2007-01-25 07:40:21 +01:00
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/* modules/m_cap.c
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2014-03-03 05:25:47 +01:00
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*
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2007-01-25 07:40:21 +01:00
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* Copyright (C) 2005 Lee Hardy <lee@leeh.co.uk>
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* Copyright (C) 2005 ircd-ratbox development team
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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: m_cap.c 676 2006-02-03 20:05:09Z gxti $
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*/
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#include "stdinc.h"
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#include "class.h"
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#include "client.h"
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2008-04-20 07:47:38 +02:00
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#include "match.h"
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2007-01-25 07:40:21 +01:00
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#include "ircd.h"
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#include "numeric.h"
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#include "msg.h"
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#include "parse.h"
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#include "modules.h"
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#include "s_serv.h"
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#include "s_user.h"
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2013-09-10 07:35:56 +02:00
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#include "send.h"
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2015-03-01 09:59:27 +01:00
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#include "s_conf.h"
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2015-03-01 15:00:52 +01:00
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#include "hash.h"
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2007-01-25 07:40:21 +01:00
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typedef int (*bqcmp)(const void *, const void *);
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2016-02-11 03:54:17 +01:00
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static int m_cap(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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2007-01-25 07:40:21 +01:00
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static int modinit(void);
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struct Message cap_msgtab = {
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2016-02-19 23:42:40 +01:00
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"CAP", 0, 0, 0, 0,
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2007-01-25 07:40:21 +01:00
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{{m_cap, 2}, {m_cap, 2}, mg_ignore, mg_ignore, mg_ignore, {m_cap, 2}}
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};
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mapi_clist_av1 cap_clist[] = { &cap_msgtab, NULL };
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DECLARE_MODULE_AV1(cap, modinit, NULL, cap_clist, NULL, NULL, "$Revision: 676 $");
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2015-02-16 00:01:35 +01:00
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#define _CLICAP(name, capserv, capclient, caprequired, flags) \
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{ (name), (capserv), (capclient), (caprequired), (flags), sizeof(name) - 1 }
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2007-01-25 07:40:21 +01:00
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#define CLICAP_FLAGS_STICKY 0x001
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static struct clicap
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{
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const char *name;
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int cap_serv; /* for altering s->c */
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int cap_cli; /* for altering c->s */
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2015-02-16 00:01:35 +01:00
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int cap_required_serv; /* required dependency cap */
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2007-01-25 07:40:21 +01:00
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int flags;
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int namelen;
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} clicap_list[] = {
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2015-02-16 00:01:35 +01:00
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_CLICAP("multi-prefix", CLICAP_MULTI_PREFIX, 0, 0, 0),
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2015-03-10 14:21:46 +01:00
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_CLICAP("sasl", CLICAP_SASL, 0, 0, CLICAP_FLAGS_STICKY),
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2015-02-16 00:01:35 +01:00
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_CLICAP("account-notify", CLICAP_ACCOUNT_NOTIFY, 0, 0, 0),
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_CLICAP("extended-join", CLICAP_EXTENDED_JOIN, 0, 0, 0),
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_CLICAP("away-notify", CLICAP_AWAY_NOTIFY, 0, 0, 0),
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_CLICAP("tls", CLICAP_TLS, 0, 0, 0),
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2015-02-28 08:06:38 +01:00
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_CLICAP("userhost-in-names", CLICAP_USERHOST_IN_NAMES, 0, 0, 0),
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2015-03-01 07:26:23 +01:00
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_CLICAP("cap-notify", CLICAP_CAP_NOTIFY, 0, 0, 0),
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2015-11-20 05:53:55 +01:00
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_CLICAP("chghost", CLICAP_CHGHOST, 0, 0, 0),
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2016-02-21 00:26:35 +01:00
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_CLICAP("account-tag", CLICAP_ACCOUNT_TAG, 0, 0, 0),
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2007-01-25 07:40:21 +01:00
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};
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#define CLICAP_LIST_LEN (sizeof(clicap_list) / sizeof(struct clicap))
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static int clicap_sort(struct clicap *, struct clicap *);
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static int
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modinit(void)
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{
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qsort(clicap_list, CLICAP_LIST_LEN, sizeof(struct clicap),
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(bqcmp) clicap_sort);
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return 0;
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}
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static int
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clicap_sort(struct clicap *one, struct clicap *two)
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{
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return irccmp(one->name, two->name);
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}
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static int
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clicap_compare(const char *name, struct clicap *cap)
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{
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return irccmp(name, cap->name);
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}
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/* clicap_find()
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* Used iteratively over a buffer, extracts individual cap tokens.
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*
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* Inputs: buffer to start iterating over (NULL to iterate over existing buf)
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* int pointer to whether the cap token is negated
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* int pointer to whether we finish with success
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* Ouputs: Cap entry if found, NULL otherwise.
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*/
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static struct clicap *
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clicap_find(const char *data, int *negate, int *finished)
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{
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static char buf[BUFSIZE];
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static char *p;
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struct clicap *cap;
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char *s;
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*negate = 0;
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if(data)
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{
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2008-04-20 06:40:40 +02:00
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rb_strlcpy(buf, data, sizeof(buf));
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2007-01-25 07:40:21 +01:00
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p = buf;
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}
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if(*finished)
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return NULL;
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/* skip any whitespace */
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while(*p && IsSpace(*p))
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p++;
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if(EmptyString(p))
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{
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*finished = 1;
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return NULL;
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}
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if(*p == '-')
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{
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*negate = 1;
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p++;
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/* someone sent a '-' without a parameter.. */
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if(*p == '\0')
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return NULL;
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}
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if((s = strchr(p, ' ')))
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*s++ = '\0';
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2014-03-03 05:25:47 +01:00
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if((cap = bsearch(p, clicap_list, CLICAP_LIST_LEN,
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2007-01-25 07:40:21 +01:00
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sizeof(struct clicap), (bqcmp) clicap_compare)))
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{
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if(s)
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p = s;
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else
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*finished = 1;
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}
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return cap;
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}
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/* clicap_generate()
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* Generates a list of capabilities.
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*
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* Inputs: client to send to, subcmd to send,
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* flags to match against: 0 to do none, -1 if client has no flags,
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* int to whether we are doing CAP CLEAR
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* Outputs: None
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*/
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static void
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clicap_generate(struct Client *source_p, const char *subcmd, int flags, int clear)
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{
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char buf[BUFSIZE];
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char capbuf[BUFSIZE];
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char *p;
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int buflen = 0;
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int curlen, mlen;
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2010-03-16 19:13:09 +01:00
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size_t i;
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2007-01-25 07:40:21 +01:00
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2016-02-10 02:25:32 +01:00
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mlen = sprintf(buf, ":%s CAP %s %s",
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2014-03-03 05:25:47 +01:00
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me.name,
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EmptyString(source_p->name) ? "*" : source_p->name,
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2007-01-25 07:40:21 +01:00
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subcmd);
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p = capbuf;
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buflen = mlen;
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/* shortcut, nothing to do */
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if(flags == -1)
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{
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sendto_one(source_p, "%s :", buf);
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return;
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}
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for(i = 0; i < CLICAP_LIST_LEN; i++)
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{
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if(flags)
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{
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if(!IsCapable(source_p, clicap_list[i].cap_serv))
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continue;
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/* they are capable of this, check sticky */
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else if(clear && clicap_list[i].flags & CLICAP_FLAGS_STICKY)
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continue;
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}
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2015-03-01 09:59:27 +01:00
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if (clicap_list[i].cap_serv == CLICAP_SASL)
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{
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struct Client *agent_p = NULL;
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if (!ConfigFileEntry.sasl_service)
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continue;
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agent_p = find_named_client(ConfigFileEntry.sasl_service);
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if (agent_p == NULL || !IsService(agent_p))
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continue;
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}
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2007-01-25 07:40:21 +01:00
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/* \r\n\0, possible "-~=", space, " *" */
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if(buflen + clicap_list[i].namelen >= BUFSIZE - 10)
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{
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/* remove our trailing space -- if buflen == mlen
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* here, we didnt even succeed in adding one.
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*/
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if(buflen != mlen)
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*(p - 1) = '\0';
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else
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*p = '\0';
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sendto_one(source_p, "%s * :%s", buf, capbuf);
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p = capbuf;
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buflen = mlen;
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}
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if(clear)
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{
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*p++ = '-';
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buflen++;
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}
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2016-02-10 02:25:32 +01:00
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curlen = sprintf(p, "%s ", clicap_list[i].name);
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2007-01-25 07:40:21 +01:00
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p += curlen;
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buflen += curlen;
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}
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/* remove trailing space */
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if(buflen != mlen)
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*(p - 1) = '\0';
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else
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*p = '\0';
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sendto_one(source_p, "%s :%s", buf, capbuf);
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}
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static void
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cap_ack(struct Client *source_p, const char *arg)
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{
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struct clicap *cap;
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int capadd = 0, capdel = 0;
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int finished = 0, negate;
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if(EmptyString(arg))
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return;
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for(cap = clicap_find(arg, &negate, &finished); cap;
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cap = clicap_find(NULL, &negate, &finished))
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{
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/* sent an ACK for something they havent REQd */
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if(!IsCapable(source_p, cap->cap_serv))
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continue;
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if(negate)
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{
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/* dont let them ack something sticky off */
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if(cap->flags & CLICAP_FLAGS_STICKY)
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continue;
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capdel |= cap->cap_cli;
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}
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else
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capadd |= cap->cap_cli;
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}
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source_p->localClient->caps |= capadd;
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source_p->localClient->caps &= ~capdel;
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}
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static void
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cap_clear(struct Client *source_p, const char *arg)
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{
|
2014-03-03 05:25:47 +01:00
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clicap_generate(source_p, "ACK",
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2007-01-25 07:40:21 +01:00
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source_p->localClient->caps ? source_p->localClient->caps : -1, 1);
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/* XXX - sticky capabs */
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#ifdef CLICAP_STICKY
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source_p->localClient->caps = source_p->localClient->caps & CLICAP_STICKY;
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#else
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source_p->localClient->caps = 0;
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#endif
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}
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static void
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cap_end(struct Client *source_p, const char *arg)
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{
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if(IsRegistered(source_p))
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return;
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|
2007-12-24 20:58:55 +01:00
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source_p->flags &= ~FLAGS_CLICAP;
|
2007-01-25 07:40:21 +01:00
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|
2010-02-23 23:35:58 +01:00
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if(source_p->name[0] && source_p->flags & FLAGS_SENTUSER)
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2007-01-25 07:40:21 +01:00
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{
|
2015-03-06 00:41:51 +01:00
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register_local_user(source_p, source_p);
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2007-01-25 07:40:21 +01:00
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}
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}
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static void
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cap_list(struct Client *source_p, const char *arg)
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{
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/* list of what theyre currently using */
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clicap_generate(source_p, "LIST",
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source_p->localClient->caps ? source_p->localClient->caps : -1, 0);
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}
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static void
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cap_ls(struct Client *source_p, const char *arg)
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{
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|
|
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if(!IsRegistered(source_p))
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2007-12-24 20:58:55 +01:00
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source_p->flags |= FLAGS_CLICAP;
|
2007-01-25 07:40:21 +01:00
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/* list of what we support */
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clicap_generate(source_p, "LS", 0, 0);
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}
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static void
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cap_req(struct Client *source_p, const char *arg)
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|
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{
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char buf[BUFSIZE];
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|
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char pbuf[2][BUFSIZE];
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|
|
|
struct clicap *cap;
|
|
|
|
int buflen, plen;
|
|
|
|
int i = 0;
|
|
|
|
int capadd = 0, capdel = 0;
|
|
|
|
int finished = 0, negate;
|
|
|
|
|
|
|
|
if(!IsRegistered(source_p))
|
2007-12-24 20:58:55 +01:00
|
|
|
source_p->flags |= FLAGS_CLICAP;
|
2007-01-25 07:40:21 +01:00
|
|
|
|
|
|
|
if(EmptyString(arg))
|
|
|
|
return;
|
|
|
|
|
2016-02-10 02:25:32 +01:00
|
|
|
buflen = snprintf(buf, sizeof(buf), ":%s CAP %s ACK",
|
2007-01-25 07:40:21 +01:00
|
|
|
me.name, EmptyString(source_p->name) ? "*" : source_p->name);
|
|
|
|
|
|
|
|
pbuf[0][0] = '\0';
|
|
|
|
plen = 0;
|
|
|
|
|
|
|
|
for(cap = clicap_find(arg, &negate, &finished); cap;
|
|
|
|
cap = clicap_find(NULL, &negate, &finished))
|
|
|
|
{
|
|
|
|
/* filled the first array, but cant send it in case the
|
|
|
|
* request fails. one REQ should never fill more than two
|
|
|
|
* buffers --fl
|
|
|
|
*/
|
|
|
|
if(buflen + plen + cap->namelen + 6 >= BUFSIZE)
|
|
|
|
{
|
|
|
|
pbuf[1][0] = '\0';
|
|
|
|
plen = 0;
|
|
|
|
i = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(negate)
|
|
|
|
{
|
|
|
|
if(cap->flags & CLICAP_FLAGS_STICKY)
|
|
|
|
{
|
|
|
|
finished = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
strcat(pbuf[i], "-");
|
|
|
|
plen++;
|
|
|
|
|
|
|
|
capdel |= cap->cap_serv;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2015-02-16 00:40:20 +01:00
|
|
|
if(cap->cap_required_serv && !((capadd & cap->cap_required_serv) == cap->cap_required_serv || IsCapable(source_p, cap->cap_required_serv)))
|
2015-02-16 00:01:35 +01:00
|
|
|
{
|
|
|
|
finished = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2015-03-01 09:59:27 +01:00
|
|
|
if (cap->cap_serv == CLICAP_SASL)
|
|
|
|
{
|
|
|
|
struct Client *agent_p = NULL;
|
|
|
|
|
|
|
|
if (!ConfigFileEntry.sasl_service)
|
|
|
|
{
|
|
|
|
finished = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
agent_p = find_named_client(ConfigFileEntry.sasl_service);
|
|
|
|
if (agent_p == NULL || !IsService(agent_p))
|
|
|
|
{
|
|
|
|
finished = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-01-25 07:40:21 +01:00
|
|
|
capadd |= cap->cap_serv;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(cap->cap_cli)
|
|
|
|
{
|
|
|
|
strcat(pbuf[i], "~");
|
|
|
|
plen++;
|
|
|
|
}
|
|
|
|
|
|
|
|
strcat(pbuf[i], cap->name);
|
2015-12-28 10:57:17 +01:00
|
|
|
if (!finished) {
|
|
|
|
strcat(pbuf[i], " ");
|
|
|
|
plen += (cap->namelen + 1);
|
|
|
|
}
|
2007-01-25 07:40:21 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if(!finished)
|
|
|
|
{
|
|
|
|
sendto_one(source_p, ":%s CAP %s NAK :%s",
|
|
|
|
me.name, EmptyString(source_p->name) ? "*" : source_p->name, arg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(i)
|
|
|
|
{
|
|
|
|
sendto_one(source_p, "%s * :%s", buf, pbuf[0]);
|
|
|
|
sendto_one(source_p, "%s :%s", buf, pbuf[1]);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
sendto_one(source_p, "%s :%s", buf, pbuf[0]);
|
|
|
|
|
|
|
|
source_p->localClient->caps |= capadd;
|
|
|
|
source_p->localClient->caps &= ~capdel;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct clicap_cmd
|
|
|
|
{
|
|
|
|
const char *cmd;
|
|
|
|
void (*func)(struct Client *source_p, const char *arg);
|
|
|
|
} clicap_cmdlist[] = {
|
|
|
|
/* This list *MUST* be in alphabetical order */
|
|
|
|
{ "ACK", cap_ack },
|
|
|
|
{ "CLEAR", cap_clear },
|
|
|
|
{ "END", cap_end },
|
|
|
|
{ "LIST", cap_list },
|
|
|
|
{ "LS", cap_ls },
|
|
|
|
{ "REQ", cap_req },
|
|
|
|
};
|
|
|
|
|
|
|
|
static int
|
|
|
|
clicap_cmd_search(const char *command, struct clicap_cmd *entry)
|
|
|
|
{
|
|
|
|
return irccmp(command, entry->cmd);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2016-02-11 03:54:17 +01:00
|
|
|
m_cap(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
|
2007-01-25 07:40:21 +01:00
|
|
|
{
|
|
|
|
struct clicap_cmd *cmd;
|
|
|
|
|
|
|
|
if(!(cmd = bsearch(parv[1], clicap_cmdlist,
|
|
|
|
sizeof(clicap_cmdlist) / sizeof(struct clicap_cmd),
|
|
|
|
sizeof(struct clicap_cmd), (bqcmp) clicap_cmd_search)))
|
|
|
|
{
|
|
|
|
sendto_one(source_p, form_str(ERR_INVALIDCAPCMD),
|
2008-03-18 23:47:37 +01:00
|
|
|
me.name, EmptyString(source_p->name) ? "*" : source_p->name,
|
|
|
|
parv[1]);
|
2007-01-25 07:40:21 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
(cmd->func)(source_p, parv[2]);
|
|
|
|
return 0;
|
|
|
|
}
|