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 "sprintf_irc.h"
  32 #include "scache.h"
  33
  34 #define USER_COL       50       /* display | Users: %d at col 50 */
  35
  36 static int m_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  37 static int mo_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  38
  39 struct Message map_msgtab = {
  40         "MAP", 0, 0, 0, MFLG_SLOW,
  41         {mg_unreg, {m_map, 0}, mg_ignore, mg_ignore, mg_ignore, {mo_map, 0}}
  42 };
  43
  44 mapi_clist_av1 map_clist[] = { &map_msgtab, NULL };
  45 DECLARE_MODULE_AV1(map, NULL, NULL, map_clist, NULL, NULL, "$Revision: 3368 $");
  46
  47 static void dump_map(struct Client *client_p, struct Client *root, char *pbuf);
  48
  49 static char buf[BUFSIZE];
  50
  51 /* m_map
  52 **      parv[0] = sender prefix
  53 */
  54 static int
  55 m_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  56 {
  57         if((!IsExemptShide(source_p) && ConfigServerHide.flatten_links) ||
  58            ConfigFileEntry.map_oper_only)
  59         {
  60                 m_not_oper(client_p, source_p, parc, parv);
  61                 return 0;
  62         }
  63
  64         dump_map(client_p, &me, buf);
  65         sendto_one_numeric(client_p, RPL_MAPEND, form_str(RPL_MAPEND));
  66         return 0;
  67 }
  68
  69 /*
  70 ** mo_map
  71 **      parv[0] = sender prefix
  72 */
  73 static int
  74 mo_map(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  75 {
  76         dump_map(client_p, &me, buf);
  77         scache_send_missing(client_p);
  78         sendto_one_numeric(client_p, RPL_MAPEND, form_str(RPL_MAPEND));
  79
  80         return 0;
  81 }
  82
  83 /*
  84 ** dump_map
  85 **   dumps server map, called recursively.
  86 */
  87 static void
  88 dump_map(struct Client *client_p, struct Client *root_p, char *pbuf)
  89 {
  90         int cnt = 0, i = 0, len;
  91         struct Client *server_p;
  92         dlink_node *ptr;
  93         *pbuf = '\0';
  94
  95         strlcat(pbuf, root_p->name, BUFSIZE);
  96         if (has_id(root_p))
  97         {
  98                 strlcat(pbuf, "[", BUFSIZE);
  99                 strlcat(pbuf, root_p->id, BUFSIZE);
 100                 strlcat(pbuf, "]", BUFSIZE);
 101         }
 102         len = strlen(buf);
 103         buf[len] = ' ';
 104
 105         if(len < USER_COL)
 106         {
 107                 for (i = len + 1; i < USER_COL; i++)
 108                 {
 109                         buf[i] = '-';
 110                 }
 111         }
 112
 113         ircsnprintf(buf + USER_COL, BUFSIZE - USER_COL,
 114                  " | Users: %5lu (%4.1f%%)", dlink_list_length(&root_p->serv->users),
 115                  100 * (float) dlink_list_length(&root_p->serv->users) / (float) Count.total);
 116
 117         sendto_one_numeric(client_p, RPL_MAP, form_str(RPL_MAP), buf);
 118
 119         if(root_p->serv->servers.head != NULL)
 120         {
 121                 cnt += dlink_list_length(&root_p->serv->servers);
 122
 123                 if(cnt)
 124                 {
 125                         if(pbuf > buf + 3)
 126                         {
 127                                 pbuf[-2] = ' ';
 128                                 if(pbuf[-3] == '`')
 129                                         pbuf[-3] = ' ';
 130                         }
 131                 }
 132         }
 133         i = 1;
 134         DLINK_FOREACH(ptr, root_p->serv->servers.head)
 135         {
 136                 server_p = ptr->data;
 137                 *pbuf = ' ';
 138                 if(i < cnt)
 139                         *(pbuf + 1) = '|';
 140                 else
 141                         *(pbuf + 1) = '`';
 142
 143                 *(pbuf + 2) = '-';
 144                 *(pbuf + 3) = ' ';
 145                 dump_map(client_p, server_p, pbuf + 4);
 146
 147                 i++;
 148         }
 149 }