source4/libnet/py_net.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2010
   5    Copyright (C) Kamen Mazdrashki <kamen.mazdrashki@postpath.com> 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include <Python.h>
  22 #include "includes.h"
  23 #include "libnet.h"
  24 #include "auth/credentials/pycredentials.h"
  25 #include "libcli/security/security.h"
  26 #include "lib/events/events.h"
  27 #include "param/param.h"
  28 #include "param/pyparam.h"
  29 #include "lib/ldb/pyldb.h"
  30 #include "auth/gensec/gensec.h"
  31 #include "librpc/rpc/pyrpc.h"
  32 #include "librpc/rpc/pyrpc_util.h"
  33 #include "lib/messaging/messaging.h"
  34 #include "libcli/finddc.h"
  35 #include "libcli/resolve/resolve.h"
  36
  37 typedef struct {
  38         PyObject_HEAD
  39         TALLOC_CTX *mem_ctx;
  40         struct libnet_context *libnet_ctx;
  41         struct tevent_context *ev;
  42 } py_net_Object;
  43
  44 static PyObject *py_net_join(py_net_Object *self, PyObject *args, PyObject *kwargs)
  45 {
  46         struct libnet_Join r;
  47         NTSTATUS status;
  48         PyObject *result;
  49         TALLOC_CTX *mem_ctx;
  50         const char *kwnames[] = { "domain_name", "netbios_name", "join_type", "level", NULL };
  51
  52         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ssii:Join", discard_const_p(char *, kwnames),
  53                                          &r.in.domain_name, &r.in.netbios_name,
  54                                          &r.in.join_type, &r.in.level))
  55                 return NULL;
  56
  57         mem_ctx = talloc_new(self->mem_ctx);
  58
  59         status = libnet_Join(self->libnet_ctx, mem_ctx, &r);
  60         if (NT_STATUS_IS_ERR(status)) {
  61                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
  62                 talloc_free(mem_ctx);
  63                 return NULL;
  64         }
  65
  66         result = Py_BuildValue("sss", r.out.join_password,
  67                                dom_sid_string(mem_ctx, r.out.domain_sid),
  68                                r.out.domain_name);
  69
  70         talloc_free(mem_ctx);
  71
  72         return result;
  73 }
  74
  75 static const char py_net_join_doc[] = "join(domain_name, netbios_name, join_type, level) -> (join_password, domain_sid, domain_name)\n\n" \
  76 "Join the domain with the specified name.";
  77
  78 static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
  79 {
  80         union libnet_SetPassword r;
  81         NTSTATUS status;
  82         PyObject *py_creds;
  83         TALLOC_CTX *mem_ctx;
  84         struct tevent_context *ev;
  85         const char *kwnames[] = { "account_name", "domain_name", "newpassword", "credentials", NULL };
  86
  87         r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
  88
  89         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sssO:set_password", discard_const_p(char *, kwnames),
  90                                          &r.generic.in.account_name, &r.generic.in.domain_name,
  91                                          &r.generic.in.newpassword, &py_creds)) {
  92                 return NULL;
  93         }
  94
  95         /* FIXME: we really need to get a context from the caller or we may end
  96          * up with 2 event contexts */
  97         ev = s4_event_context_init(NULL);
  98         mem_ctx = talloc_new(ev);
  99
 100         status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
 101         if (NT_STATUS_IS_ERR(status)) {
 102                 PyErr_SetString(PyExc_RuntimeError,
 103                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 104                 talloc_free(mem_ctx);
 105                 return NULL;
 106         }
 107
 108         talloc_free(mem_ctx);
 109
 110         Py_RETURN_NONE;
 111 }
 112
 113 static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
 114 "Set password for a user. You must supply credential with enough rights to do this.\n\n" \
 115 "Sample usage is:\n" \
 116 "net.set_password(account_name=<account_name>,\n" \
 117 "                domain_name=domain_name,\n" \
 118 "                newpassword=new_pass)\n";
 119
 120
 121 static PyObject *py_net_export_keytab(py_net_Object *self, PyObject *args, PyObject *kwargs)
 122 {
 123         struct libnet_export_keytab r;
 124         TALLOC_CTX *mem_ctx;
 125         const char *kwnames[] = { "keytab", NULL };
 126         NTSTATUS status;
 127
 128         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s:export_keytab", discard_const_p(char *, kwnames),
 129                                          &r.in.keytab_name)) {
 130                 return NULL;
 131         }
 132
 133         mem_ctx = talloc_new(self->mem_ctx);
 134
 135         status = libnet_export_keytab(self->libnet_ctx, mem_ctx, &r);
 136         if (NT_STATUS_IS_ERR(status)) {
 137                 PyErr_SetString(PyExc_RuntimeError,
 138                                 r.out.error_string?r.out.error_string:nt_errstr(status));
 139                 talloc_free(mem_ctx);
 140                 return NULL;
 141         }
 142
 143         talloc_free(mem_ctx);
 144
 145         Py_RETURN_NONE;
 146 }
 147
 148 static const char py_net_export_keytab_doc[] = "export_keytab(keytab, name)\n\n"
 149 "Export the DC keytab to a keytab file.";
 150
 151 static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
 152 {
 153         const char *kwnames[] = { "server_name", NULL };
 154         union libnet_RemoteTOD r;
 155         NTSTATUS status;
 156         TALLOC_CTX *mem_ctx;
 157         char timestr[64];
 158         PyObject *ret;
 159         struct tm *tm;
 160
 161         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
 162                 discard_const_p(char *, kwnames), &r.generic.in.server_name))
 163                 return NULL;
 164
 165         r.generic.level                 = LIBNET_REMOTE_TOD_GENERIC;
 166
 167         mem_ctx = talloc_new(NULL);
 168         if (mem_ctx == NULL) {
 169                 PyErr_NoMemory();
 170                 return NULL;
 171         }
 172
 173         status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
 174         if (!NT_STATUS_IS_OK(status)) {
 175                 PyErr_SetString(PyExc_RuntimeError,
 176                                 r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
 177                 talloc_free(mem_ctx);
 178                 return NULL;
 179         }
 180
 181         ZERO_STRUCT(timestr);
 182         tm = localtime(&r.generic.out.time);
 183         strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
 184
 185         ret = PyString_FromString(timestr);
 186
 187         talloc_free(mem_ctx);
 188
 189         return ret;
 190 }
 191
 192 static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
 193 "Retrieve the remote time on a server";
 194
 195 static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
 196 {
 197         const char *kwnames[] = { "username", NULL };
 198         NTSTATUS status;
 199         TALLOC_CTX *mem_ctx;
 200         struct libnet_CreateUser r;
 201
 202         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 203                                                                          &r.in.user_name))
 204                 return NULL;
 205
 206         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 207
 208         mem_ctx = talloc_new(NULL);
 209         if (mem_ctx == NULL) {
 210                 PyErr_NoMemory();
 211                 return NULL;
 212         }
 213
 214         status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
 215         if (!NT_STATUS_IS_OK(status)) {
 216                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 217                 talloc_free(mem_ctx);
 218                 return NULL;
 219         }
 220
 221         talloc_free(mem_ctx);
 222
 223         Py_RETURN_NONE;
 224 }
 225
 226 static const char py_net_create_user_doc[] = "create_user(username)\n"
 227 "Create a new user.";
 228
 229 static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
 230 {
 231         const char *kwnames[] = { "username", NULL };
 232         NTSTATUS status;
 233         TALLOC_CTX *mem_ctx;
 234         struct libnet_DeleteUser r;
 235
 236         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
 237                                                                          &r.in.user_name))
 238                 return NULL;
 239
 240         r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
 241
 242         mem_ctx = talloc_new(NULL);
 243         if (mem_ctx == NULL) {
 244                 PyErr_NoMemory();
 245                 return NULL;
 246         }
 247
 248         status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
 249         if (!NT_STATUS_IS_OK(status)) {
 250                 PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
 251                 talloc_free(mem_ctx);
 252                 return NULL;
 253         }
 254
 255         talloc_free(mem_ctx);
 256
 257         Py_RETURN_NONE;
 258 }
 259
 260 static const char py_net_delete_user_doc[] = "delete_user(username)\n"
 261 "Delete a user.";
 262
 263 static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
 264 {
 265         PyObject *mod_security, *dom_sid_Type;
 266
 267         mod_security = PyImport_ImportModule("samba.dcerpc.security");
 268         if (mod_security == NULL)
 269                 return NULL;
 270
 271         dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
 272         if (dom_sid_Type == NULL)
 273                 return NULL;
 274
 275         return py_talloc_reference((PyTypeObject *)dom_sid_Type, sid);
 276 }
 277
 278 static PyObject *py_net_vampire(py_net_Object *self, PyObject *args, PyObject *kwargs)
 279 {
 280         const char *kwnames[] = { "domain", "target_dir", NULL };
 281         NTSTATUS status;
 282         TALLOC_CTX *mem_ctx;
 283         PyObject *ret;
 284         struct libnet_Vampire r;
 285
 286         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|z", discard_const_p(char *, kwnames),
 287                                          &r.in.domain_name, &r.in.targetdir)) {
 288                 return NULL;
 289         }
 290
 291         r.in.netbios_name  = lpcfg_netbios_name(self->libnet_ctx->lp_ctx);
 292         r.out.error_string = NULL;
 293
 294         mem_ctx = talloc_new(NULL);
 295         if (mem_ctx == NULL) {
 296                 PyErr_NoMemory();
 297                 return NULL;
 298         }
 299
 300         status = libnet_Vampire(self->libnet_ctx, mem_ctx, &r);
 301
 302         if (!NT_STATUS_IS_OK(status)) {
 303                 PyErr_SetString(PyExc_RuntimeError,
 304                                 r.out.error_string ? r.out.error_string : nt_errstr(status));
 305                 talloc_free(mem_ctx);
 306                 return NULL;
 307         }
 308
 309         ret = Py_BuildValue("(sO)", r.out.domain_name, py_dom_sid_FromSid(r.out.domain_sid));
 310
 311         talloc_free(mem_ctx);
 312
 313         return ret;
 314 }
 315
 316 struct replicate_state {
 317         void *vampire_state;
 318         dcerpc_InterfaceObject *drs_pipe;
 319         struct libnet_BecomeDC_StoreChunk chunk;
 320         DATA_BLOB gensec_skey;
 321         struct libnet_BecomeDC_Partition partition;
 322         struct libnet_BecomeDC_Forest forest;
 323         struct libnet_BecomeDC_DestDSA dest_dsa;
 324 };
 325
 326 /*
 327   setup for replicate_chunk() calls
 328  */
 329 static PyObject *py_net_replicate_init(py_net_Object *self, PyObject *args, PyObject *kwargs)
 330 {
 331         const char *kwnames[] = { "samdb", "lp", "drspipe", NULL };
 332         PyObject *py_ldb, *py_lp, *py_drspipe;
 333         struct ldb_context *samdb;
 334         struct loadparm_context *lp;
 335         struct replicate_state *s;
 336         NTSTATUS status;
 337
 338         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOO",
 339                                          discard_const_p(char *, kwnames),
 340                                          &py_ldb, &py_lp, &py_drspipe)) {
 341                 return NULL;
 342         }
 343
 344         s = talloc_zero(NULL, struct replicate_state);
 345         if (!s) return NULL;
 346
 347         lp = lpcfg_from_py_object(s, py_lp);
 348         if (lp == NULL) {
 349                 PyErr_SetString(PyExc_TypeError, "Expected lp object");
 350                 talloc_free(s);
 351                 return NULL;
 352         }
 353
 354         samdb = PyLdb_AsLdbContext(py_ldb);
 355         if (samdb == NULL) {
 356                 PyErr_SetString(PyExc_TypeError, "Expected ldb object");
 357                 talloc_free(s);
 358                 return NULL;
 359         }
 360
 361         s->drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
 362
 363         s->vampire_state = libnet_vampire_replicate_init(s, samdb, lp);
 364         if (s->vampire_state == NULL) {
 365                 PyErr_SetString(PyExc_TypeError, "Failed to initialise vampire_state");
 366                 talloc_free(s);
 367                 return NULL;
 368         }
 369
 370         status = gensec_session_key(s->drs_pipe->pipe->conn->security_state.generic_state,
 371                                     &s->gensec_skey);
 372         if (!NT_STATUS_IS_OK(status)) {
 373                 PyErr_Format(PyExc_RuntimeError, "Unable to get session key from drspipe: %s",
 374                              nt_errstr(status));
 375                 talloc_free(s);
 376                 return NULL;
 377         }
 378
 379         s->forest.dns_name = lpcfg_dnsdomain(lp);
 380
 381         s->chunk.gensec_skey = &s->gensec_skey;
 382         s->chunk.partition = &s->partition;
 383         s->chunk.forest = &s->forest;
 384         s->chunk.dest_dsa = &s->dest_dsa;
 385
 386         return PyCObject_FromTallocPtr(s);
 387 }
 388
 389
 390 /*
 391   process one replication chunk
 392  */
 393 static PyObject *py_net_replicate_chunk(py_net_Object *self, PyObject *args, PyObject *kwargs)
 394 {
 395         const char *kwnames[] = { "state", "level", "ctr", "schema", NULL };
 396         PyObject *py_state, *py_ctr, *py_schema;
 397         struct replicate_state *s;
 398         unsigned level;
 399         NTSTATUS (*chunk_handler)(void *private_data, const struct libnet_BecomeDC_StoreChunk *c);
 400         NTSTATUS status;
 401
 402         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OIO|O",
 403                                          discard_const_p(char *, kwnames),
 404                                          &py_state, &level, &py_ctr, &py_schema)) {
 405                 return NULL;
 406         }
 407
 408         s = talloc_get_type(PyCObject_AsVoidPtr(py_state), struct replicate_state);
 409         if (!s) {
 410                 PyErr_SetString(PyExc_TypeError, "Expected replication_state");
 411                 return NULL;
 412         }
 413
 414         switch (level) {
 415         case 1:
 416                 if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr1")) {
 417                         return NULL;
 418                 }
 419                 s->chunk.ctr1                         = py_talloc_get_ptr(py_ctr);
 420                 s->partition.nc                       = *s->chunk.ctr1->naming_context;
 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                         = py_talloc_get_ptr(py_ctr);
 431                 s->partition.nc                       = *s->chunk.ctr6->naming_context;
 432                 s->partition.more_data                = s->chunk.ctr6->more_data;
 433                 s->partition.source_dsa_guid          = s->chunk.ctr6->source_dsa_guid;
 434                 s->partition.source_dsa_invocation_id = s->chunk.ctr6->source_dsa_invocation_id;
 435                 s->partition.highwatermark            = s->chunk.ctr6->new_highwatermark;
 436                 break;
 437         default:
 438                 PyErr_Format(PyExc_TypeError, "Bad level %u in replicate_chunk", level);
 439                 return NULL;
 440         }
 441
 442         chunk_handler = libnet_vampire_cb_store_chunk;
 443         if (py_schema) {
 444                 if (!PyBool_Check(py_schema)) {
 445                         PyErr_SetString(PyExc_TypeError, "Expected boolean schema");
 446                         return NULL;
 447                 }
 448                 if (py_schema == Py_True) {
 449                         chunk_handler = libnet_vampire_cb_schema_chunk;
 450                 }
 451         }
 452
 453         s->chunk.ctr_level = level;
 454
 455         status = chunk_handler(s->vampire_state, &s->chunk);
 456         if (!NT_STATUS_IS_OK(status)) {
 457                 PyErr_Format(PyExc_TypeError, "Failed to process chunk: %s", nt_errstr(status));
 458                 return NULL;
 459         }
 460
 461         Py_RETURN_NONE;
 462 }
 463
 464
 465 /*
 466   find a DC given a domain name and server type
 467  */
 468 static PyObject *py_net_finddc(py_net_Object *self, PyObject *args)
 469 {
 470         const char *domain_name;
 471         unsigned server_type;
 472         NTSTATUS status;
 473         struct finddcs *io;
 474         TALLOC_CTX *mem_ctx;
 475         PyObject *ret;
 476
 477         if (!PyArg_ParseTuple(args, "sI", &domain_name, &server_type)) {
 478                 return NULL;
 479         }
 480
 481         mem_ctx = talloc_new(self->mem_ctx);
 482
 483         io = talloc_zero(mem_ctx, struct finddcs);
 484         io->in.domain_name = domain_name;
 485         io->in.minimum_dc_flags = server_type;
 486
 487         status = finddcs_cldap(io, io,
 488                                lpcfg_resolve_context(self->libnet_ctx->lp_ctx), self->ev);
 489         if (NT_STATUS_IS_ERR(status)) {
 490                 PyErr_SetString(PyExc_RuntimeError, nt_errstr(status));
 491                 talloc_free(mem_ctx);
 492                 return NULL;
 493         }
 494
 495         ret = py_return_ndr_struct("samba.dcerpc.nbt", "NETLOGON_SAM_LOGON_RESPONSE_EX",
 496                                    io, &io->out.netlogon.data.nt5_ex);
 497         talloc_free(mem_ctx);
 498
 499         return ret;
 500 }
 501
 502
 503 static const char py_net_vampire_doc[] = "vampire(domain, target_dir=None)\n"
 504                                          "Vampire a domain.";
 505
 506 static const char py_net_replicate_init_doc[] = "replicate_init(samdb, lp, drspipe)\n"
 507                                          "Setup for replicate_chunk calls.";
 508
 509 static const char py_net_replicate_chunk_doc[] = "replicate_chunk(state, level, ctr, schema)\n"
 510                                          "Process replication for one chunk";
 511
 512 static const char py_net_finddc_doc[] = "finddc(domain, server_type)\n"
 513                                          "find a DC with the specified server_type bits. Return the DNS name";
 514
 515 static PyMethodDef net_obj_methods[] = {
 516         {"join", (PyCFunction)py_net_join, METH_VARARGS|METH_KEYWORDS, py_net_join_doc},
 517         {"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
 518         {"export_keytab", (PyCFunction)py_net_export_keytab, METH_VARARGS|METH_KEYWORDS, py_net_export_keytab_doc},
 519         {"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
 520         {"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
 521         {"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
 522         {"vampire", (PyCFunction)py_net_vampire, METH_VARARGS|METH_KEYWORDS, py_net_vampire_doc},
 523         {"replicate_init", (PyCFunction)py_net_replicate_init, METH_VARARGS|METH_KEYWORDS, py_net_replicate_init_doc},
 524         {"replicate_chunk", (PyCFunction)py_net_replicate_chunk, METH_VARARGS|METH_KEYWORDS, py_net_replicate_chunk_doc},
 525         {"finddc", (PyCFunction)py_net_finddc, METH_VARARGS, py_net_finddc_doc},
 526         { NULL }
 527 };
 528
 529 static void py_net_dealloc(py_net_Object *self)
 530 {
 531         talloc_free(self->mem_ctx);
 532 }
 533
 534 static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 535 {
 536         PyObject *py_creds, *py_lp = Py_None;
 537         const char *kwnames[] = { "creds", "lp", NULL };
 538         py_net_Object *ret;
 539         struct loadparm_context *lp;
 540
 541         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|O",
 542                         discard_const_p(char *, kwnames), &py_creds, &py_lp))
 543                 return NULL;
 544
 545         ret = PyObject_New(py_net_Object, type);
 546         if (ret == NULL) {
 547                 return NULL;
 548         }
 549
 550         /* FIXME: we really need to get a context from the caller or we may end
 551          * up with 2 event contexts */
 552         ret->ev = s4_event_context_init(NULL);
 553         ret->mem_ctx = talloc_new(ret->ev);
 554
 555         lp = lpcfg_from_py_object(ret->mem_ctx, py_lp);
 556         if (lp == NULL) {
 557                 Py_DECREF(ret);
 558                 return NULL;
 559         }
 560
 561         ret->libnet_ctx = libnet_context_init(ret->ev, lp);
 562         if (ret->libnet_ctx == NULL) {
 563                 PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
 564                 Py_DECREF(ret);
 565                 return NULL;
 566         }
 567
 568         ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
 569         if (ret->libnet_ctx->cred == NULL) {
 570                 PyErr_SetString(PyExc_TypeError, "Expected credentials object");
 571                 Py_DECREF(ret);
 572                 return NULL;
 573         }
 574
 575         return (PyObject *)ret;
 576 }
 577
 578
 579 PyTypeObject py_net_Type = {
 580         PyObject_HEAD_INIT(NULL) 0,
 581         .tp_name = "net.Net",
 582         .tp_basicsize = sizeof(py_net_Object),
 583         .tp_dealloc = (destructor)py_net_dealloc,
 584         .tp_methods = net_obj_methods,
 585         .tp_new = net_obj_new,
 586 };
 587
 588 void initnet(void)
 589 {
 590         PyObject *m;
 591
 592         if (PyType_Ready(&py_net_Type) < 0)
 593                 return;
 594
 595         m = Py_InitModule3("net", NULL, NULL);
 596         if (m == NULL)
 597                 return;
 598
 599         Py_INCREF(&py_net_Type);
 600         PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
 601         PyModule_AddObject(m, "LIBNET_JOINDOMAIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOINDOMAIN_AUTOMATIC));
 602         PyModule_AddObject(m, "LIBNET_JOINDOMAIN_SPECIFIED", PyInt_FromLong(LIBNET_JOINDOMAIN_SPECIFIED));
 603         PyModule_AddObject(m, "LIBNET_JOIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOIN_AUTOMATIC));
 604         PyModule_AddObject(m, "LIBNET_JOIN_SPECIFIED", PyInt_FromLong(LIBNET_JOIN_SPECIFIED));
 605 }