添加HTTPS绑定时的NullReferenceException在Microsoft.Web.Administration [英] NullReferenceException in Microsoft.Web.Administration when adding https binding
问题描述
我试图以编程方式添加绑定到我的默认网站但是我始终得到Microsoft.Web.Administration DLL中的空引用异常。本来我想与绑定一起分配证书。我能够查询，我想这个证书：
VAR店=新的X509Store（StoreName.Root，StoreLocation.LocalMachine ）;
store.Open（OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite）;
变种证书= store.Certificates.Find（X509FindType.FindByIssuerName，
TEST_SELF_SIGNED，真）
.OfType&所述; x509证书>（）FirstOrDefault（）;
这正常给我我想要的证书，这是为非空，并且有我的预期的信息。
网站网站= GetSite（默认Web站点）;
变种结合= site.Bindings.Add（*：443，certificate.GetCertHash（），HTTPS）;
既然没有我的变量或在示例代码中任何其他项目都是空（包括GetCertHash返回20字节数组）我很困惑，为什么我在这里得到一个空。我甚至尝试以下过载：
site.Bindings.Add（*：443，https开头）;
和我仍然得到同样的空REF堆栈：
System.NullReferenceException了未处理
消息=对象未设置为一个对象的实例引用。
来源= Microsoft.Web.Administration
堆栈跟踪：
在Microsoft.Web.Administration.Configuration.SetDirty（）
在Microsoft.Web.Administration.ConfigurationElement.SetDirty（）
。在Microsoft.Web.Administration.ConfigurationElement.SetAttributeValue（字符串的attributeName，对象的值）
在Microsoft.Web.Administration.Binding.SetBindingProperty（字符串的attributeName，字符串值）
在Microsoft.Web。 Administration.BindingCollection.Add（字符串bindingInformation，字节[] certificateHash，字符串certificateStoreName）
在TestApp.Program.Main（字串[] args）在C：\Projects\Cube\trunk\src\ AutoUpdate\TestApp\Program.cs：行33
在System.AppDomain._nExecuteAssembly（RuntimeAssembly组装，字串[] args）
在System.AppDomain.ExecuteAssembly（字符串assemblyFile，证据assemblySecurity，字符串[ ]参数）
在Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly（）
在System.Threading.ThreadHelper.ThreadStart_Context（对象状态）
在System.Threading.ExecutionContext.Run（ExecutionContext中的ExecutionContext ，ContextCallback回调，对象状态，布尔ignoreSyncCtx）
在System.Threading.ExecutionContext.Run（ExecutionContext中的ExecutionContext，ContextCallback回调，对象状态）在System.Threading.ThreadHelper.ThreadStart（）
的InnerException：
下面是一个完整的测试应用程序，demonstartes问题，与我用来生成样品证书selfssl命令行参数一起：
selfssl.exe / T / N：CN = TEST_SELF_SIGNED / K：512 / V：9999 / Q
类节目
{
静态无效的主要（字串[] args）
{$ b $使用b
（ServerManager的经理=新ServerManager的（））
{
变种店=新的X509Store（StoreName.Root，StoreLocation.LocalMachine）;
store.Open（OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite）;
变种证书= store.Certificates.Find（X509FindType.FindByIssuerNameTEST_SELF_SIGNED，真）.OfType&所述; x509证书>（）FirstOrDefault（）;
位的网站= GetSite（默认Web站点）;
site.Bindings.Add（*：443，certificate.GetCertHash（），store.Name）;
store.Close（）;
manager.CommitChanges（）;
}
}用
公共静态网站GetSite（字符串站点名称）
{
（VAR ServerManager的=新ServerManager的（））
{
返回serverManager.Sites.Where（p值=> p.Name.ToLower（）== siteName.ToLower（））FirstOrDefault（）;
}
}
}
只是为了掩饰我的基地， IIS的安装和手动分配证书的作品就好了。
于是我找到了答案通过反编译的Microsoft.Web.Administration DLL并通过烟囱戳。事实证明，如果你得到一个网站具有辅助功能的它不设置该网站上的内部ServerManager的属性。
这导致问题该DLL函数这Microsoft.Web.Administration ::配置
内部空间使用setDirty（）
{
如果（ this._hasBeenCommitted || this._configurationManager.Owner.ReadOnly）
抛出新的InvalidOperationException异常（Resources.ObjectHasBeenCommited）;
this._isDirty = TRUE;
}
这本来是空在这里要么 _configurationManager.Owner 。我查了一下所有者是，这是一个 ServerManager的这通风报信我送行，我也许应该查询网站。一旦我做到了零裁判走了，一切正常。这是不幸的，他们没有检查空的，但也许假设是没有人会采取行动，而不服务器管理器上下文站点对象上。
不管怎样，下面是更新代码：
类节目
{
静态无效的主要（字串[] args）
{使用（VAR ServerManager的=新ServerManager的（））
{
VAR selfSignedCnName =TEST_SELF_SIGNED
;
VAR websiteName =默认Web站点;
变种站点= serverManager.Sites.Where（p值=> p.Name.ToLower（）== websiteName.ToLower（））FirstOrDefault（）;
变种店=新的X509Store（StoreName.Root，StoreLocation.LocalMachine）;
store.Open（OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite）;
无功证书= store.Certificates.Find（X509FindType.FindByIssuerName，selfSignedCnName，真）.OfType<&x509证书GT;（）FirstOrDefault（）。
site.Bindings.Add（*：443：，certificate.GetCertHash（），store.Name）;
store.Close（）;
serverManager.CommitChanges（）;
}
}
}
这也是从我最初的职位，包裹在服务器管理器中的整个代码块并不意味着什么明确的，他们没有级联。你必须采取行动，从它来自服务器管理网站上。
I'm trying to programmatically add a binding to my default website however I am consistently getting a null reference exception within the Microsoft.Web.Administration dll. Originally I wanted to assign a certificate along with the binding. I was able to query the certificate that I wanted with this:
var store = new X509Store(StoreName.Root, StoreLocation.LocalMachine);
store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite);
var certificate = store.Certificates.Find(X509FindType.FindByIssuerName,
"TEST_SELF_SIGNED", true)
.OfType<X509Certificate>().FirstOrDefault();
This properly gave me the certificate I wanted, it was non-null and had the information I expected.
Site site = GetSite("Default Web Site");
var binding = site.Bindings.Add("*:443", certificate.GetCertHash(), "https");
Given that none of my variables or any other items in the sample code are null (including GetCertHash which returns a 20 byte array) I'm confused as to why I'm getting a null here. I even tried the following overload:
site.Bindings.Add("*:443", "https");
And I still get the same null ref stack:
System.NullReferenceException was unhandled
Message=Object reference not set to an instance of an object.
Source=Microsoft.Web.Administration
StackTrace:
at Microsoft.Web.Administration.Configuration.SetDirty()
at Microsoft.Web.Administration.ConfigurationElement.SetDirty()
at Microsoft.Web.Administration.ConfigurationElement.SetAttributeValue(String attributeName, Object value)
at Microsoft.Web.Administration.Binding.SetBindingProperty(String attributeName, String value)
at Microsoft.Web.Administration.BindingCollection.Add(String bindingInformation, Byte[] certificateHash, String certificateStoreName)
at TestApp.Program.Main(String[] args) in C:\Projects\Cube\trunk\src\AutoUpdate\TestApp\Program.cs:line 33
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: Here is a full test-app that demonstartes the issue, along with the selfssl command line arguments I used to generate the sample certificate:
selfssl.exe /T /N:CN=TEST_SELF_SIGNED /K:512 /V:9999 /Q
class Program
{
static void Main(string[] args)
{
using (ServerManager manager = new ServerManager())
{
var store = new X509Store(StoreName.Root, StoreLocation.LocalMachine);
store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite);
var certificate = store.Certificates.Find(X509FindType.FindByIssuerName, "TEST_SELF_SIGNED", true).OfType<X509Certificate>().FirstOrDefault();
Site site = GetSite("Default Web Site");
site.Bindings.Add("*:443", certificate.GetCertHash(), store.Name);
store.Close();
manager.CommitChanges();
}
}
public static Site GetSite(string siteName)
{
using (var serverManager = new ServerManager())
{
return serverManager.Sites.Where(p => p.Name.ToLower() == siteName.ToLower()).FirstOrDefault();
}
}
}
Just to cover my bases, Iis is installed and manually assigning the certificate works just fine.
So I found the answer by decompiling the Microsoft.Web.Administration dll and poking through the stack. It turns out that if you get a Site with a helper function it doesn't set the internal ServerManager property on the site.
The function the dll that caused the issue was this in Microsoft.Web.Administration::Configuration
internal void SetDirty()
{
if (this._hasBeenCommitted || this._configurationManager.Owner.ReadOnly)
throw new InvalidOperationException(Resources.ObjectHasBeenCommited);
this._isDirty = true;
}
The only thing that could have been null here was either _configurationManager or _configurationManager.Owner. I checked what Owner was and it was a ServerManager which tipped me off that I should probably query the Site from within a using block of server manager. Once I did that the null ref went away and everything worked. It's unfortunate that they aren't checking for null's but maybe the assumption is nobody would ever act on a site object without the server manager context.
Anyways, here is the updated code:
class Program
{
static void Main(string[] args)
{
using (var serverManager = new ServerManager())
{
var selfSignedCnName = "TEST_SELF_SIGNED";
var websiteName = "Default Web Site";
var site = serverManager.Sites.Where(p => p.Name.ToLower() == websiteName.ToLower()).FirstOrDefault();
var store = new X509Store(StoreName.Root, StoreLocation.LocalMachine);
store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite);
var certificate = store.Certificates.Find(X509FindType.FindByIssuerName, selfSignedCnName, true).OfType<X509Certificate>().FirstOrDefault();
site.Bindings.Add("*:443:", certificate.GetCertHash(), store.Name);
store.Close();
serverManager.CommitChanges();
}
}
}
It's also clear from my initial post that wrapping the entire code block in a server manager doesn't mean anything, they aren't cascaded. You have to act on the site from the server manager it came from.
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