NicoSeigaResolver::class, '~nijie\.info/view(_popup)?\.php~' => NijieResolver::class, '~komiflo\.com(/#!)?/comics/(\\d+)~' => KomifloResolver::class, '~www\.melonbooks\.co\.jp/detail/detail\.php~' => MelonbooksResolver::class, '~ec\.toranoana\.jp/tora_r/ec/item/.*~' => ToranoanaResolver::class, '~iwara\.tv/videos/.*~' => IwaraResolver::class, '~www\.dlsite\.com/.*/work/=/product_id/..\d+\.html~' => DLsiteResolver::class, '~www\.pixiv\.net/member_illust\.php\?illust_id=\d+~' => PixivResolver::class, '~fantia\.jp/posts/\d+~' => FantiaResolver::class, '~dmm\.co\.jp/~' => FanzaResolver::class, '~www\.patreon\.com/~' => PatreonResolver::class, '~www\.deviantart\.com/.*/art/.*~' => DeviantArtResolver::class, '~\.syosetu\.com/n\d+[a-z]{2,}~' => NarouResolver::class, '~ci-en\.jp/creator/\d+/article/\d+~' => CienResolver::class, ]; public $mimeTypes = [ 'application/activity+json' => ActivityPubResolver::class, 'application/ld+json' => ActivityPubResolver::class, 'text/html' => OGPResolver::class, '*/*' => OGPResolver::class ]; public $defaultResolver = OGPResolver::class; public function resolve(string $url): Metadata { foreach ($this->rules as $pattern => $class) { if (preg_match($pattern, $url) === 1) { /** @var Resolver $resolver */ $resolver = app($class); return $resolver->resolve($url); } } $result = $this->resolveWithAcceptHeader($url); if ($result !== null) { return $result; } if (isset($this->defaultResolver)) { /** @var Resolver $resolver */ $resolver = app($this->defaultResolver); return $resolver->resolve($url); } throw new \UnexpectedValueException('URL not matched.'); } public function resolveWithAcceptHeader(string $url): ?Metadata { try { // Rails等はAcceptに */* が入っていると、ブラウザの適当なAcceptヘッダだと判断して全部無視してしまう。 // c.f. https://github.com/rails/rails/issues/9940 // そこでここでは */* を「Acceptヘッダを無視してきたレスポンス(よくある)」のハンドラとして扱い、 // Acceptヘッダには */* を足さないことにする。 $acceptTypes = array_diff(array_keys($this->mimeTypes), ['*/*']); $client = app(Client::class); $res = $client->request('GET', $url, [ 'headers' => [ 'Accept' => implode(', ', $acceptTypes) ] ]); if ($res->getStatusCode() === 200) { preg_match('/^[^;\s]+/', $res->getHeaderLine('Content-Type'), $matches); $mimeType = $matches[0]; if (isset($this->mimeTypes[$mimeType])) { $class = $this->mimeTypes[$mimeType]; $parser = app($class); return $parser->parse($res->getBody()); } if (isset($this->mimeTypes['*/*'])) { $class = $this->mimeTypes['*/*']; $parser = app($class); return $parser->parse($res->getBody()); } } else { // code < 400 && code !== 200 => fallback } } catch (ClientException $e) { // 406 Not Acceptable は多分Acceptが原因なので無視してフォールバック if ($e->getResponse()->getStatusCode() !== 406) { throw $e; } } catch (ServerException $e) { // 5xx は変なAcceptが原因かもしれない(?)ので無視してフォールバック } return null; } }