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
|
#pragma once
#include <memory>
#include "misc.hh"
class TLSConnection
{
public:
virtual ~TLSConnection() { }
virtual size_t read(void* buffer, size_t bufferSize, unsigned int readTimeout, unsigned int totalTimeout=0) = 0;
virtual size_t write(const void* buffer, size_t bufferSize, unsigned int writeTimeout) = 0;
virtual void close() = 0;
protected:
int d_socket{-1};
};
class TLSCtx
{
public:
TLSCtx()
{
d_rotatingTicketsKey.clear();
}
virtual ~TLSCtx() {}
virtual std::unique_ptr<TLSConnection> getConnection(int socket, unsigned int timeout, time_t now) = 0;
virtual void rotateTicketsKey(time_t now) = 0;
virtual void loadTicketsKeys(const std::string& file)
{
throw std::runtime_error("This TLS backend does not have the capability to load a tickets key from a file");
}
void handleTicketsKeyRotation(time_t now)
{
if (d_ticketsKeyRotationDelay != 0 && now > d_ticketsKeyNextRotation) {
if (d_rotatingTicketsKey.test_and_set()) {
/* someone is already rotating */
return;
}
try {
rotateTicketsKey(now);
d_rotatingTicketsKey.clear();
}
catch(const std::runtime_error& e) {
d_rotatingTicketsKey.clear();
throw std::runtime_error("Error generating a new tickets key for TLS context");
}
}
}
time_t getNextTicketsKeyRotation() const
{
return d_ticketsKeyNextRotation;
}
virtual size_t getTicketsKeysCount() = 0;
protected:
std::atomic_flag d_rotatingTicketsKey;
time_t d_ticketsKeyRotationDelay{0};
time_t d_ticketsKeyNextRotation{0};
};
class TLSFrontend
{
public:
bool setupTLS();
void rotateTicketsKey(time_t now)
{
if (d_ctx != nullptr) {
d_ctx->rotateTicketsKey(now);
}
}
void loadTicketsKeys(const std::string& file)
{
if (d_ctx != nullptr) {
d_ctx->loadTicketsKeys(file);
}
}
std::shared_ptr<TLSCtx> getContext()
{
return d_ctx;
}
void cleanup()
{
d_ctx.reset();
}
size_t getTicketsKeysCount()
{
if (d_ctx != nullptr) {
return d_ctx->getTicketsKeysCount();
}
return 0;
}
static std::string timeToString(time_t rotationTime)
{
char buf[20];
struct tm date_tm;
localtime_r(&rotationTime, &date_tm);
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", &date_tm);
return std::string(buf);
}
time_t getTicketsKeyRotationDelay() const
{
return d_ticketsKeyRotationDelay;
}
std::string getNextTicketsKeyRotation() const
{
std::string res;
if (d_ctx != nullptr) {
res = timeToString(d_ctx->getNextTicketsKeyRotation());
}
return res;
}
std::set<int> d_cpus;
std::vector<std::pair<std::string, std::string>> d_certKeyPairs;
ComboAddress d_addr;
std::string d_ciphers;
std::string d_provider;
std::string d_interface;
std::string d_ticketKeyFile;
size_t d_maxStoredSessions{20480};
time_t d_ticketsKeyRotationDelay{43200};
int d_tcpFastOpenQueueSize{0};
uint8_t d_numberOfTicketsKeys{5};
bool d_reusePort{false};
bool d_enableTickets{true};
private:
std::shared_ptr<TLSCtx> d_ctx{nullptr};
};
class TCPIOHandler
{
public:
TCPIOHandler(int socket, unsigned int timeout, std::shared_ptr<TLSCtx> ctx, time_t now): d_socket(socket)
{
if (ctx) {
d_conn = ctx->getConnection(d_socket, timeout, now);
}
}
~TCPIOHandler()
{
if (d_conn) {
d_conn->close();
}
else if (d_socket != -1) {
shutdown(d_socket, SHUT_RDWR);
}
}
size_t read(void* buffer, size_t bufferSize, unsigned int readTimeout, unsigned int totalTimeout=0)
{
if (d_conn) {
return d_conn->read(buffer, bufferSize, readTimeout, totalTimeout);
} else {
return readn2WithTimeout(d_socket, buffer, bufferSize, readTimeout, totalTimeout);
}
}
size_t write(const void* buffer, size_t bufferSize, unsigned int writeTimeout)
{
if (d_conn) {
return d_conn->write(buffer, bufferSize, writeTimeout);
}
else {
return writen2WithTimeout(d_socket, buffer, bufferSize, writeTimeout);
}
}
bool writeSizeAndMsg(const void* buffer, size_t bufferSize, unsigned int writeTimeout)
{
if (d_conn) {
uint16_t size = htons(bufferSize);
if (d_conn->write(&size, sizeof(size), writeTimeout) != sizeof(size)) {
return false;
}
return (d_conn->write(buffer, bufferSize, writeTimeout) == bufferSize);
}
else {
return sendSizeAndMsgWithTimeout(d_socket, bufferSize, static_cast<const char*>(buffer), writeTimeout, nullptr, nullptr, 0, 0, 0);
}
}
private:
std::unique_ptr<TLSConnection> d_conn{nullptr};
int d_socket{-1};
};
|
