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/*
Unix SMB/CIFS implementation.
Generic authentication types
Copyright (C) Andrew Bartlett 2001-2002
Copyright (C) Jelmer Vernooij 2002
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 "auth.h"
#include "lib/util/string_wrappers.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
/**
* Return a guest logon for anonymous users (username = "")
*
* Typically used as the first module in the auth chain, this allows
* guest logons to be dealt with in one place. Non-guest logons 'fail'
* and pass onto the next module.
**/
static NTSTATUS check_anonymous_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info)
{
DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
if (user_info->mapped.account_name && *user_info->mapped.account_name) {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
switch (user_info->password_state) {
case AUTH_PASSWORD_PLAIN:
if (user_info->password.plaintext != NULL &&
strlen(user_info->password.plaintext) > 0)
{
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
break;
case AUTH_PASSWORD_HASH:
if (user_info->password.hash.lanman != NULL) {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
if (user_info->password.hash.nt != NULL) {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
break;
case AUTH_PASSWORD_RESPONSE:
if (user_info->password.response.lanman.length == 1) {
if (user_info->password.response.lanman.data[0] != '\0') {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
} else if (user_info->password.response.lanman.length > 1) {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
if (user_info->password.response.nt.length > 0) {
/* mark this as 'not for me' */
return NT_STATUS_NOT_IMPLEMENTED;
}
break;
}
return make_server_info_anonymous(NULL, server_info);
}
/* Guest modules initialisation */
static NTSTATUS auth_init_anonymous(
struct auth_context *auth_context,
const char *options,
struct auth_methods **auth_method)
{
struct auth_methods *result;
result = talloc_zero(auth_context, struct auth_methods);
if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
result->auth = check_anonymous_security;
result->name = "anonymous";
*auth_method = result;
return NT_STATUS_OK;
}
#ifdef DEVELOPER
/**
* Return an error based on username
*
* This function allows the testing of obscure errors, as well as the generation
* of NT_STATUS -> DOS error mapping tables.
*
* This module is of no value to end-users.
*
* The password is ignored.
*
* @return An NTSTATUS value based on the username
**/
static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info)
{
NTSTATUS nt_status;
fstring user;
long error_num;
DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
fstrcpy(user, user_info->client.account_name);
if (strnequal("NT_STATUS", user, strlen("NT_STATUS"))) {
if (!strupper_m(user)) {
return NT_STATUS_INVALID_PARAMETER;
}
return nt_status_string_to_code(user);
}
if (!strlower_m(user)) {
return NT_STATUS_INVALID_PARAMETER;
}
error_num = strtoul(user, NULL, 16);
DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user, error_num));
nt_status = NT_STATUS(error_num);
return nt_status;
}
/** Module initialisation function */
static NTSTATUS auth_init_name_to_ntstatus(
struct auth_context *auth_context,
const char *param,
struct auth_methods **auth_method)
{
struct auth_methods *result;
result = talloc_zero(auth_context, struct auth_methods);
if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
result->auth = check_name_to_ntstatus_security;
result->name = "name_to_ntstatus";
*auth_method = result;
return NT_STATUS_OK;
}
#endif /* DEVELOPER */
NTSTATUS auth_builtin_init(TALLOC_CTX *mem_ctx)
{
smb_register_auth(AUTH_INTERFACE_VERSION, "anonymous", auth_init_anonymous);
#ifdef DEVELOPER
smb_register_auth(AUTH_INTERFACE_VERSION, "name_to_ntstatus", auth_init_name_to_ntstatus);
#endif
return NT_STATUS_OK;
}
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