410 lines
12 KiB
C
410 lines
12 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* m_trace.c: Traces a path to a client/server.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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*/
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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 m_trace(struct Client *, struct Client *, int, const char **);
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static void trace_spy(struct Client *, struct Client *);
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struct Message trace_msgtab = {
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"TRACE", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, {m_trace, 0}, {m_trace, 0}, mg_ignore, mg_ignore, {m_trace, 0}}
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};
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int doing_trace_hook;
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mapi_clist_av1 trace_clist[] = { &trace_msgtab, NULL };
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mapi_hlist_av1 trace_hlist[] = {
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{ "doing_trace", &doing_trace_hook },
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{ NULL, NULL }
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};
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DECLARE_MODULE_AV1(trace, NULL, NULL, trace_clist, trace_hlist, NULL, "$Revision: 3183 $");
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static void count_downlinks(struct Client *server_p, int *pservcount, int *pusercount);
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static int report_this_status(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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/*
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* m_trace
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* parv[1] = servername
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*/
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static int
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m_trace(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 = NULL;
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struct Class *cltmp;
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const char *tname;
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int doall = 0;
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int cnt = 0, wilds, dow;
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rb_dlink_node *ptr;
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if(parc > 1) {
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tname = parv[1];
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if(parc > 2) {
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if(hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv) !=
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HUNTED_ISME)
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return 0;
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}
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} else
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tname = me.name;
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/* if we have 3 parameters, then the command is directed at us. So
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* we shouldnt be forwarding it anywhere.
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*/
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if(parc < 3) {
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switch (hunt_server(client_p, source_p, ":%s TRACE :%s", 1, parc, parv)) {
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case HUNTED_PASS: { /* note: gets here only if parv[1] exists */
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struct Client *ac2ptr;
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if(MyClient(source_p))
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ac2ptr = find_named_client(tname);
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else
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ac2ptr = find_client(tname);
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if(ac2ptr == NULL) {
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RB_DLINK_FOREACH(ptr, global_serv_list.head) {
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ac2ptr = ptr->data;
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if(match(tname, ac2ptr->name))
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break;
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else
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ac2ptr = NULL;
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}
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}
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/* giving this out with flattened links defeats the
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* object --fl
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*/
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if(IsOper(source_p) || IsExemptShide(source_p) ||
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!ConfigServerHide.flatten_links)
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sendto_one_numeric(source_p, RPL_TRACELINK,
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form_str(RPL_TRACELINK),
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ircd_version,
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ac2ptr ? ac2ptr->name : tname,
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ac2ptr ? ac2ptr->from->name : "EEK!");
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return 0;
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}
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case HUNTED_ISME:
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break;
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default:
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return 0;
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}
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}
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if(match(tname, me.name)) {
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doall = 1;
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}
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/* if theyre tracing our SID, we need to move tname to our name so
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* we dont give the sid in ENDOFTRACE
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*/
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else if(!MyClient(source_p) && !strcmp(tname, me.id)) {
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doall = 1;
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tname = me.name;
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}
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wilds = strchr(tname, '*') || strchr(tname, '?');
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dow = wilds || doall;
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/* specific trace */
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if(dow == 0) {
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if(MyClient(source_p) || parc > 2)
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target_p = find_named_person(tname);
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else
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target_p = find_person(tname);
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/* tname could be pointing to an ID at this point, so reset
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* it to target_p->name if we have a target --fl
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*/
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if(target_p != NULL) {
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report_this_status(source_p, target_p);
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tname = target_p->name;
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}
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trace_spy(source_p, target_p);
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sendto_one_numeric(source_p, RPL_ENDOFTRACE,
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form_str(RPL_ENDOFTRACE), tname);
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return 0;
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}
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trace_spy(source_p, NULL);
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/* give non-opers a limited trace output of themselves (if local),
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* opers and servers (if no shide) --fl
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*/
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if(!IsOper(source_p)) {
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if(MyClient(source_p)) {
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if(doall || (wilds && match(tname, source_p->name)))
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report_this_status(source_p, source_p);
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}
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RB_DLINK_FOREACH(ptr, local_oper_list.head) {
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target_p = ptr->data;
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if(!doall && wilds && (match(tname, target_p->name) == 0))
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continue;
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report_this_status(source_p, target_p);
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}
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if (IsExemptShide(source_p) || !ConfigServerHide.flatten_links) {
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RB_DLINK_FOREACH(ptr, serv_list.head) {
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target_p = ptr->data;
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if(!doall && wilds && !match(tname, target_p->name))
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continue;
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report_this_status(source_p, target_p);
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}
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}
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sendto_one_numeric(source_p, RPL_ENDOFTRACE,
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form_str(RPL_ENDOFTRACE), tname);
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return 0;
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}
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/* source_p is opered */
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/* report all direct connections */
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RB_DLINK_FOREACH(ptr, lclient_list.head) {
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target_p = ptr->data;
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/* dont show invisible users to remote opers */
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if(IsInvisible(target_p) && dow && !MyConnect(source_p) && !IsOper(target_p))
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continue;
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if(!doall && wilds && !match(tname, target_p->name))
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continue;
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/* remote opers may not see invisible normal users */
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if(dow && !MyConnect(source_p) && !IsOper(target_p) &&
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IsInvisible(target_p))
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continue;
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cnt = report_this_status(source_p, target_p);
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}
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RB_DLINK_FOREACH(ptr, serv_list.head) {
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target_p = ptr->data;
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if(!doall && wilds && !match(tname, target_p->name))
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continue;
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cnt = report_this_status(source_p, target_p);
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}
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if(MyConnect(source_p)) {
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RB_DLINK_FOREACH(ptr, unknown_list.head) {
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target_p = ptr->data;
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if(!doall && wilds && !match(tname, target_p->name))
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continue;
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cnt = report_this_status(source_p, target_p);
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}
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}
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if(!cnt) {
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sendto_one_numeric(source_p, ERR_NOSUCHSERVER, form_str(ERR_NOSUCHSERVER),
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tname);
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/* let the user have some idea that its at the end of the
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* trace
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*/
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sendto_one_numeric(source_p, RPL_ENDOFTRACE,
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form_str(RPL_ENDOFTRACE), tname);
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return 0;
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}
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if(doall) {
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RB_DLINK_FOREACH(ptr, class_list.head) {
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cltmp = ptr->data;
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if(CurrUsers(cltmp) > 0)
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sendto_one_numeric(source_p, RPL_TRACECLASS,
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form_str(RPL_TRACECLASS),
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ClassName(cltmp), CurrUsers(cltmp));
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}
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}
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sendto_one_numeric(source_p, RPL_ENDOFTRACE, form_str(RPL_ENDOFTRACE), tname);
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return 0;
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}
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/*
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* count_downlinks
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*
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* inputs - pointer to server to count
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* - pointers to server and user count
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* output - NONE
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* side effects - server and user counts are added to given values
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*/
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static void
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count_downlinks(struct Client *server_p, int *pservcount, int *pusercount)
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{
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rb_dlink_node *ptr;
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(*pservcount)++;
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*pusercount += rb_dlink_list_length(&server_p->serv->users);
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RB_DLINK_FOREACH(ptr, server_p->serv->servers.head) {
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count_downlinks(ptr->data, pservcount, pusercount);
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}
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}
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/*
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* report_this_status
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*
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* inputs - pointer to client to report to
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* - pointer to client to report about
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* output - counter of number of hits
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* side effects - NONE
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*/
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static int
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report_this_status(struct Client *source_p, struct Client *target_p)
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{
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const char *name;
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const char *class_name;
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char ip[HOSTIPLEN];
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int cnt = 0;
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/* sanity check - should never happen */
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if(!MyConnect(target_p))
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return 0;
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rb_inet_ntop_sock((struct sockaddr *)&target_p->localClient->ip, ip, sizeof(ip));
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class_name = get_client_class(target_p);
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if(IsAnyServer(target_p))
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name = target_p->name;
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else
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name = get_client_name(target_p, HIDE_IP);
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switch (target_p->status) {
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case STAT_CONNECTING:
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sendto_one_numeric(source_p, RPL_TRACECONNECTING,
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form_str(RPL_TRACECONNECTING),
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class_name, name);
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cnt++;
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break;
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case STAT_HANDSHAKE:
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sendto_one_numeric(source_p, RPL_TRACEHANDSHAKE,
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form_str(RPL_TRACEHANDSHAKE),
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class_name, name);
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cnt++;
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break;
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case STAT_ME:
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break;
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case STAT_UNKNOWN:
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/* added time -Taner */
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sendto_one_numeric(source_p, RPL_TRACEUNKNOWN,
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form_str(RPL_TRACEUNKNOWN),
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class_name, name, ip,
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rb_current_time() - target_p->localClient->firsttime);
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cnt++;
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break;
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case STAT_CLIENT: {
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int tnumeric;
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tnumeric = IsOper(target_p) ? RPL_TRACEOPERATOR : RPL_TRACEUSER;
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sendto_one_numeric(source_p, tnumeric, form_str(tnumeric),
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class_name, name,
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show_ip(source_p, target_p) ? ip : empty_sockhost,
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rb_current_time() - target_p->localClient->lasttime,
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rb_current_time() - target_p->localClient->last);
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cnt++;
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}
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break;
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case STAT_SERVER: {
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int usercount = 0;
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int servcount = 0;
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count_downlinks(target_p, &servcount, &usercount);
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sendto_one_numeric(source_p, RPL_TRACESERVER, form_str(RPL_TRACESERVER),
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class_name, servcount, usercount, name,
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*(target_p->serv->by) ? target_p->serv->by : "*", "*",
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me.name, rb_current_time() - target_p->localClient->lasttime);
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cnt++;
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}
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break;
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default: /* ...we actually shouldn't come here... --msa */
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sendto_one_numeric(source_p, RPL_TRACENEWTYPE,
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form_str(RPL_TRACENEWTYPE),
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me.name, source_p->name, name);
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cnt++;
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break;
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}
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return (cnt);
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}
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/* trace_spy()
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*
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* input - pointer to client
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* output - none
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* side effects - hook event doing_trace is called
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*/
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static void
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trace_spy(struct Client *source_p, struct Client *target_p)
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{
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hook_data_client hdata;
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hdata.client = source_p;
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hdata.target = target_p;
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call_hook(doing_trace_hook, &hdata);
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}
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