ITブログ時々なんでもブログ

using Jcifs;
using Jcifs.Smb;
using Xamarin.Forms;
using System.Threading.Tasks;
using System.Collections.Generic;
[assembly: Dependency(typeof(SmbService))]
public class SmbService : ISmbService
{
    private UniAddress _domain = null;
    private NtlmPasswordAuthentication _auth = null;
    private HostInfo _hostInfo = null;
    private SmbFile _smbFile = null;
    private bool _isLogon = false;
    /// <summary>
    /// SmbFileインスタンスを保持する
    /// </summary>
    /// <param name="path">フルパス</param>
    private void CreateSmbInstance(string path)
    {
        if (_smbFile != null && _smbFile.Path.Equals(path))
        {
            //pathが変更ない場合はインスタンスを使いまわす。
            return;
        }
        else if (_smbFile != null)
        {
            _smbFile.Dispose();
        }
        _smbFile = new SmbFile(path, this._auth);
    }
    /// <summary>
    /// ホスト情報の受け渡し
    /// </summary>
    /// <param name="hostInfo">ホスト情報</param>
    public void SetHostInfo(HostInfo hostInfo)
    {
        if (hostInfo == null)
        {
            throw new Exception("Hostinfo is not set.");
        }
        _hostInfo = hostInfo;
    }
    /// <summary>
    /// ログオン処理
    /// </summary>
    public void Logon(ref string err)
    {
        if (_hostInfo == null)
        {
            throw new Exception("Hostinfo is not set.");
        }
        //ログイン処理を非同期で行う
        var task = new Task<string>(() =>
        {
            try
            {
                this._domain = UniAddress.GetByName(_hostInfo.IP);
                this._auth = new NtlmPasswordAuthentication(_hostInfo.IP, _hostInfo.UserName, _hostInfo.Password);
                SmbSession.Logon(this._domain, this._auth);
                _isLogon = true;
                return String.Empty;
            }
            catch (Exception ex)
            {
                _isLogon = false;
                return ex.Message;
            }
        });
        task.Start();
        task.Wait();
        err = task.Result;
    }
    /// <summary>
    /// ディレクトリ一覧を取得する
    /// </summary>
    /// <param name="path">検索するフルパス</param>
    /// <returns>ディレクトリ一覧</returns>
    public string[] GetDirectories(string path)
    {
        if (!_isLogon)
        {
            throw new Exception("You are not logged on to the remote host.");
        }
        var task = new Task<string[]>(() =>
        {
            this.CreateSmbInstance(path);
            List<string> list = new List<string>();
            if (_smbFile.IsDirectory)
            {
                foreach (SmbFile dir in _smbFile.ListFiles())
                {
                    if (dir.IsDirectory)
                    {
                        list.Add(_smbFile.Path + dir.Name.Replace("/", ""));
                    }
                }
                return list.ToArray();
            }
            return null;
        });
        task.Start();
        task.Wait();
        return task.Result;
    }
    /// <summary>
    /// ファイル一覧を取得する
    /// </summary>
    /// <param name="path">検索するフルパス</param>
    /// <returns>ファイル一覧</returns>
    public string[] GetFiles(string path)
    {
        if (!_isLogon)
        {
            throw new Exception("You are not logged on to the remote host.");
        }
        var task = new Task<string[]>(() =>
            {
                this.CreateSmbInstance(path);
                List<string> list = new List<string>();
                if (_smbFile.IsDirectory)
                {
                    foreach (SmbFile dir in _smbFile.ListFiles())
                    {
                        if (dir.IsFile)
                        {
                            list.Add(_smbFile.Path + dir.Name);
                        }
                    }
                    return list.ToArray();
                }
                return null;
            });
            task.Start();
            task.Wait();
            return task.Result;
    }
}