249 lines
6.9 KiB
C
249 lines
6.9 KiB
C
/*
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* IRC - Internet Relay Chat, ircd/m_uping.c
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* Copyright (C) 1990 Jarkko Oikarinen and
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* University of Oulu, Computing Center
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*
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* See file AUTHORS in IRC package for additional names of
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* the programmers.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: m_uping.c 1271 2004-12-11 05:14:07Z klmitch $
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*/
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/*
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* m_functions execute protocol messages on this server:
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*
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* cptr is always NON-NULL, pointing to a *LOCAL* client
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* structure (with an open socket connected!). This
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* identifies the physical socket where the message
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* originated (or which caused the m_function to be
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* executed--some m_functions may call others...).
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*
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* sptr is the source of the message, defined by the
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* prefix part of the message if present. If not
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* or prefix not found, then sptr==cptr.
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*
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* (!IsServer(cptr)) => (cptr == sptr), because
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* prefixes are taken *only* from servers...
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*
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* (IsServer(cptr))
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* (sptr == cptr) => the message didn't
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* have the prefix.
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*
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* (sptr != cptr && IsServer(sptr) means
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* the prefix specified servername. (?)
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*
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* (sptr != cptr && !IsServer(sptr) means
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* that message originated from a remote
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* user (not local).
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*
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* combining
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*
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* (!IsServer(sptr)) means that, sptr can safely
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* taken as defining the target structure of the
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* message in this server.
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*
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* *Always* true (if 'parse' and others are working correct):
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*
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* 1) sptr->from == cptr (note: cptr->from == cptr)
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*
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* 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
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* *cannot* be a local connection, unless it's
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* actually cptr!). [MyConnect(x) should probably
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* be defined as (x == x->from) --msa ]
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*
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* parc number of variable parameter strings (if zero,
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* parv is allowed to be NULL)
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*
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* parv a NULL terminated list of parameter pointers,
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*
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* parv[0], sender (prefix string), if not present
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* this points to an empty string.
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* parv[1]...parv[parc-1]
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* pointers to additional parameters
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* parv[parc] == NULL, *always*
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*
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* note: it is guaranteed that parv[0]..parv[parc-1] are all
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* non-NULL pointers.
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*/
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#include "config.h"
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#include "client.h"
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#include "hash.h"
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#include "ircd.h"
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#include "ircd_features.h"
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#include "ircd_log.h"
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#include "ircd_reply.h"
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#include "ircd_snprintf.h"
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#include "ircd_string.h"
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#include "match.h"
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#include "msg.h"
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#include "numeric.h"
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#include "numnicks.h"
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#include "s_conf.h"
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#include "s_user.h"
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#include "send.h"
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#include "uping.h"
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/* #include <assert.h> -- Now using assert in ircd_log.h */
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#include <stdlib.h>
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#include <string.h>
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/*
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* ms_uping - server message handler
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*
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* m_uping -- by Run
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*
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* parv[0] = sender prefix
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* parv[1] = pinged server
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* parv[2] = port
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* parv[3] = hunted server
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* parv[4] = number of requested pings
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*/
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int ms_uping(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
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{
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struct ConfItem *aconf;
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int port;
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int count;
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assert(0 != cptr);
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assert(0 != sptr);
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if (!IsAnOper(sptr)) {
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send_reply(sptr, ERR_NOPRIVILEGES);
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return 0;
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}
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if (parc < 5) {
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send_reply(sptr, ERR_NEEDMOREPARAMS, "UPING");
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return 0;
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}
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if (hunt_server_cmd(sptr, CMD_UPING, cptr, 1, "%s %s %C %s", 3, parc, parv)
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!= HUNTED_ISME)
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return 0;
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/*
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* Determine port: First user supplied, then default : 7007
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*/
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if (EmptyString(parv[2]) || (port = atoi(parv[2])) <= 0)
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port = feature_int(FEAT_UPING_PORT);
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if (EmptyString(parv[4]) || (count = atoi(parv[4])) <= 0)
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{
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sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :UPING : Illegal number of "
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"packets: %s", sptr, parv[4]);
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return 0;
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}
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/*
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* Check if a CONNECT would be possible at all (adapted from m_connect)
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*/
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if ((aconf = conf_find_server(parv[1])))
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uping_server(sptr, aconf, port, count);
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else
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sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :UPING: Host %s not listed in "
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"ircd.conf", sptr, parv[1]);
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return 0;
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}
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/*
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* mo_uping - oper message handler
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*
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* m_uping -- by Run
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*
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* parv[0] = sender prefix
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* parv[1] = pinged server
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* parv[2] = port
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* parv[3] = hunted server
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* parv[4] = number of requested pings
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*/
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int mo_uping(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
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{
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struct ConfItem *aconf;
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int port;
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int count;
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char portstr[BUFSIZE];
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assert(0 != cptr);
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assert(0 != sptr);
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assert(cptr == sptr);
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assert(IsAnOper(sptr));
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ircd_snprintf(0, portstr, sizeof(portstr), "%d", feature_int(FEAT_UPING_PORT));
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if (parc < 2) {
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send_reply(sptr, ERR_NEEDMOREPARAMS, "UPING");
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return 0;
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}
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if (parc == 2) {
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parv[parc++] = portstr;
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parv[parc++] = cli_name(&me);
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parv[parc++] = "5";
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}
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else if (parc == 3) {
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if (IsDigit(*parv[2]))
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parv[parc++] = cli_name(&me);
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else {
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parv[parc++] = parv[2];
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parv[2] = portstr;
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}
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parv[parc++] = "5";
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}
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else if (parc == 4) {
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if (IsDigit(*parv[2])) {
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if (IsDigit(*parv[3])) {
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parv[parc++] = parv[3];
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parv[3] = cli_name(&me);
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}
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else
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parv[parc++] = "5";
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}
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else {
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parv[parc++] = parv[3];
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parv[3] = parv[2];
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parv[2] = portstr;
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}
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}
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if (hunt_server_cmd(sptr, CMD_UPING, sptr, 1, "%s %s %C %s", 3, parc, parv)
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!= HUNTED_ISME)
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return 0;
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/*
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* Determine port: First user supplied, then default : 7007
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*/
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if (EmptyString(parv[2]) || (port = atoi(parv[2])) <= 0)
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port = feature_int(FEAT_UPING_PORT);
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if (EmptyString(parv[4]) || (count = atoi(parv[4])) <= 0)
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{
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sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :UPING: Illegal number of "
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"packets: %s", sptr, parv[4]);
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return 0;
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}
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/*
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* Check if a CONNECT would be possible at all (adapted from m_connect)
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*/
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if ((aconf = conf_find_server(parv[1])))
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uping_server(sptr, aconf, port, count);
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else {
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sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :UPING: Host %s not listed in "
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"ircd.conf", sptr, parv[1]);
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}
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return 0;
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}
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