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ircu2/ircd/m_sethost.c

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/*
* IRC - Internet Relay Chat, ircd/m_sethost.c
* Copyright (C) 1990 Jarkko Oikarinen and
* University of Oulu, Computing Center
*
* 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.
*
* $Id: m_sethost.c 1271 2004-12-11 05:14:07Z klmitch $
*/
/*
* m_functions execute protocol messages on this server:
*
* cptr is always NON-NULL, pointing to a *LOCAL* client
* structure (with an open socket connected!). This
* identifies the physical socket where the message
* originated (or which caused the m_function to be
* executed--some m_functions may call others...).
*
* sptr is the source of the message, defined by the
* prefix part of the message if present. If not
* or prefix not found, then sptr==cptr.
*
* (!IsServer(cptr)) => (cptr == sptr), because
* prefixes are taken *only* from servers...
*
* (IsServer(cptr))
* (sptr == cptr) => the message didn't
* have the prefix.
*
* (sptr != cptr && IsServer(sptr) means
* the prefix specified servername. (?)
*
* (sptr != cptr && !IsServer(sptr) means
* that message originated from a remote
* user (not local).
*
* combining
*
* (!IsServer(sptr)) means that, sptr can safely
* taken as defining the target structure of the
* message in this server.
*
* *Always* true (if 'parse' and others are working correct):
*
* 1) sptr->from == cptr (note: cptr->from == cptr)
*
* 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
* *cannot* be a local connection, unless it's
* actually cptr!). [MyConnect(x) should probably
* be defined as (x == x->from) --msa ]
*
* parc number of variable parameter strings (if zero,
* parv is allowed to be NULL)
*
* parv a NULL terminated list of parameter pointers,
*
* parv[0], sender (prefix string), if not present
* this points to an empty string.
* parv[1]...parv[parc-1]
* pointers to additional parameters
* parv[parc] == NULL, *always*
*
* note: it is guaranteed that parv[0]..parv[parc-1] are all
* non-NULL pointers.
*/
#include "config.h"
#include "client.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_features.h"
#include "ircd_log.h"
#include "ircd_reply.h"
#include "ircd_snprintf.h"
#include "ircd_string.h"
#include "numeric.h"
#include "numnicks.h"
#include "s_conf.h"
#include "s_user.h"
#include "send.h"
/* #include <assert.h> -- Now using assert in ircd_log.h */
/*
* m_sethost - generic message handler
*/
int m_sethost(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
struct Flags setflags;
struct SHostConf *sconf = NULL;
int res = 0;
if (!feature_bool(FEAT_SETHOST)) {
send_reply(cptr, ERR_DISABLED, "SETHOST");
return 0;
}
if (parc < 2)
return need_more_params(sptr, "SETHOST");
/* Back up the flags first */
setflags = cli_flags(sptr);
if (ircd_strcmp("undo", parv[1]) == 0) {
ClearSetHost(sptr);
cli_user(sptr)->sethost[0] = '\0';
} else if (parc < 3) {
return need_more_params(sptr, "SETHOST");
} else {
if (!valid_hostname(parv[1])) {
send_reply(sptr, ERR_BADHOSTMASK, parv[1]);
} else {
sconf = find_shost_conf(sptr, parv[1], parv[2], &res);
if ((res == 0) && (sconf != 0)) {
if (strchr(parv[1], '@') != NULL)
ircd_strncpy(cli_user(sptr)->sethost, parv[1], HOSTLEN + 1);
else
ircd_snprintf(0, cli_user(sptr)->sethost, USERLEN + HOSTLEN + 1, "%s@%s",
cli_user(sptr)->username, parv[1]);
if (FlagHas(&setflags, FLAG_SETHOST))
FlagClr(&setflags, FLAG_SETHOST);
SetSetHost(sptr);
SetHiddenHost(sptr);
} else {
if (res == 1)
send_reply(sptr, ERR_PASSWDMISMATCH);
else
send_reply(sptr, ERR_HOSTUNAVAIL, parv[1]);
}
}
}
hide_hostmask(sptr);
send_umode_out(cptr, sptr, &setflags, 0);
return 0;
}
/*
* mo_sethost - oper message handler
*/
int mo_sethost(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
struct Flags setflags;
struct SHostConf *sconf = NULL;
char hostmask[USERLEN + HOSTLEN + 2];
int res = 0;
if (!feature_bool(FEAT_SETHOST)) {
send_reply(cptr, ERR_DISABLED, "SETHOST");
return 0;
}
if (parc < 2)
return need_more_params(sptr, "SETHOST");
/* Back up the flags first */
setflags = cli_flags(sptr);
if (ircd_strcmp("undo", parv[1]) == 0) {
ClearSetHost(sptr);
cli_user(sptr)->sethost[0] = '\0';
} else if (parc < 3) {
return need_more_params(sptr, "SETHOST");
} else {
ircd_snprintf(0, hostmask, USERLEN + HOSTLEN + 1, "%s@%s", parv[1], parv[2]);
if (!valid_username(parv[1]) || !valid_hostname(parv[2])) {
send_reply(sptr, ERR_BADHOSTMASK, hostmask);
} else if (HasPriv(sptr, PRIV_FREEFORM)) {
ircd_strncpy(cli_user(sptr)->sethost, hostmask, USERLEN + HOSTLEN + 1);
if (FlagHas(&setflags, FLAG_SETHOST))
FlagClr(&setflags, FLAG_SETHOST);
SetSetHost(sptr);
SetHiddenHost(sptr);
} else {
sconf = find_shost_conf(sptr, hostmask, NULL, &res);
if ((res == 0) && (sconf != 0)) {
ircd_strncpy(cli_user(sptr)->sethost, hostmask, USERLEN + HOSTLEN + 1);
if (FlagHas(&setflags, FLAG_SETHOST))
FlagClr(&setflags, FLAG_SETHOST);
SetSetHost(sptr);
SetHiddenHost(sptr);
} else {
send_reply(sptr, ERR_HOSTUNAVAIL, hostmask);
}
}
}
hide_hostmask(sptr);
send_umode_out(cptr, sptr, &setflags, 0);
return 0;
}
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