mirror of
https://git.openldap.org/openldap/openldap.git
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277 lines
7.1 KiB
C
277 lines
7.1 KiB
C
/*
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* Copyright (c) 1995 Regents of the University of Michigan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of Michigan at Ann Arbor. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include "slap.h"
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static void modlist_free(LDAPModList *ml);
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static void add_lastmods(Operation *op, LDAPModList **ml);
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void
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do_modify(
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Connection *conn,
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Operation *op
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)
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{
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char *dn, *odn;
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char *last;
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unsigned long tag, len;
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LDAPModList *modlist, *tmp;
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LDAPModList **modtail;
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Backend *be;
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Debug( LDAP_DEBUG_TRACE, "do_modify\n", 0, 0, 0 );
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/*
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* Parse the modify request. It looks like this:
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*
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* ModifyRequest := [APPLICATION 6] SEQUENCE {
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* name DistinguishedName,
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* mods SEQUENCE OF SEQUENCE {
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* operation ENUMERATED {
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* add (0),
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* delete (1),
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* replace (2)
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* },
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* modification SEQUENCE {
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* type AttributeType,
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* values SET OF AttributeValue
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* }
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* }
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* }
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*/
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if ( ber_scanf( op->o_ber, "{a" /*}*/, &dn ) == LBER_ERROR ) {
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Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL, "" );
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return;
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}
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odn = ch_strdup( dn );
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dn_normalize( dn );
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Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", dn, 0, 0 );
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/* collect modifications & save for later */
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modlist = NULL;
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modtail = &modlist;
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for ( tag = ber_first_element( op->o_ber, &len, &last );
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tag != LBER_DEFAULT;
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tag = ber_next_element( op->o_ber, &len, last ) )
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{
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(*modtail) = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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if ( ber_scanf( op->o_ber, "{i{a[V]}}", &(*modtail)->ml_op,
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&(*modtail)->ml_type, &(*modtail)->ml_bvalues )
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== LBER_ERROR )
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{
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
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"decoding error" );
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free( dn );
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free( odn );
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free( *modtail );
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*modtail = NULL;
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modlist_free( modlist );
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return;
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}
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if ( (*modtail)->ml_op != LDAP_MOD_ADD &&
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(*modtail)->ml_op != LDAP_MOD_DELETE &&
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(*modtail)->ml_op != LDAP_MOD_REPLACE )
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{
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
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"unrecognized modify operation" );
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free( dn );
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free( odn );
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modlist_free( modlist );
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return;
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}
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if ( (*modtail)->ml_bvalues == NULL
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&& (*modtail)->ml_op != LDAP_MOD_DELETE )
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{
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send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR, NULL,
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"no values given" );
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free( dn );
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free( odn );
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modlist_free( modlist );
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return;
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}
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attr_normalize( (*modtail)->ml_type );
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modtail = &(*modtail)->ml_next;
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}
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*modtail = NULL;
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#ifdef LDAP_DEBUG
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Debug( LDAP_DEBUG_ARGS, "modifications:\n", 0, 0, 0 );
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for ( tmp = modlist; tmp != NULL; tmp = tmp->ml_next ) {
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Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
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tmp->ml_op == LDAP_MOD_ADD
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? "add" : (tmp->ml_op == LDAP_MOD_DELETE
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? "delete" : "replace"), tmp->ml_type, 0 );
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}
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#endif
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Statslog( LDAP_DEBUG_STATS, "conn=%d op=%d MOD dn=\"%s\"\n",
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conn->c_connid, op->o_opid, dn, 0, 0 );
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/*
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* We could be serving multiple database backends. Select the
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* appropriate one, or send a referral to our "referral server"
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* if we don't hold it.
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*/
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if ( (be = select_backend( dn )) == NULL ) {
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free( dn );
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free( odn );
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modlist_free( modlist );
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send_ldap_result( conn, op, LDAP_PARTIAL_RESULTS, NULL,
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default_referral );
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return;
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}
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/* alias suffix if approp */
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dn = suffixAlias ( dn, op, be );
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/*
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* do the modify if 1 && (2 || 3)
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* 1) there is a modify function implemented in this backend;
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* 2) this backend is master for what it holds;
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* 3) it's a replica and the dn supplied is the updatedn.
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*/
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if ( be->be_modify != NULL ) {
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/* do the update here */
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if ( be->be_updatedn == NULL ||
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strcasecmp( be->be_updatedn, op->o_dn ) == 0 ) {
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if ( (be->be_lastmod == ON || ( be->be_lastmod == UNDEFINED &&
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global_lastmod == ON ) ) && be->be_updatedn == NULL ) {
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add_lastmods( op, &modlist );
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}
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if ( (*be->be_modify)( be, conn, op, odn, modlist ) == 0 ) {
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replog( be, LDAP_REQ_MODIFY, dn, modlist, 0 );
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}
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/* send a referral */
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} else {
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send_ldap_result( conn, op, LDAP_PARTIAL_RESULTS, NULL,
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default_referral );
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}
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} else {
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send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM, NULL,
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"Function not implemented" );
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}
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free( dn );
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free( odn );
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modlist_free( modlist );
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}
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static void
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modlist_free(
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LDAPModList *ml
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)
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{
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LDAPModList *next;
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for ( ; ml != NULL; ml = next ) {
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next = ml->ml_next;
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free( ml->ml_type );
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if ( ml->ml_bvalues != NULL )
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ber_bvecfree( ml->ml_bvalues );
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free( ml );
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}
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}
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static void
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add_lastmods( Operation *op, LDAPModList **modlist )
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{
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char buf[22];
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struct berval bv;
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struct berval *bvals[2];
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LDAPModList **m;
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LDAPModList *tmp;
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struct tm *ltm;
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Debug( LDAP_DEBUG_TRACE, "add_lastmods\n", 0, 0, 0 );
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bvals[0] = &bv;
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bvals[1] = NULL;
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/* remove any attempts by the user to modify these attrs */
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for ( m = modlist; *m != NULL; m = &(*m)->ml_next ) {
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if ( strcasecmp( (*m)->ml_type, "modifytimestamp" ) == 0 ||
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strcasecmp( (*m)->ml_type, "modifiersname" ) == 0 ||
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strcasecmp( (*m)->ml_type, "createtimestamp" ) == 0 ||
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strcasecmp( (*m)->ml_type, "creatorsname" ) == 0 ) {
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Debug( LDAP_DEBUG_TRACE,
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"add_lastmods: found lastmod attr: %s\n",
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(*m)->ml_type, 0, 0 );
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tmp = *m;
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*m = (*m)->ml_next;
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free( tmp->ml_type );
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if ( tmp->ml_bvalues != NULL ) {
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ber_bvecfree( tmp->ml_bvalues );
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}
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free( tmp );
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if (!*m)
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break;
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}
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}
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if ( op->o_dn == NULL || op->o_dn[0] == '\0' ) {
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bv.bv_val = "NULLDN";
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bv.bv_len = strlen( bv.bv_val );
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} else {
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bv.bv_val = op->o_dn;
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bv.bv_len = strlen( bv.bv_val );
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}
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tmp = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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tmp->ml_type = ch_strdup( "modifiersname" );
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tmp->ml_op = LDAP_MOD_REPLACE;
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tmp->ml_bvalues = (struct berval **) ch_calloc( 1,
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2 * sizeof(struct berval *) );
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tmp->ml_bvalues[0] = ber_bvdup( &bv );
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tmp->ml_next = *modlist;
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*modlist = tmp;
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pthread_mutex_lock( ¤ttime_mutex );
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#ifndef LDAP_LOCALTIME
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ltm = gmtime( ¤ttime );
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strftime( buf, sizeof(buf), "%Y%m%d%H%M%SZ", ltm );
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#else
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ltm = localtime( ¤ttime );
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strftime( buf, sizeof(buf), "%y%m%d%H%M%SZ", ltm );
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#endif
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pthread_mutex_unlock( ¤ttime_mutex );
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bv.bv_val = buf;
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bv.bv_len = strlen( bv.bv_val );
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tmp = (LDAPModList *) ch_calloc( 1, sizeof(LDAPModList) );
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tmp->ml_type = ch_strdup( "modifytimestamp" );
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tmp->ml_op = LDAP_MOD_REPLACE;
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tmp->ml_bvalues = (struct berval **) ch_calloc( 1, 2 * sizeof(struct berval *) );
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tmp->ml_bvalues[0] = ber_bvdup( &bv );
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tmp->ml_next = *modlist;
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*modlist = tmp;
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}
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