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| 1 | +/* |
| 2 | + * Copyright (c) 2015-present, Parse, LLC. |
| 3 | + * All rights reserved. |
| 4 | + * |
| 5 | + * This source code is licensed under the BSD-style license found in the |
| 6 | + * LICENSE file in the root directory of this source tree. An additional grant |
| 7 | + * of patent rights can be found in the PATENTS file in the same directory. |
| 8 | + */ |
| 9 | +package com.parse; |
| 10 | + |
| 11 | +import android.app.Service; |
| 12 | +import android.content.Context; |
| 13 | +import android.content.Intent; |
| 14 | +import android.support.annotation.NonNull; |
| 15 | +import android.support.annotation.Nullable; |
| 16 | +import android.support.annotation.WorkerThread; |
| 17 | + |
| 18 | +import org.json.JSONException; |
| 19 | +import org.json.JSONObject; |
| 20 | + |
| 21 | +import java.lang.ref.WeakReference; |
| 22 | +import java.util.concurrent.ExecutorService; |
| 23 | +import java.util.concurrent.Executors; |
| 24 | + |
| 25 | +import bolts.Task; |
| 26 | + |
| 27 | +/** |
| 28 | + * Proxy Service while running in GCM mode. |
| 29 | + * |
| 30 | + * We use an {@link ExecutorService} so that we can operate like a ghetto |
| 31 | + * {@link android.app.IntentService} where all incoming {@link Intent}s will be handled |
| 32 | + * sequentially. |
| 33 | + */ |
| 34 | +/** package */ class GcmPushHandler implements PushHandler { |
| 35 | + private static final String TAG = "GcmPushHandler"; |
| 36 | + |
| 37 | + static final String REGISTER_RESPONSE_ACTION = "com.google.android.c2dm.intent.REGISTRATION"; |
| 38 | + static final String RECEIVE_PUSH_ACTION = "com.google.android.c2dm.intent.RECEIVE"; |
| 39 | + |
| 40 | + GcmPushHandler() {} |
| 41 | + |
| 42 | + @NonNull |
| 43 | + @Override |
| 44 | + public SupportLevel isSupported() { |
| 45 | + if (!ManifestInfo.isGooglePlayServicesAvailable()) { |
| 46 | + return SupportLevel.MISSING_REQUIRED_DECLARATIONS; |
| 47 | + } |
| 48 | + return getManifestSupportLevel(); |
| 49 | + } |
| 50 | + |
| 51 | + private SupportLevel getManifestSupportLevel() { |
| 52 | + Context context = Parse.getApplicationContext(); |
| 53 | + String[] requiredPermissions = new String[] { |
| 54 | + "android.permission.INTERNET", |
| 55 | + "android.permission.ACCESS_NETWORK_STATE", |
| 56 | + "android.permission.WAKE_LOCK", |
| 57 | + "com.google.android.c2dm.permission.RECEIVE", |
| 58 | + context.getPackageName() + ".permission.C2D_MESSAGE" |
| 59 | + }; |
| 60 | + |
| 61 | + if (!ManifestInfo.hasRequestedPermissions(context, requiredPermissions)) { |
| 62 | + return SupportLevel.MISSING_REQUIRED_DECLARATIONS; |
| 63 | + } |
| 64 | + |
| 65 | + String packageName = context.getPackageName(); |
| 66 | + String rcvrPermission = "com.google.android.c2dm.permission.SEND"; |
| 67 | + Intent[] intents = new Intent[] { |
| 68 | + new Intent(GcmPushHandler.RECEIVE_PUSH_ACTION) |
| 69 | + .setPackage(packageName) |
| 70 | + .addCategory(packageName), |
| 71 | + new Intent(GcmPushHandler.REGISTER_RESPONSE_ACTION) |
| 72 | + .setPackage(packageName) |
| 73 | + .addCategory(packageName), |
| 74 | + }; |
| 75 | + |
| 76 | + if (!ManifestInfo.checkReceiver(GcmBroadcastReceiver.class, rcvrPermission, intents)) { |
| 77 | + return SupportLevel.MISSING_REQUIRED_DECLARATIONS; |
| 78 | + } |
| 79 | + |
| 80 | + String[] optionalPermissions = new String[] { |
| 81 | + "android.permission.VIBRATE" |
| 82 | + }; |
| 83 | + |
| 84 | + if (!ManifestInfo.hasGrantedPermissions(context, optionalPermissions)) { |
| 85 | + return SupportLevel.MISSING_OPTIONAL_DECLARATIONS; |
| 86 | + } |
| 87 | + |
| 88 | + return SupportLevel.SUPPORTED; |
| 89 | + } |
| 90 | + |
| 91 | + @Nullable |
| 92 | + @Override |
| 93 | + public String getWarningMessage(SupportLevel level) { |
| 94 | + switch (level) { |
| 95 | + case SUPPORTED: return null; |
| 96 | + case MISSING_OPTIONAL_DECLARATIONS: return "Using GCM for Parse Push, " + |
| 97 | + "but the app manifest is missing some optional " + |
| 98 | + "declarations that should be added for maximum reliability. Please " + |
| 99 | + getWarningMessage(); |
| 100 | + case MISSING_REQUIRED_DECLARATIONS: |
| 101 | + if (ManifestInfo.isGooglePlayServicesAvailable()) { |
| 102 | + return "Cannot use GCM for push because the app manifest is missing some " + |
| 103 | + "required declarations. Please " + getWarningMessage(); |
| 104 | + } else { |
| 105 | + return "Cannot use GCM for push on this device because Google Play " + |
| 106 | + "Services is not available. Install Google Play Services from the Play Store."; |
| 107 | + } |
| 108 | + } |
| 109 | + return null; |
| 110 | + } |
| 111 | + |
| 112 | + static String getWarningMessage() { |
| 113 | + String packageName = Parse.getApplicationContext().getPackageName(); |
| 114 | + String gcmPackagePermission = packageName + ".permission.C2D_MESSAGE"; |
| 115 | + return "make sure that these permissions are declared as children " + |
| 116 | + "of the root <manifest> element:\n" + |
| 117 | + "\n" + |
| 118 | + "<uses-permission android:name=\"android.permission.INTERNET\" />\n" + |
| 119 | + "<uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" />\n" + |
| 120 | + "<uses-permission android:name=\"android.permission.VIBRATE\" />\n" + |
| 121 | + "<uses-permission android:name=\"android.permission.WAKE_LOCK\" />\n" + |
| 122 | + "<uses-permission android:name=\"android.permission.GET_ACCOUNTS\" />\n" + |
| 123 | + "<uses-permission android:name=\"com.google.android.c2dm.permission.RECEIVE\" />\n" + |
| 124 | + "<permission android:name=\"" + gcmPackagePermission + "\" " + |
| 125 | + "android:protectionLevel=\"signature\" />\n" + |
| 126 | + "<uses-permission android:name=\"" + gcmPackagePermission + "\" />\n" + |
| 127 | + "\n" + |
| 128 | + "Also, please make sure that these services and broadcast receivers are declared as " + |
| 129 | + "children of the <application> element:\n" + |
| 130 | + "\n" + |
| 131 | + "<service android:name=\"com.parse.PushService\" />\n" + |
| 132 | + "<receiver android:name=\"com.parse.GcmBroadcastReceiver\" " + |
| 133 | + "android:permission=\"com.google.android.c2dm.permission.SEND\">\n" + |
| 134 | + " <intent-filter>\n" + |
| 135 | + " <action android:name=\"com.google.android.c2dm.intent.RECEIVE\" />\n" + |
| 136 | + " <action android:name=\"com.google.android.c2dm.intent.REGISTRATION\" />\n" + |
| 137 | + " <category android:name=\"" + packageName + "\" />\n" + |
| 138 | + " </intent-filter>\n" + |
| 139 | + "</receiver>\n" + |
| 140 | + "<receiver android:name=\"com.parse.ParsePushBroadcastReceiver\"" + |
| 141 | + " android:exported=false>\n" + |
| 142 | + " <intent-filter>\n" + |
| 143 | + " <action android:name=\"com.parse.push.intent.RECEIVE\" />\n" + |
| 144 | + " <action android:name=\"com.parse.push.intent.OPEN\" />\n" + |
| 145 | + " <action android:name=\"com.parse.push.intent.DELETE\" />\n" + |
| 146 | + " </intent-filter>\n" + |
| 147 | + "</receiver>"; |
| 148 | + } |
| 149 | + |
| 150 | + @Override |
| 151 | + public Task<Void> initialize() { |
| 152 | + return GcmRegistrar.getInstance().registerAsync(); |
| 153 | + } |
| 154 | + |
| 155 | + @WorkerThread |
| 156 | + @Override |
| 157 | + public void handlePush(Intent intent) { |
| 158 | + if (intent != null) { |
| 159 | + String action = intent.getAction(); |
| 160 | + if (REGISTER_RESPONSE_ACTION.equals(action)) { |
| 161 | + handleGcmRegistrationIntent(intent); |
| 162 | + } else if (RECEIVE_PUSH_ACTION.equals(action)) { |
| 163 | + handleGcmPushIntent(intent); |
| 164 | + } else { |
| 165 | + PLog.e(TAG, "PushService got unknown intent in GCM mode: " + intent); |
| 166 | + } |
| 167 | + } |
| 168 | + } |
| 169 | + |
| 170 | + @WorkerThread |
| 171 | + private void handleGcmRegistrationIntent(Intent intent) { |
| 172 | + try { |
| 173 | + // Have to block here since we are already in a background thread and as soon as we return, |
| 174 | + // PushService may exit. |
| 175 | + GcmRegistrar.getInstance().handleRegistrationIntentAsync(intent).waitForCompletion(); |
| 176 | + } catch (InterruptedException e) { |
| 177 | + // do nothing |
| 178 | + } |
| 179 | + } |
| 180 | + |
| 181 | + @WorkerThread |
| 182 | + private void handleGcmPushIntent(Intent intent) { |
| 183 | + String messageType = intent.getStringExtra("message_type"); |
| 184 | + if (messageType != null) { |
| 185 | + /* |
| 186 | + * The GCM docs reserve the right to use the message_type field for new actions, but haven't |
| 187 | + * documented what those new actions are yet. For forwards compatibility, ignore anything |
| 188 | + * with a message_type field. |
| 189 | + */ |
| 190 | + PLog.i(TAG, "Ignored special message type " + messageType + " from GCM via intent " + intent); |
| 191 | + } else { |
| 192 | + String pushId = intent.getStringExtra("push_id"); |
| 193 | + String timestamp = intent.getStringExtra("time"); |
| 194 | + String dataString = intent.getStringExtra("data"); |
| 195 | + String channel = intent.getStringExtra("channel"); |
| 196 | + |
| 197 | + JSONObject data = null; |
| 198 | + if (dataString != null) { |
| 199 | + try { |
| 200 | + data = new JSONObject(dataString); |
| 201 | + } catch (JSONException e) { |
| 202 | + PLog.e(TAG, "Ignoring push because of JSON exception while processing: " + dataString, e); |
| 203 | + return; |
| 204 | + } |
| 205 | + } |
| 206 | + |
| 207 | + PushRouter.getInstance().handlePush(pushId, timestamp, channel, data); |
| 208 | + } |
| 209 | + } |
| 210 | + |
| 211 | +} |
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