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 *in,
  44         struct berval *dn,
  45         struct berval *ndn
  46 )
  47 {
  48         int             rc = 0;
  49         struct berval   mdn;
  50
  51         rc = rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
  52                         ( in->bv_len ? in->bv_val : "" ),
  53                         dc->conn, &mdn.bv_val );
  54         switch ( rc ) {
  55         case REWRITE_REGEXEC_OK:
  56                 if ( !BER_BVISNULL( &mdn ) ) {
  57
  58                         mdn.bv_len = strlen( mdn.bv_val );
  59
  60                         if ( dn != NULL && ndn != NULL ) {
  61                                 rc = dnPrettyNormal( NULL, &mdn, dn, ndn, NULL );
  62
  63                         } else if ( dn != NULL ) {
  64                                 rc = dnPretty( NULL, &mdn, dn, NULL );
  65
  66                         } else if ( ndn != NULL) {
  67                                 rc = dnNormalize( 0, NULL, NULL, &mdn, ndn, NULL );
  68                         }
  69
  70                         if ( mdn.bv_val != in->bv_val ) {
  71                                 ch_free( mdn.bv_val );
  72                         }
  73
  74                 } else {
  75                         /* we assume the input string is already in pretty form,
  76                          * and that the normalized version is already available */
  77                         *dn = *in;
  78                         if ( ndn != NULL ) {
  79                                 BER_BVZERO( ndn );
  80                         }
  81                         rc = LDAP_SUCCESS;
  82                 }
  83
  84 #ifdef NEW_LOGGING
  85                 LDAP_LOG( BACK_LDAP, DETAIL1,
  86                         "[rw] %s: \"%s\" -> \"%s\"\n",
  87                         dc->ctx, in->bv_val, dn->bv_val );
  88 #else /* !NEW_LOGGING */
  89                 Debug( LDAP_DEBUG_ARGS,
  90                         "[rw] %s: \"%s\" -> \"%s\"\n",
  91                         dc->ctx, in->bv_val, dn->bv_val );
  92 #endif /* !NEW_LOGGING */
  93                 break;
  94
  95         case REWRITE_REGEXEC_UNWILLING:
  96                 if ( dc->rs ) {
  97                         dc->rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
  98                         dc->rs->sr_text = "Operation not allowed";
  99                 }
 100                 rc = LDAP_UNWILLING_TO_PERFORM;
 101                 break;
 102
 103         case REWRITE_REGEXEC_ERR:
 104                 if ( dc->rs ) {
 105                         dc->rs->sr_err = LDAP_OTHER;
 106                         dc->rs->sr_text = "Rewrite error";
 107                 }
 108                 rc = LDAP_OTHER;
 109                 break;
 110         }
 111
 112         return rc;
 113 }
 114
 115 #else
 116 /*
 117  * rwm_dn_massage
 118  *
 119  * Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
 120  */
 121 int
 122 rwm_dn_massage(
 123         dncookie *dc,
 124         struct berval *tmpin,
 125         struct berval *dn,
 126         struct berval *ndn
 127 )
 128 {
 129         int             i, src, dst;
 130         struct berval   pretty = BER_BVNULL,
 131                         normal = BER_BVNULL,
 132                         *in = tmpin;
 133
 134         assert( dn );
 135
 136         if ( in == NULL || BER_BVISNULL( in ) ) {
 137                 dn->bv_val = NULL;
 138                 dn->bv_len = 0;
 139                 return LDAP_SUCCESS;
 140         }
 141         if ( dc->rwmap == NULL || dc->rwmap->rwm_suffix_massage == NULL ) {
 142                 *dn = *in;
 143                 return LDAP_SUCCESS;
 144         }
 145
 146         if ( dc->tofrom ) {
 147                 src = 0 + dc->normalized;
 148                 dst = 2 + dc->normalized;
 149
 150         } else {
 151                 int     rc;
 152
 153                 src = 2 + dc->normalized;
 154                 dst = 0 + dc->normalized;
 155
 156                 /* DN from remote server may be in arbitrary form.
 157                  * Pretty it so we can parse reliably.
 158                  */
 159                 if ( dc->normalized && dn == NULL ) {
 160                         rc = dnNormalize( 0, NULL, NULL, in, &normal, NULL );
 161
 162                 } else if ( !dc->normalized && ndn == NULL ) {
 163                         rc = dnPretty( NULL, in, &pretty, NULL );
 164
 165                 } else {
 166                         rc = dnPrettyNormal( NULL, in, &pretty, &normal, NULL );
 167                 }
 168
 169                 if ( rc != LDAP_SUCCESS ) {
 170                         return rc;
 171                 }
 172
 173                 if ( dc->normalized && !BER_BVISNULL( &normal) ) {
 174                         in = &normal;
 175
 176                 } else if ( !dc->normalized && !BER_BVISNULL( &pretty ) ) {
 177                         in = &pretty;
 178                 }
 179         }
 180
 181         for ( i = 0;
 182                 dc->rwmap->rwm_suffix_massage[i].bv_val != NULL;
 183                 i += 4 ) {
 184                 int aliasLength = dc->rwmap->rwm_suffix_massage[i+src].bv_len;
 185                 int diff = in->bv_len - aliasLength;
 186
 187                 if ( diff < 0 ) {
 188                         /* alias is longer than dn */
 189                         continue;
 190
 191                 } else if ( diff > 0 && ( !DN_SEPARATOR(in->bv_val[diff-1]))) {
 192                         /* FIXME: DN_SEPARATOR() is intended to work
 193                          * on a normalized/pretty DN, so that ';'
 194                          * is never used as a DN separator */
 195                         continue;
 196                         /* At a DN Separator */
 197                 }
 198
 199                 if ( !strcmp( dc->rwmap->rwm_suffix_massage[i+src].bv_val, &in->bv_val[diff] ) ) {
 200                         dn->bv_len = diff + dc->rwmap->rwm_suffix_massage[i+dst].bv_len;
 201                         dn->bv_val = ch_malloc( dn->bv_len + 1 );
 202                         strncpy( dn->bv_val, in->bv_val, diff );
 203                         strcpy( &dn->bv_val[diff], dc->rwmap->rwm_suffix_massage[i+dst].bv_val );
 204 #ifdef NEW_LOGGING
 205                         LDAP_LOG ( BACK_LDAP, ARGS,
 206                                 "rwm_dn_massage: converted \"%s\" to \"%s\"\n",
 207                                 in->bv_val, dn->bv_val, 0 );
 208 #else
 209                         Debug( LDAP_DEBUG_ARGS,
 210                                 "rwm_dn_massage:"
 211                                 " converted \"%s\" to \"%s\"\n",
 212                                 in->bv_val, dn->bv_val, 0 );
 213 #endif
 214                         break;
 215                 }
 216         }
 217
 218         if ( !BER_BVISNULL( &pretty ) ) {
 219                 ch_free( pretty.bv_val );
 220         }
 221
 222         if ( !BER_BVISNULL( &normal ) ) {
 223                 ch_free( normal.bv_val );
 224         }
 225
 226         in = tmpin;
 227
 228         /* Nothing matched, just return the original DN */
 229         if ( dc->normalized && BER_BVISNULL( ndn ) ) {
 230                 *ndn = *in;
 231
 232         } else if ( !dc->normalized && BER_BVISNULL( dn ) ) {
 233                 *dn = *in;
 234         }
 235
 236         return LDAP_SUCCESS;
 237 }
 238 #endif /* !ENABLE_REWRITE */
 239
 240 #endif /* SLAPD_OVER_RWM */