recovery del pass hecho en el backend a falta de hacer los formularios

pom.xml

@@ -102,12 +102,6 @@
 			<version>1.17.2</version>
 		</dependency>
 
-		<dependency>
-			<groupId>org.jsoup</groupId>
-			<artifactId>jsoup</artifactId>
-			<version>1.17.2</version>
-		</dependency>
-
 		<!-- Escape seguro al renderizar -->
 		<dependency>
 			<groupId>org.owasp.encoder</groupId>
@@ -115,6 +109,17 @@
 			<version>1.3.1</version>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-mail</artifactId>
+		</dependency>
+		<!-- Rate limiting -->
+		<dependency>
+			<groupId>com.bucket4j</groupId>
+			<artifactId>bucket4j-core</artifactId>
+			<version>8.10.1</version>
+		</dependency>
+
 	</dependencies>
 
 	<build>

src/main/java/com/imprimelibros/erp/auth/PasswordResetController.java

@@ -0,0 +1,133 @@
+package com.imprimelibros.erp.auth;
+
+import com.imprimelibros.erp.common.RateLimiterService;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.validation.constraints.NotBlank;
+
+import org.springframework.context.MessageSource;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import com.imprimelibros.erp.common.EmailService;
+import com.imprimelibros.erp.users.UserDao;
+
+import java.util.Locale;
+import java.util.Map;
+
+@Controller
+@RequestMapping("/password")
+@Validated
+public class PasswordResetController {
+
+    private final PasswordResetService resetService;
+    private final EmailService emailService;          // tu servicio de correo HTML
+    private final UserDao userRepo;           // tu repo de usuarios
+    private final RateLimiterService rateLimiter;
+    private final MessageSource messageSource;
+
+    public PasswordResetController(PasswordResetService resetService,
+                                   EmailService emailService,
+                                   UserDao userRepo,
+                                   RateLimiterService rateLimiter,
+                                   MessageSource messageSource) {
+        this.resetService = resetService;
+        this.emailService = emailService;
+        this.userRepo = userRepo;
+        this.rateLimiter = rateLimiter;
+        this.messageSource = messageSource;
+    }
+
+    /** Endpoint para solicitar el email de reseteo (respuesta neutra y rate limiting) */
+    @PostMapping("/request")
+    @ResponseBody
+    public ResponseEntity<?> requestReset(@RequestParam("email") String email, HttpServletRequest req, Locale locale) {
+        String clientIp = extractClientIp(req);
+
+        // RATE LIMIT: 5/15min por IP -> si se supera, 429 con mensaje neutro
+        if (!rateLimiter.tryConsume("reset:" + clientIp)) {
+            // No revelamos nada concreto
+            return ResponseEntity.status(HttpStatus.TOO_MANY_REQUESTS)
+                    .body(Map.of("message",
+                    messageSource.getMessage("auth.reset.request.success", null, locale)));
+        }
+
+        userRepo.findByUserNameIgnoreCase(email).ifPresent(user -> {
+            String token = resetService.createTokenForUser(
+                    user.getId(),
+                    1, // caduca en 1h
+                    clientIp,
+                    req.getHeader("User-Agent")
+            );
+            String resetLink = buildResetLink(req, token);
+            try {
+                emailService.sendPasswordResetMail(user.getUserName(), user.getFullName(), resetLink, locale);
+            } catch (Exception ignored) {
+                // Deliberadamente no variamos la respuesta para no filtrar info
+            }
+        });
+
+        // Respuesta neutra SIEMPRE en 200 (si no fue 429)
+        return ResponseEntity.ok(Map.of("message",
+                messageSource.getMessage("auth.reset.request.success", null, locale)));
+    }
+
+    /** Muestra formulario si el token es válido */
+    @GetMapping("/reset")
+    public String showResetForm(@RequestParam("token") String token, Model model) {
+        Long userId = resetService.validateTokenAndGetUserId(token);
+        if (userId == null) {
+            model.addAttribute("invalidToken", true);
+            return "auth/reset-invalid";
+        }
+        model.addAttribute("token", token);
+        return "auth/reset-form";
+    }
+
+    /** Procesa y guarda nueva contraseña */
+    @PostMapping("/reset")
+    public String handleReset(
+            @RequestParam("token") String token,
+            @RequestParam("password") @NotBlank String password,
+            @RequestParam("confirmPassword") @NotBlank String confirmPassword,
+            Model model, Locale locale
+    ) {
+        if (!password.equals(confirmPassword)) {
+            model.addAttribute("token", token);
+            model.addAttribute("error", messageSource.getMessage("auth.reset.form.passwordsMismatch", null, locale));
+            return "auth/reset-form";
+        }
+
+        try {
+            resetService.consumeTokenAndSetPassword(token, password);
+            return "redirect:/login?resetOk";
+        } catch (IllegalArgumentException ex) {
+            model.addAttribute("invalidToken", true);
+            return "auth/reset-invalid";
+        }
+    }
+
+    private static String extractClientIp(HttpServletRequest req) {
+        // Soporte detrás de proxy
+        String xff = req.getHeader("X-Forwarded-For");
+        if (xff != null && !xff.isBlank()) {
+            // coger el primer IP de la cadena
+            return xff.split(",")[0].trim();
+        }
+        String realIp = req.getHeader("X-Real-IP");
+        if (realIp != null && !realIp.isBlank()) return realIp.trim();
+        return req.getRemoteAddr();
+    }
+
+    private static String buildResetLink(HttpServletRequest req, String token) {
+        String scheme = req.getHeader("X-Forwarded-Proto");
+        if (scheme == null || scheme.isBlank()) scheme = req.getScheme(); // http/https
+        String host = req.getHeader("Host"); // respeta el host público bajo proxy
+        if (host == null || host.isBlank()) host = req.getServerName() + (req.getServerPort() != 80 && req.getServerPort() != 443 ? ":" + req.getServerPort() : "");
+        String ctx = req.getContextPath() == null ? "" : req.getContextPath();
+        return scheme + "://" + host + ctx + "/password/reset?token=" + token;
+    }
+}

src/main/java/com/imprimelibros/erp/auth/PasswordResetService.java

@@ -0,0 +1,86 @@
+package com.imprimelibros.erp.auth;
+
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+
+import com.imprimelibros.erp.users.UserDao;
+
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.SecureRandom;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.HexFormat;
+
+@Service
+public class PasswordResetService {
+
+    private final PasswordResetTokenRepository tokenRepo;
+    private final UserDao userRepo; // tu repo real
+    private final PasswordEncoder passwordEncoder;
+
+    private static final SecureRandom RNG = new SecureRandom();
+    private static final HexFormat HEX = HexFormat.of();
+
+    public PasswordResetService(PasswordResetTokenRepository tokenRepo, UserDao userRepo, PasswordEncoder enc) {
+        this.tokenRepo = tokenRepo;
+        this.userRepo = userRepo;
+        this.passwordEncoder = enc;
+    }
+
+    /** Elimina tokens previos sin usar, genera uno nuevo y lo guarda con auditoría básica. */
+    public String createTokenForUser(Long userId, int hoursToExpire, String requestIp, String userAgent) {
+        // Invalidar anteriores
+        tokenRepo.deleteAllByUserIdAndUsedAtIsNull(userId);
+
+        // Generar token
+        byte[] raw = new byte[32];
+        RNG.nextBytes(raw);
+        String token = HEX.formatHex(raw);               // token plano (64 hex)
+        String tokenHash = sha256(token);
+
+        PasswordResetToken prt = new PasswordResetToken();
+        prt.setUserId(userId);
+        prt.setTokenHash(tokenHash);
+        prt.setExpiresAt(Instant.now().plus(hoursToExpire, ChronoUnit.HOURS));
+        prt.setRequestIp(truncate(requestIp, 64));
+        prt.setUserAgent(truncate(userAgent, 255));
+        tokenRepo.save(prt);
+
+        return token; // Esto se envía por email
+    }
+
+    public Long validateTokenAndGetUserId(String tokenPlain) {
+        return tokenRepo.findByTokenHashAndUsedAtIsNullAndExpiresAtAfter(sha256(tokenPlain), Instant.now())
+                .map(PasswordResetToken::getUserId)
+                .orElse(null);
+    }
+
+    public void consumeTokenAndSetPassword(String tokenPlain, String newPassword) {
+        var tokenOpt = tokenRepo.findByTokenHashAndUsedAtIsNullAndExpiresAtAfter(sha256(tokenPlain), Instant.now());
+        var prt = tokenOpt.orElseThrow(() -> new IllegalArgumentException("Token inválido o caducado"));
+
+        var user = userRepo.findById(prt.getUserId())
+                .orElseThrow(() -> new IllegalStateException("Usuario no encontrado"));
+
+        user.setPassword(passwordEncoder.encode(newPassword));
+        userRepo.save(user);
+
+        prt.setUsedAt(Instant.now());
+        tokenRepo.save(prt);
+    }
+
+    private static String sha256(String s) {
+        try {
+            MessageDigest md = MessageDigest.getInstance("SHA-256");
+            return HEX.formatHex(md.digest(s.getBytes(StandardCharsets.UTF_8)));
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static String truncate(String v, int max) {
+        if (v == null) return null;
+        return v.length() <= max ? v : v.substring(0, max);
+    }
+}

src/main/java/com/imprimelibros/erp/auth/PasswordResetToken.java

@@ -0,0 +1,102 @@
+package com.imprimelibros.erp.auth;
+
+import jakarta.persistence.*;
+import java.time.Instant;
+
+@Entity
+@Table(name = "password_reset_tokens", indexes = {
+        @Index(name = "idx_prt_token_hash", columnList = "tokenHash"),
+        @Index(name = "idx_prt_user_id", columnList = "userId")
+})
+public class PasswordResetToken {
+
+    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false) private Long userId;
+
+    @Column(nullable = false, length = 128)
+    private String tokenHash; // SHA-256 hex
+
+    @Column(nullable = false)
+    private Instant expiresAt;
+
+    @Column(nullable = false)
+    private Instant createdAt = Instant.now();
+
+    private Instant usedAt;
+
+    // Auditoría ligera (GDPR: documéntalo y limita retención)
+    @Column(length = 64)
+    private String requestIp;
+
+    @Column(length = 255)
+    private String userAgent;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Long userId) {
+        this.userId = userId;
+    }
+
+    public String getTokenHash() {
+        return tokenHash;
+    }
+
+    public void setTokenHash(String tokenHash) {
+        this.tokenHash = tokenHash;
+    }
+
+    public Instant getExpiresAt() {
+        return expiresAt;
+    }
+
+    public void setExpiresAt(Instant expiresAt) {
+        this.expiresAt = expiresAt;
+    }
+
+    public Instant getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(Instant createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public Instant getUsedAt() {
+        return usedAt;
+    }
+
+    public void setUsedAt(Instant usedAt) {
+        this.usedAt = usedAt;
+    }
+
+    public String getRequestIp() {
+        return requestIp;
+    }
+
+    public void setRequestIp(String requestIp) {
+        this.requestIp = requestIp;
+    }
+
+    public String getUserAgent() {
+        return userAgent;
+    }
+
+    public void setUserAgent(String userAgent) {
+        this.userAgent = userAgent;
+    }
+
+    // getters/setters
+    
+}

src/main/java/com/imprimelibros/erp/auth/PasswordResetTokenRepository.java

@@ -0,0 +1,13 @@
+package com.imprimelibros.erp.auth;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import java.time.Instant;
+import java.util.Optional;
+
+public interface PasswordResetTokenRepository extends JpaRepository<PasswordResetToken, Long> {
+
+    Optional<PasswordResetToken> findByTokenHashAndUsedAtIsNullAndExpiresAtAfter(String tokenHash, Instant now);
+
+    // Para invalidar anteriores
+    long deleteAllByUserIdAndUsedAtIsNull(Long userId);
+}

src/main/java/com/imprimelibros/erp/common/EmailService.java

@@ -0,0 +1,54 @@
+package com.imprimelibros.erp.common;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+
+import org.springframework.context.MessageSource;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Service;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.util.Locale;
+import java.util.Map;
+
+@Service
+public class EmailService {
+
+    private final JavaMailSender mailSender;
+    private final TemplateEngine templateEngine;
+    private final MessageSource messageSource;
+
+    public EmailService(JavaMailSender mailSender, TemplateEngine templateEngine, MessageSource messageSource) {
+        this.mailSender = mailSender;
+        this.templateEngine = templateEngine;
+        this.messageSource = messageSource;
+    }
+
+    public void sendPasswordResetMail(String to, String username, String resetLink, Locale locale) throws MessagingException {
+        MimeMessage message = mailSender.createMimeMessage();
+        MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
+
+        helper.setFrom("no-reply@imprimelibros.com");
+        helper.setTo(to);
+        helper.setSubject(messageSource.getMessage("email.resetPassword.title", null, locale));
+
+        // Variables para la plantilla
+        Context context = new Context();
+        context.setVariables(Map.of(
+                "username", username,
+                "resetLink", resetLink,
+                "year", String.valueOf(java.time.Year.now().getValue())
+        ));
+
+        // Procesar plantilla HTML
+        String html = templateEngine.process("email/password-reset", context);
+        helper.setText(html, true);
+
+        helper.addInline("companyLogo", new ClassPathResource("static/images/logo-light.png"));
+
+        mailSender.send(message);
+    }
+}

src/main/java/com/imprimelibros/erp/common/RateLimiterService.java

@@ -0,0 +1,26 @@
+package com.imprimelibros.erp.common;
+
+import io.github.bucket4j.Bandwidth;
+import io.github.bucket4j.Bucket;
+import io.github.bucket4j.Refill;
+import org.springframework.stereotype.Service;
+
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Service
+public class RateLimiterService {
+
+    private final Map<String, Bucket> buckets = new ConcurrentHashMap<>();
+
+    // 5 solicitudes cada 15 minutos por clave (IP)
+    private Bucket newBucket() {
+        Bandwidth limit = Bandwidth.classic(5, Refill.greedy(5, Duration.ofMinutes(15)));
+        return Bucket.builder().addLimit(limit).build();
+    }
+
+    public boolean tryConsume(String key) {
+        return buckets.computeIfAbsent(key, k -> newBucket()).tryConsume(1);
+    }
+}

src/main/java/com/imprimelibros/erp/users/UserDao.java

@@ -1,14 +1,17 @@
 package com.imprimelibros.erp.users;
 
 import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
 
 @Repository
 public interface UserDao extends JpaRepository<User, Long>, JpaSpecificationExecutor<User> {
 
-
     User findByUserNameAndEnabledTrue(String userName);
+    Optional<User> findByUserNameIgnoreCase(String userName);
     boolean existsByUserNameIgnoreCase(String userName);
     boolean existsByUserNameIgnoreCaseAndIdNot(String userName, Long id);
 }

src/main/resources/application.properties

@@ -59,3 +59,13 @@ security.rememberme.key=N`BY^YRVO:/\H$hsKxNq
 # Enable HiddenHttpMethodFilter to support PUT and DELETE methods in forms
 #
 spring.mvc.hiddenmethod.filter.enabled=true
+
+#
+# Email
+#
+spring.mail.host=smtp.ionos.es
+spring.mail.port=587
+spring.mail.username=no-reply@imprimelibros.com
+spring.mail.password=%j4Su*#ZcjRDYsa$
+spring.mail.properties.mail.smtp.auth=true
+spring.mail.properties.mail.smtp.starttls.enable=true

src/main/resources/i18n/auth_es.properties

@@ -0,0 +1,2 @@
+auth.reset.request.success=Si existe una cuenta asociada, se han enviado las instrucciones.
+auth.reset.form.passwordsMismatch=Las contraseñas no coinciden.

src/main/resources/i18n/email_en.properties

@@ -0,0 +1 @@
+

src/main/resources/i18n/email_es.properties

@@ -0,0 +1,6 @@
+email.resetPassword.title=Restablecer contraseña
+email.greeting=Hola
+email.resetPassword.body=Hemos recibido una solicitud para restablecer tu contraseña. Haz clic en el siguiente botón:
+email.resetPassword.button=Restablecer contraseña
+email.resetPassword.ignoreMessage=Si no solicitaste este cambio, puedes ignorar este mensaje.
+email.footer=Imprimelibros - Todos los derechos reservados.

src/main/resources/static/assets/css/email.css

@@ -0,0 +1,35 @@
+body {
+    font-family: Arial, sans-serif;
+    background: #f8f9fa;
+    padding: 20px;
+}
+
+.container {
+    background: #fff;
+    border-radius: 8px;
+    padding: 20px;
+    max-width: 600px;
+    margin: auto;
+    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
+}
+
+.header {
+    text-align: center;
+    margin-bottom: 20px;
+}
+
+.btn {
+    display: inline-block;
+    padding: 10px 20px;
+    background: #0d6efd;
+    color: #fff;
+    text-decoration: none;
+    border-radius: 5px;
+}
+
+.footer {
+    margin-top: 20px;
+    font-size: 12px;
+    color: #6c757d;
+    text-align: center;
+}

src/main/resources/templates/imprimelibros/email/password-reset.html

@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+
+<head>
+    <meta charset="UTF-8">
+    <title th:text="#{email.resetPassword.title}">Recuperación de contraseña</title>
+    <link rel="stylesheet" th:href="@{/css/email.css}">
+</head>
+
+<body>
+    <div class="container">
+        <div class="header">
+            <!-- Logo insertado como imagen inline -->
+            <img th:src="@{cid:companyLogo}" alt="Logo Imprimelibros" width="150">
+        </div>
+
+        <p><span th:text="#{email.greeting}">Hola</span> <b th:text="${username}">Usuario</b>,</p>
+        <p th:text="#{email.resetPassword.body}">Hemos recibido una solicitud para restablecer tu contraseña. Haz clic en el siguiente botón:</p>
+
+        <p style="text-align:center;">
+            <a th:href="${resetLink}" class="btn" th:text="#{email.resetPassword.button}">Restablecer contraseña</a>
+        </p>
+
+        <p th:text="#{email.resetPassword.ignoreMessage}">Si no solicitaste este cambio, puedes ignorar este mensaje.</p>
+
+        <div class="footer">
+            © <span th:text="${year}">2025</span> <span th:text="#{email.footer}">Imprimelibros - Todos los derechos reservados.</span>
+        </div>
+
+    </div>
+</body>
+
+</html>