The key table functions deal with storing and retrieving service keys for use by unattended services which participate in authentication exchanges. Keytab routines should all be atomic. Every routine that acquires a non-sharable resource must release it before it returns. For example, an implementation is not allowed to leave a file open for writing or to have a lock on a file. Any keytab implementations must support multiple concurrent sequential scans. The order of values returned from \funcname{krb5_kt_next_entry} is unspecified and may be sorted to the implementor's convenience. Although the ``right thing'' should happen if the program aborts abnormally, a close routine is provided for freeing resources, etc. People should use the close routine when they are finished. \subsubsection{Per-type functions} The following entry points must be implemented for each type of key table; however, application programs are not expected to call \funcname{krb5_kt_resolve_internal}, \funcname{krb5_kt_remove_internal}, or \funcname{krb5_kt_add_internal} directly. In order to reduce the size of binary programs when static linking is used, it is common to provide two \datatype{krb5_kt_ops} structures for each key table type, one for reading only in which the pointers to the add and delete functions are zero, and one for reading and writing. \begin{funcdecl}{krb5_kt_resolve_internal}{krb5_error_code}{\funcin} \funcarg{char *}{residual} \funcout \funcarg{krb5_keytab *}{id} \end{funcdecl} Fills in \funcparam{*id} with a handle identifying the keytab with name ``residual''. The interpretation of ``residual'' is dependent on the type of keytab. \begin{funcdecl}{krb5_kt_get_name}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcout \funcarg{char *}{name} \funcin \funcarg{int}{namesize} \end{funcdecl} \funcarg{name} is filled in with the first \funcparam{namesize} bytes of the name of the keytab identified by \funcname{id}. If the name is shorter than \funcparam{namesize}, then \funcarg{name} will be null-terminated. \begin{funcdecl}{krb5_kt_close}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \end{funcdecl} Closes the keytab identified by \funcparam{id} and invalidates \funcparam{id}, and releases any other resources acquired during use of the key table. Requires that \funcparam{id} identifies a valid credentials cache. \begin{funcdecl}{krb5_kt_get_entry}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_principal}{principal} \funcarg{krb5_kvno}{vno} \funcout \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Searches the keytab identified by \funcparam{id} for an entry whose principal matches \funcparam{principal} and whose key version number matches \funcparam{vno}. If \funcparam{vno} is zero, the first entry whose principal matches is returned. Returns an error code if no suitable entry is found. If an entry is found, the entry is returned in \funcparam{*entry}; its contents should be deallocated by calling \funcname{krb5_kt_free_entry} when no longer needed. \begin{funcdecl}{krb5_kt_free_entry}{krb5_error_code}{\funcinout} \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Releases all storage allocated for \funcparam{entry}, which must point to a structure previously filled in by \funcname{krb5_kt_get_entry} or \funcname{krb5_kt_next_entry}. \begin{funcdecl}{krb5_kt_start_seq_get}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcout \funcarg{krb5_kt_cursor *}{cursor} \end{funcdecl} Prepares to read sequentially every key in the keytab identified by \funcparam{id}. \funcparam{cursor} is filled in with a cursor to be used in calls to \funcname{krb5_kt_next_entry}. \begin{funcdecl}{krb5_kt_next_entry}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcout \funcarg{krb5_keytab_entry *}{entry} \funcinout \funcarg{krb5_kt_cursor}{cursor} \end{funcdecl} Fetches the ``next'' entry in the keytab, returning it in \funcparam{*entry}, and updates \funcparam{*cursor} for the next request. If the keytab changes during the sequential get, an error is guaranteed. \funcparam{*entry} should be freed after use by calling \funcname{krb5_kt_free_entry}. Requires that \funcparam{id} identifies a valid credentials cache. and \funcparam{*cursor} be a cursor returned by \funcname{krb5_kt_start_seq_get} or a subsequent call to \funcname{krb5_kt_next_entry}. Errors: error code if no more cache entries or if the keytab changes. \begin{funcdecl}{krb5_kt_end_seq_get}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_kt_cursor}{cursor} \end{funcdecl} Finishes sequential processing mode and invalidates \funcparam{cursor}, which must never be re-used after this call. Requires that \funcparam{id} identifies a valid credentials cache. and \funcparam{*cursor} be a cursor returned by \funcname{krb5_kt_start_seq_get} or a subsequent call to \funcname{krb5_kt_next_entry}. May return error code if \funcparam{cursor} is invalid. \begin{funcdecl}{krb5_kt_remove_internal}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Searches the keytab \funcparam{id} for an entry that exactly matches \funcparam{entry}. If one is found, it is removed from the keytab. Returns an error code if not found. \begin{funcdecl}{krb5_kt_add_internal}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Stores \funcparam{entry} in the keytab \funcparam{id}. Fails if the entry already exists. This operation must, within the constraints of the operating system, not return until it can verify that the write has completed succesfully. For example, in a UNIX file-based implementation, this routine (or the part of the underlying implementation that it calls) would be responsible for doing an \funcname{fsync} on the file before returning. Returns an error code if \funcparam{entry} is already present in the keytab or if the key could not be stored (quota problem, etc). \subsubsection{Glue functions} The following functions are implemented in the base library and serve to glue together the various types of key tables. \begin{funcdecl}{krb5_kt_register}{krb5_error_code}{\funcin} \funcarg{krb5_kt_ops *}{ops} \end{funcdecl} Adds a new ticket cache type to the set recognized by \funcname{krb5_kt_resolve}. Requires that a keytab type named \funcparam{ops{\ptsto}prefix} is not yet known. An error is returned if \funcparam{ops{\ptsto}prefix} is already known. \begin{funcdecl}{krb5_kt_resolve}{krb5_error_code}{\funcin} \funcarg{char *}{string_name} \funcout \funcarg{krb5_keytab *}{id} \end{funcdecl} Fills in \funcparam{*id} with a handle identifying the keytab with name ``string_name''. The keytab is not opened. Requires that \funcparam{string_name} be of the form ``type:residual'' and ``type'' is a type known to the library. Errors: badly formatted name. \begin{funcdecl}{krb5_kt_default_name}{krb5_error_code}{\funcin} \funcarg{char *}{name} \funcarg{int}{namesize} \end{funcdecl} \funcparam{name} is filled in with the first \funcparam{namesize} bytes of the name of the default keytab. If the name is shorter than \funcparam{namesize}, then the remainder of \funcparam{name} will be zeroed. \begin{funcdecl}{krb5_kt_default}{krb5_error_code}{\funcin} \funcarg{krb5_keytab *}{id} \end{funcdecl} Fills in \funcparam{id} with a handle identifying the default keytab. \begin{funcdecl}{krb5_kt_read_service_key}{krb5_error_code}{\funcin} \funcarg{krb5_pointer}{keyprocarg} \funcarg{krb5_principal}{principal} \funcarg{krb5_kvno}{vno} \funcout \funcarg{krb5_keyblock **}{key} \end{funcdecl} This function is suitable for use as a parameter to \funcname{krb5_rd_req}. If \funcname{keyprocarg} is not NULL, it is taken to be a \datatype{char *} denoting the name of a keytab. Otherwise, the default keytab will be used. The keytab is opened and searched for the entry identified by \funcparam{principal} and \funcparam{vno}, returning the resulting key in \funcparam{*key} or returning an error code if it is not found. \funcname{krb5_free_keyblock} should be called on \funcparam{*key} when the caller is finished with the key. Returns an error code if the entry is not found. \begin{funcdecl}{krb5_kt_add_entry}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Calls the keytab-specific add routine \funcname{krb5_kt_add_internal} with the same function arguments. If this routine is not available, then KRB5_KT_NOWRITE is returned. \begin{funcdecl}{krb5_kt_remove_entry}{krb5_error_code}{\funcin} \funcarg{krb5_keytab}{id} \funcarg{krb5_keytab_entry *}{entry} \end{funcdecl} Calls the keytab-specific remove routine \funcname{krb5_kt_remove_internal} with the same function arguments. If this routine is not available, then KRB5_KT_NOWRITE is returned. #n164'>164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 
/* 
   Unix SMB/CIFS implementation.

   Python wrapper for winbind client functions.

   Copyright (C) Tim Potter      2002-2003
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "py_winbind.h"

/* 
 * Exceptions raised by this module 
 */

PyObject *winbind_error;	/* A winbind call returned WINBINDD_ERROR */

/* Prototypes from common.h */

NSS_STATUS winbindd_request(int req_type, 
			    struct winbindd_request *request,
			    struct winbindd_response *response);

/*
 * Name <-> SID conversion
 */

/* Convert a name to a sid */

static PyObject *py_name_to_sid(PyObject *self, PyObject *args)

{
	struct winbindd_request request;
	struct winbindd_response response;
	PyObject *result;
	char *name, *p;
	const char *sep;

	if (!PyArg_ParseTuple(args, "s", &name))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	sep = lp_winbind_separator();

	if ((p = strchr(name, sep[0]))) {
		*p = 0;
		fstrcpy(request.data.name.dom_name, name);
		fstrcpy(request.data.name.name, p + 1);
	} else {
		fstrcpy(request.data.name.dom_name, lp_workgroup());
		fstrcpy(request.data.name.name, name);
	}

	if (winbindd_request(WINBINDD_LOOKUPNAME, &request, &response)  
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;
	}

	result = PyString_FromString(response.data.sid.sid);

	return result;
}

/* Convert a sid to a name */

static PyObject *py_sid_to_name(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	PyObject *result;
	char *sid, *name;

	if (!PyArg_ParseTuple(args, "s", &sid))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	fstrcpy(request.data.sid, sid);

	if (winbindd_request(WINBINDD_LOOKUPSID, &request, &response)  
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;
	}

	asprintf(&name, "%s%s%s", response.data.name.dom_name,
		 lp_winbind_separator(), response.data.name.name);

	result = PyString_FromString(name);

	free(name);

	return result;
}

/*
 * Enumerate users/groups
 */

/* Enumerate domain users */

static PyObject *py_enum_domain_users(PyObject *self, PyObject *args)
{
	struct winbindd_response response;
	PyObject *result;

	if (!PyArg_ParseTuple(args, ""))
		return NULL;

	ZERO_STRUCT(response);

	if (winbindd_request(WINBINDD_LIST_USERS, NULL, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	result = PyList_New(0);

	if (response.extra_data) {
		const char *extra_data = response.extra_data;
		fstring name;

		while (next_token(&extra_data, name, ",", sizeof(fstring)))
			PyList_Append(result, PyString_FromString(name));
	}

	return result;
}

/* Enumerate domain groups */

static PyObject *py_enum_domain_groups(PyObject *self, PyObject *args)
{
	struct winbindd_response response;
	PyObject *result = NULL;

	if (!PyArg_ParseTuple(args, ""))
		return NULL;

	ZERO_STRUCT(response);

	if (winbindd_request(WINBINDD_LIST_GROUPS, NULL, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	result = PyList_New(0);

	if (response.extra_data) {
		const char *extra_data = response.extra_data;
		fstring name;

		while (next_token(&extra_data, name, ",", sizeof(fstring)))
			PyList_Append(result, PyString_FromString(name));
	}

	return result;
}

/*
 * Miscellaneous domain related
 */

/* Enumerate domain groups */

static PyObject *py_enum_trust_dom(PyObject *self, PyObject *args)
{
	struct winbindd_response response;
	PyObject *result = NULL;

	if (!PyArg_ParseTuple(args, ""))
		return NULL;

	ZERO_STRUCT(response);

	if (winbindd_request(WINBINDD_LIST_TRUSTDOM, NULL, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	result = PyList_New(0);

	if (response.extra_data) {
		const char *extra_data = response.extra_data;
		fstring name;

		while (next_token(&extra_data, name, ",", sizeof(fstring)))
			PyList_Append(result, PyString_FromString(name));
	}

	return result;
}

/* Check machine account password */

static PyObject *py_check_secret(PyObject *self, PyObject *args)
{
	struct winbindd_response response;

	if (!PyArg_ParseTuple(args, ""))
		return NULL;

	ZERO_STRUCT(response);

	if (winbindd_request(WINBINDD_CHECK_MACHACC, NULL, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	return PyInt_FromLong(response.data.num_entries);
}

/*
 * Return a dictionary consisting of all the winbind related smb.conf
 * parameters.  This is stored in the module object.
 */

static PyObject *py_config_dict(void)
{
	PyObject *result;
	uid_t ulow, uhi;
	gid_t glow, ghi;
	
	if (!(result = PyDict_New()))
		return NULL;

	/* Various string parameters */

	PyDict_SetItemString(result, "workgroup", 
			     PyString_FromString(lp_workgroup()));

	PyDict_SetItemString(result, "separator", 
			     PyString_FromString(lp_winbind_separator()));

	PyDict_SetItemString(result, "template_homedir", 
			     PyString_FromString(lp_template_homedir()));

	PyDict_SetItemString(result, "template_shell", 
			     PyString_FromString(lp_template_shell()));

	/* idmap uid/gid range */

	if (lp_idmap_uid(&ulow, &uhi)) {
		PyDict_SetItemString(result, "uid_low", PyInt_FromLong(ulow));
		PyDict_SetItemString(result, "uid_high", PyInt_FromLong(uhi));
	}

	if (lp_idmap_gid(&glow, &ghi)) {
		PyDict_SetItemString(result, "gid_low", PyInt_FromLong(glow));
		PyDict_SetItemString(result, "gid_high", PyInt_FromLong(ghi));
	}

	return result;
}

/*
 * ID mapping
 */

/* Convert a uid to a SID */

static PyObject *py_uid_to_sid(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	int id;

	if (!PyArg_ParseTuple(args, "i", &id))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	request.data.uid = id;

	if (winbindd_request(WINBINDD_UID_TO_SID, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	return PyString_FromString(response.data.sid.sid);
}

/* Convert a gid to a SID */

static PyObject *py_gid_to_sid(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	int id;

	if (!PyArg_ParseTuple(args, "i", &id))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	request.data.gid = id;

	if (winbindd_request(WINBINDD_GID_TO_SID, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	return PyString_FromString(response.data.sid.sid);
}

/* Convert a sid to a uid */

static PyObject *py_sid_to_uid(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	char *sid;

	if (!PyArg_ParseTuple(args, "s", &sid))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	fstrcpy(request.data.sid, sid);

	if (winbindd_request(WINBINDD_SID_TO_UID, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}

	return PyInt_FromLong(response.data.uid);
}

/* Convert a sid to a gid */

static PyObject *py_sid_to_gid(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	char *sid;

	if (!PyArg_ParseTuple(args, "s", &sid))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	fstrcpy(request.data.sid, sid);

	if (winbindd_request(WINBINDD_SID_TO_GID, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	return PyInt_FromLong(response.data.gid);
}

/*
 * PAM authentication functions
 */

/* Plaintext authentication */

static PyObject *py_auth_plaintext(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	char *username, *password;

	if (!PyArg_ParseTuple(args, "ss", &username, &password))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	fstrcpy(request.data.auth.user, username);
	fstrcpy(request.data.auth.pass, password);

	if (winbindd_request(WINBINDD_PAM_AUTH, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	return PyInt_FromLong(response.data.auth.nt_status);
}

/* Challenge/response authentication */

static PyObject *py_auth_crap(PyObject *self, PyObject *args, PyObject *kw)
{
	static char *kwlist[] = 
		{"username", "password", "use_lm_hash", "use_nt_hash", NULL };
	struct winbindd_request request;
	struct winbindd_response response;
	char *username, *password;
	int use_lm_hash = 1, use_nt_hash = 1;

	if (!PyArg_ParseTupleAndKeywords(
		    args, kw, "ss|ii", kwlist, &username, &password, 
		    &use_lm_hash, &use_nt_hash))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	if (push_utf8_fstring(request.data.auth_crap.user, username) == -1) {
		PyErr_SetString(winbind_error, "unable to create utf8 string");
		return NULL;
	}

	generate_random_buffer(request.data.auth_crap.chal, 8, False);
        
	if (use_lm_hash) {
		SMBencrypt((uchar *)password, request.data.auth_crap.chal, 
			   (uchar *)request.data.auth_crap.lm_resp);
		request.data.auth_crap.lm_resp_len = 24;
	}

	if (use_nt_hash) {
		SMBNTencrypt((uchar *)password, request.data.auth_crap.chal,
			     (uchar *)request.data.auth_crap.nt_resp);
		request.data.auth_crap.nt_resp_len = 24;
	}

	if (winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	return PyInt_FromLong(response.data.auth.nt_status);
}

#if 0				/* Include when auth_smbd merged to HEAD */

/* Challenge/response authentication, with secret */

static PyObject *py_auth_smbd(PyObject *self, PyObject *args, PyObject *kw)
{
	static char *kwlist[] = 
		{"username", "password", "use_lm_hash", "use_nt_hash", NULL };
	struct winbindd_request request;
	struct winbindd_response response;
	char *username, *password;
	int use_lm_hash = 1, use_nt_hash = 1;

	if (!PyArg_ParseTupleAndKeywords(
		    args, kw, "ss|ii", kwlist, &username, &password, 
		    &use_lm_hash, &use_nt_hash))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	if (push_utf8_fstring(request.data.auth_crap.user, username) == -1) {
		PyErr_SetString("unable to create utf8 string");
		return NULL;
	}

	generate_random_buffer(request.data.smbd_auth_crap.chal, 8, False);
        
	if (use_lm_hash) {
		SMBencrypt((uchar *)password, 
			   request.data.smbd_auth_crap.chal, 
			   (uchar *)request.data.smbd_auth_crap.lm_resp);
		request.data.smbd_auth_crap.lm_resp_len = 24;
	}

	if (use_nt_hash) {
		SMBNTencrypt((uchar *)password, 
			     request.data.smbd_auth_crap.chal,
			     (uchar *)request.data.smbd_auth_crap.nt_resp);
		request.data.smbd_auth_crap.nt_resp_len = 24;
	}

	if (!secrets_fetch_trust_account_password(
		    lp_workgroup(), request.data.smbd_auth_crap.proof, NULL)) {
		PyErr_SetString(
			winbind_error, "unable to fetch domain secret");
		return NULL;
	}



	if (winbindd_request(WINBINDD_SMBD_AUTH_CRAP, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	return PyInt_FromLong(response.data.auth.nt_status);
}

#endif /* 0 */

/* Get user info from name */

static PyObject *py_getpwnam(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	char *username;
	PyObject *result;

	if (!PyArg_ParseTuple(args, "s", &username))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	fstrcpy(request.data.username, username);

	if (winbindd_request(WINBINDD_GETPWNAM, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	if (!py_from_winbind_passwd(&result, &response)) {
		result = Py_None;
		Py_INCREF(result);
	}

	return result;
}

/* Get user info from uid */

static PyObject *py_getpwuid(PyObject *self, PyObject *args)
{
	struct winbindd_request request;
	struct winbindd_response response;
	uid_t uid;
	PyObject *result;

	if (!PyArg_ParseTuple(args, "i", &uid))
		return NULL;

	ZERO_STRUCT(request);
	ZERO_STRUCT(response);

	request.data.uid = uid;

	if (winbindd_request(WINBINDD_GETPWUID, &request, &response) 
	    != NSS_STATUS_SUCCESS) {
		PyErr_SetString(winbind_error, "lookup failed");
		return NULL;		
	}
	
	if (!py_from_winbind_passwd(&result, &response)) {
		result = Py_None;
		Py_INCREF(result);
	}

	return result;
}

/*
 * Method dispatch table
 */

static PyMethodDef winbind_methods[] = {

	{ "getpwnam", (PyCFunction)py_getpwnam, METH_VARARGS, "getpwnam(3)" },
	{ "getpwuid", (PyCFunction)py_getpwuid, METH_VARARGS, "getpwuid(3)" },

	/* Name <-> SID conversion */

	{ "name_to_sid", (PyCFunction)py_name_to_sid, METH_VARARGS,
	  "name_to_sid(s) -> string\n"
"\n"
"Return the SID for a name.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.name_to_sid('FOO/Administrator')\n"
"'S-1-5-21-406022937-1377575209-526660263-500' " },

	{ "sid_to_name", (PyCFunction)py_sid_to_name, METH_VARARGS,
	  "sid_to_name(s) -> string\n"
"\n"
"Return the name for a SID.\n"
"\n"
"Example:\n"
"\n"
">>> import winbind\n"
">>> winbind.sid_to_name('S-1-5-21-406022937-1377575209-526660263-500')\n"
"'FOO/Administrator' " },

	/* Enumerate users/groups */

	{ "enum_domain_users", (PyCFunction)py_enum_domain_users, METH_VARARGS,
	  "enum_domain_users() -> list of strings\n"
"\n"
"Return a list of domain users.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.enum_domain_users()\n"
"['FOO/Administrator', 'FOO/anna', 'FOO/Anne Elk', 'FOO/build', \n"
"'FOO/foo', 'FOO/foo2', 'FOO/foo3', 'FOO/Guest', 'FOO/user1', \n"
"'FOO/whoops-ptang'] " },

	{ "enum_domain_groups", (PyCFunction)py_enum_domain_groups, 
	  METH_VARARGS,
	  "enum_domain_groups() -> list of strings\n"
"\n"
"Return a list of domain groups.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.enum_domain_groups()\n"
"['FOO/cows', 'FOO/Domain Admins', 'FOO/Domain Guests', \n"
"'FOO/Domain Users'] " },

	/* ID mapping */

	{ "uid_to_sid", (PyCFunction)py_uid_to_sid, METH_VARARGS,
	  "uid_to_sid(int) -> string\n"
"\n"
"Return the SID for a UNIX uid.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.uid_to_sid(10000)   \n"
"'S-1-5-21-406022937-1377575209-526660263-500' " },

	{ "gid_to_sid", (PyCFunction)py_gid_to_sid, METH_VARARGS,
	  "gid_to_sid(int) -> string\n"
"\n"
"Return the UNIX gid for a SID.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.gid_to_sid(10001)\n"
"'S-1-5-21-406022937-1377575209-526660263-512' " },

	{ "sid_to_uid", (PyCFunction)py_sid_to_uid, METH_VARARGS,
	  "sid_to_uid(string) -> int\n"
"\n"
"Return the UNIX uid for a SID.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.sid_to_uid('S-1-5-21-406022937-1377575209-526660263-500')\n"
"10000 " },

	{ "sid_to_gid", (PyCFunction)py_sid_to_gid, METH_VARARGS,
	  "sid_to_gid(string) -> int\n"
"\n"
"Return the UNIX gid corresponding to a SID.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.sid_to_gid('S-1-5-21-406022937-1377575209-526660263-512')\n"
"10001 " },

	/* Miscellaneous */

	{ "check_secret", (PyCFunction)py_check_secret, METH_VARARGS,
	  "check_secret() -> int\n"
"\n"
"Check the machine trust account password.  The NT status is returned\n"
"with zero indicating success. " },

	{ "enum_trust_dom", (PyCFunction)py_enum_trust_dom, METH_VARARGS,
	  "enum_trust_dom() -> list of strings\n"
"\n"
"Return a list of trusted domains.  The domain the server is a member \n"
"of is not included.\n"
"\n"
"Example:\n"
"\n"
">>> winbind.enum_trust_dom()\n"
"['NPSD-TEST2', 'SP2NDOM'] " },

	/* PAM authorisation functions */

	{ "auth_plaintext", (PyCFunction)py_auth_plaintext, METH_VARARGS,
	  "auth_plaintext(s, s) -> int\n"
"\n"
"Authenticate a username and password using plaintext authentication.\n"
"The NT status code is returned with zero indicating success." },

	{ "auth_crap", (PyCFunction)py_auth_crap, METH_VARARGS,
	  "auth_crap(s, s) -> int\n"
"\n"
"Authenticate a username and password using the challenge/response\n"
"protocol.  The NT status code is returned with zero indicating\n"
"success." },

#if 0				/* Include when smbd_auth merged to HEAD */

	{ "auth_smbd", (PyCFunction)py_auth_crap, METH_VARARGS,
	  "auth_smbd(s, s) -> int\n"
"\n"
"Authenticate a username and password using the challenge/response\n"
"protocol but using the domain secret to prove we are root.  The NT \n"
"status code is returned with zero indicating success." },

#endif

	{ NULL }
};

static struct const_vals {
	char *name;
	uint32 value;
	char *docstring;
} module_const_vals[] = {

	/* Well known RIDs */
	
	{ "DOMAIN_USER_RID_ADMIN", DOMAIN_USER_RID_ADMIN, 
	  "Well-known RID for Administrator user" },

	{ "DOMAIN_USER_RID_GUEST", DOMAIN_USER_RID_GUEST,
	  "Well-known RID for Guest user" },

	{ "DOMAIN_GROUP_RID_ADMINS", DOMAIN_GROUP_RID_ADMINS,
	  "Well-known RID for Domain Admins group" },

	{ "DOMAIN_GROUP_RID_USERS", DOMAIN_GROUP_RID_USERS,
	  "Well-known RID for Domain Users group" },

	{ "DOMAIN_GROUP_RID_GUESTS", DOMAIN_GROUP_RID_GUESTS,
	  "Well-known RID for Domain Guests group" }, 
	
	{ NULL }
};

static void const_init(PyObject *dict)
{
	struct const_vals *tmp;
	PyObject *obj;

	for (tmp = module_const_vals; tmp->name; tmp++) {
		obj = PyInt_FromLong(tmp->value);
		PyDict_SetItemString(dict, tmp->name, obj);
		Py_DECREF(obj);
	}
}

/*
 * Module initialisation 
 */

static char winbind_module__doc__[] =
"A python extension to winbind client functions.";

void initwinbind(void)
{
	PyObject *module, *dict;

	/* Initialise module */

        module = Py_InitModule3("winbind", winbind_methods,
				winbind_module__doc__);

	dict = PyModule_GetDict(module);

	winbind_error = PyErr_NewException("winbind.error", NULL, NULL);
	PyDict_SetItemString(dict, "error", winbind_error);

	/* Do samba initialisation */

	py_samba_init();

	/* Initialise constants */

	const_init(dict);

	/* Insert configuration dictionary */

	PyDict_SetItemString(dict, "config", py_config_dict());
}
generated by cgit (git 2.34.1) at 2026-03-25 22:38:25 +0000