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  */
  33
  34 /* List of ircd includes from ../include/ */
  35 #include "stdinc.h"
  36 #include "client.h"
  37 #include "common.h"
  38 #include "ircd.h"
  39 #include "match.h"
  40 #include "numeric.h"
  41 #include "s_conf.h"
  42 #include "logger.h"
  43 #include "s_serv.h"
  44 #include "send.h"
  45 #include "msg.h"
  46 #include "parse.h"
  47 #include "modules.h"
  48
  49 static const char testmask_desc[] =
  50         "Provides the TESTMASK command to show the number of clients matching a hostmask or GECOS";
  51
  52 static void mo_testmask(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
  53                         int parc, const char *parv[]);
  54
  55 struct Message testmask_msgtab = {
  56         "TESTMASK", 0, 0, 0, 0,
  57         {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_testmask, 2}}
  58 };
  59
  60 mapi_clist_av1 testmask_clist[] = { &testmask_msgtab, NULL };
  61 DECLARE_MODULE_AV2(testmask, NULL, NULL, testmask_clist, NULL, NULL, NULL, NULL, testmask_desc);
  62
  63 static const char *empty_sockhost = "255.255.255.255";
  64 static const char *spoofed_sockhost = "0";
  65
  66 static void
  67 mo_testmask(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
  68                         int parc, const char *parv[])
  69 {
  70         struct Client *target_p;
  71         int lcount = 0;
  72         int gcount = 0;
  73         char *name, *username, *hostname;
  74         const char *sockhost;
  75         char *gecos = NULL;
  76         rb_dlink_node *ptr;
  77
  78         name = LOCAL_COPY(parv[1]);
  79         collapse(name);
  80
  81         /* username is required */
  82         if((hostname = strchr(name, '@')) == NULL)
  83         {
  84                 sendto_one_notice(source_p, ":Invalid parameters");
  85                 return;
  86         }
  87
  88         *hostname++ = '\0';
  89
  90         /* nickname is optional */
  91         if((username = strchr(name, '!')) == NULL)
  92         {
  93                 username = name;
  94                 name = NULL;
  95         }
  96         else
  97                 *username++ = '\0';
  98
  99         if(EmptyString(username) || EmptyString(hostname))
 100         {
 101                 sendto_one_notice(source_p, ":Invalid parameters");
 102                 return;
 103         }
 104
 105         if(parc > 2 && !EmptyString(parv[2]))
 106         {
 107                 gecos = LOCAL_COPY(parv[2]);
 108                 collapse_esc(gecos);
 109         }
 110
 111         RB_DLINK_FOREACH(ptr, global_client_list.head)
 112         {
 113                 target_p = ptr->data;
 114
 115                 if(!IsPerson(target_p))
 116                         continue;
 117
 118                 if(EmptyString(target_p->sockhost))
 119                         sockhost = empty_sockhost;
 120                 else if(!show_ip(source_p, target_p))
 121                         sockhost = spoofed_sockhost;
 122                 else
 123                         sockhost = target_p->sockhost;
 124
 125                 if(match(username, target_p->username) &&
 126                    (match(hostname, target_p->host) ||
 127                     match(hostname, target_p->orighost) ||
 128                     match(hostname, sockhost) || match_ips(hostname, sockhost)))
 129                 {
 130                         if(name && !match(name, target_p->name))
 131                                 continue;
 132
 133                         if(gecos && !match_esc(gecos, target_p->info))
 134                                 continue;
 135
 136                         if(MyClient(target_p))
 137                                 lcount++;
 138                         else
 139                                 gcount++;
 140                 }
 141         }
 142
 143         sendto_one(source_p, form_str(RPL_TESTMASKGECOS),
 144                         me.name, source_p->name,
 145                         lcount, gcount, name ? name : "*",
 146                         username, hostname, gecos ? gecos : "*");
 147 }