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dispatch.php
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440 lines (323 loc) · 9.51 KB
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<?php
if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50300) {
error(500, 'dispatch requires at least PHP 5.3 to run.');
}
function error($code, $message) {
@header("HTTP/1.0 {$code} {$message}", true, $code);
die($message);
}
function config($key, $value = null) {
static $_config = array();
if ($key === 'source' && file_exists($value))
$_config = parse_ini_file($value, true);
else if ($value == null)
return (isset($_config[$key]) ? $_config[$key] : null);
else
$_config[$key] = $value;
}
function to_b64($str) {
$str = base64_encode($str);
$str = preg_replace('/\//', '_', $str);
$str = preg_replace('/\+/', '.', $str);
$str = preg_replace('/\=/', '-', $str);
return trim($str, '-');
}
function from_b64($str) {
$str = preg_replace('/\_/', '/', $str);
$str = preg_replace('/\./', '+', $str);
$str = preg_replace('/\-/', '=', $str);
$str = base64_decode($str);
return $str;
}
if (extension_loaded('mcrypt')) {
function encrypt($decoded) {
if (($secret = config('cookies.secret')) == null)
error(500, '[cookies.secret] is not set');
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
$iv_code = mcrypt_create_iv($iv_size, MCRYPT_RAND);
return to_b64(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $secret, $decoded, MCRYPT_MODE_ECB, $iv_code));
}
function decrypt($encoded) {
if (($secret = config('cookies.secret')) == null)
error(500, '[cookies.secret] is not set');
$enc_str = from_b64($encoded);
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
$iv_code = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$enc_str = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $secret, $enc_str, MCRYPT_MODE_ECB, $iv_code);
return rtrim($enc_str, "\0");
}
}
function set_cookie($name, $value, $expire = 31536000, $path = '/') {
$value = (function_exists('encrypt') ? encrypt($value) : $value);
setcookie($name, $value, time() + $expire, $path);
}
function get_cookie($name) {
$value = from($_COOKIE, $name);
if ($value)
$value = (function_exists('decrypt') ? decrypt($value) : $value);
return $value;
}
function delete_cookie() {
$cookies = func_get_args();
foreach ($cookies as $ck)
setcookie($ck, '', -10, '/');
}
function warn($name = null, $message = null) {
static $warnings = array();
if ($name == '*')
return $warnings;
if (!$name)
return count(array_keys($warnings));
if (!$message)
return isset($warnings[$name]) ? $warnings[$name] : null ;
$warnings[$name] = $message;
}
function _u($str) {
return urlencode($str);
}
function _h($str, $enc = 'UTF-8', $flags = ENT_QUOTES) {
return htmlentities($str, $flags, $enc);
}
function from($source, $name) {
if (is_array($name)) {
$data = array();
foreach ($name as $k)
$data[$k] = isset($source[$k]) ? $source[$k] : null ;
return $data;
}
return isset($source[$name]) ? $source[$name] : null ;
}
function stash($name, $value = null) {
static $_stash = array();
if ($value === null)
return isset($_stash[$name]) ? $_stash[$name] : null;
$_stash[$name] = $value;
return $value;
}
function method($verb = null) {
if ($verb == null || (strtoupper($verb) == strtoupper($_SERVER['REQUEST_METHOD'])))
return strtoupper($_SERVER['REQUEST_METHOD']);
error(400, 'bad request');
}
function client_ip() {
if (isset($_SERVER['HTTP_CLIENT_IP']))
return $_SERVER['HTTP_CLIENT_IP'];
else if (isset($_SERVER['HTTP_X_FORWARDED_FOR']))
return $_SERVER['HTTP_X_FORWARDED_FOR'];
return $_SERVER['REMOTE_ADDR'];
}
function redirect(/* $code_or_path, $path_or_cond, $cond */) {
$argv = func_get_args();
$argc = count($argv);
$path = null;
$code = 302;
$cond = true;
switch ($argc) {
case 3:
list($code, $path, $cond) = $argv;
break;
case 2:
if (is_string($argv[0]) ? $argv[0] : $argv[1]) {
$code = 302;
$path = $argv[0];
$cond = $argv[1];
} else {
$code = $argv[0];
$path = $argv[1];
}
break;
case 1:
if (!is_string($argv[0]))
error(500, 'bad call to redirect()');
$path = $argv[0];
break;
default:
error(500, 'bad call to redirect()');
}
$cond = (is_callable($cond) ? !!call_user_func($cond) : !!$cond);
if (!$cond)
return;
header('Location: '.$path, true, $code);
exit;
}
function partial($view, $locals = null) {
if (is_array($locals) && count($locals)) {
extract($locals, EXTR_SKIP);
}
if (($view_root = config('views.root')) == null)
error(500, "[views.root] is not set");
$path = basename($view);
$view = preg_replace('/'.$path.'$/', "_{$path}", $view);
$view = "{$view_root}/{$view}.html.php";
if (file_exists($view)) {
ob_start();
require $view;
return ob_get_clean();
} else {
error(500, "partial [{$view}] not found");
}
return '';
}
function content($value = null) {
return stash('$content$', $value);
}
function render($view, $locals = null, $layout = null) {
if (is_array($locals) && count($locals)) {
extract($locals, EXTR_SKIP);
}
if (($view_root = config('views.root')) == null)
error(500, "[views.root] is not set");
ob_start();
include "{$view_root}/{$view}.html.php";
content(trim(ob_get_clean()));
if ($layout !== false) {
if ($layout == null) {
$layout = config('views.layout');
$layout = ($layout == null) ? 'layout' : $layout;
}
$layout = "{$view_root}/{$layout}.html.php";
header('Content-type: text/html; charset=utf-8');
ob_start();
require $layout;
echo trim(ob_get_clean());
} else {
echo content();
}
}
function json($obj, $code = 200) {
header('Content-type: application/json', true, $code);
echo json_encode($obj);
exit;
}
function condition() {
static $cb_map = array();
$argv = func_get_args();
$argc = count($argv);
if (!$argc)
error(500, 'bad call to condition()');
$name = array_shift($argv);
$argc = $argc - 1;
if (!$argc && is_callable($cb_map[$name]))
return call_user_func($cb_map[$name]);
if (is_callable($argv[0]))
return ($cb_map[$name] = $argv[0]);
if (is_callable($cb_map[$name]))
return call_user_func_array($cb_map[$name], $argv);
error(500, 'condition ['.$name.'] is undefined');
}
function middleware($cb_or_path = null) {
static $cb_map = array();
if ($cb_or_path == null || is_string($cb_or_path)) {
foreach ($cb_map as $cb) {
call_user_func($cb, $cb_or_path);
}
} else {
array_push($cb_map, $cb_or_path);
}
}
function filter($sym, $cb_or_val = null) {
static $cb_map = array();
if (is_callable($cb_or_val)) {
$cb_map[$sym] = $cb_or_val;
return;
}
if (is_array($sym) && count($sym) > 0) {
foreach ($sym as $s) {
$s = substr($s, 1);
if (isset($cb_map[$s]) && isset($cb_or_val[$s]))
call_user_func($cb_map[$s], $cb_or_val[$s]);
}
return;
}
error(500, 'bad call to filter()');
}
function route_to_regex($route) {
$route = preg_replace_callback('@:[\w]+@i', function ($matches) {
$token = str_replace(':', '', $matches[0]);
return '(?P<'.$token.'>[a-z0-9_\0-\.]+)';
}, $route);
return '@^'.rtrim($route, '/').'$@i';
}
function route($method, $pattern, $callback = null) {
// callback map by request type
static $route_map = array(
'GET' => array(),
'POST' => array()
);
$method = strtoupper($method);
if (!in_array($method, array('GET', 'POST')))
error(500, 'Only GET and POST are supported');
// a callback was passed, so we create a route defiition
if ($callback !== null) {
// create a route entry for this pattern
$route_map[$method][$pattern] = array(
'xp' => route_to_regex($pattern),
'cb' => $callback
);
} else {
// callback is null, so this is a route invokation. look up the callback.
foreach ($route_map[$method] as $pat => $obj) {
// if the requested uri ($pat) has a matching route, let's invoke the cb
if (!preg_match($obj['xp'], $pattern, $vals))
continue;
// call middleware
middleware($pattern);
// construct the params for the callback
array_shift($vals);
preg_match_all('@:([\w]+)@', $pat, $keys, PREG_PATTERN_ORDER);
$keys = array_shift($keys);
$argv = array();
foreach ($keys as $index => $id) {
$id = substr($id, 1);
if (isset($vals[$id])) {
array_push($argv, $vals[$id]);
}
}
// call filters if we have symbols
if (count($keys)) {
filter(array_values($keys), $vals);
}
// if cb found, invoke it
if (is_callable($obj['cb'])) {
call_user_func_array($obj['cb'], $argv);
}
// leave after first match
break;
}
}
}
function get($path, $cb) {
route('GET', $path, $cb);
}
function post($path, $cb) {
route('POST', $path, $cb);
}
function flash($key, $msg = null, $now = false) {
static $x = array(),
$f = null;
$f = (config('cookies.flash') ? config('cookies.flash') : '_F');
if ($c = get_cookie($f))
$c = json_decode($c, true);
else
$c = array();
if ($msg == null) {
if (isset($c[$key])) {
$x[$key] = $c[$key];
unset($c[$key]);
set_cookie($f, json_encode($c));
}
return (isset($x[$key]) ? $x[$key] : null);
}
if (!$now) {
$c[$key] = $msg;
set_cookie($f, json_encode($c));
}
$x[$key] = $msg;
}
function dispatch() {
$parts = preg_split('/\?/', $_SERVER['REQUEST_URI'], -1, PREG_SPLIT_NO_EMPTY);
$uri = trim($parts[0], '/');
$uri = strlen($uri) ? $uri : 'index';
route(method(), "/{$uri}");
}
?>