extensions/umode_noctcp.c

   1 /*
   2  * umode_noctcp.c: user mode +C which blocks CTCPs to the user
   3  *
   4  * Copyright (c) 2016 M. Teufel
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice is present in all copies.
   9  *
  10  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  11  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  12  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  13  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  14  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  15  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  16  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  17  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  18  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  19  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  20  * POSSIBILITY OF SUCH DAMAGE.
  21  */
  22
  23 #include "stdinc.h"
  24 #include "modules.h"
  25 #include "hook.h"
  26 #include "client.h"
  27 #include "ircd.h"
  28 #include "send.h"
  29 #include "s_user.h"
  30 #include "numeric.h"
  31 #include "inline/stringops.h"
  32
  33 static const char umode_noctcp_desc[] =
  34         "Adds user mode +C which blocks CTCPs to the user.";
  35
  36 static void umode_noctcp_process(hook_data_privmsg_user *);
  37
  38 mapi_hfn_list_av1 umode_noctcp_hfnlist[] = {
  39         { "privmsg_user", (hookfn) umode_noctcp_process },
  40         { NULL, NULL }
  41 };
  42
  43 static void
  44 umode_noctcp_process(hook_data_privmsg_user *data) {
  45         if (data->approved || data->msgtype == MESSAGE_TYPE_NOTICE) {
  46                 return;
  47         }
  48
  49         if (data->target_p->umodes & user_modes['C'] && *data->text == '\001' && rb_strncasecmp(data->text + 1, "ACTION", 6)) {
  50                 sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOUSER, form_str(ERR_CANNOTSENDTOUSER), data->target_p->name, "+C set");
  51                 data->approved = ERR_CANNOTSENDTOUSER;
  52                 return;
  53         }
  54 }
  55
  56 static int
  57 _modinit(void)
  58 {
  59         user_modes['C'] = find_umode_slot();
  60         construct_umodebuf();
  61
  62         return 0;
  63 }
  64
  65 static void
  66 _moddeinit(void)
  67 {
  68         user_modes['C'] = 0;
  69         construct_umodebuf();
  70 }
  71
  72 DECLARE_MODULE_AV2(umode_noctcp, _modinit, _moddeinit, NULL, NULL, umode_noctcp_hfnlist, NULL, NULL, umode_noctcp_desc);