1 |
/* |
2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
3 |
* client.c: Controls clients. |
4 |
* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
6 |
* |
7 |
* This program is free software; you can redistribute it and/or modify |
8 |
* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
10 |
* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
20 |
* USA |
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* |
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* $Id$ |
23 |
*/ |
24 |
|
25 |
#include "stdinc.h" |
26 |
#include "client.h" |
27 |
#include "channel_mode.h" |
28 |
#include "common.h" |
29 |
#include "hash.h" |
30 |
#include "ircd.h" |
31 |
#include "s_gline.h" |
32 |
#include "numeric.h" |
33 |
#include "packet.h" |
34 |
#include "s_auth.h" |
35 |
#include "s_conf.h" |
36 |
#include "parse_aline.h" |
37 |
#include "s_serv.h" |
38 |
#include "send.h" |
39 |
#include "whowas.h" |
40 |
#include "s_user.h" |
41 |
#include "hostmask.h" |
42 |
#include "listener.h" |
43 |
#include "userhost.h" |
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#include "s_stats.h" |
45 |
#include "watch.h" |
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|
47 |
dlink_list listing_client_list = { NULL, NULL, 0 }; |
48 |
/* Pointer to beginning of Client list */ |
49 |
dlink_list global_client_list = {NULL, NULL, 0}; |
50 |
/* unknown/client pointer lists */ |
51 |
dlink_list unknown_list = {NULL, NULL, 0}; |
52 |
dlink_list local_client_list = {NULL, NULL, 0}; |
53 |
dlink_list serv_list = {NULL, NULL, 0}; |
54 |
dlink_list global_serv_list = {NULL, NULL, 0}; |
55 |
dlink_list oper_list = {NULL, NULL, 0}; |
56 |
|
57 |
static EVH check_pings; |
58 |
|
59 |
static BlockHeap *client_heap = NULL; |
60 |
static BlockHeap *lclient_heap = NULL; |
61 |
|
62 |
static dlink_list dead_list = { NULL, NULL, 0}; |
63 |
static dlink_list abort_list = { NULL, NULL, 0}; |
64 |
|
65 |
static dlink_node *eac_next; /* next aborted client to exit */ |
66 |
|
67 |
static void check_pings_list(dlink_list *); |
68 |
static void check_unknowns_list(void); |
69 |
static void close_connection(struct Client *); |
70 |
static void ban_them(struct Client *client_p, struct ConfItem *conf); |
71 |
static void del_all_accepts(struct Client *); |
72 |
|
73 |
/* init_client() |
74 |
* |
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* inputs - NONE |
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* output - NONE |
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* side effects - initialize client free memory |
78 |
*/ |
79 |
void |
80 |
init_client(void) |
81 |
{ |
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/* start off the check ping event .. -- adrian |
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* Every 30 seconds is plenty -- db |
84 |
*/ |
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client_heap = BlockHeapCreate("client", sizeof(struct Client), CLIENT_HEAP_SIZE); |
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lclient_heap = BlockHeapCreate("local client", sizeof(struct LocalUser), LCLIENT_HEAP_SIZE); |
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eventAdd("check_pings", check_pings, NULL, 5); |
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} |
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|
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/* |
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* make_client - create a new Client struct and set it to initial state. |
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* |
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* from == NULL, create local client (a client connected |
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* to a socket). |
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* WARNING: This leaves the client in a dangerous |
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* state where fd == -1, dead flag is not set and |
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* the client is on the unknown_list; therefore, |
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* the first thing to do after calling make_client(NULL) |
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* is setting fd to something reasonable. -adx |
100 |
* |
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* from, create remote client (behind a socket |
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* associated with the client defined by |
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* 'from'). ('from' is a local client!!). |
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*/ |
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struct Client * |
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make_client(struct Client *from) |
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{ |
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struct Client *client_p = BlockHeapAlloc(client_heap); |
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|
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if (from == NULL) |
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{ |
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client_p->from = client_p; /* 'from' of local client is self! */ |
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client_p->since = client_p->lasttime = client_p->firsttime = CurrentTime; |
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|
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client_p->localClient = BlockHeapAlloc(lclient_heap); |
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/* as good a place as any... */ |
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dlinkAdd(client_p, make_dlink_node(), &unknown_list); |
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} |
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else |
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client_p->from = from; |
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|
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client_p->hnext = client_p; |
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client_p->status = STAT_UNKNOWN; |
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strcpy(client_p->username, "unknown"); |
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|
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return client_p; |
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} |
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|
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/* |
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* free_client |
131 |
* |
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* inputs - pointer to client |
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* output - NONE |
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* side effects - client pointed to has its memory freed |
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*/ |
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static void |
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free_client(struct Client *client_p) |
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{ |
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assert(client_p != NULL); |
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assert(client_p != &me); |
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assert(client_p->hnext == client_p); |
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assert(client_p->channel.head == NULL); |
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assert(dlink_list_length(&client_p->channel) == 0); |
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|
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MyFree(client_p->away); |
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MyFree(client_p->serv); |
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|
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if (MyConnect(client_p)) |
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{ |
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assert(dlink_list_length(&client_p->localClient->invited) == 0); |
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assert(client_p->localClient->invited.head == NULL); |
152 |
assert(IsClosing(client_p) && IsDead(client_p)); |
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|
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MyFree(client_p->localClient->response); |
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MyFree(client_p->localClient->auth_oper); |
156 |
|
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/* |
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* clean up extra sockets from P-lines which have been discarded. |
159 |
*/ |
160 |
if (client_p->localClient->listener) |
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{ |
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assert(0 < client_p->localClient->listener->ref_count); |
163 |
if (0 == --client_p->localClient->listener->ref_count && |
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!client_p->localClient->listener->active) |
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free_listener(client_p->localClient->listener); |
166 |
} |
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|
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dbuf_clear(&client_p->localClient->buf_recvq); |
169 |
dbuf_clear(&client_p->localClient->buf_sendq); |
170 |
|
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BlockHeapFree(lclient_heap, client_p->localClient); |
172 |
} |
173 |
|
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BlockHeapFree(client_heap, client_p); |
175 |
} |
176 |
|
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/* |
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* check_pings - go through the local client list and check activity |
179 |
* kill off stuff that should die |
180 |
* |
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* inputs - NOT USED (from event) |
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* output - next time_t when check_pings() should be called again |
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* side effects - |
184 |
* |
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* |
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* A PING can be sent to clients as necessary. |
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* |
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* Client/Server ping outs are handled. |
189 |
*/ |
190 |
|
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/* |
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* Addon from adrian. We used to call this after nextping seconds, |
193 |
* however I've changed it to run once a second. This is only for |
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* PING timeouts, not K/etc-line checks (thanks dianora!). Having it |
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* run once a second makes life a lot easier - when a new client connects |
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* and they need a ping in 4 seconds, if nextping was set to 20 seconds |
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* we end up waiting 20 seconds. This is stupid. :-) |
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* I will optimise (hah!) check_pings() once I've finished working on |
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* tidying up other network IO evilnesses. |
200 |
* -- adrian |
201 |
*/ |
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|
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static void |
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check_pings(void *notused) |
205 |
{ |
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check_pings_list(&local_client_list); |
207 |
check_pings_list(&serv_list); |
208 |
check_unknowns_list(); |
209 |
} |
210 |
|
211 |
/* check_pings_list() |
212 |
* |
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* inputs - pointer to list to check |
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* output - NONE |
215 |
* side effects - |
216 |
*/ |
217 |
static void |
218 |
check_pings_list(dlink_list *list) |
219 |
{ |
220 |
char scratch[32]; /* way too generous but... */ |
221 |
struct Client *client_p; /* current local client_p being examined */ |
222 |
int ping, pingwarn; /* ping time value from client */ |
223 |
dlink_node *ptr, *next_ptr; |
224 |
|
225 |
DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
226 |
{ |
227 |
client_p = ptr->data; |
228 |
|
229 |
/* |
230 |
** Note: No need to notify opers here. It's |
231 |
** already done when "FLAGS_DEADSOCKET" is set. |
232 |
*/ |
233 |
if (IsDead(client_p)) |
234 |
{ |
235 |
/* Ignore it, its been exited already */ |
236 |
continue; |
237 |
} |
238 |
|
239 |
if (client_p->localClient->reject_delay > 0) |
240 |
{ |
241 |
if (client_p->localClient->reject_delay <= CurrentTime) |
242 |
exit_client(client_p, &me, "Rejected"); |
243 |
continue; |
244 |
} |
245 |
|
246 |
if (GlobalSetOptions.idletime && IsClient(client_p)) |
247 |
{ |
248 |
if (!IsExemptKline(client_p) && !IsOper(client_p) && |
249 |
!IsIdlelined(client_p) && |
250 |
((CurrentTime - client_p->localClient->last) > GlobalSetOptions.idletime)) |
251 |
{ |
252 |
struct ConfItem *conf; |
253 |
struct AccessItem *aconf; |
254 |
|
255 |
conf = make_conf_item(KLINE_TYPE); |
256 |
aconf = &conf->conf.AccessItem; |
257 |
|
258 |
DupString(aconf->host, client_p->host); |
259 |
DupString(aconf->reason, "idle exceeder"); |
260 |
DupString(aconf->user, client_p->username); |
261 |
aconf->hold = CurrentTime + 60; |
262 |
add_temp_line(conf); |
263 |
|
264 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
265 |
"Idle time limit exceeded for %s - temp k-lining", |
266 |
get_client_name(client_p, HIDE_IP)); |
267 |
exit_client(client_p, &me, aconf->reason); |
268 |
continue; |
269 |
} |
270 |
} |
271 |
|
272 |
if (!IsRegistered(client_p)) |
273 |
ping = CONNECTTIMEOUT, pingwarn = 0; |
274 |
else |
275 |
ping = get_client_ping(client_p, &pingwarn); |
276 |
|
277 |
if (ping < CurrentTime - client_p->lasttime) |
278 |
{ |
279 |
if (!IsPingSent(client_p)) |
280 |
{ |
281 |
/* |
282 |
* if we havent PINGed the connection and we havent |
283 |
* heard from it in a while, PING it to make sure |
284 |
* it is still alive. |
285 |
*/ |
286 |
SetPingSent(client_p); |
287 |
ClearPingWarning(client_p); |
288 |
client_p->lasttime = CurrentTime - ping; |
289 |
sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p)); |
290 |
} |
291 |
else |
292 |
{ |
293 |
if (CurrentTime - client_p->lasttime >= 2 * ping) |
294 |
{ |
295 |
/* |
296 |
* If the client/server hasn't talked to us in 2*ping seconds |
297 |
* and it has a ping time, then close its connection. |
298 |
*/ |
299 |
if (IsServer(client_p) || IsHandshake(client_p)) |
300 |
{ |
301 |
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
302 |
"No response from %s, closing link", |
303 |
get_client_name(client_p, HIDE_IP)); |
304 |
sendto_realops_flags(UMODE_ALL, L_OPER, |
305 |
"No response from %s, closing link", |
306 |
get_client_name(client_p, MASK_IP)); |
307 |
ilog(L_NOTICE, "No response from %s, closing link", |
308 |
get_client_name(client_p, HIDE_IP)); |
309 |
} |
310 |
ircsprintf(scratch, "Ping timeout: %d seconds", |
311 |
(int)(CurrentTime - client_p->lasttime)); |
312 |
|
313 |
exit_client(client_p, &me, scratch); |
314 |
} |
315 |
else if (!IsPingWarning(client_p) && pingwarn > 0 && |
316 |
(IsServer(client_p) || IsHandshake(client_p)) && |
317 |
CurrentTime - client_p->lasttime >= ping + pingwarn) |
318 |
{ |
319 |
/* |
320 |
* If the server hasn't replied in pingwarn seconds after sending |
321 |
* the PING, notify the opers so that they are aware of the problem. |
322 |
*/ |
323 |
SetPingWarning(client_p); |
324 |
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
325 |
"Warning, no response from %s in %d seconds", |
326 |
get_client_name(client_p, HIDE_IP), pingwarn); |
327 |
sendto_realops_flags(UMODE_ALL, L_OPER, |
328 |
"Warning, no response from %s in %d seconds", |
329 |
get_client_name(client_p, MASK_IP), pingwarn); |
330 |
ilog(L_NOTICE, "No response from %s in %d seconds", |
331 |
get_client_name(client_p, HIDE_IP), pingwarn); |
332 |
} |
333 |
} |
334 |
} |
335 |
} |
336 |
} |
337 |
|
338 |
/* check_unknowns_list() |
339 |
* |
340 |
* inputs - pointer to list of unknown clients |
341 |
* output - NONE |
342 |
* side effects - unknown clients get marked for termination after n seconds |
343 |
*/ |
344 |
static void |
345 |
check_unknowns_list(void) |
346 |
{ |
347 |
dlink_node *ptr, *next_ptr; |
348 |
|
349 |
DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
350 |
{ |
351 |
struct Client *client_p = ptr->data; |
352 |
|
353 |
if (client_p->localClient->reject_delay > 0) |
354 |
{ |
355 |
if (client_p->localClient->reject_delay <= CurrentTime) |
356 |
exit_client(client_p, &me, "Rejected"); |
357 |
continue; |
358 |
} |
359 |
|
360 |
/* Check UNKNOWN connections - if they have been in this state |
361 |
* for > 30s, close them. |
362 |
*/ |
363 |
if (client_p->firsttime ? ((CurrentTime - client_p->firsttime) > 30) : 0) |
364 |
exit_client(client_p, &me, "Connection timed out"); |
365 |
} |
366 |
} |
367 |
|
368 |
/* check_conf_klines() |
369 |
* |
370 |
* inputs - NONE |
371 |
* output - NONE |
372 |
* side effects - Check all connections for a pending kline against the |
373 |
* client, exit the client if a kline matches. |
374 |
*/ |
375 |
void |
376 |
check_conf_klines(void) |
377 |
{ |
378 |
struct Client *client_p = NULL; /* current local client_p being examined */ |
379 |
struct AccessItem *aconf = NULL; |
380 |
struct ConfItem *conf = NULL; |
381 |
dlink_node *ptr, *next_ptr; |
382 |
|
383 |
DLINK_FOREACH_SAFE(ptr, next_ptr, local_client_list.head) |
384 |
{ |
385 |
client_p = ptr->data; |
386 |
|
387 |
/* If a client is already being exited |
388 |
*/ |
389 |
if (IsDead(client_p) || !IsClient(client_p)) |
390 |
continue; |
391 |
|
392 |
/* if there is a returned struct ConfItem then kill it */ |
393 |
if ((aconf = find_dline_conf(&client_p->localClient->ip, |
394 |
client_p->localClient->aftype)) != NULL) |
395 |
{ |
396 |
if (aconf->status & CONF_EXEMPTDLINE) |
397 |
continue; |
398 |
|
399 |
conf = aconf->conf_ptr; |
400 |
ban_them(client_p, conf); |
401 |
continue; /* and go examine next fd/client_p */ |
402 |
} |
403 |
|
404 |
if (ConfigFileEntry.glines && (aconf = find_gline(client_p)) != NULL) |
405 |
{ |
406 |
if (IsExemptKline(client_p) || IsExemptGline(client_p)) |
407 |
{ |
408 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
409 |
"GLINE over-ruled for %s, client is %cline_exempt", |
410 |
get_client_name(client_p, HIDE_IP), |
411 |
IsExemptKline(client_p) ? 'k' : 'g'); |
412 |
continue; |
413 |
} |
414 |
|
415 |
conf = aconf->conf_ptr; |
416 |
ban_them(client_p, conf); |
417 |
/* and go examine next fd/client_p */ |
418 |
continue; |
419 |
} |
420 |
|
421 |
if ((aconf = find_kill(client_p)) != NULL) |
422 |
{ |
423 |
|
424 |
/* if there is a returned struct AccessItem.. then kill it */ |
425 |
if (IsExemptKline(client_p)) |
426 |
{ |
427 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
428 |
"KLINE over-ruled for %s, client is kline_exempt", |
429 |
get_client_name(client_p, HIDE_IP)); |
430 |
continue; |
431 |
} |
432 |
|
433 |
conf = aconf->conf_ptr; |
434 |
ban_them(client_p, conf); |
435 |
continue; |
436 |
} |
437 |
|
438 |
/* if there is a returned struct MatchItem then kill it */ |
439 |
if ((conf = find_matching_name_conf(XLINE_TYPE, client_p->info, |
440 |
NULL, NULL, 0)) != NULL || |
441 |
(conf = find_matching_name_conf(RXLINE_TYPE, client_p->info, |
442 |
NULL, NULL, 0)) != NULL) |
443 |
{ |
444 |
ban_them(client_p, conf); |
445 |
continue; |
446 |
} |
447 |
} |
448 |
|
449 |
/* also check the unknowns list for new dlines */ |
450 |
DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head) |
451 |
{ |
452 |
client_p = ptr->data; |
453 |
|
454 |
if ((aconf = find_dline_conf(&client_p->localClient->ip, |
455 |
client_p->localClient->aftype))) |
456 |
{ |
457 |
if (aconf->status & CONF_EXEMPTDLINE) |
458 |
continue; |
459 |
|
460 |
exit_client(client_p, &me, "D-lined"); |
461 |
} |
462 |
} |
463 |
} |
464 |
|
465 |
/* |
466 |
* ban_them |
467 |
* |
468 |
* inputs - pointer to client to ban |
469 |
* - pointer to ConfItem |
470 |
* output - NONE |
471 |
* side effects - given client_p is banned |
472 |
*/ |
473 |
static void |
474 |
ban_them(struct Client *client_p, struct ConfItem *conf) |
475 |
{ |
476 |
const char *user_reason = NULL; /* What is sent to user */ |
477 |
const char *channel_reason = NULL; /* What is sent to channel */ |
478 |
struct AccessItem *aconf = NULL; |
479 |
struct MatchItem *xconf = NULL; |
480 |
const char *type_string = NULL; |
481 |
const char dline_string[] = "D-line"; |
482 |
const char kline_string[] = "K-line"; |
483 |
const char gline_string[] = "G-line"; |
484 |
const char xline_string[] = "X-line"; |
485 |
|
486 |
switch (conf->type) |
487 |
{ |
488 |
case RKLINE_TYPE: |
489 |
case KLINE_TYPE: |
490 |
type_string = kline_string; |
491 |
aconf = &conf->conf.AccessItem; |
492 |
break; |
493 |
case DLINE_TYPE: |
494 |
type_string = dline_string; |
495 |
aconf = &conf->conf.AccessItem; |
496 |
break; |
497 |
case GLINE_TYPE: |
498 |
type_string = gline_string; |
499 |
aconf = &conf->conf.AccessItem; |
500 |
break; |
501 |
case RXLINE_TYPE: |
502 |
case XLINE_TYPE: |
503 |
type_string = xline_string; |
504 |
xconf = &conf->conf.MatchItem; |
505 |
++xconf->count; |
506 |
break; |
507 |
default: |
508 |
assert(0); |
509 |
break; |
510 |
} |
511 |
|
512 |
if (ConfigFileEntry.kline_with_reason) |
513 |
{ |
514 |
if (aconf != NULL) |
515 |
user_reason = aconf->reason ? aconf->reason : type_string; |
516 |
if (xconf != NULL) |
517 |
user_reason = xconf->reason ? xconf->reason : type_string; |
518 |
} |
519 |
else |
520 |
user_reason = type_string; |
521 |
|
522 |
if (ConfigFileEntry.kline_reason != NULL) |
523 |
channel_reason = ConfigFileEntry.kline_reason; |
524 |
else |
525 |
channel_reason = user_reason; |
526 |
|
527 |
sendto_realops_flags(UMODE_ALL, L_ALL, "%s active for %s", |
528 |
type_string, get_client_name(client_p, HIDE_IP)); |
529 |
|
530 |
if (IsClient(client_p)) |
531 |
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP), |
532 |
me.name, client_p->name, user_reason); |
533 |
|
534 |
exit_client(client_p, &me, channel_reason); |
535 |
} |
536 |
|
537 |
/* update_client_exit_stats() |
538 |
* |
539 |
* input - pointer to client |
540 |
* output - NONE |
541 |
* side effects - |
542 |
*/ |
543 |
static void |
544 |
update_client_exit_stats(struct Client *client_p) |
545 |
{ |
546 |
if (IsServer(client_p)) |
547 |
{ |
548 |
sendto_realops_flags(UMODE_EXTERNAL, L_ALL, |
549 |
"Server %s split from %s", |
550 |
client_p->name, client_p->servptr->name); |
551 |
} |
552 |
else if (IsClient(client_p)) |
553 |
{ |
554 |
--Count.total; |
555 |
if (IsOper(client_p)) |
556 |
--Count.oper; |
557 |
if (IsInvisible(client_p)) |
558 |
--Count.invisi; |
559 |
} |
560 |
|
561 |
if (splitchecking && !splitmode) |
562 |
check_splitmode(NULL); |
563 |
} |
564 |
|
565 |
/* find_person() |
566 |
* |
567 |
* inputs - pointer to name |
568 |
* output - return client pointer |
569 |
* side effects - find person by (nick)name |
570 |
*/ |
571 |
/* XXX - ugly wrapper */ |
572 |
struct Client * |
573 |
find_person(const struct Client *client_p, const char *name) |
574 |
{ |
575 |
struct Client *c2ptr; |
576 |
|
577 |
if (IsDigit(*name)) |
578 |
{ |
579 |
if ((c2ptr = hash_find_id(name)) != NULL) |
580 |
{ |
581 |
/* invisible users shall not be found by UID guessing */ |
582 |
if (IsInvisible(c2ptr) && !IsServer(client_p)) |
583 |
c2ptr = NULL; |
584 |
} |
585 |
} |
586 |
else |
587 |
c2ptr = find_client(name); |
588 |
|
589 |
return ((c2ptr != NULL && IsClient(c2ptr)) ? c2ptr : NULL); |
590 |
} |
591 |
|
592 |
/* |
593 |
* find_chasing - find the client structure for a nick name (user) |
594 |
* using history mechanism if necessary. If the client is not found, |
595 |
* an error message (NO SUCH NICK) is generated. If the client was found |
596 |
* through the history, chasing will be 1 and otherwise 0. |
597 |
*/ |
598 |
struct Client * |
599 |
find_chasing(struct Client *client_p, struct Client *source_p, const char *user, int *chasing) |
600 |
{ |
601 |
struct Client *who = find_person(client_p, user); |
602 |
|
603 |
if (chasing) |
604 |
*chasing = 0; |
605 |
|
606 |
if (who) |
607 |
return who; |
608 |
|
609 |
if (IsDigit(*user)) |
610 |
return NULL; |
611 |
|
612 |
if ((who = get_history(user, |
613 |
(time_t)ConfigFileEntry.kill_chase_time_limit)) |
614 |
== NULL) |
615 |
{ |
616 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
617 |
me.name, source_p->name, user); |
618 |
return NULL; |
619 |
} |
620 |
|
621 |
if (chasing) |
622 |
*chasing = 1; |
623 |
|
624 |
return who; |
625 |
} |
626 |
|
627 |
/* |
628 |
* get_client_name - Return the name of the client |
629 |
* for various tracking and |
630 |
* admin purposes. The main purpose of this function is to |
631 |
* return the "socket host" name of the client, if that |
632 |
* differs from the advertised name (other than case). |
633 |
* But, this can be used to any client structure. |
634 |
* |
635 |
* NOTE 1: |
636 |
* Watch out the allocation of "nbuf", if either source_p->name |
637 |
* or source_p->sockhost gets changed into pointers instead of |
638 |
* directly allocated within the structure... |
639 |
* |
640 |
* NOTE 2: |
641 |
* Function return either a pointer to the structure (source_p) or |
642 |
* to internal buffer (nbuf). *NEVER* use the returned pointer |
643 |
* to modify what it points!!! |
644 |
*/ |
645 |
const char * |
646 |
get_client_name(struct Client *client, int showip) |
647 |
{ |
648 |
static char nbuf[HOSTLEN * 2 + USERLEN + 5]; |
649 |
|
650 |
assert(client != NULL); |
651 |
|
652 |
if (irccmp(client->name, client->host) == 0) |
653 |
return client->name; |
654 |
|
655 |
if (ConfigServerHide.hide_server_ips) |
656 |
if (IsServer(client) || IsConnecting(client) || IsHandshake(client)) |
657 |
showip = MASK_IP; |
658 |
|
659 |
if (ConfigFileEntry.hide_spoof_ips) |
660 |
if (showip == SHOW_IP && IsIPSpoof(client)) |
661 |
showip = MASK_IP; |
662 |
|
663 |
/* And finally, let's get the host information, ip or name */ |
664 |
switch (showip) |
665 |
{ |
666 |
case SHOW_IP: |
667 |
if (MyConnect(client)) |
668 |
{ |
669 |
ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username, |
670 |
client->sockhost); |
671 |
break; |
672 |
} |
673 |
case MASK_IP: |
674 |
ircsprintf(nbuf, "%s[%s@255.255.255.255]", client->name, |
675 |
client->username); |
676 |
break; |
677 |
default: |
678 |
ircsprintf(nbuf, "%s[%s@%s]", client->name, client->username, |
679 |
client->host); |
680 |
} |
681 |
|
682 |
return nbuf; |
683 |
} |
684 |
|
685 |
void |
686 |
free_exited_clients(void) |
687 |
{ |
688 |
dlink_node *ptr, *next; |
689 |
struct Client *target_p; |
690 |
|
691 |
DLINK_FOREACH_SAFE(ptr, next, dead_list.head) |
692 |
{ |
693 |
target_p = ptr->data; |
694 |
|
695 |
if (ptr->data == NULL) |
696 |
{ |
697 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
698 |
"Warning: null client on dead_list!"); |
699 |
dlinkDelete(ptr, &dead_list); |
700 |
free_dlink_node(ptr); |
701 |
continue; |
702 |
} |
703 |
|
704 |
free_client(target_p); |
705 |
dlinkDelete(ptr, &dead_list); |
706 |
free_dlink_node(ptr); |
707 |
} |
708 |
} |
709 |
|
710 |
/* |
711 |
* Exit one client, local or remote. Assuming all dependents have |
712 |
* been already removed, and socket closed for local client. |
713 |
* |
714 |
* The only messages generated are QUITs on channels. |
715 |
*/ |
716 |
static void |
717 |
exit_one_client(struct Client *source_p, const char *quitmsg) |
718 |
{ |
719 |
dlink_node *lp = NULL, *next_lp = NULL; |
720 |
|
721 |
assert(!IsMe(source_p)); |
722 |
|
723 |
if (IsServer(source_p)) |
724 |
{ |
725 |
dlinkDelete(&source_p->lnode, &source_p->servptr->serv->servers); |
726 |
|
727 |
if ((lp = dlinkFindDelete(&global_serv_list, source_p)) != NULL) |
728 |
free_dlink_node(lp); |
729 |
|
730 |
if (!MyConnect(source_p)) |
731 |
{ |
732 |
source_p->from->serv->dep_servers--; |
733 |
assert(source_p->from->serv->dep_servers > 0); |
734 |
} |
735 |
} |
736 |
else if (IsClient(source_p)) |
737 |
{ |
738 |
if (source_p->servptr->serv != NULL) |
739 |
dlinkDelete(&source_p->lnode, &source_p->servptr->serv->users); |
740 |
|
741 |
/* |
742 |
* If a person is on a channel, send a QUIT notice |
743 |
* to every client (person) on the same channel (so |
744 |
* that the client can show the "**signoff" message). |
745 |
* (Note: The notice is to the local clients *only*) |
746 |
*/ |
747 |
sendto_common_channels_local(source_p, 0, ":%s!%s@%s QUIT :%s", |
748 |
source_p->name, source_p->username, |
749 |
source_p->host, quitmsg); |
750 |
DLINK_FOREACH_SAFE(lp, next_lp, source_p->channel.head) |
751 |
remove_user_from_channel(lp->data); |
752 |
|
753 |
add_history(source_p, 0); |
754 |
off_history(source_p); |
755 |
|
756 |
assert(source_p->whowas.head == NULL); |
757 |
assert(source_p->whowas.tail == NULL); |
758 |
|
759 |
/* Do local vs. remote processing here */ |
760 |
if (MyConnect(source_p)) |
761 |
{ |
762 |
/* Clean up invitefield */ |
763 |
DLINK_FOREACH_SAFE(lp, next_lp, source_p->localClient->invited.head) |
764 |
del_invite(lp->data, source_p); |
765 |
|
766 |
/* Clean up allow lists */ |
767 |
del_all_accepts(source_p); |
768 |
} |
769 |
else |
770 |
{ |
771 |
source_p->from->serv->dep_users--; |
772 |
assert(source_p->from->serv->dep_users >= 0); |
773 |
} |
774 |
} |
775 |
|
776 |
/* Remove source_p from the client lists */ |
777 |
if (HasID(source_p)) |
778 |
hash_del_id(source_p); |
779 |
if (source_p->name[0]) |
780 |
hash_del_client(source_p); |
781 |
|
782 |
hash_check_watch(source_p, RPL_LOGOFF); |
783 |
|
784 |
if (IsUserHostIp(source_p)) |
785 |
delete_user_host(source_p->username, source_p->host, !MyConnect(source_p)); |
786 |
|
787 |
/* remove from global client list |
788 |
* NOTE: source_p->node.next cannot be NULL if the client is added |
789 |
* to global_client_list (there is always &me at its end) |
790 |
*/ |
791 |
if (source_p != NULL && source_p->node.next != NULL) |
792 |
dlinkDelete(&source_p->node, &global_client_list); |
793 |
|
794 |
update_client_exit_stats(source_p); |
795 |
|
796 |
/* Check to see if the client isn't already on the dead list */ |
797 |
assert(dlinkFind(&dead_list, source_p) == NULL); |
798 |
|
799 |
/* add to dead client dlist */ |
800 |
SetDead(source_p); |
801 |
dlinkAdd(source_p, make_dlink_node(), &dead_list); |
802 |
} |
803 |
|
804 |
/* Recursively send QUITs and SQUITs for source_p and all its dependent clients |
805 |
* and servers to those servers that need them. A server needs the client |
806 |
* QUITs if it can't figure them out from the SQUIT (ie pre-TS4) or if it |
807 |
* isn't getting the SQUIT because of @#(*&@)# hostmasking. With TS4, once |
808 |
* a link gets a SQUIT, it doesn't need any QUIT/SQUITs for clients depending |
809 |
* on that one -orabidoo |
810 |
* |
811 |
* This is now called on each local server -adx |
812 |
*/ |
813 |
static void |
814 |
recurse_send_quits(struct Client *original_source_p, struct Client *source_p, |
815 |
struct Client *from, struct Client *to, const char *comment, |
816 |
const char *splitstr, const char *myname) |
817 |
{ |
818 |
dlink_node *ptr, *next; |
819 |
struct Client *target_p; |
820 |
int hidden = match(myname, source_p->name); |
821 |
|
822 |
assert(to != source_p); /* should be already removed from serv_list */ |
823 |
|
824 |
/* If this server can handle quit storm (QS) removal |
825 |
* of dependents, just send the SQUIT |
826 |
* |
827 |
* Always check *all* dependent servers if some of them are |
828 |
* hidden behind fakename. If so, send out the QUITs -adx |
829 |
*/ |
830 |
if (hidden || !IsCapable(to, CAP_QS)) |
831 |
DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head) |
832 |
{ |
833 |
target_p = ptr->data; |
834 |
sendto_one(to, ":%s QUIT :%s", target_p->name, splitstr); |
835 |
} |
836 |
|
837 |
DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head) |
838 |
recurse_send_quits(original_source_p, ptr->data, from, to, |
839 |
comment, splitstr, myname); |
840 |
|
841 |
if (!hidden && ((source_p == original_source_p && to != from) || |
842 |
!IsCapable(to, CAP_QS))) |
843 |
{ |
844 |
/* don't use a prefix here - we have to be 100% sure the message |
845 |
* will be accepted without Unknown prefix etc.. */ |
846 |
sendto_one(to, "SQUIT %s :%s", ID_or_name(source_p, to), comment); |
847 |
} |
848 |
} |
849 |
|
850 |
/* |
851 |
* Remove all clients that depend on source_p; assumes all (S)QUITs have |
852 |
* already been sent. we make sure to exit a server's dependent clients |
853 |
* and servers before the server itself; exit_one_client takes care of |
854 |
* actually removing things off llists. tweaked from +CSr31 -orabidoo |
855 |
*/ |
856 |
static void |
857 |
recurse_remove_clients(struct Client *source_p, const char *quitmsg) |
858 |
{ |
859 |
dlink_node *ptr, *next; |
860 |
|
861 |
DLINK_FOREACH_SAFE(ptr, next, source_p->serv->users.head) |
862 |
exit_one_client(ptr->data, quitmsg); |
863 |
|
864 |
DLINK_FOREACH_SAFE(ptr, next, source_p->serv->servers.head) |
865 |
{ |
866 |
recurse_remove_clients(ptr->data, quitmsg); |
867 |
exit_one_client(ptr->data, quitmsg); |
868 |
} |
869 |
|
870 |
assert(source_p->serv->dep_servers == 1); |
871 |
assert(source_p->serv->dep_users == 0); |
872 |
} |
873 |
|
874 |
/* |
875 |
** Remove *everything* that depends on source_p, from all lists, and sending |
876 |
** all necessary QUITs and SQUITs. source_p itself is still on the lists, |
877 |
** and its SQUITs have been sent except for the upstream one -orabidoo |
878 |
*/ |
879 |
static void |
880 |
remove_dependents(struct Client *source_p, struct Client *from, |
881 |
const char *comment, const char *splitstr) |
882 |
{ |
883 |
struct Client *to; |
884 |
struct ConfItem *conf; |
885 |
struct AccessItem *aconf; |
886 |
static char myname[HOSTLEN+1]; |
887 |
dlink_node *ptr; |
888 |
|
889 |
DLINK_FOREACH(ptr, serv_list.head) |
890 |
{ |
891 |
to = ptr->data; |
892 |
|
893 |
if ((conf = to->serv->sconf) != NULL) |
894 |
{ |
895 |
aconf = &conf->conf.AccessItem; |
896 |
strlcpy(myname, my_name_for_link(aconf), sizeof(myname)); |
897 |
} |
898 |
else |
899 |
strlcpy(myname, me.name, sizeof(myname)); |
900 |
recurse_send_quits(source_p, source_p, from, to, |
901 |
comment, splitstr, myname); |
902 |
} |
903 |
|
904 |
recurse_remove_clients(source_p, splitstr); |
905 |
} |
906 |
|
907 |
/* |
908 |
* exit_client - exit a client of any type. Generally, you can use |
909 |
* this on any struct Client, regardless of its state. |
910 |
* |
911 |
* Note, you shouldn't exit remote _users_ without first doing |
912 |
* SetKilled and propagating a kill or similar message. However, |
913 |
* it is perfectly correct to call exit_client to force a _server_ |
914 |
* quit (either local or remote one). |
915 |
* |
916 |
* inputs: - a client pointer that is going to be exited |
917 |
* - for servers, the second argument is a pointer to who |
918 |
* is firing the server. This side won't get any generated |
919 |
* messages. NEVER NULL! |
920 |
* output: none |
921 |
* side effects: the client is delinked from all lists, disconnected, |
922 |
* and the rest of IRC network is notified of the exit. |
923 |
* Client memory is scheduled to be freed |
924 |
*/ |
925 |
void |
926 |
exit_client(struct Client *source_p, struct Client *from, const char *comment) |
927 |
{ |
928 |
dlink_node *m; |
929 |
|
930 |
if (MyConnect(source_p)) |
931 |
{ |
932 |
/* DO NOT REMOVE. exit_client can be called twice after a failed |
933 |
* read/write. |
934 |
*/ |
935 |
if (IsClosing(source_p)) |
936 |
return; |
937 |
|
938 |
SetClosing(source_p); |
939 |
|
940 |
if (IsIpHash(source_p)) |
941 |
remove_one_ip(&source_p->localClient->ip); |
942 |
|
943 |
delete_auth(source_p); |
944 |
|
945 |
/* This source_p could have status of one of STAT_UNKNOWN, STAT_CONNECTING |
946 |
* STAT_HANDSHAKE or STAT_UNKNOWN |
947 |
* all of which are lumped together into unknown_list |
948 |
* |
949 |
* In all above cases IsRegistered() will not be true. |
950 |
*/ |
951 |
if (!IsRegistered(source_p)) |
952 |
{ |
953 |
if ((m = dlinkFindDelete(&unknown_list, source_p)) != NULL) |
954 |
free_dlink_node(m); |
955 |
} |
956 |
else if (IsClient(source_p)) |
957 |
{ |
958 |
--Count.local; |
959 |
|
960 |
if (IsOper(source_p)) |
961 |
{ |
962 |
if ((m = dlinkFindDelete(&oper_list, source_p)) != NULL) |
963 |
free_dlink_node(m); |
964 |
} |
965 |
|
966 |
dlinkDelete(&source_p->localClient->lclient_node, &local_client_list); |
967 |
if (source_p->localClient->list_task != NULL) |
968 |
free_list_task(source_p->localClient->list_task, source_p); |
969 |
hash_del_watch_list(source_p); |
970 |
sendto_realops_flags(UMODE_CCONN, L_ALL, "Client exiting: %s (%s@%s) [%s] [%s]", |
971 |
source_p->name, source_p->username, source_p->host, comment, |
972 |
ConfigFileEntry.hide_spoof_ips && IsIPSpoof(source_p) ? |
973 |
"255.255.255.255" : source_p->sockhost); |
974 |
} |
975 |
|
976 |
/* As soon as a client is known to be a server of some sort |
977 |
* it has to be put on the serv_list, or SJOIN's to this new server |
978 |
* from the connect burst will not be seen. |
979 |
*/ |
980 |
if (IsServer(source_p) || IsConnecting(source_p) || IsHandshake(source_p)) |
981 |
{ |
982 |
if ((m = dlinkFindDelete(&serv_list, source_p)) != NULL) |
983 |
{ |
984 |
free_dlink_node(m); |
985 |
unset_chcap_usage_counts(source_p); |
986 |
} |
987 |
|
988 |
if (IsServer(source_p)) |
989 |
--Count.myserver; |
990 |
} |
991 |
|
992 |
log_user_exit(source_p); |
993 |
|
994 |
if (!IsDead(source_p)) |
995 |
{ |
996 |
if (IsServer(source_p)) |
997 |
{ |
998 |
/* for them, we are exiting the network */ |
999 |
sendto_one(source_p, ":%s SQUIT %s :%s", |
1000 |
ID_or_name(from, source_p), me.name, comment); |
1001 |
} |
1002 |
|
1003 |
sendto_one(source_p, "ERROR :Closing Link: %s (%s)", |
1004 |
source_p->host, comment); |
1005 |
} |
1006 |
|
1007 |
/* |
1008 |
** Currently only server connections can have |
1009 |
** depending remote clients here, but it does no |
1010 |
** harm to check for all local clients. In |
1011 |
** future some other clients than servers might |
1012 |
** have remotes too... |
1013 |
** |
1014 |
** Close the Client connection first and mark it |
1015 |
** so that no messages are attempted to send to it. |
1016 |
** Remember it makes source_p->from == NULL. |
1017 |
*/ |
1018 |
close_connection(source_p); |
1019 |
} |
1020 |
|
1021 |
if (IsServer(source_p)) |
1022 |
{ |
1023 |
char splitstr[HOSTLEN + HOSTLEN + 2]; |
1024 |
|
1025 |
/* This shouldn't ever happen */ |
1026 |
assert(source_p->serv != NULL && source_p->servptr != NULL); |
1027 |
|
1028 |
if (ConfigServerHide.hide_servers) |
1029 |
/* |
1030 |
* set netsplit message to "*.net *.split" to still show |
1031 |
* that its a split, but hide the servers splitting |
1032 |
*/ |
1033 |
strcpy(splitstr, "*.net *.split"); |
1034 |
else |
1035 |
snprintf(splitstr, sizeof(splitstr), "%s %s", |
1036 |
source_p->servptr->name, source_p->name); |
1037 |
|
1038 |
remove_dependents(source_p, from->from, comment, splitstr); |
1039 |
|
1040 |
if (source_p->servptr == &me) |
1041 |
{ |
1042 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
1043 |
"%s was connected for %d seconds. %llu/%llu sendK/recvK.", |
1044 |
source_p->name, (int)(CurrentTime - source_p->firsttime), |
1045 |
source_p->localClient->send.bytes >> 10, |
1046 |
source_p->localClient->recv.bytes >> 10); |
1047 |
ilog(L_NOTICE, "%s was connected for %d seconds. %llu/%llu sendK/recvK.", |
1048 |
source_p->name, (int)(CurrentTime - source_p->firsttime), |
1049 |
source_p->localClient->send.bytes >> 10, |
1050 |
source_p->localClient->recv.bytes >> 10); |
1051 |
} |
1052 |
} |
1053 |
else if (IsClient(source_p) && !IsKilled(source_p)) |
1054 |
{ |
1055 |
sendto_server(NULL, source_p, NULL, CAP_TS6, NOCAPS, |
1056 |
":%s QUIT :%s", ID(source_p), comment); |
1057 |
sendto_server(NULL, source_p, NULL, NOCAPS, CAP_TS6, |
1058 |
":%s QUIT :%s", source_p->name, comment); |
1059 |
} |
1060 |
|
1061 |
/* The client *better* be off all of the lists */ |
1062 |
assert(dlinkFind(&unknown_list, source_p) == NULL); |
1063 |
assert(dlinkFind(&local_client_list, source_p) == NULL); |
1064 |
assert(dlinkFind(&serv_list, source_p) == NULL); |
1065 |
assert(dlinkFind(&oper_list, source_p) == NULL); |
1066 |
|
1067 |
exit_one_client(source_p, comment); |
1068 |
} |
1069 |
|
1070 |
/* |
1071 |
* close_connection |
1072 |
* Close the physical connection. This function must make |
1073 |
* MyConnect(client_p) == FALSE, and set client_p->from == NULL. |
1074 |
*/ |
1075 |
static void |
1076 |
close_connection(struct Client *client_p) |
1077 |
{ |
1078 |
struct ConfItem *conf; |
1079 |
struct AccessItem *aconf; |
1080 |
struct ClassItem *aclass; |
1081 |
|
1082 |
assert(NULL != client_p); |
1083 |
|
1084 |
if (IsServer(client_p)) |
1085 |
{ |
1086 |
ServerStats->is_sv++; |
1087 |
ServerStats->is_sbs += client_p->localClient->send.bytes; |
1088 |
ServerStats->is_sbr += client_p->localClient->recv.bytes; |
1089 |
ServerStats->is_sti += CurrentTime - client_p->firsttime; |
1090 |
|
1091 |
/* XXX Does this even make any sense at all anymore? |
1092 |
* scheduling a 'quick' reconnect could cause a pile of |
1093 |
* nick collides under TSora protocol... -db |
1094 |
*/ |
1095 |
/* |
1096 |
* If the connection has been up for a long amount of time, schedule |
1097 |
* a 'quick' reconnect, else reset the next-connect cycle. |
1098 |
*/ |
1099 |
if ((conf = find_exact_name_conf(SERVER_TYPE, |
1100 |
client_p->name, client_p->username, |
1101 |
client_p->host))) |
1102 |
{ |
1103 |
/* |
1104 |
* Reschedule a faster reconnect, if this was a automatically |
1105 |
* connected configuration entry. (Note that if we have had |
1106 |
* a rehash in between, the status has been changed to |
1107 |
* CONF_ILLEGAL). But only do this if it was a "good" link. |
1108 |
*/ |
1109 |
aconf = &conf->conf.AccessItem; |
1110 |
aclass = &((struct ConfItem *)aconf->class_ptr)->conf.ClassItem; |
1111 |
aconf->hold = time(NULL); |
1112 |
aconf->hold += (aconf->hold - client_p->since > HANGONGOODLINK) ? |
1113 |
HANGONRETRYDELAY : ConFreq(aclass); |
1114 |
} |
1115 |
} |
1116 |
else if (IsClient(client_p)) |
1117 |
{ |
1118 |
ServerStats->is_cl++; |
1119 |
ServerStats->is_cbs += client_p->localClient->send.bytes; |
1120 |
ServerStats->is_cbr += client_p->localClient->recv.bytes; |
1121 |
ServerStats->is_cti += CurrentTime - client_p->firsttime; |
1122 |
} |
1123 |
else |
1124 |
ServerStats->is_ni++; |
1125 |
|
1126 |
if (!IsDead(client_p)) |
1127 |
{ |
1128 |
/* attempt to flush any pending dbufs. Evil, but .. -- adrian */ |
1129 |
/* there is still a chance that we might send data to this socket |
1130 |
* even if it is marked as blocked (COMM_SELECT_READ handler is called |
1131 |
* before COMM_SELECT_WRITE). Let's try, nothing to lose.. -adx |
1132 |
*/ |
1133 |
ClearSendqBlocked(client_p); |
1134 |
send_queued_write(client_p); |
1135 |
} |
1136 |
|
1137 |
#ifdef HAVE_LIBCRYPTO |
1138 |
if (client_p->localClient->fd.ssl) |
1139 |
{ |
1140 |
SSL_set_shutdown(client_p->localClient->fd.ssl, SSL_RECEIVED_SHUTDOWN); |
1141 |
|
1142 |
if (!SSL_shutdown(client_p->localClient->fd.ssl)) |
1143 |
SSL_shutdown(client_p->localClient->fd.ssl); |
1144 |
} |
1145 |
#endif |
1146 |
if (client_p->localClient->fd.flags.open) |
1147 |
fd_close(&client_p->localClient->fd); |
1148 |
|
1149 |
if (HasServlink(client_p)) |
1150 |
{ |
1151 |
if (client_p->localClient->ctrlfd.flags.open) |
1152 |
fd_close(&client_p->localClient->ctrlfd); |
1153 |
} |
1154 |
|
1155 |
dbuf_clear(&client_p->localClient->buf_sendq); |
1156 |
dbuf_clear(&client_p->localClient->buf_recvq); |
1157 |
|
1158 |
MyFree(client_p->localClient->passwd); |
1159 |
detach_confs(client_p); |
1160 |
client_p->from = NULL; /* ...this should catch them! >:) --msa */ |
1161 |
} |
1162 |
|
1163 |
/* |
1164 |
* report_error - report an error from an errno. |
1165 |
* Record error to log and also send a copy to all *LOCAL* opers online. |
1166 |
* |
1167 |
* text is a *format* string for outputing error. It must |
1168 |
* contain only two '%s', the first will be replaced |
1169 |
* by the sockhost from the client_p, and the latter will |
1170 |
* be taken from sys_errlist[errno]. |
1171 |
* |
1172 |
* client_p if not NULL, is the *LOCAL* client associated with |
1173 |
* the error. |
1174 |
* |
1175 |
* Cannot use perror() within daemon. stderr is closed in |
1176 |
* ircd and cannot be used. And, worse yet, it might have |
1177 |
* been reassigned to a normal connection... |
1178 |
* |
1179 |
* Actually stderr is still there IFF ircd was run with -s --Rodder |
1180 |
*/ |
1181 |
void |
1182 |
report_error(int level, const char *text, const char *who, int error) |
1183 |
{ |
1184 |
who = (who != NULL) ? who : ""; |
1185 |
|
1186 |
sendto_realops_flags(UMODE_DEBUG, level, text, who, strerror(error)); |
1187 |
log_oper_action(LOG_IOERR_TYPE, NULL, "%s %s %s\n", who, text, strerror(error)); |
1188 |
ilog(L_ERROR, text, who, strerror(error)); |
1189 |
} |
1190 |
|
1191 |
/* |
1192 |
* dead_link_on_write - report a write error if not already dead, |
1193 |
* mark it as dead then exit it |
1194 |
*/ |
1195 |
void |
1196 |
dead_link_on_write(struct Client *client_p, int ierrno) |
1197 |
{ |
1198 |
dlink_node *ptr; |
1199 |
|
1200 |
if (IsDefunct(client_p)) |
1201 |
return; |
1202 |
|
1203 |
dbuf_clear(&client_p->localClient->buf_recvq); |
1204 |
dbuf_clear(&client_p->localClient->buf_sendq); |
1205 |
|
1206 |
assert(dlinkFind(&abort_list, client_p) == NULL); |
1207 |
ptr = make_dlink_node(); |
1208 |
/* don't let exit_aborted_clients() finish yet */ |
1209 |
dlinkAddTail(client_p, ptr, &abort_list); |
1210 |
|
1211 |
if (eac_next == NULL) |
1212 |
eac_next = ptr; |
1213 |
|
1214 |
SetDead(client_p); /* You are dead my friend */ |
1215 |
} |
1216 |
|
1217 |
/* |
1218 |
* dead_link_on_read - report a read error if not already dead, |
1219 |
* mark it as dead then exit it |
1220 |
*/ |
1221 |
void |
1222 |
dead_link_on_read(struct Client *client_p, int error) |
1223 |
{ |
1224 |
char errmsg[255]; |
1225 |
int current_error; |
1226 |
|
1227 |
if (IsDefunct(client_p)) |
1228 |
return; |
1229 |
|
1230 |
dbuf_clear(&client_p->localClient->buf_recvq); |
1231 |
dbuf_clear(&client_p->localClient->buf_sendq); |
1232 |
|
1233 |
current_error = get_sockerr(client_p->localClient->fd.fd); |
1234 |
|
1235 |
if (IsServer(client_p) || IsHandshake(client_p)) |
1236 |
{ |
1237 |
int connected = CurrentTime - client_p->firsttime; |
1238 |
|
1239 |
if (error == 0) |
1240 |
{ |
1241 |
/* Admins get the real IP */ |
1242 |
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1243 |
"Server %s closed the connection", |
1244 |
get_client_name(client_p, SHOW_IP)); |
1245 |
|
1246 |
/* Opers get a masked IP */ |
1247 |
sendto_realops_flags(UMODE_ALL, L_OPER, |
1248 |
"Server %s closed the connection", |
1249 |
get_client_name(client_p, MASK_IP)); |
1250 |
|
1251 |
ilog(L_NOTICE, "Server %s closed the connection", |
1252 |
get_client_name(client_p, SHOW_IP)); |
1253 |
} |
1254 |
else |
1255 |
{ |
1256 |
report_error(L_ADMIN, "Lost connection to %s: %d", |
1257 |
get_client_name(client_p, SHOW_IP), current_error); |
1258 |
report_error(L_OPER, "Lost connection to %s: %d", |
1259 |
get_client_name(client_p, MASK_IP), current_error); |
1260 |
} |
1261 |
|
1262 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
1263 |
"%s had been connected for %d day%s, %2d:%02d:%02d", |
1264 |
client_p->name, connected/86400, |
1265 |
(connected/86400 == 1) ? "" : "s", |
1266 |
(connected % 86400) / 3600, (connected % 3600) / 60, |
1267 |
connected % 60); |
1268 |
} |
1269 |
|
1270 |
if (error == 0) |
1271 |
strlcpy(errmsg, "Remote host closed the connection", |
1272 |
sizeof(errmsg)); |
1273 |
else |
1274 |
ircsprintf(errmsg, "Read error: %s", |
1275 |
strerror(current_error)); |
1276 |
|
1277 |
exit_client(client_p, &me, errmsg); |
1278 |
} |
1279 |
|
1280 |
void |
1281 |
exit_aborted_clients(void) |
1282 |
{ |
1283 |
dlink_node *ptr; |
1284 |
struct Client *target_p; |
1285 |
const char *notice; |
1286 |
|
1287 |
DLINK_FOREACH_SAFE(ptr, eac_next, abort_list.head) |
1288 |
{ |
1289 |
target_p = ptr->data; |
1290 |
eac_next = ptr->next; |
1291 |
|
1292 |
if (target_p == NULL) |
1293 |
{ |
1294 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
1295 |
"Warning: null client on abort_list!"); |
1296 |
dlinkDelete(ptr, &abort_list); |
1297 |
free_dlink_node(ptr); |
1298 |
continue; |
1299 |
} |
1300 |
|
1301 |
dlinkDelete(ptr, &abort_list); |
1302 |
|
1303 |
if (IsSendQExceeded(target_p)) |
1304 |
notice = "Max SendQ exceeded"; |
1305 |
else |
1306 |
notice = "Write error: connection closed"; |
1307 |
|
1308 |
exit_client(target_p, &me, notice); |
1309 |
free_dlink_node(ptr); |
1310 |
} |
1311 |
} |
1312 |
|
1313 |
/* |
1314 |
* accept processing, this adds a form of "caller ID" to ircd |
1315 |
* |
1316 |
* If a client puts themselves into "caller ID only" mode, |
1317 |
* only clients that match a client pointer they have put on |
1318 |
* the accept list will be allowed to message them. |
1319 |
* |
1320 |
* Diane Bruce, "Dianora" db@db.net |
1321 |
*/ |
1322 |
|
1323 |
void |
1324 |
del_accept(struct Accept *acceptvar, struct Client *client_p) |
1325 |
{ |
1326 |
dlinkDelete(&acceptvar->node, &client_p->localClient->acceptlist); |
1327 |
|
1328 |
MyFree(acceptvar->nick); |
1329 |
MyFree(acceptvar->user); |
1330 |
MyFree(acceptvar->host); |
1331 |
MyFree(acceptvar); |
1332 |
} |
1333 |
|
1334 |
struct Accept * |
1335 |
find_accept(const char *nick, const char *user, |
1336 |
const char *host, struct Client *client_p, int do_match) |
1337 |
{ |
1338 |
dlink_node *ptr = NULL; |
1339 |
/* XXX We wouldn't need that if match() would return 0 on match */ |
1340 |
int (*cmpfunc)(const char *, const char *) = do_match ? match : irccmp; |
1341 |
|
1342 |
DLINK_FOREACH(ptr, client_p->localClient->acceptlist.head) |
1343 |
{ |
1344 |
struct Accept *acceptvar = ptr->data; |
1345 |
|
1346 |
if (cmpfunc(acceptvar->nick, nick) == do_match && |
1347 |
cmpfunc(acceptvar->user, user) == do_match && |
1348 |
cmpfunc(acceptvar->host, host) == do_match) |
1349 |
return acceptvar; |
1350 |
} |
1351 |
|
1352 |
return NULL; |
1353 |
} |
1354 |
|
1355 |
/* accept_message() |
1356 |
* |
1357 |
* inputs - pointer to source client |
1358 |
* - pointer to target client |
1359 |
* output - 1 if accept this message 0 if not |
1360 |
* side effects - See if source is on target's allow list |
1361 |
*/ |
1362 |
int |
1363 |
accept_message(struct Client *source, |
1364 |
struct Client *target) |
1365 |
{ |
1366 |
dlink_node *ptr = NULL; |
1367 |
|
1368 |
if (source == target || find_accept(source->name, source->username, |
1369 |
source->host, target, 1)) |
1370 |
return 1; |
1371 |
|
1372 |
if (IsSoftCallerId(target)) |
1373 |
DLINK_FOREACH(ptr, target->channel.head) |
1374 |
if (IsMember(source, ((struct Membership *)ptr->data)->chptr)) |
1375 |
return 1; |
1376 |
|
1377 |
return 0; |
1378 |
} |
1379 |
|
1380 |
/* del_all_accepts() |
1381 |
* |
1382 |
* inputs - pointer to exiting client |
1383 |
* output - NONE |
1384 |
* side effects - Walk through given clients acceptlist and remove all entries |
1385 |
*/ |
1386 |
void |
1387 |
del_all_accepts(struct Client *client_p) |
1388 |
{ |
1389 |
dlink_node *ptr = NULL, *next_ptr = NULL; |
1390 |
|
1391 |
DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->acceptlist.head) |
1392 |
del_accept(ptr->data, client_p); |
1393 |
} |
1394 |
|
1395 |
/* set_initial_nick() |
1396 |
* |
1397 |
* inputs |
1398 |
* output |
1399 |
* side effects - |
1400 |
* |
1401 |
* This function is only called to set up an initially registering |
1402 |
* client. |
1403 |
*/ |
1404 |
void |
1405 |
set_initial_nick(struct Client *source_p, const char *nick) |
1406 |
{ |
1407 |
char buf[USERLEN + 1]; |
1408 |
|
1409 |
/* This had to be copied here to avoid problems.. */ |
1410 |
source_p->tsinfo = CurrentTime; |
1411 |
|
1412 |
if (source_p->name[0]) |
1413 |
hash_del_client(source_p); |
1414 |
|
1415 |
strlcpy(source_p->name, nick, sizeof(source_p->name)); |
1416 |
hash_add_client(source_p); |
1417 |
|
1418 |
/* fd_desc is long enough */ |
1419 |
fd_note(&client_p->localClient->fd, "Nick: %s", nick); |
1420 |
|
1421 |
if (source_p->flags & FLAGS_GOTUSER) |
1422 |
{ |
1423 |
strlcpy(buf, source_p->username, sizeof(buf)); |
1424 |
|
1425 |
/* |
1426 |
* USER already received, now we have NICK. |
1427 |
* *NOTE* For servers "NICK" *must* precede the |
1428 |
* user message (giving USER before NICK is possible |
1429 |
* only for local client connection!). register_user |
1430 |
* may reject the client and call exit_client for it |
1431 |
* --must test this and exit m_nick too!!! |
1432 |
*/ |
1433 |
register_local_user(source_p, buf); |
1434 |
} |
1435 |
} |
1436 |
|
1437 |
/* change_local_nick() |
1438 |
* |
1439 |
* inputs - pointer to server |
1440 |
* - pointer to client |
1441 |
* - nick |
1442 |
* output - |
1443 |
* side effects - changes nick of a LOCAL user |
1444 |
*/ |
1445 |
void |
1446 |
change_local_nick(struct Client *client_p, struct Client *source_p, const char *nick) |
1447 |
{ |
1448 |
int samenick = 0; |
1449 |
|
1450 |
/* |
1451 |
* Client just changing his/her nick. If he/she is |
1452 |
* on a channel, send note of change to all clients |
1453 |
* on that channel. Propagate notice to other servers. |
1454 |
*/ |
1455 |
if ((source_p->localClient->last_nick_change + |
1456 |
ConfigFileEntry.max_nick_time) < CurrentTime) |
1457 |
source_p->localClient->number_of_nick_changes = 0; |
1458 |
source_p->localClient->last_nick_change = CurrentTime; |
1459 |
source_p->localClient->number_of_nick_changes++; |
1460 |
|
1461 |
if ((ConfigFileEntry.anti_nick_flood && |
1462 |
(source_p->localClient->number_of_nick_changes |
1463 |
<= ConfigFileEntry.max_nick_changes)) || |
1464 |
!ConfigFileEntry.anti_nick_flood || |
1465 |
(IsOper(source_p) && ConfigFileEntry.no_oper_flood)) |
1466 |
{ |
1467 |
samenick = !irccmp(source_p->name, nick); |
1468 |
if (!samenick) |
1469 |
source_p->tsinfo = CurrentTime; |
1470 |
|
1471 |
/* XXX - the format of this notice should eventually be changed |
1472 |
* to either %s[%s@%s], or even better would be get_client_name() -bill |
1473 |
*/ |
1474 |
sendto_realops_flags(UMODE_NCHANGE, L_ALL, "Nick change: From %s to %s [%s@%s]", |
1475 |
source_p->name, nick, source_p->username, source_p->host); |
1476 |
sendto_common_channels_local(source_p, 1, ":%s!%s@%s NICK :%s", |
1477 |
source_p->name, source_p->username, |
1478 |
source_p->host, nick); |
1479 |
|
1480 |
add_history(source_p, 1); |
1481 |
|
1482 |
/* Only hubs care about lazy link nicks not being sent on yet |
1483 |
* lazylink leafs/leafs always send their nicks up to hub, |
1484 |
* hence must always propagate nick changes. |
1485 |
* hubs might not propagate a nick change, if the leaf |
1486 |
* does not know about that client yet. |
1487 |
*/ |
1488 |
sendto_server(client_p, source_p, NULL, CAP_TS6, NOCAPS, |
1489 |
":%s NICK %s :%lu", |
1490 |
ID(source_p), nick, (unsigned long)source_p->tsinfo); |
1491 |
sendto_server(client_p, source_p, NULL, NOCAPS, CAP_TS6, |
1492 |
":%s NICK %s :%lu", |
1493 |
source_p->name, nick, (unsigned long)source_p->tsinfo); |
1494 |
} |
1495 |
else |
1496 |
{ |
1497 |
sendto_one(source_p, form_str(ERR_NICKTOOFAST), |
1498 |
me.name, source_p->name, source_p->name, |
1499 |
nick, ConfigFileEntry.max_nick_time); |
1500 |
return; |
1501 |
} |
1502 |
|
1503 |
/* Finally, add to hash */ |
1504 |
assert(source_p->name[0]); |
1505 |
|
1506 |
hash_del_client(source_p); |
1507 |
if (!samenick) |
1508 |
hash_check_watch(source_p, RPL_LOGOFF); |
1509 |
strcpy(source_p->name, nick); |
1510 |
hash_add_client(source_p); |
1511 |
|
1512 |
if (!samenick) |
1513 |
hash_check_watch(source_p, RPL_LOGON); |
1514 |
|
1515 |
/* fd_desc is long enough */ |
1516 |
fd_note(&client_p->localClient->fd, "Nick: %s", nick); |
1517 |
} |
1518 |
|
1519 |
/* log_user_exit() |
1520 |
* |
1521 |
* inputs - pointer to connecting client |
1522 |
* output - NONE |
1523 |
* side effects - Current exiting client is logged to |
1524 |
* either SYSLOG or to file. |
1525 |
*/ |
1526 |
void |
1527 |
log_user_exit(struct Client *source_p) |
1528 |
{ |
1529 |
time_t on_for = CurrentTime - source_p->firsttime; |
1530 |
#ifdef SYSLOG_USERS |
1531 |
if (IsClient(source_p)) |
1532 |
{ |
1533 |
ilog(L_INFO, "%s (%3ld:%02ld:%02ld): %s!%s@%s %llu/%llu\n", |
1534 |
myctime(source_p->firsttime), |
1535 |
(signed long) on_for / 3600, |
1536 |
(signed long) (on_for % 3600)/60, |
1537 |
(signed long) on_for % 60, |
1538 |
source_p->name, source_p->username, source_p->host, |
1539 |
source_p->localClient->send.bytes>>10, |
1540 |
source_p->localClient->recv.bytes>>10); |
1541 |
} |
1542 |
#else |
1543 |
{ |
1544 |
char linebuf[BUFSIZ]; |
1545 |
|
1546 |
/* |
1547 |
* This conditional makes the logfile active only after |
1548 |
* it's been created - thus logging can be turned off by |
1549 |
* removing the file. |
1550 |
* -Taner |
1551 |
*/ |
1552 |
if (IsClient(source_p)) |
1553 |
{ |
1554 |
if (user_log_fb == NULL) |
1555 |
{ |
1556 |
if ((ConfigLoggingEntry.userlog[0] != '\0') && |
1557 |
(user_log_fb = fbopen(ConfigLoggingEntry.userlog, "r")) != NULL) |
1558 |
{ |
1559 |
fbclose(user_log_fb); |
1560 |
user_log_fb = fbopen(ConfigLoggingEntry.userlog, "a"); |
1561 |
} |
1562 |
} |
1563 |
|
1564 |
if (user_log_fb != NULL) |
1565 |
{ |
1566 |
size_t nbytes = ircsprintf(linebuf, |
1567 |
"%s (%3ld:%02ld:%02ld): %s!%s@%s %llu/%llu\n", |
1568 |
myctime(source_p->firsttime), |
1569 |
(signed long) on_for / 3600, |
1570 |
(signed long) (on_for % 3600)/60, |
1571 |
(signed long) on_for % 60, |
1572 |
source_p->name, source_p->username, source_p->host, |
1573 |
source_p->localClient->send.bytes>>10, |
1574 |
source_p->localClient->recv.bytes>>10); |
1575 |
fbputs(linebuf, user_log_fb, nbytes); |
1576 |
} |
1577 |
} |
1578 |
} |
1579 |
#endif |
1580 |
} |
1581 |
|
1582 |
|
1583 |
/* log_oper_action() |
1584 |
* |
1585 |
* inputs - type of oper log entry |
1586 |
* - pointer to oper |
1587 |
* - const char *pattern == format string |
1588 |
* - var args for format string |
1589 |
* output - none |
1590 |
* side effects - corresponding log is written to, if its present. |
1591 |
* |
1592 |
* rewritten sept 5 2005 - Dianora |
1593 |
*/ |
1594 |
void |
1595 |
log_oper_action(int log_type, const struct Client *source_p, |
1596 |
const char *pattern, ...) |
1597 |
{ |
1598 |
va_list args; |
1599 |
char linebuf[IRCD_BUFSIZE]; |
1600 |
FBFILE *log_fb; |
1601 |
char *logfile; |
1602 |
const char *log_message; |
1603 |
size_t nbytes; |
1604 |
size_t n_preamble; |
1605 |
char *p; |
1606 |
|
1607 |
switch(log_type) |
1608 |
{ |
1609 |
case LOG_OPER_TYPE: |
1610 |
logfile = ConfigLoggingEntry.operlog; |
1611 |
log_message = "OPER"; |
1612 |
break; |
1613 |
case LOG_FAILED_OPER_TYPE: |
1614 |
logfile = ConfigLoggingEntry.failed_operlog; |
1615 |
log_message = "FAILED OPER"; |
1616 |
break; |
1617 |
case LOG_KLINE_TYPE: |
1618 |
logfile = ConfigLoggingEntry.klinelog; |
1619 |
log_message = "KLINE"; |
1620 |
break; |
1621 |
case LOG_RKLINE_TYPE: |
1622 |
logfile = ConfigLoggingEntry.klinelog; |
1623 |
log_message = "RKLINE"; |
1624 |
break; |
1625 |
case LOG_DLINE_TYPE: |
1626 |
logfile = ConfigLoggingEntry.klinelog; |
1627 |
log_message = "DLINE"; |
1628 |
break; |
1629 |
case LOG_TEMP_DLINE_TYPE: |
1630 |
logfile = ConfigLoggingEntry.klinelog; |
1631 |
log_message = "TEMP DLINE"; |
1632 |
break; |
1633 |
case LOG_TEMP_KLINE_TYPE: |
1634 |
logfile = ConfigLoggingEntry.klinelog; |
1635 |
log_message = "TEMP KLINE"; |
1636 |
break; |
1637 |
case LOG_GLINE_TYPE: |
1638 |
logfile = ConfigLoggingEntry.glinelog; |
1639 |
log_message = "GLINE"; |
1640 |
break; |
1641 |
case LOG_KILL_TYPE: |
1642 |
logfile = ConfigLoggingEntry.killlog; |
1643 |
log_message = "KILL"; |
1644 |
break; |
1645 |
case LOG_IOERR_TYPE: |
1646 |
logfile = ConfigLoggingEntry.ioerrlog; |
1647 |
log_message = "IO ERR"; |
1648 |
break; |
1649 |
default: |
1650 |
return; |
1651 |
} |
1652 |
|
1653 |
if (*logfile == '\0') |
1654 |
return; |
1655 |
|
1656 |
p = linebuf; |
1657 |
if (source_p != NULL) |
1658 |
{ |
1659 |
n_preamble = ircsprintf(linebuf, "%s %s by (%s!%s@%s) :", |
1660 |
myctime(CurrentTime), log_message, |
1661 |
source_p->name, source_p->username, source_p->host); |
1662 |
|
1663 |
} |
1664 |
else |
1665 |
{ |
1666 |
n_preamble = ircsprintf(linebuf, "%s %s :", |
1667 |
myctime(CurrentTime), log_message); |
1668 |
} |
1669 |
|
1670 |
p += n_preamble; |
1671 |
|
1672 |
if ((log_fb = fbopen(logfile, "r")) != NULL) |
1673 |
{ |
1674 |
fbclose(log_fb); |
1675 |
log_fb = fbopen(logfile, "a"); |
1676 |
if (log_fb == NULL) |
1677 |
return; |
1678 |
va_start(args, pattern); |
1679 |
/* XXX add check for IRCD_BUFSIZE-(n_preamble+1) < 0 ? -db */ |
1680 |
nbytes = vsnprintf(p, IRCD_BUFSIZE-(n_preamble+1), pattern, args); |
1681 |
nbytes += n_preamble; |
1682 |
va_end(args); |
1683 |
fbputs(linebuf, log_fb, nbytes); |
1684 |
fbclose(log_fb); |
1685 |
} |
1686 |
} |