mirror of
https://github.com/unrealircd/unrealircd.git
synced 2026-06-25 08:16:37 +02:00
Bram Matthys
fffd459bf9
I suppose what is and what is not an API can be considered a bit arbitrary but for us it is the stuff we expose via the module api. We now have: api-clicap api-command api-event api-extbans api-extcmodes api-history-backend api-isupport api-mtag api-umodes
444 lines
12 KiB
C
444 lines
12 KiB
C
/************************************************************************
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* IRC - Internet Relay Chat, extcmodes.c
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* (C) 2003-2007 Bram Matthys (Syzop) and the UnrealIRCd Team
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*
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* See file AUTHORS in IRC package for additional names of
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* the programmers.
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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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/* Channel parameter to slot# mapping */
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MODVAR unsigned char param_to_slot_mapping[256];
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extern void make_cmodestr(void);
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char extchmstr[4][64];
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Cmode *Channelmode_Table = NULL;
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unsigned short Channelmode_highest = 0;
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Cmode *ParamTable[MAXPARAMMODES+1];
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void make_extcmodestr()
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{
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char *p;
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int i;
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extchmstr[0][0] = extchmstr[1][0] = extchmstr[2][0] = extchmstr[3][0] = '\0';
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/* type 1: lists (like b/e) */
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/* [NOT IMPLEMENTED IN EXTCMODES] */
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/* type 2: 1 par to set/unset (has .unset_with_param) */
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p = extchmstr[1];
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for (i=0; i <= Channelmode_highest; i++)
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if (Channelmode_Table[i].paracount && Channelmode_Table[i].flag &&
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Channelmode_Table[i].unset_with_param)
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*p++ = Channelmode_Table[i].flag;
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*p = '\0';
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/* type 3: 1 param to set, 0 params to unset (does not have .unset_with_param) */
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p = extchmstr[2];
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for (i=0; i <= Channelmode_highest; i++)
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if (Channelmode_Table[i].paracount && Channelmode_Table[i].flag &&
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!Channelmode_Table[i].unset_with_param)
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*p++ = Channelmode_Table[i].flag;
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*p = '\0';
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/* type 4: paramless modes */
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p = extchmstr[3];
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for (i=0; i <= Channelmode_highest; i++)
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if (!Channelmode_Table[i].paracount && Channelmode_Table[i].flag)
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*p++ = Channelmode_Table[i].flag;
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*p = '\0';
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}
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static char previous_chanmodes[256];
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void extcmodes_check_for_changes(void)
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{
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char chanmodes[256];
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Isupport *isup;
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make_cmodestr();
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make_extcmodestr();
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snprintf(chanmodes, sizeof(chanmodes), "%s%s", CHPAR1, EXPAR1);
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safestrdup(me.serv->features.chanmodes[0], chanmodes);
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snprintf(chanmodes, sizeof(chanmodes), "%s%s", CHPAR2, EXPAR2);
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safestrdup(me.serv->features.chanmodes[1], chanmodes);
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snprintf(chanmodes, sizeof(chanmodes), "%s%s", CHPAR3, EXPAR3);
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safestrdup(me.serv->features.chanmodes[2], chanmodes);
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snprintf(chanmodes, sizeof(chanmodes), "%s%s", CHPAR4, EXPAR4);
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safestrdup(me.serv->features.chanmodes[3], chanmodes);
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ircsnprintf(chanmodes, sizeof(chanmodes), "%s,%s,%s,%s",
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me.serv->features.chanmodes[0],
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me.serv->features.chanmodes[1],
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me.serv->features.chanmodes[2],
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me.serv->features.chanmodes[3]);
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isup = IsupportFind("CHANMODES");
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if (!isup)
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{
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strlcpy(previous_chanmodes, chanmodes, sizeof(previous_chanmodes));
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return; /* not booted yet. then we are done here. */
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}
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IsupportSetValue(isup, chanmodes);
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if (*previous_chanmodes && strcmp(chanmodes, previous_chanmodes))
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{
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ircd_log(LOG_ERROR, "Channel modes changed at runtime: %s -> %s",
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previous_chanmodes, chanmodes);
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sendto_realops("Channel modes changed at runtime: %s -> %s",
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previous_chanmodes, chanmodes);
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/* Broadcast change to all (locally connected) servers */
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sendto_server(&me, 0, 0, NULL, "PROTOCTL CHANMODES=%s", chanmodes);
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}
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strlcpy(previous_chanmodes, chanmodes, sizeof(previous_chanmodes));
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}
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void extcmode_init(void)
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{
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Cmode_t val = 1;
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int i;
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Channelmode_Table = MyMallocEx(sizeof(Cmode) * EXTCMODETABLESZ);
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for (i = 0; i < EXTCMODETABLESZ; i++)
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{
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Channelmode_Table[i].mode = val;
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val *= 2;
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}
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Channelmode_highest = 0;
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memset(&extchmstr, 0, sizeof(extchmstr));
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memset(¶m_to_slot_mapping, 0, sizeof(param_to_slot_mapping));
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*previous_chanmodes = '\0';
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}
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/* Update letter->slot mapping and slot->handler mapping */
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void extcmode_para_addslot(Cmode *c, int slot)
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{
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if ((slot < 0) || (slot > MAXPARAMMODES))
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abort();
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c->slot = slot;
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ParamTable[slot] = c;
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param_to_slot_mapping[c->flag] = slot;
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}
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/* Update letter->slot mapping and slot->handler mapping */
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void extcmode_para_delslot(Cmode *c, int slot)
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{
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if ((slot < 0) || (slot > MAXPARAMMODES))
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abort();
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ParamTable[slot] = NULL;
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param_to_slot_mapping[c->flag] = 0;
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}
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Cmode *CmodeAdd(Module *module, CmodeInfo req, Cmode_t *mode)
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{
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short i = 0, j = 0;
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int paraslot = -1;
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int existing = 0;
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while (i < EXTCMODETABLESZ)
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{
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if (!Channelmode_Table[i].flag)
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break;
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else if (Channelmode_Table[i].flag == req.flag)
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{
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if (Channelmode_Table[i].unloaded)
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{
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Channelmode_Table[i].unloaded = 0;
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existing = 1;
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break;
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} else {
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if (module)
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module->errorcode = MODERR_EXISTS;
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return NULL;
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}
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}
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i++;
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}
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if (i == EXTCMODETABLESZ)
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{
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Debug((DEBUG_DEBUG, "CmodeAdd failed, no space"));
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if (module)
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module->errorcode = MODERR_NOSPACE;
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return NULL;
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}
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if (req.paracount == 1)
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{
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if (existing)
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{
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/* Re-use parameter slot of the module with the same modechar that is unloading */
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paraslot = Channelmode_Table[i].slot;
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}
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else
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{
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/* Allocate a new one */
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for (paraslot = 0; ParamTable[paraslot]; paraslot++)
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{
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if (paraslot == MAXPARAMMODES - 1)
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{
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Debug((DEBUG_DEBUG, "CmodeAdd failed, no space for parameter"));
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if (module)
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module->errorcode = MODERR_NOSPACE;
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return NULL;
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}
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}
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}
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}
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*mode = Channelmode_Table[i].mode;
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/* Update extended channel mode table highest */
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Channelmode_Table[i].flag = req.flag;
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Channelmode_Table[i].paracount = req.paracount;
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Channelmode_Table[i].is_ok = req.is_ok;
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Channelmode_Table[i].put_param = req.put_param;
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Channelmode_Table[i].get_param = req.get_param;
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Channelmode_Table[i].conv_param = req.conv_param;
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Channelmode_Table[i].free_param = req.free_param;
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Channelmode_Table[i].dup_struct = req.dup_struct;
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Channelmode_Table[i].sjoin_check = req.sjoin_check;
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Channelmode_Table[i].local = req.local;
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Channelmode_Table[i].unset_with_param = req.unset_with_param;
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Channelmode_Table[i].owner = module;
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Channelmode_Table[i].unloaded = 0;
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for (j = 0; j < EXTCMODETABLESZ; j++)
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if (Channelmode_Table[j].flag)
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if (j > Channelmode_highest)
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Channelmode_highest = j;
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if (Channelmode_Table[i].paracount == 1)
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extcmode_para_addslot(&Channelmode_Table[i], paraslot);
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if (module)
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{
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ModuleObject *cmodeobj = MyMallocEx(sizeof(ModuleObject));
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cmodeobj->object.cmode = &Channelmode_Table[i];
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cmodeobj->type = MOBJ_CMODE;
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AddListItem(cmodeobj, module->objects);
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module->errorcode = MODERR_NOERROR;
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}
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return &(Channelmode_Table[i]);
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}
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void unload_extcmode_commit(Cmode *cmode)
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{
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aChannel *chptr;
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if (!cmode)
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return;
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/* Unset channel mode and send MODE to everyone */
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if (cmode->paracount == 0)
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{
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/* Paramless mode, easy */
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for (chptr = channel; chptr; chptr = chptr->nextch)
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{
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if (chptr->mode.extmode && cmode->mode)
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{
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MessageTag *mtags = NULL;
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new_message(&me, NULL, &mtags);
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sendto_channel(chptr, &me, NULL, 0, 0, SEND_LOCAL, mtags,
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":%s MODE %s -%c",
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me.name, chptr->chname, cmode->flag);
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sendto_server(NULL, 0, 0, mtags,
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":%s MODE %s -%c 0",
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me.name, chptr->chname, cmode->flag);
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free_message_tags(mtags);
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chptr->mode.extmode &= ~cmode->mode;
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}
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}
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} else
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{
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/* Parameter mode, more complicated */
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for (chptr = channel; chptr; chptr = chptr->nextch)
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{
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if (chptr->mode.extmode && cmode->mode)
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{
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MessageTag *mtags = NULL;
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new_message(&me, NULL, &mtags);
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if (cmode->unset_with_param)
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{
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char *param = cmode->get_param(GETPARASTRUCT(chptr, cmode->flag));
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sendto_channel(chptr, &me, NULL, 0, 0, SEND_LOCAL, mtags,
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":%s MODE %s -%c %s",
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me.name, chptr->chname, cmode->flag, param);
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sendto_server(NULL, 0, 0, mtags,
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":%s MODE %s -%c %s 0",
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me.name, chptr->chname, cmode->flag, param);
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} else {
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sendto_channel(chptr, &me, NULL, 0, 0, SEND_LOCAL, mtags,
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":%s MODE %s -%c",
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me.name, chptr->chname, cmode->flag);
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sendto_server(NULL, 0, 0, mtags,
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":%s MODE %s -%c 0",
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me.name, chptr->chname, cmode->flag);
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}
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free_message_tags(mtags);
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cmode->free_param(GETPARASTRUCT(chptr, cmode->flag));
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chptr->mode.extmode &= ~cmode->mode;
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}
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}
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}
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cmode->flag = '\0';
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extcmode_para_delslot(cmode, cmode->slot);
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}
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void CmodeDel(Cmode *cmode)
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{
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if (loop.ircd_rehashing)
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cmode->unloaded = 1;
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else
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unload_extcmode_commit(cmode);
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if (cmode->owner)
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{
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ModuleObject *cmodeobj;
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for (cmodeobj = cmode->owner->objects; cmodeobj; cmodeobj = cmodeobj->next) {
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if (cmodeobj->type == MOBJ_CMODE && cmodeobj->object.cmode == cmode) {
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DelListItem(cmodeobj, cmode->owner->objects);
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MyFree(cmodeobj);
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break;
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}
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}
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cmode->owner = NULL;
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}
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}
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void unload_all_unused_extcmodes(void)
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{
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int i;
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for (i = 0; i < EXTCMODETABLESZ; i++)
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if (Channelmode_Table[i].flag && Channelmode_Table[i].unloaded)
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{
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unload_extcmode_commit(&Channelmode_Table[i]);
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}
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}
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void extcmode_duplicate_paramlist(void **xi, void **xo)
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{
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int i;
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Cmode *handler;
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void *inx;
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for (i = 0; i < MAXPARAMMODES; i++)
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{
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handler = CMP_GETHANDLERBYSLOT(i);
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if (!handler)
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continue; /* nothing there.. */
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inx = xi[handler->slot]; /* paramter data of input is here */
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if (!inx)
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continue; /* not set */
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xo[handler->slot] = handler->dup_struct(inx); /* call dup_struct with that input and set the output param to that */
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}
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}
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void extcmode_free_paramlist(void **ar)
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{
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int i;
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Cmode *handler;
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for (i = 0; i < MAXPARAMMODES; i++)
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{
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handler = GETPARAMHANDLERBYSLOT(i);
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if (!handler)
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continue; /* nothing here... */
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handler->free_param(ar[handler->slot]);
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ar[handler->slot] = NULL;
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}
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}
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char *cm_getparameter(aChannel *chptr, char mode)
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{
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return GETPARAMHANDLERBYLETTER(mode)->get_param(GETPARASTRUCT(chptr, mode));
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}
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void cm_putparameter(aChannel *chptr, char mode, char *str)
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{
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GETPARASTRUCT(chptr, mode) = GETPARAMHANDLERBYLETTER(mode)->put_param(GETPARASTRUCT(chptr, mode), str);
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}
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void cm_freeparameter(aChannel *chptr, char mode)
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{
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GETPARAMHANDLERBYLETTER(mode)->free_param(GETPARASTRUCT(chptr, mode));
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GETPARASTRUCT(chptr, mode) = NULL;
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}
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char *cm_getparameter_ex(void **p, char mode)
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{
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return GETPARAMHANDLERBYLETTER(mode)->get_param(GETPARASTRUCTEX(p, mode));
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}
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void cm_putparameter_ex(void **p, char mode, char *str)
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{
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GETPARASTRUCTEX(p, mode) = GETPARAMHANDLERBYLETTER(mode)->put_param(GETPARASTRUCTEX(p, mode), str);
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}
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void cm_freeparameter_ex(void **p, char mode, char *str)
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{
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GETPARAMHANDLERBYLETTER(mode)->free_param(GETPARASTRUCTEX(p, mode));
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GETPARASTRUCTEX(p, mode) = NULL;
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}
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int extcmode_default_requirechop(aClient *cptr, aChannel *chptr, char mode, char *para, int checkt, int what)
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{
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if (IsPerson(cptr) && is_chan_op(cptr, chptr))
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return EX_ALLOW;
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if (checkt == EXCHK_ACCESS_ERR) /* can only be due to being halfop */
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sendnumeric(cptr, ERR_NOTFORHALFOPS, mode);
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return EX_DENY;
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}
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int extcmode_default_requirehalfop(aClient *cptr, aChannel *chptr, char mode, char *para, int checkt, int what)
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{
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if (IsPerson(cptr) &&
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(is_chan_op(cptr, chptr) || is_half_op(cptr, chptr)))
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return EX_ALLOW;
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return EX_DENY;
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}
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int module_has_extcmode_param_mode(Module *mod)
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{
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int i = 0;
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while (i < EXTCMODETABLESZ)
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{
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if ((Channelmode_Table[i].flag) &&
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(Channelmode_Table[i].owner == mod) &&
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(Channelmode_Table[i].paracount))
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{
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return 1;
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}
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i++;
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}
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return 0;
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}
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