NetworkPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / NetworkPkg / Application / IpsecConfig / Match.c

/** @file\r
  The implementation of match policy entry function in IpSecConfig application.\r
\r
  Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "IpSecConfig.h"\r
#include "Indexer.h"\r
#include "Match.h"\r
\r
/**\r
  Private function to validate a buffer that should be filled with zero.\r
\r
  @param[in] Memory    The pointer to the buffer.\r
  @param[in] Size      The size of the buffer.\r
\r
  @retval TRUE     The memory is filled with zero.\r
  @retval FALSE    The memory isn't filled with zero.\r
**/\r
BOOLEAN\r
IsMemoryZero (\r
  IN VOID     *Memory,\r
  IN UINTN    Size\r
  )\r
{\r
  UINTN    Index;\r
\r
  for (Index = 0; Index < Size; Index++) {\r
    if (*((UINT8 *) Memory + Index) != 0) {\r
      return FALSE;\r
    }\r
  }\r
\r
  return TRUE;\r
}\r
\r
/**\r
  Find the matching SPD with Indexer.\r
\r
  @param[in] Selector    The pointer to the EFI_IPSEC_SPD_SELECTOR structure.\r
  @param[in] Data        The pointer to the EFI_IPSEC_SPD_DATA structure.\r
  @param[in] Indexer     The pointer to the SPD_ENTRY_INDEXER structure.\r
\r
  @retval TRUE     The matched SPD is found.\r
  @retval FALSE    The matched SPD is not found.\r
**/\r
BOOLEAN\r
MatchSpdEntry (\r
  IN EFI_IPSEC_SPD_SELECTOR    *Selector,\r
  IN EFI_IPSEC_SPD_DATA        *Data,\r
  IN SPD_ENTRY_INDEXER         *Indexer\r
  )\r
{\r
  BOOLEAN    Match;\r
\r
  Match = FALSE;\r
  if (!IsMemoryZero (Indexer->Name, MAX_PEERID_LEN)) {\r
    if ((Data->Name != NULL) && (AsciiStrCmp ((CHAR8 *) Indexer->Name, (CHAR8 *) Data->Name) == 0)) {\r
      Match = TRUE;\r
    }\r
  } else {\r
    if (Indexer->Index == 0) {\r
      Match = TRUE;\r
    }\r
\r
    Indexer->Index--;\r
  }\r
\r
  return Match;\r
}\r
\r
/**\r
  Find the matching SAD with Indexer.\r
\r
  @param[in] SaId       The pointer to the EFI_IPSEC_SA_ID structure.\r
  @param[in] Data       The pointer to the EFI_IPSEC_SA_DATA2 structure.\r
  @param[in] Indexer    The pointer to the SPD_ENTRY_INDEXER structure.\r
\r
  @retval TRUE     The matched SAD is found.\r
  @retval FALSE    The matched SAD is not found.\r
**/\r
BOOLEAN\r
MatchSadEntry (\r
  IN EFI_IPSEC_SA_ID      *SaId,\r
  IN EFI_IPSEC_SA_DATA2   *Data,\r
  IN SAD_ENTRY_INDEXER    *Indexer\r
  )\r
{\r
  BOOLEAN    Match;\r
\r
  Match = FALSE;\r
  if (!IsMemoryZero (&Indexer->SaId, sizeof (EFI_IPSEC_SA_ID))) {\r
    Match = (BOOLEAN) (CompareMem (&Indexer->SaId, SaId, sizeof (EFI_IPSEC_SA_ID)) == 0);\r
  } else {\r
    if (Indexer->Index == 0) {\r
      Match = TRUE;\r
    }\r
    Indexer->Index--;\r
  }\r
\r
  return Match;\r
}\r
\r
/**\r
  Find the matching PAD with Indexer.\r
\r
  @param[in] PadId      The pointer to the EFI_IPSEC_PAD_ID structure.\r
  @param[in] Data       The pointer to the EFI_IPSEC_PAD_DATA structure.\r
  @param[in] Indexer    The pointer to the SPD_ENTRY_INDEXER structure.\r
\r
  @retval TRUE     The matched PAD is found.\r
  @retval FALSE    The matched PAD is not found.\r
**/\r
BOOLEAN\r
MatchPadEntry (\r
  IN EFI_IPSEC_PAD_ID      *PadId,\r
  IN EFI_IPSEC_PAD_DATA    *Data,\r
  IN PAD_ENTRY_INDEXER     *Indexer\r
  )\r
{\r
  BOOLEAN                       Match;\r
\r
  Match = FALSE;\r
  if (!IsMemoryZero (&Indexer->PadId, sizeof (EFI_IPSEC_PAD_ID))) {\r
    Match = (BOOLEAN) ((Indexer->PadId.PeerIdValid == PadId->PeerIdValid) &&\r
                       ((PadId->PeerIdValid &&\r
                         (StrCmp (\r
                            (CONST CHAR16 *) Indexer->PadId.Id.PeerId,\r
                            (CONST CHAR16 *) PadId->Id.PeerId\r
                            ) == 0)) ||\r
                        ((!PadId->PeerIdValid) &&\r
                         (Indexer->PadId.Id.IpAddress.PrefixLength == PadId->Id.IpAddress.PrefixLength) &&\r
                         (CompareMem (\r
                            &Indexer->PadId.Id.IpAddress.Address,\r
                            &PadId->Id.IpAddress.Address,\r
                            sizeof (EFI_IP_ADDRESS)\r
                            ) == 0))));\r
  } else {\r
    if (Indexer->Index == 0) {\r
      Match = TRUE;\r
    }\r
\r
    Indexer->Index--;\r
  }\r
\r
  return Match;\r
}\r
\r
MATCH_POLICY_ENTRY mMatchPolicyEntry[] = {\r
  (MATCH_POLICY_ENTRY) MatchSpdEntry,\r
  (MATCH_POLICY_ENTRY) MatchSadEntry,\r
  (MATCH_POLICY_ENTRY) MatchPadEntry\r
};\r
\r