InstantAppResolver.java revision 46b4f2b7956e61cc2d4bc2f086c20ac859d44ba4 
1/*
2 * Copyright (C) 2016 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
17package com.android.server.pm;
18
19import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.ACTION_INSTANT_APP_RESOLUTION_PHASE_ONE;
20import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.ACTION_INSTANT_APP_RESOLUTION_PHASE_TWO;
21import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.FIELD_INSTANT_APP_LAUNCH_TOKEN;
22import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.FIELD_INSTANT_APP_RESOLUTION_DELAY_MS;
23import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.FIELD_INSTANT_APP_RESOLUTION_STATUS;
24
25import android.annotation.NonNull;
26import android.annotation.Nullable;
27import android.app.ActivityManager;
28import android.app.PendingIntent;
29import android.content.ComponentName;
30import android.content.Context;
31import android.content.IIntentSender;
32import android.content.Intent;
33import android.content.IntentFilter;
34import android.content.IntentSender;
35import android.content.pm.ActivityInfo;
36import android.content.pm.InstantAppRequest;
37import android.content.pm.AuxiliaryResolveInfo;
38import android.content.pm.InstantAppIntentFilter;
39import android.content.pm.InstantAppResolveInfo;
40import android.content.pm.InstantAppResolveInfo.InstantAppDigest;
41import android.metrics.LogMaker;
42import android.os.Binder;
43import android.os.Build;
44import android.os.Handler;
45import android.os.RemoteException;
46import android.util.Log;
47import android.util.Pair;
48import android.util.Slog;
49
50import com.android.internal.logging.MetricsLogger;
51import com.android.internal.logging.nano.MetricsProto;
52import com.android.server.pm.EphemeralResolverConnection.PhaseTwoCallback;
53
54import java.util.ArrayList;
55import java.util.Arrays;
56import java.util.List;
57import java.util.UUID;
58
59/** @hide */
60public abstract class InstantAppResolver {
61    private static final boolean DEBUG_EPHEMERAL = Build.IS_DEBUGGABLE;
62    private static final String TAG = "PackageManager";
63
64    private static int RESOLUTION_SUCCESS = 0;
65    private static int RESOLUTION_FAILURE = 1;
66
67    private static MetricsLogger sMetricsLogger;
68    private static MetricsLogger getLogger() {
69        if (sMetricsLogger == null) {
70            sMetricsLogger = new MetricsLogger();
71        }
72        return sMetricsLogger;
73    }
74
75    public static AuxiliaryResolveInfo doInstantAppResolutionPhaseOne(Context context,
76            EphemeralResolverConnection connection, InstantAppRequest requestObj) {
77        final long startTime = System.currentTimeMillis();
78        final String token = UUID.randomUUID().toString();
79        if (DEBUG_EPHEMERAL) {
80            Log.d(TAG, "[" + token + "] Resolving phase 1");
81        }
82        final Intent intent = requestObj.origIntent;
83        final InstantAppDigest digest =
84                new InstantAppDigest(intent.getData().getHost(), 5 /*maxDigests*/);
85        final int[] shaPrefix = digest.getDigestPrefix();
86        final List<InstantAppResolveInfo> instantAppResolveInfoList =
87                connection.getInstantAppResolveInfoList(shaPrefix, token);
88
89        if (instantAppResolveInfoList == null || instantAppResolveInfoList.size() == 0) {
90            // No hash prefix match; there are no instant apps for this domain.
91            if (DEBUG_EPHEMERAL) {
92                Log.d(TAG, "[" + token + "] No results returned");
93            }
94            return null;
95        }
96        final AuxiliaryResolveInfo resolveInfo = InstantAppResolver.filterInstantAppIntent(
97                instantAppResolveInfoList, intent, requestObj.resolvedType, requestObj.userId,
98                intent.getPackage(), digest, token);
99        logMetrics(ACTION_INSTANT_APP_RESOLUTION_PHASE_ONE, startTime, token,
100                RESOLUTION_SUCCESS);
101        if (DEBUG_EPHEMERAL && resolveInfo == null) {
102            Log.d(TAG, "[" + token + "] No results matched");
103        }
104        return resolveInfo;
105    }
106
107    public static void doInstantAppResolutionPhaseTwo(Context context,
108            EphemeralResolverConnection connection, InstantAppRequest requestObj,
109            ActivityInfo instantAppInstaller, Handler callbackHandler) {
110        final long startTime = System.currentTimeMillis();
111        final String token = requestObj.responseObj.token;
112        if (DEBUG_EPHEMERAL) {
113            Log.d(TAG, "[" + token + "] Resolving phase 2");
114        }
115        final Intent intent = requestObj.origIntent;
116        final String hostName = intent.getData().getHost();
117        final InstantAppDigest digest = new InstantAppDigest(hostName, 5 /*maxDigests*/);
118        final int[] shaPrefix = digest.getDigestPrefix();
119
120        final PhaseTwoCallback callback = new PhaseTwoCallback() {
121            @Override
122            void onPhaseTwoResolved(List<InstantAppResolveInfo> instantAppResolveInfoList,
123                    long startTime) {
124                final String packageName;
125                final String splitName;
126                final int versionCode;
127                if (instantAppResolveInfoList != null && instantAppResolveInfoList.size() > 0) {
128                    final AuxiliaryResolveInfo instantAppIntentInfo =
129                            InstantAppResolver.filterInstantAppIntent(
130                                    instantAppResolveInfoList, intent, null /*resolvedType*/,
131                                    0 /*userId*/, intent.getPackage(), digest, token);
132                    if (instantAppIntentInfo != null
133                            && instantAppIntentInfo.resolveInfo != null) {
134                        packageName = instantAppIntentInfo.resolveInfo.getPackageName();
135                        splitName = instantAppIntentInfo.splitName;
136                        versionCode = instantAppIntentInfo.resolveInfo.getVersionCode();
137                    } else {
138                        packageName = null;
139                        splitName = null;
140                        versionCode = -1;
141                    }
142                } else {
143                    packageName = null;
144                    splitName = null;
145                    versionCode = -1;
146                }
147                final Intent installerIntent = buildEphemeralInstallerIntent(
148                        requestObj.origIntent,
149                        requestObj.callingPackage,
150                        requestObj.resolvedType,
151                        requestObj.userId,
152                        packageName,
153                        splitName,
154                        versionCode,
155                        token,
156                        false /*needsPhaseTwo*/);
157                installerIntent.setComponent(new ComponentName(
158                        instantAppInstaller.packageName, instantAppInstaller.name));
159
160                logMetrics(ACTION_INSTANT_APP_RESOLUTION_PHASE_TWO, startTime, token,
161                        packageName != null ? RESOLUTION_SUCCESS : RESOLUTION_FAILURE);
162
163                context.startActivity(installerIntent);
164            }
165        };
166        connection.getInstantAppIntentFilterList(
167                shaPrefix, token, hostName, callback, callbackHandler, startTime);
168    }
169
170    /**
171     * Builds and returns an intent to launch the instant installer.
172     */
173    public static Intent buildEphemeralInstallerIntent(@NonNull Intent origIntent,
174            @NonNull String callingPackage,
175            @NonNull String resolvedType,
176            int userId,
177            @NonNull String instantAppPackageName,
178            @Nullable String instantAppSplitName,
179            int versionCode,
180            @Nullable String token,
181            boolean needsPhaseTwo) {
182        // Construct the intent that launches the instant installer
183        int flags = origIntent.getFlags();
184        final Intent intent = new Intent();
185        intent.setFlags(flags
186                | Intent.FLAG_ACTIVITY_NEW_TASK
187                | Intent.FLAG_ACTIVITY_CLEAR_TASK
188                | Intent.FLAG_ACTIVITY_NO_HISTORY
189                | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
190        if (token != null) {
191            intent.putExtra(Intent.EXTRA_EPHEMERAL_TOKEN, token);
192        }
193        if (origIntent.getData() != null) {
194            intent.putExtra(Intent.EXTRA_EPHEMERAL_HOSTNAME, origIntent.getData().getHost());
195        }
196
197        // We have all of the data we need; just start the installer without a second phase
198        if (!needsPhaseTwo) {
199            // Intent that is launched if the package couldn't be installed for any reason.
200            final Intent failureIntent = new Intent(origIntent);
201            failureIntent.setFlags(failureIntent.getFlags() | Intent.FLAG_IGNORE_EPHEMERAL);
202            failureIntent.setLaunchToken(token);
203            try {
204                final IIntentSender failureIntentTarget = ActivityManager.getService()
205                        .getIntentSender(
206                                ActivityManager.INTENT_SENDER_ACTIVITY, callingPackage,
207                                null /*token*/, null /*resultWho*/, 1 /*requestCode*/,
208                                new Intent[] { failureIntent },
209                                new String[] { resolvedType },
210                                PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT
211                                        | PendingIntent.FLAG_IMMUTABLE,
212                                null /*bOptions*/, userId);
213                intent.putExtra(Intent.EXTRA_EPHEMERAL_FAILURE,
214                        new IntentSender(failureIntentTarget));
215            } catch (RemoteException ignore) { /* ignore; same process */ }
216
217            // Intent that is launched if the package was installed successfully.
218            final Intent successIntent = new Intent(origIntent);
219            successIntent.setLaunchToken(token);
220            try {
221                final IIntentSender successIntentTarget = ActivityManager.getService()
222                        .getIntentSender(
223                                ActivityManager.INTENT_SENDER_ACTIVITY, callingPackage,
224                                null /*token*/, null /*resultWho*/, 0 /*requestCode*/,
225                                new Intent[] { successIntent },
226                                new String[] { resolvedType },
227                                PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT
228                                        | PendingIntent.FLAG_IMMUTABLE,
229                                null /*bOptions*/, userId);
230                intent.putExtra(Intent.EXTRA_EPHEMERAL_SUCCESS,
231                        new IntentSender(successIntentTarget));
232            } catch (RemoteException ignore) { /* ignore; same process */ }
233
234            intent.putExtra(Intent.EXTRA_PACKAGE_NAME, instantAppPackageName);
235            intent.putExtra(Intent.EXTRA_SPLIT_NAME, instantAppSplitName);
236            intent.putExtra(Intent.EXTRA_VERSION_CODE, versionCode);
237        }
238
239        return intent;
240    }
241
242    private static AuxiliaryResolveInfo filterInstantAppIntent(
243            List<InstantAppResolveInfo> instantAppResolveInfoList,
244            Intent intent, String resolvedType, int userId, String packageName,
245            InstantAppDigest digest, String token) {
246        final int[] shaPrefix = digest.getDigestPrefix();
247        final byte[][] digestBytes = digest.getDigestBytes();
248        // Go in reverse order so we match the narrowest scope first.
249        for (int i = shaPrefix.length - 1; i >= 0 ; --i) {
250            for (InstantAppResolveInfo instantAppInfo : instantAppResolveInfoList) {
251                if (!Arrays.equals(digestBytes[i], instantAppInfo.getDigestBytes())) {
252                    continue;
253                }
254                if (packageName != null
255                        && !packageName.equals(instantAppInfo.getPackageName())) {
256                    continue;
257                }
258                final List<InstantAppIntentFilter> instantAppFilters =
259                        instantAppInfo.getIntentFilters();
260                // No filters; we need to start phase two
261                if (instantAppFilters == null || instantAppFilters.isEmpty()) {
262                    if (DEBUG_EPHEMERAL) {
263                        Log.d(TAG, "No app filters; go to phase 2");
264                    }
265                    return new AuxiliaryResolveInfo(instantAppInfo,
266                            new IntentFilter(Intent.ACTION_VIEW) /*intentFilter*/,
267                            null /*splitName*/, token, true /*needsPhase2*/);
268                }
269                // We have a domain match; resolve the filters to see if anything matches.
270                final PackageManagerService.EphemeralIntentResolver instantAppResolver =
271                        new PackageManagerService.EphemeralIntentResolver();
272                for (int j = instantAppFilters.size() - 1; j >= 0; --j) {
273                    final InstantAppIntentFilter instantAppFilter = instantAppFilters.get(j);
274                    final List<IntentFilter> splitFilters = instantAppFilter.getFilters();
275                    if (splitFilters == null || splitFilters.isEmpty()) {
276                        continue;
277                    }
278                    for (int k = splitFilters.size() - 1; k >= 0; --k) {
279                        final AuxiliaryResolveInfo intentInfo =
280                                new AuxiliaryResolveInfo(instantAppInfo,
281                                        splitFilters.get(k), instantAppFilter.getSplitName(),
282                                        token, false /*needsPhase2*/);
283                        instantAppResolver.addFilter(intentInfo);
284                    }
285                }
286                List<AuxiliaryResolveInfo> matchedResolveInfoList = instantAppResolver.queryIntent(
287                        intent, resolvedType, false /*defaultOnly*/, userId);
288                if (!matchedResolveInfoList.isEmpty()) {
289                    if (DEBUG_EPHEMERAL) {
290                        final AuxiliaryResolveInfo info = matchedResolveInfoList.get(0);
291                        Log.d(TAG, "[" + token + "] Found match;"
292                                + " package: " + info.packageName
293                                + ", split: " + info.splitName
294                                + ", versionCode: " + info.versionCode);
295                    }
296                    return matchedResolveInfoList.get(0);
297                } else if (DEBUG_EPHEMERAL) {
298                    Log.d(TAG, "[" + token + "] No matches found"
299                            + " package: " + instantAppInfo.getPackageName()
300                            + ", versionCode: " + instantAppInfo.getVersionCode());
301                }
302            }
303        }
304        // Hash or filter mis-match; no instant apps for this domain.
305        return null;
306    }
307
308    private static void logMetrics(int action, long startTime, String token, int status) {
309        final LogMaker logMaker = new LogMaker(action)
310                .setType(MetricsProto.MetricsEvent.TYPE_ACTION)
311                .addTaggedData(FIELD_INSTANT_APP_RESOLUTION_DELAY_MS,
312                        new Long(System.currentTimeMillis() - startTime))
313                .addTaggedData(FIELD_INSTANT_APP_LAUNCH_TOKEN, token)
314                .addTaggedData(FIELD_INSTANT_APP_RESOLUTION_STATUS, new Integer(status));
315        getLogger().write(logMaker);
316    }
317}
318