I need to get user details of a particular Active Directory group. I am using this code:
var result = grpResponse.Entries[0];
if (result.Attributes["member"] != null)
{
for (var i = 0; i < result.Attributes["member"].Count; i++)
{
var filter = result.Attributes["member"][i].ToString();
var query = "(&(objectClass=user)(" + filter + "))"; // Here I need username to use like cn=username
var userRequest = new SearchRequest(distinguishedName, query,
SearchScope.Subtree);
In filter I am getting something like
CN=Name,OU=something,DC=example
How can I take this cn value i.e user name alone?
If you're on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement (S.DS.AM) namespace.
Basically, you can define a domain context and easily find users and/or groups in AD:
// set up domain context - limit to the OU you're interested in
using (PrincipalContext ctx = new PrincipalContext(ContextType.Domain, null, "OU=YourOU,DC=YourCompany,DC=Com"))
{
// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "YourGroupNameHere");
// if found....
if (group != null)
{
// iterate over the group's members
foreach (Principal p in group.GetMembers())
{
Console.WriteLine("{0}: {1}", p.StructuralObjectClass, p.DisplayName);
// do whatever else you need to do to those members
}
}
}
The new S.DS.AM makes it really easy to play around with users and groups in AD!
Read more about it here:
MSDN docs on System.DirectoryServices.AccountManagement
The below is exactly what I needed.
The OuString you use like ours may have has multiple parts - both OU & DC
bstring OUString = "OU=Groups,OU=Accounts,DC=nw,DC=nos,DC=ourcompanyName,DC=com" ;
using (PrincipalContext ctx = new PrincipalContext(ContextType.Domain, null, OUString))
Related
Ive wrote a function to get all Groups with the Members from AD:
public static void getGroupsWithUsers() {
String currentDomain = Domain.GetCurrentDomain().ToString();
using (PrincipalContext context = new PrincipalContext(ContextType.Domain, currentDomain))
{
using (PrincipalSearcher searcher = new PrincipalSearcher(new UserPrincipal(context)))
{
foreach (var result in searcher.FindAll())
{
DirectoryEntry de = result.GetUnderlyingObject() as DirectoryEntry;
var SID = WindowsIdentity.GetCurrent().User.ToString();
// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(context, de.Properties["samAccountName"].Value.ToString());
if (user != null)
{
// get the user's groups
var groups = user.GetAuthorizationGroups();
foreach (GroupPrincipal group in groups)
{
Console.WriteLine("User: " + user + " is in Group: " + group);
}
}
}
}
}
}
The execution time is around 1,5 seconds for a small amount of data.
Are there any improvements I could make to get the method faster?
I ask because if I execute the function for 1 million users or groups that it will take forever.
The bulk of your problem is what you're doing in the loop. You're taking the search result, converting it to a DirectoryEntry, then going back out to the network to find that account that you already just found.
The PrincipalSearcher.FindAll method returns a collection of Principal objects that you can cast to the type you know they are. In this case, you know it will only return users, so you can cast the result to UserPrincipal in your loop.
You're also assigning a SID variable that you're not using (although this is likely not taking any significant time).
A side note: You don't need that currentDomain variable here, since if you create a PrincipalContext with ContextType.Domain and no domain name, it will automatically use the current domain.
So your code can be simplified to this:
using (PrincipalContext context = new PrincipalContext(ContextType.Domain))
using (PrincipalSearcher searcher = new PrincipalSearcher(new UserPrincipal(context)))
{
foreach (UserPrincipal user in searcher.FindAll())
{
// get the user's groups
var groups = user.GetAuthorizationGroups();
foreach (GroupPrincipal group in groups)
{
Console.WriteLine("User: " + user + " is in Group: " + group);
}
}
}
That will likely cut the time quite a bit. But if you really want to find the best performance possible, you need to use DirectorySearcher and DirectoryEntry directly. The PrincipalSearcher/UserPrincipal classes use those in the background anyway, but you lose a lot of control over what is happening in the background, and that's the key to performance. For maximum performance, you need to cut down on:
the number of network requests, and
how much data is being sent back.
I wrote a couple of articles on this subject that can help you with that, if you'd like to go down that route:
Active Directory: Better performance
Finding all of a user’s groups
Try to split operations: first - get info to string builder, second - print it.
Like this
public static void getGroupsWithUsers()
{
String currentDomain = Domain.GetCurrentDomain().ToString();
var stringBuilder = new StringBuilder();
using (PrincipalContext context = new PrincipalContext(ContextType.Domain, currentDomain))
{
using (PrincipalSearcher searcher = new PrincipalSearcher(new UserPrincipal(context)))
{
foreach (var result in searcher.FindAll())
{
DirectoryEntry de = result.GetUnderlyingObject() as DirectoryEntry;
var SID = WindowsIdentity.GetCurrent().User.ToString();
// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(context, de.Properties["samAccountName"].Value.ToString());
if (user != null)
{
// get the user's groups
var groups = user.GetAuthorizationGroups();
foreach (GroupPrincipal group in groups)
{
stringBuilder.AppendLine($"User: {user} is in Group: {group}");
}
}
}
}
}
string result = stringBuilder.Length > 0
? stringBuilder.ToString()
: "No users were found";
Console.WriteLine(result);
}
I would like to find the subdirectories for a given directory. so far my code looks like this..
It does connect, but now I am not sure how to get the groups under the MainGroup
DirectoryEntry _de = new DirectoryEntry("LDAP://xxx.com/DC=xxx,DC=org");
DirectorySearcher ds = new DirectorySearcher(_de);
ds.Filter = "(&(objectClass=group)(CN=MainGroup)";
ds.SearchScope = SearchScope.Subtree;
ds.PageSize = 1000;
ds.SizeLimit = 0;
foreach (SearchResult result in ds.FindAll())
{
}
Thanks for your time!
If you're on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement (S.DS.AM) namespace. Read all about it here:
Managing Directory Security Principals in the .NET Framework 3.5
MSDN docs on System.DirectoryServices.AccountManagement
Basically, you can define a domain context and easily find users and/or groups in AD:
// set up domain context
using (PrincipalContext ctx = new PrincipalContext(ContextType.Domain))
{
// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "MainGroup");
// if found....
if (group != null)
{
// iterate over members
foreach (Principal p in group.GetMembers())
{
Console.WriteLine("{0}: {1}", p.StructuralObjectClass, p.DisplayName);
// do whatever you need to do to those members
// if you need to find the groups that are members of 'MainGroup'
GroupPrincipal group = p as GroupPrincipal;
if(group != null)
{
// now you have a group that is member of 'MainGroup' - do what you need here
}
}
}
}
The new S.DS.AM makes it really easy to play around with users and groups in AD!
I have a user query that can't be done at an OU level. I am trying to only return users where they are a member of a group (I need to filter by the group string value, not the actual group object). Here is what it currently looks like:
using (var entry = new DirectoryEntry("LDAP://foo.net/DC=appName,DC=domainName,DC=com", Username, Password)) {
using (var searcher = new DirectorySearcher()) {
searcher.Filter = "(&(objectClass=user))";
searcher.SearchRoot = entry;
searcher.PropertiesToLoad.Add("memberOf");
foreach (SearchResult sr in searcher.FindAll()) {
var member = GetSearchResultProperty(sr, "memberOf");
}
}
}
This query goes across multiple OU's where there are different user and group containers.
Is there a way I can filter on the memberOf property when I execute my query (without specifying any sort of OU)?
Just add another term to the filter:
searcher.Filter = "(&(objectClass=user)(memberOf=myGroup))";
It looks like what I am trying to do isn't possible at the time of query execution because the memberOf property needs to be a full path to a group. In my case, I don't actually care about the group object, but, rather the group name (each OU will have different groups, but, could have the same group name). I had to take a different approach to solve this which could have performance implications later on. Just in case someone else finds this question looking for an answer, here is how I am solving it as of now:
using (var entry = new DirectoryEntry("LDAP://foo.net/DC=appName,DC=domainName,DC=com", Username, Password)) {
using (var searcher = new DirectorySearcher()) {
searcher.Filter = "(&(objectClass=user))";
searcher.SearchRoot = entry;
searcher.PageSize = 5000;
searcher.PropertiesToLoad.Add(DirectoryConstants.AD_PROPERTY_MEMBER_OF);
searcher.PropertiesToLoad.Add(DirectoryConstants.AD_PROPERTY_DISPLAY_NAME);
foreach (SearchResult sr in searcher.FindAll()) {
//The memberOf property will be a string array if the user is in multiple groups.
string[] memberOf = GetSearchResultProperties(sr, DirectoryConstants.AD_PROPERTY_MEMBER_OF);
//Check if the user is in the group by analyzing the string.
var group = memberOf.FirstOrDefault(m => m.StartsWith(string.Format("CN={0},", groupName)));
if (group != null) {
//The user is in the group!
}
}
}
}
You need to include the full distinguished name of the group in your search filter, as the memberOf property will contain that value.
searcher.Filter = "(&(objectClass=user)(memberOf=CN=myGroup,CN=groups,OU=theOU,DC=appName,DC=domainName,DC=com))";
EDIT :
My apologies, as I misread the question. Without including an OU, the only other way of doing this is taking the opposite approach, and locating the group object first :
searcher.Filter = "(&(objectClass=group)(name=Your Group Name)"
Then iterate through the DirectoryEntry using it's properties :
foreach(object dn in group.Properties["member"] )
{
string DistinguishedName = dn.ToString();
}
If you're retrieving more than 1,000+ users though, you'll need to take a more segmented approach, which is detailed in this article.
I want to get all the Active Directory groups in which a particular user is a member.
I do have the script to get all the immediate AD groups for a user (see codes below).
However, how do I get all the parent groups for each of the immediate AD groups the user belongs to?
e.g. I am directly part of the AD group called IT Team Managers. This group is member of a parent group called IT Team National etc. How do I get this parent group from my code?
Thanks so much in advance!
DirectorySearcher ouSearch = new DirectorySearcher(entry);
ouSearch.Filter = "(&(objectClass=User)(sAMAccountName=" + username + "))";
//ouSearch.PropertiesToLoad.Add("samAccountName");
ouSearch.PropertiesToLoad.Add("memberOf");
ouSearch.SearchScope = SearchScope.Subtree;
SearchResult allOUS = ouSearch.FindOne();
//foreach (string g in allOUS.Properties["memberOf"])
{
equalsIndex = g.IndexOf("=", 1);
commaIndex = g.IndexOf(",", 1);
if (equalsIndex == -1)
{
return null;
}
groupNames.Append(g.Substring((equalsIndex + 1), (commaIndex - equalsIndex) - 1));
groupNames.Append(",");
}
If you're on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement (S.DS.AM) namespace. Read all about it here:
Managing Directory Security Principals in the .NET Framework 3.5
MSDN docs on System.DirectoryServices.AccountManagement
Basically, you can define a domain context and easily find users and/or groups in AD:
// set up domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain);
// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(ctx, "SomeUserName");
if(user != null)
{
// get the "authorization groups" the user is a member of - recursively
var authGroups = user.GetAuthorizationGroups();
// iterate over groups
foreach(Principal p in authGroups)
{
// do something with groups ....
}
}
The new S.DS.AM makes it really easy to play around with users and groups in AD!
if (DomainHelpers.DomainExists(ConnectionString))
{
using(var baseDirectory = new DirectoryEntry(ConnectionString))
{
baseDirectory.Username = Username;
baseDirectory.Password = Password;
using (DirectorySearcher searcher = new DirectorySearcher())
{
searcher.SearchRoot = baseDirectory;
searcher.Filter = "(objectCategory=user)";
searcher.SearchScope = SearchScope.Subtree;
var userResults = searcher.FindAll();
foreach (SearchResult user in userResults)
{
var newUser = new User();
newUser.Name = user.Properties["name"][0].ToString();
newUser.Path = user.Path;
//.Groups is just a List<string>.
newUser.Groups = user.Properties?????
_users.Add(newUser);
}
}
}
}
How do I retrieve a collection of groups the user belongs to?
Thank you! :)
user.Properties["memberOf"]
don't forget to add searcher.PropertiesToLoad.Add("memberOf"); before ...searcher.FindAll()
To populate your property:
//.Groups is just a List<string>.
foreach(object group in user.Properties["memberOf"])
newUser.Groups.Add((string)group);
You should use System.DirectoryServices.AccountManagement. It's much easier. Here is a nice code project article giving you an overview on all the classes in this DLL.
It's really hard to get it right using DirectoryEntry. First of all, getting memberOf attribute doesn't give you primary group. Also, if the user has a domain local group from another domain, it won't show up in memberOf attribute. You can check here for details. Here is how the code looks like if you switch to use System.DirectoryServices.AccountManagement. The following code can find the immediate groups this user assigned to, which includes the primary group.
UserPrincipal user = UserPrincipal.FindByIdentity(new PrincipalContext (ContextType.Domain, "mydomain.com"), IdentityType.SamAccountName, "username");
foreach (GroupPrincipal group in user.GetGroups())
{
Console.Out.WriteLine(group);
}