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