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[solanum.git] / ircd / s_user.c
1 /*
2 * ircd-ratbox: A slightly useful ircd.
3 * s_user.c: User related functions.
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
23 */
24
25 #include "stdinc.h"
26 #include "s_user.h"
27 #include "channel.h"
28 #include "class.h"
29 #include "client.h"
30 #include "hash.h"
31 #include "match.h"
32 #include "ircd.h"
33 #include "listener.h"
34 #include "msg.h"
35 #include "numeric.h"
36 #include "s_conf.h"
37 #include "s_newconf.h"
38 #include "logger.h"
39 #include "s_serv.h"
40 #include "s_stats.h"
41 #include "scache.h"
42 #include "send.h"
43 #include "supported.h"
44 #include "whowas.h"
45 #include "packet.h"
46 #include "reject.h"
47 #include "cache.h"
48 #include "hook.h"
49 #include "monitor.h"
50 #include "snomask.h"
51 #include "substitution.h"
52 #include "chmode.h"
53 #include "s_assert.h"
54
55 static void report_and_set_user_flags(struct Client *, struct ConfItem *);
56 void user_welcome(struct Client *source_p);
57
58 char umodebuf[128];
59
60 static int orphaned_umodes = 0;
61 int user_modes[256] = {
62 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
63 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
64 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
65 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
66 0, /* @ */
67 0, /* A */
68 0, /* B */
69 0, /* C */
70 UMODE_DEAF, /* D */
71 0, /* E */
72 0, /* F */
73 0, /* G */
74 0, /* H */
75 0, /* I */
76 0, /* J */
77 0, /* K */
78 0, /* L */
79 0, /* M */
80 0, /* N */
81 0, /* O */
82 0, /* P */
83 UMODE_NOFORWARD, /* Q */
84 0, /* R */
85 UMODE_SERVICE, /* S */
86 0, /* T */
87 0, /* U */
88 0, /* V */
89 0, /* W */
90 0, /* X */
91 0, /* Y */
92 UMODE_SECURE, /* Z */
93 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
94 UMODE_ADMIN, /* a */
95 0, /* b */
96 0, /* c */
97 0, /* d */
98 0, /* e */
99 0, /* f */
100 0, /* g */
101 0, /* h */
102 UMODE_INVISIBLE, /* i */
103 0, /* j */
104 0, /* k */
105 UMODE_LOCOPS, /* l */
106 0, /* m */
107 0, /* n */
108 UMODE_OPER, /* o */
109 0, /* p */
110 0, /* q */
111 0, /* r */
112 UMODE_SERVNOTICE, /* s */
113 0, /* t */
114 0, /* u */
115 0, /* v */
116 UMODE_WALLOP, /* w */
117 0, /* x */
118 0, /* y */
119 UMODE_OPERWALL, /* z */
120 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
121 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
122 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
123 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
124 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
125 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
126 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
127 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
128 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
129 };
130 /* *INDENT-ON* */
131
132 /*
133 * show_lusers -
134 *
135 * inputs - pointer to client
136 * output -
137 * side effects - display to client user counts etc.
138 */
139 void
140 show_lusers(struct Client *source_p)
141 {
142 if(rb_dlink_list_length(&lclient_list) > (unsigned long)MaxClientCount)
143 MaxClientCount = rb_dlink_list_length(&lclient_list);
144
145 if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) >
146 (unsigned long)MaxConnectionCount)
147 MaxConnectionCount = rb_dlink_list_length(&lclient_list) +
148 rb_dlink_list_length(&serv_list);
149
150 sendto_one_numeric(source_p, RPL_LUSERCLIENT, form_str(RPL_LUSERCLIENT),
151 (Count.total - Count.invisi),
152 Count.invisi,
153 (int)rb_dlink_list_length(&global_serv_list));
154
155 if(rb_dlink_list_length(&oper_list) > 0)
156 sendto_one_numeric(source_p, RPL_LUSEROP,
157 form_str(RPL_LUSEROP),
158 (int)rb_dlink_list_length(&oper_list));
159
160 if(rb_dlink_list_length(&unknown_list) > 0)
161 sendto_one_numeric(source_p, RPL_LUSERUNKNOWN,
162 form_str(RPL_LUSERUNKNOWN),
163 (int)rb_dlink_list_length(&unknown_list));
164
165 if(rb_dlink_list_length(&global_channel_list) > 0)
166 sendto_one_numeric(source_p, RPL_LUSERCHANNELS,
167 form_str(RPL_LUSERCHANNELS),
168 rb_dlink_list_length(&global_channel_list));
169
170 sendto_one_numeric(source_p, RPL_LUSERME, form_str(RPL_LUSERME),
171 (int)rb_dlink_list_length(&lclient_list),
172 (int)rb_dlink_list_length(&serv_list));
173
174 sendto_one_numeric(source_p, RPL_LOCALUSERS,
175 form_str(RPL_LOCALUSERS),
176 (int)rb_dlink_list_length(&lclient_list),
177 Count.max_loc,
178 (int)rb_dlink_list_length(&lclient_list),
179 Count.max_loc);
180
181 sendto_one_numeric(source_p, RPL_GLOBALUSERS, form_str(RPL_GLOBALUSERS),
182 Count.total, Count.max_tot,
183 Count.total, Count.max_tot);
184
185 sendto_one_numeric(source_p, RPL_STATSCONN,
186 form_str(RPL_STATSCONN),
187 MaxConnectionCount, MaxClientCount,
188 Count.totalrestartcount);
189 }
190
191 /* check if we should exit a client due to authd decision
192 * inputs - client server, client connecting
193 * outputs - true if exited, false if not
194 * side effects - messages/exits client if authd rejected and not exempt
195 */
196 static bool
197 authd_check(struct Client *client_p, struct Client *source_p)
198 {
199 struct ConfItem *aconf = source_p->localClient->att_conf;
200 rb_dlink_list varlist = { NULL, NULL, 0 };
201 bool reject = false;
202 char *reason;
203
204 if(source_p->preClient->auth.accepted == true)
205 return reject;
206
207 substitution_append_var(&varlist, "nick", source_p->name);
208 substitution_append_var(&varlist, "ip", source_p->sockhost);
209 substitution_append_var(&varlist, "host", source_p->host);
210 substitution_append_var(&varlist, "dnsbl-host", source_p->preClient->auth.data);
211 substitution_append_var(&varlist, "network-name", ServerInfo.network_name);
212 reason = substitution_parse(source_p->preClient->auth.reason, &varlist);
213
214 switch(source_p->preClient->auth.cause)
215 {
216 case 'B': /* DNSBL */
217 {
218 struct DNSBLEntryStats *stats;
219 char *dnsbl_name = source_p->preClient->auth.data;
220
221 if(dnsbl_stats != NULL)
222 if((stats = rb_dictionary_retrieve(dnsbl_stats, dnsbl_name)) != NULL)
223 stats->hits++;
224
225 if(IsExemptKline(source_p) || IsConfExemptDNSBL(aconf))
226 {
227 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s, but you are exempt",
228 source_p->sockhost, dnsbl_name);
229 break;
230 }
231
232 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
233 "Listed on DNSBL %s: %s (%s@%s) [%s] [%s]",
234 dnsbl_name, source_p->name, source_p->username, source_p->host,
235 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
236 source_p->info);
237
238 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
239 me.name, source_p->name, reason);
240
241 sendto_one_notice(source_p, ":*** Your IP address %s is listed in %s",
242 source_p->sockhost, dnsbl_name);
243 add_reject(source_p, NULL, NULL, NULL, "Banned (listed in a DNSBL)");
244 exit_client(client_p, source_p, &me, "Banned (listed in a DNSBL)");
245 reject = true;
246 }
247 break;
248 case 'O': /* OPM */
249 {
250 char *proxy = source_p->preClient->auth.data;
251 char *port = strrchr(proxy, ':');
252
253 if(port == NULL)
254 {
255 /* This shouldn't happen, better tell the ops... */
256 ierror("authd sent us a malformed OPM string %s", proxy);
257 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
258 "authd sent us a malformed OPM string %s", proxy);
259 break;
260 }
261
262 /* Terminate the proxy type */
263 *(port++) = '\0';
264
265 if(IsExemptKline(source_p) || IsConfExemptProxy(aconf))
266 {
267 sendto_one_notice(source_p,
268 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s), but you are exempt",
269 source_p->sockhost, proxy, port);
270 break;
271 }
272 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
273 "Open proxy %s/%s: %s (%s@%s) [%s] [%s]",
274 proxy, port,
275 source_p->name,
276 source_p->username, source_p->host,
277 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
278 source_p->info);
279
280 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
281 me.name, source_p->name, reason);
282
283 sendto_one_notice(source_p,
284 ":*** Your IP address %s has been detected as an open proxy (type %s, port %s)",
285 source_p->sockhost, proxy, port);
286 add_reject(source_p, NULL, NULL, NULL, "Banned (Open proxy)");
287 exit_client(client_p, source_p, &me, "Banned (Open proxy)");
288 reject = true;
289 }
290 break;
291 default: /* Unknown, but handle the case properly */
292 if(IsExemptKline(source_p))
293 {
294 sendto_one_notice(source_p,
295 ":*** You were rejected, but you are exempt (reason: %s)",
296 reason);
297 break;
298 }
299 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
300 "Rejected by authentication system (reason %s): %s (%s@%s) [%s] [%s]",
301 reason, source_p->name, source_p->username, source_p->host,
302 IsIPSpoof(source_p) ? "255.255.255.255" : source_p->sockhost,
303 source_p->info);
304
305 sendto_one(source_p, form_str(ERR_YOUREBANNEDCREEP),
306 me.name, source_p->name, reason);
307
308 sendto_one_notice(source_p, ":*** Rejected by authentication system: %s",
309 reason);
310 add_reject(source_p, NULL, NULL, NULL, "Banned (authentication system)");
311 exit_client(client_p, source_p, &me, "Banned (authentication system)");
312 reject = true;
313 break;
314 }
315
316 if(reject)
317 ServerStats.is_ref++;
318
319 substitution_free(&varlist);
320
321 return reject;
322 }
323
324 /*
325 ** register_local_user
326 ** This function is called when both NICK and USER messages
327 ** have been accepted for the client, in whatever order. Only
328 ** after this, is the USER message propagated.
329 **
330 ** NICK's must be propagated at once when received, although
331 ** it would be better to delay them too until full info is
332 ** available. Doing it is not so simple though, would have
333 ** to implement the following:
334 **
335 ** (actually it has been implemented already for a while) -orabidoo
336 **
337 ** 1) user telnets in and gives only "NICK foobar" and waits
338 ** 2) another user far away logs in normally with the nick
339 ** "foobar" (quite legal, as this server didn't propagate
340 ** it).
341 ** 3) now this server gets nick "foobar" from outside, but
342 ** has alread the same defined locally. Current server
343 ** would just issue "KILL foobar" to clean out dups. But,
344 ** this is not fair. It should actually request another
345 ** nick from local user or kill him/her...
346 */
347 int
348 register_local_user(struct Client *client_p, struct Client *source_p)
349 {
350 struct ConfItem *aconf, *xconf;
351 char tmpstr2[BUFSIZE];
352 char ipaddr[HOSTIPLEN];
353 char myusername[USERLEN+1];
354 int status;
355
356 s_assert(NULL != source_p);
357 s_assert(MyConnect(source_p));
358
359 if(source_p == NULL)
360 return -1;
361
362 if(IsAnyDead(source_p))
363 return -1;
364
365 if(ConfigFileEntry.ping_cookie)
366 {
367 if(!(source_p->flags & FLAGS_PINGSENT) && source_p->localClient->random_ping == 0)
368 {
369 source_p->localClient->random_ping = (uint32_t)(((rand() * rand()) << 1) | 1);
370 sendto_one(source_p, "PING :%08X",
371 (unsigned int) source_p->localClient->random_ping);
372 source_p->flags |= FLAGS_PINGSENT;
373 return -1;
374 }
375 if(!(source_p->flags & FLAGS_PING_COOKIE))
376 {
377 return -1;
378 }
379 }
380
381 /* hasnt finished client cap negotiation */
382 if(source_p->flags & FLAGS_CLICAP)
383 return -1;
384
385 /* Waiting on authd */
386 if(source_p->preClient->auth.cid)
387 return -1;
388
389 /* Set firsttime here so that post_registration_delay works from registration,
390 * rather than initial connection. */
391 source_p->localClient->firsttime = client_p->localClient->last = rb_current_time();
392
393 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
394 if(!IsGotId(source_p) && (strchr(source_p->username, '[') != NULL))
395 {
396 const char *p;
397 int i = 0;
398
399 p = source_p->username;
400
401 while(*p && i < USERLEN)
402 {
403 if(*p != '[')
404 myusername[i++] = *p;
405 p++;
406 }
407
408 myusername[i] = '\0';
409 }
410 else
411 rb_strlcpy(myusername, source_p->username, sizeof myusername);
412
413 if((status = check_client(client_p, source_p, myusername)) < 0)
414 return (CLIENT_EXITED);
415
416 /* Apply nick override */
417 if(*source_p->preClient->spoofnick)
418 {
419 char note[NAMELEN + 10];
420
421 del_from_client_hash(source_p->name, source_p);
422 rb_strlcpy(source_p->name, source_p->preClient->spoofnick, NICKLEN + 1);
423 add_to_client_hash(source_p->name, source_p);
424
425 snprintf(note, sizeof(note), "Nick: %s", source_p->name);
426 rb_note(source_p->localClient->F, note);
427 }
428
429 if(!valid_hostname(source_p->host))
430 {
431 sendto_one_notice(source_p, ":*** Notice -- You have an illegal character in your hostname");
432
433 rb_strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host));
434 }
435
436 aconf = source_p->localClient->att_conf;
437
438 if(aconf == NULL)
439 {
440 exit_client(client_p, source_p, &me, "*** Not Authorised");
441 return (CLIENT_EXITED);
442 }
443
444 if(IsConfSSLNeeded(aconf) && !IsSecure(source_p))
445 {
446 ServerStats.is_ref++;
447 sendto_one_notice(source_p, ":*** Notice -- You need to use SSL/TLS to use this server");
448 exit_client(client_p, source_p, &me, "Use SSL/TLS");
449 return (CLIENT_EXITED);
450 }
451
452 if(IsSCTP(source_p) && !IsConfAllowSCTP(aconf))
453 {
454 ServerStats.is_ref++;
455 sendto_one_notice(source_p, ":*** Notice -- You are not allowed to use SCTP on this server");
456 exit_client(client_p, source_p, &me, "SCTP not allowed");
457 return (CLIENT_EXITED);
458 }
459
460 if(!IsGotId(source_p))
461 {
462 const char *p;
463 int i = 0;
464
465 if(IsNeedIdentd(aconf))
466 {
467 ServerStats.is_ref++;
468 sendto_one_notice(source_p, ":*** Notice -- You need to install identd to use this server");
469 exit_client(client_p, source_p, &me, "Install identd");
470 return (CLIENT_EXITED);
471 }
472
473 /* dont replace username if its supposed to be spoofed --fl */
474 if(!IsConfDoSpoofIp(aconf) || !strchr(aconf->info.name, '@'))
475 {
476 p = myusername;
477
478 if(!IsNoTilde(aconf))
479 source_p->username[i++] = '~';
480
481 while (*p && i < USERLEN)
482 {
483 if(*p != '[')
484 source_p->username[i++] = *p;
485 p++;
486 }
487
488 source_p->username[i] = '\0';
489 }
490 }
491
492 if(IsNeedSasl(aconf) && !*source_p->user->suser)
493 {
494 ServerStats.is_ref++;
495 sendto_one_notice(source_p, ":*** Notice -- You need to identify via SASL to use this server");
496 exit_client(client_p, source_p, &me, "SASL access only");
497 return (CLIENT_EXITED);
498 }
499
500 /* password check */
501 if(!EmptyString(aconf->passwd))
502 {
503 const char *encr;
504
505 if(EmptyString(source_p->localClient->passwd))
506 encr = "";
507 else if(IsConfEncrypted(aconf))
508 encr = rb_crypt(source_p->localClient->passwd, aconf->passwd);
509 else
510 encr = source_p->localClient->passwd;
511
512 if(encr == NULL || strcmp(encr, aconf->passwd))
513 {
514 ServerStats.is_ref++;
515 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH), me.name, source_p->name);
516 exit_client(client_p, source_p, &me, "Bad Password");
517 return (CLIENT_EXITED);
518 }
519
520 /* clear password only if used now, otherwise send it
521 * to services -- jilles */
522 if(source_p->localClient->passwd)
523 {
524 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
525 rb_free(source_p->localClient->passwd);
526 source_p->localClient->passwd = NULL;
527 }
528 }
529
530 /* report and set flags (kline exempt etc.) as needed in source_p */
531 report_and_set_user_flags(source_p, aconf);
532
533 /* Limit clients */
534 /*
535 * We want to be able to have servers and F-line clients
536 * connect, so save room for "buffer" connections.
537 * Smaller servers may want to decrease this, and it should
538 * probably be just a percentage of the MAXCLIENTS...
539 * -Taner
540 */
541 /* Except "F:" clients */
542 if(rb_dlink_list_length(&lclient_list) >=
543 (unsigned long)GlobalSetOptions.maxclients && !IsConfExemptLimits(aconf))
544 {
545 sendto_realops_snomask(SNO_FULL, L_NETWIDE,
546 "Too many clients, rejecting %s[%s].", source_p->name, source_p->host);
547
548 ServerStats.is_ref++;
549 exit_client(client_p, source_p, &me, "Sorry, server is full - try later");
550 return (CLIENT_EXITED);
551 }
552
553 /* kline exemption extends to xline too */
554 if(!IsExemptKline(source_p) &&
555 (xconf = find_xline(source_p->info, 1)) != NULL)
556 {
557 ServerStats.is_ref++;
558 add_reject(source_p, xconf->host, NULL, NULL, NULL);
559 exit_client(client_p, source_p, &me, "Bad user info");
560 return CLIENT_EXITED;
561 }
562
563 /* authd rejection check */
564 if(authd_check(client_p, source_p))
565 return CLIENT_EXITED;
566
567 /* valid user name check */
568
569 if(!valid_username(source_p->username))
570 {
571 sendto_realops_snomask(SNO_REJ, L_NETWIDE,
572 "Invalid username: %s (%s@%s)",
573 source_p->name, source_p->username, source_p->host);
574 ServerStats.is_ref++;
575 sendto_one_notice(source_p, ":*** Your username is invalid. Please make sure that your username contains "
576 "only alphanumeric characters.");
577 sprintf(tmpstr2, "Invalid username [%s]", source_p->username);
578 exit_client(client_p, source_p, &me, tmpstr2);
579 return (CLIENT_EXITED);
580 }
581
582 /* end of valid user name check */
583
584 /* Store original hostname -- jilles */
585 rb_strlcpy(source_p->orighost, source_p->host, HOSTLEN + 1);
586
587 /* Spoof user@host */
588 if(*source_p->preClient->spoofuser)
589 rb_strlcpy(source_p->username, source_p->preClient->spoofuser, USERLEN + 1);
590 if(*source_p->preClient->spoofhost)
591 {
592 rb_strlcpy(source_p->host, source_p->preClient->spoofhost, HOSTLEN + 1);
593 if (irccmp(source_p->host, source_p->orighost))
594 SetDynSpoof(source_p);
595 }
596
597 source_p->umodes |= ConfigFileEntry.default_umodes & ~ConfigFileEntry.oper_only_umodes & ~orphaned_umodes;
598
599 call_hook(h_new_local_user, source_p);
600
601 /* If they have died in send_* or were thrown out by the
602 * new_local_user hook don't do anything. */
603 if(IsAnyDead(source_p))
604 return CLIENT_EXITED;
605
606 /* To avoid inconsistencies, do not abort the registration
607 * starting from this point -- jilles
608 */
609 rb_inet_ntop_sock((struct sockaddr *)&source_p->localClient->ip, ipaddr, sizeof(ipaddr));
610
611 sendto_realops_snomask(SNO_CCONN, L_ALL,
612 "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
613 source_p->name, source_p->username, source_p->orighost,
614 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
615 get_client_class(source_p), source_p->info);
616
617 sendto_realops_snomask(SNO_CCONNEXT, L_ALL,
618 "CLICONN %s %s %s %s %s %s 0 %s",
619 source_p->name, source_p->username, source_p->orighost,
620 show_ip(NULL, source_p) ? ipaddr : "255.255.255.255",
621 get_client_class(source_p),
622 /* mirc can sometimes send ips here */
623 show_ip(NULL, source_p) ? source_p->localClient->fullcaps : "<hidden> <hidden>",
624 source_p->info);
625
626 add_to_hostname_hash(source_p->orighost, source_p);
627
628 /* Allocate a UID if it was not previously allocated.
629 * If this already occured, it was probably during SASL auth...
630 */
631 if(!*source_p->id)
632 {
633 rb_strlcpy(source_p->id, generate_uid(), sizeof(source_p->id));
634 add_to_id_hash(source_p->id, source_p);
635 }
636
637 if (IsSecure(source_p))
638 source_p->umodes |= UMODE_SECURE;
639
640 if (source_p->umodes & UMODE_INVISIBLE)
641 Count.invisi++;
642
643 s_assert(!IsClient(source_p));
644 rb_dlinkMoveNode(&source_p->localClient->tnode, &unknown_list, &lclient_list);
645 SetClient(source_p);
646
647 source_p->servptr = &me;
648 rb_dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->users);
649
650 /* Increment our total user count here */
651 if(++Count.total > Count.max_tot)
652 Count.max_tot = Count.total;
653
654 Count.totalrestartcount++;
655
656 s_assert(source_p->localClient != NULL);
657
658 if(rb_dlink_list_length(&lclient_list) > (unsigned long)Count.max_loc)
659 {
660 Count.max_loc = rb_dlink_list_length(&lclient_list);
661 if(!(Count.max_loc % 10))
662 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
663 "New Max Local Clients: %d", Count.max_loc);
664 }
665
666 /* they get a reduced limit */
667 if(find_tgchange(source_p->sockhost))
668 source_p->localClient->targets_free = TGCHANGE_INITIAL_LOW;
669 else
670 source_p->localClient->targets_free = TGCHANGE_INITIAL;
671
672 monitor_signon(source_p);
673 user_welcome(source_p);
674
675 free_pre_client(source_p);
676
677 introduce_client(client_p, source_p, source_p->user, source_p->name, 1);
678 return 0;
679 }
680
681 /*
682 * introduce_clients
683 *
684 * inputs -
685 * output -
686 * side effects - This common function introduces a client to the rest
687 * of the net, either from a local client connect or
688 * from a remote connect.
689 */
690 void
691 introduce_client(struct Client *client_p, struct Client *source_p, struct User *user, const char *nick, int use_euid)
692 {
693 char ubuf[BUFSIZE];
694 struct Client *identifyservice_p;
695 char *p;
696 hook_data_umode_changed hdata;
697 hook_data_client hdata2;
698
699 if(MyClient(source_p))
700 send_umode(source_p, source_p, 0, ubuf);
701 else
702 send_umode(NULL, source_p, 0, ubuf);
703
704 if(!*ubuf)
705 {
706 ubuf[0] = '+';
707 ubuf[1] = '\0';
708 }
709
710 s_assert(has_id(source_p));
711
712 if (use_euid)
713 sendto_server(client_p, NULL, CAP_EUID | CAP_TS6, NOCAPS,
714 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
715 source_p->servptr->id, nick,
716 source_p->hopcount + 1,
717 (long) source_p->tsinfo, ubuf,
718 source_p->username, source_p->host,
719 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
720 source_p->id,
721 IsDynSpoof(source_p) ? source_p->orighost : "*",
722 EmptyString(source_p->user->suser) ? "*" : source_p->user->suser,
723 source_p->info);
724
725 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS,
726 ":%s UID %s %d %ld %s %s %s %s %s :%s",
727 source_p->servptr->id, nick,
728 source_p->hopcount + 1,
729 (long) source_p->tsinfo, ubuf,
730 source_p->username, source_p->host,
731 IsIPSpoof(source_p) ? "0" : source_p->sockhost,
732 source_p->id, source_p->info);
733
734 if(!EmptyString(source_p->certfp))
735 sendto_server(client_p, NULL, CAP_TS6, NOCAPS,
736 ":%s ENCAP * CERTFP :%s",
737 use_id(source_p), source_p->certfp);
738
739 if (IsDynSpoof(source_p))
740 {
741 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * REALHOST %s",
742 use_id(source_p), source_p->orighost);
743 }
744
745 if (!EmptyString(source_p->user->suser))
746 {
747 sendto_server(client_p, NULL, CAP_TS6, use_euid ? CAP_EUID : NOCAPS, ":%s ENCAP * LOGIN %s",
748 use_id(source_p), source_p->user->suser);
749 }
750
751 if(MyConnect(source_p) && source_p->localClient->passwd)
752 {
753 if (!EmptyString(ConfigFileEntry.identifyservice) &&
754 !EmptyString(ConfigFileEntry.identifycommand))
755 {
756 /* use user@server */
757 p = strchr(ConfigFileEntry.identifyservice, '@');
758 if (p != NULL)
759 identifyservice_p = find_named_client(p + 1);
760 else
761 identifyservice_p = NULL;
762 if (identifyservice_p != NULL)
763 {
764 if (!EmptyString(source_p->localClient->auth_user))
765 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s %s",
766 get_id(source_p, identifyservice_p),
767 ConfigFileEntry.identifyservice,
768 ConfigFileEntry.identifycommand,
769 source_p->localClient->auth_user,
770 source_p->localClient->passwd);
771 else
772 sendto_one(identifyservice_p, ":%s PRIVMSG %s :%s %s",
773 get_id(source_p, identifyservice_p),
774 ConfigFileEntry.identifyservice,
775 ConfigFileEntry.identifycommand,
776 source_p->localClient->passwd);
777 }
778 }
779 memset(source_p->localClient->passwd, 0, strlen(source_p->localClient->passwd));
780 rb_free(source_p->localClient->passwd);
781 source_p->localClient->passwd = NULL;
782 }
783
784 /* let modules providing usermodes know that we've got a new user,
785 * why is this here? -- well, some modules need to be able to send out new
786 * information about a client, so this was the best place to do it
787 * --nenolod
788 */
789 hdata.client = source_p;
790 hdata.oldumodes = 0;
791 hdata.oldsnomask = 0;
792 call_hook(h_umode_changed, &hdata);
793
794 /* On the other hand, some modules need to know when a client is
795 * being introduced, period.
796 * --gxti
797 */
798 hdata2.client = client_p;
799 hdata2.target = source_p;
800 call_hook(h_introduce_client, &hdata2);
801 }
802
803 /*
804 * valid_hostname - check hostname for validity
805 *
806 * Inputs - pointer to user
807 * Output - true if valid, false if not
808 * Side effects - NONE
809 *
810 * NOTE: this doesn't allow a hostname to begin with a dot and
811 * will not allow more dots than chars.
812 */
813 bool
814 valid_hostname(const char *hostname)
815 {
816 const char *p = hostname, *last_slash = 0;
817 int found_sep = 0;
818
819 s_assert(NULL != p);
820
821 if(hostname == NULL)
822 return false;
823
824 if(!strcmp(hostname, "localhost"))
825 return true;
826
827 if('.' == *p || ':' == *p || '/' == *p)
828 return false;
829
830 while (*p)
831 {
832 if(!IsHostChar(*p))
833 return false;
834 if(*p == '.' || *p == ':')
835 found_sep++;
836 else if(*p == '/')
837 {
838 found_sep++;
839 last_slash = p;
840 }
841 p++;
842 }
843
844 if(found_sep == 0)
845 return false;
846
847 if(last_slash && IsDigit(last_slash[1]))
848 return false;
849
850 return true;
851 }
852
853 /*
854 * valid_username - check username for validity
855 *
856 * Inputs - pointer to user
857 * Output - true if valid, false if not
858 * Side effects - NONE
859 *
860 * Absolutely always reject any '*' '!' '?' '@' in an user name
861 * reject any odd control characters names.
862 * Allow '.' in username to allow for "first.last"
863 * style of username
864 */
865 bool
866 valid_username(const char *username)
867 {
868 int dots = 0;
869 const char *p = username;
870
871 s_assert(NULL != p);
872
873 if(username == NULL)
874 return false;
875
876 if('~' == *p)
877 ++p;
878
879 /* reject usernames that don't start with an alphanum
880 * i.e. reject jokers who have '-@somehost' or '.@somehost'
881 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
882 */
883 if(!IsAlNum(*p))
884 return false;
885
886 while (*++p)
887 {
888 if((*p == '.') && ConfigFileEntry.dots_in_ident)
889 {
890 dots++;
891 if(dots > ConfigFileEntry.dots_in_ident)
892 return false;
893 if(!IsUserChar(p[1]))
894 return false;
895 }
896 else if(!IsUserChar(*p))
897 return false;
898 }
899 return true;
900 }
901
902 /* report_and_set_user_flags
903 *
904 * Inputs - pointer to source_p
905 * - pointer to aconf for this user
906 * Output - NONE
907 * Side effects -
908 * Report to user any special flags they are getting, and set them.
909 */
910
911 static void
912 report_and_set_user_flags(struct Client *source_p, struct ConfItem *aconf)
913 {
914 /* If this user is being spoofed, tell them so */
915 if(IsConfDoSpoofIp(aconf))
916 {
917 sendto_one_notice(source_p, ":*** Spoofing your IP");
918 }
919
920 /* If this user is in the exception class, Set it "E lined" */
921 if(IsConfExemptKline(aconf))
922 {
923 SetExemptKline(source_p);
924 sendto_one_notice(source_p, ":*** You are exempt from K/X lines");
925 }
926
927 if(IsConfExemptDNSBL(aconf))
928 /* kline exempt implies this, don't send both */
929 if(!IsConfExemptKline(aconf))
930 sendto_one_notice(source_p, ":*** You are exempt from DNSBL listings");
931
932 /* If this user is exempt from user limits set it F lined" */
933 if(IsConfExemptLimits(aconf))
934 {
935 sendto_one_notice(source_p, ":*** You are exempt from user limits");
936 }
937
938 if(IsConfExemptFlood(aconf))
939 {
940 SetExemptFlood(source_p);
941 sendto_one_notice(source_p, ":*** You are exempt from flood limits");
942 }
943
944 if(IsConfExemptSpambot(aconf))
945 {
946 SetExemptSpambot(source_p);
947 sendto_one_notice(source_p, ":*** You are exempt from spambot checks");
948 }
949
950 if(IsConfExemptJupe(aconf))
951 {
952 SetExemptJupe(source_p);
953 sendto_one_notice(source_p, ":*** You are exempt from juped channel warnings");
954 }
955
956 if(IsConfExemptResv(aconf))
957 {
958 SetExemptResv(source_p);
959 sendto_one_notice(source_p, ":*** You are exempt from resvs");
960 }
961
962 if(IsConfExemptShide(aconf))
963 {
964 SetExemptShide(source_p);
965 sendto_one_notice(source_p, ":*** You are exempt from serverhiding");
966 }
967
968 if(IsConfExtendChans(aconf))
969 {
970 SetExtendChans(source_p);
971 sendto_one_notice(source_p, ":*** You are exempt from normal channel limits");
972 }
973 }
974
975 void
976 report_priv_change(struct Client *client, struct PrivilegeSet *old, struct PrivilegeSet *new)
977 {
978 struct privset_diff diff = privilegeset_diff(old, new);
979
980 hook_data_priv_change hdata = {
981 .client = client,
982 .new = new,
983 .old = old,
984 .unchanged = diff.unchanged,
985 .added = diff.added,
986 .removed = diff.removed,
987 };
988 call_hook(h_priv_change, &hdata);
989 }
990
991 static void
992 show_other_user_mode(struct Client *source_p, struct Client *target_p)
993 {
994 int i;
995 char buf[BUFSIZE];
996 char *m;
997
998 m = buf;
999 *m++ = '+';
1000
1001 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
1002 if (target_p->umodes & user_modes[i])
1003 *m++ = (char) i;
1004 *m = '\0';
1005
1006 if (MyConnect(target_p) && target_p->snomask != 0)
1007 sendto_one_notice(source_p, ":Modes for %s are %s %s",
1008 target_p->name, buf,
1009 construct_snobuf(target_p->snomask));
1010 else
1011 sendto_one_notice(source_p, ":Modes for %s are %s",
1012 target_p->name, buf);
1013 }
1014
1015 /*
1016 * user_mode - set get current users mode
1017 *
1018 * m_umode() added 15/10/91 By Darren Reed.
1019 * parv[1] - username to change mode for
1020 * parv[2] - modes to change
1021 */
1022 int
1023 user_mode(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
1024 {
1025 int flag;
1026 int i;
1027 char *m;
1028 const char *pm;
1029 struct Client *target_p;
1030 int what, setflags;
1031 bool badflag = false; /* Only send one bad flag notice */
1032 bool showsnomask = false;
1033 unsigned int setsnomask;
1034 char buf[BUFSIZE];
1035 hook_data_umode_changed hdata;
1036
1037 what = MODE_ADD;
1038
1039 if(parc < 2)
1040 {
1041 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS), me.name, source_p->name, "MODE");
1042 return 0;
1043 }
1044
1045 if((target_p = MyClient(source_p) ? find_named_person(parv[1]) : find_person(parv[1])) == NULL)
1046 {
1047 if(MyConnect(source_p))
1048 sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL,
1049 form_str(ERR_NOSUCHCHANNEL), parv[1]);
1050 return 0;
1051 }
1052
1053 /* Dont know why these were commented out..
1054 * put them back using new sendto() funcs
1055 */
1056
1057 if(IsServer(source_p))
1058 {
1059 sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
1060 "*** Mode for User %s from %s", parv[1], source_p->name);
1061 return 0;
1062 }
1063
1064 if(source_p != target_p)
1065 {
1066 if (HasPrivilege(source_p, "auspex:umodes") && parc < 3)
1067 show_other_user_mode(source_p, target_p);
1068 else
1069 sendto_one(source_p, form_str(ERR_USERSDONTMATCH), me.name, source_p->name);
1070 return 0;
1071 }
1072
1073 if(parc < 3)
1074 {
1075 m = buf;
1076 *m++ = '+';
1077
1078 for (i = 0; i < 128; i++) /* >= 127 is extended ascii */
1079 if (source_p->umodes & user_modes[i])
1080 *m++ = (char) i;
1081
1082 *m = '\0';
1083 sendto_one_numeric(source_p, RPL_UMODEIS, form_str(RPL_UMODEIS), buf);
1084
1085 if (source_p->snomask != 0)
1086 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1087 construct_snobuf(source_p->snomask));
1088
1089 return 0;
1090 }
1091
1092 /* find flags already set for user */
1093 setflags = source_p->umodes;
1094 setsnomask = source_p->snomask;
1095
1096 /*
1097 * parse mode change string(s)
1098 */
1099 for (pm = parv[2]; *pm; pm++)
1100 switch (*pm)
1101 {
1102 case '+':
1103 what = MODE_ADD;
1104 break;
1105 case '-':
1106 what = MODE_DEL;
1107 break;
1108
1109 case 'o':
1110 if(what == MODE_ADD)
1111 {
1112 if(IsServer(client_p) && !IsOper(source_p))
1113 {
1114 ++Count.oper;
1115 SetOper(source_p);
1116 rb_dlinkAddAlloc(source_p, &oper_list);
1117 }
1118 }
1119 else
1120 {
1121 /* Only decrement the oper counts if an oper to begin with
1122 * found by Pat Szuta, Perly , perly@xnet.com
1123 */
1124
1125 if(!IsOper(source_p))
1126 break;
1127
1128 ClearOper(source_p);
1129
1130 Count.oper--;
1131
1132 if(MyConnect(source_p))
1133 {
1134 source_p->umodes &= ~ConfigFileEntry.oper_only_umodes;
1135 source_p->flags &= ~OPER_FLAGS;
1136
1137 rb_dlinkFindDestroy(source_p, &local_oper_list);
1138 }
1139
1140 if(source_p->user->opername != NULL)
1141 {
1142 rb_free(source_p->user->opername);
1143 source_p->user->opername = NULL;
1144 }
1145
1146 if(source_p->user->privset != NULL)
1147 {
1148 report_priv_change(source_p, source_p->user->privset, NULL);
1149
1150 privilegeset_unref(source_p->user->privset);
1151 source_p->user->privset = NULL;
1152 }
1153
1154 rb_dlinkFindDestroy(source_p, &oper_list);
1155 }
1156 break;
1157
1158 /* we may not get these,
1159 * but they shouldnt be in default
1160 */
1161
1162 /* can only be set on burst */
1163 case 'S':
1164 case 'Z':
1165 case ' ':
1166 case '\n':
1167 case '\r':
1168 case '\t':
1169 break;
1170
1171 case 's':
1172 if (MyConnect(source_p))
1173 {
1174 if((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1175 (!IsOper(source_p) || !HasPrivilege(source_p, "usermode:servnotice")))
1176 {
1177 if (what == MODE_ADD || source_p->umodes & UMODE_SERVNOTICE)
1178 badflag = true;
1179 continue;
1180 }
1181 showsnomask = true;
1182 if(what == MODE_ADD)
1183 {
1184 if (parc > 3)
1185 source_p->snomask = parse_snobuf_to_mask(source_p->snomask, parv[3]);
1186 else
1187 source_p->snomask |= SNO_GENERAL;
1188 }
1189 else
1190 source_p->snomask = 0;
1191 if (source_p->snomask != 0)
1192 source_p->umodes |= UMODE_SERVNOTICE;
1193 else
1194 source_p->umodes &= ~UMODE_SERVNOTICE;
1195 break;
1196 }
1197 /* FALLTHROUGH */
1198 default:
1199 if (MyConnect(source_p) && *pm == 'Q' && !ConfigChannel.use_forward)
1200 {
1201 badflag = true;
1202 break;
1203 }
1204
1205 if((flag = user_modes[(unsigned char) *pm]))
1206 {
1207 if(MyConnect(source_p)
1208 && ((!IsOper(source_p)
1209 && (ConfigFileEntry.oper_only_umodes & flag))
1210 || (orphaned_umodes & flag)))
1211 {
1212 if (what == MODE_ADD || source_p->umodes & flag)
1213 badflag = true;
1214 }
1215 else
1216 {
1217 if(what == MODE_ADD)
1218 source_p->umodes |= flag;
1219 else
1220 source_p->umodes &= ~flag;
1221 }
1222 }
1223 else
1224 {
1225 if(MyConnect(source_p))
1226 badflag = true;
1227 }
1228 break;
1229 }
1230
1231 if(badflag)
1232 sendto_one(source_p, form_str(ERR_UMODEUNKNOWNFLAG), me.name, source_p->name);
1233
1234 if(MyClient(source_p))
1235 {
1236 if ((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1237 !HasPrivilege(source_p, "usermode:servnotice"))
1238 source_p->umodes &= ~UMODE_SERVNOTICE;
1239 if (!(source_p->umodes & UMODE_SERVNOTICE) && source_p->snomask != 0)
1240 {
1241 source_p->snomask = 0;
1242 showsnomask = true;
1243 }
1244 }
1245
1246 if(MyClient(source_p) && (source_p->snomask & SNO_NCHANGE) && !IsOperN(source_p))
1247 {
1248 sendto_one_notice(source_p, ":*** You need oper and nick_changes flag for +s +n");
1249 source_p->snomask &= ~SNO_NCHANGE; /* only tcm's really need this */
1250 }
1251
1252 if(MyClient(source_p) && (source_p->umodes & UMODE_OPERWALL) && !IsOperOperwall(source_p))
1253 {
1254 sendto_one_notice(source_p, ":*** You need oper and operwall flag for +z");
1255 source_p->umodes &= ~UMODE_OPERWALL;
1256 }
1257
1258 if(MyConnect(source_p) && (source_p->umodes & UMODE_ADMIN) &&
1259 (!IsOperAdmin(source_p) || IsOperHiddenAdmin(source_p)))
1260 {
1261 sendto_one_notice(source_p, ":*** You need oper and admin flag for +a");
1262 source_p->umodes &= ~UMODE_ADMIN;
1263 }
1264
1265 if(MyClient(source_p))
1266 source_p->handler = IsOperGeneral(source_p) ? OPER_HANDLER : CLIENT_HANDLER;
1267
1268 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1269 hdata.client = source_p;
1270 hdata.oldumodes = setflags;
1271 hdata.oldsnomask = setsnomask;
1272 call_hook(h_umode_changed, &hdata);
1273
1274 if(!(setflags & UMODE_INVISIBLE) && IsInvisible(source_p))
1275 ++Count.invisi;
1276 if((setflags & UMODE_INVISIBLE) && !IsInvisible(source_p))
1277 --Count.invisi;
1278 /*
1279 * compare new flags with old flags and send string which
1280 * will cause servers to update correctly.
1281 */
1282 send_umode_out(client_p, source_p, setflags);
1283 if (showsnomask && MyConnect(source_p))
1284 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1285 construct_snobuf(source_p->snomask));
1286
1287 return (0);
1288 }
1289
1290 /*
1291 * send the MODE string for user (user) to connection client_p
1292 * -avalon
1293 */
1294 void
1295 send_umode(struct Client *client_p, struct Client *source_p, int old, char *umode_buf)
1296 {
1297 int i;
1298 int flag;
1299 char *m;
1300 int what = 0;
1301
1302 /*
1303 * build a string in umode_buf to represent the change in the user's
1304 * mode between the new (source_p->flag) and 'old'.
1305 */
1306 m = umode_buf;
1307 *m = '\0';
1308
1309 for (i = 0; i < 128; i++)
1310 {
1311 flag = user_modes[i];
1312
1313 if((flag & old) && !(source_p->umodes & flag))
1314 {
1315 if(what == MODE_DEL)
1316 *m++ = (char) i;
1317 else
1318 {
1319 what = MODE_DEL;
1320 *m++ = '-';
1321 *m++ = (char) i;
1322 }
1323 }
1324 else if(!(flag & old) && (source_p->umodes & flag))
1325 {
1326 if(what == MODE_ADD)
1327 *m++ = (char) i;
1328 else
1329 {
1330 what = MODE_ADD;
1331 *m++ = '+';
1332 *m++ = (char) i;
1333 }
1334 }
1335 }
1336 *m = '\0';
1337
1338 if(*umode_buf && client_p)
1339 sendto_one(client_p, ":%s MODE %s :%s", source_p->name, source_p->name, umode_buf);
1340 }
1341
1342 /*
1343 * send_umode_out
1344 *
1345 * inputs -
1346 * output - NONE
1347 * side effects -
1348 */
1349 void
1350 send_umode_out(struct Client *client_p, struct Client *source_p, int old)
1351 {
1352 struct Client *target_p;
1353 char buf[BUFSIZE];
1354 rb_dlink_node *ptr;
1355
1356 send_umode(NULL, source_p, old, buf);
1357
1358 RB_DLINK_FOREACH(ptr, serv_list.head)
1359 {
1360 target_p = ptr->data;
1361
1362 if((target_p != client_p) && (target_p != source_p) && (*buf))
1363 {
1364 sendto_one(target_p, ":%s MODE %s :%s",
1365 get_id(source_p, target_p),
1366 get_id(source_p, target_p), buf);
1367 }
1368 }
1369
1370 if(client_p && MyClient(client_p))
1371 send_umode(client_p, source_p, old, buf);
1372 }
1373
1374 /*
1375 * user_welcome
1376 *
1377 * inputs - client pointer to client to welcome
1378 * output - NONE
1379 * side effects -
1380 */
1381 void
1382 user_welcome(struct Client *source_p)
1383 {
1384 sendto_one_numeric(source_p, RPL_WELCOME, form_str(RPL_WELCOME), ServerInfo.network_name, source_p->name);
1385 sendto_one_numeric(source_p, RPL_YOURHOST, form_str(RPL_YOURHOST),
1386 get_listener_name(source_p->localClient->listener), ircd_version);
1387 sendto_one_numeric(source_p, RPL_CREATED, form_str(RPL_CREATED), creation);
1388 sendto_one_numeric(source_p, RPL_MYINFO, form_str(RPL_MYINFO), me.name, ircd_version, umodebuf, cflagsmyinfo);
1389
1390 show_isupport(source_p);
1391
1392 show_lusers(source_p);
1393
1394 if(ConfigFileEntry.short_motd)
1395 {
1396 sendto_one_notice(source_p, ":*** Notice -- motd was last changed at %s", user_motd_changed);
1397 sendto_one_notice(source_p, ":*** Notice -- Please read the motd if you haven't read it");
1398
1399 sendto_one(source_p, form_str(RPL_MOTDSTART),
1400 me.name, source_p->name, me.name);
1401
1402 sendto_one(source_p, form_str(RPL_MOTD),
1403 me.name, source_p->name, "*** This is the short motd ***");
1404
1405 sendto_one(source_p, form_str(RPL_ENDOFMOTD), me.name, source_p->name);
1406 }
1407 else
1408 send_user_motd(source_p);
1409 }
1410
1411 /* oper_up()
1412 *
1413 * inputs - pointer to given client to oper
1414 * - pointer to ConfItem to use
1415 * output - none
1416 * side effects - opers up source_p using aconf for reference
1417 */
1418 void
1419 oper_up(struct Client *source_p, struct oper_conf *oper_p)
1420 {
1421 unsigned int old = source_p->umodes, oldsnomask = source_p->snomask;
1422 hook_data_umode_changed hdata;
1423
1424 SetOper(source_p);
1425
1426 if(oper_p->umodes)
1427 source_p->umodes |= oper_p->umodes;
1428 else if(ConfigFileEntry.oper_umodes)
1429 source_p->umodes |= ConfigFileEntry.oper_umodes;
1430 else
1431 source_p->umodes |= DEFAULT_OPER_UMODES;
1432
1433 if (oper_p->snomask)
1434 {
1435 source_p->snomask |= oper_p->snomask;
1436 source_p->umodes |= UMODE_SERVNOTICE;
1437 }
1438 else if (source_p->umodes & UMODE_SERVNOTICE)
1439 {
1440 /* Only apply these if +s is already set -- jilles */
1441 if (ConfigFileEntry.oper_snomask)
1442 source_p->snomask |= ConfigFileEntry.oper_snomask;
1443 else
1444 source_p->snomask |= DEFAULT_OPER_SNOMASK;
1445 }
1446
1447 Count.oper++;
1448
1449 SetExtendChans(source_p);
1450 SetExemptKline(source_p);
1451
1452 source_p->flags |= oper_p->flags;
1453 source_p->user->opername = rb_strdup(oper_p->name);
1454 source_p->user->privset = privilegeset_ref(oper_p->privset);
1455
1456 report_priv_change(source_p, NULL, source_p->user->privset);
1457
1458 rb_dlinkAddAlloc(source_p, &local_oper_list);
1459 rb_dlinkAddAlloc(source_p, &oper_list);
1460
1461 if(IsOperAdmin(source_p) && !IsOperHiddenAdmin(source_p))
1462 source_p->umodes |= UMODE_ADMIN;
1463 if(!IsOperN(source_p))
1464 source_p->snomask &= ~SNO_NCHANGE;
1465 if(!IsOperOperwall(source_p))
1466 source_p->umodes &= ~UMODE_OPERWALL;
1467 if((ConfigFileEntry.oper_only_umodes & UMODE_SERVNOTICE) &&
1468 !HasPrivilege(source_p, "usermode:servnotice"))
1469 {
1470 source_p->umodes &= ~UMODE_SERVNOTICE;
1471 source_p->snomask = 0;
1472 }
1473 hdata.client = source_p;
1474 hdata.oldumodes = old;
1475 hdata.oldsnomask = oldsnomask;
1476 call_hook(h_umode_changed, &hdata);
1477
1478 source_p->handler = IsOperGeneral(source_p) ? OPER_HANDLER : CLIENT_HANDLER;
1479
1480 sendto_realops_snomask(SNO_GENERAL, L_ALL,
1481 "%s (%s!%s@%s) is now an operator", oper_p->name, source_p->name,
1482 source_p->username, source_p->host);
1483 sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s OPER %s %s",
1484 use_id(source_p), oper_p->name, oper_p->privset->name);
1485 if(!(old & UMODE_INVISIBLE) && IsInvisible(source_p))
1486 ++Count.invisi;
1487 if((old & UMODE_INVISIBLE) && !IsInvisible(source_p))
1488 --Count.invisi;
1489 send_umode_out(source_p, source_p, old);
1490 sendto_one_numeric(source_p, RPL_SNOMASK, form_str(RPL_SNOMASK),
1491 construct_snobuf(source_p->snomask));
1492 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
1493 sendto_one_notice(source_p, ":*** Oper privilege set is %s", oper_p->privset->name);
1494 send_multiline_init(source_p, " ", ":%s NOTICE %s :*** Oper privs are ", me.name, source_p->name);
1495 for (const char **s = privilegeset_privs(oper_p->privset); *s != NULL; s++)
1496 send_multiline_item(source_p, "%s", *s);
1497 send_multiline_fini(source_p, NULL);
1498 send_oper_motd(source_p);
1499 }
1500
1501 /*
1502 * find_umode_slot
1503 *
1504 * inputs - NONE
1505 * outputs - an available umode bitmask or
1506 * 0 if no umodes are available
1507 * side effects - NONE
1508 */
1509 unsigned int
1510 find_umode_slot(void)
1511 {
1512 unsigned int all_umodes = 0, my_umode = 0, i;
1513
1514 for (i = 0; i < 128; i++)
1515 all_umodes |= user_modes[i];
1516
1517 for (my_umode = 1; my_umode && (all_umodes & my_umode);
1518 my_umode <<= 1);
1519
1520 return my_umode;
1521 }
1522
1523 void
1524 construct_umodebuf(void)
1525 {
1526 int i;
1527 char *ptr = umodebuf;
1528 static int prev_user_modes[128];
1529
1530 *ptr = '\0';
1531
1532 for (i = 0; i < 128; i++)
1533 {
1534 if (prev_user_modes[i] != 0 && prev_user_modes[i] != user_modes[i])
1535 {
1536 if (user_modes[i] == 0)
1537 {
1538 orphaned_umodes |= prev_user_modes[i];
1539 sendto_realops_snomask(SNO_DEBUG, L_NETWIDE, "Umode +%c is now orphaned", i);
1540 }
1541 else
1542 {
1543 orphaned_umodes &= ~prev_user_modes[i];
1544 sendto_realops_snomask(SNO_DEBUG, L_NETWIDE, "Orphaned umode +%c is picked up by module", i);
1545 }
1546 user_modes[i] = prev_user_modes[i];
1547 }
1548 else
1549 prev_user_modes[i] = user_modes[i];
1550 if (user_modes[i])
1551 *ptr++ = (char) i;
1552 }
1553
1554 *ptr++ = '\0';
1555 }
1556
1557 void
1558 change_nick_user_host(struct Client *target_p, const char *nick, const char *user,
1559 const char *host, int newts, const char *format, ...)
1560 {
1561 rb_dlink_node *ptr;
1562 struct Channel *chptr;
1563 struct membership *mscptr;
1564 int changed = irccmp(target_p->name, nick);
1565 int changed_case = strcmp(target_p->name, nick);
1566 int do_qjm = irccmp(target_p->username, user) || irccmp(target_p->host, host);
1567 char mode[10], modeval[NICKLEN * 2 + 2], reason[256], *mptr;
1568 va_list ap;
1569
1570 modeval[0] = '\0';
1571
1572 if(changed)
1573 {
1574 target_p->tsinfo = newts;
1575 monitor_signoff(target_p);
1576 }
1577 invalidate_bancache_user(target_p);
1578
1579 if(do_qjm)
1580 {
1581 va_start(ap, format);
1582 vsnprintf(reason, 255, format, ap);
1583 va_end(ap);
1584
1585 sendto_common_channels_local_butone(target_p, NOCAPS, CLICAP_CHGHOST, ":%s!%s@%s QUIT :%s",
1586 target_p->name, target_p->username, target_p->host,
1587 reason);
1588
1589 RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
1590 {
1591 mscptr = ptr->data;
1592 chptr = mscptr->chptr;
1593 mptr = mode;
1594
1595 if(is_chanop(mscptr))
1596 {
1597 *mptr++ = 'o';
1598 strcat(modeval, nick);
1599 strcat(modeval, " ");
1600 }
1601
1602 if(is_voiced(mscptr))
1603 {
1604 *mptr++ = 'v';
1605 strcat(modeval, nick);
1606 }
1607
1608 *mptr = '\0';
1609
1610 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_EXTENDED_JOIN | CLICAP_CHGHOST, chptr,
1611 ":%s!%s@%s JOIN %s", nick, user, host, chptr->chname);
1612 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, CLICAP_EXTENDED_JOIN, CLICAP_CHGHOST, chptr,
1613 ":%s!%s@%s JOIN %s %s :%s", nick, user, host, chptr->chname,
1614 EmptyString(target_p->user->suser) ? "*" : target_p->user->suser,
1615 target_p->info);
1616
1617 if(*mode)
1618 sendto_channel_local_with_capability_butone(target_p, ALL_MEMBERS, NOCAPS, CLICAP_CHGHOST, chptr,
1619 ":%s MODE %s +%s %s", target_p->servptr->name, chptr->chname, mode, modeval);
1620
1621 *modeval = '\0';
1622 }
1623
1624 /* Resend away message to away-notify enabled clients. */
1625 if (target_p->user->away)
1626 sendto_common_channels_local_butone(target_p, CLICAP_AWAY_NOTIFY, CLICAP_CHGHOST, ":%s!%s@%s AWAY :%s",
1627 nick, user, host,
1628 target_p->user->away);
1629
1630 sendto_common_channels_local_butone(target_p, CLICAP_CHGHOST, NOCAPS,
1631 ":%s!%s@%s CHGHOST %s %s",
1632 target_p->name, target_p->username, target_p->host, user, host);
1633
1634 if(MyClient(target_p) && changed_case)
1635 sendto_one(target_p, ":%s!%s@%s NICK %s",
1636 target_p->name, user, host, nick);
1637
1638 /* TODO: send some snotes to SNO_NCHANGE/SNO_CCONN/SNO_CCONNEXT? */
1639 }
1640 else if(changed_case)
1641 {
1642 sendto_common_channels_local(target_p, NOCAPS, NOCAPS, ":%s!%s@%s NICK :%s",
1643 target_p->name, user, host, nick);
1644
1645 if(MyConnect(target_p))
1646 sendto_realops_snomask(SNO_NCHANGE, L_ALL,
1647 "Nick change: From %s to %s [%s@%s]",
1648 target_p->name, nick,
1649 target_p->username, target_p->host);
1650 }
1651
1652 if (user != target_p->username)
1653 rb_strlcpy(target_p->username, user, sizeof target_p->username);
1654
1655 rb_strlcpy(target_p->host, host, sizeof target_p->host);
1656
1657 if (changed)
1658 whowas_add_history(target_p, 1);
1659
1660 del_from_client_hash(target_p->name, target_p);
1661 rb_strlcpy(target_p->name, nick, NICKLEN);
1662 add_to_client_hash(target_p->name, target_p);
1663
1664 if(changed)
1665 {
1666 monitor_signon(target_p);
1667 del_all_accepts(target_p);
1668 }
1669 }
1670
1671 bool
1672 has_common_channel(struct Client *source_p, struct Client *target_p)
1673 {
1674 rb_dlink_node *ps, *pt;
1675 struct membership *ms, *mt;
1676 struct Channel *chptr;
1677
1678 ITER_COMM_CHANNELS(ps, pt, source_p->user->channel.head, target_p->user->channel.head, ms, mt, chptr)
1679 {
1680 if (ms != NULL && mt != NULL)
1681 return true;
1682 }
1683
1684 return false;
1685 }
1686
Fork of solanum ircd, history is rebased regularly