diff options
Diffstat (limited to 'servers/slapd/modrdn.c')
-rw-r--r-- | servers/slapd/modrdn.c | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/servers/slapd/modrdn.c b/servers/slapd/modrdn.c new file mode 100644 index 0000000..1603fa0 --- /dev/null +++ b/servers/slapd/modrdn.c @@ -0,0 +1,539 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2021 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>. + */ +/* Portions Copyright 1999, Juan C. Gomez, All rights reserved. + * This software is not subject to any license of Silicon Graphics + * Inc. or Purdue University. + * + * Redistribution and use in source and binary forms are permitted + * without restriction or fee of any kind as long as this notice + * is preserved. + */ +/* Portions Copyright (c) 1995 Regents of the University of Michigan. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that this notice is preserved and that due credit is given + * to the University of Michigan at Ann Arbor. The name of the University + * may not be used to endorse or promote products derived from this + * software without specific prior written permission. This software + * is provided ``as is'' without express or implied warranty. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/socket.h> +#include <ac/string.h> + +#include "slap.h" + +int +do_modrdn( + Operation *op, + SlapReply *rs +) +{ + struct berval dn = BER_BVNULL; + struct berval newrdn = BER_BVNULL; + struct berval newSuperior = BER_BVNULL; + ber_int_t deloldrdn; + + struct berval pnewSuperior = BER_BVNULL; + + struct berval nnewSuperior = BER_BVNULL; + + ber_len_t length; + + Debug( LDAP_DEBUG_TRACE, "%s do_modrdn\n", + op->o_log_prefix, 0, 0 ); + /* + * Parse the modrdn request. It looks like this: + * + * ModifyRDNRequest := SEQUENCE { + * entry DistinguishedName, + * newrdn RelativeDistinguishedName + * deleteoldrdn BOOLEAN, + * newSuperior [0] LDAPDN OPTIONAL (v3 Only!) + * } + */ + + if ( ber_scanf( op->o_ber, "{mmb", &dn, &newrdn, &deloldrdn ) + == LBER_ERROR ) + { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf failed\n", + op->o_log_prefix, 0, 0 ); + send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); + return SLAPD_DISCONNECT; + } + + /* Check for newSuperior parameter, if present scan it */ + + if ( ber_peek_tag( op->o_ber, &length ) == LDAP_TAG_NEWSUPERIOR ) { + if ( op->o_protocol < LDAP_VERSION3 ) { + /* Connection record indicates v2 but field + * newSuperior is present: report error. + */ + Debug( LDAP_DEBUG_ANY, + "%s do_modrdn: newSuperior requires LDAPv3\n", + op->o_log_prefix, 0, 0 ); + + send_ldap_discon( op, rs, + LDAP_PROTOCOL_ERROR, "newSuperior requires LDAPv3" ); + rs->sr_err = SLAPD_DISCONNECT; + goto cleanup; + } + + if ( ber_scanf( op->o_ber, "m", &newSuperior ) + == LBER_ERROR ) { + + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf(\"m\") failed\n", + op->o_log_prefix, 0, 0 ); + + send_ldap_discon( op, rs, + LDAP_PROTOCOL_ERROR, "decoding error" ); + rs->sr_err = SLAPD_DISCONNECT; + goto cleanup; + } + op->orr_newSup = &pnewSuperior; + op->orr_nnewSup = &nnewSuperior; + } + + Debug( LDAP_DEBUG_ARGS, + "do_modrdn: dn (%s) newrdn (%s) newsuperior (%s)\n", + dn.bv_val, newrdn.bv_val, + newSuperior.bv_len ? newSuperior.bv_val : "" ); + + if ( ber_scanf( op->o_ber, /*{*/ "}") == LBER_ERROR ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf failed\n", + op->o_log_prefix, 0, 0 ); + send_ldap_discon( op, rs, + LDAP_PROTOCOL_ERROR, "decoding error" ); + rs->sr_err = SLAPD_DISCONNECT; + goto cleanup; + } + + if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: get_ctrls failed\n", + op->o_log_prefix, 0, 0 ); + /* get_ctrls has sent results. Now clean up. */ + goto cleanup; + } + + rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx ); + if( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid dn (%s)\n", + op->o_log_prefix, dn.bv_val, 0 ); + send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" ); + goto cleanup; + } + + /* FIXME: should have/use rdnPretty / rdnNormalize routines */ + + rs->sr_err = dnPrettyNormal( NULL, &newrdn, &op->orr_newrdn, &op->orr_nnewrdn, op->o_tmpmemctx ); + if( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid newrdn (%s)\n", + op->o_log_prefix, newrdn.bv_val, 0 ); + send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" ); + goto cleanup; + } + + if( rdn_validate( &op->orr_newrdn ) != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid rdn (%s)\n", + op->o_log_prefix, op->orr_newrdn.bv_val, 0 ); + send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" ); + goto cleanup; + } + + if( op->orr_newSup ) { + rs->sr_err = dnPrettyNormal( NULL, &newSuperior, &pnewSuperior, + &nnewSuperior, op->o_tmpmemctx ); + if( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, + "%s do_modrdn: invalid newSuperior (%s)\n", + op->o_log_prefix, newSuperior.bv_val, 0 ); + send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid newSuperior" ); + goto cleanup; + } + } + + Statslog( LDAP_DEBUG_STATS, "%s MODRDN dn=\"%s\"\n", + op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 ); + + op->orr_deleteoldrdn = deloldrdn; + op->orr_modlist = NULL; + + /* prepare modlist of modifications from old/new RDN */ + rs->sr_err = slap_modrdn2mods( op, rs ); + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto cleanup; + } + + op->o_bd = frontendDB; + rs->sr_err = frontendDB->be_modrdn( op, rs ); + +#ifdef LDAP_X_TXN + if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) { + /* skip cleanup */ + } +#endif + +cleanup: + op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx ); + op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx ); + + op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx ); + op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx ); + + if ( op->orr_modlist != NULL ) + slap_mods_free( op->orr_modlist, 1 ); + + if ( !BER_BVISNULL( &pnewSuperior ) ) { + op->o_tmpfree( pnewSuperior.bv_val, op->o_tmpmemctx ); + } + if ( !BER_BVISNULL( &nnewSuperior ) ) { + op->o_tmpfree( nnewSuperior.bv_val, op->o_tmpmemctx ); + } + + return rs->sr_err; +} + +int +fe_op_modrdn( Operation *op, SlapReply *rs ) +{ + struct berval dest_ndn = BER_BVNULL, dest_pndn, pdn = BER_BVNULL; + BackendDB *op_be, *bd = op->o_bd; + ber_slen_t diff; + + if( op->o_req_ndn.bv_len == 0 ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: root dse!\n", + op->o_log_prefix, 0, 0 ); + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "cannot rename the root DSE" ); + goto cleanup; + + } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) { + Debug( LDAP_DEBUG_ANY, "%s do_modrdn: subschema subentry: %s (%ld)\n", + op->o_log_prefix, frontendDB->be_schemandn.bv_val, (long)frontendDB->be_schemandn.bv_len ); + + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "cannot rename subschema subentry" ); + goto cleanup; + } + + if( op->orr_nnewSup ) { + dest_pndn = *op->orr_nnewSup; + } else { + dnParent( &op->o_req_ndn, &dest_pndn ); + } + build_new_dn( &dest_ndn, &dest_pndn, &op->orr_nnewrdn, op->o_tmpmemctx ); + + diff = (ber_slen_t) dest_ndn.bv_len - (ber_slen_t) op->o_req_ndn.bv_len; + if ( diff > 0 ? dnIsSuffix( &dest_ndn, &op->o_req_ndn ) + : diff < 0 && dnIsSuffix( &op->o_req_ndn, &dest_ndn ) ) + { + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + diff > 0 ? "cannot place an entry below itself" + : "cannot place an entry above itself" ); + goto cleanup; + } + + /* + * We could be serving multiple database backends. Select the + * 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, 1 ); + if ( op->o_bd == NULL ) { + op->o_bd = bd; + rs->sr_ref = referral_rewrite( default_referral, + NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + if (!rs->sr_ref) rs->sr_ref = default_referral; + + if ( rs->sr_ref != NULL ) { + rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + + if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref ); + } else { + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "no global superior knowledge" ); + } + 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, 0 ); + } + + /* check restrictions */ + if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto cleanup; + } + + /* check for referrals */ + if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) { + goto cleanup; + } + + /* check that destination DN is in the same backend as source DN */ + if ( select_backend( &dest_ndn, 0 ) != op->o_bd ) { + send_ldap_error( op, rs, LDAP_AFFECTS_MULTIPLE_DSAS, + "cannot rename between DSAs" ); + goto cleanup; + } + + /* + * do the modrdn if 1 && (2 || 3) + * 1) there is a modrdn function implemented in this backend; + * 2) this backend is the provider for what it holds; + * 3) it's a replica and the dn supplied is the update_ndn. + */ + if ( op->o_bd->be_modrdn ) { + /* do the update here */ + int repl_user = be_isupdate( op ); + if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) + { + op->o_bd = op_be; + op->o_bd->be_modrdn( op, rs ); + + if ( op->o_bd->be_delete ) { + struct berval org_req_dn = BER_BVNULL; + struct berval org_req_ndn = BER_BVNULL; + struct berval org_dn = BER_BVNULL; + struct berval org_ndn = BER_BVNULL; + int org_managedsait; + + org_req_dn = op->o_req_dn; + org_req_ndn = op->o_req_ndn; + org_dn = op->o_dn; + org_ndn = op->o_ndn; + org_managedsait = get_manageDSAit( op ); + op->o_dn = op->o_bd->be_rootdn; + op->o_ndn = op->o_bd->be_rootndn; + op->o_managedsait = SLAP_CONTROL_NONCRITICAL; + + while ( rs->sr_err == LDAP_SUCCESS && + op->o_delete_glue_parent ) { + op->o_delete_glue_parent = 0; + if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) { + slap_callback cb = { NULL }; + cb.sc_response = slap_null_cb; + dnParent( &op->o_req_ndn, &pdn ); + op->o_req_dn = pdn; + op->o_req_ndn = pdn; + op->o_callback = &cb; + op->o_bd->be_delete( op, rs ); + } else { + break; + } + } + op->o_managedsait = org_managedsait; + op->o_dn = org_dn; + op->o_ndn = org_ndn; + op->o_req_dn = org_req_dn; + op->o_req_ndn = org_req_ndn; + op->o_delete_glue_parent = 0; + } + + } else { + 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; + + rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + + if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref ); + } else { + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "shadow context; no update referral" ); + } + } + } else { + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "operation not supported within namingContext" ); + } + +cleanup:; + if ( dest_ndn.bv_val != NULL ) + ber_memfree_x( dest_ndn.bv_val, op->o_tmpmemctx ); + op->o_bd = bd; + return rs->sr_err; +} + +/* extracted from slap_modrdn2mods() */ +static int +mod_op_add_val( + Operation *op, + AttributeDescription * const desc, + struct berval * const val, + short const sm_op ) +{ + int rv = LDAP_SUCCESS; + Modifications *mod_tmp; + mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) ); + mod_tmp->sml_desc = desc; + BER_BVZERO( &mod_tmp->sml_type ); + mod_tmp->sml_numvals = 1; + mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) ); + ber_dupbv( &mod_tmp->sml_values[0], val ); + mod_tmp->sml_values[1].bv_val = NULL; + if( desc->ad_type->sat_equality && desc->ad_type->sat_equality->smr_normalize) { + mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) ); + rv = desc->ad_type->sat_equality->smr_normalize( + SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX, + desc->ad_type->sat_syntax, + desc->ad_type->sat_equality, + &mod_tmp->sml_values[0], + &mod_tmp->sml_nvalues[0], NULL ); + if (rv != LDAP_SUCCESS) { + ch_free(mod_tmp->sml_nvalues); + ch_free(mod_tmp->sml_values[0].bv_val); + ch_free(mod_tmp->sml_values); + ch_free(mod_tmp); + goto done; + } + mod_tmp->sml_nvalues[1].bv_val = NULL; + } else { + mod_tmp->sml_nvalues = NULL; + } + mod_tmp->sml_op = sm_op; + mod_tmp->sml_flags = 0; + mod_tmp->sml_next = op->orr_modlist; + op->orr_modlist = mod_tmp; +done: + return rv; +} + +int +slap_modrdn2mods( + Operation *op, + SlapReply *rs ) +{ + int a_cnt, d_cnt; + LDAPRDN old_rdn = NULL; + LDAPRDN new_rdn = NULL; + + assert( !BER_BVISEMPTY( &op->oq_modrdn.rs_newrdn ) ); + + /* if requestDN is empty, silently reset deleteOldRDN */ + if ( BER_BVISEMPTY( &op->o_req_dn ) ) op->orr_deleteoldrdn = 0; + + if ( ldap_bv2rdn_x( &op->oq_modrdn.rs_newrdn, &new_rdn, + (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) { + Debug( LDAP_DEBUG_TRACE, + "%s slap_modrdn2mods: can't figure out " + "type(s)/value(s) of newrdn\n", + op->o_log_prefix, 0, 0 ); + rs->sr_err = LDAP_INVALID_DN_SYNTAX; + rs->sr_text = "unknown type(s)/value(s) used in RDN"; + goto done; + } + + if ( op->oq_modrdn.rs_deleteoldrdn ) { + if ( ldap_bv2rdn_x( &op->o_req_dn, &old_rdn, + (char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) { + Debug( LDAP_DEBUG_TRACE, + "%s slap_modrdn2mods: can't figure out " + "type(s)/value(s) of oldrdn\n", + op->o_log_prefix, 0, 0 ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "cannot parse RDN from old DN"; + goto done; + } + } + rs->sr_text = NULL; + + /* Add new attribute values to the entry */ + for ( a_cnt = 0; new_rdn[a_cnt]; a_cnt++ ) { + AttributeDescription *desc = NULL; + + rs->sr_err = slap_bv2ad( &new_rdn[a_cnt]->la_attr, &desc, &rs->sr_text ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + "%s slap_modrdn2mods: %s: %s (new)\n", + op->o_log_prefix, + rs->sr_text, + new_rdn[ a_cnt ]->la_attr.bv_val ); + goto done; + } + + if ( !desc->ad_type->sat_equality ) { + Debug( LDAP_DEBUG_TRACE, + "%s slap_modrdn2mods: %s: %s (new)\n", + op->o_log_prefix, + rs->sr_text, + new_rdn[ a_cnt ]->la_attr.bv_val ); + rs->sr_text = "naming attribute has no equality matching rule"; + rs->sr_err = LDAP_NAMING_VIOLATION; + goto done; + } + + /* Apply modification */ + rs->sr_err = mod_op_add_val( op, desc, &new_rdn[a_cnt]->la_value, SLAP_MOD_SOFTADD ); + if (rs->sr_err != LDAP_SUCCESS) + goto done; + } + + /* Remove old rdn value if required */ + if ( op->orr_deleteoldrdn ) { + for ( d_cnt = 0; old_rdn[d_cnt]; d_cnt++ ) { + AttributeDescription *desc = NULL; + + rs->sr_err = slap_bv2ad( &old_rdn[d_cnt]->la_attr, &desc, &rs->sr_text ); + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + "%s slap_modrdn2mods: %s: %s (old)\n", + op->o_log_prefix, + rs->sr_text, + old_rdn[d_cnt]->la_attr.bv_val ); + goto done; + } + + /* Apply modification */ + rs->sr_err = mod_op_add_val( op, desc, &old_rdn[d_cnt]->la_value, LDAP_MOD_DELETE ); + if (rs->sr_err != LDAP_SUCCESS) + goto done; + } + } + +done: + + /* LDAP v2 supporting correct attribute handling. */ + if ( rs->sr_err != LDAP_SUCCESS && op->orr_modlist != NULL ) { + slap_mods_free( op->orr_modlist, 1 ); + op->orr_modlist = NULL; + } + + if ( new_rdn != NULL ) { + ldap_rdnfree_x( new_rdn, op->o_tmpmemctx ); + } + if ( old_rdn != NULL ) { + ldap_rdnfree_x( old_rdn, op->o_tmpmemctx ); + } + + return rs->sr_err; +} + |