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https://git.openldap.org/openldap/openldap.git
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370 lines
8.5 KiB
C
370 lines
8.5 KiB
C
/* modify.c - ldbm backend modify routine */
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include <ac/time.h>
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#include "slap.h"
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#include "back-ldbm.h"
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#include "proto-back-ldbm.h"
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static void add_lastmods(Operation *op, LDAPModList **ml);
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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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time_t currenttime;
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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(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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currenttime = slap_get_time();
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ldap_pvt_thread_mutex_lock( &gmtime_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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ldap_pvt_thread_mutex_unlock( &gmtime_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(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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/* We need this function because of LDAP modrdn. If we do not
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* add this there would be a bunch of code replication here
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* and there and of course the likelihood of bugs increases.
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* Juan C. Gomez (gomez@engr.sgi.com) 05/18/99
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*/
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int ldbm_modify_internal(
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Backend *be,
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Connection *conn,
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Operation *op,
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char *dn,
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LDAPModList *modlist,
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Entry *e
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)
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{
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int err;
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LDAPMod *mod;
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LDAPModList *ml;
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Attribute *a;
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if ( ((be->be_lastmod == ON)
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|| ((be->be_lastmod == UNDEFINED)&&(global_lastmod == ON)))
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&& (be->be_update_ndn == NULL)) {
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/* XXX: It may be wrong, it changes mod time even if
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* mod fails!
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*/
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add_lastmods( op, &modlist );
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}
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if ( (err = acl_check_modlist( be, conn, op, e, modlist ))
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!= LDAP_SUCCESS ) {
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send_ldap_result( conn, op, err, NULL, NULL );
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return -1;
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}
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for ( ml = modlist; ml != NULL; ml = ml->ml_next ) {
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mod = &ml->ml_mod;
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switch ( mod->mod_op & ~LDAP_MOD_BVALUES ) {
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case LDAP_MOD_ADD:
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err = add_values( e, mod, op->o_ndn );
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break;
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case LDAP_MOD_DELETE:
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err = delete_values( e, mod, op->o_ndn );
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break;
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case LDAP_MOD_REPLACE:
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/* Need to remove all values from indexes before they
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* are lost.
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*/
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if( e->e_attrs
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&& ((a = attr_find( e->e_attrs, mod->mod_type ))
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!= NULL) ) {
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(void) index_change_values( be,
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mod->mod_type,
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a->a_vals,
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e->e_id,
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__INDEX_DELETE_OP);
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}
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err = replace_values( e, mod, op->o_ndn );
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break;
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case LDAP_MOD_SOFTADD:
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/* Avoid problems in index_add_mods()
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* We need to add index if necessary.
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*/
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mod->mod_op = LDAP_MOD_ADD;
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if ( (err = add_values( e, mod, op->o_ndn ))
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== LDAP_TYPE_OR_VALUE_EXISTS ) {
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err = LDAP_SUCCESS;
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mod->mod_op = LDAP_MOD_SOFTADD;
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}
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break;
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}
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if ( err != LDAP_SUCCESS ) {
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/* unlock entry, delete from cache */
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send_ldap_result( conn, op, err, NULL, NULL );
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return -1;
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}
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}
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/* check that the entry still obeys the schema */
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if ( global_schemacheck && oc_schema_check( e ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "entry failed schema check\n", 0, 0, 0 );
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send_ldap_result( conn, op, LDAP_OBJECT_CLASS_VIOLATION, NULL, NULL );
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return -1;
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}
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/* check for abandon */
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ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
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if ( op->o_abandon ) {
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ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
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return -1;
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}
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ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
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/* modify indexes */
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if ( index_add_mods( be, modlist, e->e_id ) != 0 ) {
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
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return -1;
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}
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/* check for abandon */
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ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
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if ( op->o_abandon ) {
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ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
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return -1;
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}
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ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
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return 0;
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}/* int ldbm_modify_internal() */
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int
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ldbm_back_modify(
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Backend *be,
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Connection *conn,
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Operation *op,
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char *dn,
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LDAPModList *modlist
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)
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{
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struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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char *matched;
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Entry *e;
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Debug(LDAP_DEBUG_ARGS, "ldbm_back_modify:\n", 0, 0, 0);
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/* acquire and lock entry */
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if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
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send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched,
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NULL );
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if ( matched != NULL ) {
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free( matched );
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}
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return( -1 );
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}
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/* Modify the entry */
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if ( ldbm_modify_internal( be, conn, op, dn, modlist, e ) != 0 ) {
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goto error_return;
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}
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/* change the entry itself */
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if ( id2entry_add( be, e ) != 0 ) {
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL, NULL );
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goto error_return;
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}
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send_ldap_result( conn, op, LDAP_SUCCESS, NULL, NULL );
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cache_return_entry_w( &li->li_cache, e );
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return( 0 );
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error_return:;
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cache_return_entry_w( &li->li_cache, e );
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return( -1 );
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}
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int
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add_values(
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Entry *e,
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LDAPMod *mod,
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char *dn
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)
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{
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int i;
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Attribute *a;
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/* check if the values we're adding already exist */
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if ( (a = attr_find( e->e_attrs, mod->mod_type )) != NULL ) {
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for ( i = 0; mod->mod_bvalues[i] != NULL; i++ ) {
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if ( value_find( a->a_vals, mod->mod_bvalues[i],
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a->a_syntax, 3 ) == 0 ) {
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return( LDAP_TYPE_OR_VALUE_EXISTS );
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}
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}
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}
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/* no - add them */
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if( attr_merge( e, mod->mod_type, mod->mod_bvalues ) != 0 ) {
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return( LDAP_CONSTRAINT_VIOLATION );
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}
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return( LDAP_SUCCESS );
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}
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int
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delete_values(
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Entry *e,
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LDAPMod *mod,
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char *dn
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)
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{
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int i, j, k, found;
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Attribute *a;
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/* delete the entire attribute */
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if ( mod->mod_bvalues == NULL ) {
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Debug( LDAP_DEBUG_ARGS, "removing entire attribute %s\n",
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mod->mod_type, 0, 0 );
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return( attr_delete( &e->e_attrs, mod->mod_type ) ?
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LDAP_NO_SUCH_ATTRIBUTE : LDAP_SUCCESS );
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}
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/* delete specific values - find the attribute first */
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if ( (a = attr_find( e->e_attrs, mod->mod_type )) == NULL ) {
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Debug( LDAP_DEBUG_ARGS, "could not find attribute %s\n",
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mod->mod_type, 0, 0 );
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return( LDAP_NO_SUCH_ATTRIBUTE );
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}
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/* find each value to delete */
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for ( i = 0; mod->mod_bvalues[i] != NULL; i++ ) {
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found = 0;
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for ( j = 0; a->a_vals[j] != NULL; j++ ) {
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if ( value_cmp( mod->mod_bvalues[i], a->a_vals[j],
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a->a_syntax, 3 ) != 0 ) {
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continue;
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}
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found = 1;
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/* found a matching value - delete it */
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ber_bvfree( a->a_vals[j] );
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for ( k = j + 1; a->a_vals[k] != NULL; k++ ) {
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a->a_vals[k - 1] = a->a_vals[k];
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}
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a->a_vals[k - 1] = NULL;
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break;
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}
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/* looked through them all w/o finding it */
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if ( ! found ) {
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Debug( LDAP_DEBUG_ARGS,
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"could not find value for attr %s\n",
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mod->mod_type, 0, 0 );
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return( LDAP_NO_SUCH_ATTRIBUTE );
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}
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}
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return( LDAP_SUCCESS );
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}
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int
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replace_values(
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Entry *e,
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LDAPMod *mod,
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char *dn
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)
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{
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/* XXX: BEFORE YOU GET RID OF PREVIOUS VALUES REMOVE FROM INDEX
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* FILES
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*/
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(void) attr_delete( &e->e_attrs, mod->mod_type );
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if ( attr_merge( e, mod->mod_type, mod->mod_bvalues ) != 0 ) {
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return( LDAP_CONSTRAINT_VIOLATION );
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}
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return( LDAP_SUCCESS );
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}
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