2 * ircd-ratbox: A slightly useful ircd.
3 * m_trace.c: Traces a path to a client/server.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
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 2 of the License, or
12 * (at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include "s_newconf.h"
43 static const char trace_desc
[] =
44 "Provides the TRACE command to trace the route to a client or server";
46 static void m_trace(struct MsgBuf
*, struct Client
*, struct Client
*, int, const char **);
48 static void trace_spy(struct Client
*, struct Client
*);
50 struct Message trace_msgtab
= {
52 {mg_unreg
, {m_trace
, 0}, {m_trace
, 0}, mg_ignore
, mg_ignore
, {m_trace
, 0}}
57 mapi_clist_av1 trace_clist
[] = { &trace_msgtab
, NULL
};
58 mapi_hlist_av1 trace_hlist
[] = {
59 { "doing_trace", &doing_trace_hook
},
62 DECLARE_MODULE_AV2(trace
, NULL
, NULL
, trace_clist
, trace_hlist
, NULL
, NULL
, NULL
, trace_desc
);
64 static void count_downlinks(struct Client
*server_p
, int *pservcount
, int *pusercount
);
65 static int report_this_status(struct Client
*source_p
, struct Client
*target_p
);
67 static const char *empty_sockhost
= "255.255.255.255";
71 * parv[1] = servername
74 m_trace(struct MsgBuf
*msgbuf_p
, struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
76 struct Client
*target_p
= NULL
;
79 bool doall
= false, wilds
, dow
;
89 if(hunt_server(client_p
, source_p
, ":%s TRACE %s :%s", 2, parc
, parv
) !=
97 /* if we have 3 parameters, then the command is directed at us. So
98 * we shouldnt be forwarding it anywhere.
102 switch (hunt_server(client_p
, source_p
, ":%s TRACE :%s", 1, parc
, parv
))
104 case HUNTED_PASS
: /* note: gets here only if parv[1] exists */
106 struct Client
*ac2ptr
;
108 if(MyClient(source_p
))
109 ac2ptr
= find_named_client(tname
);
111 ac2ptr
= find_client(tname
);
115 RB_DLINK_FOREACH(ptr
, global_serv_list
.head
)
119 if(match(tname
, ac2ptr
->name
))
126 /* giving this out with flattened links defeats the
129 if(IsOper(source_p
) || IsExemptShide(source_p
) ||
130 !ConfigServerHide
.flatten_links
)
131 sendto_one_numeric(source_p
, RPL_TRACELINK
,
132 form_str(RPL_TRACELINK
),
134 ac2ptr
? ac2ptr
->name
: tname
,
135 ac2ptr
? ac2ptr
->from
->name
: "EEK!");
148 if(match(tname
, me
.name
))
152 /* if theyre tracing our SID, we need to move tname to our name so
153 * we dont give the sid in ENDOFTRACE
155 else if(!MyClient(source_p
) && !strcmp(tname
, me
.id
))
161 wilds
= strchr(tname
, '*') || strchr(tname
, '?');
162 dow
= wilds
|| doall
;
167 if(MyClient(source_p
) || parc
> 2)
168 target_p
= find_named_person(tname
);
170 target_p
= find_person(tname
);
172 /* tname could be pointing to an ID at this point, so reset
173 * it to target_p->name if we have a target --fl
177 report_this_status(source_p
, target_p
);
178 tname
= target_p
->name
;
181 trace_spy(source_p
, target_p
);
183 sendto_one_numeric(source_p
, RPL_ENDOFTRACE
,
184 form_str(RPL_ENDOFTRACE
), tname
);
188 trace_spy(source_p
, NULL
);
190 /* give non-opers a limited trace output of themselves (if local),
191 * opers and servers (if no shide) --fl
193 if(!IsOper(source_p
))
195 if(MyClient(source_p
))
197 if(doall
|| (wilds
&& match(tname
, source_p
->name
)))
198 report_this_status(source_p
, source_p
);
201 RB_DLINK_FOREACH(ptr
, local_oper_list
.head
)
203 target_p
= ptr
->data
;
205 if(!doall
&& wilds
&& (match(tname
, target_p
->name
) == 0))
208 report_this_status(source_p
, target_p
);
211 if (IsExemptShide(source_p
) || !ConfigServerHide
.flatten_links
)
213 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
215 target_p
= ptr
->data
;
217 if(!doall
&& wilds
&& !match(tname
, target_p
->name
))
220 report_this_status(source_p
, target_p
);
224 sendto_one_numeric(source_p
, RPL_ENDOFTRACE
,
225 form_str(RPL_ENDOFTRACE
), tname
);
229 /* source_p is opered */
231 /* report all direct connections */
232 RB_DLINK_FOREACH(ptr
, lclient_list
.head
)
234 target_p
= ptr
->data
;
236 /* dont show invisible users to remote opers */
237 if(IsInvisible(target_p
) && dow
&& !MyConnect(source_p
) && !IsOper(target_p
))
240 if(!doall
&& wilds
&& !match(tname
, target_p
->name
))
243 /* remote opers may not see invisible normal users */
244 if(dow
&& !MyConnect(source_p
) && !IsOper(target_p
) &&
245 IsInvisible(target_p
))
248 cnt
= report_this_status(source_p
, target_p
);
251 RB_DLINK_FOREACH(ptr
, serv_list
.head
)
253 target_p
= ptr
->data
;
255 if(!doall
&& wilds
&& !match(tname
, target_p
->name
))
258 cnt
= report_this_status(source_p
, target_p
);
261 if(MyConnect(source_p
))
263 RB_DLINK_FOREACH(ptr
, unknown_list
.head
)
265 target_p
= ptr
->data
;
267 if(!doall
&& wilds
&& !match(tname
, target_p
->name
))
270 cnt
= report_this_status(source_p
, target_p
);
276 sendto_one_numeric(source_p
, ERR_NOSUCHSERVER
, form_str(ERR_NOSUCHSERVER
),
279 /* let the user have some idea that its at the end of the
282 sendto_one_numeric(source_p
, RPL_ENDOFTRACE
,
283 form_str(RPL_ENDOFTRACE
), tname
);
289 RB_DLINK_FOREACH(ptr
, class_list
.head
)
293 if(CurrUsers(cltmp
) > 0)
294 sendto_one_numeric(source_p
, RPL_TRACECLASS
,
295 form_str(RPL_TRACECLASS
),
296 ClassName(cltmp
), CurrUsers(cltmp
));
300 sendto_one_numeric(source_p
, RPL_ENDOFTRACE
, form_str(RPL_ENDOFTRACE
), tname
);
306 * inputs - pointer to server to count
307 * - pointers to server and user count
309 * side effects - server and user counts are added to given values
312 count_downlinks(struct Client
*server_p
, int *pservcount
, int *pusercount
)
317 *pusercount
+= rb_dlink_list_length(&server_p
->serv
->users
);
318 RB_DLINK_FOREACH(ptr
, server_p
->serv
->servers
.head
)
320 count_downlinks(ptr
->data
, pservcount
, pusercount
);
327 * inputs - pointer to client to report to
328 * - pointer to client to report about
329 * output - counter of number of hits
330 * side effects - NONE
333 report_this_status(struct Client
*source_p
, struct Client
*target_p
)
336 const char *class_name
;
340 /* sanity check - should never happen */
341 if(!MyConnect(target_p
))
344 rb_inet_ntop_sock((struct sockaddr
*)&target_p
->localClient
->ip
, ip
, sizeof(ip
));
345 class_name
= get_client_class(target_p
);
347 if(IsAnyServer(target_p
))
348 name
= target_p
->name
;
350 name
= get_client_name(target_p
, HIDE_IP
);
352 switch (target_p
->status
)
354 case STAT_CONNECTING
:
355 sendto_one_numeric(source_p
, RPL_TRACECONNECTING
,
356 form_str(RPL_TRACECONNECTING
),
362 sendto_one_numeric(source_p
, RPL_TRACEHANDSHAKE
,
363 form_str(RPL_TRACEHANDSHAKE
),
372 /* added time -Taner */
373 sendto_one_numeric(source_p
, RPL_TRACEUNKNOWN
,
374 form_str(RPL_TRACEUNKNOWN
),
375 class_name
, name
, ip
,
376 (unsigned long)(rb_current_time() - target_p
->localClient
->firsttime
));
382 sendto_one_numeric(source_p
,
383 IsOper(target_p
) ? RPL_TRACEOPERATOR
: RPL_TRACEUSER
,
384 IsOper(target_p
) ? form_str(RPL_TRACEOPERATOR
) : form_str(RPL_TRACEUSER
),
386 show_ip(source_p
, target_p
) ? ip
: empty_sockhost
,
387 (unsigned long)(rb_current_time() - target_p
->localClient
->lasttime
),
388 (unsigned long)(rb_current_time() - target_p
->localClient
->last
));
399 count_downlinks(target_p
, &servcount
, &usercount
);
401 sendto_one_numeric(source_p
, RPL_TRACESERVER
, form_str(RPL_TRACESERVER
),
402 class_name
, servcount
, usercount
, name
,
403 *(target_p
->serv
->by
) ? target_p
->serv
->by
: "*", "*",
405 (unsigned long)(rb_current_time() - target_p
->localClient
->lasttime
));
411 default: /* ...we actually shouldn't come here... --msa */
412 sendto_one_numeric(source_p
, RPL_TRACENEWTYPE
,
413 form_str(RPL_TRACENEWTYPE
), name
);
423 * input - pointer to client
425 * side effects - hook event doing_trace is called
428 trace_spy(struct Client
*source_p
, struct Client
*target_p
)
430 hook_data_client hdata
;
432 hdata
.client
= source_p
;
433 hdata
.target
= target_p
;
435 call_hook(doing_trace_hook
, &hdata
);