source4/librpc/ndr/py_security.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 #include <Python.h>
  20 #include "libcli/security/security.h"
  21
  22 #ifndef Py_RETURN_NONE
  23 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
  24 #endif
  25
  26 static void PyType_AddMethods(PyTypeObject *type, PyMethodDef *methods)
  27 {
  28         PyObject *dict;
  29         int i;
  30         if (type->tp_dict == NULL)
  31                 type->tp_dict = PyDict_New();
  32         dict = type->tp_dict;
  33         for (i = 0; methods[i].ml_name; i++) {
  34                 PyObject *descr;
  35                 if (methods[i].ml_flags & METH_CLASS)
  36                         descr = PyCFunction_New(&methods[i], (PyObject *)type);
  37                 else
  38                         descr = PyDescr_NewMethod(type, &methods[i]);
  39                 PyDict_SetItemString(dict, methods[i].ml_name,
  40                                      descr);
  41         }
  42 }
  43
  44 static PyObject *py_dom_sid_split(PyObject *py_self, PyObject *args)
  45 {
  46         struct dom_sid *self = py_talloc_get_ptr(py_self);
  47         struct dom_sid *domain_sid;
  48         TALLOC_CTX *mem_ctx;
  49         uint32_t rid;
  50         NTSTATUS status;
  51         PyObject *py_domain_sid;
  52
  53         mem_ctx = talloc_new(NULL);
  54         if (mem_ctx == NULL) {
  55                 PyErr_NoMemory();
  56                 return NULL;
  57         }
  58
  59         status = dom_sid_split_rid(mem_ctx, self, &domain_sid, &rid);
  60         if (!NT_STATUS_IS_OK(status)) {
  61                 PyErr_SetString(PyExc_RuntimeError, "dom_sid_split_rid failed");
  62                 talloc_free(mem_ctx);
  63                 return NULL;
  64         }
  65
  66         py_domain_sid = py_talloc_steal(&dom_sid_Type, domain_sid);
  67         talloc_free(mem_ctx);
  68         return Py_BuildValue("(OI)", py_domain_sid, rid);
  69 }
  70
  71 static int py_dom_sid_cmp(PyObject *py_self, PyObject *py_other)
  72 {
  73         struct dom_sid *self = py_talloc_get_ptr(py_self), *other;
  74         other = py_talloc_get_ptr(py_other);
  75         if (other == NULL)
  76                 return -1;
  77
  78         return dom_sid_compare(self, other);
  79 }
  80
  81 static PyObject *py_dom_sid_str(PyObject *py_self)
  82 {
  83         struct dom_sid *self = py_talloc_get_ptr(py_self);
  84         char *str = dom_sid_string(NULL, self);
  85         PyObject *ret = PyString_FromString(str);
  86         talloc_free(str);
  87         return ret;
  88 }
  89
  90 static PyObject *py_dom_sid_repr(PyObject *py_self)
  91 {
  92         struct dom_sid *self = py_talloc_get_ptr(py_self);
  93         char *str = dom_sid_string(NULL, self);
  94         PyObject *ret = PyString_FromFormat("dom_sid('%s')", str);
  95         talloc_free(str);
  96         return ret;
  97 }
  98
  99 static int py_dom_sid_init(PyObject *self, PyObject *args, PyObject *kwargs)
 100 {
 101         char *str = NULL;
 102         struct dom_sid *sid = py_talloc_get_ptr(self);
 103         const char *kwnames[] = { "str", NULL };
 104
 105         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", discard_const_p(char *, kwnames), &str))
 106                 return -1;
 107
 108         if (str != NULL && !dom_sid_parse(str, sid)) {
 109                 PyErr_SetString(PyExc_TypeError, "Unable to parse string");
 110                 return -1;
 111         }
 112
 113         return 0;
 114 }
 115
 116 static PyMethodDef py_dom_sid_extra_methods[] = {
 117         { "split", (PyCFunction)py_dom_sid_split, METH_NOARGS,
 118                 "S.split() -> (domain_sid, rid)\n"
 119                 "Split a domain sid" },
 120         { NULL }
 121 };
 122
 123
 124 static void py_dom_sid_patch(PyTypeObject *type)
 125 {
 126         type->tp_init = py_dom_sid_init;
 127         type->tp_str = py_dom_sid_str;
 128         type->tp_repr = py_dom_sid_repr;
 129         type->tp_compare = py_dom_sid_cmp;
 130         PyType_AddMethods(type, py_dom_sid_extra_methods);
 131 }
 132
 133 #define PY_DOM_SID_PATCH py_dom_sid_patch
 134
 135 static PyObject *py_descriptor_sacl_add(PyObject *self, PyObject *args)
 136 {
 137         struct security_descriptor *desc = py_talloc_get_ptr(self);
 138         NTSTATUS status;
 139         struct security_ace *ace;
 140         PyObject *py_ace;
 141
 142         if (!PyArg_ParseTuple(args, "O", &py_ace))
 143                 return NULL;
 144
 145         ace = py_talloc_get_ptr(py_ace);
 146         status = security_descriptor_sacl_add(desc, ace);
 147         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 148         Py_RETURN_NONE;
 149 }
 150
 151 static PyObject *py_descriptor_dacl_add(PyObject *self, PyObject *args)
 152 {
 153         struct security_descriptor *desc = py_talloc_get_ptr(self);
 154         NTSTATUS status;
 155         struct security_ace *ace;
 156         PyObject *py_ace;
 157
 158         if (!PyArg_ParseTuple(args, "O", &py_ace))
 159                 return NULL;
 160
 161         ace = py_talloc_get_ptr(py_ace);
 162
 163         status = security_descriptor_dacl_add(desc, ace);
 164         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 165         Py_RETURN_NONE;
 166 }
 167
 168 static PyObject *py_descriptor_dacl_del(PyObject *self, PyObject *args)
 169 {
 170         struct security_descriptor *desc = py_talloc_get_ptr(self);
 171         NTSTATUS status;
 172         struct dom_sid *sid;
 173         PyObject *py_sid;
 174
 175         if (!PyArg_ParseTuple(args, "O", &py_sid))
 176                 return NULL;
 177
 178         sid = py_talloc_get_ptr(py_sid);
 179         status = security_descriptor_dacl_del(desc, sid);
 180         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 181         Py_RETURN_NONE;
 182 }
 183
 184 static PyObject *py_descriptor_sacl_del(PyObject *self, PyObject *args)
 185 {
 186         struct security_descriptor *desc = py_talloc_get_ptr(self);
 187         NTSTATUS status;
 188         struct dom_sid *sid;
 189         PyObject *py_sid;
 190
 191         if (!PyArg_ParseTuple(args, "O", &py_sid))
 192                 return NULL;
 193
 194         sid = py_talloc_get_ptr(py_sid);
 195         status = security_descriptor_sacl_del(desc, sid);
 196         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 197         Py_RETURN_NONE;
 198 }
 199
 200 static PyObject *py_descriptor_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)
 201 {
 202         return py_talloc_steal(self, security_descriptor_initialise(NULL));
 203 }
 204
 205 static PyObject *py_descriptor_from_sddl(PyObject *self, PyObject *args)
 206 {
 207         struct security_descriptor *secdesc;
 208         char *sddl;
 209         PyObject *py_sid;
 210         struct dom_sid *sid;
 211
 212         if (!PyArg_ParseTuple(args, "sO!", &sddl, &dom_sid_Type, &py_sid))
 213                 return NULL;
 214
 215         sid = py_talloc_get_ptr(py_sid);
 216
 217         secdesc = sddl_decode(NULL, sddl, sid);
 218         if (secdesc == NULL) {
 219                 PyErr_SetString(PyExc_TypeError, "Unable to parse SDDL");
 220                 return NULL;
 221         }
 222
 223         return py_talloc_steal((PyTypeObject *)self, secdesc);
 224 }
 225
 226 static PyObject *py_descriptor_as_sddl(PyObject *self, PyObject *args)
 227 {
 228         struct dom_sid *sid;
 229         PyObject *py_sid = Py_None;
 230         struct security_descriptor *desc = py_talloc_get_ptr(self);
 231         char *text;
 232         PyObject *ret;
 233
 234         if (!PyArg_ParseTuple(args, "|O!", &dom_sid_Type, &py_sid))
 235                 return NULL;
 236
 237         if (py_sid != Py_None)
 238                 sid = py_talloc_get_ptr(py_sid);
 239         else
 240                 sid = NULL;
 241
 242         text = sddl_encode(NULL, desc, sid);
 243
 244         ret = PyString_FromString(text);
 245
 246         talloc_free(text);
 247
 248         return ret;
 249 }
 250
 251 static PyMethodDef py_descriptor_extra_methods[] = {
 252         { "sacl_add", (PyCFunction)py_descriptor_sacl_add, METH_VARARGS,
 253                 "S.sacl_add(ace) -> None\n"
 254                 "Add a security ace to this security descriptor" },
 255         { "dacl_add", (PyCFunction)py_descriptor_dacl_add, METH_VARARGS,
 256                 NULL },
 257         { "dacl_del", (PyCFunction)py_descriptor_dacl_del, METH_VARARGS,
 258                 NULL },
 259         { "sacl_del", (PyCFunction)py_descriptor_sacl_del, METH_VARARGS,
 260                 NULL },
 261         { "from_sddl", (PyCFunction)py_descriptor_from_sddl, METH_VARARGS|METH_CLASS,
 262                 NULL },
 263         { "as_sddl", (PyCFunction)py_descriptor_as_sddl, METH_VARARGS,
 264                 NULL },
 265         { NULL }
 266 };
 267
 268 static void py_descriptor_patch(PyTypeObject *type)
 269 {
 270         type->tp_new = py_descriptor_new;
 271         PyType_AddMethods(type, py_descriptor_extra_methods);
 272 }
 273
 274 #define PY_DESCRIPTOR_PATCH py_descriptor_patch
 275
 276 static PyObject *py_token_is_sid(PyObject *self, PyObject *args)
 277 {
 278         PyObject *py_sid;
 279         struct dom_sid *sid;
 280         struct security_token *token = py_talloc_get_ptr(self);
 281         if (!PyArg_ParseTuple(args, "O", &py_sid))
 282                 return NULL;
 283
 284         sid = py_talloc_get_ptr(py_sid);
 285
 286         return PyBool_FromLong(security_token_is_sid(token, sid));
 287 }
 288
 289 static PyObject *py_token_has_sid(PyObject *self, PyObject *args)
 290 {
 291         PyObject *py_sid;
 292         struct dom_sid *sid;
 293         struct security_token *token = py_talloc_get_ptr(self);
 294         if (!PyArg_ParseTuple(args, "O", &py_sid))
 295                 return NULL;
 296
 297         sid = py_talloc_get_ptr(py_sid);
 298
 299         return PyBool_FromLong(security_token_has_sid(token, sid));
 300 }
 301
 302 static PyObject *py_token_is_anonymous(PyObject *self)
 303 {
 304         struct security_token *token = py_talloc_get_ptr(self);
 305
 306         return PyBool_FromLong(security_token_is_anonymous(token));
 307 }
 308
 309 static PyObject *py_token_is_system(PyObject *self)
 310 {
 311         struct security_token *token = py_talloc_get_ptr(self);
 312
 313         return PyBool_FromLong(security_token_is_system(token));
 314 }
 315
 316 static PyObject *py_token_has_builtin_administrators(PyObject *self)
 317 {
 318         struct security_token *token = py_talloc_get_ptr(self);
 319
 320         return PyBool_FromLong(security_token_has_builtin_administrators(token));
 321 }
 322
 323 static PyObject *py_token_has_nt_authenticated_users(PyObject *self)
 324 {
 325         struct security_token *token = py_talloc_get_ptr(self);
 326
 327         return PyBool_FromLong(security_token_has_nt_authenticated_users(token));
 328 }
 329
 330 static PyObject *py_token_has_privilege(PyObject *self, PyObject *args)
 331 {
 332         int priv;
 333         struct security_token *token = py_talloc_get_ptr(self);
 334
 335         if (!PyArg_ParseTuple(args, "i", &priv))
 336                 return NULL;
 337
 338         return PyBool_FromLong(security_token_has_privilege(token, priv));
 339 }
 340
 341 static PyObject *py_token_set_privilege(PyObject *self, PyObject *args)
 342 {
 343         int priv;
 344         struct security_token *token = py_talloc_get_ptr(self);
 345
 346         if (!PyArg_ParseTuple(args, "i", &priv))
 347                 return NULL;
 348
 349         security_token_set_privilege(token, priv);
 350         Py_RETURN_NONE;
 351 }
 352
 353 static PyObject *py_token_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)
 354 {
 355         return py_talloc_steal(self, security_token_initialise(NULL));
 356 }
 357
 358 static PyMethodDef py_token_extra_methods[] = {
 359         { "is_sid", (PyCFunction)py_token_is_sid, METH_VARARGS,
 360                 "S.is_sid(sid) -> bool\n"
 361                 "Check whether this token is of the specified SID." },
 362         { "has_sid", (PyCFunction)py_token_has_sid, METH_VARARGS,
 363                 NULL },
 364         { "is_anonymous", (PyCFunction)py_token_is_anonymous, METH_NOARGS,
 365                 "S.is_anonymus() -> bool\n"
 366                 "Check whether this is an anonymous token." },
 367         { "is_system", (PyCFunction)py_token_is_system, METH_NOARGS,
 368                 NULL },
 369         { "has_builtin_administrators", (PyCFunction)py_token_has_builtin_administrators, METH_NOARGS,
 370                 NULL },
 371         { "has_nt_authenticated_users", (PyCFunction)py_token_has_nt_authenticated_users, METH_NOARGS,
 372                 NULL },
 373         { "has_privilege", (PyCFunction)py_token_has_privilege, METH_VARARGS,
 374                 NULL },
 375         { "set_privilege", (PyCFunction)py_token_set_privilege, METH_VARARGS,
 376                 NULL },
 377         { NULL }
 378 };
 379
 380 #define PY_TOKEN_PATCH py_token_patch
 381 static void py_token_patch(PyTypeObject *type)
 382 {
 383         type->tp_new = py_token_new;
 384         PyType_AddMethods(type, py_token_extra_methods);
 385 }
 386
 387 static PyObject *py_privilege_name(PyObject *self, PyObject *args)
 388 {
 389         int priv;
 390         if (!PyArg_ParseTuple(args, "i", &priv))
 391                 return NULL;
 392
 393         return PyString_FromString(sec_privilege_name(priv));
 394 }
 395
 396 static PyObject *py_privilege_id(PyObject *self, PyObject *args)
 397 {
 398         char *name;
 399
 400         if (!PyArg_ParseTuple(args, "s", &name))
 401                 return NULL;
 402
 403         return PyInt_FromLong(sec_privilege_id(name));
 404 }
 405
 406 static PyObject *py_random_sid(PyObject *self)
 407 {
 408         struct dom_sid *sid;
 409         PyObject *ret;
 410         char *str = talloc_asprintf(NULL, "S-1-5-21-%u-%u-%u",
 411                         (unsigned)generate_random(),
 412                         (unsigned)generate_random(),
 413                         (unsigned)generate_random());
 414
 415         sid = dom_sid_parse_talloc(NULL, str);
 416         talloc_free(str);
 417         ret = py_talloc_steal(&dom_sid_Type, sid);
 418         return ret;
 419 }
 420
 421 static PyMethodDef py_mod_security_extra_methods[] = {
 422         { "random_sid", (PyCFunction)py_random_sid, METH_NOARGS, NULL },
 423         { "privilege_id", (PyCFunction)py_privilege_id, METH_VARARGS, NULL },
 424         { "privilege_name", (PyCFunction)py_privilege_name, METH_VARARGS, NULL },
 425         { NULL }
 426 };
 427
 428 static void py_mod_security_patch(PyObject *m)
 429 {
 430         int i;
 431         for (i = 0; py_mod_security_extra_methods[i].ml_name; i++) {
 432                 PyObject *descr = PyCFunction_New(&py_mod_security_extra_methods[i], NULL);
 433                 PyModule_AddObject(m, py_mod_security_extra_methods[i].ml_name,
 434                                    descr);
 435         }
 436 }
 437
 438 #define PY_MOD_SECURITY_PATCH py_mod_security_patch