101 lines
3 KiB
PHP
101 lines
3 KiB
PHP
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<?php
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namespace App\Http\Controllers;
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use App\Note;
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use Illuminate\Http\Request;
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use Illuminate\Http\Response;
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use App\Jobs\SendWebMentions;
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use App\Jobs\ProcessWebMention;
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use Jonnybarnes\IndieWeb\Numbers;
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use Illuminate\Database\Eloquent\ModelNotFoundException;
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class WebMentionsController extends Controller
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{
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/**
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* Receive and process a webmention.
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*
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* @param \Illuminate\Http\Request $request
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* @return \Illuminate\Http\Respone
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*/
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public function receive(Request $request)
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{
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//first we trivially reject requets that lack all required inputs
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if (($request->has('target') !== true) || ($request->has('source') !== true)) {
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return new Response(
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'You need both the target and source parameters',
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400
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);
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}
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//next check the $target is valid
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$path = parse_url($request->input('target'))['path'];
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$pathParts = explode('/', $path);
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switch ($pathParts[1]) {
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case 'notes':
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//we have a note
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$noteId = $pathParts[2];
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$numbers = new Numbers();
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$realId = $numbers->b60tonum($noteId);
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try {
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$note = Note::findOrFail($realId);
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$this->dispatch(new ProcessWebMention($note, $request->input('source')));
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} catch (ModelNotFoundException $e) {
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return new Response('This note doesn’t exist.', 400);
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}
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return new Response(
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'Webmention received, it will be processed shortly',
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202
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);
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break;
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case 'blog':
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return new Response(
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'I don’t accept webmentions for blog posts yet.',
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501
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);
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break;
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default:
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return new Response(
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'Invalid request',
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400
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);
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break;
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}
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}
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/**
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* Send a webmention.
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*
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* @param \App\Note $note
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* @return array An array of successful then failed URLs
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*/
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public function send(Note $note)
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{
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//grab the URLs
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$urlsInReplyTo = explode(' ', $note->in_reply_to);
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$urlsNote = $this->getLinks($note->note);
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$urls = array_filter(array_merge($urlsInReplyTo, $urlsNote)); //filter out none URLs
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foreach ($urls as $url) {
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$this->dispatch(new SendWebMentions($url, $note->longurl));
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}
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}
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/**
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* Get the URLs from a note.
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*/
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private function getLinks($html)
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{
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$urls = [];
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$dom = new \DOMDocument();
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$dom->loadHTML($html);
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$anchors = $dom->getElementsByTagName('a');
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foreach ($anchors as $anchor) {
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$urls[] = ($anchor->hasAttribute('href')) ? $anchor->getAttribute('href') : false;
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}
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return $urls;
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}
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}
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