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 = (struct bdb_op_info *) op->o_private;
  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( boi != NULL && be == boi->boi_bdb ) {
  64                 txn = boi->boi_txn;
  65         }
  66
  67         if (target != NULL && dn_match(&target->e_nname, entry_ndn)) {
  68                 /* we already have a LOCKED copy of the entry */
  69                 e = target;
  70 #ifdef NEW_LOGGING
  71                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  72                         "bdb_attribute: target is LOCKED (%s)\n",
  73                         entry_ndn->bv_val ));
  74 #else
  75                 Debug( LDAP_DEBUG_ARGS,
  76                         "=> bdb_attribute: target is entry: \"%s\"\n",
  77                         entry_ndn->bv_val, 0, 0 );
  78 #endif
  79
  80
  81         } else {
  82                 /* can we find entry */
  83                 rc = bdb_dn2entry_r( be, NULL, entry_ndn, &e, NULL, 0 );
  84                 switch( rc ) {
  85                 case DB_NOTFOUND:
  86                 case 0:
  87                         break;
  88                 default:
  89                         if( txn != NULL ) {
  90                                 boi->boi_err = rc;
  91                         }
  92                         return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
  93                 }
  94                 if (e == NULL) {
  95 #ifdef NEW_LOGGING
  96                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  97                                 "bdb_attribute: cannot find entry (%s)\n",
  98                                 entry_ndn->bv_val ));
  99 #else
 100                         Debug( LDAP_DEBUG_ACL,
 101                                 "=> bdb_attribute: cannot find entry: \"%s\"\n",
 102                                         entry_ndn->bv_val, 0, 0 );
 103 #endif
 104                         return LDAP_NO_SUCH_OBJECT;
 105                 }
 106
 107 #ifdef NEW_LOGGING
 108                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
 109                         "bdb_attribute: found entry (%s)\n",
 110                         entry_ndn->bv_val ));
 111 #else
 112                 Debug( LDAP_DEBUG_ACL,
 113                         "=> bdb_attribute: found entry: \"%s\"\n",
 114                         entry_ndn->bv_val, 0, 0 );
 115 #endif
 116         }
 117
 118 #ifdef BDB_ALIASES
 119         /* find attribute values */
 120         if( is_entry_alias( e ) ) {
 121 #ifdef NEW_LOGGING
 122                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 123                         "bdb_attribute: entry (%s) is an alias\n", e->e_dn ));
 124 #else
 125                 Debug( LDAP_DEBUG_ACL,
 126                         "<= bdb_attribute: entry is an alias\n", 0, 0, 0 );
 127 #endif
 128                 rc = LDAP_ALIAS_PROBLEM;
 129                 goto return_results;
 130         }
 131 #endif
 132
 133         if( is_entry_referral( e ) ) {
 134 #ifdef NEW_LOGGING
 135                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 136                         "bdb_attribute: entry (%s) is a referral.\n", e->e_dn ));
 137 #else
 138                 Debug( LDAP_DEBUG_ACL,
 139                         "<= bdb_attribute: entry is a referral\n", 0, 0, 0 );
 140 #endif
 141                 rc = LDAP_REFERRAL;
 142                 goto return_results;
 143         }
 144
 145         if (conn != NULL && op != NULL
 146                 && access_allowed( be, conn, op, e, slap_schema.si_ad_entry,
 147                         NULL, ACL_READ, &acl_state ) == 0 )
 148         {
 149                 rc = LDAP_INSUFFICIENT_ACCESS;
 150                 goto return_results;
 151         }
 152
 153         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 154 #ifdef NEW_LOGGING
 155                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 156                         "bdb_attribute: failed to find %s.\n", entry_at_name ));
 157 #else
 158                 Debug( LDAP_DEBUG_ACL,
 159                         "<= bdb_attribute: failed to find %s\n",
 160                         entry_at_name, 0, 0 );
 161 #endif
 162                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 163                 goto return_results;
 164         }
 165
 166         if (conn != NULL && op != NULL
 167                 && access_allowed( be, conn, op, e, entry_at, NULL, ACL_READ,
 168                            &acl_state ) == 0 )
 169         {
 170                 rc = LDAP_INSUFFICIENT_ACCESS;
 171                 goto return_results;
 172         }
 173
 174         for ( i = 0; attr->a_vals[i].bv_val != NULL; i++ ) {
 175                 /* count them */
 176         }
 177
 178         v = (BerVarray) ch_malloc( sizeof(struct berval) * (i+1) );
 179
 180         for ( i=0, j=0; attr->a_vals[i].bv_val != NULL; i++ ) {
 181                 if( conn != NULL
 182                         && op != NULL
 183                         && access_allowed(be, conn, op, e, entry_at,
 184                                 &attr->a_vals[i], ACL_READ, &acl_state ) == 0)
 185                 {
 186                         continue;
 187                 }
 188                 ber_dupbv( &v[j], &attr->a_vals[i] );
 189
 190                 if( v[j].bv_val != NULL ) j++;
 191         }
 192
 193         if( j == 0 ) {
 194                 ch_free( v );
 195                 *vals = NULL;
 196                 rc = LDAP_INSUFFICIENT_ACCESS;
 197         } else {
 198                 v[j].bv_val = NULL;
 199                 v[j].bv_len = 0;
 200                 *vals = v;
 201                 rc = LDAP_SUCCESS;
 202         }
 203
 204 return_results:
 205         if( target != e ) {
 206                 /* free entry */
 207                 bdb_cache_return_entry_r(&bdb->bi_cache, e);
 208         }
 209
 210 #ifdef NEW_LOGGING
 211         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 212                 "bdb_attribute: rc=%d nvals=%d.\n",
 213                 rc, j ));
 214 #else
 215         Debug( LDAP_DEBUG_TRACE,
 216                 "bdb_attribute: rc=%d nvals=%d\n",
 217                 rc, j, 0 );
 218 #endif
 219         return(rc);
 220 }