openldap/servers/slapd/back-ldbm/modify.c

423 lines
9.0 KiB
C

/* modify.c - ldbm backend modify routine */
/* $OpenLDAP$ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include <ac/time.h>
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
static int add_values LDAP_P(( Entry *e, Modification *mod, char *dn ));
static int delete_values LDAP_P(( Entry *e, Modification *mod, char *dn ));
static int replace_values LDAP_P(( Entry *e, Modification *mod, char *dn ));
/* We need this function because of LDAP modrdn. If we do not
* add this there would be a bunch of code replication here
* and there and of course the likelihood of bugs increases.
* Juan C. Gomez (gomez@engr.sgi.com) 05/18/99
*/
int ldbm_modify_internal(
Backend *be,
Connection *conn,
Operation *op,
char *dn,
Modifications *modlist,
Entry *e
)
{
int rc, err;
char *text;
Modification *mod;
Modifications *ml;
Attribute *save_attrs;
if ( !acl_check_modlist( be, conn, op, e, modlist )) {
return LDAP_INSUFFICIENT_ACCESS;
}
save_attrs = e->e_attrs;
e->e_attrs = attrs_dup( e->e_attrs );
for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
mod = &ml->sml_mod;
switch ( mod->sm_op ) {
case LDAP_MOD_ADD:
err = add_values( e, mod, op->o_ndn );
break;
case LDAP_MOD_DELETE:
err = delete_values( e, mod, op->o_ndn );
break;
case LDAP_MOD_REPLACE:
err = replace_values( e, mod, op->o_ndn );
break;
case SLAP_MOD_SOFTADD:
/* Avoid problems in index_add_mods()
* We need to add index if necessary.
*/
mod->sm_op = LDAP_MOD_ADD;
err = add_values( e, mod, op->o_ndn );
if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
err = LDAP_SUCCESS;
}
break;
}
if ( err != LDAP_SUCCESS ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
/* unlock entry, delete from cache */
return err;
}
}
/* check for abandon */
ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
if ( op->o_abandon ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
return SLAPD_ABANDON;
}
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
/* check that the entry still obeys the schema */
rc = entry_schema_check( e, save_attrs, &text );
if ( rc != LDAP_SUCCESS ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
Debug( LDAP_DEBUG_ANY, "entry failed schema check: %s\n",
text, 0, 0 );
return rc;
}
/* check for abandon */
ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
if ( op->o_abandon ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
return SLAPD_ABANDON;
}
ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
/* run through the attributes removing old indices */
for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
mod = &ml->sml_mod;
switch ( mod->sm_op ) {
case LDAP_MOD_REPLACE: {
/* Need to remove all values from indexes */
Attribute *a = save_attrs
? attr_find( save_attrs, mod->sm_desc )
: NULL;
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
if( a != NULL ) {
(void) index_change_values( be,
mod->mod_type,
a->a_vals,
e->e_id,
SLAP_INDEX_DELETE_OP );
}
#endif
} break;
case LDAP_MOD_DELETE:
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
/* remove deleted values */
(void) index_change_values( be,
mod->mod_type,
mod->mod_bvalues,
e->e_id,
SLAP_INDEX_DELETE_OP );
#endif
break;
}
}
attrs_free( save_attrs );
/* run through the attributes adding new indices */
for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
mod = &ml->sml_mod;
switch ( mod->sm_op ) {
case LDAP_MOD_REPLACE:
case LDAP_MOD_ADD:
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
(void) index_change_values( be,
mod->mod_type,
mod->mod_bvalues,
e->e_id,
SLAP_INDEX_ADD_OP );
#endif
break;
case LDAP_MOD_DELETE: {
/* Need to add all remaining values */
Attribute *a = e->e_attrs
? attr_find( e->e_attrs, mod->sm_desc )
: NULL;
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
if( a != NULL ) {
(void) index_change_values( be,
mod->mod_type,
a->a_vals,
e->e_id,
SLAP_INDEX_ADD_OP );
}
#endif
} break;
}
}
return LDAP_SUCCESS;
}
int
ldbm_back_modify(
Backend *be,
Connection *conn,
Operation *op,
char *dn,
char *ndn,
Modifications *modlist
)
{
int rc;
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
Entry *matched;
Entry *e;
int manageDSAit = get_manageDSAit( op );
Debug(LDAP_DEBUG_ARGS, "ldbm_back_modify:\n", 0, 0, 0);
/* acquire and lock entry */
if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
char* matched_dn = NULL;
struct berval **refs = NULL;
if ( matched != NULL ) {
matched_dn = ch_strdup( matched->e_dn );
refs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
cache_return_entry_r( &li->li_cache, matched );
} else {
refs = default_referral;
}
send_ldap_result( conn, op, LDAP_REFERRAL,
matched_dn, NULL, refs, NULL );
if ( matched != NULL ) {
ber_bvecfree( refs );
free( matched_dn );
}
return( -1 );
}
if ( !manageDSAit && is_entry_referral( e ) ) {
/* parent is a referral, don't allow add */
/* parent is an alias, don't allow add */
struct berval **refs = get_entry_referrals( be,
conn, op, e );
Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_REFERRAL,
e->e_dn, NULL, refs, NULL );
ber_bvecfree( refs );
goto error_return;
}
/* Modify the entry */
rc = ldbm_modify_internal( be, conn, op, ndn, modlist, e );
if( rc != LDAP_SUCCESS ) {
if( rc != SLAPD_ABANDON ) {
send_ldap_result( conn, op, rc,
NULL, NULL, NULL, NULL );
}
goto error_return;
}
/* change the entry itself */
if ( id2entry_add( be, e ) != 0 ) {
send_ldap_result( conn, op, LDAP_OTHER,
NULL, NULL, NULL, NULL );
goto error_return;
}
send_ldap_result( conn, op, LDAP_SUCCESS,
NULL, NULL, NULL, NULL );
cache_return_entry_w( &li->li_cache, e );
return( 0 );
error_return:;
cache_return_entry_w( &li->li_cache, e );
return( -1 );
}
static int
add_values(
Entry *e,
Modification *mod,
char *dn
)
{
int i;
Attribute *a;
#ifdef SLAPD_SCHEMA_NOT_COMPAT
AttributeDescription *desc = mod->sm_desc;
#else
char *desc = mod->mod_type;
#endif
a = attr_find( e->e_attrs, desc );
/* check if the values we're adding already exist */
if ( a != NULL ) {
for ( i = 0; mod->sm_bvalues[i] != NULL; i++ ) {
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
if ( value_find( a->a_vals, mod->sm_bvalues[i],
a->a_syntax, 3 ) == 0 )
{
return( LDAP_TYPE_OR_VALUE_EXISTS );
}
#endif
}
}
/* no - add them */
if( attr_merge( e, desc, mod->sm_bvalues ) != 0 ) {
return( LDAP_CONSTRAINT_VIOLATION );
}
return( LDAP_SUCCESS );
}
static int
delete_values(
Entry *e,
Modification *mod,
char *dn
)
{
#ifdef SLAPD_SCHEMA_NOT_COMPAT
/* not yet implemented */
#else
int i, j, k, found;
Attribute *a;
/* delete the entire attribute */
if ( mod->mod_bvalues == NULL ) {
Debug( LDAP_DEBUG_ARGS, "removing entire attribute %s\n",
mod->mod_type, 0, 0 );
return( attr_delete( &e->e_attrs, mod->mod_type ) ?
LDAP_NO_SUCH_ATTRIBUTE : LDAP_SUCCESS );
}
/* delete specific values - find the attribute first */
if ( (a = attr_find( e->e_attrs, mod->mod_type )) == NULL ) {
Debug( LDAP_DEBUG_ARGS, "could not find attribute %s\n",
mod->mod_type, 0, 0 );
return( LDAP_NO_SUCH_ATTRIBUTE );
}
/* find each value to delete */
for ( i = 0; mod->mod_bvalues[i] != NULL; i++ ) {
found = 0;
for ( j = 0; a->a_vals[j] != NULL; j++ ) {
if ( value_cmp( mod->mod_bvalues[i], a->a_vals[j],
a->a_syntax, 3 ) != 0 ) {
continue;
}
found = 1;
/* found a matching value - delete it */
ber_bvfree( a->a_vals[j] );
for ( k = j + 1; a->a_vals[k] != NULL; k++ ) {
a->a_vals[k - 1] = a->a_vals[k];
}
a->a_vals[k - 1] = NULL;
/* delete the entire attribute, if no values remain */
if ( a->a_vals[0] == NULL) {
Debug( LDAP_DEBUG_ARGS,
"removing entire attribute %s\n",
mod->mod_type, 0, 0 );
if ( attr_delete( &e->e_attrs, mod->mod_type ) ) {
return LDAP_NO_SUCH_ATTRIBUTE;
}
}
break;
}
/* looked through them all w/o finding it */
if ( ! found ) {
Debug( LDAP_DEBUG_ARGS,
"could not find value for attr %s\n",
mod->mod_type, 0, 0 );
return LDAP_NO_SUCH_ATTRIBUTE;
}
}
#endif
return( LDAP_SUCCESS );
}
static int
replace_values(
Entry *e,
Modification *mod,
char *dn
)
{
(void) attr_delete( &e->e_attrs, mod->sm_desc );
if ( mod->sm_bvalues != NULL &&
attr_merge( e, mod->sm_desc, mod->sm_bvalues ) != 0 )
{
return( LDAP_CONSTRAINT_VIOLATION );
}
return( LDAP_SUCCESS );
}