third_party/WebKit/Source/core/dom/SecurityContext.cpp

/*
 * Copyright (C) 2011 Google Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY GOOGLE, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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#include "core/dom/SecurityContext.h"

#include "core/frame/csp/ContentSecurityPolicy.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/weborigin/SecurityOrigin.h"

namespace blink {

SecurityContext::SecurityContext()
    : m_sandboxFlags(SandboxNone),
      m_addressSpace(WebAddressSpacePublic),
      m_insecureRequestPolicy(kLeaveInsecureRequestsAlone) {}

SecurityContext::~SecurityContext() {}

DEFINE_TRACE(SecurityContext) {
  visitor->trace(m_contentSecurityPolicy);
}

void SecurityContext::setSecurityOrigin(
    PassRefPtr<SecurityOrigin> securityOrigin) {
  m_securityOrigin = securityOrigin;
}

void SecurityContext::setContentSecurityPolicy(
    ContentSecurityPolicy* contentSecurityPolicy) {
  m_contentSecurityPolicy = contentSecurityPolicy;
}

void SecurityContext::enforceSandboxFlags(SandboxFlags mask) {
  applySandboxFlags(mask);
}

void SecurityContext::applySandboxFlags(SandboxFlags mask) {
  m_sandboxFlags |= mask;

  if (isSandboxed(SandboxOrigin) && getSecurityOrigin() &&
      !getSecurityOrigin()->isUnique()) {
    setSecurityOrigin(SecurityOrigin::createUnique());
    didUpdateSecurityOrigin();
  }
}

String SecurityContext::addressSpaceForBindings() const {
  switch (m_addressSpace) {
    case WebAddressSpacePublic:
      return "public";

    case WebAddressSpacePrivate:
      return "private";

    case WebAddressSpaceLocal:
      return "local";
  }
  NOTREACHED();
  return "public";
}

// Enforces the given suborigin as part of the security origin for this
// security context. |name| must not be empty, although it may be null. A null
// name represents a lack of a suborigin.
// See: https://w3c.github.io/webappsec-suborigins/index.html
void SecurityContext::enforceSuborigin(const Suborigin& suborigin) {
  if (!RuntimeEnabledFeatures::suboriginsEnabled())
    return;

  DCHECK(!suborigin.name().isEmpty());
  DCHECK(RuntimeEnabledFeatures::suboriginsEnabled());
  DCHECK(m_securityOrigin.get());
  DCHECK(!m_securityOrigin->hasSuborigin() ||
         m_securityOrigin->suborigin()->name() == suborigin.name());
  m_securityOrigin->addSuborigin(suborigin);
  didUpdateSecurityOrigin();
}

}  // namespace blink