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Commit | Line | Data |
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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_nick.c: Sets a users nick. | |
4 | * | |
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 | |
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 2 of the License, or | |
12 | * (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "client.h" | |
27 | #include "hash.h" | |
4562c604 | 28 | #include "match.h" |
212380e3 AC |
29 | #include "ircd.h" |
30 | #include "numeric.h" | |
31 | #include "s_conf.h" | |
32 | #include "s_stats.h" | |
33 | #include "s_user.h" | |
34 | #include "hash.h" | |
35 | #include "whowas.h" | |
36 | #include "s_serv.h" | |
37 | #include "send.h" | |
38 | #include "channel.h" | |
4016731b | 39 | #include "logger.h" |
212380e3 AC |
40 | #include "msg.h" |
41 | #include "parse.h" | |
42 | #include "modules.h" | |
212380e3 AC |
43 | #include "packet.h" |
44 | #include "scache.h" | |
45 | #include "s_newconf.h" | |
46 | #include "monitor.h" | |
77d3d2db | 47 | #include "s_assert.h" |
212380e3 | 48 | |
3f7e0642 JT |
49 | /* Give all UID nicks the same TS. This ensures nick TS is always the same on |
50 | * all servers for each nick-user pair, also if a user with a UID nick changes | |
51 | * their nick but is collided again (the server detecting the collision will | |
52 | * not propagate the nick change further). -- jilles | |
53 | */ | |
54 | #define SAVE_NICKTS 100 | |
55 | ||
3c7d6fcc EM |
56 | static void mr_nick(struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
57 | static void m_nick(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
58 | static void mc_nick(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
59 | static void ms_nick(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
60 | static void ms_uid(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
61 | static void ms_euid(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
62 | static void ms_save(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
63 | static bool can_save(struct Client *); | |
212380e3 | 64 | static void save_user(struct Client *, struct Client *, struct Client *); |
ad35b2cd | 65 | static void bad_nickname(struct Client *, const char *); |
3c7d6fcc EM |
66 | static void change_remote_nick(struct Client *, struct Client *, time_t, |
67 | const char *, int); | |
68 | static bool clean_username(const char *); | |
69 | static bool clean_host(const char *); | |
70 | static bool clean_uid(const char *uid, const char *sid); | |
71 | ||
72 | static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); | |
73 | static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); | |
74 | static void register_client(struct Client *client_p, struct Client *server, | |
75 | const char *nick, time_t newts, int parc, const char *parv[]); | |
76 | static void perform_nick_collides(struct Client *, struct Client *, | |
77 | struct Client *, int, const char **, | |
78 | time_t, const char *, const char *); | |
79 | static void perform_nickchange_collides(struct Client *, struct Client *, | |
80 | struct Client *, int, const char **, time_t, const char *); | |
212380e3 AC |
81 | |
82 | struct Message nick_msgtab = { | |
7baa37a9 | 83 | "NICK", 0, 0, 0, 0, |
6c77f1f7 | 84 | {{mr_nick, 0}, {m_nick, 0}, {mc_nick, 3}, {ms_nick, 0}, mg_ignore, {m_nick, 0}} |
212380e3 AC |
85 | }; |
86 | struct Message uid_msgtab = { | |
7baa37a9 | 87 | "UID", 0, 0, 0, 0, |
212380e3 AC |
88 | {mg_ignore, mg_ignore, mg_ignore, {ms_uid, 9}, mg_ignore, mg_ignore} |
89 | }; | |
90 | struct Message euid_msgtab = { | |
7baa37a9 | 91 | "EUID", 0, 0, 0, 0, |
212380e3 AC |
92 | {mg_ignore, mg_ignore, mg_ignore, {ms_euid, 12}, mg_ignore, mg_ignore} |
93 | }; | |
94 | struct Message save_msgtab = { | |
7baa37a9 | 95 | "SAVE", 0, 0, 0, 0, |
212380e3 AC |
96 | {mg_ignore, mg_ignore, mg_ignore, {ms_save, 3}, mg_ignore, mg_ignore} |
97 | }; | |
98 | ||
99 | mapi_clist_av1 nick_clist[] = { &nick_msgtab, &uid_msgtab, &euid_msgtab, | |
100 | &save_msgtab, NULL }; | |
101 | ||
ee6dcb05 EM |
102 | static const char nick_desc[] = |
103 | "Provides the NICK client and server commands as well as the UID, EUID, and SAVE TS6 server commands"; | |
104 | ||
105 | DECLARE_MODULE_AV2(nick, NULL, NULL, nick_clist, NULL, NULL, NULL, NULL, nick_desc); | |
212380e3 | 106 | |
212380e3 | 107 | /* mr_nick() |
212380e3 AC |
108 | * parv[1] = nickname |
109 | */ | |
3c7d6fcc | 110 | static void |
428ca87b | 111 | mr_nick(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
112 | { |
113 | struct Client *target_p; | |
114 | char nick[NICKLEN]; | |
212380e3 AC |
115 | |
116 | if (strlen(client_p->id) == 3) | |
117 | { | |
118 | exit_client(client_p, client_p, client_p, "Mixing client and server protocol"); | |
3c7d6fcc | 119 | return; |
212380e3 AC |
120 | } |
121 | ||
fda96b89 | 122 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
123 | { |
124 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), | |
125 | me.name, EmptyString(source_p->name) ? "*" : source_p->name); | |
3c7d6fcc | 126 | return; |
212380e3 AC |
127 | } |
128 | ||
212380e3 | 129 | /* copy the nick and terminate it */ |
b583faf9 | 130 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
131 | |
132 | /* check the nickname is ok */ | |
133 | if(!clean_nick(nick, 1)) | |
134 | { | |
135 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
3dfaa671 | 136 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, parv[1]); |
3c7d6fcc | 137 | return; |
212380e3 AC |
138 | } |
139 | ||
140 | /* check if the nick is resv'd */ | |
141 | if(find_nick_resv(nick)) | |
142 | { | |
143 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), | |
144 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
3c7d6fcc | 145 | return; |
212380e3 AC |
146 | } |
147 | ||
a4bf26dd | 148 | if(rb_dictionary_find(nd_dict, nick)) |
212380e3 AC |
149 | { |
150 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
151 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
3c7d6fcc | 152 | return; |
212380e3 AC |
153 | } |
154 | ||
155 | if((target_p = find_named_client(nick)) == NULL) | |
156 | set_initial_nick(client_p, source_p, nick); | |
157 | else if(source_p == target_p) | |
158 | strcpy(source_p->name, nick); | |
159 | else | |
160 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, "*", nick); | |
212380e3 AC |
161 | } |
162 | ||
163 | /* m_nick() | |
212380e3 AC |
164 | * parv[1] = nickname |
165 | */ | |
3c7d6fcc | 166 | static void |
428ca87b | 167 | m_nick(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
168 | { |
169 | struct Client *target_p; | |
170 | char nick[NICKLEN]; | |
212380e3 | 171 | |
fda96b89 | 172 | if(parc < 2 || EmptyString(parv[1])) |
212380e3 AC |
173 | { |
174 | sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN), me.name, source_p->name); | |
3c7d6fcc | 175 | return; |
212380e3 AC |
176 | } |
177 | ||
212380e3 AC |
178 | /* mark end of grace period, to prevent nickflooding */ |
179 | if(!IsFloodDone(source_p)) | |
180 | flood_endgrace(source_p); | |
181 | ||
182 | /* terminate nick to NICKLEN, we dont want clean_nick() to error! */ | |
b583faf9 | 183 | rb_strlcpy(nick, parv[1], ConfigFileEntry.nicklen); |
212380e3 AC |
184 | |
185 | /* check the nickname is ok */ | |
186 | if(!clean_nick(nick, 1)) | |
187 | { | |
3dfaa671 | 188 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); |
3c7d6fcc | 189 | return; |
212380e3 AC |
190 | } |
191 | ||
192 | if(!IsExemptResv(source_p) && find_nick_resv(nick)) | |
193 | { | |
194 | sendto_one(source_p, form_str(ERR_ERRONEUSNICKNAME), me.name, source_p->name, nick); | |
3c7d6fcc | 195 | return; |
212380e3 AC |
196 | } |
197 | ||
a4bf26dd | 198 | if(rb_dictionary_find(nd_dict, nick)) |
212380e3 AC |
199 | { |
200 | sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE), | |
201 | me.name, EmptyString(source_p->name) ? "*" : source_p->name, nick); | |
3c7d6fcc | 202 | return; |
212380e3 AC |
203 | } |
204 | ||
205 | if((target_p = find_named_client(nick))) | |
206 | { | |
207 | /* If(target_p == source_p) the client is changing nicks between | |
208 | * equivalent nicknames ie: [nick] -> {nick} | |
209 | */ | |
210 | if(target_p == source_p) | |
211 | { | |
212 | /* check the nick isnt exactly the same */ | |
213 | if(strcmp(target_p->name, nick)) | |
214 | change_local_nick(client_p, source_p, nick, 1); | |
215 | ||
216 | } | |
217 | ||
218 | /* drop unregged client */ | |
219 | else if(IsUnknown(target_p)) | |
220 | { | |
221 | exit_client(NULL, target_p, &me, "Overridden"); | |
222 | change_local_nick(client_p, source_p, nick, 1); | |
223 | } | |
224 | else | |
3dfaa671 | 225 | sendto_one(source_p, form_str(ERR_NICKNAMEINUSE), me.name, source_p->name, nick); |
212380e3 | 226 | |
3c7d6fcc | 227 | return; |
212380e3 AC |
228 | } |
229 | else | |
230 | change_local_nick(client_p, source_p, nick, 1); | |
212380e3 AC |
231 | } |
232 | ||
6c77f1f7 | 233 | /* mc_nick() |
55abcbb2 | 234 | * |
212380e3 | 235 | * server -> server nick change |
212380e3 AC |
236 | * parv[1] = nickname |
237 | * parv[2] = TS when nick change | |
212380e3 | 238 | */ |
3c7d6fcc | 239 | static void |
428ca87b | 240 | mc_nick(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
241 | { |
242 | struct Client *target_p; | |
243 | time_t newts = 0; | |
244 | ||
245 | /* if nicks erroneous, or too long, kill */ | |
246 | if(!clean_nick(parv[1], 0)) | |
247 | { | |
ad35b2cd | 248 | bad_nickname(client_p, parv[1]); |
3c7d6fcc | 249 | return; |
212380e3 AC |
250 | } |
251 | ||
252 | newts = atol(parv[2]); | |
253 | target_p = find_named_client(parv[1]); | |
254 | ||
255 | /* if the nick doesnt exist, allow it and process like normal */ | |
256 | if(target_p == NULL) | |
257 | { | |
258 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
259 | } | |
260 | else if(IsUnknown(target_p)) | |
261 | { | |
262 | exit_client(NULL, target_p, &me, "Overridden"); | |
263 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
264 | } | |
265 | else if(target_p == source_p) | |
266 | { | |
267 | /* client changing case of nick */ | |
268 | if(strcmp(target_p->name, parv[1])) | |
269 | change_remote_nick(client_p, source_p, newts, parv[1], 1); | |
270 | } | |
271 | /* we've got a collision! */ | |
272 | else | |
273 | perform_nickchange_collides(source_p, client_p, target_p, | |
274 | parc, parv, newts, parv[1]); | |
212380e3 AC |
275 | } |
276 | ||
3c7d6fcc | 277 | static void |
428ca87b | 278 | ms_nick(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 | 279 | { |
6c77f1f7 | 280 | const char *nick, *server; |
212380e3 | 281 | |
6c77f1f7 JT |
282 | nick = parc > 1 ? parv[1] : "?"; |
283 | server = parc > 7 ? parv[7] : "?"; | |
212380e3 | 284 | |
6c77f1f7 JT |
285 | sendto_wallops_flags(UMODE_WALLOP, &me, |
286 | "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
287 | client_p->name, nick, server); | |
288 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
289 | ":%s WALLOPS :Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
290 | me.id, client_p->name, nick, server); | |
291 | ilog(L_SERVER, "Link %s cancelled, TS5 nickname %s on %s introduced (old server?)", | |
292 | client_p->name, nick, server); | |
212380e3 | 293 | |
6c77f1f7 | 294 | exit_client(client_p, client_p, &me, "TS5 nickname introduced"); |
212380e3 AC |
295 | } |
296 | ||
297 | /* ms_uid() | |
298 | * parv[1] - nickname | |
299 | * parv[2] - hops | |
300 | * parv[3] - TS | |
301 | * parv[4] - umodes | |
302 | * parv[5] - username | |
303 | * parv[6] - hostname | |
304 | * parv[7] - IP | |
305 | * parv[8] - UID | |
306 | * parv[9] - gecos | |
307 | */ | |
3c7d6fcc | 308 | static void |
428ca87b | 309 | ms_uid(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
310 | { |
311 | struct Client *target_p; | |
312 | time_t newts = 0; | |
4a5655b2 | 313 | char squitreason[120]; |
212380e3 AC |
314 | |
315 | newts = atol(parv[3]); | |
316 | ||
317 | if(parc != 10) | |
318 | { | |
319 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
320 | "Dropping server %s due to (invalid) command 'UID' " | |
321 | "with %d arguments (expecting 10)", client_p->name, parc); | |
322 | ilog(L_SERVER, "Excess parameters (%d) for command 'UID' from %s.", | |
323 | parc, client_p->name); | |
5203cba5 | 324 | snprintf(squitreason, sizeof squitreason, |
56023eb2 JT |
325 | "Excess parameters (%d) to %s command, expecting %d", |
326 | parc, "UID", 10); | |
327 | exit_client(client_p, client_p, client_p, squitreason); | |
3c7d6fcc | 328 | return; |
212380e3 AC |
329 | } |
330 | ||
331 | /* if nicks erroneous, or too long, kill */ | |
332 | if(!clean_nick(parv[1], 0)) | |
333 | { | |
ad35b2cd | 334 | bad_nickname(client_p, parv[1]); |
3c7d6fcc | 335 | return; |
212380e3 AC |
336 | } |
337 | ||
561d7efc | 338 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 339 | { |
5203cba5 | 340 | snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
341 | "Invalid UID %s for nick %s on %s/%s", |
342 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 343 | exit_client(client_p, client_p, client_p, squitreason); |
3c7d6fcc | 344 | return; |
212380e3 AC |
345 | } |
346 | ||
4a5655b2 | 347 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 348 | { |
47adde3d | 349 | ServerStats.is_kill++; |
212380e3 | 350 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
351 | "Bad user@host: %s@%s From: %s(via %s)", |
352 | parv[5], parv[6], source_p->name, client_p->name); | |
353 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
3c7d6fcc | 354 | return; |
212380e3 AC |
355 | } |
356 | ||
357 | /* check length of clients gecos */ | |
358 | if(strlen(parv[9]) > REALLEN) | |
359 | { | |
360 | char *s = LOCAL_COPY(parv[9]); | |
361 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 362 | source_p->name, parv[1]); |
212380e3 AC |
363 | s[REALLEN] = '\0'; |
364 | parv[9] = s; | |
365 | } | |
366 | ||
367 | target_p = find_named_client(parv[1]); | |
368 | ||
369 | if(target_p == NULL) | |
370 | { | |
371 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
372 | } | |
373 | else if(IsUnknown(target_p)) | |
374 | { | |
375 | exit_client(NULL, target_p, &me, "Overridden"); | |
376 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
377 | } | |
378 | /* we've got a collision! */ | |
379 | else | |
380 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
381 | newts, parv[1], parv[8]); | |
212380e3 AC |
382 | } |
383 | ||
384 | /* ms_euid() | |
385 | * parv[1] - nickname | |
386 | * parv[2] - hops | |
387 | * parv[3] - TS | |
388 | * parv[4] - umodes | |
389 | * parv[5] - username | |
390 | * parv[6] - hostname | |
391 | * parv[7] - IP | |
392 | * parv[8] - UID | |
393 | * parv[9] - realhost | |
394 | * parv[10] - account | |
395 | * parv[11] - gecos | |
396 | */ | |
3c7d6fcc | 397 | static void |
428ca87b | 398 | ms_euid(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
399 | { |
400 | struct Client *target_p; | |
401 | time_t newts = 0; | |
4a5655b2 | 402 | char squitreason[120]; |
212380e3 AC |
403 | |
404 | newts = atol(parv[3]); | |
405 | ||
406 | if(parc != 12) | |
407 | { | |
408 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
409 | "Dropping server %s due to (invalid) command 'EUID' " | |
410 | "with %d arguments (expecting 12)", client_p->name, parc); | |
411 | ilog(L_SERVER, "Excess parameters (%d) for command 'EUID' from %s.", | |
412 | parc, client_p->name); | |
5203cba5 | 413 | snprintf(squitreason, sizeof squitreason, |
56023eb2 JT |
414 | "Excess parameters (%d) to %s command, expecting %d", |
415 | parc, "EUID", 12); | |
416 | exit_client(client_p, client_p, client_p, squitreason); | |
3c7d6fcc | 417 | return; |
212380e3 AC |
418 | } |
419 | ||
420 | /* if nicks erroneous, or too long, kill */ | |
421 | if(!clean_nick(parv[1], 0)) | |
422 | { | |
ad35b2cd | 423 | bad_nickname(client_p, parv[1]); |
3c7d6fcc | 424 | return; |
212380e3 AC |
425 | } |
426 | ||
561d7efc | 427 | if(!clean_uid(parv[8], source_p->id)) |
212380e3 | 428 | { |
5203cba5 | 429 | snprintf(squitreason, sizeof squitreason, |
e0c7937a JT |
430 | "Invalid UID %s for nick %s on %s/%s", |
431 | parv[8], parv[1], source_p->name, source_p->id); | |
4a5655b2 | 432 | exit_client(client_p, client_p, client_p, squitreason); |
3c7d6fcc | 433 | return; |
212380e3 AC |
434 | } |
435 | ||
4a5655b2 | 436 | if(!clean_username(parv[5]) || !clean_host(parv[6])) |
212380e3 | 437 | { |
47adde3d | 438 | ServerStats.is_kill++; |
212380e3 | 439 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
4a5655b2 JT |
440 | "Bad user@host: %s@%s From: %s(via %s)", |
441 | parv[5], parv[6], source_p->name, client_p->name); | |
442 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
3c7d6fcc | 443 | return; |
212380e3 AC |
444 | } |
445 | ||
446 | if(strcmp(parv[9], "*") && !clean_host(parv[9])) | |
447 | { | |
47adde3d | 448 | ServerStats.is_kill++; |
212380e3 AC |
449 | sendto_realops_snomask(SNO_DEBUG, L_ALL, |
450 | "Bad realhost: %s From: %s(via %s)", | |
451 | parv[9], source_p->name, client_p->name); | |
452 | sendto_one(client_p, ":%s KILL %s :%s (Bad user@host)", me.id, parv[8], me.name); | |
3c7d6fcc | 453 | return; |
212380e3 AC |
454 | } |
455 | ||
456 | /* check length of clients gecos */ | |
457 | if(strlen(parv[11]) > REALLEN) | |
458 | { | |
459 | char *s = LOCAL_COPY(parv[11]); | |
460 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "Long realname from server %s for %s", | |
3dfaa671 | 461 | source_p->name, parv[1]); |
212380e3 AC |
462 | s[REALLEN] = '\0'; |
463 | parv[11] = s; | |
464 | } | |
465 | ||
466 | target_p = find_named_client(parv[1]); | |
467 | ||
468 | if(target_p == NULL) | |
469 | { | |
470 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
471 | } | |
472 | else if(IsUnknown(target_p)) | |
473 | { | |
474 | exit_client(NULL, target_p, &me, "Overridden"); | |
475 | register_client(client_p, source_p, parv[1], newts, parc, parv); | |
476 | } | |
477 | /* we've got a collision! */ | |
478 | else | |
479 | perform_nick_collides(source_p, client_p, target_p, parc, parv, | |
480 | newts, parv[1], parv[8]); | |
212380e3 AC |
481 | } |
482 | ||
483 | /* ms_save() | |
484 | * parv[1] - UID | |
485 | * parv[2] - TS | |
486 | */ | |
3c7d6fcc | 487 | static void |
428ca87b | 488 | ms_save(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
489 | { |
490 | struct Client *target_p; | |
491 | ||
492 | target_p = find_id(parv[1]); | |
493 | if (target_p == NULL) | |
3c7d6fcc | 494 | return; |
212380e3 AC |
495 | if (!IsPerson(target_p)) |
496 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
497 | "Ignored SAVE message for non-person %s from %s", | |
498 | target_p->name, source_p->name); | |
499 | else if (IsDigit(target_p->name[0])) | |
500 | sendto_realops_snomask(SNO_DEBUG, L_ALL, | |
501 | "Ignored noop SAVE message for %s from %s", | |
502 | target_p->name, source_p->name); | |
503 | else if (target_p->tsinfo == atol(parv[2])) | |
504 | save_user(client_p, source_p, target_p); | |
505 | else | |
506 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
507 | "Ignored SAVE message for %s from %s", | |
508 | target_p->name, source_p->name); | |
212380e3 AC |
509 | } |
510 | ||
212380e3 AC |
511 | /* clean_username() |
512 | * | |
513 | * input - username to check | |
3c7d6fcc | 514 | * output - false if erroneous, else true |
212380e3 AC |
515 | * side effects - |
516 | */ | |
3c7d6fcc | 517 | static bool |
212380e3 AC |
518 | clean_username(const char *username) |
519 | { | |
520 | int len = 0; | |
521 | ||
522 | for(; *username; username++) | |
523 | { | |
524 | len++; | |
525 | ||
526 | if(!IsUserChar(*username)) | |
3c7d6fcc | 527 | return false; |
212380e3 AC |
528 | } |
529 | ||
530 | if(len > USERLEN) | |
3c7d6fcc | 531 | return false; |
212380e3 | 532 | |
3c7d6fcc | 533 | return true; |
212380e3 AC |
534 | } |
535 | ||
536 | /* clean_host() | |
537 | * | |
538 | * input - host to check | |
3c7d6fcc | 539 | * output - false if erroneous, else true |
212380e3 AC |
540 | * side effects - |
541 | */ | |
3c7d6fcc | 542 | static bool |
212380e3 AC |
543 | clean_host(const char *host) |
544 | { | |
545 | int len = 0; | |
546 | ||
547 | for(; *host; host++) | |
548 | { | |
549 | len++; | |
550 | ||
551 | if(!IsHostChar(*host)) | |
3c7d6fcc | 552 | return false; |
212380e3 AC |
553 | } |
554 | ||
555 | if(len > HOSTLEN) | |
3c7d6fcc | 556 | return false; |
212380e3 | 557 | |
3c7d6fcc | 558 | return true; |
212380e3 AC |
559 | } |
560 | ||
3c7d6fcc | 561 | static bool |
561d7efc | 562 | clean_uid(const char *uid, const char *sid) |
212380e3 AC |
563 | { |
564 | int len = 1; | |
565 | ||
561d7efc | 566 | if(strncmp(uid, sid, strlen(sid))) |
3c7d6fcc | 567 | return false; |
561d7efc | 568 | |
212380e3 | 569 | if(!IsDigit(*uid++)) |
3c7d6fcc | 570 | return false; |
212380e3 AC |
571 | |
572 | for(; *uid; uid++) | |
573 | { | |
574 | len++; | |
575 | ||
576 | if(!IsIdChar(*uid)) | |
3c7d6fcc | 577 | return false; |
212380e3 AC |
578 | } |
579 | ||
580 | if(len != IDLEN - 1) | |
3c7d6fcc | 581 | return false; |
212380e3 | 582 | |
3c7d6fcc | 583 | return true; |
212380e3 AC |
584 | } |
585 | ||
586 | static void | |
587 | set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick) | |
588 | { | |
0e7cb7e6 | 589 | char note[NICKLEN + 10]; |
212380e3 AC |
590 | |
591 | /* This had to be copied here to avoid problems.. */ | |
e3354945 | 592 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
593 | if(source_p->name[0]) |
594 | del_from_client_hash(source_p->name, source_p); | |
595 | ||
596 | strcpy(source_p->name, nick); | |
597 | add_to_client_hash(nick, source_p); | |
598 | ||
5203cba5 | 599 | snprintf(note, sizeof(note), "Nick: %s", nick); |
0e7cb7e6 | 600 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
601 | |
602 | if(source_p->flags & FLAGS_SENTUSER) | |
603 | { | |
212380e3 | 604 | /* got user, heres nick. */ |
21251822 | 605 | register_local_user(client_p, source_p); |
212380e3 AC |
606 | } |
607 | } | |
608 | ||
609 | static void | |
610 | change_local_nick(struct Client *client_p, struct Client *source_p, | |
611 | char *nick, int dosend) | |
612 | { | |
613 | struct Client *target_p; | |
637c4932 | 614 | rb_dlink_node *ptr, *next_ptr; |
212380e3 | 615 | struct Channel *chptr; |
0e7cb7e6 | 616 | char note[NICKLEN + 10]; |
212380e3 AC |
617 | int samenick; |
618 | ||
619 | if (dosend) | |
620 | { | |
621 | chptr = find_bannickchange_channel(source_p); | |
622 | if (chptr != NULL) | |
623 | { | |
624 | sendto_one_numeric(source_p, ERR_BANNICKCHANGE, | |
625 | form_str(ERR_BANNICKCHANGE), | |
626 | nick, chptr->chname); | |
627 | return; | |
628 | } | |
e3354945 | 629 | if((source_p->localClient->last_nick_change + ConfigFileEntry.max_nick_time) < rb_current_time()) |
212380e3 AC |
630 | source_p->localClient->number_of_nick_changes = 0; |
631 | ||
e3354945 | 632 | source_p->localClient->last_nick_change = rb_current_time(); |
212380e3 AC |
633 | source_p->localClient->number_of_nick_changes++; |
634 | ||
635 | if(ConfigFileEntry.anti_nick_flood && !IsOper(source_p) && | |
636 | source_p->localClient->number_of_nick_changes > ConfigFileEntry.max_nick_changes) | |
637 | { | |
638 | sendto_one(source_p, form_str(ERR_NICKTOOFAST), | |
639 | me.name, source_p->name, source_p->name, | |
640 | nick, ConfigFileEntry.max_nick_time); | |
641 | return; | |
642 | } | |
643 | } | |
644 | ||
645 | samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
646 | ||
647 | /* dont reset TS if theyre just changing case of nick */ | |
648 | if(!samenick) | |
649 | { | |
95ffa685 | 650 | /* force the TS to increase -- jilles */ |
e3354945 | 651 | if (source_p->tsinfo >= rb_current_time()) |
95ffa685 JT |
652 | source_p->tsinfo++; |
653 | else | |
e3354945 | 654 | source_p->tsinfo = rb_current_time(); |
212380e3 AC |
655 | monitor_signoff(source_p); |
656 | /* we only do bancache for local users -- jilles */ | |
657 | if(source_p->user) | |
658 | invalidate_bancache_user(source_p); | |
659 | } | |
660 | ||
661 | sendto_realops_snomask(SNO_NCHANGE, L_ALL, | |
662 | "Nick change: From %s to %s [%s@%s]", | |
663 | source_p->name, nick, source_p->username, source_p->host); | |
664 | ||
665 | /* send the nick change to the users channels */ | |
583f064f | 666 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
667 | source_p->name, source_p->username, source_p->host, nick); |
668 | ||
669 | /* send the nick change to servers.. */ | |
670 | if(source_p->user) | |
671 | { | |
b47f8a4f | 672 | whowas_add_history(source_p, 1); |
212380e3 AC |
673 | |
674 | if (dosend) | |
675 | { | |
676 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
677 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
678 | } |
679 | } | |
680 | ||
681 | /* Finally, add to hash */ | |
682 | del_from_client_hash(source_p->name, source_p); | |
683 | strcpy(source_p->name, nick); | |
684 | add_to_client_hash(nick, source_p); | |
685 | ||
686 | if(!samenick) | |
687 | monitor_signon(source_p); | |
688 | ||
689 | /* Make sure everyone that has this client on its accept list | |
55abcbb2 | 690 | * loses that reference. |
212380e3 AC |
691 | */ |
692 | /* we used to call del_all_accepts() here, but theres no real reason | |
693 | * to clear a clients own list of accepted clients. So just remove | |
694 | * them from everyone elses list --anfl | |
695 | */ | |
637c4932 | 696 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, source_p->on_allow_list.head) |
212380e3 AC |
697 | { |
698 | target_p = ptr->data; | |
699 | ||
555ac41f JT |
700 | rb_dlinkFindDestroy(source_p, &target_p->localClient->allow_list); |
701 | rb_dlinkDestroy(ptr, &source_p->on_allow_list); | |
212380e3 AC |
702 | } |
703 | ||
5203cba5 | 704 | snprintf(note, sizeof(note), "Nick: %s", nick); |
0e7cb7e6 | 705 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
706 | |
707 | return; | |
708 | } | |
709 | ||
710 | /* | |
711 | * change_remote_nick() | |
712 | */ | |
3c7d6fcc | 713 | static void |
212380e3 AC |
714 | change_remote_nick(struct Client *client_p, struct Client *source_p, |
715 | time_t newts, const char *nick, int dosend) | |
716 | { | |
717 | struct nd_entry *nd; | |
718 | int samenick = irccmp(source_p->name, nick) ? 0 : 1; | |
719 | ||
720 | /* client changing their nick - dont reset ts if its same */ | |
721 | if(!samenick) | |
722 | { | |
e3354945 | 723 | source_p->tsinfo = newts ? newts : rb_current_time(); |
212380e3 AC |
724 | monitor_signoff(source_p); |
725 | } | |
726 | ||
583f064f | 727 | sendto_common_channels_local(source_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s", |
212380e3 AC |
728 | source_p->name, source_p->username, source_p->host, nick); |
729 | ||
730 | if(source_p->user) | |
731 | { | |
b47f8a4f | 732 | whowas_add_history(source_p, 1); |
212380e3 AC |
733 | if (dosend) |
734 | { | |
735 | sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s NICK %s :%ld", | |
736 | use_id(source_p), nick, (long) source_p->tsinfo); | |
212380e3 AC |
737 | } |
738 | } | |
739 | ||
740 | del_from_client_hash(source_p->name, source_p); | |
741 | ||
742 | /* invalidate nick delay when a remote client uses the nick.. */ | |
a4bf26dd | 743 | if((nd = rb_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
744 | free_nd_entry(nd); |
745 | ||
746 | strcpy(source_p->name, nick); | |
747 | add_to_client_hash(nick, source_p); | |
748 | ||
749 | if(!samenick) | |
750 | monitor_signon(source_p); | |
751 | ||
752 | /* remove all accepts pointing to the client */ | |
753 | del_all_accepts(source_p); | |
212380e3 AC |
754 | } |
755 | ||
3c7d6fcc | 756 | static void |
212380e3 AC |
757 | perform_nick_collides(struct Client *source_p, struct Client *client_p, |
758 | struct Client *target_p, int parc, const char *parv[], | |
759 | time_t newts, const char *nick, const char *uid) | |
760 | { | |
761 | int sameuser; | |
762 | int use_save; | |
763 | const char *action; | |
764 | ||
765 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
766 | uid != NULL && can_save(source_p); | |
767 | action = use_save ? "saved" : "killed"; | |
768 | ||
769 | /* if we dont have a ts, or their TS's are the same, kill both */ | |
770 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo)) | |
771 | { | |
9d107a71 | 772 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
773 | "Nick collision on %s(%s <- %s)(both %s)", |
774 | target_p->name, target_p->from->name, client_p->name, action); | |
775 | ||
776 | if (use_save) | |
777 | { | |
778 | save_user(&me, &me, target_p); | |
47adde3d | 779 | ServerStats.is_save++; |
212380e3 AC |
780 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, |
781 | uid, (long)newts); | |
782 | register_client(client_p, source_p, | |
3f7e0642 | 783 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
784 | } |
785 | else | |
786 | { | |
787 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
788 | form_str(ERR_NICKCOLLISION), target_p->name); | |
789 | ||
790 | /* if the new client being introduced has a UID, we need to | |
791 | * issue a KILL for it.. | |
792 | */ | |
793 | if(uid) | |
794 | sendto_one(client_p, ":%s KILL %s :%s (Nick collision (new))", | |
795 | me.id, uid, me.name); | |
796 | ||
797 | /* we then need to KILL the old client everywhere */ | |
798 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (new))", me.name); | |
47adde3d | 799 | ServerStats.is_kill++; |
212380e3 AC |
800 | |
801 | target_p->flags |= FLAGS_KILLED; | |
802 | exit_client(client_p, target_p, &me, "Nick collision (new)"); | |
803 | } | |
3c7d6fcc | 804 | return; |
212380e3 AC |
805 | } |
806 | /* the timestamps are different */ | |
807 | else | |
808 | { | |
809 | sameuser = (target_p->user) && !irccmp(target_p->username, parv[5]) | |
810 | && !irccmp(target_p->host, parv[6]); | |
811 | ||
812 | if((sameuser && newts < target_p->tsinfo) || | |
813 | (!sameuser && newts > target_p->tsinfo)) | |
814 | { | |
815 | /* if we have a UID, then we need to issue a KILL, | |
816 | * otherwise we do nothing and hope that the other | |
817 | * client will collide it.. | |
818 | */ | |
819 | if (use_save) | |
820 | { | |
821 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
822 | uid, (long)newts); | |
823 | register_client(client_p, source_p, | |
3f7e0642 | 824 | uid, SAVE_NICKTS, parc, parv); |
212380e3 AC |
825 | } |
826 | else if(uid) | |
827 | sendto_one(client_p, | |
828 | ":%s KILL %s :%s (Nick collision (new))", | |
829 | me.id, uid, me.name); | |
3c7d6fcc | 830 | return; |
212380e3 AC |
831 | } |
832 | else | |
833 | { | |
834 | if(sameuser) | |
9d107a71 | 835 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
836 | "Nick collision on %s(%s <- %s)(older %s)", |
837 | target_p->name, target_p->from->name, | |
838 | client_p->name, action); | |
839 | else | |
9d107a71 | 840 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
841 | "Nick collision on %s(%s <- %s)(newer %s)", |
842 | target_p->name, target_p->from->name, | |
843 | client_p->name, action); | |
844 | ||
845 | if (use_save) | |
846 | { | |
47adde3d | 847 | ServerStats.is_save++; |
212380e3 AC |
848 | save_user(&me, &me, target_p); |
849 | } | |
850 | else | |
851 | { | |
47adde3d | 852 | ServerStats.is_kill++; |
212380e3 AC |
853 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
854 | form_str(ERR_NICKCOLLISION), target_p->name); | |
855 | ||
856 | /* now we just need to kill the existing client */ | |
857 | kill_client_serv_butone(client_p, target_p, | |
858 | "%s (Nick collision (new))", me.name); | |
859 | ||
860 | target_p->flags |= FLAGS_KILLED; | |
861 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
862 | } | |
863 | ||
463947ad | 864 | register_client(client_p, source_p, |
212380e3 | 865 | nick, newts, parc, parv); |
212380e3 AC |
866 | } |
867 | } | |
868 | } | |
869 | ||
870 | ||
3c7d6fcc | 871 | static void |
212380e3 AC |
872 | perform_nickchange_collides(struct Client *source_p, struct Client *client_p, |
873 | struct Client *target_p, int parc, | |
874 | const char *parv[], time_t newts, const char *nick) | |
875 | { | |
876 | int sameuser; | |
877 | int use_save; | |
878 | const char *action; | |
879 | ||
880 | use_save = ConfigFileEntry.collision_fnc && can_save(target_p) && | |
881 | can_save(source_p); | |
882 | action = use_save ? "saved" : "killed"; | |
883 | ||
884 | /* its a client changing nick and causing a collide */ | |
885 | if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user) | |
886 | { | |
9d107a71 | 887 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
888 | "Nick change collision from %s to %s(%s <- %s)(both %s)", |
889 | source_p->name, target_p->name, target_p->from->name, | |
890 | client_p->name, action); | |
891 | ||
892 | if (use_save) | |
893 | { | |
47adde3d | 894 | ServerStats.is_save += 2; |
212380e3 AC |
895 | save_user(&me, &me, target_p); |
896 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
897 | source_p->id, (long)newts); | |
898 | /* don't send a redundant nick change */ | |
899 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 900 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
901 | } |
902 | else | |
903 | { | |
47adde3d | 904 | ServerStats.is_kill++; |
212380e3 AC |
905 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, |
906 | form_str(ERR_NICKCOLLISION), target_p->name); | |
907 | ||
908 | kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name); | |
909 | ||
47adde3d | 910 | ServerStats.is_kill++; |
212380e3 AC |
911 | |
912 | kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name); | |
913 | ||
914 | target_p->flags |= FLAGS_KILLED; | |
915 | exit_client(NULL, target_p, &me, "Nick collision(new)"); | |
916 | source_p->flags |= FLAGS_KILLED; | |
917 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
918 | } | |
3c7d6fcc | 919 | return; |
212380e3 AC |
920 | } |
921 | else | |
922 | { | |
923 | sameuser = !irccmp(target_p->username, source_p->username) && | |
924 | !irccmp(target_p->host, source_p->host); | |
925 | ||
926 | if((sameuser && newts < target_p->tsinfo) || | |
927 | (!sameuser && newts > target_p->tsinfo)) | |
928 | { | |
929 | if(sameuser) | |
9d107a71 | 930 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
931 | "Nick change collision from %s to %s(%s <- %s)(older %s)", |
932 | source_p->name, target_p->name, | |
933 | target_p->from->name, client_p->name, action); | |
934 | else | |
9d107a71 | 935 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
936 | "Nick change collision from %s to %s(%s <- %s)(newer %s)", |
937 | source_p->name, target_p->name, | |
938 | target_p->from->name, client_p->name, action); | |
939 | ||
940 | if (use_save) | |
941 | { | |
47adde3d | 942 | ServerStats.is_save++; |
212380e3 AC |
943 | /* can't broadcast a SAVE because the |
944 | * nickchange has happened at client_p | |
945 | * but not in other directions -- jilles */ | |
946 | sendto_one(client_p, ":%s SAVE %s %ld", me.id, | |
947 | source_p->id, (long)newts); | |
212380e3 AC |
948 | /* send a :<id> NICK <id> <ts> (!) */ |
949 | if (!IsDigit(source_p->name[0])) | |
3f7e0642 | 950 | change_remote_nick(client_p, source_p, SAVE_NICKTS, source_p->id, 1); |
212380e3 AC |
951 | } |
952 | else | |
953 | { | |
47adde3d | 954 | ServerStats.is_kill++; |
212380e3 | 955 | |
ce782b68 JT |
956 | sendto_one_numeric(source_p, ERR_NICKCOLLISION, |
957 | form_str(ERR_NICKCOLLISION), source_p->name); | |
212380e3 AC |
958 | |
959 | /* kill the client issuing the nickchange */ | |
960 | kill_client_serv_butone(client_p, source_p, | |
961 | "%s (Nick change collision)", me.name); | |
962 | ||
963 | source_p->flags |= FLAGS_KILLED; | |
964 | ||
965 | if(sameuser) | |
966 | exit_client(client_p, source_p, &me, "Nick collision(old)"); | |
967 | else | |
968 | exit_client(client_p, source_p, &me, "Nick collision(new)"); | |
969 | } | |
3c7d6fcc | 970 | return; |
212380e3 AC |
971 | } |
972 | else | |
973 | { | |
974 | if(sameuser) | |
9d107a71 | 975 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
976 | "Nick collision on %s(%s <- %s)(older %s)", |
977 | target_p->name, target_p->from->name, | |
978 | client_p->name, action); | |
979 | else | |
9d107a71 | 980 | sendto_realops_snomask(SNO_SKILL, L_ALL, |
212380e3 AC |
981 | "Nick collision on %s(%s <- %s)(newer %s)", |
982 | target_p->name, target_p->from->name, | |
983 | client_p->name, action); | |
984 | ||
985 | if (use_save) | |
986 | { | |
47adde3d | 987 | ServerStats.is_save++; |
212380e3 AC |
988 | save_user(&me, &me, target_p); |
989 | } | |
990 | else | |
991 | { | |
992 | sendto_one_numeric(target_p, ERR_NICKCOLLISION, | |
993 | form_str(ERR_NICKCOLLISION), target_p->name); | |
994 | ||
995 | /* kill the client who existed before hand */ | |
996 | kill_client_serv_butone(client_p, target_p, "%s (Nick collision)", me.name); | |
997 | ||
47adde3d | 998 | ServerStats.is_kill++; |
212380e3 AC |
999 | |
1000 | target_p->flags |= FLAGS_KILLED; | |
1001 | (void) exit_client(client_p, target_p, &me, "Nick collision"); | |
1002 | } | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | change_remote_nick(client_p, source_p, newts, nick, 1); | |
212380e3 AC |
1007 | } |
1008 | ||
3c7d6fcc | 1009 | static void |
212380e3 AC |
1010 | register_client(struct Client *client_p, struct Client *server, |
1011 | const char *nick, time_t newts, int parc, const char *parv[]) | |
1012 | { | |
1013 | struct Client *source_p; | |
1014 | struct User *user; | |
1015 | struct nd_entry *nd; | |
1016 | const char *m; | |
1017 | int flag; | |
1018 | ||
1019 | source_p = make_client(client_p); | |
1020 | user = make_user(source_p); | |
0e7cb7e6 | 1021 | rb_dlinkAddTail(source_p, &source_p->node, &global_client_list); |
212380e3 AC |
1022 | |
1023 | source_p->hopcount = atoi(parv[2]); | |
1024 | source_p->tsinfo = newts; | |
1025 | ||
1026 | strcpy(source_p->name, nick); | |
f427c8b0 VY |
1027 | rb_strlcpy(source_p->username, parv[5], sizeof(source_p->username)); |
1028 | rb_strlcpy(source_p->host, parv[6], sizeof(source_p->host)); | |
1029 | rb_strlcpy(source_p->orighost, source_p->host, sizeof(source_p->orighost)); | |
212380e3 AC |
1030 | |
1031 | if(parc == 12) | |
1032 | { | |
f427c8b0 VY |
1033 | rb_strlcpy(source_p->info, parv[11], sizeof(source_p->info)); |
1034 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1035 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1036 | add_to_id_hash(source_p->id, source_p); |
1037 | if (strcmp(parv[9], "*")) | |
1038 | { | |
f427c8b0 | 1039 | rb_strlcpy(source_p->orighost, parv[9], sizeof(source_p->orighost)); |
212380e3 AC |
1040 | if (irccmp(source_p->host, source_p->orighost)) |
1041 | SetDynSpoof(source_p); | |
1042 | } | |
1043 | if (strcmp(parv[10], "*")) | |
f427c8b0 | 1044 | rb_strlcpy(source_p->user->suser, parv[10], sizeof(source_p->user->suser)); |
212380e3 AC |
1045 | } |
1046 | else if(parc == 10) | |
1047 | { | |
f427c8b0 VY |
1048 | rb_strlcpy(source_p->info, parv[9], sizeof(source_p->info)); |
1049 | rb_strlcpy(source_p->sockhost, parv[7], sizeof(source_p->sockhost)); | |
1050 | rb_strlcpy(source_p->id, parv[8], sizeof(source_p->id)); | |
212380e3 AC |
1051 | add_to_id_hash(source_p->id, source_p); |
1052 | } | |
1053 | else | |
1054 | { | |
463947ad | 1055 | s_assert(0); |
212380e3 AC |
1056 | } |
1057 | ||
1058 | /* remove any nd entries for this nick */ | |
a4bf26dd | 1059 | if((nd = rb_dictionary_retrieve(nd_dict, nick))) |
212380e3 AC |
1060 | free_nd_entry(nd); |
1061 | ||
1062 | add_to_client_hash(nick, source_p); | |
66b4a7ae | 1063 | add_to_hostname_hash(source_p->orighost, source_p); |
212380e3 AC |
1064 | monitor_signon(source_p); |
1065 | ||
1066 | m = &parv[4][1]; | |
1067 | while(*m) | |
1068 | { | |
1069 | flag = user_modes[(unsigned char) *m]; | |
1070 | ||
1071 | if(flag & UMODE_SERVICE) | |
1072 | { | |
1073 | int hit = 0; | |
5b96d9a6 | 1074 | rb_dlink_node *ptr; |
212380e3 | 1075 | |
5b96d9a6 | 1076 | RB_DLINK_FOREACH(ptr, service_list.head) |
212380e3 | 1077 | { |
c88cdb00 | 1078 | if(!irccmp((const char *) ptr->data, server->name)) |
212380e3 AC |
1079 | { |
1080 | hit++; | |
1081 | break; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | if(!hit) | |
1086 | { | |
1087 | m++; | |
1088 | continue; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* increment +i count if theyre invis */ | |
1093 | if(!(source_p->umodes & UMODE_INVISIBLE) && (flag & UMODE_INVISIBLE)) | |
1094 | Count.invisi++; | |
1095 | ||
1096 | /* increment opered count if theyre opered */ | |
1097 | if(!(source_p->umodes & UMODE_OPER) && (flag & UMODE_OPER)) | |
1098 | Count.oper++; | |
1099 | ||
1100 | source_p->umodes |= flag; | |
1101 | m++; | |
1102 | } | |
1103 | ||
1104 | if(IsOper(source_p) && !IsService(source_p)) | |
0e7cb7e6 | 1105 | rb_dlinkAddAlloc(source_p, &oper_list); |
212380e3 AC |
1106 | |
1107 | SetRemoteClient(source_p); | |
1108 | ||
1109 | if(++Count.total > Count.max_tot) | |
1110 | Count.max_tot = Count.total; | |
1111 | ||
64449595 | 1112 | source_p->servptr = server; |
212380e3 | 1113 | |
0e7cb7e6 | 1114 | rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users); |
212380e3 | 1115 | |
212380e3 AC |
1116 | call_hook(h_new_remote_user, source_p); |
1117 | ||
6287d57f | 1118 | introduce_client(client_p, source_p, user, nick, parc == 12); |
212380e3 AC |
1119 | } |
1120 | ||
1121 | /* Check if we can do SAVE. target_p can be a client to save or a | |
1122 | * server introducing a client -- jilles */ | |
3c7d6fcc | 1123 | static bool |
212380e3 AC |
1124 | can_save(struct Client *target_p) |
1125 | { | |
1126 | struct Client *serv_p; | |
1127 | ||
1128 | if (MyClient(target_p)) | |
3c7d6fcc | 1129 | return true; |
212380e3 | 1130 | if (!has_id(target_p)) |
3c7d6fcc | 1131 | return false; |
212380e3 AC |
1132 | serv_p = IsServer(target_p) ? target_p : target_p->servptr; |
1133 | while (serv_p != NULL && serv_p != &me) | |
1134 | { | |
1135 | if (!(serv_p->serv->caps & CAP_SAVE)) | |
3c7d6fcc | 1136 | return false; |
212380e3 AC |
1137 | serv_p = serv_p->servptr; |
1138 | } | |
1139 | return serv_p == &me; | |
1140 | } | |
1141 | ||
1142 | static void | |
1143 | save_user(struct Client *client_p, struct Client *source_p, | |
1144 | struct Client *target_p) | |
1145 | { | |
1146 | if (!MyConnect(target_p) && (!has_id(target_p) || !IsCapable(target_p->from, CAP_SAVE))) | |
1147 | { | |
1148 | /* This shouldn't happen */ | |
1149 | /* Note we only need SAVE support in this direction */ | |
1150 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1151 | "Killed %s!%s@%s for nick collision detected by %s (%s does not support SAVE)", | |
1152 | target_p->name, target_p->username, target_p->host, source_p->name, target_p->from->name); | |
1153 | kill_client_serv_butone(NULL, target_p, "%s (Nick collision (no SAVE support))", me.name); | |
47adde3d | 1154 | ServerStats.is_kill++; |
212380e3 AC |
1155 | |
1156 | target_p->flags |= FLAGS_KILLED; | |
1157 | (void) exit_client(NULL, target_p, &me, "Nick collision (no SAVE support)"); | |
1158 | return; | |
1159 | } | |
1160 | sendto_server(client_p, NULL, CAP_SAVE|CAP_TS6, NOCAPS, ":%s SAVE %s %ld", | |
1161 | source_p->id, target_p->id, (long)target_p->tsinfo); | |
1162 | sendto_server(client_p, NULL, CAP_TS6, CAP_SAVE, ":%s NICK %s :%ld", | |
3f7e0642 | 1163 | target_p->id, target_p->id, (long)SAVE_NICKTS); |
212380e3 AC |
1164 | if (!IsMe(client_p)) |
1165 | sendto_realops_snomask(SNO_SKILL, L_ALL, | |
1166 | "Received SAVE message for %s from %s", | |
1167 | target_p->name, source_p->name); | |
1168 | if (MyClient(target_p)) | |
1169 | { | |
1170 | sendto_one_numeric(target_p, RPL_SAVENICK, | |
1171 | form_str(RPL_SAVENICK), target_p->id); | |
1172 | change_local_nick(target_p, target_p, target_p->id, 0); | |
3f7e0642 | 1173 | target_p->tsinfo = SAVE_NICKTS; |
212380e3 AC |
1174 | } |
1175 | else | |
3f7e0642 | 1176 | change_remote_nick(target_p, target_p, SAVE_NICKTS, target_p->id, 0); |
212380e3 | 1177 | } |
ad35b2cd JT |
1178 | |
1179 | static void bad_nickname(struct Client *client_p, const char *nick) | |
1180 | { | |
1181 | char squitreason[100]; | |
1182 | ||
1183 | sendto_wallops_flags(UMODE_WALLOP, &me, | |
1184 | "Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1185 | client_p->name, nick); | |
1186 | sendto_server(NULL, NULL, CAP_TS6, NOCAPS, | |
1187 | ":%s WALLOPS :Squitting %s because of bad nickname %s (NICKLEN mismatch?)", | |
1188 | me.id, client_p->name, nick); | |
4dd5d304 JT |
1189 | ilog(L_SERVER, "Link %s cancelled, bad nickname %s sent (NICKLEN mismatch?)", |
1190 | client_p->name, nick); | |
ad35b2cd | 1191 | |
5203cba5 | 1192 | snprintf(squitreason, sizeof squitreason, |
ad35b2cd JT |
1193 | "Bad nickname introduced [%s]", nick); |
1194 | exit_client(client_p, client_p, &me, squitreason); | |
1195 | } |