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/*
Unix SMB/Netbios implementation.
Version 1.9.
change a password in a local smbpasswd file
Copyright (C) Andrew Tridgell 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"
/*************************************************************
add a new user to the local smbpasswd file
*************************************************************/
static BOOL add_new_user(char *user_name, uid_t uid, BOOL trust_account,
BOOL disable_user, BOOL set_no_password,
uchar *new_p16, uchar *new_nt_p16)
{
struct smb_passwd new_smb_pwent;
pwdb_init_smb(&new_smb_pwent);
/* Create a new smb passwd entry and set it to the given password. */
new_smb_pwent.unix_uid = uid;
new_smb_pwent.nt_name = user_name;
new_smb_pwent.smb_passwd = NULL;
new_smb_pwent.smb_nt_passwd = NULL;
new_smb_pwent.acct_ctrl = (trust_account ? ACB_WSTRUST : ACB_NORMAL);
if(disable_user) {
new_smb_pwent.acct_ctrl |= ACB_DISABLED;
} else if (set_no_password) {
new_smb_pwent.acct_ctrl |= ACB_PWNOTREQ;
} else {
new_smb_pwent.smb_passwd = new_p16;
new_smb_pwent.smb_nt_passwd = new_nt_p16;
}
return add_smbpwd_entry(&new_smb_pwent);
}
/*************************************************************
change a password entry in the local smbpasswd file
*************************************************************/
BOOL local_password_change(char *user_name, BOOL trust_account, BOOL add_user,
BOOL enable_user, BOOL disable_user, BOOL set_no_password,
char *new_passwd,
char *err_str, size_t err_str_len,
char *msg_str, size_t msg_str_len)
{
struct passwd *pwd;
void *vp;
struct smb_passwd *smb_pwent;
uchar new_p16[16];
uchar new_nt_p16[16];
fstring unix_name;
uid_t unix_uid;
*err_str = '\0';
*msg_str = '\0';
pwd = getpwnam(user_name);
/*
* Check for a machine account.
*/
if (pwd == NULL)
{
if (trust_account)
{
slprintf(err_str, err_str_len - 1, "User %s does not \
exist in system password file (usually /etc/passwd). \
Cannot add machine account without a valid system user.\n", user_name);
}
else
{
slprintf(err_str, err_str_len - 1, "User %s does not \
exist in system password file (usually /etc/passwd).\n", user_name);
}
return False;
}
unix_uid = pwd->pw_uid;
fstrcpy(unix_name, pwd->pw_name);
/* Calculate the MD4 hash (NT compatible) of the new password. */
nt_lm_owf_gen(new_passwd, new_nt_p16, new_p16);
/*
* Open the smbpaswd file.
*/
vp = startsmbpwent(True);
if (!vp && errno == ENOENT) {
FILE *fp;
slprintf(msg_str,msg_str_len-1,
"smbpasswd file did not exist - attempting to create it.\n");
fp = sys_fopen(lp_smb_passwd_file(), "w");
if (fp) {
fprintf(fp, "# Samba SMB password file\n");
fclose(fp);
vp = startsmbpwent(True);
}
}
if (!vp) {
slprintf(err_str, err_str_len-1, "Cannot open file %s. Error was %s\n",
lp_smb_passwd_file(), strerror(errno) );
return False;
}
/* Get the smb passwd entry for this user */
smb_pwent = getsmbpwnam(user_name);
if (smb_pwent == NULL) {
if(add_user == False) {
slprintf(err_str, err_str_len-1,
"Failed to find entry for user %s.\n", unix_name);
endsmbpwent(vp);
return False;
}
if (add_new_user(user_name, unix_uid, trust_account, disable_user,
set_no_password, new_p16, new_nt_p16)) {
slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
endsmbpwent(vp);
return True;
} else {
slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
endsmbpwent(vp);
return False;
}
} else {
/* the entry already existed */
add_user = False;
}
/*
* We are root - just write the new password
* and the valid last change time.
*/
if(disable_user) {
smb_pwent->acct_ctrl |= ACB_DISABLED;
} else if (enable_user) {
if(smb_pwent->smb_passwd == NULL) {
smb_pwent->smb_passwd = new_p16;
smb_pwent->smb_nt_passwd = new_nt_p16;
}
smb_pwent->acct_ctrl &= ~ACB_DISABLED;
} else if (set_no_password) {
smb_pwent->acct_ctrl |= ACB_PWNOTREQ;
/* This is needed to preserve ACB_PWNOTREQ in mod_smbfilepwd_entry */
smb_pwent->smb_passwd = NULL;
smb_pwent->smb_nt_passwd = NULL;
} else {
smb_pwent->acct_ctrl &= ~ACB_PWNOTREQ;
smb_pwent->smb_passwd = new_p16;
smb_pwent->smb_nt_passwd = new_nt_p16;
}
if(mod_smbpwd_entry(smb_pwent,True) == False) {
slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n",
unix_name);
endsmbpwent(vp);
return False;
}
endsmbpwent(vp);
return True;
}
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