read_nonblocking (self, size = 1):
|
||||
"""This reads at most size characters from the child application. If
|
||||
the end of file is read then an EOF exception will be raised.
|
||||
|
||||
This is not effected by the 'size' parameter, so if you call
|
||||
read_nonblocking(size=100, timeout=30) and only one character is
|
||||
available right away then one character will be returned immediately.
|
||||
It will not wait for 30 seconds for another 99 characters to come in.
|
||||
|
||||
This is a wrapper around Wtty.read(). """
|
||||
|
||||
if self.closed:
|
||||
raise ValueError ('I/O operation on closed file in read_nonblocking().')
|
||||
|
||||
try:
|
||||
# The real child and it's console are two different process. The console dies 0.1 sec
|
||||
# later to be able to read the child's last output (before EOF). So here we check
|
||||
# isalive() (which checks the real child.) and try a last read on the console. To catch
|
||||
# the last output.
|
||||
# The flag_child_finished flag shows that this is the second trial, where we raise the EOF.
|
||||
if self.flag_child_finished:
|
||||
raise EOF('self.flag_child_finished')
|
||||
if not self.isalive():
|
||||
self.flag_child_finished = True
|
||||
|
||||
s = self.sock.recv(size)
|
||||
except EOF:
|
||||
self.flag_eof = True
|
||||
raise
|
||||
|
||||
return s.decode()
|
||||
|
||||
def startChild(self, args, env):
|
||||
si = win32process.GetStartupInfo()
|
||||
si.dwFlags = win32process.STARTF_USESHOWWINDOW
|
||||
si.wShowWindow = win32con.SW_HIDE
|
||||
|
||||
dirname = os.path.dirname(sys.executable
|
||||
if getattr(sys, 'frozen', False) else
|
||||
os.path.abspath(__file__))
|
||||
spath = [os.path.dirname(dirname)]
|
||||
pyargs = ['-c']
|
||||
if getattr(sys, 'frozen', False):
|
||||
# If we are running 'frozen', add library.zip and lib\library.zip
|
||||
# to sys.path
|
||||
# py2exe: Needs appropriate 'zipfile' option in setup script and
|
||||
# 'bundle_files' 3
|
||||
spath.append(os.path.join(dirname, 'library.zip'))
|
||||
spath.append(os.path.join(dirname, 'library.zip',
|
||||
os.path.basename(os.path.splitext(sys.executable)[0])))
|
||||
if os.path.isdir(os.path.join(dirname, 'lib')):
|
||||
dirname = os.path.join(dirname, 'lib')
|
||||
spath.append(os.path.join(dirname, 'library.zip'))
|
||||
spath.append(os.path.join(dirname, 'library.zip',
|
||||
os.path.basename(os.path.splitext(sys.executable)[0])))
|
||||
pyargs.insert(0, '-S') # skip 'import site'
|
||||
|
||||
|
||||
pid = win32process.GetCurrentProcessId()
|
||||
|
||||
commandLine = '"%s" %s "%s"' % (os.path.join(dirname, 'python.exe')
|
||||
if getattr(sys, 'frozen', False) else
|
||||
os.path.join(os.path.dirname(sys.executable), 'python.exe'),
|
||||
' '.join(pyargs),
|
||||
"import sys;"
|
||||
f"sys.path = {spath} + sys.path;"
|
||||
"import wexpect;"
|
||||
"import time;"
|
||||
f"wexpect.ConsoleReaderSocket(wexpect.join_args({args}), {pid}, port={self.port});"
|
||||
)
|
||||
|
||||
self.conproc, _, self.conpid, __otid = win32process.CreateProcess(None, commandLine, None, None, False,
|
||||
win32process.CREATE_NEW_CONSOLE, None, None, si)
|
||||
|
||||
|
||||
|
||||
class searcher_re (object):
|
||||
|
||||
@ -938,7 +988,7 @@ class searcher_re (object):
|
||||
|
||||
def main():
|
||||
try:
|
||||
p = Spawn('cmd')
|
||||
p = SpawnSocket('cmd')
|
||||
|
||||
p.sendline(b'ls')
|
||||
time.sleep(.5)
|
||||
|
||||
@ -38,21 +38,62 @@ Wexpect Copyright (c) 2019 Benedek Racz
|
||||
"""
|
||||
|
||||
import re
|
||||
import ctypes
|
||||
import traceback
|
||||
import sys
|
||||
|
||||
def split_command_line(command_line):
|
||||
'''https://stackoverflow.com/a/35900070/2506522
|
||||
'''
|
||||
def split_command_line(command_line, escape_char = '^'):
|
||||
"""This splits a command line into a list of arguments. It splits arguments
|
||||
on spaces, but handles embedded quotes, doublequotes, and escaped
|
||||
characters. It's impossible to do this with a regular expression, so I
|
||||
wrote a little state machine to parse the command line. """
|
||||
|
||||
nargs = ctypes.c_int()
|
||||
ctypes.windll.shell32.CommandLineToArgvW.restype = ctypes.POINTER(ctypes.c_wchar_p)
|
||||
lpargs = ctypes.windll.shell32.CommandLineToArgvW(command_line, ctypes.byref(nargs))
|
||||
args = [lpargs[i] for i in range(nargs.value)]
|
||||
if ctypes.windll.kernel32.LocalFree(lpargs):
|
||||
raise AssertionError
|
||||
return args
|
||||
arg_list = []
|
||||
arg = ''
|
||||
|
||||
# Constants to name the states we can be in.
|
||||
state_basic = 0
|
||||
state_esc = 1
|
||||
state_singlequote = 2
|
||||
state_doublequote = 3
|
||||
state_whitespace = 4 # The state of consuming whitespace between commands.
|
||||
state = state_basic
|
||||
|
||||
for c in command_line:
|
||||
if state == state_basic or state == state_whitespace:
|
||||
if c == escape_char: # Escape the next character
|
||||
state = state_esc
|
||||
elif c == r"'": # Handle single quote
|
||||
state = state_singlequote
|
||||
elif c == r'"': # Handle double quote
|
||||
state = state_doublequote
|
||||
elif c.isspace():
|
||||
# Add arg to arg_list if we aren't in the middle of whitespace.
|
||||
if state == state_whitespace:
|
||||
None # Do nothing.
|
||||
else:
|
||||
arg_list.append(arg)
|
||||
arg = ''
|
||||
state = state_whitespace
|
||||
else:
|
||||
arg = arg + c
|
||||
state = state_basic
|
||||
elif state == state_esc:
|
||||
arg = arg + c
|
||||
state = state_basic
|
||||
elif state == state_singlequote:
|
||||
if c == r"'":
|
||||
state = state_basic
|
||||
else:
|
||||
arg = arg + c
|
||||
elif state == state_doublequote:
|
||||
if c == r'"':
|
||||
state = state_basic
|
||||
else:
|
||||
arg = arg + c
|
||||
|
||||
if arg != '':
|
||||
arg_list.append(arg)
|
||||
return arg_list
|
||||
|
||||
def join_args(args):
|
||||
"""Joins arguments into a command line. It quotes all arguments that contain
|
||||
|
||||
Loading…
Reference in New Issue
Block a user