142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/* cygsuba.c: Minimal subauthentication functionality to support
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logon without password.
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Copyright 2001, 2006 Red Hat, Inc.
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Written by Corinna Vinschen <vinschen@redhat.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <windows.h>
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#include <ntsecapi.h>
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#include <subauth.h>
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NTSTATUS NTAPI
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Msv1_0SubAuthenticationRoutine (NETLOGON_LOGON_INFO_CLASS logon_level,
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VOID *logon_inf,
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ULONG flags,
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USER_ALL_INFORMATION *usr_inf,
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ULONG *which,
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ULONG *usr_flags,
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BOOLEAN *auth,
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LARGE_INTEGER *logoff,
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LARGE_INTEGER *kickoff)
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{
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ULONG valid_account = USER_NORMAL_ACCOUNT;
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if (!(flags & MSV1_0_PASSTHRU))
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valid_account |= USER_TEMP_DUPLICATE_ACCOUNT;
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*which = *usr_flags = 0;
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/* Not a Network logon?
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TODO: How do I manage an interactive logon using a subauthentication
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package??? The logon_level "interactive" is available but I never
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got it working. I assume that's the reason I don't get a legal
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logon session so that I can connect to network drives. */
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if (logon_level != NetlogonNetworkInformation)
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{
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*auth = TRUE;
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return STATUS_INVALID_INFO_CLASS;
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}
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/* Account type ok? */
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if (!(usr_inf->UserAccountControl & valid_account))
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{
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*auth = FALSE;
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return STATUS_NO_SUCH_USER;
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}
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/* Guest logon? */
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if (flags & MSV1_0_GUEST_LOGON)
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*usr_flags = LOGON_GUEST;
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#if defined (SSHD)
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/* The same code could be used to allow the DLL checking for
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SSH RSA/DSA keys. For that purpose, SSH would need it's
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own implementation with the below field used to transport
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the keys which have to be checked. This could be used to
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allow secure logon with RSA/DSA instead of passwords.
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Of course that needs lots of additions to the code... */
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{
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PNETLOGON_NETWORK_INFO nw_inf = (PNETLOGON_NETWORK_INFO) logon_inf;
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/*
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nw_inf->LmChallenge.data <=>
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MSV1_0_LM20_LOGON::ChallengeToClient
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nw_inf->NtChallengeResponse <=>
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MSV1_0_LM20_LOGON::CaseSensitiveChallengeResponse
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nw_inf->LmChallengeResponse <=>
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MSV1_0_LM20_LOGON::CaseInsensitiveChallengeResponse
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*/
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if (authentication_failed)
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{
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*auth = (usr_inf->UserAccountControl & USER_ACCOUNT_DISABLED) ?
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FALSE : TRUE;
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return STATUS_WRONG_PASSWORD;
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}
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}
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#endif
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/* All accounts except for the local admin are checked for being
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locked out or disabled or expired. */
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if (usr_inf->UserId != DOMAIN_USER_RID_ADMIN)
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{
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SYSTEMTIME CurrentTime;
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LARGE_INTEGER LogonTime;
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/* Account locked out? */
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if (usr_inf->UserAccountControl & USER_ACCOUNT_AUTO_LOCKED)
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{
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*auth = (usr_inf->UserAccountControl & USER_ACCOUNT_DISABLED) ?
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FALSE : TRUE;
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return STATUS_ACCOUNT_LOCKED_OUT;
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}
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/* Account disabled? */
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if (usr_inf->UserAccountControl & USER_ACCOUNT_DISABLED)
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{
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*auth = FALSE;
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return STATUS_ACCOUNT_DISABLED;
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}
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/* Account expired? */
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GetSystemTime (&CurrentTime);
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SystemTimeToFileTime(&CurrentTime, (LPFILETIME) &LogonTime);
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if (usr_inf->AccountExpires.QuadPart &&
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LogonTime.QuadPart >= usr_inf->AccountExpires.QuadPart)
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{
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*auth = TRUE;
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return STATUS_ACCOUNT_EXPIRED;
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}
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}
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/* Don't force logout. */
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logoff->HighPart = 0x7FFFFFFF;
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logoff->LowPart = 0xFFFFFFFF;
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kickoff->HighPart = 0x7FFFFFFF;
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kickoff->LowPart = 0xFFFFFFFF;
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*auth = TRUE;
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return STATUS_SUCCESS;
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}
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NTSTATUS NTAPI
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Msv1_0SubAuthenticationFilter (NETLOGON_LOGON_INFO_CLASS logon_level,
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VOID *logon_inf,
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ULONG flags,
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USER_ALL_INFORMATION *usr_inf,
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ULONG *which,
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ULONG *usr_flags,
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BOOLEAN *auth,
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LARGE_INTEGER *logoff,
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LARGE_INTEGER *kickoff)
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{
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return Msv1_0SubAuthenticationRoutine (logon_level, logon_inf, flags,
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usr_inf, which, usr_flags,
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auth, logoff, kickoff);
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}
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