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
|
/*
* TLS Heartbeats
* (C) 2012 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/internal/tls_heartbeats.h>
#include <botan/internal/tls_extensions.h>
#include <botan/internal/tls_reader.h>
#include <botan/tls_exceptn.h>
namespace Botan {
namespace TLS {
Heartbeat_Message::Heartbeat_Message(const MemoryRegion<byte>& buf)
{
TLS_Data_Reader reader(buf);
const byte type = reader.get_byte();
if(type != 1 && type != 2)
throw TLS_Exception(Alert::ILLEGAL_PARAMETER,
"Unknown heartbeat message type");
m_type = static_cast<Type>(type);
m_payload = reader.get_range<byte>(2, 0, 16*1024);
// padding follows and is ignored
}
Heartbeat_Message::Heartbeat_Message(Type type,
const byte payload[],
size_t payload_len) :
m_type(type),
m_payload(payload, payload_len)
{
}
MemoryVector<byte> Heartbeat_Message::contents() const
{
MemoryVector<byte> send_buf(3 + m_payload.size() + 16);
send_buf[0] = m_type;
send_buf[1] = get_byte<u16bit>(0, m_payload.size());
send_buf[2] = get_byte<u16bit>(1, m_payload.size());
copy_mem(&send_buf[3], &m_payload[0], m_payload.size());
// leave padding as all zeros
return send_buf;
}
MemoryVector<byte> Heartbeat_Support_Indicator::serialize() const
{
MemoryVector<byte> heartbeat(1);
heartbeat[0] = (m_peer_allowed_to_send ? 1 : 2);
return heartbeat;
}
Heartbeat_Support_Indicator::Heartbeat_Support_Indicator(TLS_Data_Reader& reader,
u16bit extension_size)
{
if(extension_size != 1)
throw Decoding_Error("Strange size for heartbeat extension");
const byte code = reader.get_byte();
if(code != 1 && code != 2)
throw TLS_Exception(Alert::ILLEGAL_PARAMETER,
"Unknown heartbeat code " + to_string(code));
m_peer_allowed_to_send = (code == 1);
}
}
}
|
