2 * IRC - Internet Relay Chat, ircd/s_conf.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 1, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * @brief ircd configuration file driver
31 #include "ircd_features.h"
36 #include "ircd_alloc.h"
37 #include "ircd_auth.h"
38 #include "ircd_chattr.h"
40 #include "ircd_reply.h"
41 #include "ircd_snprintf.h"
42 #include "ircd_string.h"
59 /* #include <assert.h> -- Now using assert in ircd_log.h */
69 /** Global list of all ConfItem structures. */
70 struct ConfItem *GlobalConfList;
71 /** Count of items in #GlobalConfList. */
73 /** Global list of service mappings. */
74 struct s_map *GlobalServiceMapList;
75 /** Global list of channel quarantines. */
76 struct qline *GlobalQuarantineList;
78 /** Current line number in scanner input. */
81 /** Configuration information for #me. */
82 struct LocalConf localConf;
83 /** Global list of connection rules. */
84 struct CRuleConf* cruleConfList;
85 /** Global list of K-lines. */
86 struct DenyConf* denyConfList;
88 /** Tell a user that they are banned, dumping the message from a file.
89 * @param sptr Client being rejected
90 * @param filename Send this file's contents to \a sptr
92 static void killcomment(struct Client* sptr, const char* filename)
99 if (NULL == (file = fbopen(filename, "r"))) {
100 send_reply(sptr, ERR_NOMOTD);
101 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
102 ":Connection from your host is refused on this server.");
106 tm = localtime((time_t*) &sb.st_mtime); /* NetBSD needs cast */
107 while (fbgets(line, sizeof(line) - 1, file)) {
108 char* end = line + strlen(line);
111 if ('\n' == *end || '\r' == *end)
116 send_reply(sptr, RPL_MOTD, line);
118 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
119 ":Connection from your host is refused on this server.");
123 /** Allocate a new struct ConfItem and link it to #GlobalConfList.
124 * @return Newly allocated structure.
126 struct ConfItem* make_conf(int type)
128 struct ConfItem* aconf;
130 aconf = (struct ConfItem*) MyMalloc(sizeof(struct ConfItem));
133 memset(aconf, 0, sizeof(struct ConfItem));
134 aconf->status = type;
135 aconf->next = GlobalConfList;
136 GlobalConfList = aconf;
140 /** Free a struct ConfItem and any resources it owns.
141 * @param aconf Item to free.
143 void free_conf(struct ConfItem *aconf)
145 Debug((DEBUG_DEBUG, "free_conf: %s %s %d",
146 aconf->host ? aconf->host : "*",
147 aconf->name ? aconf->name : "*",
148 aconf->address.port));
149 if (aconf->dns_pending)
150 delete_resolver_queries(aconf);
151 MyFree(aconf->username);
153 MyFree(aconf->origin_name);
155 memset(aconf->passwd, 0, strlen(aconf->passwd));
156 MyFree(aconf->passwd);
158 MyFree(aconf->hub_limit);
163 /** Disassociate configuration from the client.
164 * @param cptr Client to operate on.
165 * @param aconf ConfItem to detach.
167 static void detach_conf(struct Client* cptr, struct ConfItem* aconf)
174 assert(0 < aconf->clients);
176 lp = &(cli_confs(cptr));
179 if ((*lp)->value.aconf == aconf) {
180 if (aconf->conn_class && (aconf->status & CONF_CLIENT_MASK) && ConfLinks(aconf) > 0)
183 assert(0 < aconf->clients);
184 if (0 == --aconf->clients && IsIllegal(aconf))
195 /** Parse a user\@host mask into username and host or IP parts.
196 * If \a host contains no username part, set \a aconf->username to
197 * NULL. If the host part of \a host looks like an IP mask, set \a
198 * aconf->addrbits and \a aconf->address to match. Otherwise, set
199 * \a aconf->host, and set \a aconf->addrbits to -1.
200 * @param[in,out] aconf Configuration item to set.
201 * @param[in] host user\@host mask to parse.
203 void conf_parse_userhost(struct ConfItem *aconf, char *host)
206 unsigned char addrbits;
208 MyFree(aconf->username);
210 host_part = strchr(host, '@');
213 DupString(aconf->username, host);
216 aconf->username = NULL;
219 DupString(aconf->host, host_part);
220 if (ipmask_parse(aconf->host, &aconf->address.addr, &addrbits))
221 aconf->addrbits = addrbits;
223 aconf->addrbits = -1;
227 /** Copies a completed DNS query into its ConfItem.
228 * @param vptr Pointer to struct ConfItem for the block.
229 * @param hp DNS reply, or NULL if the lookup failed.
231 static void conf_dns_callback(void* vptr, const struct irc_in_addr *addr, const char *h_name)
233 struct ConfItem* aconf = (struct ConfItem*) vptr;
235 aconf->dns_pending = 0;
237 memcpy(&aconf->address.addr, addr, sizeof(aconf->address.addr));
240 /** Start a nameserver lookup of the conf host. If the conf entry is
241 * currently doing a lookup, do nothing.
242 * @param aconf ConfItem for which to start a request.
244 static void conf_dns_lookup(struct ConfItem* aconf)
246 if (!aconf->dns_pending) {
247 char buf[HOSTLEN + 1];
249 host_from_uh(buf, aconf->host, HOSTLEN);
250 gethost_byname(buf, conf_dns_callback, aconf);
251 aconf->dns_pending = 1;
256 /** Start lookups of all addresses in the conf line. The origin must
257 * be a numeric IP address. If the remote host field is not an IP
258 * address, start a DNS lookup for it.
259 * @param aconf Connection to do lookups for.
262 lookup_confhost(struct ConfItem *aconf)
264 if (EmptyString(aconf->host) || EmptyString(aconf->name)) {
265 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
266 aconf->host, aconf->name));
269 if (aconf->origin_name
270 && !ircd_aton(&aconf->origin.addr, aconf->origin_name)) {
271 Debug((DEBUG_ERROR, "Origin name error: (%s) (%s)",
272 aconf->origin_name, aconf->name));
275 * Do name lookup now on hostnames given and store the
276 * ip numbers in conf structure.
278 if (IsIP6Char(*aconf->host)) {
279 if (!ircd_aton(&aconf->address.addr, aconf->host)) {
280 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
281 aconf->host, aconf->name));
285 conf_dns_lookup(aconf);
288 /** Find a server by name or hostname.
289 * @param name Server name to find.
290 * @return Pointer to the corresponding ConfItem, or NULL if none exists.
292 struct ConfItem* conf_find_server(const char* name)
294 struct ConfItem* conf;
297 for (conf = GlobalConfList; conf; conf = conf->next) {
298 if (CONF_SERVER == conf->status) {
300 * Check first servernames, then try hostnames.
301 * XXX - match returns 0 if there _is_ a match... guess they
302 * haven't decided what true is yet
304 if (0 == match(name, conf->name))
311 /** Evaluate connection rules.
312 * @param name Name of server to check
313 * @param mask Filter for CRule types (only consider if type & \a mask != 0).
314 * @return Name of rule that forbids the connection; NULL if no prohibitions.
316 const char* conf_eval_crule(const char* name, int mask)
318 struct CRuleConf* p = cruleConfList;
321 for ( ; p; p = p->next) {
322 if (0 != (p->type & mask) && 0 == match(p->hostmask, name)) {
323 if (crule_eval(p->node))
330 /** Remove all conf entries from the client except those which match
331 * the status field mask.
332 * @param cptr Client to operate on.
333 * @param mask ConfItem types to keep.
335 void det_confs_butmask(struct Client* cptr, int mask)
341 for (link = cli_confs(cptr); link; link = next) {
343 if ((link->value.aconf->status & mask) == 0)
344 detach_conf(cptr, link->value.aconf);
348 /** Check client limits and attach Client block.
349 * If there are more connections from the IP than \a aconf->maximum
350 * allows, return ACR_TOO_MANY_FROM_IP. Otherwise, attach \a aconf to
352 * @param cptr Client getting \a aconf.
353 * @param aconf Configuration item to attach.
354 * @return Authorization check result.
356 static enum AuthorizationCheckResult
357 check_limit_and_attach(struct Client* cptr, struct ConfItem* aconf)
359 if (IPcheck_nr(cptr) > aconf->maximum)
360 return ACR_TOO_MANY_FROM_IP;
361 return attach_conf(cptr, aconf);
364 /** Find the first (best) Client block to attach.
365 * @param cptr Client for whom to check rules.
366 * @return Authorization check result.
368 enum AuthorizationCheckResult attach_iline(struct Client* cptr)
370 struct ConfItem* aconf;
374 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
375 if (aconf->status != CONF_CLIENT)
377 /* If you change any of this logic, please make corresponding
378 * changes in conf_debug_iline() below.
380 if (aconf->address.port && aconf->address.port != cli_listener(cptr)->addr.port)
382 if (aconf->username) {
383 SetFlag(cptr, FLAG_DOID);
384 if (match(aconf->username, cli_username(cptr)))
387 if (aconf->host && match(aconf->host, cli_sockhost(cptr)))
389 if ((aconf->addrbits >= 0)
390 && !ipmask_check(&cli_ip(cptr), &aconf->address.addr, aconf->addrbits))
392 return check_limit_and_attach(cptr, aconf);
394 return ACR_NO_AUTHORIZATION;
397 /** Interpret \a client as a client specifier and show which Client
398 * block(s) match that client.
400 * The client specifier may contain an IP address, hostname, listener
401 * port, or a combination of those separated by commas. IP addresses
402 * and hostnamese may be preceded by "username@"; the last given
403 * username will be used for the match.
405 * @param[in] client Client specifier.
406 * @return Matching Client block structure.
408 struct ConfItem *conf_debug_iline(const char *client)
410 struct irc_in_addr address;
411 struct ConfItem *aconf;
412 struct DenyConf *deny;
414 unsigned short listener;
415 char username[USERLEN+1], hostname[HOSTLEN+1], realname[REALLEN+1];
417 /* Initialize variables. */
419 memset(&address, 0, sizeof(address));
420 memset(&username, 0, sizeof(username));
421 memset(&hostname, 0, sizeof(hostname));
422 memset(&realname, 0, sizeof(realname));
424 /* Parse client specifier. */
426 struct irc_in_addr tmpaddr;
429 /* Try to parse as listener port number first. */
430 tmp = strtol(client, &sep, 10);
431 if (tmp && (*sep == '\0' || *sep == ',')) {
433 client = sep + (*sep != '\0');
437 /* Maybe username@ before an IP address or hostname? */
438 tmp = strcspn(client, ",@");
439 if (client[tmp] == '@') {
442 ircd_strncpy(username, client, tmp);
443 /* and fall through */
447 /* Looks like an IP address? */
448 tmp = ircd_aton(&tmpaddr, client);
449 if (tmp && (client[tmp] == '\0' || client[tmp] == ',')) {
450 memcpy(&address, &tmpaddr, sizeof(address));
451 client += tmp + (client[tmp] != '\0');
456 if (client[0] == '$' && client[1] == 'R') {
458 for (tmp = 0; *client != '\0' && *client != ',' && tmp < REALLEN; ++client, ++tmp) {
460 realname[tmp] = *++client;
462 realname[tmp] = *client;
467 /* Else must be a hostname. */
468 tmp = strcspn(client, ",");
471 ircd_strncpy(hostname, client, tmp);
472 client += tmp + (client[tmp] != '\0');
475 /* Walk configuration to find matching Client block. */
476 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
477 if (aconf->status != CONF_CLIENT)
479 if (aconf->address.port && aconf->address.port != listener) {
480 fprintf(stdout, "Listener port mismatch: %u != %u\n", aconf->address.port, listener);
483 if (aconf->username && match(aconf->username, username)) {
484 fprintf(stdout, "Username mismatch: %s != %s\n", aconf->username, username);
487 if (aconf->host && match(aconf->host, hostname)) {
488 fprintf(stdout, "Hostname mismatch: %s != %s\n", aconf->host, hostname);
491 if ((aconf->addrbits >= 0)
492 && !ipmask_check(&address, &aconf->address.addr, aconf->addrbits)) {
493 fprintf(stdout, "IP address mismatch: %s != %s\n", aconf->name, ircd_ntoa(&address));
496 fprintf(stdout, "Match! username=%s host=%s ip=%s class=%s maxlinks=%u password=%s\n",
497 (aconf->username ? aconf->username : "(null)"),
498 (aconf->host ? aconf->host : "(null)"),
499 (aconf->name ? aconf->name : "(null)"),
500 ConfClass(aconf), aconf->maximum, aconf->passwd);
504 /* If no authorization, say so and exit. */
507 fprintf(stdout, "No authorization found.\n");
511 /* Look for a Kill block with the user's name on it. */
512 for (deny = denyConfList; deny; deny = deny->next) {
513 if (deny->usermask && match(deny->usermask, username))
515 if (deny->realmask && match(deny->realmask, realname))
517 if (deny->bits > 0) {
518 if (!ipmask_check(&address, &deny->address, deny->bits))
520 } else if (deny->hostmask && match(deny->hostmask, hostname))
523 /* Looks like a match; report it. */
524 fprintf(stdout, "Denied! usermask=%s realmask=\"%s\" hostmask=%s (bits=%u)\n",
525 deny->usermask ? deny->usermask : "(null)",
526 deny->realmask ? deny->realmask : "(null)",
527 deny->hostmask ? deny->hostmask : "(null)",
534 /** Check whether a particular ConfItem is already attached to a
536 * @param aconf ConfItem to search for
537 * @param cptr Client to check
538 * @return Non-zero if \a aconf is attached to \a cptr, zero if not.
540 static int is_attached(struct ConfItem *aconf, struct Client *cptr)
544 for (lp = cli_confs(cptr); lp; lp = lp->next) {
545 if (lp->value.aconf == aconf)
551 /** Associate a specific configuration entry to a *local* client (this
552 * is the one which used in accepting the connection). Note, that this
553 * automatically changes the attachment if there was an old one...
554 * @param cptr Client to attach \a aconf to
555 * @param aconf ConfItem to attach
556 * @return Authorization check result.
558 enum AuthorizationCheckResult attach_conf(struct Client *cptr, struct ConfItem *aconf)
562 if (is_attached(aconf, cptr))
563 return ACR_ALREADY_AUTHORIZED;
564 if (IsIllegal(aconf))
565 return ACR_NO_AUTHORIZATION;
566 if ((aconf->status & (CONF_OPERATOR | CONF_CLIENT)) &&
567 ConfLinks(aconf) >= ConfMaxLinks(aconf) && ConfMaxLinks(aconf) > 0)
568 return ACR_TOO_MANY_IN_CLASS; /* Use this for printing error message */
570 lp->next = cli_confs(cptr);
571 lp->value.aconf = aconf;
572 cli_confs(cptr) = lp;
574 if (aconf->status & CONF_CLIENT_MASK)
579 /** Return our LocalConf configuration structure.
580 * @return A pointer to #localConf.
582 const struct LocalConf* conf_get_local(void)
587 /** Attach ConfItems to a client if the name passed matches that for
588 * the ConfItems or is an exact match for them.
589 * @param cptr Client getting the ConfItem attachments.
590 * @param name Filter to match ConfItem::name.
591 * @param statmask Filter to limit ConfItem::status.
592 * @return First ConfItem attached to \a cptr.
594 struct ConfItem* attach_confs_byname(struct Client* cptr, const char* name,
597 struct ConfItem* tmp;
598 struct ConfItem* first = NULL;
602 if (HOSTLEN < strlen(name))
605 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
606 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
607 assert(0 != tmp->name);
608 if (0 == match(tmp->name, name) || 0 == ircd_strcmp(tmp->name, name)) {
609 if (ACR_OK == attach_conf(cptr, tmp) && !first)
617 /** Attach ConfItems to a client if the host passed matches that for
618 * the ConfItems or is an exact match for them.
619 * @param cptr Client getting the ConfItem attachments.
620 * @param host Filter to match ConfItem::host.
621 * @param statmask Filter to limit ConfItem::status.
622 * @return First ConfItem attached to \a cptr.
624 struct ConfItem* attach_confs_byhost(struct Client* cptr, const char* host,
627 struct ConfItem* tmp;
628 struct ConfItem* first = 0;
631 if (HOSTLEN < strlen(host))
634 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
635 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
636 assert(0 != tmp->host);
637 if (0 == match(tmp->host, host) || 0 == ircd_strcmp(tmp->host, host)) {
638 if (ACR_OK == attach_conf(cptr, tmp) && !first)
646 /** Find a ConfItem that has the same name and user+host fields as
647 * specified. Requires an exact match for \a name.
648 * @param name Name to match
649 * @param cptr Client to match against
650 * @param statmask Filter for ConfItem::status
651 * @return First found matching ConfItem.
653 struct ConfItem* find_conf_exact(const char* name, struct Client *cptr, int statmask)
655 struct ConfItem *tmp;
657 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
658 if (!(tmp->status & statmask) || !tmp->name || !tmp->host ||
659 0 != ircd_strcmp(tmp->name, name))
662 && (EmptyString(cli_username(cptr))
663 || match(tmp->username, cli_username(cptr))))
665 if (tmp->addrbits < 0)
667 if (match(tmp->host, cli_sockhost(cptr)))
670 else if (!ipmask_check(&cli_ip(cptr), &tmp->address.addr, tmp->addrbits))
672 if ((tmp->status & CONF_OPERATOR)
673 && (tmp->clients >= MaxLinks(tmp->conn_class)))
680 /** Find a ConfItem from a list that has a name that matches \a name.
681 * @param lp List to search in.
682 * @param name Filter for ConfItem::name field; matches either exactly
684 * @param statmask Filter for ConfItem::status.
685 * @return First matching ConfItem from \a lp.
687 struct ConfItem* find_conf_byname(struct SLink* lp, const char* name,
690 struct ConfItem* tmp;
693 if (HOSTLEN < strlen(name))
696 for (; lp; lp = lp->next) {
697 tmp = lp->value.aconf;
698 if (0 != (tmp->status & statmask)) {
699 assert(0 != tmp->name);
700 if (0 == ircd_strcmp(tmp->name, name) || 0 == match(tmp->name, name))
707 /** Find a ConfItem from a list that has a host that matches \a host.
708 * @param lp List to search in.
709 * @param host Filter for ConfItem::host field; matches as a glob.
710 * @param statmask Filter for ConfItem::status.
711 * @return First matching ConfItem from \a lp.
713 struct ConfItem* find_conf_byhost(struct SLink* lp, const char* host,
716 struct ConfItem* tmp = NULL;
719 if (HOSTLEN < strlen(host))
722 for (; lp; lp = lp->next) {
723 tmp = lp->value.aconf;
724 if (0 != (tmp->status & statmask)) {
725 assert(0 != tmp->host);
726 if (0 == match(tmp->host, host))
733 /** Find a ConfItem from a list that has an address equal to \a ip.
734 * @param lp List to search in.
735 * @param ip Filter for ConfItem::address field; matches exactly.
736 * @param statmask Filter for ConfItem::status.
737 * @return First matching ConfItem from \a lp.
739 struct ConfItem* find_conf_byip(struct SLink* lp, const struct irc_in_addr* ip,
742 struct ConfItem* tmp;
744 for (; lp; lp = lp->next) {
745 tmp = lp->value.aconf;
746 if (0 != (tmp->status & statmask)
747 && !irc_in_addr_cmp(&tmp->address.addr, ip))
753 /** Free all CRules from #cruleConfList. */
754 void conf_erase_crule_list(void)
756 struct CRuleConf* next;
757 struct CRuleConf* p = cruleConfList;
759 for ( ; p; p = next) {
761 crule_free(&p->node);
769 /** Return #cruleConfList.
770 * @return #cruleConfList
772 const struct CRuleConf* conf_get_crule_list(void)
774 return cruleConfList;
777 /** Free all deny rules from #denyConfList. */
778 void conf_erase_deny_list(void)
780 struct DenyConf* next;
781 struct DenyConf* p = denyConfList;
782 for ( ; p; p = next) {
793 /** Return #denyConfList.
794 * @return #denyConfList
796 const struct DenyConf* conf_get_deny_list(void)
801 /** Find any existing quarantine for the named channel.
802 * @param chname Channel name to search for.
803 * @return Reason for channel's quarantine, or NULL if none exists.
806 find_quarantine(const char *chname)
810 for (qline = GlobalQuarantineList; qline; qline = qline->next)
811 if (!ircd_strcmp(qline->chname, chname))
812 return qline->reason;
816 /** Free all qline structs from #GlobalQuarantineList. */
817 void clear_quarantines(void)
820 while ((qline = GlobalQuarantineList))
822 GlobalQuarantineList = qline->next;
823 MyFree(qline->reason);
824 MyFree(qline->chname);
829 /** When non-zero, indicates that a configuration error has been seen in this pass. */
830 static int conf_error;
831 /** When non-zero, indicates that the configuration file was loaded at least once. */
832 static int conf_already_read;
834 extern void yyparse(void);
835 extern void init_lexer(void);
837 /** Read configuration file.
838 * @return Zero on failure, non-zero on success. */
839 int read_configuration_file(void)
842 feature_unmark(); /* unmark all features for resetting later */
843 /* Now just open an fd. The buffering isn't really needed... */
848 feature_mark(); /* reset unmarked features */
849 conf_already_read = 1;
853 /** Report an error message about the configuration file.
854 * @param msg The error to report.
857 yyerror(const char *msg)
859 sendto_opmask_butone(0, SNO_ALL, "Config file parse error line %d: %s",
861 log_write(LS_CONFIG, L_ERROR, 0, "Config file parse error line %d: %s",
863 if (!conf_already_read)
864 fprintf(stderr, "Config file parse error line %d: %s\n", lineno, msg);
868 /** Attach CONF_UWORLD items to a server and everything attached to it. */
870 attach_conf_uworld(struct Client *cptr)
874 attach_confs_byhost(cptr, cli_name(cptr), CONF_UWORLD);
875 for (lp = cli_serv(cptr)->down; lp; lp = lp->next)
876 attach_conf_uworld(lp->value.cptr);
879 /** Free all memory associated with service mapping \a smap.
880 * @param smap[in] The mapping to free.
882 void free_mapping(struct s_map *smap)
884 struct nick_host *nh, *next;
885 for (nh = smap->services; nh; nh = next)
891 MyFree(smap->command);
892 MyFree(smap->prepend);
896 /** Unregister and free all current service mappings. */
897 static void close_mappings(void)
899 struct s_map *map, *next;
901 for (map = GlobalServiceMapList; map; map = next) {
903 unregister_mapping(map);
908 /** Reload the configuration file.
909 * @param cptr Client that requested rehash (if a signal, &me).
910 * @param sig Type of rehash (0 = oper-requested, 1 = signal, 2 =
911 * oper-requested but do not restart resolver)
912 * @return CPTR_KILLED if any client was K/G-lined because of the
913 * rehash; otherwise 0.
915 int rehash(struct Client *cptr, int sig)
917 struct ConfItem** tmp = &GlobalConfList;
918 struct ConfItem* tmp2;
919 struct Client* acptr;
925 sendto_opmask_butone(0, SNO_OLDSNO,
926 "Got signal SIGHUP, reloading ircd conf. file");
928 while ((tmp2 = *tmp)) {
931 * Configuration entry is still in use by some
932 * local clients, cannot delete it--mark it so
933 * that it will be deleted when the last client
936 if (CONF_CLIENT == (tmp2->status & CONF_CLIENT))
942 tmp2->status |= CONF_ILLEGAL;
949 conf_erase_crule_list();
950 conf_erase_deny_list();
954 * delete the juped nicks list
964 mark_listeners_closing();
965 iauth_mark_closing();
968 read_configuration_file();
970 log_reopen(); /* reopen log files */
972 iauth_close_unused();
974 class_delete_marked(); /* unless it fails */
977 * Flush out deleted I and P lines although still in use.
979 for (tmp = &GlobalConfList; (tmp2 = *tmp);) {
980 if (CONF_ILLEGAL == (tmp2->status & CONF_ILLEGAL)) {
990 for (i = 0; i <= HighestFd; i++) {
991 if ((acptr = LocalClientArray[i])) {
992 assert(!IsMe(acptr));
994 det_confs_butmask(acptr, ~(CONF_UWORLD | CONF_ILLEGAL));
995 /* Because admin's are getting so uppity about people managing to
996 * get past K/G's etc, we'll "fix" the bug by actually explaining
999 if ((found_g = find_kill(acptr))) {
1000 sendto_opmask_butone(0, found_g == -2 ? SNO_GLINE : SNO_OPERKILL,
1001 found_g == -2 ? "G-line active for %s%s" :
1002 "K-line active for %s%s",
1003 IsUnknown(acptr) ? "Unregistered Client ":"",
1004 get_client_name(acptr, SHOW_IP));
1005 if (exit_client(cptr, acptr, &me, found_g == -2 ? "G-lined" :
1006 "K-lined") == CPTR_KILLED)
1012 attach_conf_uworld(&me);
1017 /** Read configuration file for the very first time.
1018 * @return Non-zero on success, zero on failure.
1023 if (read_configuration_file()) {
1025 * make sure we're sane to start if the config
1026 * file read didn't get everything we need.
1027 * XXX - should any of these abort the server?
1028 * TODO: add warning messages
1030 if (0 == localConf.name || 0 == localConf.numeric)
1035 if (0 == localConf.location1)
1036 DupString(localConf.location1, "");
1037 if (0 == localConf.location2)
1038 DupString(localConf.location2, "");
1039 if (0 == localConf.contact)
1040 DupString(localConf.contact, "");
1047 /** Searches for a K/G-line for a client. If one is found, notify the
1048 * user and disconnect them.
1049 * @param cptr Client to search for.
1050 * @return 0 if client is accepted; -1 if client was locally denied
1051 * (K-line); -2 if client was globally denied (G-line).
1053 int find_kill(struct Client *cptr)
1057 const char* realname;
1058 struct DenyConf* deny;
1059 struct Gline* agline = NULL;
1063 if (!cli_user(cptr))
1066 host = cli_sockhost(cptr);
1067 name = cli_user(cptr)->username;
1068 realname = cli_info(cptr);
1070 assert(strlen(host) <= HOSTLEN);
1071 assert((name ? strlen(name) : 0) <= HOSTLEN);
1072 assert((realname ? strlen(realname) : 0) <= REALLEN);
1074 /* 2000-07-14: Rewrote this loop for massive speed increases.
1077 for (deny = denyConfList; deny; deny = deny->next) {
1078 if (deny->usermask && match(deny->usermask, name))
1080 if (deny->realmask && match(deny->realmask, realname))
1082 if (deny->bits > 0) {
1083 if (!ipmask_check(&cli_ip(cptr), &deny->address, deny->bits))
1085 } else if (deny->hostmask && match(deny->hostmask, host))
1088 if (EmptyString(deny->message))
1089 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
1090 ":Connection from your host is refused on this server.");
1092 if (deny->flags & DENY_FLAGS_FILE)
1093 killcomment(cptr, deny->message);
1095 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", deny->message);
1100 if ((agline = gline_lookup(cptr, 0))) {
1102 * find active glines
1103 * added a check against the user's IP address to find_gline() -Kev
1105 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", GlineReason(agline));
1112 /** Attempt to attach Client blocks to \a cptr. If attach_iline()
1113 * fails for the client, emit a debugging message.
1114 * @param cptr Client to check for access.
1115 * @return Access check result.
1117 enum AuthorizationCheckResult conf_check_client(struct Client *cptr)
1119 enum AuthorizationCheckResult acr = ACR_OK;
1121 if ((acr = attach_iline(cptr))) {
1122 Debug((DEBUG_DNS, "ch_cl: access denied: %s[%s]",
1123 cli_name(cptr), cli_sockhost(cptr)));
1129 /** Check access for a server given its name (passed in cptr struct).
1130 * Must check for all C/N lines which have a name which matches the
1131 * name given and a host which matches. A host alias which is the
1132 * same as the server name is also acceptable in the host field of a
1134 * @param cptr Peer server to check.
1135 * @return 0 if accepted, -1 if access denied.
1137 int conf_check_server(struct Client *cptr)
1139 struct ConfItem* c_conf = NULL;
1142 Debug((DEBUG_DNS, "sv_cl: check access for %s[%s]",
1143 cli_name(cptr), cli_sockhost(cptr)));
1145 if (IsUnknown(cptr) && !attach_confs_byname(cptr, cli_name(cptr), CONF_SERVER)) {
1146 Debug((DEBUG_DNS, "No C/N lines for %s", cli_sockhost(cptr)));
1149 lp = cli_confs(cptr);
1151 * We initiated this connection so the client should have a C and N
1152 * line already attached after passing through the connect_server()
1155 if (IsConnecting(cptr) || IsHandshake(cptr)) {
1156 c_conf = find_conf_byname(lp, cli_name(cptr), CONF_SERVER);
1158 sendto_opmask_butone(0, SNO_OLDSNO,
1159 "Connect Error: lost Connect block for %s",
1161 det_confs_butmask(cptr, 0);
1166 /* Try finding the Connect block by DNS name and IP next. */
1167 if (!c_conf && !(c_conf = find_conf_byhost(lp, cli_sockhost(cptr), CONF_SERVER)))
1168 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1171 * Attach by IP# only if all other checks have failed.
1172 * It is quite possible to get here with the strange things that can
1173 * happen when using DNS in the way the irc server does. -avalon
1176 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1178 * detach all conf lines that got attached by attach_confs()
1180 det_confs_butmask(cptr, 0);
1182 * if no Connect block, then deny access
1185 Debug((DEBUG_DNS, "sv_cl: access denied: %s[%s@%s]",
1186 cli_name(cptr), cli_username(cptr), cli_sockhost(cptr)));
1190 * attach the Connect block to the client structure for later use.
1192 attach_conf(cptr, c_conf);
1194 if (!irc_in_addr_valid(&c_conf->address.addr))
1195 memcpy(&c_conf->address.addr, &cli_ip(cptr), sizeof(c_conf->address.addr));
1197 Debug((DEBUG_DNS, "sv_cl: access ok: %s[%s]",
1198 cli_name(cptr), cli_sockhost(cptr)));