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ie: parse operating class/channel for ie_owe_transition_info

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James Prestwood 2021-09-22 12:34:15 -07:00 committed by Denis Kenzior
parent e90356285b
commit ea16ade5e0
2 changed files with 18 additions and 11 deletions
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27
src/ie.c
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@ -2504,6 +2504,10 @@ int ie_parse_owe_transition(const void *data, size_t len,
struct ie_owe_transition_info *info)
{
const uint8_t *ie = data;
const uint8_t *bssid;
const uint8_t *ssid;
uint8_t oper_class = 0;
uint8_t channel = 0;
size_t slen;
if (len < 14 || ie[0] != IE_TYPE_VENDOR_SPECIFIC)
@ -2521,22 +2525,23 @@ int ie_parse_owe_transition(const void *data, size_t len,
*
* "Band Info and Channel Info are optional fields. If configured,
* both fields shall be included in an OWE Transition Mode element"
*
* TODO: Support Band/Channel bytes:
* For the time being the OWE transition AP is assumed to be on the same
* channel as the open AP. This means there should be no band/channel
* bytes at the end of the IE. Currently hostapd has no support for this
* so it can be skipped. In addition 802.11 Appendix E-1 needs to be
* encoded as a table to map Country/operating class to channels to make
* any sense of it.
*/
if (len != slen + 13)
if (len != slen + 13 && len != slen + 15)
return -ENOMSG;
memcpy(info->bssid, ie + 6, 6);
bssid = ie + 6;
ssid = ie + 13;
memcpy(info->ssid, ie + 13, slen);
if (len == slen + 15) {
oper_class = l_get_u8(ie + 13 + slen);
channel = l_get_u8(ie + 14 + slen);
}
memcpy(info->bssid, bssid, 6);
memcpy(info->ssid, ssid, slen);
info->ssid_len = slen;
info->oper_class = oper_class;
info->channel = channel;
return 0;
}

2
src/ie.h
View File

@ -493,6 +493,8 @@ struct ie_owe_transition_info {
uint8_t bssid[6];
uint8_t ssid[32];
size_t ssid_len;
uint8_t oper_class;
uint8_t channel;
};
extern const unsigned char ieee_oui[3];