Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 457 insertions, 0 deletions

diff --git a/servers/slapd/syntax.c b/servers/slapd/syntax.c
new file mode 100644
index 0000000..39cf43f
--- /dev/null
+++ b/servers/slapd/syntax.c
@@ -0,0 +1,457 @@
+/* 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;
+}
+