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1 | /* | |
2 | * Solanum: a slightly advanced ircd | |
3 | * chm_noctcp: block non-action CTCP (+C mode). | |
4 | * | |
5 | * Copyright (c) 2012 Ariadne Conill <ariadne@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 const char chm_noctcp_desc[] = | |
38 | "Adds channel mode +C, which blocks CTCP messages from a channel (except ACTION)"; | |
39 | ||
40 | static unsigned int mode_noctcp; | |
41 | ||
42 | static void chm_noctcp_process(void *); | |
43 | ||
44 | mapi_hfn_list_av1 chm_noctcp_hfnlist[] = { | |
45 | { "privmsg_channel", chm_noctcp_process }, | |
46 | { NULL, NULL } | |
47 | }; | |
48 | ||
49 | static void | |
50 | chm_noctcp_process(void *data_) | |
51 | { | |
52 | hook_data_privmsg_channel *data = data_; | |
53 | /* don't waste CPU if message is already blocked */ | |
54 | if (data->approved) | |
55 | return; | |
56 | ||
57 | if (*data->text == '\001' && | |
58 | data->chptr->mode.mode & mode_noctcp && | |
59 | !(data->msgtype == MESSAGE_TYPE_PRIVMSG && !rb_strncasecmp(data->text + 1, "ACTION ", 7))) | |
60 | { | |
61 | sendto_one_numeric(data->source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), data->chptr->chname); | |
62 | data->approved = ERR_CANNOTSENDTOCHAN; | |
63 | return; | |
64 | } | |
65 | else if (rb_dlink_list_length(&data->chptr->locmembers) > (unsigned)(GlobalSetOptions.floodcount / 2)) | |
66 | data->source_p->large_ctcp_sent = rb_current_time(); | |
67 | } | |
68 | ||
69 | static int | |
70 | _modinit(void) | |
71 | { | |
72 | mode_noctcp = cflag_add('C', chm_simple); | |
73 | if (mode_noctcp == 0) | |
74 | return -1; | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | static void | |
80 | _moddeinit(void) | |
81 | { | |
82 | cflag_orphan('C'); | |
83 | } | |
84 | ||
85 | DECLARE_MODULE_AV2(chm_noctcp, _modinit, _moddeinit, NULL, NULL, chm_noctcp_hfnlist, NULL, NULL, chm_noctcp_desc); |