PHP Classes
elePHPant
Icontem

File: src/security.php

Recommend this page to a friend!
  Classes of Scott Arciszewski  >  CMS Airship  >  src/security.php  >  Download  
File: src/security.php
Role: Example script
Content type: text/plain
Description: Example script
Class: CMS Airship
Content management system with security features
Author: By
Last change: Change `use \Foo` to `use Foo`. The backslash here
is unnecessary.
Date: 1 year ago
Size: 2,590 bytes
 

Contents

Class file image Download
<?php
declare(strict_types=1);

use
Airship\Engine\{
   
AutoPilot,
   
State
};
use
ParagonIE\CSPBuilder\CSPBuilder;
use
ParagonIE\HPKPBuilder\HPKPBuilder;

/**
 * Security enhancements (i.e. CSP, HPKP) are defined here.
 *
 * @global State $state
 */

/**
 * First, Content-Security-Policy headers:
 */
$cspCacheFile = ROOT . '/tmp/cache/csp.' . AutoPilot::$active_cabin . '.json';
if (\
file_exists($cspCacheFile) && \filesize($cspCacheFile) > 0) {
   
$csp = CSPBuilder::fromFile($cspCacheFile);
} else {
   
$cspfile = ROOT . '/config/Cabin/' . AutoPilot::$active_cabin . '/content_security_policy.json';
    if (\
file_exists($cspfile)) {
       
$cabinPolicy = \Airship\loadJSON($cspfile);

       
// Merge the cabin-specific policy with the base policy
       
if (!empty($cabinPolicy['inherit'])) {
           
$basePolicy = \Airship\loadJSON(
               
ROOT . '/config/content_security_policy.json'
           
);
           
$cabinPolicy = \Airship\csp_merge(
               
$cabinPolicy,
               
$basePolicy
           
);
        }
        \
Airship\saveJSON(
           
$cspCacheFile,
           
$cabinPolicy
       
);
       
$csp = CSPBuilder::fromFile($cspCacheFile);
    } else {
       
// No cabin policy, use the default
       
$csp = CSPBuilder::fromFile(ROOT . '/config/content_security_policy.json');
    }
}
$state->CSP = $csp;

/**
 * Next, if we're connected over HTTPS, send an HPKP header too:
 */
if (AutoPilot::isHTTPSConnection()) {
   
$hpkpCacheFile = ROOT . '/tmp/cache/hpkp.' . AutoPilot::$active_cabin . '.json';
    if (\
file_exists($hpkpCacheFile) && \filesize($hpkpCacheFile) > 0) {
       
$hpkp = HPKPBuilder::fromFile($hpkpCacheFile);
       
$state->HPKP = $hpkp;
    } else {
       
$hpkpConfig = $state->cabins[AutoPilot::$cabinIndex]['hpkp'];
               
        if (
$hpkpConfig['enabled'] && \count($hpkpConfig['hashes']) > 1) {
           
$hpkp = (new HPKPBuilder())
                ->
includeSubdomains($hpkpConfig['include-subdomains'])
                ->
maxAge($hpkpConfig['max-age'])
                ->
reportOnly($hpkpConfig['report-only'])
                ->
reportUri($hpkpConfig['report-uri']);
            foreach (
$hpkpConfig['hashes'] as $h) {
               
$hpkp->addHash(
                   
$h['hash'],
                    (string) (
$h['algo'] ?? 'sha256')
                );
            }
            \
file_put_contents(
               
$hpkpCacheFile,
               
$hpkp->getJSON()
            );
           
$state->HPKP = $hpkp;
        } else {
           
$state->HPKP = null;
        }
    }
}