393 lines
11 KiB
C
393 lines
11 KiB
C
/*
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* ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
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* m_etrace.c: Gives local opers a trace output with added info.
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*
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* Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
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* Copyright (C) 2002-2005 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_etrace.c 3161 2007-01-25 07:23:01Z nenolod $
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*/
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#include "stdinc.h"
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#include "class.h"
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#include "hook.h"
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#include "client.h"
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#include "hash.h"
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#include "common.h"
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#include "hash.h"
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#include "match.h"
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#include "ircd.h"
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#include "numeric.h"
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#include "s_serv.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "send.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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static int mo_etrace(struct Client *, struct Client *, int, const char **);
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static int me_etrace(struct Client *, struct Client *, int, const char **);
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static int m_chantrace(struct Client *, struct Client *, int, const char **);
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static int mo_masktrace(struct Client *, struct Client *, int, const char **);
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struct Message etrace_msgtab = {
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"ETRACE", 0, 0, 0, MFLG_SLOW,
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{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, {me_etrace, 0}, {mo_etrace, 0}}
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};
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struct Message chantrace_msgtab = {
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"CHANTRACE", 0, 0, 0, MFLG_SLOW,
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{mg_ignore, {m_chantrace, 2}, mg_ignore, mg_ignore, mg_ignore, {m_chantrace, 2}}
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};
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struct Message masktrace_msgtab = {
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"MASKTRACE", 0, 0, 0, MFLG_SLOW,
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{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_masktrace, 2}}
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};
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mapi_clist_av1 etrace_clist[] = { &etrace_msgtab, &chantrace_msgtab, &masktrace_msgtab, NULL };
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DECLARE_MODULE_AV1(etrace, NULL, NULL, etrace_clist, NULL, NULL, "$Revision: 3161 $");
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static void do_etrace(struct Client *source_p, int ipv4, int ipv6);
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static void do_etrace_full(struct Client *source_p);
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static void do_single_etrace(struct Client *source_p, struct Client *target_p);
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static const char *empty_sockhost = "255.255.255.255";
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static const char *spoofed_sockhost = "0";
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/*
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* m_etrace
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* parv[1] = options [or target]
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* parv[2] = [target]
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*/
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static int
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mo_etrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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if(parc > 1 && !EmptyString(parv[1]))
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{
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if(!irccmp(parv[1], "-full"))
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do_etrace_full(source_p);
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#ifdef RB_IPV6
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else if(!irccmp(parv[1], "-v6"))
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do_etrace(source_p, 0, 1);
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else if(!irccmp(parv[1], "-v4"))
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do_etrace(source_p, 1, 0);
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#endif
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else
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{
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struct Client *target_p = find_named_person(parv[1]);
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if(target_p)
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{
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if(!MyClient(target_p))
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sendto_one(target_p, ":%s ENCAP %s ETRACE %s",
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get_id(source_p, target_p),
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target_p->servptr->name,
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get_id(target_p, target_p));
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else
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do_single_etrace(source_p, target_p);
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}
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else
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sendto_one_numeric(source_p, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), parv[1]);
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}
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}
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else
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do_etrace(source_p, 1, 1);
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return 0;
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}
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static int
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me_etrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct Client *target_p;
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if(!IsOper(source_p) || parc < 2 || EmptyString(parv[1]))
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return 0;
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/* we cant etrace remote clients.. we shouldnt even get sent them */
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if((target_p = find_person(parv[1])) && MyClient(target_p))
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do_single_etrace(source_p, target_p);
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE),
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target_p ? target_p->name : parv[1]);
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return 0;
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}
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static void
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do_etrace(struct Client *source_p, int ipv4, int ipv6)
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{
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struct Client *target_p;
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rb_dlink_node *ptr;
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/* report all direct connections */
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RB_DLINK_FOREACH(ptr, lclient_list.head)
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{
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target_p = ptr->data;
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#ifdef RB_IPV6
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if((!ipv4 && target_p->localClient->ip.ss_family == AF_INET) ||
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(!ipv6 && target_p->localClient->ip.ss_family == AF_INET6))
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continue;
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#endif
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sendto_one(source_p, form_str(RPL_ETRACE),
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me.name, source_p->name,
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IsOper(target_p) ? "Oper" : "User",
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get_client_class(target_p),
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target_p->name, target_p->username, target_p->host,
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show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255",
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target_p->info);
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}
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
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}
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static void
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do_etrace_full(struct Client *source_p)
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{
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rb_dlink_node *ptr;
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RB_DLINK_FOREACH(ptr, lclient_list.head)
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{
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do_single_etrace(source_p, ptr->data);
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}
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
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}
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/*
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* do_single_etrace - searches local clients and displays those matching
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* a pattern
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* input - source client, target client
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* output - etrace results
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* side effects - etrace results are displayed
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*/
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static void
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do_single_etrace(struct Client *source_p, struct Client *target_p)
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{
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/* note, we hide fullcaps for spoofed users, as mirc can often
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* advertise its internal ip address in the field --fl
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*/
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if(!show_ip(source_p, target_p))
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sendto_one(source_p, form_str(RPL_ETRACEFULL),
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me.name, source_p->name,
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IsOper(target_p) ? "Oper" : "User",
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get_client_class(target_p),
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target_p->name, target_p->username, target_p->host,
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"255.255.255.255", "<hidden> <hidden>", target_p->info);
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else
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sendto_one(source_p, form_str(RPL_ETRACEFULL),
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me.name, source_p->name,
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IsOper(target_p) ? "Oper" : "User",
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get_client_class(target_p),
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target_p->name, target_p->username,
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target_p->host, target_p->sockhost,
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target_p->localClient->fullcaps, target_p->info);
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}
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static int
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m_chantrace(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct Client *target_p;
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struct Channel *chptr;
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struct membership *msptr;
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const char *sockhost;
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const char *name;
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rb_dlink_node *ptr;
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int operspy = 0;
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name = parv[1];
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if(IsOperSpy(source_p) && parv[1][0] == '!')
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{
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name++;
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operspy = 1;
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if(EmptyString(name))
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{
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sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
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me.name, source_p->name, "CHANTRACE");
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return 0;
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}
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}
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if((chptr = find_channel(name)) == NULL)
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{
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sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL),
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name);
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return 0;
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}
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/* dont report operspys for nonexistant channels. */
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if(operspy)
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report_operspy(source_p, "CHANTRACE", chptr->chname);
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if(!operspy && !IsMember(client_p, chptr))
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{
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sendto_one_numeric(source_p, ERR_NOTONCHANNEL, form_str(ERR_NOTONCHANNEL),
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chptr->chname);
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return 0;
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}
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RB_DLINK_FOREACH(ptr, chptr->members.head)
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{
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msptr = ptr->data;
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target_p = msptr->client_p;
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if(EmptyString(target_p->sockhost))
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sockhost = empty_sockhost;
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else if(!show_ip(source_p, target_p))
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sockhost = spoofed_sockhost;
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else
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sockhost = target_p->sockhost;
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sendto_one(source_p, form_str(RPL_ETRACE),
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me.name, source_p->name,
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IsOper(target_p) ? "Oper" : "User",
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/* class field -- pretend its server.. */
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target_p->servptr->name,
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target_p->name, target_p->username, target_p->host,
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sockhost, target_p->info);
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}
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
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return 0;
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}
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static void
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match_masktrace(struct Client *source_p, rb_dlink_list *list,
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const char *username, const char *hostname, const char *name,
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const char *gecos)
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{
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struct Client *target_p;
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rb_dlink_node *ptr;
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const char *sockhost;
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RB_DLINK_FOREACH(ptr, list->head)
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{
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target_p = ptr->data;
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if(!IsPerson(target_p))
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continue;
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if(EmptyString(target_p->sockhost))
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sockhost = empty_sockhost;
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else if(!show_ip(source_p, target_p))
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sockhost = spoofed_sockhost;
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else
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sockhost = target_p->sockhost;
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if(match(username, target_p->username) &&
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(match(hostname, target_p->host) ||
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match(hostname, target_p->orighost) ||
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match(hostname, sockhost) || match_ips(hostname, sockhost)))
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{
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if(name != NULL && !match(name, target_p->name))
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continue;
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if(gecos != NULL && !match_esc(gecos, target_p->info))
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continue;
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sendto_one(source_p, form_str(RPL_ETRACE),
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me.name, source_p->name,
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IsOper(target_p) ? "Oper" : "User",
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/* class field -- pretend its server.. */
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target_p->servptr->name,
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target_p->name, target_p->username, target_p->host,
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sockhost, target_p->info);
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}
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}
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}
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static int
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mo_masktrace(struct Client *client_p, struct Client *source_p, int parc,
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const char *parv[])
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{
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char *name, *username, *hostname, *gecos;
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const char *mask;
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int operspy = 0;
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mask = parv[1];
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name = LOCAL_COPY(parv[1]);
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collapse(name);
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if(IsOperSpy(source_p) && parv[1][0] == '!')
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{
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name++;
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mask++;
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operspy = 1;
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}
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if(parc > 2 && !EmptyString(parv[2]))
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{
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gecos = LOCAL_COPY(parv[2]);
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collapse_esc(gecos);
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} else
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gecos = NULL;
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if((hostname = strchr(name, '@')) == NULL)
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{
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sendto_one_notice(source_p, ":Invalid parameters");
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return 0;
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}
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*hostname++ = '\0';
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if((username = strchr(name, '!')) == NULL)
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{
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username = name;
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name = NULL;
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} else
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*username++ = '\0';
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if(EmptyString(username) || EmptyString(hostname))
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{
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sendto_one_notice(source_p, ":Invalid parameters");
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return 0;
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}
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if(operspy) {
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if (!ConfigFileEntry.operspy_dont_care_user_info)
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{
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char buf[512];
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rb_strlcpy(buf, mask, sizeof(buf));
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if(!EmptyString(gecos)) {
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rb_strlcat(buf, " ", sizeof(buf));
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rb_strlcat(buf, gecos, sizeof(buf));
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}
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report_operspy(source_p, "MASKTRACE", buf);
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}
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match_masktrace(source_p, &global_client_list, username, hostname, name, gecos);
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} else
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match_masktrace(source_p, &lclient_list, username, hostname, name, gecos);
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), me.name);
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return 0;
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}
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