/*
- * WPA Supplicant - driver interaction with Linux Host AP driver
+ * Driver interaction with Linux Host AP driver
* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
#include "driver_hostap.h"
+#ifdef HOSTAPD
+
+#include <net/if_arp.h>
+#include <netpacket/packet.h>
+
+#include "priv_netlink.h"
+#include "netlink.h"
+#include "linux_ioctl.h"
+#include "common/ieee802_11_defs.h"
+
+
+/* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
+ * frames that might be longer than normal default MTU and they are not
+ * fragmented */
+#define HOSTAPD_MTU 2290
+
+static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+
+struct hostap_driver_data {
+ struct hostapd_data *hapd;
+
+ char iface[IFNAMSIZ + 1];
+ int sock; /* raw packet socket for driver access */
+ int ioctl_sock; /* socket for ioctl() use */
+ struct netlink_data *netlink;
+
+ int we_version;
+
+ u8 *generic_ie;
+ size_t generic_ie_len;
+ u8 *wps_ie;
+ size_t wps_ie_len;
+};
+
+
+static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
+ int len);
+static int hostap_set_iface_flags(void *priv, int dev_up);
+
+static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
+ u16 stype)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc, ethertype;
+ u8 *pos, *sa;
+ size_t left;
+ union wpa_event_data event;
+
+ if (len < sizeof(struct ieee80211_hdr))
+ return;
+
+ hdr = (struct ieee80211_hdr *) buf;
+ fc = le_to_host16(hdr->frame_control);
+
+ if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
+ printf("Not ToDS data frame (fc=0x%04x)\n", fc);
+ return;
+ }
+
+ sa = hdr->addr2;
+ os_memset(&event, 0, sizeof(event));
+ event.rx_from_unknown.frame = buf;
+ event.rx_from_unknown.len = len;
+ wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event);
+
+ pos = (u8 *) (hdr + 1);
+ left = len - sizeof(*hdr);
+
+ if (left < sizeof(rfc1042_header)) {
+ printf("Too short data frame\n");
+ return;
+ }
+
+ if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
+ printf("Data frame with no RFC1042 header\n");
+ return;
+ }
+ pos += sizeof(rfc1042_header);
+ left -= sizeof(rfc1042_header);
+
+ if (left < 2) {
+ printf("No ethertype in data frame\n");
+ return;
+ }
+
+ ethertype = WPA_GET_BE16(pos);
+ pos += 2;
+ left -= 2;
+ switch (ethertype) {
+ case ETH_P_PAE:
+ drv_event_eapol_rx(drv->hapd, sa, pos, left);
+ break;
+
+ default:
+ printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
+ break;
+ }
+}
+
+
+static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
+ size_t len, int ok)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc;
+ union wpa_event_data event;
+
+ hdr = (struct ieee80211_hdr *) buf;
+ fc = le_to_host16(hdr->frame_control);
+
+ os_memset(&event, 0, sizeof(event));
+ event.tx_status.type = WLAN_FC_GET_TYPE(fc);
+ event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
+ event.tx_status.dst = hdr->addr1;
+ event.tx_status.data = buf;
+ event.tx_status.data_len = len;
+ event.tx_status.ack = ok;
+ wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event);
+}
+
+
+static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc, extra_len, type, stype;
+ unsigned char *extra = NULL;
+ size_t data_len = len;
+ int ver;
+ union wpa_event_data event;
+
+ /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
+ * these to user space */
+ if (len < 24) {
+ wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
+ (unsigned long) len);
+ return;
+ }
+
+ hdr = (struct ieee80211_hdr *) buf;
+ fc = le_to_host16(hdr->frame_control);
+ type = WLAN_FC_GET_TYPE(fc);
+ stype = WLAN_FC_GET_STYPE(fc);
+
+ if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
+ wpa_hexdump(MSG_MSGDUMP, "Received management frame",
+ buf, len);
+ }
+
+ ver = fc & WLAN_FC_PVER;
+
+ /* protocol version 3 is reserved for indicating extra data after the
+ * payload, version 2 for indicating ACKed frame (TX callbacks), and
+ * version 1 for indicating failed frame (no ACK, TX callbacks) */
+ if (ver == 3) {
+ u8 *pos = buf + len - 2;
+ extra_len = WPA_GET_LE16(pos);
+ printf("extra data in frame (elen=%d)\n", extra_len);
+ if ((size_t) extra_len + 2 > len) {
+ printf(" extra data overflow\n");
+ return;
+ }
+ len -= extra_len + 2;
+ extra = buf + len;
+ } else if (ver == 1 || ver == 2) {
+ handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
+ return;
+ } else if (ver != 0) {
+ printf("unknown protocol version %d\n", ver);
+ return;
+ }
+
+ switch (type) {
+ case WLAN_FC_TYPE_MGMT:
+ os_memset(&event, 0, sizeof(event));
+ event.rx_mgmt.frame = buf;
+ event.rx_mgmt.frame_len = data_len;
+ wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ wpa_printf(MSG_DEBUG, "CTRL");
+ break;
+ case WLAN_FC_TYPE_DATA:
+ wpa_printf(MSG_DEBUG, "DATA");
+ handle_data(drv, buf, data_len, stype);
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
+ break;
+ }
+}
+
+
+static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct hostap_driver_data *drv = eloop_ctx;
+ int len;
+ unsigned char buf[3000];
+
+ len = recv(sock, buf, sizeof(buf), 0);
+ if (len < 0) {
+ perror("recv");
+ return;
+ }
+
+ handle_frame(drv, buf, len);
+}
+
+
+static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
+{
+ struct ifreq ifr;
+ struct sockaddr_ll addr;
+
+ drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+ if (drv->sock < 0) {
+ perror("socket[PF_PACKET,SOCK_RAW]");
+ return -1;
+ }
+
+ if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
+ printf("Could not register read socket\n");
+ return -1;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface);
+ if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
+ perror("ioctl(SIOCGIFINDEX)");
+ return -1;
+ }
+
+ if (hostap_set_iface_flags(drv, 1)) {
+ return -1;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sll_family = AF_PACKET;
+ addr.sll_ifindex = ifr.ifr_ifindex;
+ wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
+ addr.sll_ifindex);
+
+ if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("bind");
+ return -1;
+ }
+
+ return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr);
+}
+
+
+static int hostap_send_mlme(void *priv, const u8 *msg, size_t len)
+{
+ struct hostap_driver_data *drv = priv;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
+ int res;
+
+ /* Request TX callback */
+ hdr->frame_control |= host_to_le16(BIT(1));
+ res = send(drv->sock, msg, len, 0);
+ hdr->frame_control &= ~host_to_le16(BIT(1));
+
+ return res;
+}
+
+
+static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
+ size_t data_len, int encrypt, const u8 *own_addr)
+{
+ struct hostap_driver_data *drv = priv;
+ struct ieee80211_hdr *hdr;
+ size_t len;
+ u8 *pos;
+ int res;
+
+ len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
+ hdr = os_zalloc(len);
+ if (hdr == NULL) {
+ printf("malloc() failed for hostapd_send_data(len=%lu)\n",
+ (unsigned long) len);
+ return -1;
+ }
+
+ hdr->frame_control =
+ IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
+ hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
+ if (encrypt)
+ hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
+ memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
+
+ pos = (u8 *) (hdr + 1);
+ memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
+ pos += sizeof(rfc1042_header);
+ *((u16 *) pos) = htons(ETH_P_PAE);
+ pos += 2;
+ memcpy(pos, data, data_len);
+
+ res = hostap_send_mlme(drv, (u8 *) hdr, len);
+ if (res < 0) {
+ wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
+ "failed: %d (%s)",
+ (unsigned long) len, errno, strerror(errno));
+ }
+ free(hdr);
+
+ return res;
+}
+
+
+static int hostap_sta_set_flags(void *priv, const u8 *addr,
+ int total_flags, int flags_or, int flags_and)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+
+ if (flags_or & WPA_STA_AUTHORIZED)
+ flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
+ if (!(flags_and & WPA_STA_AUTHORIZED))
+ flags_and = ~BIT(5);
+ else
+ flags_and = ~0;
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
+ memcpy(param.sta_addr, addr, ETH_ALEN);
+ param.u.set_flags_sta.flags_or = flags_or;
+ param.u.set_flags_sta.flags_and = flags_and;
+ return hostapd_ioctl(drv, ¶m, sizeof(param));
+}
+
+
+static int hostap_set_iface_flags(void *priv, int dev_up)
+{
+ struct hostap_driver_data *drv = priv;
+ struct ifreq ifr;
+ char ifname[IFNAMSIZ];
+
+ os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface);
+ if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0)
+ return -1;
+
+ if (dev_up) {
+ memset(&ifr, 0, sizeof(ifr));
+ os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+ ifr.ifr_mtu = HOSTAPD_MTU;
+ if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
+ perror("ioctl[SIOCSIFMTU]");
+ printf("Setting MTU failed - trying to survive with "
+ "current value\n");
+ }
+ }
+
+ return 0;
+}
+
+
+static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
+ int len)
+{
+ struct hostap_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+ iwr.u.data.pointer = (caddr_t) param;
+ iwr.u.data.length = len;
+
+ if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
+ perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
+ enum wpa_alg alg, const u8 *addr,
+ int key_idx, int set_tx,
+ const u8 *seq, size_t seq_len,
+ const u8 *key, size_t key_len)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param *param;
+ u8 *buf;
+ size_t blen;
+ int ret = 0;
+
+ blen = sizeof(*param) + key_len;
+ buf = os_zalloc(blen);
+ if (buf == NULL)
+ return -1;
+
+ param = (struct prism2_hostapd_param *) buf;
+ param->cmd = PRISM2_SET_ENCRYPTION;
+ if (addr == NULL)
+ memset(param->sta_addr, 0xff, ETH_ALEN);
+ else
+ memcpy(param->sta_addr, addr, ETH_ALEN);
+ switch (alg) {
+ case WPA_ALG_NONE:
+ os_strlcpy((char *) param->u.crypt.alg, "NONE",
+ HOSTAP_CRYPT_ALG_NAME_LEN);
+ break;
+ case WPA_ALG_WEP:
+ os_strlcpy((char *) param->u.crypt.alg, "WEP",
+ HOSTAP_CRYPT_ALG_NAME_LEN);
+ break;
+ case WPA_ALG_TKIP:
+ os_strlcpy((char *) param->u.crypt.alg, "TKIP",
+ HOSTAP_CRYPT_ALG_NAME_LEN);
+ break;
+ case WPA_ALG_CCMP:
+ os_strlcpy((char *) param->u.crypt.alg, "CCMP",
+ HOSTAP_CRYPT_ALG_NAME_LEN);
+ break;
+ default:
+ os_free(buf);
+ return -1;
+ }
+ param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
+ param->u.crypt.idx = key_idx;
+ param->u.crypt.key_len = key_len;
+ memcpy((u8 *) (param + 1), key, key_len);
+
+ if (hostapd_ioctl(drv, param, blen)) {
+ printf("Failed to set encryption.\n");
+ ret = -1;
+ }
+ free(buf);
+
+ return ret;
+}
+
+
+static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
+ int idx, u8 *seq)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param *param;
+ u8 *buf;
+ size_t blen;
+ int ret = 0;
+
+ blen = sizeof(*param) + 32;
+ buf = os_zalloc(blen);
+ if (buf == NULL)
+ return -1;
+
+ param = (struct prism2_hostapd_param *) buf;
+ param->cmd = PRISM2_GET_ENCRYPTION;
+ if (addr == NULL)
+ memset(param->sta_addr, 0xff, ETH_ALEN);
+ else
+ memcpy(param->sta_addr, addr, ETH_ALEN);
+ param->u.crypt.idx = idx;
+
+ if (hostapd_ioctl(drv, param, blen)) {
+ printf("Failed to get encryption.\n");
+ ret = -1;
+ } else {
+ memcpy(seq, param->u.crypt.seq, 8);
+ }
+ free(buf);
+
+ return ret;
+}
+
+
+static int hostap_ioctl_prism2param(void *priv, int param, int value)
+{
+ struct hostap_driver_data *drv = priv;
+ struct iwreq iwr;
+ int *i;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+ i = (int *) iwr.u.name;
+ *i++ = param;
+ *i++ = value;
+
+ if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
+ perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
+{
+ struct hostap_driver_data *drv = priv;
+ int enabled = params->enabled;
+
+ /* enable kernel driver support for IEEE 802.1X */
+ if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
+ printf("Could not setup IEEE 802.1X support in kernel driver."
+ "\n");
+ return -1;
+ }
+
+ if (!enabled)
+ return 0;
+
+ /* use host driver implementation of encryption to allow
+ * individual keys and passing plaintext EAPOL frames */
+ if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
+ hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
+ printf("Could not setup host-based encryption in kernel "
+ "driver.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int hostap_set_privacy(void *priv, int enabled)
+{
+ struct hostap_drvier_data *drv = priv;
+
+ return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
+ enabled);
+}
+
+
+static int hostap_set_ssid(void *priv, const u8 *buf, int len)
+{
+ struct hostap_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+ iwr.u.essid.flags = 1; /* SSID active */
+ iwr.u.essid.pointer = (caddr_t) buf;
+ iwr.u.essid.length = len + 1;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
+ perror("ioctl[SIOCSIWESSID]");
+ printf("len=%d\n", len);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int hostap_flush(void *priv)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_FLUSH;
+ return hostapd_ioctl(drv, ¶m, sizeof(param));
+}
+
+
+static int hostap_read_sta_data(void *priv,
+ struct hostap_sta_driver_data *data,
+ const u8 *addr)
+{
+ struct hostap_driver_data *drv = priv;
+ char buf[1024], line[128], *pos;
+ FILE *f;
+ unsigned long val;
+
+ memset(data, 0, sizeof(*data));
+ snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
+ drv->iface, MAC2STR(addr));
+
+ f = fopen(buf, "r");
+ if (!f)
+ return -1;
+ /* Need to read proc file with in one piece, so use large enough
+ * buffer. */
+ setbuffer(f, buf, sizeof(buf));
+
+ while (fgets(line, sizeof(line), f)) {
+ pos = strchr(line, '=');
+ if (!pos)
+ continue;
+ *pos++ = '\0';
+ val = strtoul(pos, NULL, 10);
+ if (strcmp(line, "rx_packets") == 0)
+ data->rx_packets = val;
+ else if (strcmp(line, "tx_packets") == 0)
+ data->tx_packets = val;
+ else if (strcmp(line, "rx_bytes") == 0)
+ data->rx_bytes = val;
+ else if (strcmp(line, "tx_bytes") == 0)
+ data->tx_bytes = val;
+ }
+
+ fclose(f);
+
+ return 0;
+}
+
+
+static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+ int tx_supp_rates = 0;
+ size_t i;
+
+#define WLAN_RATE_1M BIT(0)
+#define WLAN_RATE_2M BIT(1)
+#define WLAN_RATE_5M5 BIT(2)
+#define WLAN_RATE_11M BIT(3)
+
+ for (i = 0; i < params->supp_rates_len; i++) {
+ if ((params->supp_rates[i] & 0x7f) == 2)
+ tx_supp_rates |= WLAN_RATE_1M;
+ if ((params->supp_rates[i] & 0x7f) == 4)
+ tx_supp_rates |= WLAN_RATE_2M;
+ if ((params->supp_rates[i] & 0x7f) == 11)
+ tx_supp_rates |= WLAN_RATE_5M5;
+ if ((params->supp_rates[i] & 0x7f) == 22)
+ tx_supp_rates |= WLAN_RATE_11M;
+ }
+
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_ADD_STA;
+ memcpy(param.sta_addr, params->addr, ETH_ALEN);
+ param.u.add_sta.aid = params->aid;
+ param.u.add_sta.capability = params->capability;
+ param.u.add_sta.tx_supp_rates = tx_supp_rates;
+ return hostapd_ioctl(drv, ¶m, sizeof(param));
+}
+
+
+static int hostap_sta_remove(void *priv, const u8 *addr)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+
+ hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
+
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
+ memcpy(param.sta_addr, addr, ETH_ALEN);
+ if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
+ printf("Could not remove station from kernel driver.\n");
+ return -1;
+ }
+ return 0;
+}
+
+
+static int hostap_get_inact_sec(void *priv, const u8 *addr)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
+ memcpy(param.sta_addr, addr, ETH_ALEN);
+ if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
+ return -1;
+ }
+
+ return param.u.get_info_sta.inactive_sec;
+}
+
+
+static int hostap_sta_clear_stats(void *priv, const u8 *addr)
+{
+ struct hostap_driver_data *drv = priv;
+ struct prism2_hostapd_param param;
+
+ memset(¶m, 0, sizeof(param));
+ param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
+ memcpy(param.sta_addr, addr, ETH_ALEN);
+ if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
+{
+ struct prism2_hostapd_param *param;
+ int res;
+ size_t blen, elem_len;
+
+ elem_len = drv->generic_ie_len + drv->wps_ie_len;
+ blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
+ if (blen < sizeof(*param))
+ blen = sizeof(*param);
+
+ param = os_zalloc(blen);
+ if (param == NULL)
+ return -1;
+
+ param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
+ param->u.generic_elem.len = elem_len;
+ if (drv->generic_ie) {
+ os_memcpy(param->u.generic_elem.data, drv->generic_ie,
+ drv->generic_ie_len);
+ }
+ if (drv->wps_ie) {
+ os_memcpy(¶m->u.generic_elem.data[drv->generic_ie_len],
+ drv->wps_ie, drv->wps_ie_len);
+ }
+ wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
+ param->u.generic_elem.data, elem_len);
+ res = hostapd_ioctl(drv, param, blen);
+
+ os_free(param);
+
+ return res;
+}
+
+
+static int hostap_set_generic_elem(void *priv,
+ const u8 *elem, size_t elem_len)
+{
+ struct hostap_driver_data *drv = priv;
+
+ os_free(drv->generic_ie);
+ drv->generic_ie = NULL;
+ drv->generic_ie_len = 0;
+ if (elem) {
+ drv->generic_ie = os_malloc(elem_len);
+ if (drv->generic_ie == NULL)
+ return -1;
+ os_memcpy(drv->generic_ie, elem, elem_len);
+ drv->generic_ie_len = elem_len;
+ }
+
+ return hostapd_ioctl_set_generic_elem(drv);
+}
+
+
+static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
+ const struct wpabuf *proberesp,
+ const struct wpabuf *assocresp)
+{
+ struct hostap_driver_data *drv = priv;
+
+ /*
+ * Host AP driver supports only one set of extra IEs, so we need to
+ * use the Probe Response IEs also for Beacon frames since they include
+ * more information.
+ */
+
+ os_free(drv->wps_ie);
+ drv->wps_ie = NULL;
+ drv->wps_ie_len = 0;
+ if (proberesp) {
+ drv->wps_ie = os_malloc(wpabuf_len(proberesp));
+ if (drv->wps_ie == NULL)
+ return -1;
+ os_memcpy(drv->wps_ie, wpabuf_head(proberesp),
+ wpabuf_len(proberesp));
+ drv->wps_ie_len = wpabuf_len(proberesp);
+ }
+
+ return hostapd_ioctl_set_generic_elem(drv);
+}
+
+
+static void
+hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
+ char *custom)
+{
+ wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
+
+ if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
+ char *pos;
+ u8 addr[ETH_ALEN];
+ pos = strstr(custom, "addr=");
+ if (pos == NULL) {
+ wpa_printf(MSG_DEBUG,
+ "MLME-MICHAELMICFAILURE.indication "
+ "without sender address ignored");
+ return;
+ }
+ pos += 5;
+ if (hwaddr_aton(pos, addr) == 0) {
+ union wpa_event_data data;
+ os_memset(&data, 0, sizeof(data));
+ data.michael_mic_failure.unicast = 1;
+ data.michael_mic_failure.src = addr;
+ wpa_supplicant_event(drv->hapd,
+ EVENT_MICHAEL_MIC_FAILURE, &data);
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "MLME-MICHAELMICFAILURE.indication "
+ "with invalid MAC address");
+ }
+ }
+}
+
+
+static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
+ char *data, int len)
+{
+ struct iw_event iwe_buf, *iwe = &iwe_buf;
+ char *pos, *end, *custom, *buf;
+
+ pos = data;
+ end = data + len;
+
+ while (pos + IW_EV_LCP_LEN <= end) {
+ /* Event data may be unaligned, so make a local, aligned copy
+ * before processing. */
+ memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
+ wpa_printf(MSG_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 > 18 &&
+ (iwe->cmd == IWEVMICHAELMICFAILURE ||
+ iwe->cmd == IWEVCUSTOM)) {
+ /* WE-19 removed the pointer from struct iw_point */
+ char *dpos = (char *) &iwe_buf.u.data.length;
+ int dlen = dpos - (char *) &iwe_buf;
+ memcpy(dpos, pos + IW_EV_LCP_LEN,
+ sizeof(struct iw_event) - dlen);
+ } else {
+ memcpy(&iwe_buf, pos, sizeof(struct iw_event));
+ custom += IW_EV_POINT_OFF;
+ }
+
+ switch (iwe->cmd) {
+ case IWEVCUSTOM:
+ if (custom + iwe->u.data.length > end)
+ return;
+ buf = malloc(iwe->u.data.length + 1);
+ if (buf == NULL)
+ return;
+ memcpy(buf, custom, iwe->u.data.length);
+ buf[iwe->u.data.length] = '\0';
+ hostapd_wireless_event_wireless_custom(drv, buf);
+ free(buf);
+ break;
+ }
+
+ pos += iwe->len;
+ }
+}
+
+
+static void hostapd_wireless_event_rtm_newlink(void *ctx,
+ struct ifinfomsg *ifi,
+ u8 *buf, size_t len)
+{
+ struct hostap_driver_data *drv = ctx;
+ int attrlen, rta_len;
+ struct rtattr *attr;
+
+ /* TODO: use ifi->ifi_index to filter out wireless events from other
+ * interfaces */
+
+ attrlen = len;
+ attr = (struct rtattr *) buf;
+
+ rta_len = RTA_ALIGN(sizeof(struct rtattr));
+ while (RTA_OK(attr, attrlen)) {
+ if (attr->rta_type == IFLA_WIRELESS) {
+ hostapd_wireless_event_wireless(
+ drv, ((char *) attr) + rta_len,
+ attr->rta_len - rta_len);
+ }
+ attr = RTA_NEXT(attr, attrlen);
+ }
+}
+
+
+static int hostap_get_we_version(struct hostap_driver_data *drv)
+{
+ struct iw_range *range;
+ struct iwreq iwr;
+ int minlen;
+ size_t buflen;
+
+ drv->we_version = 0;
+
+ /*
+ * Use larger buffer than struct iw_range in order to allow the
+ * structure to grow in the future.
+ */
+ buflen = sizeof(struct iw_range) + 500;
+ range = os_zalloc(buflen);
+ if (range == NULL)
+ return -1;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
+ iwr.u.data.pointer = (caddr_t) range;
+ iwr.u.data.length = buflen;
+
+ minlen = ((char *) &range->enc_capa) - (char *) range +
+ sizeof(range->enc_capa);
+
+ if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
+ perror("ioctl[SIOCGIWRANGE]");
+ free(range);
+ return -1;
+ } else if (iwr.u.data.length >= minlen &&
+ range->we_version_compiled >= 18) {
+ wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
+ "WE(source)=%d enc_capa=0x%x",
+ range->we_version_compiled,
+ range->we_version_source,
+ range->enc_capa);
+ drv->we_version = range->we_version_compiled;
+ }
+
+ free(range);
+ return 0;
+}
+
+
+static int hostap_wireless_event_init(struct hostap_driver_data *drv)
+{
+ struct netlink_config *cfg;
+
+ hostap_get_we_version(drv);
+
+ cfg = os_zalloc(sizeof(*cfg));
+ if (cfg == NULL)
+ return -1;
+ cfg->ctx = drv;
+ cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
+ drv->netlink = netlink_init(cfg);
+ if (drv->netlink == NULL) {
+ os_free(cfg);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static void * hostap_init(struct hostapd_data *hapd,
+ struct wpa_init_params *params)
+{
+ struct hostap_driver_data *drv;
+
+ drv = os_zalloc(sizeof(struct hostap_driver_data));
+ if (drv == NULL) {
+ printf("Could not allocate memory for hostapd driver data\n");
+ return NULL;
+ }
+
+ drv->hapd = hapd;
+ drv->ioctl_sock = drv->sock = -1;
+ memcpy(drv->iface, params->ifname, sizeof(drv->iface));
+
+ drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
+ if (drv->ioctl_sock < 0) {
+ perror("socket[PF_INET,SOCK_DGRAM]");
+ free(drv);
+ return NULL;
+ }
+
+ if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
+ printf("Could not enable hostapd mode for interface %s\n",
+ drv->iface);
+ close(drv->ioctl_sock);
+ free(drv);
+ return NULL;
+ }
+
+ if (hostap_init_sockets(drv, params->own_addr) ||
+ hostap_wireless_event_init(drv)) {
+ close(drv->ioctl_sock);
+ free(drv);
+ return NULL;
+ }
+
+ return drv;
+}
+
+
+static void hostap_driver_deinit(void *priv)
+{
+ struct hostap_driver_data *drv = priv;
+
+ netlink_deinit(drv->netlink);
+ (void) hostap_set_iface_flags(drv, 0);
+ (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0);
+ (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0);
+
+ if (drv->ioctl_sock >= 0)
+ close(drv->ioctl_sock);
+
+ if (drv->sock >= 0)
+ close(drv->sock);
+
+ os_free(drv->generic_ie);
+ os_free(drv->wps_ie);
+
+ free(drv);
+}
+
+
+static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
+ int reason)
+{
+ struct hostap_driver_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DEAUTH);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ memcpy(mgmt.sa, own_addr, ETH_ALEN);
+ memcpy(mgmt.bssid, own_addr, ETH_ALEN);
+ mgmt.u.deauth.reason_code = host_to_le16(reason);
+ return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
+ sizeof(mgmt.u.deauth));
+}
+
+
+static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
+ int reason)
+{
+ struct hostap_driver_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DISASSOC);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ memcpy(mgmt.sa, own_addr, ETH_ALEN);
+ memcpy(mgmt.bssid, own_addr, ETH_ALEN);
+ mgmt.u.disassoc.reason_code = host_to_le16(reason);
+ return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
+ sizeof(mgmt.u.disassoc));
+}
+
+
+static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
+ u16 *num_modes,
+ u16 *flags)
+{
+ struct hostapd_hw_modes *mode;
+ int i, clen, rlen;
+ const short chan2freq[14] = {
+ 2412, 2417, 2422, 2427, 2432, 2437, 2442,
+ 2447, 2452, 2457, 2462, 2467, 2472, 2484
+ };
+
+ mode = os_zalloc(sizeof(struct hostapd_hw_modes));
+ if (mode == NULL)
+ return NULL;
+
+ *num_modes = 1;
+ *flags = 0;
+
+ mode->mode = HOSTAPD_MODE_IEEE80211B;
+ mode->num_channels = 14;
+ mode->num_rates = 4;
+
+ clen = mode->num_channels * sizeof(struct hostapd_channel_data);
+ rlen = mode->num_rates * sizeof(int);
+
+ mode->channels = os_zalloc(clen);
+ mode->rates = os_zalloc(rlen);
+ if (mode->channels == NULL || mode->rates == NULL) {
+ os_free(mode->channels);
+ os_free(mode->rates);
+ os_free(mode);
+ return NULL;
+ }
+
+ for (i = 0; i < 14; i++) {
+ mode->channels[i].chan = i + 1;
+ mode->channels[i].freq = chan2freq[i];
+ /* TODO: Get allowed channel list from the driver */
+ if (i >= 11)
+ mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
+ }
+
+ mode->rates[0] = 10;
+ mode->rates[1] = 20;
+ mode->rates[2] = 55;
+ mode->rates[3] = 110;
+
+ return mode;
+}
+
+#else /* HOSTAPD */
+
struct wpa_driver_hostap_data {
void *wext; /* private data for driver_wext */
void *ctx;
};
+static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg);
+
+
static int hostapd_ioctl(struct wpa_driver_hostap_data *drv,
struct prism2_hostapd_param *param,
int len, int show_err)
if (ioctl(drv->sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
int ret = errno;
- if (show_err)
+ if (show_err)
perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
return ret;
}
}
-static int wpa_driver_hostap_set_key(void *priv, wpa_alg alg,
- const u8 *addr, int key_idx,
- int set_tx, const u8 *seq, size_t seq_len,
+static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
+ enum wpa_alg alg, const u8 *addr,
+ int key_idx, int set_tx,
+ const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct wpa_driver_hostap_data *drv = priv;
}
-static int wpa_driver_hostap_set_drop_unencrypted(void *priv, int enabled)
-{
- struct wpa_driver_hostap_data *drv = priv;
- wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
- return prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED, enabled);
-}
-
-
static int wpa_driver_hostap_reset(struct wpa_driver_hostap_data *drv,
int type)
{
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
+ if (prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED,
+ params->drop_unencrypted) < 0)
+ ret = -1;
+ if (wpa_driver_hostap_set_auth_alg(drv, params->auth_alg) < 0)
+ ret = -1;
if (params->mode != drv->current_mode) {
/* At the moment, Host AP driver requires host_roaming=2 for
* infrastructure mode and host_roaming=0 for adhoc. */
}
-static int wpa_driver_hostap_scan(void *priv, const u8 *ssid, size_t ssid_len)
+static int wpa_driver_hostap_scan(void *priv,
+ struct wpa_driver_scan_params *params)
{
struct wpa_driver_hostap_data *drv = priv;
struct prism2_hostapd_param param;
int ret;
+ const u8 *ssid = params->ssids[0].ssid;
+ size_t ssid_len = params->ssids[0].ssid_len;
if (ssid == NULL) {
/* Use standard Linux Wireless Extensions ioctl if possible
* because some drivers using hostap code in wpa_supplicant
* might not support Host AP specific scan request (with SSID
* info). */
- return wpa_driver_wext_scan(drv->wext, ssid, ssid_len);
+ return wpa_driver_wext_scan(drv->wext, params);
}
if (ssid_len > 32)
struct wpa_driver_hostap_data *drv = priv;
int algs = 0;
- if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
+ if (auth_alg & WPA_AUTH_ALG_OPEN)
algs |= 1;
- if (auth_alg & AUTH_ALG_SHARED_KEY)
+ if (auth_alg & WPA_AUTH_ALG_SHARED)
algs |= 2;
- if (auth_alg & AUTH_ALG_LEAP)
+ if (auth_alg & WPA_AUTH_ALG_LEAP)
algs |= 4;
if (algs == 0)
algs = 1; /* at least one algorithm should be set */
wpa_driver_wext_alternative_ifindex(drv->wext, ifname2);
}
+ wpa_driver_hostap_set_wpa(drv, 1);
+
return drv;
}
static void wpa_driver_hostap_deinit(void *priv)
{
struct wpa_driver_hostap_data *drv = priv;
+ wpa_driver_hostap_set_wpa(drv, 0);
wpa_driver_wext_deinit(drv->wext);
close(drv->sock);
os_free(drv);
}
+#endif /* HOSTAPD */
+
const struct wpa_driver_ops wpa_driver_hostap_ops = {
.name = "hostap",
.desc = "Host AP driver (Intersil Prism2/2.5/3)",
+ .set_key = wpa_driver_hostap_set_key,
+#ifdef HOSTAPD
+ .hapd_init = hostap_init,
+ .hapd_deinit = hostap_driver_deinit,
+ .set_ieee8021x = hostap_set_ieee8021x,
+ .set_privacy = hostap_set_privacy,
+ .get_seqnum = hostap_get_seqnum,
+ .flush = hostap_flush,
+ .set_generic_elem = hostap_set_generic_elem,
+ .read_sta_data = hostap_read_sta_data,
+ .hapd_send_eapol = hostap_send_eapol,
+ .sta_set_flags = hostap_sta_set_flags,
+ .sta_deauth = hostap_sta_deauth,
+ .sta_disassoc = hostap_sta_disassoc,
+ .sta_remove = hostap_sta_remove,
+ .hapd_set_ssid = hostap_set_ssid,
+ .send_mlme = hostap_send_mlme,
+ .sta_add = hostap_sta_add,
+ .get_inact_sec = hostap_get_inact_sec,
+ .sta_clear_stats = hostap_sta_clear_stats,
+ .get_hw_feature_data = hostap_get_hw_feature_data,
+ .set_ap_wps_ie = hostap_set_ap_wps_ie,
+#else /* HOSTAPD */
.get_bssid = wpa_driver_hostap_get_bssid,
.get_ssid = wpa_driver_hostap_get_ssid,
- .set_wpa = wpa_driver_hostap_set_wpa,
- .set_key = wpa_driver_hostap_set_key,
.set_countermeasures = wpa_driver_hostap_set_countermeasures,
- .set_drop_unencrypted = wpa_driver_hostap_set_drop_unencrypted,
- .scan = wpa_driver_hostap_scan,
+ .scan2 = wpa_driver_hostap_scan,
.get_scan_results2 = wpa_driver_hostap_get_scan_results,
.deauthenticate = wpa_driver_hostap_deauthenticate,
.disassociate = wpa_driver_hostap_disassociate,
.associate = wpa_driver_hostap_associate,
- .set_auth_alg = wpa_driver_hostap_set_auth_alg,
.init = wpa_driver_hostap_init,
.deinit = wpa_driver_hostap_deinit,
.set_operstate = wpa_driver_hostap_set_operstate,
+#endif /* HOSTAPD */
};
projects / libeap.git / blobdiff