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 254 2005-09-21 23:35:12Z 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 "sprintf_irc.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: 254 $");
  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 **      parv[0] = sender prefix
  52 */
  53 static int
  54 m_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  55 {
  56         if((!IsExemptShide(source_p) && ConfigServerHide.flatten_links) ||
  57            ConfigFileEntry.map_oper_only)
  58         {
  59                 m_not_oper(client_p, source_p, parc, parv);
  60                 return 0;
  61         }
  62
  63         dump_map(client_p, &me, buf);
  64         sendto_one(client_p, form_str(RPL_MAPEND), me.name, client_p->name);
  65         return 0;
  66 }
  67
  68 /*
  69 ** mo_map
  70 **      parv[0] = sender prefix
  71 */
  72 static int
  73 mo_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  74 {
  75         dump_map(client_p, &me, buf);
  76         sendto_one(client_p, form_str(RPL_MAPEND), me.name, client_p->name);
  77
  78         return 0;
  79 }
  80
  81 /*
  82 ** dump_map
  83 **   dumps server map, called recursively.
  84 */
  85 static void
  86 dump_map(struct Client *client_p, struct Client *root_p, char *pbuf)
  87 {
  88         int cnt = 0, i = 0, len;
  89         struct Client *server_p;
  90         dlink_node *ptr;
  91         *pbuf = '\0';
  92
  93         strlcat(pbuf, root_p->name, BUFSIZE);
  94         if (has_id(root_p))
  95         {
  96                 strlcat(pbuf, "[", BUFSIZE);
  97                 strlcat(pbuf, root_p->id, BUFSIZE);
  98                 strlcat(pbuf, "]", BUFSIZE);
  99         }
 100         len = strlen(buf);
 101         buf[len] = ' ';
 102
 103         if(len < USER_COL)
 104         {
 105                 for (i = len + 1; i < USER_COL; i++)
 106                 {
 107                         buf[i] = '-';
 108                 }
 109         }
 110
 111         ircsnprintf(buf + USER_COL, BUFSIZE - USER_COL,
 112                  " | Users: %5lu (%4.1f%%)", dlink_list_length(&root_p->serv->users),
 113                  100 * (float) dlink_list_length(&root_p->serv->users) / (float) Count.total);
 114
 115         sendto_one(client_p, form_str(RPL_MAP), me.name, client_p->name, buf);
 116
 117         if(root_p->serv->servers.head != NULL)
 118         {
 119                 cnt += 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         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 }