Adding upstream version 2.4.47+dfsg.upstream/2.4.47+dfsgupstream

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

1 files changed, 545 insertions, 0 deletions

diff --git a/servers/slapd/root_dse.c b/servers/slapd/root_dse.c
new file mode 100644
index 0000000..13117bd
--- /dev/null
+++ b/servers/slapd/root_dse.c
@@ -0,0 +1,545 @@
+/* root_dse.c - Provides the Root DSA-Specific Entry */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2018 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/string.h>
+
+#include "slap.h"
+#include <ldif.h>
+#include "lber_pvt.h"
+
+#ifdef LDAP_SLAPI
+#include "slapi/slapi.h"
+#endif
+
+static struct berval	builtin_supportedFeatures[] = {
+	BER_BVC(LDAP_FEATURE_MODIFY_INCREMENT),		/* Modify/increment */
+	BER_BVC(LDAP_FEATURE_ALL_OP_ATTRS),		/* All Op Attrs (+) */
+	BER_BVC(LDAP_FEATURE_OBJECTCLASS_ATTRS),	/* OCs in Attrs List (@class) */
+	BER_BVC(LDAP_FEATURE_ABSOLUTE_FILTERS),		/* (&) and (|) search filters */
+	BER_BVC(LDAP_FEATURE_LANGUAGE_TAG_OPTIONS),	/* Language Tag Options */
+	BER_BVC(LDAP_FEATURE_LANGUAGE_RANGE_OPTIONS),	/* Language Range Options */
+#ifdef LDAP_DEVEL
+	BER_BVC(LDAP_FEATURE_SUBORDINATE_SCOPE),	/* "children" search scope */
+#endif
+	BER_BVNULL
+};
+static struct berval	*supportedFeatures;
+
+static Entry	*usr_attr = NULL;
+
+/*
+ * allow modules to register functions that muck with the root DSE entry
+ */
+
+typedef struct entry_info_t {
+	SLAP_ENTRY_INFO_FN	func;
+	void			*arg;
+	struct entry_info_t	*next;
+} entry_info_t;
+
+static entry_info_t *extra_info;
+
+int
+entry_info_register( SLAP_ENTRY_INFO_FN func, void *arg )
+{
+	entry_info_t	*ei = ch_calloc( 1, sizeof( entry_info_t ) );
+
+	ei->func = func;
+	ei->arg = arg;
+
+	ei->next = extra_info;
+	extra_info = ei;
+
+	return 0;
+}
+
+int
+entry_info_unregister( SLAP_ENTRY_INFO_FN func, void *arg )
+{
+	entry_info_t	**eip;
+
+	for ( eip = &extra_info; *eip != NULL; eip = &(*eip)->next ) {
+		if ( (*eip)->func == func && (*eip)->arg == arg ) {
+			entry_info_t	*ei = *eip;
+
+			*eip = ei->next;
+
+			ch_free( ei );
+
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+void
+entry_info_destroy( void )
+{
+	entry_info_t	**eip;
+
+	for ( eip = &extra_info; *eip != NULL;  ) {
+		entry_info_t	*ei = *eip;
+
+		eip = &(*eip)->next;
+
+		ch_free( ei );
+	}
+}
+
+/*
+ * Allow modules to register supported features
+ */
+
+static int
+supported_feature_init( void )
+{
+	int		i;
+
+	if ( supportedFeatures != NULL ) {
+		return 0;
+	}
+
+	for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ )
+		;
+
+	supportedFeatures = ch_calloc( sizeof( struct berval ), i + 1 );
+	if ( supportedFeatures == NULL ) {
+		return -1;
+	}
+
+	for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ ) {
+		ber_dupbv( &supportedFeatures[ i ], &builtin_supportedFeatures[ i ] );
+	}
+	BER_BVZERO( &supportedFeatures[ i ] );
+
+	return 0;
+}
+
+int
+supported_feature_destroy( void )
+{
+	int		i;
+
+	if ( supportedFeatures == NULL ) {
+		return 0;
+	}
+	
+	for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ ) {
+		ch_free( supportedFeatures[ i ].bv_val );
+	}
+
+	ch_free( supportedFeatures );
+	supportedFeatures = NULL;
+
+	return 0;
+}
+
+int
+supported_feature_load( struct berval *f )
+{
+	struct berval	*tmp;
+	int		i;
+
+	supported_feature_init();
+
+	for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ )
+		;
+
+	tmp = ch_realloc( supportedFeatures, sizeof( struct berval ) * ( i + 2 ) );
+	if ( tmp == NULL ) {
+		return -1;
+	}
+	supportedFeatures = tmp;
+
+	ber_dupbv( &supportedFeatures[ i ], f );
+	BER_BVZERO( &supportedFeatures[ i + 1 ] );
+
+	return 0;
+}
+
+int
+root_dse_info(
+	Connection *conn,
+	Entry **entry,
+	const char **text )
+{
+	Entry		*e;
+	struct berval val;
+#ifdef LDAP_SLAPI
+	struct berval *bv;
+#endif
+	int		i, j;
+	char ** supportedSASLMechanisms;
+	BackendDB *be;
+
+	AttributeDescription *ad_structuralObjectClass
+		= slap_schema.si_ad_structuralObjectClass;
+	AttributeDescription *ad_objectClass
+		= slap_schema.si_ad_objectClass;
+	AttributeDescription *ad_namingContexts
+		= slap_schema.si_ad_namingContexts;
+#ifdef LDAP_SLAPI
+	AttributeDescription *ad_supportedExtension
+		= slap_schema.si_ad_supportedExtension;
+#endif
+	AttributeDescription *ad_supportedLDAPVersion
+		= slap_schema.si_ad_supportedLDAPVersion;
+	AttributeDescription *ad_supportedSASLMechanisms
+		= slap_schema.si_ad_supportedSASLMechanisms;
+	AttributeDescription *ad_supportedFeatures
+		= slap_schema.si_ad_supportedFeatures;
+	AttributeDescription *ad_monitorContext
+		= slap_schema.si_ad_monitorContext;
+	AttributeDescription *ad_configContext
+		= slap_schema.si_ad_configContext;
+	AttributeDescription *ad_ref
+		= slap_schema.si_ad_ref;
+
+	e = entry_alloc();
+	if( e == NULL ) {
+		Debug( LDAP_DEBUG_ANY,
+			"root_dse_info: entry_alloc failed", 0, 0, 0 );
+		return LDAP_OTHER;
+	}
+
+	e->e_attrs = NULL;
+	e->e_name.bv_val = ch_strdup( LDAP_ROOT_DSE );
+	e->e_name.bv_len = sizeof( LDAP_ROOT_DSE )-1;
+	e->e_nname.bv_val = ch_strdup( LDAP_ROOT_DSE );
+	e->e_nname.bv_len = sizeof( LDAP_ROOT_DSE )-1;
+
+	/* the DN is an empty string so no pretty/normalization is needed */
+	assert( !e->e_name.bv_len );
+	assert( !e->e_nname.bv_len );
+
+	e->e_private = NULL;
+
+	/* FIXME: is this really needed? */
+	BER_BVSTR( &val, "top" );
+	if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) {
+fail:
+		entry_free( e );
+		return LDAP_OTHER;
+	}
+
+	BER_BVSTR( &val, "OpenLDAProotDSE" );
+	if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) {
+		goto fail;
+	}
+	if( attr_merge_one( e, ad_structuralObjectClass, &val, NULL ) ) {
+		goto fail;
+	}
+
+	LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
+		if ( be->be_suffix == NULL
+				|| be->be_nsuffix == NULL ) {
+			/* no suffix! */
+			continue;
+		}
+		if ( SLAP_DBHIDDEN( be )) {
+			continue;
+		}
+		if ( SLAP_MONITOR( be )) {
+			if( attr_merge_one( e, ad_monitorContext,
+					&be->be_suffix[0],
+					&be->be_nsuffix[0] ) )
+			{
+				goto fail;
+			}
+			continue;
+		}
+		if ( SLAP_CONFIG( be )) {
+			if( attr_merge_one( e, ad_configContext,
+					&be->be_suffix[0],
+					& be->be_nsuffix[0] ) )
+			{
+				goto fail;
+			}
+			continue;
+		}
+		if ( SLAP_GLUE_SUBORDINATE( be ) && !SLAP_GLUE_ADVERTISE( be ) ) {
+			continue;
+		}
+		for ( j = 0; be->be_suffix[j].bv_val != NULL; j++ ) {
+			if( attr_merge_one( e, ad_namingContexts,
+					&be->be_suffix[j], NULL ) )
+			{
+				goto fail;
+			}
+		}
+	}
+
+	/* altServer unsupported */
+
+	/* supportedControl */
+	if ( controls_root_dse_info( e ) != 0 ) {
+		goto fail;
+	}
+
+	/* supportedExtension */
+	if ( exop_root_dse_info( e ) != 0 ) {
+		goto fail;
+	}
+
+#ifdef LDAP_SLAPI
+	/* netscape supportedExtension */
+	for ( i = 0; (bv = slapi_int_get_supported_extop(i)) != NULL; i++ ) {
+		if( attr_merge_one( e, ad_supportedExtension, bv, NULL ) ) {
+			goto fail;
+		}
+	}
+#endif /* LDAP_SLAPI */
+
+	/* supportedFeatures */
+	if ( supportedFeatures == NULL ) {
+		supported_feature_init();
+	}
+
+	if( attr_merge( e, ad_supportedFeatures, supportedFeatures, NULL ) ) {
+		goto fail;
+	}
+
+	/* supportedLDAPVersion */
+		/* don't publish version 2 as we don't really support it
+		 * (even when configured to accept version 2 Bind requests)
+		 * and the value would never be used by true LDAPv2 (or LDAPv3)
+		 * clients.
+		 */
+	for ( i=LDAP_VERSION3; i<=LDAP_VERSION_MAX; i++ ) {
+		char buf[sizeof("255")];
+		snprintf(buf, sizeof buf, "%d", i);
+		val.bv_val = buf;
+		val.bv_len = strlen( val.bv_val );
+		if( attr_merge_one( e, ad_supportedLDAPVersion, &val, NULL ) ) {
+			goto fail;
+		}
+	}
+
+	/* supportedSASLMechanism */
+	supportedSASLMechanisms = slap_sasl_mechs( conn );
+
+	if( supportedSASLMechanisms != NULL ) {
+		for ( i=0; supportedSASLMechanisms[i] != NULL; i++ ) {
+			val.bv_val = supportedSASLMechanisms[i];
+			val.bv_len = strlen( val.bv_val );
+			if( attr_merge_one( e, ad_supportedSASLMechanisms, &val, NULL ) ) {
+				ldap_charray_free( supportedSASLMechanisms );
+				goto fail;
+			}
+		}
+		ldap_charray_free( supportedSASLMechanisms );
+	}
+
+	if ( default_referral != NULL ) {
+		if( attr_merge( e, ad_ref, default_referral, NULL /* FIXME */ ) ) {
+			goto fail;
+		}
+	}
+
+	if( usr_attr != NULL) {
+		Attribute *a;
+		for( a = usr_attr->e_attrs; a != NULL; a = a->a_next ) {
+			if( attr_merge( e, a->a_desc, a->a_vals,
+				(a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) )
+			{
+				goto fail;
+			}
+		}
+	}
+
+	if ( extra_info ) {
+		entry_info_t	*ei = extra_info;
+
+		for ( ; ei; ei = ei->next ) {
+			ei->func( ei->arg, e );
+		}
+	}
+
+	*entry = e;
+	return LDAP_SUCCESS;
+}
+
+int
+root_dse_init( void )
+{
+	return 0;
+}
+
+int
+root_dse_destroy( void )
+{
+	if ( usr_attr ) {
+		entry_free( usr_attr );
+		usr_attr = NULL;
+	}
+
+	return 0;
+}
+
+/*
+ * Read the entries specified in fname and merge the attributes
+ * to the user defined rootDSE. Note thaat if we find any errors
+ * what so ever, we will discard the entire entries, print an
+ * error message and return.
+ */
+int
+root_dse_read_file( const char *fname )
+{
+	struct LDIFFP	*fp;
+	int rc = 0, lmax = 0, ldifrc;
+	unsigned long lineno = 0;
+	char	*buf = NULL;
+
+	if ( (fp = ldif_open( fname, "r" )) == NULL ) {
+		Debug( LDAP_DEBUG_ANY,
+			"root_dse_read_file: could not open rootdse attr file \"%s\" - absolute path?\n",
+			fname, 0, 0 );
+		perror( fname );
+		return EXIT_FAILURE;
+	}
+
+	usr_attr = entry_alloc();
+	if( usr_attr == NULL ) {
+		Debug( LDAP_DEBUG_ANY,
+			"root_dse_read_file: entry_alloc failed", 0, 0, 0 );
+		ldif_close( fp );
+		return LDAP_OTHER;
+	}
+	usr_attr->e_attrs = NULL;
+
+	while(( ldifrc = ldif_read_record( fp, &lineno, &buf, &lmax )) > 0 ) {
+		Entry *e = str2entry( buf );
+		Attribute *a;
+
+		if( e == NULL ) {
+			Debug( LDAP_DEBUG_ANY, "root_dse_read_file: "
+				"could not parse entry (file=\"%s\" line=%lu)\n",
+				fname, lineno, 0 );
+			rc = LDAP_OTHER;
+			break;
+		}
+
+		/* make sure the DN is the empty DN */
+		if( e->e_nname.bv_len ) {
+			Debug( LDAP_DEBUG_ANY,
+				"root_dse_read_file: invalid rootDSE "
+				"- dn=\"%s\" (file=\"%s\" line=%lu)\n",
+				e->e_dn, fname, lineno );
+			entry_free( e );
+			rc = LDAP_OTHER;
+			break;
+		}
+
+		/*
+		 * we found a valid entry, so walk thru all the attributes in the
+		 * entry, and add each attribute type and description to the
+		 * usr_attr entry
+		 */
+
+		for(a = e->e_attrs; a != NULL; a = a->a_next) {
+			if( attr_merge( usr_attr, a->a_desc, a->a_vals,
+				(a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) )
+			{
+				rc = LDAP_OTHER;
+				break;
+			}
+		}
+
+		entry_free( e );
+		if (rc) break;
+	}
+
+	if ( ldifrc < 0 )
+		rc = LDAP_OTHER;
+
+	if (rc) {
+		entry_free( usr_attr );
+		usr_attr = NULL;
+	}
+
+	ch_free( buf );
+
+	ldif_close( fp );
+
+	Debug(LDAP_DEBUG_CONFIG, "rootDSE file=\"%s\" read.\n", fname, 0, 0);
+	return rc;
+}
+
+int
+slap_discover_feature(
+	slap_bindconf	*sb,
+	const char	*attr,
+	const char	*val )
+{
+	LDAP		*ld = NULL;
+	LDAPMessage	*res = NULL, *entry;
+	int		rc, i;
+	struct berval	bv_val,
+			**values = NULL;
+	char		*attrs[ 2 ] = { NULL, NULL };
+
+	rc = slap_client_connect( &ld, sb );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	attrs[ 0 ] = (char *) attr;
+	rc = ldap_search_ext_s( ld, "", LDAP_SCOPE_BASE, "(objectClass=*)",
+			attrs, 0, NULL, NULL, NULL, 0, &res );
+	if ( rc != LDAP_SUCCESS ) {
+		goto done;
+	}
+
+	entry = ldap_first_entry( ld, res );
+	if ( entry == NULL ) {
+		goto done;
+	}
+
+	values = ldap_get_values_len( ld, entry, attrs[ 0 ] );
+	if ( values == NULL ) {
+		rc = LDAP_NO_SUCH_ATTRIBUTE;
+		goto done;
+	}
+
+	ber_str2bv( val, 0, 0, &bv_val );
+	for ( i = 0; values[ i ] != NULL; i++ ) {
+		if ( bvmatch( &bv_val, values[ i ] ) ) {
+			rc = LDAP_COMPARE_TRUE;
+			goto done;
+		}
+	}
+
+	rc = LDAP_COMPARE_FALSE;
+
+done:;
+	if ( values != NULL ) {
+		ldap_value_free_len( values );
+	}
+
+	if ( res != NULL ) {
+		ldap_msgfree( res );
+	}
+
+	ldap_unbind_ext( ld, NULL, NULL );
+
+	return rc;
+}
+