mirror of
https://github.com/matrix-construct/construct
synced 2024-11-09 19:41:22 +01:00
9d0a959bb5
* Simplifies the export declarations for module developers. While
MAPI III utilized a flexible key-value vector to eliminate positional
arguments in a header initializer, now the developer simply makes
a list of pointers to what they want to export for injection into
IRCd. Example:
mapi::header IRCD_MODULE
{
"mymod",
"My module adds a command, a hook, and a CLICAP",
&my_cmdtab,
&some_hook,
&clicaptab
};
* Distributes the handlers for items passed to the above vector.
Anyone can add a type-handler to the module system from anywhere in IRCd
(and other modules?) When your type is encountered a handler is called
providing the symbol name to read out of the module. Example in parser.cc:
mods::add_loader<Message>([]
(mod &loading, const std::string &symbol)
{
auto &msg(get<Message>(loading, symbol));
add_command(msg.name, msg);
});
412 lines
10 KiB
C++
412 lines
10 KiB
C++
/*
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* ircd-ratbox: A slightly useful ircd.
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* m_mode.c: Sets a user or channel mode.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development 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 2 of the License, or
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* (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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using namespace ircd;
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static const char mode_desc[] =
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"Provides the MODE and MLOCK client and server commands, and TS6 server-to-server TMODE and BMASK commands";
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static void m_mode(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void ms_mode(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void ms_tmode(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void ms_mlock(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void ms_bmask(struct MsgBuf *, client::client &, client::client &, int, const char **);
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struct Message mode_msgtab = {
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"MODE", 0, 0, 0, 0,
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{mg_unreg, {m_mode, 2}, {m_mode, 3}, {ms_mode, 3}, mg_ignore, {m_mode, 2}}
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};
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struct Message tmode_msgtab = {
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"TMODE", 0, 0, 0, 0,
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{mg_ignore, mg_ignore, {ms_tmode, 4}, {ms_tmode, 4}, mg_ignore, mg_ignore}
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};
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struct Message mlock_msgtab = {
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"MLOCK", 0, 0, 0, 0,
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{mg_ignore, mg_ignore, {ms_mlock, 3}, {ms_mlock, 3}, mg_ignore, mg_ignore}
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};
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struct Message bmask_msgtab = {
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"BMASK", 0, 0, 0, 0,
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{mg_ignore, mg_ignore, mg_ignore, {ms_bmask, 5}, mg_ignore, mg_ignore}
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};
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mapi_clist_av1 mode_clist[] = { &mode_msgtab, &tmode_msgtab, &mlock_msgtab, &bmask_msgtab, NULL };
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DECLARE_MODULE_AV2(mode, NULL, NULL, mode_clist, NULL, NULL, NULL, NULL, mode_desc);
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/*
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* m_mode - MODE command handler
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* parv[1] - channel
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*/
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static void
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m_mode(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *chptr = NULL;
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chan::membership *msptr;
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int n = 2;
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const char *dest;
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int operspy = 0;
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dest = parv[1];
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if(IsOperSpy(&source) && *dest == '!')
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{
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dest++;
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operspy = 1;
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if(EmptyString(dest))
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{
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sendto_one(&source, form_str(ERR_NEEDMOREPARAMS),
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me.name, source.name, "MODE");
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return;
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}
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}
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/* Now, try to find the channel in question */
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if(!rfc1459::is_chan_prefix(*dest))
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{
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/* if here, it has to be a non-channel name */
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user_mode(&client, &source, parc, parv);
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return;
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}
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if(!chan::valid_name(dest))
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{
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sendto_one_numeric(&source, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[1]);
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return;
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}
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chptr = chan::get(dest, std::nothrow);
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if(chptr == NULL)
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{
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sendto_one_numeric(&source, ERR_NOSUCHCHANNEL,
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form_str(ERR_NOSUCHCHANNEL), parv[1]);
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return;
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}
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/* Now know the channel exists */
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if(parc < n + 1)
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{
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// if(operspy)
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// report_operspy(&source, "MODE", chptr->name.c_str());
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sendto_one(&source, form_str(RPL_CHANNELMODEIS),
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me.name, source.name, parv[1],
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operspy ? channel_modes(chptr, &me) : channel_modes(chptr, &source));
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sendto_one(&source, form_str(RPL_CREATIONTIME),
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me.name, source.name, parv[1], chptr->channelts);
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}
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else
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{
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msptr = get(chptr->members, source, std::nothrow);
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/* Finish the flood grace period... */
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if(my(source) && !is_flood_done(source))
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{
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if(!((parc == 3) && (parv[2][0] == 'b' || parv[2][0] == 'q') && (parv[2][1] == '\0')))
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flood_endgrace(&source);
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}
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set_channel_mode(&client, &source, chptr, msptr, parc - n, parv + n);
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}
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}
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static void
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ms_mode(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *chptr;
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chptr = chan::get(parv[1], std::nothrow);
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if(chptr == NULL)
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{
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sendto_one_numeric(&source, ERR_NOSUCHCHANNEL,
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form_str(ERR_NOSUCHCHANNEL), parv[1]);
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return;
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}
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set_channel_mode(&client, &source, chptr, NULL, parc - 2, parv + 2);
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}
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static void
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ms_tmode(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *chptr = NULL;
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chan::membership *msptr;
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/* Now, try to find the channel in question */
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if(!rfc1459::is_chan_prefix(parv[2][0]) || !chan::valid_name(parv[2]))
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{
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sendto_one_numeric(&source, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]);
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return;
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}
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chptr = chan::get(parv[2], std::nothrow);
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if(chptr == NULL)
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{
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sendto_one_numeric(&source, ERR_NOSUCHCHANNEL,
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form_str(ERR_NOSUCHCHANNEL), parv[2]);
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return;
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}
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/* TS is higher, drop it. */
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if(atol(parv[1]) > chptr->channelts)
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return;
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if(is_server(source))
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{
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set_channel_mode(&client, &source, chptr, NULL, parc - 3, parv + 3);
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}
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else
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{
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msptr = get(chptr->members, source, std::nothrow);
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set_channel_mode(&client, &source, chptr, msptr, parc - 3, parv + 3);
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}
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}
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static void
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ms_mlock(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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chan::chan *chptr = NULL;
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/* Now, try to find the channel in question */
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if(!rfc1459::is_chan_prefix(parv[2][0]) || !chan::valid_name(parv[2]))
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{
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sendto_one_numeric(&source, ERR_BADCHANNAME, form_str(ERR_BADCHANNAME), parv[2]);
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return;
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}
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chptr = chan::get(parv[2], std::nothrow);
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if(chptr == NULL)
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{
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sendto_one_numeric(&source, ERR_NOSUCHCHANNEL,
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form_str(ERR_NOSUCHCHANNEL), parv[2]);
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return;
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}
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/* TS is higher, drop it. */
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if(atol(parv[1]) > chptr->channelts)
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return;
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if(is_server(source))
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set_channel_mlock(&client, &source, chptr, parv[3], true);
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}
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static void
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possibly_remove_lower_forward(client::client *fakesource,
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const int &mems,
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chan::chan &chan,
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chan::list &list,
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const int &mchar,
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const char *mask,
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const char *forward)
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{
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for (auto it(begin(list)); it != end(list); ++it)
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{
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const auto &ban(*it);
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if (irccmp(ban.banstr, mask) != 0)
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continue;
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if (ban.forward.size() && irccmp(ban.forward, forward) >= 0)
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continue;
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sendto_channel_local(mems, &chan,
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":%s MODE %s -%c %s%s%s",
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fakesource->name,
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chan.name.c_str(),
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mchar,
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ban.banstr.c_str(),
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ban.forward.size()? "$" : "",
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ban.forward.size()? ban.forward.c_str() : "");
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list.erase(it);
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break;
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}
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}
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static void
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ms_bmask(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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static char modebuf[BUFSIZE];
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static char parabuf[BUFSIZE];
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chan::chan *chptr;
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chan::list *list;
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chan::mode::type mode_type;
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char *s, *forward;
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char *t;
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char *mbuf;
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char *pbuf;
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int mlen;
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int plen = 0;
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int tlen;
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int arglen;
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int modecount = 0;
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int needcap = NOCAPS;
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int mems;
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client::client *fakesource;
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if(!rfc1459::is_chan_prefix(parv[2][0]) || !chan::valid_name(parv[2]))
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return;
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if((chptr = chan::get(parv[2], std::nothrow)) == NULL)
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return;
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/* TS is higher, drop it. */
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if(atol(parv[1]) > chptr->channelts)
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return;
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switch (parv[3][0])
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{
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case 'b':
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mode_type = chan::mode::BAN;
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mems = chan::ALL_MEMBERS;
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break;
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case 'e':
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mode_type = chan::mode::EXCEPTION;
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needcap = CAP_EX;
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mems = chan::ONLY_CHANOPS;
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break;
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case 'I':
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mode_type = chan::mode::INVEX;
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needcap = CAP_IE;
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mems = chan::ONLY_CHANOPS;
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break;
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case 'q':
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mode_type = chan::mode::QUIET;
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mems = chan::ALL_MEMBERS;
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break;
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/* maybe we should just blindly propagate this? */
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default:
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return;
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}
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list = &get(*chptr, mode_type);
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parabuf[0] = '\0';
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s = LOCAL_COPY(parv[4]);
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/* Hide connecting server on netburst -- jilles */
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if (ConfigServerHide.flatten_links && !has_sent_eob(source))
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fakesource = &me;
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else
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fakesource = &source;
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mlen = sprintf(modebuf, ":%s MODE %s +", fakesource->name, chptr->name.c_str());
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mbuf = modebuf + mlen;
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pbuf = parabuf;
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while(*s == ' ')
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s++;
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/* next char isnt a space, point t to the next one */
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if((t = strchr(s, ' ')) != NULL)
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{
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*t++ = '\0';
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/* double spaces will break the parser */
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while(*t == ' ')
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t++;
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}
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/* couldve skipped spaces and got nothing.. */
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while(!EmptyString(s))
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{
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/* ban with a leading ':' -- this will break the protocol */
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if(*s == ':')
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goto nextban;
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tlen = strlen(s);
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/* I dont even want to begin parsing this.. */
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if(tlen > chan::mode::BUFLEN)
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break;
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if((forward = strchr(s+1, '$')) != NULL)
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{
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*forward++ = '\0';
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if(*forward == '\0')
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tlen--, forward = NULL;
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else
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possibly_remove_lower_forward(fakesource,
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mems, *chptr, *list,
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parv[3][0], s, forward);
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}
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if (add(*chptr, mode_type, s, *fakesource, forward))
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{
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/* this new one wont fit.. */
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if(mlen + chan::mode::MAXPARAMS + plen + tlen > BUFSIZE - 5 ||
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modecount >= chan::mode::MAXPARAMS)
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{
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*mbuf = '\0';
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*(pbuf - 1) = '\0';
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sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf);
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mbuf = modebuf + mlen;
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pbuf = parabuf;
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plen = modecount = 0;
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}
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if (forward != NULL)
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forward[-1] = '$';
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*mbuf++ = parv[3][0];
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arglen = sprintf(pbuf, "%s ", s);
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pbuf += arglen;
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plen += arglen;
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modecount++;
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}
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nextban:
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s = t;
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if(s != NULL)
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{
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if((t = strchr(s, ' ')) != NULL)
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{
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*t++ = '\0';
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while(*t == ' ')
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t++;
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}
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}
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}
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if(modecount)
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{
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*mbuf = '\0';
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*(pbuf - 1) = '\0';
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sendto_channel_local(mems, chptr, "%s %s", modebuf, parabuf);
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}
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sendto_server(&client, chptr, CAP_TS6 | needcap, NOCAPS, ":%s BMASK %ld %s %s :%s",
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source.id, (long) chptr->channelts, chptr->name.c_str(), parv[3], parv[4]);
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}
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