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https://git.openldap.org/openldap/openldap.git
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458 lines
9.3 KiB
C
458 lines
9.3 KiB
C
/* syntax.c - routines to manage syntax definitions */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2019 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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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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struct sindexrec {
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char *sir_name;
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Syntax *sir_syn;
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};
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static Avlnode *syn_index = NULL;
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static LDAP_STAILQ_HEAD(SyntaxList, Syntax) syn_list
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= LDAP_STAILQ_HEAD_INITIALIZER(syn_list);
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/* Last hardcoded attribute registered */
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Syntax *syn_sys_tail;
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static int
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syn_index_cmp(
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const void *v_sir1,
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const void *v_sir2
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)
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{
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const struct sindexrec *sir1 = v_sir1, *sir2 = v_sir2;
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return (strcmp( sir1->sir_name, sir2->sir_name ));
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}
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static int
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syn_index_name_cmp(
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const void *name,
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const void *sir
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)
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{
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return (strcmp( name, ((const struct sindexrec *)sir)->sir_name ));
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}
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Syntax *
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syn_find( const char *synname )
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{
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struct sindexrec *sir = NULL;
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if ( (sir = avl_find( syn_index, synname, syn_index_name_cmp )) != NULL ) {
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return( sir->sir_syn );
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}
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return( NULL );
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}
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Syntax *
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syn_find_desc( const char *syndesc, int *len )
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{
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Syntax *synp;
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LDAP_STAILQ_FOREACH(synp, &syn_list, ssyn_next) {
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if ((*len = dscompare( synp->ssyn_syn.syn_desc, syndesc, '{' /*'}'*/ ))) {
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return synp;
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}
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}
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return( NULL );
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}
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int
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syn_is_sup( Syntax *syn, Syntax *sup )
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{
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int i;
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assert( syn != NULL );
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assert( sup != NULL );
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if ( syn == sup ) {
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return 1;
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}
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if ( syn->ssyn_sups == NULL ) {
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return 0;
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}
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for ( i = 0; syn->ssyn_sups[i]; i++ ) {
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if ( syn->ssyn_sups[i] == sup ) {
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return 1;
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}
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if ( syn_is_sup( syn->ssyn_sups[i], sup ) ) {
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return 1;
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}
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}
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return 0;
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}
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void
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syn_destroy( void )
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{
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Syntax *s;
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avl_free( syn_index, ldap_memfree );
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while( !LDAP_STAILQ_EMPTY( &syn_list ) ) {
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s = LDAP_STAILQ_FIRST( &syn_list );
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LDAP_STAILQ_REMOVE_HEAD( &syn_list, ssyn_next );
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if ( s->ssyn_sups ) {
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SLAP_FREE( s->ssyn_sups );
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}
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ldap_syntax_free( (LDAPSyntax *)s );
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}
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}
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static int
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syn_insert(
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Syntax *ssyn,
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Syntax *prev,
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const char **err )
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{
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struct sindexrec *sir;
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LDAP_STAILQ_NEXT( ssyn, ssyn_next ) = NULL;
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if ( ssyn->ssyn_oid ) {
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sir = (struct sindexrec *)
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SLAP_CALLOC( 1, sizeof(struct sindexrec) );
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if( sir == NULL ) {
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Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" );
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return LDAP_OTHER;
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}
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sir->sir_name = ssyn->ssyn_oid;
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sir->sir_syn = ssyn;
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if ( avl_insert( &syn_index, (caddr_t) sir,
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syn_index_cmp, avl_dup_error ) ) {
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*err = ssyn->ssyn_oid;
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ldap_memfree(sir);
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return SLAP_SCHERR_SYN_DUP;
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}
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/* FIX: temporal consistency check */
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syn_find(sir->sir_name);
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}
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if ( ssyn->ssyn_flags & SLAP_AT_HARDCODE ) {
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prev = syn_sys_tail;
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syn_sys_tail = ssyn;
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}
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if ( prev ) {
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LDAP_STAILQ_INSERT_AFTER( &syn_list, prev, ssyn, ssyn_next );
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} else {
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LDAP_STAILQ_INSERT_TAIL( &syn_list, ssyn, ssyn_next );
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}
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return 0;
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}
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int
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syn_add(
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LDAPSyntax *syn,
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int user,
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slap_syntax_defs_rec *def,
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Syntax **ssynp,
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Syntax *prev,
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const char **err )
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{
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Syntax *ssyn;
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int code = 0;
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if ( ssynp != NULL ) {
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*ssynp = NULL;
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}
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ssyn = (Syntax *) SLAP_CALLOC( 1, sizeof(Syntax) );
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if ( ssyn == NULL ) {
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Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" );
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return SLAP_SCHERR_OUTOFMEM;
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}
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AC_MEMCPY( &ssyn->ssyn_syn, syn, sizeof(LDAPSyntax) );
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LDAP_STAILQ_NEXT(ssyn,ssyn_next) = NULL;
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/*
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* note: ssyn_bvoid uses the same memory of ssyn_syn.syn_oid;
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* ssyn_oidlen is #defined as ssyn_bvoid.bv_len
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*/
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ssyn->ssyn_bvoid.bv_val = ssyn->ssyn_syn.syn_oid;
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ssyn->ssyn_oidlen = strlen(syn->syn_oid);
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ssyn->ssyn_flags = def->sd_flags;
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ssyn->ssyn_validate = def->sd_validate;
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ssyn->ssyn_pretty = def->sd_pretty;
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ssyn->ssyn_sups = NULL;
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#ifdef SLAPD_BINARY_CONVERSION
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ssyn->ssyn_ber2str = def->sd_ber2str;
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ssyn->ssyn_str2ber = def->sd_str2ber;
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#endif
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if ( def->sd_validate == NULL && def->sd_pretty == NULL && syn->syn_extensions != NULL ) {
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LDAPSchemaExtensionItem **lsei;
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Syntax *subst = NULL;
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for ( lsei = syn->syn_extensions; *lsei != NULL; lsei++) {
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if ( strcmp( (*lsei)->lsei_name, "X-SUBST" ) != 0 ) {
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continue;
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}
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assert( (*lsei)->lsei_values != NULL );
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if ( (*lsei)->lsei_values[0] == NULL
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|| (*lsei)->lsei_values[1] != NULL )
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{
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Debug( LDAP_DEBUG_ANY, "syn_add(%s): exactly one substitute syntax must be present\n",
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ssyn->ssyn_syn.syn_oid );
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SLAP_FREE( ssyn );
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return SLAP_SCHERR_SYN_SUBST_NOT_SPECIFIED;
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}
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subst = syn_find( (*lsei)->lsei_values[0] );
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if ( subst == NULL ) {
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Debug( LDAP_DEBUG_ANY, "syn_add(%s): substitute syntax %s not found\n",
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ssyn->ssyn_syn.syn_oid, (*lsei)->lsei_values[0] );
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SLAP_FREE( ssyn );
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return SLAP_SCHERR_SYN_SUBST_NOT_FOUND;
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}
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break;
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}
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if ( subst != NULL ) {
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ssyn->ssyn_flags = subst->ssyn_flags;
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ssyn->ssyn_validate = subst->ssyn_validate;
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ssyn->ssyn_pretty = subst->ssyn_pretty;
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ssyn->ssyn_sups = NULL;
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#ifdef SLAPD_BINARY_CONVERSION
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ssyn->ssyn_ber2str = subst->ssyn_ber2str;
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ssyn->ssyn_str2ber = subst->ssyn_str2ber;
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#endif
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}
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}
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if ( def->sd_sups != NULL ) {
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int cnt;
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for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ )
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;
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ssyn->ssyn_sups = (Syntax **)SLAP_CALLOC( cnt + 1,
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sizeof( Syntax * ) );
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if ( ssyn->ssyn_sups == NULL ) {
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Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n" );
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code = SLAP_SCHERR_OUTOFMEM;
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} else {
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for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ ) {
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ssyn->ssyn_sups[cnt] = syn_find( def->sd_sups[cnt] );
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if ( ssyn->ssyn_sups[cnt] == NULL ) {
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*err = def->sd_sups[cnt];
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code = SLAP_SCHERR_SYN_SUP_NOT_FOUND;
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}
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}
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}
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}
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if ( !user )
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ssyn->ssyn_flags |= SLAP_SYNTAX_HARDCODE;
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if ( code == 0 ) {
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code = syn_insert( ssyn, prev, err );
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}
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if ( code != 0 && ssyn != NULL ) {
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if ( ssyn->ssyn_sups != NULL ) {
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SLAP_FREE( ssyn->ssyn_sups );
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}
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SLAP_FREE( ssyn );
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ssyn = NULL;
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}
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if (ssynp ) {
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*ssynp = ssyn;
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}
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return code;
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}
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int
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register_syntax(
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slap_syntax_defs_rec *def )
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{
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LDAPSyntax *syn;
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int code;
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const char *err;
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syn = ldap_str2syntax( def->sd_desc, &code, &err, LDAP_SCHEMA_ALLOW_ALL);
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if ( !syn ) {
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Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s before %s in %s\n",
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ldap_scherr2str(code), err, def->sd_desc );
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return( -1 );
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}
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code = syn_add( syn, 0, def, NULL, NULL, &err );
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if ( code ) {
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Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s %s in %s\n",
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scherr2str(code), err, def->sd_desc );
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ldap_syntax_free( syn );
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return( -1 );
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}
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ldap_memfree( syn );
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return( 0 );
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}
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int
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syn_schema_info( Entry *e )
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{
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AttributeDescription *ad_ldapSyntaxes = slap_schema.si_ad_ldapSyntaxes;
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Syntax *syn;
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struct berval val;
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struct berval nval;
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LDAP_STAILQ_FOREACH(syn, &syn_list, ssyn_next ) {
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if ( ! syn->ssyn_validate ) {
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/* skip syntaxes without validators */
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continue;
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}
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if ( syn->ssyn_flags & SLAP_SYNTAX_HIDE ) {
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/* hide syntaxes */
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continue;
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}
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if ( ldap_syntax2bv( &syn->ssyn_syn, &val ) == NULL ) {
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return -1;
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}
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#if 0
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Debug( LDAP_DEBUG_TRACE, "Merging syn [%ld] %s\n",
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(long) val.bv_len, val.bv_val );
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#endif
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nval.bv_val = syn->ssyn_oid;
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nval.bv_len = strlen(syn->ssyn_oid);
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if( attr_merge_one( e, ad_ldapSyntaxes, &val, &nval ) )
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{
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return -1;
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}
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ldap_memfree( val.bv_val );
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}
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return 0;
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}
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void
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syn_delete( Syntax *syn )
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{
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LDAP_STAILQ_REMOVE(&syn_list, syn, Syntax, ssyn_next);
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}
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int
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syn_start( Syntax **syn )
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{
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assert( syn != NULL );
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*syn = LDAP_STAILQ_FIRST(&syn_list);
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return (*syn != NULL);
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}
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int
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syn_next( Syntax **syn )
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{
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assert( syn != NULL );
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#if 0 /* pedantic check: don't use this */
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{
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Syntax *tmp = NULL;
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LDAP_STAILQ_FOREACH(tmp,&syn_list,ssyn_next) {
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if ( tmp == *syn ) {
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break;
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}
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}
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assert( tmp != NULL );
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}
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#endif
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*syn = LDAP_STAILQ_NEXT(*syn,ssyn_next);
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return (*syn != NULL);
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}
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void
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syn_unparse( BerVarray *res, Syntax *start, Syntax *end, int sys )
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{
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Syntax *syn;
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int i, num;
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struct berval bv, *bva = NULL, idx;
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char ibuf[32];
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if ( !start )
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start = LDAP_STAILQ_FIRST( &syn_list );
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/* count the result size */
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i = 0;
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for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) {
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if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break;
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i++;
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if ( syn == end ) break;
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}
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if ( !i ) return;
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num = i;
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bva = ch_malloc( (num+1) * sizeof(struct berval) );
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BER_BVZERO( bva );
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idx.bv_val = ibuf;
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if ( sys ) {
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idx.bv_len = 0;
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ibuf[0] = '\0';
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}
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i = 0;
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for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) {
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if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break;
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if ( ldap_syntax2bv( &syn->ssyn_syn, &bv ) == NULL ) {
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ber_bvarray_free( bva );
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}
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if ( !sys ) {
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idx.bv_len = sprintf(idx.bv_val, "{%d}", i);
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}
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bva[i].bv_len = idx.bv_len + bv.bv_len;
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bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
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strcpy( bva[i].bv_val, ibuf );
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strcpy( bva[i].bv_val + idx.bv_len, bv.bv_val );
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i++;
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bva[i].bv_val = NULL;
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ldap_memfree( bv.bv_val );
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if ( syn == end ) break;
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}
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*res = bva;
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}
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