source4/libnet/py_net.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4
   5    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2010
   6    Copyright (C) Kamen Mazdrashki <kamen.mazdrashki@postpath.com> 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include <Python.h>
  23 #include "python/py3compat.h"
  24 #include "includes.h"
  25 #include <pyldb.h>
  26 #include <pytalloc.h>
  27 #include "libnet.h"
  28 #include "auth/credentials/pycredentials.h"
  29 #include "libcli/security/security.h"
  30 #include "lib/events/events.h"
  31 #include "param/pyparam.h"
  32 #include "auth/gensec/gensec.h"
  33 #include "librpc/rpc/pyrpc_util.h"
  34 #include "libcli/resolve/resolve.h"
  35 #include "libcli/finddc.h"
  36 #include "dsdb/samdb/samdb.h"
  37 #include "py_net.h"
  38 #include "librpc/rpc/pyrpc_util.h"
  39 #include "libcli/drsuapi/drsuapi.h"
  40
  41 static void PyErr_SetDsExtendedError(enum drsuapi_DsExtendedError ext_err, const char *error_description)
  42 {
  43         PyObject *error = PyObject_GetAttrString(PyImport_ImportModule("samba"),
  44                                                  "DsExtendedError");
  45         if (error_description == NULL) {
  46                 switch (ext_err) {
  47                         /* Copied out of ndr_drsuapi.c:ndr_print_drsuapi_DsExtendedError() */
  48                         case DRSUAPI_EXOP_ERR_NONE:
  49                                 error_description = "DRSUAPI_EXOP_ERR_NONE";
  50                                 break;
  51                         case DRSUAPI_EXOP_ERR_SUCCESS:
  52                                 error_description = "DRSUAPI_EXOP_ERR_SUCCESS";
  53                                 break;
  54                         case DRSUAPI_EXOP_ERR_UNKNOWN_OP:
  55                                 error_description = "DRSUAPI_EXOP_ERR_UNKNOWN_OP";
  56                                 break;
  57                         case DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER:
  58                                 error_description = "DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER";
  59                                 break;
  60                         case DRSUAPI_EXOP_ERR_UPDATE_ERR:
  61                                 error_description = "DRSUAPI_EXOP_ERR_UPDATE_ERR";
  62                                 break;
  63                         case DRSUAPI_EXOP_ERR_EXCEPTION:
  64                                 error_description = "DRSUAPI_EXOP_ERR_EXCEPTION";
  65                                 break;
  66                         case DRSUAPI_EXOP_ERR_UNKNOWN_CALLER:
  67                                 error_description = "DRSUAPI_EXOP_ERR_UNKNOWN_CALLER";
  68                                 break;
  69                         case DRSUAPI_EXOP_ERR_RID_ALLOC:
  70                                 error_description = "DRSUAPI_EXOP_ERR_RID_ALLOC";
  71                                 break;
  72                         case DRSUAPI_EXOP_ERR_FSMO_OWNER_DELETED:
  73                                 error_description = "DRSUAPI_EXOP_ERR_FSMO_OWNER_DELETED";
  74                                 break;
  75                         case DRSUAPI_EXOP_ERR_FMSO_PENDING_OP:
  76                                 error_description = "DRSUAPI_EXOP_ERR_FMSO_PENDING_OP";
  77                                 break;
  78                         case DRSUAPI_EXOP_ERR_MISMATCH:
  79                                 error_description = "DRSUAPI_EXOP_ERR_MISMATCH";
  80                                 break;
  81                         case DRSUAPI_EXOP_ERR_COULDNT_CONTACT:
  82                                 error_description = "DRSUAPI_EXOP_ERR_COULDNT_CONTACT";
  83                                 break;
  84                         case DRSUAPI_EXOP_ERR_FSMO_REFUSING_ROLES:
  85                                 error_description = "DRSUAPI_EXOP_ERR_FSMO_REFUSING_ROLES";
  86                                 break;
  87                         case DRSUAPI_EXOP_ERR_DIR_ERROR:
  88                                 error_description = "DRSUAPI_EXOP_ERR_DIR_ERROR";
  89                                 break;
  90                         case DRSUAPI_EXOP_ERR_FSMO_MISSING_SETTINGS:
  91                                 error_description = "DRSUAPI_EXOP_ERR_FSMO_MISSING_SETTINGS";
  92                                 break;
  93                         case DRSUAPI_EXOP_ERR_ACCESS_DENIED:
  94                                 error_description = "DRSUAPI_EXOP_ERR_ACCESS_DENIED";
  95                                 break;
  96                         case DRSUAPI_EXOP_ERR_PARAM_ERROR:
  97                                 error_description = "DRSUAPI_EXOP_ERR_PARAM_ERROR";
  98                                 break;
  99                 }
 100         }
 101         PyErr_SetObject(error,
 102                         Py_BuildValue(discard_const_p(char, "(i,s)"),
 103                                       ext_err,
 104                                       error_description));
 105 }
 106
 107 static PyObject *py_net_join_member(py_net_Object *self, PyObject *args, PyObject *kwargs)
 108 {
 109         struct libnet_Join_member r;
 110         int _level = 0;
 111         NTSTATUS status;
 112         PyObject *result;
 113         TALLOC_CTX *mem_ctx;
 114         const char *kwnames[] = { "domain_name", "netbios_name", "level", "machinepass", NULL };
 115
 116         ZERO_STRUCT(r);
 117
 118         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ssi|z:Join", discard_const_p(char *, kwnames),
 119                                          &r.in.domain_name, &r.in.netbios_name,
 120                                          &_level,
 121                                          &r.in.account_pass)) {
 122                 return NULL;
 123         }
 124         r.in.level = _level;
 125
 126         mem_ctx = talloc_new(self->mem_ctx);
 127         if (mem_ctx == NULL) {
 128                 PyErr_NoMemory();
 129                 return NULL;
 130         }
 131
 132         status = libnet_Join_member(self->libnet_ctx, mem_ctx, &r);
 133         if (NT_STATUS_IS_ERR(status)) {
 134                 PyErr_SetNTSTATUS_and_string(status,
 135                                              r.out.error_string
 136                                              ? r.out.error_string
 137                                              : nt_errstr(status));
 138                 talloc_free(mem_ctx);
 139                 return NULL;
 140         }
 141
 142         result = Py_BuildValue("sss", r.out.join_password,
 143                                dom_sid_string(mem_ctx, r.out.domain_sid),
 144                                r.out.domain_name);
 145
 146         talloc_free(mem_ctx);
 147
 148         return result;
 149 }
 150
 151 static const char py_net_join_member_doc[] = "join_member(domain_name, netbios_name, level) -> (join_password, domain_sid, domain_name)\n\n" \
 152 "Join the domain with the specified name.";
 153
 154 static PyObject *py_net_change_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
 155 {
 156         union libnet_ChangePassword r;
 157         NTSTATUS status;
 158         TALLOC_CTX *mem_ctx;
 159         struct tevent_context *ev;
 160         const char *kwnames[] = { "newpassword", "oldpassword", "domain", "username", NULL };
 161
 162         ZERO_STRUCT(r);
 163
 164         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|sss:change_password",
 165                                          discard_const_p(char *, kwnames),
 166                                          &r.generic.in.newpassword,
 167                                          &r.generic.in.oldpassword,
 168                                          &r.generic.in.domain_name,
 169                                          &r.generic.in.account_name)) {
 170                 return NULL;
 171         }
 172
 173         r.generic.level = LIBNET_CHANGE_PASSWORD_GENERIC;
 174         if (r.generic.in.account_name == NULL) {
 175                 r.generic.in.account_name
 176                         = cli_credentials_get_username(self->libnet_ctx->cred);
 177         }
 178         if (r.generic.in.domain_name == NULL) {
 179                 r.generic.in.domain_name
 180                         = cli_credentials_get_domain(self->libnet_ctx->cred);
 181         }
 182         if (r.generic.in.oldpassword == NULL) {
 183                 r.generic.in.oldpassword
 184                         = cli_credentials_get_password(self->libnet_ctx->cred);
 185         }
 186
 187         /* FIXME: we really need to get a context from the caller or we may end
 188          * up with 2 event contexts */
 189         ev = s4_event_context_init(NULL);
 190
 191         mem_ctx = talloc_new(ev);
 192         if (mem_ctx == NULL) {
 193                 PyErr_NoMemory();
 194                 return NULL;
 195         }
 196
 197         status = libnet_ChangePassword(self->libnet_ctx, mem_ctx, &r);
 198         if (NT_STATUS_IS_ERR(status)) {
 199                 PyErr_SetNTSTATUS_and_string(status,
 200                                              r.generic.out.error_string
 201                                              ? r.generic.out.error_string
 202                                              : nt_errstr(status));
 203                 talloc_free(mem_ctx);
 204                 return NULL;
 205         }
 206
 207         talloc_free(mem_ctx);
 208
 209         Py_RETURN_NONE;
 210 }
 211
 212 static const char py_net_change_password_doc[] = "change_password(newpassword) -> True\n\n" \
 213 "Change password for a user. You must supply credential with enough rights to do this.\n\n" \
 214 "Sample usage is:\n" \
 215 "net.change_password(newpassword=<new_password>)\n";
 216
 217
 218 static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
 219 {
 220         union libnet_SetPassword r;
 221         NTSTATUS status;
 222         TALLOC_CTX *mem_ctx;
 223         struct tevent_context *ev;
 224         const char *kwnames[] = { "account_name", "domain_name", "newpassword", NULL };
 225
 226         ZERO_STRUCT(r);
 227
 228         r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
 229
 230         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sss:set_password",
 231                                         discard_const_p(char *, kwnames),
 232                                          &r.generic.in.account_name,
 233                                          &r.generic.in.domain_name,
 234                                          &r.generic.in.newpassword)) {
 235                 return NULL;
 236         }
 237
 238         /* FIXME: we really need to get a context from the caller or we may end
 239          * up with 2 event contexts */
 240         ev = s4_event_context_init(NULL);
 241
 242         mem_ctx = talloc_new(ev);
 243         if (mem_ctx == NULL) {
 244                 PyErr_NoMemory();
 245                 return NULL;
 246         }
 247
 248         status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
 249         if (NT_STATUS_IS_ERR(status)) {
 250                 PyErr_SetNTSTATUS_and_string(status,
 251                                              r.generic.out.error_string
 252                                              ? r.generic.out.error_string
 253                                              : nt_errstr(status));
 254                 talloc_free(mem_ctx);
 255                 return NULL;
 256         }
 257
 258         talloc_free(mem_ctx);
 259
 260         Py_RETURN_NONE;
 261 }
 262
 263 static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
 264 "Set password for a user. You must supply credential with enough rights to do this.\n\n" \
 265 "Sample usage is:\n" \
 266 "net.set_password(account_name=account_name, domain_name=domain_name, newpassword=new_pass)\n";
 267
 268
 269 static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
 270 {
 271         const char *kwnames[] = { "server_name", NULL };
 272         union libnet_RemoteTOD r;
 273         NTSTATUS status;
 274         TALLOC_CTX *mem_ctx;
 275         char timestr[64];
 276         PyObject *ret;
 277         struct tm *tm;
 278
 279         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
 280                 discard_const_p(char *, kwnames), &r.generic.in.server_name))
 281                 return NULL;
 282
 283         r.generic.level                 = LIBNET_REMOTE_TOD_GENERIC;
 284
 285         mem_ctx = talloc_new(NULL);
 286         if (mem_ctx == NULL) {
 287                 PyErr_NoMemory();
 288                 return NULL;
 289         }
 290
 291         status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
 292         if (!NT_STATUS_IS_OK(status)) {
 293                 PyErr_SetNTSTATUS_and_string(status,
 294                                              r.generic.out.error_string
 295                                              ? r.generic.out.error_string
 296                                              : nt_errstr(status));
 297                 talloc_free(mem_ctx);
 298                 return NULL;
 299         }
 300
 301         ZERO_STRUCT(timestr);
 302         tm = localtime(&r.generic.out.time);
 303         strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
 304
 305         ret = PyStr_FromString(timestr);
 306
 307         talloc_free(mem_ctx);
 308
 309         return ret;
 310 }
 311
 312 static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
 313 "Retrieve the remote time on a server";
 314
 315 static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
 316 {
 317         const char *kwnames[] = { "username", NULL };
 318         NTSTATUS status;
 319         TALLOC_CTX *mem_ctx;
 320         struct libnet_CreateUser r;
 321
 322         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 323                                                                          &r.in.user_name))
 324                 return NULL;
 325
 326         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 327
 328         mem_ctx = talloc_new(NULL);
 329         if (mem_ctx == NULL) {
 330                 PyErr_NoMemory();
 331                 return NULL;
 332         }
 333
 334         status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
 335         if (!NT_STATUS_IS_OK(status)) {
 336                 PyErr_SetNTSTATUS_and_string(status,
 337                                              r.out.error_string
 338                                              ? r.out.error_string
 339                                              : nt_errstr(status));
 340                 talloc_free(mem_ctx);
 341                 return NULL;
 342         }
 343
 344         talloc_free(mem_ctx);
 345
 346         Py_RETURN_NONE;
 347 }
 348
 349 static const char py_net_create_user_doc[] = "create_user(username)\n"
 350 "Create a new user.";
 351
 352 static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
 353 {
 354         const char *kwnames[] = { "username", NULL };
 355         NTSTATUS status;
 356         TALLOC_CTX *mem_ctx;
 357         struct libnet_DeleteUser r;
 358
 359         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 360                                                                          &r.in.user_name))
 361                 return NULL;
 362
 363         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 364
 365         mem_ctx = talloc_new(NULL);
 366         if (mem_ctx == NULL) {
 367                 PyErr_NoMemory();
 368                 return NULL;
 369         }
 370
 371         status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
 372         if (!NT_STATUS_IS_OK(status)) {
 373                 PyErr_SetNTSTATUS_and_string(status,
 374                                            r.out.error_string
 375                                           ? r.out.error_string
 376                                           : nt_errstr(status));
 377                 talloc_free(mem_ctx);
 378                 return NULL;
 379         }
 380
 381         talloc_free(mem_ctx);
 382
 383         Py_RETURN_NONE;
 384 }
 385
 386 static const char py_net_delete_user_doc[] = "delete_user(username)\n"
 387 "Delete a user.";
 388
 389 struct replicate_state {
 390         void *vampire_state;
 391         dcerpc_InterfaceObject *drs_pipe;
 392         struct libnet_BecomeDC_StoreChunk chunk;
 393         DATA_BLOB gensec_skey;
 394         struct libnet_BecomeDC_Partition partition;
 395         struct libnet_BecomeDC_Forest forest;
 396         struct libnet_BecomeDC_DestDSA dest_dsa;
 397 };
 398
 399 /*
 400   setup for replicate_chunk() calls
 401  */
 402 static PyObject *py_net_replicate_init(py_net_Object *self, PyObject *args, PyObject *kwargs)
 403 {
 404         const char *kwnames[] = { "samdb", "lp", "drspipe", "invocation_id", NULL };
 405         PyObject *py_ldb, *py_lp, *py_drspipe, *py_invocation_id;
 406         struct ldb_context *samdb;
 407         struct loadparm_context *lp;
 408         struct replicate_state *s;
 409         NTSTATUS status;
 410
 411         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOOO",
 412                                          discard_const_p(char *, kwnames),
 413                                          &py_ldb, &py_lp, &py_drspipe,
 414                                          &py_invocation_id)) {
 415                 return NULL;
 416         }
 417
 418         s = talloc_zero(NULL, struct replicate_state);
 419         if (!s) return NULL;
 420
 421         lp = lpcfg_from_py_object(s, py_lp);
 422         if (lp == NULL) {
 423                 PyErr_SetString(PyExc_TypeError, "Expected lp object");
 424                 talloc_free(s);
 425                 return NULL;
 426         }
 427
 428         samdb = pyldb_Ldb_AsLdbContext(py_ldb);
 429         if (samdb == NULL) {
 430                 PyErr_SetString(PyExc_TypeError, "Expected ldb object");
 431                 talloc_free(s);
 432                 return NULL;
 433         }
 434         if (!py_check_dcerpc_type(py_invocation_id, "samba.dcerpc.misc", "GUID")) {
 435
 436                 talloc_free(s);
 437                 return NULL;
 438         }
 439         s->dest_dsa.invocation_id = *pytalloc_get_type(py_invocation_id, struct GUID);
 440
 441         s->drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 442
 443         s->vampire_state = libnet_vampire_replicate_init(s, samdb, lp);
 444         if (s->vampire_state == NULL) {
 445                 PyErr_SetString(PyExc_TypeError, "Failed to initialise vampire_state");
 446                 talloc_free(s);
 447                 return NULL;
 448         }
 449
 450         status = gensec_session_key(s->drs_pipe->pipe->conn->security_state.generic_state,
 451                                     s,
 452                                     &s->gensec_skey);
 453         if (!NT_STATUS_IS_OK(status)) {
 454                 char *error_string = talloc_asprintf(s,
 455                                                      "Unable to get session key from drspipe: %s",
 456                                                      nt_errstr(status));
 457                 PyErr_SetNTSTATUS_and_string(status, error_string);
 458                 talloc_free(s);
 459                 return NULL;
 460         }
 461
 462         s->forest.dns_name = samdb_dn_to_dns_domain(s, ldb_get_root_basedn(samdb));
 463         s->forest.root_dn_str = ldb_dn_get_linearized(ldb_get_root_basedn(samdb));
 464         s->forest.config_dn_str = ldb_dn_get_linearized(ldb_get_config_basedn(samdb));
 465         s->forest.schema_dn_str = ldb_dn_get_linearized(ldb_get_schema_basedn(samdb));
 466
 467         s->chunk.gensec_skey = &s->gensec_skey;
 468         s->chunk.partition = &s->partition;
 469         s->chunk.forest = &s->forest;
 470         s->chunk.dest_dsa = &s->dest_dsa;
 471
 472         return pytalloc_GenericObject_steal(s);
 473 }
 474
 475
 476 /*
 477   process one replication chunk
 478  */
 479 static PyObject *py_net_replicate_chunk(py_net_Object *self, PyObject *args, PyObject *kwargs)
 480 {
 481         const char *kwnames[] = { "state", "level", "ctr",
 482                                   "schema", "req_level", "req",
 483                                   NULL };
 484         PyObject *py_state, *py_ctr, *py_schema = Py_None, *py_req = Py_None;
 485         struct replicate_state *s;
 486         unsigned level;
 487         unsigned req_level = 0;
 488         WERROR (*chunk_handler)(void *private_data, const struct libnet_BecomeDC_StoreChunk *c);
 489         WERROR werr;
 490         enum drsuapi_DsExtendedError extended_ret = DRSUAPI_EXOP_ERR_NONE;
 491         enum drsuapi_DsExtendedOperation exop = DRSUAPI_EXOP_NONE;
 492
 493         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OIO|OIO",
 494                                          discard_const_p(char *, kwnames),
 495                                          &py_state, &level, &py_ctr,
 496                                          &py_schema, &req_level, &py_req)) {
 497                 return NULL;
 498         }
 499
 500         s = pytalloc_get_type(py_state, struct replicate_state);
 501         if (!s) {
 502                 return NULL;
 503         }
 504
 505         switch (level) {
 506         case 1:
 507                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr1")) {
 508                         return NULL;
 509                 }
 510                 s->chunk.ctr1                         = pytalloc_get_ptr(py_ctr);
 511                 if (s->chunk.ctr1->naming_context != NULL) {
 512                         s->partition.nc = *s->chunk.ctr1->naming_context;
 513                 }
 514                 extended_ret = s->chunk.ctr1->extended_ret;
 515                 s->partition.more_data                = s->chunk.ctr1->more_data;
 516                 s->partition.source_dsa_guid          = s->chunk.ctr1->source_dsa_guid;
 517                 s->partition.source_dsa_invocation_id = s->chunk.ctr1->source_dsa_invocation_id;
 518                 s->partition.highwatermark            = s->chunk.ctr1->new_highwatermark;
 519                 break;
 520         case 6:
 521                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr6")) {
 522                         return NULL;
 523                 }
 524                 s->chunk.ctr6                         = pytalloc_get_ptr(py_ctr);
 525                 if (s->chunk.ctr6->naming_context != NULL) {
 526                         s->partition.nc = *s->chunk.ctr6->naming_context;
 527                 }
 528                 extended_ret = s->chunk.ctr6->extended_ret;
 529                 s->partition.more_data                = s->chunk.ctr6->more_data;
 530                 s->partition.source_dsa_guid          = s->chunk.ctr6->source_dsa_guid;
 531                 s->partition.source_dsa_invocation_id = s->chunk.ctr6->source_dsa_invocation_id;
 532                 s->partition.highwatermark            = s->chunk.ctr6->new_highwatermark;
 533                 break;
 534         default:
 535                 PyErr_Format(PyExc_TypeError, "Bad level %u in replicate_chunk", level);
 536                 return NULL;
 537         }
 538
 539         s->chunk.req5 = NULL;
 540         s->chunk.req8 = NULL;
 541         s->chunk.req10 = NULL;
 542         if (py_req) {
 543                 switch (req_level) {
 544                 case 0:
 545                         break;
 546                 case 5:
 547                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest5")) {
 548                                 return NULL;
 549                         }
 550
 551                         s->chunk.req5 = pytalloc_get_ptr(py_req);
 552                         exop = s->chunk.req5->extended_op;
 553                         break;
 554                 case 8:
 555                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest8")) {
 556                                 return NULL;
 557                         }
 558
 559                         s->chunk.req8 = pytalloc_get_ptr(py_req);
 560                         exop = s->chunk.req8->extended_op;
 561                         break;
 562                 case 10:
 563                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest10")) {
 564                                 return NULL;
 565                         }
 566
 567                         s->chunk.req10 = pytalloc_get_ptr(py_req);
 568                         exop = s->chunk.req10->extended_op;
 569                         break;
 570                 default:
 571                         PyErr_Format(PyExc_TypeError, "Bad req_level %u in replicate_chunk", req_level);
 572                         return NULL;
 573                 }
 574         }
 575
 576         if (exop != DRSUAPI_EXOP_NONE && extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
 577                 PyErr_SetDsExtendedError(extended_ret, NULL);
 578                 return NULL;
 579         }
 580
 581         s->chunk.req_level = req_level;
 582
 583         chunk_handler = libnet_vampire_cb_store_chunk;
 584         if (py_schema) {
 585                 if (!PyBool_Check(py_schema)) {
 586                         PyErr_SetString(PyExc_TypeError, "Expected boolean schema");
 587                         return NULL;
 588                 }
 589                 if (py_schema == Py_True) {
 590                         chunk_handler = libnet_vampire_cb_schema_chunk;
 591                 }
 592         }
 593
 594         s->chunk.ctr_level = level;
 595
 596         werr = chunk_handler(s->vampire_state, &s->chunk);
 597         if (!W_ERROR_IS_OK(werr)) {
 598                 char *error_string
 599                         = talloc_asprintf(NULL,
 600                                           "Failed to process 'chunk' of DRS replicated objects: %s",
 601                                           win_errstr(werr));
 602                 PyErr_SetWERROR_and_string(werr, error_string);
 603                 TALLOC_FREE(error_string);
 604                 return NULL;
 605         }
 606
 607         Py_RETURN_NONE;
 608 }
 609
 610
 611 /*
 612   just do the decryption of a DRS replicated attribute
 613  */
 614 static PyObject *py_net_replicate_decrypt(py_net_Object *self, PyObject *args, PyObject *kwargs)
 615 {
 616         const char *kwnames[] = { "drspipe", "attribute", "rid", NULL };
 617         PyObject *py_drspipe, *py_attribute;
 618         NTSTATUS status;
 619         dcerpc_InterfaceObject *drs_pipe;
 620         TALLOC_CTX *frame;
 621         TALLOC_CTX *context;
 622         DATA_BLOB gensec_skey;
 623         unsigned int rid;
 624         struct drsuapi_DsReplicaAttribute *attribute;
 625         WERROR werr;
 626
 627         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOI",
 628                                          discard_const_p(char *, kwnames),
 629                                          &py_drspipe,
 630                                          &py_attribute, &rid)) {
 631                 return NULL;
 632         }
 633
 634         frame = talloc_stackframe();
 635
 636         if (!py_check_dcerpc_type(py_drspipe,
 637                                   "samba.dcerpc.base",
 638                                   "ClientConnection")) {
 639                 return NULL;
 640         }
 641         drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 642
 643         status = gensec_session_key(drs_pipe->pipe->conn->security_state.generic_state,
 644                                     frame,
 645                                     &gensec_skey);
 646         if (!NT_STATUS_IS_OK(status)) {
 647                 char *error_string
 648                         = talloc_asprintf(frame,
 649                                           "Unable to get session key from drspipe: %s",
 650                                           nt_errstr(status));
 651                 PyErr_SetNTSTATUS_and_string(status, error_string);
 652                 talloc_free(frame);
 653                 return NULL;
 654         }
 655
 656         if (!py_check_dcerpc_type(py_attribute, "samba.dcerpc.drsuapi",
 657                                   "DsReplicaAttribute")) {
 658                 return NULL;
 659         }
 660
 661         attribute = pytalloc_get_ptr(py_attribute);
 662         context   = pytalloc_get_mem_ctx(py_attribute);
 663         werr = drsuapi_decrypt_attribute(context, &gensec_skey,
 664                                          rid, 0, attribute);
 665         if (!W_ERROR_IS_OK(werr)) {
 666                 char *error_string = talloc_asprintf(frame,
 667                                                      "Unable to get decrypt attribute: %s",
 668                                                      win_errstr(werr));
 669                 PyErr_SetWERROR_and_string(werr, error_string);
 670                 talloc_free(frame);
 671                 return NULL;
 672         }
 673
 674         talloc_free(frame);
 675
 676         Py_RETURN_NONE;
 677
 678 }
 679
 680 /*
 681   find a DC given a domain name and server type
 682  */
 683 static PyObject *py_net_finddc(py_net_Object *self, PyObject *args, PyObject *kwargs)
 684 {
 685         const char *domain = NULL, *address = NULL;
 686         unsigned server_type;
 687         NTSTATUS status;
 688         struct finddcs *io;
 689         TALLOC_CTX *mem_ctx;
 690         PyObject *ret;
 691         const char * const kwnames[] = { "flags", "domain", "address", NULL };
 692
 693         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "I|zz",
 694                                          discard_const_p(char *, kwnames),
 695                                          &server_type, &domain, &address)) {
 696                 return NULL;
 697         }
 698
 699         mem_ctx = talloc_new(self->mem_ctx);
 700
 701         io = talloc_zero(mem_ctx, struct finddcs);
 702         if (domain != NULL) {
 703                 io->in.domain_name = domain;
 704         }
 705         if (address != NULL) {
 706                 io->in.server_address = address;
 707         }
 708         io->in.minimum_dc_flags = server_type;
 709
 710         status = finddcs_cldap(io, io,
 711                                lpcfg_resolve_context(self->libnet_ctx->lp_ctx), self->ev);
 712         if (NT_STATUS_IS_ERR(status)) {
 713                 PyErr_SetNTSTATUS(status);
 714                 talloc_free(mem_ctx);
 715                 return NULL;
 716         }
 717
 718         ret = py_return_ndr_struct("samba.dcerpc.nbt", "NETLOGON_SAM_LOGON_RESPONSE_EX",
 719                                    io, &io->out.netlogon.data.nt5_ex);
 720         talloc_free(mem_ctx);
 721
 722         return ret;
 723 }
 724
 725
 726 static const char py_net_replicate_init_doc[] = "replicate_init(samdb, lp, drspipe)\n"
 727                                          "Setup for replicate_chunk calls.";
 728
 729 static const char py_net_replicate_chunk_doc[] = "replicate_chunk(state, level, ctr, schema)\n"
 730                                          "Process replication for one chunk";
 731
 732 static const char py_net_replicate_decrypt_doc[] = "replicate_decrypt(drs, attribute, rid)\n"
 733                                          "Decrypt (in place) a DsReplicaAttribute replicated with drs.GetNCChanges()";
 734
 735 static const char py_net_finddc_doc[] = "finddc(flags=server_type, domain=None, address=None)\n"
 736                                          "Find a DC with the specified 'server_type' bits. The 'domain' and/or 'address' have to be used as additional search criteria. Returns the whole netlogon struct";
 737
 738 static PyMethodDef net_obj_methods[] = {
 739         {"join_member", (PyCFunction)py_net_join_member, METH_VARARGS|METH_KEYWORDS, py_net_join_member_doc},
 740         {"change_password", (PyCFunction)py_net_change_password, METH_VARARGS|METH_KEYWORDS, py_net_change_password_doc},
 741         {"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
 742         {"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
 743         {"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
 744         {"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
 745         {"replicate_init", (PyCFunction)py_net_replicate_init, METH_VARARGS|METH_KEYWORDS, py_net_replicate_init_doc},
 746         {"replicate_chunk", (PyCFunction)py_net_replicate_chunk, METH_VARARGS|METH_KEYWORDS, py_net_replicate_chunk_doc},
 747         {"replicate_decrypt", (PyCFunction)py_net_replicate_decrypt, METH_VARARGS|METH_KEYWORDS, py_net_replicate_decrypt_doc},
 748         {"finddc", (PyCFunction)py_net_finddc, METH_VARARGS|METH_KEYWORDS, py_net_finddc_doc},
 749         { NULL }
 750 };
 751
 752 static void py_net_dealloc(py_net_Object *self)
 753 {
 754         talloc_free(self->mem_ctx);
 755         PyObject_Del(self);
 756 }
 757
 758 static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 759 {
 760         PyObject *py_creds, *py_lp = Py_None;
 761         const char *kwnames[] = { "creds", "lp", "server", NULL };
 762         py_net_Object *ret;
 763         struct loadparm_context *lp;
 764         const char *server_address = NULL;
 765
 766         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Oz",
 767                                          discard_const_p(char *, kwnames), &py_creds, &py_lp,
 768                                          &server_address))
 769                 return NULL;
 770
 771         ret = PyObject_New(py_net_Object, type);
 772         if (ret == NULL) {
 773                 return NULL;
 774         }
 775
 776         /* FIXME: we really need to get a context from the caller or we may end
 777          * up with 2 event contexts */
 778         ret->ev = s4_event_context_init(NULL);
 779         ret->mem_ctx = talloc_new(ret->ev);
 780
 781         lp = lpcfg_from_py_object(ret->mem_ctx, py_lp);
 782         if (lp == NULL) {
 783                 Py_DECREF(ret);
 784                 return NULL;
 785         }
 786
 787         ret->libnet_ctx = libnet_context_init(ret->ev, lp);
 788         if (ret->libnet_ctx == NULL) {
 789                 PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
 790                 Py_DECREF(ret);
 791                 return NULL;
 792         }
 793
 794         ret->libnet_ctx->server_address = server_address;
 795
 796         ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
 797         if (ret->libnet_ctx->cred == NULL) {
 798                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 799                 Py_DECREF(ret);
 800                 return NULL;
 801         }
 802
 803         return (PyObject *)ret;
 804 }
 805
 806
 807 PyTypeObject py_net_Type = {
 808         PyVarObject_HEAD_INIT(NULL, 0)
 809         .tp_name = "net.Net",
 810         .tp_basicsize = sizeof(py_net_Object),
 811         .tp_dealloc = (destructor)py_net_dealloc,
 812         .tp_methods = net_obj_methods,
 813         .tp_new = net_obj_new,
 814 };
 815
 816 static struct PyModuleDef moduledef = {
 817         PyModuleDef_HEAD_INIT,
 818         .m_name = "net",
 819         .m_size = -1,
 820 };
 821
 822 MODULE_INIT_FUNC(net)
 823 {
 824         PyObject *m;
 825
 826         if (PyType_Ready(&py_net_Type) < 0)
 827                 return NULL;
 828
 829         m = PyModule_Create(&moduledef);
 830         if (m == NULL)
 831                 return NULL;
 832
 833         Py_INCREF(&py_net_Type);
 834         PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
 835         PyModule_AddIntConstant(m, "LIBNET_JOINDOMAIN_AUTOMATIC", LIBNET_JOINDOMAIN_AUTOMATIC);
 836         PyModule_AddIntConstant(m, "LIBNET_JOINDOMAIN_SPECIFIED", LIBNET_JOINDOMAIN_SPECIFIED);
 837         PyModule_AddIntConstant(m, "LIBNET_JOIN_AUTOMATIC", LIBNET_JOIN_AUTOMATIC);
 838         PyModule_AddIntConstant(m, "LIBNET_JOIN_SPECIFIED", LIBNET_JOIN_SPECIFIED);
 839
 840         return m;
 841 }