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_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;
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)
98 if (NULL == (file = fbopen(filename, "r"))) {
99 send_reply(sptr, ERR_NOMOTD);
100 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
101 ":Connection from your host is refused on this server.");
105 while (fbgets(line, sizeof(line) - 1, file)) {
106 char* end = line + strlen(line);
109 if ('\n' == *end || '\r' == *end)
114 send_reply(sptr, RPL_MOTD, line);
116 send_reply(sptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
117 ":Connection from your host is refused on this server.");
121 /** Allocate a new struct ConfItem and link it to #GlobalConfList.
122 * @return Newly allocated structure.
124 struct ConfItem* make_conf(int type)
126 struct ConfItem* aconf;
128 aconf = (struct ConfItem*) MyMalloc(sizeof(struct ConfItem));
131 memset(aconf, 0, sizeof(struct ConfItem));
132 aconf->status = type;
133 aconf->next = GlobalConfList;
134 GlobalConfList = aconf;
138 /** Free a struct ConfItem and any resources it owns.
139 * @param aconf Item to free.
141 void free_conf(struct ConfItem *aconf)
143 Debug((DEBUG_DEBUG, "free_conf: %s %s %d",
144 aconf->host ? aconf->host : "*",
145 aconf->name ? aconf->name : "*",
146 aconf->address.port));
147 if (aconf->dns_pending)
148 delete_resolver_queries(aconf);
149 MyFree(aconf->username);
151 MyFree(aconf->origin_name);
153 memset(aconf->passwd, 0, strlen(aconf->passwd));
154 MyFree(aconf->passwd);
156 MyFree(aconf->hub_limit);
161 /** Disassociate configuration from the client.
162 * @param cptr Client to operate on.
163 * @param aconf ConfItem to detach.
165 static void detach_conf(struct Client* cptr, struct ConfItem* aconf)
172 assert(0 < aconf->clients);
174 lp = &(cli_confs(cptr));
177 if ((*lp)->value.aconf == aconf) {
178 if (aconf->conn_class && (aconf->status & CONF_CLIENT_MASK) && ConfLinks(aconf) > 0)
181 assert(0 < aconf->clients);
182 if (0 == --aconf->clients && IsIllegal(aconf))
193 /** Parse a user\@host mask into username and host or IP parts.
194 * If \a host contains no username part, set \a aconf->username to
195 * NULL. If the host part of \a host looks like an IP mask, set \a
196 * aconf->addrbits and \a aconf->address to match. Otherwise, set
197 * \a aconf->host, and set \a aconf->addrbits to -1.
198 * @param[in,out] aconf Configuration item to set.
199 * @param[in] host user\@host mask to parse.
201 void conf_parse_userhost(struct ConfItem *aconf, char *host)
204 unsigned char addrbits;
206 MyFree(aconf->username);
208 host_part = strchr(host, '@');
211 DupString(aconf->username, host);
214 aconf->username = NULL;
217 DupString(aconf->host, host_part);
218 if (ipmask_parse(aconf->host, &aconf->address.addr, &addrbits))
219 aconf->addrbits = addrbits;
221 aconf->addrbits = -1;
224 /** Copies a completed DNS query into its ConfItem.
225 * @param vptr Pointer to struct ConfItem for the block.
226 * @param hp DNS reply, or NULL if the lookup failed.
228 static void conf_dns_callback(void* vptr, const struct irc_in_addr *addr, const char *h_name)
230 struct ConfItem* aconf = (struct ConfItem*) vptr;
232 aconf->dns_pending = 0;
234 memcpy(&aconf->address.addr, addr, sizeof(aconf->address.addr));
237 /** Start a nameserver lookup of the conf host. If the conf entry is
238 * currently doing a lookup, do nothing.
239 * @param aconf ConfItem for which to start a request.
241 static void conf_dns_lookup(struct ConfItem* aconf)
243 if (!aconf->dns_pending) {
244 char buf[HOSTLEN + 1];
246 host_from_uh(buf, aconf->host, HOSTLEN);
247 gethost_byname(buf, conf_dns_callback, aconf);
248 aconf->dns_pending = 1;
253 /** Start lookups of all addresses in the conf line. The origin must
254 * be a numeric IP address. If the remote host field is not an IP
255 * address, start a DNS lookup for it.
256 * @param aconf Connection to do lookups for.
259 lookup_confhost(struct ConfItem *aconf)
261 if (EmptyString(aconf->host) || EmptyString(aconf->name)) {
262 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
263 aconf->host, aconf->name));
266 if (aconf->origin_name
267 && !ircd_aton(&aconf->origin.addr, aconf->origin_name)) {
268 Debug((DEBUG_ERROR, "Origin name error: (%s) (%s)",
269 aconf->origin_name, aconf->name));
272 * Do name lookup now on hostnames given and store the
273 * ip numbers in conf structure.
275 if (IsIP6Char(*aconf->host)) {
276 if (!ircd_aton(&aconf->address.addr, aconf->host)) {
277 Debug((DEBUG_ERROR, "Host/server name error: (%s) (%s)",
278 aconf->host, aconf->name));
282 conf_dns_lookup(aconf);
285 /** Find a server by name or hostname.
286 * @param name Server name to find.
287 * @return Pointer to the corresponding ConfItem, or NULL if none exists.
289 struct ConfItem* conf_find_server(const char* name)
291 struct ConfItem* conf;
294 for (conf = GlobalConfList; conf; conf = conf->next) {
295 if (CONF_SERVER == conf->status) {
297 * Check first servernames, then try hostnames.
298 * XXX - match returns 0 if there _is_ a match... guess they
299 * haven't decided what true is yet
301 if (0 == match(name, conf->name))
308 /** Evaluate connection rules.
309 * @param name Name of server to check
310 * @param mask Filter for CRule types (only consider if type & \a mask != 0).
311 * @return Name of rule that forbids the connection; NULL if no prohibitions.
313 const char* conf_eval_crule(const char* name, int mask)
315 struct CRuleConf* p = cruleConfList;
318 for ( ; p; p = p->next) {
319 if (0 != (p->type & mask) && 0 == match(p->hostmask, name)) {
320 if (crule_eval(p->node))
327 /** Remove all conf entries from the client except those which match
328 * the status field mask.
329 * @param cptr Client to operate on.
330 * @param mask ConfItem types to keep.
332 void det_confs_butmask(struct Client* cptr, int mask)
338 for (link = cli_confs(cptr); link; link = next) {
340 if ((link->value.aconf->status & mask) == 0)
341 detach_conf(cptr, link->value.aconf);
345 /** Find the first (best) Client block to attach.
346 * @param cptr Client for whom to check rules.
347 * @return Authorization check result.
349 enum AuthorizationCheckResult attach_iline(struct Client* cptr)
351 struct ConfItem* aconf;
355 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
356 if (aconf->status != CONF_CLIENT)
358 /* If you change any of this logic, please make corresponding
359 * changes in conf_debug_iline() below.
361 if (aconf->address.port && aconf->address.port != cli_listener(cptr)->addr.port)
363 if (aconf->username && match(aconf->username, cli_username(cptr)))
365 if (aconf->host && match(aconf->host, cli_sockhost(cptr)))
367 if ((aconf->addrbits >= 0)
368 && !ipmask_check(&cli_ip(cptr), &aconf->address.addr, aconf->addrbits))
370 if (IPcheck_nr(cptr) > aconf->maximum)
371 return ACR_TOO_MANY_FROM_IP;
373 SetFlag(cptr, FLAG_DOID);
374 return attach_conf(cptr, aconf);
376 return ACR_NO_AUTHORIZATION;
379 /** Interpret \a client as a client specifier and show which Client
380 * block(s) match that client.
382 * The client specifier may contain an IP address, hostname, listener
383 * port, or a combination of those separated by commas. IP addresses
384 * and hostnamese may be preceded by "username@"; the last given
385 * username will be used for the match.
387 * @param[in] client Client specifier.
388 * @return Matching Client block structure.
390 struct ConfItem *conf_debug_iline(const char *client)
392 struct irc_in_addr address;
393 struct ConfItem *aconf;
394 struct DenyConf *deny;
396 unsigned short listener;
397 char username[USERLEN+1], hostname[HOSTLEN+1], realname[REALLEN+1];
399 /* Initialize variables. */
401 memset(&address, 0, sizeof(address));
402 memset(&username, 0, sizeof(username));
403 memset(&hostname, 0, sizeof(hostname));
404 memset(&realname, 0, sizeof(realname));
406 /* Parse client specifier. */
408 struct irc_in_addr tmpaddr;
411 /* Try to parse as listener port number first. */
412 tmp = strtol(client, &sep, 10);
413 if (tmp && (*sep == '\0' || *sep == ',')) {
415 client = sep + (*sep != '\0');
419 /* Maybe username@ before an IP address or hostname? */
420 tmp = strcspn(client, ",@");
421 if (client[tmp] == '@') {
424 ircd_strncpy(username, client, tmp);
425 /* and fall through */
429 /* Looks like an IP address? */
430 tmp = ircd_aton(&tmpaddr, client);
431 if (tmp && (client[tmp] == '\0' || client[tmp] == ',')) {
432 memcpy(&address, &tmpaddr, sizeof(address));
433 client += tmp + (client[tmp] != '\0');
438 if (client[0] == '$' && client[1] == 'R') {
440 for (tmp = 0; *client != '\0' && *client != ',' && tmp < REALLEN; ++client, ++tmp) {
442 realname[tmp] = *++client;
444 realname[tmp] = *client;
449 /* Else must be a hostname. */
450 tmp = strcspn(client, ",");
453 ircd_strncpy(hostname, client, tmp);
454 client += tmp + (client[tmp] != '\0');
457 /* Walk configuration to find matching Client block. */
458 for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
459 if (aconf->status != CONF_CLIENT)
461 if (aconf->address.port && aconf->address.port != listener) {
462 fprintf(stdout, "Listener port mismatch: %u != %u\n", aconf->address.port, listener);
465 if (aconf->username && match(aconf->username, username)) {
466 fprintf(stdout, "Username mismatch: %s != %s\n", aconf->username, username);
469 if (aconf->host && match(aconf->host, hostname)) {
470 fprintf(stdout, "Hostname mismatch: %s != %s\n", aconf->host, hostname);
473 if ((aconf->addrbits >= 0)
474 && !ipmask_check(&address, &aconf->address.addr, aconf->addrbits)) {
475 fprintf(stdout, "IP address mismatch: %s != %s\n", aconf->name, ircd_ntoa(&address));
478 fprintf(stdout, "Match! username=%s host=%s ip=%s class=%s maxlinks=%u password=%s\n",
479 (aconf->username ? aconf->username : "(null)"),
480 (aconf->host ? aconf->host : "(null)"),
481 (aconf->name ? aconf->name : "(null)"),
482 ConfClass(aconf), aconf->maximum,
483 (aconf->passwd ? aconf->passwd : "(null)"));
487 /* If no authorization, say so and exit. */
490 fprintf(stdout, "No authorization found.\n");
494 /* Look for a Kill block with the user's name on it. */
495 for (deny = denyConfList; deny; deny = deny->next) {
496 if (deny->usermask && match(deny->usermask, username))
498 if (deny->realmask && match(deny->realmask, realname))
500 if (deny->bits > 0) {
501 if (!ipmask_check(&address, &deny->address, deny->bits))
503 } else if (deny->hostmask && match(deny->hostmask, hostname))
506 /* Looks like a match; report it. */
507 fprintf(stdout, "Denied! usermask=%s realmask=\"%s\" hostmask=%s (bits=%u)\n",
508 deny->usermask ? deny->usermask : "(null)",
509 deny->realmask ? deny->realmask : "(null)",
510 deny->hostmask ? deny->hostmask : "(null)",
517 /** Check whether a particular ConfItem is already attached to a
519 * @param aconf ConfItem to search for
520 * @param cptr Client to check
521 * @return Non-zero if \a aconf is attached to \a cptr, zero if not.
523 static int is_attached(struct ConfItem *aconf, struct Client *cptr)
527 for (lp = cli_confs(cptr); lp; lp = lp->next) {
528 if (lp->value.aconf == aconf)
534 /** Associate a specific configuration entry to a *local* client (this
535 * is the one which used in accepting the connection). Note, that this
536 * automatically changes the attachment if there was an old one...
537 * @param cptr Client to attach \a aconf to
538 * @param aconf ConfItem to attach
539 * @return Authorization check result.
541 enum AuthorizationCheckResult attach_conf(struct Client *cptr, struct ConfItem *aconf)
545 if (is_attached(aconf, cptr))
546 return ACR_ALREADY_AUTHORIZED;
547 if (IsIllegal(aconf))
548 return ACR_NO_AUTHORIZATION;
549 if ((aconf->status & (CONF_OPERATOR | CONF_CLIENT)) &&
550 ConfLinks(aconf) >= ConfMaxLinks(aconf) && ConfMaxLinks(aconf) > 0)
551 return ACR_TOO_MANY_IN_CLASS; /* Use this for printing error message */
553 lp->next = cli_confs(cptr);
554 lp->value.aconf = aconf;
555 cli_confs(cptr) = lp;
557 if (aconf->status & CONF_CLIENT_MASK)
562 /** Return our LocalConf configuration structure.
563 * @return A pointer to #localConf.
565 const struct LocalConf* conf_get_local(void)
570 /** Attach ConfItems to a client if the name passed matches that for
571 * the ConfItems or is an exact match for them.
572 * @param cptr Client getting the ConfItem attachments.
573 * @param name Filter to match ConfItem::name.
574 * @param statmask Filter to limit ConfItem::status.
575 * @return First ConfItem attached to \a cptr.
577 struct ConfItem* attach_confs_byname(struct Client* cptr, const char* name,
580 struct ConfItem* tmp;
581 struct ConfItem* first = NULL;
585 if (HOSTLEN < strlen(name))
588 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
589 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
590 assert(0 != tmp->name);
591 if (0 == match(tmp->name, name) || 0 == ircd_strcmp(tmp->name, name)) {
592 if (ACR_OK == attach_conf(cptr, tmp) && !first)
600 /** Attach ConfItems to a client if the host passed matches that for
601 * the ConfItems or is an exact match for them.
602 * @param cptr Client getting the ConfItem attachments.
603 * @param host Filter to match ConfItem::host.
604 * @param statmask Filter to limit ConfItem::status.
605 * @return First ConfItem attached to \a cptr.
607 struct ConfItem* attach_confs_byhost(struct Client* cptr, const char* host,
610 struct ConfItem* tmp;
611 struct ConfItem* first = 0;
614 if (HOSTLEN < strlen(host))
617 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
618 if (0 != (tmp->status & statmask) && !IsIllegal(tmp)) {
619 assert(0 != tmp->host);
620 if (0 == match(tmp->host, host) || 0 == ircd_strcmp(tmp->host, host)) {
621 if (ACR_OK == attach_conf(cptr, tmp) && !first)
629 /** Find a ConfItem that has the same name and user+host fields as
630 * specified. Requires an exact match for \a name.
631 * @param name Name to match
632 * @param cptr Client to match against
633 * @param statmask Filter for ConfItem::status
634 * @return First found matching ConfItem.
636 struct ConfItem* find_conf_exact(const char* name, struct Client *cptr, int statmask)
638 struct ConfItem *tmp;
640 for (tmp = GlobalConfList; tmp; tmp = tmp->next) {
641 if (!(tmp->status & statmask) || !tmp->name || !tmp->host ||
642 0 != ircd_strcmp(tmp->name, name))
645 && (EmptyString(cli_username(cptr))
646 || match(tmp->username, cli_username(cptr))))
648 if (tmp->addrbits < 0)
650 if (match(tmp->host, cli_sockhost(cptr)))
653 else if (!ipmask_check(&cli_ip(cptr), &tmp->address.addr, tmp->addrbits))
655 if ((tmp->status & CONF_OPERATOR)
656 && (MaxLinks(tmp->conn_class) > 0)
657 && (tmp->clients >= MaxLinks(tmp->conn_class)))
664 /** Find a ConfItem from a list that has a name that matches \a name.
665 * @param lp List to search in.
666 * @param name Filter for ConfItem::name field; matches either exactly
668 * @param statmask Filter for ConfItem::status.
669 * @return First matching ConfItem from \a lp.
671 struct ConfItem* find_conf_byname(struct SLink* lp, const char* name,
674 struct ConfItem* tmp;
677 if (HOSTLEN < strlen(name))
680 for (; lp; lp = lp->next) {
681 tmp = lp->value.aconf;
682 if (0 != (tmp->status & statmask)) {
683 assert(0 != tmp->name);
684 if (0 == ircd_strcmp(tmp->name, name) || 0 == match(tmp->name, name))
691 /** Find a ConfItem from a list that has a host that matches \a host.
692 * @param lp List to search in.
693 * @param host Filter for ConfItem::host field; matches as a glob.
694 * @param statmask Filter for ConfItem::status.
695 * @return First matching ConfItem from \a lp.
697 struct ConfItem* find_conf_byhost(struct SLink* lp, const char* host,
700 struct ConfItem* tmp = NULL;
703 if (HOSTLEN < strlen(host))
706 for (; lp; lp = lp->next) {
707 tmp = lp->value.aconf;
708 if (0 != (tmp->status & statmask)) {
709 assert(0 != tmp->host);
710 if (0 == match(tmp->host, host))
717 /** Find a ConfItem from a list that has an address equal to \a ip.
718 * @param lp List to search in.
719 * @param ip Filter for ConfItem::address field; matches exactly.
720 * @param statmask Filter for ConfItem::status.
721 * @return First matching ConfItem from \a lp.
723 struct ConfItem* find_conf_byip(struct SLink* lp, const struct irc_in_addr* ip,
726 struct ConfItem* tmp;
728 for (; lp; lp = lp->next) {
729 tmp = lp->value.aconf;
730 if (0 != (tmp->status & statmask)
731 && !irc_in_addr_cmp(&tmp->address.addr, ip))
737 /** Free all CRules from #cruleConfList. */
738 void conf_erase_crule_list(void)
740 struct CRuleConf* next;
741 struct CRuleConf* p = cruleConfList;
743 for ( ; p; p = next) {
745 crule_free(&p->node);
753 /** Return #cruleConfList.
754 * @return #cruleConfList
756 const struct CRuleConf* conf_get_crule_list(void)
758 return cruleConfList;
761 /** Free all deny rules from #denyConfList. */
762 void conf_erase_deny_list(void)
764 struct DenyConf* next;
765 struct DenyConf* p = denyConfList;
766 for ( ; p; p = next) {
777 /** Return #denyConfList.
778 * @return #denyConfList
780 const struct DenyConf* conf_get_deny_list(void)
785 /** Find any existing quarantine for the named channel.
786 * @param chname Channel name to search for.
787 * @return Reason for channel's quarantine, or NULL if none exists.
790 find_quarantine(const char *chname)
794 for (qline = GlobalQuarantineList; qline; qline = qline->next)
795 if (!ircd_strcmp(qline->chname, chname))
796 return qline->reason;
800 /** Free all qline structs from #GlobalQuarantineList. */
801 void clear_quarantines(void)
804 while ((qline = GlobalQuarantineList))
806 GlobalQuarantineList = qline->next;
807 MyFree(qline->reason);
808 MyFree(qline->chname);
813 /** When non-zero, indicates that a configuration error has been seen in this pass. */
814 static int conf_error;
815 /** When non-zero, indicates that the configuration file was loaded at least once. */
816 static int conf_already_read;
817 extern void yyparse(void);
818 extern int init_lexer(void);
819 extern void deinit_lexer(void);
821 /** Read configuration file.
822 * @return Zero on failure, non-zero on success. */
823 int read_configuration_file(void)
826 feature_unmark(); /* unmark all features for resetting later */
827 clear_nameservers(); /* clear previous list of DNS servers */
832 feature_mark(); /* reset unmarked features */
833 conf_already_read = 1;
837 /** Report an error message about the configuration file.
838 * @param msg The error to report.
841 yyerror(const char *msg)
843 sendto_opmask_butone(0, SNO_ALL, "Config file parse error line %d: %s",
845 log_write(LS_CONFIG, L_ERROR, 0, "Config file parse error line %d: %s",
847 if (!conf_already_read)
848 fprintf(stderr, "Config file parse error line %d: %s\n", lineno, msg);
852 /** Attach CONF_UWORLD items to a server and everything attached to it. */
854 attach_conf_uworld(struct Client *cptr)
858 attach_confs_byhost(cptr, cli_name(cptr), CONF_UWORLD);
859 for (lp = cli_serv(cptr)->down; lp; lp = lp->next)
860 attach_conf_uworld(lp->value.cptr);
863 /** Free all memory associated with service mapping \a smap.
864 * @param smap[in] The mapping to free.
866 void free_mapping(struct s_map *smap)
868 struct nick_host *nh, *next;
869 for (nh = smap->services; nh; nh = next)
875 MyFree(smap->command);
876 MyFree(smap->prepend);
880 /** Unregister and free all current service mappings. */
881 static void close_mappings(void)
883 struct s_map *map, *next;
885 for (map = GlobalServiceMapList; map; map = next) {
887 unregister_mapping(map);
890 GlobalServiceMapList = NULL;
893 /** Reload the configuration file.
894 * @param cptr Client that requested rehash (if a signal, &me).
895 * @param sig Type of rehash (0 = oper-requested, 1 = signal, 2 =
896 * oper-requested but do not restart resolver)
897 * @return CPTR_KILLED if any client was K/G-lined because of the
898 * rehash; otherwise 0.
900 int rehash(struct Client *cptr, int sig)
902 struct ConfItem** tmp = &GlobalConfList;
903 struct ConfItem* tmp2;
904 struct Client* acptr;
910 sendto_opmask_butone(0, SNO_OLDSNO,
911 "Got signal SIGHUP, reloading ircd conf. file");
913 while ((tmp2 = *tmp)) {
916 * Configuration entry is still in use by some
917 * local clients, cannot delete it--mark it so
918 * that it will be deleted when the last client
921 if (CONF_CLIENT == (tmp2->status & CONF_CLIENT))
927 tmp2->status |= CONF_ILLEGAL;
934 conf_erase_crule_list();
935 conf_erase_deny_list();
939 * delete the juped nicks list
946 mark_listeners_closing();
950 read_configuration_file();
955 log_reopen(); /* reopen log files */
959 class_delete_marked(); /* unless it fails */
962 * Flush out deleted I and P lines although still in use.
964 for (tmp = &GlobalConfList; (tmp2 = *tmp);) {
965 if (CONF_ILLEGAL == (tmp2->status & CONF_ILLEGAL)) {
975 for (i = 0; i <= HighestFd; i++) {
976 if ((acptr = LocalClientArray[i])) {
977 assert(!IsMe(acptr));
979 det_confs_butmask(acptr, ~(CONF_UWORLD | CONF_ILLEGAL));
980 /* Because admin's are getting so uppity about people managing to
981 * get past K/G's etc, we'll "fix" the bug by actually explaining
984 if ((found_g = find_kill(acptr))) {
985 sendto_opmask_butone(0, found_g == -2 ? SNO_GLINE : SNO_OPERKILL,
986 found_g == -2 ? "G-line active for %s%s" :
987 "K-line active for %s%s",
988 IsUnknown(acptr) ? "Unregistered Client ":"",
989 get_client_name(acptr, SHOW_IP));
990 if (exit_client(cptr, acptr, &me, found_g == -2 ? "G-lined" :
991 "K-lined") == CPTR_KILLED)
997 attach_conf_uworld(&me);
1002 /** Read configuration file for the very first time.
1003 * @return Non-zero on success, zero on failure.
1008 if (read_configuration_file()) {
1010 * make sure we're sane to start if the config
1011 * file read didn't get everything we need.
1012 * XXX - should any of these abort the server?
1013 * TODO: add warning messages
1015 if (0 == localConf.name || 0 == localConf.numeric)
1020 if (0 == localConf.location1)
1021 DupString(localConf.location1, "");
1022 if (0 == localConf.location2)
1023 DupString(localConf.location2, "");
1024 if (0 == localConf.contact)
1025 DupString(localConf.contact, "");
1032 /** Searches for a K/G-line for a client. If one is found, notify the
1033 * user and disconnect them.
1034 * @param cptr Client to search for.
1035 * @return 0 if client is accepted; -1 if client was locally denied
1036 * (K-line); -2 if client was globally denied (G-line).
1038 int find_kill(struct Client *cptr)
1042 const char* realname;
1043 struct DenyConf* deny;
1044 struct Gline* agline = NULL;
1048 if (!cli_user(cptr))
1051 host = cli_sockhost(cptr);
1052 name = cli_user(cptr)->username;
1053 realname = cli_info(cptr);
1055 assert(strlen(host) <= HOSTLEN);
1056 assert((name ? strlen(name) : 0) <= HOSTLEN);
1057 assert((realname ? strlen(realname) : 0) <= REALLEN);
1059 /* 2000-07-14: Rewrote this loop for massive speed increases.
1062 for (deny = denyConfList; deny; deny = deny->next) {
1063 if (deny->usermask && match(deny->usermask, name))
1065 if (deny->realmask && match(deny->realmask, realname))
1067 if (deny->bits > 0) {
1068 if (!ipmask_check(&cli_ip(cptr), &deny->address, deny->bits))
1070 } else if (deny->hostmask && match(deny->hostmask, host))
1073 if (EmptyString(deny->message))
1074 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP,
1075 ":Connection from your host is refused on this server.");
1077 if (deny->flags & DENY_FLAGS_FILE)
1078 killcomment(cptr, deny->message);
1080 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", deny->message);
1085 if (!feature_bool(FEAT_DISABLE_GLINES) && (agline = gline_lookup(cptr, 0))) {
1087 * find active glines
1088 * added a check against the user's IP address to find_gline() -Kev
1090 send_reply(cptr, SND_EXPLICIT | ERR_YOUREBANNEDCREEP, ":%s.", GlineReason(agline));
1097 /** Attempt to attach Client blocks to \a cptr. If attach_iline()
1098 * fails for the client, emit a debugging message.
1099 * @param cptr Client to check for access.
1100 * @return Access check result.
1102 enum AuthorizationCheckResult conf_check_client(struct Client *cptr)
1104 enum AuthorizationCheckResult acr = ACR_OK;
1106 if ((acr = attach_iline(cptr))) {
1107 Debug((DEBUG_DNS, "ch_cl: access denied: %s[%s]",
1108 cli_name(cptr), cli_sockhost(cptr)));
1114 /** Check access for a server given its name (passed in cptr struct).
1115 * Must check for all C/N lines which have a name which matches the
1116 * name given and a host which matches. A host alias which is the
1117 * same as the server name is also acceptable in the host field of a
1119 * @param cptr Peer server to check.
1120 * @return 0 if accepted, -1 if access denied.
1122 int conf_check_server(struct Client *cptr)
1124 struct ConfItem* c_conf = NULL;
1127 Debug((DEBUG_DNS, "sv_cl: check access for %s[%s]",
1128 cli_name(cptr), cli_sockhost(cptr)));
1130 if (IsUnknown(cptr) && !attach_confs_byname(cptr, cli_name(cptr), CONF_SERVER)) {
1131 Debug((DEBUG_DNS, "No C/N lines for %s", cli_sockhost(cptr)));
1134 lp = cli_confs(cptr);
1136 * We initiated this connection so the client should have a C and N
1137 * line already attached after passing through the connect_server()
1140 if (IsConnecting(cptr) || IsHandshake(cptr)) {
1141 c_conf = find_conf_byname(lp, cli_name(cptr), CONF_SERVER);
1143 sendto_opmask_butone(0, SNO_OLDSNO,
1144 "Connect Error: lost Connect block for %s",
1146 det_confs_butmask(cptr, 0);
1151 /* Try finding the Connect block by DNS name and IP next. */
1152 if (!c_conf && !(c_conf = find_conf_byhost(lp, cli_sockhost(cptr), CONF_SERVER)))
1153 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1156 * Attach by IP# only if all other checks have failed.
1157 * It is quite possible to get here with the strange things that can
1158 * happen when using DNS in the way the irc server does. -avalon
1161 c_conf = find_conf_byip(lp, &cli_ip(cptr), CONF_SERVER);
1163 * detach all conf lines that got attached by attach_confs()
1165 det_confs_butmask(cptr, 0);
1167 * if no Connect block, then deny access
1170 Debug((DEBUG_DNS, "sv_cl: access denied: %s[%s@%s]",
1171 cli_name(cptr), cli_username(cptr), cli_sockhost(cptr)));
1175 * attach the Connect block to the client structure for later use.
1177 attach_conf(cptr, c_conf);
1179 if (!irc_in_addr_valid(&c_conf->address.addr))
1180 memcpy(&c_conf->address.addr, &cli_ip(cptr), sizeof(c_conf->address.addr));
1182 Debug((DEBUG_DNS, "sv_cl: access ok: %s[%s]",
1183 cli_name(cptr), cli_sockhost(cptr)));