| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
| 3 |
* m_trace.c: Traces a path to a client/server. |
| 4 |
* |
| 5 |
* Copyright (C) 2002 by the past and present ircd coders, and others. |
| 6 |
* |
| 7 |
* This program is free software; you can redistribute it and/or modify |
| 8 |
* it under the terms of the GNU General Public License as published by |
| 9 |
* the Free Software Foundation; either version 2 of the License, or |
| 10 |
* (at your option) any later version. |
| 11 |
* |
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* This program is distributed in the hope that it will be useful, |
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
* GNU General Public License for more details. |
| 16 |
* |
| 17 |
* You should have received a copy of the GNU General Public License |
| 18 |
* along with this program; if not, write to the Free Software |
| 19 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 20 |
* USA |
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* |
| 22 |
* $Id$ |
| 23 |
*/ |
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|
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#include "stdinc.h" |
| 26 |
#include "handlers.h" |
| 27 |
#include "list.h" |
| 28 |
#include "hook.h" |
| 29 |
#include "client.h" |
| 30 |
#include "hash.h" |
| 31 |
#include "common.h" |
| 32 |
#include "irc_string.h" |
| 33 |
#include "ircd.h" |
| 34 |
#include "numeric.h" |
| 35 |
#include "fdlist.h" |
| 36 |
#include "s_bsd.h" |
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#include "s_serv.h" |
| 38 |
#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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#include "s_conf.h" |
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|
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static void m_trace(struct Client *, struct Client *, int, char *[]); |
| 45 |
static void ms_trace(struct Client *, struct Client *, int, char *[]); |
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static void mo_trace(struct Client *, struct Client *, int, char *[]); |
| 47 |
static void do_actual_trace(struct Client *, int, char *[]); |
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|
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struct Message trace_msgtab = { |
| 50 |
"TRACE", 0, 0, 0, 0, MFLG_SLOW, 0, |
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{ m_unregistered, m_trace, ms_trace, m_ignore, mo_trace, m_ignore } |
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}; |
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|
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const char *_version = "$Revision$"; |
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static struct Callback *trace_cb; |
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|
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static void * |
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va_actual_trace(va_list args) |
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{ |
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struct Client *source_p = va_arg(args, struct Client *); |
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int parc = va_arg(args, int); |
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char **parv = va_arg(args, char **); |
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|
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do_actual_trace(source_p, parc, parv); |
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return NULL; |
| 66 |
} |
| 67 |
|
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void |
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_modinit(void) |
| 70 |
{ |
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trace_cb = register_callback("doing_trace", va_actual_trace); |
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mod_add_cmd(&trace_msgtab); |
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} |
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|
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void |
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_moddeinit(void) |
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{ |
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mod_del_cmd(&trace_msgtab); |
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uninstall_hook(trace_cb, va_actual_trace); |
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} |
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|
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static void report_this_status(struct Client *, struct Client *, int); |
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|
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static void |
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trace_get_dependent(int *const server, |
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int *const client, const struct Client *target_p) |
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{ |
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const dlink_node *ptr = NULL; |
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|
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(*server)++; |
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(*client) += dlink_list_length(&target_p->serv->client_list); |
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|
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DLINK_FOREACH(ptr, target_p->serv->server_list.head) |
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trace_get_dependent(server, client, ptr->data); |
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} |
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|
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/* |
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* m_trace() |
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* |
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* parv[0] = sender prefix |
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* parv[1] = target client/server to trace |
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*/ |
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static void |
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m_trace(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
| 106 |
{ |
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const char *tname; |
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|
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if (parc > 1) |
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tname = parv[1]; |
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else |
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tname = me.name; |
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|
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sendto_one(source_p, form_str(RPL_ENDOFTRACE), |
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me.name, source_p->name, tname); |
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} |
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|
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|
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/* mo_trace() |
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* parv[0] = sender prefix |
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* parv[1] = servername |
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*/ |
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static void |
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mo_trace(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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dlink_node *ptr; |
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const char *tname; |
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const char *from, *to; |
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|
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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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return; |
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|
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if (parc > 1) |
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tname = parv[1]; |
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else |
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tname = me.name; |
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|
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if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
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{ |
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from = me.id; |
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to = source_p->id; |
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} |
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else |
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{ |
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from = me.name; |
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to = source_p->name; |
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} |
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|
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switch (hunt_server(client_p, source_p, ":%s TRACE :%s", 1, parc, parv)) |
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{ |
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case HUNTED_PASS: /* note: gets here only if parv[1] exists */ |
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{ |
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struct Client *ac2ptr = NULL; |
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|
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if ((ac2ptr = find_client(tname)) == NULL) |
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{ |
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DLINK_FOREACH(ptr, global_client_list.head) |
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{ |
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ac2ptr = ptr->data; |
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|
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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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|
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if (ac2ptr != NULL) |
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sendto_one(source_p, form_str(RPL_TRACELINK), from, to, |
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ircd_version, tname, ac2ptr->from->name); |
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else |
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sendto_one(source_p, form_str(RPL_TRACELINK), from, to, |
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ircd_version, tname, "ac2ptr_is_NULL!!"); |
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return; |
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} |
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|
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case HUNTED_ISME: |
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execute_callback(trace_cb, source_p, parc, parv); |
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break; |
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default: |
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return; |
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} |
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} |
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|
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static void |
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do_actual_trace(struct Client *source_p, int parc, char *parv[]) |
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{ |
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struct Client *target_p = NULL; |
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struct ConfItem *conf; |
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struct ClassItem *cltmp; |
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int doall = 0; |
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int wilds, dow; |
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dlink_node *ptr; |
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const char *from, *to, *tname; |
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|
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if (parc > 1) |
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tname = parv[1]; |
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else |
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tname = me.name; |
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|
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if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
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{ |
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from = me.id; |
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to = source_p->id; |
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} |
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else |
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{ |
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from = me.name; |
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to = source_p->name; |
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} |
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|
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if (match(tname, me.name)) |
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doall = TRUE; |
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else if (!MyClient(source_p) && !strcmp(tname, me.id)) |
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{ |
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doall = TRUE; |
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tname = me.name; |
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} |
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|
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wilds = !parv[1] || strchr(tname, '*') || strchr(tname, '?'); |
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dow = wilds || doall; |
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|
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set_time(); |
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if (!IsOper(source_p) || !dow) /* non-oper traces must be full nicks */ |
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/* lets also do this for opers tracing nicks */ |
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{ |
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const char *name; |
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const char *class_name; |
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|
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target_p = find_client(tname); |
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|
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if (target_p && IsClient(target_p)) |
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{ |
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name = get_client_name(target_p, HIDE_IP); |
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class_name = get_client_class(target_p); |
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|
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if (IsOper(target_p)) |
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{ |
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sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
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from, to, class_name, name, |
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IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
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CurrentTime - target_p->lasttime, |
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CurrentTime - target_p->localClient->last); |
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} |
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else |
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{ |
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sendto_one(source_p,form_str(RPL_TRACEUSER), |
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from, to, class_name, name, |
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IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
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CurrentTime - target_p->lasttime, |
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CurrentTime - target_p->localClient->last); |
| 254 |
} |
| 255 |
} |
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|
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sendto_one(source_p, form_str(RPL_ENDOFTRACE), |
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from, to, tname); |
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return; |
| 260 |
} |
| 261 |
|
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/* report all direct connections */ |
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DLINK_FOREACH(ptr, local_client_list.head) |
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{ |
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target_p = ptr->data; |
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|
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if (IsInvisible(target_p) && dow && |
| 268 |
!(MyConnect(source_p) && IsOper(source_p)) && |
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!IsOper(target_p) && (target_p != source_p)) |
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continue; |
| 271 |
if (!doall && wilds && !match(tname, target_p->name)) |
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continue; |
| 273 |
if (!dow && irccmp(tname, target_p->name)) |
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continue; |
| 275 |
|
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report_this_status(source_p, target_p, dow); |
| 277 |
} |
| 278 |
|
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DLINK_FOREACH(ptr, serv_list.head) |
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{ |
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target_p = ptr->data; |
| 282 |
|
| 283 |
if (!doall && wilds && !match(tname, target_p->name)) |
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continue; |
| 285 |
if (!dow && irccmp(tname, target_p->name)) |
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continue; |
| 287 |
|
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report_this_status(source_p, target_p, dow); |
| 289 |
} |
| 290 |
|
| 291 |
/* This section is to report the unknowns */ |
| 292 |
DLINK_FOREACH(ptr, unknown_list.head) |
| 293 |
{ |
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target_p = ptr->data; |
| 295 |
|
| 296 |
if (!doall && wilds && !match(tname, target_p->name)) |
| 297 |
continue; |
| 298 |
if (!dow && irccmp(tname, target_p->name)) |
| 299 |
continue; |
| 300 |
|
| 301 |
report_this_status(source_p, target_p, dow); |
| 302 |
} |
| 303 |
|
| 304 |
DLINK_FOREACH(ptr, class_items.head) |
| 305 |
{ |
| 306 |
conf = ptr->data; |
| 307 |
cltmp = map_to_conf(conf); |
| 308 |
|
| 309 |
if (CurrUserCount(cltmp) > 0) |
| 310 |
sendto_one(source_p, form_str(RPL_TRACECLASS), |
| 311 |
from, to, conf->name, CurrUserCount(cltmp)); |
| 312 |
} |
| 313 |
|
| 314 |
sendto_one(source_p, form_str(RPL_ENDOFTRACE), from, to, tname); |
| 315 |
} |
| 316 |
|
| 317 |
/* |
| 318 |
** ms_trace |
| 319 |
** parv[0] = sender prefix |
| 320 |
** parv[1] = servername |
| 321 |
*/ |
| 322 |
static void |
| 323 |
ms_trace(struct Client *client_p, struct Client *source_p, |
| 324 |
int parc, char *parv[]) |
| 325 |
{ |
| 326 |
if (hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv)) |
| 327 |
return; |
| 328 |
|
| 329 |
if (IsOper(source_p)) |
| 330 |
mo_trace(client_p, source_p, parc, parv); |
| 331 |
} |
| 332 |
|
| 333 |
/* report_this_status() |
| 334 |
* |
| 335 |
* inputs - pointer to client to report to |
| 336 |
* - pointer to client to report about |
| 337 |
* output - counter of number of hits |
| 338 |
* side effects - NONE |
| 339 |
*/ |
| 340 |
static void |
| 341 |
report_this_status(struct Client *source_p, struct Client *target_p, int dow) |
| 342 |
{ |
| 343 |
const char *name; |
| 344 |
const char *class_name; |
| 345 |
const char *from, *to; |
| 346 |
|
| 347 |
if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
| 348 |
{ |
| 349 |
from = me.id; |
| 350 |
to = source_p->id; |
| 351 |
} |
| 352 |
else |
| 353 |
{ |
| 354 |
from = me.name; |
| 355 |
to = source_p->name; |
| 356 |
} |
| 357 |
|
| 358 |
name = get_client_name(target_p, HIDE_IP); |
| 359 |
class_name = get_client_class(target_p); |
| 360 |
|
| 361 |
set_time(); |
| 362 |
|
| 363 |
switch (target_p->status) |
| 364 |
{ |
| 365 |
case STAT_CONNECTING: |
| 366 |
sendto_one(source_p, form_str(RPL_TRACECONNECTING), |
| 367 |
from, to, class_name, |
| 368 |
IsOperAdmin(source_p) ? name : target_p->name); |
| 369 |
break; |
| 370 |
case STAT_HANDSHAKE: |
| 371 |
sendto_one(source_p, form_str(RPL_TRACEHANDSHAKE), |
| 372 |
from, to, class_name, |
| 373 |
IsOperAdmin(source_p) ? name : target_p->name); |
| 374 |
break; |
| 375 |
case STAT_ME: |
| 376 |
break; |
| 377 |
case STAT_UNKNOWN: |
| 378 |
/* added time -Taner */ |
| 379 |
sendto_one(source_p, form_str(RPL_TRACEUNKNOWN), |
| 380 |
from, to, class_name, name, target_p->sockhost, |
| 381 |
target_p->firsttime ? CurrentTime - target_p->firsttime : -1); |
| 382 |
break; |
| 383 |
case STAT_CLIENT: |
| 384 |
/* |
| 385 |
* Only opers see users if there is a wildcard |
| 386 |
* but anyone can see all the opers. |
| 387 |
*/ |
| 388 |
if ((IsOper(source_p) && |
| 389 |
(MyClient(source_p) || !(dow && IsInvisible(target_p)))) |
| 390 |
|| !dow || IsOper(target_p)) |
| 391 |
{ |
| 392 |
if (IsAdmin(target_p) && !ConfigFileEntry.hide_spoof_ips) |
| 393 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 394 |
from, to, class_name, name, |
| 395 |
IsOperAdmin(source_p) ? target_p->sockhost : "255.255.255.255", |
| 396 |
CurrentTime - target_p->lasttime, |
| 397 |
CurrentTime - target_p->localClient->last); |
| 398 |
|
| 399 |
else if (IsOper(target_p)) |
| 400 |
{ |
| 401 |
if (ConfigFileEntry.hide_spoof_ips) |
| 402 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 403 |
from, to, class_name, name, |
| 404 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 405 |
CurrentTime - target_p->lasttime, |
| 406 |
CurrentTime - target_p->localClient->last); |
| 407 |
else |
| 408 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 409 |
from, to, class_name, name, |
| 410 |
MyOper(source_p) ? target_p->sockhost : |
| 411 |
(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
| 412 |
CurrentTime - target_p->lasttime, |
| 413 |
CurrentTime - target_p->localClient->last); |
| 414 |
} |
| 415 |
else |
| 416 |
{ |
| 417 |
const char *format_str=NULL; |
| 418 |
if (IsOper(source_p) && IsCaptured(target_p)) |
| 419 |
format_str = form_str(RPL_TRACECAPTURED); |
| 420 |
else |
| 421 |
format_str = form_str(RPL_TRACEUSER); |
| 422 |
|
| 423 |
if (ConfigFileEntry.hide_spoof_ips) |
| 424 |
sendto_one(source_p, format_str, |
| 425 |
from, to, class_name, name, |
| 426 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 427 |
CurrentTime - target_p->lasttime, |
| 428 |
CurrentTime - target_p->localClient->last); |
| 429 |
else |
| 430 |
sendto_one(source_p, format_str, |
| 431 |
from, to, class_name, name, |
| 432 |
MyOper(source_p) ? target_p->sockhost : |
| 433 |
(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
| 434 |
CurrentTime - target_p->lasttime, |
| 435 |
CurrentTime - target_p->localClient->last); |
| 436 |
} |
| 437 |
} |
| 438 |
break; |
| 439 |
case STAT_SERVER: |
| 440 |
{ |
| 441 |
int clients = 0; |
| 442 |
int servers = 0; |
| 443 |
|
| 444 |
trace_get_dependent(&servers, &clients, target_p); |
| 445 |
|
| 446 |
if (!IsOperAdmin(source_p)) |
| 447 |
name = get_client_name(target_p, MASK_IP); |
| 448 |
|
| 449 |
sendto_one(source_p, form_str(RPL_TRACESERVER), |
| 450 |
from, to, class_name, servers, |
| 451 |
clients, name, *(target_p->serv->by) ? |
| 452 |
target_p->serv->by : "*", "*", |
| 453 |
me.name, CurrentTime - target_p->lasttime); |
| 454 |
break; |
| 455 |
} |
| 456 |
|
| 457 |
default: /* ...we actually shouldn't come here... --msa */ |
| 458 |
sendto_one(source_p, form_str(RPL_TRACENEWTYPE), |
| 459 |
from, to, name); |
| 460 |
break; |
| 461 |
} |
| 462 |
} |
