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
|
/*
* tcpproxy
*
* tcpproxy is a simple tcp connection proxy which combines the
* features of rinetd and 6tunnel. tcpproxy supports IPv4 and
* IPv6 and also supports connections from IPv6 to IPv4
* endpoints and vice versa.
*
*
* Copyright (C) 2010-2011 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of tcpproxy.
*
* tcpproxy 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 3 of the License, or
* any later version.
*
* tcpproxy 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 tcpproxy. If not, see <http://www.gnu.org/licenses/>.
*/
#include "datatypes.h"
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
/* #include <netdb.h> */
/* #include <sys/types.h> */
/* #include <sys/socket.h> */
/* #include <arpa/inet.h> */
/* #include <netinet/in.h> */
/* #include <sys/select.h> */
#include "clients.h"
#include "tcp.h"
#include "log.h"
void clients_delete_element(void* e)
{
if(!e)
return;
client_t* element = (client_t*)e;
close(element->fd_);
free(e);
}
int clients_init(clients_t* list)
{
return slist_init(list, &clients_delete_element);
}
void clients_clear(clients_t* list)
{
slist_clear(list);
}
int clients_add(clients_t* list, int fd, tcp_endpoint_t remote_end)
{
if(!list)
return -1;
int ret = 0;
// TODO: connect to remote end and setup write buffers
return ret;
}
void clients_remove(clients_t* list, int fd)
{
slist_remove(list, clients_find(list, fd));
}
client_t* clients_find(clients_t* list, int fd)
{
if(!list)
return NULL;
slist_element_t* tmp = list->first_;
while(tmp) {
client_t* l = (client_t*)tmp->data_;
if(l && l->fd_ == fd)
return l;
tmp = tmp->next_;
}
return NULL;
}
void clients_print(clients_t* list)
{
if(!list)
return;
slist_element_t* tmp = list->first_;
while(tmp) {
client_t* l = (client_t*)tmp->data_;
if(l) {
// print useful info
printf("clients #%d: tba...\n", l->fd_);
}
tmp = tmp->next_;
}
}
void clients_read_fds(clients_t* list, fd_set* set, int* max_fd)
{
if(!list)
return;
slist_element_t* tmp = list->first_;
while(tmp) {
client_t* l = (client_t*)tmp->data_;
if(l) {
FD_SET(l->fd_, set);
*max_fd = *max_fd > l->fd_ ? *max_fd : l->fd_;
}
tmp = tmp->next_;
}
}
void clients_write_fds(clients_t* list, fd_set* set, int* max_fd)
{
if(!list)
return;
// TODO: add all clients with pending data
/* slist_element_t* tmp = list->first_; */
/* while(tmp) { */
/* client_t* l = (client_t*)tmp->data_; */
/* if(l) { */
/* FD_SET(l->fd_, set); */
/* *max_fd = *max_fd > l->fd_ ? *max_fd : l->fd_; */
/* } */
/* tmp = tmp->next_; */
/* } */
}
|
