clientstore.c

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    VOLT_SET_FNCT_LINE (fnctLine)
    status = VoltConvertTimeToSeconds (
      libCtx, &(distObj->validityEnd), &seconds);
    if (status != 0)
      break;
    VoltConvertTimeToVoltage (&seconds, validityEnd);

    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_MEMORY;
    nameCopy = (unsigned char *)Z2Malloc (districtLen, 0);
    if (nameCopy == (unsigned char *)0)
      break;
    Z2Memcpy (nameCopy, district, districtLen);

    /* If we are here means everything worked and we have found the district
    */
    *currentDistrictResult = VOLT_CURRENT_DIST_FOUND;
    *currentDistrict = nameCopy;
    status = 0;

  } while (0);

  /* Close any handles we opened and free any data we allocated.
   */
  if (cdKey != (HKEY)0)
    RegCloseKey(cdKey);
  if (updateKey != (HKEY)0)
    RegCloseKey (updateKey);
  if (paramKey != (HKEY)0)
    RegCloseKey (paramKey);

  /* free the buffer allocated for public params
   * we don't need it anymore.
   */
  if (params != (unsigned char *)0)
    Z2Free (params);

  /* Destroy the temporary objects that we created.
   */
  VtDestroyMpIntCtx (&mpCtx);
  VtDestroyDistrictObject (&distObj);

  if (status == 0)
    return (0);

  /* If there was an error, we won't return this buffer.
   */  
  if (nameCopy != (unsigned char *)0)
    Z2Free (nameCopy);

  VOLT_LOG_ERROR_INFO (
    0, storageCtx, status, ret, errorType,
    (char *)0, "VoltClientRetrieveCurrentDistrictAlloc", fnctLine, (char *)0)

  return (status);
}

int VoltClientRetrieveDistrictParameters (
   VtStorageCtx storageCtx,
   VtDistrictObject entry,
   unsigned int index,
   VtTime *timeOfStore
   )
{
  int status, ret;
  unsigned int paramTextLen, valueCount;
  HKEY paramKey = (HKEY)0;
  HKEY updateKey = (HKEY)0;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltDefaultStorageCtx *defStorageCtx =
    (VoltDefaultStorageCtx *)(ctx->localStorageCtx);
  VoltFileCtx *fileCtx = (VoltFileCtx *)(defStorageCtx->fCtx);
  VoltDistrictObject *distObj = (VoltDistrictObject *)entry;
  unsigned char *fileName = (unsigned char *)0;
  unsigned char *password = (unsigned char *)0;
  unsigned char *contents = (unsigned char *)0;
  unsigned char *nameToUse;
  unsigned char distName[256];
  unsigned int distNameLen;
  unsigned int updateLen;
  VoltFileHandle fileHandle = (VoltFileHandle)0;
  VtFileNameList *nameList = (VtFileNameList *)0;
  time_t updateTime;
  VOLT_DECLARE_ERROR_TYPE (errorType)
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  updateLen = sizeof (updateTime);
  distNameLen = sizeof (distName);
  nameToUse = distName;
  ret = ERROR_SUCCESS;

  do
  {
    /* If the entry obj is already set, error.
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_INVALID_STORAGE_ENTRY;
    if ( (distObj->paramsText != (unsigned char *)0) ||
         (distObj->paramObj != (VtParameterObject)0) )
      break;

    /* Open the parameters registry key
     */
    VOLT_SET_ERROR_TYPE (
      errorType, VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_OPEN_REGISTRY_KEY;
    ret = RegOpenKey (
      HKEY_CURRENT_USER, 
      _T("Software\\Voltage\\VSCOM\\parameters"), &paramKey);

    /* If there is no registry entry for this key it means no district.
     * Hence no params were found.
     */
    if (ret != ERROR_SUCCESS)
    {
      if (ret == ERROR_FILE_NOT_FOUND)
        status = VT_ERROR_UNKNOWN_DISTRICT;
      break;
    }

    /* Now open the update key to find the last update time
     * for public params.
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    ret = RegOpenKey (
      HKEY_CURRENT_USER, 
      _T("Software\\Voltage\\VSCOM\\paramUpdates"), &updateKey);
    if (ret != ERROR_SUCCESS)
      break;

    status = VT_ERROR_INVALID_STORAGE_REF;
    if (distObj->qualDistrictName.data == (unsigned char *)0)
    {
      /* If there's no qualified name, there can be no domain name.
       */
      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      if (distObj->unqualDistrictName.data != (unsigned char *)0)
        break;

      /* We have to get the value based on the index now.
       */
      VOLT_SET_ERROR_TYPE (
        errorType, VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM)
      VOLT_SET_FNCT_LINE (fnctLine)
      valueCount = 0;
      status = VT_ERROR_READ_REGISTRY_VALUE;
      ret = RegQueryInfoKey (
        paramKey, NULL, NULL, NULL, NULL, NULL, 
        NULL, &valueCount, NULL, NULL, NULL, NULL);
      if (ret != ERROR_SUCCESS)
        break;

      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_ENTRY_NOT_FOUND;
      if (valueCount == 0)
        break;
      if (index >= valueCount)
        break;

      VOLT_SET_ERROR_TYPE (
        errorType, VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_READ_REGISTRY_VALUE;
      ret = RegEnumValue (
        paramKey, index, distName, &distNameLen, 
        NULL, NULL, NULL, &paramTextLen);
      if (ret != ERROR_SUCCESS)
        break;

      distName[distNameLen] = 0;
    }
    else
    {
      /* We get the entry based on district
       */      
      VOLT_SET_ERROR_TYPE (
        errorType, VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_READ_REGISTRY_VALUE;
      ret = RegQueryValueEx (
           paramKey, distObj->qualDistrictName.data, NULL,
           NULL, (unsigned char *)0, &paramTextLen);
      if (ret == ERROR_FILE_NOT_FOUND)
        status = VT_ERROR_UNKNOWN_DISTRICT;
      if (ret != ERROR_SUCCESS)
        break;

      nameToUse = distObj->qualDistrictName.data;
    }

    /* Allocate the memory to read the public parameters
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_MEMORY;
    contents = (unsigned char *)Z2Malloc (paramTextLen, 0);
    if (contents == (unsigned char *)0)
      break;

    VOLT_SET_ERROR_TYPE (
      errorType, VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_READ_REGISTRY_VALUE;
    ret = RegQueryValueEx (
      paramKey, nameToUse, NULL, NULL, contents, &paramTextLen);
    if (ret != ERROR_SUCCESS)
      break;

    VOLT_SET_FNCT_LINE (fnctLine)
    ret = RegQueryValueEx (
      updateKey, nameToUse, NULL, NULL, (unsigned char *)&updateTime,
      &updateLen);
    if (ret != ERROR_SUCCESS)
      break;

    /* Convert the time_t struct to Voltage time
     */
    VOLT_SET_ERROR_TYPE (errorType, 0)
    VOLT_SET_FNCT_LINE (fnctLine)
    VoltConvertTimeToVoltage ((VoltTime *)&updateTime , timeOfStore);

    /* Now set the district object with the param text
    */
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VoltSetDistFromParamsText (
      contents, paramTextLen, distObj, distObj->mpCtx, libCtx);

  } while (0);

  if (paramKey != (HKEY)0)
    RegCloseKey(paramKey);
  if (updateKey != (HKEY)0)
    RegCloseKey(updateKey);
  if (contents != (unsigned char *)0)
    Z2Free (contents);
  
  VOLT_LOG_ERROR_INFO_COMPARE (
    status, 0, storageCtx, status, ret,
    VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM,
    (char *)0, "VoltClientDeleteCurrentDistrict", fnctLine, (char *)0)

  return (status);
}

int VoltClientDeleteCurrentDistrict (
   VtStorageCtx storageCtx,
   unsigned char *reference
   )
{
  HKEY cdKey = (HKEY)0;
  HKEY updateKey = (HKEY)0;
  int status, ret;
  int cdExists, updateExists;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltDefaultStorageCtx *defStorageCtx =
    (VoltDefaultStorageCtx *)(ctx->localStorageCtx);
  VoltFileCtx *fileCtx = (VoltFileCtx *)(defStorageCtx->fCtx);
  unsigned char *fileName = (unsigned char *)0;
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  cdExists = 1;
  updateExists = 1;

  do
  {
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_OPEN_REGISTRY_KEY;
    ret = RegOpenKey (
      HKEY_CURRENT_USER, 
      _T("Software\\Voltage\\VSCOM\\currentDistricts"), &cdKey);
    if (ret != ERROR_SUCCESS)
    {
      if (ret == ERROR_FILE_NOT_FOUND)
        cdExists = 0;
      else
        break;
    }

    VOLT_SET_FNCT_LINE (fnctLine)
    ret = RegOpenKey (
      HKEY_CURRENT_USER, _T("Software\\Voltage\\VSCOM\\cdUpdates"),
      &updateKey);
    if (ret != ERROR_SUCCESS)
    {
      if (ret == ERROR_FILE_NOT_FOUND)
        updateExists = 0;
      else
        break;
    }

   /* Delete the district entries from the registry
    */
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_DELETE_REGISTRY_VALUE;
    if (cdExists == 1)
    {
      ret = RegDeleteValue (cdKey, reference);
      if ( (ret != ERROR_SUCCESS) && (ret != ERROR_FILE_NOT_FOUND) )
        break;
    }
    if (updateExists == 1)
    {
      ret = RegDeleteValue (updateKey, reference);
      if ( (ret != ERROR_SUCCESS) && (ret != ERROR_FILE_NOT_FOUND) )
        break;
    }

    status = 0;

  } while (0);

  if (cdKey != (HKEY)0)
    RegCloseKey (cdKey);
  if (updateKey != (HKEY)0)
    RegCloseKey (updateKey);

  VOLT_LOG_ERROR_INFO_COMPARE (
    status, 0, storageCtx, status, ret,
    VT_ERROR_TYPE_PRIMARY | VT_ERROR_TYPE_SYSTEM,
    (char *)0, "VoltClientDeleteCurrentDistrict", fnctLine, (char *)0)

  return (status);
}

int VoltClientRetrievePublicSigningCert (
   VtStorageCtx storageCtx,
   VtIdentityObject reference,
   unsigned int index,
   VtCertObject certObj
   )
{
  int status;
  VoltFileInt fileSize;
  unsigned int fileNameLen, contentsLen;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltIdentityObject *idObj = (VoltIdentityObject *)reference;
  VoltFileCtx *fileCtx = (VoltFileCtx *)0;
  VoltFileHandle fileHandle = (VoltFileHandle)0;
  VoltDefaultStorageCtx *defStorageCtx;
  unsigned char *fileName = (unsigned char *)0;
  unsigned char *contents = (unsigned char *)0;
  unsigned char *nameToUse;
  VtFileNameList *nameList = (VtFileNameList *)0;
  VtCertInfo certInfo;
  VtDerCoder *derCoders[1] = { VtDerCoderDSAPublicKey };
  VOLT_DECLARE_ERROR_TYPE (errorType)
  VOLT_DECLARE_FNCT_LINE (fnctLine)

  /* This implementation works only on X.509 certs and only with DSA as
   * the public key and the signing key.
   */

  /* Get the File Ctx
   */
  defStorageCtx = (VoltDefaultStorageCtx *)ctx->localStorageCtx;
  fileCtx = (VoltFileCtx *)defStorageCtx->fCtx;

  Z2Memset (&certInfo, 0, sizeof (VtCertInfo));

  do
  {
    /* If there's no reference, get whatever value is at the index.
     */
    if (reference == (VtIdentityObject)0)
    {
      VOLT_SET_ERROR_TYPE (errorType, 0)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetStorageFileListAlloc (
        ctx, VOLT_STORE_DIR_SIGN_CERTS_CLIENT, VOLT_STORE_DIR_SIGN_CERTS_CLIENT_LEN,
        0, &nameList);
      if (status != 0)
        break;

      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_ENTRY_NOT_FOUND;
      if (nameList == (VtFileNameList *)0)
        break;

      if (index >= nameList->nameCount)
        break;

      nameToUse = nameList->nameList[index];
    }
    else
    {
      /* We need the identity encoded.
       */
      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_INVALID_STORAGE_REF;
      if (idObj->encoding.data == (unsigned char *)0)
        break;

      /* Get the file name.
       */
      VOLT_SET_ERROR_TYPE (errorType, 0)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetFileNameFromValueAlloc (
        ctx, (unsigned char *)0, 0, idObj->encoding.data, idObj->encoding.len,
        VOLT_FILE_NAME_VALUE_TYPE_CERT_CLIENT, &fileName, &fileNameLen);
      if (status != 0)
        break;

      nameToUse = fileName;
    }

    /* Try to open this file.
     */
    VOLT_SET_ERROR_TYPE (errorType, 0)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = fileCtx->CtxOpenFile (
      fileCtx, &fileHandle, nameToUse, VOLT_FILE_MO