1 /* 2 * Driver interaction with OpenBSD net80211 layer 3 * Copyright (c) 2013, Mark Kettenis 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 #include <sys/ioctl.h> 11 12 #include <net/if.h> 13 #include <net80211/ieee80211.h> 14 #include <net80211/ieee80211_crypto.h> 15 #include <net80211/ieee80211_ioctl.h> 16 17 #include "common.h" 18 #include "driver.h" 19 20 struct openbsd_driver_data { 21 char ifname[IFNAMSIZ + 1]; 22 void *ctx; 23 24 int sock; /* open socket for 802.11 ioctls */ 25 }; 26 27 28 static int 29 wpa_driver_openbsd_get_ssid(void *priv, u8 *ssid) 30 { 31 struct openbsd_driver_data *drv = priv; 32 struct ieee80211_nwid nwid; 33 struct ifreq ifr; 34 35 os_memset(&ifr, 0, sizeof(ifr)); 36 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); 37 ifr.ifr_data = (void *)&nwid; 38 if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 || 39 nwid.i_len > IEEE80211_NWID_LEN) 40 return -1; 41 42 os_memcpy(ssid, nwid.i_nwid, nwid.i_len); 43 return nwid.i_len; 44 } 45 46 static int 47 wpa_driver_openbsd_get_bssid(void *priv, u8 *bssid) 48 { 49 struct openbsd_driver_data *drv = priv; 50 struct ieee80211_bssid id; 51 52 os_strlcpy(id.i_name, drv->ifname, sizeof(id.i_name)); 53 if (ioctl(drv->sock, SIOCG80211BSSID, &id) < 0) 54 return -1; 55 56 os_memcpy(bssid, id.i_bssid, IEEE80211_ADDR_LEN); 57 return 0; 58 } 59 60 61 static int 62 wpa_driver_openbsd_get_capa(void *priv, struct wpa_driver_capa *capa) 63 { 64 os_memset(capa, 0, sizeof(*capa)); 65 capa->flags = WPA_DRIVER_FLAGS_4WAY_HANDSHAKE; 66 return 0; 67 } 68 69 70 static int 71 wpa_driver_openbsd_set_key(const char *ifname, void *priv, enum wpa_alg alg, 72 const unsigned char *addr, int key_idx, int set_tx, const u8 *seq, 73 size_t seq_len, const u8 *key, size_t key_len) 74 { 75 struct openbsd_driver_data *drv = priv; 76 struct ieee80211_keyavail keyavail; 77 78 if (alg != WPA_ALG_PMK || key_len > IEEE80211_PMK_LEN) 79 return -1; 80 81 memset(&keyavail, 0, sizeof(keyavail)); 82 os_strlcpy(keyavail.i_name, drv->ifname, sizeof(keyavail.i_name)); 83 if (wpa_driver_openbsd_get_bssid(priv, keyavail.i_macaddr) < 0) 84 return -1; 85 memcpy(keyavail.i_key, key, key_len); 86 87 if (ioctl(drv->sock, SIOCS80211KEYAVAIL, &keyavail) < 0) 88 return -1; 89 90 return 0; 91 } 92 93 static void * 94 wpa_driver_openbsd_init(void *ctx, const char *ifname) 95 { 96 struct openbsd_driver_data *drv; 97 98 drv = os_zalloc(sizeof(*drv)); 99 if (drv == NULL) 100 return NULL; 101 102 drv->sock = socket(PF_INET, SOCK_DGRAM, 0); 103 if (drv->sock < 0) 104 goto fail; 105 106 drv->ctx = ctx; 107 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); 108 109 return drv; 110 111 fail: 112 os_free(drv); 113 return NULL; 114 } 115 116 117 static void 118 wpa_driver_openbsd_deinit(void *priv) 119 { 120 struct openbsd_driver_data *drv = priv; 121 122 close(drv->sock); 123 os_free(drv); 124 } 125 126 127 const struct wpa_driver_ops wpa_driver_openbsd_ops = { 128 .name = "openbsd", 129 .desc = "OpenBSD 802.11 support", 130 .get_ssid = wpa_driver_openbsd_get_ssid, 131 .get_bssid = wpa_driver_openbsd_get_bssid, 132 .get_capa = wpa_driver_openbsd_get_capa, 133 .set_key = wpa_driver_openbsd_set_key, 134 .init = wpa_driver_openbsd_init, 135 .deinit = wpa_driver_openbsd_deinit, 136 }; 137