wpa_ie.c revision 807291d85bf857320aff6a8ade38c5f622ab9df8
1/* 2 * wpa_supplicant - WPA/RSN IE and KDE processing 3 * Copyright (c) 2003-2015, 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 */ 28int 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 38static 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 105static 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 if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { 177 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192); 178 } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B) { 179 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B); 180 } else { 181 wpa_printf(MSG_WARNING, "Invalid key management type (%d).", 182 key_mgmt); 183 return -1; 184 } 185 pos += RSN_SELECTOR_LEN; 186 187 /* RSN Capabilities */ 188 capab = 0; 189#ifdef CONFIG_IEEE80211W 190 if (sm->mfp) 191 capab |= WPA_CAPABILITY_MFPC; 192 if (sm->mfp == 2) 193 capab |= WPA_CAPABILITY_MFPR; 194#endif /* CONFIG_IEEE80211W */ 195 WPA_PUT_LE16(pos, capab); 196 pos += 2; 197 198 if (sm->cur_pmksa) { 199 /* PMKID Count (2 octets, little endian) */ 200 *pos++ = 1; 201 *pos++ = 0; 202 /* PMKID */ 203 os_memcpy(pos, sm->cur_pmksa->pmkid, PMKID_LEN); 204 pos += PMKID_LEN; 205 } 206 207#ifdef CONFIG_IEEE80211W 208 if (wpa_cipher_valid_mgmt_group(mgmt_group_cipher)) { 209 if (!sm->cur_pmksa) { 210 /* PMKID Count */ 211 WPA_PUT_LE16(pos, 0); 212 pos += 2; 213 } 214 215 /* Management Group Cipher Suite */ 216 RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN, 217 mgmt_group_cipher)); 218 pos += RSN_SELECTOR_LEN; 219 } 220#endif /* CONFIG_IEEE80211W */ 221 222 hdr->len = (pos - rsn_ie) - 2; 223 224 WPA_ASSERT((size_t) (pos - rsn_ie) <= rsn_ie_len); 225 226 return pos - rsn_ie; 227} 228 229 230#ifdef CONFIG_HS20 231static int wpa_gen_wpa_ie_osen(u8 *wpa_ie, size_t wpa_ie_len, 232 int pairwise_cipher, int group_cipher, 233 int key_mgmt) 234{ 235 u8 *pos, *len; 236 u32 suite; 237 238 if (wpa_ie_len < 2 + 4 + RSN_SELECTOR_LEN + 239 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN) 240 return -1; 241 242 pos = wpa_ie; 243 *pos++ = WLAN_EID_VENDOR_SPECIFIC; 244 len = pos++; /* to be filled */ 245 WPA_PUT_BE24(pos, OUI_WFA); 246 pos += 3; 247 *pos++ = HS20_OSEN_OUI_TYPE; 248 249 /* Group Data Cipher Suite */ 250 suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); 251 if (suite == 0) { 252 wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", 253 group_cipher); 254 return -1; 255 } 256 RSN_SELECTOR_PUT(pos, suite); 257 pos += RSN_SELECTOR_LEN; 258 259 /* Pairwise Cipher Suite Count and List */ 260 WPA_PUT_LE16(pos, 1); 261 pos += 2; 262 suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); 263 if (suite == 0 || 264 (!wpa_cipher_valid_pairwise(pairwise_cipher) && 265 pairwise_cipher != WPA_CIPHER_NONE)) { 266 wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", 267 pairwise_cipher); 268 return -1; 269 } 270 RSN_SELECTOR_PUT(pos, suite); 271 pos += RSN_SELECTOR_LEN; 272 273 /* AKM Suite Count and List */ 274 WPA_PUT_LE16(pos, 1); 275 pos += 2; 276 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OSEN); 277 pos += RSN_SELECTOR_LEN; 278 279 *len = pos - len - 1; 280 281 WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); 282 283 return pos - wpa_ie; 284} 285#endif /* CONFIG_HS20 */ 286 287 288/** 289 * wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy 290 * @sm: Pointer to WPA state machine data from wpa_sm_init() 291 * @wpa_ie: Pointer to memory area for the generated WPA/RSN IE 292 * @wpa_ie_len: Maximum length of the generated WPA/RSN IE 293 * Returns: Length of the generated WPA/RSN IE or -1 on failure 294 */ 295int wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len) 296{ 297 if (sm->proto == WPA_PROTO_RSN) 298 return wpa_gen_wpa_ie_rsn(wpa_ie, wpa_ie_len, 299 sm->pairwise_cipher, 300 sm->group_cipher, 301 sm->key_mgmt, sm->mgmt_group_cipher, 302 sm); 303#ifdef CONFIG_HS20 304 else if (sm->proto == WPA_PROTO_OSEN) 305 return wpa_gen_wpa_ie_osen(wpa_ie, wpa_ie_len, 306 sm->pairwise_cipher, 307 sm->group_cipher, 308 sm->key_mgmt); 309#endif /* CONFIG_HS20 */ 310 else 311 return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len, 312 sm->pairwise_cipher, 313 sm->group_cipher, 314 sm->key_mgmt); 315} 316 317 318/** 319 * wpa_parse_vendor_specific - Parse Vendor Specific IEs 320 * @pos: Pointer to the IE header 321 * @end: Pointer to the end of the Key Data buffer 322 * @ie: Pointer to parsed IE data 323 * Returns: 0 on success, 1 if end mark is found, -1 on failure 324 */ 325static int wpa_parse_vendor_specific(const u8 *pos, const u8 *end, 326 struct wpa_eapol_ie_parse *ie) 327{ 328 unsigned int oui; 329 330 if (pos[1] < 4) { 331 wpa_printf(MSG_MSGDUMP, "Too short vendor specific IE ignored (len=%u)", 332 pos[1]); 333 return 1; 334 } 335 336 oui = WPA_GET_BE24(&pos[2]); 337 if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) { 338 if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) { 339 ie->wmm = &pos[2]; 340 ie->wmm_len = pos[1]; 341 wpa_hexdump(MSG_DEBUG, "WPA: WMM IE", 342 ie->wmm, ie->wmm_len); 343 } else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) { 344 ie->wmm = &pos[2]; 345 ie->wmm_len = pos[1]; 346 wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element", 347 ie->wmm, ie->wmm_len); 348 } 349 } 350 return 0; 351} 352 353 354/** 355 * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs 356 * @pos: Pointer to the IE header 357 * @end: Pointer to the end of the Key Data buffer 358 * @ie: Pointer to parsed IE data 359 * Returns: 0 on success, 1 if end mark is found, -1 on failure 360 */ 361static int wpa_parse_generic(const u8 *pos, const u8 *end, 362 struct wpa_eapol_ie_parse *ie) 363{ 364 if (pos[1] == 0) 365 return 1; 366 367 if (pos[1] >= 6 && 368 RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE && 369 pos[2 + WPA_SELECTOR_LEN] == 1 && 370 pos[2 + WPA_SELECTOR_LEN + 1] == 0) { 371 ie->wpa_ie = pos; 372 ie->wpa_ie_len = pos[1] + 2; 373 wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key", 374 ie->wpa_ie, ie->wpa_ie_len); 375 return 0; 376 } 377 378 if (pos + 1 + RSN_SELECTOR_LEN < end && 379 pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN && 380 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) { 381 ie->pmkid = pos + 2 + RSN_SELECTOR_LEN; 382 wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key", 383 pos, pos[1] + 2); 384 return 0; 385 } 386 387 if (pos[1] > RSN_SELECTOR_LEN + 2 && 388 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) { 389 ie->gtk = pos + 2 + RSN_SELECTOR_LEN; 390 ie->gtk_len = pos[1] - RSN_SELECTOR_LEN; 391 wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key", 392 pos, pos[1] + 2); 393 return 0; 394 } 395 396 if (pos[1] > RSN_SELECTOR_LEN + 2 && 397 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) { 398 ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN; 399 ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN; 400 wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key", 401 pos, pos[1] + 2); 402 return 0; 403 } 404 405#ifdef CONFIG_PEERKEY 406 if (pos[1] > RSN_SELECTOR_LEN + 2 && 407 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) { 408 ie->smk = pos + 2 + RSN_SELECTOR_LEN; 409 ie->smk_len = pos[1] - RSN_SELECTOR_LEN; 410 wpa_hexdump_key(MSG_DEBUG, "WPA: SMK in EAPOL-Key", 411 pos, pos[1] + 2); 412 return 0; 413 } 414 415 if (pos[1] > RSN_SELECTOR_LEN + 2 && 416 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_NONCE) { 417 ie->nonce = pos + 2 + RSN_SELECTOR_LEN; 418 ie->nonce_len = pos[1] - RSN_SELECTOR_LEN; 419 wpa_hexdump(MSG_DEBUG, "WPA: Nonce in EAPOL-Key", 420 pos, pos[1] + 2); 421 return 0; 422 } 423 424 if (pos[1] > RSN_SELECTOR_LEN + 2 && 425 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_LIFETIME) { 426 ie->lifetime = pos + 2 + RSN_SELECTOR_LEN; 427 ie->lifetime_len = pos[1] - RSN_SELECTOR_LEN; 428 wpa_hexdump(MSG_DEBUG, "WPA: Lifetime in EAPOL-Key", 429 pos, pos[1] + 2); 430 return 0; 431 } 432 433 if (pos[1] > RSN_SELECTOR_LEN + 2 && 434 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_ERROR) { 435 ie->error = pos + 2 + RSN_SELECTOR_LEN; 436 ie->error_len = pos[1] - RSN_SELECTOR_LEN; 437 wpa_hexdump(MSG_DEBUG, "WPA: Error in EAPOL-Key", 438 pos, pos[1] + 2); 439 return 0; 440 } 441#endif /* CONFIG_PEERKEY */ 442 443#ifdef CONFIG_IEEE80211W 444 if (pos[1] > RSN_SELECTOR_LEN + 2 && 445 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) { 446 ie->igtk = pos + 2 + RSN_SELECTOR_LEN; 447 ie->igtk_len = pos[1] - RSN_SELECTOR_LEN; 448 wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key", 449 pos, pos[1] + 2); 450 return 0; 451 } 452#endif /* CONFIG_IEEE80211W */ 453 454#ifdef CONFIG_P2P 455 if (pos[1] >= RSN_SELECTOR_LEN + 1 && 456 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) { 457 ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN; 458 wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key", 459 ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN); 460 return 0; 461 } 462 463 if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 && 464 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) { 465 ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN; 466 wpa_hexdump(MSG_DEBUG, 467 "WPA: IP Address Allocation in EAPOL-Key", 468 ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN); 469 return 0; 470 } 471#endif /* CONFIG_P2P */ 472 473 return 0; 474} 475 476 477/** 478 * wpa_supplicant_parse_ies - Parse EAPOL-Key Key Data IEs 479 * @buf: Pointer to the Key Data buffer 480 * @len: Key Data Length 481 * @ie: Pointer to parsed IE data 482 * Returns: 0 on success, -1 on failure 483 */ 484int wpa_supplicant_parse_ies(const u8 *buf, size_t len, 485 struct wpa_eapol_ie_parse *ie) 486{ 487 const u8 *pos, *end; 488 int ret = 0; 489 490 os_memset(ie, 0, sizeof(*ie)); 491 for (pos = buf, end = pos + len; pos + 1 < end; pos += 2 + pos[1]) { 492 if (pos[0] == 0xdd && 493 ((pos == buf + len - 1) || pos[1] == 0)) { 494 /* Ignore padding */ 495 break; 496 } 497 if (pos + 2 + pos[1] > end) { 498 wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key Key Data " 499 "underflow (ie=%d len=%d pos=%d)", 500 pos[0], pos[1], (int) (pos - buf)); 501 wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data", 502 buf, len); 503 ret = -1; 504 break; 505 } 506 if (*pos == WLAN_EID_RSN) { 507 ie->rsn_ie = pos; 508 ie->rsn_ie_len = pos[1] + 2; 509 wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key", 510 ie->rsn_ie, ie->rsn_ie_len); 511 } else if (*pos == WLAN_EID_MOBILITY_DOMAIN) { 512 ie->mdie = pos; 513 ie->mdie_len = pos[1] + 2; 514 wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key", 515 ie->mdie, ie->mdie_len); 516 } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) { 517 ie->ftie = pos; 518 ie->ftie_len = pos[1] + 2; 519 wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key", 520 ie->ftie, ie->ftie_len); 521 } else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) { 522 if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) { 523 ie->reassoc_deadline = pos; 524 wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline " 525 "in EAPOL-Key", 526 ie->reassoc_deadline, pos[1] + 2); 527 } else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) { 528 ie->key_lifetime = pos; 529 wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime " 530 "in EAPOL-Key", 531 ie->key_lifetime, pos[1] + 2); 532 } else { 533 wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized " 534 "EAPOL-Key Key Data IE", 535 pos, 2 + pos[1]); 536 } 537 } else if (*pos == WLAN_EID_LINK_ID) { 538 if (pos[1] >= 18) { 539 ie->lnkid = pos; 540 ie->lnkid_len = pos[1] + 2; 541 } 542 } else if (*pos == WLAN_EID_EXT_CAPAB) { 543 ie->ext_capab = pos; 544 ie->ext_capab_len = pos[1] + 2; 545 } else if (*pos == WLAN_EID_SUPP_RATES) { 546 ie->supp_rates = pos; 547 ie->supp_rates_len = pos[1] + 2; 548 } else if (*pos == WLAN_EID_EXT_SUPP_RATES) { 549 ie->ext_supp_rates = pos; 550 ie->ext_supp_rates_len = pos[1] + 2; 551 } else if (*pos == WLAN_EID_HT_CAP) { 552 ie->ht_capabilities = pos + 2; 553 ie->ht_capabilities_len = pos[1]; 554 } else if (*pos == WLAN_EID_VHT_AID) { 555 if (pos[1] >= 2) 556 ie->aid = WPA_GET_LE16(pos + 2) & 0x3fff; 557 } else if (*pos == WLAN_EID_VHT_CAP) { 558 ie->vht_capabilities = pos + 2; 559 ie->vht_capabilities_len = pos[1]; 560 } else if (*pos == WLAN_EID_QOS && pos[1] >= 1) { 561 ie->qosinfo = pos[2]; 562 } else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) { 563 ie->supp_channels = pos + 2; 564 ie->supp_channels_len = pos[1]; 565 } else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) { 566 /* 567 * The value of the Length field of the Supported 568 * Operating Classes element is between 2 and 253. 569 * Silently skip invalid elements to avoid interop 570 * issues when trying to use the value. 571 */ 572 if (pos[1] >= 2 && pos[1] <= 253) { 573 ie->supp_oper_classes = pos + 2; 574 ie->supp_oper_classes_len = pos[1]; 575 } 576 } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) { 577 ret = wpa_parse_generic(pos, end, ie); 578 if (ret < 0) 579 break; 580 if (ret > 0) { 581 ret = 0; 582 break; 583 } 584 585 ret = wpa_parse_vendor_specific(pos, end, ie); 586 if (ret < 0) 587 break; 588 if (ret > 0) { 589 ret = 0; 590 break; 591 } 592 } else { 593 wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized EAPOL-Key " 594 "Key Data IE", pos, 2 + pos[1]); 595 } 596 } 597 598 return ret; 599} 600