Move //webapk to //chrome/android/webapk

webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.webapk.lib.client;
-
-import static org.chromium.webapk.lib.common.WebApkConstants.WEB_APK_PACKAGE_PREFIX;
-
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.PackageManager.NameNotFoundException;
-import android.content.pm.ResolveInfo;
-import android.content.pm.Signature;
-import android.util.Log;
-
-import java.util.Arrays;
-import java.util.List;
-
-/**
- * Checks whether a URL belongs to a WebAPK.
- */
-public class WebApkValidator {
-
-    private static final String TAG = "WebApkValidator";
-    private static byte[] sExpectedSignature;
-
-    /**
-     * Queries the PackageManager to determine whether a WebAPK can handle the URL. Ignores
-     * whether the user has selected a default handler for the URL and whether the default
-     * handler is the WebAPK.
-     *
-     * NOTE(yfriedman): This can fail if multiple WebAPKs can match the supplied url.
-     *
-     * @param context The application context.
-     * @param url The url to check.
-     * @return Package name of WebAPK which can handle the URL. Null if the url should not be
-     * handled by a WebAPK.
-     */
-    public static String queryWebAPKPackage(Context context, String url) {
-        Intent intent;
-        try {
-            intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME);
-        } catch (Exception e) {
-            return null;
-        }
-
-        intent.addCategory(Intent.CATEGORY_BROWSABLE);
-        intent.setComponent(null);
-        Intent selector = intent.getSelector();
-        if (selector != null) {
-            selector.addCategory(Intent.CATEGORY_BROWSABLE);
-            selector.setComponent(null);
-        }
-
-        List<ResolveInfo> resolveInfos = context.getPackageManager().queryIntentActivities(
-                intent, PackageManager.GET_RESOLVED_FILTER);
-        return findWebAPKPackage(resolveInfos);
-    }
-
-    /**
-     * @param The ResolveInfos to search.
-     * @return Package name of the ResolveInfo which corresponds to a WebAPK. Null if none of the
-     * ResolveInfos corresponds to a WebAPK.
-     */
-    public static String findWebAPKPackage(List<ResolveInfo> infos) {
-        for (ResolveInfo info : infos) {
-            if (info.activityInfo != null
-                    && info.activityInfo.packageName.startsWith(WEB_APK_PACKAGE_PREFIX)) {
-                return info.activityInfo.packageName;
-            }
-        }
-        return null;
-    }
-
-    /**
-     * Returns whether the provided WebAPK is installed and passes signature checks.
-     * @param context A context
-     * @param webappPackageName The package name to check
-     * @return true iff the WebAPK is installed and passes security checks
-     */
-    public static boolean isValidWebApk(Context context, String webappPackageName) {
-        if (sExpectedSignature == null) {
-            Log.wtf(TAG, "WebApk validation failure - expected signature not set."
-                    + "missing call to WebApkValidator.initWithBrowserHostSignature");
-        }
-        if (webappPackageName != null && webappPackageName.startsWith(WEB_APK_PACKAGE_PREFIX)) {
-            // check signature
-            PackageInfo packageInfo  = null;
-            try {
-                packageInfo = context.getPackageManager().getPackageInfo(webappPackageName,
-                        PackageManager.GET_SIGNATURES);
-            } catch (NameNotFoundException e) {
-                e.printStackTrace();
-                Log.d(TAG, "WebApk not found");
-                return false;
-            }
-
-            final Signature[] arrSignatures = packageInfo.signatures;
-            if (arrSignatures != null) {
-                for (Signature signature : arrSignatures) {
-                    if (Arrays.equals(sExpectedSignature, signature.toByteArray())) {
-                        Log.d(TAG, "WebApk valid - signature match!");
-                        return true;
-                    }
-                }
-            }
-        }
-        Log.d(TAG, "WebApk invalid");
-        return false;
-    }
-
-    /**
-     * Initializes the WebApkValidator with the expected signature that WebAPKs must be signed
-     * with for the current host.
-     * @param expectedSignature
-     */
-    public static void initWithBrowserHostSignature(byte[] expectedSignature) {
-        sExpectedSignature = expectedSignature;
-    }
-}