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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Config; |
| 6 | |
| 7 | use Cosray\Exception\RuntimeException; |
| 8 | use Cosray\Util\IpRange; |
| 9 | use DateTimeZone; |
| 10 | |
| 11 | final class App |
| 12 | { |
| 13 | private ?DateTimeZone $timezoneCache = null; |
| 14 | |
| 15 | public function __construct( |
| 16 | private readonly \Cosray\Config $config, |
| 17 | ) {} |
| 18 | |
| 19 | public string $name { |
| 20 | get => $this->config->get('app.name'); |
| 21 | } |
| 22 | |
| 23 | /** |
| 24 | * The site's name as people read it, in mails for example, unlike |
| 25 | * `app.name`, which names the session cookies. |
| 26 | */ |
| 27 | public string $title { |
| 28 | get { |
| 29 | $title = $this->config->get('app.title'); |
| 30 | |
| 31 | if (is_string($title) && trim($title) !== '') { |
| 32 | return trim($title); |
| 33 | } |
| 34 | |
| 35 | return parse_url((string) $this->url, PHP_URL_HOST) ?: $this->name; |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | public bool $debug { |
| 40 | get => $this->config->get('app.debug'); |
| 41 | } |
| 42 | |
| 43 | public string $env { |
| 44 | get => $this->config->get('app.env'); |
| 45 | } |
| 46 | |
| 47 | public string $urlPrefix { |
| 48 | get => $this->config->get('app.url_prefix'); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * The absolute URL the application is served under, like |
| 53 | * `https://example.org`, for links that leave the request behind, like |
| 54 | * those in mails. Never taken from the request's host header. |
| 55 | */ |
| 56 | public ?string $url { |
| 57 | get => self::url($this->config->get('app.url')); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Addresses and CIDR ranges of reverse proxies whose `X-Forwarded-For` |
| 62 | * names the client. |
| 63 | * |
| 64 | * @var list<non-empty-string> |
| 65 | */ |
| 66 | public array $trustedProxies { |
| 67 | get => self::proxies($this->config->get('app.trusted_proxies')); |
| 68 | } |
| 69 | |
| 70 | public DateTimeZone $timezone { |
| 71 | get => $this->timezoneCache ??= new DateTimeZone($this->config->get('app.timezone')); |
| 72 | } |
| 73 | |
| 74 | public ?string $secret { |
| 75 | get => $this->config->get('app.secret'); |
| 76 | } |
| 77 | |
| 78 | private static function url(mixed $url): ?string |
| 79 | { |
| 80 | if ($url === null || $url === '') { |
| 81 | return null; |
| 82 | } |
| 83 | |
| 84 | if (!is_string($url) || preg_match('#^https?://[^/\s]+#i', $url) !== 1) { |
| 85 | throw new RuntimeException('`app.url` takes an absolute http or https URL, like https://example.org.'); |
| 86 | } |
| 87 | |
| 88 | return rtrim($url, '/'); |
| 89 | } |
| 90 | |
| 91 | /** @return list<non-empty-string> */ |
| 92 | private static function proxies(mixed $proxies): array |
| 93 | { |
| 94 | $proxies = is_string($proxies) ? explode(',', $proxies) : $proxies; |
| 95 | |
| 96 | if (!is_array($proxies)) { |
| 97 | throw new RuntimeException('`app.trusted_proxies` takes a list of IP addresses and CIDR ranges.'); |
| 98 | } |
| 99 | |
| 100 | $valid = []; |
| 101 | |
| 102 | foreach ($proxies as $proxy) { |
| 103 | $proxy = is_string($proxy) ? trim($proxy) : ''; |
| 104 | |
| 105 | if ($proxy === '') { |
| 106 | continue; |
| 107 | } |
| 108 | |
| 109 | if (!IpRange::valid($proxy)) { |
| 110 | throw new RuntimeException("`app.trusted_proxies` has {$proxy}, which is no IP address or CIDR range."); |
| 111 | } |
| 112 | |
| 113 | $valid[] = $proxy; |
| 114 | } |
| 115 | |
| 116 | return $valid; |
| 117 | } |
| 118 | } |