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
22 * @version $Id: s_conf.c 1839 2007-10-30 02:13:09Z entrope $
31 #include "ircd_features.h"
36 #include "ircd_alloc.h"
37 #include "ircd_chattr.h"
39 #include "ircd_reply.h"
40 #include "ircd_snprintf.h"
41 #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;
77 /** Global list of WebIRC blocks. */
78 struct webirc_block *GlobalWebIRCConf;
80 /** Current line number in scanner input. */
83 /** Configuration information for #me. */
84 struct LocalConf localConf;
85 /** Global list of connection rules. */
86 struct CRuleConf* cruleConfList;
87 /** Global list of K-lines. */
88 struct DenyConf* denyConfList;
90 /** Tell a user that they are banned, dumping the message from a file.
91 * @param sptr Client being rejected
92 * @param filename Send this file's contents to \a sptr
94 static void killcomment(struct Client* sptr, const char* filename)
101 if (NULL == (file = fbopen(filename, "r"))) {
102 send_reply(sptr, ERR_NOMOTD);
103 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
104 ":Connection from your host is refused on this server.");
108 tm = localtime((time_t*) &sb.st_mtime); /* NetBSD needs cast */
109 while (fbgets(line, sizeof(line) - 1, file)) {
110 char* end = line + strlen(line);
113 if ('\n' == *end || '\r' == *end)
118 send_reply(sptr, RPL_MOTD, line);
120 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
121 ":Connection from your host is refused on this server.");
125 /** Allocate a new struct ConfItem and link it to #GlobalConfList.
126 * @return Newly allocated structure.
128 struct ConfItem* make_conf(int type)
130 struct ConfItem* aconf;
132 aconf = (struct ConfItem*) MyMalloc(sizeof(struct ConfItem));
135 memset(aconf, 0, sizeof(struct ConfItem));
136 aconf->status = type;
137 aconf->next = GlobalConfList;
138 GlobalConfList = aconf;
142 /** Free a struct ConfItem and any resources it owns.
143 * @param aconf Item to free.
145 void free_conf(struct ConfItem *aconf)
147 Debug((DEBUG_DEBUG, "free_conf: %s %s %d",
148 aconf->host ? aconf->host : "*",
149 aconf->name ? aconf->name : "*",
150 aconf->address.port));
151 if (aconf->dns_pending)
152 delete_resolver_queries(aconf);
153 MyFree(aconf->username);
155 MyFree(aconf->origin_name);
157 memset(aconf->passwd, 0, strlen(aconf->passwd));
158 MyFree(aconf->passwd);
160 MyFree(aconf->hub_limit);
165 /** Disassociate configuration from the client.
166 * @param cptr Client to operate on.
167 * @param aconf ConfItem to detach.
169 static void detach_conf(struct Client* cptr, struct ConfItem* aconf)
176 assert(0 < aconf->clients);
178 lp = &(cli_confs(cptr));
181 if ((*lp)->value.aconf == aconf) {
182 if (aconf->conn_class && (aconf->status & CONF_CLIENT_MASK) && ConfLinks(aconf) > 0)
185 assert(0 < aconf->clients);
186 if (0 == --aconf->clients && IsIllegal(aconf))
197 /** Parse a user\@host mask into username and host or IP parts.
198 * If \a host contains no username part, set \a aconf->username to
199 * NULL. If the host part of \a host looks like an IP mask, set \a
200 * aconf->addrbits and \a aconf->address to match. Otherwise, set
201 * \a aconf->host, and set \a aconf->addrbits to -1.
202 * @param[in,out] aconf Configuration item to set.
203 * @param[in] host user\@host mask to parse.
205 void conf_parse_userhost(struct ConfItem *aconf, char *host)
208 unsigned char addrbits;
210 MyFree(aconf->username);
212 host_part = strchr(host, '@');
215 DupString(aconf->username, host);
218 aconf->username = NULL;
221 DupString(aconf->host, host_part);
222 if (ipmask_parse(aconf->host, &aconf->address.addr, &addrbits))
223 aconf->addrbits = addrbits;
225 aconf->addrbits = -1;
228 /** Copies a completed DNS query into its ConfItem.
229 * @param vptr Pointer to struct ConfItem for the block.
230 * @param hp DNS reply, or NULL if the lookup failed.
232 static void conf_dns_callback(void* vptr, const struct irc_in_addr *addr, const char *h_name)
234 struct ConfItem* aconf = (struct ConfItem*) vptr;
236 aconf->dns_pending = 0;
238 memcpy(&aconf->address.addr, addr, sizeof(aconf->address.addr));
241 /** Start a nameserver lookup of the conf host. If the conf entry is
242 * currently doing a lookup, do nothing.
243 * @param aconf ConfItem for which to start a request.
245 static void conf_dns_lookup(struct ConfItem* aconf)
247 if (!aconf->dns_pending) {
248 char buf[HOSTLEN + 1];
250 host_from_uh(buf, aconf->host, HOSTLEN);
251 gethost_byname(buf, conf_dns_callback, aconf);
252 aconf->dns_pending = 1;
257 /** Start lookups of all addresses in the conf line. The origin must
258 * be a numeric IP address. If the remote host field is not an IP
259 * address, start a DNS lookup for it.
260 * @param aconf Connection to do lookups for.
263 lookup_confhost(struct ConfItem *aconf)
265 if (EmptyString(aconf->host) || EmptyString(aconf->name)) {
266 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
267 aconf->host, aconf->name));
270 if (aconf->origin_name
271 && !ircd_aton(&aconf->origin.addr, aconf->origin_name)) {
272 Debug((DEBUG_ERROR, "Origin name error: (%s) (%s)",
273 aconf->origin_name, aconf->name));
276 * Do name lookup now on hostnames given and store the
277 * ip numbers in conf structure.
279 if (IsIP6Char(*aconf->host)) {
280 if (!ircd_aton(&aconf->address.addr, aconf->host)) {
281 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
282 aconf->host, aconf->name));
286 conf_dns_lookup(aconf);
289 /** Find a server by name or hostname.
290 * @param name Server name to find.
291 * @return Pointer to the corresponding ConfItem, or NULL if none exists.
293 struct ConfItem* conf_find_server(const char* name)
295 struct ConfItem* conf;
298 for (conf = GlobalConfList; conf; conf = conf->next) {
299 if (CONF_SERVER == conf->status) {
301 * Check first servernames, then try hostnames.
302 * XXX - match returns 0 if there _is_ a match... guess they
303 * haven't decided what true is yet
305 if (0 == match(name, conf->name))
312 /** Evaluate connection rules.
313 * @param name Name of server to check
314 * @param mask Filter for CRule types (only consider if type & \a mask != 0).
315 * @return Name of rule that forbids the connection; NULL if no prohibitions.
317 const char* conf_eval_crule(const char* name, int mask)
319 struct CRuleConf* p = cruleConfList;
322 for ( ; p; p = p->next) {
323 if (0 != (p->type & mask) && 0 == match(p->hostmask, name)) {
324 if (crule_eval(p->node))
331 /** Remove all conf entries from the client except those which match
332 * the status field mask.
333 * @param cptr Client to operate on.
334 * @param mask ConfItem types to keep.
336 void det_confs_butmask(struct Client* cptr, int mask)
342 for (link = cli_confs(cptr); link; link = next) {
344 if ((link->value.aconf->status & mask) == 0)
345 detach_conf(cptr, link->value.aconf);
349 /** Find the first (best) Client block to attach.
350 * @param cptr Client for whom to check rules.
351 * @return Authorization check result.
353 enum AuthorizationCheckResult attach_iline(struct Client* cptr)
355 struct ConfItem* aconf;
356 int maximum_exceeded = 0;
360 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
361 if (aconf->status != CONF_CLIENT)
363 /* If you change any of this logic, please make corresponding
364 * changes in conf_debug_iline() below.
366 if (aconf->address.port && aconf->address.port != cli_listener(cptr)->addr.port)
368 if (aconf->username && match(aconf->username, cli_username(cptr)))
370 if (aconf->host && match(aconf->host, cli_sockhost(cptr)))
372 if ((aconf->addrbits >= 0)
373 && !ipmask_check(&cli_ip(cptr), &aconf->address.addr, aconf->addrbits))
375 if (IPcheck_nr(cptr) > aconf->maximum) {
376 maximum_exceeded = 1;
380 SetFlag(cptr, FLAG_DOID);
381 return attach_conf(cptr, aconf);
383 if(maximum_exceeded) return ACR_TOO_MANY_FROM_IP;
384 return ACR_NO_AUTHORIZATION;
387 /** Interpret \a client as a client specifier and show which Client
388 * block(s) match that client.
390 * The client specifier may contain an IP address, hostname, listener
391 * port, or a combination of those separated by commas. IP addresses
392 * and hostnamese may be preceded by "username@"; the last given
393 * username will be used for the match.
395 * @param[in] client Client specifier.
396 * @return Matching Client block structure.
398 struct ConfItem *conf_debug_iline(const char *client)
400 struct irc_in_addr address;
401 struct ConfItem *aconf;
402 struct DenyConf *deny;
404 unsigned short listener;
405 char username[USERLEN+1], hostname[HOSTLEN+1], realname[REALLEN+1];
407 /* Initialize variables. */
409 memset(&address, 0, sizeof(address));
410 memset(&username, 0, sizeof(username));
411 memset(&hostname, 0, sizeof(hostname));
412 memset(&realname, 0, sizeof(realname));
414 /* Parse client specifier. */
416 struct irc_in_addr tmpaddr;
419 /* Try to parse as listener port number first. */
420 tmp = strtol(client, &sep, 10);
421 if (tmp && (*sep == '\0' || *sep == ',')) {
423 client = sep + (*sep != '\0');
427 /* Maybe username@ before an IP address or hostname? */
428 tmp = strcspn(client, ",@");
429 if (client[tmp] == '@') {
432 ircd_strncpy(username, client, tmp);
433 /* and fall through */
437 /* Looks like an IP address? */
438 tmp = ircd_aton(&tmpaddr, client);
439 if (tmp && (client[tmp] == '\0' || client[tmp] == ',')) {
440 memcpy(&address, &tmpaddr, sizeof(address));
441 client += tmp + (client[tmp] != '\0');
446 if (client[0] == '$' && client[1] == 'R') {
448 for (tmp = 0; *client != '\0' && *client != ',' && tmp < REALLEN; ++client, ++tmp) {
450 realname[tmp] = *++client;
452 realname[tmp] = *client;
457 /* Else must be a hostname. */
458 tmp = strcspn(client, ",");
461 ircd_strncpy(hostname, client, tmp);
462 client += tmp + (client[tmp] != '\0');
465 /* Walk configuration to find matching Client block. */
466 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
467 if (aconf->status != CONF_CLIENT)
469 if (aconf->address.port && aconf->address.port != listener) {
470 fprintf(stdout, "Listener port mismatch: %u != %u\n", aconf->address.port, listener);
473 if (aconf->username && match(aconf->username, username)) {
474 fprintf(stdout, "Username mismatch: %s != %s\n", aconf->username, username);
477 if (aconf->host && match(aconf->host, hostname)) {
478 fprintf(stdout, "Hostname mismatch: %s != %s\n", aconf->host, hostname);
481 if ((aconf->addrbits >= 0)
482 && !ipmask_check(&address, &aconf->address.addr, aconf->addrbits)) {
483 fprintf(stdout, "IP address mismatch: %s != %s\n", aconf->name, ircd_ntoa(&address));
486 fprintf(stdout, "Match! username=%s host=%s ip=%s class=%s maxlinks=%u password=%s\n",
487 (aconf->username ? aconf->username : "(null)"),
488 (aconf->host ? aconf->host : "(null)"),
489 (aconf->name ? aconf->name : "(null)"),
490 ConfClass(aconf), aconf->maximum,
491 (aconf->passwd ? aconf->passwd : "(null)"));
495 /* If no authorization, say so and exit. */
498 fprintf(stdout, "No authorization found.\n");
502 /* Look for a Kill block with the user's name on it. */
503 for (deny = denyConfList; deny; deny = deny->next) {
504 if (deny->usermask && match(deny->usermask, username))
506 if (deny->realmask && match(deny->realmask, realname))
508 if (deny->bits > 0) {
509 if (!ipmask_check(&address, &deny->address, deny->bits))
511 } else if (deny->hostmask && match(deny->hostmask, hostname))
514 /* Looks like a match; report it. */
515 fprintf(stdout, "Denied! usermask=%s realmask=\"%s\" hostmask=%s (bits=%u)\n",
516 deny->usermask ? deny->usermask : "(null)",
517 deny->realmask ? deny->realmask : "(null)",
518 deny->hostmask ? deny->hostmask : "(null)",
525 /** Check whether a particular ConfItem is already attached to a
527 * @param aconf ConfItem to search for
528 * @param cptr Client to check
529 * @return Non-zero if \a aconf is attached to \a cptr, zero if not.
531 static int is_attached(struct ConfItem *aconf, struct Client *cptr)
535 for (lp = cli_confs(cptr); lp; lp = lp->next) {
536 if (lp->value.aconf == aconf)
542 /** Associate a specific configuration entry to a *local* client (this
543 * is the one which used in accepting the connection). Note, that this
544 * automatically changes the attachment if there was an old one...
545 * @param cptr Client to attach \a aconf to
546 * @param aconf ConfItem to attach
547 * @return Authorization check result.
549 enum AuthorizationCheckResult attach_conf(struct Client *cptr, struct ConfItem *aconf)
553 if (is_attached(aconf, cptr))
554 return ACR_ALREADY_AUTHORIZED;
555 if (IsIllegal(aconf))
556 return ACR_NO_AUTHORIZATION;
557 if ((aconf->status & (CONF_OPERATOR | CONF_CLIENT)) &&
558 ConfLinks(aconf) >= ConfMaxLinks(aconf) && ConfMaxLinks(aconf) > 0)
559 return ACR_TOO_MANY_IN_CLASS; /* Use this for printing error message */
561 lp->next = cli_confs(cptr);
562 lp->value.aconf = aconf;
563 cli_confs(cptr) = lp;
565 if (aconf->status & CONF_CLIENT_MASK)
570 /** Return our LocalConf configuration structure.
571 * @return A pointer to #localConf.
573 const struct LocalConf* conf_get_local(void)
578 /** Attach ConfItems to a client if the name passed matches that for
579 * the ConfItems or is an exact match for them.
580 * @param cptr Client getting the ConfItem attachments.
581 * @param name Filter to match ConfItem::name.
582 * @param statmask Filter to limit ConfItem::status.
583 * @return First ConfItem attached to \a cptr.
585 struct ConfItem* attach_confs_byname(struct Client* cptr, const char* name,
588 struct ConfItem* tmp;
589 struct ConfItem* first = NULL;
593 if (HOSTLEN < strlen(name))
596 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
597 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
598 assert(0 != tmp->name);
599 if (0 == match(tmp->name, name) || 0 == ircd_strcmp(tmp->name, name)) {
600 if (ACR_OK == attach_conf(cptr, tmp) && !first)
608 /** Attach ConfItems to a client if the host passed matches that for
609 * the ConfItems or is an exact match for them.
610 * @param cptr Client getting the ConfItem attachments.
611 * @param host Filter to match ConfItem::host.
612 * @param statmask Filter to limit ConfItem::status.
613 * @return First ConfItem attached to \a cptr.
615 struct ConfItem* attach_confs_byhost(struct Client* cptr, const char* host,
618 struct ConfItem* tmp;
619 struct ConfItem* first = 0;
622 if (HOSTLEN < strlen(host))
625 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
626 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
627 assert(0 != tmp->host);
628 if (0 == match(tmp->host, host) || 0 == ircd_strcmp(tmp->host, host)) {
629 if (ACR_OK == attach_conf(cptr, tmp) && !first)
637 /** Find a ConfItem that has the same name and user+host fields as
638 * specified. Requires an exact match for \a name.
639 * @param name Name to match
640 * @param cptr Client to match against
641 * @param statmask Filter for ConfItem::status
642 * @return First found matching ConfItem.
644 struct ConfItem* find_conf_exact(const char* name, struct Client *cptr, int statmask)
646 struct ConfItem *tmp;
648 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
649 if (!(tmp->status & statmask) || !tmp->name || !tmp->host ||
650 0 != ircd_strcmp(tmp->name, name))
653 && (EmptyString(cli_username(cptr))
654 || match(tmp->username, cli_username(cptr))))
656 if (tmp->addrbits < 0)
658 if (match(tmp->host, cli_sockhost(cptr)))
661 else if (!ipmask_check(&cli_ip(cptr), &tmp->address.addr, tmp->addrbits))
663 if ((tmp->status & CONF_OPERATOR)
664 && (MaxLinks(tmp->conn_class) > 0)
665 && (tmp->clients >= MaxLinks(tmp->conn_class)))
672 /** Find a ConfItem from a list that has a name that matches \a name.
673 * @param lp List to search in.
674 * @param name Filter for ConfItem::name field; matches either exactly
676 * @param statmask Filter for ConfItem::status.
677 * @return First matching ConfItem from \a lp.
679 struct ConfItem* find_conf_byname(struct SLink* lp, const char* name,
682 struct ConfItem* tmp;
685 if (HOSTLEN < strlen(name))
688 for (; lp; lp = lp->next) {
689 tmp = lp->value.aconf;
690 if (0 != (tmp->status & statmask)) {
691 assert(0 != tmp->name);
692 if (0 == ircd_strcmp(tmp->name, name) || 0 == match(tmp->name, name))
699 /** Find a ConfItem from a list that has a host that matches \a host.
700 * @param lp List to search in.
701 * @param host Filter for ConfItem::host field; matches as a glob.
702 * @param statmask Filter for ConfItem::status.
703 * @return First matching ConfItem from \a lp.
705 struct ConfItem* find_conf_byhost(struct SLink* lp, const char* host,
708 struct ConfItem* tmp = NULL;
711 if (HOSTLEN < strlen(host))
714 for (; lp; lp = lp->next) {
715 tmp = lp->value.aconf;
716 if (0 != (tmp->status & statmask)) {
717 assert(0 != tmp->host);
718 if (0 == match(tmp->host, host))
725 /** Find a ConfItem from a list that has an address equal to \a ip.
726 * @param lp List to search in.
727 * @param ip Filter for ConfItem::address field; matches exactly.
728 * @param statmask Filter for ConfItem::status.
729 * @return First matching ConfItem from \a lp.
731 struct ConfItem* find_conf_byip(struct SLink* lp, const struct irc_in_addr* ip,
734 struct ConfItem* tmp;
736 for (; lp; lp = lp->next) {
737 tmp = lp->value.aconf;
738 if (0 != (tmp->status & statmask)
739 && !irc_in_addr_cmp(&tmp->address.addr, ip))
745 /** Free all CRules from #cruleConfList. */
746 void conf_erase_crule_list(void)
748 struct CRuleConf* next;
749 struct CRuleConf* p = cruleConfList;
751 for ( ; p; p = next) {
753 crule_free(&p->node);
761 /** Return #cruleConfList.
762 * @return #cruleConfList
764 const struct CRuleConf* conf_get_crule_list(void)
766 return cruleConfList;
769 /** Free all deny rules from #denyConfList. */
770 void conf_erase_deny_list(void)
772 struct DenyConf* next;
773 struct DenyConf* p = denyConfList;
774 for ( ; p; p = next) {
785 /** Return #denyConfList.
786 * @return #denyConfList
788 const struct DenyConf* conf_get_deny_list(void)
793 /** Find any existing quarantine for the named channel.
794 * @param chname Channel name to search for.
795 * @return Reason for channel's quarantine, or NULL if none exists.
798 find_quarantine(const char *chname)
802 for (qline = GlobalQuarantineList; qline; qline = qline->next)
803 if (!ircd_strcmp(qline->chname, chname))
804 return qline->reason;
808 /** Free all qline structs from #GlobalQuarantineList. */
809 void clear_quarantines(void)
812 while ((qline = GlobalQuarantineList))
814 GlobalQuarantineList = qline->next;
815 MyFree(qline->reason);
816 MyFree(qline->chname);
821 /** When non-zero, indicates that a configuration error has been seen in this pass. */
822 static int conf_error;
823 /** When non-zero, indicates that the configuration file was loaded at least once. */
824 static int conf_already_read;
825 extern void yyparse(void);
826 extern int init_lexer(void);
827 extern void deinit_lexer(void);
829 /** Read configuration file.
830 * @return Zero on failure, non-zero on success. */
831 int read_configuration_file(void)
834 feature_unmark(); /* unmark all features for resetting later */
835 clear_nameservers(); /* clear previous list of DNS servers */
840 feature_mark(); /* reset unmarked features */
841 conf_already_read = 1;
845 /** Report an error message about the configuration file.
846 * @param msg The error to report.
849 yyerror(const char *msg)
851 sendto_opmask_butone(0, SNO_ALL, "Config file parse error line %d: %s",
853 log_write(LS_CONFIG, L_ERROR, 0, "Config file parse error line %d: %s",
855 if (!conf_already_read)
856 fprintf(stderr, "Config file parse error line %d: %s\n", lineno, msg);
860 /** Attach CONF_UWORLD items to a server and everything attached to it. */
862 attach_conf_uworld(struct Client *cptr)
866 attach_confs_byhost(cptr, cli_name(cptr), CONF_UWORLD);
867 for (lp = cli_serv(cptr)->down; lp; lp = lp->next)
868 attach_conf_uworld(lp->value.cptr);
871 /** Free all memory associated with service mapping \a smap.
872 * @param smap[in] The mapping to free.
874 void free_mapping(struct s_map *smap)
876 struct nick_host *nh, *next;
877 for (nh = smap->services; nh; nh = next)
883 MyFree(smap->command);
884 MyFree(smap->prepend);
888 /** Unregister and free all current service mappings. */
889 static void close_mappings(void)
891 struct s_map *map, *next;
893 for (map = GlobalServiceMapList; map; map = next) {
895 unregister_mapping(map);
898 GlobalServiceMapList = NULL;
901 /** Reload the configuration file.
902 * @param cptr Client that requested rehash (if a signal, &me).
903 * @param sig Type of rehash (0 = oper-requested, 1 = signal, 2 =
904 * oper-requested but do not restart resolver)
905 * @return CPTR_KILLED if any client was K/G-lined because of the
906 * rehash; otherwise 0.
908 int rehash(struct Client *cptr, int sig)
910 struct ConfItem** tmp = &GlobalConfList;
911 struct ConfItem* tmp2;
912 struct Client* acptr;
918 sendto_opmask_butone(0, SNO_OLDSNO,
919 "Got signal SIGHUP, reloading ircd conf. file");
921 while ((tmp2 = *tmp)) {
924 * Configuration entry is still in use by some
925 * local clients, cannot delete it--mark it so
926 * that it will be deleted when the last client
929 if (CONF_CLIENT == (tmp2->status & CONF_CLIENT))
935 tmp2->status |= CONF_ILLEGAL;
942 conf_erase_crule_list();
943 conf_erase_deny_list();
948 * delete the juped nicks list
955 mark_listeners_closing();
960 ssl_setcert("ircd_cert.pem");
961 ssl_addtrust("ircd_ca.pem");
963 read_configuration_file();
968 log_reopen(); /* reopen log files */
972 class_delete_marked(); /* unless it fails */
975 * Flush out deleted I and P lines although still in use.
977 for (tmp = &GlobalConfList; (tmp2 = *tmp);) {
978 if (CONF_ILLEGAL == (tmp2->status & CONF_ILLEGAL)) {
988 for (i = 0; i <= HighestFd; i++) {
989 if ((acptr = LocalClientArray[i])) {
990 assert(!IsMe(acptr));
992 det_confs_butmask(acptr, ~(CONF_UWORLD | CONF_ILLEGAL));
993 /* Because admin's are getting so uppity about people managing to
994 * get past K/G's etc, we'll "fix" the bug by actually explaining
997 if ((found_g = find_kill(acptr))) {
998 sendto_opmask_butone(0, found_g == -2 ? SNO_GLINE : SNO_OPERKILL,
999 found_g == -2 ? "G-line active for %s%s" :
1000 "K-line active for %s%s",
1001 IsUnknown(acptr) ? "Unregistered Client ":"",
1002 get_client_name(acptr, SHOW_IP));
1003 if (exit_client(cptr, acptr, &me, found_g == -2 ? "G-lined" :
1004 "K-lined") == CPTR_KILLED)
1010 attach_conf_uworld(&me);
1015 /** Read configuration file for the very first time.
1016 * @return Non-zero on success, zero on failure.
1023 ssl_setcert("ircd_cert.pem");
1024 ssl_addtrust("ircd_ca.pem");
1025 if (read_configuration_file()) {
1027 * make sure we're sane to start if the config
1028 * file read didn't get everything we need.
1029 * XXX - should any of these abort the server?
1030 * TODO: add warning messages
1032 if (0 == localConf.name || 0 == localConf.numeric)
1037 if (0 == localConf.location1)
1038 DupString(localConf.location1, "");
1039 if (0 == localConf.location2)
1040 DupString(localConf.location2, "");
1041 if (0 == localConf.contact)
1042 DupString(localConf.contact, "");
1049 /** Searches for a K/G-line for a client. If one is found, notify the
1050 * user and disconnect them.
1051 * @param cptr Client to search for.
1052 * @return 0 if client is accepted; -1 if client was locally denied
1053 * (K-line); -2 if client was globally denied (G-line).
1055 int find_kill(struct Client *cptr)
1059 const char* realname;
1060 struct DenyConf* deny;
1061 struct Gline* agline = NULL;
1065 if (!cli_user(cptr))
1068 host = cli_sockhost(cptr);
1069 name = cli_user(cptr)->username;
1070 realname = cli_info(cptr);
1072 assert(strlen(host) <= HOSTLEN);
1073 assert((name ? strlen(name) : 0) <= HOSTLEN);
1074 assert((realname ? strlen(realname) : 0) <= REALLEN);
1076 /* 2000-07-14: Rewrote this loop for massive speed increases.
1079 for (deny = denyConfList; deny; deny = deny->next) {
1080 if (deny->usermask && match(deny->usermask, name))
1082 if (deny->realmask && match(deny->realmask, realname))
1084 if (deny->bits > 0) {
1085 if (!ipmask_check(&cli_ip(cptr), &deny->address, deny->bits))
1087 } else if (deny->hostmask && match(deny->hostmask, host))
1090 if (EmptyString(deny->message))
1091 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
1092 ":Connection from your host is refused on this server.");
1094 if (deny->flags & DENY_FLAGS_FILE)
1095 killcomment(cptr, deny->message);
1097 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", deny->message);
1102 if (!feature_bool(FEAT_DISABLE_GLINES) && (agline = gline_lookup(cptr, 0))) {
1104 * find active glines
1105 * added a check against the user's IP address to find_gline() -Kev
1107 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", GlineReason(agline));
1114 /** Attempt to attach Client blocks to \a cptr. If attach_iline()
1115 * fails for the client, emit a debugging message.
1116 * @param cptr Client to check for access.
1117 * @return Access check result.
1119 enum AuthorizationCheckResult conf_check_client(struct Client *cptr)
1121 enum AuthorizationCheckResult acr = ACR_OK;
1123 if ((acr = attach_iline(cptr))) {
1124 Debug((DEBUG_DNS, "ch_cl: access denied: %s[%s]",
1125 cli_name(cptr), cli_sockhost(cptr)));
1131 /** Check access for a server given its name (passed in cptr struct).
1132 * Must check for all C/N lines which have a name which matches the
1133 * name given and a host which matches. A host alias which is the
1134 * same as the server name is also acceptable in the host field of a
1136 * @param cptr Peer server to check.
1137 * @return 0 if accepted, -1 if access denied.
1139 int conf_check_server(struct Client *cptr)
1141 struct ConfItem* c_conf = NULL;
1144 Debug((DEBUG_DNS, "sv_cl: check access for %s[%s]",
1145 cli_name(cptr), cli_sockhost(cptr)));
1147 if (IsUnknown(cptr) && !attach_confs_byname(cptr, cli_name(cptr), CONF_SERVER)) {
1148 Debug((DEBUG_DNS, "No C/N lines for %s", cli_sockhost(cptr)));
1151 lp = cli_confs(cptr);
1153 * We initiated this connection so the client should have a C and N
1154 * line already attached after passing through the connect_server()
1157 if (IsConnecting(cptr) || IsHandshake(cptr)) {
1158 c_conf = find_conf_byname(lp, cli_name(cptr), CONF_SERVER);
1160 sendto_opmask_butone(0, SNO_OLDSNO,
1161 "Connect Error: lost Connect block for %s",
1163 det_confs_butmask(cptr, 0);
1168 /* Try finding the Connect block by DNS name and IP next. */
1169 if (!c_conf && !(c_conf = find_conf_byhost(lp, cli_sockhost(cptr), CONF_SERVER)))
1170 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1173 * Attach by IP# only if all other checks have failed.
1174 * It is quite possible to get here with the strange things that can
1175 * happen when using DNS in the way the irc server does. -avalon
1178 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1180 * detach all conf lines that got attached by attach_confs()
1182 det_confs_butmask(cptr, 0);
1184 * if no Connect block, then deny access
1187 Debug((DEBUG_DNS, "sv_cl: access denied: %s[%s@%s]",
1188 cli_name(cptr), cli_username(cptr), cli_sockhost(cptr)));
1192 * attach the Connect block to the client structure for later use.
1194 attach_conf(cptr, c_conf);
1196 if (!irc_in_addr_valid(&c_conf->address.addr))
1197 memcpy(&c_conf->address.addr, &cli_ip(cptr), sizeof(c_conf->address.addr));
1199 Debug((DEBUG_DNS, "sv_cl: access ok: %s[%s]",
1200 cli_name(cptr), cli_sockhost(cptr)));
1204 /* Creates a new webirc-block and returns it. It's not added to the global list, yet. */
1205 struct webirc_block *webirc_block() {
1206 struct webirc_block *block = MyMalloc(sizeof(struct webirc_block));
1207 memset(block, 0, sizeof(struct webirc_block));
1211 /* Adds a previously created webirc-block to the global list. */
1212 void webirc_establish(struct webirc_block *block) {
1213 if(!GlobalWebIRCConf) {
1214 block->next = block;
1215 block->prev = block;
1216 GlobalWebIRCConf = block;
1219 block->next = GlobalWebIRCConf;
1220 block->prev = GlobalWebIRCConf->prev;
1221 GlobalWebIRCConf->prev->next = block;
1222 GlobalWebIRCConf->prev = block;
1223 GlobalWebIRCConf = block;
1227 /* Adds a new value to one webirc-block. */
1228 void webirc_set(struct webirc_block *block, unsigned int type, const char *content, unsigned int len, unsigned int neg) {
1229 struct webirc_node *iter, *node;
1231 ++len; /* add \0 to len */
1233 /* default type is password */
1234 if(type != WEBIRC_HOST && type != WEBIRC_SPOOF) type = WEBIRC_PASS;
1236 node = MyMalloc(sizeof(struct webirc_node) + len);
1239 node->content = (char*)((void*)node + sizeof(struct webirc_node));
1240 memcpy(node->content, content, len);
1242 /* insert into sorted list */
1244 node->next = node->prev = node;
1247 else if(block->list->next == block->list) {
1248 node->next = node->prev = block->list;
1249 block->list->next = block->list->prev = node;
1250 if(block->list->type > type) block->list = node;
1252 else { /* insert into sorted list */
1254 /* find last entry with same type */
1255 if(iter->type <= type) iter = iter->next;
1256 while(iter->type <= type && iter != block->list) iter = iter->next;
1258 node->prev = iter->prev;
1259 iter->prev->next = node;
1264 void webirc_list_clear(struct webirc_block *block) {
1265 struct webirc_node *iter;
1267 if(!block->list) return;
1269 block->list->prev->next = NULL;
1270 while(block->list->next) {
1272 block->list = block->list->next;
1275 MyFree(block->list);
1279 /* Removes the whole webirc-block list. */
1280 void webirc_clear() {
1281 struct webirc_block *iter;
1283 if(!GlobalWebIRCConf) return;
1285 GlobalWebIRCConf->prev->next = NULL;
1286 while(GlobalWebIRCConf->next) {
1287 iter = GlobalWebIRCConf;
1288 GlobalWebIRCConf = iter->next;
1289 webirc_list_clear(iter);
1292 webirc_list_clear(GlobalWebIRCConf);
1293 MyFree(GlobalWebIRCConf);
1294 GlobalWebIRCConf = NULL;