fragattacks/hostapd/ctrl_iface_ap.c

/*
 * Control interface for shared AP commands
 * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#include "includes.h"

#include "common.h"
#include "ap/hostapd.h"
#include "ap/ieee802_1x.h"
#include "ap/wpa.h"
#include "ap/ieee802_11.h"
#include "ap/sta_info.h"
#include "ap/wps_hostapd.h"
#include "ctrl_iface_ap.h"


static int hostapd_ctrl_iface_sta_mib(struct hostapd_data *hapd,
				      struct sta_info *sta,
				      char *buf, size_t buflen)
{
	int len, res, ret;

	if (sta == NULL) {
		ret = os_snprintf(buf, buflen, "FAIL\n");
		if (ret < 0 || (size_t) ret >= buflen)
			return 0;
		return ret;
	}

	len = 0;
	ret = os_snprintf(buf + len, buflen - len, MACSTR "\n",
			  MAC2STR(sta->addr));
	if (ret < 0 || (size_t) ret >= buflen - len)
		return len;
	len += ret;

	res = ieee802_11_get_mib_sta(hapd, sta, buf + len, buflen - len);
	if (res >= 0)
		len += res;
	res = wpa_get_mib_sta(sta->wpa_sm, buf + len, buflen - len);
	if (res >= 0)
		len += res;
	res = ieee802_1x_get_mib_sta(hapd, sta, buf + len, buflen - len);
	if (res >= 0)
		len += res;
	res = hostapd_wps_get_mib_sta(hapd, sta->addr, buf + len,
				      buflen - len);
	if (res >= 0)
		len += res;

	return len;
}


int hostapd_ctrl_iface_sta_first(struct hostapd_data *hapd,
				 char *buf, size_t buflen)
{
	return hostapd_ctrl_iface_sta_mib(hapd, hapd->sta_list, buf, buflen);
}


int hostapd_ctrl_iface_sta(struct hostapd_data *hapd, const char *txtaddr,
			   char *buf, size_t buflen)
{
	u8 addr[ETH_ALEN];
	int ret;

	if (hwaddr_aton(txtaddr, addr)) {
		ret = os_snprintf(buf, buflen, "FAIL\n");
		if (ret < 0 || (size_t) ret >= buflen)
			return 0;
		return ret;
	}
	return hostapd_ctrl_iface_sta_mib(hapd, ap_get_sta(hapd, addr),
					  buf, buflen);
}


int hostapd_ctrl_iface_sta_next(struct hostapd_data *hapd, const char *txtaddr,
				char *buf, size_t buflen)
{
	u8 addr[ETH_ALEN];
	struct sta_info *sta;
	int ret;

	if (hwaddr_aton(txtaddr, addr) ||
	    (sta = ap_get_sta(hapd, addr)) == NULL) {
		ret = os_snprintf(buf, buflen, "FAIL\n");
		if (ret < 0 || (size_t) ret >= buflen)
			return 0;
		return ret;
	}		
	return hostapd_ctrl_iface_sta_mib(hapd, sta->next, buf, buflen);
}