Updated script that can be controled by Nodejs web app

lib/python3.13/site-packages/eventlet/greenio/__init__.py

@@ -0,0 +1,3 @@
+from eventlet.greenio.base import *  # noqa
+
+from eventlet.greenio.py3 import *  # noqa

lib/python3.13/site-packages/eventlet/greenio/base.py

@@ -0,0 +1,492 @@
+import errno
+import os
+import socket
+import sys
+import time
+import warnings
+
+import eventlet
+from eventlet.hubs import trampoline, notify_opened, IOClosed
+from eventlet.support import get_errno
+
+__all__ = [
+    'GreenSocket', '_GLOBAL_DEFAULT_TIMEOUT', 'set_nonblocking',
+    'SOCKET_BLOCKING', 'SOCKET_CLOSED', 'CONNECT_ERR', 'CONNECT_SUCCESS',
+    'shutdown_safe', 'SSL',
+    'socket_timeout',
+]
+
+BUFFER_SIZE = 4096
+CONNECT_ERR = {errno.EINPROGRESS, errno.EALREADY, errno.EWOULDBLOCK}
+CONNECT_SUCCESS = {0, errno.EISCONN}
+if sys.platform[:3] == "win":
+    CONNECT_ERR.add(errno.WSAEINVAL)   # Bug 67
+
+_original_socket = eventlet.patcher.original('socket').socket
+
+
+if sys.version_info >= (3, 10):
+    socket_timeout = socket.timeout  # Really, TimeoutError
+else:
+    socket_timeout = eventlet.timeout.wrap_is_timeout(socket.timeout)
+
+
+def socket_connect(descriptor, address):
+    """
+    Attempts to connect to the address, returns the descriptor if it succeeds,
+    returns None if it needs to trampoline, and raises any exceptions.
+    """
+    err = descriptor.connect_ex(address)
+    if err in CONNECT_ERR:
+        return None
+    if err not in CONNECT_SUCCESS:
+        raise OSError(err, errno.errorcode[err])
+    return descriptor
+
+
+def socket_checkerr(descriptor):
+    err = descriptor.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
+    if err not in CONNECT_SUCCESS:
+        raise OSError(err, errno.errorcode[err])
+
+
+def socket_accept(descriptor):
+    """
+    Attempts to accept() on the descriptor, returns a client,address tuple
+    if it succeeds; returns None if it needs to trampoline, and raises
+    any exceptions.
+    """
+    try:
+        return descriptor.accept()
+    except OSError as e:
+        if get_errno(e) == errno.EWOULDBLOCK:
+            return None
+        raise
+
+
+if sys.platform[:3] == "win":
+    # winsock sometimes throws ENOTCONN
+    SOCKET_BLOCKING = {errno.EAGAIN, errno.EWOULDBLOCK}
+    SOCKET_CLOSED = {errno.ECONNRESET, errno.ENOTCONN, errno.ESHUTDOWN}
+else:
+    # oddly, on linux/darwin, an unconnected socket is expected to block,
+    # so we treat ENOTCONN the same as EWOULDBLOCK
+    SOCKET_BLOCKING = {errno.EAGAIN, errno.EWOULDBLOCK, errno.ENOTCONN}
+    SOCKET_CLOSED = {errno.ECONNRESET, errno.ESHUTDOWN, errno.EPIPE}
+
+
+def set_nonblocking(fd):
+    """
+    Sets the descriptor to be nonblocking.  Works on many file-like
+    objects as well as sockets.  Only sockets can be nonblocking on
+    Windows, however.
+    """
+    try:
+        setblocking = fd.setblocking
+    except AttributeError:
+        # fd has no setblocking() method. It could be that this version of
+        # Python predates socket.setblocking(). In that case, we can still set
+        # the flag "by hand" on the underlying OS fileno using the fcntl
+        # module.
+        try:
+            import fcntl
+        except ImportError:
+            # Whoops, Windows has no fcntl module. This might not be a socket
+            # at all, but rather a file-like object with no setblocking()
+            # method. In particular, on Windows, pipes don't support
+            # non-blocking I/O and therefore don't have that method. Which
+            # means fcntl wouldn't help even if we could load it.
+            raise NotImplementedError("set_nonblocking() on a file object "
+                                      "with no setblocking() method "
+                                      "(Windows pipes don't support non-blocking I/O)")
+        # We managed to import fcntl.
+        fileno = fd.fileno()
+        orig_flags = fcntl.fcntl(fileno, fcntl.F_GETFL)
+        new_flags = orig_flags | os.O_NONBLOCK
+        if new_flags != orig_flags:
+            fcntl.fcntl(fileno, fcntl.F_SETFL, new_flags)
+    else:
+        # socket supports setblocking()
+        setblocking(0)
+
+
+try:
+    from socket import _GLOBAL_DEFAULT_TIMEOUT
+except ImportError:
+    _GLOBAL_DEFAULT_TIMEOUT = object()
+
+
+class GreenSocket:
+    """
+    Green version of socket.socket class, that is intended to be 100%
+    API-compatible.
+
+    It also recognizes the keyword parameter, 'set_nonblocking=True'.
+    Pass False to indicate that socket is already in non-blocking mode
+    to save syscalls.
+    """
+
+    # This placeholder is to prevent __getattr__ from creating an infinite call loop
+    fd = None
+
+    def __init__(self, family=socket.AF_INET, *args, **kwargs):
+        should_set_nonblocking = kwargs.pop('set_nonblocking', True)
+        if isinstance(family, int):
+            fd = _original_socket(family, *args, **kwargs)
+            # Notify the hub that this is a newly-opened socket.
+            notify_opened(fd.fileno())
+        else:
+            fd = family
+
+        # import timeout from other socket, if it was there
+        try:
+            self._timeout = fd.gettimeout() or socket.getdefaulttimeout()
+        except AttributeError:
+            self._timeout = socket.getdefaulttimeout()
+
+        # Filter fd.fileno() != -1 so that won't call set non-blocking on
+        # closed socket
+        if should_set_nonblocking and fd.fileno() != -1:
+            set_nonblocking(fd)
+        self.fd = fd
+        # when client calls setblocking(0) or settimeout(0) the socket must
+        # act non-blocking
+        self.act_non_blocking = False
+
+        # Copy some attributes from underlying real socket.
+        # This is the easiest way that i found to fix
+        # https://bitbucket.org/eventlet/eventlet/issue/136
+        # Only `getsockopt` is required to fix that issue, others
+        # are just premature optimization to save __getattr__ call.
+        self.bind = fd.bind
+        self.close = fd.close
+        self.fileno = fd.fileno
+        self.getsockname = fd.getsockname
+        self.getsockopt = fd.getsockopt
+        self.listen = fd.listen
+        self.setsockopt = fd.setsockopt
+        self.shutdown = fd.shutdown
+        self._closed = False
+
+    @property
+    def _sock(self):
+        return self
+
+    def _get_io_refs(self):
+        return self.fd._io_refs
+
+    def _set_io_refs(self, value):
+        self.fd._io_refs = value
+
+    _io_refs = property(_get_io_refs, _set_io_refs)
+
+    # Forward unknown attributes to fd, cache the value for future use.
+    # I do not see any simple attribute which could be changed
+    # so caching everything in self is fine.
+    # If we find such attributes - only attributes having __get__ might be cached.
+    # For now - I do not want to complicate it.
+    def __getattr__(self, name):
+        if self.fd is None:
+            raise AttributeError(name)
+        attr = getattr(self.fd, name)
+        setattr(self, name, attr)
+        return attr
+
+    def _trampoline(self, fd, read=False, write=False, timeout=None, timeout_exc=None):
+        """ We need to trampoline via the event hub.
+            We catch any signal back from the hub indicating that the operation we
+            were waiting on was associated with a filehandle that's since been
+            invalidated.
+        """
+        if self._closed:
+            # If we did any logging, alerting to a second trampoline attempt on a closed
+            # socket here would be useful.
+            raise IOClosed()
+        try:
+            return trampoline(fd, read=read, write=write, timeout=timeout,
+                              timeout_exc=timeout_exc,
+                              mark_as_closed=self._mark_as_closed)
+        except IOClosed:
+            # This socket's been obsoleted. De-fang it.
+            self._mark_as_closed()
+            raise
+
+    def accept(self):
+        if self.act_non_blocking:
+            res = self.fd.accept()
+            notify_opened(res[0].fileno())
+            return res
+        fd = self.fd
+        _timeout_exc = socket_timeout('timed out')
+        while True:
+            res = socket_accept(fd)
+            if res is not None:
+                client, addr = res
+                notify_opened(client.fileno())
+                set_nonblocking(client)
+                return type(self)(client), addr
+            self._trampoline(fd, read=True, timeout=self.gettimeout(), timeout_exc=_timeout_exc)
+
+    def _mark_as_closed(self):
+        """ Mark this socket as being closed """
+        self._closed = True
+
+    def __del__(self):
+        # This is in case self.close is not assigned yet (currently the constructor does it)
+        close = getattr(self, 'close', None)
+        if close is not None:
+            close()
+
+    def connect(self, address):
+        if self.act_non_blocking:
+            return self.fd.connect(address)
+        fd = self.fd
+        _timeout_exc = socket_timeout('timed out')
+        if self.gettimeout() is None:
+            while not socket_connect(fd, address):
+                try:
+                    self._trampoline(fd, write=True)
+                except IOClosed:
+                    raise OSError(errno.EBADFD)
+                socket_checkerr(fd)
+        else:
+            end = time.time() + self.gettimeout()
+            while True:
+                if socket_connect(fd, address):
+                    return
+                if time.time() >= end:
+                    raise _timeout_exc
+                timeout = end - time.time()
+                try:
+                    self._trampoline(fd, write=True, timeout=timeout, timeout_exc=_timeout_exc)
+                except IOClosed:
+                    # ... we need some workable errno here.
+                    raise OSError(errno.EBADFD)
+                socket_checkerr(fd)
+
+    def connect_ex(self, address):
+        if self.act_non_blocking:
+            return self.fd.connect_ex(address)
+        fd = self.fd
+        if self.gettimeout() is None:
+            while not socket_connect(fd, address):
+                try:
+                    self._trampoline(fd, write=True)
+                    socket_checkerr(fd)
+                except OSError as ex:
+                    return get_errno(ex)
+                except IOClosed:
+                    return errno.EBADFD
+                return 0
+        else:
+            end = time.time() + self.gettimeout()
+            timeout_exc = socket.timeout(errno.EAGAIN)
+            while True:
+                try:
+                    if socket_connect(fd, address):
+                        return 0
+                    if time.time() >= end:
+                        raise timeout_exc
+                    self._trampoline(fd, write=True, timeout=end - time.time(),
+                                     timeout_exc=timeout_exc)
+                    socket_checkerr(fd)
+                except OSError as ex:
+                    return get_errno(ex)
+                except IOClosed:
+                    return errno.EBADFD
+                return 0
+
+    def dup(self, *args, **kw):
+        sock = self.fd.dup(*args, **kw)
+        newsock = type(self)(sock, set_nonblocking=False)
+        newsock.settimeout(self.gettimeout())
+        return newsock
+
+    def makefile(self, *args, **kwargs):
+        return _original_socket.makefile(self, *args, **kwargs)
+
+    def makeGreenFile(self, *args, **kw):
+        warnings.warn("makeGreenFile has been deprecated, please use "
+                      "makefile instead", DeprecationWarning, stacklevel=2)
+        return self.makefile(*args, **kw)
+
+    def _read_trampoline(self):
+        self._trampoline(
+            self.fd,
+            read=True,
+            timeout=self.gettimeout(),
+            timeout_exc=socket_timeout('timed out'))
+
+    def _recv_loop(self, recv_meth, empty_val, *args):
+        if self.act_non_blocking:
+            return recv_meth(*args)
+
+        while True:
+            try:
+                # recv: bufsize=0?
+                # recv_into: buffer is empty?
+                # This is needed because behind the scenes we use sockets in
+                # nonblocking mode and builtin recv* methods. Attempting to read
+                # 0 bytes from a nonblocking socket using a builtin recv* method
+                # does not raise a timeout exception. Since we're simulating
+                # a blocking socket here we need to produce a timeout exception
+                # if needed, hence the call to trampoline.
+                if not args[0]:
+                    self._read_trampoline()
+                return recv_meth(*args)
+            except OSError as e:
+                if get_errno(e) in SOCKET_BLOCKING:
+                    pass
+                elif get_errno(e) in SOCKET_CLOSED:
+                    return empty_val
+                else:
+                    raise
+
+            try:
+                self._read_trampoline()
+            except IOClosed as e:
+                # Perhaps we should return '' instead?
+                raise EOFError()
+
+    def recv(self, bufsize, flags=0):
+        return self._recv_loop(self.fd.recv, b'', bufsize, flags)
+
+    def recvfrom(self, bufsize, flags=0):
+        return self._recv_loop(self.fd.recvfrom, b'', bufsize, flags)
+
+    def recv_into(self, buffer, nbytes=0, flags=0):
+        return self._recv_loop(self.fd.recv_into, 0, buffer, nbytes, flags)
+
+    def recvfrom_into(self, buffer, nbytes=0, flags=0):
+        return self._recv_loop(self.fd.recvfrom_into, 0, buffer, nbytes, flags)
+
+    def _send_loop(self, send_method, data, *args):
+        if self.act_non_blocking:
+            return send_method(data, *args)
+
+        _timeout_exc = socket_timeout('timed out')
+        while True:
+            try:
+                return send_method(data, *args)
+            except OSError as e:
+                eno = get_errno(e)
+                if eno == errno.ENOTCONN or eno not in SOCKET_BLOCKING:
+                    raise
+
+            try:
+                self._trampoline(self.fd, write=True, timeout=self.gettimeout(),
+                                 timeout_exc=_timeout_exc)
+            except IOClosed:
+                raise OSError(errno.ECONNRESET, 'Connection closed by another thread')
+
+    def send(self, data, flags=0):
+        return self._send_loop(self.fd.send, data, flags)
+
+    def sendto(self, data, *args):
+        return self._send_loop(self.fd.sendto, data, *args)
+
+    def sendall(self, data, flags=0):
+        tail = self.send(data, flags)
+        len_data = len(data)
+        while tail < len_data:
+            tail += self.send(data[tail:], flags)
+
+    def setblocking(self, flag):
+        if flag:
+            self.act_non_blocking = False
+            self._timeout = None
+        else:
+            self.act_non_blocking = True
+            self._timeout = 0.0
+
+    def settimeout(self, howlong):
+        if howlong is None or howlong == _GLOBAL_DEFAULT_TIMEOUT:
+            self.setblocking(True)
+            return
+        try:
+            f = howlong.__float__
+        except AttributeError:
+            raise TypeError('a float is required')
+        howlong = f()
+        if howlong < 0.0:
+            raise ValueError('Timeout value out of range')
+        if howlong == 0.0:
+            self.act_non_blocking = True
+            self._timeout = 0.0
+        else:
+            self.act_non_blocking = False
+            self._timeout = howlong
+
+    def gettimeout(self):
+        return self._timeout
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args):
+        self.close()
+
+    if "__pypy__" in sys.builtin_module_names:
+        def _reuse(self):
+            getattr(self.fd, '_sock', self.fd)._reuse()
+
+        def _drop(self):
+            getattr(self.fd, '_sock', self.fd)._drop()
+
+
+def _operation_on_closed_file(*args, **kwargs):
+    raise ValueError("I/O operation on closed file")
+
+
+greenpipe_doc = """
+    GreenPipe is a cooperative replacement for file class.
+    It will cooperate on pipes. It will block on regular file.
+    Differences from file class:
+    - mode is r/w property. Should re r/o
+    - encoding property not implemented
+    - write/writelines will not raise TypeError exception when non-string data is written
+      it will write str(data) instead
+    - Universal new lines are not supported and newlines property not implementeded
+    - file argument can be descriptor, file name or file object.
+    """
+
+# import SSL module here so we can refer to greenio.SSL.exceptionclass
+try:
+    from OpenSSL import SSL
+except ImportError:
+    # pyOpenSSL not installed, define exceptions anyway for convenience
+    class SSL:
+        class WantWriteError(Exception):
+            pass
+
+        class WantReadError(Exception):
+            pass
+
+        class ZeroReturnError(Exception):
+            pass
+
+        class SysCallError(Exception):
+            pass
+
+
+def shutdown_safe(sock):
+    """Shuts down the socket. This is a convenience method for
+    code that wants to gracefully handle regular sockets, SSL.Connection
+    sockets from PyOpenSSL and ssl.SSLSocket objects from Python 2.7 interchangeably.
+    Both types of ssl socket require a shutdown() before close,
+    but they have different arity on their shutdown method.
+
+    Regular sockets don't need a shutdown before close, but it doesn't hurt.
+    """
+    try:
+        try:
+            # socket, ssl.SSLSocket
+            return sock.shutdown(socket.SHUT_RDWR)
+        except TypeError:
+            # SSL.Connection
+            return sock.shutdown()
+    except OSError as e:
+        # we don't care if the socket is already closed;
+        # this will often be the case in an http server context
+        if get_errno(e) not in (errno.ENOTCONN, errno.EBADF, errno.ENOTSOCK):
+            raise

lib/python3.13/site-packages/eventlet/greenio/py3.py

@@ -0,0 +1,219 @@
+import _pyio as _original_pyio
+import errno
+import os as _original_os
+import socket as _original_socket
+from io import (
+    BufferedRandom as _OriginalBufferedRandom,
+    BufferedReader as _OriginalBufferedReader,
+    BufferedWriter as _OriginalBufferedWriter,
+    DEFAULT_BUFFER_SIZE,
+    TextIOWrapper as _OriginalTextIOWrapper,
+    IOBase as _OriginalIOBase,
+)
+from types import FunctionType
+
+from eventlet.greenio.base import (
+    _operation_on_closed_file,
+    greenpipe_doc,
+    set_nonblocking,
+    SOCKET_BLOCKING,
+)
+from eventlet.hubs import notify_close, notify_opened, IOClosed, trampoline
+from eventlet.support import get_errno
+
+__all__ = ['_fileobject', 'GreenPipe']
+
+# TODO get rid of this, it only seems like the original _fileobject
+_fileobject = _original_socket.SocketIO
+
+# Large part of the following code is copied from the original
+# eventlet.greenio module
+
+
+class GreenFileIO(_OriginalIOBase):
+    def __init__(self, name, mode='r', closefd=True, opener=None):
+        if isinstance(name, int):
+            fileno = name
+            self._name = "<fd:%d>" % fileno
+        else:
+            assert isinstance(name, str)
+            with open(name, mode) as fd:
+                self._name = fd.name
+                fileno = _original_os.dup(fd.fileno())
+
+        notify_opened(fileno)
+        self._fileno = fileno
+        self._mode = mode
+        self._closed = False
+        set_nonblocking(self)
+        self._seekable = None
+
+    @property
+    def closed(self):
+        return self._closed
+
+    def seekable(self):
+        if self._seekable is None:
+            try:
+                _original_os.lseek(self._fileno, 0, _original_os.SEEK_CUR)
+            except OSError as e:
+                if get_errno(e) == errno.ESPIPE:
+                    self._seekable = False
+                else:
+                    raise
+            else:
+                self._seekable = True
+
+        return self._seekable
+
+    def readable(self):
+        return 'r' in self._mode or '+' in self._mode
+
+    def writable(self):
+        return 'w' in self._mode or '+' in self._mode or 'a' in self._mode
+
+    def fileno(self):
+        return self._fileno
+
+    def read(self, size=-1):
+        if size == -1:
+            return self.readall()
+
+        while True:
+            try:
+                return _original_os.read(self._fileno, size)
+            except OSError as e:
+                if get_errno(e) not in SOCKET_BLOCKING:
+                    raise OSError(*e.args)
+                self._trampoline(self, read=True)
+
+    def readall(self):
+        buf = []
+        while True:
+            try:
+                chunk = _original_os.read(self._fileno, DEFAULT_BUFFER_SIZE)
+                if chunk == b'':
+                    return b''.join(buf)
+                buf.append(chunk)
+            except OSError as e:
+                if get_errno(e) not in SOCKET_BLOCKING:
+                    raise OSError(*e.args)
+                self._trampoline(self, read=True)
+
+    def readinto(self, b):
+        up_to = len(b)
+        data = self.read(up_to)
+        bytes_read = len(data)
+        b[:bytes_read] = data
+        return bytes_read
+
+    def isatty(self):
+        try:
+            return _original_os.isatty(self.fileno())
+        except OSError as e:
+            raise OSError(*e.args)
+
+    def _trampoline(self, fd, read=False, write=False, timeout=None, timeout_exc=None):
+        if self._closed:
+            # Don't trampoline if we're already closed.
+            raise IOClosed()
+        try:
+            return trampoline(fd, read=read, write=write, timeout=timeout,
+                              timeout_exc=timeout_exc,
+                              mark_as_closed=self._mark_as_closed)
+        except IOClosed:
+            # Our fileno has been obsoleted. Defang ourselves to
+            # prevent spurious closes.
+            self._mark_as_closed()
+            raise
+
+    def _mark_as_closed(self):
+        """ Mark this socket as being closed """
+        self._closed = True
+
+    def write(self, data):
+        view = memoryview(data)
+        datalen = len(data)
+        offset = 0
+        while offset < datalen:
+            try:
+                written = _original_os.write(self._fileno, view[offset:])
+            except OSError as e:
+                if get_errno(e) not in SOCKET_BLOCKING:
+                    raise OSError(*e.args)
+                trampoline(self, write=True)
+            else:
+                offset += written
+        return offset
+
+    def close(self):
+        if not self._closed:
+            self._closed = True
+            _original_os.close(self._fileno)
+        notify_close(self._fileno)
+        for method in [
+                'fileno', 'flush', 'isatty', 'next', 'read', 'readinto',
+                'readline', 'readlines', 'seek', 'tell', 'truncate',
+                'write', 'xreadlines', '__iter__', '__next__', 'writelines']:
+            setattr(self, method, _operation_on_closed_file)
+
+    def truncate(self, size=-1):
+        if size is None:
+            size = -1
+        if size == -1:
+            size = self.tell()
+        try:
+            rv = _original_os.ftruncate(self._fileno, size)
+        except OSError as e:
+            raise OSError(*e.args)
+        else:
+            self.seek(size)  # move position&clear buffer
+            return rv
+
+    def seek(self, offset, whence=_original_os.SEEK_SET):
+        try:
+            return _original_os.lseek(self._fileno, offset, whence)
+        except OSError as e:
+            raise OSError(*e.args)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args):
+        self.close()
+
+
+_open_environment = dict(globals())
+_open_environment.update(dict(
+    BufferedRandom=_OriginalBufferedRandom,
+    BufferedWriter=_OriginalBufferedWriter,
+    BufferedReader=_OriginalBufferedReader,
+    TextIOWrapper=_OriginalTextIOWrapper,
+    FileIO=GreenFileIO,
+    os=_original_os,
+))
+if hasattr(_original_pyio, 'text_encoding'):
+    _open_environment['text_encoding'] = _original_pyio.text_encoding
+
+_pyio_open = getattr(_original_pyio.open, '__wrapped__', _original_pyio.open)
+_open = FunctionType(
+    _pyio_open.__code__,
+    _open_environment,
+)
+
+
+def GreenPipe(name, mode="r", buffering=-1, encoding=None, errors=None,
+              newline=None, closefd=True, opener=None):
+    try:
+        fileno = name.fileno()
+    except AttributeError:
+        pass
+    else:
+        fileno = _original_os.dup(fileno)
+        name.close()
+        name = fileno
+
+    return _open(name, mode, buffering, encoding, errors, newline, closefd, opener)
+
+
+GreenPipe.__doc__ = greenpipe_doc