PicoFarad framework for routing

inc/3rdparty/PicoFarad/Response.php

@@ -0,0 +1,156 @@
+<?php
+
+namespace PicoFarad\Response;
+
+
+function force_download($filename)
+{
+    header('Content-Disposition: attachment; filename="'.$filename.'"');
+}
+
+
+function content_type($mimetype)
+{
+    header('Content-Type: '.$mimetype);
+}
+
+
+function status($status_code)
+{
+    $sapi_name = php_sapi_name();
+
+    if (strpos($sapi_name, 'apache') !== false || $sapi_name === 'cli-server') {
+        header('HTTP/1.0 '.$status_code);
+    }
+    else {
+        header('Status: '.$status_code);
+    }
+}
+
+
+function redirect($url)
+{
+    header('Location: '.$url);
+    exit;
+}
+
+
+function json(array $data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Type: application/json');
+    echo json_encode($data);
+
+    exit;
+}
+
+
+function text($data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Type: text/plain; charset=utf-8');
+    echo $data;
+
+    exit;
+}
+
+
+function html($data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Type: text/html; charset=utf-8');
+    echo $data;
+
+    exit;
+}
+
+
+function xml($data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Type: text/xml; charset=utf-8');
+    echo $data;
+
+    exit;
+}
+
+
+function js($data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Type: text/javascript; charset=utf-8');
+    echo $data;
+
+    exit;
+}
+
+
+function binary($data, $status_code = 200)
+{
+    status($status_code);
+
+    header('Content-Transfer-Encoding: binary');
+    header('Content-Type: application/octet-stream');
+    echo $data;
+
+    exit;
+}
+
+
+function csp(array $policies = array())
+{
+    $policies['default-src'] = "'self'";
+    $values = '';
+
+    foreach ($policies as $policy => $hosts) {
+
+        if (is_array($hosts)) {
+
+            $acl = '';
+
+            foreach ($hosts as &$host) {
+
+                if ($host === '*' || $host === 'self' || strpos($host, 'http') === 0) {
+                    $acl .= $host.' ';
+                }
+            }
+        }
+        else {
+
+            $acl = $hosts;
+        }
+
+        $values .= $policy.' '.trim($acl).'; ';
+    }
+
+    header('Content-Security-Policy: '.$values);
+}
+
+
+function nosniff()
+{
+    header('X-Content-Type-Options: nosniff');
+}
+
+
+function xss()
+{
+    header('X-XSS-Protection: 1; mode=block');
+}
+
+
+function hsts()
+{
+    header('Strict-Transport-Security: max-age=31536000');
+}
+
+
+function xframe($mode = 'DENY', array $urls = array())
+{
+    header('X-Frame-Options: '.$mode.' '.implode(' ', $urls));
+}