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NeoStats-NeoIRCd/modules/m_trace.c
2002-09-19 05:41:11 +00:00

462 lines
13 KiB
C

/*
* NeoIRCd: NeoStats Group. Based on Hybird7
* m_trace.c: Traces a path to a client/server.
*
* Copyright (C) 2002 by the past and present ircd coders, and others.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* $Id: m_trace.c,v 1.4 2002/09/19 05:41:10 fishwaldo Exp $
*/
#include "stdinc.h"
#include "handlers.h"
#include "class.h"
#include "hook.h"
#include "client.h"
#include "hash.h"
#include "common.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "fdlist.h"
#include "s_bsd.h"
#include "s_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
static void m_trace(struct Client *, struct Client *, int, char **);
static void ms_trace(struct Client*, struct Client*, int, char**);
static void mo_trace(struct Client*, struct Client*, int, char**);
static struct Client* next_client_double(struct Client *next, const char* ch);
static void trace_spy(struct Client *);
struct Message trace_msgtab = {
"TRACE", 0, 0, 0, 0, MFLG_SLOW, 0,
{m_unregistered, m_trace, ms_trace, mo_trace}
};
#ifndef STATIC_MODULES
void
_modinit(void)
{
hook_add_event("doing_trace");
mod_add_cmd(&trace_msgtab);
}
void
_moddeinit(void)
{
hook_del_event("doing_trace");
mod_del_cmd(&trace_msgtab);
}
const char *_version = "$Revision: 1.4 $";
#endif
static int report_this_status(struct Client *source_p, struct Client *target_p,int dow,
int link_u_p, int link_u_s);
/*
* m_trace()
*
* parv[0] = sender prefix
* parv[1] = target client/server to trace
*/
static void m_trace(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
char *tname;
if (parc > 1)
tname = parv[1];
else
tname = me.name;
sendto_one(source_p, form_str(RPL_ENDOFTRACE), me.name, parv[0], tname);
}
/*
** mo_trace
** parv[0] = sender prefix
** parv[1] = servername
*/
static void
mo_trace(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
struct Client *target_p = NULL;
struct Class *cltmp;
char *tname;
int doall, link_s[MAXCONNECTIONS], link_u[MAXCONNECTIONS];
int cnt = 0, wilds, dow;
dlink_node *ptr;
char *looking_for = parv[0];
if(!IsClient(source_p))
return;
if (parc > 2)
if (hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv))
return;
if (parc > 1)
tname = parv[1];
else
tname = me.name;
switch (hunt_server(client_p, source_p, ":%s TRACE :%s", 1, parc, parv))
{
case HUNTED_PASS: /* note: gets here only if parv[1] exists */
{
struct Client *ac2ptr;
ac2ptr = next_client_double(GlobalClientList, tname);
if (ac2ptr)
sendto_one(source_p, form_str(RPL_TRACELINK), me.name, looking_for,
ircd_version, debugmode, tname, ac2ptr->from->name);
else
sendto_one(source_p, form_str(RPL_TRACELINK), me.name, looking_for,
ircd_version, debugmode, tname, "ac2ptr_is_NULL!!");
return;
}
case HUNTED_ISME:
break;
default:
return;
}
trace_spy(source_p);
doall = (parv[1] && (parc > 1)) ? match(tname, me.name): TRUE;
wilds = !parv[1] || strchr(tname, '*') || strchr(tname, '?');
dow = wilds || doall;
set_time();
if(!IsOper(source_p) || !dow) /* non-oper traces must be full nicks */
/* lets also do this for opers tracing nicks */
{
const char* name;
const char* class_name;
char ipaddr[HOSTIPLEN];
target_p = find_client(tname);
if(target_p && IsPerson(target_p))
{
name = get_client_name(target_p, HIDE_IP);
inetntop(target_p->localClient->aftype, &IN_ADDR(target_p->localClient->ip), ipaddr, HOSTIPLEN);
class_name = get_client_class(target_p);
if (IsOper(target_p))
{
sendto_one(source_p, form_str(RPL_TRACEOPERATOR),
me.name, parv[0], class_name, name,
MyOper(source_p) ? ipaddr :
"255.255.255.255",
CurrentTime - target_p->lasttime,
(target_p->user) ? (CurrentTime - target_p->user->last) : 0);
}
else
{
sendto_one(source_p,form_str(RPL_TRACEUSER),
me.name, parv[0], class_name, name,
MyOper(source_p) ? ipaddr :
"255.255.255.255",
CurrentTime - target_p->lasttime,
(target_p->user)?(CurrentTime - target_p->user->last):0);
}
}
sendto_one(source_p, form_str(RPL_ENDOFTRACE),me.name,
parv[0], tname);
return;
}
memset((void *)link_s,0,sizeof(link_s));
memset((void *)link_u,0,sizeof(link_u));
/*
* Count up all the servers and clients in a downlink.
*/
if (doall)
{
for (target_p = GlobalClientList; target_p; target_p = target_p->next)
{
if (IsPerson(target_p))
{
link_u[target_p->from->localClient->fd]++;
}
else if (IsServer(target_p))
{
link_s[target_p->from->localClient->fd]++;
}
}
}
/* report all direct connections */
DLINK_FOREACH(ptr, lclient_list.head)
{
target_p = ptr->data;
if (IsInvisible(target_p) && dow &&
!(MyConnect(source_p) && IsOper(source_p)) &&
!IsOper(target_p) && (target_p != source_p))
continue;
if (!doall && wilds && !match(tname, target_p->name))
continue;
if (!dow && irccmp(tname, target_p->name))
continue;
cnt = report_this_status(source_p,target_p,dow,0,0);
}
DLINK_FOREACH(ptr, serv_list.head)
{
target_p = ptr->data;
if (!doall && wilds && !match(tname, target_p->name))
continue;
if (!dow && irccmp(tname, target_p->name))
continue;
cnt = report_this_status(source_p, target_p, dow,
link_u[target_p->localClient->fd],
link_s[target_p->localClient->fd]);
}
/* This section is to report the unknowns */
DLINK_FOREACH(ptr, unknown_list.head)
{
target_p = ptr->data;
if (!doall && wilds && !match(tname, target_p->name))
continue;
if (!dow && irccmp(tname, target_p->name))
continue;
cnt = report_this_status(source_p,target_p,dow,0,0);
}
/*
* Add these lines to summarize the above which can get rather long
* and messy when done remotely - Avalon
*/
if (!SendWallops(source_p) || !cnt)
{
/* redundant given we dont allow trace from non-opers anyway.. but its
* left here in case that should ever change --fl
*/
if(!cnt)
sendto_one(source_p, form_str(RPL_TRACESERVER),
me.name, parv[0], 0, link_s[me.localClient->fd],
link_u[me.localClient->fd], me.name, "*", "*", me.name);
/* let the user have some idea that its at the end of the
* trace
*/
sendto_one(source_p, form_str(RPL_ENDOFTRACE),me.name,
parv[0],tname);
return;
}
for (cltmp = ClassList; doall && cltmp; cltmp = cltmp->next)
if (Links(cltmp) > 0)
sendto_one(source_p, form_str(RPL_TRACECLASS), me.name,
parv[0], ClassName(cltmp), Links(cltmp));
sendto_one(source_p, form_str(RPL_ENDOFTRACE),me.name, parv[0],tname);
}
/*
** ms_trace
** parv[0] = sender prefix
** parv[1] = servername
*/
static void
ms_trace(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
if (hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv))
return;
if( IsOper(source_p) )
mo_trace(client_p,source_p,parc,parv);
return;
}
/*
* report_this_status
*
* inputs - pointer to client to report to
* - pointer to client to report about
* output - counter of number of hits
* side effects - NONE
*/
static int
report_this_status(struct Client *source_p, struct Client *target_p,
int dow, int link_u_p, int link_s_p)
{
const char* name;
const char* class_name;
char ip[HOSTIPLEN];
int cnt=0;
inetntop(target_p->localClient->aftype, &IN_ADDR(target_p->localClient->ip), ip, HOSTIPLEN);
name = get_client_name(target_p, HIDE_IP);
class_name = get_client_class(target_p);
set_time();
switch(target_p->status)
{
case STAT_CONNECTING:
sendto_one(source_p, form_str(RPL_TRACECONNECTING), me.name,
source_p->name, class_name,
IsOperAdmin(source_p) ? name : target_p->name);
cnt++;
break;
case STAT_HANDSHAKE:
sendto_one(source_p, form_str(RPL_TRACEHANDSHAKE), me.name,
source_p->name, class_name,
IsOperAdmin(source_p) ? name : target_p->name);
cnt++;
break;
case STAT_ME:
break;
case STAT_UNKNOWN:
/* added time -Taner */
sendto_one(source_p, form_str(RPL_TRACEUNKNOWN),
me.name, source_p->name, class_name, name, ip,
target_p->firsttime ? CurrentTime - target_p->firsttime : -1);
cnt++;
break;
case STAT_CLIENT:
/* Only opers see users if there is a wildcard
* but anyone can see all the opers.
*/
if ((IsOper(source_p) &&
(MyClient(source_p) || !(dow && IsInvisible(target_p))))
|| !dow || IsOper(target_p))
{
if (IsAdmin(target_p))
sendto_one(source_p, form_str(RPL_TRACEOPERATOR),
me.name, source_p->name, class_name, name,
IsOperAdmin(source_p) ? ip : "255.255.255.255",
CurrentTime - target_p->lasttime,
(target_p->user) ? (CurrentTime - target_p->user->last) : 0);
else
if (IsOper(target_p))
sendto_one(source_p, form_str(RPL_TRACEOPERATOR),
me.name, source_p->name, class_name, name,
MyOper(source_p) ? ip :
"255.255.255.255",
CurrentTime - target_p->lasttime,
(target_p->user)?(CurrentTime - target_p->user->last):0);
else
sendto_one(source_p, form_str(RPL_TRACEUSER),
me.name, source_p->name, class_name, name,
MyOper(source_p) ? ip :
"255.255.255.255",
CurrentTime - target_p->lasttime,
(target_p->user)?(CurrentTime - target_p->user->last):0);
cnt++;
}
break;
case STAT_SERVER:
if(!IsOperAdmin(source_p))
name = get_client_name(target_p, MASK_IP);
sendto_one(source_p, form_str(RPL_TRACESERVER),
me.name, source_p->name, class_name, link_s_p,
link_u_p, name, *(target_p->serv->by) ?
target_p->serv->by : "*", "*",
me.name, CurrentTime - target_p->lasttime);
cnt++;
break;
default: /* ...we actually shouldn't come here... --msa */
sendto_one(source_p, form_str(RPL_TRACENEWTYPE), me.name,
source_p->name, name);
cnt++;
break;
}
return(cnt);
}
/* trace_spy()
*
* input - pointer to client
* output - none
* side effects - hook event doing_trace is called
*/
static void
trace_spy(struct Client *source_p)
{
struct hook_spy_data data;
data.source_p = source_p;
hook_call_event("doing_trace", &data);
}
/*
* this slow version needs to be used for hostmasks *sigh
*
* next_client_double - find the next matching client.
* The search can be continued from the specified client entry.
* Normal usage loop is:
*
* for (x = client; x = next_client_double(x,mask); x = x->next)
* HandleMatchingClient;
*
*/
static struct Client*
next_client_double(struct Client *next, /* First client to check */
const char* ch) /* search string (may include wilds) */
{
struct Client *tmp = next;
next = find_client(ch);
if (next == NULL)
next = tmp;
if (tmp && tmp->prev == next)
return NULL;
if (next != tmp)
return next;
for ( ; next; next = next->next)
{
if (match(ch,next->name) || match(next->name,ch))
break;
}
return next;
}