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 = GENERIC_EXECUTE_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                                        desired_access, &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                 talloc_destroy(mem_ctx);
 108         }
 109
 110         return result;
 111 }
 112
 113 static PyObject *lsa_close(PyObject *self, PyObject *args, PyObject *kw)
 114 {
 115         PyObject *po;
 116         lsa_policy_hnd_object *hnd;
 117         NTSTATUS result;
 118
 119         /* Parse parameters */
 120
 121         if (!PyArg_ParseTuple(args, "O!", &lsa_policy_hnd_type, &po))
 122                 return NULL;
 123
 124         hnd = (lsa_policy_hnd_object *)po;
 125
 126         /* Call rpc function */
 127
 128         result = cli_lsa_close(hnd->cli, hnd->mem_ctx, &hnd->pol);
 129
 130         /* Cleanup samba stuff */
 131
 132         cli_shutdown(hnd->cli);
 133         talloc_destroy(hnd->mem_ctx);
 134
 135         /* Return value */
 136
 137         Py_INCREF(Py_None);
 138         return Py_None;
 139 }
 140
 141 static PyObject *lsa_lookup_names(PyObject *self, PyObject *args)
 142 {
 143         PyObject *py_names, *result = NULL;
 144         NTSTATUS ntstatus;
 145         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 146         int num_names, i;
 147         const char **names;
 148         DOM_SID *sids;
 149         TALLOC_CTX *mem_ctx = NULL;
 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 (!(mem_ctx = talloc_init("lsa_lookup_names"))) {
 161                 PyErr_SetString(lsa_error, "unable to init talloc context\n");
 162                 goto done;
 163         }
 164
 165         if (PyList_Check(py_names)) {
 166
 167                 /* Convert list to char ** array */
 168
 169                 num_names = PyList_Size(py_names);
 170                 names = (const char **)_talloc(mem_ctx, num_names * sizeof(char *));
 171
 172                 for (i = 0; i < num_names; i++) {
 173                         PyObject *obj = PyList_GetItem(py_names, i);
 174
 175                         names[i] = talloc_strdup(mem_ctx, PyString_AsString(obj));
 176                 }
 177
 178         } else {
 179
 180                 /* Just a single element */
 181
 182                 num_names = 1;
 183                 names = (const char **)_talloc(mem_ctx, sizeof(char *));
 184
 185                 names[0] = PyString_AsString(py_names);
 186         }
 187
 188         ntstatus = cli_lsa_lookup_names(hnd->cli, mem_ctx, &hnd->pol,
 189                                         num_names, names, &sids, &name_types);
 190
 191         if (!NT_STATUS_IS_OK(ntstatus) && NT_STATUS_V(ntstatus) != 0x107) {
 192                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 193                 goto done;
 194         }
 195
 196         result = PyList_New(num_names);
 197
 198         for (i = 0; i < num_names; i++) {
 199                 PyObject *sid_obj, *obj;
 200
 201                 py_from_SID(&sid_obj, &sids[i]);
 202
 203                 obj = Py_BuildValue("(Ni)", sid_obj, name_types[i]);
 204
 205                 PyList_SetItem(result, i, obj);
 206         }
 207
 208  done:
 209         talloc_destroy(mem_ctx);
 210
 211         return result;
 212 }
 213
 214 static PyObject *lsa_lookup_sids(PyObject *self, PyObject *args,
 215                                  PyObject *kw)
 216 {
 217         PyObject *py_sids, *result = NULL;
 218         NTSTATUS ntstatus;
 219         int num_sids, i;
 220         char **domains, **names;
 221         uint32 *types;
 222         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 223         TALLOC_CTX *mem_ctx = NULL;
 224         DOM_SID *sids;
 225
 226         if (!PyArg_ParseTuple(args, "O", &py_sids))
 227                 return NULL;
 228
 229         if (!PyList_Check(py_sids) && !PyString_Check(py_sids)) {
 230                 PyErr_SetString(PyExc_TypeError, "must be list or string");
 231                 return NULL;
 232         }
 233
 234         if (!(mem_ctx = talloc_init("lsa_lookup_sids"))) {
 235                 PyErr_SetString(lsa_error, "unable to init talloc context\n");
 236                 goto done;
 237         }
 238
 239         if (PyList_Check(py_sids)) {
 240
 241                 /* Convert dictionary to char ** array */
 242
 243                 num_sids = PyList_Size(py_sids);
 244                 sids = (DOM_SID *)_talloc(mem_ctx, num_sids * sizeof(DOM_SID));
 245
 246                 memset(sids, 0, num_sids * sizeof(DOM_SID));
 247
 248                 for (i = 0; i < num_sids; i++) {
 249                         PyObject *obj = PyList_GetItem(py_sids, i);
 250
 251                         if (!string_to_sid(&sids[i], PyString_AsString(obj))) {
 252                                 PyErr_SetString(PyExc_ValueError, "string_to_sid failed");
 253                                 goto done;
 254                         }
 255                 }
 256
 257         } else {
 258
 259                 /* Just a single element */
 260
 261                 num_sids = 1;
 262                 sids = (DOM_SID *)_talloc(mem_ctx, sizeof(DOM_SID));
 263
 264                 if (!string_to_sid(&sids[0], PyString_AsString(py_sids))) {
 265                         PyErr_SetString(PyExc_ValueError, "string_to_sid failed");
 266                         goto done;
 267                 }
 268         }
 269
 270         ntstatus = cli_lsa_lookup_sids(hnd->cli, mem_ctx, &hnd->pol,
 271                                        num_sids, sids, &domains, &names,
 272                                        &types);
 273
 274         if (!NT_STATUS_IS_OK(ntstatus)) {
 275                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 276                 goto done;
 277         }
 278
 279         result = PyList_New(num_sids);
 280
 281         for (i = 0; i < num_sids; i++) {
 282                 PyObject *obj;
 283
 284                 obj = Py_BuildValue("{sssssi}", "username", names[i],
 285                                     "domain", domains[i], "name_type",
 286                                     types[i]);
 287
 288                 PyList_SetItem(result, i, obj);
 289         }
 290
 291  done:
 292         talloc_destroy(mem_ctx);
 293
 294         return result;
 295 }
 296
 297 static PyObject *lsa_enum_trust_dom(PyObject *self, PyObject *args)
 298 {
 299         lsa_policy_hnd_object *hnd = (lsa_policy_hnd_object *)self;
 300         NTSTATUS ntstatus;
 301         uint32 enum_ctx = 0, num_domains, i;
 302         char **domain_names;
 303         DOM_SID *domain_sids;
 304         PyObject *result;
 305
 306         if (!PyArg_ParseTuple(args, ""))
 307                 return NULL;
 308
 309         ntstatus = cli_lsa_enum_trust_dom(
 310                 hnd->cli, hnd->mem_ctx, &hnd->pol, &enum_ctx,
 311                 &num_domains, &domain_names, &domain_sids);
 312
 313         if (!NT_STATUS_IS_OK(ntstatus)) {
 314                 PyErr_SetObject(lsa_ntstatus, py_ntstatus_tuple(ntstatus));
 315                 return NULL;
 316         }
 317
 318         result = PyList_New(num_domains);
 319
 320         for (i = 0; i < num_domains; i++) {
 321                 fstring sid_str;
 322
 323                 sid_to_string(sid_str, &domain_sids[i]);
 324                 PyList_SetItem(
 325                         result, i,
 326                         Py_BuildValue("(ss)", domain_names[i], sid_str));
 327         }
 328
 329         return result;
 330 }
 331
 332 /*
 333  * Method dispatch tables
 334  */
 335
 336 static PyMethodDef lsa_hnd_methods[] = {
 337
 338         /* SIDs<->names */
 339
 340         { "lookup_sids", (PyCFunction)lsa_lookup_sids,
 341           METH_VARARGS | METH_KEYWORDS,
 342           "Convert sids to names." },
 343
 344         { "lookup_names", (PyCFunction)lsa_lookup_names,
 345           METH_VARARGS | METH_KEYWORDS,
 346           "Convert names to sids." },
 347
 348         /* Trusted domains */
 349
 350         { "enum_trusted_domains", (PyCFunction)lsa_enum_trust_dom,
 351           METH_VARARGS,
 352           "Enumerate trusted domains." },
 353
 354         { NULL }
 355 };
 356
 357 static void py_lsa_policy_hnd_dealloc(PyObject* self)
 358 {
 359         PyObject_Del(self);
 360 }
 361
 362 static PyObject *py_lsa_policy_hnd_getattr(PyObject *self, char *attrname)
 363 {
 364         return Py_FindMethod(lsa_hnd_methods, self, attrname);
 365 }
 366
 367 PyTypeObject lsa_policy_hnd_type = {
 368         PyObject_HEAD_INIT(NULL)
 369         0,
 370         "LSA Policy Handle",
 371         sizeof(lsa_policy_hnd_object),
 372         0,
 373         py_lsa_policy_hnd_dealloc, /*tp_dealloc*/
 374         0,          /*tp_print*/
 375         py_lsa_policy_hnd_getattr,          /*tp_getattr*/
 376         0,          /*tp_setattr*/
 377         0,          /*tp_compare*/
 378         0,          /*tp_repr*/
 379         0,          /*tp_as_number*/
 380         0,          /*tp_as_sequence*/
 381         0,          /*tp_as_mapping*/
 382         0,          /*tp_hash */
 383 };
 384
 385 static PyMethodDef lsa_methods[] = {
 386
 387         /* Open/close lsa handles */
 388
 389         { "open_policy", (PyCFunction)lsa_open_policy,
 390           METH_VARARGS | METH_KEYWORDS,
 391           "Open a policy handle" },
 392
 393         { "close", (PyCFunction)lsa_close,
 394           METH_VARARGS,
 395           "Close a policy handle" },
 396
 397         /* Other stuff - this should really go into a samba config module
 398            but for the moment let's leave it here. */
 399
 400         { "setup_logging", (PyCFunction)py_setup_logging,
 401           METH_VARARGS | METH_KEYWORDS,
 402           "Set up debug logging.\n"
 403 "\n"
 404 "Initialises Samba's debug logging system.  One argument is expected which\n"
 405 "is a boolean specifying whether debugging is interactive and sent to stdout\n"
 406 "or logged to a file.\n"
 407 "\n"
 408 "Example:\n"
 409 "\n"
 410 ">>> lsa.setup_logging(interactive = 1)" },
 411
 412         { "get_debuglevel", (PyCFunction)get_debuglevel,
 413           METH_VARARGS,
 414           "Set the current debug level.\n"
 415 "\n"
 416 "Example:\n"
 417 "\n"
 418 ">>> lsa.get_debuglevel()\n"
 419 "0" },
 420
 421         { "set_debuglevel", (PyCFunction)set_debuglevel,
 422           METH_VARARGS,
 423           "Get the current debug level.\n"
 424 "\n"
 425 "Example:\n"
 426 "\n"
 427 ">>> lsa.set_debuglevel(10)" },
 428
 429         { NULL }
 430 };
 431
 432 static struct const_vals {
 433         char *name;
 434         uint32 value;
 435 } module_const_vals[] = {
 436         { NULL }
 437 };
 438
 439 static void const_init(PyObject *dict)
 440 {
 441         struct const_vals *tmp;
 442         PyObject *obj;
 443
 444         for (tmp = module_const_vals; tmp->name; tmp++) {
 445                 obj = PyInt_FromLong(tmp->value);
 446                 PyDict_SetItemString(dict, tmp->name, obj);
 447                 Py_DECREF(obj);
 448         }
 449 }
 450
 451 /*
 452  * Module initialisation
 453  */
 454
 455 void initlsa(void)
 456 {
 457         PyObject *module, *dict;
 458
 459         /* Initialise module */
 460
 461         module = Py_InitModule("lsa", lsa_methods);
 462         dict = PyModule_GetDict(module);
 463
 464         lsa_error = PyErr_NewException("lsa.error", NULL, NULL);
 465         PyDict_SetItemString(dict, "error", lsa_error);
 466
 467         lsa_ntstatus = PyErr_NewException("lsa.ntstatus", NULL, NULL);
 468         PyDict_SetItemString(dict, "ntstatus", lsa_ntstatus);
 469
 470         /* Initialise policy handle object */
 471
 472         lsa_policy_hnd_type.ob_type = &PyType_Type;
 473
 474         /* Initialise constants */
 475
 476         const_init(dict);
 477
 478         /* Do samba initialisation */
 479
 480         py_samba_init();
 481
 482         setup_logging("lsa", True);
 483         DEBUGLEVEL = 10;
 484 }