Felipe Leme | a5d5e2d | 2019-03-19 16:54:55 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2019 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.service.contentcapture; |
| 18 | |
| 19 | import android.Manifest; |
| 20 | import android.annotation.NonNull; |
| 21 | import android.annotation.Nullable; |
| 22 | import android.annotation.UserIdInt; |
| 23 | import android.app.AppGlobals; |
| 24 | import android.content.ComponentName; |
| 25 | import android.content.Context; |
| 26 | import android.content.pm.PackageManager; |
| 27 | import android.content.pm.PackageManager.NameNotFoundException; |
| 28 | import android.content.pm.ServiceInfo; |
| 29 | import android.content.res.Resources; |
| 30 | import android.content.res.TypedArray; |
| 31 | import android.content.res.XmlResourceParser; |
| 32 | import android.os.RemoteException; |
| 33 | import android.util.AttributeSet; |
| 34 | import android.util.Log; |
| 35 | import android.util.Slog; |
| 36 | import android.util.Xml; |
| 37 | |
| 38 | import com.android.internal.R; |
| 39 | |
| 40 | import org.xmlpull.v1.XmlPullParser; |
| 41 | import org.xmlpull.v1.XmlPullParserException; |
| 42 | |
| 43 | import java.io.IOException; |
| 44 | import java.io.PrintWriter; |
| 45 | |
| 46 | /** |
| 47 | * {@link ServiceInfo} and meta-data about an {@link ContentCaptureService}. |
| 48 | * |
| 49 | * @hide |
| 50 | */ |
| 51 | public final class ContentCaptureServiceInfo { |
| 52 | |
| 53 | private static final String TAG = ContentCaptureServiceInfo.class.getSimpleName(); |
| 54 | private static final String XML_TAG_SERVICE = "content-capture-service"; |
| 55 | |
| 56 | private static ServiceInfo getServiceInfoOrThrow(ComponentName comp, boolean isTemp, |
| 57 | @UserIdInt int userId) throws PackageManager.NameNotFoundException { |
| 58 | int flags = PackageManager.GET_META_DATA; |
| 59 | if (!isTemp) { |
| 60 | flags |= PackageManager.MATCH_SYSTEM_ONLY; |
| 61 | } |
| 62 | |
| 63 | ServiceInfo si = null; |
| 64 | try { |
| 65 | si = AppGlobals.getPackageManager().getServiceInfo(comp, flags, userId); |
| 66 | } catch (RemoteException e) { |
| 67 | } |
| 68 | if (si == null) { |
| 69 | throw new NameNotFoundException("Could not get serviceInfo for " |
| 70 | + (isTemp ? " (temp)" : "(default system)") |
| 71 | + " " + comp.flattenToShortString()); |
| 72 | } |
| 73 | return si; |
| 74 | } |
| 75 | |
| 76 | @NonNull |
| 77 | private final ServiceInfo mServiceInfo; |
| 78 | |
| 79 | @Nullable |
| 80 | private final String mSettingsActivity; |
| 81 | |
| 82 | public ContentCaptureServiceInfo(@NonNull Context context, @NonNull ComponentName comp, |
| 83 | boolean isTemporaryService, @UserIdInt int userId) |
| 84 | throws PackageManager.NameNotFoundException { |
| 85 | this(context, getServiceInfoOrThrow(comp, isTemporaryService, userId)); |
| 86 | } |
| 87 | |
| 88 | private ContentCaptureServiceInfo(@NonNull Context context, @NonNull ServiceInfo si) { |
| 89 | // Check for permissions. |
| 90 | if (!Manifest.permission.BIND_CONTENT_CAPTURE_SERVICE.equals(si.permission)) { |
| 91 | Slog.w(TAG, "ContentCaptureService from '" + si.packageName |
| 92 | + "' does not require permission " |
| 93 | + Manifest.permission.BIND_CONTENT_CAPTURE_SERVICE); |
| 94 | throw new SecurityException("Service does not require permission " |
| 95 | + Manifest.permission.BIND_CONTENT_CAPTURE_SERVICE); |
| 96 | } |
| 97 | |
| 98 | mServiceInfo = si; |
| 99 | |
| 100 | // Get the metadata, if declared. |
| 101 | final XmlResourceParser parser = si.loadXmlMetaData(context.getPackageManager(), |
| 102 | ContentCaptureService.SERVICE_META_DATA); |
| 103 | if (parser == null) { |
| 104 | mSettingsActivity = null; |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | String settingsActivity = null; |
| 109 | |
| 110 | try { |
| 111 | final Resources resources = context.getPackageManager().getResourcesForApplication( |
| 112 | si.applicationInfo); |
| 113 | |
| 114 | int type = 0; |
| 115 | while (type != XmlPullParser.END_DOCUMENT && type != XmlPullParser.START_TAG) { |
| 116 | type = parser.next(); |
| 117 | } |
| 118 | |
| 119 | if (XML_TAG_SERVICE.equals(parser.getName())) { |
| 120 | final AttributeSet allAttributes = Xml.asAttributeSet(parser); |
| 121 | TypedArray afsAttributes = null; |
| 122 | try { |
| 123 | afsAttributes = resources.obtainAttributes(allAttributes, |
| 124 | com.android.internal.R.styleable.ContentCaptureService); |
| 125 | settingsActivity = afsAttributes.getString( |
| 126 | R.styleable.ContentCaptureService_settingsActivity); |
| 127 | } finally { |
| 128 | if (afsAttributes != null) { |
| 129 | afsAttributes.recycle(); |
| 130 | } |
| 131 | } |
| 132 | } else { |
| 133 | Log.e(TAG, "Meta-data does not start with content-capture-service tag"); |
| 134 | } |
| 135 | } catch (PackageManager.NameNotFoundException | IOException | XmlPullParserException e) { |
| 136 | Log.e(TAG, "Error parsing auto fill service meta-data", e); |
| 137 | } |
| 138 | |
| 139 | mSettingsActivity = settingsActivity; |
| 140 | } |
| 141 | |
| 142 | public ServiceInfo getServiceInfo() { |
| 143 | return mServiceInfo; |
| 144 | } |
| 145 | |
| 146 | @Nullable |
| 147 | public String getSettingsActivity() { |
| 148 | return mSettingsActivity; |
| 149 | } |
| 150 | |
| 151 | @Override |
| 152 | public String toString() { |
| 153 | final StringBuilder builder = new StringBuilder(); |
| 154 | builder.append(getClass().getSimpleName()); |
| 155 | builder.append("[").append(mServiceInfo); |
| 156 | builder.append(", settings:").append(mSettingsActivity); |
| 157 | return builder.toString(); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Dumps it! |
| 162 | */ |
| 163 | public void dump(@NonNull String prefix, @NonNull PrintWriter pw) { |
| 164 | pw.print(prefix); |
| 165 | pw.print("Component: "); |
| 166 | pw.println(getServiceInfo().getComponentName()); |
| 167 | pw.print(prefix); |
| 168 | pw.print("Settings: "); |
| 169 | pw.println(mSettingsActivity); |
| 170 | } |
| 171 | } |