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968dee68 AC |
1 | /* |
2 | * modules/um_regonlymsg.c | |
3 | * Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org> | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions are | |
7 | * met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright notice, | |
10 | * this list of conditions and the following disclaimer. | |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in the | |
13 | * documentation and/or other materials provided with the distribution. | |
14 | * 3. The name of the author may not be used to endorse or promote products | |
15 | * derived from this software without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
20 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
21 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
25 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
26 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
27 | * POSSIBILITY OF SUCH DAMAGE. | |
28 | */ | |
29 | ||
30 | #include "stdinc.h" | |
31 | #include "modules.h" | |
32 | #include "hook.h" | |
33 | #include "client.h" | |
34 | #include "ircd.h" | |
35 | #include "send.h" | |
36 | #include "hash.h" | |
37 | #include "s_conf.h" | |
38 | #include "s_user.h" | |
39 | #include "s_serv.h" | |
40 | #include "numeric.h" | |
41 | #include "privilege.h" | |
42 | #include "s_newconf.h" | |
2bbfce68 | 43 | #include "logger.h" |
968dee68 AC |
44 | |
45 | static int | |
46 | um_regonlymsg_modinit(void) | |
47 | { | |
48 | user_modes['R'] = find_umode_slot(); | |
49 | construct_umodebuf(); | |
50 | ||
2bbfce68 AC |
51 | if (!user_modes['R']) |
52 | { | |
53 | ierror("um_regonlymsg: unable to allocate usermode slot for +R, unloading module"); | |
54 | return -1; | |
55 | } | |
56 | ||
968dee68 AC |
57 | return 0; |
58 | } | |
59 | ||
60 | static void | |
61 | um_regonlymsg_moddeinit(void) | |
62 | { | |
63 | user_modes['R'] = 0; | |
64 | construct_umodebuf(); | |
65 | } | |
66 | ||
67 | #define IsSetRegOnlyMsg(c) ((c->umodes & user_modes['R']) == user_modes['R']) | |
68 | ||
69 | static const char um_regonlymsg_desc[] = | |
70 | "Provides usermode +R which restricts messages from unregistered users."; | |
71 | ||
72 | static bool | |
73 | allow_message(struct Client *source_p, struct Client *target_p) | |
74 | { | |
4436a7ca AC |
75 | if (!MyClient(target_p)) |
76 | return true; | |
77 | ||
968dee68 | 78 | if (!IsSetRegOnlyMsg(target_p)) |
dc5d1d01 | 79 | return true; |
968dee68 AC |
80 | |
81 | if (IsServer(source_p)) | |
dc5d1d01 | 82 | return true; |
968dee68 AC |
83 | |
84 | /* XXX: controversial? allow opers to send through +R */ | |
85 | if (IsOper(source_p)) | |
dc5d1d01 | 86 | return true; |
968dee68 AC |
87 | |
88 | if (accept_message(source_p, target_p)) | |
dc5d1d01 | 89 | return true; |
968dee68 AC |
90 | |
91 | if (source_p->user->suser[0]) | |
dc5d1d01 | 92 | return true; |
968dee68 | 93 | |
dc5d1d01 | 94 | return false; |
968dee68 AC |
95 | } |
96 | ||
97 | static void | |
daaf127d | 98 | h_hdl_invite(void *vdata) |
968dee68 AC |
99 | { |
100 | hook_data_channel_approval *data = vdata; | |
101 | struct Client *source_p = data->client; | |
102 | struct Client *target_p = data->target; | |
402b21d4 | 103 | static char errorbuf[BUFSIZE]; |
968dee68 | 104 | |
90e99760 AC |
105 | if (data->approved) |
106 | return; | |
107 | ||
968dee68 AC |
108 | if (allow_message(source_p, target_p)) |
109 | return; | |
110 | ||
402b21d4 AC |
111 | snprintf(errorbuf, sizeof errorbuf, form_str(ERR_NONONREG), |
112 | target_p->name); | |
968dee68 AC |
113 | |
114 | data->approved = ERR_NONONREG; | |
402b21d4 | 115 | data->error = errorbuf; |
968dee68 AC |
116 | } |
117 | ||
118 | static void | |
119 | h_hdl_privmsg_user(void *vdata) | |
120 | { | |
121 | hook_data_privmsg_user *data = vdata; | |
122 | struct Client *source_p = data->source_p; | |
123 | struct Client *target_p = data->target_p; | |
124 | ||
90e99760 AC |
125 | if (data->approved) |
126 | return; | |
127 | ||
968dee68 AC |
128 | if (allow_message(source_p, target_p)) |
129 | return; | |
130 | ||
131 | if (data->msgtype == MESSAGE_TYPE_NOTICE) | |
132 | return; | |
133 | ||
134 | sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG), | |
135 | target_p->name); | |
136 | ||
137 | data->approved = ERR_NONONREG; | |
138 | } | |
139 | ||
140 | static mapi_hfn_list_av1 um_regonlymsg_hfnlist[] = { | |
daaf127d | 141 | { "invite", h_hdl_invite }, |
968dee68 AC |
142 | { "privmsg_user", h_hdl_privmsg_user }, |
143 | { NULL, NULL } | |
144 | }; | |
145 | ||
146 | DECLARE_MODULE_AV2(um_regonlymsg, um_regonlymsg_modinit, um_regonlymsg_moddeinit, | |
147 | NULL, NULL, um_regonlymsg_hfnlist, NULL, NULL, um_regonlymsg_desc); |