system.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2002, 2007 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
#ifdef HAVE_SHADOW_H
# include <shadow.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_CRYPT_H
# include <crypt.h>
#endif
#include <mailutils/list.h>
#include <mailutils/iterator.h>
#include <mailutils/mailbox.h>
#include <mailutils/mu_auth.h>
#include <mailutils/errno.h>
/* System database */
static int
mu_auth_system (struct mu_auth_data **return_data, const struct passwd *pw)
{
char *mailbox_name;
int rc;
if (!pw)
return MU_ERR_AUTH_FAILURE;
rc = mu_construct_user_mailbox_url (&mailbox_name, pw->pw_name);
if (rc)
return rc; /* FIXME: Return code is lost */
rc = mu_auth_data_alloc (return_data,
pw->pw_name,
pw->pw_passwd,
pw->pw_uid,
pw->pw_gid,
pw->pw_gecos,
pw->pw_dir,
pw->pw_shell,
mailbox_name,
1);
free (mailbox_name);
return rc;
}
int
mu_auth_system_by_name (struct mu_auth_data **return_data,
const void *key,
void *func_data MU_ARG_UNUSED,
void *call_data MU_ARG_UNUSED)
{
if (!key)
return EINVAL;
return mu_auth_system (return_data, getpwnam (key));
}
static int
mu_auth_system_by_uid (struct mu_auth_data **return_data,
const void *key,
void *func_data MU_ARG_UNUSED,
void *call_data MU_ARG_UNUSED)
{
if (!key)
return EINVAL;
return mu_auth_system (return_data, getpwuid (*(uid_t*) key));
}
static int
mu_authenticate_generic (struct mu_auth_data **return_data MU_ARG_UNUSED,
const void *key,
void *func_data MU_ARG_UNUSED,
void *call_data)
{
const struct mu_auth_data *auth_data = key;
char *pass = call_data;
if (!auth_data || !pass)
return EINVAL;
return auth_data->passwd
&& strcmp (auth_data->passwd, crypt (pass, auth_data->passwd)) == 0 ?
0 : MU_ERR_AUTH_FAILURE;
}
/* Called only if generic fails */
static int
mu_authenticate_system (struct mu_auth_data **return_data MU_ARG_UNUSED,
const void *key,
void *func_data MU_ARG_UNUSED,
void *call_data)
{
const struct mu_auth_data *auth_data = key;
char *pass = call_data;
#ifdef HAVE_SHADOW_H
if (auth_data)
{
struct spwd *spw;
spw = getspnam (auth_data->name);
if (spw)
return strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp)) == 0 ?
0 : MU_ERR_AUTH_FAILURE;
}
#endif
return MU_ERR_AUTH_FAILURE;
}
struct mu_auth_module mu_auth_system_module = {
"system",
NULL,
mu_authenticate_system,
NULL,
mu_auth_system_by_name,
NULL,
mu_auth_system_by_uid,
NULL
};
struct mu_auth_module mu_auth_generic_module = {
"generic",
NULL,
mu_authenticate_generic,
NULL,
mu_auth_nosupport,
NULL,
mu_auth_nosupport,
NULL
};