Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 507 insertions, 0 deletions

diff --git a/source4/auth/pyauth.c b/source4/auth/pyauth.c
new file mode 100644
index 0000000..498b52e
--- /dev/null
+++ b/source4/auth/pyauth.c
@@ -0,0 +1,507 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 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/>.
+*/
+
+#include "lib/replace/system/python.h"
+#include "python/py3compat.h"
+#include "includes.h"
+#include "python/modules.h"
+#include "libcli/util/pyerrors.h"
+#include "param/param.h"
+#include "pyauth.h"
+#include "pyldb.h"
+#include "auth/system_session_proto.h"
+#include "auth/auth.h"
+#include "auth/auth_util.h"
+#include "param/pyparam.h"
+#include "libcli/security/security.h"
+#include "auth/credentials/pycredentials.h"
+#include <tevent.h>
+#include "librpc/rpc/pyrpc_util.h"
+#include "lib/events/events.h"
+
+static PyTypeObject PyAuthContext;
+
+static PyObject *PyAuthSession_FromSession(struct auth_session_info *session)
+{
+	return py_return_ndr_struct("samba.dcerpc.auth", "session_info", session, session);
+}
+
+static PyObject *py_copy_session_info(PyObject *module,
+				      PyObject *args,
+				      PyObject *kwargs)
+{
+	PyObject *py_session = Py_None;
+	PyObject *result = Py_None;
+	struct auth_session_info *session = NULL;
+	struct auth_session_info *session_duplicate = NULL;
+	TALLOC_CTX *frame;
+	int ret = 1;
+
+	const char * const kwnames[] = { "session_info", NULL };
+
+	ret = PyArg_ParseTupleAndKeywords(args,
+					  kwargs,
+					  "O",
+					  discard_const_p(char *, kwnames),
+					  &py_session);
+	if (!ret) {
+		return NULL;
+	}
+
+	ret = py_check_dcerpc_type(py_session,
+				   "samba.dcerpc.auth",
+				   "session_info");
+	if (!ret) {
+		return NULL;
+	}
+	session = pytalloc_get_type(py_session,
+				    struct auth_session_info);
+	if (!session) {
+		PyErr_Format(PyExc_TypeError,
+			     "Expected auth_session_info for session_info "
+			     "argument got %s",
+			     pytalloc_get_name(py_session));
+		return NULL;
+	}
+
+	frame = talloc_stackframe();
+	if (frame == NULL) {
+		return PyErr_NoMemory();
+	}
+
+	session_duplicate = copy_session_info(frame, session);
+	if (session_duplicate == NULL) {
+		TALLOC_FREE(frame);
+		return PyErr_NoMemory();
+	}
+
+	result = PyAuthSession_FromSession(session_duplicate);
+	TALLOC_FREE(frame);
+	return result;
+}
+
+static PyObject *py_system_session(PyObject *module, PyObject *args)
+{
+	PyObject *py_lp_ctx = Py_None;
+	struct loadparm_context *lp_ctx = NULL;
+	struct auth_session_info *session;
+	TALLOC_CTX *mem_ctx;
+	if (!PyArg_ParseTuple(args, "|O", &py_lp_ctx))
+		return NULL;
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	session = system_session(lp_ctx);
+
+	talloc_free(mem_ctx);
+
+	return PyAuthSession_FromSession(session);
+}
+
+
+static PyObject *py_admin_session(PyObject *module, PyObject *args)
+{
+	PyObject *py_lp_ctx;
+	const char *sid;
+	struct loadparm_context *lp_ctx = NULL;
+	struct auth_session_info *session;
+	struct dom_sid *domain_sid = NULL;
+	TALLOC_CTX *mem_ctx;
+
+	if (!PyArg_ParseTuple(args, "Os", &py_lp_ctx, &sid))
+		return NULL;
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	domain_sid = dom_sid_parse_talloc(mem_ctx, sid);
+	if (domain_sid == NULL) {
+		PyErr_Format(PyExc_RuntimeError, "Unable to parse sid %s", sid);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	session = admin_session(NULL, lp_ctx, domain_sid);
+	talloc_free(mem_ctx);
+
+	return PyAuthSession_FromSession(session);
+}
+
+static PyObject *py_user_session(PyObject *module, PyObject *args, PyObject *kwargs)
+{
+	NTSTATUS nt_status;
+	struct auth_session_info *session;
+	TALLOC_CTX *mem_ctx;
+	const char * const kwnames[] = { "ldb", "lp_ctx", "principal", "dn", "session_info_flags", NULL };
+	struct ldb_context *ldb_ctx;
+	PyObject *py_ldb = Py_None;
+	PyObject *py_dn = Py_None;
+	PyObject *py_lp_ctx = Py_None;
+	struct loadparm_context *lp_ctx = NULL;
+	struct ldb_dn *user_dn;
+	char *principal = NULL;
+	int session_info_flags = 0; /* This is an int, because that's
+				 * what we need for the python
+				 * PyArg_ParseTupleAndKeywords */
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|OzOi",
+					 discard_const_p(char *, kwnames),
+					 &py_ldb, &py_lp_ctx, &principal, &py_dn, &session_info_flags)) {
+		return NULL;
+	}
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	ldb_ctx = pyldb_Ldb_AsLdbContext(py_ldb);
+	if (ldb_ctx == NULL) {
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	if (py_dn == Py_None) {
+		user_dn = NULL;
+	} else {
+		if (!pyldb_Object_AsDn(ldb_ctx, py_dn, ldb_ctx, &user_dn)) {
+			talloc_free(mem_ctx);
+			return NULL;
+		}
+	}
+
+	lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	nt_status = authsam_get_session_info_principal(mem_ctx, lp_ctx, ldb_ctx, principal, user_dn,
+						       session_info_flags, &session);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
+	}
+
+	talloc_steal(NULL, session);
+	talloc_free(mem_ctx);
+
+	return PyAuthSession_FromSession(session);
+}
+
+static PyObject *py_session_info_fill_unix(PyObject *module,
+					   PyObject *args,
+					   PyObject *kwargs)
+{
+	NTSTATUS nt_status;
+	char *user_name = NULL;
+	struct loadparm_context *lp_ctx = NULL;
+	struct auth_session_info *session_info;
+	PyObject *py_lp_ctx = Py_None;
+	PyObject *py_session = Py_None;
+	TALLOC_CTX *frame;
+
+	const char * const kwnames[] = { "session_info",
+					 "user_name",
+					 "lp_ctx",
+					 NULL };
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Oz|O",
+					 discard_const_p(char *, kwnames),
+					 &py_session,
+					 &user_name,
+					 &py_lp_ctx)) {
+		return NULL;
+	}
+
+	if (!py_check_dcerpc_type(py_session,
+				  "samba.dcerpc.auth",
+				  "session_info")) {
+		return NULL;
+	}
+	session_info = pytalloc_get_type(py_session,
+					 struct auth_session_info);
+	if (!session_info) {
+		PyErr_Format(PyExc_TypeError,
+			     "Expected auth_session_info for session_info argument got %s",
+			     pytalloc_get_name(py_session));
+		return NULL;
+	}
+
+	frame = talloc_stackframe();
+	
+	lp_ctx = lpcfg_from_py_object(frame, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		TALLOC_FREE(frame);
+		return NULL;
+	}
+
+	nt_status = auth_session_info_fill_unix(lp_ctx,
+					       user_name,
+					       session_info);
+	TALLOC_FREE(frame);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
+	}
+
+	Py_RETURN_NONE;
+}
+
+
+static PyObject *py_session_info_set_unix(PyObject *module,
+					  PyObject *args,
+					  PyObject *kwargs)
+{
+	NTSTATUS nt_status;
+	char *user_name = NULL;
+	int uid = -1;
+	int gid = -1;
+	struct loadparm_context *lp_ctx = NULL;
+	struct auth_session_info *session_info;
+	PyObject *py_lp_ctx = Py_None;
+	PyObject *py_session = Py_None;
+	TALLOC_CTX *frame;
+
+	const char * const kwnames[] = { "session_info",
+					 "user_name",
+					 "uid",
+					 "gid",
+					 "lp_ctx",
+					 NULL };
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Ozii|O",
+					 discard_const_p(char *, kwnames),
+					 &py_session,
+					 &user_name,
+					 &uid,
+					 &gid,
+					 &py_lp_ctx)) {
+		return NULL;
+	}
+
+	if (!py_check_dcerpc_type(py_session,
+				  "samba.dcerpc.auth",
+				  "session_info")) {
+		return NULL;
+	}
+	session_info = pytalloc_get_type(py_session,
+					 struct auth_session_info);
+	if (!session_info) {
+		PyErr_Format(PyExc_TypeError,
+			     "Expected auth_session_info for session_info "
+			     "argument got %s",
+			     pytalloc_get_name(py_session));
+		return NULL;
+	}
+
+	frame = talloc_stackframe();
+
+	lp_ctx = lpcfg_from_py_object(frame, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		TALLOC_FREE(frame);
+		return NULL;
+	}
+
+	nt_status = auth_session_info_set_unix(lp_ctx,
+					       user_name,
+					       uid,
+					       gid,
+					       session_info);
+	TALLOC_FREE(frame);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
+	}
+
+	Py_RETURN_NONE;
+}
+
+
+static PyObject *PyAuthContext_FromContext(struct auth4_context *auth_context)
+{
+	return pytalloc_reference(&PyAuthContext, auth_context);
+}
+
+static PyObject *py_auth_context_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+	PyObject *py_lp_ctx = Py_None;
+	PyObject *py_ldb = Py_None;
+	PyObject *py_auth_context = Py_None;
+	PyObject *py_methods = Py_None;
+	TALLOC_CTX *mem_ctx;
+	struct auth4_context *auth_context;
+	struct loadparm_context *lp_ctx;
+	struct tevent_context *ev;
+	struct ldb_context *ldb = NULL;
+	NTSTATUS nt_status;
+	const char *const *methods;
+
+	const char *const kwnames[] = {"lp_ctx", "ldb", "methods", NULL};
+
+	if (!PyArg_ParseTupleAndKeywords(args,
+					 kwargs,
+					 "|OOO",
+					 discard_const_p(char *, kwnames),
+					 &py_lp_ctx,
+					 &py_ldb,
+					 &py_methods))
+		return NULL;
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	if (py_ldb != Py_None) {
+		ldb = pyldb_Ldb_AsLdbContext(py_ldb);
+		if (ldb == NULL) {
+			talloc_free(mem_ctx);
+			return NULL;
+		}
+	}
+
+	lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		talloc_free(mem_ctx);
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	ev = s4_event_context_init(mem_ctx);
+	if (ev == NULL) {
+		talloc_free(mem_ctx);
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	if (py_methods == Py_None && py_ldb == Py_None) {
+		nt_status = auth_context_create(
+		    mem_ctx, ev, NULL, lp_ctx, &auth_context);
+	} else {
+		if (py_methods != Py_None) {
+			methods = (const char * const *)PyList_AsStringList(mem_ctx, py_methods, "methods");
+			if (methods == NULL) {
+				talloc_free(mem_ctx);
+				return NULL;
+			}
+		} else {
+			methods = auth_methods_from_lp(mem_ctx, lp_ctx);
+		}
+		nt_status = auth_context_create_methods(
+		    mem_ctx, methods, ev, NULL, lp_ctx, ldb, &auth_context);
+	}
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
+	}
+
+	if (!talloc_reference(auth_context, lp_ctx)) {
+		talloc_free(mem_ctx);
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	if (!talloc_reference(auth_context, ev)) {
+		talloc_free(mem_ctx);
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	py_auth_context = PyAuthContext_FromContext(auth_context);
+
+	talloc_free(mem_ctx);
+
+	return py_auth_context;
+}
+
+static PyTypeObject PyAuthContext = {
+	.tp_name = "AuthContext",
+	.tp_flags = Py_TPFLAGS_DEFAULT,
+	.tp_new = py_auth_context_new,
+};
+
+static PyMethodDef py_auth_methods[] = {
+	{ "system_session", (PyCFunction)py_system_session, METH_VARARGS, NULL },
+	{ "admin_session", (PyCFunction)py_admin_session, METH_VARARGS, NULL },
+	{ "user_session", PY_DISCARD_FUNC_SIG(PyCFunction,py_user_session),
+			  METH_VARARGS|METH_KEYWORDS, NULL },
+	{ "session_info_fill_unix",
+	  PY_DISCARD_FUNC_SIG(PyCFunction,py_session_info_fill_unix),
+	  METH_VARARGS|METH_KEYWORDS,
+	  NULL },
+	{ "session_info_set_unix",
+	  PY_DISCARD_FUNC_SIG(PyCFunction,py_session_info_set_unix),
+	  METH_VARARGS|METH_KEYWORDS,
+	  NULL },
+	{ "copy_session_info",
+	  PY_DISCARD_FUNC_SIG(PyCFunction,py_copy_session_info),
+	  METH_VARARGS|METH_KEYWORDS,
+	  NULL },
+	{0},
+};
+
+static struct PyModuleDef moduledef = {
+	PyModuleDef_HEAD_INIT,
+	.m_name = "auth",
+	.m_doc = "Authentication and authorization support.",
+	.m_size = -1,
+	.m_methods = py_auth_methods,
+};
+
+MODULE_INIT_FUNC(auth)
+{
+	PyObject *m;
+
+	if (pytalloc_BaseObject_PyType_Ready(&PyAuthContext) < 0)
+		return NULL;
+
+	m = PyModule_Create(&moduledef);
+	if (m == NULL)
+		return NULL;
+
+	Py_INCREF(&PyAuthContext);
+	PyModule_AddObject(m, "AuthContext", (PyObject *)&PyAuthContext);
+
+#define ADD_FLAG(val)  PyModule_AddIntConstant(m, #val, val)
+	ADD_FLAG(AUTH_SESSION_INFO_DEFAULT_GROUPS);
+	ADD_FLAG(AUTH_SESSION_INFO_AUTHENTICATED);
+	ADD_FLAG(AUTH_SESSION_INFO_SIMPLE_PRIVILEGES);
+	ADD_FLAG(AUTH_SESSION_INFO_NTLM);
+
+	return m;
+}