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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
#include <botan/botan.h>
#include <botan/tls_server.h>
#include <botan/hex.h>
#include <botan/rsa.h>
#include <botan/dsa.h>
#include <botan/x509self.h>
#include <botan/secqueue.h>
#include "socket.h"
#include "credentials.h"
using namespace Botan;
using namespace std::tr1::placeholders;
#include <stdio.h>
#include <string>
#include <iostream>
#include <memory>
bool handshake_complete(const TLS::Session& session)
{
printf("Handshake complete, protocol=%04X ciphersuite=%s compression=%d\n",
session.version(), session.ciphersuite().to_string().c_str(),
session.compression_method());
printf("Session id = %s\n", hex_encode(session.session_id()).c_str());
printf("Master secret = %s\n", hex_encode(session.master_secret()).c_str());
return true;
}
class Blocking_TLS_Server
{
public:
Blocking_TLS_Server(std::tr1::function<void (const byte[], size_t)> output_fn,
std::tr1::function<size_t (byte[], size_t)> input_fn,
std::vector<std::string>& protocols,
TLS::Session_Manager& sessions,
Credentials_Manager& creds,
TLS::Policy& policy,
RandomNumberGenerator& rng) :
input_fn(input_fn),
server(
output_fn,
std::tr1::bind(&Blocking_TLS_Server::reader_fn, std::tr1::ref(*this), _1, _2, _3),
handshake_complete,
sessions,
creds,
policy,
rng),
exit(false)
{
read_loop();
}
size_t read(byte buf[], size_t buf_len)
{
size_t got = read_queue.read(buf, buf_len);
while(!exit && !got)
{
read_loop(5); // header size
got = read_queue.read(buf, buf_len);
}
return got;
}
void write(const byte buf[], size_t buf_len)
{
server.send(buf, buf_len);
}
void close() { server.close(); }
bool is_active() const { return server.is_active(); }
TLS::Server& underlying() { return server; }
private:
void read_loop(size_t init_desired = 0)
{
size_t desired = init_desired;
byte buf[4096];
while(!exit && (!server.is_active() || desired))
{
const size_t asking = std::max(sizeof(buf), std::min(desired, static_cast<size_t>(1)));
const size_t socket_got = input_fn(&buf[0], asking);
if(socket_got == 0) // eof?
{
close();
printf("got eof on socket\n");
exit = true;
}
desired = server.received_data(&buf[0], socket_got);
}
}
void reader_fn(const byte buf[], size_t buf_len, u16bit alert_code)
{
if(buf_len == 0 && alert_code != TLS::NULL_ALERT)
{
printf("Alert: %d\n", alert_code);
//exit = true;
}
printf("Got %d bytes: ", (int)buf_len);
for(size_t i = 0; i != buf_len; ++i)
{
if(isprint(buf[i]))
printf("%c", buf[i]);
}
printf("\n");
read_queue.write(buf, buf_len);
}
std::tr1::function<size_t (byte[], size_t)> input_fn;
TLS::Server server;
SecureQueue read_queue;
bool exit;
};
int main(int argc, char* argv[])
{
int port = 4433;
if(argc == 2)
port = to_u32bit(argv[1]);
try
{
LibraryInitializer botan_init;
//SocketInitializer socket_init;
AutoSeeded_RNG rng;
Server_Socket listener(port);
TLS::Policy policy;
TLS::Session_Manager_In_Memory sessions;
Credentials_Manager_Simple creds(rng);
std::vector<std::string> protocols;
protocols.push_back("spdy/2");
protocols.push_back("http/1.0");
while(true)
{
try {
printf("Listening for new connection on port %d\n", port);
std::auto_ptr<Socket> sock(listener.accept());
printf("Got new connection\n");
Blocking_TLS_Server tls(
std::tr1::bind(&Socket::write, std::tr1::ref(sock), _1, _2),
std::tr1::bind(&Socket::read, std::tr1::ref(sock), _1, _2, true),
protocols,
sessions,
creds,
policy,
rng);
const char* msg = "Welcome to the best echo server evar\n";
tls.write((const Botan::byte*)msg, strlen(msg));
std::string line;
while(tls.is_active())
{
byte b;
size_t got = tls.read(&b, 1);
if(got == 0)
break;
line += (char)b;
if(b == '\n')
{
//std::cout << line;
tls.write(reinterpret_cast<const byte*>(line.data()), line.size());
if(line == "quit\n")
{
tls.close();
break;
}
if(line == "reneg\n")
tls.underlying().renegotiate();
line.clear();
}
}
}
catch(std::exception& e) { printf("Connection problem: %s\n", e.what()); }
}
}
catch(std::exception& e)
{
printf("%s\n", e.what());
return 1;
}
return 0;
}
|
