I want to open a native SharePoint 2010 page from my application (for example the Edit Properties page of a document) without the need to enter username/password, but instead to authenticate silently (prior or during the page request). is that possible?
In other words, i have a windows forms application, i enter a sharepoint document path and i click on a button, this will open up a windows form with a browser control that will navigate to the native "editform.aspx" sharepoint 2010 page for this document.Is there a way to authenticate the user without the need for him to enter his credentials?
Thanks,
There is no way to pass credentials on the first visit to the SharePoint site. But if you are using an authentication option that allows saving (especially NTML) and the user's browser settings allow for saved passwords, then subsequent logins will be automatic. This would be same experience if they were to open a browser and navigate directly to the EditForm.aspx URL.
In IE you can set the "Automatic Login" settings in the Advanced Options. It treats URLs differently based on the zone, so it would be simpler if your page is in the user's "Intranet Zone".
If you set it up correctly, the first time they user your SharePoint site they will be prompted but every time after that they will be automatically logged in.
YOu could try setting the PreAuthenticate property of the WebRequest (which i assume your using). Although I have to admit to have seen similar questions with mixed results.
The logon challenge screen you get is inherent to NTLM:
from the NTLM wiki page:
"First, the client establishes a network path to the server and sends a NEGOTIATE_MESSAGE advertising its capabilities.[11] Next, the server responds with CHALLENGE_MESSAGE which is used to establish the identity of the client.[12] Finally, the client responds to the challenge with a AUTHENTICATE_MESSAGE".
And more about PreAuthenticate (MSDN):
"With the exception of the first request, the PreAuthenticate property indicates whether to send authentication information with subsequent requests without waiting to be challenged by the server. When PreAuthenticate is false, the WebRequest waits for an authentication challenge before sending authentication information."
By doing what Peter suggested (adding the site to your IE's Intranet Zone means your credentials will be cached and webrequest uses these cached requests and honors the settings in IE.
Related
I have set up SharePoint 2013 for my organization but the users have to always enter a domain (User1#domain.com) after their username.
I have searched but i cant find any solution or even where the file for this is located. I'm wondering if i can get some help either finding where that file is or an alternate solution for this issue. Thanks!
Switching my authentication type is not really an option either, and yes I want the user to be promoted for the password every time.
On the SharePoint server I went to IIS, clicked on the local host tree then in the center console under IIS I opened up Authentication. Click basic authentication then under actions click edit. Once there I entered a default domain name and voila, like magic it now works!
So if i understand correctly here your SharePoint farm domain (e.g. sharepoint.com) and users domain (user#companyXYZ) don't have a "trust relationship?.
When you access a office document from a library as an Untrusted Client (even though your login credentials are already authenticated by the browser session cookie) when an Office Application opens, IE does not pass authentication/trust/token to the next application to gain the same access that is already trusted with IE. The additional log-in prompts is because the documents opened with Office are trying to re-establish a trust per application, because the client machine is not trusted from a public web and a new authentication is requested.
May want to review : Authentication prompts when opening Microsoft Office documents
If you can provide a fiddler trace of an authentication and identify if you are using "classic" or "claims" i can help more.
I have a few websites which allow both anonymous and window auth users at the same time. Basically if you hit the site with IE or Webkit based browsers on a windows system, the server instantly recognizes your active directory user and group.
In the past I've provided a link to a windows auth only page which allows the current user to login, or bounce back to where they started.
I find the management of this kind of frustrating as I need to make certain that IIS has the correct security settings for that single page after every deployment.
Is there a better way for me to allow a user to elevate from anon to authenticated?
There is no other way to do that elevation automatically. The server can't know that the current user is a Windows user and elevate them, or automatically redirect them to the Windows auth only page. On the other hand, if every user will get through the Windows auth only page, all of them which are not inside the domain will see the challenge/response dialog box (user + password).
As for the management part of making sure that this special page has the correct security settings, you can (and should) automate the check somehow. For example, by querying the IIS metabase for that setting when the application starts (in Global.asax) and if the setting is not there, log it as an email message or so.
Personally I prefer a different attitude - a special "integration/deployment" page which contains a series of tests against my application so I can make sure everything's set up correctly on the server, i.e. NTFS write permissions to certain folders, availability of the SMTP server set in web.config to send emails through, etc.
Note: You're using Windows authentication along with anonymous access. Just keep in mind that if you consider implementing Forms Authentication in the future, a misarchitecture (I don't know if by design or due to a flaw) of IIS 7 does not allow you to set the app to be Forms Authentication and set one specific page to be Windows Authentication. The override just doesn't work and it's very frustrating.
Good luck!
OK, I figured out a fairly nice way to do this...however it's not as elegant as I had hoped since it doesn't work across applications.
Basically, if you create a single page within your Anon + Integrated Auth IIS6 website or virtual directory, let's call it auth.aspx, then you can use this page to prompt authentication.
Go into IIS settings and specify that auth.aspx is Integrated Auth ONLY (no anon). Then create a hidden iframe somewhere on your page. I then created a simple JavaScript action to update the src attribute of the iframe to the auth.aspx page. This forces the browser to try and authenticate using NTLM. Once you enter valid credentials you've successfully elevated your current user beyond the generic anonymous user.
One final touch was to then include a Response.Redirect into the auth.aspx which reloads the current page. Assuming your ASP.net session tokens are set correctly, the page will reload and the user will be authenticated.
Is this possible to make an application that allows us to make an application that has 4 web browser controls and we can independently use each browser control for different Login on same website.
Lets say i have one web browser dealing with hotmail with Office Email
where as Second web browser control dealing with hotmail with Personal Email
Currently i have searched that web browser cannot have different PROXIES or USER-Agent Strings.
Any Solutions?
Moving my comments as an answer.
Authentication is tied to an auth ticket. Find out how is the ticket sent to the service (cookie, url, form) and apply it to your controls.
URL and form auth should work right away without any changes - I see these used a lot in PHP apps.
Maybe setting that you do not accept cookies will force this mode - if the service supports automatic auth mode switching (eg. WebForms with cookieless="AutoDetect").
Otherwise try webBrowser.Document.Cookie to change the auth cookies - this works out of the box with WinForms.
You need to cast the Document and add reference to the COM "Microsoft HTML Object Library" in WPF:
string cookie = (webBrowser.Document as mshtml.IHTMLDocument2).cookie;
You can also try doing web requests manually with CookieContainer and use the WebBrowser control only for visualization. You should probably read some pages on authentication.
Basically you need to send different cookies to different services.
I wonder if the following is possible.
A user logs in on my website, using a username and password using his default browser.
Later on, my C# program is run on the same PC. I want to check if the user is logged in in the default browser, so I can access a webpage that is in the registered-only area. Is this somehow possible?
I number of possibilities come to mind:
You could check their cookie folder for a valid cookie for your site
Check the browser history (perhaps using a toolbar)
Use the web browser control so that users log-in through your app
I have never seen either of the above in practice.
I think the best method would be to set up the site to ask for credentials if they're not logged in - so the user can enter them and continue. You'll find this method in most (if not all) of the major websites out there that have client installed software (such as the Gmail Notifier)
You could possibly do it with a cookie saved on the machine, you would need to find where its stored and the naming of the cookie or some kind of api to read the cookie.
here is a few links
http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.cookiecontainer.aspx
http://msdn.microsoft.com/en-us/library/system.windows.application.getcookie.aspx
http://bytes.com/topic/c-sharp/answers/677862-reading-creating-cookies-local-machine-using-windows-application
http://www.codeproject.com/Messages/2981086/How-to-read-cookies-in-winforms-Net.aspx
I have an application buit partially in classic asp and in c#. The authentication used as
per the config file is windows. This is perfectly working.
Now I have to authenticate the users against active directory. (ie. if any AD users
requesting my application, it should authenticate the user (on login page load) and redirect
to the application home page instead of showing login page)
The login page is an asp page and I created an aspx page where the login.asp page will be
redirected during page load to autheticate with Active Directory. I hav e disabled anonymous
access in IIS and currently used only Integrated Windows Authentication. Also given
permission to "Authenticated Users" in Permissions.
While trying to access the login.asp page I am getting the following error.
You do not have permission to view this directory or page using the credentials that you
supplied because your Web browser is sending a WWW-Authenticate header field that the Web
server is not configured to accept.
Please try the following:
Contact the Web site administrator if you believe you should be able to view this directory
or page.
Click the Refresh button to try again with different credentials.
HTTP Error 401.2 - Unauthorized: Access is denied due to server configuration.
Internet Information Services (IIS)
Kindly help me to fix this issue.
Thanks,
Priya
401.2 isn't usually an "error", per se. It's an authentication challenge. Your browser is not responding properly to the challenge it's being presented with. If the browser doesn't understand what's going on, it will just give up and show you 401.2 as an error.
The question is: what browser are you using? Try IE first. IE is very forgiving with NTLM and Kerberos challenges. If you're using Firefox, you will need to set it up to use integrated windows authentication by adding your domain names to the network.automatic-ntlm-auth.trusted-uris and network.negotiate-auth.trusted-uris settings in the about:config screen.
You could also be running into an issue where you have not properly defined a Service Principal Name for your service account. How that works would depend on how your website is running -- is it running under a domain account or under NETWORK SERVICE? If NETWORK SERVICE, this probably isn't your problem.