| 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 |
* |
| 12 |
* 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 |
| 21 |
* |
| 22 |
* $Id$ |
| 23 |
*/ |
| 24 |
|
| 25 |
#include "stdinc.h" |
| 26 |
#include "list.h" |
| 27 |
#include "client.h" |
| 28 |
#include "hash.h" |
| 29 |
#include "irc_string.h" |
| 30 |
#include "ircd.h" |
| 31 |
#include "numeric.h" |
| 32 |
#include "s_bsd.h" |
| 33 |
#include "s_serv.h" |
| 34 |
#include "send.h" |
| 35 |
#include "parse.h" |
| 36 |
#include "modules.h" |
| 37 |
#include "conf.h" |
| 38 |
|
| 39 |
|
| 40 |
static void do_actual_trace(struct Client *, int, char *[]); |
| 41 |
static void report_this_status(struct Client *, struct Client *, int); |
| 42 |
|
| 43 |
static void |
| 44 |
trace_get_dependent(int *const server, |
| 45 |
int *const client, const struct Client *target_p) |
| 46 |
{ |
| 47 |
const dlink_node *ptr = NULL; |
| 48 |
|
| 49 |
(*server)++; |
| 50 |
(*client) += dlink_list_length(&target_p->serv->client_list); |
| 51 |
|
| 52 |
DLINK_FOREACH(ptr, target_p->serv->server_list.head) |
| 53 |
trace_get_dependent(server, client, ptr->data); |
| 54 |
} |
| 55 |
|
| 56 |
/* |
| 57 |
* m_trace() |
| 58 |
* |
| 59 |
* parv[0] = sender prefix |
| 60 |
* parv[1] = target client/server to trace |
| 61 |
*/ |
| 62 |
static void |
| 63 |
m_trace(struct Client *client_p, struct Client *source_p, |
| 64 |
int parc, char *parv[]) |
| 65 |
{ |
| 66 |
const char *tname; |
| 67 |
|
| 68 |
if (parc > 1) |
| 69 |
tname = parv[1]; |
| 70 |
else |
| 71 |
tname = me.name; |
| 72 |
|
| 73 |
sendto_one(source_p, form_str(RPL_ENDOFTRACE), |
| 74 |
me.name, source_p->name, tname); |
| 75 |
} |
| 76 |
|
| 77 |
|
| 78 |
/* mo_trace() |
| 79 |
* parv[0] = sender prefix |
| 80 |
* parv[1] = servername |
| 81 |
*/ |
| 82 |
static void |
| 83 |
mo_trace(struct Client *client_p, struct Client *source_p, |
| 84 |
int parc, char *parv[]) |
| 85 |
{ |
| 86 |
dlink_node *ptr; |
| 87 |
const char *tname; |
| 88 |
const char *from, *to; |
| 89 |
|
| 90 |
if (parc > 2) |
| 91 |
if (hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv)) |
| 92 |
return; |
| 93 |
|
| 94 |
if (parc > 1) |
| 95 |
tname = parv[1]; |
| 96 |
else |
| 97 |
tname = me.name; |
| 98 |
|
| 99 |
if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
| 100 |
{ |
| 101 |
from = me.id; |
| 102 |
to = source_p->id; |
| 103 |
} |
| 104 |
else |
| 105 |
{ |
| 106 |
from = me.name; |
| 107 |
to = source_p->name; |
| 108 |
} |
| 109 |
|
| 110 |
switch (hunt_server(client_p, source_p, ":%s TRACE :%s", 1, parc, parv)) |
| 111 |
{ |
| 112 |
case HUNTED_PASS: /* note: gets here only if parv[1] exists */ |
| 113 |
{ |
| 114 |
struct Client *ac2ptr = NULL; |
| 115 |
|
| 116 |
if ((ac2ptr = hash_find_client(tname)) == NULL) |
| 117 |
{ |
| 118 |
DLINK_FOREACH(ptr, global_client_list.head) |
| 119 |
{ |
| 120 |
ac2ptr = ptr->data; |
| 121 |
|
| 122 |
if (match(tname, ac2ptr->name)) |
| 123 |
break; |
| 124 |
else |
| 125 |
ac2ptr = NULL; |
| 126 |
} |
| 127 |
} |
| 128 |
|
| 129 |
if (ac2ptr != NULL) |
| 130 |
sendto_one(source_p, form_str(RPL_TRACELINK), from, to, |
| 131 |
ircd_version, tname, ac2ptr->from->name); |
| 132 |
else |
| 133 |
sendto_one(source_p, form_str(RPL_TRACELINK), from, to, |
| 134 |
ircd_version, tname, "ac2ptr_is_NULL!!"); |
| 135 |
return; |
| 136 |
} |
| 137 |
|
| 138 |
case HUNTED_ISME: |
| 139 |
do_actual_trace(source_p, parc, parv); |
| 140 |
break; |
| 141 |
default: |
| 142 |
return; |
| 143 |
} |
| 144 |
} |
| 145 |
|
| 146 |
/* |
| 147 |
** ms_trace |
| 148 |
** parv[0] = sender prefix |
| 149 |
** parv[1] = servername |
| 150 |
*/ |
| 151 |
static void |
| 152 |
ms_trace(struct Client *client_p, struct Client *source_p, |
| 153 |
int parc, char *parv[]) |
| 154 |
{ |
| 155 |
if (hunt_server(client_p, source_p, ":%s TRACE %s :%s", 2, parc, parv)) |
| 156 |
return; |
| 157 |
|
| 158 |
if (HasUMode(source_p, UMODE_OPER)) |
| 159 |
mo_trace(client_p, source_p, parc, parv); |
| 160 |
} |
| 161 |
|
| 162 |
static void |
| 163 |
do_actual_trace(struct Client *source_p, int parc, char *parv[]) |
| 164 |
{ |
| 165 |
struct Client *target_p = NULL; |
| 166 |
struct ConfItem *conf; |
| 167 |
struct ClassItem *cltmp; |
| 168 |
int doall = 0; |
| 169 |
int wilds, dow; |
| 170 |
dlink_node *ptr; |
| 171 |
const char *from, *to, *tname; |
| 172 |
|
| 173 |
if (parc > 1) |
| 174 |
tname = parv[1]; |
| 175 |
else |
| 176 |
tname = me.name; |
| 177 |
|
| 178 |
if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
| 179 |
{ |
| 180 |
from = me.id; |
| 181 |
to = source_p->id; |
| 182 |
} |
| 183 |
else |
| 184 |
{ |
| 185 |
from = me.name; |
| 186 |
to = source_p->name; |
| 187 |
} |
| 188 |
|
| 189 |
sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE, |
| 190 |
"TRACE requested by %s (%s@%s) [%s]", |
| 191 |
source_p->name, source_p->username, |
| 192 |
source_p->host, source_p->servptr->name); |
| 193 |
|
| 194 |
if (match(tname, me.name)) |
| 195 |
doall = 1; |
| 196 |
else if (!MyClient(source_p) && !strcmp(tname, me.id)) |
| 197 |
{ |
| 198 |
doall = 1; |
| 199 |
tname = me.name; |
| 200 |
} |
| 201 |
|
| 202 |
wilds = !parv[1] || has_wildcards(tname); |
| 203 |
dow = wilds || doall; |
| 204 |
|
| 205 |
set_time(); |
| 206 |
if (!HasUMode(source_p, UMODE_OPER) || !dow) /* non-oper traces must be full nicks */ |
| 207 |
/* lets also do this for opers tracing nicks */ |
| 208 |
{ |
| 209 |
const char *name; |
| 210 |
const char *class_name; |
| 211 |
|
| 212 |
target_p = hash_find_client(tname); |
| 213 |
|
| 214 |
if (target_p && IsClient(target_p)) |
| 215 |
{ |
| 216 |
name = get_client_name(target_p, HIDE_IP); |
| 217 |
class_name = get_client_class(target_p); |
| 218 |
|
| 219 |
if (HasUMode(target_p, UMODE_OPER)) |
| 220 |
{ |
| 221 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 222 |
from, to, class_name, name, |
| 223 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 224 |
CurrentTime - target_p->localClient->lasttime, |
| 225 |
CurrentTime - target_p->localClient->last_privmsg); |
| 226 |
} |
| 227 |
else |
| 228 |
{ |
| 229 |
sendto_one(source_p,form_str(RPL_TRACEUSER), |
| 230 |
from, to, class_name, name, |
| 231 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 232 |
CurrentTime - target_p->localClient->lasttime, |
| 233 |
CurrentTime - target_p->localClient->last_privmsg); |
| 234 |
} |
| 235 |
} |
| 236 |
|
| 237 |
sendto_one(source_p, form_str(RPL_ENDOFTRACE), |
| 238 |
from, to, tname); |
| 239 |
return; |
| 240 |
} |
| 241 |
|
| 242 |
/* report all direct connections */ |
| 243 |
DLINK_FOREACH(ptr, local_client_list.head) |
| 244 |
{ |
| 245 |
target_p = ptr->data; |
| 246 |
|
| 247 |
if (HasUMode(target_p, UMODE_INVISIBLE) && dow && |
| 248 |
!(MyConnect(source_p) && HasUMode(source_p, UMODE_OPER)) && |
| 249 |
!HasUMode(target_p, UMODE_OPER) && (target_p != source_p)) |
| 250 |
continue; |
| 251 |
if (!doall && wilds && !match(tname, target_p->name)) |
| 252 |
continue; |
| 253 |
if (!dow && irccmp(tname, target_p->name)) |
| 254 |
continue; |
| 255 |
|
| 256 |
report_this_status(source_p, target_p, dow); |
| 257 |
} |
| 258 |
|
| 259 |
DLINK_FOREACH(ptr, serv_list.head) |
| 260 |
{ |
| 261 |
target_p = ptr->data; |
| 262 |
|
| 263 |
if (!doall && wilds && !match(tname, target_p->name)) |
| 264 |
continue; |
| 265 |
if (!dow && irccmp(tname, target_p->name)) |
| 266 |
continue; |
| 267 |
|
| 268 |
report_this_status(source_p, target_p, dow); |
| 269 |
} |
| 270 |
|
| 271 |
/* This section is to report the unknowns */ |
| 272 |
DLINK_FOREACH(ptr, unknown_list.head) |
| 273 |
{ |
| 274 |
target_p = ptr->data; |
| 275 |
|
| 276 |
if (!doall && wilds && !match(tname, target_p->name)) |
| 277 |
continue; |
| 278 |
if (!dow && irccmp(tname, target_p->name)) |
| 279 |
continue; |
| 280 |
|
| 281 |
report_this_status(source_p, target_p, dow); |
| 282 |
} |
| 283 |
|
| 284 |
DLINK_FOREACH(ptr, class_items.head) |
| 285 |
{ |
| 286 |
conf = ptr->data; |
| 287 |
cltmp = map_to_conf(conf); |
| 288 |
|
| 289 |
if (cltmp->curr_user_count > 0) |
| 290 |
sendto_one(source_p, form_str(RPL_TRACECLASS), |
| 291 |
from, to, conf->name, cltmp->curr_user_count); |
| 292 |
} |
| 293 |
|
| 294 |
sendto_one(source_p, form_str(RPL_ENDOFTRACE), from, to, tname); |
| 295 |
} |
| 296 |
|
| 297 |
/* report_this_status() |
| 298 |
* |
| 299 |
* inputs - pointer to client to report to |
| 300 |
* - pointer to client to report about |
| 301 |
* output - counter of number of hits |
| 302 |
* side effects - NONE |
| 303 |
*/ |
| 304 |
static void |
| 305 |
report_this_status(struct Client *source_p, struct Client *target_p, int dow) |
| 306 |
{ |
| 307 |
const char *name; |
| 308 |
const char *class_name; |
| 309 |
const char *from, *to; |
| 310 |
|
| 311 |
if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p)) |
| 312 |
{ |
| 313 |
from = me.id; |
| 314 |
to = source_p->id; |
| 315 |
} |
| 316 |
else |
| 317 |
{ |
| 318 |
from = me.name; |
| 319 |
to = source_p->name; |
| 320 |
} |
| 321 |
|
| 322 |
name = get_client_name(target_p, HIDE_IP); |
| 323 |
class_name = get_client_class(target_p); |
| 324 |
|
| 325 |
set_time(); |
| 326 |
|
| 327 |
switch (target_p->status) |
| 328 |
{ |
| 329 |
case STAT_CONNECTING: |
| 330 |
sendto_one(source_p, form_str(RPL_TRACECONNECTING), |
| 331 |
from, to, class_name, |
| 332 |
HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name); |
| 333 |
break; |
| 334 |
case STAT_HANDSHAKE: |
| 335 |
sendto_one(source_p, form_str(RPL_TRACEHANDSHAKE), |
| 336 |
from, to, class_name, |
| 337 |
HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name); |
| 338 |
break; |
| 339 |
case STAT_ME: |
| 340 |
break; |
| 341 |
case STAT_UNKNOWN: |
| 342 |
/* added time -Taner */ |
| 343 |
sendto_one(source_p, form_str(RPL_TRACEUNKNOWN), |
| 344 |
from, to, class_name, name, target_p->sockhost, |
| 345 |
target_p->localClient->firsttime ? /* TBD: can't be 0 */ |
| 346 |
CurrentTime - target_p->localClient->firsttime : -1); |
| 347 |
break; |
| 348 |
case STAT_CLIENT: |
| 349 |
/* |
| 350 |
* Only opers see users if there is a wildcard |
| 351 |
* but anyone can see all the opers. |
| 352 |
*/ |
| 353 |
if ((HasUMode(source_p, UMODE_OPER) && |
| 354 |
(MyClient(source_p) || !(dow && HasUMode(target_p, UMODE_INVISIBLE)))) |
| 355 |
|| !dow || HasUMode(target_p, UMODE_OPER)) |
| 356 |
{ |
| 357 |
if (HasUMode(target_p, UMODE_ADMIN) && !ConfigFileEntry.hide_spoof_ips) |
| 358 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 359 |
from, to, class_name, name, |
| 360 |
HasUMode(source_p, UMODE_ADMIN) ? target_p->sockhost : "255.255.255.255", |
| 361 |
CurrentTime - target_p->localClient->lasttime, |
| 362 |
CurrentTime - target_p->localClient->last_privmsg); |
| 363 |
|
| 364 |
else if (HasUMode(target_p, UMODE_OPER)) |
| 365 |
{ |
| 366 |
if (ConfigFileEntry.hide_spoof_ips) |
| 367 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 368 |
from, to, class_name, name, |
| 369 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 370 |
CurrentTime - target_p->localClient->lasttime, |
| 371 |
CurrentTime - target_p->localClient->last_privmsg); |
| 372 |
else |
| 373 |
sendto_one(source_p, form_str(RPL_TRACEOPERATOR), |
| 374 |
from, to, class_name, name, |
| 375 |
MyOper(source_p) ? target_p->sockhost : |
| 376 |
(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
| 377 |
CurrentTime - target_p->localClient->lasttime, |
| 378 |
CurrentTime - target_p->localClient->last_privmsg); |
| 379 |
} |
| 380 |
else |
| 381 |
{ |
| 382 |
if (ConfigFileEntry.hide_spoof_ips) |
| 383 |
sendto_one(source_p, form_str(RPL_TRACEUSER), |
| 384 |
from, to, class_name, name, |
| 385 |
IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost, |
| 386 |
CurrentTime - target_p->localClient->lasttime, |
| 387 |
CurrentTime - target_p->localClient->last_privmsg); |
| 388 |
else |
| 389 |
sendto_one(source_p, form_str(RPL_TRACEUSER), |
| 390 |
from, to, class_name, name, |
| 391 |
MyOper(source_p) ? target_p->sockhost : |
| 392 |
(IsIPSpoof(target_p) ? "255.255.255.255" : target_p->sockhost), |
| 393 |
CurrentTime - target_p->localClient->lasttime, |
| 394 |
CurrentTime - target_p->localClient->last_privmsg); |
| 395 |
} |
| 396 |
} |
| 397 |
break; |
| 398 |
case STAT_SERVER: |
| 399 |
{ |
| 400 |
int clients = 0; |
| 401 |
int servers = 0; |
| 402 |
|
| 403 |
trace_get_dependent(&servers, &clients, target_p); |
| 404 |
|
| 405 |
if (!HasUMode(source_p, UMODE_ADMIN)) |
| 406 |
name = get_client_name(target_p, MASK_IP); |
| 407 |
|
| 408 |
sendto_one(source_p, form_str(RPL_TRACESERVER), |
| 409 |
from, to, class_name, servers, |
| 410 |
clients, name, *(target_p->serv->by) ? |
| 411 |
target_p->serv->by : "*", "*", |
| 412 |
me.name, CurrentTime - target_p->localClient->lasttime); |
| 413 |
break; |
| 414 |
} |
| 415 |
|
| 416 |
default: /* ...we actually shouldn't come here... --msa */ |
| 417 |
sendto_one(source_p, form_str(RPL_TRACENEWTYPE), |
| 418 |
from, to, name); |
| 419 |
break; |
| 420 |
} |
| 421 |
} |
| 422 |
|
| 423 |
static struct Message trace_msgtab = { |
| 424 |
"TRACE", 0, 0, 0, MAXPARA, MFLG_SLOW, 0, |
| 425 |
{ m_unregistered, m_trace, ms_trace, m_ignore, mo_trace, m_ignore } |
| 426 |
}; |
| 427 |
|
| 428 |
static void |
| 429 |
module_init(void) |
| 430 |
{ |
| 431 |
mod_add_cmd(&trace_msgtab); |
| 432 |
} |
| 433 |
|
| 434 |
static void |
| 435 |
module_exit(void) |
| 436 |
{ |
| 437 |
mod_del_cmd(&trace_msgtab); |
| 438 |
} |
| 439 |
|
| 440 |
struct module module_entry = { |
| 441 |
.node = { NULL, NULL, NULL }, |
| 442 |
.name = NULL, |
| 443 |
.version = "$Revision$", |
| 444 |
.handle = NULL, |
| 445 |
.modinit = module_init, |
| 446 |
.modexit = module_exit, |
| 447 |
.flags = 0 |
| 448 |
}; |
