]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/compare.c
ITS#2888 don't return LDAP_SIZELIMIT_EXCEEDED prematurely
[openldap] / servers / slapd / compare.c
index 544b7ca1cd8c5b8350a7de4e112d806963ac04d0..fdfccea5193fe8ad345aee050ae58846b595ac8a 100644 (file)
@@ -1,5 +1,18 @@
-/*
- * Copyright (c) 1995 Regents of the University of Michigan.
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2003 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms are permitted
 #include "portable.h"
 
 #include <stdio.h>
-
 #include <ac/socket.h>
+#include <ac/string.h>
 
+#include "ldap_pvt.h"
 #include "slap.h"
+#ifdef LDAP_SLAPI
+#include "slapi.h"
+#endif
+
+static int compare_entry(
+       Operation *op,
+       Entry *e,
+       AttributeAssertion *ava );
 
 int
 do_compare(
-    Connection *conn,
-    Operation  *op
+    Operation  *op,
+    SlapReply  *rs
 )
 {
-       char    *ndn;
-       Ava     ava;
-       Backend *be;
-       int rc = LDAP_SUCCESS;
+       Entry *entry = NULL;
+       struct berval dn = { 0, NULL };
+       struct berval desc = { 0, NULL };
+       struct berval value = { 0, NULL };
+       AttributeAssertion ava = { NULL, { 0, NULL } };
+       int manageDSAit;
 
-       Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
-
-       if( op->o_bind_in_progress ) {
-               Debug( LDAP_DEBUG_ANY, "do_compare: SASL bind in progress.\n",
-                       0, 0, 0 );
-               send_ldap_result( conn, op, LDAP_SASL_BIND_IN_PROGRESS, NULL,
-                   "SASL bind in progress" );
-               return LDAP_SASL_BIND_IN_PROGRESS;
-       }
+       ava.aa_desc = NULL;
 
+#ifdef NEW_LOGGING
+       LDAP_LOG( OPERATION, ENTRY, "do_compare: conn %d\n", op->o_connid, 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
+#endif
        /*
         * Parse the compare request.  It looks like this:
         *
@@ -51,58 +72,280 @@ do_compare(
         *      }
         */
 
-       if ( ber_scanf( op->o_ber, "{a{ao}}", &ndn, &ava.ava_type,
-           &ava.ava_value ) == LBER_ERROR ) {
+       if ( ber_scanf( op->o_ber, "{m" /*}*/, &dn ) == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ERR, 
+                       "do_compare: conn %d  ber_scanf failed\n", op->o_connid, 0, 0 );
+#else
                Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
-               send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL, "" );
-               return rc;
+#endif
+               send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+               return SLAPD_DISCONNECT;
+       }
+
+       if ( ber_scanf( op->o_ber, "{mm}", &desc, &value ) == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ERR, 
+                       "do_compare: conn %d  get ava failed\n", op->o_connid, 0, 0 );
+#else
+               Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
+#endif
+               send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+               return SLAPD_DISCONNECT;
        }
 
-#ifdef GET_CTRLS
-       if( ( rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
-               free( ndn );
-               ava_free( &ava, 0 );
+       if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ERR, 
+                       "do_compare: conn %d  ber_scanf failed\n", op->o_connid, 0, 0 );
+#else
+               Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
+#endif
+               send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+               return SLAPD_DISCONNECT;
+       }
+
+       if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, INFO, 
+                       "do_compare: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
+#else
                Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
-               return rc;
+#endif
+               goto cleanup;
        } 
+
+       rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
+       if( rs->sr_err != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, INFO, 
+                       "do_compare: conn %d  invalid dn (%s)\n",
+                       op->o_connid, dn.bv_val, 0 );
+#else
+               Debug( LDAP_DEBUG_ANY,
+                       "do_compare: invalid dn (%s)\n", dn.bv_val, 0, 0 );
+#endif
+               send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
+               goto cleanup;
+       }
+
+       rs->sr_err = slap_bv2ad( &desc, &ava.aa_desc, &rs->sr_text );
+       if( rs->sr_err != LDAP_SUCCESS ) {
+               send_ldap_result( op, rs );
+               goto cleanup;
+       }
+
+       rs->sr_err = asserted_value_validate_normalize( ava.aa_desc,
+               ava.aa_desc->ad_type->sat_equality,
+               SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
+               &value, &ava.aa_value, &rs->sr_text, op->o_tmpmemctx );
+       if( rs->sr_err != LDAP_SUCCESS ) {
+               send_ldap_result( op, rs );
+               goto cleanup;
+       }
+
+       if( strcasecmp( op->o_req_ndn.bv_val, LDAP_ROOT_DSE ) == 0 ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ARGS, 
+                       "do_compare: dn (%s) attr(%s) value (%s)\n",
+                       op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
+#else
+               Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
+                       op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
 #endif
 
-       value_normalize( ava.ava_value.bv_val, attr_syntax( ava.ava_type ) );
+               Statslog( LDAP_DEBUG_STATS,
+                       "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
+                       op->o_connid, op->o_opid, op->o_req_dn.bv_val,
+                       ava.aa_desc->ad_cname.bv_val, 0 );
 
-       Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
-           ndn, ava.ava_type, ava.ava_value.bv_val );
+               if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+                       send_ldap_result( op, rs );
+                       goto cleanup;
+               }
+
+               rs->sr_err = root_dse_info( op->o_conn, &entry, &rs->sr_text );
+               if( rs->sr_err != LDAP_SUCCESS ) {
+                       send_ldap_result( op, rs );
+                       goto cleanup;
+               }
+
+       } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ARGS, 
+                       "do_compare: dn (%s) attr(%s) value (%s)\n",
+                       op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val,
+                       ava.aa_value.bv_val );
+#else
+               Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
+                       op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
+#endif
+
+               Statslog( LDAP_DEBUG_STATS,
+                       "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
+                       op->o_connid, op->o_opid, op->o_req_dn.bv_val,
+                       ava.aa_desc->ad_cname.bv_val, 0 );
+
+               if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+                       send_ldap_result( op, rs );
+                       rs->sr_err = 0;
+                       goto cleanup;
+               }
+
+               rs->sr_err = schema_info( &entry, &rs->sr_text );
+               if( rs->sr_err != LDAP_SUCCESS ) {
+                       send_ldap_result( op, rs );
+                       rs->sr_err = 0;
+                       goto cleanup;
+               }
+       }
 
-       ndn = dn_normalize_case( ndn );
+       if( entry ) {
+               rs->sr_err = compare_entry( op, entry, &ava );
+               entry_free( entry );
+
+               send_ldap_result( op, rs );
+
+               if( rs->sr_err == LDAP_COMPARE_TRUE || rs->sr_err == LDAP_COMPARE_FALSE ) {
+                       rs->sr_err = 0;
+               }
+
+               goto cleanup;
+       }
 
-       Statslog( LDAP_DEBUG_STATS, "conn=%d op=%d CMP dn=\"%s\" attr=\"%s\"\n",
-           conn->c_connid, op->o_opid, ndn, ava.ava_type, 0 );
+       manageDSAit = get_manageDSAit( op );
 
        /*
         * We could be serving multiple database backends.  Select the
         * appropriate one, or send a referral to our "referral server"
         * if we don't hold it.
         */
-       if ( (be = select_backend( ndn )) == NULL ) {
-               free( ndn );
-               ava_free( &ava, 0 );
+       if ( (op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 )) == NULL ) {
+               rs->sr_ref = referral_rewrite( default_referral,
+                       NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 
-               send_ldap_result( conn, op, rc = LDAP_PARTIAL_RESULTS, NULL,
-                   default_referral );
-               return 1;
+               rs->sr_err = LDAP_REFERRAL;
+               if (!rs->sr_ref) rs->sr_ref = default_referral;
+               send_ldap_result( op, rs );
+
+               if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
+               rs->sr_err = 0;
+               goto cleanup;
+       }
+
+       /* check restrictions */
+       if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+               send_ldap_result( op, rs );
+               goto cleanup;
+       }
+
+       /* check for referrals */
+       if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
+               goto cleanup;
        }
 
-       /* alias suffix if approp */
-       ndn = suffixAlias( ndn, op, be );
+#ifdef NEW_LOGGING
+       LDAP_LOG( OPERATION, ARGS, 
+               "do_compare: dn (%s) attr(%s) value (%s)\n",
+               op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
+#else
+       Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
+           op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
+#endif
+
+       Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
+           op->o_connid, op->o_opid, op->o_req_dn.bv_val,
+               ava.aa_desc->ad_cname.bv_val, 0 );
 
-       if ( be->be_compare ) {
-               (*be->be_compare)( be, conn, op, ndn, &ava );
+#if defined( LDAP_SLAPI )
+#define        pb      op->o_pb
+       if ( pb ) {
+               slapi_int_pblock_set_operation( pb, op );
+               slapi_pblock_set( pb, SLAPI_COMPARE_TARGET, (void *)dn.bv_val );
+               slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
+               slapi_pblock_set( pb, SLAPI_COMPARE_TYPE, (void *)desc.bv_val );
+               slapi_pblock_set( pb, SLAPI_COMPARE_VALUE, (void *)&value );
+
+               rs->sr_err = doPluginFNs( op->o_bd, SLAPI_PLUGIN_PRE_COMPARE_FN, pb );
+               if ( rs->sr_err < 0 ) {
+                       /*
+                        * A preoperation plugin failure will abort the
+                        * entire operation.
+                        */
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, INFO, "do_compare: compare preoperation plugin "
+                                       "failed\n", 0, 0, 0);
+#else
+                       Debug(LDAP_DEBUG_TRACE, "do_compare: compare preoperation plugin "
+                                       "failed.\n", 0, 0, 0);
+#endif
+                       if ( ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0 )  ||
+                                rs->sr_err == LDAP_SUCCESS ) {
+                               rs->sr_err = LDAP_OTHER;
+                       }
+                       goto cleanup;
+               }
+       }
+#endif /* defined( LDAP_SLAPI ) */
+
+       if ( op->o_bd->be_compare ) {
+               op->orc_ava = &ava;
+               op->o_bd->be_compare( op, rs );
        } else {
-               send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM, NULL,
-                   "Function not implemented" );
+               send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+                       "operation not supported within namingContext" );
+       }
+
+#if defined( LDAP_SLAPI )
+       if ( pb && doPluginFNs( op->o_bd, SLAPI_PLUGIN_POST_COMPARE_FN, pb ) < 0 ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, INFO, "do_compare: compare postoperation plugins "
+                               "failed\n", 0, 0, 0 );
+#else
+               Debug(LDAP_DEBUG_TRACE, "do_compare: compare postoperation plugins "
+                               "failed.\n", 0, 0, 0);
+#endif
+       }
+#endif /* defined( LDAP_SLAPI ) */
+
+cleanup:
+       op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
+       op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+       if ( ava.aa_value.bv_val ) op->o_tmpfree( ava.aa_value.bv_val, op->o_tmpmemctx );
+
+       return rs->sr_err;
+}
+
+static int compare_entry(
+       Operation *op,
+       Entry *e,
+       AttributeAssertion *ava )
+{
+       int rc = LDAP_NO_SUCH_ATTRIBUTE;
+       Attribute *a;
+
+       if ( ! access_allowed( op, e,
+               ava->aa_desc, &ava->aa_value, ACL_COMPARE, NULL ) )
+       {       
+               return LDAP_INSUFFICIENT_ACCESS;
        }
 
-       free( ndn );
-       ava_free( &ava, 0 );
+       for(a = attrs_find( e->e_attrs, ava->aa_desc );
+               a != NULL;
+               a = attrs_find( a->a_next, ava->aa_desc ))
+       {
+               rc = LDAP_COMPARE_FALSE;
+
+               if ( value_find_ex( ava->aa_desc,
+                       SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+                               SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+                       a->a_nvals,
+                       &ava->aa_value, op->o_tmpmemctx ) == 0 )
+               {
+                       rc = LDAP_COMPARE_TRUE;
+                       break;
+               }
+       }
 
        return rc;
 }