18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_supplicant - WPA/RSN IE and KDE processing 3807291d85bf857320aff6a8ade38c5f622ab9df8Dmitry Shmidt * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "pmksa_cache.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_i.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_ie.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_parse_wpa_ie - Parse WPA/RSN IE 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_ie: Pointer to WPA or RSN IE 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_ie_len: Length of the WPA/RSN IE 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @data: Pointer to data area for parsing results 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, -1 on failure 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Parse the contents of WPA or RSN IE and write the parsed data into data. 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_parse_wpa_ie(const u8 *wpa_ie, size_t wpa_ie_len, 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_data *data) 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ie_len >= 1 && wpa_ie[0] == WLAN_EID_RSN) 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data); 33912c6ecf72fb2c84fbf17dbd0666492778dbd9fcDmitry Shmidt if (wpa_ie_len >= 6 && wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC && 34912c6ecf72fb2c84fbf17dbd0666492778dbd9fcDmitry Shmidt wpa_ie[1] >= 4 && WPA_GET_BE32(&wpa_ie[2]) == OSEN_IE_VENDOR_TYPE) 35912c6ecf72fb2c84fbf17dbd0666492778dbd9fcDmitry Shmidt return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data); 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, data); 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_gen_wpa_ie_wpa(u8 *wpa_ie, size_t wpa_ie_len, 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise_cipher, int group_cipher, 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int key_mgmt) 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ie_hdr *hdr; 474530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt u32 suite; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ie_len < sizeof(*hdr) + WPA_SELECTOR_LEN + 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + WPA_SELECTOR_LEN + 2 + WPA_SELECTOR_LEN) 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct wpa_ie_hdr *) wpa_ie; 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_VENDOR_SPECIFIC; 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(hdr->oui, WPA_OUI_TYPE); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, WPA_VERSION); 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 594530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_WPA, group_cipher); 604530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (suite == 0) { 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_cipher); 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 654530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += WPA_SELECTOR_LEN; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 1; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0; 704530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_WPA, pairwise_cipher); 714530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (suite == 0 || 724530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt (!wpa_cipher_valid_pairwise(pairwise_cipher) && 734530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt pairwise_cipher != WPA_CIPHER_NONE)) { 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise_cipher); 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 784530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += WPA_SELECTOR_LEN; 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 1; 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0; 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_PSK) { 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_NONE); 89d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { 90d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_CCKM); 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid key management type (%d).", 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_mgmt); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += WPA_SELECTOR_LEN; 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPA Capabilities; use defaults, so no need to include it */ 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - wpa_ie) - 2; 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - wpa_ie; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_gen_wpa_ie_rsn(u8 *rsn_ie, size_t rsn_ie_len, 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise_cipher, int group_cipher, 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int key_mgmt, int mgmt_group_cipher, 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_sm *sm) 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ie_hdr *hdr; 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 capab; 1164530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt u32 suite; 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rsn_ie_len < sizeof(*hdr) + RSN_SELECTOR_LEN + 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN + 2 + 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (sm->cur_pmksa ? 2 + PMKID_LEN : 0)) { 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "RSN: Too short IE buffer (%lu bytes)", 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) rsn_ie_len); 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ie_hdr *) rsn_ie; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->elem_id = WLAN_EID_RSN; 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->version, RSN_VERSION); 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1314530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); 1324530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (suite == 0) { 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_cipher); 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1374530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 1; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0; 1424530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); 1434530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (suite == 0 || 1444530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt (!wpa_cipher_valid_pairwise(pairwise_cipher) && 1454530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt pairwise_cipher != WPA_CIPHER_NONE)) { 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise_cipher); 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1504530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 1; 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0; 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X); 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_PSK) { 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X); 159d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { 160d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_CCKM); 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211R 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) { 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X); 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_FT_PSK) { 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK); 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211R */ 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SHA256) { 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256); 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_PSK_SHA256) { 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256); 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 173d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt#ifdef CONFIG_SAE 174d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_SAE) { 175d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE); 176d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_FT_SAE) { 177d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_SAE); 178d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt#endif /* CONFIG_SAE */ 179807291d85bf857320aff6a8ade38c5f622ab9df8Dmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { 180807291d85bf857320aff6a8ade38c5f622ab9df8Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192); 1816c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B) { 1826c0da2bb83f6915d8260912362692d1a742e057bDmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B); 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid key management type (%d).", 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_mgmt); 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RSN Capabilities */ 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab = 0; 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->mfp) 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab |= WPA_CAPABILITY_MFPC; 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->mfp == 2) 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab |= WPA_CAPABILITY_MFPR; 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, capab); 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->cur_pmksa) { 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* PMKID Count (2 octets, little endian) */ 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 1; 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 0; 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* PMKID */ 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, sm->cur_pmksa->pmkid, PMKID_LEN); 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += PMKID_LEN; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 211b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (wpa_cipher_valid_mgmt_group(mgmt_group_cipher)) { 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!sm->cur_pmksa) { 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* PMKID Count */ 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, 0); 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Management Group Cipher Suite */ 219b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN, 220b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt mgmt_group_cipher)); 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += RSN_SELECTOR_LEN; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->len = (pos - rsn_ie) - 2; 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_ASSERT((size_t) (pos - rsn_ie) <= rsn_ie_len); 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - rsn_ie; 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 233f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt#ifdef CONFIG_HS20 234f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidtstatic int wpa_gen_wpa_ie_osen(u8 *wpa_ie, size_t wpa_ie_len, 235f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt int pairwise_cipher, int group_cipher, 236f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt int key_mgmt) 237f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt{ 238f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt u8 *pos, *len; 239f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt u32 suite; 240f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 241f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt if (wpa_ie_len < 2 + 4 + RSN_SELECTOR_LEN + 242f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN) 243f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt return -1; 244f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 245f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos = wpa_ie; 246f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt *pos++ = WLAN_EID_VENDOR_SPECIFIC; 247f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt len = pos++; /* to be filled */ 248f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt WPA_PUT_BE24(pos, OUI_WFA); 249f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += 3; 250f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt *pos++ = HS20_OSEN_OUI_TYPE; 251f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 252f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt /* Group Data Cipher Suite */ 253f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); 254f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt if (suite == 0) { 255f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", 256f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt group_cipher); 257f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt return -1; 258f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt } 259f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 260f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += RSN_SELECTOR_LEN; 261f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 262f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt /* Pairwise Cipher Suite Count and List */ 263f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt WPA_PUT_LE16(pos, 1); 264f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += 2; 265f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); 266f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt if (suite == 0 || 267f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt (!wpa_cipher_valid_pairwise(pairwise_cipher) && 268f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pairwise_cipher != WPA_CIPHER_NONE)) { 269f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", 270f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pairwise_cipher); 271f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt return -1; 272f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt } 273f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt RSN_SELECTOR_PUT(pos, suite); 274f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += RSN_SELECTOR_LEN; 275f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 276f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt /* AKM Suite Count and List */ 277f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt WPA_PUT_LE16(pos, 1); 278f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += 2; 279f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OSEN); 280f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt pos += RSN_SELECTOR_LEN; 281f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 282f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt *len = pos - len - 1; 283f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 284f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); 285f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 286f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt return pos - wpa_ie; 287f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt} 288f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt#endif /* CONFIG_HS20 */ 289f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 290f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @sm: Pointer to WPA state machine data from wpa_sm_init() 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_ie: Pointer to memory area for the generated WPA/RSN IE 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @wpa_ie_len: Maximum length of the generated WPA/RSN IE 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: Length of the generated WPA/RSN IE or -1 on failure 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len) 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->proto == WPA_PROTO_RSN) 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_gen_wpa_ie_rsn(wpa_ie, wpa_ie_len, 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_cipher, 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->group_cipher, 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->key_mgmt, sm->mgmt_group_cipher, 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm); 306f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt#ifdef CONFIG_HS20 307f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt else if (sm->proto == WPA_PROTO_OSEN) 308f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt return wpa_gen_wpa_ie_osen(wpa_ie, wpa_ie_len, 309f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt sm->pairwise_cipher, 310f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt sm->group_cipher, 311f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt sm->key_mgmt); 312f21452aea786ac056eb01f1cbba4f553bd502747Dmitry Shmidt#endif /* CONFIG_HS20 */ 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len, 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_cipher, 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->group_cipher, 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->key_mgmt); 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 322b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt * wpa_parse_vendor_specific - Parse Vendor Specific IEs 323b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt * @pos: Pointer to the IE header 324b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt * @end: Pointer to the end of the Key Data buffer 325b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt * @ie: Pointer to parsed IE data 326b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt * Returns: 0 on success, 1 if end mark is found, -1 on failure 327b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt */ 328b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidtstatic int wpa_parse_vendor_specific(const u8 *pos, const u8 *end, 329b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt struct wpa_eapol_ie_parse *ie) 330b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt{ 331b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt unsigned int oui; 332b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 333b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (pos[1] < 4) { 334b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_MSGDUMP, "Too short vendor specific IE ignored (len=%u)", 335b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt pos[1]); 336b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 1; 337b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 338b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 339b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt oui = WPA_GET_BE24(&pos[2]); 340b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) { 341b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) { 342b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm = &pos[2]; 343b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm_len = pos[1]; 344b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: WMM IE", 345b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm, ie->wmm_len); 346b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) { 347b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm = &pos[2]; 348b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm_len = pos[1]; 349b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element", 350b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ie->wmm, ie->wmm_len); 351b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 352b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 353b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 0; 354b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt} 355b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 356b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 357b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt/** 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @pos: Pointer to the IE header 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @end: Pointer to the end of the Key Data buffer 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ie: Pointer to parsed IE data 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, 1 if end mark is found, -1 on failure 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_parse_generic(const u8 *pos, const u8 *end, 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse *ie) 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] == 0) 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 1; 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] >= 6 && 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE && 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[2 + WPA_SELECTOR_LEN] == 1 && 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[2 + WPA_SELECTOR_LEN + 1] == 0) { 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->wpa_ie = pos; 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->wpa_ie_len = pos[1] + 2; 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key", 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->wpa_ie, ie->wpa_ie_len); 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + RSN_SELECTOR_LEN < end && 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN && 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) { 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->pmkid = pos + 2 + RSN_SELECTOR_LEN; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key", 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) { 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->gtk = pos + 2 + RSN_SELECTOR_LEN; 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->gtk_len = pos[1] - RSN_SELECTOR_LEN; 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key", 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) { 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN; 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN; 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key", 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_PEERKEY 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) { 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->smk = pos + 2 + RSN_SELECTOR_LEN; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->smk_len = pos[1] - RSN_SELECTOR_LEN; 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPA: SMK in EAPOL-Key", 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_NONCE) { 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->nonce = pos + 2 + RSN_SELECTOR_LEN; 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->nonce_len = pos[1] - RSN_SELECTOR_LEN; 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Nonce in EAPOL-Key", 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_LIFETIME) { 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->lifetime = pos + 2 + RSN_SELECTOR_LEN; 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->lifetime_len = pos[1] - RSN_SELECTOR_LEN; 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Lifetime in EAPOL-Key", 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_ERROR) { 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->error = pos + 2 + RSN_SELECTOR_LEN; 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->error_len = pos[1] - RSN_SELECTOR_LEN; 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Error in EAPOL-Key", 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_PEERKEY */ 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] > RSN_SELECTOR_LEN + 2 && 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) { 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->igtk = pos + 2 + RSN_SELECTOR_LEN; 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->igtk_len = pos[1] - RSN_SELECTOR_LEN; 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key", 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, pos[1] + 2); 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 457cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#ifdef CONFIG_P2P 458cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (pos[1] >= RSN_SELECTOR_LEN + 1 && 459cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) { 460cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN; 461cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key", 462cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN); 463cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return 0; 464cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 465cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 466cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 && 467cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) { 468cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN; 469cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, 470cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "WPA: IP Address Allocation in EAPOL-Key", 471cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN); 472cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return 0; 473cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 474cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#endif /* CONFIG_P2P */ 475cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * wpa_supplicant_parse_ies - Parse EAPOL-Key Key Data IEs 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @buf: Pointer to the Key Data buffer 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @len: Key Data Length 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ie: Pointer to parsed IE data 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, -1 on failure 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_supplicant_parse_ies(const u8 *buf, size_t len, 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_eapol_ie_parse *ie) 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end; 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret = 0; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(ie, 0, sizeof(*ie)); 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (pos = buf, end = pos + len; pos + 1 < end; pos += 2 + pos[1]) { 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[0] == 0xdd && 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ((pos == buf + len - 1) || pos[1] == 0)) { 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Ignore padding */ 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 2 + pos[1] > end) { 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key Key Data " 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "underflow (ie=%d len=%d pos=%d)", 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1], (int) (pos - buf)); 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data", 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf, len); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = -1; 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos == WLAN_EID_RSN) { 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->rsn_ie = pos; 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->rsn_ie_len = pos[1] + 2; 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key", 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->rsn_ie, ie->rsn_ie_len); 5149d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt } else if (*pos == WLAN_EID_MOBILITY_DOMAIN && 5159d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt pos[1] >= sizeof(struct rsn_mdie)) { 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->mdie = pos; 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->mdie_len = pos[1] + 2; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key", 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->mdie, ie->mdie_len); 5209d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION && 5219d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt pos[1] >= sizeof(struct rsn_ftie)) { 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->ftie = pos; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->ftie_len = pos[1] + 2; 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key", 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->ftie, ie->ftie_len); 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) { 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) { 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->reassoc_deadline = pos; 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline " 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in EAPOL-Key", 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->reassoc_deadline, pos[1] + 2); 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) { 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->key_lifetime = pos; 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime " 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in EAPOL-Key", 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->key_lifetime, pos[1] + 2); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized " 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAPOL-Key Key Data IE", 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, 2 + pos[1]); 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (*pos == WLAN_EID_LINK_ID) { 5431f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (pos[1] >= 18) { 5441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->lnkid = pos; 5451f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->lnkid_len = pos[1] + 2; 5461f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (*pos == WLAN_EID_EXT_CAPAB) { 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->ext_capab = pos; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ie->ext_capab_len = pos[1] + 2; 5501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } else if (*pos == WLAN_EID_SUPP_RATES) { 5511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->supp_rates = pos; 5521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->supp_rates_len = pos[1] + 2; 5531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } else if (*pos == WLAN_EID_EXT_SUPP_RATES) { 5541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->ext_supp_rates = pos; 5551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt ie->ext_supp_rates_len = pos[1] + 2; 5569d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt } else if (*pos == WLAN_EID_HT_CAP && 5579d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt pos[1] >= sizeof(struct ieee80211_ht_capabilities)) { 558f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt ie->ht_capabilities = pos + 2; 55951b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt } else if (*pos == WLAN_EID_VHT_AID) { 56051b6ea882f234c14cd1fe1332a3840cf61fafccaDmitry Shmidt if (pos[1] >= 2) 5619ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt ie->aid = WPA_GET_LE16(pos + 2) & 0x3fff; 5629d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt } else if (*pos == WLAN_EID_VHT_CAP && 5639d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt pos[1] >= sizeof(struct ieee80211_vht_capabilities)) 5649d9e60286e05ae45025b672636490bd12586138dDmitry Shmidt { 56533e38bfa7159cef089d6ee0d904778e184c72c47Dmitry Shmidt ie->vht_capabilities = pos + 2; 566f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } else if (*pos == WLAN_EID_QOS && pos[1] >= 1) { 567f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt ie->qosinfo = pos[2]; 568344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) { 569344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt ie->supp_channels = pos + 2; 570344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt ie->supp_channels_len = pos[1]; 571344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt } else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) { 5724582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt /* 5734582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt * The value of the Length field of the Supported 5744582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt * Operating Classes element is between 2 and 253. 5754582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt * Silently skip invalid elements to avoid interop 5764582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt * issues when trying to use the value. 5774582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt */ 5784582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt if (pos[1] >= 2 && pos[1] <= 253) { 5794582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt ie->supp_oper_classes = pos + 2; 5804582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt ie->supp_oper_classes_len = pos[1]; 5814582d2a5dd8180c52eb95b1100fb183b9a289708Dmitry Shmidt } 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) { 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_parse_generic(pos, end, ie); 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret > 0) { 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = 0; 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 590b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 591b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ret = wpa_parse_vendor_specific(pos, end, ie); 592b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (ret < 0) 593b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt break; 594b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (ret > 0) { 595b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt ret = 0; 596b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt break; 597b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized EAPOL-Key " 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Key Data IE", pos, 2 + pos[1]); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 606