SupplicantStateTrackerpublic class SupplicantStateTracker extends com.android.internal.util.StateMachine | Tracks the state changes in supplicant and provides functionality
that is based on these state changes:
- detect a failed WPA handshake that loops indefinitely
- authentication failure handling |
| Fields Summary |
|---|
| private static final String | TAG | | private static boolean | DBG | | private final WifiStateMachine | mWifiStateMachine | | private final WifiConfigStore | mWifiConfigStore | | private final com.android.internal.app.IBatteryStats | mBatteryStats | | private int | mAuthenticationFailuresCount | | private int | mAssociationRejectCount | | private boolean | mAuthFailureInSupplicantBroadcast | | private static final int | MAX_RETRIES_ON_AUTHENTICATION_FAILURE | | private static final int | MAX_RETRIES_ON_ASSOCIATION_REJECT | | private boolean | mNetworksDisabledDuringConnect | | private final android.content.Context | mContext | | private final com.android.internal.util.State | mUninitializedState | | private final com.android.internal.util.State | mDefaultState | | private final com.android.internal.util.State | mInactiveState | | private final com.android.internal.util.State | mDisconnectState | | private final com.android.internal.util.State | mScanState | | private final com.android.internal.util.State | mHandshakeState | | private final com.android.internal.util.State | mCompletedState | | private final com.android.internal.util.State | mDormantState |
| Constructors Summary |
|---|
public SupplicantStateTracker(android.content.Context c, WifiStateMachine wsm, WifiConfigStore wcs, android.os.Handler t)
super(TAG, t.getLooper());
mContext = c;
mWifiStateMachine = wsm;
mWifiConfigStore = wcs;
mBatteryStats = (IBatteryStats)ServiceManager.getService(BatteryStats.SERVICE_NAME);
addState(mDefaultState);
addState(mUninitializedState, mDefaultState);
addState(mInactiveState, mDefaultState);
addState(mDisconnectState, mDefaultState);
addState(mScanState, mDefaultState);
addState(mHandshakeState, mDefaultState);
addState(mCompletedState, mDefaultState);
addState(mDormantState, mDefaultState);
setInitialState(mUninitializedState);
setLogRecSize(50);
setLogOnlyTransitions(true);
//start the state machine
start();
|
| Methods Summary |
|---|
| public void | dump(java.io.FileDescriptor fd, java.io.PrintWriter pw, java.lang.String[] args)
super.dump(fd, pw, args);
pw.println("mAuthenticationFailuresCount " + mAuthenticationFailuresCount);
pw.println("mAuthFailureInSupplicantBroadcast " + mAuthFailureInSupplicantBroadcast);
pw.println("mNetworksDisabledDuringConnect " + mNetworksDisabledDuringConnect);
pw.println();
| | void | enableVerboseLogging(int verbose)
if (verbose > 0) {
DBG = true;
} else {
DBG = false;
}
| | public java.lang.String | getSupplicantStateName()
return getCurrentState().getName();
| | private void | handleNetworkConnectionFailure(int netId, int disableReason)
if (DBG) {
Log.d(TAG, "handleNetworkConnectionFailure netId=" + Integer.toString(netId)
+ " reason " + Integer.toString(disableReason)
+ " mNetworksDisabledDuringConnect=" + mNetworksDisabledDuringConnect);
}
/* If other networks disabled during connection, enable them */
if (mNetworksDisabledDuringConnect) {
mWifiConfigStore.enableAllNetworks();
mNetworksDisabledDuringConnect = false;
}
/* Disable failed network */
mWifiConfigStore.disableNetwork(netId, disableReason);
| | private void | sendSupplicantStateChangedBroadcast(android.net.wifi.SupplicantState state, boolean failedAuth)
int supplState;
switch (state) {
case DISCONNECTED: supplState = BatteryStats.WIFI_SUPPL_STATE_DISCONNECTED; break;
case INTERFACE_DISABLED:
supplState = BatteryStats.WIFI_SUPPL_STATE_INTERFACE_DISABLED; break;
case INACTIVE: supplState = BatteryStats.WIFI_SUPPL_STATE_INACTIVE; break;
case SCANNING: supplState = BatteryStats.WIFI_SUPPL_STATE_SCANNING; break;
case AUTHENTICATING: supplState = BatteryStats.WIFI_SUPPL_STATE_AUTHENTICATING; break;
case ASSOCIATING: supplState = BatteryStats.WIFI_SUPPL_STATE_ASSOCIATING; break;
case ASSOCIATED: supplState = BatteryStats.WIFI_SUPPL_STATE_ASSOCIATED; break;
case FOUR_WAY_HANDSHAKE:
supplState = BatteryStats.WIFI_SUPPL_STATE_FOUR_WAY_HANDSHAKE; break;
case GROUP_HANDSHAKE: supplState = BatteryStats.WIFI_SUPPL_STATE_GROUP_HANDSHAKE; break;
case COMPLETED: supplState = BatteryStats.WIFI_SUPPL_STATE_COMPLETED; break;
case DORMANT: supplState = BatteryStats.WIFI_SUPPL_STATE_DORMANT; break;
case UNINITIALIZED: supplState = BatteryStats.WIFI_SUPPL_STATE_UNINITIALIZED; break;
case INVALID: supplState = BatteryStats.WIFI_SUPPL_STATE_INVALID; break;
default:
Slog.w(TAG, "Unknown supplicant state " + state);
supplState = BatteryStats.WIFI_SUPPL_STATE_INVALID;
break;
}
try {
mBatteryStats.noteWifiSupplicantStateChanged(supplState, failedAuth);
} catch (RemoteException e) {
// Won't happen.
}
Intent intent = new Intent(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT
| Intent.FLAG_RECEIVER_REPLACE_PENDING);
intent.putExtra(WifiManager.EXTRA_NEW_STATE, (Parcelable) state);
if (failedAuth) {
intent.putExtra(
WifiManager.EXTRA_SUPPLICANT_ERROR,
WifiManager.ERROR_AUTHENTICATING);
}
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
| | private void | transitionOnSupplicantStateChange(StateChangeResult stateChangeResult)
SupplicantState supState = (SupplicantState) stateChangeResult.state;
if (DBG) Log.d(TAG, "Supplicant state: " + supState.toString() + "\n");
switch (supState) {
case DISCONNECTED:
transitionTo(mDisconnectState);
break;
case INTERFACE_DISABLED:
//we should have received a disconnection already, do nothing
break;
case SCANNING:
transitionTo(mScanState);
break;
case AUTHENTICATING:
case ASSOCIATING:
case ASSOCIATED:
case FOUR_WAY_HANDSHAKE:
case GROUP_HANDSHAKE:
transitionTo(mHandshakeState);
break;
case COMPLETED:
transitionTo(mCompletedState);
break;
case DORMANT:
transitionTo(mDormantState);
break;
case INACTIVE:
transitionTo(mInactiveState);
break;
case UNINITIALIZED:
case INVALID:
transitionTo(mUninitializedState);
break;
default:
Log.e(TAG, "Unknown supplicant state " + supState);
break;
}
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