fixed some issue for the token authorization (#87)

Reviewed-on: #87
Reviewed-by: Debucquoy Anthony <d.tonitch@gmail.com>
Co-authored-by: Bartha Maxime <231026@umons.ac.be>
Co-committed-by: Bartha Maxime <231026@umons.ac.be>

backend/src/main/java/ovh/herisson/Clyde/Services/TokenService.java

@@ -20,12 +20,19 @@ public class TokenService {
         this.tokenRepo = tokenRepo;
     }
 
+    public Iterable<Token> getAllTokens() {
+        return tokenRepo.findAll();
+    }
+
 
     public String generateNewToken(){
         byte[] bytes = new byte[64];
         new SecureRandom().nextBytes(bytes);
         for (int i = 0; i < bytes.length; i++) {
             bytes[i] = (byte) (((bytes[i]+256)%256  %95+ 32));
+            while ((char)bytes[i] == ';'){
+                bytes[i] = new SecureRandom().generateSeed(1)[0];
+            }
         }
         // will never end up in the catch because of the way that SecureRandom.nextBytes is implemented
         try {
@@ -35,8 +42,10 @@ public class TokenService {
         }
     }
 
-    public User getUserFromToken(String token){
-        return tokenRepo.getByToken(token).getUser();
+    public User getUserFromToken(String token) {
+        Token tokenRep = tokenRepo.getByToken(token);
+        if (tokenRep == null) return null;
+        return tokenRep.getUser();
     }
 
     public void saveToken(String token, User user, Date expirationDate){// todo faire qlq chose de l'expDate