diff options
Diffstat (limited to 'src/drivers/driver_nl80211.c')
| -rw-r--r-- | src/drivers/driver_nl80211.c | 2752 |
1 files changed, 0 insertions, 2752 deletions
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c deleted file mode 100644 index ec26480..0000000 --- a/src/drivers/driver_nl80211.c +++ /dev/null @@ -1,2752 +0,0 @@ -/* - * WPA Supplicant - driver interaction with Linux nl80211/cfg80211 - * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Alternatively, this software may be distributed under the terms of BSD - * license. - * - * See README and COPYING for more details. - */ - -#include "includes.h" -#include <sys/ioctl.h> -#include <net/if_arp.h> -#include <netlink/genl/genl.h> -#include <netlink/genl/family.h> -#include <netlink/genl/ctrl.h> -#include "nl80211_copy.h" -#ifdef CONFIG_CLIENT_MLME -#include <netpacket/packet.h> -#include <linux/if_ether.h> -#include "radiotap.h" -#include "radiotap_iter.h" -#endif /* CONFIG_CLIENT_MLME */ - -#include "wireless_copy.h" -#include "common.h" -#include "driver.h" -#include "eloop.h" -#include "ieee802_11_defs.h" - -#ifndef IFF_LOWER_UP -#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ -#endif -#ifndef IFF_DORMANT -#define IFF_DORMANT 0x20000 /* driver signals dormant */ -#endif - -#ifndef IF_OPER_DORMANT -#define IF_OPER_DORMANT 5 -#endif -#ifndef IF_OPER_UP -#define IF_OPER_UP 6 -#endif - - -struct wpa_driver_nl80211_data { - void *ctx; - int wext_event_sock; - int ioctl_sock; - char ifname[IFNAMSIZ + 1]; - int ifindex; - int if_removed; - u8 *assoc_req_ies; - size_t assoc_req_ies_len; - u8 *assoc_resp_ies; - size_t assoc_resp_ies_len; - struct wpa_driver_capa capa; - int has_capability; - int we_version_compiled; - - /* for set_auth_alg fallback */ - int use_crypt; - int auth_alg_fallback; - - int operstate; - - char mlmedev[IFNAMSIZ + 1]; - - int scan_complete_events; - - struct nl_handle *nl_handle; - struct nl_cache *nl_cache; - struct nl_cb *nl_cb; - struct genl_family *nl80211; - -#ifdef CONFIG_CLIENT_MLME - int monitor_sock; /* socket for monitor */ - int monitor_ifidx; -#endif /* CONFIG_CLIENT_MLME */ -}; - - -static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, - void *timeout_ctx); -static int wpa_driver_nl80211_set_mode(void *priv, int mode); -static int wpa_driver_nl80211_flush_pmkid(void *priv); -static int wpa_driver_nl80211_get_range(void *priv); -static void -wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); - - -/* nl80211 code */ -static int ack_handler(struct nl_msg *msg, void *arg) -{ - int *err = arg; - *err = 0; - return NL_STOP; -} - -static int finish_handler(struct nl_msg *msg, void *arg) -{ - int *ret = arg; - *ret = 0; - return NL_SKIP; -} - -static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, - void *arg) -{ - int *ret = arg; - *ret = err->error; - return NL_SKIP; -} - -static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, - struct nl_msg *msg, - int (*valid_handler)(struct nl_msg *, void *), - void *valid_data) -{ - struct nl_cb *cb; - int err = -ENOMEM; - - cb = nl_cb_clone(drv->nl_cb); - if (!cb) - goto out; - - err = nl_send_auto_complete(drv->nl_handle, msg); - if (err < 0) - goto out; - - err = 1; - - nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); - nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); - nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); - - if (valid_handler) - nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, - valid_handler, valid_data); - - while (err > 0) - nl_recvmsgs(drv->nl_handle, cb); - out: - nl_cb_put(cb); - nlmsg_free(msg); - return err; -} - - -struct family_data { - const char *group; - int id; -}; - - -static int family_handler(struct nl_msg *msg, void *arg) -{ - struct family_data *res = arg; - struct nlattr *tb[CTRL_ATTR_MAX + 1]; - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct nlattr *mcgrp; - int i; - - nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), NULL); - if (!tb[CTRL_ATTR_MCAST_GROUPS]) - return NL_SKIP; - - nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { - struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; - nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), - nla_len(mcgrp), NULL); - if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || - !tb2[CTRL_ATTR_MCAST_GRP_ID] || - os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), - res->group, - nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) - continue; - res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); - break; - }; - - return NL_SKIP; -} - - -static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv, - const char *family, const char *group) -{ - struct nl_msg *msg; - int ret = -1; - struct family_data res = { group, -ENOENT }; - - msg = nlmsg_alloc(); - if (!msg) - return -ENOMEM; - genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"), - 0, 0, CTRL_CMD_GETFAMILY, 0); - NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); - - ret = send_and_recv_msgs(drv, msg, family_handler, &res); - msg = NULL; - if (ret == 0) - ret = res.id; - -nla_put_failure: - nlmsg_free(msg); - return ret; -} - - -static int wpa_driver_nl80211_send_oper_ifla( - struct wpa_driver_nl80211_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 = (struct rtattr *) - ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)); - 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->wext_event_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 int wpa_driver_nl80211_set_auth_param( - struct wpa_driver_nl80211_data *drv, int idx, u32 value) -{ - struct iwreq iwr; - int ret = 0; - - os_memset(&iwr, 0, sizeof(iwr)); - os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); - iwr.u.param.flags = idx & IW_AUTH_INDEX; - iwr.u.param.value = value; - - if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) { - if (errno != EOPNOTSUPP) { - wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d " - "value 0x%x) failed: %s)", - idx, value, strerror(errno)); - } - ret = errno == EOPNOTSUPP ? -2 : -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct iwreq iwr; - int ret = 0; - - os_memset(&iwr, 0, sizeof(iwr)); - os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); - - if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) { - perror("ioctl[SIOCGIWAP]"); - ret = -1; - } - os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN); - - return ret; -} - - -static int wpa_driver_nl80211_set_bssid(void *priv, const u8 *bssid) -{ - struct wpa_driver_nl80211_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.ap_addr.sa_family = ARPHRD_ETHER; - if (bssid) - os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN); - else - os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN); - - if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) { - perror("ioctl[SIOCSIWAP]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) -{ - struct wpa_driver_nl80211_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.essid.pointer = (caddr_t) ssid; - iwr.u.essid.length = 32; - - if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) { - perror("ioctl[SIOCGIWESSID]"); - ret = -1; - } else { - ret = iwr.u.essid.length; - if (ret > 32) - ret = 32; - /* Some drivers include nul termination in the SSID, so let's - * remove it here before further processing. WE-21 changes this - * to explicitly require the length _not_ to include nul - * termination. */ - if (ret > 0 && ssid[ret - 1] == '\0' && - drv->we_version_compiled < 21) - ret--; - } - - return ret; -} - - -static int wpa_driver_nl80211_set_ssid(void *priv, const u8 *ssid, - size_t ssid_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct iwreq iwr; - int ret = 0; - char buf[33]; - - if (ssid_len > 32) - return -1; - - os_memset(&iwr, 0, sizeof(iwr)); - os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); - /* flags: 1 = ESSID is active, 0 = not (promiscuous) */ - iwr.u.essid.flags = (ssid_len != 0); - os_memset(buf, 0, sizeof(buf)); - os_memcpy(buf, ssid, ssid_len); - iwr.u.essid.pointer = (caddr_t) buf; - if (drv->we_version_compiled < 21) { - /* For historic reasons, set SSID length to include one extra - * character, C string nul termination, even though SSID is - * really an octet string that should not be presented as a C - * string. Some Linux drivers decrement the length by one and - * can thus end up missing the last octet of the SSID if the - * length is not incremented here. WE-21 changes this to - * explicitly require the length _not_ to include nul - * termination. */ - if (ssid_len) - ssid_len++; - } - iwr.u.essid.length = ssid_len; - - if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) { - perror("ioctl[SIOCSIWESSID]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_set_freq(void *priv, int freq) -{ - struct wpa_driver_nl80211_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.freq.m = freq * 100000; - iwr.u.freq.e = 1; - - if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) { - perror("ioctl[SIOCSIWFREQ]"); - ret = -1; - } - - return ret; -} - - -static void -wpa_driver_nl80211_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 */ - } -} - - -static int wpa_driver_nl80211_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_nl80211_event_wireless_pmkidcand( - struct wpa_driver_nl80211_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_nl80211_event_wireless_assocreqie( - struct wpa_driver_nl80211_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_nl80211_event_wireless_assocrespie( - struct wpa_driver_nl80211_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_nl80211_event_assoc_ies(struct wpa_driver_nl80211_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_nl80211_event_wireless(struct wpa_driver_nl80211_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; - wpa_supplicant_event(ctx, EVENT_DISASSOC, - NULL); - - } else { - wpa_driver_nl80211_event_assoc_ies(drv); - wpa_supplicant_event(ctx, EVENT_ASSOC, NULL); - } - break; - case IWEVMICHAELMICFAILURE: - wpa_driver_nl80211_event_wireless_michaelmicfailure( - ctx, custom, iwe->u.data.length); - break; - case IWEVCUSTOM: - if (custom + iwe->u.data.length > end) - 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_nl80211_event_wireless_custom(ctx, buf); - os_free(buf); - break; - case IWEVASSOCREQIE: - wpa_driver_nl80211_event_wireless_assocreqie( - drv, custom, iwe->u.data.length); - break; - case IWEVASSOCRESPIE: - wpa_driver_nl80211_event_wireless_assocrespie( - drv, custom, iwe->u.data.length); - break; - case IWEVPMKIDCAND: - wpa_driver_nl80211_event_wireless_pmkidcand( - drv, custom, iwe->u.data.length); - break; - } - - pos += iwe->len; - } -} - - -static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_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_nl80211_own_ifname(struct wpa_driver_nl80211_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_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, - int ifindex, struct nlmsghdr *h) -{ - if (drv->ifindex == ifindex) - return 1; - - if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) { - drv->ifindex = if_nametoindex(drv->ifname); - wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " - "interface"); - wpa_driver_nl80211_finish_drv_init(drv); - return 1; - } - - return 0; -} - - -static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_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_nl80211_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_nl80211_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_nl80211_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_nl80211_event_wireless( - drv, ctx, ((char *) attr) + rta_len, - attr->rta_len - rta_len); - } else if (attr->rta_type == IFLA_IFNAME) { - wpa_driver_nl80211_event_link( - drv, ctx, - ((char *) attr) + rta_len, - attr->rta_len - rta_len, 0); - } - attr = RTA_NEXT(attr, attrlen); - } -} - - -static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_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_nl80211_event_link( - drv, ctx, - ((char *) attr) + rta_len, - attr->rta_len - rta_len, 1); - } - attr = RTA_NEXT(attr, attrlen); - } -} - - -static void wpa_driver_nl80211_event_receive_wext(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) - perror("recvfrom(netlink)"); - 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_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx, - h, plen); - break; - case RTM_DELLINK: - wpa_driver_nl80211_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 no_seq_check(struct nl_msg *msg, void *arg) -{ - return NL_OK; -} - - -static int process_event(struct nl_msg *msg, void *arg) -{ - struct wpa_driver_nl80211_data *drv = arg; - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct nlattr *tb[NL80211_ATTR_MAX + 1]; - - nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), NULL); - - if (tb[NL80211_ATTR_IFINDEX]) { - int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); - if (ifindex != drv->ifindex) { - wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" - " for foreign interface (ifindex %d)", - gnlh->cmd, ifindex); - return NL_SKIP; - } - } - - switch (gnlh->cmd) { - case NL80211_CMD_NEW_SCAN_RESULTS: - wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); - drv->scan_complete_events = 1; - eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, - drv->ctx); - wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL); - break; - case NL80211_CMD_SCAN_ABORTED: - wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); - /* - * Need to indicate that scan results are available in order - * not to make wpa_supplicant stop its scanning. - */ - eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, - drv->ctx); - wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL); - break; - default: - wpa_printf(MSG_DEBUG, "nl0211: Ignored unknown event (cmd=%d)", - gnlh->cmd); - break; - } - - return NL_SKIP; -} - - -static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, - void *sock_ctx) -{ - struct nl_cb *cb; - struct wpa_driver_nl80211_data *drv = eloop_ctx; - - wpa_printf(MSG_DEBUG, "nl80211: Event message available"); - - cb = nl_cb_clone(drv->nl_cb); - if (!cb) - return; - nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); - nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv); - nl_recvmsgs(drv->nl_handle, cb); - nl_cb_put(cb); -} - - -static int wpa_driver_nl80211_get_ifflags_ifname(struct wpa_driver_nl80211_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) { - perror("ioctl[SIOCGIFFLAGS]"); - return -1; - } - *flags = ifr.ifr_flags & 0xffff; - return 0; -} - - -/** - * wpa_driver_nl80211_get_ifflags - Get interface flags (SIOCGIFFLAGS) - * @drv: driver_nl80211 private data - * @flags: Pointer to returned flags value - * Returns: 0 on success, -1 on failure - */ -static int wpa_driver_nl80211_get_ifflags(struct wpa_driver_nl80211_data *drv, - int *flags) -{ - return wpa_driver_nl80211_get_ifflags_ifname(drv, drv->ifname, flags); -} - - -static int wpa_driver_nl80211_set_ifflags_ifname( - struct wpa_driver_nl80211_data *drv, - const char *ifname, int flags) -{ - struct ifreq ifr; - - os_memset(&ifr, 0, sizeof(ifr)); - os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); - ifr.ifr_flags = flags & 0xffff; - if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - perror("SIOCSIFFLAGS"); - return -1; - } - return 0; -} - - -/** - * wpa_driver_nl80211_set_ifflags - Set interface flags (SIOCSIFFLAGS) - * @drv: driver_nl80211 private data - * @flags: New value for flags - * Returns: 0 on success, -1 on failure - */ -static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv, - int flags) -{ - return wpa_driver_nl80211_set_ifflags_ifname(drv, drv->ifname, flags); -} - - -/** - * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain - * @priv: driver_nl80211 private data - * @alpha2_arg: country to which to switch to - * Returns: 0 on success, -1 on failure - * - * This asks nl80211 to set the regulatory domain for given - * country ISO / IEC alpha2. - */ -static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) -{ - struct wpa_driver_nl80211_data *drv = priv; - char alpha2[3]; - struct nl_msg *msg; - - msg = nlmsg_alloc(); - if (!msg) - goto nla_put_failure; - - alpha2[0] = alpha2_arg[0]; - alpha2[1] = alpha2_arg[1]; - alpha2[2] = '\0'; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_REQ_SET_REG, 0); - - NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); - if (send_and_recv_msgs(drv, msg, NULL, NULL)) - return -EINVAL; - return 0; -nla_put_failure: - return -EINVAL; -} - - -static int wpa_driver_nl80211_set_probe_req_ie(void *priv, const u8 *ies, - size_t ies_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct nl_msg *msg; - int ret = -1; - - msg = nlmsg_alloc(); - if (!msg) - return -ENOMEM; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, - NL80211_CMD_SET_MGMT_EXTRA_IE, 0); - - NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE, 4 /* ProbeReq */); - if (ies) - NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies); - - ret = 0; - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - return ret; - -nla_put_failure: - return -ENOBUFS; -} - - -#ifdef CONFIG_CLIENT_MLME - -static int nl80211_set_vif(struct wpa_driver_nl80211_data *drv, - int drop_unencrypted, int userspace_mlme) -{ -#ifdef NL80211_CMD_SET_VIF - struct nl_msg *msg; - int ret = -1; - - msg = nlmsg_alloc(); - if (!msg) - return -ENOMEM; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, - NL80211_CMD_SET_VIF, 0); - - if (drop_unencrypted >= 0) - NLA_PUT_U8(msg, NL80211_ATTR_VIF_DROP_UNENCRYPTED, - drop_unencrypted); - if (userspace_mlme >= 0) - NLA_PUT_U8(msg, NL80211_ATTR_VIF_USERSPACE_MLME, - userspace_mlme); - - ret = 0; - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - return ret; - -nla_put_failure: - return -ENOBUFS; -#else /* NL80211_CMD_SET_VIF */ - return -1; -#endif /* NL80211_CMD_SET_VIF */ -} - - -static int wpa_driver_nl80211_set_userspace_mlme( - struct wpa_driver_nl80211_data *drv, int enabled) -{ - return nl80211_set_vif(drv, -1, enabled); -} - - -static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, - int ifidx) -{ - struct nl_msg *msg; - - msg = nlmsg_alloc(); - if (!msg) - goto nla_put_failure; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_DEL_INTERFACE, 0); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); - if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) - return; -nla_put_failure: - wpa_printf(MSG_ERROR, "nl80211: Failed to remove interface."); -} - - -static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, - const char *ifname, enum nl80211_iftype iftype) -{ - struct nl_msg *msg, *flags = NULL; - int ifidx, err; - int ret = -ENOBUFS; - - msg = nlmsg_alloc(); - if (!msg) - return -1; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_NEW_INTERFACE, 0); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname)); - NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); - NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); - - if (iftype == NL80211_IFTYPE_MONITOR) { - flags = nlmsg_alloc(); - if (!flags) - goto nla_put_failure; - - NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); - - err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); - - nlmsg_free(flags); - - if (err) - goto nla_put_failure; - } - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - if (ret) { - nla_put_failure: - wpa_printf(MSG_ERROR, "nl80211: Failed to create interface %d", - ret); - return ret; - } - - ifidx = if_nametoindex(ifname); - if (ifidx <= 0) - return -1; - - return ifidx; -} - - -static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) -{ - struct wpa_driver_nl80211_data *drv = eloop_ctx; - int len; - unsigned char buf[3000]; - struct ieee80211_radiotap_iterator iter; - int ret; - int injected = 0, failed = 0, rxflags = 0; - struct ieee80211_rx_status rx_status; - - len = recv(sock, buf, sizeof(buf), 0); - if (len < 0) { - perror("recv"); - return; - } - - if (ieee80211_radiotap_iterator_init(&iter, (void *) buf, len)) { - wpa_printf(MSG_DEBUG, "nl80211: received invalid radiotap " - "frame"); - return; - } - - os_memset(&rx_status, 0, sizeof(rx_status)); - - while (1) { - ret = ieee80211_radiotap_iterator_next(&iter); - if (ret == -ENOENT) - break; - if (ret) { - wpa_printf(MSG_DEBUG, "nl80211: received invalid " - "radiotap frame (%d)", ret); - return; - } - switch (iter.this_arg_index) { - case IEEE80211_RADIOTAP_FLAGS: - if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) - len -= 4; - break; - case IEEE80211_RADIOTAP_RX_FLAGS: - rxflags = 1; - break; - case IEEE80211_RADIOTAP_TX_FLAGS: - injected = 1; - failed = le_to_host16((*(u16 *) iter.this_arg)) & - IEEE80211_RADIOTAP_F_TX_FAIL; - break; - case IEEE80211_RADIOTAP_DATA_RETRIES: - break; - case IEEE80211_RADIOTAP_CHANNEL: - /* TODO convert from freq/flags to channel number - * rx_status.channel = XXX; - */ - break; - case IEEE80211_RADIOTAP_RATE: - break; - case IEEE80211_RADIOTAP_DB_ANTSIGNAL: - rx_status.ssi = *iter.this_arg; - break; - } - } - - if (rxflags && injected) - return; - - if (!injected) { - wpa_supplicant_sta_rx(drv->ctx, buf + iter.max_length, - len - iter.max_length, &rx_status); - } else if (failed) { - /* TX failure callback */ - } else { - /* TX success (ACK) callback */ - } -} - - -static int wpa_driver_nl80211_create_monitor_interface( - struct wpa_driver_nl80211_data *drv) -{ - char buf[IFNAMSIZ]; - struct sockaddr_ll ll; - int optval, flags; - socklen_t optlen; - - os_snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname); - buf[IFNAMSIZ - 1] = '\0'; - - drv->monitor_ifidx = - nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR); - - if (drv->monitor_ifidx < 0) - return -1; - - if (wpa_driver_nl80211_get_ifflags_ifname(drv, buf, &flags) != 0 || - wpa_driver_nl80211_set_ifflags_ifname(drv, buf, flags | IFF_UP) != - 0) { - wpa_printf(MSG_ERROR, "nl80211: Could not set interface '%s' " - "UP", buf); - goto error; - } - - os_memset(&ll, 0, sizeof(ll)); - ll.sll_family = AF_PACKET; - ll.sll_ifindex = drv->monitor_ifidx; - drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); - if (drv->monitor_sock < 0) { - perror("socket[PF_PACKET,SOCK_RAW]"); - goto error; - } - - if (bind(drv->monitor_sock, (struct sockaddr *) &ll, - sizeof(ll)) < 0) { - perror("monitor socket bind"); - goto error; - } - - optlen = sizeof(optval); - optval = 20; - if (setsockopt - (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { - perror("Failed to set socket priority"); - goto error; - } - - if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, - drv, NULL)) { - wpa_printf(MSG_ERROR, "nl80211: Could not register monitor " - "read socket"); - goto error; - } - - return 0; - - error: - nl80211_remove_iface(drv, drv->monitor_ifidx); - return -1; -} - -#endif /* CONFIG_CLIENT_MLME */ - - -/** - * wpa_driver_nl80211_init - Initialize nl80211 driver interface - * @ctx: context to be used when calling wpa_supplicant functions, - * e.g., wpa_supplicant_event() - * @ifname: interface name, e.g., wlan0 - * Returns: Pointer to private data, %NULL on failure - */ -static void * wpa_driver_nl80211_init(void *ctx, const char *ifname) -{ - int s, ret; - struct sockaddr_nl local; - struct wpa_driver_nl80211_data *drv; - - drv = os_zalloc(sizeof(*drv)); - if (drv == NULL) - return NULL; - drv->ctx = ctx; - os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); - - drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); - if (drv->nl_cb == NULL) { - wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " - "callbacks"); - goto err1; - } - - drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb); - if (drv->nl_handle == NULL) { - wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " - "callbacks"); - goto err2; - } - - if (genl_connect(drv->nl_handle)) { - wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " - "netlink"); - goto err3; - } - - drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle); - if (drv->nl_cache == NULL) { - wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " - "netlink cache"); - goto err3; - } - - drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211"); - if (drv->nl80211 == NULL) { - wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " - "found"); - goto err4; - } - - ret = nl_get_multicast_id(drv, "nl80211", "scan"); - if (ret >= 0) - ret = nl_socket_add_membership(drv->nl_handle, ret); - if (ret < 0) { - wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " - "membership for scan events: %d (%s)", - ret, strerror(-ret)); - goto err4; - } - eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle), - wpa_driver_nl80211_event_receive, drv, ctx); - - drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); - if (drv->ioctl_sock < 0) { - perror("socket(PF_INET,SOCK_DGRAM)"); - goto err5; - } - - s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); - if (s < 0) { - perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)"); - goto err6; - } - - os_memset(&local, 0, sizeof(local)); - local.nl_family = AF_NETLINK; - local.nl_groups = RTMGRP_LINK; - if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) { - perror("bind(netlink)"); - close(s); - goto err6; - } - - eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_wext, drv, - ctx); - drv->wext_event_sock = s; - - wpa_driver_nl80211_finish_drv_init(drv); - - return drv; - -err6: - close(drv->ioctl_sock); -err5: - genl_family_put(drv->nl80211); -err4: - nl_cache_free(drv->nl_cache); -err3: - nl_handle_destroy(drv->nl_handle); -err2: - nl_cb_put(drv->nl_cb); -err1: - os_free(drv); - return NULL; -} - - -static void -wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) -{ - int flags; - - if (wpa_driver_nl80211_get_ifflags(drv, &flags) != 0) - printf("Could not get interface '%s' flags\n", drv->ifname); - else if (!(flags & IFF_UP)) { - if (wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP) != 0) { - printf("Could not set interface '%s' UP\n", - drv->ifname); - } - } - - /* - * Make sure that the driver does not have any obsolete PMKID entries. - */ - wpa_driver_nl80211_flush_pmkid(drv); - - if (wpa_driver_nl80211_set_mode(drv, 0) < 0) { - printf("Could not configure driver to use managed mode\n"); - } - - wpa_driver_nl80211_get_range(drv); - - drv->ifindex = if_nametoindex(drv->ifname); - - wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT); -} - - -/** - * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface - * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() - * - * Shut down driver interface and processing of driver events. Free - * private data buffer if one was allocated in wpa_driver_nl80211_init(). - */ -static void wpa_driver_nl80211_deinit(void *priv) -{ - struct wpa_driver_nl80211_data *drv = priv; - int flags; - -#ifdef CONFIG_CLIENT_MLME - if (drv->monitor_sock >= 0) { - eloop_unregister_read_sock(drv->monitor_sock); - close(drv->monitor_sock); - } - if (drv->monitor_ifidx > 0) - nl80211_remove_iface(drv, drv->monitor_ifidx); - if (drv->capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) - wpa_driver_nl80211_set_userspace_mlme(drv, 0); -#endif /* CONFIG_CLIENT_MLME */ - - eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); - - /* - * Clear possibly configured driver parameters in order to make it - * easier to use the driver after wpa_supplicant has been terminated. - */ - (void) wpa_driver_nl80211_set_bssid(drv, - (u8 *) "\x00\x00\x00\x00\x00\x00"); - - wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP); - - eloop_unregister_read_sock(drv->wext_event_sock); - - if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) - (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP); - - close(drv->wext_event_sock); - close(drv->ioctl_sock); - os_free(drv->assoc_req_ies); - os_free(drv->assoc_resp_ies); - - eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle)); - genl_family_put(drv->nl80211); - nl_cache_free(drv->nl_cache); - nl_handle_destroy(drv->nl_handle); - nl_cb_put(drv->nl_cb); - - os_free(drv); -} - - -/** - * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion - * @eloop_ctx: Unused - * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() - * - * This function can be used as registered timeout when starting a scan to - * generate a scan completed event if the driver does not report this. - */ -static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) -{ - wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); - wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); -} - - -/** - * wpa_driver_nl80211_scan - Request the driver to initiate scan - * @priv: Pointer to private wext data from wpa_driver_nl80211_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 - */ -static int wpa_driver_nl80211_scan(void *priv, const u8 *ssid, size_t ssid_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - int ret = 0, timeout; - struct nl_msg *msg, *ssids; - - msg = nlmsg_alloc(); - ssids = nlmsg_alloc(); - if (!msg || !ssids) { - nlmsg_free(msg); - nlmsg_free(ssids); - return -1; - } - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, - NL80211_CMD_TRIGGER_SCAN, 0); - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - if (ssid && ssid_len) { - /* Request an active scan for a specific SSID */ - NLA_PUT(ssids, 1, ssid_len, ssid); - } else { - /* Request an active scan for wildcard SSID */ - NLA_PUT(ssids, 1, 0, ""); - } - nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - msg = NULL; - if (ret) { - wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " - "(%s)", ret, strerror(-ret)); - goto nla_put_failure; - } - - /* Not all drivers generate "scan completed" wireless event, so try to - * read results after a timeout. */ - timeout = 10; - 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 (ret=%d) - scan timeout %d " - "seconds", ret, timeout); - eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); - eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, - drv, drv->ctx); - -nla_put_failure: - nlmsg_free(ssids); - nlmsg_free(msg); - return ret; -} - - -static int bss_info_handler(struct nl_msg *msg, void *arg) -{ - struct nlattr *tb[NL80211_ATTR_MAX + 1]; - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct nlattr *bss[NL80211_BSS_MAX + 1]; - static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { - [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, - [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, - [NL80211_BSS_TSF] = { .type = NLA_U64 }, - [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, - [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, - [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, - [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, - [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, - }; - struct wpa_scan_results *res = arg; - struct wpa_scan_res **tmp; - struct wpa_scan_res *r; - const u8 *ie; - size_t ie_len; - - nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), NULL); - if (!tb[NL80211_ATTR_BSS]) - return NL_SKIP; - if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], - bss_policy)) - return NL_SKIP; - if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { - ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); - ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); - } else { - ie = NULL; - ie_len = 0; - } - - r = os_zalloc(sizeof(*r) + ie_len); - if (r == NULL) - return NL_SKIP; - if (bss[NL80211_BSS_BSSID]) - os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), - ETH_ALEN); - if (bss[NL80211_BSS_FREQUENCY]) - r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); - if (bss[NL80211_BSS_BEACON_INTERVAL]) - r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); - if (bss[NL80211_BSS_CAPABILITY]) - r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); - if (bss[NL80211_BSS_SIGNAL_UNSPEC]) - r->qual = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); - if (bss[NL80211_BSS_SIGNAL_MBM]) - r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); - if (bss[NL80211_BSS_TSF]) - r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); - r->ie_len = ie_len; - if (ie) - os_memcpy(r + 1, ie, ie_len); - - tmp = os_realloc(res->res, - (res->num + 1) * sizeof(struct wpa_scan_res *)); - if (tmp == NULL) { - os_free(r); - return NL_SKIP; - } - tmp[res->num++] = r; - res->res = tmp; - - return NL_SKIP; -} - - -/** - * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results - * @priv: Pointer to private wext data from wpa_driver_nl80211_init() - * Returns: Scan results on success, -1 on failure - */ -static struct wpa_scan_results * -wpa_driver_nl80211_get_scan_results(void *priv) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct nl_msg *msg; - struct wpa_scan_results *res; - int ret; - - res = os_zalloc(sizeof(*res)); - if (res == NULL) - return 0; - msg = nlmsg_alloc(); - if (!msg) - goto nla_put_failure; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP, - NL80211_CMD_GET_SCAN, 0); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - ret = send_and_recv_msgs(drv, msg, bss_info_handler, res); - msg = NULL; - if (ret == 0) { - wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)", - (unsigned long) res->num); - return res; - } - wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " - "(%s)", ret, strerror(-ret)); -nla_put_failure: - nlmsg_free(msg); - wpa_scan_results_free(res); - return NULL; -} - - -static int wpa_driver_nl80211_get_range(void *priv) -{ - struct wpa_driver_nl80211_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) { - perror("ioctl[SIOCGIWRANGE]"); - 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; - wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x", - drv->capa.key_mgmt, drv->capa.enc); - } else { - wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - " - "assuming WPA is not supported"); - } - - os_free(range); - return 0; -} - - -static int wpa_driver_nl80211_set_wpa(void *priv, int enabled) -{ - struct wpa_driver_nl80211_data *drv = priv; - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - - return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_WPA_ENABLED, - enabled); -} - - -static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg, - const u8 *addr, int key_idx, - int set_tx, const u8 *seq, - size_t seq_len, - const u8 *key, size_t key_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - int err; - struct nl_msg *msg; - - wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d " - "seq_len=%lu key_len=%lu", - __func__, alg, addr, key_idx, set_tx, - (unsigned long) seq_len, (unsigned long) key_len); - - msg = nlmsg_alloc(); - if (msg == NULL) - return -1; - - if (alg == WPA_ALG_NONE) { - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, - NL80211_CMD_DEL_KEY, 0); - } else { - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, - NL80211_CMD_NEW_KEY, 0); - NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); - switch (alg) { - case WPA_ALG_WEP: - if (key_len == 5) - NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, - 0x000FAC01); - else - NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, - 0x000FAC05); - break; - case WPA_ALG_TKIP: - NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02); - break; - case WPA_ALG_CCMP: - NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04); - break; - default: - nlmsg_free(msg); - return -1; - } - } - - if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) - { - wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); - NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); - } - NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - err = send_and_recv_msgs(drv, msg, NULL, NULL); - if (err) { - wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d", err); - return -1; - } - - if (set_tx && alg != WPA_ALG_NONE) { - msg = nlmsg_alloc(); - if (msg == NULL) - return -1; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_SET_KEY, 0); - NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); - - err = send_and_recv_msgs(drv, msg, NULL, NULL); - if (err) { - wpa_printf(MSG_DEBUG, "nl80211: set default key " - "failed; err=%d", err); - return -1; - } - } - - return 0; - -nla_put_failure: - return -ENOBUFS; -} - - -static int wpa_driver_nl80211_set_countermeasures(void *priv, - int enabled) -{ - struct wpa_driver_nl80211_data *drv = priv; - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - return wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_TKIP_COUNTERMEASURES, - enabled); -} - - -static int wpa_driver_nl80211_set_drop_unencrypted(void *priv, - int enabled) -{ - struct wpa_driver_nl80211_data *drv = priv; - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - drv->use_crypt = enabled; - return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, - enabled); -} - - -static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_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) { - perror("ioctl[SIOCSIWMLME]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, - int reason_code) -{ - struct wpa_driver_nl80211_data *drv = priv; - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - return wpa_driver_nl80211_mlme(drv, addr, IW_MLME_DEAUTH, reason_code); -} - - -static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, - int reason_code) -{ - struct wpa_driver_nl80211_data *drv = priv; - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - return wpa_driver_nl80211_mlme(drv, addr, IW_MLME_DISASSOC, - reason_code); -} - - -static int wpa_driver_nl80211_set_gen_ie(void *priv, const u8 *ie, - size_t ie_len) -{ - struct wpa_driver_nl80211_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) { - perror("ioctl[SIOCSIWGENIE]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_cipher2wext(int cipher) -{ - switch (cipher) { - case CIPHER_NONE: - return IW_AUTH_CIPHER_NONE; - case CIPHER_WEP40: - return IW_AUTH_CIPHER_WEP40; - case CIPHER_TKIP: - return IW_AUTH_CIPHER_TKIP; - case CIPHER_CCMP: - return IW_AUTH_CIPHER_CCMP; - case CIPHER_WEP104: - return IW_AUTH_CIPHER_WEP104; - default: - return 0; - } -} - - -static int wpa_driver_nl80211_keymgmt2wext(int keymgmt) -{ - switch (keymgmt) { - case KEY_MGMT_802_1X: - case KEY_MGMT_802_1X_NO_WPA: - return IW_AUTH_KEY_MGMT_802_1X; - case KEY_MGMT_PSK: - return IW_AUTH_KEY_MGMT_PSK; - default: - return 0; - } -} - - -static int -wpa_driver_nl80211_auth_alg_fallback(struct wpa_driver_nl80211_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) { - perror("ioctl[SIOCSIWENCODE]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_associate( - void *priv, struct wpa_driver_associate_params *params) -{ - struct wpa_driver_nl80211_data *drv = priv; - int ret = 0; - int allow_unencrypted_eapol; - int value; - - wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); - - /* - * If the driver did not support SIOCSIWAUTH, fallback to - * SIOCSIWENCODE here. - */ - if (drv->auth_alg_fallback && - wpa_driver_nl80211_auth_alg_fallback(drv, params) < 0) - ret = -1; - - if (!params->bssid && - wpa_driver_nl80211_set_bssid(drv, NULL) < 0) - ret = -1; - - /* TODO: should consider getting wpa version and cipher/key_mgmt suites - * from configuration, not from here, where only the selected suite is - * available */ - if (wpa_driver_nl80211_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len) - < 0) - ret = -1; - if (params->wpa_ie == NULL || params->wpa_ie_len == 0) - value = IW_AUTH_WPA_VERSION_DISABLED; - else if (params->wpa_ie[0] == WLAN_EID_RSN) - value = IW_AUTH_WPA_VERSION_WPA2; - else - value = IW_AUTH_WPA_VERSION_WPA; - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_WPA_VERSION, value) < 0) - ret = -1; - value = wpa_driver_nl80211_cipher2wext(params->pairwise_suite); - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_CIPHER_PAIRWISE, value) < 0) - ret = -1; - value = wpa_driver_nl80211_cipher2wext(params->group_suite); - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_CIPHER_GROUP, value) < 0) - ret = -1; - value = wpa_driver_nl80211_keymgmt2wext(params->key_mgmt_suite); - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_KEY_MGMT, value) < 0) - ret = -1; - value = params->key_mgmt_suite != KEY_MGMT_NONE || - params->pairwise_suite != CIPHER_NONE || - params->group_suite != CIPHER_NONE || - params->wpa_ie_len; - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_PRIVACY_INVOKED, value) < 0) - ret = -1; - - /* Allow unencrypted EAPOL messages even if pairwise keys are set when - * not using WPA. IEEE 802.1X specifies that these frames are not - * encrypted, but WPA encrypts them when pairwise keys are in use. */ - if (params->key_mgmt_suite == KEY_MGMT_802_1X || - params->key_mgmt_suite == KEY_MGMT_PSK) - allow_unencrypted_eapol = 0; - else - allow_unencrypted_eapol = 1; - - if (wpa_driver_nl80211_set_auth_param(drv, - IW_AUTH_RX_UNENCRYPTED_EAPOL, - allow_unencrypted_eapol) < 0) - ret = -1; - if (params->freq && wpa_driver_nl80211_set_freq(drv, params->freq) < 0) - ret = -1; - if (wpa_driver_nl80211_set_ssid(drv, params->ssid, params->ssid_len) < 0) - ret = -1; - if (params->bssid && - wpa_driver_nl80211_set_bssid(drv, params->bssid) < 0) - ret = -1; - - return ret; -} - - -static int wpa_driver_nl80211_set_auth_alg(void *priv, int auth_alg) -{ - struct wpa_driver_nl80211_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_nl80211_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG, - algs); - drv->auth_alg_fallback = res == -2; - return res; -} - - -/** - * wpa_driver_nl80211_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE - * @priv: Pointer to private wext data from wpa_driver_nl80211_init() - * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS - * Returns: 0 on success, -1 on failure - */ -static int wpa_driver_nl80211_set_mode(void *priv, int mode) -{ - struct wpa_driver_nl80211_data *drv = priv; - int ret = -1, flags; - struct nl_msg *msg; - - msg = nlmsg_alloc(); - if (!msg) - return -1; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_SET_INTERFACE, 0); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, - mode ? NL80211_IFTYPE_ADHOC : NL80211_IFTYPE_STATION); - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - if (!ret) - return 0; - else - goto try_again; - -nla_put_failure: - wpa_printf(MSG_ERROR, "nl80211: Failed to set interface mode"); - return -1; - -try_again: - /* mac80211 doesn't allow mode changes while the device is up, so - * take the device down, try to set the mode again, and bring the - * device back up. - */ - if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) { - (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP); - - /* Try to set the mode again while the interface is down */ - msg = nlmsg_alloc(); - if (!msg) - return -1; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_SET_INTERFACE, 0); - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, - mode ? NL80211_IFTYPE_ADHOC : - NL80211_IFTYPE_STATION); - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - if (ret) { - wpa_printf(MSG_ERROR, "Failed to set interface %s " - "mode", drv->ifname); - } - - /* Ignore return value of get_ifflags to ensure that the device - * is always up like it was before this function was called. - */ - (void) wpa_driver_nl80211_get_ifflags(drv, &flags); - (void) wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP); - } - - return ret; -} - - -static int wpa_driver_nl80211_pmksa(struct wpa_driver_nl80211_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) - perror("ioctl[SIOCSIWPMKSA]"); - ret = -1; - } - - return ret; -} - - -static int wpa_driver_nl80211_add_pmkid(void *priv, const u8 *bssid, - const u8 *pmkid) -{ - struct wpa_driver_nl80211_data *drv = priv; - return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid); -} - - -static int wpa_driver_nl80211_remove_pmkid(void *priv, const u8 *bssid, - const u8 *pmkid) -{ - struct wpa_driver_nl80211_data *drv = priv; - return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid); -} - - -static int wpa_driver_nl80211_flush_pmkid(void *priv) -{ - struct wpa_driver_nl80211_data *drv = priv; - return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL); -} - - -static int wpa_driver_nl80211_get_capa(void *priv, - struct wpa_driver_capa *capa) -{ - struct wpa_driver_nl80211_data *drv = priv; - if (!drv->has_capability) - return -1; - os_memcpy(capa, &drv->capa, sizeof(*capa)); - return 0; -} - - -static int wpa_driver_nl80211_set_operstate(void *priv, int state) -{ - struct wpa_driver_nl80211_data *drv = priv; - - wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", - __func__, drv->operstate, state, state ? "UP" : "DORMANT"); - drv->operstate = state; - return wpa_driver_nl80211_send_oper_ifla( - drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT); -} - - -#ifdef CONFIG_CLIENT_MLME -static int wpa_driver_nl80211_open_mlme(struct wpa_driver_nl80211_data *drv) -{ - if (wpa_driver_nl80211_set_userspace_mlme(drv, 1) < 0) { - wpa_printf(MSG_ERROR, "nl80211: Failed to enable userspace " - "MLME"); - return -1; - } - if (wpa_driver_nl80211_create_monitor_interface(drv)) { - wpa_printf(MSG_ERROR, "nl80211: Failed to create monitor " - "interface"); - return -1; - } - return 0; -} -#endif /* CONFIG_CLIENT_MLME */ - - -static int wpa_driver_nl80211_set_param(void *priv, const char *param) -{ -#ifdef CONFIG_CLIENT_MLME - struct wpa_driver_nl80211_data *drv = priv; - - if (param == NULL) - return 0; - - wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param); - - if (os_strstr(param, "use_mlme=1")) { - wpa_printf(MSG_DEBUG, "nl80211: Using user space MLME"); - drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME; - - if (wpa_driver_nl80211_open_mlme(drv)) - return -1; - } -#endif /* CONFIG_CLIENT_MLME */ - - return 0; -} - - -#ifdef CONFIG_CLIENT_MLME - -struct phy_info_arg { - u16 *num_modes; - struct wpa_hw_modes *modes; -}; - - -static int phy_info_handler(struct nl_msg *msg, void *arg) -{ - struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - struct phy_info_arg *phy_info = arg; - - struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; - - struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; - static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] - = { - [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, - [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, - }; - - struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; - static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { - [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, - [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = - { .type = NLA_FLAG }, - }; - - struct nlattr *nl_band; - struct nlattr *nl_freq; - struct nlattr *nl_rate; - int rem_band, rem_freq, rem_rate; - struct wpa_hw_modes *mode; - int idx, mode_is_set; - - nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), NULL); - - if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) - return NL_SKIP; - - nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], - rem_band) { - mode = os_realloc(phy_info->modes, - (*phy_info->num_modes + 1) * sizeof(*mode)); - if (!mode) - return NL_SKIP; - phy_info->modes = mode; - - mode_is_set = 0; - - mode = &phy_info->modes[*(phy_info->num_modes)]; - os_memset(mode, 0, sizeof(*mode)); - *(phy_info->num_modes) += 1; - - nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), - nla_len(nl_band), NULL); - - nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], - rem_freq) { - nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, - nla_data(nl_freq), nla_len(nl_freq), - freq_policy); - if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) - continue; - mode->num_channels++; - } - - mode->channels = os_zalloc(mode->num_channels * - sizeof(struct wpa_channel_data)); - if (!mode->channels) - return NL_SKIP; - - idx = 0; - - nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], - rem_freq) { - nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, - nla_data(nl_freq), nla_len(nl_freq), - freq_policy); - if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) - continue; - - mode->channels[idx].freq = nla_get_u32( - tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); - mode->channels[idx].flag |= WPA_CHAN_W_SCAN | - WPA_CHAN_W_ACTIVE_SCAN | - WPA_CHAN_W_IBSS; - - if (!mode_is_set) { - /* crude heuristic */ - if (mode->channels[idx].freq < 4000) - mode->mode = WPA_MODE_IEEE80211B; - else - mode->mode = WPA_MODE_IEEE80211A; - mode_is_set = 1; - } - - /* crude heuristic */ - if (mode->channels[idx].freq < 4000) { - if (mode->channels[idx].freq == 2848) - mode->channels[idx].chan = 14; - else - mode->channels[idx].chan = - (mode->channels[idx].freq - - 2407) / 5; - } else - mode->channels[idx].chan = - mode->channels[idx].freq / 5 - 1000; - - if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) - mode->channels[idx].flag &= ~WPA_CHAN_W_SCAN; - if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) - mode->channels[idx].flag &= - ~WPA_CHAN_W_ACTIVE_SCAN; - if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) - mode->channels[idx].flag &= ~WPA_CHAN_W_IBSS; - idx++; - } - - nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], - rem_rate) { - nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, - nla_data(nl_rate), nla_len(nl_rate), - rate_policy); - if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) - continue; - mode->num_rates++; - } - - mode->rates = os_zalloc(mode->num_rates * - sizeof(struct wpa_rate_data)); - if (!mode->rates) - return NL_SKIP; - - idx = 0; - - nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], - rem_rate) { - nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, - nla_data(nl_rate), nla_len(nl_rate), - rate_policy); - if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) - continue; - mode->rates[idx].rate = nla_get_u32( - tb_rate[NL80211_BITRATE_ATTR_RATE]); - - /* crude heuristic */ - if (mode->mode == WPA_MODE_IEEE80211B && - mode->rates[idx].rate > 200) - mode->mode = WPA_MODE_IEEE80211G; - - if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE]) - mode->rates[idx].flags |= WPA_RATE_PREAMBLE2; - - idx++; - } - } - - return NL_SKIP; -} - - -static struct wpa_hw_modes * -wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct nl_msg *msg; - struct phy_info_arg result = { - .num_modes = num_modes, - .modes = NULL, - }; - - *num_modes = 0; - *flags = 0; - - msg = nlmsg_alloc(); - if (!msg) - return NULL; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_GET_WIPHY, 0); - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - - if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) - return result.modes; -nla_put_failure: - return NULL; -} - - -static int wpa_driver_nl80211_set_channel(void *priv, wpa_hw_mode phymode, - int chan, int freq) -{ - return wpa_driver_nl80211_set_freq(priv, freq); -} - - -static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, - size_t data_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - __u8 rtap_hdr[] = { - 0x00, 0x00, /* radiotap version */ - 0x0e, 0x00, /* radiotap length */ - 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ - 0x0c, /* F_WEP | F_FRAG (encrypt/fragment if required) */ - 0x00, /* padding */ - 0x00, 0x00, /* RX and TX flags to indicate that */ - 0x00, 0x00, /* this is the injected frame directly */ - }; - struct iovec iov[2] = { - { - .iov_base = &rtap_hdr, - .iov_len = sizeof(rtap_hdr), - }, - { - .iov_base = (void *) data, - .iov_len = data_len, - } - }; - struct msghdr msg = { - .msg_name = NULL, - .msg_namelen = 0, - .msg_iov = iov, - .msg_iovlen = 2, - .msg_control = NULL, - .msg_controllen = 0, - .msg_flags = 0, - }; - - if (sendmsg(drv->monitor_sock, &msg, 0) < 0) { - perror("send[MLME]"); - return -1; - } - - return 0; -} - - -static int wpa_driver_nl80211_mlme_add_sta(void *priv, const u8 *addr, - const u8 *supp_rates, - size_t supp_rates_len) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct nl_msg *msg; - int ret = -1; - - msg = nlmsg_alloc(); - if (!msg) - return -ENOMEM; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_NEW_STATION, 0); - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); - /* TODO: Get proper Association ID and listen interval */ - NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1); - NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, supp_rates_len, - supp_rates); - NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 1); - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - /* ignore EEXIST, this happens if a STA associates while associated */ - if (ret == -EEXIST || ret >= 0) - ret = 0; - -nla_put_failure: - return ret; -} - - -static int wpa_driver_nl80211_mlme_remove_sta(void *priv, const u8 *addr) -{ - struct wpa_driver_nl80211_data *drv = priv; - struct nl_msg *msg; - int ret = -1; - - msg = nlmsg_alloc(); - if (!msg) - return -ENOMEM; - - genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, - 0, NL80211_CMD_DEL_STATION, 0); - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); - NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); - - ret = 0; - - ret = send_and_recv_msgs(drv, msg, NULL, NULL); - return ret; - -nla_put_failure: - return -ENOBUFS; -} - -#endif /* CONFIG_CLIENT_MLME */ - - -const struct wpa_driver_ops wpa_driver_nl80211_ops = { - .name = "nl80211", - .desc = "Linux nl80211/cfg80211", - .get_bssid = wpa_driver_nl80211_get_bssid, - .get_ssid = wpa_driver_nl80211_get_ssid, - .set_wpa = wpa_driver_nl80211_set_wpa, - .set_key = wpa_driver_nl80211_set_key, - .set_countermeasures = wpa_driver_nl80211_set_countermeasures, - .set_drop_unencrypted = wpa_driver_nl80211_set_drop_unencrypted, - .scan = wpa_driver_nl80211_scan, - .get_scan_results2 = wpa_driver_nl80211_get_scan_results, - .deauthenticate = wpa_driver_nl80211_deauthenticate, - .disassociate = wpa_driver_nl80211_disassociate, - .set_mode = wpa_driver_nl80211_set_mode, - .associate = wpa_driver_nl80211_associate, - .set_auth_alg = wpa_driver_nl80211_set_auth_alg, - .init = wpa_driver_nl80211_init, - .deinit = wpa_driver_nl80211_deinit, - .set_param = wpa_driver_nl80211_set_param, - .add_pmkid = wpa_driver_nl80211_add_pmkid, - .remove_pmkid = wpa_driver_nl80211_remove_pmkid, - .flush_pmkid = wpa_driver_nl80211_flush_pmkid, - .get_capa = wpa_driver_nl80211_get_capa, - .set_operstate = wpa_driver_nl80211_set_operstate, - .set_country = wpa_driver_nl80211_set_country, - .set_probe_req_ie = wpa_driver_nl80211_set_probe_req_ie, -#ifdef CONFIG_CLIENT_MLME - .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, - .set_channel = wpa_driver_nl80211_set_channel, - .set_ssid = wpa_driver_nl80211_set_ssid, - .set_bssid = wpa_driver_nl80211_set_bssid, - .send_mlme = wpa_driver_nl80211_send_mlme, - .mlme_add_sta = wpa_driver_nl80211_mlme_add_sta, - .mlme_remove_sta = wpa_driver_nl80211_mlme_remove_sta, -#endif /* CONFIG_CLIENT_MLME */ -}; |
