elemental-ircd/modules/m_kline.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_kline.c: Bans/unbans a user.
 *
 *  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
 *
 *  $Id$
 */

#include "stdinc.h"
#include "channel.h"
#include "class.h"
#include "client.h"
#include "common.h"
#include "match.h"
#include "ircd.h"
#include "hostmask.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "logger.h"
#include "send.h"
#include "hash.h"
#include "s_serv.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "reject.h"
#include "bandbi.h"
#include "operhash.h"

static int mo_kline(struct Client *, struct Client *, int, const char **);
static int ms_kline(struct Client *, struct Client *, int, const char **);
static int me_kline(struct Client *, struct Client *, int, const char **);
static int mo_unkline(struct Client *, struct Client *, int, const char **);
static int ms_unkline(struct Client *, struct Client *, int, const char **);
static int me_unkline(struct Client *, struct Client *, int, const char **);

struct Message kline_msgtab = {
    "KLINE", 0, 0, 0, MFLG_SLOW,
    {mg_unreg, mg_not_oper, {ms_kline, 5}, {ms_kline, 5}, {me_kline, 5}, {mo_kline, 3}}
};

struct Message unkline_msgtab = {
    "UNKLINE", 0, 0, 0, MFLG_SLOW,
    {mg_unreg, mg_not_oper, {ms_unkline, 4}, {ms_unkline, 4}, {me_unkline, 3}, {mo_unkline, 2}}
};

mapi_clist_av1 kline_clist[] = { &kline_msgtab, &unkline_msgtab, NULL };

DECLARE_MODULE_AV1(kline, NULL, NULL, kline_clist, NULL, NULL, "$Revision$");

/* Local function prototypes */
static int find_user_host(struct Client *source_p, const char *userhost, char *user, char *host);
static int valid_comment(struct Client *source_p, char *comment);
static int valid_user_host(struct Client *source_p, const char *user, const char *host);

static void handle_remote_kline(struct Client *source_p, int tkline_time,
                                const char *user, const char *host, const char *reason);
static void apply_kline(struct Client *source_p, struct ConfItem *aconf,
                        const char *reason, const char *oper_reason);
static void apply_tkline(struct Client *source_p, struct ConfItem *aconf,
                         const char *, const char *, int);
static void apply_prop_kline(struct Client *source_p, struct ConfItem *aconf,
                             const char *, const char *, int);
static int already_placed_kline(struct Client *, const char *, const char *, int);

static void handle_remote_unkline(struct Client *source_p, const char *user, const char *host);
static void remove_permkline_match(struct Client *, struct ConfItem *);
static int remove_temp_kline(struct Client *, struct ConfItem *);
static void remove_prop_kline(struct Client *, struct ConfItem *);

/* mo_kline()
 *
 *   parv[1] - temp time or user@host
 *   parv[2] - user@host, "ON", or reason
 *   parv[3] - "ON", reason, or server to target
 *   parv[4] - server to target, or reason
 *   parv[5] - reason
 */
static int
mo_kline(struct Client *client_p, struct Client *source_p, int parc, const char **parv)
{
    char def[] = "No Reason";
    char user[USERLEN + 2];
    char host[HOSTLEN + 2];
    char *reason = def;
    char *oper_reason;
    const char *target_server = NULL;
    struct ConfItem *aconf;
    int tkline_time = 0;
    int loc = 1;
    int propagated = ConfigFileEntry.use_propagated_bans;

    if(!IsOperK(source_p)) {
        sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline");
        return 0;
    }

    if((tkline_time = valid_temp_time(parv[loc])) >= 0)
        loc++;
    /* we just set tkline_time to -1! */
    else
        tkline_time = 0;

    if(find_user_host(source_p, parv[loc], user, host) == 0)
        return 0;

    loc++;

    if(parc >= loc + 2 && !irccmp(parv[loc], "ON")) {
        if(!IsOperRemoteBan(source_p)) {
            sendto_one(source_p, form_str(ERR_NOPRIVS),
                       me.name, source_p->name, "remoteban");
            return 0;
        }

        target_server = parv[loc + 1];
        loc += 2;
    }

    if(parc <= loc || EmptyString(parv[loc])) {
        sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
                   me.name, source_p->name, "KLINE");
        return 0;
    }

    reason = LOCAL_COPY(parv[loc]);

    if(target_server != NULL) {
        propagate_generic(source_p, "KLINE", target_server, CAP_KLN,
                          "%d %s %s :%s", tkline_time, user, host, reason);

        /* If we are sending it somewhere that doesnt include us, stop */
        if(!match(target_server, me.name))
            return 0;

        /* Set as local-only. */
        propagated = 0;
    }
    /* if we have cluster servers, send it to them.. */
    else if(!propagated && rb_dlink_list_length(&cluster_conf_list) > 0)
        cluster_generic(source_p, "KLINE",
                        (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE, CAP_KLN,
                        "%lu %s %s :%s", tkline_time, user, host, reason);

    if(!valid_user_host(source_p, user, host) ||
       !valid_comment(source_p, reason))
        return 0;

    if(!valid_wild_card(user, host)) {
        sendto_one_notice(source_p,
                          ":Please include at least %d non-wildcard "
                          "characters with the user@host",
                          ConfigFileEntry.min_nonwildcard);
        return 0;
    }

    if(propagated && tkline_time == 0) {
        sendto_one_notice(source_p, ":Cannot set a permanent global ban");
        return 0;
    }

    if(already_placed_kline(source_p, user, host, tkline_time))
        return 0;

    rb_set_time();
    aconf = make_conf();
    aconf->status = CONF_KILL;
    aconf->created = rb_current_time();
    aconf->host = rb_strdup(host);
    aconf->user = rb_strdup(user);
    aconf->port = 0;
    aconf->info.oper = operhash_add(get_oper_name(source_p));

    /* Look for an oper reason */
    if((oper_reason = strchr(reason, '|')) != NULL) {
        *oper_reason = '\0';
        oper_reason++;

        if(!EmptyString(oper_reason))
            aconf->spasswd = rb_strdup(oper_reason);
    }
    aconf->passwd = rb_strdup(reason);

    if(propagated)
        apply_prop_kline(source_p, aconf, reason, oper_reason, tkline_time);
    else if(tkline_time > 0)
        apply_tkline(source_p, aconf, reason, oper_reason, tkline_time);
    else
        apply_kline(source_p, aconf, reason, oper_reason);

    if(ConfigFileEntry.kline_delay) {
        if(kline_queued == 0) {
            rb_event_addonce("check_klines", check_klines_event, NULL,
                             ConfigFileEntry.kline_delay);
            kline_queued = 1;
        }
    } else
        check_klines();

    return 0;
}

/* ms_kline()
 *
 *   parv[1] - server targeted at
 *   parv[2] - tkline time (0 if perm)
 *   parv[3] - user
 *   parv[4] - host
 *   parv[5] - reason
 */
static int
ms_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    int tkline_time = atoi(parv[2]);

    /* 1.5-3 and earlier contains a bug that allows remote klines to be
     * sent with an empty reason field.  This is a protocol violation,
     * but its not worth dropping the link over.. --anfl
     */
    if(parc < 6 || EmptyString(parv[5]))
        return 0;

    propagate_generic(source_p, "KLINE", parv[1], CAP_KLN,
                      "%d %s %s :%s", tkline_time, parv[3], parv[4], parv[5]);

    if(!match(parv[1], me.name))
        return 0;

    if(!IsPerson(source_p))
        return 0;

    handle_remote_kline(source_p, tkline_time, parv[3], parv[4], parv[5]);
    return 0;
}

static int
me_kline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    /* <tkline_time> <user> <host> :<reason> */
    if(!IsPerson(source_p))
        return 0;

    handle_remote_kline(source_p, atoi(parv[1]), parv[2], parv[3], parv[4]);
    return 0;
}

static void
handle_remote_kline(struct Client *source_p, int tkline_time,
                    const char *user, const char *host, const char *kreason)
{
    char *reason = LOCAL_COPY(kreason);
    struct ConfItem *aconf = NULL;
    char *oper_reason;

    if(!find_shared_conf(source_p->username, source_p->host,
                         source_p->servptr->name,
                         (tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE))
        return;

    if(!valid_user_host(source_p, user, host) ||
       !valid_comment(source_p, reason))
        return;

    if(!valid_wild_card(user, host)) {
        sendto_one_notice(source_p,
                          ":Please include at least %d non-wildcard "
                          "characters with the user@host",
                          ConfigFileEntry.min_nonwildcard);
        return;
    }

    if(already_placed_kline(source_p, user, host, tkline_time))
        return;

    aconf = make_conf();

    aconf->status = CONF_KILL;
    aconf->created = rb_current_time();
    aconf->user = rb_strdup(user);
    aconf->host = rb_strdup(host);
    aconf->info.oper = operhash_add(get_oper_name(source_p));

    /* Look for an oper reason */
    if((oper_reason = strchr(reason, '|')) != NULL) {
        *oper_reason = '\0';
        oper_reason++;

        if(!EmptyString(oper_reason))
            aconf->spasswd = rb_strdup(oper_reason);
    }
    aconf->passwd = rb_strdup(reason);

    if(tkline_time > 0)
        apply_tkline(source_p, aconf, reason, oper_reason, tkline_time);
    else
        apply_kline(source_p, aconf, reason, oper_reason);

    if(ConfigFileEntry.kline_delay) {
        if(kline_queued == 0) {
            rb_event_addonce("check_klines", check_klines_event, NULL,
                             ConfigFileEntry.kline_delay);
            kline_queued = 1;
        }
    } else
        check_klines();

    return;
}

/* mo_unkline()
 *
 *   parv[1] - kline to remove
 *   parv[2] - optional "ON"
 *   parv[3] - optional target server
 */
static int
mo_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    const char *user;
    char *host;
    char splat[] = "*";
    char *h = LOCAL_COPY(parv[1]);
    struct ConfItem *aconf;
    int propagated = 1;

    if(!IsOperUnkline(source_p)) {
        sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "unkline");
        return 0;
    }

    if((host = strchr(h, '@')) || *h == '*' || strchr(h, '.') || strchr(h, ':')) {
        /* Explicit user@host mask given */

        if(host) {	/* Found user@host */
            *host++ = '\0';

            /* check for @host */
            if(*h)
                user = h;
            else
                user = splat;

            /* check for user@ */
            if(!*host)
                host = splat;
        } else {
            user = splat;	/* no @ found, assume its *@somehost */
            host = h;
        }
    } else {
        sendto_one_notice(source_p, ":Invalid parameters");
        return 0;
    }

    /* possible remote kline.. */
    if((parc > 3) && (irccmp(parv[2], "ON") == 0)) {
        if(!IsOperRemoteBan(source_p)) {
            sendto_one(source_p, form_str(ERR_NOPRIVS),
                       me.name, source_p->name, "remoteban");
            return 0;
        }

        propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, "%s %s", user, host);

        if(match(parv[3], me.name) == 0)
            return 0;

        propagated = 0;
    }

    aconf = find_exact_conf_by_address(host, CONF_KILL, user);

    /* No clustering for removing a propagated kline */
    if(propagated && (aconf == NULL || !aconf->lifetime) &&
       rb_dlink_list_length(&cluster_conf_list) > 0)
        cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN,
                        "%s %s", user, host);

    if(aconf == NULL) {
        sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host);
        return 0;
    }

    if(aconf->lifetime) {
        if(propagated)
            remove_prop_kline(source_p, aconf);
        else
            sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host);
        return 0;
    }

    if(remove_temp_kline(source_p, aconf))
        return 0;

    remove_permkline_match(source_p, aconf);

    return 0;
}

/* ms_unkline()
 *
 *   parv[1] - target server
 *   parv[2] - user to unkline
 *   parv[3] - host to unkline
 */
static int
ms_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    /* parv[0]  parv[1]        parv[2]  parv[3]
     * oper     target server  user     host    */
    propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, "%s %s", parv[2], parv[3]);

    if(!match(parv[1], me.name))
        return 0;

    if(!IsPerson(source_p))
        return 0;

    handle_remote_unkline(source_p, parv[2], parv[3]);
    return 0;
}

static int
me_unkline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    /* user host */
    if(!IsPerson(source_p))
        return 0;

    handle_remote_unkline(source_p, parv[1], parv[2]);
    return 0;
}

static void
handle_remote_unkline(struct Client *source_p, const char *user, const char *host)
{
    struct ConfItem *aconf;

    if(!find_shared_conf(source_p->username, source_p->host,
                         source_p->servptr->name, SHARED_UNKLINE))
        return;

    aconf = find_exact_conf_by_address(host, CONF_KILL, user);
    if(aconf == NULL) {
        sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host);
        return;
    }
    if(aconf->lifetime) {
        sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host);
        return;
    }

    if(remove_temp_kline(source_p, aconf))
        return;

    remove_permkline_match(source_p, aconf);
}

/* apply_kline()
 *
 * inputs	-
 * output	- NONE
 * side effects	- kline as given, is added to the hashtable
 *		  and conf file
 */
static void
apply_kline(struct Client *source_p, struct ConfItem *aconf,
            const char *reason, const char *oper_reason)
{
    add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
    bandb_add(BANDB_KLINE, source_p, aconf->user, aconf->host,
              reason, EmptyString(oper_reason) ? NULL : oper_reason, 0);

    /* no oper reason.. */
    if(EmptyString(oper_reason)) {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added K-Line for [%s@%s] [%s]",
                               get_oper_name(source_p), aconf->user, aconf->host, reason);
        ilog(L_KLINE, "K %s 0 %s %s %s",
             get_oper_name(source_p), aconf->user, aconf->host, reason);
    } else {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added K-Line for [%s@%s] [%s|%s]",
                               get_oper_name(source_p), aconf->user, aconf->host,
                               reason, oper_reason);
        ilog(L_KLINE, "K %s 0 %s %s %s|%s",
             get_oper_name(source_p), aconf->user, aconf->host, reason, oper_reason);
    }

    sendto_one_notice(source_p, ":Added K-Line [%s@%s]",
                      aconf->user, aconf->host);
}

/* apply_tkline()
 *
 * inputs	-
 * output	- NONE
 * side effects	- tkline as given is placed
 */
static void
apply_tkline(struct Client *source_p, struct ConfItem *aconf,
             const char *reason, const char *oper_reason, int tkline_time)
{
    aconf->hold = rb_current_time() + tkline_time;
    add_temp_kline(aconf);

    /* no oper reason.. */
    if(EmptyString(oper_reason)) {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added temporary %d min. K-Line for [%s@%s] [%s]",
                               get_oper_name(source_p), tkline_time / 60,
                               aconf->user, aconf->host, reason);
        ilog(L_KLINE, "K %s %d %s %s %s",
             get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason);
    } else {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added temporary %d min. K-Line for [%s@%s] [%s|%s]",
                               get_oper_name(source_p), tkline_time / 60,
                               aconf->user, aconf->host, reason, oper_reason);
        ilog(L_KLINE, "K %s %d %s %s %s|%s",
             get_oper_name(source_p), tkline_time / 60,
             aconf->user, aconf->host, reason, oper_reason);
    }

    sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]",
                      tkline_time / 60, aconf->user, aconf->host);
}

static void
apply_prop_kline(struct Client *source_p, struct ConfItem *aconf,
                 const char *reason, const char *oper_reason, int tkline_time)
{
    aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY;
    aconf->hold = rb_current_time() + tkline_time;
    aconf->lifetime = aconf->hold;

    replace_old_ban(aconf);

    rb_dlinkAddAlloc(aconf, &prop_bans);
    add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);

    /* no oper reason.. */
    if(EmptyString(oper_reason)) {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added global %d min. K-Line for [%s@%s] [%s]",
                               get_oper_name(source_p), tkline_time / 60,
                               aconf->user, aconf->host, reason);
        ilog(L_KLINE, "K %s %d %s %s %s",
             get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason);
    } else {
        sendto_realops_snomask(SNO_GENERAL, L_ALL,
                               "%s added global %d min. K-Line for [%s@%s] [%s|%s]",
                               get_oper_name(source_p), tkline_time / 60,
                               aconf->user, aconf->host, reason, oper_reason);
        ilog(L_KLINE, "K %s %d %s %s %s|%s",
             get_oper_name(source_p), tkline_time / 60,
             aconf->user, aconf->host, reason, oper_reason);
    }

    sendto_one_notice(source_p, ":Added global %d min. K-Line [%s@%s]",
                      tkline_time / 60, aconf->user, aconf->host);

    sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
                  ":%s BAN K %s %s %lu %d %d * :%s%s%s",
                  source_p->id, aconf->user, aconf->host,
                  (unsigned long)aconf->created,
                  (int)(aconf->hold - aconf->created),
                  (int)(aconf->lifetime - aconf->created),
                  reason,
                  oper_reason ? "|" : "",
                  oper_reason ? oper_reason : "");
}

/* find_user_host()
 *
 * inputs	- client placing kline, user@host, user buffer, host buffer
 * output	- 0 if not ok to kline, 1 to kline i.e. if valid user host
 * side effects -
 */
static int
find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost)
{
    char *hostp;

    hostp = strchr(userhost, '@');

    if(hostp != NULL) {	/* I'm a little user@host */
        *(hostp++) = '\0';	/* short and squat */
        if(*userhost)
            rb_strlcpy(luser, userhost, USERLEN + 1);	/* here is my user */
        else
            strcpy(luser, "*");
        if(*hostp)
            rb_strlcpy(lhost, hostp, HOSTLEN + 1);	/* here is my host */
        else
            strcpy(lhost, "*");
    } else {
        /* no '@', no '.', so its not a user@host or host, therefore
         * its a nick, which support was removed for.
         */
        if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL) {
            sendto_one_notice(source_p, ":K-Line must be a user@host or host");
            return 0;
        }

        luser[0] = '*';	/* no @ found, assume its *@somehost */
        luser[1] = '\0';
        rb_strlcpy(lhost, userhost, HOSTLEN + 1);
    }

    return 1;
}

/* valid_user_host()
 *
 * inputs       - user buffer, host buffer
 * output	- 0 if invalid, 1 if valid
 * side effects -
 */
static int
valid_user_host(struct Client *source_p, const char *luser, const char *lhost)
{
    /* # is invalid, as are '!' (n!u@h kline) and '@' (u@@h kline) */
    if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!') || strchr(lhost, '@')) {
        sendto_one_notice(source_p, ":Invalid K-Line");
        return 0;
    }

    return 1;
}

/*
 * valid_comment
 * inputs	- pointer to client
 *              - pointer to comment
 * output       - 0 if no valid comment, 1 if valid
 * side effects - NONE
 */
static int
valid_comment(struct Client *source_p, char *comment)
{
    if(strchr(comment, '"')) {
        sendto_one_notice(source_p, ":Invalid character '\"' in comment");
        return 0;
    }

    if(strlen(comment) > BANREASONLEN)
        comment[BANREASONLEN] = '\0';

    return 1;
}

/* already_placed_kline()
 *
 * inputs       - source to notify, user@host to check, tkline time
 * outputs      - 1 if a perm kline or a tkline when a tkline is being
 *                set exists, else 0
 * side effects - notifies source_p kline exists
 */
/* Note: This currently works if the new K-line is a special case of an
 *       existing K-line, but not the other way round. To do that we would
 *       have to walk the hash and check every existing K-line. -A1kmm.
 */
static int
already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline)
{
    const char *reason, *p;
    struct rb_sockaddr_storage iphost, *piphost;
    struct ConfItem *aconf;
    int t, bits;

    aconf = find_exact_conf_by_address(lhost, CONF_KILL, luser);
    if(aconf == NULL && ConfigFileEntry.non_redundant_klines) {
        bits = 0;
        if((t = parse_netmask(lhost, (struct sockaddr *) &iphost, &bits)) != HM_HOST) {
#ifdef RB_IPV6
            if(t == HM_IPV6)
                t = AF_INET6;
            else
#endif
                t = AF_INET;

            piphost = &iphost;
        } else
            piphost = NULL;

        aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *) piphost,
                                     CONF_KILL, t, luser, NULL);
        if(aconf != NULL) {
            /* The above was really a lookup of a single IP,
             * so check if the new kline is wider than the
             * existing one.
             * -- jilles
             */
            p = strchr(aconf->host, '/');
            if(bits > 0 && (p == NULL || bits < atoi(p + 1)))
                aconf = NULL;
        }
    }
    if(aconf != NULL) {
        /* setting a tkline, or existing one is perm */
        if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0)) {
            reason = aconf->passwd ? aconf->passwd : "<No Reason>";

            sendto_one_notice(source_p,
                              ":[%s@%s] already K-Lined by [%s@%s] - %s",
                              luser, lhost, aconf->user, aconf->host, reason);
            return 1;
        }
    }

    return 0;
}

/* remove_permkline_match()
 *
 * hunts for a permanent kline, and removes it.
 */
static void
remove_permkline_match(struct Client *source_p, struct ConfItem *aconf)
{
    sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", aconf->user, aconf->host);

    sendto_realops_snomask(SNO_GENERAL, L_ALL,
                           "%s has removed the K-Line for: [%s@%s]",
                           get_oper_name(source_p), aconf->user, aconf->host);

    ilog(L_KLINE, "UK %s %s %s", get_oper_name(source_p), aconf->user, aconf->host);

    remove_reject_mask(aconf->user, aconf->host);
    bandb_del(BANDB_KLINE, aconf->user, aconf->host);
    delete_one_address_conf(aconf->host, aconf);

    return;
}

/* remove_temp_kline()
 *
 * inputs       - username, hostname to unkline
 * outputs      -
 * side effects - tries to unkline anything that matches
 */
static int
remove_temp_kline(struct Client *source_p, struct ConfItem *aconf)
{
    rb_dlink_node *ptr;
    int i;

    for(i = 0; i < LAST_TEMP_TYPE; i++) {
        RB_DLINK_FOREACH(ptr, temp_klines[i].head) {
            if(aconf == ptr->data) {
                sendto_one_notice(source_p,
                                  ":Un-klined [%s@%s] from temporary k-lines",
                                  aconf->user, aconf->host);
                sendto_realops_snomask(SNO_GENERAL, L_ALL,
                                       "%s has removed the temporary K-Line for: [%s@%s]",
                                       get_oper_name(source_p), aconf->user,
                                       aconf->host);

                ilog(L_KLINE, "UK %s %s %s",
                     get_oper_name(source_p), aconf->user, aconf->host);
                rb_dlinkDestroy(ptr, &temp_klines[i]);
                remove_reject_mask(aconf->user, aconf->host);
                delete_one_address_conf(aconf->host, aconf);
                return YES;
            }
        }
    }

    return NO;
}

static void
remove_prop_kline(struct Client *source_p, struct ConfItem *aconf)
{
    rb_dlink_node *ptr;

    ptr = rb_dlinkFind(aconf, &prop_bans);
    if (!ptr)
        return;
    sendto_one_notice(source_p,
                      ":Un-klined [%s@%s] from global k-lines",
                      aconf->user, aconf->host);
    sendto_realops_snomask(SNO_GENERAL, L_ALL,
                           "%s has removed the global K-Line for: [%s@%s]",
                           get_oper_name(source_p), aconf->user,
                           aconf->host);

    ilog(L_KLINE, "UK %s %s %s",
         get_oper_name(source_p), aconf->user, aconf->host);
    if(aconf->created < rb_current_time())
        aconf->created = rb_current_time();
    else
        aconf->created++;
    aconf->hold = aconf->created;
    operhash_delete(aconf->info.oper);
    aconf->info.oper = operhash_add(get_oper_name(source_p));
    aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY;
    sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
                  ":%s BAN K %s %s %lu %d %d * :*",
                  source_p->id, aconf->user, aconf->host,
                  (unsigned long)aconf->created,
                  0,
                  (int)(aconf->lifetime - aconf->created));
    remove_reject_mask(aconf->user, aconf->host);
    deactivate_conf(aconf, ptr);
}