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/*
Unix SMB/CIFS implementation.
Copyright (C) Stefan Metzmacher 2004
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"
/*
* do a password change using DCERPC/SAMR calls
* 1. connect to the SAMR pipe of users domain PDC (maybe a standalone server or workstation)
* 2. try samr_ChangePassword3
*/
static NTSTATUS libnet_ChangePassword_rpc(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
NTSTATUS status;
union libnet_rpc_connect c;
struct samr_ChangePasswordUser3 pw3;
struct samr_Name server, account;
struct samr_CryptPassword nt_pass, lm_pass;
struct samr_Password nt_verifier, lm_verifier;
uint8_t old_nt_hash[16], new_nt_hash[16];
uint8_t old_lm_hash[16], new_lm_hash[16];
/* prepare connect to the SAMR pipe of the */
c.pdc.level = LIBNET_RPC_CONNECT_PDC;
c.pdc.in.domain_name = r->rpc.in.domain_name;
c.pdc.in.dcerpc_iface_name = DCERPC_SAMR_NAME;
c.pdc.in.dcerpc_iface_uuid = DCERPC_SAMR_UUID;
c.pdc.in.dcerpc_iface_version = DCERPC_SAMR_VERSION;
/* do connect to the SAMR pipe of the */
status = libnet_rpc_connect(ctx, mem_ctx, &c);
if (!NT_STATUS_IS_OK(status)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"Connection to SAMR pipe of PDC of domain '%s' failed\n",
r->rpc.in.domain_name);
return status;
}
/* prepare password change for account */
server.name = talloc_asprintf(mem_ctx, "\\\\%s", dcerpc_server_name(c.pdc.out.dcerpc_pipe));
account.name = r->rpc.in.account_name;
E_md4hash(r->rpc.in.oldpassword, old_nt_hash);
E_md4hash(r->rpc.in.newpassword, new_nt_hash);
E_deshash(r->rpc.in.oldpassword, old_lm_hash);
E_deshash(r->rpc.in.newpassword, new_lm_hash);
encode_pw_buffer(lm_pass.data, r->rpc.in.newpassword, STR_UNICODE);
arcfour_crypt(lm_pass.data, old_nt_hash, 516);
E_old_pw_hash(new_lm_hash, old_lm_hash, lm_verifier.hash);
encode_pw_buffer(nt_pass.data, r->rpc.in.newpassword, STR_UNICODE);
arcfour_crypt(nt_pass.data, old_nt_hash, 516);
E_old_pw_hash(new_nt_hash, old_nt_hash, nt_verifier.hash);
pw3.in.server = &server;
pw3.in.account = &account;
pw3.in.nt_password = &nt_pass;
pw3.in.nt_verifier = &nt_verifier;
pw3.in.lm_change = 1;
pw3.in.lm_password = &lm_pass;
pw3.in.lm_verifier = &lm_verifier;
pw3.in.password3 = NULL;
/* do password change for account */
status = dcerpc_samr_ChangePasswordUser3(c.pdc.out.dcerpc_pipe, mem_ctx, &pw3);
if (!NT_STATUS_IS_OK(status)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"ChangePassword3 failed: %s\n",nt_errstr(status));
goto disconnect;
}
/* check result of password change */
if (!NT_STATUS_IS_OK(pw3.out.result)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"ChangePassword3 for '%s\\%s' failed: %s\n",
r->rpc.in.domain_name, r->rpc.in.account_name,
nt_errstr(status));
/* TODO: give the reason of the reject */
goto disconnect;
}
disconnect:
/* close connection */
dcerpc_pipe_close(c.pdc.out.dcerpc_pipe);
return status;
}
static NTSTATUS libnet_ChangePassword_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
NTSTATUS status;
union libnet_ChangePassword r2;
r2.generic.level = LIBNET_CHANGE_PASSWORD_RPC;
r2.rpc.in.account_name = NULL;
r2.rpc.in.domain_name = NULL;
r2.rpc.in.oldpassword = NULL;
r2.rpc.in.newpassword = NULL;
status = libnet_ChangePassword(ctx, mem_ctx, &r2);
r->generic.out.error_string = r2.rpc.out.error_string;
return status;
}
NTSTATUS libnet_ChangePassword(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
switch (r->generic.level) {
case LIBNET_CHANGE_PASSWORD_GENERIC:
return libnet_ChangePassword_generic(ctx, mem_ctx, r);
case LIBNET_CHANGE_PASSWORD_RPC:
return libnet_ChangePassword_rpc(ctx, mem_ctx, r);
case LIBNET_CHANGE_PASSWORD_KRB5:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_CHANGE_PASSWORD_LDAP:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_CHANGE_PASSWORD_RAP:
return NT_STATUS_NOT_IMPLEMENTED;
}
return NT_STATUS_INVALID_LEVEL;
}
/*
* set a password with DCERPC/SAMR calls
*/
static NTSTATUS libnet_SetPassword_rpc(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS libnet_SetPassword_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
NTSTATUS libnet_SetPassword(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
switch (r->generic.level) {
case LIBNET_SET_PASSWORD_GENERIC:
return libnet_SetPassword_generic(ctx, mem_ctx, r);
case LIBNET_SET_PASSWORD_RPC:
return libnet_SetPassword_rpc(ctx, mem_ctx, r);
case LIBNET_SET_PASSWORD_KRB5:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_SET_PASSWORD_LDAP:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_SET_PASSWORD_RAP:
return NT_STATUS_NOT_IMPLEMENTED;
}
return NT_STATUS_INVALID_LEVEL;
}
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