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_oplock_break {
  74         uint16_t fnum;
  75         uint8_t level;
  76 };
  77
  78 struct py_cli_state {
  79         PyObject_HEAD
  80         struct cli_state *cli;
  81         struct tevent_context *ev;
  82         struct py_cli_thread *thread_state;
  83
  84         struct tevent_req *oplock_waiter;
  85         struct py_cli_oplock_break *oplock_breaks;
  86         struct py_tevent_cond *oplock_cond;
  87 };
  88
  89 #if HAVE_PTHREAD
  90
  91 #include <pthread.h>
  92
  93 struct py_cli_thread {
  94
  95         /*
  96          * Pipe to make the poll thread wake up in our destructor, so
  97          * that we can exit and join the thread.
  98          */
  99         int shutdown_pipe[2];
 100         struct tevent_fd *shutdown_fde;
 101         bool do_shutdown;
 102         pthread_t id;
 103
 104         /*
 105          * Thread state to release the GIL during the poll(2) syscall
 106          */
 107         PyThreadState *py_threadstate;
 108 };
 109
 110 static void *py_cli_state_poll_thread(void *private_data)
 111 {
 112         struct py_cli_state *self = (struct py_cli_state *)private_data;
 113         struct py_cli_thread *t = self->thread_state;
 114         PyGILState_STATE gstate;
 115
 116         gstate = PyGILState_Ensure();
 117
 118         while (!t->do_shutdown) {
 119                 int ret;
 120                 ret = tevent_loop_once(self->ev);
 121                 assert(ret == 0);
 122         }
 123         PyGILState_Release(gstate);
 124         return NULL;
 125 }
 126
 127 static void py_cli_state_trace_callback(enum tevent_trace_point point,
 128                                         void *private_data)
 129 {
 130         struct py_cli_state *self = (struct py_cli_state *)private_data;
 131         struct py_cli_thread *t = self->thread_state;
 132
 133         switch(point) {
 134         case TEVENT_TRACE_BEFORE_WAIT:
 135                 assert(t->py_threadstate == NULL);
 136                 t->py_threadstate = PyEval_SaveThread();
 137                 break;
 138         case TEVENT_TRACE_AFTER_WAIT:
 139                 assert(t->py_threadstate != NULL);
 140                 PyEval_RestoreThread(t->py_threadstate);
 141                 t->py_threadstate = NULL;
 142                 break;
 143         default:
 144                 break;
 145         }
 146 }
 147
 148 static void py_cli_state_shutdown_handler(struct tevent_context *ev,
 149                                           struct tevent_fd *fde,
 150                                           uint16_t flags,
 151                                           void *private_data)
 152 {
 153         struct py_cli_state *self = (struct py_cli_state *)private_data;
 154         struct py_cli_thread *t = self->thread_state;
 155
 156         if ((flags & TEVENT_FD_READ) == 0) {
 157                 return;
 158         }
 159         TALLOC_FREE(t->shutdown_fde);
 160         t->do_shutdown = true;
 161 }
 162
 163 static int py_cli_thread_destructor(struct py_cli_thread *t)
 164 {
 165         char c = 0;
 166         ssize_t written;
 167         int ret;
 168
 169         do {
 170                 /*
 171                  * This will wake the poll thread from the poll(2)
 172                  */
 173                 written = write(t->shutdown_pipe[1], &c, 1);
 174         } while ((written == -1) && (errno == EINTR));
 175
 176         /*
 177          * Allow the poll thread to do its own cleanup under the GIL
 178          */
 179         Py_BEGIN_ALLOW_THREADS
 180         ret = pthread_join(t->id, NULL);
 181         Py_END_ALLOW_THREADS
 182         assert(ret == 0);
 183
 184         if (t->shutdown_pipe[0] != -1) {
 185                 close(t->shutdown_pipe[0]);
 186                 t->shutdown_pipe[0] = -1;
 187         }
 188         if (t->shutdown_pipe[1] != -1) {
 189                 close(t->shutdown_pipe[1]);
 190                 t->shutdown_pipe[1] = -1;
 191         }
 192         return 0;
 193 }
 194
 195 static bool py_cli_state_setup_ev(struct py_cli_state *self)
 196 {
 197         struct py_cli_thread *t = NULL;
 198         int ret;
 199
 200         self->ev = tevent_context_init_byname(NULL, "poll_mt");
 201         if (self->ev == NULL) {
 202                 goto fail;
 203         }
 204         tevent_set_trace_callback(self->ev, py_cli_state_trace_callback, self);
 205
 206         self->thread_state = talloc_zero(NULL, struct py_cli_thread);
 207         if (self->thread_state == NULL) {
 208                 goto fail;
 209         }
 210         t = self->thread_state;
 211
 212         ret = pipe(t->shutdown_pipe);
 213         if (ret == -1) {
 214                 goto fail;
 215         }
 216         t->shutdown_fde = tevent_add_fd(
 217                 self->ev, self->ev, t->shutdown_pipe[0], TEVENT_FD_READ,
 218                 py_cli_state_shutdown_handler, self);
 219         if (t->shutdown_fde == NULL) {
 220                 goto fail;
 221         }
 222
 223         PyEval_InitThreads();
 224
 225         ret = pthread_create(&t->id, NULL, py_cli_state_poll_thread, self);
 226         if (ret != 0) {
 227                 goto fail;
 228         }
 229         talloc_set_destructor(self->thread_state, py_cli_thread_destructor);
 230         return true;
 231
 232 fail:
 233         if (t != NULL) {
 234                 TALLOC_FREE(t->shutdown_fde);
 235
 236                 if (t->shutdown_pipe[0] != -1) {
 237                         close(t->shutdown_pipe[0]);
 238                         t->shutdown_pipe[0] = -1;
 239                 }
 240                 if (t->shutdown_pipe[1] != -1) {
 241                         close(t->shutdown_pipe[1]);
 242                         t->shutdown_pipe[1] = -1;
 243                 }
 244         }
 245
 246         TALLOC_FREE(self->thread_state);
 247         TALLOC_FREE(self->ev);
 248         return false;
 249 }
 250
 251 struct py_tevent_cond {
 252         pthread_mutex_t mutex;
 253         pthread_cond_t cond;
 254         bool is_done;
 255 };
 256
 257 static void py_tevent_signalme(struct tevent_req *req);
 258
 259 static int py_tevent_cond_wait(struct py_tevent_cond *cond)
 260 {
 261         int ret, result;
 262
 263         result = pthread_mutex_init(&cond->mutex, NULL);
 264         if (result != 0) {
 265                 goto fail;
 266         }
 267         result = pthread_cond_init(&cond->cond, NULL);
 268         if (result != 0) {
 269                 goto fail_mutex;
 270         }
 271
 272         result = pthread_mutex_lock(&cond->mutex);
 273         if (result != 0) {
 274                 goto fail_cond;
 275         }
 276
 277         cond->is_done = false;
 278
 279         while (!cond->is_done) {
 280
 281                 Py_BEGIN_ALLOW_THREADS
 282                 result = pthread_cond_wait(&cond->cond, &cond->mutex);
 283                 Py_END_ALLOW_THREADS
 284
 285                 if (result != 0) {
 286                         goto fail_unlock;
 287                 }
 288         }
 289
 290 fail_unlock:
 291         ret = pthread_mutex_unlock(&cond->mutex);
 292         assert(ret == 0);
 293 fail_cond:
 294         ret = pthread_cond_destroy(&cond->cond);
 295         assert(ret == 0);
 296 fail_mutex:
 297         ret = pthread_mutex_destroy(&cond->mutex);
 298         assert(ret == 0);
 299 fail:
 300         return result;
 301 }
 302
 303 static int py_tevent_req_wait(struct tevent_context *ev,
 304                               struct tevent_req *req)
 305 {
 306         struct py_tevent_cond cond;
 307         tevent_req_set_callback(req, py_tevent_signalme, &cond);
 308         return py_tevent_cond_wait(&cond);
 309 }
 310
 311 static void py_tevent_cond_signal(struct py_tevent_cond *cond)
 312 {
 313         int ret;
 314
 315         ret = pthread_mutex_lock(&cond->mutex);
 316         assert(ret == 0);
 317
 318         cond->is_done = true;
 319
 320         ret = pthread_cond_signal(&cond->cond);
 321         assert(ret == 0);
 322         ret = pthread_mutex_unlock(&cond->mutex);
 323         assert(ret == 0);
 324 }
 325
 326 static void py_tevent_signalme(struct tevent_req *req)
 327 {
 328         struct py_tevent_cond *cond = (struct py_tevent_cond *)
 329                 tevent_req_callback_data_void(req);
 330
 331         py_tevent_cond_signal(cond);
 332 }
 333
 334 #else
 335
 336 static bool py_cli_state_setup_ev(struct py_cli_state *self)
 337 {
 338         self->ev = tevent_context_init(NULL);
 339         return (self->ev != NULL);
 340 }
 341
 342 static int py_tevent_req_wait(struct tevent_context *ev,
 343                               struct tevent_req *req)
 344 {
 345         while (tevent_req_is_in_progress(req)) {
 346                 int ret;
 347
 348                 ret = tevent_loop_once(ev);
 349                 if (ret != 0) {
 350                         return ret;
 351                 }
 352         }
 353         return 0;
 354 }
 355
 356 #endif
 357
 358 static bool py_tevent_req_wait_exc(struct tevent_context *ev,
 359                                    struct tevent_req *req)
 360 {
 361         int ret;
 362
 363         if (req == NULL) {
 364                 PyErr_NoMemory();
 365                 return false;
 366         }
 367         ret = py_tevent_req_wait(ev, req);
 368         if (ret != 0) {
 369                 TALLOC_FREE(req);
 370                 errno = ret;
 371                 PyErr_SetFromErrno(PyExc_RuntimeError);
 372                 return false;
 373         }
 374         return true;
 375 }
 376
 377 static PyObject *py_cli_state_new(PyTypeObject *type, PyObject *args,
 378                                   PyObject *kwds)
 379 {
 380         struct py_cli_state *self;
 381
 382         self = (struct py_cli_state *)type->tp_alloc(type, 0);
 383         if (self == NULL) {
 384                 return NULL;
 385         }
 386         self->cli = NULL;
 387         self->ev = NULL;
 388         self->thread_state = NULL;
 389         self->oplock_waiter = NULL;
 390         self->oplock_cond = NULL;
 391         self->oplock_breaks = NULL;
 392         return (PyObject *)self;
 393 }
 394
 395 static void py_cli_got_oplock_break(struct tevent_req *req);
 396
 397 static int py_cli_state_init(struct py_cli_state *self, PyObject *args,
 398                              PyObject *kwds)
 399 {
 400         NTSTATUS status;
 401         char *host, *share;
 402         PyObject *creds;
 403         struct cli_credentials *cli_creds;
 404         bool ret;
 405
 406         static const char *kwlist[] = {
 407                 "host", "share", "credentials", NULL
 408         };
 409
 410         PyTypeObject *py_type_Credentials = get_pytype(
 411                 "samba.credentials", "Credentials");
 412         if (py_type_Credentials == NULL) {
 413                 return -1;
 414         }
 415
 416         ret = ParseTupleAndKeywords(
 417                 args, kwds, "ss|O!", kwlist,
 418                 &host, &share, py_type_Credentials, &creds);
 419
 420         Py_DECREF(py_type_Credentials);
 421
 422         if (!ret) {
 423                 return -1;
 424         }
 425
 426         if (!py_cli_state_setup_ev(self)) {
 427                 return -1;
 428         }
 429
 430         cli_creds = cli_credentials_from_py_object(creds);
 431         if (cli_creds == NULL) {
 432                 PyErr_SetString(PyExc_TypeError, "Expected credentials");
 433                 return -1;
 434         }
 435
 436         status = cli_full_connection(
 437                 &self->cli, "myname", host, NULL, 0, share, "?????",
 438                 cli_credentials_get_username(cli_creds),
 439                 cli_credentials_get_domain(cli_creds),
 440                 cli_credentials_get_password(cli_creds),
 441                 0, 0);
 442         if (!NT_STATUS_IS_OK(status)) {
 443                 PyErr_SetNTSTATUS(status);
 444                 return -1;
 445         }
 446
 447         self->oplock_waiter = cli_smb_oplock_break_waiter_send(
 448                 self->ev, self->ev, self->cli);
 449         if (self->oplock_waiter == NULL) {
 450                 PyErr_NoMemory();
 451                 return -1;
 452         }
 453         tevent_req_set_callback(self->oplock_waiter, py_cli_got_oplock_break,
 454                                 self);
 455         return 0;
 456 }
 457
 458 static void py_cli_got_oplock_break(struct tevent_req *req)
 459 {
 460         struct py_cli_state *self = (struct py_cli_state *)
 461                 tevent_req_callback_data_void(req);
 462         struct py_cli_oplock_break b;
 463         struct py_cli_oplock_break *tmp;
 464         size_t num_breaks;
 465         NTSTATUS status;
 466
 467         status = cli_smb_oplock_break_waiter_recv(req, &b.fnum, &b.level);
 468         TALLOC_FREE(req);
 469         self->oplock_waiter = NULL;
 470
 471         if (!NT_STATUS_IS_OK(status)) {
 472                 return;
 473         }
 474
 475         num_breaks = talloc_array_length(self->oplock_breaks);
 476         tmp = talloc_realloc(self->ev, self->oplock_breaks,
 477                              struct py_cli_oplock_break, num_breaks+1);
 478         if (tmp == NULL) {
 479                 return;
 480         }
 481         self->oplock_breaks = tmp;
 482         self->oplock_breaks[num_breaks] = b;
 483
 484         if (self->oplock_cond != NULL) {
 485                 py_tevent_cond_signal(self->oplock_cond);
 486         }
 487
 488         self->oplock_waiter = cli_smb_oplock_break_waiter_send(
 489                 self->ev, self->ev, self->cli);
 490         if (self->oplock_waiter == NULL) {
 491                 return;
 492         }
 493         tevent_req_set_callback(self->oplock_waiter, py_cli_got_oplock_break,
 494                                 self);
 495 }
 496
 497 static PyObject *py_cli_get_oplock_break(struct py_cli_state *self,
 498                                          PyObject *args)
 499 {
 500         size_t num_oplock_breaks;
 501
 502         if (!PyArg_ParseTuple(args, "")) {
 503                 return NULL;
 504         }
 505
 506         if (self->oplock_cond != NULL) {
 507                 errno = EBUSY;
 508                 PyErr_SetFromErrno(PyExc_RuntimeError);
 509                 return NULL;
 510         }
 511
 512         num_oplock_breaks = talloc_array_length(self->oplock_breaks);
 513
 514         if (num_oplock_breaks == 0) {
 515                 struct py_tevent_cond cond;
 516                 int ret;
 517
 518                 self->oplock_cond = &cond;
 519                 ret = py_tevent_cond_wait(&cond);
 520                 self->oplock_cond = NULL;
 521
 522                 if (ret != 0) {
 523                         errno = ret;
 524                         PyErr_SetFromErrno(PyExc_RuntimeError);
 525                         return NULL;
 526                 }
 527         }
 528
 529         num_oplock_breaks = talloc_array_length(self->oplock_breaks);
 530         if (num_oplock_breaks > 0) {
 531                 PyObject *result;
 532
 533                 result = Py_BuildValue(
 534                         "{s:i,s:i}",
 535                         "fnum", self->oplock_breaks[0].fnum,
 536                         "level", self->oplock_breaks[0].level);
 537
 538                 memmove(&self->oplock_breaks[0], &self->oplock_breaks[1],
 539                         sizeof(self->oplock_breaks[0]) *
 540                         (num_oplock_breaks - 1));
 541                 self->oplock_breaks = talloc_realloc(
 542                         NULL, self->oplock_breaks, struct py_cli_oplock_break,
 543                         num_oplock_breaks - 1);
 544
 545                 return result;
 546         }
 547         Py_RETURN_NONE;
 548 }
 549
 550 static void py_cli_state_dealloc(struct py_cli_state *self)
 551 {
 552         TALLOC_FREE(self->thread_state);
 553         TALLOC_FREE(self->oplock_waiter);
 554         TALLOC_FREE(self->ev);
 555
 556         if (self->cli != NULL) {
 557                 cli_shutdown(self->cli);
 558                 self->cli = NULL;
 559         }
 560         self->ob_type->tp_free((PyObject *)self);
 561 }
 562
 563 static PyObject *py_cli_create(struct py_cli_state *self, PyObject *args,
 564                                PyObject *kwds)
 565 {
 566         char *fname;
 567         unsigned CreateFlags = 0;
 568         unsigned DesiredAccess = FILE_GENERIC_READ;
 569         unsigned FileAttributes = 0;
 570         unsigned ShareAccess = 0;
 571         unsigned CreateDisposition = FILE_OPEN;
 572         unsigned CreateOptions = 0;
 573         unsigned SecurityFlags = 0;
 574         uint16_t fnum;
 575         struct tevent_req *req;
 576         NTSTATUS status;
 577
 578         static const char *kwlist[] = {
 579                 "Name", "CreateFlags", "DesiredAccess", "FileAttributes",
 580                 "ShareAccess", "CreateDisposition", "CreateOptions",
 581                 "SecurityFlags", NULL };
 582
 583         if (!ParseTupleAndKeywords(
 584                     args, kwds, "s|IIIIIII", kwlist,
 585                     &fname, &CreateFlags, &DesiredAccess, &FileAttributes,
 586                     &ShareAccess, &CreateDisposition, &CreateOptions,
 587                     &SecurityFlags)) {
 588                 return NULL;
 589         }
 590
 591         req = cli_ntcreate_send(NULL, self->ev, self->cli, fname, CreateFlags,
 592                                 DesiredAccess, FileAttributes, ShareAccess,
 593                                 CreateDisposition, CreateOptions,
 594                                 SecurityFlags);
 595         if (!py_tevent_req_wait_exc(self->ev, req)) {
 596                 return NULL;
 597         }
 598         status = cli_ntcreate_recv(req, &fnum);
 599         TALLOC_FREE(req);
 600
 601         if (!NT_STATUS_IS_OK(status)) {
 602                 PyErr_SetNTSTATUS(status);
 603                 return NULL;
 604         }
 605         return Py_BuildValue("I", (unsigned)fnum);
 606 }
 607
 608 static PyObject *py_cli_close(struct py_cli_state *self, PyObject *args)
 609 {
 610         struct tevent_req *req;
 611         int fnum;
 612         NTSTATUS status;
 613
 614         if (!PyArg_ParseTuple(args, "i", &fnum)) {
 615                 return NULL;
 616         }
 617
 618         req = cli_close_send(NULL, self->ev, self->cli, fnum);
 619         if (!py_tevent_req_wait_exc(self->ev, req)) {
 620                 return NULL;
 621         }
 622         status = cli_close_recv(req);
 623         TALLOC_FREE(req);
 624
 625         if (!NT_STATUS_IS_OK(status)) {
 626                 PyErr_SetNTSTATUS(status);
 627                 return NULL;
 628         }
 629         Py_RETURN_NONE;
 630 }
 631
 632 static PyObject *py_cli_write(struct py_cli_state *self, PyObject *args,
 633                               PyObject *kwds)
 634 {
 635         int fnum;
 636         unsigned mode = 0;
 637         char *buf;
 638         int buflen;
 639         unsigned long long offset;
 640         struct tevent_req *req;
 641         NTSTATUS status;
 642         size_t written;
 643
 644         static const char *kwlist[] = {
 645                 "fnum", "buffer", "offset", "mode", NULL };
 646
 647         if (!ParseTupleAndKeywords(
 648                     args, kwds, "Is#K|I", kwlist,
 649                     &fnum, &buf, &buflen, &offset, &mode)) {
 650                 return NULL;
 651         }
 652
 653         req = cli_write_andx_send(NULL, self->ev, self->cli, fnum, mode,
 654                                   (uint8_t *)buf, offset, buflen);
 655         if (!py_tevent_req_wait_exc(self->ev, req)) {
 656                 return NULL;
 657         }
 658         status = cli_write_andx_recv(req, &written);
 659         TALLOC_FREE(req);
 660
 661         if (!NT_STATUS_IS_OK(status)) {
 662                 PyErr_SetNTSTATUS(status);
 663                 return NULL;
 664         }
 665         return Py_BuildValue("K", (unsigned long long)written);
 666 }
 667
 668 static PyObject *py_cli_read(struct py_cli_state *self, PyObject *args,
 669                              PyObject *kwds)
 670 {
 671         int fnum;
 672         unsigned long long offset;
 673         unsigned size;
 674         struct tevent_req *req;
 675         NTSTATUS status;
 676         uint8_t *buf;
 677         ssize_t buflen;
 678         PyObject *result;
 679
 680         static const char *kwlist[] = {
 681                 "fnum", "offset", "size", NULL };
 682
 683         if (!ParseTupleAndKeywords(
 684                     args, kwds, "IKI", kwlist, &fnum, &offset,
 685                     &size)) {
 686                 return NULL;
 687         }
 688
 689         req = cli_read_andx_send(NULL, self->ev, self->cli, fnum,
 690                                  offset, size);
 691         if (!py_tevent_req_wait_exc(self->ev, req)) {
 692                 return NULL;
 693         }
 694         status = cli_read_andx_recv(req, &buflen, &buf);
 695
 696         if (!NT_STATUS_IS_OK(status)) {
 697                 TALLOC_FREE(req);
 698                 PyErr_SetNTSTATUS(status);
 699                 return NULL;
 700         }
 701         result = Py_BuildValue("s#", (char *)buf, (int)buflen);
 702         TALLOC_FREE(req);
 703         return result;
 704 }
 705
 706 static PyObject *py_cli_ftruncate(struct py_cli_state *self, PyObject *args,
 707                                   PyObject *kwds)
 708 {
 709         int fnum;
 710         unsigned long long size;
 711         struct tevent_req *req;
 712         NTSTATUS status;
 713
 714         static const char *kwlist[] = {
 715                 "fnum", "size", NULL };
 716
 717         if (!ParseTupleAndKeywords(
 718                     args, kwds, "IK", kwlist, &fnum, &size)) {
 719                 return NULL;
 720         }
 721
 722         req = cli_ftruncate_send(NULL, self->ev, self->cli, fnum, size);
 723         if (!py_tevent_req_wait_exc(self->ev, req)) {
 724                 return NULL;
 725         }
 726         status = cli_ftruncate_recv(req);
 727         TALLOC_FREE(req);
 728
 729         if (!NT_STATUS_IS_OK(status)) {
 730                 PyErr_SetNTSTATUS(status);
 731                 return NULL;
 732         }
 733         Py_RETURN_NONE;
 734 }
 735
 736 static PyObject *py_cli_delete_on_close(struct py_cli_state *self,
 737                                         PyObject *args,
 738                                         PyObject *kwds)
 739 {
 740         unsigned fnum, flag;
 741         struct tevent_req *req;
 742         NTSTATUS status;
 743
 744         static const char *kwlist[] = {
 745                 "fnum", "flag", NULL };
 746
 747         if (!ParseTupleAndKeywords(
 748                     args, kwds, "II", kwlist, &fnum, &flag)) {
 749                 return NULL;
 750         }
 751
 752         req = cli_nt_delete_on_close_send(NULL, self->ev, self->cli, fnum,
 753                                           flag);
 754         if (!py_tevent_req_wait_exc(self->ev, req)) {
 755                 return NULL;
 756         }
 757         status = cli_nt_delete_on_close_recv(req);
 758         TALLOC_FREE(req);
 759
 760         if (!NT_STATUS_IS_OK(status)) {
 761                 PyErr_SetNTSTATUS(status);
 762                 return NULL;
 763         }
 764         Py_RETURN_NONE;
 765 }
 766
 767 static PyObject *py_cli_list(struct py_cli_state *self,
 768                              PyObject *args,
 769                              PyObject *kwds)
 770 {
 771         char *mask;
 772         unsigned attribute =
 773                 FILE_ATTRIBUTE_DIRECTORY |
 774                 FILE_ATTRIBUTE_SYSTEM |
 775                 FILE_ATTRIBUTE_HIDDEN;
 776         unsigned info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
 777         struct tevent_req *req;
 778         NTSTATUS status;
 779         struct file_info *finfos;
 780         size_t i, num_finfos;
 781         PyObject *result;
 782
 783         const char *kwlist[] = {
 784                 "mask", "attribute", "info_level", NULL
 785         };
 786
 787         if (!ParseTupleAndKeywords(
 788                     args, kwds, "s|II", kwlist,
 789                     &mask, &attribute, &info_level)) {
 790                 return NULL;
 791         }
 792
 793         req = cli_list_send(NULL, self->ev, self->cli, mask, attribute,
 794                             info_level);
 795         if (!py_tevent_req_wait_exc(self->ev, req)) {
 796                 return NULL;
 797         }
 798         status = cli_list_recv(req, NULL, &finfos, &num_finfos);
 799         TALLOC_FREE(req);
 800
 801         if (!NT_STATUS_IS_OK(status)) {
 802                 PyErr_SetNTSTATUS(status);
 803                 return NULL;
 804         }
 805
 806         result = Py_BuildValue("[]");
 807         if (result == NULL) {
 808                 return NULL;
 809         }
 810
 811         for (i=0; i<num_finfos; i++) {
 812                 struct file_info *finfo = &finfos[i];
 813                 PyObject *file;
 814                 int ret;
 815
 816                 file = Py_BuildValue(
 817                         "{s:s,s:i}",
 818                         "name", finfo->name,
 819                         "mode", (int)finfo->mode);
 820                 if (file == NULL) {
 821                         Py_XDECREF(result);
 822                         return NULL;
 823                 }
 824
 825                 ret = PyList_Append(result, file);
 826                 if (ret == -1) {
 827                         Py_XDECREF(result);
 828                         return NULL;
 829                 }
 830         }
 831
 832         return result;
 833 }
 834
 835 static PyMethodDef py_cli_state_methods[] = {
 836         { "create", (PyCFunction)py_cli_create, METH_VARARGS|METH_KEYWORDS,
 837           "Open a file" },
 838         { "close", (PyCFunction)py_cli_close, METH_VARARGS,
 839           "Close a file handle" },
 840         { "write", (PyCFunction)py_cli_write, METH_VARARGS|METH_KEYWORDS,
 841           "Write to a file handle" },
 842         { "read", (PyCFunction)py_cli_read, METH_VARARGS|METH_KEYWORDS,
 843           "Read from a file handle" },
 844         { "truncate", (PyCFunction)py_cli_ftruncate,
 845           METH_VARARGS|METH_KEYWORDS,
 846           "Truncate a file" },
 847         { "delete_on_close", (PyCFunction)py_cli_delete_on_close,
 848           METH_VARARGS|METH_KEYWORDS,
 849           "Set/Reset the delete on close flag" },
 850         { "readdir", (PyCFunction)py_cli_list,
 851           METH_VARARGS|METH_KEYWORDS,
 852           "List a directory" },
 853         { "get_oplock_break", (PyCFunction)py_cli_get_oplock_break,
 854           METH_VARARGS, "Wait for an oplock break" },
 855         { NULL, NULL, 0, NULL }
 856 };
 857
 858 static PyTypeObject py_cli_state_type = {
 859         PyObject_HEAD_INIT(NULL)
 860         .tp_name = "libsmb_samba_internal.Conn",
 861         .tp_basicsize = sizeof(struct py_cli_state),
 862         .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
 863         .tp_doc = "libsmb connection",
 864         .tp_new = py_cli_state_new,
 865         .tp_init = (initproc)py_cli_state_init,
 866         .tp_dealloc = (destructor)py_cli_state_dealloc,
 867         .tp_methods = py_cli_state_methods,
 868 };
 869
 870 static PyMethodDef py_libsmb_methods[] = {
 871         { NULL },
 872 };
 873
 874 void initlibsmb_samba_internal(void);
 875 void initlibsmb_samba_internal(void)
 876 {
 877         PyObject *m;
 878
 879         talloc_stackframe();
 880
 881         m = Py_InitModule3("libsmb_samba_internal", py_libsmb_methods,
 882                            "libsmb wrapper");
 883
 884         if (PyType_Ready(&py_cli_state_type) < 0) {
 885                 return;
 886         }
 887         Py_INCREF(&py_cli_state_type);
 888         PyModule_AddObject(m, "Conn", (PyObject *)&py_cli_state_type);
 889 }