389-ds-base/ldap/servers/plugins/syntaxes/dn.c

/** BEGIN COPYRIGHT BLOCK
 * Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
 * Copyright (C) 2005 Red Hat, Inc.
 * All rights reserved.
 *
 * License: GPL (version 3 or any later version).
 * See LICENSE for details. 
 * END COPYRIGHT BLOCK **/

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

/* dn.c - dn syntax routines */

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "syntax.h"

static int dn_filter_ava( Slapi_PBlock *pb, struct berval *bvfilter,
	Slapi_Value **bvals, int ftype, Slapi_Value **retVal );
static int dn_filter_sub( Slapi_PBlock *pb, char *initial, char **any,
	char *final, Slapi_Value **bvals );
static int dn_values2keys( Slapi_PBlock *pb, Slapi_Value **vals,
	Slapi_Value ***ivals, int ftype );
static int dn_assertion2keys_ava( Slapi_PBlock *pb, Slapi_Value *val,
	Slapi_Value ***ivals, int ftype );
static int dn_assertion2keys_sub( Slapi_PBlock *pb, char *initial, char **any,
	char *final, Slapi_Value ***ivals );
static int dn_validate( struct berval *val );
static void dn_normalize(
	Slapi_PBlock *pb,
	char    *s,
	int     trim_spaces,
	char    **alt
);

/* the first name is the official one from RFC 2252 */
static char *names[] = { "DN", DN_SYNTAX_OID, 0 };

static Slapi_PluginDesc pdesc = { "dn-syntax", VENDOR,
	DS_PACKAGE_VERSION, "distinguished name attribute syntax plugin" };

static const char *distinguishedNameMatch_names[] = {"distinguishedNameMatch", "2.5.13.1", NULL};

static struct mr_plugin_def mr_plugin_table[] = {
    {
        {
            "2.5.13.1",
            NULL,
            "distinguishedNameMatch",
            "The distinguishedNameMatch rule compares an assertion value of the DN "
                "syntax to an attribute value of a syntax (e.g., the DN syntax) whose "
                "corresponding ASN.1 type is DistinguishedName. "
                "The rule evaluates to TRUE if and only if the attribute value and the "
                "assertion value have the same number of relative distinguished names "
                "and corresponding relative distinguished names (by position) are the "
                "same.  A relative distinguished name (RDN) of the assertion value is "
                "the same as an RDN of the attribute value if and only if they have "
                "the same number of attribute value assertions and each attribute "
                "value assertion (AVA) of the first RDN is the same as the AVA of the "
                "second RDN with the same attribute type.  The order of the AVAs is "
                "not significant.  Also note that a particular attribute type may "
                "appear in at most one AVA in an RDN.  Two AVAs with the same "
                "attribute type are the same if their values are equal according to "
                "the equality matching rule of the attribute type.  If one or more of "
                "the AVA comparisons evaluate to Undefined and the remaining AVA "
                "comparisons return TRUE then the distinguishedNameMatch rule "
                "evaluates to Undefined.",
            DN_SYNTAX_OID,
            0,
            NULL /* dn only for now */
        }, /* matching rule desc */
        {
            "distinguishedNameMatch-mr",
            VENDOR,
            DS_PACKAGE_VERSION,
            "distinguishedNameMatch matching rule plugin"
        }, /* plugin desc */
        distinguishedNameMatch_names, /* matching rule name/oid/aliases */
        NULL,
        NULL,
        dn_filter_ava,
        NULL,
        dn_values2keys,
        dn_assertion2keys_ava,
        NULL,
        NULL,
        NULL /* mr_nomalise */
    },
};

static size_t mr_plugin_table_size = sizeof(mr_plugin_table)/sizeof(mr_plugin_table[0]);

static int
matching_rule_plugin_init(Slapi_PBlock *pb)
{
	return syntax_matching_rule_plugin_init(pb, mr_plugin_table, mr_plugin_table_size);
}

static int
register_matching_rule_plugins(void)
{
	return syntax_register_matching_rule_plugins(mr_plugin_table, mr_plugin_table_size, matching_rule_plugin_init);
}

int
dn_init( Slapi_PBlock *pb )
{
	int	rc;

	LDAPDebug( LDAP_DEBUG_PLUGIN, "=> dn_init\n", 0, 0, 0 );

	rc = slapi_pblock_set( pb, SLAPI_PLUGIN_VERSION,
	    (void *) SLAPI_PLUGIN_VERSION_01 );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_DESCRIPTION,
	    (void *)&pdesc );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_FILTER_AVA,
	    (void *) dn_filter_ava );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_FILTER_SUB,
	    (void *) dn_filter_sub );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_VALUES2KEYS,
	    (void *) dn_values2keys );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_ASSERTION2KEYS_AVA,
	    (void *) dn_assertion2keys_ava );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_ASSERTION2KEYS_SUB,
	    (void *) dn_assertion2keys_sub );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_NAMES,
	    (void *) names );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_OID,
	    (void *) DN_SYNTAX_OID );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_VALIDATE,
	    (void *) dn_validate );
	rc |= slapi_pblock_set( pb, SLAPI_PLUGIN_SYNTAX_NORMALIZE,
	    (void *) dn_normalize );

	rc |= register_matching_rule_plugins();
	LDAPDebug( LDAP_DEBUG_PLUGIN, "<= dn_init %d\n", rc, 0, 0 );
	return( rc );
}

static int
dn_filter_ava( Slapi_PBlock *pb, struct berval *bvfilter,
    Slapi_Value **bvals, int ftype, Slapi_Value **retVal )
{
	int filter_normalized = 0;
	int syntax = SYNTAX_CIS | SYNTAX_DN;
	if (pb) {
		slapi_pblock_get( pb, SLAPI_PLUGIN_SYNTAX_FILTER_NORMALIZED,
		                  &filter_normalized );
		if (filter_normalized) {
			syntax |= SYNTAX_NORM_FILT;
		}
	}
	return( string_filter_ava( bvfilter, bvals, syntax, ftype, retVal ) );
}

static int
dn_filter_sub( Slapi_PBlock *pb, char *initial, char **any, char *final,
    Slapi_Value **bvals )
{
	return( string_filter_sub( pb, initial, any, final, bvals,
	    SYNTAX_CIS | SYNTAX_DN ) );
}

static int
dn_values2keys( Slapi_PBlock *pb, Slapi_Value **vals, Slapi_Value ***ivals,
    int ftype )
{
	return( string_values2keys( pb, vals, ivals, SYNTAX_CIS | SYNTAX_DN,
	    ftype ) );
}

static int
dn_assertion2keys_ava( Slapi_PBlock *pb, Slapi_Value *val,
    Slapi_Value ***ivals, int ftype )
{
	return( string_assertion2keys_ava( pb, val, ivals,
	    SYNTAX_CIS | SYNTAX_DN, ftype ) );
}

static int
dn_assertion2keys_sub( Slapi_PBlock *pb, char *initial, char **any, char *final,
    Slapi_Value ***ivals )
{
	return( string_assertion2keys_sub( pb, initial, any, final, ivals,
	    SYNTAX_CIS | SYNTAX_DN ) );
}

static int dn_validate( struct berval *val )
{
	int rc = 0; /* Assume value is valid */

	/* A 0 length value is valid for the DN syntax. */
	if (val == NULL) {
		rc = 1;
	} else if (val->bv_len > 0) {
		rc = distinguishedname_validate(val->bv_val, &(val->bv_val[val->bv_len - 1]));
	}

	return rc;
}

static void dn_normalize(
	Slapi_PBlock	*pb,
	char	*s,
	int		trim_spaces,
	char	**alt
)
{
	value_normalize_ext(s, SYNTAX_CIS | SYNTAX_DN, trim_spaces, alt);
	return;
}