source3/libsmb/pylibsmb.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * Samba-internal work in progress Python binding for libsmbclient
   4  *
   5  * Copyright (C) Volker Lendecke 2012
   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 "libsmb/libsmb.h"
  24 #include "libcli/security/security.h"
  25 #include "system/select.h"
  26 #include "source4/libcli/util/pyerrors.h"
  27 #include "auth/credentials/pycredentials.h"
  28 #include "trans2.h"
  29
  30 static PyTypeObject *get_pytype(const char *module, const char *type)
  31 {
  32         PyObject *mod;
  33         PyTypeObject *result;
  34
  35         mod = PyImport_ImportModule(module);
  36         if (mod == NULL) {
  37                 PyErr_Format(PyExc_RuntimeError,
  38                              "Unable to import %s to check type %s",
  39                              module, type);
  40                 return NULL;
  41         }
  42         result = (PyTypeObject *)PyObject_GetAttrString(mod, type);
  43         Py_DECREF(mod);
  44         if (result == NULL) {
  45                 PyErr_Format(PyExc_RuntimeError,
  46                              "Unable to find type %s in module %s",
  47                              module, type);
  48                 return NULL;
  49         }
  50         return result;
  51 }
  52
  53 /*
  54  * We're using "const char **" for keywords,
  55  * PyArg_ParseTupleAndKeywords expects a "char **". Confine the
  56  * inevitable warnings to just one place.
  57  */
  58 static int ParseTupleAndKeywords(PyObject *args, PyObject *kw,
  59                                  const char *format, const char **keywords,
  60                                  ...)
  61 {
  62         va_list a;
  63         int ret;
  64         va_start(a, keywords);
  65         ret = PyArg_VaParseTupleAndKeywords(args, kw, format,
  66                                             (char **)keywords, a);
  67         va_end(a);
  68         return ret;
  69 }
  70
  71 struct py_cli_thread;
  72
  73 struct py_cli_state {
  74         PyObject_HEAD
  75         struct cli_state *cli;
  76         struct tevent_context *ev;
  77         struct py_cli_thread *thread_state;
  78 };
  79
  80 #if HAVE_PTHREAD
  81
  82 #include <pthread.h>
  83
  84 struct py_cli_thread {
  85
  86         /*
  87          * Pipe to make the poll thread wake up in our destructor, so
  88          * that we can exit and join the thread.
  89          */
  90         int shutdown_pipe[2];
  91         struct tevent_fd *shutdown_fde;
  92         bool do_shutdown;
  93         pthread_t id;
  94
  95         /*
  96          * Thread state to release the GIL during the poll(2) syscall
  97          */
  98         PyThreadState *py_threadstate;
  99 };
 100
 101 static void *py_cli_state_poll_thread(void *private_data)
 102 {
 103         struct py_cli_state *self = (struct py_cli_state *)private_data;
 104         struct py_cli_thread *t = self->thread_state;
 105         PyGILState_STATE gstate;
 106
 107         gstate = PyGILState_Ensure();
 108
 109         while (!t->do_shutdown) {
 110                 int ret;
 111                 ret = tevent_loop_once(self->ev);
 112                 assert(ret == 0);
 113         }
 114         PyGILState_Release(gstate);
 115         return NULL;
 116 }
 117
 118 static void py_cli_state_trace_callback(enum tevent_trace_point point,
 119                                         void *private_data)
 120 {
 121         struct py_cli_state *self = (struct py_cli_state *)private_data;
 122         struct py_cli_thread *t = self->thread_state;
 123
 124         switch(point) {
 125         case TEVENT_TRACE_BEFORE_WAIT:
 126                 assert(t->py_threadstate == NULL);
 127                 t->py_threadstate = PyEval_SaveThread();
 128                 break;
 129         case TEVENT_TRACE_AFTER_WAIT:
 130                 assert(t->py_threadstate != NULL);
 131                 PyEval_RestoreThread(t->py_threadstate);
 132                 t->py_threadstate = NULL;
 133                 break;
 134         default:
 135                 break;
 136         }
 137 }
 138
 139 static void py_cli_state_shutdown_handler(struct tevent_context *ev,
 140                                           struct tevent_fd *fde,
 141                                           uint16_t flags,
 142                                           void *private_data)
 143 {
 144         struct py_cli_state *self = (struct py_cli_state *)private_data;
 145         struct py_cli_thread *t = self->thread_state;
 146
 147         if ((flags & TEVENT_FD_READ) == 0) {
 148                 return;
 149         }
 150         TALLOC_FREE(t->shutdown_fde);
 151         t->do_shutdown = true;
 152 }
 153
 154 static int py_cli_thread_destructor(struct py_cli_thread *t)
 155 {
 156         char c = 0;
 157         ssize_t written;
 158         int ret;
 159
 160         do {
 161                 /*
 162                  * This will wake the poll thread from the poll(2)
 163                  */
 164                 written = write(t->shutdown_pipe[1], &c, 1);
 165         } while ((written == -1) && (errno == EINTR));
 166
 167         /*
 168          * Allow the poll thread to do its own cleanup under the GIL
 169          */
 170         Py_BEGIN_ALLOW_THREADS
 171         ret = pthread_join(t->id, NULL);
 172         Py_END_ALLOW_THREADS
 173         assert(ret == 0);
 174
 175         if (t->shutdown_pipe[0] != -1) {
 176                 close(t->shutdown_pipe[0]);
 177                 t->shutdown_pipe[0] = -1;
 178         }
 179         if (t->shutdown_pipe[1] != -1) {
 180                 close(t->shutdown_pipe[1]);
 181                 t->shutdown_pipe[1] = -1;
 182         }
 183         return 0;
 184 }
 185
 186 static bool py_cli_state_setup_ev(struct py_cli_state *self)
 187 {
 188         struct py_cli_thread *t = NULL;
 189         int ret;
 190
 191         self->ev = tevent_context_init_byname(NULL, "poll_mt");
 192         if (self->ev == NULL) {
 193                 goto fail;
 194         }
 195         tevent_set_trace_callback(self->ev, py_cli_state_trace_callback, self);
 196
 197         self->thread_state = talloc_zero(NULL, struct py_cli_thread);
 198         if (self->thread_state == NULL) {
 199                 goto fail;
 200         }
 201         t = self->thread_state;
 202
 203         ret = pipe(t->shutdown_pipe);
 204         if (ret == -1) {
 205                 goto fail;
 206         }
 207         t->shutdown_fde = tevent_add_fd(
 208                 self->ev, self->ev, t->shutdown_pipe[0], TEVENT_FD_READ,
 209                 py_cli_state_shutdown_handler, self);
 210         if (t->shutdown_fde == NULL) {
 211                 goto fail;
 212         }
 213
 214         PyEval_InitThreads();
 215
 216         ret = pthread_create(&t->id, NULL, py_cli_state_poll_thread, self);
 217         if (ret != 0) {
 218                 goto fail;
 219         }
 220         talloc_set_destructor(self->thread_state, py_cli_thread_destructor);
 221         return true;
 222
 223 fail:
 224         if (t != NULL) {
 225                 TALLOC_FREE(t->shutdown_fde);
 226
 227                 if (t->shutdown_pipe[0] != -1) {
 228                         close(t->shutdown_pipe[0]);
 229                         t->shutdown_pipe[0] = -1;
 230                 }
 231                 if (t->shutdown_pipe[1] != -1) {
 232                         close(t->shutdown_pipe[1]);
 233                         t->shutdown_pipe[1] = -1;
 234                 }
 235         }
 236
 237         TALLOC_FREE(self->thread_state);
 238         TALLOC_FREE(self->ev);
 239         return false;
 240 }
 241
 242 struct py_tevent_cond {
 243         pthread_mutex_t mutex;
 244         pthread_cond_t cond;
 245         bool is_done;
 246 };
 247
 248 static void py_tevent_signalme(struct tevent_req *req);
 249
 250 static int py_tevent_cond_wait(struct py_tevent_cond *cond)
 251 {
 252         int ret, result;
 253
 254         result = pthread_mutex_init(&cond->mutex, NULL);
 255         if (result != 0) {
 256                 goto fail;
 257         }
 258         result = pthread_cond_init(&cond->cond, NULL);
 259         if (result != 0) {
 260                 goto fail_mutex;
 261         }
 262
 263         result = pthread_mutex_lock(&cond->mutex);
 264         if (result != 0) {
 265                 goto fail_cond;
 266         }
 267
 268         cond->is_done = false;
 269
 270         while (!cond->is_done) {
 271
 272                 Py_BEGIN_ALLOW_THREADS
 273                 result = pthread_cond_wait(&cond->cond, &cond->mutex);
 274                 Py_END_ALLOW_THREADS
 275
 276                 if (result != 0) {
 277                         goto fail_unlock;
 278                 }
 279         }
 280
 281 fail_unlock:
 282         ret = pthread_mutex_unlock(&cond->mutex);
 283         assert(ret == 0);
 284 fail_cond:
 285         ret = pthread_cond_destroy(&cond->cond);
 286         assert(ret == 0);
 287 fail_mutex:
 288         ret = pthread_mutex_destroy(&cond->mutex);
 289         assert(ret == 0);
 290 fail:
 291         return result;
 292 }
 293
 294 static int py_tevent_req_wait(struct tevent_context *ev,
 295                               struct tevent_req *req)
 296 {
 297         struct py_tevent_cond cond;
 298         tevent_req_set_callback(req, py_tevent_signalme, &cond);
 299         return py_tevent_cond_wait(&cond);
 300 }
 301
 302 static void py_tevent_signalme(struct tevent_req *req)
 303 {
 304         struct py_tevent_cond *cond = (struct py_tevent_cond *)
 305                 tevent_req_callback_data_void(req);
 306         int ret;
 307
 308         ret = pthread_mutex_lock(&cond->mutex);
 309         assert(ret == 0);
 310
 311         cond->is_done = true;
 312
 313         ret = pthread_cond_signal(&cond->cond);
 314         assert(ret == 0);
 315         ret = pthread_mutex_unlock(&cond->mutex);
 316         assert(ret == 0);
 317 }
 318
 319 #else
 320
 321 static bool py_cli_state_setup_ev(struct py_cli_state *self)
 322 {
 323         self->ev = tevent_context_init(NULL);
 324         return (self->ev != NULL);
 325 }
 326
 327 static int py_tevent_req_wait(struct tevent_context *ev,
 328                               struct tevent_req *req)
 329 {
 330         while (tevent_req_is_in_progress(req)) {
 331                 int ret;
 332
 333                 ret = tevent_loop_once(ev);
 334                 if (ret != 0) {
 335                         return ret;
 336                 }
 337         }
 338         return 0;
 339 }
 340
 341 #endif
 342
 343 static bool py_tevent_req_wait_exc(struct tevent_context *ev,
 344                                    struct tevent_req *req)
 345 {
 346         int ret;
 347
 348         if (req == NULL) {
 349                 PyErr_NoMemory();
 350                 return false;
 351         }
 352         ret = py_tevent_req_wait(ev, req);
 353         if (ret != 0) {
 354                 TALLOC_FREE(req);
 355                 errno = ret;
 356                 PyErr_SetFromErrno(PyExc_RuntimeError);
 357                 return false;
 358         }
 359         return true;
 360 }
 361
 362 static PyObject *py_cli_state_new(PyTypeObject *type, PyObject *args,
 363                                   PyObject *kwds)
 364 {
 365         struct py_cli_state *self;
 366
 367         self = (struct py_cli_state *)type->tp_alloc(type, 0);
 368         if (self == NULL) {
 369                 return NULL;
 370         }
 371         self->cli = NULL;
 372         self->ev = NULL;
 373         self->thread_state = NULL;
 374         return (PyObject *)self;
 375 }
 376
 377 static int py_cli_state_init(struct py_cli_state *self, PyObject *args,
 378                              PyObject *kwds)
 379 {
 380         NTSTATUS status;
 381         char *host, *share;
 382         PyObject *creds;
 383         struct cli_credentials *cli_creds;
 384         bool ret;
 385
 386         static const char *kwlist[] = {
 387                 "host", "share", "credentials", NULL
 388         };
 389
 390         PyTypeObject *py_type_Credentials = get_pytype(
 391                 "samba.credentials", "Credentials");
 392         if (py_type_Credentials == NULL) {
 393                 return -1;
 394         }
 395
 396         ret = ParseTupleAndKeywords(
 397                 args, kwds, "ss|O!", kwlist,
 398                 &host, &share, py_type_Credentials, &creds);
 399
 400         Py_DECREF(py_type_Credentials);
 401
 402         if (!ret) {
 403                 return -1;
 404         }
 405
 406         if (!py_cli_state_setup_ev(self)) {
 407                 return -1;
 408         }
 409
 410         cli_creds = cli_credentials_from_py_object(creds);
 411         if (cli_creds == NULL) {
 412                 PyErr_SetString(PyExc_TypeError, "Expected credentials");
 413                 return -1;
 414         }
 415
 416         status = cli_full_connection(
 417                 &self->cli, "myname", host, NULL, 0, share, "?????",
 418                 cli_credentials_get_username(cli_creds),
 419                 cli_credentials_get_domain(cli_creds),
 420                 cli_credentials_get_password(cli_creds),
 421                 0, 0);
 422         if (!NT_STATUS_IS_OK(status)) {
 423                 PyErr_SetNTSTATUS(status);
 424                 return -1;
 425         }
 426         return 0;
 427 }
 428
 429 static void py_cli_state_dealloc(struct py_cli_state *self)
 430 {
 431         TALLOC_FREE(self->thread_state);
 432         TALLOC_FREE(self->ev);
 433
 434         if (self->cli != NULL) {
 435                 cli_shutdown(self->cli);
 436                 self->cli = NULL;
 437         }
 438         self->ob_type->tp_free((PyObject *)self);
 439 }
 440
 441 static PyObject *py_cli_create(struct py_cli_state *self, PyObject *args,
 442                                PyObject *kwds)
 443 {
 444         char *fname;
 445         unsigned CreateFlags = 0;
 446         unsigned DesiredAccess = FILE_GENERIC_READ;
 447         unsigned FileAttributes = 0;
 448         unsigned ShareAccess = 0;
 449         unsigned CreateDisposition = FILE_OPEN;
 450         unsigned CreateOptions = 0;
 451         unsigned SecurityFlags = 0;
 452         uint16_t fnum;
 453         struct tevent_req *req;
 454         NTSTATUS status;
 455
 456         static const char *kwlist[] = {
 457                 "Name", "CreateFlags", "DesiredAccess", "FileAttributes",
 458                 "ShareAccess", "CreateDisposition", "CreateOptions",
 459                 "SecurityFlags", NULL };
 460
 461         if (!ParseTupleAndKeywords(
 462                     args, kwds, "s|IIIIIII", kwlist,
 463                     &fname, &CreateFlags, &DesiredAccess, &FileAttributes,
 464                     &ShareAccess, &CreateDisposition, &CreateOptions,
 465                     &SecurityFlags)) {
 466                 return NULL;
 467         }
 468
 469         req = cli_ntcreate_send(NULL, self->ev, self->cli, fname, CreateFlags,
 470                                 DesiredAccess, FileAttributes, ShareAccess,
 471                                 CreateDisposition, CreateOptions,
 472                                 SecurityFlags);
 473         if (!py_tevent_req_wait_exc(self->ev, req)) {
 474                 return NULL;
 475         }
 476         status = cli_ntcreate_recv(req, &fnum);
 477         TALLOC_FREE(req);
 478
 479         if (!NT_STATUS_IS_OK(status)) {
 480                 PyErr_SetNTSTATUS(status);
 481                 return NULL;
 482         }
 483         return Py_BuildValue("I", (unsigned)fnum);
 484 }
 485
 486 static PyObject *py_cli_close(struct py_cli_state *self, PyObject *args)
 487 {
 488         struct tevent_req *req;
 489         int fnum;
 490         NTSTATUS status;
 491
 492         if (!PyArg_ParseTuple(args, "i", &fnum)) {
 493                 return NULL;
 494         }
 495
 496         req = cli_close_send(NULL, self->ev, self->cli, fnum);
 497         if (!py_tevent_req_wait_exc(self->ev, req)) {
 498                 return NULL;
 499         }
 500         status = cli_close_recv(req);
 501         TALLOC_FREE(req);
 502
 503         if (!NT_STATUS_IS_OK(status)) {
 504                 PyErr_SetNTSTATUS(status);
 505                 return NULL;
 506         }
 507         Py_INCREF(Py_None);
 508         return Py_None;
 509 }
 510
 511 static PyObject *py_cli_write(struct py_cli_state *self, PyObject *args,
 512                               PyObject *kwds)
 513 {
 514         int fnum;
 515         unsigned mode = 0;
 516         char *buf;
 517         int buflen;
 518         unsigned long long offset;
 519         struct tevent_req *req;
 520         NTSTATUS status;
 521         size_t written;
 522
 523         static const char *kwlist[] = {
 524                 "fnum", "buffer", "offset", "mode", NULL };
 525
 526         if (!ParseTupleAndKeywords(
 527                     args, kwds, "Is#K|I", kwlist,
 528                     &fnum, &buf, &buflen, &offset, &mode)) {
 529                 return NULL;
 530         }
 531
 532         req = cli_write_andx_send(NULL, self->ev, self->cli, fnum, mode,
 533                                   (uint8_t *)buf, offset, buflen);
 534         if (!py_tevent_req_wait_exc(self->ev, req)) {
 535                 return NULL;
 536         }
 537         status = cli_write_andx_recv(req, &written);
 538         TALLOC_FREE(req);
 539
 540         if (!NT_STATUS_IS_OK(status)) {
 541                 PyErr_SetNTSTATUS(status);
 542                 return NULL;
 543         }
 544         return Py_BuildValue("K", (unsigned long long)written);
 545 }
 546
 547 static PyObject *py_cli_read(struct py_cli_state *self, PyObject *args,
 548                              PyObject *kwds)
 549 {
 550         int fnum;
 551         unsigned long long offset;
 552         unsigned size;
 553         struct tevent_req *req;
 554         NTSTATUS status;
 555         uint8_t *buf;
 556         ssize_t buflen;
 557         PyObject *result;
 558
 559         static const char *kwlist[] = {
 560                 "fnum", "offset", "size", NULL };
 561
 562         if (!ParseTupleAndKeywords(
 563                     args, kwds, "IKI", kwlist, &fnum, &offset,
 564                     &size)) {
 565                 return NULL;
 566         }
 567
 568         req = cli_read_andx_send(NULL, self->ev, self->cli, fnum,
 569                                  offset, size);
 570         if (!py_tevent_req_wait_exc(self->ev, req)) {
 571                 return NULL;
 572         }
 573         status = cli_read_andx_recv(req, &buflen, &buf);
 574
 575         if (!NT_STATUS_IS_OK(status)) {
 576                 TALLOC_FREE(req);
 577                 PyErr_SetNTSTATUS(status);
 578                 return NULL;
 579         }
 580         result = Py_BuildValue("s#", (char *)buf, (int)buflen);
 581         TALLOC_FREE(req);
 582         return result;
 583 }
 584
 585 static PyObject *py_cli_ftruncate(struct py_cli_state *self, PyObject *args,
 586                                   PyObject *kwds)
 587 {
 588         int fnum;
 589         unsigned long long size;
 590         struct tevent_req *req;
 591         NTSTATUS status;
 592
 593         static const char *kwlist[] = {
 594                 "fnum", "size", NULL };
 595
 596         if (!ParseTupleAndKeywords(
 597                     args, kwds, "IK", kwlist, &fnum, &size)) {
 598                 return NULL;
 599         }
 600
 601         req = cli_ftruncate_send(NULL, self->ev, self->cli, fnum, size);
 602         if (!py_tevent_req_wait_exc(self->ev, req)) {
 603                 return NULL;
 604         }
 605         status = cli_ftruncate_recv(req);
 606         TALLOC_FREE(req);
 607
 608         if (!NT_STATUS_IS_OK(status)) {
 609                 PyErr_SetNTSTATUS(status);
 610                 return NULL;
 611         }
 612         Py_INCREF(Py_None);
 613         return Py_None;
 614 }
 615
 616 static PyObject *py_cli_delete_on_close(struct py_cli_state *self,
 617                                         PyObject *args,
 618                                         PyObject *kwds)
 619 {
 620         unsigned fnum, flag;
 621         struct tevent_req *req;
 622         NTSTATUS status;
 623
 624         static const char *kwlist[] = {
 625                 "fnum", "flag", NULL };
 626
 627         if (!ParseTupleAndKeywords(
 628                     args, kwds, "II", kwlist, &fnum, &flag)) {
 629                 return NULL;
 630         }
 631
 632         req = cli_nt_delete_on_close_send(NULL, self->ev, self->cli, fnum,
 633                                           flag);
 634         if (!py_tevent_req_wait_exc(self->ev, req)) {
 635                 return NULL;
 636         }
 637         status = cli_nt_delete_on_close_recv(req);
 638         TALLOC_FREE(req);
 639
 640         if (!NT_STATUS_IS_OK(status)) {
 641                 PyErr_SetNTSTATUS(status);
 642                 return NULL;
 643         }
 644         Py_INCREF(Py_None);
 645         return Py_None;
 646 }
 647
 648 static PyObject *py_cli_list(struct py_cli_state *self,
 649                              PyObject *args,
 650                              PyObject *kwds)
 651 {
 652         char *mask;
 653         unsigned attribute =
 654                 FILE_ATTRIBUTE_DIRECTORY |
 655                 FILE_ATTRIBUTE_SYSTEM |
 656                 FILE_ATTRIBUTE_HIDDEN;
 657         unsigned info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
 658         struct tevent_req *req;
 659         NTSTATUS status;
 660         struct file_info *finfos;
 661         size_t i, num_finfos;
 662         PyObject *result;
 663
 664         const char *kwlist[] = {
 665                 "mask", "attribute", "info_level", NULL
 666         };
 667
 668         if (!ParseTupleAndKeywords(
 669                     args, kwds, "s|II", kwlist,
 670                     &mask, &attribute, &info_level)) {
 671                 return NULL;
 672         }
 673
 674         req = cli_list_send(NULL, self->ev, self->cli, mask, attribute,
 675                             info_level);
 676         if (!py_tevent_req_wait_exc(self->ev, req)) {
 677                 return NULL;
 678         }
 679         status = cli_list_recv(req, NULL, &finfos, &num_finfos);
 680         TALLOC_FREE(req);
 681
 682         if (!NT_STATUS_IS_OK(status)) {
 683                 PyErr_SetNTSTATUS(status);
 684                 return NULL;
 685         }
 686
 687         result = Py_BuildValue("[]");
 688         if (result == NULL) {
 689                 return NULL;
 690         }
 691
 692         for (i=0; i<num_finfos; i++) {
 693                 struct file_info *finfo = &finfos[i];
 694                 PyObject *file;
 695                 int ret;
 696
 697                 file = Py_BuildValue(
 698                         "{s:s,s:i}",
 699                         "name", finfo->name,
 700                         "mode", (int)finfo->mode);
 701                 if (file == NULL) {
 702                         Py_XDECREF(result);
 703                         return NULL;
 704                 }
 705
 706                 ret = PyList_Append(result, file);
 707                 if (ret == -1) {
 708                         Py_XDECREF(result);
 709                         return NULL;
 710                 }
 711         }
 712
 713         return result;
 714 }
 715
 716 static PyMethodDef py_cli_state_methods[] = {
 717         { "create", (PyCFunction)py_cli_create, METH_VARARGS|METH_KEYWORDS,
 718           "Open a file" },
 719         { "close", (PyCFunction)py_cli_close, METH_VARARGS,
 720           "Close a file handle" },
 721         { "write", (PyCFunction)py_cli_write, METH_VARARGS|METH_KEYWORDS,
 722           "Write to a file handle" },
 723         { "read", (PyCFunction)py_cli_read, METH_VARARGS|METH_KEYWORDS,
 724           "Read from a file handle" },
 725         { "truncate", (PyCFunction)py_cli_ftruncate,
 726           METH_VARARGS|METH_KEYWORDS,
 727           "Truncate a file" },
 728         { "delete_on_close", (PyCFunction)py_cli_delete_on_close,
 729           METH_VARARGS|METH_KEYWORDS,
 730           "Set/Reset the delete on close flag" },
 731         { "readdir", (PyCFunction)py_cli_list,
 732           METH_VARARGS|METH_KEYWORDS,
 733           "List a directory" },
 734         { NULL, NULL, 0, NULL }
 735 };
 736
 737 static PyTypeObject py_cli_state_type = {
 738         PyObject_HEAD_INIT(NULL)
 739         .tp_name = "libsmb_samba_internal.Conn",
 740         .tp_basicsize = sizeof(struct py_cli_state),
 741         .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
 742         .tp_doc = "libsmb connection",
 743         .tp_new = py_cli_state_new,
 744         .tp_init = (initproc)py_cli_state_init,
 745         .tp_dealloc = (destructor)py_cli_state_dealloc,
 746         .tp_methods = py_cli_state_methods,
 747 };
 748
 749 static PyMethodDef py_libsmb_methods[] = {
 750         { NULL },
 751 };
 752
 753 void initlibsmb_samba_internal(void);
 754 void initlibsmb_samba_internal(void)
 755 {
 756         PyObject *m;
 757
 758         talloc_stackframe();
 759
 760         m = Py_InitModule3("libsmb_samba_internal", py_libsmb_methods,
 761                            "libsmb wrapper");
 762
 763         if (PyType_Ready(&py_cli_state_type) < 0) {
 764                 return;
 765         }
 766         Py_INCREF(&py_cli_state_type);
 767         PyModule_AddObject(m, "Conn", (PyObject *)&py_cli_state_type);
 768 }