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 "sprintf_irc.h"
  29 #include "tools.h"
  30 #include "channel.h"
  31 #include "client.h"
  32 #include "common.h"
  33 #include "hash.h"
  34 #include "irc_string.h"
  35 #include "ircd.h"
  36 #include "numeric.h"
  37 #include "send.h"
  38 #include "s_serv.h"
  39 #include "s_conf.h"
  40 #include "msg.h"
  41 #include "parse.h"
  42 #include "modules.h"
  43
  44 static int m_names(struct Client *, struct Client *, int, const char **);
  45
  46 struct Message names_msgtab = {
  47         "NAMES", 0, 0, 0, MFLG_SLOW,
  48         {mg_unreg, {m_names, 0}, mg_ignore, mg_ignore, mg_ignore, {m_names, 0}}
  49 };
  50
  51 mapi_clist_av1 names_clist[] = { &names_msgtab, NULL };
  52 DECLARE_MODULE_AV1(names, NULL, NULL, names_clist, NULL, NULL, "$Revision: 254 $");
  53
  54 static void names_global(struct Client *source_p);
  55
  56 /************************************************************************
  57  * m_names() - Added by Jto 27 Apr 1989
  58  ************************************************************************/
  59
  60 /*
  61  * m_names
  62  *      parv[0] = sender prefix
  63  *      parv[1] = channel
  64  */
  65 static int
  66 m_names(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  67 {
  68         static time_t last_used = 0;
  69         struct Channel *chptr = NULL;
  70         char *s;
  71
  72         if(parc > 1 && !EmptyString(parv[1]))
  73         {
  74                 char *p = LOCAL_COPY(parv[1]);
  75                 if((s = strchr(p, ',')))
  76                         *s = '\0';
  77
  78                 if(!check_channel_name(p))
  79                 {
  80                         sendto_one_numeric(source_p, ERR_BADCHANNAME,
  81                                            form_str(ERR_BADCHANNAME),
  82                                            (unsigned char *) p);
  83                         return 0;
  84                 }
  85
  86                 if((chptr = find_channel(p)) != NULL)
  87                         channel_member_names(chptr, source_p, 1);
  88                 else
  89                         sendto_one(source_p, form_str(RPL_ENDOFNAMES),
  90                                    me.name, source_p->name, p);
  91         }
  92         else
  93         {
  94                 if(!IsOper(source_p))
  95                 {
  96                         if((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
  97                         {
  98                                 sendto_one(source_p, form_str(RPL_LOAD2HI),
  99                                            me.name, source_p->name, "NAMES");
 100                                 sendto_one(source_p, form_str(RPL_ENDOFNAMES),
 101                                            me.name, source_p->name, "*");
 102                                 return 0;
 103                         }
 104                         else
 105                                 last_used = CurrentTime;
 106                 }
 107
 108                 names_global(source_p);
 109                 sendto_one(source_p, form_str(RPL_ENDOFNAMES),
 110                            me.name, source_p->name, "*");
 111         }
 112
 113         return 0;
 114 }
 115
 116 /*
 117  * names_global
 118  *
 119  * inputs       - pointer to client struct requesting names
 120  * output       - none
 121  * side effects - lists all non public non secret channels
 122  */
 123 static void
 124 names_global(struct Client *source_p)
 125 {
 126         int mlen;
 127         int tlen;
 128         int cur_len;
 129         int dont_show = NO;
 130         rb_dlink_node *lp, *ptr;
 131         struct Client *target_p;
 132         struct Channel *chptr = NULL;
 133         struct membership *msptr;
 134         char buf[BUFSIZE];
 135         char *t;
 136
 137         /* first do all visible channels */
 138         RB_DLINK_FOREACH(ptr, global_channel_list.head)
 139         {
 140                 chptr = ptr->data;
 141                 channel_member_names(chptr, source_p, 0);
 142         }
 143         cur_len = mlen = ircsprintf(buf, form_str(RPL_NAMREPLY),
 144                                     me.name, source_p->name, "*", "*");
 145         t = buf + mlen;
 146
 147         /* Second, do all clients in one big sweep */
 148         RB_DLINK_FOREACH(ptr, global_client_list.head)
 149         {
 150                 target_p = ptr->data;
 151                 dont_show = NO;
 152
 153                 if(!IsPerson(target_p) || IsInvisible(target_p))
 154                         continue;
 155
 156                 /* we want to show -i clients that are either:
 157                  *   a) not on any channels
 158                  *   b) only on +p channels
 159                  *
 160                  * both were missed out above.  if the target is on a
 161                  * common channel with source, its already been shown.
 162                  */
 163                 RB_DLINK_FOREACH(lp, target_p->user->channel.head)
 164                 {
 165                         msptr = lp->data;
 166                         chptr = msptr->chptr;
 167
 168                         if(PubChannel(chptr) || IsMember(source_p, chptr) ||
 169                            SecretChannel(chptr))
 170                         {
 171                                 dont_show = YES;
 172                                 break;
 173                         }
 174                 }
 175
 176                 if(dont_show)
 177                         continue;
 178
 179                 if((cur_len + NICKLEN + 2) > (BUFSIZE - 3))
 180                 {
 181                         sendto_one(source_p, "%s", buf);
 182                         cur_len = mlen;
 183                         t = buf + mlen;
 184                 }
 185
 186                 tlen = ircsprintf(t, "%s ", target_p->name);
 187                 cur_len += tlen;
 188                 t += tlen;
 189         }
 190
 191         if(cur_len > mlen)
 192                 sendto_one(source_p, "%s", buf);
 193 }