| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ipc/attachment_broker_unprivileged.h" | |
| 6 | |
| 7 #include <memory> | |
| 8 | |
| 9 #include "base/lazy_instance.h" | |
| 10 #include "base/memory/ptr_util.h" | |
| 11 #include "base/metrics/histogram_macros.h" | |
| 12 #include "build/build_config.h" | |
| 13 #include "ipc/ipc_channel.h" | |
| 14 #include "ipc/ipc_endpoint.h" | |
| 15 | |
| 16 #if defined(OS_WIN) | |
| 17 #include "ipc/attachment_broker_unprivileged_win.h" | |
| 18 #endif | |
| 19 | |
| 20 #if defined(OS_MACOSX) && !defined(OS_IOS) | |
| 21 #include "ipc/attachment_broker_unprivileged_mac.h" | |
| 22 #endif | |
| 23 | |
| 24 namespace IPC { | |
| 25 | |
| 26 namespace { | |
| 27 | |
| 28 // On platforms that support attachment brokering, returns a new instance of | |
| 29 // a platform-specific attachment broker. Otherwise returns |nullptr|. | |
| 30 // The caller takes ownership of the newly created instance, and is | |
| 31 // responsible for ensuring that the attachment broker lives longer than | |
| 32 // every IPC::Channel. The new instance automatically registers itself as the | |
| 33 // global attachment broker. | |
| 34 std::unique_ptr<AttachmentBrokerUnprivileged> CreateBroker() { | |
| 35 #if defined(OS_WIN) | |
| 36 return base::WrapUnique(new IPC::AttachmentBrokerUnprivilegedWin); | |
| 37 #elif defined(OS_MACOSX) && !defined(OS_IOS) | |
| 38 return base::WrapUnique(new IPC::AttachmentBrokerUnprivilegedMac); | |
| 39 #else | |
| 40 return nullptr; | |
| 41 #endif | |
| 42 } | |
| 43 | |
| 44 // This class is wrapped in a LazyInstance to ensure that its constructor is | |
| 45 // only called once. The constructor creates an attachment broker and sets it as | |
| 46 // the global broker. | |
| 47 class AttachmentBrokerMakeOnce { | |
| 48 public: | |
| 49 AttachmentBrokerMakeOnce() { | |
| 50 // Single process tests can cause an attachment broker to already exist. | |
| 51 if (AttachmentBroker::GetGlobal()) | |
| 52 return; | |
| 53 attachment_broker_ = CreateBroker(); | |
| 54 } | |
| 55 | |
| 56 private: | |
| 57 std::unique_ptr<IPC::AttachmentBrokerUnprivileged> attachment_broker_; | |
| 58 }; | |
| 59 | |
| 60 base::LazyInstance<AttachmentBrokerMakeOnce>::Leaky | |
| 61 g_attachment_broker_make_once = LAZY_INSTANCE_INITIALIZER; | |
| 62 | |
| 63 } // namespace | |
| 64 | |
| 65 AttachmentBrokerUnprivileged::AttachmentBrokerUnprivileged() | |
| 66 : sender_(nullptr) { | |
| 67 IPC::AttachmentBroker::SetGlobal(this); | |
| 68 } | |
| 69 | |
| 70 AttachmentBrokerUnprivileged::~AttachmentBrokerUnprivileged() { | |
| 71 IPC::AttachmentBroker::SetGlobal(nullptr); | |
| 72 } | |
| 73 | |
| 74 // static | |
| 75 void AttachmentBrokerUnprivileged::CreateBrokerIfNeeded() { | |
| 76 g_attachment_broker_make_once.Get(); | |
| 77 } | |
| 78 | |
| 79 void AttachmentBrokerUnprivileged::RegisterBrokerCommunicationChannel( | |
| 80 Endpoint* endpoint) { | |
| 81 DCHECK(endpoint); | |
| 82 DCHECK(!sender_); | |
| 83 sender_ = endpoint; | |
| 84 endpoint->SetAttachmentBrokerEndpoint(true); | |
| 85 } | |
| 86 | |
| 87 void AttachmentBrokerUnprivileged::DeregisterBrokerCommunicationChannel( | |
| 88 Endpoint* endpoint) { | |
| 89 DCHECK(endpoint); | |
| 90 DCHECK_EQ(endpoint, sender_); | |
| 91 sender_ = nullptr; | |
| 92 } | |
| 93 | |
| 94 bool AttachmentBrokerUnprivileged::IsPrivilegedBroker() { | |
| 95 return false; | |
| 96 } | |
| 97 | |
| 98 void AttachmentBrokerUnprivileged::LogError(UMAError error) { | |
| 99 UMA_HISTOGRAM_ENUMERATION( | |
| 100 "IPC.AttachmentBrokerUnprivileged.BrokerAttachmentError", error, | |
| 101 ERROR_MAX); | |
| 102 } | |
| 103 | |
| 104 } // namespace IPC | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2473993003:
Delete IPC::ChannelPosix, IPC::ChannelWin and IPC::AttachmentBroker. (Closed)
