Below is the code I am using: I get an access denied even though I am impersonating with an account that is in the Administrators group.
SafeTokenHandle safeTokenHandle;
string userName, domainName;
// Get the user token for the specified user, domain, and password using the
// unmanaged LogonUser method.
// The local machine name can be used for the domain name to impersonate a user on this machine.
const int LOGON32_PROVIDER_DEFAULT = 0;
//This parameter causes LogonUser to create a primary token.
const int LOGON32_LOGON_INTERACTIVE = 2;
// Call LogonUser to obtain a handle to an access token.
bool returnValue = LogonUser(username, domain, password,
LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, out safeTokenHandle);
if (false == returnValue)
{
int ret = Marshal.GetLastWin32Error();
}
using (safeTokenHandle)
{
using (WindowsImpersonationContext impersonatedUser = WindowsIdentity.Impersonate(safeTokenHandle.DangerousGetHandle()))
{
string x = WindowsIdentity.GetCurrent().Name;
PrincipalContext pc = new PrincipalContext(ContextType.Domain);
UserPrincipal up = UserPrincipal.FindByIdentity(pc, username);
up.SetPassword(txtNewChangedPassword.Text);
}
SetPassword requires the user your code is running as to be an admin in Active Directory. Since you already have the old password available, try replacing this line:
up.SetPassword(txtNewChangedPassword.Text);
With this:
up.ChangePassword(password, txtNewChangedPassword.Text);
up.Save();
What is it with impersonation this week? The PrincipalContext object has a constructor that accepts user credentials. All you need to do is:
PrincipalContext pc = new PrincipalContext(ContextType.Domain, domain, username, password);
UserPrincipal up = UserPrincipal.FindByIdentity(pc, username);
up.SetPassword(txtNewChangedPassword.Text);
using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, domain, username, password))
{
//PrincipalContext pc = new PrincipalContext(ContextType.Domain, domain, username, password);
UserPrincipal up = new UserPrincipal(pc);
up.SetPassword(newPassword);
}
Related
I am connecting to AD and checking the username exists and validating the credentials in my local machine and it is working fine.
bool userAuthenticated = false;
var domainName = DomainName;
if (useSSL)
{
domainName = domainName + ":636";
ContextOptions options = ContextOptions.SimpleBind | ContextOptions.SecureSocketLayer;
using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, domainName, null, options, domainuser, domainpassword))
{
userAuthenticated = pc.ValidateCredentials(username, password, options);
}
}
else
{
using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, domainName))
{
userAuthenticated = pc.ValidateCredentials(username, password);
}
}
return userAuthenticated;
But when the code is deployed in the server it is throwing an error
Invalid username / password
But our team is providing only GMSA account and it is not having the password.
How do I authenticate the credentials and check the username in AD exists or not?
I was try to connect my TFS server using my credentials . But i am getting error 'Basic authentication requires a secure connection to the server.'
string username = "adminuser";
string pwd = "mypassword";
string domain = "http://localhost:8080/tfs/defaultcollection";
NetworkCredential networkCredential = new NetworkCredential(username, pwd);
BasicAuthCredential basicAuthCredential = new BasicAuthCredential(networkCredential);
TfsClientCredentials tfsClientCredentials = new TfsClientCredentials(basicAuthCredential)
{
AllowInteractive = false
};
TfsTeamProjectCollection tfs = new TfsTeamProjectCollection(new Uri(domain), tfsClientCredentials);
tfs.EnsureAuthenticated();
My tfs didn't have the https. Any alternative to fix it But browser level it is working fine
The BasicAuthCredential requires https://, I believe, and I wasn't able to access my TFS with https://. So I found another way to get from NetworkCredential to VssCredentials.
string username = "adminuser";
string pwd = "mypassword";
string domain = "http://localhost:8080/tfs/defaultcollection";
NetworkCredential networkCredential = new NetworkCredential(username, pwd);
//BasicAuthCredential basicAuthCredential = new BasicAuthCredential(networkCredential);
Microsoft.VisualStudio.Services.Common.WindowsCredential winCred = new Microsoft.VisualStudio.Services.Common.WindowsCredential(networkCredential);
VssCredentials vssCred = new VssClientCredentials(winCred);
TfsTeamProjectCollection tfs = new TfsTeamProjectCollection(new Uri(domain), vssCred);
tfs.EnsureAuthenticated();
Try using the following code:
String collectionUri = "http://localhost:8080/tfs/defaultcollection";
VssCredentials creds = new VssClientCredentials();
creds.Storage = new VssClientCredentialStorage();
VssConnection connection = new VssConnection(new Uri(collectionUri), creds);
I am struggling with the following, this is what I have now and it is working but.
public PrincipalContext getPrincipalContext(bool secured)
{
PrincipalContext oPrincipalContext = new PrincipalContext(ContextType.Domain,
secured ? DomainName + ":636" : DomainName,
Container,
secured ? ContextOptions.SecureSocketLayer | ContextOptions.Negotiate : ContextOptions.SimpleBind,
userName,
password);
return oPrincipalContext;
}
want to do something like this
secured ? PrincipalContext oPrincipalContext = new PrincipalContext(ContextType.Domain,
DomainName + ":636",
Container,
ContextOptions.SecureSocketLayer | ContextOptions.Negotiate
userName,
password);
:
PrincipalContext oPrincipalContext = new PrincipalContext(ContextType.Domain,
DomainName,
Container,
ContextOptions.SimpleBind);
return oPrincipalContext;
I think this is possible but can not get it to compile. Can someone help me with the right way to do this?
May be this:
PrincipalContext oPrincipalContext = secured ?
new PrincipalContext(ContextType.Domain,
DomainName + ":636",
Container,
ContextOptions.SecureSocketLayer | ContextOptions.Negotiate
userName,
password);
:
new PrincipalContext(ContextType.Domain,
DomainName,
Container,
ContextOptions.SimpleBind );
or why don't you just use if, else
When I use AuthenticationTypes.Anonymous to connect to LDAP server, it`s ok:
var a = new DirectoryEntry("LDAP://localhost:389/dc=maxcrc,dc=com", "", "", AuthenticationTypes.Anonymous);
but when I want to use username and password to connect the server:
var a = new DirectoryEntry("LDAP://localhost:389/dc=maxcrc,dc=com", "cn=Manager,dc=maxcrc,dc=com", "111111");
it causes a "Specifying an invalid dn syntax" error:
If I use this:
var a = new DirectoryEntry("LDAP://localhost:389/dc=moe,dc=com", "cn=Manager,dc=moe,dc=com", "111111", AuthenticationTypes.Encryption);
it causes an "The server is not operational" error:
So how can I connect to my LDAP server with username and password?
here's some of my piece of code when connecting to LDAP and authenticating the user used.
private DirectoryEntry dEntry = null;
private DirectorySearcher dSearch = null;
//Validate User Credentials in Active Directory
dEntry = new DirectoryEntry(ADPath, userName, password, AuthenticationTypes.Secure);
dSearch = new DirectorySearcher(dEntry);
dSearch.PageSize = 1000;
dSearch.PropertiesToLoad.Add("cn");
if (dSearch.FindOne() != null)
{
//success
}
for validate username and password use this code
using(PrincipalContext pc = new PrincipalContext(ContextType.Domain, "YOURDOMAIN"))
{
// validate the credentials
bool isValid = pc.ValidateCredentials("myuser", "mypassword");
}
and for connect with username and password try this
DirectoryEntry directoryEntry = new DirectoryEntry("LDAP://example.com", "username", "password");
Thank you everyone!I slove it by using the AuthenticationTypes.None
My situation is my ldap server is openssh on windows
i am creating an email helper that sends out emails, this is working fine and all but i need to pass through the current users username and password.
Is there any way to accomplish this?
I have used Environment.UserName; and this gets the username correctly but i do not know how to get the password.
Here is what i am doing for the email helper.
public void SendEmail(int port, string host, string displayName, string subject, string body, string addressFrom, string addressTo, string password, string username)
{
MailMessage messageToSend = new MailMessage();
messageToSend .Subject = subject;
messageToSend .Body = body;
messageToSend .From = new MailAddress(addressFrom, displayName);
messageToSend .To.Add(addressTo);
messageToSend .Priority = MailPriority.High;
messageToSend .IsBodyHtml = true;
SmtpClient SMTPclient = new SmtpClient(Host, Port);
SMTPclient .EnableSsl = false;
SMTPclient.Credentials = new NetworkCredential(Username, Password);
SMTPclient.Send(message);
}
There is no way you can get the password, but you actually don't need the password, you need the credentials for current user, which you can get and assigned to your SMTPclient as follows
SMTPclient.Credentials = CredentialCache.DefaultNetworkCredentials;
There is no way you can retrieve currently logged user password!!
Windows stores an hash of the password, not password itself.