Implemented public key fetching

src/main/java/hhn/labsw/bugageocaching/controller/Controller.java

@@ -2,7 +2,6 @@ package hhn.labsw.bugageocaching.controller;
 
 import com.google.gson.Gson;
 import hhn.labsw.bugageocaching.entities.*;
-import hhn.labsw.bugageocaching.exceptions.IllegalParameterException;
 import hhn.labsw.bugageocaching.repositories.*;
 import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.ExpiredJwtException;
@@ -14,12 +13,12 @@ import org.springframework.security.crypto.bcrypt.BCrypt;
 import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.PostConstruct;
-import java.security.SecureRandom;
+import java.security.Key;
 import java.util.*;
-import java.util.concurrent.atomic.AtomicLong;
 
 import static hhn.labsw.bugageocaching.util.CacheConstructionUtil.createCacheUtil;
 import static hhn.labsw.bugageocaching.util.CacheConstructionUtil.deleteCacheUtil;
+import static hhn.labsw.bugageocaching.util.VerificationUtil.fetchPublicKey;
 
 @RestController
 public class Controller {
@@ -44,13 +43,12 @@ public class Controller {
 
   @Autowired
   UserRepository userRepository;
-  byte[] key = new byte[64];
-  private AtomicLong counter = new AtomicLong();
+
+  Key key;
 
   @PostConstruct
   public void init() {
-    new SecureRandom().nextBytes(key);
-    System.out.println(Arrays.toString(key));
+    key = fetchPublicKey();
   }
 
   @CrossOrigin(origins = "http://localhost:8081") // only for dev purpose
@@ -103,7 +101,7 @@ public class Controller {
   @RequestMapping("/api/startCache")
   @ResponseBody
   public ResponseEntity startCache(@RequestParam(value = "token", defaultValue = "-1") String token,
-                                   @RequestParam String cacheID) throws IllegalParameterException {
+                                   @RequestParam String cacheID) {
 
     if (!token.equals("-1")) { // ein angemeldeter user startet den cache(es werden zwei parameter übergeben)
 

src/main/java/hhn/labsw/bugageocaching/fetchObjects/PublicKey.java

@@ -0,0 +1,13 @@
+package hhn.labsw.bugageocaching.fetchObjects;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class PublicKey {
+
+  private String message;
+
+  public String getMessage() {
+    return message;
+  }
+}

src/main/java/hhn/labsw/bugageocaching/util/CacheConstructionUtil.java

@@ -9,7 +9,6 @@ import hhn.labsw.bugageocaching.repositories.CacheRepository;
 import hhn.labsw.bugageocaching.repositories.StationRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.RequestParam;
 
 import javax.persistence.RollbackException;
 import java.util.ArrayList;
@@ -27,7 +26,7 @@ public class CacheConstructionUtil {
   @Autowired
   static BearbeitetRepository bearbeitetRepository;
 
-  public static ResponseEntity createCacheUtil(Cache cache){
+  public static ResponseEntity createCacheUtil(Cache cache) {
 
     // Stationen werden in die Datenbank eingetragen
     for (Station station : cache.getStationen()) {
@@ -58,14 +57,6 @@ public class CacheConstructionUtil {
 
     cacheRepository.save(cache);
 
-    /*for (int i = 0; i + 1 < cache.getStationen().size(); i++) {
-      StationReihenfolge stationReihenfolge = new StationReihenfolge();
-      stationReihenfolge.setCache(cache);
-      stationReihenfolge.setStation(cache.getStationen().get(i));
-      stationReihenfolge.setNachfolgeStation(cache.getStationen().get(i + 1));
-      stationReihenfolgeRepository.save(stationReihenfolge);
-    }*/
-
     return ResponseEntity.status(200).body(new Gson().toJson(cache));
   }
 
@@ -101,7 +92,7 @@ public class CacheConstructionUtil {
 
     try {
       station.setCode(code);
-    }catch (RollbackException e){
+    } catch (RollbackException e) {
       return ResponseEntity.status(400).body("There was an error generating the unique code");
     }
 

src/main/java/hhn/labsw/bugageocaching/util/VerificationUtil.java

@@ -0,0 +1,34 @@
+package hhn.labsw.bugageocaching.util;
+
+import hhn.labsw.bugageocaching.fetchObjects.PublicKey;
+import org.springframework.web.client.RestTemplate;
+
+import java.security.Key;
+import java.security.KeyFactory;
+import java.security.spec.X509EncodedKeySpec;
+import java.util.Base64;
+
+public class VerificationUtil {
+
+  public static Key fetchPublicKey() {
+    RestTemplate restTemplate = new RestTemplate();
+    try {
+      PublicKey response = restTemplate.getForObject("http://seserver.se.hs-heilbronn.de:8090/buga19usermanagement/token/publickey", PublicKey.class);
+      byte[] decodedKey = Base64.getDecoder().decode(response.getMessage());
+      KeyFactory factory = KeyFactory.getInstance("RSA");
+      X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(decodedKey);
+      Key key = factory.generatePublic(publicKeySpec);
+
+      return key;
+    } catch (Exception e) {
+      e.printStackTrace();
+    }
+
+    //Fehler muss zurückgegeben werden
+    return null;
+  }
+
+  public void verifyToken() {
+
+  }
+}