blob: 2080ad0e7d7fccc654f2b0bf1271d4b7e3745f70 (
plain)
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
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* select
*/
#include <sys/select.h>
#include <vdr/plugin.h>
#include <vdr/timers.h>
#include "sock.h"
#include "select.h"
#include "handler.h"
#include "helpers.h"
struct node {
cVdrmanagerClientSocket * socket;
node * next;
};
cSelect::cSelect() {
serversocket = NULL;
sslServersocket = NULL;
clientsockets = NULL;
clientsocketcount = 0;
handler = new cHandler;
pollfds = NULL;
stopped = false;
nexttimer = 0;
shutdown = 0;
}
cSelect::~cSelect() {
if (serversocket)
delete serversocket;
if (sslServersocket)
delete sslServersocket;
while (clientsockets) {
node * next = clientsockets->next;
delete clientsockets->socket;
delete clientsockets;
clientsockets = next;
}
if (handler)
delete handler;
if (pollfds)
delete pollfds;
}
void cSelect::SetServerSockets(cVdrmanagerServerSocket * sock, cVdrmanagerServerSocket * sslSock) {
serversocket = sock;
sslServersocket = sslSock;
}
void cSelect::AddClientSocket(cVdrmanagerClientSocket * sock) {
// remember socket
node * newnode = new node;
newnode->next = clientsockets;
newnode->socket = sock;
clientsockets = newnode;
clientsocketcount++;
}
void cSelect::RemoveClientSocket(cVdrmanagerClientSocket * sock) {
node * curnode = clientsockets;
node * lastnode = NULL;
while (curnode) {
if (curnode->socket == sock) {
// unlink node
if (lastnode)
lastnode->next = curnode->next;
else
clientsockets = curnode->next;
// free socket and node
delete curnode->socket;
delete curnode;
clientsocketcount--;
break;
}
lastnode = curnode;
curnode = curnode->next;
}
if (clientsockets) {
curnode = clientsockets;
while (curnode) {
curnode = curnode->next;
}
}
}
cVdrmanagerClientSocket * cSelect::GetClientSocket(int sock) {
node * curnode = clientsockets;
while (curnode) {
if (curnode->socket->GetSocket() == sock)
return curnode->socket;
curnode = curnode->next;
}
return NULL;
}
bool cSelect::Action() {
for (; !stopped;) {
if (!Poll())
return false;
}
return true;
}
int cSelect::CreatePollfds() {
int i = 0;
int count = clientsocketcount + (sslServersocket ? 2 : 1);
// we poll for the server socket and for each client socket
pollfds = new struct pollfd[count];
pollfds[i].fd = serversocket->GetSocket();
pollfds[i].revents = 0;
pollfds[i++].events = POLLIN;
if (sslServersocket) {
pollfds[i].fd = sslServersocket->GetSocket();
pollfds[i].revents = 0;
pollfds[i++].events = POLLIN;
}
node * curnode = clientsockets;
while (curnode) {
cVdrmanagerClientSocket * sock = curnode->socket;
pollfds[i].fd = sock->GetSocket();
if (sock->IsSSL()) {
if (sock->GetSslWantsSelect() == SSL_ERROR_WANT_READ) {
pollfds[i].events = POLLIN | POLLHUP;
} else if (sock->GetSslWantsSelect() == SSL_ERROR_WANT_WRITE) {
pollfds[i].events = POLLOUT;
} else {
pollfds[i].events = POLLIN | POLLHUP;
if (sock->WritePending())
pollfds[i].events |= POLLOUT;
}
} else {
pollfds[i].events = POLLIN | POLLHUP;
if (curnode->socket->WritePending())
pollfds[i].events |= POLLOUT;
}
pollfds[i++].revents = 0;
curnode = curnode->next;
}
return count;
}
bool cSelect::Poll() {
// poll for events
int count = CreatePollfds();
int rc = 0;
while ((rc = poll(pollfds, count, -1)) < 0) {
if (errno != EINTR)
break;
}
if (rc < 0) {
LOG_ERROR;
delete pollfds;
return false;
}
// timeout?
if (rc == 0)
return true;
// client requests or outstanding writes
for (int i = (sslServersocket ? 2 : 1); i < count; i++) {
cVdrmanagerClientSocket * sock = GetClientSocket(pollfds[i].fd);
if (sock) {
if ((pollfds[i].revents & (POLLIN|POLLOUT)) && sock->GetSslReadWrite() != SSL_NO_RETRY) {
if (sock->GetSslReadWrite() == SSL_RETRY_READ) {
handler->HandleClientRequest(sock);
} else {
sock->Flush();
}
} else if (pollfds[i].revents & POLLOUT) {
// possibly outstanding writes
sock->Flush();
} else if (pollfds[i].revents & (POLLIN | POLLHUP)) {
// client request
handler->HandleClientRequest(sock);
}
// disconnect?
if (sock->Disconnected()) {
RemoveClientSocket(sock);
}
}
}
// new client?
for(int i = 0; i < (sslServersocket ? 2 : 1); i++) {
if (pollfds[i].revents & POLLIN) {
// get client socket
cVdrmanagerClientSocket * sock;
if (i == 0)
sock = serversocket->Accept();
else
sock = sslServersocket->Accept();
if (sock) {
// Add client socket
AddClientSocket(sock);
// Send current data
handler->HandleNewClient(sock);
}
}
}
delete pollfds;
return true;
}
|
