398 lines
8.6 KiB
C
398 lines
8.6 KiB
C
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#include "precomp.h"
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LPWSTR gpszIpsecTxFiltersKey =
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L"SOFTWARE\\Microsoft\\IPSec\\Transport Filters";
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DWORD
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PersistTxFilter(
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GUID gFilterID,
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PTRANSPORT_FILTER pTxFilter
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)
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{
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DWORD dwError = 0;
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HKEY hRegistryKey = NULL;
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DWORD dwDisposition = 0;
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dwError = RegCreateKeyExW(
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HKEY_LOCAL_MACHINE,
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gpszIpsecTxFiltersKey,
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0,
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NULL,
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0,
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KEY_ALL_ACCESS,
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NULL,
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&hRegistryKey,
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&dwDisposition
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = SPDWriteTxFilter(
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hRegistryKey,
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gFilterID,
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pTxFilter
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);
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BAIL_ON_WIN32_ERROR(dwError);
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cleanup:
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if (hRegistryKey) {
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RegCloseKey(hRegistryKey);
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}
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return (dwError);
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error:
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if (hRegistryKey) {
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(VOID) SPDPurgeTxFilter(
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gFilterID
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);
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}
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goto cleanup;
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}
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DWORD
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SPDWriteTxFilter(
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HKEY hParentRegKey,
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GUID gFilterID,
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PTRANSPORT_FILTER pTxFilter
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)
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{
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DWORD dwError = 0;
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WCHAR szFilterID[MAX_PATH];
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WCHAR szPolicyID[MAX_PATH];
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LPWSTR pszStringUuid = NULL;
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LPWSTR pszPolicyUuid = NULL;
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HKEY hRegKey = NULL;
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DWORD dwDisposition = 0;
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LPBYTE pBuffer = NULL;
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DWORD dwBufferSize = 0;
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DWORD dwInterfaceType = 0;
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DWORD dwMirrored = 0;
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DWORD dwInboundFilterFlag = 0;
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DWORD dwOutboundFilterFlag = 0;
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szFilterID[0] = L'\0';
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szPolicyID[0] = L'\0';
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dwError = UuidToString(
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&gFilterID,
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&pszStringUuid
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);
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BAIL_ON_WIN32_ERROR(dwError);
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wcscpy(szFilterID, L"{");
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wcscat(szFilterID, pszStringUuid);
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wcscat(szFilterID, L"}");
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dwError = UuidToString(
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&pTxFilter->gPolicyID,
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&pszPolicyUuid
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);
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BAIL_ON_WIN32_ERROR(dwError);
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wcscpy(szPolicyID, L"{");
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wcscat(szPolicyID, pszPolicyUuid);
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wcscat(szPolicyID, L"}");
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dwError = RegCreateKeyExW(
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hParentRegKey,
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szFilterID,
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0,
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NULL,
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0,
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KEY_ALL_ACCESS,
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NULL,
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&hRegKey,
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&dwDisposition
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = RegSetValueExW(
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hRegKey,
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L"FilterID",
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0,
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REG_SZ,
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(LPBYTE) szFilterID,
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(wcslen(szFilterID) + 1)*sizeof(WCHAR)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = RegSetValueExW(
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hRegKey,
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L"FilterName",
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0,
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REG_SZ,
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(LPBYTE) pTxFilter->pszFilterName,
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(wcslen(pTxFilter->pszFilterName) + 1)*sizeof(WCHAR)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwInterfaceType = (DWORD) pTxFilter->InterfaceType;
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dwError = RegSetValueExW(
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hRegKey,
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L"InterfaceType",
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0,
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REG_DWORD,
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(LPBYTE)&dwInterfaceType,
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sizeof(DWORD)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwMirrored = (DWORD) pTxFilter->bCreateMirror;
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dwError = RegSetValueExW(
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hRegKey,
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L"Mirrored",
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0,
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REG_DWORD,
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(LPBYTE)&dwMirrored,
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sizeof(DWORD)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = RegSetValueExW(
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hRegKey,
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L"Flags",
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0,
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REG_DWORD,
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(LPBYTE)&pTxFilter->dwFlags,
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sizeof(DWORD)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = MarshallTxFilterBuffer(
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pTxFilter,
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&pBuffer,
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&dwBufferSize
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = RegSetValueExW(
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hRegKey,
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L"Transport Filter Buffer",
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0,
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REG_BINARY,
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(LPBYTE) pBuffer,
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dwBufferSize
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwInboundFilterFlag = (DWORD) pTxFilter->InboundFilterFlag;
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dwError = RegSetValueExW(
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hRegKey,
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L"InboundFilterFlag",
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0,
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REG_DWORD,
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(LPBYTE)&dwInboundFilterFlag,
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sizeof(DWORD)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwOutboundFilterFlag = (DWORD) pTxFilter->OutboundFilterFlag;
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dwError = RegSetValueExW(
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hRegKey,
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L"OutboundFilterFlag",
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0,
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REG_DWORD,
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(LPBYTE)&dwOutboundFilterFlag,
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sizeof(DWORD)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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dwError = RegSetValueExW(
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hRegKey,
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L"PolicyID",
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0,
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REG_SZ,
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(LPBYTE) szPolicyID,
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(wcslen(szPolicyID) + 1)*sizeof(WCHAR)
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);
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BAIL_ON_WIN32_ERROR(dwError);
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cleanup:
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if (pszStringUuid) {
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RpcStringFree(&pszStringUuid);
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}
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if (pszPolicyUuid) {
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RpcStringFree(&pszPolicyUuid);
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}
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if (hRegKey) {
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RegCloseKey(hRegKey);
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}
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if (pBuffer) {
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FreeSPDMem(pBuffer);
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}
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return (dwError);
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error:
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goto cleanup;
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}
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DWORD
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MarshallTxFilterBuffer(
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PTRANSPORT_FILTER pTxFilter,
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LPBYTE * ppBuffer,
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PDWORD pdwBufferSize
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)
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{
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DWORD dwError = 0;
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LPBYTE pBuffer = NULL;
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DWORD dwBufferSize = 0;
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LPBYTE pMem = NULL;
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static const GUID GUID_IPSEC_TX_FILTER_VER1 =
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{ 0xabcd0005, 0x0001, 0x0001, { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 } };
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dwBufferSize = sizeof(GUID) +
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sizeof(DWORD) +
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sizeof(ADDR) +
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sizeof(ADDR) +
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sizeof(PROTOCOL) +
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sizeof(PORT) +
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sizeof(PORT);
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pBuffer = (LPBYTE) AllocSPDMem(
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dwBufferSize
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);
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if (!pBuffer) {
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dwError = ERROR_OUTOFMEMORY;
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BAIL_ON_WIN32_ERROR(dwError);
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}
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pMem = pBuffer;
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memcpy(
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pMem,
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(LPBYTE) &GUID_IPSEC_TX_FILTER_VER1,
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sizeof(GUID)
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);
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pMem += sizeof(GUID);
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memcpy(
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pMem,
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(LPBYTE) &dwBufferSize,
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sizeof(DWORD)
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);
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pMem += sizeof(DWORD);
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memcpy(
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pMem,
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(LPBYTE) &pTxFilter->SrcAddr,
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sizeof(ADDR)
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);
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pMem += sizeof(ADDR);
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memcpy(
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pMem,
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(LPBYTE) &pTxFilter->DesAddr,
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sizeof(ADDR)
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);
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pMem += sizeof(ADDR);
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memcpy(
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pMem,
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(LPBYTE) &pTxFilter->Protocol,
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sizeof(PROTOCOL)
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);
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pMem += sizeof(PROTOCOL);
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memcpy(
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pMem,
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(LPBYTE) &pTxFilter->SrcPort,
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sizeof(PORT)
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);
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pMem += sizeof(PORT);
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memcpy(
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pMem,
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(LPBYTE) &pTxFilter->DesPort,
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sizeof(PORT)
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);
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pMem += sizeof(PORT);
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*ppBuffer = pBuffer;
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*pdwBufferSize = dwBufferSize;
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return (dwError);
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error:
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*ppBuffer = NULL;
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*pdwBufferSize = 0;
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return (dwError);
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}
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DWORD
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SPDPurgeTxFilter(
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GUID gTxFilterID
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)
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{
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DWORD dwError = 0;
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HKEY hParentRegKey = NULL;
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DWORD dwDisposition = 0;
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WCHAR szFilterID[MAX_PATH];
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LPWSTR pszStringUuid = NULL;
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dwError = RegCreateKeyExW(
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HKEY_LOCAL_MACHINE,
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gpszIpsecTxFiltersKey,
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0,
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NULL,
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0,
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KEY_ALL_ACCESS,
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NULL,
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&hParentRegKey,
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&dwDisposition
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);
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BAIL_ON_WIN32_ERROR(dwError);
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szFilterID[0] = L'\0';
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dwError = UuidToString(
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&gTxFilterID,
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&pszStringUuid
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);
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BAIL_ON_WIN32_ERROR(dwError);
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wcscpy(szFilterID, L"{");
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wcscat(szFilterID, pszStringUuid);
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wcscat(szFilterID, L"}");
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dwError = RegDeleteKeyW(
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hParentRegKey,
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szFilterID
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);
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BAIL_ON_WIN32_ERROR(dwError);
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error:
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if (hParentRegKey) {
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RegCloseKey(hParentRegKey);
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}
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if (pszStringUuid) {
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RpcStringFree(&pszStringUuid);
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}
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return(dwError);
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}
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