modules/m_testmask.c

   1 /*
   2  *  m_testmask.c: Shows the number of matching local and global clients
   3  *                for a user@host mask
   4  *
   5  *  Copyright (C) 2003 by W. Campbell
   6  *  Coypright (C) 2004 ircd-ratbox development team
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *  1.Redistributions of source code must retain the above copyright notice,
  13  *    this list of conditions and the following disclaimer.
  14  *  2.Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *  3.The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22  *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  23  *  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  24  *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25  *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  26  *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  28  *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  29  *  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  *  POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *  $Id: m_testmask.c 3161 2007-01-25 07:23:01Z nenolod $
  33  *
  34  */
  35
  36 /* List of ircd includes from ../include/ */
  37 #include "stdinc.h"
  38 #include "client.h"
  39 #include "common.h"     /* FALSE bleah */
  40 #include "ircd.h"
  41 #include "match.h"
  42 #include "numeric.h"
  43 #include "s_conf.h"
  44 #include "logger.h"
  45 #include "s_serv.h"
  46 #include "send.h"
  47 #include "msg.h"
  48 #include "parse.h"
  49 #include "modules.h"
  50
  51 static int mo_testmask(struct Client *client_p, struct Client *source_p,
  52                         int parc, const char *parv[]);
  53
  54 struct Message testmask_msgtab = {
  55         "TESTMASK", 0, 0, 0, MFLG_SLOW,
  56         {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_testmask, 2}}
  57 };
  58
  59 mapi_clist_av1 testmask_clist[] = { &testmask_msgtab, NULL };
  60 DECLARE_MODULE_AV1(testmask, NULL, NULL, testmask_clist, NULL, NULL, "$Revision: 3161 $");
  61
  62 static const char *empty_sockhost = "255.255.255.255";
  63 static const char *spoofed_sockhost = "0";
  64
  65 static int
  66 mo_testmask(struct Client *client_p, struct Client *source_p,
  67                         int parc, const char *parv[])
  68 {
  69         struct Client *target_p;
  70         int lcount = 0;
  71         int gcount = 0;
  72         char *name, *username, *hostname;
  73         const char *sockhost;
  74         char *gecos = NULL;
  75         rb_dlink_node *ptr;
  76
  77         name = LOCAL_COPY(parv[1]);
  78         collapse(name);
  79
  80         /* username is required */
  81         if((hostname = strchr(name, '@')) == NULL)
  82         {
  83                 sendto_one_notice(source_p, ":Invalid parameters");
  84                 return 0;
  85         }
  86
  87         *hostname++ = '\0';
  88
  89         /* nickname is optional */
  90         if((username = strchr(name, '!')) == NULL)
  91         {
  92                 username = name;
  93                 name = NULL;
  94         }
  95         else
  96                 *username++ = '\0';
  97
  98         if(EmptyString(username) || EmptyString(hostname))
  99         {
 100                 sendto_one_notice(source_p, ":Invalid parameters");
 101                 return 0;
 102         }
 103
 104         if(parc > 2 && !EmptyString(parv[2]))
 105         {
 106                 gecos = LOCAL_COPY(parv[2]);
 107                 collapse_esc(gecos);
 108         }
 109
 110         RB_DLINK_FOREACH(ptr, global_client_list.head)
 111         {
 112                 target_p = ptr->data;
 113
 114                 if(!IsPerson(target_p))
 115                         continue;
 116
 117                 if(EmptyString(target_p->sockhost))
 118                         sockhost = empty_sockhost;
 119                 else if(!show_ip(source_p, target_p))
 120                         sockhost = spoofed_sockhost;
 121                 else
 122                         sockhost = target_p->sockhost;
 123
 124                 if(match(username, target_p->username) &&
 125                    (match(hostname, target_p->host) ||
 126                     match(hostname, target_p->orighost) ||
 127                     match(hostname, sockhost) || match_ips(hostname, sockhost)))
 128                 {
 129                         if(name && !match(name, target_p->name))
 130                                 continue;
 131
 132                         if(gecos && !match_esc(gecos, target_p->info))
 133                                 continue;
 134
 135                         if(MyClient(target_p))
 136                                 lcount++;
 137                         else
 138                                 gcount++;
 139                 }
 140         }
 141
 142         sendto_one(source_p, form_str(RPL_TESTMASKGECOS),
 143                         me.name, source_p->name,
 144                         lcount, gcount, name ? name : "*",
 145                         username, hostname, gecos ? gecos : "*");
 146         return 0;
 147 }