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dpp: use the config's SSID to process scan results

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The scan result handling was fragile because it assumed the kernel
would only give results matching the requested SSID. This isn't
something we should assume so instead keep the configuration object
around until after the scan and use the target SSID to lookup the
network.
This commit is contained in:
James Prestwood 2023-11-16 11:15:28 -08:00 committed by Denis Kenzior
parent fa14ac125e
commit 6a60cb5a32
1 changed files with 8 additions and 9 deletions
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17
src/dpp.c
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@ -856,7 +856,6 @@ static bool dpp_scan_results(int err, struct l_queue *bss_list,
struct dpp_sm *dpp = userdata;
struct station *station = station_find(netdev_get_ifindex(dpp->netdev));
struct scan_bss *bss;
char ssid[33];
struct network *network;
if (err < 0)
@ -872,18 +871,18 @@ static bool dpp_scan_results(int err, struct l_queue *bss_list,
if (L_WARN_ON(station_get_connected_network(station)))
goto reset;
/* Purely for grabbing the SSID */
bss = l_queue_peek_head(bss_list);
memcpy(ssid, bss->ssid, bss->ssid_len);
ssid[bss->ssid_len] = '\0';
station_set_scan_results(station, bss_list, freqs, false);
network = station_network_find(station, ssid, SECURITY_PSK);
network = station_network_find(station, dpp->config->ssid,
SECURITY_PSK);
dpp_reset(dpp);
if (!network) {
l_debug("Network was not found after scanning");
return true;
}
bss = network_bss_select(network, true);
network_autoconnect(network, bss);
@ -1084,7 +1083,7 @@ static void dpp_handle_config_response_frame(const struct mmpdu_header *frame,
dpp_scan_results, dpp,
dpp_scan_destroy);
if (dpp->connect_scan_id) {
dpp_configuration_free(config);
dpp->config = config;
return;
}
}