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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_APPS_APP_SHIM_MACH_BOOTSTRAP_ACCEPTOR_H_
#define CHROME_BROWSER_APPS_APP_SHIM_MACH_BOOTSTRAP_ACCEPTOR_H_
#include <memory>
#include <string>
#include "base/apple/dispatch_source.h"
#include "base/memory/raw_ptr.h"
#include "base/process/process_handle.h"
#include "mojo/public/cpp/platform/named_platform_channel.h"
#include "mojo/public/cpp/platform/platform_channel_endpoint.h"
#include "mojo/public/cpp/platform/platform_channel_server_endpoint.h"
namespace apps {
// A simple Mach message server published in the system bootstrap namespace.
// When an app shim client sends a message, the server creates a
// mojo::PlatformChannelEndpoint from the Mach port specified in the
// msgh_remote_port (the Mach reply port) and passes it to its Delegate. The
// delegate then uses this to initialize a Mojo IPC channel.
class MachBootstrapAcceptor {
public:
class Delegate {
public:
// Called when a client identified by |audit_token| connects with the
// Mach port it provided in |endpoint|.
virtual void OnClientConnected(mojo::PlatformChannelEndpoint endpoint,
audit_token_t audit_token) = 0;
// Called when there is an error creating the server channel.
virtual void OnServerChannelCreateError() = 0;
};
// Initializes the server by specifying the |name_fragment|, which will be
// appended to the running process's bundle identifier, to be published in
// the bootstrap server.
MachBootstrapAcceptor(const std::string& name_fragment, Delegate* delegate);
MachBootstrapAcceptor(const MachBootstrapAcceptor&) = delete;
MachBootstrapAcceptor& operator=(const MachBootstrapAcceptor&) = delete;
~MachBootstrapAcceptor();
// Creates a Mach receive port and publishes a send right to it in the system
// bootstrap namespace. Clients will then be able to send messages to this
// server.
void Start();
// Stops listening for client messages and un-publishes the server from the
// bootstrap namespace.
void Stop();
private:
friend class MachBootstrapAcceptorTest;
// Called by |dispatch_source_| when a Mach message is ready to be received
// on |endpoint_|.
void HandleRequest();
mach_port_t port();
mojo::NamedPlatformChannel::ServerName server_name_;
raw_ptr<Delegate, AcrossTasksDanglingUntriaged> delegate_;
mojo::PlatformChannelServerEndpoint endpoint_;
std::unique_ptr<base::apple::DispatchSource> dispatch_source_;
};
} // namespace apps
#endif // CHROME_BROWSER_APPS_APP_SHIM_MACH_BOOTSTRAP_ACCEPTOR_H_
|
