modules/m_names.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_names.c: Shows the users who are online.
   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_names.c 254 2005-09-21 23:35:12Z nenolod $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "channel.h"
  29 #include "client.h"
  30 #include "common.h"
  31 #include "hash.h"
  32 #include "match.h"
  33 #include "ircd.h"
  34 #include "numeric.h"
  35 #include "send.h"
  36 #include "s_serv.h"
  37 #include "s_conf.h"
  38 #include "msg.h"
  39 #include "parse.h"
  40 #include "modules.h"
  41
  42 static int m_names(struct Client *, struct Client *, int, const char **);
  43
  44 struct Message names_msgtab = {
  45         "NAMES", 0, 0, 0, MFLG_SLOW,
  46         {mg_unreg, {m_names, 0}, mg_ignore, mg_ignore, mg_ignore, {m_names, 0}}
  47 };
  48
  49 mapi_clist_av1 names_clist[] = { &names_msgtab, NULL };
  50 DECLARE_MODULE_AV1(names, NULL, NULL, names_clist, NULL, NULL, "$Revision: 254 $");
  51
  52 static void names_global(struct Client *source_p);
  53
  54 /************************************************************************
  55  * m_names() - Added by Jto 27 Apr 1989
  56  ************************************************************************/
  57
  58 /*
  59  * m_names
  60  *      parv[0] = sender prefix
  61  *      parv[1] = channel
  62  */
  63 static int
  64 m_names(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  65 {
  66         static time_t last_used = 0;
  67         struct Channel *chptr = NULL;
  68         char *s;
  69
  70         if(parc > 1 && !EmptyString(parv[1]))
  71         {
  72                 char *p = LOCAL_COPY(parv[1]);
  73                 if((s = strchr(p, ',')))
  74                         *s = '\0';
  75
  76                 if(!check_channel_name(p))
  77                 {
  78                         sendto_one_numeric(source_p, ERR_BADCHANNAME,
  79                                            form_str(ERR_BADCHANNAME),
  80                                            (unsigned char *) p);
  81                         return 0;
  82                 }
  83
  84                 if((chptr = find_channel(p)) != NULL)
  85                         channel_member_names(chptr, source_p, 1);
  86                 else
  87                         sendto_one(source_p, form_str(RPL_ENDOFNAMES),
  88                                    me.name, source_p->name, p);
  89         }
  90         else
  91         {
  92                 if(!IsOper(source_p))
  93                 {
  94                         if((last_used + ConfigFileEntry.pace_wait) > rb_current_time())
  95                         {
  96                                 sendto_one(source_p, form_str(RPL_LOAD2HI),
  97                                            me.name, source_p->name, "NAMES");
  98                                 sendto_one(source_p, form_str(RPL_ENDOFNAMES),
  99                                            me.name, source_p->name, "*");
 100                                 return 0;
 101                         }
 102                         else
 103                                 last_used = rb_current_time();
 104                 }
 105
 106                 names_global(source_p);
 107                 sendto_one(source_p, form_str(RPL_ENDOFNAMES),
 108                            me.name, source_p->name, "*");
 109         }
 110
 111         return 0;
 112 }
 113
 114 /*
 115  * names_global
 116  *
 117  * inputs       - pointer to client struct requesting names
 118  * output       - none
 119  * side effects - lists all non public non secret channels
 120  */
 121 static void
 122 names_global(struct Client *source_p)
 123 {
 124         int mlen;
 125         int tlen;
 126         int cur_len;
 127         int dont_show = NO;
 128         rb_dlink_node *lp, *ptr;
 129         struct Client *target_p;
 130         struct Channel *chptr = NULL;
 131         struct membership *msptr;
 132         char buf[BUFSIZE];
 133         char *t;
 134
 135         /* first do all visible channels */
 136         RB_DLINK_FOREACH(ptr, global_channel_list.head)
 137         {
 138                 chptr = ptr->data;
 139                 channel_member_names(chptr, source_p, 0);
 140         }
 141         cur_len = mlen = rb_sprintf(buf, form_str(RPL_NAMREPLY),
 142                                     me.name, source_p->name, "*", "*");
 143         t = buf + mlen;
 144
 145         /* Second, do all clients in one big sweep */
 146         RB_DLINK_FOREACH(ptr, global_client_list.head)
 147         {
 148                 target_p = ptr->data;
 149                 dont_show = NO;
 150
 151                 if(!IsPerson(target_p) || IsInvisible(target_p))
 152                         continue;
 153
 154                 /* we want to show -i clients that are either:
 155                  *   a) not on any channels
 156                  *   b) only on +p channels
 157                  *
 158                  * both were missed out above.  if the target is on a
 159                  * common channel with source, its already been shown.
 160                  */
 161                 RB_DLINK_FOREACH(lp, target_p->user->channel.head)
 162                 {
 163                         msptr = lp->data;
 164                         chptr = msptr->chptr;
 165
 166                         if(PubChannel(chptr) || IsMember(source_p, chptr) ||
 167                            SecretChannel(chptr))
 168                         {
 169                                 dont_show = YES;
 170                                 break;
 171                         }
 172                 }
 173
 174                 if(dont_show)
 175                         continue;
 176
 177                 if((cur_len + NICKLEN + 2) > (BUFSIZE - 3))
 178                 {
 179                         sendto_one(source_p, "%s", buf);
 180                         cur_len = mlen;
 181                         t = buf + mlen;
 182                 }
 183
 184                 tlen = rb_sprintf(t, "%s ", target_p->name);
 185                 cur_len += tlen;
 186                 t += tlen;
 187         }
 188
 189         if(cur_len > mlen)
 190                 sendto_one(source_p, "%s", buf);
 191 }