source4/librpc/ndr/py_security.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4
   5    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2010
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20 #include <Python.h>
  21 #include "libcli/security/security.h"
  22
  23 static void PyType_AddMethods(PyTypeObject *type, PyMethodDef *methods)
  24 {
  25         PyObject *dict;
  26         int i;
  27         if (type->tp_dict == NULL)
  28                 type->tp_dict = PyDict_New();
  29         dict = type->tp_dict;
  30         for (i = 0; methods[i].ml_name; i++) {
  31                 PyObject *descr;
  32                 if (methods[i].ml_flags & METH_CLASS)
  33                         descr = PyCFunction_New(&methods[i], (PyObject *)type);
  34                 else
  35                         descr = PyDescr_NewMethod(type, &methods[i]);
  36                 PyDict_SetItemString(dict, methods[i].ml_name,
  37                                      descr);
  38         }
  39 }
  40
  41 static PyObject *py_dom_sid_split(PyObject *py_self, PyObject *args)
  42 {
  43         struct dom_sid *self = pytalloc_get_ptr(py_self);
  44         struct dom_sid *domain_sid;
  45         TALLOC_CTX *mem_ctx;
  46         uint32_t rid;
  47         NTSTATUS status;
  48         PyObject *py_domain_sid;
  49
  50         mem_ctx = talloc_new(NULL);
  51         if (mem_ctx == NULL) {
  52                 PyErr_NoMemory();
  53                 return NULL;
  54         }
  55
  56         status = dom_sid_split_rid(mem_ctx, self, &domain_sid, &rid);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 PyErr_SetString(PyExc_RuntimeError, "dom_sid_split_rid failed");
  59                 talloc_free(mem_ctx);
  60                 return NULL;
  61         }
  62
  63         py_domain_sid = pytalloc_steal(&dom_sid_Type, domain_sid);
  64         talloc_free(mem_ctx);
  65         return Py_BuildValue("(OI)", py_domain_sid, rid);
  66 }
  67
  68 static int py_dom_sid_cmp(PyObject *py_self, PyObject *py_other)
  69 {
  70         struct dom_sid *self = pytalloc_get_ptr(py_self), *other;
  71         int val;
  72
  73         other = pytalloc_get_ptr(py_other);
  74         if (other == NULL)
  75                 return -1;
  76
  77         val =  dom_sid_compare(self, other);
  78         if (val > 0) {
  79                 return 1;
  80         } else if (val < 0) {
  81                 return -1;
  82         }
  83         return 0;
  84 }
  85
  86 static PyObject *py_dom_sid_str(PyObject *py_self)
  87 {
  88         struct dom_sid *self = pytalloc_get_ptr(py_self);
  89         char *str = dom_sid_string(NULL, self);
  90         PyObject *ret = PyString_FromString(str);
  91         talloc_free(str);
  92         return ret;
  93 }
  94
  95 static PyObject *py_dom_sid_repr(PyObject *py_self)
  96 {
  97         struct dom_sid *self = pytalloc_get_ptr(py_self);
  98         char *str = dom_sid_string(NULL, self);
  99         PyObject *ret = PyString_FromFormat("dom_sid('%s')", str);
 100         talloc_free(str);
 101         return ret;
 102 }
 103
 104 static int py_dom_sid_init(PyObject *self, PyObject *args, PyObject *kwargs)
 105 {
 106         char *str = NULL;
 107         struct dom_sid *sid = pytalloc_get_ptr(self);
 108         const char *kwnames[] = { "str", NULL };
 109
 110         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", discard_const_p(char *, kwnames), &str))
 111                 return -1;
 112
 113         if (str != NULL && !dom_sid_parse(str, sid)) {
 114                 PyErr_SetString(PyExc_TypeError, "Unable to parse string");
 115                 return -1;
 116         }
 117
 118         return 0;
 119 }
 120
 121 static PyMethodDef py_dom_sid_extra_methods[] = {
 122         { "split", (PyCFunction)py_dom_sid_split, METH_NOARGS,
 123                 "S.split() -> (domain_sid, rid)\n"
 124                 "Split a domain sid" },
 125         { NULL }
 126 };
 127
 128
 129 static void py_dom_sid_patch(PyTypeObject *type)
 130 {
 131         type->tp_init = py_dom_sid_init;
 132         type->tp_str = py_dom_sid_str;
 133         type->tp_repr = py_dom_sid_repr;
 134         type->tp_compare = py_dom_sid_cmp;
 135         PyType_AddMethods(type, py_dom_sid_extra_methods);
 136 }
 137
 138 #define PY_DOM_SID_PATCH py_dom_sid_patch
 139
 140 static PyObject *py_descriptor_sacl_add(PyObject *self, PyObject *args)
 141 {
 142         struct security_descriptor *desc = pytalloc_get_ptr(self);
 143         NTSTATUS status;
 144         struct security_ace *ace;
 145         PyObject *py_ace;
 146
 147         if (!PyArg_ParseTuple(args, "O", &py_ace))
 148                 return NULL;
 149
 150         ace = pytalloc_get_ptr(py_ace);
 151         status = security_descriptor_sacl_add(desc, ace);
 152         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 153         Py_RETURN_NONE;
 154 }
 155
 156 static PyObject *py_descriptor_dacl_add(PyObject *self, PyObject *args)
 157 {
 158         struct security_descriptor *desc = pytalloc_get_ptr(self);
 159         NTSTATUS status;
 160         struct security_ace *ace;
 161         PyObject *py_ace;
 162
 163         if (!PyArg_ParseTuple(args, "O", &py_ace))
 164                 return NULL;
 165
 166         ace = pytalloc_get_ptr(py_ace);
 167
 168         status = security_descriptor_dacl_add(desc, ace);
 169         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 170         Py_RETURN_NONE;
 171 }
 172
 173 static PyObject *py_descriptor_dacl_del(PyObject *self, PyObject *args)
 174 {
 175         struct security_descriptor *desc = pytalloc_get_ptr(self);
 176         NTSTATUS status;
 177         struct dom_sid *sid;
 178         PyObject *py_sid;
 179
 180         if (!PyArg_ParseTuple(args, "O", &py_sid))
 181                 return NULL;
 182
 183         sid = pytalloc_get_ptr(py_sid);
 184         status = security_descriptor_dacl_del(desc, sid);
 185         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 186         Py_RETURN_NONE;
 187 }
 188
 189 static PyObject *py_descriptor_sacl_del(PyObject *self, PyObject *args)
 190 {
 191         struct security_descriptor *desc = pytalloc_get_ptr(self);
 192         NTSTATUS status;
 193         struct dom_sid *sid;
 194         PyObject *py_sid;
 195
 196         if (!PyArg_ParseTuple(args, "O", &py_sid))
 197                 return NULL;
 198
 199         sid = pytalloc_get_ptr(py_sid);
 200         status = security_descriptor_sacl_del(desc, sid);
 201         PyErr_NTSTATUS_IS_ERR_RAISE(status);
 202         Py_RETURN_NONE;
 203 }
 204
 205 static PyObject *py_descriptor_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)
 206 {
 207         return pytalloc_steal(self, security_descriptor_initialise(NULL));
 208 }
 209
 210 static PyObject *py_descriptor_from_sddl(PyObject *self, PyObject *args)
 211 {
 212         struct security_descriptor *secdesc;
 213         char *sddl;
 214         PyObject *py_sid;
 215         struct dom_sid *sid;
 216
 217         if (!PyArg_ParseTuple(args, "sO!", &sddl, &dom_sid_Type, &py_sid))
 218                 return NULL;
 219
 220         sid = pytalloc_get_ptr(py_sid);
 221
 222         secdesc = sddl_decode(NULL, sddl, sid);
 223         if (secdesc == NULL) {
 224                 PyErr_SetString(PyExc_TypeError, "Unable to parse SDDL");
 225                 return NULL;
 226         }
 227
 228         return pytalloc_steal((PyTypeObject *)self, secdesc);
 229 }
 230
 231 static PyObject *py_descriptor_as_sddl(PyObject *self, PyObject *args)
 232 {
 233         struct dom_sid *sid;
 234         PyObject *py_sid = Py_None;
 235         struct security_descriptor *desc = pytalloc_get_ptr(self);
 236         char *text;
 237         PyObject *ret;
 238
 239         if (!PyArg_ParseTuple(args, "|O!", &dom_sid_Type, &py_sid))
 240                 return NULL;
 241
 242         if (py_sid != Py_None)
 243                 sid = pytalloc_get_ptr(py_sid);
 244         else
 245                 sid = NULL;
 246
 247         text = sddl_encode(NULL, desc, sid);
 248
 249         ret = PyString_FromString(text);
 250
 251         talloc_free(text);
 252
 253         return ret;
 254 }
 255
 256 static PyMethodDef py_descriptor_extra_methods[] = {
 257         { "sacl_add", (PyCFunction)py_descriptor_sacl_add, METH_VARARGS,
 258                 "S.sacl_add(ace) -> None\n"
 259                 "Add a security ace to this security descriptor" },
 260         { "dacl_add", (PyCFunction)py_descriptor_dacl_add, METH_VARARGS,
 261                 NULL },
 262         { "dacl_del", (PyCFunction)py_descriptor_dacl_del, METH_VARARGS,
 263                 NULL },
 264         { "sacl_del", (PyCFunction)py_descriptor_sacl_del, METH_VARARGS,
 265                 NULL },
 266         { "from_sddl", (PyCFunction)py_descriptor_from_sddl, METH_VARARGS|METH_CLASS,
 267                 NULL },
 268         { "as_sddl", (PyCFunction)py_descriptor_as_sddl, METH_VARARGS,
 269                 NULL },
 270         { NULL }
 271 };
 272
 273 static void py_descriptor_patch(PyTypeObject *type)
 274 {
 275         type->tp_new = py_descriptor_new;
 276         PyType_AddMethods(type, py_descriptor_extra_methods);
 277 }
 278
 279 #define PY_DESCRIPTOR_PATCH py_descriptor_patch
 280
 281 static PyObject *py_token_is_sid(PyObject *self, PyObject *args)
 282 {
 283         PyObject *py_sid;
 284         struct dom_sid *sid;
 285         struct security_token *token = pytalloc_get_ptr(self);
 286         if (!PyArg_ParseTuple(args, "O", &py_sid))
 287                 return NULL;
 288
 289         sid = pytalloc_get_ptr(py_sid);
 290
 291         return PyBool_FromLong(security_token_is_sid(token, sid));
 292 }
 293
 294 static PyObject *py_token_has_sid(PyObject *self, PyObject *args)
 295 {
 296         PyObject *py_sid;
 297         struct dom_sid *sid;
 298         struct security_token *token = pytalloc_get_ptr(self);
 299         if (!PyArg_ParseTuple(args, "O", &py_sid))
 300                 return NULL;
 301
 302         sid = pytalloc_get_ptr(py_sid);
 303
 304         return PyBool_FromLong(security_token_has_sid(token, sid));
 305 }
 306
 307 static PyObject *py_token_is_anonymous(PyObject *self)
 308 {
 309         struct security_token *token = pytalloc_get_ptr(self);
 310
 311         return PyBool_FromLong(security_token_is_anonymous(token));
 312 }
 313
 314 static PyObject *py_token_is_system(PyObject *self)
 315 {
 316         struct security_token *token = pytalloc_get_ptr(self);
 317
 318         return PyBool_FromLong(security_token_is_system(token));
 319 }
 320
 321 static PyObject *py_token_has_builtin_administrators(PyObject *self)
 322 {
 323         struct security_token *token = pytalloc_get_ptr(self);
 324
 325         return PyBool_FromLong(security_token_has_builtin_administrators(token));
 326 }
 327
 328 static PyObject *py_token_has_nt_authenticated_users(PyObject *self)
 329 {
 330         struct security_token *token = pytalloc_get_ptr(self);
 331
 332         return PyBool_FromLong(security_token_has_nt_authenticated_users(token));
 333 }
 334
 335 static PyObject *py_token_has_privilege(PyObject *self, PyObject *args)
 336 {
 337         int priv;
 338         struct security_token *token = pytalloc_get_ptr(self);
 339
 340         if (!PyArg_ParseTuple(args, "i", &priv))
 341                 return NULL;
 342
 343         return PyBool_FromLong(security_token_has_privilege(token, priv));
 344 }
 345
 346 static PyObject *py_token_set_privilege(PyObject *self, PyObject *args)
 347 {
 348         int priv;
 349         struct security_token *token = pytalloc_get_ptr(self);
 350
 351         if (!PyArg_ParseTuple(args, "i", &priv))
 352                 return NULL;
 353
 354         security_token_set_privilege(token, priv);
 355         Py_RETURN_NONE;
 356 }
 357
 358 static PyObject *py_token_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)
 359 {
 360         return pytalloc_steal(self, security_token_initialise(NULL));
 361 }
 362
 363 static PyMethodDef py_token_extra_methods[] = {
 364         { "is_sid", (PyCFunction)py_token_is_sid, METH_VARARGS,
 365                 "S.is_sid(sid) -> bool\n"
 366                 "Check whether this token is of the specified SID." },
 367         { "has_sid", (PyCFunction)py_token_has_sid, METH_VARARGS,
 368                 NULL },
 369         { "is_anonymous", (PyCFunction)py_token_is_anonymous, METH_NOARGS,
 370                 "S.is_anonymus() -> bool\n"
 371                 "Check whether this is an anonymous token." },
 372         { "is_system", (PyCFunction)py_token_is_system, METH_NOARGS,
 373                 NULL },
 374         { "has_builtin_administrators", (PyCFunction)py_token_has_builtin_administrators, METH_NOARGS,
 375                 NULL },
 376         { "has_nt_authenticated_users", (PyCFunction)py_token_has_nt_authenticated_users, METH_NOARGS,
 377                 NULL },
 378         { "has_privilege", (PyCFunction)py_token_has_privilege, METH_VARARGS,
 379                 NULL },
 380         { "set_privilege", (PyCFunction)py_token_set_privilege, METH_VARARGS,
 381                 NULL },
 382         { NULL }
 383 };
 384
 385 #define PY_TOKEN_PATCH py_token_patch
 386 static void py_token_patch(PyTypeObject *type)
 387 {
 388         type->tp_new = py_token_new;
 389         PyType_AddMethods(type, py_token_extra_methods);
 390 }
 391
 392 static PyObject *py_privilege_name(PyObject *self, PyObject *args)
 393 {
 394         int priv;
 395         if (!PyArg_ParseTuple(args, "i", &priv))
 396                 return NULL;
 397
 398         return PyString_FromString(sec_privilege_name(priv));
 399 }
 400
 401 static PyObject *py_privilege_id(PyObject *self, PyObject *args)
 402 {
 403         char *name;
 404
 405         if (!PyArg_ParseTuple(args, "s", &name))
 406                 return NULL;
 407
 408         return PyInt_FromLong(sec_privilege_id(name));
 409 }
 410
 411 static PyObject *py_random_sid(PyObject *self)
 412 {
 413         struct dom_sid *sid;
 414         PyObject *ret;
 415         char *str = talloc_asprintf(NULL, "S-1-5-21-%u-%u-%u",
 416                         (unsigned)generate_random(),
 417                         (unsigned)generate_random(),
 418                         (unsigned)generate_random());
 419
 420         sid = dom_sid_parse_talloc(NULL, str);
 421         talloc_free(str);
 422         ret = pytalloc_steal(&dom_sid_Type, sid);
 423         return ret;
 424 }
 425
 426 static PyMethodDef py_mod_security_extra_methods[] = {
 427         { "random_sid", (PyCFunction)py_random_sid, METH_NOARGS, NULL },
 428         { "privilege_id", (PyCFunction)py_privilege_id, METH_VARARGS, NULL },
 429         { "privilege_name", (PyCFunction)py_privilege_name, METH_VARARGS, NULL },
 430         { NULL }
 431 };
 432
 433 static void py_mod_security_patch(PyObject *m)
 434 {
 435         int i;
 436         for (i = 0; py_mod_security_extra_methods[i].ml_name; i++) {
 437                 PyObject *descr = PyCFunction_New(&py_mod_security_extra_methods[i], NULL);
 438                 PyModule_AddObject(m, py_mod_security_extra_methods[i].ml_name,
 439                                    descr);
 440         }
 441 }
 442
 443 #define PY_MOD_SECURITY_PATCH py_mod_security_patch