2 Unix SMB/CIFS implementation.
3 Set NT and POSIX ACLs and other VFS operations from Python
5 Copyrigyt (C) Andrew Bartlett 2012
6 Copyright (C) Jeremy Allison 1994-2009.
7 Copyright (C) Andreas Gruenbacher 2002.
8 Copyright (C) Simo Sorce <idra@samba.org> 2009.
9 Copyright (C) Simo Sorce 2002
10 Copyright (C) Eric Lorimer 2002
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "smbd/smbd.h"
29 #include "libcli/util/pyerrors.h"
30 #include "librpc/rpc/pyrpc_util.h"
32 #include "system/filesys.h"
34 extern const struct generic_mapping file_generic_mapping;
37 #define DBGC_CLASS DBGC_ACLS
39 static int conn_free_wrapper(connection_struct *conn)
45 static connection_struct *get_conn(TALLOC_CTX *mem_ctx, const char *service)
47 connection_struct *conn;
48 TALLOC_CTX *frame = talloc_stackframe();
52 if (!posix_locking_init(false)) {
59 snum = lp_servicenumber(service);
62 PyErr_SetString(PyExc_RuntimeError, "unknown service");
67 status = create_conn_struct(mem_ctx, NULL, NULL, &conn, snum, "/",
69 PyErr_NTSTATUS_IS_ERR_RAISE(status);
72 /* Ignore read-only and share restrictions */
73 conn->read_only = false;
74 conn->share_access = SEC_RIGHTS_FILE_ALL;
75 talloc_set_destructor(conn, conn_free_wrapper);
79 static NTSTATUS set_sys_acl_conn(const char *fname,
80 SMB_ACL_TYPE_T acltype,
81 SMB_ACL_T theacl, connection_struct *conn)
83 NTSTATUS status = NT_STATUS_OK;
87 TALLOC_CTX *frame = talloc_stackframe();
89 /* we want total control over the permissions on created files,
90 so set our umask to 0 */
91 saved_umask = umask(0);
93 ret = SMB_VFS_SYS_ACL_SET_FILE( conn, fname, acltype, theacl);
95 status = map_nt_error_from_unix_common(ret);
96 DEBUG(0,("set_sys_acl_conn: SMB_VFS_SYS_ACL_SET_FILE "
106 static NTSTATUS set_nt_acl_conn(const char *fname,
107 uint32 security_info_sent, const struct security_descriptor *sd,
108 connection_struct *conn)
110 TALLOC_CTX *frame = talloc_stackframe();
111 NTSTATUS status = NT_STATUS_OK;
113 struct smb_filename *smb_fname = NULL;
117 fsp = talloc_zero(frame, struct files_struct);
120 return NT_STATUS_NO_MEMORY;
122 fsp->fh = talloc(fsp, struct fd_handle);
123 if (fsp->fh == NULL) {
125 return NT_STATUS_NO_MEMORY;
129 /* we want total control over the permissions on created files,
130 so set our umask to 0 */
131 saved_umask = umask(0);
133 status = create_synthetic_smb_fname_split(fsp, fname, NULL,
135 if (!NT_STATUS_IS_OK(status)) {
141 fsp->fsp_name = smb_fname;
144 flags = O_RDONLY|O_DIRECTORY;
146 /* POSIX allows us to open a directory with O_RDONLY. */
150 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, O_RDWR, 00400);
151 if (fsp->fh->fd == -1 && errno == EISDIR) {
152 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, 00400);
154 if (fsp->fh->fd == -1) {
155 printf("open: error=%d (%s)\n", errno, strerror(errno));
158 return NT_STATUS_UNSUCCESSFUL;
161 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
163 /* If we have an fd, this stat should succeed. */
164 DEBUG(0,("Error doing fstat on open file %s "
166 smb_fname_str_dbg(smb_fname),
170 return map_nt_error_from_unix(errno);
173 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
174 fsp->vuid = UID_FIELD_INVALID;
176 fsp->can_lock = True;
177 fsp->can_read = True;
178 fsp->can_write = True;
179 fsp->print_file = NULL;
180 fsp->modified = False;
181 fsp->sent_oplock_break = NO_BREAK_SENT;
182 fsp->is_directory = S_ISDIR(smb_fname->st.st_ex_mode);
184 status = SMB_VFS_FSET_NT_ACL( fsp, security_info_sent, sd);
185 if (!NT_STATUS_IS_OK(status)) {
186 DEBUG(0,("set_nt_acl_no_snum: fset_nt_acl returned %s.\n", nt_errstr(status)));
198 static NTSTATUS get_nt_acl_conn(TALLOC_CTX *mem_ctx,
200 connection_struct *conn,
201 uint32 security_info_wanted,
202 struct security_descriptor **sd)
204 TALLOC_CTX *frame = talloc_stackframe();
205 NTSTATUS status = SMB_VFS_GET_NT_ACL( conn, fname, security_info_wanted,
207 if (!NT_STATUS_IS_OK(status)) {
208 DEBUG(0,("get_nt_acl_conn: get_nt_acl returned %s.\n", nt_errstr(status)));
217 static SMB_ACL_T make_simple_acl(gid_t gid, mode_t chmod_mode)
219 TALLOC_CTX *frame = talloc_stackframe();
221 mode_t mode = SMB_ACL_READ|SMB_ACL_WRITE|SMB_ACL_EXECUTE;
223 mode_t mode_user = (chmod_mode & 0700) >> 6;
224 mode_t mode_group = (chmod_mode & 070) >> 3;
225 mode_t mode_other = chmod_mode & 07;
226 SMB_ACL_ENTRY_T entry;
227 SMB_ACL_T acl = sys_acl_init(frame);
233 if (sys_acl_create_entry(&acl, &entry) != 0) {
238 if (sys_acl_set_tag_type(entry, SMB_ACL_USER_OBJ) != 0) {
243 if (sys_acl_set_permset(entry, &mode_user) != 0) {
248 if (sys_acl_create_entry(&acl, &entry) != 0) {
253 if (sys_acl_set_tag_type(entry, SMB_ACL_GROUP_OBJ) != 0) {
258 if (sys_acl_set_permset(entry, &mode_group) != 0) {
263 if (sys_acl_create_entry(&acl, &entry) != 0) {
268 if (sys_acl_set_tag_type(entry, SMB_ACL_OTHER) != 0) {
273 if (sys_acl_set_permset(entry, &mode_other) != 0) {
279 if (sys_acl_create_entry(&acl, &entry) != 0) {
284 if (sys_acl_set_tag_type(entry, SMB_ACL_GROUP) != 0) {
289 if (sys_acl_set_qualifier(entry, &gid) != 0) {
294 if (sys_acl_set_permset(entry, &mode_group) != 0) {
300 if (sys_acl_create_entry(&acl, &entry) != 0) {
305 if (sys_acl_set_tag_type(entry, SMB_ACL_MASK) != 0) {
310 if (sys_acl_set_permset(entry, &mode) != 0) {
318 set a simple ACL on a file, as a test
320 static PyObject *py_smbd_set_simple_acl(PyObject *self, PyObject *args, PyObject *kwargs)
322 const char * const kwnames[] = { "fname", "mode", "gid", "service", NULL };
324 char *fname, *service = NULL;
328 connection_struct *conn;
330 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "si|iz",
331 discard_const_p(char *, kwnames),
332 &fname, &mode, &gid, &service))
335 acl = make_simple_acl(gid, mode);
337 frame = talloc_stackframe();
339 conn = get_conn(frame, service);
344 status = set_sys_acl_conn(fname, SMB_ACL_TYPE_ACCESS, acl, conn);
349 PyErr_NTSTATUS_IS_ERR_RAISE(status);
357 static PyObject *py_smbd_chown(PyObject *self, PyObject *args, PyObject *kwargs)
359 const char * const kwnames[] = { "fname", "uid", "gid", "service", NULL };
360 connection_struct *conn;
361 NTSTATUS status = NT_STATUS_OK;
364 char *fname, *service = NULL;
369 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sii|z",
370 discard_const_p(char *, kwnames),
371 &fname, &uid, &gid, &service))
374 frame = talloc_stackframe();
376 conn = get_conn(frame, service);
381 /* we want total control over the permissions on created files,
382 so set our umask to 0 */
383 saved_umask = umask(0);
385 ret = SMB_VFS_CHOWN( conn, fname, uid, gid);
387 status = map_nt_error_from_unix_common(errno);
388 DEBUG(0,("chown returned failure: %s\n", strerror(errno)));
395 PyErr_NTSTATUS_IS_ERR_RAISE(status);
403 static PyObject *py_smbd_unlink(PyObject *self, PyObject *args, PyObject *kwargs)
405 const char * const kwnames[] = { "fname", "service", NULL };
406 connection_struct *conn;
407 NTSTATUS status = NT_STATUS_OK;
409 struct smb_filename *smb_fname = NULL;
410 char *fname, *service = NULL;
413 frame = talloc_stackframe();
415 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|z",
416 discard_const_p(char *, kwnames),
422 conn = get_conn(frame, service);
428 status = create_synthetic_smb_fname_split(frame, fname, NULL,
430 if (!NT_STATUS_IS_OK(status)) {
432 PyErr_NTSTATUS_IS_ERR_RAISE(status);
435 ret = SMB_VFS_UNLINK(conn, smb_fname);
437 status = map_nt_error_from_unix_common(errno);
438 DEBUG(0,("unlink returned failure: %s\n", strerror(errno)));
443 PyErr_NTSTATUS_IS_ERR_RAISE(status);
449 check if we have ACL support
451 static PyObject *py_smbd_have_posix_acls(PyObject *self)
453 #ifdef HAVE_POSIX_ACLS
454 return PyBool_FromLong(true);
456 return PyBool_FromLong(false);
461 set the NT ACL on a file
463 static PyObject *py_smbd_set_nt_acl(PyObject *self, PyObject *args, PyObject *kwargs)
465 const char * const kwnames[] = { "fname", "security_info_sent", "sd", "service", NULL };
467 char *fname, *service = NULL;
468 int security_info_sent;
470 struct security_descriptor *sd;
471 connection_struct *conn;
474 frame = talloc_stackframe();
476 if (!PyArg_ParseTupleAndKeywords(args, kwargs,
477 "siO|z", discard_const_p(char *, kwnames),
478 &fname, &security_info_sent, &py_sd, &service)) {
483 if (!py_check_dcerpc_type(py_sd, "samba.dcerpc.security", "descriptor")) {
488 conn = get_conn(frame, service);
494 sd = pytalloc_get_type(py_sd, struct security_descriptor);
496 status = set_nt_acl_conn(fname, security_info_sent, sd, conn);
498 PyErr_NTSTATUS_IS_ERR_RAISE(status);
504 Return the NT ACL on a file
506 static PyObject *py_smbd_get_nt_acl(PyObject *self, PyObject *args, PyObject *kwargs)
508 const char * const kwnames[] = { "fname", "security_info_wanted", "service", NULL };
509 char *fname, *service = NULL;
510 int security_info_wanted;
512 struct security_descriptor *sd;
513 TALLOC_CTX *tmp_ctx = talloc_new(NULL);
514 connection_struct *conn;
517 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "si|z", discard_const_p(char *, kwnames),
518 &fname, &security_info_wanted, &service)) {
519 TALLOC_FREE(tmp_ctx);
523 conn = get_conn(tmp_ctx, service);
525 TALLOC_FREE(tmp_ctx);
529 status = get_nt_acl_conn(tmp_ctx, fname, conn, security_info_wanted, &sd);
530 PyErr_NTSTATUS_IS_ERR_RAISE(status);
532 py_sd = py_return_ndr_struct("samba.dcerpc.security", "descriptor", sd, sd);
534 TALLOC_FREE(tmp_ctx);
540 set the posix (or similar) ACL on a file
542 static PyObject *py_smbd_set_sys_acl(PyObject *self, PyObject *args, PyObject *kwargs)
544 const char * const kwnames[] = { "fname", "acl_type", "acl", "service", NULL };
545 TALLOC_CTX *frame = talloc_stackframe();
547 char *fname, *service = NULL;
549 struct smb_acl_t *acl;
551 connection_struct *conn;
553 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "siO|z",
554 discard_const_p(char *, kwnames),
555 &fname, &acl_type, &py_acl, &service)) {
560 if (!py_check_dcerpc_type(py_acl, "samba.dcerpc.smb_acl", "t")) {
565 conn = get_conn(frame, service);
571 acl = pytalloc_get_type(py_acl, struct smb_acl_t);
573 status = set_sys_acl_conn(fname, acl_type, acl, conn);
574 PyErr_NTSTATUS_IS_ERR_RAISE(status);
581 Return the posix (or similar) ACL on a file
583 static PyObject *py_smbd_get_sys_acl(PyObject *self, PyObject *args, PyObject *kwargs)
585 const char * const kwnames[] = { "fname", "acl_type", "service", NULL };
588 struct smb_acl_t *acl;
590 TALLOC_CTX *frame = talloc_stackframe();
591 TALLOC_CTX *tmp_ctx = talloc_new(NULL);
592 connection_struct *conn;
593 NTSTATUS status = NT_STATUS_OK;
594 char *service = NULL;
600 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "si|z",
601 discard_const_p(char *, kwnames),
602 &fname, &acl_type, &service)) {
604 TALLOC_FREE(tmp_ctx);
608 conn = get_conn(frame, service);
611 TALLOC_FREE(tmp_ctx);
615 acl = SMB_VFS_SYS_ACL_GET_FILE( conn, fname, acl_type, tmp_ctx);
618 TALLOC_FREE(tmp_ctx);
619 status = map_nt_error_from_unix_common(errno);
620 DEBUG(0,("sys_acl_get_file returned NULL: %s\n", strerror(errno)));
621 PyErr_NTSTATUS_IS_ERR_RAISE(status);
624 py_acl = py_return_ndr_struct("samba.dcerpc.smb_acl", "t", acl, acl);
627 TALLOC_FREE(tmp_ctx);
632 static PyMethodDef py_smbd_methods[] = {
634 (PyCFunction)py_smbd_have_posix_acls, METH_NOARGS,
637 (PyCFunction)py_smbd_set_simple_acl, METH_VARARGS|METH_KEYWORDS,
640 (PyCFunction)py_smbd_set_nt_acl, METH_VARARGS|METH_KEYWORDS,
643 (PyCFunction)py_smbd_get_nt_acl, METH_VARARGS|METH_KEYWORDS,
646 (PyCFunction)py_smbd_get_sys_acl, METH_VARARGS|METH_KEYWORDS,
649 (PyCFunction)py_smbd_set_sys_acl, METH_VARARGS|METH_KEYWORDS,
652 (PyCFunction)py_smbd_chown, METH_VARARGS|METH_KEYWORDS,
655 (PyCFunction)py_smbd_unlink, METH_VARARGS|METH_KEYWORDS,
665 m = Py_InitModule3("smbd", py_smbd_methods,
666 "Python bindings for the smbd file server.");