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Files
unrealircd/src/modules/m_protoctl.c
T
Bram Matthys 8607d950b7 - Made the IRCd calculate the cloaked host only once upon connect, and store (cache) it.
- When checking if a user is banned, we always check the cloakhost too. Previously we could
  not do this if the user had a /VHOST (=a minority of the cases, but still...). In short,
  this is some extra protection to combat ban evasion.
- Performance of is_banned() *slightly* improved (just 1-2 usec, but 7 usec if no bans).
- [Module coders] For extban routines, we now offer a routine extban_is_banned_helper(buf)
  which can be used instead of the ban_realhost/etc static chars stuff, see
  extban_modeq_is_banned for a (real-life) example of how this is used.
- [Services coders!] Added PROTOCTL CLK (requires NICKv2) which adds an extra field in the
  NICK command (when a user connects) right before the infofield (gecos).
  The added field contains the cloaked host, that is: the masked host if +x would have been
  set. This field is ALWAYS sent, regardless of whether the user is actually +x or not.
  Services can then store this field in memory, to know the host of the user if the user
  is set +x (+x-t). This is a (better) alternative to PROTOCTL VHP, with no race conditions,
  and avoids some other VHP problems.
  VHP will stay supported though... so it's not mandatory to switch over.
2006-04-16 23:27:56 +00:00

353 lines
7.2 KiB
C

/*
* IRC - Internet Relay Chat, src/modules/m_protoctl.c
* (C) 2004 The UnrealIRCd Team
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "msg.h"
#include "proto.h"
#include "channel.h"
#include <time.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#include <io.h>
#endif
#include <fcntl.h>
#include "h.h"
#ifdef STRIPBADWORDS
#include "badwords.h"
#endif
#ifdef _WIN32
#include "version.h"
#endif
DLLFUNC int m_protoctl(aClient *cptr, aClient *sptr, int parc, char *parv[]);
#define MSG_PROTOCTL "PROTOCTL"
#define TOK_PROTOCTL "_"
ModuleHeader MOD_HEADER(m_protoctl)
= {
"m_protoctl",
"$Id$",
"command /protoctl",
"3.2-b8-1",
NULL
};
DLLFUNC int MOD_INIT(m_protoctl)(ModuleInfo *modinfo)
{
add_CommandX(MSG_PROTOCTL, TOK_PROTOCTL, m_protoctl, MAXPARA, M_UNREGISTERED|M_SERVER|M_USER);
MARK_AS_OFFICIAL_MODULE(modinfo);
return MOD_SUCCESS;
}
DLLFUNC int MOD_LOAD(m_protoctl)(int module_load)
{
return MOD_SUCCESS;
}
DLLFUNC int MOD_UNLOAD(m_protoctl)(int module_unload)
{
if (del_Command(MSG_PROTOCTL, TOK_PROTOCTL, m_protoctl) < 0)
{
sendto_realops("Failed to delete commands when unloading %s",
MOD_HEADER(m_protoctl).name);
}
return MOD_SUCCESS;
}
/*
* m_protoctl
* parv[0] = Sender prefix
* parv[1+] = Options
*/
CMD_FUNC(m_protoctl)
{
int i;
#ifndef PROTOCTL_MADNESS
int remove = 0;
#endif
char proto[128], *s;
/* static char *dummyblank = ""; Yes, it is kind of ugly */
#ifdef PROTOCTL_MADNESS
if (GotProtoctl(sptr))
{
/*
* But we already GOT a protoctl msg!
*/
if (!IsServer(sptr))
sendto_one(cptr,
"ERROR :Already got a PROTOCTL from you.");
return 0;
}
#endif
cptr->flags |= FLAGS_PROTOCTL;
/* parv[parc - 1] */
for (i = 1; i < parc; i++)
{
strncpyzt(proto, parv[i], sizeof proto);
s = proto;
#ifndef PROTOCTL_MADNESS
if (*s == '-')
{
s++;
remove = 1;
}
else
remove = 0;
#endif
/* equal = (char *)index(proto, '=');
if (equal == NULL)
options = dummyblank;
else
{
options = &equal[1];
equal[0] = '\0';
}
*/
if (!strcmp(s, "NAMESX"))
{
Debug((DEBUG_ERROR, "Chose protocol %s for link %s", proto, cptr->name));
SetNAMESX(cptr);
}
else if (strcmp(s, "NOQUIT") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearNoQuit(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetNoQuit(cptr);
}
else if (strcmp(s, "TOKEN") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearToken(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetToken(cptr);
}
else if (strcmp(s, "HCN") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearHybNotice(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetHybNotice(cptr);
}
else if (strcmp(s, "SJOIN") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearSJOIN(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetSJOIN(cptr);
}
else if (strcmp(s, "SJOIN2") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearSJOIN2(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetSJOIN2(cptr);
}
else if (strcmp(s, "NICKv2") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearNICKv2(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR, "Chose protocol %s for link %s",
proto, cptr->name));
SetNICKv2(cptr);
}
else if (strcmp(s, "UMODE2") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearUMODE2(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetUMODE2(cptr);
}
else if (strcmp(s, "NS") == 0)
{
#ifdef PROTOCTL_MADNESS
if (remove)
{
ClearNS(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetNS(cptr);
}
else if (strcmp(s, "VL") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearVL(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetVL(cptr);
}
else if (strcmp(s, "VHP") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearVHP(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetVHP(cptr);
}
else if (strcmp(s, "CLK") == 0)
{
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetCLK(cptr);
}
else if (strcmp(s, "SJ3") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
ClearSJ3(cptr);
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
SetSJ3(cptr);
}
else if (strcmp(s, "SJB64") == 0)
{
#ifndef PROTOCTL_MADNESS
if (remove)
{
cptr->proto &= ~PROTO_SJB64;
continue;
}
#endif
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
cptr->proto |= PROTO_SJB64;
}
else if (strcmp(s, "ZIP") == 0)
{
if (remove)
{
cptr->proto &= ~PROTO_ZIP;
continue;
}
Debug((DEBUG_ERROR,
"Chose protocol %s for link %s",
proto, cptr->name));
cptr->proto |= PROTO_ZIP;
}
else if (strcmp(s, "TKLEXT") == 0)
{
Debug((DEBUG_ERROR, "Chose protocol %s for link %s", proto, cptr->name));
SetTKLEXT(cptr);
}
else if (strcmp(s, "NICKIP") == 0)
{
Debug((DEBUG_ERROR, "Chose protocol %s for link %s", proto, cptr->name));
cptr->proto |= PROTO_NICKIP;
}
else if (strncmp(s, "NICKCHARS=", 10) == 0)
{
/* Compare... */
if (strcmp(s+10, langsinuse))
{
sendto_realops("\002WARNING!!!!\002 Link %s does not have the same set::allowed-nickchars settings (or is "
"a different UnrealIRCd version), this MAY cause display issues. Our charset: '%s', theirs: '%s'",
get_client_name(cptr, FALSE), langsinuse, s+10);
/* return exit_client(cptr, cptr, &me, "Nick charset mismatch"); */
}
}
/*
* Add other protocol extensions here, with proto
* containing the base option, and options containing
* what it equals, if anything.
*
* DO NOT error or warn on unknown proto; we just don't
* support it.
*/
}
return 0;
}