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