public static Principal FromDirectoryEntry(DirectoryEntry directoryEntry, ICollection<string> additionalPropertyNames = null)
{
if (directoryEntry == null)
{
throw new ArgumentNullException("directoryEntry");
}
if (directoryEntry.Properties[ActiveDirectoryProperties.AccountName].Value == null)
{
throw new ActiveDirectoryException("Account name property not found in active directory entry.");
}
bool isGroup = directoryEntry.SchemaClassName == ActiveDirectoryProperties.AccountGroup;
var principal = new Principal
{
AccountName = directoryEntry.Properties[ActiveDirectoryProperties.AccountName].Value.ToString(),
NativeGuid = new Guid(directoryEntry.NativeGuid),
DomainPath = directoryEntry.Path,
IsGroup = isGroup,
IsActive = isGroup || IsActiveUser(directoryEntry)
};
principal.DisplayName = GetDisplayName(directoryEntry) ?? principal.AccountName;
principal.AdditionalProperties = GetAdditionalProperties(directoryEntry, additionalPropertyNames);
principal.ChildDomainPaths = GetChildDomainPaths(directoryEntry);
return principal;
}
protected virtual IReadOnlyCollection<IPrincipal> ResolveMembers(Principal parent, bool isRecursive, ICollection<string> additionalPropertyNames)
{
if (!parent.IsGroup)
{
return new IPrincipal[0];
}
var results = new List<IPrincipal>();
foreach (string childDomainPath in parent.ChildDomainPaths)
{
string fullChildDomainPath = domainPath.GetPathWithProtocol() + "/" + childDomainPath;
if (!results.Any(user => user.DomainPath.Equals(fullChildDomainPath)))
{
using (var childDirectoryEntry = new DirectoryEntry(fullChildDomainPath))
{
Principal childPrincipal = Principal.FromDirectoryEntry(childDirectoryEntry, additionalPropertyNames);
results.Add(childPrincipal);
if (isRecursive)
{
IEnumerable<IPrincipal> childPrincipalMembers = ResolveMembers(childPrincipal, true, additionalPropertyNames);
results.AddRange(childPrincipalMembers.Where(p => results.All(r => r.NativeGuid != p.NativeGuid)));
}
}
}
}
return results;
}