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1 | /* |
2 | * charybdis: an advanced ircd. | |
3 | * chm_noctcp: block non-action CTCP (+C mode). | |
4 | * | |
5 | * Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org> | |
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 "send.h" | |
30 | #include "s_conf.h" | |
31 | #include "s_user.h" | |
32 | #include "s_serv.h" | |
33 | #include "numeric.h" | |
34 | #include "chmode.h" | |
35 | #include "inline/stringops.h" | |
36 | ||
37 | static unsigned int mode_noctcp; | |
38 | ||
39 | static void chm_noctcp_process(hook_data_privmsg_channel *); | |
40 | ||
41 | mapi_hfn_list_av1 chm_noctcp_hfnlist[] = { | |
42 | { "privmsg_channel", (hookfn) chm_noctcp_process }, | |
43 | { NULL, NULL } | |
44 | }; | |
45 | ||
46 | static void | |
47 | chm_noctcp_process(hook_data_privmsg_channel *data) | |
48 | { | |
49 | /* don't waste CPU if message is already blocked */ | |
50 | if (data->approved || data->msgtype == MESSAGE_TYPE_NOTICE) | |
51 | return; | |
52 | ||
53 | if (*data->text == '\001' && strncasecmp(data->text + 1, "ACTION ", 7) && data->chptr->mode.mode & mode_noctcp) | |
54 | { | |
55 | sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), data->chptr->chname); | |
56 | data->approved = ERR_CANNOTSENDTOCHAN; | |
57 | return; | |
58 | } | |
59 | else if (rb_dlink_list_length(&data->chptr->locmembers) > (unsigned)(GlobalSetOptions.floodcount / 2)) | |
60 | data->source_p->large_ctcp_sent = rb_current_time(); | |
61 | } | |
62 | ||
63 | static int | |
64 | _modinit(void) | |
65 | { | |
66 | mode_noctcp = cflag_add('C', chm_simple); | |
67 | if (mode_noctcp == 0) | |
68 | return -1; | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | static void | |
74 | _moddeinit(void) | |
75 | { | |
76 | cflag_orphan('C'); | |
77 | } | |
78 | ||
79 | DECLARE_MODULE_AV1(chm_noctcp, _modinit, _moddeinit, NULL, NULL, chm_noctcp_hfnlist, "$Revision$"); |