Merge branch 'feature/early-fail-disallowed-redirects' into 'master'
Perform validation of redirect URLs during the redirect process. See merge request tt-rss/tt-rss!17
This commit is contained in:
commit
a882eb13f7
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@ -1,4 +1,9 @@
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<?php
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use Psr\Http\Message\RequestInterface;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\UriInterface;
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class UrlHelper {
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const EXTRA_HREF_SCHEMES = [
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"magnet",
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@ -312,13 +317,28 @@ class UrlHelper {
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$req_options = [
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GuzzleHttp\RequestOptions::CONNECT_TIMEOUT => $timeout ?: Config::get(Config::FILE_FETCH_CONNECT_TIMEOUT),
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GuzzleHttp\RequestOptions::TIMEOUT => $timeout ?: Config::get(Config::FILE_FETCH_TIMEOUT),
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GuzzleHttp\RequestOptions::ALLOW_REDIRECTS => $followlocation ? ['max' => 20, 'track_redirects' => true] : false,
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GuzzleHttp\RequestOptions::HEADERS => [
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'User-Agent' => $useragent ?: Config::get_user_agent(),
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],
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'curl' => [],
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];
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if ($followlocation) {
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$req_options[GuzzleHttp\RequestOptions::ALLOW_REDIRECTS] = [
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'max' => 20,
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'track_redirects' => true,
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'on_redirect' => function(RequestInterface $request, ResponseInterface $response, UriInterface $uri) {
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if (!self::validate($uri, true)) {
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self::$fetch_effective_url = (string) $uri;
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throw new GuzzleHttp\Exception\RequestException('URL received during redirection failed extended validation.',
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$request, $response);
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}
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},
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];
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} else {
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$req_options[GuzzleHttp\RequestOptions::ALLOW_REDIRECTS] = false;
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}
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if ($last_modified && !$post_query)
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$req_options[GuzzleHttp\RequestOptions::HEADERS]['If-Modified-Since'] = $last_modified;
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@ -355,7 +375,7 @@ class UrlHelper {
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};
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# Alternative/supplement to `progress` checking
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$req_options[GuzzleHttp\RequestOptions::ON_HEADERS] = function(Psr\Http\Message\ResponseInterface $response) use(&$max_size, $url) {
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$req_options[GuzzleHttp\RequestOptions::ON_HEADERS] = function(ResponseInterface $response) use(&$max_size, $url) {
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$content_length = $response->getHeaderLine('Content-Length');
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if ($content_length > $max_size) {
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Debug::log("[UrlHelper] fetch error: server indicated (via 'Content-Length: {$content_length}') max size of $max_size bytes " .
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@ -426,6 +446,7 @@ class UrlHelper {
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$history_header = $response->getHeader(GuzzleHttp\RedirectMiddleware::HISTORY_HEADER);
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self::$fetch_effective_url = $history_header ? end($history_header) : $url;
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// This shouldn't be necessary given the checks that occur during potential redirects, but we'll do it anyway.
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if (!self::validate(self::$fetch_effective_url, true)) {
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self::$fetch_last_error = "URL received after redirection failed extended validation.";
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$span->setAttribute('error', self::$fetch_last_error);
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@ -74,6 +74,7 @@ final class UrlHelperTest extends TestCase {
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$result = UrlHelper::fetch('https://www.example.com');
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$this->assertEquals(200, UrlHelper::$fetch_last_error_code);
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$this->assertEquals('Hello, World', $result);
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$mock->reset();
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foreach (['ftp://ftp.example.com', 'http://127.0.0.1', 'blah', '', 42, null] as $url) {
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$result = UrlHelper::fetch($url);
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@ -83,24 +84,25 @@ final class UrlHelperTest extends TestCase {
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$mock->append(new Response(200, ['Content-Length' => (string) PHP_INT_MAX]));
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$result = UrlHelper::fetch('https://www.example.com/very-large-content-length');
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$this->assertFalse($result);
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$mock->reset();
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$mock->append(new Response(301, ['Location' => 'https://www.example.com']));
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$result = UrlHelper::fetch(['url' => 'https://example.com', 'followlocation' => false]);
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$this->assertFalse($result);
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$mock->reset();
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$mock->append(
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new Response(301, ['Location' => 'http://127.0.0.1']),
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new Response(200, [], 'Hello, World'),
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);
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$mock->append(new Response(301, ['Location' => 'http://127.0.0.1']));
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$result = UrlHelper::fetch(['url' => 'https://example.com', 'followlocation' => true]);
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$this->assertFalse($result);
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$this->assertEquals('URL received after redirection failed extended validation.', UrlHelper::$fetch_last_error);
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$this->assertMatchesRegularExpression('%failed extended validation%', UrlHelper::$fetch_last_error);
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$this->assertEquals('http://127.0.0.1', UrlHelper::$fetch_effective_url);
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$mock->reset();
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$mock->append(new Response(200, [], ''));
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$result = UrlHelper::fetch('https://www.example.com');
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$this->assertFalse($result);
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$this->assertEquals('Successful response, but no content was received.', UrlHelper::$fetch_last_error);
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$mock->reset();
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// Fake a 403 for basic auth and success with `CURLAUTH_ANY` in the retry attempt
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$mock->append(
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@ -116,5 +118,6 @@ final class UrlHelperTest extends TestCase {
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$this->assertEquals(200, UrlHelper::$fetch_last_error_code);
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$this->assertEquals('Hello, World', $result);
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$this->assertEquals($mock->getLastOptions()['curl'][\CURLOPT_HTTPAUTH], \CURLAUTH_ANY);
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$mock->reset();
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}
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}
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