source4/scripting/python/pyglue.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   4    Copyright (C) Matthias Dieter Wallnöfer          2009
   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
  20 #include "includes.h"
  21 #include "ldb.h"
  22 #include "ldb_errors.h"
  23 #include "ldb_wrap.h"
  24 #include "param/param.h"
  25 #include "auth/credentials/credentials.h"
  26 #include "dsdb/samdb/samdb.h"
  27 #include "lib/ldb-samba/ldif_handlers.h"
  28 #include "librpc/ndr/libndr.h"
  29 #include "version.h"
  30 #include <Python.h>
  31 #include "lib/ldb/pyldb.h"
  32 #include "libcli/util/pyerrors.h"
  33 #include "libcli/security/security.h"
  34 #include "auth/pyauth.h"
  35 #include "param/pyparam.h"
  36 #include "auth/credentials/pycredentials.h"
  37
  38 #ifndef Py_RETURN_NONE
  39 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
  40 #endif
  41
  42 /* FIXME: These should be in a header file somewhere, once we finish moving
  43  * away from SWIG .. */
  44 #define PyErr_LDB_OR_RAISE(py_ldb, ldb) \
  45 /*      if (!PyLdb_Check(py_ldb)) { \
  46                 PyErr_SetString(py_ldb_get_exception(), "Ldb connection object required"); \
  47                 return NULL; \
  48         } */\
  49         ldb = PyLdb_AsLdbContext(py_ldb);
  50
  51 static void PyErr_SetLdbError(PyObject *error, int ret, struct ldb_context *ldb_ctx)
  52 {
  53         if (ret == LDB_ERR_PYTHON_EXCEPTION)
  54                 return; /* Python exception should already be set, just keep that */
  55
  56         PyErr_SetObject(error,
  57                                         Py_BuildValue(discard_const_p(char, "(i,s)"), ret,
  58                                   ldb_ctx == NULL?ldb_strerror(ret):ldb_errstring(ldb_ctx)));
  59 }
  60
  61 static PyObject *py_ldb_get_exception(void)
  62 {
  63         PyObject *mod = PyImport_ImportModule("ldb");
  64         if (mod == NULL)
  65                 return NULL;
  66
  67         return PyObject_GetAttrString(mod, "LdbError");
  68 }
  69
  70 static PyObject *py_generate_random_str(PyObject *self, PyObject *args)
  71 {
  72         int len;
  73         PyObject *ret;
  74         char *retstr;
  75         if (!PyArg_ParseTuple(args, "i", &len))
  76                 return NULL;
  77
  78         retstr = generate_random_str(NULL, len);
  79         ret = PyString_FromString(retstr);
  80         talloc_free(retstr);
  81         return ret;
  82 }
  83
  84 static PyObject *py_unix2nttime(PyObject *self, PyObject *args)
  85 {
  86         time_t t;
  87         NTTIME nt;
  88         if (!PyArg_ParseTuple(args, "I", &t))
  89                 return NULL;
  90
  91         unix_to_nt_time(&nt, t);
  92
  93         return PyInt_FromLong((uint64_t)nt);
  94 }
  95
  96 static PyObject *py_ldb_set_credentials(PyObject *self, PyObject *args)
  97 {
  98         PyObject *py_creds, *py_ldb;
  99         struct cli_credentials *creds;
 100         struct ldb_context *ldb;
 101         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_creds))
 102                 return NULL;
 103
 104         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 105
 106         creds = cli_credentials_from_py_object(py_creds);
 107         if (creds == NULL) {
 108                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 109                 return NULL;
 110         }
 111
 112         ldb_set_opaque(ldb, "credentials", creds);
 113
 114         Py_RETURN_NONE;
 115 }
 116
 117 static PyObject *py_ldb_set_loadparm(PyObject *self, PyObject *args)
 118 {
 119         PyObject *py_lp_ctx, *py_ldb;
 120         struct loadparm_context *lp_ctx;
 121         struct ldb_context *ldb;
 122         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_lp_ctx))
 123                 return NULL;
 124
 125         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 126
 127         lp_ctx = lp_from_py_object(py_lp_ctx);
 128         if (lp_ctx == NULL) {
 129                 PyErr_SetString(PyExc_TypeError, "Expected loadparm object");
 130                 return NULL;
 131         }
 132
 133         ldb_set_opaque(ldb, "loadparm", lp_ctx);
 134
 135         Py_RETURN_NONE;
 136 }
 137
 138
 139 static PyObject *py_ldb_set_session_info(PyObject *self, PyObject *args)
 140 {
 141         PyObject *py_session_info, *py_ldb;
 142         struct auth_session_info *info;
 143         struct ldb_context *ldb;
 144         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_session_info))
 145                 return NULL;
 146
 147         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 148         /*if (!PyAuthSession_Check(py_session_info)) {
 149                 PyErr_SetString(PyExc_TypeError, "Expected session info object");
 150                 return NULL;
 151         }*/
 152
 153         info = PyAuthSession_AsSession(py_session_info);
 154
 155         ldb_set_opaque(ldb, "sessionInfo", info);
 156
 157         Py_RETURN_NONE;
 158 }
 159
 160 static PyObject *py_ldb_set_utf8_casefold(PyObject *self, PyObject *args)
 161 {
 162         PyObject *py_ldb;
 163         struct ldb_context *ldb;
 164
 165         if (!PyArg_ParseTuple(args, "O", &py_ldb))
 166                 return NULL;
 167
 168         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 169
 170         ldb_set_utf8_fns(ldb, NULL, wrap_casefold);
 171
 172         Py_RETURN_NONE;
 173 }
 174
 175 static PyObject *py_samdb_set_domain_sid(PyLdbObject *self, PyObject *args)
 176 {
 177         PyObject *py_ldb, *py_sid;
 178         struct ldb_context *ldb;
 179         struct dom_sid *sid;
 180         bool ret;
 181
 182         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_sid))
 183                 return NULL;
 184
 185         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 186
 187         sid = dom_sid_parse_talloc(NULL, PyString_AsString(py_sid));
 188
 189         ret = samdb_set_domain_sid(ldb, sid);
 190         if (!ret) {
 191                 PyErr_SetString(PyExc_RuntimeError, "set_domain_sid failed");
 192                 return NULL;
 193         }
 194         Py_RETURN_NONE;
 195 }
 196
 197 static PyObject *py_ldb_register_samba_handlers(PyObject *self, PyObject *args)
 198 {
 199         PyObject *py_ldb;
 200         struct ldb_context *ldb;
 201         int ret;
 202
 203         if (!PyArg_ParseTuple(args, "O", &py_ldb))
 204                 return NULL;
 205
 206         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 207         ret = ldb_register_samba_handlers(ldb);
 208
 209         PyErr_LDB_ERROR_IS_ERR_RAISE(py_ldb_get_exception(), ret, ldb);
 210         Py_RETURN_NONE;
 211 }
 212
 213 static PyObject *py_dsdb_set_ntds_invocation_id(PyObject *self, PyObject *args)
 214 {
 215         PyObject *py_ldb, *py_guid;
 216         bool ret;
 217         struct GUID guid;
 218         struct ldb_context *ldb;
 219         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_guid))
 220                 return NULL;
 221
 222         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 223         GUID_from_string(PyString_AsString(py_guid), &guid);
 224
 225         ret = samdb_set_ntds_invocation_id(ldb, &guid);
 226         if (!ret) {
 227                 PyErr_SetString(PyExc_RuntimeError, "set_ntds_invocation_id failed");
 228                 return NULL;
 229         }
 230         Py_RETURN_NONE;
 231 }
 232
 233 static PyObject *py_dsdb_set_opaque_integer(PyObject *self, PyObject *args)
 234 {
 235         PyObject *py_ldb;
 236         int value;
 237         int *old_val, *new_val;
 238         char *py_opaque_name, *opaque_name_talloc;
 239         struct ldb_context *ldb;
 240         TALLOC_CTX *tmp_ctx;
 241
 242         if (!PyArg_ParseTuple(args, "Osi", &py_ldb, &py_opaque_name, &value))
 243                 return NULL;
 244
 245         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 246
 247         /* see if we have a cached copy */
 248         old_val = (int *)ldb_get_opaque(ldb,
 249                                         py_opaque_name);
 250
 251         if (old_val) {
 252                 *old_val = value;
 253                 Py_RETURN_NONE;
 254         }
 255
 256         tmp_ctx = talloc_new(ldb);
 257         if (tmp_ctx == NULL) {
 258                 goto failed;
 259         }
 260
 261         new_val = talloc(tmp_ctx, int);
 262         if (!new_val) {
 263                 goto failed;
 264         }
 265
 266         opaque_name_talloc = talloc_strdup(tmp_ctx, py_opaque_name);
 267         if (!opaque_name_talloc) {
 268                 goto failed;
 269         }
 270
 271         *new_val = value;
 272
 273         /* cache the domain_sid in the ldb */
 274         if (ldb_set_opaque(ldb, opaque_name_talloc, new_val) != LDB_SUCCESS) {
 275                 goto failed;
 276         }
 277
 278         talloc_steal(ldb, new_val);
 279         talloc_steal(ldb, opaque_name_talloc);
 280         talloc_free(tmp_ctx);
 281
 282         Py_RETURN_NONE;
 283
 284 failed:
 285         talloc_free(tmp_ctx);
 286         PyErr_SetString(PyExc_RuntimeError, "Failed to set opaque integer into the ldb!\n");
 287         return NULL;
 288 }
 289
 290 static PyObject *py_dsdb_set_global_schema(PyObject *self, PyObject *args)
 291 {
 292         PyObject *py_ldb;
 293         struct ldb_context *ldb;
 294         int ret;
 295         if (!PyArg_ParseTuple(args, "O", &py_ldb))
 296                 return NULL;
 297
 298         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 299
 300         ret = dsdb_set_global_schema(ldb);
 301         PyErr_LDB_ERROR_IS_ERR_RAISE(py_ldb_get_exception(), ret, ldb);
 302
 303         Py_RETURN_NONE;
 304 }
 305
 306 static PyObject *py_dsdb_set_schema_from_ldif(PyObject *self, PyObject *args)
 307 {
 308         WERROR result;
 309         char *pf, *df;
 310         PyObject *py_ldb;
 311         struct ldb_context *ldb;
 312
 313         if (!PyArg_ParseTuple(args, "Oss", &py_ldb, &pf, &df))
 314                 return NULL;
 315
 316         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 317
 318         result = dsdb_set_schema_from_ldif(ldb, pf, df);
 319         PyErr_WERROR_IS_ERR_RAISE(result);
 320
 321         Py_RETURN_NONE;
 322 }
 323
 324 static PyObject *py_dsdb_convert_schema_to_openldap(PyObject *self, PyObject *args)
 325 {
 326         char *target_str, *mapping;
 327         PyObject *py_ldb;
 328         struct ldb_context *ldb;
 329         PyObject *ret;
 330         char *retstr;
 331
 332         if (!PyArg_ParseTuple(args, "Oss", &py_ldb, &target_str, &mapping))
 333                 return NULL;
 334
 335         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 336
 337         retstr = dsdb_convert_schema_to_openldap(ldb, target_str, mapping);
 338         if (!retstr) {
 339                 PyErr_SetString(PyExc_RuntimeError, "dsdb_convert_schema_to_openldap failed");
 340                 return NULL;
 341         }
 342         ret = PyString_FromString(retstr);
 343         talloc_free(retstr);
 344         return ret;
 345 }
 346
 347 static PyObject *py_dsdb_write_prefixes_from_schema_to_ldb(PyObject *self, PyObject *args)
 348 {
 349         PyObject *py_ldb;
 350         struct ldb_context *ldb;
 351         WERROR result;
 352         struct dsdb_schema *schema;
 353
 354         if (!PyArg_ParseTuple(args, "O", &py_ldb))
 355                 return NULL;
 356
 357         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 358
 359         schema = dsdb_get_schema(ldb);
 360         if (!schema) {
 361                 PyErr_SetString(PyExc_RuntimeError, "Failed to set find a schema on ldb!\n");
 362                 return NULL;
 363         }
 364
 365         result = dsdb_write_prefixes_from_schema_to_ldb(NULL, ldb, schema);
 366         PyErr_WERROR_IS_ERR_RAISE(result);
 367
 368         Py_RETURN_NONE;
 369 }
 370
 371 static PyObject *py_dsdb_set_schema_from_ldb(PyObject *self, PyObject *args)
 372 {
 373         PyObject *py_ldb;
 374         struct ldb_context *ldb;
 375         PyObject *py_from_ldb;
 376         struct ldb_context *from_ldb;
 377         struct dsdb_schema *schema;
 378         int ret;
 379         if (!PyArg_ParseTuple(args, "OO", &py_ldb, &py_from_ldb))
 380                 return NULL;
 381
 382         PyErr_LDB_OR_RAISE(py_ldb, ldb);
 383
 384         PyErr_LDB_OR_RAISE(py_from_ldb, from_ldb);
 385
 386         schema = dsdb_get_schema(from_ldb);
 387         if (!schema) {
 388                 PyErr_SetString(PyExc_RuntimeError, "Failed to set find a schema on 'from' ldb!\n");
 389                 return NULL;
 390         }
 391
 392         ret = dsdb_reference_schema(ldb, schema, true);
 393         PyErr_LDB_ERROR_IS_ERR_RAISE(py_ldb_get_exception(), ret, ldb);
 394
 395         Py_RETURN_NONE;
 396 }
 397
 398 static PyObject *py_dom_sid_to_rid(PyLdbObject *self, PyObject *args)
 399 {
 400         PyObject *py_sid;
 401         struct dom_sid *sid;
 402         uint32_t rid;
 403         NTSTATUS status;
 404
 405         if(!PyArg_ParseTuple(args, "O", &py_sid))
 406                 return NULL;
 407
 408         sid = dom_sid_parse_talloc(NULL, PyString_AsString(py_sid));
 409
 410         status = dom_sid_split_rid(NULL, sid, NULL, &rid);
 411         if (!NT_STATUS_IS_OK(status)) {
 412                 PyErr_SetString(PyExc_RuntimeError, "dom_sid_split_rid failed");
 413                 return NULL;
 414         }
 415
 416         return PyInt_FromLong(rid);
 417 }
 418
 419 static PyMethodDef py_misc_methods[] = {
 420         { "generate_random_str", (PyCFunction)py_generate_random_str, METH_VARARGS,
 421                 "random_password(len) -> string\n"
 422                 "Generate random password with specified length." },
 423         { "unix2nttime", (PyCFunction)py_unix2nttime, METH_VARARGS,
 424                 "unix2nttime(timestamp) -> nttime" },
 425         { "ldb_set_credentials", (PyCFunction)py_ldb_set_credentials, METH_VARARGS,
 426                 "ldb_set_credentials(ldb, credentials) -> None\n"
 427                 "Set credentials to use when connecting." },
 428         { "ldb_set_session_info", (PyCFunction)py_ldb_set_session_info, METH_VARARGS,
 429                 "ldb_set_session_info(ldb, session_info)\n"
 430                 "Set session info to use when connecting." },
 431         { "ldb_set_loadparm", (PyCFunction)py_ldb_set_loadparm, METH_VARARGS,
 432                 "ldb_set_loadparm(ldb, session_info)\n"
 433                 "Set loadparm context to use when connecting." },
 434         { "samdb_set_domain_sid", (PyCFunction)py_samdb_set_domain_sid, METH_VARARGS,
 435                 "samdb_set_domain_sid(samdb, sid)\n"
 436                 "Set SID of domain to use." },
 437         { "ldb_register_samba_handlers", (PyCFunction)py_ldb_register_samba_handlers, METH_VARARGS,
 438                 "ldb_register_samba_handlers(ldb)\n"
 439                 "Register Samba-specific LDB modules and schemas." },
 440         { "ldb_set_utf8_casefold", (PyCFunction)py_ldb_set_utf8_casefold, METH_VARARGS,
 441                 "ldb_set_utf8_casefold(ldb)\n"
 442                 "Set the right Samba casefolding function for UTF8 charset." },
 443         { "dsdb_set_ntds_invocation_id", (PyCFunction)py_dsdb_set_ntds_invocation_id, METH_VARARGS,
 444                 NULL },
 445         { "dsdb_set_opaque_integer", (PyCFunction)py_dsdb_set_opaque_integer, METH_VARARGS,
 446                 NULL },
 447         { "dsdb_set_global_schema", (PyCFunction)py_dsdb_set_global_schema, METH_VARARGS,
 448                 NULL },
 449         { "dsdb_set_schema_from_ldif", (PyCFunction)py_dsdb_set_schema_from_ldif, METH_VARARGS,
 450                 NULL },
 451         { "dsdb_write_prefixes_from_schema_to_ldb", (PyCFunction)py_dsdb_write_prefixes_from_schema_to_ldb, METH_VARARGS,
 452                 NULL },
 453         { "dsdb_set_schema_from_ldb", (PyCFunction)py_dsdb_set_schema_from_ldb, METH_VARARGS,
 454                 NULL },
 455         { "dsdb_convert_schema_to_openldap", (PyCFunction)py_dsdb_convert_schema_to_openldap, METH_VARARGS,
 456                 NULL },
 457         { "dom_sid_to_rid", (PyCFunction)py_dom_sid_to_rid, METH_VARARGS,
 458                 NULL },
 459         { NULL }
 460 };
 461
 462 void initglue(void)
 463 {
 464         PyObject *m;
 465
 466         m = Py_InitModule3("glue", py_misc_methods,
 467                            "Python bindings for miscellaneous Samba functions.");
 468         if (m == NULL)
 469                 return;
 470
 471         PyModule_AddObject(m, "version", PyString_FromString(SAMBA_VERSION_STRING));
 472
 473         PyModule_AddObject(m, "DS_BEHAVIOR_WIN2000", PyInt_FromLong(DS_BEHAVIOR_WIN2000));
 474         PyModule_AddObject(m, "DS_BEHAVIOR_WIN2003_INTERIM", PyInt_FromLong(DS_BEHAVIOR_WIN2003_INTERIM));
 475         PyModule_AddObject(m, "DS_BEHAVIOR_WIN2003", PyInt_FromLong(DS_BEHAVIOR_WIN2003));
 476         PyModule_AddObject(m, "DS_BEHAVIOR_WIN2008", PyInt_FromLong(DS_BEHAVIOR_WIN2008));
 477
 478 }
 479