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 smb_fname
= synthetic_smb_fname_split(fsp
, fname
, NULL
);
134 if (smb_fname
== NULL
) {
137 return NT_STATUS_NO_MEMORY
;
140 fsp
->fsp_name
= smb_fname
;
143 flags
= O_RDONLY
|O_DIRECTORY
;
145 /* POSIX allows us to open a directory with O_RDONLY. */
149 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, O_RDWR
, 00400);
150 if (fsp
->fh
->fd
== -1 && errno
== EISDIR
) {
151 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, 00400);
153 if (fsp
->fh
->fd
== -1) {
154 printf("open: error=%d (%s)\n", errno
, strerror(errno
));
157 return NT_STATUS_UNSUCCESSFUL
;
160 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
162 /* If we have an fd, this stat should succeed. */
163 DEBUG(0,("Error doing fstat on open file %s "
165 smb_fname_str_dbg(smb_fname
),
169 return map_nt_error_from_unix(errno
);
172 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
173 fsp
->vuid
= UID_FIELD_INVALID
;
175 fsp
->can_lock
= True
;
176 fsp
->can_read
= True
;
177 fsp
->can_write
= True
;
178 fsp
->print_file
= NULL
;
179 fsp
->modified
= False
;
180 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
181 fsp
->is_directory
= S_ISDIR(smb_fname
->st
.st_ex_mode
);
183 status
= SMB_VFS_FSET_NT_ACL( fsp
, security_info_sent
, sd
);
184 if (!NT_STATUS_IS_OK(status
)) {
185 DEBUG(0,("set_nt_acl_no_snum: fset_nt_acl returned %s.\n", nt_errstr(status
)));
197 static NTSTATUS
get_nt_acl_conn(TALLOC_CTX
*mem_ctx
,
199 connection_struct
*conn
,
200 uint32 security_info_wanted
,
201 struct security_descriptor
**sd
)
203 TALLOC_CTX
*frame
= talloc_stackframe();
204 NTSTATUS status
= SMB_VFS_GET_NT_ACL( conn
, fname
, security_info_wanted
,
206 if (!NT_STATUS_IS_OK(status
)) {
207 DEBUG(0,("get_nt_acl_conn: get_nt_acl returned %s.\n", nt_errstr(status
)));
216 static SMB_ACL_T
make_simple_acl(gid_t gid
, mode_t chmod_mode
)
218 TALLOC_CTX
*frame
= talloc_stackframe();
220 mode_t mode
= SMB_ACL_READ
|SMB_ACL_WRITE
|SMB_ACL_EXECUTE
;
222 mode_t mode_user
= (chmod_mode
& 0700) >> 6;
223 mode_t mode_group
= (chmod_mode
& 070) >> 3;
224 mode_t mode_other
= chmod_mode
& 07;
225 SMB_ACL_ENTRY_T entry
;
226 SMB_ACL_T acl
= sys_acl_init(frame
);
232 if (sys_acl_create_entry(&acl
, &entry
) != 0) {
237 if (sys_acl_set_tag_type(entry
, SMB_ACL_USER_OBJ
) != 0) {
242 if (sys_acl_set_permset(entry
, &mode_user
) != 0) {
247 if (sys_acl_create_entry(&acl
, &entry
) != 0) {
252 if (sys_acl_set_tag_type(entry
, SMB_ACL_GROUP_OBJ
) != 0) {
257 if (sys_acl_set_permset(entry
, &mode_group
) != 0) {
262 if (sys_acl_create_entry(&acl
, &entry
) != 0) {
267 if (sys_acl_set_tag_type(entry
, SMB_ACL_OTHER
) != 0) {
272 if (sys_acl_set_permset(entry
, &mode_other
) != 0) {
278 if (sys_acl_create_entry(&acl
, &entry
) != 0) {
283 if (sys_acl_set_tag_type(entry
, SMB_ACL_GROUP
) != 0) {
288 if (sys_acl_set_qualifier(entry
, &gid
) != 0) {
293 if (sys_acl_set_permset(entry
, &mode_group
) != 0) {
299 if (sys_acl_create_entry(&acl
, &entry
) != 0) {
304 if (sys_acl_set_tag_type(entry
, SMB_ACL_MASK
) != 0) {
309 if (sys_acl_set_permset(entry
, &mode
) != 0) {
317 set a simple ACL on a file, as a test
319 static PyObject
*py_smbd_set_simple_acl(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
321 const char * const kwnames
[] = { "fname", "mode", "gid", "service", NULL
};
323 char *fname
, *service
= NULL
;
327 connection_struct
*conn
;
329 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "si|iz",
330 discard_const_p(char *, kwnames
),
331 &fname
, &mode
, &gid
, &service
))
334 acl
= make_simple_acl(gid
, mode
);
336 frame
= talloc_stackframe();
338 conn
= get_conn(frame
, service
);
343 status
= set_sys_acl_conn(fname
, SMB_ACL_TYPE_ACCESS
, acl
, conn
);
348 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
356 static PyObject
*py_smbd_chown(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
358 const char * const kwnames
[] = { "fname", "uid", "gid", "service", NULL
};
359 connection_struct
*conn
;
360 NTSTATUS status
= NT_STATUS_OK
;
363 char *fname
, *service
= NULL
;
368 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "sii|z",
369 discard_const_p(char *, kwnames
),
370 &fname
, &uid
, &gid
, &service
))
373 frame
= talloc_stackframe();
375 conn
= get_conn(frame
, service
);
380 /* we want total control over the permissions on created files,
381 so set our umask to 0 */
382 saved_umask
= umask(0);
384 ret
= SMB_VFS_CHOWN( conn
, fname
, uid
, gid
);
386 status
= map_nt_error_from_unix_common(errno
);
387 DEBUG(0,("chown returned failure: %s\n", strerror(errno
)));
394 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
402 static PyObject
*py_smbd_unlink(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
404 const char * const kwnames
[] = { "fname", "service", NULL
};
405 connection_struct
*conn
;
406 NTSTATUS status
= NT_STATUS_OK
;
408 struct smb_filename
*smb_fname
= NULL
;
409 char *fname
, *service
= NULL
;
412 frame
= talloc_stackframe();
414 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "s|z",
415 discard_const_p(char *, kwnames
),
421 conn
= get_conn(frame
, service
);
427 smb_fname
= synthetic_smb_fname_split(frame
, fname
, NULL
);
428 if (smb_fname
== NULL
) {
430 PyErr_NTSTATUS_IS_ERR_RAISE(NT_STATUS_NO_MEMORY
);
433 ret
= SMB_VFS_UNLINK(conn
, smb_fname
);
435 status
= map_nt_error_from_unix_common(errno
);
436 DEBUG(0,("unlink returned failure: %s\n", strerror(errno
)));
441 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
447 check if we have ACL support
449 static PyObject
*py_smbd_have_posix_acls(PyObject
*self
)
451 #ifdef HAVE_POSIX_ACLS
452 return PyBool_FromLong(true);
454 return PyBool_FromLong(false);
459 set the NT ACL on a file
461 static PyObject
*py_smbd_set_nt_acl(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
463 const char * const kwnames
[] = { "fname", "security_info_sent", "sd", "service", NULL
};
465 char *fname
, *service
= NULL
;
466 int security_info_sent
;
468 struct security_descriptor
*sd
;
469 connection_struct
*conn
;
472 frame
= talloc_stackframe();
474 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
,
475 "siO|z", discard_const_p(char *, kwnames
),
476 &fname
, &security_info_sent
, &py_sd
, &service
)) {
481 if (!py_check_dcerpc_type(py_sd
, "samba.dcerpc.security", "descriptor")) {
486 conn
= get_conn(frame
, service
);
492 sd
= pytalloc_get_type(py_sd
, struct security_descriptor
);
494 status
= set_nt_acl_conn(fname
, security_info_sent
, sd
, conn
);
496 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
502 Return the NT ACL on a file
504 static PyObject
*py_smbd_get_nt_acl(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
506 const char * const kwnames
[] = { "fname", "security_info_wanted", "service", NULL
};
507 char *fname
, *service
= NULL
;
508 int security_info_wanted
;
510 struct security_descriptor
*sd
;
511 TALLOC_CTX
*tmp_ctx
= talloc_new(NULL
);
512 connection_struct
*conn
;
515 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "si|z", discard_const_p(char *, kwnames
),
516 &fname
, &security_info_wanted
, &service
)) {
517 TALLOC_FREE(tmp_ctx
);
521 conn
= get_conn(tmp_ctx
, service
);
523 TALLOC_FREE(tmp_ctx
);
527 status
= get_nt_acl_conn(tmp_ctx
, fname
, conn
, security_info_wanted
, &sd
);
528 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
530 py_sd
= py_return_ndr_struct("samba.dcerpc.security", "descriptor", sd
, sd
);
532 TALLOC_FREE(tmp_ctx
);
538 set the posix (or similar) ACL on a file
540 static PyObject
*py_smbd_set_sys_acl(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
542 const char * const kwnames
[] = { "fname", "acl_type", "acl", "service", NULL
};
543 TALLOC_CTX
*frame
= talloc_stackframe();
545 char *fname
, *service
= NULL
;
547 struct smb_acl_t
*acl
;
549 connection_struct
*conn
;
551 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "siO|z",
552 discard_const_p(char *, kwnames
),
553 &fname
, &acl_type
, &py_acl
, &service
)) {
558 if (!py_check_dcerpc_type(py_acl
, "samba.dcerpc.smb_acl", "t")) {
563 conn
= get_conn(frame
, service
);
569 acl
= pytalloc_get_type(py_acl
, struct smb_acl_t
);
571 status
= set_sys_acl_conn(fname
, acl_type
, acl
, conn
);
572 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
579 Return the posix (or similar) ACL on a file
581 static PyObject
*py_smbd_get_sys_acl(PyObject
*self
, PyObject
*args
, PyObject
*kwargs
)
583 const char * const kwnames
[] = { "fname", "acl_type", "service", NULL
};
586 struct smb_acl_t
*acl
;
588 TALLOC_CTX
*frame
= talloc_stackframe();
589 TALLOC_CTX
*tmp_ctx
= talloc_new(NULL
);
590 connection_struct
*conn
;
591 NTSTATUS status
= NT_STATUS_OK
;
592 char *service
= NULL
;
598 if (!PyArg_ParseTupleAndKeywords(args
, kwargs
, "si|z",
599 discard_const_p(char *, kwnames
),
600 &fname
, &acl_type
, &service
)) {
602 TALLOC_FREE(tmp_ctx
);
606 conn
= get_conn(frame
, service
);
609 TALLOC_FREE(tmp_ctx
);
613 acl
= SMB_VFS_SYS_ACL_GET_FILE( conn
, fname
, acl_type
, tmp_ctx
);
616 TALLOC_FREE(tmp_ctx
);
617 status
= map_nt_error_from_unix_common(errno
);
618 DEBUG(0,("sys_acl_get_file returned NULL: %s\n", strerror(errno
)));
619 PyErr_NTSTATUS_IS_ERR_RAISE(status
);
622 py_acl
= py_return_ndr_struct("samba.dcerpc.smb_acl", "t", acl
, acl
);
625 TALLOC_FREE(tmp_ctx
);
630 static PyMethodDef py_smbd_methods
[] = {
632 (PyCFunction
)py_smbd_have_posix_acls
, METH_NOARGS
,
635 (PyCFunction
)py_smbd_set_simple_acl
, METH_VARARGS
|METH_KEYWORDS
,
638 (PyCFunction
)py_smbd_set_nt_acl
, METH_VARARGS
|METH_KEYWORDS
,
641 (PyCFunction
)py_smbd_get_nt_acl
, METH_VARARGS
|METH_KEYWORDS
,
644 (PyCFunction
)py_smbd_get_sys_acl
, METH_VARARGS
|METH_KEYWORDS
,
647 (PyCFunction
)py_smbd_set_sys_acl
, METH_VARARGS
|METH_KEYWORDS
,
650 (PyCFunction
)py_smbd_chown
, METH_VARARGS
|METH_KEYWORDS
,
653 (PyCFunction
)py_smbd_unlink
, METH_VARARGS
|METH_KEYWORDS
,
663 m
= Py_InitModule3("smbd", py_smbd_methods
,
664 "Python bindings for the smbd file server.");