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 "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         PyDict_SetItemString(parameters, "use_ntvfs", PyInt_FromLong(settings->use_ntvfs));
 171
 172         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 173
 174         Py_DECREF(parameters);
 175
 176         if (py_result == NULL) {
 177                 PyErr_Print();
 178                 PyErr_Clear();
 179                 return NT_STATUS_UNSUCCESSFUL;
 180         }
 181
 182         result->domaindn = talloc_strdup(mem_ctx, PyString_AsString(PyObject_GetAttrString(py_result, "domaindn")));
 183
 184         /* FIXME paths */
 185         py_lp_ctx = PyObject_GetAttrString(py_result, "lp");
 186         if (py_lp_ctx == NULL) {
 187                 DEBUG(0, ("Missing 'lp' attribute"));
 188                 return NT_STATUS_UNSUCCESSFUL;
 189         }
 190         result->lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 191         result->samdb = pyldb_Ldb_AsLdbContext(PyObject_GetAttrString(py_result, "samdb"));
 192
 193         return NT_STATUS_OK;
 194 }
 195
 196 static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
 197 {
 198         PyObject *mod_security, *dom_sid_Type;
 199
 200         mod_security = PyImport_ImportModule("samba.dcerpc.security");
 201         if (mod_security == NULL)
 202                 return NULL;
 203
 204         dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
 205         if (dom_sid_Type == NULL)
 206                 return NULL;
 207
 208         return pytalloc_reference((PyTypeObject *)dom_sid_Type, sid);
 209 }
 210
 211 NTSTATUS provision_store_self_join(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx,
 212                                    struct tevent_context *event_ctx,
 213                                    struct provision_store_self_join_settings *settings,
 214                                    const char **error_string)
 215 {
 216         int ret;
 217         PyObject *provision_mod, *provision_dict, *provision_fn, *py_result, *parameters, *py_sid;
 218         struct ldb_context *ldb;
 219         TALLOC_CTX *tmp_mem = talloc_new(mem_ctx);
 220         if (!tmp_mem) {
 221                 return NT_STATUS_NO_MEMORY;
 222         }
 223
 224         /* Open the secrets database */
 225         ldb = secrets_db_connect(tmp_mem, lp_ctx);
 226         if (!ldb) {
 227                 *error_string
 228                         = talloc_asprintf(mem_ctx,
 229                                           "Could not open secrets database");
 230                 talloc_free(tmp_mem);
 231                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 232         }
 233
 234         ret = ldb_transaction_start(ldb);
 235
 236         if (ret != LDB_SUCCESS) {
 237                 *error_string
 238                         = talloc_asprintf(mem_ctx,
 239                                           "Could not start transaction on secrets database: %s", ldb_errstring(ldb));
 240                 talloc_free(tmp_mem);
 241                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 242         }
 243
 244         Py_Initialize();
 245         py_update_path(); /* Put the samba path at the start of sys.path */
 246         provision_mod = provision_module();
 247
 248         if (provision_mod == NULL) {
 249                 PyErr_Print();
 250                 *error_string
 251                         = talloc_asprintf(mem_ctx, "Unable to import provision Python module.");
 252                 talloc_free(tmp_mem);
 253                 return NT_STATUS_UNSUCCESSFUL;
 254         }
 255
 256         provision_dict = PyModule_GetDict(provision_mod);
 257
 258         if (provision_dict == NULL) {
 259                 *error_string
 260                         = talloc_asprintf(mem_ctx, "Unable to get dictionary for provision module");
 261                 talloc_free(tmp_mem);
 262                 return NT_STATUS_UNSUCCESSFUL;
 263         }
 264
 265         provision_fn = PyDict_GetItemString(provision_dict, "secretsdb_self_join");
 266         if (provision_fn == NULL) {
 267                 PyErr_Print();
 268                 *error_string
 269                         = talloc_asprintf(mem_ctx, "Unable to get provision_become_dc function");
 270                 talloc_free(tmp_mem);
 271                 return NT_STATUS_UNSUCCESSFUL;
 272         }
 273
 274         parameters = PyDict_New();
 275
 276         PyDict_SetItemString(parameters, "secretsdb",
 277                              PyLdb_FromLdbContext(ldb));
 278         PyDict_SetItemString(parameters, "domain",
 279                              PyString_FromString(settings->domain_name));
 280         if (settings->realm != NULL) {
 281                 PyDict_SetItemString(parameters, "realm",
 282                                      PyString_FromString(settings->realm));
 283         }
 284         PyDict_SetItemString(parameters, "machinepass",
 285                              PyString_FromString(settings->machine_password));
 286         PyDict_SetItemString(parameters, "netbiosname",
 287                              PyString_FromString(settings->netbios_name));
 288
 289         py_sid = py_dom_sid_FromSid(settings->domain_sid);
 290         if (py_sid == NULL) {
 291                 Py_DECREF(parameters);
 292                 goto failure;
 293         }
 294
 295         PyDict_SetItemString(parameters, "domainsid",
 296                              py_sid);
 297
 298         PyDict_SetItemString(parameters, "secure_channel_type",
 299                        PyInt_FromLong(settings->secure_channel_type));
 300
 301         PyDict_SetItemString(parameters, "key_version_number",
 302                        PyInt_FromLong(settings->key_version_number));
 303
 304         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 305
 306         Py_DECREF(parameters);
 307
 308         if (py_result == NULL) {
 309                 goto failure;
 310         }
 311
 312         ret = ldb_transaction_commit(ldb);
 313         if (ret != LDB_SUCCESS) {
 314                 *error_string
 315                         = talloc_asprintf(mem_ctx,
 316                                           "Could not commit transaction on secrets database: %s", ldb_errstring(ldb));
 317                 talloc_free(tmp_mem);
 318                 return NT_STATUS_INTERNAL_DB_ERROR;
 319         }
 320
 321         talloc_free(tmp_mem);
 322
 323         return NT_STATUS_OK;
 324
 325 failure:
 326         ldb_transaction_cancel(ldb);
 327         talloc_free(tmp_mem);
 328
 329         PyErr_Print();
 330         PyErr_Clear();
 331         return NT_STATUS_UNSUCCESSFUL;
 332 }
 333
 334
 335 struct ldb_context *provision_get_schema(TALLOC_CTX *mem_ctx,
 336                                          struct loadparm_context *lp_ctx,
 337                                          const char *schema_dn,
 338                                          DATA_BLOB *override_prefixmap)
 339 {
 340         PyObject *schema_mod, *schema_dict, *schema_fn, *py_result, *parameters;
 341
 342         Py_Initialize();
 343         py_update_path(); /* Put the samba path at the start of sys.path */
 344
 345         schema_mod = schema_module();
 346
 347         if (schema_mod == NULL) {
 348                 PyErr_Print();
 349                 DEBUG(0, ("Unable to import schema Python module.\n"));
 350                 return NULL;
 351         }
 352
 353         schema_dict = PyModule_GetDict(schema_mod);
 354
 355         if (schema_dict == NULL) {
 356                 DEBUG(0, ("Unable to get dictionary for schema module\n"));
 357                 return NULL;
 358         }
 359
 360         schema_fn = PyDict_GetItemString(schema_dict, "ldb_with_schema");
 361         if (schema_fn == NULL) {
 362                 PyErr_Print();
 363                 DEBUG(0, ("Unable to get schema_get_ldb function\n"));
 364                 return NULL;
 365         }
 366
 367         parameters = PyDict_New();
 368
 369         if (schema_dn) {
 370                 PyDict_SetItemString(parameters, "schemadn",
 371                                      PyString_FromString(schema_dn));
 372         }
 373
 374         if (override_prefixmap) {
 375                 PyDict_SetItemString(parameters, "override_prefixmap",
 376                                      PyString_FromStringAndSize((const char *)override_prefixmap->data,
 377                                                                 override_prefixmap->length));
 378         }
 379
 380         py_result = PyEval_CallObjectWithKeywords(schema_fn, NULL, parameters);
 381
 382         Py_DECREF(parameters);
 383
 384         if (py_result == NULL) {
 385                 PyErr_Print();
 386                 PyErr_Clear();
 387                 return NULL;
 388         }
 389
 390         return pyldb_Ldb_AsLdbContext(PyObject_GetAttrString(py_result, "ldb"));
 391 }