ircd/s_stats.c

   1 /*
   2  * IRC - Internet Relay Chat, ircd/s_stats.c
   3  * Copyright (C) 2000 Joseph Bongaarts
   4  *
   5  * See file AUTHORS in IRC package for additional names of
   6  * the programmers.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 1, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22 #include "config.h"
  23
  24 #include "class.h"
  25 #include "client.h"
  26 #include "gline.h"
  27 #include "hash.h"
  28 #include "ircd.h"
  29 #include "ircd_chattr.h"
  30 #include "ircd_events.h"
  31 #include "ircd_features.h"
  32 #include "ircd_crypt.h"
  33 #include "ircd_log.h"
  34 #include "ircd_reply.h"
  35 #include "ircd_string.h"
  36 #include "listener.h"
  37 #include "list.h"
  38 #include "match.h"
  39 #include "motd.h"
  40 #include "msg.h"
  41 #include "msgq.h"
  42 #include "numeric.h"
  43 #include "numnicks.h"
  44 #include "querycmds.h"
  45 #include "res.h"
  46 #include "s_bsd.h"
  47 #include "s_conf.h"
  48 #include "s_debug.h"
  49 #include "s_misc.h"
  50 #include "s_serv.h"
  51 #include "s_stats.h"
  52 #include "s_user.h"
  53 #include "send.h"
  54 #include "struct.h"
  55 #include "userload.h"
  56
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <sys/time.h>
  61
  62 /** @file
  63  * @brief Report configuration lines and other statistics from this
  64  * server.
  65  * @version $Id: s_stats.c,v 1.44.2.1 2005/10/12 01:13:48 entrope Exp $
  66  *
  67  * Note: The info is reported in the order the server uses
  68  *       it--not reversed as in ircd.conf!
  69  */
  70
  71 /* The statsinfo array should only be used in this file, but just TRY
  72  * telling the compiler that you want to forward declare a static
  73  * array without specifying a length, and see how it responds.  So we
  74  * forward declare it "extern".
  75  */
  76 extern struct StatDesc statsinfo[];
  77
  78 /** Report items from #GlobalConfList.
  79  * Uses sd->sd_funcdata as a filter for ConfItem::status.
  80  * @param[in] sptr Client requesting statistics.
  81  * @param[in] sd Stats descriptor for request.
  82  * @param[in] param Extra parameter from user (ignored).
  83  */
  84 static void
  85 stats_configured_links(struct Client *sptr, const struct StatDesc* sd,
  86                        char* param)
  87 {
  88   static char null[] = "<NULL>";
  89   struct ConfItem *tmp;
  90   unsigned short int port;
  91   int maximum;
  92   char *host, *pass, *name, *username, *hub_limit;
  93
  94   for (tmp = GlobalConfList; tmp; tmp = tmp->next)
  95   {
  96     if ((tmp->status & sd->sd_funcdata))
  97     {
  98       host = BadPtr(tmp->host) ? null : tmp->host;
  99       pass = BadPtr(tmp->passwd) ? null : tmp->passwd;
 100       name = BadPtr(tmp->name) ? null : tmp->name;
 101       username = BadPtr(tmp->username) ? null : tmp->username;
 102       hub_limit = BadPtr(tmp->hub_limit) ? null : tmp->hub_limit;
 103       maximum = tmp->maximum;
 104       port = tmp->address.port;
 105
 106       if (tmp->status & CONF_UWORLD)
 107         send_reply(sptr, RPL_STATSULINE, host);
 108       else if (tmp->status & CONF_SERVER)
 109         send_reply(sptr, RPL_STATSCLINE, name, port, maximum, hub_limit, get_conf_class(tmp));
 110       else if (tmp->status & CONF_CLIENT)
 111         send_reply(sptr, RPL_STATSILINE,
 112                    (tmp->host ? tmp->host : "*"), maximum,
 113                    (name[0] == ':' ? "0" : ""), (tmp->name ? tmp->name : "*"),
 114                    port, get_conf_class(tmp));
 115       else if (tmp->status & CONF_OPERATOR)
 116         send_reply(sptr, RPL_STATSOLINE,
 117                    ((FlagHas(&tmp->privs_dirty, PRIV_PROPAGATE)
 118                      && FlagHas(&tmp->privs, PRIV_PROPAGATE))
 119                     || (FlagHas(&tmp->conn_class->privs_dirty, PRIV_PROPAGATE)
 120                         && FlagHas(&tmp->conn_class->privs, PRIV_PROPAGATE)))
 121                    ? 'O' : 'o', username, host, name, get_conf_class(tmp));
 122     }
 123   }
 124 }
 125
 126 /** Report connection rules from conf_get_crule_list().
 127  * Uses sd->sd_funcdata as a filter for CRuleConf::type.
 128  * @param[in] to Client requesting statistics.
 129  * @param[in] sd Stats descriptor for request.
 130  * @param[in] param Extra parameter from user (ignored).
 131  */
 132 static void
 133 stats_crule_list(struct Client* to, const struct StatDesc *sd,
 134                  char *param)
 135 {
 136   const struct CRuleConf* p = conf_get_crule_list();
 137
 138   for ( ; p; p = p->next)
 139   {
 140     if (p->type & sd->sd_funcdata)
 141       send_reply(to, RPL_STATSDLINE, (p->type & CRULE_ALL ? 'D' : 'd'), p->hostmask, p->rule);
 142   }
 143 }
 144
 145 /** Report active event engine name.
 146  * @param[in] to Client requesting statistics.
 147  * @param[in] sd Stats descriptor for request (ignored).
 148  * @param[in] param Extra parameter from user (ignored).
 149  */
 150 static void
 151 stats_engine(struct Client *to, const struct StatDesc *sd, char *param)
 152 {
 153   send_reply(to, RPL_STATSENGINE, engine_name());
 154 }
 155
 156 /** Report client access lists.
 157  * @param[in] to Client requesting statistics.
 158  * @param[in] sd Stats descriptor for request.
 159  * @param[in] param Filter for hostname or IP (NULL to show all).
 160  */
 161 static void
 162 stats_access(struct Client *to, const struct StatDesc *sd, char *param)
 163 {
 164   struct ConfItem *aconf;
 165   int wilds = 0;
 166   int count = 1000;
 167
 168   if (!param)
 169   {
 170     stats_configured_links(to, sd, param);
 171     return;
 172   }
 173
 174   wilds = string_has_wildcards(param);
 175
 176   for (aconf = GlobalConfList; aconf; aconf = aconf->next)
 177   {
 178     if (aconf->status != CONF_CLIENT)
 179       continue;
 180     if (wilds ? ((aconf->host && !mmatch(aconf->host, param))
 181                  || (aconf->name && !mmatch(aconf->name, param)))
 182         : ((aconf->host && !match(param, aconf->host))
 183            || (aconf->name && !match(param, aconf->name))))
 184     {
 185       send_reply(to, RPL_STATSILINE,
 186                  (aconf->host ? aconf->host : "*"), aconf->maximum,
 187                  (aconf->name && aconf->name[0] == ':' ? "0":""),
 188                  aconf->name ? aconf->name : "*",
 189                  aconf->address.port, get_conf_class(aconf));
 190       if (--count == 0)
 191         break;
 192     }
 193   }
 194 }
 195
 196
 197 /** Report DenyConf entries.
 198  * @param[in] to Client requesting list.
 199  */
 200 static void
 201 report_deny_list(struct Client* to)
 202 {
 203   const struct DenyConf* p = conf_get_deny_list();
 204   for ( ; p; p = p->next)
 205     send_reply(to, RPL_STATSKLINE, p->bits > 0 ? 'k' : 'K',
 206                p->usermask ? p->usermask : "*",
 207                p->hostmask ? p->hostmask : "*",
 208                p->message ? p->message : "(none)",
 209                p->realmask ? p->realmask : "*");
 210 }
 211
 212 /** Report K/k-lines to a user.
 213  * @param[in] sptr Client requesting statistics.
 214  * @param[in] sd Stats descriptor for request (ignored).
 215  * @param[in] mask Filter for hostmasks to show.
 216  */
 217 static void
 218 stats_klines(struct Client *sptr, const struct StatDesc *sd, char *mask)
 219 {
 220   int wilds = 0;
 221   int count = 3;
 222   int limit_query = 0;
 223   char *user  = 0;
 224   char *host;
 225   const struct DenyConf* conf;
 226
 227   if (!IsAnOper(sptr))
 228     limit_query = 1;
 229
 230   if (!mask)
 231   {
 232     if (limit_query)
 233       need_more_params(sptr, "STATS K");
 234     else
 235       report_deny_list(sptr);
 236     return;
 237   }
 238
 239   if (!limit_query)
 240   {
 241     wilds = string_has_wildcards(mask);
 242     count = 1000;
 243   }
 244   if ((host = strchr(mask, '@')))
 245   {
 246     user = mask;
 247     *host++ = '\0';
 248   }
 249   else
 250     host = mask;
 251
 252   for (conf = conf_get_deny_list(); conf; conf = conf->next)
 253   {
 254     /* Skip this block if the user is searching for a user-matching
 255      * mask but the current Kill doesn't have a usermask, or if user
 256      * is searching for a host-matching mask but the Kill has no
 257      * hostmask, or if the user mask is specified and doesn't match,
 258      * or if the host mask is specified and doesn't match.
 259      */
 260     if ((user && !conf->usermask)
 261         || (host && !conf->hostmask)
 262         || (user && conf->usermask
 263             && (wilds
 264                 ? mmatch(user, conf->usermask)
 265                 : match(conf->usermask, user)))
 266         || (host && conf->hostmask
 267             && (wilds
 268                 ? mmatch(host, conf->hostmask)
 269                 : match(conf->hostmask, host))))
 270       continue;
 271     send_reply(sptr, RPL_STATSKLINE, conf->bits > 0 ? 'k' : 'K',
 272                conf->usermask ? conf->usermask : "*",
 273                conf->hostmask ? conf->hostmask : "*",
 274                conf->message ? conf->message : "(none)",
 275                conf->realmask ? conf->realmask : "*");
 276     if (--count == 0)
 277       return;
 278   }
 279 }
 280
 281 /** Report on servers and/or clients connected to the network.
 282  * @param[in] sptr Client requesting statistics.
 283  * @param[in] sd Stats descriptor for request (ignored).
 284  * @param[in] name Filter for client names to show.
 285  */
 286 static void
 287 stats_links(struct Client* sptr, const struct StatDesc* sd, char* name)
 288 {
 289   struct Client *acptr;
 290   int i;
 291   int wilds = 0;
 292
 293   if (name)
 294     wilds = string_has_wildcards(name);
 295
 296   /*
 297    * Send info about connections which match, or all if the
 298    * mask matches me.name.  Only restrictions are on those who
 299    * are invisible not being visible to 'foreigners' who use
 300    * a wild card based search to list it.
 301    */
 302   send_reply(sptr, SND_EXPLICIT | RPL_STATSLINKINFO, "Connection SendQ "
 303              "SendM SendKBytes RcveM RcveKBytes :Open since");
 304     for (i = 0; i <= HighestFd; i++)
 305     {
 306       if (!(acptr = LocalClientArray[i]))
 307         continue;
 308       /* Don't return clients when this is a request for `all' */
 309       if (!name && IsUser(acptr))
 310         continue;
 311       /* Don't show invisible people to non opers unless they know the nick */
 312       if (IsInvisible(acptr) && (!name || wilds) && !IsAnOper(acptr) &&
 313           (acptr != sptr))
 314         continue;
 315       /* Only show the ones that match the given mask - if any */
 316       if (name && wilds && match(name, cli_name(acptr)))
 317         continue;
 318       /* Skip all that do not match the specific query */
 319       if (!(!name || wilds) && 0 != ircd_strcmp(name, cli_name(acptr)))
 320         continue;
 321       send_reply(sptr, SND_EXPLICIT | RPL_STATSLINKINFO,
 322                  "%s %u %u %Lu %u %Lu :%Tu",
 323                  (*(cli_name(acptr))) ? cli_name(acptr) : "<unregistered>",
 324                  (int)MsgQLength(&(cli_sendQ(acptr))), (int)cli_sendM(acptr),
 325                  (cli_sendB(acptr) >> 10), (int)cli_receiveM(acptr),
 326                  (cli_receiveB(acptr) >> 10), CurrentTime - cli_firsttime(acptr));
 327     }
 328 }
 329
 330 /** Report on loaded modules.
 331  * @param[in] to Client requesting statistics.
 332  * @param[in] sd Stats descriptor for request (ignored).
 333  * @param[in] param Extra parameter from user (ignored).
 334  */
 335 static void
 336 stats_modules(struct Client* to, const struct StatDesc* sd, char* param)
 337 {
 338 crypt_mechs_t* mechs;
 339
 340   send_reply(to, SND_EXPLICIT | RPL_STATSLLINE,
 341    "Module  Description      Entry Point");
 342
 343  /* atm the only "modules" we have are the crypto mechanisms,
 344     eventualy they'll be part of a global dl module list, for now
 345     i'll just output data about them -- hikari */
 346
 347  if(crypt_mechs_root == NULL)
 348   return;
 349
 350  mechs = crypt_mechs_root->next;
 351
 352  for(;;)
 353  {
 354   if(mechs == NULL)
 355    return;
 356
 357   send_reply(to, SND_EXPLICIT | RPL_STATSLLINE,
 358    "%s  %s     0x%X",
 359    mechs->mech->shortname, mechs->mech->description,
 360    mechs->mech->crypt_function);
 361
 362   mechs = mechs->next;
 363  }
 364
 365 }
 366
 367 /** Report how many times each command has been used.
 368  * @param[in] to Client requesting statistics.
 369  * @param[in] sd Stats descriptor for request (ignored).
 370  * @param[in] param Extra parameter from user (ignored).
 371  */
 372 static void
 373 stats_commands(struct Client* to, const struct StatDesc* sd, char* param)
 374 {
 375   struct Message *mptr;
 376
 377   for (mptr = msgtab; mptr->cmd; mptr++)
 378     if (mptr->count)
 379       send_reply(to, RPL_STATSCOMMANDS, mptr->cmd, mptr->count, mptr->bytes);
 380 }
 381
 382 /** List channel quarantines.
 383  * @param[in] to Client requesting statistics.
 384  * @param[in] sd Stats descriptor for request (ignored).
 385  * @param[in] param Filter for quarantined channel names.
 386  */
 387 static void
 388 stats_quarantine(struct Client* to, const struct StatDesc* sd, char* param)
 389 {
 390   struct qline *qline;
 391
 392   for (qline = GlobalQuarantineList; qline; qline = qline->next)
 393   {
 394     if (param && match(param, qline->chname)) /* narrow search */
 395       continue;
 396     send_reply(to, RPL_STATSQLINE, qline->chname, qline->reason);
 397   }
 398 }
 399
 400 /** List service pseudo-command mappings.
 401  * @param[in] to Client requesting statistics.
 402  * @param[in] sd Stats descriptor for request (ignored).
 403  * @param[in] param Extra parameter from user (ignored).
 404  */
 405 static void
 406 stats_mapping(struct Client *to, const struct StatDesc* sd, char* param)
 407 {
 408   struct s_map *map;
 409
 410   send_reply(to, RPL_STATSRLINE, "Command", "Name", "Prepend", "Target");
 411   for (map = GlobalServiceMapList; map; map = map->next) {
 412     struct nick_host *nh;
 413     for (nh = map->services; nh; nh = nh->next) {
 414       send_reply(to, RPL_STATSRLINE, map->command, map->name,
 415                  (map->prepend ? map->prepend : "*"), nh->nick);
 416     }
 417   }
 418 }
 419
 420 /** Report server uptime and maximum connection/client counts.
 421  * @param[in] to Client requesting statistics.
 422  * @param[in] sd Stats descriptor for request (ignored).
 423  * @param[in] param Extra parameter from user (ignored).
 424  */
 425 static void
 426 stats_uptime(struct Client* to, const struct StatDesc* sd, char* param)
 427 {
 428   time_t nowr;
 429
 430   nowr = CurrentTime - cli_since(&me);
 431   send_reply(to, RPL_STATSUPTIME, nowr / 86400, (nowr / 3600) % 24,
 432              (nowr / 60) % 60, nowr % 60);
 433   send_reply(to, RPL_STATSCONN, max_connection_count, max_client_count);
 434 }
 435
 436 /** Verbosely report on servers connected to the network.
 437  * If sd->sd_funcdata != 0, then display in a more human-friendly format.
 438  * @param[in] sptr Client requesting statistics.
 439  * @param[in] sd Stats descriptor for request.
 440  * @param[in] param Filter for server names to display.
 441  */
 442 static void
 443 stats_servers_verbose(struct Client* sptr, const struct StatDesc* sd,
 444                       char* param)
 445 {
 446   struct Client *acptr;
 447   const char *fmt;
 448
 449   /*
 450    * lowercase 'v' is for human-readable,
 451    * uppercase 'V' is for machine-readable
 452    */
 453   if (sd->sd_funcdata) {
 454     send_reply(sptr, SND_EXPLICIT | RPL_STATSVERBOSE,
 455                "%-20s %-20s Flags Hops Numeric   Lag  RTT   Up Down "
 456                "Clients/Max Proto %-10s :Info", "Servername", "Uplink",
 457                "LinkTS");
 458     fmt = "%-20s %-20s %c%c%c%c  %4i %s %-4i %5i %4i %4i %4i %5i %5i P%-2i   %Tu :%s";
 459   } else {
 460     fmt = "%s %s %c%c%c%c %i %s %i %i %i %i %i %i %i P%i %Tu :%s";
 461   }
 462
 463   for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr))
 464   {
 465     if (!IsServer(acptr) && !IsMe(acptr))
 466       continue;
 467     /* narrow search */
 468     if (param && match(param, cli_name(acptr)))
 469       continue;
 470     send_reply(sptr, SND_EXPLICIT | RPL_STATSVERBOSE, fmt,
 471                cli_name(acptr),
 472                cli_name(cli_serv(acptr)->up),
 473                IsBurst(acptr) ? 'B' : '-',
 474                IsBurstAck(acptr) ? 'A' : '-',
 475                IsHub(acptr) ? 'H' : '-',
 476                IsService(acptr) ? 'S' : '-',
 477                cli_hopcount(acptr),
 478                NumServ(acptr),
 479                base64toint(cli_yxx(acptr)),
 480                cli_serv(acptr)->lag,
 481                cli_serv(acptr)->asll_rtt,
 482                cli_serv(acptr)->asll_to,
 483                cli_serv(acptr)->asll_from,
 484                (acptr == &me ? UserStats.local_clients : cli_serv(acptr)->clients),
 485                cli_serv(acptr)->nn_mask,
 486                cli_serv(acptr)->prot,
 487                cli_serv(acptr)->timestamp,
 488                cli_info(acptr));
 489   }
 490 }
 491
 492 /** Display objects allocated (and total memory used by them) for
 493  * several types of structures.
 494  * @param[in] to Client requesting statistics.
 495  * @param[in] sd Stats descriptor for request (ignored).
 496  * @param[in] param Extra parameter from user (ignored).
 497  */
 498 static void
 499 stats_meminfo(struct Client* to, const struct StatDesc* sd, char* param)
 500 {
 501   extern void bans_send_meminfo(struct Client *cptr);
 502
 503   class_send_meminfo(to);
 504   bans_send_meminfo(to);
 505   send_listinfo(to, 0);
 506 }
 507
 508 /** Send a list of available statistics.
 509  * @param[in] to Client requesting statistics.
 510  * @param[in] sd Stats descriptor for request.
 511  * @param[in] param Extra parameter from user (ignored).
 512  */
 513 static void
 514 stats_help(struct Client* to, const struct StatDesc* sd, char* param)
 515 {
 516   struct StatDesc *asd;
 517
 518   /* only if it's my user */
 519   if (MyUser(to))
 520     for (asd = statsinfo; asd->sd_name; asd++)
 521       if (asd != sd) /* don't send the help for us */
 522         sendcmdto_one(&me, CMD_NOTICE, to, "%C :%c (%s) - %s", to, asd->sd_c,
 523                       asd->sd_name, asd->sd_desc);
 524 }
 525
 526 /** Contains information about all statistics. */
 527 struct StatDesc statsinfo[] = {
 528   { 'a', "nameservers", STAT_FLAG_OPERFEAT|STAT_FLAG_LOCONLY, FEAT_HIS_STATS_a,
 529     report_dns_servers, 0,
 530     "DNS servers." },
 531   { 'c', "connect", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_c,
 532     stats_configured_links, CONF_SERVER,
 533     "Remote server connection lines." },
 534   { 'd', "maskrules", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_d,
 535     stats_crule_list, CRULE_MASK,
 536     "Dynamic routing configuration." },
 537   { 'D', "crules", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_d,
 538     stats_crule_list, CRULE_ALL,
 539     "Dynamic routing configuration." },
 540   { 'e', "engine", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_e,
 541     stats_engine, 0,
 542     "Report server event loop engine." },
 543   { 'f', "features", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_f,
 544     feature_report, 0,
 545     "Feature settings." },
 546   { 'g', "glines", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_g,
 547     gline_stats, 0,
 548     "Global bans (G-lines)." },
 549   { 'i', "access", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM), FEAT_HIS_STATS_i,
 550     stats_access, CONF_CLIENT,
 551     "Connection authorization lines." },
 552   { 'j', "histogram", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_j,
 553     msgq_histogram, 0,
 554     "Message length histogram." },
 555   { 'J', "jupes", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_J,
 556     stats_nickjupes, 0,
 557     "Nickname jupes." },
 558   { 'k', "klines", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM), FEAT_HIS_STATS_k,
 559     stats_klines, 0,
 560     "Local bans (K-Lines)." },
 561   { 'l', "links", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM | STAT_FLAG_CASESENS),
 562     FEAT_HIS_STATS_l,
 563     stats_links, 0,
 564     "Current connections information." },
 565   { 'L', "modules", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS),
 566     FEAT_HIS_STATS_L,
 567     stats_modules, 0,
 568     "Dynamically loaded modules." },
 569   { 'm', "commands", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_m,
 570     stats_commands, 0,
 571     "Message usage information." },
 572   { 'o', "operators", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_o,
 573     stats_configured_links, CONF_OPERATOR,
 574     "Operator information." },
 575   { 'p', "ports", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM), FEAT_HIS_STATS_p,
 576     show_ports, 0,
 577     "Listening ports." },
 578   { 'q', "quarantines", (STAT_FLAG_OPERONLY | STAT_FLAG_VARPARAM), FEAT_HIS_STATS_q,
 579     stats_quarantine, 0,
 580     "Quarantined channels list." },
 581   { 'R', "mappings", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_R,
 582     stats_mapping, 0,
 583     "Service mappings." },
 584 #ifdef DEBUGMODE
 585   { 'r', "usage", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_r,
 586     send_usage, 0,
 587     "System resource usage (Debug only)." },
 588 #endif
 589   { 'T', "motds", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_T,
 590     motd_report, 0,
 591     "Configured Message Of The Day files." },
 592   { 't', "locals", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_t,
 593     tstats, 0,
 594     "Local connection statistics (Total SND/RCV, etc)." },
 595   { 'U', "uworld", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_U,
 596     stats_configured_links, CONF_UWORLD,
 597     "Service server information." },
 598   { 'u', "uptime", (STAT_FLAG_OPERFEAT | STAT_FLAG_CASESENS), FEAT_HIS_STATS_u,
 599     stats_uptime, 0,
 600     "Current uptime & highest connection count." },
 601   { 'v', "vservers", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM | STAT_FLAG_CASESENS), FEAT_HIS_STATS_v,
 602     stats_servers_verbose, 1,
 603     "Verbose server information." },
 604   { 'V', "vserversmach", (STAT_FLAG_OPERFEAT | STAT_FLAG_VARPARAM | STAT_FLAG_CASESENS), FEAT_HIS_STATS_v,
 605     stats_servers_verbose, 0,
 606     "Verbose server information." },
 607   { 'w', "userload", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_w,
 608     calc_load, 0,
 609     "Userload statistics." },
 610   { 'x', "memusage", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_x,
 611     stats_meminfo, 0,
 612     "List usage information." },
 613   { 'y', "classes", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_y,
 614     report_classes, 0,
 615     "Connection classes." },
 616   { 'z', "memory", STAT_FLAG_OPERFEAT, FEAT_HIS_STATS_z,
 617     count_memory, 0,
 618     "Memory/Structure allocation information." },
 619   { '*', "help", STAT_FLAG_CASESENS, FEAT_LAST_F,
 620     stats_help, 0,
 621     "Send help for stats." },
 622   { '\0', 0, FEAT_LAST_F, 0, 0, 0 }
 623 };
 624
 625 /** Maps from characters to statistics descriptors.
 626  * Statistics descriptors with no single-character alias are not included.
 627  */
 628 static struct StatDesc *statsmap[256];
 629 /** Number of statistics descriptors. */
 630 static int statscount;
 631
 632 /** Compare two StatDesc structures by long name (StatDesc::sd_name).
 633  * @param[in] a_ Pointer to a StatDesc.
 634  * @param[in] b_ Pointer to a StatDesc.
 635  * @return Less than, equal to, or greater than zero if \a a_ is
 636  * lexicographically less than, equal to, or greater than \a b_.
 637  */
 638 static int
 639 stats_cmp(const void *a_, const void *b_)
 640 {
 641   const struct StatDesc *a = a_;
 642   const struct StatDesc *b = b_;
 643   return ircd_strcmp(a->sd_name, b->sd_name);
 644 }
 645
 646 /** Compare a StatDesc's name against a string.
 647  * @param[in] key Pointer to a null-terminated string.
 648  * @param[in] sd_ Pointer to a StatDesc.
 649  * @return Less than, equal to, or greater than zero if \a key is
 650  * lexicographically less than, equal to, or greater than \a
 651  * sd_->sd_name.
 652  */
 653 static int
 654 stats_search(const void *key, const void *sd_)
 655 {
 656   const struct StatDesc *sd = sd_;
 657   return ircd_strcmp(key, sd->sd_name);
 658 }
 659
 660 /** Look up a stats handler.  If name_or_char is just one character
 661  * long, use that as a character index; otherwise, look it up by name
 662  * in #statsinfo.
 663  * @param[in] name_or_char Null-terminated string to look up.
 664  * @return The statistics descriptor for \a name_or_char (NULL if none).
 665  */
 666 const struct StatDesc *
 667 stats_find(const char *name_or_char)
 668 {
 669   if (!name_or_char[1])
 670     return statsmap[name_or_char[0] - CHAR_MIN];
 671   else
 672     return bsearch(name_or_char, statsinfo, statscount, sizeof(statsinfo[0]), stats_search);
 673 }
 674
 675 /** Build statsmap from the statsinfo array. */
 676 void
 677 stats_init(void)
 678 {
 679   struct StatDesc *sd;
 680
 681   /* Count number of stats entries and sort them. */
 682   for (statscount = 0, sd = statsinfo; sd->sd_name; sd++, statscount++) {}
 683   qsort(statsinfo, statscount, sizeof(statsinfo[0]), stats_cmp);
 684
 685   /* Build the mapping */
 686   for (sd = statsinfo; sd->sd_name; sd++)
 687   {
 688     if (!sd->sd_c)
 689       continue;
 690     else if (sd->sd_flags & STAT_FLAG_CASESENS)
 691       /* case sensitive character... */
 692       statsmap[sd->sd_c - CHAR_MIN] = sd;
 693     else
 694     {
 695       /* case insensitive--make sure to put in two entries */
 696       statsmap[ToLower(sd->sd_c) - CHAR_MIN] = sd;
 697       statsmap[ToUpper(sd->sd_c) - CHAR_MIN] = sd;
 698     }
 699   }
 700 }