Fix FLEXIAPI-239 Ensure to return the correct error codes as stated in the RFC6750 section 3.1

CHANGELOG.md

@@ -10,6 +10,7 @@ v1.6
 - Fix FLEXIAPI-212 Add CoTURN credentials support in the provisioning
 - Fix FLEXIAPI-213 Add TURN credentials support in the API as defined in draft-uberti-behave-turn-rest-00
 - Fix FLEXIAPI-216 Implement the RFC 8898 partially... for HTTP
+- Fix FLEXIAPI-239 Ensure to return the correct error codes as stated in the RFC6750 section 3.1
 
 v1.5
 ---

flexiapi/app/Http/Middleware/AuthenticateJWT.php

@@ -41,7 +41,7 @@ class AuthenticateJWT
     {
         if ($request->bearerToken() && config('services.jwt.rsa_public_key_pem')) {
             if (!extension_loaded('sodium')) {
-                abort(403, "Your PHP setup doesn't have the Sodium extension loaded");
+                abort(403, "PHP Sodium extension isn't loaded");
             }
 
             $publicKey = InMemory::plainText(config('services.jwt.rsa_public_key_pem'));
@@ -64,15 +64,15 @@ class AuthenticateJWT
             }
 
             if ($signer == null) {
-                abort(403, 'Unsupported RSA signature');
+                return $this->generateUnauthorizedBearerResponse('invalid_token', 'Unsupported RSA signature');
             }
 
             if (!(new Validator())->validate($token, new SignedWith($signer, $publicKey))) {
-                abort(403, 'Invalid JWT token signature');
+                return $this->generateUnauthorizedBearerResponse('invalid_token', 'Invalid JWT token signature');
             }
 
             if ($token->isExpired(new DateTimeImmutable())) {
-                abort(403, 'Expired JWT token');
+                return $this->generateUnauthorizedBearerResponse('invalid_token', 'Expired JWT token');
             }
 
             $account = null;
@@ -114,4 +114,16 @@ class AuthenticateJWT
 
         return $next($request);
     }
+
+    private function generateUnauthorizedBearerResponse(string $error, string $description): Response
+    {
+        $response = new Response();
+        $response->header(
+            'WWW-Authenticate',
+            'Bearer error="' . $error .'", "'. $description . '"'
+        );
+        $response->setStatusCode(401);
+
+        return $response;
+    }
 }

flexiapi/tests/Feature/AccountJWTAuthenticationTest.php

@@ -129,15 +129,16 @@ class AccountJWTAuthenticationTest extends TestCase
             ): Builder => $builder->withClaim('email', $password->account->email)
         );
 
-        $this->withHeaders([
+        $response = $this->withHeaders([
                 'Authorization' => 'Bearer ' . $token->toString(),
                 'x-linphone-provisioning' => true,
             ])
             ->get($this->accountRoute)
-            ->assertStatus(403);
+            ->assertStatus(401);
 
-        // Expired token
+       $this->assertStringContainsString('invalid_token', $response->headers->get('WWW-Authenticate'));
 
+        // Wrong email
         $token = (new JwtFacade(null, $clock))->issue(
             new Sha256(),
             InMemory::plainText($this->serverPrivateKeyPem),
@@ -155,7 +156,6 @@ class AccountJWTAuthenticationTest extends TestCase
             ->assertStatus(403);
 
         // Wrong signature key
-
         $keys = openssl_pkey_new(array("private_key_bits" => 4096,"private_key_type" => OPENSSL_KEYTYPE_RSA));
         openssl_pkey_export($keys, $wrongServerPrivateKeyPem);
 
@@ -173,7 +173,7 @@ class AccountJWTAuthenticationTest extends TestCase
                 'x-linphone-provisioning' => true,
             ])
             ->get($this->accountRoute)
-            ->assertStatus(403);
+            ->assertStatus(401);
     }
 
     public function testAuthBearerUrl()