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/*
Unix SMB/CIFS implementation.
Password and authentication handling
Copyright (C) Andrew Bartlett 2001
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 "system/passwd.h"
#include "../lib/tsocket/tsocket.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
/** Check a plaintext username/password
*
* Cannot deal with an encrypted password in any manner whatsoever,
* unless the account has a null password.
**/
static NTSTATUS check_unix_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;
struct passwd *pass = NULL;
const char *rhost;
DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
if (tsocket_address_is_inet(user_info->remote_host, "ip")) {
rhost = tsocket_address_inet_addr_string(user_info->remote_host,
talloc_tos());
if (rhost == NULL) {
return NT_STATUS_NO_MEMORY;
}
} else {
rhost = "127.0.0.1";
}
become_root();
pass = Get_Pwnam_alloc(talloc_tos(), user_info->mapped.account_name);
/** @todo This call assumes a ASCII password, no charset transformation is
done. We may need to revisit this **/
nt_status = pass_check(pass,
pass ? pass->pw_name : user_info->mapped.account_name,
rhost,
user_info->password.plaintext,
true);
unbecome_root();
if (NT_STATUS_IS_OK(nt_status)) {
if (pass != NULL) {
nt_status = make_server_info_pw(mem_ctx,
pass->pw_name,
pass,
server_info);
} else {
/* we need to do something more useful here */
nt_status = NT_STATUS_NO_SUCH_USER;
}
}
TALLOC_FREE(pass);
return nt_status;
}
/* module initialisation */
static NTSTATUS auth_init_unix(
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->name = "unix";
result->auth = check_unix_security;
*auth_method = result;
return NT_STATUS_OK;
}
NTSTATUS auth_unix_init(TALLOC_CTX *mem_ctx)
{
return smb_register_auth(AUTH_INTERFACE_VERSION, "unix", auth_init_unix);
}
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