Initial import

[samba] / source / auth / auth_compat.c

diff --git a/source/auth/auth_compat.c b/source/auth/auth_compat.c
new file mode 100644 (file)
index 0000000..2ac70d7
--- /dev/null
+++ b/source/auth/auth_compat.c
@@ -0,0 +1,123 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Bartlett         2001-2002
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+extern struct auth_context *negprot_global_auth_context;
+extern BOOL global_encrypted_passwords_negotiated;
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/****************************************************************************
+ COMPATIBILITY INTERFACES:
+ ***************************************************************************/
+
+/****************************************************************************
+check if a username/password is OK assuming the password is a 24 byte
+SMB hash
+return True if the password is correct, False otherwise
+****************************************************************************/
+
+NTSTATUS check_plaintext_password(const char *smb_name, DATA_BLOB plaintext_password, auth_serversupplied_info **server_info)
+{
+       struct auth_context *plaintext_auth_context = NULL;
+       auth_usersupplied_info *user_info = NULL;
+       const uint8 *chal;
+       NTSTATUS nt_status;
+       if (!NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&plaintext_auth_context))) {
+               return nt_status;
+       }
+       
+       chal = plaintext_auth_context->get_ntlm_challenge(plaintext_auth_context);
+       
+       if (!make_user_info_for_reply(&user_info, 
+                                     smb_name, lp_workgroup(), chal,
+                                     plaintext_password)) {
+               return NT_STATUS_NO_MEMORY;
+       }
+       
+       nt_status = plaintext_auth_context->check_ntlm_password(plaintext_auth_context, 
+                                                               user_info, server_info); 
+       
+       (plaintext_auth_context->free)(&plaintext_auth_context);
+       free_user_info(&user_info);
+       return nt_status;
+}
+
+static NTSTATUS pass_check_smb(const char *smb_name,
+                              const char *domain, 
+                              DATA_BLOB lm_pwd,
+                              DATA_BLOB nt_pwd,
+                              DATA_BLOB plaintext_password,
+                              BOOL encrypted)
+
+{
+       NTSTATUS nt_status;
+       auth_serversupplied_info *server_info = NULL;
+       if (encrypted) {                
+               auth_usersupplied_info *user_info = NULL;
+               make_user_info_for_reply_enc(&user_info, smb_name, 
+                                            domain,
+                                            lm_pwd, 
+                                            nt_pwd);
+               nt_status = negprot_global_auth_context->check_ntlm_password(negprot_global_auth_context, 
+                                                                            user_info, &server_info);
+               free_user_info(&user_info);
+       } else {
+               nt_status = check_plaintext_password(smb_name, plaintext_password, &server_info);
+       }               
+       free_server_info(&server_info);
+       return nt_status;
+}
+
+/****************************************************************************
+check if a username/password pair is ok via the auth subsystem.
+return True if the password is correct, False otherwise
+****************************************************************************/
+BOOL password_ok(char *smb_name, DATA_BLOB password_blob)
+{
+
+       DATA_BLOB null_password = data_blob(NULL, 0);
+       BOOL encrypted = (global_encrypted_passwords_negotiated && password_blob.length == 24);
+       
+       if (encrypted) {
+               /* 
+                * The password could be either NTLM or plain LM.  Try NTLM first, 
+                * but fall-through as required.
+                * NTLMv2 makes no sense here.
+                */
+               if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, password_blob, null_password, encrypted))) {
+                       return True;
+               }
+               
+               if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), password_blob, null_password, null_password, encrypted))) {
+                       return True;
+               }
+       } else {
+               if (NT_STATUS_IS_OK(pass_check_smb(smb_name, lp_workgroup(), null_password, null_password, password_blob, encrypted))) {
+                       return True;
+               }
+       }
+
+       return False;
+}
+
+