| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
| 3 |
* m_sjoin.c: Joins a user to a channel. |
| 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 "handlers.h" |
| 27 |
#include "channel.h" |
| 28 |
#include "channel_mode.h" |
| 29 |
#include "client.h" |
| 30 |
#include "hash.h" |
| 31 |
#include "ircd.h" |
| 32 |
#include "numeric.h" |
| 33 |
#include "send.h" |
| 34 |
#include "common.h" |
| 35 |
#include "msg.h" |
| 36 |
#include "parse.h" |
| 37 |
#include "conf/modules.h" |
| 38 |
#include "s_serv.h" |
| 39 |
|
| 40 |
static void ms_sjoin(struct Client *, struct Client *, int, char *[]); |
| 41 |
|
| 42 |
struct Message sjoin_msgtab = { |
| 43 |
"SJOIN", 0, 0, 0, 0, MFLG_SLOW, 0, |
| 44 |
{ m_unregistered, m_ignore, ms_sjoin, m_ignore, m_ignore, m_ignore } |
| 45 |
}; |
| 46 |
|
| 47 |
INIT_MODULE(m_sjoin, "$Revision$") |
| 48 |
{ |
| 49 |
mod_add_cmd(&sjoin_msgtab); |
| 50 |
} |
| 51 |
|
| 52 |
CLEANUP_MODULE |
| 53 |
{ |
| 54 |
mod_del_cmd(&sjoin_msgtab); |
| 55 |
} |
| 56 |
|
| 57 |
static char modebuf[MODEBUFLEN]; |
| 58 |
static char parabuf[MODEBUFLEN]; |
| 59 |
static char sendbuf[MODEBUFLEN]; |
| 60 |
static const char *para[MAXMODEPARAMS]; |
| 61 |
static char *mbuf; |
| 62 |
static int pargs; |
| 63 |
|
| 64 |
static void set_final_mode(struct Mode *, struct Mode *); |
| 65 |
static void remove_our_modes(struct Channel *, struct Client *); |
| 66 |
static void remove_a_mode(struct Channel *, struct Client *, int, char); |
| 67 |
static void remove_ban_list(struct Channel *, struct Client *, dlink_list *, char, int); |
| 68 |
|
| 69 |
/* ms_sjoin() |
| 70 |
* |
| 71 |
* parv[0] - sender |
| 72 |
* parv[1] - TS |
| 73 |
* parv[2] - channel |
| 74 |
* parv[3] - modes + n arguments (key and/or limit) |
| 75 |
* parv[4+n] - flags+nick list (all in one parameter) |
| 76 |
* |
| 77 |
* process a SJOIN, taking the TS's into account to either ignore the |
| 78 |
* incoming modes or undo the existing ones or merge them, and JOIN |
| 79 |
* all the specified users while sending JOIN/MODEs to local clients |
| 80 |
*/ |
| 81 |
static void |
| 82 |
ms_sjoin(struct Client *client_p, struct Client *source_p, |
| 83 |
int parc, char *parv[]) |
| 84 |
{ |
| 85 |
struct Channel *chptr; |
| 86 |
struct Client *target_p; |
| 87 |
time_t newts; |
| 88 |
time_t oldts; |
| 89 |
time_t tstosend; |
| 90 |
struct Mode mode, *oldmode; |
| 91 |
int args = 0; |
| 92 |
char keep_our_modes = YES; |
| 93 |
char keep_new_modes = YES; |
| 94 |
char have_many_nicks = NO; |
| 95 |
int lcount; |
| 96 |
char nick_prefix[4]; |
| 97 |
char uid_prefix[4]; |
| 98 |
char *np, *up; |
| 99 |
int len_nick = 0; |
| 100 |
int len_uid = 0; |
| 101 |
int isnew = 0; |
| 102 |
int buflen = 0; |
| 103 |
int slen; |
| 104 |
unsigned int fl; |
| 105 |
char *s; |
| 106 |
char *sptr; |
| 107 |
char nick_buf[IRCD_BUFSIZE]; /* buffer for modes and prefix */ |
| 108 |
char uid_buf[IRCD_BUFSIZE]; /* buffer for modes/prefixes for CAP_TS6 servers */ |
| 109 |
char *nick_ptr, *uid_ptr; /* pointers used for making the two mode/prefix buffers */ |
| 110 |
char *p; /* pointer used making sjbuf */ |
| 111 |
dlink_node *m; |
| 112 |
const char *servername = (ConfigServerHide.hide_servers || IsHidden(source_p)) ? |
| 113 |
me.name : source_p->name; |
| 114 |
|
| 115 |
if (IsClient(source_p) || parc < 5) |
| 116 |
return; |
| 117 |
|
| 118 |
/* SJOIN's for local channels can't happen. */ |
| 119 |
if (*parv[2] != '#') |
| 120 |
return; |
| 121 |
|
| 122 |
if (!check_channel_name(parv[2], 0)) |
| 123 |
{ |
| 124 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
| 125 |
"*** Too long or invalid channel name from %s: %s", |
| 126 |
client_p->name, parv[2]); |
| 127 |
return; |
| 128 |
} |
| 129 |
|
| 130 |
modebuf[0] = '\0'; |
| 131 |
mbuf = modebuf; |
| 132 |
pargs = 0; |
| 133 |
newts = atol(parv[1]); |
| 134 |
|
| 135 |
mode.mode = 0; |
| 136 |
mode.limit = 0; |
| 137 |
mode.key[0] = '\0'; |
| 138 |
s = parv[3]; |
| 139 |
|
| 140 |
while (*s) |
| 141 |
{ |
| 142 |
switch (*(s++)) |
| 143 |
{ |
| 144 |
case 't': |
| 145 |
mode.mode |= MODE_TOPICLIMIT; |
| 146 |
break; |
| 147 |
case 'n': |
| 148 |
mode.mode |= MODE_NOPRIVMSGS; |
| 149 |
break; |
| 150 |
case 's': |
| 151 |
mode.mode |= MODE_SECRET; |
| 152 |
break; |
| 153 |
case 'm': |
| 154 |
mode.mode |= MODE_MODERATED; |
| 155 |
break; |
| 156 |
case 'i': |
| 157 |
mode.mode |= MODE_INVITEONLY; |
| 158 |
break; |
| 159 |
case 'p': |
| 160 |
mode.mode |= MODE_PARANOID; |
| 161 |
break; |
| 162 |
case 'k': |
| 163 |
strlcpy(mode.key, parv[4 + args], sizeof(mode.key)); |
| 164 |
args++; |
| 165 |
if (parc < 5+args) |
| 166 |
return; |
| 167 |
break; |
| 168 |
case 'l': |
| 169 |
mode.limit = atoi(parv[4 + args]); |
| 170 |
args++; |
| 171 |
if (parc < 5+args) |
| 172 |
return; |
| 173 |
break; |
| 174 |
} |
| 175 |
} |
| 176 |
|
| 177 |
parabuf[0] = '\0'; |
| 178 |
|
| 179 |
if ((chptr = hash_find_channel(parv[2])) == NULL) |
| 180 |
{ |
| 181 |
isnew = 1; |
| 182 |
chptr = make_channel(parv[2]); |
| 183 |
} |
| 184 |
|
| 185 |
oldts = chptr->channelts; |
| 186 |
oldmode = &chptr->mode; |
| 187 |
|
| 188 |
if (ConfigFileEntry.ignore_bogus_ts) |
| 189 |
{ |
| 190 |
if (newts < 800000000) |
| 191 |
{ |
| 192 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, |
| 193 |
"*** Bogus TS %lu on %s ignored from %s", |
| 194 |
(unsigned long)newts, chptr->chname, |
| 195 |
client_p->name); |
| 196 |
|
| 197 |
newts = (oldts == 0) ? 0 : 800000000; |
| 198 |
} |
| 199 |
} |
| 200 |
else |
| 201 |
{ |
| 202 |
if (!newts && !isnew && oldts) |
| 203 |
{ |
| 204 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
| 205 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to 0", |
| 206 |
me.name, chptr->chname, chptr->chname, (unsigned long)oldts); |
| 207 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
| 208 |
"Server %s changing TS on %s from %lu to 0", |
| 209 |
source_p->name, chptr->chname, (unsigned long)oldts); |
| 210 |
} |
| 211 |
} |
| 212 |
|
| 213 |
if (isnew) |
| 214 |
chptr->channelts = tstosend = newts; |
| 215 |
else if (newts == 0 || oldts == 0) |
| 216 |
chptr->channelts = tstosend = 0; |
| 217 |
else if (newts == oldts) |
| 218 |
tstosend = oldts; |
| 219 |
else if (newts < oldts) |
| 220 |
{ |
| 221 |
keep_our_modes = NO; |
| 222 |
chptr->channelts = tstosend = newts; |
| 223 |
} |
| 224 |
else |
| 225 |
{ |
| 226 |
keep_new_modes = NO; |
| 227 |
tstosend = oldts; |
| 228 |
} |
| 229 |
|
| 230 |
if (!keep_new_modes) |
| 231 |
mode = *oldmode; |
| 232 |
else if (keep_our_modes) |
| 233 |
{ |
| 234 |
mode.mode |= oldmode->mode; |
| 235 |
if (oldmode->limit > mode.limit) |
| 236 |
mode.limit = oldmode->limit; |
| 237 |
if (strcmp(mode.key, oldmode->key) < 0) |
| 238 |
strcpy(mode.key, oldmode->key); |
| 239 |
} |
| 240 |
|
| 241 |
set_final_mode(&mode, oldmode); |
| 242 |
chptr->mode = mode; |
| 243 |
|
| 244 |
/* Lost the TS, other side wins, so remove modes on this side */ |
| 245 |
if (!keep_our_modes) |
| 246 |
{ |
| 247 |
remove_our_modes(chptr, source_p); |
| 248 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
| 249 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to %lu", |
| 250 |
me.name, chptr->chname, chptr->chname, |
| 251 |
(unsigned long)oldts, (unsigned long)newts); |
| 252 |
} |
| 253 |
|
| 254 |
if (*modebuf != '\0') |
| 255 |
{ |
| 256 |
/* This _SHOULD_ be to ALL_MEMBERS |
| 257 |
* It contains only +imnpstlk, etc */ |
| 258 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s %s", |
| 259 |
servername, chptr->chname, modebuf, parabuf); |
| 260 |
} |
| 261 |
|
| 262 |
if (parv[3][0] != '0' && keep_new_modes) |
| 263 |
{ |
| 264 |
channel_modes(chptr, source_p, modebuf, parabuf); |
| 265 |
} |
| 266 |
else |
| 267 |
{ |
| 268 |
modebuf[0] = '0'; |
| 269 |
modebuf[1] = '\0'; |
| 270 |
} |
| 271 |
|
| 272 |
buflen = ircsprintf(nick_buf, ":%s SJOIN %lu %s %s %s:", |
| 273 |
source_p->name, (unsigned long)tstosend, |
| 274 |
chptr->chname, modebuf, parabuf); |
| 275 |
nick_ptr = nick_buf + buflen; |
| 276 |
|
| 277 |
buflen = ircsprintf(uid_buf, ":%s SJOIN %lu %s %s %s:", |
| 278 |
ID(source_p), (unsigned long)tstosend, |
| 279 |
chptr->chname, modebuf, parabuf); |
| 280 |
uid_ptr = uid_buf + buflen; |
| 281 |
|
| 282 |
/* check we can fit a nick on the end, as well as \r\n and a prefix " |
| 283 |
* @%+", and a space. |
| 284 |
*/ |
| 285 |
if (buflen >= (IRCD_BUFSIZE - LIBIO_MAX(NICKLEN, IDLEN) - 2 - 3 - 1)) |
| 286 |
{ |
| 287 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
| 288 |
"Long SJOIN from server: %s(via %s) (ignored)", |
| 289 |
source_p->name, client_p->name); |
| 290 |
return; |
| 291 |
} |
| 292 |
|
| 293 |
mbuf = modebuf; |
| 294 |
sendbuf[0] = '\0'; |
| 295 |
pargs = 0; |
| 296 |
|
| 297 |
*mbuf++ = '+'; |
| 298 |
|
| 299 |
s = parv[args + 4]; |
| 300 |
while (*s == ' ') |
| 301 |
s++; |
| 302 |
if ((p = strchr(s, ' ')) != NULL) |
| 303 |
{ |
| 304 |
*p++ = '\0'; |
| 305 |
while (*p == ' ') |
| 306 |
p++; |
| 307 |
have_many_nicks = *p; |
| 308 |
} |
| 309 |
|
| 310 |
while (*s) |
| 311 |
{ |
| 312 |
int valid_mode = YES; |
| 313 |
fl = 0; |
| 314 |
|
| 315 |
do |
| 316 |
{ |
| 317 |
switch (*s) |
| 318 |
{ |
| 319 |
case '@': |
| 320 |
fl |= CHFL_CHANOP; |
| 321 |
s++; |
| 322 |
break; |
| 323 |
#ifdef HALFOPS |
| 324 |
case '%': |
| 325 |
fl |= CHFL_HALFOP; |
| 326 |
s++; |
| 327 |
break; |
| 328 |
#endif |
| 329 |
case '+': |
| 330 |
fl |= CHFL_VOICE; |
| 331 |
s++; |
| 332 |
break; |
| 333 |
default: |
| 334 |
valid_mode = NO; |
| 335 |
break; |
| 336 |
} |
| 337 |
} while (valid_mode); |
| 338 |
|
| 339 |
target_p = find_chasing(source_p, s, NULL); |
| 340 |
|
| 341 |
/* |
| 342 |
* if the client doesnt exist, or if its fake direction/server, skip. |
| 343 |
* we cannot send ERR_NOSUCHNICK here because if its a UID, we cannot |
| 344 |
* lookup the nick, and its better to never send the numeric than only |
| 345 |
* sometimes. |
| 346 |
*/ |
| 347 |
if (target_p == NULL || |
| 348 |
target_p->from != client_p || |
| 349 |
!IsClient(target_p)) |
| 350 |
{ |
| 351 |
goto nextnick; |
| 352 |
} |
| 353 |
|
| 354 |
len_nick = strlen(target_p->name); |
| 355 |
len_uid = strlen(ID(target_p)); |
| 356 |
|
| 357 |
np = nick_prefix; |
| 358 |
up = uid_prefix; |
| 359 |
|
| 360 |
if (keep_new_modes) |
| 361 |
{ |
| 362 |
if (fl & CHFL_CHANOP) |
| 363 |
{ |
| 364 |
*np++ = '@'; |
| 365 |
*up++ = '@'; |
| 366 |
len_nick++; |
| 367 |
len_uid++; |
| 368 |
} |
| 369 |
#ifdef HALFOPS |
| 370 |
if (fl & CHFL_HALFOP) |
| 371 |
{ |
| 372 |
*np++ = '%'; |
| 373 |
*up++ = '%'; |
| 374 |
len_nick++; |
| 375 |
len_uid++; |
| 376 |
} |
| 377 |
#endif |
| 378 |
if (fl & CHFL_VOICE) |
| 379 |
{ |
| 380 |
*np++ = '+'; |
| 381 |
*up++ = '+'; |
| 382 |
len_nick++; |
| 383 |
len_uid++; |
| 384 |
} |
| 385 |
} |
| 386 |
else |
| 387 |
{ |
| 388 |
if (fl & (CHFL_CHANOP|CHFL_HALFOP)) |
| 389 |
fl = CHFL_DEOPPED; |
| 390 |
else |
| 391 |
fl = 0; |
| 392 |
} |
| 393 |
|
| 394 |
*np = *up = '\0'; |
| 395 |
|
| 396 |
if ((nick_ptr - nick_buf + len_nick) > (IRCD_BUFSIZE - 2)) |
| 397 |
{ |
| 398 |
sendto_server(client_p, NULL, chptr, 0, CAP_TS6, "%s", nick_buf); |
| 399 |
|
| 400 |
buflen = ircsprintf(nick_buf, ":%s SJOIN %lu %s %s %s:", |
| 401 |
source_p->name, (unsigned long)tstosend, |
| 402 |
chptr->chname, modebuf, parabuf); |
| 403 |
nick_ptr = nick_buf + buflen; |
| 404 |
} |
| 405 |
|
| 406 |
nick_ptr += ircsprintf(nick_ptr, "%s%s ", nick_prefix, target_p->name); |
| 407 |
|
| 408 |
if ((uid_ptr - uid_buf + len_uid) > (IRCD_BUFSIZE - 2)) |
| 409 |
{ |
| 410 |
sendto_server(client_p, NULL, chptr, CAP_TS6, 0, "%s", uid_buf); |
| 411 |
|
| 412 |
buflen = ircsprintf(uid_buf, ":%s SJOIN %lu %s %s %s:", |
| 413 |
ID(source_p), (unsigned long)tstosend, |
| 414 |
chptr->chname, modebuf, parabuf); |
| 415 |
uid_ptr = uid_buf + buflen; |
| 416 |
} |
| 417 |
|
| 418 |
uid_ptr += ircsprintf(uid_ptr, "%s%s ", uid_prefix, ID(target_p)); |
| 419 |
|
| 420 |
if (!IsMember(target_p, chptr)) |
| 421 |
{ |
| 422 |
add_user_to_channel(chptr, target_p, fl, !have_many_nicks); |
| 423 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s", |
| 424 |
target_p->name, target_p->username, |
| 425 |
target_p->host, chptr->chname); |
| 426 |
} |
| 427 |
|
| 428 |
if (fl & CHFL_CHANOP) |
| 429 |
{ |
| 430 |
*mbuf++ = 'o'; |
| 431 |
para[pargs++] = target_p->name; |
| 432 |
|
| 433 |
if (pargs >= MAXMODEPARAMS) |
| 434 |
{ |
| 435 |
/* |
| 436 |
* Ok, the code is now going to "walk" through |
| 437 |
* sendbuf, filling in para strings. So, I will use sptr |
| 438 |
* to point into the sendbuf. |
| 439 |
* Notice, that ircsprintf() returns the number of chars |
| 440 |
* successfully inserted into string. |
| 441 |
* - Dianora |
| 442 |
*/ |
| 443 |
|
| 444 |
sptr = sendbuf; |
| 445 |
*mbuf = '\0'; |
| 446 |
for(lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
| 447 |
{ |
| 448 |
slen = ircsprintf(sptr, " %s", para[lcount]); /* see? */ |
| 449 |
sptr += slen; /* ready for next */ |
| 450 |
} |
| 451 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
| 452 |
servername, chptr->chname, modebuf, sendbuf); |
| 453 |
mbuf = modebuf; |
| 454 |
*mbuf++ = '+'; |
| 455 |
|
| 456 |
sendbuf[0] = '\0'; |
| 457 |
pargs = 0; |
| 458 |
} |
| 459 |
} |
| 460 |
#ifdef HALFOPS |
| 461 |
if (fl & CHFL_HALFOP) |
| 462 |
{ |
| 463 |
*mbuf++ = 'h'; |
| 464 |
para[pargs++] = target_p->name; |
| 465 |
|
| 466 |
if (pargs >= MAXMODEPARAMS) |
| 467 |
{ |
| 468 |
sptr = sendbuf; |
| 469 |
*mbuf = '\0'; |
| 470 |
for(lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
| 471 |
{ |
| 472 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
| 473 |
sptr += slen; |
| 474 |
} |
| 475 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
| 476 |
servername, chptr->chname, modebuf, sendbuf); |
| 477 |
|
| 478 |
mbuf = modebuf; |
| 479 |
*mbuf++ = '+'; |
| 480 |
|
| 481 |
sendbuf[0] = '\0'; |
| 482 |
pargs = 0; |
| 483 |
} |
| 484 |
} |
| 485 |
#endif |
| 486 |
if (fl & CHFL_VOICE) |
| 487 |
{ |
| 488 |
*mbuf++ = 'v'; |
| 489 |
para[pargs++] = target_p->name; |
| 490 |
|
| 491 |
if (pargs >= MAXMODEPARAMS) |
| 492 |
{ |
| 493 |
sptr = sendbuf; |
| 494 |
*mbuf = '\0'; |
| 495 |
for (lcount = 0; lcount < MAXMODEPARAMS; lcount++) |
| 496 |
{ |
| 497 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
| 498 |
sptr += slen; |
| 499 |
} |
| 500 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
| 501 |
servername, chptr->chname, modebuf, sendbuf); |
| 502 |
|
| 503 |
mbuf = modebuf; |
| 504 |
*mbuf++ = '+'; |
| 505 |
|
| 506 |
sendbuf[0] = '\0'; |
| 507 |
pargs = 0; |
| 508 |
} |
| 509 |
} |
| 510 |
|
| 511 |
nextnick: |
| 512 |
if ((s = p) == NULL) |
| 513 |
break; |
| 514 |
while (*s == ' ') |
| 515 |
s++; |
| 516 |
if ((p = strchr(s, ' ')) != NULL) |
| 517 |
{ |
| 518 |
*p++ = 0; |
| 519 |
while (*p == ' ') |
| 520 |
p++; |
| 521 |
} |
| 522 |
} |
| 523 |
|
| 524 |
*mbuf = '\0'; |
| 525 |
*(nick_ptr - 1) = '\0'; |
| 526 |
*(uid_ptr - 1) = '\0'; |
| 527 |
|
| 528 |
/* |
| 529 |
* checking for lcount < MAXMODEPARAMS at this time is wrong |
| 530 |
* since the code has already verified above that pargs < MAXMODEPARAMS |
| 531 |
* checking for para[lcount] != '\0' is also wrong, since |
| 532 |
* there is no place where para[lcount] is set! |
| 533 |
* - Dianora |
| 534 |
*/ |
| 535 |
|
| 536 |
if (pargs != 0) |
| 537 |
{ |
| 538 |
sptr = sendbuf; |
| 539 |
|
| 540 |
for (lcount = 0; lcount < pargs; lcount++) |
| 541 |
{ |
| 542 |
slen = ircsprintf(sptr, " %s", para[lcount]); |
| 543 |
sptr += slen; |
| 544 |
} |
| 545 |
|
| 546 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s%s", |
| 547 |
servername, chptr->chname, modebuf, sendbuf); |
| 548 |
} |
| 549 |
|
| 550 |
/* If this happens, its the result of a malformed SJOIN |
| 551 |
* a remnant from the old persistent channel code. *sigh* |
| 552 |
* Or it could be the result of a client just leaving |
| 553 |
* and leaving us with a channel formed just as the client parts. |
| 554 |
* - Dianora |
| 555 |
*/ |
| 556 |
|
| 557 |
if ((dlink_list_length(&chptr->members) == 0) && isnew) |
| 558 |
{ |
| 559 |
destroy_channel(chptr); |
| 560 |
return; |
| 561 |
} |
| 562 |
|
| 563 |
if (parv[4 + args][0] == '\0') |
| 564 |
return; |
| 565 |
|
| 566 |
/* relay the SJOIN to other servers */ |
| 567 |
DLINK_FOREACH(m, serv_list.head) |
| 568 |
{ |
| 569 |
target_p = m->data; |
| 570 |
|
| 571 |
if (target_p == client_p) |
| 572 |
continue; |
| 573 |
|
| 574 |
if (IsCapable(target_p, CAP_TS6)) |
| 575 |
sendto_one(target_p, "%s", uid_buf); |
| 576 |
else |
| 577 |
sendto_one(target_p, "%s", nick_buf); |
| 578 |
} |
| 579 |
|
| 580 |
if (HasID(source_p) && !keep_our_modes) |
| 581 |
{ |
| 582 |
if (dlink_list_length(&chptr->banlist) > 0) |
| 583 |
remove_ban_list(chptr, client_p, &chptr->banlist, |
| 584 |
'b', NOCAPS); |
| 585 |
|
| 586 |
if (dlink_list_length(&chptr->exceptlist) > 0) |
| 587 |
remove_ban_list(chptr, client_p, &chptr->exceptlist, |
| 588 |
'e', CAP_EX); |
| 589 |
|
| 590 |
if (dlink_list_length(&chptr->invexlist) > 0) |
| 591 |
remove_ban_list(chptr, client_p, &chptr->invexlist, |
| 592 |
'I', CAP_IE); |
| 593 |
clear_ban_cache(chptr); |
| 594 |
} |
| 595 |
} |
| 596 |
|
| 597 |
/* set_final_mode |
| 598 |
* |
| 599 |
* inputs - channel mode |
| 600 |
* - old channel mode |
| 601 |
* output - NONE |
| 602 |
* side effects - walk through all the channel modes turning off modes |
| 603 |
* that were on in oldmode but aren't on in mode. |
| 604 |
* Then walk through turning on modes that are on in mode |
| 605 |
* but were not set in oldmode. |
| 606 |
*/ |
| 607 |
|
| 608 |
static const struct mode_letter |
| 609 |
{ |
| 610 |
unsigned int mode; |
| 611 |
unsigned char letter; |
| 612 |
} flags[] = { |
| 613 |
{ MODE_NOPRIVMSGS, 'n' }, |
| 614 |
{ MODE_TOPICLIMIT, 't' }, |
| 615 |
{ MODE_SECRET, 's' }, |
| 616 |
{ MODE_MODERATED, 'm' }, |
| 617 |
{ MODE_INVITEONLY, 'i' }, |
| 618 |
{ MODE_PARANOID, 'p' }, |
| 619 |
{ 0, '\0' } |
| 620 |
}; |
| 621 |
|
| 622 |
static void |
| 623 |
set_final_mode(struct Mode *mode, struct Mode *oldmode) |
| 624 |
{ |
| 625 |
char *pbuf = parabuf; |
| 626 |
int len; |
| 627 |
int i; |
| 628 |
|
| 629 |
*mbuf++ = '-'; |
| 630 |
|
| 631 |
for (i = 0; flags[i].letter; i++) |
| 632 |
{ |
| 633 |
if ((flags[i].mode & oldmode->mode) && |
| 634 |
!(flags[i].mode & mode->mode)) |
| 635 |
*mbuf++ = flags[i].letter; |
| 636 |
} |
| 637 |
|
| 638 |
if (oldmode->limit != 0 && mode->limit == 0) |
| 639 |
*mbuf++ = 'l'; |
| 640 |
|
| 641 |
if (oldmode->key[0] && !mode->key[0]) |
| 642 |
{ |
| 643 |
*mbuf++ = 'k'; |
| 644 |
len = ircsprintf(pbuf, "%s ", oldmode->key); |
| 645 |
pbuf += len; |
| 646 |
pargs++; |
| 647 |
} |
| 648 |
|
| 649 |
if (*(mbuf-1) == '-') |
| 650 |
*(mbuf-1) = '+'; |
| 651 |
else |
| 652 |
*mbuf++ = '+'; |
| 653 |
|
| 654 |
for (i = 0; flags[i].letter; i++) |
| 655 |
{ |
| 656 |
if ((flags[i].mode & mode->mode) && |
| 657 |
!(flags[i].mode & oldmode->mode)) |
| 658 |
*mbuf++ = flags[i].letter; |
| 659 |
} |
| 660 |
|
| 661 |
if (mode->limit != 0 && oldmode->limit != mode->limit) |
| 662 |
{ |
| 663 |
*mbuf++ = 'l'; |
| 664 |
len = ircsprintf(pbuf, "%d ", mode->limit); |
| 665 |
pbuf += len; |
| 666 |
pargs++; |
| 667 |
} |
| 668 |
|
| 669 |
if (mode->key[0] && strcmp(oldmode->key, mode->key)) |
| 670 |
{ |
| 671 |
*mbuf++ = 'k'; |
| 672 |
len = ircsprintf(pbuf, "%s ", mode->key); |
| 673 |
pbuf += len; |
| 674 |
pargs++; |
| 675 |
} |
| 676 |
if (*(mbuf-1) == '+') |
| 677 |
*(mbuf-1) = '\0'; |
| 678 |
else |
| 679 |
*mbuf = '\0'; |
| 680 |
} |
| 681 |
|
| 682 |
/* remove_our_modes() |
| 683 |
* |
| 684 |
* inputs - pointer to channel to remove modes from |
| 685 |
* - client pointer |
| 686 |
* output - NONE |
| 687 |
* side effects - Go through the local members, remove all their |
| 688 |
* chanop modes etc., this side lost the TS. |
| 689 |
*/ |
| 690 |
static void |
| 691 |
remove_our_modes(struct Channel *chptr, struct Client *source_p) |
| 692 |
{ |
| 693 |
remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o'); |
| 694 |
#ifdef HALFOPS |
| 695 |
remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h'); |
| 696 |
#endif |
| 697 |
remove_a_mode(chptr, source_p, CHFL_VOICE, 'v'); |
| 698 |
} |
| 699 |
|
| 700 |
/* remove_a_mode() |
| 701 |
* |
| 702 |
* inputs - pointer to channel |
| 703 |
* - server or client removing the mode |
| 704 |
* - mask o/h/v mask to be removed |
| 705 |
* - flag o/h/v to be removed |
| 706 |
* output - NONE |
| 707 |
* side effects - remove ONE mode from all members of a channel |
| 708 |
*/ |
| 709 |
static void |
| 710 |
remove_a_mode(struct Channel *chptr, struct Client *source_p, |
| 711 |
int mask, char flag) |
| 712 |
{ |
| 713 |
dlink_node *ptr; |
| 714 |
struct Membership *ms; |
| 715 |
char lmodebuf[MODEBUFLEN]; |
| 716 |
char *sp=sendbuf; |
| 717 |
const char *lpara[MAXMODEPARAMS]; |
| 718 |
int count = 0; |
| 719 |
int i; |
| 720 |
int l; |
| 721 |
|
| 722 |
mbuf = lmodebuf; |
| 723 |
*mbuf++ = '-'; |
| 724 |
*sp = '\0'; |
| 725 |
|
| 726 |
DLINK_FOREACH(ptr, chptr->members.head) |
| 727 |
{ |
| 728 |
ms = ptr->data; |
| 729 |
|
| 730 |
if ((ms->flags & mask) == 0) |
| 731 |
continue; |
| 732 |
|
| 733 |
ms->flags &= ~mask; |
| 734 |
|
| 735 |
lpara[count++] = ms->client_p->name; |
| 736 |
|
| 737 |
*mbuf++ = flag; |
| 738 |
|
| 739 |
if (count >= MAXMODEPARAMS) |
| 740 |
{ |
| 741 |
for(i = 0; i < MAXMODEPARAMS; i++) |
| 742 |
{ |
| 743 |
l = ircsprintf(sp, " %s", lpara[i]); |
| 744 |
sp += l; |
| 745 |
} |
| 746 |
|
| 747 |
*mbuf = '\0'; |
| 748 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
| 749 |
":%s MODE %s %s%s", |
| 750 |
(IsHidden(source_p) || |
| 751 |
ConfigServerHide.hide_servers) ? |
| 752 |
me.name : source_p->name, |
| 753 |
chptr->chname, lmodebuf, sendbuf); |
| 754 |
mbuf = lmodebuf; |
| 755 |
*mbuf++ = '-'; |
| 756 |
count = 0; |
| 757 |
sp = sendbuf; |
| 758 |
*sp = '\0'; |
| 759 |
} |
| 760 |
} |
| 761 |
|
| 762 |
if (count != 0) |
| 763 |
{ |
| 764 |
*mbuf = '\0'; |
| 765 |
for(i = 0; i < count; i++) |
| 766 |
{ |
| 767 |
l = ircsprintf(sp, " %s", lpara[i]); |
| 768 |
sp += l; |
| 769 |
} |
| 770 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, |
| 771 |
":%s MODE %s %s%s", |
| 772 |
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? |
| 773 |
me.name : source_p->name, |
| 774 |
chptr->chname, lmodebuf, sendbuf); |
| 775 |
} |
| 776 |
} |
| 777 |
|
| 778 |
/* remove_ban_list() |
| 779 |
* |
| 780 |
* inputs - channel, source, list to remove, char of mode, caps required |
| 781 |
* outputs - none |
| 782 |
* side effects - given ban list is removed, modes are sent to local clients and |
| 783 |
* non-ts6 servers linked through another uplink other than source_p |
| 784 |
*/ |
| 785 |
static void |
| 786 |
remove_ban_list(struct Channel *chptr, struct Client *source_p, |
| 787 |
dlink_list *list, char c, int cap) |
| 788 |
{ |
| 789 |
char lmodebuf[MODEBUFLEN]; |
| 790 |
char lparabuf[IRCD_BUFSIZE]; |
| 791 |
struct Ban *banptr = NULL; |
| 792 |
dlink_node *ptr = NULL; |
| 793 |
dlink_node *next_ptr = NULL; |
| 794 |
char *pbuf = NULL; |
| 795 |
int count = 0; |
| 796 |
int cur_len, mlen, plen; |
| 797 |
|
| 798 |
pbuf = lparabuf; |
| 799 |
|
| 800 |
cur_len = mlen = ircsprintf(lmodebuf, ":%s MODE %s -", |
| 801 |
source_p->name, chptr->chname); |
| 802 |
mbuf = lmodebuf + mlen; |
| 803 |
|
| 804 |
DLINK_FOREACH_SAFE(ptr, next_ptr, list->head) |
| 805 |
{ |
| 806 |
banptr = ptr->data; |
| 807 |
|
| 808 |
plen = banptr->len + 4; /* another +b and "!@ " */ |
| 809 |
if (count >= MAXMODEPARAMS || |
| 810 |
(cur_len + 1 /* space between */ + (plen - 1)) > IRCD_BUFSIZE - 2) |
| 811 |
{ |
| 812 |
/* NUL-terminate and remove trailing space */ |
| 813 |
*mbuf = *(pbuf - 1) = '\0'; |
| 814 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", |
| 815 |
lmodebuf, lparabuf); |
| 816 |
sendto_server(source_p, NULL, chptr, cap, CAP_TS6, |
| 817 |
"%s %s", lmodebuf, lparabuf); |
| 818 |
|
| 819 |
cur_len = mlen; |
| 820 |
mbuf = lmodebuf + mlen; |
| 821 |
pbuf = lparabuf; |
| 822 |
count = 0; |
| 823 |
} |
| 824 |
|
| 825 |
*mbuf++ = c; |
| 826 |
cur_len += plen; |
| 827 |
pbuf += ircsprintf(pbuf, "%s!%s@%s ", banptr->name, banptr->username, |
| 828 |
banptr->host); |
| 829 |
++count; |
| 830 |
|
| 831 |
remove_ban(banptr, list); |
| 832 |
} |
| 833 |
|
| 834 |
*mbuf = *(pbuf - 1) = '\0'; |
| 835 |
sendto_channel_local(ALL_MEMBERS, NO, chptr, "%s %s", lmodebuf, lparabuf); |
| 836 |
sendto_server(source_p, NULL, chptr, cap, CAP_TS6, |
| 837 |
"%s %s", lmodebuf, lparabuf); |
| 838 |
} |
