extensions/chm_regmsg.c

   1 /*
   2  * Solanum: a slightly advanced ircd
   3  * chm_regmsg: require identification to chat (+R mode).
   4  *
   5  * Copyright (c) 2020 Eric Mertens <emertens@gmail.com>
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice is present in all copies.
  10  *
  11  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  12  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  13  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  14  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  15  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  16  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  17  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  18  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  19  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  20  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  21  * POSSIBILITY OF SUCH DAMAGE.
  22  */
  23
  24 #include "stdinc.h"
  25 #include "modules.h"
  26 #include "hook.h"
  27 #include "client.h"
  28 #include "ircd.h"
  29 #include "logger.h"
  30 #include "send.h"
  31 #include "s_conf.h"
  32 #include "s_user.h"
  33 #include "s_serv.h"
  34 #include "numeric.h"
  35 #include "chmode.h"
  36 #include "inline/stringops.h"
  37
  38 static const char chm_regmsg_desc[] =
  39         "Adds channel mode +R, which blocks messagess from unregistered users";
  40
  41 static unsigned int mode_regmsg;
  42
  43 static void chm_regmsg_process(void *);
  44
  45 mapi_hfn_list_av1 chm_regmsg_hfnlist[] = {
  46         { "privmsg_channel", (hookfn) chm_regmsg_process },
  47         { NULL, NULL }
  48 };
  49
  50 static void
  51 chm_regmsg_process(void *data_)
  52 {
  53         hook_data_privmsg_channel *data = data_;
  54         struct membership *msptr;
  55
  56         /* message is already blocked, defer */
  57         if (data->approved)
  58                 return;
  59
  60         /* user is identified, accept */
  61         if (!EmptyString(data->source_p->user->suser))
  62                 return;
  63
  64         /* voice and op override identification requirement, accept */
  65         msptr = find_channel_membership(data->chptr, data->source_p);
  66         if (is_chanop_voiced(msptr))
  67                 return;
  68
  69         sendto_one_numeric(data->source_p, ERR_MSGNEEDREGGEDNICK, form_str(ERR_MSGNEEDREGGEDNICK),
  70                 data->source_p->name, data->chptr->chname);
  71         data->approved = ERR_MSGNEEDREGGEDNICK;
  72 }
  73
  74 static int
  75 _modinit(void)
  76 {
  77         mode_regmsg = cflag_add('R', chm_simple);
  78         if (mode_regmsg == 0) {
  79                 ierror("chm_regmsg: unable to allocate cmode slot for +R, unloading module");
  80                 return -1;
  81         }
  82
  83         return 0;
  84 }
  85
  86 static void
  87 _moddeinit(void)
  88 {
  89         cflag_orphan('R');
  90 }
  91
  92 DECLARE_MODULE_AV2(chm_regmsg, _modinit, _moddeinit, NULL, NULL, chm_regmsg_hfnlist, NULL, NULL, chm_regmsg_desc);