1
0
mirror of https://github.com/samba-team/samba.git synced 2024-12-23 17:34:34 +03:00
samba-mirror/source4/auth/pyauth.c
Andrew Bartlett 5afd206d1d python: Remove const from PyList_AsStringList()
The returned strings are not owned by python, so need not be const.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15289

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2023-07-21 05:23:32 +00:00

508 lines
12 KiB
C

/*
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 <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;
}