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 "includes.h"
  24 #include <pyldb.h>
  25 #include <pytalloc.h>
  26 #include "libnet.h"
  27 #include "auth/credentials/pycredentials.h"
  28 #include "libcli/security/security.h"
  29 #include "lib/events/events.h"
  30 #include "param/pyparam.h"
  31 #include "auth/gensec/gensec.h"
  32 #include "librpc/rpc/pyrpc_util.h"
  33 #include "libcli/resolve/resolve.h"
  34 #include "libcli/finddc.h"
  35 #include "dsdb/samdb/samdb.h"
  36 #include "py_net.h"
  37 #include "librpc/rpc/pyrpc_util.h"
  38
  39 void initnet(void);
  40
  41 static PyObject *py_net_join_member(py_net_Object *self, PyObject *args, PyObject *kwargs)
  42 {
  43         struct libnet_Join_member r;
  44         int _level = 0;
  45         NTSTATUS status;
  46         PyObject *result;
  47         TALLOC_CTX *mem_ctx;
  48         const char *kwnames[] = { "domain_name", "netbios_name", "level", "machinepass", NULL };
  49
  50         ZERO_STRUCT(r);
  51
  52         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ssi|z:Join", discard_const_p(char *, kwnames),
  53                                          &r.in.domain_name, &r.in.netbios_name,
  54                                          &_level,
  55                                          &r.in.account_pass)) {
  56                 return NULL;
  57         }
  58         r.in.level = _level;
  59
  60         mem_ctx = talloc_new(self->mem_ctx);
  61         if (mem_ctx == NULL) {
  62                 PyErr_NoMemory();
  63                 return NULL;
  64         }
  65
  66         status = libnet_Join_member(self->libnet_ctx, mem_ctx, &r);
  67         if (NT_STATUS_IS_ERR(status)) {
  68                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
  69                 talloc_free(mem_ctx);
  70                 return NULL;
  71         }
  72
  73         result = Py_BuildValue("sss", r.out.join_password,
  74                                dom_sid_string(mem_ctx, r.out.domain_sid),
  75                                r.out.domain_name);
  76
  77         talloc_free(mem_ctx);
  78
  79         return result;
  80 }
  81
  82 static const char py_net_join_member_doc[] = "join_member(domain_name, netbios_name, level) -> (join_password, domain_sid, domain_name)\n\n" \
  83 "Join the domain with the specified name.";
  84
  85 static PyObject *py_net_change_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
  86 {
  87         union libnet_ChangePassword r;
  88         NTSTATUS status;
  89         TALLOC_CTX *mem_ctx;
  90         struct tevent_context *ev;
  91         const char *kwnames[] = { "newpassword", NULL };
  92
  93         ZERO_STRUCT(r);
  94
  95         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s:change_password",
  96                                         discard_const_p(char *, kwnames),
  97                                         &r.generic.in.newpassword)) {
  98                 return NULL;
  99         }
 100
 101         r.generic.level = LIBNET_CHANGE_PASSWORD_GENERIC;
 102         r.generic.in.account_name = cli_credentials_get_username(self->libnet_ctx->cred);
 103         r.generic.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 104         r.generic.in.oldpassword = cli_credentials_get_password(self->libnet_ctx->cred);
 105
 106         /* FIXME: we really need to get a context from the caller or we may end
 107          * up with 2 event contexts */
 108         ev = s4_event_context_init(NULL);
 109
 110         mem_ctx = talloc_new(ev);
 111         if (mem_ctx == NULL) {
 112                 PyErr_NoMemory();
 113                 return NULL;
 114         }
 115
 116         status = libnet_ChangePassword(self->libnet_ctx, mem_ctx, &r);
 117         if (NT_STATUS_IS_ERR(status)) {
 118                 PyErr_SetString(PyExc_RuntimeError,
 119                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 120                 talloc_free(mem_ctx);
 121                 return NULL;
 122         }
 123
 124         talloc_free(mem_ctx);
 125
 126         Py_RETURN_NONE;
 127 }
 128
 129 static const char py_net_change_password_doc[] = "change_password(newpassword) -> True\n\n" \
 130 "Change password for a user. You must supply credential with enough rights to do this.\n\n" \
 131 "Sample usage is:\n" \
 132 "net.change_password(newpassword=<new_password>)\n";
 133
 134
 135 static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
 136 {
 137         union libnet_SetPassword r;
 138         NTSTATUS status;
 139         TALLOC_CTX *mem_ctx;
 140         struct tevent_context *ev;
 141         const char *kwnames[] = { "account_name", "domain_name", "newpassword", NULL };
 142
 143         ZERO_STRUCT(r);
 144
 145         r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
 146
 147         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sss:set_password",
 148                                         discard_const_p(char *, kwnames),
 149                                          &r.generic.in.account_name,
 150                                          &r.generic.in.domain_name,
 151                                          &r.generic.in.newpassword)) {
 152                 return NULL;
 153         }
 154
 155         /* FIXME: we really need to get a context from the caller or we may end
 156          * up with 2 event contexts */
 157         ev = s4_event_context_init(NULL);
 158
 159         mem_ctx = talloc_new(ev);
 160         if (mem_ctx == NULL) {
 161                 PyErr_NoMemory();
 162                 return NULL;
 163         }
 164
 165         status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
 166         if (NT_STATUS_IS_ERR(status)) {
 167                 PyErr_SetString(PyExc_RuntimeError,
 168                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 169                 talloc_free(mem_ctx);
 170                 return NULL;
 171         }
 172
 173         talloc_free(mem_ctx);
 174
 175         Py_RETURN_NONE;
 176 }
 177
 178 static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
 179 "Set password for a user. You must supply credential with enough rights to do this.\n\n" \
 180 "Sample usage is:\n" \
 181 "net.set_password(account_name=account_name, domain_name=domain_name, newpassword=new_pass)\n";
 182
 183
 184 static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
 185 {
 186         const char *kwnames[] = { "server_name", NULL };
 187         union libnet_RemoteTOD r;
 188         NTSTATUS status;
 189         TALLOC_CTX *mem_ctx;
 190         char timestr[64];
 191         PyObject *ret;
 192         struct tm *tm;
 193
 194         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
 195                 discard_const_p(char *, kwnames), &r.generic.in.server_name))
 196                 return NULL;
 197
 198         r.generic.level                 = LIBNET_REMOTE_TOD_GENERIC;
 199
 200         mem_ctx = talloc_new(NULL);
 201         if (mem_ctx == NULL) {
 202                 PyErr_NoMemory();
 203                 return NULL;
 204         }
 205
 206         status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
 207         if (!NT_STATUS_IS_OK(status)) {
 208                 PyErr_SetString(PyExc_RuntimeError,
 209                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 210                 talloc_free(mem_ctx);
 211                 return NULL;
 212         }
 213
 214         ZERO_STRUCT(timestr);
 215         tm = localtime(&r.generic.out.time);
 216         strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
 217
 218         ret = PyString_FromString(timestr);
 219
 220         talloc_free(mem_ctx);
 221
 222         return ret;
 223 }
 224
 225 static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
 226 "Retrieve the remote time on a server";
 227
 228 static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
 229 {
 230         const char *kwnames[] = { "username", NULL };
 231         NTSTATUS status;
 232         TALLOC_CTX *mem_ctx;
 233         struct libnet_CreateUser r;
 234
 235         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 236                                                                          &r.in.user_name))
 237                 return NULL;
 238
 239         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 240
 241         mem_ctx = talloc_new(NULL);
 242         if (mem_ctx == NULL) {
 243                 PyErr_NoMemory();
 244                 return NULL;
 245         }
 246
 247         status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
 248         if (!NT_STATUS_IS_OK(status)) {
 249                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 250                 talloc_free(mem_ctx);
 251                 return NULL;
 252         }
 253
 254         talloc_free(mem_ctx);
 255
 256         Py_RETURN_NONE;
 257 }
 258
 259 static const char py_net_create_user_doc[] = "create_user(username)\n"
 260 "Create a new user.";
 261
 262 static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
 263 {
 264         const char *kwnames[] = { "username", NULL };
 265         NTSTATUS status;
 266         TALLOC_CTX *mem_ctx;
 267         struct libnet_DeleteUser r;
 268
 269         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 270                                                                          &r.in.user_name))
 271                 return NULL;
 272
 273         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 274
 275         mem_ctx = talloc_new(NULL);
 276         if (mem_ctx == NULL) {
 277                 PyErr_NoMemory();
 278                 return NULL;
 279         }
 280
 281         status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
 282         if (!NT_STATUS_IS_OK(status)) {
 283                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 284                 talloc_free(mem_ctx);
 285                 return NULL;
 286         }
 287
 288         talloc_free(mem_ctx);
 289
 290         Py_RETURN_NONE;
 291 }
 292
 293 static const char py_net_delete_user_doc[] = "delete_user(username)\n"
 294 "Delete a user.";
 295
 296 struct replicate_state {
 297         void *vampire_state;
 298         dcerpc_InterfaceObject *drs_pipe;
 299         struct libnet_BecomeDC_StoreChunk chunk;
 300         DATA_BLOB gensec_skey;
 301         struct libnet_BecomeDC_Partition partition;
 302         struct libnet_BecomeDC_Forest forest;
 303         struct libnet_BecomeDC_DestDSA dest_dsa;
 304 };
 305
 306 /*
 307   setup for replicate_chunk() calls
 308  */
 309 static PyObject *py_net_replicate_init(py_net_Object *self, PyObject *args, PyObject *kwargs)
 310 {
 311         const char *kwnames[] = { "samdb", "lp", "drspipe", "invocation_id", NULL };
 312         PyObject *py_ldb, *py_lp, *py_drspipe, *py_invocation_id;
 313         struct ldb_context *samdb;
 314         struct loadparm_context *lp;
 315         struct replicate_state *s;
 316         NTSTATUS status;
 317
 318         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOOO",
 319                                          discard_const_p(char *, kwnames),
 320                                          &py_ldb, &py_lp, &py_drspipe,
 321                                          &py_invocation_id)) {
 322                 return NULL;
 323         }
 324
 325         s = talloc_zero(NULL, struct replicate_state);
 326         if (!s) return NULL;
 327
 328         lp = lpcfg_from_py_object(s, py_lp);
 329         if (lp == NULL) {
 330                 PyErr_SetString(PyExc_TypeError, "Expected lp object");
 331                 talloc_free(s);
 332                 return NULL;
 333         }
 334
 335         samdb = pyldb_Ldb_AsLdbContext(py_ldb);
 336         if (samdb == NULL) {
 337                 PyErr_SetString(PyExc_TypeError, "Expected ldb object");
 338                 talloc_free(s);
 339                 return NULL;
 340         }
 341         if (!py_check_dcerpc_type(py_invocation_id, "samba.dcerpc.misc", "GUID")) {
 342
 343                 talloc_free(s);
 344                 return NULL;
 345         }
 346         s->dest_dsa.invocation_id = *pytalloc_get_type(py_invocation_id, struct GUID);
 347
 348         s->drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 349
 350         s->vampire_state = libnet_vampire_replicate_init(s, samdb, lp);
 351         if (s->vampire_state == NULL) {
 352                 PyErr_SetString(PyExc_TypeError, "Failed to initialise vampire_state");
 353                 talloc_free(s);
 354                 return NULL;
 355         }
 356
 357         status = gensec_session_key(s->drs_pipe->pipe->conn->security_state.generic_state,
 358                                     s,
 359                                     &s->gensec_skey);
 360         if (!NT_STATUS_IS_OK(status)) {
 361                 PyErr_Format(PyExc_RuntimeError, "Unable to get session key from drspipe: %s",
 362                              nt_errstr(status));
 363                 talloc_free(s);
 364                 return NULL;
 365         }
 366
 367         s->forest.dns_name = samdb_dn_to_dns_domain(s, ldb_get_root_basedn(samdb));
 368         s->forest.root_dn_str = ldb_dn_get_linearized(ldb_get_root_basedn(samdb));
 369         s->forest.config_dn_str = ldb_dn_get_linearized(ldb_get_config_basedn(samdb));
 370         s->forest.schema_dn_str = ldb_dn_get_linearized(ldb_get_schema_basedn(samdb));
 371
 372         s->chunk.gensec_skey = &s->gensec_skey;
 373         s->chunk.partition = &s->partition;
 374         s->chunk.forest = &s->forest;
 375         s->chunk.dest_dsa = &s->dest_dsa;
 376
 377         return pytalloc_CObject_FromTallocPtr(s);
 378 }
 379
 380
 381 /*
 382   process one replication chunk
 383  */
 384 static PyObject *py_net_replicate_chunk(py_net_Object *self, PyObject *args, PyObject *kwargs)
 385 {
 386         const char *kwnames[] = { "state", "level", "ctr",
 387                                   "schema", "req_level", "req",
 388                                   NULL };
 389         PyObject *py_state, *py_ctr, *py_schema = Py_None, *py_req = Py_None;
 390         struct replicate_state *s;
 391         unsigned level;
 392         unsigned req_level = 0;
 393         WERROR (*chunk_handler)(void *private_data, const struct libnet_BecomeDC_StoreChunk *c);
 394         WERROR werr;
 395         enum drsuapi_DsExtendedError extended_ret = DRSUAPI_EXOP_ERR_NONE;
 396         enum drsuapi_DsExtendedOperation exop = DRSUAPI_EXOP_NONE;
 397
 398         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OIO|OIO",
 399                                          discard_const_p(char *, kwnames),
 400                                          &py_state, &level, &py_ctr,
 401                                          &py_schema, &req_level, &py_req)) {
 402                 return NULL;
 403         }
 404
 405         s = talloc_get_type(PyCObject_AsVoidPtr(py_state), struct replicate_state);
 406         if (!s) {
 407                 PyErr_SetString(PyExc_TypeError, "Expected replication_state");
 408                 return NULL;
 409         }
 410
 411         switch (level) {
 412         case 1:
 413                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr1")) {
 414                         return NULL;
 415                 }
 416                 s->chunk.ctr1                         = pytalloc_get_ptr(py_ctr);
 417                 if (s->chunk.ctr1->naming_context != NULL) {
 418                         s->partition.nc = *s->chunk.ctr1->naming_context;
 419                 }
 420                 extended_ret = s->chunk.ctr1->extended_ret;
 421                 s->partition.more_data                = s->chunk.ctr1->more_data;
 422                 s->partition.source_dsa_guid          = s->chunk.ctr1->source_dsa_guid;
 423                 s->partition.source_dsa_invocation_id = s->chunk.ctr1->source_dsa_invocation_id;
 424                 s->partition.highwatermark            = s->chunk.ctr1->new_highwatermark;
 425                 break;
 426         case 6:
 427                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr6")) {
 428                         return NULL;
 429                 }
 430                 s->chunk.ctr6                         = pytalloc_get_ptr(py_ctr);
 431                 if (s->chunk.ctr6->naming_context != NULL) {
 432                         s->partition.nc = *s->chunk.ctr6->naming_context;
 433                 }
 434                 extended_ret = s->chunk.ctr6->extended_ret;
 435                 s->partition.more_data                = s->chunk.ctr6->more_data;
 436                 s->partition.source_dsa_guid          = s->chunk.ctr6->source_dsa_guid;
 437                 s->partition.source_dsa_invocation_id = s->chunk.ctr6->source_dsa_invocation_id;
 438                 s->partition.highwatermark            = s->chunk.ctr6->new_highwatermark;
 439                 break;
 440         default:
 441                 PyErr_Format(PyExc_TypeError, "Bad level %u in replicate_chunk", level);
 442                 return NULL;
 443         }
 444
 445         s->chunk.req5 = NULL;
 446         s->chunk.req8 = NULL;
 447         s->chunk.req10 = NULL;
 448         if (py_req) {
 449                 switch (req_level) {
 450                 case 0:
 451                         break;
 452                 case 5:
 453                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest5")) {
 454                                 return NULL;
 455                         }
 456
 457                         s->chunk.req5 = pytalloc_get_ptr(py_req);
 458                         exop = s->chunk.req5->extended_op;
 459                         break;
 460                 case 8:
 461                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest8")) {
 462                                 return NULL;
 463                         }
 464
 465                         s->chunk.req8 = pytalloc_get_ptr(py_req);
 466                         exop = s->chunk.req8->extended_op;
 467                         break;
 468                 case 10:
 469                         if (!py_check_dcerpc_type(py_req, "samba.dcerpc.drsuapi", "DsGetNCChangesRequest10")) {
 470                                 return NULL;
 471                         }
 472
 473                         s->chunk.req10 = pytalloc_get_ptr(py_req);
 474                         exop = s->chunk.req10->extended_op;
 475                         break;
 476                 default:
 477                         PyErr_Format(PyExc_TypeError, "Bad req_level %u in replicate_chunk", req_level);
 478                         return NULL;
 479                 }
 480         }
 481
 482         if (exop != DRSUAPI_EXOP_NONE && extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
 483                 PyErr_Format(PyExc_RuntimeError, "Remote EXOP %d failed with %d", exop, extended_ret);
 484                 return NULL;
 485         }
 486
 487         s->chunk.req_level = req_level;
 488
 489         chunk_handler = libnet_vampire_cb_store_chunk;
 490         if (py_schema) {
 491                 if (!PyBool_Check(py_schema)) {
 492                         PyErr_SetString(PyExc_TypeError, "Expected boolean schema");
 493                         return NULL;
 494                 }
 495                 if (py_schema == Py_True) {
 496                         chunk_handler = libnet_vampire_cb_schema_chunk;
 497                 }
 498         }
 499
 500         s->chunk.ctr_level = level;
 501
 502         werr = chunk_handler(s->vampire_state, &s->chunk);
 503         if (!W_ERROR_IS_OK(werr)) {
 504                 PyErr_Format(PyExc_TypeError, "Failed to process chunk: %s", win_errstr(werr));
 505                 return NULL;
 506         }
 507
 508         Py_RETURN_NONE;
 509 }
 510
 511
 512 /*
 513   find a DC given a domain name and server type
 514  */
 515 static PyObject *py_net_finddc(py_net_Object *self, PyObject *args, PyObject *kwargs)
 516 {
 517         const char *domain = NULL, *address = NULL;
 518         unsigned server_type;
 519         NTSTATUS status;
 520         struct finddcs *io;
 521         TALLOC_CTX *mem_ctx;
 522         PyObject *ret;
 523         const char * const kwnames[] = { "flags", "domain", "address", NULL };
 524
 525         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "I|zz",
 526                                          discard_const_p(char *, kwnames),
 527                                          &server_type, &domain, &address)) {
 528                 return NULL;
 529         }
 530
 531         mem_ctx = talloc_new(self->mem_ctx);
 532
 533         io = talloc_zero(mem_ctx, struct finddcs);
 534         if (domain != NULL) {
 535                 io->in.domain_name = domain;
 536         }
 537         if (address != NULL) {
 538                 io->in.server_address = address;
 539         }
 540         io->in.minimum_dc_flags = server_type;
 541
 542         status = finddcs_cldap(io, io,
 543                                lpcfg_resolve_context(self->libnet_ctx->lp_ctx), self->ev);
 544         if (NT_STATUS_IS_ERR(status)) {
 545                 PyErr_SetString(PyExc_RuntimeError, nt_errstr(status));
 546                 talloc_free(mem_ctx);
 547                 return NULL;
 548         }
 549
 550         ret = py_return_ndr_struct("samba.dcerpc.nbt", "NETLOGON_SAM_LOGON_RESPONSE_EX",
 551                                    io, &io->out.netlogon.data.nt5_ex);
 552         talloc_free(mem_ctx);
 553
 554         return ret;
 555 }
 556
 557
 558 static const char py_net_replicate_init_doc[] = "replicate_init(samdb, lp, drspipe)\n"
 559                                          "Setup for replicate_chunk calls.";
 560
 561 static const char py_net_replicate_chunk_doc[] = "replicate_chunk(state, level, ctr, schema)\n"
 562                                          "Process replication for one chunk";
 563
 564 static const char py_net_finddc_doc[] = "finddc(flags=server_type, domain=None, address=None)\n"
 565                                          "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";
 566
 567 static PyMethodDef net_obj_methods[] = {
 568         {"join_member", (PyCFunction)py_net_join_member, METH_VARARGS|METH_KEYWORDS, py_net_join_member_doc},
 569         {"change_password", (PyCFunction)py_net_change_password, METH_VARARGS|METH_KEYWORDS, py_net_change_password_doc},
 570         {"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
 571         {"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
 572         {"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
 573         {"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
 574         {"replicate_init", (PyCFunction)py_net_replicate_init, METH_VARARGS|METH_KEYWORDS, py_net_replicate_init_doc},
 575         {"replicate_chunk", (PyCFunction)py_net_replicate_chunk, METH_VARARGS|METH_KEYWORDS, py_net_replicate_chunk_doc},
 576         {"finddc", (PyCFunction)py_net_finddc, METH_KEYWORDS, py_net_finddc_doc},
 577         { NULL }
 578 };
 579
 580 static void py_net_dealloc(py_net_Object *self)
 581 {
 582         talloc_free(self->mem_ctx);
 583         PyObject_Del(self);
 584 }
 585
 586 static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 587 {
 588         PyObject *py_creds, *py_lp = Py_None;
 589         const char *kwnames[] = { "creds", "lp", "server", NULL };
 590         py_net_Object *ret;
 591         struct loadparm_context *lp;
 592         const char *server_address = NULL;
 593
 594         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Oz",
 595                                          discard_const_p(char *, kwnames), &py_creds, &py_lp,
 596                                          &server_address))
 597                 return NULL;
 598
 599         ret = PyObject_New(py_net_Object, type);
 600         if (ret == NULL) {
 601                 return NULL;
 602         }
 603
 604         /* FIXME: we really need to get a context from the caller or we may end
 605          * up with 2 event contexts */
 606         ret->ev = s4_event_context_init(NULL);
 607         ret->mem_ctx = talloc_new(ret->ev);
 608
 609         lp = lpcfg_from_py_object(ret->mem_ctx, py_lp);
 610         if (lp == NULL) {
 611                 Py_DECREF(ret);
 612                 return NULL;
 613         }
 614
 615         ret->libnet_ctx = libnet_context_init(ret->ev, lp);
 616         if (ret->libnet_ctx == NULL) {
 617                 PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
 618                 Py_DECREF(ret);
 619                 return NULL;
 620         }
 621
 622         ret->libnet_ctx->server_address = server_address;
 623
 624         ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
 625         if (ret->libnet_ctx->cred == NULL) {
 626                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 627                 Py_DECREF(ret);
 628                 return NULL;
 629         }
 630
 631         return (PyObject *)ret;
 632 }
 633
 634
 635 PyTypeObject py_net_Type = {
 636         PyObject_HEAD_INIT(NULL) 0,
 637         .tp_name = "net.Net",
 638         .tp_basicsize = sizeof(py_net_Object),
 639         .tp_dealloc = (destructor)py_net_dealloc,
 640         .tp_methods = net_obj_methods,
 641         .tp_new = net_obj_new,
 642 };
 643
 644 void initnet(void)
 645 {
 646         PyObject *m;
 647
 648         if (PyType_Ready(&py_net_Type) < 0)
 649                 return;
 650
 651         m = Py_InitModule3("net", NULL, NULL);
 652         if (m == NULL)
 653                 return;
 654
 655         Py_INCREF(&py_net_Type);
 656         PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
 657         PyModule_AddObject(m, "LIBNET_JOINDOMAIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOINDOMAIN_AUTOMATIC));
 658         PyModule_AddObject(m, "LIBNET_JOINDOMAIN_SPECIFIED", PyInt_FromLong(LIBNET_JOINDOMAIN_SPECIFIED));
 659         PyModule_AddObject(m, "LIBNET_JOIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOIN_AUTOMATIC));
 660         PyModule_AddObject(m, "LIBNET_JOIN_SPECIFIED", PyInt_FromLong(LIBNET_JOIN_SPECIFIED));
 661 }