Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License |
| 15 | */ |
| 16 | |
| 17 | package android.net; |
| 18 | |
| 19 | import android.Manifest.permission; |
Jeff Davidson | b6646a8 | 2014-06-27 16:24:42 -0700 | [diff] [blame] | 20 | import android.annotation.Nullable; |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 21 | import android.content.ContentResolver; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 22 | import android.content.Context; |
| 23 | import android.content.Intent; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 24 | import android.content.pm.PackageManager; |
| 25 | import android.content.pm.ResolveInfo; |
Jeff Davidson | ac7285d | 2014-08-08 15:12:47 -0700 | [diff] [blame] | 26 | import android.os.UserHandle; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 27 | import android.provider.Settings; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 28 | import android.text.TextUtils; |
Jeff Davidson | 6a4b220 | 2014-04-16 17:29:40 -0700 | [diff] [blame] | 29 | import android.util.Log; |
Jeremy Joslin | 9b442fa | 2017-01-09 16:22:20 -0800 | [diff] [blame] | 30 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 31 | import com.android.internal.R; |
Jeremy Joslin | 9b442fa | 2017-01-09 16:22:20 -0800 | [diff] [blame] | 32 | |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 33 | import java.util.ArrayList; |
Jeremy Joslin | 5b294b4 | 2015-12-17 17:38:04 -0800 | [diff] [blame] | 34 | import java.util.Collections; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 35 | import java.util.List; |
| 36 | |
| 37 | /** |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 38 | * Internal class for discovering and managing the network scorer/recommendation application. |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 39 | * |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 40 | * @hide |
| 41 | */ |
Amin Shaikh | aa09aa0 | 2016-11-21 17:27:53 -0800 | [diff] [blame] | 42 | public class NetworkScorerAppManager { |
Jeff Davidson | 6a4b220 | 2014-04-16 17:29:40 -0700 | [diff] [blame] | 43 | private static final String TAG = "NetworkScorerAppManager"; |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 44 | private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| 45 | private static final boolean VERBOSE = Log.isLoggable(TAG, Log.VERBOSE); |
Amin Shaikh | aa09aa0 | 2016-11-21 17:27:53 -0800 | [diff] [blame] | 46 | private final Context mContext; |
| 47 | |
| 48 | public NetworkScorerAppManager(Context context) { |
| 49 | mContext = context; |
| 50 | } |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 51 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 52 | /** |
| 53 | * Holds metadata about a discovered network scorer/recommendation application. |
| 54 | */ |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 55 | public static class NetworkScorerAppData { |
| 56 | /** Package name of this scorer app. */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 57 | public final String packageName; |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 58 | |
Shirish Kalele | 4cab12d | 2015-08-06 12:34:22 -0700 | [diff] [blame] | 59 | /** UID of the scorer app. */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 60 | public final int packageUid; |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 61 | |
Jeff Davidson | b6646a8 | 2014-06-27 16:24:42 -0700 | [diff] [blame] | 62 | /** |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 63 | * Name of the recommendation service we can bind to. |
Jeff Davidson | b6646a8 | 2014-06-27 16:24:42 -0700 | [diff] [blame] | 64 | */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 65 | public final String recommendationServiceClassName; |
Jeff Davidson | b6646a8 | 2014-06-27 16:24:42 -0700 | [diff] [blame] | 66 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 67 | public NetworkScorerAppData(String packageName, int packageUid, |
| 68 | String recommendationServiceClassName) { |
| 69 | this.packageName = packageName; |
| 70 | this.packageUid = packageUid; |
| 71 | this.recommendationServiceClassName = recommendationServiceClassName; |
Jeremy Joslin | dd251ef | 2016-03-14 11:17:41 -0700 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public String toString() { |
| 76 | final StringBuilder sb = new StringBuilder("NetworkScorerAppData{"); |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 77 | sb.append("mPackageName='").append(packageName).append('\''); |
| 78 | sb.append(", packageUid=").append(packageUid); |
| 79 | sb.append(", recommendationServiceClassName='") |
| 80 | .append(recommendationServiceClassName).append('\''); |
Jeremy Joslin | dd251ef | 2016-03-14 11:17:41 -0700 | [diff] [blame] | 81 | sb.append('}'); |
| 82 | return sb.toString(); |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 86 | /** |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 87 | * @return A {@link NetworkScorerAppData} instance containing information about the |
| 88 | * best configured network recommendation provider installed or {@code null} |
| 89 | * if none of the configured packages can recommend networks. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 90 | * |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 91 | * <p>A network recommendation provider is any application which: |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 92 | * <ul> |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 93 | * <li>Is listed in the <code>config_networkRecommendationPackageNames</code> config. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 94 | * <li>Declares the {@link android.Manifest.permission#SCORE_NETWORKS} permission. |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 95 | * <li>Includes a Service for {@link NetworkScoreManager#ACTION_RECOMMEND_NETWORKS}. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 96 | * </ul> |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 97 | */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 98 | public NetworkScorerAppData getNetworkRecommendationProviderData() { |
| 99 | // Network recommendation apps can only run as the primary user right now. |
| 100 | // http://b/23422763 |
Jeremy Joslin | 2ceac5a | 2016-01-08 09:30:44 -0800 | [diff] [blame] | 101 | if (UserHandle.getCallingUserId() != UserHandle.USER_SYSTEM) { |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 102 | return null; |
| 103 | } |
| 104 | |
| 105 | final List<String> potentialPkgs = getPotentialRecommendationProviderPackages(); |
| 106 | if (potentialPkgs.isEmpty()) { |
| 107 | if (DEBUG) { |
| 108 | Log.d(TAG, "No Network Recommendation Providers specified."); |
| 109 | } |
| 110 | return null; |
| 111 | } |
| 112 | |
| 113 | final PackageManager pm = mContext.getPackageManager(); |
| 114 | for (int i = 0; i < potentialPkgs.size(); i++) { |
| 115 | final String potentialPkg = potentialPkgs.get(i); |
| 116 | |
| 117 | // Look for the recommendation service class and required receiver. |
| 118 | final ResolveInfo resolveServiceInfo = findRecommendationService(potentialPkg); |
| 119 | if (resolveServiceInfo != null) { |
| 120 | return new NetworkScorerAppData(potentialPkg, |
| 121 | resolveServiceInfo.serviceInfo.applicationInfo.uid, |
| 122 | resolveServiceInfo.serviceInfo.name); |
| 123 | } else { |
| 124 | if (DEBUG) { |
| 125 | Log.d(TAG, potentialPkg + " does not have the required components, skipping."); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | // None of the configured packages are valid. |
| 131 | return null; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * @return A priority order list of package names that have been granted the |
| 136 | * permission needed for them to act as a network recommendation provider. |
| 137 | * The packages in the returned list may not contain the other required |
| 138 | * network recommendation provider components so additional checks are required |
| 139 | * before making a package the network recommendation provider. |
| 140 | */ |
| 141 | public List<String> getPotentialRecommendationProviderPackages() { |
| 142 | final String[] packageArray = mContext.getResources().getStringArray( |
| 143 | R.array.config_networkRecommendationPackageNames); |
| 144 | if (packageArray == null || packageArray.length == 0) { |
| 145 | if (DEBUG) { |
| 146 | Log.d(TAG, "No Network Recommendation Providers specified."); |
| 147 | } |
Jeremy Joslin | 5b294b4 | 2015-12-17 17:38:04 -0800 | [diff] [blame] | 148 | return Collections.emptyList(); |
| 149 | } |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 150 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 151 | if (VERBOSE) { |
| 152 | Log.d(TAG, "Configured packages: " + TextUtils.join(", ", packageArray)); |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 155 | List<String> packages = new ArrayList<>(); |
| 156 | final PackageManager pm = mContext.getPackageManager(); |
| 157 | for (String potentialPkg : packageArray) { |
| 158 | if (pm.checkPermission(permission.SCORE_NETWORKS, potentialPkg) |
| 159 | == PackageManager.PERMISSION_GRANTED) { |
| 160 | packages.add(potentialPkg); |
| 161 | } else { |
| 162 | if (DEBUG) { |
| 163 | Log.d(TAG, potentialPkg + " has not been granted " + permission.SCORE_NETWORKS |
| 164 | + ", skipping."); |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return packages; |
| 170 | } |
| 171 | |
| 172 | private ResolveInfo findRecommendationService(String packageName) { |
| 173 | final PackageManager pm = mContext.getPackageManager(); |
| 174 | final int resolveFlags = 0; |
| 175 | |
| 176 | final Intent serviceIntent = new Intent(NetworkScoreManager.ACTION_RECOMMEND_NETWORKS); |
| 177 | serviceIntent.setPackage(packageName); |
| 178 | final ResolveInfo resolveServiceInfo = |
| 179 | pm.resolveService(serviceIntent, resolveFlags); |
| 180 | |
| 181 | if (VERBOSE) { |
| 182 | Log.d(TAG, "Resolved " + serviceIntent + " to " + resolveServiceInfo); |
| 183 | } |
| 184 | |
| 185 | if (resolveServiceInfo != null && resolveServiceInfo.serviceInfo != null) { |
| 186 | return resolveServiceInfo; |
| 187 | } |
| 188 | |
| 189 | if (VERBOSE) { |
| 190 | Log.v(TAG, packageName + " does not have a service for " + serviceIntent); |
| 191 | } |
| 192 | return null; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | /** |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 196 | * Get the application to use for scoring networks. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 197 | * |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 198 | * @return the scorer app info or null if scoring is disabled (including if no scorer was ever |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 199 | * selected) or if the previously-set scorer is no longer a valid scorer app (e.g. because |
| 200 | * it was disabled or uninstalled). |
| 201 | */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 202 | @Nullable |
Amin Shaikh | aa09aa0 | 2016-11-21 17:27:53 -0800 | [diff] [blame] | 203 | public NetworkScorerAppData getActiveScorer() { |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 204 | if (isNetworkRecommendationsDisabled()) { |
| 205 | // If recommendations are disabled then there can't be an active scorer. |
| 206 | return null; |
| 207 | } |
| 208 | |
| 209 | // Otherwise return the recommendation provider (which may be null). |
| 210 | return getNetworkRecommendationProviderData(); |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Set the specified package as the default scorer application. |
| 215 | * |
Jeff Davidson | c741553 | 2014-06-23 18:15:34 -0700 | [diff] [blame] | 216 | * <p>The caller must have permission to write to {@link android.provider.Settings.Global}. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 217 | * |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 218 | * @param packageName the packageName of the new scorer to use. If null, scoring will be |
| 219 | * disabled. Otherwise, the scorer will only be set if it is a valid scorer application. |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 220 | * @return true if the scorer was changed, or false if the package is not a valid scorer or |
| 221 | * a valid network recommendation provider exists. |
| 222 | * @deprecated Scorers are now selected from a configured list. |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 223 | */ |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 224 | @Deprecated |
Amin Shaikh | aa09aa0 | 2016-11-21 17:27:53 -0800 | [diff] [blame] | 225 | public boolean setActiveScorer(String packageName) { |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 226 | return false; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /** Determine whether the application with the given UID is the enabled scorer. */ |
Jeremy Joslin | 9b442fa | 2017-01-09 16:22:20 -0800 | [diff] [blame] | 230 | @Deprecated // Use NetworkScoreManager.isCallerActiveScorer() |
Amin Shaikh | aa09aa0 | 2016-11-21 17:27:53 -0800 | [diff] [blame] | 231 | public boolean isCallerActiveScorer(int callingUid) { |
| 232 | NetworkScorerAppData defaultApp = getActiveScorer(); |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 233 | if (defaultApp == null) { |
| 234 | return false; |
| 235 | } |
Amin Shaikh | 2cd918a | 2017-01-05 14:28:47 -0800 | [diff] [blame] | 236 | return callingUid == defaultApp.packageUid; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 237 | } |
| 238 | |
Jeremy Joslin | b8418ac8 | 2016-12-06 07:42:38 -0800 | [diff] [blame] | 239 | private boolean isNetworkRecommendationsDisabled() { |
| 240 | final ContentResolver cr = mContext.getContentResolver(); |
| 241 | // A value of 1 indicates enabled. |
| 242 | return Settings.Global.getInt(cr, Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED, 0) != 1; |
Jeff Davidson | dd6fd1e | 2014-04-14 15:14:30 -0700 | [diff] [blame] | 243 | } |
| 244 | } |