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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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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 2 of the License, or |
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* (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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|
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/*! \file m_gline.c |
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* \brief Includes required functions for processing the GLINE command. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "list.h" |
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#include "s_gline.h" |
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#include "channel.h" |
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#include "client.h" |
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#include "irc_string.h" |
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#include "sprintf_irc.h" |
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#include "ircd.h" |
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#include "hostmask.h" |
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#include "numeric.h" |
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#include "s_bsd.h" |
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#include "conf.h" |
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#include "s_misc.h" |
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#include "send.h" |
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#include "s_serv.h" |
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#include "hash.h" |
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#include "parse.h" |
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#include "modules.h" |
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#include "log.h" |
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|
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#define GLINE_NOT_PLACED 0 |
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#define GLINE_ALREADY_VOTED -1 |
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#define GLINE_PLACED 1 |
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|
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|
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/*! \brief Adds a GLINE to the configuration subsystem. |
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* |
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* \param source_p Operator requesting gline |
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* \param user Username covered by the gline |
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* \param host Hostname covered by the gline |
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* \param reason Reason for the gline |
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*/ |
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static void |
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set_local_gline(const struct Client *source_p, const char *user, |
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const char *host, const char *reason) |
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{ |
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char buffer[IRCD_BUFSIZE]; |
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struct ConfItem *conf; |
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struct AccessItem *aconf; |
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|
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|
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conf = make_conf_item(GLINE_TYPE); |
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aconf = map_to_conf(conf); |
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|
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snprintf(buffer, sizeof(buffer), "%s (%s)", reason, smalldate(CurrentTime)); |
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DupString(aconf->reason, buffer); |
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DupString(aconf->user, user); |
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DupString(aconf->host, host); |
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|
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aconf->hold = CurrentTime + ConfigFileEntry.gline_time; |
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SetConfTemporary(aconf); |
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add_conf_by_address(CONF_GLINE, aconf); |
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|
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"%s added G-Line for [%s@%s] [%s]", |
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get_oper_name(source_p), |
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aconf->user, aconf->host, aconf->reason); |
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ilog(LOG_TYPE_GLINE, "%s added G-Line for [%s@%s] [%s]", |
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get_oper_name(source_p), aconf->user, aconf->host, aconf->reason); |
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|
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/* Now, activate gline against current online clients */ |
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rehashed_klines = 1; |
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} |
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|
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/*! \brief Removes a GLINE from the configuration subsystem. |
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* |
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* \param user Username covered by the gline |
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* \param host Hostname covered by the gline |
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*/ |
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static int |
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remove_gline_match(const char *user, const char *host) |
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{ |
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struct irc_ssaddr iphost, *piphost; |
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struct AccessItem *aconf; |
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int t; |
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|
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if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST) |
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{ |
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#ifdef IPV6 |
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if (t == HM_IPV6) |
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t = AF_INET6; |
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else |
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#endif |
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t = AF_INET; |
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piphost = &iphost; |
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} |
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else |
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{ |
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t = 0; |
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piphost = NULL; |
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} |
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|
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if ((aconf = find_conf_by_address(host, piphost, CONF_GLINE, t, user, NULL, 0))) |
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{ |
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if (IsConfTemporary(aconf)) |
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{ |
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delete_one_address_conf(host, aconf); |
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return 1; |
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} |
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} |
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|
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return 0; |
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} |
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|
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/*! \brief This function is called once a majority of opers have agreed on a |
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* GLINE/GUNGLINE, and it can be placed. The information about an |
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* operator being passed to us happens to be the operator who pushed us |
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* over the "majority" level needed. See check_majority() for more |
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* information. |
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* |
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* \param source_p Operator requesting gline |
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* \param user Username covered by the gline |
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* \param host Hostname covered by the gline |
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* \param reason Reason for the gline |
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* \param type Valid values are either GLINE_PENDING_ADD_TYPE, or |
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* GLINE_PENDING_DEL_TYPE |
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*/ |
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static void |
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add_new_majority(const struct Client *source_p, const char *user, |
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const char *host, const char *reason, const unsigned int type) |
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{ |
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struct gline_pending *pending = MyMalloc(sizeof(struct gline_pending)); |
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|
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strlcpy(pending->vote_1.oper_nick, source_p->name, sizeof(pending->vote_1.oper_nick)); |
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strlcpy(pending->vote_1.oper_user, source_p->username, sizeof(pending->vote_1.oper_user)); |
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strlcpy(pending->vote_1.oper_host, source_p->host, sizeof(pending->vote_1.oper_host)); |
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strlcpy(pending->vote_1.oper_server, source_p->servptr->name, sizeof(pending->vote_1.oper_server)); |
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|
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strlcpy(pending->user, user, sizeof(pending->user)); |
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strlcpy(pending->host, host, sizeof(pending->host)); |
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strlcpy(pending->vote_1.reason, reason, sizeof(pending->vote_1.reason)); |
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|
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pending->last_gline_time = CurrentTime; |
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pending->vote_1.time_request = CurrentTime; |
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|
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dlinkAdd(pending, &pending->node, &pending_glines[type]); |
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} |
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|
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/*! \brief See if there is a majority agreement on a GLINE on the given user. |
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* There must be at least 3 different opers agreeing on this |
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* GLINE/GUNGLINE |
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* |
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* \param source_p Operator requesting gline |
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* \param user Username covered by the gline |
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* \param host Hostname covered by the gline |
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* \param reason Reason for the gline |
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* \param type Valid values are either GLINE_PENDING_ADD_TYPE, or |
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* GLINE_PENDING_DEL_TYPE |
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* |
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* \return |
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* - GLINE_ALREADY_VOTED returned if oper/server has already voted |
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* - GLINE_PLACED returned if this triggers a gline |
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* - GLINE_NOT_PLACED returned if not triggered |
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*/ |
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static int |
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check_majority(const struct Client *source_p, const char *user, |
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const char *host, const char *reason, const int type) |
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{ |
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dlink_node *dn_ptr = NULL; |
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|
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cleanup_glines(NULL); |
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|
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/* if its already glined, why bother? :) -- fl_ */ |
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if ((type == GLINE_PENDING_ADD_TYPE) && find_is_glined(host, user)) |
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return GLINE_NOT_PLACED; |
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|
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DLINK_FOREACH(dn_ptr, pending_glines[type].head) |
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{ |
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struct gline_pending *gp_ptr = dn_ptr->data; |
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|
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if (irccmp(gp_ptr->user, user) || |
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irccmp(gp_ptr->host, host)) |
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continue; |
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|
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if ((!irccmp(gp_ptr->vote_1.oper_user, source_p->username) && |
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!irccmp(gp_ptr->vote_1.oper_host, source_p->host)) || |
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!irccmp(gp_ptr->vote_1.oper_server, source_p->servptr->name)) |
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return GLINE_ALREADY_VOTED; |
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|
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if (gp_ptr->vote_2.oper_user[0] != '\0') |
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{ |
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/* if two other opers on two different servers have voted yes */ |
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if ((!irccmp(gp_ptr->vote_2.oper_user, source_p->username) && |
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!irccmp(gp_ptr->vote_2.oper_host, source_p->host)) || |
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!irccmp(gp_ptr->vote_2.oper_server, source_p->servptr->name)) |
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return GLINE_ALREADY_VOTED; |
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|
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if (type == GLINE_PENDING_DEL_TYPE) |
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{ |
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if (remove_gline_match(user, host)) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"%s has removed the G-Line for: [%s@%s]", |
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get_oper_name(source_p), user, host); |
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ilog(LOG_TYPE_GLINE, "%s removed G-Line for [%s@%s]", |
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get_oper_name(source_p), user, host); |
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} |
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} |
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else |
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/* trigger the gline using the original reason --fl */ |
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set_local_gline(source_p, user, host, gp_ptr->vote_1.reason); |
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|
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cleanup_glines(gp_ptr); |
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return GLINE_PLACED; |
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} |
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|
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strlcpy(gp_ptr->vote_2.oper_nick, source_p->name, |
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sizeof(gp_ptr->vote_2.oper_nick)); |
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strlcpy(gp_ptr->vote_2.oper_user, source_p->username, |
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sizeof(gp_ptr->vote_2.oper_user)); |
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strlcpy(gp_ptr->vote_2.oper_host, source_p->host, |
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sizeof(gp_ptr->vote_2.oper_host)); |
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strlcpy(gp_ptr->vote_2.reason, reason, |
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sizeof(gp_ptr->vote_2.reason)); |
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strlcpy(gp_ptr->vote_2.oper_server, source_p->servptr->name, |
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sizeof(gp_ptr->vote_2.oper_server)); |
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gp_ptr->last_gline_time = CurrentTime; |
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gp_ptr->vote_2.time_request = CurrentTime; |
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return GLINE_NOT_PLACED; |
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} |
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|
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/* |
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* Didn't find this user@host gline in pending gline list |
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* so add it. |
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*/ |
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add_new_majority(source_p, user, host, reason, type); |
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return GLINE_NOT_PLACED; |
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} |
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|
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static void |
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do_sgline(struct Client *source_p, int parc, char *parv[], int prop) |
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{ |
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const char *reason = NULL; /* reason for "victims" demise */ |
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const char *user = NULL; |
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const char *host = NULL; /* user and host of GLINE "victim" */ |
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|
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if (!IsClient(source_p)) |
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return; |
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|
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if (parc != 4 || EmptyString(parv[3])) |
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return; |
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|
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assert(source_p->servptr != NULL); |
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|
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user = parv[1]; |
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host = parv[2]; |
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reason = parv[3]; |
| 274 |
|
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sendto_server(source_p->from, CAP_GLN|CAP_TS6, NOCAPS, |
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":%s GLINE %s %s :%s", |
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ID(source_p), user, host, reason); |
| 278 |
sendto_server(source_p->from, CAP_GLN, CAP_TS6, |
| 279 |
":%s GLINE %s %s :%s", |
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source_p->name, user, host, reason); |
| 281 |
|
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if (ConfigFileEntry.glines) |
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{ |
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if (!valid_wild_card(source_p, 1, 2, user, host)) |
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return; |
| 286 |
|
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if (IsClient(source_p)) |
| 288 |
{ |
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const char *p = NULL; |
| 290 |
|
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if ((p = strchr(host, '/'))) |
| 292 |
{ |
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int bitlen = strtol(++p, NULL, 10); |
| 294 |
int min_bitlen = strchr(host, ':') ? ConfigFileEntry.gline_min_cidr6 : |
| 295 |
ConfigFileEntry.gline_min_cidr; |
| 296 |
|
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if (bitlen < min_bitlen) |
| 298 |
{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, "%s!%s@%s on %s is requesting " |
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"a GLINE with a CIDR mask < %d for [%s@%s] [%s]", |
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source_p->name, source_p->username, source_p->host, |
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source_p->servptr->name, min_bitlen, user, host, reason); |
| 303 |
return; |
| 304 |
} |
| 305 |
} |
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} |
| 307 |
|
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/* If at least 3 opers agree this user should be G lined then do it */ |
| 309 |
if (check_majority(source_p, user, host, reason, GLINE_PENDING_ADD_TYPE) == |
| 310 |
GLINE_ALREADY_VOTED) |
| 311 |
{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, "oper or server has already voted"); |
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return; |
| 314 |
} |
| 315 |
|
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"%s requesting G-Line for [%s@%s] [%s]", |
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get_oper_name(source_p), |
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user, host, reason); |
| 320 |
ilog(LOG_TYPE_GLINE, "#gline for %s@%s [%s] requested by %s", |
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user, host, reason, get_oper_name(source_p)); |
| 322 |
} |
| 323 |
} |
| 324 |
|
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|
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/*! \brief GLINE command handler (called by operators) |
| 327 |
* |
| 328 |
* \param client_p Pointer to allocated Client struct with physical connection |
| 329 |
* to this server, i.e. with an open socket connected. |
| 330 |
* \param source_p Pointer to allocated Client struct from which the message |
| 331 |
* originally comes from. This can be a local or remote client. |
| 332 |
* \param parc Integer holding the number of supplied arguments. |
| 333 |
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
| 334 |
* pointers. |
| 335 |
* \note Valid arguments for this command are: |
| 336 |
* - parv[0] = sender prefix |
| 337 |
* - parv[1] = user\@host mask |
| 338 |
* - parv[2] = reason |
| 339 |
*/ |
| 340 |
static void |
| 341 |
mo_gline(struct Client *client_p, struct Client *source_p, |
| 342 |
int parc, char *parv[]) |
| 343 |
{ |
| 344 |
char *user = NULL; |
| 345 |
char *host = NULL; |
| 346 |
char *reason = NULL; |
| 347 |
char *p; |
| 348 |
|
| 349 |
if (!HasOFlag(source_p, OPER_FLAG_GLINE)) |
| 350 |
{ |
| 351 |
sendto_one(source_p, form_str(ERR_NOPRIVS), |
| 352 |
me.name, source_p->name, "gline"); |
| 353 |
return; |
| 354 |
} |
| 355 |
|
| 356 |
if (!ConfigFileEntry.glines) |
| 357 |
{ |
| 358 |
sendto_one(source_p, ":%s NOTICE %s :GLINE disabled", |
| 359 |
me.name, source_p->name); |
| 360 |
return; |
| 361 |
} |
| 362 |
|
| 363 |
if (parse_aline("GLINE", source_p, parc, parv, AWILD, |
| 364 |
&user, &host, NULL, NULL, &reason) < 0) |
| 365 |
return; |
| 366 |
|
| 367 |
if ((p = strchr(host, '/')) != NULL) |
| 368 |
{ |
| 369 |
int bitlen = strtol(++p, NULL, 10); |
| 370 |
int min_bitlen = strchr(host, ':') ? ConfigFileEntry.gline_min_cidr6 : |
| 371 |
ConfigFileEntry.gline_min_cidr; |
| 372 |
if (bitlen < min_bitlen) |
| 373 |
{ |
| 374 |
sendto_one(source_p, ":%s NOTICE %s :Cannot set G-Lines with CIDR length < %d", |
| 375 |
me.name, source_p->name, min_bitlen); |
| 376 |
return; |
| 377 |
} |
| 378 |
} |
| 379 |
|
| 380 |
/* If at least 3 opers agree this user should be G lined then do it */ |
| 381 |
if (check_majority(source_p, user, host, reason, GLINE_PENDING_ADD_TYPE) == |
| 382 |
GLINE_ALREADY_VOTED) |
| 383 |
{ |
| 384 |
sendto_one(source_p, |
| 385 |
":%s NOTICE %s :This server or oper has already voted", |
| 386 |
me.name, source_p->name); |
| 387 |
return; |
| 388 |
} |
| 389 |
|
| 390 |
/* |
| 391 |
* call these two functions first so the 'requesting' notice always comes |
| 392 |
* before the 'has triggered' notice. -bill |
| 393 |
*/ |
| 394 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
| 395 |
"%s requesting G-Line for [%s@%s] [%s]", |
| 396 |
get_oper_name(source_p), |
| 397 |
user, host, reason); |
| 398 |
ilog(LOG_TYPE_GLINE, "#gline for %s@%s [%s] requested by %s!%s@%s", |
| 399 |
user, host, reason, source_p->name, source_p->username, |
| 400 |
source_p->host); |
| 401 |
|
| 402 |
/* 4 param version for hyb-7 servers */ |
| 403 |
sendto_server(NULL, CAP_GLN|CAP_TS6, NOCAPS, |
| 404 |
":%s GLINE %s %s :%s", |
| 405 |
ID(source_p), user, host, reason); |
| 406 |
sendto_server(NULL, CAP_GLN, CAP_TS6, |
| 407 |
":%s GLINE %s %s :%s", |
| 408 |
source_p->name, user, host, reason); |
| 409 |
} |
| 410 |
|
| 411 |
/* ms_gline() |
| 412 |
* me_gline() |
| 413 |
* do_sgline() |
| 414 |
* |
| 415 |
* inputs - The usual for a m_ function |
| 416 |
* output - |
| 417 |
* side effects - |
| 418 |
* |
| 419 |
* Place a G line if 3 opers agree on the identical user@host |
| 420 |
* |
| 421 |
* Allow this server to pass along GLINE if received and |
| 422 |
* GLINES is not defined. |
| 423 |
* |
| 424 |
* ENCAP'd GLINES are propagated by encap code. |
| 425 |
*/ |
| 426 |
|
| 427 |
static void |
| 428 |
ms_gline(struct Client *client_p, struct Client *source_p, |
| 429 |
int parc, char *parv[]) |
| 430 |
{ |
| 431 |
do_sgline(source_p, parc, parv, 1); |
| 432 |
} |
| 433 |
|
| 434 |
static void |
| 435 |
me_gline(struct Client *client_p, struct Client *source_p, |
| 436 |
int parc, char *parv[]) |
| 437 |
{ |
| 438 |
do_sgline(source_p, parc, parv, 0); |
| 439 |
} |
| 440 |
|
| 441 |
static void |
| 442 |
do_sungline(struct Client *source_p, const char *user, |
| 443 |
const char *host, const char *reason, int prop) |
| 444 |
{ |
| 445 |
assert(source_p->servptr != NULL); |
| 446 |
|
| 447 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
| 448 |
"%s requesting UNG-Line for [%s@%s] [%s]", |
| 449 |
get_oper_name(source_p), user, host, reason); |
| 450 |
ilog(LOG_TYPE_GLINE, "#ungline for %s@%s [%s] requested by %s", |
| 451 |
user, host, reason, get_oper_name(source_p)); |
| 452 |
|
| 453 |
/* If at least 3 opers agree this user should be un G lined then do it */ |
| 454 |
if (check_majority(source_p, user, host, reason, GLINE_PENDING_DEL_TYPE) == |
| 455 |
GLINE_ALREADY_VOTED) |
| 456 |
sendto_realops_flags(UMODE_ALL, L_ALL, "oper or server has already voted"); |
| 457 |
|
| 458 |
if (prop) |
| 459 |
{ |
| 460 |
sendto_server(source_p->from, CAP_ENCAP|CAP_TS6, NOCAPS, |
| 461 |
":%s ENCAP * GUNGLINE %s %s :%s", |
| 462 |
ID(source_p), user, host, reason); |
| 463 |
sendto_server(source_p->from, CAP_ENCAP, CAP_TS6, |
| 464 |
":%s ENCAP * GUNGLINE %s %s :%s", |
| 465 |
source_p->name, user, host, reason); |
| 466 |
} |
| 467 |
} |
| 468 |
|
| 469 |
/*! \brief GUNGLINE command handler (called in response to an encapsulated |
| 470 |
* GUNGLINE command) |
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* |
| 472 |
* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
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* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
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* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = username |
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* - parv[2] = hostname |
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* - parv[3] = reason |
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*/ |
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static void |
| 486 |
me_gungline(struct Client *client_p, struct Client *source_p, |
| 487 |
int parc, char *parv[]) |
| 488 |
{ |
| 489 |
if (ConfigFileEntry.glines) |
| 490 |
do_sungline(source_p, parv[1], parv[2], parv[3], 0); |
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} |
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|
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/*! \brief GUNGLINE command handler (called by operators) |
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* |
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* \param client_p Pointer to allocated Client struct with physical connection |
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* to this server, i.e. with an open socket connected. |
| 497 |
* \param source_p Pointer to allocated Client struct from which the message |
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* originally comes from. This can be a local or remote client. |
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* \param parc Integer holding the number of supplied arguments. |
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* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
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* pointers. |
| 502 |
* \note Valid arguments for this command are: |
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* - parv[0] = sender prefix |
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* - parv[1] = user\@host mask |
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* - parv[2] = reason |
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*/ |
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static void |
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mo_gungline(struct Client *client_p, struct Client *source_p, |
| 509 |
int parc, char *parv[]) |
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{ |
| 511 |
char *user = NULL; |
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char *host = NULL; |
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char *reason = NULL; |
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|
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if (!HasOFlag(source_p, OPER_FLAG_GLINE)) |
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{ |
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sendto_one(source_p, form_str(ERR_NOPRIVS), |
| 518 |
me.name, source_p->name, "gline"); |
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return; |
| 520 |
} |
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|
| 522 |
if (!ConfigFileEntry.glines) |
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{ |
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sendto_one(source_p, ":%s NOTICE %s :GUNGLINE disabled", |
| 525 |
me.name, source_p->name); |
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return; |
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} |
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|
| 529 |
if (parse_aline("GUNGLINE", source_p, parc, parv, 0, &user, |
| 530 |
&host, NULL, NULL, &reason) < 0) |
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return; |
| 532 |
|
| 533 |
do_sungline(source_p, user, host, reason, 1); |
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} |
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|
| 536 |
/* |
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* gline enforces 3 parameters to force operator to give a reason |
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* a gline is not valid with "No reason" |
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* -db |
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*/ |
| 541 |
static struct Message gline_msgtab = { |
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"GLINE", 0, 0, 3, MAXPARA, MFLG_SLOW, 0, |
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{ m_unregistered, m_not_oper, ms_gline, me_gline, mo_gline, m_ignore } |
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}; |
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|
| 546 |
static struct Message ungline_msgtab = { |
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"GUNGLINE", 0, 0, 3, MAXPARA, MFLG_SLOW, 0, |
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{ m_unregistered, m_not_oper, m_ignore, me_gungline, mo_gungline, m_ignore } |
| 549 |
}; |
| 550 |
|
| 551 |
static void |
| 552 |
module_init(void) |
| 553 |
{ |
| 554 |
mod_add_cmd(&gline_msgtab); |
| 555 |
mod_add_cmd(&ungline_msgtab); |
| 556 |
add_capability("GLN", CAP_GLN, 1); |
| 557 |
} |
| 558 |
|
| 559 |
static void |
| 560 |
module_exit(void) |
| 561 |
{ |
| 562 |
mod_del_cmd(&gline_msgtab); |
| 563 |
mod_del_cmd(&ungline_msgtab); |
| 564 |
delete_capability("GLN"); |
| 565 |
} |
| 566 |
|
| 567 |
struct module module_entry = { |
| 568 |
.node = { NULL, NULL, NULL }, |
| 569 |
.name = NULL, |
| 570 |
.version = "$Revision$", |
| 571 |
.handle = NULL, |
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.modinit = module_init, |
| 573 |
.modexit = module_exit, |
| 574 |
.flags = 0 |
| 575 |
}; |
