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/*
* Unix SMB/CIFS implementation.
* Routines to change trust account passwords.
* Copyright (C) Andrew Bartlett 2001.
*
* 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 pstring global_myname;
/*********************************************************
Change the domain password on the PDC.
Just changes the password betwen the two values specified.
Caller must have the cli connected to the netlogon pipe
already.
**********************************************************/
static NTSTATUS just_change_the_password(struct cli_state *cli, TALLOC_CTX *mem_ctx,
unsigned char orig_trust_passwd_hash[16],
unsigned char new_trust_passwd_hash[16])
{
NTSTATUS result;
result = new_cli_nt_setup_creds(cli, (lp_server_role() == ROLE_DOMAIN_MEMBER) ?
SEC_CHAN_WKSTA : SEC_CHAN_BDC, orig_trust_passwd_hash);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0,("just_change_the_password: unable to setup creds (%s)!\n",
get_nt_error_msg(result)));
return result;
}
result = cli_net_srv_pwset(cli, mem_ctx, global_myname, new_trust_passwd_hash);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0,("just_change_the_password: unable to change password (%s)!\n",
get_nt_error_msg(result)));
}
return result;
}
/*********************************************************
Change the domain password on the PDC.
Store the password ourselves, but use the supplied password
Caller must have already setup the connection to the NETLOGON pipe
**********************************************************/
NTSTATUS trust_pw_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx,
unsigned char orig_trust_passwd_hash[16])
{
unsigned char new_trust_passwd_hash[16];
char *new_trust_passwd;
char *str;
NTSTATUS nt_status;
/* Create a random machine account password */
str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
new_trust_passwd = talloc_strdup(mem_ctx, str);
E_md4hash((uchar *)new_trust_passwd, new_trust_passwd_hash);
nt_status = just_change_the_password(cli, mem_ctx, orig_trust_passwd_hash,
new_trust_passwd_hash);
if (NT_STATUS_IS_OK(nt_status)) {
DEBUG(3,("%s : change_trust_account_password: Changed password.\n", timestring(False)));
/*
* Return the result of trying to write the new password
* back into the trust account file.
*/
if (!secrets_store_machine_password(new_trust_passwd)) {
nt_status = NT_STATUS_UNSUCCESSFUL;
}
}
return nt_status;
}
/*********************************************************
Change the domain password on the PDC.
Do most of the legwork ourselfs. Caller must have
already setup the connection to the NETLOGON pipe
**********************************************************/
NTSTATUS trust_pw_find_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx, char *domain)
{
unsigned char old_trust_passwd_hash[16];
char *up_domain;
up_domain = talloc_strdup(mem_ctx, domain);
if (!secrets_fetch_trust_account_password(domain,
old_trust_passwd_hash,
NULL)) {
DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
return NT_STATUS_UNSUCCESSFUL;
}
return trust_pw_change_and_store_it(cli, mem_ctx, old_trust_passwd_hash);
}
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