git.sur5r.net Git - openldap/blob - servers/slapd/suffixalias.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  *
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file in the top level
   6  * directory of this package.
   7  */
   8 /* Portions
   9  * Copyright (c) 1998 Will Ballantyne, ITSD, Government of BC
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms are permitted
  13  * provided that this notice is preserved and that due credit is given
  14  * to ITSD, Government of BC. The name of ITSD
  15  * may not be used to endorse or promote products derived from this
  16  * software without specific prior written permission. This software
  17  * is provided ``as is'' without express or implied warranty.
  18  */
  19
  20 #include "portable.h"
  21
  22 #include <stdio.h>
  23 #include <ac/string.h>
  24 #include <ac/socket.h>
  25 #include "slap.h"
  26
  27 /*
  28  * given a normalized uppercased dn (or root part),
  29  * return an aliased dn if any of the alias suffixes match
  30  */
  31 void suffix_alias(
  32         Backend *be,
  33         struct berval *dn )
  34 {
  35         int     i, dnLength;
  36
  37         if(dn == NULL || be == NULL || dn->bv_len == 0)
  38                 return;
  39
  40         dnLength = dn->bv_len;
  41
  42         for ( i = 0;
  43                 be->be_suffixAlias != NULL && be->be_suffixAlias[i] != NULL;
  44                 i += 2 )
  45         {
  46                 int aliasLength = be->be_suffixAlias[i]->bv_len;
  47                 int diff = dnLength - aliasLength;
  48
  49                 if ( diff < 0 ) {
  50                         /* alias is longer than dn */
  51                         continue;
  52                 } else if ( diff > 0 ) {
  53                         if ( ! DN_SEPARATOR(dn->bv_val[diff-1]) ) {
  54                                 /* boundary is not at a DN separator */
  55                                 continue;
  56                         }
  57                         /* At a DN Separator */
  58                         /* XXX or an escaped separator... oh well */
  59                 }
  60
  61                 if (!strcmp(be->be_suffixAlias[i]->bv_val, &dn->bv_val[diff])) {
  62                         char *oldDN = dn->bv_val;
  63                         dn->bv_len = diff + be->be_suffixAlias[i+1]->bv_len;
  64                         dn->bv_val = ch_malloc( dn->bv_len + 1 );
  65                         strncpy( dn->bv_val, oldDN, diff );
  66                         strcpy( &dn->bv_val[diff], be->be_suffixAlias[i+1]->bv_val );
  67 #ifdef NEW_LOGGING
  68                         LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
  69                                    "suffix_alias: converted \"%s\" to \"%s\"\n",
  70                                    oldDN, dn->bv_val ));
  71 #else
  72                         Debug( LDAP_DEBUG_ARGS,
  73                                 "suffix_alias: converted \"%s\" to \"%s\"\n",
  74                                 oldDN, dn->bv_val, 0);
  75 #endif
  76
  77                         free (oldDN);
  78                         break;
  79                 }
  80         }
  81 }