1 /* referral.c - muck with referrals */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2014 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
21 #include <ac/socket.h>
23 #include <ac/string.h>
26 #include <ac/unistd.h>
31 * This routine generates the DN appropriate to return in
34 static char * referral_dn_muck(
36 struct berval * baseDN,
37 struct berval * targetDN )
41 struct berval nrefDN = BER_BVNULL;
42 struct berval nbaseDN = BER_BVNULL;
43 struct berval ntargetDN = BER_BVNULL;
46 /* no base, return target */
47 return targetDN ? ch_strdup( targetDN->bv_val ) : NULL;
51 bvin.bv_val = (char *)refDN;
52 bvin.bv_len = strlen( refDN );
54 rc = dnPretty( NULL, &bvin, &nrefDN, NULL );
55 if( rc != LDAP_SUCCESS ) {
62 /* continuation reference
63 * if refDN present return refDN
66 return nrefDN.bv_len ? nrefDN.bv_val : ch_strdup( baseDN->bv_val );
69 rc = dnPretty( NULL, targetDN, &ntargetDN, NULL );
70 if( rc != LDAP_SUCCESS ) {
71 /* Invalid targetDN */
72 ch_free( nrefDN.bv_val );
77 rc = dnPretty( NULL, baseDN, &nbaseDN, NULL );
78 if( rc != LDAP_SUCCESS ) {
80 ch_free( nrefDN.bv_val );
81 ch_free( ntargetDN.bv_val );
85 if( dn_match( &nbaseDN, &nrefDN ) ) {
86 ch_free( nrefDN.bv_val );
87 ch_free( nbaseDN.bv_val );
88 return ntargetDN.bv_val;
94 if( ntargetDN.bv_len < nbaseDN.bv_len ) {
95 ch_free( nrefDN.bv_val );
96 ch_free( nbaseDN.bv_val );
97 return ntargetDN.bv_val;
101 &ntargetDN.bv_val[ntargetDN.bv_len-nbaseDN.bv_len],
104 /* target not subordinate to base */
105 ch_free( nrefDN.bv_val );
106 ch_free( nbaseDN.bv_val );
107 return ntargetDN.bv_val;
110 muck.bv_len = ntargetDN.bv_len + nrefDN.bv_len - nbaseDN.bv_len;
111 muck.bv_val = ch_malloc( muck.bv_len + 1 );
113 strncpy( muck.bv_val, ntargetDN.bv_val,
114 ntargetDN.bv_len-nbaseDN.bv_len );
115 strcpy( &muck.bv_val[ntargetDN.bv_len-nbaseDN.bv_len],
118 ch_free( nrefDN.bv_val );
119 ch_free( nbaseDN.bv_val );
120 ch_free( ntargetDN.bv_val );
126 ch_free( nrefDN.bv_val );
127 return ntargetDN.bv_val;
131 /* validate URL for global referral use
132 * LDAP URLs must not have:
133 * DN, attrs, scope, nor filter
134 * Any non-LDAP URL is okay
136 * XXYYZ: should return an error string
138 int validate_global_referral( const char *url )
143 rc = ldap_url_parse_ext( url, &lurl, LDAP_PVT_URL_PARSE_NONE );
146 case LDAP_URL_SUCCESS:
149 case LDAP_URL_ERR_BADSCHEME:
150 /* not LDAP hence valid */
151 Debug( LDAP_DEBUG_CONFIG, "referral \"%s\": not LDAP.\n", url, 0, 0 );
155 /* other error, bail */
156 Debug( LDAP_DEBUG_ANY,
157 "referral: invalid URL (%s): %s (%d)\n",
158 url, "" /* ldap_url_error2str(rc) */, rc );
164 if( lurl->lud_dn && *lurl->lud_dn ) {
165 Debug( LDAP_DEBUG_ANY,
166 "referral: URL (%s): contains DN\n",
170 } else if( lurl->lud_attrs ) {
171 Debug( LDAP_DEBUG_ANY,
172 "referral: URL (%s): requests attributes\n",
176 } else if( lurl->lud_scope != LDAP_SCOPE_DEFAULT ) {
177 Debug( LDAP_DEBUG_ANY,
178 "referral: URL (%s): contains explicit scope\n",
182 } else if( lurl->lud_filter ) {
183 Debug( LDAP_DEBUG_ANY,
184 "referral: URL (%s): contains explicit filter\n",
189 ldap_free_urldesc( lurl );
193 BerVarray referral_rewrite(
196 struct berval *target,
201 struct berval *iv, *jv;
207 for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
208 /* just count them */
215 refs = ch_malloc( ( i + 1 ) * sizeof( struct berval ) );
217 for ( iv = in, jv = refs; !BER_BVISNULL( iv ); iv++ ) {
222 rc = ldap_url_parse_ext( iv->bv_val, &url, LDAP_PVT_URL_PARSE_NONE );
223 if ( rc == LDAP_URL_ERR_BADSCHEME ) {
224 ber_dupbv( jv++, iv );
227 } else if ( rc != LDAP_URL_SUCCESS ) {
232 url->lud_dn = referral_dn_muck( ( dn && *dn ) ? dn : NULL,
236 if ( url->lud_scope == LDAP_SCOPE_DEFAULT ) {
237 url->lud_scope = scope;
240 jv->bv_val = ldap_url_desc2str( url );
241 if ( jv->bv_val != NULL ) {
242 jv->bv_len = strlen( jv->bv_val );
249 ldap_free_urldesc( url );
264 BerVarray get_entry_referrals(
271 struct berval *iv, *jv;
273 AttributeDescription *ad_ref = slap_schema.si_ad_ref;
275 attr = attr_find( e->e_attrs, ad_ref );
277 if( attr == NULL ) return NULL;
279 for( i=0; attr->a_vals[i].bv_val != NULL; i++ ) {
280 /* count references */
283 if( i < 1 ) return NULL;
285 refs = ch_malloc( (i + 1) * sizeof(struct berval));
287 for( iv=attr->a_vals, jv=refs; iv->bv_val != NULL; iv++ ) {
292 for( k=0; k<jv->bv_len; k++ ) {
293 if( isspace( (unsigned char) jv->bv_val[k] ) ) {
294 jv->bv_val[k] = '\0';
300 if( jv->bv_len > 0 ) {
315 /* we should check that a referral value exists... */
327 AttributeDescription *aliasedObjectName
328 = slap_schema.si_ad_aliasedObjectName;
330 a = attr_find( e->e_attrs, aliasedObjectName );
334 * there was an aliasedobjectname defined but no data.
336 *err = LDAP_ALIAS_PROBLEM;
337 *text = "alias missing aliasedObjectName attribute";
342 * aliasedObjectName should be SINGLE-VALUED with a single value.
344 if ( a->a_vals[0].bv_val == NULL ) {
346 * there was an aliasedobjectname defined but no data.
348 *err = LDAP_ALIAS_PROBLEM;
349 *text = "alias missing aliasedObjectName value";
353 if( a->a_nvals[1].bv_val != NULL ) {
354 *err = LDAP_ALIAS_PROBLEM;
355 *text = "alias has multivalued aliasedObjectName";
359 *ndn = a->a_nvals[0];