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[openldap] / servers / slapd / controls.c
index 7489fb66a457540f162b7640b574ca61c9bf2f33..5699329c6efa64eb0c135f62086310cff94d8831 100644 (file)
@@ -1,13 +1,18 @@
 /* $OpenLDAP$ */
-/* 
- * Copyright 1999-2002 The OpenLDAP Foundation.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2005 The OpenLDAP Foundation.
  * All rights reserved.
  *
- * Redistribution and use in source and binary forms are permitted only
- * as authorized by the OpenLDAP Public License.  A copy of this
- * license is available at http://www.OpenLDAP.org/license.html or
- * in file LICENSE in the top-level directory of the distribution.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
+
 #include "portable.h"
 
 #include <stdio.h>
 
 #include "../../libraries/liblber/lber-int.h"
 
-#define SLAP_CTRL_FRONTEND                     0x80000000U
-#define SLAP_CTRL_FRONTEND_SEARCH      0x01000000U     /* for NOOP */
-
-#define SLAP_CTRL_OPFLAGS                      0x0000FFFFU
-#define SLAP_CTRL_ABANDON                      0x00000001U
-#define SLAP_CTRL_ADD                          0x00002002U
-#define SLAP_CTRL_BIND                         0x00000004U
-#define SLAP_CTRL_COMPARE                      0x00001008U
-#define SLAP_CTRL_DELETE                       0x00002010U
-#define SLAP_CTRL_MODIFY                       0x00002020U
-#define SLAP_CTRL_RENAME                       0x00002040U
-#define SLAP_CTRL_SEARCH                       0x00001080U
-#define SLAP_CTRL_UNBIND                       0x00000100U
-
-#define SLAP_CTRL_INTROGATE    (SLAP_CTRL_COMPARE|SLAP_CTRL_SEARCH)
-#define SLAP_CTRL_UPDATE \
-       (SLAP_CTRL_ADD|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME)
-#define SLAP_CTRL_ACCESS       (SLAP_CTRL_INTROGATE|SLAP_CTRL_UPDATE)
-
-typedef int (SLAP_CTRL_PARSE_FN) LDAP_P((
-       Connection *conn,
-       Operation *op,
-       LDAPControl *ctrl,
-       const char **text ));
-
+static SLAP_CTRL_PARSE_FN parseAssert;
+static SLAP_CTRL_PARSE_FN parsePreRead;
+static SLAP_CTRL_PARSE_FN parsePostRead;
+static SLAP_CTRL_PARSE_FN parseProxyAuthz;
+#ifdef LDAP_DEVEL
+static SLAP_CTRL_PARSE_FN parseManageDIT;
+#endif
 static SLAP_CTRL_PARSE_FN parseManageDSAit;
-static SLAP_CTRL_PARSE_FN parseSubentries;
+static SLAP_CTRL_PARSE_FN parseModifyIncrement;
 static SLAP_CTRL_PARSE_FN parseNoOp;
 static SLAP_CTRL_PARSE_FN parsePagedResults;
+#ifdef LDAP_DEVEL
+static SLAP_CTRL_PARSE_FN parseSortedResults;
+#endif
 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
-
-#ifdef LDAP_CLIENT_UPDATE
-static SLAP_CTRL_PARSE_FN parseClientUpdate;
-#endif /* LDAP_CLIENT_UPDATE */
+static SLAP_CTRL_PARSE_FN parsePermissiveModify;
+static SLAP_CTRL_PARSE_FN parseDomainScope;
+static SLAP_CTRL_PARSE_FN parseTreeDelete;
+static SLAP_CTRL_PARSE_FN parseSearchOptions;
+static SLAP_CTRL_PARSE_FN parseSubentries;
 
 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
 
-static struct slap_control {
+const struct berval slap_pre_read_bv = BER_BVC(LDAP_CONTROL_PRE_READ);
+const struct berval slap_post_read_bv = BER_BVC(LDAP_CONTROL_POST_READ);
+
+struct slap_control_ids slap_cids;
+
+struct slap_control {
+       /* Control OID */
        char *sc_oid;
+
+       /* The controlID for this control */
+       int sc_cid;
+
+       /* Operations supported by control */
        slap_mask_t sc_mask;
+
+       /* Extended operations supported by control */
        char **sc_extendedops;
+
+       /* Control parsing callback */
        SLAP_CTRL_PARSE_FN *sc_parse;
 
-} supportedControls[] = {
-       { LDAP_CONTROL_MANAGEDSAIT,
-               SLAP_CTRL_ACCESS, NULL,
-               parseManageDSAit },
+       LDAP_SLIST_ENTRY(slap_control) sc_next;
+};
+
+static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
+       = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
+
+/*
+ * all known request control OIDs should be added to this list
+ */
+/*
+ * NOTE: initialize num_known_controls to 1 so that cid = 0 always
+ * addresses an undefined control; this allows to safely test for 
+ * well known controls even if they are not registered, e.g. if 
+ * they get moved to modules.  An example is sc_LDAPsync, which 
+ * is implemented in the syncprov overlay and thus, if configured 
+ * as dynamic module, may not be registered.  One side effect is that 
+ * slap_known_controls[0] == NULL, so it should always be used 
+ * starting from 1.
+ * FIXME: should we define the "undefined control" oid?
+ */
+char *slap_known_controls[SLAP_MAX_CIDS+1];
+static int num_known_controls = 1;
+
+static char *proxy_authz_extops[] = {
+       LDAP_EXOP_MODIFY_PASSWD,
+       LDAP_EXOP_X_WHO_AM_I,
+       NULL
+};
+
+static struct slap_control control_defs[] = {
+       {  LDAP_CONTROL_ASSERT,
+               (int)offsetof(struct slap_control_ids, sc_assert),
+               SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
+               parseAssert, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { LDAP_CONTROL_PRE_READ,
+               (int)offsetof(struct slap_control_ids, sc_preRead),
+               SLAP_CTRL_HIDE|SLAP_CTRL_DELETE|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
+               parsePreRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { LDAP_CONTROL_POST_READ,
+               (int)offsetof(struct slap_control_ids, sc_postRead),
+               SLAP_CTRL_HIDE|SLAP_CTRL_ADD|SLAP_CTRL_MODIFY|SLAP_CTRL_RENAME, NULL,
+               parsePostRead, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { LDAP_CONTROL_VALUESRETURNFILTER,
+               (int)offsetof(struct slap_control_ids, sc_valuesReturnFilter),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
+               parseValuesReturnFilter, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { LDAP_CONTROL_PAGEDRESULTS,
+               (int)offsetof(struct slap_control_ids, sc_pagedResults),
+               SLAP_CTRL_SEARCH, NULL,
+               parsePagedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#ifdef LDAP_DEVEL
+       { LDAP_CONTROL_SORTREQUEST,
+               (int)offsetof(struct slap_control_ids, sc_sortedResults),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH|SLAP_CTRL_HIDE, NULL,
+               parseSortedResults, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#endif
+#ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
+       { LDAP_CONTROL_X_DOMAIN_SCOPE,
+               (int)offsetof(struct slap_control_ids, sc_domainScope),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
+               parseDomainScope, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#endif
+#ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
+       { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
+               (int)offsetof(struct slap_control_ids, sc_permissiveModify),
+               SLAP_CTRL_MODIFY, NULL,
+               parsePermissiveModify, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#endif
+#ifdef SLAP_CONTROL_X_TREE_DELETE
+       { LDAP_CONTROL_X_TREE_DELETE,
+               (int)offsetof(struct slap_control_ids, sc_treeDelete),
+               SLAP_CTRL_HIDE|SLAP_CTRL_DELETE, NULL,
+               parseTreeDelete, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#endif
+#ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
+       { LDAP_CONTROL_X_SEARCH_OPTIONS,
+               (int)offsetof(struct slap_control_ids, sc_searchOptions),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_SEARCH, NULL,
+               parseSearchOptions, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#endif
 #ifdef LDAP_CONTROL_SUBENTRIES
        { LDAP_CONTROL_SUBENTRIES,
+               (int)offsetof(struct slap_control_ids, sc_subentries),
                SLAP_CTRL_SEARCH, NULL,
-               parseSubentries },
+               parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 #endif
-#ifdef LDAP_CONTROL_NOOP
        { LDAP_CONTROL_NOOP,
-               SLAP_CTRL_ACCESS, NULL,
-               parseNoOp },
+               (int)offsetof(struct slap_control_ids, sc_noOp),
+               SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, NULL,
+               parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+#ifdef LDAP_CONTROL_MODIFY_INCREMENT
+       { LDAP_CONTROL_MODIFY_INCREMENT,
+               (int)offsetof(struct slap_control_ids, sc_modifyIncrement),
+               SLAP_CTRL_HIDE|SLAP_CTRL_MODIFY, NULL,
+               parseModifyIncrement, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 #endif
-#ifdef LDAP_CONTROL_PAGEDRESULTS_REQUEST
-       { LDAP_CONTROL_PAGEDRESULTS_REQUEST,
-               SLAP_CTRL_SEARCH, NULL,
-               parsePagedResults },
-#endif
-#ifdef LDAP_CONTROL_VALUESRETURNFILTER
-       { LDAP_CONTROL_VALUESRETURNFILTER,
-               SLAP_CTRL_SEARCH, NULL,
-               parseValuesReturnFilter },
+#ifdef LDAP_DEVEL
+       { LDAP_CONTROL_MANAGEDIT,
+               (int)offsetof(struct slap_control_ids, sc_manageDIT),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_UPDATE, NULL,
+               parseManageDIT, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 #endif
-#ifdef LDAP_CLIENT_UPDATE
-       { LDAP_CONTROL_CLIENT_UPDATE,
-               SLAP_CTRL_SEARCH, NULL,
-               parseClientUpdate },
-#endif /* LDAP_CLIENT_UPDATE */
-       { NULL }
+       { LDAP_CONTROL_MANAGEDSAIT,
+               (int)offsetof(struct slap_control_ids, sc_manageDSAit),
+               SLAP_CTRL_ACCESS, NULL,
+               parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { LDAP_CONTROL_PROXY_AUTHZ,
+               (int)offsetof(struct slap_control_ids, sc_proxyAuthz),
+               SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS, proxy_authz_extops,
+               parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
+       { NULL, 0, 0, NULL, 0, LDAP_SLIST_ENTRY_INITIALIZER(next) }
 };
 
-char *
-get_supported_ctrl(int index)
+/*
+ * Register a supported control.
+ *
+ * This can be called by an OpenLDAP plugin or, indirectly, by a
+ * SLAPI plugin calling slapi_register_supported_control().
+ */
+int
+register_supported_control(const char *controloid,
+       slap_mask_t controlmask,
+       char **controlexops,
+       SLAP_CTRL_PARSE_FN *controlparsefn,
+       int *controlcid)
+{
+       struct slap_control *sc;
+       int i;
+
+       if ( num_known_controls >= SLAP_MAX_CIDS ) {
+               Debug( LDAP_DEBUG_ANY, "Too many controls registered."
+                       " Recompile slapd with SLAP_MAX_CIDS defined > %d\n",
+               SLAP_MAX_CIDS, 0, 0 );
+               return LDAP_OTHER;
+       }
+
+       if ( controloid == NULL ) return LDAP_PARAM_ERROR;
+
+       /* sanity check - should never happen */
+       for ( i = 0; slap_known_controls[ i ]; i++ ) {
+               if ( strcmp( controloid, slap_known_controls[ i ] ) == 0 ) {
+                       Debug( LDAP_DEBUG_ANY,
+                               "Control %s already registered.\n",
+                               controloid, 0, 0 );
+                       return LDAP_PARAM_ERROR;
+               }
+       }
+
+       sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
+       if ( sc == NULL ) return LDAP_NO_MEMORY;
+
+       sc->sc_oid = ch_strdup( controloid );
+       sc->sc_mask = controlmask;
+       if ( controlexops != NULL ) {
+               sc->sc_extendedops = ldap_charray_dup( controlexops );
+               if ( sc->sc_extendedops == NULL ) {
+                       ch_free( sc );
+                       return LDAP_NO_MEMORY;
+               }
+       } else {
+               sc->sc_extendedops = NULL;
+       }
+       sc->sc_parse = controlparsefn;
+
+       if ( controlcid ) *controlcid = num_known_controls;
+       sc->sc_cid = num_known_controls;
+
+       /* Update slap_known_controls, too. */
+       slap_known_controls[num_known_controls-1] = sc->sc_oid;
+       slap_known_controls[num_known_controls++] = NULL;
+
+       LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
+       LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
+       return LDAP_SUCCESS;
+}
+
+/*
+ * One-time initialization of internal controls.
+ */
+int
+slap_controls_init( void )
+{
+       int i, rc;
+       struct slap_control *sc;
+
+       rc = LDAP_SUCCESS;
+
+       for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
+               int *cid = (int *)(((char *)&slap_cids) + control_defs[i].sc_cid );
+               rc = register_supported_control( control_defs[i].sc_oid,
+                       control_defs[i].sc_mask, control_defs[i].sc_extendedops,
+                       control_defs[i].sc_parse, cid );
+               if ( rc != LDAP_SUCCESS ) break;
+       }
+
+       return rc;
+}
+
+/*
+ * Free memory associated with list of supported controls.
+ */
+void
+controls_destroy( void )
+{
+       struct slap_control *sc;
+
+       while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
+               sc = LDAP_SLIST_FIRST(&controls_list);
+               LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
+
+               ch_free( sc->sc_oid );
+               if ( sc->sc_extendedops != NULL ) {
+                       ldap_charray_free( sc->sc_extendedops );
+               }
+               ch_free( sc );
+       }
+}
+
+/*
+ * Format the supportedControl attribute of the root DSE,
+ * detailing which controls are supported by the directory
+ * server.
+ */
+int
+controls_root_dse_info( Entry *e )
 {
-       return supportedControls[index].sc_oid;
+       AttributeDescription *ad_supportedControl
+               = slap_schema.si_ad_supportedControl;
+       struct berval vals[2];
+       struct slap_control *sc;
+
+       vals[1].bv_val = NULL;
+       vals[1].bv_len = 0;
+
+       LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
+               if( sc->sc_mask & SLAP_CTRL_HIDE ) continue;
+
+               vals[0].bv_val = sc->sc_oid;
+               vals[0].bv_len = strlen( sc->sc_oid );
+
+               if ( attr_merge( e, ad_supportedControl, vals, NULL ) ) {
+                       return -1;
+               }
+       }
+
+       return 0;
 }
 
+/*
+ * Return a list of OIDs and operation masks for supported
+ * controls. Used by SLAPI.
+ */
+int
+get_supported_controls(char ***ctrloidsp,
+       slap_mask_t **ctrlmasks)
+{
+       int i, n;
+       char **oids;
+       slap_mask_t *masks;
+       int rc;
+       struct slap_control *sc;
+
+       n = 0;
+
+       LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
+               n++;
+       }
+
+       if ( n == 0 ) {
+               *ctrloidsp = NULL;
+               *ctrlmasks = NULL;
+               return LDAP_SUCCESS;
+       }
+
+       oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
+       if ( oids == NULL ) {
+               return LDAP_NO_MEMORY;
+       }
+       masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
+       if  ( masks == NULL ) {
+               ch_free( oids );
+               return LDAP_NO_MEMORY;
+       }
+
+       n = 0;
+
+       LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
+               oids[n] = ch_strdup( sc->sc_oid );
+               masks[n] = sc->sc_mask;
+               n++;
+       }
+       oids[n] = NULL;
+       masks[n] = 0;
+
+       *ctrloidsp = oids;
+       *ctrlmasks = masks;
+
+       return LDAP_SUCCESS;
+}
+
+/*
+ * Find a control given its OID.
+ */
 static struct slap_control *
 find_ctrl( const char *oid )
 {
-       int i;
-       for( i=0; supportedControls[i].sc_oid; i++ ) {
-               if( strcmp( oid, supportedControls[i].sc_oid ) == 0 ) {
-                       return &supportedControls[i];
+       struct slap_control *sc;
+
+       LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
+               if ( strcmp( oid, sc->sc_oid ) == 0 ) {
+                       return sc;
                }
        }
+
        return NULL;
 }
 
+int
+slap_find_control_id(
+       const char *oid,
+       int *cid )
+{
+       struct slap_control *ctrl = find_ctrl( oid );
+       if ( ctrl ) {
+               if ( cid ) *cid = ctrl->sc_cid;
+               return LDAP_SUCCESS;
+       }
+       return LDAP_CONTROL_NOT_FOUND;
+}
+
+int
+slap_global_control( Operation *op, const char *oid, int *cid )
+{
+       struct slap_control *ctrl = find_ctrl( oid );
+
+       if ( ctrl == NULL ) {
+               /* should not be reachable */
+               Debug( LDAP_DEBUG_ANY,
+                       "slap_global_control: unrecognized control: %s\n",      
+                       oid, 0, 0 );
+               return LDAP_CONTROL_NOT_FOUND;
+       }
+
+       if ( cid ) *cid = ctrl->sc_cid;
+
+       if ( ( ctrl->sc_mask & SLAP_CTRL_GLOBAL ) ||
+               ( ( op->o_tag & LDAP_REQ_SEARCH ) &&
+               ( ctrl->sc_mask & SLAP_CTRL_GLOBAL_SEARCH ) ) )
+       {
+               return LDAP_COMPARE_TRUE;
+       }
+
+       Debug( LDAP_DEBUG_TRACE,
+               "slap_global_control: unavailable control: %s\n",      
+               oid, 0, 0 );
+
+       return LDAP_COMPARE_FALSE;
+}
+
+void slap_free_ctrls(
+       Operation *op,
+       LDAPControl **ctrls )
+{
+       int i;
+
+       for (i=0; ctrls[i]; i++) {
+               op->o_tmpfree(ctrls[i], op->o_tmpmemctx );
+       }
+       op->o_tmpfree( ctrls, op->o_tmpmemctx );
+}
+
 int get_ctrls(
-       Connection *conn,
        Operation *op,
+       SlapReply *rs,
        int sendres )
 {
        int nctrls = 0;
@@ -123,44 +450,41 @@ int get_ctrls(
        char *opaque;
        BerElement *ber = op->o_ber;
        struct slap_control *sc;
-       int rc = LDAP_SUCCESS;
-       const char *errmsg = NULL;
+       struct berval bv;
 
        len = ber_pvt_ber_remaining(ber);
 
        if( len == 0) {
                /* no controls */
-               rc = LDAP_SUCCESS;
-               return rc;
+               rs->sr_err = LDAP_SUCCESS;
+               return rs->sr_err;
        }
 
        if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
                if( tag == LBER_ERROR ) {
-                       rc = SLAPD_DISCONNECT;
-                       errmsg = "unexpected data in PDU";
+                       rs->sr_err = SLAPD_DISCONNECT;
+                       rs->sr_text = "unexpected data in PDU";
                }
 
                goto return_results;
        }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
-#else
-       Debug( LDAP_DEBUG_TRACE, "=> get_ctrls\n", 0, 0, 0 );
-#endif
+       Debug( LDAP_DEBUG_TRACE,
+               "=> get_ctrls\n", 0, 0, 0 );
+
        if( op->o_protocol < LDAP_VERSION3 ) {
-               rc = SLAPD_DISCONNECT;
-               errmsg = "controls require LDAPv3";
+               rs->sr_err = SLAPD_DISCONNECT;
+               rs->sr_text = "controls require LDAPv3";
                goto return_results;
        }
 
        /* one for first control, one for termination */
-       op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
+       op->o_ctrls = op->o_tmpalloc( 2 * sizeof(LDAPControl *), op->o_tmpmemctx );
 
 #if 0
        if( op->ctrls == NULL ) {
-               rc = LDAP_NO_MEMORY;
-               errmsg = "no memory";
+               rs->sr_err = LDAP_NO_MEMORY;
+               rs->sr_text = "no memory";
                goto return_results;
        }
 #endif
@@ -175,24 +499,14 @@ int get_ctrls(
                LDAPControl *c;
                LDAPControl **tctrls;
 
-               c = ch_calloc( 1, sizeof(LDAPControl) );
-
-#if 0
-               if( c == NULL ) {
-                       ldap_controls_free(op->o_ctrls);
-                       op->o_ctrls = NULL;
-
-                       rc = LDAP_NO_MEMORY;
-                       errmsg = "no memory";
-                       goto return_results;
-               }
-#endif
+               c = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
+               memset(c, 0, sizeof(LDAPControl));
 
                /* allocate pointer space for current controls (nctrls)
                 * + this control + extra NULL
                 */
-               tctrls = ch_realloc( op->o_ctrls,
-                       (nctrls+2) * sizeof(LDAPControl *));
+               tctrls = op->o_tmprealloc( op->o_ctrls,
+                       (nctrls+2) * sizeof(LDAPControl *), op->o_tmpmemctx );
 
 #if 0
                if( tctrls == NULL ) {
@@ -200,8 +514,8 @@ int get_ctrls(
                        ldap_controls_free(op->o_ctrls);
                        op->o_ctrls = NULL;
 
-                       rc = LDAP_NO_MEMORY;
-                       errmsg = "no memory";
+                       rs->sr_err = LDAP_NO_MEMORY;
+                       rs->sr_text = "no memory";
                        goto return_results;
                }
 #endif
@@ -210,20 +524,28 @@ int get_ctrls(
                op->o_ctrls[nctrls++] = c;
                op->o_ctrls[nctrls] = NULL;
 
-               tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
+               tag = ber_scanf( ber, "{m" /*}*/, &bv );
+               c->ldctl_oid = bv.bv_val;
 
                if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
-                               conn->c_connid, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
                                0, 0, 0 );
-#endif
-                       ldap_controls_free( op->o_ctrls );
+
+                       slap_free_ctrls( op, op->o_ctrls );
                        op->o_ctrls = NULL;
-                       rc = SLAPD_DISCONNECT;
-                       errmsg = "decoding controls error";
+                       rs->sr_err = SLAPD_DISCONNECT;
+                       rs->sr_text = "decoding controls error";
+                       goto return_results;
+
+               } else if( c->ldctl_oid == NULL ) {
+                       Debug( LDAP_DEBUG_TRACE,
+                               "get_ctrls: conn %lu got emtpy OID.\n",
+                               op->o_connid, 0, 0 );
+
+                       slap_free_ctrls( op, op->o_ctrls );
+                       op->o_ctrls = NULL;
+                       rs->sr_err = LDAP_PROTOCOL_ERROR;
+                       rs->sr_text = "OID field is empty";
                        goto return_results;
                }
 
@@ -234,18 +556,12 @@ int get_ctrls(
                        tag = ber_scanf( ber, "b", &crit );
 
                        if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, INFO, 
-                                       "get_ctrls: conn %lu get crit failed.\n", 
-                                       conn->c_connid, 0, 0 );
-#else
                                Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
                                        0, 0, 0 );
-#endif
-                               ldap_controls_free( op->o_ctrls );
+                               slap_free_ctrls( op, op->o_ctrls );
                                op->o_ctrls = NULL;
-                               rc = SLAPD_DISCONNECT;
-                               errmsg = "decoding controls error";
+                               rs->sr_err = SLAPD_DISCONNECT;
+                               rs->sr_text = "decoding controls error";
                                goto return_results;
                        }
 
@@ -254,40 +570,24 @@ int get_ctrls(
                }
 
                if( tag == LBER_OCTETSTRING ) {
-                       tag = ber_scanf( ber, "o", &c->ldctl_value );
+                       tag = ber_scanf( ber, "m", &c->ldctl_value );
 
                        if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
-                                       "%s (%scritical): get value failed.\n",
-                                       conn->c_connid, c->ldctl_oid ? c->ldctl_oid : "(NULL)",
-                                       c->ldctl_iscritical ? "" : "non" );
-#else
                                Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
                                        "%s (%scritical): get value failed.\n",
-                                       conn->c_connid,
-                                       c->ldctl_oid ? c->ldctl_oid : "(NULL)",
+                                       op->o_connid, c->ldctl_oid,
                                        c->ldctl_iscritical ? "" : "non" );
-#endif
-                               ldap_controls_free( op->o_ctrls );
+                               slap_free_ctrls( op, op->o_ctrls );
                                op->o_ctrls = NULL;
-                               rc = SLAPD_DISCONNECT;
-                               errmsg = "decoding controls error";
+                               rs->sr_err = SLAPD_DISCONNECT;
+                               rs->sr_text = "decoding controls error";
                                goto return_results;
                        }
                }
 
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, INFO, 
-                       "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
-                       conn->c_connid, c->ldctl_oid ? c->ldctl_oid : "(NULL)",
-                       c->ldctl_iscritical ? "" : "non" );
-#else
-               Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: oid=\"%s\" (%scritical)\n",
-                       c->ldctl_oid ? c->ldctl_oid : "(NULL)",
-                       c->ldctl_iscritical ? "" : "non",
-                       0 );
-#endif
+               Debug( LDAP_DEBUG_TRACE,
+                       "=> get_ctrls: oid=\"%s\" (%scritical)\n",
+                       c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 
                sc = find_ctrl( c->ldctl_oid );
                if( sc != NULL ) {
@@ -318,174 +618,274 @@ int get_ctrls(
                        case LDAP_REQ_UNBIND:
                                tagmask = SLAP_CTRL_UNBIND;
                                break;
+                       case LDAP_REQ_ABANDON:
+                               tagmask = SLAP_CTRL_ABANDON;
+                               break;
                        case LDAP_REQ_EXTENDED:
-                               /* FIXME: check list of extended operations */
-                               tagmask = ~0U;
+                               tagmask=~0L;
+                               assert( op->ore_reqoid.bv_val != NULL );
+                               if( sc->sc_extendedops != NULL ) {
+                                       int i;
+                                       for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
+                                               if( strcmp( op->ore_reqoid.bv_val,
+                                                       sc->sc_extendedops[i] ) == 0 )
+                                               {
+                                                       tagmask=0L;
+                                                       break;
+                                               }
+                                       }
+                               }
                                break;
                        default:
-                               rc = LDAP_OTHER;
-                               errmsg = "controls internal error";
+                               rs->sr_err = LDAP_OTHER;
+                               rs->sr_text = "controls internal error";
                                goto return_results;
                        }
 
                        if (( sc->sc_mask & tagmask ) == tagmask ) {
                                /* available extension */
+                               int     rc;
 
                                if( !sc->sc_parse ) {
-                                       rc = LDAP_OTHER;
-                                       errmsg = "not yet implemented";
+                                       rs->sr_err = LDAP_OTHER;
+                                       rs->sr_text = "not yet implemented";
                                        goto return_results;
                                }
 
-                               rc = sc->sc_parse( conn, op, c, &errmsg );
-
-                               if( rc != LDAP_SUCCESS ) goto return_results;
-
-                               if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
-                                       /* kludge to disable backend_control() check */
-                                       c->ldctl_iscritical = 0;
-
-                               } else if ( tagmask == SLAP_CTRL_SEARCH &&
-                                       sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
-                               {
-                                       /* kludge to disable backend_control() check */
-                                       c->ldctl_iscritical = 0;
+                               rc = sc->sc_parse( op, rs, c );
+                               if ( rc ) {
+                                       assert( rc != LDAP_UNAVAILABLE_CRITICAL_EXTENSION );
+                                       rs->sr_err = rc;
+                                       goto return_results;
                                }
 
                        } else if( c->ldctl_iscritical ) {
                                /* unavailable CRITICAL control */
-                               rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
-                               errmsg = "critical extension is unavailable";
+                               rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
+                               rs->sr_text = "critical extension is unavailable";
                                goto return_results;
                        }
 
                } else if( c->ldctl_iscritical ) {
                        /* unrecognized CRITICAL control */
-                       rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
-                       errmsg = "critical extension is not recognized";
+                       rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
+                       rs->sr_text = "critical extension is not recognized";
                        goto return_results;
                }
+next_ctrl:;
        }
 
 return_results:
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, RESULTS, 
-               "get_ctrls: n=%d rc=%d err=%s\n", nctrls, rc, errmsg ? errmsg : "" );
-#else
-       Debug( LDAP_DEBUG_TRACE, "<= get_ctrls: n=%d rc=%d err=%s\n",
-               nctrls, rc, errmsg ? errmsg : "");
-#endif
-
-       if( sendres && rc != LDAP_SUCCESS ) {
-               if( rc == SLAPD_DISCONNECT ) {
-                       send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
+       Debug( LDAP_DEBUG_TRACE,
+               "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
+               nctrls, rs->sr_err, rs->sr_text ? rs->sr_text : "");
+
+       if( sendres && rs->sr_err != LDAP_SUCCESS ) {
+               if( rs->sr_err == SLAPD_DISCONNECT ) {
+                       rs->sr_err = LDAP_PROTOCOL_ERROR;
+                       send_ldap_disconnect( op, rs );
+                       rs->sr_err = SLAPD_DISCONNECT;
                } else {
-                       send_ldap_result( conn, op, rc,
-                               NULL, errmsg, NULL, NULL );
+                       send_ldap_result( op, rs );
                }
        }
 
-       return rc;
+       return rs->sr_err;
 }
 
+static int parseModifyIncrement (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+#if 0
+       if ( op->o_modifyIncrement != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "modifyIncrement control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+#endif
+
+       if ( ctrl->ldctl_value.bv_len ) {
+               rs->sr_text = "modifyIncrement control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+#if 0
+       op->o_modifyIncrement = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+#endif
+
+       return LDAP_SUCCESS;
+}
+
+#ifdef LDAP_DEVEL
+static int parseManageDIT (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       if ( op->o_managedit != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "manageDIT control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( ctrl->ldctl_value.bv_len ) {
+               rs->sr_text = "manageDIT control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       op->o_managedit = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       return LDAP_SUCCESS;
+}
+#endif
+
 static int parseManageDSAit (
-       Connection *conn,
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       if ( op->o_managedsait != SLAP_NO_CONTROL ) {
-               *text = "manageDSAit control specified multiple times";
+       if ( op->o_managedsait != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "manageDSAit control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
        if ( ctrl->ldctl_value.bv_len ) {
-               *text = "manageDSAit control value not empty";
+               rs->sr_text = "manageDSAit control value not empty";
                return LDAP_PROTOCOL_ERROR;
        }
 
        op->o_managedsait = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
 
        return LDAP_SUCCESS;
 }
 
-#ifdef LDAP_CONTROL_SUBENTRIES
-static int parseSubentries (
-       Connection *conn,
+static int parseProxyAuthz (
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       if ( op->o_subentries != SLAP_NO_CONTROL ) {
-               *text = "subentries control specified multiple times";
+       int             rc;
+       struct berval   dn = BER_BVNULL;
+
+       if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "proxy authorization control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       /* FIXME: should use BER library */
-       if( ( ctrl->ldctl_value.bv_len != 3 )
-               && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
-               && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
-       {
-               *text = "subentries control value encoding is bogus";
-               return LDAP_PROTOCOL_ERROR;
+       op->o_proxy_authz = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       Debug( LDAP_DEBUG_ARGS,
+               "parseProxyAuthz: conn %lu authzid=\"%s\"\n", 
+               op->o_connid,
+               ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
+               0 );
+
+       if ( ctrl->ldctl_value.bv_len == 0 ) {
+               Debug( LDAP_DEBUG_TRACE,
+                       "parseProxyAuthz: conn=%lu anonymous\n", 
+                       op->o_connid, 0, 0 );
+
+               /* anonymous */
+               op->o_ndn.bv_val[ 0 ] = '\0';
+               op->o_ndn.bv_len = 0;
+
+               op->o_dn.bv_val[ 0 ] = '\0';
+               op->o_dn.bv_len = 0;
+
+               return LDAP_SUCCESS;
        }
 
-       op->o_subentries = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+       rc = slap_sasl_getdn( op->o_conn, op, &ctrl->ldctl_value,
+                       NULL, &dn, SLAP_GETDN_AUTHZID );
+
+       /* FIXME: empty DN in proxyAuthz control should be legal... */
+       if( rc != LDAP_SUCCESS /* || !dn.bv_len */ ) {
+               if ( dn.bv_val ) {
+                       ch_free( dn.bv_val );
+               }
+               rs->sr_text = "authzId mapping failed";
+               return LDAP_PROXY_AUTHZ_FAILURE;
+       }
 
-       op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
+       Debug( LDAP_DEBUG_TRACE,
+               "parseProxyAuthz: conn=%lu \"%s\"\n", 
+               op->o_connid,
+               dn.bv_len ? dn.bv_val : "(NULL)", 0 );
+
+       rc = slap_sasl_authorized( op, &op->o_ndn, &dn );
+
+       if ( rc ) {
+               ch_free( dn.bv_val );
+               rs->sr_text = "not authorized to assume identity";
+               return LDAP_PROXY_AUTHZ_FAILURE;
+       }
+
+       ch_free( op->o_ndn.bv_val );
+       ch_free( op->o_dn.bv_val );
+
+       /*
+        * NOTE: since slap_sasl_getdn() returns a normalized dn,
+        * from now on op->o_dn is normalized
+        */
+       op->o_ndn = dn;
+       ber_dupbv( &op->o_dn, &dn );
+
+
+       Statslog( LDAP_DEBUG_STATS, "%s PROXYAUTHZ dn=\"%s\"\n",
+           op->o_log_prefix, dn.bv_val, 0, 0, 0 );
 
        return LDAP_SUCCESS;
 }
-#endif
 
-#ifdef LDAP_CONTROL_NOOP
 static int parseNoOp (
-       Connection *conn,
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       if ( op->o_noop != SLAP_NO_CONTROL ) {
-               *text = "noop control specified multiple times";
+       if ( op->o_noop != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "noop control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
        if ( ctrl->ldctl_value.bv_len ) {
-               *text = "noop control value not empty";
+               rs->sr_text = "noop control value not empty";
                return LDAP_PROTOCOL_ERROR;
        }
 
        op->o_noop = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
 
        return LDAP_SUCCESS;
 }
-#endif
 
-#ifdef LDAP_CONTROL_PAGEDRESULTS_REQUEST
 static int parsePagedResults (
-       Connection *conn,
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       ber_tag_t tag;
-       ber_int_t size;
-       BerElement *ber;
-       struct berval cookie = { 0, NULL };
+       int             rc = LDAP_SUCCESS;
+       ber_tag_t       tag;
+       ber_int_t       size;
+       BerElement      *ber;
+       struct berval   cookie = BER_BVNULL;
+       PagedResultsState       *ps;
 
-       if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
-               *text = "paged results control specified multiple times";
+       if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "paged results control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( ctrl->ldctl_value.bv_len == 0 ) {
-               *text = "paged results control value is empty";
+       if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
+               rs->sr_text = "paged results control value is empty (or absent)";
                return LDAP_PROTOCOL_ERROR;
        }
 
@@ -495,236 +895,510 @@ static int parsePagedResults (
         *                              -- requested page size from client
         *                              -- result set size estimate from server
         *              cookie  OCTET STRING
+        * }
         */
        ber = ber_init( &ctrl->ldctl_value );
-       if( ber == NULL ) {
-               *text = "internal error";
+       if ( ber == NULL ) {
+               rs->sr_text = "internal error";
                return LDAP_OTHER;
        }
 
        tag = ber_scanf( ber, "{im}", &size, &cookie );
-       (void) ber_free( ber, 1 );
 
-       if( tag == LBER_ERROR ) {
-               *text = "paged results control could not be decoded";
-               return LDAP_PROTOCOL_ERROR;
+       if ( tag == LBER_ERROR ) {
+               rs->sr_text = "paged results control could not be decoded";
+               rc = LDAP_PROTOCOL_ERROR;
+               goto done;
        }
 
-       if( size <= 0 ) {
-               *text = "paged results control size invalid";
-               return LDAP_PROTOCOL_ERROR;
+       if ( size < 0 ) {
+               rs->sr_text = "paged results control size invalid";
+               rc = LDAP_PROTOCOL_ERROR;
+               goto done;
        }
 
-       if( cookie.bv_len ) {
+#if 0
+       /* defer cookie decoding/checks to backend... */
+       if ( cookie.bv_len ) {
                PagedResultsCookie reqcookie;
                if( cookie.bv_len != sizeof( reqcookie ) ) {
                        /* bad cookie */
-                       *text = "paged results cookie is invalid";
-                       return LDAP_PROTOCOL_ERROR;
+                       rs->sr_text = "paged results cookie is invalid";
+                       rc = LDAP_PROTOCOL_ERROR;
+                       goto done;
                }
 
                AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 
-               if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
+               if ( reqcookie > op->o_pagedresults_state.ps_cookie ) {
                        /* bad cookie */
-                       *text = "paged results cookie is invalid";
-                       return LDAP_PROTOCOL_ERROR;
+                       rs->sr_text = "paged results cookie is invalid";
+                       rc = LDAP_PROTOCOL_ERROR;
+                       goto done;
+
+               } else if ( reqcookie < op->o_pagedresults_state.ps_cookie ) {
+                       rs->sr_text = "paged results cookie is invalid or old";
+                       rc = LDAP_UNWILLING_TO_PERFORM;
+                       goto done;
+               }
 
-               } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
-                       *text = "paged results cookie is invalid or old";
-                       return LDAP_UNWILLING_TO_PERFORM;
+       } else {
+               /* Initial request.  Initialize state. */
+#if 0
+               if ( op->o_conn->c_pagedresults_state.ps_cookie != 0 ) {
+                       /* There's another pagedResults control on the
+                        * same connection; reject new pagedResults controls 
+                        * (allowed by RFC2696) */
+                       rs->sr_text = "paged results cookie unavailable; try later";
+                       rc = LDAP_UNWILLING_TO_PERFORM;
+                       goto done;
                }
+#endif
+               op->o_pagedresults_state.ps_cookie = 0;
+               op->o_pagedresults_state.ps_count = 0;
        }
+#endif
 
-       op->o_pagedresults_state.ps_cookie = op->o_opid;
-       op->o_pagedresults_size = size;
+       ps = op->o_tmpalloc( sizeof(PagedResultsState), op->o_tmpmemctx );
+       *ps = op->o_conn->c_pagedresults_state;
+       ps->ps_size = size;
+       op->o_pagedresults_state = ps;
 
-       op->o_pagedresults = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+       /* NOTE: according to RFC 2696 3.:
 
-       return LDAP_SUCCESS;
+    If the page size is greater than or equal to the sizeLimit value, the
+    server should ignore the control as the request can be satisfied in a
+    single page.
+        
+        * NOTE: this assumes that the op->ors_slimit be set
+        * before the controls are parsed.     
+        */
+               
+       if ( op->ors_slimit > 0 && size >= op->ors_slimit ) {
+               op->o_pagedresults = SLAP_CONTROL_IGNORED;
+
+       } else if ( ctrl->ldctl_iscritical ) {
+               op->o_pagedresults = SLAP_CONTROL_CRITICAL;
+
+       } else {
+               op->o_pagedresults = SLAP_CONTROL_NONCRITICAL;
+       }
+
+done:;
+       (void)ber_free( ber, 1 );
+       return rc;
+}
+
+#ifdef LDAP_DEVEL
+static int parseSortedResults (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       int             rc = LDAP_SUCCESS;
+
+       if ( op->o_sortedresults != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "sorted results control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
+               rs->sr_text = "sorted results control value is empty (or absent)";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       /* blow off parsing the value */
+
+       op->o_sortedresults = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       return rc;
 }
 #endif
 
-#ifdef LDAP_CONTROL_VALUESRETURNFILTER
-int parseValuesReturnFilter (
-       Connection *conn,
+static int parseAssert (
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       int             rc;
        BerElement      *ber;
-       struct berval   fstr = { 0, NULL };
+       struct berval   fstr = BER_BVNULL;
        const char *err_msg = "";
 
-       if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
-               *text = "valuesreturnfilter control specified multiple times";
+       if ( op->o_assert != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "assert control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( ctrl->ldctl_value.bv_len == 0 ) {
+               rs->sr_text = "assert control value is empty (or absent)";
                return LDAP_PROTOCOL_ERROR;
        }
 
        ber = ber_init( &(ctrl->ldctl_value) );
        if (ber == NULL) {
-               *text = "internal error";
+               rs->sr_text = "assert control: internal error";
                return LDAP_OTHER;
        }
        
-       rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
+       rs->sr_err = get_filter( op, ber, (Filter **)&(op->o_assertion), &rs->sr_text);
 
-       if( rc != LDAP_SUCCESS ) {
-               text = &err_msg;
-               if( rc == SLAPD_DISCONNECT ) {
-                       send_ldap_disconnect( conn, op,
-                               LDAP_PROTOCOL_ERROR, *text );
+       if( rs->sr_err != LDAP_SUCCESS ) {
+               if( rs->sr_err == SLAPD_DISCONNECT ) {
+                       rs->sr_err = LDAP_PROTOCOL_ERROR;
+                       send_ldap_disconnect( op, rs );
+                       rs->sr_err = SLAPD_DISCONNECT;
                } else {
-                       send_ldap_result( conn, op, rc,
-                               NULL, *text, NULL, NULL );
+                       send_ldap_result( op, rs );
                }
-               if( fstr.bv_val != NULL) free( fstr.bv_val );
-               if( op->vrFilter != NULL) vrFilter_free( op->vrFilter ); 
-
-       } else {
-               vrFilter2bv( op->vrFilter, &fstr );
+               if( op->o_assertion != NULL ) {
+                       filter_free_x( op, op->o_assertion );
+               }
+               return rs->sr_err;
        }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ARGS, 
-               "parseValuesReturnFilter: conn %d       vrFilter: %s\n", 
-               conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
-#else
-       Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
-               fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
+#ifdef LDAP_DEBUG
+       filter2bv_x( op, op->o_assertion, &fstr );
+
+       Debug( LDAP_DEBUG_ARGS, "parseAssert: conn %ld assert: %s\n",
+               op->o_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
+       op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
 #endif
 
-       op->o_valuesreturnfilter = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+       op->o_assert = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
 
+       rs->sr_err = LDAP_SUCCESS;
        return LDAP_SUCCESS;
 }
-#endif
 
-#ifdef LDAP_CLIENT_UPDATE
-static int parseClientUpdate (
-       Connection *conn,
+static int parsePreRead (
        Operation *op,
-       LDAPControl *ctrl,
-       const char **text )
+       SlapReply *rs,
+       LDAPControl *ctrl )
 {
-       ber_tag_t tag;
-       BerElement *ber;
-       ber_int_t type;
-       ber_int_t interval;
-       ber_len_t len;
-       struct berval scheme = { 0, NULL };
-       struct berval cookie = { 0, NULL };
+       ber_len_t siz, off, i;
+       AttributeName *an = NULL;
+       BerElement      *ber;
 
-       if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
-               *text = "LCUP client update control specified multiple times";
+       if ( op->o_preread != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "preread control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
        if ( ctrl->ldctl_value.bv_len == 0 ) {
-               *text = "LCUP client update control value is empty";
+               rs->sr_text = "preread control value is empty (or absent)";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       /* Parse the control value
-        *      ClientUpdateControlValue ::= SEQUENCE {
-        *              updateType      ENUMERATED {
-        *                                      synchronizeOnly {0},
-        *                                      synchronizeAndPersist {1},
-        *                                      persistOnly {2} },
-        *              sendCookieInterval INTEGER OPTIONAL,
-        *              cookie          LCUPCookie OPTIONAL
-        *      }
-        */
-
-       ber = ber_init( &ctrl->ldctl_value );
-       if( ber == NULL ) {
-               *text = "internal error";
+       ber = ber_init( &(ctrl->ldctl_value) );
+       if (ber == NULL) {
+               rs->sr_text = "preread control: internal error";
                return LDAP_OTHER;
        }
 
-       if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
-               *text = "LCUP client update control : decoding error";
+       siz = sizeof( AttributeName );
+       off = offsetof( AttributeName, an_name );
+       if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
+               rs->sr_text = "preread control: decoding error";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       switch( type ) {
-       case LDAP_CUP_SYNC_ONLY:
-               type = SLAP_LCUP_SYNC;
-               break;
-       case LDAP_CUP_SYNC_AND_PERSIST:
-               type = SLAP_LCUP_SYNC_AND_PERSIST;
-               break;
-       case LDAP_CUP_PERSIST_ONLY:
-               type = SLAP_LCUP_PERSIST;
-               break;
-       default:
-               *text = "LCUP client update control : unknown update type";
+       for( i=0; i<siz; i++ ) {
+               int             rc = LDAP_SUCCESS;
+               const char      *dummy = NULL;
+
+               an[i].an_desc = NULL;
+               an[i].an_oc = NULL;
+               an[i].an_oc_exclude = 0;
+               rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
+               if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
+                       rs->sr_text = dummy
+                               ? dummy
+                               : "postread control: unknown attributeType";
+                       return rc;
+               }
+       }
+
+       op->o_preread = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       op->o_preread_attrs = an;
+
+       rs->sr_err = LDAP_SUCCESS;
+       return LDAP_SUCCESS;
+}
+
+static int parsePostRead (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       ber_len_t siz, off, i;
+       AttributeName *an = NULL;
+       BerElement      *ber;
+
+       if ( op->o_postread != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "postread control specified multiple times";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
-               *text = "LCUP client update control : decoding error";
+       if ( ctrl->ldctl_value.bv_len == 0 ) {
+               rs->sr_text = "postread control value is empty (or absent)";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( tag == LDAP_TAG_INTERVAL ) {
-               if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
-                       *text = "LCUP client update control : decoding error";
-                       return LDAP_PROTOCOL_ERROR;
-               }
-               
-               if ( interval <= 0 ) {
-                       /* server chooses interval */
-                       interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
+       ber = ber_init( &(ctrl->ldctl_value) );
+       if (ber == NULL) {
+               rs->sr_text = "postread control: internal error";
+               return LDAP_OTHER;
+       }
+
+       siz = sizeof( AttributeName );
+       off = offsetof( AttributeName, an_name );
+       if ( ber_scanf( ber, "{M}", &an, &siz, off ) == LBER_ERROR ) {
+               rs->sr_text = "postread control: decoding error";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       for( i=0; i<siz; i++ ) {
+               int             rc = LDAP_SUCCESS;
+               const char      *dummy = NULL;
+
+               an[i].an_desc = NULL;
+               an[i].an_oc = NULL;
+               an[i].an_oc_exclude = 0;
+               rc = slap_bv2ad( &an[i].an_name, &an[i].an_desc, &dummy );
+               if ( rc != LDAP_SUCCESS && ctrl->ldctl_iscritical ) {
+                       rs->sr_text = dummy
+                               ? dummy
+                               : "postread control: unknown attributeType";
+                       return rc;
                }
+       }
 
-       } else {
-               /* server chooses interval */
-               interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
+       op->o_postread = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       op->o_postread_attrs = an;
+
+       rs->sr_err = LDAP_SUCCESS;
+       return LDAP_SUCCESS;
+}
+
+int parseValuesReturnFilter (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       BerElement      *ber;
+       struct berval   fstr = BER_BVNULL;
+       const char *err_msg = "";
+
+       if ( op->o_valuesreturnfilter != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "valuesReturnFilter control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
-               *text = "LCUP client update control : decoding error";
+       if ( ctrl->ldctl_value.bv_len == 0 ) {
+               rs->sr_text = "valuesReturnFilter control value is empty (or absent)";
                return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( tag == LDAP_TAG_COOKIE ) {
-               if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
-                                       &scheme, &cookie )) == LBER_ERROR ) {
-                       *text = "LCUP client update control : decoding error";
-                       return LDAP_PROTOCOL_ERROR;
+       ber = ber_init( &(ctrl->ldctl_value) );
+       if (ber == NULL) {
+               rs->sr_text = "internal error";
+               return LDAP_OTHER;
+       }
+       
+       rs->sr_err = get_vrFilter( op, ber, (ValuesReturnFilter **)&(op->o_vrFilter), &rs->sr_text);
+
+       if( rs->sr_err != LDAP_SUCCESS ) {
+               if( rs->sr_err == SLAPD_DISCONNECT ) {
+                       rs->sr_err = LDAP_PROTOCOL_ERROR;
+                       send_ldap_disconnect( op, rs );
+                       rs->sr_err = SLAPD_DISCONNECT;
+               } else {
+                       send_ldap_result( op, rs );
                }
+               if( op->o_vrFilter != NULL) vrFilter_free( op, op->o_vrFilter ); 
+       }
+#ifdef LDAP_DEBUG
+       else {
+               vrFilter2bv( op, op->o_vrFilter, &fstr );
        }
 
-       /* TODO : Cookie Scheme Validation */
-#if 0
-       if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
-               *text = "Invalid LCUP cookie";
-               return LCUP_INVALID_COOKIE;
+       Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
+               fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
+       op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
+#endif
+
+       op->o_valuesreturnfilter = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       rs->sr_err = LDAP_SUCCESS;
+       return LDAP_SUCCESS;
+}
+
+#ifdef LDAP_CONTROL_SUBENTRIES
+static int parseSubentries (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       if ( op->o_subentries != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "subentries control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       /* FIXME: should use BER library */
+       if( ( ctrl->ldctl_value.bv_len != 3 )
+               || ( ctrl->ldctl_value.bv_val[0] != 0x01 )
+               || ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
+       {
+               rs->sr_text = "subentries control value encoding is bogus";
+               return LDAP_PROTOCOL_ERROR;
        }
 
-       if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
-               *text = "Unsupported LCUP cookie scheme";
-               return LCUP_UNSUPPORTED_SCHEME;
+       op->o_subentries = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       if (ctrl->ldctl_value.bv_val[2]) {
+               set_subentries_visibility( op );
        }
+
+       return LDAP_SUCCESS;
+}
 #endif
 
-       ber_dupbv( &op->o_clientupdate_state, &cookie );
+#ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
+static int parsePermissiveModify (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       if ( op->o_permissive_modify != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "permissiveModify control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( ctrl->ldctl_value.bv_len ) {
+               rs->sr_text = "permissiveModify control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       op->o_permissive_modify = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       return LDAP_SUCCESS;
+}
+#endif
+
+#ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
+static int parseDomainScope (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "domainScope control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( ctrl->ldctl_value.bv_len ) {
+               rs->sr_text = "domainScope control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       op->o_domain_scope = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       return LDAP_SUCCESS;
+}
+#endif
+
+#ifdef LDAP_CONTROL_X_TREE_DELETE
+static int parseTreeDelete (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       if ( op->o_tree_delete != SLAP_CONTROL_NONE ) {
+               rs->sr_text = "treeDelete control specified multiple times";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       if ( ctrl->ldctl_value.bv_len ) {
+               rs->sr_text = "treeDelete control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       op->o_tree_delete = ctrl->ldctl_iscritical
+               ? SLAP_CONTROL_CRITICAL
+               : SLAP_CONTROL_NONCRITICAL;
+
+       return LDAP_SUCCESS;
+}
+#endif
+
+#ifdef LDAP_CONTROL_X_SEARCH_OPTIONS
+static int parseSearchOptions (
+       Operation *op,
+       SlapReply *rs,
+       LDAPControl *ctrl )
+{
+       BerElement *ber;
+       ber_int_t search_flags;
+       ber_tag_t tag;
+
+       if ( ctrl->ldctl_value.bv_len == 0 ) {
+               rs->sr_text = "searchOptions control value not empty";
+               return LDAP_PROTOCOL_ERROR;
+       }
+
+       ber = ber_init( &ctrl->ldctl_value );
+       if( ber == NULL ) {
+               rs->sr_text = "internal error";
+               return LDAP_OTHER;
+       }
+
+       if ( (tag = ber_scanf( ber, "{i}", &search_flags )) == LBER_ERROR ) {
+               rs->sr_text = "searchOptions control decoding error";
+               return LDAP_PROTOCOL_ERROR;
+       }
 
        (void) ber_free( ber, 1 );
 
-       op->o_clientupdate_type = (char) type;
-       op->o_clientupdate_interval = interval;
+       if ( search_flags & LDAP_SEARCH_FLAG_DOMAIN_SCOPE ) {
+               if ( op->o_domain_scope != SLAP_CONTROL_NONE ) {
+                       rs->sr_text = "searchOptions control specified multiple times "
+                               "or with domainScope control";
+                       return LDAP_PROTOCOL_ERROR;
+               }
 
-       op->o_clientupdate = ctrl->ldctl_iscritical
-               ? SLAP_CRITICAL_CONTROL
-               : SLAP_NONCRITICAL_CONTROL;
+               op->o_domain_scope = ctrl->ldctl_iscritical
+                       ? SLAP_CONTROL_CRITICAL
+                       : SLAP_CONTROL_NONCRITICAL;
+       }
+
+       if ( search_flags & ~(LDAP_SEARCH_FLAG_DOMAIN_SCOPE) ) {
+               /* Other search flags not recognised so far,
+                * including:
+                *              LDAP_SEARCH_FLAG_PHANTOM_ROOM
+                */
+               rs->sr_text = "searchOptions contained unrecongized flag";
+               return LDAP_UNWILLING_TO_PERFORM;
+       }
 
        return LDAP_SUCCESS;
 }
-#endif /* LDAP_CLIENT_UPDATE */
+#endif
+