603100a109
fix segfaults on amd64 Approved by: re (scottl)
790 lines
21 KiB
C
790 lines
21 KiB
C
/*
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* WPA Supplicant - driver interaction with BSD net80211 layer
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* Copyright (c) 2004, Sam Leffler <sam@errno.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*
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* $FreeBSD$
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include "common.h"
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#include "driver.h"
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#include "eloop.h"
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#include "wpa_supplicant.h"
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#include "l2_packet.h"
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#include "wpa.h" /* XXX for RSN_INFO_ELEM */
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <net80211/ieee80211.h>
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#include <net80211/ieee80211_crypto.h>
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#include <net80211/ieee80211_ioctl.h>
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struct wpa_driver_bsd_data {
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int sock; /* open socket for 802.11 ioctls */
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int route; /* routing socket for events */
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char ifname[IFNAMSIZ+1]; /* interface name */
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unsigned int ifindex; /* interface index */
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void *ctx;
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int prev_roaming; /* roaming state to restore on deinit */
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int prev_privacy; /* privacy state to restore on deinit */
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int prev_wpa; /* wpa state to restore on deinit */
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};
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static int
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set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
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{
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struct ieee80211req ireq;
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memset(&ireq, 0, sizeof(ireq));
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strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
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ireq.i_type = op;
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ireq.i_len = arg_len;
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ireq.i_data = (void *) arg;
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if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
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fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
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op, arg_len, strerror(errno));
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return -1;
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}
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return 0;
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}
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static int
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get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
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{
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struct ieee80211req ireq;
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memset(&ireq, 0, sizeof(ireq));
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strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
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ireq.i_type = op;
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ireq.i_len = arg_len;
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ireq.i_data = arg;
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if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
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perror("ioctl[SIOCG80211]");
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return -1;
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}
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return ireq.i_len;
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}
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static int
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set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
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{
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struct ieee80211req ireq;
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memset(&ireq, 0, sizeof(ireq));
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strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
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ireq.i_type = op;
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ireq.i_val = arg;
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if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
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perror("ioctl[SIOCS80211]");
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fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
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op, arg, strerror(errno));
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return -1;
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}
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return 0;
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}
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static int
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get80211param(struct wpa_driver_bsd_data *drv, int op)
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{
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struct ieee80211req ireq;
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memset(&ireq, 0, sizeof(ireq));
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strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
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ireq.i_type = op;
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if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
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perror("ioctl[SIOCG80211]");
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fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
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op, strerror(errno));
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return -1;
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}
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return ireq.i_val;
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}
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static int
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getifflags(struct wpa_driver_bsd_data *drv, int *flags)
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{
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struct ifreq ifr;
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
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if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
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perror("SIOCGIFFLAGS");
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return errno;
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}
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*flags = ifr.ifr_flags & 0xffff;
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return 0;
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}
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static int
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setifflags(struct wpa_driver_bsd_data *drv, int flags)
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{
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struct ifreq ifr;
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
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ifr.ifr_flags = flags & 0xffff;
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if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
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perror("SIOCSIFFLAGS");
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return errno;
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}
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return 0;
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}
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static int
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wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
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{
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struct wpa_driver_bsd_data *drv = priv;
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return get80211var(drv, IEEE80211_IOC_BSSID,
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bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
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}
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#if 0
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static int
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wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
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{
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struct wpa_driver_bsd_data *drv = priv;
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return set80211var(drv, IEEE80211_IOC_BSSID,
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bssid, IEEE80211_ADDR_LEN);
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}
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#endif
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static int
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wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
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{
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struct wpa_driver_bsd_data *drv = priv;
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return get80211var(drv, IEEE80211_IOC_SSID,
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ssid, IEEE80211_NWID_LEN);
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}
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static int
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wpa_driver_bsd_set_ssid(void *priv, const char *ssid,
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size_t ssid_len)
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{
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struct wpa_driver_bsd_data *drv = priv;
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return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
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}
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static int
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wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
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const char *wpa_ie, size_t wpa_ie_len)
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{
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return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
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}
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static int
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wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
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{
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struct wpa_driver_bsd_data *drv = priv;
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int ret = 0;
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wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
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__FUNCTION__, wpa, privacy);
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if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
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ret = -1;
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if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
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ret = -1;
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if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
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ret = -1;
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return ret;
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}
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static int
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wpa_driver_bsd_set_wpa(void *priv, int enabled)
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{
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
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return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
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}
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static int
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wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
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const unsigned char *addr)
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{
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struct ieee80211req_del_key wk;
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memset(&wk, 0, sizeof(wk));
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if (addr != NULL &&
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bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
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struct ether_addr ea;
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memcpy(&ea, addr, IEEE80211_ADDR_LEN);
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wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
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__func__, ether_ntoa(&ea), key_idx);
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memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
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wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
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} else {
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wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
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wk.idk_keyix = key_idx;
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}
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return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
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}
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static int
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wpa_driver_bsd_set_key(void *priv, wpa_alg alg,
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const unsigned char *addr, int key_idx, int set_tx,
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const u8 *seq, size_t seq_len,
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const u8 *key, size_t key_len)
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{
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struct wpa_driver_bsd_data *drv = priv;
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struct ieee80211req_key wk;
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struct ether_addr ea;
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char *alg_name;
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u_int8_t cipher;
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if (alg == WPA_ALG_NONE)
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return wpa_driver_bsd_del_key(drv, key_idx, addr);
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switch (alg) {
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case WPA_ALG_WEP:
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alg_name = "WEP";
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cipher = IEEE80211_CIPHER_WEP;
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break;
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case WPA_ALG_TKIP:
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alg_name = "TKIP";
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cipher = IEEE80211_CIPHER_TKIP;
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break;
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case WPA_ALG_CCMP:
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alg_name = "CCMP";
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cipher = IEEE80211_CIPHER_AES_CCM;
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break;
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default:
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wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
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__func__, alg);
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return -1;
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}
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memcpy(&ea, addr, IEEE80211_ADDR_LEN);
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wpa_printf(MSG_DEBUG,
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"%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
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__func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
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seq_len, key_len);
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if (seq_len > sizeof(u_int64_t)) {
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wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
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__func__, seq_len);
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return -2;
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}
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if (key_len > sizeof(wk.ik_keydata)) {
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wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
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__func__, key_len);
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return -3;
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}
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memset(&wk, 0, sizeof(wk));
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wk.ik_type = cipher;
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wk.ik_flags = IEEE80211_KEY_RECV;
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if (set_tx)
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wk.ik_flags |= IEEE80211_KEY_XMIT;
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memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
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/*
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* Deduce whether group/global or unicast key by checking
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* the address (yech). Note also that we can only mark global
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* keys default; doing this for a unicast key is an error.
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*/
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if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
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wk.ik_flags |= IEEE80211_KEY_GROUP;
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wk.ik_keyix = key_idx;
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if (set_tx)
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wk.ik_flags |= IEEE80211_KEY_DEFAULT;
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} else
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wk.ik_keyix = IEEE80211_KEYIX_NONE;
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wk.ik_keylen = key_len;
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memcpy(&wk.ik_keyrsc, seq, seq_len);
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memcpy(wk.ik_keydata, key, key_len);
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return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
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}
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static int
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wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
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{
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struct wpa_driver_bsd_data *drv = priv;
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
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return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
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}
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static int
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wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
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{
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struct wpa_driver_bsd_data *drv = priv;
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
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return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
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}
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static int
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wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
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{
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struct wpa_driver_bsd_data *drv = priv;
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struct ieee80211req_mlme mlme;
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wpa_printf(MSG_DEBUG, "%s", __func__);
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memset(&mlme, 0, sizeof(mlme));
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mlme.im_op = IEEE80211_MLME_DEAUTH;
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mlme.im_reason = reason_code;
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memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
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return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
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}
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static int
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wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
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{
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struct wpa_driver_bsd_data *drv = priv;
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struct ieee80211req_mlme mlme;
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wpa_printf(MSG_DEBUG, "%s", __func__);
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memset(&mlme, 0, sizeof(mlme));
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mlme.im_op = IEEE80211_MLME_DISASSOC;
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mlme.im_reason = reason_code;
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memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
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return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
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}
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static int
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wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
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{
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struct wpa_driver_bsd_data *drv = priv;
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struct ieee80211req_mlme mlme;
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int privacy;
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wpa_printf(MSG_DEBUG,
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"%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
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, __func__
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, params->ssid_len, params->ssid
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, params->wpa_ie_len
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, params->pairwise_suite
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, params->group_suite
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, params->key_mgmt_suite
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);
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/* XXX error handling is wrong but unclear what to do... */
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if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
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return -1;
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privacy = !(params->pairwise_suite == CIPHER_NONE &&
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params->group_suite == CIPHER_NONE &&
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params->key_mgmt_suite == KEY_MGMT_NONE &&
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params->wpa_ie_len == 0);
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wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
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if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
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return -1;
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if (params->wpa_ie_len &&
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set80211param(drv, IEEE80211_IOC_WPA,
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params->wpa_ie[0] == RSN_INFO_ELEM ? 2 : 1) < 0)
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return -1;
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memset(&mlme, 0, sizeof(mlme));
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mlme.im_op = IEEE80211_MLME_ASSOC;
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if (params->ssid != NULL)
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memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
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mlme.im_ssid_len = params->ssid_len;
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if (params->bssid != NULL)
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memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
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if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
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return -1;
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return 0;
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}
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static int
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wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
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{
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struct wpa_driver_bsd_data *drv = priv;
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int authmode;
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if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
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(auth_alg & AUTH_ALG_SHARED_KEY))
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authmode = IEEE80211_AUTH_AUTO;
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else if (auth_alg & AUTH_ALG_SHARED_KEY)
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authmode = IEEE80211_AUTH_SHARED;
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else
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authmode = IEEE80211_AUTH_OPEN;
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return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
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}
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static int
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wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
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{
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struct wpa_driver_bsd_data *drv = priv;
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int flags;
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/* NB: interface must be marked UP to do a scan */
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if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
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return -1;
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/* set desired ssid before scan */
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if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
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return -1;
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/* NB: net80211 delivers a scan complete event so no need to poll */
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return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
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}
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#include <net/route.h>
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#include <net80211/ieee80211_freebsd.h>
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static void
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wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
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{
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struct wpa_driver_bsd_data *drv = sock_ctx;
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char buf[2048];
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struct if_announcemsghdr *ifan;
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struct if_msghdr *ifm;
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struct rt_msghdr *rtm;
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union wpa_event_data event;
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struct ieee80211_michael_event *mic;
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int n;
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n = read(sock, buf, sizeof(buf));
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if (n < 0) {
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if (errno != EINTR && errno != EAGAIN)
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perror("read(PF_ROUTE)");
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return;
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}
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rtm = (struct rt_msghdr *) buf;
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if (rtm->rtm_version != RTM_VERSION) {
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wpa_printf(MSG_DEBUG, "Routing message version %d not "
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"understood\n", rtm->rtm_version);
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return;
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}
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memset(&event, 0, sizeof(event));
|
|
switch (rtm->rtm_type) {
|
|
case RTM_IFANNOUNCE:
|
|
ifan = (struct if_announcemsghdr *) rtm;
|
|
if (ifan->ifan_index != drv->ifindex)
|
|
break;
|
|
strlcpy(event.interface_status.ifname, drv->ifname,
|
|
sizeof(event.interface_status.ifname));
|
|
switch (ifan->ifan_what) {
|
|
case IFAN_DEPARTURE:
|
|
event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
|
|
default:
|
|
return;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
|
|
event.interface_status.ifname,
|
|
ifan->ifan_what == IFAN_DEPARTURE ?
|
|
"removed" : "added");
|
|
wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
|
|
break;
|
|
case RTM_IEEE80211:
|
|
ifan = (struct if_announcemsghdr *) rtm;
|
|
if (ifan->ifan_index != drv->ifindex)
|
|
break;
|
|
switch (ifan->ifan_what) {
|
|
case RTM_IEEE80211_ASSOC:
|
|
case RTM_IEEE80211_REASSOC:
|
|
wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
|
|
break;
|
|
case RTM_IEEE80211_DISASSOC:
|
|
wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
|
|
break;
|
|
case RTM_IEEE80211_SCAN:
|
|
wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
|
|
break;
|
|
case RTM_IEEE80211_REPLAY:
|
|
/* ignore */
|
|
break;
|
|
case RTM_IEEE80211_MICHAEL:
|
|
mic = (struct ieee80211_michael_event *) &ifan[1];
|
|
wpa_printf(MSG_DEBUG,
|
|
"Michael MIC failure wireless event: "
|
|
"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
|
|
MAC2STR(mic->iev_src));
|
|
|
|
memset(&event, 0, sizeof(event));
|
|
event.michael_mic_failure.unicast =
|
|
!IEEE80211_IS_MULTICAST(mic->iev_dst);
|
|
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
|
|
&event);
|
|
break;
|
|
}
|
|
break;
|
|
case RTM_IFINFO:
|
|
ifm = (struct if_msghdr *) rtm;
|
|
if (ifm->ifm_index != drv->ifindex)
|
|
break;
|
|
if ((rtm->rtm_flags & RTF_UP) == 0) {
|
|
strlcpy(event.interface_status.ifname, drv->ifname,
|
|
sizeof(event.interface_status.ifname));
|
|
event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
|
|
wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
|
|
event.interface_status.ifname);
|
|
wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Compare function for sorting scan results. Return >0 if @b is consider
|
|
* better. */
|
|
static int
|
|
wpa_scan_result_compar(const void *a, const void *b)
|
|
{
|
|
const struct wpa_scan_result *wa = a;
|
|
const struct wpa_scan_result *wb = b;
|
|
|
|
/* WPA/WPA2 support preferred */
|
|
if ((wb->wpa_ie_len || wb->rsn_ie_len) &&
|
|
!(wa->wpa_ie_len || wa->rsn_ie_len))
|
|
return 1;
|
|
if (!(wb->wpa_ie_len || wb->rsn_ie_len) &&
|
|
(wa->wpa_ie_len || wa->rsn_ie_len))
|
|
return -1;
|
|
|
|
/* privacy support preferred */
|
|
if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) &&
|
|
(wb->caps & IEEE80211_CAPINFO_PRIVACY) == 0)
|
|
return 1;
|
|
if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) == 0 &&
|
|
(wb->caps & IEEE80211_CAPINFO_PRIVACY))
|
|
return -1;
|
|
|
|
/* best/max rate preferred if signal level close enough XXX */
|
|
if (wa->maxrate != wb->maxrate && abs(wb->level - wa->level) < 5)
|
|
return wb->maxrate - wa->maxrate;
|
|
|
|
/* use freq for channel preference */
|
|
|
|
/* all things being equal, use signal level */
|
|
return wb->level - wa->level;
|
|
}
|
|
|
|
static int
|
|
getmaxrate(uint8_t rates[15], uint8_t nrates)
|
|
{
|
|
int i, maxrate = -1;
|
|
|
|
for (i = 0; i < nrates; i++) {
|
|
int rate = rates[i] & IEEE80211_RATE_VAL;
|
|
if (rate > maxrate)
|
|
rate = maxrate;
|
|
}
|
|
return maxrate;
|
|
}
|
|
|
|
/* unalligned little endian access */
|
|
#define LE_READ_4(p) \
|
|
((u_int32_t) \
|
|
((((const u_int8_t *)(p))[0] ) | \
|
|
(((const u_int8_t *)(p))[1] << 8) | \
|
|
(((const u_int8_t *)(p))[2] << 16) | \
|
|
(((const u_int8_t *)(p))[3] << 24)))
|
|
|
|
static int __inline
|
|
iswpaoui(const u_int8_t *frm)
|
|
{
|
|
return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI);
|
|
}
|
|
|
|
static int
|
|
wpa_driver_bsd_get_scan_results(void *priv,
|
|
struct wpa_scan_result *results,
|
|
size_t max_size)
|
|
{
|
|
#define min(a,b) ((a)>(b)?(b):(a))
|
|
struct wpa_driver_bsd_data *drv = priv;
|
|
uint8_t buf[24*1024];
|
|
uint8_t *cp, *vp;
|
|
struct ieee80211req_scan_result *sr;
|
|
struct wpa_scan_result *wsr;
|
|
int len, ielen;
|
|
|
|
memset(results, 0, max_size * sizeof(struct wpa_scan_result));
|
|
|
|
len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, sizeof(buf));
|
|
if (len < 0)
|
|
return -1;
|
|
cp = buf;
|
|
wsr = results;
|
|
while (len >= sizeof(struct ieee80211req_scan_result)) {
|
|
sr = (struct ieee80211req_scan_result *) cp;
|
|
memcpy(wsr->bssid, sr->isr_bssid, IEEE80211_ADDR_LEN);
|
|
wsr->ssid_len = sr->isr_ssid_len;
|
|
wsr->freq = sr->isr_freq;
|
|
wsr->noise = sr->isr_noise;
|
|
wsr->qual = sr->isr_rssi;
|
|
wsr->level = 0; /* XXX? */
|
|
wsr->caps = sr->isr_capinfo;
|
|
wsr->maxrate = getmaxrate(sr->isr_rates, sr->isr_nrates);
|
|
vp = (u_int8_t *)(sr+1);
|
|
memcpy(wsr->ssid, vp, sr->isr_ssid_len);
|
|
if (sr->isr_ie_len > 0) {
|
|
vp += sr->isr_ssid_len;
|
|
ielen = sr->isr_ie_len;
|
|
while (ielen > 0) {
|
|
switch (vp[0]) {
|
|
case IEEE80211_ELEMID_VENDOR:
|
|
if (!iswpaoui(vp))
|
|
break;
|
|
wsr->wpa_ie_len =
|
|
min(2+vp[1], SSID_MAX_WPA_IE_LEN);
|
|
memcpy(wsr->wpa_ie, vp, wsr->wpa_ie_len);
|
|
break;
|
|
case IEEE80211_ELEMID_RSN:
|
|
wsr->rsn_ie_len =
|
|
min(2+vp[1], SSID_MAX_WPA_IE_LEN);
|
|
memcpy(wsr->rsn_ie, vp, wsr->rsn_ie_len);
|
|
break;
|
|
}
|
|
ielen -= 2+vp[1];
|
|
vp += 2+vp[1];
|
|
}
|
|
}
|
|
|
|
cp += sr->isr_len, len -= sr->isr_len;
|
|
wsr++;
|
|
}
|
|
qsort(results, wsr - results, sizeof(struct wpa_scan_result),
|
|
wpa_scan_result_compar);
|
|
|
|
wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%d BSSes)",
|
|
len, wsr - results);
|
|
|
|
return wsr - results;
|
|
#undef min
|
|
}
|
|
|
|
static void *
|
|
wpa_driver_bsd_init(void *ctx, const char *ifname)
|
|
{
|
|
#define GETPARAM(drv, param, v) \
|
|
(((v) = get80211param(drv, param)) != -1)
|
|
struct wpa_driver_bsd_data *drv;
|
|
|
|
drv = malloc(sizeof(*drv));
|
|
if (drv == NULL)
|
|
return NULL;
|
|
memset(drv, 0, sizeof(*drv));
|
|
/*
|
|
* NB: We require the interface name be mappable to an index.
|
|
* This implies we do not support having wpa_supplicant
|
|
* wait for an interface to appear. This seems ok; that
|
|
* doesn't belong here; it's really the job of devd.
|
|
*/
|
|
drv->ifindex = if_nametoindex(ifname);
|
|
if (drv->ifindex == 0) {
|
|
wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
|
|
__func__, ifname);
|
|
goto fail1;
|
|
}
|
|
drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (drv->sock < 0)
|
|
goto fail1;
|
|
drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
|
|
if (drv->route < 0)
|
|
goto fail;
|
|
eloop_register_read_sock(drv->route,
|
|
wpa_driver_bsd_event_receive, ctx, drv);
|
|
|
|
drv->ctx = ctx;
|
|
strncpy(drv->ifname, ifname, sizeof(drv->ifname));
|
|
|
|
if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
|
|
wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
|
|
__func__, strerror(errno));
|
|
goto fail;
|
|
}
|
|
if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
|
|
wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
|
|
__func__, strerror(errno));
|
|
goto fail;
|
|
}
|
|
if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
|
|
wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
|
|
__func__, strerror(errno));
|
|
goto fail;
|
|
}
|
|
if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
|
|
wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
|
|
"roaming: %s", __func__, strerror(errno));
|
|
goto fail;
|
|
}
|
|
|
|
if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
|
|
wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
|
|
__func__, strerror(errno));
|
|
goto fail;
|
|
}
|
|
|
|
return drv;
|
|
fail:
|
|
close(drv->sock);
|
|
fail1:
|
|
free(drv);
|
|
return NULL;
|
|
#undef GETPARAM
|
|
}
|
|
|
|
static void
|
|
wpa_driver_bsd_deinit(void *priv)
|
|
{
|
|
struct wpa_driver_bsd_data *drv = priv;
|
|
int flags;
|
|
|
|
/* NB: mark interface down */
|
|
if (getifflags(drv, &flags) == 0)
|
|
(void) setifflags(drv, flags &~ IFF_UP);
|
|
|
|
wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
|
|
if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
|
|
wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
|
|
__func__);
|
|
|
|
(void) close(drv->route); /* ioctl socket */
|
|
(void) close(drv->sock); /* event socket */
|
|
free(drv);
|
|
}
|
|
|
|
|
|
struct wpa_driver_ops wpa_driver_bsd_ops = {
|
|
.name = "bsd",
|
|
.desc = "BSD 802.11 support (Atheros, etc.)",
|
|
.init = wpa_driver_bsd_init,
|
|
.deinit = wpa_driver_bsd_deinit,
|
|
.get_bssid = wpa_driver_bsd_get_bssid,
|
|
.get_ssid = wpa_driver_bsd_get_ssid,
|
|
.set_wpa = wpa_driver_bsd_set_wpa,
|
|
.set_key = wpa_driver_bsd_set_key,
|
|
.set_countermeasures = wpa_driver_bsd_set_countermeasures,
|
|
.set_drop_unencrypted = wpa_driver_bsd_set_drop_unencrypted,
|
|
.scan = wpa_driver_bsd_scan,
|
|
.get_scan_results = wpa_driver_bsd_get_scan_results,
|
|
.deauthenticate = wpa_driver_bsd_deauthenticate,
|
|
.disassociate = wpa_driver_bsd_disassociate,
|
|
.associate = wpa_driver_bsd_associate,
|
|
.set_auth_alg = wpa_driver_bsd_set_auth_alg,
|
|
};
|