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1 | /* | |
2 | * IRC - Internet Relay Chat, ircd/s_user.c (formerly ircd/s_msg.c) | |
3 | * Copyright (C) 1990 Jarkko Oikarinen and | |
4 | * University of Oulu, Computing Center | |
5 | * | |
6 | * See file AUTHORS in IRC package for additional names of | |
7 | * the programmers. | |
8 | * | |
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) | |
12 | * any later version. | |
13 | * | |
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. | |
18 | * | |
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. | |
22 | */ | |
23 | /** @file | |
24 | * @brief Miscellaneous user-related helper functions. | |
25 | * @version $Id: s_user.c,v 1.99.2.2 2006/02/16 03:49:54 entrope Exp $ | |
26 | */ | |
27 | #include "config.h" | |
28 | ||
29 | #include "s_user.h" | |
30 | #include "IPcheck.h" | |
31 | #include "channel.h" | |
32 | #include "class.h" | |
33 | #include "client.h" | |
34 | #include "hash.h" | |
35 | #include "ircd.h" | |
36 | #include "ircd_alloc.h" | |
37 | #include "ircd_chattr.h" | |
38 | #include "ircd_features.h" | |
39 | #include "ircd_log.h" | |
40 | #include "ircd_reply.h" | |
41 | #include "ircd_snprintf.h" | |
42 | #include "ircd_string.h" | |
43 | #include "list.h" | |
44 | #include "match.h" | |
45 | #include "motd.h" | |
46 | #include "msg.h" | |
47 | #include "msgq.h" | |
48 | #include "numeric.h" | |
49 | #include "numnicks.h" | |
50 | #include "parse.h" | |
51 | #include "querycmds.h" | |
52 | #include "random.h" | |
53 | #include "s_auth.h" | |
54 | #include "s_bsd.h" | |
55 | #include "s_conf.h" | |
56 | #include "s_debug.h" | |
57 | #include "s_misc.h" | |
58 | #include "s_serv.h" /* max_client_count */ | |
59 | #include "send.h" | |
60 | #include "struct.h" | |
61 | #include "supported.h" | |
62 | #include "sys.h" | |
63 | #include "userload.h" | |
64 | #include "version.h" | |
65 | #include "whowas.h" | |
66 | ||
67 | #include "handlers.h" /* m_motd and m_lusers */ | |
68 | ||
69 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
70 | #include <fcntl.h> | |
71 | #include <stdio.h> | |
72 | #include <stdlib.h> | |
73 | #include <string.h> | |
74 | #include <sys/stat.h> | |
75 | ||
76 | static char *IsVhost(char *hostmask, int oper); | |
77 | static char *IsVhostPass(char *hostmask); | |
78 | ||
79 | /** Count of allocated User structures. */ | |
80 | static int userCount = 0; | |
81 | ||
82 | /** Makes sure that \a cptr has a User information block. | |
83 | * If cli_user(cptr) != NULL, does nothing. | |
84 | * @param[in] cptr Client to attach User struct to. | |
85 | * @return User struct associated with \a cptr. | |
86 | */ | |
87 | struct User *make_user(struct Client *cptr) | |
88 | { | |
89 | assert(0 != cptr); | |
90 | ||
91 | if (!cli_user(cptr)) { | |
92 | cli_user(cptr) = (struct User*) MyMalloc(sizeof(struct User)); | |
93 | assert(0 != cli_user(cptr)); | |
94 | ||
95 | /* All variables are 0 by default */ | |
96 | memset(cli_user(cptr), 0, sizeof(struct User)); | |
97 | ++userCount; | |
98 | cli_user(cptr)->refcnt = 1; | |
99 | } | |
100 | return cli_user(cptr); | |
101 | } | |
102 | ||
103 | /** Dereference \a user. | |
104 | * User structures are reference-counted; if the refcount of \a user | |
105 | * becomes zero, free it. | |
106 | * @param[in] user User to dereference. | |
107 | */ | |
108 | void free_user(struct User* user) | |
109 | { | |
110 | assert(0 != user); | |
111 | assert(0 < user->refcnt); | |
112 | ||
113 | if (--user->refcnt == 0) { | |
114 | if (user->away) | |
115 | MyFree(user->away); | |
116 | /* | |
117 | * sanity check | |
118 | */ | |
119 | assert(0 == user->joined); | |
120 | assert(0 == user->invited); | |
121 | assert(0 == user->channel); | |
122 | ||
123 | MyFree(user); | |
124 | --userCount; | |
125 | } | |
126 | } | |
127 | ||
128 | /** Find number of User structs allocated and memory used by them. | |
129 | * @param[out] count_out Receives number of User structs allocated. | |
130 | * @param[out] bytes_out Receives number of bytes used by User structs. | |
131 | */ | |
132 | void user_count_memory(size_t* count_out, size_t* bytes_out) | |
133 | { | |
134 | assert(0 != count_out); | |
135 | assert(0 != bytes_out); | |
136 | *count_out = userCount; | |
137 | *bytes_out = userCount * sizeof(struct User); | |
138 | } | |
139 | ||
140 | ||
141 | /** Find the next client (starting at \a next) with a name that matches \a ch. | |
142 | * Normal usage loop is: | |
143 | * for (x = client; x = next_client(x,mask); x = x->next) | |
144 | * HandleMatchingClient; | |
145 | * | |
146 | * @param[in] next First client to check. | |
147 | * @param[in] ch Name mask to check against. | |
148 | * @return Next matching client found, or NULL if none. | |
149 | */ | |
150 | struct Client *next_client(struct Client *next, const char* ch) | |
151 | { | |
152 | struct Client *tmp = next; | |
153 | ||
154 | if (!tmp) | |
155 | return NULL; | |
156 | ||
157 | next = FindClient(ch); | |
158 | next = next ? next : tmp; | |
159 | if (cli_prev(tmp) == next) | |
160 | return NULL; | |
161 | if (next != tmp) | |
162 | return next; | |
163 | for (; next; next = cli_next(next)) | |
164 | if (!match(ch, cli_name(next))) | |
165 | break; | |
166 | return next; | |
167 | } | |
168 | ||
169 | /** Find the destination server for a command, and forward it if that is not us. | |
170 | * | |
171 | * \a server may be a nickname, server name, server mask (if \a from | |
172 | * is a local user) or server numnick (if \a is a server or remote | |
173 | * user). | |
174 | * | |
175 | * @param[in] from Client that sent the command to us. | |
176 | * @param[in] cmd Long-form command text. | |
177 | * @param[in] tok Token-form command text. | |
178 | * @param[in] one Client that originated the command (ignored). | |
179 | * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH. | |
180 | * @param[in] pattern Format string of arguments to command. | |
181 | * @param[in] server Index of target name or mask in \a parv. | |
182 | * @param[in] parc Number of valid elements in \a parv (must be less than 9). | |
183 | * @param[in] parv Array of arguments to command. | |
184 | * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS. | |
185 | */ | |
186 | int hunt_server_cmd(struct Client *from, const char *cmd, const char *tok, | |
187 | struct Client *one, int MustBeOper, const char *pattern, | |
188 | int server, int parc, char *parv[]) | |
189 | { | |
190 | struct Client *acptr; | |
191 | char *to; | |
192 | ||
193 | /* Assume it's me, if no server or an unregistered client */ | |
194 | if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from)) | |
195 | return (HUNTED_ISME); | |
196 | ||
197 | if (MustBeOper && !IsPrivileged(from)) | |
198 | { | |
199 | send_reply(from, ERR_NOPRIVILEGES); | |
200 | return HUNTED_NOSUCH; | |
201 | } | |
202 | ||
203 | /* Make sure it's a server */ | |
204 | if (MyUser(from)) { | |
205 | /* Make sure it's a server */ | |
206 | if (!strchr(to, '*')) { | |
207 | if (0 == (acptr = FindClient(to))) { | |
208 | send_reply(from, ERR_NOSUCHSERVER, to); | |
209 | return HUNTED_NOSUCH; | |
210 | } | |
211 | ||
212 | if (cli_user(acptr)) | |
213 | acptr = cli_user(acptr)->server; | |
214 | } else if (!(acptr = find_match_server(to))) { | |
215 | send_reply(from, ERR_NOSUCHSERVER, to); | |
216 | return (HUNTED_NOSUCH); | |
217 | } | |
218 | } else if (!(acptr = FindNServer(to))) { | |
219 | send_reply(from, SND_EXPLICIT | ERR_NOSUCHSERVER, "* :Server has disconnected"); | |
220 | return (HUNTED_NOSUCH); /* Server broke off in the meantime */ | |
221 | } | |
222 | ||
223 | if (IsMe(acptr)) | |
224 | return (HUNTED_ISME); | |
225 | ||
226 | if (MustBeOper && !IsPrivileged(from)) { | |
227 | send_reply(from, ERR_NOPRIVILEGES); | |
228 | return HUNTED_NOSUCH; | |
229 | } | |
230 | ||
231 | /* assert(!IsServer(from)); */ | |
232 | ||
233 | parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */ | |
234 | ||
235 | sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3], | |
236 | parv[4], parv[5], parv[6], parv[7], parv[8]); | |
237 | ||
238 | return (HUNTED_PASS); | |
239 | } | |
240 | ||
241 | /** Find the destination server for a command, and forward it (as a | |
242 | * high-priority command) if that is not us. | |
243 | * | |
244 | * \a server may be a nickname, server name, server mask (if \a from | |
245 | * is a local user) or server numnick (if \a is a server or remote | |
246 | * user). | |
247 | * Unlike hunt_server_cmd(), this appends the message to the | |
248 | * high-priority message queue for the destination server. | |
249 | * | |
250 | * @param[in] from Client that sent the command to us. | |
251 | * @param[in] cmd Long-form command text. | |
252 | * @param[in] tok Token-form command text. | |
253 | * @param[in] one Client that originated the command (ignored). | |
254 | * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH. | |
255 | * @param[in] pattern Format string of arguments to command. | |
256 | * @param[in] server Index of target name or mask in \a parv. | |
257 | * @param[in] parc Number of valid elements in \a parv (must be less than 9). | |
258 | * @param[in] parv Array of arguments to command. | |
259 | * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS. | |
260 | */ | |
261 | int hunt_server_prio_cmd(struct Client *from, const char *cmd, const char *tok, | |
262 | struct Client *one, int MustBeOper, | |
263 | const char *pattern, int server, int parc, | |
264 | char *parv[]) | |
265 | { | |
266 | struct Client *acptr; | |
267 | char *to; | |
268 | ||
269 | /* Assume it's me, if no server or an unregistered client */ | |
270 | if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from)) | |
271 | return (HUNTED_ISME); | |
272 | ||
273 | /* Make sure it's a server */ | |
274 | if (MyUser(from)) { | |
275 | /* Make sure it's a server */ | |
276 | if (!strchr(to, '*')) { | |
277 | if (0 == (acptr = FindClient(to))) { | |
278 | send_reply(from, ERR_NOSUCHSERVER, to); | |
279 | return HUNTED_NOSUCH; | |
280 | } | |
281 | ||
282 | if (cli_user(acptr)) | |
283 | acptr = cli_user(acptr)->server; | |
284 | } else if (!(acptr = find_match_server(to))) { | |
285 | send_reply(from, ERR_NOSUCHSERVER, to); | |
286 | return (HUNTED_NOSUCH); | |
287 | } | |
288 | } else if (!(acptr = FindNServer(to))) | |
289 | return (HUNTED_NOSUCH); /* Server broke off in the meantime */ | |
290 | ||
291 | if (IsMe(acptr)) | |
292 | return (HUNTED_ISME); | |
293 | ||
294 | if (MustBeOper && !IsPrivileged(from)) { | |
295 | send_reply(from, ERR_NOPRIVILEGES); | |
296 | return HUNTED_NOSUCH; | |
297 | } | |
298 | ||
299 | /* assert(!IsServer(from)); SETTIME to particular destinations permitted */ | |
300 | ||
301 | parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */ | |
302 | ||
303 | sendcmdto_prio_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3], | |
304 | parv[4], parv[5], parv[6], parv[7], parv[8]); | |
305 | ||
306 | return (HUNTED_PASS); | |
307 | } | |
308 | ||
309 | ||
310 | /* | |
311 | * register_user | |
312 | * | |
313 | * This function is called when both NICK and USER messages | |
314 | * have been accepted for the client, in whatever order. Only | |
315 | * after this the USER message is propagated. | |
316 | * | |
317 | * NICK's must be propagated at once when received, although | |
318 | * it would be better to delay them too until full info is | |
319 | * available. Doing it is not so simple though, would have | |
320 | * to implement the following: | |
321 | * | |
322 | * 1) user telnets in and gives only "NICK foobar" and waits | |
323 | * 2) another user far away logs in normally with the nick | |
324 | * "foobar" (quite legal, as this server didn't propagate it). | |
325 | * 3) now this server gets nick "foobar" from outside, but | |
326 | * has already the same defined locally. Current server | |
327 | * would just issue "KILL foobar" to clean out dups. But, | |
328 | * this is not fair. It should actually request another | |
329 | * nick from local user or kill him/her... | |
330 | */ | |
331 | /** Finish registering a user who has sent both NICK and USER. | |
332 | * For local connections, possibly check IAuth; make sure there is a | |
333 | * matching Client config block; clean the username field; check | |
334 | * K/k-lines; check for "hacked" looking usernames; assign a numnick; | |
335 | * and send greeting (WELCOME, ISUPPORT, MOTD, etc). | |
336 | * For all connections, update the invisible user and operator counts; | |
337 | * run IPcheck against their address; and forward the NICK. | |
338 | * | |
339 | * @param[in] cptr Client who introduced the user. | |
340 | * @param[in,out] sptr Client who has been fully introduced. | |
341 | * @return Zero or CPTR_KILLED. | |
342 | */ | |
343 | int register_user(struct Client *cptr, struct Client *sptr) | |
344 | { | |
345 | char* parv[4]; | |
346 | char* tmpstr; | |
347 | struct User* user = cli_user(sptr); | |
348 | char ip_base64[25]; | |
349 | ||
350 | user->last = CurrentTime; | |
351 | parv[0] = cli_name(sptr); | |
352 | parv[1] = parv[2] = NULL; | |
353 | ||
354 | if (MyConnect(sptr)) | |
355 | { | |
356 | assert(cptr == sptr); | |
357 | ||
358 | /* Have to set up "realusername" */ | |
359 | ircd_strncpy(user->realusername, user->username, USERLEN); | |
360 | ||
361 | Count_unknownbecomesclient(sptr, UserStats); | |
362 | ||
363 | if (MyConnect(sptr) && feature_bool(FEAT_AUTOINVISIBLE)) | |
364 | SetInvisible(sptr); | |
365 | ||
366 | if(MyConnect(sptr) && feature_bool(FEAT_SETHOST_AUTO)) { | |
367 | if (conf_check_slines(sptr)) { | |
368 | send_reply(sptr, RPL_USINGSLINE); | |
369 | SetSetHost(sptr); | |
370 | } | |
371 | } | |
372 | ||
373 | SetUser(sptr); | |
374 | cli_handler(sptr) = CLIENT_HANDLER; | |
375 | SetLocalNumNick(sptr); | |
376 | send_reply(sptr, | |
377 | RPL_WELCOME, | |
378 | feature_str(FEAT_NETWORK), | |
379 | feature_str(FEAT_PROVIDER) ? " via " : "", | |
380 | feature_str(FEAT_PROVIDER) ? feature_str(FEAT_PROVIDER) : "", | |
381 | cli_name(sptr)); | |
382 | /* | |
383 | * This is a duplicate of the NOTICE but see below... | |
384 | */ | |
385 | send_reply(sptr, RPL_YOURHOST, cli_name(&me), version); | |
386 | send_reply(sptr, RPL_CREATED, creation); | |
387 | send_reply(sptr, RPL_MYINFO, cli_name(&me), version, infousermodes, | |
388 | infochanmodes, infochanmodeswithparams); | |
389 | send_supported(sptr); | |
390 | m_lusers(sptr, sptr, 1, parv); | |
391 | update_load(); | |
392 | motd_signon(sptr); | |
393 | if (cli_snomask(sptr) & SNO_NOISY) | |
394 | set_snomask(sptr, cli_snomask(sptr) & SNO_NOISY, SNO_ADD); | |
395 | if (feature_bool(FEAT_CONNEXIT_NOTICES)) | |
396 | sendto_opmask_butone(0, SNO_CONNEXIT, | |
397 | "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s%s>", | |
398 | cli_name(sptr), user->username, user->host, | |
399 | cli_sock_ip(sptr), get_client_class(sptr), | |
400 | cli_info(sptr), NumNick(cptr) /* two %s's */); | |
401 | ||
402 | IPcheck_connect_succeeded(sptr); | |
403 | /* | |
404 | * Set user's initial modes | |
405 | */ | |
406 | tmpstr = (char*)client_get_default_umode(sptr); | |
407 | if (tmpstr) for (; *tmpstr; ++tmpstr) { | |
408 | switch (*tmpstr) { | |
409 | case 's': | |
410 | if (!feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY)) { | |
411 | SetServNotice(sptr); | |
412 | set_snomask(sptr, SNO_DEFAULT, SNO_SET); | |
413 | } | |
414 | break; | |
415 | case 'w': | |
416 | if (!feature_bool(FEAT_WALLOPS_OPER_ONLY)) | |
417 | SetWallops(sptr); | |
418 | break; | |
419 | case 'i': | |
420 | SetInvisible(sptr); | |
421 | break; | |
422 | case 'd': | |
423 | SetDeaf(sptr); | |
424 | break; | |
425 | case 'g': | |
426 | if (!feature_bool(FEAT_HIS_DEBUG_OPER_ONLY)) | |
427 | SetDebug(sptr); | |
428 | break; | |
429 | } | |
430 | } | |
431 | } | |
432 | else { | |
433 | struct Client *acptr = user->server; | |
434 | ||
435 | ircd_strncpy(user->username, cli_username(sptr), USERLEN); | |
436 | Count_newremoteclient(UserStats, acptr); | |
437 | ||
438 | if (cli_from(acptr) != cli_from(sptr)) | |
439 | { | |
440 | sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])", | |
441 | sptr, cli_name(&me), cli_name(user->server), cli_name(cli_from(acptr)), | |
442 | cli_sockhost(cli_from(acptr))); | |
443 | SetFlag(sptr, FLAG_KILLED); | |
444 | return exit_client(cptr, sptr, &me, "NICK server wrong direction"); | |
445 | } | |
446 | else if (HasFlag(acptr, FLAG_TS8)) | |
447 | SetFlag(sptr, FLAG_TS8); | |
448 | ||
449 | /* | |
450 | * Check to see if this user is being propagated | |
451 | * as part of a net.burst, or is using protocol 9. | |
452 | * FIXME: This can be sped up - its stupid to check it for | |
453 | * every NICK message in a burst again --Run. | |
454 | */ | |
455 | for (; acptr != &me; acptr = cli_serv(acptr)->up) | |
456 | { | |
457 | if (IsBurst(acptr) || Protocol(acptr) < 10) | |
458 | break; | |
459 | } | |
460 | if (!IPcheck_remote_connect(sptr, (acptr != &me))) | |
461 | { | |
462 | /* | |
463 | * We ran out of bits to count this | |
464 | */ | |
465 | sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from your host -- Ghost)", | |
466 | sptr, cli_name(&me)); | |
467 | return exit_client(cptr, sptr, &me,"Too many connections from your host -- throttled"); | |
468 | } | |
469 | ||
470 | if(MyConnect(sptr) && feature_bool(FEAT_SETHOST_AUTO)) { | |
471 | if (conf_check_slines(sptr)) { | |
472 | send_reply(sptr, RPL_USINGSLINE); | |
473 | SetSetHost(sptr); | |
474 | } | |
475 | } | |
476 | ||
477 | SetUser(sptr); | |
478 | } | |
479 | ||
480 | if (IsInvisible(sptr)) | |
481 | ++UserStats.inv_clients; | |
482 | if (IsOper(sptr)) | |
483 | ++UserStats.opers; | |
484 | ||
485 | tmpstr = umode_str(sptr); | |
486 | /* Send full IP address to IPv6-grokking servers. */ | |
487 | sendcmdto_flag_serv_butone(user->server, CMD_NICK, cptr, | |
488 | FLAG_IPV6, FLAG_LAST_FLAG, | |
489 | "%s %d %Tu %s %s %s%s%s%s %s%s :%s", | |
490 | cli_name(sptr), cli_hopcount(sptr) + 1, | |
491 | cli_lastnick(sptr), | |
492 | user->realusername, user->realhost, | |
493 | *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "", | |
494 | iptobase64(ip_base64, &cli_ip(sptr), sizeof(ip_base64), 1), | |
495 | NumNick(sptr), cli_info(sptr)); | |
496 | /* Send fake IPv6 addresses to pre-IPv6 servers. */ | |
497 | sendcmdto_flag_serv_butone(user->server, CMD_NICK, cptr, | |
498 | FLAG_LAST_FLAG, FLAG_IPV6, | |
499 | "%s %d %Tu %s %s %s%s%s%s %s%s :%s", | |
500 | cli_name(sptr), cli_hopcount(sptr) + 1, | |
501 | cli_lastnick(sptr), | |
502 | user->realusername, user->realhost, | |
503 | *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "", | |
504 | iptobase64(ip_base64, &cli_ip(sptr), sizeof(ip_base64), 0), | |
505 | NumNick(sptr), cli_info(sptr)); | |
506 | ||
507 | /* Send user mode to client */ | |
508 | if (MyUser(sptr)) | |
509 | { | |
510 | static struct Flags flags; /* automatically initialized to zeros */ | |
511 | /* To avoid sending +r to the client due to auth-on-connect, set | |
512 | * the "old" FLAG_ACCOUNT bit to match the client's value. | |
513 | */ | |
514 | if (IsAccount(cptr)) | |
515 | FlagSet(&flags, FLAG_ACCOUNT); | |
516 | else | |
517 | FlagClr(&flags, FLAG_ACCOUNT); | |
518 | send_umode(cptr, sptr, &flags, ALL_UMODES); | |
519 | if ((cli_snomask(sptr) != SNO_DEFAULT) && HasFlag(sptr, FLAG_SERVNOTICE)) | |
520 | send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr)); | |
521 | } | |
522 | return 0; | |
523 | } | |
524 | ||
525 | /** List of user mode characters. */ | |
526 | static const struct UserMode { | |
527 | unsigned int flag; /**< User mode constant. */ | |
528 | char c; /**< Character corresponding to the mode. */ | |
529 | } userModeList[] = { | |
530 | { FLAG_OPER, 'o' }, | |
531 | { FLAG_LOCOP, 'O' }, | |
532 | { FLAG_INVISIBLE, 'i' }, | |
533 | { FLAG_WALLOP, 'w' }, | |
534 | { FLAG_SERVNOTICE, 's' }, | |
535 | { FLAG_DEAF, 'd' }, | |
536 | { FLAG_CHSERV, 'k' }, | |
537 | { FLAG_DEBUG, 'g' }, | |
538 | { FLAG_ACCOUNT, 'r' }, | |
539 | { FLAG_HIDDENHOST, 'x' }, | |
540 | { FLAG_ACCOUNTONLY, 'R' }, | |
541 | { FLAG_XTRAOP, 'X' }, | |
542 | { FLAG_NOCHAN, 'n' }, | |
543 | { FLAG_NOIDLE, 'I' }, | |
544 | { FLAG_SETHOST, 'h' }, | |
545 | { FLAG_PARANOID, 'P' } | |
546 | }; | |
547 | ||
548 | /** Length of #userModeList. */ | |
549 | #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode) | |
550 | ||
551 | /* | |
552 | * XXX - find a way to get rid of this | |
553 | */ | |
554 | /** Nasty global buffer used for communications with umode_str() and others. */ | |
555 | static char umodeBuf[BUFSIZE]; | |
556 | ||
557 | /** Try to set a user's nickname. | |
558 | * If \a sptr is a server, the client is being introduced for the first time. | |
559 | * @param[in] cptr Client to set nickname. | |
560 | * @param[in] sptr Client sending the NICK. | |
561 | * @param[in] nick New nickname. | |
562 | * @param[in] parc Number of arguments to NICK. | |
563 | * @param[in] parv Argument list to NICK. | |
564 | * @return CPTR_KILLED if \a cptr was killed, else 0. | |
565 | */ | |
566 | int set_nick_name(struct Client* cptr, struct Client* sptr, | |
567 | const char* nick, int parc, char* parv[]) | |
568 | { | |
569 | if (IsServer(sptr)) { | |
570 | int i; | |
571 | const char* account = 0; | |
572 | char* hostmask = 0; | |
573 | char* host = 0; | |
574 | const char* p, *pp; | |
575 | ||
576 | /* | |
577 | * A server introducing a new client, change source | |
578 | */ | |
579 | struct Client* new_client = make_client(cptr, STAT_UNKNOWN); | |
580 | assert(0 != new_client); | |
581 | ||
582 | cli_hopcount(new_client) = atoi(parv[2]); | |
583 | cli_lastnick(new_client) = atoi(parv[3]); | |
584 | if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') | |
585 | { | |
586 | for (p = parv[6] + 1; *p; p++) | |
587 | { | |
588 | for (i = 0; i < USERMODELIST_SIZE; ++i) | |
589 | { | |
590 | if (userModeList[i].c == *p) | |
591 | { | |
592 | SetFlag(new_client, userModeList[i].flag); | |
593 | if (userModeList[i].flag == FLAG_ACCOUNT) | |
594 | account = parv[7]; | |
595 | if (userModeList[i].flag == FLAG_SETHOST) | |
596 | hostmask = parv[parc - 4]; | |
597 | break; | |
598 | } | |
599 | } | |
600 | } | |
601 | } | |
602 | client_set_privs(new_client, NULL); /* set privs on user */ | |
603 | /* | |
604 | * Set new nick name. | |
605 | */ | |
606 | strcpy(cli_name(new_client), nick); | |
607 | cli_user(new_client) = make_user(new_client); | |
608 | cli_user(new_client)->server = sptr; | |
609 | SetRemoteNumNick(new_client, parv[parc - 2]); | |
610 | /* | |
611 | * IP# of remote client | |
612 | */ | |
613 | base64toip(parv[parc - 3], &cli_ip(new_client)); | |
614 | ||
615 | add_client_to_list(new_client); | |
616 | hAddClient(new_client); | |
617 | ||
618 | cli_serv(sptr)->ghost = 0; /* :server NICK means end of net.burst */ | |
619 | ircd_strncpy(cli_username(new_client), parv[4], USERLEN); | |
620 | ircd_strncpy(cli_user(new_client)->realusername, parv[4], USERLEN); | |
621 | ircd_strncpy(cli_user(new_client)->host, parv[5], HOSTLEN); | |
622 | ircd_strncpy(cli_user(new_client)->realhost, parv[5], HOSTLEN); | |
623 | ircd_strncpy(cli_info(new_client), parv[parc - 1], REALLEN); | |
624 | if (account) { | |
625 | int len = ACCOUNTLEN; | |
626 | if ((p = strchr(account, ':'))) { | |
627 | len = (p++) - account; | |
628 | cli_user(new_client)->acc_create = atoi(p); | |
629 | if ((pp = strchr(p, ':'))) | |
630 | cli_user(new_client)->acc_id = atoi(pp + 1); | |
631 | Debug((DEBUG_DEBUG, "Received timestamped account in user mode; " | |
632 | "account \"%s\", timestamp %Tu id %u", account, | |
633 | cli_user(new_client)->acc_create, | |
634 | cli_user(new_client)->acc_id)); | |
635 | } | |
636 | ircd_strncpy(cli_user(new_client)->account, account, len); | |
637 | } | |
638 | if (HasHiddenHost(new_client)) | |
639 | ircd_snprintf(0, cli_user(new_client)->host, HOSTLEN, "%s.%s", | |
640 | account, feature_str(FEAT_HIDDEN_HOST)); | |
641 | if (HasSetHost(new_client)) { | |
642 | if ((host = strrchr(hostmask, '@')) != NULL) { | |
643 | *host++ = '\0'; | |
644 | ircd_strncpy(cli_username(new_client), hostmask, USERLEN); | |
645 | ircd_strncpy(cli_user(new_client)->host, host, HOSTLEN); | |
646 | } | |
647 | } | |
648 | ||
649 | return register_user(cptr, new_client); | |
650 | } | |
651 | else if ((cli_name(sptr))[0]) { | |
652 | /* | |
653 | * Client changing its nick | |
654 | * | |
655 | * If the client belongs to me, then check to see | |
656 | * if client is on any channels where it is currently | |
657 | * banned. If so, do not allow the nick change to occur. | |
658 | */ | |
659 | if (MyUser(sptr)) { | |
660 | const char* channel_name; | |
661 | struct Membership *member; | |
662 | if ((channel_name = find_no_nickchange_channel(sptr)) && !IsXtraOp(sptr)) { | |
663 | return send_reply(cptr, ERR_BANNICKCHANGE, channel_name); | |
664 | } | |
665 | /* | |
666 | * Refuse nick change if the last nick change was less | |
667 | * then 30 seconds ago. This is intended to get rid of | |
668 | * clone bots doing NICK FLOOD. -SeKs | |
669 | * If someone didn't change their nick for more then 60 seconds | |
670 | * however, allow to do two nick changes immediately after another | |
671 | * before limiting the nick flood. -Run | |
672 | */ | |
673 | if (CurrentTime < cli_nextnick(cptr)) | |
674 | { | |
675 | cli_nextnick(cptr) += 2; | |
676 | send_reply(cptr, ERR_NICKTOOFAST, parv[1], | |
677 | cli_nextnick(cptr) - CurrentTime); | |
678 | /* Send error message */ | |
679 | sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cli_name(cptr)); | |
680 | /* bounce NICK to user */ | |
681 | return 0; /* ignore nick change! */ | |
682 | } | |
683 | else { | |
684 | /* Limit total to 1 change per NICK_DELAY seconds: */ | |
685 | cli_nextnick(cptr) += NICK_DELAY; | |
686 | /* However allow _maximal_ 1 extra consecutive nick change: */ | |
687 | if (cli_nextnick(cptr) < CurrentTime) | |
688 | cli_nextnick(cptr) = CurrentTime; | |
689 | } | |
690 | /* Invalidate all bans against the user so we check them again */ | |
691 | for (member = (cli_user(cptr))->channel; member; | |
692 | member = member->next_channel) | |
693 | ClearBanValid(member); | |
694 | } | |
695 | /* | |
696 | * Also set 'lastnick' to current time, if changed. | |
697 | */ | |
698 | if (0 != ircd_strcmp(parv[0], nick)) | |
699 | cli_lastnick(sptr) = (sptr == cptr) ? TStime() : atoi(parv[2]); | |
700 | ||
701 | /* | |
702 | * Client just changing his/her nick. If he/she is | |
703 | * on a channel, send note of change to all clients | |
704 | * on that channel. Propagate notice to other servers. | |
705 | */ | |
706 | if (IsUser(sptr)) { | |
707 | sendcmdto_common_channels_butone(sptr, CMD_NICK, NULL, ":%s", nick); | |
708 | add_history(sptr, 1); | |
709 | sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick, | |
710 | cli_lastnick(sptr)); | |
711 | } | |
712 | else | |
713 | sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick); | |
714 | ||
715 | if ((cli_name(sptr))[0]) | |
716 | hRemClient(sptr); | |
717 | strcpy(cli_name(sptr), nick); | |
718 | hAddClient(sptr); | |
719 | } | |
720 | else { | |
721 | /* Local client setting NICK the first time */ | |
722 | strcpy(cli_name(sptr), nick); | |
723 | hAddClient(sptr); | |
724 | return auth_set_nick(cli_auth(sptr), nick); | |
725 | } | |
726 | return 0; | |
727 | } | |
728 | ||
729 | /** Calculate the hash value for a target. | |
730 | * @param[in] target Pointer to target, cast to unsigned int. | |
731 | * @return Hash value constructed from the pointer. | |
732 | */ | |
733 | static unsigned char hash_target(unsigned int target) | |
734 | { | |
735 | return (unsigned char) (target >> 16) ^ (target >> 8); | |
736 | } | |
737 | ||
738 | /** Records \a target as a recent target for \a sptr. | |
739 | * @param[in] sptr User who has sent to a new target. | |
740 | * @param[in] target Target to add. | |
741 | */ | |
742 | void | |
743 | add_target(struct Client *sptr, void *target) | |
744 | { | |
745 | /* Ok, this shouldn't work esp on alpha | |
746 | */ | |
747 | unsigned char hash = hash_target((unsigned long) target); | |
748 | unsigned char* targets; | |
749 | int i; | |
750 | assert(0 != sptr); | |
751 | assert(cli_local(sptr)); | |
752 | ||
753 | targets = cli_targets(sptr); | |
754 | ||
755 | /* | |
756 | * Already in table? | |
757 | */ | |
758 | for (i = 0; i < MAXTARGETS; ++i) { | |
759 | if (targets[i] == hash) | |
760 | return; | |
761 | } | |
762 | /* | |
763 | * New target | |
764 | */ | |
765 | memmove(&targets[RESERVEDTARGETS + 1], | |
766 | &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1); | |
767 | targets[RESERVEDTARGETS] = hash; | |
768 | } | |
769 | ||
770 | /** Check whether \a sptr can send to or join \a target yet. | |
771 | * @param[in] sptr User trying to join a channel or send a message. | |
772 | * @param[in] target Target of the join or message. | |
773 | * @param[in] name Name of the target. | |
774 | * @param[in] created If non-zero, trying to join a new channel. | |
775 | * @return Non-zero if too many target changes; zero if okay to send. | |
776 | */ | |
777 | int check_target_limit(struct Client *sptr, void *target, const char *name, | |
778 | int created) | |
779 | { | |
780 | unsigned char hash = hash_target((unsigned long) target); | |
781 | int i; | |
782 | unsigned char* targets; | |
783 | ||
784 | assert(0 != sptr); | |
785 | assert(cli_local(sptr)); | |
786 | targets = cli_targets(sptr); | |
787 | ||
788 | /* If user is invited to channel, give him/her a free target */ | |
789 | if (IsChannelName(name) && IsInvited(sptr, target)) | |
790 | return 0; | |
791 | ||
792 | /* opers always have a free target */ | |
793 | if (IsAnOper(sptr)) | |
794 | return 0; | |
795 | ||
796 | /* | |
797 | * Same target as last time? | |
798 | */ | |
799 | if (targets[0] == hash) | |
800 | return 0; | |
801 | for (i = 1; i < MAXTARGETS; ++i) { | |
802 | if (targets[i] == hash) { | |
803 | memmove(&targets[1], &targets[0], i); | |
804 | targets[0] = hash; | |
805 | return 0; | |
806 | } | |
807 | } | |
808 | /* | |
809 | * New target | |
810 | */ | |
811 | if (!created) { | |
812 | if (CurrentTime < cli_nexttarget(sptr)) { | |
813 | if (cli_nexttarget(sptr) - CurrentTime < TARGET_DELAY + 8) { | |
814 | /* | |
815 | * No server flooding | |
816 | */ | |
817 | cli_nexttarget(sptr) += 2; | |
818 | send_reply(sptr, ERR_TARGETTOOFAST, name, | |
819 | cli_nexttarget(sptr) - CurrentTime); | |
820 | } | |
821 | return 1; | |
822 | } | |
823 | else { | |
824 | cli_nexttarget(sptr) += TARGET_DELAY; | |
825 | if (cli_nexttarget(sptr) < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1))) | |
826 | cli_nexttarget(sptr) = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)); | |
827 | } | |
828 | } | |
829 | memmove(&targets[1], &targets[0], MAXTARGETS - 1); | |
830 | targets[0] = hash; | |
831 | return 0; | |
832 | } | |
833 | ||
834 | /** Allows a channel operator to avoid target change checks when | |
835 | * sending messages to users on their channel. | |
836 | * @param[in] source User sending the message. | |
837 | * @param[in] nick Destination of the message. | |
838 | * @param[in] channel Name of channel being sent to. | |
839 | * @param[in] text Message to send. | |
840 | * @param[in] is_notice If non-zero, use CNOTICE instead of CPRIVMSG. | |
841 | */ | |
842 | /* Added 971023 by Run. */ | |
843 | int whisper(struct Client* source, const char* nick, const char* channel, | |
844 | const char* text, int is_notice) | |
845 | { | |
846 | struct Client* dest; | |
847 | struct Channel* chptr; | |
848 | struct Membership* membership; | |
849 | ||
850 | assert(0 != source); | |
851 | assert(0 != nick); | |
852 | assert(0 != channel); | |
853 | assert(MyUser(source)); | |
854 | ||
855 | if (!(dest = FindUser(nick))) { | |
856 | return send_reply(source, ERR_NOSUCHNICK, nick); | |
857 | } | |
858 | if (!(chptr = FindChannel(channel))) { | |
859 | return send_reply(source, ERR_NOSUCHCHANNEL, channel); | |
860 | } | |
861 | /* | |
862 | * compare both users channel lists, instead of the channels user list | |
863 | * since the link is the same, this should be a little faster for channels | |
864 | * with a lot of users | |
865 | */ | |
866 | for (membership = cli_user(source)->channel; membership; membership = membership->next_channel) { | |
867 | if (chptr == membership->channel) | |
868 | break; | |
869 | } | |
870 | if (0 == membership) { | |
871 | return send_reply(source, ERR_NOTONCHANNEL, chptr->chname); | |
872 | } | |
873 | if (!IsVoicedOrOpped(membership)) { | |
874 | return send_reply(source, ERR_VOICENEEDED, chptr->chname); | |
875 | } | |
876 | /* | |
877 | * lookup channel in destination | |
878 | */ | |
879 | assert(0 != cli_user(dest)); | |
880 | for (membership = cli_user(dest)->channel; membership; membership = membership->next_channel) { | |
881 | if (chptr == membership->channel) | |
882 | break; | |
883 | } | |
884 | if (0 == membership || IsZombie(membership)) { | |
885 | return send_reply(source, ERR_USERNOTINCHANNEL, cli_name(dest), chptr->chname); | |
886 | } | |
887 | if (is_silenced(source, dest)) | |
888 | return 0; | |
889 | ||
890 | if (cli_user(dest)->away) | |
891 | send_reply(source, RPL_AWAY, cli_name(dest), cli_user(dest)->away); | |
892 | if (is_notice) | |
893 | sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text); | |
894 | else | |
895 | sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text); | |
896 | return 0; | |
897 | } | |
898 | ||
899 | ||
900 | /** Send a user mode change for \a cptr to neighboring servers. | |
901 | * @param[in] cptr User whose mode is changing. | |
902 | * @param[in] sptr Client who sent us the mode change message. | |
903 | * @param[in] old Prior set of user flags. | |
904 | * @param[in] prop If non-zero, also include FLAG_OPER. | |
905 | */ | |
906 | void send_umode_out(struct Client *cptr, struct Client *sptr, | |
907 | struct Flags *old, int prop) | |
908 | { | |
909 | int i; | |
910 | struct Client *acptr; | |
911 | ||
912 | send_umode(NULL, sptr, old, prop ? SEND_UMODES : SEND_UMODES_BUT_OPER); | |
913 | ||
914 | for (i = HighestFd; i >= 0; i--) | |
915 | { | |
916 | if ((acptr = LocalClientArray[i]) && IsServer(acptr) && | |
917 | (acptr != cptr) && (acptr != sptr) && *umodeBuf) | |
918 | sendcmdto_one(sptr, CMD_MODE, acptr, "%s %s", cli_name(sptr), umodeBuf); | |
919 | } | |
920 | if (cptr && MyUser(cptr)) | |
921 | send_umode(cptr, sptr, old, ALL_UMODES); | |
922 | } | |
923 | ||
924 | ||
925 | /** Call \a fmt for each Client named in \a names. | |
926 | * @param[in] sptr Client requesting information. | |
927 | * @param[in] names Space-delimited list of nicknames. | |
928 | * @param[in] rpl Base reply string for messages. | |
929 | * @param[in] fmt Formatting callback function. | |
930 | */ | |
931 | void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt) | |
932 | { | |
933 | char* name; | |
934 | char* p = 0; | |
935 | int arg_count = 0; | |
936 | int users_found = 0; | |
937 | struct Client* acptr; | |
938 | struct MsgBuf* mb; | |
939 | ||
940 | assert(0 != sptr); | |
941 | assert(0 != names); | |
942 | assert(0 != fmt); | |
943 | ||
944 | mb = msgq_make(sptr, rpl_str(rpl), cli_name(&me), cli_name(sptr)); | |
945 | ||
946 | for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) { | |
947 | if ((acptr = FindUser(name))) { | |
948 | if (users_found++) | |
949 | msgq_append(0, mb, " "); | |
950 | (*fmt)(acptr, sptr, mb); | |
951 | } | |
952 | if (5 == ++arg_count) | |
953 | break; | |
954 | } | |
955 | send_buffer(sptr, mb, 0); | |
956 | msgq_clean(mb); | |
957 | } | |
958 | ||
959 | /** Set \a flag on \a cptr and possibly hide the client's hostmask. | |
960 | * @param[in,out] cptr User who is getting a new flag. | |
961 | * @param[in] flag Some flag that affects host-hiding (FLAG_HIDDENHOST, FLAG_ACCOUNT). | |
962 | * @return Zero. | |
963 | */ | |
964 | int | |
965 | hide_hostmask(struct Client *cptr, unsigned int flag) | |
966 | { | |
967 | struct Membership *chan; | |
968 | ||
969 | switch (flag) { | |
970 | case FLAG_HIDDENHOST: | |
971 | /* Local users cannot set +x unless FEAT_HOST_HIDING is true. */ | |
972 | if (MyConnect(cptr) && !feature_bool(FEAT_HOST_HIDING)) | |
973 | return 0; | |
974 | /* If the user is +h, we don't hide the hostmask. Set the flag to keep sync though */ | |
975 | if (HasSetHost(cptr)) { | |
976 | SetFlag(cptr, flag); | |
977 | return 0; | |
978 | } | |
979 | break; | |
980 | case FLAG_ACCOUNT: | |
981 | /* Invalidate all bans against the user so we check them again */ | |
982 | for (chan = (cli_user(cptr))->channel; chan; | |
983 | chan = chan->next_channel) | |
984 | ClearBanValid(chan); | |
985 | break; | |
986 | default: | |
987 | return 0; | |
988 | } | |
989 | ||
990 | SetFlag(cptr, flag); | |
991 | if (!HasFlag(cptr, FLAG_HIDDENHOST) || !HasFlag(cptr, FLAG_ACCOUNT)) | |
992 | return 0; | |
993 | ||
994 | sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Registered"); | |
995 | ircd_snprintf(0, cli_user(cptr)->host, HOSTLEN, "%s.%s", | |
996 | cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST)); | |
997 | ||
998 | /* ok, the client is now fully hidden, so let them know -- hikari */ | |
999 | if (MyConnect(cptr)) | |
1000 | send_reply(cptr, RPL_HOSTHIDDEN, cli_user(cptr)->host); | |
1001 | ||
1002 | /* | |
1003 | * Go through all channels the client was on, rejoin him | |
1004 | * and set the modes, if any | |
1005 | */ | |
1006 | for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel) | |
1007 | { | |
1008 | if (IsZombie(chan)) | |
1009 | continue; | |
1010 | /* Send a JOIN unless the user's join has been delayed. */ | |
1011 | if (!IsDelayedJoin(chan)) | |
1012 | sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr, 0, | |
1013 | "%H", chan->channel); | |
1014 | if (IsChanOp(chan) && HasVoice(chan)) | |
1015 | sendcmdto_channel_butserv_butone(&his, CMD_MODE, chan->channel, cptr, 0, | |
1016 | "%H +ov %C %C", chan->channel, cptr, | |
1017 | cptr); | |
1018 | else if (IsChanOp(chan) || HasVoice(chan)) | |
1019 | sendcmdto_channel_butserv_butone(&his, CMD_MODE, chan->channel, cptr, 0, | |
1020 | "%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr); | |
1021 | } | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | * set_hostmask() - derived from hide_hostmask() | |
1027 | * | |
1028 | */ | |
1029 | int set_hostmask(struct Client *cptr, char *hostmask, char *password) | |
1030 | { | |
1031 | int restore = 0; | |
1032 | int freeform = 0; | |
1033 | char *host, *new_vhost, *vhost_pass; | |
1034 | char hiddenhost[USERLEN + HOSTLEN + 2]; | |
1035 | struct Membership *chan; | |
1036 | ||
1037 | Debug((DEBUG_INFO, "set_hostmask() %C, %s, %s", cptr, hostmask, password)); | |
1038 | ||
1039 | /* sethost enabled? */ | |
1040 | if (MyConnect(cptr) && !feature_bool(FEAT_SETHOST)) { | |
1041 | send_reply(cptr, ERR_DISABLED, "SETHOST"); | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | /* sethost enabled for users? */ | |
1046 | if (MyConnect(cptr) && !IsAnOper(cptr) && !feature_bool(FEAT_SETHOST_USER)) { | |
1047 | send_reply(cptr, ERR_NOPRIVILEGES); | |
1048 | return 0; | |
1049 | } | |
1050 | ||
1051 | /* MODE_DEL: restore original hostmask */ | |
1052 | if (EmptyString(hostmask)) { | |
1053 | /* is already sethost'ed? */ | |
1054 | if (IsSetHost(cptr)) { | |
1055 | restore = 1; | |
1056 | sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Host change"); | |
1057 | /* If they are +rx, we need to return to their +x host, not their "real" host */ | |
1058 | if (HasHiddenHost(cptr)) | |
1059 | ircd_snprintf(0, cli_user(cptr)->host, HOSTLEN, "%s.%s", | |
1060 | cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST)); | |
1061 | else | |
1062 | strncpy(cli_user(cptr)->host, cli_user(cptr)->realhost, HOSTLEN); | |
1063 | strncpy(cli_user(cptr)->username, cli_user(cptr)->realusername, USERLEN); | |
1064 | /* log it */ | |
1065 | if (MyConnect(cptr)) | |
1066 | log_write(LS_SETHOST, L_INFO, LOG_NOSNOTICE, | |
1067 | "SETHOST (%s@%s) by (%#R): restoring real hostmask", | |
1068 | cli_user(cptr)->username, cli_user(cptr)->host, cptr); | |
1069 | } else | |
1070 | return 0; | |
1071 | /* MODE_ADD: set a new hostmask */ | |
1072 | } else { | |
1073 | /* chop up ident and host.cc */ | |
1074 | if ((host = strrchr(hostmask, '@'))) /* oper can specifiy ident@host.cc */ | |
1075 | *host++ = '\0'; | |
1076 | else /* user can only specifiy host.cc [password] */ | |
1077 | host = hostmask; | |
1078 | /* | |
1079 | * Oper sethost | |
1080 | */ | |
1081 | if (MyConnect(cptr)) { | |
1082 | if (IsAnOper(cptr)) { | |
1083 | if ((new_vhost = IsVhost(host, 1)) == NULL) { | |
1084 | if (!feature_bool(FEAT_SETHOST_FREEFORM)) { | |
1085 | send_reply(cptr, ERR_HOSTUNAVAIL, hostmask); | |
1086 | log_write(LS_SETHOST, L_INFO, LOG_NOSNOTICE, | |
1087 | "SETHOST (%s@%s) by (%#R): no such s-line", | |
1088 | (host != hostmask) ? hostmask : cli_user(cptr)->username, host, cptr); | |
1089 | return 0; | |
1090 | } else /* freeform active, log and go */ | |
1091 | freeform = 1; | |
1092 | } | |
1093 | sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Host change"); | |
1094 | /* set the new ident and host */ | |
1095 | if (host != hostmask) /* oper only specified host.cc */ | |
1096 | strncpy(cli_user(cptr)->username, hostmask, USERLEN); | |
1097 | strncpy(cli_user(cptr)->host, host, HOSTLEN); | |
1098 | /* log it */ | |
1099 | log_write(LS_SETHOST, (freeform) ? L_NOTICE : L_INFO, | |
1100 | (freeform) ? 0 : LOG_NOSNOTICE, "SETHOST (%s@%s) by (%#R)%s", | |
1101 | cli_user(cptr)->username, cli_user(cptr)->host, cptr, | |
1102 | (freeform) ? ": using freeform" : ""); | |
1103 | /* | |
1104 | * plain user sethost, handled here | |
1105 | */ | |
1106 | } else { | |
1107 | /* empty password? */ | |
1108 | if (EmptyString(password)) { | |
1109 | send_reply(cptr, ERR_NEEDMOREPARAMS, "MODE"); | |
1110 | return 0; | |
1111 | } | |
1112 | /* no such s-line */ | |
1113 | if ((new_vhost = IsVhost(host, 0)) == NULL) { | |
1114 | send_reply(cptr, ERR_HOSTUNAVAIL, hostmask); | |
1115 | log_write(LS_SETHOST, L_INFO, LOG_NOSNOTICE, "SETHOST (%s@%s %s) by (%#R): no such s-line", | |
1116 | cli_user(cptr)->username, host, password, cptr); | |
1117 | return 0; | |
1118 | } | |
1119 | /* no password */ | |
1120 | if ((vhost_pass = IsVhostPass(new_vhost)) == NULL) { | |
1121 | send_reply(cptr, ERR_PASSWDMISMATCH); | |
1122 | log_write(LS_SETHOST, L_INFO, 0, "SETHOST (%s@%s %s) by (%#R): trying to use an oper s-line", | |
1123 | cli_user(cptr)->username, host, password, cptr); | |
1124 | return 0; | |
1125 | } | |
1126 | /* incorrect password */ | |
1127 | if (strCasediff(vhost_pass, password)) { | |
1128 | send_reply(cptr, ERR_PASSWDMISMATCH); | |
1129 | log_write(LS_SETHOST, L_NOTICE, 0, "SETHOST (%s@%s %s) by (%#R): incorrect password", | |
1130 | cli_user(cptr)->username, host, password, cptr); | |
1131 | return 0; | |
1132 | } | |
1133 | sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Host change"); | |
1134 | /* set the new host */ | |
1135 | strncpy(cli_user(cptr)->host, new_vhost, HOSTLEN); | |
1136 | /* log it */ | |
1137 | log_write(LS_SETHOST, L_INFO, LOG_NOSNOTICE, "SETHOST (%s@%s) by (%#R)", | |
1138 | cli_user(cptr)->username, cli_user(cptr)->host, cptr); | |
1139 | } | |
1140 | } else { /* remote user */ | |
1141 | sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Host change"); | |
1142 | if (host != hostmask) /* oper only specified host.cc */ | |
1143 | strncpy(cli_user(cptr)->username, hostmask, USERLEN); | |
1144 | strncpy(cli_user(cptr)->host, host, HOSTLEN); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | if (restore) | |
1149 | ClearSetHost(cptr); | |
1150 | else | |
1151 | SetSetHost(cptr); | |
1152 | ||
1153 | if (MyConnect(cptr)) { | |
1154 | ircd_snprintf(0, hiddenhost, HOSTLEN + USERLEN + 2, "%s@%s", | |
1155 | cli_user(cptr)->username, cli_user(cptr)->host); | |
1156 | send_reply(cptr, RPL_HOSTHIDDEN, hiddenhost); | |
1157 | } | |
1158 | ||
1159 | #if 0 | |
1160 | /* Code copied from hide_hostmask(). This is the old (pre-delayedjoin) | |
1161 | * version. Switch this in if you're not using the delayed join patch. */ | |
1162 | /* | |
1163 | * Go through all channels the client was on, rejoin him | |
1164 | * and set the modes, if any | |
1165 | */ | |
1166 | for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel) { | |
1167 | if (IsZombie(chan)) | |
1168 | continue; | |
1169 | sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr, | |
1170 | "%H", chan->channel); | |
1171 | if (IsChanOp(chan) && HasVoice(chan)) { | |
1172 | sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr, | |
1173 | "%H +ov %C %C", chan->channel, cptr, cptr); | |
1174 | } else if (IsChanOp(chan) || HasVoice(chan)) { | |
1175 | sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr, | |
1176 | "%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr); | |
1177 | } | |
1178 | } | |
1179 | #endif | |
1180 | ||
1181 | /* | |
1182 | * Go through all channels the client was on, rejoin him | |
1183 | * and set the modes, if any | |
1184 | */ | |
1185 | for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel) { | |
1186 | if (IsZombie(chan)) | |
1187 | continue; | |
1188 | /* If this channel has delayed joins and the user has no modes, just set | |
1189 | * the delayed join flag rather than showing the join, even if the user | |
1190 | * was visible before */ | |
1191 | if (!IsChanOp(chan) && !HasVoice(chan) | |
1192 | && (chan->channel->mode.mode & MODE_DELJOINS)) { | |
1193 | SetDelayedJoin(chan); | |
1194 | } else { | |
1195 | sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr, 0, | |
1196 | "%H", chan->channel); | |
1197 | } | |
1198 | if (IsChanOp(chan) && HasVoice(chan)) { | |
1199 | sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr, 0, | |
1200 | "%H +ov %C %C", chan->channel, cptr, cptr); | |
1201 | } else if (IsChanOp(chan) || HasVoice(chan)) { | |
1202 | sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr, 0, | |
1203 | "%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr); | |
1204 | } | |
1205 | } | |
1206 | return 1; | |
1207 | } | |
1208 | ||
1209 | /** Set a user's mode. This function checks that \a cptr is trying to | |
1210 | * set his own mode, prevents local users from setting inappropriate | |
1211 | * modes through this function, and applies any other side effects of | |
1212 | * a successful mode change. | |
1213 | * | |
1214 | * @param[in,out] cptr User setting someone's mode. | |
1215 | * @param[in] sptr Client who sent the mode change message. | |
1216 | * @param[in] parc Number of parameters in \a parv. | |
1217 | * @param[in] parv Parameters to MODE. | |
1218 | * @return Zero. | |
1219 | */ | |
1220 | int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[]) | |
1221 | { | |
1222 | char** p; | |
1223 | char* m; | |
1224 | struct Client *acptr; | |
1225 | int what; | |
1226 | int i; | |
1227 | struct Flags setflags; | |
1228 | unsigned int tmpmask = 0; | |
1229 | int snomask_given = 0; | |
1230 | char buf[BUFSIZE]; | |
1231 | char *hostmask, *password; | |
1232 | int prop = 0; | |
1233 | int do_host_hiding = 0; | |
1234 | int do_set_host = 0; | |
1235 | ||
1236 | hostmask = password = NULL; | |
1237 | what = MODE_ADD; | |
1238 | ||
1239 | if (parc < 2) | |
1240 | return need_more_params(sptr, "MODE"); | |
1241 | ||
1242 | if (!(acptr = FindUser(parv[1]))) | |
1243 | { | |
1244 | if (MyConnect(sptr)) | |
1245 | send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]); | |
1246 | return 0; | |
1247 | } | |
1248 | ||
1249 | if (IsServer(sptr) || sptr != acptr) | |
1250 | { | |
1251 | if (IsServer(cptr)) | |
1252 | sendwallto_group_butone(&me, WALL_WALLOPS, 0, | |
1253 | "MODE for User %s from %s!%s", parv[1], | |
1254 | cli_name(cptr), cli_name(sptr)); | |
1255 | else | |
1256 | send_reply(sptr, ERR_USERSDONTMATCH); | |
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | if (parc < 3) | |
1261 | { | |
1262 | m = buf; | |
1263 | *m++ = '+'; | |
1264 | for (i = 0; i < USERMODELIST_SIZE; i++) | |
1265 | { | |
1266 | if (HasFlag(sptr, userModeList[i].flag) && | |
1267 | ((userModeList[i].flag != FLAG_ACCOUNT) && | |
1268 | (userModeList[i].flag != FLAG_SETHOST))) | |
1269 | *m++ = userModeList[i].c; | |
1270 | } | |
1271 | *m = '\0'; | |
1272 | send_reply(sptr, RPL_UMODEIS, buf); | |
1273 | if (HasFlag(sptr, FLAG_SERVNOTICE) && MyConnect(sptr) | |
1274 | && cli_snomask(sptr) != | |
1275 | (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT)) | |
1276 | send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr)); | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | /* | |
1281 | * find flags already set for user | |
1282 | * why not just copy them? | |
1283 | */ | |
1284 | setflags = cli_flags(sptr); | |
1285 | ||
1286 | if (MyConnect(sptr)) | |
1287 | tmpmask = cli_snomask(sptr); | |
1288 | ||
1289 | /* | |
1290 | * parse mode change string(s) | |
1291 | */ | |
1292 | for (p = &parv[2]; *p; p++) { /* p is changed in loop too */ | |
1293 | for (m = *p; *m; m++) { | |
1294 | switch (*m) { | |
1295 | case '+': | |
1296 | what = MODE_ADD; | |
1297 | break; | |
1298 | case '-': | |
1299 | what = MODE_DEL; | |
1300 | break; | |
1301 | case 's': | |
1302 | if (*(p + 1) && is_snomask(*(p + 1))) { | |
1303 | snomask_given = 1; | |
1304 | tmpmask = umode_make_snomask(tmpmask, *++p, what); | |
1305 | tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER); | |
1306 | } | |
1307 | else | |
1308 | tmpmask = (what == MODE_ADD) ? | |
1309 | (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0; | |
1310 | if (tmpmask) | |
1311 | SetServNotice(sptr); | |
1312 | else | |
1313 | ClearServNotice(sptr); | |
1314 | break; | |
1315 | case 'w': | |
1316 | if (what == MODE_ADD) | |
1317 | SetWallops(sptr); | |
1318 | else | |
1319 | ClearWallops(sptr); | |
1320 | break; | |
1321 | case 'o': | |
1322 | if (what == MODE_ADD) | |
1323 | SetOper(sptr); | |
1324 | else { | |
1325 | ClrFlag(sptr, FLAG_OPER); | |
1326 | ClrFlag(sptr, FLAG_LOCOP); | |
1327 | if (MyConnect(sptr)) | |
1328 | { | |
1329 | tmpmask = cli_snomask(sptr) & ~SNO_OPER; | |
1330 | cli_handler(sptr) = CLIENT_HANDLER; | |
1331 | } | |
1332 | } | |
1333 | break; | |
1334 | case 'O': | |
1335 | if (what == MODE_ADD) | |
1336 | SetLocOp(sptr); | |
1337 | else | |
1338 | { | |
1339 | ClrFlag(sptr, FLAG_OPER); | |
1340 | ClrFlag(sptr, FLAG_LOCOP); | |
1341 | if (MyConnect(sptr)) | |
1342 | { | |
1343 | tmpmask = cli_snomask(sptr) & ~SNO_OPER; | |
1344 | cli_handler(sptr) = CLIENT_HANDLER; | |
1345 | } | |
1346 | } | |
1347 | break; | |
1348 | case 'i': | |
1349 | if (what == MODE_ADD) | |
1350 | SetInvisible(sptr); | |
1351 | else | |
1352 | if (!feature_bool(FEAT_AUTOINVISIBLE) || IsOper(sptr)) /* Don't allow non-opers to -i if FEAT_AUTOINVISIBLE is set */ | |
1353 | ClearInvisible(sptr); | |
1354 | break; | |
1355 | case 'd': | |
1356 | if (what == MODE_ADD) | |
1357 | SetDeaf(sptr); | |
1358 | else | |
1359 | ClearDeaf(sptr); | |
1360 | break; | |
1361 | case 'k': | |
1362 | if (what == MODE_ADD) | |
1363 | SetChannelService(sptr); | |
1364 | else | |
1365 | ClearChannelService(sptr); | |
1366 | break; | |
1367 | case 'X': | |
1368 | if (what == MODE_ADD) | |
1369 | SetXtraOp(sptr); | |
1370 | else | |
1371 | ClearXtraOp(sptr); | |
1372 | break; | |
1373 | case 'n': | |
1374 | if (what == MODE_ADD) | |
1375 | SetNoChan(sptr); | |
1376 | else | |
1377 | ClearNoChan(sptr); | |
1378 | break; | |
1379 | case 'I': | |
1380 | if (what == MODE_ADD) | |
1381 | SetNoIdle(sptr); | |
1382 | else | |
1383 | ClearNoIdle(sptr); | |
1384 | break; | |
1385 | case 'g': | |
1386 | if (what == MODE_ADD) | |
1387 | SetDebug(sptr); | |
1388 | else | |
1389 | ClearDebug(sptr); | |
1390 | break; | |
1391 | case 'x': | |
1392 | if (what == MODE_ADD) | |
1393 | do_host_hiding = 1; | |
1394 | break; | |
1395 | case 'h': | |
1396 | if (what == MODE_ADD) { | |
1397 | if (*(p + 1) && is_hostmask(*(p + 1))) { | |
1398 | do_set_host = 1; | |
1399 | hostmask = *++p; | |
1400 | /* DON'T step p onto the trailing NULL in the parameter array! - splidge */ | |
1401 | if (*(p+1)) | |
1402 | password = *++p; | |
1403 | else | |
1404 | password = NULL; | |
1405 | } else { | |
1406 | if (!*(p+1)) | |
1407 | send_reply(sptr, ERR_NEEDMOREPARAMS, "SETHOST"); | |
1408 | else { | |
1409 | send_reply(sptr, ERR_BADHOSTMASK, *(p+1)); | |
1410 | p++; /* Swallow the arg anyway */ | |
1411 | } | |
1412 | } | |
1413 | } else { /* MODE_DEL */ | |
1414 | do_set_host = 1; | |
1415 | hostmask = NULL; | |
1416 | password = NULL; | |
1417 | } | |
1418 | break; | |
1419 | case 'R': | |
1420 | if (what == MODE_ADD) | |
1421 | SetAccountOnly(sptr); | |
1422 | else | |
1423 | ClearAccountOnly(sptr); | |
1424 | break; | |
1425 | case 'P': | |
1426 | if (what == MODE_ADD) | |
1427 | SetParanoid(sptr); | |
1428 | else | |
1429 | ClearParanoid(sptr); | |
1430 | break; | |
1431 | default: | |
1432 | send_reply(sptr, ERR_UMODEUNKNOWNFLAG, *m); | |
1433 | break; | |
1434 | } | |
1435 | } | |
1436 | } | |
1437 | /* | |
1438 | * Evaluate rules for new user mode | |
1439 | * Stop users making themselves operators too easily: | |
1440 | */ | |
1441 | if (!IsServer(cptr)) | |
1442 | { | |
1443 | if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr)) | |
1444 | ClearOper(sptr); | |
1445 | if (!FlagHas(&setflags, FLAG_LOCOP) && IsLocOp(sptr)) | |
1446 | ClearLocOp(sptr); | |
1447 | /* | |
1448 | * new umode; servers can set it, local users cannot; | |
1449 | * prevents users from /kick'ing or /mode -o'ing | |
1450 | */ | |
1451 | if (!FlagHas(&setflags, FLAG_CHSERV) && !IsOper(sptr)) | |
1452 | ClearChannelService(sptr); | |
1453 | if (!FlagHas(&setflags, FLAG_XTRAOP) && !IsOper(sptr)) | |
1454 | ClearXtraOp(sptr); | |
1455 | if (!FlagHas(&setflags, FLAG_NOCHAN) && !(IsOper(sptr) || feature_bool(FEAT_USER_HIDECHANS))) | |
1456 | ClearNoChan(sptr); | |
1457 | if (!FlagHas(&setflags, FLAG_NOIDLE) && !(IsOper(sptr) || feature_bool(FEAT_USER_HIDEIDLETIME))) | |
1458 | ClearNoIdle(sptr); | |
1459 | if (!FlagHas(&setflags, FLAG_PARANOID) && !IsOper(sptr)) | |
1460 | ClearParanoid(sptr); | |
1461 | ||
1462 | /* | |
1463 | * only send wallops to opers | |
1464 | */ | |
1465 | if (feature_bool(FEAT_WALLOPS_OPER_ONLY) && !IsAnOper(sptr) && | |
1466 | !FlagHas(&setflags, FLAG_WALLOP)) | |
1467 | ClearWallops(sptr); | |
1468 | if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY) && MyConnect(sptr) && | |
1469 | !IsAnOper(sptr) && !FlagHas(&setflags, FLAG_SERVNOTICE)) | |
1470 | { | |
1471 | ClearServNotice(sptr); | |
1472 | set_snomask(sptr, 0, SNO_SET); | |
1473 | } | |
1474 | if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY) && | |
1475 | !IsAnOper(sptr) && !FlagHas(&setflags, FLAG_DEBUG)) | |
1476 | ClearDebug(sptr); | |
1477 | } | |
1478 | if (MyConnect(sptr)) | |
1479 | { | |
1480 | if ((FlagHas(&setflags, FLAG_OPER) || FlagHas(&setflags, FLAG_LOCOP)) && | |
1481 | !IsAnOper(sptr)) | |
1482 | det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPERATOR); | |
1483 | ||
1484 | if (SendServNotice(sptr)) | |
1485 | { | |
1486 | if (tmpmask != cli_snomask(sptr)) | |
1487 | set_snomask(sptr, tmpmask, SNO_SET); | |
1488 | if (cli_snomask(sptr) && snomask_given) | |
1489 | send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr)); | |
1490 | } | |
1491 | else | |
1492 | set_snomask(sptr, 0, SNO_SET); | |
1493 | } | |
1494 | /* | |
1495 | * Compare new flags with old flags and send string which | |
1496 | * will cause servers to update correctly. | |
1497 | */ | |
1498 | if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr)) | |
1499 | { | |
1500 | /* user now oper */ | |
1501 | ++UserStats.opers; | |
1502 | client_set_privs(sptr, NULL); /* may set propagate privilege */ | |
1503 | } | |
1504 | /* remember propagate privilege setting */ | |
1505 | if (HasPriv(sptr, PRIV_PROPAGATE)) | |
1506 | prop = 1; | |
1507 | if (FlagHas(&setflags, FLAG_OPER) && !IsOper(sptr)) | |
1508 | { | |
1509 | /* user no longer oper */ | |
1510 | --UserStats.opers; | |
1511 | client_set_privs(sptr, NULL); /* will clear propagate privilege */ | |
1512 | } | |
1513 | if (FlagHas(&setflags, FLAG_INVISIBLE) && !IsInvisible(sptr)) | |
1514 | --UserStats.inv_clients; | |
1515 | if (!FlagHas(&setflags, FLAG_INVISIBLE) && IsInvisible(sptr)) | |
1516 | ++UserStats.inv_clients; | |
1517 | if (!FlagHas(&setflags, FLAG_HIDDENHOST) && do_host_hiding) | |
1518 | hide_hostmask(sptr, FLAG_HIDDENHOST); | |
1519 | if (do_set_host) { | |
1520 | /* We clear the flag in the old mask, so that the +h will be sent */ | |
1521 | /* Only do this if we're SETTING +h and it succeeded */ | |
1522 | if (set_hostmask(sptr, hostmask, password) && hostmask) | |
1523 | FlagClr(&setflags, FLAG_SETHOST); | |
1524 | } | |
1525 | send_umode_out(cptr, sptr, &setflags, prop); | |
1526 | ||
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | /** Build a mode string to describe modes for \a cptr. | |
1531 | * @param[in] cptr Some user. | |
1532 | * @return Pointer to a static buffer. | |
1533 | */ | |
1534 | char *umode_str(struct Client *cptr) | |
1535 | { | |
1536 | /* Maximum string size: "owidgrx\0" */ | |
1537 | char *m = umodeBuf; | |
1538 | int i; | |
1539 | struct Flags c_flags = cli_flags(cptr); | |
1540 | ||
1541 | if (!HasPriv(cptr, PRIV_PROPAGATE)) | |
1542 | FlagClr(&c_flags, FLAG_OPER); | |
1543 | ||
1544 | for (i = 0; i < USERMODELIST_SIZE; ++i) | |
1545 | { | |
1546 | if (FlagHas(&c_flags, userModeList[i].flag) && | |
1547 | userModeList[i].flag >= FLAG_GLOBAL_UMODES) | |
1548 | *m++ = userModeList[i].c; | |
1549 | } | |
1550 | ||
1551 | if (IsAccount(cptr)) | |
1552 | { | |
1553 | char* t = cli_user(cptr)->account; | |
1554 | ||
1555 | *m++ = ' '; | |
1556 | while ((*m++ = *t++)) | |
1557 | ; /* Empty loop */ | |
1558 | ||
1559 | if (cli_user(cptr)->acc_create) { | |
1560 | char nbuf[20]; | |
1561 | Debug((DEBUG_DEBUG, "Sending timestamped account in user mode for " | |
1562 | "account \"%s\"; timestamp %Tu", cli_user(cptr)->account, | |
1563 | cli_user(cptr)->acc_create)); | |
1564 | if(cli_user(cptr)->acc_id) { | |
1565 | ircd_snprintf(0, t = nbuf, sizeof(nbuf), ":%Tu:%lu", | |
1566 | cli_user(cptr)->acc_create, cli_user(cptr)->acc_id); | |
1567 | } else { | |
1568 | ircd_snprintf(0, t = nbuf, sizeof(nbuf), ":%Tu", | |
1569 | cli_user(cptr)->acc_create); | |
1570 | } | |
1571 | m--; /* back up over previous nul-termination */ | |
1572 | while ((*m++ = *t++)) | |
1573 | ; /* Empty loop */ | |
1574 | } | |
1575 | m--; /* Step back over the '\0' */ | |
1576 | } | |
1577 | ||
1578 | if (IsSetHost(cptr)) { | |
1579 | *m++ = ' '; | |
1580 | ircd_snprintf(0, m, USERLEN + HOSTLEN + 2, "%s@%s", cli_user(cptr)->username, | |
1581 | cli_user(cptr)->host); | |
1582 | } else | |
1583 | *m = '\0'; | |
1584 | return umodeBuf; /* Note: static buffer, gets | |
1585 | overwritten by send_umode() */ | |
1586 | } | |
1587 | ||
1588 | /** Send a mode change string for \a sptr to \a cptr. | |
1589 | * @param[in] cptr Destination of mode change message. | |
1590 | * @param[in] sptr User whose mode has changed. | |
1591 | * @param[in] old Pre-change set of modes for \a sptr. | |
1592 | * @param[in] sendset One of ALL_UMODES, SEND_UMODES_BUT_OPER, | |
1593 | * SEND_UMODES, to select which changed user modes to send. | |
1594 | */ | |
1595 | void send_umode(struct Client *cptr, struct Client *sptr, struct Flags *old, | |
1596 | int sendset) | |
1597 | { | |
1598 | int i; | |
1599 | int flag; | |
1600 | int needhost = 0; | |
1601 | char *m; | |
1602 | int what = MODE_NULL; | |
1603 | ||
1604 | /* | |
1605 | * Build a string in umodeBuf to represent the change in the user's | |
1606 | * mode between the new (cli_flags(sptr)) and 'old', but skipping | |
1607 | * the modes indicated by sendset. | |
1608 | */ | |
1609 | m = umodeBuf; | |
1610 | *m = '\0'; | |
1611 | for (i = 0; i < USERMODELIST_SIZE; ++i) | |
1612 | { | |
1613 | flag = userModeList[i].flag; | |
1614 | if (FlagHas(old, flag) | |
1615 | == HasFlag(sptr, flag)) | |
1616 | continue; | |
1617 | switch (sendset) | |
1618 | { | |
1619 | case ALL_UMODES: | |
1620 | break; | |
1621 | case SEND_UMODES_BUT_OPER: | |
1622 | if (flag == FLAG_OPER) | |
1623 | continue; | |
1624 | /* and fall through */ | |
1625 | case SEND_UMODES: | |
1626 | if (flag < FLAG_GLOBAL_UMODES) | |
1627 | continue; | |
1628 | break; | |
1629 | } | |
1630 | /* Special case for SETHOST.. */ | |
1631 | if (flag == FLAG_SETHOST) { | |
1632 | /* Don't send to users */ | |
1633 | if (cptr && MyUser(cptr)) | |
1634 | continue; | |
1635 | ||
1636 | /* If we're setting +h, add the parameter later */ | |
1637 | if (!FlagHas(old, flag)) | |
1638 | needhost++; | |
1639 | } | |
1640 | if (FlagHas(old, flag)) | |
1641 | { | |
1642 | if (what == MODE_DEL) | |
1643 | *m++ = userModeList[i].c; | |
1644 | else | |
1645 | { | |
1646 | what = MODE_DEL; | |
1647 | *m++ = '-'; | |
1648 | *m++ = userModeList[i].c; | |
1649 | } | |
1650 | } | |
1651 | else /* !FlagHas(old, flag) */ | |
1652 | { | |
1653 | if (what == MODE_ADD) | |
1654 | *m++ = userModeList[i].c; | |
1655 | else | |
1656 | { | |
1657 | what = MODE_ADD; | |
1658 | *m++ = '+'; | |
1659 | *m++ = userModeList[i].c; | |
1660 | } | |
1661 | } | |
1662 | } | |
1663 | if (needhost) { | |
1664 | *m++ = ' '; | |
1665 | ircd_snprintf(0, m, USERLEN + HOSTLEN + 1, "%s@%s", cli_user(sptr)->username, | |
1666 | cli_user(sptr)->host); | |
1667 | } else | |
1668 | *m = '\0'; | |
1669 | if (*umodeBuf && cptr) | |
1670 | sendcmdto_one(sptr, CMD_MODE, cptr, "%s %s", cli_name(sptr), umodeBuf); | |
1671 | } | |
1672 | ||
1673 | /** | |
1674 | * Check to see if this resembles a sno_mask. It is if 1) there is | |
1675 | * at least one digit and 2) The first digit occurs before the first | |
1676 | * alphabetic character. | |
1677 | * @param[in] word Word to check for sno_mask-ness. | |
1678 | * @return Non-zero if \a word looks like a server notice mask; zero if not. | |
1679 | */ | |
1680 | int is_snomask(char *word) | |
1681 | { | |
1682 | if (word) | |
1683 | { | |
1684 | for (; *word; word++) | |
1685 | if (IsDigit(*word)) | |
1686 | return 1; | |
1687 | else if (IsAlpha(*word)) | |
1688 | return 0; | |
1689 | } | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | /* | |
1694 | * Check to see if it resembles a valid hostmask. | |
1695 | */ | |
1696 | int is_hostmask(char *word) | |
1697 | { | |
1698 | int i = 0; | |
1699 | char *host; | |
1700 | ||
1701 | Debug((DEBUG_INFO, "is_hostmask() %s", word)); | |
1702 | ||
1703 | if (strlen(word) > (HOSTLEN + USERLEN + 1) || strlen(word) <= 0) | |
1704 | return 0; | |
1705 | ||
1706 | /* if a host is specified, make sure it's valid */ | |
1707 | host = strrchr(word, '@'); | |
1708 | if (host) { | |
1709 | if (strlen(++host) < 1) | |
1710 | return 0; | |
1711 | if (strlen(host) > HOSTLEN) | |
1712 | return 0; | |
1713 | } | |
1714 | ||
1715 | if (word) { | |
1716 | if ('@' == *word) /* no leading @'s */ | |
1717 | return 0; | |
1718 | ||
1719 | if ('#' == *word) { /* numeric index given? */ | |
1720 | for (word++; *word; word++) { | |
1721 | if (!IsDigit(*word)) | |
1722 | return 0; | |
1723 | } | |
1724 | return 1; | |
1725 | } | |
1726 | ||
1727 | /* normal hostmask, account for at most one '@' */ | |
1728 | for (; *word; word++) { | |
1729 | if ('@' == *word) { | |
1730 | i++; | |
1731 | continue; | |
1732 | } | |
1733 | if (!IsHostChar(*word)) | |
1734 | return 0; | |
1735 | } | |
1736 | return (1 < i) ? 0 : 1; /* no more than on '@' */ | |
1737 | } | |
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | /* | |
1742 | * IsVhost() - Check if given host is a valid spoofhost | |
1743 | * (ie: configured thru a S:line) | |
1744 | */ | |
1745 | static char *IsVhost(char *hostmask, int oper) | |
1746 | { | |
1747 | unsigned int i = 0, y = 0; | |
1748 | struct sline *sconf; | |
1749 | ||
1750 | Debug((DEBUG_INFO, "IsVhost() %s", hostmask)); | |
1751 | ||
1752 | if (EmptyString(hostmask)) | |
1753 | return NULL; | |
1754 | ||
1755 | /* spoofhost specified as index, ie: #27 */ | |
1756 | if ('#' == hostmask[0]) { | |
1757 | y = atoi(hostmask + 1); | |
1758 | for (i = 0, sconf = GlobalSList; sconf; sconf = sconf->next) { | |
1759 | if (!oper && EmptyString(sconf->passwd)) | |
1760 | continue; | |
1761 | if (y == ++i) | |
1762 | return sconf->spoofhost; | |
1763 | } | |
1764 | return NULL; | |
1765 | } | |
1766 | ||
1767 | /* spoofhost specified as host, ie: host.cc */ | |
1768 | for (sconf = GlobalSList; sconf; sconf = sconf->next) | |
1769 | if (strCasediff(hostmask, sconf->spoofhost) == 0) | |
1770 | return sconf->spoofhost; | |
1771 | ||
1772 | return NULL; | |
1773 | } | |
1774 | ||
1775 | /* | |
1776 | * IsVhostPass() - Check if given spoofhost has a password | |
1777 | * associated with it, and if, return the password (cleartext) | |
1778 | */ | |
1779 | static char *IsVhostPass(char *hostmask) | |
1780 | { | |
1781 | struct sline *sconf; | |
1782 | ||
1783 | Debug((DEBUG_INFO, "IsVhostPass() %s", hostmask)); | |
1784 | ||
1785 | if (EmptyString(hostmask)) | |
1786 | return NULL; | |
1787 | ||
1788 | for (sconf = GlobalSList; sconf; sconf = sconf->next) | |
1789 | if (strCasediff(hostmask, sconf->spoofhost) == 0) { | |
1790 | Debug((DEBUG_INFO, "sconf->passwd %s", sconf->passwd)); | |
1791 | return EmptyString(sconf->passwd) ? NULL : sconf->passwd; | |
1792 | } | |
1793 | ||
1794 | return NULL; | |
1795 | } | |
1796 | ||
1797 | /** Update snomask \a oldmask according to \a arg and \a what. | |
1798 | * @param[in] oldmask Original user mask. | |
1799 | * @param[in] arg Update string (either a number or '+'/'-' followed by a number). | |
1800 | * @param[in] what MODE_ADD if adding the mask. | |
1801 | * @return New value of service notice mask. | |
1802 | */ | |
1803 | unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what) | |
1804 | { | |
1805 | unsigned int sno_what; | |
1806 | unsigned int newmask; | |
1807 | if (*arg == '+') | |
1808 | { | |
1809 | arg++; | |
1810 | if (what == MODE_ADD) | |
1811 | sno_what = SNO_ADD; | |
1812 | else | |
1813 | sno_what = SNO_DEL; | |
1814 | } | |
1815 | else if (*arg == '-') | |
1816 | { | |
1817 | arg++; | |
1818 | if (what == MODE_ADD) | |
1819 | sno_what = SNO_DEL; | |
1820 | else | |
1821 | sno_what = SNO_ADD; | |
1822 | } | |
1823 | else | |
1824 | sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL; | |
1825 | /* pity we don't have strtoul everywhere */ | |
1826 | newmask = (unsigned int)atoi(arg); | |
1827 | if (sno_what == SNO_DEL) | |
1828 | newmask = oldmask & ~newmask; | |
1829 | else if (sno_what == SNO_ADD) | |
1830 | newmask |= oldmask; | |
1831 | return newmask; | |
1832 | } | |
1833 | ||
1834 | /** Remove \a cptr from the singly linked list \a list. | |
1835 | * @param[in] cptr Client to remove from list. | |
1836 | * @param[in,out] list Pointer to head of list containing \a cptr. | |
1837 | */ | |
1838 | static void delfrom_list(struct Client *cptr, struct SLink **list) | |
1839 | { | |
1840 | struct SLink* tmp; | |
1841 | struct SLink* prv = NULL; | |
1842 | ||
1843 | for (tmp = *list; tmp; tmp = tmp->next) { | |
1844 | if (tmp->value.cptr == cptr) { | |
1845 | if (prv) | |
1846 | prv->next = tmp->next; | |
1847 | else | |
1848 | *list = tmp->next; | |
1849 | free_link(tmp); | |
1850 | break; | |
1851 | } | |
1852 | prv = tmp; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | /** Set \a cptr's server notice mask, according to \a what. | |
1857 | * @param[in,out] cptr Client whose snomask is updating. | |
1858 | * @param[in] newmask Base value for new snomask. | |
1859 | * @param[in] what One of SNO_ADD, SNO_DEL, SNO_SET, to choose operation. | |
1860 | */ | |
1861 | void set_snomask(struct Client *cptr, unsigned int newmask, int what) | |
1862 | { | |
1863 | unsigned int oldmask, diffmask; /* unsigned please */ | |
1864 | int i; | |
1865 | struct SLink *tmp; | |
1866 | ||
1867 | oldmask = cli_snomask(cptr); | |
1868 | ||
1869 | if (what == SNO_ADD) | |
1870 | newmask |= oldmask; | |
1871 | else if (what == SNO_DEL) | |
1872 | newmask = oldmask & ~newmask; | |
1873 | else if (what != SNO_SET) /* absolute set, no math needed */ | |
1874 | sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what); | |
1875 | ||
1876 | newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER); | |
1877 | ||
1878 | diffmask = oldmask ^ newmask; | |
1879 | ||
1880 | for (i = 0; diffmask >> i; i++) { | |
1881 | if (((diffmask >> i) & 1)) | |
1882 | { | |
1883 | if (((newmask >> i) & 1)) | |
1884 | { | |
1885 | tmp = make_link(); | |
1886 | tmp->next = opsarray[i]; | |
1887 | tmp->value.cptr = cptr; | |
1888 | opsarray[i] = tmp; | |
1889 | } | |
1890 | else | |
1891 | /* not real portable :( */ | |
1892 | delfrom_list(cptr, &opsarray[i]); | |
1893 | } | |
1894 | } | |
1895 | cli_snomask(cptr) = newmask; | |
1896 | } | |
1897 | ||
1898 | /** Check whether \a sptr is allowed to send a message to \a acptr. | |
1899 | * If \a sptr is a remote user, it means some server has an outdated | |
1900 | * SILENCE list for \a acptr, so send the missing SILENCE mask(s) back | |
1901 | * in the direction of \a sptr. Skip the check if \a sptr is a server. | |
1902 | * @param[in] sptr Client trying to send a message. | |
1903 | * @param[in] acptr Destination of message. | |
1904 | * @return Non-zero if \a sptr is SILENCEd by \a acptr, zero if not. | |
1905 | */ | |
1906 | int is_silenced(struct Client *sptr, struct Client *acptr) | |
1907 | { | |
1908 | struct Ban *found; | |
1909 | struct User *user; | |
1910 | size_t buf_used, slen; | |
1911 | char buf[BUFSIZE]; | |
1912 | ||
1913 | if (IsServer(sptr) || !(user = cli_user(acptr)) | |
1914 | || !(found = find_ban(sptr, user->silence))) | |
1915 | return 0; | |
1916 | assert(!(found->flags & BAN_EXCEPTION)); | |
1917 | if (!MyConnect(sptr)) { | |
1918 | /* Buffer positive silence to send back. */ | |
1919 | buf_used = strlen(found->banstr); | |
1920 | memcpy(buf, found->banstr, buf_used); | |
1921 | /* Add exceptions to buffer. */ | |
1922 | for (found = user->silence; found; found = found->next) { | |
1923 | if (!(found->flags & BAN_EXCEPTION)) | |
1924 | continue; | |
1925 | slen = strlen(found->banstr); | |
1926 | if (buf_used + slen + 4 > 400) { | |
1927 | buf[buf_used] = '\0'; | |
1928 | sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr, buf); | |
1929 | buf_used = 0; | |
1930 | } | |
1931 | if (buf_used) | |
1932 | buf[buf_used++] = ','; | |
1933 | buf[buf_used++] = '+'; | |
1934 | buf[buf_used++] = '~'; | |
1935 | memcpy(buf + buf_used, found->banstr, slen); | |
1936 | buf_used += slen; | |
1937 | } | |
1938 | /* Flush silence buffer. */ | |
1939 | if (buf_used) { | |
1940 | buf[buf_used] = '\0'; | |
1941 | sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr, buf); | |
1942 | buf_used = 0; | |
1943 | } | |
1944 | } | |
1945 | return 1; | |
1946 | } | |
1947 | ||
1948 | /** Send RPL_ISUPPORT lines to \a cptr. | |
1949 | * @param[in] cptr Client to send ISUPPORT to. | |
1950 | * @return Zero. | |
1951 | */ | |
1952 | int | |
1953 | send_supported(struct Client *cptr) | |
1954 | { | |
1955 | char featurebuf[512]; | |
1956 | ||
1957 | ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES1, FEATURESVALUES1); | |
1958 | send_reply(cptr, RPL_ISUPPORT, featurebuf); | |
1959 | ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES2, FEATURESVALUES2); | |
1960 | send_reply(cptr, RPL_ISUPPORT, featurebuf); | |
1961 | ||
1962 | return 0; /* convenience return, if it's ever needed */ | |
1963 | } |