| 1 | /* |
| 2 | * wpa_supplicant - WPA/RSN IE and KDE processing |
| 3 | * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> |
| 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 | |
| 11 | #include "common.h" |
| 12 | #include "wpa.h" |
| 13 | #include "pmksa_cache.h" |
| 14 | #include "common/ieee802_11_defs.h" |
| 15 | #include "wpa_i.h" |
| 16 | #include "wpa_ie.h" |
| 17 | |
| 18 | |
| 19 | /** |
| 20 | * wpa_parse_wpa_ie - Parse WPA/RSN IE |
| 21 | * @wpa_ie: Pointer to WPA or RSN IE |
| 22 | * @wpa_ie_len: Length of the WPA/RSN IE |
| 23 | * @data: Pointer to data area for parsing results |
| 24 | * Returns: 0 on success, -1 on failure |
| 25 | * |
| 26 | * Parse the contents of WPA or RSN IE and write the parsed data into data. |
| 27 | */ |
| 28 | int wpa_parse_wpa_ie(const u8 *wpa_ie, size_t wpa_ie_len, |
| 29 | struct wpa_ie_data *data) |
| 30 | { |
| 31 | if (wpa_ie_len >= 1 && wpa_ie[0] == WLAN_EID_RSN) |
| 32 | return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data); |
| 33 | else |
| 34 | return wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, data); |
| 35 | } |
| 36 | |
| 37 | |
| 38 | static int wpa_gen_wpa_ie_wpa(u8 *wpa_ie, size_t wpa_ie_len, |
| 39 | int pairwise_cipher, int group_cipher, |
| 40 | int key_mgmt) |
| 41 | { |
| 42 | u8 *pos; |
| 43 | struct wpa_ie_hdr *hdr; |
| 44 | u32 suite; |
| 45 | |
| 46 | if (wpa_ie_len < sizeof(*hdr) + WPA_SELECTOR_LEN + |
| 47 | 2 + WPA_SELECTOR_LEN + 2 + WPA_SELECTOR_LEN) |
| 48 | return -1; |
| 49 | |
| 50 | hdr = (struct wpa_ie_hdr *) wpa_ie; |
| 51 | hdr->elem_id = WLAN_EID_VENDOR_SPECIFIC; |
| 52 | RSN_SELECTOR_PUT(hdr->oui, WPA_OUI_TYPE); |
| 53 | WPA_PUT_LE16(hdr->version, WPA_VERSION); |
| 54 | pos = (u8 *) (hdr + 1); |
| 55 | |
| 56 | suite = wpa_cipher_to_suite(WPA_PROTO_WPA, group_cipher); |
| 57 | if (suite == 0) { |
| 58 | wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", |
| 59 | group_cipher); |
| 60 | return -1; |
| 61 | } |
| 62 | RSN_SELECTOR_PUT(pos, suite); |
| 63 | pos += WPA_SELECTOR_LEN; |
| 64 | |
| 65 | *pos++ = 1; |
| 66 | *pos++ = 0; |
| 67 | suite = wpa_cipher_to_suite(WPA_PROTO_WPA, pairwise_cipher); |
| 68 | if (suite == 0 || |
| 69 | (!wpa_cipher_valid_pairwise(pairwise_cipher) && |
| 70 | pairwise_cipher != WPA_CIPHER_NONE)) { |
| 71 | wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", |
| 72 | pairwise_cipher); |
| 73 | return -1; |
| 74 | } |
| 75 | RSN_SELECTOR_PUT(pos, suite); |
| 76 | pos += WPA_SELECTOR_LEN; |
| 77 | |
| 78 | *pos++ = 1; |
| 79 | *pos++ = 0; |
| 80 | if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { |
| 81 | RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X); |
| 82 | } else if (key_mgmt == WPA_KEY_MGMT_PSK) { |
| 83 | RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X); |
| 84 | } else if (key_mgmt == WPA_KEY_MGMT_WPA_NONE) { |
| 85 | RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_NONE); |
| 86 | } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { |
| 87 | RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_CCKM); |
| 88 | } else { |
| 89 | wpa_printf(MSG_WARNING, "Invalid key management type (%d).", |
| 90 | key_mgmt); |
| 91 | return -1; |
| 92 | } |
| 93 | pos += WPA_SELECTOR_LEN; |
| 94 | |
| 95 | /* WPA Capabilities; use defaults, so no need to include it */ |
| 96 | |
| 97 | hdr->len = (pos - wpa_ie) - 2; |
| 98 | |
| 99 | WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); |
| 100 | |
| 101 | return pos - wpa_ie; |
| 102 | } |
| 103 | |
| 104 | |
| 105 | static int wpa_gen_wpa_ie_rsn(u8 *rsn_ie, size_t rsn_ie_len, |
| 106 | int pairwise_cipher, int group_cipher, |
| 107 | int key_mgmt, int mgmt_group_cipher, |
| 108 | struct wpa_sm *sm) |
| 109 | { |
| 110 | u8 *pos; |
| 111 | struct rsn_ie_hdr *hdr; |
| 112 | u16 capab; |
| 113 | u32 suite; |
| 114 | |
| 115 | if (rsn_ie_len < sizeof(*hdr) + RSN_SELECTOR_LEN + |
| 116 | 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN + 2 + |
| 117 | (sm->cur_pmksa ? 2 + PMKID_LEN : 0)) { |
| 118 | wpa_printf(MSG_DEBUG, "RSN: Too short IE buffer (%lu bytes)", |
| 119 | (unsigned long) rsn_ie_len); |
| 120 | return -1; |
| 121 | } |
| 122 | |
| 123 | hdr = (struct rsn_ie_hdr *) rsn_ie; |
| 124 | hdr->elem_id = WLAN_EID_RSN; |
| 125 | WPA_PUT_LE16(hdr->version, RSN_VERSION); |
| 126 | pos = (u8 *) (hdr + 1); |
| 127 | |
| 128 | suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); |
| 129 | if (suite == 0) { |
| 130 | wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", |
| 131 | group_cipher); |
| 132 | return -1; |
| 133 | } |
| 134 | RSN_SELECTOR_PUT(pos, suite); |
| 135 | pos += RSN_SELECTOR_LEN; |
| 136 | |
| 137 | *pos++ = 1; |
| 138 | *pos++ = 0; |
| 139 | suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); |
| 140 | if (suite == 0 || |
| 141 | (!wpa_cipher_valid_pairwise(pairwise_cipher) && |
| 142 | pairwise_cipher != WPA_CIPHER_NONE)) { |
| 143 | wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", |
| 144 | pairwise_cipher); |
| 145 | return -1; |
| 146 | } |
| 147 | RSN_SELECTOR_PUT(pos, suite); |
| 148 | pos += RSN_SELECTOR_LEN; |
| 149 | |
| 150 | *pos++ = 1; |
| 151 | *pos++ = 0; |
| 152 | if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { |
| 153 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X); |
| 154 | } else if (key_mgmt == WPA_KEY_MGMT_PSK) { |
| 155 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X); |
| 156 | } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { |
| 157 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_CCKM); |
| 158 | #ifdef CONFIG_IEEE80211R |
| 159 | } else if (key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) { |
| 160 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X); |
| 161 | } else if (key_mgmt == WPA_KEY_MGMT_FT_PSK) { |
| 162 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK); |
| 163 | #endif /* CONFIG_IEEE80211R */ |
| 164 | #ifdef CONFIG_IEEE80211W |
| 165 | } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SHA256) { |
| 166 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256); |
| 167 | } else if (key_mgmt == WPA_KEY_MGMT_PSK_SHA256) { |
| 168 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256); |
| 169 | #endif /* CONFIG_IEEE80211W */ |
| 170 | #ifdef CONFIG_SAE |
| 171 | } else if (key_mgmt == WPA_KEY_MGMT_SAE) { |
| 172 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE); |
| 173 | } else if (key_mgmt == WPA_KEY_MGMT_FT_SAE) { |
| 174 | RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_SAE); |
| 175 | #endif /* CONFIG_SAE */ |
| 176 | } else { |
| 177 | wpa_printf(MSG_WARNING, "Invalid key management type (%d).", |
| 178 | key_mgmt); |
| 179 | return -1; |
| 180 | } |
| 181 | pos += RSN_SELECTOR_LEN; |
| 182 | |
| 183 | /* RSN Capabilities */ |
| 184 | capab = 0; |
| 185 | #ifdef CONFIG_IEEE80211W |
| 186 | if (sm->mfp) |
| 187 | capab |= WPA_CAPABILITY_MFPC; |
| 188 | if (sm->mfp == 2) |
| 189 | capab |= WPA_CAPABILITY_MFPR; |
| 190 | #endif /* CONFIG_IEEE80211W */ |
| 191 | WPA_PUT_LE16(pos, capab); |
| 192 | pos += 2; |
| 193 | |
| 194 | if (sm->cur_pmksa) { |
| 195 | /* PMKID Count (2 octets, little endian) */ |
| 196 | *pos++ = 1; |
| 197 | *pos++ = 0; |
| 198 | /* PMKID */ |
| 199 | os_memcpy(pos, sm->cur_pmksa->pmkid, PMKID_LEN); |
| 200 | pos += PMKID_LEN; |
| 201 | } |
| 202 | |
| 203 | #ifdef CONFIG_IEEE80211W |
| 204 | if (mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC) { |
| 205 | if (!sm->cur_pmksa) { |
| 206 | /* PMKID Count */ |
| 207 | WPA_PUT_LE16(pos, 0); |
| 208 | pos += 2; |
| 209 | } |
| 210 | |
| 211 | /* Management Group Cipher Suite */ |
| 212 | RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC); |
| 213 | pos += RSN_SELECTOR_LEN; |
| 214 | } |
| 215 | #endif /* CONFIG_IEEE80211W */ |
| 216 | |
| 217 | hdr->len = (pos - rsn_ie) - 2; |
| 218 | |
| 219 | WPA_ASSERT((size_t) (pos - rsn_ie) <= rsn_ie_len); |
| 220 | |
| 221 | return pos - rsn_ie; |
| 222 | } |
| 223 | |
| 224 | |
| 225 | /** |
| 226 | * wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy |
| 227 | * @sm: Pointer to WPA state machine data from wpa_sm_init() |
| 228 | * @wpa_ie: Pointer to memory area for the generated WPA/RSN IE |
| 229 | * @wpa_ie_len: Maximum length of the generated WPA/RSN IE |
| 230 | * Returns: Length of the generated WPA/RSN IE or -1 on failure |
| 231 | */ |
| 232 | int wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len) |
| 233 | { |
| 234 | if (sm->proto == WPA_PROTO_RSN) |
| 235 | return wpa_gen_wpa_ie_rsn(wpa_ie, wpa_ie_len, |
| 236 | sm->pairwise_cipher, |
| 237 | sm->group_cipher, |
| 238 | sm->key_mgmt, sm->mgmt_group_cipher, |
| 239 | sm); |
| 240 | else |
| 241 | return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len, |
| 242 | sm->pairwise_cipher, |
| 243 | sm->group_cipher, |
| 244 | sm->key_mgmt); |
| 245 | } |
| 246 | |
| 247 | |
| 248 | /** |
| 249 | * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs |
| 250 | * @pos: Pointer to the IE header |
| 251 | * @end: Pointer to the end of the Key Data buffer |
| 252 | * @ie: Pointer to parsed IE data |
| 253 | * Returns: 0 on success, 1 if end mark is found, -1 on failure |
| 254 | */ |
| 255 | static int wpa_parse_generic(const u8 *pos, const u8 *end, |
| 256 | struct wpa_eapol_ie_parse *ie) |
| 257 | { |
| 258 | if (pos[1] == 0) |
| 259 | return 1; |
| 260 | |
| 261 | if (pos[1] >= 6 && |
| 262 | RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE && |
| 263 | pos[2 + WPA_SELECTOR_LEN] == 1 && |
| 264 | pos[2 + WPA_SELECTOR_LEN + 1] == 0) { |
| 265 | ie->wpa_ie = pos; |
| 266 | ie->wpa_ie_len = pos[1] + 2; |
| 267 | wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key", |
| 268 | ie->wpa_ie, ie->wpa_ie_len); |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | if (pos + 1 + RSN_SELECTOR_LEN < end && |
| 273 | pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN && |
| 274 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) { |
| 275 | ie->pmkid = pos + 2 + RSN_SELECTOR_LEN; |
| 276 | wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key", |
| 277 | pos, pos[1] + 2); |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 282 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) { |
| 283 | ie->gtk = pos + 2 + RSN_SELECTOR_LEN; |
| 284 | ie->gtk_len = pos[1] - RSN_SELECTOR_LEN; |
| 285 | wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key", |
| 286 | pos, pos[1] + 2); |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 291 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) { |
| 292 | ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN; |
| 293 | ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN; |
| 294 | wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key", |
| 295 | pos, pos[1] + 2); |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | #ifdef CONFIG_PEERKEY |
| 300 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 301 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) { |
| 302 | ie->smk = pos + 2 + RSN_SELECTOR_LEN; |
| 303 | ie->smk_len = pos[1] - RSN_SELECTOR_LEN; |
| 304 | wpa_hexdump_key(MSG_DEBUG, "WPA: SMK in EAPOL-Key", |
| 305 | pos, pos[1] + 2); |
| 306 | return 0; |
| 307 | } |
| 308 | |
| 309 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 310 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_NONCE) { |
| 311 | ie->nonce = pos + 2 + RSN_SELECTOR_LEN; |
| 312 | ie->nonce_len = pos[1] - RSN_SELECTOR_LEN; |
| 313 | wpa_hexdump(MSG_DEBUG, "WPA: Nonce in EAPOL-Key", |
| 314 | pos, pos[1] + 2); |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 319 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_LIFETIME) { |
| 320 | ie->lifetime = pos + 2 + RSN_SELECTOR_LEN; |
| 321 | ie->lifetime_len = pos[1] - RSN_SELECTOR_LEN; |
| 322 | wpa_hexdump(MSG_DEBUG, "WPA: Lifetime in EAPOL-Key", |
| 323 | pos, pos[1] + 2); |
| 324 | return 0; |
| 325 | } |
| 326 | |
| 327 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 328 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_ERROR) { |
| 329 | ie->error = pos + 2 + RSN_SELECTOR_LEN; |
| 330 | ie->error_len = pos[1] - RSN_SELECTOR_LEN; |
| 331 | wpa_hexdump(MSG_DEBUG, "WPA: Error in EAPOL-Key", |
| 332 | pos, pos[1] + 2); |
| 333 | return 0; |
| 334 | } |
| 335 | #endif /* CONFIG_PEERKEY */ |
| 336 | |
| 337 | #ifdef CONFIG_IEEE80211W |
| 338 | if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| 339 | RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) { |
| 340 | ie->igtk = pos + 2 + RSN_SELECTOR_LEN; |
| 341 | ie->igtk_len = pos[1] - RSN_SELECTOR_LEN; |
| 342 | wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key", |
| 343 | pos, pos[1] + 2); |
| 344 | return 0; |
| 345 | } |
| 346 | #endif /* CONFIG_IEEE80211W */ |
| 347 | |
| 348 | #ifdef CONFIG_P2P |
| 349 | if (pos[1] >= RSN_SELECTOR_LEN + 1 && |
| 350 | RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) { |
| 351 | ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN; |
| 352 | wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key", |
| 353 | ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 && |
| 358 | RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) { |
| 359 | ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN; |
| 360 | wpa_hexdump(MSG_DEBUG, |
| 361 | "WPA: IP Address Allocation in EAPOL-Key", |
| 362 | ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN); |
| 363 | return 0; |
| 364 | } |
| 365 | #endif /* CONFIG_P2P */ |
| 366 | |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | |
| 371 | /** |
| 372 | * wpa_supplicant_parse_ies - Parse EAPOL-Key Key Data IEs |
| 373 | * @buf: Pointer to the Key Data buffer |
| 374 | * @len: Key Data Length |
| 375 | * @ie: Pointer to parsed IE data |
| 376 | * Returns: 0 on success, -1 on failure |
| 377 | */ |
| 378 | int wpa_supplicant_parse_ies(const u8 *buf, size_t len, |
| 379 | struct wpa_eapol_ie_parse *ie) |
| 380 | { |
| 381 | const u8 *pos, *end; |
| 382 | int ret = 0; |
| 383 | |
| 384 | os_memset(ie, 0, sizeof(*ie)); |
| 385 | for (pos = buf, end = pos + len; pos + 1 < end; pos += 2 + pos[1]) { |
| 386 | if (pos[0] == 0xdd && |
| 387 | ((pos == buf + len - 1) || pos[1] == 0)) { |
| 388 | /* Ignore padding */ |
| 389 | break; |
| 390 | } |
| 391 | if (pos + 2 + pos[1] > end) { |
| 392 | wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key Key Data " |
| 393 | "underflow (ie=%d len=%d pos=%d)", |
| 394 | pos[0], pos[1], (int) (pos - buf)); |
| 395 | wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data", |
| 396 | buf, len); |
| 397 | ret = -1; |
| 398 | break; |
| 399 | } |
| 400 | if (*pos == WLAN_EID_RSN) { |
| 401 | ie->rsn_ie = pos; |
| 402 | ie->rsn_ie_len = pos[1] + 2; |
| 403 | wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key", |
| 404 | ie->rsn_ie, ie->rsn_ie_len); |
| 405 | } else if (*pos == WLAN_EID_MOBILITY_DOMAIN) { |
| 406 | ie->mdie = pos; |
| 407 | ie->mdie_len = pos[1] + 2; |
| 408 | wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key", |
| 409 | ie->mdie, ie->mdie_len); |
| 410 | } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) { |
| 411 | ie->ftie = pos; |
| 412 | ie->ftie_len = pos[1] + 2; |
| 413 | wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key", |
| 414 | ie->ftie, ie->ftie_len); |
| 415 | } else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) { |
| 416 | if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) { |
| 417 | ie->reassoc_deadline = pos; |
| 418 | wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline " |
| 419 | "in EAPOL-Key", |
| 420 | ie->reassoc_deadline, pos[1] + 2); |
| 421 | } else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) { |
| 422 | ie->key_lifetime = pos; |
| 423 | wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime " |
| 424 | "in EAPOL-Key", |
| 425 | ie->key_lifetime, pos[1] + 2); |
| 426 | } else { |
| 427 | wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized " |
| 428 | "EAPOL-Key Key Data IE", |
| 429 | pos, 2 + pos[1]); |
| 430 | } |
| 431 | } else if (*pos == WLAN_EID_LINK_ID) { |
| 432 | if (pos[1] >= 18) { |
| 433 | ie->lnkid = pos; |
| 434 | ie->lnkid_len = pos[1] + 2; |
| 435 | } |
| 436 | } else if (*pos == WLAN_EID_EXT_CAPAB) { |
| 437 | ie->ext_capab = pos; |
| 438 | ie->ext_capab_len = pos[1] + 2; |
| 439 | } else if (*pos == WLAN_EID_SUPP_RATES) { |
| 440 | ie->supp_rates = pos; |
| 441 | ie->supp_rates_len = pos[1] + 2; |
| 442 | } else if (*pos == WLAN_EID_EXT_SUPP_RATES) { |
| 443 | ie->ext_supp_rates = pos; |
| 444 | ie->ext_supp_rates_len = pos[1] + 2; |
| 445 | } else if (*pos == WLAN_EID_HT_CAP) { |
| 446 | ie->ht_capabilities = pos + 2; |
| 447 | ie->ht_capabilities_len = pos[1]; |
| 448 | } else if (*pos == WLAN_EID_VHT_AID) { |
| 449 | if (pos[1] >= 2) |
| 450 | ie->aid = WPA_GET_LE16(pos + 2); |
| 451 | } else if (*pos == WLAN_EID_VHT_CAP) { |
| 452 | ie->vht_capabilities = pos + 2; |
| 453 | ie->vht_capabilities_len = pos[1]; |
| 454 | } else if (*pos == WLAN_EID_QOS && pos[1] >= 1) { |
| 455 | ie->qosinfo = pos[2]; |
| 456 | } else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) { |
| 457 | ie->supp_channels = pos + 2; |
| 458 | ie->supp_channels_len = pos[1]; |
| 459 | } else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) { |
| 460 | ie->supp_oper_classes = pos + 2; |
| 461 | ie->supp_oper_classes_len = pos[1]; |
| 462 | } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) { |
| 463 | ret = wpa_parse_generic(pos, end, ie); |
| 464 | if (ret < 0) |
| 465 | break; |
| 466 | if (ret > 0) { |
| 467 | ret = 0; |
| 468 | break; |
| 469 | } |
| 470 | } else { |
| 471 | wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized EAPOL-Key " |
| 472 | "Key Data IE", pos, 2 + pos[1]); |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | return ret; |
| 477 | } |