source3/smbd/pysmbd.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB NT Security Descriptor / Unix permission conversion.
   4    Copyright (C) Jeremy Allison 1994-2009.
   5    Copyright (C) Andreas Gruenbacher 2002.
   6    Copyright (C) Simo Sorce <idra@samba.org> 2009.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "smbd/smbd.h"
  24 #include <Python.h>
  25 #include "libcli/util/pyerrors.h"
  26
  27 extern const struct generic_mapping file_generic_mapping;
  28
  29 #undef  DBGC_CLASS
  30 #define DBGC_CLASS DBGC_ACLS
  31
  32 static NTSTATUS set_sys_acl_no_snum(const char *fname,
  33                                      SMB_ACL_TYPE_T acltype,
  34                                      SMB_ACL_T theacl)
  35 {
  36         connection_struct *conn;
  37         NTSTATUS status = NT_STATUS_OK;
  38         int ret;
  39
  40         conn = talloc_zero(NULL, connection_struct);
  41         if (conn == NULL) {
  42                 DEBUG(0, ("talloc failed\n"));
  43                 return NT_STATUS_NO_MEMORY;
  44         }
  45
  46         if (!(conn->params = talloc(conn, struct share_params))) {
  47                 DEBUG(0,("get_nt_acl_no_snum: talloc() failed!\n"));
  48                 TALLOC_FREE(conn);
  49                 return NT_STATUS_NO_MEMORY;
  50         }
  51
  52         conn->params->service = -1;
  53
  54         set_conn_connectpath(conn, "/");
  55
  56         smbd_vfs_init(conn);
  57
  58         ret = SMB_VFS_SYS_ACL_SET_FILE( conn, fname, acltype, theacl);
  59         if (ret != 0) {
  60                 status = map_nt_error_from_unix_common(ret);
  61                 DEBUG(0,("get_nt_acl_no_snum: fset_nt_acl returned zero.\n"));
  62         }
  63
  64         conn_free(conn);
  65
  66         return status;
  67 }
  68
  69
  70 static SMB_ACL_T make_simple_acl(uid_t uid, gid_t gid)
  71 {
  72         mode_t mode = SMB_ACL_READ|SMB_ACL_WRITE;
  73         mode_t mode0 = 0;
  74
  75         SMB_ACL_ENTRY_T entry;
  76         SMB_ACL_T acl = sys_acl_init(4);
  77
  78         if (!acl) {
  79                 return NULL;
  80         }
  81
  82         if (sys_acl_create_entry(&acl, &entry) != 0) {
  83                 sys_acl_free_acl(acl);
  84                 return NULL;
  85         }
  86
  87         if (sys_acl_set_tag_type(entry, SMB_ACL_USER_OBJ) != 0) {
  88                 sys_acl_free_acl(acl);
  89                 return NULL;
  90         }
  91
  92         if (sys_acl_set_permset(entry, &mode) != 0) {
  93                 sys_acl_free_acl(acl);
  94                 return NULL;
  95         }
  96
  97         if (sys_acl_create_entry(&acl, &entry) != 0) {
  98                 sys_acl_free_acl(acl);
  99                 return NULL;
 100         }
 101
 102         if (sys_acl_set_tag_type(entry, SMB_ACL_GROUP_OBJ) != 0) {
 103                 sys_acl_free_acl(acl);
 104                 return NULL;
 105         }
 106
 107         if (sys_acl_set_permset(entry, &mode) != 0) {
 108                 sys_acl_free_acl(acl);
 109                 return NULL;
 110         }
 111
 112         if (sys_acl_create_entry(&acl, &entry) != 0) {
 113                 sys_acl_free_acl(acl);
 114                 return NULL;
 115         }
 116
 117         if (sys_acl_set_tag_type(entry, SMB_ACL_OTHER) != 0) {
 118                 sys_acl_free_acl(acl);
 119                 return NULL;
 120         }
 121
 122         if (sys_acl_set_permset(entry, &mode0) != 0) {
 123                 sys_acl_free_acl(acl);
 124                 return NULL;
 125         }
 126
 127         if (sys_acl_create_entry(&acl, &entry) != 0) {
 128                 sys_acl_free_acl(acl);
 129                 return NULL;
 130         }
 131
 132         if (sys_acl_set_tag_type(entry, SMB_ACL_GROUP) != 0) {
 133                 sys_acl_free_acl(acl);
 134                 return NULL;
 135         }
 136
 137         if (sys_acl_set_qualifier(entry, &gid) != 0) {
 138                 sys_acl_free_acl(acl);
 139                 return NULL;
 140         }
 141
 142         if (sys_acl_set_permset(entry, &mode) != 0) {
 143                 sys_acl_free_acl(acl);
 144                 return NULL;
 145         }
 146
 147         if (sys_acl_create_entry(&acl, &entry) != 0) {
 148                 sys_acl_free_acl(acl);
 149                 return NULL;
 150         }
 151
 152         if (sys_acl_set_tag_type(entry, SMB_ACL_MASK) != 0) {
 153                 sys_acl_free_acl(acl);
 154                 return NULL;
 155         }
 156
 157         if (sys_acl_set_permset(entry, &mode0) != 0) {
 158                 sys_acl_free_acl(acl);
 159                 return NULL;
 160         }
 161         return acl;
 162 }
 163
 164 /*
 165   set a simple ACL on a file, as a test
 166  */
 167 static PyObject *py_smbd_set_simple_acl(PyObject *self, PyObject *args)
 168 {
 169         NTSTATUS status;
 170         char *fname;
 171         int uid, gid;
 172         SMB_ACL_T acl;
 173
 174         if (!PyArg_ParseTuple(args, "sii", &fname, &uid, &gid))
 175                 return NULL;
 176
 177         acl = make_simple_acl(uid, gid);
 178
 179         status = set_sys_acl_no_snum(fname, SMB_ACL_TYPE_ACCESS, acl);
 180         sys_acl_free_acl(acl);
 181         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 182
 183         Py_RETURN_NONE;
 184 }
 185
 186 static PyMethodDef py_smbd_methods[] = {
 187         { "set_simple_acl",
 188                 (PyCFunction)py_smbd_set_simple_acl, METH_VARARGS,
 189                 NULL },
 190         { NULL }
 191 };
 192
 193 void initsmbd(void);
 194 void initsmbd(void)
 195 {
 196         PyObject *m;
 197
 198         m = Py_InitModule3("smbd", py_smbd_methods,
 199                            "Python bindings for the smbd file server.");
 200         if (m == NULL)
 201                 return;
 202
 203 }