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
|
/*
** Copyright (C) 2006 Olivier DEMBOUR
** $Id: select.c,v 1.1.2.4 2010/01/20 15:42:56 dembour Exp $
**
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with This program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#ifndef _WIN32
#include <sys/wait.h>
#include <sys/select.h>
#include <strings.h>
#else
#include "mywin32.h"
#endif
#include "dns.h"
#include "list.h"
#include "myerror.h"
#include "client.h"
#include "debug.h"
#include "queue.h"
#include "socket.h"
#ifdef _WIN32
int add_event(WSAEVENT event, HANDLE *rfds, int max_fd)
{
rfds[max_fd] = event;
return ((int) (max_fd+1));
}
#else
int add_socket(socket_t socket, fd_set *rfds, socket_t max_fd)
{
FD_SET(socket, rfds);
return ((int)(MAX(max_fd, socket)));
}
#endif
#ifdef _WIN32
int win_prepare_select(t_conf *conf, WSAEVENT *rfds, struct timeval *tv)
{
int max_fd = 0;
t_simple_list *client;
max_fd = add_event(conf->event_udp, rfds, max_fd);
for (client = conf->client; client; client = client->next)
{
if (socket_is_valid(client->fd_ro))
{
queue_put_nop(conf, client);
if ((client->control.data_pending < MAX_DATA_SIZE)
&& ((client->control.data_pending + client->control.nop_pending < WINDOW_SIZE)))
{
if (client->control.event && socket_is_valid(client->fd_ro))
max_fd = add_event(client->control.event, rfds, max_fd);
else
{
if (client->pid != (process_t)-1) {
// watch for pipe I/O completion
max_fd = add_event(client->control.aio.hEvent, rfds, max_fd);
}
}
}
else
{
if (client->control.nop_pending == 0xffff)
{
DPRINTF(1, "WTF !\n");
exit(0);
}
SetEvent(conf->event_udp);
}
if (client->pid != (process_t)-1) {
// watch for process event (dead)
max_fd = add_event(client->pid, rfds, max_fd);
}
}
}
/* select only if sd_tcp is alive */
if (socket_is_valid(conf->sd_tcp))
max_fd = add_event(conf->event_tcp, rfds, max_fd);
tv->tv_sec = SOCKET_TIMEOUT;
tv->tv_usec = 0;
return (max_fd);
}
#else
int unix_prepare_select(t_conf *conf, fd_set *rfds, struct timeval *tv)
{
int max_fd = 0;
t_simple_list *client;
FD_ZERO(rfds);
for (client = conf->client; client; client = client->next)
{
if (socket_is_valid(client->fd_ro))
{
queue_put_nop(conf, client);
if (!(client->control.data_pending >= MAX_DATA_SIZE)
&& (!(client->control.data_pending + client->control.nop_pending >= WINDOW_SIZE)))
{
if (socket_is_valid(client->fd_ro))
max_fd = add_socket(client->fd_ro, rfds, max_fd);
}
}
}
max_fd = add_socket(conf->sd_udp, rfds, max_fd);
// fuck Windows, not queue debug
if ((!conf->use_stdin) && (debug > 1))
max_fd = add_socket(0, rfds, max_fd);
/* select only if sd_tcp is alive */
if (socket_is_valid(conf->sd_tcp))
max_fd = add_socket(conf->sd_tcp, rfds, max_fd);
tv->tv_sec = SOCKET_TIMEOUT;
tv->tv_usec = 0;
return (max_fd);
}
#endif
/**
* @brief prepare the fd_set for select or HANDLE for Windows
* @param[in] conf configuration
* @param[in] rfds the fd_set
* @param[in] tv timeval structure
* @retval last file descriptor
*/
int prepare_select(t_conf *conf, fd_set *rfds, struct timeval *tv)
{
#ifndef _WIN32
return (unix_prepare_select(conf, rfds, tv));
#else
return (win_prepare_select(conf, (WSAEVENT *)rfds, tv));
#endif
}
|
