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 1999-2004 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 #ifdef SLAPD_OVER_RWM
  28
  29 #include <stdio.h>
  30
  31 #include <ac/string.h>
  32 #include <ac/socket.h>
  33
  34 #include "slap.h"
  35 #include "rwm.h"
  36
  37 /* FIXME: after rewriting, we should also remap attributes ...  */
  38
  39 #ifdef ENABLE_REWRITE
  40 int
  41 rwm_dn_massage(
  42         dncookie *dc,
  43         struct berval *dn,
  44         struct berval *res
  45 )
  46 {
  47         int rc = 0;
  48
  49         rc = rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
  50                         ( dn->bv_len ? dn->bv_val : "" ),
  51                         dc->conn, &res->bv_val );
  52         switch ( rc ) {
  53         case REWRITE_REGEXEC_OK:
  54                 if ( res->bv_val != NULL ) {
  55                         res->bv_len = strlen( res->bv_val );
  56                 } else {
  57                         *res = *dn;
  58                 }
  59 #ifdef NEW_LOGGING
  60                 LDAP_LOG( BACK_LDAP, DETAIL1,
  61                         "[rw] %s: \"%s\" -> \"%s\"\n",
  62                         dc->ctx, dn->bv_val, res->bv_val );
  63 #else /* !NEW_LOGGING */
  64                 Debug( LDAP_DEBUG_ARGS,
  65                         "[rw] %s: \"%s\" -> \"%s\"\n",
  66                         dc->ctx, dn->bv_val, res->bv_val );
  67 #endif /* !NEW_LOGGING */
  68                 rc = LDAP_SUCCESS;
  69                 break;
  70
  71         case REWRITE_REGEXEC_UNWILLING:
  72                 if ( dc->rs ) {
  73                         dc->rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
  74                         dc->rs->sr_text = "Operation not allowed";
  75                 }
  76                 rc = LDAP_UNWILLING_TO_PERFORM;
  77                 break;
  78
  79         case REWRITE_REGEXEC_ERR:
  80                 if ( dc->rs ) {
  81                         dc->rs->sr_err = LDAP_OTHER;
  82                         dc->rs->sr_text = "Rewrite error";
  83                 }
  84                 rc = LDAP_OTHER;
  85                 break;
  86         }
  87
  88         return rc;
  89 }
  90
  91 #else
  92 /*
  93  * rwm_dn_massage
  94  *
  95  * Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
  96  */
  97 int
  98 rwm_dn_massage(
  99         dncookie *dc,
 100         struct berval *odn,
 101         struct berval *res
 102 )
 103 {
 104         int     i, src, dst;
 105         struct berval pretty = {0,NULL}, *dn = odn;
 106
 107         assert( res );
 108
 109         if ( dn == NULL ) {
 110                 res->bv_val = NULL;
 111                 res->bv_len = 0;
 112                 return 0;
 113         }
 114         if ( dc->rwmap == NULL || dc->rwmap->rwm_suffix_massage == NULL ) {
 115                 *res = *dn;
 116                 return 0;
 117         }
 118
 119         if ( dc->tofrom ) {
 120                 src = 0 + dc->normalized;
 121                 dst = 2 + dc->normalized;
 122         } else {
 123                 src = 2 + dc->normalized;
 124                 dst = 0 + dc->normalized;
 125                 /* DN from remote server may be in arbitrary form.
 126                  * Pretty it so we can parse reliably.
 127                  */
 128                 dnPretty( NULL, dn, &pretty, NULL );
 129                 if (pretty.bv_val) dn = &pretty;
 130         }
 131
 132         for ( i = 0;
 133                 dc->rwmap->rwm_suffix_massage[i].bv_val != NULL;
 134                 i += 4 ) {
 135                 int aliasLength = dc->rwmap->rwm_suffix_massage[i+src].bv_len;
 136                 int diff = dn->bv_len - aliasLength;
 137
 138                 if ( diff < 0 ) {
 139                         /* alias is longer than dn */
 140                         continue;
 141                 } else if ( diff > 0 && ( !DN_SEPARATOR(dn->bv_val[diff-1]))) {
 142                         /* boundary is not at a DN separator */
 143                         continue;
 144                         /* At a DN Separator */
 145                 }
 146
 147                 if ( !strcmp( dc->rwmap->rwm_suffix_massage[i+src].bv_val, &dn->bv_val[diff] ) ) {
 148                         res->bv_len = diff + dc->rwmap->rwm_suffix_massage[i+dst].bv_len;
 149                         res->bv_val = ch_malloc( res->bv_len + 1 );
 150                         strncpy( res->bv_val, dn->bv_val, diff );
 151                         strcpy( &res->bv_val[diff], dc->rwmap->rwm_suffix_massage[i+dst].bv_val );
 152 #ifdef NEW_LOGGING
 153                         LDAP_LOG ( BACK_LDAP, ARGS,
 154                                 "rwm_dn_massage: converted \"%s\" to \"%s\"\n",
 155                                 dn->bv_val, res->bv_val, 0 );
 156 #else
 157                         Debug( LDAP_DEBUG_ARGS,
 158                                 "rwm_dn_massage:"
 159                                 " converted \"%s\" to \"%s\"\n",
 160                                 dn->bv_val, res->bv_val, 0 );
 161 #endif
 162                         break;
 163                 }
 164         }
 165         if (pretty.bv_val) {
 166                 ch_free(pretty.bv_val);
 167                 dn = odn;
 168         }
 169         /* Nothing matched, just return the original DN */
 170         if (res->bv_val == NULL) {
 171                 *res = *dn;
 172         }
 173
 174         return 0;
 175 }
 176 #endif /* !ENABLE_REWRITE */
 177
 178 #endif /* SLAPD_OVER_RWM */