8335267: [XWayland] move screencast tokens from .awt to .java folder

Reviewed-by: prr, avu

Author: Alexander Zvegintsev

src/java.desktop/unix/classes/sun/awt/screencast/TokenStorage.java

@@ -60,35 +60,33 @@
  * The restore token allows the ScreenCast session to be restored
  * with previously granted screen access permissions.
  */
-@SuppressWarnings("removal")
 final class TokenStorage {
 
     private TokenStorage() {}
 
     private static final String REL_NAME =
+            ".java/robot/screencast-tokens.properties";
+    private static final String REL_NAME_SECONDARY =
             ".awt/robot/screencast-tokens.properties";
 
     private static final Properties PROPS = new Properties();
     private static final Path PROPS_PATH;
     private static final Path PROP_FILENAME;
 
+    @SuppressWarnings("removal")
     private static void doPrivilegedRunnable(Runnable runnable) {
-        AccessController.doPrivileged(new PrivilegedAction<Void>() {
-            @Override
-            public Void run() {
-                runnable.run();
-                return null;
-            }
+        AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
+            runnable.run();
+            return null;
         });
     }
 
     static {
-        PROPS_PATH = AccessController.doPrivileged(new PrivilegedAction<Path>() {
-            @Override
-            public Path run() {
-                return setupPath();
-            }
-        });
+        @SuppressWarnings("removal")
+        Path propsPath = AccessController
+                .doPrivileged((PrivilegedAction<Path>) () -> setupPath());
+
+        PROPS_PATH = propsPath;
 
         if (PROPS_PATH != null) {
             PROP_FILENAME = PROPS_PATH.getFileName();
@@ -110,25 +108,32 @@ private static Path setupPath() {
         }
 
         Path path = Path.of(userHome, REL_NAME);
+        Path secondaryPath = Path.of(userHome, REL_NAME_SECONDARY);
+
+        boolean copyFromSecondary = !Files.isWritable(path)
+                && Files.isWritable(secondaryPath);
+
         Path workdir = path.getParent();
 
-        if (!Files.exists(workdir)) {
-            try {
-                Files.createDirectories(workdir);
-            } catch (Exception e) {
-                if (SCREENCAST_DEBUG) {
-                    System.err.printf("Token storage: cannot create" +
-                                    " directory %s %s\n", workdir, e);
+        if (!Files.isWritable(path)) {
+            if (!Files.exists(workdir)) {
+                try {
+                    Files.createDirectories(workdir);
+                } catch (Exception e) {
+                    if (SCREENCAST_DEBUG) {
+                        System.err.printf("Token storage: cannot create" +
+                                " directory %s %s\n", workdir, e);
+                    }
+                    return null;
                 }
-                return null;
             }
-        }
 
-        if (!Files.isWritable(workdir)) {
-            if (SCREENCAST_DEBUG) {
-                System.err.printf("Token storage: %s is not writable\n", workdir);
+            if (!Files.isWritable(workdir)) {
+                if (SCREENCAST_DEBUG) {
+                    System.err.printf("Token storage: %s is not writable\n", workdir);
+                }
+                return null;
             }
-            return null;
         }
 
         try {
@@ -145,7 +150,17 @@ private static Path setupPath() {
             }
         }
 
-        if (Files.exists(path)) {
+        if (copyFromSecondary) {
+            if (SCREENCAST_DEBUG) {
+                System.out.println("Token storage: copying from the secondary location "
+                                        + secondaryPath);
+            }
+            synchronized (PROPS) {
+                if (readTokens(secondaryPath)) {
+                    store(path, "copy from the secondary location");
+                }
+            }
+        } else if (Files.exists(path)) {
             if (!setFilePermission(path)) {
                 return null;
             }
@@ -302,7 +317,7 @@ private static void storeTokenFromNative(String oldToken,
             }
 
             if (changed) {
-                doPrivilegedRunnable(() -> store("save tokens"));
+                doPrivilegedRunnable(() -> store(PROPS_PATH, "save tokens"));
             }
         }
     }
@@ -315,7 +330,7 @@ private static boolean readTokens(Path path) {
                 PROPS.clear();
                 PROPS.load(reader);
             }
-        } catch (IOException e) {
+        } catch (IOException | IllegalArgumentException e) {
             if (SCREENCAST_DEBUG) {
                 System.err.printf("""
                         Token storage: failed to load property file %s
@@ -410,7 +425,7 @@ static Set<TokenItem> getTokens(List<Rectangle> affectedScreenBounds) {
     }
 
     private static void removeMalformedRecords(Set<String> malformedRecords) {
-        if (!isWritable()
+        if (!isWritable(PROPS_PATH)
             || malformedRecords == null
             || malformedRecords.isEmpty()) {
             return;
@@ -424,17 +439,17 @@ private static void removeMalformedRecords(Set<String> malformedRecords) {
                 }
             }
 
-            store("remove malformed records");
+            store(PROPS_PATH, "remove malformed records");
         }
     }
 
-    private static void store(String failMsg) {
-        if (!isWritable()) {
+    private static void store(Path path, String failMsg) {
+        if (!isWritable(path)) {
             return;
         }
 
         synchronized (PROPS) {
-            try (BufferedWriter writer = Files.newBufferedWriter(PROPS_PATH)) {
+            try (BufferedWriter writer = Files.newBufferedWriter(path)) {
                 PROPS.store(writer, null);
             } catch (IOException e) {
                 if (SCREENCAST_DEBUG) {
@@ -445,13 +460,13 @@ private static void store(String failMsg) {
         }
     }
 
-    private static boolean isWritable() {
-        if (PROPS_PATH == null
-            || (Files.exists(PROPS_PATH) && !Files.isWritable(PROPS_PATH))) {
+    private static boolean isWritable(Path path) {
+        if (path == null
+            || (Files.exists(path) && !Files.isWritable(path))) {
 
             if (SCREENCAST_DEBUG) {
                 System.err.printf(
-                        "Token storage: %s is not writable\n", PROPS_PATH);
+                        "Token storage: %s is not writable\n", path);
             }
             return false;
         } else {