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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include <string>
#include "configreader.h"
#include "socket.h"
#include "inspircd.h"
#include "inspstring.h"
#include "helperfuncs.h"
#include "socketengine.h"
#include "message.h"
extern InspIRCd* ServerInstance;
extern ServerConfig* Config;
extern time_t TIME;
/** This will bind a socket to a port. It works for UDP/TCP.
* It can only bind to IP addresses, if you wish to bind to hostnames
* you should first resolve them using class 'Resolver'.
*/
bool BindSocket(int sockfd, insp_sockaddr client, insp_sockaddr server, int port, char* addr)
{
memset(&server,0,sizeof(server));
insp_inaddr addy;
if (*addr == '*')
*addr = 0;
if ((*addr) && (insp_aton(addr,&addy) < 1))
{
log(DEBUG,"Invalid IP '%s' given to BindSocket()", addr);
return false;;
}
#ifdef IPV6
server.sin6_family = AF_FAMILY;
#else
server.sin_family = AF_FAMILY;
#endif
if (!*addr)
{
#ifdef IPV6
memcpy(&addy, &server.sin6_addr, sizeof(in6_addr));
#else
server.sin_addr.s_addr = htonl(INADDR_ANY);
#endif
}
else
{
#ifdef IPV6
memcpy(&addy, &server.sin6_addr, sizeof(in6_addr));
#else
server.sin_addr = addy;
#endif
}
#ifdef IPV6
server.sin6_port = htons(port);
#else
server.sin_port = htons(port);
#endif
if (bind(sockfd,(struct sockaddr*)&server,sizeof(server)) < 0)
{
return false;
}
else
{
log(DEBUG,"Bound port %s:%d",*addr ? addr : "*",port);
if (listen(sockfd, Config->MaxConn) == -1)
{
log(DEFAULT,"ERROR in listen(): %s",strerror(errno));
return false;
}
else
{
NonBlocking(sockfd);
return true;
}
}
}
// Open a TCP Socket
int OpenTCPSocket()
{
int sockfd;
int on = 1;
struct linger linger = { 0 };
if ((sockfd = socket (AF_FAMILY, SOCK_STREAM, 0)) < 0)
{
log(DEFAULT,"Error creating TCP socket: %s",strerror(errno));
return (ERROR);
}
else
{
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
/* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
linger.l_onoff = 1;
linger.l_linger = 1;
setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &linger,sizeof(linger));
return (sockfd);
}
}
bool HasPort(int port, char* addr)
{
for (unsigned long count = 0; count < ServerInstance->stats->BoundPortCount; count++)
{
if ((port == Config->ports[count]) && (!strcasecmp(Config->addrs[count],addr)))
{
return true;
}
}
return false;
}
int BindPorts(bool bail)
{
char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
insp_sockaddr client, server;
int clientportcount = 0;
int BoundPortCount = 0;
if (!bail)
{
int InitialPortCount = ServerInstance->stats->BoundPortCount;
log(DEBUG,"Initial port count: %d",InitialPortCount);
for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++)
{
Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF);
Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF);
Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF);
if (((!*Type) || (!strcmp(Type,"clients"))) && (!HasPort(atoi(configToken),Addr)))
{
// modules handle server bind types now
Config->ports[clientportcount+InitialPortCount] = atoi(configToken);
if (*Addr == '*')
*Addr = 0;
strlcpy(Config->addrs[clientportcount+InitialPortCount],Addr,256);
clientportcount++;
log(DEBUG,"NEW binding %s:%s [%s] from config",Addr,configToken, Type);
}
}
int PortCount = clientportcount;
if (PortCount)
{
for (int count = InitialPortCount; count < InitialPortCount + PortCount; count++)
{
if ((Config->openSockfd[count] = OpenTCPSocket()) == ERROR)
{
log(DEBUG,"Bad fd %d binding port [%s:%d]",Config->openSockfd[count],Config->addrs[count],Config->ports[count]);
return ERROR;
}
if (!BindSocket(Config->openSockfd[count],client,server,Config->ports[count],Config->addrs[count]))
{
log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
}
else
{
/* Associate the new open port with a slot in the socket engine */
if (Config->openSockfd[count] > -1)
{
ServerInstance->SE->AddFd(Config->openSockfd[count],true,X_LISTEN);
BoundPortCount++;
}
}
}
return InitialPortCount + BoundPortCount;
}
else
{
log(DEBUG,"There is nothing new to bind!");
}
return InitialPortCount;
}
for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++)
{
Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF);
Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF);
Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF);
if ((!*Type) || (!strcmp(Type,"clients")))
{
// modules handle server bind types now
Config->ports[clientportcount] = atoi(configToken);
// If the client put bind "*", this is an unrealism.
// We don't actually support this as documented, but
// i got fed up of people trying it, so now it converts
// it to an empty string meaning the same 'bind to all'.
if (*Addr == '*')
*Addr = 0;
strlcpy(Config->addrs[clientportcount],Addr,256);
clientportcount++;
log(DEBUG,"Binding %s:%s [%s] from config",Addr,configToken, Type);
}
}
int PortCount = clientportcount;
for (int count = 0; count < PortCount; count++)
{
if ((Config->openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
{
log(DEBUG,"Bad fd %d binding port [%s:%d]",Config->openSockfd[BoundPortCount],Config->addrs[count],Config->ports[count]);
return ERROR;
}
if (!BindSocket(Config->openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]))
{
log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
}
else
{
/* well we at least bound to one socket so we'll continue */
BoundPortCount++;
}
}
/* if we didn't bind to anything then abort */
if (!BoundPortCount)
{
log(DEFAULT,"No ports bound, bailing!");
printf("\nERROR: Could not bind any of %d ports! Please check your configuration.\n\n", PortCount);
return ERROR;
}
return BoundPortCount;
}
const char* insp_ntoa(insp_inaddr n)
{
static char buf[1024];
inet_ntop(AF_FAMILY, &n, buf, sizeof(buf));
return buf;
}
int insp_aton(const char* a, insp_inaddr* n)
{
return inet_pton(AF_FAMILY, a, n);
}
|
