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/*
Unix SMB/CIFS implementation.
Authentication utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Andrew Bartlett 2001-2010
Copyright (C) Jeremy Allison 2000-2001
Copyright (C) Rafal Szczesniak 2002
Copyright (C) Stefan Metzmacher 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 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/security/security.h"
#include "auth/credentials/credentials.h"
#include "param/param.h"
#include "auth/auth.h" /* for auth_user_info_dc */
#include "auth/session.h"
#include "auth/system_session_proto.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
/*
prevent the static system session being freed
*/
static int system_session_destructor(struct auth_session_info *info)
{
return -1;
}
/* Create a security token for a session SYSTEM (the most
* trusted/prvilaged account), including the local machine account as
* the off-host credentials
*/
_PUBLIC_ struct auth_session_info *system_session(struct loadparm_context *lp_ctx)
{
static struct auth_session_info *static_session;
NTSTATUS nt_status;
if (static_session) {
return static_session;
}
/*
* Use NULL here, not the autofree context for this
* static pointer. The destructor prevents freeing this
* memory anyway.
*/
nt_status = auth_system_session_info(NULL,
lp_ctx,
&static_session);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(static_session);
static_session = NULL;
return NULL;
}
talloc_set_destructor(static_session, system_session_destructor);
return static_session;
}
NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx,
struct loadparm_context *lp_ctx,
struct auth_session_info **_session_info)
{
NTSTATUS nt_status;
struct auth_user_info_dc *user_info_dc = NULL;
struct auth_session_info *session_info = NULL;
TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
nt_status = auth_system_user_info_dc(mem_ctx, lpcfg_netbios_name(lp_ctx),
&user_info_dc);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
/* references the user_info_dc into the session_info */
nt_status = auth_generate_session_info(parent_ctx, NULL, NULL, user_info_dc, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES, &session_info);
talloc_free(mem_ctx);
NT_STATUS_NOT_OK_RETURN(nt_status);
session_info->credentials = cli_credentials_init(session_info);
if (!session_info->credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(session_info->credentials, lp_ctx);
cli_credentials_set_machine_account_pending(session_info->credentials, lp_ctx);
*_session_info = session_info;
return NT_STATUS_OK;
}
NTSTATUS auth_system_user_info_dc(TALLOC_CTX *mem_ctx, const char *netbios_name,
struct auth_user_info_dc **_user_info_dc)
{
struct auth_user_info_dc *user_info_dc;
struct auth_user_info *info;
user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
/* This returns a pointer to a struct dom_sid, which is the
* same as a 1 element list of struct dom_sid */
user_info_dc->num_sids = 1;
user_info_dc->sids = dom_sid_parse_talloc(user_info_dc, SID_NT_SYSTEM);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
/* annoying, but the Anonymous really does have a session key,
and it is all zeros! */
user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
data_blob_clear(&user_info_dc->user_session_key);
data_blob_clear(&user_info_dc->lm_session_key);
user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
info->account_name = talloc_strdup(info, "SYSTEM");
NT_STATUS_HAVE_NO_MEMORY(info->account_name);
info->domain_name = talloc_strdup(info, "NT AUTHORITY");
NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
info->full_name = talloc_strdup(info, "System");
NT_STATUS_HAVE_NO_MEMORY(info->full_name);
info->logon_script = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
info->profile_path = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
info->home_directory = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
info->home_drive = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
info->logon_server = talloc_strdup(info, netbios_name);
NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
info->last_logon = 0;
info->last_logoff = 0;
info->acct_expiry = 0;
info->last_password_change = 0;
info->allow_password_change = 0;
info->force_password_change = 0;
info->logon_count = 0;
info->bad_password_count = 0;
info->acct_flags = ACB_NORMAL;
info->authenticated = true;
*_user_info_dc = user_info_dc;
return NT_STATUS_OK;
}
static NTSTATUS auth_domain_admin_user_info_dc(TALLOC_CTX *mem_ctx,
const char *netbios_name,
const char *domain_name,
struct dom_sid *domain_sid,
struct auth_user_info_dc **_user_info_dc)
{
struct auth_user_info_dc *user_info_dc;
struct auth_user_info *info;
user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
user_info_dc->num_sids = 7;
user_info_dc->sids = talloc_array(user_info_dc, struct dom_sid, user_info_dc->num_sids);
user_info_dc->sids[PRIMARY_USER_SID_INDEX] = *domain_sid;
sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX], DOMAIN_RID_ADMINISTRATOR);
user_info_dc->sids[PRIMARY_GROUP_SID_INDEX] = *domain_sid;
sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], DOMAIN_RID_USERS);
user_info_dc->sids[2] = global_sid_Builtin_Administrators;
user_info_dc->sids[3] = *domain_sid;
sid_append_rid(&user_info_dc->sids[3], DOMAIN_RID_ADMINS);
user_info_dc->sids[4] = *domain_sid;
sid_append_rid(&user_info_dc->sids[4], DOMAIN_RID_ENTERPRISE_ADMINS);
user_info_dc->sids[5] = *domain_sid;
sid_append_rid(&user_info_dc->sids[5], DOMAIN_RID_POLICY_ADMINS);
user_info_dc->sids[6] = *domain_sid;
sid_append_rid(&user_info_dc->sids[6], DOMAIN_RID_SCHEMA_ADMINS);
/* What should the session key be?*/
user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
data_blob_clear(&user_info_dc->user_session_key);
data_blob_clear(&user_info_dc->lm_session_key);
user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
info->account_name = talloc_strdup(info, "Administrator");
NT_STATUS_HAVE_NO_MEMORY(info->account_name);
info->domain_name = talloc_strdup(info, domain_name);
NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
info->full_name = talloc_strdup(info, "Administrator");
NT_STATUS_HAVE_NO_MEMORY(info->full_name);
info->logon_script = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
info->profile_path = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
info->home_directory = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
info->home_drive = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
info->logon_server = talloc_strdup(info, netbios_name);
NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
info->last_logon = 0;
info->last_logoff = 0;
info->acct_expiry = 0;
info->last_password_change = 0;
info->allow_password_change = 0;
info->force_password_change = 0;
info->logon_count = 0;
info->bad_password_count = 0;
info->acct_flags = ACB_NORMAL;
info->authenticated = true;
*_user_info_dc = user_info_dc;
return NT_STATUS_OK;
}
static NTSTATUS auth_domain_admin_session_info(TALLOC_CTX *parent_ctx,
struct loadparm_context *lp_ctx,
struct dom_sid *domain_sid,
struct auth_session_info **session_info)
{
NTSTATUS nt_status;
struct auth_user_info_dc *user_info_dc = NULL;
TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
nt_status = auth_domain_admin_user_info_dc(mem_ctx, lpcfg_netbios_name(lp_ctx),
lpcfg_workgroup(lp_ctx), domain_sid,
&user_info_dc);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
nt_status = auth_generate_session_info(mem_ctx, NULL, NULL, user_info_dc,
AUTH_SESSION_INFO_SIMPLE_PRIVILEGES|AUTH_SESSION_INFO_AUTHENTICATED|AUTH_SESSION_INFO_DEFAULT_GROUPS,
session_info);
/* There is already a reference between the sesion_info and user_info_dc */
if (NT_STATUS_IS_OK(nt_status)) {
talloc_steal(parent_ctx, *session_info);
}
talloc_free(mem_ctx);
return nt_status;
}
_PUBLIC_ struct auth_session_info *admin_session(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, struct dom_sid *domain_sid)
{
NTSTATUS nt_status;
struct auth_session_info *session_info = NULL;
nt_status = auth_domain_admin_session_info(mem_ctx,
lp_ctx,
domain_sid,
&session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
return NULL;
}
return session_info;
}
_PUBLIC_ NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx,
struct loadparm_context *lp_ctx,
struct auth_session_info **_session_info)
{
NTSTATUS nt_status;
struct auth_user_info_dc *user_info_dc = NULL;
struct auth_session_info *session_info = NULL;
TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
nt_status = auth_anonymous_user_info_dc(mem_ctx,
lpcfg_netbios_name(lp_ctx),
&user_info_dc);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
/* references the user_info_dc into the session_info */
nt_status = auth_generate_session_info(parent_ctx, NULL, NULL, user_info_dc, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES, &session_info);
talloc_free(mem_ctx);
NT_STATUS_NOT_OK_RETURN(nt_status);
session_info->credentials = cli_credentials_init(session_info);
if (!session_info->credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(session_info->credentials, lp_ctx);
cli_credentials_set_anonymous(session_info->credentials);
*_session_info = session_info;
return NT_STATUS_OK;
}
_PUBLIC_ NTSTATUS auth_anonymous_user_info_dc(TALLOC_CTX *mem_ctx,
const char *netbios_name,
struct auth_user_info_dc **_user_info_dc)
{
struct auth_user_info_dc *user_info_dc;
struct auth_user_info *info;
user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
/* This returns a pointer to a struct dom_sid, which is the
* same as a 1 element list of struct dom_sid */
user_info_dc->num_sids = 1;
user_info_dc->sids = dom_sid_parse_talloc(user_info_dc, SID_NT_ANONYMOUS);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
/* annoying, but the Anonymous really does have a session key... */
user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
/* and it is all zeros! */
data_blob_clear(&user_info_dc->user_session_key);
data_blob_clear(&user_info_dc->lm_session_key);
user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
info->account_name = talloc_strdup(info, "ANONYMOUS LOGON");
NT_STATUS_HAVE_NO_MEMORY(info->account_name);
info->domain_name = talloc_strdup(info, "NT AUTHORITY");
NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
info->full_name = talloc_strdup(info, "Anonymous Logon");
NT_STATUS_HAVE_NO_MEMORY(info->full_name);
info->logon_script = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
info->profile_path = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
info->home_directory = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
info->home_drive = talloc_strdup(info, "");
NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
info->logon_server = talloc_strdup(info, netbios_name);
NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
info->last_logon = 0;
info->last_logoff = 0;
info->acct_expiry = 0;
info->last_password_change = 0;
info->allow_password_change = 0;
info->force_password_change = 0;
info->logon_count = 0;
info->bad_password_count = 0;
info->acct_flags = ACB_NORMAL;
info->authenticated = false;
*_user_info_dc = user_info_dc;
return NT_STATUS_OK;
}
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