2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 2003-2007 The OpenLDAP Foundation.
5 * Portions Copyright 2003 IBM Corporation.
6 * Portions Copyright 2003 Symas Corporation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
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>.
18 * This work was initially developed by Apurva Kumar for inclusion
19 * in OpenLDAP Software and subsequently rewritten by Howard Chu.
24 #ifdef SLAPD_OVER_PROXYCACHE
28 #include <ac/string.h>
40 * Control that allows to access the private DB
41 * instead of the public one
43 #define PCACHE_CONTROL_PRIVDB "1.3.6.1.4.1.4203.666.11.9.5.1"
46 * Extended Operation that allows to remove a query from the cache
48 #define PCACHE_EXOP_QUERY_DELETE "1.3.6.1.4.1.4203.666.11.9.6.1"
51 /* query cache structs */
54 typedef struct Query_s {
55 Filter* filter; /* Search Filter */
56 struct berval base; /* Search Base */
57 int scope; /* Search scope */
60 struct query_template_s;
62 typedef struct Qbase_s {
63 Avlnode *scopes[4]; /* threaded AVL trees of cached queries */
68 /* struct representing a cached query */
69 typedef struct cached_query_s {
74 struct berval q_uuid; /* query identifier */
76 struct query_template_s *qtemp; /* template of the query */
77 time_t expiry_time; /* time till the query is considered valid */
78 struct cached_query_s *next; /* next query in the template */
79 struct cached_query_s *prev; /* previous query in the template */
80 struct cached_query_s *lru_up; /* previous query in the LRU list */
81 struct cached_query_s *lru_down; /* next query in the LRU list */
82 ldap_pvt_thread_rdwr_t rwlock;
88 * ldap:///<base>??<scope>?<filter>?x-uuid=<uid>,x-template=<template>,x-attrset=<attrset>,x-expiry=<expiry>
90 * <base> ::= CachedQuery.qbase->base
91 * <scope> ::= CachedQuery.scope
92 * <filter> ::= filter2bv(CachedQuery.filter)
93 * <uuid> ::= CachedQuery.q_uuid
94 * <attrset> ::= CachedQuery.qtemp->attr_set_index
95 * <expiry> ::= CachedQuery.expiry_time
97 * quick hack: parse URI, call add_query() and then fix
98 * CachedQuery.expiry_time and CachedQuery.q_uuid
102 * Represents a set of projected attributes.
106 struct query_template_s *templates;
107 AttributeName* attrs; /* specifies the set */
109 #define PC_CONFIGURED (0x1)
110 #define PC_REFERENCED (0x2)
111 #define PC_GOT_OC (0x4)
112 int count; /* number of attributes */
115 /* struct representing a query template
116 * e.g. template string = &(cn=)(mail=)
118 typedef struct query_template_s {
119 struct query_template_s *qtnext;
120 struct query_template_s *qmnext;
123 CachedQuery* query; /* most recent query cached for the template */
124 CachedQuery* query_last; /* oldest query cached for the template */
125 ldap_pvt_thread_rdwr_t t_rwlock; /* Rd/wr lock for accessing queries in the template */
126 struct berval querystr; /* Filter string corresponding to the QT */
128 int attr_set_index; /* determines the projected attributes */
129 int no_of_queries; /* Total number of queries in the template */
130 time_t ttl; /* TTL for the queries of this template */
131 time_t negttl; /* TTL for negative results */
132 time_t limitttl; /* TTL for sizelimit exceeding results */
133 struct attr_set t_attrs; /* filter attrs + attr_set */
141 } pc_caching_reason_t;
143 static const char *pc_caching_reason_str[] = {
152 struct query_manager_s;
154 /* prototypes for functions for 1) query containment
155 * 2) query addition, 3) cache replacement
157 typedef CachedQuery *(QCfunc)(Operation *op, struct query_manager_s*,
158 Query*, QueryTemplate*);
159 typedef CachedQuery *(AddQueryfunc)(Operation *op, struct query_manager_s*,
160 Query*, QueryTemplate*, pc_caching_reason_t, int wlock);
161 typedef void (CRfunc)(struct query_manager_s*, struct berval*);
163 /* LDAP query cache */
164 typedef struct query_manager_s {
165 struct attr_set* attr_sets; /* possible sets of projected attributes */
166 QueryTemplate* templates; /* cacheable templates */
168 CachedQuery* lru_top; /* top and bottom of LRU list */
169 CachedQuery* lru_bottom;
171 ldap_pvt_thread_mutex_t lru_mutex; /* mutex for accessing LRU list */
173 /* Query cache methods */
174 QCfunc *qcfunc; /* Query containment*/
175 CRfunc *crfunc; /* cache replacement */
176 AddQueryfunc *addfunc; /* add query */
179 /* LDAP query cache manager */
180 typedef struct cache_manager_s {
181 BackendDB db; /* underlying database */
182 unsigned long num_cached_queries; /* total number of cached queries */
183 unsigned long max_queries; /* upper bound on # of cached queries */
184 int save_queries; /* save cached queries across restarts */
185 int numattrsets; /* number of attribute sets */
186 int cur_entries; /* current number of entries cached */
187 int max_entries; /* max number of entries cached */
188 int num_entries_limit; /* max # of entries in a cacheable query */
190 char response_cb; /* install the response callback
191 * at the tail of the callback list */
192 #define PCACHE_RESPONSE_CB_HEAD 0
193 #define PCACHE_RESPONSE_CB_TAIL 1
194 char defer_db_open; /* defer open for online add */
196 time_t cc_period; /* interval between successive consistency checks (sec) */
200 ldap_pvt_thread_mutex_t cache_mutex;
202 query_manager* qm; /* query cache managed by the cache manager */
205 static int pcache_debug;
207 #ifdef PCACHE_CONTROL_PRIVDB
208 static int privDB_cid;
209 #endif /* PCACHE_CONTROL_PRIVDB */
211 static AttributeDescription *ad_queryId, *ad_cachedQueryURL;
214 AttributeDescription **adp;
216 { "( 1.3.6.1.4.1.4203.666.11.9.1.1 "
218 "DESC 'ID of query the entry belongs to, formatted as a UUID' "
219 "EQUALITY octetStringMatch "
220 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.40{64} "
221 "NO-USER-MODIFICATION "
222 "USAGE directoryOperation )",
224 { "( 1.3.6.1.4.1.4203.666.11.9.1.2 "
225 "NAME 'cachedQueryURL' "
226 "DESC 'URI describing a cached query' "
227 "EQUALITY caseExactMatch "
228 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 "
229 "NO-USER-MODIFICATION "
230 "USAGE directoryOperation )",
231 &ad_cachedQueryURL },
240 AttributeName** filter_attrs,
242 int* filter_got_oc );
249 QueryTemplate *templ,
250 pc_caching_reason_t why,
257 struct berval *query_uuid );
260 * Turn a cached query into its URL representation
263 query2url( Operation *op, CachedQuery *q, struct berval *urlbv )
265 struct berval bv_scope,
267 char attrset_buf[ 32 ],
270 ber_len_t attrset_len,
273 ldap_pvt_scope2bv( q->scope, &bv_scope );
274 filter2bv_x( op, q->filter, &bv_filter );
275 attrset_len = snprintf( attrset_buf, sizeof( attrset_buf ),
276 "%lu", (unsigned long)q->qtemp->attr_set_index );
277 expiry_len = snprintf( expiry_buf, sizeof( expiry_buf ),
278 "%lu", (unsigned long)q->expiry_time );
280 urlbv->bv_len = STRLENOF( "ldap:///" )
281 + q->qbase->base.bv_len
286 + STRLENOF( "?x-uuid=" )
288 + STRLENOF( ",x-attrset=" )
290 + STRLENOF( ",x-expiry=" )
292 ptr = urlbv->bv_val = ber_memalloc_x( urlbv->bv_len + 1, op->o_tmpmemctx );
293 ptr = lutil_strcopy( ptr, "ldap:///" );
294 ptr = lutil_strcopy( ptr, q->qbase->base.bv_val );
295 ptr = lutil_strcopy( ptr, "??" );
296 ptr = lutil_strcopy( ptr, bv_scope.bv_val );
297 ptr = lutil_strcopy( ptr, "?" );
298 ptr = lutil_strcopy( ptr, bv_filter.bv_val );
299 ptr = lutil_strcopy( ptr, "?x-uuid=" );
300 ptr = lutil_strcopy( ptr, q->q_uuid.bv_val );
301 ptr = lutil_strcopy( ptr, ",x-attrset=" );
302 ptr = lutil_strcopy( ptr, attrset_buf );
303 ptr = lutil_strcopy( ptr, ",x-expiry=" );
304 ptr = lutil_strcopy( ptr, expiry_buf );
306 ber_memfree_x( bv_filter.bv_val, op->o_tmpmemctx );
312 * Turn an URL representing a formerly cached query into a cached query,
313 * and try to cache it
324 LDAPURLDesc *lud = NULL;
326 tempstr = BER_BVNULL,
336 rc = ldap_url_parse( url, &lud );
337 if ( rc != LDAP_URL_SUCCESS ) {
341 /* non-allowed fields */
342 if ( lud->lud_host != NULL ) {
347 if ( lud->lud_attrs != NULL ) {
353 if ( strcmp( lud->lud_scheme, "ldap" ) != 0 ) {
358 /* required fields */
359 if ( lud->lud_dn == NULL || lud->lud_dn[ 0 ] == '\0' ) {
364 switch ( lud->lud_scope ) {
365 case LDAP_SCOPE_BASE:
366 case LDAP_SCOPE_ONELEVEL:
367 case LDAP_SCOPE_SUBTREE:
368 case LDAP_SCOPE_SUBORDINATE:
376 if ( lud->lud_filter == NULL || lud->lud_filter[ 0 ] == '\0' ) {
381 if ( lud->lud_exts == NULL ) {
386 for ( i = 0; lud->lud_exts[ i ] != NULL; i++ ) {
387 if ( strncmp( lud->lud_exts[ i ], "x-uuid=", STRLENOF( "x-uuid=" ) ) == 0 ) {
388 struct berval tmpUUID;
389 Syntax *syn_UUID = slap_schema.si_ad_entryUUID->ad_type->sat_syntax;
391 ber_str2bv( &lud->lud_exts[ i ][ STRLENOF( "x-uuid=" ) ], 0, 0, &tmpUUID );
392 rc = syn_UUID->ssyn_pretty( syn_UUID, &tmpUUID, &uuid, NULL );
393 if ( rc != LDAP_SUCCESS ) {
398 } else if ( strncmp( lud->lud_exts[ i ], "x-attrset=", STRLENOF( "x-attrset=" ) ) == 0 ) {
399 rc = lutil_atoi( &attrset, &lud->lud_exts[ i ][ STRLENOF( "x-attrset=" ) ] );
405 } else if ( strncmp( lud->lud_exts[ i ], "x-expiry=", STRLENOF( "x-expiry=" ) ) == 0 ) {
408 rc = lutil_atoul( &l, &lud->lud_exts[ i ][ STRLENOF( "x-expiry=" ) ] );
412 expiry_time = (time_t)l;
426 if ( !got_attrset ) {
436 /* ignore expired queries */
437 if ( expiry_time <= slap_get_time()) {
439 SlapReply rs2 = { 0 };
441 memset( &op2.oq_search, 0, sizeof( op2.oq_search ) );
443 (void)remove_query_data( &op2, &rs2, &uuid );
448 ber_str2bv( lud->lud_dn, 0, 0, &base );
449 rc = dnNormalize( 0, NULL, NULL, &base, &query.base, NULL );
450 if ( rc != LDAP_SUCCESS ) {
453 query.scope = lud->lud_scope;
454 query.filter = str2filter( lud->lud_filter );
456 tempstr.bv_val = ch_malloc( strlen( lud->lud_filter ) + 1 );
458 if ( filter2template( op, query.filter, &tempstr, NULL, NULL, NULL ) ) {
459 ch_free( tempstr.bv_val );
464 /* check for query containment */
465 qt = qm->attr_sets[attrset].templates;
466 for ( ; qt; qt = qt->qtnext ) {
467 /* find if template i can potentially answer tempstr */
468 if ( bvmatch( &qt->querystr, &tempstr ) ) {
478 cq = add_query( op, qm, &query, qt, PC_POSITIVE, 0 );
480 cq->expiry_time = expiry_time;
483 /* it's now into cq->filter */
493 if ( query.filter != NULL ) filter_free( query.filter );
494 if ( !BER_BVISNULL( &tempstr ) ) ch_free( tempstr.bv_val );
495 if ( !BER_BVISNULL( &query.base ) ) ch_free( query.base.bv_val );
496 if ( !BER_BVISNULL( &uuid ) ) ch_free( uuid.bv_val );
497 if ( lud != NULL ) ldap_free_urldesc( lud );
502 /* Return 1 for an added entry, else 0 */
507 struct berval* query_uuid )
510 Modifications* modlist = NULL;
511 const char* text = NULL;
513 char textbuf[SLAP_TEXT_BUFLEN];
514 size_t textlen = sizeof(textbuf);
516 SlapReply sreply = {REP_RESULT};
518 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
523 /* add queryId attribute */
524 attr_merge_one( e, ad_queryId, query_uuid, NULL );
526 /* append the attribute list from the fetched entry */
527 e->e_attrs->a_next = attr;
529 op->o_tag = LDAP_REQ_ADD;
530 op->o_protocol = LDAP_VERSION3;
531 op->o_callback = &cb;
532 op->o_time = slap_get_time();
533 op->o_do_not_cache = 1;
536 op->o_req_dn = e->e_name;
537 op->o_req_ndn = e->e_nname;
538 rc = op->o_bd->be_add( op, &sreply );
540 if ( rc != LDAP_SUCCESS ) {
541 if ( rc == LDAP_ALREADY_EXISTS ) {
542 slap_entry2mods( e, &modlist, &text, textbuf, textlen );
543 modlist->sml_op = LDAP_MOD_ADD;
544 op->o_tag = LDAP_REQ_MODIFY;
545 op->orm_modlist = modlist;
546 op->o_bd->be_modify( op, &sreply );
547 slap_mods_free( modlist, 1 );
548 } else if ( rc == LDAP_REFERRAL ||
549 rc == LDAP_NO_SUCH_OBJECT ) {
550 syncrepl_add_glue( op, e );
559 if ( op->ora_e == e )
560 be_entry_release_w( op, e );
567 /* Length-ordered sort on normalized DNs */
568 static int pcache_dn_cmp( const void *v1, const void *v2 )
570 const Qbase *q1 = v1, *q2 = v2;
572 int rc = q1->base.bv_len - q2->base.bv_len;
574 rc = strncmp( q1->base.bv_val, q2->base.bv_val, q1->base.bv_len );
578 static int lex_bvcmp( struct berval *bv1, struct berval *bv2 )
581 dif = bv1->bv_len - bv2->bv_len;
583 if ( dif > 0 ) len -= dif;
584 len = memcmp( bv1->bv_val, bv2->bv_val, len );
590 /* compare the first value in each filter */
591 static int pcache_filter_cmp( const void *v1, const void *v2 )
593 const CachedQuery *q1 = v1, *q2 =v2;
594 int rc, weight1, weight2;
596 switch( q1->first->f_choice ) {
597 case LDAP_FILTER_PRESENT:
600 case LDAP_FILTER_EQUALITY:
608 switch( q2->first->f_choice ) {
609 case LDAP_FILTER_PRESENT:
612 case LDAP_FILTER_EQUALITY:
620 rc = weight1 - weight2;
625 rc = lex_bvcmp( &q1->first->f_av_value, &q2->first->f_av_value );
628 if ( q1->first->f_choice == LDAP_FILTER_SUBSTRINGS ) {
630 if ( !BER_BVISNULL( &q1->first->f_sub_initial )) {
631 if ( !BER_BVISNULL( &q2->first->f_sub_initial )) {
632 rc = lex_bvcmp( &q1->first->f_sub_initial,
633 &q2->first->f_sub_initial );
637 } else if ( !BER_BVISNULL( &q2->first->f_sub_initial )) {
641 if ( q1->first->f_sub_any ) {
642 if ( q2->first->f_sub_any ) {
643 rc = lex_bvcmp( q1->first->f_sub_any,
644 q2->first->f_sub_any );
648 } else if ( q2->first->f_sub_any ) {
652 if ( !BER_BVISNULL( &q1->first->f_sub_final )) {
653 if ( !BER_BVISNULL( &q2->first->f_sub_final )) {
654 rc = lex_bvcmp( &q1->first->f_sub_final,
655 &q2->first->f_sub_final );
659 } else if ( !BER_BVISNULL( &q2->first->f_sub_final )) {
663 rc = lex_bvcmp( &q1->first->f_mr_value,
664 &q2->first->f_mr_value );
673 /* add query on top of LRU list */
675 add_query_on_top (query_manager* qm, CachedQuery* qc)
677 CachedQuery* top = qm->lru_top;
688 Debug( pcache_debug, "Base of added query = %s\n",
689 qc->qbase->base.bv_val, 0, 0 );
692 /* remove_query from LRU list */
695 remove_query (query_manager* qm, CachedQuery* qc)
718 qc->lru_up = qc->lru_down = NULL;
721 /* find and remove string2 from string1
722 * from start if position = 1,
723 * from end if position = 3,
724 * from anywhere if position = 2
725 * string1 is overwritten if position = 2.
729 find_and_remove(struct berval* ber1, struct berval* ber2, int position)
740 if ( ber1->bv_len >= ber2->bv_len && !memcmp( ber1->bv_val,
741 ber2->bv_val, ber2->bv_len )) {
743 ber1->bv_val += ber2->bv_len;
744 ber1->bv_len -= ber2->bv_len;
749 ber1->bv_val[ber1->bv_len] = '\0';
750 temp = strstr( ber1->bv_val, ber2->bv_val );
752 strcpy( temp, temp+ber2->bv_len );
753 ber1->bv_len -= ber2->bv_len;
759 if ( ber1->bv_len >= ber2->bv_len &&
760 !memcmp( ber1->bv_val+ber1->bv_len-ber2->bv_len, ber2->bv_val,
763 ber1->bv_len -= ber2->bv_len;
771 static struct berval*
772 merge_init_final(Operation *op, struct berval* init, struct berval* any,
773 struct berval* final)
775 struct berval* merged, *temp;
776 int i, any_count, count;
778 for (any_count=0; any && any[any_count].bv_val; any_count++)
788 merged = (struct berval*)op->o_tmpalloc( (count+1)*sizeof(struct berval),
793 ber_dupbv_x( temp, init, op->o_tmpmemctx );
797 for (i=0; i<any_count; i++) {
798 ber_dupbv_x( temp, any, op->o_tmpmemctx );
803 ber_dupbv_x( temp, final, op->o_tmpmemctx );
810 /* Each element in stored must be found in incoming. Incoming is overwritten.
813 strings_containment(struct berval* stored, struct berval* incoming)
815 struct berval* element;
819 for ( element=stored; element->bv_val != NULL; element++ ) {
820 for (j = k; incoming[j].bv_val != NULL; j++) {
821 if (find_and_remove(&(incoming[j]), element, 2)) {
838 substr_containment_substr(Operation *op, Filter* stored, Filter* incoming)
842 struct berval init_incoming;
843 struct berval final_incoming;
844 struct berval *remaining_incoming = NULL;
846 if ((!(incoming->f_sub_initial.bv_val) && (stored->f_sub_initial.bv_val))
847 || (!(incoming->f_sub_final.bv_val) && (stored->f_sub_final.bv_val)))
850 init_incoming = incoming->f_sub_initial;
851 final_incoming = incoming->f_sub_final;
853 if (find_and_remove(&init_incoming,
854 &(stored->f_sub_initial), 1) && find_and_remove(&final_incoming,
855 &(stored->f_sub_final), 3))
857 if (stored->f_sub_any == NULL) {
861 remaining_incoming = merge_init_final(op, &init_incoming,
862 incoming->f_sub_any, &final_incoming);
863 rc = strings_containment(stored->f_sub_any, remaining_incoming);
864 ber_bvarray_free_x( remaining_incoming, op->o_tmpmemctx );
871 substr_containment_equality(Operation *op, Filter* stored, Filter* incoming)
873 struct berval incoming_val[2];
876 incoming_val[1] = incoming->f_av_value;
878 if (find_and_remove(incoming_val+1,
879 &(stored->f_sub_initial), 1) && find_and_remove(incoming_val+1,
880 &(stored->f_sub_final), 3)) {
881 if (stored->f_sub_any == NULL){
885 ber_dupbv_x( incoming_val, incoming_val+1, op->o_tmpmemctx );
886 BER_BVZERO( incoming_val+1 );
887 rc = strings_containment(stored->f_sub_any, incoming_val);
888 op->o_tmpfree( incoming_val[0].bv_val, op->o_tmpmemctx );
895 filter_first( Filter *f )
897 while ( f->f_choice == LDAP_FILTER_OR || f->f_choice == LDAP_FILTER_AND )
904 find_filter( Operation *op, Avlnode *root, Filter *inputf, Filter *first )
908 MatchingRule* mrule = NULL;
909 int res=0, eqpass= 0;
917 /* substring matches sort to the end, and we just have to
918 * walk the entire list.
920 if ( first->f_choice == LDAP_FILTER_SUBSTRINGS ) {
921 ptr = tavl_end( root, 1 );
924 ptr = tavl_find3( root, &cq, pcache_filter_cmp, &ret );
925 dir = (first->f_choice == LDAP_FILTER_GE) ? TAVL_DIR_LEFT :
934 /* an incoming substr query can only be satisfied by a cached
937 if ( first->f_choice == LDAP_FILTER_SUBSTRINGS &&
938 qc->first->f_choice != LDAP_FILTER_SUBSTRINGS )
941 /* an incoming eq query can be satisfied by a cached eq or substr
944 if ( first->f_choice == LDAP_FILTER_EQUALITY ) {
946 if ( qc->first->f_choice != LDAP_FILTER_EQUALITY ) {
947 nextpass: eqpass = 1;
948 ptr = tavl_end( root, 1 );
953 if ( qc->first->f_choice != LDAP_FILTER_SUBSTRINGS )
959 switch (fs->f_choice) {
960 case LDAP_FILTER_EQUALITY:
961 if (fi->f_choice == LDAP_FILTER_EQUALITY)
962 mrule = fs->f_ava->aa_desc->ad_type->sat_equality;
968 mrule = fs->f_ava->aa_desc->ad_type->sat_ordering;
975 rc = value_match(&ret, fs->f_ava->aa_desc, mrule,
976 SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
977 &(fi->f_ava->aa_value),
978 &(fs->f_ava->aa_value), &text);
979 if (rc != LDAP_SUCCESS) {
982 if ( fi==first && fi->f_choice==LDAP_FILTER_EQUALITY && ret )
985 switch (fs->f_choice) {
987 case LDAP_FILTER_AND:
992 case LDAP_FILTER_SUBSTRINGS:
993 /* check if the equality query can be
994 * answered with cached substring query */
995 if ((fi->f_choice == LDAP_FILTER_EQUALITY)
996 && substr_containment_equality( op,
999 /* check if the substring query can be
1000 * answered with cached substring query */
1001 if ((fi->f_choice ==LDAP_FILTER_SUBSTRINGS
1002 ) && substr_containment_substr( op,
1008 case LDAP_FILTER_PRESENT:
1013 case LDAP_FILTER_EQUALITY:
1019 case LDAP_FILTER_GE:
1020 if (mrule && ret >= 0)
1025 case LDAP_FILTER_LE:
1026 if (mrule && ret <= 0)
1031 case LDAP_FILTER_NOT:
1037 } while((res) && (fi != NULL) && (fs != NULL));
1041 ptr = tavl_next( ptr, dir );
1046 /* check whether query is contained in any of
1047 * the cached queries in template
1049 static CachedQuery *
1050 query_containment(Operation *op, query_manager *qm,
1052 QueryTemplate *templa)
1055 int depth = 0, tscope;
1056 Qbase qbase, *qbptr = NULL;
1059 if (query->filter != NULL) {
1062 Debug( pcache_debug, "Lock QC index = %p\n",
1063 (void *) templa, 0, 0 );
1064 qbase.base = query->base;
1066 first = filter_first( query->filter );
1068 ldap_pvt_thread_rdwr_rlock(&templa->t_rwlock);
1071 qbptr = avl_find( templa->qbase, &qbase, pcache_dn_cmp );
1073 tscope = query->scope;
1074 /* Find a matching scope:
1075 * match at depth 0 OK
1078 * subord at depth > 0 OK
1079 * subtree at any depth OK
1081 * subtree or subord at any depth OK
1083 * subtree or subord at any depth OK
1085 * subord at depth > 0 OK
1086 * subtree at any depth OK
1088 for ( tscope = 0 ; tscope <= LDAP_SCOPE_CHILDREN; tscope++ ) {
1089 switch ( query->scope ) {
1090 case LDAP_SCOPE_BASE:
1091 if ( tscope == LDAP_SCOPE_BASE && depth ) continue;
1092 if ( tscope == LDAP_SCOPE_ONE && depth != 1) continue;
1093 if ( tscope == LDAP_SCOPE_CHILDREN && !depth ) continue;
1095 case LDAP_SCOPE_ONE:
1096 if ( tscope == LDAP_SCOPE_BASE )
1097 tscope = LDAP_SCOPE_ONE;
1098 if ( tscope == LDAP_SCOPE_ONE && depth ) continue;
1099 if ( !depth ) break;
1100 if ( tscope < LDAP_SCOPE_SUBTREE )
1101 tscope = LDAP_SCOPE_SUBTREE;
1103 case LDAP_SCOPE_SUBTREE:
1104 if ( tscope < LDAP_SCOPE_SUBTREE )
1105 tscope = LDAP_SCOPE_SUBTREE;
1106 if ( tscope == LDAP_SCOPE_CHILDREN && !depth ) continue;
1108 case LDAP_SCOPE_CHILDREN:
1109 if ( tscope < LDAP_SCOPE_SUBTREE )
1110 tscope = LDAP_SCOPE_SUBTREE;
1113 if ( !qbptr->scopes[tscope] ) continue;
1116 qc = find_filter( op, qbptr->scopes[tscope],
1117 query->filter, first );
1119 if ( qc->q_sizelimit ) {
1120 ldap_pvt_thread_rdwr_runlock(&templa->t_rwlock);
1123 ldap_pvt_thread_mutex_lock(&qm->lru_mutex);
1124 if (qm->lru_top != qc) {
1125 remove_query(qm, qc);
1126 add_query_on_top(qm, qc);
1128 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
1133 if ( be_issuffix( op->o_bd, &qbase.base ))
1136 dnParent( &qbase.base, &pdn );
1141 Debug( pcache_debug,
1142 "Not answerable: Unlock QC index=%p\n",
1143 (void *) templa, 0, 0 );
1144 ldap_pvt_thread_rdwr_runlock(&templa->t_rwlock);
1150 free_query (CachedQuery* qc)
1152 free(qc->q_uuid.bv_val);
1153 filter_free(qc->filter);
1158 /* Add query to query cache, the returned Query is locked for writing */
1159 static CachedQuery *
1164 QueryTemplate *templ,
1165 pc_caching_reason_t why,
1168 CachedQuery* new_cached_query = (CachedQuery*) ch_malloc(sizeof(CachedQuery));
1174 new_cached_query->qtemp = templ;
1175 BER_BVZERO( &new_cached_query->q_uuid );
1176 new_cached_query->q_sizelimit = 0;
1184 ttl = templ->negttl;
1188 ttl = templ->limitttl;
1195 new_cached_query->expiry_time = slap_get_time() + ttl;
1196 new_cached_query->lru_up = NULL;
1197 new_cached_query->lru_down = NULL;
1198 Debug( pcache_debug, "Added query expires at %ld (%s)\n",
1199 (long) new_cached_query->expiry_time,
1200 pc_caching_reason_str[ why ], 0 );
1202 new_cached_query->scope = query->scope;
1203 new_cached_query->filter = query->filter;
1204 new_cached_query->first = first = filter_first( query->filter );
1206 ldap_pvt_thread_rdwr_init(&new_cached_query->rwlock);
1208 ldap_pvt_thread_rdwr_wlock(&new_cached_query->rwlock);
1210 qb.base = query->base;
1212 /* Adding a query */
1213 Debug( pcache_debug, "Lock AQ index = %p\n",
1214 (void *) templ, 0, 0 );
1215 ldap_pvt_thread_rdwr_wlock(&templ->t_rwlock);
1216 qbase = avl_find( templ->qbase, &qb, pcache_dn_cmp );
1218 qbase = ch_calloc( 1, sizeof(Qbase) + qb.base.bv_len + 1 );
1219 qbase->base.bv_len = qb.base.bv_len;
1220 qbase->base.bv_val = (char *)(qbase+1);
1221 memcpy( qbase->base.bv_val, qb.base.bv_val, qb.base.bv_len );
1222 qbase->base.bv_val[qbase->base.bv_len] = '\0';
1223 avl_insert( &templ->qbase, qbase, pcache_dn_cmp, avl_dup_error );
1225 new_cached_query->next = templ->query;
1226 new_cached_query->prev = NULL;
1227 new_cached_query->qbase = qbase;
1228 rc = tavl_insert( &qbase->scopes[query->scope], new_cached_query,
1229 pcache_filter_cmp, avl_dup_error );
1232 if (templ->query == NULL)
1233 templ->query_last = new_cached_query;
1235 templ->query->prev = new_cached_query;
1236 templ->query = new_cached_query;
1237 templ->no_of_queries++;
1239 ch_free( new_cached_query );
1240 new_cached_query = find_filter( op, qbase->scopes[query->scope],
1241 query->filter, first );
1242 filter_free( query->filter );
1244 Debug( pcache_debug, "TEMPLATE %p QUERIES++ %d\n",
1245 (void *) templ, templ->no_of_queries, 0 );
1247 Debug( pcache_debug, "Unlock AQ index = %p \n",
1248 (void *) templ, 0, 0 );
1249 ldap_pvt_thread_rdwr_wunlock(&templ->t_rwlock);
1251 /* Adding on top of LRU list */
1253 ldap_pvt_thread_mutex_lock(&qm->lru_mutex);
1254 add_query_on_top(qm, new_cached_query);
1255 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
1257 return rc == 0 ? new_cached_query : NULL;
1261 remove_from_template (CachedQuery* qc, QueryTemplate* template)
1263 if (!qc->prev && !qc->next) {
1264 template->query_last = template->query = NULL;
1265 } else if (qc->prev == NULL) {
1266 qc->next->prev = NULL;
1267 template->query = qc->next;
1268 } else if (qc->next == NULL) {
1269 qc->prev->next = NULL;
1270 template->query_last = qc->prev;
1272 qc->next->prev = qc->prev;
1273 qc->prev->next = qc->next;
1275 tavl_delete( &qc->qbase->scopes[qc->scope], qc, pcache_filter_cmp );
1276 qc->qbase->queries--;
1277 if ( qc->qbase->queries == 0 ) {
1278 avl_delete( &template->qbase, qc->qbase, pcache_dn_cmp );
1279 ch_free( qc->qbase );
1283 template->no_of_queries--;
1286 /* remove bottom query of LRU list from the query cache */
1288 * NOTE: slight change in functionality.
1290 * - if result->bv_val is NULL, the query at the bottom of the LRU
1292 * - otherwise, the query whose UUID is *result is removed
1293 * - if not found, result->bv_val is zeroed
1296 cache_replacement(query_manager* qm, struct berval *result)
1298 CachedQuery* bottom;
1299 QueryTemplate *temp;
1301 ldap_pvt_thread_mutex_lock(&qm->lru_mutex);
1302 if ( BER_BVISNULL( result ) ) {
1303 bottom = qm->lru_bottom;
1306 Debug ( pcache_debug,
1307 "Cache replacement invoked without "
1308 "any query in LRU list\n", 0, 0, 0 );
1309 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
1314 for ( bottom = qm->lru_bottom;
1316 bottom = bottom->lru_up )
1318 if ( bvmatch( result, &bottom->q_uuid ) ) {
1324 Debug ( pcache_debug,
1325 "Could not find query with uuid=\"%s\""
1326 "in LRU list\n", result->bv_val, 0, 0 );
1327 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
1328 BER_BVZERO( result );
1333 temp = bottom->qtemp;
1334 remove_query(qm, bottom);
1335 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
1337 *result = bottom->q_uuid;
1338 BER_BVZERO( &bottom->q_uuid );
1340 Debug( pcache_debug, "Lock CR index = %p\n", (void *) temp, 0, 0 );
1341 ldap_pvt_thread_rdwr_wlock(&temp->t_rwlock);
1342 remove_from_template(bottom, temp);
1343 Debug( pcache_debug, "TEMPLATE %p QUERIES-- %d\n",
1344 (void *) temp, temp->no_of_queries, 0 );
1345 Debug( pcache_debug, "Unlock CR index = %p\n", (void *) temp, 0, 0 );
1346 ldap_pvt_thread_rdwr_wunlock(&temp->t_rwlock);
1351 struct query_info *next;
1363 struct query_info *qi;
1366 if ( rs->sr_type != REP_SEARCH ) return 0;
1368 attr = attr_find( rs->sr_entry->e_attrs, ad_queryId );
1369 if ( attr == NULL ) return 0;
1371 count = attr->a_numvals;
1372 assert( count > 0 );
1373 qi = op->o_tmpalloc( sizeof( struct query_info ), op->o_tmpmemctx );
1374 qi->next = op->o_callback->sc_private;
1375 op->o_callback->sc_private = qi;
1376 ber_dupbv_x( &qi->xdn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
1377 qi->del = ( count == 1 );
1386 struct berval *query_uuid )
1388 struct query_info *qi, *qnext;
1389 char filter_str[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(queryId=)" ) ];
1390 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
1391 Filter filter = {LDAP_FILTER_EQUALITY};
1392 SlapReply sreply = {REP_RESULT};
1393 slap_callback cb = { NULL, remove_func, NULL, NULL };
1396 sreply.sr_entry = NULL;
1397 sreply.sr_nentries = 0;
1398 op->ors_filterstr.bv_len = snprintf(filter_str, sizeof(filter_str),
1399 "(%s=%s)", ad_queryId->ad_cname.bv_val, query_uuid->bv_val);
1400 filter.f_ava = &ava;
1401 filter.f_av_desc = ad_queryId;
1402 filter.f_av_value = *query_uuid;
1404 op->o_tag = LDAP_REQ_SEARCH;
1405 op->o_protocol = LDAP_VERSION3;
1406 op->o_callback = &cb;
1407 op->o_time = slap_get_time();
1408 op->o_do_not_cache = 1;
1410 op->o_req_dn = op->o_bd->be_suffix[0];
1411 op->o_req_ndn = op->o_bd->be_nsuffix[0];
1412 op->ors_scope = LDAP_SCOPE_SUBTREE;
1413 op->ors_deref = LDAP_DEREF_NEVER;
1414 op->ors_slimit = SLAP_NO_LIMIT;
1415 op->ors_tlimit = SLAP_NO_LIMIT;
1416 op->ors_filter = &filter;
1417 op->ors_filterstr.bv_val = filter_str;
1418 op->ors_filterstr.bv_len = strlen(filter_str);
1419 op->ors_attrs = NULL;
1420 op->ors_attrsonly = 0;
1422 op->o_bd->be_search( op, &sreply );
1424 for ( qi=cb.sc_private; qi; qi=qnext ) {
1427 op->o_req_dn = qi->xdn;
1428 op->o_req_ndn = qi->xdn;
1431 Debug( pcache_debug, "DELETING ENTRY TEMPLATE=%s\n",
1432 query_uuid->bv_val, 0, 0 );
1434 op->o_tag = LDAP_REQ_DELETE;
1436 if (op->o_bd->be_delete(op, &sreply) == LDAP_SUCCESS) {
1442 struct berval vals[2];
1444 vals[0] = *query_uuid;
1445 vals[1].bv_val = NULL;
1447 mod.sml_op = LDAP_MOD_DELETE;
1449 mod.sml_desc = ad_queryId;
1450 mod.sml_type = ad_queryId->ad_cname;
1451 mod.sml_values = vals;
1452 mod.sml_nvalues = NULL;
1453 mod.sml_numvals = 1;
1454 mod.sml_next = NULL;
1455 Debug( pcache_debug,
1456 "REMOVING TEMP ATTR : TEMPLATE=%s\n",
1457 query_uuid->bv_val, 0, 0 );
1459 op->orm_modlist = &mod;
1461 op->o_bd->be_modify( op, &sreply );
1463 op->o_tmpfree( qi->xdn.bv_val, op->o_tmpmemctx );
1464 op->o_tmpfree( qi, op->o_tmpmemctx );
1471 AttributeName* attrs,
1480 struct berval *fstr,
1481 AttributeName** filter_attrs,
1483 int* filter_got_oc )
1485 AttributeDescription *ad;
1487 switch ( f->f_choice ) {
1488 case LDAP_FILTER_EQUALITY:
1490 sprintf( fstr->bv_val+fstr->bv_len, "(%s=)", ad->ad_cname.bv_val );
1491 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=)") - 1 );
1494 case LDAP_FILTER_GE:
1496 sprintf( fstr->bv_val+fstr->bv_len, "(%s>=)", ad->ad_cname.bv_val);
1497 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(>=)") - 1 );
1500 case LDAP_FILTER_LE:
1502 sprintf( fstr->bv_val+fstr->bv_len, "(%s<=)", ad->ad_cname.bv_val);
1503 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(<=)") - 1 );
1506 case LDAP_FILTER_APPROX:
1508 sprintf( fstr->bv_val+fstr->bv_len, "(%s~=)", ad->ad_cname.bv_val);
1509 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(~=)") - 1 );
1512 case LDAP_FILTER_SUBSTRINGS:
1514 sprintf( fstr->bv_val+fstr->bv_len, "(%s=)", ad->ad_cname.bv_val );
1515 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=)") - 1 );
1518 case LDAP_FILTER_PRESENT:
1520 sprintf( fstr->bv_val+fstr->bv_len, "(%s=*)", ad->ad_cname.bv_val );
1521 fstr->bv_len += ad->ad_cname.bv_len + ( sizeof("(=*)") - 1 );
1524 case LDAP_FILTER_AND:
1525 case LDAP_FILTER_OR:
1526 case LDAP_FILTER_NOT: {
1528 sprintf( fstr->bv_val+fstr->bv_len, "(%c",
1529 f->f_choice == LDAP_FILTER_AND ? '&' :
1530 f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
1531 fstr->bv_len += sizeof("(%") - 1;
1533 for ( f = f->f_list; f != NULL; f = f->f_next ) {
1534 rc = filter2template( op, f, fstr, filter_attrs, filter_cnt,
1538 sprintf( fstr->bv_val+fstr->bv_len, ")" );
1539 fstr->bv_len += sizeof(")") - 1;
1545 strcpy( fstr->bv_val, "(?=?)" );
1546 fstr->bv_len += sizeof("(?=?)")-1;
1550 if ( filter_attrs != NULL ) {
1551 *filter_attrs = (AttributeName *)op->o_tmprealloc(*filter_attrs,
1552 (*filter_cnt + 2)*sizeof(AttributeName), op->o_tmpmemctx);
1554 (*filter_attrs)[*filter_cnt].an_desc = ad;
1555 (*filter_attrs)[*filter_cnt].an_name = ad->ad_cname;
1556 (*filter_attrs)[*filter_cnt].an_oc = NULL;
1557 (*filter_attrs)[*filter_cnt].an_oc_exclude = 0;
1558 BER_BVZERO( &(*filter_attrs)[*filter_cnt+1].an_name );
1560 if ( ad == slap_schema.si_ad_objectClass )
1567 struct search_info {
1570 QueryTemplate *qtemp;
1571 AttributeName* save_attrs; /* original attributes, saved for response */
1576 int slimit_exceeded;
1577 pc_caching_reason_t caching_reason;
1582 remove_query_and_data(
1586 struct berval *uuid )
1588 query_manager* qm = cm->qm;
1590 qm->crfunc( qm, uuid );
1591 if ( !BER_BVISNULL( uuid ) ) {
1594 Debug( pcache_debug,
1595 "Removing query UUID %s\n",
1596 uuid->bv_val, 0, 0 );
1597 return_val = remove_query_data( op, rs, uuid );
1598 Debug( pcache_debug,
1599 "QUERY REMOVED, SIZE=%d\n",
1601 ldap_pvt_thread_mutex_lock( &cm->cache_mutex );
1602 cm->cur_entries -= return_val;
1603 cm->num_cached_queries--;
1604 Debug( pcache_debug,
1605 "STORED QUERIES = %lu\n",
1606 cm->num_cached_queries, 0, 0 );
1607 ldap_pvt_thread_mutex_unlock( &cm->cache_mutex );
1608 Debug( pcache_debug,
1609 "QUERY REMOVED, CACHE ="
1611 cm->cur_entries, 0, 0 );
1616 * Callback used to fetch queryId values based on entryUUID;
1617 * used by pcache_remove_entries_from_cache()
1620 fetch_queryId_cb( Operation *op, SlapReply *rs )
1624 /* only care about searchEntry responses */
1625 if ( rs->sr_type != REP_SEARCH ) {
1629 /* allow only one response per entryUUID */
1630 if ( op->o_callback->sc_private != NULL ) {
1636 /* copy all queryId values into callback's private data */
1637 a = attr_find( rs->sr_entry->e_attrs, ad_queryId );
1639 BerVarray vals = NULL;
1641 ber_bvarray_dup_x( &vals, a->a_nvals, op->o_tmpmemctx );
1642 op->o_callback->sc_private = (void *)vals;
1646 /* clear entry if required */
1647 if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
1648 entry_free( rs->sr_entry );
1649 rs->sr_entry = NULL;
1650 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
1657 * Call that allows to remove a set of entries from the cache,
1658 * by forcing the removal of all the related queries.
1661 pcache_remove_entries_from_cache(
1664 BerVarray entryUUIDs )
1666 Connection conn = { 0 };
1667 OperationBuffer opbuf;
1669 slap_callback sc = { 0 };
1670 SlapReply rs = { REP_RESULT };
1672 char filtbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(entryUUID=)" ) ];
1673 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
1674 AttributeName attrs[ 2 ] = { 0 };
1678 void *thrctx = ldap_pvt_thread_pool_context();
1680 connection_fake_init( &conn, &opbuf, thrctx );
1688 memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1689 op->ors_scope = LDAP_SCOPE_SUBTREE;
1690 op->ors_deref = LDAP_DEREF_NEVER;
1691 f.f_choice = LDAP_FILTER_EQUALITY;
1693 ava.aa_desc = slap_schema.si_ad_entryUUID;
1694 op->ors_filter = &f;
1696 op->ors_tlimit = SLAP_NO_LIMIT;
1697 attrs[ 0 ].an_desc = ad_queryId;
1698 attrs[ 0 ].an_name = ad_queryId->ad_cname;
1699 op->ors_attrs = attrs;
1700 op->ors_attrsonly = 0;
1702 op->o_req_dn = cm->db.be_suffix[ 0 ];
1703 op->o_req_ndn = cm->db.be_nsuffix[ 0 ];
1705 op->o_tag = LDAP_REQ_SEARCH;
1706 op->o_protocol = LDAP_VERSION3;
1707 op->o_managedsait = SLAP_CONTROL_CRITICAL;
1709 op->o_dn = op->o_bd->be_rootdn;
1710 op->o_ndn = op->o_bd->be_rootndn;
1711 sc.sc_response = fetch_queryId_cb;
1712 op->o_callback = ≻
1714 for ( s = 0; !BER_BVISNULL( &entryUUIDs[ s ] ); s++ ) {
1715 BerVarray vals = NULL;
1717 op->ors_filterstr.bv_len = snprintf( filtbuf, sizeof( filtbuf ),
1718 "(entryUUID=%s)", entryUUIDs[ s ].bv_val );
1719 op->ors_filterstr.bv_val = filtbuf;
1720 ava.aa_value = entryUUIDs[ s ];
1722 rc = op->o_bd->be_search( op, &rs );
1723 if ( rc != LDAP_SUCCESS ) {
1727 vals = (BerVarray)op->o_callback->sc_private;
1728 if ( vals != NULL ) {
1731 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1732 struct berval val = vals[ i ];
1734 remove_query_and_data( op, &rs, cm, &val );
1736 if ( !BER_BVISNULL( &val ) && val.bv_val != vals[ i ].bv_val ) {
1737 ch_free( val.bv_val );
1741 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1742 op->o_callback->sc_private = NULL;
1750 * Call that allows to remove a query from the cache.
1753 pcache_remove_query_from_cache(
1756 struct berval *queryid )
1758 Operation op2 = *op;
1759 SlapReply rs2 = { 0 };
1763 /* remove the selected query */
1764 remove_query_and_data( &op2, &rs2, cm, queryid );
1766 return LDAP_SUCCESS;
1770 * Call that allows to remove a set of queries related to an entry
1771 * from the cache; if queryid is not null, the entry must belong to
1772 * the query indicated by queryid.
1775 pcache_remove_entry_queries_from_cache(
1779 struct berval *queryid )
1781 Connection conn = { 0 };
1782 OperationBuffer opbuf;
1784 slap_callback sc = { 0 };
1785 SlapReply rs = { REP_RESULT };
1787 char filter_str[ LDAP_LUTIL_UUIDSTR_BUFSIZE + STRLENOF( "(queryId=)" ) ];
1788 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
1789 AttributeName attrs[ 2 ] = { 0 };
1792 BerVarray vals = NULL;
1795 void *thrctx = ldap_pvt_thread_pool_context();
1797 connection_fake_init( &conn, &opbuf, thrctx );
1805 memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1806 op->ors_scope = LDAP_SCOPE_BASE;
1807 op->ors_deref = LDAP_DEREF_NEVER;
1808 if ( queryid == NULL || BER_BVISNULL( queryid ) ) {
1809 BER_BVSTR( &op->ors_filterstr, "(objectClass=*)" );
1810 f.f_choice = LDAP_FILTER_PRESENT;
1811 f.f_desc = slap_schema.si_ad_objectClass;
1814 op->ors_filterstr.bv_len = snprintf( filter_str,
1815 sizeof( filter_str ), "(%s=%s)",
1816 ad_queryId->ad_cname.bv_val, queryid->bv_val );
1817 f.f_choice = LDAP_FILTER_EQUALITY;
1819 f.f_av_desc = ad_queryId;
1820 f.f_av_value = *queryid;
1822 op->ors_filter = &f;
1824 op->ors_tlimit = SLAP_NO_LIMIT;
1825 attrs[ 0 ].an_desc = ad_queryId;
1826 attrs[ 0 ].an_name = ad_queryId->ad_cname;
1827 op->ors_attrs = attrs;
1828 op->ors_attrsonly = 0;
1830 op->o_req_dn = *ndn;
1831 op->o_req_ndn = *ndn;
1833 op->o_tag = LDAP_REQ_SEARCH;
1834 op->o_protocol = LDAP_VERSION3;
1835 op->o_managedsait = SLAP_CONTROL_CRITICAL;
1837 op->o_dn = op->o_bd->be_rootdn;
1838 op->o_ndn = op->o_bd->be_rootndn;
1839 sc.sc_response = fetch_queryId_cb;
1840 op->o_callback = ≻
1842 rc = op->o_bd->be_search( op, &rs );
1843 if ( rc != LDAP_SUCCESS ) {
1847 vals = (BerVarray)op->o_callback->sc_private;
1848 if ( vals != NULL ) {
1851 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1852 struct berval val = vals[ i ];
1854 remove_query_and_data( op, &rs, cm, &val );
1856 if ( !BER_BVISNULL( &val ) && val.bv_val != vals[ i ].bv_val ) {
1857 ch_free( val.bv_val );
1861 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1864 return LDAP_SUCCESS;
1871 struct berval *query_uuid )
1873 struct search_info *si = op->o_callback->sc_private;
1874 slap_overinst *on = si->on;
1875 cache_manager *cm = on->on_bi.bi_private;
1878 struct berval crp_uuid;
1879 char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
1880 Operation op_tmp = *op;
1882 query_uuid->bv_len = lutil_uuidstr(uuidbuf, sizeof(uuidbuf));
1883 ber_str2bv(uuidbuf, query_uuid->bv_len, 1, query_uuid);
1885 op_tmp.o_bd = &cm->db;
1886 op_tmp.o_dn = cm->db.be_rootdn;
1887 op_tmp.o_ndn = cm->db.be_rootndn;
1889 Debug( pcache_debug, "UUID for query being added = %s\n",
1892 for ( e=si->head; e; e=si->head ) {
1893 si->head = e->e_private;
1894 e->e_private = NULL;
1895 while ( cm->cur_entries > (cm->max_entries) ) {
1896 BER_BVZERO( &crp_uuid );
1897 remove_query_and_data( &op_tmp, rs, cm, &crp_uuid );
1900 return_val = merge_entry(&op_tmp, e, query_uuid);
1901 ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
1902 cm->cur_entries += return_val;
1903 Debug( pcache_debug,
1904 "ENTRY ADDED/MERGED, CACHED ENTRIES=%d\n",
1905 cm->cur_entries, 0, 0 );
1907 ldap_pvt_thread_mutex_unlock(&cm->cache_mutex);
1914 pcache_op_cleanup( Operation *op, SlapReply *rs ) {
1915 slap_callback *cb = op->o_callback;
1916 struct search_info *si = cb->sc_private;
1917 slap_overinst *on = si->on;
1918 cache_manager *cm = on->on_bi.bi_private;
1919 query_manager* qm = cm->qm;
1921 if ( rs->sr_type == REP_SEARCH ) {
1924 /* don't return more entries than requested by the client */
1925 if ( si->slimit && rs->sr_nentries >= si->slimit ) {
1926 si->slimit_exceeded = 1;
1929 /* If we haven't exceeded the limit for this query,
1930 * build a chain of answers to store. If we hit the
1931 * limit, empty the chain and ignore the rest.
1934 if ( si->count < si->max ) {
1936 e = entry_dup( rs->sr_entry );
1937 if ( !si->head ) si->head = e;
1938 if ( si->tail ) si->tail->e_private = e;
1944 for (;si->head; si->head=e) {
1945 e = si->head->e_private;
1946 si->head->e_private = NULL;
1947 entry_free(si->head);
1955 if ( rs->sr_type == REP_RESULT ||
1956 op->o_abandon || rs->sr_err == SLAPD_ABANDON )
1958 if ( si->save_attrs != NULL ) {
1959 rs->sr_attrs = si->save_attrs;
1960 op->ors_attrs = si->save_attrs;
1962 if ( op->o_abandon || rs->sr_err == SLAPD_ABANDON ) {
1963 filter_free( si->query.filter );
1965 /* duplicate query, free it */
1967 for (;si->head; si->head=e) {
1968 e = si->head->e_private;
1969 si->head->e_private = NULL;
1970 entry_free(si->head);
1973 op->o_callback = op->o_callback->sc_next;
1974 op->o_tmpfree( cb, op->o_tmpmemctx );
1975 } else if ( si->caching_reason != PC_IGNORE ) {
1976 CachedQuery *qc = qm->addfunc(op, qm, &si->query,
1977 si->qtemp, si->caching_reason, 1 );
1980 switch ( si->caching_reason ) {
1982 cache_entries( op, rs, &qc->q_uuid );
1986 qc->q_sizelimit = rs->sr_nentries;
1989 ldap_pvt_thread_rdwr_wunlock(&qc->rwlock);
1990 ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
1991 cm->num_cached_queries++;
1992 Debug( pcache_debug, "STORED QUERIES = %lu\n",
1993 cm->num_cached_queries, 0, 0 );
1994 ldap_pvt_thread_mutex_unlock(&cm->cache_mutex);
1996 /* If the consistency checker suspended itself,
1999 if ( cm->cc_paused ) {
2000 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2001 if ( cm->cc_paused ) {
2003 ldap_pvt_runqueue_resched( &slapd_rq, cm->cc_arg, 0 );
2005 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2008 } else if ( si->count ) {
2009 /* duplicate query, free it */
2011 for (;si->head; si->head=e) {
2012 e = si->head->e_private;
2013 si->head->e_private = NULL;
2014 entry_free(si->head);
2019 filter_free( si->query.filter );
2023 return SLAP_CB_CONTINUE;
2031 struct search_info *si = op->o_callback->sc_private;
2033 if ( si->save_attrs != NULL ) {
2034 rs->sr_attrs = si->save_attrs;
2035 op->ors_attrs = si->save_attrs;
2038 if ( rs->sr_type == REP_SEARCH ) {
2039 /* don't return more entries than requested by the client */
2040 if ( si->slimit_exceeded ) {
2044 } else if ( rs->sr_type == REP_RESULT ) {
2047 if ( rs->sr_err == LDAP_SUCCESS ) {
2048 si->caching_reason = PC_POSITIVE;
2050 } else if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED
2051 && si->qtemp->limitttl )
2053 si->caching_reason = PC_SIZELIMIT;
2056 } else if ( si->qtemp->negttl && !si->count && !si->over &&
2057 rs->sr_err == LDAP_SUCCESS )
2059 si->caching_reason = PC_NEGATIVE;
2063 if ( si->slimit_exceeded ) {
2064 rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
2068 return SLAP_CB_CONTINUE;
2074 AttributeName** new_attrs,
2075 struct attr_set *attrs,
2076 AttributeName* filter_attrs,
2086 /* duplicate attrs */
2087 count = attrs->count + fattr_cnt;
2088 if ( !fattr_got_oc && !(attrs->flags & PC_GOT_OC)) {
2093 *new_attrs = (AttributeName*)ch_calloc( count + 1,
2094 sizeof(AttributeName) );
2095 for (i=0; i<attrs->count; i++) {
2096 (*new_attrs)[i].an_name = attrs->attrs[i].an_name;
2097 (*new_attrs)[i].an_desc = attrs->attrs[i].an_desc;
2099 BER_BVZERO( &(*new_attrs)[i].an_name );
2100 alluser = an_find(*new_attrs, &AllUser);
2101 allop = an_find(*new_attrs, &AllOper);
2104 for ( i=0; i<fattr_cnt; i++ ) {
2105 if ( an_find(*new_attrs, &filter_attrs[i].an_name ) ) {
2108 if ( is_at_operational(filter_attrs[i].an_desc->ad_type) ) {
2112 } else if ( alluser ) {
2115 (*new_attrs)[j].an_name = filter_attrs[i].an_name;
2116 (*new_attrs)[j].an_desc = filter_attrs[i].an_desc;
2117 (*new_attrs)[j].an_oc = NULL;
2118 (*new_attrs)[j].an_oc_exclude = 0;
2122 (*new_attrs)[j].an_name = slap_schema.si_ad_objectClass->ad_cname;
2123 (*new_attrs)[j].an_desc = slap_schema.si_ad_objectClass;
2124 (*new_attrs)[j].an_oc = NULL;
2125 (*new_attrs)[j].an_oc_exclude = 0;
2128 BER_BVZERO( &(*new_attrs)[j].an_name );
2133 /* NOTE: this is a quick workaround to let pcache minimally interact
2134 * with pagedResults. A more articulated solutions would be to
2135 * perform the remote query without control and cache all results,
2136 * performing the pagedResults search only within the client
2137 * and the proxy. This requires pcache to understand pagedResults. */
2139 pcache_chk_controls(
2143 const char *non = "";
2144 const char *stripped = "";
2146 switch( op->o_pagedresults ) {
2147 case SLAP_CONTROL_NONCRITICAL:
2149 stripped = "; stripped";
2152 case SLAP_CONTROL_CRITICAL:
2153 Debug( pcache_debug, "%s: "
2154 "%scritical pagedResults control "
2155 "disabled with proxy cache%s.\n",
2156 op->o_log_prefix, non, stripped );
2158 slap_remove_control( op, rs, slap_cids.sc_pagedResults, NULL );
2162 rs->sr_err = SLAP_CB_CONTINUE;
2169 #ifdef PCACHE_CONTROL_PRIVDB
2175 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2176 cache_manager *cm = on->on_bi.bi_private;
2177 slap_callback *save_cb;
2180 /* skip if control is unset */
2181 if ( op->o_ctrlflag[ privDB_cid ] != SLAP_CONTROL_CRITICAL ) {
2182 return SLAP_CB_CONTINUE;
2185 /* The cache DB isn't open yet */
2186 if ( cm->defer_db_open ) {
2187 send_ldap_error( op, rs, LDAP_UNAVAILABLE,
2188 "pcachePrivDB: cacheDB not available" );
2192 /* FIXME: might be a little bit exaggerated... */
2193 if ( !be_isroot( op ) ) {
2194 save_cb = op->o_callback;
2195 op->o_callback = NULL;
2196 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
2197 "pcachePrivDB: operation not allowed" );
2198 op->o_callback = save_cb;
2203 /* map tag to operation */
2204 type = slap_req2op( op->o_tag );
2205 if ( type != SLAP_OP_LAST ) {
2209 /* execute, if possible */
2210 func = &cm->db.be_bind;
2211 if ( func[ type ] != NULL ) {
2212 Operation op2 = *op;
2216 rc = func[ type ]( &op2, rs );
2217 if ( type == SLAP_OP_BIND && rc == LDAP_SUCCESS ) {
2218 op->o_conn->c_authz_cookie = cm->db.be_private;
2223 /* otherwise fall back to error */
2224 save_cb = op->o_callback;
2225 op->o_callback = NULL;
2226 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
2227 "operation not supported with pcachePrivDB control" );
2228 op->o_callback = save_cb;
2232 #endif /* PCACHE_CONTROL_PRIVDB */
2239 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2240 cache_manager *cm = on->on_bi.bi_private;
2241 query_manager* qm = cm->qm;
2245 AttributeName *filter_attrs = NULL;
2248 QueryTemplate *qtemp = NULL;
2251 CachedQuery *answerable = NULL;
2254 int fattr_got_oc = 0;
2256 struct berval tempstr;
2258 #ifdef PCACHE_CONTROL_PRIVDB
2259 if ( op->o_ctrlflag[ privDB_cid ] == SLAP_CONTROL_CRITICAL ) {
2260 return pcache_op_privdb( op, rs );
2262 #endif /* PCACHE_CONTROL_PRIVDB */
2264 /* The cache DB isn't open yet */
2265 if ( cm->defer_db_open ) {
2266 send_ldap_error( op, rs, LDAP_UNAVAILABLE,
2267 "pcachePrivDB: cacheDB not available" );
2271 tempstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len+1, op->o_tmpmemctx );
2273 if ( filter2template( op, op->ors_filter, &tempstr, &filter_attrs,
2274 &fattr_cnt, &fattr_got_oc )) {
2275 op->o_tmpfree( tempstr.bv_val, op->o_tmpmemctx );
2276 return SLAP_CB_CONTINUE;
2279 Debug( pcache_debug, "query template of incoming query = %s\n",
2280 tempstr.bv_val, 0, 0 );
2282 /* FIXME: cannot cache/answer requests with pagedResults control */
2285 attr_set = get_attr_set(op->ors_attrs, qm, cm->numattrsets);
2287 query.filter = op->ors_filter;
2288 query.base = op->o_req_ndn;
2289 query.scope = op->ors_scope;
2291 /* check for query containment */
2292 if (attr_set > -1) {
2293 QueryTemplate *qt = qm->attr_sets[attr_set].templates;
2294 for (; qt; qt = qt->qtnext ) {
2295 /* find if template i can potentially answer tempstr */
2296 if (qt->querystr.bv_len != tempstr.bv_len ||
2297 strcasecmp( qt->querystr.bv_val, tempstr.bv_val ))
2301 Debug( pcache_debug, "Entering QC, querystr = %s\n",
2302 op->ors_filterstr.bv_val, 0, 0 );
2303 answerable = (*(qm->qcfunc))(op, qm, &query, qt);
2309 op->o_tmpfree( tempstr.bv_val, op->o_tmpmemctx );
2312 /* Need to clear the callbacks of the original operation,
2313 * in case there are other overlays */
2314 BackendDB *save_bd = op->o_bd;
2315 slap_callback *save_cb = op->o_callback;
2317 Debug( pcache_debug, "QUERY ANSWERABLE\n", 0, 0, 0 );
2318 op->o_tmpfree( filter_attrs, op->o_tmpmemctx );
2319 ldap_pvt_thread_rdwr_rlock(&answerable->rwlock);
2320 if ( BER_BVISNULL( &answerable->q_uuid )) {
2321 /* No entries cached, just an empty result set */
2323 send_ldap_result( op, rs );
2326 op->o_callback = NULL;
2327 i = cm->db.bd_info->bi_op_search( op, rs );
2329 ldap_pvt_thread_rdwr_runlock(&answerable->rwlock);
2330 ldap_pvt_thread_rdwr_runlock(&qtemp->t_rwlock);
2332 op->o_callback = save_cb;
2336 Debug( pcache_debug, "QUERY NOT ANSWERABLE\n", 0, 0, 0 );
2338 ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
2339 if (cm->num_cached_queries >= cm->max_queries) {
2342 ldap_pvt_thread_mutex_unlock(&cm->cache_mutex);
2344 if (op->ors_attrsonly)
2349 struct search_info *si;
2351 Debug( pcache_debug, "QUERY CACHEABLE\n", 0, 0, 0 );
2352 query.filter = filter_dup(op->ors_filter, NULL);
2353 ldap_pvt_thread_rdwr_wlock(&qtemp->t_rwlock);
2354 if ( !qtemp->t_attrs.count ) {
2355 qtemp->t_attrs.count = add_filter_attrs(op,
2356 &qtemp->t_attrs.attrs,
2357 &qm->attr_sets[attr_set],
2358 filter_attrs, fattr_cnt, fattr_got_oc);
2360 ldap_pvt_thread_rdwr_wunlock(&qtemp->t_rwlock);
2362 cb = op->o_tmpalloc( sizeof(*cb) + sizeof(*si), op->o_tmpmemctx );
2363 cb->sc_response = pcache_response;
2364 cb->sc_cleanup = pcache_op_cleanup;
2365 cb->sc_private = (cb+1);
2366 si = cb->sc_private;
2370 si->max = cm->num_entries_limit ;
2374 si->slimit_exceeded = 0;
2375 si->caching_reason = PC_IGNORE;
2376 if ( op->ors_slimit && op->ors_slimit < cm->num_entries_limit ) {
2377 si->slimit = op->ors_slimit;
2378 op->ors_slimit = cm->num_entries_limit;
2382 si->save_attrs = op->ors_attrs;
2384 op->ors_attrs = qtemp->t_attrs.attrs;
2386 if ( cm->response_cb == PCACHE_RESPONSE_CB_HEAD ) {
2387 cb->sc_next = op->o_callback;
2388 op->o_callback = cb;
2391 slap_callback **pcb;
2393 /* need to move the callback at the end, in case other
2394 * overlays are present, so that the final entry is
2395 * actually cached */
2397 for ( pcb = &op->o_callback; *pcb; pcb = &(*pcb)->sc_next );
2402 Debug( pcache_debug, "QUERY NOT CACHEABLE\n",
2406 op->o_tmpfree( filter_attrs, op->o_tmpmemctx );
2408 return SLAP_CB_CONTINUE;
2413 AttributeName* attrs,
2421 for ( ; attrs[count].an_name.bv_val; count++ );
2424 /* recognize a single "*" or a "1.1" */
2427 attrs = slap_anlist_all_user_attributes;
2429 } else if ( count == 1 && strcmp( attrs[0].an_name.bv_val, LDAP_NO_ATTRS ) == 0 ) {
2434 for ( i = 0; i < num; i++ ) {
2438 if ( count > qm->attr_sets[i].count ) {
2443 if ( !qm->attr_sets[i].count ) {
2449 for ( a2 = attrs; a2->an_name.bv_val; a2++ ) {
2450 if ( !an_find( qm->attr_sets[i].attrs, &a2->an_name ) ) {
2473 struct re_s *rtask = arg;
2474 slap_overinst *on = rtask->arg;
2475 cache_manager *cm = on->on_bi.bi_private;
2476 query_manager *qm = cm->qm;
2477 Connection conn = {0};
2478 OperationBuffer opbuf;
2481 SlapReply rs = {REP_RESULT};
2483 int return_val, pause = 1;
2484 QueryTemplate* templ;
2486 connection_fake_init( &conn, &opbuf, ctx );
2490 op->o_dn = cm->db.be_rootdn;
2491 op->o_ndn = cm->db.be_rootndn;
2495 for (templ = qm->templates; templ; templ=templ->qmnext) {
2496 query = templ->query_last;
2497 if ( query ) pause = 0;
2498 op->o_time = slap_get_time();
2499 while (query && (query->expiry_time < op->o_time)) {
2501 Debug( pcache_debug, "Lock CR index = %p\n",
2502 (void *) templ, 0, 0 );
2503 ldap_pvt_thread_rdwr_wlock(&templ->t_rwlock);
2504 if ( query == templ->query_last ) {
2506 remove_from_template(query, templ);
2507 Debug( pcache_debug, "TEMPLATE %p QUERIES-- %d\n",
2508 (void *) templ, templ->no_of_queries, 0 );
2509 Debug( pcache_debug, "Unlock CR index = %p\n",
2510 (void *) templ, 0, 0 );
2512 ldap_pvt_thread_rdwr_wunlock(&templ->t_rwlock);
2514 query = templ->query_last;
2517 ldap_pvt_thread_mutex_lock(&qm->lru_mutex);
2518 remove_query(qm, query);
2519 ldap_pvt_thread_mutex_unlock(&qm->lru_mutex);
2520 if ( BER_BVISNULL( &query->q_uuid ))
2523 return_val = remove_query_data(op, &rs, &query->q_uuid);
2524 Debug( pcache_debug, "STALE QUERY REMOVED, SIZE=%d\n",
2526 ldap_pvt_thread_mutex_lock(&cm->cache_mutex);
2527 cm->cur_entries -= return_val;
2528 cm->num_cached_queries--;
2529 Debug( pcache_debug, "STORED QUERIES = %lu\n",
2530 cm->num_cached_queries, 0, 0 );
2531 ldap_pvt_thread_mutex_unlock(&cm->cache_mutex);
2532 Debug( pcache_debug,
2533 "STALE QUERY REMOVED, CACHE ="
2535 cm->cur_entries, 0, 0 );
2537 query = templ->query_last;
2540 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2541 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
2542 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
2544 /* If there were no queries, defer processing for a while */
2545 cm->cc_paused = pause;
2546 ldap_pvt_runqueue_resched( &slapd_rq, rtask, pause );
2548 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2553 #define MAX_ATTR_SETS 500
2563 static ConfigDriver pc_cf_gen;
2564 static ConfigLDAPadd pc_ldadd;
2565 static ConfigCfAdd pc_cfadd;
2567 static ConfigTable pccfg[] = {
2568 { "proxycache", "backend> <max_entries> <numattrsets> <entry limit> "
2570 6, 6, 0, ARG_MAGIC|ARG_NO_DELETE|PC_MAIN, pc_cf_gen,
2571 "( OLcfgOvAt:2.1 NAME 'olcProxyCache' "
2572 "DESC 'ProxyCache basic parameters' "
2573 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2574 { "proxyattrset", "index> <attributes...",
2575 2, 0, 0, ARG_MAGIC|PC_ATTR, pc_cf_gen,
2576 "( OLcfgOvAt:2.2 NAME 'olcProxyAttrset' "
2577 "DESC 'A set of attributes to cache' "
2578 "SYNTAX OMsDirectoryString )", NULL, NULL },
2579 { "proxytemplate", "filter> <attrset-index> <TTL> <negTTL",
2580 4, 6, 0, ARG_MAGIC|PC_TEMP, pc_cf_gen,
2581 "( OLcfgOvAt:2.3 NAME 'olcProxyTemplate' "
2582 "DESC 'Filter template, attrset, cache TTL, "
2583 "optional negative TTL, optional sizelimit TTL' "
2584 "SYNTAX OMsDirectoryString )", NULL, NULL },
2585 { "response-callback", "head|tail(default)",
2586 2, 2, 0, ARG_MAGIC|PC_RESP, pc_cf_gen,
2587 "( OLcfgOvAt:2.4 NAME 'olcProxyResponseCB' "
2588 "DESC 'Response callback position in overlay stack' "
2589 "SYNTAX OMsDirectoryString )", NULL, NULL },
2590 { "proxyCacheQueries", "queries",
2591 2, 2, 0, ARG_INT|ARG_MAGIC|PC_QUERIES, pc_cf_gen,
2592 "( OLcfgOvAt:2.5 NAME 'olcProxyCacheQueries' "
2593 "DESC 'Maximum number of queries to cache' "
2594 "SYNTAX OMsInteger )", NULL, NULL },
2595 { "proxySaveQueries", "TRUE|FALSE",
2596 2, 2, 0, ARG_ON_OFF|ARG_OFFSET, (void *)offsetof(cache_manager, save_queries),
2597 "( OLcfgOvAt:2.6 NAME 'olcProxySaveQueries' "
2598 "DESC 'Save cached queries for hot restart' "
2599 "SYNTAX OMsBoolean )", NULL, NULL },
2601 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2604 /* Need to no-op this keyword for dynamic config */
2605 static ConfigTable pcdummy[] = {
2606 { "", "", 0, 0, 0, ARG_IGNORED,
2607 NULL, "( OLcfgGlAt:13 NAME 'olcDatabase' "
2608 "DESC 'The backend type for a database instance' "
2609 "SUP olcBackend SINGLE-VALUE X-ORDERED 'SIBLINGS' )", NULL, NULL },
2610 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2613 static ConfigOCs pcocs[] = {
2614 { "( OLcfgOvOc:2.1 "
2615 "NAME 'olcPcacheConfig' "
2616 "DESC 'ProxyCache configuration' "
2617 "SUP olcOverlayConfig "
2618 "MUST ( olcProxyCache $ olcProxyAttrset $ olcProxyTemplate ) "
2619 "MAY ( olcProxyResponseCB $ olcProxyCacheQueries $ olcProxySaveQueries ) )",
2620 Cft_Overlay, pccfg, NULL, pc_cfadd },
2621 { "( OLcfgOvOc:2.2 "
2622 "NAME 'olcPcacheDatabase' "
2623 "DESC 'Cache database configuration' "
2624 "AUXILIARY )", Cft_Misc, pcdummy, pc_ldadd },
2628 static int pcache_db_open2( slap_overinst *on, ConfigReply *cr );
2631 pc_ldadd_cleanup( ConfigArgs *c )
2633 slap_overinst *on = c->private;
2634 return pcache_db_open2( on, &c->reply );
2638 pc_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
2643 if ( p->ce_type != Cft_Overlay || !p->ce_bi ||
2644 p->ce_bi->bi_cf_ocs != pcocs )
2645 return LDAP_CONSTRAINT_VIOLATION;
2647 on = (slap_overinst *)p->ce_bi;
2648 cm = on->on_bi.bi_private;
2650 ca->cleanup = pc_ldadd_cleanup;
2652 return LDAP_SUCCESS;
2656 pc_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
2658 CfEntryInfo *pe = p->e_private;
2659 slap_overinst *on = (slap_overinst *)pe->ce_bi;
2660 cache_manager *cm = on->on_bi.bi_private;
2663 /* FIXME: should not hardcode "olcDatabase" here */
2664 bv.bv_len = sprintf( ca->cr_msg, "olcDatabase=%s", cm->db.bd_info->bi_type );
2665 bv.bv_val = ca->cr_msg;
2667 cm->defer_db_open = 0;
2669 /* We can only create this entry if the database is table-driven
2671 if ( cm->db.bd_info->bi_cf_ocs )
2672 config_build_entry( op, rs, pe, ca, &bv, cm->db.bd_info->bi_cf_ocs,
2679 pc_cf_gen( ConfigArgs *c )
2681 slap_overinst *on = (slap_overinst *)c->bi;
2682 cache_manager* cm = on->on_bi.bi_private;
2683 query_manager* qm = cm->qm;
2684 QueryTemplate* temp;
2685 AttributeName* attr_name;
2686 AttributeName* attrarray;
2687 const char* text=NULL;
2692 if ( c->op == SLAP_CONFIG_EMIT ) {
2696 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s %d %d %d %ld",
2697 cm->db.bd_info->bi_type, cm->max_entries, cm->numattrsets,
2698 cm->num_entries_limit, cm->cc_period );
2699 bv.bv_val = c->cr_msg;
2700 value_add_one( &c->rvalue_vals, &bv );
2703 for (i=0; i<cm->numattrsets; i++) {
2704 if ( !qm->attr_sets[i].count ) continue;
2706 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ), "%d", i );
2708 /* count the attr length */
2709 for ( attr_name = qm->attr_sets[i].attrs;
2710 attr_name->an_name.bv_val; attr_name++ )
2711 bv.bv_len += attr_name->an_name.bv_len + 1;
2713 bv.bv_val = ch_malloc( bv.bv_len+1 );
2714 ptr = lutil_strcopy( bv.bv_val, c->cr_msg );
2715 for ( attr_name = qm->attr_sets[i].attrs;
2716 attr_name->an_name.bv_val; attr_name++ ) {
2718 ptr = lutil_strcopy( ptr, attr_name->an_name.bv_val );
2720 ber_bvarray_add( &c->rvalue_vals, &bv );
2722 if ( !c->rvalue_vals )
2726 for (temp=qm->templates; temp; temp=temp->qmnext) {
2727 /* HEADS-UP: always print all;
2728 * if optional == 0, ignore */
2729 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2731 temp->attr_set_index,
2735 bv.bv_len += temp->querystr.bv_len + 2;
2736 bv.bv_val = ch_malloc( bv.bv_len+1 );
2739 ptr = lutil_strcopy( ptr, temp->querystr.bv_val );
2741 strcpy( ptr, c->cr_msg );
2742 ber_bvarray_add( &c->rvalue_vals, &bv );
2744 if ( !c->rvalue_vals )
2748 if ( cm->response_cb == PCACHE_RESPONSE_CB_HEAD ) {
2749 BER_BVSTR( &bv, "head" );
2751 BER_BVSTR( &bv, "tail" );
2753 value_add_one( &c->rvalue_vals, &bv );
2756 c->value_int = cm->max_queries;
2760 } else if ( c->op == LDAP_MOD_DELETE ) {
2761 return 1; /* FIXME */
2773 if ( cm->numattrsets > 0 ) {
2774 snprintf( c->cr_msg, sizeof( c->cr_msg ), "\"proxycache\" directive already provided" );
2775 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2779 if ( lutil_atoi( &cm->numattrsets, c->argv[3] ) != 0 ) {
2780 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse num attrsets=\"%s\" (arg #3)",
2782 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2785 if ( cm->numattrsets <= 0 ) {
2786 snprintf( c->cr_msg, sizeof( c->cr_msg ), "numattrsets (arg #3) must be positive" );
2787 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2790 if ( cm->numattrsets > MAX_ATTR_SETS ) {
2791 snprintf( c->cr_msg, sizeof( c->cr_msg ), "numattrsets (arg #3) must be <= %d", MAX_ATTR_SETS );
2792 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2796 if ( !backend_db_init( c->argv[1], &cm->db, -1, NULL )) {
2797 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unknown backend type (arg #1)" );
2798 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2802 if ( lutil_atoi( &cm->max_entries, c->argv[2] ) != 0 ) {
2803 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse max entries=\"%s\" (arg #2)",
2805 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2808 if ( cm->max_entries <= 0 ) {
2809 snprintf( c->cr_msg, sizeof( c->cr_msg ), "max entries (arg #2) must be positive.\n" );
2810 Debug( LDAP_DEBUG_CONFIG, "%s: %s\n", c->log, c->cr_msg, 0 );
2814 if ( lutil_atoi( &cm->num_entries_limit, c->argv[4] ) != 0 ) {
2815 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse entry limit=\"%s\" (arg #4)",
2817 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2820 if ( cm->num_entries_limit <= 0 ) {
2821 snprintf( c->cr_msg, sizeof( c->cr_msg ), "entry limit (arg #4) must be positive" );
2822 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2825 if ( cm->num_entries_limit > cm->max_entries ) {
2826 snprintf( c->cr_msg, sizeof( c->cr_msg ), "entry limit (arg #4) must be less than max entries %d (arg #2)", cm->max_entries );
2827 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2831 if ( lutil_parse_time( c->argv[5], &t ) != 0 ) {
2832 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse period=\"%s\" (arg #5)",
2834 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2838 cm->cc_period = (time_t)t;
2839 Debug( pcache_debug,
2840 "Total # of attribute sets to be cached = %d.\n",
2841 cm->numattrsets, 0, 0 );
2842 qm->attr_sets = ( struct attr_set * )ch_calloc( cm->numattrsets,
2843 sizeof( struct attr_set ) );
2846 if ( cm->numattrsets == 0 ) {
2847 snprintf( c->cr_msg, sizeof( c->cr_msg ), "\"proxycache\" directive not provided yet" );
2848 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2851 if ( lutil_atoi( &num, c->argv[1] ) != 0 ) {
2852 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse attrset #=\"%s\"",
2854 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2858 if ( num < 0 || num >= cm->numattrsets ) {
2859 snprintf( c->cr_msg, sizeof( c->cr_msg ), "attrset index %d out of bounds (must be %s%d)",
2860 num, cm->numattrsets > 1 ? "0->" : "", cm->numattrsets - 1 );
2861 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2864 qm->attr_sets[num].flags |= PC_CONFIGURED;
2865 if ( c->argc == 2 ) {
2867 snprintf( c->cr_msg, sizeof( c->cr_msg ),
2868 "need an explicit attr in attrlist; use \"*\" to indicate all attrs" );
2869 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2872 } else if ( c->argc == 3 ) {
2873 if ( strcmp( c->argv[2], LDAP_ALL_USER_ATTRIBUTES ) == 0 ) {
2874 qm->attr_sets[num].count = 1;
2875 qm->attr_sets[num].attrs = (AttributeName*)ch_calloc( 2,
2876 sizeof( AttributeName ) );
2877 BER_BVSTR( &qm->attr_sets[num].attrs[0].an_name, LDAP_ALL_USER_ATTRIBUTES );
2880 } else if ( strcmp( c->argv[2], LDAP_ALL_OPERATIONAL_ATTRIBUTES ) == 0 ) {
2881 qm->attr_sets[num].count = 1;
2882 qm->attr_sets[num].attrs = (AttributeName*)ch_calloc( 2,
2883 sizeof( AttributeName ) );
2884 BER_BVSTR( &qm->attr_sets[num].attrs[0].an_name, LDAP_ALL_OPERATIONAL_ATTRIBUTES );
2887 } else if ( strcmp( c->argv[2], LDAP_NO_ATTRS ) == 0 ) {
2890 /* else: fallthru */
2892 } else if ( c->argc == 4 ) {
2893 if ( ( strcmp( c->argv[2], LDAP_ALL_USER_ATTRIBUTES ) == 0 && strcmp( c->argv[3], LDAP_ALL_OPERATIONAL_ATTRIBUTES ) == 0 )
2894 || ( strcmp( c->argv[2], LDAP_ALL_OPERATIONAL_ATTRIBUTES ) == 0 && strcmp( c->argv[3], LDAP_ALL_USER_ATTRIBUTES ) == 0 ) )
2896 qm->attr_sets[num].count = 2;
2897 qm->attr_sets[num].attrs = (AttributeName*)ch_calloc( 3,
2898 sizeof( AttributeName ) );
2899 BER_BVSTR( &qm->attr_sets[num].attrs[0].an_name, LDAP_ALL_USER_ATTRIBUTES );
2900 BER_BVSTR( &qm->attr_sets[num].attrs[1].an_name, LDAP_ALL_OPERATIONAL_ATTRIBUTES );
2903 /* else: fallthru */
2906 if ( c->argc > 2 ) {
2907 int all_user = 0, all_op = 0;
2909 qm->attr_sets[num].count = c->argc - 2;
2910 qm->attr_sets[num].attrs = (AttributeName*)ch_calloc( c->argc - 1,
2911 sizeof( AttributeName ) );
2912 attr_name = qm->attr_sets[num].attrs;
2913 for ( i = 2; i < c->argc; i++ ) {
2914 attr_name->an_desc = NULL;
2915 if ( strcmp( c->argv[i], LDAP_NO_ATTRS ) == 0 ) {
2916 snprintf( c->cr_msg, sizeof( c->cr_msg ),
2917 "invalid attr #%d \"%s\" in attrlist",
2918 i - 2, c->argv[i] );
2919 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2920 ch_free( qm->attr_sets[num].attrs );
2921 qm->attr_sets[num].attrs = NULL;
2922 qm->attr_sets[num].count = 0;
2925 if ( strcmp( c->argv[i], LDAP_ALL_USER_ATTRIBUTES ) == 0 ) {
2927 BER_BVSTR( &attr_name->an_name, LDAP_ALL_USER_ATTRIBUTES );
2928 } else if ( strcmp( c->argv[i], LDAP_ALL_OPERATIONAL_ATTRIBUTES ) == 0 ) {
2930 BER_BVSTR( &attr_name->an_name, LDAP_ALL_OPERATIONAL_ATTRIBUTES );
2932 if ( slap_str2ad( c->argv[i], &attr_name->an_desc, &text ) ) {
2933 strcpy( c->cr_msg, text );
2934 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2935 ch_free( qm->attr_sets[num].attrs );
2936 qm->attr_sets[num].attrs = NULL;
2937 qm->attr_sets[num].count = 0;
2940 attr_name->an_name = attr_name->an_desc->ad_cname;
2942 attr_name->an_oc = NULL;
2943 attr_name->an_oc_exclude = 0;
2944 if ( attr_name->an_desc == slap_schema.si_ad_objectClass )
2945 qm->attr_sets[num].flags |= PC_GOT_OC;
2947 BER_BVZERO( &attr_name->an_name );
2950 /* warn if list contains both "*" and "+" */
2951 if ( i > 4 && all_user && all_op ) {
2952 snprintf( c->cr_msg, sizeof( c->cr_msg ),
2953 "warning: attribute list contains \"*\" and \"+\"" );
2954 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2959 if ( cm->numattrsets == 0 ) {
2960 snprintf( c->cr_msg, sizeof( c->cr_msg ), "\"proxycache\" directive not provided yet" );
2961 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2964 if ( lutil_atoi( &i, c->argv[2] ) != 0 ) {
2965 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unable to parse template #=\"%s\"",
2967 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2971 if ( i < 0 || i >= cm->numattrsets ||
2972 !(qm->attr_sets[i].flags & PC_CONFIGURED )) {
2973 snprintf( c->cr_msg, sizeof( c->cr_msg ), "template index %d invalid (%s%d)",
2974 i, cm->numattrsets > 1 ? "0->" : "", cm->numattrsets - 1 );
2975 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2978 temp = ch_calloc( 1, sizeof( QueryTemplate ));
2979 temp->qmnext = qm->templates;
2980 qm->templates = temp;
2981 ldap_pvt_thread_rdwr_init( &temp->t_rwlock );
2982 temp->query = temp->query_last = NULL;
2983 if ( lutil_parse_time( c->argv[3], &t ) != 0 ) {
2984 snprintf( c->cr_msg, sizeof( c->cr_msg ),
2985 "unable to parse template ttl=\"%s\"",
2987 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
2990 temp->ttl = (time_t)t;
2991 temp->negttl = (time_t)0;
2992 temp->limitttl = (time_t)0;
2993 switch ( c->argc ) {
2995 if ( lutil_parse_time( c->argv[5], &t ) != 0 ) {
2996 snprintf( c->cr_msg, sizeof( c->cr_msg ),
2997 "unable to parse template sizelimit ttl=\"%s\"",
2999 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
3002 temp->limitttl = (time_t)t;
3006 if ( lutil_parse_time( c->argv[4], &t ) != 0 ) {
3007 snprintf( c->cr_msg, sizeof( c->cr_msg ),
3008 "unable to parse template negative ttl=\"%s\"",
3010 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
3013 temp->negttl = (time_t)t;
3017 temp->no_of_queries = 0;
3019 ber_str2bv( c->argv[1], 0, 1, &temp->querystr );
3020 Debug( pcache_debug, "Template:\n", 0, 0, 0 );
3021 Debug( pcache_debug, " query template: %s\n",
3022 temp->querystr.bv_val, 0, 0 );
3023 temp->attr_set_index = i;
3024 qm->attr_sets[i].flags |= PC_REFERENCED;
3025 temp->qtnext = qm->attr_sets[i].templates;
3026 qm->attr_sets[i].templates = temp;
3027 Debug( pcache_debug, " attributes: \n", 0, 0, 0 );
3028 if ( ( attrarray = qm->attr_sets[i].attrs ) != NULL ) {
3029 for ( i=0; attrarray[i].an_name.bv_val; i++ )
3030 Debug( pcache_debug, "\t%s\n",
3031 attrarray[i].an_name.bv_val, 0, 0 );
3035 if ( strcasecmp( c->argv[1], "head" ) == 0 ) {
3036 cm->response_cb = PCACHE_RESPONSE_CB_HEAD;
3038 } else if ( strcasecmp( c->argv[1], "tail" ) == 0 ) {
3039 cm->response_cb = PCACHE_RESPONSE_CB_TAIL;
3042 snprintf( c->cr_msg, sizeof( c->cr_msg ), "unknown specifier" );
3043 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
3048 if ( c->value_int <= 0 ) {
3049 snprintf( c->cr_msg, sizeof( c->cr_msg ), "max queries must be positive" );
3050 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n", c->log, c->cr_msg, 0 );
3053 cm->max_queries = c->value_int;
3068 slap_overinst *on = (slap_overinst *)be->bd_info;
3069 cache_manager* cm = on->on_bi.bi_private;
3071 /* Something for the cache database? */
3072 if ( cm->db.bd_info && cm->db.bd_info->bi_db_config )
3073 return cm->db.bd_info->bi_db_config( &cm->db, fname, lineno,
3075 return SLAP_CONF_UNKNOWN;
3083 slap_overinst *on = (slap_overinst *)be->bd_info;
3087 cm = (cache_manager *)ch_malloc(sizeof(cache_manager));
3088 on->on_bi.bi_private = cm;
3090 qm = (query_manager*)ch_malloc(sizeof(query_manager));
3093 SLAP_DBFLAGS(&cm->db) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
3094 cm->db.be_private = NULL;
3095 cm->db.be_pcl_mutexp = &cm->db.be_pcl_mutex;
3097 cm->numattrsets = 0;
3098 cm->num_entries_limit = 5;
3099 cm->num_cached_queries = 0;
3100 cm->max_entries = 0;
3101 cm->cur_entries = 0;
3102 cm->max_queries = 10000;
3103 cm->save_queries = 0;
3104 cm->response_cb = PCACHE_RESPONSE_CB_TAIL;
3105 cm->defer_db_open = 1;
3106 cm->cc_period = 1000;
3110 qm->attr_sets = NULL;
3111 qm->templates = NULL;
3113 qm->lru_bottom = NULL;
3115 qm->qcfunc = query_containment;
3116 qm->crfunc = cache_replacement;
3117 qm->addfunc = add_query;
3118 ldap_pvt_thread_mutex_init(&qm->lru_mutex);
3120 ldap_pvt_thread_mutex_init(&cm->cache_mutex);
3125 pcache_cachedquery_open_cb( Operation *op, SlapReply *rs )
3127 assert( op->o_tag == LDAP_REQ_SEARCH );
3129 if ( rs->sr_type == REP_SEARCH ) {
3132 a = attr_find( rs->sr_entry->e_attrs, ad_cachedQueryURL );
3136 assert( a->a_nvals != NULL );
3138 valsp = op->o_callback->sc_private;
3139 assert( *valsp == NULL );
3141 ber_bvarray_dup_x( valsp, a->a_nvals, op->o_tmpmemctx );
3149 pcache_cachedquery_count_cb( Operation *op, SlapReply *rs )
3151 assert( op->o_tag == LDAP_REQ_SEARCH );
3153 if ( rs->sr_type == REP_SEARCH ) {
3154 int *countp = (int *)op->o_callback->sc_private;
3167 cache_manager *cm = on->on_bi.bi_private;
3168 query_manager* qm = cm->qm;
3171 rc = backend_startup_one( &cm->db, NULL );
3173 cm->defer_db_open = 0;
3176 /* There is no runqueue in TOOL mode */
3177 if (( slapMode & SLAP_SERVER_MODE ) && rc == 0 ) {
3178 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
3179 ldap_pvt_runqueue_insert( &slapd_rq, cm->cc_period,
3180 consistency_check, on,
3181 "pcache_consistency", cm->db.be_suffix[0].bv_val );
3182 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
3184 /* Cached database must have the rootdn */
3185 if ( BER_BVISNULL( &cm->db.be_rootndn )
3186 || BER_BVISEMPTY( &cm->db.be_rootndn ) )
3188 Debug( LDAP_DEBUG_ANY, "pcache_db_open(): "
3189 "underlying database of type \"%s\"\n"
3190 " serving naming context \"%s\"\n"
3191 " has no \"rootdn\", required by \"proxycache\".\n",
3192 on->on_info->oi_orig->bi_type,
3193 cm->db.be_suffix[0].bv_val, 0 );
3197 if ( cm->save_queries ) {
3198 void *thrctx = ldap_pvt_thread_pool_context();
3199 Connection conn = { 0 };
3200 OperationBuffer opbuf;
3202 slap_callback cb = { 0 };
3203 SlapReply rs = { 0 };
3204 BerVarray vals = NULL;
3205 Filter f = { 0 }, f2 = { 0 };
3206 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
3207 AttributeName attrs[ 2 ] = { 0 };
3209 connection_fake_init( &conn, &opbuf, thrctx );
3214 op->o_tag = LDAP_REQ_SEARCH;
3215 op->o_protocol = LDAP_VERSION3;
3216 cb.sc_response = pcache_cachedquery_open_cb;
3217 cb.sc_private = &vals;
3218 op->o_callback = &cb;
3219 op->o_time = slap_get_time();
3220 op->o_do_not_cache = 1;
3221 op->o_managedsait = SLAP_CONTROL_CRITICAL;
3223 op->o_dn = cm->db.be_rootdn;
3224 op->o_ndn = cm->db.be_rootndn;
3225 op->o_req_dn = cm->db.be_suffix[ 0 ];
3226 op->o_req_ndn = cm->db.be_nsuffix[ 0 ];
3228 op->ors_scope = LDAP_SCOPE_BASE;
3229 op->ors_deref = LDAP_DEREF_NEVER;
3231 op->ors_tlimit = SLAP_NO_LIMIT;
3232 ber_str2bv( "(cachedQueryURL=*)", 0, 0, &op->ors_filterstr );
3233 f.f_choice = LDAP_FILTER_PRESENT;
3234 f.f_desc = ad_cachedQueryURL;
3235 op->ors_filter = &f;
3236 attrs[ 0 ].an_desc = ad_cachedQueryURL;
3237 attrs[ 0 ].an_name = ad_cachedQueryURL->ad_cname;
3238 op->ors_attrs = attrs;
3239 op->ors_attrsonly = 0;
3241 rc = op->o_bd->be_search( op, &rs );
3242 if ( rc == LDAP_SUCCESS && vals != NULL ) {
3245 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
3246 if ( url2query( vals[ i ].bv_val, op, qm ) == 0 ) {
3247 cm->num_cached_queries++;
3251 ber_bvarray_free_x( vals, op->o_tmpmemctx );
3254 /* count cached entries */
3255 f.f_choice = LDAP_FILTER_NOT;
3257 f2.f_choice = LDAP_FILTER_EQUALITY;
3259 f2.f_av_desc = slap_schema.si_ad_objectClass;
3260 BER_BVSTR( &f2.f_av_value, "glue" );
3261 ber_str2bv( "(!(objectClass=glue))", 0, 0, &op->ors_filterstr );
3263 op->ors_slimit = SLAP_NO_LIMIT;
3264 op->ors_scope = LDAP_SCOPE_SUBTREE;
3265 op->ors_attrs = slap_anlist_no_attrs;
3267 op->o_callback->sc_response = pcache_cachedquery_count_cb;
3269 op->o_callback->sc_private = &rs.sr_nentries;
3271 rc = op->o_bd->be_search( op, &rs );
3273 cm->cur_entries = rs.sr_nentries;
3287 slap_overinst *on = (slap_overinst *)be->bd_info;
3288 cache_manager *cm = on->on_bi.bi_private;
3289 query_manager* qm = cm->qm;
3290 int i, ncf = 0, rf = 0, nrf = 0, rc = 0;
3292 /* check attr sets */
3293 for ( i = 0; i < cm->numattrsets; i++) {
3294 if ( !( qm->attr_sets[i].flags & PC_CONFIGURED ) ) {
3295 if ( qm->attr_sets[i].flags & PC_REFERENCED ) {
3296 Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d not configured but referenced.\n", i, 0, 0 );
3300 Debug( LDAP_DEBUG_CONFIG, "pcache: warning, attr set #%d not configured.\n", i, 0, 0 );
3304 } else if ( !( qm->attr_sets[i].flags & PC_REFERENCED ) ) {
3305 Debug( LDAP_DEBUG_CONFIG, "pcache: attr set #%d configured but not referenced.\n", i, 0, 0 );
3310 if ( ncf || rf || nrf ) {
3311 Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets configured but not referenced.\n", nrf, 0, 0 );
3312 Debug( LDAP_DEBUG_CONFIG, "pcache: warning, %d attr sets not configured.\n", ncf, 0, 0 );
3313 Debug( LDAP_DEBUG_CONFIG, "pcache: %d attr sets not configured but referenced.\n", rf, 0, 0 );
3320 /* need to inherit something from the original database... */
3321 cm->db.be_def_limit = be->be_def_limit;
3322 cm->db.be_limits = be->be_limits;
3323 cm->db.be_acl = be->be_acl;
3324 cm->db.be_dfltaccess = be->be_dfltaccess;
3326 if ( SLAP_DBMONITORING( be ) ) {
3327 SLAP_DBFLAGS( &cm->db ) |= SLAP_DBFLAG_MONITORING;
3330 SLAP_DBFLAGS( &cm->db ) &= ~SLAP_DBFLAG_MONITORING;
3333 if ( !cm->defer_db_open )
3334 rc = pcache_db_open2( on, cr );
3340 pcache_free_qbase( void *v )
3346 tavl_free( qb->scopes[i], NULL );
3356 slap_overinst *on = (slap_overinst *)be->bd_info;
3357 cache_manager *cm = on->on_bi.bi_private;
3358 query_manager *qm = cm->qm;
3362 if ( cm->save_queries ) {
3364 BerVarray vals = NULL;
3367 Connection conn = { 0 };
3368 OperationBuffer opbuf;
3370 slap_callback cb = { 0 };
3372 SlapReply rs = { REP_RESULT };
3373 Modifications mod = { 0 };
3375 thrctx = ldap_pvt_thread_pool_context();
3377 connection_fake_init( &conn, &opbuf, thrctx );
3380 if ( qm->templates != NULL ) {
3381 for ( tm = qm->templates; tm != NULL; tm = tm->qmnext ) {
3382 for ( qc = tm->query; qc; qc = qc->next ) {
3385 if ( query2url( op, qc, &bv ) == 0 ) {
3386 ber_bvarray_add_x( &vals, &bv, op->o_tmpmemctx );
3393 op->o_dn = cm->db.be_rootdn;
3394 op->o_ndn = cm->db.be_rootndn;
3396 op->o_tag = LDAP_REQ_MODIFY;
3397 op->o_protocol = LDAP_VERSION3;
3398 cb.sc_response = slap_null_cb;
3399 op->o_callback = &cb;
3400 op->o_time = slap_get_time();
3401 op->o_do_not_cache = 1;
3402 op->o_managedsait = SLAP_CONTROL_CRITICAL;
3404 op->o_req_dn = op->o_bd->be_suffix[0];
3405 op->o_req_ndn = op->o_bd->be_nsuffix[0];
3407 mod.sml_op = LDAP_MOD_REPLACE;
3409 mod.sml_desc = ad_cachedQueryURL;
3410 mod.sml_type = ad_cachedQueryURL->ad_cname;
3411 mod.sml_values = vals;
3412 mod.sml_nvalues = NULL;
3413 mod.sml_numvals = 1;
3414 mod.sml_next = NULL;
3415 Debug( pcache_debug,
3416 "%sSETTING CACHED QUERY URLS\n",
3417 vals == NULL ? "RE" : "", 0, 0 );
3419 op->orm_modlist = &mod;
3421 op->o_bd->be_modify( op, &rs );
3423 ber_bvarray_free_x( vals, op->o_tmpmemctx );
3426 /* cleanup stuff inherited from the original database... */
3427 cm->db.be_limits = NULL;
3428 cm->db.be_acl = NULL;
3430 /* stop the thread ... */
3432 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
3433 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, cm->cc_arg ) ) {
3434 ldap_pvt_runqueue_stoptask( &slapd_rq, cm->cc_arg );
3436 ldap_pvt_runqueue_remove( &slapd_rq, cm->cc_arg );
3437 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
3440 if ( cm->db.bd_info->bi_db_close ) {
3441 rc = cm->db.bd_info->bi_db_close( &cm->db, NULL );
3443 while ( (tm = qm->templates) != NULL ) {
3444 CachedQuery *qc, *qn;
3445 qm->templates = tm->qmnext;
3446 for ( qc = tm->query; qc; qc = qn ) {
3450 avl_free( tm->qbase, pcache_free_qbase );
3451 free( tm->querystr.bv_val );
3452 ldap_pvt_thread_rdwr_destroy( &tm->t_rwlock );
3453 free( tm->t_attrs.attrs );
3457 for ( i=0; i<cm->numattrsets; i++ ) {
3458 free( qm->attr_sets[i].attrs );
3460 free( qm->attr_sets );
3461 qm->attr_sets = NULL;
3472 slap_overinst *on = (slap_overinst *)be->bd_info;
3473 cache_manager *cm = on->on_bi.bi_private;
3474 query_manager *qm = cm->qm;
3476 if ( cm->db.be_private != NULL ) {
3477 backend_stopdown_one( &cm->db );
3480 ldap_pvt_thread_mutex_destroy( &qm->lru_mutex );
3481 ldap_pvt_thread_mutex_destroy( &cm->cache_mutex );
3488 #ifdef PCACHE_CONTROL_PRIVDB
3490 Control ::= SEQUENCE {
3491 controlType LDAPOID,
3492 criticality BOOLEAN DEFAULT FALSE,
3493 controlValue OCTET STRING OPTIONAL }
3495 controlType ::= 1.3.6.1.4.1.4203.666.11.9.5.1
3497 * criticality must be TRUE; controlValue must be absent.
3505 if ( op->o_ctrlflag[ privDB_cid ] != SLAP_CONTROL_NONE ) {
3506 rs->sr_text = "privateDB control specified multiple times";
3507 return LDAP_PROTOCOL_ERROR;
3510 if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
3511 rs->sr_text = "privateDB control value not absent";
3512 return LDAP_PROTOCOL_ERROR;
3515 if ( !ctrl->ldctl_iscritical ) {
3516 rs->sr_text = "privateDB control criticality required";
3517 return LDAP_PROTOCOL_ERROR;
3520 op->o_ctrlflag[ privDB_cid ] = SLAP_CONTROL_CRITICAL;
3522 return LDAP_SUCCESS;
3525 static char *extops[] = {
3526 LDAP_EXOP_MODIFY_PASSWD,
3529 #endif /* PCACHE_CONTROL_PRIVDB */
3531 #ifdef PCACHE_EXOP_QUERY_DELETE
3532 static struct berval pcache_exop_QUERY_DELETE = BER_BVC( PCACHE_EXOP_QUERY_DELETE );
3534 #define LDAP_TAG_EXOP_QUERY_DELETE_BASE ((LBER_CLASS_CONTEXT|LBER_CONSTRUCTED) + 0)
3535 #define LDAP_TAG_EXOP_QUERY_DELETE_DN ((LBER_CLASS_CONTEXT|LBER_CONSTRUCTED) + 1)
3536 #define LDAP_TAG_EXOP_QUERY_DELETE_UUID ((LBER_CLASS_CONTEXT|LBER_CONSTRUCTED) + 2)
3539 ExtendedRequest ::= [APPLICATION 23] SEQUENCE {
3540 requestName [0] LDAPOID,
3541 requestValue [1] OCTET STRING OPTIONAL }
3543 requestName ::= 1.3.6.1.4.1.4203.666.11.9.6.1
3545 requestValue ::= SEQUENCE { CHOICE {
3547 entryDN [1] LDAPDN },
3548 queryID [2] OCTET STRING (SIZE(16))
3549 -- constrained to UUID }
3551 * Either baseDN or entryDN must be present, to allow database selection.
3553 * 1. if baseDN and queryID are present, then the query corresponding
3554 * to queryID is deleted;
3555 * 2. if baseDN is present and queryID is absent, then all queries
3557 * 3. if entryDN is present and queryID is absent, then all queries
3558 * corresponding to the queryID values present in entryDN are deleted;
3559 * 4. if entryDN and queryID are present, then all queries
3560 * corresponding to the queryID values present in entryDN are deleted,
3561 * but only if the value of queryID is contained in the entry;
3563 * Currently, only 1, 3 and 4 are implemented. 2 can be obtained by either
3564 * recursively deleting the database (ldapdelete -r) with PRIVDB control,
3565 * or by removing the database files.
3567 ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
3568 COMPONENTS OF LDAPResult,
3569 responseName [10] LDAPOID OPTIONAL,
3570 responseValue [11] OCTET STRING OPTIONAL }
3572 * responseName and responseValue must be absent.
3576 * - on success, *tagp is either LDAP_TAG_EXOP_QUERY_DELETE_BASE
3577 * or LDAP_TAG_EXOP_QUERY_DELETE_DN.
3578 * - if ndn != NULL, it is set to the normalized DN in the request
3579 * corresponding to either the baseDN or the entryDN, according
3580 * to *tagp; memory is malloc'ed on the Operation's slab, and must
3581 * be freed by the caller.
3582 * - if uuid != NULL, it is set to point to the normalized UUID;
3583 * memory is malloc'ed on the Operation's slab, and must
3584 * be freed by the caller.
3587 pcache_parse_query_delete(
3591 struct berval *uuid,
3595 int rc = LDAP_SUCCESS;
3598 BerElementBuffer berbuf;
3599 BerElement *ber = (BerElement *)&berbuf;
3600 struct berval reqdata = BER_BVNULL;
3612 if ( in == NULL || in->bv_len == 0 ) {
3613 *text = "empty request data field in queryDelete exop";
3614 return LDAP_PROTOCOL_ERROR;
3617 ber_dupbv_x( &reqdata, in, ctx );
3619 /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
3620 ber_init2( ber, &reqdata, 0 );
3622 tag = ber_scanf( ber, "{" /*}*/ );
3624 if ( tag == LBER_ERROR ) {
3625 Debug( LDAP_DEBUG_TRACE,
3626 "pcache_parse_query_delete: decoding error.\n",
3628 goto decoding_error;
3631 tag = ber_peek_tag( ber, &len );
3632 if ( tag == LDAP_TAG_EXOP_QUERY_DELETE_BASE
3633 || tag == LDAP_TAG_EXOP_QUERY_DELETE_DN )
3637 if ( ndn != NULL ) {
3640 tag = ber_scanf( ber, "m", &dn );
3641 if ( tag == LBER_ERROR ) {
3642 Debug( LDAP_DEBUG_TRACE,
3643 "pcache_parse_query_delete: DN parse failed.\n",
3645 goto decoding_error;
3648 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
3649 if ( rc != LDAP_SUCCESS ) {
3650 *text = "invalid DN in queryDelete exop request data";
3655 tag = ber_scanf( ber, "x" /* "m" */ );
3656 if ( tag == LBER_DEFAULT ) {
3657 goto decoding_error;
3661 tag = ber_peek_tag( ber, &len );
3664 if ( tag == LDAP_TAG_EXOP_QUERY_DELETE_UUID ) {
3665 if ( uuid != NULL ) {
3667 char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
3669 tag = ber_scanf( ber, "m", &bv );
3670 if ( tag == LBER_ERROR ) {
3671 Debug( LDAP_DEBUG_TRACE,
3672 "pcache_parse_query_delete: UUID parse failed.\n",
3674 goto decoding_error;
3677 if ( bv.bv_len != 16 ) {
3678 Debug( LDAP_DEBUG_TRACE,
3679 "pcache_parse_query_delete: invalid UUID length %lu.\n",
3680 (unsigned long)bv.bv_len, 0, 0 );
3681 goto decoding_error;
3684 rc = lutil_uuidstr_from_normalized(
3685 bv.bv_val, bv.bv_len,
3686 uuidbuf, sizeof( uuidbuf ) );
3688 goto decoding_error;
3690 ber_str2bv( uuidbuf, rc, 1, uuid );
3694 tag = ber_skip_tag( ber, &len );
3695 if ( tag == LBER_DEFAULT ) {
3696 goto decoding_error;
3700 Debug( LDAP_DEBUG_TRACE,
3701 "pcache_parse_query_delete: invalid UUID length %lu.\n",
3702 (unsigned long)len, 0, 0 );
3703 goto decoding_error;
3707 tag = ber_peek_tag( ber, &len );
3710 if ( tag != LBER_DEFAULT || len != 0 ) {
3712 Debug( LDAP_DEBUG_TRACE,
3713 "pcache_parse_query_delete: decoding error\n",
3715 rc = LDAP_PROTOCOL_ERROR;
3716 *text = "queryDelete data decoding error";
3719 if ( ndn && !BER_BVISNULL( ndn ) ) {
3720 slap_sl_free( ndn->bv_val, ctx );
3724 if ( uuid && !BER_BVISNULL( uuid ) ) {
3725 slap_sl_free( uuid->bv_val, ctx );
3730 if ( !BER_BVISNULL( &reqdata ) ) {
3731 ber_memfree_x( reqdata.bv_val, ctx );
3738 pcache_exop_query_delete(
3742 BackendDB *bd = op->o_bd;
3744 struct berval uuid = BER_BVNULL,
3746 char buf[ SLAP_TEXT_BUFLEN ] = { '\0' };
3748 ber_tag_t tag = LBER_DEFAULT;
3750 if ( LogTest( LDAP_DEBUG_STATS ) ) {
3754 rs->sr_err = pcache_parse_query_delete( op->ore_reqdata,
3755 &tag, &op->o_req_ndn, uuidp,
3756 &rs->sr_text, op->o_tmpmemctx );
3757 if ( rs->sr_err != LDAP_SUCCESS ) {
3761 if ( LogTest( LDAP_DEBUG_STATS ) ) {
3762 assert( !BER_BVISNULL( &op->o_req_ndn ) );
3763 len = snprintf( buf, sizeof( buf ), " dn=\"%s\"", op->o_req_ndn.bv_val );
3765 if ( !BER_BVISNULL( &uuid ) ) {
3766 snprintf( &buf[ len ], sizeof( buf ) - len, " queryId=\"%s\"", uuid.bv_val );
3769 Debug( LDAP_DEBUG_STATS, "%s QUERY DELETE%s\n",
3770 op->o_log_prefix, buf, 0 );
3772 op->o_req_dn = op->o_req_ndn;
3774 op->o_bd = select_backend( &op->o_req_ndn, 0 );
3775 rs->sr_err = backend_check_restrictions( op, rs,
3776 (struct berval *)&pcache_exop_QUERY_DELETE );
3777 if ( rs->sr_err != LDAP_SUCCESS ) {
3781 if ( op->o_bd->be_extended == NULL ) {
3782 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
3783 "backend does not support extended operations" );
3787 op->o_bd->be_extended( op, rs );
3790 if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
3791 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
3792 BER_BVZERO( &op->o_req_ndn );
3793 BER_BVZERO( &op->o_req_dn );
3796 if ( !BER_BVISNULL( &uuid ) ) {
3797 op->o_tmpfree( uuid.bv_val, op->o_tmpmemctx );
3806 pcache_op_extended( Operation *op, SlapReply *rs )
3808 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
3809 cache_manager *cm = on->on_bi.bi_private;
3811 #ifdef PCACHE_CONTROL_PRIVDB
3812 if ( op->o_ctrlflag[ privDB_cid ] == SLAP_CONTROL_CRITICAL ) {
3813 return pcache_op_privdb( op, rs );
3815 #endif /* PCACHE_CONTROL_PRIVDB */
3817 if ( bvmatch( &op->ore_reqoid, &pcache_exop_QUERY_DELETE ) ) {
3818 struct berval uuid = BER_BVNULL;
3819 ber_tag_t tag = LBER_DEFAULT;
3821 rs->sr_err = pcache_parse_query_delete( op->ore_reqdata,
3822 &tag, NULL, &uuid, &rs->sr_text, op->o_tmpmemctx );
3823 assert( rs->sr_err == LDAP_SUCCESS );
3825 if ( tag == LDAP_TAG_EXOP_QUERY_DELETE_DN ) {
3826 /* remove all queries related to the selected entry */
3827 rs->sr_err = pcache_remove_entry_queries_from_cache( op,
3828 cm, &op->o_req_ndn, &uuid );
3830 } else if ( tag == LDAP_TAG_EXOP_QUERY_DELETE_BASE ) {
3831 if ( !BER_BVISNULL( &uuid ) ) {
3832 /* remove the selected query */
3833 rs->sr_err = pcache_remove_query_from_cache( op,
3837 /* TODO: remove all queries */
3838 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
3839 rs->sr_text = "deletion of all queries not implemented";
3843 op->o_tmpfree( uuid.bv_val, op->o_tmpmemctx );
3848 #endif /* PCACHE_EXOP_QUERY_DELETE */
3850 static slap_overinst pcache;
3852 static char *obsolete_names[] = {
3857 #if SLAPD_OVER_PROXYCACHE == SLAPD_MOD_DYNAMIC
3859 #endif /* SLAPD_OVER_PROXYCACHE == SLAPD_MOD_DYNAMIC */
3864 struct berval debugbv = BER_BVC("pcache");
3866 code = slap_loglevel_get( &debugbv, &pcache_debug );
3871 #ifdef PCACHE_CONTROL_PRIVDB
3872 code = register_supported_control( PCACHE_CONTROL_PRIVDB,
3873 SLAP_CTRL_BIND|SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE, extops,
3874 parse_privdb_ctrl, &privDB_cid );
3875 if ( code != LDAP_SUCCESS ) {
3876 Debug( LDAP_DEBUG_ANY,
3877 "pcache_initialize: failed to register control %s (%d)\n",
3878 PCACHE_CONTROL_PRIVDB, code, 0 );
3881 #endif /* PCACHE_CONTROL_PRIVDB */
3883 #ifdef PCACHE_EXOP_QUERY_DELETE
3884 code = load_extop2( (struct berval *)&pcache_exop_QUERY_DELETE,
3885 SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, pcache_exop_query_delete,
3887 if ( code != LDAP_SUCCESS ) {
3888 Debug( LDAP_DEBUG_ANY,
3889 "pcache_initialize: unable to register queryDelete exop: %d.\n",
3893 #endif /* PCACHE_EXOP_QUERY_DELETE */
3895 for ( i = 0; as[i].desc != NULL; i++ ) {
3896 code = register_at( as[i].desc, as[i].adp, 0 );
3898 Debug( LDAP_DEBUG_ANY,
3899 "pcache_initialize: register_at #%d failed\n", i, 0, 0 );
3902 (*as[i].adp)->ad_type->sat_flags |= SLAP_AT_HIDE;
3905 pcache.on_bi.bi_type = "pcache";
3906 pcache.on_bi.bi_obsolete_names = obsolete_names;
3907 pcache.on_bi.bi_db_init = pcache_db_init;
3908 pcache.on_bi.bi_db_config = pcache_db_config;
3909 pcache.on_bi.bi_db_open = pcache_db_open;
3910 pcache.on_bi.bi_db_close = pcache_db_close;
3911 pcache.on_bi.bi_db_destroy = pcache_db_destroy;
3913 pcache.on_bi.bi_op_search = pcache_op_search;
3914 #ifdef PCACHE_CONTROL_PRIVDB
3915 pcache.on_bi.bi_op_bind = pcache_op_privdb;
3916 pcache.on_bi.bi_op_compare = pcache_op_privdb;
3917 pcache.on_bi.bi_op_modrdn = pcache_op_privdb;
3918 pcache.on_bi.bi_op_modify = pcache_op_privdb;
3919 pcache.on_bi.bi_op_add = pcache_op_privdb;
3920 pcache.on_bi.bi_op_delete = pcache_op_privdb;
3921 #endif /* PCACHE_CONTROL_PRIVDB */
3922 #ifdef PCACHE_EXOP_QUERY_DELETE
3923 pcache.on_bi.bi_extended = pcache_op_extended;
3924 #elif defined( PCACHE_CONTROL_PRIVDB )
3925 pcache.on_bi.bi_extended = pcache_op_privdb;
3928 pcache.on_bi.bi_chk_controls = pcache_chk_controls;
3930 pcache.on_bi.bi_cf_ocs = pcocs;
3932 code = config_register_schema( pccfg, pcocs );
3933 if ( code ) return code;
3937 code = slap_str2ad( "olcDatabase", &pcdummy[0].ad, &text );
3938 if ( code ) return code;
3940 return overlay_register( &pcache );
3943 #if SLAPD_OVER_PROXYCACHE == SLAPD_MOD_DYNAMIC
3944 int init_module(int argc, char *argv[]) {
3945 return pcache_initialize();
3949 #endif /* defined(SLAPD_OVER_PROXYCACHE) */