The Tor Browser / file comparison
comparison: mobile/android/base/background/fxa/SkewHandler.java
mobile/android/base/background/fxa/SkewHandler.java
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:b6ffa108b4ba |
|---|---|
| 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.background.fxa; | |
| 6 | |
| 7 import java.net.URI; | |
| 8 import java.net.URISyntaxException; | |
| 9 import java.util.HashMap; | |
| 10 | |
| 11 import org.mozilla.gecko.background.common.log.Logger; | |
| 12 import org.mozilla.gecko.sync.net.Resource; | |
| 13 | |
| 14 import ch.boye.httpclientandroidlib.Header; | |
| 15 import ch.boye.httpclientandroidlib.HttpHeaders; | |
| 16 import ch.boye.httpclientandroidlib.HttpResponse; | |
| 17 import ch.boye.httpclientandroidlib.impl.cookie.DateParseException; | |
| 18 import ch.boye.httpclientandroidlib.impl.cookie.DateUtils; | |
| 19 | |
| 20 public class SkewHandler { | |
| 21 private static final String LOG_TAG = "SkewHandler"; | |
| 22 protected volatile long skewMillis = 0L; | |
| 23 protected final String hostname; | |
| 24 | |
| 25 private static final HashMap<String, SkewHandler> skewHandlers = new HashMap<String, SkewHandler>(); | |
| 26 | |
| 27 public static SkewHandler getSkewHandlerForResource(final Resource resource) { | |
| 28 return getSkewHandlerForHostname(resource.getHostname()); | |
| 29 } | |
| 30 | |
| 31 public static SkewHandler getSkewHandlerFromEndpointString(final String url) throws URISyntaxException { | |
| 32 if (url == null) { | |
| 33 throw new IllegalArgumentException("url must not be null."); | |
| 34 } | |
| 35 URI u = new URI(url); | |
| 36 return getSkewHandlerForHostname(u.getHost()); | |
| 37 } | |
| 38 | |
| 39 public static synchronized SkewHandler getSkewHandlerForHostname(final String hostname) { | |
| 40 SkewHandler handler = skewHandlers.get(hostname); | |
| 41 if (handler == null) { | |
| 42 handler = new SkewHandler(hostname); | |
| 43 skewHandlers.put(hostname, handler); | |
| 44 } | |
| 45 return handler; | |
| 46 } | |
| 47 | |
| 48 public static synchronized void clearSkewHandlers() { | |
| 49 skewHandlers.clear(); | |
| 50 } | |
| 51 | |
| 52 public SkewHandler(final String hostname) { | |
| 53 this.hostname = hostname; | |
| 54 } | |
| 55 | |
| 56 public boolean updateSkewFromServerMillis(long millis, long now) { | |
| 57 skewMillis = millis - now; | |
| 58 Logger.debug(LOG_TAG, "Updated skew: " + skewMillis + "ms for hostname " + this.hostname); | |
| 59 return true; | |
| 60 } | |
| 61 | |
| 62 public boolean updateSkewFromHTTPDateString(String date, long now) { | |
| 63 try { | |
| 64 final long millis = DateUtils.parseDate(date).getTime(); | |
| 65 return updateSkewFromServerMillis(millis, now); | |
| 66 } catch (DateParseException e) { | |
| 67 Logger.warn(LOG_TAG, "Unexpected: invalid Date header from " + this.hostname); | |
| 68 return false; | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 public boolean updateSkewFromDateHeader(Header header, long now) { | |
| 73 String date = header.getValue(); | |
| 74 if (null == date) { | |
| 75 Logger.warn(LOG_TAG, "Unexpected: null Date header from " + this.hostname); | |
| 76 return false; | |
| 77 } | |
| 78 return updateSkewFromHTTPDateString(date, now); | |
| 79 } | |
| 80 | |
| 81 /** | |
| 82 * Update our tracked skew value to account for the local clock differing from | |
| 83 * the server's. | |
| 84 * | |
| 85 * @param response | |
| 86 * the received HTTP response. | |
| 87 * @param now | |
| 88 * the current time in milliseconds. | |
| 89 * @return true if the skew value was updated, false otherwise. | |
| 90 */ | |
| 91 public boolean updateSkew(HttpResponse response, long now) { | |
| 92 Header header = response.getFirstHeader(HttpHeaders.DATE); | |
| 93 if (null == header) { | |
| 94 Logger.warn(LOG_TAG, "Unexpected: missing Date header from " + this.hostname); | |
| 95 return false; | |
| 96 } | |
| 97 return updateSkewFromDateHeader(header, now); | |
| 98 } | |
| 99 | |
| 100 public long getSkewInMillis() { | |
| 101 return skewMillis; | |
| 102 } | |
| 103 | |
| 104 public long getSkewInSeconds() { | |
| 105 return skewMillis / 1000; | |
| 106 } | |
| 107 | |
| 108 public void resetSkew() { | |
| 109 skewMillis = 0L; | |
| 110 } | |
| 111 } |
