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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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 <AK/HashMap.h>
#include <AK/SinglyLinkedListWithCount.h>
#include <Kernel/DoubleBuffer.h>
#include <Kernel/KBuffer.h>
#include <Kernel/Lock.h>
#include <Kernel/Net/IPv4.h>
#include <Kernel/Net/IPv4SocketTuple.h>
#include <Kernel/Net/Socket.h>
namespace Kernel {
class NetworkAdapter;
class TCPPacket;
class TCPSocket;
class IPv4Socket : public Socket {
public:
static KResultOr<NonnullRefPtr<Socket>> create(int type, int protocol);
virtual ~IPv4Socket() override;
static Lockable<HashTable<IPv4Socket*>>& all_sockets();
virtual KResult close() override;
virtual KResult bind(Userspace<const sockaddr*>, socklen_t) override;
virtual KResult connect(FileDescription&, const sockaddr*, socklen_t, ShouldBlock = ShouldBlock::Yes) override;
virtual KResult listen(size_t) override;
virtual void get_local_address(sockaddr*, socklen_t*) override;
virtual void get_peer_address(sockaddr*, socklen_t*) override;
virtual void attach(FileDescription&) override;
virtual void detach(FileDescription&) override;
virtual bool can_read(const FileDescription&, size_t) const override;
virtual bool can_write(const FileDescription&, size_t) const override;
virtual KResultOr<size_t> sendto(FileDescription&, const void*, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
virtual KResultOr<size_t> recvfrom(FileDescription&, void*, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>) override;
virtual KResult setsockopt(int level, int option, Userspace<const void*>, socklen_t) override;
virtual KResult getsockopt(FileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>) override;
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
bool did_receive(const IPv4Address& peer_address, u16 peer_port, KBuffer&&);
const IPv4Address& local_address() const { return m_local_address; }
u16 local_port() const { return m_local_port; }
void set_local_port(u16 port) { m_local_port = port; }
bool has_specific_local_address() { return m_local_address.to_u32() != 0; }
const IPv4Address& peer_address() const { return m_peer_address; }
u16 peer_port() const { return m_peer_port; }
void set_peer_port(u16 port) { m_peer_port = port; }
IPv4SocketTuple tuple() const { return IPv4SocketTuple(m_local_address, m_local_port, m_peer_address, m_peer_port); }
String absolute_path(const FileDescription& description) const override;
u8 ttl() const { return m_ttl; }
enum class BufferMode {
Packets,
Bytes,
};
BufferMode buffer_mode() const { return m_buffer_mode; }
protected:
IPv4Socket(int type, int protocol);
virtual const char* class_name() const override { return "IPv4Socket"; }
int allocate_local_port_if_needed();
virtual KResult protocol_bind() { return KSuccess; }
virtual KResult protocol_listen() { return KSuccess; }
virtual KResultOr<size_t> protocol_receive(const KBuffer&, void*, size_t, int) { return -ENOTIMPL; }
virtual KResultOr<size_t> protocol_send(const void*, size_t) { return -ENOTIMPL; }
virtual KResult protocol_connect(FileDescription&, ShouldBlock) { return KSuccess; }
virtual int protocol_allocate_local_port() { return 0; }
virtual bool protocol_is_disconnected() const { return false; }
virtual void shut_down_for_reading() override;
void set_local_address(IPv4Address address) { m_local_address = address; }
void set_peer_address(IPv4Address address) { m_peer_address = address; }
private:
virtual bool is_ipv4() const override { return true; }
KResultOr<size_t> receive_byte_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>);
KResultOr<size_t> receive_packet_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>);
IPv4Address m_local_address;
IPv4Address m_peer_address;
struct ReceivedPacket {
IPv4Address peer_address;
u16 peer_port;
Optional<KBuffer> data;
};
SinglyLinkedListWithCount<ReceivedPacket> m_receive_queue;
DoubleBuffer m_receive_buffer;
u16 m_local_port { 0 };
u16 m_peer_port { 0 };
u32 m_bytes_received { 0 };
u8 m_ttl { 64 };
bool m_can_read { false };
BufferMode m_buffer_mode { BufferMode::Packets };
Optional<KBuffer> m_scratch_buffer;
};
}
|
