/[svn]/ircd-hybrid/trunk/src/conf.c
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Annotation of /ircd-hybrid/trunk/src/conf.c

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Revision 1654 - (hide annotations)
Fri Nov 16 19:39:37 2012 UTC (7 years, 8 months ago) by michael
File MIME type: text/x-chdr
File size: 64341 byte(s)
- Implemented memory pool allocator which basically is taken from Tor's
  mempool allocator for Tor cells
- Fixed compile warnings in conf_class.c
- ./configure --enable-assert works again

1 adx 30 /*
2     * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 michael 1309 * conf.c: Configuration file functions.
4 adx 30 *
5     * Copyright (C) 2002 by the past and present ircd coders, and others.
6     *
7     * This program is free software; you can redistribute it and/or modify
8     * it under the terms of the GNU General Public License as published by
9     * the Free Software Foundation; either version 2 of the License, or
10     * (at your option) any later version.
11     *
12     * This program is distributed in the hope that it will be useful,
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15     * GNU General Public License for more details.
16     *
17     * You should have received a copy of the GNU General Public License
18     * along with this program; if not, write to the Free Software
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20     * USA
21     *
22 knight 31 * $Id$
23 adx 30 */
24    
25     #include "stdinc.h"
26 michael 1011 #include "list.h"
27 adx 30 #include "ircd_defs.h"
28 michael 1309 #include "conf.h"
29 adx 30 #include "s_serv.h"
30     #include "resv.h"
31     #include "channel.h"
32     #include "client.h"
33     #include "event.h"
34     #include "hook.h"
35     #include "irc_string.h"
36     #include "s_bsd.h"
37     #include "ircd.h"
38     #include "listener.h"
39     #include "hostmask.h"
40     #include "modules.h"
41     #include "numeric.h"
42     #include "fdlist.h"
43 michael 1309 #include "log.h"
44 adx 30 #include "send.h"
45     #include "s_gline.h"
46     #include "memory.h"
47 michael 1654 #include "mempool.h"
48 adx 30 #include "irc_res.h"
49     #include "userhost.h"
50     #include "s_user.h"
51     #include "channel_mode.h"
52 michael 1243 #include "parse.h"
53     #include "s_misc.h"
54 michael 1622 #include "conf_db.h"
55 michael 1632 #include "conf_class.h"
56 adx 30
57     struct config_server_hide ConfigServerHide;
58    
59     /* general conf items link list root, other than k lines etc. */
60 michael 1157 dlink_list service_items = { NULL, NULL, 0 };
61 adx 30 dlink_list server_items = { NULL, NULL, 0 };
62     dlink_list cluster_items = { NULL, NULL, 0 };
63     dlink_list oconf_items = { NULL, NULL, 0 };
64     dlink_list uconf_items = { NULL, NULL, 0 };
65     dlink_list xconf_items = { NULL, NULL, 0 };
66     dlink_list rxconf_items = { NULL, NULL, 0 };
67     dlink_list rkconf_items = { NULL, NULL, 0 };
68     dlink_list nresv_items = { NULL, NULL, 0 };
69     dlink_list temporary_resv = { NULL, NULL, 0 };
70    
71     extern unsigned int lineno;
72     extern char linebuf[];
73     extern char conffilebuf[IRCD_BUFSIZE];
74     extern int yyparse(); /* defined in y.tab.c */
75    
76 michael 967 struct conf_parser_context conf_parser_ctx = { 0, 0, NULL };
77    
78 adx 30 /* internally defined functions */
79 michael 1325 static void read_conf(FILE *);
80 adx 30 static void clear_out_old_conf(void);
81     static void expire_tklines(dlink_list *);
82     static void garbage_collect_ip_entries(void);
83     static int hash_ip(struct irc_ssaddr *);
84 michael 1644 static int verify_access(struct Client *);
85 michael 1632 static int attach_iline(struct Client *, struct MaskItem *);
86 adx 30 static struct ip_entry *find_or_add_ip(struct irc_ssaddr *);
87 michael 1632 static dlink_list *map_to_list(enum maskitem_type);
88     static struct MaskItem *find_regexp_kline(const char *[]);
89 adx 30 static int find_user_host(struct Client *, char *, char *, char *, unsigned int);
90    
91    
92     /* usually, with hash tables, you use a prime number...
93     * but in this case I am dealing with ip addresses,
94     * not ascii strings.
95     */
96     #define IP_HASH_SIZE 0x1000
97    
98     struct ip_entry
99     {
100     struct irc_ssaddr ip;
101 michael 1644 unsigned int count;
102 adx 30 time_t last_attempt;
103     struct ip_entry *next;
104     };
105    
106     static struct ip_entry *ip_hash_table[IP_HASH_SIZE];
107 michael 1654 static mp_pool_t *ip_entry_pool = NULL;
108 adx 30 static int ip_entries_count = 0;
109    
110    
111     /* conf_dns_callback()
112     *
113 michael 1632 * inputs - pointer to struct MaskItem
114 adx 30 * - pointer to DNSReply reply
115     * output - none
116     * side effects - called when resolver query finishes
117     * if the query resulted in a successful search, hp will contain
118     * a non-null pointer, otherwise hp will be null.
119     * if successful save hp in the conf item it was called with
120     */
121     static void
122 michael 992 conf_dns_callback(void *vptr, const struct irc_ssaddr *addr, const char *name)
123 adx 30 {
124 michael 1632 struct MaskItem *conf = vptr;
125 adx 30
126 michael 1632 conf->dns_pending = 0;
127 adx 30
128 michael 992 if (addr != NULL)
129 michael 1632 memcpy(&conf->addr, addr, sizeof(conf->addr));
130 michael 992 else
131 michael 1632 conf->dns_failed = 1;
132 adx 30 }
133    
134     /* conf_dns_lookup()
135     *
136     * do a nameserver lookup of the conf host
137     * if the conf entry is currently doing a ns lookup do nothing, otherwise
138     * allocate a dns_query and start ns lookup.
139     */
140     static void
141 michael 1632 conf_dns_lookup(struct MaskItem *conf)
142 adx 30 {
143 michael 1632 if (!conf->dns_pending)
144 adx 30 {
145 michael 1632 conf->dns_pending = 1;
146     gethost_byname(conf_dns_callback, conf, conf->host);
147 adx 30 }
148     }
149    
150 michael 1632 struct MaskItem *
151     conf_make(enum maskitem_type type)
152     {
153     struct MaskItem *conf = MyMalloc(sizeof(*conf));
154     dlink_list *list = NULL;
155    
156     conf->type = type;
157     conf->active = 1;
158     conf->aftype = AF_INET;
159    
160     if ((list = map_to_list(type)))
161     dlinkAdd(conf, &conf->node, list);
162     return conf;
163     }
164    
165     void
166     conf_free(struct MaskItem *conf)
167     {
168     dlink_node *ptr = NULL, *ptr_next = NULL;
169 michael 1636 dlink_list *list = NULL;
170    
171     if (conf->node.next)
172     if ((list = map_to_list(conf->type)))
173     dlinkDelete(&conf->node, list);
174    
175 michael 1632 MyFree(conf->name);
176    
177     if (conf->dns_pending)
178     delete_resolver_queries(conf);
179     if (conf->passwd != NULL)
180     memset(conf->passwd, 0, strlen(conf->passwd));
181     if (conf->spasswd != NULL)
182     memset(conf->spasswd, 0, strlen(conf->spasswd));
183    
184     conf->class = NULL;
185    
186     MyFree(conf->passwd);
187     MyFree(conf->spasswd);
188     MyFree(conf->reason);
189     MyFree(conf->user);
190     MyFree(conf->host);
191 michael 1636 MyFree(conf->regexuser);
192     MyFree(conf->regexhost);
193 michael 1632 #ifdef HAVE_LIBCRYPTO
194     MyFree(conf->cipher_list);
195    
196     if (conf->rsa_public_key)
197     RSA_free(conf->rsa_public_key);
198     #endif
199     DLINK_FOREACH_SAFE(ptr, ptr_next, conf->hub_list.head)
200     {
201     MyFree(ptr->data);
202     free_dlink_node(ptr);
203     }
204    
205     DLINK_FOREACH_SAFE(ptr, ptr_next, conf->leaf_list.head)
206     {
207     MyFree(ptr->data);
208     free_dlink_node(ptr);
209     }
210 adx 30
211 michael 1636 MyFree(conf);
212 adx 30 }
213    
214 michael 1644 static const struct shared_flags
215     {
216     const unsigned int type;
217     const unsigned char letter;
218     } flag_table[] = {
219     { SHARED_KLINE, 'K' },
220     { SHARED_UNKLINE, 'U' },
221     { SHARED_XLINE, 'X' },
222     { SHARED_UNXLINE, 'Y' },
223     { SHARED_RESV, 'Q' },
224     { SHARED_UNRESV, 'R' },
225     { SHARED_LOCOPS, 'L' },
226     { SHARED_DLINE, 'D' },
227     { SHARED_UNDLINE, 'E' },
228     { 0, '\0' }
229     };
230 adx 30
231 michael 1644 /*
232 adx 30 * inputs - pointer to client requesting confitem report
233     * - ConfType to report
234     * output - none
235     * side effects -
236     */
237     void
238 michael 1632 report_confitem_types(struct Client *source_p, enum maskitem_type type)
239 adx 30 {
240 michael 1383 dlink_node *ptr = NULL, *dptr = NULL;
241 michael 1632 struct MaskItem *conf = NULL;
242     const struct ClassItem *class = NULL;
243 michael 1644 const struct shared_flags *shared = NULL;
244 adx 30 char buf[12];
245     char *p = NULL;
246    
247     switch (type)
248     {
249 michael 1632 case CONF_XLINE:
250 adx 30 DLINK_FOREACH(ptr, xconf_items.head)
251     {
252     conf = ptr->data;
253    
254     sendto_one(source_p, form_str(RPL_STATSXLINE),
255     me.name, source_p->name,
256 michael 1649 conf->until ? "x": "X", conf->count,
257 michael 1632 conf->name, conf->reason);
258 adx 30 }
259     break;
260    
261 michael 1009 #ifdef HAVE_LIBPCRE
262 michael 1632 case CONF_RXLINE:
263 adx 30 DLINK_FOREACH(ptr, rxconf_items.head)
264     {
265     conf = ptr->data;
266    
267     sendto_one(source_p, form_str(RPL_STATSXLINE),
268     me.name, source_p->name,
269 michael 1632 "XR", conf->count,
270     conf->name, conf->reason);
271 adx 30 }
272     break;
273    
274 michael 1632 case CONF_RKLINE:
275 adx 30 DLINK_FOREACH(ptr, rkconf_items.head)
276     {
277 michael 1632 conf = ptr->data;
278 adx 30
279     sendto_one(source_p, form_str(RPL_STATSKLINE), me.name,
280 michael 1632 source_p->name, "KR", conf->host, conf->user,
281     conf->reason);
282 adx 30 }
283     break;
284 michael 1009 #endif
285 adx 30
286 michael 1632 case CONF_ULINE:
287 michael 1644 shared = flag_table;
288 adx 30 DLINK_FOREACH(ptr, uconf_items.head)
289     {
290     conf = ptr->data;
291    
292     p = buf;
293    
294     *p++ = 'c';
295 michael 1644 for (; shared->type; ++shared)
296     if (shared->type & conf->flags)
297     *p++ = shared->letter;
298     else
299     *p++ = ToLower(shared->letter);
300 adx 30
301     sendto_one(source_p, form_str(RPL_STATSULINE),
302     me.name, source_p->name, conf->name,
303 michael 1632 conf->user?conf->user: "*",
304     conf->host?conf->host: "*", buf);
305 adx 30 }
306    
307 michael 1644 shared = flag_table;
308 adx 30 DLINK_FOREACH(ptr, cluster_items.head)
309     {
310     conf = ptr->data;
311    
312     p = buf;
313    
314     *p++ = 'C';
315 michael 1644 for (; shared->type; ++shared)
316     if (shared->type & conf->flags)
317     *p++ = shared->letter;
318     else
319     *p++ = ToLower(shared->letter);
320 adx 30
321     sendto_one(source_p, form_str(RPL_STATSULINE),
322     me.name, source_p->name, conf->name,
323     "*", "*", buf);
324     }
325    
326     break;
327    
328 michael 1632 case CONF_OPER:
329 adx 30 DLINK_FOREACH(ptr, oconf_items.head)
330     {
331     conf = ptr->data;
332    
333     /* Don't allow non opers to see oper privs */
334 michael 1219 if (HasUMode(source_p, UMODE_OPER))
335 adx 30 sendto_one(source_p, form_str(RPL_STATSOLINE),
336 michael 1632 me.name, source_p->name, 'O', conf->user, conf->host,
337     conf->name, oper_privs_as_string(conf->port),
338     conf->class ? conf->class->name : "<default>");
339 adx 30 else
340     sendto_one(source_p, form_str(RPL_STATSOLINE),
341 michael 1632 me.name, source_p->name, 'O', conf->user, conf->host,
342 adx 30 conf->name, "0",
343 michael 1632 conf->class ? conf->class->name : "<default>");
344 adx 30 }
345     break;
346    
347 michael 1632 case CONF_CLASS:
348     DLINK_FOREACH(ptr, class_get_list()->head)
349 adx 30 {
350 michael 1632 class = ptr->data;
351 adx 30 sendto_one(source_p, form_str(RPL_STATSYLINE),
352     me.name, source_p->name, 'Y',
353 michael 1632 class->name, class->ping_freq,
354     class->con_freq,
355     class->max_total, class->max_sendq,
356     class->max_recvq,
357     class->ref_count,
358     class->number_per_cidr, class->cidr_bitlen_ipv4,
359     class->number_per_cidr, class->cidr_bitlen_ipv6,
360     class->active ? "active" : "disabled");
361 adx 30 }
362     break;
363    
364 michael 1632 case CONF_SERVICE:
365 michael 1157 DLINK_FOREACH(ptr, service_items.head)
366     {
367     conf = ptr->data;
368 michael 1175 sendto_one(source_p, form_str(RPL_STATSSERVICE),
369     me.name, source_p->name, 'S', "*", conf->name, 0, 0);
370 michael 1157 }
371     break;
372    
373 michael 1632 case CONF_SERVER:
374 adx 30 DLINK_FOREACH(ptr, server_items.head)
375     {
376     p = buf;
377     conf = ptr->data;
378    
379     buf[0] = '\0';
380    
381 michael 1632 if (IsConfAllowAutoConn(conf))
382 adx 30 *p++ = 'A';
383 michael 1632 if (IsConfSSL(conf))
384 michael 1303 *p++ = 'S';
385 adx 30 if (buf[0] == '\0')
386     *p++ = '*';
387    
388     *p = '\0';
389    
390 michael 671 /*
391     * Allow admins to see actual ips unless hide_server_ips is enabled
392 adx 30 */
393 michael 1219 if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
394 adx 30 sendto_one(source_p, form_str(RPL_STATSCLINE),
395 michael 1632 me.name, source_p->name, 'C', conf->host,
396     buf, conf->name, conf->port,
397     conf->class ? conf->class->name : "<default>");
398 adx 30 else
399     sendto_one(source_p, form_str(RPL_STATSCLINE),
400     me.name, source_p->name, 'C',
401 michael 1632 "*@127.0.0.1", buf, conf->name, conf->port,
402     conf->class ? conf->class->name : "<default>");
403 adx 30 }
404     break;
405    
406 michael 1632 case CONF_HUB:
407 michael 1383 DLINK_FOREACH(ptr, server_items.head)
408 adx 30 {
409     conf = ptr->data;
410 michael 1383
411 michael 1632 DLINK_FOREACH(dptr, conf->hub_list.head)
412 michael 1383 sendto_one(source_p, form_str(RPL_STATSHLINE), me.name,
413     source_p->name, 'H', dptr->data, conf->name, 0, "*");
414 adx 30 }
415    
416 michael 1383 DLINK_FOREACH(ptr, server_items.head)
417 adx 30 {
418     conf = ptr->data;
419 michael 1383
420 michael 1632 DLINK_FOREACH(dptr, conf->leaf_list.head)
421 michael 1383 sendto_one(source_p, form_str(RPL_STATSLLINE), me.name,
422     source_p->name, 'L', dptr->data, conf->name, 0, "*");
423 adx 30 }
424 michael 1632
425 adx 30 break;
426    
427 michael 1009 default:
428 adx 30 break;
429     }
430     }
431    
432     /* check_client()
433     *
434     * inputs - pointer to client
435     * output - 0 = Success
436     * NOT_AUTHORIZED (-1) = Access denied (no I line match)
437     * IRCD_SOCKET_ERROR (-2) = Bad socket.
438     * I_LINE_FULL (-3) = I-line is full
439     * TOO_MANY (-4) = Too many connections from hostname
440     * BANNED_CLIENT (-5) = K-lined
441     * side effects - Ordinary client access check.
442     * Look for conf lines which have the same
443     * status as the flags passed.
444     */
445 michael 1644 int
446     check_client(struct Client *source_p)
447 adx 30 {
448     int i;
449    
450 michael 1644 if ((i = verify_access(source_p)))
451 michael 1247 ilog(LOG_TYPE_IRCD, "Access denied: %s[%s]",
452 adx 30 source_p->name, source_p->sockhost);
453    
454     switch (i)
455     {
456     case TOO_MANY:
457 michael 1618 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
458 adx 30 "Too many on IP for %s (%s).",
459     get_client_name(source_p, SHOW_IP),
460     source_p->sockhost);
461 michael 1247 ilog(LOG_TYPE_IRCD, "Too many connections on IP from %s.",
462 adx 30 get_client_name(source_p, SHOW_IP));
463 michael 896 ++ServerStats.is_ref;
464 adx 30 exit_client(source_p, &me, "No more connections allowed on that IP");
465     break;
466    
467     case I_LINE_FULL:
468 michael 1618 sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
469     "auth{} block is full for %s (%s).",
470 adx 30 get_client_name(source_p, SHOW_IP),
471     source_p->sockhost);
472 michael 1247 ilog(LOG_TYPE_IRCD, "Too many connections from %s.",
473 adx 30 get_client_name(source_p, SHOW_IP));
474 michael 896 ++ServerStats.is_ref;
475 adx 30 exit_client(source_p, &me,
476     "No more connections allowed in your connection class");
477     break;
478    
479     case NOT_AUTHORIZED:
480 michael 896 ++ServerStats.is_ref;
481 adx 30 /* jdc - lists server name & port connections are on */
482     /* a purely cosmetical change */
483 michael 1618 sendto_realops_flags(UMODE_UNAUTH, L_ALL, SEND_NOTICE,
484 adx 30 "Unauthorized client connection from %s [%s] on [%s/%u].",
485     get_client_name(source_p, SHOW_IP),
486 michael 891 source_p->sockhost,
487 adx 30 source_p->localClient->listener->name,
488     source_p->localClient->listener->port);
489 michael 1247 ilog(LOG_TYPE_IRCD,
490 adx 30 "Unauthorized client connection from %s on [%s/%u].",
491     get_client_name(source_p, SHOW_IP),
492     source_p->localClient->listener->name,
493     source_p->localClient->listener->port);
494    
495 michael 1549 exit_client(source_p, &me, "You are not authorized to use this server");
496 adx 30 break;
497 michael 891
498 adx 30 case BANNED_CLIENT:
499 michael 1549 exit_client(source_p, &me, "Banned");
500 michael 896 ++ServerStats.is_ref;
501 adx 30 break;
502    
503     case 0:
504     default:
505     break;
506     }
507    
508 michael 1644 return (i < 0 ? 0 : 1);
509 adx 30 }
510    
511     /* verify_access()
512     *
513     * inputs - pointer to client to verify
514     * output - 0 if success -'ve if not
515     * side effect - find the first (best) I line to attach.
516     */
517     static int
518 michael 1644 verify_access(struct Client *client_p)
519 adx 30 {
520 michael 1632 struct MaskItem *conf = NULL, *rkconf = NULL;
521 adx 30 char non_ident[USERLEN + 1] = { '~', '\0' };
522     const char *uhi[3];
523    
524     if (IsGotId(client_p))
525     {
526 michael 1632 conf = find_address_conf(client_p->host, client_p->username,
527 adx 30 &client_p->localClient->ip,
528     client_p->localClient->aftype,
529     client_p->localClient->passwd);
530     }
531     else
532     {
533 michael 1644 strlcpy(non_ident+1, client_p->username, sizeof(non_ident)-1);
534 michael 1632 conf = find_address_conf(client_p->host,non_ident,
535 adx 30 &client_p->localClient->ip,
536     client_p->localClient->aftype,
537     client_p->localClient->passwd);
538     }
539    
540     uhi[0] = IsGotId(client_p) ? client_p->username : non_ident;
541     uhi[1] = client_p->host;
542     uhi[2] = client_p->sockhost;
543    
544     rkconf = find_regexp_kline(uhi);
545    
546 michael 1632 if (conf != NULL)
547 adx 30 {
548 michael 1632 if (IsConfClient(conf) && !rkconf)
549 adx 30 {
550 michael 1632 if (IsConfRedir(conf))
551 adx 30 {
552     sendto_one(client_p, form_str(RPL_REDIR),
553     me.name, client_p->name,
554     conf->name ? conf->name : "",
555 michael 1632 conf->port);
556 adx 30 return(NOT_AUTHORIZED);
557     }
558    
559 michael 1632 if (IsConfDoIdentd(conf))
560 adx 30 SetNeedId(client_p);
561    
562     /* Thanks for spoof idea amm */
563 michael 1632 if (IsConfDoSpoofIp(conf))
564 adx 30 {
565 michael 1632 if (!ConfigFileEntry.hide_spoof_ips && IsConfSpoofNotice(conf))
566 michael 1618 sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
567     "%s spoofing: %s as %s",
568 adx 30 client_p->name, client_p->host, conf->name);
569     strlcpy(client_p->host, conf->name, sizeof(client_p->host));
570     SetIPSpoof(client_p);
571     }
572    
573     return(attach_iline(client_p, conf));
574     }
575 michael 1632 else if (rkconf || IsConfKill(conf) || (ConfigFileEntry.glines && IsConfGline(conf)))
576 adx 30 {
577     /* XXX */
578 michael 1632 conf = rkconf ? rkconf : conf;
579     if (IsConfGline(conf))
580 adx 30 sendto_one(client_p, ":%s NOTICE %s :*** G-lined", me.name,
581     client_p->name);
582 michael 1549 sendto_one(client_p, ":%s NOTICE %s :*** Banned: %s",
583 michael 1632 me.name, client_p->name, conf->reason);
584 adx 30 return(BANNED_CLIENT);
585     }
586     }
587    
588     return(NOT_AUTHORIZED);
589     }
590    
591     /* attach_iline()
592     *
593     * inputs - client pointer
594     * - conf pointer
595     * output -
596     * side effects - do actual attach
597     */
598     static int
599 michael 1632 attach_iline(struct Client *client_p, struct MaskItem *conf)
600 adx 30 {
601 michael 1632 struct ClassItem *class = NULL;
602 adx 30 struct ip_entry *ip_found;
603     int a_limit_reached = 0;
604 michael 1644 unsigned int local = 0, global = 0, ident = 0;
605 adx 30
606     ip_found = find_or_add_ip(&client_p->localClient->ip);
607     ip_found->count++;
608     SetIpHash(client_p);
609    
610 michael 1632 if (conf->class == NULL)
611 adx 30 return NOT_AUTHORIZED; /* If class is missing, this is best */
612    
613 michael 1632 class = conf->class;
614 adx 30
615     count_user_host(client_p->username, client_p->host,
616     &global, &local, &ident);
617    
618     /* XXX blah. go down checking the various silly limits
619     * setting a_limit_reached if any limit is reached.
620     * - Dianora
621     */
622 michael 1632 if (class->max_total != 0 && class->ref_count >= class->max_total)
623 adx 30 a_limit_reached = 1;
624 michael 1632 else if (class->max_perip != 0 && ip_found->count > class->max_perip)
625 adx 30 a_limit_reached = 1;
626 michael 1632 else if (class->max_local != 0 && local >= class->max_local)
627 adx 30 a_limit_reached = 1;
628 michael 1632 else if (class->max_global != 0 && global >= class->max_global)
629 adx 30 a_limit_reached = 1;
630 michael 1632 else if (class->max_ident != 0 && ident >= class->max_ident &&
631 adx 30 client_p->username[0] != '~')
632     a_limit_reached = 1;
633    
634     if (a_limit_reached)
635     {
636 michael 1632 if (!IsConfExemptLimits(conf))
637 michael 624 return TOO_MANY; /* Already at maximum allowed */
638 adx 30
639     sendto_one(client_p,
640     ":%s NOTICE %s :*** Your connection class is full, "
641     "but you have exceed_limit = yes;", me.name, client_p->name);
642     }
643    
644     return attach_conf(client_p, conf);
645     }
646    
647     /* init_ip_hash_table()
648     *
649     * inputs - NONE
650     * output - NONE
651     * side effects - allocate memory for ip_entry(s)
652     * - clear the ip hash table
653     */
654     void
655     init_ip_hash_table(void)
656     {
657 michael 1654 ip_entry_pool = mp_pool_new(sizeof(struct ip_entry),
658 adx 30 2 * hard_fdlimit);
659     memset(ip_hash_table, 0, sizeof(ip_hash_table));
660     }
661    
662     /* find_or_add_ip()
663     *
664     * inputs - pointer to struct irc_ssaddr
665     * output - pointer to a struct ip_entry
666     * side effects -
667     *
668     * If the ip # was not found, a new struct ip_entry is created, and the ip
669     * count set to 0.
670     */
671     static struct ip_entry *
672     find_or_add_ip(struct irc_ssaddr *ip_in)
673     {
674     struct ip_entry *ptr, *newptr;
675     int hash_index = hash_ip(ip_in), res;
676     struct sockaddr_in *v4 = (struct sockaddr_in *)ip_in, *ptr_v4;
677     #ifdef IPV6
678     struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)ip_in, *ptr_v6;
679     #endif
680    
681     for (ptr = ip_hash_table[hash_index]; ptr; ptr = ptr->next)
682     {
683     #ifdef IPV6
684     if (ptr->ip.ss.ss_family != ip_in->ss.ss_family)
685     continue;
686     if (ip_in->ss.ss_family == AF_INET6)
687     {
688     ptr_v6 = (struct sockaddr_in6 *)&ptr->ip;
689     res = memcmp(&v6->sin6_addr, &ptr_v6->sin6_addr, sizeof(struct in6_addr));
690     }
691     else
692     #endif
693     {
694     ptr_v4 = (struct sockaddr_in *)&ptr->ip;
695     res = memcmp(&v4->sin_addr, &ptr_v4->sin_addr, sizeof(struct in_addr));
696     }
697     if (res == 0)
698     {
699     /* Found entry already in hash, return it. */
700     return ptr;
701     }
702     }
703    
704     if (ip_entries_count >= 2 * hard_fdlimit)
705     garbage_collect_ip_entries();
706    
707 michael 1654 newptr = mp_pool_get(ip_entry_pool);
708     memset(newptr, 0, sizeof(*newptr));
709 adx 30 ip_entries_count++;
710     memcpy(&newptr->ip, ip_in, sizeof(struct irc_ssaddr));
711    
712     newptr->next = ip_hash_table[hash_index];
713     ip_hash_table[hash_index] = newptr;
714    
715     return newptr;
716     }
717    
718     /* remove_one_ip()
719     *
720     * inputs - unsigned long IP address value
721     * output - NONE
722     * side effects - The ip address given, is looked up in ip hash table
723     * and number of ip#'s for that ip decremented.
724     * If ip # count reaches 0 and has expired,
725     * the struct ip_entry is returned to the ip_entry_heap
726     */
727     void
728     remove_one_ip(struct irc_ssaddr *ip_in)
729     {
730     struct ip_entry *ptr;
731     struct ip_entry *last_ptr = NULL;
732     int hash_index = hash_ip(ip_in), res;
733     struct sockaddr_in *v4 = (struct sockaddr_in *)ip_in, *ptr_v4;
734     #ifdef IPV6
735     struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)ip_in, *ptr_v6;
736     #endif
737    
738     for (ptr = ip_hash_table[hash_index]; ptr; ptr = ptr->next)
739     {
740     #ifdef IPV6
741     if (ptr->ip.ss.ss_family != ip_in->ss.ss_family)
742     continue;
743     if (ip_in->ss.ss_family == AF_INET6)
744     {
745     ptr_v6 = (struct sockaddr_in6 *)&ptr->ip;
746     res = memcmp(&v6->sin6_addr, &ptr_v6->sin6_addr, sizeof(struct in6_addr));
747     }
748     else
749     #endif
750     {
751     ptr_v4 = (struct sockaddr_in *)&ptr->ip;
752     res = memcmp(&v4->sin_addr, &ptr_v4->sin_addr, sizeof(struct in_addr));
753     }
754     if (res)
755     continue;
756     if (ptr->count > 0)
757     ptr->count--;
758     if (ptr->count == 0 &&
759     (CurrentTime-ptr->last_attempt) >= ConfigFileEntry.throttle_time)
760     {
761     if (last_ptr != NULL)
762     last_ptr->next = ptr->next;
763     else
764     ip_hash_table[hash_index] = ptr->next;
765    
766 michael 1654 mp_pool_release(ptr);
767 adx 30 ip_entries_count--;
768     return;
769     }
770     last_ptr = ptr;
771     }
772     }
773    
774     /* hash_ip()
775     *
776     * input - pointer to an irc_inaddr
777     * output - integer value used as index into hash table
778     * side effects - hopefully, none
779     */
780     static int
781     hash_ip(struct irc_ssaddr *addr)
782     {
783     if (addr->ss.ss_family == AF_INET)
784     {
785     struct sockaddr_in *v4 = (struct sockaddr_in *)addr;
786     int hash;
787 michael 1032 uint32_t ip;
788 adx 30
789     ip = ntohl(v4->sin_addr.s_addr);
790     hash = ((ip >> 12) + ip) & (IP_HASH_SIZE-1);
791     return hash;
792     }
793     #ifdef IPV6
794     else
795     {
796     int hash;
797     struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)addr;
798 michael 1032 uint32_t *ip = (uint32_t *)&v6->sin6_addr.s6_addr;
799 adx 30
800     hash = ip[0] ^ ip[3];
801     hash ^= hash >> 16;
802     hash ^= hash >> 8;
803     hash = hash & (IP_HASH_SIZE - 1);
804     return hash;
805     }
806     #else
807     return 0;
808     #endif
809     }
810    
811     /* count_ip_hash()
812     *
813     * inputs - pointer to counter of number of ips hashed
814     * - pointer to memory used for ip hash
815     * output - returned via pointers input
816     * side effects - NONE
817     *
818     * number of hashed ip #'s is counted up, plus the amount of memory
819     * used in the hash.
820     */
821     void
822 michael 948 count_ip_hash(unsigned int *number_ips_stored, uint64_t *mem_ips_stored)
823 adx 30 {
824     struct ip_entry *ptr;
825     int i;
826    
827     *number_ips_stored = 0;
828     *mem_ips_stored = 0;
829    
830     for (i = 0; i < IP_HASH_SIZE; i++)
831     {
832     for (ptr = ip_hash_table[i]; ptr; ptr = ptr->next)
833     {
834     *number_ips_stored += 1;
835     *mem_ips_stored += sizeof(struct ip_entry);
836     }
837     }
838     }
839    
840     /* garbage_collect_ip_entries()
841     *
842     * input - NONE
843     * output - NONE
844     * side effects - free up all ip entries with no connections
845     */
846     static void
847     garbage_collect_ip_entries(void)
848     {
849     struct ip_entry *ptr;
850     struct ip_entry *last_ptr;
851     struct ip_entry *next_ptr;
852     int i;
853    
854     for (i = 0; i < IP_HASH_SIZE; i++)
855     {
856     last_ptr = NULL;
857    
858     for (ptr = ip_hash_table[i]; ptr; ptr = next_ptr)
859     {
860     next_ptr = ptr->next;
861    
862     if (ptr->count == 0 &&
863     (CurrentTime - ptr->last_attempt) >= ConfigFileEntry.throttle_time)
864     {
865     if (last_ptr != NULL)
866     last_ptr->next = ptr->next;
867     else
868     ip_hash_table[i] = ptr->next;
869 michael 1654 mp_pool_release(ptr);
870 adx 30 ip_entries_count--;
871     }
872     else
873     last_ptr = ptr;
874     }
875     }
876     }
877    
878     /* detach_conf()
879     *
880     * inputs - pointer to client to detach
881     * - type of conf to detach
882     * output - 0 for success, -1 for failure
883     * side effects - Disassociate configuration from the client.
884     * Also removes a class from the list if marked for deleting.
885     */
886 michael 1632 void
887     detach_conf(struct Client *client_p, enum maskitem_type type)
888 adx 30 {
889 michael 1632 dlink_node *ptr = NULL, *next_ptr = NULL;
890 adx 30
891     DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->confs.head)
892     {
893 michael 1645 struct MaskItem *conf = ptr->data;
894 adx 30
895 michael 1645 assert(conf->type & (CONF_CLIENT | CONF_OPER | CONF_SERVER));
896     assert(conf->ref_count > 0);
897     assert(conf->class->ref_count > 0);
898 adx 30
899 michael 1645 if (!(conf->type & type))
900     continue;
901 michael 671
902 michael 1645 dlinkDelete(ptr, &client_p->localClient->confs);
903     free_dlink_node(ptr);
904 michael 1644
905 michael 1645 if (conf->type == CONF_CLIENT)
906     remove_from_cidr_check(&client_p->localClient->ip, conf->class);
907 adx 30
908 michael 1645 if (--conf->class->ref_count == 0 && conf->class->active == 0)
909     {
910     class_free(conf->class);
911     conf->class = NULL;
912 adx 30 }
913 michael 1645
914     if (--conf->ref_count == 0 && conf->active == 0)
915     conf_free(conf);
916 adx 30 }
917     }
918    
919     /* attach_conf()
920     *
921     * inputs - client pointer
922     * - conf pointer
923     * output -
924     * side effects - Associate a specific configuration entry to a *local*
925     * client (this is the one which used in accepting the
926     * connection). Note, that this automatically changes the
927     * attachment if there was an old one...
928     */
929     int
930 michael 1632 attach_conf(struct Client *client_p, struct MaskItem *conf)
931 adx 30 {
932     if (dlinkFind(&client_p->localClient->confs, conf) != NULL)
933     return 1;
934    
935 michael 1632 if (conf->type == CONF_CLIENT)
936     if (cidr_limit_reached(IsConfExemptLimits(conf),
937     &client_p->localClient->ip, conf->class))
938 michael 1394 return TOO_MANY; /* Already at maximum allowed */
939 adx 30
940 michael 1632 conf->class->ref_count++;
941 michael 1644 conf->ref_count++;
942 adx 30
943     dlinkAdd(conf, make_dlink_node(), &client_p->localClient->confs);
944    
945     return 0;
946     }
947    
948     /* attach_connect_block()
949     *
950     * inputs - pointer to server to attach
951     * - name of server
952     * - hostname of server
953     * output - true (1) if both are found, otherwise return false (0)
954     * side effects - find connect block and attach them to connecting client
955     */
956     int
957     attach_connect_block(struct Client *client_p, const char *name,
958     const char *host)
959     {
960     dlink_node *ptr;
961 michael 1632 struct MaskItem *conf = NULL;
962 adx 30
963     assert(client_p != NULL);
964     assert(host != NULL);
965    
966     if (client_p == NULL || host == NULL)
967     return 0;
968    
969     DLINK_FOREACH(ptr, server_items.head)
970     {
971     conf = ptr->data;
972    
973 michael 1652 if (match(conf->name, name) || match(conf->host, host))
974 adx 30 continue;
975    
976     attach_conf(client_p, conf);
977     return -1;
978     }
979    
980     return 0;
981     }
982    
983     /* find_conf_name()
984     *
985     * inputs - pointer to conf link list to search
986     * - pointer to name to find
987     * - int mask of type of conf to find
988     * output - NULL or pointer to conf found
989     * side effects - find a conf entry which matches the name
990     * and has the given mask.
991     */
992 michael 1632 struct MaskItem *
993     find_conf_name(dlink_list *list, const char *name, enum maskitem_type type)
994 adx 30 {
995     dlink_node *ptr;
996 michael 1632 struct MaskItem* conf;
997 adx 30
998     DLINK_FOREACH(ptr, list->head)
999     {
1000     conf = ptr->data;
1001    
1002     if (conf->type == type)
1003     {
1004     if (conf->name && (irccmp(conf->name, name) == 0 ||
1005 michael 1652 !match(conf->name, name)))
1006 adx 30 return conf;
1007     }
1008     }
1009    
1010     return NULL;
1011     }
1012    
1013     /* map_to_list()
1014     *
1015     * inputs - ConfType conf
1016     * output - pointer to dlink_list to use
1017     * side effects - none
1018     */
1019     static dlink_list *
1020 michael 1632 map_to_list(enum maskitem_type type)
1021 adx 30 {
1022     switch(type)
1023     {
1024 michael 1644 case CONF_RKLINE:
1025     return(&rkconf_items);
1026     break;
1027 michael 1632 case CONF_RXLINE:
1028 adx 30 return(&rxconf_items);
1029     break;
1030 michael 1632 case CONF_XLINE:
1031 adx 30 return(&xconf_items);
1032     break;
1033 michael 1632 case CONF_ULINE:
1034 adx 30 return(&uconf_items);
1035     break;
1036 michael 1632 case CONF_NRESV:
1037 adx 30 return(&nresv_items);
1038     break;
1039 michael 1632 case CONF_OPER:
1040 adx 30 return(&oconf_items);
1041     break;
1042 michael 1632 case CONF_SERVER:
1043 adx 30 return(&server_items);
1044     break;
1045 michael 1632 case CONF_SERVICE:
1046 michael 1172 return(&service_items);
1047     break;
1048 michael 1632 case CONF_CLUSTER:
1049 adx 30 return(&cluster_items);
1050     break;
1051     default:
1052     return NULL;
1053     }
1054     }
1055    
1056     /* find_matching_name_conf()
1057     *
1058     * inputs - type of link list to look in
1059     * - pointer to name string to find
1060     * - pointer to user
1061     * - pointer to host
1062 michael 1644 * - optional flags to match on as well
1063 michael 1632 * output - NULL or pointer to found struct MaskItem
1064 adx 30 * side effects - looks for a match on name field
1065     */
1066 michael 1632 struct MaskItem *
1067     find_matching_name_conf(enum maskitem_type type, const char *name, const char *user,
1068 michael 1644 const char *host, unsigned int flags)
1069 adx 30 {
1070     dlink_node *ptr=NULL;
1071 michael 1632 struct MaskItem *conf=NULL;
1072 adx 30 dlink_list *list_p = map_to_list(type);
1073    
1074     switch (type)
1075     {
1076 michael 1009 #ifdef HAVE_LIBPCRE
1077 michael 1632 case CONF_RXLINE:
1078 adx 30 DLINK_FOREACH(ptr, list_p->head)
1079     {
1080     conf = ptr->data;
1081 michael 1654 assert(conf->regexuser);
1082 adx 30
1083 michael 1632 if (!ircd_pcre_exec(conf->regexuser, name))
1084 adx 30 return conf;
1085     }
1086     break;
1087 michael 1009 #endif
1088 michael 1632 case CONF_SERVICE:
1089 michael 1157 DLINK_FOREACH(ptr, list_p->head)
1090     {
1091     conf = ptr->data;
1092    
1093     if (EmptyString(conf->name))
1094     continue;
1095     if ((name != NULL) && !irccmp(name, conf->name))
1096     return conf;
1097     }
1098     break;
1099    
1100 michael 1632 case CONF_XLINE:
1101     case CONF_ULINE:
1102     case CONF_NRESV:
1103 adx 30 DLINK_FOREACH(ptr, list_p->head)
1104     {
1105     conf = ptr->data;
1106    
1107     if (EmptyString(conf->name))
1108     continue;
1109 michael 1653 if ((name != NULL) && !match(conf->name, name))
1110 adx 30 {
1111     if ((user == NULL && (host == NULL)))
1112     return conf;
1113 michael 1644 if ((conf->flags & flags) != flags)
1114 adx 30 continue;
1115 michael 1632 if (EmptyString(conf->user) || EmptyString(conf->host))
1116 adx 30 return conf;
1117 michael 1652 if (!match(conf->user, user) && !match(conf->host, host))
1118 adx 30 return conf;
1119     }
1120     }
1121     break;
1122    
1123 michael 1632 case CONF_SERVER:
1124 adx 30 DLINK_FOREACH(ptr, list_p->head)
1125     {
1126     conf = ptr->data;
1127    
1128 michael 1652 if ((name != NULL) && !match(name, conf->name))
1129 adx 30 return conf;
1130 michael 1652 else if ((host != NULL) && !match(host, conf->host))
1131 adx 30 return conf;
1132     }
1133     break;
1134    
1135     default:
1136     break;
1137     }
1138     return NULL;
1139     }
1140    
1141     /* find_exact_name_conf()
1142     *
1143     * inputs - type of link list to look in
1144     * - pointer to name string to find
1145     * - pointer to user
1146     * - pointer to host
1147 michael 1632 * output - NULL or pointer to found struct MaskItem
1148 adx 30 * side effects - looks for an exact match on name field
1149     */
1150 michael 1632 struct MaskItem *
1151     find_exact_name_conf(enum maskitem_type type, const struct Client *who, const char *name,
1152 adx 30 const char *user, const char *host)
1153     {
1154     dlink_node *ptr = NULL;
1155 michael 1632 struct MaskItem *conf;
1156     dlink_list *list_p = map_to_list(type);
1157 adx 30
1158     switch(type)
1159     {
1160 michael 1632 case CONF_RXLINE:
1161     case CONF_XLINE:
1162     case CONF_ULINE:
1163     case CONF_NRESV:
1164 adx 30
1165     DLINK_FOREACH(ptr, list_p->head)
1166     {
1167     conf = ptr->data;
1168 michael 1632
1169 adx 30 if (EmptyString(conf->name))
1170     continue;
1171    
1172     if (irccmp(conf->name, name) == 0)
1173     {
1174     if ((user == NULL && (host == NULL)))
1175     return (conf);
1176 michael 1632 if (EmptyString(conf->user) || EmptyString(conf->host))
1177 adx 30 return (conf);
1178 michael 1652 if (!match(conf->user, user) && !match(conf->host, host))
1179 adx 30 return (conf);
1180     }
1181     }
1182     break;
1183    
1184 michael 1632 case CONF_OPER:
1185 adx 30 DLINK_FOREACH(ptr, list_p->head)
1186     {
1187     conf = ptr->data;
1188 michael 1285
1189 adx 30 if (EmptyString(conf->name))
1190 michael 1285 continue;
1191    
1192     if (!irccmp(conf->name, name))
1193 adx 30 {
1194 michael 1285 if (!who)
1195     return conf;
1196 michael 1632 if (EmptyString(conf->user) || EmptyString(conf->host))
1197 michael 1636 return NULL;
1198 michael 1652 if (!match(conf->user, who->username))
1199 michael 1285 {
1200 michael 1632 switch (conf->htype)
1201 michael 1285 {
1202     case HM_HOST:
1203 michael 1652 if (!match(conf->host, who->host) || !match(conf->host, who->sockhost))
1204 michael 1637 if (!conf->class->max_total || conf->class->ref_count < conf->class->max_total)
1205     return conf;
1206 michael 1285 break;
1207     case HM_IPV4:
1208     if (who->localClient->aftype == AF_INET)
1209 michael 1632 if (match_ipv4(&who->localClient->ip, &conf->addr, conf->bits))
1210 michael 1637 if (!conf->class->max_total || conf->class->ref_count < conf->class->max_total)
1211     return conf;
1212 michael 1285 break;
1213     #ifdef IPV6
1214     case HM_IPV6:
1215     if (who->localClient->aftype == AF_INET6)
1216 michael 1632 if (match_ipv6(&who->localClient->ip, &conf->addr, conf->bits))
1217 michael 1637 if (!conf->class->max_total || conf->class->ref_count < conf->class->max_total)
1218     return conf;
1219 michael 1285 break;
1220     #endif
1221     default:
1222     assert(0);
1223     }
1224     }
1225 adx 30 }
1226     }
1227 michael 1285
1228 adx 30 break;
1229    
1230 michael 1632 case CONF_SERVER:
1231 adx 30 DLINK_FOREACH(ptr, list_p->head)
1232     {
1233     conf = ptr->data;
1234 michael 1632
1235 adx 30 if (EmptyString(conf->name))
1236     continue;
1237    
1238     if (name == NULL)
1239     {
1240 michael 1632 if (EmptyString(conf->host))
1241 adx 30 continue;
1242 michael 1632 if (irccmp(conf->host, host) == 0)
1243 adx 30 return(conf);
1244     }
1245     else if (irccmp(conf->name, name) == 0)
1246     {
1247     return (conf);
1248     }
1249     }
1250     break;
1251    
1252     default:
1253     break;
1254     }
1255     return(NULL);
1256     }
1257    
1258     /* rehash()
1259     *
1260     * Actual REHASH service routine. Called with sig == 0 if it has been called
1261     * as a result of an operator issuing this command, else assume it has been
1262     * called as a result of the server receiving a HUP signal.
1263     */
1264     int
1265     rehash(int sig)
1266     {
1267     if (sig != 0)
1268 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1269 adx 30 "Got signal SIGHUP, reloading ircd.conf file");
1270    
1271     restart_resolver();
1272 michael 1001
1273 adx 30 /* don't close listeners until we know we can go ahead with the rehash */
1274    
1275     /* Check to see if we magically got(or lost) IPv6 support */
1276     check_can_use_v6();
1277    
1278     read_conf_files(0);
1279    
1280     if (ServerInfo.description != NULL)
1281     strlcpy(me.info, ServerInfo.description, sizeof(me.info));
1282    
1283     load_conf_modules();
1284    
1285     rehashed_klines = 1;
1286 michael 1247 /* XXX */
1287 adx 30 if (ConfigLoggingEntry.use_logging)
1288 michael 1247 log_close_all();
1289 adx 30
1290     return(0);
1291     }
1292    
1293     /* set_default_conf()
1294     *
1295     * inputs - NONE
1296     * output - NONE
1297     * side effects - Set default values here.
1298     * This is called **PRIOR** to parsing the
1299     * configuration file. If you want to do some validation
1300     * of values later, put them in validate_conf().
1301     */
1302     static void
1303     set_default_conf(void)
1304     {
1305     /* verify init_class() ran, this should be an unnecessary check
1306     * but its not much work.
1307     */
1308 michael 1644 assert(class_default == class_get_list()->tail->data);
1309 adx 30
1310     #ifdef HAVE_LIBCRYPTO
1311     ServerInfo.rsa_private_key = NULL;
1312     ServerInfo.rsa_private_key_file = NULL;
1313     #endif
1314    
1315     /* ServerInfo.name is not rehashable */
1316     /* ServerInfo.name = ServerInfo.name; */
1317     ServerInfo.description = NULL;
1318 michael 1646 ServerInfo.network_name = xstrdup(NETWORK_NAME_DEFAULT);
1319     ServerInfo.network_desc = xstrdup(NETWORK_DESC_DEFAULT);
1320 adx 30
1321     memset(&ServerInfo.ip, 0, sizeof(ServerInfo.ip));
1322     ServerInfo.specific_ipv4_vhost = 0;
1323     memset(&ServerInfo.ip6, 0, sizeof(ServerInfo.ip6));
1324     ServerInfo.specific_ipv6_vhost = 0;
1325    
1326     ServerInfo.max_clients = MAXCLIENTS_MAX;
1327 michael 956
1328     ServerInfo.hub = 0;
1329 adx 30 ServerInfo.dns_host.sin_addr.s_addr = 0;
1330     ServerInfo.dns_host.sin_port = 0;
1331     AdminInfo.name = NULL;
1332     AdminInfo.email = NULL;
1333     AdminInfo.description = NULL;
1334    
1335 michael 1247 log_close_all();
1336    
1337 adx 30 ConfigLoggingEntry.use_logging = 1;
1338    
1339 michael 1243 ConfigChannel.disable_fake_channels = 0;
1340     ConfigChannel.restrict_channels = 0;
1341 adx 30 ConfigChannel.knock_delay = 300;
1342     ConfigChannel.knock_delay_channel = 60;
1343 michael 1432 ConfigChannel.max_chans_per_user = 25;
1344 michael 1444 ConfigChannel.max_chans_per_oper = 50;
1345 michael 1243 ConfigChannel.quiet_on_ban = 1;
1346 adx 30 ConfigChannel.max_bans = 25;
1347     ConfigChannel.default_split_user_count = 0;
1348     ConfigChannel.default_split_server_count = 0;
1349 michael 1243 ConfigChannel.no_join_on_split = 0;
1350     ConfigChannel.no_create_on_split = 0;
1351 adx 30
1352 michael 1243 ConfigServerHide.flatten_links = 0;
1353 adx 30 ConfigServerHide.links_delay = 300;
1354 michael 1243 ConfigServerHide.hidden = 0;
1355     ConfigServerHide.hide_servers = 0;
1356 michael 1646 ConfigServerHide.hidden_name = xstrdup(NETWORK_NAME_DEFAULT);
1357 michael 1243 ConfigServerHide.hide_server_ips = 0;
1358 adx 30
1359 michael 876
1360 michael 1646 ConfigFileEntry.service_name = xstrdup(SERVICE_NAME_DEFAULT);
1361 michael 876 ConfigFileEntry.max_watch = WATCHSIZE_DEFAULT;
1362 michael 1459 ConfigFileEntry.glines = 0;
1363     ConfigFileEntry.gline_time = 12 * 3600;
1364     ConfigFileEntry.gline_request_time = GLINE_REQUEST_EXPIRE_DEFAULT;
1365 adx 30 ConfigFileEntry.gline_min_cidr = 16;
1366     ConfigFileEntry.gline_min_cidr6 = 48;
1367 michael 1243 ConfigFileEntry.invisible_on_connect = 1;
1368     ConfigFileEntry.tkline_expire_notices = 1;
1369     ConfigFileEntry.hide_spoof_ips = 1;
1370     ConfigFileEntry.ignore_bogus_ts = 0;
1371     ConfigFileEntry.disable_auth = 0;
1372     ConfigFileEntry.disable_remote = 0;
1373 adx 30 ConfigFileEntry.kill_chase_time_limit = 90;
1374 michael 1119 ConfigFileEntry.default_floodcount = 8;
1375 michael 1243 ConfigFileEntry.failed_oper_notice = 1;
1376 michael 1119 ConfigFileEntry.dots_in_ident = 0;
1377 adx 30 ConfigFileEntry.min_nonwildcard = 4;
1378     ConfigFileEntry.min_nonwildcard_simple = 3;
1379     ConfigFileEntry.max_accept = 20;
1380 michael 1243 ConfigFileEntry.anti_nick_flood = 0;
1381 adx 30 ConfigFileEntry.max_nick_time = 20;
1382     ConfigFileEntry.max_nick_changes = 5;
1383 michael 1119 ConfigFileEntry.anti_spam_exit_message_time = 0;
1384 adx 30 ConfigFileEntry.ts_warn_delta = TS_WARN_DELTA_DEFAULT;
1385 michael 1119 ConfigFileEntry.ts_max_delta = TS_MAX_DELTA_DEFAULT;
1386 michael 1243 ConfigFileEntry.warn_no_nline = 1;
1387     ConfigFileEntry.stats_o_oper_only = 0;
1388 adx 30 ConfigFileEntry.stats_k_oper_only = 1; /* masked */
1389     ConfigFileEntry.stats_i_oper_only = 1; /* masked */
1390 michael 1243 ConfigFileEntry.stats_P_oper_only = 0;
1391 adx 30 ConfigFileEntry.caller_id_wait = 60;
1392 michael 1243 ConfigFileEntry.opers_bypass_callerid = 0;
1393 adx 30 ConfigFileEntry.pace_wait = 10;
1394     ConfigFileEntry.pace_wait_simple = 1;
1395 michael 1243 ConfigFileEntry.short_motd = 0;
1396     ConfigFileEntry.ping_cookie = 0;
1397     ConfigFileEntry.no_oper_flood = 0;
1398     ConfigFileEntry.true_no_oper_flood = 0;
1399     ConfigFileEntry.oper_pass_resv = 1;
1400 adx 30 ConfigFileEntry.max_targets = MAX_TARGETS_DEFAULT;
1401 michael 1119 ConfigFileEntry.oper_only_umodes = UMODE_DEBUG;
1402 adx 264 ConfigFileEntry.oper_umodes = UMODE_BOTS | UMODE_LOCOPS | UMODE_SERVNOTICE |
1403 michael 1119 UMODE_OPERWALL | UMODE_WALLOP;
1404 michael 1243 ConfigFileEntry.use_egd = 0;
1405 adx 30 ConfigFileEntry.egdpool_path = NULL;
1406     ConfigFileEntry.throttle_time = 10;
1407     }
1408    
1409     static void
1410     validate_conf(void)
1411     {
1412     if (ConfigFileEntry.ts_warn_delta < TS_WARN_DELTA_MIN)
1413     ConfigFileEntry.ts_warn_delta = TS_WARN_DELTA_DEFAULT;
1414    
1415     if (ConfigFileEntry.ts_max_delta < TS_MAX_DELTA_MIN)
1416     ConfigFileEntry.ts_max_delta = TS_MAX_DELTA_DEFAULT;
1417    
1418     if (ServerInfo.network_name == NULL)
1419 michael 1646 ServerInfo.network_name = xstrdup(NETWORK_NAME_DEFAULT);
1420 adx 30
1421     if (ServerInfo.network_desc == NULL)
1422 michael 1646 ServerInfo.network_desc = xstrdup(NETWORK_DESC_DEFAULT);
1423 adx 30
1424 michael 1157 if (ConfigFileEntry.service_name == NULL)
1425 michael 1646 ConfigFileEntry.service_name = xstrdup(SERVICE_NAME_DEFAULT);
1426 michael 1157
1427 michael 876 ConfigFileEntry.max_watch = IRCD_MAX(ConfigFileEntry.max_watch, WATCHSIZE_MIN);
1428 adx 30 }
1429    
1430 michael 1363 /* read_conf()
1431     *
1432     * inputs - file descriptor pointing to config file to use
1433     * output - None
1434     * side effects - Read configuration file.
1435     */
1436     static void
1437     read_conf(FILE *file)
1438     {
1439     lineno = 0;
1440    
1441     set_default_conf(); /* Set default values prior to conf parsing */
1442     conf_parser_ctx.pass = 1;
1443     yyparse(); /* pick up the classes first */
1444    
1445     rewind(file);
1446    
1447     conf_parser_ctx.pass = 2;
1448     yyparse(); /* Load the values from the conf */
1449     validate_conf(); /* Check to make sure some values are still okay. */
1450     /* Some global values are also loaded here. */
1451 michael 1632 class_delete_marked(); /* Make sure classes are valid */
1452 michael 1363 }
1453    
1454 adx 30 /* lookup_confhost()
1455     *
1456     * start DNS lookups of all hostnames in the conf
1457     * line and convert an IP addresses in a.b.c.d number for to IP#s.
1458     */
1459 michael 1647 void
1460 michael 1632 lookup_confhost(struct MaskItem *conf)
1461 adx 30 {
1462     struct addrinfo hints, *res;
1463    
1464     /* Do name lookup now on hostnames given and store the
1465     * ip numbers in conf structure.
1466     */
1467     memset(&hints, 0, sizeof(hints));
1468    
1469     hints.ai_family = AF_UNSPEC;
1470     hints.ai_socktype = SOCK_STREAM;
1471    
1472     /* Get us ready for a bind() and don't bother doing dns lookup */
1473     hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
1474    
1475 michael 1632 if (getaddrinfo(conf->host, NULL, &hints, &res))
1476 adx 30 {
1477 michael 1632 conf_dns_lookup(conf);
1478 adx 30 return;
1479     }
1480    
1481     assert(res != NULL);
1482    
1483 michael 1632 memcpy(&conf->addr, res->ai_addr, res->ai_addrlen);
1484     conf->addr.ss_len = res->ai_addrlen;
1485     conf->addr.ss.ss_family = res->ai_family;
1486    
1487 michael 1123 freeaddrinfo(res);
1488 adx 30 }
1489    
1490     /* conf_connect_allowed()
1491     *
1492     * inputs - pointer to inaddr
1493     * - int type ipv4 or ipv6
1494     * output - BANNED or accepted
1495     * side effects - none
1496     */
1497     int
1498     conf_connect_allowed(struct irc_ssaddr *addr, int aftype)
1499     {
1500     struct ip_entry *ip_found;
1501 michael 1632 struct MaskItem *conf = find_dline_conf(addr, aftype);
1502 adx 30
1503     /* DLINE exempt also gets you out of static limits/pacing... */
1504 michael 1636 if (conf && (conf->type == CONF_EXEMPT))
1505 adx 30 return 0;
1506    
1507 michael 1632 if (conf != NULL)
1508 adx 30 return BANNED_CLIENT;
1509    
1510     ip_found = find_or_add_ip(addr);
1511    
1512     if ((CurrentTime - ip_found->last_attempt) <
1513     ConfigFileEntry.throttle_time)
1514     {
1515     ip_found->last_attempt = CurrentTime;
1516     return TOO_FAST;
1517     }
1518    
1519     ip_found->last_attempt = CurrentTime;
1520     return 0;
1521     }
1522    
1523 michael 1632 static struct MaskItem *
1524 adx 30 find_regexp_kline(const char *uhi[])
1525     {
1526 michael 1009 #ifdef HAVE_LIBPCRE
1527 adx 30 const dlink_node *ptr = NULL;
1528    
1529     DLINK_FOREACH(ptr, rkconf_items.head)
1530     {
1531 michael 1632 struct MaskItem *aptr = ptr->data;
1532 adx 30
1533     assert(aptr->regexuser);
1534     assert(aptr->regexhost);
1535    
1536     if (!ircd_pcre_exec(aptr->regexuser, uhi[0]) &&
1537     (!ircd_pcre_exec(aptr->regexhost, uhi[1]) ||
1538     !ircd_pcre_exec(aptr->regexhost, uhi[2])))
1539     return aptr;
1540     }
1541 michael 1009 #endif
1542 adx 30 return NULL;
1543     }
1544    
1545     /* find_kill()
1546     *
1547     * inputs - pointer to client structure
1548 michael 1632 * output - pointer to struct MaskItem if found
1549 adx 30 * side effects - See if this user is klined already,
1550 michael 1632 * and if so, return struct MaskItem pointer
1551 adx 30 */
1552 michael 1632 struct MaskItem *
1553 adx 30 find_kill(struct Client *client_p)
1554     {
1555 michael 1632 struct MaskItem *conf = NULL;
1556 adx 30 const char *uhi[3];
1557    
1558     uhi[0] = client_p->username;
1559     uhi[1] = client_p->host;
1560     uhi[2] = client_p->sockhost;
1561    
1562     assert(client_p != NULL);
1563    
1564 michael 1632 conf = find_conf_by_address(client_p->host, &client_p->localClient->ip,
1565     CONF_KLINE, client_p->localClient->aftype,
1566     client_p->username, NULL, 1);
1567     if (conf == NULL)
1568     conf = find_regexp_kline(uhi);
1569 adx 30
1570 michael 1632 return conf;
1571 adx 30 }
1572    
1573 michael 1632 struct MaskItem *
1574 adx 30 find_gline(struct Client *client_p)
1575     {
1576 michael 1632 struct MaskItem *conf;
1577 adx 30
1578     assert(client_p != NULL);
1579    
1580 michael 1632 conf = find_conf_by_address(client_p->host, &client_p->localClient->ip,
1581     CONF_GLINE, client_p->localClient->aftype,
1582     client_p->username, NULL, 1);
1583     return conf;
1584 adx 30 }
1585    
1586     /* cleanup_tklines()
1587     *
1588     * inputs - NONE
1589     * output - NONE
1590     * side effects - call function to expire temporary k/d lines
1591     * This is an event started off in ircd.c
1592     */
1593     void
1594     cleanup_tklines(void *notused)
1595     {
1596 michael 1369 hostmask_expire_temporary();
1597 michael 1622 expire_tklines(&xconf_items);
1598 michael 1628 expire_tklines(&nresv_items);
1599     expire_tklines(&resv_channel_list);
1600 adx 30 }
1601    
1602     /* expire_tklines()
1603     *
1604     * inputs - tkline list pointer
1605     * output - NONE
1606     * side effects - expire tklines
1607     */
1608     static void
1609     expire_tklines(dlink_list *tklist)
1610     {
1611     dlink_node *ptr;
1612     dlink_node *next_ptr;
1613 michael 1632 struct MaskItem *conf;
1614 adx 30
1615     DLINK_FOREACH_SAFE(ptr, next_ptr, tklist->head)
1616     {
1617     conf = ptr->data;
1618    
1619 michael 1649 if (!conf->until || conf->until > CurrentTime)
1620 michael 1644 continue;
1621    
1622 michael 1632 if (conf->type == CONF_XLINE)
1623 adx 30 {
1624 michael 1644 if (ConfigFileEntry.tkline_expire_notices)
1625     sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1626 michael 1618 "Temporary X-line for [%s] expired", conf->name);
1627 michael 1644 conf_free(conf);
1628 adx 30 }
1629 michael 1632 else if (conf->type == CONF_NRESV)
1630 adx 30 {
1631 michael 1644 if (ConfigFileEntry.tkline_expire_notices)
1632     sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1633 adx 30 "Temporary RESV for [%s] expired", conf->name);
1634 michael 1644 conf_free(conf);
1635 adx 30 }
1636 michael 1632 else if (conf->type == CONF_CRESV)
1637 michael 1644 {
1638     if (ConfigFileEntry.tkline_expire_notices)
1639     sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1640 michael 1632 "Temporary RESV for [%s] expired", conf->name);
1641 michael 1644 delete_channel_resv(conf);
1642 adx 30 }
1643     }
1644     }
1645    
1646     /* oper_privs_as_string()
1647     *
1648 michael 58 * inputs - pointer to client_p
1649 adx 30 * output - pointer to static string showing oper privs
1650     * side effects - return as string, the oper privs as derived from port
1651     */
1652 michael 58 static const struct oper_privs
1653     {
1654 michael 1644 const unsigned int flag;
1655 michael 58 const unsigned char c;
1656     } flag_list[] = {
1657 michael 1294 { OPER_FLAG_ADMIN, 'A' },
1658     { OPER_FLAG_REMOTEBAN, 'B' },
1659     { OPER_FLAG_DIE, 'D' },
1660     { OPER_FLAG_GLINE, 'G' },
1661     { OPER_FLAG_REHASH, 'H' },
1662     { OPER_FLAG_K, 'K' },
1663     { OPER_FLAG_OPERWALL, 'L' },
1664     { OPER_FLAG_N, 'N' },
1665     { OPER_FLAG_GLOBAL_KILL, 'O' },
1666     { OPER_FLAG_REMOTE, 'R' },
1667     { OPER_FLAG_OPER_SPY, 'S' },
1668     { OPER_FLAG_UNKLINE, 'U' },
1669     { OPER_FLAG_X, 'X' },
1670     { 0, '\0' }
1671 michael 58 };
1672 adx 30
1673     char *
1674     oper_privs_as_string(const unsigned int port)
1675     {
1676 michael 58 static char privs_out[16];
1677     char *privs_ptr = privs_out;
1678 michael 1644 const struct oper_privs *opriv = flag_list;
1679 adx 30
1680 michael 1644 for (; opriv->flag; ++opriv)
1681 michael 58 {
1682 michael 1644 if (port & opriv->flag)
1683     *privs_ptr++ = opriv->c;
1684 michael 58 else
1685 michael 1644 *privs_ptr++ = ToLower(opriv->c);
1686 michael 58 }
1687    
1688     *privs_ptr = '\0';
1689    
1690 adx 30 return privs_out;
1691     }
1692    
1693     /*
1694     * Input: A client to find the active oper{} name for.
1695     * Output: The nick!user@host{oper} of the oper.
1696     * "oper" is server name for remote opers
1697     * Side effects: None.
1698     */
1699 michael 1364 const char *
1700 adx 30 get_oper_name(const struct Client *client_p)
1701     {
1702 michael 1364 dlink_node *cnode = NULL;
1703 adx 30 /* +5 for !,@,{,} and null */
1704 michael 1147 static char buffer[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5];
1705 adx 30
1706     if (MyConnect(client_p))
1707     {
1708 michael 1364 if ((cnode = client_p->localClient->confs.head))
1709 adx 30 {
1710 michael 1632 struct MaskItem *conf = cnode->data;
1711 adx 30
1712 michael 1632 if (IsConfOperator(conf))
1713 adx 30 {
1714 michael 1147 snprintf(buffer, sizeof(buffer), "%s!%s@%s{%s}", client_p->name,
1715     client_p->username, client_p->host, conf->name);
1716 adx 30 return buffer;
1717     }
1718     }
1719    
1720     /* Probably should assert here for now. If there is an oper out there
1721     * with no oper{} conf attached, it would be good for us to know...
1722     */
1723     assert(0); /* Oper without oper conf! */
1724     }
1725    
1726 michael 1147 snprintf(buffer, sizeof(buffer), "%s!%s@%s{%s}", client_p->name,
1727     client_p->username, client_p->host, client_p->servptr->name);
1728 adx 30 return buffer;
1729     }
1730    
1731     /* read_conf_files()
1732     *
1733     * inputs - cold start YES or NO
1734     * output - none
1735     * side effects - read all conf files needed, ircd.conf kline.conf etc.
1736     */
1737     void
1738     read_conf_files(int cold)
1739     {
1740     const char *filename;
1741     char chanmodes[32];
1742     char chanlimit[32];
1743    
1744 michael 967 conf_parser_ctx.boot = cold;
1745 michael 1622 filename = ConfigFileEntry.configfile;
1746 adx 30
1747     /* We need to know the initial filename for the yyerror() to report
1748     FIXME: The full path is in conffilenamebuf first time since we
1749     dont know anything else
1750    
1751     - Gozem 2002-07-21
1752     */
1753     strlcpy(conffilebuf, filename, sizeof(conffilebuf));
1754    
1755 michael 1325 if ((conf_parser_ctx.conf_file = fopen(filename, "r")) == NULL)
1756 adx 30 {
1757     if (cold)
1758     {
1759 michael 1247 ilog(LOG_TYPE_IRCD, "Unable to read configuration file '%s': %s",
1760 adx 30 filename, strerror(errno));
1761     exit(-1);
1762     }
1763     else
1764     {
1765 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1766 adx 30 "Unable to read configuration file '%s': %s",
1767     filename, strerror(errno));
1768     return;
1769     }
1770     }
1771    
1772     if (!cold)
1773     clear_out_old_conf();
1774    
1775 michael 967 read_conf(conf_parser_ctx.conf_file);
1776 michael 1325 fclose(conf_parser_ctx.conf_file);
1777 adx 30
1778     add_isupport("NETWORK", ServerInfo.network_name, -1);
1779 michael 1495 snprintf(chanmodes, sizeof(chanmodes), "beI:%d",
1780     ConfigChannel.max_bans);
1781 adx 30 add_isupport("MAXLIST", chanmodes, -1);
1782     add_isupport("MAXTARGETS", NULL, ConfigFileEntry.max_targets);
1783 michael 1147
1784 michael 1474 add_isupport("CHANTYPES", "#", -1);
1785 michael 1147
1786 michael 1474 snprintf(chanlimit, sizeof(chanlimit), "#:%d",
1787 michael 1147 ConfigChannel.max_chans_per_user);
1788 adx 30 add_isupport("CHANLIMIT", chanlimit, -1);
1789 michael 1495 snprintf(chanmodes, sizeof(chanmodes), "%s",
1790     "beI,k,l,imnprstORS");
1791 michael 100 add_isupport("CHANNELLEN", NULL, LOCAL_CHANNELLEN);
1792 michael 1147
1793 michael 1495 add_isupport("EXCEPTS", "e", -1);
1794     add_isupport("INVEX", "I", -1);
1795 adx 30 add_isupport("CHANMODES", chanmodes, -1);
1796    
1797     /*
1798     * message_locale may have changed. rebuild isupport since it relies
1799     * on strlen(form_str(RPL_ISUPPORT))
1800     */
1801     rebuild_isupport_message_line();
1802     }
1803    
1804     /* clear_out_old_conf()
1805     *
1806     * inputs - none
1807     * output - none
1808     * side effects - Clear out the old configuration
1809     */
1810     static void
1811     clear_out_old_conf(void)
1812     {
1813     dlink_node *ptr = NULL, *next_ptr = NULL;
1814 michael 1632 struct MaskItem *conf;
1815 adx 30 dlink_list *free_items [] = {
1816 michael 1383 &server_items, &oconf_items,
1817 adx 30 &uconf_items, &xconf_items, &rxconf_items, &rkconf_items,
1818 michael 1459 &nresv_items, &cluster_items, &service_items, NULL
1819 adx 30 };
1820    
1821     dlink_list ** iterator = free_items; /* C is dumb */
1822    
1823     /* We only need to free anything allocated by yyparse() here.
1824     * Resetting structs, etc, is taken care of by set_default_conf().
1825     */
1826    
1827     for (; *iterator != NULL; iterator++)
1828     {
1829     DLINK_FOREACH_SAFE(ptr, next_ptr, (*iterator)->head)
1830     {
1831     conf = ptr->data;
1832 michael 1632
1833     dlinkDelete(&conf->node, map_to_list(conf->type));
1834    
1835 adx 30 /* XXX This is less than pretty */
1836 michael 1632 if (conf->type == CONF_SERVER || conf->type == CONF_OPER)
1837 adx 30 {
1838 michael 1644 if (!conf->ref_count)
1839 michael 1632 conf_free(conf);
1840 adx 30 }
1841 michael 1632 else if (conf->type == CONF_XLINE ||
1842     conf->type == CONF_RXLINE ||
1843     conf->type == CONF_RKLINE)
1844 adx 30 {
1845 michael 1649 if (!conf->until)
1846 michael 1632 conf_free(conf);
1847 adx 30 }
1848     else
1849 michael 1632 conf_free(conf);
1850 adx 30 }
1851     }
1852    
1853 michael 671 /*
1854     * don't delete the class table, rather mark all entries
1855 michael 1632 * for deletion. The table is cleaned up by class_delete_marked. - avalon
1856 adx 30 */
1857 michael 1632 class_mark_for_deletion();
1858 michael 671
1859 adx 30 clear_out_address_conf();
1860    
1861     /* clean out module paths */
1862     mod_clear_paths();
1863    
1864     /* clean out ServerInfo */
1865     MyFree(ServerInfo.description);
1866     ServerInfo.description = NULL;
1867     MyFree(ServerInfo.network_name);
1868     ServerInfo.network_name = NULL;
1869     MyFree(ServerInfo.network_desc);
1870     ServerInfo.network_desc = NULL;
1871     MyFree(ConfigFileEntry.egdpool_path);
1872     ConfigFileEntry.egdpool_path = NULL;
1873     #ifdef HAVE_LIBCRYPTO
1874     if (ServerInfo.rsa_private_key != NULL)
1875     {
1876     RSA_free(ServerInfo.rsa_private_key);
1877     ServerInfo.rsa_private_key = NULL;
1878     }
1879    
1880     MyFree(ServerInfo.rsa_private_key_file);
1881     ServerInfo.rsa_private_key_file = NULL;
1882 michael 1316
1883     if (ServerInfo.server_ctx)
1884     SSL_CTX_set_options(ServerInfo.server_ctx, SSL_OP_NO_SSLv2|
1885     SSL_OP_NO_SSLv3|
1886     SSL_OP_NO_TLSv1);
1887     if (ServerInfo.client_ctx)
1888     SSL_CTX_set_options(ServerInfo.client_ctx, SSL_OP_NO_SSLv2|
1889     SSL_OP_NO_SSLv3|
1890     SSL_OP_NO_TLSv1);
1891 adx 30 #endif
1892    
1893     /* clean out old resvs from the conf */
1894     clear_conf_resv();
1895    
1896     /* clean out AdminInfo */
1897     MyFree(AdminInfo.name);
1898     AdminInfo.name = NULL;
1899     MyFree(AdminInfo.email);
1900     AdminInfo.email = NULL;
1901     MyFree(AdminInfo.description);
1902     AdminInfo.description = NULL;
1903    
1904     /* clean out listeners */
1905     close_listeners();
1906    
1907     /* clean out general */
1908 michael 1157 MyFree(ConfigFileEntry.service_name);
1909     ConfigFileEntry.service_name = NULL;
1910    
1911 adx 30 delete_isupport("INVEX");
1912     delete_isupport("EXCEPTS");
1913     }
1914    
1915     /* conf_add_class_to_conf()
1916     *
1917     * inputs - pointer to config item
1918     * output - NONE
1919     * side effects - Add a class pointer to a conf
1920     */
1921     void
1922 michael 1632 conf_add_class_to_conf(struct MaskItem *conf, const char *class_name)
1923 adx 30 {
1924 michael 671 struct ClassItem *class = NULL;
1925 adx 30
1926     if (class_name == NULL)
1927     {
1928 michael 1632 conf->class = class_default;
1929 michael 671
1930 michael 1632 if (conf->type == CONF_CLIENT)
1931 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1932 adx 30 "Warning *** Defaulting to default class for %s@%s",
1933 michael 1632 conf->user, conf->host);
1934 adx 30 else
1935 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1936 adx 30 "Warning *** Defaulting to default class for %s",
1937     conf->name);
1938     }
1939     else
1940 michael 1632 conf->class = class_find(class_name, 1);
1941 adx 30
1942 michael 1632 if (conf->class == NULL)
1943 adx 30 {
1944 michael 1632 if (conf->type == CONF_CLIENT)
1945 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1946 adx 30 "Warning *** Defaulting to default class for %s@%s",
1947 michael 1632 conf->user, conf->host);
1948 adx 30 else
1949 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1950 adx 30 "Warning *** Defaulting to default class for %s",
1951     conf->name);
1952 michael 1632 conf->class = class_default;
1953 adx 30 }
1954     }
1955    
1956     /* yyerror()
1957     *
1958     * inputs - message from parser
1959     * output - NONE
1960     * side effects - message to opers and log file entry is made
1961     */
1962     void
1963     yyerror(const char *msg)
1964     {
1965     char newlinebuf[IRCD_BUFSIZE];
1966    
1967 michael 967 if (conf_parser_ctx.pass != 1)
1968 adx 30 return;
1969    
1970     strip_tabs(newlinebuf, linebuf, sizeof(newlinebuf));
1971 michael 1618 sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
1972     "\"%s\", line %u: %s: %s",
1973 adx 30 conffilebuf, lineno + 1, msg, newlinebuf);
1974 michael 1247 ilog(LOG_TYPE_IRCD, "\"%s\", line %u: %s: %s",
1975 adx 30 conffilebuf, lineno + 1, msg, newlinebuf);
1976     }
1977    
1978     /*
1979     * valid_tkline()
1980     *
1981     * inputs - pointer to ascii string to check
1982     * - whether the specified time is in seconds or minutes
1983     * output - -1 not enough parameters
1984     * - 0 if not an integer number, else the number
1985     * side effects - none
1986     * Originally written by Dianora (Diane, db@db.net)
1987     */
1988     time_t
1989 michael 1120 valid_tkline(const char *p, int minutes)
1990 adx 30 {
1991     time_t result = 0;
1992    
1993 michael 1120 for (; *p; ++p)
1994 adx 30 {
1995 michael 1120 if (!IsDigit(*p))
1996 michael 1121 return 0;
1997 michael 1120
1998     result *= 10;
1999     result += ((*p) & 0xF);
2000 adx 30 }
2001    
2002 michael 1120 /*
2003     * In the degenerate case where oper does a /quote kline 0 user@host :reason
2004 adx 30 * i.e. they specifically use 0, I am going to return 1 instead
2005     * as a return value of non-zero is used to flag it as a temporary kline
2006     */
2007     if (result == 0)
2008     result = 1;
2009    
2010     /*
2011     * If the incoming time is in seconds convert it to minutes for the purpose
2012     * of this calculation
2013     */
2014     if (!minutes)
2015     result = result / (time_t)60;
2016    
2017     if (result > MAX_TDKLINE_TIME)
2018     result = MAX_TDKLINE_TIME;
2019    
2020     result = result * (time_t)60; /* turn it into seconds */
2021    
2022     return result;
2023     }
2024    
2025     /* valid_wild_card()
2026     *
2027     * input - pointer to client
2028     * - int flag, 0 for no warning oper 1 for warning oper
2029     * - count of following varargs to check
2030     * output - 0 if not valid, 1 if valid
2031     * side effects - NOTICE is given to source_p if warn is 1
2032     */
2033     int
2034     valid_wild_card(struct Client *source_p, int warn, int count, ...)
2035     {
2036     char *p;
2037     char tmpch;
2038     int nonwild = 0;
2039     va_list args;
2040    
2041     /*
2042     * Now we must check the user and host to make sure there
2043     * are at least NONWILDCHARS non-wildcard characters in
2044     * them, otherwise assume they are attempting to kline
2045     * *@* or some variant of that. This code will also catch
2046     * people attempting to kline *@*.tld, as long as NONWILDCHARS
2047     * is greater than 3. In that case, there are only 3 non-wild
2048     * characters (tld), so if NONWILDCHARS is 4, the kline will
2049     * be disallowed.
2050     * -wnder
2051     */
2052    
2053     va_start(args, count);
2054    
2055     while (count--)
2056     {
2057     p = va_arg(args, char *);
2058     if (p == NULL)
2059     continue;
2060    
2061     while ((tmpch = *p++))
2062     {
2063     if (!IsKWildChar(tmpch))
2064     {
2065     /*
2066     * If we find enough non-wild characters, we can
2067     * break - no point in searching further.
2068     */
2069     if (++nonwild >= ConfigFileEntry.min_nonwildcard)
2070     return 1;
2071     }
2072     }
2073     }
2074    
2075     if (warn)
2076     sendto_one(source_p, ":%s NOTICE %s :Please include at least %d non-wildcard characters with the mask",
2077     me.name, source_p->name, ConfigFileEntry.min_nonwildcard);
2078     return 0;
2079     }
2080    
2081     /* XXX should this go into a separate file ? -Dianora */
2082     /* parse_aline
2083     *
2084     * input - pointer to cmd name being used
2085     * - pointer to client using cmd
2086     * - parc parameter count
2087     * - parv[] list of parameters to parse
2088     * - parse_flags bit map of things to test
2089     * - pointer to user or string to parse into
2090     * - pointer to host or NULL to parse into if non NULL
2091     * - pointer to optional tkline time or NULL
2092     * - pointer to target_server to parse into if non NULL
2093     * - pointer to reason to parse into
2094     *
2095     * output - 1 if valid, -1 if not valid
2096     * side effects - A generalised k/d/x etc. line parser,
2097     * "ALINE [time] user@host|string [ON] target :reason"
2098     * will parse returning a parsed user, host if
2099     * h_p pointer is non NULL, string otherwise.
2100     * if tkline_time pointer is non NULL a tk line will be set
2101     * to non zero if found.
2102     * if tkline_time pointer is NULL and tk line is found,
2103     * error is reported.
2104     * if target_server is NULL and an "ON" is found error
2105     * is reported.
2106     * if reason pointer is NULL ignore pointer,
2107 db 936 * this allows use of parse_a_line in unkline etc.
2108 adx 30 *
2109     * - Dianora
2110     */
2111     int
2112     parse_aline(const char *cmd, struct Client *source_p,
2113     int parc, char **parv,
2114     int parse_flags, char **up_p, char **h_p, time_t *tkline_time,
2115     char **target_server, char **reason)
2116     {
2117     int found_tkline_time=0;
2118     static char def_reason[] = "No Reason";
2119     static char user[USERLEN*4+1];
2120     static char host[HOSTLEN*4+1];
2121    
2122     parv++;
2123     parc--;
2124    
2125     found_tkline_time = valid_tkline(*parv, TK_MINUTES);
2126    
2127     if (found_tkline_time != 0)
2128     {
2129     parv++;
2130     parc--;
2131    
2132     if (tkline_time != NULL)
2133     *tkline_time = found_tkline_time;
2134     else
2135     {
2136     sendto_one(source_p, ":%s NOTICE %s :temp_line not supported by %s",
2137     me.name, source_p->name, cmd);
2138     return -1;
2139     }
2140     }
2141    
2142     if (parc == 0)
2143     {
2144     sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
2145     me.name, source_p->name, cmd);
2146     return -1;
2147     }
2148    
2149     if (h_p == NULL)
2150     *up_p = *parv;
2151     else
2152     {
2153     if (find_user_host(source_p, *parv, user, host, parse_flags) == 0)
2154     return -1;
2155    
2156     *up_p = user;
2157     *h_p = host;
2158     }
2159    
2160     parc--;
2161     parv++;
2162    
2163     if (parc != 0)
2164     {
2165     if (irccmp(*parv, "ON") == 0)
2166     {
2167     parc--;
2168     parv++;
2169    
2170     if (target_server == NULL)
2171     {
2172     sendto_one(source_p, ":%s NOTICE %s :ON server not supported by %s",
2173     me.name, source_p->name, cmd);
2174     return -1;
2175     }
2176    
2177 michael 1219 if (!HasOFlag(source_p, OPER_FLAG_REMOTEBAN))
2178 adx 30 {
2179     sendto_one(source_p, form_str(ERR_NOPRIVS),
2180     me.name, source_p->name, "remoteban");
2181     return -1;
2182     }
2183    
2184     if (parc == 0 || EmptyString(*parv))
2185     {
2186     sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
2187     me.name, source_p->name, cmd);
2188     return -1;
2189     }
2190    
2191     *target_server = *parv;
2192     parc--;
2193     parv++;
2194     }
2195     else
2196     {
2197     /* Make sure target_server *is* NULL if no ON server found
2198     * caller probably NULL'd it first, but no harm to do it again -db
2199     */
2200     if (target_server != NULL)
2201     *target_server = NULL;
2202     }
2203     }
2204    
2205     if (h_p != NULL)
2206     {
2207     if (strchr(user, '!') != NULL)
2208     {
2209     sendto_one(source_p, ":%s NOTICE %s :Invalid character '!' in kline",
2210     me.name, source_p->name);
2211     return -1;
2212     }
2213    
2214 michael 1243 if ((parse_flags & AWILD) && !valid_wild_card(source_p, 1, 2, *up_p, *h_p))
2215 adx 30 return -1;
2216     }
2217     else
2218 michael 1243 if ((parse_flags & AWILD) && !valid_wild_card(source_p, 1, 1, *up_p))
2219 adx 30 return -1;
2220    
2221     if (reason != NULL)
2222     {
2223 michael 867 if (parc != 0 && !EmptyString(*parv))
2224 adx 30 {
2225     *reason = *parv;
2226 michael 1243 if (!valid_comment(source_p, *reason, 1))
2227 adx 30 return -1;
2228     }
2229     else
2230     *reason = def_reason;
2231     }
2232    
2233     return 1;
2234     }
2235    
2236     /* find_user_host()
2237     *
2238     * inputs - pointer to client placing kline
2239     * - pointer to user_host_or_nick
2240     * - pointer to user buffer
2241     * - pointer to host buffer
2242     * output - 0 if not ok to kline, 1 to kline i.e. if valid user host
2243     * side effects -
2244     */
2245     static int
2246     find_user_host(struct Client *source_p, char *user_host_or_nick,
2247     char *luser, char *lhost, unsigned int flags)
2248     {
2249     struct Client *target_p = NULL;
2250     char *hostp = NULL;
2251    
2252     if (lhost == NULL)
2253     {
2254     strlcpy(luser, user_host_or_nick, USERLEN*4 + 1);
2255     return 1;
2256     }
2257    
2258     if ((hostp = strchr(user_host_or_nick, '@')) || *user_host_or_nick == '*')
2259     {
2260     /* Explicit user@host mask given */
2261    
2262 michael 593 if (hostp != NULL) /* I'm a little user@host */
2263 adx 30 {
2264     *(hostp++) = '\0'; /* short and squat */
2265     if (*user_host_or_nick)
2266     strlcpy(luser, user_host_or_nick, USERLEN*4 + 1); /* here is my user */
2267     else
2268     strcpy(luser, "*");
2269     if (*hostp)
2270     strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */
2271     else
2272     strcpy(lhost, "*");
2273     }
2274     else
2275     {
2276     luser[0] = '*'; /* no @ found, assume its *@somehost */
2277     luser[1] = '\0';
2278     strlcpy(lhost, user_host_or_nick, HOSTLEN*4 + 1);
2279     }
2280    
2281     return 1;
2282     }
2283 michael 1518 else
2284 adx 30 {
2285     /* Try to find user@host mask from nick */
2286     /* Okay to use source_p as the first param, because source_p == client_p */
2287     if ((target_p =
2288     find_chasing(source_p, source_p, user_host_or_nick, NULL)) == NULL)
2289     return 0;
2290    
2291     if (IsExemptKline(target_p))
2292     {
2293     if (!IsServer(source_p))
2294     sendto_one(source_p,
2295     ":%s NOTICE %s :%s is E-lined",
2296     me.name, source_p->name, target_p->name);
2297     return 0;
2298     }
2299    
2300     /*
2301     * turn the "user" bit into "*user", blow away '~'
2302     * if found in original user name (non-idented)
2303     */
2304     strlcpy(luser, target_p->username, USERLEN*4 + 1);
2305    
2306     if (target_p->username[0] == '~')
2307     luser[0] = '*';
2308    
2309     if (target_p->sockhost[0] == '\0' ||
2310     (target_p->sockhost[0] == '0' && target_p->sockhost[1] == '\0'))
2311     strlcpy(lhost, target_p->host, HOSTLEN*4 + 1);
2312     else
2313     strlcpy(lhost, target_p->sockhost, HOSTLEN*4 + 1);
2314     return 1;
2315     }
2316    
2317     return 0;
2318     }
2319    
2320     /* valid_comment()
2321     *
2322     * inputs - pointer to client
2323     * - pointer to comment
2324     * output - 0 if no valid comment,
2325     * - 1 if valid
2326     * side effects - truncates reason where necessary
2327     */
2328     int
2329     valid_comment(struct Client *source_p, char *comment, int warn)
2330     {
2331     if (strlen(comment) > REASONLEN)
2332     comment[REASONLEN-1] = '\0';
2333    
2334     return 1;
2335     }
2336    
2337     /* match_conf_password()
2338     *
2339     * inputs - pointer to given password
2340     * - pointer to Conf
2341     * output - 1 or 0 if match
2342     * side effects - none
2343     */
2344     int
2345 michael 1632 match_conf_password(const char *password, const struct MaskItem *conf)
2346 adx 30 {
2347     const char *encr = NULL;
2348    
2349 michael 1632 if (EmptyString(password) || EmptyString(conf->passwd))
2350 adx 30 return 0;
2351    
2352 michael 1632 if (conf->flags & CONF_FLAGS_ENCRYPTED)
2353     encr = crypt(password, conf->passwd);
2354 adx 30 else
2355     encr = password;
2356    
2357 michael 1632 return !strcmp(encr, conf->passwd);
2358 adx 30 }
2359    
2360     /*
2361     * cluster_a_line
2362     *
2363     * inputs - client sending the cluster
2364     * - command name "KLINE" "XLINE" etc.
2365     * - capab -- CAP_KLN etc. from s_serv.h
2366 michael 1309 * - cluster type -- CLUSTER_KLINE etc. from conf.h
2367 adx 30 * - pattern and args to send along
2368     * output - none
2369     * side effects - Take source_p send the pattern with args given
2370     * along to all servers that match capab and cluster type
2371     */
2372     void
2373     cluster_a_line(struct Client *source_p, const char *command,
2374 michael 593 int capab, int cluster_type, const char *pattern, ...)
2375 adx 30 {
2376     va_list args;
2377     char buffer[IRCD_BUFSIZE];
2378 michael 593 const dlink_node *ptr = NULL;
2379 adx 30
2380     va_start(args, pattern);
2381     vsnprintf(buffer, sizeof(buffer), pattern, args);
2382     va_end(args);
2383    
2384     DLINK_FOREACH(ptr, cluster_items.head)
2385     {
2386 michael 1632 const struct MaskItem *conf = ptr->data;
2387 adx 30
2388     if (conf->flags & cluster_type)
2389     sendto_match_servs(source_p, conf->name, CAP_CLUSTER|capab,
2390     "%s %s %s", command, conf->name, buffer);
2391     }
2392     }
2393    
2394     /*
2395     * split_nuh
2396     *
2397     * inputs - pointer to original mask (modified in place)
2398     * - pointer to pointer where nick should go
2399     * - pointer to pointer where user should go
2400     * - pointer to pointer where host should go
2401     * output - NONE
2402     * side effects - mask is modified in place
2403     * If nick pointer is NULL, ignore writing to it
2404     * this allows us to use this function elsewhere.
2405     *
2406     * mask nick user host
2407     * ---------------------- ------- ------- ------
2408     * Dianora!db@db.net Dianora db db.net
2409     * Dianora Dianora * *
2410     * db.net * * db.net
2411     * OR if nick pointer is NULL
2412     * Dianora - * Dianora
2413     * Dianora! Dianora * *
2414     * Dianora!@ Dianora * *
2415     * Dianora!db Dianora db *
2416     * Dianora!@db.net Dianora * db.net
2417     * db@db.net * db db.net
2418     * !@ * * *
2419     * @ * * *
2420     * ! * * *
2421     */
2422     void
2423 michael 593 split_nuh(struct split_nuh_item *const iptr)
2424 adx 30 {
2425     char *p = NULL, *q = NULL;
2426    
2427 michael 593 if (iptr->nickptr)
2428     strlcpy(iptr->nickptr, "*", iptr->nicksize);
2429     if (iptr->userptr)
2430     strlcpy(iptr->userptr, "*", iptr->usersize);
2431     if (iptr->hostptr)
2432     strlcpy(iptr->hostptr, "*", iptr->hostsize);
2433    
2434     if ((p = strchr(iptr->nuhmask, '!')))
2435 adx 30 {
2436     *p = '\0';
2437    
2438 michael 593 if (iptr->nickptr && *iptr->nuhmask != '\0')
2439     strlcpy(iptr->nickptr, iptr->nuhmask, iptr->nicksize);
2440 adx 30
2441 michael 593 if ((q = strchr(++p, '@'))) {
2442     *q++ = '\0';
2443    
2444 adx 30 if (*p != '\0')
2445 michael 593 strlcpy(iptr->userptr, p, iptr->usersize);
2446 adx 30
2447 michael 593 if (*q != '\0')
2448     strlcpy(iptr->hostptr, q, iptr->hostsize);
2449 adx 30 }
2450     else
2451     {
2452     if (*p != '\0')
2453 michael 593 strlcpy(iptr->userptr, p, iptr->usersize);
2454