]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/modify.c
fix previous commit
[openldap] / servers / slapd / modify.c
index ac412159c136b3d8288c5c8099558885a8c22990..5f7199f4f159e3eab7d41f37beace0754d158f48 100644 (file)
@@ -1,10 +1,18 @@
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* 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, 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>.
  */
-/*
- * Copyright (c) 1995 Regents of the University of Michigan.
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms are permitted
 #include <ac/string.h>
 #include <ac/time.h>
 
-#include "ldap_pvt.h"
 #include "slap.h"
 #ifdef LDAP_SLAPI
-#include "slapi.h"
+#include "slapi/slapi.h"
 #endif
 #include "lutil.h"
 
@@ -36,27 +43,17 @@ do_modify(
     Operation  *op,
     SlapReply  *rs )
 {
-       struct berval dn = { 0, NULL };
+       struct berval dn = BER_BVNULL;
        char            *last;
        ber_tag_t       tag;
        ber_len_t       len;
        Modifications   *modlist = NULL;
        Modifications   **modtail = &modlist;
-#ifdef LDAP_DEBUG
-       Modifications *tmp;
-#endif
-#ifdef LDAP_SLAPI
-       LDAPMod         **modv = NULL;
-       Slapi_PBlock *pb = op->o_pb;
-#endif
-       int manageDSAit;
-       int increment = 0;
+       int             increment = 0;
+       char            textbuf[ SLAP_TEXT_BUFLEN ];
+       size_t          textlen = sizeof( textbuf );
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, "do_modify: enter\n", 0, 0, 0 );
-#else
        Debug( LDAP_DEBUG_TRACE, "do_modify\n", 0, 0, 0 );
-#endif
 
        /*
         * Parse the modify request.  It looks like this:
@@ -78,25 +75,15 @@ do_modify(
         */
 
        if ( ber_scanf( op->o_ber, "{m" /*}*/, &dn ) == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, "do_modify: ber_scanf failed\n", 0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "do_modify: ber_scanf failed\n", 0, 0, 0 );
-#endif
 
                send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
                return SLAPD_DISCONNECT;
        }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ARGS, "do_modify: dn (%s)\n", dn.bv_val, 0, 0 );
-#else
        Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", dn.bv_val, 0, 0 );
-#endif
-
 
        /* collect modifications & save for later */
-
        for ( tag = ber_first_element( op->o_ber, &len, &last );
            tag != LBER_DEFAULT;
            tag = ber_next_element( op->o_ber, &len, last ) )
@@ -107,10 +94,10 @@ do_modify(
                tmp.sml_nvalues = NULL;
 
                if ( ber_scanf( op->o_ber, "{i{m[W]}}", &mop,
-                   &tmp.sml_type, &tmp.sml_values )
-                   == LBER_ERROR )
+                   &tmp.sml_type, &tmp.sml_values ) == LBER_ERROR )
                {
-                       send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding modlist error" );
+                       send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR,
+                               "decoding modlist error" );
                        rs->sr_err = SLAPD_DISCONNECT;
                        goto cleanup;
                }
@@ -127,15 +114,9 @@ do_modify(
                switch( mop ) {
                case LDAP_MOD_ADD:
                        if ( mod->sml_values == NULL ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
-                                       "do_modify: modify/add operation (%ld) requires values\n",
-                                       (long)mop, 0, 0 );
-#else
                                Debug( LDAP_DEBUG_ANY,
                                        "do_modify: modify/add operation (%ld) requires values\n",
                                        (long) mop, 0, 0 );
-#endif
 
                                send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
                                        "modify/add operation requires values" );
@@ -152,15 +133,9 @@ do_modify(
                        if( op->o_protocol >= LDAP_VERSION3 ) {
                                increment++;
                                if ( mod->sml_values == NULL ) {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR, "do_modify: "
-                                               "modify/increment operation (%ld) requires value\n",
-                                               (long)mop, 0, 0 );
-#else
                                        Debug( LDAP_DEBUG_ANY, "do_modify: "
                                                "modify/increment operation (%ld) requires value\n",
                                                (long) mop, 0, 0 );
-#endif
 
                                        send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
                                                "modify/increment operation requires value" );
@@ -168,15 +143,9 @@ do_modify(
                                }
 
                                if( mod->sml_values[1].bv_val ) {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR, "do_modify: modify/increment "
-                                               "operation (%ld) requires single value\n",
-                                               (long)mop, 0, 0 );
-#else
                                        Debug( LDAP_DEBUG_ANY, "do_modify: modify/increment "
                                                "operation (%ld) requires single value\n",
                                                (long) mop, 0, 0 );
-#endif
 
                                        send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
                                                "modify/increment operation requires single value" );
@@ -188,15 +157,9 @@ do_modify(
                        /* fall thru */
 
                default: {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
-                                       "do_modify: unrecognized modify operation (%ld)\n",
-                                       (long)mop, 0, 0 );
-#else
                                Debug( LDAP_DEBUG_ANY,
                                        "do_modify: unrecognized modify operation (%ld)\n",
                                        (long) mop, 0, 0 );
-#endif
 
                                send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
                                        "unrecognized modify operation" );
@@ -209,11 +172,7 @@ do_modify(
        *modtail = NULL;
 
        if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, "do_modify: get_ctrls failed\n", 0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "do_modify: get_ctrls failed\n", 0, 0, 0 );
-#endif
 
                goto cleanup;
        }
@@ -221,36 +180,62 @@ do_modify(
        rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
                op->o_tmpmemctx );
        if( rs->sr_err != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, INFO, "do_modify: conn %d  invalid dn (%s)\n",
-                       op->o_connid, dn.bv_val, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                        "do_modify: invalid dn (%s)\n", dn.bv_val, 0, 0 );
-#endif
                send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
                goto cleanup;
        }
 
+       rs->sr_err = slap_mods_check( modlist, &rs->sr_text,
+                       textbuf, textlen, NULL );
+
+       if ( rs->sr_err != LDAP_SUCCESS ) {
+               send_ldap_result( op, rs );
+               goto cleanup;
+       }
+
+       /* FIXME: needs review */
+       op->orm_modlist = modlist;
+       op->orm_increment = increment;
+
+       op->o_bd = frontendDB;
+       rs->sr_err = frontendDB->be_modify( op, rs );
+
+cleanup:
+       slap_graduate_commit_csn( op );
+
+       op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
+       op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+       if ( modlist != NULL ) slap_mods_free( modlist );
+
+       return rs->sr_err;
+}
+
+int
+fe_op_modify( Operation *op, SlapReply *rs )
+{
+#ifdef LDAP_DEBUG
+       Modifications   *tmp;
+#endif
+       int             manageDSAit;
+       Modifications   *modlist = op->orm_modlist;
+       Modifications   **modtail = &modlist;
+#ifdef LDAP_SLAPI
+       LDAPMod         **modv = NULL;
+#endif
+       int             increment = op->orm_increment;
+       int             rc = 0;
+       BackendDB *op_be;
+       
        if( op->o_req_ndn.bv_len == 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "do_modify: attempt to modify root DSE.\n",0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "do_modify: root dse!\n", 0, 0, 0 );
-#endif
 
                send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
                        "modify upon the root DSE not supported" );
                goto cleanup;
 
-       } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                       "do_modify: attempt to modify subschema subentry.\n" , 0, 0, 0  );
-#else
+       } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
                Debug( LDAP_DEBUG_ANY, "do_modify: subschema subentry!\n", 0, 0, 0 );
-#endif
 
                send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
                        "modification of subschema subentry not supported" );
@@ -258,31 +243,9 @@ do_modify(
        }
 
 #ifdef LDAP_DEBUG
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, DETAIL1, "do_modify: modifications:\n", 0, 0, 0  );
-#else
        Debug( LDAP_DEBUG_ARGS, "modifications:\n", 0, 0, 0 );
-#endif
 
        for ( tmp = modlist; tmp != NULL; tmp = tmp->sml_next ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, DETAIL1, "\t%s:  %s\n", 
-                       tmp->sml_op == LDAP_MOD_ADD ? "add" :
-                               (tmp->sml_op == LDAP_MOD_INCREMENT ? "increment" :
-                                       (tmp->sml_op == LDAP_MOD_DELETE ? "delete" :
-                                               "replace")), tmp->sml_type.bv_val, 0 );
-
-               if ( tmp->sml_values == NULL ) {
-                       LDAP_LOG( OPERATION, DETAIL1, "\t\tno values", 0, 0, 0 );
-               } else if ( tmp->sml_values[0].bv_val == NULL ) {
-                       LDAP_LOG( OPERATION, DETAIL1, "\t\tzero values", 0, 0, 0 );
-               } else if ( tmp->sml_values[1].bv_val == NULL ) {
-                       LDAP_LOG( OPERATION, DETAIL1, "\t\tone value", 0, 0, 0 );
-               } else {
-                       LDAP_LOG( OPERATION, DETAIL1, "\t\tmultiple values", 0, 0, 0 );
-               }
-
-#else
                Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
                        tmp->sml_op == LDAP_MOD_ADD ? "add" :
                                (tmp->sml_op == LDAP_MOD_INCREMENT ? "increment" :
@@ -302,22 +265,28 @@ do_modify(
                        Debug( LDAP_DEBUG_ARGS, "%s\n",
                           "\t\tmultiple values", NULL, NULL );
                }
-#endif
        }
 
        if ( StatslogTest( LDAP_DEBUG_STATS ) ) {
                char abuf[BUFSIZ/2], *ptr = abuf;
                int len = 0;
 
-               Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu MOD dn=\"%s\"\n",
-                       op->o_connid, op->o_opid, dn.bv_val, 0, 0 );
+               Statslog( LDAP_DEBUG_STATS, "%s MOD dn=\"%s\"\n",
+                       op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 
                for ( tmp = modlist; tmp != NULL; tmp = tmp->sml_next ) {
                        if (len + 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
-                               Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu MOD attr=%s\n",
-                                   op->o_connid, op->o_opid, abuf, 0, 0 );
+                               Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
+                                   op->o_log_prefix, abuf, 0, 0, 0 );
+
                                len = 0;
                                ptr = abuf;
+
+                               if( 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
+                                       Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
+                                               op->o_log_prefix, tmp->sml_type.bv_val, 0, 0, 0 );
+                                       continue;
+                               }
                        }
                        if (len) {
                                *ptr++ = ' ';
@@ -327,8 +296,8 @@ do_modify(
                        len += tmp->sml_type.bv_len;
                }
                if (len) {
-                       Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu MOD attr=%s\n",
-                               op->o_connid, op->o_opid, abuf, 0, 0 );
+                       Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
+                               op->o_log_prefix, abuf, 0, 0, 0 );
                }
        }
 #endif /* LDAP_DEBUG */
@@ -340,7 +309,7 @@ do_modify(
         * appropriate one, or send a referral to our "referral server"
         * if we don't hold it.
         */
-       op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
+       op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
        if ( op->o_bd == NULL ) {
                rs->sr_ref = referral_rewrite( default_referral,
                        NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
@@ -348,16 +317,26 @@ do_modify(
 
                if (rs->sr_ref != NULL ) {
                        rs->sr_err = LDAP_REFERRAL;
+                       op->o_bd = frontendDB;
                        send_ldap_result( op, rs );
+                       op->o_bd = NULL;
 
                        if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
                } else {
+                       op->o_bd = frontendDB;
                        send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
-                               "referral missing" );
+                               "no global superior knowledge" );
+                       op->o_bd = NULL;
                }
                goto cleanup;
        }
 
+       /* If we've got a glued backend, check the real backend */
+       op_be = op->o_bd;
+       if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
+               op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
+       }
+
        /* check restrictions */
        if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
                send_ldap_result( op, rs );
@@ -376,60 +355,58 @@ do_modify(
        }
 
 #if defined( LDAP_SLAPI )
-       slapi_x_pblock_set_operation( pb, op );
-       slapi_pblock_set( pb, SLAPI_MODIFY_TARGET, (void *)dn.bv_val );
-       slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
-       modv = slapi_x_modifications2ldapmods( &modlist );
-       slapi_pblock_set( pb, SLAPI_MODIFY_MODS, (void *)modv );
-
-       rs->sr_err = doPluginFNs( op->o_bd, SLAPI_PLUGIN_PRE_MODIFY_FN, pb );
-       if ( rs->sr_err < 0 ) {
+#define pb     op->o_pb
+       if ( pb ) {
+               slapi_int_pblock_set_operation( pb, op );
+               slapi_pblock_set( pb, SLAPI_MODIFY_TARGET, (void *)op->o_req_dn.bv_val );
+               slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
+               modv = slapi_int_modifications2ldapmods( &modlist );
+               slapi_pblock_set( pb, SLAPI_MODIFY_MODS, (void *)modv );
+
+               rs->sr_err = slapi_int_call_plugins( op->o_bd,
+                       SLAPI_PLUGIN_PRE_MODIFY_FN, pb );
+
                /*
-                * A preoperation plugin failure will abort the
-                * entire operation.
+                * It's possible that the preoperation plugin changed the
+                * modification array, so we need to convert it back to
+                * a Modification list.
+                *
+                * Calling slapi_int_modifications2ldapmods() destroyed modlist so
+                * we don't need to free it.
                 */
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, INFO, "do_modify: modify preoperation plugin "
-                               "failed\n", 0, 0, 0 );
-#else
-               Debug(LDAP_DEBUG_TRACE, "do_modify: modify preoperation plugin failed.\n",
+               slapi_pblock_get( pb, SLAPI_MODIFY_MODS, (void **)&modv );
+               modlist = slapi_int_ldapmods2modifications( modv );
+
+               if ( rs->sr_err < 0 ) {
+                       /*
+                        * A preoperation plugin failure will abort the
+                        * entire operation.
+                        */
+                       Debug(LDAP_DEBUG_TRACE,
+                               "do_modify: modify preoperation plugin failed.\n",
                                0, 0, 0);
-#endif
-               if ( ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
-                    rs->sr_err == LDAP_SUCCESS ) {
-                       rs->sr_err = LDAP_OTHER;
+                       if ( ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
+                               (void *)&rs->sr_err ) != 0 ) || rs->sr_err == LDAP_SUCCESS )
+                       {
+                               rs->sr_err = LDAP_OTHER;
+                       }
+                       slapi_int_free_ldapmods( modv );
+                       modv = NULL;
+                       goto cleanup;
                }
-               slapi_x_free_ldapmods( modv );
-               modv = NULL;
-               goto cleanup;
        }
 
-       /*
-        * It's possible that the preoperation plugin changed the
-        * modification array, so we need to convert it back to
-        * a Modification list.
-        *
-        * Calling slapi_x_modifications2ldapmods() destroyed modlist so
-        * we don't need to free it.
-        */
-       slapi_pblock_get( pb, SLAPI_MODIFY_MODS, (void **)&modv );
-       modlist = slapi_x_ldapmods2modifications( modv );
-
        /*
         * NB: it is valid for the plugin to return no modifications
         * (for example, a plugin might store some attributes elsewhere
         * and remove them from the modification list; if only those
         * attribute types were included in the modification request,
-        * then slapi_x_ldapmods2modifications() above will return
+        * then slapi_int_ldapmods2modifications() above will return
         * NULL).
         *
         * However, the post-operation plugin should still be 
         * called.
         */
-       if ( modlist == NULL ) {
-               rs->sr_err = LDAP_SUCCESS;
-               send_ldap_result( op, rs );
-       } else {
 #endif /* defined( LDAP_SLAPI ) */
 
        /*
@@ -440,30 +417,33 @@ do_modify(
         */
        if ( op->o_bd->be_modify ) {
                /* do the update here */
-               int repl_user = be_isupdate( op->o_bd, &op->o_ndn );
+               int repl_user = be_isupdate( op );
 
                /* Multimaster slapd does not have to check for replicator dn
                 * because it accepts each modify request
                 */
 #ifndef SLAPD_MULTIMASTER
-               if ( !op->o_bd->syncinfo &&
-                       ( !op->o_bd->be_update_ndn.bv_len || repl_user ))
-#else
-               if ( !op->o_bd->syncinfo )
+               if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 #endif
                {
-                       int update = op->o_bd->be_update_ndn.bv_len;
-                       char textbuf[SLAP_TEXT_BUFLEN];
-                       size_t textlen = sizeof textbuf;
+                       int             update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn );
+                       char            textbuf[ SLAP_TEXT_BUFLEN ];
+                       size_t          textlen = sizeof( textbuf );
+                       slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 
-                       rs->sr_err = slap_mods_check( modlist, update, &rs->sr_text,
-                               textbuf, textlen, NULL );
+                       op->o_bd = op_be;
 
-                       if( rs->sr_err != LDAP_SUCCESS ) {
-                               send_ldap_result( op, rs );
-                               goto cleanup;
+                       if ( !update ) {
+                               rs->sr_err = slap_mods_no_update_check( modlist,
+                                               &rs->sr_text, textbuf, textlen );
+                               if ( rs->sr_err != LDAP_SUCCESS ) {
+                                       send_ldap_result( op, rs );
+                                       goto cleanup;
+                               }
                        }
 
+
+
                        if ( !repl_user ) {
                                for( modtail = &modlist;
                                        *modtail != NULL;
@@ -473,7 +453,7 @@ do_modify(
                                }
 
                                rs->sr_err = slap_mods_opattrs( op, modlist, modtail,
-                                       &rs->sr_text, textbuf, textlen );
+                                       &rs->sr_text, textbuf, textlen, 1 );
                                if( rs->sr_err != LDAP_SUCCESS ) {
                                        send_ldap_result( op, rs );
                                        goto cleanup;
@@ -481,39 +461,40 @@ do_modify(
                        }
 
                        op->orm_modlist = modlist;
-                       if ( (op->o_bd->be_modify)( op, rs ) == 0
 #ifdef SLAPD_MULTIMASTER
-                               && !repl_user
+                       if ( !repl_user )
 #endif
-                       ) {
-                               /* but we log only the ones not from a replicator user */
-                               replog( op );
+                       {
+                               /* but multimaster slapd logs only the ones 
+                                * not from a replicator user */
+                               cb.sc_next = op->o_callback;
+                               op->o_callback = &cb;
                        }
+                       op->o_bd->be_modify( op, rs );
 
 #ifndef SLAPD_MULTIMASTER
                /* send a referral */
                } else {
-                       BerVarray defref = NULL;
-                       if ( op->o_bd->syncinfo ) {
-                               defref = op->o_bd->syncinfo->provideruri_bv;
-                       } else {
-                               defref = op->o_bd->be_update_refs
-                                               ? op->o_bd->be_update_refs : default_referral;
-                       }
+                       BerVarray defref = op->o_bd->be_update_refs
+                               ? op->o_bd->be_update_refs : default_referral;
                        if ( defref != NULL ) {
                                rs->sr_ref = referral_rewrite( defref,
                                        NULL, &op->o_req_dn,
                                        LDAP_SCOPE_DEFAULT );
-                               if (!rs->sr_ref) rs->sr_ref = defref;
+                               if ( rs->sr_ref == NULL ) {
+                                       /* FIXME: must duplicate, because
+                                        * overlays may muck with it */
+                                       rs->sr_ref = defref;
+                               }
                                rs->sr_err = LDAP_REFERRAL;
                                send_ldap_result( op, rs );
-                               if (rs->sr_ref != defref) {
+                               if ( rs->sr_ref != defref ) {
                                        ber_bvarray_free( rs->sr_ref );
                                }
+
                        } else {
-                               send_ldap_error( op, rs,
-                                               LDAP_UNWILLING_TO_PERFORM,
-                                               "referral missing" );
+                               send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+                                       "shadow context; no update referral" );
                        }
 #endif
                }
@@ -523,38 +504,51 @@ do_modify(
        }
 
 #if defined( LDAP_SLAPI )
-       } /* modlist != NULL */
-
-       if ( doPluginFNs( op->o_bd, SLAPI_PLUGIN_POST_MODIFY_FN, pb ) < 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, INFO, "do_modify: modify postoperation plugins "
-                               "failed\n", 0, 0, 0 );
-#else
-               Debug(LDAP_DEBUG_TRACE, "do_modify: modify postoperation plugins "
-                               "failed.\n", 0, 0, 0);
-#endif
+       if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
+               SLAPI_PLUGIN_POST_MODIFY_FN, pb ) < 0 )
+       {
+               Debug(LDAP_DEBUG_TRACE,
+                       "do_modify: modify postoperation plugins failed.\n", 0, 0, 0);
        }
 #endif /* defined( LDAP_SLAPI ) */
 
-cleanup:
-
-       slap_graduate_commit_csn( op );
-
-       op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
-       op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
-       if ( modlist != NULL ) slap_mods_free( modlist );
+cleanup:;
 #if defined( LDAP_SLAPI )
-       if ( modv != NULL ) slapi_x_free_ldapmods( modv );
+       if ( modv != NULL ) slapi_int_free_ldapmods( modv );
 #endif
+
        return rs->sr_err;
 }
 
+/*
+ * Do non-update constraint checking.
+ */
+int
+slap_mods_no_update_check(
+       Modifications *ml,
+       const char **text,
+       char *textbuf,
+       size_t textlen )
+{
+       for ( ; ml != NULL; ml = ml->sml_next ) {
+               if ( is_at_no_user_mod( ml->sml_desc->ad_type ) ) {
+                       /* user modification disallowed */
+                       snprintf( textbuf, textlen,
+                               "%s: no user modification allowed",
+                               ml->sml_type.bv_val );
+                       *text = textbuf;
+                       return LDAP_CONSTRAINT_VIOLATION;
+               }
+       }
+
+       return LDAP_SUCCESS;
+}
+
 /*
  * Do basic attribute type checking and syntax validation.
  */
 int slap_mods_check(
        Modifications *ml,
-       int update,
        const char **text,
        char *textbuf,
        size_t textlen,
@@ -591,7 +585,7 @@ int slap_mods_check(
                if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
                        && slap_ad_is_binary( ad ))
                {
-                       /* attribute requires binary transfer */
+                       /* attribute does not require binary transfer */
                        snprintf( textbuf, textlen,
                                "%s: disallows ;binary transfer",
                                ml->sml_type.bv_val );
@@ -608,6 +602,8 @@ int slap_mods_check(
                        return LDAP_UNDEFINED_TYPE;
                }
 
+#if 0
+               /* moved to slap_mods_no_update_check() */
                if (!update && is_at_no_user_mod( ad->ad_type )) {
                        /* user modification disallowed */
                        snprintf( textbuf, textlen,
@@ -616,6 +612,7 @@ int slap_mods_check(
                        *text = textbuf;
                        return LDAP_CONSTRAINT_VIOLATION;
                }
+#endif
 
                if ( is_at_obsolete( ad->ad_type ) &&
                        (( ml->sml_op != LDAP_MOD_REPLACE &&
@@ -727,20 +724,14 @@ int slap_mods_check(
 
                                for( nvals = 0; ml->sml_values[nvals].bv_val; nvals++ ) {
                                        rc = ad->ad_type->sat_equality->smr_normalize(
-                                               0,
+                                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
                                                ad->ad_type->sat_syntax,
                                                ad->ad_type->sat_equality,
                                                &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
                                        if( rc ) {
-#ifdef NEW_LOGGING
-                                               LDAP_LOG( OPERATION, DETAIL1,
-                                                       "str2entry:  NULL (ssyn_normalize %d)\n",
-                                                       rc, 0, 0 );
-#else
                                                Debug( LDAP_DEBUG_ANY,
                                                        "<= str2entry NULL (ssyn_normalize %d)\n",
                                                        rc, 0, 0 );
-#endif
                                                snprintf( textbuf, textlen,
                                                        "%s: value #%ld normalization failed",
                                                        ml->sml_type.bv_val, (long) nvals );
@@ -752,6 +743,65 @@ int slap_mods_check(
                                ml->sml_nvalues[nvals].bv_val = NULL;
                                ml->sml_nvalues[nvals].bv_len = 0;
                        }
+
+                       if( nvals ) {
+                               /* check for duplicates */
+                               int             i, j;
+                               MatchingRule *mr = ad->ad_type->sat_equality;
+
+                               /* check if the values we're adding already exist */
+                               if( mr == NULL || !mr->smr_match ) {
+                                       for ( i = 1; ml->sml_values[i].bv_val != NULL; i++ ) {
+                                               /* test asserted values against themselves */
+                                               for( j = 0; j < i; j++ ) {
+                                                       if ( bvmatch( &ml->sml_values[i],
+                                                               &ml->sml_values[j] ) )
+                                                       {
+                                                               /* value exists already */
+                                                               snprintf( textbuf, textlen,
+                                                                       "%s: value #%d provided more than once",
+                                                                       ml->sml_desc->ad_cname.bv_val, j );
+                                                               *text = textbuf;
+                                                               return LDAP_TYPE_OR_VALUE_EXISTS;
+                                                       }
+                                               }
+                                       }
+
+                               } else {
+                                       int rc;
+                                       int match;
+
+                                       for ( i = 1; ml->sml_values[i].bv_val != NULL; i++ ) {
+                                               /* test asserted values against themselves */
+                                               for( j = 0; j < i; j++ ) {
+                                                       rc = value_match( &match, ml->sml_desc, mr,
+                                                               SLAP_MR_EQUALITY
+                                                                       | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX
+                                                                       | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH
+                                                                       | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH,
+                                                               ml->sml_nvalues
+                                                                       ? &ml->sml_nvalues[i]
+                                                                       : &ml->sml_values[i],
+                                                               ml->sml_nvalues
+                                                                       ? &ml->sml_nvalues[j]
+                                                                       : &ml->sml_values[j],
+                                                               text );
+                                                       if ( rc == LDAP_SUCCESS && match == 0 ) {
+                                                               /* value exists already */
+                                                               snprintf( textbuf, textlen,
+                                                                       "%s: value #%d provided more than once",
+                                                                       ml->sml_desc->ad_cname.bv_val, j );
+                                                               *text = textbuf;
+                                                               return LDAP_TYPE_OR_VALUE_EXISTS;
+
+                                                       } else if ( rc != LDAP_SUCCESS ) {
+                                                               return rc;
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+
                }
        }
 
@@ -763,7 +813,8 @@ int slap_mods_opattrs(
        Modifications *mods,
        Modifications **modtail,
        const char **text,
-       char *textbuf, size_t textlen )
+       char *textbuf, size_t textlen,
+       int manage_ctxcsn )
 {
        struct berval name, timestamp, csn;
        struct berval nname;
@@ -779,22 +830,30 @@ int slap_mods_opattrs(
 
        if ( SLAP_LASTMOD( op->o_bd )) {
                struct tm *ltm;
+#ifdef HAVE_GMTIME_R
+               struct tm ltm_buf;
+#endif
                time_t now = slap_get_time();
 
+#ifdef HAVE_GMTIME_R
+               ltm = gmtime_r( &now, &ltm_buf );
+#else
                ldap_pvt_thread_mutex_lock( &gmtime_mutex );
                ltm = gmtime( &now );
+#endif /* HAVE_GMTIME_R */
                lutil_gentime( timebuf, sizeof(timebuf), ltm );
 
-               slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
+               slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, manage_ctxcsn );
 
+#ifndef HAVE_GMTIME_R
                ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
+#endif
 
                timestamp.bv_val = timebuf;
                timestamp.bv_len = strlen(timebuf);
 
                if( op->o_dn.bv_len == 0 ) {
-                       name.bv_val = SLAPD_ANONYMOUS;
-                       name.bv_len = sizeof(SLAPD_ANONYMOUS)-1;
+                       BER_BVSTR( &name, SLAPD_ANONYMOUS );
                        nname = name;
                } else {
                        name = op->o_dn;
@@ -841,12 +900,20 @@ int slap_mods_opattrs(
                        mod->sml_type.bv_val = NULL;
                        mod->sml_desc = slap_schema.si_ad_entryUUID;
                        mod->sml_values =
-                       (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
+                               (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
                        ber_dupbv( &mod->sml_values[0], &tmpval );
                        mod->sml_values[1].bv_len = 0;
                        mod->sml_values[1].bv_val = NULL;
                        assert( mod->sml_values[0].bv_val );
-                       mod->sml_nvalues = NULL;
+                       mod->sml_nvalues =
+                               (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
+                       (*mod->sml_desc->ad_type->sat_equality->smr_normalize)(
+                                       SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                                       mod->sml_desc->ad_type->sat_syntax,
+                                       mod->sml_desc->ad_type->sat_equality,
+                                       mod->sml_values, mod->sml_nvalues, NULL );
+                       mod->sml_nvalues[1].bv_len = 0;
+                       mod->sml_nvalues[1].bv_val = NULL;
                        *modtail = mod;
                        modtail = &mod->sml_next;
 
@@ -854,7 +921,8 @@ int slap_mods_opattrs(
                        mod->sml_op = mop;
                        mod->sml_type.bv_val = NULL;
                        mod->sml_desc = slap_schema.si_ad_creatorsName;
-                       mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
+                       mod->sml_values =
+                               (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
                        ber_dupbv( &mod->sml_values[0], &name );
                        mod->sml_values[1].bv_len = 0;
                        mod->sml_values[1].bv_val = NULL;
@@ -872,7 +940,8 @@ int slap_mods_opattrs(
                        mod->sml_op = mop;
                        mod->sml_type.bv_val = NULL;
                        mod->sml_desc = slap_schema.si_ad_createTimestamp;
-                       mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
+                       mod->sml_values =
+                               (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
                        ber_dupbv( &mod->sml_values[0], &timestamp );
                        mod->sml_values[1].bv_len = 0;
                        mod->sml_values[1].bv_val = NULL;