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-rw-r--r--servers/slapd/syntax.c457
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diff --git a/servers/slapd/syntax.c b/servers/slapd/syntax.c
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+/* syntax.c - routines to manage syntax definitions */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+
+struct sindexrec {
+ char *sir_name;
+ Syntax *sir_syn;
+};
+
+static Avlnode *syn_index = NULL;
+static LDAP_STAILQ_HEAD(SyntaxList, Syntax) syn_list
+ = LDAP_STAILQ_HEAD_INITIALIZER(syn_list);
+
+/* Last hardcoded attribute registered */
+Syntax *syn_sys_tail;
+
+static int
+syn_index_cmp(
+ const void *v_sir1,
+ const void *v_sir2
+)
+{
+ const struct sindexrec *sir1 = v_sir1, *sir2 = v_sir2;
+ return (strcmp( sir1->sir_name, sir2->sir_name ));
+}
+
+static int
+syn_index_name_cmp(
+ const void *name,
+ const void *sir
+)
+{
+ return (strcmp( name, ((const struct sindexrec *)sir)->sir_name ));
+}
+
+Syntax *
+syn_find( const char *synname )
+{
+ struct sindexrec *sir = NULL;
+
+ if ( (sir = avl_find( syn_index, synname, syn_index_name_cmp )) != NULL ) {
+ return( sir->sir_syn );
+ }
+ return( NULL );
+}
+
+Syntax *
+syn_find_desc( const char *syndesc, int *len )
+{
+ Syntax *synp;
+
+ LDAP_STAILQ_FOREACH(synp, &syn_list, ssyn_next) {
+ if ((*len = dscompare( synp->ssyn_syn.syn_desc, syndesc, '{' /*'}'*/ ))) {
+ return synp;
+ }
+ }
+ return( NULL );
+}
+
+int
+syn_is_sup( Syntax *syn, Syntax *sup )
+{
+ int i;
+
+ assert( syn != NULL );
+ assert( sup != NULL );
+
+ if ( syn == sup ) {
+ return 1;
+ }
+
+ if ( syn->ssyn_sups == NULL ) {
+ return 0;
+ }
+
+ for ( i = 0; syn->ssyn_sups[i]; i++ ) {
+ if ( syn->ssyn_sups[i] == sup ) {
+ return 1;
+ }
+
+ if ( syn_is_sup( syn->ssyn_sups[i], sup ) ) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void
+syn_destroy( void )
+{
+ Syntax *s;
+
+ avl_free( syn_index, ldap_memfree );
+ while( !LDAP_STAILQ_EMPTY( &syn_list ) ) {
+ s = LDAP_STAILQ_FIRST( &syn_list );
+ LDAP_STAILQ_REMOVE_HEAD( &syn_list, ssyn_next );
+ if ( s->ssyn_sups ) {
+ SLAP_FREE( s->ssyn_sups );
+ }
+ ldap_syntax_free( (LDAPSyntax *)s );
+ }
+}
+
+static int
+syn_insert(
+ Syntax *ssyn,
+ Syntax *prev,
+ const char **err )
+{
+ struct sindexrec *sir;
+
+ LDAP_STAILQ_NEXT( ssyn, ssyn_next ) = NULL;
+
+ if ( ssyn->ssyn_oid ) {
+ sir = (struct sindexrec *)
+ SLAP_CALLOC( 1, sizeof(struct sindexrec) );
+ if( sir == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
+ return LDAP_OTHER;
+ }
+ sir->sir_name = ssyn->ssyn_oid;
+ sir->sir_syn = ssyn;
+ if ( avl_insert( &syn_index, (caddr_t) sir,
+ syn_index_cmp, avl_dup_error ) ) {
+ *err = ssyn->ssyn_oid;
+ ldap_memfree(sir);
+ return SLAP_SCHERR_SYN_DUP;
+ }
+ /* FIX: temporal consistency check */
+ syn_find(sir->sir_name);
+ }
+
+ if ( ssyn->ssyn_flags & SLAP_AT_HARDCODE ) {
+ prev = syn_sys_tail;
+ syn_sys_tail = ssyn;
+ }
+
+ if ( prev ) {
+ LDAP_STAILQ_INSERT_AFTER( &syn_list, prev, ssyn, ssyn_next );
+ } else {
+ LDAP_STAILQ_INSERT_TAIL( &syn_list, ssyn, ssyn_next );
+ }
+ return 0;
+}
+
+int
+syn_add(
+ LDAPSyntax *syn,
+ int user,
+ slap_syntax_defs_rec *def,
+ Syntax **ssynp,
+ Syntax *prev,
+ const char **err )
+{
+ Syntax *ssyn;
+ int code = 0;
+
+ if ( ssynp != NULL ) {
+ *ssynp = NULL;
+ }
+
+ ssyn = (Syntax *) SLAP_CALLOC( 1, sizeof(Syntax) );
+ if ( ssyn == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
+ return SLAP_SCHERR_OUTOFMEM;
+ }
+
+ AC_MEMCPY( &ssyn->ssyn_syn, syn, sizeof(LDAPSyntax) );
+
+ LDAP_STAILQ_NEXT(ssyn,ssyn_next) = NULL;
+
+ /*
+ * note: ssyn_bvoid uses the same memory of ssyn_syn.syn_oid;
+ * ssyn_oidlen is #defined as ssyn_bvoid.bv_len
+ */
+ ssyn->ssyn_bvoid.bv_val = ssyn->ssyn_syn.syn_oid;
+ ssyn->ssyn_oidlen = strlen(syn->syn_oid);
+ ssyn->ssyn_flags = def->sd_flags;
+ ssyn->ssyn_validate = def->sd_validate;
+ ssyn->ssyn_pretty = def->sd_pretty;
+
+ ssyn->ssyn_sups = NULL;
+
+#ifdef SLAPD_BINARY_CONVERSION
+ ssyn->ssyn_ber2str = def->sd_ber2str;
+ ssyn->ssyn_str2ber = def->sd_str2ber;
+#endif
+
+ if ( def->sd_validate == NULL && def->sd_pretty == NULL && syn->syn_extensions != NULL ) {
+ LDAPSchemaExtensionItem **lsei;
+ Syntax *subst = NULL;
+
+ for ( lsei = syn->syn_extensions; *lsei != NULL; lsei++) {
+ if ( strcmp( (*lsei)->lsei_name, "X-SUBST" ) != 0 ) {
+ continue;
+ }
+
+ assert( (*lsei)->lsei_values != NULL );
+ if ( (*lsei)->lsei_values[0] == NULL
+ || (*lsei)->lsei_values[1] != NULL )
+ {
+ Debug( LDAP_DEBUG_ANY, "syn_add(%s): exactly one substitute syntax must be present\n",
+ ssyn->ssyn_syn.syn_oid, 0, 0 );
+ SLAP_FREE( ssyn );
+ return SLAP_SCHERR_SYN_SUBST_NOT_SPECIFIED;
+ }
+
+ subst = syn_find( (*lsei)->lsei_values[0] );
+ if ( subst == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "syn_add(%s): substitute syntax %s not found\n",
+ ssyn->ssyn_syn.syn_oid, (*lsei)->lsei_values[0], 0 );
+ SLAP_FREE( ssyn );
+ return SLAP_SCHERR_SYN_SUBST_NOT_FOUND;
+ }
+ break;
+ }
+
+ if ( subst != NULL ) {
+ ssyn->ssyn_flags = subst->ssyn_flags;
+ ssyn->ssyn_validate = subst->ssyn_validate;
+ ssyn->ssyn_pretty = subst->ssyn_pretty;
+
+ ssyn->ssyn_sups = NULL;
+
+#ifdef SLAPD_BINARY_CONVERSION
+ ssyn->ssyn_ber2str = subst->ssyn_ber2str;
+ ssyn->ssyn_str2ber = subst->ssyn_str2ber;
+#endif
+ }
+ }
+
+ if ( def->sd_sups != NULL ) {
+ int cnt;
+
+ for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ )
+ ;
+
+ ssyn->ssyn_sups = (Syntax **)SLAP_CALLOC( cnt + 1,
+ sizeof( Syntax * ) );
+ if ( ssyn->ssyn_sups == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
+ code = SLAP_SCHERR_OUTOFMEM;
+
+ } else {
+ for ( cnt = 0; def->sd_sups[cnt] != NULL; cnt++ ) {
+ ssyn->ssyn_sups[cnt] = syn_find( def->sd_sups[cnt] );
+ if ( ssyn->ssyn_sups[cnt] == NULL ) {
+ *err = def->sd_sups[cnt];
+ code = SLAP_SCHERR_SYN_SUP_NOT_FOUND;
+ }
+ }
+ }
+ }
+
+ if ( !user )
+ ssyn->ssyn_flags |= SLAP_SYNTAX_HARDCODE;
+
+ if ( code == 0 ) {
+ code = syn_insert( ssyn, prev, err );
+ }
+
+ if ( code != 0 && ssyn != NULL ) {
+ if ( ssyn->ssyn_sups != NULL ) {
+ SLAP_FREE( ssyn->ssyn_sups );
+ }
+ SLAP_FREE( ssyn );
+ ssyn = NULL;
+ }
+
+ if (ssynp ) {
+ *ssynp = ssyn;
+ }
+
+ return code;
+}
+
+int
+register_syntax(
+ slap_syntax_defs_rec *def )
+{
+ LDAPSyntax *syn;
+ int code;
+ const char *err;
+
+ syn = ldap_str2syntax( def->sd_desc, &code, &err, LDAP_SCHEMA_ALLOW_ALL);
+ if ( !syn ) {
+ Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s before %s in %s\n",
+ ldap_scherr2str(code), err, def->sd_desc );
+
+ return( -1 );
+ }
+
+ code = syn_add( syn, 0, def, NULL, NULL, &err );
+
+ if ( code ) {
+ Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s %s in %s\n",
+ scherr2str(code), err, def->sd_desc );
+ ldap_syntax_free( syn );
+
+ return( -1 );
+ }
+
+ ldap_memfree( syn );
+
+ return( 0 );
+}
+
+int
+syn_schema_info( Entry *e )
+{
+ AttributeDescription *ad_ldapSyntaxes = slap_schema.si_ad_ldapSyntaxes;
+ Syntax *syn;
+ struct berval val;
+ struct berval nval;
+
+ LDAP_STAILQ_FOREACH(syn, &syn_list, ssyn_next ) {
+ if ( ! syn->ssyn_validate ) {
+ /* skip syntaxes without validators */
+ continue;
+ }
+ if ( syn->ssyn_flags & SLAP_SYNTAX_HIDE ) {
+ /* hide syntaxes */
+ continue;
+ }
+
+ if ( ldap_syntax2bv( &syn->ssyn_syn, &val ) == NULL ) {
+ return -1;
+ }
+#if 0
+ Debug( LDAP_DEBUG_TRACE, "Merging syn [%ld] %s\n",
+ (long) val.bv_len, val.bv_val, 0 );
+#endif
+
+ nval.bv_val = syn->ssyn_oid;
+ nval.bv_len = strlen(syn->ssyn_oid);
+
+ if( attr_merge_one( e, ad_ldapSyntaxes, &val, &nval ) )
+ {
+ return -1;
+ }
+ ldap_memfree( val.bv_val );
+ }
+ return 0;
+}
+
+void
+syn_delete( Syntax *syn )
+{
+ LDAP_STAILQ_REMOVE(&syn_list, syn, Syntax, ssyn_next);
+}
+
+int
+syn_start( Syntax **syn )
+{
+ assert( syn != NULL );
+
+ *syn = LDAP_STAILQ_FIRST(&syn_list);
+
+ return (*syn != NULL);
+}
+
+int
+syn_next( Syntax **syn )
+{
+ assert( syn != NULL );
+
+#if 0 /* pedantic check: don't use this */
+ {
+ Syntax *tmp = NULL;
+
+ LDAP_STAILQ_FOREACH(tmp,&syn_list,ssyn_next) {
+ if ( tmp == *syn ) {
+ break;
+ }
+ }
+
+ assert( tmp != NULL );
+ }
+#endif
+
+ *syn = LDAP_STAILQ_NEXT(*syn,ssyn_next);
+
+ return (*syn != NULL);
+}
+
+void
+syn_unparse( BerVarray *res, Syntax *start, Syntax *end, int sys )
+{
+ Syntax *syn;
+ int i, num;
+ struct berval bv, *bva = NULL, idx;
+ char ibuf[32];
+
+ if ( !start )
+ start = LDAP_STAILQ_FIRST( &syn_list );
+
+ /* count the result size */
+ i = 0;
+ for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) {
+ if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break;
+ i++;
+ if ( syn == end ) break;
+ }
+ if ( !i ) return;
+
+ num = i;
+ bva = ch_malloc( (num+1) * sizeof(struct berval) );
+ BER_BVZERO( bva );
+ idx.bv_val = ibuf;
+ if ( sys ) {
+ idx.bv_len = 0;
+ ibuf[0] = '\0';
+ }
+ i = 0;
+ for ( syn = start; syn; syn = LDAP_STAILQ_NEXT( syn, ssyn_next ) ) {
+ if ( sys && !( syn->ssyn_flags & SLAP_SYNTAX_HARDCODE ) ) break;
+ if ( ldap_syntax2bv( &syn->ssyn_syn, &bv ) == NULL ) {
+ ber_bvarray_free( bva );
+ }
+ if ( !sys ) {
+ idx.bv_len = sprintf(idx.bv_val, "{%d}", i);
+ }
+ bva[i].bv_len = idx.bv_len + bv.bv_len;
+ bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
+ strcpy( bva[i].bv_val, ibuf );
+ strcpy( bva[i].bv_val + idx.bv_len, bv.bv_val );
+ i++;
+ bva[i].bv_val = NULL;
+ ldap_memfree( bv.bv_val );
+ if ( syn == end ) break;
+ }
+ *res = bva;
+}
+