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ara-mdk / platform / hardware / ti / wlan / 8a8918c82bf55784cfb2ce3de8c1bfa76bc32331 / . / mac80211 / wpa_supplicant_lib / driver_mac80211.c
blob: c8d41e0c974b5036c5a96d50488b54a700d076c0 [file] [log] [blame]
/*
* WPA Supplicant - driver interaction with generic Linux Wireless Extensions
* Copyright (c) 2003-2007, 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.
*
* This file implements a driver interface for the Linux Wireless Extensions.
* When used with WE-18 or newer, this interface can be used as-is with number
* of drivers. In addition to this, some of the common functions in this file
* can be used by other driver interface implementations that use generic WE
* ioctls, but require private ioctls for some of the functionality.
*/
#include "includes.h"
#include <sys/ioctl.h>
#include <net/if_arp.h>
#include <net/if.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <cutils/properties.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>
#include "nl80211.h"
#include "wireless_copy.h"
#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "driver_wext.h"
#include "ieee802_11_defs.h"
#include "wpa_common.h"
#include "wpa_ctrl.h"
#include "wpa_supplicant_i.h"
#include "config_ssid.h"
#include "wpa_debug.h"
static int wpa_driver_wext_flush_pmkid(void *priv);
static int wpa_driver_wext_get_range(void *priv);
static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv);
static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
int linkmode, int operstate)
{
struct {
struct nlmsghdr hdr;
struct ifinfomsg ifinfo;
char opts[16];
} req;
struct rtattr *rta;
static int nl_seq;
ssize_t ret;
os_memset(&req, 0, sizeof(req));
req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.hdr.nlmsg_type = RTM_SETLINK;
req.hdr.nlmsg_flags = NLM_F_REQUEST;
req.hdr.nlmsg_seq = ++nl_seq;
req.hdr.nlmsg_pid = 0;
req.ifinfo.ifi_family = AF_UNSPEC;
req.ifinfo.ifi_type = 0;
req.ifinfo.ifi_index = drv->ifindex;
req.ifinfo.ifi_flags = 0;
req.ifinfo.ifi_change = 0;
if (linkmode != -1) {
rta = aliasing_hide_typecast(
((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
struct rtattr);
rta->rta_type = IFLA_LINKMODE;
rta->rta_len = RTA_LENGTH(sizeof(char));
*((char *) RTA_DATA(rta)) = linkmode;
req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
RTA_LENGTH(sizeof(char));
}
if (operstate != -1) {
rta = (struct rtattr *)
((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
rta->rta_type = IFLA_OPERSTATE;
rta->rta_len = RTA_LENGTH(sizeof(char));
*((char *) RTA_DATA(rta)) = operstate;
req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
RTA_LENGTH(sizeof(char));
}
wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
linkmode, operstate);
ret = send(drv->ioctl_sock, &req, req.hdr.nlmsg_len, 0);
if (ret < 0) {
wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
"%s (assume operstate is not supported)",
strerror(errno));
}
return ret < 0 ? -1 : 0;
}
static void
wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
{
union wpa_event_data data;
wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
custom);
os_memset(&data, 0, sizeof(data));
/* Host AP driver */
if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
data.michael_mic_failure.unicast =
os_strstr(custom, " unicast ") != NULL;
/* TODO: parse parameters(?) */
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
} else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
char *spos;
int bytes;
spos = custom + 17;
bytes = strspn(spos, "0123456789abcdefABCDEF");
if (!bytes || (bytes & 1)) {
return;
}
bytes /= 2;
data.assoc_info.req_ies = os_malloc(bytes);
if (data.assoc_info.req_ies == NULL) {
return;
}
data.assoc_info.req_ies_len = bytes;
hexstr2bin(spos, data.assoc_info.req_ies, bytes);
spos += bytes * 2;
data.assoc_info.resp_ies = NULL;
data.assoc_info.resp_ies_len = 0;
if (os_strncmp(spos, " RespIEs=", 9) == 0) {
spos += 9;
bytes = strspn(spos, "0123456789abcdefABCDEF");
if (!bytes || (bytes & 1)) {
goto done;
}
bytes /= 2;
data.assoc_info.resp_ies = os_malloc(bytes);
if (data.assoc_info.resp_ies == NULL) {
goto done;
}
data.assoc_info.resp_ies_len = bytes;
hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
}
wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
done:
os_free(data.assoc_info.resp_ies);
os_free(data.assoc_info.req_ies);
#ifdef CONFIG_PEERKEY
} else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
"STKSTART.request '%s'", custom + 17);
return;
}
wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
#endif /* CONFIG_PEERKEY */
#ifdef ANDROID
} else if (os_strncmp(custom, "STOP", 4) == 0) {
wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
} else if (os_strncmp(custom, "START", 5) == 0) {
wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
} else if (os_strncmp(custom, "HANG", 4) == 0) {
wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
#endif /* ANDROID */
}
}
static int wpa_driver_wext_event_wireless_michaelmicfailure(
void *ctx, const char *ev, size_t len)
{
const struct iw_michaelmicfailure *mic;
union wpa_event_data data;
if (len < sizeof(*mic)) {
return -1;
}
mic = (const struct iw_michaelmicfailure *) ev;
wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
"flags=0x%x src_addr=" MACSTR, mic->flags,
MAC2STR(mic->src_addr.sa_data));
os_memset(&data, 0, sizeof(data));
data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
return 0;
}
static int wpa_driver_wext_event_wireless_pmkidcand(
struct wpa_driver_wext_data *drv, const char *ev, size_t len)
{
const struct iw_pmkid_cand *cand;
union wpa_event_data data;
const u8 *addr;
if (len < sizeof(*cand)) {
return -1;
}
cand = (const struct iw_pmkid_cand *) ev;
addr = (const u8 *) cand->bssid.sa_data;
wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
"flags=0x%x index=%d bssid=" MACSTR, cand->flags,
cand->index, MAC2STR(addr));
os_memset(&data, 0, sizeof(data));
os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
data.pmkid_candidate.index = cand->index;
data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
return 0;
}
static int wpa_driver_wext_event_wireless_assocreqie(
struct wpa_driver_wext_data *drv, const char *ev, int len)
{
if (len < 0) {
return -1;
}
wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
len);
os_free(drv->assoc_req_ies);
drv->assoc_req_ies = os_malloc(len);
if (drv->assoc_req_ies == NULL) {
drv->assoc_req_ies_len = 0;
return -1;
}
os_memcpy(drv->assoc_req_ies, ev, len);
drv->assoc_req_ies_len = len;
return 0;
}
static int wpa_driver_wext_event_wireless_assocrespie(
struct wpa_driver_wext_data *drv, const char *ev, int len)
{
if (len < 0) {
return -1;
}
wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
len);
os_free(drv->assoc_resp_ies);
drv->assoc_resp_ies = os_malloc(len);
if (drv->assoc_resp_ies == NULL) {
drv->assoc_resp_ies_len = 0;
return -1;
}
os_memcpy(drv->assoc_resp_ies, ev, len);
drv->assoc_resp_ies_len = len;
return 0;
}
static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
{
union wpa_event_data data;
if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL) {
return;
}
os_memset(&data, 0, sizeof(data));
if (drv->assoc_req_ies) {
data.assoc_info.req_ies = drv->assoc_req_ies;
drv->assoc_req_ies = NULL;
data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
}
if (drv->assoc_resp_ies) {
data.assoc_info.resp_ies = drv->assoc_resp_ies;
drv->assoc_resp_ies = NULL;
data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
}
wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
os_free(data.assoc_info.req_ies);
os_free(data.assoc_info.resp_ies);
}
static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
void *ctx, 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. */
os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
wpa_printf(MSG_DEBUG, "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_compiled > 18 &&
(iwe->cmd == IWEVMICHAELMICFAILURE ||
iwe->cmd == IWEVCUSTOM ||
iwe->cmd == IWEVASSOCREQIE ||
iwe->cmd == IWEVASSOCRESPIE ||
iwe->cmd == IWEVPMKIDCAND)) {
/* WE-19 removed the pointer from struct iw_point */
char *dpos = (char *) &iwe_buf.u.data.length;
int dlen = dpos - (char *) &iwe_buf;
os_memcpy(dpos, pos + IW_EV_LCP_LEN,
sizeof(struct iw_event) - dlen);
} else {
os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
custom += IW_EV_POINT_OFF;
}
switch (iwe->cmd) {
case SIOCGIWAP:
wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
MACSTR,
MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
if (is_zero_ether_addr(
(const u8 *) iwe->u.ap_addr.sa_data) ||
os_memcmp(iwe->u.ap_addr.sa_data,
"\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
0) {
os_free(drv->assoc_req_ies);
drv->assoc_req_ies = NULL;
os_free(drv->assoc_resp_ies);
drv->assoc_resp_ies = NULL;
#ifdef ANDROID
if (!drv->skip_disconnect) {
drv->skip_disconnect = 1;
#endif
wpa_supplicant_event(ctx, EVENT_DISASSOC,
NULL);
#ifdef ANDROID
wpa_driver_wext_disconnect(drv);
}
#endif
} else {
#ifdef ANDROID
drv->skip_disconnect = 0;
#endif
wpa_driver_wext_event_assoc_ies(drv);
wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
}
break;
case IWEVMICHAELMICFAILURE:
if (custom + iwe->u.data.length > end) {
wpa_printf(MSG_DEBUG, "WEXT: Invalid "
"IWEVMICHAELMICFAILURE length");
return;
}
wpa_driver_wext_event_wireless_michaelmicfailure(
ctx, custom, iwe->u.data.length);
break;
case IWEVCUSTOM:
if (custom + iwe->u.data.length > end) {
wpa_printf(MSG_DEBUG, "WEXT: Invalid "
"IWEVCUSTOM length");
return;
}
buf = os_malloc(iwe->u.data.length + 1);
if (buf == NULL) {
return;
}
os_memcpy(buf, custom, iwe->u.data.length);
buf[iwe->u.data.length] = '\0';
wpa_driver_wext_event_wireless_custom(ctx, buf);
os_free(buf);
break;
case SIOCGIWSCAN:
drv->scan_complete_events = 1;
eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
drv, ctx);
wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
break;
case IWEVASSOCREQIE:
if (custom + iwe->u.data.length > end) {
wpa_printf(MSG_DEBUG, "WEXT: Invalid "
"IWEVASSOCREQIE length");
return;
}
wpa_driver_wext_event_wireless_assocreqie(
drv, custom, iwe->u.data.length);
break;
case IWEVASSOCRESPIE:
if (custom + iwe->u.data.length > end) {
wpa_printf(MSG_DEBUG, "WEXT: Invalid "
"IWEVASSOCRESPIE length");
return;
}
wpa_driver_wext_event_wireless_assocrespie(
drv, custom, iwe->u.data.length);
break;
case IWEVPMKIDCAND:
if (custom + iwe->u.data.length > end) {
wpa_printf(MSG_DEBUG, "WEXT: Invalid "
"IWEVPMKIDCAND length");
return;
}
wpa_driver_wext_event_wireless_pmkidcand(
drv, custom, iwe->u.data.length);
break;
}
pos += iwe->len;
}
}
static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
void *ctx, char *buf, size_t len,
int del)
{
union wpa_event_data event;
os_memset(&event, 0, sizeof(event));
if (len > sizeof(event.interface_status.ifname)) {
len = sizeof(event.interface_status.ifname) - 1;
}
os_memcpy(event.interface_status.ifname, buf, len);
event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
EVENT_INTERFACE_ADDED;
wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
del ? "DEL" : "NEW",
event.interface_status.ifname,
del ? "removed" : "added");
if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
if (del) {
drv->if_removed = 1;
} else {
drv->if_removed = 0;
}
}
wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
}
static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
struct nlmsghdr *h)
{
struct ifinfomsg *ifi;
int attrlen, nlmsg_len, rta_len;
struct rtattr *attr;
ifi = NLMSG_DATA(h);
nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
attrlen = h->nlmsg_len - nlmsg_len;
if (attrlen < 0) {
return 0;
}
attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
rta_len = RTA_ALIGN(sizeof(struct rtattr));
while (RTA_OK(attr, attrlen)) {
if (attr->rta_type == IFLA_IFNAME) {
if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
== 0) {
return 1;
} else {
break;
}
}
attr = RTA_NEXT(attr, attrlen);
}
return 0;
}
static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
int ifindex, struct nlmsghdr *h)
{
if (drv->ifindex == ifindex || drv->ifindex2 == ifindex) {
return 1;
}
if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
drv->ifindex = if_nametoindex(drv->ifname);
wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
"interface");
wpa_driver_wext_finish_drv_init(drv);
return 1;
}
return 0;
}
static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
void *ctx, struct nlmsghdr *h,
size_t len)
{
struct ifinfomsg *ifi;
int attrlen, nlmsg_len, rta_len;
struct rtattr * attr;
if (len < sizeof(*ifi)) {
return;
}
ifi = NLMSG_DATA(h);
if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
ifi->ifi_index);
return;
}
wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
"(%s%s%s%s)",
drv->operstate, ifi->ifi_flags,
(ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
(ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
(ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
(ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
/*
* Some drivers send the association event before the operup event--in
* this case, lifting operstate in wpa_driver_wext_set_operstate()
* fails. This will hit us when wpa_supplicant does not need to do
* IEEE 802.1X authentication
*/
if (drv->operstate == 1 &&
(ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
!(ifi->ifi_flags & IFF_RUNNING)) {
wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
}
nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
attrlen = h->nlmsg_len - nlmsg_len;
if (attrlen < 0) {
return;
}
attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
rta_len = RTA_ALIGN(sizeof(struct rtattr));
while (RTA_OK(attr, attrlen)) {
if (attr->rta_type == IFLA_WIRELESS) {
wpa_driver_wext_event_wireless(
drv, ctx, ((char *) attr) + rta_len,
attr->rta_len - rta_len);
} else if (attr->rta_type == IFLA_IFNAME) {
wpa_driver_wext_event_link(drv, ctx,
((char *) attr) + rta_len,
attr->rta_len - rta_len, 0);
}
attr = RTA_NEXT(attr, attrlen);
}
}
static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
void *ctx, struct nlmsghdr *h,
size_t len)
{
struct ifinfomsg *ifi;
int attrlen, nlmsg_len, rta_len;
struct rtattr * attr;
if (len < sizeof(*ifi)) {
return;
}
ifi = NLMSG_DATA(h);
nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
attrlen = h->nlmsg_len - nlmsg_len;
if (attrlen < 0) {
return;
}
attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
rta_len = RTA_ALIGN(sizeof(struct rtattr));
while (RTA_OK(attr, attrlen)) {
if (attr->rta_type == IFLA_IFNAME) {
wpa_driver_wext_event_link(drv, ctx,
((char *) attr) + rta_len,
attr->rta_len - rta_len, 1);
}
attr = RTA_NEXT(attr, attrlen);
}
}
static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
void *sock_ctx)
{
char buf[8192];
int left;
struct sockaddr_nl from;
socklen_t fromlen;
struct nlmsghdr *h;
int max_events = 10;
try_again:
fromlen = sizeof(from);
left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
(struct sockaddr *) &from, &fromlen);
if (left < 0) {
if (errno != EINTR && errno != EAGAIN) {
wpa_printf(MSG_ERROR, "%s: recvfrom(netlink): %d", __func__, errno); }
return;
}
h = (struct nlmsghdr *) buf;
while (left >= (int) sizeof(*h)) {
int len, plen;
len = h->nlmsg_len;
plen = len - sizeof(*h);
if (len > left || plen < 0) {
wpa_printf(MSG_DEBUG, "Malformed netlink message: "
"len=%d left=%d plen=%d",
len, left, plen);
break;
}
switch (h->nlmsg_type) {
case RTM_NEWLINK:
wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
h, plen);
break;
case RTM_DELLINK:
wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
h, plen);
break;
}
len = NLMSG_ALIGN(len);
left -= len;
h = (struct nlmsghdr *) ((char *) h + len);
}
if (left > 0) {
wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
"message", left);
}
if (--max_events > 0) {
/*
* Try to receive all events in one eloop call in order to
* limit race condition on cases where AssocInfo event, Assoc
* event, and EAPOL frames are received more or less at the
* same time. We want to process the event messages first
* before starting EAPOL processing.
*/
goto try_again;
}
}
static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
const char *ifname, int *flags)
{
struct ifreq ifr;
os_memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]");
return -1;
}
*flags = ifr.ifr_flags & 0xffff;
return 0;
}
static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
{
int flags;
if (wpa_driver_wext_get_ifflags(drv, &flags) != 0) {
printf("Could not get interface '%s' flags\n", drv->ifname);
} else if (!(flags & IFF_UP)) {
if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
printf("Could not set interface '%s' UP\n",
drv->ifname);
} else {
/*
* Wait some time to allow driver to initialize before
* starting configuring the driver. This seems to be
* needed at least some drivers that load firmware etc.
* when the interface is set up.
*/
wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
"a second for the driver to complete "
"initialization", drv->ifname);
sleep(1);
}
}
/*
* Make sure that the driver does not have any obsolete PMKID entries.
*/
wpa_driver_wext_flush_pmkid(drv);
if (wpa_driver_wext_set_mode(drv, 0) < 0) {
printf("Could not configure driver to use managed mode\n");
}
wpa_driver_wext_get_range(drv);
/*
* Unlock the driver's BSSID and force to a random SSID to clear any
* previous association the driver might have when the supplicant
* starts up.
*/
wpa_driver_wext_disconnect(drv);
drv->ifindex = if_nametoindex(drv->ifname);
if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
/*
* Host AP driver may use both wlan# and wifi# interface in
* wireless events. Since some of the versions included WE-18
* support, let's add the alternative ifindex also from
* driver_wext.c for the time being. This may be removed at
* some point once it is believed that old versions of the
* driver are not in use anymore.
*/
char ifname2[IFNAMSIZ + 1];
os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
os_memcpy(ifname2, "wifi", 4);
wpa_driver_wext_alternative_ifindex(drv, ifname2);
}
wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
}
/**
* wpa_driver_wext_set_scan_timeout - Set scan timeout to report scan completion
* @priv: Pointer to private wext data from wpa_driver_wext_init()
*
* This function can be used to set registered timeout when starting a scan to
* generate a scan completed event if the driver does not report this.
*/
static void wpa_driver_wext_set_scan_timeout(void *priv)
{
struct wpa_driver_wext_data *drv = priv;
int timeout = 10; /* In case scan A and B bands it can be long */
/* Not all drivers generate "scan completed" wireless event, so try to
* read results after a timeout. */
if (drv->scan_complete_events) {
/*
* The driver seems to deliver SIOCGIWSCAN events to notify
* when scan is complete, so use longer timeout to avoid race
* conditions with scanning and following association request.
*/
timeout = 30;
}
wpa_printf(MSG_DEBUG, "Scan requested - scan timeout %d seconds",
timeout);
eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
drv->ctx);
}
static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
size_t *len)
{
struct iwreq iwr;
u8 *res_buf;
size_t res_buf_len;
res_buf_len = IW_SCAN_MAX_DATA;
for (;;) {
res_buf = os_malloc(res_buf_len);
if (res_buf == NULL) {
return NULL;
}
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
iwr.u.data.pointer = res_buf;
iwr.u.data.length = res_buf_len;
if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0) {
break;
}
if (errno == E2BIG && res_buf_len < 65535) {
os_free(res_buf);
res_buf = NULL;
res_buf_len *= 2;
if (res_buf_len > 65535) {
res_buf_len = 65535; /* 16-bit length field */
}
wpa_printf(MSG_DEBUG, "Scan results did not fit - "
"trying larger buffer (%lu bytes)",
(unsigned long) res_buf_len);
} else {
wpa_printf(MSG_ERROR, "ioctl[SIOCGIWSCAN]: %d", errno);
os_free(res_buf);
return NULL;
}
}
if (iwr.u.data.length > res_buf_len) {
os_free(res_buf);
return NULL;
}
*len = iwr.u.data.length;
return res_buf;
}
/*
* Data structure for collecting WEXT scan results. This is needed to allow
* the various methods of reporting IEs to be combined into a single IE buffer.
*/
struct wext_scan_data {
struct wpa_scan_res res;
u8 *ie;
size_t ie_len;
u8 ssid[32];
size_t ssid_len;
int maxrate;
};
static void wext_get_scan_mode(struct iw_event *iwe,
struct wext_scan_data *res)
{
if (iwe->u.mode == IW_MODE_ADHOC) {
res->res.caps |= IEEE80211_CAP_IBSS;
} else if (iwe->u.mode == IW_MODE_MASTER ||
iwe->u.mode == IW_MODE_INFRA) {
res->res.caps |= IEEE80211_CAP_ESS;
}
}
static void wext_get_scan_ssid(struct iw_event *iwe,
struct wext_scan_data *res, char *custom,
char *end)
{
int ssid_len = iwe->u.essid.length;
if (custom + ssid_len > end) {
return;
}
if (iwe->u.essid.flags &&
ssid_len > 0 &&
ssid_len <= IW_ESSID_MAX_SIZE) {
os_memcpy(res->ssid, custom, ssid_len);
res->ssid_len = ssid_len;
}
}
static void wext_get_scan_freq(struct iw_event *iwe,
struct wext_scan_data *res)
{
int divi = 1000000, i;
if (iwe->u.freq.e == 0) {
/*
* Some drivers do not report frequency, but a channel.
* Try to map this to frequency by assuming they are using
* IEEE 802.11b/g. But don't overwrite a previously parsed
* frequency if the driver sends both frequency and channel,
* since the driver may be sending an A-band channel that we
* don't handle here.
*/
if (res->res.freq) {
return;
}
if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
res->res.freq = 2407 + 5 * iwe->u.freq.m;
return;
} else if (iwe->u.freq.m == 14) {
res->res.freq = 2484;
return;
}
}
if (iwe->u.freq.e > 6) {
wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
MACSTR " m=%d e=%d)",
MAC2STR(res->res.bssid), iwe->u.freq.m,
iwe->u.freq.e);
return;
}
for (i = 0; i < iwe->u.freq.e; i++)
divi /= 10;
res->res.freq = iwe->u.freq.m / divi;
}
static void wext_get_scan_qual(struct iw_event *iwe,
struct wext_scan_data *res)
{
res->res.qual = iwe->u.qual.qual;
res->res.noise = iwe->u.qual.noise;
res->res.level = iwe->u.qual.level;
}
static void wext_get_scan_encode(struct iw_event *iwe,
struct wext_scan_data *res)
{
if (!(iwe->u.data.flags & IW_ENCODE_DISABLED)) {
res->res.caps |= IEEE80211_CAP_PRIVACY;
}
}
static void wext_get_scan_rate(struct iw_event *iwe,
struct wext_scan_data *res, char *pos,
char *end)
{
int maxrate;
char *custom = pos + IW_EV_LCP_LEN;
struct iw_param p;
size_t clen;
clen = iwe->len;
if (custom + clen > end) {
return;
}
maxrate = 0;
while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
/* Note: may be misaligned, make a local, aligned copy */
os_memcpy(&p, custom, sizeof(struct iw_param));
if (p.value > maxrate) {
maxrate = p.value;
}
clen -= sizeof(struct iw_param);
custom += sizeof(struct iw_param);
}
/* Convert the maxrate from WE-style (b/s units) to
* 802.11 rates (500000 b/s units).
*/
res->maxrate = maxrate / 500000;
}
static void wext_get_scan_iwevgenie(struct iw_event *iwe,
struct wext_scan_data *res, char *custom,
char *end)
{
char *genie, *gpos, *gend;
u8 *tmp;
if (iwe->u.data.length == 0) {
return;
}
gpos = genie = custom;
gend = genie + iwe->u.data.length;
if (gend > end) {
wpa_printf(MSG_INFO, "IWEVGENIE overflow");
return;
}
tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
if (tmp == NULL) {
return;
}
os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
res->ie = tmp;
res->ie_len += gend - gpos;
}
static void wext_get_scan_custom(struct iw_event *iwe,
struct wext_scan_data *res, char *custom,
char *end)
{
size_t clen;
u8 *tmp;
clen = iwe->u.data.length;
if (custom + clen > end) {
return;
}
if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
char *spos;
int bytes;
spos = custom + 7;
bytes = custom + clen - spos;
if (bytes & 1 || bytes == 0) {
return;
}
bytes /= 2;
tmp = os_realloc(res->ie, res->ie_len + bytes);
if (tmp == NULL) {
return;
}
hexstr2bin(spos, tmp + res->ie_len, bytes);
res->ie = tmp;
res->ie_len += bytes;
} else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
char *spos;
int bytes;
spos = custom + 7;
bytes = custom + clen - spos;
if (bytes & 1 || bytes == 0) {
return;
}
bytes /= 2;
tmp = os_realloc(res->ie, res->ie_len + bytes);
if (tmp == NULL) {
return;
}
hexstr2bin(spos, tmp + res->ie_len, bytes);
res->ie = tmp;
res->ie_len += bytes;
} else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
char *spos;
int bytes;
u8 bin[8];
spos = custom + 4;
bytes = custom + clen - spos;
if (bytes != 16) {
wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
return;
}
bytes /= 2;
hexstr2bin(spos, bin, bytes);
res->res.tsf += WPA_GET_BE64(bin);
}
}
static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
{
return drv->we_version_compiled > 18 &&
(cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
cmd == IWEVGENIE || cmd == IWEVCUSTOM);
}
static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
struct wext_scan_data *data)
{
struct wpa_scan_res **tmp;
struct wpa_scan_res *r;
size_t extra_len;
u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
/* Figure out whether we need to fake any IEs */
pos = data->ie;
end = pos + data->ie_len;
while (pos && pos + 1 < end) {
if (pos + 2 + pos[1] > end) {
break;
}
if (pos[0] == WLAN_EID_SSID) {
ssid_ie = pos;
} else if (pos[0] == WLAN_EID_SUPP_RATES) {
rate_ie = pos;
} else if (pos[0] == WLAN_EID_EXT_SUPP_RATES) {
rate_ie = pos;
}
pos += 2 + pos[1];
}
extra_len = 0;
if (ssid_ie == NULL) {
extra_len += 2 + data->ssid_len;
}
if (rate_ie == NULL && data->maxrate) {
extra_len += 3;
}
r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
if (r == NULL) {
return;
}
os_memcpy(r, &data->res, sizeof(*r));
r->ie_len = extra_len + data->ie_len;
pos = (u8 *) (r + 1);
if (ssid_ie == NULL) {
/*
* Generate a fake SSID IE since the driver did not report
* a full IE list.
*/
*pos++ = WLAN_EID_SSID;
*pos++ = data->ssid_len;
os_memcpy(pos, data->ssid, data->ssid_len);
pos += data->ssid_len;
}
if (rate_ie == NULL && data->maxrate) {
/*
* Generate a fake Supported Rates IE since the driver did not
* report a full IE list.
*/
*pos++ = WLAN_EID_SUPP_RATES;
*pos++ = 1;
*pos++ = data->maxrate;
}
if (data->ie) {
os_memcpy(pos, data->ie, data->ie_len);
}
tmp = os_realloc(res->res,
(res->num + 1) * sizeof(struct wpa_scan_res *));
if (tmp == NULL) {
os_free(r);
return;
}
tmp[res->num++] = r;
res->res = tmp;
}
static int wpa_driver_wext_get_range(void *priv)
{
struct wpa_driver_wext_data *drv = priv;
struct iw_range *range;
struct iwreq iwr;
int minlen;
size_t buflen;
/*
* 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;
}
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, 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) {
wpa_printf(MSG_ERROR, "ioctl[SIOCGIRANGE]");
os_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->has_capability = 1;
drv->we_version_compiled = range->we_version_compiled;
if (range->enc_capa & IW_ENC_CAPA_WPA) {
drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
}
if (range->enc_capa & IW_ENC_CAPA_WPA2) {
drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
}
drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
WPA_DRIVER_CAPA_ENC_WEP104;
if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP) {
drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
}
if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP) {
drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
}
if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE) {
drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
}
drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
WPA_DRIVER_AUTH_SHARED |
WPA_DRIVER_AUTH_LEAP;
wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x "
"flags 0x%x",
drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
} else {
wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
"assuming WPA is not supported");
}
os_free(range);
return 0;
}
static int wpa_driver_wext_set_wpa(void *priv, int enabled)
{
struct wpa_driver_wext_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
enabled);
}
static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
const u8 *psk)
{
struct iw_encode_ext *ext;
struct iwreq iwr;
int ret;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) {
return 0;
}
if (!psk) {
return 0;
}
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
ext = os_zalloc(sizeof(*ext) + PMK_LEN);
if (ext == NULL) {
return -1;
}
iwr.u.encoding.pointer = (caddr_t) ext;
iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
ext->key_len = PMK_LEN;
os_memcpy(&ext->key, psk, ext->key_len);
ext->alg = IW_ENCODE_ALG_PMK;
ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
if (ret < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODEEXT] PMK");
}
os_free(ext);
return ret;
}
static int wpa_driver_wext_set_key_ext(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_wext_data *drv = priv;
struct iwreq iwr;
int ret = 0;
struct iw_encode_ext *ext;
if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
__FUNCTION__, (unsigned long) seq_len);
return -1;
}
ext = os_zalloc(sizeof(*ext) + key_len);
if (ext == NULL) {
return -1;
}
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
iwr.u.encoding.flags = key_idx + 1;
iwr.u.encoding.flags |= IW_ENCODE_TEMP;
if (alg == WPA_ALG_NONE) {
iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
}
iwr.u.encoding.pointer = (caddr_t) ext;
iwr.u.encoding.length = sizeof(*ext) + key_len;
if (addr == NULL ||
os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0) {
ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
}
if (set_tx) {
ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
}
ext->addr.sa_family = ARPHRD_ETHER;
if (addr) {
os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
} else {
os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
}
if (key && key_len) {
os_memcpy(ext + 1, key, key_len);
ext->key_len = key_len;
}
switch (alg) {
case WPA_ALG_NONE:
ext->alg = IW_ENCODE_ALG_NONE;
break;
case WPA_ALG_WEP:
ext->alg = IW_ENCODE_ALG_WEP;
break;
case WPA_ALG_TKIP:
ext->alg = IW_ENCODE_ALG_TKIP;
break;
case WPA_ALG_CCMP:
ext->alg = IW_ENCODE_ALG_CCMP;
break;
case WPA_ALG_PMK:
ext->alg = IW_ENCODE_ALG_PMK;
break;
#ifdef CONFIG_IEEE80211W
case WPA_ALG_IGTK:
ext->alg = IW_ENCODE_ALG_AES_CMAC;
break;
#endif /* CONFIG_IEEE80211W */
default:
wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
__FUNCTION__, alg);
os_free(ext);
return -1;
}
if (seq && seq_len) {
ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
os_memcpy(ext->rx_seq, seq, seq_len);
}
if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
ret = errno == EOPNOTSUPP ? -2 : -1;
if (errno == ENODEV) {
/*
* ndiswrapper seems to be returning incorrect error
* code.. */
ret = -2;
}
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODEEXT]");
}
os_free(ext);
return ret;
}
static int wpa_driver_wext_set_countermeasures(void *priv,
int enabled)
{
struct wpa_driver_wext_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_wext_set_auth_param(drv,
IW_AUTH_TKIP_COUNTERMEASURES,
enabled);
}
static int wpa_driver_wext_set_drop_unencrypted(void *priv,
int enabled)
{
struct wpa_driver_wext_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
drv->use_crypt = enabled;
return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
enabled);
}
static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
const u8 *addr, int cmd, int reason_code)
{
struct iwreq iwr;
struct iw_mlme mlme;
int ret = 0;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
os_memset(&mlme, 0, sizeof(mlme));
mlme.cmd = cmd;
mlme.reason_code = reason_code;
mlme.addr.sa_family = ARPHRD_ETHER;
os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
iwr.u.data.pointer = (caddr_t) &mlme;
iwr.u.data.length = sizeof(mlme);
if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWMLME]");
ret = -1;
}
return ret;
}
static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
{
struct iwreq iwr;
const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
#ifndef ANDROID
u8 ssid[32];
int i;
#endif
/*
* Only force-disconnect when the card is in infrastructure mode,
* otherwise the driver might interpret the cleared BSSID and random
* SSID as an attempt to create a new ad-hoc network.
*/
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCGIWMODE]");
iwr.u.mode = IW_MODE_INFRA;
}
if (iwr.u.mode == IW_MODE_INFRA) {
/*
* Clear the BSSID selection and set a random SSID to make sure
* the driver will not be trying to associate with something
* even if it does not understand SIOCSIWMLME commands (or
* tries to associate automatically after deauth/disassoc).
*/
wpa_driver_wext_set_bssid(drv, null_bssid);
#ifndef ANDROID
for (i = 0; i < 32; i++)
ssid[i] = rand() & 0xFF;
wpa_driver_wext_set_ssid(drv, ssid, 32);
#endif
}
}
static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_wext_data *drv = priv;
int ret;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
wpa_driver_wext_disconnect(drv);
return ret;
}
static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_wext_data *drv = priv;
int ret;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
wpa_driver_wext_disconnect(drv);
return ret;
}
static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
size_t ie_len)
{
struct wpa_driver_wext_data *drv = priv;
struct iwreq iwr;
int ret = 0;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
iwr.u.data.pointer = (caddr_t) ie;
iwr.u.data.length = ie_len;
if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWGENIE]");
ret = -1;
}
return ret;
}
static int
wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
struct wpa_driver_associate_params *params)
{
struct iwreq iwr;
int ret = 0;
wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
"SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
/* Just changing mode, not actual keys */
iwr.u.encoding.flags = 0;
iwr.u.encoding.pointer = (caddr_t) NULL;
iwr.u.encoding.length = 0;
/*
* Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
* different things. Here they are used to indicate Open System vs.
* Shared Key authentication algorithm. However, some drivers may use
* them to select between open/restricted WEP encrypted (open = allow
* both unencrypted and encrypted frames; restricted = only allow
* encrypted frames).
*/
if (!drv->use_crypt) {
iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
} else {
if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM) {
iwr.u.encoding.flags |= IW_ENCODE_OPEN;
}
if (params->auth_alg & AUTH_ALG_SHARED_KEY) {
iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
}
}
if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWENCODE]");
ret = -1;
}
return ret;
}
static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
{
struct wpa_driver_wext_data *drv = priv;
int algs = 0, res;
if (auth_alg & AUTH_ALG_OPEN_SYSTEM) {
algs |= IW_AUTH_ALG_OPEN_SYSTEM;
}
if (auth_alg & AUTH_ALG_SHARED_KEY) {
algs |= IW_AUTH_ALG_SHARED_KEY;
}
if (auth_alg & AUTH_ALG_LEAP) {
algs |= IW_AUTH_ALG_LEAP;
}
if (algs == 0) {
/* at least one algorithm should be set */
algs = IW_AUTH_ALG_OPEN_SYSTEM;
}
res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
algs);
drv->auth_alg_fallback = res == -2;
return res;
}
static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
u32 cmd, const u8 *bssid, const u8 *pmkid)
{
struct iwreq iwr;
struct iw_pmksa pmksa;
int ret = 0;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
os_memset(&pmksa, 0, sizeof(pmksa));
pmksa.cmd = cmd;
pmksa.bssid.sa_family = ARPHRD_ETHER;
if (bssid) {
os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
}
if (pmkid) {
os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
}
iwr.u.data.pointer = (caddr_t) &pmksa;
iwr.u.data.length = sizeof(pmksa);
if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
if (errno != EOPNOTSUPP) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPMKSA]");
}
ret = -1;
}
return ret;
}
static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
const u8 *pmkid)
{
struct wpa_driver_wext_data *drv = priv;
return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
}
static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
const u8 *pmkid)
{
struct wpa_driver_wext_data *drv = priv;
return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
}
static int wpa_driver_wext_flush_pmkid(void *priv)
{
struct wpa_driver_wext_data *drv = priv;
return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
}
#ifdef ANDROID
static int wpa_driver_wext_get_mac_addr(void *priv, u8 *addr)
{
struct wpa_driver_wext_data *drv = priv;
struct ifreq ifr;
static const u8 nullmac[ETH_ALEN] = {0};
os_memset(&ifr, 0, sizeof(ifr));
os_strncpy(ifr.ifr_name, drv->ifname, IFNAMSIZ);
if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) < 0) {
perror("ioctl[SIOCGIFHWADDR]");
return -1;
}
os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
if (os_memcmp(addr, nullmac, ETH_ALEN) == 0) {
return -1;
}
return 0;
}
static int wpa_driver_wext_get_rssi(void *priv)
{
struct wpa_driver_wext_data *drv = priv;
struct iwreq iwr;
struct iw_statistics iws;
int sig = 0;
os_memset(&iwr, 0, sizeof(iwr));
iwr.u.data.pointer = (char*)&iws;
iwr.u.data.length = sizeof(iws);
iwr.u.data.flags = 1;
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
if (ioctl(drv->ioctl_sock, SIOCGIWSTATS, &iwr) < 0) {
perror("ioctl[SIOCGIWSTATS]");
return -1;
}
sig = iws.qual.level;
if (sig == 0) {
return -1;
}
if (iws.qual.updated & IW_QUAL_DBM) {
sig -= 0x100;
}
return sig;
}
static int wpa_driver_wext_get_linkspeed(void *priv)
{
struct wpa_driver_wext_data *drv = priv;
struct iwreq iwr;
int linkspeed;
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
if (ioctl(drv->ioctl_sock, SIOCGIWRATE, &iwr) < 0) {
perror("ioctl[SIOCGIWRATE]");
return -1;
}
linkspeed = iwr.u.bitrate.value / 1000000;
return linkspeed;
}
static char *wpa_driver_get_country_code(int channels)
{
static char *country = "US"; /* WEXT_NUMBER_SCAN_CHANNELS_FCC */
if (channels == WEXT_NUMBER_SCAN_CHANNELS_ETSI) {
country = "EU";
} else if( channels == WEXT_NUMBER_SCAN_CHANNELS_MKK1) {
country = "JP";
}
return country;
}
/* global NL structures */
struct nl_handle *nl_sock;
struct nl_cache *nl_cache;
struct genl_family *nl80211;
static int wpa_driver_init_nl() {
int err;
nl_sock = nl_socket_alloc();
if (!nl_sock) {
wpa_printf(MSG_DEBUG,"Failed to allocate netlink socket.");
return -ENOMEM;
}
if (genl_connect(nl_sock)) {
wpa_printf(MSG_DEBUG,"Failed to connect to generic netlink.");
err = -ENOLINK;
goto out_handle_destroy;
}
genl_ctrl_alloc_cache(nl_sock, &nl_cache);
if (!nl_cache) {
wpa_printf(MSG_DEBUG,"Failed to allocate generic netlink cache.");
err = -ENOMEM;
goto out_handle_destroy;
}
nl80211 = genl_ctrl_search_by_name(nl_cache, "nl80211");
if (!nl80211) {
wpa_printf(MSG_DEBUG,"nl80211 not found.");
err = -ENOENT;
goto out_cache_free;
}
return 0;
out_cache_free:
nl_cache_free(nl_cache);
out_handle_destroy:
nl_socket_free(nl_sock);
return err;
}
static void wpa_driver_deinit_nl() {
genl_family_put(nl80211);
nl_cache_free(nl_cache);
nl_socket_free(nl_sock);
}
static int nl_error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
{
int *ret = (int *)arg;
*ret = err->error;
return NL_STOP;
}
static int nl_finish_handler(struct nl_msg *msg, void *arg)
{
int *ret = (int *)arg;
*ret = 0;
return NL_SKIP;
}
static int nl_ack_handler(struct nl_msg *msg, void *arg)
{
int *ret = (int *)arg;
*ret = 0;
return NL_STOP;
}
static int wpa_driver_set_power_save(char *iface, int state)
{
int ret;
struct nl_cb *cb;
struct nl_msg *msg;
int devidx = 0;
int err;
enum nl80211_ps_state ps_state;
ret = wpa_driver_init_nl();
if (ret != 0) {
return ret;
}
ret = -1;
devidx = if_nametoindex(iface);
if (devidx == 0) {
wpa_printf(MSG_DEBUG,"failed to translate ifname to idx");
goto exit;
}
msg = nlmsg_alloc();
if (!msg) {
wpa_printf(MSG_DEBUG,"failed to allocate netlink message");
goto exit;
}
cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!cb) {
wpa_printf(MSG_DEBUG,"failed to allocate netlink callbacks");
goto out_free_msg;
}
genlmsg_put(msg, 0, 0, genl_family_get_id(nl80211), 0, 0,
NL80211_CMD_SET_POWER_SAVE, 0);
if (state != 0) {
ps_state = NL80211_PS_ENABLED;
} else {
ps_state = NL80211_PS_DISABLED;
}
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, devidx);
NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
err = nl_send_auto_complete(nl_sock, msg);
if (err < 0) {
wpa_printf(MSG_DEBUG, "could not send auto_complete: %d", err);
goto out;
}
err = 1;
nl_cb_err(cb, NL_CB_CUSTOM, nl_error_handler, &err);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nl_finish_handler, &err);
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, nl_ack_handler, &err);
while (err > 0)
nl_recvmsgs(nl_sock, cb);
ret = 0;
out:
nl_cb_put(cb);
out_free_msg:
nlmsg_free(msg);
nla_put_failure:
exit:
wpa_driver_deinit_nl();
return ret;
}
static int wpa_driver_set_country(char *iface, char *country)
{
int ret;
struct nl_cb *cb;
struct nl_msg *msg;
int devidx = 0;
int err;
char alpha2[3];
ret = wpa_driver_init_nl();
if (ret != 0) {
return ret;
}
ret = -1;
devidx = if_nametoindex(iface);
if (devidx == 0) {
wpa_printf(MSG_DEBUG,"failed to translate ifname to idx");
goto exit;
}
msg = nlmsg_alloc();
if (!msg) {
wpa_printf(MSG_DEBUG,"failed to allocate netlink message");
goto exit;
}
cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!cb) {
wpa_printf(MSG_DEBUG,"failed to allocate netlink callbacks");
goto out_free_msg;
}
alpha2[0] = country[0];
alpha2[1] = country[1];
alpha2[2] = '\0';
genlmsg_put(msg, 0, 0, genl_family_get_id(nl80211), 0, 0,
NL80211_CMD_REQ_SET_REG, 0);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, devidx);
NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
err = nl_send_auto_complete(nl_sock, msg);
if (err < 0) {
wpa_printf(MSG_DEBUG, "could not send auto_complete: %d", err);
goto out;
}
err = 1;
nl_cb_err(cb, NL_CB_CUSTOM, nl_error_handler, &err);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nl_finish_handler, &err);
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, nl_ack_handler, &err);
while (err > 0)
nl_recvmsgs(nl_sock, cb);
ret = 0;
out:
nl_cb_put(cb);
out_free_msg:
nlmsg_free(msg);
nla_put_failure:
exit:
wpa_driver_deinit_nl();
return ret;
}
static int wpa_driver_toggle_btcoex_state(char state)
{
int ret;
int fd = open("/sys/devices/platform/wl1271/bt_coex_state", O_RDWR, 0);
if (fd == -1) {
return -1;
}
ret = write(fd, &state, sizeof(state));
close(fd);
wpa_printf(MSG_DEBUG, "%s: set btcoex state to '%c' result = %d", __func__,
state, ret);
return ret;
}
static int wpa_driver_toggle_rx_filter(char state)
{
return 0; /* not implemented yet */
}
/* we start with "auto" power mode - power_save is on */
int g_power_mode = 0;
/* currently cached scan type */
u8 g_scan_type = IW_SCAN_TYPE_ACTIVE;
/* start with "world" num of channels */
int g_num_channels = 13;
static int wpa_driver_priv_driver_cmd( void *priv, char *cmd, char *buf, size_t buf_len )
{
struct wpa_driver_wext_data *drv = priv;
struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx);
int ret = 0, flags;
wpa_printf(MSG_DEBUG, "%s %s len = %d", __func__, cmd, buf_len);
if (os_strcasecmp(cmd, "STOP") == 0) {
if ((wpa_driver_wext_get_ifflags(drv, &flags) == 0) &&
(flags & IFF_UP)) {
wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
}
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
} else if (os_strcasecmp(cmd, "START") == 0) {
if ((wpa_driver_wext_get_ifflags(drv, &flags) == 0) &&
!(flags & IFF_UP)) {
wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
}
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
} else if (os_strcasecmp(cmd, "MACADDR") == 0) {
u8 macaddr[ETH_ALEN] = {};
ret = wpa_driver_wext_get_mac_addr(priv, macaddr);
if (ret < 0) {
goto out;
}
ret = os_snprintf(buf, buf_len, "Macaddr = " MACSTR "\n", MAC2STR(macaddr));
} else if ((os_strcasecmp(cmd, "RSSI") == 0) || (os_strcasecmp(cmd, "RSSI-APPROX") == 0)) {
u8 ssid[MAX_SSID_LEN];
int rssi;
rssi = wpa_driver_wext_get_rssi(priv);
if ((rssi != -1) && (wpa_driver_wext_get_ssid(priv, ssid) > 0)) {
ret = os_snprintf(buf, buf_len, "%s rssi %d\n", ssid, rssi);
} else {
ret = -1;
}
} else if (os_strcasecmp(cmd, "LINKSPEED") == 0) {
int linkspeed;
linkspeed = wpa_driver_wext_get_linkspeed(priv);
if (linkspeed != -1) {
ret = os_snprintf(buf, buf_len, "LinkSpeed %d\n", linkspeed);
} else {
ret = -1;
}
} else if( os_strcasecmp(cmd, "RELOAD") == 0 ) {
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
} else if( os_strcasecmp(cmd, "SCAN-PASSIVE") == 0 ) {
g_scan_type = IW_SCAN_TYPE_PASSIVE;
ret = 0;
} else if( os_strcasecmp(cmd, "SCAN-ACTIVE") == 0 ) {
g_scan_type = IW_SCAN_TYPE_ACTIVE;
ret = 0;
} else if( os_strcasecmp(cmd, "SCAN-MODE") == 0 ) {
ret = snprintf(buf, buf_len, "ScanMode = %u\n", g_scan_type);
if (ret < (int)buf_len) {
return ret;
}
} else if( os_strncasecmp(cmd, "POWERMODE", 9) == 0 ) {
int mode = atoi(cmd + 9);
if (mode == g_power_mode) {
ret = 0;
} else if (mode == 1) { /* active mode */
ret = wpa_driver_set_power_save(drv->ifname, 0);
} else if (mode == 0) { /* auto mode */
ret = wpa_driver_set_power_save(drv->ifname, 1);
}
if (!ret) {
g_power_mode = mode;
}
wpa_printf(MSG_DEBUG, "global POWERMODE set to %d (wanted %d), ret %d",
g_power_mode, mode, ret);
} else if( os_strcasecmp(cmd, "GETPOWER") == 0 ) {
ret = sprintf(buf, "powermode = %u\n", g_power_mode);
} else if( os_strncasecmp(cmd, "BTCOEXMODE", 10) == 0 ) {
int mode = atoi(cmd + 10);
wpa_printf(MSG_DEBUG, "will change btcoex mode to: %d", mode);
if (mode == 1) { /* disable BT-coex */
ret = wpa_driver_toggle_btcoex_state('0');
} else if (mode == 2) { /* enable BT-coex */
ret = wpa_driver_toggle_btcoex_state('1');
} else {
wpa_printf(MSG_DEBUG, "invalid btcoex mode: %d", mode);
ret = -1;
}
} else if( os_strcasecmp(cmd, "RXFILTER-START") == 0 ) {
ret = wpa_driver_toggle_rx_filter('1');
} else if( os_strcasecmp(cmd, "RXFILTER-STOP") == 0 ) {
ret = wpa_driver_toggle_rx_filter('0');
} else if( os_strncasecmp(cmd, "country", 7) == 0 ) {
wpa_printf(MSG_DEBUG, "setting country code to: %s", cmd + 8);
ret = wpa_driver_set_country(drv->ifname, cmd + 8);
} else {
wpa_printf(MSG_ERROR, "Unsupported command: %s", cmd);
ret = -1;
}
out:
return ret;
}
#endif
/**
* wpa_driver_wext_scan_custom - Request the driver to initiate scan
* @priv: Pointer to private wext data from wpa_driver_wext_init()
* @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
* all SSIDs (either active scan with broadcast SSID or passive
* scan
* @ssid_len: Length of the SSID
* Returns: 0 on success, -1 on failure
*/
int wpa_driver_wext_scan_custom(void *priv, const u8 *ssid, size_t ssid_len)
{
struct wpa_driver_wext_data *drv = priv;
struct iwreq iwr;
int ret = 0;
struct iw_scan_req req;
#ifdef ANDROID
struct wpa_supplicant *wpa_s = (struct wpa_supplicant *)(drv->ctx);
int scan_probe_flag = 0;
#endif
if (ssid_len > IW_ESSID_MAX_SIZE) {
wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
__FUNCTION__, (unsigned long) ssid_len);
return -1;
}
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
os_memset(&req, 0, sizeof(req));
req.scan_type = g_scan_type; /* Scan type is cached */
req.bssid.sa_family = ARPHRD_ETHER;
os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
iwr.u.data.pointer = (caddr_t) &req;
iwr.u.data.length = sizeof(req);
iwr.u.data.flags = IW_SCAN_THIS_ESSID;
wpa_printf(MSG_DEBUG, "%s: scanning with scan type: %s", __func__,
g_scan_type == IW_SCAN_TYPE_PASSIVE ? "PASSIVE" : "ACTIVE");
#ifdef ANDROID
if (wpa_s->prev_scan_ssid != BROADCAST_SSID_SCAN) {
scan_probe_flag = wpa_s->prev_scan_ssid->scan_ssid;
}
wpa_printf(MSG_DEBUG, "%s: specific scan = %d", __func__,
(scan_probe_flag && (ssid && ssid_len)) ? 1 : 0);
if (scan_probe_flag && (ssid && ssid_len)) {
#else
if (ssid && ssid_len) {
#endif
req.essid_len = ssid_len;
os_memcpy(req.essid, ssid, ssid_len);
}
if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
wpa_printf(MSG_ERROR, "ioctl[SIOCSIWSCAN]");
ret = -1;
}
wpa_driver_wext_set_scan_timeout(priv);
return ret;
}
const struct wpa_driver_ops wpa_driver_custom_ops = {
.name = "mac80211_wext",
.desc = "mac80211 station driver for TI wl12xx",
.get_bssid = wpa_driver_wext_get_bssid,
.get_ssid = wpa_driver_wext_get_ssid,
.set_wpa = wpa_driver_wext_set_wpa,
.set_key = wpa_driver_wext_set_key,
.set_countermeasures = wpa_driver_wext_set_countermeasures,
.set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
.scan = wpa_driver_wext_scan_custom,
.get_scan_results2 = wpa_driver_wext_get_scan_results,
.deauthenticate = wpa_driver_wext_deauthenticate,
.disassociate = wpa_driver_wext_disassociate,
.set_mode = wpa_driver_wext_set_mode,
.associate = wpa_driver_wext_associate,
.set_auth_alg = wpa_driver_wext_set_auth_alg,
.init = wpa_driver_wext_init,
.deinit = wpa_driver_wext_deinit,
.add_pmkid = wpa_driver_wext_add_pmkid,
.remove_pmkid = wpa_driver_wext_remove_pmkid,
.flush_pmkid = wpa_driver_wext_flush_pmkid,
.get_capa = wpa_driver_wext_get_capa,
.set_operstate = wpa_driver_wext_set_operstate,
#ifdef ANDROID
.driver_cmd = wpa_driver_priv_driver_cmd,
#endif
};