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 x3.
   5  *
   6  * x3 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 "nickserv.h"
  22 #include "chanserv.h"
  23 #include "hosthiding.h"
  24 #include "proto-common.c"
  25 #include "opserv.h"
  26
  27 /* Full commands. */
  28 #define CMD_ACCOUNT             "ACCOUNT"
  29 #define CMD_ADMIN               "ADMIN"
  30 #define CMD_ASLL                "ASLL"
  31 #define CMD_AWAY                "AWAY"
  32 #define CMD_BURST               "BURST"
  33 #define CMD_CLEARMODE           "CLEARMODE"
  34 #define CMD_CLOSE               "CLOSE"
  35 #define CMD_CNOTICE             "CNOTICE"
  36 #define CMD_CONNECT             "CONNECT"
  37 #define CMD_CPRIVMSG            "CPRIVMSG"
  38 #define CMD_CREATE              "CREATE"
  39 #define CMD_DESTRUCT            "DESTRUCT"
  40 #define CMD_DESYNCH             "DESYNCH"
  41 #define CMD_DIE                 "DIE"
  42 #define CMD_DNS                 "DNS"
  43 #define CMD_EOB                 "END_OF_BURST"
  44 #define CMD_EOB_ACK             "EOB_ACK"
  45 #define CMD_ERROR               "ERROR"
  46 #define CMD_FAKEHOST            "FAKE"
  47 #define CMD_GET                 "GET"
  48 #define CMD_GLINE               "GLINE"
  49 #define CMD_HASH                "HASH"
  50 #define CMD_HELP                "HELP"
  51 #define CMD_INFO                "INFO"
  52 #define CMD_INVITE              "INVITE"
  53 #define CMD_ISON                "ISON"
  54 #define CMD_JOIN                "JOIN"
  55 #define CMD_JUPE                "JUPE"
  56 #define CMD_KICK                "KICK"
  57 #define CMD_KILL                "KILL"
  58 #define CMD_LINKS               "LINKS"
  59 #define CMD_LIST                "LIST"
  60 #define CMD_LUSERS              "LUSERS"
  61 #define CMD_MAP                 "MAP"
  62 #define CMD_MARK                "MARK"
  63 #define CMD_MODE                "MODE"
  64 #define CMD_MOTD                "MOTD"
  65 #define CMD_NAMES               "NAMES"
  66 #define CMD_NICK                "NICK"
  67 #define CMD_NOTICE              "NOTICE"
  68 #define CMD_OPER                "OPER"
  69 #define CMD_OPMODE              "OPMODE"
  70 #define CMD_PART                "PART"
  71 #define CMD_PASS                "PASS"
  72 #define CMD_PING                "PING"
  73 #define CMD_PONG                "PONG"
  74 #define CMD_POST                "POST"
  75 #define CMD_PRIVMSG             "PRIVMSG"
  76 #define CMD_PRIVS               "PRIVS"
  77 #define CMD_PROTO               "PROTO"
  78 #define CMD_QUIT                "QUIT"
  79 #define CMD_REHASH              "REHASH"
  80 #define CMD_RESET               "RESET"
  81 #define CMD_RESTART             "RESTART"
  82 #define CMD_RPING               "RPING"
  83 #define CMD_RPONG               "RPONG"
  84 #define CMD_SERVER              "SERVER"
  85 #define CMD_SERVLIST            "SERVLIST"
  86 #define CMD_SERVSET             "SERVSET"
  87 #define CMD_SET                 "SET"
  88 #define CMD_SETTIME             "SETTIME"
  89 #define CMD_SHUN                "SHUN"
  90 #define CMD_SILENCE             "SILENCE"
  91 #define CMD_SQUERY              "SQUERY"
  92 #define CMD_SQUIT               "SQUIT"
  93 #define CMD_STATS               "STATS"
  94 #define CMD_SVSNICK             "SVSNICK"
  95 #define CMD_SWHOIS              "SWHOIS"
  96 #define CMD_TIME                "TIME"
  97 #define CMD_TOPIC               "TOPIC"
  98 #define CMD_TRACE               "TRACE"
  99 #define CMD_UPING               "UPING"
 100 #define CMD_USER                "USER"
 101 #define CMD_USERHOST            "USERHOST"
 102 #define CMD_USERIP              "USERIP"
 103 #define CMD_VERSION             "VERSION"
 104 #define CMD_WALLCHOPS           "WALLCHOPS"
 105 #define CMD_WALLOPS             "WALLOPS"
 106 #define CMD_WALLHOPS            "WALLHOPS"
 107 #define CMD_WALLUSERS           "WALLUSERS"
 108 #define CMD_WALLVOICES          "WALLVOICES"
 109 #define CMD_WALLHOPS            "WALLHOPS"
 110 #define CMD_WHO                 "WHO"
 111 #define CMD_WHOIS               "WHOIS"
 112 #define CMD_WHOWAS              "WHOWAS"
 113
 114 /* Tokenized commands. */
 115 #define TOK_ACCOUNT             "AC"
 116 #define TOK_ADMIN               "AD"
 117 #define TOK_ASLL                "LL"
 118 #define TOK_AWAY                "A"
 119 #define TOK_BURST               "B"
 120 #define TOK_CLEARMODE           "CM"
 121 #define TOK_CLOSE               "CLOSE"
 122 #define TOK_CNOTICE             "CN"
 123 #define TOK_CONNECT             "CO"
 124 #define TOK_CPRIVMSG            "CP"
 125 #define TOK_CREATE              "C"
 126 #define TOK_DESTRUCT            "DE"
 127 #define TOK_DESYNCH             "DS"
 128 #define TOK_DIE                 "DIE"
 129 #define TOK_DNS                 "DNS"
 130 #define TOK_EOB                 "EB"
 131 #define TOK_EOB_ACK             "EA"
 132 #define TOK_ERROR               "Y"
 133 #define TOK_EXEMPT              "EX"
 134 #define TOK_FAKEHOST            "FA"
 135 #define TOK_GET                 "GET"
 136 #define TOK_GLINE               "GL"
 137 #define TOK_HASH                "HASH"
 138 #define TOK_HELP                "HELP"
 139 #define TOK_INFO                "F"
 140 #define TOK_INVITE              "I"
 141 #define TOK_ISON                "ISON"
 142 #define TOK_JOIN                "J"
 143 #define TOK_JUPE                "JU"
 144 #define TOK_KICK                "K"
 145 #define TOK_KILL                "D"
 146 #define TOK_LINKS               "LI"
 147 #define TOK_LIST                "LIST"
 148 #define TOK_LUSERS              "LU"
 149 #define TOK_MAP                 "MAP"
 150 #define TOK_MARK                "MK"
 151 #define TOK_MODE                "M"
 152 #define TOK_MOTD                "MO"
 153 #define TOK_NAMES               "E"
 154 #define TOK_NICK                "N"
 155 #define TOK_NOTICE              "O"
 156 #define TOK_OPER                "OPER"
 157 #define TOK_OPMODE              "OM"
 158 #define TOK_PART                "L"
 159 #define TOK_PASS                "PA"
 160 #define TOK_PING                "G"
 161 #define TOK_PONG                "Z"
 162 #define TOK_POST                "POST"
 163 #define TOK_PRIVMSG             "P"
 164 #define TOK_PRIVS               "PRIVS"
 165 #define TOK_PROTO               "PROTO"
 166 #define TOK_QUIT                "Q"
 167 #define TOK_REHASH              "REHASH"
 168 #define TOK_RESET               "RESET"
 169 #define TOK_RESTART             "RESTART"
 170 #define TOK_RPING               "RI"
 171 #define TOK_RPONG               "RO"
 172 #define TOK_SERVER              "S"
 173 #define TOK_SERVLIST            "SERVSET"
 174 #define TOK_SERVSET             "SERVSET"
 175 #define TOK_SET                 "SET"
 176 #define TOK_SETTIME             "SE"
 177 #define TOK_SHUN                "SU"
 178 #define TOK_SILENCE             "U"
 179 #define TOK_SQUERY              "SQUERY"
 180 #define TOK_SQUIT               "SQ"
 181 #define TOK_STATS               "R"
 182 #define TOK_SVSNICK             "SN"
 183 #define TOK_SWHOIS              "SW"
 184 #define TOK_TIME                "TI"
 185 #define TOK_TOPIC               "T"
 186 #define TOK_TRACE               "TR"
 187 #define TOK_UPING               "UP"
 188 #define TOK_USER                "USER"
 189 #define TOK_USERHOST            "USERHOST"
 190 #define TOK_USERIP              "USERIP"
 191 #define TOK_VERSION             "V"
 192 #define TOK_WALLCHOPS           "WC"
 193 #define TOK_WALLOPS             "WA"
 194 #define TOK_WALLHOPS            "WH"
 195 #define TOK_WALLUSERS           "WU"
 196 #define TOK_WALLVOICES          "WV"
 197 #define TOK_WALLHOPS            "WH"
 198 #define TOK_WHO                 "H"
 199 #define TOK_WHOIS               "W"
 200 #define TOK_WHOWAS              "X"
 201
 202 /* Protocol messages; aliased to full commands or tokens depending
 203    on compile-time configuration. ircu prefers tokens WITH THE
 204    EXCEPTION OF THE SERVER AND PASS COMMANDS, which cannot be
 205    tokenized, because clients' (ie. a linking server) commands are
 206    only checked against the full command list.
 207 */
 208 #if defined(ENABLE_TOKENS)
 209 #define TYPE(NAME)              TOK_ ## NAME
 210 #else /* !ENABLE_TOKENS */
 211 #define TYPE(NAME)              CMD_ ## NAME
 212 #endif /* ENABLE_TOKENS */
 213
 214 #define P10_ACCOUNT             TYPE(ACCOUNT)
 215 #define P10_ADMIN               TYPE(ADMIN)
 216 #define P10_ASLL                TYPE(ASLL)
 217 #define P10_AWAY                TYPE(AWAY)
 218 #define P10_BURST               TYPE(BURST)
 219 #define P10_CLEARMODE           TYPE(CLEARMODE)
 220 #define P10_CLOSE               TYPE(CLOSE)
 221 #define P10_CNOTICE             TYPE(CNOTICE)
 222 #define P10_CONNECT             TYPE(CONNECT)
 223 #define P10_CPRIVMSG            TYPE(CPRIVMSG)
 224 #define P10_CREATE              TYPE(CREATE)
 225 #define P10_DESTRUCT            TYPE(DESTRUCT)
 226 #define P10_DESYNCH             TYPE(DESYNCH)
 227 #define P10_DIE                 TYPE(DIE)
 228 #define P10_DNS                 TYPE(DNS)
 229 #define P10_EOB                 TYPE(EOB)
 230 #define P10_EOB_ACK             TYPE(EOB_ACK)
 231 #define P10_ERROR               TYPE(ERROR)
 232 #define P10_FAKEHOST            TYPE(FAKEHOST)
 233 #define P10_GET                 TYPE(GET)
 234 #define P10_GLINE               TYPE(GLINE)
 235 #define P10_HASH                TYPE(HASH)
 236 #define P10_HELP                TYPE(HELP)
 237 #define P10_INFO                TYPE(INFO)
 238 #define P10_INVITE              TYPE(INVITE)
 239 #define P10_ISON                TYPE(ISON)
 240 #define P10_JOIN                TYPE(JOIN)
 241 #define P10_JUPE                TYPE(JUPE)
 242 #define P10_KICK                TYPE(KICK)
 243 #define P10_KILL                TYPE(KILL)
 244 #define P10_LINKS               TYPE(LINKS)
 245 #define P10_LIST                TYPE(LIST)
 246 #define P10_LUSERS              TYPE(LUSERS)
 247 #define P10_MAP                 TYPE(MAP)
 248 #define P10_MARK                TYPE(MARK)
 249 #define P10_MODE                TYPE(MODE)
 250 #define P10_MOTD                TYPE(MOTD)
 251 #define P10_NAMES               TYPE(NAMES)
 252 #define P10_NICK                TYPE(NICK)
 253 #define P10_NOTICE              TYPE(NOTICE)
 254 #define P10_OPER                TYPE(OPER)
 255 #define P10_OPMODE              TYPE(OPMODE)
 256 #define P10_PART                TYPE(PART)
 257 #define P10_PASS                CMD_PASS
 258 #define P10_PING                TYPE(PING)
 259 #define P10_PONG                TYPE(PONG)
 260 #define P10_POST                TYPE(POST)
 261 #define P10_PRIVMSG             TYPE(PRIVMSG)
 262 #define P10_PRIVS               TYPE(PRIVS)
 263 #define P10_PROTO               TYPE(PROTO)
 264 #define P10_QUIT                TYPE(QUIT)
 265 #define P10_REHASH              TYPE(REHASH)
 266 #define P10_RESET               TYPE(RESET)
 267 #define P10_RESTART             TYPE(RESTART)
 268 #define P10_RPING               TYPE(RPING)
 269 #define P10_RPONG               TYPE(RPONG)
 270 #define P10_SERVER              CMD_SERVER
 271 #define P10_SERVLIST            TYPE(SERVLIST)
 272 #define P10_SERVSET             TYPE(SERVSET)
 273 #define P10_SET                 TYPE(SET)
 274 #define P10_SETTIME             TYPE(SETTIME)
 275 #define P10_SHUN                TYPE(SHUN)
 276 #define P10_SILENCE             TYPE(SILENCE)
 277 #define P10_SQUERY              TYPE(SQUERY)
 278 #define P10_SQUIT               TYPE(SQUIT)
 279 #define P10_STATS               TYPE(STATS)
 280 #define P10_SVSNICK             TYPE(SVSNICK)
 281 #define P10_SWHOIS              TYPE(SWHOIS)
 282 #define P10_TIME                TYPE(TIME)
 283 #define P10_TOPIC               TYPE(TOPIC)
 284 #define P10_TRACE               TYPE(TRACE)
 285 #define P10_UPING               TYPE(UPING)
 286 #define P10_USER                TYPE(USER)
 287 #define P10_USERHOST            TYPE(USERHOST)
 288 #define P10_USERIP              TYPE(USERIP)
 289 #define P10_VERSION             TYPE(VERSION)
 290 #define P10_WALLCHOPS           TYPE(WALLCHOPS)
 291 #define P10_WALLOPS             TYPE(WALLOPS)
 292 #define P10_WALLHOPS            TYPE(WALLHOPS)
 293 #define P10_WALLUSERS           TYPE(WALLUSERS)
 294 #define P10_WALLVOICES          TYPE(WALLVOICES)
 295 #define P10_WHO                 TYPE(WHO)
 296 #define P10_WHOIS               TYPE(WHOIS)
 297 #define P10_WHOWAS              TYPE(WHOWAS)
 298 #define P10_EXEMPT              TYPE(EXEMPT)
 299
 300 /* Servers claiming to have a boot or link time before PREHISTORY
 301  * trigger errors to the log.  We hope no server has been running
 302  * constantly since September 1994.  :)
 303  */
 304 #define PREHISTORY 780000000
 305
 306 static struct server *servers_num[64*64];
 307 static privmsg_func_t *privmsg_funcs;
 308 static unsigned int num_privmsg_funcs;
 309 static privmsg_func_t *notice_funcs;
 310 static unsigned int num_notice_funcs;
 311 static struct dict *unbursted_channels;
 312 static char *his_servername;
 313 static char *his_servercomment;
 314 static int extended_accounts;
 315
 316 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);
 317
 318 extern int off_channel;
 319
 320 static int parse_oplevel(char *str);
 321
 322 /* Numerics can be XYY, XYYY, or XXYYY; with X's identifying the
 323  * server and Y's indentifying the client on that server. */
 324 struct server*
 325 GetServerN(const char *numeric)
 326 {
 327     switch (strlen(numeric)) {
 328     default:
 329         return servers_num[base64toint(numeric, 2)];
 330     case 4:
 331     case 3:
 332     case 1:
 333         return servers_num[base64toint(numeric, 1)];
 334     case 0:
 335         return NULL;
 336     }
 337 }
 338
 339 struct userNode*
 340 GetUserN(const char *numeric) /* using numeric */
 341 {
 342     struct userNode *un;
 343     struct server *s;
 344     int n, slen, ulen;
 345
 346     switch (strlen(numeric)) {
 347     default:
 348         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too long!", numeric);
 349         return NULL;
 350     case 5: slen = 2; ulen = 3; break;
 351     case 4: slen = 1; ulen = 3; break;
 352     case 3: slen = 1; ulen = 2; break;
 353     case 2: case 1: case 0:
 354         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): numeric too short!", numeric);
 355         return NULL;
 356     }
 357     if (!(s = servers_num[base64toint(numeric, slen)])) {
 358         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s): couldn't find server (len=%d)!", numeric, slen);
 359         return NULL;
 360     }
 361     n = base64toint(numeric+slen, ulen) & s->num_mask;
 362     if (!(un = s->users[n])) {
 363         log_module(MAIN_LOG, LOG_WARNING, "GetUserN(%s) couldn't find user!", numeric);
 364     }
 365     return un;
 366 }
 367
 368 static void
 369 privmsg_user_helper(struct userNode *un, void *data)
 370 {
 371     struct privmsg_desc *pd = data;
 372     unsigned int num = un->num_local;
 373     if (!pd->is_notice) {
 374         if ((num < num_privmsg_funcs) && privmsg_funcs[num]) {
 375             privmsg_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 376         }
 377     } else {
 378         if ((num < num_notice_funcs) && notice_funcs[num]) {
 379             notice_funcs[num](pd->user, un, pd->text, pd->is_qualified);
 380         }
 381     }
 382 }
 383
 384 /* equiv to user doing /connect server port target */
 385 void irc_connect(struct userNode *user, char *server, unsigned int port, struct server *target)
 386 {
 387     putsock("%s " P10_CONNECT " %s %d %s", user->numeric, server, port, target->numeric);
 388 }
 389
 390 void
 391 irc_squit_route(struct server *srv, const char *message, ...)
 392 {
 393     va_list arg_list;
 394     char buffer[MAXLEN];
 395     va_start(arg_list, message);
 396     vsnprintf(buffer, MAXLEN-2, message, arg_list);
 397     buffer[MAXLEN-1] = 0;
 398
 399     /* When would we squit ourselves exactly?? -Rubin */
 400     if(srv == self && cManager.uplink->state == CONNECTED ) {
 401         unsigned int i;
 402
 403         /* Quit all clients linked to me. */
 404         for(i = 0; i <= self->num_mask; i++) {
 405             if(!self->users[i])
 406                 continue;
 407             irc_quit(self->users[i], buffer);
 408         }
 409     }
 410
 411     putsock("%s " P10_SQUIT " %s %d :%s", self->numeric, srv->name, 0, buffer);
 412
 413     if(srv == self) {
 414         /* Force a reconnect to the currently selected server. */
 415         cManager.uplink->tries = 0;
 416         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", buffer);
 417         close_socket();
 418     }
 419 }
 420
 421 void
 422 irc_server(struct server *srv)
 423 {
 424     char extranum[COMBO_NUMERIC_LEN+1];
 425
 426     inttobase64(extranum, srv->num_mask, (srv->numeric[1] || (srv->num_mask >= 64*64)) ? 3 : 2);
 427     if (srv == self) {
 428         putsock(P10_SERVER " %s %d %li %li J10 %s%s +s6 :%s",
 429                 srv->name, srv->hops+1, srv->boot, srv->link, srv->numeric, extranum, srv->description);
 430     } else {
 431         putsock("%s " P10_SERVER " %s %d %li %li %c10 %s%s +s6 :%s",
 432                 self->numeric, srv->name, srv->hops+1, srv->boot, srv->link, (srv->self_burst ? 'J' : 'P'), srv->numeric, extranum, srv->description);
 433     }
 434 }
 435
 436 static void
 437 irc_p10_pton(irc_in_addr_t *ip, const char *input)
 438 {
 439     if (strlen(input) == 6) {
 440         unsigned int value;
 441         memset(ip, 0, 6 * sizeof(ip->in6[0]));
 442         value = base64toint(input, 6);
 443         if (value)
 444             ip->in6[5] = htons(65535);
 445         ip->in6[6] = htons(value >> 16);
 446         ip->in6[7] = htons(value & 65535);
 447     } else {
 448         unsigned int pos = 0;
 449         do {
 450             if (*input == '_') {
 451                 unsigned int left;
 452                 for (left = (25 - strlen(input)) / 3; left; left--)
 453                     ip->in6[pos++] = 0;
 454                 input++;
 455             } else {
 456                 ip->in6[pos++] = ntohs(base64toint(input, 3));
 457                 input += 3;
 458             }
 459         } while (pos < 8);
 460     }
 461 }
 462
 463 static void
 464 irc_p10_ntop(char *output, const irc_in_addr_t *ip)
 465 {
 466     if (!irc_in_addr_is_valid(*ip)) {
 467         strcpy(output, "AAAAAA");
 468     } else if (irc_in_addr_is_ipv4(*ip)) {
 469         unsigned int in4;
 470         in4 = (ntohs(ip->in6[6]) << 16) | ntohs(ip->in6[7]);
 471         inttobase64(output, in4, 6);
 472         output[6] = '\0';
 473     } else if (irc_in_addr_is_ipv6(*ip)) {
 474         unsigned int max_start, max_zeros, curr_zeros, zero, ii;
 475         /* Can start by printing out the leading non-zero parts. */
 476         for (ii = 0; (ip->in6[ii]) && (ii < 8); ++ii) {
 477             inttobase64(output, ntohs(ip->in6[ii]), 3);
 478             output += 3;
 479         }
 480         /* Find the longest run of zeros. */
 481         for (max_start = zero = ii, max_zeros = curr_zeros = 0; ii < 8; ++ii) {
 482             if (!ip->in6[ii])
 483                 curr_zeros++;
 484             else if (curr_zeros > max_zeros) {
 485                 max_start = ii - curr_zeros;
 486                 max_zeros = curr_zeros;
 487                 curr_zeros = 0;
 488             }
 489         }
 490         if (curr_zeros > max_zeros) {
 491             max_start = ii - curr_zeros;
 492             max_zeros = curr_zeros;
 493             curr_zeros = 0;
 494         }
 495         /* Print the rest of the address */
 496         for (ii = zero; ii < 8; ) {
 497             if ((ii == max_start) && max_zeros) {
 498                 *output++ = '_';
 499                 ii += max_zeros;
 500             } else {
 501                 inttobase64(output, ntohs(ip->in6[ii]), 3);
 502                 output += 3;
 503             }
 504         }
 505         *output = '\0';
 506     } else {
 507         strcpy(output, "???");
 508     }
 509 }
 510
 511 void
 512 irc_user(struct userNode *user)
 513 {
 514     char b64ip[25];
 515     if (!user)
 516         return;
 517     irc_p10_ntop(b64ip, &user->ip);
 518     if (user->modes) {
 519         int modelen;
 520         char modes[32];
 521
 522         modelen = 0;
 523         if (IsOper(user))
 524             modes[modelen++] = 'o';
 525         if (IsInvisible(user))
 526             modes[modelen++] = 'i';
 527         if (IsWallOp(user))
 528             modes[modelen++] = 'w';
 529         if (IsService(user))
 530             modes[modelen++] = 'k';
 531         if (IsServNotice(user))
 532             modes[modelen++] = 's';
 533         if (IsDeaf(user))
 534             modes[modelen++] = 'd';
 535         if (IsGlobal(user))
 536             modes[modelen++] = 'g';
 537         // sethost - reed/apples
 538         // if (IsHelperIrcu(user))
 539         if (IsSetHost(user))
 540             modes[modelen++] = 'h';
 541         if (IsFakeHost(user))
 542             modes[modelen++] = 'f';
 543         if (IsHiddenHost(user))
 544             modes[modelen++] = 'x';
 545         modes[modelen] = 0;
 546
 547         /* we don't need to put the + in modes because it's in the format string. */
 548         putsock("%s " P10_NICK " %s %d %li %s %s +%s %s %s :%s",
 549                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, modes, b64ip, user->numeric, user->info);
 550     } else {
 551         putsock("%s " P10_NICK " %s %d %li %s %s %s %s :%s",
 552                 user->uplink->numeric, user->nick, user->uplink->hops+1, user->timestamp, user->ident, user->hostname, b64ip, user->numeric, user->info);
 553     }
 554 }
 555
 556 void
 557 irc_rename(struct userNode *user, const char *new_handle)
 558 {
 559     if(extended_accounts)
 560         putsock("%s " P10_ACCOUNT " %s M %s", self->numeric, user->numeric, new_handle);
 561 }
 562
 563 void
 564 irc_delete(struct userNode *user)
 565 {
 566     if(extended_accounts)
 567         putsock("%s " P10_ACCOUNT " %s U", self->numeric, user->numeric);
 568 }
 569
 570 void
 571 irc_account(struct userNode *user, const char *stamp, time_t timestamp)
 572 {
 573     if(extended_accounts)
 574         putsock("%s " P10_ACCOUNT " %s R %s %lu", self->numeric, user->numeric, stamp, timestamp);
 575     else
 576         putsock("%s " P10_ACCOUNT " %s %s %lu", self->numeric, user->numeric, stamp, timestamp);
 577 }
 578
 579 void
 580 irc_fakehost(struct userNode *user, const char *host)
 581 {
 582     putsock("%s " P10_FAKEHOST " %s %s", self->numeric, user->numeric, host);
 583 }
 584
 585 void
 586 irc_regnick(UNUSED_ARG(struct userNode *user))
 587 {
 588     /* no operation here */
 589 }
 590
 591 void
 592 irc_nick(struct userNode *user, UNUSED_ARG(const char *old_nick))
 593 {
 594     putsock("%s " P10_NICK " %s "FMT_TIME_T, user->numeric, user->nick, now);
 595 }
 596
 597 void
 598 irc_fetchtopic(struct userNode *from, const char *to)
 599 {
 600     if (!from || !to)
 601         return;
 602     putsock("%s " P10_TOPIC " %s", from->numeric, to);
 603 }
 604
 605 void
 606 irc_squit(struct server *srv, const char *message, const char *service_message)
 607 {
 608     if (!service_message)
 609         service_message = message;
 610
 611     /* Are we leaving the network? */
 612     if (srv == self && cManager.uplink->state == CONNECTED) {
 613         unsigned int i;
 614
 615         /* Quit all clients linked to me. */
 616         for (i = 0; i <= self->num_mask; i++) {
 617             if (!self->users[i])
 618                 continue;
 619             irc_quit(self->users[i], service_message);
 620         }
 621     }
 622
 623     putsock("%s " P10_SQUIT " %s %d :%s", self->numeric, srv->name, 0, message);
 624
 625     if (srv == self) {
 626         /* Force a reconnect to the currently selected server. */
 627         cManager.uplink->tries = 0;
 628         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", message);
 629         close_socket();
 630     }
 631 }
 632
 633 void
 634 irc_wallchops(struct userNode *from, const char *to, const char *message)
 635 {
 636     putsock("%s " P10_WALLCHOPS " %s :%s", from->numeric, to, message);
 637 }
 638
 639 void
 640 irc_wallops(const char *format, ...)
 641 {
 642     va_list arg_list;
 643     char buffer[MAXLEN];
 644     va_start(arg_list, format);
 645     vsnprintf(buffer, MAXLEN-2, format, arg_list);
 646     buffer[MAXLEN-1] = 0;
 647     putsock("%s " P10_WALLOPS " :%s", self->numeric, buffer);
 648 }
 649
 650 void
 651 irc_notice(struct userNode *from, const char *to, const char *message)
 652 {
 653     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to, message);
 654 }
 655
 656 void
 657 irc_notice_user(struct userNode *from, struct userNode *to, const char *message)
 658 {
 659     putsock("%s " P10_NOTICE " %s :%s", from->numeric, to->numeric, message);
 660 }
 661
 662 void
 663 irc_privmsg(struct userNode *from, const char *to, const char *message)
 664 {
 665     putsock("%s " P10_PRIVMSG " %s :%s", from->numeric, to, message);
 666 }
 667
 668 void
 669 irc_eob(void)
 670 {
 671     putsock("%s " P10_EOB, self->numeric);
 672 }
 673
 674 void
 675 irc_eob_ack(void)
 676 {
 677     putsock("%s " P10_EOB_ACK, self->numeric);
 678 }
 679
 680 void
 681 irc_ping(const char *payload)
 682 {
 683     putsock("%s " P10_PING " :%s", self->numeric, payload);
 684 }
 685
 686 void
 687 irc_pong(const char *who, const char *data)
 688 {
 689     putsock("%s " P10_PONG " %s :%s", self->numeric, who, data);
 690 }
 691
 692 void
 693 irc_pong_asll(const char *who, const char *orig_ts)
 694 {
 695     char *delim;
 696     struct timeval orig;
 697     struct timeval now;
 698     int diff;
 699
 700     orig.tv_sec = strtoul(orig_ts, &delim, 10);
 701     orig.tv_usec = (*delim == '.') ? strtoul(delim + 1, NULL, 10) : 0;
 702     gettimeofday(&now, NULL);
 703     diff = (now.tv_sec - orig.tv_sec) * 1000 + (now.tv_usec - orig.tv_usec) / 1000;
 704     putsock("%s " P10_PONG " %s %s %d " FMT_TIME_T ".%06u", self->numeric, who, orig_ts, diff, now.tv_sec, (unsigned)now.tv_usec);
 705 }
 706
 707 void
 708 irc_pass(const char *passwd)
 709 {
 710     putsock(P10_PASS " :%s", passwd);
 711 }
 712
 713 void
 714 irc_introduce(const char *passwd)
 715 {
 716     void timed_send_ping(void *data);
 717
 718     self->self_burst = self->burst = 1;
 719     irc_pass(passwd);
 720     irc_server(self);
 721     burst_length = 0;
 722     timeq_add(now + ping_freq, timed_send_ping, 0);
 723 }
 724
 725 void
 726 irc_gline(struct server *srv, struct gline *gline, int silent)
 727 {
 728     putsock("%s " P10_GLINE " %s +%s %ld :%s<%s> %s",
 729             self->numeric, (srv ? srv->numeric : "*"), gline->target, gline->expires-now, silent ? "AUTO " : "", gline->issuer, gline->reason);
 730 }
 731
 732 void
 733 irc_shun(struct server *srv, struct shun *shun)
 734 {
 735     putsock("%s " P10_SHUN " %s +%s %ld :<%s> %s",
 736             self->numeric, (srv ? srv->numeric : "*"), shun->target, shun->expires-now, shun->issuer, shun->reason);
 737 }
 738
 739 void
 740 irc_settime(const char *srv_name_mask, time_t new_time)
 741 {
 742     ioset_set_time(new_time);
 743     if (!strcmp(srv_name_mask, "*"))
 744         srv_name_mask = "";
 745     putsock("%s " P10_SETTIME " " FMT_TIME_T " %s", self->numeric, new_time, srv_name_mask);
 746 }
 747
 748 void
 749 irc_ungline(const char *mask)
 750 {
 751     putsock("%s " P10_GLINE " * -%s", self->numeric, mask);
 752 }
 753
 754 void
 755 irc_unshun(const char *mask)
 756 {
 757     putsock("%s " P10_SHUN " * -%s", self->numeric, mask);
 758 }
 759
 760 static void
 761 irc_burst(struct chanNode *chan)
 762 {
 763     char burst_line[512];
 764     int pos, base_len, len;
 765     struct modeNode *mn;
 766     struct banNode *bn;
 767     struct exemptNode *en;
 768     long last_mode=-1;
 769     unsigned int n;
 770
 771     base_len = sprintf(burst_line, "%s " P10_BURST " %s " FMT_TIME_T " ",
 772                        self->numeric, chan->name, chan->timestamp);
 773     len = irc_make_chanmode(chan, burst_line+base_len);
 774     pos = base_len + len;
 775     if (len)
 776         burst_line[pos++] = ' ';
 777
 778     if(chan->members.used < 1)
 779         return; /* dont burst empty channels (created by discrims) */
 780     /* dump the users */
 781     for (n=0; n<chan->members.used; n++) {
 782         mn = chan->members.list[n];
 783         if (pos > 500) {
 784             burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 785             putsock("%s", burst_line);
 786             pos = base_len;
 787             last_mode = -1;
 788         }
 789         memcpy(burst_line+pos, mn->user->numeric, strlen(mn->user->numeric));
 790         pos += strlen(mn->user->numeric);
 791         if (mn->modes && (mn->modes != last_mode)) {
 792             last_mode = mn->modes;
 793             burst_line[pos++] = ':';
 794             if (last_mode & MODE_CHANOP)
 795                 burst_line[pos++] = 'o';
 796             if (last_mode & MODE_HALFOP)
 797                 burst_line[pos++] = 'h';
 798             if (last_mode & MODE_VOICE)
 799                 burst_line[pos++] = 'v';
 800         }
 801         if ((n+1)<chan->members.used)
 802             burst_line[pos++] = ',';
 803     }
 804     if (chan->banlist.used) {
 805         /* dump the bans */
 806         if (pos+2+strlen(chan->banlist.list[0]->ban) > 505) {
 807             burst_line[pos-1] = 0;
 808             putsock("%s", burst_line);
 809             pos = base_len;
 810         } else {
 811             burst_line[pos++] = ' ';
 812         }
 813
 814         burst_line[pos++] = ':';
 815         burst_line[pos++] = '%';
 816         base_len = pos;
 817         for (n=0; n<chan->banlist.used; n++) {
 818             bn = chan->banlist.list[n];
 819             len = strlen(bn->ban);
 820             if (pos+len+1 > 510) {
 821                 burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 822                 putsock("%s", burst_line);
 823                 pos = base_len;
 824             }
 825             memcpy(burst_line+pos, bn->ban, len);
 826             pos += len;
 827             burst_line[pos++] = ' ';
 828         }
 829     }
 830     if (chan->exemptlist.used) {
 831         /* dump the exempt */
 832         if (pos+2+strlen(chan->exemptlist.list[0]->exempt) > 505) {
 833             burst_line[pos-1] = 0;
 834             putsock("%s", burst_line);
 835             pos = base_len;
 836         } else {
 837             burst_line[pos++] = ' ';
 838         }
 839
 840         burst_line[pos++] = ' ';
 841         burst_line[pos++] = '~';
 842         burst_line[pos++] = ' ';
 843         base_len = pos;
 844         for (n=0; n<chan->exemptlist.used; n++) {
 845             en = chan->exemptlist.list[n];
 846             len = strlen(en->exempt);
 847             if (pos+len+1 > 510) {
 848                 burst_line[pos-1] = 0; /* -1 to back up over the space or comma */
 849                 putsock("%s", burst_line);
 850                 pos = base_len;
 851             }
 852             memcpy(burst_line+pos, en->exempt, len);
 853             pos += len;
 854             burst_line[pos++] = ' ';
 855         }
 856     }
 857     /* print the last line */
 858     burst_line[pos] = 0;
 859     putsock("%s", burst_line);
 860 }
 861
 862 void
 863 irc_quit(struct userNode *user, const char *message)
 864 {
 865     putsock("%s " P10_QUIT " :%s", user->numeric, message);
 866 }
 867
 868 void
 869 irc_error(const char *to, const char *message)
 870 {
 871     if (to) {
 872         putsock("%s " P10_ERROR " :%s", to, message);
 873     } else {
 874         putsock(":%s " P10_ERROR " :%s", self->name, message);
 875     }
 876 }
 877
 878 void
 879 irc_kill(struct userNode *from, struct userNode *target, const char *message)
 880 {
 881     if (from) {
 882         putsock("%s " P10_KILL " %s :%s!%s (%s)",
 883                 from->numeric, target->numeric, self->name, from->nick, message);
 884     } else {
 885         putsock("%s " P10_KILL " %s :%s (%s)",
 886                 self->numeric, target->numeric, self->name, message);
 887     }
 888 }
 889
 890 void
 891 irc_mode(struct userNode *from, struct chanNode *target, const char *modes)
 892 {
 893     call_channel_mode_funcs(from, target, (char **)&modes, 0);
 894     putsock("%s " P10_MODE " %s %s "FMT_TIME_T,
 895             (from ? from->numeric : self->numeric),
 896             target->name, modes, target->timestamp);
 897 }
 898
 899 /* Added to allow services to mode users
 900    2005 - 8 - 10 by Life4Christ
 901 */
 902 void
 903 irc_umode(struct userNode *target, const char *modes)
 904 {
 905     putsock("%s " P10_MODE " %s %s ",self->numeric,target->nick, modes);
 906 }
 907
 908
 909 void
 910 irc_invite(struct userNode *from, struct userNode *who, struct chanNode *to)
 911 {
 912     putsock("%s " P10_INVITE " %s %s", from->numeric, who->nick, to->name);
 913 }
 914
 915 void
 916 irc_silence(struct userNode *who, const char *mask, int add)
 917 {
 918     putsock("%s " P10_SILENCE " %s %s%s", self->numeric, who->numeric, add ? "+" : "-", mask);
 919 }
 920
 921 void
 922 irc_join(struct userNode *who, struct chanNode *what)
 923 {
 924     if (what->members.used == 1) {
 925         putsock("%s " P10_CREATE " %s %lu",
 926                 who->numeric, what->name, what->timestamp);
 927     } else {
 928         putsock("%s " P10_JOIN " %s %lu", who->numeric, what->name, what->timestamp);
 929     }
 930 }
 931
 932 void
 933 irc_kick(struct userNode *who, struct userNode *target, struct chanNode *channel, const char *msg)
 934 {
 935     const char *numeric;
 936     struct modeNode *mn = GetUserMode(channel, who);
 937     numeric = ((mn && (mn->modes & MODE_CHANOP)) || off_channel) ? who->numeric : self->numeric;
 938     putsock("%s " P10_KICK " %s %s :%s",
 939             numeric, channel->name, target->numeric, msg);
 940 }
 941
 942 void
 943 irc_stats(struct userNode *from, struct server *target, char type)
 944 {
 945     putsock("%s " P10_STATS " %c :%s", from->numeric, type, target->numeric);
 946 }
 947
 948 void
 949 irc_svsnick(struct userNode *from, struct userNode *target, const char *newnick)
 950 {
 951     putsock("%s " P10_SVSNICK " %s %s "FMT_TIME_T, from->uplink->numeric, target->numeric, newnick, now);
 952 }
 953
 954 void
 955 irc_swhois(struct userNode *from, struct userNode *target, const char *message)
 956 {
 957     putsock("%s " P10_SWHOIS " %s %s%s", from->uplink->numeric, target->numeric, message ? ":" : "",
 958                                          message ? message : "");
 959
 960 }
 961
 962 void
 963 irc_part(struct userNode *who, struct chanNode *what, const char *reason)
 964 {
 965     if (reason) {
 966         putsock("%s " P10_PART " %s :%s", who->numeric, what->name, reason);
 967     } else {
 968         putsock("%s " P10_PART " %s", who->numeric, what->name);
 969     }
 970 }
 971
 972 void
 973 irc_topic(struct userNode *service, struct userNode *who, struct chanNode *what, const char *topic)
 974 {
 975
 976    int type = 4;
 977    int host_in_topic = 0;
 978    const char *hstr, *tstr;
 979    char *host, *hostmask;
 980    char shost[MAXLEN];
 981    char sident[MAXLEN];
 982
 983    tstr = conf_get_data("server/type", RECDB_QSTRING);
 984    hstr = conf_get_data("server/host_in_topic", RECDB_QSTRING);
 985    if(tstr)
 986      type = atoi(tstr);
 987    else
 988      type = 4;/* default to 040 style topics */
 989
 990    if (hstr) {
 991       if (IsFakeHost(who))
 992           safestrncpy(shost, who->fakehost, sizeof(shost));
 993       else if (IsSetHost(who)) {
 994           hostmask = strdup(who->sethost);
 995           if ((host = (strrchr(hostmask, '@'))))
 996               *host++ = '\0';
 997           else
 998               host = hostmask;
 999
1000           safestrncpy(sident, hostmask, sizeof(shost));
1001           safestrncpy(shost, host, sizeof(shost));
1002       } else
1003           safestrncpy(shost, who->hostname, sizeof(shost));
1004
1005       host_in_topic = atoi(hstr);
1006    }
1007
1008    if (type == 5) {
1009      putsock("%s " P10_TOPIC " %s %s%s%s%s%s " FMT_TIME_T " " FMT_TIME_T " :%s", service->numeric, what->name,
1010              who->nick, host_in_topic ? "!" : "", host_in_topic ? (IsSetHost(who) ? sident : who->ident) : "",
1011              host_in_topic ? "@" : "", host_in_topic ? shost : "", what->timestamp, now, topic);
1012    } else {
1013      who = service;
1014      putsock("%s " P10_TOPIC " %s :%s", who->numeric, what->name, topic);
1015    }
1016 }
1017
1018 void
1019 irc_raw(const char *what)
1020 {
1021     putsock("%s", what);
1022 }
1023
1024 void
1025 irc_numeric(struct userNode *user, unsigned int num, const char *format, ...)
1026 {
1027     va_list arg_list;
1028     char buffer[MAXLEN];
1029     va_start(arg_list, format);
1030     vsnprintf(buffer, MAXLEN-2, format, arg_list);
1031     buffer[MAXLEN-1] = 0;
1032     putsock(":%s %03d %s %s", self->name, num, user->nick, buffer);
1033 }
1034
1035 static void send_burst(void);
1036
1037 static void
1038 change_nicklen(int new_nicklen)
1039 {
1040     unsigned int nn;
1041     char new_nick[NICKLEN+1];
1042     struct userNode *user;
1043
1044     nicklen = new_nicklen;
1045     /* fix up any users we have here */
1046     for (nn=0; nn<=self->num_mask; nn++) {
1047         if (!(user = self->users[nn]))
1048             continue;
1049         safestrncpy(new_nick, user->nick, sizeof(new_nick));
1050         new_nick[nicklen] = 0;
1051         NickChange(user, new_nick, 1);
1052     }
1053 }
1054
1055 static CMD_FUNC(cmd_whois)
1056 {
1057     struct userNode *from;
1058     struct userNode *who;
1059
1060     if (argc < 3)
1061         return 0;
1062     if (!(from = GetUserH(origin))) {
1063         log_module(MAIN_LOG, LOG_ERROR, "Could not find WHOIS origin user %s", origin);
1064         return 0;
1065     }
1066     if(!(who = GetUserH(argv[2]))) {
1067         irc_numeric(from, ERR_NOSUCHNICK, "%s@%s :No such nick", argv[2], self->name);
1068         return 1;
1069     }
1070     if (IsHiddenHost(who) && !IsOper(from)) {
1071         /* Just stay quiet. */
1072         return 1;
1073     }
1074     irc_numeric(from, RPL_WHOISUSER, "%s %s %s * :%s", who->nick, who->ident, who->hostname, who->info);
1075     if (his_servername && his_servercomment)
1076         irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, his_servername, his_servercomment);
1077     else
1078         irc_numeric(from, RPL_WHOISSERVER, "%s %s :%s", who->nick, who->uplink->name, who->uplink->description);
1079     if (IsOper(who))
1080         irc_numeric(from, RPL_WHOISOPERATOR, "%s :is a megalomaniacal power hungry tyrant", who->nick);
1081     irc_numeric(from, RPL_ENDOFWHOIS, "%s :End of /WHOIS list", who->nick);
1082     return 1;
1083 }
1084
1085 static CMD_FUNC(cmd_server)
1086 {
1087     struct server *srv;
1088     const char *str;
1089
1090     if (argc < 8)
1091         return 0;
1092     if (self->uplink) {
1093         /* another server introduced us */
1094         srv = AddServer(GetServerH(origin), argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
1095         if (!srv)
1096             return 0;
1097         srv->self_burst = argv[5][0] == 'J';
1098         srv->burst = 1;
1099     } else {
1100         /* this must be our uplink */
1101         srv = self->uplink = AddServer(self, argv[1], atoi(argv[2]), atoi(argv[3]), atoi(argv[4]), argv[6], argv[argc-1]);
1102         if (!srv)
1103             return 0;
1104         srv->self_burst = argv[5][0] == 'J';
1105         srv->burst = 1;
1106         if ((argv[7][0] == '+') && !force_n2k) {
1107             log_module(MAIN_LOG, LOG_WARNING, "Got Undernet-style SERVER message but \"force_n2k\" not on.");
1108         }
1109         send_burst();
1110     }
1111
1112     /* Fix up our timestamps if necessary. */
1113     if (srv->boot <= PREHISTORY) {
1114         /* Server from the mists of time.. */
1115         if (srv->hops == 1) {
1116             log_module(MAIN_LOG, LOG_ERROR, "Server %s claims to have booted at time "FMT_TIME_T".  This is absurd.", srv->name, srv->boot);
1117         }
1118     } else if ((str = conf_get_data("server/reliable_clock", RECDB_QSTRING))
1119                && enabled_string(str)) {
1120         /* If we have a reliable clock, we just keep our current time. */
1121     } else {
1122         if (srv->boot <= self->boot) {
1123             /* The other server is older than us.  Accept their timestamp.
1124              * Alternately, we are same age, but we accept their time
1125              * since we are linking to them. */
1126             self->boot = srv->boot;
1127             ioset_set_time(srv->link);
1128         }
1129     }
1130     if (srv == self->uplink) {
1131         extern time_t burst_begin;
1132         burst_begin = now;
1133     }
1134     return 1;
1135 }
1136
1137
1138 static CMD_FUNC(cmd_eob)
1139 {
1140     struct server *sender;
1141     dict_iterator_t it;
1142     unsigned int ii;
1143
1144     if (!(sender = GetServerH(origin)))
1145         return 0;
1146     if (sender == self->uplink) {
1147         cManager.uplink->state = CONNECTED;
1148         for (it = dict_first(unbursted_channels); it; it = iter_next(it))
1149             irc_burst(iter_data(it));
1150         dict_delete(unbursted_channels);
1151         unbursted_channels = NULL;
1152         irc_eob();
1153         irc_eob_ack();
1154
1155         /* now that we know who our uplink is,
1156          * we can center the routing map and activate auto-routing.
1157          */
1158         activate_routing(NULL, NULL, NULL);
1159     }
1160     sender->self_burst = 0;
1161     recalc_bursts(sender);
1162     for (ii=0; ii<slf_used; ii++)
1163         slf_list[ii](sender);
1164     /* let auto-routing figure out if we were
1165      * wating on this server to link a child to it */
1166     /* DONT call this if uplink is _US_ */
1167     if(sender->uplink != self)
1168         routing_handle_connect(sender->name, sender->uplink->name);
1169     return 1;
1170 }
1171
1172 static CMD_FUNC(cmd_eob_ack)
1173 {
1174     extern time_t burst_begin;
1175
1176     if (GetServerH(origin) == self->uplink) {
1177         burst_length = now - burst_begin;
1178         self->self_burst = self->burst = 0;
1179     }
1180     cManager.uplink->state = CONNECTED;
1181     return 1;
1182 }
1183
1184 static CMD_FUNC(cmd_ping)
1185 {
1186     struct server *srv;
1187     struct userNode *un;
1188
1189     if (argc > 3)
1190         irc_pong_asll(argv[2], argv[3]);
1191     else if ((srv = GetServerH(origin)))
1192         irc_pong(self->name, srv->numeric);
1193     else if ((un = GetUserH(origin)))
1194         irc_pong(self->name, un->numeric);
1195     else
1196         irc_pong(self->name, origin);
1197
1198     timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1199     timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1200     timeq_add(now + ping_freq, timed_send_ping, 0);
1201     received_ping();
1202     return 1;
1203 }
1204
1205 static CMD_FUNC(cmd_error_nick)
1206 {
1207     /* Go back to original IRC length .. and try to reconnect :/ */
1208     change_nicklen(9);
1209     irc_squit(self, "Got erroneous nickname, truncating nicks.", NULL);
1210     return 1;
1211 }
1212
1213 struct create_desc {
1214     struct userNode *user;
1215     time_t when;
1216 };
1217
1218 static void
1219 join_helper(struct chanNode *chan, void *data)
1220 {
1221     struct create_desc *cd = data;
1222     AddChannelUser(cd->user, chan);
1223 }
1224
1225 static void
1226 create_helper(char *name, void *data)
1227 {
1228     struct create_desc *cd = data;
1229
1230     if (!strcmp(name, "0")) {
1231         while (cd->user->channels.used > 0)
1232             DelChannelUser(cd->user, cd->user->channels.list[0]->channel, 0, 0);
1233         return;
1234     }
1235
1236     AddChannelUser(cd->user, AddChannel(name, cd->when, NULL, NULL, NULL));
1237 }
1238
1239 static CMD_FUNC(cmd_create)
1240 {
1241     struct create_desc cd;
1242     struct userNode *user;
1243
1244     if ((argc < 3) || !(user = GetUserH(origin)))
1245         return 0;
1246     cd.user = user;
1247     cd.when = atoi(argv[2]);
1248     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
1249     return 1;
1250 }
1251
1252 static CMD_FUNC(cmd_join)
1253 {
1254     struct create_desc cd;
1255
1256     if (!(cd.user = GetUserH(origin)))
1257         return 0;
1258     if (argc < 2)
1259         return 0;
1260     else if (argc < 3)
1261         cd.when = now;
1262     else
1263         cd.when = atoi(argv[2]);
1264     parse_foreach(argv[1], join_helper, create_helper, NULL, NULL, &cd);
1265     return 1;
1266 }
1267
1268 static CMD_FUNC(cmd_pong)
1269 {
1270     if (argc < 3)
1271         return 0;
1272     if (!strcmp(argv[2], self->name)) {
1273         timeq_del(0, timed_send_ping, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1274         timeq_del(0, timed_ping_timeout, 0, TIMEQ_IGNORE_WHEN|TIMEQ_IGNORE_DATA);
1275         timeq_add(now + ping_freq, timed_send_ping, 0);
1276         received_ping();
1277     }
1278     return 1;
1279 }
1280
1281 static CMD_FUNC(cmd_nick)
1282 {
1283     struct userNode *user;
1284     if ((user = GetUserH(origin))) {
1285         /* nick change (since the source is a user numeric) */
1286         if (argc < 2)
1287             return 0;
1288         NickChange(user, argv[1], 1);
1289     } else {
1290         struct server *serv;
1291         char modes[MAXLEN];
1292         /* new nick */
1293         if (argc < 9)
1294             return 0;
1295         serv = GetServerH(origin);
1296         if (argc > 9)
1297             unsplit_string(argv+6, argc-9, modes);
1298         else
1299             strcpy(modes, "+");
1300         AddUser(serv, argv[1], argv[4], argv[5], modes, argv[argc-2], argv[argc-1], atoi(argv[3]), argv[argc-3]);
1301     }
1302     return 1;
1303 }
1304
1305 static CMD_FUNC(cmd_account)
1306 {
1307     struct userNode *user;
1308     struct server *server;
1309     struct handle_info *hi;
1310
1311     if ((argc < 3) || !origin || !(server = GetServerH(origin)))
1312         return 0; /* Origin must be server. */
1313
1314     /* This next line appears to tremple origin.. why? */
1315     user = GetUserN(argv[1]);
1316     if (!user)
1317         return 1; /* A QUIT probably passed the ACCOUNT. */
1318
1319     if(!extended_accounts) /* any need for this function without? */
1320         return 1;
1321
1322     if(!strcmp(argv[2],"C"))
1323     {
1324         if((hi = loc_auth(argv[4], argv[5])))
1325         {
1326             /* Return a AC A */
1327             putsock("%s " P10_ACCOUNT " %s A %s %lu", self->numeric, server->numeric , argv[3], hi->registered);
1328
1329         }
1330         else
1331         {
1332             /* Return a AC D */
1333             putsock("%s " P10_ACCOUNT " %s D %s", self->numeric, server->numeric , argv[3]);
1334         }
1335         return 1;
1336     }
1337     else if(!strcmp(argv[2],"R"))
1338        call_account_func(user, argv[3]);
1339     else
1340         call_account_func(user, argv[2]); /* For backward compatability */
1341     return 1;
1342 }
1343
1344 static CMD_FUNC(cmd_fakehost)
1345 {
1346     struct userNode *user;
1347
1348     if ((argc < 3) || !origin || !GetServerH(origin))
1349         return 0;
1350     if (!(user = GetUserN(argv[1])))
1351         return 1;
1352     assign_fakehost(user, argv[2], 0);
1353     return 1;
1354 }
1355
1356 static CMD_FUNC(cmd_burst)
1357 {
1358     extern int rel_age;
1359     char modes[MAXLEN], *members = "";
1360     static char exemptlist[MAXLEN], banlist[MAXLEN];
1361     unsigned int next = 3, res = 1;
1362     int ctype = 0, echeck = 0, bcheck = 0;
1363     struct chanNode *cNode;
1364     struct userNode *un;
1365     struct modeNode *mNode;
1366     long mode;
1367     int oplevel = -1;
1368     char *user, *end, sep;
1369     time_t in_timestamp;
1370     char* parm = NULL;
1371
1372     if (argc < 3)
1373         return 0;
1374     modes[0] = 0;
1375
1376     exemptlist[0] = 0;
1377     banlist[0] = 0;
1378
1379     while (next < argc) {
1380         switch (argv[next][0]) {
1381         case '+': {
1382             const char *pos;
1383             int n_modes;
1384             for (pos=argv[next], n_modes = 1; *pos; pos++)
1385                 if ((*pos == 'k') || (*pos == 'l') || (*pos == 'A')
1386                     || (*pos == 'U'))
1387                     n_modes++;
1388             unsplit_string(argv+next, n_modes, modes);
1389             next += n_modes;
1390             break;
1391         }
1392         case '%': {
1393             for(parm = mysep(&argv[next], " "); /* parm = first param */
1394                   parm;   /* While param is not null */
1395                   parm = mysep(&argv[next], " ")  /* parm = next param */
1396                )
1397             {
1398               switch (parm[0]) {
1399                 case '%': {
1400                   ctype = 1;
1401                   break;
1402                 }
1403                 case '~': {
1404                   ctype = 2;
1405                   break;
1406                 }
1407                 default: {
1408                   break;
1409                 }
1410               }
1411               if (ctype == 1) {
1412                 if (bcheck == 0) {
1413                   /* strip % char off start of very first ban */
1414                   if (strlen(parm) > 1) {
1415                     strncat(banlist, strtok(parm, "%"), sizeof(banlist) - 1 - strlen(banlist));
1416                     strncat(banlist, " ", sizeof(banlist) - 1 - strlen(banlist));
1417                   }
1418                   bcheck = 1;
1419                 } else {
1420                   strncat(banlist, parm, sizeof(banlist) - 1 - strlen(banlist));
1421                   strncat(banlist, " ", sizeof(banlist) - 1 - strlen(banlist));
1422                 }
1423               } else if (ctype == 2) {
1424                 if (echeck == 0) {
1425                    echeck = 1;
1426                 } else {
1427                   strncat(exemptlist, parm, sizeof(exemptlist) - 1 - strlen(exemptlist));
1428                   strncat(exemptlist, " ", sizeof(exemptlist) - 1 - strlen(exemptlist));
1429                 }
1430               }
1431             }
1432             next++;
1433             break;
1434         }
1435         default: members = argv[next++]; break;
1436       }
1437     }
1438
1439     in_timestamp = atoi(argv[2]);
1440     if ((cNode = dict_find(unbursted_channels, argv[1], NULL))) {
1441         cNode->timestamp = in_timestamp;
1442         dict_remove(unbursted_channels, cNode->name);
1443         irc_burst(cNode);
1444     }
1445     cNode = AddChannel(argv[1], in_timestamp, modes, banlist, exemptlist);
1446
1447     /* Burst channel members in now. */
1448     for (user = members, sep = *members, mode = 0; sep; user = end) {
1449         for (end = user + 3; isalnum(*end) || *end == '[' || *end == ']'; end++) ;
1450         sep = *end++; end[-1] = 0;
1451         if (sep == ':') {
1452             mode = 0;
1453             while ((sep = *end++)) {
1454                 if (sep == 'o') {
1455                     mode |= MODE_CHANOP;
1456                     oplevel = -1;
1457                 } else if (sep == 'h') {
1458                     mode |= MODE_HALFOP;
1459                     oplevel = -1;
1460                 } else if (sep == 'v') {
1461                     mode |= MODE_VOICE;
1462                     oplevel = -1;
1463                 } else if (isdigit(sep)) {
1464                     mode |= MODE_CHANOP;
1465                     if (oplevel >= 0)
1466                         oplevel += parse_oplevel(end);
1467                     else
1468                         oplevel = parse_oplevel(end);
1469                     while (isdigit(*end)) end++;
1470                 } else
1471                     break;
1472             }
1473             if (rel_age < 0)
1474                 mode = 0;
1475         }
1476         if (!(un = GetUserN(user))) {
1477             res = 0;
1478             continue;
1479         }
1480         if ((mNode = AddChannelUser(un, cNode))) {
1481             mNode->modes = mode;
1482             mNode->oplevel = oplevel;
1483         }
1484     }
1485
1486     return res;
1487 }
1488
1489 static CMD_FUNC(cmd_mode)
1490 {
1491     struct chanNode *cn;
1492     struct userNode *un;
1493     char *sethost; // sethost - reed/apples
1494     int i; // sethost - reed/apples
1495
1496     if (argc < 3)
1497         return 0;
1498     if (!IsChannelName(argv[1])) {
1499         un = GetUserH(argv[1]);
1500         if (!un) {
1501             log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s whose mode is changing.", argv[1]);
1502             return 0;
1503         }
1504         // sethost - reed/apples
1505         if (argc == 3)
1506         mod_usermode(un, argv[2]);
1507         else {
1508           sethost = malloc(strlen(argv[2]) + 1 + strlen(argv[3]) + 1);
1509           i = 0;
1510           while((sethost[i++] = *argv[2]++));
1511           i--;
1512          sethost[i++] = ' ';
1513           while((sethost[i++] = *argv[3]++));
1514           mod_usermode(un, sethost); // sethost - reed/apples
1515         }
1516
1517         return 1;
1518     }
1519
1520     if (!(cn = GetChannel(argv[1]))) {
1521         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1522         return 0;
1523     }
1524     if ((un = GetUserH(origin))) {
1525         struct modeNode *mn;
1526         /* Update idle time for person setting the mode */
1527         if ((mn = GetUserMode(cn, un)))
1528             mn->idle_since = now;
1529     } else {
1530         /* If it came from a server, reset timestamp to re-sync. */
1531         cn->timestamp = atoi(argv[argc-1]);
1532     }
1533
1534     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER|(un ? MC_NOTIFY : 0));
1535 }
1536
1537 static CMD_FUNC(cmd_opmode)
1538 {
1539     struct chanNode *cn;
1540     struct userNode *un;
1541
1542     if (argc < 3)
1543         return 0;
1544
1545     if (!(cn = GetChannel(argv[1]))) {
1546         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1547         return 0;
1548     }
1549     if (!(un = GetUserH(origin))) {
1550         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting OPMODE.", origin);
1551         return 0;
1552     }
1553     if (!IsOper(un)) {
1554         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using OPMODE.", un->nick);
1555         return 0;
1556     }
1557
1558     return mod_chanmode(un, cn, argv+2, argc-2, MCP_ALLOW_OVB|MCP_FROM_SERVER); /* do NOT announce opmode locally */
1559 }
1560
1561 static int clear_chanmode(struct chanNode *channel, const char *modes);
1562
1563 static CMD_FUNC(cmd_clearmode)
1564 {
1565     struct chanNode *cn;
1566     struct userNode *un;
1567
1568     if (argc < 3)
1569         return 0;
1570
1571     if (!(cn = GetChannel(argv[1]))) {
1572         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose mode is changing.", argv[1]);
1573         return 0;
1574     }
1575     if (!(un = GetUserH(origin))) {
1576         log_module(MAIN_LOG, LOG_ERROR, "Unable to find user %s requesting CLEARMODE.", origin);
1577         return 0;
1578     }
1579     if (!IsOper(un)) {
1580         log_module(MAIN_LOG, LOG_ERROR, "Non-privileged user %s using CLEARMODE.", un->nick);
1581         return 0;
1582     }
1583
1584     return clear_chanmode(cn, argv[2]);
1585 }
1586
1587 static CMD_FUNC(cmd_topic)
1588 {
1589     struct chanNode *cn;
1590     time_t chan_ts, topic_ts;
1591     struct userNode *user;
1592
1593     if (argc < 3)
1594         return 0;
1595     if (!(cn = GetChannel(argv[1]))) {
1596         log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s whose topic is being set", argv[1]);
1597         return 0;
1598     }
1599
1600
1601     if (argc == 5) {              /* Asuka / Topic Bursting IRCu's */
1602         user = GetUserH(origin);
1603         chan_ts = atoi(argv[2]);
1604         topic_ts = atoi(argv[3]);
1605     } else if (argc >= 6) {       /* Nefarious 0.5.0 */
1606         user = GetUserH(strtok(argv[2], "!"));
1607         chan_ts = atoi(argv[3]);
1608         topic_ts = atoi(argv[4]);
1609     } else {                      /* Regular IRCu (No Topic Bursting)*/
1610         user = GetUserH(origin);
1611         chan_ts = cn->timestamp;
1612         topic_ts = now;
1613     }
1614
1615     SetChannelTopic(cn, user, user, argv[argc-1], 0);
1616     cn->topic_time = topic_ts;
1617     return 1;
1618 }
1619
1620 static CMD_FUNC(cmd_num_topic)
1621 {
1622     struct chanNode *cn;
1623
1624     if (!argv[0])
1625         return 0; /* huh? */
1626     if (argv[2]) {
1627         cn = GetChannel(argv[2]);
1628         if (!cn) {
1629             log_module(MAIN_LOG, LOG_ERROR, "Unable to find channel %s in topic reply", argv[2]);
1630             return 0;
1631         }
1632     } else
1633         return 0;
1634
1635     switch (atoi(argv[0])) {
1636     case 331:
1637         cn->topic_time = 0;
1638         break;  /* no topic */
1639     case 332:
1640         if (argc < 4)
1641             return 0;
1642         safestrncpy(cn->topic, unsplit_string(argv+3, argc-3, NULL), sizeof(cn->topic));
1643         break;
1644     case 333:
1645         if (argc < 5)
1646             return 0;
1647         safestrncpy(cn->topic_nick, argv[3], sizeof(cn->topic_nick));
1648         cn->topic_time = atoi(argv[4]);
1649         break;
1650     default:
1651         return 0; /* should never happen */
1652     }
1653     return 1;
1654 }
1655
1656 static CMD_FUNC(cmd_num_gline)
1657 {
1658     if (argc < 6)
1659         return 0;
1660     gline_add(origin, argv[3], atoi(argv[4])-now, argv[5], now, 0, 0);
1661     return 1;
1662 }
1663
1664 static CMD_FUNC(cmd_num_shun)
1665 {
1666     if (argc < 6)
1667         return 0;
1668     shun_add(origin, argv[3], atoi(argv[4])-now, argv[5], now, 0);
1669     return 1;
1670 }
1671
1672 static CMD_FUNC(cmd_quit)
1673 {
1674     struct userNode *user;
1675     if (argc < 2)
1676         return 0;
1677     /* Sometimes we get a KILL then a QUIT or the like, so we don't want to
1678      * call DelUser unless we have the user in our grasp. */
1679     if ((user = GetUserH(origin)))
1680         DelUser(user, NULL, false, argv[1]);
1681     return 1;
1682 }
1683
1684 static CMD_FUNC(cmd_kill)
1685 {
1686     struct userNode *user;
1687     if (argc < 2)
1688         return 0;
1689     user = GetUserN(argv[1]);
1690     if (!user) {
1691         /* If we get a KILL for a non-existent user, it could be a
1692          * Ghost response to a KILL we sent out earlier.  So we only
1693          * whine if the target is local.
1694          */
1695         if (!strncmp(argv[1], self->numeric, strlen(self->numeric)))
1696             log_module(MAIN_LOG, LOG_ERROR, "Unable to find kill victim %s", argv[1]);
1697         return 0;
1698     }
1699
1700     if (IsLocal(user) && IsService(user)) {
1701         /* TODO: rate limit this so silly things don't happen. */
1702         ReintroduceUser(user);
1703         return 1;
1704     }
1705
1706     DelUser(user, NULL, false, argv[2]);
1707     return 1;
1708 }
1709
1710 static CMD_FUNC(cmd_part)
1711 {
1712     struct userNode *user;
1713
1714     if (argc < 2)
1715         return 0;
1716     user = GetUserH(origin);
1717     if (!user)
1718         return 0;
1719     parse_foreach(argv[1], part_helper, NULL, NULL, NULL, user);
1720     return 1;
1721 }
1722
1723 static CMD_FUNC(cmd_silence)
1724 {
1725     struct userNode *user;
1726     char *mask;
1727     char *new_mask;
1728     unsigned int i;
1729
1730     if (argc < 2)
1731         return 0;
1732
1733     user = GetUserN(argv[1]);
1734
1735     /* Sanity, go nuts if this happens */
1736     if (!user)
1737         return 0;
1738
1739     /*  We can safely ignore this if a user adding a silence is not
1740      *  ignored. However this brings up a TODO. If a user logs in and
1741      *  they have silences on the IRCd then we need to set them here
1742      *  somehow
1743      */
1744     if (!user->handle_info)
1745         return 1;
1746
1747     mask = argv[2];
1748
1749     if (*mask == '-') {
1750         for (i=0; i<user->handle_info->ignores->used; i++) {
1751             if (!irccasecmp(mask+1, user->handle_info->ignores->list[i]))
1752                 user->handle_info->ignores->list[i] = user->handle_info->ignores->list[--user->handle_info->ignores->used];
1753         }
1754     } else {
1755         for (i=0; i<user->handle_info->ignores->used; i++) {
1756             if (!strcmp(mask+1, user->handle_info->ignores->list[i]))
1757                 return 1; /* Already on the users NickServ ignore list, safely ignore */
1758         }
1759
1760         new_mask = strdup(mask+1);
1761         string_list_append(user->handle_info->ignores, new_mask);
1762     }
1763     return 1;
1764 }
1765
1766 static CMD_FUNC(cmd_kick)
1767 {
1768     if (argc < 3)
1769         return 0;
1770     ChannelUserKicked(GetUserH(origin), GetUserN(argv[2]), GetChannel(argv[1]));
1771     return 1;
1772 }
1773
1774 static CMD_FUNC(cmd_squit)
1775 {
1776     struct server *server;
1777     char *uplink;
1778
1779     if (argc < 4)
1780         return 0;
1781     if (!(server = GetServerH(argv[1])))
1782         return 0;
1783
1784     if (server == self->uplink) {
1785         /* Force a reconnect to the currently selected server. */
1786         cManager.uplink->tries = 0;
1787         log_module(MAIN_LOG, LOG_INFO, "Squitting from uplink: %s", argv[3]);
1788         close_socket();
1789         return 1;
1790     }
1791
1792     uplink = strdup(server->uplink->name);
1793     DelServer(server, 0, argv[3]);
1794     /* if its a pingout and pingout connecting is enabled
1795                or its a read error and readerror connecting is enabled
1796                or were doing a "N" and i need to connect that server somewhere */
1797     routing_handle_squit(argv[1], uplink, argv[3]);
1798     free(uplink);
1799     return 1;
1800 }
1801
1802 static CMD_FUNC(cmd_privmsg)
1803 {
1804     struct privmsg_desc pd;
1805     if (argc != 3)
1806         return 0;
1807     pd.user = GetUserH(origin);
1808     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user)))
1809         return 1;
1810     pd.is_notice = 0;
1811     pd.text = argv[2];
1812     parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1813     return 1;
1814 }
1815
1816 static CMD_FUNC(cmd_notice)
1817 {
1818     struct privmsg_desc pd;
1819     struct server *srv;
1820     int nuser = 0;
1821
1822     if (argc != 3)
1823         return 0;
1824
1825     pd.user = GetUserH(origin);
1826     if(!pd.user)
1827         nuser = 1;
1828     if (!pd.user || (IsGagged(pd.user) && !IsOper(pd.user))) {
1829     }
1830     else {
1831         pd.is_notice = 1;
1832         pd.text = argv[2];
1833         parse_foreach(argv[1], privmsg_chan_helper, NULL, privmsg_user_helper, privmsg_invalid, &pd);
1834     }
1835
1836     srv = GetServerH(origin);
1837     if(srv) {
1838         char *sargv[MAXNUMPARAMS];
1839         int sargc;
1840
1841         sargc = split_line(argv[2], true, MAXNUMPARAMS, sargv);
1842
1843         if(!strcasecmp(sargv[0], "Connect:")) {
1844             /* :Connect: Host shoe.loxxin.net not listed in ircd.conf */
1845             if(!strcasecmp(sargv[3], "not") && !strcasecmp(sargv[4], "listed")) {
1846                 routing_handle_connect_failure(srv, sargv[2], unsplit_string(sargv+3, sargc-3, NULL));
1847             }
1848         }
1849         else if(!strcasecmp(sargv[0], "Link")) {
1850             /* :Link with mephisto.etheria.cx cancelled: Server mephisto.etheria.cx[216.46.33.71]
1851              *
1852              * :Link with laptop.afternet.org cancelled: Connection refused
1853              */
1854             if(!strcasecmp(sargv[3], "cancelled:")) {
1855                 routing_handle_connect_failure(srv, sargv[2], unsplit_string(sargv+4, sargc-4, NULL));
1856             }
1857         }
1858     }
1859     return 1;
1860 }
1861
1862 static CMD_FUNC(cmd_away)
1863 {
1864     struct userNode *uNode;
1865
1866     uNode = GetUserH(origin);
1867     if (!uNode)
1868         return 1;
1869     if (argc < 2)
1870         uNode->modes &= ~FLAGS_AWAY;
1871     else
1872         uNode->modes |= FLAGS_AWAY;
1873     return 1;
1874 }
1875
1876 static CMD_FUNC(cmd_gline)
1877 {
1878     if (argc < 3)
1879         return 0;
1880     if (argv[2][0] == '+') {
1881         if (argc < 5)
1882             return 0;
1883         gline_add(origin, argv[2]+1, strtoul(argv[3], NULL, 0), argv[argc-1], now, 0, 0);
1884         return 1;
1885     } else if (argv[2][0] == '-') {
1886         gline_remove(argv[2]+1, 0);
1887         return 1;
1888     } else
1889         return 0;
1890 }
1891
1892 static CMD_FUNC(cmd_shun)
1893 {
1894     if (argc < 3)
1895         return 0;
1896     if (argv[2][0] == '+') {
1897         if (argc < 5)
1898             return 0;
1899         shun_add(origin, argv[2]+1, strtoul(argv[3], NULL, 0), argv[argc-1], now, 0);
1900         return 1;
1901     } else if (argv[2][0] == '-') {
1902         shun_remove(argv[2]+1, 0);
1903         return 1;
1904     } else
1905         return 0;
1906 }
1907
1908 static CMD_FUNC(cmd_svsnick)
1909 {
1910     struct userNode *target, *dest;
1911     if ((argc < 4)
1912         || !(target = GetUserN(argv[1]))
1913         || !IsLocal(target)
1914         || (dest = GetUserH(argv[2])))
1915         return 0;
1916     NickChange(target, argv[2], 0);
1917     return 1;
1918 }
1919
1920 static oper_func_t *of_list;
1921 static unsigned int of_size = 0, of_used = 0;
1922
1923 void
1924 free_user(struct userNode *user)
1925 {
1926     free(user->nick);
1927     free(user);
1928 }
1929
1930 static void
1931 parse_cleanup(void)
1932 {
1933     unsigned int nn;
1934     free(of_list);
1935     free(privmsg_funcs);
1936     free(notice_funcs);
1937     free(mcf_list);
1938     dict_delete(irc_func_dict);
1939     for (nn=0; nn<dead_users.used; nn++)
1940         free_user(dead_users.list[nn]);
1941     userList_clean(&dead_users);
1942 }
1943
1944 static void
1945 p10_conf_reload(void) {
1946     hidden_host_suffix = conf_get_data("server/hidden_host", RECDB_QSTRING);
1947 }
1948
1949 static void
1950 remove_unbursted_channel(struct chanNode *cNode) {
1951     if (unbursted_channels)
1952         dict_remove(unbursted_channels, cNode->name);
1953 }
1954
1955 void
1956 init_parse(void)
1957 {
1958     const char *str, *desc;
1959     int numnick, usermask, max_users;
1960     char numer[COMBO_NUMERIC_LEN+1];
1961
1962     /* read config items */
1963     str = conf_get_data("server/extended_accounts", RECDB_QSTRING);
1964     extended_accounts = str ? enabled_string(str) : 1;
1965     str = conf_get_data("server/ping_freq", RECDB_QSTRING);
1966     ping_freq = str ? ParseInterval(str) : 120;
1967     str = conf_get_data("server/ping_timeout", RECDB_QSTRING);
1968     ping_timeout = str ? ParseInterval(str) : 30;
1969     str = conf_get_data("server/force_n2k", RECDB_QSTRING);
1970     force_n2k = str ? enabled_string(str) : 1;
1971     str = conf_get_data("server/numeric", RECDB_QSTRING);
1972     if (!str) {
1973         log_module(MAIN_LOG, LOG_ERROR, "No server/numeric entry in config file.");
1974         exit(1);
1975     }
1976     numnick = atoi(str);
1977     str = conf_get_data("server/max_users", RECDB_QSTRING);
1978     max_users = str ? atoi(str) : 4096;
1979     for (usermask = 4; usermask < max_users; usermask <<= 1) ;
1980     usermask--;
1981     if ((numnick < 64) && (usermask < 4096) && !force_n2k)
1982         inttobase64(numer, (numnick << 12) + (usermask & 0x00fff), 3);
1983     else
1984         inttobase64(numer, (numnick << 18) + (usermask & 0x3ffff), 5);
1985
1986     str = conf_get_data("server/his_servername", RECDB_QSTRING);
1987     his_servername = str ? strdup(str) : NULL;
1988     str = conf_get_data("server/his_servercomment", RECDB_QSTRING);
1989     his_servercomment = str ? strdup(str) : NULL;
1990
1991     str = conf_get_data("server/hostname", RECDB_QSTRING);
1992     desc = conf_get_data("server/description", RECDB_QSTRING);
1993     if (!str || !desc) {
1994         log_module(MAIN_LOG, LOG_ERROR, "No server/hostname entry in config file.");
1995         exit(1);
1996     }
1997     self = AddServer(NULL, str, 0, boot_time, now, numer, desc);
1998     conf_register_reload(p10_conf_reload);
1999
2000     irc_func_dict = dict_new();
2001     dict_insert(irc_func_dict, CMD_BURST, cmd_burst);
2002     dict_insert(irc_func_dict, TOK_BURST, cmd_burst);
2003     dict_insert(irc_func_dict, CMD_CREATE, cmd_create);
2004     dict_insert(irc_func_dict, TOK_CREATE, cmd_create);
2005     dict_insert(irc_func_dict, CMD_EOB, cmd_eob);
2006     dict_insert(irc_func_dict, TOK_EOB, cmd_eob);
2007     dict_insert(irc_func_dict, CMD_EOB_ACK, cmd_eob_ack);
2008     dict_insert(irc_func_dict, TOK_EOB_ACK, cmd_eob_ack);
2009     dict_insert(irc_func_dict, CMD_MODE, cmd_mode);
2010     dict_insert(irc_func_dict, TOK_MODE, cmd_mode);
2011     dict_insert(irc_func_dict, CMD_NICK, cmd_nick);
2012     dict_insert(irc_func_dict, TOK_NICK, cmd_nick);
2013     dict_insert(irc_func_dict, CMD_ACCOUNT, cmd_account);
2014     dict_insert(irc_func_dict, TOK_ACCOUNT, cmd_account);
2015     dict_insert(irc_func_dict, CMD_FAKEHOST, cmd_fakehost);
2016     dict_insert(irc_func_dict, TOK_FAKEHOST, cmd_fakehost);
2017     dict_insert(irc_func_dict, CMD_PASS, cmd_pass);
2018     dict_insert(irc_func_dict, TOK_PASS, cmd_pass);
2019     dict_insert(irc_func_dict, CMD_PING, cmd_ping);
2020     dict_insert(irc_func_dict, TOK_PING, cmd_ping);
2021     dict_insert(irc_func_dict, CMD_PRIVMSG, cmd_privmsg);
2022     dict_insert(irc_func_dict, TOK_PRIVMSG, cmd_privmsg);
2023     dict_insert(irc_func_dict, CMD_PONG, cmd_pong);
2024     dict_insert(irc_func_dict, TOK_PONG, cmd_pong);
2025     dict_insert(irc_func_dict, CMD_QUIT, cmd_quit);
2026     dict_insert(irc_func_dict, TOK_QUIT, cmd_quit);
2027     dict_insert(irc_func_dict, CMD_SERVER, cmd_server);
2028     dict_insert(irc_func_dict, TOK_SERVER, cmd_server);
2029     dict_insert(irc_func_dict, CMD_JOIN, cmd_join);
2030     dict_insert(irc_func_dict, TOK_JOIN, cmd_join);
2031     dict_insert(irc_func_dict, CMD_PART, cmd_part);
2032     dict_insert(irc_func_dict, TOK_PART, cmd_part);
2033     dict_insert(irc_func_dict, CMD_ERROR, cmd_error);
2034     dict_insert(irc_func_dict, TOK_ERROR, cmd_error);
2035     dict_insert(irc_func_dict, CMD_TOPIC, cmd_topic);
2036     dict_insert(irc_func_dict, TOK_TOPIC, cmd_topic);
2037     dict_insert(irc_func_dict, CMD_AWAY, cmd_away);
2038     dict_insert(irc_func_dict, TOK_AWAY, cmd_away);
2039     dict_insert(irc_func_dict, CMD_SILENCE, cmd_silence);
2040     dict_insert(irc_func_dict, TOK_SILENCE, cmd_silence);
2041     dict_insert(irc_func_dict, CMD_KICK, cmd_kick);
2042     dict_insert(irc_func_dict, TOK_KICK, cmd_kick);
2043     dict_insert(irc_func_dict, CMD_SQUIT, cmd_squit);
2044     dict_insert(irc_func_dict, TOK_SQUIT, cmd_squit);
2045     dict_insert(irc_func_dict, CMD_KILL, cmd_kill);
2046     dict_insert(irc_func_dict, TOK_KILL, cmd_kill);
2047     dict_insert(irc_func_dict, CMD_NOTICE, cmd_notice);
2048     dict_insert(irc_func_dict, TOK_NOTICE, cmd_notice);
2049     dict_insert(irc_func_dict, CMD_STATS, cmd_stats);
2050     dict_insert(irc_func_dict, TOK_STATS, cmd_stats);
2051     dict_insert(irc_func_dict, CMD_SVSNICK, cmd_svsnick);
2052     dict_insert(irc_func_dict, TOK_SVSNICK, cmd_svsnick);
2053     dict_insert(irc_func_dict, CMD_SWHOIS, cmd_dummy);
2054     dict_insert(irc_func_dict, TOK_SWHOIS, cmd_dummy);
2055     dict_insert(irc_func_dict, CMD_WHOIS, cmd_whois);
2056     dict_insert(irc_func_dict, TOK_WHOIS, cmd_whois);
2057     dict_insert(irc_func_dict, CMD_GLINE, cmd_gline);
2058     dict_insert(irc_func_dict, TOK_GLINE, cmd_gline);
2059     dict_insert(irc_func_dict, CMD_SHUN, cmd_shun);
2060     dict_insert(irc_func_dict, TOK_SHUN, cmd_shun);
2061     dict_insert(irc_func_dict, CMD_OPMODE, cmd_opmode);
2062     dict_insert(irc_func_dict, TOK_OPMODE, cmd_opmode);
2063     dict_insert(irc_func_dict, CMD_CLEARMODE, cmd_clearmode);
2064     dict_insert(irc_func_dict, TOK_CLEARMODE, cmd_clearmode);
2065     dict_insert(irc_func_dict, CMD_VERSION, cmd_version);
2066     dict_insert(irc_func_dict, TOK_VERSION, cmd_version);
2067     dict_insert(irc_func_dict, CMD_ADMIN, cmd_admin);
2068     dict_insert(irc_func_dict, TOK_ADMIN, cmd_admin);
2069
2070     /* In P10, DESTRUCT doesn't do anything except be broadcast to servers.
2071      * Apparently to obliterate channels from any servers that think they
2072      * exist?
2073      */
2074     dict_insert(irc_func_dict, CMD_DESTRUCT, cmd_dummy);
2075     dict_insert(irc_func_dict, TOK_DESTRUCT, cmd_dummy);
2076     /* Ignore invites */
2077     dict_insert(irc_func_dict, CMD_INVITE, cmd_dummy);
2078     dict_insert(irc_func_dict, TOK_INVITE, cmd_dummy);
2079     /* DESYNCH is just informational, so ignore it */
2080     dict_insert(irc_func_dict, CMD_DESYNCH, cmd_dummy);
2081     dict_insert(irc_func_dict, TOK_DESYNCH, cmd_dummy);
2082     /* Ignore channel operator notices. */
2083     dict_insert(irc_func_dict, CMD_WALLCHOPS, cmd_dummy);
2084     dict_insert(irc_func_dict, TOK_WALLCHOPS, cmd_dummy);
2085     dict_insert(irc_func_dict, CMD_WALLVOICES, cmd_dummy);
2086     dict_insert(irc_func_dict, TOK_WALLVOICES, cmd_dummy);
2087     dict_insert(irc_func_dict, CMD_WALLHOPS, cmd_dummy);
2088     dict_insert(irc_func_dict, TOK_WALLHOPS, cmd_dummy);
2089     /* Ignore opers being silly. */
2090     dict_insert(irc_func_dict, CMD_WALLOPS, cmd_dummy);
2091     dict_insert(irc_func_dict, TOK_WALLOPS, cmd_dummy);
2092     dict_insert(irc_func_dict, CMD_WALLHOPS, cmd_dummy);
2093     dict_insert(irc_func_dict, TOK_WALLHOPS, cmd_dummy);
2094     dict_insert(irc_func_dict, TOK_WALLUSERS, cmd_dummy);
2095     /* Ignore dnsbl exemptions */
2096     dict_insert(irc_func_dict, TOK_EXEMPT, cmd_dummy);
2097     dict_insert(irc_func_dict, TOK_MARK, cmd_dummy);
2098     /* Ignore privs */
2099     dict_insert(irc_func_dict, TOK_PRIVS, cmd_dummy);
2100     /* Ignore remote luser */
2101     dict_insert(irc_func_dict, TOK_LUSERS, cmd_dummy);
2102     /* We have reliable clock!  Always!  Wraaa! */
2103     dict_insert(irc_func_dict, CMD_SETTIME, cmd_dummy);
2104     dict_insert(irc_func_dict, TOK_SETTIME, cmd_dummy);
2105
2106     /* ignore /trace and /motd commands targetted at us */
2107     dict_insert(irc_func_dict, TOK_TRACE, cmd_dummy);
2108     dict_insert(irc_func_dict, TOK_MOTD, cmd_dummy);
2109
2110     /* handle topics */
2111     dict_insert(irc_func_dict, "331", cmd_num_topic);
2112     dict_insert(irc_func_dict, "332", cmd_num_topic);
2113     dict_insert(irc_func_dict, "333", cmd_num_topic);
2114     dict_insert(irc_func_dict, "345", cmd_dummy); /* blah has been invited to blah */
2115     dict_insert(irc_func_dict, "432", cmd_error_nick); /* Erroneus [sic] nickname */
2116     /* ban list resetting */
2117     /* "stats g" responses */
2118     dict_insert(irc_func_dict, "247", cmd_num_gline);
2119     dict_insert(irc_func_dict, "542", cmd_num_shun);
2120     dict_insert(irc_func_dict, "219", cmd_dummy); /* "End of /STATS report" */
2121     /* other numeric responses we might get */
2122     dict_insert(irc_func_dict, "401", cmd_dummy); /* target left network */
2123     dict_insert(irc_func_dict, "403", cmd_dummy); /* no such channel */
2124     dict_insert(irc_func_dict, "404", cmd_dummy); /* cannot send to channel */
2125     dict_insert(irc_func_dict, "439", cmd_dummy); /* target change too fast */
2126     dict_insert(irc_func_dict, "441", cmd_dummy); /* target isn't on that channel */
2127     dict_insert(irc_func_dict, "442", cmd_dummy); /* you aren't on that channel */
2128     dict_insert(irc_func_dict, "443", cmd_dummy); /* is already on channel (after invite?) */
2129     dict_insert(irc_func_dict, "461", cmd_dummy); /* Not enough parameters (after TOPIC w/ 0 args) */
2130     dict_insert(irc_func_dict, "467", cmd_dummy); /* Channel key already set */
2131
2132     num_privmsg_funcs = 16;
2133     privmsg_funcs = malloc(sizeof(privmsg_func_t)*num_privmsg_funcs);
2134     memset(privmsg_funcs, 0, sizeof(privmsg_func_t)*num_privmsg_funcs);
2135
2136     num_notice_funcs = 16;
2137     notice_funcs = malloc(sizeof(privmsg_func_t)*num_notice_funcs);
2138     memset(notice_funcs, 0, sizeof(privmsg_func_t)*num_notice_funcs);
2139
2140     userList_init(&dead_users);
2141     reg_del_channel_func(remove_unbursted_channel);
2142     reg_exit_func(parse_cleanup);
2143 }
2144
2145 int
2146 parse_line(char *line, int recursive)
2147 {
2148     char *argv[MAXNUMPARAMS], *origin;
2149     int argc, cmd, res=0;
2150     cmd_func_t *func;
2151
2152     argc = split_line(line, true, MAXNUMPARAMS, argv);
2153     cmd = self->uplink || !argv[0][1] || !argv[0][2];
2154     if (argc > cmd) {
2155         if (cmd) {
2156             if (argv[0][0] == ':') {
2157                 origin = argv[0]+1;
2158             } else if (!argv[0][1] || !argv[0][2]) {
2159                 struct server *sNode = GetServerN(argv[0]);
2160                 origin = sNode ? sNode->name : 0;
2161             } else {
2162                 struct userNode *uNode = GetUserN(argv[0]);
2163                 origin = uNode ? uNode->nick : 0;
2164             }
2165         } else
2166             origin = 0;
2167         if ((func = dict_find(irc_func_dict, argv[cmd], NULL)))
2168             res = func(origin, argc-cmd, argv+cmd);
2169     }
2170     if (!res) {
2171         log_module(MAIN_LOG, LOG_ERROR, "PARSE ERROR on line: %s", unsplit_string(argv, argc, NULL));
2172     } else if (!recursive) {
2173         unsigned int i;
2174         for (i=0; i<dead_users.used; i++)
2175             free_user(dead_users.list[i]);
2176         dead_users.used = 0;
2177     }
2178     return res;
2179 }
2180
2181 static void
2182 parse_foreach(char *target_list, foreach_chanfunc cf, foreach_nonchan nc, foreach_userfunc uf, foreach_nonuser nu, void *data)
2183 {
2184     char *j, old;
2185
2186     do {
2187         j = target_list;
2188         while (*j != 0 && *j != ',')
2189             j++;
2190         old = *j;
2191         *j = 0;
2192
2193         if (IsChannelName(target_list)
2194             || (target_list[0] == '0' && target_list[1] == '\0')) {
2195             struct chanNode *chan = GetChannel(target_list);
2196
2197             if (chan) {
2198                 if (cf)
2199                     cf(chan, data);
2200             } else {
2201                 if (nc)
2202                     nc(target_list, data);
2203             }
2204         } else {
2205             struct userNode *user;
2206             struct privmsg_desc *pd = data;
2207
2208             pd->is_qualified = 0;
2209             if (*target_list == '@') {
2210                 user = NULL;
2211             } else if (strchr(target_list, '@')) {
2212                 struct server *server;
2213
2214                 pd->is_qualified = 1;
2215                 user = GetUserH(strtok(target_list, "@"));
2216                 server = GetServerH(strtok(NULL, "@"));
2217
2218                 if (user && (user->uplink != server)) {
2219                     /* Don't attempt to index into any arrays
2220                        using a user's numeric on another server. */
2221                     user = NULL;
2222                 }
2223             } else {
2224                 user = GetUserN(target_list);
2225             }
2226
2227             if (user) {
2228                 if (uf)
2229                     uf(user, data);
2230             } else {
2231                 if (nu)
2232                     nu(target_list, data);
2233             }
2234         }
2235         target_list = j+1;
2236     } while (old == ',');
2237 }
2238
2239 static int
2240 get_local_numeric(void)
2241 {
2242     static unsigned int next_numeric = 0;
2243     if (self->clients > self->num_mask)
2244         return -1;
2245     while (self->users[next_numeric])
2246         if (++next_numeric > self->num_mask)
2247             next_numeric = 0;
2248     return next_numeric;
2249 }
2250
2251 static void
2252 make_numeric(struct server *svr, int local_num, char *outbuf)
2253 {
2254     int slen, llen;
2255
2256     if (force_n2k || svr->numeric[1]) {
2257         slen = 2;
2258         llen = 3;
2259     } else {
2260         slen = 1;
2261         llen = (local_num < 64*64) ? 2 : 3;
2262     }
2263     strncpy(outbuf, svr->numeric, slen);
2264     inttobase64(outbuf+slen, local_num, llen);
2265     outbuf[slen+llen] = 0;
2266 }
2267
2268 struct server *
2269 AddServer(struct server *uplink, const char *name, int hops, time_t boot, time_t link, const char *numeric, const char *description)
2270 {
2271     struct server* sNode;
2272     int slen, mlen;
2273
2274     if ((sNode = GetServerN(numeric))) {
2275         /* This means we're trying to re-add an existant server.
2276          * To be safe, we should forget the previous incarnation.
2277          * (And all its linked servers.)
2278          *
2279          * It usually only happens in replays when the original
2280          * had a ping timeout and the replay didn't (because
2281          * replaying a ping timeout invariably gets things wrong).
2282          */
2283         DelServer(sNode, 0, NULL);
2284     }
2285
2286     switch (strlen(numeric)) {
2287     case 5: slen = 2; mlen = 3; break;
2288     case 4: slen = 1; mlen = 3; break;
2289     case 3: slen = 1; mlen = 2; break;
2290     default:
2291         log_module(MAIN_LOG, LOG_ERROR, "AddServer(\"%s\", \"%s\", ...): Numeric %s has invalid length.", uplink->name, name, numeric);
2292         return NULL;
2293     }
2294
2295     sNode = calloc(1, sizeof(*sNode));
2296     sNode->uplink = uplink;
2297     safestrncpy(sNode->name, name, sizeof(sNode->name));
2298     sNode->num_mask = base64toint(numeric+slen, mlen);
2299     sNode->hops = hops;
2300     sNode->boot = boot;
2301     sNode->link = link;
2302     strncpy(sNode->numeric, numeric, slen);
2303     safestrncpy(sNode->description, description, sizeof(sNode->description));
2304     sNode->users = calloc(sNode->num_mask+1, sizeof(*sNode->users));
2305     serverList_init(&sNode->children);
2306     if (sNode->uplink) {
2307         /* uplink may be NULL if we're just building ourself */
2308         serverList_append(&sNode->uplink->children, sNode);
2309     }
2310     servers_num[base64toint(numeric, slen)] = sNode;
2311     dict_insert(servers, sNode->name, sNode);
2312     return sNode;
2313 }
2314
2315 void DelServer(struct server* serv, int announce, const char *message)
2316 {
2317     unsigned int i;
2318
2319     /* If we receive an ERROR command before the SERVER
2320      * command a NULL server can be passed */
2321     if (!serv)
2322         return;
2323
2324     /* Hrm, what's the right way to SQUIT some other server?
2325      * (This code is only to handle killing juped servers.) */
2326     if (announce && (serv->uplink == self) && (serv != self->uplink))
2327         irc_squit(serv, message, NULL);
2328
2329     /* must recursively remove servers linked to this one first */
2330     for (i=serv->children.used;i>0;)
2331         if (serv->children.list[--i] != self)
2332             DelServer(serv->children.list[i], false, NULL);
2333
2334     /* clean up server's user hash tables */
2335     for (i=0;i<=serv->num_mask;i++)
2336         if (serv->users[i])
2337             DelUser(serv->users[i], NULL, false, "server delinked");
2338
2339     /* delete server */
2340     if (serv->uplink)
2341         serverList_remove(&serv->uplink->children, serv);
2342     if (serv == self->uplink)
2343         self->uplink = NULL;
2344     servers_num[base64toint(serv->numeric, strlen(serv->numeric))] = NULL;
2345     dict_remove(servers, serv->name);
2346     serverList_clean(&serv->children);
2347     free(serv->users);
2348     free(serv);
2349 }
2350
2351 struct userNode *
2352 AddService(const char *nick, const char *modes, const char *desc, const char *hostname)
2353 {
2354     char numeric[COMBO_NUMERIC_LEN+1];
2355     int local_num = get_local_numeric();
2356     time_t timestamp = now;
2357     struct userNode *old_user = GetUserH(nick);
2358
2359     if (old_user) {
2360         if (IsLocal(old_user))
2361             return old_user;
2362         timestamp = old_user->timestamp - 1;
2363     }
2364     if (local_num == -1) {
2365         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for service %s", nick);
2366         return 0;
2367     }
2368     if (!hostname)
2369         hostname = self->name;
2370     make_numeric(self, local_num, numeric);
2371     /* TODO: Make these modes part of the conf file */
2372     return AddUser(self, nick, nick, hostname, modes ? modes : "+oik", numeric, desc, now, "AAAAAA");
2373 }
2374
2375 struct userNode *
2376 AddClone(const char *nick, const char *ident, const char *hostname, const char *desc)
2377 {
2378     char numeric[COMBO_NUMERIC_LEN+1];
2379     int local_num = get_local_numeric();
2380     time_t timestamp = now;
2381     struct userNode *old_user = GetUserH(nick);
2382
2383     if (old_user) {
2384         if (IsLocal(old_user))
2385             return old_user;
2386         timestamp = old_user->timestamp - 1;
2387     }
2388     if (local_num == -1) {
2389         log_module(MAIN_LOG, LOG_ERROR, "Unable to allocate numnick for clone %s", nick);
2390         return 0;
2391     }
2392     make_numeric(self, local_num, numeric);
2393     return AddUser(self, nick, ident, hostname, "+i", numeric, desc, timestamp, "AAAAAA");
2394 }
2395
2396 int
2397 is_valid_nick(const char *nick) {
2398     unsigned int ii;
2399     /* IRC has some of The Most Fucked-Up ideas about character sets
2400      * in the world.. */
2401     if (!isalpha(*nick) && !strchr("{|}~[\\]^_`", *nick))
2402         return 0;
2403     for (ii = 0; nick[ii]; ++ii)
2404         if (!isalnum(nick[ii]) && !strchr("{|}~[\\]^-_`", nick[ii]))
2405             return 0;
2406     if (strlen(nick) > nicklen)
2407         return 0;
2408     return 1;
2409 }
2410
2411 static struct userNode*
2412 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)
2413 {
2414     struct userNode *oldUser, *uNode;
2415     unsigned int n, ignore_user;
2416
2417     if ((strlen(numeric) < 3) || (strlen(numeric) > 5)) {
2418         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): numeric %s wrong length!", uplink, nick, numeric);
2419         return NULL;
2420     }
2421
2422     if (!uplink) {
2423         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s doesn't exist!", uplink, nick, numeric);
2424         return NULL;
2425     }
2426
2427     if (uplink != GetServerN(numeric)) {
2428         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): server for numeric %s differs from nominal uplink %s.", uplink, nick, numeric, uplink->name);
2429         return NULL;
2430     }
2431
2432     if (!is_valid_nick(nick)) {
2433         log_module(MAIN_LOG, LOG_WARNING, "AddUser(%p, %s, ...): invalid nickname detected.", uplink, nick);
2434         return NULL;
2435     }
2436
2437     ignore_user = 0;
2438     if ((oldUser = GetUserH(nick))) {
2439         if (IsLocal(oldUser) && (IsService(oldUser) || IsPersistent(oldUser))) {
2440             /* The service should collide the new user off. */
2441             oldUser->timestamp = timestamp - 1;
2442             irc_user(oldUser);
2443         }
2444         if (oldUser->timestamp > timestamp) {
2445             /* "Old" user is really newer; remove them */
2446             DelUser(oldUser, 0, 1, "Overruled by older nick");
2447         } else {
2448             /* User being added is too new; do not add them to
2449              * clients, but do add them to the server's list, since it
2450              * will send a KILL and QUIT soon. */
2451             ignore_user = 1;
2452         }
2453     }
2454
2455     /* create new usernode and set all values */
2456     uNode = calloc(1, sizeof(*uNode));
2457     uNode->nick = strdup(nick);
2458     safestrncpy(uNode->ident, ident, sizeof(uNode->ident));
2459     safestrncpy(uNode->info, userinfo, sizeof(uNode->info));
2460     safestrncpy(uNode->hostname, hostname, sizeof(uNode->hostname));
2461     safestrncpy(uNode->numeric, numeric, sizeof(uNode->numeric));
2462     irc_p10_pton(&uNode->ip, realip);
2463
2464     if (irc_in_addr_is_ipv4(uNode->ip)) {
2465       make_virtip((char*)irc_ntoa(&uNode->ip), (char*)irc_ntoa(&uNode->ip), uNode->cryptip);
2466       make_virthost((char*)irc_ntoa(&uNode->ip), uNode->hostname, uNode->crypthost);
2467     } else if (irc_in_addr_is_ipv6(uNode->ip)) {
2468       make_ipv6virthost((char*)irc_ntoa(&uNode->ip), uNode->hostname, uNode->crypthost);
2469     }
2470
2471     uNode->timestamp = timestamp;
2472     modeList_init(&uNode->channels);
2473     uNode->uplink = uplink;
2474     if (++uNode->uplink->clients > uNode->uplink->max_clients) {
2475         uNode->uplink->max_clients = uNode->uplink->clients;
2476     }
2477     uNode->num_local = base64toint(numeric+strlen(uNode->uplink->numeric), 3) & uNode->uplink->num_mask;
2478     uNode->uplink->users[uNode->num_local] = uNode;
2479     mod_usermode(uNode, modes);
2480     if (ignore_user)
2481         return uNode;
2482
2483     dict_insert(clients, uNode->nick, uNode);
2484     if (dict_size(clients) > max_clients) {
2485         max_clients = dict_size(clients);
2486         max_clients_time = now;
2487     }
2488     if (IsLocal(uNode))
2489         irc_user(uNode);
2490     for (n=0; n<nuf_used; n++)
2491         if (nuf_list[n](uNode))
2492             break;
2493
2494     if ((uNode->loc == 1) && (uNode->handle_info))
2495         send_func_list(uNode);
2496
2497     return uNode;
2498 }
2499
2500 /* removes user from it's server's hash table and nick hash table */
2501 void
2502 DelUser(struct userNode* user, struct userNode *killer, int announce, const char *why)
2503 {
2504     unsigned int n;
2505
2506     verify(user);
2507
2508     /* mark them as dead, in case anybody cares */
2509     user->dead = 1;
2510
2511     /* remove pending adduser commands */
2512     wipe_adduser_pending(NULL, user);
2513
2514     /* remove user from all channels */
2515     while (user->channels.used > 0)
2516         DelChannelUser(user, user->channels.list[user->channels.used-1]->channel, false, 0);
2517
2518     /* Call these in reverse order so ChanServ can update presence
2519        information before NickServ nukes the handle_info. */
2520     for (n = duf_used; n > 0; )
2521         duf_list[--n](user, killer, why);
2522
2523     user->uplink->clients--;
2524     user->uplink->users[user->num_local] = NULL;
2525     if (IsOper(user))
2526         userList_remove(&curr_opers, user);
2527     /* remove from global dictionary, but not if after a collide */
2528     if (user == dict_find(clients, user->nick, NULL))
2529         dict_remove(clients, user->nick);
2530
2531     if (IsInvisible(user))
2532         invis_clients--;
2533
2534     if (announce) {
2535         if (IsLocal(user))
2536             irc_quit(user, why);
2537         else
2538             irc_kill(killer, user, why);
2539     }
2540
2541     modeList_clean(&user->channels);
2542     /* We don't free them, in case we try to privmsg them or something
2543      * (like when a stupid oper kills themself).  We just put them onto
2544      * a list of clients that get freed after processing each line.
2545      */
2546     if (dead_users.size)
2547         userList_append(&dead_users, user);
2548     else
2549         free_user(user);
2550 }
2551
2552 static void call_oper_funcs(struct userNode *user);
2553
2554 void mod_usermode(struct userNode *user, const char *mode_change) {
2555     int add = 1;
2556     const char *word = mode_change;
2557
2558     if (!user || !mode_change)
2559         return;
2560
2561     call_user_mode_funcs(user, mode_change);
2562
2563     while (*word != ' ' && *word) word++;
2564     while (*word == ' ') word++;
2565     while (1) {
2566 #define do_user_mode(FLAG) do { if (add) user->modes |= FLAG; else user->modes &= ~FLAG; } while (0)
2567         switch (*mode_change++) {
2568         case 0: case ' ': return;
2569         case '+': add = 1; break;
2570         case '-': add = 0; break;
2571         case 'o':
2572             if (add) {
2573                 if(!IsOper(user)) { /* Dont re-oper an oper */
2574                     userList_append(&curr_opers, user);
2575                     call_oper_funcs(user);
2576                 }
2577             } else {
2578                 userList_remove(&curr_opers, user);
2579             }
2580             do_user_mode(FLAGS_OPER);
2581             break;
2582         case 'O': do_user_mode(FLAGS_LOCOP); break;
2583         case 'i': do_user_mode(FLAGS_INVISIBLE);
2584             if (add)
2585                 invis_clients++;
2586             else
2587                 invis_clients--;
2588             break;
2589         case 'w': do_user_mode(FLAGS_WALLOP); break;
2590         case 's': do_user_mode(FLAGS_SERVNOTICE); break;
2591         case 'd': do_user_mode(FLAGS_DEAF); break;
2592         case 'k': do_user_mode(FLAGS_SERVICE); break;
2593         case 'g': do_user_mode(FLAGS_GLOBAL); break;
2594         // sethost - reed/apples
2595         // case 'h': do_user_mode(FLAGS_HELPER); break;
2596         // I check if there's an 'h' in the first part, and if there,
2597         // then everything after the space becomes their new host.
2598         case 'h': do_user_mode(FLAGS_SETHOST);
2599             if (*word) {
2600                 char sethost[MAXLEN];
2601                 unsigned int ii;
2602                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2603                     sethost[ii++] = *word++;
2604                 sethost[ii] = 0;
2605                 while (*word == ' ')
2606                     word++;
2607                 safestrncpy(user->sethost, sethost, sizeof(user->sethost));
2608             }
2609             break;
2610         case 'x': do_user_mode(FLAGS_HIDDEN_HOST); break;
2611         case 'r':
2612             if (*word) {
2613                 char tag[MAXLEN];
2614                 unsigned int ii;
2615                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2616                     tag[ii++] = *word++;
2617                 tag[ii] = 0;
2618                 while (*word == ' ')
2619                     word++;
2620                 call_account_func(user, tag);
2621             }
2622             break;
2623         case 'f':
2624             if (*word) {
2625                 char host[MAXLEN];
2626                 unsigned int ii;
2627                 for (ii=0; (*word != ' ') && (*word != '\0'); )
2628                     host[ii++] = *word++;
2629                 host[ii] = 0;
2630                 while (*word == ' ')
2631                     word++;
2632                 assign_fakehost(user, host, 0);
2633             }
2634             break;
2635         }
2636 #undef do_user_mode
2637     }
2638 }
2639
2640 struct mod_chanmode *
2641 mod_chanmode_parse(struct chanNode *channel, char **modes, unsigned int argc, unsigned int flags, short base_oplevel)
2642 {
2643     struct mod_chanmode *change;
2644     unsigned int ii, in_arg, ch_arg, add;
2645
2646     if (argc == 0)
2647         return NULL;
2648     if (!(change = mod_chanmode_alloc(argc - 1)))
2649         return NULL;
2650
2651     for (ii = ch_arg = 0, in_arg = add = 1;
2652          (modes[0][ii] != '\0') && (modes[0][ii] != ' ');
2653          ++ii) {
2654         switch (modes[0][ii]) {
2655         case '+':
2656             add = 1;
2657             break;
2658         case '-':
2659             add = 0;
2660             break;
2661 #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)
2662         case 'C': do_chan_mode(MODE_NOCTCPS); break;
2663         case 'D': do_chan_mode(MODE_DELAYJOINS); break;
2664         case 'c': do_chan_mode(MODE_NOCOLORS); break;
2665         case 'i': do_chan_mode(MODE_INVITEONLY); break;
2666         case 'm': do_chan_mode(MODE_MODERATED); break;
2667         case 'n': do_chan_mode(MODE_NOPRIVMSGS); break;
2668         case 'p': do_chan_mode(MODE_PRIVATE); break;
2669         case 'r': do_chan_mode(MODE_REGONLY); break;
2670         case 's': do_chan_mode(MODE_SECRET); break;
2671         case 't': do_chan_mode(MODE_TOPICLIMIT); break;
2672         case 'S': do_chan_mode(MODE_STRIPCOLOR); break;
2673         case 'M': do_chan_mode(MODE_MODUNREG); break;
2674         case 'N': do_chan_mode(MODE_NONOTICE); break;
2675         case 'Q': do_chan_mode(MODE_NOQUITMSGS); break;
2676         case 'T': do_chan_mode(MODE_NOAMSG); break;
2677         case 'O': do_chan_mode(MODE_OPERSONLY); break;
2678         case 'Z': do_chan_mode(MODE_SSLONLY); break;
2679         case 'L': do_chan_mode(MODE_HIDEMODE); break;
2680         case 'z':
2681           if (!(flags & MCP_REGISTERED)) {
2682            do_chan_mode(MODE_REGISTERED);
2683           } else {
2684            mod_chanmode_free(change);
2685            return NULL;
2686           }
2687           break;
2688 #undef do_chan_mode
2689         case 'l':
2690             if (add) {
2691                 if (in_arg >= argc)
2692                     goto error;
2693                 change->modes_set |= MODE_LIMIT;
2694                 change->new_limit = atoi(modes[in_arg++]);
2695             } else {
2696                 change->modes_set &= ~MODE_LIMIT;
2697                 change->modes_clear |= MODE_LIMIT;
2698             }
2699             break;
2700         case 'k':
2701             if (add) {
2702                 if (in_arg >= argc)
2703                     goto error;
2704                 change->modes_set |= MODE_KEY;
2705                 safestrncpy(change->new_key, modes[in_arg++], sizeof(change->new_key));
2706             } else {
2707                 change->modes_clear |= MODE_KEY;
2708                 if (!(flags & MCP_KEY_FREE)) {
2709                     if (in_arg >= argc)
2710                         goto error;
2711                     in_arg++;
2712                 }
2713             }
2714             break;
2715         case 'U':
2716             if (add)
2717             {
2718               if (in_arg >= argc)
2719                   goto error;
2720               change->modes_set |= MODE_UPASS;
2721               safestrncpy(change->new_upass, modes[in_arg++], sizeof(change->new_upass));
2722             } else {
2723                 change->modes_clear |= MODE_UPASS;
2724                 if (!(flags & MCP_UPASS_FREE)) {
2725                     if (in_arg >= argc)
2726                         goto error;
2727                     in_arg++;
2728                 }
2729             }
2730             break;
2731         case 'A':
2732             if (add) {
2733                 if (in_arg >= argc)
2734                     goto error;
2735                 change->modes_set |= MODE_APASS;
2736                 safestrncpy(change->new_apass, modes[in_arg++], sizeof(change->new_apass));
2737             } else {
2738                 change->modes_clear |= MODE_APASS;
2739                 if (!(flags & MCP_APASS_FREE)) {
2740                     if (in_arg >= argc)
2741                       goto error;
2742                     in_arg++;
2743                 }
2744             }
2745             break;
2746         case 'b':
2747             if (!(flags & MCP_ALLOW_OVB))
2748                 goto error;
2749             if (in_arg >= argc)
2750                 goto error;
2751             change->args[ch_arg].mode = MODE_BAN;
2752             if (!add)
2753                 change->args[ch_arg].mode |= MODE_REMOVE;
2754             change->args[ch_arg++].u.hostmask = modes[in_arg++];
2755             break;
2756         case 'e':
2757             if (!(flags & MCP_ALLOW_OVB))
2758                 goto error;
2759             if (in_arg >= argc)
2760                 goto error;
2761             change->args[ch_arg].mode = MODE_EXEMPT;
2762             if (!add)
2763                 change->args[ch_arg].mode |= MODE_REMOVE;
2764             change->args[ch_arg++].u.hostmask = modes[in_arg++];
2765             break;
2766         case 'o': case 'h': case 'v':
2767         {
2768             struct userNode *victim;
2769             char *oplevel_str;
2770             int oplevel;
2771
2772             if (in_arg >= argc)
2773                 goto error;
2774             oplevel_str = strchr(modes[in_arg], ':');
2775             if (oplevel_str)
2776             {
2777                 /* XXYYY M #channel +o XXYYY:<oplevel> */
2778                 *oplevel_str++ = '\0';
2779                 oplevel = parse_oplevel(oplevel_str);
2780                 if (oplevel <= base_oplevel && !(flags & MCP_FROM_SERVER))
2781                     oplevel = base_oplevel + 1;
2782             }
2783             else if (channel->modes & MODE_UPASS)
2784                 oplevel = base_oplevel + 1;
2785             else
2786                 oplevel = -1;
2787
2788             /* Check that oplevel is within bounds. */
2789             if (oplevel > MAXOPLEVEL)
2790                 oplevel = MAXOPLEVEL;
2791
2792             if (!(flags & MCP_ALLOW_OVB))
2793                 goto error;
2794             if (in_arg >= argc)
2795                 goto error;
2796
2797             if (modes[0][ii] == 'o')
2798                 change->args[ch_arg].mode = MODE_CHANOP;
2799             else if (modes[0][ii] == 'h')
2800                 change->args[ch_arg].mode = MODE_HALFOP;
2801             else if (modes[0][ii] == 'v')
2802                 change->args[ch_arg].mode = MODE_VOICE;
2803
2804             if (!add)
2805                 change->args[ch_arg].mode |= MODE_REMOVE;
2806             if (flags & MCP_FROM_SERVER)
2807                 victim = GetUserN(modes[in_arg++]);
2808             else
2809                 victim = GetUserH(modes[in_arg++]);
2810             if (!victim)
2811                 continue;
2812             if ((change->args[ch_arg].u.member = GetUserMode(channel, victim)))
2813             {
2814                 /* Apply the oplevel change */
2815                 change->args[ch_arg].u.member->oplevel = oplevel;
2816                 ch_arg++;
2817             }
2818             break;
2819         }
2820         default:
2821             if (!(flags & MCP_FROM_SERVER))
2822                 goto error;
2823             break;
2824         }
2825     }
2826     change->argc = ch_arg; /* in case any turned out to be ignored */
2827     if (change->modes_set & MODE_SECRET) {
2828         change->modes_set &= ~(MODE_PRIVATE);
2829         change->modes_clear |= MODE_PRIVATE;
2830     } else if (change->modes_set & MODE_PRIVATE) {
2831         change->modes_set &= ~(MODE_SECRET);
2832         change->modes_clear |= MODE_SECRET;
2833     }
2834     return change;
2835   error:
2836     mod_chanmode_free(change);
2837     return NULL;
2838 }
2839
2840 struct chanmode_buffer {
2841     char modes[MAXLEN];
2842     char args[MAXLEN];
2843     struct chanNode *channel;
2844     struct userNode *actor;
2845     unsigned int modes_used;
2846     unsigned int args_used;
2847     size_t chname_len;
2848     unsigned int is_add : 1;
2849     unsigned int is_chanop : 1;
2850 };
2851
2852 static void
2853 mod_chanmode_append(struct chanmode_buffer *buf, char ch, const char *arg)
2854 {
2855     size_t arg_len = strlen(arg);
2856     if (buf->modes_used > (MAXMODEPARAMS) ||
2857         buf->modes_used + buf->args_used + buf->chname_len + arg_len > 450) {
2858         memcpy(buf->modes + buf->modes_used, buf->args, buf->args_used);
2859         buf->modes[buf->modes_used + buf->args_used] = '\0';
2860         irc_mode((buf->is_chanop ? buf->actor : NULL), buf->channel, buf->modes);
2861         buf->modes[0] = buf->is_add ? '+' : '-';
2862         buf->modes_used = 1;
2863         buf->args_used = 0;
2864     }
2865     buf->modes[buf->modes_used++] = ch;
2866     buf->args[buf->args_used++] = ' ';
2867     memcpy(buf->args + buf->args_used, arg, arg_len);
2868     buf->args_used += arg_len;
2869 }
2870
2871 void
2872 mod_chanmode_announce(struct userNode *who, struct chanNode *channel, struct mod_chanmode *change)
2873 {
2874     struct chanmode_buffer chbuf;
2875     unsigned int arg;
2876     struct modeNode *mn;
2877     char int_buff[32], mode = '\0';
2878
2879     assert(change->argc <= change->alloc_argc);
2880     memset(&chbuf, 0, sizeof(chbuf));
2881     chbuf.channel = channel;
2882     chbuf.actor = who;
2883     chbuf.chname_len = strlen(channel->name);
2884
2885     mn = GetUserMode(channel, who);
2886     if ((mn && (mn->modes & MODE_CHANOP)) || off_channel)
2887         chbuf.is_chanop = 1;
2888
2889     /* First remove modes */
2890     chbuf.is_add = 0;
2891     if (change->modes_clear) {
2892         if (mode != '-')
2893             chbuf.modes[chbuf.modes_used++] = mode = '-';
2894 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2895         DO_MODE_CHAR(PRIVATE, 'p');
2896         DO_MODE_CHAR(SECRET, 's');
2897         DO_MODE_CHAR(MODERATED, 'm');
2898         DO_MODE_CHAR(TOPICLIMIT, 't');
2899         DO_MODE_CHAR(INVITEONLY, 'i');
2900         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2901         DO_MODE_CHAR(LIMIT, 'l');
2902         DO_MODE_CHAR(DELAYJOINS, 'D');
2903         DO_MODE_CHAR(REGONLY, 'r');
2904         DO_MODE_CHAR(NOCOLORS, 'c');
2905         DO_MODE_CHAR(NOCTCPS, 'C');
2906         DO_MODE_CHAR(STRIPCOLOR, 'S');
2907         DO_MODE_CHAR(MODUNREG, 'M');
2908         DO_MODE_CHAR(NONOTICE, 'N');
2909         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2910         DO_MODE_CHAR(NOAMSG, 'T');
2911         DO_MODE_CHAR(OPERSONLY, 'O');
2912         DO_MODE_CHAR(REGISTERED, 'z');
2913         DO_MODE_CHAR(SSLONLY, 'Z');
2914         DO_MODE_CHAR(HIDEMODE, 'L');
2915 #undef DO_MODE_CHAR
2916         if (change->modes_clear & channel->modes & MODE_KEY)
2917             mod_chanmode_append(&chbuf, 'k', channel->key);
2918         if (change->modes_clear & channel->modes & MODE_UPASS)
2919             mod_chanmode_append(&chbuf, 'U', channel->upass);
2920         if (change->modes_clear * channel->modes & MODE_APASS)
2921             mod_chanmode_append(&chbuf, 'A', channel->apass);
2922     }
2923     for (arg = 0; arg < change->argc; ++arg) {
2924         if (!(change->args[arg].mode & MODE_REMOVE))
2925             continue;
2926         if (mode != '-')
2927             chbuf.modes[chbuf.modes_used++] = mode = '-';
2928         switch (change->args[arg].mode & ~MODE_REMOVE) {
2929         case MODE_BAN:
2930             mod_chanmode_append(&chbuf, 'b', change->args[arg].u.hostmask);
2931             break;
2932         case MODE_EXEMPT:
2933             mod_chanmode_append(&chbuf, 'e', change->args[arg].u.hostmask);
2934             break;
2935         default:
2936             if (change->args[arg].mode & MODE_CHANOP)
2937                 mod_chanmode_append(&chbuf, 'o', change->args[arg].u.member->user->numeric);
2938             if (change->args[arg].mode & MODE_HALFOP)
2939                 mod_chanmode_append(&chbuf, 'h', change->args[arg].u.member->user->numeric);
2940             if (change->args[arg].mode & MODE_VOICE)
2941                 mod_chanmode_append(&chbuf, 'v', change->args[arg].u.member->user->numeric);
2942             break;
2943         }
2944     }
2945
2946     /* Then set them */
2947     chbuf.is_add = 1;
2948     if (change->modes_set) {
2949         if (mode != '+')
2950             chbuf.modes[chbuf.modes_used++] = mode = '+';
2951 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) chbuf.modes[chbuf.modes_used++] = CHAR
2952         DO_MODE_CHAR(PRIVATE, 'p');
2953         DO_MODE_CHAR(SECRET, 's');
2954         DO_MODE_CHAR(MODERATED, 'm');
2955         DO_MODE_CHAR(TOPICLIMIT, 't');
2956         DO_MODE_CHAR(INVITEONLY, 'i');
2957         DO_MODE_CHAR(NOPRIVMSGS, 'n');
2958         DO_MODE_CHAR(DELAYJOINS, 'D');
2959         DO_MODE_CHAR(REGONLY, 'r');
2960         DO_MODE_CHAR(NOCOLORS, 'c');
2961         DO_MODE_CHAR(NOCTCPS, 'C');
2962         DO_MODE_CHAR(STRIPCOLOR, 'S');
2963         DO_MODE_CHAR(MODUNREG, 'M');
2964         DO_MODE_CHAR(NONOTICE, 'N');
2965         DO_MODE_CHAR(NOQUITMSGS, 'Q');
2966         DO_MODE_CHAR(NOAMSG, 'T');
2967         DO_MODE_CHAR(OPERSONLY, 'O');
2968         DO_MODE_CHAR(REGISTERED, 'z');
2969         DO_MODE_CHAR(SSLONLY, 'Z');
2970         DO_MODE_CHAR(HIDEMODE, 'L');
2971 #undef DO_MODE_CHAR
2972         if(change->modes_set & MODE_KEY)
2973             mod_chanmode_append(&chbuf, 'k', change->new_key);
2974         if (change->modes_set & MODE_UPASS)
2975             mod_chanmode_append(&chbuf, 'U', change->new_upass);
2976         if (change->modes_set & MODE_APASS)
2977             mod_chanmode_append(&chbuf, 'A', change->new_apass);
2978         if(change->modes_set & MODE_LIMIT) {
2979             sprintf(int_buff, "%d", change->new_limit);
2980             mod_chanmode_append(&chbuf, 'l', int_buff);
2981         }
2982     }
2983     for (arg = 0; arg < change->argc; ++arg) {
2984         if (change->args[arg].mode & MODE_REMOVE)
2985             continue;
2986         if (mode != '+')
2987             chbuf.modes[chbuf.modes_used++] = mode = '+';
2988         switch (change->args[arg].mode) {
2989         case MODE_BAN:
2990             mod_chanmode_append(&chbuf, 'b', change->args[arg].u.hostmask);
2991             break;
2992         case MODE_EXEMPT:
2993             mod_chanmode_append(&chbuf, 'e', change->args[arg].u.hostmask);
2994             break;
2995         default:
2996             if (change->args[arg].mode & MODE_CHANOP)
2997                 mod_chanmode_append(&chbuf, 'o', change->args[arg].u.member->user->numeric);
2998             if (change->args[arg].mode & MODE_HALFOP)
2999                 mod_chanmode_append(&chbuf, 'h', change->args[arg].u.member->user->numeric);
3000             if (change->args[arg].mode & MODE_VOICE)
3001                 mod_chanmode_append(&chbuf, 'v', change->args[arg].u.member->user->numeric);
3002             break;
3003         }
3004     }
3005
3006     /* Flush the buffer and apply changes locally */
3007     if (chbuf.modes_used > 0) {
3008         memcpy(chbuf.modes + chbuf.modes_used, chbuf.args, chbuf.args_used);
3009         chbuf.modes[chbuf.modes_used + chbuf.args_used] = '\0';
3010         irc_mode((chbuf.is_chanop ? chbuf.actor : NULL), chbuf.channel, chbuf.modes);
3011     }
3012     mod_chanmode_apply(who, channel, change);
3013 }
3014
3015 char *
3016 mod_chanmode_format(struct mod_chanmode *change, char *outbuff)
3017 {
3018     unsigned int used = 0;
3019     assert(change->argc <= change->alloc_argc);
3020     if (change->modes_clear) {
3021         outbuff[used++] = '-';
3022 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_clear & MODE_##BIT) outbuff[used++] = CHAR
3023         DO_MODE_CHAR(PRIVATE, 'p');
3024         DO_MODE_CHAR(SECRET, 's');
3025         DO_MODE_CHAR(MODERATED, 'm');
3026         DO_MODE_CHAR(TOPICLIMIT, 't');
3027         DO_MODE_CHAR(INVITEONLY, 'i');
3028         DO_MODE_CHAR(NOPRIVMSGS, 'n');
3029         DO_MODE_CHAR(LIMIT, 'l');
3030         DO_MODE_CHAR(KEY, 'k');
3031         DO_MODE_CHAR(UPASS, 'U');
3032         DO_MODE_CHAR(APASS, 'A');
3033         DO_MODE_CHAR(DELAYJOINS, 'D');
3034         DO_MODE_CHAR(REGONLY, 'r');
3035         DO_MODE_CHAR(NOCOLORS, 'c');
3036         DO_MODE_CHAR(NOCTCPS, 'C');
3037         DO_MODE_CHAR(STRIPCOLOR, 'S');
3038         DO_MODE_CHAR(MODUNREG, 'M');
3039         DO_MODE_CHAR(NONOTICE, 'N');
3040         DO_MODE_CHAR(NOQUITMSGS, 'Q');
3041         DO_MODE_CHAR(NOAMSG, 'T');
3042         DO_MODE_CHAR(OPERSONLY, 'O');
3043         DO_MODE_CHAR(REGISTERED, 'z');
3044         DO_MODE_CHAR(SSLONLY, 'Z');
3045         DO_MODE_CHAR(HIDEMODE, 'L');
3046 #undef DO_MODE_CHAR
3047     }
3048     if (change->modes_set) {
3049         outbuff[used++] = '+';
3050 #define DO_MODE_CHAR(BIT, CHAR) if (change->modes_set & MODE_##BIT) outbuff[used++] = CHAR
3051         DO_MODE_CHAR(PRIVATE, 'p');
3052         DO_MODE_CHAR(SECRET, 's');
3053         DO_MODE_CHAR(MODERATED, 'm');
3054         DO_MODE_CHAR(TOPICLIMIT, 't');
3055         DO_MODE_CHAR(INVITEONLY, 'i');
3056         DO_MODE_CHAR(NOPRIVMSGS, 'n');
3057         DO_MODE_CHAR(DELAYJOINS, 'D');
3058         DO_MODE_CHAR(REGONLY, 'r');
3059         DO_MODE_CHAR(NOCOLORS, 'c');
3060         DO_MODE_CHAR(NOCTCPS, 'C');
3061         DO_MODE_CHAR(STRIPCOLOR, 'S');
3062         DO_MODE_CHAR(MODUNREG, 'M');
3063         DO_MODE_CHAR(NONOTICE, 'N');
3064         DO_MODE_CHAR(NOQUITMSGS, 'Q');
3065         DO_MODE_CHAR(NOAMSG, 'T');
3066         DO_MODE_CHAR(OPERSONLY, 'O');
3067         DO_MODE_CHAR(REGISTERED, 'z');
3068         DO_MODE_CHAR(SSLONLY, 'Z');
3069         DO_MODE_CHAR(HIDEMODE, 'L');
3070 #undef DO_MODE_CHAR
3071         switch (change->modes_set & (MODE_KEY|MODE_LIMIT|MODE_APASS|MODE_UPASS)) {
3072         /* Doing this implementation has been a pain in the arse, I hope I didn't forget a possible combination */
3073         case MODE_KEY|MODE_LIMIT|MODE_APASS|MODE_UPASS:
3074             used += sprintf(outbuff+used, "lkAU %d %s %s %s", change->new_limit, change->new_key,change->new_apass, change->new_upass);
3075             break;
3076
3077         case MODE_KEY|MODE_LIMIT|MODE_APASS:
3078             used += sprintf(outbuff+used, "lkA %d %s %s", change->new_limit, change->new_key, change->new_apass);
3079             break;
3080         case MODE_KEY|MODE_LIMIT|MODE_UPASS:
3081             used += sprintf(outbuff+used, "lkU %d %s %s", change->new_limit, change->new_key, change->new_upass);
3082             break;
3083         case MODE_KEY|MODE_APASS|MODE_UPASS:
3084             used += sprintf(outbuff+used, "kAU %s %s %s", change->new_key, change->new_apass, change->new_upass);
3085             break;
3086
3087         case MODE_KEY|MODE_APASS:
3088             used += sprintf(outbuff+used, "kA %s %s", change->new_key, change->new_apass);
3089             break;
3090         case MODE_KEY|MODE_UPASS:
3091             used += sprintf(outbuff+used, "kU %s %s", change->new_key, change->new_upass);
3092             break;
3093         case MODE_KEY|MODE_LIMIT:
3094             used += sprintf(outbuff+used, "lk %d %s", change->new_limit, change->new_key);
3095             break;
3096
3097         case MODE_LIMIT|MODE_UPASS:
3098             used += sprintf(outbuff+used, "lU %d %s", change->new_limit, change->new_upass);
3099             break;
3100         case MODE_LIMIT|MODE_APASS:
3101             used += sprintf(outbuff+used, "lA %d %s", change->new_limit, change->new_apass);
3102             break;
3103         case MODE_APASS|MODE_UPASS:
3104             used += sprintf(outbuff+used, "AU %s %s", change->new_apass, change->new_upass);
3105
3106         case MODE_LIMIT|MODE_APASS|MODE_UPASS:
3107             used += sprintf(outbuff+used, "lAU %d %s %s", change->new_limit, change->new_apass, change->new_upass);
3108             break;
3109
3110         case MODE_APASS:
3111             used += sprintf(outbuff+used, "A %s", change->new_apass);
3112             break;
3113         case MODE_UPASS:
3114             used += sprintf(outbuff+used, "U %s", change->new_upass);
3115             break;
3116         case MODE_KEY:
3117             used += sprintf(outbuff+used, "k %s", change->new_key);
3118             break;
3119         case MODE_LIMIT:
3120             used += sprintf(outbuff+used, "l %d", change->new_limit);
3121             break;
3122         }
3123     }
3124     outbuff[used] = 0;
3125     return outbuff;
3126 }
3127
3128 static int
3129 clear_chanmode(struct chanNode *channel, const char *modes)
3130 {
3131     unsigned int remove;
3132
3133     for (remove = 0; *modes; modes++) {
3134         switch (*modes) {
3135         case 'o': remove |= MODE_CHANOP; break;
3136         case 'h': remove |= MODE_HALFOP; break;
3137         case 'v': remove |= MODE_VOICE; break;
3138         case 'p': remove |= MODE_PRIVATE; break;
3139         case 's': remove |= MODE_SECRET; break;
3140         case 'm': remove |= MODE_MODERATED; break;
3141         case 't': remove |= MODE_TOPICLIMIT; break;
3142         case 'i': remove |= MODE_INVITEONLY; break;
3143         case 'n': remove |= MODE_NOPRIVMSGS; break;
3144         case 'k':
3145             remove |= MODE_KEY;
3146             channel->key[0] = '\0';
3147             break;
3148         case 'A':
3149             remove |= MODE_APASS;
3150             channel->apass[0] = '\0';
3151             break;
3152         case 'U':
3153             remove |= MODE_UPASS;
3154             channel->upass[0] = '\0';
3155             break;
3156         case 'l':
3157             remove |= MODE_LIMIT;
3158             channel->limit = 0;
3159             break;
3160         case 'b': remove |= MODE_BAN; break;
3161         case 'e': remove |= MODE_EXEMPT; break;
3162         case 'D': remove |= MODE_DELAYJOINS; break;
3163         case 'r': remove |= MODE_REGONLY; break;
3164         case 'c': remove |= MODE_NOCOLORS; break;
3165         case 'C': remove |= MODE_NOCTCPS; break;
3166         case 'S': remove |= MODE_STRIPCOLOR; break;
3167         case 'M': remove |= MODE_MODUNREG; break;
3168         case 'N': remove |= MODE_NONOTICE; break;
3169         case 'Q': remove |= MODE_NOQUITMSGS; break;
3170         case 'T': remove |= MODE_NOAMSG; break;
3171         case 'O': remove |= MODE_OPERSONLY; break;
3172         case 'z': remove |= MODE_REGISTERED; break;
3173         case 'Z': remove |= MODE_SSLONLY; break;
3174         case 'L': remove |= MODE_HIDEMODE; break;
3175         }
3176     }
3177
3178     if (!remove)
3179         return 1;
3180
3181     /* Remove simple modes. */
3182     channel->modes &= ~remove;
3183
3184     /* If removing bans, kill 'em all. */
3185     if ((remove & MODE_BAN) && channel->banlist.used) {
3186         unsigned int i;
3187         for (i=0; i<channel->banlist.used; i++)
3188             free(channel->banlist.list[i]);
3189         channel->banlist.used = 0;
3190     }
3191
3192     /* If removing exempts, kill 'em all. */
3193     if ((remove & MODE_EXEMPT) && channel->exemptlist.used) {
3194         unsigned int i;
3195         for (i=0; i<channel->exemptlist.used; i++)
3196             free(channel->exemptlist.list[i]);
3197         channel->exemptlist.used = 0;
3198     }
3199
3200     /* Remove member modes. */
3201     if ((remove & (MODE_CHANOP | MODE_HALFOP | MODE_VOICE)) && channel->members.used) {
3202         int mask = ~(remove & (MODE_CHANOP | MODE_HALFOP | MODE_VOICE));
3203         unsigned int i;
3204
3205         for (i = 0; i < channel->members.used; i++)
3206             channel->members.list[i]->modes &= mask;
3207     }
3208
3209     return 1;
3210 }
3211
3212 void
3213 reg_privmsg_func(struct userNode *user, privmsg_func_t handler)
3214 {
3215     unsigned int numeric = user->num_local;
3216     if (numeric >= num_privmsg_funcs) {
3217         int newnum = numeric + 8;
3218         privmsg_funcs = realloc(privmsg_funcs, newnum*sizeof(privmsg_func_t));
3219         memset(privmsg_funcs+num_privmsg_funcs, 0, (newnum-num_privmsg_funcs)*sizeof(privmsg_func_t));
3220         num_privmsg_funcs = newnum;
3221     }
3222     if (privmsg_funcs[numeric])
3223         log_module(MAIN_LOG, LOG_WARNING, "re-registering new privmsg handler for numeric %d", numeric);
3224     privmsg_funcs[numeric] = handler;
3225 }
3226
3227 void
3228 unreg_privmsg_func(struct userNode *user, privmsg_func_t handler)
3229 {
3230     unsigned int x;
3231
3232     if (!user || handler)
3233       return; /* this really only works with users */
3234
3235     memset(privmsg_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3236
3237     for (x = user->num_local+1; x < num_privmsg_funcs; x++)
3238        memmove(privmsg_funcs+x-1, privmsg_funcs+x, sizeof(privmsg_func_t));
3239
3240     privmsg_funcs = realloc(privmsg_funcs, num_privmsg_funcs*sizeof(privmsg_func_t));
3241     num_privmsg_funcs--;
3242 }
3243
3244
3245 void
3246 reg_notice_func(struct userNode *user, privmsg_func_t handler)
3247 {
3248     unsigned int numeric = user->num_local;
3249     if (numeric >= num_notice_funcs) {
3250         int newnum = numeric + 8;
3251         notice_funcs = realloc(notice_funcs, newnum*sizeof(privmsg_func_t));
3252         memset(notice_funcs+num_notice_funcs, 0, (newnum-num_notice_funcs)*sizeof(privmsg_func_t));
3253         num_notice_funcs = newnum;
3254     }
3255     if (notice_funcs[numeric])
3256         log_module(MAIN_LOG, LOG_WARNING, "re-registering new notice handler for numeric %d", numeric);
3257     notice_funcs[numeric] = handler;
3258 }
3259
3260 void
3261 unreg_notice_func(struct userNode *user, privmsg_func_t handler)
3262 {
3263     unsigned int x;
3264
3265     if (!user || handler)
3266           return; /* this really only works with users */
3267
3268     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3269
3270     for (x = user->num_local+1; x < num_notice_funcs; x++)
3271        memmove(notice_funcs+x-1, notice_funcs+x, sizeof(privmsg_func_t));
3272
3273     memset(notice_funcs+user->num_local, 0, sizeof(privmsg_func_t));
3274     notice_funcs = realloc(notice_funcs, num_notice_funcs*sizeof(privmsg_func_t));
3275     num_notice_funcs--;
3276 }
3277
3278 void
3279 reg_oper_func(oper_func_t handler)
3280 {
3281     if (of_used == of_size) {
3282         if (of_size) {
3283             of_size <<= 1;
3284             of_list = realloc(of_list, of_size*sizeof(oper_func_t));
3285         } else {
3286             of_size = 8;
3287             of_list = malloc(of_size*sizeof(oper_func_t));
3288         }
3289     }
3290     of_list[of_used++] = handler;
3291 }
3292
3293 static void
3294 call_oper_funcs(struct userNode *user)
3295 {
3296     unsigned int n;
3297     if (IsLocal(user))
3298         return;
3299     for (n=0; n<of_used; n++)
3300         of_list[n](user);
3301 }
3302
3303 static void
3304 send_burst(void)
3305 {
3306     unsigned int i, hop, max_hop=1;
3307     dict_iterator_t it;
3308
3309     /* burst (juped) servers, closest first (except self, which is sent already) */
3310     for (i=0; i<ArrayLength(servers_num); i++)
3311         if (servers_num[i] && servers_num[i]->hops > max_hop)
3312             max_hop = servers_num[i]->hops;
3313     for (hop=1; hop<=max_hop; hop++) {
3314         for (i=0;i<ArrayLength(servers_num);i++) {
3315             if (servers_num[i]
3316                 && (servers_num[i]->hops == hop)
3317                 && (servers_num[i] != self->uplink))
3318                 irc_server(servers_num[i]);
3319         }
3320     }
3321
3322     /* burst local nicks */
3323     for (i=0; i<=self->num_mask; i++)
3324         if (self->users[i])
3325             irc_user(self->users[i]);
3326
3327     /* build dict of unbursted channel names (just copy existing channels) */
3328     unbursted_channels = dict_new();
3329     for (it = dict_first(channels); it; it = iter_next(it))
3330         dict_insert(unbursted_channels, iter_key(it), iter_data(it));
3331 }
3332
3333 /*
3334  * Oplevel parsing
3335  */
3336 static int
3337 parse_oplevel(char *str)
3338 {
3339     int oplevel = 0;
3340     while (isdigit(*str))
3341         oplevel = oplevel * 10 + *str++ - '0';
3342     return oplevel;
3343 }
3344