}
-#define OUI_MICROSOFT 0x0050f2 /* Microsoft (also used in Wi-Fi specs)
- * 00:50:F2 */
-
-static int ieee802_11_parse_vendor_specific(u8 *pos, size_t elen,
- struct ieee802_11_elems *elems,
- int show_errors)
-{
- unsigned int oui;
-
- /* first 3 bytes in vendor specific information element are the IEEE
- * OUI of the vendor. The following byte is used a vendor specific
- * sub-type. */
- if (elen < 4) {
- if (show_errors) {
- wpa_printf(MSG_MSGDUMP, "short vendor specific "
- "information element ignored (len=%lu)",
- (unsigned long) elen);
- }
- return -1;
- }
-
- oui = WPA_GET_BE24(pos);
- switch (oui) {
- case OUI_MICROSOFT:
- /* Microsoft/Wi-Fi information elements are further typed and
- * subtyped */
- switch (pos[3]) {
- case 1:
- /* Microsoft OUI (00:50:F2) with OUI Type 1:
- * real WPA information element */
- elems->wpa_ie = pos;
- elems->wpa_ie_len = elen;
- break;
- case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
- if (elen < 5) {
- wpa_printf(MSG_MSGDUMP, "short WME "
- "information element ignored "
- "(len=%lu)",
- (unsigned long) elen);
- return -1;
- }
- switch (pos[4]) {
- case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
- case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
- elems->wme = pos;
- elems->wme_len = elen;
- break;
- case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
- elems->wme_tspec = pos;
- elems->wme_tspec_len = elen;
- break;
- default:
- wpa_printf(MSG_MSGDUMP, "unknown WME "
- "information element ignored "
- "(subtype=%d len=%lu)",
- pos[4], (unsigned long) elen);
- return -1;
- }
- break;
- default:
- wpa_printf(MSG_MSGDUMP, "Unknown Microsoft "
- "information element ignored "
- "(type=%d len=%lu)\n",
- pos[3], (unsigned long) elen);
- return -1;
- }
- break;
-
- default:
- wpa_printf(MSG_MSGDUMP, "unknown vendor specific information "
- "element ignored (vendor OUI %02x:%02x:%02x "
- "len=%lu)",
- pos[0], pos[1], pos[2], (unsigned long) elen);
- return -1;
- }
-
- return 0;
-}
-
-
#ifdef CONFIG_IEEE80211W
static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
struct sta_info *sta, u8 *eid)
#endif /* CONFIG_IEEE80211W */
-ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems,
- int show_errors)
-{
- size_t left = len;
- u8 *pos = start;
- int unknown = 0;
-
- os_memset(elems, 0, sizeof(*elems));
-
- while (left >= 2) {
- u8 id, elen;
-
- id = *pos++;
- elen = *pos++;
- left -= 2;
-
- if (elen > left) {
- if (show_errors) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11 element "
- "parse failed (id=%d elen=%d "
- "left=%lu)",
- id, elen, (unsigned long) left);
- wpa_hexdump(MSG_MSGDUMP, "IEs", start, len);
- }
- return ParseFailed;
- }
-
- switch (id) {
- case WLAN_EID_SSID:
- elems->ssid = pos;
- elems->ssid_len = elen;
- break;
- case WLAN_EID_SUPP_RATES:
- elems->supp_rates = pos;
- elems->supp_rates_len = elen;
- break;
- case WLAN_EID_FH_PARAMS:
- elems->fh_params = pos;
- elems->fh_params_len = elen;
- break;
- case WLAN_EID_DS_PARAMS:
- elems->ds_params = pos;
- elems->ds_params_len = elen;
- break;
- case WLAN_EID_CF_PARAMS:
- elems->cf_params = pos;
- elems->cf_params_len = elen;
- break;
- case WLAN_EID_TIM:
- elems->tim = pos;
- elems->tim_len = elen;
- break;
- case WLAN_EID_IBSS_PARAMS:
- elems->ibss_params = pos;
- elems->ibss_params_len = elen;
- break;
- case WLAN_EID_CHALLENGE:
- elems->challenge = pos;
- elems->challenge_len = elen;
- break;
- case WLAN_EID_ERP_INFO:
- elems->erp_info = pos;
- elems->erp_info_len = elen;
- break;
- case WLAN_EID_EXT_SUPP_RATES:
- elems->ext_supp_rates = pos;
- elems->ext_supp_rates_len = elen;
- break;
- case WLAN_EID_VENDOR_SPECIFIC:
- if (ieee802_11_parse_vendor_specific(pos, elen,
- elems,
- show_errors))
- unknown++;
- break;
- case WLAN_EID_RSN:
- elems->rsn_ie = pos;
- elems->rsn_ie_len = elen;
- break;
- case WLAN_EID_PWR_CAPABILITY:
- elems->power_cap = pos;
- elems->power_cap_len = elen;
- break;
- case WLAN_EID_SUPPORTED_CHANNELS:
- elems->supp_channels = pos;
- elems->supp_channels_len = elen;
- break;
- case WLAN_EID_MOBILITY_DOMAIN:
- elems->mdie = pos;
- elems->mdie_len = elen;
- break;
- case WLAN_EID_FAST_BSS_TRANSITION:
- elems->ftie = pos;
- elems->ftie_len = elen;
- break;
- case WLAN_EID_HT_CAP:
- elems->ht_capabilities = pos;
- elems->ht_capabilities_len = elen;
- break;
- case WLAN_EID_HT_OPERATION:
- elems->ht_operation = pos;
- elems->ht_operation_len = elen;
- break;
- default:
- unknown++;
- if (!show_errors)
- break;
- wpa_printf(MSG_MSGDUMP, "IEEE 802.11 element parse "
- "ignored unknown element (id=%d elen=%d)",
- id, elen);
- break;
- }
-
- left -= elen;
- pos += elen;
- }
-
- if (left)
- return ParseFailed;
-
- return unknown ? ParseUnknown : ParseOK;
-}
-
-
void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
{
int i;
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