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
|
/*
* ircd-ratbox: A slightly useful ircd.
* m_connect.c: Connects to a remote IRC server.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
* $Id: m_connect.c 26094 2008-09-19 15:33:46Z androsyn $
*/
#include "stdinc.h"
#include "struct.h"
#include "client.h"
#include "ircd.h"
#include "match.h"
#include "numeric.h"
#include "s_newconf.h"
#include "s_log.h"
#include "s_serv.h"
#include "send.h"
#include "parse.h"
#include "hash.h"
#include "modules.h"
#include "sslproc.h"
static int mo_connect(struct Client *, struct Client *, int, const char **);
static int ms_connect(struct Client *, struct Client *, int, const char **);
struct Message connect_msgtab = {
"CONNECT", 0, 0, 0, MFLG_SLOW,
{mg_unreg, mg_not_oper, {ms_connect, 4}, {ms_connect, 4}, mg_ignore, {mo_connect, 2}}
};
mapi_clist_av1 connect_clist[] = { &connect_msgtab, NULL };
DECLARE_MODULE_AV1(connect, NULL, NULL, connect_clist, NULL, NULL, "$Revision: 26094 $");
/*
* mo_connect - CONNECT command handler
*
* Added by Jto 11 Feb 1989
*
* m_connect
* parv[0] = sender prefix
* parv[1] = servername
* parv[2] = port number
* parv[3] = remote server
*/
static int
mo_connect(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
int port;
int tmpport;
struct server_conf *server_p;
struct Client *target_p;
/* always privileged with handlers */
if(MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
{
sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "remote");
return 0;
}
if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
return 0;
if((target_p = find_server(source_p, parv[1])))
{
sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
parv[1], target_p->from->name);
return 0;
}
/*
* try to find the name, then host, if both fail notify ops and bail
*/
if((server_p = find_server_conf(parv[1])) == NULL)
{
sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
return 0;
}
if(ServerConfSSL(server_p) && (!ircd_ssl_ok || !get_ssld_count()))
{
sendto_one_notice(source_p,
":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
parv[1]);
return 0;
}
/*
* Get port number from user, if given. If not specified,
* use the default form configuration structure. If missing
* from there, then use the precompiled default.
*/
tmpport = port = server_p->port;
if(parc > 2 && !EmptyString(parv[2]))
{
if((port = atoi(parv[2])) <= 0)
{
sendto_one_notice(source_p, ":Connect: Illegal port number");
return 0;
}
}
else if(port <= 0 && (port = PORTNUM) <= 0)
{
sendto_one_notice(source_p, ":Connect: missing port number");
return 0;
}
/*
* Notify all operators about remote connect requests
*/
ilog(L_SERVER, "CONNECT From %s : %s %s", parv[0], parv[1], parc > 2 ? parv[2] : "");
server_p->port = port;
/*
* at this point we should be calling connect_server with a valid
* C:line and a valid port in the C:line
*/
if(serv_connect(server_p, source_p))
{
sendto_one_notice(source_p, ":*** Connecting to %s.%d",
server_p->name, server_p->port);
}
else
{
sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
server_p->name, server_p->port);
}
/*
* client is either connecting with all the data it needs or has been
* destroyed
*/
server_p->port = tmpport;
return 0;
}
/*
* ms_connect - CONNECT command handler
*
* Added by Jto 11 Feb 1989
*
* m_connect
* parv[0] = sender prefix
* parv[1] = servername
* parv[2] = port number
* parv[3] = remote server
*/
static int
ms_connect(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
int port;
int tmpport;
struct server_conf *server_p;
struct Client *target_p;
if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
return 0;
if((target_p = find_server(NULL, parv[1])))
{
sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
parv[1], target_p->from->name);
return 0;
}
/*
* try to find the name, then host, if both fail notify ops and bail
*/
if((server_p = find_server_conf(parv[1])) == NULL)
{
sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
return 0;
}
if(ServerConfSSL(server_p) && (!ircd_ssl_ok || !get_ssld_count()))
{
sendto_one_notice(source_p,
":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
parv[1]);
return 0;
}
/*
* Get port number from user, if given. If not specified,
* use the default form configuration structure. If missing
* from there, then use the precompiled default.
*/
tmpport = server_p->port;
port = atoi(parv[2]);
/* if someone sends port 0, and we have a config port.. use it */
if(port == 0 && server_p->port)
port = server_p->port;
else if(port <= 0)
{
sendto_one_notice(source_p, ":Connect: Illegal port number");
return 0;
}
/*
* Notify all operators about remote connect requests
*/
sendto_wallops_flags(UMODE_WALLOP, &me,
"Remote CONNECT %s %d from %s", parv[1], port, source_p->name);
sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
":%s WALLOPS :Remote CONNECT %s %d from %s",
me.id, parv[1], port, source_p->name);
sendto_server(NULL, NULL, NOCAPS, CAP_TS6,
":%s WALLOPS :Remote CONNECT %s %d from %s",
me.name, parv[1], port, source_p->name);
ilog(L_SERVER, "CONNECT From %s : %s %d", source_p->name, parv[1], port);
server_p->port = port;
/*
* at this point we should be calling connect_server with a valid
* C:line and a valid port in the C:line
*/
if(serv_connect(server_p, source_p))
sendto_one_notice(source_p, ":*** Connecting to %s.%d",
server_p->name, server_p->port);
else
sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
server_p->name, server_p->port);
/*
* client is either connecting with all the data it needs or has been
* destroyed
*/
server_p->port = tmpport;
return 0;
}
|
