2 * ircd-ratbox: A slightly useful ircd.
3 * s_user.c: User related functions.
5 * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
6 * Copyright (C) 1996-2002 Hybrid Development Team
7 * Copyright (C) 2002-2005 ircd-ratbox development team
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24 * $Id: s_user.c 3586 2007-11-20 11:16:43Z nenolod $
35 #include "irc_string.h"
36 #include "sprintf_irc.h"
43 #include "s_newconf.h"
49 #include "supported.h"
58 #include "blacklist.h"
59 #include "substitution.h"
61 static void report_and_set_user_flags(struct Client
*, struct ConfItem
*);
62 void user_welcome(struct Client
*source_p
);
68 static int orphaned_umodes
= 0;
69 int user_modes
[256] = {
70 /* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
71 /* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
72 /* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
73 /* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
91 UMODE_NOFORWARD
, /* Q */
92 UMODE_REGONLYMSG
, /* R */
93 UMODE_SERVICE
, /* S */
101 /* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
108 UMODE_CALLERID
, /* g */
110 UMODE_INVISIBLE
, /* i */
113 UMODE_LOCOPS
, /* l */
120 UMODE_SERVNOTICE
, /* s */
124 UMODE_WALLOP
, /* w */
127 UMODE_OPERWALL
, /* z */
128 /* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
129 /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
130 /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
131 /* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
132 /* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
133 /* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
134 /* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
135 /* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
136 /* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
143 * inputs - pointer to client
145 * side effects - display to client user counts etc.
148 show_lusers(struct Client
*source_p
)
150 if(dlink_list_length(&lclient_list
) > (unsigned long)MaxClientCount
)
151 MaxClientCount
= dlink_list_length(&lclient_list
);
153 if((dlink_list_length(&lclient_list
) + dlink_list_length(&serv_list
)) >
154 (unsigned long)MaxConnectionCount
)
155 MaxConnectionCount
= dlink_list_length(&lclient_list
) +
156 dlink_list_length(&serv_list
);
158 sendto_one_numeric(source_p
, RPL_LUSERCLIENT
, form_str(RPL_LUSERCLIENT
),
159 (Count
.total
- Count
.invisi
),
160 Count
.invisi
, dlink_list_length(&global_serv_list
));
162 if(dlink_list_length(&oper_list
) > 0)
163 sendto_one_numeric(source_p
, RPL_LUSEROP
,
164 form_str(RPL_LUSEROP
), dlink_list_length(&oper_list
));
166 if(dlink_list_length(&unknown_list
) > 0)
167 sendto_one_numeric(source_p
, RPL_LUSERUNKNOWN
,
168 form_str(RPL_LUSERUNKNOWN
),
169 dlink_list_length(&unknown_list
));
171 if(dlink_list_length(&global_channel_list
) > 0)
172 sendto_one_numeric(source_p
, RPL_LUSERCHANNELS
,
173 form_str(RPL_LUSERCHANNELS
),
174 dlink_list_length(&global_channel_list
));
176 sendto_one_numeric(source_p
, RPL_LUSERME
, form_str(RPL_LUSERME
),
177 dlink_list_length(&lclient_list
),
178 dlink_list_length(&serv_list
));
180 sendto_one_numeric(source_p
, RPL_LOCALUSERS
,
181 form_str(RPL_LOCALUSERS
),
182 dlink_list_length(&lclient_list
),
184 dlink_list_length(&lclient_list
),
187 sendto_one_numeric(source_p
, RPL_GLOBALUSERS
, form_str(RPL_GLOBALUSERS
),
188 Count
.total
, Count
.max_tot
,
189 Count
.total
, Count
.max_tot
);
191 sendto_one_numeric(source_p
, RPL_STATSCONN
,
192 form_str(RPL_STATSCONN
),
193 MaxConnectionCount
, MaxClientCount
,
194 Count
.totalrestartcount
);
200 ** register_local_user
201 ** This function is called when both NICK and USER messages
202 ** have been accepted for the client, in whatever order. Only
203 ** after this, is the USER message propagated.
205 ** NICK's must be propagated at once when received, although
206 ** it would be better to delay them too until full info is
207 ** available. Doing it is not so simple though, would have
208 ** to implement the following:
210 ** (actually it has been implemented already for a while) -orabidoo
212 ** 1) user telnets in and gives only "NICK foobar" and waits
213 ** 2) another user far away logs in normally with the nick
214 ** "foobar" (quite legal, as this server didn't propagate
216 ** 3) now this server gets nick "foobar" from outside, but
217 ** has alread the same defined locally. Current server
218 ** would just issue "KILL foobar" to clean out dups. But,
219 ** this is not fair. It should actually request another
220 ** nick from local user or kill him/her...
224 register_local_user(struct Client
*client_p
, struct Client
*source_p
, const char *username
)
226 struct ConfItem
*aconf
, *xconf
;
227 struct User
*user
= source_p
->user
;
228 char tmpstr2
[IRCD_BUFSIZE
];
229 char ipaddr
[HOSTIPLEN
];
230 char myusername
[USERLEN
+1];
233 s_assert(NULL
!= source_p
);
234 s_assert(MyConnect(source_p
));
235 s_assert(source_p
->username
!= username
);
240 if(IsAnyDead(source_p
))
243 if(ConfigFileEntry
.ping_cookie
)
245 if(!(source_p
->flags
& FLAGS_PINGSENT
) && source_p
->localClient
->random_ping
== 0)
247 source_p
->localClient
->random_ping
= (unsigned long) (rand() * rand()) << 1;
248 sendto_one(source_p
, "PING :%08lX",
249 (unsigned long) source_p
->localClient
->random_ping
);
250 source_p
->flags
|= FLAGS_PINGSENT
;
253 if(!(source_p
->flags2
& FLAGS2_PING_COOKIE
))
259 /* hasnt finished client cap negotiation */
260 if(source_p
->flags2
& FLAGS2_CLICAP
)
263 /* still has DNSbls to validate against */
264 if(dlink_list_length(&source_p
->preClient
->dnsbl_queries
) > 0)
267 client_p
->localClient
->last
= CurrentTime
;
268 /* Straight up the maximum rate of flooding... */
269 source_p
->localClient
->allow_read
= MAX_FLOOD_BURST
;
271 /* XXX - fixme. we shouldnt have to build a users buffer twice.. */
272 if(!IsGotId(source_p
) && (strchr(username
, '[') != NULL
))
279 while(*p
&& i
< USERLEN
)
282 myusername
[i
++] = *p
;
286 myusername
[i
] = '\0';
287 username
= myusername
;
290 if((status
= check_client(client_p
, source_p
, username
)) < 0)
291 return (CLIENT_EXITED
);
293 /* Apply nick override */
294 if(*source_p
->preClient
->spoofnick
)
296 del_from_client_hash(source_p
->name
, source_p
);
297 strlcpy(source_p
->name
, source_p
->preClient
->spoofnick
, NICKLEN
+ 1);
298 add_to_client_hash(source_p
->name
, source_p
);
299 comm_note(source_p
->localClient
->fd
, "Nick: %s", source_p
->name
);
302 if(!valid_hostname(source_p
->host
))
304 sendto_one_notice(source_p
, ":*** Notice -- You have an illegal character in your hostname");
306 strlcpy(source_p
->host
, source_p
->sockhost
, sizeof(source_p
->host
));
309 if(ConfigFileEntry
.dot_in_ip6_addr
== 1)
310 strlcat(source_p
->host
, ".", sizeof(source_p
->host
));
315 aconf
= source_p
->localClient
->att_conf
;
319 exit_client(client_p
, source_p
, &me
, "*** Not Authorised");
320 return (CLIENT_EXITED
);
323 if(!IsGotId(source_p
))
328 if(IsNeedIdentd(aconf
))
330 ServerStats
->is_ref
++;
331 sendto_one_notice(source_p
, ":*** Notice -- You need to install identd to use this server");
332 exit_client(client_p
, source_p
, &me
, "Install identd");
333 return (CLIENT_EXITED
);
336 /* dont replace username if its supposed to be spoofed --fl */
337 if(!IsConfDoSpoofIp(aconf
) || !strchr(aconf
->name
, '@'))
341 if(!IsNoTilde(aconf
))
342 source_p
->username
[i
++] = '~';
344 while (*p
&& i
< USERLEN
)
347 source_p
->username
[i
++] = *p
;
351 source_p
->username
[i
] = '\0';
355 if(IsNeedSasl(aconf
) && !*user
->suser
)
357 ServerStats
->is_ref
++;
358 sendto_one_notice(source_p
, ":*** Notice -- You need to identify via SASL to use this server");
359 exit_client(client_p
, source_p
, &me
, "SASL access only");
360 return (CLIENT_EXITED
);
364 if(!EmptyString(aconf
->passwd
))
368 if(EmptyString(source_p
->localClient
->passwd
))
370 else if(IsConfEncrypted(aconf
))
371 encr
= crypt(source_p
->localClient
->passwd
, aconf
->passwd
);
373 encr
= source_p
->localClient
->passwd
;
375 if(strcmp(encr
, aconf
->passwd
))
377 ServerStats
->is_ref
++;
378 sendto_one(source_p
, form_str(ERR_PASSWDMISMATCH
), me
.name
, source_p
->name
);
379 exit_client(client_p
, source_p
, &me
, "Bad Password");
380 return (CLIENT_EXITED
);
383 /* clear password only if used now, otherwise send it
384 * to services -- jilles */
385 if(source_p
->localClient
->passwd
)
387 memset(source_p
->localClient
->passwd
, 0, strlen(source_p
->localClient
->passwd
));
388 MyFree(source_p
->localClient
->passwd
);
389 source_p
->localClient
->passwd
= NULL
;
393 /* report if user has &^>= etc. and set flags as needed in source_p */
394 report_and_set_user_flags(source_p
, aconf
);
398 * We want to be able to have servers and F-line clients
399 * connect, so save room for "buffer" connections.
400 * Smaller servers may want to decrease this, and it should
401 * probably be just a percentage of the MAXCLIENTS...
404 /* Except "F:" clients */
405 if(dlink_list_length(&lclient_list
) >=
406 (unsigned long)GlobalSetOptions
.maxclients
&& !IsExemptLimits(source_p
))
408 sendto_realops_snomask(SNO_FULL
, L_ALL
,
409 "Too many clients, rejecting %s[%s].", source_p
->name
, source_p
->host
);
411 ServerStats
->is_ref
++;
412 exit_client(client_p
, source_p
, &me
, "Sorry, server is full - try later");
413 return (CLIENT_EXITED
);
416 /* kline exemption extends to xline too */
417 if(!IsExemptKline(source_p
) &&
418 (xconf
= find_xline(source_p
->info
, 1)) != NULL
)
420 ServerStats
->is_ref
++;
421 add_reject(source_p
, xconf
->name
, NULL
);
422 exit_client(client_p
, source_p
, &me
, "Bad user info");
423 return CLIENT_EXITED
;
427 if (source_p
->preClient
->dnsbl_listed
!= NULL
)
429 if (IsExemptKline(source_p
) || IsConfExemptDNSBL(aconf
))
430 sendto_one_notice(source_p
, ":*** Your IP address %s is listed in %s, but you are exempt",
431 source_p
->sockhost
, source_p
->preClient
->dnsbl_listed
->host
);
434 dlink_list varlist
= { NULL
, NULL
, 0 };
436 substitution_append_var(&varlist
, "nick", source_p
->name
);
437 substitution_append_var(&varlist
, "ip", source_p
->sockhost
);
438 substitution_append_var(&varlist
, "host", source_p
->host
);
439 substitution_append_var(&varlist
, "dnsbl-host", source_p
->preClient
->dnsbl_listed
->host
);
440 substitution_append_var(&varlist
, "network-name", ServerInfo
.network_name
);
442 ServerStats
->is_ref
++;
444 sendto_one(source_p
, form_str(ERR_YOUREBANNEDCREEP
),
445 me
.name
, source_p
->name
,
446 substitution_parse(source_p
->preClient
->dnsbl_listed
->reject_reason
, &varlist
));
448 substitution_free(&varlist
);
450 sendto_one_notice(source_p
, ":*** Your IP address %s is listed in %s",
451 source_p
->sockhost
, source_p
->preClient
->dnsbl_listed
->host
);
452 source_p
->preClient
->dnsbl_listed
->hits
++;
453 add_reject(source_p
, NULL
, NULL
);
454 exit_client(client_p
, source_p
, &me
, "*** Banned (DNS blacklist)");
455 return CLIENT_EXITED
;
459 /* valid user name check */
461 if(!valid_username(source_p
->username
))
463 sendto_realops_snomask(SNO_REJ
, L_ALL
,
464 "Invalid username: %s (%s@%s)",
465 source_p
->name
, source_p
->username
, source_p
->host
);
466 ServerStats
->is_ref
++;
467 sendto_one_notice(source_p
, ":*** Your username is invalid. Please make sure that your username contains "
468 "only alphanumeric characters.");
469 ircsprintf(tmpstr2
, "Invalid username [%s]", source_p
->username
);
470 exit_client(client_p
, source_p
, &me
, tmpstr2
);
471 return (CLIENT_EXITED
);
474 /* end of valid user name check */
476 /* Store original hostname -- jilles */
477 strlcpy(source_p
->orighost
, source_p
->host
, HOSTLEN
+ 1);
479 /* Spoof user@host */
480 if(*source_p
->preClient
->spoofuser
)
481 strlcpy(source_p
->username
, source_p
->preClient
->spoofuser
, USERLEN
+ 1);
482 if(*source_p
->preClient
->spoofhost
)
484 strlcpy(source_p
->host
, source_p
->preClient
->spoofhost
, HOSTLEN
+ 1);
485 if (irccmp(source_p
->host
, source_p
->orighost
))
486 SetDynSpoof(source_p
);
489 source_p
->umodes
|= ConfigFileEntry
.default_umodes
& ~ConfigFileEntry
.oper_only_umodes
& ~orphaned_umodes
;
491 call_hook(h_new_local_user
, source_p
);
493 /* If they have died in send_* or were thrown out by the
494 * new_local_user hook don't do anything. */
495 if(IsAnyDead(source_p
))
496 return CLIENT_EXITED
;
498 /* To avoid inconsistencies, do not abort the registration
499 * starting from this point -- jilles
501 inetntop_sock((struct sockaddr
*)&source_p
->localClient
->ip
, ipaddr
, sizeof(ipaddr
));
503 sendto_realops_snomask(SNO_CCONN
, L_ALL
,
504 "Client connecting: %s (%s@%s) [%s] {%s} [%s]",
505 source_p
->name
, source_p
->username
, source_p
->orighost
,
506 show_ip(NULL
, source_p
) ? ipaddr
: "255.255.255.255",
507 get_client_class(source_p
), source_p
->info
);
509 sendto_realops_snomask(SNO_CCONNEXT
, L_ALL
,
510 "CLICONN %s %s %s %s %s %s 0 %s",
511 source_p
->name
, source_p
->username
, source_p
->orighost
,
512 show_ip(NULL
, source_p
) ? ipaddr
: "255.255.255.255",
513 get_client_class(source_p
),
514 /* mirc can sometimes send ips here */
515 show_ip(NULL
, source_p
) ? source_p
->localClient
->fullcaps
: "<hidden> <hidden>",
518 add_to_hostname_hash(source_p
->orighost
, source_p
);
520 /* Allocate a UID if it was not previously allocated.
521 * If this already occured, it was probably during SASL auth...
525 strcpy(source_p
->id
, generate_uid());
526 add_to_id_hash(source_p
->id
, source_p
);
529 if (source_p
->umodes
& UMODE_INVISIBLE
)
532 s_assert(!IsClient(source_p
));
533 del_unknown_ip(source_p
);
534 dlinkMoveNode(&source_p
->localClient
->tnode
, &unknown_list
, &lclient_list
);
537 source_p
->servptr
= &me
;
538 dlinkAdd(source_p
, &source_p
->lnode
, &source_p
->servptr
->serv
->users
);
540 /* Increment our total user count here */
541 if(++Count
.total
> Count
.max_tot
)
542 Count
.max_tot
= Count
.total
;
544 source_p
->localClient
->allow_read
= MAX_FLOOD_BURST
;
546 Count
.totalrestartcount
++;
548 s_assert(source_p
->localClient
!= NULL
);
550 if(dlink_list_length(&lclient_list
) > (unsigned long)Count
.max_loc
)
552 Count
.max_loc
= dlink_list_length(&lclient_list
);
553 if(!(Count
.max_loc
% 10))
554 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
555 "New Max Local Clients: %d", Count
.max_loc
);
558 /* they get a reduced limit */
559 if(find_tgchange(source_p
->sockhost
))
560 USED_TARGETS(source_p
) = 6;
562 monitor_signon(source_p
);
563 user_welcome(source_p
);
565 free_pre_client(source_p
);
567 return (introduce_client(client_p
, source_p
, user
, source_p
->name
, 1));
575 * side effects - This common function introduces a client to the rest
576 * of the net, either from a local client connect or
577 * from a remote connect.
580 introduce_client(struct Client
*client_p
, struct Client
*source_p
, struct User
*user
, const char *nick
, int use_euid
)
582 static char ubuf
[12];
583 struct Client
*identifyservice_p
;
585 hook_data_umode_changed hdata
;
586 hook_data_client hdata2
;
588 if(MyClient(source_p
))
589 send_umode(source_p
, source_p
, 0, 0, ubuf
);
591 send_umode(NULL
, source_p
, 0, 0, ubuf
);
599 /* if it has an ID, introduce it with its id to TS6 servers,
600 * otherwise introduce it normally to all.
604 char sockhost
[HOSTLEN
];
605 if(source_p
->sockhost
[0] == ':')
609 strlcat(sockhost
, source_p
->sockhost
, sizeof(sockhost
));
611 strcpy(sockhost
, source_p
->sockhost
);
614 sendto_server(client_p
, NULL
, CAP_EUID
| CAP_TS6
, NOCAPS
,
615 ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
616 source_p
->servptr
->id
, nick
,
617 source_p
->hopcount
+ 1,
618 (long) source_p
->tsinfo
, ubuf
,
619 source_p
->username
, source_p
->host
,
620 IsIPSpoof(source_p
) ? "0" : sockhost
,
622 IsDynSpoof(source_p
) ? source_p
->orighost
: "*",
623 EmptyString(source_p
->user
->suser
) ? "*" : source_p
->user
->suser
,
626 sendto_server(client_p
, NULL
, CAP_TS6
, use_euid
? CAP_EUID
: NOCAPS
,
627 ":%s UID %s %d %ld %s %s %s %s %s :%s",
628 source_p
->servptr
->id
, nick
,
629 source_p
->hopcount
+ 1,
630 (long) source_p
->tsinfo
, ubuf
,
631 source_p
->username
, source_p
->host
,
632 IsIPSpoof(source_p
) ? "0" : sockhost
,
633 source_p
->id
, source_p
->info
);
635 sendto_server(client_p
, NULL
, NOCAPS
, CAP_TS6
,
636 "NICK %s %d %ld %s %s %s %s :%s",
637 nick
, source_p
->hopcount
+ 1,
638 (long) source_p
->tsinfo
,
639 ubuf
, source_p
->username
, source_p
->host
,
640 source_p
->servptr
->name
, source_p
->info
);
643 sendto_server(client_p
, NULL
, NOCAPS
, NOCAPS
,
644 "NICK %s %d %ld %s %s %s %s :%s",
645 nick
, source_p
->hopcount
+ 1,
646 (long) source_p
->tsinfo
,
647 ubuf
, source_p
->username
, source_p
->host
,
648 source_p
->servptr
->name
, source_p
->info
);
650 if (IsDynSpoof(source_p
))
652 sendto_server(client_p
, NULL
, CAP_TS6
, use_euid
? CAP_EUID
: NOCAPS
, ":%s ENCAP * REALHOST %s",
653 use_id(source_p
), source_p
->orighost
);
654 sendto_server(client_p
, NULL
, NOCAPS
, CAP_TS6
, ":%s ENCAP * REALHOST %s",
655 source_p
->name
, source_p
->orighost
);
657 if (!EmptyString(source_p
->user
->suser
))
659 sendto_server(client_p
, NULL
, CAP_TS6
, use_euid
? CAP_EUID
: NOCAPS
, ":%s ENCAP * LOGIN %s",
660 use_id(source_p
), source_p
->user
->suser
);
661 sendto_server(client_p
, NULL
, NOCAPS
, CAP_TS6
, ":%s ENCAP * LOGIN %s",
662 source_p
->name
, source_p
->user
->suser
);
665 if(MyConnect(source_p
) && source_p
->localClient
->passwd
)
667 if (ConfigFileEntry
.identifyservice
[0] != '\0' &&
668 ConfigFileEntry
.identifycommand
[0] != '\0')
670 /* use user@server */
671 p
= strchr(ConfigFileEntry
.identifyservice
, '@');
673 identifyservice_p
= find_named_client(p
+ 1);
675 identifyservice_p
= NULL
;
676 if (identifyservice_p
!= NULL
)
677 sendto_one(identifyservice_p
, ":%s PRIVMSG %s :%s %s",
678 get_id(source_p
, identifyservice_p
),
679 ConfigFileEntry
.identifyservice
,
680 ConfigFileEntry
.identifycommand
,
681 source_p
->localClient
->passwd
);
683 memset(source_p
->localClient
->passwd
, 0, strlen(source_p
->localClient
->passwd
));
684 MyFree(source_p
->localClient
->passwd
);
685 source_p
->localClient
->passwd
= NULL
;
688 /* let modules providing usermodes know that we've got a new user,
689 * why is this here? -- well, some modules need to be able to send out new
690 * information about a client, so this was the best place to do it
693 hdata
.client
= source_p
;
695 hdata
.oldsnomask
= 0;
696 call_hook(h_umode_changed
, &hdata
);
698 /* On the other hand, some modules need to know when a client is
699 * being introduced, period.
702 hdata2
.client
= client_p
;
703 hdata2
.target
= source_p
;
704 call_hook(h_introduce_client
, &hdata2
);
710 * valid_hostname - check hostname for validity
712 * Inputs - pointer to user
713 * Output - YES if valid, NO if not
714 * Side effects - NONE
716 * NOTE: this doesn't allow a hostname to begin with a dot and
717 * will not allow more dots than chars.
720 valid_hostname(const char *hostname
)
722 const char *p
= hostname
;
730 if('.' == *p
|| ':' == *p
)
737 if(*p
== '.' || *p
== ':')
749 * valid_username - check username for validity
751 * Inputs - pointer to user
752 * Output - YES if valid, NO if not
753 * Side effects - NONE
755 * Absolutely always reject any '*' '!' '?' '@' in an user name
756 * reject any odd control characters names.
757 * Allow '.' in username to allow for "first.last"
761 valid_username(const char *username
)
764 const char *p
= username
;
774 /* reject usernames that don't start with an alphanum
775 * i.e. reject jokers who have '-@somehost' or '.@somehost'
776 * or "-hi-@somehost", "h-----@somehost" would still be accepted.
783 if((*p
== '.') && ConfigFileEntry
.dots_in_ident
)
786 if(dots
> ConfigFileEntry
.dots_in_ident
)
788 if(!IsUserChar(p
[1]))
791 else if(!IsUserChar(*p
))
797 /* report_and_set_user_flags
799 * Inputs - pointer to source_p
800 * - pointer to aconf for this user
803 * Report to user any special flags they are getting, and set them.
807 report_and_set_user_flags(struct Client
*source_p
, struct ConfItem
*aconf
)
809 /* If this user is being spoofed, tell them so */
810 if(IsConfDoSpoofIp(aconf
))
812 sendto_one_notice(source_p
, ":*** Spoofing your IP. congrats.");
815 /* If this user is in the exception class, Set it "E lined" */
816 if(IsConfExemptKline(aconf
))
818 SetExemptKline(source_p
);
819 sendto_one_notice(source_p
, ":*** You are exempt from K/D/G/X lines. congrats.");
822 if(IsConfExemptGline(aconf
))
824 SetExemptGline(source_p
);
826 /* dont send both a kline and gline exempt notice */
827 if(!IsConfExemptKline(aconf
))
828 sendto_one_notice(source_p
, ":*** You are exempt from G lines.");
831 if(IsConfExemptDNSBL(aconf
))
832 /* kline exempt implies this, don't send both */
833 if(!IsConfExemptKline(aconf
))
834 sendto_one_notice(source_p
, ":*** You are exempt from DNS blacklists.");
836 /* If this user is exempt from user limits set it F lined" */
837 if(IsConfExemptLimits(aconf
))
839 SetExemptLimits(source_p
);
840 sendto_one_notice(source_p
, "*** You are exempt from user limits. congrats.");
843 /* If this user is exempt from idle time outs */
844 if(IsConfIdlelined(aconf
))
846 SetIdlelined(source_p
);
847 sendto_one_notice(source_p
, ":*** You are exempt from idle limits. congrats.");
850 if(IsConfExemptFlood(aconf
))
852 SetExemptFlood(source_p
);
853 sendto_one_notice(source_p
, ":*** You are exempt from flood limits.");
856 if(IsConfExemptSpambot(aconf
))
858 SetExemptSpambot(source_p
);
859 sendto_one_notice(source_p
, ":*** You are exempt from spambot checks.");
862 if(IsConfExemptJupe(aconf
))
864 SetExemptJupe(source_p
);
865 sendto_one_notice(source_p
, ":*** You are exempt from juped channel warnings.");
868 if(IsConfExemptResv(aconf
))
870 SetExemptResv(source_p
);
871 sendto_one_notice(source_p
, ":*** You are exempt from resvs.");
874 if(IsConfExemptShide(aconf
))
876 SetExemptShide(source_p
);
877 sendto_one_notice(source_p
, ":*** You are exempt from serverhiding.");
882 * user_mode - set get current users mode
884 * m_umode() added 15/10/91 By Darren Reed.
886 * parv[1] - username to change mode for
887 * parv[2] - modes to change
890 user_mode(struct Client
*client_p
, struct Client
*source_p
, int parc
, const char *parv
[])
896 struct Client
*target_p
;
898 int badflag
= NO
; /* Only send one bad flag notice */
899 int showsnomask
= NO
;
900 unsigned int setsnomask
;
902 hook_data_umode_changed hdata
;
908 sendto_one(source_p
, form_str(ERR_NEEDMOREPARAMS
), me
.name
, source_p
->name
, "MODE");
912 if((target_p
= MyClient(source_p
) ? find_named_person(parv
[1]) : find_person(parv
[1])) == NULL
)
914 if(MyConnect(source_p
))
915 sendto_one_numeric(source_p
, ERR_NOSUCHCHANNEL
,
916 form_str(ERR_NOSUCHCHANNEL
), parv
[1]);
920 /* Dont know why these were commented out..
921 * put them back using new sendto() funcs
924 if(IsServer(source_p
))
926 sendto_realops_snomask(SNO_GENERAL
, L_ADMIN
,
927 "*** Mode for User %s from %s", parv
[1], source_p
->name
);
931 if(source_p
!= target_p
|| target_p
->from
!= source_p
->from
)
933 sendto_one(source_p
, form_str(ERR_USERSDONTMATCH
), me
.name
, source_p
->name
);
942 for (i
= 0; i
< 128; i
++) /* >= 127 is extended ascii */
943 if (source_p
->umodes
& user_modes
[i
])
947 sendto_one_numeric(source_p
, RPL_UMODEIS
, form_str(RPL_UMODEIS
), buf
);
949 if (source_p
->snomask
!= 0)
950 sendto_one_numeric(source_p
, RPL_SNOMASK
, form_str(RPL_SNOMASK
),
951 construct_snobuf(source_p
->snomask
));
956 /* find flags already set for user */
957 setflags
= source_p
->umodes
;
958 setsnomask
= source_p
->snomask
;
961 * parse mode change string(s)
963 for (pm
= parv
[2]; *pm
; pm
++)
976 if(IsServer(client_p
) && !IsOper(source_p
))
980 dlinkAddAlloc(source_p
, &oper_list
);
985 /* Only decrement the oper counts if an oper to begin with
986 * found by Pat Szuta, Perly , perly@xnet.com
989 if(!IsOper(source_p
))
996 if(MyConnect(source_p
))
998 source_p
->umodes
&= ~ConfigFileEntry
.oper_only_umodes
;
999 if (!(source_p
->umodes
& UMODE_SERVNOTICE
) && source_p
->snomask
!= 0)
1001 source_p
->snomask
= 0;
1004 source_p
->flags2
&= ~OPER_FLAGS
;
1006 MyFree(source_p
->localClient
->opername
);
1007 source_p
->localClient
->opername
= NULL
;
1009 dlinkFindDestroy(source_p
, &local_oper_list
);
1012 dlinkFindDestroy(source_p
, &oper_list
);
1016 /* we may not get these,
1017 * but they shouldnt be in default
1020 /* can only be set on burst */
1029 if (MyConnect(source_p
))
1031 if(!IsOper(source_p
)
1032 && (ConfigFileEntry
.oper_only_umodes
& UMODE_SERVNOTICE
))
1034 if (what
== MODE_ADD
|| source_p
->umodes
& UMODE_SERVNOTICE
)
1039 if(what
== MODE_ADD
)
1042 source_p
->snomask
= parse_snobuf_to_mask(source_p
->snomask
, parv
[3]);
1044 source_p
->snomask
|= SNO_GENERAL
;
1047 source_p
->snomask
= 0;
1048 if (source_p
->snomask
!= 0)
1049 source_p
->umodes
|= UMODE_SERVNOTICE
;
1051 source_p
->umodes
&= ~UMODE_SERVNOTICE
;
1056 if (MyConnect(source_p
) && *pm
== 'Q' && !ConfigChannel
.use_forward
) {
1061 if((flag
= user_modes
[(unsigned char) *pm
]))
1063 if(MyConnect(source_p
)
1064 && ((!IsOper(source_p
)
1065 && (ConfigFileEntry
.oper_only_umodes
& flag
))
1066 || (orphaned_umodes
& flag
)))
1068 if (what
== MODE_ADD
|| source_p
->umodes
& flag
)
1073 if(what
== MODE_ADD
)
1074 source_p
->umodes
|= flag
;
1076 source_p
->umodes
&= ~flag
;
1081 if(MyConnect(source_p
))
1088 sendto_one(source_p
, form_str(ERR_UMODEUNKNOWNFLAG
), me
.name
, source_p
->name
);
1090 if(MyClient(source_p
) && (source_p
->snomask
& SNO_NCHANGE
) && !IsOperN(source_p
))
1092 sendto_one_notice(source_p
, ":*** You need oper and N flag for +s +n");
1093 source_p
->snomask
&= ~SNO_NCHANGE
; /* only tcm's really need this */
1096 if(MyClient(source_p
) && (source_p
->umodes
& UMODE_OPERWALL
) && !IsOperOperwall(source_p
))
1098 sendto_one_notice(source_p
, ":*** You need oper and operwall flag for +z");
1099 source_p
->umodes
&= ~UMODE_OPERWALL
;
1102 if(MyConnect(source_p
) && (source_p
->umodes
& UMODE_ADMIN
) &&
1103 (!IsOperAdmin(source_p
) || IsOperHiddenAdmin(source_p
)))
1105 sendto_one_notice(source_p
, ":*** You need oper and A flag for +a");
1106 source_p
->umodes
&= ~UMODE_ADMIN
;
1109 /* let modules providing usermodes know that we've changed our usermode --nenolod */
1110 hdata
.client
= source_p
;
1111 hdata
.oldumodes
= setflags
;
1112 hdata
.oldsnomask
= setsnomask
;
1113 call_hook(h_umode_changed
, &hdata
);
1115 if(!(setflags
& UMODE_INVISIBLE
) && IsInvisible(source_p
))
1117 if((setflags
& UMODE_INVISIBLE
) && !IsInvisible(source_p
))
1120 * compare new flags with old flags and send string which
1121 * will cause servers to update correctly.
1123 send_umode_out(client_p
, source_p
, setflags
);
1124 if (showsnomask
&& MyConnect(source_p
))
1125 sendto_one_numeric(source_p
, RPL_SNOMASK
, form_str(RPL_SNOMASK
),
1126 construct_snobuf(source_p
->snomask
));
1132 * send the MODE string for user (user) to connection client_p
1136 send_umode(struct Client
*client_p
, struct Client
*source_p
, int old
, int sendmask
, char *umode_buf
)
1144 * build a string in umode_buf to represent the change in the user's
1145 * mode between the new (source_p->flag) and 'old'.
1150 for (i
= 0; i
< 128; i
++)
1152 flag
= user_modes
[i
];
1154 if((flag
& old
) && !(source_p
->umodes
& flag
))
1156 if(what
== MODE_DEL
)
1165 else if(!(flag
& old
) && (source_p
->umodes
& flag
))
1167 if(what
== MODE_ADD
)
1179 if(*umode_buf
&& client_p
)
1180 sendto_one(client_p
, ":%s MODE %s :%s", source_p
->name
, source_p
->name
, umode_buf
);
1191 send_umode_out(struct Client
*client_p
, struct Client
*source_p
, int old
)
1193 struct Client
*target_p
;
1197 send_umode(NULL
, source_p
, old
, 0, buf
);
1199 DLINK_FOREACH(ptr
, serv_list
.head
)
1201 target_p
= ptr
->data
;
1203 if((target_p
!= client_p
) && (target_p
!= source_p
) && (*buf
))
1205 sendto_one(target_p
, ":%s MODE %s :%s",
1206 get_id(source_p
, target_p
),
1207 get_id(source_p
, target_p
), buf
);
1211 if(client_p
&& MyClient(client_p
))
1212 send_umode(client_p
, source_p
, old
, 0, buf
);
1218 * inputs - client pointer to client to welcome
1223 user_welcome(struct Client
*source_p
)
1225 sendto_one_numeric(source_p
, RPL_WELCOME
, form_str(RPL_WELCOME
), ServerInfo
.network_name
, source_p
->name
);
1226 sendto_one_numeric(source_p
, RPL_YOURHOST
, form_str(RPL_YOURHOST
),
1227 get_listener_name(source_p
->localClient
->listener
), ircd_version
);
1228 sendto_one_numeric(source_p
, RPL_CREATED
, form_str(RPL_CREATED
), creation
);
1229 sendto_one_numeric(source_p
, RPL_MYINFO
, form_str(RPL_MYINFO
), me
.name
, ircd_version
, umodebuf
);
1231 show_isupport(source_p
);
1233 show_lusers(source_p
);
1235 if(ConfigFileEntry
.short_motd
)
1237 sendto_one_notice(source_p
, ":*** Notice -- motd was last changed at %s", user_motd_changed
);
1238 sendto_one_notice(source_p
, ":*** Notice -- Please read the motd if you haven't read it");
1240 sendto_one(source_p
, form_str(RPL_MOTDSTART
),
1241 me
.name
, source_p
->name
, me
.name
);
1243 sendto_one(source_p
, form_str(RPL_MOTD
),
1244 me
.name
, source_p
->name
, "*** This is the short motd ***");
1246 sendto_one(source_p
, form_str(RPL_ENDOFMOTD
), me
.name
, source_p
->name
);
1249 send_user_motd(source_p
);
1254 * inputs - pointer to given client to oper
1255 * - pointer to ConfItem to use
1257 * side effects - opers up source_p using aconf for reference
1260 oper_up(struct Client
*source_p
, struct oper_conf
*oper_p
)
1262 unsigned int old
= source_p
->umodes
, oldsnomask
= source_p
->snomask
;
1263 hook_data_umode_changed hdata
;
1268 source_p
->umodes
|= oper_p
->umodes
;
1269 else if(ConfigFileEntry
.oper_umodes
)
1270 source_p
->umodes
|= ConfigFileEntry
.oper_umodes
;
1272 source_p
->umodes
|= DEFAULT_OPER_UMODES
;
1274 if (oper_p
->snomask
)
1276 source_p
->snomask
|= oper_p
->snomask
;
1277 source_p
->umodes
|= UMODE_SERVNOTICE
;
1279 else if (source_p
->umodes
& UMODE_SERVNOTICE
)
1281 /* Only apply these if +s is already set -- jilles */
1282 if (ConfigFileEntry
.oper_snomask
)
1283 source_p
->snomask
|= ConfigFileEntry
.oper_snomask
;
1285 source_p
->snomask
|= DEFAULT_OPER_SNOMASK
;
1290 SetExemptKline(source_p
);
1292 source_p
->flags2
|= oper_p
->flags
;
1293 DupString(source_p
->localClient
->opername
, oper_p
->name
);
1295 dlinkAddAlloc(source_p
, &local_oper_list
);
1296 dlinkAddAlloc(source_p
, &oper_list
);
1298 if(IsOperAdmin(source_p
) && !IsOperHiddenAdmin(source_p
))
1299 source_p
->umodes
|= UMODE_ADMIN
;
1300 if(!IsOperN(source_p
))
1301 source_p
->snomask
&= ~SNO_NCHANGE
;
1302 if(!IsOperOperwall(source_p
))
1303 source_p
->umodes
&= ~UMODE_OPERWALL
;
1304 hdata
.client
= source_p
;
1305 hdata
.oldumodes
= old
;
1306 hdata
.oldsnomask
= oldsnomask
;
1307 call_hook(h_umode_changed
, &hdata
);
1309 sendto_realops_snomask(SNO_GENERAL
, L_ALL
,
1310 "%s (%s@%s) is now an operator", source_p
->name
,
1311 source_p
->username
, source_p
->host
);
1312 if(!(old
& UMODE_INVISIBLE
) && IsInvisible(source_p
))
1314 if((old
& UMODE_INVISIBLE
) && !IsInvisible(source_p
))
1316 send_umode_out(source_p
, source_p
, old
);
1317 sendto_one_numeric(source_p
, RPL_SNOMASK
, form_str(RPL_SNOMASK
),
1318 construct_snobuf(source_p
->snomask
));
1319 sendto_one(source_p
, form_str(RPL_YOUREOPER
), me
.name
, source_p
->name
);
1320 sendto_one_notice(source_p
, ":*** Oper privs are %s", get_oper_privs(oper_p
->flags
));
1321 send_oper_motd(source_p
);
1330 * outputs - an available umode bitmask or
1331 * 0 if no umodes are available
1332 * side effects - NONE
1335 find_umode_slot(void)
1337 unsigned int all_umodes
= 0, my_umode
= 0, i
;
1339 for (i
= 0; i
< 128; i
++)
1340 all_umodes
|= user_modes
[i
];
1342 for (my_umode
= 1; my_umode
&& (all_umodes
& my_umode
);
1349 construct_umodebuf(void)
1352 char *ptr
= umodebuf
;
1353 static int prev_user_modes
[128];
1357 for (i
= 0; i
< 128; i
++)
1359 if (prev_user_modes
[i
] != 0 && prev_user_modes
[i
] != user_modes
[i
])
1361 if (user_modes
[i
] == 0)
1363 orphaned_umodes
|= prev_user_modes
[i
];
1364 sendto_realops_snomask(SNO_DEBUG
, L_ALL
, "Umode +%c is now orphaned", i
);
1368 orphaned_umodes
&= ~prev_user_modes
[i
];
1369 sendto_realops_snomask(SNO_DEBUG
, L_ALL
, "Orphaned umode +%c is picked up by module", i
);
1371 user_modes
[i
] = prev_user_modes
[i
];
1374 prev_user_modes
[i
] = user_modes
[i
];
1383 change_nick_user_host(struct Client
*target_p
, const char *nick
, const char *user
,
1384 const char *host
, int newts
, char *format
, ...)
1387 struct Channel
*chptr
;
1388 struct membership
*mscptr
;
1389 int changed
= irccmp(target_p
->name
, nick
);
1390 int changed_case
= strcmp(target_p
->name
, nick
);
1391 int do_qjm
= irccmp(target_p
->username
, user
) || irccmp(target_p
->host
, host
);
1392 char mode
[10], modeval
[NICKLEN
* 2 + 2], reason
[256], *mptr
;
1399 target_p
->tsinfo
= newts
;
1400 monitor_signoff(target_p
);
1402 invalidate_bancache_user(target_p
);
1406 va_start(ap
, format
);
1407 vsnprintf(reason
, 255, format
, ap
);
1410 sendto_common_channels_local_butone(target_p
, ":%s!%s@%s QUIT :%s",
1411 target_p
->name
, target_p
->username
, target_p
->host
,
1414 DLINK_FOREACH(ptr
, target_p
->user
->channel
.head
)
1417 chptr
= mscptr
->chptr
;
1420 if(is_chanop(mscptr
))
1423 strcat(modeval
, nick
);
1424 strcat(modeval
, " ");
1427 if(is_voiced(mscptr
))
1430 strcat(modeval
, nick
);
1435 sendto_channel_local_butone(target_p
, ALL_MEMBERS
, chptr
, ":%s!%s@%s JOIN :%s",
1436 nick
, user
, host
, chptr
->chname
);
1438 sendto_channel_local_butone(target_p
, ALL_MEMBERS
, chptr
,
1439 ":%s MODE %s +%s %s",
1440 target_p
->servptr
->name
,
1441 chptr
->chname
, mode
, modeval
);
1446 if(MyClient(target_p
) && changed_case
)
1447 sendto_one(target_p
, ":%s!%s@%s NICK %s",
1448 target_p
->name
, target_p
->username
, target_p
->host
, nick
);
1450 else if(changed_case
)
1452 sendto_common_channels_local(target_p
, ":%s!%s@%s NICK :%s",
1453 target_p
->name
, target_p
->username
,
1454 target_p
->host
, nick
);
1457 strlcpy(target_p
->username
, user
, sizeof target_p
->username
);
1458 strlcpy(target_p
->host
, host
, sizeof target_p
->host
);
1461 add_history(target_p
, 1);
1463 del_from_client_hash(target_p
->name
, target_p
);
1464 strlcpy(target_p
->name
, nick
, NICKLEN
);
1465 add_to_client_hash(target_p
->name
, target_p
);
1469 monitor_signon(target_p
);
1470 del_all_accepts(target_p
);