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s3-libnet-samsync: pass back sequence number from fetch_sam_entries_keytab.
[Samba.git] / source / rpc_server / srv_eventlog_nt.c
blob89a8ebcb50ad13f767faf22fc78336731d0b167b
1 /*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Marcin Krzysztof Porwit 2005,
5 * Copyright (C) Brian Moran 2005,
6 * Copyright (C) Gerald (Jerry) Carter 2005.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23
24 #undef DBGC_CLASS
25 #define DBGC_CLASS DBGC_RPC_SRV
26
27 typedef struct {
28 char *logname;
29 ELOG_TDB *etdb;
30 uint32 current_record;
31 uint32 num_records;
32 uint32 oldest_entry;
33 uint32 flags;
34 uint32 access_granted;
35 } EVENTLOG_INFO;
36
37 /********************************************************************
38 ********************************************************************/
39
40 static void free_eventlog_info( void *ptr )
41 {
42 EVENTLOG_INFO *elog = (EVENTLOG_INFO *)ptr;
43
44 if ( elog->etdb )
45 elog_close_tdb( elog->etdb, False );
46
47 TALLOC_FREE( elog );
48 }
49
50 /********************************************************************
51 ********************************************************************/
52
53 static EVENTLOG_INFO *find_eventlog_info_by_hnd( pipes_struct * p,
54 POLICY_HND * handle )
55 {
56 EVENTLOG_INFO *info;
57
58 if ( !find_policy_by_hnd( p, handle, (void **)(void *)&info ) ) {
59 DEBUG( 2,
60 ( "find_eventlog_info_by_hnd: eventlog not found.\n" ) );
61 return NULL;
62 }
63
64 return info;
65 }
66
67 /********************************************************************
68 ********************************************************************/
69
70 static bool elog_check_access( EVENTLOG_INFO *info, NT_USER_TOKEN *token )
71 {
72 char *tdbname = elog_tdbname(talloc_tos(), info->logname );
73 SEC_DESC *sec_desc;
74 NTSTATUS status;
75
76 if ( !tdbname )
77 return False;
78
79 /* get the security descriptor for the file */
80
81 sec_desc = get_nt_acl_no_snum( info, tdbname );
82 TALLOC_FREE( tdbname );
83
84 if ( !sec_desc ) {
85 DEBUG(5,("elog_check_access: Unable to get NT ACL for %s\n",
86 tdbname));
87 return False;
88 }
89
90 /* root free pass */
91
92 if ( geteuid() == sec_initial_uid() ) {
93 DEBUG(5,("elog_check_access: using root's token\n"));
94 token = get_root_nt_token();
95 }
96
97 /* run the check, try for the max allowed */
98
99 status = se_access_check( sec_desc, token, MAXIMUM_ALLOWED_ACCESS,
100 &info->access_granted);
101
102 if ( sec_desc )
103 TALLOC_FREE( sec_desc );
104
105 if (!NT_STATUS_IS_OK(status)) {
106 DEBUG(8,("elog_check_access: se_access_check() return %s\n",
107 nt_errstr(status)));
108 return False;
109 }
110
111 /* we have to have READ permission for a successful open */
112
113 return ( info->access_granted & SA_RIGHT_FILE_READ_DATA );
114 }
115
116 /********************************************************************
117 ********************************************************************/
118
119 static bool elog_validate_logname( const char *name )
120 {
121 int i;
122 const char **elogs = lp_eventlog_list();
123
124 if (!elogs) {
125 return False;
126 }
127
128 for ( i=0; elogs[i]; i++ ) {
129 if ( strequal( name, elogs[i] ) )
130 return True;
131 }
132
133 return False;
134 }
135
136 /********************************************************************
137 ********************************************************************/
138
139 static bool get_num_records_hook( EVENTLOG_INFO * info )
140 {
141 int next_record;
142 int oldest_record;
143
144 if ( !info->etdb ) {
145 DEBUG( 10, ( "No open tdb for %s\n", info->logname ) );
146 return False;
147 }
148
149 /* lock the tdb since we have to get 2 records */
150
151 tdb_lock_bystring_with_timeout( ELOG_TDB_CTX(info->etdb), EVT_NEXT_RECORD, 1 );
152 next_record = tdb_fetch_int32( ELOG_TDB_CTX(info->etdb), EVT_NEXT_RECORD);
153 oldest_record = tdb_fetch_int32( ELOG_TDB_CTX(info->etdb), EVT_OLDEST_ENTRY);
154 tdb_unlock_bystring( ELOG_TDB_CTX(info->etdb), EVT_NEXT_RECORD);
155
156 DEBUG( 8,
157 ( "Oldest Record %d; Next Record %d\n", oldest_record,
158 next_record ) );
159
160 info->num_records = ( next_record - oldest_record );
161 info->oldest_entry = oldest_record;
162
163 return True;
164 }
165
166 /********************************************************************
167 ********************************************************************/
168
169 static bool get_oldest_entry_hook( EVENTLOG_INFO * info )
170 {
171 /* it's the same thing */
172 return get_num_records_hook( info );
173 }
174
175 /********************************************************************
176 ********************************************************************/
177
178 static NTSTATUS elog_open( pipes_struct * p, const char *logname, POLICY_HND *hnd )
179 {
180 EVENTLOG_INFO *elog;
181
182 /* first thing is to validate the eventlog name */
183
184 if ( !elog_validate_logname( logname ) )
185 return NT_STATUS_OBJECT_PATH_INVALID;
186
187 if ( !(elog = TALLOC_ZERO_P( NULL, EVENTLOG_INFO )) )
188 return NT_STATUS_NO_MEMORY;
189
190 elog->logname = talloc_strdup( elog, logname );
191
192 /* Open the tdb first (so that we can create any new tdbs if necessary).
193 We have to do this as root and then use an internal access check
194 on the file permissions since you can only have a tdb open once
195 in a single process */
196
197 become_root();
198 elog->etdb = elog_open_tdb( elog->logname, False );
199 unbecome_root();
200
201 if ( !elog->etdb ) {
202 /* according to MSDN, if the logfile cannot be found, we should
203 default to the "Application" log */
204
205 if ( !strequal( logname, ELOG_APPL ) ) {
206
207 TALLOC_FREE( elog->logname );
208
209 elog->logname = talloc_strdup( elog, ELOG_APPL );
210
211 /* do the access check */
212 if ( !elog_check_access( elog, p->pipe_user.nt_user_token ) ) {
213 TALLOC_FREE( elog );
214 return NT_STATUS_ACCESS_DENIED;
215 }
216
217 become_root();
218 elog->etdb = elog_open_tdb( elog->logname, False );
219 unbecome_root();
220 }
221
222 if ( !elog->etdb ) {
223 TALLOC_FREE( elog );
224 return NT_STATUS_ACCESS_DENIED; /* ??? */
225 }
226 }
227
228 /* now do the access check. Close the tdb if we fail here */
229
230 if ( !elog_check_access( elog, p->pipe_user.nt_user_token ) ) {
231 elog_close_tdb( elog->etdb, False );
232 TALLOC_FREE( elog );
233 return NT_STATUS_ACCESS_DENIED;
234 }
235
236 /* create the policy handle */
237
238 if ( !create_policy_hnd
239 ( p, hnd, free_eventlog_info, ( void * ) elog ) ) {
240 free_eventlog_info( elog );
241 return NT_STATUS_NO_MEMORY;
242 }
243
244 /* set the initial current_record pointer */
245
246 if ( !get_oldest_entry_hook( elog ) ) {
247 DEBUG(3,("elog_open: Successfully opened eventlog but can't "
248 "get any information on internal records!\n"));
249 }
250
251 elog->current_record = elog->oldest_entry;
252
253 return NT_STATUS_OK;
254 }
255
256 /********************************************************************
257 ********************************************************************/
258
259 static NTSTATUS elog_close( pipes_struct *p, POLICY_HND *hnd )
260 {
261 if ( !( close_policy_hnd( p, hnd ) ) ) {
262 return NT_STATUS_INVALID_HANDLE;
263 }
264
265 return NT_STATUS_OK;
266 }
267
268 /*******************************************************************
269 *******************************************************************/
270
271 static int elog_size( EVENTLOG_INFO *info )
272 {
273 if ( !info || !info->etdb ) {
274 DEBUG(0,("elog_size: Invalid info* structure!\n"));
275 return 0;
276 }
277
278 return elog_tdb_size( ELOG_TDB_CTX(info->etdb), NULL, NULL );
279 }
280
281 /********************************************************************
282 For the given tdb, get the next eventlog record into the passed
283 Eventlog_entry. returns NULL if it can't get the record for some reason.
284 ********************************************************************/
285
286 static Eventlog_entry *get_eventlog_record(prs_struct *ps,
287 TDB_CONTEXT *tdb,
288 int recno)
289 {
290 Eventlog_entry *ee = NULL;
291 TDB_DATA ret, key;
292
293 int srecno;
294 int reclen;
295 int len;
296
297 char *wpsource = NULL;
298 char *wpcomputer = NULL;
299 char *wpsid = NULL;
300 char *wpstrs = NULL;
301 char *puserdata = NULL;
302
303 key.dsize = sizeof(int32);
304
305 srecno = recno;
306 key.dptr = ( uint8 * ) &srecno;
307
308 ret = tdb_fetch( tdb, key );
309
310 if ( ret.dsize == 0 ) {
311 DEBUG( 8,
312 ( "Can't find a record for the key, record %d\n",
313 recno ) );
314 return NULL;
315 }
316
317 len = tdb_unpack( ret.dptr, ret.dsize, "d", &reclen );
318
319 DEBUG( 10, ( "Unpacking record %d, size is %d\n", srecno, len ) );
320
321 if ( !len )
322 return NULL;
323
324 ee = TALLOC_ARRAY(ps->mem_ctx, Eventlog_entry, 1);
325 if (!ee) {
326 return NULL;
327 }
328 ZERO_STRUCTP(ee);
329
330 len = tdb_unpack( ret.dptr, ret.dsize, "ddddddwwwwddddddBBdBBBd",
331 &ee->record.length, &ee->record.reserved1,
332 &ee->record.record_number,
333 &ee->record.time_generated,
334 &ee->record.time_written, &ee->record.event_id,
335 &ee->record.event_type, &ee->record.num_strings,
336 &ee->record.event_category, &ee->record.reserved2,
337 &ee->record.closing_record_number,
338 &ee->record.string_offset,
339 &ee->record.user_sid_length,
340 &ee->record.user_sid_offset,
341 &ee->record.data_length, &ee->record.data_offset,
342 &ee->data_record.source_name_len, &wpsource,
343 &ee->data_record.computer_name_len, &wpcomputer,
344 &ee->data_record.sid_padding,
345 &ee->record.user_sid_length, &wpsid,
346 &ee->data_record.strings_len, &wpstrs,
347 &ee->data_record.user_data_len, &puserdata,
348 &ee->data_record.data_padding );
349 DEBUG( 10,
350 ( "Read record %d, len in tdb was %d\n",
351 ee->record.record_number, len ) );
352
353 /* have to do the following because the tdb_unpack allocs a buff, stuffs a pointer to the buff
354 into it's 2nd argment for 'B' */
355
356 if (wpcomputer) {
357 ee->data_record.computer_name = (smb_ucs2_t *)TALLOC_MEMDUP(
358 ee, wpcomputer, ee->data_record.computer_name_len);
359 if (!ee->data_record.computer_name) {
360 TALLOC_FREE(ee);
361 goto out;
362 }
363 }
364 if (wpsource) {
365 ee->data_record.source_name = (smb_ucs2_t *)TALLOC_MEMDUP(
366 ee, wpsource, ee->data_record.source_name_len);
367 if (!ee->data_record.source_name) {
368 TALLOC_FREE(ee);
369 goto out;
370 }
371 }
372
373 if (wpsid) {
374 ee->data_record.sid = (smb_ucs2_t *)TALLOC_MEMDUP(
375 ee, wpsid, ee->record.user_sid_length);
376 if (!ee->data_record.sid) {
377 TALLOC_FREE(ee);
378 goto out;
379 }
380 }
381 if (wpstrs) {
382 ee->data_record.strings = (smb_ucs2_t *)TALLOC_MEMDUP(
383 ee, wpstrs, ee->data_record.strings_len);
384 if (!ee->data_record.strings) {
385 TALLOC_FREE(ee);
386 goto out;
387 }
388 }
389
390 if (puserdata) {
391 ee->data_record.user_data = (char *)TALLOC_MEMDUP(
392 ee, puserdata, ee->data_record.user_data_len);
393 if (!ee->data_record.user_data) {
394 TALLOC_FREE(ee);
395 goto out;
396 }
397 }
398
399 out:
400
401 SAFE_FREE(wpcomputer);
402 SAFE_FREE(wpsource);
403 SAFE_FREE(wpsid);
404 SAFE_FREE(wpstrs);
405 SAFE_FREE(puserdata);
406
407 DEBUG( 10, ( "get_eventlog_record: read back %d\n", len ) );
408 DEBUG( 10,
409 ( "get_eventlog_record: computer_name %d is ",
410 ee->data_record.computer_name_len ) );
411 SAFE_FREE(ret.dptr);
412 return ee;
413 }
414
415 /********************************************************************
416 note that this can only be called AFTER the table is constructed,
417 since it uses the table to find the tdb handle
418 ********************************************************************/
419
420 static bool sync_eventlog_params( EVENTLOG_INFO *info )
421 {
422 char *path = NULL;
423 uint32 uiMaxSize;
424 uint32 uiRetention;
425 struct registry_key *key;
426 struct registry_value *value;
427 WERROR wresult;
428 char *elogname = info->logname;
429 TALLOC_CTX *ctx = talloc_tos();
430 bool ret = false;
431
432 DEBUG( 4, ( "sync_eventlog_params with %s\n", elogname ) );
433
434 if ( !info->etdb ) {
435 DEBUG( 4, ( "No open tdb! (%s)\n", info->logname ) );
436 return False;
437 }
438 /* set resonable defaults. 512Kb on size and 1 week on time */
439
440 uiMaxSize = 0x80000;
441 uiRetention = 604800;
442
443 /* the general idea is to internally open the registry
444 key and retrieve the values. That way we can continue
445 to use the same fetch/store api that we use in
446 srv_reg_nt.c */
447
448 path = talloc_asprintf(ctx, "%s/%s", KEY_EVENTLOG, elogname );
449 if (!path) {
450 return false;
451 }
452
453 wresult = reg_open_path(ctx, path, REG_KEY_READ, get_root_nt_token(),
454 &key);
455
456 if ( !W_ERROR_IS_OK( wresult ) ) {
457 DEBUG( 4,
458 ( "sync_eventlog_params: Failed to open key [%s] (%s)\n",
459 path, dos_errstr( wresult ) ) );
460 return false;
461 }
462
463 wresult = reg_queryvalue(key, key, "Retention", &value);
464 if (!W_ERROR_IS_OK(wresult)) {
465 DEBUG(4, ("Failed to query value \"Retention\": %s\n",
466 dos_errstr(wresult)));
467 ret = false;
468 goto done;
469 }
470 uiRetention = value->v.dword;
471
472 wresult = reg_queryvalue(key, key, "MaxSize", &value);
473 if (!W_ERROR_IS_OK(wresult)) {
474 DEBUG(4, ("Failed to query value \"MaxSize\": %s\n",
475 dos_errstr(wresult)));
476 ret = false;
477 goto done;
478 }
479 uiMaxSize = value->v.dword;
480
481 tdb_store_int32( ELOG_TDB_CTX(info->etdb), EVT_MAXSIZE, uiMaxSize );
482 tdb_store_int32( ELOG_TDB_CTX(info->etdb), EVT_RETENTION, uiRetention );
483
484 ret = true;
485
486 done:
487 TALLOC_FREE(ctx);
488 return ret;
489 }
490
491 /********************************************************************
492 ********************************************************************/
493
494 static Eventlog_entry *read_package_entry( prs_struct * ps,
495 Eventlog_entry * entry )
496 {
497 uint8 *offset;
498 Eventlog_entry *ee_new = NULL;
499
500 ee_new = PRS_ALLOC_MEM( ps, Eventlog_entry, 1 );
501 if ( ee_new == NULL ) {
502 return NULL;
503 }
504
505 entry->data_record.sid_padding =
506 ( ( 4 -
507 ( ( entry->data_record.source_name_len +
508 entry->data_record.computer_name_len ) % 4 ) ) % 4 );
509 entry->data_record.data_padding =
510 ( 4 -
511 ( ( entry->data_record.strings_len +
512 entry->data_record.user_data_len ) % 4 ) ) % 4;
513 entry->record.length = sizeof( Eventlog_record );
514 entry->record.length += entry->data_record.source_name_len;
515 entry->record.length += entry->data_record.computer_name_len;
516 if ( entry->record.user_sid_length == 0 ) {
517 /* Should not pad to a DWORD boundary for writing out the sid if there is
518 no SID, so just propagate the padding to pad the data */
519 entry->data_record.data_padding +=
520 entry->data_record.sid_padding;
521 entry->data_record.sid_padding = 0;
522 }
523 DEBUG( 10,
524 ( "sid_padding is [%d].\n", entry->data_record.sid_padding ) );
525 DEBUG( 10,
526 ( "data_padding is [%d].\n",
527 entry->data_record.data_padding ) );
528
529 entry->record.length += entry->data_record.sid_padding;
530 entry->record.length += entry->record.user_sid_length;
531 entry->record.length += entry->data_record.strings_len;
532 entry->record.length += entry->data_record.user_data_len;
533 entry->record.length += entry->data_record.data_padding;
534 /* need another copy of length at the end of the data */
535 entry->record.length += sizeof( entry->record.length );
536 DEBUG( 10,
537 ( "entry->record.length is [%d].\n", entry->record.length ) );
538 entry->data =
539 PRS_ALLOC_MEM( ps, uint8,
540 entry->record.length -
541 sizeof( Eventlog_record ) -
542 sizeof( entry->record.length ) );
543 if ( entry->data == NULL ) {
544 return NULL;
545 }
546 offset = entry->data;
547 memcpy( offset, &( entry->data_record.source_name ),
548 entry->data_record.source_name_len );
549 offset += entry->data_record.source_name_len;
550 memcpy( offset, &( entry->data_record.computer_name ),
551 entry->data_record.computer_name_len );
552 offset += entry->data_record.computer_name_len;
553 /* SID needs to be DWORD-aligned */
554 offset += entry->data_record.sid_padding;
555 entry->record.user_sid_offset =
556 sizeof( Eventlog_record ) + ( offset - entry->data );
557 memcpy( offset, &( entry->data_record.sid ),
558 entry->record.user_sid_length );
559 offset += entry->record.user_sid_length;
560 /* Now do the strings */
561 entry->record.string_offset =
562 sizeof( Eventlog_record ) + ( offset - entry->data );
563 memcpy( offset, &( entry->data_record.strings ),
564 entry->data_record.strings_len );
565 offset += entry->data_record.strings_len;
566 /* Now do the data */
567 entry->record.data_length = entry->data_record.user_data_len;
568 entry->record.data_offset =
569 sizeof( Eventlog_record ) + ( offset - entry->data );
570 memcpy( offset, &( entry->data_record.user_data ),
571 entry->data_record.user_data_len );
572 offset += entry->data_record.user_data_len;
573
574 memcpy( &( ee_new->record ), &entry->record,
575 sizeof( Eventlog_record ) );
576 memcpy( &( ee_new->data_record ), &entry->data_record,
577 sizeof( Eventlog_data_record ) );
578 ee_new->data = entry->data;
579
580 return ee_new;
581 }
582
583 /********************************************************************
584 ********************************************************************/
585
586 static bool add_record_to_resp( EVENTLOG_R_READ_EVENTLOG * r_u,
587 Eventlog_entry * ee_new )
588 {
589 Eventlog_entry *insert_point;
590
591 insert_point = r_u->entry;
592
593 if ( NULL == insert_point ) {
594 r_u->entry = ee_new;
595 ee_new->next = NULL;
596 } else {
597 while ( ( NULL != insert_point->next ) ) {
598 insert_point = insert_point->next;
599 }
600 ee_new->next = NULL;
601 insert_point->next = ee_new;
602 }
603 r_u->num_records++;
604 r_u->num_bytes_in_resp += ee_new->record.length;
605
606 return True;
607 }
608
609 /********************************************************************
610 _eventlog_OpenEventLogW
611 ********************************************************************/
612
613 NTSTATUS _eventlog_OpenEventLogW(pipes_struct *p,
614 struct eventlog_OpenEventLogW *r)
615 {
616 const char *servername = "";
617 const char *logname = "";
618 EVENTLOG_INFO *info;
619 NTSTATUS result;
620
621 if (r->in.servername->string) {
622 servername = r->in.servername->string;
623 }
624
625 if (r->in.logname->string) {
626 logname = r->in.logname->string;
627 }
628
629 DEBUG( 10,("_eventlog_open_eventlog: Server [%s], Log [%s]\n",
630 servername, logname ));
631
632 /* according to MSDN, if the logfile cannot be found, we should
633 default to the "Application" log */
634
635 if ( !NT_STATUS_IS_OK( result = elog_open( p, logname, r->out.handle )) )
636 return result;
637
638 if ( !(info = find_eventlog_info_by_hnd( p, r->out.handle )) ) {
639 DEBUG(0,("_eventlog_open_eventlog: eventlog (%s) opened but unable to find handle!\n",
640 logname ));
641 elog_close( p, r->out.handle );
642 return NT_STATUS_INVALID_HANDLE;
643 }
644
645 DEBUG(10,("_eventlog_open_eventlog: Size [%d]\n", elog_size( info )));
646
647 sync_eventlog_params( info );
648 prune_eventlog( ELOG_TDB_CTX(info->etdb) );
649
650 return NT_STATUS_OK;
651 }
652
653 /********************************************************************
654 _eventlog_ClearEventLogW
655 This call still needs some work
656 ********************************************************************/
657 /** The windows client seems to be doing something funny with the file name
658 A call like
659 ClearEventLog(handle, "backup_file")
660 on the client side will result in the backup file name looking like this on the
661 server side:
662 \??\${CWD of client}\backup_file
663 If an absolute path gets specified, such as
664 ClearEventLog(handle, "C:\\temp\\backup_file")
665 then it is still mangled by the client into this:
666 \??\C:\temp\backup_file
667 when it is on the wire.
668 I'm not sure where the \?? is coming from, or why the ${CWD} of the client process
669 would be added in given that the backup file gets written on the server side. */
670
671 NTSTATUS _eventlog_ClearEventLogW(pipes_struct *p,
672 struct eventlog_ClearEventLogW *r)
673 {
674 EVENTLOG_INFO *info = find_eventlog_info_by_hnd( p, r->in.handle );
675 const char *backup_file_name = NULL;
676
677 if ( !info )
678 return NT_STATUS_INVALID_HANDLE;
679
680 if (r->in.backupfile && r->in.backupfile->string) {
681
682 backup_file_name = r->in.backupfile->string;
683
684 DEBUG(8,( "_eventlog_clear_eventlog: Using [%s] as the backup "
685 "file name for log [%s].",
686 backup_file_name, info->logname ) );
687 }
688
689 /* check for WRITE access to the file */
690
691 if ( !(info->access_granted&SA_RIGHT_FILE_WRITE_DATA) )
692 return NT_STATUS_ACCESS_DENIED;
693
694 /* Force a close and reopen */
695
696 elog_close_tdb( info->etdb, True );
697 become_root();
698 info->etdb = elog_open_tdb( info->logname, True );
699 unbecome_root();
700
701 if ( !info->etdb )
702 return NT_STATUS_ACCESS_DENIED;
703
704 return NT_STATUS_OK;
705 }
706
707 /********************************************************************
708 ********************************************************************/
709
710 NTSTATUS _eventlog_CloseEventLog( pipes_struct * p, struct eventlog_CloseEventLog *r )
711 {
712 return elog_close( p, r->in.handle );
713 }
714
715 /********************************************************************
716 ********************************************************************/
717
718 NTSTATUS _eventlog_read_eventlog( pipes_struct * p,
719 EVENTLOG_Q_READ_EVENTLOG * q_u,
720 EVENTLOG_R_READ_EVENTLOG * r_u )
721 {
722 EVENTLOG_INFO *info = find_eventlog_info_by_hnd( p, &q_u->handle );
723 Eventlog_entry *entry = NULL, *ee_new = NULL;
724 uint32 num_records_read = 0;
725 prs_struct *ps;
726 int bytes_left, record_number;
727 uint32 elog_read_type, elog_read_dir;
728
729 if (info == NULL) {
730 return NT_STATUS_INVALID_HANDLE;
731 }
732
733 info->flags = q_u->flags;
734 ps = &p->out_data.rdata;
735
736 bytes_left = q_u->max_read_size;
737
738 if ( !info->etdb )
739 return NT_STATUS_ACCESS_DENIED;
740
741 /* check for valid flags. Can't use the sequential and seek flags together */
742
743 elog_read_type = q_u->flags & (EVENTLOG_SEQUENTIAL_READ|EVENTLOG_SEEK_READ);
744 elog_read_dir = q_u->flags & (EVENTLOG_FORWARDS_READ|EVENTLOG_BACKWARDS_READ);
745
746 if ( elog_read_type == (EVENTLOG_SEQUENTIAL_READ|EVENTLOG_SEEK_READ)
747 || elog_read_dir == (EVENTLOG_FORWARDS_READ|EVENTLOG_BACKWARDS_READ) )
748 {
749 DEBUG(3,("_eventlog_read_eventlog: Invalid flags [0x%x] for ReadEventLog\n", q_u->flags));
750 return NT_STATUS_INVALID_PARAMETER;
751 }
752
753 /* a sequential read should ignore the offset */
754
755 if ( elog_read_type & EVENTLOG_SEQUENTIAL_READ )
756 record_number = info->current_record;
757 else
758 record_number = q_u->offset;
759
760 while ( bytes_left > 0 ) {
761
762 /* assume that when the record fetch fails, that we are done */
763
764 entry = get_eventlog_record (ps, ELOG_TDB_CTX(info->etdb), record_number);
765 if (!entry) {
766 break;
767 }
768
769 DEBUG( 8, ( "Retrieved record %d\n", record_number ) );
770
771 /* Now see if there is enough room to add */
772
773 if ( !(ee_new = read_package_entry( ps, entry )) )
774 return NT_STATUS_NO_MEMORY;
775
776 if ( r_u->num_bytes_in_resp + ee_new->record.length > q_u->max_read_size ) {
777 r_u->bytes_in_next_record = ee_new->record.length;
778
779 /* response would be too big to fit in client-size buffer */
780
781 bytes_left = 0;
782 break;
783 }
784
785 add_record_to_resp( r_u, ee_new );
786 bytes_left -= ee_new->record.length;
787 TALLOC_FREE(entry);
788 num_records_read = r_u->num_records - num_records_read;
789
790 DEBUG( 10, ( "_eventlog_read_eventlog: read [%d] records for a total "
791 "of [%d] records using [%d] bytes out of a max of [%d].\n",
792 num_records_read, r_u->num_records,
793 r_u->num_bytes_in_resp,
794 q_u->max_read_size ) );
795
796 if ( info->flags & EVENTLOG_FORWARDS_READ )
797 record_number++;
798 else
799 record_number--;
800
801 /* update the eventlog record pointer */
802
803 info->current_record = record_number;
804 }
805
806 /* crazy by WinXP uses NT_STATUS_BUFFER_TOO_SMALL to
807 say when there are no more records */
808
809 return (num_records_read ? NT_STATUS_OK : NT_STATUS_BUFFER_TOO_SMALL);
810 }
811
812 /********************************************************************
813 _eventlog_GetOldestRecord
814 ********************************************************************/
815
816 NTSTATUS _eventlog_GetOldestRecord(pipes_struct *p,
817 struct eventlog_GetOldestRecord *r)
818 {
819 EVENTLOG_INFO *info = find_eventlog_info_by_hnd( p, r->in.handle );
820
821 if (info == NULL) {
822 return NT_STATUS_INVALID_HANDLE;
823 }
824
825 if ( !( get_oldest_entry_hook( info ) ) )
826 return NT_STATUS_ACCESS_DENIED;
827
828 *r->out.oldest_entry = info->oldest_entry;
829
830 return NT_STATUS_OK;
831 }
832
833 /********************************************************************
834 _eventlog_GetNumRecords
835 ********************************************************************/
836
837 NTSTATUS _eventlog_GetNumRecords(pipes_struct *p,
838 struct eventlog_GetNumRecords *r)
839 {
840 EVENTLOG_INFO *info = find_eventlog_info_by_hnd( p, r->in.handle );
841
842 if (info == NULL) {
843 return NT_STATUS_INVALID_HANDLE;
844 }
845
846 if ( !( get_num_records_hook( info ) ) )
847 return NT_STATUS_ACCESS_DENIED;
848
849 *r->out.number = info->num_records;
850
851 return NT_STATUS_OK;
852 }
853
854 NTSTATUS _eventlog_BackupEventLogW(pipes_struct *p, struct eventlog_BackupEventLogW *r)
855 {
856 p->rng_fault_state = True;
857 return NT_STATUS_NOT_IMPLEMENTED;
858 }
859
860 NTSTATUS _eventlog_DeregisterEventSource(pipes_struct *p, struct eventlog_DeregisterEventSource *r)
861 {
862 p->rng_fault_state = True;
863 return NT_STATUS_NOT_IMPLEMENTED;
864 }
865
866 NTSTATUS _eventlog_ChangeNotify(pipes_struct *p, struct eventlog_ChangeNotify *r)
867 {
868 p->rng_fault_state = True;
869 return NT_STATUS_NOT_IMPLEMENTED;
870 }
871
872 NTSTATUS _eventlog_RegisterEventSourceW(pipes_struct *p, struct eventlog_RegisterEventSourceW *r)
873 {
874 p->rng_fault_state = True;
875 return NT_STATUS_NOT_IMPLEMENTED;
876 }
877
878 NTSTATUS _eventlog_OpenBackupEventLogW(pipes_struct *p, struct eventlog_OpenBackupEventLogW *r)
879 {
880 p->rng_fault_state = True;
881 return NT_STATUS_NOT_IMPLEMENTED;
882 }
883
884 NTSTATUS _eventlog_ReadEventLogW(pipes_struct *p, struct eventlog_ReadEventLogW *r)
885 {
886 p->rng_fault_state = True;
887 return NT_STATUS_NOT_IMPLEMENTED;
888 }
889
890 NTSTATUS _eventlog_ReportEventW(pipes_struct *p, struct eventlog_ReportEventW *r)
891 {
892 p->rng_fault_state = True;
893 return NT_STATUS_NOT_IMPLEMENTED;
894 }
895
896 NTSTATUS _eventlog_ClearEventLogA(pipes_struct *p, struct eventlog_ClearEventLogA *r)
897 {
898 p->rng_fault_state = True;
899 return NT_STATUS_NOT_IMPLEMENTED;
900 }
901
902 NTSTATUS _eventlog_BackupEventLogA(pipes_struct *p, struct eventlog_BackupEventLogA *r)
903 {
904 p->rng_fault_state = True;
905 return NT_STATUS_NOT_IMPLEMENTED;
906 }
907
908 NTSTATUS _eventlog_OpenEventLogA(pipes_struct *p, struct eventlog_OpenEventLogA *r)
909 {
910 p->rng_fault_state = True;
911 return NT_STATUS_NOT_IMPLEMENTED;
912 }
913
914 NTSTATUS _eventlog_RegisterEventSourceA(pipes_struct *p, struct eventlog_RegisterEventSourceA *r)
915 {
916 p->rng_fault_state = True;
917 return NT_STATUS_NOT_IMPLEMENTED;
918 }
919
920 NTSTATUS _eventlog_OpenBackupEventLogA(pipes_struct *p, struct eventlog_OpenBackupEventLogA *r)
921 {
922 p->rng_fault_state = True;
923 return NT_STATUS_NOT_IMPLEMENTED;
924 }
925
926 NTSTATUS _eventlog_ReadEventLogA(pipes_struct *p, struct eventlog_ReadEventLogA *r)
927 {
928 p->rng_fault_state = True;
929 return NT_STATUS_NOT_IMPLEMENTED;
930 }
931
932 NTSTATUS _eventlog_ReportEventA(pipes_struct *p, struct eventlog_ReportEventA *r)
933 {
934 p->rng_fault_state = True;
935 return NT_STATUS_NOT_IMPLEMENTED;
936 }
937
938 NTSTATUS _eventlog_RegisterClusterSvc(pipes_struct *p, struct eventlog_RegisterClusterSvc *r)
939 {
940 p->rng_fault_state = True;
941 return NT_STATUS_NOT_IMPLEMENTED;
942 }
943
944 NTSTATUS _eventlog_DeregisterClusterSvc(pipes_struct *p, struct eventlog_DeregisterClusterSvc *r)
945 {
946 p->rng_fault_state = True;
947 return NT_STATUS_NOT_IMPLEMENTED;
948 }
949
950 NTSTATUS _eventlog_WriteClusterEvents(pipes_struct *p, struct eventlog_WriteClusterEvents *r)
951 {
952 p->rng_fault_state = True;
953 return NT_STATUS_NOT_IMPLEMENTED;
954 }
955
956 NTSTATUS _eventlog_GetLogIntormation(pipes_struct *p, struct eventlog_GetLogIntormation *r)
957 {
958 p->rng_fault_state = True;
959 return NT_STATUS_NOT_IMPLEMENTED;
960 }
961
962 NTSTATUS _eventlog_FlushEventLog(pipes_struct *p, struct eventlog_FlushEventLog *r)
963 {
964 p->rng_fault_state = True;
965 return NT_STATUS_NOT_IMPLEMENTED;
966 }
967
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