git.sur5r.net Git - openldap/blob - servers/slapd/back-ldap/suffixmassage.c

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