tim
5d657d7e45
The feed links, the notification email, the webmaster address and the cookie domain now use it.
96 lines
2.9 KiB
PHP
96 lines
2.9 KiB
PHP
<?php
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/*
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* Return a configuration value or secret.
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*
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* Values come from the environment first (for example Apache SetEnv),
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* then from the .env file, then from $default. The .env file is the one
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* named by the XXX_ENV_FILE environment variable, or else the .env file
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* next to this one. Git does not track .env; see .env.example.
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*
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* Each line of .env is NAME=value. Blank lines and lines that start
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* with # are skipped, and quotes around a value are removed.
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*/
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function config($key, $default = NULL) {
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static $values = NULL;
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$env = getenv($key);
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if ($env !== FALSE)
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return $env;
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if ($values === NULL) {
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$values = array();
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$file = getenv('XXX_ENV_FILE') ?: __DIR__ . '/.env';
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if (is_readable($file)) {
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foreach (file($file, FILE_IGNORE_NEW_LINES) as $line) {
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$line = trim($line);
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if ($line === '' || $line[0] === '#' || strpos($line, '=') === FALSE)
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continue;
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list($name, $value) = explode('=', $line, 2);
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$name = trim(preg_replace('/^export\s+/', '', $name));
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$value = trim($value);
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if (strlen($value) >= 2 &&
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($value[0] === '"' || $value[0] === "'") &&
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substr($value, -1) === $value[0])
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$value = substr($value, 1, -1);
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$values[$name] = $value;
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}
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}
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}
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return array_key_exists($key, $values) ? $values[$key] : $default;
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}
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/*
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* The address of the site comes from SITE_URL, never from the Host
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* header, which the browser controls. site_url() gives the scheme, host
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* and port (for example "https://xxx.org.za"), and site_host() gives the
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* host. Both are empty if SITE_URL has no host.
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*/
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function site_url_parts() {
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$site = parse_url(trim((string)config('SITE_URL', '')));
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return is_array($site) && !empty($site['host']) ? $site : array();
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}
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function site_host() {
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return site_url_parts()['host'] ?? '';
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}
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function site_url($scheme = NULL) {
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$site = site_url_parts();
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if (!$site)
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return '';
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$port = isset($site['port']) ? ':' . $site['port'] : '';
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return ($scheme ?? $site['scheme'] ?? 'https') . '://' . $site['host'] . $port;
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}
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// An address at the site's host, such as "editor@xxx.org.za"
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function site_email($name) {
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return $name . '@' . site_host();
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}
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// The cookie domain: the site's host and its subdomains
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function cookie_domain() {
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return site_host() === '' ? '' : '.' . site_host();
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}
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/*
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* Send a plain HTTP request to the same page over HTTPS, and stop.
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* Without SITE_URL, the page refuses plain HTTP.
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*/
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function require_https() {
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if (isset($_SERVER['HTTPS']))
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return;
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if (site_url() === '') {
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http_response_code(403);
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echo "This page needs HTTPS.\n";
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} else {
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header('Location: ' . site_url('https') . $_SERVER['REQUEST_URI']);
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}
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exit;
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}
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// Always log PHP errors; show them only if DISPLAY_ERRORS is set (for development)
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ini_set('log_errors', '1');
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ini_set('display_errors', (string)config('DISPLAY_ERRORS', '0'));
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?>
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