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/*
Unix SMB/Netbios implementation.
Version 1.9.
Password cacheing. obfuscation is planned
Copyright (C) Luke Kenneth Casson Leighton 1996-1998
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"
/****************************************************************************
initialises a password structure
****************************************************************************/
void pwd_init(struct pwd_info *pwd)
{
memset((char *)pwd->password , '\0', sizeof(pwd->password ));
memset((char *)pwd->smb_lm_pwd, '\0', sizeof(pwd->smb_lm_pwd));
memset((char *)pwd->smb_nt_pwd, '\0', sizeof(pwd->smb_nt_pwd));
memset((char *)pwd->smb_lm_owf, '\0', sizeof(pwd->smb_lm_owf));
memset((char *)pwd->smb_nt_owf, '\0', sizeof(pwd->smb_nt_owf));
pwd->null_pwd = True; /* safest option... */
pwd->cleartext = False;
pwd->crypted = False;
}
/****************************************************************************
returns NULL password flag
****************************************************************************/
BOOL pwd_is_nullpwd(const struct pwd_info *pwd)
{
return pwd->null_pwd;
}
/****************************************************************************
compares two passwords. hmm, not as trivial as expected. hmm.
****************************************************************************/
BOOL pwd_compare(const struct pwd_info *pwd1, const struct pwd_info *pwd2)
{
if (pwd1->cleartext && pwd2->cleartext) {
if (strequal(pwd1->password, pwd2->password))
return True;
}
if (pwd1->null_pwd && pwd2->null_pwd)
return True;
if (!pwd1->null_pwd && !pwd2->null_pwd &&
!pwd1->cleartext && !pwd2->cleartext) {
#ifdef DEBUG_PASSWORD
DEBUG(100,("pwd compare: nt#\n"));
dump_data(100, pwd1->smb_nt_pwd, 16);
dump_data(100, pwd2->smb_nt_pwd, 16);
#endif
if (memcmp(pwd1->smb_nt_pwd, pwd2->smb_nt_pwd, 16) == 0)
return True;
#ifdef DEBUG_PASSWORD
DEBUG(100,("pwd compare: lm#\n"));
dump_data(100, pwd1->smb_lm_pwd, 16);
dump_data(100, pwd2->smb_lm_pwd, 16);
#endif
if (memcmp(pwd1->smb_lm_pwd, pwd2->smb_lm_pwd, 16) == 0)
return True;
}
return False;
}
/****************************************************************************
reads a password
****************************************************************************/
void pwd_read(struct pwd_info *pwd, char *passwd_report, BOOL do_encrypt)
{
/* grab a password */
char *user_pass;
pwd_init(pwd);
user_pass = (char*)getpass(passwd_report);
/*
* Do not assume that an empty string is a NULL password.
* If you do this will break the session key generation for
* and account with an emtpy password. If you wish to use
* a NULL password, use the -N option to smbclient and rpcclient
* --jerry
*/
#if 0
if (user_pass == NULL || user_pass[0] == 0)
{
pwd_set_nullpwd(pwd);
}
else if (do_encrypt)
#endif
if (do_encrypt)
{
pwd_make_lm_nt_16(pwd, user_pass);
}
else
{
pwd_set_cleartext(pwd, user_pass);
}
}
/****************************************************************************
stores a cleartext password
****************************************************************************/
void pwd_set_nullpwd(struct pwd_info *pwd)
{
pwd_init(pwd);
pwd->cleartext = False;
pwd->null_pwd = True;
pwd->crypted = False;
}
/****************************************************************************
stores a cleartext password
****************************************************************************/
void pwd_set_cleartext(struct pwd_info *pwd, char *clr)
{
pwd_init(pwd);
push_ascii_fstring(pwd->password, clr);
pwd->cleartext = True;
pwd->null_pwd = False;
pwd->crypted = False;
}
/****************************************************************************
gets a cleartext password
****************************************************************************/
void pwd_get_cleartext(struct pwd_info *pwd, char *clr)
{
if (pwd->cleartext) {
fstrcpy(clr, pwd->password);
} else {
clr[0] = 0;
}
}
/****************************************************************************
stores lm and nt hashed passwords
****************************************************************************/
void pwd_set_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
{
pwd_init(pwd);
if (lm_pwd)
{
memcpy(pwd->smb_lm_pwd, lm_pwd, 16);
}
else
{
memset((char *)pwd->smb_lm_pwd, '\0', 16);
}
if (nt_pwd)
{
memcpy(pwd->smb_nt_pwd, nt_pwd, 16);
}
else
{
memset((char *)pwd->smb_nt_pwd, '\0', 16);
}
pwd->null_pwd = False;
pwd->cleartext = False;
pwd->crypted = False;
}
/****************************************************************************
gets lm and nt hashed passwords
****************************************************************************/
void pwd_get_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
{
if (lm_pwd != NULL)
{
memcpy(lm_pwd, pwd->smb_lm_pwd, 16);
}
if (nt_pwd != NULL)
{
memcpy(nt_pwd, pwd->smb_nt_pwd, 16);
}
}
/****************************************************************************
makes lm and nt hashed passwords
****************************************************************************/
void pwd_make_lm_nt_16(struct pwd_info *pwd, char *clr)
{
pstring dos_passwd;
pwd_init(pwd);
push_ascii_pstring(dos_passwd, clr);
nt_lm_owf_gen(dos_passwd, pwd->smb_nt_pwd, pwd->smb_lm_pwd);
pwd->null_pwd = False;
pwd->cleartext = False;
pwd->crypted = False;
}
/****************************************************************************
makes lm and nt OWF crypts
****************************************************************************/
void pwd_make_lm_nt_owf(struct pwd_info *pwd, uchar cryptkey[8])
{
#ifdef DEBUG_PASSWORD
DEBUG(100,("client cryptkey: "));
dump_data(100, (char *)cryptkey, 8);
#endif
SMBOWFencrypt(pwd->smb_nt_pwd, cryptkey, pwd->smb_nt_owf);
#ifdef DEBUG_PASSWORD
DEBUG(100,("nt_owf_passwd: "));
dump_data(100, (char *)pwd->smb_nt_owf, sizeof(pwd->smb_nt_owf));
DEBUG(100,("nt_sess_pwd: "));
dump_data(100, (char *)pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
#endif
SMBOWFencrypt(pwd->smb_lm_pwd, cryptkey, pwd->smb_lm_owf);
#ifdef DEBUG_PASSWORD
DEBUG(100,("lm_owf_passwd: "));
dump_data(100, (char *)pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
DEBUG(100,("lm_sess_pwd: "));
dump_data(100, (char *)pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
#endif
pwd->crypted = True;
}
/****************************************************************************
gets lm and nt crypts
****************************************************************************/
void pwd_get_lm_nt_owf(struct pwd_info *pwd, uchar lm_owf[24], uchar nt_owf[24])
{
if (lm_owf != NULL)
{
memcpy(lm_owf, pwd->smb_lm_owf, 24);
}
if (nt_owf != NULL)
{
memcpy(nt_owf, pwd->smb_nt_owf, 24);
}
}
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