/// <summary>
/// タイマー実行される関数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
LoadRegistry();
lock (LockObject)
{
if (DateTime.Now > NextExecutionDateTime)
{
bool fnetworkCapability = true;
try
{
// ホスト名取得
HostName = Dns.GetHostName();
// IP取得
IpAddress = GetIpFromHost(HostName);
// Hostsのフォーマットに変換
HostsLine = IpAddress + " " + HostName;
}
catch(Exception)
{
fnetworkCapability = false;
eventLog.WriteEntry("Cannot get the Hostname and IP.", EventLogEntryType.Error);
}
if (fnetworkCapability)
{
foreach (string strExternalHostsSaveTarget in externalHostsSaveTargetCollection)
{
// 外部Hostsがネットワーク上か調べる
string externalHostsSaveTargetFolderPath = Path.GetDirectoryName(strExternalHostsSaveTarget);
NetworkUtility networkUtility = new NetworkUtility(externalHostsSaveTargetFolderPath);
// 外部Hostsがネットワーク上だった場合
if (networkUtility.CheckNetworkPath())
{
eventLog.WriteEntry(externalHostsSaveTargetFolderPath + " is network path.", EventLogEntryType.Information);
// ユーザーを偽装する
using (NativeMethods.GetImpersonationContext("NetworkService", "NT AUTHORITY", ""))
{
bool isSuccessNetworkConnect;
// ユーザー情報に応じて接続を試みる
if (IsNetworkAuthentication)
{
isSuccessNetworkConnect = networkUtility.Connect(externalHostsSaveTargetFolderPath, NetworkAuthenticationUsername, NetworkAuthenticationPassword);
}
else
{
isSuccessNetworkConnect = networkUtility.Connect();
}
// 接続成功の場合
if (isSuccessNetworkConnect)
{
eventLog.WriteEntry("Succeeded connecting to " + externalHostsSaveTargetFolderPath, EventLogEntryType.Information);
// Hostsをアップデート
UpdateHosts(strExternalHostsSaveTarget);
// ネットワーク切断と破棄
if (isSuccessNetworkConnect)
{
networkUtility.Disconnect();
eventLog.WriteEntry("Disconnected to " + externalHostsSaveTargetFolderPath, EventLogEntryType.Information);
}
networkUtility = null;
}
// 接続失敗の場合
else
{
eventLog.WriteEntry("Failed connecting to " + externalHostsSaveTargetFolderPath, EventLogEntryType.Information);
}
}
}
// 外部Hostsがローカルだった場合
else
{
eventLog.WriteEntry(externalHostsSaveTargetFolderPath + " is local path.", EventLogEntryType.Information);
// Hostsをアップデート
UpdateHosts(strExternalHostsSaveTarget);
}
}
}
UpdateNextPoll();
}
}
}