/* * Copyright (C) 2021 Apple 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 APPLE 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 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 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include #if HAVE(TASK_IDENTITY_TOKEN) #include #else #include #endif namespace WebCore { // Object to access proof of process identity. // ProcessIdentifier identifies a process. // ProcessIdentity grants access to the identity. // Empty ProcessIdentity does not do anything. class ProcessIdentity { public: // Creates an process identity for current process or empty on error. enum CurrentProcessTag { CurrentProcess }; WEBCORE_EXPORT explicit ProcessIdentity(CurrentProcessTag); // Creates an empty process identity that does not grant any access. ProcessIdentity() = default; // Returns true for a process identity or false on empty identity. WEBCORE_EXPORT operator bool() const; #if HAVE(TASK_IDENTITY_TOKEN) task_id_token_t taskIdToken() const { return m_taskIdToken.sendRight(); } #endif template void encode(Encoder&) const; template static std::optional decode(Decoder&); private: #if HAVE(TASK_IDENTITY_TOKEN) WEBCORE_EXPORT ProcessIdentity(MachSendRight&& taskIdToken); MachSendRight m_taskIdToken; #endif }; template void ProcessIdentity::encode(Encoder& encoder) const { #if HAVE(TASK_IDENTITY_TOKEN) encoder << m_taskIdToken; #else UNUSED_PARAM(encoder); #endif } template std::optional ProcessIdentity::decode(Decoder& decoder) { #if HAVE(TASK_IDENTITY_TOKEN) std::optional identitySendRight; decoder >> identitySendRight; if (identitySendRight) return ProcessIdentity { WTFMove(*identitySendRight) }; return std::nullopt; #else UNUSED_PARAM(decoder); return ProcessIdentity { }; #endif } }