mobile/android/base/fxa/login/FxAccountLoginStateMachine.java@6474c204b198 (annotated)
mobile/android/base/fxa/login/FxAccountLoginStateMachine.java
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | package org.mozilla.gecko.fxa.login; |
| michael@0 | 6 | |
| michael@0 | 7 | import java.security.NoSuchAlgorithmException; |
| michael@0 | 8 | import java.util.HashSet; |
| michael@0 | 9 | import java.util.Set; |
| michael@0 | 10 | |
| michael@0 | 11 | import org.mozilla.gecko.background.fxa.FxAccountClient; |
| michael@0 | 12 | import org.mozilla.gecko.browserid.BrowserIDKeyPair; |
| michael@0 | 13 | import org.mozilla.gecko.fxa.login.FxAccountLoginTransition.Transition; |
| michael@0 | 14 | import org.mozilla.gecko.fxa.login.State.StateLabel; |
| michael@0 | 15 | |
| michael@0 | 16 | public class FxAccountLoginStateMachine { |
| michael@0 | 17 | public static final String LOG_TAG = FxAccountLoginStateMachine.class.getSimpleName(); |
| michael@0 | 18 | |
| michael@0 | 19 | public interface LoginStateMachineDelegate { |
| michael@0 | 20 | public FxAccountClient getClient(); |
| michael@0 | 21 | public long getCertificateDurationInMilliseconds(); |
| michael@0 | 22 | public long getAssertionDurationInMilliseconds(); |
| michael@0 | 23 | public void handleTransition(Transition transition, State state); |
| michael@0 | 24 | public void handleFinal(State state); |
| michael@0 | 25 | public BrowserIDKeyPair generateKeyPair() throws NoSuchAlgorithmException; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | public static class ExecuteDelegate { |
| michael@0 | 29 | protected final LoginStateMachineDelegate delegate; |
| michael@0 | 30 | protected final StateLabel desiredStateLabel; |
| michael@0 | 31 | // It's as difficult to detect arbitrary cycles as repeated states. |
| michael@0 | 32 | protected final Set<StateLabel> stateLabelsSeen = new HashSet<StateLabel>(); |
| michael@0 | 33 | |
| michael@0 | 34 | protected ExecuteDelegate(StateLabel initialStateLabel, StateLabel desiredStateLabel, LoginStateMachineDelegate delegate) { |
| michael@0 | 35 | this.delegate = delegate; |
| michael@0 | 36 | this.desiredStateLabel = desiredStateLabel; |
| michael@0 | 37 | this.stateLabelsSeen.add(initialStateLabel); |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | public FxAccountClient getClient() { |
| michael@0 | 41 | return delegate.getClient(); |
| michael@0 | 42 | } |
| michael@0 | 43 | |
| michael@0 | 44 | public long getCertificateDurationInMilliseconds() { |
| michael@0 | 45 | return delegate.getCertificateDurationInMilliseconds(); |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | public long getAssertionDurationInMilliseconds() { |
| michael@0 | 49 | return delegate.getAssertionDurationInMilliseconds(); |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | public BrowserIDKeyPair generateKeyPair() throws NoSuchAlgorithmException { |
| michael@0 | 53 | return delegate.generateKeyPair(); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | public void handleTransition(Transition transition, State state) { |
| michael@0 | 57 | // Always trigger the transition callback. |
| michael@0 | 58 | delegate.handleTransition(transition, state); |
| michael@0 | 59 | |
| michael@0 | 60 | // Possibly trigger the final callback. We trigger if we're at our desired |
| michael@0 | 61 | // state, or if we've seen this state before. |
| michael@0 | 62 | StateLabel stateLabel = state.getStateLabel(); |
| michael@0 | 63 | if (stateLabel == desiredStateLabel || stateLabelsSeen.contains(stateLabel)) { |
| michael@0 | 64 | delegate.handleFinal(state); |
| michael@0 | 65 | return; |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | // If this wasn't the last state, leave a bread crumb and move on to the |
| michael@0 | 69 | // next state. |
| michael@0 | 70 | stateLabelsSeen.add(stateLabel); |
| michael@0 | 71 | state.execute(this); |
| michael@0 | 72 | } |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | public void advance(State initialState, final StateLabel desiredStateLabel, final LoginStateMachineDelegate delegate) { |
| michael@0 | 76 | if (initialState.getStateLabel() == desiredStateLabel) { |
| michael@0 | 77 | // We're already where we want to be! |
| michael@0 | 78 | delegate.handleFinal(initialState); |
| michael@0 | 79 | return; |
| michael@0 | 80 | } |
| michael@0 | 81 | ExecuteDelegate executeDelegate = new ExecuteDelegate(initialState.getStateLabel(), desiredStateLabel, delegate); |
| michael@0 | 82 | initialState.execute(executeDelegate); |
| michael@0 | 83 | } |
| michael@0 | 84 | } |
