socket_wrapper: Added python interface to socket_wrapper

The socket_wrapper does not support setting blocking flag or
timeouts on the sockets.

To use socket module in python, use

from samba import socket

Signed-off-by: Kai Blin <kai@samba.org>

3 files changed, 938 insertions, 0 deletions

diff --git a/lib/socket_wrapper/py_socket_wrapper.c b/lib/socket_wrapper/py_socket_wrapper.c
new file mode 100644
index 0000000000..405a43a81d
--- /dev/null
+++ b/lib/socket_wrapper/py_socket_wrapper.c
@@ -0,0 +1,876 @@
+/*
+ * Copyright (C) Amitay Isaacs 2011
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the author nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+   Python interface to socket wrapper library.
+
+   Passes all socket communication over unix domain sockets if the environment
+   variable SOCKET_WRAPPER_DIR is set.
+*/
+
+#include <Python.h>
+#include <pytalloc.h>
+#include "replace/replace.h"
+#include "system/network.h"
+#include "socket_wrapper.h"
+
+#ifndef Py_RETURN_NONE
+#define Py_RETURN_NONE	return Py_INCREF(Py_None), Py_None
+#endif
+
+#ifndef Py_TYPE /* Py_TYPE is only available on Python > 2.6 */
+#define Py_TYPE(ob)		(((PyObject*)(ob))->ob_type)
+#endif
+
+#ifndef PY_CHECK_TYPE
+#define PY_CHECK_TYPE(type, var, fail) \
+	if (!PyObject_TypeCheck(var, type)) {\
+		PyErr_Format(PyExc_TypeError, __location__ ": Expected type '%s' for '%s' of type '%s'", (type)->tp_name, #var, Py_TYPE(var)->tp_name); \
+		fail; \
+	}
+#endif
+
+staticforward PyTypeObject PySocket;
+
+static PyObject *py_socket_error;
+
+void initsocket_wrapper(void);
+
+static PyObject *py_socket_addr_to_tuple(struct sockaddr *addr, socklen_t len)
+{
+	char host[256];
+	char service[8];
+	int status;
+	PyObject *pyaddr;
+
+	status = getnameinfo(addr, len, host, 255, service, 7, NI_NUMERICHOST|NI_NUMERICSERV);
+	if (status < 0) {
+		PyErr_SetString(py_socket_error, gai_strerror(status));
+		return NULL;
+	}
+
+	pyaddr = PyTuple_New(2);
+	if (pyaddr == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	PyTuple_SetItem(pyaddr, 0, PyString_FromString(host));
+	PyTuple_SetItem(pyaddr, 1, PyInt_FromLong(atoi(service)));
+
+	return pyaddr;
+}
+
+static bool py_socket_tuple_to_addr(PyObject *pyaddr, struct sockaddr *addr, socklen_t *len)
+{
+	const char *host;
+	char *service;
+	in_port_t port;
+	struct addrinfo *ainfo;
+	int status;
+
+	if (!PyTuple_Check(pyaddr)) {
+		PyErr_SetString(PyExc_TypeError, "Expected a tuple");
+		return false;
+	}
+
+	if (!PyArg_ParseTuple(pyaddr, "sH", &host, &port)) {
+		return false;
+	}
+
+	service = talloc_asprintf(NULL, "%d", port);
+	if (service == NULL) {
+		PyErr_NoMemory();
+		return false;
+	}
+
+	status = getaddrinfo(host, service, NULL, &ainfo);
+	if (status < 0) {
+		talloc_free(service);
+		PyErr_SetString(py_socket_error, gai_strerror(status));
+		return false;
+	}
+
+	talloc_free(service);
+
+	memcpy(addr, ainfo->ai_addr, sizeof(struct sockaddr));
+	*len = ainfo->ai_addrlen;
+
+	freeaddrinfo(ainfo);
+	return true;
+}
+
+
+static PyObject *py_socket_accept(pytalloc_Object *self, PyObject *args)
+{
+	int *sock, *new_sock;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	PyObject *pysocket;
+	PyObject *pyaddr;
+	PyObject *pyret;
+
+	sock = pytalloc_get_ptr(self);
+
+	new_sock = talloc_zero(NULL, int);
+	if (new_sock == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	*new_sock = swrap_accept(*sock, &addr, &addrlen);
+	if (*new_sock < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	if ((pysocket = pytalloc_steal(&PySocket, new_sock)) == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	pyret = PyTuple_New(2);
+	if (pyret == NULL) {
+		Py_DECREF(pysocket);
+		return PyErr_NoMemory();
+	}
+
+	pyaddr = py_socket_addr_to_tuple(&addr, addrlen);
+	if (pyaddr == NULL) {
+		Py_DECREF(pysocket);
+		Py_DECREF(pysocket);
+		return NULL;
+	}
+
+	PyTuple_SetItem(pyret, 0, pysocket);
+	PyTuple_SetItem(pyret, 1, pyaddr);
+	return pyret;
+}
+
+static PyObject *py_socket_bind(pytalloc_Object *self, PyObject *args)
+{
+	PyObject *pyaddr;
+	int *sock;
+	int status;
+	struct sockaddr addr;
+	socklen_t addrlen;
+
+	if (!PyArg_ParseTuple(args, "O:bind", &pyaddr)) {
+		return NULL;
+	}
+
+	if (!py_socket_tuple_to_addr(pyaddr, &addr, &addrlen)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_bind(*sock, &addr, addrlen);
+	if (status < 0) {
+		PyErr_SetString(py_socket_error, "Unable to bind");
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_close(pytalloc_Object *self, PyObject *args)
+{
+	int *sock;
+	int status;
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_close(*sock);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_connect(pytalloc_Object *self, PyObject *args)
+{
+	int *sock;
+	PyObject *pyaddr;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "O:connect", &pyaddr)) {
+		return NULL;
+	}
+
+	if (!py_socket_tuple_to_addr(pyaddr, &addr, &addrlen)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_connect(*sock, &addr, addrlen);
+	if (status < 0) {
+		PyErr_SetFromErrno(py_socket_error);
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_connect_ex(pytalloc_Object *self, PyObject *args)
+{
+	int *sock;
+	PyObject *pyaddr;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "O:connect", &pyaddr)) {
+		return NULL;
+	}
+
+	if (!py_socket_tuple_to_addr(pyaddr, &addr, &addrlen)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_connect(*sock, &addr, addrlen);
+	if (status < 0) {
+		return Py_BuildValue("%d", errno);
+	}
+
+	return Py_BuildValue("%d", 0);
+}
+
+static PyObject *py_socket_dup(pytalloc_Object *self, PyObject *args)
+{
+	int *sock, *new_sock;
+	PyObject *pysocket;
+
+	sock = pytalloc_get_ptr(self);
+
+	new_sock = talloc_zero(NULL, int);
+	if (new_sock == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	*new_sock = swrap_dup(*sock);
+	if (*new_sock < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pysocket = pytalloc_steal(&PySocket, new_sock);
+	if (pysocket == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	return pysocket;
+}
+
+static PyObject *py_socket_dup2(pytalloc_Object *self, PyObject *args)
+{
+	int *sock, *new_sock;
+	PyObject *pysocket;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "O", &pysocket)) {
+		return NULL;
+	}
+
+	PY_CHECK_TYPE(&PySocket, pysocket, return NULL);
+
+	sock = pytalloc_get_ptr(self);
+	new_sock = pytalloc_get_ptr(pysocket);
+
+	status = swrap_dup2(*sock, *new_sock);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_fileno(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_getpeername(pytalloc_Object *self, PyObject *args)
+{
+	int *sock;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	int status;
+	PyObject *pyaddr;
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_getpeername(*sock, &addr, &addrlen);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pyaddr = py_socket_addr_to_tuple(&addr, addrlen);
+
+	return pyaddr;
+}
+
+static PyObject *py_socket_getsockname(pytalloc_Object *self, PyObject *args)
+{
+	int *sock;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	int status;
+	PyObject *pyaddr;
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_getsockname(*sock, &addr, &addrlen);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pyaddr = py_socket_addr_to_tuple(&addr, addrlen);
+
+	return pyaddr;
+}
+
+static PyObject *py_socket_getsockopt(pytalloc_Object *self, PyObject *args)
+{
+	int level, optname;
+	int *sock;
+	socklen_t optlen = -1, newlen;
+	int optval;
+	bool is_integer = false;
+	char *buffer;
+	PyObject *pyret;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "ii|i:getsockopt", &level, &optname, &optlen)) {
+		return NULL;
+	}
+
+	if (optlen < 0) {
+		optlen = sizeof(int);
+		is_integer = true;
+	}
+
+	buffer = talloc_zero_array(NULL, char, optlen);
+	if (buffer == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_getsockopt(*sock, level, optname, (void *)buffer, &newlen);
+	if (status < 0) {
+		talloc_free(buffer);
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	if (is_integer) {
+		optval = *(int *)buffer;
+		pyret = PyInt_FromLong(optval);
+	} else {
+		pyret = PyString_FromStringAndSize(buffer, optlen);
+	}
+
+	talloc_free(buffer);
+
+	return pyret;
+}
+
+static PyObject *py_socket_gettimeout(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_listen(pytalloc_Object *self, PyObject *args)
+{
+	int backlog;
+	int *sock;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "i:listen", &backlog)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_listen(*sock, backlog);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_makefile(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_read(pytalloc_Object *self, PyObject *args)
+{
+	int bufsize, len;
+	int *sock;
+	char *buffer;
+	PyObject *pyret;
+
+	if (!PyArg_ParseTuple(args, "i:read", &bufsize)) {
+		return NULL;
+	}
+
+	buffer = talloc_zero_array(NULL, char, bufsize);
+	if (buffer == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	len = swrap_read(*sock, buffer, bufsize);
+	if (len < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pyret = PyString_FromStringAndSize(buffer, len);
+
+	talloc_free(buffer);
+
+	return pyret;
+}
+
+static PyObject *py_socket_recv(pytalloc_Object *self, PyObject *args)
+{
+	int bufsize, flags, len;
+	int *sock;
+	char *buffer;
+	PyObject *pyret;
+
+	if (!PyArg_ParseTuple(args, "ii:recv", &bufsize, &flags)) {
+		return NULL;
+	}
+
+	buffer = talloc_zero_array(NULL, char, bufsize);
+	if (buffer == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	len = swrap_recv(*sock, buffer, bufsize, flags);
+	if (len < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pyret = PyString_FromStringAndSize(buffer, len);
+
+	talloc_free(buffer);
+
+	return pyret;
+}
+
+static PyObject *py_socket_recvfrom(pytalloc_Object *self, PyObject *args)
+{
+	int bufsize, flags, len;
+	int *sock;
+	char *buffer;
+	struct sockaddr from;
+	socklen_t fromlen;
+	PyObject *pybuf, *pyaddr, *pyret;
+
+	if (!PyArg_ParseTuple(args, "ii:recvfrom", &bufsize, &flags)) {
+		return NULL;
+	}
+
+	buffer = talloc_zero_array(NULL, char, bufsize);
+	if (buffer == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	fromlen = sizeof(struct sockaddr);
+
+	len = swrap_recvfrom(*sock, buffer, bufsize, flags, &from, &fromlen);
+	if (len < 0) {
+		talloc_free(buffer);
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	pybuf = PyString_FromStringAndSize(buffer, len);
+	if (pybuf == NULL) {
+		talloc_free(buffer);
+		return PyErr_NoMemory();
+	}
+
+	talloc_free(buffer);
+
+	pyaddr = py_socket_addr_to_tuple(&from, fromlen);
+	if (pyaddr == NULL) {
+		Py_DECREF(pybuf);
+		return NULL;
+	}
+
+	pyret = PyTuple_New(2);
+	if (pyret == NULL) {
+		Py_DECREF(pybuf);
+		Py_DECREF(pyaddr);
+		return PyErr_NoMemory();
+	}
+
+	PyTuple_SetItem(pyret, 0, pybuf);
+	PyTuple_SetItem(pyret, 1, pyaddr);
+
+	return pyret;
+}
+
+static PyObject *py_socket_send(pytalloc_Object *self, PyObject *args)
+{
+	char *buffer;
+	int len, flags;
+	int *sock;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "s#i:sendto", &buffer, &len, &flags)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_send(*sock, buffer, len, flags);
+	if (status < 0) {
+		PyErr_SetFromErrno(py_socket_error);
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_sendall(pytalloc_Object *self, PyObject *args)
+{
+	char *buffer;
+	int len, flags;
+	int *sock;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "s#i:sendall", &buffer, &len, &flags)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_send(*sock, buffer, len, flags);
+	if (status < 0) {
+		PyErr_SetFromErrno(py_socket_error);
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_sendto(pytalloc_Object *self, PyObject *args)
+{
+	PyObject *pyaddr;
+	char *buffer;
+	int len, flags;
+	int *sock;
+	struct sockaddr addr;
+	socklen_t addrlen;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "s#iO:sendto", &buffer, &len, &flags, &pyaddr)) {
+		return NULL;
+	}
+
+	if (!py_socket_tuple_to_addr(pyaddr, &addr, &addrlen)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_sendto(*sock, buffer, len, flags, &addr, addrlen);
+	if (status < 0) {
+		PyErr_SetFromErrno(py_socket_error);
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_setblocking(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_setsockopt(pytalloc_Object *self, PyObject *args)
+{
+	int level, optname;
+	int *sock;
+	PyObject *pyval;
+	int optval;
+	Py_ssize_t optlen;
+	char *buffer;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "iiO:getsockopt", &level, &optname, &pyval)) {
+		return NULL;
+	}
+
+	if (PyInt_Check(pyval)) {
+		optval = PyInt_AsLong(pyval);
+		buffer = (char *)&optval;
+		optlen = sizeof(int);
+	} else {
+		PyString_AsStringAndSize(pyval, &buffer, &optlen);
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_setsockopt(*sock, level, optname, (void *)buffer, optlen);
+	if (status < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	Py_RETURN_NONE;
+}
+
+static PyObject *py_socket_settimeout(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_shutdown(pytalloc_Object *self, PyObject *args)
+{
+	PyErr_SetString(py_socket_error, "Not Supported");
+	return NULL;
+}
+
+static PyObject *py_socket_write(pytalloc_Object *self, PyObject *args)
+{
+	char *buffer;
+	int len;
+	int *sock;
+	int status;
+
+	if (!PyArg_ParseTuple(args, "s#:write", &buffer, &len)) {
+		return NULL;
+	}
+
+	sock = pytalloc_get_ptr(self);
+
+	status = swrap_send(*sock, buffer, len, 0);
+	if (status < 0) {
+		PyErr_SetFromErrno(py_socket_error);
+		return NULL;
+	}
+
+	Py_RETURN_NONE;
+}
+
+
+static PyMethodDef py_socket_methods[] = {
+	{ "accept", (PyCFunction)py_socket_accept, METH_NOARGS,
+		"accept() -> (socket object, address info)\n\n \
+		Wait for an incoming connection." },
+	{ "bind", (PyCFunction)py_socket_bind, METH_VARARGS,
+		"bind(address)\n\n \
+		Bind the socket to a local address." },
+	{ "close", (PyCFunction)py_socket_close, METH_NOARGS,
+		"close()\n\n \
+		Close the socket." },
+	{ "connect", (PyCFunction)py_socket_connect, METH_VARARGS,
+		"connect(address)\n\n \
+		Connect the socket to a remote address." },
+	{ "connect_ex", (PyCFunction)py_socket_connect_ex, METH_VARARGS,
+		"connect_ex(address)\n\n \
+		Connect the socket to a remote address." },
+	{ "dup", (PyCFunction)py_socket_dup, METH_VARARGS,
+		"dup() -> socket object\n\n \
+		Return a new socket object connected to the same system resource." },
+	{ "dup2", (PyCFunction)py_socket_dup2, METH_VARARGS,
+		"dup2(socket object) -> socket object\n\n \
+		Return a new socket object connected to teh same system resource." },
+	{ "fileno", (PyCFunction)py_socket_fileno, METH_NOARGS,
+		"fileno() -> file descriptor\n\n \
+		Return socket's file descriptor." },
+	{ "getpeername", (PyCFunction)py_socket_getpeername, METH_NOARGS,
+		"getpeername() -> address info\n\n \
+		Return the address of the remote endpoint." },
+	{ "getsockname", (PyCFunction)py_socket_getsockname, METH_NOARGS,
+		"getsockname() -> address info\n\n \
+		Return the address of the local endpoing." },
+	{ "getsockopt", (PyCFunction)py_socket_getsockopt, METH_VARARGS,
+		"getsockopt(level, option[, buffersize]) -> value\n\n \
+		Get a socket option." },
+	{ "gettimeout", (PyCFunction)py_socket_gettimeout, METH_NOARGS,
+		"gettimeout() -> value\n\n \
+		Return the timeout in seconds associated with socket operations." },
+	{ "listen", (PyCFunction)py_socket_listen, METH_VARARGS,
+		"listen(backlog)\n\n \
+		Enable a server to accept connections." },
+	{ "makefile", (PyCFunction)py_socket_makefile, METH_NOARGS,
+		"makefile() -> file object\n\n \
+		Return a file object associated with the socket." },
+	{ "read", (PyCFunction)py_socket_read, METH_VARARGS,
+		"read(buflen) -> data\n\n \
+		Receive data." },
+	{ "recv", (PyCFunction)py_socket_recv, METH_VARARGS,
+		"recv(buflen, flags) -> data\n\n \
+		Receive data." },
+	{ "recvfrom", (PyCFunction)py_socket_recvfrom, METH_VARARGS,
+		"recvfrom(buflen, flags) -> (data, sender address)\n\n \
+		Receive data and sender's address." },
+	{ "send", (PyCFunction)py_socket_send, METH_VARARGS,
+		"send(data, flags)\n\n \
+		Send data." },
+	{ "sendall", (PyCFunction)py_socket_sendall, METH_VARARGS,
+		"sendall(data, flags)\n\n \
+		Send data." },
+	{ "sendto", (PyCFunction)py_socket_sendto, METH_VARARGS,
+		"sendto(data, flags, addr)\n\n \
+		Send data to a given address." },
+	{ "setblocking", (PyCFunction)py_socket_setblocking, METH_VARARGS,
+		"setblocking(flag)\n\n \
+		Set blocking or non-blocking mode of the socket." },
+	{ "setsockopt", (PyCFunction)py_socket_setsockopt, METH_VARARGS,
+		"setsockopt(level, option, value)\n\n \
+		Set a socket option." },
+	{ "settimeout", (PyCFunction)py_socket_settimeout, METH_VARARGS,
+		"settimeout(value)\n\n \
+		Set a timeout on socket blocking operations." },
+	{ "shutdown", (PyCFunction)py_socket_shutdown, METH_VARARGS,
+		"shutdown(how)\n\n \
+		Shut down one or both halves of the connection." },
+	{ "write", (PyCFunction)py_socket_write, METH_VARARGS,
+		"write(data)\n\n \
+		Send data." },
+	{ NULL },
+};
+
+
+static PyObject *py_socket_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+	int family, sock_type, protocol;
+	int *sock;
+	PyObject *pysocket;
+
+	if (!PyArg_ParseTuple(args, "iii:socket", &family, &sock_type, &protocol)) {
+		return NULL;
+	}
+
+	sock = talloc_zero(NULL, int);
+	if (sock == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	*sock = swrap_socket(family, sock_type, protocol);
+	if (*sock < 0) {
+		return PyErr_SetFromErrno(py_socket_error);
+	}
+
+	if ((pysocket = pytalloc_steal(type, sock)) == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	return pysocket;
+}
+
+
+static PyTypeObject PySocket = {
+	.tp_name = "socket_wrapper.socket",
+	.tp_basicsize = sizeof(pytalloc_Object),
+	.tp_flags = Py_TPFLAGS_DEFAULT,
+	.tp_methods = py_socket_methods,
+	.tp_new = py_socket_new,
+	.tp_doc = "socket(family, type, proto) -> socket object\n\n Open a socket of the give type.",
+};
+
+static PyObject *py_socket_wrapper_dir(PyObject *self)
+{
+	const char *dir;
+
+	dir = socket_wrapper_dir();
+
+	return PyString_FromString(dir);
+}
+
+static PyObject *py_socket_wrapper_default_interface(PyObject *self)
+{
+	unsigned int id;
+
+	id = socket_wrapper_default_iface();
+
+	return PyInt_FromLong(id);
+}
+
+
+static PyMethodDef py_socket_wrapper_methods[] = {
+	{ "dir", (PyCFunction)py_socket_wrapper_dir, METH_NOARGS,
+		"dir() -> path\n\n \
+		Return socket_wrapper directory." },
+	{ "default_iface", (PyCFunction)py_socket_wrapper_default_interface, METH_NOARGS,
+		"default_iface() -> id\n\n \
+		Return default interface id." },
+	{ NULL },
+};
+
+void initsocket_wrapper(void)
+{
+	PyObject *m;
+	char exception_name[] = "socket_wrapper.error";
+
+	PyTypeObject *talloc_type = pytalloc_GetObjectType();
+	if (talloc_type == NULL) {
+		return;
+	}
+
+	PySocket.tp_base = talloc_type;
+	if (PyType_Ready(&PySocket) < 0) {
+		return;
+	}
+
+	m = Py_InitModule3("socket_wrapper", py_socket_wrapper_methods, "Socket wrapper");
+	if (m == NULL) {
+		return;
+	}
+
+	py_socket_error = PyErr_NewException(exception_name, NULL, NULL);
+	Py_INCREF(py_socket_error);
+	PyModule_AddObject(m, "error", py_socket_error);
+
+	Py_INCREF(&PySocket);
+	PyModule_AddObject(m, "socket", (PyObject *)&PySocket);
+}
diff --git a/lib/socket_wrapper/socket.py b/lib/socket_wrapper/socket.py
new file mode 100644
index 0000000000..bba96653af
--- /dev/null
+++ b/lib/socket_wrapper/socket.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+#
+# Wrapper for socket wrapper (based on python socket wrapper)
+# Copyright (C) Amitay Isaacs 2011
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+#
+
+import _socket
+from _socket import *
+
+from samba.socket_wrapper import socket
+
+
+def getfqdn(name=''):
+    """Get fully qualified domain name from name.
+
+    An empty argument is interpreted as meaning the local host.
+
+    First the hostname returned by gethostbyaddr() is checked, then
+    possibly existing aliases. In case no FQDN is available, hostname
+    from gethostname() is returned.
+    """
+    name = name.strip()
+    if not name or name == '0.0.0.0':
+        name = gethostname()
+    try:
+        hostname, aliases, ipaddrs = gethostbyaddr(name)
+    except error:
+        pass
+    else:
+        aliases.insert(0, hostname)
+        for name in aliases:
+            if '.' in name:
+                break
+        else:
+            name = hostname
+    return name
+
+
+_GLOBAL_DEFAULT_TIMEOUT = object()
diff --git a/lib/socket_wrapper/wscript_build b/lib/socket_wrapper/wscript_build
index a81c7aa61a..c4b94147d6 100644
--- a/lib/socket_wrapper/wscript_build
+++ b/lib/socket_wrapper/wscript_build
@@ -7,3 +7,13 @@ bld.SAMBA_LIBRARY('socket_wrapper',
                   enabled=bld.CONFIG_SET('SOCKET_WRAPPER'),
                   deps='replace')
 
+bld.SAMBA_PYTHON('py_socket_wrapper',
+                source='py_socket_wrapper.c',
+                deps='socket_wrapper',
+                public_deps='talloc pytalloc-util',
+                realname='samba/socket_wrapper.so')
+
+bld.SAMBA_SCRIPT('python_socket',
+                pattern='socket.py',
+                installdir='python',
+                installname='samba/socket.py')