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 1998-2002 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-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         struct berval   *entry_ndn,
  30         AttributeDescription *entry_at,
  31         BVarray *vals )
  32 {
  33         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  34         Entry        *e;
  35         int          rc;
  36         Attribute   *attr;
  37         BVarray v;
  38         const char *entry_at_name = entry_at->ad_cname.bv_val;
  39         struct berval *iv, *jv;
  40
  41 #ifdef NEW_LOGGING
  42         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  43                 "ldbm_back_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
  44         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  45                 "ldbm_back_attribute: at: \"%s\"\n", entry_at_name));
  46         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  47                 "ldbm_back_attribute: tr dn: \"%s\"\n",
  48                 target ? target->e_ndn : "" ));
  49 #else
  50         Debug( LDAP_DEBUG_ARGS,
  51                 "=> ldbm_back_attribute: gr dn: \"%s\"\n",
  52                 entry_ndn->bv_val, 0, 0 );
  53         Debug( LDAP_DEBUG_ARGS,
  54                 "=> ldbm_back_attribute: at: \"%s\"\n",
  55                 entry_at_name, 0, 0 );
  56
  57         Debug( LDAP_DEBUG_ARGS,
  58                 "=> ldbm_back_attribute: tr dn: \"%s\"\n",
  59                 target ? target->e_ndn : "", 0, 0 );
  60 #endif
  61
  62         if (target != NULL && strcmp(target->e_ndn, entry_ndn->bv_val) == 0) {
  63                 /* we already have a LOCKED copy of the entry */
  64                 e = target;
  65 #ifdef NEW_LOGGING
  66                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  67                         "ldbm_back_attribute: target is LOCKED (%s)\n",
  68                         entry_ndn->bv_val ));
  69 #else
  70                 Debug( LDAP_DEBUG_ARGS,
  71                         "=> ldbm_back_attribute: target is entry: \"%s\"\n",
  72                         entry_ndn->bv_val, 0, 0 );
  73 #endif
  74
  75
  76         } else {
  77                 /* can we find entry with reader lock */
  78                 if ((e = dn2entry_r(be, entry_ndn, NULL )) == NULL) {
  79 #ifdef NEW_LOGGING
  80                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  81                                 "ldbm_back_attribute: cannot find entry (%s)\n",
  82                                 entry_ndn->bv_val ));
  83 #else
  84                         Debug( LDAP_DEBUG_ACL,
  85                                 "=> ldbm_back_attribute: cannot find entry: \"%s\"\n",
  86                                         entry_ndn->bv_val, 0, 0 );
  87 #endif
  88
  89                         return LDAP_NO_SUCH_OBJECT;
  90                 }
  91
  92 #ifdef NEW_LOGGING
  93                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  94                         "ldbm_back_attribute: found entry (%s)\n",
  95                         entry_ndn->bv_val ));
  96 #else
  97                 Debug( LDAP_DEBUG_ACL,
  98                         "=> ldbm_back_attribute: found entry: \"%s\"\n",
  99                         entry_ndn->bv_val, 0, 0 );
 100 #endif
 101
 102     }
 103
 104         /* find attribute values */
 105
 106         if( is_entry_alias( e ) ) {
 107 #ifdef NEW_LOGGING
 108                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 109                         "ldbm_back_attribute: entry (%s) is an alias\n", e->e_dn ));
 110 #else
 111                 Debug( LDAP_DEBUG_ACL,
 112                         "<= ldbm_back_attribute: entry is an alias\n", 0, 0, 0 );
 113 #endif
 114
 115                 rc = LDAP_ALIAS_PROBLEM;
 116                 goto return_results;
 117         }
 118
 119         if( is_entry_referral( e ) ) {
 120 #ifdef NEW_LOGGING
 121                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 122                         "ldbm_back_attribute: entry (%s) is a referral.\n", e->e_dn ));
 123 #else
 124                 Debug( LDAP_DEBUG_ACL,
 125                         "<= ldbm_back_attribute: entry is an referral\n", 0, 0, 0 );
 126 #endif
 127
 128                 rc = LDAP_REFERRAL;
 129                 goto return_results;
 130         }
 131
 132         if (conn != NULL && op != NULL
 133                 && access_allowed(be, conn, op, e, slap_schema.si_ad_entry,
 134                         NULL, ACL_READ) == 0)
 135         {
 136                 rc = LDAP_INSUFFICIENT_ACCESS;
 137                 goto return_results;
 138         }
 139
 140         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 141 #ifdef NEW_LOGGING
 142                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 143                         "ldbm_back_attribute: failed to find %s.\n", entry_at_name ));
 144 #else
 145                 Debug( LDAP_DEBUG_ACL,
 146                         "<= ldbm_back_attribute: failed to find %s\n",
 147                         entry_at_name, 0, 0 );
 148 #endif
 149
 150                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 151                 goto return_results;
 152         }
 153
 154         if (conn != NULL && op != NULL
 155                 && access_allowed(be, conn, op, e, entry_at, NULL, ACL_READ) == 0)
 156         {
 157                 rc = LDAP_INSUFFICIENT_ACCESS;
 158                 goto return_results;
 159         }
 160
 161         for ( iv = attr->a_vals; iv->bv_val != NULL; iv++ ) {
 162                 /* count them */
 163         }
 164
 165         v = (BVarray) ch_malloc( sizeof(struct berval) * ((iv - attr->a_vals)+1) );
 166
 167         for ( iv=attr->a_vals, jv=v; iv->bv_val; iv++ ) {
 168                 if( conn != NULL
 169                         && op != NULL
 170                         && access_allowed(be, conn, op, e, entry_at,
 171                                 iv, ACL_READ) == 0)
 172                 {
 173                         continue;
 174                 }
 175                 ber_dupbv( jv, iv );
 176
 177                 if( jv->bv_val != NULL ) jv++;
 178         }
 179
 180         if( jv == v ) {
 181                 ch_free( v );
 182                 *vals = NULL;
 183                 rc = LDAP_INSUFFICIENT_ACCESS;
 184         } else {
 185                 jv->bv_val = NULL;
 186                 *vals = v;
 187                 rc = LDAP_SUCCESS;
 188         }
 189
 190 return_results:
 191         if( target != e ) {
 192                 /* free entry and reader lock */
 193                 cache_return_entry_r( &li->li_cache, e );
 194         }
 195
 196 #ifdef NEW_LOGGING
 197         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 198                    "ldbm_back_attribute: rc=%d nvals=%d.\n",
 199                    rc, jv - v ));
 200 #else
 201         Debug( LDAP_DEBUG_TRACE,
 202                 "ldbm_back_attribute: rc=%d nvals=%d\n",
 203                 rc, jv - v, 0 );
 204 #endif
 205
 206         return(rc);
 207 }
 208