2 * ircd_parser.y: A yacc/bison parser for ircd config files.
3 * This is part of ircu, an Internet Relay Chat server.
4 * The contents of this file are Copyright 2001 Diane Bruce,
5 * Andrew Miller, the ircd-hybrid team and the ircu team.
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 2 of the License, or
9 * (at your option) any later version.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
29 #include "ircd_features.h"
34 #include "ircd_alloc.h"
35 #include "ircd_auth.h"
36 #include "ircd_chattr.h"
38 #include "ircd_reply.h"
39 #include "ircd_snprintf.h"
40 #include "ircd_string.h"
60 #include <arpa/inet.h>
61 #define MAX_STRINGS 80 /* Maximum number of feature params. */
62 extern struct LocalConf localConf;
63 extern struct DenyConf* denyConfList;
64 extern struct CRuleConf* cruleConfList;
65 extern struct ServerConf* serverConfList;
66 extern struct s_map* GlobalServiceMapList;
67 extern struct qline* GlobalQuarantineList;
70 /* Now all the globals we need :/... */
71 int tping, tconn, maxlinks, sendq, port, invert, stringno;
72 char *name, *pass, *host, *ip, *username, *origin, *hub_limit;
73 char *stringlist[MAX_STRINGS];
74 struct ConnectionClass *c_class;
75 struct DenyConf *dconf;
76 struct ServerConf *sconf;
79 struct Privs privs_dirty;
81 static void parse_error(char *pattern,...) {
82 static char error_buffer[1024];
85 ircd_vsnprintf(NULL, error_buffer, sizeof(error_buffer), pattern, vl);
87 yyerror(error_buffer);
158 /* and now a lot of privileges... */
159 %token TPRIV_CHAN_LIMIT TPRIV_MODE_LCHAN TPRIV_DEOP_LCHAN TPRIV_WALK_LCHAN
160 %token TPRIV_LOCAL_KILL TPRIV_REHASH TPRIV_RESTART TPRIV_DIE
161 %token TPRIV_GLINE TPRIV_LOCAL_GLINE TPRIV_LOCAL_JUPE TPRIV_LOCAL_BADCHAN
162 %token TPRIV_LOCAL_OPMODE TPRIV_OPMODE TPRIV_SET TPRIV_WHOX TPRIV_BADCHAN
163 %token TPRIV_SEE_CHAN TPRIV_SHOW_INVIS TPRIV_SHOW_ALL_INVIS TPRIV_PROPAGATE
164 %token TPRIV_UNLIMIT_QUERY TPRIV_DISPLAY TPRIV_SEE_OPERS TPRIV_WIDE_GLINE
165 %token TPRIV_FORCE_OPMODE TPRIV_FORCE_LOCAL_OPMODE TPRIV_APASS_OPMODE
166 /* and some types... */
168 %type <num> timespec timefactor factoredtimes factoredtime
169 %type <num> expr yesorno privtype
179 /* Blocks in the config file... */
180 blocks: blocks block | block;
181 block: adminblock | generalblock | classblock | connectblock |
182 uworldblock | operblock | portblock | jupeblock | clientblock |
183 killblock | cruleblock | motdblock | featuresblock | quarantineblock |
184 pseudoblock | iauthblock | error;
186 /* The timespec, sizespec and expr was ripped straight from
188 timespec: expr | factoredtimes;
190 factoredtimes: factoredtimes factoredtime
195 factoredtime: expr timefactor
200 timefactor: SECONDS { $$ = 1; }
201 | MINUTES { $$ = 60; }
202 | HOURS { $$ = 60 * 60; }
203 | DAYS { $$ = 60 * 60 * 24; }
204 | WEEKS { $$ = 60 * 60 * 24 * 7; }
205 | MONTHS { $$ = 60 * 60 * 24 * 7 * 4; }
206 | YEARS { $$ = 60 * 60 * 24 * 365; }
207 | DECADES { $$ = 60 * 60 * 24 * 365 * 10; };
220 $$ = $1 * 1024 * 1024;
223 $$ = $1 * 1024 * 1024 * 1024;
226 $$ = $1 * 1024 * 1024 * 1024;
230 /* this is an arithmetic expression */
247 /* leave this out until we find why it makes BSD yacc dump core -larne
248 | '-' expr %prec NEG {
256 jupeblock: JUPE '{' jupeitems '}' ';' ;
257 jupeitems: jupeitem jupeitems | jupeitem;
258 jupeitem: jupenick | error;
259 jupenick: NICK '=' QSTRING
265 generalblock: GENERAL '{' generalitems '}'
267 if (localConf.name == NULL)
268 parse_error("Your General block must contain a name.");
269 if (localConf.numeric == 0)
270 parse_error("Your General block must contain a numeric (between 1 and 4095).");
272 generalitems: generalitem generalitems | generalitem;
273 generalitem: generalnumeric | generalname | generalvhost | generaldesc | error;
274 generalnumeric: NUMERIC '=' NUMBER ';'
276 if (localConf.numeric == 0)
277 localConf.numeric = $3;
278 else if (localConf.numeric != $3)
279 parse_error("Redefinition of server numeric %i (%i)", $3,
283 generalname: NAME '=' QSTRING ';'
285 if (localConf.name == NULL)
288 if (strcmp(localConf.name, $3))
289 parse_error("Redefinition of server name %s (%s)", $3,
295 generaldesc: DESCRIPTION '=' QSTRING ';'
297 MyFree(localConf.description);
298 localConf.description = $3;
299 ircd_strncpy(cli_info(&me), $3, REALLEN);
302 generalvhost: VHOST '=' QSTRING ';'
304 struct irc_in_addr addr;
305 if (!ircd_aton(&addr, $3))
306 parse_error("Invalid virtual host '%s'.", $3);
307 else if (irc_in_addr_is_ipv4(&addr))
308 memcpy(&VirtualHost_v4.addr, &addr, sizeof(addr));
310 memcpy(&VirtualHost_v6.addr, &addr, sizeof(addr));
314 adminblock: ADMIN '{' adminitems '}'
316 if (localConf.location1 == NULL)
317 DupString(localConf.location1, "");
318 if (localConf.location2 == NULL)
319 DupString(localConf.location2, "");
320 if (localConf.contact == NULL)
321 DupString(localConf.contact, "");
323 adminitems: adminitems adminitem | adminitem;
324 adminitem: adminlocation | admincontact | error;
325 adminlocation: LOCATION '=' QSTRING ';'
327 if (localConf.location1 == NULL)
328 localConf.location1 = $3;
329 else if (localConf.location2 == NULL)
330 localConf.location2 = $3;
331 else /* Otherwise just drop it. -A1kmm */
334 admincontact: CONTACT '=' QSTRING ';'
336 MyFree(localConf.contact);
337 localConf.contact = $3;
346 struct ConnectionClass *c_class;
347 add_class(name, tping, tconn, maxlinks, sendq);
348 c_class = find_class(name);
349 MyFree(c_class->default_umode);
350 c_class->default_umode = pass;
351 memcpy(&c_class->privs, &privs, sizeof(c_class->privs));
352 memcpy(&c_class->privs_dirty, &privs_dirty, sizeof(c_class->privs_dirty));
355 parse_error("Missing name in class block");
362 memset(&privs, 0, sizeof(privs));
363 memset(&privs_dirty, 0, sizeof(privs_dirty));
365 classitems: classitem classitems | classitem;
366 classitem: classname | classpingfreq | classconnfreq | classmaxlinks |
367 classsendq | classusermode | priv | error;
368 classname: NAME '=' QSTRING ';'
373 classpingfreq: PINGFREQ '=' timespec ';'
377 classconnfreq: CONNECTFREQ '=' timespec ';'
381 classmaxlinks: MAXLINKS '=' expr ';'
385 classsendq: SENDQ '=' sizespec ';'
389 classusermode: USERMODE '=' QSTRING ';'
395 connectblock: CONNECT
398 } '{' connectitems '}'
400 struct ConfItem *aconf = NULL;
402 parse_error("Missing name in connect block");
403 else if (pass == NULL)
404 parse_error("Missing password in connect block");
405 else if (host == NULL)
406 parse_error("Missing host in connect block");
407 else if (strchr(host, '*') || strchr(host, '?'))
408 parse_error("Invalid host '%s' in connect block", host);
409 else if (c_class == NULL)
410 parse_error("Missing class in connect block");
412 aconf = make_conf(CONF_SERVER);
414 aconf->origin_name = origin;
415 aconf->passwd = pass;
416 aconf->conn_class = c_class;
417 aconf->address.port = port;
419 aconf->maximum = maxlinks;
420 aconf->hub_limit = hub_limit;
421 lookup_confhost(aconf);
430 name = pass = host = origin = hub_limit = NULL;
434 connectitems: connectitem connectitems | connectitem;
435 connectitem: connectname | connectpass | connectclass | connecthost
436 | connectport | connectvhost | connectleaf | connecthub
437 | connecthublimit | connectmaxhops | error;
438 connectname: NAME '=' QSTRING ';'
443 connectpass: PASS '=' QSTRING ';'
448 connectclass: CLASS '=' QSTRING ';'
450 c_class = find_class($3);
453 connecthost: HOST '=' QSTRING ';'
458 connectport: PORT '=' NUMBER ';'
462 connectvhost: VHOST '=' QSTRING ';'
467 connectleaf: LEAF ';'
474 DupString(hub_limit, "*");
476 connecthublimit: HUB '=' QSTRING ';'
481 connectmaxhops: MAXHOPS '=' expr ';'
486 uworldblock: UWORLD '{' uworlditems '}' ';';
487 uworlditems: uworlditem uworlditems | uworlditem;
488 uworlditem: uworldname | error;
489 uworldname: NAME '=' QSTRING ';'
491 make_conf(CONF_UWORLD)->host = $3;
494 operblock: OPER '{' operitems '}' ';'
496 struct ConfItem *aconf = NULL;
498 parse_error("Missing name in operator block");
499 else if (pass == NULL)
500 parse_error("Missing password in operator block");
501 else if (host == NULL)
502 parse_error("Missing host in operator block");
503 else if (c_class == NULL)
504 parse_error("Missing class in operator block");
506 aconf = make_conf(CONF_OPERATOR);
508 aconf->passwd = pass;
509 conf_parse_userhost(aconf, host);
510 aconf->conn_class = c_class;
511 memcpy(&aconf->privs, &privs, sizeof(aconf->privs));
512 memcpy(&aconf->privs_dirty, &privs_dirty, sizeof(aconf->privs_dirty));
513 if (!FlagHas(&privs_dirty, PRIV_PROPAGATE)
514 && !FlagHas(&c_class->privs_dirty, PRIV_PROPAGATE))
515 parse_error("Operator block for %s and class %s have no LOCAL setting", name, c_class->cc_name);
522 name = pass = host = NULL;
524 memset(&privs, 0, sizeof(privs));
525 memset(&privs_dirty, 0, sizeof(privs_dirty));
527 operitems: operitem | operitems operitem;
528 operitem: opername | operpass | operhost | operclass | priv | error;
529 opername: NAME '=' QSTRING ';'
534 operpass: PASS '=' QSTRING ';'
539 operhost: HOST '=' QSTRING ';'
542 if (!strchr($3, '@'))
545 host = (char*) MyMalloc((uh_len = strlen($3)+3));
546 ircd_snprintf(0, host, uh_len, "*@%s", $3);
552 operclass: CLASS '=' QSTRING ';'
554 c_class = find_class($3);
558 priv: privtype '=' yesorno ';'
560 FlagSet(&privs_dirty, $1);
561 if (($3 == 1) ^ invert)
568 privtype: TPRIV_CHAN_LIMIT { $$ = PRIV_CHAN_LIMIT; } |
569 TPRIV_MODE_LCHAN { $$ = PRIV_MODE_LCHAN; } |
570 TPRIV_DEOP_LCHAN { $$ = PRIV_DEOP_LCHAN; } |
571 TPRIV_WALK_LCHAN { $$ = PRIV_WALK_LCHAN; } |
572 KILL { $$ = PRIV_KILL; } |
573 TPRIV_LOCAL_KILL { $$ = PRIV_LOCAL_KILL; } |
574 TPRIV_REHASH { $$ = PRIV_REHASH; } |
575 TPRIV_RESTART { $$ = PRIV_RESTART; } |
576 TPRIV_DIE { $$ = PRIV_DIE; } |
577 TPRIV_GLINE { $$ = PRIV_GLINE; } |
578 TPRIV_LOCAL_GLINE { $$ = PRIV_LOCAL_GLINE; } |
579 JUPE { $$ = PRIV_JUPE; } |
580 TPRIV_LOCAL_JUPE { $$ = PRIV_LOCAL_JUPE; } |
581 TPRIV_LOCAL_OPMODE { $$ = PRIV_LOCAL_OPMODE; } |
582 TPRIV_OPMODE { $$ = PRIV_OPMODE; }|
583 TPRIV_SET { $$ = PRIV_SET; } |
584 TPRIV_WHOX { $$ = PRIV_WHOX; } |
585 TPRIV_BADCHAN { $$ = PRIV_BADCHAN; } |
586 TPRIV_LOCAL_BADCHAN { $$ = PRIV_LOCAL_BADCHAN; } |
587 TPRIV_SEE_CHAN { $$ = PRIV_SEE_CHAN; } |
588 TPRIV_SHOW_INVIS { $$ = PRIV_SHOW_INVIS; } |
589 TPRIV_SHOW_ALL_INVIS { $$ = PRIV_SHOW_ALL_INVIS; } |
590 TPRIV_PROPAGATE { $$ = PRIV_PROPAGATE; } |
591 TPRIV_UNLIMIT_QUERY { $$ = PRIV_UNLIMIT_QUERY; } |
592 TPRIV_DISPLAY { $$ = PRIV_DISPLAY; } |
593 TPRIV_SEE_OPERS { $$ = PRIV_SEE_OPERS; } |
594 TPRIV_WIDE_GLINE { $$ = PRIV_WIDE_GLINE; } |
595 LOCAL { $$ = PRIV_PROPAGATE; invert = 1; } |
596 TPRIV_FORCE_OPMODE { $$ = PRIV_FORCE_OPMODE; } |
597 TPRIV_FORCE_LOCAL_OPMODE { $$ = PRIV_FORCE_LOCAL_OPMODE; } |
598 TPRIV_APASS_OPMODE { $$ = PRIV_APASS_OPMODE; } ;
600 yesorno: YES { $$ = 1; } | NO { $$ = 0; };
602 /* The port block... */
603 portblock: PORT '{' portitems '}' ';'
605 if (port > 0 && port <= 0xFFFF)
606 add_listener(port, host, pass, tconn, tping);
608 parse_error("Port %d is out of range", port);
612 port = tconn = tping = 0;
614 portitems: portitem portitems | portitem;
615 portitem: portnumber | portvhost | portmask | portserver | porthidden | error;
616 portnumber: PORT '=' NUMBER ';'
621 portvhost: VHOST '=' QSTRING ';'
627 portmask: MASK '=' QSTRING ';'
633 portserver: SERVER '=' YES ';'
636 } | SERVER '=' NO ';'
641 porthidden: HIDDEN '=' YES ';'
644 } | HIDDEN '=' NO ';'
653 '{' clientitems '}' ';'
655 struct irc_in_addr addr;
656 unsigned char addrbits = 0;
658 if (ip && !ipmask_parse(ip, &addr, &addrbits)) {
659 parse_error("Invalid IP address %s in block", ip);
665 struct ConfItem *aconf = make_conf(CONF_CLIENT);
666 aconf->username = username;
669 memcpy(&aconf->address.addr, &addr, sizeof(aconf->address.addr));
671 memset(&aconf->address.addr, 0, sizeof(aconf->address.addr));
672 aconf->addrbits = addrbits;
674 aconf->conn_class = c_class ? c_class : find_class("default");
675 aconf->maximum = maxlinks;
676 aconf->passwd = pass;
684 clientitems: clientitem clientitems | clientitem;
685 clientitem: clienthost | clientip | clientusername | clientclass | clientpass | clientmaxlinks | error;
686 clienthost: HOST '=' QSTRING ';'
688 char *sep = strchr($3, '@');
693 DupString(host, sep);
699 clientip: IP '=' QSTRING ';'
702 sep = strchr($3, '@');
713 clientusername: USERNAME '=' QSTRING ';'
718 clientclass: CLASS '=' QSTRING ';'
720 c_class = find_class($3);
723 clientpass: PASS '=' QSTRING ';'
728 clientmaxlinks: MAXLINKS '=' expr ';'
735 dconf = (struct DenyConf*) MyCalloc(1, sizeof(*dconf));
738 if (dconf->usermask || dconf->hostmask ||dconf->realmask) {
739 dconf->next = denyConfList;
740 denyConfList = dconf;
744 MyFree(dconf->usermask);
745 MyFree(dconf->hostmask);
746 MyFree(dconf->realmask);
747 MyFree(dconf->message);
749 parse_error("Kill block must match on at least one of username, host or realname");
753 killitems: killitem killitems | killitem;
754 killitem: killuhost | killreal | killusername | killreasonfile | killreason | error;
755 killuhost: HOST '=' QSTRING ';'
758 MyFree(dconf->hostmask);
759 MyFree(dconf->usermask);
760 if ((h = strchr($3, '@')) == NULL)
762 DupString(dconf->usermask, "*");
763 dconf->hostmask = $3;
768 DupString(dconf->hostmask, h);
769 dconf->usermask = $3;
771 ipmask_parse(dconf->hostmask, &dconf->address, &dconf->bits);
774 killusername: USERNAME '=' QSTRING ';'
776 MyFree(dconf->usermask);
777 dconf->usermask = $3;
780 killreal: REAL '=' QSTRING ';'
782 MyFree(dconf->realmask);
783 dconf->realmask = $3;
786 killreason: REASON '=' QSTRING ';'
788 dconf->flags &= ~DENY_FLAGS_FILE;
789 MyFree(dconf->message);
793 killreasonfile: TFILE '=' QSTRING ';'
795 dconf->flags |= DENY_FLAGS_FILE;
796 MyFree(dconf->message);
803 } '{' cruleitems '}' ';'
805 struct CRuleNode *node = NULL;
807 parse_error("Missing host in crule block");
808 else if (pass == NULL)
809 parse_error("Missing rule in crule block");
810 else if ((node = crule_parse(pass)) == NULL)
811 parse_error("Invalid rule '%s' in crule block", pass);
814 struct CRuleConf *p = (struct CRuleConf*) MyMalloc(sizeof(*p));
819 p->next = cruleConfList;
831 cruleitems: cruleitem cruleitems | cruleitem;
832 cruleitem: cruleserver | crulerule | cruleall | error;
834 cruleserver: SERVER '=' QSTRING ';'
841 crulerule: RULE '=' QSTRING ';'
847 cruleall: ALL '=' YES ';'
855 motdblock: MOTD '{' motditems '}' ';'
857 if (host != NULL && pass != NULL)
858 motd_add(host, pass);
864 motditems: motditem motditems | motditem;
865 motditem: motdhost | motdfile | error;
866 motdhost: HOST '=' QSTRING ';'
871 motdfile: TFILE '=' QSTRING ';'
876 featuresblock: FEATURES '{' featureitems '}' ';';
877 featureitems: featureitems featureitem | featureitem;
883 } '=' stringlist ';';
892 feature_set(NULL, (const char * const *)stringlist, stringno);
893 for (ii = 0; ii < stringno; ++ii)
894 MyFree(stringlist[ii]);
896 posextrastrings: /* empty */ | extrastrings;
897 extrastrings: extrastrings extrastring | extrastring;
900 if (stringno < MAX_STRINGS)
901 stringlist[stringno++] = $1;
906 quarantineblock: QUARANTINE '{' quarantineitems '}' ';';
907 quarantineitems: quarantineitems quarantineitem | quarantineitem;
908 quarantineitem: QSTRING '=' QSTRING ';'
910 struct qline *qconf = MyCalloc(1, sizeof(*qconf));
913 qconf->next = GlobalQuarantineList;
914 GlobalQuarantineList = qconf;
917 pseudoblock: PSEUDO QSTRING '{'
919 smap = MyCalloc(1, sizeof(struct s_map));
927 parse_error("Missing name in pseudo %s block", smap->command);
928 else if (!smap->services)
929 parse_error("Missing nick in pseudo %s block", smap->command);
932 if (valid && register_mapping(smap))
934 smap->next = GlobalServiceMapList;
935 GlobalServiceMapList = smap;
939 struct nick_host *nh, *next;
940 for (nh = smap->services; nh; nh = next)
946 MyFree(smap->command);
947 MyFree(smap->prepend);
953 pseudoitems: pseudoitem pseudoitems | pseudoitem;
954 pseudoitem: pseudoname | pseudoprepend | pseudonick | pseudoflags | error;
955 pseudoname: NAME '=' QSTRING ';'
960 pseudoprepend: PREPEND '=' QSTRING ';'
962 MyFree(smap->prepend);
965 pseudonick: NICK '=' QSTRING ';'
967 char *sep = strchr($3, '@');
970 size_t slen = strlen($3);
971 struct nick_host *nh = MyMalloc(sizeof(*nh) + slen);
972 memcpy(nh->nick, $3, slen + 1);
973 nh->nicklen = sep - $3;
974 nh->next = smap->services;
979 pseudoflags: FAST ';'
981 smap->flags |= SMAP_FAST;
984 iauthblock: IAUTH '{'
991 parse_error("Missing host in iauth block");
993 parse_error("Missing port in iauth block");
995 iauth_connect(host, port, pass, tconn, tping);
999 port = tconn = tping = 0;
1002 iauthitems: iauthitem iauthitems | iauthitem;
1003 iauthitem: iauthpass | iauthhost | iauthport | iauthconnfreq | iauthtimeout | error;
1004 iauthpass: PASS '=' QSTRING ';'
1009 iauthhost: HOST '=' QSTRING ';'
1014 iauthport: PORT '=' NUMBER ';'
1018 iauthconnfreq: CONNECTFREQ '=' timespec ';'
1022 iauthtimeout: TIMEOUT '=' timespec ';'