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/** @file
The implementation of match policy entry function in IpSecConfig application.
Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "IpSecConfig.h"
#include "Indexer.h"
#include "Match.h"
/**
Private function to validate a buffer that should be filled with zero.
@param[in] Memory The pointer to the buffer.
@param[in] Size The size of the buffer.
@retval TRUE The memory is filled with zero.
@retval FALSE The memory isn't filled with zero.
**/
BOOLEAN
IsMemoryZero (
IN VOID *Memory,
IN UINTN Size
)
{
UINTN Index;
for (Index = 0; Index < Size; Index++) {
if (*((UINT8 *) Memory + Index) != 0) {
return FALSE;
}
}
return TRUE;
}
/**
Find the matching SPD with Indexer.
@param[in] Selector The pointer to the EFI_IPSEC_SPD_SELECTOR structure.
@param[in] Data The pointer to the EFI_IPSEC_SPD_DATA structure.
@param[in] Indexer The pointer to the SPD_ENTRY_INDEXER structure.
@retval TRUE The matched SPD is found.
@retval FALSE The matched SPD is not found.
**/
BOOLEAN
MatchSpdEntry (
IN EFI_IPSEC_SPD_SELECTOR *Selector,
IN EFI_IPSEC_SPD_DATA *Data,
IN SPD_ENTRY_INDEXER *Indexer
)
{
BOOLEAN Match;
Match = FALSE;
if (Indexer->Name != NULL) {
if ((Data->Name != NULL) && (AsciiStrCmp ((CHAR8 *) Indexer->Name, (CHAR8 *) Data->Name) == 0)) {
Match = TRUE;
}
} else {
if (Indexer->Index == 0) {
Match = TRUE;
}
Indexer->Index--;
}
return Match;
}
/**
Find the matching SAD with Indexer.
@param[in] SaId The pointer to the EFI_IPSEC_SA_ID structure.
@param[in] Data The pointer to the EFI_IPSEC_SA_DATA structure.
@param[in] Indexer The pointer to the SPD_ENTRY_INDEXER structure.
@retval TRUE The matched SAD is found.
@retval FALSE The matched SAD is not found.
**/
BOOLEAN
MatchSadEntry (
IN EFI_IPSEC_SA_ID *SaId,
IN EFI_IPSEC_SA_DATA *Data,
IN SAD_ENTRY_INDEXER *Indexer
)
{
BOOLEAN Match;
Match = FALSE;
if (!IsMemoryZero (&Indexer->SaId, sizeof (EFI_IPSEC_SA_ID))) {
Match = (BOOLEAN) (CompareMem (&Indexer->SaId, SaId, sizeof (EFI_IPSEC_SA_ID)) == 0);
} else {
if (Indexer->Index == 0) {
Match = TRUE;
}
Indexer->Index--;
}
return Match;
}
/**
Find the matching PAD with Indexer.
@param[in] PadId The pointer to the EFI_IPSEC_PAD_ID structure.
@param[in] Data The pointer to the EFI_IPSEC_PAD_DATA structure.
@param[in] Indexer The pointer to the SPD_ENTRY_INDEXER structure.
@retval TRUE The matched PAD is found.
@retval FALSE The matched PAD is not found.
**/
BOOLEAN
MatchPadEntry (
IN EFI_IPSEC_PAD_ID *PadId,
IN EFI_IPSEC_PAD_DATA *Data,
IN PAD_ENTRY_INDEXER *Indexer
)
{
BOOLEAN Match;
Match = FALSE;
if (!IsMemoryZero (&Indexer->PadId, sizeof (EFI_IPSEC_PAD_ID))) {
Match = (BOOLEAN) ((Indexer->PadId.PeerIdValid == PadId->PeerIdValid) &&
((PadId->PeerIdValid &&
(StrCmp (
(CONST CHAR16 *) Indexer->PadId.Id.PeerId,
(CONST CHAR16 *) PadId->Id.PeerId
) == 0)) ||
((!PadId->PeerIdValid) &&
(Indexer->PadId.Id.IpAddress.PrefixLength == PadId->Id.IpAddress.PrefixLength) &&
(CompareMem (
&Indexer->PadId.Id.IpAddress.Address,
&PadId->Id.IpAddress.Address,
sizeof (EFI_IP_ADDRESS)
) == 0))));
} else {
if (Indexer->Index == 0) {
Match = TRUE;
}
Indexer->Index--;
}
return Match;
}
MATCH_POLICY_ENTRY mMatchPolicyEntry[] = {
(MATCH_POLICY_ENTRY) MatchSpdEntry,
(MATCH_POLICY_ENTRY) MatchSadEntry,
(MATCH_POLICY_ENTRY) MatchPadEntry
};
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