text: /*
     Unix SMB/Netbios implementation.
     Version 3.0
     handle NLTMSSP, server side
  
     Copyright (C) Andrew Tridgell      2001
     Copyright (C) Andrew Bartlett 2001-2003
     Copyright (C) Andrew Bartlett 2005 (Updated from gensec).
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
  
  #include "includes.h"
  #include "../libcli/auth/ntlmssp.h"
  #include "../libcli/auth/ntlmssp_private.h"
  
  /**
   * Print out the NTLMSSP flags for debugging
   * @param neg_flags The flags from the packet
   */
  void debug_ntlmssp_flags(uint32_t neg_flags)
  {
  	DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
  
  	if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_UNICODE\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_OEM\n"));
  	if (neg_flags & NTLMSSP_REQUEST_TARGET)
  		DEBUGADD(4, ("  NTLMSSP_REQUEST_TARGET\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SIGN\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SEAL\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_DATAGRAM)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_DATAGRAM\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_LM_KEY\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NETWARE\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
  	if (neg_flags & NTLMSSP_REQUEST_NON_NT_SESSION_KEY)
  		DEBUGADD(4, ("  NTLMSSP_REQUEST_NON_NT_SESSION_KEY\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM2\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_TARGET_INFO)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_TARGET_INFO\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_VERSION)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_VERSION\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_128)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_128\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
  	if (neg_flags & NTLMSSP_NEGOTIATE_56)
  		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_56\n"));
  }
  
  void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
  			      uint32_t neg_flags, bool allow_lm)
  {
  	if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
  		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
  		ntlmssp_state->unicode = true;
  	} else {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
  		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
  		ntlmssp_state->unicode = false;
  	}
  
  	if ((neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) && allow_lm) {
  		/* other end forcing us to use LM */
  		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
  		ntlmssp_state->use_ntlmv2 = false;
  	} else {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_NTLM2)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_128)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_128;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_56)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_56;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SIGN;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SEAL;
  	}
  
  	if (!(neg_flags & NTLMSSP_NEGOTIATE_VERSION)) {
  		ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_VERSION;
  	}
  
  	if ((neg_flags & NTLMSSP_REQUEST_TARGET)) {
  		ntlmssp_state->neg_flags |= NTLMSSP_REQUEST_TARGET;
  	}
  }
  