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