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/*
* Unix SMB/CIFS implementation.
* Routines to operate on various trust relationships
* Copyright (C) Andrew Bartlett 2001
* Copyright (C) Rafal Szczesniak 2003
*
* 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/libcli_auth.h"
#include "rpc_client/cli_netlogon.h"
#include "rpc_client/cli_pipe.h"
#include "../librpc/gen_ndr/ndr_netlogon.h"
#include "secrets.h"
#include "passdb.h"
#include "libsmb/libsmb.h"
/*********************************************************
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 rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
const char *domain,
const char *account_name,
unsigned char orig_trust_passwd_hash[16],
enum netr_SchannelType sec_channel_type)
{
unsigned char new_trust_passwd_hash[16];
char *new_trust_passwd;
NTSTATUS nt_status;
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
case SEC_CHAN_DOMAIN:
break;
default:
return NT_STATUS_NOT_SUPPORTED;
}
/* Create a random machine account password */
new_trust_passwd = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
if (new_trust_passwd == NULL) {
DEBUG(0, ("talloc_strdup failed\n"));
return NT_STATUS_NO_MEMORY;
}
E_md4hash(new_trust_passwd, new_trust_passwd_hash);
nt_status = rpccli_netlogon_set_trust_password(cli, mem_ctx,
account_name,
orig_trust_passwd_hash,
new_trust_passwd,
new_trust_passwd_hash,
sec_channel_type);
if (NT_STATUS_IS_OK(nt_status)) {
DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
current_timestring(talloc_tos(), False)));
/*
* Return the result of trying to write the new password
* back into the trust account file.
*/
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
nt_status = NT_STATUS_UNSUCCESSFUL;
}
break;
case SEC_CHAN_DOMAIN: {
char *pwd;
struct dom_sid sid;
time_t pass_last_set_time;
/* we need to get the sid first for the
* pdb_set_trusteddom_pw call */
if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &pass_last_set_time)) {
nt_status = NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
if (!pdb_set_trusteddom_pw(domain, new_trust_passwd, &sid)) {
nt_status = NT_STATUS_INTERNAL_DB_CORRUPTION;
}
break;
}
default:
break;
}
}
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 rpc_pipe_client *cli,
TALLOC_CTX *mem_ctx,
const char *domain)
{
unsigned char old_trust_passwd_hash[16];
enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
const char *account_name;
if (!get_trust_pw_hash(domain, old_trust_passwd_hash, &account_name,
&sec_channel_type)) {
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, domain,
account_name,
old_trust_passwd_hash,
sec_channel_type);
}
NTSTATUS change_trust_account_password( const char *domain, const char *remote_machine)
{
NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
struct sockaddr_storage pdc_ss;
fstring dc_name;
struct cli_state *cli = NULL;
struct rpc_pipe_client *netlogon_pipe = NULL;
DEBUG(5,("change_trust_account_password: Attempting to change trust account password in domain %s....\n",
domain));
if (remote_machine == NULL || !strcmp(remote_machine, "*")) {
/* Use the PDC *only* for this */
if ( !get_pdc_ip(domain, &pdc_ss) ) {
DEBUG(0,("Can't get IP for PDC for domain %s\n", domain));
goto failed;
}
if ( !name_status_find( domain, 0x1b, 0x20, &pdc_ss, dc_name) )
goto failed;
} else {
/* supoport old deprecated "smbpasswd -j DOMAIN -r MACHINE" behavior */
fstrcpy( dc_name, remote_machine );
}
/* if this next call fails, then give up. We can't do
password changes on BDC's --jerry */
if (!NT_STATUS_IS_OK(cli_full_connection(&cli, lp_netbios_name(), dc_name,
NULL, 0,
"IPC$", "IPC",
"", "",
"", 0, SMB_SIGNING_DEFAULT))) {
DEBUG(0,("modify_trust_password: Connection to %s failed!\n", dc_name));
nt_status = NT_STATUS_UNSUCCESSFUL;
goto failed;
}
/*
* Ok - we have an anonymous connection to the IPC$ share.
* Now start the NT Domain stuff :-).
*/
/* Shouldn't we open this with schannel ? JRA. */
nt_status = cli_rpc_pipe_open_noauth(
cli, &ndr_table_netlogon.syntax_id, &netlogon_pipe);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("modify_trust_password: unable to open the domain client session to machine %s. Error was : %s.\n",
dc_name, nt_errstr(nt_status)));
cli_shutdown(cli);
cli = NULL;
goto failed;
}
nt_status = trust_pw_find_change_and_store_it(
netlogon_pipe, netlogon_pipe, domain);
cli_shutdown(cli);
cli = NULL;
failed:
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("%s : change_trust_account_password: Failed to change password for domain %s.\n",
current_timestring(talloc_tos(), False), domain));
}
else
DEBUG(5,("change_trust_account_password: sucess!\n"));
return nt_status;
}
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