1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_PROXY_PORTAL_PROXY_H_
#define MOJO_PROXY_PORTAL_PROXY_H_
#include <cstdint>
#include "base/memory/raw_ref.h"
#include "mojo/core/scoped_ipcz_handle.h"
#include "mojo/public/c/system/trap.h"
#include "mojo/public/c/system/types.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "mojo/public/cpp/system/trap.h"
#include "third_party/ipcz/include/ipcz/ipcz.h"
namespace mojo_proxy {
class NodeProxy;
// Maintains a proxy between a single ipcz portal and a corresponding legacy
// Mojo message pipe. Self-destructs when either end is disconnected.
class PortalProxy {
public:
PortalProxy(const raw_ref<const IpczAPI> ipcz,
NodeProxy& node_proxy,
mojo::core::ScopedIpczHandle portal,
mojo::ScopedMessagePipeHandle pipe);
~PortalProxy();
// Starts proxying. Until either the portal or the pipe is disconnected from
// its peer, this will watch both objects for incoming messages and forward
// them to the other.
void Start();
private:
uintptr_t trap_context() const { return reinterpret_cast<uintptr_t>(this); }
void Flush();
void FlushAndWatchPortal();
void FlushAndWatchPipe();
mojo::core::ScopedIpczHandle TranslateMojoToIpczHandle(
mojo::ScopedHandle handle);
mojo::ScopedHandle TranslateIpczToMojoHandle(
mojo::core::ScopedIpczHandle handle);
static void OnIpczPortalActivity(const IpczTrapEvent* event) {
reinterpret_cast<PortalProxy*>(event->context)
->HandlePortalActivity(event->condition_flags);
}
static void OnMojoPipeActivity(const MojoTrapEvent* event) {
reinterpret_cast<PortalProxy*>(event->trigger_context)
->HandlePipeActivity(event->result);
}
void HandlePortalActivity(IpczTrapConditionFlags flags);
void HandlePipeActivity(MojoResult result);
void Die();
bool in_flush_ = false;
bool disconnected_ = false;
bool watching_portal_ = false;
bool watching_pipe_ = false;
const raw_ref<const IpczAPI> ipcz_;
raw_ref<NodeProxy> node_proxy_;
const mojo::core::ScopedIpczHandle portal_;
const mojo::ScopedMessagePipeHandle pipe_;
mojo::ScopedTrapHandle pipe_trap_;
};
} // namespace mojo_proxy
#endif // MOJO_PROXY_PORTAL_PROXY_H_
|
