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jfr.im git - irc/quakenet/snircd.git/blob - ircd/m_connect.c
2 * IRC - Internet Relay Chat, ircd/m_connect.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 1, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * $Id: m_connect.c,v 1.17 2004/12/11 05:13:46 klmitch Exp $
27 * m_functions execute protocol messages on this server:
29 * cptr is always NON-NULL, pointing to a *LOCAL* client
30 * structure (with an open socket connected!). This
31 * identifies the physical socket where the message
32 * originated (or which caused the m_function to be
33 * executed--some m_functions may call others...).
35 * sptr is the source of the message, defined by the
36 * prefix part of the message if present. If not
37 * or prefix not found, then sptr==cptr.
39 * (!IsServer(cptr)) => (cptr == sptr), because
40 * prefixes are taken *only* from servers...
43 * (sptr == cptr) => the message didn't
46 * (sptr != cptr && IsServer(sptr) means
47 * the prefix specified servername. (?)
49 * (sptr != cptr && !IsServer(sptr) means
50 * that message originated from a remote
55 * (!IsServer(sptr)) means that, sptr can safely
56 * taken as defining the target structure of the
57 * message in this server.
59 * *Always* true (if 'parse' and others are working correct):
61 * 1) sptr->from == cptr (note: cptr->from == cptr)
63 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
64 * *cannot* be a local connection, unless it's
65 * actually cptr!). [MyConnect(x) should probably
66 * be defined as (x == x->from) --msa ]
68 * parc number of variable parameter strings (if zero,
69 * parv is allowed to be NULL)
71 * parv a NULL terminated list of parameter pointers,
73 * parv[0], sender (prefix string), if not present
74 * this points to an empty string.
75 * parv[1]...parv[parc-1]
76 * pointers to additional parameters
77 * parv[parc] == NULL, *always*
79 * note: it is guaranteed that parv[0]..parv[parc-1] are all
88 #include "ircd_features.h"
90 #include "ircd_reply.h"
91 #include "ircd_string.h"
102 /* #include <assert.h> -- Now using assert in ircd_log.h */
106 * ms_connect - server message handler
107 * - Added by Jto 11 Feb 1989
109 * parv[0] = sender prefix
110 * parv[1] = servername
111 * parv[2] = port number
112 * parv[3] = remote server
114 int ms_connect(struct Client
* cptr
, struct Client
* sptr
, int parc
, char* parv
[])
117 unsigned short tmpport
;
119 struct ConfItem
* aconf
;
120 struct Client
* acptr
;
126 if (!IsPrivileged(sptr
))
127 return send_reply(sptr
, ERR_NOPRIVILEGES
);
131 * this is coming from a server which should have already
132 * checked it's args, if we don't have parc == 4, something
135 protocol_violation(sptr
, "Too few parameters to connect");
136 return need_more_params(sptr
, "CONNECT");
139 if (hunt_server_cmd(sptr
, CMD_CONNECT
, cptr
, 1, "%s %s :%C", 3, parc
, parv
)
144 * need to find the conf entry first so we can use the server name from
145 * the conf entry instead of parv[1] to find out if the server is already
146 * present below. --Bleep
148 if (0 == (aconf
= conf_find_server(parv
[1]))) {
149 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Host %s not listed "
150 "in ircd.conf", sptr
, parv
[1]);
154 * use aconf->name to look up the server
156 if ((acptr
= FindServer(aconf
->name
))) {
157 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Server %s already "
158 "exists from %s", sptr
, parv
[1], cli_name(cli_from(acptr
)));
162 * Evaluate connection rules... If no rules found, allow the
163 * connect. Otherwise stop with the first true rule (ie: rules
164 * are ored together. Oper connects are effected only by D
165 * lines (CRULEALL) not d lines (CRULEAUTO).
167 if ((rule
= conf_eval_crule(aconf
->name
, CRULE_ALL
))) {
168 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Disallowed by rule: %s", sptr
, rule
);
172 * Check to see if the server is juped; if it is, disallow the connect
174 if ((ajupe
= jupe_find(aconf
->name
)) && JupeIsActive(ajupe
)) {
175 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Server %s is juped: %s",
176 sptr
, JupeServer(ajupe
), JupeReason(ajupe
));
181 * Allow opers to /connect foo.* 0 bah.* to connect foo and bah
182 * using the conf's configured port
184 port
= atoi(parv
[2]);
188 tmpport
= aconf
->address
.port
;
190 aconf
->address
.port
= port
;
192 port
= aconf
->address
.port
;
195 * Notify all operators about remote connect requests
197 sendwallto_group_butone(&me
, WALL_WALLOPS
, 0,
198 "Remote CONNECT %s %s from %s", parv
[1],
199 parv
[2] ? parv
[2] : "",
200 get_client_name(sptr
, HIDE_IP
));
201 log_write(LS_NETWORK
, L_INFO
, 0, "CONNECT From %C : %s %s", sptr
, parv
[1],
202 parv
[2] ? parv
[2] : "");
204 if (connect_server(aconf
, sptr
)) {
205 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :*** Connecting to %s.", sptr
,
209 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :*** Connection to %s failed",
212 aconf
->address
.port
= tmpport
;
217 * mo_connect - oper message handler
218 * - Added by Jto 11 Feb 1989
220 * parv[0] = sender prefix
221 * parv[1] = servername
222 * parv[2] = port number
223 * parv[3] = remote server
225 int mo_connect(struct Client
* cptr
, struct Client
* sptr
, int parc
, char* parv
[])
228 unsigned short tmpport
;
230 struct ConfItem
* aconf
;
231 struct Client
* acptr
;
235 assert(cptr
== sptr
);
236 assert(IsAnOper(sptr
));
239 return need_more_params(sptr
, "CONNECT");
243 * if parc > 3, we are trying to connect two remote
244 * servers to each other
248 * Only allow LocOps to make local CONNECTS --SRB
253 struct Client
* acptr2
;
254 struct Client
* acptr3
;
256 if (!(acptr3
= find_match_server(parv
[3]))) {
257 send_reply(sptr
, ERR_NOSUCHSERVER
, parv
[3]);
262 * Look for closest matching server
263 * needed for "/connect blah 4400 *"?
265 for (acptr2
= acptr3
; acptr2
!= &me
; acptr2
= cli_serv(acptr2
)->up
) {
266 if (!match(parv
[3], cli_name(acptr2
)))
269 parv
[3] = cli_name(acptr3
);
270 if (hunt_server_cmd(sptr
, CMD_CONNECT
, cptr
, 1, "%s %s :%C", 3, parc
,
271 parv
) != HUNTED_ISME
)
276 * need to find the conf entry first so we can use the server name from
277 * the conf entry instead of parv[1] to find out if the server is already
278 * present below. --Bleep
280 if (0 == (aconf
= conf_find_server(parv
[1]))) {
281 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Host %s not listed "
282 "in ircd.conf", sptr
, parv
[1]);
286 * use aconf->name to look up the server, see above
288 if ((acptr
= FindServer(aconf
->name
))) {
289 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Server %s already "
290 "exists from %s", sptr
, parv
[1], cli_name(cli_from(acptr
)));
294 * Evaluate connection rules... If no rules found, allow the
295 * connect. Otherwise stop with the first true rule (ie: rules
296 * are ored together. Oper connects are effected only by D
297 * lines (CRULEALL) not d lines (CRULEAUTO).
299 if ((rule
= conf_eval_crule(aconf
->name
, CRULE_ALL
))) {
300 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Disallowed by rule: %s", sptr
, rule
);
304 * Check to see if the server is juped; if it is, disallow the connect
306 if ((ajupe
= jupe_find(aconf
->name
)) && JupeIsActive(ajupe
)) {
307 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Server %s is juped: %s",
308 sptr
, JupeServer(ajupe
), JupeReason(ajupe
));
312 * Get port number from user, if given. If not specified,
313 * use the default from configuration structure. If missing
314 * from there, then use the precompiled default.
316 port
= aconf
->address
.port
;
318 assert(0 != parv
[2]);
319 if (0 == (port
= atoi(parv
[2]))) {
320 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: Invalid port number",
325 if (0 == port
&& 0 == (port
= feature_int(FEAT_SERVER_PORT
))) {
326 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :Connect: missing port number",
331 tmpport
= aconf
->address
.port
;
332 aconf
->address
.port
= port
;
334 if (connect_server(aconf
, sptr
)) {
335 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :*** Connecting to %s.", sptr
,
339 sendcmdto_one(&me
, CMD_NOTICE
, sptr
, "%C :*** Connection to %s failed",
342 aconf
->address
.port
= tmpport
;