【发布时间】:2015-06-29 09:02:39
【问题描述】:
在 azure 网站上托管我的网站/请求时,我在尝试读取存储在网络驱动器上的文件时遇到问题。
代码可以在本地机器上进行测试,它也可以在我们拥有另一个客户端并完全控制的专用服务器上运行,但是当我们尝试读取文件时它会出现以下错误。
对路径“\xxx.xxx.xxx.xxx\abc\abc.xml”的访问被拒绝。
我想知道 Azure 是否被锁定以防止这种我不知道的行为。可能是端口关闭之类的。
我正在使用的代码
if (impersonate.impersonateValidUser("username", "domain.com", "password"))
{
message = "impersonate ok";
if (!System.IO.File.Exists(file))
{
message = "no file";
impersonate.undoImpersonation();
}
using (StreamReader reader = File.OpenText(file))
{
message = "";
XmlSerializer deserializer = new XmlSerializer(typeof(TextModeSchema));
schema = (TextModeSchema)deserializer.Deserialize(reader);
reader.Close();
}
}
它使用了我们在很多地方使用的基本模拟类
public class Impersonate : IDisposable
{
public const int LOGON32_LOGON_INTERACTIVE = 2;
public const int LOGON32_LOGON_NETWORK = 3;
public const int LOGON32_LOGON_BATCH = 4;
public const int LOGON32_LOGON_SERVICE = 5;
public const int LOGON32_LOGON_UNLOCK = 7;
public const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;
public const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
public const int LOGON32_PROVIDER_DEFAULT =0;
public const int LOGON32_PROVIDER_WINNT35 =1;
public const int LOGON32_PROVIDER_WINNT40 =2;
public const int LOGON32_PROVIDER_WINNT50 = 3;
WindowsImpersonationContext impersonationContext;
[DllImport("advapi32.dll")]
public static extern int LogonUserA(String lpszUserName,
String lpszDomain,
String lpszPassword,
int dwLogonType,
int dwLogonProvider,
ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int DuplicateToken(IntPtr hToken,
int impersonationLevel,
ref IntPtr hNewToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool RevertToSelf();
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool CloseHandle(IntPtr handle);
public bool impersonateValidUser(String userName, String domain, String password)
{
WindowsIdentity tempWindowsIdentity;
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
if (RevertToSelf())
{
if (LogonUserA(userName, domain, password, LOGON32_LOGON_NEW_CREDENTIALS,
LOGON32_PROVIDER_DEFAULT, ref token) != 0)
{
if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
{
tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
impersonationContext = tempWindowsIdentity.Impersonate();
if (impersonationContext != null)
{
CloseHandle(token);
CloseHandle(tokenDuplicate);
return true;
}
}
}
}
if (token != IntPtr.Zero)
CloseHandle(token);
if (tokenDuplicate != IntPtr.Zero)
CloseHandle(tokenDuplicate);
return false;
}
public void undoImpersonation()
{
impersonationContext.Undo();
}
public void Dispose()
{
impersonationContext.Undo();
GC.Collect();
}
}
如果在 azure 上不允许这样做,有没有人知道我们可以绕过它而无需设置完整的虚拟机的方法?理想情况下,我想保留一个 azure 网站/webapp。
【问题讨论】: