/* * ircd-ratbox: A slightly useful ircd. * m_error.c: Handles error messages from the other end. * * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center * Copyright (C) 1996-2002 Hybrid Development Team * Copyright (C) 2002-2005 ircd-ratbox development team * * 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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ #include "stdinc.h" #include "client.h" #include "ircd.h" #include "numeric.h" #include "send.h" #include "msg.h" #include "modules.h" #include "logger.h" #include "s_conf.h" static const char error_desc[] = "Provides the ERROR command for clients and servers"; static void m_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **); static void ms_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **); struct Message error_msgtab = { "ERROR", 0, 0, 0, 0, {{m_error, 0}, mg_ignore, mg_ignore, {ms_error, 0}, mg_ignore, mg_ignore} }; mapi_clist_av1 error_clist[] = { &error_msgtab, NULL }; DECLARE_MODULE_AV2(error, NULL, NULL, error_clist, NULL, NULL, NULL, NULL, error_desc); /* Determine whether an ERROR message is safe to show (no IP address in it) */ static bool is_safe_error(const char *message) { char prefix2[100]; const char *p; if (!strncmp(message, "Closing Link: 127.0.0.1 (", 25)) return true; snprintf(prefix2, sizeof prefix2, "Closing Link: 127.0.0.1 %s (", me.name); if (!strncmp(message, prefix2, strlen(prefix2))) return true; if (!strncmp(message, "Restart by ", 11)) return true; if (!strncmp(message, "Terminated by ", 14)) return true; if (!strncasecmp(message, "Closing Link", 12)) return false; if (strchr(message, '[')) return false; p = strchr(message, '.'); if (p != NULL && p[1] != '\0') return false; if (strchr(message, ':')) return false; return true; } /* * Note: At least at protocol level ERROR has only one parameter, * although this is called internally from other functions * --msa * * parv[*] = parameters */ static void m_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { const char *para; int hideit = ConfigFileEntry.hide_error_messages; para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>"; if (IsAnyServer(client_p)) { ilog(L_SERVER, "Received ERROR message from %s: %s", log_client_name(source_p, SHOW_IP), para); } if(is_safe_error(para)) hideit = 0; if(IsAnyServer(client_p)) { if (hideit < 2) sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : (is_remote_connect(client_p) ? L_NETWIDE : L_ALL), "ERROR :from %s -- %s", client_p->name, para); if (hideit > 0) sendto_realops_snomask(SNO_GENERAL, (hideit == 1 ? L_OPER : L_ALL) | (is_remote_connect(client_p) ? L_NETWIDE : L_ALL), "ERROR :from %s -- ", client_p->name); } exit_client(client_p, source_p, source_p, "ERROR"); } static void ms_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { const char *para; int hideit = ConfigFileEntry.hide_error_messages; para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>"; ilog(L_SERVER, "Received ERROR message from %s: %s", log_client_name(source_p, SHOW_IP), para); if(is_safe_error(para)) hideit = 0; if(hideit == 2) return; if(client_p == source_p) { sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s -- %s", client_p->name, para); } else { sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s via %s -- %s", source_p->name, client_p->name, para); } }