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network: clear info of removed known network before disconnect

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Make sure to erase the network_info of a known network that has been
removed before disconnecting any stations connected to it. This fixes
the following warning observed when forgetting a connected network:

  WARNING: ../git/src/network.c:network_rank_update() condition n < 0 failed

This also fixes a bug where such a forgotten network would incorrectly
appear as the first element in the response to GetOrderedNetworks().  By
clearing the network_info, network_rank_update() properly negates the
rank of the now-unknown network.
This commit is contained in:
Alvin Šipraga 2020-11-27 16:04:58 +00:00 committed by Denis Kenzior
parent d8dc5a9bd1
commit b647f8e1f0
1 changed files with 10 additions and 18 deletions
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28
src/network.c
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@ -1444,22 +1444,26 @@ static void network_unset_hotspot(struct network *network, void *user_data)
network_set_info(network, NULL);
}
static void emit_known_network_changed(struct station *station, void *user_data)
static void emit_known_network_removed(struct station *station, void *user_data)
{
struct network_info *info = user_data;
struct network *connected_network;
struct network *network;
if (!info->is_hotspot) {
/* Clear network info, as this network is no longer known */
if (info->is_hotspot)
station_network_foreach(station, network_unset_hotspot, info);
else {
network = station_network_find(station, info->ssid, info->type);
if (!network)
return;
network_set_info(network, NULL);
return;
}
/* This is a removed hotspot */
station_network_foreach(station, network_unset_hotspot, info);
connected_network = station_get_connected_network(station);
if (connected_network && connected_network->info == NULL)
station_disconnect(station);
}
static void network_update_hotspot(struct network *network, void *user_data)
@ -1487,17 +1491,6 @@ static void match_known_network(struct station *station, void *user_data)
station_network_foreach(station, network_update_hotspot, info);
}
static void disconnect_no_longer_known(struct station *station, void *user_data)
{
struct network_info *info = user_data;
struct network *network;
network = station_get_connected_network(station);
if (network && network->info == info)
station_disconnect(station);
}
static void known_networks_changed(enum known_networks_event event,
const struct network_info *info,
void *user_data)
@ -1510,8 +1503,7 @@ static void known_networks_changed(enum known_networks_event event,
known_network_frequency_sync((struct network_info *)info);
break;
case KNOWN_NETWORKS_EVENT_REMOVED:
station_foreach(disconnect_no_longer_known, (void *) info);
station_foreach(emit_known_network_changed, (void *) info);
station_foreach(emit_known_network_removed, (void *) info);
break;
}
}