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 = NULL;
 159         struct tevent_context *ev = NULL;
 160         const char *kwnames[] = { "newpassword", "oldpassword", "domain", "username", NULL };
 161         const char *newpass = NULL;
 162         const char *oldpass = NULL;
 163         ZERO_STRUCT(r);
 164         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "es|esss:change_password",
 165                                          discard_const_p(char *, kwnames),
 166                                          "utf8",
 167                                          &newpass,
 168                                          "utf8",
 169                                          &oldpass,
 170                                          &r.generic.in.domain_name,
 171                                          &r.generic.in.account_name)) {
 172                 return NULL;
 173         }
 174
 175         r.generic.in.newpassword = newpass;
 176         r.generic.in.oldpassword = oldpass;
 177
 178         r.generic.level = LIBNET_CHANGE_PASSWORD_GENERIC;
 179         if (r.generic.in.account_name == NULL) {
 180                 r.generic.in.account_name
 181                         = cli_credentials_get_username(self->libnet_ctx->cred);
 182         }
 183         if (r.generic.in.domain_name == NULL) {
 184                 r.generic.in.domain_name
 185                         = cli_credentials_get_domain(self->libnet_ctx->cred);
 186         }
 187         if (r.generic.in.oldpassword == NULL) {
 188                 r.generic.in.oldpassword
 189                         = cli_credentials_get_password(self->libnet_ctx->cred);
 190         }
 191
 192         /* FIXME: we really need to get a context from the caller or we may end
 193          * up with 2 event contexts */
 194         ev = s4_event_context_init(NULL);
 195
 196         mem_ctx = talloc_new(ev);
 197         if (mem_ctx == NULL) {
 198                 PyMem_Free(discard_const_p(char, newpass));
 199                 PyMem_Free(discard_const_p(char, oldpass));
 200                 PyErr_NoMemory();
 201                 return NULL;
 202         }
 203
 204         status = libnet_ChangePassword(self->libnet_ctx, mem_ctx, &r);
 205
 206         PyMem_Free(discard_const_p(char, newpass));
 207         PyMem_Free(discard_const_p(char, oldpass));
 208
 209         if (NT_STATUS_IS_ERR(status)) {
 210                 PyErr_SetNTSTATUS_and_string(status,
 211                                              r.generic.out.error_string
 212                                              ? r.generic.out.error_string
 213                                              : nt_errstr(status));
 214                 talloc_free(mem_ctx);
 215                 return NULL;
 216         }
 217
 218         talloc_free(mem_ctx);
 219         Py_RETURN_NONE;
 220 }
 221
 222 static const char py_net_change_password_doc[] = "change_password(newpassword) -> True\n\n" \
 223 "Change password for a user. You must supply credential with enough rights to do this.\n\n" \
 224 "Sample usage is:\n" \
 225 "net.change_password(newpassword=<new_password>)\n";
 226
 227
 228 static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
 229 {
 230         union libnet_SetPassword r;
 231         NTSTATUS status;
 232         TALLOC_CTX *mem_ctx;
 233         struct tevent_context *ev;
 234         const char *kwnames[] = { "account_name", "domain_name", "newpassword", NULL };
 235
 236         ZERO_STRUCT(r);
 237
 238         r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
 239
 240         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sss:set_password",
 241                                         discard_const_p(char *, kwnames),
 242                                          &r.generic.in.account_name,
 243                                          &r.generic.in.domain_name,
 244                                          &r.generic.in.newpassword)) {
 245                 return NULL;
 246         }
 247
 248         /* FIXME: we really need to get a context from the caller or we may end
 249          * up with 2 event contexts */
 250         ev = s4_event_context_init(NULL);
 251
 252         mem_ctx = talloc_new(ev);
 253         if (mem_ctx == NULL) {
 254                 PyErr_NoMemory();
 255                 return NULL;
 256         }
 257
 258         status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
 259         if (NT_STATUS_IS_ERR(status)) {
 260                 PyErr_SetNTSTATUS_and_string(status,
 261                                              r.generic.out.error_string
 262                                              ? r.generic.out.error_string
 263                                              : nt_errstr(status));
 264                 talloc_free(mem_ctx);
 265                 return NULL;
 266         }
 267
 268         talloc_free(mem_ctx);
 269
 270         Py_RETURN_NONE;
 271 }
 272
 273 static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
 274 "Set password for a user. You must supply credential with enough rights to do this.\n\n" \
 275 "Sample usage is:\n" \
 276 "net.set_password(account_name=account_name, domain_name=domain_name, newpassword=new_pass)\n";
 277
 278
 279 static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
 280 {
 281         const char *kwnames[] = { "server_name", NULL };
 282         union libnet_RemoteTOD r;
 283         NTSTATUS status;
 284         TALLOC_CTX *mem_ctx;
 285         char timestr[64];
 286         PyObject *ret;
 287         struct tm *tm;
 288
 289         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
 290                 discard_const_p(char *, kwnames), &r.generic.in.server_name))
 291                 return NULL;
 292
 293         r.generic.level                 = LIBNET_REMOTE_TOD_GENERIC;
 294
 295         mem_ctx = talloc_new(NULL);
 296         if (mem_ctx == NULL) {
 297                 PyErr_NoMemory();
 298                 return NULL;
 299         }
 300
 301         status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
 302         if (!NT_STATUS_IS_OK(status)) {
 303                 PyErr_SetNTSTATUS_and_string(status,
 304                                              r.generic.out.error_string
 305                                              ? r.generic.out.error_string
 306                                              : nt_errstr(status));
 307                 talloc_free(mem_ctx);
 308                 return NULL;
 309         }
 310
 311         ZERO_STRUCT(timestr);
 312         tm = localtime(&r.generic.out.time);
 313         strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
 314
 315         ret = PyStr_FromString(timestr);
 316
 317         talloc_free(mem_ctx);
 318
 319         return ret;
 320 }
 321
 322 static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
 323 "Retrieve the remote time on a server";
 324
 325 static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
 326 {
 327         const char *kwnames[] = { "username", NULL };
 328         NTSTATUS status;
 329         TALLOC_CTX *mem_ctx;
 330         struct libnet_CreateUser r;
 331
 332         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 333                                                                          &r.in.user_name))
 334                 return NULL;
 335
 336         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 337
 338         mem_ctx = talloc_new(NULL);
 339         if (mem_ctx == NULL) {
 340                 PyErr_NoMemory();
 341                 return NULL;
 342         }
 343
 344         status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
 345         if (!NT_STATUS_IS_OK(status)) {
 346                 PyErr_SetNTSTATUS_and_string(status,
 347                                              r.out.error_string
 348                                              ? r.out.error_string
 349                                              : nt_errstr(status));
 350                 talloc_free(mem_ctx);
 351                 return NULL;
 352         }
 353
 354         talloc_free(mem_ctx);
 355
 356         Py_RETURN_NONE;
 357 }
 358
 359 static const char py_net_create_user_doc[] = "create_user(username)\n"
 360 "Create a new user.";
 361
 362 static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
 363 {
 364         const char *kwnames[] = { "username", NULL };
 365         NTSTATUS status;
 366         TALLOC_CTX *mem_ctx;
 367         struct libnet_DeleteUser r;
 368
 369         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 370                                                                          &r.in.user_name))
 371                 return NULL;
 372
 373         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 374
 375         mem_ctx = talloc_new(NULL);
 376         if (mem_ctx == NULL) {
 377                 PyErr_NoMemory();
 378                 return NULL;
 379         }
 380
 381         status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
 382         if (!NT_STATUS_IS_OK(status)) {
 383                 PyErr_SetNTSTATUS_and_string(status,
 384                                            r.out.error_string
 385                                           ? r.out.error_string
 386                                           : nt_errstr(status));
 387                 talloc_free(mem_ctx);
 388                 return NULL;
 389         }
 390
 391         talloc_free(mem_ctx);
 392
 393         Py_RETURN_NONE;
 394 }
 395
 396 static const char py_net_delete_user_doc[] = "delete_user(username)\n"
 397 "Delete a user.";
 398
 399 struct replicate_state {
 400         void *vampire_state;
 401         dcerpc_InterfaceObject *drs_pipe;
 402         struct libnet_BecomeDC_StoreChunk chunk;
 403         DATA_BLOB gensec_skey;
 404         struct libnet_BecomeDC_Partition partition;
 405         struct libnet_BecomeDC_Forest forest;
 406         struct libnet_BecomeDC_DestDSA dest_dsa;
 407 };
 408
 409 /*
 410   setup for replicate_chunk() calls
 411  */
 412 static PyObject *py_net_replicate_init(py_net_Object *self, PyObject *args, PyObject *kwargs)
 413 {
 414         const char *kwnames[] = { "samdb", "lp", "drspipe", "invocation_id", NULL };
 415         PyObject *py_ldb, *py_lp, *py_drspipe, *py_invocation_id;
 416         struct ldb_context *samdb;
 417         struct loadparm_context *lp;
 418         struct replicate_state *s;
 419         NTSTATUS status;
 420
 421         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOOO",
 422                                          discard_const_p(char *, kwnames),
 423                                          &py_ldb, &py_lp, &py_drspipe,
 424                                          &py_invocation_id)) {
 425                 return NULL;
 426         }
 427
 428         s = talloc_zero(NULL, struct replicate_state);
 429         if (!s) return NULL;
 430
 431         lp = lpcfg_from_py_object(s, py_lp);
 432         if (lp == NULL) {
 433                 PyErr_SetString(PyExc_TypeError, "Expected lp object");
 434                 talloc_free(s);
 435                 return NULL;
 436         }
 437
 438         samdb = pyldb_Ldb_AsLdbContext(py_ldb);
 439         if (samdb == NULL) {
 440                 PyErr_SetString(PyExc_TypeError, "Expected ldb object");
 441                 talloc_free(s);
 442                 return NULL;
 443         }
 444         if (!py_check_dcerpc_type(py_invocation_id, "samba.dcerpc.misc", "GUID")) {
 445
 446                 talloc_free(s);
 447                 return NULL;
 448         }
 449         s->dest_dsa.invocation_id = *pytalloc_get_type(py_invocation_id, struct GUID);
 450
 451         s->drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 452
 453         s->vampire_state = libnet_vampire_replicate_init(s, samdb, lp);
 454         if (s->vampire_state == NULL) {
 455                 PyErr_SetString(PyExc_TypeError, "Failed to initialise vampire_state");
 456                 talloc_free(s);
 457                 return NULL;
 458         }
 459
 460         status = gensec_session_key(s->drs_pipe->pipe->conn->security_state.generic_state,
 461                                     s,
 462                                     &s->gensec_skey);
 463         if (!NT_STATUS_IS_OK(status)) {
 464                 char *error_string = talloc_asprintf(s,
 465                                                      "Unable to get session key from drspipe: %s",
 466                                                      nt_errstr(status));
 467                 PyErr_SetNTSTATUS_and_string(status, error_string);
 468                 talloc_free(s);
 469                 return NULL;
 470         }
 471
 472         s->forest.dns_name = samdb_dn_to_dns_domain(s, ldb_get_root_basedn(samdb));
 473         s->forest.root_dn_str = ldb_dn_get_linearized(ldb_get_root_basedn(samdb));
 474         s->forest.config_dn_str = ldb_dn_get_linearized(ldb_get_config_basedn(samdb));
 475         s->forest.schema_dn_str = ldb_dn_get_linearized(ldb_get_schema_basedn(samdb));
 476
 477         s->chunk.gensec_skey = &s->gensec_skey;
 478         s->chunk.partition = &s->partition;
 479         s->chunk.forest = &s->forest;
 480         s->chunk.dest_dsa = &s->dest_dsa;
 481
 482         return pytalloc_GenericObject_steal(s);
 483 }
 484
 485
 486 /*
 487   process one replication chunk
 488  */
 489 static PyObject *py_net_replicate_chunk(py_net_Object *self, PyObject *args, PyObject *kwargs)
 490 {
 491         const char *kwnames[] = { "state", "level", "ctr",
 492                                   "schema", "req_level", "req",
 493                                   NULL };
 494         PyObject *py_state, *py_ctr, *py_schema = Py_None, *py_req = Py_None;
 495         struct replicate_state *s;
 496         unsigned level;
 497         unsigned req_level = 0;
 498         WERROR (*chunk_handler)(void *private_data, const struct libnet_BecomeDC_StoreChunk *c);
 499         WERROR werr;
 500         enum drsuapi_DsExtendedError extended_ret = DRSUAPI_EXOP_ERR_NONE;
 501         enum drsuapi_DsExtendedOperation exop = DRSUAPI_EXOP_NONE;
 502
 503         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OIO|OIO",
 504                                          discard_const_p(char *, kwnames),
 505                                          &py_state, &level, &py_ctr,
 506                                          &py_schema, &req_level, &py_req)) {
 507                 return NULL;
 508         }
 509
 510         s = pytalloc_get_type(py_state, struct replicate_state);
 511         if (!s) {
 512                 return NULL;
 513         }
 514
 515         switch (level) {
 516         case 1:
 517                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr1")) {
 518                         return NULL;
 519                 }
 520                 s->chunk.ctr1                         = pytalloc_get_ptr(py_ctr);
 521                 if (s->chunk.ctr1->naming_context != NULL) {
 522                         s->partition.nc = *s->chunk.ctr1->naming_context;
 523                 }
 524                 extended_ret = s->chunk.ctr1->extended_ret;
 525                 s->partition.more_data                = s->chunk.ctr1->more_data;
 526                 s->partition.source_dsa_guid          = s->chunk.ctr1->source_dsa_guid;
 527                 s->partition.source_dsa_invocation_id = s->chunk.ctr1->source_dsa_invocation_id;
 528                 s->partition.highwatermark            = s->chunk.ctr1->new_highwatermark;
 529                 break;
 530         case 6:
 531                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr6")) {
 532                         return NULL;
 533                 }
 534                 s->chunk.ctr6                         = pytalloc_get_ptr(py_ctr);
 535                 if (s->chunk.ctr6->naming_context != NULL) {
 536                         s->partition.nc = *s->chunk.ctr6->naming_context;
 537                 }
 538                 extended_ret = s->chunk.ctr6->extended_ret;
 539                 s->partition.more_data                = s->chunk.ctr6->more_data;
 540                 s->partition.source_dsa_guid          = s->chunk.ctr6->source_dsa_guid;
 541                 s->partition.source_dsa_invocation_id = s->chunk.ctr6->source_dsa_invocation_id;
 542                 s->partition.highwatermark            = s->chunk.ctr6->new_highwatermark;
 543                 break;
 544         default:
 545                 PyErr_Format(PyExc_TypeError, "Bad level %u in replicate_chunk", level);
 546                 return NULL;
 547         }
 548
 549         s->chunk.req5 = NULL;
 550         s->chunk.req8 = NULL;
 551         s->chunk.req10 = NULL;
 552         if (py_req) {
 553                 switch (req_level) {
 554                 case 0:
 555                         break;
 556                 case 5:
 557                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest5")) {
 558                                 return NULL;
 559                         }
 560
 561                         s->chunk.req5 = pytalloc_get_ptr(py_req);
 562                         exop = s->chunk.req5->extended_op;
 563                         break;
 564                 case 8:
 565                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest8")) {
 566                                 return NULL;
 567                         }
 568
 569                         s->chunk.req8 = pytalloc_get_ptr(py_req);
 570                         exop = s->chunk.req8->extended_op;
 571                         break;
 572                 case 10:
 573                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest10")) {
 574                                 return NULL;
 575                         }
 576
 577                         s->chunk.req10 = pytalloc_get_ptr(py_req);
 578                         exop = s->chunk.req10->extended_op;
 579                         break;
 580                 default:
 581                         PyErr_Format(PyExc_TypeError, "Bad req_level %u in replicate_chunk", req_level);
 582                         return NULL;
 583                 }
 584         }
 585
 586         if (exop != DRSUAPI_EXOP_NONE && extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
 587                 PyErr_SetDsExtendedError(extended_ret, NULL);
 588                 return NULL;
 589         }
 590
 591         s->chunk.req_level = req_level;
 592
 593         chunk_handler = libnet_vampire_cb_store_chunk;
 594         if (py_schema) {
 595                 if (!PyBool_Check(py_schema)) {
 596                         PyErr_SetString(PyExc_TypeError, "Expected boolean schema");
 597                         return NULL;
 598                 }
 599                 if (py_schema == Py_True) {
 600                         chunk_handler = libnet_vampire_cb_schema_chunk;
 601                 }
 602         }
 603
 604         s->chunk.ctr_level = level;
 605
 606         werr = chunk_handler(s->vampire_state, &s->chunk);
 607         if (!W_ERROR_IS_OK(werr)) {
 608                 char *error_string
 609                         = talloc_asprintf(NULL,
 610                                           "Failed to process 'chunk' of DRS replicated objects: %s",
 611                                           win_errstr(werr));
 612                 PyErr_SetWERROR_and_string(werr, error_string);
 613                 TALLOC_FREE(error_string);
 614                 return NULL;
 615         }
 616
 617         Py_RETURN_NONE;
 618 }
 619
 620
 621 /*
 622   just do the decryption of a DRS replicated attribute
 623  */
 624 static PyObject *py_net_replicate_decrypt(py_net_Object *self, PyObject *args, PyObject *kwargs)
 625 {
 626         const char *kwnames[] = { "drspipe", "attribute", "rid", NULL };
 627         PyObject *py_drspipe, *py_attribute;
 628         NTSTATUS status;
 629         dcerpc_InterfaceObject *drs_pipe;
 630         TALLOC_CTX *frame;
 631         TALLOC_CTX *context;
 632         DATA_BLOB gensec_skey;
 633         unsigned int rid;
 634         struct drsuapi_DsReplicaAttribute *attribute;
 635         WERROR werr;
 636
 637         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOI",
 638                                          discard_const_p(char *, kwnames),
 639                                          &py_drspipe,
 640                                          &py_attribute, &rid)) {
 641                 return NULL;
 642         }
 643
 644         frame = talloc_stackframe();
 645
 646         if (!py_check_dcerpc_type(py_drspipe,
 647                                   "samba.dcerpc.base",
 648                                   "ClientConnection")) {
 649                 return NULL;
 650         }
 651         drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 652
 653         status = gensec_session_key(drs_pipe->pipe->conn->security_state.generic_state,
 654                                     frame,
 655                                     &gensec_skey);
 656         if (!NT_STATUS_IS_OK(status)) {
 657                 char *error_string
 658                         = talloc_asprintf(frame,
 659                                           "Unable to get session key from drspipe: %s",
 660                                           nt_errstr(status));
 661                 PyErr_SetNTSTATUS_and_string(status, error_string);
 662                 talloc_free(frame);
 663                 return NULL;
 664         }
 665
 666         if (!py_check_dcerpc_type(py_attribute, "samba.dcerpc.drsuapi",
 667                                   "DsReplicaAttribute")) {
 668                 return NULL;
 669         }
 670
 671         attribute = pytalloc_get_ptr(py_attribute);
 672         context   = pytalloc_get_mem_ctx(py_attribute);
 673         werr = drsuapi_decrypt_attribute(context, &gensec_skey,
 674                                          rid, 0, attribute);
 675         if (!W_ERROR_IS_OK(werr)) {
 676                 char *error_string = talloc_asprintf(frame,
 677                                                      "Unable to get decrypt attribute: %s",
 678                                                      win_errstr(werr));
 679                 PyErr_SetWERROR_and_string(werr, error_string);
 680                 talloc_free(frame);
 681                 return NULL;
 682         }
 683
 684         talloc_free(frame);
 685
 686         Py_RETURN_NONE;
 687
 688 }
 689
 690 /*
 691   find a DC given a domain name and server type
 692  */
 693 static PyObject *py_net_finddc(py_net_Object *self, PyObject *args, PyObject *kwargs)
 694 {
 695         const char *domain = NULL, *address = NULL;
 696         unsigned server_type;
 697         NTSTATUS status;
 698         struct finddcs *io;
 699         TALLOC_CTX *mem_ctx;
 700         PyObject *ret;
 701         const char * const kwnames[] = { "flags", "domain", "address", NULL };
 702
 703         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "I|zz",
 704                                          discard_const_p(char *, kwnames),
 705                                          &server_type, &domain, &address)) {
 706                 return NULL;
 707         }
 708
 709         mem_ctx = talloc_new(self->mem_ctx);
 710         if (mem_ctx == NULL) {
 711                 PyErr_NoMemory();
 712                 return NULL;
 713         }
 714
 715         io = talloc_zero(mem_ctx, struct finddcs);
 716         if (io == NULL) {
 717                 TALLOC_FREE(mem_ctx);
 718                 PyErr_NoMemory();
 719                 return NULL;
 720         }
 721
 722         if (domain != NULL) {
 723                 io->in.domain_name = domain;
 724         }
 725         if (address != NULL) {
 726                 io->in.server_address = address;
 727         }
 728         io->in.minimum_dc_flags = server_type;
 729
 730         status = finddcs_cldap(io, io,
 731                                lpcfg_resolve_context(self->libnet_ctx->lp_ctx), self->ev);
 732         if (NT_STATUS_IS_ERR(status)) {
 733                 PyErr_SetNTSTATUS(status);
 734                 talloc_free(mem_ctx);
 735                 return NULL;
 736         }
 737
 738         ret = py_return_ndr_struct("samba.dcerpc.nbt", "NETLOGON_SAM_LOGON_RESPONSE_EX",
 739                                    io, &io->out.netlogon.data.nt5_ex);
 740         talloc_free(mem_ctx);
 741
 742         return ret;
 743 }
 744
 745
 746 static const char py_net_replicate_init_doc[] = "replicate_init(samdb, lp, drspipe)\n"
 747                                          "Setup for replicate_chunk calls.";
 748
 749 static const char py_net_replicate_chunk_doc[] = "replicate_chunk(state, level, ctr, schema)\n"
 750                                          "Process replication for one chunk";
 751
 752 static const char py_net_replicate_decrypt_doc[] = "replicate_decrypt(drs, attribute, rid)\n"
 753                                          "Decrypt (in place) a DsReplicaAttribute replicated with drs.GetNCChanges()";
 754
 755 static const char py_net_finddc_doc[] = "finddc(flags=server_type, domain=None, address=None)\n"
 756                                          "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";
 757
 758 static PyMethodDef net_obj_methods[] = {
 759         {"join_member", (PyCFunction)py_net_join_member, METH_VARARGS|METH_KEYWORDS, py_net_join_member_doc},
 760         {"change_password", (PyCFunction)py_net_change_password, METH_VARARGS|METH_KEYWORDS, py_net_change_password_doc},
 761         {"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
 762         {"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
 763         {"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
 764         {"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
 765         {"replicate_init", (PyCFunction)py_net_replicate_init, METH_VARARGS|METH_KEYWORDS, py_net_replicate_init_doc},
 766         {"replicate_chunk", (PyCFunction)py_net_replicate_chunk, METH_VARARGS|METH_KEYWORDS, py_net_replicate_chunk_doc},
 767         {"replicate_decrypt", (PyCFunction)py_net_replicate_decrypt, METH_VARARGS|METH_KEYWORDS, py_net_replicate_decrypt_doc},
 768         {"finddc", (PyCFunction)py_net_finddc, METH_VARARGS|METH_KEYWORDS, py_net_finddc_doc},
 769         { NULL }
 770 };
 771
 772 static void py_net_dealloc(py_net_Object *self)
 773 {
 774         talloc_free(self->mem_ctx);
 775         PyObject_Del(self);
 776 }
 777
 778 static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 779 {
 780         PyObject *py_creds, *py_lp = Py_None;
 781         const char *kwnames[] = { "creds", "lp", "server", NULL };
 782         py_net_Object *ret;
 783         struct loadparm_context *lp;
 784         const char *server_address = NULL;
 785
 786         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Oz",
 787                                          discard_const_p(char *, kwnames), &py_creds, &py_lp,
 788                                          &server_address))
 789                 return NULL;
 790
 791         ret = PyObject_New(py_net_Object, type);
 792         if (ret == NULL) {
 793                 return NULL;
 794         }
 795
 796         /* FIXME: we really need to get a context from the caller or we may end
 797          * up with 2 event contexts */
 798         ret->ev = s4_event_context_init(NULL);
 799         ret->mem_ctx = talloc_new(ret->ev);
 800
 801         lp = lpcfg_from_py_object(ret->mem_ctx, py_lp);
 802         if (lp == NULL) {
 803                 Py_DECREF(ret);
 804                 return NULL;
 805         }
 806
 807         ret->libnet_ctx = libnet_context_init(ret->ev, lp);
 808         if (ret->libnet_ctx == NULL) {
 809                 PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
 810                 Py_DECREF(ret);
 811                 return NULL;
 812         }
 813
 814         ret->libnet_ctx->server_address = server_address;
 815
 816         ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
 817         if (ret->libnet_ctx->cred == NULL) {
 818                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 819                 Py_DECREF(ret);
 820                 return NULL;
 821         }
 822
 823         return (PyObject *)ret;
 824 }
 825
 826
 827 PyTypeObject py_net_Type = {
 828         PyVarObject_HEAD_INIT(NULL, 0)
 829         .tp_name = "net.Net",
 830         .tp_basicsize = sizeof(py_net_Object),
 831         .tp_dealloc = (destructor)py_net_dealloc,
 832         .tp_methods = net_obj_methods,
 833         .tp_new = net_obj_new,
 834 };
 835
 836 static struct PyModuleDef moduledef = {
 837         PyModuleDef_HEAD_INIT,
 838         .m_name = "net",
 839         .m_size = -1,
 840 };
 841
 842 MODULE_INIT_FUNC(net)
 843 {
 844         PyObject *m;
 845
 846         if (PyType_Ready(&py_net_Type) < 0)
 847                 return NULL;
 848
 849         m = PyModule_Create(&moduledef);
 850         if (m == NULL)
 851                 return NULL;
 852
 853         Py_INCREF(&py_net_Type);
 854         PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
 855         PyModule_AddIntConstant(m, "LIBNET_JOINDOMAIN_AUTOMATIC", LIBNET_JOINDOMAIN_AUTOMATIC);
 856         PyModule_AddIntConstant(m, "LIBNET_JOINDOMAIN_SPECIFIED", LIBNET_JOINDOMAIN_SPECIFIED);
 857         PyModule_AddIntConstant(m, "LIBNET_JOIN_AUTOMATIC", LIBNET_JOIN_AUTOMATIC);
 858         PyModule_AddIntConstant(m, "LIBNET_JOIN_SPECIFIED", LIBNET_JOIN_SPECIFIED);
 859
 860         return m;
 861 }