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

   1 /* attribute.c - ldbm backend acl attribute routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 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-ldbm.h"
  17 #include "proto-back-ldbm.h"
  18
  19
  20 /* return LDAP_SUCCESS IFF we can retrieve the attributes
  21  * of entry with e_ndn
  22  */
  23 int
  24 ldbm_back_attribute(
  25         Backend *be,
  26         Connection *conn,
  27         Operation *op,
  28         Entry   *target,
  29         const char      *entry_ndn,
  30         AttributeDescription *entry_at,
  31         struct berval ***vals )
  32 {
  33         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  34         Entry        *e;
  35         int          i, j, rc;
  36         Attribute   *attr;
  37         struct berval **v;
  38         const char *entry_at_name = entry_at->ad_cname.bv_val;
  39
  40 #ifdef NEW_LOGGING
  41         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  42                 "ldbm_back_attribute: gr dn: \"%s\"\n", entry_ndn ));
  43         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  44                 "ldbm_back_attribute: at: \"%s\"\n", entry_at_name));
  45         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  46                 "ldbm_back_attribute: tr dn: \"%s\"\n",
  47                 target ? target->e_ndn : "" ));
  48 #else
  49         Debug( LDAP_DEBUG_ARGS,
  50                 "=> ldbm_back_attribute: gr dn: \"%s\"\n",
  51                 entry_ndn, 0, 0 );
  52         Debug( LDAP_DEBUG_ARGS,
  53                 "=> ldbm_back_attribute: at: \"%s\"\n",
  54                 entry_at_name, 0, 0 );
  55
  56         Debug( LDAP_DEBUG_ARGS,
  57                 "=> ldbm_back_attribute: tr dn: \"%s\"\n",
  58                 target ? target->e_ndn : "", 0, 0 );
  59 #endif
  60
  61         if (target != NULL && strcmp(target->e_ndn, entry_ndn) == 0) {
  62                 /* we already have a LOCKED copy of the entry */
  63                 e = target;
  64 #ifdef NEW_LOGGING
  65                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  66                         "ldbm_back_attribute: target is LOCKED (%s)\n",
  67                         entry_ndn ));
  68 #else
  69                 Debug( LDAP_DEBUG_ARGS,
  70                         "=> ldbm_back_attribute: target is entry: \"%s\"\n",
  71                         entry_ndn, 0, 0 );
  72 #endif
  73
  74
  75         } else {
  76                 /* can we find entry with reader lock */
  77                 if ((e = dn2entry_r(be, entry_ndn, NULL )) == NULL) {
  78 #ifdef NEW_LOGGING
  79                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  80                                 "ldbm_back_attribute: cannot find entry (%s)\n",
  81                                 entry_ndn ));
  82 #else
  83                         Debug( LDAP_DEBUG_ACL,
  84                                 "=> ldbm_back_attribute: cannot find entry: \"%s\"\n",
  85                                         entry_ndn, 0, 0 );
  86 #endif
  87
  88                         return LDAP_NO_SUCH_OBJECT;
  89                 }
  90
  91 #ifdef NEW_LOGGING
  92                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  93                         "ldbm_back_attribute: found entry (%s)\n", entry_ndn ));
  94 #else
  95                 Debug( LDAP_DEBUG_ACL,
  96                         "=> ldbm_back_attribute: found entry: \"%s\"\n",
  97                         entry_ndn, 0, 0 );
  98 #endif
  99
 100     }
 101
 102         /* find attribute values */
 103
 104         if( is_entry_alias( e ) ) {
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 107                            "ldbm_back_attribute: entry (%s) is an alias\n", e->e_dn ));
 108 #else
 109                 Debug( LDAP_DEBUG_ACL,
 110                         "<= ldbm_back_attribute: entry is an alias\n", 0, 0, 0 );
 111 #endif
 112
 113                 rc = LDAP_ALIAS_PROBLEM;
 114                 goto return_results;
 115         }
 116
 117         if( is_entry_referral( e ) ) {
 118 #ifdef NEW_LOGGING
 119                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 120                            "ldbm_back_attribute: entry (%s) is a referral.\n", e->e_dn ));
 121 #else
 122                 Debug( LDAP_DEBUG_ACL,
 123                         "<= ldbm_back_attribute: entry is an referral\n", 0, 0, 0 );
 124 #endif
 125
 126                 rc = LDAP_REFERRAL;
 127                 goto return_results;
 128         }
 129
 130         if (conn != NULL && op != NULL
 131                 && access_allowed(be, conn, op, e, slap_schema.si_ad_entry,
 132                         NULL, ACL_READ) == 0)
 133         {
 134                 rc = LDAP_INSUFFICIENT_ACCESS;
 135                 goto return_results;
 136         }
 137
 138         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 139 #ifdef NEW_LOGGING
 140                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 141                            "ldbm_back_attribute: failed to find %s.\n", entry_at_name ));
 142 #else
 143                 Debug( LDAP_DEBUG_ACL,
 144                         "<= ldbm_back_attribute: failed to find %s\n",
 145                         entry_at_name, 0, 0 );
 146 #endif
 147
 148                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 149                 goto return_results;
 150         }
 151
 152         if (conn != NULL && op != NULL
 153                 && access_allowed(be, conn, op, e, entry_at, NULL, ACL_READ) == 0)
 154         {
 155                 rc = LDAP_INSUFFICIENT_ACCESS;
 156                 goto return_results;
 157         }
 158
 159         for ( i = 0; attr->a_vals[i] != NULL; i++ ) {
 160                 /* count them */
 161         }
 162
 163         v = (struct berval **) ch_malloc( sizeof(struct berval *) * (i+1) );
 164
 165         for ( i=0, j=0; attr->a_vals[i] != NULL; i++ ) {
 166                 if( conn != NULL
 167                         && op != NULL
 168                         && access_allowed(be, conn, op, e, entry_at,
 169                                 attr->a_vals[i], ACL_READ) == 0)
 170                 {
 171                         continue;
 172                 }
 173                 v[j] = ber_bvdup( attr->a_vals[i] );
 174
 175                 if( v[j] != NULL ) j++;
 176         }
 177
 178         if( j == 0 ) {
 179                 ch_free( v );
 180                 *vals = NULL;
 181                 rc = LDAP_INSUFFICIENT_ACCESS;
 182         } else {
 183                 v[j] = NULL;
 184                 *vals = v;
 185                 rc = LDAP_SUCCESS;
 186         }
 187
 188 return_results:
 189         if( target != e ) {
 190                 /* free entry and reader lock */
 191                 cache_return_entry_r( &li->li_cache, e );
 192         }
 193
 194 #ifdef NEW_LOGGING
 195         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 196                    "ldbm_back_attribute: rc=%d nvals=%d.\n",
 197                    rc, j ));
 198 #else
 199         Debug( LDAP_DEBUG_TRACE,
 200                 "ldbm_back_attribute: rc=%d nvals=%d\n",
 201                 rc, j, 0 );
 202 #endif
 203
 204         return(rc);
 205 }
 206