mirror of
https://github.com/matrix-construct/construct
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340 lines
8.9 KiB
C
340 lines
8.9 KiB
C
/*
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* charybdis: A slightly useful ircd.
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* supported.c: isupport (005) numeric
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*
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* Copyright (C) 2006 Jilles Tjoelker
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2.Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: supported.c 3568 2007-09-09 18:59:08Z jilles $
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*/
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/* From the old supported.h which is
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2004 ircd-ratbox development team
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*/
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/*
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* - from mirc's versions.txt
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*
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* mIRC now supports the numeric 005 tokens: CHANTYPES=# and
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* PREFIX=(ohv)@%+ and can handle a dynamic set of channel and
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* nick prefixes.
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*
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* mIRC assumes that @ is supported on all networks, any mode
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* left of @ is assumed to have at least equal power to @, and
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* any mode right of @ has less power.
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*
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* mIRC has internal support for @%+ modes.
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*
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* $nick() can now handle all mode letters listed in PREFIX.
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*
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* Also added support for CHANMODES=A,B,C,D token (not currently
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* supported by any servers), which lists all modes supported
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* by a channel, where:
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*
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* A = modes that take a parameter, and add or remove nicks
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* or addresses to a list, such as +bIe for the ban,
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* invite, and exception lists.
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*
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* B = modes that change channel settings, but which take
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* a parameter when they are set and unset, such as
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* +k key, and -k key.
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*
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* C = modes that change channel settings, but which take
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* a parameter only when they are set, such as +l N,
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* and -l.
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*
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* D = modes that change channel settings, such as +imnpst
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* and take no parameters.
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*
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* All unknown/unlisted modes are treated as type D.
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*/
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#include "stdinc.h"
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#include "client.h"
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#include "common.h"
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#include "numeric.h"
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#include "ircd.h"
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#include "s_conf.h"
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#include "s_user.h"
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#include "supported.h"
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#include "chmode.h"
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#include "send.h"
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rb_dlink_list isupportlist;
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struct isupportitem
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{
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const char *name;
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const char *(*func)(const void *);
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const void *param;
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rb_dlink_node node;
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};
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void
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add_isupport(const char *name, const char *(*func)(const void *), const void *param)
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{
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struct isupportitem *item;
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item = rb_malloc(sizeof(struct isupportitem));
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item->name = name;
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item->func = func;
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item->param = param;
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rb_dlinkAddTail(item, &item->node, &isupportlist);
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}
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const void *
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change_isupport(const char *name, const char *(*func)(const void *), const void *param)
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{
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rb_dlink_node *ptr;
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struct isupportitem *item;
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const void *oldvalue = NULL;
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RB_DLINK_FOREACH(ptr, isupportlist.head)
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{
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item = ptr->data;
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if (!strcmp(item->name, name))
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{
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oldvalue = item->param;
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// item->name = name;
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item->func = func;
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item->param = param;
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break;
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}
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}
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return oldvalue;
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}
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void
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delete_isupport(const char *name)
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{
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rb_dlink_node *ptr, *next_ptr;
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struct isupportitem *item;
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RB_DLINK_FOREACH_SAFE(ptr, next_ptr, isupportlist.head)
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{
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item = ptr->data;
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if (!strcmp(item->name, name))
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{
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rb_dlinkDelete(ptr, &isupportlist);
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rb_free(item);
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}
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}
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}
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/* XXX caching? */
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void
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show_isupport(struct Client *client_p)
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{
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rb_dlink_node *ptr;
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struct isupportitem *item;
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const char *value;
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char buf[512];
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int extra_space;
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unsigned int nchars, nparams;
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int l;
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extra_space = strlen(client_p->name);
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/* UID */
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if (!MyClient(client_p) && extra_space < 9)
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extra_space = 9;
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/* :<me.name> 005 <nick> <params> :are supported by this server */
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/* form_str(RPL_ISUPPORT) is %s :are supported by this server */
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extra_space += strlen(me.name) + 1 + strlen(form_str(RPL_ISUPPORT));
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nchars = extra_space, nparams = 0, buf[0] = '\0';
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RB_DLINK_FOREACH(ptr, isupportlist.head)
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{
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item = ptr->data;
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value = (*item->func)(item->param);
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if (value == NULL)
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continue;
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l = strlen(item->name) + (EmptyString(value) ? 0 : 1 + strlen(value));
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if (nchars + l + (nparams > 0) >= sizeof buf || nparams + 1 > 12)
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{
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sendto_one_numeric(client_p, RPL_ISUPPORT, form_str(RPL_ISUPPORT), buf);
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nchars = extra_space, nparams = 0, buf[0] = '\0';
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}
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if (nparams > 0)
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rb_strlcat(buf, " ", sizeof buf), nchars++;
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rb_strlcat(buf, item->name, sizeof buf);
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if (!EmptyString(value))
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{
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rb_strlcat(buf, "=", sizeof buf);
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rb_strlcat(buf, value, sizeof buf);
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}
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nchars += l;
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nparams++;
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}
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if (nparams > 0)
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sendto_one_numeric(client_p, RPL_ISUPPORT, form_str(RPL_ISUPPORT), buf);
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}
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const char *
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isupport_intptr(const void *ptr)
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{
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static char buf[15];
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rb_snprintf(buf, sizeof buf, "%d", *(const int *)ptr);
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return buf;
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}
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const char *
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isupport_boolean(const void *ptr)
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{
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return *(const int *)ptr ? "" : NULL;
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}
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const char *
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isupport_string(const void *ptr)
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{
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return (const char *)ptr;
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}
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const char *
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isupport_stringptr(const void *ptr)
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{
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return *(char * const *)ptr;
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}
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static const char *
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isupport_umode(const void *ptr)
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{
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const char *str;
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str = ptr;
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return ConfigFileEntry.oper_only_umodes &
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user_modes[(unsigned char)*str] ? NULL : str;
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}
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static const char *
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isupport_chanmodes(const void *ptr)
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{
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static char result[80];
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rb_snprintf(result, sizeof result, "%s%sbq,k,%slj,%s",
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ConfigChannel.use_except ? "e" : "",
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ConfigChannel.use_invex ? "I" : "",
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ConfigChannel.use_forward ? "f" : "",
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cflagsbuf);
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return result;
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}
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static const char *
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isupport_chantypes(const void *ptr)
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{
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return ConfigChannel.disable_local_channels ? "#" : "&#";
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}
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static const char *
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isupport_chanlimit(const void *ptr)
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{
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static char result[30];
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rb_snprintf(result, sizeof result, "%s:%i",
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ConfigChannel.disable_local_channels ? "#" : "&#", ConfigChannel.max_chans_per_user);
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return result;
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}
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static const char *
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isupport_maxlist(const void *ptr)
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{
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static char result[30];
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rb_snprintf(result, sizeof result, "bq%s%s:%i",
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ConfigChannel.use_except ? "e" : "",
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ConfigChannel.use_invex ? "I" : "",
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ConfigChannel.max_bans);
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return result;
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}
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static const char *
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isupport_targmax(const void *ptr)
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{
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static char result[200];
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rb_snprintf(result, sizeof result, "NAMES:1,LIST:1,KICK:1,WHOIS:1,PRIVMSG:%d,NOTICE:%d,ACCEPT:,MONITOR:",
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ConfigFileEntry.max_targets,
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ConfigFileEntry.max_targets);
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return result;
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}
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static const char *
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isupport_extban(const void *ptr)
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{
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const char *p;
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static char result[200];
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p = get_extban_string();
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if (EmptyString(p))
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return NULL;
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rb_snprintf(result, sizeof result, "$,%s", p);
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return result;
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}
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static const char *
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isupport_nicklen(const void *ptr)
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{
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static char result[200];
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rb_snprintf(result, sizeof result, "%u", ConfigFileEntry.nicklen - 1);
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return result;
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}
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void
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init_isupport(void)
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{
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static int maxmodes = MAXMODEPARAMS;
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static int channellen = LOC_CHANNELLEN;
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static int topiclen = TOPICLEN;
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static int maxnicklen = NICKLEN - 1;
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add_isupport("CHANTYPES", isupport_chantypes, NULL);
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add_isupport("EXCEPTS", isupport_boolean, &ConfigChannel.use_except);
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add_isupport("INVEX", isupport_boolean, &ConfigChannel.use_invex);
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add_isupport("CHANMODES", isupport_chanmodes, NULL);
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add_isupport("CHANLIMIT", isupport_chanlimit, NULL);
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add_isupport("PREFIX", isupport_string, "(ov)@+");
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add_isupport("MAXLIST", isupport_maxlist, NULL);
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add_isupport("MODES", isupport_intptr, &maxmodes);
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add_isupport("NETWORK", isupport_stringptr, &ServerInfo.network_name);
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add_isupport("STATUSMSG", isupport_string, "@+");
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add_isupport("CALLERID", isupport_umode, "g");
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add_isupport("CASEMAPPING", isupport_string, "rfc1459");
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add_isupport("NICKLEN", isupport_nicklen, NULL);
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add_isupport("MAXNICKLEN", isupport_intptr, &maxnicklen);
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add_isupport("CHANNELLEN", isupport_intptr, &channellen);
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add_isupport("TOPICLEN", isupport_intptr, &topiclen);
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add_isupport("DEAF", isupport_umode, "D");
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add_isupport("TARGMAX", isupport_targmax, NULL);
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add_isupport("EXTBAN", isupport_extban, NULL);
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add_isupport("CLIENTVER", isupport_string, "3.0");
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}
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