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/*
Unix SMB/CIFS implementation.
Copyright (C) Stefan Metzmacher 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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"
#include "libnet/libnet.h"
#include "librpc/gen_ndr/ndr_samr.h"
#include "lib/crypto/crypto.h"
/*
* do a domain join using DCERPC/SAMR calls
* 1. connect to the SAMR pipe of users domain PDC (maybe a standalone server or workstation)
* is it correct to contact the the pdc of the domain of the user who's password should be set?
* 2. do a samr_Connect to get a policy handle
* 3. do a samr_LookupDomain to get the domain sid
* 4. do a samr_OpenDomain to get a domain handle
* 5. do a samr_CreateAccount to try and get a new account
*
* If that fails, do:
* 5.1. do a samr_LookupNames to get the users rid
* 5.2. do a samr_OpenUser to get a user handle
*
* 6. call libnet_SetPassword_samr_handle to set the password
*
* 7. do a samrSetUserInfo to set the account flags
*/
static NTSTATUS libnet_JoinDomain_samr(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_JoinDomain *r)
{
NTSTATUS status;
union libnet_rpc_connect c;
struct samr_Connect sc;
struct policy_handle p_handle;
struct samr_LookupDomain ld;
struct samr_String d_name;
struct samr_OpenDomain od;
struct policy_handle d_handle;
struct samr_LookupNames ln;
struct samr_OpenUser ou;
struct samr_CreateUser2 cu;
struct policy_handle u_handle;
struct samr_SetUserInfo sui;
union samr_UserInfo u_info;
union libnet_SetPassword r2;
struct samr_GetUserPwInfo pwp;
struct samr_String samr_account_name;
uint32 rid, access_granted;
int policy_min_pw_len = 0;
/* prepare connect to the SAMR pipe of users domain PDC */
c.pdc.level = LIBNET_RPC_CONNECT_PDC;
c.pdc.in.domain_name = r->samr.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;
/* 1. connect to the SAMR pipe of users domain PDC (maybe a standalone server or workstation) */
status = libnet_rpc_connect(ctx, mem_ctx, &c);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"Connection to SAMR pipe of PDC of domain '%s' failed: %s\n",
r->samr.in.domain_name, nt_errstr(status));
return status;
}
/* prepare samr_Connect */
ZERO_STRUCT(p_handle);
sc.in.system_name = NULL;
sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
sc.out.connect_handle = &p_handle;
/* 2. do a samr_Connect to get a policy handle */
status = dcerpc_samr_Connect(c.pdc.out.dcerpc_pipe, mem_ctx, &sc);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_Connect failed: %s\n",
nt_errstr(status));
goto disconnect;
}
/* check result of samr_Connect */
if (!NT_STATUS_IS_OK(sc.out.result)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_Connect failed: %s\n",
nt_errstr(sc.out.result));
status = sc.out.result;
goto disconnect;
}
/* prepare samr_LookupDomain */
d_name.string = r->samr.in.domain_name;
ld.in.connect_handle = &p_handle;
ld.in.domain = &d_name;
/* 3. do a samr_LookupDomain to get the domain sid */
status = dcerpc_samr_LookupDomain(c.pdc.out.dcerpc_pipe, mem_ctx, &ld);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_LookupDomain for [%s] failed: %s\n",
r->samr.in.domain_name, nt_errstr(status));
goto disconnect;
}
/* check result of samr_LookupDomain */
if (!NT_STATUS_IS_OK(ld.out.result)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_LookupDomain for [%s] failed: %s\n",
r->samr.in.domain_name, nt_errstr(ld.out.result));
status = ld.out.result;
goto disconnect;
}
/* prepare samr_OpenDomain */
ZERO_STRUCT(d_handle);
od.in.connect_handle = &p_handle;
od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
od.in.sid = ld.out.sid;
od.out.domain_handle = &d_handle;
/* 4. do a samr_OpenDomain to get a domain handle */
status = dcerpc_samr_OpenDomain(c.pdc.out.dcerpc_pipe, mem_ctx, &od);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_OpenDomain for [%s] failed: %s\n",
r->samr.in.domain_name, nt_errstr(status));
goto disconnect;
}
/* prepare samr_CreateUser2 */
ZERO_STRUCT(u_handle);
cu.in.domain_handle = &d_handle;
cu.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
samr_account_name.string = r->samr.in.account_name;
cu.in.account_name = &samr_account_name;
cu.in.acct_flags = r->samr.in.acct_type;
cu.out.user_handle = &u_handle;
cu.out.rid = &rid;
cu.out.access_granted = &access_granted;
/* 4. do a samr_CreateUser2 to get an account handle, or an error */
status = dcerpc_samr_CreateUser2(c.pdc.out.dcerpc_pipe, mem_ctx, &cu);
if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_CreateUser2 for [%s] failed: %s\n",
r->samr.in.domain_name, nt_errstr(status));
goto disconnect;
} else if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
/* prepare samr_LookupNames */
ln.in.domain_handle = &d_handle;
ln.in.num_names = 1;
ln.in.names = talloc_array_p(mem_ctx, struct samr_String, 1);
if (!ln.in.names) {
r->samr.out.error_string = "Out of Memory";
return NT_STATUS_NO_MEMORY;
}
ln.in.names[0].string = r->samr.in.account_name;
/* 5. do a samr_LookupNames to get the users rid */
status = dcerpc_samr_LookupNames(c.pdc.out.dcerpc_pipe, mem_ctx, &ln);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_LookupNames for [%s] failed: %s\n",
r->samr.in.account_name, nt_errstr(status));
goto disconnect;
}
/* check if we got one RID for the user */
if (ln.out.rids.count != 1) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_LookupNames for [%s] returns %d RIDs\n",
r->samr.in.account_name, ln.out.rids.count);
status = NT_STATUS_INVALID_PARAMETER;
goto disconnect;
}
/* prepare samr_OpenUser */
ZERO_STRUCT(u_handle);
ou.in.domain_handle = &d_handle;
ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
ou.in.rid = ln.out.rids.ids[0];
ou.out.user_handle = &u_handle;
/* 6. do a samr_OpenUser to get a user handle */
status = dcerpc_samr_OpenUser(c.pdc.out.dcerpc_pipe, mem_ctx, &ou);
if (!NT_STATUS_IS_OK(status)) {
r->samr.out.error_string = talloc_asprintf(mem_ctx,
"samr_OpenUser for [%s] failed: %s\n",
r->samr.in.account_name, nt_errstr(status));
goto disconnect;
}
}
pwp.in.user_handle = &u_handle;
status = dcerpc_samr_GetUserPwInfo(c.pdc.out.dcerpc_pipe, mem_ctx, &pwp);
if (NT_STATUS_IS_OK(status)) {
policy_min_pw_len = pwp.out.info.min_password_length;
}
r->samr.out.join_password = generate_random_str(mem_ctx, MAX(8, policy_min_pw_len));
r2.samr_handle.level = LIBNET_SET_PASSWORD_SAMR_HANDLE;
r2.samr_handle.in.account_name = r->samr.in.account_name;
r2.samr_handle.in.newpassword = r->samr.out.join_password;
r2.samr_handle.in.user_handle = &u_handle;
r2.samr_handle.in.dcerpc_pipe = c.pdc.out.dcerpc_pipe;
status = libnet_SetPassword(ctx, mem_ctx, &r2);
r->samr.out.error_string = r2.samr_handle.out.error_string;
if (!NT_STATUS_IS_OK(status)) {
goto disconnect;
}
/* prepare samr_SetUserInfo level 23 */
ZERO_STRUCT(u_info);
u_info.info16.acct_flags = r->samr.in.acct_type;
sui.in.user_handle = &u_handle;
sui.in.info = &u_info;
sui.in.level = 16;
dcerpc_samr_SetUserInfo(c.pdc.out.dcerpc_pipe, mem_ctx, &sui);
disconnect:
/* close connection */
dcerpc_pipe_close(c.pdc.out.dcerpc_pipe);
return status;
}
static NTSTATUS libnet_JoinDomain_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_JoinDomain *r)
{
NTSTATUS status;
union libnet_JoinDomain r2;
r2.samr.level = LIBNET_JOIN_DOMAIN_SAMR;
r2.samr.in.account_name = r->generic.in.account_name;
r2.samr.in.domain_name = r->generic.in.domain_name;
r2.samr.in.acct_type = r->generic.in.acct_type;
status = libnet_JoinDomain(ctx, mem_ctx, &r2);
r->generic.out.error_string = r2.samr.out.error_string;
return status;
}
NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_JoinDomain *r)
{
switch (r->generic.level) {
case LIBNET_JOIN_DOMAIN_GENERIC:
return libnet_JoinDomain_generic(ctx, mem_ctx, r);
case LIBNET_JOIN_DOMAIN_SAMR:
return libnet_JoinDomain_samr(ctx, mem_ctx, r);
}
return NT_STATUS_INVALID_LEVEL;
}
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