diff core/lib/Drupal/Core/Session/SessionConfiguration.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Session/SessionConfiguration.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,153 @@
+<?php
+
+namespace Drupal\Core\Session;
+
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Defines the default session configuration generator.
+ */
+class SessionConfiguration implements SessionConfigurationInterface {
+
+  /**
+   * An associative array of session ini settings.
+   */
+  protected $options;
+
+  /**
+   * Constructs a new session configuration instance.
+   *
+   * @param array $options
+   *   An associative array of session ini settings.
+   *
+   * @see \Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage::__construct()
+   * @see http://php.net/manual/session.configuration.php
+   */
+  public function __construct($options = []) {
+    $this->options = $options;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function hasSession(Request $request) {
+    return $request->cookies->has($this->getName($request));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getOptions(Request $request) {
+    $options = $this->options;
+
+    // Generate / validate the cookie domain.
+    $options['cookie_domain'] = $this->getCookieDomain($request) ?: '';
+
+    // If the site is accessed via SSL, ensure that the session cookie is
+    // issued with the secure flag.
+    $options['cookie_secure'] = $request->isSecure();
+
+    // Set the session cookie name.
+    $options['name'] = $this->getName($request);
+
+    return $options;
+  }
+
+  /**
+   * Returns the session cookie name.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The request.
+   *
+   * @return string
+   *   The name of the session cookie.
+   */
+  protected function getName(Request $request) {
+    // To prevent session cookies from being hijacked, a user can configure the
+    // SSL version of their website to only transfer session cookies via SSL by
+    // using PHP's session.cookie_secure setting. The browser will then use two
+    // separate session cookies for the HTTPS and HTTP versions of the site. So
+    // we must use different session identifiers for HTTPS and HTTP to prevent a
+    // cookie collision.
+    $prefix = $request->isSecure() ? 'SSESS' : 'SESS';
+    return $prefix . $this->getUnprefixedName($request);
+  }
+
+  /**
+   * Returns the session cookie name without the secure/insecure prefix.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The request.
+   *
+   * @returns string
+   *   The session name without the prefix (SESS/SSESS).
+   */
+  protected function getUnprefixedName(Request $request) {
+    if ($test_prefix = $this->drupalValidTestUa()) {
+      $session_name = $test_prefix;
+    }
+    elseif (isset($this->options['cookie_domain'])) {
+      // If the user specifies the cookie domain, also use it for session name.
+      $session_name = $this->options['cookie_domain'];
+    }
+    else {
+      // Otherwise use $base_url as session name, without the protocol
+      // to use the same session identifiers across HTTP and HTTPS.
+      $session_name = $request->getHost() . $request->getBasePath();
+      // Replace "core" out of session_name so core scripts redirect properly,
+      // specifically install.php.
+      $session_name = preg_replace('#/core$#', '', $session_name);
+    }
+
+    return substr(hash('sha256', $session_name), 0, 32);
+  }
+
+  /**
+   * Return the session cookie domain.
+   *
+   * The Set-Cookie response header and its domain attribute are defined in RFC
+   * 2109, RFC 2965 and RFC 6265 each one superseeding the previous version.
+   *
+   * @see http://tools.ietf.org/html/rfc2109
+   * @see http://tools.ietf.org/html/rfc2965
+   * @see http://tools.ietf.org/html/rfc6265
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The request.
+   *
+   * @returns string
+   *   The session cookie domain.
+   */
+  protected function getCookieDomain(Request $request) {
+    if (isset($this->options['cookie_domain'])) {
+      $cookie_domain = $this->options['cookie_domain'];
+    }
+    else {
+      $host = $request->getHost();
+      // To maximize compatibility and normalize the behavior across user
+      // agents, the cookie domain should start with a dot.
+      $cookie_domain = '.' . $host;
+    }
+
+    // Cookies for domains without an embedded dot will be rejected by user
+    // agents in order to defeat malicious websites attempting to set cookies
+    // for top-level domains. Also IP addresses may not be used in the domain
+    // attribute of a Set-Cookie header.
+    if (count(explode('.', $cookie_domain)) > 2 && !is_numeric(str_replace('.', '', $cookie_domain))) {
+      return $cookie_domain;
+    }
+  }
+
+  /**
+   * Wraps drupal_valid_test_ua().
+   *
+   * @return string|false
+   *   Either the simpletest prefix (the string "simpletest" followed by any
+   *   number of digits) or FALSE if the user agent does not contain a valid
+   *   HMAC and timestamp.
+   */
+  protected function drupalValidTestUa() {
+    return drupal_valid_test_ua();
+  }
+
+}