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, 3385 insertions, 0 deletions

diff --git a/libraries/libldap/schema.c b/libraries/libldap/schema.c
new file mode 100644
index 0000000..24c6efe
--- /dev/null
+++ b/libraries/libldap/schema.c
@@ -0,0 +1,3385 @@
+/* $OpenLDAP$ */
+/* 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>.
+ */
+
+/*
+ * schema.c:  parsing routines used by servers and clients to process
+ *	schema definitions
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/stdlib.h>
+
+#include <ac/string.h>
+#include <ac/time.h>
+
+#include "ldap-int.h"
+
+#include <ldap_schema.h>
+
+static const char EndOfInput[] = "end of input";
+
+static const char *
+choose_name( char *names[], const char *fallback )
+{
+	return (names != NULL && names[0] != NULL) ? names[0] : fallback;
+}
+
+LDAP_CONST char *
+ldap_syntax2name( LDAPSyntax * syn )
+{
+	if (!syn) return NULL;
+	return( syn->syn_oid );
+}
+
+LDAP_CONST char *
+ldap_matchingrule2name( LDAPMatchingRule * mr )
+{
+	if (!mr) return NULL;
+	return( choose_name( mr->mr_names, mr->mr_oid ) );
+}
+
+LDAP_CONST char *
+ldap_matchingruleuse2name( LDAPMatchingRuleUse * mru )
+{
+	if (!mru) return NULL;
+	return( choose_name( mru->mru_names, mru->mru_oid ) );
+}
+
+LDAP_CONST char *
+ldap_attributetype2name( LDAPAttributeType * at )
+{
+	if (!at) return NULL;
+	return( choose_name( at->at_names, at->at_oid ) );
+}
+
+LDAP_CONST char *
+ldap_objectclass2name( LDAPObjectClass * oc )
+{
+	if (!oc) return NULL;
+	return( choose_name( oc->oc_names, oc->oc_oid ) );
+}
+
+LDAP_CONST char *
+ldap_contentrule2name( LDAPContentRule * cr )
+{
+	if (!cr) return NULL;
+	return( choose_name( cr->cr_names, cr->cr_oid ) );
+}
+
+LDAP_CONST char *
+ldap_nameform2name( LDAPNameForm * nf )
+{
+	if (!nf) return NULL;
+	return( choose_name( nf->nf_names, nf->nf_oid ) );
+}
+
+LDAP_CONST char *
+ldap_structurerule2name( LDAPStructureRule * sr )
+{
+	if (!sr) return NULL;
+	return( choose_name( sr->sr_names, NULL ) );
+}
+
+/*
+ * When pretty printing the entities we will be appending to a buffer.
+ * Since checking for overflow, realloc'ing and checking if no error
+ * is extremely boring, we will use a protection layer that will let
+ * us blissfully ignore the error until the end.  This layer is
+ * implemented with the help of the next type.
+ */
+
+typedef struct safe_string {
+	char * val;
+	ber_len_t size;
+	ber_len_t pos;
+	int at_whsp;
+} safe_string;
+
+static safe_string *
+new_safe_string(int size)
+{
+	safe_string * ss;
+	
+	ss = LDAP_MALLOC(sizeof(safe_string));
+	if ( !ss )
+		return(NULL);
+
+	ss->val = LDAP_MALLOC(size);
+	if ( !ss->val ) {
+		LDAP_FREE(ss);
+		return(NULL);
+	}
+
+	ss->size = size;
+	ss->pos = 0;
+	ss->at_whsp = 0;
+
+	return ss;
+}
+
+static void
+safe_string_free(safe_string * ss)
+{
+	if ( !ss )
+		return;
+	LDAP_FREE(ss->val);
+	LDAP_FREE(ss);
+}
+
+#if 0	/* unused */
+static char *
+safe_string_val(safe_string * ss)
+{
+	ss->val[ss->pos] = '\0';
+	return(ss->val);
+}
+#endif
+
+static char *
+safe_strdup(safe_string * ss)
+{
+	char *ret = LDAP_MALLOC(ss->pos+1);
+	if (!ret)
+		return NULL;
+	AC_MEMCPY(ret, ss->val, ss->pos);
+	ret[ss->pos] = '\0';
+	return ret;
+}
+
+static int
+append_to_safe_string(safe_string * ss, char * s)
+{
+	int l = strlen(s);
+	char * temp;
+
+	/*
+	 * Some runaway process is trying to append to a string that
+	 * overflowed and we could not extend.
+	 */
+	if ( !ss->val )
+		return -1;
+
+	/* We always make sure there is at least one position available */
+	if ( ss->pos + l >= ss->size-1 ) {
+		ss->size *= 2;
+		if ( ss->pos + l >= ss->size-1 ) {
+			ss->size = ss->pos + l + 1;
+		}
+
+		temp = LDAP_REALLOC(ss->val, ss->size);
+		if ( !temp ) {
+			/* Trouble, out of memory */
+			LDAP_FREE(ss->val);
+			return -1;
+		}
+		ss->val = temp;
+	}
+	strncpy(&ss->val[ss->pos], s, l);
+	ss->pos += l;
+	if ( ss->pos > 0 && LDAP_SPACE(ss->val[ss->pos-1]) )
+		ss->at_whsp = 1;
+	else
+		ss->at_whsp = 0;
+
+	return 0;
+}
+
+static int
+print_literal(safe_string *ss, char *s)
+{
+	return(append_to_safe_string(ss,s));
+}
+
+static int
+print_whsp(safe_string *ss)
+{
+	if ( ss->at_whsp )
+		return(append_to_safe_string(ss,""));
+	else
+		return(append_to_safe_string(ss," "));
+}
+
+static int
+print_numericoid(safe_string *ss, char *s)
+{
+	if ( s )
+		return(append_to_safe_string(ss,s));
+	else
+		return(append_to_safe_string(ss,""));
+}
+
+/* This one is identical to print_qdescr */
+static int
+print_qdstring(safe_string *ss, char *s)
+{
+	print_whsp(ss);
+	print_literal(ss,"'");
+	append_to_safe_string(ss,s);
+	print_literal(ss,"'");
+	return(print_whsp(ss));
+}
+
+static int
+print_qdescr(safe_string *ss, char *s)
+{
+	print_whsp(ss);
+	print_literal(ss,"'");
+	append_to_safe_string(ss,s);
+	print_literal(ss,"'");
+	return(print_whsp(ss));
+}
+
+static int
+print_qdescrlist(safe_string *ss, char **sa)
+{
+	char **sp;
+	int ret = 0;
+	
+	for (sp=sa; *sp; sp++) {
+		ret = print_qdescr(ss,*sp);
+	}
+	/* If the list was empty, we return zero that is potentially
+	 * incorrect, but since we will be still appending things, the
+	 * overflow will be detected later.  Maybe FIX.
+	 */
+	return(ret);
+}
+
+static int
+print_qdescrs(safe_string *ss, char **sa)
+{
+	/* The only way to represent an empty list is as a qdescrlist
+	 * so, if the list is empty we treat it as a long list.
+	 * Really, this is what the syntax mandates.  We should not
+	 * be here if the list was empty, but if it happens, a label
+	 * has already been output and we cannot undo it.
+	 */
+	if ( !sa[0] || ( sa[0] && sa[1] ) ) {
+		print_whsp(ss);
+		print_literal(ss,"("/*)*/);
+		print_qdescrlist(ss,sa);
+		print_literal(ss,/*(*/")");
+		return(print_whsp(ss));
+	} else {
+	  return(print_qdescr(ss,*sa));
+	}
+}
+
+static int
+print_woid(safe_string *ss, char *s)
+{
+	print_whsp(ss);
+	append_to_safe_string(ss,s);
+	return print_whsp(ss);
+}
+
+static int
+print_oidlist(safe_string *ss, char **sa)
+{
+	char **sp;
+
+	for (sp=sa; *(sp+1); sp++) {
+		print_woid(ss,*sp);
+		print_literal(ss,"$");
+	}
+	return(print_woid(ss,*sp));
+}
+
+static int
+print_oids(safe_string *ss, char **sa)
+{
+	if ( sa[0] && sa[1] ) {
+		print_literal(ss,"("/*)*/);
+		print_oidlist(ss,sa);
+		print_whsp(ss);
+		return(print_literal(ss,/*(*/")"));
+	} else {
+		return(print_woid(ss,*sa));
+	}
+}
+
+static int
+print_noidlen(safe_string *ss, char *s, int l)
+{
+	char buf[64];
+	int ret;
+
+	ret = print_numericoid(ss,s);
+	if ( l ) {
+		snprintf(buf, sizeof buf, "{%d}",l);
+		ret = print_literal(ss,buf);
+	}
+	return(ret);
+}
+
+static int
+print_ruleid(safe_string *ss, int rid)
+{
+	char buf[64];
+	snprintf(buf, sizeof buf, "%d", rid);
+	return print_literal(ss,buf);
+}
+
+static int
+print_ruleids(safe_string *ss, int n, int *rids)
+{
+	int i;
+
+	if( n == 1 ) {
+		print_ruleid(ss,rids[0]);
+		return print_whsp(ss);
+	} else {
+		print_literal(ss,"("/*)*/);
+		for( i=0; i<n; i++ ) {
+			print_whsp(ss);
+			print_ruleid(ss,rids[i]);
+		}
+		print_whsp(ss);
+		return print_literal(ss,/*(*/")");
+	}
+}
+
+
+static int
+print_extensions(safe_string *ss, LDAPSchemaExtensionItem **extensions)
+{
+	LDAPSchemaExtensionItem **ext;
+
+	if ( extensions ) {
+		print_whsp(ss);
+		for ( ext = extensions; *ext != NULL; ext++ ) {
+			print_literal(ss, (*ext)->lsei_name);
+			print_whsp(ss);
+			/* Should be print_qdstrings */
+			print_qdescrs(ss, (*ext)->lsei_values);
+			print_whsp(ss);
+		}
+	}
+
+	return 0;
+}
+
+char *
+ldap_syntax2str( LDAPSyntax * syn )
+{
+	struct berval bv;
+	if (ldap_syntax2bv( syn, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_syntax2bv( LDAPSyntax * syn, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !syn || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, syn->syn_oid);
+	print_whsp(ss);
+
+	if ( syn->syn_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,syn->syn_desc);
+	}
+
+	print_whsp(ss);
+
+	print_extensions(ss, syn->syn_extensions);
+
+	print_literal(ss,/*(*/ ")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_matchingrule2str( LDAPMatchingRule * mr )
+{
+	struct berval bv;
+	if (ldap_matchingrule2bv( mr, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_matchingrule2bv( LDAPMatchingRule * mr, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !mr || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"(" /*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, mr->mr_oid);
+	print_whsp(ss);
+
+	if ( mr->mr_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,mr->mr_names);
+	}
+
+	if ( mr->mr_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,mr->mr_desc);
+	}
+
+	if ( mr->mr_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	if ( mr->mr_syntax_oid ) {
+		print_literal(ss,"SYNTAX");
+		print_whsp(ss);
+		print_literal(ss, mr->mr_syntax_oid);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+
+	print_extensions(ss, mr->mr_extensions);
+
+	print_literal(ss,/*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_matchingruleuse2str( LDAPMatchingRuleUse * mru )
+{
+	struct berval bv;
+	if (ldap_matchingruleuse2bv( mru, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_matchingruleuse2bv( LDAPMatchingRuleUse * mru, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !mru || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"(" /*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, mru->mru_oid);
+	print_whsp(ss);
+
+	if ( mru->mru_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,mru->mru_names);
+	}
+
+	if ( mru->mru_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,mru->mru_desc);
+	}
+
+	if ( mru->mru_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	if ( mru->mru_applies_oids ) {
+		print_literal(ss,"APPLIES");
+		print_whsp(ss);
+		print_oids(ss, mru->mru_applies_oids);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+
+	print_extensions(ss, mru->mru_extensions);
+
+	print_literal(ss,/*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_objectclass2str( LDAPObjectClass * oc )
+{
+	struct berval bv;
+	if (ldap_objectclass2bv( oc, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_objectclass2bv( LDAPObjectClass * oc, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !oc || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, oc->oc_oid);
+	print_whsp(ss);
+
+	if ( oc->oc_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,oc->oc_names);
+	}
+
+	if ( oc->oc_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,oc->oc_desc);
+	}
+
+	if ( oc->oc_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	if ( oc->oc_sup_oids ) {
+		print_literal(ss,"SUP");
+		print_whsp(ss);
+		print_oids(ss,oc->oc_sup_oids);
+		print_whsp(ss);
+	}
+
+	switch (oc->oc_kind) {
+	case LDAP_SCHEMA_ABSTRACT:
+		print_literal(ss,"ABSTRACT");
+		break;
+	case LDAP_SCHEMA_STRUCTURAL:
+		print_literal(ss,"STRUCTURAL");
+		break;
+	case LDAP_SCHEMA_AUXILIARY:
+		print_literal(ss,"AUXILIARY");
+		break;
+	default:
+		print_literal(ss,"KIND-UNKNOWN");
+		break;
+	}
+	print_whsp(ss);
+	
+	if ( oc->oc_at_oids_must ) {
+		print_literal(ss,"MUST");
+		print_whsp(ss);
+		print_oids(ss,oc->oc_at_oids_must);
+		print_whsp(ss);
+	}
+
+	if ( oc->oc_at_oids_may ) {
+		print_literal(ss,"MAY");
+		print_whsp(ss);
+		print_oids(ss,oc->oc_at_oids_may);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+
+	print_extensions(ss, oc->oc_extensions);
+
+	print_literal(ss, /*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_contentrule2str( LDAPContentRule * cr )
+{
+	struct berval bv;
+	if (ldap_contentrule2bv( cr, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_contentrule2bv( LDAPContentRule * cr, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !cr || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, cr->cr_oid);
+	print_whsp(ss);
+
+	if ( cr->cr_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,cr->cr_names);
+	}
+
+	if ( cr->cr_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,cr->cr_desc);
+	}
+
+	if ( cr->cr_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	if ( cr->cr_oc_oids_aux ) {
+		print_literal(ss,"AUX");
+		print_whsp(ss);
+		print_oids(ss,cr->cr_oc_oids_aux);
+		print_whsp(ss);
+	}
+
+	if ( cr->cr_at_oids_must ) {
+		print_literal(ss,"MUST");
+		print_whsp(ss);
+		print_oids(ss,cr->cr_at_oids_must);
+		print_whsp(ss);
+	}
+
+	if ( cr->cr_at_oids_may ) {
+		print_literal(ss,"MAY");
+		print_whsp(ss);
+		print_oids(ss,cr->cr_at_oids_may);
+		print_whsp(ss);
+	}
+
+	if ( cr->cr_at_oids_not ) {
+		print_literal(ss,"NOT");
+		print_whsp(ss);
+		print_oids(ss,cr->cr_at_oids_not);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+	print_extensions(ss, cr->cr_extensions);
+
+	print_literal(ss, /*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_structurerule2str( LDAPStructureRule * sr )
+{
+	struct berval bv;
+	if (ldap_structurerule2bv( sr, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_structurerule2bv( LDAPStructureRule * sr, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !sr || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_ruleid(ss, sr->sr_ruleid);
+	print_whsp(ss);
+
+	if ( sr->sr_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,sr->sr_names);
+	}
+
+	if ( sr->sr_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,sr->sr_desc);
+	}
+
+	if ( sr->sr_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	print_literal(ss,"FORM");
+	print_whsp(ss);
+	print_woid(ss,sr->sr_nameform);
+	print_whsp(ss);
+
+	if ( sr->sr_nsup_ruleids ) {
+		print_literal(ss,"SUP");
+		print_whsp(ss);
+		print_ruleids(ss,sr->sr_nsup_ruleids,sr->sr_sup_ruleids);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+	print_extensions(ss, sr->sr_extensions);
+
+	print_literal(ss, /*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+
+char *
+ldap_nameform2str( LDAPNameForm * nf )
+{
+	struct berval bv;
+	if (ldap_nameform2bv( nf, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_nameform2bv( LDAPNameForm * nf, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !nf || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, nf->nf_oid);
+	print_whsp(ss);
+
+	if ( nf->nf_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,nf->nf_names);
+	}
+
+	if ( nf->nf_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,nf->nf_desc);
+	}
+
+	if ( nf->nf_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	print_literal(ss,"OC");
+	print_whsp(ss);
+	print_woid(ss,nf->nf_objectclass);
+	print_whsp(ss);
+
+	print_literal(ss,"MUST");
+	print_whsp(ss);
+	print_oids(ss,nf->nf_at_oids_must);
+	print_whsp(ss);
+
+
+	if ( nf->nf_at_oids_may ) {
+		print_literal(ss,"MAY");
+		print_whsp(ss);
+		print_oids(ss,nf->nf_at_oids_may);
+		print_whsp(ss);
+	}
+
+	print_whsp(ss);
+	print_extensions(ss, nf->nf_extensions);
+
+	print_literal(ss, /*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+char *
+ldap_attributetype2str( LDAPAttributeType * at )
+{
+	struct berval bv;
+	if (ldap_attributetype2bv( at, &bv ))
+		return(bv.bv_val);
+	else
+		return NULL;
+}
+
+struct berval *
+ldap_attributetype2bv(  LDAPAttributeType * at, struct berval *bv )
+{
+	safe_string * ss;
+
+	if ( !at || !bv )
+		return NULL;
+
+	ss = new_safe_string(256);
+	if ( !ss )
+		return NULL;
+
+	print_literal(ss,"("/*)*/);
+	print_whsp(ss);
+
+	print_numericoid(ss, at->at_oid);
+	print_whsp(ss);
+
+	if ( at->at_names ) {
+		print_literal(ss,"NAME");
+		print_qdescrs(ss,at->at_names);
+	}
+
+	if ( at->at_desc ) {
+		print_literal(ss,"DESC");
+		print_qdstring(ss,at->at_desc);
+	}
+
+	if ( at->at_obsolete ) {
+		print_literal(ss, "OBSOLETE");
+		print_whsp(ss);
+	}
+
+	if ( at->at_sup_oid ) {
+		print_literal(ss,"SUP");
+		print_woid(ss,at->at_sup_oid);
+	}
+
+	if ( at->at_equality_oid ) {
+		print_literal(ss,"EQUALITY");
+		print_woid(ss,at->at_equality_oid);
+	}
+
+	if ( at->at_ordering_oid ) {
+		print_literal(ss,"ORDERING");
+		print_woid(ss,at->at_ordering_oid);
+	}
+
+	if ( at->at_substr_oid ) {
+		print_literal(ss,"SUBSTR");
+		print_woid(ss,at->at_substr_oid);
+	}
+
+	if ( at->at_syntax_oid ) {
+		print_literal(ss,"SYNTAX");
+		print_whsp(ss);
+		print_noidlen(ss,at->at_syntax_oid,at->at_syntax_len);
+		print_whsp(ss);
+	}
+
+	if ( at->at_single_value == LDAP_SCHEMA_YES ) {
+		print_literal(ss,"SINGLE-VALUE");
+		print_whsp(ss);
+	}
+
+	if ( at->at_collective == LDAP_SCHEMA_YES ) {
+		print_literal(ss,"COLLECTIVE");
+		print_whsp(ss);
+	}
+
+	if ( at->at_no_user_mod == LDAP_SCHEMA_YES ) {
+		print_literal(ss,"NO-USER-MODIFICATION");
+		print_whsp(ss);
+	}
+
+	if ( at->at_usage != LDAP_SCHEMA_USER_APPLICATIONS ) {
+		print_literal(ss,"USAGE");
+		print_whsp(ss);
+		switch (at->at_usage) {
+		case LDAP_SCHEMA_DIRECTORY_OPERATION:
+			print_literal(ss,"directoryOperation");
+			break;
+		case LDAP_SCHEMA_DISTRIBUTED_OPERATION:
+			print_literal(ss,"distributedOperation");
+			break;
+		case LDAP_SCHEMA_DSA_OPERATION:
+			print_literal(ss,"dSAOperation");
+			break;
+		default:
+			print_literal(ss,"UNKNOWN");
+			break;
+		}
+	}
+	
+	print_whsp(ss);
+
+	print_extensions(ss, at->at_extensions);
+
+	print_literal(ss,/*(*/")");
+
+	bv->bv_val = safe_strdup(ss);
+	bv->bv_len = ss->pos;
+	safe_string_free(ss);
+	return(bv);
+}
+
+/*
+ * Now come the parsers.  There is one parser for each entity type:
+ * objectclasses, attributetypes, etc.
+ *
+ * Each of them is written as a recursive-descent parser, except that
+ * none of them is really recursive.  But the idea is kept: there
+ * is one routine per non-terminal that eithers gobbles lexical tokens
+ * or calls lower-level routines, etc.
+ *
+ * The scanner is implemented in the routine get_token.  Actually,
+ * get_token is more than a scanner and will return tokens that are
+ * in fact non-terminals in the grammar.  So you can see the whole
+ * approach as the combination of a low-level bottom-up recognizer
+ * combined with a scanner and a number of top-down parsers.  Or just
+ * consider that the real grammars recognized by the parsers are not
+ * those of the standards.  As a matter of fact, our parsers are more
+ * liberal than the spec when there is no ambiguity.
+ *
+ * The difference is pretty academic (modulo bugs or incorrect
+ * interpretation of the specs).
+ */
+
+typedef enum tk_t {
+	TK_NOENDQUOTE	= -2,
+	TK_OUTOFMEM	= -1,
+	TK_EOS		= 0,
+	TK_UNEXPCHAR	= 1,
+	TK_BAREWORD	= 2,
+	TK_QDSTRING	= 3,
+	TK_LEFTPAREN	= 4,
+	TK_RIGHTPAREN	= 5,
+	TK_DOLLAR	= 6,
+	TK_QDESCR	= TK_QDSTRING
+} tk_t;
+
+static tk_t
+get_token( const char ** sp, char ** token_val )
+{
+	tk_t kind;
+	const char * p;
+	const char * q;
+	char * res;
+
+	*token_val = NULL;
+	switch (**sp) {
+	case '\0':
+		kind = TK_EOS;
+		(*sp)++;
+		break;
+	case '(':
+		kind = TK_LEFTPAREN;
+		(*sp)++;
+		break;
+	case ')':
+		kind = TK_RIGHTPAREN;
+		(*sp)++;
+		break;
+	case '$':
+		kind = TK_DOLLAR;
+		(*sp)++;
+		break;
+	case '\'':
+		kind = TK_QDSTRING;
+		(*sp)++;
+		p = *sp;
+		while ( **sp != '\'' && **sp != '\0' )
+			(*sp)++;
+		if ( **sp == '\'' ) {
+			q = *sp;
+			res = LDAP_MALLOC(q-p+1);
+			if ( !res ) {
+				kind = TK_OUTOFMEM;
+			} else {
+				strncpy(res,p,q-p);
+				res[q-p] = '\0';
+				*token_val = res;
+			}
+			(*sp)++;
+		} else {
+			kind = TK_NOENDQUOTE;
+		}
+		break;
+	default:
+		kind = TK_BAREWORD;
+		p = *sp;
+		while ( !LDAP_SPACE(**sp) &&
+			**sp != '(' &&
+			**sp != ')' &&
+			**sp != '$' &&
+			**sp != '\'' &&
+			/* for suggested minimum upper bound on the number
+			 * of characters (RFC 4517) */
+			**sp != '{' &&
+			**sp != '\0' )
+			(*sp)++;
+		q = *sp;
+		res = LDAP_MALLOC(q-p+1);
+		if ( !res ) {
+			kind = TK_OUTOFMEM;
+		} else {
+			strncpy(res,p,q-p);
+			res[q-p] = '\0';
+			*token_val = res;
+		}
+		break;
+/*  		kind = TK_UNEXPCHAR; */
+/*  		break; */
+	}
+	
+	return kind;
+}
+
+/* Gobble optional whitespace */
+static void
+parse_whsp(const char **sp)
+{
+	while (LDAP_SPACE(**sp))
+		(*sp)++;
+}
+
+/* TBC:!!
+ * General note for all parsers: to guarantee the algorithm halts they
+ * must always advance the pointer even when an error is found.  For
+ * this one is not that important since an error here is fatal at the
+ * upper layers, but it is a simple strategy that will not get in
+ * endless loops.
+ */
+
+/* Parse a sequence of dot-separated decimal strings */
+char *
+ldap_int_parse_numericoid(const char **sp, int *code, const int flags)
+{
+	char * res = NULL;
+	const char * start = *sp;
+	int len;
+	int quoted = 0;
+
+	/* Netscape puts the SYNTAX value in quotes (incorrectly) */
+	if ( flags & LDAP_SCHEMA_ALLOW_QUOTED && **sp == '\'' ) {
+		quoted = 1;
+		(*sp)++;
+		start++;
+	}
+	/* Each iteration of this loop gets one decimal string */
+	while (**sp) {
+		if ( !LDAP_DIGIT(**sp) ) {
+			/*
+			 * Initial char is not a digit or char after dot is
+			 * not a digit
+			 */
+			*code = LDAP_SCHERR_NODIGIT;
+			return NULL;
+		}
+		(*sp)++;
+		while ( LDAP_DIGIT(**sp) )
+			(*sp)++;
+		if ( **sp != '.' )
+			break;
+		/* Otherwise, gobble the dot and loop again */
+		(*sp)++;
+	}
+	/* Now *sp points at the char past the numericoid. Perfect. */
+	len = *sp - start;
+	if ( flags & LDAP_SCHEMA_ALLOW_QUOTED && quoted ) {
+		if ( **sp == '\'' ) {
+			(*sp)++;
+		} else {
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			return NULL;
+		}
+	}
+	if (flags & LDAP_SCHEMA_SKIP) {
+		res = (char *)start;
+	} else {
+		res = LDAP_MALLOC(len+1);
+		if (!res) {
+			*code = LDAP_SCHERR_OUTOFMEM;
+			return(NULL);
+		}
+		strncpy(res,start,len);
+		res[len] = '\0';
+	}
+	return(res);
+}
+
+/* Parse a sequence of dot-separated decimal strings */
+int
+ldap_int_parse_ruleid(const char **sp, int *code, const int flags, int *ruleid)
+{
+	*ruleid=0;
+
+	if ( !LDAP_DIGIT(**sp) ) {
+		*code = LDAP_SCHERR_NODIGIT;
+		return -1;
+	}
+	*ruleid = (**sp) - '0';
+	(*sp)++;
+
+	while ( LDAP_DIGIT(**sp) ) {
+		*ruleid *= 10;
+		*ruleid += (**sp) - '0';
+		(*sp)++;
+	}
+
+	return 0;
+}
+
+/* Parse a qdescr or a list of them enclosed in () */
+static char **
+parse_qdescrs(const char **sp, int *code)
+{
+	char ** res;
+	char ** res1;
+	tk_t kind;
+	char * sval;
+	int size;
+	int pos;
+
+	parse_whsp(sp);
+	kind = get_token(sp,&sval);
+	if ( kind == TK_LEFTPAREN ) {
+		/* Let's presume there will be at least 2 entries */
+		size = 3;
+		res = LDAP_CALLOC(3,sizeof(char *));
+		if ( !res ) {
+			*code = LDAP_SCHERR_OUTOFMEM;
+			return NULL;
+		}
+		pos = 0;
+		while (1) {
+			parse_whsp(sp);
+			kind = get_token(sp,&sval);
+			if ( kind == TK_RIGHTPAREN )
+				break;
+			if ( kind == TK_QDESCR ) {
+				if ( pos == size-2 ) {
+					size++;
+					res1 = LDAP_REALLOC(res,size*sizeof(char *));
+					if ( !res1 ) {
+						LDAP_VFREE(res);
+						LDAP_FREE(sval);
+						*code = LDAP_SCHERR_OUTOFMEM;
+						return(NULL);
+					}
+					res = res1;
+				}
+				res[pos++] = sval;
+				res[pos] = NULL;
+				parse_whsp(sp);
+			} else {
+				LDAP_VFREE(res);
+				LDAP_FREE(sval);
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				return(NULL);
+			}
+		}
+		parse_whsp(sp);
+		return(res);
+	} else if ( kind == TK_QDESCR ) {
+		res = LDAP_CALLOC(2,sizeof(char *));
+		if ( !res ) {
+			*code = LDAP_SCHERR_OUTOFMEM;
+			return NULL;
+		}
+		res[0] = sval;
+		res[1] = NULL;
+		parse_whsp(sp);
+		return res;
+	} else {
+		LDAP_FREE(sval);
+		*code = LDAP_SCHERR_BADNAME;
+		return NULL;
+	}
+}
+
+/* Parse a woid */
+static char *
+parse_woid(const char **sp, int *code)
+{
+	char * sval;
+	tk_t kind;
+
+	parse_whsp(sp);
+	kind = get_token(sp, &sval);
+	if ( kind != TK_BAREWORD ) {
+		LDAP_FREE(sval);
+		*code = LDAP_SCHERR_UNEXPTOKEN;
+		return NULL;
+	}
+	parse_whsp(sp);
+	return sval;
+}
+
+/* Parse a noidlen */
+static char *
+parse_noidlen(const char **sp, int *code, int *len, int flags)
+{
+	char * sval;
+	const char *savepos;
+	int quoted = 0;
+	int allow_quoted = ( flags & LDAP_SCHEMA_ALLOW_QUOTED );
+	int allow_oidmacro = ( flags & LDAP_SCHEMA_ALLOW_OID_MACRO );
+
+	*len = 0;
+	/* Netscape puts the SYNTAX value in quotes (incorrectly) */
+	if ( allow_quoted && **sp == '\'' ) {
+		quoted = 1;
+		(*sp)++;
+	}
+	savepos = *sp;
+	sval = ldap_int_parse_numericoid(sp, code, 0);
+	if ( !sval ) {
+		if ( allow_oidmacro
+			&& *sp == savepos
+			&& *code == LDAP_SCHERR_NODIGIT )
+		{
+			if ( get_token(sp, &sval) != TK_BAREWORD ) {
+				if ( sval != NULL ) {
+					LDAP_FREE(sval);
+				}
+				return NULL;
+			}
+		} else {
+			return NULL;
+		}
+	}
+	if ( **sp == '{' /*}*/ ) {
+		(*sp)++;
+		*len = atoi(*sp);
+		while ( LDAP_DIGIT(**sp) )
+			(*sp)++;
+		if ( **sp != /*{*/ '}' ) {
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			LDAP_FREE(sval);
+			return NULL;
+		}
+		(*sp)++;
+	}		
+	if ( allow_quoted && quoted ) {
+		if ( **sp == '\'' ) {
+			(*sp)++;
+		} else {
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			LDAP_FREE(sval);
+			return NULL;
+		}
+	}
+	return sval;
+}
+
+/*
+ * Next routine will accept a qdstring in place of an oid if
+ * allow_quoted is set.  This is necessary to interoperate with
+ * Netscape Directory server that will improperly quote each oid (at
+ * least those of the descr kind) in the SUP clause.
+ */
+
+/* Parse a woid or a $-separated list of them enclosed in () */
+static char **
+parse_oids(const char **sp, int *code, const int allow_quoted)
+{
+	char ** res;
+	char ** res1;
+	tk_t kind;
+	char * sval;
+	int size;
+	int pos;
+
+	/*
+	 * Strictly speaking, doing this here accepts whsp before the
+	 * ( at the begining of an oidlist, but this is harmless.  Also,
+	 * we are very liberal in what we accept as an OID.  Maybe
+	 * refine later.
+	 */
+	parse_whsp(sp);
+	kind = get_token(sp,&sval);
+	if ( kind == TK_LEFTPAREN ) {
+		/* Let's presume there will be at least 2 entries */
+		size = 3;
+		res = LDAP_CALLOC(3,sizeof(char *));
+		if ( !res ) {
+			*code = LDAP_SCHERR_OUTOFMEM;
+			return NULL;
+		}
+		pos = 0;
+		parse_whsp(sp);
+		kind = get_token(sp,&sval);
+		if ( kind == TK_BAREWORD ||
+		     ( allow_quoted && kind == TK_QDSTRING ) ) {
+			res[pos++] = sval;
+			res[pos] = NULL;
+		} else if ( kind == TK_RIGHTPAREN ) {
+			/* FIXME: be liberal in what we accept... */
+			parse_whsp(sp);
+			LDAP_FREE(res);
+			return NULL;
+		} else {
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			LDAP_FREE(sval);
+			LDAP_VFREE(res);
+			return NULL;
+		}
+		parse_whsp(sp);
+		while (1) {
+			kind = get_token(sp,&sval);
+			if ( kind == TK_RIGHTPAREN )
+				break;
+			if ( kind == TK_DOLLAR ) {
+				parse_whsp(sp);
+				kind = get_token(sp,&sval);
+				if ( kind == TK_BAREWORD ||
+				     ( allow_quoted &&
+				       kind == TK_QDSTRING ) ) {
+					if ( pos == size-2 ) {
+						size++;
+						res1 = LDAP_REALLOC(res,size*sizeof(char *));
+						if ( !res1 ) {
+							LDAP_FREE(sval);
+							LDAP_VFREE(res);
+							*code = LDAP_SCHERR_OUTOFMEM;
+							return(NULL);
+						}
+						res = res1;
+					}
+					res[pos++] = sval;
+					res[pos] = NULL;
+				} else {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					LDAP_FREE(sval);
+					LDAP_VFREE(res);
+					return NULL;
+				}
+				parse_whsp(sp);
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				LDAP_FREE(sval);
+				LDAP_VFREE(res);
+				return NULL;
+			}
+		}
+		parse_whsp(sp);
+		return(res);
+	} else if ( kind == TK_BAREWORD ||
+		    ( allow_quoted && kind == TK_QDSTRING ) ) {
+		res = LDAP_CALLOC(2,sizeof(char *));
+		if ( !res ) {
+			LDAP_FREE(sval);
+			*code = LDAP_SCHERR_OUTOFMEM;
+			return NULL;
+		}
+		res[0] = sval;
+		res[1] = NULL;
+		parse_whsp(sp);
+		return res;
+	} else {
+		LDAP_FREE(sval);
+		*code = LDAP_SCHERR_BADNAME;
+		return NULL;
+	}
+}
+
+static int
+add_extension(LDAPSchemaExtensionItem ***extensions,
+	      char * name, char ** values)
+{
+	int n;
+	LDAPSchemaExtensionItem **tmp, *ext;
+
+	ext = LDAP_CALLOC(1, sizeof(LDAPSchemaExtensionItem));
+	if ( !ext )
+		return 1;
+	ext->lsei_name = name;
+	ext->lsei_values = values;
+
+	if ( !*extensions ) {
+		*extensions =
+		  LDAP_CALLOC(2, sizeof(LDAPSchemaExtensionItem *));
+		if ( !*extensions ) {
+			LDAP_FREE( ext );
+			return 1;
+		}
+		n = 0;
+	} else {
+		for ( n=0; (*extensions)[n] != NULL; n++ )
+	  		;
+		tmp = LDAP_REALLOC(*extensions,
+				   (n+2)*sizeof(LDAPSchemaExtensionItem *));
+		if ( !tmp ) {
+			LDAP_FREE( ext );
+			return 1;
+		}
+		*extensions = tmp;
+	}
+	(*extensions)[n] = ext;
+	(*extensions)[n+1] = NULL;
+	return 0;
+}
+
+static void
+free_extensions(LDAPSchemaExtensionItem **extensions)
+{
+	LDAPSchemaExtensionItem **ext;
+
+	if ( extensions ) {
+		for ( ext = extensions; *ext != NULL; ext++ ) {
+			LDAP_FREE((*ext)->lsei_name);
+			LDAP_VFREE((*ext)->lsei_values);
+			LDAP_FREE(*ext);
+		}
+		LDAP_FREE(extensions);
+	}
+}
+
+void
+ldap_syntax_free( LDAPSyntax * syn )
+{
+	if ( !syn ) return;
+	LDAP_FREE(syn->syn_oid);
+	if (syn->syn_names) LDAP_VFREE(syn->syn_names);
+	if (syn->syn_desc) LDAP_FREE(syn->syn_desc);
+	free_extensions(syn->syn_extensions);
+	LDAP_FREE(syn);
+}
+
+LDAPSyntax *
+ldap_str2syntax( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	LDAPSyntax * syn;
+	char ** ext_vals;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	syn = LDAP_CALLOC(1,sizeof(LDAPSyntax));
+
+	if ( !syn ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		LDAP_FREE(sval);
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		ldap_syntax_free(syn);
+		return NULL;
+	}
+
+	parse_whsp(&ss);
+	syn->syn_oid = ldap_int_parse_numericoid(&ss,code,0);
+	if ( !syn->syn_oid ) {
+		*errp = ss;
+		ldap_syntax_free(syn);
+		return NULL;
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal and accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_syntax_free(syn);
+			return NULL;
+		case TK_RIGHTPAREN:
+			return syn;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_syntax_free(syn);
+					return(NULL);
+				}
+				seen_name = 1;
+				syn->syn_names = parse_qdescrs(&ss,code);
+				if ( !syn->syn_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_syntax_free(syn);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_syntax_free(syn);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_syntax_free(syn);
+					return NULL;
+				}
+				syn->syn_desc = sval;
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_syntax_free(syn);
+					return NULL;
+				}
+				if ( add_extension(&syn->syn_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_syntax_free(syn);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_syntax_free(syn);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_syntax_free(syn);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_matchingrule_free( LDAPMatchingRule * mr )
+{
+	if (!mr) return;
+	LDAP_FREE(mr->mr_oid);
+	if (mr->mr_names) LDAP_VFREE(mr->mr_names);
+	if (mr->mr_desc) LDAP_FREE(mr->mr_desc);
+	if (mr->mr_syntax_oid) LDAP_FREE(mr->mr_syntax_oid);
+	free_extensions(mr->mr_extensions);
+	LDAP_FREE(mr);
+}
+
+LDAPMatchingRule *
+ldap_str2matchingrule( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_syntax = 0;
+	LDAPMatchingRule * mr;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	mr = LDAP_CALLOC(1,sizeof(LDAPMatchingRule));
+
+	if ( !mr ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_matchingrule_free(mr);
+		return NULL;
+	}
+
+	parse_whsp(&ss);
+	savepos = ss;
+	mr->mr_oid = ldap_int_parse_numericoid(&ss,code,flags);
+	if ( !mr->mr_oid ) {
+		if ( flags & LDAP_SCHEMA_ALLOW_NO_OID ) {
+			/* Backtracking */
+			ss = savepos;
+			kind = get_token(&ss,&sval);
+			if ( kind == TK_BAREWORD ) {
+				if ( !strcasecmp(sval, "NAME") ||
+				     !strcasecmp(sval, "DESC") ||
+				     !strcasecmp(sval, "OBSOLETE") ||
+				     !strcasecmp(sval, "SYNTAX") ||
+				     !strncasecmp(sval, "X-", 2) ) {
+					/* Missing OID, backtrack */
+					ss = savepos;
+				} else {
+					/* Non-numerical OID, ignore */
+				}
+			}
+			LDAP_FREE(sval);
+		} else {
+			*errp = ss;
+			ldap_matchingrule_free(mr);
+			return NULL;
+		}
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal and accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_matchingrule_free(mr);
+			return NULL;
+		case TK_RIGHTPAREN:
+			if( !seen_syntax ) {
+				*code = LDAP_SCHERR_MISSING;
+				ldap_matchingrule_free(mr);
+				return NULL;
+			}
+			return mr;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return(NULL);
+				}
+				seen_name = 1;
+				mr->mr_names = parse_qdescrs(&ss,code);
+				if ( !mr->mr_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_matchingrule_free(mr);
+					return NULL;
+				}
+				mr->mr_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				mr->mr_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"SYNTAX") ) {
+				LDAP_FREE(sval);
+				if ( seen_syntax ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return(NULL);
+				}
+				seen_syntax = 1;
+				parse_whsp(&ss);
+				mr->mr_syntax_oid =
+					ldap_int_parse_numericoid(&ss,code,flags);
+				if ( !mr->mr_syntax_oid ) {
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_matchingrule_free(mr);
+					return NULL;
+				}
+				if ( add_extension(&mr->mr_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_matchingrule_free(mr);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_matchingrule_free(mr);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_matchingrule_free(mr);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_matchingruleuse_free( LDAPMatchingRuleUse * mru )
+{
+	if (!mru) return;
+	LDAP_FREE(mru->mru_oid);
+	if (mru->mru_names) LDAP_VFREE(mru->mru_names);
+	if (mru->mru_desc) LDAP_FREE(mru->mru_desc);
+	if (mru->mru_applies_oids) LDAP_VFREE(mru->mru_applies_oids);
+	free_extensions(mru->mru_extensions);
+	LDAP_FREE(mru);
+}
+
+LDAPMatchingRuleUse *
+ldap_str2matchingruleuse( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_applies = 0;
+	LDAPMatchingRuleUse * mru;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	mru = LDAP_CALLOC(1,sizeof(LDAPMatchingRuleUse));
+
+	if ( !mru ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_matchingruleuse_free(mru);
+		return NULL;
+	}
+
+	parse_whsp(&ss);
+	savepos = ss;
+	mru->mru_oid = ldap_int_parse_numericoid(&ss,code,flags);
+	if ( !mru->mru_oid ) {
+		if ( flags & LDAP_SCHEMA_ALLOW_NO_OID ) {
+			/* Backtracking */
+			ss = savepos;
+			kind = get_token(&ss,&sval);
+			if ( kind == TK_BAREWORD ) {
+				if ( !strcasecmp(sval, "NAME") ||
+				     !strcasecmp(sval, "DESC") ||
+				     !strcasecmp(sval, "OBSOLETE") ||
+				     !strcasecmp(sval, "APPLIES") ||
+				     !strncasecmp(sval, "X-", 2) ) {
+					/* Missing OID, backtrack */
+					ss = savepos;
+				} else {
+					/* Non-numerical OID, ignore */
+				}
+			}
+			LDAP_FREE(sval);
+		} else {
+			*errp = ss;
+			ldap_matchingruleuse_free(mru);
+			return NULL;
+		}
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal and accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_matchingruleuse_free(mru);
+			return NULL;
+		case TK_RIGHTPAREN:
+			if( !seen_applies ) {
+				*code = LDAP_SCHERR_MISSING;
+				ldap_matchingruleuse_free(mru);
+				return NULL;
+			}
+			return mru;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return(NULL);
+				}
+				seen_name = 1;
+				mru->mru_names = parse_qdescrs(&ss,code);
+				if ( !mru->mru_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_matchingruleuse_free(mru);
+					return NULL;
+				}
+				mru->mru_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				mru->mru_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"APPLIES") ) {
+				LDAP_FREE(sval);
+				if ( seen_applies ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return(NULL);
+				}
+				seen_applies = 1;
+				mru->mru_applies_oids = parse_oids(&ss,
+							     code,
+							     flags);
+				if ( !mru->mru_applies_oids && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return NULL;
+				}
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_matchingruleuse_free(mru);
+					return NULL;
+				}
+				if ( add_extension(&mru->mru_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_matchingruleuse_free(mru);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_matchingruleuse_free(mru);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_matchingruleuse_free(mru);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_attributetype_free(LDAPAttributeType * at)
+{
+	if (!at) return;
+	LDAP_FREE(at->at_oid);
+	if (at->at_names) LDAP_VFREE(at->at_names);
+	if (at->at_desc) LDAP_FREE(at->at_desc);
+	if (at->at_sup_oid) LDAP_FREE(at->at_sup_oid);
+	if (at->at_equality_oid) LDAP_FREE(at->at_equality_oid);
+	if (at->at_ordering_oid) LDAP_FREE(at->at_ordering_oid);
+	if (at->at_substr_oid) LDAP_FREE(at->at_substr_oid);
+	if (at->at_syntax_oid) LDAP_FREE(at->at_syntax_oid);
+	free_extensions(at->at_extensions);
+	LDAP_FREE(at);
+}
+
+LDAPAttributeType *
+ldap_str2attributetype( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_sup = 0;
+	int seen_equality = 0;
+	int seen_ordering = 0;
+	int seen_substr = 0;
+	int seen_syntax = 0;
+	int seen_usage = 0;
+	LDAPAttributeType * at;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	at = LDAP_CALLOC(1,sizeof(LDAPAttributeType));
+
+	if ( !at ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_attributetype_free(at);
+		return NULL;
+	}
+
+	/*
+	 * Definitions MUST begin with an OID in the numericoid format.
+	 * However, this routine is used by clients to parse the response
+	 * from servers and very well known servers will provide an OID
+	 * in the wrong format or even no OID at all.  We do our best to
+	 * extract info from those servers.
+	 */
+	parse_whsp(&ss);
+	savepos = ss;
+	at->at_oid = ldap_int_parse_numericoid(&ss,code,0);
+	if ( !at->at_oid ) {
+		if ( ( flags & ( LDAP_SCHEMA_ALLOW_NO_OID
+				| LDAP_SCHEMA_ALLOW_OID_MACRO ) )
+			    && (ss == savepos) )
+		{
+			/* Backtracking */
+			ss = savepos;
+			kind = get_token(&ss,&sval);
+			if ( kind == TK_BAREWORD ) {
+				if ( !strcasecmp(sval, "NAME") ||
+				     !strcasecmp(sval, "DESC") ||
+				     !strcasecmp(sval, "OBSOLETE") ||
+				     !strcasecmp(sval, "SUP") ||
+				     !strcasecmp(sval, "EQUALITY") ||
+				     !strcasecmp(sval, "ORDERING") ||
+				     !strcasecmp(sval, "SUBSTR") ||
+				     !strcasecmp(sval, "SYNTAX") ||
+				     !strcasecmp(sval, "SINGLE-VALUE") ||
+				     !strcasecmp(sval, "COLLECTIVE") ||
+				     !strcasecmp(sval, "NO-USER-MODIFICATION") ||
+				     !strcasecmp(sval, "USAGE") ||
+				     !strncasecmp(sval, "X-", 2) )
+				{
+					/* Missing OID, backtrack */
+					ss = savepos;
+				} else if ( flags
+					& LDAP_SCHEMA_ALLOW_OID_MACRO)
+				{
+					/* Non-numerical OID ... */
+					int len = ss-savepos;
+					at->at_oid = LDAP_MALLOC(len+1);
+					strncpy(at->at_oid, savepos, len);
+					at->at_oid[len] = 0;
+				}
+			}
+			LDAP_FREE(sval);
+		} else {
+			*errp = ss;
+			ldap_attributetype_free(at);
+			return NULL;
+		}
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal and accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_attributetype_free(at);
+			return NULL;
+		case TK_RIGHTPAREN:
+			return at;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_name = 1;
+				at->at_names = parse_qdescrs(&ss,code);
+				if ( !at->at_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+				at->at_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				at->at_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"SUP") ) {
+				LDAP_FREE(sval);
+				if ( seen_sup ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_sup = 1;
+				at->at_sup_oid = parse_woid(&ss,code);
+				if ( !at->at_sup_oid ) {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"EQUALITY") ) {
+				LDAP_FREE(sval);
+				if ( seen_equality ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_equality = 1;
+				at->at_equality_oid = parse_woid(&ss,code);
+				if ( !at->at_equality_oid ) {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"ORDERING") ) {
+				LDAP_FREE(sval);
+				if ( seen_ordering ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_ordering = 1;
+				at->at_ordering_oid = parse_woid(&ss,code);
+				if ( !at->at_ordering_oid ) {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"SUBSTR") ) {
+				LDAP_FREE(sval);
+				if ( seen_substr ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_substr = 1;
+				at->at_substr_oid = parse_woid(&ss,code);
+				if ( !at->at_substr_oid ) {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"SYNTAX") ) {
+				LDAP_FREE(sval);
+				if ( seen_syntax ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_syntax = 1;
+				parse_whsp(&ss);
+				savepos = ss;
+				at->at_syntax_oid =
+					parse_noidlen(&ss,
+						      code,
+						      &at->at_syntax_len,
+						      flags);
+				if ( !at->at_syntax_oid ) {
+				    if ( flags & LDAP_SCHEMA_ALLOW_OID_MACRO ) {
+					kind = get_token(&ss,&sval);
+					if (kind == TK_BAREWORD)
+					{
+					    char *sp = strchr(sval, '{');
+					    at->at_syntax_oid = sval;
+					    if (sp)
+					    {
+						*sp++ = 0;
+					    	at->at_syntax_len = atoi(sp);
+						while ( LDAP_DIGIT(*sp) )
+							sp++;
+						if ( *sp != '}' ) {
+						    *code = LDAP_SCHERR_UNEXPTOKEN;
+						    *errp = ss;
+						    ldap_attributetype_free(at);
+						    return NULL;
+						}
+					    }
+					}
+				    } else {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				    }
+				}
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"SINGLE-VALUE") ) {
+				LDAP_FREE(sval);
+				if ( at->at_single_value ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				at->at_single_value = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"COLLECTIVE") ) {
+				LDAP_FREE(sval);
+				if ( at->at_collective ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				at->at_collective = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"NO-USER-MODIFICATION") ) {
+				LDAP_FREE(sval);
+				if ( at->at_no_user_mod ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				at->at_no_user_mod = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"USAGE") ) {
+				LDAP_FREE(sval);
+				if ( seen_usage ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return(NULL);
+				}
+				seen_usage = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_BAREWORD ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+				if ( !strcasecmp(sval,"userApplications") )
+					at->at_usage =
+					    LDAP_SCHEMA_USER_APPLICATIONS;
+				else if ( !strcasecmp(sval,"directoryOperation") )
+					at->at_usage =
+					    LDAP_SCHEMA_DIRECTORY_OPERATION;
+				else if ( !strcasecmp(sval,"distributedOperation") )
+					at->at_usage =
+					    LDAP_SCHEMA_DISTRIBUTED_OPERATION;
+				else if ( !strcasecmp(sval,"dSAOperation") )
+					at->at_usage =
+					    LDAP_SCHEMA_DSA_OPERATION;
+				else {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+				LDAP_FREE(sval);
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+				if ( add_extension(&at->at_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_attributetype_free(at);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_attributetype_free(at);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_attributetype_free(at);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_objectclass_free(LDAPObjectClass * oc)
+{
+	if (!oc) return;
+	LDAP_FREE(oc->oc_oid);
+	if (oc->oc_names) LDAP_VFREE(oc->oc_names);
+	if (oc->oc_desc) LDAP_FREE(oc->oc_desc);
+	if (oc->oc_sup_oids) LDAP_VFREE(oc->oc_sup_oids);
+	if (oc->oc_at_oids_must) LDAP_VFREE(oc->oc_at_oids_must);
+	if (oc->oc_at_oids_may) LDAP_VFREE(oc->oc_at_oids_may);
+	free_extensions(oc->oc_extensions);
+	LDAP_FREE(oc);
+}
+
+LDAPObjectClass *
+ldap_str2objectclass( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_sup = 0;
+	int seen_kind = 0;
+	int seen_must = 0;
+	int seen_may = 0;
+	LDAPObjectClass * oc;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	oc = LDAP_CALLOC(1,sizeof(LDAPObjectClass));
+
+	if ( !oc ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+	oc->oc_kind = LDAP_SCHEMA_STRUCTURAL;
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_objectclass_free(oc);
+		return NULL;
+	}
+
+	/*
+	 * Definitions MUST begin with an OID in the numericoid format.
+	 * However, this routine is used by clients to parse the response
+	 * from servers and very well known servers will provide an OID
+	 * in the wrong format or even no OID at all.  We do our best to
+	 * extract info from those servers.
+	 */
+	parse_whsp(&ss);
+	savepos = ss;
+	oc->oc_oid = ldap_int_parse_numericoid(&ss,code,0);
+	if ( !oc->oc_oid ) {
+		if ( (flags & LDAP_SCHEMA_ALLOW_ALL) && (ss == savepos) ) {
+			/* Backtracking */
+			ss = savepos;
+			kind = get_token(&ss,&sval);
+			if ( kind == TK_BAREWORD ) {
+				if ( !strcasecmp(sval, "NAME") ||
+				     !strcasecmp(sval, "DESC") ||
+				     !strcasecmp(sval, "OBSOLETE") ||
+				     !strcasecmp(sval, "SUP") ||
+				     !strcasecmp(sval, "ABSTRACT") ||
+				     !strcasecmp(sval, "STRUCTURAL") ||
+				     !strcasecmp(sval, "AUXILIARY") ||
+				     !strcasecmp(sval, "MUST") ||
+				     !strcasecmp(sval, "MAY") ||
+				     !strncasecmp(sval, "X-", 2) ) {
+					/* Missing OID, backtrack */
+					ss = savepos;
+				} else if ( flags &
+					LDAP_SCHEMA_ALLOW_OID_MACRO ) {
+					/* Non-numerical OID, ignore */
+					int len = ss-savepos;
+					oc->oc_oid = LDAP_MALLOC(len+1);
+					strncpy(oc->oc_oid, savepos, len);
+					oc->oc_oid[len] = 0;
+				}
+			}
+			LDAP_FREE(sval);
+			*code = 0;
+		} else {
+			*errp = ss;
+			ldap_objectclass_free(oc);
+			return NULL;
+		}
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal an accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_objectclass_free(oc);
+			return NULL;
+		case TK_RIGHTPAREN:
+			return oc;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_name = 1;
+				oc->oc_names = parse_qdescrs(&ss,code);
+				if ( !oc->oc_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+				oc->oc_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				oc->oc_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"SUP") ) {
+				LDAP_FREE(sval);
+				if ( seen_sup ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_sup = 1;
+				oc->oc_sup_oids = parse_oids(&ss,
+							     code,
+							     flags);
+				if ( !oc->oc_sup_oids && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+				*code = 0;
+			} else if ( !strcasecmp(sval,"ABSTRACT") ) {
+				LDAP_FREE(sval);
+				if ( seen_kind ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_kind = 1;
+				oc->oc_kind = LDAP_SCHEMA_ABSTRACT;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"STRUCTURAL") ) {
+				LDAP_FREE(sval);
+				if ( seen_kind ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_kind = 1;
+				oc->oc_kind = LDAP_SCHEMA_STRUCTURAL;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"AUXILIARY") ) {
+				LDAP_FREE(sval);
+				if ( seen_kind ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_kind = 1;
+				oc->oc_kind = LDAP_SCHEMA_AUXILIARY;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"MUST") ) {
+				LDAP_FREE(sval);
+				if ( seen_must ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_must = 1;
+				oc->oc_at_oids_must = parse_oids(&ss,code,0);
+				if ( !oc->oc_at_oids_must && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+				*code = 0;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"MAY") ) {
+				LDAP_FREE(sval);
+				if ( seen_may ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return(NULL);
+				}
+				seen_may = 1;
+				oc->oc_at_oids_may = parse_oids(&ss,code,0);
+				if ( !oc->oc_at_oids_may && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+				*code = 0;
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				*code = 0;
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+				if ( add_extension(&oc->oc_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_objectclass_free(oc);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_objectclass_free(oc);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_objectclass_free(oc);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_contentrule_free(LDAPContentRule * cr)
+{
+	if (!cr) return;
+	LDAP_FREE(cr->cr_oid);
+	if (cr->cr_names) LDAP_VFREE(cr->cr_names);
+	if (cr->cr_desc) LDAP_FREE(cr->cr_desc);
+	if (cr->cr_oc_oids_aux) LDAP_VFREE(cr->cr_oc_oids_aux);
+	if (cr->cr_at_oids_must) LDAP_VFREE(cr->cr_at_oids_must);
+	if (cr->cr_at_oids_may) LDAP_VFREE(cr->cr_at_oids_may);
+	if (cr->cr_at_oids_not) LDAP_VFREE(cr->cr_at_oids_not);
+	free_extensions(cr->cr_extensions);
+	LDAP_FREE(cr);
+}
+
+LDAPContentRule *
+ldap_str2contentrule( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_aux = 0;
+	int seen_must = 0;
+	int seen_may = 0;
+	int seen_not = 0;
+	LDAPContentRule * cr;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	cr = LDAP_CALLOC(1,sizeof(LDAPContentRule));
+
+	if ( !cr ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_contentrule_free(cr);
+		return NULL;
+	}
+
+	/*
+	 * Definitions MUST begin with an OID in the numericoid format.
+	 */
+	parse_whsp(&ss);
+	savepos = ss;
+	cr->cr_oid = ldap_int_parse_numericoid(&ss,code,0);
+	if ( !cr->cr_oid ) {
+		if ( (flags & LDAP_SCHEMA_ALLOW_ALL) && (ss == savepos) ) {
+			/* Backtracking */
+			ss = savepos;
+			kind = get_token(&ss,&sval);
+			if ( kind == TK_BAREWORD ) {
+				if ( !strcasecmp(sval, "NAME") ||
+				     !strcasecmp(sval, "DESC") ||
+				     !strcasecmp(sval, "OBSOLETE") ||
+				     !strcasecmp(sval, "AUX") ||
+				     !strcasecmp(sval, "MUST") ||
+				     !strcasecmp(sval, "MAY") ||
+				     !strcasecmp(sval, "NOT") ||
+				     !strncasecmp(sval, "X-", 2) ) {
+					/* Missing OID, backtrack */
+					ss = savepos;
+				} else if ( flags &
+					LDAP_SCHEMA_ALLOW_OID_MACRO ) {
+					/* Non-numerical OID, ignore */
+					int len = ss-savepos;
+					cr->cr_oid = LDAP_MALLOC(len+1);
+					strncpy(cr->cr_oid, savepos, len);
+					cr->cr_oid[len] = 0;
+				}
+			}
+			LDAP_FREE(sval);
+		} else {
+			*errp = ss;
+			ldap_contentrule_free(cr);
+			return NULL;
+		}
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal an accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_contentrule_free(cr);
+			return NULL;
+		case TK_RIGHTPAREN:
+			return cr;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_name = 1;
+				cr->cr_names = parse_qdescrs(&ss,code);
+				if ( !cr->cr_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				cr->cr_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				cr->cr_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"AUX") ) {
+				LDAP_FREE(sval);
+				if ( seen_aux ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_aux = 1;
+				cr->cr_oc_oids_aux = parse_oids(&ss,code,0);
+				if ( !cr->cr_oc_oids_aux ) {
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"MUST") ) {
+				LDAP_FREE(sval);
+				if ( seen_must ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_must = 1;
+				cr->cr_at_oids_must = parse_oids(&ss,code,0);
+				if ( !cr->cr_at_oids_must && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"MAY") ) {
+				LDAP_FREE(sval);
+				if ( seen_may ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_may = 1;
+				cr->cr_at_oids_may = parse_oids(&ss,code,0);
+				if ( !cr->cr_at_oids_may && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"NOT") ) {
+				LDAP_FREE(sval);
+				if ( seen_not ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return(NULL);
+				}
+				seen_not = 1;
+				cr->cr_at_oids_not = parse_oids(&ss,code,0);
+				if ( !cr->cr_at_oids_not && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+				if ( add_extension(&cr->cr_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_contentrule_free(cr);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_contentrule_free(cr);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_contentrule_free(cr);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_structurerule_free(LDAPStructureRule * sr)
+{
+	if (!sr) return;
+	if (sr->sr_names) LDAP_VFREE(sr->sr_names);
+	if (sr->sr_desc) LDAP_FREE(sr->sr_desc);
+	if (sr->sr_nameform) LDAP_FREE(sr->sr_nameform);
+	if (sr->sr_sup_ruleids) LDAP_FREE(sr->sr_sup_ruleids);
+	free_extensions(sr->sr_extensions);
+	LDAP_FREE(sr);
+}
+
+LDAPStructureRule *
+ldap_str2structurerule( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	int ret;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_nameform = 0;
+	LDAPStructureRule * sr;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	sr = LDAP_CALLOC(1,sizeof(LDAPStructureRule));
+
+	if ( !sr ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_structurerule_free(sr);
+		return NULL;
+	}
+
+	/*
+	 * Definitions MUST begin with a ruleid.
+	 */
+	parse_whsp(&ss);
+	savepos = ss;
+	ret = ldap_int_parse_ruleid(&ss,code,0,&sr->sr_ruleid);
+	if ( ret ) {
+		*errp = ss;
+		ldap_structurerule_free(sr);
+		return NULL;
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal an accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_structurerule_free(sr);
+			return NULL;
+		case TK_RIGHTPAREN:
+			if( !seen_nameform ) {
+				*code = LDAP_SCHERR_MISSING;
+				ldap_structurerule_free(sr);
+				return NULL;
+			}
+			return sr;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return(NULL);
+				}
+				seen_name = 1;
+				sr->sr_names = parse_qdescrs(&ss,code);
+				if ( !sr->sr_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_structurerule_free(sr);
+					return NULL;
+				}
+				sr->sr_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				sr->sr_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"FORM") ) {
+				LDAP_FREE(sval);
+				if ( seen_nameform ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return(NULL);
+				}
+				seen_nameform = 1;
+				sr->sr_nameform = parse_woid(&ss,code);
+				if ( !sr->sr_nameform ) {
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_structurerule_free(sr);
+					return NULL;
+				}
+				if ( add_extension(&sr->sr_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_structurerule_free(sr);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_structurerule_free(sr);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_structurerule_free(sr);
+			return NULL;
+		}
+	}
+}
+
+void
+ldap_nameform_free(LDAPNameForm * nf)
+{
+	if (!nf) return;
+	LDAP_FREE(nf->nf_oid);
+	if (nf->nf_names) LDAP_VFREE(nf->nf_names);
+	if (nf->nf_desc) LDAP_FREE(nf->nf_desc);
+	if (nf->nf_objectclass) LDAP_FREE(nf->nf_objectclass);
+	if (nf->nf_at_oids_must) LDAP_VFREE(nf->nf_at_oids_must);
+	if (nf->nf_at_oids_may) LDAP_VFREE(nf->nf_at_oids_may);
+	free_extensions(nf->nf_extensions);
+	LDAP_FREE(nf);
+}
+
+LDAPNameForm *
+ldap_str2nameform( LDAP_CONST char * s,
+	int * code,
+	LDAP_CONST char ** errp,
+	LDAP_CONST unsigned flags )
+{
+	tk_t kind;
+	const char * ss = s;
+	char * sval;
+	int seen_name = 0;
+	int seen_desc = 0;
+	int seen_obsolete = 0;
+	int seen_class = 0;
+	int seen_must = 0;
+	int seen_may = 0;
+	LDAPNameForm * nf;
+	char ** ext_vals;
+	const char * savepos;
+
+	if ( !s ) {
+		*code = LDAP_SCHERR_EMPTY;
+		*errp = "";
+		return NULL;
+	}
+
+	*errp = s;
+	nf = LDAP_CALLOC(1,sizeof(LDAPNameForm));
+
+	if ( !nf ) {
+		*code = LDAP_SCHERR_OUTOFMEM;
+		return NULL;
+	}
+
+	kind = get_token(&ss,&sval);
+	if ( kind != TK_LEFTPAREN ) {
+		*code = LDAP_SCHERR_NOLEFTPAREN;
+		LDAP_FREE(sval);
+		ldap_nameform_free(nf);
+		return NULL;
+	}
+
+	/*
+	 * Definitions MUST begin with an OID in the numericoid format.
+	 * However, this routine is used by clients to parse the response
+	 * from servers and very well known servers will provide an OID
+	 * in the wrong format or even no OID at all.  We do our best to
+	 * extract info from those servers.
+	 */
+	parse_whsp(&ss);
+	savepos = ss;
+	nf->nf_oid = ldap_int_parse_numericoid(&ss,code,0);
+	if ( !nf->nf_oid ) {
+		*errp = ss;
+		ldap_nameform_free(nf);
+		return NULL;
+	}
+	parse_whsp(&ss);
+
+	/*
+	 * Beyond this point we will be liberal an accept the items
+	 * in any order.
+	 */
+	while (1) {
+		kind = get_token(&ss,&sval);
+		switch (kind) {
+		case TK_EOS:
+			*code = LDAP_SCHERR_NORIGHTPAREN;
+			*errp = EndOfInput;
+			ldap_nameform_free(nf);
+			return NULL;
+		case TK_RIGHTPAREN:
+			if( !seen_class || !seen_must ) {
+				*code = LDAP_SCHERR_MISSING;
+				ldap_nameform_free(nf);
+				return NULL;
+			}
+			return nf;
+		case TK_BAREWORD:
+			if ( !strcasecmp(sval,"NAME") ) {
+				LDAP_FREE(sval);
+				if ( seen_name ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_name = 1;
+				nf->nf_names = parse_qdescrs(&ss,code);
+				if ( !nf->nf_names ) {
+					if ( *code != LDAP_SCHERR_OUTOFMEM )
+						*code = LDAP_SCHERR_BADNAME;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"DESC") ) {
+				LDAP_FREE(sval);
+				if ( seen_desc ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_desc = 1;
+				parse_whsp(&ss);
+				kind = get_token(&ss,&sval);
+				if ( kind != TK_QDSTRING ) {
+					*code = LDAP_SCHERR_UNEXPTOKEN;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+				nf->nf_desc = sval;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OBSOLETE") ) {
+				LDAP_FREE(sval);
+				if ( seen_obsolete ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_obsolete = 1;
+				nf->nf_obsolete = LDAP_SCHEMA_YES;
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"OC") ) {
+				LDAP_FREE(sval);
+				if ( seen_class ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_class = 1;
+				nf->nf_objectclass = parse_woid(&ss,code);
+				if ( !nf->nf_objectclass ) {
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+			} else if ( !strcasecmp(sval,"MUST") ) {
+				LDAP_FREE(sval);
+				if ( seen_must ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_must = 1;
+				nf->nf_at_oids_must = parse_oids(&ss,code,0);
+				if ( !nf->nf_at_oids_must && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( !strcasecmp(sval,"MAY") ) {
+				LDAP_FREE(sval);
+				if ( seen_may ) {
+					*code = LDAP_SCHERR_DUPOPT;
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return(NULL);
+				}
+				seen_may = 1;
+				nf->nf_at_oids_may = parse_oids(&ss,code,0);
+				if ( !nf->nf_at_oids_may && *code != LDAP_SUCCESS ) {
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+				parse_whsp(&ss);
+			} else if ( sval[0] == 'X' && sval[1] == '-' ) {
+				/* Should be parse_qdstrings */
+				ext_vals = parse_qdescrs(&ss, code);
+				if ( !ext_vals ) {
+					*errp = ss;
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+				if ( add_extension(&nf->nf_extensions,
+						    sval, ext_vals) ) {
+					*code = LDAP_SCHERR_OUTOFMEM;
+					*errp = ss;
+					LDAP_FREE(sval);
+					ldap_nameform_free(nf);
+					return NULL;
+				}
+			} else {
+				*code = LDAP_SCHERR_UNEXPTOKEN;
+				*errp = ss;
+				LDAP_FREE(sval);
+				ldap_nameform_free(nf);
+				return NULL;
+			}
+			break;
+		default:
+			*code = LDAP_SCHERR_UNEXPTOKEN;
+			*errp = ss;
+			LDAP_FREE(sval);
+			ldap_nameform_free(nf);
+			return NULL;
+		}
+	}
+}
+
+static char *const err2text[] = {
+	N_("Success"),
+	N_("Out of memory"),
+	N_("Unexpected token"),
+	N_("Missing opening parenthesis"),
+	N_("Missing closing parenthesis"),
+	N_("Expecting digit"),
+	N_("Expecting a name"),
+	N_("Bad description"),
+	N_("Bad superiors"),
+	N_("Duplicate option"),
+	N_("Unexpected end of data"),
+	N_("Missing required field"),
+	N_("Out of order field")
+};
+
+char *
+ldap_scherr2str(int code)
+{
+	if ( code < 0 || code >= (int)(sizeof(err2text)/sizeof(char *)) ) {
+		return _("Unknown error");
+	} else {
+		return _(err2text[code]);
+	}
+}