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9691a6d819
switches like antimixedutf8 did, and counts the number of characters
used per unicode block. Potentially more can be added later, this is
flexible and modules can add stuff (..well not yet.. the struct is
missing some members..).
Use it from antimixedutf8 so that it now uses the new code, which is
similar to what I made and then reverted in July 2023:
3e2f668f10
..except that it now calculated in src/modules/utf8functions.c.
But yeah, this needs more testing and possibly (default) score
adjustments to deal with false positives !! And a warning in release notes :D
Put the text analysis in ClientContext member textanalysis,
so typically accessed through clictx->textanalysis.
Note that this struct can (and often is) NULL, for example if it is
a remote client, if it is not a PRIVMSG/NOTICE (will improve later)
or if the utf8functions module is not loaded (to keep things optional).
BREAKING CHANGE is that ClientContext is now passed in the
HOOKTYPE_CAN_SEND_TO_CHANNEL and HOOKTYPE_CAN_SEND_TO_USER hooks.
So HOOKTYPE_CAN_SEND_TO_USER prototype changed from:
int hooktype_can_send_to_user(Client *client, Client *target, const char **text, const char **errmsg, SendType sendtype);
To:
int hooktype_can_send_to_user(Client *client, Client *target, const char **text, const char **errmsg, SendType sendtype, ClientContext *clictx);
And HOOKTYPE_CAN_SEND_TO_CHANNEL prototype changes from:
int hooktype_can_send_to_channel(Client *client, Channel *channel, Membership *member, const char **text, const char **errmsg, SendType sendtype);
To:
int hooktype_can_send_to_channel(Client *client, Channel *channel, Membership *member, const char **text, const char **errmsg, SendType sendtype, ClientContext *clictx);
A side-affect of this change for antimixedutf8 purposes is that,
while the analysis is only done once per line, the 'actions' are
performed for each target, so the action will run 4 times for
"PRIVMSG a,b,c,d :text" although that may not be important in
practice. Just mentioning.
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*
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* Channel Mode +m
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* (C) Copyright 2021 Syzop and the UnrealIRCd team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "unrealircd.h"
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ModuleHeader MOD_HEADER
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= {
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"chanmodes/moderated",
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"6.0",
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"Channel Mode +m",
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"UnrealIRCd Team",
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"unrealircd-6",
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};
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/* Global variables */
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Cmode_t EXTCMODE_MODERATED;
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/* Forward declarations */
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int moderated_can_send_to_channel(Client *client, Channel *channel, Membership *lp, const char **msg, const char **errmsg, SendType sendtype, ClientContext *clictx);
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const char *moderated_pre_local_part(Client *client, Channel *channel, const char *text);
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int moderated_can_set_topic(Client *client, Channel *channel, const char *topic, const char **errmsg);
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/* Macros */
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#define IsModerated(channel) (channel->mode.mode & EXTCMODE_MODERATED)
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MOD_INIT()
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{
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CmodeInfo req;
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MARK_AS_OFFICIAL_MODULE(modinfo);
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memset(&req, 0, sizeof(req));
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req.paracount = 0;
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req.letter = 'm';
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req.is_ok = extcmode_default_requirehalfop;
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CmodeAdd(modinfo->handle, req, &EXTCMODE_MODERATED);
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HookAdd(modinfo->handle, HOOKTYPE_CAN_SEND_TO_CHANNEL, 0, moderated_can_send_to_channel);
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HookAddConstString(modinfo->handle, HOOKTYPE_PRE_LOCAL_PART, 0, moderated_pre_local_part);
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HookAdd(modinfo->handle, HOOKTYPE_CAN_SET_TOPIC, 0, moderated_can_set_topic);
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return MOD_SUCCESS;
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}
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MOD_LOAD()
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{
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return MOD_SUCCESS;
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}
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MOD_UNLOAD()
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{
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return MOD_SUCCESS;
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}
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int moderated_can_send_to_channel(Client *client, Channel *channel, Membership *m, const char **msg, const char **errmsg, SendType sendtype, ClientContext *clictx)
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{
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if (IsModerated(channel) && (!m || !check_channel_access_membership(m, "vhoaq")) &&
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!op_can_override("channel:override:message:moderated",client,channel,NULL))
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{
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Hook *h;
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for (h = Hooks[HOOKTYPE_CAN_BYPASS_CHANNEL_MESSAGE_RESTRICTION]; h; h = h->next)
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{
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int i = (*(h->func.intfunc))(client, channel, BYPASS_CHANMSG_MODERATED);
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if (i == HOOK_ALLOW)
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return HOOK_CONTINUE; /* bypass +m restriction */
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if (i != HOOK_CONTINUE)
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break;
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}
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*errmsg = "You need voice (+v)";
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return HOOK_DENY; /* BLOCK message */
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}
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return HOOK_CONTINUE;
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}
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/** Remove PART reason too if the channel is +m, -t, and user not +vhoaq */
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const char *moderated_pre_local_part(Client *client, Channel *channel, const char *text)
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{
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if (IsModerated(channel) && !check_channel_access(client, channel, "v") && !check_channel_access(client, channel, "h"))
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return NULL;
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return text;
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}
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int moderated_can_set_topic(Client *client, Channel *channel, const char *topic, const char **errmsg)
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{
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static char errmsg_buf[NICKLEN+256];
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/* Channel is +m but user is not +vhoaq: reject the topic change */
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if (has_channel_mode(channel, 'm') && !check_channel_access(client, channel, "vhoaq"))
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{
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char buf[512];
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snprintf(buf, sizeof(buf), "Voice (+v) or higher is required in order to change the topic on %s (channel is +m)", channel->name);
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buildnumeric(errmsg_buf, sizeof(errmsg_buf), client, ERR_CANNOTDOCOMMAND, "TOPIC", buf);
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*errmsg = errmsg_buf;
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return EX_DENY;
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}
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return EX_ALLOW;
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}
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