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restrict-commands: add option 'channel-create' (channel creation) (#285)

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* restrict-commands: add option 'channel-create' for managing who may create new channels.
This has been a commonly requested feature with different requested options, I think it makes sense to do it properly from here
This commit is contained in:
Valerie Liu
2024-06-14 21:05:34 +08:00
committed by GitHub
parent 58646bafbb
commit 54a8fc140b
1 changed files with 51 additions and 0 deletions
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src/modules/restrict-commands.c
+51
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@@ -48,7 +48,9 @@ int rcmd_configtest(ConfigFile *cf, ConfigEntry *ce, int type, int *errs);
int rcmd_configrun(ConfigFile *cf, ConfigEntry *ce, int type);
int rcmd_can_send_to_channel(Client *client, Channel *channel, Membership *lp, const char **msg, const char **errmsg, SendType sendtype);
int rcmd_can_send_to_user(Client *client, Client *target, const char **text, const char **errmsg, SendType sendtype);
int rcmd_can_join(Client *client, Channel *channel, const char *key, char **errmsg);
int rcmd_block_message(Client *client, const char *text, SendType sendtype, const char **errmsg, const char *display, const char *conftag);
int rcmd_block_join(Client *client, const char **errmsg);
CMD_OVERRIDE_FUNC(rcmd_override);
// Globals
@@ -58,6 +60,7 @@ CmdMap conf_cmdmaps[] = {
// These are special cases in which we can't override the command, so they are handled through hooks instead
{ "channel-message", "PRIVMSG" },
{ "channel-notice", "NOTICE" },
{ "channel-create", "JOIN" },
{ "private-message", "PRIVMSG" },
{ "private-notice", "NOTICE" },
{ NULL, NULL, }, // REQUIRED for the loop to properly work
@@ -78,6 +81,8 @@ MOD_INIT()
// Due to the nature of PRIVMSG/NOTICE we're gonna need to hook into PRE_* stuff instead of using command overrides
HookAdd(modinfo->handle, HOOKTYPE_CAN_SEND_TO_CHANNEL, -1000000, rcmd_can_send_to_channel);
HookAdd(modinfo->handle, HOOKTYPE_CAN_SEND_TO_USER, -1000000, rcmd_can_send_to_user);
// JOIN too
HookAdd(modinfo->handle, HOOKTYPE_CAN_JOIN, 0, rcmd_can_join);
return MOD_SUCCESS;
}
@@ -407,3 +412,49 @@ CMD_OVERRIDE_FUNC(rcmd_override)
// No restrictions apply, process command as normal =]
CALL_NEXT_COMMAND_OVERRIDE();
}
int rcmd_can_join(Client *client, Channel *channel, const char *key, char **errmsg)
{
const char *join_err = NULL;
// If the channel already existed before, no restriction
if (channel->users || has_channel_mode(channel, 'P'))
return 0;
else if (rcmd_block_join(client, &join_err))
{
static char formatted_errmsg[512];
snprintf(formatted_errmsg, sizeof(formatted_errmsg), "JOIN :%s", join_err);
*errmsg = formatted_errmsg;
return ERR_CANNOTDOCOMMAND;
}
return 0;
}
int rcmd_block_join(Client *client, const char **errmsg)
{
RestrictedCommand *rcmd;
static char errbuf[256];
if (!MyUser(client) || !client->local || IsOper(client) || IsULine(client))
return 0;
rcmd = find_restrictions_byconftag("channel-create");
if (rcmd && !rcmd_canbypass(client, rcmd))
{
if (rcmd->except->connect_time)
{
ircsnprintf(errbuf, sizeof(errbuf),
"You cannot create new channels until you have been connected for %ld seconds or more.", rcmd->except->connect_time);
} else {
ircsnprintf(errbuf, sizeof(errbuf),
"Creation of new channels has been restricted by the network administrator.");
}
*errmsg = errbuf;
return 1;
}
return 0;
}