Feature/hu 03 change password

src/main/java/smartpot/com/api/Exception/EncryptionException.java

@@ -0,0 +1,7 @@
+package smartpot.com.api.Exception;
+
+public class EncryptionException extends RuntimeException {
+    public EncryptionException(String message) {
+        super(message);
+    }
+}

src/main/java/smartpot/com/api/Security/Config/Filters/JwtAuthFilter.java

@@ -12,21 +12,17 @@
 import org.springframework.web.filter.OncePerRequestFilter;
 import smartpot.com.api.Security.Service.JwtService;
 import smartpot.com.api.Users.Model.DTO.UserDTO;
-import smartpot.com.api.Users.Service.SUser;
 
 import java.io.IOException;
 
 @Component
 public class JwtAuthFilter extends OncePerRequestFilter {
 
     // TODO: implement role for jwt
-
     private final JwtService jwtService;
-    private final SUser serviceUser;
 
-    public JwtAuthFilter(JwtService jwtService, SUser serviceUser) {
+    public JwtAuthFilter(JwtService jwtService) {
         this.jwtService = jwtService;
-        this.serviceUser = serviceUser;
     }
 
     @Override
@@ -35,16 +31,14 @@ protected void doFilterInternal(
             @NonNull HttpServletResponse response,
             @NonNull FilterChain filterChain
     ) throws ServletException, IOException {
-
         String authHeader = request.getHeader("Authorization");
         try {
             UserDTO user = jwtService.validateAuthHeader(authHeader);
             UsernamePasswordAuthenticationToken authToken = new UsernamePasswordAuthenticationToken(
                     user, user.getPassword(), null /* user.getAuthorities() */);
             authToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
             SecurityContextHolder.getContext().setAuthentication(authToken);
-        } catch (Exception ignored) {
-        }
+        } catch (Exception ignored) {}
         filterChain.doFilter(request, response);
     }
 }

src/main/java/smartpot/com/api/Security/Controller/AuthController.java

@@ -123,9 +123,9 @@ public ResponseEntity<?> forgotPassword(@RequestBody UserDTO reqUser) {
                     )
             }
     )
-    public ResponseEntity<?> resetPassword(@RequestBody UserDTO reqUser, @RequestHeader("Authorization") String resetToken) {
+    public ResponseEntity<?> resetPassword(@RequestBody UserDTO reqUser, @RequestHeader("Authorization") String token, @RequestHeader("Reset-Token") String resetToken) {
         try {
-            return new ResponseEntity<>(new TokenResponse(jwtService.resetPassword(reqUser)), HttpStatus.OK);
+            return new ResponseEntity<>(new TokenResponse(jwtService.resetPassword(reqUser, jwtService.validateAuthHeader(token).getEmail(), resetToken)), HttpStatus.OK);
         } catch (Exception e) {
             return new ResponseEntity<>(new ErrorResponse("Error al restablecer contraseña [" + e.getMessage() + "]", HttpStatus.BAD_REQUEST.value()), HttpStatus.BAD_REQUEST);
         }

src/main/java/smartpot/com/api/Security/Model/DTO/ResetTokenDTO.java

@@ -0,0 +1,32 @@
+package smartpot.com.api.Security.Model.DTO;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Data
+@NoArgsConstructor
+public class ResetTokenDTO {
+    private String token;
+    private String operation;
+    private Date expiration;
+
+    public ResetTokenDTO(String token, String operation, Date expiration) {
+        this.token = token;
+        this.operation = operation;
+        this.expiration = expiration;
+    }
+
+    static public String convertToJson(ResetTokenDTO resetToken) throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        return objectMapper.writeValueAsString(resetToken);
+    }
+
+    public static ResetTokenDTO convertToDTO(String json) throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        return objectMapper.readValue(json, ResetTokenDTO.class);
+    }
+}

src/main/java/smartpot/com/api/Security/Service/AESEncryptionService.java

@@ -0,0 +1,83 @@
+package smartpot.com.api.Security.Service;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import smartpot.com.api.Exception.EncryptionException;
+
+import javax.crypto.*;
+import javax.crypto.spec.GCMParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.Base64;
+
+@Service
+public class AESEncryptionService implements EncryptionServiceI {
+
+    SecureRandom random = new SecureRandom();
+    @Value("${application.security.aes.key}")
+    private String aesKey;
+
+    public AESEncryptionService() {}
+
+    private SecretKey getSecretKey() {
+        byte[] decoded = Base64.getDecoder().decode(aesKey);
+        if (decoded.length != 32) {
+            throw new IllegalArgumentException("La clave debe tener 256 bits (32 bytes)");
+        }
+        return new SecretKeySpec(decoded, "AES");
+    }
+
+    @Override
+    public String encrypt(String data) throws EncryptionException {
+        try {
+            // get salt
+            byte[] salt = new byte[8];
+            random.nextBytes(salt);
+            String saltedData = Base64.getEncoder().encodeToString(salt) + ":" + data;
+
+            byte[] iv = new byte[12];
+            random.nextBytes(iv);
+            SecretKey key = getSecretKey(); // get encryption key
+            Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
+            cipher.init(Cipher.ENCRYPT_MODE, key, new GCMParameterSpec(128, iv));
+
+            byte[] encrypted = cipher.doFinal(saltedData.getBytes());
+
+            byte[] output = new byte[iv.length + encrypted.length];
+            System.arraycopy(iv, 0, output, 0, iv.length);
+            System.arraycopy(encrypted, 0, output, iv.length, encrypted.length);
+            return Base64.getUrlEncoder().encodeToString(output);
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | // if you need more specific errors, catch each one separately
+                 InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
+            throw new EncryptionException("Error while encrypting data");
+        }
+
+    }
+
+    @Override
+    public String decrypt(String encryptedData) throws EncryptionException {
+        try {
+            byte[] decoded = Base64.getUrlDecoder().decode(encryptedData);
+
+            byte[] iv = new byte[12];
+            byte[] cipherText = new byte[decoded.length - 12];
+            System.arraycopy(decoded, 0, iv, 0, 12);
+            System.arraycopy(decoded, 12, cipherText, 0, cipherText.length);
+
+            SecretKey key = getSecretKey();
+            Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
+            cipher.init(Cipher.DECRYPT_MODE, key, new GCMParameterSpec(128, iv));
+            String result = new String(cipher.doFinal(cipherText));
+
+            // remove salt
+            return result.split(":", 2)[1];
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | // if you need more specific errors, catch each one separately
+                 InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
+            throw new EncryptionException("Error while decrypting data");
+        }
+
+    }
+}

src/main/java/smartpot/com/api/Security/Service/EncryptionServiceI.java

@@ -0,0 +1,15 @@
+package smartpot.com.api.Security.Service;
+
+import smartpot.com.api.Exception.EncryptionException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+public interface EncryptionServiceI {
+    String encrypt(String plainText) throws EncryptionException, NoSuchPaddingException, NoSuchAlgorithmException, IllegalBlockSizeException, BadPaddingException, InvalidAlgorithmParameterException, InvalidKeyException;
+    String decrypt(String cipherText) throws EncryptionException;
+}

src/main/java/smartpot/com/api/Security/Service/JwtService.java

@@ -10,25 +10,24 @@
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.stereotype.Service;
+import smartpot.com.api.Exception.EncryptionException;
 import smartpot.com.api.Exception.InvalidTokenException;
 import smartpot.com.api.Mail.Model.DTO.EmailDTO;
 import smartpot.com.api.Mail.Service.EmailService;
 import smartpot.com.api.Mail.Validator.EmailValidatorI;
+import smartpot.com.api.Security.Model.DTO.ResetTokenDTO;
 import smartpot.com.api.Users.Model.DTO.UserDTO;
 import smartpot.com.api.Users.Service.SUserI;
-
 import javax.crypto.SecretKey;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Optional;
+import java.util.*;
 
 @Service
 public class JwtService implements JwtServiceI {
 
     private final SUserI serviceUser;
     private final EmailService emailService;
     private final EmailValidatorI emailValidator;
+    private final EncryptionServiceI encryptionService;
 
     @Value("${application.security.jwt.secret-key}")
     private String secretKey;
@@ -41,29 +40,27 @@ public class JwtService implements JwtServiceI {
      * @param serviceUser servicio que maneja las operaciones de base de datos.
      */
     @Autowired
-    public JwtService(SUserI serviceUser, EmailService emailService, EmailValidatorI emailValidator) {
+    public JwtService(SUserI serviceUser, EmailService emailService, EmailValidatorI emailValidator, EncryptionServiceI encryptionService) {
         this.serviceUser = serviceUser;
         this.emailService = emailService;
         this.emailValidator = emailValidator;
+        this.encryptionService = encryptionService;
     }
 
     @Override
     public String Login(UserDTO reqUser) throws Exception {
         return Optional.of(serviceUser.getUserByEmail(reqUser.getEmail()))
                 .filter(userDTO -> new BCryptPasswordEncoder().matches(reqUser.getPassword(), userDTO.getPassword()))
-                .map(validUser -> generateToken(validUser.getId(), validUser.getEmail()))
+                .map(validUser -> {
+                    try {
+                        return generateToken(validUser.getId(), validUser.getEmail());
+                    } catch (Exception e) {
+                        throw new ValidationException(e);
+                    }
+                })
                 .orElseThrow(() -> new Exception("Credenciales Invalidas"));
-
-    }
-
-    @Override
-    public String Register(UserDTO reqUser) throws Exception {
-        return Optional.ofNullable(serviceUser.CreateUser(reqUser))
-                .map(user -> generateToken(reqUser.getId(), user.getEmail()))
-                .orElseThrow(() -> new Exception("User already registered."));
     }
-
-    private String generateToken(String id, String email) {
+    private String generateToken(String id, String email) throws Exception {
         // TODO: Refine token (email != subject)
         Map<String, Object> claims = new HashMap<>();
         claims.put("id", id);
@@ -75,11 +72,13 @@ private String generateToken(String id, String email) {
 
     @Override
     public UserDTO validateAuthHeader(String authHeader) throws Exception {
-        if (authHeader == null || !authHeader.startsWith("Bearer ")) {
-            throw new Exception("El encabezado de autorización es inválido. Se esperaba 'Bearer <token>'.");
+        if (authHeader == null || !authHeader.startsWith("SmartPot-OAuth ")) {
+            throw new Exception("El encabezado de autorización es inválido. Se esperaba 'SmartPot-OAuth <token>'.");
         }
 
         String token = authHeader.split(" ")[1];
+        token = encryptionService.decrypt(token);
+
         String email = extractEmail(token);
         UserDetails user = serviceUser.loadUserByUsername(email);
         if (email == null) {
@@ -93,27 +92,53 @@ public UserDTO validateAuthHeader(String authHeader) throws Exception {
         UserDTO finalUser = serviceUser.getUserByEmail(email);
         finalUser.setPassword("");
         return finalUser;
-
     }
 
     @Override
-    public String resetPassword(UserDTO reqUser) throws Exception {
-        return Optional.of(serviceUser.getUserByEmail(reqUser.getEmail()))
+    public String resetPassword(UserDTO user, String email, String resetToken) throws Exception {
+        return Optional.of(serviceUser.getUserByEmail(email))
                 .map(validUser -> {
                     try {
-                        return serviceUser.UpdateUser(validUser.getId(), validUser);
+                        String decrypted = encryptionService.decrypt(resetToken);
+                        ResetTokenDTO resetTokenDTO = ResetTokenDTO.convertToDTO(decrypted);
+
+                        if (!validateResetToken(resetTokenDTO)) {
+                            throw new ValidationException("Provided reset token is not valid");
+                        }
+
+                        return serviceUser.UpdateUserPassword(validUser, user.getPassword());
+                    } catch (Exception e) {
+                        throw new ValidationException(e);
+                    }
+                })
+                .map(validUser -> {
+                    try {
+                        return generateToken(validUser.getId(), validUser.getEmail());
                     } catch (Exception e) {
                         throw new ValidationException(e);
                     }
                 })
-                .map(validUser -> generateToken(validUser.getId(), validUser.getEmail()))
                 .orElseThrow(() -> new Exception("Credenciales Invalidas"));
     }
 
     @Override
     public Boolean forgotPassword(String email) throws Exception {
         return Optional.of(serviceUser.getUserByEmail(email))
-                .map(validUser -> generateToken(validUser.getId(), validUser.getEmail()))
+                .map(validUser -> {
+                    try {
+                        return generateToken(validUser.getId(), validUser.getEmail());
+                    } catch (Exception e) {
+                        throw new ValidationException(e);
+                    }
+                })
+                .map(token -> new ResetTokenDTO(token, "reset", new Date(System.currentTimeMillis() + expiration) ))
+                .map(token -> {
+                    try {
+                        return encryptionService.encrypt(ResetTokenDTO.convertToJson(token));
+                    } catch (Exception e) {
+                        throw new EncryptionException("Conversion to json or encryption failed: " + e);
+                    }
+                })
                 .map(token -> new EmailDTO(null, email, "Token para recuperar contraseña: " + token, "Recuperar contraseña", "", null, "true"))
                 .map(emailService::sendSimpleMail)
                 .map(ValidDTO -> {
@@ -136,19 +161,26 @@ private Boolean validateToken(String token, UserDetails userDetails) {
         }
         String username = extractUsername(token);
         return userDetails.getUsername().equals(username) && !expirationDate.before(new Date());
+    }
 
-
+    private Boolean validateResetToken(ResetTokenDTO resetTokenDTO) {
+        String token = encryptionService.decrypt(resetTokenDTO.getToken());
+        if (!validateToken(token, serviceUser.loadUserByUsername(extractEmail(token)))) {
+            return false;
+        }
+        return !resetTokenDTO.getExpiration().before(new Date());
     }
 
-    private String createToken(Map<String, Object> claims, String username) {
-        return Jwts.builder()
+    private String createToken(Map<String, Object> claims, String username) throws Exception {
+        String token = Jwts.builder()
                 .claims(claims)
                 .subject(username)
                 .issuedAt(new Date(System.currentTimeMillis()))
                 .expiration(new Date(System.currentTimeMillis() + expiration))
                 .signWith(getSignKey())
                 //.signWith(getSignKey(), SignatureAlgorithm.HS256)
                 .compact();
+        return encryptionService.encrypt(token);
     }
 
     private SecretKey getSignKey() {
@@ -175,5 +207,4 @@ private String extractUsername(String token) {
     private String extractEmail(String token) {
         return extractAllClaims(token).get("email", String.class);
     }
-
 }

src/main/java/smartpot/com/api/Security/Service/JwtServiceI.java

@@ -9,7 +9,7 @@ public interface JwtServiceI {
 
     UserDTO validateAuthHeader(String token) throws Exception;
 
-    String resetPassword(UserDTO reqUser) throws Exception;
+    String resetPassword(UserDTO reqUser, String email, String resetToken) throws Exception;
 
     Boolean forgotPassword(String email) throws Exception;
 }