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https://git.openldap.org/openldap/openldap.git
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327 lines
6.7 KiB
C
327 lines
6.7 KiB
C
/* schema_check.c - routines to enforce schema definitions */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/ctype.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include "slap.h"
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#include "ldap_pvt.h"
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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static int oc_check_allowed(
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AttributeType *type,
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struct berval **oclist );
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#else
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static int oc_check_allowed(char *type, struct berval **oclist);
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#endif
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static char * oc_check_required(Entry *e, struct berval *ocname);
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/*
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* entry_schema_check - check that entry e conforms to the schema required
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* by its object class(es).
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*
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* returns 0 if so, non-zero otherwise.
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*/
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int
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schema_check_entry( Entry *e )
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{
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Attribute *a, *aoc;
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ObjectClass *oc;
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int i;
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int ret = 0;
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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static AttributeDescription *objectClass = NULL;
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#else
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static const char *objectClass = "objectclass";
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#endif
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if( !global_schemacheck ) return 0;
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/* find the object class attribute - could error out here */
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if ( (aoc = attr_find( e->e_attrs, objectClass )) == NULL ) {
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Debug( LDAP_DEBUG_ANY, "No object class for entry (%s)\n",
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e->e_dn, 0, 0 );
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return( 1 );
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}
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/* check that the entry has required attrs for each oc */
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for ( i = 0; aoc->a_vals[i] != NULL; i++ ) {
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if ( (oc = oc_find( aoc->a_vals[i]->bv_val )) == NULL ) {
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Debug( LDAP_DEBUG_ANY,
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"Objectclass \"%s\" not defined\n",
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aoc->a_vals[i]->bv_val, 0, 0 );
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}
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else
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{
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char *s = oc_check_required( e, aoc->a_vals[i] );
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if (s != NULL) {
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Debug( LDAP_DEBUG_ANY,
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"Entry (%s), oc \"%s\" requires attr \"%s\"\n",
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e->e_dn, aoc->a_vals[i]->bv_val, s );
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ret = 1;
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}
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}
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}
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if ( ret != 0 ) {
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return( ret );
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}
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/* check that each attr in the entry is allowed by some oc */
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for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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if ( oc_check_allowed( a->a_desc->ad_type, aoc->a_vals ) != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"Entry (%s), attr \"%s\" not allowed\n",
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e->e_dn, a->a_desc->ad_cname->bv_val, 0 );
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ret = 1;
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}
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#else
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if ( oc_check_allowed( a->a_type, aoc->a_vals ) != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"Entry (%s), attr \"%s\" not allowed\n",
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e->e_dn, a->a_type, 0 );
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ret = 1;
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}
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#endif
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}
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return( ret );
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}
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static char *
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oc_check_required( Entry *e, struct berval *ocname )
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{
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ObjectClass *oc;
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AttributeType *at;
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int i;
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Attribute *a;
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Debug( LDAP_DEBUG_TRACE,
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"oc_check_required entry (%s), objectclass \"%s\"\n",
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e->e_dn, ocname, 0 );
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/* find global oc defn. it we don't know about it assume it's ok */
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if ( (oc = oc_find( ocname->bv_val )) == NULL ) {
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return( 0 );
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}
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/* check for empty oc_required */
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if(oc->soc_required == NULL) {
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return( 0 );
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}
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/* for each required attribute */
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for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
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at = oc->soc_required[i];
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/* see if it's in the entry */
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for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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if( a->a_desc->ad_type == at ) {
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break;
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}
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#else
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char **pp;
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if ( at->sat_oid &&
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strcmp( a->a_type, at->sat_oid ) == 0 ) {
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break;
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}
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pp = at->sat_names;
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if ( pp == NULL ) {
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/* Empty name list => not found */
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a = NULL;
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break;
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}
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while ( *pp ) {
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if ( strcasecmp( a->a_type, *pp ) == 0 ) {
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break;
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}
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pp++;
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}
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if ( *pp ) {
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break;
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}
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#endif
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}
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/* not there => schema violation */
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if ( a == NULL ) {
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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return at->sat_cname;
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#else
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if ( at->sat_names && at->sat_names[0] ) {
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return at->sat_names[0];
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} else {
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return at->sat_oid;
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}
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#endif
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}
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}
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return( NULL );
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}
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static int
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oc_check_allowed(
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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AttributeType *at,
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#else
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char *type,
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#endif
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struct berval **ocl )
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{
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ObjectClass *oc;
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int i, j;
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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Debug( LDAP_DEBUG_TRACE,
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"oc_check_allowed type \"%s\"\n",
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at->sat_cname, 0, 0 );
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/* always allow objectclass attribute */
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if ( strcasecmp( at->sat_cname, "objectclass" ) == 0 ) {
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return( 0 );
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}
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#else
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AttributeType *at;
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char **pp;
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char *p;
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char *t;
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Debug( LDAP_DEBUG_TRACE,
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"oc_check_allowed type \"%s\"\n", type, 0, 0 );
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/* always allow objectclass attribute */
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if ( strcasecmp( type, "objectclass" ) == 0 ) {
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return( 0 );
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}
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#endif
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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if( is_at_operational(at) ) {
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return 0;
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}
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#else
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/*
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* The "type" we have received is actually an AttributeDescription.
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* Let's find out the corresponding type.
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*/
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p = strchr( type, ';' );
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if ( p ) {
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t = ch_malloc( p-type+1 );
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strncpy( t, type, p-type );
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t[p-type] = '\0';
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Debug( LDAP_DEBUG_TRACE,
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"oc_check_allowed type \"%s\" from \"%s\"\n",
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t, type, 0 );
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} else
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{
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t = type;
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}
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/*
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* All operational attributions are allowed by schema rules.
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*/
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if ( oc_check_op_attr( t ) ) {
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return( 0 );
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}
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#endif
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/* check that the type appears as req or opt in at least one oc */
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for ( i = 0; ocl[i] != NULL; i++ ) {
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/* if we know about the oc */
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if ( (oc = oc_find( ocl[i]->bv_val )) != NULL ) {
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/* does it require the type? */
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for ( j = 0; oc->soc_required != NULL &&
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oc->soc_required[j] != NULL; j++ )
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{
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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if( at == oc->soc_required[j] ) {
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return 0;
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}
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#else
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at = oc->soc_required[j];
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if ( at->sat_oid &&
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strcmp(at->sat_oid, t ) == 0 ) {
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if ( t != type )
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ldap_memfree( t );
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return( 0 );
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}
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pp = at->sat_names;
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if ( pp == NULL )
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continue;
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while ( *pp ) {
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if ( strcasecmp( *pp, t ) == 0 ) {
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if ( t != type )
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ldap_memfree( t );
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return( 0 );
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}
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pp++;
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}
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#endif
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}
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/* does it allow the type? */
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for ( j = 0; oc->soc_allowed != NULL &&
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oc->soc_allowed[j] != NULL; j++ )
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{
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#ifdef SLAPD_SCHEMA_NOT_COMPAT
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if( at == oc->soc_allowed[j] ) {
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return 0;
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}
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#else
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at = oc->soc_allowed[j];
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if ( at->sat_oid &&
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strcmp( at->sat_oid, t ) == 0 ) {
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if ( t != type )
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ldap_memfree( t );
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return( 0 );
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}
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pp = at->sat_names;
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if ( pp == NULL )
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continue;
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while ( *pp ) {
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if ( strcasecmp( *pp, t ) == 0 ||
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strcmp( *pp, "*" ) == 0 ) {
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if ( t != type )
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ldap_memfree( t );
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return( 0 );
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}
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pp++;
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}
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#endif
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}
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/* maybe the next oc allows it */
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#ifdef OC_UNDEFINED_IMPLES_EXTENSIBLE
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/* we don't know about the oc. assume it allows it */
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} else {
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if ( t != type )
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ldap_memfree( t );
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return( 0 );
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#endif
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}
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}
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#ifndef SLAPD_SCHEMA_NOT_COMPAT
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if ( t != type )
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ldap_memfree( t );
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#endif
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/* not allowed by any oc */
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return( 1 );
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}
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