C# - How To Get At The Current Users Windows Identity
Mar 8, 2011
The site is running on my local IIS 6.1. I Would like to add some features to pull information from our AD. My AD code works on many other projects and on my dev server. Here are my attempts at writing out the username:
Response.Write("1. " + this.Request.LogonUserIdentity.Name);
Response.Write("2. " + Request.ServerVariables["Auth_User"]);
Response.Write("3. " + WindowsIdentity.GetCurrent().Name.ToString());
The results I get are:
NT AUTHORITYIUSR
administrator
NT AUTHORITYNETWORK SERVICE
How can I get at the actual windows username like ourdomain/username
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Feb 20, 2010
I have a web application using Forms authentication provided by AD. I would like to know if it's possible to use EWS to send mail as the currently logged in user without having to supply credentials, or; would I be required to set up an account with impersonating access which will send mail on behalf of the currently logged in user?
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Mar 1, 2011
We are observing some strange behaviour in our web server logs where where the Identity of the currently logged in user seems to be getting swapped with another user. I will describe our set up before explaining further.
We are running an asp.net web site (v3.5 of the framework) on 2 Windows 2008 web servers and use forms authentication.They are load balanced using a separate server running Apache 2.2 on Linux (Cent OS 5). The load balancing simply attaches a cookie to a user and directs them to a particular server for each subsequent request.
We notice on occasion patterns in the log like this (details obfuscated)
First Log Entry
UserName - customer1@x.com
UserId - 1111
WebPage - page1
IP - ip1
Time - 2010-06-29 12:56:20.750
SessionId - h3uyz2fsdfegugjy452sdz0far.........
We are using forms authentication using the standard asp.net forms authentication framework (the standard login control and we implemented a custom membership provider).
The UserName is the Windows identity retrieved using "HttpContext.Current.User.Identity.Name" The UserId is the database Id set in the session. The sessionId is retrieved using "HttpContext.Current.Session.SessionID"
As you can see the same Windows identity is the same for 2 different users, under different IP addresses and with different session id's, hitting the site about the same time. We checked and the IP's were from totally different locations. The wrong windows identity seems to be getting recorded. UserId 2222 should have a different username recorded.
Since it happens very occasionally, the code is standard and has not changed substantially for some time we don't "think" it is a coding error. We presume either a problem with the load balancer or some problem in the web server. I have never heard of such problems in asp.net before.
The forms authentication entry in the web.config is
authentication mode="Forms"
forms loginUrl="LoginPage.aspx" name=".ASPXFORMSAUTH"
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Jan 30, 2011
get the below error. My application was working fine until I probably modified something, but don't know what.
Server Error in '/' Application.
Method is only supported if the user name parameter matches the user name in the current Windows Identity.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Configuration.Provider.ProviderException: Method is only supported if the user name parameter matches the user name in the current Windows Identity.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[ProviderException: Method is only supported if the user name parameter matches the user name in the current Windows Identity.]
System.Web.Security.WindowsTokenRoleProvider.GetCurrentWindowsIdentityAndCheckName(String userName) +2195661
System.Web.Security.WindowsTokenRoleProvider.GetCurrentTokenAndCheckName(String userName) +36
System.Web.Security.WindowsTokenRoleProvider.GetRolesForUser(String username) +61
System.Web.Security.RolePrincipal.IsInRole(String role) +182....
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Oct 20, 2010
am writing a web service in vb.net/asp.net 2, that needs user's name. It works fine when the url request is "www.mysite.com" but if any one has logged-in using "mysite.com" without a "www" and goes to the page that calls my web service, The HttpContext.Current.User.Identity.Name gives null. How can I resolve this problem?
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Feb 9, 2010
I have an asp.net web app that uses forms-based authentication, a SqlMembershipProvider (using an encrypted password format), and a SqlRoleProvider. I need to know if it's possible to administer the users (create new users, assign them to roles, etc.) from a windows application - the powers that be don't want any administrative functionality in the web app itself.
Here is the membership provider definition from web.config:
[code]....
So, obviously, I have a Sql Server database that contains the users and roles for the web app. I'd like to create a separate windows app that references the web app assembly, and use the configured MembershipProvider, RoleProvider, and machineKey to create users, assign users to roles, etc. If that's not possible, I can duplicate the configuration settings from web.config within the windows app. But I don't know how to do this either.
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Mar 1, 2011
So I'm making a asp.net login. I want the login name that people use to match an id in my SQL database. So that I can retrieve their information. But currently when I use the code below, from which I get the name of the computer I am currently on. However I would like the user Identity to be what they write in the username textbox at the login screen.
If HttpContext.Current.User.Identity.IsAuthenticated Then
Dim userName As String = HttpContext.Current.User.Identity.Name
Response.Write(userName)
End If
So I looked for it on net and I think it might have something to do with my web.config file. As I'm totally new to asp.net I wouldn't know. However here's a part of my Web.config file.
[Code]....
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Feb 26, 2010
I'm in the middle of moving a web application from IIS6 to IIS7. I've enabled "Windows Authentication" and added <deny users="?" /> to the authorization section of my web.config file. When the app was running on IIS6 my users where able to access the web app without logging in because their windows login was automatically recognized. This does not seem to be the case in II7. I can not get a value for "Current.User.Identity.Name" in my ASP.Net code.
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May 20, 2010
The scenario is that I wanna insert a record to the database via INSERT query and I need to user the identity number of this record in the INSERT query.
But I don't know how to achieve this.
Here is my table structure and code for your better understanding.
There are three columns in the Table: categoryID, categoryName, categoryPath. I need the path based on the categoryID which is an identity int column.
Now I used this code to do INSERT:
[Code]....
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May 14, 2010
I have created an ExtendedId class which extends GenericIdentity. (This stores Id as well as name)
In a httpmodule I stored this extended id in Current.User like so:
HttpContext.Current.User = new GenericPrincipal(myExtendedId, roles);
Problem is, later, how do I get at my ExtendedId type again?
If I try this:
ExtendedId eId = (ExtendedId)HttpContext.Current.User.Identity;
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Jan 10, 2010
I got this error when I try to browse my default.aspx and I think this problem cause from my web.config. Take a look on my web.config file.
The current identity (Butterfly-PCWebsite) does not have write access to 'C:WindowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files'.
Exception Details: System.Web.HttpException: The current identity (Butterfly-PCWebsite) does not have write access to 'C:WindowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files'.
Code: <?xml version="1.0" encoding="UTF-8"?> <!--
Note: As an alternative to hand editing this file you can use the web admin tool to configure settings for your application. Use the Website->Asp.Net Configuration option in Visual Studio. A full list of settings and comments can be found in machine.config.comments usually located in WindowsMicrosoft.NetFrameworkv2.xConfig
<configuration>
<appSettings />
<connectionStrings>
<add name="csACC" connectionString="server=localhost;User Id=root;Persist Security Info=True;database=acc" providerName="MySql.Data.MySqlClient" />
<add name="csAgent2" connectionString="server=localhost;User Id=root;database=acc" providerName="MySql.Data.MySqlClient" />
<add name="masterConnectionString" connectionString="Data Source=BUTTERFLY-PCSQLEXPRESS;Initial Catalog=master;Integrated Security=True" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging symbols into the compiled page. Because this affects performance, set this value to true only during development.
Visual Basic options:
Set strict="true" to disallow all data type conversions where data loss can occur.
Set explicit="true" to force declaration of all variables. -->
<compilation debug="true" strict="false" explicit="true" />
<pages>
<namespaces>
<clear />
<add namespace="System" />
<add namespace="System.Collections" />
<add namespace="System.Collections.Specialized" />
<add namespace="System.Configuration" />
<add namespace="System.Text" />
<add namespace="System.Text.RegularExpressions" />
<add namespace="System.Web" />
<add namespace="System.Web.Caching" />
<add namespace="System.Web.SessionState" />
<add namespace="System.Web.Security" />
<add namespace="System.Web.Profile" />
<add namespace="System.Web.UI" />
<add namespace="System.Web.UI.WebControls" />
<add namespace="System.Web.UI.WebControls.WebParts" />
<add namespace="System.Web.UI.HtmlControls" />
</namespaces>
</pages>
<!--
The <authentication> section enables configuration of the security authentication mode used by ASP.NET to identify an incoming user. -->
<authorization>
<allow roles="administrators" />
<deny users="*" />
</authorization>
<!--
The <customErrors> section enables configuration of what to do if/when an unhandled error occurs during the execution of a request. Specifically, it enables developers to configure html error pages to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors> -->
</system.web>
<system.webServer>
<directoryBrowse enabled="true" />
</system.webServer>
</configuration>
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Jul 8, 2010
is possible to create another property like 'userid' as i can access like
HttpContext.Current.User.Identity.userid ? if yes , how? (actualy last year i did something like this but i have forgotten
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Sep 7, 2010
I create two pages, the first one is the login page with user name and password textboxes - (not asp login control) , when clicking login button I check the login authentication, if it is true redirect to default page. in the default page if !IsCallBack then i check httpcontext.current.user.identity.isauthenticated
if it is false i redirect the user to the login page. but my problem is that the httpcontext.current.user.identity.isauthenticated is always false.
Below the section of authentication in web config
[code]....
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Jun 28, 2010
I have installed and repaired .NET 4.0 already, and I can not figure out why IIS will not run 4.0 applications. I am running Windows 2003 R2, Sp2. IIS 6.0 I created a new ASP.NET Application in Visual Studio 2010, and published it to a site on my IIS. In IIS, I have selected it to run with 4.0, and my web.config also says to compile in 4.0 My First error was : Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive. (C:Inetpub...web.config line 22)
After some research, I found that my IIS had no v4.0 Web Service Extension setup. I thought this was odd, but I manually added it. New error was : The current identity (NT AUTHORITYNETWORK SERVICE) does not have write access to
C:WINDOWSMicrosoft.NETFrameworkv4.0.30319Temporary ASP.NET Files'.
After some research, I found I needed to add this folder, and give all rights to it. I know something is wrong, I shouldn't have to do this. My application is still erroring.. failing to load my ReportViewer :
Exception message: Could not load file or assembly 'Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
My research and I think my aspnet_regiis did not run properly.. so I trieto run this myself: but I get this error!!
-aspnet_regiis.exe - Application Error
-The application failed to initialize properly (0xc0000005). Click on OK to terminate the application.
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Mar 8, 2010
In my web application, an users identity is verified at the page load using his n/w credentials.Now i have this 'Adding Attachment' functionality which us creating the problem. I have to store the file in a different server which have access to only one userid. I guess i hv to impersonate the cuurent user with the other user id for this functionality alone
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Jul 30, 2010
I want to know if this kind of authentication is possible.
We have an Active Directory account and that account we are using to log in to windows. I have a simple system that needs authentication using the IIS log in box (i dont know what do you call this but what I know is it only comes out when Anonymous user is unchecked in the IIS configuration.) Now, I want this box to appear before my page and the user will be authenticated and be compare to the user who logged in to the windows. If the user who have been authenticated is the same as the user who logged in to the windwos then we will let him in if not he must be denied in accessing the page.
The first problem I have in my mind is how to code it in asp.net to make an authentication when he will try to access my page.
Second is, let us say we have succeeded to show the authentication box, how can I get the username from the log in box and compare it to the user who logged on in windows. Of course we can get the user id of the logged in user from the windows using User.Identity.Name but how about the username from the log in box.
Note: I will not use log in forms even using https. Just the log in provided by the IIS according to the configuration.
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Jan 21, 2010
I am having a problem with security in a web application I am building using Visual Web Developer 2008. I am using Forms Authentication:
<authentication mode="Forms">
<forms name=".MYAUTH" timeout="20" enableCrossAppRedirects="true" />
</authentication>
And a SQL Server database with ASP.NET Membership and Roles. I am using the LoginView control with the AnonymousTemplate and LoggedInTemplate to manage the user's interaction with logging in and out. The problem I am having is that I am authenticating the user against the database:
If Membership.ValidateUser(_userName, _txtLoginPass.Text)
Then returns True and:
FormsAuthentication.SetAuthCookie(_userName, False)
sets the cookie correctly:
FormsAuthentication.Decrypt(FormsAuthentication.GetAuthCookie(_userName, False).Values(0))
{System.Web.Security.FormsAuthenticationTicket} CookiePath: "/"
Expiration: #1/21/2010 1:42:27 PM#
Expired: False
IsPersistent: False
IssueDate: #1/21/2010 1:22:27 PM#
Name: "jaymo "
UserData: ""
Version: 2
but when I check
HttpContext.Current.User.Identity.IsAuthenticated it always returns False.
If done this before and it worked fine. I cannot find any mistake I might have made or where something might have changed between ASP.NET 2.0 and 3.5.
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Jan 18, 2010
We have an SharePoint site no login (anonymous) with a search module using AJAX. Now the users complains that the module isn't working. When I check the code (not developed by me), I find that the code only runs if "HttpContext.Current.User.Identity.IsAuthenticated=true". Could that ever return true on an anonymous site?
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Jan 17, 2011
i developed a simple web application. A label and a button. On click of Button, the label will display Hello World.
When I deploy this web application on my web server and access the URL, I get this error message.
The current identity (NT Authority/Network Service) does not have write access to C:WindowsMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files
I have tried the following -
Navigate to C:WindowsMicrosoft.NETFrameworkv2.0.50727 and typed the following command -
aspnet_regiis -ga "NT AuthorityNetwork Service"
After that also, it did not work.
We checked the permissions of the folder Temporary ASP.NET Files and for the Network Service user, we checked the Security Permissions and it has all the permissions as required.
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Oct 8, 2010
i try to publish my application , below the error i have, iam using
vista home edition
The current identity (NT AUTHORITYNETWORK SERVICE) does not have write access to 'C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Tem porary ASP.NET Files'.
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Nov 1, 2010
I have a web application with a login form. A user enters a user name and password. If they exist in the database the user is authenticated using these two lines:
[Code]....
The problem is that when a user logs in at first he is logged in as himself. When navigating on the web application for a while the user assumes the identity of another logged in user. This happens all the time. In my web.config the authentication mode looks like this:
[Code]....
The site does not use ASP.NET session variables. Instead each page initializes a Singleton class, which stores itself in a static class variable, always accessing the users data already read from the database. The Singleton implementation is:
[Code]....
Could the problem with assuming another logged in users "session" be related to static classes in my application or a Forms Authentication configuration or a configuration in IIS (e.g. is it possible for users to have their own process?).
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Jan 23, 2011
I have an requirement to implement single sign on solution using SAML 2. I had a look at a tirdparty toolkit in componentspace, but I would prefer some microsoft components.
the features provided in componentspace toolkit can be done using some Microsoft .NET libraries itself. identify the microsoft way to do this?. I looked at the Windows Identity Foundation SDK, but it is now supported only for .NET 3.5. My web application is built on .NET 2.0.
Is there any alternative for Windows Identity Foundation in .NET framework 2.0?
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Feb 7, 2011
In IIS 7.5 server I have a website apps.mydomain.com. Site binding for this website is:
IP: All Unassigned
Port: 80
Host name: apps.mydomain.com
In DNS there is an ip address pointing to apps.mydomain.com. Site comes up fine when browsing to this hostname.
I want to get current windows logged in username from asp.net web apps. I enabled windows authentication and disabled anonymous. Using this ASP.Net code to test:
Response.Write(Page.User.Identity.Name);
However, browsing to http://apps.mydomain.com/site/ the application pool identity shows as the Page.User.Identity.Name value and not the current windows logged in username.
If I browse to http://servername/site/ then Page.User.Identity.Name will return current windows logged in username.
Is there something else I need to configure to get the current windows logged in username when using host header?
web.config:
<?xml version="1.0"?>
<configuration>
<system.web>
<authentication mode="Windows"/>
</system.web>
</configuration>
App pool config (left out "handlers" for brevity, there's a 30000 char limit):
[Code]....
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Jan 4, 2011
I have this web application where I need the currently logged in windows user Identity. I server on which I deployed this application does not support virtual directories. And I am not sure if that server is configured for "Integrated Windows Authentication."
I tried using:
System.Security.Principal.WindowsIdentity.GetCurrent().Name;
Request.ServerVariables["AUTH_USER"];
HttpContext.Current.User.Identity.Name;
All these work and retrieve the appropriate currently logged in windows username when the application isn't deployed. But when I deploy it on this particular server, these methods do not give me nothing.
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Feb 1, 2010
I'm writing an ASP.net application that uses Windows Identity Foundation. My ASP.net application uses claims-based authentication with passive redirection to a security token service. This means that when a user accesses the application, they are automatically redirected to the Security Token Service where they receive a security token which identifies them to the application.
In ASP.net, security tokens are stored as cookies.
I want to have something the user can click on in my application that will delete the cookie and redirect them to the Security Token Service to get a new token. In short, make it easy to log out and log in as another user. I try to delete the token-containing cookie in code, but it persists somehow.
How do I remove the token so that the user can log in again and get a new token?
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