LineageOS/android_packages_modules_Connectivity
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Don't crash Tethering service when WiFi feature is missing

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Bug: 175430552
Test: disable WiFi feature on device with wlan0

Change-Id: I83012013ff6a276d9a5c70748b726289b007cb0a
This commit is contained in:
Tomasz Wasilczyk
2021-01-26 08:46:14 -08:00
parent c0bae3c8c5
commit f6a1052f4e
1 changed files with 20 additions and 5 deletions
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25
Tethering/src/com/android/networkstack/tethering/Tethering.java
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@@ -1689,12 +1689,14 @@ public class Tethering {
// If this is a Wi-Fi interface, tell WifiManager of any errors
// or the inactive serving state.
if (who.interfaceType() == TETHERING_WIFI) {
if (who.lastError() != TETHER_ERROR_NO_ERROR) {
getWifiManager().updateInterfaceIpState(
who.interfaceName(), IFACE_IP_MODE_CONFIGURATION_ERROR);
final WifiManager mgr = getWifiManager();
final String iface = who.interfaceName();
if (mgr == null) {
Log.wtf(TAG, "Skipping WifiManager notification about inactive tethering");
} else if (who.lastError() != TETHER_ERROR_NO_ERROR) {
mgr.updateInterfaceIpState(iface, IFACE_IP_MODE_CONFIGURATION_ERROR);
} else {
getWifiManager().updateInterfaceIpState(
who.interfaceName(), IFACE_IP_MODE_UNSPECIFIED);
mgr.updateInterfaceIpState(iface, IFACE_IP_MODE_UNSPECIFIED);
}
}
}
@@ -2421,6 +2423,19 @@ public class Tethering {
mLog.log(iface + " is not a tetherable iface, ignoring");
return;
}
final PackageManager pm = mContext.getPackageManager();
if ((interfaceType == TETHERING_WIFI || interfaceType == TETHERING_WIGIG)
&& !pm.hasSystemFeature(PackageManager.FEATURE_WIFI)) {
mLog.log(iface + " is not tetherable, because WiFi feature is disabled");
return;
}
if (interfaceType == TETHERING_WIFI_P2P
&& !pm.hasSystemFeature(PackageManager.FEATURE_WIFI_DIRECT)) {
mLog.log(iface + " is not tetherable, because WiFi Direct feature is disabled");
return;
}
maybeTrackNewInterfaceLocked(iface, interfaceType);
}