feat: password encrypt/decrypt

dependency-reduced-pom.xml

@@ -4,7 +4,7 @@
   <groupId>me.hatter</groupId>
   <artifactId>card-cryptomator</artifactId>
   <name>card-cryptomator</name>
-  <version>1.0.0</version>
+  <version>1.0.1</version>
   <description>Plug-in for Cryptomator to store vault passwords with card-cli encryption.</description>
   <url>https://git.hatter.ink/hatter/card-cryptomator</url>
   <developers>

justfile

@@ -0,0 +1,7 @@
+_:
+  @just --list
+
+# build pacakge
+build:
+  buildj package
+

pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>me.hatter</groupId>
     <artifactId>card-cryptomator</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.1</version>
 
     <name>card-cryptomator</name>
     <description>Plug-in for Cryptomator to store vault passwords with card-cli encryption.</description>

src/main/java/me/hatter/integrations/card/CardConfig.java

@@ -11,6 +11,8 @@ public class CardConfig {
      */
     private String encryptKeyBasePath;
 
+    private Long passwordCacheTimeMillis;
+
     public String getEncryptKeyBasePath() {
         return encryptKeyBasePath;
     }
@@ -18,4 +20,12 @@ public class CardConfig {
     public void setEncryptKeyBasePath(String encryptKeyBasePath) {
         this.encryptKeyBasePath = encryptKeyBasePath;
     }
+
+    public Long getPasswordCacheTimeMillis() {
+        return passwordCacheTimeMillis;
+    }
+
+    public void setPasswordCacheTimeMillis(Long passwordCacheTimeMillis) {
+        this.passwordCacheTimeMillis = passwordCacheTimeMillis;
+    }
 }

src/main/java/me/hatter/integrations/card/Utils.java

@@ -14,6 +14,7 @@ import java.util.Base64;
 import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
 
 /**
@@ -27,7 +28,36 @@ public class Utils {
     private static final File CARD_CONFIG_FILE2 = new File(USER_HOME, ".config/cryptomator/card_config.json");
     private static final File DEFAULT_ENCRYPTION_KEY_BASE_PATH = new File(USER_HOME, ".config/cryptomator/card_keys/");
 
-    private static final ConcurrentMap<String, String> PASSWORD_CACHE_MAP = new ConcurrentHashMap<>();
+    private static final ConcurrentMap<String, CachedPasswordWithTime> PASSWORD_CACHE_MAP = new ConcurrentHashMap<>();
+
+    private static class CachedPasswordWithTime {
+        private String password;
+        private long timestamp;
+    }
+
+    private static void putCachedPassword(CardConfig cardConfig, String key, String password) {
+        final CachedPasswordWithTime cachedPasswordWithTime = new CachedPasswordWithTime();
+        cachedPasswordWithTime.password = password;
+        cachedPasswordWithTime.timestamp = System.currentTimeMillis();
+        PASSWORD_CACHE_MAP.put(key, cachedPasswordWithTime);
+    }
+
+    private static String getCachedPassword(CardConfig cardConfig, String key) {
+        final CachedPasswordWithTime cachedPasswordWithTime = PASSWORD_CACHE_MAP.get(key);
+        if (cachedPasswordWithTime == null) {
+            return null;
+        }
+        final long defaultPasswordCacheTimeMillis = TimeUnit.DAYS.toMillis(1);
+        final long passwordCacheTimeMillis = (cardConfig.getPasswordCacheTimeMillis() == null)
+                ? defaultPasswordCacheTimeMillis
+                : cardConfig.getPasswordCacheTimeMillis();
+        if ((System.currentTimeMillis() - cachedPasswordWithTime.timestamp) > passwordCacheTimeMillis) {
+            PASSWORD_CACHE_MAP.remove(key);
+            return null;
+        }
+        cachedPasswordWithTime.timestamp = System.currentTimeMillis();
+        return cachedPasswordWithTime.password;
+    }
 
     public static boolean isCheckPassphraseStored() {
         final StackTraceElement stack = getCallerStackTrace();
@@ -161,7 +191,7 @@ public class Utils {
         params.add("--auto-pbe");
         params.add("--json");
 
-        final String password = PASSWORD_CACHE_MAP.get(vault);
+        final String password = getCachedPassword(cardConfig, vault);
         if (password != null) {
             params.add("--password");
             params.add(password);
@@ -180,7 +210,7 @@ public class Utils {
         final String resultString = new String(decryptResult.getStdout(), StandardCharsets.UTF_8);
         final CardHmacDecryptResult result = new Gson().fromJson(resultString, CardHmacDecryptResult.class);
         if (result.getPassword() != null) {
-            PASSWORD_CACHE_MAP.put(vault, result.getPassword());
+            putCachedPassword(cardConfig, vault, result.getPassword());
         }
         return Base64.getDecoder().decode(result.getPlaintext());
     }
@@ -195,7 +225,7 @@ public class Utils {
         params.add("1000000");
         params.add("--json");
 
-        final String password = PASSWORD_CACHE_MAP.get(vault);
+        final String password = getCachedPassword(cardConfig, vault);
         if (password != null) {
             params.add("--password");
             params.add(password);