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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(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) 2002 by the past and present ircd coders, and others. |
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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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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "handlers.h" |
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#include "tools.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 "irc_string.h" |
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#include "ircd.h" |
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#include "numeric.h" |
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#include "fdlist.h" |
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#include "s_bsd.h" |
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#include "s_serv.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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#include "s_conf.h" |
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|
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static void m_trace(struct Client *, struct Client *, int, char *[]); |
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static void ms_trace(struct Client *, struct Client *, int, char *[]); |
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static void mo_trace(struct Client *, struct Client *, int, char *[]); |
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static void do_actual_trace(struct Client *, int, char *[]); |
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|
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struct Message trace_msgtab = { |
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"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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#ifndef STATIC_MODULES |
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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; |
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} |
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|
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void |
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_modinit(void) |
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{ |
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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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#endif |
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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[]) |
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{ |
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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) || match(ac2ptr->name, tname)) |
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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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case HUNTED_ISME: |
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#ifdef STATIC_MODULES |
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do_actual_trace(source_p, parc, parv); |
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#else |
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execute_callback(trace_cb, source_p, parc, parv); |
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#endif |
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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); |
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} |
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} |
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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; |
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} |
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|
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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 && |
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!(MyConnect(source_p) && IsOper(source_p)) && |
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!IsOper(target_p) && (target_p != source_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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if (!dow && irccmp(tname, target_p->name)) |
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continue; |
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|
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report_this_status(source_p, target_p, dow); |
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} |
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|
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DLINK_FOREACH(ptr, serv_list.head) |
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{ |
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target_p = ptr->data; |
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|
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if (!doall && wilds && !match(tname, target_p->name)) |
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continue; |
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if (!dow && irccmp(tname, target_p->name)) |
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continue; |
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|
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report_this_status(source_p, target_p, dow); |
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} |
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|
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/* This section is to report the unknowns */ |
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DLINK_FOREACH(ptr, unknown_list.head) |
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{ |
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target_p = ptr->data; |
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|
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if (!doall && wilds && !match(tname, target_p->name)) |
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continue; |
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if (!dow && irccmp(tname, target_p->name)) |
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continue; |
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|
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report_this_status(source_p, target_p, dow); |
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} |
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|
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DLINK_FOREACH(ptr, class_items.head) |
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{ |
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conf = ptr->data; |
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cltmp = map_to_conf(conf); |
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|
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if (CurrUserCount(cltmp) > 0) |
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sendto_one(source_p, form_str(RPL_TRACECLASS), |
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from, to, conf->name, CurrUserCount(cltmp)); |
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} |
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|
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sendto_one(source_p, form_str(RPL_ENDOFTRACE), from, to, tname); |
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} |
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|
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/* |
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** ms_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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ms_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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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 (IsOper(source_p)) |
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mo_trace(client_p, source_p, parc, parv); |
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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 void |
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report_this_status(struct Client *source_p, struct Client *target_p, int dow) |
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{ |
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const char *name; |
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const char *class_name; |
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const char *from, *to; |
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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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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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set_time(); |
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|
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switch (target_p->status) |
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{ |
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case STAT_CONNECTING: |
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sendto_one(source_p, form_str(RPL_TRACECONNECTING), |
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from, to, class_name, |
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IsOperAdmin(source_p) ? name : target_p->name); |
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break; |
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case STAT_HANDSHAKE: |
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sendto_one(source_p, form_str(RPL_TRACEHANDSHAKE), |
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from, to, class_name, |
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IsOperAdmin(source_p) ? name : target_p->name); |
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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(source_p, form_str(RPL_TRACEUNKNOWN), |
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from, to, class_name, name, target_p->sockhost, |
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target_p->firsttime ? CurrentTime - target_p->firsttime : -1); |
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break; |
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case STAT_CLIENT: |
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/* |
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* Only opers see users if there is a wildcard |
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* but anyone can see all the opers. |
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*/ |
393 |
if ((IsOper(source_p) && |
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(MyClient(source_p) || !(dow && IsInvisible(target_p)))) |
395 |
|| !dow || IsOper(target_p)) |
396 |
{ |
397 |
if (IsAdmin(target_p) && !ConfigFileEntry.hide_spoof_ips) |
398 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
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from, to, class_name, name, |
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IsOperAdmin(source_p) ? target_p->sockhost : "255.255.255.255", |
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CurrentTime - target_p->lasttime, |
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CurrentTime - target_p->localClient->last); |
403 |
|
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else if (IsOper(target_p)) |
405 |
{ |
406 |
if (ConfigFileEntry.hide_spoof_ips) |
407 |
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); |
412 |
else |
413 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
414 |
from, to, class_name, name, |
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MyOper(source_p) ? target_p->sockhost : |
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(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
417 |
CurrentTime - target_p->lasttime, |
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CurrentTime - target_p->localClient->last); |
419 |
} |
420 |
else |
421 |
{ |
422 |
const char *format_str=NULL; |
423 |
if (IsOper(source_p) && IsCaptured(target_p)) |
424 |
format_str = form_str(RPL_TRACECAPTURED); |
425 |
else |
426 |
format_str = form_str(RPL_TRACEUSER); |
427 |
|
428 |
if (ConfigFileEntry.hide_spoof_ips) |
429 |
sendto_one(source_p, format_str, |
430 |
from, to, class_name, name, |
431 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
432 |
CurrentTime - target_p->lasttime, |
433 |
CurrentTime - target_p->localClient->last); |
434 |
else |
435 |
sendto_one(source_p, format_str, |
436 |
from, to, class_name, name, |
437 |
MyOper(source_p) ? target_p->sockhost : |
438 |
(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
439 |
CurrentTime - target_p->lasttime, |
440 |
CurrentTime - target_p->localClient->last); |
441 |
} |
442 |
} |
443 |
break; |
444 |
case STAT_SERVER: |
445 |
{ |
446 |
int clients = 0; |
447 |
int servers = 0; |
448 |
|
449 |
trace_get_dependent(&servers, &clients, target_p); |
450 |
|
451 |
if (!IsOperAdmin(source_p)) |
452 |
name = get_client_name(target_p, MASK_IP); |
453 |
|
454 |
sendto_one(source_p, form_str(RPL_TRACESERVER), |
455 |
from, to, class_name, servers, |
456 |
clients, name, *(target_p->serv->by) ? |
457 |
target_p->serv->by : "*", "*", |
458 |
me.name, CurrentTime - target_p->lasttime); |
459 |
break; |
460 |
} |
461 |
|
462 |
default: /* ...we actually shouldn't come here... --msa */ |
463 |
sendto_one(source_p, form_str(RPL_TRACENEWTYPE), |
464 |
from, to, name); |
465 |
break; |
466 |
} |
467 |
} |