| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
| 3 |
* |
| 4 |
* Copyright (c) 1997-2017 ircd-hybrid development team |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
| 19 |
* USA |
| 20 |
*/ |
| 21 |
|
| 22 |
/*! \file m_sjoin.c |
| 23 |
* \brief Includes required functions for processing the SJOIN command. |
| 24 |
* \version $Id$ |
| 25 |
*/ |
| 26 |
|
| 27 |
#include "stdinc.h" |
| 28 |
#include "list.h" |
| 29 |
#include "channel.h" |
| 30 |
#include "channel_mode.h" |
| 31 |
#include "client.h" |
| 32 |
#include "hash.h" |
| 33 |
#include "irc_string.h" |
| 34 |
#include "ircd.h" |
| 35 |
#include "numeric.h" |
| 36 |
#include "send.h" |
| 37 |
#include "parse.h" |
| 38 |
#include "modules.h" |
| 39 |
#include "server.h" |
| 40 |
#include "conf.h" |
| 41 |
#include "misc.h" |
| 42 |
|
| 43 |
|
| 44 |
static char modebuf[MODEBUFLEN]; |
| 45 |
static char parabuf[MODEBUFLEN]; |
| 46 |
static char sendbuf[MODEBUFLEN]; |
| 47 |
static const char *para[MAXMODEPARAMS]; |
| 48 |
static char *mbuf; |
| 49 |
static int pargs; |
| 50 |
|
| 51 |
static void set_final_mode(struct Mode *, struct Mode *); |
| 52 |
static void remove_our_modes(struct Channel *, struct Client *); |
| 53 |
static void remove_a_mode(struct Channel *, struct Client *, int, char); |
| 54 |
static void remove_ban_list(struct Channel *, struct Client *, dlink_list *, char); |
| 55 |
|
| 56 |
|
| 57 |
/* ms_sjoin() |
| 58 |
* |
| 59 |
* parv[0] - command |
| 60 |
* parv[1] - TS |
| 61 |
* parv[2] - channel |
| 62 |
* parv[3] - modes + n arguments (key and/or limit) |
| 63 |
* parv[4+n] - flags+nick list (all in one parameter) |
| 64 |
* |
| 65 |
* process a SJOIN, taking the TS's into account to either ignore the |
| 66 |
* incoming modes or undo the existing ones or merge them, and JOIN |
| 67 |
* all the specified users while sending JOIN/MODEs to local clients |
| 68 |
*/ |
| 69 |
static int |
| 70 |
ms_sjoin(struct Client *source_p, int parc, char *parv[]) |
| 71 |
{ |
| 72 |
struct Channel *chptr = NULL; |
| 73 |
struct Client *target_p = NULL; |
| 74 |
uintmax_t newts; |
| 75 |
uintmax_t oldts; |
| 76 |
uintmax_t tstosend; |
| 77 |
struct Mode mode, *oldmode; |
| 78 |
int args = 0; |
| 79 |
char keep_our_modes = 1; |
| 80 |
char keep_new_modes = 1; |
| 81 |
char have_many_uids = 0; |
| 82 |
int lcount; |
| 83 |
char uid_prefix[CMEMBER_STATUS_FLAGS_LEN + 1]; |
| 84 |
char *up = NULL; |
| 85 |
int len_uid = 0; |
| 86 |
int isnew = 0; |
| 87 |
int buflen = 0; |
| 88 |
int slen; |
| 89 |
unsigned int fl; |
| 90 |
char *s; |
| 91 |
char *sptr; |
| 92 |
char uid_buf[IRCD_BUFSIZE]; /* buffer for modes/prefixes */ |
| 93 |
char *uid_ptr; |
| 94 |
char *p; /* pointer used making sjbuf */ |
| 95 |
const char *servername = (ConfigServerHide.hide_servers || IsHidden(source_p)) ? |
| 96 |
me.name : source_p->name; |
| 97 |
|
| 98 |
if (!IsServer(source_p)) |
| 99 |
return 0; |
| 100 |
|
| 101 |
if (!channel_check_name(parv[2], 0)) |
| 102 |
{ |
| 103 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
| 104 |
"*** Too long or invalid channel name from %s(via %s): %s", |
| 105 |
source_p->name, source_p->from->name, parv[2]); |
| 106 |
return 0; |
| 107 |
} |
| 108 |
|
| 109 |
modebuf[0] = '\0'; |
| 110 |
mbuf = modebuf; |
| 111 |
pargs = 0; |
| 112 |
newts = strtoumax(parv[1], NULL, 10); |
| 113 |
|
| 114 |
mode.mode = 0; |
| 115 |
mode.limit = 0; |
| 116 |
mode.key[0] = '\0'; |
| 117 |
|
| 118 |
for (const char *modes = parv[3]; *modes; ++modes) |
| 119 |
{ |
| 120 |
switch (*modes) |
| 121 |
{ |
| 122 |
case 'k': |
| 123 |
strlcpy(mode.key, parv[4 + args], sizeof(mode.key)); |
| 124 |
++args; |
| 125 |
|
| 126 |
if (parc < 5 + args) |
| 127 |
return 0; |
| 128 |
break; |
| 129 |
|
| 130 |
case 'l': |
| 131 |
mode.limit = atoi(parv[4 + args]); |
| 132 |
++args; |
| 133 |
|
| 134 |
if (parc < 5 + args) |
| 135 |
return 0; |
| 136 |
break; |
| 137 |
|
| 138 |
default: |
| 139 |
mode.mode |= ModeTable[(unsigned char)*modes].d; |
| 140 |
break; |
| 141 |
} |
| 142 |
} |
| 143 |
|
| 144 |
if ((chptr = hash_find_channel(parv[2])) == NULL) |
| 145 |
{ |
| 146 |
isnew = 1; |
| 147 |
chptr = channel_make(parv[2]); |
| 148 |
} |
| 149 |
|
| 150 |
parabuf[0] = '\0'; |
| 151 |
oldts = chptr->creationtime; |
| 152 |
oldmode = &chptr->mode; |
| 153 |
|
| 154 |
if (ConfigGeneral.ignore_bogus_ts) |
| 155 |
{ |
| 156 |
if (newts < 800000000) |
| 157 |
{ |
| 158 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
| 159 |
"*** Bogus TS %ju on %s ignored from %s(via %s)", |
| 160 |
newts, chptr->name, |
| 161 |
source_p->name, source_p->from->name); |
| 162 |
|
| 163 |
newts = (oldts == 0) ? 0 : 800000000; |
| 164 |
} |
| 165 |
} |
| 166 |
else |
| 167 |
{ |
| 168 |
if (!newts && !isnew && oldts) |
| 169 |
{ |
| 170 |
sendto_channel_local(NULL, chptr, 0, 0, 0, |
| 171 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to 0", |
| 172 |
me.name, chptr->name, chptr->name, oldts); |
| 173 |
sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, |
| 174 |
"Server %s changing TS on %s from %ju to 0", |
| 175 |
source_p->name, chptr->name, oldts); |
| 176 |
} |
| 177 |
} |
| 178 |
|
| 179 |
if (isnew) |
| 180 |
chptr->creationtime = tstosend = newts; |
| 181 |
else if (newts == 0 || oldts == 0) |
| 182 |
chptr->creationtime = tstosend = 0; |
| 183 |
else if (newts == oldts) |
| 184 |
tstosend = oldts; |
| 185 |
else if (newts < oldts) |
| 186 |
{ |
| 187 |
keep_our_modes = 0; |
| 188 |
chptr->creationtime = tstosend = newts; |
| 189 |
} |
| 190 |
else |
| 191 |
{ |
| 192 |
keep_new_modes = 0; |
| 193 |
tstosend = oldts; |
| 194 |
} |
| 195 |
|
| 196 |
if (!keep_new_modes) |
| 197 |
mode = *oldmode; |
| 198 |
else if (keep_our_modes) |
| 199 |
{ |
| 200 |
mode.mode |= oldmode->mode; |
| 201 |
|
| 202 |
if (oldmode->limit > mode.limit) |
| 203 |
mode.limit = oldmode->limit; |
| 204 |
if (strcmp(mode.key, oldmode->key) < 0) |
| 205 |
strlcpy(mode.key, oldmode->key, sizeof(mode.key)); |
| 206 |
} |
| 207 |
|
| 208 |
set_final_mode(&mode, oldmode); |
| 209 |
chptr->mode = mode; |
| 210 |
|
| 211 |
/* Lost the TS, other side wins, so remove modes on this side */ |
| 212 |
if (!keep_our_modes) |
| 213 |
{ |
| 214 |
/* Update channel name to be the correct case */ |
| 215 |
if (!isnew) |
| 216 |
strlcpy(chptr->name, parv[2], sizeof(chptr->name)); |
| 217 |
|
| 218 |
remove_our_modes(chptr, source_p); |
| 219 |
|
| 220 |
if (dlink_list_length(&chptr->banlist)) |
| 221 |
remove_ban_list(chptr, source_p, &chptr->banlist, 'b'); |
| 222 |
|
| 223 |
if (dlink_list_length(&chptr->exceptlist)) |
| 224 |
remove_ban_list(chptr, source_p, &chptr->exceptlist, 'e'); |
| 225 |
|
| 226 |
if (dlink_list_length(&chptr->invexlist)) |
| 227 |
remove_ban_list(chptr, source_p, &chptr->invexlist, 'I'); |
| 228 |
|
| 229 |
clear_ban_cache_list(&chptr->locmembers); |
| 230 |
clear_invite_list(&chptr->invites); |
| 231 |
|
| 232 |
if (chptr->topic[0]) |
| 233 |
{ |
| 234 |
channel_set_topic(chptr, "", "", 0, 0); |
| 235 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s TOPIC %s :", |
| 236 |
(IsHidden(source_p) || |
| 237 |
ConfigServerHide.hide_servers) ? |
| 238 |
me.name : source_p->name, chptr->name); |
| 239 |
} |
| 240 |
|
| 241 |
sendto_channel_local(NULL, chptr, 0, 0, 0, |
| 242 |
":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to %ju", |
| 243 |
me.name, chptr->name, chptr->name, |
| 244 |
oldts, newts); |
| 245 |
} |
| 246 |
|
| 247 |
if (*modebuf != '\0') |
| 248 |
{ |
| 249 |
/* This _SHOULD_ be to ALL_MEMBERS |
| 250 |
* It contains only +imnpstlk, etc */ |
| 251 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s %s", |
| 252 |
servername, chptr->name, modebuf, parabuf); |
| 253 |
} |
| 254 |
|
| 255 |
if (*parv[3] != '0' && keep_new_modes) |
| 256 |
channel_modes(chptr, source_p, modebuf, parabuf); |
| 257 |
else |
| 258 |
{ |
| 259 |
modebuf[0] = '0'; |
| 260 |
modebuf[1] = '\0'; |
| 261 |
} |
| 262 |
|
| 263 |
buflen = snprintf(uid_buf, sizeof(uid_buf), ":%s SJOIN %ju %s %s %s:", |
| 264 |
source_p->id, tstosend, |
| 265 |
chptr->name, modebuf, parabuf); |
| 266 |
uid_ptr = uid_buf + buflen; |
| 267 |
|
| 268 |
/* |
| 269 |
* Check we can fit a nick on the end, as well as \r\n and a prefix " |
| 270 |
* @%+", and a space. |
| 271 |
*/ |
| 272 |
if (buflen >= (IRCD_BUFSIZE - IDLEN - 2 - CMEMBER_STATUS_FLAGS_LEN - 1)) |
| 273 |
{ |
| 274 |
sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, |
| 275 |
"Long SJOIN from server: %s(via %s) (ignored)", |
| 276 |
source_p->name, source_p->from->name); |
| 277 |
return 0; |
| 278 |
} |
| 279 |
|
| 280 |
mbuf = modebuf; |
| 281 |
sendbuf[0] = '\0'; |
| 282 |
pargs = 0; |
| 283 |
|
| 284 |
*mbuf++ = '+'; |
| 285 |
|
| 286 |
s = parv[args + 4]; |
| 287 |
while (*s == ' ') |
| 288 |
++s; |
| 289 |
|
| 290 |
if ((p = strchr(s, ' '))) |
| 291 |
{ |
| 292 |
*p++ = '\0'; |
| 293 |
|
| 294 |
while (*p == ' ') |
| 295 |
++p; |
| 296 |
have_many_uids = *p; |
| 297 |
} |
| 298 |
|
| 299 |
while (*s) |
| 300 |
{ |
| 301 |
int valid_mode = 1; |
| 302 |
fl = 0; |
| 303 |
|
| 304 |
do |
| 305 |
{ |
| 306 |
switch (*s) |
| 307 |
{ |
| 308 |
case '@': |
| 309 |
fl |= CHFL_CHANOP; |
| 310 |
++s; |
| 311 |
break; |
| 312 |
case '%': |
| 313 |
fl |= CHFL_HALFOP; |
| 314 |
++s; |
| 315 |
break; |
| 316 |
case '+': |
| 317 |
fl |= CHFL_VOICE; |
| 318 |
++s; |
| 319 |
break; |
| 320 |
default: |
| 321 |
valid_mode = 0; |
| 322 |
break; |
| 323 |
} |
| 324 |
} while (valid_mode); |
| 325 |
|
| 326 |
/* |
| 327 |
* If the client doesn't exist, or if it's fake direction/server, skip. |
| 328 |
* we cannot send ERR_NOSUCHNICK here because if it's a UID, we cannot |
| 329 |
* lookup the nick, and it's better to never send the numeric than only |
| 330 |
* sometimes. |
| 331 |
*/ |
| 332 |
if ((target_p = find_person(source_p, s)) == NULL || target_p->from != source_p->from) |
| 333 |
goto nextnick; |
| 334 |
|
| 335 |
len_uid = strlen(target_p->id); |
| 336 |
up = uid_prefix; |
| 337 |
|
| 338 |
if (keep_new_modes) |
| 339 |
{ |
| 340 |
if (fl & CHFL_CHANOP) |
| 341 |
{ |
| 342 |
*up++ = '@'; |
| 343 |
len_uid++; |
| 344 |
} |
| 345 |
|
| 346 |
if (fl & CHFL_HALFOP) |
| 347 |
{ |
| 348 |
*up++ = '%'; |
| 349 |
len_uid++; |
| 350 |
} |
| 351 |
|
| 352 |
if (fl & CHFL_VOICE) |
| 353 |
{ |
| 354 |
*up++ = '+'; |
| 355 |
len_uid++; |
| 356 |
} |
| 357 |
} |
| 358 |
else |
| 359 |
fl = 0; |
| 360 |
|
| 361 |
*up = '\0'; |
| 362 |
|
| 363 |
if ((uid_ptr - uid_buf + len_uid) > (IRCD_BUFSIZE - 2)) |
| 364 |
{ |
| 365 |
sendto_server(source_p, 0, 0, "%s", uid_buf); |
| 366 |
|
| 367 |
buflen = snprintf(uid_buf, sizeof(uid_buf), ":%s SJOIN %ju %s %s %s:", |
| 368 |
source_p->id, tstosend, |
| 369 |
chptr->name, modebuf, parabuf); |
| 370 |
uid_ptr = uid_buf + buflen; |
| 371 |
} |
| 372 |
|
| 373 |
uid_ptr += sprintf(uid_ptr, "%s%s ", uid_prefix, target_p->id); |
| 374 |
|
| 375 |
if (!IsMember(target_p, chptr)) |
| 376 |
{ |
| 377 |
add_user_to_channel(chptr, target_p, fl, !have_many_uids); |
| 378 |
|
| 379 |
sendto_channel_local(NULL, chptr, 0, CAP_EXTENDED_JOIN, 0, ":%s!%s@%s JOIN %s %s :%s", |
| 380 |
target_p->name, target_p->username, |
| 381 |
target_p->host, chptr->name, target_p->account, target_p->info); |
| 382 |
sendto_channel_local(NULL, chptr, 0, 0, CAP_EXTENDED_JOIN, ":%s!%s@%s JOIN :%s", |
| 383 |
target_p->name, target_p->username, |
| 384 |
target_p->host, chptr->name); |
| 385 |
|
| 386 |
if (target_p->away[0]) |
| 387 |
sendto_channel_local(target_p, chptr, 0, CAP_AWAY_NOTIFY, 0, |
| 388 |
":%s!%s@%s AWAY :%s", |
| 389 |
target_p->name, target_p->username, |
| 390 |
target_p->host, target_p->away); |
| 391 |
} |
| 392 |
|
| 393 |
if (fl & CHFL_CHANOP) |
| 394 |
{ |
| 395 |
*mbuf++ = 'o'; |
| 396 |
para[pargs++] = target_p->name; |
| 397 |
|
| 398 |
if (pargs >= MAXMODEPARAMS) |
| 399 |
{ |
| 400 |
/* |
| 401 |
* Ok, the code is now going to "walk" through |
| 402 |
* sendbuf, filling in para strings. So, I will use sptr |
| 403 |
* to point into the sendbuf. |
| 404 |
* Notice, that ircsprintf() returns the number of chars |
| 405 |
* successfully inserted into string. |
| 406 |
* - Dianora |
| 407 |
*/ |
| 408 |
|
| 409 |
sptr = sendbuf; |
| 410 |
*mbuf = '\0'; |
| 411 |
|
| 412 |
for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount) |
| 413 |
{ |
| 414 |
slen = sprintf(sptr, " %s", para[lcount]); /* see? */ |
| 415 |
sptr += slen; /* ready for next */ |
| 416 |
} |
| 417 |
|
| 418 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 419 |
servername, chptr->name, modebuf, sendbuf); |
| 420 |
mbuf = modebuf; |
| 421 |
*mbuf++ = '+'; |
| 422 |
|
| 423 |
sendbuf[0] = '\0'; |
| 424 |
pargs = 0; |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
if (fl & CHFL_HALFOP) |
| 429 |
{ |
| 430 |
*mbuf++ = 'h'; |
| 431 |
para[pargs++] = target_p->name; |
| 432 |
|
| 433 |
if (pargs >= MAXMODEPARAMS) |
| 434 |
{ |
| 435 |
sptr = sendbuf; |
| 436 |
*mbuf = '\0'; |
| 437 |
|
| 438 |
for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount) |
| 439 |
{ |
| 440 |
slen = sprintf(sptr, " %s", para[lcount]); |
| 441 |
sptr += slen; |
| 442 |
} |
| 443 |
|
| 444 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 445 |
servername, chptr->name, modebuf, sendbuf); |
| 446 |
|
| 447 |
mbuf = modebuf; |
| 448 |
*mbuf++ = '+'; |
| 449 |
|
| 450 |
sendbuf[0] = '\0'; |
| 451 |
pargs = 0; |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
if (fl & CHFL_VOICE) |
| 456 |
{ |
| 457 |
*mbuf++ = 'v'; |
| 458 |
para[pargs++] = target_p->name; |
| 459 |
|
| 460 |
if (pargs >= MAXMODEPARAMS) |
| 461 |
{ |
| 462 |
sptr = sendbuf; |
| 463 |
*mbuf = '\0'; |
| 464 |
|
| 465 |
for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount) |
| 466 |
{ |
| 467 |
slen = sprintf(sptr, " %s", para[lcount]); |
| 468 |
sptr += slen; |
| 469 |
} |
| 470 |
|
| 471 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 472 |
servername, chptr->name, modebuf, sendbuf); |
| 473 |
|
| 474 |
mbuf = modebuf; |
| 475 |
*mbuf++ = '+'; |
| 476 |
|
| 477 |
sendbuf[0] = '\0'; |
| 478 |
pargs = 0; |
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
nextnick: |
| 483 |
if ((s = p) == NULL) |
| 484 |
break; |
| 485 |
|
| 486 |
while (*s == ' ') |
| 487 |
++s; |
| 488 |
|
| 489 |
if ((p = strchr(s, ' '))) |
| 490 |
{ |
| 491 |
*p++ = '\0'; |
| 492 |
|
| 493 |
while (*p == ' ') |
| 494 |
++p; |
| 495 |
} |
| 496 |
} |
| 497 |
|
| 498 |
*mbuf = '\0'; |
| 499 |
*(uid_ptr - 1) = '\0'; |
| 500 |
|
| 501 |
/* |
| 502 |
* checking for lcount < MAXMODEPARAMS at this time is wrong |
| 503 |
* since the code has already verified above that pargs < MAXMODEPARAMS |
| 504 |
* checking for para[lcount] != '\0' is also wrong, since |
| 505 |
* there is no place where para[lcount] is set! |
| 506 |
* - Dianora |
| 507 |
*/ |
| 508 |
|
| 509 |
if (pargs) |
| 510 |
{ |
| 511 |
sptr = sendbuf; |
| 512 |
|
| 513 |
for (lcount = 0; lcount < pargs; ++lcount) |
| 514 |
{ |
| 515 |
slen = sprintf(sptr, " %s", para[lcount]); |
| 516 |
sptr += slen; |
| 517 |
} |
| 518 |
|
| 519 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 520 |
servername, chptr->name, modebuf, sendbuf); |
| 521 |
} |
| 522 |
|
| 523 |
/* |
| 524 |
* If this happens, it's the result of a malformed SJOIN |
| 525 |
* a remnant from the old persistent channel code. *sigh* |
| 526 |
* Or it could be the result of a client just leaving |
| 527 |
* and leaving us with a channel formed just as the client parts. |
| 528 |
* - Dianora |
| 529 |
*/ |
| 530 |
if (!dlink_list_length(&chptr->members) && isnew) |
| 531 |
{ |
| 532 |
channel_free(chptr); |
| 533 |
return 0; |
| 534 |
} |
| 535 |
|
| 536 |
if (*parv[4 + args] == '\0') |
| 537 |
return 0; |
| 538 |
|
| 539 |
sendto_server(source_p, 0, 0, "%s", uid_buf); |
| 540 |
return 0; |
| 541 |
} |
| 542 |
|
| 543 |
/* set_final_mode |
| 544 |
* |
| 545 |
* inputs - channel mode |
| 546 |
* - old channel mode |
| 547 |
* output - NONE |
| 548 |
* side effects - walk through all the channel modes turning off modes |
| 549 |
* that were on in oldmode but aren't on in mode. |
| 550 |
* Then walk through turning on modes that are on in mode |
| 551 |
* but were not set in oldmode. |
| 552 |
*/ |
| 553 |
static void |
| 554 |
set_final_mode(struct Mode *mode, struct Mode *oldmode) |
| 555 |
{ |
| 556 |
char *pbuf = parabuf; |
| 557 |
int len = 0; |
| 558 |
|
| 559 |
*mbuf++ = '-'; |
| 560 |
|
| 561 |
for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab) |
| 562 |
if ((tab->mode & oldmode->mode) && !(tab->mode & mode->mode)) |
| 563 |
*mbuf++ = tab->letter; |
| 564 |
|
| 565 |
if (oldmode->limit && mode->limit == 0) |
| 566 |
*mbuf++ = 'l'; |
| 567 |
|
| 568 |
if (oldmode->key[0] && mode->key[0] == '\0') |
| 569 |
{ |
| 570 |
*mbuf++ = 'k'; |
| 571 |
len = sprintf(pbuf, "%s ", oldmode->key); |
| 572 |
pbuf += len; |
| 573 |
pargs++; |
| 574 |
} |
| 575 |
|
| 576 |
if (*(mbuf - 1) == '-') |
| 577 |
*(mbuf - 1) = '+'; |
| 578 |
else |
| 579 |
*mbuf++ = '+'; |
| 580 |
|
| 581 |
for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab) |
| 582 |
if ((tab->mode & mode->mode) && !(tab->mode & oldmode->mode)) |
| 583 |
*mbuf++ = tab->letter; |
| 584 |
|
| 585 |
if (mode->limit && oldmode->limit != mode->limit) |
| 586 |
{ |
| 587 |
*mbuf++ = 'l'; |
| 588 |
len = sprintf(pbuf, "%u ", mode->limit); |
| 589 |
pbuf += len; |
| 590 |
pargs++; |
| 591 |
} |
| 592 |
|
| 593 |
if (mode->key[0] && strcmp(oldmode->key, mode->key)) |
| 594 |
{ |
| 595 |
*mbuf++ = 'k'; |
| 596 |
len = sprintf(pbuf, "%s ", mode->key); |
| 597 |
pbuf += len; |
| 598 |
pargs++; |
| 599 |
} |
| 600 |
|
| 601 |
if (*(mbuf - 1) == '+') |
| 602 |
*(mbuf - 1) = '\0'; |
| 603 |
else |
| 604 |
*mbuf = '\0'; |
| 605 |
} |
| 606 |
|
| 607 |
/* remove_our_modes() |
| 608 |
* |
| 609 |
* inputs - pointer to channel to remove modes from |
| 610 |
* - client pointer |
| 611 |
* output - NONE |
| 612 |
* side effects - Go through the local members, remove all their |
| 613 |
* chanop modes etc., this side lost the TS. |
| 614 |
*/ |
| 615 |
static void |
| 616 |
remove_our_modes(struct Channel *chptr, struct Client *source_p) |
| 617 |
{ |
| 618 |
remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o'); |
| 619 |
remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h'); |
| 620 |
remove_a_mode(chptr, source_p, CHFL_VOICE, 'v'); |
| 621 |
} |
| 622 |
|
| 623 |
/* remove_a_mode() |
| 624 |
* |
| 625 |
* inputs - pointer to channel |
| 626 |
* - server or client removing the mode |
| 627 |
* - mask o/h/v mask to be removed |
| 628 |
* - flag o/h/v to be removed |
| 629 |
* output - NONE |
| 630 |
* side effects - remove ONE mode from all members of a channel |
| 631 |
*/ |
| 632 |
static void |
| 633 |
remove_a_mode(struct Channel *chptr, struct Client *source_p, |
| 634 |
int mask, char flag) |
| 635 |
{ |
| 636 |
dlink_node *node = NULL; |
| 637 |
char lmodebuf[MODEBUFLEN]; |
| 638 |
char *sp = sendbuf; |
| 639 |
const char *lpara[MAXMODEPARAMS]; |
| 640 |
unsigned int count = 0; |
| 641 |
int l = 0; |
| 642 |
|
| 643 |
mbuf = lmodebuf; |
| 644 |
*mbuf++ = '-'; |
| 645 |
*sp = '\0'; |
| 646 |
|
| 647 |
DLINK_FOREACH(node, chptr->members.head) |
| 648 |
{ |
| 649 |
struct Membership *member = node->data; |
| 650 |
|
| 651 |
if ((member->flags & mask) == 0) |
| 652 |
continue; |
| 653 |
|
| 654 |
member->flags &= ~mask; |
| 655 |
|
| 656 |
lpara[count++] = member->client_p->name; |
| 657 |
|
| 658 |
*mbuf++ = flag; |
| 659 |
|
| 660 |
if (count >= MAXMODEPARAMS) |
| 661 |
{ |
| 662 |
for (unsigned int i = 0; i < MAXMODEPARAMS; ++i) |
| 663 |
{ |
| 664 |
l = sprintf(sp, " %s", lpara[i]); |
| 665 |
sp += l; |
| 666 |
} |
| 667 |
|
| 668 |
*mbuf = '\0'; |
| 669 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 670 |
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? |
| 671 |
me.name : source_p->name, |
| 672 |
chptr->name, lmodebuf, sendbuf); |
| 673 |
mbuf = lmodebuf; |
| 674 |
*mbuf++ = '-'; |
| 675 |
count = 0; |
| 676 |
sp = sendbuf; |
| 677 |
*sp = '\0'; |
| 678 |
} |
| 679 |
} |
| 680 |
|
| 681 |
if (count) |
| 682 |
{ |
| 683 |
*mbuf = '\0'; |
| 684 |
|
| 685 |
for (unsigned int i = 0; i < count; ++i) |
| 686 |
{ |
| 687 |
l = sprintf(sp, " %s", lpara[i]); |
| 688 |
sp += l; |
| 689 |
} |
| 690 |
|
| 691 |
sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s", |
| 692 |
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? |
| 693 |
me.name : source_p->name, |
| 694 |
chptr->name, lmodebuf, sendbuf); |
| 695 |
} |
| 696 |
} |
| 697 |
|
| 698 |
/* remove_ban_list() |
| 699 |
* |
| 700 |
* inputs - channel, source, list to remove, char of mode |
| 701 |
* outputs - none |
| 702 |
* side effects - given ban list is removed, modes are sent to local clients |
| 703 |
*/ |
| 704 |
static void |
| 705 |
remove_ban_list(struct Channel *chptr, struct Client *source_p, |
| 706 |
dlink_list *list, char c) |
| 707 |
{ |
| 708 |
char lmodebuf[MODEBUFLEN]; |
| 709 |
char lparabuf[IRCD_BUFSIZE]; |
| 710 |
dlink_node *node = NULL, *node_next = NULL; |
| 711 |
char *pbuf = NULL; |
| 712 |
int count = 0; |
| 713 |
int cur_len, mlen, plen; |
| 714 |
|
| 715 |
pbuf = lparabuf; |
| 716 |
cur_len = mlen = snprintf(lmodebuf, sizeof(lmodebuf), ":%s MODE %s -", |
| 717 |
source_p->name, chptr->name); |
| 718 |
mbuf = lmodebuf + mlen; |
| 719 |
|
| 720 |
DLINK_FOREACH_SAFE(node, node_next, list->head) |
| 721 |
{ |
| 722 |
struct Ban *ban = node->data; |
| 723 |
|
| 724 |
plen = ban->len + 4; /* another +b and "!@ " */ |
| 725 |
|
| 726 |
if (count >= MAXMODEPARAMS || |
| 727 |
(cur_len + 1 /* space between */ + (plen - 1)) > IRCD_BUFSIZE - 2) |
| 728 |
{ |
| 729 |
/* NUL-terminate and remove trailing space */ |
| 730 |
*mbuf = *(pbuf - 1) = '\0'; |
| 731 |
sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", lmodebuf, lparabuf); |
| 732 |
cur_len = mlen; |
| 733 |
mbuf = lmodebuf + mlen; |
| 734 |
pbuf = lparabuf; |
| 735 |
count = 0; |
| 736 |
} |
| 737 |
|
| 738 |
*mbuf++ = c; |
| 739 |
cur_len += plen; |
| 740 |
pbuf += sprintf(pbuf, "%s!%s@%s ", ban->name, ban->user, ban->host); |
| 741 |
++count; |
| 742 |
|
| 743 |
remove_ban(ban, list); |
| 744 |
} |
| 745 |
|
| 746 |
*mbuf = *(pbuf - 1) = '\0'; |
| 747 |
sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", lmodebuf, lparabuf); |
| 748 |
} |
| 749 |
|
| 750 |
static struct Message sjoin_msgtab = |
| 751 |
{ |
| 752 |
.cmd = "SJOIN", |
| 753 |
.args_min = 5, |
| 754 |
.args_max = MAXPARA, |
| 755 |
.handlers[UNREGISTERED_HANDLER] = m_unregistered, |
| 756 |
.handlers[CLIENT_HANDLER] = m_ignore, |
| 757 |
.handlers[SERVER_HANDLER] = ms_sjoin, |
| 758 |
.handlers[ENCAP_HANDLER] = m_ignore, |
| 759 |
.handlers[OPER_HANDLER] = m_ignore |
| 760 |
}; |
| 761 |
|
| 762 |
static void |
| 763 |
module_init(void) |
| 764 |
{ |
| 765 |
mod_add_cmd(&sjoin_msgtab); |
| 766 |
} |
| 767 |
|
| 768 |
static void |
| 769 |
module_exit(void) |
| 770 |
{ |
| 771 |
mod_del_cmd(&sjoin_msgtab); |
| 772 |
} |
| 773 |
|
| 774 |
struct module module_entry = |
| 775 |
{ |
| 776 |
.version = "$Revision$", |
| 777 |
.modinit = module_init, |
| 778 |
.modexit = module_exit, |
| 779 |
.flags = MODULE_FLAG_CORE |
| 780 |
}; |
