53 lines
1.7 KiB
PHP
53 lines
1.7 KiB
PHP
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<?php
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namespace App\Services\Visio;
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use App\Models\Seance;
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use RuntimeException;
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/**
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* Jeton JWT (HS256) qui ouvre une salle Jitsi : Prosody le vérifie avec le
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* même secret. Le nom vient du jeton et ne se modifie pas ; seul le prof a
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* moderator = true (module natif token_affiliation de Prosody).
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*/
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class JetonVisio
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{
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public function pour(Seance $seance, string $identifiant, string $nom, bool $moderateur): string
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{
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$secret = config('visio.jwt.secret');
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if (! is_string($secret) || strlen($secret) < 32 || $seance->visio_salle === null) {
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throw new RuntimeException('Visio non configurée ou salle non ouverte.');
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}
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$maintenant = time();
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$charge = [
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'iss' => config('visio.jwt.app_id'),
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'aud' => config('visio.jwt.audience'),
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'sub' => '*',
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'room' => $seance->visio_salle,
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'iat' => $maintenant,
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'nbf' => $maintenant - 10,
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'exp' => $maintenant + 60 * (int) config('visio.jwt.duree_minutes'),
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'context' => [
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'user' => [
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'id' => $identifiant,
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'name' => $nom,
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'moderator' => $moderateur,
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],
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],
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];
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$entete = $this->base64Url(json_encode(['alg' => 'HS256', 'typ' => 'JWT']));
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$corps = $this->base64Url(json_encode($charge, JSON_UNESCAPED_UNICODE));
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$signature = $this->base64Url(hash_hmac('sha256', "{$entete}.{$corps}", $secret, true));
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return "{$entete}.{$corps}.{$signature}";
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}
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private function base64Url(string $donnees): string
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{
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return rtrim(strtr(base64_encode($donnees), '+/', '-_'), '=');
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}
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}
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