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/*
* WPA Supplicant - driver interaction with Linux ndiswrapper
* Copyright (c) 2004-2006, Giridhar Pemmasani <giri@lmc.cs.sunysb.edu>
* Copyright (c) 2004-2006, 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 <sys/ioctl.h>
#include <net/if_arp.h>
#include "wireless_copy.h"
#include "common.h"
#include "driver.h"
#include "l2_packet.h"
#include "eloop.h"
#include "priv_netlink.h"
#include "driver_wext.h"
struct wpa_driver_ndiswrapper_data {
void *wext; /* private data for driver_wext */
void *ctx;
char ifname[IFNAMSIZ + 1];
int sock;
};
struct wpa_key
{
wpa_alg alg;
const u8 *addr;
int key_index;
int set_tx;
const u8 *seq;
size_t seq_len;
const u8 *key;
size_t key_len;
};
struct wpa_assoc_info
{
const u8 *bssid;
const u8 *ssid;
size_t ssid_len;
int freq;
const u8 *wpa_ie;
size_t wpa_ie_len;
wpa_cipher pairwise_suite;
wpa_cipher group_suite;
wpa_key_mgmt key_mgmt_suite;
int auth_alg;
int mode;
};
#define PRIV_RESET SIOCIWFIRSTPRIV+0
#define WPA_SET_WPA SIOCIWFIRSTPRIV+1
#define WPA_SET_KEY SIOCIWFIRSTPRIV+2
#define WPA_ASSOCIATE SIOCIWFIRSTPRIV+3
#define WPA_DISASSOCIATE SIOCIWFIRSTPRIV+4
#define WPA_DROP_UNENCRYPTED SIOCIWFIRSTPRIV+5
#define WPA_SET_COUNTERMEASURES SIOCIWFIRSTPRIV+6
#define WPA_DEAUTHENTICATE SIOCIWFIRSTPRIV+7
#define WPA_SET_AUTH_ALG SIOCIWFIRSTPRIV+8
#define WPA_INIT SIOCIWFIRSTPRIV+9
#define WPA_DEINIT SIOCIWFIRSTPRIV+10
#define WPA_GET_CAPA SIOCIWFIRSTPRIV+11
static int get_socket(void)
{
static const int families[] = {
AF_INET, AF_IPX, AF_AX25, AF_APPLETALK
};
unsigned int i;
int sock;
for (i = 0; i < sizeof(families) / sizeof(int); ++i) {
sock = socket(families[i], SOCK_DGRAM, 0);
if (sock >= 0)
return sock;
}
return -1;
}
static int iw_set_ext(struct wpa_driver_ndiswrapper_data *drv, int request,
struct iwreq *pwrq)
{
os_strncpy(pwrq->ifr_name, drv->ifname, IFNAMSIZ);
return ioctl(drv->sock, request, pwrq);
}
static int wpa_ndiswrapper_set_wpa(void *priv, int enabled)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
struct iwreq priv_req;
int ret = 0;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.data.flags = enabled;
if (iw_set_ext(drv, WPA_SET_WPA, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_set_key(void *priv, 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_ndiswrapper_data *drv = priv;
struct wpa_key wpa_key;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
wpa_key.alg = alg;
wpa_key.addr = addr;
wpa_key.key_index = key_idx;
wpa_key.set_tx = set_tx;
wpa_key.seq = seq;
wpa_key.seq_len = seq_len;
wpa_key.key = key;
wpa_key.key_len = key_len;
priv_req.u.data.pointer = (void *)&wpa_key;
priv_req.u.data.length = sizeof(wpa_key);
if (iw_set_ext(drv, WPA_SET_KEY, &priv_req) < 0)
ret = -1;
if (alg == WPA_ALG_NONE) {
/*
* ndiswrapper did not seem to be clearing keys properly in
* some cases with WPA_SET_KEY. For example, roaming from WPA
* enabled AP to plaintext one seemed to fail since the driver
* did not associate. Try to make sure the keys are cleared so
* that plaintext APs can be used in all cases.
*/
wpa_driver_wext_set_key(drv->wext, alg, addr, key_idx, set_tx,
seq, seq_len, key, key_len);
}
return ret;
}
static int wpa_ndiswrapper_set_countermeasures(void *priv, int enabled)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.param.value = enabled;
if (iw_set_ext(drv, WPA_SET_COUNTERMEASURES, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_set_drop_unencrypted(void *priv,
int enabled)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.param.value = enabled;
if (iw_set_ext(drv, WPA_DROP_UNENCRYPTED, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_deauthenticate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.param.value = reason_code;
os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN);
if (iw_set_ext(drv, WPA_DEAUTHENTICATE, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_disassociate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
os_memcpy(&priv_req.u.ap_addr.sa_data, addr, ETH_ALEN);
if (iw_set_ext(drv, WPA_DISASSOCIATE, &priv_req) < 0)
ret = -1;
return ret;
}
static int
wpa_ndiswrapper_associate(void *priv,
struct wpa_driver_associate_params *params)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct wpa_assoc_info wpa_assoc_info;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
os_memset(&wpa_assoc_info, 0, sizeof(wpa_assoc_info));
wpa_assoc_info.bssid = params->bssid;
wpa_assoc_info.ssid = params->ssid;
wpa_assoc_info.ssid_len = params->ssid_len;
wpa_assoc_info.freq = params->freq;
wpa_assoc_info.wpa_ie = params->wpa_ie;
wpa_assoc_info.wpa_ie_len = params->wpa_ie_len;
wpa_assoc_info.pairwise_suite = params->pairwise_suite;
wpa_assoc_info.group_suite = params->group_suite;
wpa_assoc_info.key_mgmt_suite = params->key_mgmt_suite;
wpa_assoc_info.auth_alg = params->auth_alg;
wpa_assoc_info.mode = params->mode;
priv_req.u.data.pointer = (void *)&wpa_assoc_info;
priv_req.u.data.length = sizeof(wpa_assoc_info);
if (iw_set_ext(drv, WPA_ASSOCIATE, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_set_auth_alg(void *priv, int auth_alg)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.param.value = auth_alg;
if (iw_set_ext(drv, WPA_SET_AUTH_ALG, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_get_bssid(void *priv, u8 *bssid)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
return wpa_driver_wext_get_bssid(drv->wext, bssid);
}
static int wpa_ndiswrapper_get_ssid(void *priv, u8 *ssid)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
return wpa_driver_wext_get_ssid(drv->wext, ssid);
}
static int wpa_ndiswrapper_scan(void *priv, const u8 *ssid, size_t ssid_len)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
return wpa_driver_wext_scan(drv->wext, ssid, ssid_len);
}
static int wpa_ndiswrapper_get_scan_results(void *priv,
struct wpa_scan_result *results,
size_t max_size)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
return wpa_driver_wext_get_scan_results(drv->wext, results, max_size);
}
static int wpa_ndiswrapper_get_capa(void *priv, struct wpa_driver_capa *capa)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
int ret = 0;
struct iwreq priv_req;
os_memset(&priv_req, 0, sizeof(priv_req));
priv_req.u.data.pointer = (void *) capa;
priv_req.u.data.length = sizeof(*capa);
if (iw_set_ext(drv, WPA_GET_CAPA, &priv_req) < 0)
ret = -1;
return ret;
}
static int wpa_ndiswrapper_set_operstate(void *priv, int state)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
return wpa_driver_wext_set_operstate(drv->wext, state);
}
static void * wpa_ndiswrapper_init(void *ctx, const char *ifname)
{
struct wpa_driver_ndiswrapper_data *drv;
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
return NULL;
drv->wext = wpa_driver_wext_init(ctx, ifname);
if (drv->wext == NULL) {
os_free(drv);
return NULL;
}
drv->ctx = ctx;
os_strncpy(drv->ifname, ifname, sizeof(drv->ifname));
drv->sock = get_socket();
if (drv->sock < 0) {
wpa_driver_wext_deinit(drv->wext);
os_free(drv);
return NULL;
}
return drv;
}
static void wpa_ndiswrapper_deinit(void *priv)
{
struct wpa_driver_ndiswrapper_data *drv = priv;
wpa_driver_wext_deinit(drv->wext);
close(drv->sock);
os_free(drv);
}
const struct wpa_driver_ops wpa_driver_ndiswrapper_ops = {
.name = "ndiswrapper",
.desc = "Linux ndiswrapper",
.set_wpa = wpa_ndiswrapper_set_wpa,
.set_key = wpa_ndiswrapper_set_key,
.set_countermeasures = wpa_ndiswrapper_set_countermeasures,
.set_drop_unencrypted = wpa_ndiswrapper_set_drop_unencrypted,
.deauthenticate = wpa_ndiswrapper_deauthenticate,
.disassociate = wpa_ndiswrapper_disassociate,
.associate = wpa_ndiswrapper_associate,
.set_auth_alg = wpa_ndiswrapper_set_auth_alg,
.get_bssid = wpa_ndiswrapper_get_bssid,
.get_ssid = wpa_ndiswrapper_get_ssid,
.scan = wpa_ndiswrapper_scan,
.get_scan_results = wpa_ndiswrapper_get_scan_results,
.init = wpa_ndiswrapper_init,
.deinit = wpa_ndiswrapper_deinit,
.get_capa = wpa_ndiswrapper_get_capa,
.set_operstate = wpa_ndiswrapper_set_operstate,
};
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