src/proto-p10.c

   1 /* proto-p10.c - IRC protocol output
   2  * Copyright 2000-2004 srvx Development Team
   3  *
   4  * This file is part of srvx.
   5  *
   6  * srvx 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.
  10  *
  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.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with srvx; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  19  */
  20
  21 #include "proto-common.c"
  22
  23 /* Full commands. */
  24 #define CMD_ACCOUNT             "ACCOUNT"
  25 #define CMD_ADMIN               "ADMIN"
  26 #define CMD_ASLL                "ASLL"
  27 #define CMD_AWAY                "AWAY"
  28 #define CMD_BURST               "BURST"
  29 #define CMD_CLEARMODE           "CLEARMODE"
  30 #define CMD_CLOSE               "CLOSE"
  31 #define CMD_CNOTICE             "CNOTICE"
  32 #define CMD_CONNECT             "CONNECT"
  33 #define CMD_CPRIVMSG            "CPRIVMSG"
  34 #define CMD_CREATE              "CREATE"
  35 #define CMD_DESTRUCT            "DESTRUCT"
  36 #define CMD_DESYNCH             "DESYNCH"
  37 #define CMD_DIE                 "DIE"
  38 #define CMD_DNS                 "DNS"
  39 #define CMD_EOB                 "END_OF_BURST"
  40 #define CMD_EOB_ACK             "EOB_ACK"
  41 #define CMD_ERROR               "ERROR"
  42 #define CMD_FAKEHOST            "FAKE"
  43 #define CMD_GET                 "GET"
  44 #define CMD_GLINE               "GLINE"
  45 #define CMD_HASH                "HASH"
  46 #define CMD_HELP                "HELP"
  47 #define CMD_INFO                "INFO"
  48 #define CMD_INVITE              "INVITE"
  49 #define CMD_ISON                "ISON"
  50 #define CMD_JOIN                "JOIN"
  51 #define CMD_JUPE                "JUPE"
  52 #define CMD_KICK                "KICK"
  53 #define CMD_KILL                "KILL"
  54 #define CMD_LINKS               "LINKS"
  55 #define CMD_LIST                "LIST"
  56 #define CMD_LUSERS              "LUSERS"
  57 #define CMD_MAP                 "MAP"
  58 #define CMD_MODE                "MODE"
  59 #define CMD_MOTD                "MOTD"
  60 #define CMD_NAMES               "NAMES"
  61 #define CMD_NICK                "NICK"
  62 #define CMD_NOTICE              "NOTICE"
  63 #define CMD_OPER                "OPER"
  64 #define CMD_OPMODE              "OPMODE"
  65 #define CMD_PART                "PART"
  66 #define CMD_PASS                "PASS"
  67 #define CMD_PING                "PING"
  68 #define CMD_PONG                "PONG"
  69 #define CMD_POST                "POST"
  70 #define CMD_PRIVMSG             "PRIVMSG"
  71 #define CMD_PRIVS               "PRIVS"
  72 #define CMD_PROTO               "PROTO"
  73 #define CMD_QUIT                "QUIT"
  74 #define CMD_REHASH              "REHASH"
  75 #define CMD_RESET               "RESET"
  76 #define CMD_RESTART             "RESTART"
  77 #define CMD_RPING               "RPING"
  78 #define CMD_RPONG               "RPONG"
  79 #define CMD_SERVER              "SERVER"
  80 #define CMD_SERVLIST            "SERVLIST"
  81 #define CMD_SERVSET             "SERVSET"
  82 #define CMD_SET                 "SET"
  83 #define CMD_SETTIME             "SETTIME"
  84 #define CMD_SILENCE             "SILENCE"
  85 #define CMD_SQUERY              "SQUERY"
  86 #define CMD_SQUIT               "SQUIT"
  87 #define CMD_STATS               "STATS"
  88 #define CMD_SVSNICK             "SVSNICK"
  89 #define CMD_TIME                "TIME"
  90 #define CMD_TOPIC               "TOPIC"
  91 #define CMD_TRACE               "TRACE"
  92 #define CMD_UPING               "UPING"
  93 #define CMD_USER                "USER"
  94 #define CMD_USERHOST            "USERHOST"
  95 #define CMD_USERIP              "USERIP"
  96 #define CMD_VERSION             "VERSION"
  97 #define CMD_WALLCHOPS           "WALLCHOPS"
  98 #define CMD_WALLOPS             "WALLOPS"
  99 #define CMD_WALLUSERS           "WALLUSERS"
 100 #define CMD_WALLVOICES          "WALLVOICES"
 101 #define CMD_WHO                 "WHO"
 102 #define CMD_WHOIS               "WHOIS"
 103 #define CMD_WHOWAS              "WHOWAS"
 104
 105 /* Tokenized commands. */
 106 #define TOK_ACCOUNT             "AC"
 107 #define TOK_ADMIN               "AD"
 108 #define TOK_ASLL                "LL"
 109 #define TOK_AWAY                "A"
 110 #define TOK_BURST               "B"
 111 #define TOK_CLEARMODE           "CM"
 112 #define TOK_CLOSE               "CLOSE"
 113 #define TOK_CNOTICE             "CN"
 114 #define TOK_CONNECT             "CO"
 115 #define TOK_CPRIVMSG            "CP"
 116 #define TOK_CREATE              "C"
 117 #define TOK_DESTRUCT            "DE"
 118 #define TOK_DESYNCH             "DS"
 119 #define TOK_DIE                 "DIE"
 120 #define TOK_DNS                 "DNS"
 121 #define TOK_EOB                 "EB"
 122 #define TOK_EOB_ACK             "EA"
 123 #define TOK_ERROR               "Y"
 124 #define TOK_FAKEHOST            "FA"
 125 #define TOK_GET                 "GET"
 126 #define TOK_GLINE               "GL"
 127 #define TOK_HASH                "HASH"
 128 #define TOK_HELP                "HELP"
 129 #define TOK_INFO                "F"
 130 #define TOK_INVITE              "I"
 131 #define TOK_ISON                "ISON"
 132 #define TOK_JOIN                "J"
 133 #define TOK_JUPE                "JU"
 134 #define TOK_KICK                "K"
 135 #define TOK_KILL                "D"
 136 #define TOK_LINKS               "LI"
 137 #define TOK_LIST                "LIST"
 138 #define TOK_LUSERS              "LU"
 139 #define TOK_MAP                 "MAP"
 140 #define TOK_MODE                "M"
 141 #define TOK_MOTD                "MO"
 142 #define TOK_NAMES               "E"
 143 #define TOK_NICK                "N"
 144 #define TOK_NOTICE              "O"
 145 #define TOK_OPER                "OPER"
 146 #define TOK_OPMODE              "OM"
 147 #define TOK_PART                "L"
 148 #define TOK_PASS                "PA"
 149 #define TOK_PING                "G"
 150 #define TOK_PONG                "Z"
 151 #define TOK_POST                "POST"
 152 #define TOK_PRIVMSG             "P"
 153 #define TOK_PRIVS               "PRIVS"
 154 #define TOK_PROTO               "PROTO"
 155 #define TOK_QUIT                "Q"
 156 #define TOK_REHASH              "REHASH"
 157 #define TOK_RESET               "RESET"
 158 #define TOK_RESTART             "RESTART"
 159 #define TOK_RPING               "RI"
 160 #define TOK_RPONG               "RO"
 161 #define TOK_SERVER              "S"
 162 #define TOK_SERVLIST            "SERVSET"
 163 #define TOK_SERVSET             "SERVSET"
 164 #define TOK_SET                 "SET"
 165 #define TOK_SETTIME             "SE"
 166 #define TOK_SILENCE             "U"
 167 #define TOK_SQUERY              "SQUERY"
 168 #define TOK_SQUIT               "SQ"
 169 #define TOK_STATS               "R"
 170 #define TOK_SVSNICK             "SN"
 171 #define TOK_TIME                "TI"
 172 #define TOK_TOPIC               "T"
 173 #define TOK_TRACE               "TR"
 174 #define TOK_UPING               "UP"
 175 #define TOK_USER                "USER"
 176 #define TOK_USERHOST            "USERHOST"
 177 #define TOK_USERIP              "USERIP"
 178 #define TOK_VERSION             "V"
 179 #define TOK_WALLCHOPS           "WC"
 180 #define TOK_WALLOPS             "WA"
 181 #define TOK_WALLUSERS           "WU"
 182 #define TOK_WALLVOICES          "WV"
 183 #define TOK_WHO                 "H"
 184 #define TOK_WHOIS               "W"
 185 #define TOK_WHOWAS              "X"
 186
 187 /* Protocol messages; aliased to full commands or tokens depending
 188    on compile-time configuration. ircu prefers tokens WITH THE
 189    EXCEPTION OF THE SERVER AND PASS COMMANDS, which cannot be
 190    tokenized, because clients' (ie. a linking server) commands are
 191    only checked against the full command list.
 192 */
 193 #if defined(ENABLE_TOKENS)
 194 #define TYPE(NAME)              TOK_ ## NAME
 195 #else /* !ENABLE_TOKENS */
 196 #define TYPE(NAME)              CMD_ ## NAME
 197 #endif /* ENABLE_TOKENS */
 198
 199 #define P10_ACCOUNT             TYPE(ACCOUNT)
 200 #define P10_ADMIN               TYPE(ADMIN)
 201 #define P10_ASLL                TYPE(ASLL)
 202 #define P10_AWAY                TYPE(AWAY)
 203 #define P10_BURST               TYPE(BURST)
 204 #define P10_CLEARMODE           TYPE(CLEARMODE)
 205 #define P10_CLOSE               TYPE(CLOSE)
 206 #define P10_CNOTICE             TYPE(CNOTICE)
 207 #define P10_CONNECT             TYPE(CONNECT)
 208 #define P10_CPRIVMSG            TYPE(CPRIVMSG)
 209 #define P10_CREATE              TYPE(CREATE)
 210 #define P10_DESTRUCT            TYPE(DESTRUCT)
 211 #define P10_DESYNCH             TYPE(DESYNCH)
 212 #define P10_DIE                 TYPE(DIE)
 213 #define P10_DNS                 TYPE(DNS)
 214 #define P10_EOB                 TYPE(EOB)
 215 #define P10_EOB_ACK             TYPE(EOB_ACK)
 216 #define P10_ERROR               TYPE(ERROR)
 217 #define P10_FAKEHOST            TYPE(FAKEHOST)
 218 #define P10_GET                 TYPE(GET)
 219 #define P10_GLINE               TYPE(GLINE)
 220 #define P10_HASH                TYPE(HASH)
 221 #define P10_HELP                TYPE(HELP)
 222 #define P10_INFO                TYPE(INFO)
 223 #define P10_INVITE              TYPE(INVITE)
 224 #define P10_ISON                TYPE(ISON)
 225 #define P10_JOIN                TYPE(JOIN)
 226 #define P10_JUPE                TYPE(JUPE)
 227 #define P10_KICK                TYPE(KICK)
 228 #define P10_KILL                TYPE(KILL)
 229 #define P10_LINKS               TYPE(LINKS)
 230 #define P10_LIST                TYPE(LIST)
 231 #define P10_LUSERS              TYPE(LUSERS)
 232 #define P10_MAP                 TYPE(MAP)
 233 #define P10_MODE                TYPE(MODE)
 234 #define P10_MOTD                TYPE(MOTD)
 235 #define P10_NAMES               TYPE(NAMES)
 236 #define P10_NICK                TYPE(NICK)
 237 #define P10_NOTICE              TYPE(NOTICE)
 238 #define P10_OPER                TYPE(OPER)
 239 #define P10_OPMODE              TYPE(OPMODE)
 240 #define P10_PART                TYPE(PART)
 241 #define P10_PASS                CMD_PASS
 242 #define P10_PING                TYPE(PING)
 243 #define P10_PONG                TYPE(PONG)
 244 #define P10_POST                TYPE(POST)
 245 #define P10_PRIVMSG             TYPE(PRIVMSG)
 246 #define P10_PRIVS               TYPE(PRIVS)
 247 #define P10_PROTO               TYPE(PROTO)
 248 #define P10_QUIT                TYPE(QUIT)
 249 #define P10_REHASH              TYPE(REHASH)
 250 #define P10_RESET               TYPE(RESET)
 251 #define P10_RESTART             TYPE(RESTART)
 252 #define P10_RPING               TYPE(RPING)
 253 #define P10_RPONG               TYPE(RPONG)
 254 #define P10_SERVER              CMD_SERVER
 255 #define P10_SERVLIST            TYPE(SERVLIST)
 256 #define P10_SERVSET             TYPE(SERVSET)
 257 #define P10_SET                 TYPE(SET)
 258 #define P10_SETTIME             TYPE(SETTIME)
 259 #define P10_SILENCE             TYPE(SILENCE)
 260 #define P10_SQUERY              TYPE(SQUERY)
 261 #define P10_SQUIT               TYPE(SQUIT)
 262 #define P10_STATS               TYPE(STATS)
 263 #define P10_SVSNICK             TYPE(SVSNICK)
 264 #define P10_TIME                TYPE(TIME)
 265 #define P10_TOPIC               TYPE(TOPIC)
 266 #define P10_TRACE               TYPE(TRACE)
 267 #define P10_UPING               TYPE(UPING)
 268 #define P10_USER                TYPE(USER)
 269 #define P10_USERHOST            TYPE(USERHOST)
 270 #define P10_USERIP              TYPE(USERIP)
 271 #define P10_VERSION             TYPE(VERSION)
 272 #define P10_WALLCHOPS           TYPE(WALLCHOPS)
 273 #define P10_WALLOPS             TYPE(WALLOPS)
 274 #define P10_WALLUSERS           TYPE(WALLUSERS)
 275 #define P10_WALLVOICES          TYPE(WALLVOICES)
 276 #define P10_WHO                 TYPE(WHO)
 277 #define P10_WHOIS               TYPE(WHOIS)
 278 #define P10_WHOWAS              TYPE(WHOWAS)
 279
 280 /* Servers claiming to have a boot or link time before PREHISTORY
 281  * trigger errors to the log.  We hope no server has been running
 282  * constantly since September 1994.  :)
 283  */
 284 #define PREHISTORY 780000000
 285
 286 static struct server *servers_num[64*64];
 287 static privmsg_func_t *privmsg_funcs;
 288 static unsigned int num_privmsg_funcs;
 289 static privmsg_func_t *notice_funcs;
 290 static unsigned int num_notice_funcs;
 291 static struct dict *unbursted_channels;
 292 static char *his_servername;
 293 static char *his_servercomment;
 294
 295 static struct userNode *AddUser(struct server* uplink, const char *nick, const char *ident, const char *hostname, const char *modes, const char *numeric, const char *userinfo, time_t timestamp, const char *realip);
 296
 297 extern int off_channel;
 298
 299 /* Numerics can be XYY, XYYY, or XXYYY; with X's identifying the
 300  * server and Y's indentifying the client on that server. */
 301 struct server*
 302 GetServerN(const char *numeric)
 303 {
 304     switch (strlen(numeric)) {
 305     default:
 306         return servers_num[base64toint(numeric, 2)];
 307     case 4:
 308     case 3:
 309     case 1:
 310         return servers_num[base64toint(numeric, 1)];
 311     case 0:
 312         return NULL;
 313     }
 314 }
 315
 316 struct userNode*
 317 GetUserN(const char *numeric) /* using numeric */
 318 {
 319     struct userNode *un;
 320     struct server *s;
 321     int n, slen, ulen;
 322
 323     switch (strlen(numeric)) {
 324     default:
 325         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too long!", numeric);
 326         return NULL;
 327     case 5: slen = 2; ulen = 3; break;
 328     case 4: slen = 1; ulen = 3; break;
 329     case 3: slen = 1; ulen = 2; break;
 330     case 2: case 1: case 0:
 331         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too short!", numeric);
 332         return NULL;
 333     }
 334     if (!(s = servers_num[base64toint(numeric, slen)])) {
 335         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): couldn't find server (len=%d)!", numeric, slen);
 336         return NULL;
 337     }
 338     n = base64toint(numeric+slen, ulen) & s->num_mask;
 339     if (!(un = s->users[n])) {
 340         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s) couldn't find user!", numeric);
 341     }
 342     return un;
 343 }
 344
 345 static void
 346 privmsg_user_helper(struct userNode *un, void *data)
 347 {
 348     struct privmsg_desc *pd = data;
 349     unsigned int num = un->num_local;
 350     if (!pd->is_notice) {
 351         if ((num < num_privmsg_funcs) && privmsg_funcs[num]) {
 352             privmsg_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 353         }
 354     } else {
 355         if ((num < num_notice_funcs) && notice_funcs[num]) {
 356             notice_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 357         }
 358     }
 359 }
 360
 361 void
 362 irc_server(struct server *srv)
 363 {
 364     char extranum[COMBO_NUMERIC_LEN+1];
 365
 366     inttobase64(extranum, srv->num_mask, (srv->numeric[1] || (srv->num_mask >= 64*64)) ? 3 : 2);
 367     if (srv == self) {
 368         /* The +s, ignored by Run's ircu, means "service" to Undernet's ircu */
 369         putsock(P10_SERVER " %s %d %li %li J10 %s%s +s :%s",
 370                 srv->name, srv->hops+1, srv->boot, srv->link, srv->numeric, extranum, srv->description);
 371     } else {
 372         putsock("%s " P10_SERVER " %s %d %li %li %c10 %s%s +s :%s",
 373                 self->numeric, srv->name, srv->hops+1, srv->boot, srv->link, (srv->self_burst ? 'J' : 'P'), srv->numeric, extranum, srv->description);
 374     }
 375 }
 376
 377 void
 378 irc_user(struct userNode *user)
 379 {
 380     char b64ip[7];
 381     if (!user)
 382         return;
 383     inttobase64(b64ip, ntohl(user->ip.s_addr), 6);
 384     if (user->modes) {
 385         int modelen;
 386         char modes[32];
 387
 388         modelen = 0;
 389         if (IsOper(user))
 390             modes[modelen++] = 'o';
 391         if (IsInvisible(user))
 392             modes[modelen++] = 'i';
 393         if (IsWallOp(user))
 394             modes[modelen++] = 'w';
 395         if (IsService(user))
 396             modes[modelen++] = 'k';
 397         if (IsServNotice(user))
 398             modes[modelen++] = 's';
 399         if (IsDeaf(user))
 400             modes[modelen++] = 'd';
 401         if (IsGlobal(user))
 402             modes[modelen++] = 'g';
 403         // sethost - reed/apples
 404         // if (IsHelperIrcu(user))
 405         if (IsSetHost(user))
 406             modes[modelen++] = 'h';
 407         if (IsFakeHost(user))
 408             modes[modelen++] = 'f';
 409         if (IsHiddenHost(user))
 410             modes[modelen++] = 'x';
 411         modes[modelen] = 0;
 412
 413         /* we don't need to put the + in modes because it's in the format string. */
 414         putsock("%s " P10_NICK " %s %d %li %s %s +%s %s %s :%s",
 415                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, modes, b64ip, user->numeric, user->info);
 416     } else {
 417         putsock("%s " P10_NICK " %s %d %li %s %s %s %s :%s",
 418                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, b64ip, user->numeric, user->info);
 419     }
 420 }
 421
 422 void
 423 irc_account(struct userNode *user, const char *stamp)
 424 {
 425     putsock("%s " P10_ACCOUNT " %s %s", self->numeric, user->numeric, stamp);
 426 }
 427
 428 void
 429 irc_fakehost(struct userNode *user, const char *host)
 430 {
 431     putsock("%s " P10_FAKEHOST " %s %s", self->numeric, user->numeric, host);
 432 }
 433
 434 void
 435 irc_regnick(UNUSED_ARG(struct userNode *user))
 436 {
 437     /* no operation here */
 438 }
 439
 440 void
 441 irc_nick(struct userNode *user, UNUSED_ARG(const char *old_nick))
 442 {
 443     putsock("%s " P10_NICK " %s "FMT_TIME_T, user->numeric, user->nick, now);
 444 }
 445
 446 void
 447 irc_fetchtopic(struct userNode *from, const char *to)
 448 {
 449     if (!from || !to)
 450         return;
 451     putsock("%s " P10_TOPIC " %s", from->numeric, to);
 452 }
 453
 454 void
 455 irc_squit(struct server *srv, const char *message, const char *service_message)
 456 {
 457     if (!service_message)
 458         service_message = message;
 459
 460     /* Are we leaving the network? */
 461     if (srv == self && cManager.uplink->state == CONNECTED) {
 462         unsigned int i;
 463
 464         /* Quit all clients linked to me. */
 465         for (i = 0; i <= self->num_mask; i++) {
 466             if (!self->users[i])
 467                 continue;
 468             irc_quit(self->users[i], service_message);
 469         }
 470     }
 471
 472     putsock("%s " P10_SQUIT " %s %d :%s", self->numeric, srv->name, 0, message);
 473
 474     if (srv == self) {
 475         /* Force a reconnect to the currently selected server. */
 476         cManager.uplink->tries = 0;
 477         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", message);
 478         close_socket();
 479     }
 480 }
 481
 482 void
 483 irc_wallchops(struct userNode *from, const char *to, const char *message)
 484 {
 485     putsock("%s " P10_WALLCHOPS " %s :%s", from->numeric, to, message);
 486 }
 487
 488 void
 489 irc_notice(struct userNode *from, const char *to, const char *message)
 490 {
 491     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to, message);
 492 }
 493
 494 void
 495 irc_notice_user(struct userNode *from, struct userNode *to, const char *message)
 496 {
 497     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to->numeric, message);
 498 }
 499
 500 void
 501 irc_privmsg(struct userNode *from, const char *to, const char *message)
 502 {
 503     putsock("%s " P10_PRIVMSG " %s :%s", from->numeric, to, message);
 504 }
 505
 506 void
 507 irc_eob(void)
 508 {
 509     putsock("%s " P10_EOB, self->numeric);
 510 }
 511
 512 void
 513 irc_eob_ack(void)
 514 {
 515     putsock("%s " P10_EOB_ACK, self->numeric);
 516 }
 517
 518 void
 519 irc_ping(const char *payload)
 520 {
 521     putsock("%s " P10_PING " :%s", self->numeric, payload);
 522 }
 523
 524 void
 525 irc_pong(const char *who, const char *data)
 526 {
 527     putsock("%s " P10_PONG " %s :%s", self->numeric, who, data);
 528 }
 529
 530 void
 531 irc_pass(const char *passwd)
 532 {
 533     putsock(P10_PASS " :%s", passwd);
 534 }
 535
 536 void
 537 irc_introduce(const char *passwd)
 538 {
 539     void timed_send_ping(void *data);
 540
 541     self->self_burst = self->burst = 1;
 542     irc_pass(passwd);
 543     irc_server(self);
 544     burst_length = 0;
 545     timeq_add(now + ping_freq, timed_send_ping, 0);
 546 }
 547
 548 void
 549 irc_gline(struct server *srv, struct gline *gline)
 550 {
 551     putsock("%s " P10_GLINE " %s +%s %ld :<%s> %s",
 552             self->numeric, (srv ? srv->numeric : "*"), gline->target, gline->expires-now, gline->issuer, gline->reason);
 553 }
 554
 555 void
 556 irc_settime(const char *srv_name_mask, time_t new_time)
 557 {
 558     ioset_set_time(new_time);
 559     if (!strcmp(srv_name_mask, "*"))
 560         srv_name_mask = "";
 561     putsock("%s " P10_SETTIME " " FMT_TIME_T " %s", self->numeric, new_time, srv_name_mask);
 562 }
 563
 564 void
 565 irc_ungline(const char *mask)
 566 {
 567     putsock("%s " P10_GLINE " * -%s", self->numeric, mask);
 568 }
 569
 570 static void
 571 irc_burst(struct chanNode *chan)
 572 {
 573     char burst_line[512];
 574     int pos, base_len, len;
 575     struct modeNode *mn;
 576     struct banNode *bn;
 577     long last_mode=-1;
 578     unsigned int n;
 579
 580     base_len = sprintf(burst_line, "%s " P10_BURST " %s " FMT_TIME_T " ",
 581                        self->numeric, chan->name, chan->timestamp);
 582     len = irc_make_chanmode(chan, burst_line+base_len);
 583     pos = base_len + len;
 584     if (len)
 585         burst_line[pos++] = ' ';
 586
 587     /* dump the users */
 588     for (n=0; n<chan->members.used; n++) {
 589         mn = chan->members.list[n];
 590         if (pos > 500) {
 591             burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 592             putsock("%s", burst_line);
 593             pos = base_len;
 594             last_mode = -1;
 595         }
 596         memcpy(burst_line+pos, mn->user->numeric, strlen(mn->user->numeric));
 597         pos += strlen(mn->user->numeric);
 598         if (mn->modes && (mn->modes != last_mode)) {
 599             last_mode = mn->modes;
 600             burst_line[pos++] = ':';
 601             if (last_mode & MODE_CHANOP)
 602                 burst_line[pos++] = 'o';
 603             if (last_mode & MODE_VOICE)
 604                 burst_line[pos++] = 'v';
 605         }
 606         if ((n+1)<chan->members.used)
 607             burst_line[pos++] = ',';
 608     }
 609     if (chan->banlist.used) {
 610         /* dump the bans */
 611         if (pos+2+strlen(chan->banlist.list[0]->ban) > 505) {
 612             burst_line[pos-1] = 0;
 613             putsock("%s", burst_line);
 614             pos = base_len;
 615         } else {
 616             burst_line[pos++] = ' ';
 617         }
 618
 619         burst_line[pos++] = ':';
 620         burst_line[pos++] = '%';
 621         base_len = pos;
 622         for (n=0; n<chan->banlist.used; n++) {
 623             bn = chan->banlist.list[n];
 624             len = strlen(bn->ban);
 625             if (pos+len+1 > 510) {
 626                 burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 627                 putsock("%s", burst_line);
 628                 pos = base_len;
 629             }
 630             memcpy(burst_line+pos, bn->ban, len);
 631             pos += len;
 632             burst_line[pos++] = ' ';
 633         }
 634     }
 635     /* print the last line */
 636     burst_line[pos] = 0;
 637     putsock("%s", burst_line);
 638 }
 639
 640 void
 641 irc_quit(struct userNode *user, const char *message)
 642 {
 643     putsock("%s " P10_QUIT " :%s", user->numeric, message);
 644 }
 645
 646 void
 647 irc_error(const char *to, const char *message)
 648 {
 649     if (to) {
 650         putsock("%s " P10_ERROR " :%s", to, message);
 651     } else {
 652         putsock(":%s " P10_ERROR " :%s", self->name, message);
 653     }
 654 }
 655
 656 void
 657 irc_kill(struct userNode *from, struct userNode *target, const char *message)
 658 {
 659     if (from) {
 660         putsock("%s " P10_KILL " %s :%s!%s (%s)",
 661                 from->numeric, target->numeric, self->name, from->nick, message);
 662     } else {
 663         putsock("%s " P10_KILL " %s :%s (%s)",
 664                 self->numeric, target->numeric, self->name, message);
 665     }
 666 }
 667
 668 void
 669 irc_mode(struct userNode *from, struct chanNode *target, const char *modes)
 670 {
 671     putsock("%s " P10_MODE " %s %s "FMT_TIME_T,
 672             (from ? from->numeric : self->numeric),
 673             target->name, modes, target->timestamp);
 674 }
 675
 676 void
 677 irc_invite(struct userNode *from, struct userNode *who, struct chanNode *to)
 678 {
 679     putsock("%s " P10_INVITE " %s %s", from->numeric, who->nick, to->name);
 680 }
 681
 682 void
 683 irc_join(struct userNode *who, struct chanNode *what)
 684 {
 685     if (what->members.used == 1) {
 686         putsock("%s " P10_CREATE " %s %lu",
 687                 who->numeric, what->name, what->timestamp);
 688     } else {
 689         putsock("%s " P10_JOIN " %s %lu", who->numeric, what->name, what->timestamp);
 690     }
 691 }
 692
 693 void
 694 irc_kick(struct userNode *who, struct userNode *target, struct chanNode *channel, const char *msg)
 695 {
 696     const char *numeric;
 697     struct modeNode *mn = GetUserMode(channel, who);
 698     numeric = ((mn && (mn->modes & MODE_CHANOP)) || off_channel) ? who->numeric : self->numeric;
 699     putsock("%s " P10_KICK " %s %s :%s",
 700             numeric, channel->name, target->numeric, msg);
 701 }
 702
 703 void
 704 irc_stats(struct userNode *from, struct server *target, char type)
 705 {
 706     putsock("%s " P10_STATS " %c :%s", from->numeric, type, target->numeric);
 707 }
 708
 709 void
 710 irc_svsnick(struct userNode *from, struct userNode *target, const char *newnick)
 711 {
 712     putsock("%s " P10_SVSNICK " %s %s "FMT_TIME_T, from->uplink->numeric, target->numeric, newnick, now);
 713 }
 714
 715 void
 716 irc_part(struct userNode *who, struct chanNode *what, const char *reason)
 717 {
 718     if (reason) {
 719         putsock("%s " P10_PART " %s :%s", who->numeric, what->name, reason);
 720     } else {
 721         putsock("%s " P10_PART " %s", who->numeric, what->name);
 722     }
 723 }
 724
 725 void
 726 irc_topic(struct userNode *who, struct chanNode *what, const char *topic)
 727 {
 728     putsock("%s " P10_TOPIC " %s :%s", who->numeric, what->name, topic);
 729 }
 730
 731 void
 732 irc_raw(const char *what)
 733 {
 734     putsock("%s", what);
 735 }
 736
 737 void
 738 irc_numeric(struct userNode *user, unsigned int num, const char *format, ...)
 739 {
 740     va_list arg_list;
 741     char buffer[MAXLEN];
 742     va_start(arg_list, format);
 743     vsnprintf(buffer, MAXLEN-2, format, arg_list);
 744     buffer[MAXLEN-1] = 0;
 745     putsock(":%s %03d %s %s", self->name, num, user->nick, buffer);
 746 }
 747
 748 static void send_burst(void);
 749
 750 static void
 751 change_nicklen(int new_nicklen)
 752 {
 753     unsigned int nn;
 754     char new_nick[NICKLEN+1];
 755     struct userNode *user;
 756
 757     nicklen = new_nicklen;
 758     /* fix up any users we have here */
 759     for (nn=0; nn<=self->num_mask; nn++) {
 760         if (!(user = self->users[nn]))
 761             continue;
 762         safestrncpy(new_nick, user->nick, sizeof(new_nick));
 763         new_nick[nicklen] = 0;
 764         NickChange(user, new_nick, 1);
 765     }
 766 }
 767
 768 static CMD_FUNC(cmd_whois)
 769 {
 770     struct userNode *from;
 771     struct userNode *who;
 772
 773     if (argc < 3)
 774         return 0;
 775     if (!(from = GetUserH(origin))) {
 776         log_module(MAIN_LOG, LOG_ERROR, "Could not find WHOIS origin user %s", origin);
 777         return 0;
 778     }
 779     if(!(who = GetUserH(argv[2]))) {
 780         irc_numeric(from, ERR_NOSUCHNICK, "%s@%s :No such nick", argv[2], self->name);
 781         return 1;
 782     }
 783     if (IsHiddenHost(who) && !IsOper(from)) {
 784         /* Just stay quiet. */
 785         return 1;
 786     }
 787     irc_numeric(from, RPL_WHOISUSER, "%s %s %s * :%s", who->nick, who->ident, who->hostname, who->info);
 788     if (his_servername && his_servercomment)
 789       irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, his_servername, his_servercomment);
 790     else
 791     irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, who->uplink->name, who->uplink->description);
 792
 793     if (IsOper(who)) {
 794         irc_numeric(from, RPL_WHOISOPERATOR, "%s :is a megalomaniacal power hungry tyrant", who->nick);
 795     }
 796     irc_numeric(from, RPL_ENDOFWHOIS, "%s :End of /WHOIS list", who->nick);
 797     return 1;
 798 }
 799
 800 static CMD_FUNC(cmd_server)
 801 {
 802     struct server *srv;
 803     const char *str;
 804
 805     if (argc < 8)
 806         return 0;
 807     if (origin) {
 808         /* another server introduced us */
 809         srv = AddServer(GetServerH(origin), argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
 810         if (!srv)
 811             return 0;
 812         srv->self_burst = argv[5][0] == 'J';
 813         srv->burst = 1;
 814     } else {
 815         /* this must be our uplink */
 816         srv = self->uplink = AddServer(self, argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
 817         if (!srv)
 818             return 0;
 819         srv->self_burst = argv[5][0] == 'J';
 820         srv->burst = 1;
 821         if ((argv[7][0] == '+') && !force_n2k) {
 822             log_module(MAIN_LOG, LOG_WARNING, "Got Undernet-style SERVER message but \"force_n2k\" not on.");
 823         }
 824         send_burst();
 825     }
 826
 827     /* Fix up our timestamps if necessary. */
 828     if (srv->boot <= PREHISTORY) {
 829         /* Server from the mists of time.. */
 830         if (srv->hops == 1) {
 831             log_module(MAIN_LOG, LOG_ERROR, "Server %s claims to have booted at time "FMT_TIME_T".  This is absurd.", srv->name, srv->boot);
 832         }
 833     } else if ((str = conf_get_data("server/reliable_clock", RECDB_QSTRING))
 834                && enabled_string(str)) {
 835         /* If we have a reliable clock, we just keep our current time. */
 836     } else {
 837         if (srv->boot <= self->boot) {
 838             /* The other server is older than us.  Accept their timestamp.
 839              * Alternately, we are same age, but we accept their time
 840              * since we are linking to them. */
 841             self->boot = srv->boot;
 842             ioset_set_time(srv->link);
 843         }
 844     }
 845     if (srv == self->uplink) {
 846         extern time_t burst_begin;
 847         burst_begin = now;
 848     }
 849     return 1;
 850 }
 851
 852 static CMD_FUNC(cmd_eob)
 853 {
 854     struct server *sender;
 855     dict_iterator_t it;
 856     unsigned int ii;
 857
 858     if (!(sender = GetServerH(origin)))
 859         return 0;
 860     if (sender == self->uplink) {
 861         cManager.uplink->state = CONNECTED;
 862         for (it = dict_first(unbursted_channels); it; it = iter_next(it))
 863             irc_burst(iter_data(it));
 864         dict_delete(unbursted_channels);
 865         unbursted_channels = NULL;
 866         irc_eob();
 867         irc_eob_ack();
 868     }
 869     sender->self_burst = 0;
 870     recalc_bursts(sender);
 871     for (ii=0; ii<slf_used; ii++)
 872         slf_list[ii](sender);
 873     return 1;
 874 }
 875
 876 static CMD_FUNC(cmd_eob_ack)
 877 {
 878     extern time_t burst_begin;
 879
 880     if (GetServerH(origin) == self->uplink) {
 881         burst_length = now - burst_begin;
 882         self->self_burst = self->burst = 0;
 883     }
 884     cManager.uplink->state = CONNECTED;
 885     return 1;
 886 }
 887
 888 static CMD_FUNC(cmd_ping)
 889 {
 890     struct server *srv;
 891     struct userNode *un;
 892
 893     if(argc > 3)
 894         irc_pong(argv[2], argv[1]);
 895     else if ((srv = GetServerH(origin)))
 896         irc_pong(self->name, srv->numeric);
 897     else if ((un = GetUserH(origin)))
 898         irc_pong(self->name, un->numeric);
 899     else
 900         irc_pong(self->name, origin);
 901
 902     timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
 903     timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
 904     timeq_add(now + ping_freq, timed_send_ping, 0);
 905     received_ping();
 906     return 1;
 907 }
 908
 909 static CMD_FUNC(cmd_error_nick)
 910 {
 911     /* Go back to original IRC length .. and try to reconnect :/ */
 912     change_nicklen(9);
 913     irc_squit(self, "Got erroneous nickname, truncating nicks.", NULL);
 914     return 1;
 915 }
 916
 917 struct create_desc {
 918     struct userNode *user;
 919     time_t when;
 920 };
 921
 922 static void
 923 join_helper(struct chanNode *chan, void *data)
 924 {
 925     struct create_desc *cd = data;
 926     AddChannelUser(cd->user, chan);
 927 }
 928
 929 static void
 930 create_helper(char *name, void *data)
 931 {
 932     struct create_desc *cd = data;
 933
 934     if (!strcmp(name, "0")) {
 935         while (cd->user->channels.used > 0)
 936             DelChannelUser(cd->user, cd->user->channels.list[0]->channel, 0, 0);
 937         return;
 938     }
 939
 940     AddChannelUser(cd->user, AddChannel(name, cd->when, NULL, NULL));
 941 }
 942
 943 static CMD_FUNC(cmd_create)
 944 {
 945     struct create_desc cd;
 946     struct userNode *user;
 947
 948     if ((argc < 3) || !(user = GetUserH(origin)))
 949         return 0;
 950     cd.user = user;
 951     cd.when = atoi(argv[2]);
 952     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
 953     return 1;
 954 }
 955
 956 static CMD_FUNC(cmd_join)
 957 {
 958     struct create_desc cd;
 959
 960     if (!(cd.user = GetUserH(origin)))
 961         return 0;
 962     if (argc < 2)
 963         return 0;
 964     else if (argc < 3)
 965         cd.when = now;
 966     else
 967         cd.when = atoi(argv[2]);
 968     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
 969     return 1;
 970 }
 971
 972 static CMD_FUNC(cmd_pong)
 973 {
 974     if (argc < 3)
 975         return 0;
 976     if (!strcmp(argv[2], self->name)) {
 977         timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
 978         timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
 979         timeq_add(now + ping_freq, timed_send_ping, 0);
 980         received_ping();
 981     }
 982     return 1;
 983 }
 984
 985 static CMD_FUNC(cmd_nick)
 986 {
 987     struct userNode *user;
 988     if ((user = GetUserH(origin))) {
 989         /* nick change (since the source is a user numeric) */
 990         if (argc < 2)
 991             return 0;
 992         NickChange(user, argv[1], 1);
 993     } else {
 994         struct server *serv;
 995         char modes[MAXLEN];
 996         /* new nick */
 997         if (argc < 9)
 998             return 0;
 999         serv = GetServerH(origin);
1000         if (argc > 9)
1001             unsplit_string(argv+6, argc-9, modes);
1002         else
1003             strcpy(modes, "+");
1004         AddUser(serv, argv[1], argv[4], argv[5], modes, argv[argc-2], argv[argc-1], atoi(argv[3]), argv[argc-3]);
1005     }
1006     return 1;
1007 }
1008
1009 static CMD_FUNC(cmd_account)
1010 {
1011     struct userNode *user;
1012
1013     if ((argc < 3) || !origin || !GetServerH(origin))
1014         return 0; /* Origin must be server. */
1015     user = GetUserN(argv[1]);
1016     if (!user)
1017         return 1; /* A QUIT probably passed the ACCOUNT. */
1018     call_account_func(user, argv[2]);
1019     return 1;
1020 }
1021
1022 static CMD_FUNC(cmd_fakehost)
1023 {
1024     struct userNode *user;
1025
1026     if ((argc < 3) || !origin || !GetServerH(origin))
1027         return 0;
1028     if (!(user = GetUserN(argv[1])))
1029         return 1;
1030     assign_fakehost(user, argv[2], 0);
1031     return 1;
1032 }
1033
1034 static CMD_FUNC(cmd_burst)
1035 {
1036     extern int rel_age;
1037     char modes[MAXLEN], *members = "", *banlist = NULL;
1038     unsigned int next = 3, res = 1;
1039     struct chanNode *cNode;
1040     struct userNode *un;
1041     struct modeNode *mNode;
1042     long mode;
1043     char *user, *end, sep;
1044     time_t in_timestamp;
1045
1046     if (argc < 3)
1047         return 0;
1048     modes[0] = 0;
1049     while (next < argc) {
1050         switch (argv[next][0]) {
1051         case '+': {
1052             const char *pos;
1053             int n_modes;
1054             for (pos=argv[next], n_modes = 1; *pos; pos++)
1055                 if ((*pos == 'k') || (*pos == 'l'))
1056                     n_modes++;
1057             unsplit_string(argv+next, n_modes, modes);
1058             next += n_modes;
1059             break;
1060         }
1061         case '%': banlist = argv[next++]+1; break;
1062         default: members = argv[next++]; break;
1063         }
1064     }
1065
1066     in_timestamp = atoi(argv[2]);
1067     if ((cNode = dict_find(unbursted_channels, argv[1], NULL))) {
1068         cNode->timestamp = in_timestamp;
1069         dict_remove(unbursted_channels, cNode->name);
1070         irc_burst(cNode);
1071     }
1072     cNode = AddChannel(argv[1], in_timestamp, modes, banlist);
1073
1074     /* Burst channel members in now. */
1075     for (user = members, sep = *members, mode = 0; sep; user = end) {
1076         for (end = user + 3; isalnum(*end) || *end == '[' || *end == ']'; end++) ;
1077         sep = *end++; end[-1] = 0;
1078         if (sep == ':') {
1079             mode = 0;
1080             while ((sep = *end++)) {
1081                 if (sep == 'o')
1082                     mode |= MODE_CHANOP;
1083                 else if (sep == 'v')
1084                     mode |= MODE_VOICE;
1085                 else
1086                     break;
1087             }
1088             if (rel_age < 0)
1089                 mode = 0;
1090         }
1091         if (!(un = GetUserN(user))) {
1092             res = 0;
1093             continue;
1094         }
1095         if ((mNode = AddChannelUser(un, cNode)))
1096             mNode->modes = mode;
1097     }
1098
1099     return res;
1100 }
1101
1102 static CMD_FUNC(cmd_mode)
1103 {
1104     struct chanNode *cn;
1105     struct userNode *un;
1106     char *sethost; // sethost - reed/apples
1107     int i; // sethost - reed/apples
1108
1109     if (argc < 3)
1110         return 0;
1111     if (!IsChannelName(argv[1])) {
1112         un = GetUserH(argv[1]);
1113         if (!un) {
1114             log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s whose mode is changing.", argv[1]);
1115             return 0;
1116         }
1117         // sethost - reed/apples
1118         if (argc == 3)
1119         mod_usermode(un, argv[2]);
1120         else {
1121           sethost = malloc(strlen(argv[2]) + 1 + strlen(argv[3]) + 1);
1122           i = 0;
1123           while((sethost[i++] = *argv[2]++));
1124           i--;
1125          sethost[i++] = ' ';
1126           while((sethost[i++] = *argv[3]++));
1127           mod_usermode(un, sethost); // sethost - reed/apples
1128         }
1129
1130         return 1;
1131     }
1132
1133     if (!(cn = GetChannel(argv[1]))) {
1134         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1135         return 0;
1136     }
1137     if ((un = GetUserH(origin))) {
1138         struct modeNode *mn;
1139         /* Update idle time for person setting the mode */
1140         if ((mn = GetUserMode(cn, un)))
1141             mn->idle_since = now;
1142     } else {
1143         /* If it came from a server, reset timestamp to re-sync. */
1144         cn->timestamp = atoi(argv[argc-1]);
1145     }
1146
1147     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER|(un ? MC_NOTIFY : 0));
1148 }
1149
1150 static CMD_FUNC(cmd_opmode)
1151 {
1152     struct chanNode *cn;
1153     struct userNode *un;
1154
1155     if (argc < 3)
1156         return 0;
1157
1158     if (!(cn = GetChannel(argv[1]))) {
1159         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1160         return 0;
1161     }
1162     if (!(un = GetUserH(origin))) {
1163         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting OPMODE.", origin);
1164         return 0;
1165     }
1166     if (!IsOper(un)) {
1167         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using OPMODE.", un->nick);
1168         return 0;
1169     }
1170
1171     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER); /* do NOT announce opmode locally */
1172 }
1173
1174 static int clear_chanmode(struct chanNode *channel, const char *modes);
1175
1176 static CMD_FUNC(cmd_clearmode)
1177 {
1178     struct chanNode *cn;
1179     struct userNode *un;
1180
1181     if (argc < 3)
1182         return 0;
1183
1184     if (!(cn = GetChannel(argv[1]))) {
1185         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1186         return 0;
1187     }
1188     if (!(un = GetUserH(origin))) {
1189         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting CLEARMODE.", origin);
1190         return 0;
1191     }
1192     if (!IsOper(un)) {
1193         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using CLEARMODE.", un->nick);
1194         return 0;
1195     }
1196
1197     return clear_chanmode(cn, argv[2]);
1198 }
1199
1200 static CMD_FUNC(cmd_topic)
1201 {
1202     struct chanNode *cn;
1203     time_t chan_ts, topic_ts;
1204
1205     if (argc < 3)
1206         return 0;
1207     if (!(cn = GetChannel(argv[1]))) {
1208         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose topic is being set", argv[1]);
1209         return 0;
1210     }
1211     if (argc >= 5) {
1212         /* Looks like an Asuka style topic burst. */
1213         chan_ts = atoi(argv[2]);
1214         topic_ts = atoi(argv[3]);
1215     } else {
1216         chan_ts = cn->timestamp;
1217         topic_ts = now;
1218     }
1219     SetChannelTopic(cn, GetUserH(origin), argv[argc-1], 0);
1220     cn->topic_time = topic_ts;
1221     return 1;
1222 }
1223
1224 static CMD_FUNC(cmd_num_topic)
1225 {
1226     struct chanNode *cn;
1227
1228     if (!argv[0])
1229         return 0; /* huh? */
1230     if (argv[2]) {
1231         cn = GetChannel(argv[2]);
1232         if (!cn) {
1233             log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s in topic reply", argv[2]);
1234             return 0;
1235         }
1236     } else
1237         return 0;
1238
1239     switch (atoi(argv[0])) {
1240     case 331:
1241         cn->topic_time = 0;
1242         break;  /* no topic */
1243     case 332:
1244         if (argc < 4)
1245             return 0;
1246         safestrncpy(cn->topic, unsplit_string(argv+3, argc-3, NULL), sizeof(cn->topic));
1247         break;
1248     case 333:
1249         if (argc < 5)
1250             return 0;
1251         safestrncpy(cn->topic_nick, argv[3], sizeof(cn->topic_nick));
1252         cn->topic_time = atoi(argv[4]);
1253         break;
1254     default:
1255         return 0; /* should never happen */
1256     }
1257     return 1;
1258 }
1259
1260 static CMD_FUNC(cmd_num_gline)
1261 {
1262     if (argc < 6)
1263         return 0;
1264     gline_add(origin, argv[3], atoi(argv[4])-now, argv[5], now, 0);
1265     return 1;
1266 }
1267
1268 static CMD_FUNC(cmd_quit)
1269 {
1270     struct userNode *user;
1271     if (argc < 2)
1272         return 0;
1273     /* Sometimes we get a KILL then a QUIT or the like, so we don't want to
1274      * call DelUser unless we have the user in our grasp. */
1275     if ((user = GetUserH(origin)))
1276         DelUser(user, NULL, false, argv[1]);
1277     return 1;
1278 }
1279
1280 static CMD_FUNC(cmd_kill)
1281 {
1282     struct userNode *user;
1283     if (argc < 2)
1284         return 0;
1285     user = GetUserN(argv[1]);
1286     if (!user) {
1287         /* If we get a KILL for a non-existent user, it could be a
1288          * Ghost response to a KILL we sent out earlier.  So we only
1289          * whine if the target is local.
1290          */
1291         if (!strncmp(argv[1], self->numeric, strlen(self->numeric)))
1292             log_module(MAIN_LOG, LOG_ERROR, "Unable to find kill victim %s", argv[1]);
1293         return 0;
1294     }
1295
1296     if (IsLocal(user) && IsService(user)) {
1297         /* TODO: rate limit this so silly things don't happen. */
1298         ReintroduceUser(user);
1299         return 1;
1300     }
1301
1302     DelUser(user, NULL, false, argv[2]);
1303     return 1;
1304 }
1305
1306 static CMD_FUNC(cmd_part)
1307 {
1308     struct userNode *user;
1309
1310     if (argc < 2)
1311         return 0;
1312     user = GetUserH(origin);
1313     if (!user)
1314         return 0;
1315     parse_foreach(argv[1], part_helper, NULL, NULL, NULL, user);
1316     return 1;
1317 }
1318
1319 static CMD_FUNC(cmd_kick)
1320 {
1321     if (argc < 3)
1322         return 0;
1323     ChannelUserKicked(GetUserH(origin), GetUserN(argv[2]), GetChannel(argv[1]));
1324     return 1;
1325 }
1326
1327 static CMD_FUNC(cmd_squit)
1328 {
1329     struct server *server;
1330
1331     if (argc < 4)
1332         return 0;
1333     if (!(server = GetServerH(argv[1])))
1334         return 0;
1335
1336     if (server == self->uplink) {
1337         /* Force a reconnect to the currently selected server. */
1338         cManager.uplink->tries = 0;
1339         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", argv[3]);
1340         close_socket();
1341         return 1;
1342     }
1343
1344     DelServer(server, 0, argv[3]);
1345     return 1;
1346 }
1347
1348 static CMD_FUNC(cmd_privmsg)
1349 {
1350     struct privmsg_desc pd;
1351     if (argc != 3)
1352         return 0;
1353     pd.user = GetUserH(origin);
1354     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user)))
1355         return 1;
1356     pd.is_notice = 0;
1357     pd.text = argv[2];
1358     parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1359     return 1;
1360 }
1361
1362 static CMD_FUNC(cmd_notice)
1363 {
1364     struct privmsg_desc pd;
1365     if (argc != 3)
1366         return 0;
1367     pd.user = GetUserH(origin);
1368     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user)))
1369         return 1;
1370     pd.is_notice = 1;
1371     pd.text = argv[2];
1372     parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1373     return 1;
1374 }
1375
1376 static CMD_FUNC(cmd_away)
1377 {
1378     struct userNode *uNode;
1379
1380     uNode = GetUserH(origin);
1381     if (!uNode)
1382         return 1;
1383     if (argc < 2)
1384         uNode->modes &= ~FLAGS_AWAY;
1385     else
1386         uNode->modes |= FLAGS_AWAY;
1387     return 1;
1388 }
1389
1390 static CMD_FUNC(cmd_gline)
1391 {
1392     if (argc < 3)
1393         return 0;
1394     if (argv[2][0] == '+') {
1395         if (argc < 5)
1396             return 0;
1397         gline_add(origin, argv[2]+1, strtoul(argv[3], NULL, 0), argv[argc-1], now, 0);
1398         return 1;
1399     } else if (argv[2][0] == '-') {
1400         gline_remove(argv[2]+1, 0);
1401         return 1;
1402     } else
1403         return 0;
1404 }
1405
1406 static CMD_FUNC(cmd_svsnick)
1407 {
1408     struct userNode *target, *dest;
1409     if ((argc < 4)
1410         || !(target = GetUserN(argv[1]))
1411         || !IsLocal(target)
1412         || (dest = GetUserH(argv[2])))
1413         return 0;
1414     NickChange(target, argv[2], 0);
1415     return 1;
1416 }
1417
1418 static oper_func_t *of_list;
1419 static unsigned int of_size = 0, of_used = 0;
1420
1421 void
1422 free_user(struct userNode *user)
1423 {
1424     free(user->nick);
1425     free(user);
1426 }
1427
1428 static void
1429 parse_cleanup(void)
1430 {
1431     unsigned int nn;
1432     free(of_list);
1433     free(privmsg_funcs);
1434     free(notice_funcs);
1435     free(mcf_list);
1436     dict_delete(irc_func_dict);
1437     for (nn=0; nn<dead_users.used; nn++)
1438         free_user(dead_users.list[nn]);
1439     userList_clean(&dead_users);
1440 }
1441
1442 static void
1443 p10_conf_reload(void) {
1444     hidden_host_suffix = conf_get_data("server/hidden_host", RECDB_QSTRING);
1445 }
1446
1447 static void
1448 remove_unbursted_channel(struct chanNode *cNode) {
1449     if (unbursted_channels)
1450         dict_remove(unbursted_channels, cNode->name);
1451 }
1452
1453 void
1454 init_parse(void)
1455 {
1456     const char *str, *desc;
1457     int numnick, usermask, max_users;
1458     char numer[COMBO_NUMERIC_LEN+1];
1459
1460     /* read config items */
1461     str = conf_get_data("server/ping_freq", RECDB_QSTRING);
1462     ping_freq = str ? ParseInterval(str) : 120;
1463     str = conf_get_data("server/ping_timeout", RECDB_QSTRING);
1464     ping_timeout = str ? ParseInterval(str) : 30;
1465     str = conf_get_data("server/force_n2k", RECDB_QSTRING);
1466     force_n2k = str ? enabled_string(str) : 1;
1467     str = conf_get_data("server/numeric", RECDB_QSTRING);
1468     if (!str) {
1469         log_module(MAIN_LOG, LOG_ERROR, "No server/numeric entry in config file.");
1470         exit(1);
1471     }
1472     numnick = atoi(str);
1473     str = conf_get_data("server/max_users", RECDB_QSTRING);
1474     max_users = str ? atoi(str) : 4096;
1475     for (usermask = 4; usermask < max_users; usermask <<= 1) ;
1476     usermask--;
1477     if ((numnick < 64) && (usermask < 4096) && !force_n2k)
1478         inttobase64(numer, (numnick << 12) + (usermask & 0x00fff), 3);
1479     else
1480         inttobase64(numer, (numnick << 18) + (usermask & 0x3ffff), 5);
1481
1482     str = conf_get_data("server/his_servername", RECDB_QSTRING);
1483     his_servername = str ? strdup(str) : NULL;
1484     str = conf_get_data("server/his_servercomment", RECDB_QSTRING);
1485     his_servercomment = str ? strdup(str) : NULL;
1486
1487     str = conf_get_data("server/hostname", RECDB_QSTRING);
1488     desc = conf_get_data("server/description", RECDB_QSTRING);
1489     if (!str || !desc) {
1490         log_module(MAIN_LOG, LOG_ERROR, "No server/hostname entry in config file.");
1491         exit(1);
1492     }
1493     self = AddServer(NULL, str, 0, boot_time, now, numer, desc);
1494     conf_register_reload(p10_conf_reload);
1495
1496     irc_func_dict = dict_new();
1497     dict_insert(irc_func_dict, CMD_BURST, cmd_burst);
1498     dict_insert(irc_func_dict, TOK_BURST, cmd_burst);
1499     dict_insert(irc_func_dict, CMD_CREATE, cmd_create);
1500     dict_insert(irc_func_dict, TOK_CREATE, cmd_create);
1501     dict_insert(irc_func_dict, CMD_EOB, cmd_eob);
1502     dict_insert(irc_func_dict, TOK_EOB, cmd_eob);
1503     dict_insert(irc_func_dict, CMD_EOB_ACK, cmd_eob_ack);
1504     dict_insert(irc_func_dict, TOK_EOB_ACK, cmd_eob_ack);
1505     dict_insert(irc_func_dict, CMD_MODE, cmd_mode);
1506     dict_insert(irc_func_dict, TOK_MODE, cmd_mode);
1507     dict_insert(irc_func_dict, CMD_NICK, cmd_nick);
1508     dict_insert(irc_func_dict, TOK_NICK, cmd_nick);
1509     dict_insert(irc_func_dict, CMD_ACCOUNT, cmd_account);
1510     dict_insert(irc_func_dict, TOK_ACCOUNT, cmd_account);
1511     dict_insert(irc_func_dict, CMD_FAKEHOST, cmd_fakehost);
1512     dict_insert(irc_func_dict, TOK_FAKEHOST, cmd_fakehost);
1513     dict_insert(irc_func_dict, CMD_PASS, cmd_pass);
1514     dict_insert(irc_func_dict, TOK_PASS, cmd_pass);
1515     dict_insert(irc_func_dict, CMD_PING, cmd_ping);
1516     dict_insert(irc_func_dict, TOK_PING, cmd_ping);
1517     dict_insert(irc_func_dict, CMD_PRIVMSG, cmd_privmsg);
1518     dict_insert(irc_func_dict, TOK_PRIVMSG, cmd_privmsg);
1519     dict_insert(irc_func_dict, CMD_PONG, cmd_pong);
1520     dict_insert(irc_func_dict, TOK_PONG, cmd_pong);
1521     dict_insert(irc_func_dict, CMD_QUIT, cmd_quit);
1522     dict_insert(irc_func_dict, TOK_QUIT, cmd_quit);
1523     dict_insert(irc_func_dict, CMD_SERVER, cmd_server);
1524     dict_insert(irc_func_dict, TOK_SERVER, cmd_server);
1525     dict_insert(irc_func_dict, CMD_JOIN, cmd_join);
1526     dict_insert(irc_func_dict, TOK_JOIN, cmd_join);
1527     dict_insert(irc_func_dict, CMD_PART, cmd_part);
1528     dict_insert(irc_func_dict, TOK_PART, cmd_part);
1529     dict_insert(irc_func_dict, CMD_ERROR, cmd_error);
1530     dict_insert(irc_func_dict, TOK_ERROR, cmd_error);
1531     dict_insert(irc_func_dict, CMD_TOPIC, cmd_topic);
1532     dict_insert(irc_func_dict, TOK_TOPIC, cmd_topic);
1533     dict_insert(irc_func_dict, CMD_AWAY, cmd_away);
1534     dict_insert(irc_func_dict, TOK_AWAY, cmd_away);
1535     dict_insert(irc_func_dict, CMD_SILENCE, cmd_dummy);
1536     dict_insert(irc_func_dict, TOK_SILENCE, cmd_dummy);
1537     dict_insert(irc_func_dict, CMD_KICK, cmd_kick);
1538     dict_insert(irc_func_dict, TOK_KICK, cmd_kick);
1539     dict_insert(irc_func_dict, CMD_SQUIT, cmd_squit);
1540     dict_insert(irc_func_dict, TOK_SQUIT, cmd_squit);
1541     dict_insert(irc_func_dict, CMD_KILL, cmd_kill);
1542     dict_insert(irc_func_dict, TOK_KILL, cmd_kill);
1543     dict_insert(irc_func_dict, CMD_NOTICE, cmd_notice);
1544     dict_insert(irc_func_dict, TOK_NOTICE, cmd_notice);
1545     dict_insert(irc_func_dict, CMD_STATS, cmd_stats);
1546     dict_insert(irc_func_dict, TOK_STATS, cmd_stats);
1547     dict_insert(irc_func_dict, CMD_SVSNICK, cmd_svsnick);
1548     dict_insert(irc_func_dict, TOK_SVSNICK, cmd_svsnick);
1549     dict_insert(irc_func_dict, CMD_WHOIS, cmd_whois);
1550     dict_insert(irc_func_dict, TOK_WHOIS, cmd_whois);
1551     dict_insert(irc_func_dict, CMD_GLINE, cmd_gline);
1552     dict_insert(irc_func_dict, TOK_GLINE, cmd_gline);
1553     dict_insert(irc_func_dict, CMD_OPMODE, cmd_opmode);
1554     dict_insert(irc_func_dict, TOK_OPMODE, cmd_opmode);
1555     dict_insert(irc_func_dict, CMD_CLEARMODE, cmd_clearmode);
1556     dict_insert(irc_func_dict, TOK_CLEARMODE, cmd_clearmode);
1557     dict_insert(irc_func_dict, CMD_VERSION, cmd_version);
1558     dict_insert(irc_func_dict, TOK_VERSION, cmd_version);
1559     dict_insert(irc_func_dict, CMD_ADMIN, cmd_admin);
1560     dict_insert(irc_func_dict, TOK_ADMIN, cmd_admin);
1561
1562     /* In P10, DESTRUCT doesn't do anything except be broadcast to servers.
1563      * Apparently to obliterate channels from any servers that think they
1564      * exist?
1565      */
1566     dict_insert(irc_func_dict, CMD_DESTRUCT, cmd_dummy);
1567     dict_insert(irc_func_dict, TOK_DESTRUCT, cmd_dummy);
1568     /* Ignore invites */
1569     dict_insert(irc_func_dict, CMD_INVITE, cmd_dummy);
1570     dict_insert(irc_func_dict, TOK_INVITE, cmd_dummy);
1571     /* DESYNCH is just informational, so ignore it */
1572     dict_insert(irc_func_dict, CMD_DESYNCH, cmd_dummy);
1573     dict_insert(irc_func_dict, TOK_DESYNCH, cmd_dummy);
1574     /* Ignore channel operator notices. */
1575     dict_insert(irc_func_dict, CMD_WALLCHOPS, cmd_dummy);
1576     dict_insert(irc_func_dict, TOK_WALLCHOPS, cmd_dummy);
1577     dict_insert(irc_func_dict, CMD_WALLVOICES, cmd_dummy);
1578     dict_insert(irc_func_dict, TOK_WALLVOICES, cmd_dummy);
1579     /* Ignore opers being silly. */
1580     dict_insert(irc_func_dict, CMD_WALLOPS, cmd_dummy);
1581     dict_insert(irc_func_dict, TOK_WALLOPS, cmd_dummy);
1582     /* We have reliable clock!  Always!  Wraaa! */
1583     dict_insert(irc_func_dict, CMD_SETTIME, cmd_dummy);
1584     dict_insert(irc_func_dict, TOK_SETTIME, cmd_dummy);
1585     /* handle topics */
1586     dict_insert(irc_func_dict, "331", cmd_num_topic);
1587     dict_insert(irc_func_dict, "332", cmd_num_topic);
1588     dict_insert(irc_func_dict, "333", cmd_num_topic);
1589     dict_insert(irc_func_dict, "345", cmd_dummy); /* blah has been invited to blah */
1590     dict_insert(irc_func_dict, "432", cmd_error_nick); /* Erroneus [sic] nickname */
1591     /* ban list resetting */
1592     /* "stats g" responses */
1593     dict_insert(irc_func_dict, "247", cmd_num_gline);
1594     dict_insert(irc_func_dict, "219", cmd_dummy); /* "End of /STATS report" */
1595     /* other numeric responses we might get */
1596     dict_insert(irc_func_dict, "401", cmd_dummy); /* target left network */
1597     dict_insert(irc_func_dict, "403", cmd_dummy); /* no such channel */
1598     dict_insert(irc_func_dict, "404", cmd_dummy); /* cannot send to channel */
1599     dict_insert(irc_func_dict, "441", cmd_dummy); /* target isn't on that channel */
1600     dict_insert(irc_func_dict, "442", cmd_dummy); /* you aren't on that channel */
1601     dict_insert(irc_func_dict, "443", cmd_dummy); /* is already on channel (after invite?) */
1602     dict_insert(irc_func_dict, "461", cmd_dummy); /* Not enough parameters (after TOPIC w/ 0 args) */
1603     dict_insert(irc_func_dict, "467", cmd_dummy); /* Channel key already set */
1604
1605     num_privmsg_funcs = 16;
1606     privmsg_funcs = malloc(sizeof(privmsg_func_t)*num_privmsg_funcs);
1607     memset(privmsg_funcs, 0, sizeof(privmsg_func_t)*num_privmsg_funcs);
1608
1609     num_notice_funcs = 16;
1610     notice_funcs = malloc(sizeof(privmsg_func_t)*num_notice_funcs);
1611     memset(notice_funcs, 0, sizeof(privmsg_func_t)*num_notice_funcs);
1612
1613     userList_init(&dead_users);
1614     reg_del_channel_func(remove_unbursted_channel);
1615     reg_exit_func(parse_cleanup);
1616 }
1617
1618 int
1619 parse_line(char *line, int recursive)
1620 {
1621     char *argv[MAXNUMPARAMS], *origin;
1622     int argc, cmd, res=0;
1623     cmd_func_t *func;
1624
1625     argc = split_line(line, true, MAXNUMPARAMS, argv);
1626     cmd = self->uplink || !argv[0][1] || !argv[0][2];
1627     if (argc > cmd) {
1628         if (cmd) {
1629             if (argv[0][0] == ':') {
1630                 origin = argv[0]+1;
1631             } else if (!argv[0][1] || !argv[0][2]) {
1632                 struct server *sNode = GetServerN(argv[0]);
1633                 origin = sNode ? sNode->name : 0;
1634             } else {
1635                 struct userNode *uNode = GetUserN(argv[0]);
1636                 origin = uNode ? uNode->nick : 0;
1637             }
1638         } else
1639             origin = 0;
1640         if ((func = dict_find(irc_func_dict, argv[cmd], NULL)))
1641             res = func(origin, argc-cmd, argv+cmd);
1642     }
1643     if (!res) {
1644         log_module(MAIN_LOG, LOG_ERROR, "PARSE ERROR on line: %s", unsplit_string(argv, argc, NULL));
1645     } else if (!recursive) {
1646         unsigned int i;
1647         for (i=0; i<dead_users.used; i++)
1648             free_user(dead_users.list[i]);
1649         dead_users.used = 0;
1650     }
1651     return res;
1652 }
1653
1654 static void
1655 parse_foreach(char *target_list, foreach_chanfunc cf, foreach_nonchan nc, foreach_userfunc uf, foreach_nonuser nu, void *data)
1656 {
1657     char *j, old;
1658     do {
1659         j = target_list;
1660         while (*j != 0 && *j != ',')
1661             j++;
1662         old = *j;
1663         *j = 0;
1664         if (IsChannelName(target_list)
1665             || (target_list[0] == '0' && target_list[1] == '\0')) {
1666             struct chanNode *chan = GetChannel(target_list);
1667             if (chan) {
1668                 if (cf)
1669                     cf(chan, data);
1670             } else {
1671                 if (nc)
1672                     nc(target_list, data);
1673             }
1674         } else {
1675             struct userNode *user;
1676             struct privmsg_desc *pd = data;
1677
1678             pd->is_qualified = 0;
1679             if (*target_list == '@') {
1680                 user = NULL;
1681             } else if (strchr(target_list, '@')) {
1682                 struct server *server;
1683
1684                 pd->is_qualified = 1;
1685                 user = GetUserH(strtok(target_list, "@"));
1686                 server = GetServerH(strtok(NULL, "@"));
1687
1688                 if (user && (user->uplink != server)) {
1689                     /* Don't attempt to index into any arrays
1690                        using a user's numeric on another server. */
1691                     user = NULL;
1692                 }
1693             } else {
1694                 user = GetUserN(target_list);
1695             }
1696
1697             if (user) {
1698                 if (uf)
1699                     uf(user, data);
1700             } else {
1701                 if (nu)
1702                     nu(target_list, data);
1703             }
1704         }
1705         target_list = j+1;
1706     } while (old == ',');
1707 }
1708
1709 static int
1710 get_local_numeric(void)
1711 {
1712     static unsigned int next_numeric = 0;
1713     if (self->clients > self->num_mask)
1714         return -1;
1715     while (self->users[next_numeric])
1716         if (++next_numeric > self->num_mask)
1717             next_numeric = 0;
1718     return next_numeric;
1719 }
1720
1721 static void
1722 make_numeric(struct server *svr, int local_num, char *outbuf)
1723 {
1724     int slen, llen;
1725
1726     if (force_n2k || svr->numeric[1]) {
1727         slen = 2;
1728         llen = 3;
1729     } else {
1730         slen = 1;
1731         llen = (local_num < 64*64) ? 2 : 3;
1732     }
1733     strncpy(outbuf, svr->numeric, slen);
1734     inttobase64(outbuf+slen, local_num, llen);
1735     outbuf[slen+llen] = 0;
1736 }
1737
1738 struct server *
1739 AddServer(struct server *uplink, const char *name, int hops, time_t boot, time_t link, const char *numeric, const char *description)
1740 {
1741     struct server* sNode;
1742     int slen, mlen;
1743
1744     if ((sNode = GetServerN(numeric))) {
1745         /* This means we're trying to re-add an existant server.
1746          * To be safe, we should forget the previous incarnation.
1747          * (And all its linked servers.)
1748          *
1749          * It usually only happens in replays when the original
1750          * had a ping timeout and the replay didn't (because
1751          * replaying a ping timeout invariably gets things wrong).
1752          */
1753         DelServer(sNode, 0, NULL);
1754     }
1755
1756     switch (strlen(numeric)) {
1757     case 5: slen = 2; mlen = 3; break;
1758     case 4: slen = 1; mlen = 3; break;
1759     case 3: slen = 1; mlen = 2; break;
1760     default:
1761         log_module(MAIN_LOG, LOG_ERROR, "AddServer(\"%s\", \"%s\", ...): Numeric %s has invalid length.", uplink->name, name, numeric);
1762         return NULL;
1763     }
1764
1765     sNode = calloc(1, sizeof(*sNode));
1766     sNode->uplink = uplink;
1767     safestrncpy(sNode->name, name, sizeof(sNode->name));
1768     sNode->num_mask = base64toint(numeric+slen, mlen);
1769     sNode->hops = hops;
1770     sNode->boot = boot;
1771     sNode->link = link;
1772     strncpy(sNode->numeric, numeric, slen);
1773     safestrncpy(sNode->description, description, sizeof(sNode->description));
1774     sNode->users = calloc(sNode->num_mask+1, sizeof(*sNode->users));
1775     serverList_init(&sNode->children);
1776     if (sNode->uplink) {
1777         /* uplink may be NULL if we're just building ourself */
1778         serverList_append(&sNode->uplink->children, sNode);
1779     }
1780     servers_num[base64toint(numeric, slen)] = sNode;
1781     dict_insert(servers, sNode->name, sNode);
1782     return sNode;
1783 }
1784
1785 void DelServer(struct server* serv, int announce, const char *message)
1786 {
1787     unsigned int i;
1788
1789     /* If we receive an ERROR command before the SERVER
1790      * command a NULL server can be passed */
1791     if (!serv)
1792         return;
1793
1794     /* Hrm, what's the right way to SQUIT some other server?
1795      * (This code is only to handle killing juped servers.) */
1796     if (announce && (serv->uplink == self) && (serv != self->uplink))
1797         irc_squit(serv, message, NULL);
1798
1799     /* must recursively remove servers linked to this one first */
1800     for (i=serv->children.used;i>0;)
1801         if (serv->children.list[--i] != self)
1802             DelServer(serv->children.list[i], false, NULL);
1803
1804     /* clean up server's user hash tables */
1805     for (i=0;i<=serv->num_mask;i++)
1806         if (serv->users[i])
1807             DelUser(serv->users[i], NULL, false, "server delinked");
1808
1809     /* delete server */
1810     if (serv->uplink)
1811         serverList_remove(&serv->uplink->children, serv);
1812     if (serv == self->uplink)
1813         self->uplink = NULL;
1814     servers_num[base64toint(serv->numeric, strlen(serv->numeric))] = NULL;
1815     dict_remove(servers, serv->name);
1816     serverList_clean(&serv->children);
1817     free(serv->users);
1818     free(serv);
1819 }
1820
1821 struct userNode *
1822 AddService(const char *nick, const char *desc, const char *hostname)
1823 {
1824     char numeric[COMBO_NUMERIC_LEN+1];
1825     int local_num = get_local_numeric();
1826     time_t timestamp = now;
1827     struct userNode *old_user = GetUserH(nick);
1828
1829     if (old_user) {
1830         if (IsLocal(old_user))
1831             return old_user;
1832         timestamp = old_user->timestamp - 1;
1833     }
1834     if (local_num == -1) {
1835         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for service %s", nick);
1836         return 0;
1837     }
1838     if (!hostname)
1839         hostname = self->name;
1840     make_numeric(self, local_num, numeric);
1841     return AddUser(self, nick, nick, hostname, "+oik", numeric, desc, now, "AAAAAA");
1842 }
1843
1844 struct userNode *
1845 AddClone(const char *nick, const char *ident, const char *hostname, const char *desc)
1846 {
1847     char numeric[COMBO_NUMERIC_LEN+1];
1848     int local_num = get_local_numeric();
1849     time_t timestamp = now;
1850     struct userNode *old_user = GetUserH(nick);
1851
1852     if (old_user) {
1853         if (IsLocal(old_user))
1854             return old_user;
1855         timestamp = old_user->timestamp - 1;
1856     }
1857     if (local_num == -1) {
1858         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for clone %s", nick);
1859         return 0;
1860     }
1861     make_numeric(self, local_num, numeric);
1862     return AddUser(self, nick, ident, hostname, "+i", numeric, desc, timestamp, "AAAAAA");
1863 }
1864
1865 int
1866 is_valid_nick(const char *nick) {
1867     /* IRC has some of The Most Fucked-Up ideas about character sets
1868      * in the world.. */
1869     if (!isalpha(*nick) && !strchr("{|}~[\\]^_`", *nick))
1870         return 0;
1871     for (++nick; *nick; ++nick)
1872         if (!isalnum(*nick) && !strchr("{|}~[\\]^-_`", *nick))
1873             return 0;
1874     if (strlen(nick) > nicklen)
1875         return 0;
1876     return 1;
1877 }
1878
1879 static struct userNode*
1880 AddUser(struct server* uplink, const char *nick, const char *ident, const char *hostname, const char *modes, const char *numeric, const char *userinfo, time_t timestamp, const char *realip)
1881 {
1882     struct userNode *oldUser, *uNode;
1883     unsigned int n, ignore_user;
1884
1885     if ((strlen(numeric) < 3) || (strlen(numeric) > 5)) {
1886         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): numeric %s wrong length!", uplink, nick, numeric);
1887         return NULL;
1888     }
1889
1890     if (!uplink) {
1891         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s doesn't exist!", uplink, nick, numeric);
1892         return NULL;
1893     }
1894
1895     if (uplink != GetServerN(numeric)) {
1896         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s differs from nominal uplink %s.", uplink, nick, numeric, uplink->name);
1897         return NULL;
1898     }
1899
1900     if (!is_valid_nick(nick)) {
1901         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): invalid nickname detected.", uplink, nick);
1902         return NULL;
1903     }
1904
1905     ignore_user = 0;
1906     if ((oldUser = GetUserH(nick))) {
1907         if (IsLocal(oldUser) && (IsService(oldUser) || IsPersistent(oldUser))) {
1908             /* The service should collide the new user off. */
1909             oldUser->timestamp = timestamp - 1;
1910             irc_user(oldUser);
1911         }
1912         if (oldUser->timestamp > timestamp) {
1913             /* "Old" user is really newer; remove them */
1914             DelUser(oldUser, 0, 1, "Overruled by older nick");
1915         } else {
1916             /* User being added is too new; do not add them to
1917              * clients, but do add them to the server's list, since it
1918              * will send a KILL and QUIT soon. */
1919             ignore_user = 1;
1920         }
1921     }
1922
1923     /* create new usernode and set all values */
1924     uNode = calloc(1, sizeof(*uNode));
1925     uNode->nick = strdup(nick);
1926     safestrncpy(uNode->ident, ident, sizeof(uNode->ident));
1927     safestrncpy(uNode->info, userinfo, sizeof(uNode->info));
1928     safestrncpy(uNode->hostname, hostname, sizeof(uNode->hostname));
1929     safestrncpy(uNode->numeric, numeric, sizeof(uNode->numeric));
1930     uNode->ip.s_addr = htonl(base64toint(realip, 6));
1931     uNode->timestamp = timestamp;
1932     modeList_init(&uNode->channels);
1933     uNode->uplink = uplink;
1934     if (++uNode->uplink->clients > uNode->uplink->max_clients) {
1935         uNode->uplink->max_clients = uNode->uplink->clients;
1936     }
1937     uNode->num_local = base64toint(numeric+strlen(uNode->uplink->numeric), 3) & uNode->uplink->num_mask;
1938     uNode->uplink->users[uNode->num_local] = uNode;
1939     mod_usermode(uNode, modes);
1940     if (ignore_user)
1941         return uNode;
1942
1943     dict_insert(clients, uNode->nick, uNode);
1944     if (dict_size(clients) > max_clients) {
1945         max_clients = dict_size(clients);
1946         max_clients_time = now;
1947     }
1948     if (IsLocal(uNode))
1949         irc_user(uNode);
1950     for (n=0; n<nuf_used; n++)
1951         if (nuf_list[n](uNode))
1952             break;
1953     return uNode;
1954 }
1955
1956 /* removes user from it's server's hash table and nick hash table */
1957 void
1958 DelUser(struct userNode* user, struct userNode *killer, int announce, const char *why)
1959 {
1960     unsigned int n;
1961
1962     /* mark them as dead, in case anybody cares */
1963     user->dead = 1;
1964
1965     /* remove user from all channels */
1966     while (user->channels.used > 0)
1967         DelChannelUser(user, user->channels.list[user->channels.used-1]->channel, false, 0);
1968
1969     /* Call these in reverse order so ChanServ can update presence
1970        information before NickServ nukes the handle_info. */
1971     for (n = duf_used; n > 0; )
1972         duf_list[--n](user, killer, why);
1973
1974     user->uplink->clients--;
1975     user->uplink->users[user->num_local] = NULL;
1976     if (IsOper(user))
1977         userList_remove(&curr_opers, user);
1978     /* remove from global dictionary, but not if after a collide */
1979     if (user == dict_find(clients, user->nick, NULL))
1980         dict_remove(clients, user->nick);
1981
1982     if (IsInvisible(user))
1983         invis_clients--;
1984
1985     if (announce) {
1986         if (IsLocal(user))
1987             irc_quit(user, why);
1988         else
1989             irc_kill(killer, user, why);
1990     }
1991
1992     modeList_clean(&user->channels);
1993     /* We don't free them, in case we try to privmsg them or something
1994      * (like when a stupid oper kills themself).  We just put them onto
1995      * a list of clients that get freed after processing each line.
1996      */
1997     if (dead_users.size)
1998         userList_append(&dead_users, user);
1999     else
2000         free_user(user);
2001 }
2002
2003 void mod_usermode(struct userNode *user, const char *mode_change) {
2004     static void call_oper_funcs(struct userNode *user);
2005     int add = 1;
2006     const char *word = mode_change;
2007
2008     if (!user || !mode_change)
2009         return;
2010     while (*word != ' ' && *word) word++;\
2011     while (*word == ' ') word++; \
2012     while (1) {
2013 #define do_user_mode(FLAG) do { if (add) user->modes |= FLAG; else user->modes &= ~FLAG; } while (0)
2014         switch (*mode_change++) {
2015         case 0: case ' ': return;
2016         case '+': add = 1; break;
2017         case '-': add = 0; break;
2018         case 'o':
2019             do_user_mode(FLAGS_OPER);
2020             if (add) {
2021                 userList_append(&curr_opers, user);
2022                 call_oper_funcs(user);
2023             } else {
2024                 userList_remove(&curr_opers, user);
2025             }
2026             break;
2027         case 'O': do_user_mode(FLAGS_LOCOP); break;
2028         case 'i': do_user_mode(FLAGS_INVISIBLE);
2029             if (add)
2030                 invis_clients++;
2031             else
2032                 invis_clients--;
2033             break;
2034         case 'w': do_user_mode(FLAGS_WALLOP); break;
2035         case 's': do_user_mode(FLAGS_SERVNOTICE); break;
2036         case 'd': do_user_mode(FLAGS_DEAF); break;
2037         case 'k': do_user_mode(FLAGS_SERVICE); break;
2038         case 'g': do_user_mode(FLAGS_GLOBAL); break;
2039         // sethost - reed/apples
2040         // case 'h': do_user_mode(FLAGS_HELPER); break;
2041         // I check if there's an 'h' in the first part, and if there,
2042         // then everything after the space becomes their new host.
2043         case 'h': do_user_mode(FLAGS_SETHOST);
2044             if (*word) {
2045                 char sethost[MAXLEN];
2046                 unsigned int ii;
2047                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2048                     sethost[ii++] = *word++;
2049                 sethost[ii] = 0;
2050                 while (*word == ' ')
2051                     word++;
2052                 safestrncpy(user->sethost, sethost, sizeof(user->sethost));
2053             }
2054             break;
2055         case 'x': do_user_mode(FLAGS_HIDDEN_HOST); break;
2056         case 'r':
2057             if (*word) {
2058                 char tag[MAXLEN];
2059                 unsigned int ii;
2060                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2061                     tag[ii++] = *word++;
2062                 tag[ii] = 0;
2063                 while (*word == ' ')
2064                     word++;
2065                 call_account_func(user, tag);
2066             }
2067             break;
2068         case 'f':
2069             if (*word) {
2070                 char host[MAXLEN];
2071                 unsigned int ii;
2072                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2073                     host[ii++] = *word++;
2074                 host[ii] = 0;
2075                 while (*word == ' ')
2076                     word++;
2077                 assign_fakehost(user, host, 0);
2078             }
2079             break;
2080         }
2081 #undef do_user_mode
2082     }
2083 }
2084
2085 struct mod_chanmode *
2086 mod_chanmode_parse(struct chanNode *channel, char **modes, unsigned int argc, unsigned int flags)
2087 {
2088     struct mod_chanmode *change;
2089     unsigned int ii, in_arg, ch_arg, add;
2090
2091     if (argc == 0)
2092         return NULL;
2093     if (!(change = mod_chanmode_alloc(argc - 1)))
2094         return NULL;
2095
2096     for (ii = ch_arg = 0, in_arg = add = 1;
2097          (modes[0][ii] != '\0') && (modes[0][ii] != ' ');
2098          ++ii) {
2099         switch (modes[0][ii]) {
2100         case '+':
2101             add = 1;
2102             break;
2103         case '-':
2104             add = 0;
2105             break;
2106 #define do_chan_mode(FLAG) do { if (add) change->modes_set |= (FLAG), change->modes_clear &= ~(FLAG); else change->modes_clear |= (FLAG), change->modes_set &= ~(FLAG); } while(0)
2107         case 'C': do_chan_mode(MODE_NOCTCPS); break;
2108         case 'D': do_chan_mode(MODE_DELAYJOINS); break;
2109         case 'c': do_chan_mode(MODE_NOCOLORS); break;
2110         case 'i': do_chan_mode(MODE_INVITEONLY); break;
2111         case 'm': do_chan_mode(MODE_MODERATED); break;
2112         case 'n': do_chan_mode(MODE_NOPRIVMSGS); break;
2113         case 'p': do_chan_mode(MODE_PRIVATE); break;
2114         case 'r': do_chan_mode(MODE_REGONLY); break;
2115         case 's': do_chan_mode(MODE_SECRET); break;
2116         case 't': do_chan_mode(MODE_TOPICLIMIT); break;
2117         case 'S': do_chan_mode(MODE_STRIPCOLOR); break;
2118         case 'M': do_chan_mode(MODE_MODUNREG); break;
2119         case 'N': do_chan_mode(MODE_NONOTICE); break;
2120         case 'Q': do_chan_mode(MODE_NOQUITMSGS); break;
2121         case 'T': do_chan_mode(MODE_NOAMSG); break;
2122         case 'O': do_chan_mode(MODE_OPERSONLY); break;
2123 //   uncomment this when ssl is enabled on the network.
2124 //        case 'z': do_chan_mode(MODE_SSLONLY); break;
2125 #undef do_chan_mode
2126         case 'l':
2127             if (add) {
2128                 if (in_arg >= argc)
2129                     goto error;
2130                 change->modes_set |= MODE_LIMIT;
2131                 change->new_limit = atoi(modes[in_arg++]);
2132             } else {
2133                 change->modes_set &= ~MODE_LIMIT;
2134                 change->modes_clear |= MODE_LIMIT;
2135             }
2136             break;
2137         case 'k':
2138             if (add) {
2139                 if (in_arg >= argc)
2140                     goto error;
2141                 change->modes_set |= MODE_KEY;
2142                 safestrncpy(change->new_key, modes[in_arg++], sizeof(change->new_key));
2143             } else {
2144                 change->modes_clear |= MODE_KEY;
2145                 if (!(flags & MCP_KEY_FREE)) {
2146                     if (in_arg >= argc)
2147                         goto error;
2148                     in_arg++;
2149                 }
2150             }
2151             break;
2152         case 'b':
2153             if (!(flags & MCP_ALLOW_OVB))
2154                 goto error;
2155             if (in_arg >= argc)
2156                 goto error;
2157             change->args[ch_arg].mode = MODE_BAN;
2158             if (!add)
2159                 change->args[ch_arg].mode |= MODE_REMOVE;
2160             change->args[ch_arg++].hostmask = modes[in_arg++];
2161             break;
2162         case 'o': case 'v':
2163         {
2164             struct userNode *victim;
2165             if (!(flags & MCP_ALLOW_OVB))
2166                 goto error;
2167             if (in_arg >= argc)
2168                 goto error;
2169             change->args[ch_arg].mode = (modes[0][ii] == 'o') ? MODE_CHANOP : MODE_VOICE;
2170             if (!add)
2171                 change->args[ch_arg].mode |= MODE_REMOVE;
2172             if (flags & MCP_FROM_SERVER)
2173                 victim = GetUserN(modes[in_arg++]);
2174             else
2175                 victim = GetUserH(modes[in_arg++]);
2176             if (!victim)
2177                 continue;
2178             if ((change->args[ch_arg].member = GetUserMode(channel, victim)))
2179                 ch_arg++;
2180             break;
2181         }
2182         default:
2183             if (!(flags & MCP_FROM_SERVER))
2184                 goto error;
2185             break;
2186         }
2187     }
2188     change->argc = ch_arg; /* in case any turned out to be ignored */
2189     if (change->modes_set & MODE_SECRET) {
2190         change->modes_set &= ~(MODE_PRIVATE);
2191         change->modes_clear |= MODE_PRIVATE;
2192     } else if (change->modes_set & MODE_PRIVATE) {
2193         change->modes_set &= ~(MODE_SECRET);
2194         change->modes_clear |= MODE_SECRET;
2195     }
2196     return change;
2197   error:
2198     mod_chanmode_free(change);
2199     return NULL;
2200 }
2201
2202 struct chanmode_buffer {
2203     char modes[MAXLEN];
2204     char args[MAXLEN];
2205     struct chanNode *channel;
2206     struct userNode *actor;
2207     unsigned int modes_used;
2208     unsigned int args_used;
2209     size_t chname_len;
2210     unsigned int is_add : 1;
2211     unsigned int is_chanop : 1;
2212 };
2213
2214 static void
2215 mod_chanmode_append(struct chanmode_buffer *buf, char ch, const char *arg)
2216 {
2217     size_t arg_len = strlen(arg);
2218     if (buf->modes_used > (MAXMODEPARAMS) ||
2219         buf->modes_used + buf->args_used + buf->chname_len + arg_len > 450) {
2220         memcpy(buf->modes + buf->modes_used, buf->args, buf->args_used);
2221         buf->modes[buf->modes_used + buf->args_used] = '\0';
2222         irc_mode((buf->is_chanop ? buf->actor : NULL), buf->channel, buf->modes);
2223         buf->modes[0] = buf->is_add ? '+' : '-';
2224         buf->modes_used = 1;
2225         buf->args_used = 0;
2226     }
2227     buf->modes[buf->modes_used++] = ch;
2228     buf->args[buf->args_used++] = ' ';
2229     memcpy(buf->args + buf->args_used, arg, arg_len);
2230     buf->args_used += arg_len;
2231 }
2232
2233 void
2234 mod_chanmode_announce(struct userNode *who, struct chanNode *channel, struct mod_chanmode *change)
2235 {
2236     struct chanmode_buffer chbuf;
2237     unsigned int arg;
2238     struct modeNode *mn;
2239     char int_buff[32], mode = '\0';
2240
2241     assert(change->argc <= change->alloc_argc);
2242     memset(&chbuf, 0, sizeof(chbuf));
2243     chbuf.channel = channel;
2244     chbuf.actor = who;
2245     chbuf.chname_len = strlen(channel->name);
2246
2247     mn = GetUserMode(channel, who);
2248     if ((mn && (mn->modes & MODE_CHANOP)) || off_channel)
2249         chbuf.is_chanop = 1;
2250
2251     /* First remove modes */
2252     chbuf.is_add = 0;
2253     if (change->modes_clear) {
2254         if (mode != '-')
2255             chbuf.modes[chbuf.modes_used++] = mode = '-';
2256 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2257         DO_MODE_CHAR(PRIVATE, 'p');
2258         DO_MODE_CHAR(SECRET, 's');
2259         DO_MODE_CHAR(MODERATED, 'm');
2260         DO_MODE_CHAR(TOPICLIMIT, 't');
2261         DO_MODE_CHAR(INVITEONLY, 'i');
2262         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2263         DO_MODE_CHAR(LIMIT, 'l');
2264         DO_MODE_CHAR(DELAYJOINS, 'D');
2265         DO_MODE_CHAR(REGONLY, 'r');
2266         DO_MODE_CHAR(NOCOLORS, 'c');
2267         DO_MODE_CHAR(NOCTCPS, 'C');
2268         DO_MODE_CHAR(STRIPCOLOR, 'S');
2269         DO_MODE_CHAR(MODUNREG, 'M');
2270         DO_MODE_CHAR(NONOTICE, 'N');
2271         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2272         DO_MODE_CHAR(NOAMSG, 'T');
2273         DO_MODE_CHAR(OPERSONLY, 'O');
2274         // uncomment this for ssl support
2275         //DO_MODE_CHAR(SSLONLY, 'z');
2276 #undef DO_MODE_CHAR
2277         if (change->modes_clear & channel->modes & MODE_KEY)
2278             mod_chanmode_append(&chbuf, 'k', channel->key);
2279     }
2280     for (arg = 0; arg < change->argc; ++arg) {
2281         if (!(change->args[arg].mode & MODE_REMOVE))
2282             continue;
2283         if (mode != '-')
2284             chbuf.modes[chbuf.modes_used++] = mode = '-';
2285         switch (change->args[arg].mode & ~MODE_REMOVE) {
2286         case MODE_BAN:
2287             mod_chanmode_append(&chbuf, 'b', change->args[arg].hostmask);
2288             break;
2289         default:
2290             if (change->args[arg].mode & MODE_CHANOP)
2291                 mod_chanmode_append(&chbuf, 'o', change->args[arg].member->user->numeric);
2292             if (change->args[arg].mode & MODE_VOICE)
2293                 mod_chanmode_append(&chbuf, 'v', change->args[arg].member->user->numeric);
2294             break;
2295         }
2296     }
2297
2298     /* Then set them */
2299     chbuf.is_add = 1;
2300     if (change->modes_set) {
2301         if (mode != '+')
2302             chbuf.modes[chbuf.modes_used++] = mode = '+';
2303 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2304         DO_MODE_CHAR(PRIVATE, 'p');
2305         DO_MODE_CHAR(SECRET, 's');
2306         DO_MODE_CHAR(MODERATED, 'm');
2307         DO_MODE_CHAR(TOPICLIMIT, 't');
2308         DO_MODE_CHAR(INVITEONLY, 'i');
2309         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2310         DO_MODE_CHAR(DELAYJOINS, 'D');
2311         DO_MODE_CHAR(REGONLY, 'r');
2312         DO_MODE_CHAR(NOCOLORS, 'c');
2313         DO_MODE_CHAR(NOCTCPS, 'C');
2314         DO_MODE_CHAR(STRIPCOLOR, 'S');
2315         DO_MODE_CHAR(MODUNREG, 'M');
2316         DO_MODE_CHAR(NONOTICE, 'N');
2317         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2318         DO_MODE_CHAR(NOAMSG, 'T');
2319         DO_MODE_CHAR(OPERSONLY, 'O');
2320         // uncomment this for ssl support
2321         //DO_MODE_CHAR(SSLONLY, 'z');
2322 #undef DO_MODE_CHAR
2323         if(change->modes_set & MODE_KEY)
2324             mod_chanmode_append(&chbuf, 'k', change->new_key);
2325         if(change->modes_set & MODE_LIMIT) {
2326             sprintf(int_buff, "%d", change->new_limit);
2327             mod_chanmode_append(&chbuf, 'l', int_buff);
2328         }
2329     }
2330     for (arg = 0; arg < change->argc; ++arg) {
2331         if (change->args[arg].mode & MODE_REMOVE)
2332             continue;
2333         if (mode != '+')
2334             chbuf.modes[chbuf.modes_used++] = mode = '+';
2335         switch (change->args[arg].mode) {
2336         case MODE_BAN:
2337             mod_chanmode_append(&chbuf, 'b', change->args[arg].hostmask);
2338             break;
2339         default:
2340             if (change->args[arg].mode & MODE_CHANOP)
2341                 mod_chanmode_append(&chbuf, 'o', change->args[arg].member->user->numeric);
2342             if (change->args[arg].mode & MODE_VOICE)
2343                 mod_chanmode_append(&chbuf, 'v', change->args[arg].member->user->numeric);
2344             break;
2345         }
2346     }
2347
2348     /* Flush the buffer and apply changes locally */
2349     if (chbuf.modes_used > 0) {
2350         memcpy(chbuf.modes + chbuf.modes_used, chbuf.args, chbuf.args_used);
2351         chbuf.modes[chbuf.modes_used + chbuf.args_used] = '\0';
2352         irc_mode((chbuf.is_chanop ? chbuf.actor : NULL), chbuf.channel, chbuf.modes);
2353     }
2354     mod_chanmode_apply(who, channel, change);
2355 }
2356
2357 char *
2358 mod_chanmode_format(struct mod_chanmode *change, char *outbuff)
2359 {
2360     unsigned int used = 0;
2361     assert(change->argc <= change->alloc_argc);
2362     if (change->modes_clear) {
2363         outbuff[used++] = '-';
2364 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) outbuff[used++] = CHAR
2365         DO_MODE_CHAR(PRIVATE, 'p');
2366         DO_MODE_CHAR(SECRET, 's');
2367         DO_MODE_CHAR(MODERATED, 'm');
2368         DO_MODE_CHAR(TOPICLIMIT, 't');
2369         DO_MODE_CHAR(INVITEONLY, 'i');
2370         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2371         DO_MODE_CHAR(LIMIT, 'l');
2372         DO_MODE_CHAR(KEY, 'k');
2373         DO_MODE_CHAR(DELAYJOINS, 'D');
2374         DO_MODE_CHAR(REGONLY, 'r');
2375         DO_MODE_CHAR(NOCOLORS, 'c');
2376         DO_MODE_CHAR(NOCTCPS, 'C');
2377         DO_MODE_CHAR(STRIPCOLOR, 'S');
2378         DO_MODE_CHAR(MODUNREG, 'M');
2379         DO_MODE_CHAR(NONOTICE, 'N');
2380         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2381         DO_MODE_CHAR(NOAMSG, 'T');
2382         DO_MODE_CHAR(OPERSONLY, 'O');
2383         // uncomment this for ssl support
2384         //DO_MODE_CHAR(SSLONLY, 'z');
2385 #undef DO_MODE_CHAR
2386     }
2387     if (change->modes_set) {
2388         outbuff[used++] = '+';
2389 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) outbuff[used++] = CHAR
2390         DO_MODE_CHAR(PRIVATE, 'p');
2391         DO_MODE_CHAR(SECRET, 's');
2392         DO_MODE_CHAR(MODERATED, 'm');
2393         DO_MODE_CHAR(TOPICLIMIT, 't');
2394         DO_MODE_CHAR(INVITEONLY, 'i');
2395         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2396         DO_MODE_CHAR(DELAYJOINS, 'D');
2397         DO_MODE_CHAR(REGONLY, 'r');
2398         DO_MODE_CHAR(NOCOLORS, 'c');
2399         DO_MODE_CHAR(NOCTCPS, 'C');
2400         DO_MODE_CHAR(STRIPCOLOR, 'S');
2401         DO_MODE_CHAR(MODUNREG, 'M');
2402         DO_MODE_CHAR(NONOTICE, 'N');
2403         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2404         DO_MODE_CHAR(NOAMSG, 'T');
2405         DO_MODE_CHAR(OPERSONLY, 'O');
2406         // uncomment this for ssl support
2407         //DO_MODE_CHAR(SSLONLY, 'z');
2408 #undef DO_MODE_CHAR
2409         switch (change->modes_set & (MODE_KEY|MODE_LIMIT)) {
2410         case MODE_KEY|MODE_LIMIT:
2411             used += sprintf(outbuff+used, "lk %d %s", change->new_limit, change->new_key);
2412             break;
2413         case MODE_KEY:
2414             used += sprintf(outbuff+used, "k %s", change->new_key);
2415             break;
2416         case MODE_LIMIT:
2417             used += sprintf(outbuff+used, "l %d", change->new_limit);
2418             break;
2419         }
2420     }
2421     outbuff[used] = 0;
2422     return outbuff;
2423 }
2424
2425 static int
2426 clear_chanmode(struct chanNode *channel, const char *modes)
2427 {
2428     unsigned int remove;
2429
2430     for (remove = 0; *modes; modes++) {
2431         switch (*modes) {
2432         case 'o': remove |= MODE_CHANOP; break;
2433         case 'v': remove |= MODE_VOICE; break;
2434         case 'p': remove |= MODE_PRIVATE; break;
2435         case 's': remove |= MODE_SECRET; break;
2436         case 'm': remove |= MODE_MODERATED; break;
2437         case 't': remove |= MODE_TOPICLIMIT; break;
2438         case 'i': remove |= MODE_INVITEONLY; break;
2439         case 'n': remove |= MODE_NOPRIVMSGS; break;
2440         case 'k':
2441             remove |= MODE_KEY;
2442             channel->key[0] = '\0';
2443             break;
2444         case 'l':
2445             remove |= MODE_LIMIT;
2446             channel->limit = 0;
2447             break;
2448         case 'b': remove |= MODE_BAN; break;
2449         case 'D': remove |= MODE_DELAYJOINS; break;
2450         case 'r': remove |= MODE_REGONLY; break;
2451         case 'c': remove |= MODE_NOCOLORS;
2452         case 'C': remove |= MODE_NOCTCPS; break;
2453         case 'S': remove |= MODE_STRIPCOLOR; break;
2454         case 'M': remove |= MODE_MODUNREG; break;
2455         case 'N': remove |= MODE_NONOTICE; break;
2456         case 'Q': remove |= MODE_NOQUITMSGS; break;
2457         case 'T': remove |= MODE_NOAMSG; break;
2458         case 'O': remove |= MODE_OPERSONLY; break;
2459         }
2460     }
2461
2462     if (!remove)
2463         return 1;
2464
2465     /* Remove simple modes. */
2466     channel->modes &= ~remove;
2467
2468     /* If removing bans, kill 'em all. */
2469     if ((remove & MODE_BAN) && channel->banlist.used) {
2470         unsigned int i;
2471         for (i=0; i<channel->banlist.used; i++)
2472             free(channel->banlist.list[i]);
2473         channel->banlist.used = 0;
2474     }
2475
2476     /* Remove member modes. */
2477     if ((remove & (MODE_CHANOP | MODE_VOICE)) && channel->members.used) {
2478         int mask = ~(remove & (MODE_CHANOP | MODE_VOICE));
2479         unsigned int i;
2480
2481         for (i = 0; i < channel->members.used; i++)
2482             channel->members.list[i]->modes &= mask;
2483     }
2484
2485     return 1;
2486 }
2487
2488 void
2489 reg_privmsg_func(struct userNode *user, privmsg_func_t handler)
2490 {
2491     unsigned int numeric = user->num_local;
2492     if (numeric >= num_privmsg_funcs) {
2493         int newnum = numeric + 8;
2494         privmsg_funcs = realloc(privmsg_funcs, newnum*sizeof(privmsg_func_t));
2495         memset(privmsg_funcs+num_privmsg_funcs, 0, (newnum-num_privmsg_funcs)*sizeof(privmsg_func_t));
2496         num_privmsg_funcs = newnum;
2497     }
2498     if (privmsg_funcs[numeric])
2499         log_module(MAIN_LOG, LOG_WARNING, "re-registering new privmsg handler for numeric %d", numeric);
2500     privmsg_funcs[numeric] = handler;
2501 }
2502
2503 void
2504 unreg_privmsg_func(struct userNode *user, privmsg_func_t handler)
2505 {
2506     unsigned int x;
2507
2508     if (!user || handler)
2509       return; /* this really only works with users */
2510
2511     memset(privmsg_funcs+user->num_local, 0, sizeof(privmsg_func_t));
2512
2513     for (x = user->num_local+1; x < num_privmsg_funcs; x++)
2514        memmove(privmsg_funcs+x-1, privmsg_funcs+x, sizeof(privmsg_func_t));
2515
2516     privmsg_funcs = realloc(privmsg_funcs, num_privmsg_funcs*sizeof(privmsg_func_t));
2517     num_privmsg_funcs--;
2518 }
2519
2520
2521 void
2522 reg_notice_func(struct userNode *user, privmsg_func_t handler)
2523 {
2524     unsigned int numeric = user->num_local;
2525     if (numeric >= num_notice_funcs) {
2526         int newnum = numeric + 8;
2527         notice_funcs = realloc(notice_funcs, newnum*sizeof(privmsg_func_t));
2528         memset(notice_funcs+num_notice_funcs, 0, (newnum-num_notice_funcs)*sizeof(privmsg_func_t));
2529         num_notice_funcs = newnum;
2530     }
2531     if (notice_funcs[numeric])
2532         log_module(MAIN_LOG, LOG_WARNING, "re-registering new notice handler for numeric %d", numeric);
2533     notice_funcs[numeric] = handler;
2534 }
2535
2536 void
2537 unreg_notice_func(struct userNode *user, privmsg_func_t handler)
2538 {
2539     unsigned int x;
2540
2541     if (!user || handler)
2542           return; /* this really only works with users */
2543
2544     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
2545
2546     for (x = user->num_local+1; x < num_notice_funcs; x++)
2547        memmove(notice_funcs+x-1, notice_funcs+x, sizeof(privmsg_func_t));
2548
2549     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
2550     notice_funcs = realloc(notice_funcs, num_notice_funcs*sizeof(privmsg_func_t));
2551     num_notice_funcs--;
2552 }
2553
2554 void
2555 reg_oper_func(oper_func_t handler)
2556 {
2557     if (of_used == of_size) {
2558         if (of_size) {
2559             of_size <<= 1;
2560             of_list = realloc(of_list, of_size*sizeof(oper_func_t));
2561         } else {
2562             of_size = 8;
2563             of_list = malloc(of_size*sizeof(oper_func_t));
2564         }
2565     }
2566     of_list[of_used++] = handler;
2567 }
2568
2569 static void
2570 call_oper_funcs(struct userNode *user)
2571 {
2572     unsigned int n;
2573     if (IsLocal(user))
2574         return;
2575     for (n=0; n<of_used; n++)
2576         of_list[n](user);
2577 }
2578
2579 static void
2580 send_burst(void)
2581 {
2582     unsigned int i, hop, max_hop=1;
2583     dict_iterator_t it;
2584
2585     /* burst (juped) servers, closest first (except self, which is sent already) */
2586     for (i=0; i<ArrayLength(servers_num); i++)
2587         if (servers_num[i] && servers_num[i]->hops > max_hop)
2588             max_hop = servers_num[i]->hops;
2589     for (hop=1; hop<=max_hop; hop++) {
2590         for (i=0;i<ArrayLength(servers_num);i++) {
2591             if (servers_num[i]
2592                 && (servers_num[i]->hops == hop)
2593                 && (servers_num[i] != self->uplink))
2594                 irc_server(servers_num[i]);
2595         }
2596     }
2597
2598     /* burst local nicks */
2599     for (i=0; i<=self->num_mask; i++)
2600         if (self->users[i])
2601             irc_user(self->users[i]);
2602
2603     /* build dict of unbursted channel names (just copy existing channels) */
2604     unbursted_channels = dict_new();
2605     for (it = dict_first(channels); it; it = iter_next(it))
2606         dict_insert(unbursted_channels, iter_key(it), iter_data(it));
2607 }