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construct/modules/chm_noctcp.cc
2016-08-20 19:30:35 -07:00

75 lines
2.4 KiB
C++

/*
* charybdis: an advanced ircd.
* chm_noctcp: block non-action CTCP (+C mode).
*
* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
using namespace ircd;
static const char chm_noctcp_desc[] =
"Adds channel mode +C, which blocks CTCP messages from a channel (except ACTION)";
static chan::mode::type mode_noctcp;
static void chm_noctcp_process(hook_data_privmsg_channel *);
mapi_hfn_list_av1 chm_noctcp_hfnlist[] = {
{ "privmsg_channel", (hookfn) chm_noctcp_process },
{ NULL, NULL }
};
static void
chm_noctcp_process(hook_data_privmsg_channel *data)
{
/* don't waste CPU if message is already blocked */
if (data->approved || data->msgtype == MESSAGE_TYPE_NOTICE)
return;
if (*data->text == '\001' && rb_strncasecmp(data->text + 1, "ACTION ", 7) && data->chptr->mode.mode & mode_noctcp)
{
sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), data->chptr->name.c_str());
data->approved = ERR_CANNOTSENDTOCHAN;
return;
}
else if (local_size(data->chptr->members) > (unsigned)(GlobalSetOptions.floodcount / 2))
data->source_p->large_ctcp_sent = rb_current_time();
}
static int
_modinit(void)
{
using namespace chan::mode;
mode_noctcp = add('C', category::D, functor::simple);
if (mode_noctcp == 0)
return -1;
return 0;
}
static void
_moddeinit(void)
{
using namespace chan::mode;
orphan('C');
}
DECLARE_MODULE_AV2(chm_noctcp, _modinit, _moddeinit, NULL, NULL, chm_noctcp_hfnlist, NULL, NULL, chm_noctcp_desc);