modules/m_map.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_map.c: Sends an Undernet compatible map to a user.
   4  *
   5  *  Copyright (C) 2002 by the past and present ircd coders, and others.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  20  *  USA
  21  *
  22  *  $Id: m_map.c 3368 2007-04-03 10:11:06Z nenolod $
  23  */
  24
  25 #include "stdinc.h"
  26 #include "client.h"
  27 #include "modules.h"
  28 #include "numeric.h"
  29 #include "send.h"
  30 #include "s_conf.h"
  31 #include "scache.h"
  32
  33 #define USER_COL       50       /* display | Users: %d at col 50 */
  34
  35 static int m_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  36 static int mo_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  37
  38 struct Message map_msgtab = {
  39         "MAP", 0, 0, 0, MFLG_SLOW,
  40         {mg_unreg, {m_map, 0}, mg_ignore, mg_ignore, mg_ignore, {mo_map, 0}}
  41 };
  42
  43 mapi_clist_av1 map_clist[] = { &map_msgtab, NULL };
  44 DECLARE_MODULE_AV1(map, NULL, NULL, map_clist, NULL, NULL, "$Revision: 3368 $");
  45
  46 static void dump_map(struct Client *client_p, struct Client *root, char *pbuf);
  47
  48 static char buf[BUFSIZE];
  49
  50 /* m_map
  51 */
  52 static int
  53 m_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  54 {
  55         if((!IsExemptShide(source_p) && ConfigServerHide.flatten_links) ||
  56            ConfigFileEntry.map_oper_only)
  57         {
  58                 m_not_oper(client_p, source_p, parc, parv);
  59                 return 0;
  60         }
  61
  62         dump_map(client_p, &me, buf);
  63         sendto_one_numeric(client_p, RPL_MAPEND, form_str(RPL_MAPEND));
  64         return 0;
  65 }
  66
  67 /*
  68 ** mo_map
  69 */
  70 static int
  71 mo_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  72 {
  73         dump_map(client_p, &me, buf);
  74         scache_send_missing(client_p);
  75         sendto_one_numeric(client_p, RPL_MAPEND, form_str(RPL_MAPEND));
  76
  77         return 0;
  78 }
  79
  80 /*
  81 ** dump_map
  82 **   dumps server map, called recursively.
  83 */
  84 static void
  85 dump_map(struct Client *client_p, struct Client *root_p, char *pbuf)
  86 {
  87         int cnt = 0, i = 0, len, frac;
  88         struct Client *server_p;
  89         rb_dlink_node *ptr;
  90         *pbuf = '\0';
  91
  92         rb_strlcat(pbuf, root_p->name, BUFSIZE);
  93         if (has_id(root_p))
  94         {
  95                 rb_strlcat(pbuf, "[", BUFSIZE);
  96                 rb_strlcat(pbuf, root_p->id, BUFSIZE);
  97                 rb_strlcat(pbuf, "]", BUFSIZE);
  98         }
  99         len = strlen(buf);
 100         buf[len] = ' ';
 101
 102         if(len < USER_COL)
 103         {
 104                 for (i = len + 1; i < USER_COL; i++)
 105                 {
 106                         buf[i] = '-';
 107                 }
 108         }
 109
 110         frac = (1000 * rb_dlink_list_length(&root_p->serv->users) + Count.total / 2) / Count.total;
 111         rb_snprintf(buf + USER_COL, BUFSIZE - USER_COL,
 112                  " | Users: %5lu (%2d.%1d%%)", rb_dlink_list_length(&root_p->serv->users),
 113                  frac / 10, frac % 10);
 114
 115         sendto_one_numeric(client_p, RPL_MAP, form_str(RPL_MAP), buf);
 116
 117         if(root_p->serv->servers.head != NULL)
 118         {
 119                 cnt += rb_dlink_list_length(&root_p->serv->servers);
 120
 121                 if(cnt)
 122                 {
 123                         if(pbuf > buf + 3)
 124                         {
 125                                 pbuf[-2] = ' ';
 126                                 if(pbuf[-3] == '`')
 127                                         pbuf[-3] = ' ';
 128                         }
 129                 }
 130         }
 131         i = 1;
 132         RB_DLINK_FOREACH(ptr, root_p->serv->servers.head)
 133         {
 134                 server_p = ptr->data;
 135                 *pbuf = ' ';
 136                 if(i < cnt)
 137                         *(pbuf + 1) = '|';
 138                 else
 139                         *(pbuf + 1) = '`';
 140
 141                 *(pbuf + 2) = '-';
 142                 *(pbuf + 3) = ' ';
 143                 dump_map(client_p, server_p, pbuf + 4);
 144
 145                 i++;
 146         }
 147 }