source4/param/provision.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2009
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   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
  21 #include <Python.h>
  22 #include <ldb.h>
  23 #include <pyldb.h>
  24 #include "includes.h"
  25 #include "librpc/ndr/libndr.h"
  26 #include "param/provision.h"
  27 #include "param/secrets.h"
  28 #include <pytalloc.h>
  29 #include "scripting/python/modules.h"
  30 #include "param/pyparam.h"
  31 #include "dynconfig/dynconfig.h"
  32
  33 static PyObject *provision_module(void)
  34 {
  35         PyObject *name = PyString_FromString("samba.provision");
  36         if (name == NULL)
  37                 return NULL;
  38         return PyImport_Import(name);
  39 }
  40
  41 static PyObject *schema_module(void)
  42 {
  43         PyObject *name = PyString_FromString("samba.schema");
  44         if (name == NULL)
  45                 return NULL;
  46         return PyImport_Import(name);
  47 }
  48
  49 static PyObject *ldb_module(void)
  50 {
  51         PyObject *name = PyString_FromString("ldb");
  52         if (name == NULL)
  53                 return NULL;
  54         return PyImport_Import(name);
  55 }
  56
  57 static PyObject *PyLdb_FromLdbContext(struct ldb_context *ldb_ctx)
  58 {
  59         PyLdbObject *ret;
  60         PyObject *ldb_mod = ldb_module();
  61         PyTypeObject *ldb_ctx_type;
  62         if (ldb_mod == NULL)
  63                 return NULL;
  64
  65         ldb_ctx_type = (PyTypeObject *)PyObject_GetAttrString(ldb_mod, "Ldb");
  66
  67         ret = (PyLdbObject *)ldb_ctx_type->tp_alloc(ldb_ctx_type, 0);
  68         if (ret == NULL) {
  69                 PyErr_NoMemory();
  70                 return NULL;
  71         }
  72         ret->mem_ctx = talloc_new(NULL);
  73         ret->ldb_ctx = talloc_reference(ret->mem_ctx, ldb_ctx);
  74         return (PyObject *)ret;
  75 }
  76
  77 NTSTATUS provision_bare(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx,
  78                         struct provision_settings *settings,
  79                         struct provision_result *result)
  80 {
  81         const char *configfile;
  82         PyObject *provision_mod, *provision_dict, *provision_fn, *py_result, *parameters, *py_lp_ctx;
  83
  84         DEBUG(0,("Provision for Become-DC test using python\n"));
  85
  86         Py_Initialize();
  87         py_update_path(); /* Put the samba path at the start of sys.path */
  88
  89         provision_mod = provision_module();
  90
  91         if (provision_mod == NULL) {
  92                 PyErr_Print();
  93                 DEBUG(0, ("Unable to import provision Python module.\n"));
  94                 return NT_STATUS_UNSUCCESSFUL;
  95         }
  96
  97         provision_dict = PyModule_GetDict(provision_mod);
  98
  99         if (provision_dict == NULL) {
 100                 DEBUG(0, ("Unable to get dictionary for provision module\n"));
 101                 return NT_STATUS_UNSUCCESSFUL;
 102         }
 103
 104         provision_fn = PyDict_GetItemString(provision_dict, "provision_become_dc");
 105         if (provision_fn == NULL) {
 106                 PyErr_Print();
 107                 DEBUG(0, ("Unable to get provision_become_dc function\n"));
 108                 return NT_STATUS_UNSUCCESSFUL;
 109         }
 110
 111         DEBUG(0,("New Server in Site[%s]\n",
 112                  settings->site_name));
 113
 114         DEBUG(0,("DSA Instance [%s]\n"
 115                 "\tinvocationId[%s]\n",
 116                 settings->ntds_dn_str,
 117                 settings->invocation_id == NULL?"None":GUID_string(mem_ctx, settings->invocation_id)));
 118
 119         DEBUG(0,("Paths under targetdir[%s]\n",
 120                  settings->targetdir));
 121         parameters = PyDict_New();
 122
 123         configfile = lpcfg_configfile(lp_ctx);
 124         if (configfile != NULL) {
 125                 PyDict_SetItemString(parameters, "smbconf",
 126                                      PyString_FromString(configfile));
 127         }
 128
 129         PyDict_SetItemString(parameters, "rootdn",
 130                                                  PyString_FromString(settings->root_dn_str));
 131         if (settings->targetdir != NULL)
 132                 PyDict_SetItemString(parameters, "targetdir",
 133                                                          PyString_FromString(settings->targetdir));
 134         PyDict_SetItemString(parameters, "hostname",
 135                                                  PyString_FromString(settings->netbios_name));
 136         PyDict_SetItemString(parameters, "domain",
 137                                                  PyString_FromString(settings->domain));
 138         PyDict_SetItemString(parameters, "realm",
 139                                                  PyString_FromString(settings->realm));
 140         if (settings->root_dn_str)
 141                 PyDict_SetItemString(parameters, "rootdn",
 142                                      PyString_FromString(settings->root_dn_str));
 143
 144         if (settings->domain_dn_str)
 145                 PyDict_SetItemString(parameters, "domaindn",
 146                                      PyString_FromString(settings->domain_dn_str));
 147
 148         if (settings->schema_dn_str)
 149                 PyDict_SetItemString(parameters, "schemadn",
 150                                      PyString_FromString(settings->schema_dn_str));
 151
 152         if (settings->config_dn_str)
 153                 PyDict_SetItemString(parameters, "configdn",
 154                                      PyString_FromString(settings->config_dn_str));
 155
 156         if (settings->server_dn_str)
 157                 PyDict_SetItemString(parameters, "serverdn",
 158                                      PyString_FromString(settings->server_dn_str));
 159
 160         if (settings->site_name)
 161                 PyDict_SetItemString(parameters, "sitename",
 162                                      PyString_FromString(settings->site_name));
 163
 164         PyDict_SetItemString(parameters, "machinepass",
 165                              PyString_FromString(settings->machine_password));
 166
 167
 168         PyDict_SetItemString(parameters, "debuglevel", PyInt_FromLong(DEBUGLEVEL));
 169
 170         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 171
 172         Py_DECREF(parameters);
 173
 174         if (py_result == NULL) {
 175                 PyErr_Print();
 176                 PyErr_Clear();
 177                 return NT_STATUS_UNSUCCESSFUL;
 178         }
 179
 180         result->domaindn = talloc_strdup(mem_ctx, PyString_AsString(PyObject_GetAttrString(py_result, "domaindn")));
 181
 182         /* FIXME paths */
 183         py_lp_ctx = PyObject_GetAttrString(py_result, "lp");
 184         if (py_lp_ctx == NULL) {
 185                 DEBUG(0, ("Missing 'lp' attribute"));
 186                 return NT_STATUS_UNSUCCESSFUL;
 187         }
 188         result->lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 189         result->samdb = pyldb_Ldb_AsLdbContext(PyObject_GetAttrString(py_result, "samdb"));
 190
 191         return NT_STATUS_OK;
 192 }
 193
 194 static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
 195 {
 196         PyObject *mod_security, *dom_sid_Type;
 197
 198         mod_security = PyImport_ImportModule("samba.dcerpc.security");
 199         if (mod_security == NULL)
 200                 return NULL;
 201
 202         dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
 203         if (dom_sid_Type == NULL)
 204                 return NULL;
 205
 206         return pytalloc_reference((PyTypeObject *)dom_sid_Type, sid);
 207 }
 208
 209 NTSTATUS provision_store_self_join(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx,
 210                                    struct tevent_context *event_ctx,
 211                                    struct provision_store_self_join_settings *settings,
 212                                    const char **error_string)
 213 {
 214         int ret;
 215         PyObject *provision_mod, *provision_dict, *provision_fn, *py_result, *parameters, *py_sid;
 216         struct ldb_context *ldb;
 217         TALLOC_CTX *tmp_mem = talloc_new(mem_ctx);
 218         if (!tmp_mem) {
 219                 return NT_STATUS_NO_MEMORY;
 220         }
 221
 222         /* Open the secrets database */
 223         ldb = secrets_db_connect(tmp_mem, lp_ctx);
 224         if (!ldb) {
 225                 *error_string
 226                         = talloc_asprintf(mem_ctx,
 227                                           "Could not open secrets database");
 228                 talloc_free(tmp_mem);
 229                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 230         }
 231
 232         ret = ldb_transaction_start(ldb);
 233
 234         if (ret != LDB_SUCCESS) {
 235                 *error_string
 236                         = talloc_asprintf(mem_ctx,
 237                                           "Could not start transaction on secrets database: %s", ldb_errstring(ldb));
 238                 talloc_free(tmp_mem);
 239                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 240         }
 241
 242         Py_Initialize();
 243         py_update_path(); /* Put the samba path at the start of sys.path */
 244         provision_mod = provision_module();
 245
 246         if (provision_mod == NULL) {
 247                 PyErr_Print();
 248                 *error_string
 249                         = talloc_asprintf(mem_ctx, "Unable to import provision Python module.");
 250                 talloc_free(tmp_mem);
 251                 return NT_STATUS_UNSUCCESSFUL;
 252         }
 253
 254         provision_dict = PyModule_GetDict(provision_mod);
 255
 256         if (provision_dict == NULL) {
 257                 *error_string
 258                         = talloc_asprintf(mem_ctx, "Unable to get dictionary for provision module");
 259                 talloc_free(tmp_mem);
 260                 return NT_STATUS_UNSUCCESSFUL;
 261         }
 262
 263         provision_fn = PyDict_GetItemString(provision_dict, "secretsdb_self_join");
 264         if (provision_fn == NULL) {
 265                 PyErr_Print();
 266                 *error_string
 267                         = talloc_asprintf(mem_ctx, "Unable to get provision_become_dc function");
 268                 talloc_free(tmp_mem);
 269                 return NT_STATUS_UNSUCCESSFUL;
 270         }
 271
 272         parameters = PyDict_New();
 273
 274         PyDict_SetItemString(parameters, "secretsdb",
 275                              PyLdb_FromLdbContext(ldb));
 276         PyDict_SetItemString(parameters, "domain",
 277                              PyString_FromString(settings->domain_name));
 278         if (settings->realm != NULL) {
 279                 PyDict_SetItemString(parameters, "realm",
 280                                      PyString_FromString(settings->realm));
 281         }
 282         PyDict_SetItemString(parameters, "machinepass",
 283                              PyString_FromString(settings->machine_password));
 284         PyDict_SetItemString(parameters, "netbiosname",
 285                              PyString_FromString(settings->netbios_name));
 286
 287         py_sid = py_dom_sid_FromSid(settings->domain_sid);
 288         if (py_sid == NULL) {
 289                 Py_DECREF(parameters);
 290                 goto failure;
 291         }
 292
 293         PyDict_SetItemString(parameters, "domainsid",
 294                              py_sid);
 295
 296         PyDict_SetItemString(parameters, "secure_channel_type",
 297                        PyInt_FromLong(settings->secure_channel_type));
 298
 299         PyDict_SetItemString(parameters, "key_version_number",
 300                        PyInt_FromLong(settings->key_version_number));
 301
 302         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 303
 304         Py_DECREF(parameters);
 305
 306         if (py_result == NULL) {
 307                 goto failure;
 308         }
 309
 310         ret = ldb_transaction_commit(ldb);
 311         if (ret != LDB_SUCCESS) {
 312                 *error_string
 313                         = talloc_asprintf(mem_ctx,
 314                                           "Could not commit transaction on secrets database: %s", ldb_errstring(ldb));
 315                 talloc_free(tmp_mem);
 316                 return NT_STATUS_INTERNAL_DB_ERROR;
 317         }
 318
 319         talloc_free(tmp_mem);
 320
 321         return NT_STATUS_OK;
 322
 323 failure:
 324         ldb_transaction_cancel(ldb);
 325         talloc_free(tmp_mem);
 326
 327         PyErr_Print();
 328         PyErr_Clear();
 329         return NT_STATUS_UNSUCCESSFUL;
 330 }
 331
 332
 333 struct ldb_context *provision_get_schema(TALLOC_CTX *mem_ctx,
 334                                          struct loadparm_context *lp_ctx,
 335                                          const char *schema_dn,
 336                                          DATA_BLOB *override_prefixmap)
 337 {
 338         PyObject *schema_mod, *schema_dict, *schema_fn, *py_result, *parameters;
 339
 340         Py_Initialize();
 341         py_update_path(); /* Put the samba path at the start of sys.path */
 342
 343         schema_mod = schema_module();
 344
 345         if (schema_mod == NULL) {
 346                 PyErr_Print();
 347                 DEBUG(0, ("Unable to import schema Python module.\n"));
 348                 return NULL;
 349         }
 350
 351         schema_dict = PyModule_GetDict(schema_mod);
 352
 353         if (schema_dict == NULL) {
 354                 DEBUG(0, ("Unable to get dictionary for schema module\n"));
 355                 return NULL;
 356         }
 357
 358         schema_fn = PyDict_GetItemString(schema_dict, "ldb_with_schema");
 359         if (schema_fn == NULL) {
 360                 PyErr_Print();
 361                 DEBUG(0, ("Unable to get schema_get_ldb function\n"));
 362                 return NULL;
 363         }
 364
 365         parameters = PyDict_New();
 366
 367         if (schema_dn) {
 368                 PyDict_SetItemString(parameters, "schemadn",
 369                                      PyString_FromString(schema_dn));
 370         }
 371
 372         if (override_prefixmap) {
 373                 PyDict_SetItemString(parameters, "override_prefixmap",
 374                                      PyString_FromStringAndSize((const char *)override_prefixmap->data,
 375                                                                 override_prefixmap->length));
 376         }
 377
 378         py_result = PyEval_CallObjectWithKeywords(schema_fn, NULL, parameters);
 379
 380         Py_DECREF(parameters);
 381
 382         if (py_result == NULL) {
 383                 PyErr_Print();
 384                 PyErr_Clear();
 385                 return NULL;
 386         }
 387
 388         return pyldb_Ldb_AsLdbContext(PyObject_GetAttrString(py_result, "ldb"));
 389 }