system.c
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 2002 Free Software Foundation, Inc.
This program 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 2, 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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/argp.h>
#include <mailutils/mu_auth.h>
/* System database */
static int
mu_auth_system (void *return_data, struct passwd *pw)
{
char *mailbox_name;
int rc;
if (!pw)
return 1;
mailbox_name = malloc (strlen (mu_path_maildir) +
strlen (pw->pw_name) + 1);
if (!mailbox_name)
return 1;
sprintf (mailbox_name, "%s%s", mu_path_maildir, pw->pw_name);
rc = mu_auth_data_alloc ((struct mu_auth_data **) 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 (void *return_data, void *key,
void *unused_func_data, void *unused_call_data)
{
if (!key)
{
errno = EINVAL;
return 1;
}
return mu_auth_system (return_data, getpwnam (key));
}
static int
mu_auth_system_by_uid (void *return_data, void *key,
void *unused_func_data, void *unused_call_data)
{
if (!key)
{
errno = EINVAL;
return 1;
}
return mu_auth_system (return_data, getpwuid (*(uid_t*) key));
}
static int
mu_authenticate_generic (void *ignored_return_data,
void *key,
void *ignored_func_data,
void *call_data)
{
struct mu_auth_data *auth_data = key;
char *pass = call_data;
return !auth_data
|| !auth_data->passwd
|| strcmp (auth_data->passwd, crypt (pass, auth_data->passwd));
}
/* Called only if generic fails */
static int
mu_authenticate_system (void *ignored_return_data,
void *key,
void *ignored_func_data,
void *call_data)
{
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));
}
#endif
return 1;
}
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
};