{"id":1827,"date":"2023-03-28T22:50:41","date_gmt":"2023-03-28T14:50:41","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1827"},"modified":"2023-04-22T09:19:42","modified_gmt":"2023-04-22T01:19:42","slug":"activity-hijacking-protection-for-android-security","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/28\/activity-hijacking-protection-for-android-security\/","title":{"rendered":"Android \u5b89\u5168\u4e4b Activity \u52ab\u6301\u9632\u62a4"},"content":{"rendered":"<h2>\u4ec0\u4e48\u662f Activity \u52ab\u6301<\/h2>\n<p>Android \u4e3a\u4e86\u63d0\u9ad8\u7528\u6237\u7684\u7528\u6237\u4f53\u9a8c\uff0c\u5bf9\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\u5207\u6362\uff0c\u57fa\u672c\u4e0a\u662f\u65e0\u7f1d\u3002\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0c\u7528\u6237\u6253\u5f00\u5b89\u5353\u624b\u673a\u4e0a\u7684\u67d0\u4e00\u5e94\u7528\u4f8b\u5982\u652f\u4ed8\u5b9d\uff0c\u8fdb\u5165\u5230\u767b\u9646\u9875\u9762\uff0c\u8fd9\u65f6\u6076\u610f\u8f6f\u4ef6\u68c0\u6d4b\u5230\u7528\u6237\u7684\u8fd9\u4e00\u52a8\u4f5c\uff0c\u7acb\u5373\u5f39\u51fa\u4e00\u4e2a\u4e0e\u652f\u4ed8\u5b9d\u754c\u9762\u76f8\u540c\u7684 Activity\uff0c\u8986\u76d6\u6389\u4e86\u5408\u6cd5\u7684 Activity\uff0c\u7528\u6237\u51e0\u4e4e\u65e0\u6cd5\u5bdf\u89c9\uff0c\u8be5\u7528\u6237\u63a5\u4e0b\u6765\u8f93\u5165\u7528\u6237\u540d\u548c\u5bc6\u7801\u7684\u64cd\u4f5c\u5176\u5b9e\u662f\u5728\u6076\u610f\u8f6f\u4ef6\u7684 Activity\u4e0a\u8fdb\u884c\u7684\uff0c\u63a5\u4e0b\u6765\u4f1a\u53d1\u751f\u4ec0\u4e48\u5c31\u53ef\u60f3\u800c\u77e5\u3002<\/p>\n<p><!-- more --><\/p>\n<p>\u963f\u91cc\u805a\u5b89\u5168\u65d7\u4e0b\u4ea7\u54c1\u5b89\u5168\u7ec4\u4ef6 SDK \u5177\u6709\u5b89\u5168\u7b7e\u540d\u3001\u5b89\u5168\u52a0\u5bc6\u3001\u5b89\u5168\u5b58\u50a8\u3001\u6a21\u62df\u5668\u68c0\u6d4b\u3001\u53cd\u8c03\u8bd5\u3001\u53cd\u6ce8\u5165\u3001\u53cd Activity \u52ab\u6301\u7b49\u529f\u80fd\u3002 \u5f00\u53d1\u8005\u53ea\u9700\u8981\u7b80\u5355\u96c6\u6210\u5b89\u5168\u7ec4\u4ef6 SDK \u5c31\u53ef\u4ee5\u6709\u6548\u89e3\u51b3\u4e0a\u8ff0\u767b\u5f55\u7a97\u53e3\u88ab\u6728\u9a6c\u75c5\u6bd2\u52ab\u6301\u7684\u95ee\u9898\uff0c\u4f46\u5df2\u4e0b\u7ebf\u3002<\/p>\n<h2>\u9632\u62a4\u624b\u6bb5<\/h2>\n<p>\u76ee\u524d\uff0c\u8fd8\u6ca1\u6709\u4ec0\u4e48\u4e13\u95e8\u9488\u5bf9 Activity \u52ab\u6301\u7684\u9632\u62a4\u65b9\u6cd5\uff0c\u56e0\u4e3a\uff0c\u8fd9\u79cd\u653b\u51fb\u662f\u7528\u6237\u5c42\u9762\u4e0a\u7684\uff0c\u76ee\u524d\u8fd8\u65e0\u6cd5\u4ece\u4ee3\u7801\u5c42\u9762\u4e0a\u6839\u9664\u3002\u4f46\u662f\uff0c\u6211\u4eec\u53ef\u4ee5\u9002\u5f53\u5730\u5728 APP \u4e2d\u7ed9\u7528\u6237\u4e00\u4e9b\u8b66\u793a\u4fe1\u606f\uff0c\u63d0\u793a\u7528\u6237\u5176\u767b\u9646\u754c\u9762\u5df2\u88ab\u8986\u76d6\u3002\u5728\u7f51\u4e0a\u67e5\u4e86\u5f88\u591a\u89e3\u51b3\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5728 Acitivity \u7684<code>onStop<\/code>\u65b9\u6cd5\u4e2d \u8c03\u7528\u5c01\u88c5\u7684<code>AntiHijackingUtil<\/code>\u7c7b\uff08\u68c0\u6d4b\u7cfb\u7edf\u7a0b\u5e8f\u767d\u540d\u5355\uff09\u68c0\u6d4b\u7a0b\u5e8f\u662f\u5426\u88ab\u7cfb\u7edf\u7a0b\u5e8f\u8986\u76d6\u3002<\/li>\n<li>\u5728\u524d\u9762\u5efa\u7acb\u7684\u6b63\u5e38Activity\u7684\u767b\u9646\u754c\u9762\uff08\u4e5f\u5c31\u662f MainActivity\uff09\u4e2d\u91cd\u5199<code>onKeyDown<\/code>\u65b9\u6cd5\u548c<code>onPause<\/code>\u65b9\u6cd5\uff0c\u5224\u65ad\u7a0b\u5e8f\u8fdb\u5165\u540e\u53f0\u662f\u5426\u662f\u7528\u6237\u81ea\u8eab\u9020\u6210\u7684\uff08\u89e6\u6478\u8fd4\u56de\u952e\u6216 HOME \u952e\uff09\uff0c\u8fd9\u6837\u4e00\u6765\uff0c\u5f53\u5176\u88ab\u8986\u76d6\u65f6\uff0c\u5c31\u80fd\u591f\u5f39\u51fa\u8b66\u793a\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p><code>AntiHijackingUtil<\/code>\u7c7b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">\/**\n * Description: Activity\u53cd\u52ab\u6301\u68c0\u6d4b\u5de5\u5177\n *\/\npublic class AntiHijackingUtil {\n    public static final String TAG = &quot;AntiHijackingUtil&quot;;\n\n    \/**\n     * \u68c0\u6d4b\u5f53\u524dActivity\u662f\u5426\u5b89\u5168\n     *\/\n    public static boolean checkActivity(Context context) {\n        PackageManager pm = context.getPackageManager();\n        \/\/ \u67e5\u8be2\u6240\u6709\u5df2\u7ecf\u5b89\u88c5\u7684\u5e94\u7528\u7a0b\u5e8f\n        List&lt;ApplicationInfo&gt; listAppcations =\n                pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);\n        Collections.sort(listAppcations, new ApplicationInfo.DisplayNameComparator(pm)); \/\/ \u6392\u5e8f\n\n        List&lt;String&gt; safePackages = new ArrayList&lt;&gt;();\n        for (ApplicationInfo app : listAppcations) { \/\/ \u8fd9\u4e2a\u6392\u5e8f\u5fc5\u987b\u6709\n            if ((app.flags &amp; ApplicationInfo.FLAG_SYSTEM) != 0) {\n                safePackages.add(app.packageName);\n            }\n        }\n        \/\/ \u5f97\u5230\u6240\u6709\u7684\u7cfb\u7edf\u7a0b\u5e8f\u5305\u540d\u653e\u8fdb\u767d\u540d\u5355\u91cc\u9762\n        ActivityManager activityManager =\n                (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);\n        String runningActivityPackageName;\n        int sdkVersion;\n        try {\n            sdkVersion = Integer.valueOf(android.os.Build.VERSION.SDK);\n        } catch (NumberFormatException e) {\n            sdkVersion = 0;\n        }\n        if (sdkVersion &gt;= 21) { \/\/ \u83b7\u53d6\u7cfb\u7edfapi\u7248\u672c\u53f7\uff0c\u5982\u679c\u662f5x\u7cfb\u7edf\u5c31\u7528\u8fd9\u4e2a\u65b9\u6cd5\u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u7684\u5305\u540d\n            runningActivityPackageName = getCurrentPkgName(context);\n        } else {\n            runningActivityPackageName =\n                    activityManager.getRunningTasks(1).get(0).topActivity.getPackageName();\n        }\n        \/\/ \u5982\u679c\u662f4x\u53ca\u4ee5\u4e0b\uff0c\u7528\u8fd9\u4e2a\u65b9\u6cd5\n        if (runningActivityPackageName != null) {\n            \/\/ \u6709\u4e9b\u60c5\u51b5\u4e0b\u57285x\u7684\u624b\u673a\u4e2d\u53ef\u80fd\u83b7\u53d6\u4e0d\u5230\u5f53\u524d\u8fd0\u884c\u7684\u5305\u540d\uff0c\u6240\u4ee5\u8981\u975e\u7a7a\u5224\u65ad\n            if (runningActivityPackageName.equals(context.getPackageName())) {\n                return true;\n            }\n            \/\/ \u767d\u540d\u5355\u6bd4\u5bf9\n            for (String safePack : safePackages) {\n                if (safePack.equals(runningActivityPackageName)) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    }\n\n    private static String getCurrentPkgName(Context context) {\n        \/\/ 5x\u7cfb\u7edf\u4ee5\u540e\u5229\u7528\u53cd\u5c04\u83b7\u53d6\u5f53\u524d\u6808\u9876activity\u7684\u5305\u540d\n        ActivityManager.RunningAppProcessInfo currentInfo = null;\n        Field field = null;\n        int START_TASK_TO_FRONT = 2;\n        String pkgName = null;\n        try {\n            \/\/ \u901a\u8fc7\u53cd\u5c04\u83b7\u53d6\u8fdb\u7a0b\u72b6\u6001\u5b57\u6bb5.\n            field = ActivityManager.RunningAppProcessInfo.class.getDeclaredField(&quot;processState&quot;);\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);\n        List appList = am.getRunningAppProcesses();\n        ActivityManager.RunningAppProcessInfo app;\n        for (int i = 0; i &lt; appList.size(); i++) {\n            \/\/ActivityManager.RunningAppProcessInfo app : appList\n            app = (ActivityManager.RunningAppProcessInfo) appList.get(i);\n            \/\/ \u8868\u793a\u524d\u53f0\u8fd0\u884c\u8fdb\u7a0b\n            if (app.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {\n                Integer state = null;\n                try {\n                    state = field.getInt(app); \/\/ \u53cd\u5c04\u8c03\u7528\u5b57\u6bb5\u503c\u7684\u65b9\u6cd5\uff0c\u83b7\u53d6\u8be5\u8fdb\u7a0b\u7684\u72b6\u6001\n                } catch (Exception e) {\n                    e.printStackTrace();\n                }\n                \/\/ \u6839\u636e\u8fd9\u4e2a\u5224\u65ad\u6761\u4ef6\u4ece\u524d\u53f0\u4e2d\u83b7\u53d6\u5f53\u524d\u5207\u6362\u7684\u8fdb\u7a0b\u5bf9\u8c61\n                if (state != null &amp;&amp; state == START_TASK_TO_FRONT) {\n                    currentInfo = app;\n                    break;\n                }\n            }\n        }\n        if (currentInfo != null) {\n            pkgName = currentInfo.processName;\n        }\n        return pkgName;\n    }\n\n    \/**\n     * \u5224\u65ad\u5f53\u524d\u662f\u5426\u5728\u684c\u9762\n     *\n     * @param context \u4e0a\u4e0b\u6587\n     *\/\n    public static boolean isHome(Context context) {\n        ActivityManager mActivityManager =\n                (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);\n        List&lt;ActivityManager.RunningTaskInfo&gt; rti = mActivityManager.getRunningTasks(1);\n        return getHomes(context).contains(rti.get(0).topActivity.getPackageName());\n    }\n\n    \/**\n     * \u83b7\u5f97\u5c5e\u4e8e\u684c\u9762\u7684\u5e94\u7528\u7684\u5e94\u7528\u5305\u540d\u79f0\n     *\n     * @return \u8fd4\u56de\u5305\u542b\u6240\u6709\u5305\u540d\u7684\u5b57\u7b26\u4e32\u5217\u8868\n     *\/\n    private static List&lt;String&gt; getHomes(Context context) {\n        List&lt;String&gt; names = new ArrayList&lt;String&gt;();\n        PackageManager packageManager = context.getPackageManager();\n        Intent intent = new Intent(Intent.ACTION_MAIN);\n        intent.addCategory(Intent.CATEGORY_HOME);\n        List&lt;ResolveInfo&gt; resolveInfo = packageManager.queryIntentActivities(intent,\n                PackageManager.MATCH_DEFAULT_ONLY);\n        for (ResolveInfo ri : resolveInfo) {\n            names.add(ri.activityInfo.packageName);\n        }\n        return names;\n    }\n\n    \/**\n     * \u5224\u65ad\u5f53\u524d\u662f\u5426\u5728\u9501\u5c4f\u518d\u89e3\u9501\u72b6\u6001\n     *\n     * @param context \u4e0a\u4e0b\u6587\n     *\/\n    public static boolean isReflectScreen(Context context) {\n        KeyguardManager mKeyguardManager =\n                (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);\n        return mKeyguardManager.inKeyguardRestrictedInputMode();\n    }\n}<\/code><\/pre>\n<p>\u4f46\u662f\u8fd9\u4e24\u79cd\u65b9\u6cd5\u90fd\u5b58\u5728\u95ee\u9898\uff0cAndroid <code>onKeyDown<\/code>\u65b9\u6cd5\u76ee\u524d\u6839\u672c\u65e0\u6cd5\u76d1\u542c\u5230 HOME \u952e\u3002<code>AntiHijackingUtil<\/code>\u7c7b\u53ea\u68c0\u6d4b\u4e86\u7cfb\u7edf\u7a0b\u5e8f\uff0c\u53d1\u73b0\u5728\u9501\u5c4f\u72b6\u6001\u4e0b\u4ee3\u7801\u65e0\u6cd5\u68c0\u67e5\u4e5f\u63d0\u793a\u8b66\u544a\u3002\u5373\u5728\u70b9\u51fb HOME \u952e\u548c\u9501\u5c4f\u5728\u89e3\u9501\u7684\u60c5\u51b5\u4e0b\u4f9d\u7136\u63d0\u793a\u5e94\u7528\u8b66\u544a\u3002<\/p>\n<h2>\u9632\u62a4\u65b9\u6cd5\u6539\u8fdb<\/h2>\n<p>Activity \u52ab\u6301\u9632\u62a4\u6211\u4eec\u60f3\u8fbe\u5230\u7684\u9884\u671f\u76ee\u6807\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u7528\u6237\u4e3b\u52a8\u9000\u51fa APP ( \u8fd4\u56de\u952e \u3001HOME \u952e)\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6211\u4eec\u4e0d\u9700\u8981\u7ed9\u7528\u6237\u5f39\u51fa\u8b66\u544a\u63d0\u793a<\/li>\n<li>APP \u5728\u9501\u5c4f\u518d\u89e3\u9501\u7684\u60c5\u51b5\u4e0b\u6211\u4eec\u4e0d\u9700\u8981\u7ed9\u7528\u6237\u5f39\u51fa\u8b66\u544a\u63d0\u793a<\/li>\n<li>\u5176\u4ed6\u5e94\u7528\u7a81\u7136\u8986\u76d6\u5728\u6211\u4eec APP \u4e0a\u65f6\u7ed9\u51fa\u5408\u7406\u7684\u8b66\u544a\u63d0\u793a<\/li>\n<\/ul>\n<p>APP \u8fd4\u56de\u684c\u9762\u3001\u9501\u5c4f\u518d\u89e3\u9501\u60c5\u51b5\u68c0\u6d4b\u4ee3\u7801<\/p>\n<pre><code class=\"language-java\"> \/**\n * \u5224\u65ad\u5f53\u524d\u662f\u5426\u5728\u684c\u9762\n *\n * @param context \u4e0a\u4e0b\u6587\n *\/\npublic static boolean isHome(Context context) {\n    ActivityManager mActivityManager =\n            (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);\n    List&lt;ActivityManager.RunningTaskInfo&gt; rti = mActivityManager.getRunningTasks(1);\n    return getHomes(context).contains(rti.get(0).topActivity.getPackageName());\n}\n\n\/**\n * \u83b7\u5f97\u5c5e\u4e8e\u684c\u9762\u7684\u5e94\u7528\u7684\u5e94\u7528\u5305\u540d\u79f0\n *\n * @return \u8fd4\u56de\u5305\u542b\u6240\u6709\u5305\u540d\u7684\u5b57\u7b26\u4e32\u5217\u8868\n *\/\nprivate static List&lt;String&gt; getHomes(Context context) {\n    List&lt;String&gt; names = new ArrayList&lt;String&gt;();\n    PackageManager packageManager = context.getPackageManager();\n    Intent intent = new Intent(Intent.ACTION_MAIN);\n    intent.addCategory(Intent.CATEGORY_HOME);\n    List&lt;ResolveInfo&gt; resolveInfo = packageManager.queryIntentActivities(intent,\n            PackageManager.MATCH_DEFAULT_ONLY);\n    for (ResolveInfo ri : resolveInfo) {\n        names.add(ri.activityInfo.packageName);\n    }\n    return names;\n}\n\n\/**\n * \u5224\u65ad\u5f53\u524d\u662f\u5426\u5728\u9501\u5c4f\u518d\u89e3\u9501\u72b6\u6001\n *\n * @param context \u4e0a\u4e0b\u6587\n *\/\npublic static boolean isReflectScreen(Context context) {\n    KeyguardManager mKeyguardManager =\n            (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);\n    return mKeyguardManager.inKeyguardRestrictedInputMode();\n}<\/code><\/pre>\n<p>\u5e76\u4e14\u5728<code>onStop<\/code>\u65b9\u6cd5\u4e2d\u68c0\u6d4b\u662f\u5426\u9700\u8981\u5f39\u51fa\u8b66\u544a\u63d0\u9192<\/p>\n<pre><code class=\"language-java\">@Override\nprotected void onStop() {\n    super.onStop();\n    new Thread(new Runnable() {\n        @Override\n        public void run() {\n            \/\/ \u767d\u540d\u5355\n            boolean safe = AntiHijackingUtil.checkActivity(getApplicationContext());\n            \/\/ \u7cfb\u7edf\u684c\u9762\n            boolean isHome = AntiHijackingUtil.isHome(getApplicationContext());\n            \/\/ \u9501\u5c4f\u64cd\u4f5c\n            boolean isReflectScreen = AntiHijackingUtil.isReflectScreen(getApplicationContext());\n            \/\/ \u5224\u65ad\u7a0b\u5e8f\u662f\u5426\u5f53\u524d\u663e\u793a\n            if (!safe &amp;&amp; !isHome &amp;&amp; !isReflectScreen) {\n                Looper.prepare();\n                Toast.makeText(getApplicationContext(), R.string.activity_safe_warning,\n                        Toast.LENGTH_LONG).show();\n                Looper.loop();\n            }\n        }\n    }).start();\n}<\/code><\/pre>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u70b9\u51fb\u901a\u77e5\u680f\u6253\u5f00\u5176\u4ed6\u5e94\u7528\u6765\u6a21\u62df\u6076\u610f\u8f6f\u4ef6\u8986\u76d6APP\u6765\u770b\u4e00\u4e0b\u5e94\u7528\u8fd0\u884c\u6548\u679c<\/p>\n<p>\u672c\u6587\u8f6c\u8f7d\u81f3\uff1a<a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jianshu.com\/p\/d4677e837648\">https:\/\/www.jianshu.com\/p\/d4677e837648<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f Activity \u52ab\u6301 Android \u4e3a\u4e86\u63d0\u9ad8\u7528\u6237\u7684\u7528\u6237\u4f53\u9a8c\uff0c\u5bf9\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\u5207\u6362\uff0c\u57fa\u672c\u4e0a\u662f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[311],"tags":[60],"class_list":["post-1827","post","type-post","status-publish","format-standard","hentry","category-android-advance","tag-activity"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1827"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1827\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}