forked from mirror/pixelfed
58 lines
936 B
PHP
58 lines
936 B
PHP
<?php
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namespace App\Util\Lexer;
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use Illuminate\Support\Str;
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use App\Util\ActivityPub\Helpers;
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class Bearcap
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{
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public static function encode($url, $token)
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{
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return "bear:?t={$token}&u={$url}";
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}
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public static function decode($str)
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{
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if(!Str::startsWith($str, 'bear:')) {
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return false;
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}
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$query = parse_url($str, PHP_URL_QUERY);
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if(!$query) {
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return false;
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}
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$res = [];
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$parts = Str::of($str)->substr(6)->explode('&')->toArray();
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foreach($parts as $part) {
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if(Str::startsWith($part, 't=')) {
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$res['token'] = substr($part, 2);
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}
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if(Str::startsWith($part, 'u=')) {
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$res['url'] = substr($part, 2);
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}
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}
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if( !isset($res['token']) ||
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!isset($res['url'])
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) {
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return false;
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}
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$url = $res['url'];
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if(mb_substr($url, 0, 8) !== 'https://') {
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return false;
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}
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$valid = filter_var($url, FILTER_VALIDATE_URL);
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if(!$valid) {
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return false;
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}
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return $res;
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}
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}
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