#704 Implement reloading via injector

- Create interfaces Reloadable and SettingsDependent to recognize reloadable classes
- Iterate through instances in injector to reload

src/main/java/fr/xephi/authme/security/PasswordSecurity.java

@@ -3,6 +3,7 @@ package fr.xephi.authme.security;
 import fr.xephi.authme.datasource.DataSource;
 import fr.xephi.authme.events.PasswordEncryptionEvent;
 import fr.xephi.authme.initialization.AuthMeServiceInitializer;
+import fr.xephi.authme.initialization.Reloadable;
 import fr.xephi.authme.security.crypts.EncryptionMethod;
 import fr.xephi.authme.security.crypts.HashedPassword;
 import fr.xephi.authme.settings.NewSetting;
@@ -15,7 +16,7 @@ import javax.inject.Inject;
 /**
  * Manager class for password-related operations.
  */
-public class PasswordSecurity {
+public class PasswordSecurity implements Reloadable {
 
     @Inject
     private NewSetting settings;
@@ -36,6 +37,7 @@ public class PasswordSecurity {
      * Load or reload the configuration.
      */
     @PostConstruct
+    @Override
     public void reload() {
         this.algorithm = settings.getProperty(SecuritySettings.PASSWORD_HASH);
         this.supportOldAlgorithm = settings.getProperty(SecuritySettings.SUPPORT_OLD_PASSWORD_HASH);

src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java

@@ -1,6 +1,7 @@
 package fr.xephi.authme.security.crypts;
 
 import fr.xephi.authme.ConsoleLogger;
+import fr.xephi.authme.initialization.SettingsDependent;
 import fr.xephi.authme.security.crypts.description.HasSalt;
 import fr.xephi.authme.security.crypts.description.Recommendation;
 import fr.xephi.authme.security.crypts.description.SaltType;
@@ -13,13 +14,13 @@ import javax.inject.Inject;
 
 @Recommendation(Usage.RECOMMENDED) // provided the salt length is >= 8
 @HasSalt(value = SaltType.TEXT) // length depends on the bcryptLog2Rounds setting
-public class BCRYPT implements EncryptionMethod {
+public class BCRYPT implements EncryptionMethod, SettingsDependent {
 
-    private final int bCryptLog2Rounds;
+    private int bCryptLog2Rounds;
 
     @Inject
     public BCRYPT(NewSetting settings) {
-        this.bCryptLog2Rounds = settings.getProperty(HooksSettings.BCRYPT_LOG2_ROUND);
+        loadSettings(settings);
     }
 
     @Override
@@ -52,4 +53,9 @@ public class BCRYPT implements EncryptionMethod {
     public boolean hasSeparateSalt() {
         return false;
     }
+
+    @Override
+    public void loadSettings(NewSetting settings) {
+        bCryptLog2Rounds = settings.getProperty(HooksSettings.BCRYPT_LOG2_ROUND);
+    }
 }

src/main/java/fr/xephi/authme/security/crypts/SALTED2MD5.java

@@ -1,5 +1,6 @@
 package fr.xephi.authme.security.crypts;
 
+import fr.xephi.authme.initialization.SettingsDependent;
 import fr.xephi.authme.security.RandomString;
 import fr.xephi.authme.security.crypts.description.HasSalt;
 import fr.xephi.authme.security.crypts.description.Recommendation;
@@ -14,13 +15,13 @@ import static fr.xephi.authme.security.HashUtils.md5;
 
 @Recommendation(Usage.ACCEPTABLE) // presuming that length is something sensible (>= 8)
 @HasSalt(value = SaltType.TEXT)   // length defined by the doubleMd5SaltLength setting
-public class SALTED2MD5 extends SeparateSaltMethod {
+public class SALTED2MD5 extends SeparateSaltMethod implements SettingsDependent {
 
-    private final int saltLength;
+    private int saltLength;
 
     @Inject
     public SALTED2MD5(NewSetting settings) {
-        saltLength = settings.getProperty(SecuritySettings.DOUBLE_MD5_SALT_LENGTH);
+        loadSettings(settings);
     }
 
     @Override
@@ -33,4 +34,9 @@ public class SALTED2MD5 extends SeparateSaltMethod {
         return RandomString.generateHex(saltLength);
     }
 
+    @Override
+    public void loadSettings(NewSetting settings) {
+        saltLength = settings.getProperty(SecuritySettings.DOUBLE_MD5_SALT_LENGTH);
+    }
+
 }

src/main/java/fr/xephi/authme/security/crypts/SMF.java

@@ -4,6 +4,7 @@ import fr.xephi.authme.security.HashUtils;
 
 public class SMF extends UsernameSaltMethod {
 
+    @Override
     public HashedPassword computeHash(String password, String name) {
         return new HashedPassword(HashUtils.sha1(name.toLowerCase() + password));
     }