mirror of
https://github.com/samba-team/samba.git
synced 2024-12-25 23:21:54 +03:00
338 lines
8.6 KiB
C
338 lines
8.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2011
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <Python.h>
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#include "includes.h"
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#include "libcli/util/pyerrors.h"
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#include "param/param.h"
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#include "pyauth.h"
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#include "pyldb.h"
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#include "auth/system_session_proto.h"
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#include "auth/auth.h"
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#include "param/pyparam.h"
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#include "libcli/security/security.h"
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#include "auth/credentials/pycredentials.h"
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#include <tevent.h>
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#include "librpc/rpc/pyrpc_util.h"
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void initauth(void);
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staticforward PyTypeObject PyAuthContext;
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/* There's no Py_ssize_t in 2.4, apparently */
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#if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 5
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typedef int Py_ssize_t;
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typedef inquiry lenfunc;
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typedef intargfunc ssizeargfunc;
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#endif
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#ifndef Py_RETURN_NONE
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#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
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#endif
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static PyObject *PyAuthSession_FromSession(struct auth_session_info *session)
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{
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return py_return_ndr_struct("samba.dcerpc.auth", "session_info", session, session);
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}
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static PyObject *py_system_session(PyObject *module, PyObject *args)
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{
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PyObject *py_lp_ctx = Py_None;
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struct loadparm_context *lp_ctx = NULL;
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struct auth_session_info *session;
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TALLOC_CTX *mem_ctx;
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if (!PyArg_ParseTuple(args, "|O", &py_lp_ctx))
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return NULL;
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mem_ctx = talloc_new(NULL);
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if (mem_ctx == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
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if (lp_ctx == NULL) {
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talloc_free(mem_ctx);
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return NULL;
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}
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session = system_session(lp_ctx);
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talloc_free(mem_ctx);
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return PyAuthSession_FromSession(session);
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}
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static PyObject *py_admin_session(PyObject *module, PyObject *args)
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{
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PyObject *py_lp_ctx;
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PyObject *py_sid;
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struct loadparm_context *lp_ctx = NULL;
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struct auth_session_info *session;
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struct dom_sid *domain_sid = NULL;
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TALLOC_CTX *mem_ctx;
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if (!PyArg_ParseTuple(args, "OO", &py_lp_ctx, &py_sid))
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return NULL;
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mem_ctx = talloc_new(NULL);
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if (mem_ctx == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
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if (lp_ctx == NULL) {
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talloc_free(mem_ctx);
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return NULL;
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}
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domain_sid = dom_sid_parse_talloc(mem_ctx, PyString_AsString(py_sid));
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if (domain_sid == NULL) {
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PyErr_Format(PyExc_RuntimeError, "Unable to parse sid %s",
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PyString_AsString(py_sid));
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talloc_free(mem_ctx);
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return NULL;
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}
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session = admin_session(NULL, lp_ctx, domain_sid);
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talloc_free(mem_ctx);
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return PyAuthSession_FromSession(session);
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}
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static PyObject *py_user_session(PyObject *module, PyObject *args, PyObject *kwargs)
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{
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NTSTATUS nt_status;
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struct auth_session_info *session;
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TALLOC_CTX *mem_ctx;
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const char * const kwnames[] = { "ldb", "lp_ctx", "principal", "dn", "session_info_flags", NULL };
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struct ldb_context *ldb_ctx;
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PyObject *py_ldb = Py_None;
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PyObject *py_dn = Py_None;
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PyObject *py_lp_ctx = Py_None;
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struct loadparm_context *lp_ctx = NULL;
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struct ldb_dn *user_dn;
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char *principal = NULL;
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int session_info_flags = 0; /* This is an int, because that's
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* what we need for the python
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* PyArg_ParseTupleAndKeywords */
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|OzOi",
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discard_const_p(char *, kwnames),
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&py_ldb, &py_lp_ctx, &principal, &py_dn, &session_info_flags)) {
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return NULL;
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}
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mem_ctx = talloc_new(NULL);
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if (mem_ctx == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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ldb_ctx = pyldb_Ldb_AsLdbContext(py_ldb);
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if (py_dn == Py_None) {
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user_dn = NULL;
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} else {
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if (!pyldb_Object_AsDn(ldb_ctx, py_dn, ldb_ctx, &user_dn)) {
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talloc_free(mem_ctx);
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return NULL;
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}
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}
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lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
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if (lp_ctx == NULL) {
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talloc_free(mem_ctx);
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return NULL;
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}
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nt_status = authsam_get_session_info_principal(mem_ctx, lp_ctx, ldb_ctx, principal, user_dn,
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session_info_flags, &session);
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(mem_ctx);
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PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
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}
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talloc_steal(NULL, session);
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talloc_free(mem_ctx);
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return PyAuthSession_FromSession(session);
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}
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static const char **PyList_AsStringList(TALLOC_CTX *mem_ctx, PyObject *list,
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const char *paramname)
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{
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const char **ret;
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Py_ssize_t i;
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if (!PyList_Check(list)) {
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PyErr_Format(PyExc_TypeError, "%s is not a list", paramname);
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return NULL;
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}
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ret = talloc_array(NULL, const char *, PyList_Size(list)+1);
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if (ret == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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for (i = 0; i < PyList_Size(list); i++) {
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PyObject *item = PyList_GetItem(list, i);
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if (!PyString_Check(item)) {
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PyErr_Format(PyExc_TypeError, "%s should be strings", paramname);
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return NULL;
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}
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ret[i] = talloc_strndup(ret, PyString_AsString(item),
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PyString_Size(item));
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}
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ret[i] = NULL;
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return ret;
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}
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static PyObject *PyAuthContext_FromContext(struct auth4_context *auth_context)
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{
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return pytalloc_reference(&PyAuthContext, auth_context);
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}
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static PyObject *py_auth_context_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
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{
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PyObject *py_lp_ctx = Py_None;
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PyObject *py_ldb = Py_None;
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PyObject *py_imessaging_ctx = Py_None;
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PyObject *py_auth_context = Py_None;
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PyObject *py_methods = Py_None;
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TALLOC_CTX *mem_ctx;
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struct auth4_context *auth_context;
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struct imessaging_context *imessaging_context = NULL;
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struct loadparm_context *lp_ctx;
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struct tevent_context *ev;
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struct ldb_context *ldb;
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NTSTATUS nt_status;
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const char **methods;
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const char * const kwnames[] = { "lp_ctx", "messaging_ctx", "ldb", "methods", NULL };
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOOO",
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discard_const_p(char *, kwnames),
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&py_lp_ctx, &py_imessaging_ctx, &py_ldb, &py_methods))
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return NULL;
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mem_ctx = talloc_new(NULL);
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if (mem_ctx == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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if (py_ldb != Py_None) {
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ldb = pyldb_Ldb_AsLdbContext(py_ldb);
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}
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lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
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ev = tevent_context_init(mem_ctx);
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if (ev == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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if (py_imessaging_ctx != Py_None) {
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imessaging_context = pytalloc_get_type(py_imessaging_ctx, struct imessaging_context);
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}
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if (py_methods == Py_None && py_ldb == Py_None) {
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nt_status = auth_context_create(mem_ctx, ev, imessaging_context, lp_ctx, &auth_context);
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} else {
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if (py_methods != Py_None) {
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methods = PyList_AsStringList(mem_ctx, py_methods, "methods");
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if (methods == NULL) {
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talloc_free(mem_ctx);
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return NULL;
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}
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} else {
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methods = auth_methods_from_lp(mem_ctx, lp_ctx);
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}
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nt_status = auth_context_create_methods(mem_ctx, methods, ev,
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imessaging_context, lp_ctx,
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ldb, &auth_context);
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}
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(mem_ctx);
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PyErr_NTSTATUS_IS_ERR_RAISE(nt_status);
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}
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if (!talloc_reference(auth_context, lp_ctx)) {
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talloc_free(mem_ctx);
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PyErr_NoMemory();
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return NULL;
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}
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if (!talloc_reference(auth_context, ev)) {
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talloc_free(mem_ctx);
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PyErr_NoMemory();
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return NULL;
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}
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py_auth_context = PyAuthContext_FromContext(auth_context);
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talloc_free(mem_ctx);
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return py_auth_context;
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}
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static PyTypeObject PyAuthContext = {
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.tp_name = "AuthContext",
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.tp_basicsize = sizeof(pytalloc_Object),
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.tp_flags = Py_TPFLAGS_DEFAULT,
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.tp_new = py_auth_context_new,
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};
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static PyMethodDef py_auth_methods[] = {
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{ "system_session", (PyCFunction)py_system_session, METH_VARARGS, NULL },
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{ "admin_session", (PyCFunction)py_admin_session, METH_VARARGS, NULL },
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{ "user_session", (PyCFunction)py_user_session, METH_VARARGS|METH_KEYWORDS, NULL },
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{ NULL },
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};
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void initauth(void)
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{
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PyObject *m;
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PyAuthContext.tp_base = pytalloc_GetObjectType();
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if (PyAuthContext.tp_base == NULL)
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return;
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if (PyType_Ready(&PyAuthContext) < 0)
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return;
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m = Py_InitModule3("auth", py_auth_methods,
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"Authentication and authorization support.");
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if (m == NULL)
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return;
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Py_INCREF(&PyAuthContext);
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PyModule_AddObject(m, "AuthContext", (PyObject *)&PyAuthContext);
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#define ADD_FLAG(val) PyModule_AddObject(m, #val, PyInt_FromLong(val))
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ADD_FLAG(AUTH_SESSION_INFO_DEFAULT_GROUPS);
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ADD_FLAG(AUTH_SESSION_INFO_AUTHENTICATED);
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ADD_FLAG(AUTH_SESSION_INFO_SIMPLE_PRIVILEGES);
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}
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