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

   1 /* rwmdn.c - massages dns */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2003 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24
  25 #include "portable.h"
  26
  27 #include <stdio.h>
  28
  29 #include <ac/string.h>
  30 #include <ac/socket.h>
  31
  32 #include "slap.h"
  33 #include "rwm.h"
  34
  35 /* FIXME: after rewriting, we should also remap attributes ...  */
  36
  37 #ifdef ENABLE_REWRITE
  38 int
  39 rwm_dn_massage(
  40         dncookie *dc,
  41         struct berval *dn,
  42         struct berval *res
  43 )
  44 {
  45         int rc = 0;
  46
  47         switch ( rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
  48                                 (dn->bv_len ? dn->bv_val : ""),
  49                                 dc->conn, &res->bv_val ) )
  50         {
  51         case REWRITE_REGEXEC_OK:
  52                 if ( res->bv_val != NULL ) {
  53                         res->bv_len = strlen( res->bv_val );
  54                 } else {
  55                         *res = *dn;
  56                 }
  57 #ifdef NEW_LOGGING
  58                 LDAP_LOG( BACK_LDAP, DETAIL1,
  59                         "[rw] %s: \"%s\" -> \"%s\"\n", dc->ctx, dn->bv_val, res->bv_val );
  60 #else /* !NEW_LOGGING */
  61                 Debug( LDAP_DEBUG_ARGS,
  62                         "[rw] %s: \"%s\" -> \"%s\"\n", dc->ctx, dn->bv_val, res->bv_val );
  63 #endif /* !NEW_LOGGING */
  64                 rc = LDAP_SUCCESS;
  65                 break;
  66
  67         case REWRITE_REGEXEC_UNWILLING:
  68                 if ( dc->rs ) {
  69                         dc->rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
  70                         dc->rs->sr_text = "Operation not allowed";
  71                 }
  72                 rc = LDAP_UNWILLING_TO_PERFORM;
  73                 break;
  74
  75         case REWRITE_REGEXEC_ERR:
  76                 if ( dc->rs ) {
  77                         dc->rs->sr_err = LDAP_OTHER;
  78                         dc->rs->sr_text = "Rewrite error";
  79                 }
  80                 rc = LDAP_OTHER;
  81                 break;
  82         }
  83         return rc;
  84 }
  85
  86 #else
  87 /*
  88  * rwm_dn_massage
  89  *
  90  * Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
  91  */
  92 int
  93 rwm_dn_massage(
  94         dncookie *dc,
  95         struct berval *odn,
  96         struct berval *res
  97 )
  98 {
  99         int     i, src, dst;
 100         struct berval pretty = {0,NULL}, *dn = odn;
 101
 102         assert( res );
 103
 104         if ( dn == NULL ) {
 105                 res->bv_val = NULL;
 106                 res->bv_len = 0;
 107                 return 0;
 108         }
 109         if ( dc->rwmap == NULL || dc->rwmap->rwm_suffix_massage == NULL ) {
 110                 *res = *dn;
 111                 return 0;
 112         }
 113
 114         if ( dc->tofrom ) {
 115                 src = 0 + dc->normalized;
 116                 dst = 2 + dc->normalized;
 117         } else {
 118                 src = 2 + dc->normalized;
 119                 dst = 0 + dc->normalized;
 120                 /* DN from remote server may be in arbitrary form.
 121                  * Pretty it so we can parse reliably.
 122                  */
 123                 dnPretty( NULL, dn, &pretty, NULL );
 124                 if (pretty.bv_val) dn = &pretty;
 125         }
 126
 127         for ( i = 0;
 128                 dc->rwmap->rwm_suffix_massage[i].bv_val != NULL;
 129                 i += 4 ) {
 130                 int aliasLength = dc->rwmap->rwm_suffix_massage[i+src].bv_len;
 131                 int diff = dn->bv_len - aliasLength;
 132
 133                 if ( diff < 0 ) {
 134                         /* alias is longer than dn */
 135                         continue;
 136                 } else if ( diff > 0 && ( !DN_SEPARATOR(dn->bv_val[diff-1]))) {
 137                         /* boundary is not at a DN separator */
 138                         continue;
 139                         /* At a DN Separator */
 140                 }
 141
 142                 if ( !strcmp( dc->rwmap->rwm_suffix_massage[i+src].bv_val, &dn->bv_val[diff] ) ) {
 143                         res->bv_len = diff + dc->rwmap->rwm_suffix_massage[i+dst].bv_len;
 144                         res->bv_val = ch_malloc( res->bv_len + 1 );
 145                         strncpy( res->bv_val, dn->bv_val, diff );
 146                         strcpy( &res->bv_val[diff], dc->rwmap->rwm_suffix_massage[i+dst].bv_val );
 147 #ifdef NEW_LOGGING
 148                         LDAP_LOG ( BACK_LDAP, ARGS,
 149                                 "rwm_dn_massage: converted \"%s\" to \"%s\"\n",
 150                                 dn->bv_val, res->bv_val, 0 );
 151 #else
 152                         Debug( LDAP_DEBUG_ARGS,
 153                                 "rwm_dn_massage:"
 154                                 " converted \"%s\" to \"%s\"\n",
 155                                 dn->bv_val, res->bv_val, 0 );
 156 #endif
 157                         break;
 158                 }
 159         }
 160         if (pretty.bv_val) {
 161                 ch_free(pretty.bv_val);
 162                 dn = odn;
 163         }
 164         /* Nothing matched, just return the original DN */
 165         if (res->bv_val == NULL) {
 166                 *res = *dn;
 167         }
 168
 169         return 0;
 170 }
 171 #endif /* !ENABLE_REWRITE */