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TrustProxiesTest.php
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TrustProxiesTest.php
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<?php
namespace Illuminate\Tests\Http\Middleware;
use Illuminate\Http\Middleware\TrustProxies;
use Illuminate\Http\Request;
use PHPUnit\Framework\TestCase;
class TrustProxiesTest extends TestCase
{
/**
* A list of all proxy headers.
*
* @var int
*/
protected $headerAll = Request::HEADER_X_FORWARDED_FOR | Request::HEADER_X_FORWARDED_HOST | Request::HEADER_X_FORWARDED_PORT | Request::HEADER_X_FORWARDED_PROTO | Request::HEADER_X_FORWARDED_PREFIX | Request::HEADER_X_FORWARDED_AWS_ELB;
/**
* Test that Symfony does indeed NOT trust X-Forwarded-*
* headers when not given trusted proxies.
*
* This re-tests Symfony's Request class, but hopefully provides
* some clarify to developers looking at the tests.
*/
public function test_request_does_not_trust()
{
$req = $this->createProxiedRequest();
$this->assertSame('192.168.10.10', $req->getClientIp(), 'Assert untrusted proxy x-forwarded-for header not used');
$this->assertSame('http', $req->getScheme(), 'Assert untrusted proxy x-forwarded-proto header not used');
$this->assertSame('localhost', $req->getHost(), 'Assert untrusted proxy x-forwarded-host header not used');
$this->assertEquals(8888, $req->getPort(), 'Assert untrusted proxy x-forwarded-port header not used');
$this->assertSame('', $req->getBaseUrl(), 'Assert untrusted proxy x-forwarded-prefix header not used');
}
/**
* Test that Symfony DOES indeed trust X-Forwarded-*
* headers when given trusted proxies.
*
* Again, this re-tests Symfony's Request class.
*/
public function test_does_trust_trusted_proxy()
{
$req = $this->createProxiedRequest();
$req->setTrustedProxies(['192.168.10.10'], $this->headerAll);
$this->assertSame('173.174.200.38', $req->getClientIp(), 'Assert trusted proxy x-forwarded-for header used');
$this->assertSame('https', $req->getScheme(), 'Assert trusted proxy x-forwarded-proto header used');
$this->assertSame('serversforhackers.com', $req->getHost(), 'Assert trusted proxy x-forwarded-host header used');
$this->assertEquals(443, $req->getPort(), 'Assert trusted proxy x-forwarded-port header used');
$this->assertSame('/prefix', $req->getBaseUrl(), 'Assert trusted proxy x-forwarded-prefix header used');
}
/**
* Test the next most typical usage of TrustedProxies:
* Trusted X-Forwarded-For header, wildcard for TrustedProxies.
*/
public function test_trusted_proxy_sets_trusted_proxies_with_wildcard()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, '*');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.38', $request->getClientIp(), 'Assert trusted proxy x-forwarded-for header used with wildcard proxy setting');
});
}
/**
* Test the next most typical usage of TrustedProxies:
* Trusted X-Forwarded-For header, wildcard for TrustedProxies.
*/
public function test_trusted_proxy_sets_trusted_proxies_with_double_wildcard_for_backwards_compat()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, '**');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.38', $request->getClientIp(), 'Assert trusted proxy x-forwarded-for header used with wildcard proxy setting');
});
}
/**
* Test the most typical usage of TrustProxies:
* Trusted X-Forwarded-For header.
*/
public function test_trusted_proxy_sets_trusted_proxies()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, ['192.168.10.10']);
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.38', $request->getClientIp(), 'Assert trusted proxy x-forwarded-for header used');
});
}
/**
* Test X-Forwarded-For header with multiple IP addresses.
*/
public function test_get_client_ips()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, ['192.168.10.10']);
$forwardedFor = [
'192.0.2.2',
'192.0.2.2, 192.0.2.199',
'192.0.2.2, 192.0.2.199, 99.99.99.99',
'192.0.2.2,192.0.2.199',
];
foreach ($forwardedFor as $forwardedForHeader) {
$request = $this->createProxiedRequest(['HTTP_X_FORWARDED_FOR' => $forwardedForHeader]);
$trustedProxy->handle($request, function ($request) use ($forwardedForHeader) {
$ips = $request->getClientIps();
$this->assertSame('192.0.2.2', end($ips), 'Assert sets the '.$forwardedForHeader);
});
}
}
/**
* Test X-Forwarded-For header with multiple IP addresses, with some of those being trusted.
*/
public function test_get_client_ip_with_muliple_ip_addresses_some_of_which_are_trusted()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, ['192.168.10.10', '192.0.2.199']);
$forwardedFor = [
'192.0.2.2',
'192.0.2.2, 192.0.2.199',
'99.99.99.99, 192.0.2.2, 192.0.2.199',
'192.0.2.2,192.0.2.199',
];
foreach ($forwardedFor as $forwardedForHeader) {
$request = $this->createProxiedRequest(['HTTP_X_FORWARDED_FOR' => $forwardedForHeader]);
$trustedProxy->handle($request, function ($request) use ($forwardedForHeader) {
$this->assertSame('192.0.2.2', $request->getClientIp(), 'Assert sets the '.$forwardedForHeader);
});
}
}
/**
* Test X-Forwarded-For header with multiple IP addresses, with * wildcard trusting of all proxies.
*/
public function test_get_client_ip_with_muliple_ip_addresses_all_proxies_are_trusted()
{
$trustedProxy = $this->createTrustedProxy($this->headerAll, '*');
$forwardedFor = [
'192.0.2.2',
'192.0.2.199, 192.0.2.2',
'192.0.2.199,192.0.2.2',
'99.99.99.99,192.0.2.199,192.0.2.2',
];
foreach ($forwardedFor as $forwardedForHeader) {
$request = $this->createProxiedRequest(['HTTP_X_FORWARDED_FOR' => $forwardedForHeader]);
$trustedProxy->handle($request, function ($request) use ($forwardedForHeader) {
$this->assertSame('192.0.2.2', $request->getClientIp(), 'Assert sets the '.$forwardedForHeader);
});
}
}
/**
* Test distrusting a header.
*/
public function test_can_distrust_headers()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_FORWARDED, ['192.168.10.10']);
$request = $this->createProxiedRequest([
'HTTP_FORWARDED' => 'for=173.174.200.40:443; proto=https; host=serversforhackers.com',
'HTTP_X_FORWARDED_FOR' => '173.174.200.38',
'HTTP_X_FORWARDED_HOST' => 'svrs4hkrs.com',
'HTTP_X_FORWARDED_PORT' => '80',
'HTTP_X_FORWARDED_PROTO' => 'http',
]);
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.40', $request->getClientIp(),
'Assert trusted proxy used forwarded header for IP');
$this->assertSame('https', $request->getScheme(),
'Assert trusted proxy used forwarded header for scheme');
$this->assertSame('serversforhackers.com', $request->getHost(),
'Assert trusted proxy used forwarded header for host');
$this->assertEquals(443, $request->getPort(), 'Assert trusted proxy used forwarded header for port');
});
}
/**
* Test that only the X-Forwarded-For header is trusted.
*/
public function test_x_forwarded_for_header_only_trusted()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_X_FORWARDED_FOR, '*');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.38', $request->getClientIp(),
'Assert trusted proxy used forwarded header for IP');
$this->assertSame('http', $request->getScheme(),
'Assert trusted proxy did not use forwarded header for scheme');
$this->assertSame('localhost', $request->getHost(),
'Assert trusted proxy did not use forwarded header for host');
$this->assertEquals(8888, $request->getPort(), 'Assert trusted proxy did not use forwarded header for port');
$this->assertSame('', $request->getBaseUrl(), 'Assert trusted proxy did not use forwarded header for prefix');
});
}
/**
* Test that only the X-Forwarded-Host header is trusted.
*/
public function test_x_forwarded_host_header_only_trusted()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_X_FORWARDED_HOST, '*');
$request = $this->createProxiedRequest(['HTTP_X_FORWARDED_HOST' => 'serversforhackers.com:8888']);
$trustedProxy->handle($request, function ($request) {
$this->assertSame('192.168.10.10', $request->getClientIp(),
'Assert trusted proxy did not use forwarded header for IP');
$this->assertSame('http', $request->getScheme(),
'Assert trusted proxy did not use forwarded header for scheme');
$this->assertSame('serversforhackers.com', $request->getHost(),
'Assert trusted proxy used forwarded header for host');
$this->assertEquals(8888, $request->getPort(), 'Assert trusted proxy did not use forwarded header for port');
$this->assertSame('', $request->getBaseUrl(), 'Assert trusted proxy did not use forwarded header for prefix');
});
}
/**
* Test that only the X-Forwarded-Port header is trusted.
*/
public function test_x_forwarded_port_header_only_trusted()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_X_FORWARDED_PORT, '*');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('192.168.10.10', $request->getClientIp(),
'Assert trusted proxy did not use forwarded header for IP');
$this->assertSame('http', $request->getScheme(),
'Assert trusted proxy did not use forwarded header for scheme');
$this->assertSame('localhost', $request->getHost(),
'Assert trusted proxy did not use forwarded header for host');
$this->assertEquals(443, $request->getPort(), 'Assert trusted proxy used forwarded header for port');
$this->assertSame('', $request->getBaseUrl(), 'Assert trusted proxy did not use forwarded header for prefix');
});
}
/**
* Test that only the X-Forwarded-Prefix header is trusted.
*/
public function test_x_forwarded_prefix_header_only_trusted()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_X_FORWARDED_PREFIX, '*');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('192.168.10.10', $request->getClientIp(),
'Assert trusted proxy did not use forwarded header for IP');
$this->assertSame('http', $request->getScheme(),
'Assert trusted proxy did not use forwarded header for scheme');
$this->assertSame('localhost', $request->getHost(),
'Assert trusted proxy did not use forwarded header for host');
$this->assertEquals(8888, $request->getPort(), 'Assert trusted proxy did not use forwarded header for port');
$this->assertSame('/prefix', $request->getBaseUrl(), 'Assert trusted proxy used forwarded header for prefix');
});
}
/**
* Test that only the X-Forwarded-Proto header is trusted.
*/
public function test_x_forwarded_proto_header_only_trusted()
{
$trustedProxy = $this->createTrustedProxy(Request::HEADER_X_FORWARDED_PROTO, '*');
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('192.168.10.10', $request->getClientIp(),
'Assert trusted proxy did not use forwarded header for IP');
$this->assertSame('https', $request->getScheme(),
'Assert trusted proxy used forwarded header for scheme');
$this->assertSame('localhost', $request->getHost(),
'Assert trusted proxy did not use forwarded header for host');
$this->assertEquals(8888, $request->getPort(), 'Assert trusted proxy did not use forwarded header for port');
$this->assertSame('', $request->getBaseUrl(), 'Assert trusted proxy did not use forwarded header for prefix');
});
}
/**
* Test a combination of individual X-Forwarded-* headers are trusted.
*/
public function test_x_forwarded_multiple_individual_headers_trusted()
{
$trustedProxy = $this->createTrustedProxy(
Request::HEADER_X_FORWARDED_FOR | Request::HEADER_X_FORWARDED_HOST |
Request::HEADER_X_FORWARDED_PORT | Request::HEADER_X_FORWARDED_PROTO,
'*'
);
$request = $this->createProxiedRequest();
$trustedProxy->handle($request, function ($request) {
$this->assertSame('173.174.200.38', $request->getClientIp(),
'Assert trusted proxy used forwarded header for IP');
$this->assertSame('https', $request->getScheme(),
'Assert trusted proxy used forwarded header for scheme');
$this->assertSame('serversforhackers.com', $request->getHost(),
'Assert trusted proxy used forwarded header for host');
$this->assertEquals(443, $request->getPort(), 'Assert trusted proxy used forwarded header for port');
$this->assertSame('', $request->getBaseUrl(), 'Assert trusted proxy did not use forwarded header for prefix');
});
}
/**
* Test to ensure it's reading text-based configurations and converting it correctly.
*/
public function test_is_reading_text_based_configurations()
{
$request = $this->createProxiedRequest();
// trust *all* "X-Forwarded-*" headers
$trustedProxy = $this->createTrustedProxy('HEADER_X_FORWARDED_ALL', '192.168.1.1, 192.168.1.2');
$trustedProxy->handle($request, function (Request $request) {
$this->assertEquals($request->getTrustedHeaderSet(), $this->headerAll,
'Assert trusted proxy used all "X-Forwarded-*" header');
$this->assertEquals($request->getTrustedProxies(), ['192.168.1.1', '192.168.1.2'],
'Assert trusted proxy using proxies as string separated by comma.');
});
// or, if your proxy instead uses the "Forwarded" header
$trustedProxy = $this->createTrustedProxy('HEADER_FORWARDED', '192.168.1.1, 192.168.1.2');
$trustedProxy->handle($request, function (Request $request) {
$this->assertEquals($request->getTrustedHeaderSet(), Request::HEADER_FORWARDED,
'Assert trusted proxy used forwarded header');
$this->assertEquals($request->getTrustedProxies(), ['192.168.1.1', '192.168.1.2'],
'Assert trusted proxy using proxies as string separated by comma.');
});
// or, if you're using AWS ELB
$trustedProxy = $this->createTrustedProxy('HEADER_X_FORWARDED_AWS_ELB', '192.168.1.1, 192.168.1.2');
$trustedProxy->handle($request, function (Request $request) {
$this->assertEquals($request->getTrustedHeaderSet(), Request::HEADER_X_FORWARDED_AWS_ELB,
'Assert trusted proxy used AWS ELB header');
$this->assertEquals($request->getTrustedProxies(), ['192.168.1.1', '192.168.1.2'],
'Assert trusted proxy using proxies as string separated by comma.');
});
}
/**
* Fake an HTTP request by generating a Symfony Request object.
*
* @param array $serverOverrides
* @return \Illuminate\Http\Request
*/
protected function createProxiedRequest($serverOverrides = [])
{
// Add some X-Forwarded headers and over-ride
// defaults, simulating a request made over a proxy
$serverOverrides = array_replace([
'HTTP_X_FORWARDED_FOR' => '173.174.200.38', // X-Forwarded-For -- getClientIp()
'HTTP_X_FORWARDED_HOST' => 'serversforhackers.com', // X-Forwarded-Host -- getHosts()
'HTTP_X_FORWARDED_PORT' => '443', // X-Forwarded-Port -- getPort()
'HTTP_X_FORWARDED_PREFIX' => '/prefix', // X-Forwarded-Prefix -- getBaseUrl()
'HTTP_X_FORWARDED_PROTO' => 'https', // X-Forwarded-Proto -- getScheme() / isSecure()
'SERVER_PORT' => 8888,
'HTTP_HOST' => 'localhost',
'REMOTE_ADDR' => '192.168.10.10',
], $serverOverrides);
// Create a fake request made over "http", one that we'd get over a proxy
// which is likely something like this:
$request = Request::create('http://localhost:8888/tag/proxy', 'GET', [], [], [], $serverOverrides, null);
// Need to make sure these haven't already been set
$request->setTrustedProxies([], $this->headerAll);
return $request;
}
/**
* Create an anonymous middleware class.
*
* @param null|string|int $trustedHeaders
* @param null|array|string $trustedProxies
* @return \Illuminate\Http\Middleware\TrustProxies
*/
protected function createTrustedProxy($trustedHeaders, $trustedProxies)
{
return new class($trustedHeaders, $trustedProxies) extends TrustProxies
{
public function __construct($trustedHeaders, $trustedProxies)
{
$this->headers = $trustedHeaders;
$this->proxies = $trustedProxies;
}
};
}
}