C# 如何从网络共享访问受密码保护的文件?
我遇到了一个问题,我必须从网络共享位置获取受密码保护的文件夹的内容(文件和子目录)。 给定,我有访问文件夹的密码和访问该位置的文件路径。我如何实现这一点 假设这是共享网络- \服务器\Sharedfiles\PasswordProtectedFolderC# 如何从网络共享访问受密码保护的文件?,c#,asp.net,C#,Asp.net,我遇到了一个问题,我必须从网络共享位置获取受密码保护的文件夹的内容(文件和子目录)。 给定,我有访问文件夹的密码和访问该位置的文件路径。我如何实现这一点 假设这是共享网络- \服务器\Sharedfiles\PasswordProtectedFolder 我想获取其中的内容列表。您可以使用下面的代码从UNC路径访问文件 public static class NetworkShare { /// <summary> /// Connec
我想获取其中的内容列表。您可以使用下面的代码从UNC路径访问文件
public static class NetworkShare
{
/// <summary>
/// Connects to the remote share
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string ConnectToShare(string uri, string username, string password)
{
//Create netresource and point it at the share
var nr = new Netresource
{
dwType = ResourcetypeDisk,
lpRemoteName = uri
};
//Create the share
var ret = WNetUseConnection(IntPtr.Zero, nr, password, username, 0, null, null, null);
//Check for errors
return ret == NoError ? null : GetError(ret);
}
/// <summary>
/// Remove the share from cache.
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string DisconnectFromShare(string uri, bool force)
{
//remove the share
var ret = WNetCancelConnection(uri, force);
//Check for errors
return ret == NoError ? null : GetError(ret);
}
#region P/Invoke Stuff
[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 WNetCancelConnection(
string lpName,
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 = "";
}
#region Consts
const int ResourcetypeDisk = 0x00000001;
const int ConnectUpdateProfile = 0x00000001;
#endregion
#region Errors
const int NoError = 0;
const int ErrorAccessDenied = 5;
const int ErrorAlreadyAssigned = 85;
const int ErrorBadDevice = 1200;
const int ErrorBadNetName = 67;
const int ErrorBadProvider = 1204;
const int ErrorCancelled = 1223;
const int ErrorExtendedError = 1208;
const int ErrorInvalidAddress = 487;
const int ErrorInvalidParameter = 87;
const int ErrorInvalidPassword = 1216;
const int ErrorMoreData = 234;
const int ErrorNoMoreItems = 259;
const int ErrorNoNetOrBadPath = 1203;
const int ErrorNoNetwork = 1222;
const int ErrorSessionCredentialConflict = 1219;
const int ErrorBadProfile = 1206;
const int ErrorCannotOpenProfile = 1205;
const int ErrorDeviceInUse = 2404;
const int ErrorNotConnected = 2250;
const int ErrorOpenFiles = 2401;
private struct ErrorClass
{
public int Num;
public string Message;
public ErrorClass(int num, string message)
{
this.Num = num;
this.Message = message;
}
}
private static readonly ErrorClass[] ErrorList = new ErrorClass[] {
new ErrorClass(ErrorAccessDenied, "Error: Access Denied"),
new ErrorClass(ErrorAlreadyAssigned, "Error: Already Assigned"),
new ErrorClass(ErrorBadDevice, "Error: Bad Device"),
new ErrorClass(ErrorBadNetName, "Error: Bad Net Name"),
new ErrorClass(ErrorBadProvider, "Error: Bad Provider"),
new ErrorClass(ErrorCancelled, "Error: Cancelled"),
new ErrorClass(ErrorExtendedError, "Error: Extended Error"),
new ErrorClass(ErrorInvalidAddress, "Error: Invalid Address"),
new ErrorClass(ErrorInvalidParameter, "Error: Invalid Parameter"),
new ErrorClass(ErrorInvalidPassword, "Error: Invalid Password"),
new ErrorClass(ErrorMoreData, "Error: More Data"),
new ErrorClass(ErrorNoMoreItems, "Error: No More Items"),
new ErrorClass(ErrorNoNetOrBadPath, "Error: No Net Or Bad Path"),
new ErrorClass(ErrorNoNetwork, "Error: No Network"),
new ErrorClass(ErrorBadProfile, "Error: Bad Profile"),
new ErrorClass(ErrorCannotOpenProfile, "Error: Cannot Open Profile"),
new ErrorClass(ErrorDeviceInUse, "Error: Device In Use"),
new ErrorClass(ErrorExtendedError, "Error: Extended Error"),
new ErrorClass(ErrorNotConnected, "Error: Not Connected"),
new ErrorClass(ErrorOpenFiles, "Error: Open Files"),
new ErrorClass(ErrorSessionCredentialConflict, "Error: Credential Conflict"),
};
private static string GetError(int errNum)
{
foreach (var er in ErrorList)
{
if (er.Num == errNum) return er.Message;
}
return "Error: Unknown, " + errNum;
}
#endregion
#endregion
public static byte[] GetFileBytes(string serverSharedPath,string fileName, string userName, string password)
{
DisconnectFromShare($@"{serverSharedPath}", true); //Disconnect in case we are currently connected with our credentials;
var connectToShare = ConnectToShare($@"{serverSharedPath}", userName, password); //Connect with the new credentials
if (!string.IsNullOrEmpty(connectToShare))
return new byte[0];
if (!Directory.Exists($@"{serverSharedPath}"))
return new byte[0];
if (!File.Exists($@"{serverSharedPath}\{fileName}"))
return new byte[0];
return File.ReadAllBytes(
$@"{serverSharedPath}\{fileName}");
}
public static bool DeleteFileFromSharedPath(string serverSharedPath, string fileName, string userName,
string password)
{
DisconnectFromShare($@"{serverSharedPath}", true); //Disconnect in case we are currently connected with our credentials;
var connectToShare = ConnectToShare($@"{serverSharedPath}", userName, password); //Connect with the new credentials
if (!string.IsNullOrEmpty(connectToShare))
return false;
if (File.Exists($@"{serverSharedPath}\{fileName}"))
{
try
{
File.Delete($@"{serverSharedPath}\{fileName}");
return true;
}
catch (IOException exception)
{
return false;
}
}
return true;
}
public static bool WriteFileByte(string serverSharedPath, string fileName, byte[] fileBytes, string userName, string password)
{
DisconnectFromShare($@"{serverSharedPath}",
true); //Disconnect in case we are currently connected with our credentials;
var connectToShare =
ConnectToShare($@"{serverSharedPath}", userName, password); //Connect with the new credentials
if (!string.IsNullOrEmpty(connectToShare))
return false;
if (!Directory.Exists($@"{serverSharedPath}"))
return false;
if (File.Exists($@"{serverSharedPath}\{fileName}"))
File.Delete($@"{serverSharedPath}\{fileName}");
File.WriteAllBytes($@"{serverSharedPath}\{fileName}", fileBytes);
return true;
}
public static bool IsNetworkConnectivityOk(string serverSharedPath, string userName, string password)
{
DisconnectFromShare($@"{serverSharedPath}", true); //Disconnect in case we are currently connected with our credentials;
var connectToShare = ConnectToShare($@"{serverSharedPath}", userName, password); //Connect with the new credentials
if (!string.IsNullOrEmpty(connectToShare))
return false;
if (!Directory.Exists($@"{serverSharedPath}"))
return false;
DisconnectFromShare($@"{serverSharedPath}", false); //Disconnect from the server.
return true;
}
}
公共静态类网络共享
{
///
///连接到远程共享
///
///如果成功,则为Null,否则为错误消息。
公共静态字符串ConnectToShare(字符串uri、字符串用户名、字符串密码)
{
//创建netresource并将其指向共享
var nr=新的网络资源
{
dwType=ResourcetypeDisk,
lpRemoteName=uri
};
//创建共享
var ret=WNetUseConnection(IntPtr.Zero,nr,密码,用户名,0,null,null,null);
//检查错误
return ret==NoError?null:GetError(ret);
}
///
///从缓存中删除共享。
///
///如果成功,则为Null,否则为错误消息。
公共静态字符串DisconnectFromShare(字符串uri,bool-force)
{
//删除共享
var ret=WNetCancelConnection(uri,force);
//检查错误
return ret==NoError?null:GetError(ret);
}
#地区P/P
[DllImport(“Mpr.dll”)]
私有静态外部int WNetUseConnection(
IntPtr hwndOwner,
Netresource lpNetResource,
字符串密码,
字符串lpUserId,
int dwFlags,
字符串lpAccessName,
字符串大小,
字符串lpResult
);
[DllImport(“Mpr.dll”)]
私有静态外部内部所有者取消连接(
字符串名称,
布尔福斯
);
[StructLayout(LayoutKind.Sequential)]
私有类网络资源
{
公共int dwScope=0;
公共int dwType=0;
public int dwDisplayType=0;
公共int dwUsage=0;
公共字符串lpLocalName=“”;
公共字符串lpRemoteName=“”;
公共字符串lpComment=“”;
公共字符串lpProvider=“”;
}
#区域常数
const int ResourcetypeDisk=0x00000001;
const int ConnectUpdateProfile=0x00000001;
#端区
#区域误差
常数int NoError=0;
const int ErrorAccessDenied=5;
常数int ERRORALDEASSIGNED=85;
常数int ERRORBADEVENT=1200;
const int ErrorBadNetName=67;
常量int ErrorBadProvider=1204;
常数int ERROR CANCELED=1223;
常量int ERRORSTENDERROR=1208;
const int ErrorInvalidAddress=487;
常数int ErrorInvalidParameter=87;
const int ErrorInvalidPassword=1216;
常数int ErrorMoreData=234;
const int errornomoreims=259;
常量int ErrorNoNetOrBadPath=1203;
常数int ErrorNoNetwork=1222;
const int ErrorSessionCredentialConflict=1219;
常数int ErrorBadProfile=1206;
常数int ErrorCannotOpenProfile=1205;
常数int ERROR DEVICEINUSE=2404;
常数int ErrorNotConnected=2250;
const int ErrorOpenFiles=2401;
私有结构错误类
{
公共整数;
公共字符串消息;
公共错误类(整数,字符串消息)
{
this.Num=Num;
this.Message=消息;
}
}
私有静态只读ErrorClass[]ErrorList=新ErrorClass[]{
新的ErrorClass(ErrorAccessDenied,“错误:访问被拒绝”),
新的ErrorClass(ErrorAlreadyAssigned,“错误:已分配”),
新的ErrorClass(ErrorBadDevice,“错误:坏设备”),
新的ErrorClass(ErrorBadNetName,“错误:错误的网络名”),
新的ErrorClass(ErrorBadProvider,“错误:错误提供程序”),
新的ErrorClass(ErrorCancelled,“Error:Cancelled”),
新的ErrorClass(ErrorExtendedError,“错误:扩展错误”),
新的ErrorClass(ErrorInvalidAddress,“错误:无效地址”),
新的ErrorClass(ErrorInvalidParameter,“错误:无效参数”),
新的ErrorClass(ErrorInvalidPassword,“错误:无效密码”),
新的ErrorClass(ErrorMoreData,“错误:更多数据”),
新的ErrorClass(ErrorNoMoreItems,“错误:无更多项”),
新的ErrorClass(ErrorNoNetOrBadPath,“错误:无网络或错误路径”),
新的ErrorClass(ErrorNoNetwork,“错误:无网络”),
新的ErrorClass(ErrorBadProfile,“错误:错误配置文件”),
新的ErrorClass(ErrorCannotOpenProfile,“错误:无法打开配置文件”),
新的ErrorClass(ErrorDeviceUse,“错误:正在使用的设备”),
新的ErrorClass(ErrorExtendedError,“错误:扩展错误”),
新的ErrorClass(ErrorNotConnected,“错误:未连接”),
新的ErrorClass(ErrorOpenFiles,“错误:打开文件”),
新的ErrorClass(ErrorSessionCredentialConflict,“错误:凭证冲突”),
};
私有静态字符串GetError(int errNum)
{
foreach(错误列表中的变量)
{
if(er.Num==errNum)返回er.Message;
}
返回“错误:未知,”+errNum;
}
#端区
#端区
公共静态字节[]GetFileBytes(字符串服务器共享路径、字符串文件名、字符串用户名、字符串密码)
{
DisconnectFromShare($@“{serverSharedPath}”,true);//如果我们当前使用凭据连接,请断开连接;
变量