tcpwrap.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2001, 2002, 2003, 2004,
2005, 2006, 2007 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils; 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 <syslog.h>
#include <string.h>
#include <mailutils/debug.h>
#include <mailutils/nls.h>
#include <mailutils/syslog.h>
#include <mailutils/cfg.h>
#include <mailutils/diag.h>
int mu_tcp_wrapper_enable = 1;
char *mu_tcp_wrapper_daemon;
#ifdef WITH_LIBWRAP
# include <tcpd.h>
int deny_severity = LOG_INFO;
int allow_severity = LOG_INFO;
int
mu_tcp_wrapper_cb_hosts_allow (mu_debug_t debug, void *data, char *arg)
{
hosts_allow_table = strdup (arg);
return 0;
}
int
mu_tcp_wrapper_cb_hosts_deny (mu_debug_t debug, void *data, char *arg)
{
hosts_deny_table = strdup (arg);
return 0;
}
int
mu_tcp_wrapper_cb_hosts_allow_syslog (mu_debug_t debug, void *data,
char *arg)
{
if (mu_string_to_syslog_facility (arg, &allow_severity))
mu_cfg_format_error (debug, MU_DEBUG_ERROR,
_("Unknown syslog facility `%s'"),
arg);
return 0;
}
int
mu_tcp_wrapper_cb_hosts_deny_syslog (mu_debug_t debug, void *data, char *arg)
{
if (mu_string_to_syslog_facility (arg, &deny_severity))
mu_cfg_format_error (debug, MU_DEBUG_ERROR,
_("Unknown syslog facility `%s'"),
arg);
return 0;
}
int
mu_tcpwrapper_access (int fd)
{
struct request_info req;
if (!mu_tcp_wrapper_enable)
return 1;
request_init (&req,
RQ_DAEMON,
mu_tcp_wrapper_daemon ?
mu_tcp_wrapper_daemon : mu_program_name,
RQ_FILE, fd, NULL);
fromhost (&req);
return hosts_access (&req);
}
#else
int
mu_tcpwrapper_access (int fd)
{
return 1;
}
#endif