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
|
#include "core.h"
/*static*/ bool SocketRWCommon::setSocketNonBlocking(int sock) {
int opts = fcntl(sock, F_GETFL);
if (opts < 0) {
perror("Could not get fcntl options\n");
return false;
}
opts |= O_NONBLOCK;
if (fcntl(sock, F_SETFL, opts) == -1) {
perror("Could not set fcntl options\n");
return false;
}
return true;
}
SocketRWCommon::SocketRWCommon(NetCore *_netCore) {
netCore = _netCore;
sock = -1;
state = CS_DISCONNECTED;
#ifdef USE_GNUTLS
tlsActive = false;
#endif
}
SocketRWCommon::~SocketRWCommon() {
close();
}
#ifdef USE_GNUTLS
bool SocketRWCommon::hasTlsPendingData() const {
if (tlsActive)
return (gnutls_record_check_pending(tls) > 0);
else
return false;
}
bool SocketRWCommon::tryTLSHandshake() {
int hsRet = gnutls_handshake(tls);
if (gnutls_error_is_fatal(hsRet)) {
printf("[SocketRWCommon::tryTLSHandshake] gnutls_handshake borked\n");
gnutls_perror(hsRet);
close();
return false;
}
if (hsRet == GNUTLS_E_SUCCESS) {
// We're in !!
state = CS_CONNECTED;
inputBuf.clear();
outputBuf.clear();
printf("[SocketRWCommon connected via SSL!]\n");
return true;
}
return false;
}
#endif
void SocketRWCommon::close() {
if (sock != -1) {
#ifdef USE_GNUTLS
if (tlsActive)
gnutls_bye(tls, GNUTLS_SHUT_RDWR);
#endif
shutdown(sock, SHUT_RDWR);
::close(sock);
}
sock = -1;
inputBuf.clear();
outputBuf.clear();
state = CS_DISCONNECTED;
#ifdef USE_GNUTLS
if (tlsActive) {
gnutls_deinit(tls);
tlsActive = false;
}
#endif
}
void SocketRWCommon::readAction() {
// Ensure we have at least 0x200 bytes space free
// (Up this, maybe?)
int bufSize = inputBuf.size();
int requiredSize = bufSize + 0x200;
if (requiredSize > inputBuf.capacity())
inputBuf.setCapacity(requiredSize);
ssize_t amount;
#ifdef USE_GNUTLS
if (tlsActive) {
amount = gnutls_record_recv(tls,
&inputBuf.data()[bufSize],
0x200);
} else
#endif
{
amount = recv(sock,
&inputBuf.data()[bufSize],
0x200,
0);
}
if (amount > 0) {
// Yep, we have data
printf("[fd=%d] Read %d bytes\n", sock, amount);
inputBuf.resize(bufSize + amount);
processReadBuffer();
} else if (amount == 0) {
printf("[fd=%d] Read 0! Socket closing.\n", sock);
close();
} else if (amount < 0) {
#ifdef USE_GNUTLS
if (tlsActive) {
if (gnutls_error_is_fatal(amount)) {
printf("Error while reading [gnutls %d]!\n", amount);
close();
}
} else
#endif
{
perror("Error while reading!");
close();
}
}
}
void SocketRWCommon::writeAction() {
// What can we get rid of...?
ssize_t amount;
#ifdef USE_GNUTLS
if (tlsActive) {
amount = gnutls_record_send(tls,
outputBuf.data(),
outputBuf.size());
} else
#endif
{
amount = send(sock,
outputBuf.data(),
outputBuf.size(),
0);
}
if (amount > 0) {
printf("[fd=%d] Wrote %d bytes out of %d\n", sock, amount, outputBuf.size());
outputBuf.trimFromStart(amount);
} else if (amount == 0)
printf("Sent 0!\n");
else if (amount < 0) {
#ifdef USE_GNUTLS
if (tlsActive) {
if (gnutls_error_is_fatal(amount)) {
printf("Error while sending [gnutls %d]!\n", amount);
close();
}
} else
#endif
{
perror("Error while sending!");
close();
}
}
}
|
