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         BerVarray *vals )
  32 {
  33         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  34         Entry        *e;
  35         int          rc;
  36         Attribute   *attr;
  37         BerVarray v;
  38         const char *entry_at_name = entry_at->ad_cname.bv_val;
  39         struct berval *iv, *jv;
  40         AccessControlState acl_state = ACL_STATE_INIT;
  41
  42 #ifdef NEW_LOGGING
  43         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  44                 "ldbm_back_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
  45         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  46                 "ldbm_back_attribute: at: \"%s\"\n", entry_at_name));
  47         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  48                 "ldbm_back_attribute: tr dn: \"%s\"\n",
  49                 target ? target->e_ndn : "" ));
  50 #else
  51         Debug( LDAP_DEBUG_ARGS,
  52                 "=> ldbm_back_attribute: gr dn: \"%s\"\n",
  53                 entry_ndn->bv_val, 0, 0 );
  54         Debug( LDAP_DEBUG_ARGS,
  55                 "=> ldbm_back_attribute: at: \"%s\"\n",
  56                 entry_at_name, 0, 0 );
  57
  58         Debug( LDAP_DEBUG_ARGS,
  59                 "=> ldbm_back_attribute: tr dn: \"%s\"\n",
  60                 target ? target->e_ndn : "", 0, 0 );
  61 #endif
  62
  63         if (target != NULL && dn_match( &target->e_nname, entry_ndn) ) {
  64                 /* we already have a LOCKED copy of the entry */
  65                 e = target;
  66 #ifdef NEW_LOGGING
  67                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  68                         "ldbm_back_attribute: target is LOCKED (%s)\n",
  69                         entry_ndn->bv_val ));
  70 #else
  71                 Debug( LDAP_DEBUG_ARGS,
  72                         "=> ldbm_back_attribute: target is entry: \"%s\"\n",
  73                         entry_ndn->bv_val, 0, 0 );
  74 #endif
  75
  76
  77         } else {
  78                 /* can we find entry with reader lock */
  79                 if ((e = dn2entry_r(be, entry_ndn, NULL )) == NULL) {
  80 #ifdef NEW_LOGGING
  81                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  82                                 "ldbm_back_attribute: cannot find entry (%s)\n",
  83                                 entry_ndn->bv_val ));
  84 #else
  85                         Debug( LDAP_DEBUG_ACL,
  86                                 "=> ldbm_back_attribute: cannot find entry: \"%s\"\n",
  87                                         entry_ndn->bv_val, 0, 0 );
  88 #endif
  89
  90                         return LDAP_NO_SUCH_OBJECT;
  91                 }
  92
  93 #ifdef NEW_LOGGING
  94                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
  95                         "ldbm_back_attribute: found entry (%s)\n",
  96                         entry_ndn->bv_val ));
  97 #else
  98                 Debug( LDAP_DEBUG_ACL,
  99                         "=> ldbm_back_attribute: found entry: \"%s\"\n",
 100                         entry_ndn->bv_val, 0, 0 );
 101 #endif
 102
 103     }
 104
 105         /* find attribute values */
 106
 107         if( is_entry_alias( e ) ) {
 108 #ifdef NEW_LOGGING
 109                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 110                         "ldbm_back_attribute: entry (%s) is an alias\n", e->e_dn ));
 111 #else
 112                 Debug( LDAP_DEBUG_ACL,
 113                         "<= ldbm_back_attribute: entry is an alias\n", 0, 0, 0 );
 114 #endif
 115
 116                 rc = LDAP_ALIAS_PROBLEM;
 117                 goto return_results;
 118         }
 119
 120         if( is_entry_referral( e ) ) {
 121 #ifdef NEW_LOGGING
 122                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 123                         "ldbm_back_attribute: entry (%s) is a referral.\n", e->e_dn ));
 124 #else
 125                 Debug( LDAP_DEBUG_ACL,
 126                         "<= ldbm_back_attribute: entry is an referral\n", 0, 0, 0 );
 127 #endif
 128
 129                 rc = LDAP_REFERRAL;
 130                 goto return_results;
 131         }
 132
 133         if (conn != NULL && op != NULL
 134                 && access_allowed( be, conn, op, e, slap_schema.si_ad_entry,
 135                         NULL, ACL_READ, NULL ) == 0)
 136         {
 137                 rc = LDAP_INSUFFICIENT_ACCESS;
 138                 goto return_results;
 139         }
 140
 141         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 142 #ifdef NEW_LOGGING
 143                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 144                         "ldbm_back_attribute: failed to find %s.\n", entry_at_name ));
 145 #else
 146                 Debug( LDAP_DEBUG_ACL,
 147                         "<= ldbm_back_attribute: failed to find %s\n",
 148                         entry_at_name, 0, 0 );
 149 #endif
 150
 151                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 152                 goto return_results;
 153         }
 154
 155         if (conn != NULL && op != NULL
 156                 && access_allowed( be, conn, op, e, entry_at, NULL,
 157                         ACL_READ, &acl_state ) == 0)
 158         {
 159                 rc = LDAP_INSUFFICIENT_ACCESS;
 160                 goto return_results;
 161         }
 162
 163         for ( iv = attr->a_vals; iv->bv_val != NULL; iv++ ) {
 164                 /* count them */
 165         }
 166
 167         v = (BerVarray) ch_malloc( sizeof(struct berval) * ((iv - attr->a_vals)+1) );
 168
 169         for ( iv=attr->a_vals, jv=v; iv->bv_val; iv++ ) {
 170                 if( conn != NULL
 171                         && op != NULL
 172                         && access_allowed( be, conn, op, e, entry_at,
 173                                 iv, ACL_READ, &acl_state ) == 0)
 174                 {
 175                         continue;
 176                 }
 177                 ber_dupbv( jv, iv );
 178
 179                 if( jv->bv_val != NULL ) jv++;
 180         }
 181
 182         if( jv == v ) {
 183                 ch_free( v );
 184                 *vals = NULL;
 185                 rc = LDAP_INSUFFICIENT_ACCESS;
 186         } else {
 187                 jv->bv_val = NULL;
 188                 *vals = v;
 189                 rc = LDAP_SUCCESS;
 190         }
 191
 192 return_results:
 193         if( target != e ) {
 194                 /* free entry and reader lock */
 195                 cache_return_entry_r( &li->li_cache, e );
 196         }
 197
 198 #ifdef NEW_LOGGING
 199         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 200                    "ldbm_back_attribute: rc=%d nvals=%d.\n",
 201                    rc, jv - v ));
 202 #else
 203         Debug( LDAP_DEBUG_TRACE,
 204                 "ldbm_back_attribute: rc=%d nvals=%d\n",
 205                 rc, jv - v, 0 );
 206 #endif
 207
 208         return(rc);
 209 }
 210