8000 [HttpKernel] Add temporary URI signed by BaptisteContreras · Pull Request #51502 · symfony/symfony · GitHub
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merged 1 commit into from
Mar 17, 2024
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[HttpKernel] Add temporary URI signed #51502

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3 changes: 3 additions & 0 deletions src/Symfony/Component/HttpFoundation/CHANGELOG.md
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Expand Up @@ -4,6 +4,9 @@ CHANGELOG
7.1
---

* Add optional `$expirationParameter` argument to `UriSigner::__construct()`
* Add optional `$expiration` argument to `UriSigner::sign()`
* Rename `$parameter` argument of `UriSigner::__construct()` to `$hashParameter`
* Add `UploadedFile::getClientOriginalPath()`

7.0
Expand Down
25 changes: 25 additions & 0 deletions src/Symfony/Component/HttpFoundation/Exception/ExceptionInterface.php
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@@ -0,0 +1,25 @@
<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\HttpFoundation\Exception;

interface ExceptionInterface extends \Throwable
{
}
28 changes: 28 additions & 0 deletions src/Symfony/Component/HttpFoundation/Exception/LogicException.php
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@@ -0,0 +1,28 @@
<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\HttpFoundation\Exception;

/**
* Base LogicException for Http Foundation component.
*/
class LogicException extends \LogicException implements ExceptionInterface
{
}
109 changes: 108 additions & 1 deletion src/Symfony/Component/HttpFoundation/Tests/UriSignerTest.php
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Expand Up @@ -12,6 +12,7 @@
namespace Symfony\Component\HttpFoundation\Tests;

use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Exception\LogicException;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\UriSigner;

Expand All @@ -24,21 +25,38 @@ 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 \DateTimeImmutable('2099-01-01 00:00:00'))));
$this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar', new \DateTimeImmutable('2099-01-01 00:00:00'))));
$this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTimeImmutable('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()
Expand All @@ -51,6 +69,12 @@ 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 \DateTimeImmutable('2099-01-01 00:00:00'))
);
$this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTimeImmutable('2099-01-01 00:00:00'))));
}

public function testCheckWithRequest()
Expand All @@ -60,17 +84,27 @@ 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 \DateTimeImmutable('2099-01-01 00:00:00')))));
$this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar', new \DateTimeImmutable('2099-01-01 00:00:00')))));
$this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTimeImmutable('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 \DateTimeImmutable('2099-01-01 00:00:00'))
);
$this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay', new \DateTimeImmutable('2099-01-01 00:00:00'))));
}

public function testSignerWorksWithFragments()
Expand All @@ -81,6 +115,79 @@ 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 \DateTimeImmutable('2099-01-01 00:00:00'))
);

$this->assertTrue($signer->check($signer->sign('http://example.com/foo?bar=foo&foo=bar#foobar', new \DateTimeImmutable('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 \DateTimeImmutable('2099-01-01 00:00:00')), $signer->sign('http://example.com/foo?bar=foo&foo=bar', 4070908800));
}

public function testSignWithoutExpirationAndWithReservedHashParameter()
{
$signer = new UriSigner('foobar');

$this->expectException(LogicException::class);

$signer->sign('http://example.com/foo?_hash=bar');
}

public function testSignWithoutExpirationAndWithReservedParameter()
{
$signer = new UriSigner('foobar');

$this->expectException(LogicException::class);

$signer->sign('http://example.com/foo?_expiration=4070908800');
}

public function testSignWithExpirationAndWithReservedHashParameter()
{
$signer = new UriSigner('foobar');

$this->expectException(LogicException::class);

$signer->sign('http://example.com/foo?_hash=bar', new \DateTimeImmutable('2099-01-01 00:00:00'));
}

public function testSignWithExpirationAndWithReservedParameter()
{
$signer = new UriSigner('foobar');

$this->expectException(LogicException::class);

$signer->sign('http://example.com/foo?_expiration=4070908800', new \DateTimeImmutable('2099-01-01 00:00:00'));
}

public function testCheckWithUriExpiration()
{
$signer = new UriSigner('foobar');

$this->assertFalse($signer->check($signer->sign('http://example.com/foo', new \DateTimeImmutable('2000-01-01 00:00:00'))));
$this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar', new \DateTimeImmutable('2000-01-01 00:00:00'))));
$this->assertFalse($signer->check($signer->sign('http://example.com/foo?foo=bar&0=integer', new \DateTimeImmutable('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));
}
}
67 changes: 57 additions & 10 deletions src/Symfony/Component/HttpFoundation/UriSigner.php
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Expand Up @@ -11,34 +11,47 @@

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\HttpFoundation\Exception\LogicException;

/**
* @author Fabien Potencier <fabien@symfony.com>
*/
class UriSigner
{
private string $secret;
private string $parameter;
private string $hashParameter;
private string $expirationParameter;

/**
* @param string $parameter Query string parameter to use
* @param string $hashParameter 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 $hashParameter = '_hash', string $expirationParameter = '_expiration')
{
if (!$secret) {
throw new \InvalidArgumentException('A non-empty secret is required.');
}

$this->secret = $secret;
$this->parameter = $parameter;
$this->hashParameter = $hashParameter;
$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|null $expiration = null): string
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@nicolas-grekas nicolas-grekas Mar 25, 2024 •
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I missed that this is a BC break. Instead, we should comment the argument on the signature and read it with func_get_arg (see on 6.4 for similar new arguments).

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Is it a BC even if the default value does not change the old behavior of the method ?
Do you want another PR linked to a new issue to fix this ?

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It's a BC break for classes that extend this class. Yes, it'd be great to fix it, PR welcome :)

{
$url = parse_url($uri);
$params = [];
Expand All @@ -47,14 +60,27 @@ public function sign(string $uri): string
parse_str($url['query'], $params);
}

if (isset($params[$this->hashParameter])) {
throw new LogicException(sprintf('URI query parameter conflict: parameter name "%s" is reserved.', $this->hashParameter));
}

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);
$params[$this->hashParameter] = $this->computeHash($uri);

return $this->buildUrl($url, $params);
}

/**
* 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
{
Expand All @@ -65,14 +91,22 @@ public function check(string $uri): bool
parse_str($url['query'], $params);
}

if (empty($params[$this->parameter])) {
if (empty($params[$this->hashParameter])) {
return false;
}

$hash = $params[$this->parameter];
unset($params[$this->parameter]);
$hash = $params[$this->hashParameter];
unset($params[$this->hashParameter]);

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 time() < $expiration;
}

return true;
}

public function checkRequest(Request $request): bool
Expand Down Expand Up @@ -105,4 +139,17 @@ 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 ($expiration instanceof \DateInterval) {
return \DateTimeImmutable::createFromFormat('U', time())->add($expiration)->format('U');
}

return (string) $expiration;
}
}
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