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src/jdk.jpackage/windows/classes/jdk/jpackage/internal/WindowsRegistry.java

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  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jpackage.internal;
  27 
  28 import java.io.BufferedReader;
  29 import java.io.ByteArrayInputStream;
  30 import java.io.ByteArrayOutputStream;
  31 import java.io.IOException;
  32 import java.io.InputStreamReader;
  33 import java.io.PrintStream;
  34 import java.util.ArrayList;
  35 import java.util.List;
  36 
  37 import static jdk.jpackage.internal.IOUtils.exec;
  38 
  39 final class WindowsRegistry {
  40 








  41     private WindowsRegistry() {}
  42 
  43     /**
  44      * Reads the registry value for DisableRealtimeMonitoring.
  45      * @return true if DisableRealtimeMonitoring is set to 0x1,
  46      *         false otherwise.
  47      */
  48     static final boolean readDisableRealtimeMonitoring() {
  49         boolean result = false;
  50         final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
  51                   + "Windows Defender\\Real-Time Protection";
  52         final String subkey = "DisableRealtimeMonitoring";
  53         String value = readRegistry(key, subkey);
  54 
  55         if (!value.isEmpty()) {
  56             // This code could be written better but this works. It validates
  57             // that the result of readRegistry returned what we expect and then
  58             // checks for a 0x0 or 0x1. 0x0 means real time monitoring is
  59             // on, 0x1 means it is off. So this function returns true if
  60             // real-time-monitoring is disabled.
  61             int index = value.indexOf(subkey);
  62             value = value.substring(index + subkey.length());
  63             String reg = "REG_DWORD";
  64             index = value.indexOf(reg);
  65             value = value.substring(index + reg.length());
  66             String hex = "0x";
  67             index = value.indexOf(hex);
  68             value = value.substring(index + hex.length());
  69 
  70             if (value.equals("1")) {
  71                 result = true;
  72             }
  73         }
  74 
  75         return result;
  76     }
  77 
  78     static final List<String> readExclusionsPaths() {
  79         List<String> result = new ArrayList<String>();
  80         final String key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\"
  81                 + "Windows Defender\\Exclusions\\Paths";
  82         String value = readRegistry(key, "");
  83 
  84         if (!value.isEmpty()) {
  85             final String reg = "REG_DWORD";
  86             final String hex = "0x0";
  87 
  88             int index = value.indexOf(key);
  89             if (index == 0) {
  90                 value = value.substring(index + key.length());
  91 
  92                 while (value.length() > 0) {
  93                     index = value.indexOf(reg);
  94                     String name = value.substring(0, index);
  95                     value = value.substring(index + reg.length());
  96                     index = value.indexOf(hex);
  97                     value = value.substring(index + hex.length());
  98 
  99                     if (index > 0) {
 100                         name = name.trim();
 101                         result.add(name);
 102                     }
 103                 }
 104             }








 105         }



 106 
 107         return result;
 108     }
 109 
 110     /**
 111      * @param key in the registry
 112      * @param subkey in the registry key
 113      * @return registry value or null if not found
 114      */
 115     static final String readRegistry(String key, String subkey){
 116         String result = "";
 117 
 118         try {
 119             List<String> buildOptions = new ArrayList<>();
 120             buildOptions.add("reg");
 121             buildOptions.add("query");
 122             buildOptions.add("\"" + key + "\"");
 123 
 124             if (!subkey.isEmpty()) {
 125                 buildOptions.add("/v");
 126                 buildOptions.add(subkey);
 127             }
 128 
 129             try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
 130                     PrintStream ps = new PrintStream(baos)) {
 131                 ProcessBuilder security = new ProcessBuilder(buildOptions);
 132                 exec(security, false, false, ps);
 133                 BufferedReader bfReader = new BufferedReader(
 134                         new InputStreamReader(
 135                         new ByteArrayInputStream(baos.toByteArray())));
 136                 String line = null;
 137 
 138                 while((line = bfReader.readLine()) != null){
 139                     result += line;
 140                 }
 141             }
 142             catch (IOException e) {
 143             }
 144         }
 145         catch (Exception e) {
 146         }
 147 
 148         return result;
 149     }













 150 }


  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jpackage.internal;
  27 
  28 import java.io.BufferedReader;
  29 import java.io.ByteArrayInputStream;
  30 import java.io.ByteArrayOutputStream;
  31 import java.io.IOException;
  32 import java.io.InputStreamReader;
  33 import java.io.PrintStream;
  34 import java.util.ArrayList;
  35 import java.util.List;
  36 
  37 import static jdk.jpackage.internal.IOUtils.exec;
  38 
  39 final class WindowsRegistry {
  40 
  41     // Currently we only support HKEY_LOCAL_MACHINE. Native implementation will
  42     // require support for additinal HKEY if needed.
  43     private static final int HKEY_LOCAL_MACHINE = 1;
  44 
  45     static {
  46         System.loadLibrary("jpackage");
  47     }
  48 
  49     private WindowsRegistry() {}
  50 
  51     /**
  52      * Reads the registry value for DisableRealtimeMonitoring.
  53      * @return true if DisableRealtimeMonitoring is set to 0x1,
  54      *         false otherwise.
  55      */
  56     static final boolean readDisableRealtimeMonitoring() {
  57         final String subKey = "Software\\Microsoft\\"

  58                   + "Windows Defender\\Real-Time Protection";
  59         final String value = "DisableRealtimeMonitoring";
  60         int result = readDwordValue(HKEY_LOCAL_MACHINE, subKey, value, 0);
  61         return (result == 1);





















  62     }
  63 
  64     static final List<String> readExclusionsPaths() {
  65         List<String> result = new ArrayList<>();
  66         final String subKey = "Software\\Microsoft\\"
  67                 + "Windows Defender\\Exclusions\\Paths";
  68         long lKey = openRegistryKey(HKEY_LOCAL_MACHINE, subKey);
  69         if (lKey == 0) {
  70             return result;



















  71         }
  72 
  73         String valueName;
  74         int index = 0;
  75         do {
  76             valueName = enumRegistryValue(lKey, index);
  77             if (valueName != null) {
  78                 result.add(valueName);
  79                 index++;
  80             }
  81         } while (valueName != null);
  82 
  83         closeRegistryKey(lKey);
  84 
  85         return result;
  86     }
  87 
  88     /**
  89      * Reads DWORD registry value.
  90      *
  91      * @param key one of HKEY predefine value
  92      * @param subKey registry sub key
  93      * @param value value to read
  94      * @param defaultValue default value in case if subKey or value not found
  95      *                     or any other errors occurred
  96      * @return value's data only if it was read successfully, otherwise
  97      *         defaultValue
  98      */
  99     private static native int readDwordValue(int key, String subKey,
 100             String value, int defaultValue);





 101 
 102     /**
 103      * Open registry key.
 104      *
 105      * @param key one of HKEY predefine value
 106      * @param subKey registry sub key
 107      * @return native handle to open key
 108      */
 109     private static native long openRegistryKey(int key, String subKey);
 110 
 111     /**
 112      * Enumerates the values for registry key.
 113      *
 114      * @param lKey native handle to open key returned by openRegistryKey
 115      * @param index index of value starting from 0. Increment until this
 116      *              function returns NULL which means no more values.
 117      * @return returns value or NULL if error or no more data
 118      */
 119     private static native String enumRegistryValue(long lKey, int index);
 120 
 121     /**
 122      * Close registry key.
 123      *
 124      * @param lKey native handle to open key returned by openRegistryKey
 125      */
 126     private static native void closeRegistryKey(long lKey);
 127 
 128     /**
 129      * Compares two Windows paths regardless case and if paths are short or long.
 130      *
 131      * @param path1 path to compare
 132      * @param path2 path to compare
 133      * @return true if paths point to same location
 134      */
 135     public static native boolean comparePaths(String path1, String path2);
 136 }
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