ircd/m_map.c

   1 /*
   2  * IRC - Internet Relay Chat, ircd/m_map.c
   3  * Copyright (C) 1990 Jarkko Oikarinen and
   4  *                    University of Oulu, Computing Center
   5  *
   6  * See file AUTHORS in IRC package for additional names of
   7  * the programmers.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 1, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  * $Id: m_map.c,v 1.14 2004/12/11 05:13:47 klmitch Exp $
  24  */
  25
  26 /*
  27  * m_functions execute protocol messages on this server:
  28  *
  29  *    cptr    is always NON-NULL, pointing to a *LOCAL* client
  30  *            structure (with an open socket connected!). This
  31  *            identifies the physical socket where the message
  32  *            originated (or which caused the m_function to be
  33  *            executed--some m_functions may call others...).
  34  *
  35  *    sptr    is the source of the message, defined by the
  36  *            prefix part of the message if present. If not
  37  *            or prefix not found, then sptr==cptr.
  38  *
  39  *            (!IsServer(cptr)) => (cptr == sptr), because
  40  *            prefixes are taken *only* from servers...
  41  *
  42  *            (IsServer(cptr))
  43  *                    (sptr == cptr) => the message didn't
  44  *                    have the prefix.
  45  *
  46  *                    (sptr != cptr && IsServer(sptr) means
  47  *                    the prefix specified servername. (?)
  48  *
  49  *                    (sptr != cptr && !IsServer(sptr) means
  50  *                    that message originated from a remote
  51  *                    user (not local).
  52  *
  53  *            combining
  54  *
  55  *            (!IsServer(sptr)) means that, sptr can safely
  56  *            taken as defining the target structure of the
  57  *            message in this server.
  58  *
  59  *    *Always* true (if 'parse' and others are working correct):
  60  *
  61  *    1)      sptr->from == cptr  (note: cptr->from == cptr)
  62  *
  63  *    2)      MyConnect(sptr) <=> sptr == cptr (e.g. sptr
  64  *            *cannot* be a local connection, unless it's
  65  *            actually cptr!). [MyConnect(x) should probably
  66  *            be defined as (x == x->from) --msa ]
  67  *
  68  *    parc    number of variable parameter strings (if zero,
  69  *            parv is allowed to be NULL)
  70  *
  71  *    parv    a NULL terminated list of parameter pointers,
  72  *
  73  *                    parv[0], sender (prefix string), if not present
  74  *                            this points to an empty string.
  75  *                    parv[1]...parv[parc-1]
  76  *                            pointers to additional parameters
  77  *                    parv[parc] == NULL, *always*
  78  *
  79  *            note:   it is guaranteed that parv[0]..parv[parc-1] are all
  80  *                    non-NULL pointers.
  81  */
  82 #include "config.h"
  83
  84 #include "client.h"
  85 #include "ircd.h"
  86 #include "ircd_defs.h"
  87 #include "ircd_features.h"
  88 #include "ircd_log.h"
  89 #include "ircd_reply.h"
  90 #include "ircd_snprintf.h"
  91 #include "ircd_string.h"
  92 #include "list.h"
  93 #include "match.h"
  94 #include "msg.h"
  95 #include "numeric.h"
  96 #include "s_user.h"
  97 #include "s_serv.h"
  98 #include "send.h"
  99 #include "querycmds.h"
 100
 101 /* #include <assert.h> -- Now using assert in ircd_log.h */
 102 #include <stdio.h>
 103 #include <string.h>
 104
 105 static void dump_map(struct Client *cptr, struct Client *server, char *mask, int prompt_length)
 106 {
 107   const char *chr;
 108   static char prompt[64];
 109   struct DLink *lp;
 110   char *p = prompt + prompt_length;
 111   int cnt = 0;
 112
 113   *p = '\0';
 114   if (prompt_length > 60)
 115     send_reply(cptr, RPL_MAPMORE, prompt, cli_name(server));
 116   else
 117   {
 118     char lag[512];
 119     if (cli_serv(server)->lag>10000)
 120       lag[0]=0;
 121     else if (cli_serv(server)->lag<0)
 122       strcpy(lag,"(0s)");
 123     else
 124       sprintf(lag,"(%is)",cli_serv(server)->lag);
 125     if (IsBurst(server))
 126       chr = "*";
 127     else if (IsBurstAck(server))
 128       chr = "!";
 129     else
 130       chr = "";
 131     send_reply(cptr, RPL_MAP, prompt, chr, cli_name(server),
 132                lag, (server == &me) ? UserStats.local_clients :
 133                                       cli_serv(server)->clients);
 134   }
 135   if (prompt_length > 0)
 136   {
 137     p[-1] = ' ';
 138     if (p[-2] == '`')
 139       p[-2] = ' ';
 140   }
 141   if (prompt_length > 60)
 142     return;
 143   strcpy(p, "|-");
 144   for (lp = cli_serv(server)->down; lp; lp = lp->next)
 145     if (match(mask, cli_name(lp->value.cptr)))
 146       ClrFlag(lp->value.cptr, FLAG_MAP);
 147     else
 148     {
 149       SetFlag(lp->value.cptr, FLAG_MAP);
 150       cnt++;
 151     }
 152   for (lp = cli_serv(server)->down; lp; lp = lp->next)
 153   {
 154     if (!HasFlag(lp->value.cptr, FLAG_MAP))
 155       continue;
 156     if (--cnt == 0)
 157       *p = '`';
 158     dump_map(cptr, lp->value.cptr, mask, prompt_length + 2);
 159   }
 160   if (prompt_length > 0)
 161     p[-1] = '-';
 162 }
 163
 164
 165 /*
 166  * m_map - generic message handler
 167  * -- by Run
 168  *
 169  * parv[0] = sender prefix
 170  * parv[1] = server mask
 171  */
 172 int m_map(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 173 {
 174   if (feature_bool(FEAT_HIS_MAP) && !IsAnOper(sptr))
 175   {
 176     sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :%s %s", sptr,
 177                   "/MAP has been disabled, from CFV-165.  "
 178                   "Visit ", feature_str(FEAT_HIS_URLSERVERS));
 179     return 0;
 180   }
 181   if (parc < 2)
 182     parv[1] = "*";
 183   dump_map(sptr, &me, parv[1], 0);
 184   send_reply(sptr, RPL_MAPEND);
 185
 186   return 0;
 187 }
 188
 189 int mo_map(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 190 {
 191   if (parc < 2)
 192     parv[1] = "*";
 193
 194   dump_map(sptr, &me, parv[1], 0);
 195   send_reply(sptr, RPL_MAPEND);
 196
 197   return 0;
 198 }