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 bdbinfo *li = (struct bdbinfo *) be->be_private;
  33         struct bdb_op_info *boi = (struct bdb_op_info *) op->o_private;
  34         DB_TXN *txn = NULL;
  35         Entry *e;
  36         int     i, j, rc;
  37         Attribute *attr;
  38         BerVarray v;
  39         const char *entry_at_name = entry_at->ad_cname.bv_val;
  40
  41 #ifdef NEW_LOGGING
  42         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  43                 "bdb_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
  44         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  45                 "bdb_attribute: at: \"%s\"\n", entry_at_name));
  46         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  47                 "bdb_attribute: tr dn: \"%s\"\n",
  48                 target ? target->e_ndn : "" ));
  49 #else
  50         Debug( LDAP_DEBUG_ARGS,
  51                 "=> bdb_attribute: gr dn: \"%s\"\n",
  52                 entry_ndn->bv_val, 0, 0 );
  53         Debug( LDAP_DEBUG_ARGS,
  54                 "=> bdb_attribute: at: \"%s\"\n",
  55                 entry_at_name, 0, 0 );
  56
  57         Debug( LDAP_DEBUG_ARGS,
  58                 "=> bdb_attribute: tr dn: \"%s\"\n",
  59                 target ? target->e_ndn : "", 0, 0 );
  60 #endif
  61
  62         if( boi != NULL && be == boi->boi_bdb ) {
  63                 txn = boi->boi_txn;
  64         }
  65
  66         if (target != NULL && dn_match(&target->e_nname, entry_ndn)) {
  67                 /* we already have a LOCKED copy of the entry */
  68                 e = target;
  69 #ifdef NEW_LOGGING
  70                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  71                         "bdb_attribute: target is LOCKED (%s)\n",
  72                         entry_ndn->bv_val ));
  73 #else
  74                 Debug( LDAP_DEBUG_ARGS,
  75                         "=> bdb_attribute: target is entry: \"%s\"\n",
  76                         entry_ndn->bv_val, 0, 0 );
  77 #endif
  78
  79
  80         } else {
  81                 /* can we find entry */
  82                 rc = bdb_dn2entry( be, txn, entry_ndn, &e, NULL, 0 );
  83                 switch( rc ) {
  84                 case DB_NOTFOUND:
  85                 case 0:
  86                         break;
  87                 default:
  88                         if( txn != NULL ) {
  89                                 boi->boi_err = rc;
  90                         }
  91                         return LDAP_OTHER;
  92                 }
  93                 if (e == NULL) {
  94 #ifdef NEW_LOGGING
  95                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  96                                 "bdb_attribute: cannot find entry (%s)\n",
  97                                 entry_ndn->bv_val ));
  98 #else
  99                         Debug( LDAP_DEBUG_ACL,
 100                                 "=> bdb_attribute: cannot find entry: \"%s\"\n",
 101                                         entry_ndn->bv_val, 0, 0 );
 102 #endif
 103                         return LDAP_NO_SUCH_OBJECT;
 104                 }
 105
 106 #ifdef NEW_LOGGING
 107                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
 108                         "bdb_attribute: found entry (%s)\n",
 109                         entry_ndn->bv_val ));
 110 #else
 111                 Debug( LDAP_DEBUG_ACL,
 112                         "=> bdb_attribute: found entry: \"%s\"\n",
 113                         entry_ndn->bv_val, 0, 0 );
 114 #endif
 115         }
 116
 117         /* find attribute values */
 118         if( is_entry_alias( e ) ) {
 119 #ifdef NEW_LOGGING
 120                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 121                         "bdb_attribute: entry (%s) is an alias\n", e->e_dn ));
 122 #else
 123                 Debug( LDAP_DEBUG_ACL,
 124                         "<= bdb_attribute: entry is an alias\n", 0, 0, 0 );
 125 #endif
 126                 rc = LDAP_ALIAS_PROBLEM;
 127                 goto return_results;
 128         }
 129
 130         if( is_entry_referral( e ) ) {
 131 #ifdef NEW_LOGGING
 132                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 133                         "bdb_attribute: entry (%s) is a referral.\n", e->e_dn ));
 134 #else
 135                 Debug( LDAP_DEBUG_ACL,
 136                         "<= bdb_attribute: entry is a referral\n", 0, 0, 0 );
 137 #endif
 138                 rc = LDAP_REFERRAL;
 139                 goto return_results;
 140         }
 141
 142         if (conn != NULL && op != NULL
 143                 && access_allowed(be, conn, op, e, slap_schema.si_ad_entry,
 144                         NULL, ACL_READ) == 0)
 145         {
 146                 rc = LDAP_INSUFFICIENT_ACCESS;
 147                 goto return_results;
 148         }
 149
 150         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 151 #ifdef NEW_LOGGING
 152                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 153                         "bdb_attribute: failed to find %s.\n", entry_at_name ));
 154 #else
 155                 Debug( LDAP_DEBUG_ACL,
 156                         "<= bdb_attribute: failed to find %s\n",
 157                         entry_at_name, 0, 0 );
 158 #endif
 159                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 160                 goto return_results;
 161         }
 162
 163         if (conn != NULL && op != NULL
 164                 && access_allowed(be, conn, op, e, entry_at, NULL, ACL_READ) == 0)
 165         {
 166                 rc = LDAP_INSUFFICIENT_ACCESS;
 167                 goto return_results;
 168         }
 169
 170         for ( i = 0; attr->a_vals[i].bv_val != NULL; i++ ) {
 171                 /* count them */
 172         }
 173
 174         v = (BerVarray) ch_malloc( sizeof(struct berval) * (i+1) );
 175
 176         for ( i=0, j=0; attr->a_vals[i].bv_val != NULL; i++ ) {
 177                 if( conn != NULL
 178                         && op != NULL
 179                         && access_allowed(be, conn, op, e, entry_at,
 180                                 &attr->a_vals[i], ACL_READ) == 0)
 181                 {
 182                         continue;
 183                 }
 184                 ber_dupbv( &v[j], &attr->a_vals[i] );
 185
 186                 if( v[j].bv_val != NULL ) j++;
 187         }
 188
 189         if( j == 0 ) {
 190                 ch_free( v );
 191                 *vals = NULL;
 192                 rc = LDAP_INSUFFICIENT_ACCESS;
 193         } else {
 194                 v[j].bv_val = NULL;
 195                 v[j].bv_len = 0;
 196                 *vals = v;
 197                 rc = LDAP_SUCCESS;
 198         }
 199
 200 return_results:
 201         if( target != e ) {
 202                 /* free entry */
 203                 bdb_entry_return( be, e );
 204         }
 205
 206 #ifdef NEW_LOGGING
 207         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 208                 "bdb_attribute: rc=%d nvals=%d.\n",
 209                 rc, j ));
 210 #else
 211         Debug( LDAP_DEBUG_TRACE,
 212                 "bdb_attribute: rc=%d nvals=%d\n",
 213                 rc, j, 0 );
 214 #endif
 215         return(rc);
 216 }