gecko-dev/dom/ipc/AppProcessChecker.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_AppProcessChecker_h
#define mozilla_AppProcessChecker_h

namespace mozilla {

namespace dom {
class PBrowserParent;
class PContentParent;
}

namespace hal_sandbox {
class PHalParent;
}

enum AssertAppProcessType {
  ASSERT_APP_PROCESS_PERMISSION,
  ASSERT_APP_PROCESS_MANIFEST_URL,
  ASSERT_APP_HAS_PERMISSION
};

/**
 * Return true iff the specified browser has the specified capability.
 * If this returns false, the browser didn't have the capability and
 * will be killed.
 */
bool
AssertAppProcess(mozilla::dom::PBrowserParent* aActor,
                 AssertAppProcessType aType,
                 const char* aCapability);

/**
 * Return true iff any of the PBrowsers loaded in this content process
 * has the specified capability.  If this returns false, the process
 * didn't have the capability and will be killed.
 */
bool
AssertAppProcess(mozilla::dom::PContentParent* aActor,
                 AssertAppProcessType aType,
                 const char* aCapability);

bool
AssertAppProcess(mozilla::hal_sandbox::PHalParent* aActor,
                 AssertAppProcessType aType,
                 const char* aCapability);

// NB: when adding capability checks for other IPDL actors, please add
// them to this file and have them delegate to the two functions above
// as appropriate.  For example,
//
//   bool AppProcessHasCapability(PNeckoParent* aActor, AssertAppProcessType aType) {
//     return AssertAppProcess(aActor->Manager(), aType);
//   }

/**
 * Inline function for asserting the process's permission.
 */
template<typename T>
inline bool
AssertAppProcessPermission(T* aActor,
                           const char* aPermission) {
  return AssertAppProcess(aActor,
                          ASSERT_APP_PROCESS_PERMISSION,
                          aPermission);
}

/**
 * Inline function for asserting the process's manifest URL.
 */
template<typename T>
inline bool
AssertAppProcessManifestURL(T* aActor,
                            const char* aManifestURL) {
  return AssertAppProcess(aActor,
                          ASSERT_APP_PROCESS_MANIFEST_URL,
                          aManifestURL);
}

/**
 * Inline function for asserting the process's manifest URL.
 */
template<typename T>
inline bool
AssertAppHasPermission(T* aActor,
                       const char* aPermission) {
  return AssertAppProcess(aActor,
                          ASSERT_APP_HAS_PERMISSION,
                          aPermission);
}

} // namespace mozilla

#endif // mozilla_AppProcessChecker_h