[HttpKernel] Add temporary URI signed

symfony · Aug 27, 2023 · 9f88d63 · 9f88d63
1 parent 62e115f
commit 9f88d63
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Showing 3 changed files with 142 additions and 6 deletions.
diff --git a/src/Symfony/Component/HttpKernel/CHANGELOG.md b/src/Symfony/Component/HttpKernel/CHANGELOG.md
@@ -11,6 +11,8 @@ CHANGELOG
  * Add argument `$validationFailedStatusCode` to `#[MapQueryString]` and `#[MapRequestPayload]`
  * Add argument `$debug` to `Logger`
  * Add class `DebugLoggerConfigurator`
+ * Add optional `$expirationParameter` argument to `UriSigner::__construct()`
+ * Add optional `$expiration` argument to `UriSigner::sign()`
 
 6.3
 ---

diff --git a/src/Symfony/Component/HttpKernel/Tests/UriSignerTest.php b/src/Symfony/Component/HttpKernel/Tests/UriSignerTest.php
@@ -24,21 +24,38 @@ public function testSign()
         $this->assertStringContainsString('?_hash=', $signer->sign('http://example.com/foo'));
         $this->assertStringContainsString('?_hash=', $signer->sign('http://example.com/foo?foo=bar'));
         $this->assertStringContainsString('&foo=', $signer->sign('http://example.com/foo?foo=bar'));
+
+        $this->assertStringContainsString('?_expiration=', $signer->sign('http://example.com/foo', 1));
+        $this->assertStringContainsString('&_hash=', $signer->sign('http://example.com/foo', 1));
+        $this->assertStringContainsString('?_expiration=', $signer->sign('http://example.com/foo?foo=bar', 1));
+        $this->assertStringContainsString('&_hash=', $signer->sign('http://example.com/foo?foo=bar', 1));
+        $this->assertStringContainsString('&foo=', $signer->sign('http://example.com/foo?foo=bar', 1));
     }
 
     public function testCheck()
     {
         $signer = new UriSigner('foobar');
 
+        $this->assertFalse($signer->check('http://example.com/foo'));
         $this->assertFalse($signer->check('http://example.com/foo?_hash=foo'));
         $this->assertFalse($signer->check('http://example.com/foo?foo=bar&_hash=foo'));
         $this->assertFalse($signer->check('http://example.com/foo?foo=bar&_hash=foo&bar=foo'));
 
+        $this->assertFalse($signer->check('http://example.com/foo?_expiration=4070908800'));
+        $this->assertFalse($signer->check('http://example.com/foo?_expiration=4070908800?_hash=foo'));
+        $this->assertFalse($signer->check('http://example.com/foo?_expiration=4070908800&foo=bar&_hash=foo'));
+        $this->assertFalse($signer->check('http://example.com/foo?_expiration=4070908800&foo=bar&_hash=foo&bar=foo'));
+
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo')));
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar')));
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer')));
 
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo', new \DateTime('2099-01-01 00:00:00'))));
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar', new \DateTime('2099-01-01 00:00:00'))));
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTime('2099-01-01 00:00:00'))));
+
         $this->assertSame($signer->sign('http://example.com/foo?foo=bar&bar=foo'), $signer->sign('http://example.com/foo?bar=foo&foo=bar'));
+        $this->assertSame($signer->sign('http://example.com/foo?foo=bar&bar=foo', 1), $signer->sign('http://example.com/foo?bar=foo&foo=bar', 1));
     }
 
     public function testCheckWithDifferentArgSeparator()
@@ -51,6 +68,12 @@ public function testCheckWithDifferentArgSeparator()
             $signer->sign('http://example.com/foo?foo=bar&baz=bay')
         );
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay')));
+
+        $this->assertSame(
+            'http://example.com/foo?_expiration=4070908800&_hash=xfui5FoP0vbD9Cp7pI0tHnqR1Fmj2UARqkIUw7SZVfQ%3D&baz=bay&foo=bar',
+            $signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTime('2099-01-01 00:00:00'))
+        );
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTime('2099-01-01 00:00:00'))));
     }
 
     public function testCheckWithRequest()
@@ -60,17 +83,27 @@ public function testCheckWithRequest()
         $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo'))));
         $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar'))));
         $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar&0=integer'))));
+
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo', new \DateTime('2099-01-01 00:00:00')))));
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar', new \DateTime('2099-01-01 00:00:00')))));
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTime('2099-01-01 00:00:00')))));
     }
 
     public function testCheckWithDifferentParameter()
     {
-        $signer = new UriSigner('foobar', 'qux');
+        $signer = new UriSigner('foobar', 'qux', 'abc');
 
         $this->assertSame(
             'http://example.com/foo?baz=bay&foo=bar&qux=rIOcC%2FF3DoEGo%2FvnESjSp7uU9zA9S%2F%2BOLhxgMexoPUM%3D',
             $signer->sign('http://example.com/foo?foo=bar&baz=bay')
         );
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay')));
+
+        $this->assertSame(
+            'http://example.com/foo?abc=4070908800&baz=bay&foo=bar&qux=hdhUhBVPpzKJdz5ZjC%2FkLvtOYdGKOvKVOczmmMIZK0A%3D',
+            $signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTime('2099-01-01 00:00:00'))
+        );
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTime('2099-01-01 00:00:00'))));
     }
 
     public function testSignerWorksWithFragments()
@@ -81,6 +114,61 @@ public function testSignerWorksWithFragments()
             'http://example.com/foo?_hash=EhpAUyEobiM3QTrKxoLOtQq5IsWyWedoXDPqIjzNj5o%3D&bar=foo&foo=bar#foobar',
             $signer->sign('http://example.com/foo?bar=foo&foo=bar#foobar')
         );
+
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?bar=foo&foo=bar#foobar')));
+
+        $this->assertSame(
+            'http://example.com/foo?_expiration=4070908800&_hash=qHl626U5d7LMsVtBxPt9GNzysdSxyOQ1fHA59Y1ib0Y%3D&bar=foo&foo=bar#foobar',
+            $signer->sign('http://example.com/foo?bar=foo&foo=bar#foobar', new \DateTime('2099-01-01 00:00:00'))
+        );
+
+        $this->assertTrue($signer->check($signer->sign('http://example.com/foo?bar=foo&foo=bar#foobar', new \DateTime('2099-01-01 00:00:00'))));
+    }
+
+    public function testSignWithUriExpiration()
+    {
+        $signer = new UriSigner('foobar');
+
+        $this->assertSame($signer->sign('http://example.com/foo?foo=bar&bar=foo', new \DateTime('2099-01-01 00:00:00')), $signer->sign('http://example.com/foo?bar=foo&foo=bar', 4070908800));
+    }
+
+    public function testSignWithoutExpirationAndWithReservedParameter()
+    {
+        $signer = new UriSigner('foobar');
+
+        $this->expectException(\LogicException::class);
+
+        $signer->sign('http://example.com/foo?_expiration=4070908800');
+    }
+
+    public function testSignWithExpirationAndWithReservedParameter()
+    {
+        $signer = new UriSigner('foobar');
+
+        $this->expectException(\LogicException::class);
+
+        $signer->sign('http://example.com/foo?_expiration=4070908800', new \DateTime('2099-01-01 00:00:00'));
+    }
+
+    public function testCheckWithUriExpiration()
+    {
+        $signer = new UriSigner('foobar');
+
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo', new \DateTime('2000-01-01 00:00:00'))));
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar', new \DateTime('2000-01-01 00:00:00'))));
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTime('2000-01-01 00:00:00'))));
+
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo', 1577836800))); // 2000-01-01
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar', 1577836800))); // 2000-01-01
+        $this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer', 1577836800))); // 2000-01-01
+
+        $relativeUriFromNow1 = $signer->sign('http://example.com/foo', new \DateInterval('PT3S'));
+        $relativeUriFromNow2 = $signer->sign('http://example.com/foo?foo=bar', new \DateInterval('PT3S'));
+        $relativeUriFromNow3 = $signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateInterval('PT3S'));
+        sleep(10);
+
+        $this->assertFalse($signer->check($relativeUriFromNow1));
+        $this->assertFalse($signer->check($relativeUriFromNow2));
+        $this->assertFalse($signer->check($relativeUriFromNow3));
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/UriSigner.php b/src/Symfony/Component/HttpKernel/UriSigner.php
@@ -22,24 +22,35 @@ class UriSigner
 {
     private string $secret;
     private string $parameter;
+    private string $expirationParameter;
 
     /**
-     * @param string $secret    A secret
-     * @param string $parameter Query string parameter to use
+     * @param string $secret              A secret
+     * @param string $parameter           Query string parameter to use
+     * @param string $expirationParameter Query string parameter to use for expiration
      */
-    public function __construct(#[\SensitiveParameter] string $secret, string $parameter = '_hash')
+    public function __construct(#[\SensitiveParameter] string $secret, string $parameter = '_hash', string $expirationParameter = '_expiration')
     {
         $this->secret = $secret;
         $this->parameter = $parameter;
+        $this->expirationParameter = $expirationParameter;
     }
 
     /**
      * Signs a URI.
      *
      * The given URI is signed by adding the query string parameter
      * which value depends on the URI and the secret.
+     *
+     * @param \DateTimeInterface|\DateInterval|int|null $expiration The expiration for the given URI.
+     *                                                              If $expiration is a \DateTimeInterface, it's expected to be the exact date + time.
+     *                                                              If $expiration is a \DateInterval, the interval is added to "now" to get the date + time.
+     *                                                              If $expiration is an int, it's expected to be a timestamp in seconds of the exact date + time.
+     *                                                              If $expiration is null, no expiration.
+     *
+     * The expiration is added as a query string parameter.
      */
-    public function sign(string $uri): string
+    public function sign(string $uri, \DateTimeInterface|\DateInterval|int $expiration = null): string
     {
         $url = parse_url($uri);
         $params = [];
@@ -48,6 +59,14 @@ public function sign(string $uri): string
             parse_str($url['query'], $params);
         }
 
+        if (isset($params[$this->expirationParameter])) {
+            throw new \LogicException(sprintf('URI query parameter conflict. Parameter name "%s" is reserved.', $this->expirationParameter));
+        }
+
+        if (null !== $expiration) {
+            $params[$this->expirationParameter] = $this->getExpirationTime($expiration);
+        }
+
         $uri = $this->buildUrl($url, $params);
         $params[$this->parameter] = $this->computeHash($uri);
 
@@ -56,6 +75,7 @@ public function sign(string $uri): string
 
     /**
      * Checks that a URI contains the correct hash.
+     * Also checks if the URI has not expired (If you used expiration during signing).
      */
     public function check(string $uri): bool
     {
@@ -73,7 +93,15 @@ public function check(string $uri): bool
         $hash = $params[$this->parameter];
         unset($params[$this->parameter]);
 
-        return hash_equals($this->computeHash($this->buildUrl($url, $params)), $hash);
+        if (!hash_equals($this->computeHash($this->buildUrl($url, $params)), $hash)) {
+            return false;
+        }
+
+        if ($expiration = $params[$this->expirationParameter] ?? false) {
+            return !$this->isExpired((int) $expiration);
+        }
+
+        return true;
     }
 
     public function checkRequest(Request $request): bool
@@ -106,4 +134,22 @@ private function buildUrl(array $url, array $params = []): string
 
         return $scheme.$user.$pass.$host.$port.$path.$query.$fragment;
     }
+
+    private function getExpirationTime(\DateTimeInterface|\DateInterval|int $expiration): string
+    {
+        if ($expiration instanceof \DateTimeInterface) {
+            return $expiration->format('U');
+        }
+
+        if ($expiration instanceof \DateInterval) {
+            return (new \DateTimeImmutable())->add($expiration)->format('U');
+        }
+
+        return (string) $expiration;
+    }
+
+    private function isExpired(int $expiration): bool
+    {
+        return ((int) microtime(true)) >= $expiration;
+    }
 }