访问 Samba 共享，无驱动器映射，带 IP 地址 - C#

Question

我正在尝试访问需要身份验证的 samba 共享。我不想映射驱动器。

我目前正在使用 samba 共享该主机名，该主机名已在 DNS 中注册。它不适用于普通 IP 地址。

我已经做了一些工作，使其同时工作（添加到 Windows 主机文件）

这是我在下面使用的代码：

public class PinvokeWindowsNetworking
{
    #region Consts
    const int RESOURCE_CONNECTED = 0x00000001;
    const int RESOURCE_GLOBALNET = 0x00000002;
    const int RESOURCE_REMEMBERED = 0x00000003;

    const int RESOURCETYPE_ANY = 0x00000000;
    const int RESOURCETYPE_DISK = 0x00000001;
    const int RESOURCETYPE_PRINT = 0x00000002;

    const int RESOURCEDISPLAYTYPE_GENERIC = 0x00000000;
    const int RESOURCEDISPLAYTYPE_DOMAIN = 0x00000001;
    const int RESOURCEDISPLAYTYPE_SERVER = 0x00000002;
    const int RESOURCEDISPLAYTYPE_SHARE = 0x00000003;
    const int RESOURCEDISPLAYTYPE_FILE = 0x00000004;
    const int RESOURCEDISPLAYTYPE_GROUP = 0x00000005;

    const int RESOURCEUSAGE_CONNECTABLE = 0x00000001;
    const int RESOURCEUSAGE_CONTAINER = 0x00000002;


    const int CONNECT_INTERACTIVE = 0x00000008;
    const int CONNECT_PROMPT = 0x00000010;
    const int CONNECT_REDIRECT = 0x00000080;
    const int CONNECT_UPDATE_PROFILE = 0x00000001;
    const int CONNECT_COMMANDLINE = 0x00000800;
    const int CONNECT_CMD_SAVECRED = 0x00001000;

    const int CONNECT_LOCALDRIVE = 0x00000100;
    #endregion

    #region Errors
    const int NO_ERROR = 0;

    const int ERROR_ACCESS_DENIED = 5;
    const int ERROR_ALREADY_ASSIGNED = 85;
    const int ERROR_BAD_DEVICE = 1200;
    const int ERROR_BAD_NET_NAME = 67;
    const int ERROR_BAD_PROVIDER = 1204;
    const int ERROR_CANCELLED = 1223;
    const int ERROR_EXTENDED_ERROR = 1208;
    const int ERROR_INVALID_ADDRESS = 487;
    const int ERROR_INVALID_PARAMETER = 87;
    const int ERROR_INVALID_PASSWORD = 1216;
    const int ERROR_MORE_DATA = 234;
    const int ERROR_NO_MORE_ITEMS = 259;
    const int ERROR_NO_NET_OR_BAD_PATH = 1203;
    const int ERROR_NO_NETWORK = 1222;

    const int ERROR_BAD_PROFILE = 1206;
    const int ERROR_CANNOT_OPEN_PROFILE = 1205;
    const int ERROR_DEVICE_IN_USE = 2404;
    const int ERROR_NOT_CONNECTED = 2250;
    const int ERROR_OPEN_FILES = 2401;

    private struct ErrorClass
    {
        public int num;
        public string message;
        public ErrorClass(int num, string message)
        {
            this.num = num;
            this.message = message;
        }
    }


    // Created with excel formula:
    // ="new ErrorClass("&A1&", """&PROPER(SUBSTITUTE(MID(A1,7,LEN(A1)-6), "_", " "))&"""), "
    private static ErrorClass[] ERROR_LIST = new ErrorClass[] {
        new ErrorClass(ERROR_ACCESS_DENIED, "Error: Access Denied"), 
        new ErrorClass(ERROR_ALREADY_ASSIGNED, "Error: Already Assigned"), 
        new ErrorClass(ERROR_BAD_DEVICE, "Error: Bad Device"), 
        new ErrorClass(ERROR_BAD_NET_NAME, "Error: Bad Net Name"), 
        new ErrorClass(ERROR_BAD_PROVIDER, "Error: Bad Provider"), 
        new ErrorClass(ERROR_CANCELLED, "Error: Cancelled"), 
        new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"), 
        new ErrorClass(ERROR_INVALID_ADDRESS, "Error: Invalid Address"), 
        new ErrorClass(ERROR_INVALID_PARAMETER, "Error: Invalid Parameter"), 
        new ErrorClass(ERROR_INVALID_PASSWORD, "Error: Invalid Password"), 
        new ErrorClass(ERROR_MORE_DATA, "Error: More Data"), 
        new ErrorClass(ERROR_NO_MORE_ITEMS, "Error: No More Items"), 
        new ErrorClass(ERROR_NO_NET_OR_BAD_PATH, "Error: No Net Or Bad Path"), 
        new ErrorClass(ERROR_NO_NETWORK, "Error: No Network"), 
        new ErrorClass(ERROR_BAD_PROFILE, "Error: Bad Profile"), 
        new ErrorClass(ERROR_CANNOT_OPEN_PROFILE, "Error: Cannot Open Profile"), 
        new ErrorClass(ERROR_DEVICE_IN_USE, "Error: Device In Use"), 
        new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"), 
        new ErrorClass(ERROR_NOT_CONNECTED, "Error: Not Connected"), 
        new ErrorClass(ERROR_OPEN_FILES, "Error: Open Files"), 
    };

    private static string getErrorForNumber(int errNum)
    {
        try
        {
            foreach (ErrorClass er in ERROR_LIST)
            {
                if (er.num == errNum) return er.message;
            }
            return "Error: Unknown, " + errNum;
        }
        catch (Exception _ex)
        {
            Console.WriteLine(String.Format("Error: (Pinvoke) Getting Error. Error Number: {0} Exception: {1}", errNum, _ex));
        }
        return "Error: Unknown, " + errNum;
    }
    #endregion

    [DllImport("Mpr.dll")]
    private static extern int WNetUseConnection(
        IntPtr hwndOwner,
        NETRESOURCE lpNetResource,
        string lpPassword,
        string lpUserID,
        int dwFlags,
        string lpAccessName,
        string lpBufferSize,
        string lpResult
        );

    [DllImport("Mpr.dll")]
    private static extern int WNetCancelConnection2(
        string lpName,
        int dwFlags,
        bool fForce
        );

    [StructLayout(LayoutKind.Sequential)]
    private class NETRESOURCE
    {
        public int dwScope = 0;
        public int dwType = 0;
        public int dwDisplayType = 0;
        public int dwUsage = 0;
        public string lpLocalName = "";
        public string lpRemoteName = "";
        public string lpComment = "";
        public string lpProvider = "";
    }


    public static string connectToRemote(string remoteUNC, string username, string password)
    {
        try
        {
            return connectToRemote(remoteUNC, username, password, false);
        }
        catch (Exception _ex)
        {
            Console.WriteLine("Error: (Pinvoke) Getting Error connectToRemote" + _ex);
        }
        return connectToRemote(remoteUNC, username, password, false);
    }

    public static string connectToRemote(string remoteUNC, string username, string password, bool promptUser)
    {
        try
        {
            NETRESOURCE nr = new NETRESOURCE();
            nr.dwType = RESOURCETYPE_DISK;
            nr.lpRemoteName = remoteUNC;
            //          nr.lpLocalName = "F:";

            int ret;
            if (promptUser)
                ret = WNetUseConnection(IntPtr.Zero, nr, "", "", CONNECT_INTERACTIVE | CONNECT_PROMPT, null, null, null);
            else
                ret = WNetUseConnection(IntPtr.Zero, nr, password, username, 0, null, null, null);

            if (ret == NO_ERROR) return null;
            return getErrorForNumber(ret);
        }
        catch (Exception _ex)
        {
            Console.WriteLine("Error: (Pinvoke) Getting Error connectToRemote" + _ex);
        }
        return "Error: (Pinvoke) Getting Error connectToRemote";
    }

    public static string disconnectRemote(string remoteUNC)
    {
        int ret = WNetCancelConnection2(remoteUNC, CONNECT_UPDATE_PROFILE, false);
        if (ret == NO_ERROR) return null;
        return getErrorForNumber(ret);
    }
}

那么有什么想法吗？

提前致谢！

Answer 1

如前所述： 访问 Windows 共享在会话打开之前通过 UNC 路径

这有点重复，但简短的版本是使用 UNC 路径：

\\hostnameorIP\sharename\folder\within\share\file.txt

你应该能够像 C# 中的任何其他文件一样对待它，并且无需映射就可以了。这也可以直接在 Windows 资源管理器中运行。我一直这样做，因为如果与共享的连接很慢（对我来说确实如此），工作中的映射会导致我的电脑和其他一些 Windows 资源管理器的运行速度变慢。

比如：

using System.IO;
FileStream lFileStream = new FileStream(@"\\hostnameorIP\sharename\folder\within\share\file.txt",...);

// Do stuff with it

应该可以正常工作。

Answer 2

远程服务器实际上是 Samba 服务器，还是某种其他类型的 SMB 服务器（如 Windows）？

Samba 将允许通过 IP 地址进行连接，但大多数其他 SMB 服务器（如 Windows）通常不允许。并要求您有 NetBIOS 名称。