modules/m_whowas.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_whois.c: Shows who a user was.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   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 2 of the License, or
  12  *  (at your option) 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  *
  24  *  $Id: m_whowas.c 1717 2006-07-04 14:41:11Z jilles $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "whowas.h"
  29 #include "client.h"
  30 #include "common.h"
  31 #include "hash.h"
  32 #include "match.h"
  33 #include "ircd.h"
  34 #include "ircd_defs.h"
  35 #include "numeric.h"
  36 #include "s_serv.h"
  37 #include "s_user.h"
  38 #include "send.h"
  39 #include "s_conf.h"
  40 #include "msg.h"
  41 #include "parse.h"
  42 #include "modules.h"
  43
  44 static int m_whowas(struct Client *, struct Client *, int, const char **);
  45
  46 struct Message whowas_msgtab = {
  47         "WHOWAS", 0, 0, 0, MFLG_SLOW,
  48         {mg_unreg, {m_whowas, 2}, {m_whowas, 4}, mg_ignore, mg_ignore, {m_whowas, 2}}
  49 };
  50
  51 mapi_clist_av1 whowas_clist[] = { &whowas_msgtab, NULL };
  52 DECLARE_MODULE_AV1(whowas, NULL, NULL, whowas_clist, NULL, NULL, "$Revision: 1717 $");
  53
  54 /*
  55 ** m_whowas
  56 **      parv[1] = nickname queried
  57 */
  58 static int
  59 m_whowas(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  60 {
  61         struct Whowas *temp;
  62         int cur = 0;
  63         int max = -1, found = 0;
  64         char *p;
  65         const char *nick;
  66         char tbuf[26];
  67         long sendq_limit;
  68
  69         static time_t last_used = 0L;
  70
  71         if(MyClient(source_p) && !IsOper(source_p))
  72         {
  73                 if(last_used + (parc > 3 ? ConfigFileEntry.pace_wait :
  74                                                 ConfigFileEntry.pace_wait_simple
  75                                 ) > rb_current_time())
  76                 {
  77                         sendto_one(source_p, form_str(RPL_LOAD2HI),
  78                                    me.name, source_p->name, "WHOWAS");
  79                         sendto_one(source_p, form_str(RPL_ENDOFWHOWAS),
  80                                    me.name, source_p->name, parv[1]);
  81                         return 0;
  82                 }
  83                 else
  84                         last_used = rb_current_time();
  85         }
  86
  87
  88         if(parc > 2)
  89                 max = atoi(parv[2]);
  90
  91         if(parc > 3)
  92                 if(hunt_server(client_p, source_p, ":%s WHOWAS %s %s :%s", 3, parc, parv))
  93                         return 0;
  94
  95         if(!MyClient(source_p) && (max <= 0 || max > 20))
  96                 max = 20;
  97
  98         if((p = strchr(parv[1], ',')))
  99                 *p = '\0';
 100
 101         nick = parv[1];
 102
 103         sendq_limit = get_sendq(client_p) * 9 / 10;
 104
 105         temp = WHOWASHASH[hash_whowas_name(nick)];
 106         found = 0;
 107         for (; temp; temp = temp->next)
 108         {
 109                 if(!irccmp(nick, temp->name))
 110                 {
 111                         if(cur > 0 && rb_linebuf_len(&client_p->localClient->buf_sendq) > sendq_limit)
 112                         {
 113                                 sendto_one(source_p, form_str(ERR_TOOMANYMATCHES),
 114                                            me.name, source_p->name, "WHOWAS");
 115                                 break;
 116                         }
 117                         sendto_one(source_p, form_str(RPL_WHOWASUSER),
 118                                    me.name, source_p->name, temp->name,
 119                                    temp->username, temp->hostname, temp->realname);
 120                         if (!EmptyString(temp->sockhost) &&
 121                                         strcmp(temp->sockhost, "0") &&
 122                                         show_ip_whowas(temp, source_p))
 123 #if 0
 124                                 sendto_one(source_p, form_str(RPL_WHOWASREAL),
 125                                            me.name, source_p->name, temp->name,
 126                                            "<untracked>", temp->sockhost);
 127 #else
 128                                 sendto_one_numeric(source_p, RPL_WHOISACTUALLY,
 129                                                    form_str(RPL_WHOISACTUALLY),
 130                                                    temp->name, temp->sockhost);
 131 #endif
 132                         if (!EmptyString(temp->suser))
 133                                 sendto_one_numeric(source_p, RPL_WHOISLOGGEDIN,
 134                                                    "%s %s :was logged in as",
 135                                                    temp->name, temp->suser);
 136                         sendto_one_numeric(source_p, RPL_WHOISSERVER,
 137                                            form_str(RPL_WHOISSERVER),
 138                                            temp->name, temp->servername,
 139                                            rb_ctime(temp->logoff, tbuf, sizeof(tbuf)));
 140                         cur++;
 141                         found++;
 142                 }
 143                 if(max > 0 && cur >= max)
 144                         break;
 145         }
 146
 147         if(!found)
 148                 sendto_one(source_p, form_str(ERR_WASNOSUCHNICK),
 149                            me.name, source_p->name, nick);
 150
 151         sendto_one(source_p, form_str(RPL_ENDOFWHOWAS),
 152                    me.name, source_p->name, parv[1]);
 153         return 0;
 154 }