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/*
* $Id: pptpd-logwtmp.c,v 1.6 2013/02/07 00:37:39 quozl Exp $
* pptpd-logwtmp.c - pppd plugin to update wtmp for a pptpd user
*
* Copyright 2004 James Cameron.
*
* 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
* 2 of the License, or (at your option) any later version.
*/
#include <unistd.h>
#include <utmp.h>
#include <string.h>
#include <linux/if.h>
#include <linux/limits.h>
#include <pppd/pppd.h>
#include <pppd/options.h>
char pppd_version[] = PPPD_VERSION;
static char pptpd_original_ip[PATH_MAX+1];
static bool pptpd_logwtmp_strip_domain = 0;
static option_t options[] = {
{ "pptpd-original-ip", o_string, pptpd_original_ip,
"Original IP address of the PPTP connection",
OPT_STATIC, NULL, PATH_MAX },
{ "pptpd-logwtmp-strip-domain", o_bool, &pptpd_logwtmp_strip_domain,
"Strip domain from username before logging", OPT_PRIO | 1 },
{ NULL }
};
static const char *reduce(const char *user)
{
char *sep;
if (!pptpd_logwtmp_strip_domain) return user;
sep = strstr(user, "//"); /* two slash */
if (sep != NULL) user = sep + 2;
sep = strstr(user, "\\"); /* or one backslash */
if (sep != NULL) user = sep + 1;
return user;
}
static void ip_up(void *opaque, int arg)
{
char ifname[IFNAMSIZ];
const char *user = reduce(ppp_peer_authname(NULL, 0));
ppp_get_ifname(ifname, sizeof(ifname));
if (debug_on())
notice("pptpd-logwtmp.so ip-up %s %s %s", ifname, user,
pptpd_original_ip);
logwtmp(ifname, user, pptpd_original_ip);
}
static void ip_down(void *opaque, int arg)
{
char ifname[IFNAMSIZ];
ppp_get_ifname(ifname, sizeof(ifname));
if (debug_on())
notice("pptpd-logwtmp.so ip-down %s", ifname);
logwtmp(ifname, "", "");
}
void plugin_init(void)
{
ppp_add_options(options);
ppp_add_notify(NF_IP_UP, ip_up, NULL);
ppp_add_notify(NF_IP_DOWN, ip_down, NULL);
if (debug_on())
notice("pptpd-logwtmp: $Version$");
}
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