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wsc: store plain text passphrase if available

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If the AP sent us the plain passphrase we can now store that rather
than generating the PSK. This will allow WPA3 to work properly when
WPA3 + WSC is implemented.
This commit is contained in:
James Prestwood 2019-09-18 09:02:56 -07:00 committed by Denis Kenzior
parent 2c14e73f82
commit 7a9891dbef
1 changed files with 27 additions and 16 deletions
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43
src/wsc.c
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@ -63,8 +63,12 @@ struct wsc {
struct {
char ssid[33];
enum security security;
uint8_t psk[32];
union {
uint8_t psk[32];
char passphrase[64];
};
uint8_t addr[6];
bool has_passphrase;
} creds[3];
uint32_t n_creds;
struct l_settings *eap_settings;
@ -132,9 +136,24 @@ static void wsc_try_credentials(struct wsc *wsc)
if (!bss)
continue;
if (wsc->creds[i].security == SECURITY_PSK &&
!network_set_psk(network, wsc->creds[i].psk))
continue;
if (wsc->creds[i].security == SECURITY_PSK) {
bool ret;
/*
* Prefer setting passphrase, this will work for both
* WPA2 and WPA3 since the PSK can always be generated
* if needed
*/
if (wsc->creds[i].has_passphrase)
ret = network_set_passphrase(network,
wsc->creds[i].passphrase);
else
ret = network_set_psk(network,
wsc->creds[i].psk);
if (!ret)
continue;
}
station_connect_network(wsc->station, network, bss,
wsc->pending);
@ -315,18 +334,10 @@ static void wsc_credential_obtained(struct wsc *wsc,
explicit_bzero(decoded, 32);
l_free(decoded);
} else {
const char *passphrase =
(const char *) cred->network_key;
/*
* wscutil should memset cred->network_key to 0 prior
* to copying in the contents of the passphrase
*/
if (crypto_psk_from_passphrase(passphrase,
cred->ssid, cred->ssid_len,
wsc->creds[wsc->n_creds].psk) != 0) {
l_warn("Ignoring invalid passphrase");
return;
}
strncpy(wsc->creds[wsc->n_creds].passphrase,
(const char *) cred->network_key,
cred->network_key_len);
wsc->creds[wsc->n_creds].has_passphrase = true;
}
break;