2 * IRC - Internet Relay Chat, ircd/m_trace.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.
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 */
105 void do_trace(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
108 struct Client *acptr;
109 struct Client *acptr2;
110 const struct ConnectionClass* cl;
113 int link_s[MAXCONNECTIONS];
114 int link_u[MAXCONNECTIONS];
119 if (parc < 2 || BadPtr(parv[1]))
121 /* just "TRACE" without parameters. Must be from local client */
124 tname = cli_name(&me);
127 else if (parc < 3 || BadPtr(parv[2]))
129 /* No target specified. Make one before propagating. */
132 if ((acptr = find_match_server(parv[1])) ||
133 ((acptr = FindClient(parv[1])) && !MyUser(acptr)))
136 parv[2] = cli_name(cli_user(acptr)->server);
138 parv[2] = cli_name(acptr);
141 if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, IsServer(acptr),
142 "%s :%C", 2, parc, parv)) == HUNTED_NOSUCH)
148 /* Got "TRACE <tname> :<target>" */
150 if (MyUser(sptr) || Protocol(cptr) < 10)
151 acptr = find_match_server(parv[2]);
153 acptr = FindNServer(parv[2]);
154 if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, 0, "%s :%C", 2, parc,
155 parv)) == HUNTED_NOSUCH)
160 if (i == HUNTED_PASS) {
162 acptr = next_client(GlobalClientList, tname);
164 acptr = cli_from(acptr);
165 send_reply(sptr, RPL_TRACELINK,
166 version, debugmode, tname,
167 acptr ? cli_name(cli_from(acptr)) : "<No_match>");
171 doall = (parv[1] && (parc > 1)) ? !match(tname, cli_name(&me)) : 1;
172 wilds = !parv[1] || strchr(tname, '*') || strchr(tname, '?');
173 dow = wilds || doall;
175 /* Don't give (long) remote listings to lusers */
176 if (dow && !MyConnect(sptr) && !IsAnOper(sptr)) {
177 send_reply(sptr, RPL_TRACEEND);
181 for (i = 0; i < MAXCONNECTIONS; i++)
182 link_s[i] = 0, link_u[i] = 0;
185 for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr)) {
187 link_u[cli_fd(cli_from(acptr))]++;
188 else if (IsServer(acptr))
189 link_s[cli_fd(cli_from(acptr))]++;
193 /* report all direct connections */
195 for (i = 0; i <= HighestFd; i++) {
196 const char *conClass;
198 if (!(acptr = LocalClientArray[i])) /* Local Connection? */
200 if (IsInvisible(acptr) && dow && !(MyConnect(sptr) && IsOper(sptr)) &&
201 !IsAnOper(acptr) && (acptr != sptr))
203 if (!doall && wilds && match(tname, cli_name(acptr)))
205 if (!dow && 0 != ircd_strcmp(tname, cli_name(acptr)))
208 conClass = get_client_class(acptr);
210 switch (cli_status(acptr)) {
211 case STAT_CONNECTING:
212 send_reply(sptr, RPL_TRACECONNECTING, conClass, cli_name(acptr));
216 send_reply(sptr, RPL_TRACEHANDSHAKE, conClass, cli_name(acptr));
222 case STAT_UNKNOWN_USER:
223 send_reply(sptr, RPL_TRACEUNKNOWN, conClass,
224 get_client_name(acptr, HIDE_IP));
227 case STAT_UNKNOWN_SERVER:
228 send_reply(sptr, RPL_TRACEUNKNOWN, conClass, "Unknown Server");
232 /* Only opers see users if there is a wildcard
233 but anyone can see all the opers. */
234 if ((IsAnOper(sptr) && (MyUser(sptr) ||
235 !(dow && IsInvisible(acptr)))) || !dow || IsAnOper(acptr)) {
237 send_reply(sptr, RPL_TRACEOPERATOR, conClass,
238 get_client_name(acptr, SHOW_IP),
239 CurrentTime - cli_lasttime(acptr));
241 send_reply(sptr, RPL_TRACEUSER, conClass,
242 get_client_name(acptr, SHOW_IP),
243 CurrentTime - cli_lasttime(acptr));
248 * Connection is a server
250 * Serv <class> <nS> <nC> <name> <ConnBy> <last> <age>
252 * class Class the server is in
253 * nS Number of servers reached via this link
254 * nC Number of clients reached via this link
255 * name Name of the server linked
256 * ConnBy Who established this link
257 * last Seconds since we got something from this link
258 * age Seconds this link has been alive
260 * Additional comments etc...... -Cym-<cym@acrux.net>
264 if (cli_serv(acptr)->user) {
265 if (!cli_serv(acptr)->by[0]
266 || !(acptr2 = findNUser(cli_serv(acptr)->by))
267 || (cli_user(acptr2) != cli_serv(acptr)->user))
269 send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i],
270 link_u[i], cli_name(acptr),
271 acptr2 ? cli_name(acptr2) : "*",
272 cli_serv(acptr)->user->username,
273 cli_serv(acptr)->user->host,
274 CurrentTime - cli_lasttime(acptr),
275 CurrentTime - cli_serv(acptr)->timestamp);
277 send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i],
278 link_u[i], cli_name(acptr),
279 (*(cli_serv(acptr))->by) ? cli_serv(acptr)->by : "*", "*",
280 cli_name(&me), CurrentTime - cli_lasttime(acptr),
281 CurrentTime - cli_serv(acptr)->timestamp);
284 default: /* We actually shouldn't come here, -msa */
285 send_reply(sptr, RPL_TRACENEWTYPE, get_client_name(acptr, HIDE_IP));
291 * Add these lines to summarize the above which can get rather long
292 * and messy when done remotely - Avalon
294 if (IsAnOper(sptr) && doall) {
295 for (cl = get_class_list(); cl; cl = cl->next) {
297 send_reply(sptr, RPL_TRACECLASS, ConClass(cl), Links(cl) - 1);
300 send_reply(sptr, RPL_TRACEEND);
304 * m_trace - generic message handler
306 * parv[0] = sender prefix
307 * parv[1] = nick or servername
308 * parv[2] = 'target' servername
310 int m_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
312 if (feature_bool(FEAT_HIS_TRACE))
313 return send_reply(cptr, ERR_NOPRIVILEGES);
314 do_trace(cptr, sptr, parc, parv);
319 * ms_trace - server message handler
321 * parv[0] = sender prefix
322 * parv[1] = nick or servername
323 * parv[2] = 'target' servername
325 int ms_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
327 do_trace(cptr, sptr, parc, parv);
332 * mo_trace - oper message handler
334 * parv[0] = sender prefix
335 * parv[1] = nick or servername
336 * parv[2] = 'target' servername
338 int mo_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
340 if (feature_bool(FEAT_HIS_TRACE) && !IsAnOper(sptr))
341 return send_reply(cptr, ERR_NOPRIVILEGES);
342 do_trace(cptr, sptr, parc, parv);