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Revert "ldb: Remove Samba-specific symbols."
[Samba/ekacnet.git] / source3 / lib / tldap.c
blob25f39ed8a2808ff1975c1f259bddcb627627e7a2
1 /*
2 Unix SMB/CIFS implementation.
3 Infrastructure for async ldap client requests
4 Copyright (C) Volker Lendecke 2009
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "includes.h"
21 #include "tldap.h"
22
23 bool tevent_req_is_ldap_error(struct tevent_req *req, int *perr)
24 {
25 enum tevent_req_state state;
26 uint64_t err;
27
28 if (!tevent_req_is_error(req, &state, &err)) {
29 return false;
30 }
31 switch (state) {
32 case TEVENT_REQ_TIMED_OUT:
33 *perr = TLDAP_TIMEOUT;
34 break;
35 case TEVENT_REQ_NO_MEMORY:
36 *perr = TLDAP_NO_MEMORY;
37 break;
38 case TEVENT_REQ_USER_ERROR:
39 *perr = err;
40 break;
41 default:
42 *perr = TLDAP_OPERATIONS_ERROR;
43 break;
44 }
45 return true;
46 }
47
48 struct tldap_ctx_attribute {
49 char *name;
50 void *ptr;
51 };
52
53 struct tldap_context {
54 int ld_version;
55 int ld_deref;
56 int ld_sizelimit;
57 int ld_timelimit;
58 struct tstream_context *conn;
59 bool server_down;
60 int msgid;
61 struct tevent_queue *outgoing;
62 struct tevent_req **pending;
63
64 /* For the sync wrappers we need something like get_last_error... */
65 struct tldap_message *last_msg;
66
67 /* debug */
68 void (*log_fn)(void *context, enum tldap_debug_level level,
69 const char *fmt, va_list ap);
70 void *log_private;
71
72 struct tldap_ctx_attribute *ctx_attrs;
73 };
74
75 struct tldap_message {
76 struct asn1_data *data;
77 uint8_t *inbuf;
78 int type;
79 int id;
80
81 /* RESULT_ENTRY */
82 char *dn;
83 struct tldap_attribute *attribs;
84
85 /* Error data sent by the server */
86 int lderr;
87 char *res_matcheddn;
88 char *res_diagnosticmessage;
89 char *res_referral;
90 struct tldap_control *res_sctrls;
91
92 /* Controls sent by the server */
93 struct tldap_control *ctrls;
94 };
95
96 void tldap_set_debug(struct tldap_context *ld,
97 void (*log_fn)(void *log_private,
98 enum tldap_debug_level level,
99 const char *fmt,
100 va_list ap) PRINTF_ATTRIBUTE(3,0),
101 void *log_private)
102 {
103 ld->log_fn = log_fn;
104 ld->log_private = log_private;
105 }
106
107 static void tldap_debug(struct tldap_context *ld,
108 enum tldap_debug_level level,
109 const char *fmt, ...)
110 {
111 va_list ap;
112 if (!ld) {
113 return;
114 }
115 if (ld->log_fn == NULL) {
116 return;
117 }
118 va_start(ap, fmt);
119 ld->log_fn(ld->log_private, level, fmt, ap);
120 va_end(ap);
121 }
122
123 static int tldap_next_msgid(struct tldap_context *ld)
124 {
125 int result;
126
127 result = ld->msgid++;
128 if (ld->msgid == 2147483647) {
129 ld->msgid = 1;
130 }
131 return result;
132 }
133
134 struct tldap_context *tldap_context_create(TALLOC_CTX *mem_ctx, int fd)
135 {
136 struct tldap_context *ctx;
137 int ret;
138
139 ctx = talloc_zero(mem_ctx, struct tldap_context);
140 if (ctx == NULL) {
141 return NULL;
142 }
143 ret = tstream_bsd_existing_socket(ctx, fd, &ctx->conn);
144 if (ret == -1) {
145 TALLOC_FREE(ctx);
146 return NULL;
147 }
148 ctx->msgid = 1;
149 ctx->ld_version = 3;
150 ctx->outgoing = tevent_queue_create(ctx, "tldap_outgoing");
151 if (ctx->outgoing == NULL) {
152 TALLOC_FREE(ctx);
153 return NULL;
154 }
155 return ctx;
156 }
157
158 bool tldap_connection_ok(struct tldap_context *ld)
159 {
160 if (ld == NULL) {
161 return false;
162 }
163 return !ld->server_down;
164 }
165
166 static struct tldap_ctx_attribute *tldap_context_findattr(
167 struct tldap_context *ld, const char *name)
168 {
169 int i, num_attrs;
170
171 num_attrs = talloc_array_length(ld->ctx_attrs);
172
173 for (i=0; i<num_attrs; i++) {
174 if (strcmp(ld->ctx_attrs[i].name, name) == 0) {
175 return &ld->ctx_attrs[i];
176 }
177 }
178 return NULL;
179 }
180
181 bool tldap_context_setattr(struct tldap_context *ld,
182 const char *name, const void *_pptr)
183 {
184 struct tldap_ctx_attribute *tmp, *attr;
185 char *tmpname;
186 int num_attrs;
187 void **pptr = (void **)_pptr;
188
189 attr = tldap_context_findattr(ld, name);
190 if (attr != NULL) {
191 /*
192 * We don't actually delete attrs, we don't expect tons of
193 * attributes being shuffled around.
194 */
195 TALLOC_FREE(attr->ptr);
196 if (*pptr != NULL) {
197 attr->ptr = talloc_move(ld->ctx_attrs, pptr);
198 *pptr = NULL;
199 }
200 return true;
201 }
202
203 tmpname = talloc_strdup(ld, name);
204 if (tmpname == NULL) {
205 return false;
206 }
207
208 num_attrs = talloc_array_length(ld->ctx_attrs);
209
210 tmp = talloc_realloc(ld, ld->ctx_attrs, struct tldap_ctx_attribute,
211 num_attrs+1);
212 if (tmp == NULL) {
213 TALLOC_FREE(tmpname);
214 return false;
215 }
216 tmp[num_attrs].name = talloc_move(tmp, &tmpname);
217 if (*pptr != NULL) {
218 tmp[num_attrs].ptr = talloc_move(tmp, pptr);
219 } else {
220 tmp[num_attrs].ptr = NULL;
221 }
222 *pptr = NULL;
223 ld->ctx_attrs = tmp;
224 return true;
225 }
226
227 void *tldap_context_getattr(struct tldap_context *ld, const char *name)
228 {
229 struct tldap_ctx_attribute *attr = tldap_context_findattr(ld, name);
230
231 if (attr == NULL) {
232 return NULL;
233 }
234 return attr->ptr;
235 }
236
237 struct read_ldap_state {
238 uint8_t *buf;
239 bool done;
240 };
241
242 static ssize_t read_ldap_more(uint8_t *buf, size_t buflen, void *private_data);
243 static void read_ldap_done(struct tevent_req *subreq);
244
245 static struct tevent_req *read_ldap_send(TALLOC_CTX *mem_ctx,
246 struct tevent_context *ev,
247 struct tstream_context *conn)
248 {
249 struct tevent_req *req, *subreq;
250 struct read_ldap_state *state;
251
252 req = tevent_req_create(mem_ctx, &state, struct read_ldap_state);
253 if (req == NULL) {
254 return NULL;
255 }
256 state->done = false;
257
258 subreq = tstream_read_packet_send(state, ev, conn, 2, read_ldap_more,
259 state);
260 if (tevent_req_nomem(subreq, req)) {
261 return tevent_req_post(req, ev);
262 }
263 tevent_req_set_callback(subreq, read_ldap_done, req);
264 return req;
265 }
266
267 static ssize_t read_ldap_more(uint8_t *buf, size_t buflen, void *private_data)
268 {
269 struct read_ldap_state *state = talloc_get_type_abort(
270 private_data, struct read_ldap_state);
271 size_t len;
272 int i, lensize;
273
274 if (state->done) {
275 /* We've been here, we're done */
276 return 0;
277 }
278
279 /*
280 * From ldap.h: LDAP_TAG_MESSAGE is 0x30
281 */
282 if (buf[0] != 0x30) {
283 return -1;
284 }
285
286 len = buf[1];
287 if ((len & 0x80) == 0) {
288 state->done = true;
289 return len;
290 }
291
292 lensize = (len & 0x7f);
293 len = 0;
294
295 if (buflen == 2) {
296 /* Please get us the full length */
297 return lensize;
298 }
299 if (buflen > 2 + lensize) {
300 state->done = true;
301 return 0;
302 }
303 if (buflen != 2 + lensize) {
304 return -1;
305 }
306
307 for (i=0; i<lensize; i++) {
308 len = (len << 8) | buf[2+i];
309 }
310 return len;
311 }
312
313 static void read_ldap_done(struct tevent_req *subreq)
314 {
315 struct tevent_req *req = tevent_req_callback_data(
316 subreq, struct tevent_req);
317 struct read_ldap_state *state = tevent_req_data(
318 req, struct read_ldap_state);
319 ssize_t nread;
320 int err;
321
322 nread = tstream_read_packet_recv(subreq, state, &state->buf, &err);
323 TALLOC_FREE(subreq);
324 if (nread == -1) {
325 tevent_req_error(req, err);
326 return;
327 }
328 tevent_req_done(req);
329 }
330
331 static ssize_t read_ldap_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
332 uint8_t **pbuf, int *perrno)
333 {
334 struct read_ldap_state *state = tevent_req_data(
335 req, struct read_ldap_state);
336
337 if (tevent_req_is_unix_error(req, perrno)) {
338 return -1;
339 }
340 *pbuf = talloc_move(mem_ctx, &state->buf);
341 return talloc_get_size(*pbuf);
342 }
343
344 struct tldap_msg_state {
345 struct tldap_context *ld;
346 struct tevent_context *ev;
347 int id;
348 struct iovec iov;
349
350 struct asn1_data *data;
351 uint8_t *inbuf;
352 };
353
354 static void tldap_push_controls(struct asn1_data *data,
355 struct tldap_control *sctrls,
356 int num_sctrls)
357 {
358 int i;
359
360 if ((sctrls == NULL) || (num_sctrls == 0)) {
361 return;
362 }
363
364 asn1_push_tag(data, ASN1_CONTEXT(0));
365
366 for (i=0; i<num_sctrls; i++) {
367 struct tldap_control *c = &sctrls[i];
368 asn1_push_tag(data, ASN1_SEQUENCE(0));
369 asn1_write_OctetString(data, c->oid, strlen(c->oid));
370 if (c->critical) {
371 asn1_write_BOOLEAN(data, true);
372 }
373 if (c->value.data != NULL) {
374 asn1_write_OctetString(data, c->value.data,
375 c->value.length);
376 }
377 asn1_pop_tag(data); /* ASN1_SEQUENCE(0) */
378 }
379
380 asn1_pop_tag(data); /* ASN1_CONTEXT(0) */
381 }
382
383 static void tldap_msg_sent(struct tevent_req *subreq);
384 static void tldap_msg_received(struct tevent_req *subreq);
385
386 static struct tevent_req *tldap_msg_send(TALLOC_CTX *mem_ctx,
387 struct tevent_context *ev,
388 struct tldap_context *ld,
389 int id, struct asn1_data *data,
390 struct tldap_control *sctrls,
391 int num_sctrls)
392 {
393 struct tevent_req *req, *subreq;
394 struct tldap_msg_state *state;
395 DATA_BLOB blob;
396
397 tldap_debug(ld, TLDAP_DEBUG_TRACE, "tldap_msg_send: sending msg %d\n",
398 id);
399
400 req = tevent_req_create(mem_ctx, &state, struct tldap_msg_state);
401 if (req == NULL) {
402 return NULL;
403 }
404 state->ld = ld;
405 state->ev = ev;
406 state->id = id;
407
408 if (state->ld->server_down) {
409 tevent_req_error(req, TLDAP_SERVER_DOWN);
410 return tevent_req_post(req, ev);
411 }
412
413 tldap_push_controls(data, sctrls, num_sctrls);
414
415 asn1_pop_tag(data);
416
417 if (!asn1_blob(data, &blob)) {
418 tevent_req_error(req, TLDAP_ENCODING_ERROR);
419 return tevent_req_post(req, ev);
420 }
421
422 state->iov.iov_base = blob.data;
423 state->iov.iov_len = blob.length;
424
425 subreq = tstream_writev_queue_send(state, ev, ld->conn, ld->outgoing,
426 &state->iov, 1);
427 if (tevent_req_nomem(subreq, req)) {
428 return tevent_req_post(req, ev);
429 }
430 tevent_req_set_callback(subreq, tldap_msg_sent, req);
431 return req;
432 }
433
434 static void tldap_msg_unset_pending(struct tevent_req *req)
435 {
436 struct tldap_msg_state *state = tevent_req_data(
437 req, struct tldap_msg_state);
438 struct tldap_context *ld = state->ld;
439 int num_pending = talloc_array_length(ld->pending);
440 int i;
441
442 if (num_pending == 1) {
443 TALLOC_FREE(ld->pending);
444 return;
445 }
446
447 for (i=0; i<num_pending; i++) {
448 if (req == ld->pending[i]) {
449 break;
450 }
451 }
452 if (i == num_pending) {
453 /*
454 * Something's seriously broken. Just returning here is the
455 * right thing nevertheless, the point of this routine is to
456 * remove ourselves from cli->pending.
457 */
458 return;
459 }
460
461 /*
462 * Remove ourselves from the cli->pending array
463 */
464 if (num_pending > 1) {
465 ld->pending[i] = ld->pending[num_pending-1];
466 }
467
468 /*
469 * No NULL check here, we're shrinking by sizeof(void *), and
470 * talloc_realloc just adjusts the size for this.
471 */
472 ld->pending = talloc_realloc(NULL, ld->pending, struct tevent_req *,
473 num_pending - 1);
474 return;
475 }
476
477 static int tldap_msg_destructor(struct tevent_req *req)
478 {
479 tldap_msg_unset_pending(req);
480 return 0;
481 }
482
483 static bool tldap_msg_set_pending(struct tevent_req *req)
484 {
485 struct tldap_msg_state *state = tevent_req_data(
486 req, struct tldap_msg_state);
487 struct tldap_context *ld;
488 struct tevent_req **pending;
489 int num_pending;
490 struct tevent_req *subreq;
491
492 ld = state->ld;
493 num_pending = talloc_array_length(ld->pending);
494
495 pending = talloc_realloc(ld, ld->pending, struct tevent_req *,
496 num_pending+1);
497 if (pending == NULL) {
498 return false;
499 }
500 pending[num_pending] = req;
501 ld->pending = pending;
502 talloc_set_destructor(req, tldap_msg_destructor);
503
504 if (num_pending > 0) {
505 return true;
506 }
507
508 /*
509 * We're the first ones, add the read_ldap request that waits for the
510 * answer from the server
511 */
512 subreq = read_ldap_send(ld->pending, state->ev, ld->conn);
513 if (subreq == NULL) {
514 tldap_msg_unset_pending(req);
515 return false;
516 }
517 tevent_req_set_callback(subreq, tldap_msg_received, ld);
518 return true;
519 }
520
521 static void tldap_msg_sent(struct tevent_req *subreq)
522 {
523 struct tevent_req *req = tevent_req_callback_data(
524 subreq, struct tevent_req);
525 struct tldap_msg_state *state = tevent_req_data(
526 req, struct tldap_msg_state);
527 ssize_t nwritten;
528 int err;
529
530 nwritten = tstream_writev_queue_recv(subreq, &err);
531 TALLOC_FREE(subreq);
532 if (nwritten == -1) {
533 state->ld->server_down = true;
534 tevent_req_error(req, TLDAP_SERVER_DOWN);
535 return;
536 }
537
538 if (!tldap_msg_set_pending(req)) {
539 tevent_req_nomem(NULL, req);
540 return;
541 }
542 }
543
544 static int tldap_msg_msgid(struct tevent_req *req)
545 {
546 struct tldap_msg_state *state = tevent_req_data(
547 req, struct tldap_msg_state);
548
549 return state->id;
550 }
551
552 static void tldap_msg_received(struct tevent_req *subreq)
553 {
554 struct tldap_context *ld = tevent_req_callback_data(
555 subreq, struct tldap_context);
556 struct tevent_req *req;
557 struct tldap_msg_state *state;
558 struct tevent_context *ev;
559 struct asn1_data *data;
560 uint8_t *inbuf;
561 ssize_t received;
562 size_t num_pending;
563 int i, err, status;
564 int id;
565 uint8_t type;
566 bool ok;
567
568 received = read_ldap_recv(subreq, talloc_tos(), &inbuf, &err);
569 TALLOC_FREE(subreq);
570 if (received == -1) {
571 status = TLDAP_SERVER_DOWN;
572 goto fail;
573 }
574
575 data = asn1_init(talloc_tos());
576 if (data == NULL) {
577 status = TLDAP_NO_MEMORY;
578 goto fail;
579 }
580 asn1_load_nocopy(data, inbuf, received);
581
582 ok = true;
583 ok &= asn1_start_tag(data, ASN1_SEQUENCE(0));
584 ok &= asn1_read_Integer(data, &id);
585 ok &= asn1_peek_uint8(data, &type);
586
587 if (!ok) {
588 status = TLDAP_PROTOCOL_ERROR;
589 goto fail;
590 }
591
592 tldap_debug(ld, TLDAP_DEBUG_TRACE, "tldap_msg_received: got msg %d "
593 "type %d\n", id, (int)type);
594
595 num_pending = talloc_array_length(ld->pending);
596
597 for (i=0; i<num_pending; i++) {
598 if (id == tldap_msg_msgid(ld->pending[i])) {
599 break;
600 }
601 }
602 if (i == num_pending) {
603 /* Dump unexpected reply */
604 tldap_debug(ld, TLDAP_DEBUG_WARNING, "tldap_msg_received: "
605 "No request pending for msg %d\n", id);
606 TALLOC_FREE(data);
607 TALLOC_FREE(inbuf);
608 goto done;
609 }
610
611 req = ld->pending[i];
612 state = tevent_req_data(req, struct tldap_msg_state);
613
614 state->inbuf = talloc_move(state, &inbuf);
615 state->data = talloc_move(state, &data);
616
617 ev = state->ev;
618
619 talloc_set_destructor(req, NULL);
620 tldap_msg_unset_pending(req);
621 num_pending = talloc_array_length(ld->pending);
622
623 tevent_req_done(req);
624
625 done:
626 if (num_pending == 0) {
627 return;
628 }
629 if (talloc_array_length(ld->pending) > num_pending) {
630 /*
631 * The callback functions called from tevent_req_done() above
632 * have put something on the pending queue. We don't have to
633 * trigger the read_ldap_send(), tldap_msg_set_pending() has
634 * done it for us already.
635 */
636 return;
637 }
638
639 state = tevent_req_data(ld->pending[0], struct tldap_msg_state);
640 subreq = read_ldap_send(ld->pending, state->ev, ld->conn);
641 if (subreq == NULL) {
642 status = TLDAP_NO_MEMORY;
643 goto fail;
644 }
645 tevent_req_set_callback(subreq, tldap_msg_received, ld);
646 return;
647
648 fail:
649 while (talloc_array_length(ld->pending) > 0) {
650 req = ld->pending[0];
651 talloc_set_destructor(req, NULL);
652 tldap_msg_destructor(req);
653 tevent_req_error(req, status);
654 }
655 }
656
657 static int tldap_msg_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
658 struct tldap_message **pmsg)
659 {
660 struct tldap_msg_state *state = tevent_req_data(
661 req, struct tldap_msg_state);
662 struct tldap_message *msg;
663 int err;
664 uint8_t msgtype;
665
666 if (tevent_req_is_ldap_error(req, &err)) {
667 return err;
668 }
669
670 if (!asn1_peek_uint8(state->data, &msgtype)) {
671 return TLDAP_PROTOCOL_ERROR;
672 }
673
674 if (pmsg == NULL) {
675 return TLDAP_SUCCESS;
676 }
677
678 msg = talloc_zero(mem_ctx, struct tldap_message);
679 if (msg == NULL) {
680 return TLDAP_NO_MEMORY;
681 }
682 msg->id = state->id;
683
684 msg->inbuf = talloc_move(msg, &state->inbuf);
685 msg->data = talloc_move(msg, &state->data);
686 msg->type = msgtype;
687
688 *pmsg = msg;
689 return TLDAP_SUCCESS;
690 }
691
692 struct tldap_req_state {
693 int id;
694 struct asn1_data *out;
695 struct tldap_message *result;
696 };
697
698 static struct tevent_req *tldap_req_create(TALLOC_CTX *mem_ctx,
699 struct tldap_context *ld,
700 struct tldap_req_state **pstate)
701 {
702 struct tevent_req *req;
703 struct tldap_req_state *state;
704
705 req = tevent_req_create(mem_ctx, &state, struct tldap_req_state);
706 if (req == NULL) {
707 return NULL;
708 }
709 ZERO_STRUCTP(state);
710 state->out = asn1_init(state);
711 if (state->out == NULL) {
712 TALLOC_FREE(req);
713 return NULL;
714 }
715 state->result = NULL;
716 state->id = tldap_next_msgid(ld);
717
718 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
719 asn1_write_Integer(state->out, state->id);
720
721 *pstate = state;
722 return req;
723 }
724
725 static void tldap_save_msg(struct tldap_context *ld, struct tevent_req *req)
726 {
727 struct tldap_req_state *state = tevent_req_data(
728 req, struct tldap_req_state);
729
730 TALLOC_FREE(ld->last_msg);
731 ld->last_msg = talloc_move(ld, &state->result);
732 }
733
734 static char *blob2string_talloc(TALLOC_CTX *mem_ctx, DATA_BLOB blob)
735 {
736 char *result = talloc_array(mem_ctx, char, blob.length+1);
737 memcpy(result, blob.data, blob.length);
738 result[blob.length] = '\0';
739 return result;
740 }
741
742 static bool asn1_read_OctetString_talloc(TALLOC_CTX *mem_ctx,
743 struct asn1_data *data,
744 char **result)
745 {
746 DATA_BLOB string;
747 if (!asn1_read_OctetString(data, mem_ctx, &string))
748 return false;
749 *result = blob2string_talloc(mem_ctx, string);
750 data_blob_free(&string);
751 return true;
752 }
753
754 static bool tldap_decode_controls(struct tldap_req_state *state);
755
756 static bool tldap_decode_response(struct tldap_req_state *state)
757 {
758 struct asn1_data *data = state->result->data;
759 struct tldap_message *msg = state->result;
760 bool ok = true;
761
762 ok &= asn1_read_enumerated(data, &msg->lderr);
763 ok &= asn1_read_OctetString_talloc(msg, data, &msg->res_matcheddn);
764 ok &= asn1_read_OctetString_talloc(msg, data,
765 &msg->res_diagnosticmessage);
766 if (asn1_peek_tag(data, ASN1_CONTEXT(3))) {
767 ok &= asn1_start_tag(data, ASN1_CONTEXT(3));
768 ok &= asn1_read_OctetString_talloc(msg, data,
769 &msg->res_referral);
770 ok &= asn1_end_tag(data);
771 } else {
772 msg->res_referral = NULL;
773 }
774
775 return ok;
776 }
777
778 static void tldap_sasl_bind_done(struct tevent_req *subreq);
779
780 struct tevent_req *tldap_sasl_bind_send(TALLOC_CTX *mem_ctx,
781 struct tevent_context *ev,
782 struct tldap_context *ld,
783 const char *dn,
784 const char *mechanism,
785 DATA_BLOB *creds,
786 struct tldap_control *sctrls,
787 int num_sctrls,
788 struct tldap_control *cctrls,
789 int num_cctrls)
790 {
791 struct tevent_req *req, *subreq;
792 struct tldap_req_state *state;
793
794 req = tldap_req_create(mem_ctx, ld, &state);
795 if (req == NULL) {
796 return NULL;
797 }
798
799 if (dn == NULL) {
800 dn = "";
801 }
802
803 asn1_push_tag(state->out, TLDAP_REQ_BIND);
804 asn1_write_Integer(state->out, ld->ld_version);
805 asn1_write_OctetString(state->out, dn, (dn != NULL) ? strlen(dn) : 0);
806
807 if (mechanism == NULL) {
808 asn1_push_tag(state->out, ASN1_CONTEXT_SIMPLE(0));
809 asn1_write(state->out, creds->data, creds->length);
810 asn1_pop_tag(state->out);
811 } else {
812 asn1_push_tag(state->out, ASN1_CONTEXT(3));
813 asn1_write_OctetString(state->out, mechanism,
814 strlen(mechanism));
815 if ((creds != NULL) && (creds->data != NULL)) {
816 asn1_write_OctetString(state->out, creds->data,
817 creds->length);
818 }
819 asn1_pop_tag(state->out);
820 }
821
822 if (!asn1_pop_tag(state->out)) {
823 tevent_req_error(req, TLDAP_ENCODING_ERROR);
824 return tevent_req_post(req, ev);
825 }
826
827 subreq = tldap_msg_send(state, ev, ld, state->id, state->out,
828 sctrls, num_sctrls);
829 if (tevent_req_nomem(subreq, req)) {
830 return tevent_req_post(req, ev);
831 }
832 tevent_req_set_callback(subreq, tldap_sasl_bind_done, req);
833 return req;
834 }
835
836 static void tldap_sasl_bind_done(struct tevent_req *subreq)
837 {
838 struct tevent_req *req = tevent_req_callback_data(
839 subreq, struct tevent_req);
840 struct tldap_req_state *state = tevent_req_data(
841 req, struct tldap_req_state);
842 int err;
843
844 err = tldap_msg_recv(subreq, state, &state->result);
845 TALLOC_FREE(subreq);
846 if (err != TLDAP_SUCCESS) {
847 tevent_req_error(req, err);
848 return;
849 }
850 if (state->result->type != TLDAP_RES_BIND) {
851 tevent_req_error(req, TLDAP_PROTOCOL_ERROR);
852 return;
853 }
854 if (!asn1_start_tag(state->result->data, state->result->type) ||
855 !tldap_decode_response(state) ||
856 !asn1_end_tag(state->result->data)) {
857 tevent_req_error(req, TLDAP_DECODING_ERROR);
858 return;
859 }
860 /*
861 * TODO: pull the reply blob
862 */
863 if (state->result->lderr != TLDAP_SUCCESS) {
864 tevent_req_error(req, state->result->lderr);
865 return;
866 }
867 tevent_req_done(req);
868 }
869
870 int tldap_sasl_bind_recv(struct tevent_req *req)
871 {
872 int err;
873
874 if (tevent_req_is_ldap_error(req, &err)) {
875 return err;
876 }
877 return TLDAP_SUCCESS;
878 }
879
880 int tldap_sasl_bind(struct tldap_context *ld,
881 const char *dn,
882 const char *mechanism,
883 DATA_BLOB *creds,
884 struct tldap_control *sctrls,
885 int num_sctrls,
886 struct tldap_control *cctrls,
887 int num_cctrls)
888 {
889 TALLOC_CTX *frame = talloc_stackframe();
890 struct tevent_context *ev;
891 struct tevent_req *req;
892 int result;
893
894 ev = event_context_init(frame);
895 if (ev == NULL) {
896 result = TLDAP_NO_MEMORY;
897 goto fail;
898 }
899
900 req = tldap_sasl_bind_send(frame, ev, ld, dn, mechanism, creds,
901 sctrls, num_sctrls, cctrls, num_cctrls);
902 if (req == NULL) {
903 result = TLDAP_NO_MEMORY;
904 goto fail;
905 }
906
907 if (!tevent_req_poll(req, ev)) {
908 result = TLDAP_OPERATIONS_ERROR;
909 goto fail;
910 }
911
912 result = tldap_sasl_bind_recv(req);
913 tldap_save_msg(ld, req);
914 fail:
915 TALLOC_FREE(frame);
916 return result;
917 }
918
919 struct tevent_req *tldap_simple_bind_send(TALLOC_CTX *mem_ctx,
920 struct tevent_context *ev,
921 struct tldap_context *ld,
922 const char *dn,
923 const char *passwd)
924 {
925 DATA_BLOB cred;
926
927 if (passwd != NULL) {
928 cred.data = (uint8_t *)passwd;
929 cred.length = strlen(passwd);
930 } else {
931 cred.data = (uint8_t *)"";
932 cred.length = 0;
933 }
934 return tldap_sasl_bind_send(mem_ctx, ev, ld, dn, NULL, &cred, NULL, 0,
935 NULL, 0);
936 }
937
938 int tldap_simple_bind_recv(struct tevent_req *req)
939 {
940 return tldap_sasl_bind_recv(req);
941 }
942
943 int tldap_simple_bind(struct tldap_context *ld, const char *dn,
944 const char *passwd)
945 {
946 DATA_BLOB cred;
947
948 if (passwd != NULL) {
949 cred.data = (uint8_t *)passwd;
950 cred.length = strlen(passwd);
951 } else {
952 cred.data = (uint8_t *)"";
953 cred.length = 0;
954 }
955 return tldap_sasl_bind(ld, dn, NULL, &cred, NULL, 0, NULL, 0);
956 }
957
958 /*****************************************************************************/
959
960 /* can't use isalpha() as only a strict set is valid for LDAP */
961
962 static bool tldap_is_alpha(char c)
963 {
964 return (((c >= 'a') && (c <= 'z')) || \
965 ((c >= 'A') && (c <= 'Z')));
966 }
967
968 static bool tldap_is_adh(char c)
969 {
970 return tldap_is_alpha(c) || isdigit(c) || (c == '-');
971 }
972
973 #define TLDAP_FILTER_AND ASN1_CONTEXT(0)
974 #define TLDAP_FILTER_OR ASN1_CONTEXT(1)
975 #define TLDAP_FILTER_NOT ASN1_CONTEXT(2)
976 #define TLDAP_FILTER_EQ ASN1_CONTEXT(3)
977 #define TLDAP_FILTER_SUB ASN1_CONTEXT(4)
978 #define TLDAP_FILTER_LE ASN1_CONTEXT(5)
979 #define TLDAP_FILTER_GE ASN1_CONTEXT(6)
980 #define TLDAP_FILTER_PRES ASN1_CONTEXT_SIMPLE(7)
981 #define TLDAP_FILTER_APX ASN1_CONTEXT(8)
982 #define TLDAP_FILTER_EXT ASN1_CONTEXT(9)
983
984 #define TLDAP_SUB_INI ASN1_CONTEXT_SIMPLE(0)
985 #define TLDAP_SUB_ANY ASN1_CONTEXT_SIMPLE(1)
986 #define TLDAP_SUB_FIN ASN1_CONTEXT_SIMPLE(2)
987
988
989 /* oid's should be numerical only in theory,
990 * but apparently some broken servers may have alphanum aliases instead.
991 * Do like openldap libraries and allow alphanum aliases for oids, but
992 * do not allow Tagging options in that case.
993 */
994 static bool tldap_is_attrdesc(const char *s, int len, bool no_tagopts)
995 {
996 bool is_oid = false;
997 bool dot = false;
998 int i;
999
1000 /* first char has stricter rules */
1001 if (isdigit(*s)) {
1002 is_oid = true;
1003 } else if (!tldap_is_alpha(*s)) {
1004 /* bad first char */
1005 return false;
1006 }
1007
1008 for (i = 1; i < len; i++) {
1009
1010 if (is_oid) {
1011 if (isdigit(s[i])) {
1012 dot = false;
1013 continue;
1014 }
1015 if (s[i] == '.') {
1016 if (dot) {
1017 /* malformed */
1018 return false;
1019 }
1020 dot = true;
1021 continue;
1022 }
1023 } else {
1024 if (tldap_is_adh(s[i])) {
1025 continue;
1026 }
1027 }
1028
1029 if (s[i] == ';') {
1030 if (no_tagopts) {
1031 /* no tagging options */
1032 return false;
1033 }
1034 if (dot) {
1035 /* malformed */
1036 return false;
1037 }
1038 if ((i + 1) == len) {
1039 /* malformed */
1040 return false;
1041 }
1042
1043 is_oid = false;
1044 continue;
1045 }
1046 }
1047
1048 if (dot) {
1049 /* malformed */
1050 return false;
1051 }
1052
1053 return true;
1054 }
1055
1056 /* this function copies the value until the closing parenthesis is found. */
1057 static char *tldap_get_val(TALLOC_CTX *memctx,
1058 const char *value, const char **_s)
1059 {
1060 const char *s = value;
1061
1062 /* find terminator */
1063 while (*s) {
1064 s = strchr(s, ')');
1065 if (s && (*(s - 1) == '\\')) {
1066 continue;
1067 }
1068 break;
1069 }
1070 if (!s || !(*s == ')')) {
1071 /* malformed filter */
1072 return NULL;
1073 }
1074
1075 *_s = s;
1076
1077 return talloc_strndup(memctx, value, s - value);
1078 }
1079
1080 static int tldap_hex2char(const char *x)
1081 {
1082 if (isxdigit(x[0]) && isxdigit(x[1])) {
1083 const char h1 = x[0], h2 = x[1];
1084 int c;
1085
1086 if (h1 >= 'a') c = h1 - (int)'a' + 10;
1087 else if (h1 >= 'A') c = h1 - (int)'A' + 10;
1088 else if (h1 >= '0') c = h1 - (int)'0';
1089 c = c << 4;
1090 if (h2 >= 'a') c += h2 - (int)'a' + 10;
1091 else if (h2 >= 'A') c += h2 - (int)'A' + 10;
1092 else if (h2 >= '0') c += h2 - (int)'0';
1093
1094 return c;
1095 }
1096
1097 return -1;
1098 }
1099
1100 static bool tldap_find_first_star(const char *val, const char **star)
1101 {
1102 const char *s;
1103
1104 for (s = val; *s; s++) {
1105 switch (*s) {
1106 case '\\':
1107 if (isxdigit(s[1]) && isxdigit(s[2])) {
1108 s += 2;
1109 break;
1110 }
1111 /* not hex based escape, check older syntax */
1112 switch (s[1]) {
1113 case '(':
1114 case ')':
1115 case '*':
1116 case '\\':
1117 s++;
1118 break;
1119 default:
1120 /* invalid escape sequence */
1121 return false;
1122 }
1123 break;
1124 case ')':
1125 /* end of val, nothing found */
1126 *star = s;
1127 return true;
1128
1129 case '*':
1130 *star = s;
1131 return true;
1132 }
1133 }
1134
1135 /* string ended without closing parenthesis, filter is malformed */
1136 return false;
1137 }
1138
1139 static bool tldap_unescape_inplace(char *value, size_t *val_len)
1140 {
1141 int c, i, p;
1142
1143 for (i = 0,p = 0; i < *val_len; i++) {
1144
1145 switch (value[i]) {
1146 case '(':
1147 case ')':
1148 case '*':
1149 /* these must be escaped */
1150 return false;
1151
1152 case '\\':
1153 if (!value[i + 1]) {
1154 /* invalid EOL */
1155 return false;
1156 }
1157 i++;
1158
1159 c = tldap_hex2char(&value[i]);
1160 if (c >= 0 && c < 256) {
1161 value[p] = c;
1162 i++;
1163 p++;
1164 break;
1165 }
1166
1167 switch (value[i]) {
1168 case '(':
1169 case ')':
1170 case '*':
1171 case '\\':
1172 value[p] = value[i];
1173 p++;
1174 default:
1175 /* invalid */
1176 return false;
1177 }
1178 break;
1179
1180 default:
1181 value[p] = value[i];
1182 p++;
1183 }
1184 }
1185 value[p] = '\0';
1186 *val_len = p;
1187 return true;
1188 }
1189
1190 static bool tldap_push_filter_basic(struct tldap_context *ld,
1191 struct asn1_data *data,
1192 const char **_s);
1193 static bool tldap_push_filter_substring(struct tldap_context *ld,
1194 struct asn1_data *data,
1195 const char *val,
1196 const char **_s);
1197 static bool tldap_push_filter_int(struct tldap_context *ld,
1198 struct asn1_data *data,
1199 const char **_s)
1200 {
1201 const char *s = *_s;
1202 bool ret;
1203
1204 if (*s != '(') {
1205 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1206 "Incomplete or malformed filter\n");
1207 return false;
1208 }
1209 s++;
1210
1211 /* we are right after a parenthesis,
1212 * find out what op we have at hand */
1213 switch (*s) {
1214 case '&':
1215 tldap_debug(ld, TLDAP_DEBUG_TRACE, "Filter op: AND\n");
1216 asn1_push_tag(data, TLDAP_FILTER_AND);
1217 s++;
1218 break;
1219
1220 case '|':
1221 tldap_debug(ld, TLDAP_DEBUG_TRACE, "Filter op: OR\n");
1222 asn1_push_tag(data, TLDAP_FILTER_OR);
1223 s++;
1224 break;
1225
1226 case '!':
1227 tldap_debug(ld, TLDAP_DEBUG_TRACE, "Filter op: NOT\n");
1228 asn1_push_tag(data, TLDAP_FILTER_NOT);
1229 s++;
1230 ret = tldap_push_filter_int(ld, data, &s);
1231 if (!ret) {
1232 return false;
1233 }
1234 asn1_pop_tag(data);
1235 goto done;
1236
1237 case '(':
1238 case ')':
1239 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1240 "Invalid parenthesis '%c'\n", *s);
1241 return false;
1242
1243 case '\0':
1244 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1245 "Invalid filter termination\n");
1246 return false;
1247
1248 default:
1249 ret = tldap_push_filter_basic(ld, data, &s);
1250 if (!ret) {
1251 return false;
1252 }
1253 goto done;
1254 }
1255
1256 /* only and/or filters get here.
1257 * go through the list of filters */
1258
1259 if (*s == ')') {
1260 /* RFC 4526: empty and/or */
1261 asn1_pop_tag(data);
1262 goto done;
1263 }
1264
1265 while (*s) {
1266 ret = tldap_push_filter_int(ld, data, &s);
1267 if (!ret) {
1268 return false;
1269 }
1270
1271 if (*s == ')') {
1272 /* end of list, return */
1273 asn1_pop_tag(data);
1274 break;
1275 }
1276 }
1277
1278 done:
1279 if (*s != ')') {
1280 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1281 "Incomplete or malformed filter\n");
1282 return false;
1283 }
1284 s++;
1285
1286 if (data->has_error) {
1287 return false;
1288 }
1289
1290 *_s = s;
1291 return true;
1292 }
1293
1294
1295 static bool tldap_push_filter_basic(struct tldap_context *ld,
1296 struct asn1_data *data,
1297 const char **_s)
1298 {
1299 TALLOC_CTX *tmpctx = talloc_tos();
1300 const char *s = *_s;
1301 const char *e;
1302 const char *eq;
1303 const char *val;
1304 const char *type;
1305 const char *dn;
1306 const char *rule;
1307 const char *star;
1308 size_t type_len;
1309 char *uval;
1310 size_t uval_len;
1311 bool write_octect = true;
1312 bool ret;
1313
1314 eq = strchr(s, '=');
1315 if (!eq) {
1316 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1317 "Invalid filter, missing equal sign\n");
1318 return false;
1319 }
1320
1321 val = eq + 1;
1322 e = eq - 1;
1323
1324 switch (*e) {
1325 case '<':
1326 asn1_push_tag(data, TLDAP_FILTER_LE);
1327 break;
1328
1329 case '>':
1330 asn1_push_tag(data, TLDAP_FILTER_GE);
1331 break;
1332
1333 case '~':
1334 asn1_push_tag(data, TLDAP_FILTER_APX);
1335 break;
1336
1337 case ':':
1338 asn1_push_tag(data, TLDAP_FILTER_EXT);
1339 write_octect = false;
1340
1341 type = NULL;
1342 dn = NULL;
1343 rule = NULL;
1344
1345 if (*s == ':') { /* [:dn]:rule:= value */
1346 if (s == e) {
1347 /* malformed filter */
1348 return false;
1349 }
1350 dn = s;
1351 } else { /* type[:dn][:rule]:= value */
1352 type = s;
1353 dn = strchr(s, ':');
1354 type_len = dn - type;
1355 if (dn == e) { /* type:= value */
1356 dn = NULL;
1357 }
1358 }
1359 if (dn) {
1360 dn++;
1361
1362 rule = strchr(dn, ':');
1363 if ((rule == dn + 1) || rule + 1 == e) {
1364 /* malformed filter, contains "::" */
1365 return false;
1366 }
1367
1368 if (StrnCaseCmp(dn, "dn:", 3) != 0) {
1369 if (rule == e) {
1370 rule = dn;
1371 dn = NULL;
1372 } else {
1373 /* malformed filter. With two
1374 * optionals, the first must be "dn"
1375 */
1376 return false;
1377 }
1378 } else {
1379 if (rule == e) {
1380 rule = NULL;
1381 } else {
1382 rule++;
1383 }
1384 }
1385 }
1386
1387 if (!type && !dn && !rule) {
1388 /* malformed filter, there must be at least one */
1389 return false;
1390 }
1391
1392 /*
1393 MatchingRuleAssertion ::= SEQUENCE {
1394 matchingRule [1] MatchingRuleID OPTIONAL,
1395 type [2] AttributeDescription OPTIONAL,
1396 matchValue [3] AssertionValue,
1397 dnAttributes [4] BOOLEAN DEFAULT FALSE
1398 }
1399 */
1400
1401 /* check and add rule */
1402 if (rule) {
1403 ret = tldap_is_attrdesc(rule, e - rule, true);
1404 if (!ret) {
1405 return false;
1406 }
1407 asn1_push_tag(data, ASN1_CONTEXT_SIMPLE(1));
1408 asn1_write(data, rule, e - rule);
1409 asn1_pop_tag(data);
1410 }
1411
1412 /* check and add type */
1413 if (type) {
1414 ret = tldap_is_attrdesc(type, type_len, false);
1415 if (!ret) {
1416 return false;
1417 }
1418 asn1_push_tag(data, ASN1_CONTEXT_SIMPLE(2));
1419 asn1_write(data, type, type_len);
1420 asn1_pop_tag(data);
1421 }
1422
1423 uval = tldap_get_val(tmpctx, val, _s);
1424 if (!uval) {
1425 return false;
1426 }
1427 uval_len = *_s - val;
1428 ret = tldap_unescape_inplace(uval, &uval_len);
1429 if (!ret) {
1430 return false;
1431 }
1432
1433 asn1_push_tag(data, ASN1_CONTEXT_SIMPLE(3));
1434 asn1_write(data, uval, uval_len);
1435 asn1_pop_tag(data);
1436
1437 asn1_push_tag(data, ASN1_CONTEXT_SIMPLE(4));
1438 asn1_write_uint8(data, dn?1:0);
1439 asn1_pop_tag(data);
1440 break;
1441
1442 default:
1443 e = eq;
1444
1445 ret = tldap_is_attrdesc(s, e - s, false);
1446 if (!ret) {
1447 return false;
1448 }
1449
1450 if (strncmp(val, "*)", 2) == 0) {
1451 /* presence */
1452 asn1_push_tag(data, TLDAP_FILTER_PRES);
1453 asn1_write(data, s, e - s);
1454 *_s = val + 1;
1455 write_octect = false;
1456 break;
1457 }
1458
1459 ret = tldap_find_first_star(val, &star);
1460 if (!ret) {
1461 return false;
1462 }
1463 if (*star == '*') {
1464 /* substring */
1465 asn1_push_tag(data, TLDAP_FILTER_SUB);
1466 asn1_write_OctetString(data, s, e - s);
1467 ret = tldap_push_filter_substring(ld, data, val, &s);
1468 if (!ret) {
1469 return false;
1470 }
1471 *_s = s;
1472 write_octect = false;
1473 break;
1474 }
1475
1476 /* if nothing else, then it is just equality */
1477 asn1_push_tag(data, TLDAP_FILTER_EQ);
1478 write_octect = true;
1479 break;
1480 }
1481
1482 if (write_octect) {
1483 uval = tldap_get_val(tmpctx, val, _s);
1484 if (!uval) {
1485 return false;
1486 }
1487 uval_len = *_s - val;
1488 ret = tldap_unescape_inplace(uval, &uval_len);
1489 if (!ret) {
1490 return false;
1491 }
1492
1493 asn1_write_OctetString(data, s, e - s);
1494 asn1_write_OctetString(data, uval, uval_len);
1495 }
1496
1497 if (data->has_error) {
1498 return false;
1499 }
1500 asn1_pop_tag(data);
1501 return true;
1502 }
1503
1504 static bool tldap_push_filter_substring(struct tldap_context *ld,
1505 struct asn1_data *data,
1506 const char *val,
1507 const char **_s)
1508 {
1509 TALLOC_CTX *tmpctx = talloc_tos();
1510 bool initial = true;
1511 const char *star;
1512 char *chunk;
1513 size_t chunk_len;
1514 bool ret;
1515
1516 /*
1517 SubstringFilter ::= SEQUENCE {
1518 type AttributeDescription,
1519 -- at least one must be present
1520 substrings SEQUENCE OF CHOICE {
1521 initial [0] LDAPString,
1522 any [1] LDAPString,
1523 final [2] LDAPString } }
1524 */
1525 asn1_push_tag(data, ASN1_SEQUENCE(0));
1526
1527 do {
1528 ret = tldap_find_first_star(val, &star);
1529 if (!ret) {
1530 return false;
1531 }
1532 chunk_len = star - val;
1533
1534 switch (*star) {
1535 case '*':
1536 if (!initial && chunk_len == 0) {
1537 /* found '**', which is illegal */
1538 return false;
1539 }
1540 break;
1541 case ')':
1542 if (initial) {
1543 /* no stars ?? */
1544 return false;
1545 }
1546 /* we are done */
1547 break;
1548 default:
1549 /* ?? */
1550 return false;
1551 }
1552
1553 if (initial && chunk_len == 0) {
1554 val = star + 1;
1555 initial = false;
1556 continue;
1557 }
1558
1559 chunk = talloc_strndup(tmpctx, val, chunk_len);
1560 if (!chunk) {
1561 return false;
1562 }
1563 ret = tldap_unescape_inplace(chunk, &chunk_len);
1564 if (!ret) {
1565 return false;
1566 }
1567 switch (*star) {
1568 case '*':
1569 if (initial) {
1570 asn1_push_tag(data, TLDAP_SUB_INI);
1571 initial = false;
1572 } else {
1573 asn1_push_tag(data, TLDAP_SUB_ANY);
1574 }
1575 break;
1576 case ')':
1577 asn1_push_tag(data, TLDAP_SUB_FIN);
1578 break;
1579 default:
1580 /* ?? */
1581 return false;
1582 }
1583 asn1_write(data, chunk, chunk_len);
1584 asn1_pop_tag(data);
1585
1586 val = star + 1;
1587
1588 } while (*star == '*');
1589
1590 *_s = star;
1591
1592 /* end of sequence */
1593 asn1_pop_tag(data);
1594 return true;
1595 }
1596
1597 /* NOTE: although openldap libraries allow for spaces in some places, mosly
1598 * around parenthesis, we do not allow any spaces (except in values of
1599 * course) as I couldn't fine any place in RFC 4512 or RFC 4515 where
1600 * leading or trailing spaces where allowed.
1601 */
1602 static bool tldap_push_filter(struct tldap_context *ld,
1603 struct asn1_data *data,
1604 const char *filter)
1605 {
1606 const char *s = filter;
1607 bool ret;
1608
1609 ret = tldap_push_filter_int(ld, data, &s);
1610 if (ret && *s) {
1611 tldap_debug(ld, TLDAP_DEBUG_ERROR,
1612 "Incomplete or malformed filter\n");
1613 return false;
1614 }
1615 return ret;
1616 }
1617
1618 /*****************************************************************************/
1619
1620 static void tldap_search_done(struct tevent_req *subreq);
1621
1622 struct tevent_req *tldap_search_send(TALLOC_CTX *mem_ctx,
1623 struct tevent_context *ev,
1624 struct tldap_context *ld,
1625 const char *base, int scope,
1626 const char *filter,
1627 const char **attrs,
1628 int num_attrs,
1629 int attrsonly,
1630 struct tldap_control *sctrls,
1631 int num_sctrls,
1632 struct tldap_control *cctrls,
1633 int num_cctrls,
1634 int timelimit,
1635 int sizelimit,
1636 int deref)
1637 {
1638 struct tevent_req *req, *subreq;
1639 struct tldap_req_state *state;
1640 int i;
1641
1642 req = tldap_req_create(mem_ctx, ld, &state);
1643 if (req == NULL) {
1644 return NULL;
1645 }
1646
1647 asn1_push_tag(state->out, TLDAP_REQ_SEARCH);
1648 asn1_write_OctetString(state->out, base, strlen(base));
1649 asn1_write_enumerated(state->out, scope);
1650 asn1_write_enumerated(state->out, deref);
1651 asn1_write_Integer(state->out, sizelimit);
1652 asn1_write_Integer(state->out, timelimit);
1653 asn1_write_BOOLEAN(state->out, attrsonly);
1654
1655 if (!tldap_push_filter(ld, state->out, filter)) {
1656 goto encoding_error;
1657 }
1658
1659 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
1660 for (i=0; i<num_attrs; i++) {
1661 asn1_write_OctetString(state->out, attrs[i], strlen(attrs[i]));
1662 }
1663 asn1_pop_tag(state->out);
1664 asn1_pop_tag(state->out);
1665
1666 subreq = tldap_msg_send(state, ev, ld, state->id, state->out,
1667 sctrls, num_sctrls);
1668 if (tevent_req_nomem(subreq, req)) {
1669 return tevent_req_post(req, ev);
1670 }
1671 tevent_req_set_callback(subreq, tldap_search_done, req);
1672 return req;
1673
1674 encoding_error:
1675 tevent_req_error(req, TLDAP_ENCODING_ERROR);
1676 return tevent_req_post(req, ev);
1677 }
1678
1679 static void tldap_search_done(struct tevent_req *subreq)
1680 {
1681 struct tevent_req *req = tevent_req_callback_data(
1682 subreq, struct tevent_req);
1683 struct tldap_req_state *state = tevent_req_data(
1684 req, struct tldap_req_state);
1685 int err;
1686
1687 err = tldap_msg_recv(subreq, state, &state->result);
1688 if (err != TLDAP_SUCCESS) {
1689 tevent_req_error(req, err);
1690 return;
1691 }
1692 switch (state->result->type) {
1693 case TLDAP_RES_SEARCH_ENTRY:
1694 case TLDAP_RES_SEARCH_REFERENCE:
1695 tevent_req_notify_callback(req);
1696 if (!tldap_msg_set_pending(subreq)) {
1697 tevent_req_nomem(NULL, req);
1698 return;
1699 }
1700 break;
1701 case TLDAP_RES_SEARCH_RESULT:
1702 TALLOC_FREE(subreq);
1703 if (!asn1_start_tag(state->result->data,
1704 state->result->type) ||
1705 !tldap_decode_response(state) ||
1706 !asn1_end_tag(state->result->data) ||
1707 !tldap_decode_controls(state)) {
1708 tevent_req_error(req, TLDAP_DECODING_ERROR);
1709 return;
1710 }
1711 tevent_req_done(req);
1712 break;
1713 default:
1714 tevent_req_error(req, TLDAP_PROTOCOL_ERROR);
1715 return;
1716 }
1717 }
1718
1719 int tldap_search_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1720 struct tldap_message **pmsg)
1721 {
1722 struct tldap_req_state *state = tevent_req_data(
1723 req, struct tldap_req_state);
1724 int err;
1725
1726 if (!tevent_req_is_in_progress(req)
1727 && tevent_req_is_ldap_error(req, &err)) {
1728 return err;
1729 }
1730
1731 if (tevent_req_is_in_progress(req)) {
1732 switch (state->result->type) {
1733 case TLDAP_RES_SEARCH_ENTRY:
1734 case TLDAP_RES_SEARCH_REFERENCE:
1735 break;
1736 default:
1737 return TLDAP_OPERATIONS_ERROR;
1738 }
1739 }
1740
1741 *pmsg = talloc_move(mem_ctx, &state->result);
1742 return TLDAP_SUCCESS;
1743 }
1744
1745 struct tldap_sync_search_state {
1746 TALLOC_CTX *mem_ctx;
1747 struct tldap_message **entries;
1748 struct tldap_message **refs;
1749 int rc;
1750 };
1751
1752 static void tldap_search_cb(struct tevent_req *req)
1753 {
1754 struct tldap_sync_search_state *state =
1755 (struct tldap_sync_search_state *)
1756 tevent_req_callback_data_void(req);
1757 struct tldap_message *msg, **tmp;
1758 int rc, num_entries, num_refs;
1759
1760 rc = tldap_search_recv(req, talloc_tos(), &msg);
1761 if (rc != TLDAP_SUCCESS) {
1762 state->rc = rc;
1763 return;
1764 }
1765
1766 switch (tldap_msg_type(msg)) {
1767 case TLDAP_RES_SEARCH_ENTRY:
1768 num_entries = talloc_array_length(state->entries);
1769 tmp = talloc_realloc(state->mem_ctx, state->entries,
1770 struct tldap_message *, num_entries + 1);
1771 if (tmp == NULL) {
1772 state->rc = TLDAP_NO_MEMORY;
1773 return;
1774 }
1775 state->entries = tmp;
1776 state->entries[num_entries] = talloc_move(state->entries,
1777 &msg);
1778 break;
1779 case TLDAP_RES_SEARCH_REFERENCE:
1780 num_refs = talloc_array_length(state->refs);
1781 tmp = talloc_realloc(state->mem_ctx, state->refs,
1782 struct tldap_message *, num_refs + 1);
1783 if (tmp == NULL) {
1784 state->rc = TLDAP_NO_MEMORY;
1785 return;
1786 }
1787 state->refs = tmp;
1788 state->refs[num_refs] = talloc_move(state->refs, &msg);
1789 break;
1790 case TLDAP_RES_SEARCH_RESULT:
1791 state->rc = TLDAP_SUCCESS;
1792 break;
1793 default:
1794 state->rc = TLDAP_PROTOCOL_ERROR;
1795 break;
1796 }
1797 }
1798
1799 int tldap_search(struct tldap_context *ld,
1800 const char *base, int scope, const char *filter,
1801 const char **attrs, int num_attrs, int attrsonly,
1802 struct tldap_control *sctrls, int num_sctrls,
1803 struct tldap_control *cctrls, int num_cctrls,
1804 int timelimit, int sizelimit, int deref,
1805 TALLOC_CTX *mem_ctx, struct tldap_message ***entries,
1806 struct tldap_message ***refs)
1807 {
1808 TALLOC_CTX *frame = talloc_stackframe();
1809 struct tevent_context *ev;
1810 struct tevent_req *req;
1811 struct tldap_sync_search_state state;
1812
1813 ZERO_STRUCT(state);
1814 state.mem_ctx = mem_ctx;
1815 state.rc = TLDAP_SUCCESS;
1816
1817 ev = event_context_init(frame);
1818 if (ev == NULL) {
1819 state.rc = TLDAP_NO_MEMORY;
1820 goto fail;
1821 }
1822
1823 req = tldap_search_send(frame, ev, ld, base, scope, filter,
1824 attrs, num_attrs, attrsonly,
1825 sctrls, num_sctrls, cctrls, num_cctrls,
1826 timelimit, sizelimit, deref);
1827 if (req == NULL) {
1828 state.rc = TLDAP_NO_MEMORY;
1829 goto fail;
1830 }
1831
1832 tevent_req_set_callback(req, tldap_search_cb, &state);
1833
1834 if (!tevent_req_is_in_progress(req)) {
1835 /* an error happend before sending */
1836 if (tevent_req_is_ldap_error(req, &state.rc)) {
1837 goto fail;
1838 }
1839 }
1840
1841 while (tevent_req_is_in_progress(req)
1842 && (state.rc == TLDAP_SUCCESS)) {
1843 if (tevent_loop_once(ev) == -1) {
1844 return TLDAP_OPERATIONS_ERROR;
1845 }
1846 }
1847
1848 if (state.rc != TLDAP_SUCCESS) {
1849 return state.rc;
1850 }
1851
1852 if (entries != NULL) {
1853 *entries = state.entries;
1854 } else {
1855 TALLOC_FREE(state.entries);
1856 }
1857 if (refs != NULL) {
1858 *refs = state.refs;
1859 } else {
1860 TALLOC_FREE(state.refs);
1861 }
1862 tldap_save_msg(ld, req);
1863 fail:
1864 TALLOC_FREE(frame);
1865 return state.rc;
1866 }
1867
1868 static bool tldap_parse_search_entry(struct tldap_message *msg)
1869 {
1870 int num_attribs = 0;
1871
1872 asn1_start_tag(msg->data, msg->type);
1873
1874 /* dn */
1875
1876 asn1_read_OctetString_talloc(msg, msg->data, &msg->dn);
1877 if (msg->dn == NULL) {
1878 return false;
1879 }
1880
1881 /*
1882 * Attributes: We overallocate msg->attribs by one, so that while
1883 * looping over the attributes we can directly parse into the last
1884 * array element. Same for the values in the inner loop.
1885 */
1886
1887 msg->attribs = talloc_array(msg, struct tldap_attribute, 1);
1888 if (msg->attribs == NULL) {
1889 return false;
1890 }
1891
1892 asn1_start_tag(msg->data, ASN1_SEQUENCE(0));
1893 while (asn1_peek_tag(msg->data, ASN1_SEQUENCE(0))) {
1894 struct tldap_attribute *attrib;
1895 int num_values = 0;
1896
1897 attrib = &msg->attribs[num_attribs];
1898 attrib->values = talloc_array(msg->attribs, DATA_BLOB, 1);
1899 if (attrib->values == NULL) {
1900 return false;
1901 }
1902 asn1_start_tag(msg->data, ASN1_SEQUENCE(0));
1903 asn1_read_OctetString_talloc(msg->attribs, msg->data,
1904 &attrib->name);
1905 asn1_start_tag(msg->data, ASN1_SET);
1906
1907 while (asn1_peek_tag(msg->data, ASN1_OCTET_STRING)) {
1908 asn1_read_OctetString(msg->data, msg,
1909 &attrib->values[num_values]);
1910
1911 attrib->values = talloc_realloc(
1912 msg->attribs, attrib->values, DATA_BLOB,
1913 num_values + 2);
1914 if (attrib->values == NULL) {
1915 return false;
1916 }
1917 num_values += 1;
1918 }
1919 attrib->values = talloc_realloc(msg->attribs, attrib->values,
1920 DATA_BLOB, num_values);
1921 attrib->num_values = num_values;
1922
1923 asn1_end_tag(msg->data); /* ASN1_SET */
1924 asn1_end_tag(msg->data); /* ASN1_SEQUENCE(0) */
1925 msg->attribs = talloc_realloc(
1926 msg, msg->attribs, struct tldap_attribute,
1927 num_attribs + 2);
1928 if (msg->attribs == NULL) {
1929 return false;
1930 }
1931 num_attribs += 1;
1932 }
1933 msg->attribs = talloc_realloc(
1934 msg, msg->attribs, struct tldap_attribute, num_attribs);
1935 asn1_end_tag(msg->data);
1936 if (msg->data->has_error) {
1937 return false;
1938 }
1939 return true;
1940 }
1941
1942 bool tldap_entry_dn(struct tldap_message *msg, char **dn)
1943 {
1944 if ((msg->dn == NULL) && (!tldap_parse_search_entry(msg))) {
1945 return false;
1946 }
1947 *dn = msg->dn;
1948 return true;
1949 }
1950
1951 bool tldap_entry_attributes(struct tldap_message *msg, int *num_attributes,
1952 struct tldap_attribute **attributes)
1953 {
1954 if ((msg->dn == NULL) && (!tldap_parse_search_entry(msg))) {
1955 return false;
1956 }
1957 *attributes = msg->attribs;
1958 *num_attributes = talloc_array_length(msg->attribs);
1959 return true;
1960 }
1961
1962 static bool tldap_decode_controls(struct tldap_req_state *state)
1963 {
1964 struct tldap_message *msg = state->result;
1965 struct asn1_data *data = msg->data;
1966 struct tldap_control *sctrls = NULL;
1967 int num_controls = 0;
1968
1969 msg->res_sctrls = NULL;
1970
1971 if (!asn1_peek_tag(data, ASN1_CONTEXT(0))) {
1972 return true;
1973 }
1974
1975 asn1_start_tag(data, ASN1_CONTEXT(0));
1976
1977 while (asn1_peek_tag(data, ASN1_SEQUENCE(0))) {
1978 struct tldap_control *c;
1979 char *oid = NULL;
1980
1981 sctrls = talloc_realloc(msg, sctrls, struct tldap_control,
1982 num_controls + 1);
1983 if (sctrls == NULL) {
1984 return false;
1985 }
1986 c = &sctrls[num_controls];
1987
1988 asn1_start_tag(data, ASN1_SEQUENCE(0));
1989 asn1_read_OctetString_talloc(msg, data, &oid);
1990 if ((data->has_error) || (oid == NULL)) {
1991 return false;
1992 }
1993 c->oid = oid;
1994 if (asn1_peek_tag(data, ASN1_BOOLEAN)) {
1995 asn1_read_BOOLEAN(data, &c->critical);
1996 } else {
1997 c->critical = false;
1998 }
1999 c->value = data_blob_null;
2000 if (asn1_peek_tag(data, ASN1_OCTET_STRING) &&
2001 !asn1_read_OctetString(data, msg, &c->value)) {
2002 return false;
2003 }
2004 asn1_end_tag(data); /* ASN1_SEQUENCE(0) */
2005
2006 num_controls += 1;
2007 }
2008
2009 asn1_end_tag(data); /* ASN1_CONTEXT(0) */
2010
2011 if (data->has_error) {
2012 TALLOC_FREE(sctrls);
2013 return false;
2014 }
2015 msg->res_sctrls = sctrls;
2016 return true;
2017 }
2018
2019 static void tldap_simple_done(struct tevent_req *subreq, int type)
2020 {
2021 struct tevent_req *req = tevent_req_callback_data(
2022 subreq, struct tevent_req);
2023 struct tldap_req_state *state = tevent_req_data(
2024 req, struct tldap_req_state);
2025 int err;
2026
2027 err = tldap_msg_recv(subreq, state, &state->result);
2028 TALLOC_FREE(subreq);
2029 if (err != TLDAP_SUCCESS) {
2030 tevent_req_error(req, err);
2031 return;
2032 }
2033 if (state->result->type != type) {
2034 tevent_req_error(req, TLDAP_PROTOCOL_ERROR);
2035 return;
2036 }
2037 if (!asn1_start_tag(state->result->data, state->result->type) ||
2038 !tldap_decode_response(state) ||
2039 !asn1_end_tag(state->result->data) ||
2040 !tldap_decode_controls(state)) {
2041 tevent_req_error(req, TLDAP_DECODING_ERROR);
2042 return;
2043 }
2044 if (state->result->lderr != TLDAP_SUCCESS) {
2045 tevent_req_error(req, state->result->lderr);
2046 return;
2047 }
2048 tevent_req_done(req);
2049 }
2050
2051 static int tldap_simple_recv(struct tevent_req *req)
2052 {
2053 int err;
2054 if (tevent_req_is_ldap_error(req, &err)) {
2055 return err;
2056 }
2057 return TLDAP_SUCCESS;
2058 }
2059
2060 static void tldap_add_done(struct tevent_req *subreq);
2061
2062 struct tevent_req *tldap_add_send(TALLOC_CTX *mem_ctx,
2063 struct tevent_context *ev,
2064 struct tldap_context *ld,
2065 const char *dn,
2066 struct tldap_mod *attributes,
2067 int num_attributes,
2068 struct tldap_control *sctrls,
2069 int num_sctrls,
2070 struct tldap_control *cctrls,
2071 int num_cctrls)
2072 {
2073 struct tevent_req *req, *subreq;
2074 struct tldap_req_state *state;
2075 int i, j;
2076
2077 req = tldap_req_create(mem_ctx, ld, &state);
2078 if (req == NULL) {
2079 return NULL;
2080 }
2081
2082 asn1_push_tag(state->out, TLDAP_REQ_ADD);
2083 asn1_write_OctetString(state->out, dn, strlen(dn));
2084 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
2085
2086 for (i=0; i<num_attributes; i++) {
2087 struct tldap_mod *attrib = &attributes[i];
2088 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
2089 asn1_write_OctetString(state->out, attrib->attribute,
2090 strlen(attrib->attribute));
2091 asn1_push_tag(state->out, ASN1_SET);
2092 for (j=0; j<attrib->num_values; j++) {
2093 asn1_write_OctetString(state->out,
2094 attrib->values[j].data,
2095 attrib->values[j].length);
2096 }
2097 asn1_pop_tag(state->out);
2098 asn1_pop_tag(state->out);
2099 }
2100
2101 asn1_pop_tag(state->out);
2102 asn1_pop_tag(state->out);
2103
2104 subreq = tldap_msg_send(state, ev, ld, state->id, state->out,
2105 sctrls, num_sctrls);
2106 if (tevent_req_nomem(subreq, req)) {
2107 return tevent_req_post(req, ev);
2108 }
2109 tevent_req_set_callback(subreq, tldap_add_done, req);
2110 return req;
2111 }
2112
2113 static void tldap_add_done(struct tevent_req *subreq)
2114 {
2115 tldap_simple_done(subreq, TLDAP_RES_ADD);
2116 }
2117
2118 int tldap_add_recv(struct tevent_req *req)
2119 {
2120 return tldap_simple_recv(req);
2121 }
2122
2123 int tldap_add(struct tldap_context *ld, const char *dn,
2124 int num_attributes, struct tldap_mod *attributes,
2125 struct tldap_control *sctrls, int num_sctrls,
2126 struct tldap_control *cctrls, int num_cctrls)
2127 {
2128 TALLOC_CTX *frame = talloc_stackframe();
2129 struct tevent_context *ev;
2130 struct tevent_req *req;
2131 int result;
2132
2133 ev = event_context_init(frame);
2134 if (ev == NULL) {
2135 result = TLDAP_NO_MEMORY;
2136 goto fail;
2137 }
2138
2139 req = tldap_add_send(frame, ev, ld, dn, attributes, num_attributes,
2140 sctrls, num_sctrls, cctrls, num_cctrls);
2141 if (req == NULL) {
2142 result = TLDAP_NO_MEMORY;
2143 goto fail;
2144 }
2145
2146 if (!tevent_req_poll(req, ev)) {
2147 result = TLDAP_OPERATIONS_ERROR;
2148 goto fail;
2149 }
2150
2151 result = tldap_add_recv(req);
2152 tldap_save_msg(ld, req);
2153 fail:
2154 TALLOC_FREE(frame);
2155 return result;
2156 }
2157
2158 static void tldap_modify_done(struct tevent_req *subreq);
2159
2160 struct tevent_req *tldap_modify_send(TALLOC_CTX *mem_ctx,
2161 struct tevent_context *ev,
2162 struct tldap_context *ld,
2163 const char *dn,
2164 int num_mods, struct tldap_mod *mods,
2165 struct tldap_control *sctrls,
2166 int num_sctrls,
2167 struct tldap_control *cctrls,
2168 int num_cctrls)
2169 {
2170 struct tevent_req *req, *subreq;
2171 struct tldap_req_state *state;
2172 int i, j;
2173
2174 req = tldap_req_create(mem_ctx, ld, &state);
2175 if (req == NULL) {
2176 return NULL;
2177 }
2178
2179 asn1_push_tag(state->out, TLDAP_REQ_MODIFY);
2180 asn1_write_OctetString(state->out, dn, strlen(dn));
2181 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
2182
2183 for (i=0; i<num_mods; i++) {
2184 struct tldap_mod *mod = &mods[i];
2185 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
2186 asn1_write_enumerated(state->out, mod->mod_op),
2187 asn1_push_tag(state->out, ASN1_SEQUENCE(0));
2188 asn1_write_OctetString(state->out, mod->attribute,
2189 strlen(mod->attribute));
2190 asn1_push_tag(state->out, ASN1_SET);
2191 for (j=0; j<mod->num_values; j++) {
2192 asn1_write_OctetString(state->out,
2193 mod->values[j].data,
2194 mod->values[j].length);
2195 }
2196 asn1_pop_tag(state->out);
2197 asn1_pop_tag(state->out);
2198 asn1_pop_tag(state->out);
2199 }
2200
2201 asn1_pop_tag(state->out);
2202 asn1_pop_tag(state->out);
2203
2204 subreq = tldap_msg_send(state, ev, ld, state->id, state->out,
2205 sctrls, num_sctrls);
2206 if (tevent_req_nomem(subreq, req)) {
2207 return tevent_req_post(req, ev);
2208 }
2209 tevent_req_set_callback(subreq, tldap_modify_done, req);
2210 return req;
2211 }
2212
2213 static void tldap_modify_done(struct tevent_req *subreq)
2214 {
2215 tldap_simple_done(subreq, TLDAP_RES_MODIFY);
2216 }
2217
2218 int tldap_modify_recv(struct tevent_req *req)
2219 {
2220 return tldap_simple_recv(req);
2221 }
2222
2223 int tldap_modify(struct tldap_context *ld, const char *dn,
2224 int num_mods, struct tldap_mod *mods,
2225 struct tldap_control *sctrls, int num_sctrls,
2226 struct tldap_control *cctrls, int num_cctrls)
2227 {
2228 TALLOC_CTX *frame = talloc_stackframe();
2229 struct tevent_context *ev;
2230 struct tevent_req *req;
2231 int result;
2232
2233 ev = event_context_init(frame);
2234 if (ev == NULL) {
2235 result = TLDAP_NO_MEMORY;
2236 goto fail;
2237 }
2238
2239 req = tldap_modify_send(frame, ev, ld, dn, num_mods, mods,
2240 sctrls, num_sctrls, cctrls, num_cctrls);
2241 if (req == NULL) {
2242 result = TLDAP_NO_MEMORY;
2243 goto fail;
2244 }
2245
2246 if (!tevent_req_poll(req, ev)) {
2247 result = TLDAP_OPERATIONS_ERROR;
2248 goto fail;
2249 }
2250
2251 result = tldap_modify_recv(req);
2252 tldap_save_msg(ld, req);
2253 fail:
2254 TALLOC_FREE(frame);
2255 return result;
2256 }
2257
2258 static void tldap_delete_done(struct tevent_req *subreq);
2259
2260 struct tevent_req *tldap_delete_send(TALLOC_CTX *mem_ctx,
2261 struct tevent_context *ev,
2262 struct tldap_context *ld,
2263 const char *dn,
2264 struct tldap_control *sctrls,
2265 int num_sctrls,
2266 struct tldap_control *cctrls,
2267 int num_cctrls)
2268 {
2269 struct tevent_req *req, *subreq;
2270 struct tldap_req_state *state;
2271
2272 req = tldap_req_create(mem_ctx, ld, &state);
2273 if (req == NULL) {
2274 return NULL;
2275 }
2276
2277 asn1_push_tag(state->out, TLDAP_REQ_DELETE);
2278 asn1_write(state->out, dn, strlen(dn));
2279 asn1_pop_tag(state->out);
2280
2281 subreq = tldap_msg_send(state, ev, ld, state->id, state->out,
2282 sctrls, num_sctrls);
2283 if (tevent_req_nomem(subreq, req)) {
2284 return tevent_req_post(req, ev);
2285 }
2286 tevent_req_set_callback(subreq, tldap_delete_done, req);
2287 return req;
2288 }
2289
2290 static void tldap_delete_done(struct tevent_req *subreq)
2291 {
2292 tldap_simple_done(subreq, TLDAP_RES_DELETE);
2293 }
2294
2295 int tldap_delete_recv(struct tevent_req *req)
2296 {
2297 return tldap_simple_recv(req);
2298 }
2299
2300 int tldap_delete(struct tldap_context *ld, const char *dn,
2301 struct tldap_control *sctrls, int num_sctrls,
2302 struct tldap_control *cctrls, int num_cctrls)
2303 {
2304 TALLOC_CTX *frame = talloc_stackframe();
2305 struct tevent_context *ev;
2306 struct tevent_req *req;
2307 int result;
2308
2309 ev = event_context_init(frame);
2310 if (ev == NULL) {
2311 result = TLDAP_NO_MEMORY;
2312 goto fail;
2313 }
2314
2315 req = tldap_delete_send(frame, ev, ld, dn, sctrls, num_sctrls,
2316 cctrls, num_cctrls);
2317 if (req == NULL) {
2318 result = TLDAP_NO_MEMORY;
2319 goto fail;
2320 }
2321
2322 if (!tevent_req_poll(req, ev)) {
2323 result = TLDAP_OPERATIONS_ERROR;
2324 goto fail;
2325 }
2326
2327 result = tldap_delete_recv(req);
2328 tldap_save_msg(ld, req);
2329 fail:
2330 TALLOC_FREE(frame);
2331 return result;
2332 }
2333
2334 int tldap_msg_id(const struct tldap_message *msg)
2335 {
2336 return msg->id;
2337 }
2338
2339 int tldap_msg_type(const struct tldap_message *msg)
2340 {
2341 return msg->type;
2342 }
2343
2344 const char *tldap_msg_matcheddn(struct tldap_message *msg)
2345 {
2346 if (msg == NULL) {
2347 return NULL;
2348 }
2349 return msg->res_matcheddn;
2350 }
2351
2352 const char *tldap_msg_diagnosticmessage(struct tldap_message *msg)
2353 {
2354 if (msg == NULL) {
2355 return NULL;
2356 }
2357 return msg->res_diagnosticmessage;
2358 }
2359
2360 const char *tldap_msg_referral(struct tldap_message *msg)
2361 {
2362 if (msg == NULL) {
2363 return NULL;
2364 }
2365 return msg->res_referral;
2366 }
2367
2368 void tldap_msg_sctrls(struct tldap_message *msg, int *num_sctrls,
2369 struct tldap_control **sctrls)
2370 {
2371 if (msg == NULL) {
2372 *sctrls = NULL;
2373 *num_sctrls = 0;
2374 }
2375 *sctrls = msg->res_sctrls;
2376 *num_sctrls = talloc_array_length(msg->res_sctrls);
2377 }
2378
2379 struct tldap_message *tldap_ctx_lastmsg(struct tldap_context *ld)
2380 {
2381 return ld->last_msg;
2382 }
2383
2384 const char *tldap_err2string(int rc)
2385 {
2386 const char *res = NULL;
2387
2388 /*
2389 * This would normally be a table, but the error codes are not fully
2390 * sequential. Let the compiler figure out the optimum implementation
2391 * :-)
2392 */
2393
2394 switch (rc) {
2395 case TLDAP_SUCCESS:
2396 res = "TLDAP_SUCCESS";
2397 break;
2398 case TLDAP_OPERATIONS_ERROR:
2399 res = "TLDAP_OPERATIONS_ERROR";
2400 break;
2401 case TLDAP_PROTOCOL_ERROR:
2402 res = "TLDAP_PROTOCOL_ERROR";
2403 break;
2404 case TLDAP_TIMELIMIT_EXCEEDED:
2405 res = "TLDAP_TIMELIMIT_EXCEEDED";
2406 break;
2407 case TLDAP_SIZELIMIT_EXCEEDED:
2408 res = "TLDAP_SIZELIMIT_EXCEEDED";
2409 break;
2410 case TLDAP_COMPARE_FALSE:
2411 res = "TLDAP_COMPARE_FALSE";
2412 break;
2413 case TLDAP_COMPARE_TRUE:
2414 res = "TLDAP_COMPARE_TRUE";
2415 break;
2416 case TLDAP_STRONG_AUTH_NOT_SUPPORTED:
2417 res = "TLDAP_STRONG_AUTH_NOT_SUPPORTED";
2418 break;
2419 case TLDAP_STRONG_AUTH_REQUIRED:
2420 res = "TLDAP_STRONG_AUTH_REQUIRED";
2421 break;
2422 case TLDAP_REFERRAL:
2423 res = "TLDAP_REFERRAL";
2424 break;
2425 case TLDAP_ADMINLIMIT_EXCEEDED:
2426 res = "TLDAP_ADMINLIMIT_EXCEEDED";
2427 break;
2428 case TLDAP_UNAVAILABLE_CRITICAL_EXTENSION:
2429 res = "TLDAP_UNAVAILABLE_CRITICAL_EXTENSION";
2430 break;
2431 case TLDAP_CONFIDENTIALITY_REQUIRED:
2432 res = "TLDAP_CONFIDENTIALITY_REQUIRED";
2433 break;
2434 case TLDAP_SASL_BIND_IN_PROGRESS:
2435 res = "TLDAP_SASL_BIND_IN_PROGRESS";
2436 break;
2437 case TLDAP_NO_SUCH_ATTRIBUTE:
2438 res = "TLDAP_NO_SUCH_ATTRIBUTE";
2439 break;
2440 case TLDAP_UNDEFINED_TYPE:
2441 res = "TLDAP_UNDEFINED_TYPE";
2442 break;
2443 case TLDAP_INAPPROPRIATE_MATCHING:
2444 res = "TLDAP_INAPPROPRIATE_MATCHING";
2445 break;
2446 case TLDAP_CONSTRAINT_VIOLATION:
2447 res = "TLDAP_CONSTRAINT_VIOLATION";
2448 break;
2449 case TLDAP_TYPE_OR_VALUE_EXISTS:
2450 res = "TLDAP_TYPE_OR_VALUE_EXISTS";
2451 break;
2452 case TLDAP_INVALID_SYNTAX:
2453 res = "TLDAP_INVALID_SYNTAX";
2454 break;
2455 case TLDAP_NO_SUCH_OBJECT:
2456 res = "TLDAP_NO_SUCH_OBJECT";
2457 break;
2458 case TLDAP_ALIAS_PROBLEM:
2459 res = "TLDAP_ALIAS_PROBLEM";
2460 break;
2461 case TLDAP_INVALID_DN_SYNTAX:
2462 res = "TLDAP_INVALID_DN_SYNTAX";
2463 break;
2464 case TLDAP_IS_LEAF:
2465 res = "TLDAP_IS_LEAF";
2466 break;
2467 case TLDAP_ALIAS_DEREF_PROBLEM:
2468 res = "TLDAP_ALIAS_DEREF_PROBLEM";
2469 break;
2470 case TLDAP_INAPPROPRIATE_AUTH:
2471 res = "TLDAP_INAPPROPRIATE_AUTH";
2472 break;
2473 case TLDAP_INVALID_CREDENTIALS:
2474 res = "TLDAP_INVALID_CREDENTIALS";
2475 break;
2476 case TLDAP_INSUFFICIENT_ACCESS:
2477 res = "TLDAP_INSUFFICIENT_ACCESS";
2478 break;
2479 case TLDAP_BUSY:
2480 res = "TLDAP_BUSY";
2481 break;
2482 case TLDAP_UNAVAILABLE:
2483 res = "TLDAP_UNAVAILABLE";
2484 break;
2485 case TLDAP_UNWILLING_TO_PERFORM:
2486 res = "TLDAP_UNWILLING_TO_PERFORM";
2487 break;
2488 case TLDAP_LOOP_DETECT:
2489 res = "TLDAP_LOOP_DETECT";
2490 break;
2491 case TLDAP_NAMING_VIOLATION:
2492 res = "TLDAP_NAMING_VIOLATION";
2493 break;
2494 case TLDAP_OBJECT_CLASS_VIOLATION:
2495 res = "TLDAP_OBJECT_CLASS_VIOLATION";
2496 break;
2497 case TLDAP_NOT_ALLOWED_ON_NONLEAF:
2498 res = "TLDAP_NOT_ALLOWED_ON_NONLEAF";
2499 break;
2500 case TLDAP_NOT_ALLOWED_ON_RDN:
2501 res = "TLDAP_NOT_ALLOWED_ON_RDN";
2502 break;
2503 case TLDAP_ALREADY_EXISTS:
2504 res = "TLDAP_ALREADY_EXISTS";
2505 break;
2506 case TLDAP_NO_OBJECT_CLASS_MODS:
2507 res = "TLDAP_NO_OBJECT_CLASS_MODS";
2508 break;
2509 case TLDAP_RESULTS_TOO_LARGE:
2510 res = "TLDAP_RESULTS_TOO_LARGE";
2511 break;
2512 case TLDAP_AFFECTS_MULTIPLE_DSAS:
2513 res = "TLDAP_AFFECTS_MULTIPLE_DSAS";
2514 break;
2515 case TLDAP_OTHER:
2516 res = "TLDAP_OTHER";
2517 break;
2518 case TLDAP_SERVER_DOWN:
2519 res = "TLDAP_SERVER_DOWN";
2520 break;
2521 case TLDAP_LOCAL_ERROR:
2522 res = "TLDAP_LOCAL_ERROR";
2523 break;
2524 case TLDAP_ENCODING_ERROR:
2525 res = "TLDAP_ENCODING_ERROR";
2526 break;
2527 case TLDAP_DECODING_ERROR:
2528 res = "TLDAP_DECODING_ERROR";
2529 break;
2530 case TLDAP_TIMEOUT:
2531 res = "TLDAP_TIMEOUT";
2532 break;
2533 case TLDAP_AUTH_UNKNOWN:
2534 res = "TLDAP_AUTH_UNKNOWN";
2535 break;
2536 case TLDAP_FILTER_ERROR:
2537 res = "TLDAP_FILTER_ERROR";
2538 break;
2539 case TLDAP_USER_CANCELLED:
2540 res = "TLDAP_USER_CANCELLED";
2541 break;
2542 case TLDAP_PARAM_ERROR:
2543 res = "TLDAP_PARAM_ERROR";
2544 break;
2545 case TLDAP_NO_MEMORY:
2546 res = "TLDAP_NO_MEMORY";
2547 break;
2548 case TLDAP_CONNECT_ERROR:
2549 res = "TLDAP_CONNECT_ERROR";
2550 break;
2551 case TLDAP_NOT_SUPPORTED:
2552 res = "TLDAP_NOT_SUPPORTED";
2553 break;
2554 case TLDAP_CONTROL_NOT_FOUND:
2555 res = "TLDAP_CONTROL_NOT_FOUND";
2556 break;
2557 case TLDAP_NO_RESULTS_RETURNED:
2558 res = "TLDAP_NO_RESULTS_RETURNED";
2559 break;
2560 case TLDAP_MORE_RESULTS_TO_RETURN:
2561 res = "TLDAP_MORE_RESULTS_TO_RETURN";
2562 break;
2563 case TLDAP_CLIENT_LOOP:
2564 res = "TLDAP_CLIENT_LOOP";
2565 break;
2566 case TLDAP_REFERRAL_LIMIT_EXCEEDED:
2567 res = "TLDAP_REFERRAL_LIMIT_EXCEEDED";
2568 break;
2569 default:
2570 res = talloc_asprintf(talloc_tos(), "Unknown LDAP Error (%d)",
2571 rc);
2572 break;
2573 }
2574 if (res == NULL) {
2575 res = "Unknown LDAP Error";
2576 }
2577 return res;
2578 }