driver_bsd.c: Reduce code duplication (setkey)
This patch reduces code duplication between hostapd and wpa_supplicant for IEEE80211_IOC_WPAKEY.
This commit is contained in:
Masashi Honma
Jouni Malinen
parent
60bc30333c
commit
719196b159
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@ -252,6 +252,66 @@ bsd_ctrl_iface(int s, const char *ifname, int enable)
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return 0;
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}
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static int
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bsd_set_key(int s, const char *ifname, enum wpa_alg alg,
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const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
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size_t seq_len, const u8 *key, size_t key_len)
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{
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struct ieee80211req_key wk;
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wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
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"seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
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set_tx, seq_len, key_len);
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os_memset(&wk, 0, sizeof(wk));
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switch (alg) {
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case WPA_ALG_WEP:
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wk.ik_type = IEEE80211_CIPHER_WEP;
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break;
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case WPA_ALG_TKIP:
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wk.ik_type = IEEE80211_CIPHER_TKIP;
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break;
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case WPA_ALG_CCMP:
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wk.ik_type = IEEE80211_CIPHER_AES_CCM;
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break;
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default:
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wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
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return -1;
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}
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wk.ik_flags = IEEE80211_KEY_RECV;
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if (set_tx)
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wk.ik_flags |= IEEE80211_KEY_XMIT;
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if (addr == NULL) {
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os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
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wk.ik_keyix = key_idx;
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} else {
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os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
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/*
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* Deduce whether group/global or unicast key by checking
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* the address (yech). Note also that we can only mark global
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* keys default; doing this for a unicast key is an error.
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*/
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if (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
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IEEE80211_ADDR_LEN) == 0) {
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wk.ik_flags |= IEEE80211_KEY_GROUP;
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wk.ik_keyix = key_idx;
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} else {
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wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
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key_idx;
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}
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}
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if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
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wk.ik_flags |= IEEE80211_KEY_DEFAULT;
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wk.ik_keylen = key_len;
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os_memcpy(&wk.ik_keyrsc, seq, seq_len);
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os_memcpy(wk.ik_keydata, key, key_len);
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return bsd_set80211var(s, ifname, IEEE80211_IOC_WPAKEY, &wk,
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sizeof(wk));
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}
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#ifdef HOSTAPD
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@ -277,12 +337,6 @@ struct bsd_driver_data {
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static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
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int reason_code);
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static int
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set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
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{
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return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
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}
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static int
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get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
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{
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@ -464,52 +518,17 @@ bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
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}
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static int
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bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
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hostapd_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
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const u8 *addr, int key_idx, int set_tx, const u8 *seq,
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size_t seq_len, const u8 *key, size_t key_len)
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{
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struct bsd_driver_data *drv = priv;
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struct ieee80211req_key wk;
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u_int8_t cipher;
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if (alg == WPA_ALG_NONE)
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return bsd_del_key(drv->ioctl_sock, drv->iface, addr, key_idx);
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wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
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__func__, alg, ether_sprintf(addr), key_idx);
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if (alg == WPA_ALG_WEP)
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cipher = IEEE80211_CIPHER_WEP;
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else if (alg == WPA_ALG_TKIP)
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cipher = IEEE80211_CIPHER_TKIP;
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else if (alg == WPA_ALG_CCMP)
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cipher = IEEE80211_CIPHER_AES_CCM;
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else {
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printf("%s: unknown/unsupported algorithm %d\n",
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__func__, alg);
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return -1;
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}
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if (key_len > sizeof(wk.ik_keydata)) {
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printf("%s: key length %d too big\n", __func__, (int) key_len);
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return -3;
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}
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memset(&wk, 0, sizeof(wk));
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wk.ik_type = cipher;
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wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
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if (addr == NULL) {
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memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
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wk.ik_keyix = key_idx;
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wk.ik_flags |= IEEE80211_KEY_DEFAULT;
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} else {
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memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
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wk.ik_keyix = IEEE80211_KEYIX_NONE;
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}
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wk.ik_keylen = key_len;
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memcpy(wk.ik_keydata, key, key_len);
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return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
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return bsd_set_key(drv->ioctl_sock, drv->iface, alg, addr, key_idx,
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set_tx, seq, seq_len, key, key_len);
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}
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@ -898,7 +917,7 @@ const struct wpa_driver_ops wpa_driver_bsd_ops = {
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.hapd_deinit = bsd_deinit,
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.set_ieee8021x = bsd_set_ieee8021x,
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.set_privacy = bsd_set_privacy,
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.set_key = bsd_set_key,
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.set_key = hostapd_bsd_set_key,
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.get_seqnum = bsd_get_seqnum,
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.flush = bsd_flush,
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.set_generic_elem = bsd_set_opt_ie,
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@ -1051,77 +1070,20 @@ wpa_driver_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
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const u8 *key, size_t key_len)
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{
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struct wpa_driver_bsd_data *drv = priv;
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struct ieee80211req_key wk;
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struct ether_addr ea;
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char *alg_name;
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u_int8_t cipher;
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if (alg == WPA_ALG_NONE)
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return bsd_del_key(drv->sock, drv->ifname,
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os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
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IEEE80211_ADDR_LEN) == 0 ? NULL : addr,
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key_idx);
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switch (alg) {
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case WPA_ALG_WEP:
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alg_name = "WEP";
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cipher = IEEE80211_CIPHER_WEP;
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break;
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case WPA_ALG_TKIP:
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alg_name = "TKIP";
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cipher = IEEE80211_CIPHER_TKIP;
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break;
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case WPA_ALG_CCMP:
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alg_name = "CCMP";
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cipher = IEEE80211_CIPHER_AES_CCM;
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break;
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default:
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wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
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__func__, alg);
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return -1;
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if (alg == WPA_ALG_NONE) {
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if (addr == NULL ||
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os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
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IEEE80211_ADDR_LEN) == 0)
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return bsd_del_key(drv->sock, drv->ifname, NULL,
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key_idx);
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else
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return bsd_del_key(drv->sock, drv->ifname, addr,
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key_idx);
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}
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os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
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wpa_printf(MSG_DEBUG,
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"%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
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__func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
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seq_len, key_len);
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if (seq_len > sizeof(u_int64_t)) {
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wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
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__func__, seq_len);
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return -2;
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}
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if (key_len > sizeof(wk.ik_keydata)) {
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wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
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__func__, key_len);
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return -3;
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}
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os_memset(&wk, 0, sizeof(wk));
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wk.ik_type = cipher;
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wk.ik_flags = IEEE80211_KEY_RECV;
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if (set_tx)
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wk.ik_flags |= IEEE80211_KEY_XMIT;
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os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
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/*
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* Deduce whether group/global or unicast key by checking
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* the address (yech). Note also that we can only mark global
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* keys default; doing this for a unicast key is an error.
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*/
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if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
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wk.ik_flags |= IEEE80211_KEY_GROUP;
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wk.ik_keyix = key_idx;
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} else {
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wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
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}
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if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
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wk.ik_flags |= IEEE80211_KEY_DEFAULT;
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wk.ik_keylen = key_len;
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os_memcpy(&wk.ik_keyrsc, seq, seq_len);
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os_memcpy(wk.ik_keydata, key, key_len);
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return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
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return bsd_set_key(drv->sock, drv->ifname, alg, addr, key_idx, set_tx,
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seq, seq_len, key, key_len);
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}
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static int
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