public static void RemovePrincipal(SecurityIdentifier userSid, RemovalReason reason)
{
// TODO: Only do this if the principal is a member of the group?
if ((LocalAdminGroup != null) && (userSid != null))
{
SecurityIdentifier[] localAdminSids = GetLocalGroupMembers(null, LocalAdminGroup.SamAccountName);
foreach (SecurityIdentifier sid in localAdminSids)
{
if (sid == userSid)
/* if (string.Compare(sid.Value, principalSID, true) == 0) */
{
string accountName = GetAccountNameFromSID(userSid.Value);
int result = RemoveLocalGroupMembers(null, LocalAdminGroup.SamAccountName, userSid);
if (result == 0)
{
PrincipalList.RemoveSID(userSid);
Settings.SIDs = PrincipalList.GetSIDs().Select(p => p.Value).ToArray <string>();
string reasonString = Properties.Resources.RemovalReasonUnknown;
switch (reason)
{
case RemovalReason.ServiceStopped:
reasonString = Properties.Resources.RemovalReasonServiceStopped;
break;
case RemovalReason.Timeout:
reasonString = Properties.Resources.RemovalReasonTimeout;
break;
case RemovalReason.UserLogoff:
reasonString = Properties.Resources.RemovalReasonUserLogoff;
break;
case RemovalReason.UserRequest:
reasonString = Properties.Resources.RemovalReasonUserRequest;
break;
}
// TODO: i18n.
string message = string.Format("Principal {0} ({1}) removed from the Administrators group. Reason: {2}.", userSid, accountName, reasonString);
ApplicationLog.WriteInformationEvent(message, EventID.UserRemovedFromAdminsSuccess);
}
else
{
// TODO: i18n.
ApplicationLog.WriteWarningEvent(string.Format("Removing principal {0} ({1}) from the Administrators group returned error code {1}.", userSid, accountName, result), EventID.UserRemovedFromAdminsFailure);
}
}
}
}
}
static PrincipalList()
{
principals = new System.Collections.Generic.Dictionary <string, DateTime>();
// Retrieve the stored SID list from the settings.
string[] storedSIDs = Settings.SIDs;
if (storedSIDs != null)
{
for (int i = 0; i < storedSIDs.Length; i++)
{
PrincipalList.AddSID(storedSIDs[i], DateTime.Now.AddMinutes(Settings.AdminRightsTimeout * -1));
}
}
Settings.SIDs = null;
}
public static void AddPrincipal(WindowsIdentity userIdentity, DateTime?expirationTime, string remoteAddress)
{
// TODO: Only do this if the principal is not a member of the group?
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent(string.Format("User is a member of {0:N0} groups.", userIdentity.Groups.Count), EventID.DebugMessage);
#endif
*
#if DEBUG
* ApplicationLog.WriteInformationEvent("Checking local allowed/denied list.", EventID.DebugMessage);
#endif
*/
bool userIsAuthorized = Shared.UserIsAuthorized(userIdentity, Settings.LocalAllowedEntities, Settings.LocalDeniedEntities);
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("User is authorized: {0}", userIsAuthorized), EventID.DebugMessage);
#endif
if (!string.IsNullOrEmpty(remoteAddress))
{ // Request is from a remote computer. Check the remote authorization list.
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent("Checking remote allowed/denied list.", EventID.DebugMessage);
#endif
*/
userIsAuthorized &= Shared.UserIsAuthorized(userIdentity, Settings.RemoteAllowedEntities, Settings.RemoteDeniedEntities);
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent(string.Format("User is authorized: {0}", userIsAuthorized), EventID.DebugMessage);
#endif
*/
}
if (
(LocalAdminGroup != null) &&
(userIdentity.User != null) &&
(userIdentity.Groups != null) &&
(userIsAuthorized)
)
{
PrincipalList.AddSID(userIdentity, expirationTime, remoteAddress);
AddPrincipalToAdministrators(userIdentity.User, /* expirationTime, */ remoteAddress);
}
}
public bool PrincipalIsInList()
{
WindowsIdentity userIdentity = null;
if (ServiceSecurityContext.Current != null)
{
userIdentity = ServiceSecurityContext.Current.WindowsIdentity;
}
if (userIdentity != null)
{
return(PrincipalList.ContainsSID(userIdentity.User));
}
else
{
return(false);
}
}
private static void AddPrincipalToAdministrators(SecurityIdentifier userSid, string remoteAddress)
{
int result = AddLocalGroupMembers(null, LocalAdminGroup.SamAccountName, userSid);
if (result == 0)
{
/* PrincipalList.AddSID(userSid, expirationTime, remoteAddress); */
// TODO: i18n.
ApplicationLog.WriteInformationEvent(string.Format("Principal {0} ({1}) added to the Administrators group.", userSid, GetAccountNameFromSID(userSid.Value)), EventID.UserAddedToAdminsSuccess);
if (remoteAddress != null)
{
// TODO: i18n.
ApplicationLog.WriteInformationEvent(string.Format("Request was sent from host {0}.", remoteAddress), EventID.RemoteRequestInformation);
}
Settings.SIDs = PrincipalList.GetSIDs().Select(p => p.Value).ToArray <string>();
}
else
{
// TODO: i18n.
ApplicationLog.WriteWarningEvent(string.Format("Adding principal {0} ({1}) to the Administrators group returned error code {2}.", userSid, GetAccountNameFromSID(userSid.Value), result), EventID.UserAddedToAdminsFailure);
}
}
private void RemovalTimerElapsed(object sender, System.Timers.ElapsedEventArgs e)
{
/*
* string[] expiredSidStrings = PrincipalList.GetExpiredSIDs();
* foreach (string sidString in expiredSidStrings)
* {
* LocalAdministratorGroup.RemovePrincipal(new SecurityIdentifier(sidString), RemovalReason.Timeout);
* }
*/
Principal[] expiredPrincipals = PrincipalList.GetExpiredPrincipals();
foreach (Principal prin in expiredPrincipals)
{
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("Expired Principal: {0}", prin.PrincipalSid.Value), EventID.DebugMessage);
#endif
LocalAdministratorGroup.RemovePrincipal(prin.PrincipalSid, RemovalReason.Timeout);
if ((Settings.EndRemoteSessionsUponExpiration) && (!string.IsNullOrEmpty(prin.RemoteAddress)))
{
string userName = prin.PrincipalName;
while (userName.LastIndexOf("\\") >= 0)
{
userName = userName.Substring(userName.LastIndexOf("\\") + 1);
}
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("Ending session for \"{0}\" on \"{1}.\"", userName, prin.RemoteAddress), EventID.DebugMessage);
#endif
int returnCode = Shared.EndNetworkSession(string.Format(@"\\{0}", prin.RemoteAddress), userName);
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("Ending session returned error code {0}.", returnCode), EventID.DebugMessage);
#endif
}
}
LocalAdministratorGroup.ValidateAllAddedPrincipals();
}
protected override void OnStop()
{
if (this.namedPipeServiceHost.State == CommunicationState.Opened)
{
this.namedPipeServiceHost.Close();
}
if ((this.tcpServiceHost != null) && (this.tcpServiceHost.State == CommunicationState.Opened))
{
this.tcpServiceHost.Close();
}
this.removalTimer.Stop();
SecurityIdentifier[] sids = PrincipalList.GetSIDs();
for (int i = 0; i < sids.Length; i++)
{
LocalAdministratorGroup.RemovePrincipal(sids[i], RemovalReason.ServiceStopped);
}
base.OnStop();
}
public static void ValidateAllAddedPrincipals()
{
SecurityIdentifier[] localAdminSids = null;
/* string[] addedSids = PrincipalList.GetSIDs(); */
SecurityIdentifier[] addedSids = PrincipalList.GetSIDs();
if ((addedSids.Length > 0) && (LocalAdminGroup != null))
{
localAdminSids = GetLocalGroupMembers(null, LocalAdminGroup.SamAccountName);
}
for (int i = 0; i < addedSids.Length; i++)
{
bool sidFoundInAdminsGroup = false;
if ((addedSids[i] != null) && (localAdminSids != null))
{
foreach (SecurityIdentifier sid in localAdminSids)
{
if (sid == addedSids[i])
{
sidFoundInAdminsGroup = true;
break;
}
}
if (sidFoundInAdminsGroup)
{ // Principal's SID was found in the local administrators group.
if (PrincipalList.GetExpirationTime(addedSids[i]).HasValue)
{ // The principal's rights expire at some point.
if (PrincipalList.GetExpirationTime(addedSids[i]).Value > DateTime.Now)
{ // The principal's administrator rights expire in the future.
// Nothing to do here, since the principal is already in the administrators group.
}
else
{ // The principal's administrator rights have expired.
#if DEBUG
string accountName = GetAccountNameFromSID(addedSids[i]);
ApplicationLog.WriteInformationEvent(string.Format("Principal {0} ({1}) has been removed from the Administrators group by an outside process. Removing the principal from Make Me Admin's list.", addedSids[i], string.IsNullOrEmpty(accountName) ? "unknown account" : accountName), EventID.DebugMessage);
#endif
LocalAdministratorGroup.RemovePrincipal(addedSids[i], RemovalReason.Timeout);
}
}
// TODO: This should be put back in, but it needs to account for the fact that
// some principals may be added without expiration times.
/*
* else
* { // The principal's rights never expire. This should never happen.
* // Remove the principal from the administrator group.
#if DEBUG
* string accountName = GetAccountNameFromSID(addedSids[i]);
* ApplicationLog.WriteInformationEvent(string.Format("Principal {0} ({1}) has been removed from the Administrators group by an outside process. Removing the principal from Make Me Admin's list.", addedSids[i], string.IsNullOrEmpty(accountName) ? "unknown account" : accountName), EventID.DebugMessage);
#endif
* LocalAdministratorGroup.RemovePrincipal(addedSids[i], RemovalReason.Timeout);
*
* if (
* (Settings.AutomaticAddAllowed != null) &&
* (Settings.AutomaticAddAllowed.Length > 0) &&
* (Shared.UserIsAuthorized(userIdentity, Settings.AutomaticAddAllowed, Settings.AutomaticAddDenied))
* )
* {
#if DEBUG
* ApplicationLog.WriteInformationEvent("User is allowed to be automatically added!", EventID.DebugMessage);
#endif
* LocalAdministratorGroup.AddPrincipal(userIdentity, null, null);
* }
* }
*/
}
else
{ // Principal's SID was not found in the local administrators group.
if (PrincipalList.GetExpirationTime(addedSids[i]).HasValue)
{ // The principal's rights expire at some point.
if (PrincipalList.GetExpirationTime(addedSids[i]).Value > DateTime.Now)
{ // The principal's administrator rights expire in the future.
string accountName = GetAccountNameFromSID(addedSids[i]);
if (Settings.OverrideRemovalByOutsideProcess)
{
// TODO: i18n.
ApplicationLog.WriteInformationEvent(string.Format("Principal {0} ({1}) has been removed from the Administrators group by an outside process. Adding the principal back to the Administrators group.", addedSids[i], string.IsNullOrEmpty(accountName) ? "unknown account" : accountName), EventID.PrincipalRemovedByExternalProcess);
AddPrincipalToAdministrators(addedSids[i], null);
}
else
{
// TODO: i18n.
ApplicationLog.WriteInformationEvent(string.Format("Principal {0} ({1}) has been removed from the Administrators group by an outside process. Removing the principal from Make Me Admin's list.", addedSids[i], string.IsNullOrEmpty(accountName) ? "unknown account" : accountName), EventID.PrincipalRemovedByExternalProcess);
PrincipalList.RemoveSID(addedSids[i]);
Settings.SIDs = PrincipalList.GetSIDs().Select(p => p.Value).ToArray <string>();
}
}
else
{ // The principal's administrator rights have expired.
// No need to remove from the administrators group, as we already know the SID
// is not present in the group.
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("Removing SID \"{0}\" from the principal list.", addedSids[i]), EventID.DebugMessage);
#endif
PrincipalList.RemoveSID(addedSids[i]);
Settings.SIDs = PrincipalList.GetSIDs().Select(p => p.Value).ToArray <string>();
}
}
/*
* Rights shouldn't need to be removed here, as we already know the SID is not
* a member of the local administrator group.
* else
* { // The principal's rights never expire. This should never happen.
* // Remove the principal from the administrator. group.
* LocalAdministratorGroup.RemovePrincipal(addedSids[i], RemovalReason.Timeout);
* }
*/
}
}
}
}
protected override void OnSessionChange(SessionChangeDescription changeDescription)
{
switch (changeDescription.Reason)
{
// The user has logged off from a session, either locally or remotely.
case SessionChangeReason.SessionLogoff:
#if DEBUG
ApplicationLog.WriteInformationEvent(string.Format("Session {0} has logged off.", changeDescription.SessionId), EventID.DebugMessage);
#endif
//if (Settings.RemoveAdminRightsOnLogout)
//{
System.Collections.Generic.List <SecurityIdentifier> sidsToRemove = new System.Collections.Generic.List <SecurityIdentifier>(PrincipalList.GetSIDs());
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent("SID to remove list has been retrieved.", EventID.DebugMessage);
* for (int i = 0; i < sidsToRemove.Count; i++)
* {
* ApplicationLog.WriteInformationEvent(string.Format("SID to remove: {0}", sidsToRemove[i]), EventID.DebugMessage);
* }
#endif
*/
int[] sessionIds = LsaLogonSessions.LogonSessions.GetLoggedOnUserSessionIds();
foreach (int id in sessionIds)
{
SecurityIdentifier sid = LsaLogonSessions.LogonSessions.GetSidForSessionId(id);
if (sid != null)
{
if (sidsToRemove.Contains(sid))
{
sidsToRemove.Remove(sid);
}
}
}
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent("SID to remove list has been updated.", EventID.DebugMessage);
* for (int i = 0; i < sidsToRemove.Count; i++)
* {
* ApplicationLog.WriteInformationEvent(string.Format("SID to remove: {0}", sidsToRemove[i]), EventID.DebugMessage);
* }
#endif
*/
for (int i = 0; i < sidsToRemove.Count; i++)
{
if (
(!(PrincipalList.ContainsSID(sidsToRemove[i]) && PrincipalList.IsRemote(sidsToRemove[i])))
&&
(Settings.RemoveAdminRightsOnLogout || !PrincipalList.GetExpirationTime(sidsToRemove[i]).HasValue)
)
{
LocalAdministratorGroup.RemovePrincipal(sidsToRemove[i], RemovalReason.UserLogoff);
}
}
/*
* In theory, this code should remove the user associated with the logoff, but it doesn't work.
* SecurityIdentifier sid = LsaLogonSessions.LogonSessions.GetSidForSessionId(changeDescription.SessionId);
* if (!(PrincipalList.ContainsSID(sid) && PrincipalList.IsRemote(sid)))
* {
* LocalAdministratorGroup.RemovePrincipal(sid, RemovalReason.UserLogoff);
* }
*/
//}
/*
* else
* {
#if DEBUG
* ApplicationLog.WriteInformationEvent("Removing admin rights on log off is disabled.", EventID.DebugMessage);
#endif
* }
*/
break;
// The user has logged on to a session, either locally or remotely.
case SessionChangeReason.SessionLogon:
#if DEBUG
// TODO: i18n.
ApplicationLog.WriteInformationEvent(string.Format("Session logon. Session ID: {0}", changeDescription.SessionId), EventID.SessionChangeEvent);
#endif
WindowsIdentity userIdentity = LsaLogonSessions.LogonSessions.GetWindowsIdentityForSessionId(changeDescription.SessionId);
if (userIdentity != null)
{
/*
#if DEBUG
* ApplicationLog.WriteInformationEvent("User identity is not null.", EventID.DebugMessage);
* ApplicationLog.WriteInformationEvent(string.Format("user name: {0}", userIdentity.Name), EventID.DebugMessage);
* ApplicationLog.WriteInformationEvent(string.Format("user SID: {0}", userIdentity.User), EventID.DebugMessage);
#endif
*/
if (
(Settings.AutomaticAddAllowed != null) &&
(Settings.AutomaticAddAllowed.Length > 0) &&
(Shared.UserIsAuthorized(userIdentity, Settings.AutomaticAddAllowed, Settings.AutomaticAddDenied))
)
{
#if DEBUG
ApplicationLog.WriteInformationEvent("User is allowed to be automatically added!", EventID.DebugMessage);
#endif
LocalAdministratorGroup.AddPrincipal(userIdentity, null, null);
}
}
else
{
// TODO: i18n.
ApplicationLog.WriteWarningEvent("User identity is null.", EventID.DebugMessage);
}
break;
/*
* // The user has reconnected or logged on to a remote session.
* case SessionChangeReason.RemoteConnect:
* ApplicationLog.WriteInformationEvent(string.Format("Remote connect. Session ID: {0}", changeDescription.SessionId), EventID.SessionChangeEvent);
* break;
*/
/*
* // The user has disconnected or logged off from a remote session.
* case SessionChangeReason.RemoteDisconnect:
* ApplicationLog.WriteInformationEvent(string.Format("Remote disconnect. Session ID: {0}", changeDescription.SessionId), EventID.SessionChangeEvent);
* break;
*/
/*
* // The user has locked their session.
* case SessionChangeReason.SessionLock:
* ApplicationLog.WriteInformationEvent(string.Format("Session lock. Session ID: {0}", changeDescription.SessionId), EventID.SessionChangeEvent);
* break;
*/
/*
* // The user has unlocked their session.
* case SessionChangeReason.SessionUnlock:
* ApplicationLog.WriteInformationEvent(string.Format("Session unlock. Session ID: {0}", changeDescription.SessionId), EventID.SessionChangeEvent);
* break;
*/
}
base.OnSessionChange(changeDescription);
}
