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 "lib/talloc/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("bin"); /* FIXME: Can't assume this is always the case */
  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         if (file_exist("setup/provision.smb.conf.dc")) {
 135                 PyDict_SetItemString(parameters, "setup_dir",
 136                                      PyString_FromString("setup"));
 137         } else {
 138                 PyDict_SetItemString(parameters, "setup_dir",
 139                                      PyString_FromString(dyn_SETUPDIR));
 140         }
 141         PyDict_SetItemString(parameters, "hostname",
 142                                                  PyString_FromString(settings->netbios_name));
 143         PyDict_SetItemString(parameters, "domain",
 144                                                  PyString_FromString(settings->domain));
 145         PyDict_SetItemString(parameters, "realm",
 146                                                  PyString_FromString(settings->realm));
 147         if (settings->root_dn_str)
 148                 PyDict_SetItemString(parameters, "rootdn",
 149                                      PyString_FromString(settings->root_dn_str));
 150
 151         if (settings->domain_dn_str)
 152                 PyDict_SetItemString(parameters, "domaindn",
 153                                      PyString_FromString(settings->domain_dn_str));
 154
 155         if (settings->schema_dn_str)
 156                 PyDict_SetItemString(parameters, "schemadn",
 157                                      PyString_FromString(settings->schema_dn_str));
 158
 159         if (settings->config_dn_str)
 160                 PyDict_SetItemString(parameters, "configdn",
 161                                      PyString_FromString(settings->config_dn_str));
 162
 163         if (settings->server_dn_str)
 164                 PyDict_SetItemString(parameters, "serverdn",
 165                                      PyString_FromString(settings->server_dn_str));
 166
 167         if (settings->site_name)
 168                 PyDict_SetItemString(parameters, "sitename",
 169                                      PyString_FromString(settings->site_name));
 170
 171         PyDict_SetItemString(parameters, "machinepass",
 172                              PyString_FromString(settings->machine_password));
 173
 174
 175         PyDict_SetItemString(parameters, "debuglevel", PyInt_FromLong(DEBUGLEVEL));
 176
 177         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 178
 179         Py_DECREF(parameters);
 180
 181         if (py_result == NULL) {
 182                 PyErr_Print();
 183                 PyErr_Clear();
 184                 return NT_STATUS_UNSUCCESSFUL;
 185         }
 186
 187         result->domaindn = talloc_strdup(mem_ctx, PyString_AsString(PyObject_GetAttrString(py_result, "domaindn")));
 188
 189         /* FIXME paths */
 190         py_lp_ctx = PyObject_GetAttrString(py_result, "lp");
 191         if (py_lp_ctx == NULL) {
 192                 DEBUG(0, ("Missing 'lp' attribute"));
 193                 return NT_STATUS_UNSUCCESSFUL;
 194         }
 195         result->lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
 196         result->samdb = PyLdb_AsLdbContext(PyObject_GetAttrString(py_result, "samdb"));
 197
 198         return NT_STATUS_OK;
 199 }
 200
 201 static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
 202 {
 203         PyObject *mod_security, *dom_sid_Type;
 204
 205         mod_security = PyImport_ImportModule("samba.dcerpc.security");
 206         if (mod_security == NULL)
 207                 return NULL;
 208
 209         dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
 210         if (dom_sid_Type == NULL)
 211                 return NULL;
 212
 213         return py_talloc_reference((PyTypeObject *)dom_sid_Type, sid);
 214 }
 215
 216 NTSTATUS provision_store_self_join(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx,
 217                                    struct tevent_context *event_ctx,
 218                                    struct provision_store_self_join_settings *settings,
 219                                    const char **error_string)
 220 {
 221         int ret;
 222         PyObject *provision_mod, *provision_dict, *provision_fn, *py_result, *parameters, *py_sid;
 223         struct ldb_context *ldb;
 224         TALLOC_CTX *tmp_mem = talloc_new(mem_ctx);
 225         if (!tmp_mem) {
 226                 return NT_STATUS_NO_MEMORY;
 227         }
 228
 229         /* Open the secrets database */
 230         ldb = secrets_db_connect(tmp_mem, lp_ctx);
 231         if (!ldb) {
 232                 *error_string
 233                         = talloc_asprintf(mem_ctx,
 234                                           "Could not open secrets database");
 235                 talloc_free(tmp_mem);
 236                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 237         }
 238
 239         ret = ldb_transaction_start(ldb);
 240
 241         if (ret != LDB_SUCCESS) {
 242                 *error_string
 243                         = talloc_asprintf(mem_ctx,
 244                                           "Could not start transaction on secrets database: %s", ldb_errstring(ldb));
 245                 talloc_free(tmp_mem);
 246                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 247         }
 248
 249         Py_Initialize();
 250         py_update_path("bin"); /* FIXME: Can't assume this is always the case */
 251         provision_mod = provision_module();
 252
 253         if (provision_mod == NULL) {
 254                 PyErr_Print();
 255                 *error_string
 256                         = talloc_asprintf(mem_ctx, "Unable to import provision Python module.");
 257                 talloc_free(tmp_mem);
 258                 return NT_STATUS_UNSUCCESSFUL;
 259         }
 260
 261         provision_dict = PyModule_GetDict(provision_mod);
 262
 263         if (provision_dict == NULL) {
 264                 *error_string
 265                         = talloc_asprintf(mem_ctx, "Unable to get dictionary for provision module");
 266                 talloc_free(tmp_mem);
 267                 return NT_STATUS_UNSUCCESSFUL;
 268         }
 269
 270         provision_fn = PyDict_GetItemString(provision_dict, "secretsdb_self_join");
 271         if (provision_fn == NULL) {
 272                 PyErr_Print();
 273                 *error_string
 274                         = talloc_asprintf(mem_ctx, "Unable to get provision_become_dc function");
 275                 talloc_free(tmp_mem);
 276                 return NT_STATUS_UNSUCCESSFUL;
 277         }
 278
 279         parameters = PyDict_New();
 280
 281         PyDict_SetItemString(parameters, "secretsdb",
 282                              PyLdb_FromLdbContext(ldb));
 283         PyDict_SetItemString(parameters, "domain",
 284                              PyString_FromString(settings->domain_name));
 285         if (settings->realm != NULL) {
 286                 PyDict_SetItemString(parameters, "realm",
 287                                      PyString_FromString(settings->realm));
 288         }
 289         PyDict_SetItemString(parameters, "machinepass",
 290                              PyString_FromString(settings->machine_password));
 291         PyDict_SetItemString(parameters, "netbiosname",
 292                              PyString_FromString(settings->netbios_name));
 293
 294         py_sid = py_dom_sid_FromSid(settings->domain_sid);
 295         if (py_sid == NULL) {
 296                 Py_DECREF(parameters);
 297                 goto failure;
 298         }
 299
 300         PyDict_SetItemString(parameters, "domainsid",
 301                              py_sid);
 302
 303         PyDict_SetItemString(parameters, "secure_channel_type",
 304                        PyInt_FromLong(settings->secure_channel_type));
 305
 306         PyDict_SetItemString(parameters, "key_version_number",
 307                        PyInt_FromLong(settings->key_version_number));
 308
 309         py_result = PyEval_CallObjectWithKeywords(provision_fn, NULL, parameters);
 310
 311         Py_DECREF(parameters);
 312
 313         if (py_result == NULL) {
 314                 goto failure;
 315         }
 316
 317         ret = ldb_transaction_commit(ldb);
 318         if (ret != LDB_SUCCESS) {
 319                 *error_string
 320                         = talloc_asprintf(mem_ctx,
 321                                           "Could not commit transaction on secrets database: %s", ldb_errstring(ldb));
 322                 talloc_free(tmp_mem);
 323                 return NT_STATUS_INTERNAL_DB_ERROR;
 324         }
 325
 326         talloc_free(tmp_mem);
 327
 328         return NT_STATUS_OK;
 329
 330 failure:
 331         ldb_transaction_cancel(ldb);
 332         talloc_free(tmp_mem);
 333
 334         PyErr_Print();
 335         PyErr_Clear();
 336         return NT_STATUS_UNSUCCESSFUL;
 337 }
 338
 339
 340 struct ldb_context *provision_get_schema(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx,
 341                                          DATA_BLOB *override_prefixmap)
 342 {
 343         const char *setupdir;
 344         PyObject *schema_mod, *schema_dict, *schema_fn, *py_result, *parameters;
 345
 346         DEBUG(0,("Schema for DRS tests using python\n"));
 347
 348         Py_Initialize();
 349         py_update_path("bin"); /* FIXME: Can't assume this is always the case */
 350
 351         schema_mod = schema_module();
 352
 353         if (schema_mod == NULL) {
 354                 PyErr_Print();
 355                 DEBUG(0, ("Unable to import schema Python module.\n"));
 356                 return NULL;
 357         }
 358
 359         schema_dict = PyModule_GetDict(schema_mod);
 360
 361         if (schema_dict == NULL) {
 362                 DEBUG(0, ("Unable to get dictionary for schema module\n"));
 363                 return NULL;
 364         }
 365
 366         schema_fn = PyDict_GetItemString(schema_dict, "ldb_with_schema");
 367         if (schema_fn == NULL) {
 368                 PyErr_Print();
 369                 DEBUG(0, ("Unable to get schema_get_ldb function\n"));
 370                 return NULL;
 371         }
 372
 373         parameters = PyDict_New();
 374
 375         setupdir = lpcfg_setupdir(lp_ctx);
 376         PyDict_SetItemString(parameters, "setup_dir",
 377                              PyString_FromString(setupdir));
 378         if (override_prefixmap) {
 379                 PyDict_SetItemString(parameters, "override_prefixmap",
 380                                      PyString_FromStringAndSize((const char *)override_prefixmap->data,
 381                                                                 override_prefixmap->length));
 382         }
 383
 384         py_result = PyEval_CallObjectWithKeywords(schema_fn, NULL, parameters);
 385
 386         Py_DECREF(parameters);
 387
 388         if (py_result == NULL) {
 389                 PyErr_Print();
 390                 PyErr_Clear();
 391                 return NULL;
 392         }
 393
 394         return PyLdb_AsLdbContext(PyObject_GetAttrString(py_result, "ldb"));
 395 }