git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/attribute.c

   1 /* attribute.c - bdb backend acl attribute routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14
  15 #include "slap.h"
  16 #include "back-bdb.h"
  17 #include "proto-bdb.h"
  18
  19 /* return LDAP_SUCCESS IFF we can retrieve the attributes
  20  * of entry with e_ndn
  21  */
  22 int
  23 bdb_attribute(
  24         Backend *be,
  25         Connection *conn,
  26         Operation *op,
  27         Entry *target,
  28         struct berval *entry_ndn,
  29         AttributeDescription *entry_at,
  30         BerVarray *vals )
  31 {
  32         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  33         struct bdb_op_info *boi = NULL;
  34         DB_TXN *txn = NULL;
  35         Entry *e;
  36         int     i, j = 0, rc;
  37         Attribute *attr;
  38         BerVarray v;
  39         const char *entry_at_name = entry_at->ad_cname.bv_val;
  40         AccessControlState acl_state = ACL_STATE_INIT;
  41
  42 #ifdef NEW_LOGGING
  43         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  44                 "bdb_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
  45         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  46                 "bdb_attribute: at: \"%s\"\n", entry_at_name));
  47         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  48                 "bdb_attribute: tr dn: \"%s\"\n",
  49                 target ? target->e_ndn : "" ));
  50 #else
  51         Debug( LDAP_DEBUG_ARGS,
  52                 "=> bdb_attribute: gr dn: \"%s\"\n",
  53                 entry_ndn->bv_val, 0, 0 );
  54         Debug( LDAP_DEBUG_ARGS,
  55                 "=> bdb_attribute: at: \"%s\"\n",
  56                 entry_at_name, 0, 0 );
  57
  58         Debug( LDAP_DEBUG_ARGS,
  59                 "=> bdb_attribute: tr dn: \"%s\"\n",
  60                 target ? target->e_ndn : "", 0, 0 );
  61 #endif
  62
  63         if( op ) boi = (struct bdb_op_info *) op->o_private;
  64         if( boi != NULL && be == boi->boi_bdb ) {
  65                 txn = boi->boi_txn;
  66         }
  67
  68         if (target != NULL && dn_match(&target->e_nname, entry_ndn)) {
  69                 /* we already have a LOCKED copy of the entry */
  70                 e = target;
  71 #ifdef NEW_LOGGING
  72                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  73                         "bdb_attribute: target is LOCKED (%s)\n",
  74                         entry_ndn->bv_val ));
  75 #else
  76                 Debug( LDAP_DEBUG_ARGS,
  77                         "=> bdb_attribute: target is entry: \"%s\"\n",
  78                         entry_ndn->bv_val, 0, 0 );
  79 #endif
  80
  81
  82         } else {
  83                 /* can we find entry */
  84                 rc = bdb_dn2entry_r( be, NULL, entry_ndn, &e, NULL, 0 );
  85                 switch( rc ) {
  86                 case DB_NOTFOUND:
  87                 case 0:
  88                         break;
  89                 default:
  90                         if( txn != NULL ) {
  91                                 boi->boi_err = rc;
  92                         }
  93                         return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
  94                 }
  95                 if (e == NULL) {
  96 #ifdef NEW_LOGGING
  97                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  98                                 "bdb_attribute: cannot find entry (%s)\n",
  99                                 entry_ndn->bv_val ));
 100 #else
 101                         Debug( LDAP_DEBUG_ACL,
 102                                 "=> bdb_attribute: cannot find entry: \"%s\"\n",
 103                                         entry_ndn->bv_val, 0, 0 );
 104 #endif
 105                         return LDAP_NO_SUCH_OBJECT;
 106                 }
 107
 108 #ifdef NEW_LOGGING
 109                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
 110                         "bdb_attribute: found entry (%s)\n",
 111                         entry_ndn->bv_val ));
 112 #else
 113                 Debug( LDAP_DEBUG_ACL,
 114                         "=> bdb_attribute: found entry: \"%s\"\n",
 115                         entry_ndn->bv_val, 0, 0 );
 116 #endif
 117         }
 118
 119 #ifdef BDB_ALIASES
 120         /* find attribute values */
 121         if( is_entry_alias( e ) ) {
 122 #ifdef NEW_LOGGING
 123                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 124                         "bdb_attribute: entry (%s) is an alias\n", e->e_dn ));
 125 #else
 126                 Debug( LDAP_DEBUG_ACL,
 127                         "<= bdb_attribute: entry is an alias\n", 0, 0, 0 );
 128 #endif
 129                 rc = LDAP_ALIAS_PROBLEM;
 130                 goto return_results;
 131         }
 132 #endif
 133
 134         if( is_entry_referral( e ) ) {
 135 #ifdef NEW_LOGGING
 136                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 137                         "bdb_attribute: entry (%s) is a referral.\n", e->e_dn ));
 138 #else
 139                 Debug( LDAP_DEBUG_ACL,
 140                         "<= bdb_attribute: entry is a referral\n", 0, 0, 0 );
 141 #endif
 142                 rc = LDAP_REFERRAL;
 143                 goto return_results;
 144         }
 145
 146         if (conn != NULL && op != NULL
 147                 && access_allowed( be, conn, op, e, slap_schema.si_ad_entry,
 148                         NULL, ACL_READ, &acl_state ) == 0 )
 149         {
 150                 rc = LDAP_INSUFFICIENT_ACCESS;
 151                 goto return_results;
 152         }
 153
 154         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 155 #ifdef NEW_LOGGING
 156                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 157                         "bdb_attribute: failed to find %s.\n", entry_at_name ));
 158 #else
 159                 Debug( LDAP_DEBUG_ACL,
 160                         "<= bdb_attribute: failed to find %s\n",
 161                         entry_at_name, 0, 0 );
 162 #endif
 163                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 164                 goto return_results;
 165         }
 166
 167         if (conn != NULL && op != NULL
 168                 && access_allowed( be, conn, op, e, entry_at, NULL, ACL_READ,
 169                            &acl_state ) == 0 )
 170         {
 171                 rc = LDAP_INSUFFICIENT_ACCESS;
 172                 goto return_results;
 173         }
 174
 175         for ( i = 0; attr->a_vals[i].bv_val != NULL; i++ ) {
 176                 /* count them */
 177         }
 178
 179         v = (BerVarray) ch_malloc( sizeof(struct berval) * (i+1) );
 180
 181         for ( i=0, j=0; attr->a_vals[i].bv_val != NULL; i++ ) {
 182                 if( conn != NULL
 183                         && op != NULL
 184                         && access_allowed(be, conn, op, e, entry_at,
 185                                 &attr->a_vals[i], ACL_READ, &acl_state ) == 0)
 186                 {
 187                         continue;
 188                 }
 189                 ber_dupbv( &v[j], &attr->a_vals[i] );
 190
 191                 if( v[j].bv_val != NULL ) j++;
 192         }
 193
 194         if( j == 0 ) {
 195                 ch_free( v );
 196                 *vals = NULL;
 197                 rc = LDAP_INSUFFICIENT_ACCESS;
 198         } else {
 199                 v[j].bv_val = NULL;
 200                 v[j].bv_len = 0;
 201                 *vals = v;
 202                 rc = LDAP_SUCCESS;
 203         }
 204
 205 return_results:
 206         if( target != e ) {
 207                 /* free entry */
 208                 bdb_cache_return_entry_r(&bdb->bi_cache, e);
 209         }
 210
 211 #ifdef NEW_LOGGING
 212         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 213                 "bdb_attribute: rc=%d nvals=%d.\n",
 214                 rc, j ));
 215 #else
 216         Debug( LDAP_DEBUG_TRACE,
 217                 "bdb_attribute: rc=%d nvals=%d\n",
 218                 rc, j, 0 );
 219 #endif
 220         return(rc);
 221 }