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      1 /*
      2  * Copyright (C) 2016 Google Inc.
      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.os.cts;
     18 
     19 import com.android.compatibility.common.util.ApiLevelUtil;
     20 
     21 import android.os.Build;
     22 import android.os.SystemProperties;
     23 import android.test.InstrumentationTestCase;
     24 import android.util.Log;
     25 
     26 /**
     27  * Tests for Security Patch String settings
     28  */
     29 public class SecurityPatchTest extends InstrumentationTestCase {
     30 
     31     private static final String TAG = SecurityPatchTest.class.getSimpleName();
     32     private static final String SECURITY_PATCH_ERROR =
     33             "security_patch should be in the format \"YYYY-MM-DD\". Found \"%s\"";
     34     private static final String SECURITY_PATCH_DATE_ERROR =
     35             "security_patch should be \"%d-%02d\" or later. Found \"%s\"";
     36     private static final int SECURITY_PATCH_YEAR = 2016;
     37     private static final int SECURITY_PATCH_MONTH = 12;
     38 
     39     private boolean mSkipTests = false;
     40     private String mVendorSecurityPatch;
     41     private String mBuildSecurityPatch;
     42 
     43     @Override
     44     protected void setUp() {
     45         mSkipTests = (ApiLevelUtil.isBefore(Build.VERSION_CODES.M));
     46         mVendorSecurityPatch = SystemProperties.get("ro.vendor.build.security_patch", "");
     47         mBuildSecurityPatch = Build.VERSION.SECURITY_PATCH;
     48     }
     49 
     50     /** Security patch string must exist in M or higher **/
     51     public void testSecurityPatchFound() {
     52         if (mSkipTests) {
     53             Log.w(TAG, "Skipping M+ Test.");
     54             return;
     55         }
     56         String error = String.format(SECURITY_PATCH_ERROR, mBuildSecurityPatch);
     57         assertTrue(error, !mBuildSecurityPatch.isEmpty());
     58     }
     59 
     60     public void testVendorSecurityPatchFound() {
     61         if (Build.VERSION.FIRST_SDK_INT <= Build.VERSION_CODES.O) {
     62             Log.w(TAG, "Skipping P+ Test");
     63             return;
     64         }
     65         assertTrue(!mVendorSecurityPatch.isEmpty());
     66     }
     67 
     68     public void testSecurityPatchesFormat() {
     69         if (mSkipTests) {
     70             Log.w(TAG, "Skipping M+ Test.");
     71             return;
     72         }
     73         String error = String.format(SECURITY_PATCH_ERROR, mBuildSecurityPatch);
     74         testSecurityPatchFormat(mBuildSecurityPatch, error);
     75 
     76         if (Build.VERSION.FIRST_SDK_INT <= Build.VERSION_CODES.O) {
     77             Log.w(TAG, "Skipping P+ Test");
     78             return;
     79         }
     80         error = String.format(SECURITY_PATCH_ERROR, mVendorSecurityPatch);
     81         testSecurityPatchFormat(mVendorSecurityPatch, error);
     82     }
     83 
     84     /** Security patch should be of the form YYYY-MM-DD in M or higher */
     85     private void testSecurityPatchFormat(String patch, String error) {
     86         assertEquals(error, 10, patch.length());
     87         assertTrue(error, Character.isDigit(patch.charAt(0)));
     88         assertTrue(error, Character.isDigit(patch.charAt(1)));
     89         assertTrue(error, Character.isDigit(patch.charAt(2)));
     90         assertTrue(error, Character.isDigit(patch.charAt(3)));
     91         assertEquals(error, '-', patch.charAt(4));
     92         assertTrue(error, Character.isDigit(patch.charAt(5)));
     93         assertTrue(error, Character.isDigit(patch.charAt(6)));
     94         assertEquals(error, '-', patch.charAt(7));
     95         assertTrue(error, Character.isDigit(patch.charAt(8)));
     96         assertTrue(error, Character.isDigit(patch.charAt(9)));
     97     }
     98 
     99     public void testSecurityPatchDates() {
    100         if (mSkipTests) {
    101             Log.w(TAG, "Skipping M+ Test.");
    102             return;
    103         }
    104 
    105         String error = String.format(SECURITY_PATCH_DATE_ERROR,
    106                                      SECURITY_PATCH_YEAR,
    107                                      SECURITY_PATCH_MONTH,
    108                                      mBuildSecurityPatch);
    109         testSecurityPatchDate(mBuildSecurityPatch, error);
    110 
    111         if (Build.VERSION.FIRST_SDK_INT <= Build.VERSION_CODES.O) {
    112             Log.w(TAG, "Skipping P+ Test");
    113             return;
    114         }
    115         error = String.format(SECURITY_PATCH_DATE_ERROR,
    116                                      SECURITY_PATCH_YEAR,
    117                                      SECURITY_PATCH_MONTH,
    118                                      mVendorSecurityPatch);
    119         testSecurityPatchDate(mVendorSecurityPatch, error);
    120     }
    121     /** Security patch should no older than the month this test was updated in M or higher **/
    122     private void testSecurityPatchDate(String patch, String error) {
    123         int declaredYear = 0;
    124         int declaredMonth = 0;
    125 
    126         try {
    127             declaredYear = Integer.parseInt(patch.substring(0,4));
    128             declaredMonth = Integer.parseInt(patch.substring(5,7));
    129         } catch (Exception e) {
    130             assertTrue(error, false);
    131         }
    132 
    133         assertTrue(error, declaredYear >= SECURITY_PATCH_YEAR);
    134         assertTrue(error, (declaredYear > SECURITY_PATCH_YEAR) ||
    135                           (declaredMonth >= SECURITY_PATCH_MONTH));
    136     }
    137 }
    138