source/python/py_lsa.c

   1 /*
   2    Python wrappers for DCERPC/SMB client routines.
   3
   4    Copyright (C) Tim Potter, 2002
   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 2 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, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "python/py_lsa.h"
  22
  23 PyObject *new_lsa_policy_hnd_object(struct cli_state *cli, TALLOC_CTX *mem_ctx,
  24                                     POLICY_HND *pol)
  25 {
  26         lsa_policy_hnd_object *o;
  27
  28         o = PyObject_New(lsa_policy_hnd_object, &lsa_policy_hnd_type);
  29
  30         o->cli = cli;
  31         o->mem_ctx = mem_ctx;
  32         memcpy(&o->pol, pol, sizeof(POLICY_HND));
  33
  34         return (PyObject*)o;
  35 }
  36
  37 /*
  38  * Exceptions raised by this module
  39  */
  40
  41 PyObject *lsa_error;            /* This indicates a non-RPC related error
  42                                    such as name lookup failure */
  43
  44 PyObject *lsa_ntstatus;         /* This exception is raised when a RPC call
  45                                    returns a status code other than
  46                                    NT_STATUS_OK */
  47
  48 /*
  49  * Open/close lsa handles
  50  */
  51
  52 static PyObject *lsa_open_policy(PyObject *self, PyObject *args,
  53                                 PyObject *kw)
  54 {
  55         static char *kwlist[] = { "servername", "creds", "access", NULL };
  56         char *server, *errstr;
  57         PyObject *creds = NULL, *result = NULL;
  58         uint32 desired_access = MAXIMUM_ALLOWED_ACCESS;
  59         struct cli_state *cli = NULL;
  60         NTSTATUS ntstatus;
  61         TALLOC_CTX *mem_ctx = NULL;
  62         POLICY_HND hnd;
  63
  64         if (!PyArg_ParseTupleAndKeywords(
  65                     args, kw, "s|Oi", kwlist, &server, &creds, &desired_access))
  66                 return NULL;
  67
  68         if (creds && creds != Py_None && !PyDict_Check(creds)) {
  69                 PyErr_SetString(PyExc_TypeError,
  70                                 "credentials must be dictionary or None");
  71                 return NULL;
  72         }
  73
  74         if (server[0] != '\\' || server[1] != '\\') {
  75                 PyErr_SetString(PyExc_ValueError, "UNC name required");
  76                 return NULL;
  77         }
  78
  79         server += 2;
  80
  81         if (!(cli = open_pipe_creds(server, creds, PI_LSARPC, &errstr))) {
  82                 PyErr_SetString(lsa_error, errstr);
  83                 free(errstr);
  84                 return NULL;
  85         }
  86
  87         if (!(mem_ctx = talloc_init("lsa_open_policy"))) {
  88                 PyErr_SetString(lsa_error, "unable to init talloc context\n");
  89                 goto done;
  90         }
  91
  92         ntstatus = cli_lsa_open_policy(cli, mem_ctx, True,
  93                                        SEC_RIGHTS_MAXIMUM_ALLOWED, &hnd);
  94
  95         if (!NT_STATUS_IS_OK(ntstatus)) {
  96                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
  97                 goto done;
  98         }
  99
 100         result = new_lsa_policy_hnd_object(cli, mem_ctx, &hnd);
 101
 102 done:
 103         if (!result) {
 104                 if (cli)
 105                         cli_shutdown(cli);
 106
 107                 if (mem_ctx)
 108                         talloc_destroy(mem_ctx);
 109         }
 110
 111         return result;
 112 }
 113
 114 static PyObject *lsa_close(PyObject *self, PyObject *args, PyObject *kw)
 115 {
 116         PyObject *po;
 117         lsa_policy_hnd_object *hnd;
 118         NTSTATUS result;
 119
 120         /* Parse parameters */
 121
 122         if (!PyArg_ParseTuple(args, "O!", &lsa_policy_hnd_type, &po))
 123                 return NULL;
 124
 125         hnd = (lsa_policy_hnd_object *)po;
 126
 127         /* Call rpc function */
 128
 129         result = cli_lsa_close(hnd->cli, hnd->mem_ctx, &hnd->pol);
 130
 131         /* Cleanup samba stuff */
 132
 133         cli_shutdown(hnd->cli);
 134         talloc_destroy(hnd->mem_ctx);
 135
 136         /* Return value */
 137
 138         Py_INCREF(Py_None);
 139         return Py_None;
 140 }
 141
 142 static PyObject *lsa_lookup_names(PyObject *self, PyObject *args)
 143 {
 144         PyObject *py_names, *result;
 145         NTSTATUS ntstatus;
 146         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 147         int num_names, i;
 148         const char **names;
 149         DOM_SID *sids;
 150         uint32 *name_types;
 151
 152         if (!PyArg_ParseTuple(args, "O", &py_names))
 153                 return NULL;
 154
 155         if (!PyList_Check(py_names) && !PyString_Check(py_names)) {
 156                 PyErr_SetString(PyExc_TypeError, "must be list or string");
 157                 return NULL;
 158         }
 159
 160         if (PyList_Check(py_names)) {
 161
 162                 /* Convert list to char ** array */
 163
 164                 num_names = PyList_Size(py_names);
 165                 names = (const char **)talloc(
 166                         hnd->mem_ctx, num_names * sizeof(char *));
 167
 168                 for (i = 0; i < num_names; i++) {
 169                         PyObject *obj = PyList_GetItem(py_names, i);
 170
 171                         names[i] = talloc_strdup(hnd->mem_ctx, PyString_AsString(obj));
 172                 }
 173
 174         } else {
 175
 176                 /* Just a single element */
 177
 178                 num_names = 1;
 179                 names = (const char **)talloc(hnd->mem_ctx, sizeof(char *));
 180
 181                 names[0] = PyString_AsString(py_names);
 182         }
 183
 184         ntstatus = cli_lsa_lookup_names(hnd->cli, hnd->mem_ctx, &hnd->pol,
 185                                         num_names, names, &sids, &name_types);
 186
 187         if (!NT_STATUS_IS_OK(ntstatus) && NT_STATUS_V(ntstatus) != 0x107) {
 188                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 189                 return NULL;
 190         }
 191
 192         result = PyList_New(num_names);
 193
 194         for (i = 0; i < num_names; i++) {
 195                 PyObject *sid_obj, *obj;
 196
 197                 py_from_SID(&sid_obj, &sids[i]);
 198
 199                 obj = Py_BuildValue("(Oi)", sid_obj, name_types[i]);
 200
 201                 PyList_SetItem(result, i, obj);
 202         }
 203
 204         return result;
 205 }
 206
 207 static PyObject *lsa_lookup_sids(PyObject *self, PyObject *args,
 208                                  PyObject *kw)
 209 {
 210         PyObject *py_sids, *result;
 211         NTSTATUS ntstatus;
 212         int num_sids, i;
 213         char **domains, **names;
 214         uint32 *types;
 215         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 216         TALLOC_CTX *mem_ctx = NULL;
 217         DOM_SID *sids;
 218
 219         if (!PyArg_ParseTuple(args, "O", &py_sids))
 220                 return NULL;
 221
 222         if (!PyList_Check(py_sids) && !PyString_Check(py_sids)) {
 223                 PyErr_SetString(PyExc_TypeError, "must be list or string");
 224                 return NULL;
 225         }
 226
 227         if (!(mem_ctx = talloc_init("lsa_open_policy"))) {
 228                 PyErr_SetString(lsa_error, "unable to init talloc context\n");
 229                 goto done;
 230         }
 231
 232         if (PyList_Check(py_sids)) {
 233
 234                 /* Convert dictionary to char ** array */
 235
 236                 num_sids = PyList_Size(py_sids);
 237                 sids = (DOM_SID *)talloc(mem_ctx, num_sids * sizeof(DOM_SID));
 238
 239                 memset(sids, 0, num_sids * sizeof(DOM_SID));
 240
 241                 for (i = 0; i < num_sids; i++) {
 242                         PyObject *obj = PyList_GetItem(py_sids, i);
 243
 244                         if (!string_to_sid(&sids[i], PyString_AsString(obj))) {
 245                                 PyErr_SetString(PyExc_ValueError, "string_to_sid failed");
 246                                 result = NULL;
 247                                 goto done;
 248                         }
 249                 }
 250
 251         } else {
 252
 253                 /* Just a single element */
 254
 255                 num_sids = 1;
 256                 sids = (DOM_SID *)talloc(mem_ctx, sizeof(DOM_SID));
 257
 258                 if (!string_to_sid(&sids[0], PyString_AsString(py_sids))) {
 259                         PyErr_SetString(PyExc_ValueError, "string_to_sid failed");
 260                         result = NULL;
 261                         goto done;
 262                 }
 263         }
 264
 265         ntstatus = cli_lsa_lookup_sids(hnd->cli, mem_ctx, &hnd->pol,
 266                                        num_sids, sids, &domains, &names,
 267                                        &types);
 268
 269         if (!NT_STATUS_IS_OK(ntstatus)) {
 270                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 271                 result = NULL;
 272                 goto done;
 273         }
 274
 275         result = PyList_New(num_sids);
 276
 277         for (i = 0; i < num_sids; i++) {
 278                 PyObject *obj;
 279
 280                 obj = Py_BuildValue("{sssssi}", "username", names[i],
 281                                     "domain", domains[i], "name_type",
 282                                     types[i]);
 283
 284                 PyList_SetItem(result, i, obj);
 285         }
 286
 287  done:
 288         if (mem_ctx)
 289                 talloc_destroy(mem_ctx);
 290
 291         return result;
 292 }
 293
 294 static PyObject *lsa_enum_trust_dom(PyObject *self, PyObject *args)
 295 {
 296         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 297         NTSTATUS ntstatus;
 298         uint32 enum_ctx = 0, num_domains, i;
 299         char **domain_names;
 300         DOM_SID *domain_sids;
 301         PyObject *result;
 302
 303         if (!PyArg_ParseTuple(args, ""))
 304                 return NULL;
 305
 306         ntstatus = cli_lsa_enum_trust_dom(
 307                 hnd->cli, hnd->mem_ctx, &hnd->pol, &enum_ctx,
 308                 &num_domains, &domain_names, &domain_sids);
 309
 310         if (!NT_STATUS_IS_OK(ntstatus)) {
 311                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 312                 return NULL;
 313         }
 314
 315         result = PyList_New(num_domains);
 316
 317         for (i = 0; i < num_domains; i++) {
 318                 fstring sid_str;
 319
 320                 sid_to_string(sid_str, &domain_sids[i]);
 321                 PyList_SetItem(
 322                         result, i,
 323                         Py_BuildValue("(ss)", domain_names[i], sid_str));
 324         }
 325
 326         return result;
 327 }
 328
 329 /*
 330  * Method dispatch tables
 331  */
 332
 333 static PyMethodDef lsa_hnd_methods[] = {
 334
 335         /* SIDs<->names */
 336
 337         { "lookup_sids", (PyCFunction)lsa_lookup_sids,
 338           METH_VARARGS | METH_KEYWORDS,
 339           "Convert sids to names." },
 340
 341         { "lookup_names", (PyCFunction)lsa_lookup_names,
 342           METH_VARARGS | METH_KEYWORDS,
 343           "Convert names to sids." },
 344
 345         /* Trusted domains */
 346
 347         { "enum_trusted_domains", (PyCFunction)lsa_enum_trust_dom,
 348           METH_VARARGS,
 349           "Enumerate trusted domains." },
 350
 351         { NULL }
 352 };
 353
 354 static void py_lsa_policy_hnd_dealloc(PyObject* self)
 355 {
 356         PyObject_Del(self);
 357 }
 358
 359 static PyObject *py_lsa_policy_hnd_getattr(PyObject *self, char *attrname)
 360 {
 361         return Py_FindMethod(lsa_hnd_methods, self, attrname);
 362 }
 363
 364 PyTypeObject lsa_policy_hnd_type = {
 365         PyObject_HEAD_INIT(NULL)
 366         0,
 367         "LSA Policy Handle",
 368         sizeof(lsa_policy_hnd_object),
 369         0,
 370         py_lsa_policy_hnd_dealloc, /*tp_dealloc*/
 371         0,          /*tp_print*/
 372         py_lsa_policy_hnd_getattr,          /*tp_getattr*/
 373         0,          /*tp_setattr*/
 374         0,          /*tp_compare*/
 375         0,          /*tp_repr*/
 376         0,          /*tp_as_number*/
 377         0,          /*tp_as_sequence*/
 378         0,          /*tp_as_mapping*/
 379         0,          /*tp_hash */
 380 };
 381
 382 static PyMethodDef lsa_methods[] = {
 383
 384         /* Open/close lsa handles */
 385
 386         { "open_policy", (PyCFunction)lsa_open_policy,
 387           METH_VARARGS | METH_KEYWORDS,
 388           "Open a policy handle" },
 389
 390         { "close", (PyCFunction)lsa_close,
 391           METH_VARARGS,
 392           "Close a policy handle" },
 393
 394         /* Other stuff - this should really go into a samba config module
 395            but for the moment let's leave it here. */
 396
 397         { "setup_logging", (PyCFunction)py_setup_logging,
 398           METH_VARARGS | METH_KEYWORDS,
 399           "Set up debug logging.\n"
 400 "\n"
 401 "Initialises Samba's debug logging system.  One argument is expected which\n"
 402 "is a boolean specifying whether debugging is interactive and sent to stdout\n"
 403 "or logged to a file.\n"
 404 "\n"
 405 "Example:\n"
 406 "\n"
 407 ">>> spoolss.setup_logging(interactive = 1)" },
 408
 409         { "get_debuglevel", (PyCFunction)get_debuglevel,
 410           METH_VARARGS,
 411           "Set the current debug level.\n"
 412 "\n"
 413 "Example:\n"
 414 "\n"
 415 ">>> spoolss.get_debuglevel()\n"
 416 "0" },
 417
 418         { "set_debuglevel", (PyCFunction)set_debuglevel,
 419           METH_VARARGS,
 420           "Get the current debug level.\n"
 421 "\n"
 422 "Example:\n"
 423 "\n"
 424 ">>> spoolss.set_debuglevel(10)" },
 425
 426         { NULL }
 427 };
 428
 429 static struct const_vals {
 430         char *name;
 431         uint32 value;
 432 } module_const_vals[] = {
 433         { NULL }
 434 };
 435
 436 static void const_init(PyObject *dict)
 437 {
 438         struct const_vals *tmp;
 439         PyObject *obj;
 440
 441         for (tmp = module_const_vals; tmp->name; tmp++) {
 442                 obj = PyInt_FromLong(tmp->value);
 443                 PyDict_SetItemString(dict, tmp->name, obj);
 444                 Py_DECREF(obj);
 445         }
 446 }
 447
 448 /*
 449  * Module initialisation
 450  */
 451
 452 void initlsa(void)
 453 {
 454         PyObject *module, *dict;
 455
 456         /* Initialise module */
 457
 458         module = Py_InitModule("lsa", lsa_methods);
 459         dict = PyModule_GetDict(module);
 460
 461         lsa_error = PyErr_NewException("lsa.error", NULL, NULL);
 462         PyDict_SetItemString(dict, "error", lsa_error);
 463
 464         lsa_ntstatus = PyErr_NewException("lsa.ntstatus", NULL, NULL);
 465         PyDict_SetItemString(dict, "ntstatus", lsa_ntstatus);
 466
 467         /* Initialise policy handle object */
 468
 469         lsa_policy_hnd_type.ob_type = &PyType_Type;
 470
 471         /* Initialise constants */
 472
 473         const_init(dict);
 474
 475         /* Do samba initialisation */
 476
 477         py_samba_init();
 478
 479         setup_logging("lsa", True);
 480         DEBUGLEVEL = 10;
 481 }