The Tor Browser / file comparison
comparison: mobile/android/base/fxa/login/FxAccountLoginStateMachine.java
mobile/android/base/fxa/login/FxAccountLoginStateMachine.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
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replaced
| -1:000000000000 | 0:5b772c3f6edc |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 package org.mozilla.gecko.fxa.login; | |
| 6 | |
| 7 import java.security.NoSuchAlgorithmException; | |
| 8 import java.util.HashSet; | |
| 9 import java.util.Set; | |
| 10 | |
| 11 import org.mozilla.gecko.background.fxa.FxAccountClient; | |
| 12 import org.mozilla.gecko.browserid.BrowserIDKeyPair; | |
| 13 import org.mozilla.gecko.fxa.login.FxAccountLoginTransition.Transition; | |
| 14 import org.mozilla.gecko.fxa.login.State.StateLabel; | |
| 15 | |
| 16 public class FxAccountLoginStateMachine { | |
| 17 public static final String LOG_TAG = FxAccountLoginStateMachine.class.getSimpleName(); | |
| 18 | |
| 19 public interface LoginStateMachineDelegate { | |
| 20 public FxAccountClient getClient(); | |
| 21 public long getCertificateDurationInMilliseconds(); | |
| 22 public long getAssertionDurationInMilliseconds(); | |
| 23 public void handleTransition(Transition transition, State state); | |
| 24 public void handleFinal(State state); | |
| 25 public BrowserIDKeyPair generateKeyPair() throws NoSuchAlgorithmException; | |
| 26 } | |
| 27 | |
| 28 public static class ExecuteDelegate { | |
| 29 protected final LoginStateMachineDelegate delegate; | |
| 30 protected final StateLabel desiredStateLabel; | |
| 31 // It's as difficult to detect arbitrary cycles as repeated states. | |
| 32 protected final Set<StateLabel> stateLabelsSeen = new HashSet<StateLabel>(); | |
| 33 | |
| 34 protected ExecuteDelegate(StateLabel initialStateLabel, StateLabel desiredStateLabel, LoginStateMachineDelegate delegate) { | |
| 35 this.delegate = delegate; | |
| 36 this.desiredStateLabel = desiredStateLabel; | |
| 37 this.stateLabelsSeen.add(initialStateLabel); | |
| 38 } | |
| 39 | |
| 40 public FxAccountClient getClient() { | |
| 41 return delegate.getClient(); | |
| 42 } | |
| 43 | |
| 44 public long getCertificateDurationInMilliseconds() { | |
| 45 return delegate.getCertificateDurationInMilliseconds(); | |
| 46 } | |
| 47 | |
| 48 public long getAssertionDurationInMilliseconds() { | |
| 49 return delegate.getAssertionDurationInMilliseconds(); | |
| 50 } | |
| 51 | |
| 52 public BrowserIDKeyPair generateKeyPair() throws NoSuchAlgorithmException { | |
| 53 return delegate.generateKeyPair(); | |
| 54 } | |
| 55 | |
| 56 public void handleTransition(Transition transition, State state) { | |
| 57 // Always trigger the transition callback. | |
| 58 delegate.handleTransition(transition, state); | |
| 59 | |
| 60 // Possibly trigger the final callback. We trigger if we're at our desired | |
| 61 // state, or if we've seen this state before. | |
| 62 StateLabel stateLabel = state.getStateLabel(); | |
| 63 if (stateLabel == desiredStateLabel || stateLabelsSeen.contains(stateLabel)) { | |
| 64 delegate.handleFinal(state); | |
| 65 return; | |
| 66 } | |
| 67 | |
| 68 // If this wasn't the last state, leave a bread crumb and move on to the | |
| 69 // next state. | |
| 70 stateLabelsSeen.add(stateLabel); | |
| 71 state.execute(this); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 public void advance(State initialState, final StateLabel desiredStateLabel, final LoginStateMachineDelegate delegate) { | |
| 76 if (initialState.getStateLabel() == desiredStateLabel) { | |
| 77 // We're already where we want to be! | |
| 78 delegate.handleFinal(initialState); | |
| 79 return; | |
| 80 } | |
| 81 ExecuteDelegate executeDelegate = new ExecuteDelegate(initialState.getStateLabel(), desiredStateLabel, delegate); | |
| 82 initialState.execute(executeDelegate); | |
| 83 } | |
| 84 } |
