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1 /* accesslog.c - log operations for audit/history purposes */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4  *
5  * Copyright 2005-2006 The OpenLDAP Foundation.
6  * Portions copyright 2004-2005 Symas Corporation.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted only as authorized by the OpenLDAP
11  * Public License.
12  *
13  * A copy of this license is available in the file LICENSE in the
14  * top-level directory of the distribution or, alternatively, at
15  * <http://www.OpenLDAP.org/license.html>.
16  */
17 /* ACKNOWLEDGEMENTS:
18  * This work was initially developed by Howard Chu for inclusion in
19  * OpenLDAP Software.
20  */
21
22 #include "portable.h"
23
24 #ifdef SLAPD_OVER_ACCESSLOG
25
26 #include <stdio.h>
27
28 #include <ac/string.h>
29 #include <ac/ctype.h>
30
31 #include "slap.h"
32 #include "config.h"
33 #include "lutil.h"
34 #include "ldap_rq.h"
35
36 #define LOG_OP_ADD      0x001
37 #define LOG_OP_DELETE   0x002
38 #define LOG_OP_MODIFY   0x004
39 #define LOG_OP_MODRDN   0x008
40 #define LOG_OP_COMPARE  0x010
41 #define LOG_OP_SEARCH   0x020
42 #define LOG_OP_BIND     0x040
43 #define LOG_OP_UNBIND   0x080
44 #define LOG_OP_ABANDON  0x100
45 #define LOG_OP_EXTENDED 0x200
46 #define LOG_OP_UNKNOWN  0x400
47
48 #define LOG_OP_WRITES   (LOG_OP_ADD|LOG_OP_DELETE|LOG_OP_MODIFY|LOG_OP_MODRDN)
49 #define LOG_OP_READS    (LOG_OP_COMPARE|LOG_OP_SEARCH)
50 #define LOG_OP_SESSION  (LOG_OP_BIND|LOG_OP_UNBIND|LOG_OP_ABANDON)
51 #define LOG_OP_ALL              (LOG_OP_READS|LOG_OP_WRITES|LOG_OP_SESSION| \
52         LOG_OP_EXTENDED|LOG_OP_UNKNOWN)
53
54 typedef struct log_attr {
55         struct log_attr *next;
56         AttributeDescription *attr;
57 } log_attr;
58
59 typedef struct log_info {
60         BackendDB *li_db;
61         slap_mask_t li_ops;
62         int li_age;
63         int li_cycle;
64         struct re_s *li_task;
65         Filter *li_oldf;
66         Entry *li_old;
67         log_attr *li_oldattrs;
68         int li_success;
69         ldap_pvt_thread_rmutex_t li_op_rmutex;
70         ldap_pvt_thread_mutex_t li_log_mutex;
71 } log_info;
72
73 static ConfigDriver log_cf_gen;
74
75 enum {
76         LOG_DB = 1,
77         LOG_OPS,
78         LOG_PURGE,
79         LOG_SUCCESS,
80         LOG_OLD,
81         LOG_OLDATTR
82 };
83
84 static ConfigTable log_cfats[] = {
85         { "logdb", "suffix", 2, 2, 0, ARG_DN|ARG_MAGIC|LOG_DB,
86                 log_cf_gen, "( OLcfgOvAt:4.1 NAME 'olcAccessLogDB' "
87                         "DESC 'Suffix of database for log content' "
88                         "SUP distinguishedName SINGLE-VALUE )", NULL, NULL },
89         { "logops", "op|writes|reads|session|all", 2, 0, 0,
90                 ARG_MAGIC|LOG_OPS,
91                 log_cf_gen, "( OLcfgOvAt:4.2 NAME 'olcAccessLogOps' "
92                         "DESC 'Operation types to log' "
93                         "EQUALITY caseIgnoreMatch "
94                         "SYNTAX OMsDirectoryString )", NULL, NULL },
95         { "logpurge", "age> <interval", 3, 3, 0, ARG_MAGIC|LOG_PURGE,
96                 log_cf_gen, "( OLcfgOvAt:4.3 NAME 'olcAccessLogPurge' "
97                         "DESC 'Log cleanup parameters' "
98                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
99         { "logsuccess", NULL, 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|LOG_SUCCESS,
100                 log_cf_gen, "( OLcfgOvAt:4.4 NAME 'olcAccessLogSuccess' "
101                         "DESC 'Log successful ops only' "
102                         "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
103         { "logold", "filter", 2, 2, 0, ARG_MAGIC|LOG_OLD,
104                 log_cf_gen, "( OLcfgOvAt:4.5 NAME 'olcAccessLogOld' "
105                         "DESC 'Log old values when modifying entries matching the filter' "
106                         "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
107         { "logoldattr", "attrs", 2, 0, 0, ARG_MAGIC|LOG_OLDATTR,
108                 log_cf_gen, "( OLcfgOvAt:4.6 NAME 'olcAccessLogOldAttr' "
109                         "DESC 'Log old values of these attributes even if unmodified' "
110                         "SYNTAX OMsDirectoryString )", NULL, NULL },
111         { NULL }
112 };
113
114 static ConfigOCs log_cfocs[] = {
115         { "( OLcfgOvOc:4.1 "
116                 "NAME 'olcAccessLogConfig' "
117                 "DESC 'Access log configuration' "
118                 "SUP olcOverlayConfig "
119                 "MUST olcAccessLogDB "
120                 "MAY ( olcAccessLogOps $ olcAccessLogPurge $ olcAccessLogSuccess $ "
121                         "olcAccessLogOld $ olcAccessLogOldAttr ) )",
122                         Cft_Overlay, log_cfats },
123         { NULL }
124 };
125
126 static slap_verbmasks logops[] = {
127         { BER_BVC("all"),               LOG_OP_ALL },
128         { BER_BVC("writes"),    LOG_OP_WRITES },
129         { BER_BVC("session"),   LOG_OP_SESSION },
130         { BER_BVC("reads"),             LOG_OP_READS },
131         { BER_BVC("add"),               LOG_OP_ADD },
132         { BER_BVC("delete"),    LOG_OP_DELETE },
133         { BER_BVC("modify"),    LOG_OP_MODIFY },
134         { BER_BVC("modrdn"),    LOG_OP_MODRDN },
135         { BER_BVC("compare"),   LOG_OP_COMPARE },
136         { BER_BVC("search"),    LOG_OP_SEARCH },
137         { BER_BVC("bind"),              LOG_OP_BIND },
138         { BER_BVC("unbind"),    LOG_OP_UNBIND },
139         { BER_BVC("abandon"),   LOG_OP_ABANDON },
140         { BER_BVC("extended"),  LOG_OP_EXTENDED },
141         { BER_BVC("unknown"),   LOG_OP_UNKNOWN },
142         { BER_BVNULL, 0 }
143 };
144
145 /* Start with "add" in logops */
146 #define EN_OFFSET       4
147
148 enum {
149         LOG_EN_ADD = 0,
150         LOG_EN_DELETE,
151         LOG_EN_MODIFY,
152         LOG_EN_MODRDN,
153         LOG_EN_COMPARE,
154         LOG_EN_SEARCH,
155         LOG_EN_BIND,
156         LOG_EN_UNBIND,
157         LOG_EN_ABANDON,
158         LOG_EN_EXTENDED,
159         LOG_EN_UNKNOWN,
160         LOG_EN__COUNT
161 };
162
163 static ObjectClass *log_ocs[LOG_EN__COUNT], *log_container;
164
165 #define LOG_SCHEMA_ROOT "1.3.6.1.4.1.4203.666.11.5"
166
167 #define LOG_SCHEMA_AT LOG_SCHEMA_ROOT ".1"
168 #define LOG_SCHEMA_OC LOG_SCHEMA_ROOT ".2"
169
170 static AttributeDescription *ad_reqDN, *ad_reqStart, *ad_reqEnd, *ad_reqType,
171         *ad_reqSession, *ad_reqResult, *ad_reqAuthzID, *ad_reqControls,
172         *ad_reqRespControls, *ad_reqMethod, *ad_reqAssertion, *ad_reqNewRDN,
173         *ad_reqNewSuperior, *ad_reqDeleteOldRDN, *ad_reqMod,
174         *ad_reqScope, *ad_reqFilter, *ad_reqAttr, *ad_reqEntries,
175         *ad_reqSizeLimit, *ad_reqTimeLimit, *ad_reqAttrsOnly, *ad_reqData,
176         *ad_reqId, *ad_reqMessage, *ad_reqVersion, *ad_reqDerefAliases,
177         *ad_reqReferral, *ad_reqOld;
178
179 static struct {
180         char *at;
181         AttributeDescription **ad;
182 } lattrs[] = {
183         { "( " LOG_SCHEMA_AT ".1 NAME 'reqDN' "
184                 "DESC 'Target DN of request' "
185                 "EQUALITY distinguishedNameMatch "
186                 "SYNTAX OMsDN "
187                 "SINGLE-VALUE )", &ad_reqDN },
188         { "( " LOG_SCHEMA_AT ".2 NAME 'reqStart' "
189                 "DESC 'Start time of request' "
190                 "EQUALITY generalizedTimeMatch "
191                 "ORDERING generalizedTimeOrderingMatch "
192                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
193                 "SINGLE-VALUE )", &ad_reqStart },
194         { "( " LOG_SCHEMA_AT ".3 NAME 'reqEnd' "
195                 "DESC 'End time of request' "
196                 "EQUALITY generalizedTimeMatch "
197                 "ORDERING generalizedTimeOrderingMatch "
198                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
199                 "SINGLE-VALUE )", &ad_reqEnd },
200         { "( " LOG_SCHEMA_AT ".4 NAME 'reqType' "
201                 "DESC 'Type of request' "
202                 "EQUALITY caseIgnoreMatch "
203                 "SYNTAX OMsDirectoryString "
204                 "SINGLE-VALUE )", &ad_reqType },
205         { "( " LOG_SCHEMA_AT ".5 NAME 'reqSession' "
206                 "DESC 'Session ID of request' "
207                 "EQUALITY caseIgnoreMatch "
208                 "SYNTAX OMsDirectoryString "
209                 "SINGLE-VALUE )", &ad_reqSession },
210         { "( " LOG_SCHEMA_AT ".6 NAME 'reqAuthzID' "
211                 "DESC 'Authorization ID of requestor' "
212                 "EQUALITY distinguishedNameMatch "
213                 "SYNTAX OMsDN "
214                 "SINGLE-VALUE )", &ad_reqAuthzID },
215         { "( " LOG_SCHEMA_AT ".7 NAME 'reqResult' "
216                 "DESC 'Result code of request' "
217                 "EQUALITY integerMatch "
218                 "ORDERING integerOrderingMatch "
219                 "SYNTAX OMsInteger "
220                 "SINGLE-VALUE )", &ad_reqResult },
221         { "( " LOG_SCHEMA_AT ".8 NAME 'reqMessage' "
222                 "DESC 'Error text of request' "
223                 "EQUALITY caseIgnoreMatch "
224                 "SUBSTR caseIgnoreSubstringsMatch "
225                 "SYNTAX OMsDirectoryString "
226                 "SINGLE-VALUE )", &ad_reqMessage },
227         { "( " LOG_SCHEMA_AT ".9 NAME 'reqReferral' "
228                 "DESC 'Referrals returned for request' "
229                 "SUP labeledURI )", &ad_reqReferral },
230         { "( " LOG_SCHEMA_AT ".10 NAME 'reqControls' "
231                 "DESC 'Request controls' "
232                 "SYNTAX OMsOctetString )", &ad_reqControls },
233         { "( " LOG_SCHEMA_AT ".11 NAME 'reqRespControls' "
234                 "DESC 'Response controls of request' "
235                 "SYNTAX OMsOctetString )", &ad_reqRespControls },
236         { "( " LOG_SCHEMA_AT ".12 NAME 'reqId' "
237                 "DESC 'ID of Request to Abandon' "
238                 "EQUALITY integerMatch "
239                 "ORDERING integerOrderingMatch "
240                 "SYNTAX OMsInteger "
241                 "SINGLE-VALUE )", &ad_reqId },
242         { "( " LOG_SCHEMA_AT ".13 NAME 'reqVersion' "
243                 "DESC 'Protocol version of Bind request' "
244                 "EQUALITY integerMatch "
245                 "ORDERING integerOrderingMatch "
246                 "SYNTAX OMsInteger "
247                 "SINGLE-VALUE )", &ad_reqVersion },
248         { "( " LOG_SCHEMA_AT ".14 NAME 'reqMethod' "
249                 "DESC 'Bind method of request' "
250                 "EQUALITY caseIgnoreMatch "
251                 "SYNTAX OMsDirectoryString "
252                 "SINGLE-VALUE )", &ad_reqMethod },
253         { "( " LOG_SCHEMA_AT ".15 NAME 'reqAssertion' "
254                 "DESC 'Compare Assertion of request' "
255                 "SYNTAX OMsDirectoryString "
256                 "SINGLE-VALUE )", &ad_reqAssertion },
257         { "( " LOG_SCHEMA_AT ".16 NAME 'reqMod' "
258                 "DESC 'Modifications of request' "
259                 "EQUALITY octetStringMatch "
260                 "SUBSTR octetStringSubstringsMatch "
261                 "SYNTAX OMsOctetString )", &ad_reqMod },
262         { "( " LOG_SCHEMA_AT ".17 NAME 'reqOld' "
263                 "DESC 'Old values of entry before request completed' "
264                 "EQUALITY octetStringMatch "
265                 "SUBSTR octetStringSubstringsMatch "
266                 "SYNTAX OMsOctetString )", &ad_reqOld },
267         { "( " LOG_SCHEMA_AT ".18 NAME 'reqNewRDN' "
268                 "DESC 'New RDN of request' "
269                 "EQUALITY distinguishedNameMatch "
270                 "SYNTAX OMsDN "
271                 "SINGLE-VALUE )", &ad_reqNewRDN },
272         { "( " LOG_SCHEMA_AT ".19 NAME 'reqDeleteOldRDN' "
273                 "DESC 'Delete old RDN' "
274                 "EQUALITY booleanMatch "
275                 "SYNTAX OMsBoolean "
276                 "SINGLE-VALUE )", &ad_reqDeleteOldRDN },
277         { "( " LOG_SCHEMA_AT ".20 NAME 'reqNewSuperior' "
278                 "DESC 'New superior DN of request' "
279                 "EQUALITY distinguishedNameMatch "
280                 "SYNTAX OMsDN "
281                 "SINGLE-VALUE )", &ad_reqNewSuperior },
282         { "( " LOG_SCHEMA_AT ".21 NAME 'reqScope' "
283                 "DESC 'Scope of request' "
284                 "EQUALITY caseIgnoreMatch "
285                 "SYNTAX OMsDirectoryString "
286                 "SINGLE-VALUE )", &ad_reqScope },
287         { "( " LOG_SCHEMA_AT ".22 NAME 'reqDerefAliases' "
288                 "DESC 'Disposition of Aliases in request' "
289                 "EQUALITY caseIgnoreMatch "
290                 "SYNTAX OMsDirectoryString "
291                 "SINGLE-VALUE )", &ad_reqDerefAliases },
292         { "( " LOG_SCHEMA_AT ".23 NAME 'reqAttrsOnly' "
293                 "DESC 'Attributes and values of request' "
294                 "EQUALITY booleanMatch "
295                 "SYNTAX OMsBoolean "
296                 "SINGLE-VALUE )", &ad_reqAttrsOnly },
297         { "( " LOG_SCHEMA_AT ".24 NAME 'reqFilter' "
298                 "DESC 'Filter of request' "
299                 "EQUALITY caseIgnoreMatch "
300                 "SUBSTR caseIgnoreSubstringsMatch "
301                 "SYNTAX OMsDirectoryString "
302                 "SINGLE-VALUE )", &ad_reqFilter },
303         { "( " LOG_SCHEMA_AT ".25 NAME 'reqAttr' "
304                 "DESC 'Attributes of request' "
305                 "EQUALITY caseIgnoreMatch "
306                 "SYNTAX OMsDirectoryString )", &ad_reqAttr },
307         { "( " LOG_SCHEMA_AT ".26 NAME 'reqSizeLimit' "
308                 "DESC 'Size limit of request' "
309                 "EQUALITY integerMatch "
310                 "ORDERING integerOrderingMatch "
311                 "SYNTAX OMsInteger "
312                 "SINGLE-VALUE )", &ad_reqSizeLimit },
313         { "( " LOG_SCHEMA_AT ".27 NAME 'reqTimeLimit' "
314                 "DESC 'Time limit of request' "
315                 "EQUALITY integerMatch "
316                 "ORDERING integerOrderingMatch "
317                 "SYNTAX OMsInteger "
318                 "SINGLE-VALUE )", &ad_reqTimeLimit },
319         { "( " LOG_SCHEMA_AT ".28 NAME 'reqEntries' "
320                 "DESC 'Number of entries returned' "
321                 "EQUALITY integerMatch "
322                 "ORDERING integerOrderingMatch "
323                 "SYNTAX OMsInteger "
324                 "SINGLE-VALUE )", &ad_reqEntries },
325         { "( " LOG_SCHEMA_AT ".29 NAME 'reqData' "
326                 "DESC 'Data of extended request' "
327                 "EQUALITY octetStringMatch "
328                 "SUBSTR octetStringSubstringsMatch "
329                 "SYNTAX OMsOctetString "
330                 "SINGLE-VALUE )", &ad_reqData },
331         { NULL, NULL }
332 };
333
334 static struct {
335         char *ot;
336         ObjectClass **oc;
337 } locs[] = {
338         { "( " LOG_SCHEMA_OC ".0 NAME 'auditContainer' "
339                 "DESC 'AuditLog container' "
340                 "SUP top STRUCTURAL "
341                 "MAY ( cn $ reqStart $ reqEnd ) )", &log_container },
342         { "( " LOG_SCHEMA_OC ".1 NAME 'auditObject' "
343                 "DESC 'OpenLDAP request auditing' "
344                 "SUP top STRUCTURAL "
345                 "MUST ( reqStart $ reqType $ reqSession ) "
346                 "MAY ( reqDN $ reqAuthzID $ reqControls $ reqRespControls $ reqEnd $ "
347                         "reqResult $ reqMessage $ reqReferral ) )",
348                                 &log_ocs[LOG_EN_UNBIND] },
349         { "( " LOG_SCHEMA_OC ".2 NAME 'auditReadObject' "
350                 "DESC 'OpenLDAP read request record' "
351                 "SUP auditObject STRUCTURAL )", NULL },
352         { "( " LOG_SCHEMA_OC ".3 NAME 'auditWriteObject' "
353                 "DESC 'OpenLDAP write request record' "
354                 "SUP auditObject STRUCTURAL )", NULL },
355         { "( " LOG_SCHEMA_OC ".4 NAME 'auditAbandon' "
356                 "DESC 'Abandon operation' "
357                 "SUP auditObject STRUCTURAL "
358                 "MUST reqId )", &log_ocs[LOG_EN_ABANDON] },
359         { "( " LOG_SCHEMA_OC ".5 NAME 'auditAdd' "
360                 "DESC 'Add operation' "
361                 "SUP auditWriteObject STRUCTURAL "
362                 "MUST reqMod )", &log_ocs[LOG_EN_ADD] },
363         { "( " LOG_SCHEMA_OC ".6 NAME 'auditBind' "
364                 "DESC 'Bind operation' "
365                 "SUP auditObject STRUCTURAL "
366                 "MUST ( reqVersion $ reqMethod ) )", &log_ocs[LOG_EN_BIND] },
367         { "( " LOG_SCHEMA_OC ".7 NAME 'auditCompare' "
368                 "DESC 'Compare operation' "
369                 "SUP auditReadObject STRUCTURAL "
370                 "MUST reqAssertion )", &log_ocs[LOG_EN_COMPARE] },
371         { "( " LOG_SCHEMA_OC ".8 NAME 'auditDelete' "
372                 "DESC 'Delete operation' "
373                 "SUP auditWriteObject STRUCTURAL "
374                 "MAY reqOld )", &log_ocs[LOG_EN_DELETE] },
375         { "( " LOG_SCHEMA_OC ".9 NAME 'auditModify' "
376                 "DESC 'Modify operation' "
377                 "SUP auditWriteObject STRUCTURAL "
378                 "MAY reqOld MUST reqMod )", &log_ocs[LOG_EN_MODIFY] },
379         { "( " LOG_SCHEMA_OC ".10 NAME 'auditModRDN' "
380                 "DESC 'ModRDN operation' "
381                 "SUP auditWriteObject STRUCTURAL "
382                 "MUST ( reqNewRDN $ reqDeleteOldRDN ) "
383                 "MAY ( reqNewSuperior $ reqOld ) )", &log_ocs[LOG_EN_MODRDN] },
384         { "( " LOG_SCHEMA_OC ".11 NAME 'auditSearch' "
385                 "DESC 'Search operation' "
386                 "SUP auditReadObject STRUCTURAL "
387                 "MUST ( reqScope $ reqDerefAliases $ reqAttrsonly ) "
388                 "MAY ( reqFilter $ reqAttr $ reqEntries $ reqSizeLimit $ "
389                         "reqTimeLimit ) )", &log_ocs[LOG_EN_SEARCH] },
390         { "( " LOG_SCHEMA_OC ".12 NAME 'auditExtended' "
391                 "DESC 'Extended operation' "
392                 "SUP auditObject STRUCTURAL "
393                 "MAY reqData )", &log_ocs[LOG_EN_EXTENDED] },
394         { NULL, NULL }
395 };
396
397 #define RDNEQ   "reqStart="
398
399 /* Our time intervals are of the form [ddd+]hh:mm[:ss]
400  * If a field is present, it must be two digits. (Except for
401  * days, which can be arbitrary width.)
402  */
403 static int
404 log_age_parse(char *agestr)
405 {
406         int t1, t2;
407         int gotdays = 0;
408         char *endptr;
409
410         t1 = strtol( agestr, &endptr, 10 );
411         /* Is there a days delimiter? */
412         if ( *endptr == '+' ) {
413                 /* 32 bit time only covers about 68 years */
414                 if ( t1 < 0 || t1 > 25000 )
415                         return -1;
416                 t1 *= 24;
417                 gotdays = 1;
418                 agestr = endptr + 1;
419         } else {
420                 if ( agestr[2] != ':' ) {
421                         /* No valid delimiter found, fail */
422                         return -1;
423                 }
424                 t1 *= 60;
425                 agestr += 3;
426         }
427
428         t2 = atoi( agestr );
429         t1 += t2;
430
431         if ( agestr[2] ) {
432                 /* if there's a delimiter, it can only be a colon */
433                 if ( agestr[2] != ':' )
434                         return -1;
435         } else {
436                 /* If we're at the end of the string, and we started with days,
437                  * fail because we expected to find minutes too.
438                  */
439                 return gotdays ? -1 : t1 * 60;
440         }
441
442         agestr += 3;
443         t2 = atoi( agestr );
444
445         /* last field can only be seconds */
446         if ( agestr[2] && ( agestr[2] != ':' || !gotdays ))
447                 return -1;
448         t1 *= 60;
449         t1 += t2;
450
451         if ( agestr[2] ) {
452                 agestr += 3;
453                 if ( agestr[2] )
454                         return -1;
455                 t1 *= 60;
456                 t1 += atoi( agestr );
457         } else if ( gotdays ) {
458                 /* only got days+hh:mm */
459                 t1 *= 60;
460         }
461         return t1;
462 }
463
464 static void
465 log_age_unparse( int age, struct berval *agebv )
466 {
467         int dd, hh, mm, ss;
468         char *ptr;
469
470         ss = age % 60;
471         age /= 60;
472         mm = age % 60;
473         age /= 60;
474         hh = age % 24;
475         age /= 24;
476         dd = age;
477
478         ptr = agebv->bv_val;
479
480         if ( dd ) 
481                 ptr += sprintf( ptr, "%d+", dd );
482         ptr += sprintf( ptr, "%02d:%02d", hh, mm );
483         if ( ss )
484                 ptr += sprintf( ptr, ":%02d", ss );
485
486         agebv->bv_len = ptr - agebv->bv_val;
487 }
488
489 static slap_callback nullsc = { NULL, NULL, NULL, NULL };
490
491 #define PURGE_INCREMENT 100
492
493 typedef struct purge_data {
494         int slots;
495         int used;
496         BerVarray dn;
497         BerVarray ndn;
498 } purge_data;
499
500 static int
501 log_old_lookup( Operation *op, SlapReply *rs )
502 {
503         purge_data *pd = op->o_callback->sc_private;
504
505         if ( rs->sr_type != REP_SEARCH) return 0;
506
507         if ( pd->used >= pd->slots ) {
508                 pd->slots += PURGE_INCREMENT;
509                 pd->dn = ch_realloc( pd->dn, pd->slots * sizeof( struct berval ));
510                 pd->ndn = ch_realloc( pd->ndn, pd->slots * sizeof( struct berval ));
511         }
512         ber_dupbv( &pd->dn[pd->used], &rs->sr_entry->e_name );
513         ber_dupbv( &pd->ndn[pd->used], &rs->sr_entry->e_nname );
514         pd->used++;
515         return 0;
516 }
517
518 /* Periodically search for old entries in the log database and delete them */
519 static void *
520 accesslog_purge( void *ctx, void *arg )
521 {
522         struct re_s *rtask = arg;
523         struct log_info *li = rtask->arg;
524
525         Connection conn = {0};
526         OperationBuffer opbuf;
527         Operation *op = (Operation *) &opbuf;
528         SlapReply rs = {REP_RESULT};
529         slap_callback cb = { NULL, log_old_lookup, NULL, NULL };
530         Filter f;
531         AttributeAssertion ava = {0};
532         purge_data pd = {0};
533         char timebuf[LDAP_LUTIL_GENTIME_BUFSIZE];
534         time_t old = slap_get_time();
535
536         connection_fake_init( &conn, op, ctx );
537
538         f.f_choice = LDAP_FILTER_LE;
539         f.f_ava = &ava;
540         f.f_next = NULL;
541
542         ava.aa_desc = ad_reqStart;
543         ava.aa_value.bv_val = timebuf;
544         ava.aa_value.bv_len = sizeof(timebuf);
545
546         old -= li->li_age;
547         slap_timestamp( &old, &ava.aa_value );
548
549         op->o_tag = LDAP_REQ_SEARCH;
550         op->o_bd = li->li_db;
551         op->o_dn = li->li_db->be_rootdn;
552         op->o_ndn = li->li_db->be_rootndn;
553         op->o_req_dn = li->li_db->be_suffix[0];
554         op->o_req_ndn = li->li_db->be_nsuffix[0];
555         op->o_callback = &cb;
556         op->ors_scope = LDAP_SCOPE_ONELEVEL;
557         op->ors_deref = LDAP_DEREF_NEVER;
558         op->ors_tlimit = SLAP_NO_LIMIT;
559         op->ors_slimit = SLAP_NO_LIMIT;
560         op->ors_filter = &f;
561         filter2bv_x( op, &f, &op->ors_filterstr );
562         op->ors_attrs = slap_anlist_no_attrs;
563         op->ors_attrsonly = 1;
564         
565         cb.sc_private = &pd;
566
567         op->o_bd->be_search( op, &rs );
568         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
569
570         if ( pd.used ) {
571                 int i;
572
573                 op->o_tag = LDAP_REQ_DELETE;
574                 op->o_callback = &nullsc;
575
576                 for (i=0; i<pd.used; i++) {
577                         op->o_req_dn = pd.dn[i];
578                         op->o_req_ndn = pd.ndn[i];
579                         op->o_bd->be_delete( op, &rs );
580                         ch_free( pd.ndn[i].bv_val );
581                         ch_free( pd.dn[i].bv_val );
582                 }
583                 ch_free( pd.ndn );
584                 ch_free( pd.dn );
585         }
586
587         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
588         ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
589         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
590
591         return NULL;
592 }
593
594 static int
595 log_cf_gen(ConfigArgs *c)
596 {
597         slap_overinst *on = (slap_overinst *)c->bi;
598         struct log_info *li = on->on_bi.bi_private;
599         int rc = 0;
600         slap_mask_t tmask = 0;
601         char agebuf[2*STRLENOF("ddddd+hh:mm:ss  ")];
602         struct berval agebv, cyclebv;
603
604         switch( c->op ) {
605         case SLAP_CONFIG_EMIT:
606                 switch( c->type ) {
607                 case LOG_DB:
608                         if ( li->li_db == NULL ) {
609                                 snprintf( c->msg, sizeof( c->msg ),
610                                         "accesslog: \"logdb <suffix>\" must be specified" );
611                                 Debug( LDAP_DEBUG_ANY, "%s: %s \"%s\"\n",
612                                         c->log, c->msg, c->value_dn.bv_val );
613                                 rc = 1;
614                                 break;
615                         }
616                         value_add( &c->rvalue_vals, li->li_db->be_suffix );
617                         value_add( &c->rvalue_nvals, li->li_db->be_nsuffix );
618                         break;
619                 case LOG_OPS:
620                         rc = mask_to_verbs( logops, li->li_ops, &c->rvalue_vals );
621                         break;
622                 case LOG_PURGE:
623                         if ( !li->li_age ) {
624                                 rc = 1;
625                                 break;
626                         }
627                         agebv.bv_val = agebuf;
628                         log_age_unparse( li->li_age, &agebv );
629                         agebv.bv_val[agebv.bv_len] = ' ';
630                         agebv.bv_len++;
631                         cyclebv.bv_val = agebv.bv_val + agebv.bv_len;
632                         log_age_unparse( li->li_cycle, &cyclebv );
633                         agebv.bv_len += cyclebv.bv_len;
634                         value_add_one( &c->rvalue_vals, &agebv );
635                         break;
636                 case LOG_SUCCESS:
637                         if ( li->li_success )
638                                 c->value_int = li->li_success;
639                         else
640                                 rc = 1;
641                         break;
642                 case LOG_OLD:
643                         if ( li->li_oldf ) {
644                                 filter2bv( li->li_oldf, &agebv );
645                                 value_add_one( &c->rvalue_vals, &agebv );
646                         }
647                         else
648                                 rc = 1;
649                         break;
650                 case LOG_OLDATTR:
651                         if ( li->li_oldattrs ) {
652                                 log_attr *la;
653
654                                 for ( la = li->li_oldattrs; la; la=la->next )
655                                         value_add_one( &c->rvalue_vals, &la->attr->ad_cname );
656                         }
657                         else
658                                 rc = 1;
659                         break;
660                 }
661                 break;
662         case LDAP_MOD_DELETE:
663                 switch( c->type ) {
664                 case LOG_DB:
665                         /* noop. this should always be a valid backend. */
666                         break;
667                 case LOG_OPS:
668                         if ( c->valx < 0 ) {
669                                 li->li_ops = 0;
670                         } else {
671                                 rc = verbs_to_mask( 1, &c->line, logops, &tmask );
672                                 if ( rc == 0 )
673                                         li->li_ops &= ~tmask;
674                         }
675                         break;
676                 case LOG_PURGE:
677                         if ( li->li_task ) {
678                                 struct re_s *re = li->li_task;
679                                 li->li_task = NULL;
680                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ))
681                                         ldap_pvt_runqueue_stoptask( &slapd_rq, re );
682                                 ldap_pvt_runqueue_remove( &slapd_rq, re );
683                         }
684                         li->li_age = 0;
685                         li->li_cycle = 0;
686                         break;
687                 case LOG_SUCCESS:
688                         li->li_success = 0;
689                         break;
690                 case LOG_OLD:
691                         if ( li->li_oldf ) {
692                                 filter_free( li->li_oldf );
693                                 li->li_oldf = NULL;
694                         }
695                         break;
696                 case LOG_OLDATTR:
697                         if ( c->valx < 0 ) {
698                                 log_attr *la, *ln;
699
700                                 for ( la = li->li_oldattrs; la; la = ln ) {
701                                         ln = la->next;
702                                         ch_free( la );
703                                 }
704                         } else {
705                                 log_attr *la = NULL, **lp;
706                                 int i;
707
708                                 for ( lp = &li->li_oldattrs, i=0; i < c->valx; i++ ) {
709                                         la = *lp;
710                                         lp = &la->next;
711                                 }
712                                 *lp = la->next;
713                                 ch_free( la );
714                         }
715                         break;
716                 }
717                 break;
718         default:
719                 switch( c->type ) {
720                 case LOG_DB:
721                         li->li_db = select_backend( &c->value_ndn, 0, 0 );
722                         if ( !li->li_db ) {
723                                 snprintf( c->msg, sizeof( c->msg ),
724                                         "<%s> no matching backend found for suffix",
725                                         c->argv[0] );
726                                 Debug( LDAP_DEBUG_ANY, "%s: %s \"%s\"\n",
727                                         c->log, c->msg, c->value_dn.bv_val );
728                                 rc = 1;
729                         }
730                         if ( BER_BVISEMPTY( &li->li_db->be_rootdn )) {
731                                 snprintf( c->msg, sizeof( c->msg ),
732                                         "<%s> no rootDN was configured for suffix",
733                                         c->argv[0] );
734                                 Debug( LDAP_DEBUG_ANY, "%s: %s \"%s\"\n",
735                                         c->log, c->msg, c->value_dn.bv_val );
736                                 rc = 1;
737                         }
738                         ch_free( c->value_dn.bv_val );
739                         ch_free( c->value_ndn.bv_val );
740                         break;
741                 case LOG_OPS:
742                         rc = verbs_to_mask( c->argc, c->argv, logops, &tmask );
743                         if ( rc == 0 )
744                                 li->li_ops |= tmask;
745                         break;
746                 case LOG_PURGE:
747                         li->li_age = log_age_parse( c->argv[1] );
748                         if ( li->li_age == -1 ) {
749                                 rc = 1;
750                         } else {
751                                 li->li_cycle = log_age_parse( c->argv[2] );
752                                 if ( li->li_cycle == -1 ) {
753                                         rc = 1;
754                                 } else if ( slapMode & SLAP_SERVER_MODE ) {
755                                         struct re_s *re = li->li_task;
756                                         if ( re )
757                                                 re->interval.tv_sec = li->li_cycle;
758                                         else
759                                                 li->li_task = ldap_pvt_runqueue_insert( &slapd_rq,
760                                                         li->li_cycle, accesslog_purge, li,
761                                                         "accesslog_purge", li->li_db ?
762                                                                 li->li_db->be_suffix[0].bv_val :
763                                                                 c->be->be_suffix[0].bv_val );
764                                 }
765                         }
766                         break;
767                 case LOG_SUCCESS:
768                         li->li_success = c->value_int;
769                         break;
770                 case LOG_OLD:
771                         li->li_oldf = str2filter( c->argv[1] );
772                         if ( !li->li_oldf ) {
773                                 sprintf( c->msg, "bad filter!" );
774                                 rc = 1;
775                         }
776                         break;
777                 case LOG_OLDATTR: {
778                         int i;
779                         AttributeDescription *ad;
780                         const char *text;
781
782                         for ( i=1; i< c->argc; i++ ) {
783                                 ad = NULL;
784                                 if ( slap_str2ad( c->argv[i], &ad, &text ) == LDAP_SUCCESS ) {
785                                         log_attr *la = ch_malloc( sizeof( log_attr ));
786                                         la->attr = ad;
787                                         la->next = li->li_oldattrs;
788                                         li->li_oldattrs = la;
789                                 } else {
790                                         sprintf( c->msg, "%s: %s", c->argv[i], text );
791                                         rc = ARG_BAD_CONF;
792                                         break;
793                                 }
794                         }
795                         }
796                         break;
797                 }
798                 break;
799         }
800         return rc;
801 }
802
803 static Entry *accesslog_entry( Operation *op, int logop,
804         Operation *op2 ) {
805         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
806         log_info *li = on->on_bi.bi_private;
807
808         char rdnbuf[STRLENOF(RDNEQ)+LDAP_LUTIL_GENTIME_BUFSIZE+8];
809         char nrdnbuf[STRLENOF(RDNEQ)+LDAP_LUTIL_GENTIME_BUFSIZE+8];
810
811         struct berval rdn, nrdn, timestamp, ntimestamp, bv;
812         slap_verbmasks *lo = logops+logop+EN_OFFSET;
813
814         Entry *e = ch_calloc( 1, sizeof(Entry) );
815
816         strcpy( rdnbuf, RDNEQ );
817         rdn.bv_val = rdnbuf;
818         strcpy( nrdnbuf, RDNEQ );
819         nrdn.bv_val = nrdnbuf;
820
821         timestamp.bv_val = rdnbuf+STRLENOF(RDNEQ);
822         timestamp.bv_len = sizeof(rdnbuf) - STRLENOF(RDNEQ);
823         slap_timestamp( &op->o_time, &timestamp );
824         sprintf( timestamp.bv_val + timestamp.bv_len-1, ".%06dZ", op->o_tincr );
825         timestamp.bv_len += 7;
826
827         rdn.bv_len = STRLENOF(RDNEQ)+timestamp.bv_len;
828         ad_reqStart->ad_type->sat_equality->smr_normalize(
829                 SLAP_MR_VALUE_OF_ASSERTION_SYNTAX, ad_reqStart->ad_type->sat_syntax,
830                 ad_reqStart->ad_type->sat_equality, &timestamp, &ntimestamp,
831                 op->o_tmpmemctx );
832
833         strcpy( nrdn.bv_val + STRLENOF(RDNEQ), ntimestamp.bv_val );
834         nrdn.bv_len = STRLENOF(RDNEQ)+ntimestamp.bv_len;
835         build_new_dn( &e->e_name, li->li_db->be_suffix, &rdn, NULL );
836         build_new_dn( &e->e_nname, li->li_db->be_nsuffix, &nrdn, NULL );
837
838         attr_merge_one( e, slap_schema.si_ad_objectClass,
839                 &log_ocs[logop]->soc_cname, NULL );
840         attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
841                 &log_ocs[logop]->soc_cname, NULL );
842         attr_merge_one( e, ad_reqStart, &timestamp, &ntimestamp );
843         op->o_tmpfree( ntimestamp.bv_val, op->o_tmpmemctx );
844
845         slap_op_time( &op2->o_time, &op2->o_tincr );
846
847         timestamp.bv_len = sizeof(rdnbuf) - STRLENOF(RDNEQ);
848         slap_timestamp( &op2->o_time, &timestamp );
849         sprintf( timestamp.bv_val + timestamp.bv_len-1, ".%06dZ", op2->o_tincr );
850         timestamp.bv_len += 7;
851
852         attr_merge_normalize_one( e, ad_reqEnd, &timestamp, op->o_tmpmemctx );
853
854         /* Exops have OID appended */
855         if ( logop == LOG_EN_EXTENDED ) {
856                 bv.bv_len = lo->word.bv_len + op->ore_reqoid.bv_len + 2;
857                 bv.bv_val = ch_malloc( bv.bv_len + 1 );
858                 AC_MEMCPY( bv.bv_val, lo->word.bv_val, lo->word.bv_len );
859                 bv.bv_val[lo->word.bv_len] = '{';
860                 AC_MEMCPY( bv.bv_val+lo->word.bv_len+1, op->ore_reqoid.bv_val,
861                         op->ore_reqoid.bv_len );
862                 bv.bv_val[bv.bv_len-1] = '}';
863                 bv.bv_val[bv.bv_len] = '\0';
864                 attr_merge_one( e, ad_reqType, &bv, NULL );
865         } else {
866                 attr_merge_one( e, ad_reqType, &lo->word, NULL );
867         }
868
869         rdn.bv_len = sprintf( rdn.bv_val, "%lu", op->o_connid );
870         attr_merge_one( e, ad_reqSession, &rdn, NULL );
871
872         if ( BER_BVISNULL( &op->o_dn )) 
873                 attr_merge_one( e, ad_reqAuthzID, (struct berval *)&slap_empty_bv,
874                         (struct berval *)&slap_empty_bv );
875         else
876                 attr_merge_one( e, ad_reqAuthzID, &op->o_dn, &op->o_ndn );
877
878         /* FIXME: need to add reqControls and reqRespControls */
879
880         return e;
881 }
882
883 static struct berval scopes[] = {
884         BER_BVC("base"),
885         BER_BVC("one"),
886         BER_BVC("sub"),
887         BER_BVC("subord")
888 };
889
890 static struct berval derefs[] = {
891         BER_BVC("never"),
892         BER_BVC("searching"),
893         BER_BVC("finding"),
894         BER_BVC("always")
895 };
896
897 static struct berval simple = BER_BVC("SIMPLE");
898
899 static void accesslog_val2val(AttributeDescription *ad, struct berval *val,
900         char c_op, struct berval *dst) {
901         char *ptr;
902
903         dst->bv_len = ad->ad_cname.bv_len + val->bv_len + 2;
904         if ( c_op ) dst->bv_len++;
905
906         dst->bv_val = ch_malloc( dst->bv_len+1 );
907
908         ptr = lutil_strcopy( dst->bv_val, ad->ad_cname.bv_val );
909         *ptr++ = ':';
910         if ( c_op )
911                 *ptr++ = c_op;
912         *ptr++ = ' ';
913         AC_MEMCPY( ptr, val->bv_val, val->bv_len );
914         dst->bv_val[dst->bv_len] = '\0';
915 }
916
917 static int accesslog_response(Operation *op, SlapReply *rs) {
918         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
919         log_info *li = on->on_bi.bi_private;
920         Attribute *a, *last_attr;
921         Modifications *m;
922         struct berval *b;
923         int i;
924         int logop;
925         slap_verbmasks *lo;
926         Entry *e = NULL, *old = NULL;
927         char timebuf[LDAP_LUTIL_GENTIME_BUFSIZE+8];
928         struct berval bv;
929         char *ptr;
930         BerVarray vals;
931         Operation op2 = {0};
932         SlapReply rs2 = {REP_RESULT};
933
934         if ( rs->sr_type != REP_RESULT && rs->sr_type != REP_EXTENDED )
935                 return SLAP_CB_CONTINUE;
936
937         switch ( op->o_tag ) {
938         case LDAP_REQ_ADD:              logop = LOG_EN_ADD; break;
939         case LDAP_REQ_DELETE:   logop = LOG_EN_DELETE; break;
940         case LDAP_REQ_MODIFY:   logop = LOG_EN_MODIFY; break;
941         case LDAP_REQ_MODRDN:   logop = LOG_EN_MODRDN; break;
942         case LDAP_REQ_COMPARE:  logop = LOG_EN_COMPARE; break;
943         case LDAP_REQ_SEARCH:   logop = LOG_EN_SEARCH; break;
944         case LDAP_REQ_BIND:             logop = LOG_EN_BIND; break;
945         case LDAP_REQ_EXTENDED: logop = LOG_EN_EXTENDED; break;
946         default:        /* unknown operation type */
947                 logop = LOG_EN_UNKNOWN; break;
948         }       /* Unbind and Abandon never reach here */
949
950         lo = logops+logop+EN_OFFSET;
951         if ( !( li->li_ops & lo->mask ))
952                 return SLAP_CB_CONTINUE;
953
954         if ( lo->mask & LOG_OP_WRITES ) {
955                 ldap_pvt_thread_mutex_lock( &li->li_log_mutex );
956                 old = li->li_old;
957                 li->li_old = NULL;
958                 ldap_pvt_thread_rmutex_unlock( &li->li_op_rmutex, op->o_tid );
959         }
960
961         if ( li->li_success && rs->sr_err != LDAP_SUCCESS )
962                 goto done;
963
964         e = accesslog_entry( op, logop, &op2 );
965
966         attr_merge_one( e, ad_reqDN, &op->o_req_dn, &op->o_req_ndn );
967
968         if ( rs->sr_text ) {
969                 ber_str2bv( rs->sr_text, 0, 0, &bv );
970                 attr_merge_one( e, ad_reqMessage, &bv, NULL );
971         }
972         bv.bv_len = sprintf( timebuf, "%d", rs->sr_err );
973         bv.bv_val = timebuf;
974
975         attr_merge_one( e, ad_reqResult, &bv, NULL );
976
977         last_attr = attr_find( e->e_attrs, ad_reqResult );
978
979         switch( logop ) {
980         case LOG_EN_ADD:
981         case LOG_EN_DELETE: {
982                 char c_op;
983                 Entry *e2;
984
985                 if ( logop == LOG_EN_ADD ) {
986                         e2 = op->ora_e;
987                         c_op = '+';
988                 } else {
989                         if ( !old )
990                                 break;
991                         e2 = old;
992                         c_op = 0;
993                 }
994                 /* count all the vals */
995                 i = 0;
996                 for ( a=e2->e_attrs; a; a=a->a_next ) {
997                         if ( a->a_vals ) {
998                                 for (b=a->a_vals; !BER_BVISNULL( b ); b++) {
999                                         i++;
1000                                 }
1001                         }
1002                 }
1003                 vals = ch_malloc( (i+1) * sizeof( struct berval ));
1004                 i = 0;
1005                 for ( a=e2->e_attrs; a; a=a->a_next ) {
1006                         if ( a->a_vals ) {
1007                                 for (b=a->a_vals; !BER_BVISNULL( b ); b++,i++) {
1008                                         accesslog_val2val( a->a_desc, b, c_op, &vals[i] );
1009                                 }
1010                         }
1011                 }
1012                 vals[i].bv_val = NULL;
1013                 vals[i].bv_len = 0;
1014                 a = attr_alloc( logop == LOG_EN_ADD ? ad_reqMod : ad_reqOld );
1015                 a->a_vals = vals;
1016                 a->a_nvals = vals;
1017                 last_attr->a_next = a;
1018                 break;
1019         }
1020
1021         case LOG_EN_MODIFY:
1022                 /* count all the mods */
1023                 i = 0;
1024                 for ( m=op->orm_modlist; m; m=m->sml_next ) {
1025                         if ( m->sml_values ) {
1026                                 for (b=m->sml_values; !BER_BVISNULL( b ); b++) {
1027                                         i++;
1028                                 }
1029                         } else if ( m->sml_op == LDAP_MOD_DELETE ) {
1030                                 i++;
1031                         }
1032                 }
1033                 vals = ch_malloc( (i+1) * sizeof( struct berval ));
1034                 i = 0;
1035
1036                 /* init flags on old entry */
1037                 if ( old ) {
1038                         for ( a=old->e_attrs; a; a=a->a_next ) {
1039                                 log_attr *la;
1040                                 a->a_flags = 0;
1041
1042                                 /* look for attrs that are always logged */
1043                                 for ( la=li->li_oldattrs; la; la=la->next )
1044                                         if ( a->a_desc == la->attr )
1045                                                 a->a_flags = 1;
1046                         }
1047                 }
1048
1049                 for ( m=op->orm_modlist; m; m=m->sml_next ) {
1050                         /* Mark this attribute as modified */
1051                         if ( old ) {
1052                                 a = attr_find( old->e_attrs, m->sml_desc );
1053                                 if ( a )
1054                                         a->a_flags = 1;
1055                         }
1056                         if ( m->sml_values ) {
1057                                 for (b=m->sml_values; !BER_BVISNULL( b ); b++,i++) {
1058                                         char c_op;
1059
1060                                         switch( m->sml_op ) {
1061                                         case LDAP_MOD_ADD: c_op = '+'; break;
1062                                         case LDAP_MOD_DELETE:   c_op = '-'; break;
1063                                         case LDAP_MOD_REPLACE:  c_op = '='; break;
1064                                         case LDAP_MOD_INCREMENT:        c_op = '#'; break;
1065
1066                                         /* unknown op. there shouldn't be any of these. we
1067                                          * don't know what to do with it, but we shouldn't just
1068                                          * ignore it.
1069                                          */
1070                                         default: c_op = '?'; break;
1071                                         }
1072                                         accesslog_val2val( m->sml_desc, b, c_op, &vals[i] );
1073                                 }
1074                         } else if ( m->sml_op == LDAP_MOD_DELETE ) {
1075                                 vals[i].bv_len = m->sml_desc->ad_cname.bv_len + 2;
1076                                 vals[i].bv_val = ch_malloc( vals[i].bv_len+1 );
1077                                 ptr = lutil_strcopy( vals[i].bv_val,
1078                                         m->sml_desc->ad_cname.bv_val );
1079                                 *ptr++ = ':';
1080                                 *ptr++ = '-';
1081                                 *ptr = '\0';
1082                                 i++;
1083                         }
1084                 }
1085                 vals[i].bv_val = NULL;
1086                 vals[i].bv_len = 0;
1087                 a = attr_alloc( ad_reqMod );
1088                 a->a_vals = vals;
1089                 a->a_nvals = vals;
1090                 last_attr->a_next = a;
1091
1092                 if ( old ) {
1093                         last_attr = a;
1094                         /* count all the vals */
1095                         i = 0;
1096                         for ( a=old->e_attrs; a; a=a->a_next ) {
1097                                 if ( a->a_vals && a->a_flags ) {
1098                                         for (b=a->a_vals; !BER_BVISNULL( b ); b++) {
1099                                         i++;
1100                                         }
1101                                 }
1102                         }
1103                         vals = ch_malloc( (i+1) * sizeof( struct berval ));
1104                         i = 0;
1105                         for ( a=old->e_attrs; a; a=a->a_next ) {
1106                                 if ( a->a_vals && a->a_flags ) {
1107                                         for (b=a->a_vals; !BER_BVISNULL( b ); b++,i++) {
1108                                                 accesslog_val2val( a->a_desc, b, 0, &vals[i] );
1109                                         }
1110                                 }
1111                         }
1112                         vals[i].bv_val = NULL;
1113                         vals[i].bv_len = 0;
1114                         a = attr_alloc( ad_reqOld );
1115                         a->a_vals = vals;
1116                         a->a_nvals = vals;
1117                         last_attr->a_next = a;
1118                 }
1119                 break;
1120
1121         case LOG_EN_MODRDN:
1122                 if ( old ) {
1123                         /* count all the vals */
1124                         i = 0;
1125                         for ( a=old->e_attrs; a; a=a->a_next ) {
1126                                 log_attr *la;
1127
1128                                 /* look for attrs that are always logged */
1129                                 for ( la=li->li_oldattrs; la; la=la->next ) {
1130                                         if ( a->a_desc == la->attr ) {
1131                                                 for (b=a->a_vals; !BER_BVISNULL( b ); b++) {
1132                                                         i++;
1133                                                 }
1134                                         }
1135                                 }
1136                         }
1137                         vals = ch_malloc( (i+1) * sizeof( struct berval ));
1138                         i = 0;
1139                         for ( a=old->e_attrs; a; a=a->a_next ) {
1140                                 log_attr *la;
1141                                 for ( la=li->li_oldattrs; la; la=la->next ) {
1142                                         if ( a->a_desc == la->attr ) {
1143                                                 for (b=a->a_vals; !BER_BVISNULL( b ); b++,i++) {
1144                                                         accesslog_val2val( a->a_desc, b, 0, &vals[i] );
1145                                                 }
1146                                         }
1147                                 }
1148                         }
1149                         vals[i].bv_val = NULL;
1150                         vals[i].bv_len = 0;
1151                         a = attr_alloc( ad_reqOld );
1152                         a->a_vals = vals;
1153                         a->a_nvals = vals;
1154                         last_attr->a_next = a;
1155                 }
1156                 attr_merge_one( e, ad_reqNewRDN, &op->orr_newrdn, &op->orr_nnewrdn );
1157                 attr_merge_one( e, ad_reqDeleteOldRDN, op->orr_deleteoldrdn ?
1158                         (struct berval *)&slap_true_bv : (struct berval *)&slap_false_bv,
1159                         NULL );
1160                 if ( op->orr_newSup ) {
1161                         attr_merge_one( e, ad_reqNewSuperior, op->orr_newSup, op->orr_nnewSup );
1162                 }
1163                 break;
1164
1165         case LOG_EN_COMPARE:
1166                 bv.bv_len = op->orc_ava->aa_desc->ad_cname.bv_len + 1 +
1167                         op->orc_ava->aa_value.bv_len;
1168                 bv.bv_val = op->o_tmpalloc( bv.bv_len+1, op->o_tmpmemctx );
1169                 ptr = lutil_strcopy( bv.bv_val, op->orc_ava->aa_desc->ad_cname.bv_val );
1170                 *ptr++ = '=';
1171                 AC_MEMCPY( ptr, op->orc_ava->aa_value.bv_val, op->orc_ava->aa_value.bv_len );
1172                 bv.bv_val[bv.bv_len] = '\0';
1173                 attr_merge_one( e, ad_reqAssertion, &bv, NULL );
1174                 op->o_tmpfree( bv.bv_val, op->o_tmpmemctx );
1175                 break;
1176
1177         case LOG_EN_SEARCH:
1178                 attr_merge_one( e, ad_reqScope, &scopes[op->ors_scope], NULL );
1179                 attr_merge_one( e, ad_reqDerefAliases, &derefs[op->ors_deref], NULL );
1180                 attr_merge_one( e, ad_reqAttrsOnly, op->ors_attrsonly ?
1181                         (struct berval *)&slap_true_bv : (struct berval *)&slap_false_bv,
1182                         NULL );
1183                 if ( !BER_BVISEMPTY( &op->ors_filterstr ))
1184                         attr_merge_one( e, ad_reqFilter, &op->ors_filterstr, NULL );
1185                 if ( op->ors_attrs ) {
1186                         /* count them */
1187                         for (i=0; !BER_BVISNULL(&op->ors_attrs[i].an_name );i++)
1188                                 ;
1189                         vals = op->o_tmpalloc( (i+1) * sizeof(struct berval),
1190                                 op->o_tmpmemctx );
1191                         for (i=0; !BER_BVISNULL(&op->ors_attrs[i].an_name );i++)
1192                                 vals[i] = op->ors_attrs[i].an_name;
1193                         vals[i].bv_val = NULL;
1194                         vals[i].bv_len = 0;
1195                         attr_merge( e, ad_reqAttr, vals, NULL );
1196                         op->o_tmpfree( vals, op->o_tmpmemctx );
1197                 }
1198                 bv.bv_val = timebuf;
1199                 bv.bv_len = sprintf( bv.bv_val, "%d", rs->sr_nentries );
1200                 attr_merge_one( e, ad_reqEntries, &bv, NULL );
1201
1202                 bv.bv_len = sprintf( bv.bv_val, "%d", op->ors_tlimit );
1203                 attr_merge_one( e, ad_reqTimeLimit, &bv, NULL );
1204
1205                 bv.bv_len = sprintf( bv.bv_val, "%d", op->ors_slimit );
1206                 attr_merge_one( e, ad_reqSizeLimit, &bv, NULL );
1207                 break;
1208
1209         case LOG_EN_BIND:
1210                 bv.bv_val = timebuf;
1211                 bv.bv_len = sprintf( bv.bv_val, "%d", op->o_protocol );
1212                 attr_merge_one( e, ad_reqVersion, &bv, NULL );
1213                 if ( op->orb_method == LDAP_AUTH_SIMPLE ) {
1214                         attr_merge_one( e, ad_reqMethod, &simple, NULL );
1215                 } else {
1216                         bv.bv_len = STRLENOF("SASL()") + op->orb_tmp_mech.bv_len;
1217                         bv.bv_val = op->o_tmpalloc( bv.bv_len + 1, op->o_tmpmemctx );
1218                         ptr = lutil_strcopy( bv.bv_val, "SASL(" );
1219                         ptr = lutil_strcopy( ptr, op->orb_tmp_mech.bv_val );
1220                         *ptr++ = ')';
1221                         *ptr = '\0';
1222                         attr_merge_one( e, ad_reqMethod, &bv, NULL );
1223                         op->o_tmpfree( bv.bv_val, op->o_tmpmemctx );
1224                 }
1225
1226                 break;
1227
1228         case LOG_EN_EXTENDED:
1229                 if ( op->ore_reqdata ) {
1230                         attr_merge_one( e, ad_reqData, op->ore_reqdata, NULL );
1231                 }
1232                 break;
1233
1234         case LOG_EN_UNKNOWN:
1235                 /* we don't know its parameters, don't add any */
1236                 break;
1237         }
1238
1239         op2.o_hdr = op->o_hdr;
1240         op2.o_tag = LDAP_REQ_ADD;
1241         op2.o_bd = li->li_db;
1242         op2.o_dn = li->li_db->be_rootdn;
1243         op2.o_ndn = li->li_db->be_rootndn;
1244         op2.o_req_dn = e->e_name;
1245         op2.o_req_ndn = e->e_nname;
1246         op2.ora_e = e;
1247         op2.o_callback = &nullsc;
1248
1249         if (( lo->mask & LOG_OP_WRITES ) && !BER_BVISEMPTY( &op->o_csn )) {
1250                 slap_queue_csn( &op2, &op->o_csn );
1251         }
1252
1253         op2.o_bd->be_add( &op2, &rs2 );
1254
1255 done:
1256         if ( lo->mask & LOG_OP_WRITES )
1257                 ldap_pvt_thread_mutex_unlock( &li->li_log_mutex );
1258         if ( e ) entry_free( e );
1259         if ( old ) entry_free( old );
1260         return SLAP_CB_CONTINUE;
1261 }
1262
1263 /* Since Bind success is sent by the frontend, it won't normally enter
1264  * the overlay response callback. Add another callback to make sure it
1265  * gets here.
1266  */
1267 static int
1268 accesslog_bind_resp( Operation *op, SlapReply *rs )
1269 {
1270         BackendDB *be, db;
1271         int rc;
1272         slap_callback *sc;
1273
1274         be = op->o_bd;
1275         db = *be;
1276         op->o_bd = &db;
1277         db.bd_info = op->o_callback->sc_private;
1278         rc = accesslog_response( op, rs );
1279         op->o_bd = be;
1280         sc = op->o_callback;
1281         op->o_callback = sc->sc_next;
1282         op->o_tmpfree( sc, op->o_tmpmemctx );
1283         return rc;
1284 }
1285
1286 static int
1287 accesslog_op_bind( Operation *op, SlapReply *rs )
1288 {
1289         slap_callback *sc;
1290
1291         sc = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1292         sc->sc_response = accesslog_bind_resp;
1293         sc->sc_private = op->o_bd->bd_info;
1294
1295         if ( op->o_callback ) {
1296                 sc->sc_next = op->o_callback->sc_next;
1297                 op->o_callback->sc_next = sc;
1298         } else {
1299                 op->o_callback = sc;
1300         }
1301         return SLAP_CB_CONTINUE;
1302 }
1303
1304 static int
1305 accesslog_op_mod( Operation *op, SlapReply *rs )
1306 {
1307         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1308         log_info *li = on->on_bi.bi_private;
1309
1310         if ( li->li_ops & LOG_OP_WRITES ) {
1311                 ldap_pvt_thread_rmutex_lock( &li->li_op_rmutex, op->o_tid );
1312                 if ( li->li_oldf && ( op->o_tag == LDAP_REQ_DELETE ||
1313                         op->o_tag == LDAP_REQ_MODIFY ||
1314                         ( op->o_tag == LDAP_REQ_MODRDN && li->li_oldattrs ))) {
1315                         int rc;
1316                         Entry *e;
1317
1318                         op->o_bd->bd_info = on->on_info->oi_orig;
1319                         rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1320                         if ( e ) {
1321                                 if ( test_filter( op, e, li->li_oldf ) == LDAP_COMPARE_TRUE )
1322                                         li->li_old = entry_dup( e );
1323                                 be_entry_release_rw( op, e, 0 );
1324                         }
1325                         op->o_bd->bd_info = (BackendInfo *)on;
1326                 }
1327         }
1328         return SLAP_CB_CONTINUE;
1329 }
1330
1331 /* unbinds are broadcast to all backends; we only log it if this
1332  * backend was used for the original bind.
1333  */
1334 static int
1335 accesslog_unbind( Operation *op, SlapReply *rs )
1336 {
1337         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1338         if ( op->o_conn->c_authz_backend == on->on_info->oi_origdb ) {
1339                 log_info *li = on->on_bi.bi_private;
1340                 Operation op2 = {0};
1341                 void *cids[SLAP_MAX_CIDS];
1342                 SlapReply rs2 = {REP_RESULT};
1343                 Entry *e;
1344
1345                 if ( !( li->li_ops & LOG_OP_UNBIND ))
1346                         return SLAP_CB_CONTINUE;
1347
1348                 e = accesslog_entry( op, LOG_EN_UNBIND, &op2 );
1349                 op2.o_hdr = op->o_hdr;
1350                 op2.o_tag = LDAP_REQ_ADD;
1351                 op2.o_bd = li->li_db;
1352                 op2.o_dn = li->li_db->be_rootdn;
1353                 op2.o_ndn = li->li_db->be_rootndn;
1354                 op2.o_req_dn = e->e_name;
1355                 op2.o_req_ndn = e->e_nname;
1356                 op2.ora_e = e;
1357                 op2.o_callback = &nullsc;
1358                 op2.o_controls = cids;
1359                 memset(cids, 0, sizeof( cids ));
1360
1361                 op2.o_bd->be_add( &op2, &rs2 );
1362                 entry_free( e );
1363         }
1364         return SLAP_CB_CONTINUE;
1365 }
1366
1367 static int
1368 accesslog_abandon( Operation *op, SlapReply *rs )
1369 {
1370         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1371         log_info *li = on->on_bi.bi_private;
1372         Operation op2 = {0};
1373         void *cids[SLAP_MAX_CIDS];
1374         SlapReply rs2 = {REP_RESULT};
1375         Entry *e;
1376         char buf[64];
1377         struct berval bv;
1378
1379         if ( !op->o_time || !( li->li_ops & LOG_OP_ABANDON ))
1380                 return SLAP_CB_CONTINUE;
1381
1382         e = accesslog_entry( op, LOG_EN_ABANDON, &op2 );
1383         bv.bv_val = buf;
1384         bv.bv_len = sprintf( buf, "%d", op->orn_msgid );
1385         attr_merge_one( e, ad_reqId, &bv, NULL );
1386
1387         op2.o_hdr = op->o_hdr;
1388         op2.o_tag = LDAP_REQ_ADD;
1389         op2.o_bd = li->li_db;
1390         op2.o_dn = li->li_db->be_rootdn;
1391         op2.o_ndn = li->li_db->be_rootndn;
1392         op2.o_req_dn = e->e_name;
1393         op2.o_req_ndn = e->e_nname;
1394         op2.ora_e = e;
1395         op2.o_callback = &nullsc;
1396         op2.o_controls = cids;
1397         memset(cids, 0, sizeof( cids ));
1398
1399         op2.o_bd->be_add( &op2, &rs2 );
1400         entry_free( e );
1401
1402         return SLAP_CB_CONTINUE;
1403 }
1404
1405 static slap_overinst accesslog;
1406
1407 static int
1408 accesslog_db_init(
1409         BackendDB *be
1410 )
1411 {
1412         slap_overinst *on = (slap_overinst *)be->bd_info;
1413         log_info *li = ch_calloc(1, sizeof(log_info));
1414
1415         on->on_bi.bi_private = li;
1416         ldap_pvt_thread_rmutex_init( &li->li_op_rmutex );
1417         ldap_pvt_thread_mutex_init( &li->li_log_mutex );
1418         return 0;
1419 }
1420
1421 static int
1422 accesslog_db_destroy(
1423         BackendDB *be
1424 )
1425 {
1426         slap_overinst *on = (slap_overinst *)be->bd_info;
1427         log_info *li = on->on_bi.bi_private;
1428
1429         ldap_pvt_thread_mutex_destroy( &li->li_log_mutex );
1430         ldap_pvt_thread_rmutex_destroy( &li->li_op_rmutex );
1431         free( li );
1432         return LDAP_SUCCESS;
1433 }
1434
1435 static int
1436 accesslog_db_open(
1437         BackendDB *be
1438 )
1439 {
1440         slap_overinst *on = (slap_overinst *)be->bd_info;
1441         log_info *li = on->on_bi.bi_private;
1442
1443         Connection conn;
1444         OperationBuffer opbuf;
1445         Operation *op = (Operation *) &opbuf;
1446         Entry *e;
1447         int rc;
1448         void *thrctx;
1449
1450         if ( li->li_db == NULL ) {
1451                 Debug( LDAP_DEBUG_ANY,
1452                         "accesslog: \"logdb <suffix>\" must be specified.\n",
1453                         0, 0, 0 );
1454                 return 1;
1455         }
1456
1457         if ( slapMode & SLAP_TOOL_MODE )
1458                 return 0;
1459
1460         thrctx = ldap_pvt_thread_pool_context();
1461         connection_fake_init( &conn, op, thrctx );
1462         op->o_bd = li->li_db;
1463         op->o_dn = li->li_db->be_rootdn;
1464         op->o_ndn = li->li_db->be_rootndn;
1465
1466         rc = be_entry_get_rw( op, li->li_db->be_nsuffix, NULL, NULL, 0, &e );
1467
1468         if ( e ) {
1469                 be_entry_release_rw( op, e, 0 );
1470         } else {
1471                 SlapReply rs = {REP_RESULT};
1472                 struct berval rdn, nrdn, attr;
1473                 char *ptr;
1474                 AttributeDescription *ad = NULL;
1475                 const char *text = NULL;
1476                 Entry *e_ctx;
1477
1478                 e = ch_calloc( 1, sizeof( Entry ));
1479                 e->e_name = *li->li_db->be_suffix;
1480                 e->e_nname = *li->li_db->be_nsuffix;
1481
1482                 attr_merge_one( e, slap_schema.si_ad_objectClass,
1483                         &log_container->soc_cname, NULL );
1484
1485                 dnRdn( &e->e_name, &rdn );
1486                 dnRdn( &e->e_nname, &nrdn );
1487                 ptr = ber_bvchr( &rdn, '=' );
1488
1489                 assert( ptr != NULL );
1490
1491                 attr.bv_val = rdn.bv_val;
1492                 attr.bv_len = ptr - rdn.bv_val;
1493
1494                 slap_bv2ad( &attr, &ad, &text );
1495
1496                 rdn.bv_val = ptr+1;
1497                 rdn.bv_len -= attr.bv_len + 1;
1498                 ptr = ber_bvchr( &nrdn, '=' );
1499                 nrdn.bv_len -= ptr - nrdn.bv_val + 1;
1500                 nrdn.bv_val = ptr+1;
1501                 attr_merge_one( e, ad, &rdn, &nrdn );
1502
1503                 /* Get contextCSN from main DB */
1504                 op->o_bd = be;
1505                 op->o_bd->bd_info = on->on_info->oi_orig;
1506                 rc = be_entry_get_rw( op, be->be_nsuffix, NULL,
1507                         slap_schema.si_ad_contextCSN, 0, &e_ctx );
1508
1509                 if ( e_ctx ) {
1510                         Attribute *a;
1511
1512                         a = attr_find( e_ctx->e_attrs, slap_schema.si_ad_contextCSN );
1513                         if ( a ) {
1514                                 attr_merge( e, slap_schema.si_ad_entryCSN, a->a_vals, NULL );
1515                                 attr_merge( e, a->a_desc, a->a_vals, NULL );
1516                         }
1517                         be_entry_release_rw( op, e_ctx, 0 );
1518                 }
1519                 op->o_bd->bd_info = (BackendInfo *)on;
1520                 op->o_bd = li->li_db;
1521
1522                 op->ora_e = e;
1523                 op->o_req_dn = e->e_name;
1524                 op->o_req_ndn = e->e_nname;
1525                 op->o_callback = &nullsc;
1526                 SLAP_DBFLAGS( op->o_bd ) |= SLAP_DBFLAG_NOLASTMOD;
1527                 rc = op->o_bd->be_add( op, &rs );
1528                 SLAP_DBFLAGS( op->o_bd ) ^= SLAP_DBFLAG_NOLASTMOD;
1529                 attrs_free( e->e_attrs );
1530                 ch_free( e );
1531         }
1532         ldap_pvt_thread_pool_context_reset( thrctx );
1533         return rc;
1534 }
1535
1536 int accesslog_initialize()
1537 {
1538         int i, rc;
1539
1540         accesslog.on_bi.bi_type = "accesslog";
1541         accesslog.on_bi.bi_db_init = accesslog_db_init;
1542         accesslog.on_bi.bi_db_destroy = accesslog_db_destroy;
1543         accesslog.on_bi.bi_db_open = accesslog_db_open;
1544
1545         accesslog.on_bi.bi_op_add = accesslog_op_mod;
1546         accesslog.on_bi.bi_op_bind = accesslog_op_bind;
1547         accesslog.on_bi.bi_op_delete = accesslog_op_mod;
1548         accesslog.on_bi.bi_op_modify = accesslog_op_mod;
1549         accesslog.on_bi.bi_op_modrdn = accesslog_op_mod;
1550         accesslog.on_bi.bi_op_unbind = accesslog_unbind;
1551         accesslog.on_bi.bi_op_abandon = accesslog_abandon;
1552         accesslog.on_response = accesslog_response;
1553
1554         accesslog.on_bi.bi_cf_ocs = log_cfocs;
1555
1556         nullsc.sc_response = slap_null_cb;
1557
1558         rc = config_register_schema( log_cfats, log_cfocs );
1559         if ( rc ) return rc;
1560
1561         /* log schema integration */
1562         for ( i=0; lattrs[i].at; i++ ) {
1563                 LDAPAttributeType *lat;
1564                 AttributeType *at;
1565                 int code;
1566                 const char *err;
1567
1568                 lat = ldap_str2attributetype( lattrs[i].at, &code, &err,
1569                         LDAP_SCHEMA_ALLOW_ALL );
1570                 if ( !lat ) {
1571                         Debug( LDAP_DEBUG_ANY, "accesslog_init: "
1572                                 "ldap_str2attributetype failed on %d: %s, %s\n",
1573                                 i, ldap_scherr2str(code), err );
1574                         return -1;
1575                 }
1576                 code = at_add( lat, 0, &at, &err );
1577                 ldap_memfree( lat );
1578                 if ( code ) {
1579                         Debug( LDAP_DEBUG_ANY, "log_back_initialize: "
1580                                 "at_add failed on %d: %s\n",
1581                                 i, scherr2str(code), 0 );
1582                         return -1;
1583                 }
1584                 if ( slap_bv2ad( &at->sat_cname, lattrs[i].ad, &err )) {
1585                         Debug( LDAP_DEBUG_ANY, "accesslog_init: "
1586                                 "slap_bv2ad failed on %d: %s\n",
1587                                 i, err, 0 );
1588                         return -1;
1589                 }
1590         }
1591         for ( i=0; locs[i].ot; i++ ) {
1592                 LDAPObjectClass *loc;
1593                 ObjectClass *oc;
1594                 int code;
1595                 const char *err;
1596
1597                 loc = ldap_str2objectclass( locs[i].ot, &code, &err,
1598                         LDAP_SCHEMA_ALLOW_ALL );
1599                 if ( !loc ) {
1600                         Debug( LDAP_DEBUG_ANY, "accesslog_init: "
1601                                 "ldap_str2objectclass failed on %d: %s, %s\n",
1602                                 i, ldap_scherr2str(code), err );
1603                         return -1;
1604                 }
1605                 
1606                 code = oc_add( loc, 0, &oc, &err );
1607                 ldap_memfree( loc );
1608                 if ( code ) {
1609                         Debug( LDAP_DEBUG_ANY, "accesslog_init: "
1610                                 "oc_add failed on %d: %s\n",
1611                                 i, scherr2str(code), 0 );
1612                         return -1;
1613                 }
1614                 if ( locs[i].oc )
1615                         *locs[i].oc = oc;
1616         }
1617
1618         return overlay_register(&accesslog);
1619 }
1620
1621 #if SLAPD_OVER_ACCESSLOG == SLAPD_MOD_DYNAMIC
1622 int
1623 init_module( int argc, char *argv[] )
1624 {
1625         return accesslog_initialize();
1626 }
1627 #endif
1628
1629 #endif /* SLAPD_OVER_ACCESSLOG */