]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/overlays/pcache.c
Fix last commit: C90 rejects declaration after code
[openldap] / servers / slapd / overlays / pcache.c
index d75ec066728190b063c42ce8bbf35c540b8c24c2..3a1a5fa60b0732f46adc6bcc7659b0f40de63ced 100644 (file)
@@ -1,7 +1,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 2003-2008 The OpenLDAP Foundation.
+ * Copyright 2003-2009 The OpenLDAP Foundation.
  * Portions Copyright 2003 IBM Corporation.
  * Portions Copyright 2003 Symas Corporation.
  * All rights reserved.
@@ -588,13 +588,12 @@ static int lex_bvcmp( struct berval *bv1, struct berval *bv2 )
        return len;
 }
 
-/* compare the first value in each filter */
-static int pcache_filter_cmp( const void *v1, const void *v2 )
+/* compare the current value in each filter */
+static int pcache_filter_cmp( Filter *f1, Filter *f2 )
 {
-       const CachedQuery *q1 = v1, *q2 =v2;
        int rc, weight1, weight2;
 
-       switch( q1->first->f_choice ) {
+       switch( f1->f_choice ) {
        case LDAP_FILTER_PRESENT:
                weight1 = 0;
                break;
@@ -606,7 +605,7 @@ static int pcache_filter_cmp( const void *v1, const void *v2 )
        default:
                weight1 = 2;
        }
-       switch( q2->first->f_choice ) {
+       switch( f2->f_choice ) {
        case LDAP_FILTER_PRESENT:
                weight2 = 0;
                break;
@@ -621,56 +620,80 @@ static int pcache_filter_cmp( const void *v1, const void *v2 )
        rc = weight1 - weight2;
        if ( !rc ) {
                switch( weight1 ) {
-               case 0: return 0;
+               case 0:
+                       break;
                case 1:
-                       rc = lex_bvcmp( &q1->first->f_av_value, &q2->first->f_av_value );
+                       rc = lex_bvcmp( &f1->f_av_value, &f2->f_av_value );
                        break;
                case 2:
-                       if ( q1->first->f_choice == LDAP_FILTER_SUBSTRINGS ) {
+                       if ( f1->f_choice == LDAP_FILTER_SUBSTRINGS ) {
                                rc = 0;
-                               if ( !BER_BVISNULL( &q1->first->f_sub_initial )) {
-                                       if ( !BER_BVISNULL( &q2->first->f_sub_initial )) {
-                                               rc = lex_bvcmp( &q1->first->f_sub_initial,
-                                                       &q2->first->f_sub_initial );
+                               if ( !BER_BVISNULL( &f1->f_sub_initial )) {
+                                       if ( !BER_BVISNULL( &f2->f_sub_initial )) {
+                                               rc = lex_bvcmp( &f1->f_sub_initial,
+                                                       &f2->f_sub_initial );
                                        } else {
                                                rc = 1;
                                        }
-                               } else if ( !BER_BVISNULL( &q2->first->f_sub_initial )) {
+                               } else if ( !BER_BVISNULL( &f2->f_sub_initial )) {
                                        rc = -1;
                                }
                                if ( rc ) break;
-                               if ( q1->first->f_sub_any ) {
-                                       if ( q2->first->f_sub_any ) {
-                                               rc = lex_bvcmp( q1->first->f_sub_any,
-                                                       q2->first->f_sub_any );
+                               if ( f1->f_sub_any ) {
+                                       if ( f2->f_sub_any ) {
+                                               rc = lex_bvcmp( f1->f_sub_any,
+                                                       f2->f_sub_any );
                                        } else {
                                                rc = 1;
                                        }
-                               } else if ( q2->first->f_sub_any ) {
+                               } else if ( f2->f_sub_any ) {
                                        rc = -1;
                                }
                                if ( rc ) break;
-                               if ( !BER_BVISNULL( &q1->first->f_sub_final )) {
-                                       if ( !BER_BVISNULL( &q2->first->f_sub_final )) {
-                                               rc = lex_bvcmp( &q1->first->f_sub_final,
-                                                       &q2->first->f_sub_final );
+                               if ( !BER_BVISNULL( &f1->f_sub_final )) {
+                                       if ( !BER_BVISNULL( &f2->f_sub_final )) {
+                                               rc = lex_bvcmp( &f1->f_sub_final,
+                                                       &f2->f_sub_final );
                                        } else {
                                                rc = 1;
                                        }
-                               } else if ( !BER_BVISNULL( &q2->first->f_sub_final )) {
+                               } else if ( !BER_BVISNULL( &f2->f_sub_final )) {
                                        rc = -1;
                                }
                        } else {
-                               rc = lex_bvcmp( &q1->first->f_mr_value,
-                                       &q2->first->f_mr_value );
+                               rc = lex_bvcmp( &f1->f_mr_value,
+                                       &f2->f_mr_value );
                        }
                        break;
                }
+               if ( !rc ) {
+                       f1 = f1->f_next;
+                       f2 = f2->f_next;
+                       if ( f1 || f2 ) {
+                               if ( !f1 )
+                                       rc = -1;
+                               else if ( !f2 )
+                                       rc = 1;
+                               else {
+                                       while ( f1->f_choice == LDAP_FILTER_AND || f1->f_choice == LDAP_FILTER_OR )
+                                               f1 = f1->f_and;
+                                       while ( f2->f_choice == LDAP_FILTER_AND || f2->f_choice == LDAP_FILTER_OR )
+                                               f2 = f2->f_and;
+                                       rc = pcache_filter_cmp( f1, f2 );
+                               }
+                       }
+               }
        }
-
        return rc;
 }
 
+/* compare filters in each query */
+static int pcache_query_cmp( const void *v1, const void *v2 )
+{
+       const CachedQuery *q1 = v1, *q2 =v2;
+       return pcache_filter_cmp( q1->first, q2->first );
+}
+
 /* add query on top of LRU list */
 static void
 add_query_on_top (query_manager* qm, CachedQuery* qc)
@@ -922,7 +945,7 @@ find_filter( Operation *op, Avlnode *root, Filter *inputf, Filter *first )
                ptr = tavl_end( root, 1 );
                dir = TAVL_DIR_LEFT;
        } else {
-               ptr = tavl_find3( root, &cq, pcache_filter_cmp, &ret );
+               ptr = tavl_find3( root, &cq, pcache_query_cmp, &ret );
                dir = (first->f_choice == LDAP_FILTER_GE) ? TAVL_DIR_LEFT :
                        TAVL_DIR_RIGHT;
        }
@@ -1152,6 +1175,8 @@ free_query (CachedQuery* qc)
 {
        free(qc->q_uuid.bv_val);
        filter_free(qc->filter);
+       ldap_pvt_thread_rdwr_destroy( &qc->rwlock );
+       memset(qc, 0, sizeof(*qc));
        free(qc);
 }
 
@@ -1227,7 +1252,7 @@ add_query(
        new_cached_query->prev = NULL;
        new_cached_query->qbase = qbase;
        rc = tavl_insert( &qbase->scopes[query->scope], new_cached_query,
-               pcache_filter_cmp, avl_dup_error );
+               pcache_query_cmp, avl_dup_error );
        if ( rc == 0 ) {
                qbase->queries++;
                if (templ->query == NULL)
@@ -1241,6 +1266,7 @@ add_query(
                new_cached_query = find_filter( op, qbase->scopes[query->scope],
                                                        query->filter, first );
                filter_free( query->filter );
+               query->filter = NULL;
        }
        Debug( pcache_debug, "TEMPLATE %p QUERIES++ %d\n",
                        (void *) templ, templ->no_of_queries, 0 );
@@ -1273,7 +1299,7 @@ remove_from_template (CachedQuery* qc, QueryTemplate* template)
                qc->next->prev = qc->prev;
                qc->prev->next = qc->next;
        }
-       tavl_delete( &qc->qbase->scopes[qc->scope], qc, pcache_filter_cmp );
+       tavl_delete( &qc->qbase->scopes[qc->scope], qc, pcache_query_cmp );
        qc->qbase->queries--;
        if ( qc->qbase->queries == 0 ) {
                avl_delete( &template->qbase, qc->qbase, pcache_dn_cmp );
@@ -1579,7 +1605,7 @@ filter2template(
                (*filter_attrs)[*filter_cnt].an_desc = ad;
                (*filter_attrs)[*filter_cnt].an_name = ad->ad_cname;
                (*filter_attrs)[*filter_cnt].an_oc = NULL;
-               (*filter_attrs)[*filter_cnt].an_oc_exclude = 0;
+               (*filter_attrs)[*filter_cnt].an_flags = 0;
                BER_BVZERO( &(*filter_attrs)[*filter_cnt+1].an_name );
                (*filter_cnt)++;
                if ( ad == slap_schema.si_ad_objectClass )
@@ -1953,7 +1979,7 @@ pcache_op_cleanup( Operation *op, SlapReply *rs ) {
                Entry *e;
 
                /* don't return more entries than requested by the client */
-               if ( si->slimit && rs->sr_nentries >= si->slimit ) {
+               if ( si->slimit > 0 && rs->sr_nentries >= si->slimit ) {
                        si->slimit_exceeded = 1;
                }
 
@@ -1970,6 +1996,19 @@ pcache_op_cleanup( Operation *op, SlapReply *rs ) {
                                goto over;
                        }
 
+                       /* check for malformed entries: attrs with no values */
+                       {
+                               Attribute *a = rs->sr_entry->e_attrs;
+                               for (; a; a=a->a_next) {
+                                       if ( !a->a_numvals ) {
+                                               Debug( pcache_debug, "%s: query not cacheable because of attrs without values in DN \"%s\" (%s)\n",
+                                               op->o_log_prefix, rs->sr_entry->e_name.bv_val,
+                                               a->a_desc->ad_cname.bv_val );
+                                               goto over;
+                                       }
+                               }
+                       }
+
                        if ( si->count < si->max ) {
                                si->count++;
                                e = entry_dup( rs->sr_entry );
@@ -2145,8 +2184,8 @@ add_filter_attrs(
                (*new_attrs)[i].an_desc = attrs->attrs[i].an_desc;
        }
        BER_BVZERO( &(*new_attrs)[i].an_name );
-       alluser = an_find(*new_attrs, &AllUser);
-       allop = an_find(*new_attrs, &AllOper);
+       alluser = an_find( *new_attrs, slap_bv_all_user_attrs );
+       allop = an_find( *new_attrs, slap_bv_all_operational_attrs );
 
        j = i;
        for ( i=0; i<fattr_cnt; i++ ) {
@@ -2163,14 +2202,14 @@ add_filter_attrs(
                (*new_attrs)[j].an_name = filter_attrs[i].an_name;
                (*new_attrs)[j].an_desc = filter_attrs[i].an_desc;
                (*new_attrs)[j].an_oc = NULL;
-               (*new_attrs)[j].an_oc_exclude = 0;
+               (*new_attrs)[j].an_flags = 0;
                j++;
        }
        if ( addoc ) {
                (*new_attrs)[j].an_name = slap_schema.si_ad_objectClass->ad_cname;
                (*new_attrs)[j].an_desc = slap_schema.si_ad_objectClass;
                (*new_attrs)[j].an_oc = NULL;
-               (*new_attrs)[j].an_oc_exclude = 0;
+               (*new_attrs)[j].an_flags = 0;
                j++;
        }
        BER_BVZERO( &(*new_attrs)[j].an_name );
@@ -2316,6 +2355,9 @@ pcache_op_search(
                return rs->sr_err;
        }
 
+       /* pickup runtime ACL changes */
+       cm->db.be_acl = op->o_bd->be_acl;
+
        tempstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len+1, op->o_tmpmemctx );
        tempstr.bv_len = 0;
        if ( filter2template( op, op->ors_filter, &tempstr, &filter_attrs,
@@ -2357,8 +2399,6 @@ pcache_op_search(
        op->o_tmpfree( tempstr.bv_val, op->o_tmpmemctx );
 
        if (answerable) {
-               /* Need to clear the callbacks of the original operation,
-                * in case there are other overlays */
                BackendDB       *save_bd = op->o_bd;
                slap_callback   *save_cb = op->o_callback;
 
@@ -2371,7 +2411,12 @@ pcache_op_search(
                        send_ldap_result( op, rs );
                } else {
                        op->o_bd = &cm->db;
-                       op->o_callback = NULL;
+                       if ( cm->response_cb == PCACHE_RESPONSE_CB_TAIL ) {
+                               /* The cached entry was already processed by any
+                                * other overlays, so don't let it get processed again.
+                                */
+                               op->o_callback = NULL;
+                       }
                        i = cm->db.bd_info->bi_op_search( op, rs );
                }
                ldap_pvt_thread_rdwr_runlock(&answerable->rwlock);
@@ -2421,7 +2466,7 @@ pcache_op_search(
                si->slimit = 0;
                si->slimit_exceeded = 0;
                si->caching_reason = PC_IGNORE;
-               if ( op->ors_slimit && op->ors_slimit < cm->num_entries_limit ) {
+               if ( op->ors_slimit > 0 && op->ors_slimit < cm->num_entries_limit ) {
                        si->slimit = op->ors_slimit;
                        op->ors_slimit = cm->num_entries_limit;
                }
@@ -2711,7 +2756,8 @@ pc_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
 
        /* FIXME: should not hardcode "olcDatabase" here */
        bv.bv_len = snprintf( ca->cr_msg, sizeof( ca->cr_msg ),
-               "olcDatabase=%s", cm->db.bd_info->bi_type );
+               "olcDatabase=" SLAP_X_ORDERED_FMT "%s",
+               0, cm->db.bd_info->bi_type );
        if ( bv.bv_len >= sizeof( ca->cr_msg ) ) {
                return -1;
        }
@@ -2993,7 +3039,7 @@ pc_cf_gen( ConfigArgs *c )
                                        attr_name->an_name = attr_name->an_desc->ad_cname;
                                }
                                attr_name->an_oc = NULL;
-                               attr_name->an_oc_exclude = 0;
+                               attr_name->an_flags = 0;
                                if ( attr_name->an_desc == slap_schema.si_ad_objectClass )
                                        qm->attr_sets[num].flags |= PC_GOT_OC;
                                attr_name++;
@@ -3145,7 +3191,7 @@ pcache_db_init(
        cm->db = *be;
        SLAP_DBFLAGS(&cm->db) |= SLAP_DBFLAG_NO_SCHEMA_CHECK;
        cm->db.be_private = NULL;
-       cm->db.be_pcl_mutexp = &cm->db.be_pcl_mutex;
+       cm->db.bd_self = &cm->db;
        cm->qm = qm;
        cm->numattrsets = 0;
        cm->num_entries_limit = 5;