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 1998-2000 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-bdb.h"
  17 #include "proto-bdb.h"
  18
  19
  20 /* return LDAP_SUCCESS IFF we can retrieve the attributes
  21  * of entry with e_ndn
  22  */
  23 int
  24 bdb_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 bdbinfo *li = (struct bdbinfo *) be->be_private;
  34         Entry *e;
  35         int     i, j, rc;
  36         Attribute *attr;
  37         BVarray 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                 "bdb_attribute: gr dn: \"%s\"\n", entry_ndn->bv_val ));
  43         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  44                 "bdb_attribute: at: \"%s\"\n", entry_at_name));
  45         LDAP_LOG(( "backend", LDAP_LEVEL_ARGS,
  46                 "bdb_attribute: tr dn: \"%s\"\n",
  47                 target ? target->e_ndn : "" ));
  48 #else
  49         Debug( LDAP_DEBUG_ARGS,
  50                 "=> bdb_attribute: gr dn: \"%s\"\n",
  51                 entry_ndn->bv_val, 0, 0 );
  52         Debug( LDAP_DEBUG_ARGS,
  53                 "=> bdb_attribute: at: \"%s\"\n",
  54                 entry_at_name, 0, 0 );
  55
  56         Debug( LDAP_DEBUG_ARGS,
  57                 "=> bdb_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->bv_val) == 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                         "bdb_attribute: target is LOCKED (%s)\n",
  67                         entry_ndn->bv_val ));
  68 #else
  69                 Debug( LDAP_DEBUG_ARGS,
  70                         "=> bdb_attribute: target is entry: \"%s\"\n",
  71                         entry_ndn->bv_val, 0, 0 );
  72 #endif
  73
  74
  75         } else {
  76                 /* can we find entry */
  77                 rc = bdb_dn2entry( be, NULL, entry_ndn, &e, NULL, 0 );
  78                 switch( rc ) {
  79                 case DB_NOTFOUND:
  80                 case 0:
  81                         break;
  82                 default:
  83                         return LDAP_OTHER;
  84                 }
  85                 if (e == NULL) {
  86 #ifdef NEW_LOGGING
  87                         LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  88                                 "bdb_attribute: cannot find entry (%s)\n",
  89                                 entry_ndn->bv_val ));
  90 #else
  91                         Debug( LDAP_DEBUG_ACL,
  92                                 "=> bdb_attribute: cannot find entry: \"%s\"\n",
  93                                         entry_ndn->bv_val, 0, 0 );
  94 #endif
  95                         return LDAP_NO_SUCH_OBJECT;
  96                 }
  97
  98 #ifdef NEW_LOGGING
  99                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
 100                         "bdb_attribute: found entry (%s)\n",
 101                         entry_ndn->bv_val ));
 102 #else
 103                 Debug( LDAP_DEBUG_ACL,
 104                         "=> bdb_attribute: found entry: \"%s\"\n",
 105                         entry_ndn->bv_val, 0, 0 );
 106 #endif
 107         }
 108
 109         /* find attribute values */
 110         if( is_entry_alias( e ) ) {
 111 #ifdef NEW_LOGGING
 112                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 113                         "bdb_attribute: entry (%s) is an alias\n", e->e_dn ));
 114 #else
 115                 Debug( LDAP_DEBUG_ACL,
 116                         "<= bdb_attribute: entry is an alias\n", 0, 0, 0 );
 117 #endif
 118                 rc = LDAP_ALIAS_PROBLEM;
 119                 goto return_results;
 120         }
 121
 122         if( is_entry_referral( e ) ) {
 123 #ifdef NEW_LOGGING
 124                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 125                         "bdb_attribute: entry (%s) is a referral.\n", e->e_dn ));
 126 #else
 127                 Debug( LDAP_DEBUG_ACL,
 128                         "<= bdb_attribute: entry is a referral\n", 0, 0, 0 );
 129 #endif
 130                 rc = LDAP_REFERRAL;
 131                 goto return_results;
 132         }
 133
 134         if (conn != NULL && op != NULL
 135                 && access_allowed(be, conn, op, e, slap_schema.si_ad_entry,
 136                         NULL, ACL_READ) == 0)
 137         {
 138                 rc = LDAP_INSUFFICIENT_ACCESS;
 139                 goto return_results;
 140         }
 141
 142         if ((attr = attr_find(e->e_attrs, entry_at)) == NULL) {
 143 #ifdef NEW_LOGGING
 144                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
 145                         "bdb_attribute: failed to find %s.\n", entry_at_name ));
 146 #else
 147                 Debug( LDAP_DEBUG_ACL,
 148                         "<= bdb_attribute: failed to find %s\n",
 149                         entry_at_name, 0, 0 );
 150 #endif
 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, ACL_READ) == 0)
 157         {
 158                 rc = LDAP_INSUFFICIENT_ACCESS;
 159                 goto return_results;
 160         }
 161
 162         for ( i = 0; attr->a_vals[i].bv_val != NULL; i++ ) {
 163                 /* count them */
 164         }
 165
 166         v = (BVarray) ch_malloc( sizeof(struct berval) * (i+1) );
 167
 168         for ( i=0, j=0; attr->a_vals[i].bv_val != NULL; i++ ) {
 169                 if( conn != NULL
 170                         && op != NULL
 171                         && access_allowed(be, conn, op, e, entry_at,
 172                                 &attr->a_vals[i], ACL_READ) == 0)
 173                 {
 174                         continue;
 175                 }
 176                 ber_dupbv( &v[j], &attr->a_vals[i] );
 177
 178                 if( v[j].bv_val != NULL ) j++;
 179         }
 180
 181         if( j == 0 ) {
 182                 ch_free( v );
 183                 *vals = NULL;
 184                 rc = LDAP_INSUFFICIENT_ACCESS;
 185         } else {
 186                 v[j].bv_val = NULL;
 187                 v[j].bv_len = 0;
 188                 *vals = v;
 189                 rc = LDAP_SUCCESS;
 190         }
 191
 192 return_results:
 193         if( target != e ) {
 194                 /* free entry */
 195                 bdb_entry_return( be, e );
 196         }
 197
 198 #ifdef NEW_LOGGING
 199         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
 200                 "bdb_attribute: rc=%d nvals=%d.\n",
 201                 rc, j ));
 202 #else
 203         Debug( LDAP_DEBUG_TRACE,
 204                 "bdb_attribute: rc=%d nvals=%d\n",
 205                 rc, j, 0 );
 206 #endif
 207         return(rc);
 208 }