ircd/parse.c

   1 /*
   2  * IRC - Internet Relay Chat, common/parse.c
   3  * Copyright (C) 1990 Jarkko Oikarinen and
   4  *                    University of Oulu, Computing Center
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 1, or (at your option)
   9  * 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 this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20 /** @file
  21  * @brief Parse input from IRC clients and other servers.
  22  * @version $Id: parse.c,v 1.54 2005/09/27 03:54:46 entrope Exp $
  23  */
  24 #include "config.h"
  25
  26 #include "parse.h"
  27 #include "client.h"
  28 #include "channel.h"
  29 #include "handlers.h"
  30 #include "hash.h"
  31 #include "ircd.h"
  32 #include "ircd_alloc.h"
  33 #include "ircd_chattr.h"
  34 #include "ircd_features.h"
  35 #include "ircd_log.h"
  36 #include "ircd_reply.h"
  37 #include "ircd_string.h"
  38 #include "msg.h"
  39 #include "numeric.h"
  40 #include "numnicks.h"
  41 #include "opercmds.h"
  42 #include "querycmds.h"
  43 #include "res.h"
  44 #include "s_bsd.h"
  45 #include "s_conf.h"
  46 #include "s_debug.h"
  47 #include "s_misc.h"
  48 #include "s_numeric.h"
  49 #include "s_user.h"
  50 #include "send.h"
  51 #include "struct.h"
  52 #include "sys.h"
  53 #include "whocmds.h"
  54 #include "whowas.h"
  55
  56 /* #include <assert.h> -- Now using assert in ircd_log.h */
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 /*
  61  * Message Tree stuff mostly written by orabidoo, with changes by Dianora.
  62  * Adapted to Undernet, adding token support, etc by comstud 10/06/97
  63  *
  64  * completely rewritten June 2, 2003 - Dianora
  65  *
  66  * This has always just been a trie. Look at volume III of Knuth ACP
  67  *
  68  *
  69  * ok, you start out with an array of pointers, each one corresponds
  70  * to a letter at the current position in the command being examined.
  71  *
  72  * so roughly you have this for matching 'trie' or 'tie'
  73  *
  74  * 't' points -> [MessageTree *] 'r' -> [MessageTree *] -> 'i'
  75  *   -> [MessageTree *] -> [MessageTree *] -> 'e' and matches
  76  *
  77  *                               'i' -> [MessageTree *] -> 'e' and matches
  78  */
  79
  80 /** Number of children under a trie node. */
  81 #define MAXPTRLEN       32      /* Must be a power of 2, and
  82                                  * larger than 26 [a-z]|[A-Z]
  83                                  * its used to allocate the set
  84                                  * of pointers at each node of the tree
  85                                  * There are MAXPTRLEN pointers at each node.
  86                                  * Obviously, there have to be more pointers
  87                                  * Than ASCII letters. 32 is a nice number
  88                                  * since there is then no need to shift
  89                                  * 'A'/'a' to base 0 index, at the expense
  90                                  * of a few never used pointers. For a small
  91                                  * parser like this, this is a good compromise
  92                                  * and does make it somewhat faster.
  93                                  *
  94                                  * - Dianora
  95                                  */
  96
  97 /** Node in the command lookup trie. */
  98 struct MessageTree {
  99   struct Message *msg; /**< Message (if any) if the string ends now. */
 100   struct MessageTree *pointers[MAXPTRLEN]; /**< Child nodes for each letter. */
 101 };
 102
 103 /** Root of command lookup trie. */
 104 static struct MessageTree msg_tree;
 105 static struct MessageTree tok_tree;
 106
 107 /** Array of all supported commands. */
 108 struct Message msgtab[] = {
 109   {
 110     MSG_PRIVATE,
 111     TOK_PRIVATE,
 112     0, MAXPARA, MFLG_SLOW, 0, NULL,
 113     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 114     { m_unregistered, m_privmsg, ms_privmsg, mo_privmsg, m_ignore }
 115   },
 116   {
 117     MSG_NICK,
 118     TOK_NICK,
 119     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 120     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 121     { m_nick, m_nick, ms_nick, m_nick, m_ignore }
 122   },
 123   {
 124     MSG_NOTICE,
 125     TOK_NOTICE,
 126     0, MAXPARA, MFLG_SLOW | MFLG_IGNORE, 0, NULL,
 127     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 128     { m_ignore, m_notice, ms_notice, mo_notice, m_ignore }
 129   },
 130   {
 131     MSG_WALLCHOPS,
 132     TOK_WALLCHOPS,
 133     0, MAXPARA, MFLG_SLOW, 0, NULL,
 134     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 135     { m_unregistered, m_wallchops, ms_wallchops, m_wallchops, m_ignore }
 136   },
 137   {
 138     MSG_WALLVOICES,
 139     TOK_WALLVOICES,
 140     0, MAXPARA, MFLG_SLOW, 0, NULL,
 141     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 142     { m_unregistered, m_wallvoices, ms_wallvoices, m_wallvoices, m_ignore }
 143   },
 144   {
 145     MSG_CPRIVMSG,
 146     TOK_CPRIVMSG,
 147     0, MAXPARA, MFLG_SLOW, 0, NULL,
 148     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 149     { m_unregistered, m_cprivmsg, m_ignore, m_cprivmsg, m_ignore }
 150   },
 151   {
 152     MSG_CNOTICE,
 153     TOK_CNOTICE,
 154     0, MAXPARA, MFLG_SLOW, 0, NULL,
 155     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 156     { m_unregistered, m_cnotice, m_ignore, m_cnotice, m_ignore }
 157   },
 158   {
 159     MSG_JOIN,
 160     TOK_JOIN,
 161     0, MAXPARA, MFLG_SLOW, 0, NULL,
 162     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 163     { m_unregistered, m_join, ms_join, m_join, m_ignore }
 164   },
 165   {
 166     MSG_MODE,
 167     TOK_MODE,
 168     0, MAXPARA, MFLG_SLOW, 0, NULL,
 169     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 170     { m_unregistered, m_mode, ms_mode, m_mode, m_ignore }
 171   },
 172   {
 173     MSG_BURST,
 174     TOK_BURST,
 175     0, MAXPARA, MFLG_SLOW, 0, NULL,
 176     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 177     { m_ignore, m_ignore, ms_burst, m_ignore, m_ignore }
 178   },
 179   {
 180     MSG_CREATE,
 181     TOK_CREATE,
 182     0, MAXPARA, MFLG_SLOW, 0, NULL,
 183     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 184     { m_ignore, m_ignore, ms_create, m_ignore, m_ignore }
 185   },
 186   {
 187     MSG_DESTRUCT,
 188     TOK_DESTRUCT,
 189     0, MAXPARA, MFLG_SLOW, 0, NULL,
 190     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 191     { m_ignore, m_ignore, ms_destruct, m_ignore, m_ignore }
 192   },
 193   {
 194     MSG_QUIT,
 195     TOK_QUIT,
 196     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 197     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 198     { m_quit, m_quit, ms_quit, m_quit, m_ignore }
 199   },
 200   {
 201     MSG_PART,
 202     TOK_PART,
 203     0, MAXPARA, MFLG_SLOW, 0, NULL,
 204     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 205     { m_unregistered, m_part, ms_part, m_part, m_ignore }
 206   },
 207   {
 208     MSG_TOPIC,
 209     TOK_TOPIC,
 210     0, MAXPARA, MFLG_SLOW, 0, NULL,
 211     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 212     { m_unregistered, m_topic, ms_topic, m_topic, m_ignore }
 213   },
 214   {
 215     MSG_INVITE,
 216     TOK_INVITE,
 217     0, MAXPARA, MFLG_SLOW, 0, NULL,
 218     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 219     { m_unregistered, m_invite, ms_invite, m_invite, m_ignore }
 220   },
 221   {
 222     MSG_KICK,
 223     TOK_KICK,
 224     0, MAXPARA, MFLG_SLOW, 0, NULL,
 225     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 226     { m_unregistered, m_kick, ms_kick, m_kick, m_ignore }
 227   },
 228   {
 229     MSG_WALLOPS,
 230     TOK_WALLOPS,
 231     0, MAXPARA, MFLG_SLOW, 0, NULL,
 232     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 233     { m_unregistered, m_not_oper, ms_wallops, mo_wallops, m_ignore }
 234   },
 235   {
 236     MSG_WALLUSERS,
 237     TOK_WALLUSERS,
 238     0, MAXPARA, MFLG_SLOW, 0, NULL,
 239     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 240     { m_unregistered, m_not_oper, ms_wallusers, mo_wallusers, m_ignore }
 241   },
 242   {
 243     MSG_DESYNCH,
 244     TOK_DESYNCH,
 245     0, MAXPARA, MFLG_SLOW, 0, NULL,
 246     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 247     { m_ignore, m_ignore, ms_desynch, m_ignore, m_ignore }
 248   },
 249   {
 250     MSG_PING,
 251     TOK_PING,
 252     0, MAXPARA, MFLG_SLOW, 0, NULL,
 253     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 254     { m_unregistered, m_ping, ms_ping, mo_ping, m_ignore }
 255   },
 256   {
 257     MSG_PONG,
 258     TOK_PONG,
 259     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 260     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 261     { mr_pong, m_pong, ms_pong, m_pong, m_ignore }
 262   },
 263   {
 264     MSG_ERROR,
 265     TOK_ERROR,
 266     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 267     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 268     { mr_error, m_ignore, ms_error, m_ignore, m_ignore }
 269   },
 270   {
 271     MSG_KILL,
 272     TOK_KILL,
 273     0, MAXPARA, MFLG_SLOW, 0, NULL,
 274     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 275     { m_unregistered, m_not_oper, ms_kill, mo_kill, m_ignore }
 276   },
 277   {
 278     MSG_USER,
 279     TOK_USER,
 280     0, MAXPARA, MFLG_SLOW, 0, NULL,
 281     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 282     { m_user, m_registered, m_ignore, m_registered, m_ignore }
 283   },
 284   {
 285     MSG_AWAY,
 286     TOK_AWAY,
 287     0, MAXPARA, MFLG_SLOW, 0, NULL,
 288     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 289     { m_unregistered, m_away, ms_away, m_away, m_ignore }
 290   },
 291   {
 292     MSG_ISON,
 293     TOK_ISON,
 294     0, 1, MFLG_SLOW, 0, NULL,
 295     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 296     { m_unregistered, m_ison, m_ignore, m_ison, m_ignore }
 297   },
 298   {
 299     MSG_SERVER,
 300     TOK_SERVER,
 301     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 302     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 303     { mr_server, m_registered, ms_server, m_registered, m_ignore }
 304   },
 305   {
 306     MSG_SQUIT,
 307     TOK_SQUIT,
 308     0, MAXPARA, MFLG_SLOW, 0, NULL,
 309     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 310     { m_unregistered, m_not_oper, ms_squit, mo_squit, m_ignore }
 311   },
 312   {
 313     MSG_WHOIS,
 314     TOK_WHOIS,
 315     0, MAXPARA, MFLG_SLOW, 0, NULL,
 316     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 317     { m_unregistered, m_whois, ms_whois, m_whois, m_ignore }
 318   },
 319   {
 320     MSG_WHO,
 321     TOK_WHO,
 322     0, MAXPARA, MFLG_SLOW, 0, NULL,
 323     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 324     { m_unregistered, m_who, m_ignore, m_who, m_ignore }
 325   },
 326   {
 327     MSG_WHOWAS,
 328     TOK_WHOWAS,
 329     0, MAXPARA, MFLG_SLOW, 0, NULL,
 330     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 331     { m_unregistered, m_whowas, m_whowas, m_whowas, m_ignore }
 332   },
 333   {
 334     MSG_LIST,
 335     TOK_LIST,
 336     0, MAXPARA, MFLG_SLOW, 0, NULL,
 337     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 338     { m_unregistered, m_list, m_ignore, m_list, m_ignore }
 339   },
 340   {
 341     MSG_NAMES,
 342     TOK_NAMES,
 343     0, MAXPARA, MFLG_SLOW, 0, NULL,
 344     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 345     { m_unregistered, m_names, ms_names, m_names, m_ignore }
 346   },
 347   {
 348     MSG_USERHOST,
 349     TOK_USERHOST,
 350     0, 1, MFLG_SLOW, 0, NULL,
 351     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 352     { m_unregistered, m_userhost, m_ignore, m_userhost, m_ignore }
 353   },
 354   {
 355     MSG_USERIP,
 356     TOK_USERIP,
 357     0, 1, MFLG_SLOW, 0, NULL,
 358     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 359     { m_unregistered, m_userip, m_ignore, m_userip, m_ignore }
 360   },
 361   {
 362     MSG_TRACE,
 363     TOK_TRACE,
 364     0, MAXPARA, MFLG_SLOW, 0, NULL,
 365     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 366     { m_unregistered, m_trace, ms_trace, mo_trace, m_ignore }
 367   },
 368   {
 369     MSG_PASS,
 370     TOK_PASS,
 371     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 372     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 373     { mr_pass, m_registered, m_ignore, m_registered, m_ignore }
 374   },
 375   {
 376     MSG_LUSERS,
 377     TOK_LUSERS,
 378     0, MAXPARA, MFLG_SLOW, 0, NULL,
 379     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 380     { m_unregistered, m_lusers, ms_lusers, m_lusers, m_ignore }
 381   },
 382   {
 383     MSG_TIME,
 384     TOK_TIME,
 385     0, MAXPARA, MFLG_SLOW, 0, NULL,
 386     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 387     { m_unregistered, m_time, m_time, m_time, m_ignore }
 388   },
 389   {
 390     MSG_SETTIME,
 391     TOK_SETTIME,
 392     0, MAXPARA, MFLG_SLOW, 0, NULL,
 393     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 394     { m_unregistered, m_ignore, ms_settime, mo_settime, m_ignore }
 395   },
 396   {
 397     MSG_RPING,
 398     TOK_RPING,
 399     0, MAXPARA, MFLG_SLOW, 0, NULL,
 400     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 401     { m_unregistered, m_not_oper, ms_rping, mo_rping, m_ignore }
 402   },
 403   {
 404     MSG_RPONG,
 405     TOK_RPONG,
 406     0, MAXPARA, MFLG_SLOW, 0, NULL,
 407     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 408     { m_unregistered, m_ignore, ms_rpong, m_ignore, m_ignore }
 409   },
 410   {
 411     MSG_OPER,
 412     TOK_OPER,
 413     0, MAXPARA, MFLG_SLOW, 0, NULL,
 414     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 415     { m_unregistered, m_oper, ms_oper, mo_oper, m_ignore }
 416   },
 417   {
 418     MSG_CONNECT,
 419     TOK_CONNECT,
 420     0, MAXPARA, MFLG_SLOW, 0, NULL,
 421     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 422     { m_unregistered, m_not_oper, ms_connect, mo_connect, m_ignore }
 423   },
 424   {
 425     MSG_MAP,
 426     TOK_MAP,
 427     0, MAXPARA, MFLG_SLOW, 0, NULL,
 428     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 429     { m_unregistered, m_map, m_ignore, m_map, m_ignore }
 430   },
 431   {
 432     MSG_VERSION,
 433     TOK_VERSION,
 434     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, NULL,
 435     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 436     { m_version, m_version, ms_version, mo_version, m_ignore }
 437   },
 438   {
 439     MSG_STATS,
 440     TOK_STATS,
 441     0, MAXPARA, MFLG_SLOW, 0, NULL,
 442     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 443     { m_unregistered, m_stats, m_stats, m_stats, m_ignore }
 444   },
 445   {
 446     MSG_LINKS,
 447     TOK_LINKS,
 448     0, MAXPARA, MFLG_SLOW, 0, NULL,
 449     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 450     { m_unregistered, m_links, ms_links, m_links, m_ignore }
 451   },
 452   {
 453     MSG_ADMIN,
 454     TOK_ADMIN,
 455     0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0,  NULL,
 456     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 457     { m_admin, m_admin, ms_admin, mo_admin, m_ignore }
 458   },
 459   {
 460     MSG_HELP,
 461     TOK_HELP,
 462     0, MAXPARA, MFLG_SLOW, 0, NULL,
 463     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 464     { m_unregistered, m_help, m_ignore, m_help, m_ignore }
 465   },
 466   {
 467     MSG_INFO,
 468     TOK_INFO,
 469     0, MAXPARA, MFLG_SLOW, 0, NULL,
 470     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 471     { m_unregistered, m_info, ms_info, mo_info, m_ignore }
 472   },
 473   {
 474     MSG_MOTD,
 475     TOK_MOTD,
 476     0, MAXPARA, MFLG_SLOW, 0, NULL,
 477     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 478     { m_unregistered, m_motd, m_motd, m_motd, m_ignore }
 479   },
 480   {
 481     MSG_CLOSE,
 482     TOK_CLOSE,
 483     0, MAXPARA, MFLG_SLOW, 0, NULL,
 484     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 485     { m_unregistered, m_not_oper, m_ignore, mo_close, m_ignore }
 486   },
 487   {
 488     MSG_SILENCE,
 489     TOK_SILENCE,
 490     0, MAXPARA, MFLG_SLOW, 0, NULL,
 491     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 492     { m_unregistered, m_silence, ms_silence, m_silence, m_ignore }
 493   },
 494   {
 495     MSG_GLINE,
 496     TOK_GLINE,
 497     0, MAXPARA,         0, 0, NULL,
 498     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 499     { m_unregistered, m_gline, ms_gline, mo_gline, m_ignore }
 500   },
 501   {
 502     MSG_JUPE,
 503     TOK_JUPE,
 504     0, MAXPARA, MFLG_SLOW, 0, NULL,
 505     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 506     { m_unregistered, m_not_oper, ms_jupe, mo_jupe, m_ignore }
 507   },
 508   {
 509     MSG_OPMODE,
 510     TOK_OPMODE,
 511     0, MAXPARA, MFLG_SLOW, 0, NULL,
 512     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 513     { m_unregistered, m_not_oper, ms_opmode, mo_opmode, m_ignore }
 514   },
 515   {
 516     MSG_CLEARMODE,
 517     TOK_CLEARMODE,
 518     0, MAXPARA, MFLG_SLOW, 0, NULL,
 519     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 520     { m_unregistered, m_not_oper, ms_clearmode, mo_clearmode, m_ignore }
 521   },
 522   {
 523     MSG_UPING,
 524     TOK_UPING,
 525     0, MAXPARA, MFLG_SLOW, 0, NULL,
 526     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 527     { m_unregistered, m_not_oper, ms_uping, mo_uping, m_ignore }
 528   },
 529   {
 530     MSG_END_OF_BURST,
 531     TOK_END_OF_BURST,
 532     0, MAXPARA, MFLG_SLOW, 0, NULL,
 533     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 534     { m_ignore, m_ignore, ms_end_of_burst, m_ignore, m_ignore }
 535   },
 536   {
 537     MSG_END_OF_BURST_ACK,
 538     TOK_END_OF_BURST_ACK,
 539     0, MAXPARA, MFLG_SLOW, 0, NULL,
 540     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 541     { m_ignore, m_ignore, ms_end_of_burst_ack, m_ignore, m_ignore }
 542   },
 543   {
 544     MSG_HASH,
 545     TOK_HASH,
 546     0, MAXPARA, MFLG_SLOW, 0, NULL,
 547     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 548     { m_unregistered, m_hash, m_hash, m_hash, m_ignore }
 549   },
 550   {
 551     MSG_REHASH,
 552     TOK_REHASH,
 553     0, MAXPARA, MFLG_SLOW, 0, NULL,
 554     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 555     { m_unregistered, m_not_oper, m_ignore, mo_rehash, m_ignore }
 556   },
 557   {
 558     MSG_RESTART,
 559     TOK_RESTART,
 560     0, MAXPARA, MFLG_SLOW, 0, NULL,
 561     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 562     { m_unregistered, m_not_oper, m_ignore, mo_restart, m_ignore }
 563   },
 564   {
 565     MSG_DIE,
 566     TOK_DIE,
 567     0, MAXPARA, MFLG_SLOW, 0, NULL,
 568     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 569     { m_unregistered, m_not_oper, m_ignore, mo_die, m_ignore }
 570   },
 571   {
 572     MSG_PROTO,
 573     TOK_PROTO,
 574     0, MAXPARA, MFLG_SLOW, 0, NULL,
 575     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 576     { m_proto, m_proto, m_proto, m_proto, m_ignore }
 577   },
 578   {
 579     MSG_SET,
 580     TOK_SET,
 581     0, MAXPARA, MFLG_SLOW, 0, NULL,
 582     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 583     { m_unregistered, m_not_oper, m_ignore, mo_set, m_ignore }
 584   },
 585   {
 586     MSG_RESET,
 587     TOK_RESET,
 588     0, MAXPARA, MFLG_SLOW, 0, NULL,
 589     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 590     { m_unregistered, m_not_oper, m_ignore, mo_reset, m_ignore }
 591   },
 592   {
 593     MSG_GET,
 594     TOK_GET,
 595     0, MAXPARA, MFLG_SLOW, 0, NULL,
 596     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 597     { m_unregistered, m_not_oper, m_ignore, mo_get, m_ignore }
 598   },
 599   {
 600     MSG_PRIVS,
 601     TOK_PRIVS,
 602     0, MAXPARA, MFLG_SLOW, 0, NULL,
 603     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 604     { m_unregistered, m_not_oper, ms_privs, mo_privs, m_ignore }
 605   },
 606   {
 607     MSG_ACCOUNT,
 608     TOK_ACCOUNT,
 609     0, MAXPARA, MFLG_SLOW, 0, NULL,
 610     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 611     { m_ignore, m_ignore, ms_account, m_ignore, m_ignore }
 612   },
 613   {
 614     MSG_ASLL,
 615     TOK_ASLL,
 616     0, MAXPARA, MFLG_SLOW, 0, NULL,
 617     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 618     { m_ignore, m_not_oper, ms_asll, mo_asll, m_ignore }
 619    },
 620   {
 621     MSG_SETHOST,
 622     TOK_SETHOST,
 623     0, MAXPARA, MFLG_SLOW, 0, NULL,
 624     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 625     { m_unregistered, m_sethost, m_ignore, m_sethost, m_ignore }
 626   },
 627 #if WE_HAVE_A_REAL_CAPABILITY_NOW
 628   {
 629     MSG_CAP,
 630     TOK_CAP,
 631     0, MAXPARA, 0, 0, NULL,
 632     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 633     { m_cap, m_cap, m_ignore, m_cap, m_ignore }
 634   },
 635 #endif
 636
 637   /*
 638    * - ASUKA ---------------------------------------------------------------------
 639    * Add the command for CHECK.
 640    * This was adapted from Lain for use in Asuka.
 641    * Original code by Durzel (durzel@quakenet.org).
 642    *
 643    * qoreQ (qoreQ@quakenet.org) - 08/14/2002
 644    * -----------------------------------------------------------------------------
 645    */
 646   {
 647     MSG_CHECK,
 648     TOK_CHECK,
 649     0, MAXPARA, MFLG_SLOW, 0, NULL,
 650     { m_unregistered, m_not_oper, m_check, m_check, m_ignore }
 651   },
 652
 653   /* This command is an alias for QUIT during the unregistered part of
 654    * of the server.  This is because someone jumping via a broken web
 655    * proxy will send a 'POST' as their first command - which we will
 656    * obviously disconnect them immediately for, stopping people abusing
 657    * open gateways
 658    */
 659   {
 660     MSG_POST,
 661     TOK_POST,
 662     0, MAXPARA, MFLG_SLOW, 0, NULL,
 663     /* UNREG, CLIENT, SERVER, OPER, SERVICE */
 664     { m_quit, m_ignore, m_ignore, m_ignore, m_ignore }
 665   },
 666   { 0 }
 667 };
 668
 669 /** Array of command parameters. */
 670 static char *para[MAXPARA + 2]; /* leave room for prefix and null */
 671
 672
 673 /** Add a message to the lookup trie.
 674  * @param[in,out] mtree_p Trie node to insert under.
 675  * @param[in] msg_p Message to insert.
 676  * @param[in] cmd Text of command to insert.
 677  */
 678 void
 679 add_msg_element(struct MessageTree *mtree_p, struct Message *msg_p, char *cmd)
 680 {
 681   struct MessageTree *ntree_p;
 682
 683   if (*cmd == '\0')
 684   {
 685     mtree_p->msg = msg_p;
 686     return;
 687   }
 688
 689   if ((ntree_p = mtree_p->pointers[*cmd & (MAXPTRLEN-1)]) != NULL)
 690   {
 691     add_msg_element(ntree_p, msg_p, cmd+1);
 692   }
 693   else
 694   {
 695     ntree_p = (struct MessageTree *)MyCalloc(sizeof(struct MessageTree), 1);
 696     mtree_p->pointers[*cmd & (MAXPTRLEN-1)] = ntree_p;
 697     add_msg_element(ntree_p, msg_p, cmd+1);
 698   }
 699 }
 700
 701 /** Remove a message from the lookup trie.
 702  * @param[in,out] mtree_p Trie node to remove command from.
 703  * @param[in] cmd Text of command to remove.
 704  */
 705 struct MessageTree *
 706 del_msg_element(struct MessageTree *mtree_p, char *cmd)
 707 {
 708   int slot = *cmd & (MAXPTRLEN-1);
 709
 710   /* Either remove leaf message or from appropriate child. */
 711   if (*cmd == '\0')
 712     mtree_p->msg = NULL;
 713   else
 714     mtree_p->pointers[slot] = del_msg_element(mtree_p->pointers[slot], cmd + 1);
 715
 716   /* If current message or any child still exists, keep this node. */
 717   if (mtree_p->msg)
 718     return mtree_p;
 719   for (slot = 0; slot < MAXPTRLEN; ++slot)
 720     if (mtree_p->pointers[slot])
 721       return mtree_p;
 722
 723   /* Otherwise, if we're not a root node, free it and return null. */
 724   if (mtree_p != &msg_tree && mtree_p != &tok_tree)
 725     MyFree(mtree_p);
 726   return NULL;
 727 }
 728
 729 /** Initialize the message lookup trie with all known commands. */
 730 void
 731 initmsgtree(void)
 732 {
 733   int i;
 734
 735   memset(&msg_tree, 0, sizeof(msg_tree));
 736   memset(&tok_tree, 0, sizeof(tok_tree));
 737
 738   for (i = 0; msgtab[i].cmd != NULL ; i++)
 739   {
 740     add_msg_element(&msg_tree, &msgtab[i], msgtab[i].cmd);
 741     add_msg_element(&tok_tree, &msgtab[i], msgtab[i].tok);
 742   }
 743 }
 744
 745 /** Look up a command in the message trie.
 746  * @param cmd Text of command to look up.
 747  * @param root Root of message trie.
 748  * @return Pointer to matching message, or NULL if non exists.
 749  */
 750 static struct Message *
 751 msg_tree_parse(char *cmd, struct MessageTree *root)
 752 {
 753   struct MessageTree *mtree;
 754
 755   for (mtree = root; mtree; mtree = mtree->pointers[(*cmd++) & (MAXPTRLEN-1)]) {
 756       if (*cmd == '\0' && mtree->msg)
 757           return mtree->msg;
 758       else if (!IsAlpha(*cmd))
 759           return NULL;
 760   }
 761   return NULL;
 762 }
 763
 764 /** Registers a service mapping to the pseudocommand handler.
 765  * @param[in] map Service mapping to add.
 766  * @return Non-zero on success; zero if a command already used the name.
 767  */
 768 int register_mapping(struct s_map *map)
 769 {
 770   struct Message *msg;
 771
 772   if (msg_tree_parse(map->command, &msg_tree))
 773     return 0;
 774
 775   msg = (struct Message *)MyMalloc(sizeof(struct Message));
 776   msg->cmd = map->command;
 777   msg->tok = map->command;
 778   msg->count = 0;
 779   msg->parameters = 2;
 780   msg->flags = MFLG_EXTRA;
 781   if (!(map->flags & SMAP_FAST))
 782     msg->flags |= MFLG_SLOW;
 783   msg->bytes = 0;
 784   msg->extra = map;
 785
 786   msg->handlers[UNREGISTERED_HANDLER] = m_ignore;
 787   msg->handlers[CLIENT_HANDLER] = m_pseudo;
 788   msg->handlers[SERVER_HANDLER] = m_ignore;
 789   msg->handlers[OPER_HANDLER]   = m_pseudo;
 790   msg->handlers[SERVICE_HANDLER] = m_ignore;
 791
 792   add_msg_element(&msg_tree, msg, msg->cmd);
 793   map->msg = msg;
 794
 795   return 1;
 796 }
 797
 798 /** Removes a service mapping.
 799  * @param[in] map Service mapping to remove.
 800  * @return Non-zero on success; zero if no command used the name.
 801  */
 802 int unregister_mapping(struct s_map *map)
 803 {
 804   if (!msg_tree_parse(map->command, &msg_tree))
 805   {
 806     /* This simply should never happen. */
 807     assert(0);
 808     return 0;
 809   }
 810
 811   del_msg_element(&msg_tree, map->msg->cmd);
 812
 813   map->msg->extra = NULL;
 814   MyFree(map->msg);
 815   map->msg = NULL;
 816
 817   return 1;
 818 }
 819
 820 /** Parse a line of data from a user.
 821  * NOTE: parse_*() should not be called recursively by any other
 822  * functions!
 823  * @param[in] cptr Client that sent the data.
 824  * @param[in] buffer Start of input line.
 825  * @param[in] bufend End of input line.
 826  * @return 0 on success, -1 on parse error, or CPTR_KILLED if message
 827  * handler returns it.
 828  */
 829 int
 830 parse_client(struct Client *cptr, char *buffer, char *bufend)
 831 {
 832   struct Client*  from = cptr;
 833   char*           ch;
 834   char*           s;
 835   int             i;
 836   int             paramcount;
 837   int             noprefix = 0;
 838   struct Message* mptr;
 839   MessageHandler  handler = 0;
 840
 841   Debug((DEBUG_DEBUG, "Client Parsing: %s", buffer));
 842
 843   if (IsDead(cptr))
 844     return 0;
 845
 846   para[0] = cli_name(from);
 847   for (ch = buffer; *ch == ' '; ch++);  /* Eat leading spaces */
 848   if (*ch == ':')               /* Is any client doing this ? */
 849   {
 850     for (++ch; *ch && *ch != ' '; ++ch)
 851       ; /* Ignore sender prefix from client */
 852     while (*ch == ' ')
 853       ch++;                     /* Advance to command */
 854   }
 855   else
 856     noprefix = 1;
 857   if (*ch == '\0')
 858   {
 859     ServerStats->is_empt++;
 860     Debug((DEBUG_NOTICE, "Empty message from host %s:%s",
 861         cli_name(cptr), cli_name(from)));
 862     return (-1);
 863   }
 864
 865   if ((s = strchr(ch, ' ')))
 866     *s++ = '\0';
 867
 868   if ((mptr = msg_tree_parse(ch, &msg_tree)) == NULL)
 869   {
 870     /*
 871      * Note: Give error message *only* to recognized
 872      * persons. It's a nightmare situation to have
 873      * two programs sending "Unknown command"'s or
 874      * equivalent to each other at full blast....
 875      * If it has got to person state, it at least
 876      * seems to be well behaving. Perhaps this message
 877      * should never be generated, though...  --msa
 878      * Hm, when is the buffer empty -- if a command
 879      * code has been found ?? -Armin
 880      */
 881     if (buffer[0] != '\0')
 882     {
 883       if (IsUser(from))
 884         send_reply(from, ERR_UNKNOWNCOMMAND, ch);
 885       Debug((DEBUG_ERROR, "Unknown (%s) from %s",
 886             ch, get_client_name(cptr, HIDE_IP)));
 887     }
 888     ServerStats->is_unco++;
 889     return (-1);
 890   }
 891
 892   paramcount = mptr->parameters;
 893   i = bufend - ((s) ? s : ch);
 894   mptr->bytes += i;
 895   if ((mptr->flags & MFLG_SLOW) || !IsAnOper(cptr)) {
 896     if (IsAnOper(cptr)) {
 897       cli_since(cptr) += 1;
 898     } else {
 899       cli_since(cptr) += (2 + i / 120);
 900     }
 901   }
 902
 903   /*
 904    * Allow only 1 msg per 2 seconds
 905    * (on average) to prevent dumping.
 906    * to keep the response rate up,
 907    * bursts of up to 5 msgs are allowed
 908    * -SRB
 909    */
 910
 911   /*
 912    * Must the following loop really be so devious? On
 913    * surface it splits the message to parameters from
 914    * blank spaces. But, if paramcount has been reached,
 915    * the rest of the message goes into this last parameter
 916    * (about same effect as ":" has...) --msa
 917    */
 918
 919   /* Note initially true: s==NULL || *(s-1) == '\0' !! */
 920
 921   if (mptr->flags & MFLG_EXTRA) {
 922     /* This is a horrid kludge to avoid changing the command handler
 923      * argument list. */
 924     para[1] = (char*)mptr->extra;
 925     i = 1;
 926   } else {
 927     i = 0;
 928   }
 929   if (s)
 930   {
 931     if (paramcount > MAXPARA)
 932       paramcount = MAXPARA;
 933     for (;;)
 934     {
 935       /*
 936        * Never "FRANCE " again!! ;-) Clean
 937        * out *all* blanks.. --msa
 938        */
 939       while (*s == ' ')
 940         *s++ = '\0';
 941
 942       if (*s == '\0')
 943         break;
 944       if (*s == ':')
 945       {
 946         /*
 947          * The rest is single parameter--can
 948          * include blanks also.
 949          */
 950         para[++i] = s + 1;
 951         break;
 952       }
 953       para[++i] = s;
 954       if (i >= paramcount)
 955         break;
 956       for (; *s != ' ' && *s; s++);
 957     }
 958   }
 959   para[++i] = NULL;
 960   ++mptr->count;
 961
 962   handler = mptr->handlers[cli_handler(cptr)];
 963   assert(0 != handler);
 964
 965   if (!feature_bool(FEAT_IDLE_FROM_MSG) && IsUser(cptr) &&
 966       handler != m_ping && handler != m_ignore)
 967     cli_user(from)->last = CurrentTime;
 968
 969   return (*handler) (cptr, from, i, para);
 970 }
 971
 972 /** Parse a line of data from a server.
 973  * @param[in] cptr Client that sent the data.
 974  * @param[in] buffer Start of input line.
 975  * @param[in] bufend End of input line.
 976  * @return 0 on success, -1 on parse error, or CPTR_KILLED if message
 977  * handler returns it.
 978  */
 979 int parse_server(struct Client *cptr, char *buffer, char *bufend)
 980 {
 981   struct Client*  from = cptr;
 982   char*           ch = buffer;
 983   char*           s;
 984   int             len;
 985   int             i;
 986   int             numeric = 0;
 987   int             paramcount;
 988   struct Message* mptr;
 989
 990   Debug((DEBUG_DEBUG, "Server Parsing: %s", buffer));
 991
 992   if (IsDead(cptr))
 993     return 0;
 994
 995   para[0] = cli_name(from);
 996
 997   /*
 998    * A server ALWAYS sends a prefix. When it starts with a ':' it's the
 999    * protocol 9 prefix: a nick or a server name. Otherwise it's a numeric
1000    * nick or server
1001    */
1002   if (*ch == ':')
1003   {
1004     /* Let para[0] point to the name of the sender */
1005     para[0] = ch + 1;
1006     if (!(ch = strchr(ch, ' ')))
1007       return -1;
1008     *ch++ = '\0';
1009
1010     /* And let `from' point to its client structure,
1011        opps.. a server is _also_ a client --Nem */
1012     from = FindClient(para[0]);
1013
1014     /*
1015      * If the client corresponding to the
1016      * prefix is not found. We must ignore it,
1017      * it is simply a lagged message traveling
1018      * upstream a SQUIT that removed the client
1019      * --Run
1020      */
1021     if (from == NULL)
1022     {
1023       Debug((DEBUG_NOTICE, "Unknown prefix (%s)(%s) from (%s)",
1024           para[0], buffer, cli_name(cptr)));
1025       ++ServerStats->is_unpf;
1026       while (*ch == ' ')
1027         ch++;
1028       /*
1029        * However, the only thing that MUST be
1030        * allowed to travel upstream against an
1031        * squit, is an SQUIT itself (the timestamp
1032        * protects us from being used wrong)
1033        */
1034       if (ch[1] == 'Q')
1035       {
1036         para[0] = cli_name(cptr);
1037         from = cptr;
1038       }
1039       else
1040         return 0;
1041     }
1042     else if (cli_from(from) != cptr)
1043     {
1044       ++ServerStats->is_wrdi;
1045       Debug((DEBUG_NOTICE, "Fake direction: Message (%s) coming from (%s)",
1046           buffer, cli_name(cptr)));
1047       return 0;
1048     }
1049   }
1050   else
1051   {
1052     char numeric_prefix[6];
1053     int  i;
1054     for (i = 0; i < 5; ++i)
1055     {
1056       if ('\0' == ch[i] || ' ' == (numeric_prefix[i] = ch[i]))
1057       {
1058         break;
1059       }
1060     }
1061     numeric_prefix[i] = '\0';
1062
1063     /*
1064      * We got a numeric nick as prefix
1065      * 1 or 2 character prefixes are from servers
1066      * 3 or 5 chars are from clients
1067      */
1068     if (0 == i)
1069     {
1070       protocol_violation(cptr,"Missing Prefix");
1071       from = cptr;
1072     }
1073     else if (' ' == ch[1] || ' ' == ch[2])
1074       from = FindNServer(numeric_prefix);
1075     else
1076       from = findNUser(numeric_prefix);
1077
1078     do
1079     {
1080       ++ch;
1081     }
1082     while (*ch != ' ' && *ch);
1083
1084     /*
1085      * If the client corresponding to the
1086      * prefix is not found. We must ignore it,
1087      * it is simply a lagged message traveling
1088      * upstream a SQUIT that removed the client
1089      * --Run
1090      * There turned out to be other reasons that
1091      * a prefix is unknown, needing an upstream
1092      * KILL.  Also, next to an SQUIT we better
1093      * allow a KILL to pass too.
1094      * --Run
1095      */
1096     if (from == NULL)
1097     {
1098       ServerStats->is_unpf++;
1099       while (*ch == ' ')
1100         ch++;
1101       if (*ch == 'N' && (ch[1] == ' ' || ch[1] == 'I'))
1102         /* Only sent a KILL for a nick change */
1103       {
1104         struct Client *server;
1105         /* Kill the unknown numeric prefix upstream if
1106          * it's server still exists: */
1107         if ((server = FindNServer(numeric_prefix)) && cli_from(server) == cptr)
1108           sendcmdto_one(&me, CMD_KILL, cptr, "%s :%s (Unknown numeric nick)",
1109                         numeric_prefix, cli_name(&me));
1110       }
1111       /*
1112        * Things that must be allowed to travel
1113        * upstream against an squit:
1114        */
1115       if (ch[1] == 'Q' || (*ch == 'D' && ch[1] == ' ') ||
1116           (*ch == 'K' && ch[2] == 'L'))
1117         from = cptr;
1118       else
1119         return 0;
1120     }
1121
1122     /* Let para[0] point to the name of the sender */
1123     para[0] = cli_name(from);
1124
1125     if (cli_from(from) != cptr)
1126     {
1127       ServerStats->is_wrdi++;
1128       Debug((DEBUG_NOTICE, "Fake direction: Message (%s) coming from (%s)",
1129           buffer, cli_name(cptr)));
1130       return 0;
1131     }
1132   }
1133
1134   while (*ch == ' ')
1135     ch++;
1136   if (*ch == '\0')
1137   {
1138     ServerStats->is_empt++;
1139     Debug((DEBUG_NOTICE, "Empty message from host %s:%s",
1140         cli_name(cptr), cli_name(from)));
1141     return (-1);
1142   }
1143
1144   /*
1145    * Extract the command code from the packet.   Point s to the end
1146    * of the command code and calculate the length using pointer
1147    * arithmetic.  Note: only need length for numerics and *all*
1148    * numerics must have parameters and thus a space after the command
1149    * code. -avalon
1150    */
1151   s = strchr(ch, ' ');          /* s -> End of the command code */
1152   len = (s) ? (s - ch) : 0;
1153   if (len == 3 && IsDigit(*ch))
1154   {
1155     numeric = (*ch - '0') * 100 + (*(ch + 1) - '0') * 10 + (*(ch + 2) - '0');
1156     paramcount = 2; /* destination, and the rest of it */
1157     ServerStats->is_num++;
1158     mptr = NULL;                /* Init. to avoid stupid compiler warning :/ */
1159   }
1160   else
1161   {
1162     if (s)
1163       *s++ = '\0';
1164
1165     /* Version      Receive         Send
1166      * 2.9          Long            Long
1167      * 2.10.0       Tkn/Long        Long
1168      * 2.10.10      Tkn/Long        Tkn
1169      * 2.10.20      Tkn             Tkn
1170      *
1171      * Clients/unreg servers always receive/
1172      * send long commands   -record
1173      *
1174      * And for the record, this trie parser really does not care. - Dianora
1175      */
1176
1177     mptr = msg_tree_parse(ch, &tok_tree);
1178
1179     if (mptr == NULL)
1180     {
1181       mptr = msg_tree_parse(ch, &msg_tree);
1182     }
1183
1184     if (mptr == NULL)
1185     {
1186       /*
1187        * Note: Give error message *only* to recognized
1188        * persons. It's a nightmare situation to have
1189        * two programs sending "Unknown command"'s or
1190        * equivalent to each other at full blast....
1191        * If it has got to person state, it at least
1192        * seems to be well behaving. Perhaps this message
1193        * should never be generated, though...   --msa
1194        * Hm, when is the buffer empty -- if a command
1195        * code has been found ?? -Armin
1196        */
1197 #ifdef DEBUGMODE
1198       if (buffer[0] != '\0')
1199       {
1200         Debug((DEBUG_ERROR, "Unknown (%s) from %s",
1201               ch, get_client_name(cptr, HIDE_IP)));
1202       }
1203 #endif
1204       ServerStats->is_unco++;
1205       return (-1);
1206     }
1207
1208     paramcount = mptr->parameters;
1209     i = bufend - ((s) ? s : ch);
1210     mptr->bytes += i;
1211   }
1212   /*
1213    * Must the following loop really be so devious? On
1214    * surface it splits the message to parameters from
1215    * blank spaces. But, if paramcount has been reached,
1216    * the rest of the message goes into this last parameter
1217    * (about same effect as ":" has...) --msa
1218    */
1219
1220   /* Note initially true: s==NULL || *(s-1) == '\0' !! */
1221
1222   i = 0;
1223   if (s)
1224   {
1225     if (paramcount > MAXPARA)
1226       paramcount = MAXPARA;
1227     for (;;)
1228     {
1229       /*
1230        * Never "FRANCE " again!! ;-) Clean
1231        * out *all* blanks.. --msa
1232        */
1233       while (*s == ' ')
1234         *s++ = '\0';
1235
1236       if (*s == '\0')
1237         break;
1238       if (*s == ':')
1239       {
1240         /*
1241          * The rest is single parameter--can
1242          * include blanks also.
1243          */
1244         if (numeric)
1245           para[++i] = s; /* preserve the colon to make do_numeric happy */
1246         else
1247           para[++i] = s + 1;
1248         break;
1249       }
1250       para[++i] = s;
1251       if (i >= paramcount)
1252         break;
1253       for (; *s != ' ' && *s; s++);
1254     }
1255   }
1256   para[++i] = NULL;
1257   if (numeric)
1258     return (do_numeric(numeric, (*buffer != ':'), cptr, from, i, para));
1259   mptr->count++;
1260
1261   return (*mptr->handlers[cli_handler(cptr)]) (cptr, from, i, para);
1262 }