<?php

ini_set("log_errors", true);
ini_set("error_log", __DIR__."/server.log");

function logger() {
	if (!ini_get("date.timezone")) {
		date_default_timezone_set(@date_default_timezone_get());
	}
	error_log(sprintf("%s(%s): %s", 
		basename(getenv("SCRIPT_FILENAME"), ".php"), 
		basename(current(get_included_files()), ".inc"), 
		call_user_func_array("sprintf", func_get_args())
	));
}

$php = getenv('TEST_PHP_EXECUTABLE');
if ($php) {
	define('PHP_BIN', $php);
} else if (defined('PHP_BINARY')) {
	define('PHP_BIN', PHP_BINARY);
} else {
	// PHP-5.3
	define("PHP_BIN", PHP_BINDIR.DIRECTORY_SEPARATOR."php");
}

foreach (array("raphf", "propro", "http") as $ext) {
	if (!extension_loaded($ext)) {
		dl(ext_lib_name($ext));
	}
}

function get_extension_load_arg($bin, $args, $ext) {
	$bin = escapeshellcmd($bin);
	$args = implode(' ', array_map('escapeshellarg', $args));

	// check if php will load the extension with the existing args
	exec(sprintf('%s %s -m', $bin, $args), $output);

	foreach ($output as $line ) {
		if (trim($line) === $ext) {
			return null;
		}
	}

	// try to load the extension with an arg
	$arg = '-dextension=' . ini_get('extension_dir') . '/' . ext_lib_name($ext);
	exec(sprintf('%s %s %s -m', $bin, $args, escapeshellarg($arg)), $output);

	foreach ($output as $line ) {
		if (trim($line) === $ext) {
			return $arg;
		}
	}

	// check if the child will be able to dl() the extension
	$success = shell_exec(sprintf('%s %s -r "echo (int)dl(%s);', $bin, $args, var_export(ext_lib_name($ext), true)));
	if ($success) {
		return null;
	}

	echo "Unable to load extension '{$ext}' in child process";
	exit(1);
}

function ext_lib_name($ext) {
	if (PHP_SHLIB_SUFFIX === 'dll') {
		return "php_{$ext}.dll";
	}

	return $ext . "." . PHP_SHLIB_SUFFIX;
}

function serve($cb) {
	/* stream_socket_server() automatically sets SO_REUSEADDR, 
	 * which is, well, bad if the tests are run in parallel
	 */
	$offset = rand(0,2000);
	foreach (range(8000+$offset, 9000+$offset) as $port) {
		logger("serve: Trying port %d", $port);
		if (($server = @stream_socket_server("tcp://localhost:$port"))) {
			fprintf(STDERR, "%s\n", $port);
			logger("serve: Using port %d", $port);
			do {
				$R = array($server); $W = array(); $E = array();
				$select = stream_select($R, $E, $E, 10, 0);
				if ($select && ($client = stream_socket_accept($server, 1))) {
					logger("serve: Accept client %d", (int) $client);
					if (getenv("PHP_HTTP_TEST_SSL")) {
						stream_socket_enable_crypto($client, true, STREAM_CRYPTO_METHOD_SSLv23_SERVER);
					}
					try {
						$R = array($client);
						while (!feof($client) && stream_select($R, $W, $E, 1, 0)) {
							logger("serve: Handle client %d", (int) $client);
							$cb($client);
						}
						logger("serve: EOF/timeout on client %d", (int) $client);
					} catch (Exception $ex) {
						logger("serve: Exception on client %d: %s", (int) $client, $ex->getMessage());
						/* ignore disconnect */
						if ($ex->getMessage() !== "Empty message received from stream") {
							fprintf(STDERR, "%s\n", $ex);
						}
						break;
					}
				}
			} while ($select);
			return;
		}
	}
}

function server($handler, $cb) {
	$args = [];
	$argList = preg_split('#\s+#', getenv('TEST_PHP_ARGS'), -1, PREG_SPLIT_NO_EMPTY);
	for ($i = 0; isset($argList[$i]); $i++) {
		if ($argList[$i] === '-c') {
			array_push($args, '-c', $argList[++$i]);
			continue;
		}
		if ($argList[$i] === '-n') {
			$args[] = '-n';
			continue;
		}
		if ($argList[$i] === '-d') {
			$args[] = '-d' . $args[++$i];
			continue;
		}
		if (substr($argList[$i], 0, 2) === '-d') {
			$args[] = $argList[$i];
		}
	}
	foreach (['raphf', 'propro', 'http'] as $ext) {
		if (null !== $arg = get_extension_load_arg(PHP_BIN, $args, $ext)) {
			$args[] = $arg;
		}
	}
	$args[] = __DIR__ . '/' . $handler;
	proc(PHP_BIN, $args, $cb);
}

function nghttpd($cb) {
	$spec = array(array("pipe","r"), array("pipe","w"), array("pipe","w"));
	$offset = rand(0,2000);
	foreach (range(8000+$offset, 9000+$offset) as $port) {
		$comm = "exec nghttpd -d html $port http2.key http2.crt";
		if (($proc = proc_open($comm, $spec, $pipes, __DIR__))) {
			$stdin = $pipes[0];
			$stdout = $pipes[1];
			$stderr = $pipes[2];
			
			sleep(1);
			$status = proc_get_status($proc);
			logger("nghttpd: %s", new http\Params($status));
			if (!$status["running"]) {
				continue;
			}
			
			try {
				$cb($port, $stdin, $stdout, $stderr);
			} catch (Exception $e) {
				echo $e,"\n";
			}
		
			proc_terminate($proc);
		
			fpassthru($stderr);
			fpassthru($stdout);
			return;
		}
	}
			
}

function proc($bin, $args, $cb) {
	$spec = array(array("pipe","r"), array("pipe","w"), array("pipe","w"));
	$comm = escapeshellcmd($bin) . " ". implode(" ", array_map("escapeshellarg", $args));
	logger("proc: %s %s", $bin, implode(" ", $args));
	if (($proc = proc_open($comm, $spec, $pipes, __DIR__))) {
		$stdin = $pipes[0];
		$stdout = $pipes[1];
		$stderr = $pipes[2];

		do {
			$port = trim(fgets($stderr));
			$R = array($stderr); $W = array(); $E = array();
		} while (is_numeric($port) && stream_select($R, $W, $E, 0, 10000));
	
		if (is_numeric($port)) {
			try {
				$cb($port, $stdin, $stdout, $stderr);
			} catch (Exception $e) {
				echo $e,"\n";
			}
		}
	
		proc_terminate($proc);
	
		fpassthru($stderr);
		fpassthru($stdout);
	}
}