98 lines
2.6 KiB
PHP
98 lines
2.6 KiB
PHP
<?php
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namespace com\fwdekker\deathnotifier;
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use Exception;
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use Monolog\ErrorHandler;
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use Monolog\Handler\StreamHandler;
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use Monolog\Logger;
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/**
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* Helper functions.
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*/
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class Util
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{
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/**
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* Sets HTTP status code and exits the script.
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*
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* @param int $status the HTTP status code to set
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* @return never
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*/
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static function http_exit(int $status): never
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{
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http_response_code($status);
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exit(1);
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}
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/**
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* Reads the configuration file and overrides it with the user's custom values.
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*
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* @return array<string, array<string, mixed>>|null the configuration
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*/
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static function read_config(): ?array
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{
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// TODO: Check permissions, return `null` if too permissive
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$config = parse_ini_file("config.default.ini.php", process_sections: true, scanner_mode: INI_SCANNER_TYPED);
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if ($config === false) return null;
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if (file_exists("config.ini.php")) {
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$config_custom = parse_ini_file("config.ini.php", process_sections: true, scanner_mode: INI_SCANNER_TYPED);
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if ($config_custom === false) return null;
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$config = array_replace_recursive($config, $config_custom);
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}
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return $config;
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}
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/**
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* Creates the main logger instance.
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*
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* @param array<string, mixed> $logger_config the logger section of the configuration
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* @return Logger the main logger instance
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*/
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static function create_logger(array $logger_config): Logger
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{
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$logger = new Logger("main");
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$logger->pushHandler(new StreamHandler($logger_config["file"], $logger_config["level"]));
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ErrorHandler::register($logger);
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return $logger;
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}
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/**
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* Parses POST values from JSON-based inputs.
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*
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* @return array<string, mixed>|null the parsed POST-ed values
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*/
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static function parse_post(): ?array
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{
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$output = $_POST;
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$post_input = file_get_contents("php://input");
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if ($post_input !== false)
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$output = json_decode($post_input, associative: true);
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return $output;
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}
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/**
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* Generates an appropriate CSRF token.
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*
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* @param Logger $logger the logger to use if something goes wrong
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* @return string|null the CSRF token, or `null` if no CSRF token could be created
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*/
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static function generate_csrf_token(Logger $logger): ?string
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{
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try {
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return bin2hex(random_bytes(32));
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} catch (Exception $exception) {
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$logger->emergency("Failed to generate token.", ["cause" => $exception]);
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return null;
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}
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}
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}
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