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fragattacks/src/drivers/driver_madwifi.c
Jouni Malinen 0e2e565a44 WPS 2.0: Provide (Re)Association Response WPS IE to driver 
WPS 2.0 mandates the AP to include WPS IE in (Re)Association Response
if the matching (Re)Association Request included WPS IE. Provide the
needed WPS IE information to the driver_ops API for drivers that
process association frames internally.

Note: This modifies the driver_ops API by adding a new argument to
set_ap_wps_ie().
2010-09-22 10:46:44 -07:00

1856 lines
49 KiB
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/*
* WPA Supplicant - driver interaction with MADWIFI 802.11 driver
* Copyright (c) 2004, Sam Leffler <sam@errno.com>
* Copyright (c) 2004, Video54 Technologies
* Copyright (c) 2004-2007, 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.
*
* While this driver wrapper supports both AP (hostapd) and station
* (wpa_supplicant) operations, the station side is deprecated and
* driver_wext.c should be used instead. This driver wrapper should only be
* used with hostapd for AP mode functionality.
*/
#include "includes.h"
#include <sys/ioctl.h>
#include "common.h"
#include "driver.h"
#include "driver_wext.h"
#include "eloop.h"
#include "common/ieee802_11_defs.h"
#include "wireless_copy.h"
/*
* Avoid conflicts with wpa_supplicant definitions by undefining a definition.
*/
#undef WME_OUI_TYPE
#include <include/compat.h>
#include <net80211/ieee80211.h>
#ifdef WME_NUM_AC
/* Assume this is built against BSD branch of madwifi driver. */
#define MADWIFI_BSD
#include <net80211/_ieee80211.h>
#endif /* WME_NUM_AC */
#include <net80211/ieee80211_crypto.h>
#include <net80211/ieee80211_ioctl.h>
#ifdef CONFIG_WPS
#ifdef IEEE80211_IOCTL_FILTERFRAME
#include <netpacket/packet.h>
#ifndef ETH_P_80211_RAW
#define ETH_P_80211_RAW 0x0019
#endif
#endif /* IEEE80211_IOCTL_FILTERFRAME */
#endif /* CONFIG_WPS */
/*
* Avoid conflicts with hostapd definitions by undefining couple of defines
* from madwifi header files.
*/
#undef RSN_VERSION
#undef WPA_VERSION
#undef WPA_OUI_TYPE
#undef WME_OUI_TYPE
#ifdef IEEE80211_IOCTL_SETWMMPARAMS
/* Assume this is built against madwifi-ng */
#define MADWIFI_NG
#endif /* IEEE80211_IOCTL_SETWMMPARAMS */
#ifdef HOSTAPD
#include "priv_netlink.h"
#include "netlink.h"
#include "linux_ioctl.h"
#include "l2_packet/l2_packet.h"
struct madwifi_driver_data {
struct hostapd_data *hapd; /* back pointer */
char iface[IFNAMSIZ + 1];
int ifindex;
struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
struct l2_packet_data *sock_recv; /* raw packet recv socket */
int ioctl_sock; /* socket for ioctl() use */
struct netlink_data *netlink;
int we_version;
u8 acct_mac[ETH_ALEN];
struct hostap_sta_driver_data acct_data;
struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
};
static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
int reason_code);
static int
set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
{
struct iwreq iwr;
int do_inline = len < IFNAMSIZ;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
#ifdef IEEE80211_IOCTL_FILTERFRAME
/* FILTERFRAME must be NOT inline, regardless of size. */
if (op == IEEE80211_IOCTL_FILTERFRAME)
do_inline = 0;
#endif /* IEEE80211_IOCTL_FILTERFRAME */
if (op == IEEE80211_IOCTL_SET_APPIEBUF)
do_inline = 0;
if (do_inline) {
/*
* Argument data fits inline; put it there.
*/
memcpy(iwr.u.name, data, len);
} else {
/*
* Argument data too big for inline transfer; setup a
* parameter block instead; the kernel will transfer
* the data for the driver.
*/
iwr.u.data.pointer = data;
iwr.u.data.length = len;
}
if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
#ifdef MADWIFI_NG
int first = IEEE80211_IOCTL_SETPARAM;
static const char *opnames[] = {
"ioctl[IEEE80211_IOCTL_SETPARAM]",
"ioctl[IEEE80211_IOCTL_GETPARAM]",
"ioctl[IEEE80211_IOCTL_SETMODE]",
"ioctl[IEEE80211_IOCTL_GETMODE]",
"ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
"ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
"ioctl[IEEE80211_IOCTL_SETCHANLIST]",
"ioctl[IEEE80211_IOCTL_GETCHANLIST]",
"ioctl[IEEE80211_IOCTL_CHANSWITCH]",
"ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
"ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
"ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
"ioctl[IEEE80211_IOCTL_FILTERFRAME]",
"ioctl[IEEE80211_IOCTL_GETCHANINFO]",
"ioctl[IEEE80211_IOCTL_SETOPTIE]",
"ioctl[IEEE80211_IOCTL_GETOPTIE]",
"ioctl[IEEE80211_IOCTL_SETMLME]",
NULL,
"ioctl[IEEE80211_IOCTL_SETKEY]",
NULL,
"ioctl[IEEE80211_IOCTL_DELKEY]",
NULL,
"ioctl[IEEE80211_IOCTL_ADDMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_DELMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_WDSMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_WDSDELMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_KICKMAC]",
};
#else /* MADWIFI_NG */
int first = IEEE80211_IOCTL_SETPARAM;
static const char *opnames[] = {
"ioctl[IEEE80211_IOCTL_SETPARAM]",
"ioctl[IEEE80211_IOCTL_GETPARAM]",
"ioctl[IEEE80211_IOCTL_SETKEY]",
"ioctl[SIOCIWFIRSTPRIV+3]",
"ioctl[IEEE80211_IOCTL_DELKEY]",
"ioctl[SIOCIWFIRSTPRIV+5]",
"ioctl[IEEE80211_IOCTL_SETMLME]",
"ioctl[SIOCIWFIRSTPRIV+7]",
"ioctl[IEEE80211_IOCTL_SETOPTIE]",
"ioctl[IEEE80211_IOCTL_GETOPTIE]",
"ioctl[IEEE80211_IOCTL_ADDMAC]",
"ioctl[SIOCIWFIRSTPRIV+11]",
"ioctl[IEEE80211_IOCTL_DELMAC]",
"ioctl[SIOCIWFIRSTPRIV+13]",
"ioctl[IEEE80211_IOCTL_CHANLIST]",
"ioctl[SIOCIWFIRSTPRIV+15]",
"ioctl[IEEE80211_IOCTL_GETRSN]",
"ioctl[SIOCIWFIRSTPRIV+17]",
"ioctl[IEEE80211_IOCTL_GETKEY]",
};
#endif /* MADWIFI_NG */
int idx = op - first;
if (first <= op &&
idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
opnames[idx])
perror(opnames[idx]);
else
perror("ioctl[unknown???]");
return -1;
}
return 0;
}
static int
set80211param(struct madwifi_driver_data *drv, int op, int arg)
{
struct iwreq iwr;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.mode = op;
memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
"arg %d)", __func__, op, arg);
return -1;
}
return 0;
}
#ifndef CONFIG_NO_STDOUT_DEBUG
static const char *
ether_sprintf(const u8 *addr)
{
static char buf[sizeof(MACSTR)];
if (addr != NULL)
snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
else
snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
return buf;
}
#endif /* CONFIG_NO_STDOUT_DEBUG */
/*
* Configure WPA parameters.
*/
static int
madwifi_configure_wpa(struct madwifi_driver_data *drv,
struct wpa_bss_params *params)
{
int v;
switch (params->wpa_group) {
case WPA_CIPHER_CCMP:
v = IEEE80211_CIPHER_AES_CCM;
break;
case WPA_CIPHER_TKIP:
v = IEEE80211_CIPHER_TKIP;
break;
case WPA_CIPHER_WEP104:
v = IEEE80211_CIPHER_WEP;
break;
case WPA_CIPHER_WEP40:
v = IEEE80211_CIPHER_WEP;
break;
case WPA_CIPHER_NONE:
v = IEEE80211_CIPHER_NONE;
break;
default:
wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
params->wpa_group);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
printf("Unable to set group key cipher to %u\n", v);
return -1;
}
if (v == IEEE80211_CIPHER_WEP) {
/* key length is done only for specific ciphers */
v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
printf("Unable to set group key length to %u\n", v);
return -1;
}
}
v = 0;
if (params->wpa_pairwise & WPA_CIPHER_CCMP)
v |= 1<<IEEE80211_CIPHER_AES_CCM;
if (params->wpa_pairwise & WPA_CIPHER_TKIP)
v |= 1<<IEEE80211_CIPHER_TKIP;
if (params->wpa_pairwise & WPA_CIPHER_NONE)
v |= 1<<IEEE80211_CIPHER_NONE;
wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
printf("Unable to set pairwise key ciphers to 0x%x\n", v);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
__func__, params->wpa_key_mgmt);
if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS,
params->wpa_key_mgmt)) {
printf("Unable to set key management algorithms to 0x%x\n",
params->wpa_key_mgmt);
return -1;
}
v = 0;
if (params->rsn_preauth)
v |= BIT(0);
wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
__func__, params->rsn_preauth);
if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
printf("Unable to set RSN capabilities to 0x%x\n", v);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, params->wpa);
if (set80211param(drv, IEEE80211_PARAM_WPA, params->wpa)) {
printf("Unable to set WPA to %u\n", params->wpa);
return -1;
}
return 0;
}
static int
madwifi_set_ieee8021x(void *priv, struct wpa_bss_params *params)
{
struct madwifi_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
if (!params->enabled) {
/* XXX restore state */
return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
IEEE80211_AUTH_AUTO);
}
if (!params->wpa && !params->ieee802_1x) {
hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
return -1;
}
if (params->wpa && madwifi_configure_wpa(drv, params) != 0) {
hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
return -1;
}
if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
(params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
return -1;
}
return 0;
}
static int
madwifi_set_privacy(void *priv, int enabled)
{
struct madwifi_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
}
static int
madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
int ret;
wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
__func__, ether_sprintf(addr), authorized);
if (authorized)
mlme.im_op = IEEE80211_MLME_AUTHORIZE;
else
mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
mlme.im_reason = 0;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
__func__, authorized ? "" : "un", MAC2STR(addr));
}
return ret;
}
static int
madwifi_sta_set_flags(void *priv, const u8 *addr,
int total_flags, int flags_or, int flags_and)
{
/* For now, only support setting Authorized flag */
if (flags_or & WPA_STA_AUTHORIZED)
return madwifi_set_sta_authorized(priv, addr, 1);
if (!(flags_and & WPA_STA_AUTHORIZED))
return madwifi_set_sta_authorized(priv, addr, 0);
return 0;
}
static int
madwifi_del_key(void *priv, const u8 *addr, int key_idx)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_del_key wk;
int ret;
wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
__func__, ether_sprintf(addr), key_idx);
memset(&wk, 0, sizeof(wk));
if (addr != NULL) {
memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
} else {
wk.idk_keyix = key_idx;
}
ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
" key_idx %d)", __func__, ether_sprintf(addr),
key_idx);
}
return ret;
}
static int
wpa_driver_madwifi_set_key(const char *ifname, void *priv, enum wpa_alg alg,
const u8 *addr, int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_key wk;
u_int8_t cipher;
int ret;
if (alg == WPA_ALG_NONE)
return madwifi_del_key(drv, addr, key_idx);
wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
__func__, alg, ether_sprintf(addr), key_idx);
if (alg == WPA_ALG_WEP)
cipher = IEEE80211_CIPHER_WEP;
else if (alg == WPA_ALG_TKIP)
cipher = IEEE80211_CIPHER_TKIP;
else if (alg == WPA_ALG_CCMP)
cipher = IEEE80211_CIPHER_AES_CCM;
else {
printf("%s: unknown/unsupported algorithm %d\n",
__func__, alg);
return -1;
}
if (key_len > sizeof(wk.ik_keydata)) {
printf("%s: key length %lu too big\n", __func__,
(unsigned long) key_len);
return -3;
}
memset(&wk, 0, sizeof(wk));
wk.ik_type = cipher;
wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
if (addr == NULL) {
memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
wk.ik_keyix = key_idx;
wk.ik_flags |= IEEE80211_KEY_DEFAULT;
} else {
memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
wk.ik_keyix = IEEE80211_KEYIX_NONE;
}
wk.ik_keylen = key_len;
memcpy(wk.ik_keydata, key, key_len);
ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
" key_idx %d alg %d key_len %lu set_tx %d)",
__func__, ether_sprintf(wk.ik_macaddr), key_idx,
alg, (unsigned long) key_len, set_tx);
}
return ret;
}
static int
madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
u8 *seq)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_key wk;
wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
__func__, ether_sprintf(addr), idx);
memset(&wk, 0, sizeof(wk));
if (addr == NULL)
memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
else
memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
wk.ik_keyix = idx;
if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
"(addr " MACSTR " key_idx %d)",
__func__, MAC2STR(wk.ik_macaddr), idx);
return -1;
}
#ifdef WORDS_BIGENDIAN
{
/*
* wk.ik_keytsc is in host byte order (big endian), need to
* swap it to match with the byte order used in WPA.
*/
int i;
u8 tmp[WPA_KEY_RSC_LEN];
memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
}
}
#else /* WORDS_BIGENDIAN */
memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
#endif /* WORDS_BIGENDIAN */
return 0;
}
static int
madwifi_flush(void *priv)
{
#ifdef MADWIFI_BSD
u8 allsta[IEEE80211_ADDR_LEN];
memset(allsta, 0xff, IEEE80211_ADDR_LEN);
return madwifi_sta_deauth(priv, NULL, allsta,
IEEE80211_REASON_AUTH_LEAVE);
#else /* MADWIFI_BSD */
return 0; /* XXX */
#endif /* MADWIFI_BSD */
}
static int
madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
const u8 *addr)
{
struct madwifi_driver_data *drv = priv;
#ifdef MADWIFI_BSD
struct ieee80211req_sta_stats stats;
memset(data, 0, sizeof(*data));
/*
* Fetch statistics for station from the system.
*/
memset(&stats, 0, sizeof(stats));
memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
if (set80211priv(drv,
#ifdef MADWIFI_NG
IEEE80211_IOCTL_STA_STATS,
#else /* MADWIFI_NG */
IEEE80211_IOCTL_GETSTASTATS,
#endif /* MADWIFI_NG */
&stats, sizeof(stats))) {
wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
MACSTR ")", __func__, MAC2STR(addr));
if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
memcpy(data, &drv->acct_data, sizeof(*data));
return 0;
}
printf("Failed to get station stats information element.\n");
return -1;
}
data->rx_packets = stats.is_stats.ns_rx_data;
data->rx_bytes = stats.is_stats.ns_rx_bytes;
data->tx_packets = stats.is_stats.ns_tx_data;
data->tx_bytes = stats.is_stats.ns_tx_bytes;
return 0;
#else /* MADWIFI_BSD */
char buf[1024], line[128], *pos;
FILE *f;
unsigned long val;
memset(data, 0, sizeof(*data));
snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
drv->iface, MAC2STR(addr));
f = fopen(buf, "r");
if (!f) {
if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
return -1;
memcpy(data, &drv->acct_data, sizeof(*data));
return 0;
}
/* Need to read proc file with in one piece, so use large enough
* buffer. */
setbuffer(f, buf, sizeof(buf));
while (fgets(line, sizeof(line), f)) {
pos = strchr(line, '=');
if (!pos)
continue;
*pos++ = '\0';
val = strtoul(pos, NULL, 10);
if (strcmp(line, "rx_packets") == 0)
data->rx_packets = val;
else if (strcmp(line, "tx_packets") == 0)
data->tx_packets = val;
else if (strcmp(line, "rx_bytes") == 0)
data->rx_bytes = val;
else if (strcmp(line, "tx_bytes") == 0)
data->tx_bytes = val;
}
fclose(f);
return 0;
#endif /* MADWIFI_BSD */
}
static int
madwifi_sta_clear_stats(void *priv, const u8 *addr)
{
#if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
struct madwifi_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
int ret;
wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
sizeof(mlme));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
MACSTR ")", __func__, MAC2STR(addr));
}
return ret;
#else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
return 0; /* FIX */
#endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
}
static int
madwifi_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
{
/*
* Do nothing; we setup parameters at startup that define the
* contents of the beacon information element.
*/
return 0;
}
static int
madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
int reason_code)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
int ret;
wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
__func__, ether_sprintf(addr), reason_code);
mlme.im_op = IEEE80211_MLME_DEAUTH;
mlme.im_reason = reason_code;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
" reason %d)",
__func__, MAC2STR(addr), reason_code);
}
return ret;
}
static int
madwifi_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
int reason_code)
{
struct madwifi_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
int ret;
wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
__func__, ether_sprintf(addr), reason_code);
mlme.im_op = IEEE80211_MLME_DISASSOC;
mlme.im_reason = reason_code;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
if (ret < 0) {
wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
MACSTR " reason %d)",
__func__, MAC2STR(addr), reason_code);
}
return ret;
}
#ifdef CONFIG_WPS
#ifdef IEEE80211_IOCTL_FILTERFRAME
static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
size_t len)
{
struct madwifi_driver_data *drv = ctx;
const struct ieee80211_mgmt *mgmt;
u16 fc;
union wpa_event_data event;
/* Send Probe Request information to WPS processing */
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
return;
mgmt = (const struct ieee80211_mgmt *) buf;
fc = le_to_host16(mgmt->frame_control);
if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
return;
os_memset(&event, 0, sizeof(event));
event.rx_probe_req.sa = mgmt->sa;
event.rx_probe_req.ie = mgmt->u.probe_req.variable;
event.rx_probe_req.ie_len =
len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
wpa_supplicant_event(drv->hapd, EVENT_RX_PROBE_REQ, &event);
}
#endif /* IEEE80211_IOCTL_FILTERFRAME */
#endif /* CONFIG_WPS */
static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
{
int ret = 0;
#ifdef CONFIG_WPS
#ifdef IEEE80211_IOCTL_FILTERFRAME
struct ieee80211req_set_filter filt;
wpa_printf(MSG_DEBUG, "%s Enter", __func__);
filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
sizeof(struct ieee80211req_set_filter));
if (ret)
return ret;
drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
madwifi_raw_receive, drv, 1);
if (drv->sock_raw == NULL)
return -1;
#endif /* IEEE80211_IOCTL_FILTERFRAME */
#endif /* CONFIG_WPS */
return ret;
}
#ifdef CONFIG_WPS
static int
madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
{
struct madwifi_driver_data *drv = priv;
u8 buf[256];
struct ieee80211req_getset_appiebuf *beac_ie;
wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
(unsigned long) len);
beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
beac_ie->app_frmtype = frametype;
beac_ie->app_buflen = len;
memcpy(&(beac_ie->app_buf[0]), ie, len);
return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
sizeof(struct ieee80211req_getset_appiebuf) + len);
}
static int
madwifi_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
const struct wpabuf *proberesp,
const struct wpabuf *assocresp)
{
if (madwifi_set_wps_ie(priv, beacon ? wpabuf_head(beacon) : NULL,
beacon ? wpabuf_len(beacon) : 0,
IEEE80211_APPIE_FRAME_BEACON) < 0)
return -1;
return madwifi_set_wps_ie(priv,
proberesp ? wpabuf_head(proberesp) : NULL,
proberesp ? wpabuf_len(proberesp) : 0,
IEEE80211_APPIE_FRAME_PROBE_RESP);
}
#else /* CONFIG_WPS */
#define madwifi_set_ap_wps_ie NULL
#endif /* CONFIG_WPS */
static void
madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
{
struct hostapd_data *hapd = drv->hapd;
struct ieee80211req_wpaie ie;
int ielen = 0;
u8 *iebuf = NULL;
/*
* Fetch negotiated WPA/RSN parameters from the system.
*/
memset(&ie, 0, sizeof(ie));
memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
__func__);
goto no_ie;
}
wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
ie.wpa_ie, IEEE80211_MAX_OPT_IE);
iebuf = ie.wpa_ie;
/* madwifi seems to return some random data if WPA/RSN IE is not set.
* Assume the IE was not included if the IE type is unknown. */
if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
iebuf[1] = 0;
#ifdef MADWIFI_NG
wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
ie.rsn_ie, IEEE80211_MAX_OPT_IE);
if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
/* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
* set. This is needed for WPA2. */
iebuf = ie.rsn_ie;
if (iebuf[0] != WLAN_EID_RSN)
iebuf[1] = 0;
}
#endif /* MADWIFI_NG */
ielen = iebuf[1];
if (ielen == 0)
iebuf = NULL;
else
ielen += 2;
no_ie:
drv_event_assoc(hapd, addr, iebuf, ielen);
if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
/* Cached accounting data is not valid anymore. */
memset(drv->acct_mac, 0, ETH_ALEN);
memset(&drv->acct_data, 0, sizeof(drv->acct_data));
}
}
static void
madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
char *custom)
{
wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
char *pos;
u8 addr[ETH_ALEN];
pos = strstr(custom, "addr=");
if (pos == NULL) {
wpa_printf(MSG_DEBUG,
"MLME-MICHAELMICFAILURE.indication "
"without sender address ignored");
return;
}
pos += 5;
if (hwaddr_aton(pos, addr) == 0) {
union wpa_event_data data;
os_memset(&data, 0, sizeof(data));
data.michael_mic_failure.unicast = 1;
data.michael_mic_failure.src = addr;
wpa_supplicant_event(drv->hapd,
EVENT_MICHAEL_MIC_FAILURE, &data);
} else {
wpa_printf(MSG_DEBUG,
"MLME-MICHAELMICFAILURE.indication "
"with invalid MAC address");
}
} else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
char *key, *value;
u32 val;
key = custom;
while ((key = strchr(key, '\n')) != NULL) {
key++;
value = strchr(key, '=');
if (value == NULL)
continue;
*value++ = '\0';
val = strtoul(value, NULL, 10);
if (strcmp(key, "mac") == 0)
hwaddr_aton(value, drv->acct_mac);
else if (strcmp(key, "rx_packets") == 0)
drv->acct_data.rx_packets = val;
else if (strcmp(key, "tx_packets") == 0)
drv->acct_data.tx_packets = val;
else if (strcmp(key, "rx_bytes") == 0)
drv->acct_data.rx_bytes = val;
else if (strcmp(key, "tx_bytes") == 0)
drv->acct_data.tx_bytes = val;
key = value;
}
}
}
static void
madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
char *data, int len)
{
struct iw_event iwe_buf, *iwe = &iwe_buf;
char *pos, *end, *custom, *buf;
pos = data;
end = data + len;
while (pos + IW_EV_LCP_LEN <= end) {
/* Event data may be unaligned, so make a local, aligned copy
* before processing. */
memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
iwe->cmd, iwe->len);
if (iwe->len <= IW_EV_LCP_LEN)
return;
custom = pos + IW_EV_POINT_LEN;
if (drv->we_version > 18 &&
(iwe->cmd == IWEVMICHAELMICFAILURE ||
iwe->cmd == IWEVCUSTOM)) {
/* WE-19 removed the pointer from struct iw_point */
char *dpos = (char *) &iwe_buf.u.data.length;
int dlen = dpos - (char *) &iwe_buf;
memcpy(dpos, pos + IW_EV_LCP_LEN,
sizeof(struct iw_event) - dlen);
} else {
memcpy(&iwe_buf, pos, sizeof(struct iw_event));
custom += IW_EV_POINT_OFF;
}
switch (iwe->cmd) {
case IWEVEXPIRED:
drv_event_disassoc(drv->hapd,
(u8 *) iwe->u.addr.sa_data);
break;
case IWEVREGISTERED:
madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
break;
case IWEVCUSTOM:
if (custom + iwe->u.data.length > end)
return;
buf = malloc(iwe->u.data.length + 1);
if (buf == NULL)
return; /* XXX */
memcpy(buf, custom, iwe->u.data.length);
buf[iwe->u.data.length] = '\0';
madwifi_wireless_event_wireless_custom(drv, buf);
free(buf);
break;
}
pos += iwe->len;
}
}
static void
madwifi_wireless_event_rtm_newlink(void *ctx, struct ifinfomsg *ifi,
u8 *buf, size_t len)
{
struct madwifi_driver_data *drv = ctx;
int attrlen, rta_len;
struct rtattr *attr;
if (ifi->ifi_index != drv->ifindex)
return;
attrlen = len;
attr = (struct rtattr *) buf;
rta_len = RTA_ALIGN(sizeof(struct rtattr));
while (RTA_OK(attr, attrlen)) {
if (attr->rta_type == IFLA_WIRELESS) {
madwifi_wireless_event_wireless(
drv, ((char *) attr) + rta_len,
attr->rta_len - rta_len);
}
attr = RTA_NEXT(attr, attrlen);
}
}
static int
madwifi_get_we_version(struct madwifi_driver_data *drv)
{
struct iw_range *range;
struct iwreq iwr;
int minlen;
size_t buflen;
drv->we_version = 0;
/*
* Use larger buffer than struct iw_range in order to allow the
* structure to grow in the future.
*/
buflen = sizeof(struct iw_range) + 500;
range = os_zalloc(buflen);
if (range == NULL)
return -1;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.data.pointer = (caddr_t) range;
iwr.u.data.length = buflen;
minlen = ((char *) &range->enc_capa) - (char *) range +
sizeof(range->enc_capa);
if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
perror("ioctl[SIOCGIWRANGE]");
free(range);
return -1;
} else if (iwr.u.data.length >= minlen &&
range->we_version_compiled >= 18) {
wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
"WE(source)=%d enc_capa=0x%x",
range->we_version_compiled,
range->we_version_source,
range->enc_capa);
drv->we_version = range->we_version_compiled;
}
free(range);
return 0;
}
static int
madwifi_wireless_event_init(struct madwifi_driver_data *drv)
{
struct netlink_config *cfg;
madwifi_get_we_version(drv);
cfg = os_zalloc(sizeof(*cfg));
if (cfg == NULL)
return -1;
cfg->ctx = drv;
cfg->newlink_cb = madwifi_wireless_event_rtm_newlink;
drv->netlink = netlink_init(cfg);
if (drv->netlink == NULL) {
os_free(cfg);
return -1;
}
return 0;
}
static int
madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
int encrypt, const u8 *own_addr)
{
struct madwifi_driver_data *drv = priv;
unsigned char buf[3000];
unsigned char *bp = buf;
struct l2_ethhdr *eth;
size_t len;
int status;
/*
* Prepend the Ethernet header. If the caller left us
* space at the front we could just insert it but since
* we don't know we copy to a local buffer. Given the frequency
* and size of frames this probably doesn't matter.
*/
len = data_len + sizeof(struct l2_ethhdr);
if (len > sizeof(buf)) {
bp = malloc(len);
if (bp == NULL) {
printf("EAPOL frame discarded, cannot malloc temp "
"buffer of size %lu!\n", (unsigned long) len);
return -1;
}
}
eth = (struct l2_ethhdr *) bp;
memcpy(eth->h_dest, addr, ETH_ALEN);
memcpy(eth->h_source, own_addr, ETH_ALEN);
eth->h_proto = host_to_be16(ETH_P_EAPOL);
memcpy(eth+1, data, data_len);
wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
if (bp != buf)
free(bp);
return status;
}
static void
handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
{
struct madwifi_driver_data *drv = ctx;
drv_event_eapol_rx(drv->hapd, src_addr, buf + sizeof(struct l2_ethhdr),
len - sizeof(struct l2_ethhdr));
}
static void *
madwifi_init(struct hostapd_data *hapd, struct wpa_init_params *params)
{
struct madwifi_driver_data *drv;
struct ifreq ifr;
struct iwreq iwr;
char brname[IFNAMSIZ];
drv = os_zalloc(sizeof(struct madwifi_driver_data));
if (drv == NULL) {
printf("Could not allocate memory for madwifi driver data\n");
return NULL;
}
drv->hapd = hapd;
drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
if (drv->ioctl_sock < 0) {
perror("socket[PF_INET,SOCK_DGRAM]");
goto bad;
}
memcpy(drv->iface, params->ifname, sizeof(drv->iface));
memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
perror("ioctl(SIOCGIFINDEX)");
goto bad;
}
drv->ifindex = ifr.ifr_ifindex;
drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
handle_read, drv, 1);
if (drv->sock_xmit == NULL)
goto bad;
if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
goto bad;
if (params->bridge[0]) {
wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
params->bridge[0]);
drv->sock_recv = l2_packet_init(params->bridge[0], NULL,
ETH_P_EAPOL, handle_read, drv,
1);
if (drv->sock_recv == NULL)
goto bad;
} else if (linux_br_get(brname, drv->iface) == 0) {
wpa_printf(MSG_DEBUG, "Interface in bridge %s; configure for "
"EAPOL receive", brname);
drv->sock_recv = l2_packet_init(brname, NULL, ETH_P_EAPOL,
handle_read, drv, 1);
if (drv->sock_recv == NULL)
goto bad;
} else
drv->sock_recv = drv->sock_xmit;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.mode = IW_MODE_MASTER;
if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
perror("ioctl[SIOCSIWMODE]");
printf("Could not set interface to master mode!\n");
goto bad;
}
/* mark down during setup */
linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
madwifi_set_privacy(drv, 0); /* default to no privacy */
madwifi_receive_probe_req(drv);
if (madwifi_wireless_event_init(drv))
goto bad;
return drv;
bad:
if (drv->sock_xmit != NULL)
l2_packet_deinit(drv->sock_xmit);
if (drv->ioctl_sock >= 0)
close(drv->ioctl_sock);
if (drv != NULL)
free(drv);
return NULL;
}
static void
madwifi_deinit(void *priv)
{
struct madwifi_driver_data *drv = priv;
netlink_deinit(drv->netlink);
(void) linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
if (drv->ioctl_sock >= 0)
close(drv->ioctl_sock);
if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
l2_packet_deinit(drv->sock_recv);
if (drv->sock_xmit != NULL)
l2_packet_deinit(drv->sock_xmit);
if (drv->sock_raw)
l2_packet_deinit(drv->sock_raw);
free(drv);
}
static int
madwifi_set_ssid(void *priv, const u8 *buf, int len)
{
struct madwifi_driver_data *drv = priv;
struct iwreq iwr;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.essid.flags = 1; /* SSID active */
iwr.u.essid.pointer = (caddr_t) buf;
iwr.u.essid.length = len + 1;
if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
perror("ioctl[SIOCSIWESSID]");
printf("len=%d\n", len);
return -1;
}
return 0;
}
static int
madwifi_get_ssid(void *priv, u8 *buf, int len)
{
struct madwifi_driver_data *drv = priv;
struct iwreq iwr;
int ret = 0;
memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
iwr.u.essid.pointer = (caddr_t) buf;
iwr.u.essid.length = len;
if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
perror("ioctl[SIOCGIWESSID]");
ret = -1;
} else
ret = iwr.u.essid.length;
return ret;
}
static int
madwifi_set_countermeasures(void *priv, int enabled)
{
struct madwifi_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
}
static int
madwifi_commit(void *priv)
{
struct madwifi_driver_data *drv = priv;
return linux_set_iface_flags(drv->ioctl_sock, drv->iface, 1);
}
#else /* HOSTAPD */
struct wpa_driver_madwifi_data {
void *wext; /* private data for driver_wext */
void *ctx;
char ifname[IFNAMSIZ + 1];
int sock;
};
static int wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg);
static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
size_t ies_len);
static int
set80211priv(struct wpa_driver_madwifi_data *drv, int op, void *data, int len,
int show_err)
{
struct iwreq iwr;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
if (len < IFNAMSIZ &&
op != IEEE80211_IOCTL_SET_APPIEBUF) {
/*
* Argument data fits inline; put it there.
*/
os_memcpy(iwr.u.name, data, len);
} else {
/*
* Argument data too big for inline transfer; setup a
* parameter block instead; the kernel will transfer
* the data for the driver.
*/
iwr.u.data.pointer = data;
iwr.u.data.length = len;
}
if (ioctl(drv->sock, op, &iwr) < 0) {
if (show_err) {
#ifdef MADWIFI_NG
int first = IEEE80211_IOCTL_SETPARAM;
int last = IEEE80211_IOCTL_KICKMAC;
static const char *opnames[] = {
"ioctl[IEEE80211_IOCTL_SETPARAM]",
"ioctl[IEEE80211_IOCTL_GETPARAM]",
"ioctl[IEEE80211_IOCTL_SETMODE]",
"ioctl[IEEE80211_IOCTL_GETMODE]",
"ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
"ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
"ioctl[IEEE80211_IOCTL_SETCHANLIST]",
"ioctl[IEEE80211_IOCTL_GETCHANLIST]",
"ioctl[IEEE80211_IOCTL_CHANSWITCH]",
NULL,
"ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
"ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
NULL,
"ioctl[IEEE80211_IOCTL_GETCHANINFO]",
"ioctl[IEEE80211_IOCTL_SETOPTIE]",
"ioctl[IEEE80211_IOCTL_GETOPTIE]",
"ioctl[IEEE80211_IOCTL_SETMLME]",
NULL,
"ioctl[IEEE80211_IOCTL_SETKEY]",
NULL,
"ioctl[IEEE80211_IOCTL_DELKEY]",
NULL,
"ioctl[IEEE80211_IOCTL_ADDMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_DELMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_WDSMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_WDSDELMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_KICKMAC]",
};
#else /* MADWIFI_NG */
int first = IEEE80211_IOCTL_SETPARAM;
int last = IEEE80211_IOCTL_CHANLIST;
static const char *opnames[] = {
"ioctl[IEEE80211_IOCTL_SETPARAM]",
"ioctl[IEEE80211_IOCTL_GETPARAM]",
"ioctl[IEEE80211_IOCTL_SETKEY]",
"ioctl[IEEE80211_IOCTL_GETKEY]",
"ioctl[IEEE80211_IOCTL_DELKEY]",
NULL,
"ioctl[IEEE80211_IOCTL_SETMLME]",
NULL,
"ioctl[IEEE80211_IOCTL_SETOPTIE]",
"ioctl[IEEE80211_IOCTL_GETOPTIE]",
"ioctl[IEEE80211_IOCTL_ADDMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_DELMAC]",
NULL,
"ioctl[IEEE80211_IOCTL_CHANLIST]",
};
#endif /* MADWIFI_NG */
int idx = op - first;
if (first <= op && op <= last &&
idx < (int) (sizeof(opnames) / sizeof(opnames[0]))
&& opnames[idx])
perror(opnames[idx]);
else
perror("ioctl[unknown???]");
}
return -1;
}
return 0;
}
static int
set80211param(struct wpa_driver_madwifi_data *drv, int op, int arg,
int show_err)
{
struct iwreq iwr;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
iwr.u.mode = op;
os_memcpy(iwr.u.name+sizeof(u32), &arg, sizeof(arg));
if (ioctl(drv->sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
if (show_err)
perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
return -1;
}
return 0;
}
static int
wpa_driver_madwifi_set_wpa_ie(struct wpa_driver_madwifi_data *drv,
const u8 *wpa_ie, size_t wpa_ie_len)
{
struct iwreq iwr;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
/* NB: SETOPTIE is not fixed-size so must not be inlined */
iwr.u.data.pointer = (void *) wpa_ie;
iwr.u.data.length = wpa_ie_len;
if (ioctl(drv->sock, IEEE80211_IOCTL_SETOPTIE, &iwr) < 0) {
perror("ioctl[IEEE80211_IOCTL_SETOPTIE]");
return -1;
}
return 0;
}
static int
wpa_driver_madwifi_del_key(struct wpa_driver_madwifi_data *drv, int key_idx,
const u8 *addr)
{
struct ieee80211req_del_key wk;
wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __FUNCTION__, key_idx);
os_memset(&wk, 0, sizeof(wk));
wk.idk_keyix = key_idx;
if (addr != NULL)
os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk), 1);
}
static int
wpa_driver_madwifi_set_key(const char *ifname, void *priv, enum wpa_alg alg,
const u8 *addr, int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct wpa_driver_madwifi_data *drv = priv;
struct ieee80211req_key wk;
char *alg_name;
u_int8_t cipher;
if (alg == WPA_ALG_NONE)
return wpa_driver_madwifi_del_key(drv, key_idx, addr);
switch (alg) {
case WPA_ALG_WEP:
if (addr == NULL || os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
ETH_ALEN) == 0) {
/*
* madwifi did not seem to like static WEP key
* configuration with IEEE80211_IOCTL_SETKEY, so use
* Linux wireless extensions ioctl for this.
*/
return wpa_driver_wext_set_key(ifname, drv->wext, alg,
addr, key_idx, set_tx,
seq, seq_len,
key, key_len);
}
alg_name = "WEP";
cipher = IEEE80211_CIPHER_WEP;
break;
case WPA_ALG_TKIP:
alg_name = "TKIP";
cipher = IEEE80211_CIPHER_TKIP;
break;
case WPA_ALG_CCMP:
alg_name = "CCMP";
cipher = IEEE80211_CIPHER_AES_CCM;
break;
default:
wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
__FUNCTION__, alg);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
"key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
(unsigned long) seq_len, (unsigned long) key_len);
if (seq_len > sizeof(u_int64_t)) {
wpa_printf(MSG_DEBUG, "%s: seq_len %lu too big",
__FUNCTION__, (unsigned long) seq_len);
return -2;
}
if (key_len > sizeof(wk.ik_keydata)) {
wpa_printf(MSG_DEBUG, "%s: key length %lu too big",
__FUNCTION__, (unsigned long) key_len);
return -3;
}
os_memset(&wk, 0, sizeof(wk));
wk.ik_type = cipher;
wk.ik_flags = IEEE80211_KEY_RECV;
if (addr == NULL ||
os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
wk.ik_flags |= IEEE80211_KEY_GROUP;
if (set_tx) {
wk.ik_flags |= IEEE80211_KEY_XMIT | IEEE80211_KEY_DEFAULT;
os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
} else
os_memset(wk.ik_macaddr, 0, IEEE80211_ADDR_LEN);
wk.ik_keyix = key_idx;
wk.ik_keylen = key_len;
#ifdef WORDS_BIGENDIAN
#define WPA_KEY_RSC_LEN 8
{
size_t i;
u8 tmp[WPA_KEY_RSC_LEN];
os_memset(tmp, 0, sizeof(tmp));
for (i = 0; i < seq_len; i++)
tmp[WPA_KEY_RSC_LEN - i - 1] = seq[i];
os_memcpy(&wk.ik_keyrsc, tmp, WPA_KEY_RSC_LEN);
}
#else /* WORDS_BIGENDIAN */
os_memcpy(&wk.ik_keyrsc, seq, seq_len);
#endif /* WORDS_BIGENDIAN */
os_memcpy(wk.ik_keydata, key, key_len);
return set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk), 1);
}
static int
wpa_driver_madwifi_set_countermeasures(void *priv, int enabled)
{
struct wpa_driver_madwifi_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled, 1);
}
static int
wpa_driver_madwifi_deauthenticate(void *priv, const u8 *addr, int reason_code)
{
struct wpa_driver_madwifi_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
mlme.im_op = IEEE80211_MLME_DEAUTH;
mlme.im_reason = reason_code;
os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
}
static int
wpa_driver_madwifi_disassociate(void *priv, const u8 *addr, int reason_code)
{
struct wpa_driver_madwifi_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
mlme.im_op = IEEE80211_MLME_DISASSOC;
mlme.im_reason = reason_code;
os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
}
static int
wpa_driver_madwifi_associate(void *priv,
struct wpa_driver_associate_params *params)
{
struct wpa_driver_madwifi_data *drv = priv;
struct ieee80211req_mlme mlme;
int ret = 0, privacy = 1;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
if (set80211param(drv, IEEE80211_PARAM_DROPUNENCRYPTED,
params->drop_unencrypted, 1) < 0)
ret = -1;
if (wpa_driver_madwifi_set_auth_alg(drv, params->auth_alg) < 0)
ret = -1;
/*
* NB: Don't need to set the freq or cipher-related state as
* this is implied by the bssid which is used to locate
* the scanned node state which holds it. The ssid is
* needed to disambiguate an AP that broadcasts multiple
* ssid's but uses the same bssid.
*/
/* XXX error handling is wrong but unclear what to do... */
if (wpa_driver_madwifi_set_wpa_ie(drv, params->wpa_ie,
params->wpa_ie_len) < 0)
ret = -1;
if (params->pairwise_suite == CIPHER_NONE &&
params->group_suite == CIPHER_NONE &&
params->key_mgmt_suite == KEY_MGMT_NONE &&
params->wpa_ie_len == 0)
privacy = 0;
if (set80211param(drv, IEEE80211_PARAM_PRIVACY, privacy, 1) < 0)
ret = -1;
if (params->wpa_ie_len &&
set80211param(drv, IEEE80211_PARAM_WPA,
params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1, 1) < 0)
ret = -1;
if (params->bssid == NULL) {
/* ap_scan=2 mode - driver takes care of AP selection and
* roaming */
/* FIX: this does not seem to work; would probably need to
* change something in the driver */
if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0)
ret = -1;
if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
params->ssid_len) < 0)
ret = -1;
} else {
if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0)
ret = -1;
if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
params->ssid_len) < 0)
ret = -1;
os_memset(&mlme, 0, sizeof(mlme));
mlme.im_op = IEEE80211_MLME_ASSOC;
os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
if (set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
sizeof(mlme), 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: SETMLME[ASSOC] failed",
__func__);
ret = -1;
}
}
return ret;
}
static int
wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg)
{
struct wpa_driver_madwifi_data *drv = priv;
int authmode;
if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
(auth_alg & WPA_AUTH_ALG_SHARED))
authmode = IEEE80211_AUTH_AUTO;
else if (auth_alg & WPA_AUTH_ALG_SHARED)
authmode = IEEE80211_AUTH_SHARED;
else
authmode = IEEE80211_AUTH_OPEN;
return set80211param(drv, IEEE80211_PARAM_AUTHMODE, authmode, 1);
}
static int
wpa_driver_madwifi_scan(void *priv, struct wpa_driver_scan_params *params)
{
struct wpa_driver_madwifi_data *drv = priv;
struct iwreq iwr;
int ret = 0;
const u8 *ssid = params->ssids[0].ssid;
size_t ssid_len = params->ssids[0].ssid_len;
wpa_driver_madwifi_set_probe_req_ie(drv, params->extra_ies,
params->extra_ies_len);
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
/* set desired ssid before scan */
/* FIX: scan should not break the current association, so using
* set_ssid may not be the best way of doing this.. */
if (wpa_driver_wext_set_ssid(drv->wext, ssid, ssid_len) < 0)
ret = -1;
if (ioctl(drv->sock, SIOCSIWSCAN, &iwr) < 0) {
perror("ioctl[SIOCSIWSCAN]");
ret = -1;
}
/*
* madwifi delivers a scan complete event so no need to poll, but
* register a backup timeout anyway to make sure that we recover even
* if the driver does not send this event for any reason. This timeout
* will only be used if the event is not delivered (event handler will
* cancel the timeout).
*/
eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
drv->ctx);
eloop_register_timeout(30, 0, wpa_driver_wext_scan_timeout, drv->wext,
drv->ctx);
return ret;
}
static int wpa_driver_madwifi_get_bssid(void *priv, u8 *bssid)
{
struct wpa_driver_madwifi_data *drv = priv;
return wpa_driver_wext_get_bssid(drv->wext, bssid);
}
static int wpa_driver_madwifi_get_ssid(void *priv, u8 *ssid)
{
struct wpa_driver_madwifi_data *drv = priv;
return wpa_driver_wext_get_ssid(drv->wext, ssid);
}
static struct wpa_scan_results *
wpa_driver_madwifi_get_scan_results(void *priv)
{
struct wpa_driver_madwifi_data *drv = priv;
return wpa_driver_wext_get_scan_results(drv->wext);
}
static int wpa_driver_madwifi_set_operstate(void *priv, int state)
{
struct wpa_driver_madwifi_data *drv = priv;
return wpa_driver_wext_set_operstate(drv->wext, state);
}
static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
size_t ies_len)
{
struct ieee80211req_getset_appiebuf *probe_req_ie;
int ret;
probe_req_ie = os_malloc(sizeof(*probe_req_ie) + ies_len);
if (probe_req_ie == NULL)
return -1;
probe_req_ie->app_frmtype = IEEE80211_APPIE_FRAME_PROBE_REQ;
probe_req_ie->app_buflen = ies_len;
os_memcpy(probe_req_ie->app_buf, ies, ies_len);
ret = set80211priv(priv, IEEE80211_IOCTL_SET_APPIEBUF, probe_req_ie,
sizeof(struct ieee80211req_getset_appiebuf) +
ies_len, 1);
os_free(probe_req_ie);
return ret;
}
static void * wpa_driver_madwifi_init(void *ctx, const char *ifname)
{
struct wpa_driver_madwifi_data *drv;
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
return NULL;
drv->wext = wpa_driver_wext_init(ctx, ifname);
if (drv->wext == NULL)
goto fail;
drv->ctx = ctx;
os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
if (drv->sock < 0)
goto fail2;
if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
"roaming", __FUNCTION__);
goto fail3;
}
if (set80211param(drv, IEEE80211_PARAM_WPA, 3, 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support",
__FUNCTION__);
goto fail3;
}
return drv;
fail3:
close(drv->sock);
fail2:
wpa_driver_wext_deinit(drv->wext);
fail:
os_free(drv);
return NULL;
}
static void wpa_driver_madwifi_deinit(void *priv)
{
struct wpa_driver_madwifi_data *drv = priv;
if (wpa_driver_madwifi_set_wpa_ie(drv, NULL, 0) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to clear WPA IE",
__FUNCTION__);
}
if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to enable driver-based "
"roaming", __FUNCTION__);
}
if (set80211param(drv, IEEE80211_PARAM_PRIVACY, 0, 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to disable forced Privacy "
"flag", __FUNCTION__);
}
if (set80211param(drv, IEEE80211_PARAM_WPA, 0, 1) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to disable WPA",
__FUNCTION__);
}
wpa_driver_wext_deinit(drv->wext);
close(drv->sock);
os_free(drv);
}
#endif /* HOSTAPD */
const struct wpa_driver_ops wpa_driver_madwifi_ops = {
.name = "madwifi",
.desc = "MADWIFI 802.11 support (Atheros, etc.)",
.set_key = wpa_driver_madwifi_set_key,
#ifdef HOSTAPD
.hapd_init = madwifi_init,
.hapd_deinit = madwifi_deinit,
.set_ieee8021x = madwifi_set_ieee8021x,
.set_privacy = madwifi_set_privacy,
.get_seqnum = madwifi_get_seqnum,
.flush = madwifi_flush,
.set_generic_elem = madwifi_set_opt_ie,
.sta_set_flags = madwifi_sta_set_flags,
.read_sta_data = madwifi_read_sta_driver_data,
.hapd_send_eapol = madwifi_send_eapol,
.sta_disassoc = madwifi_sta_disassoc,
.sta_deauth = madwifi_sta_deauth,
.hapd_set_ssid = madwifi_set_ssid,
.hapd_get_ssid = madwifi_get_ssid,
.hapd_set_countermeasures = madwifi_set_countermeasures,
.sta_clear_stats = madwifi_sta_clear_stats,
.commit = madwifi_commit,
.set_ap_wps_ie = madwifi_set_ap_wps_ie,
#else /* HOSTAPD */
.get_bssid = wpa_driver_madwifi_get_bssid,
.get_ssid = wpa_driver_madwifi_get_ssid,
.init = wpa_driver_madwifi_init,
.deinit = wpa_driver_madwifi_deinit,
.set_countermeasures = wpa_driver_madwifi_set_countermeasures,
.scan2 = wpa_driver_madwifi_scan,
.get_scan_results2 = wpa_driver_madwifi_get_scan_results,
.deauthenticate = wpa_driver_madwifi_deauthenticate,
.disassociate = wpa_driver_madwifi_disassociate,
.associate = wpa_driver_madwifi_associate,
.set_operstate = wpa_driver_madwifi_set_operstate,
#endif /* HOSTAPD */
};
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