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P2P: Check Device ID match in Probe Request frames in Listen state

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Do not reply to Probe Request frames that include a Device ID that
does not match with our own P2P Device Address.
This commit is contained in:
Jouni Malinen 2011-07-15 20:48:06 +03:00
parent 04a85e4401
commit 97c5b3c45b
1 changed files with 20 additions and 7 deletions
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27
src/p2p/p2p.c
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@ -1651,7 +1651,7 @@ static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
struct ieee802_11_elems elems;
struct wpabuf *buf;
struct ieee80211_mgmt *resp;
struct wpabuf *wps;
struct p2p_message msg;
struct wpabuf *ies;
if (!p2p->in_listen || !p2p->drv_in_listen) {
@ -1689,14 +1689,27 @@ static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
return;
}
/* Check Requested Device Type match */
wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
if (wps && !p2p_match_dev_type(p2p, wps)) {
wpabuf_free(wps);
/* No match with Requested Device Type */
os_memset(&msg, 0, sizeof(msg));
if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
/* Could not parse P2P attributes */
return;
}
wpabuf_free(wps);
if (msg.device_id &&
os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN != 0)) {
/* Device ID did not match */
p2p_parse_free(&msg);
return;
}
/* Check Requested Device Type match */
if (msg.wps_attributes &&
!p2p_match_dev_type(p2p, msg.wps_attributes)) {
/* No match with Requested Device Type */
p2p_parse_free(&msg);
return;
}
p2p_parse_free(&msg);
if (!p2p->cfg->send_probe_resp)
return; /* Response generated elsewhere */