/*
 * m_sendbans.c: sends all permanent resvs and xlines to given server
 *
 * Copyright (C) 2008 Jilles Tjoelker
 * Copyright (C) 2008 charybdis development team
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1.Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * 2.Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 3.The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "stdinc.h"
#include "client.h"
#include "common.h"
#include "ircd.h"
#include "match.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_serv.h"
#include "s_newconf.h"
#include "send.h"
#include "msg.h"
#include "hash.h"
#include "modules.h"

static int mo_sendbans(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);

struct Message sendbans_msgtab = {
    "SENDBANS", 0, 0, 0, MFLG_SLOW,
    {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_sendbans, 2}}
};

mapi_clist_av1 sendbans_clist[] = {
    &sendbans_msgtab,
    NULL
};

DECLARE_MODULE_AV1(sendbans, NULL, NULL, sendbans_clist, NULL, NULL, "$Revision$");

static const char *expand_xline(const char *mask)
{
    static char buf[512];
    const char *p;
    char *q;

    if (!strchr(mask, ' '))
        return mask;
    if (strlen(mask) > 250)
        return NULL;
    p = mask;
    q = buf;
    while (*p != '\0') {
        if (*p == ' ')
            *q++ = '\\', *q++ = 's';
        else
            *q++ = *p;
        p++;
    }
    *q = '\0';
    return buf;
}

static int mo_sendbans(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    struct ConfItem *aconf;
    rb_dlink_node *ptr;
    int i, count;
    const char *target, *mask2;
    struct Client *server_p;

    if (!IsOperRemoteBan(source_p)) {
        sendto_one(source_p, form_str(ERR_NOPRIVS),
                   me.name, source_p->name, "remoteban");
        return 0;
    }
    if (!IsOperXline(source_p)) {
        sendto_one(source_p, form_str(ERR_NOPRIVS),
                   me.name, source_p->name, "xline");
        return 0;
    }
    if (!IsOperResv(source_p)) {
        sendto_one(source_p, form_str(ERR_NOPRIVS),
                   me.name, source_p->name, "resv");
        return 0;
    }

    target = parv[1];
    count = 0;
    RB_DLINK_FOREACH(ptr, global_serv_list.head) {
        server_p = ptr->data;
        if (IsMe(server_p))
            continue;
        if (match(target, server_p->name))
            count++;
    }
    if (count == 0) {
        sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
                           form_str(ERR_NOSUCHSERVER), target);
        return 0;
    }

    sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                           "%s!%s@%s is sending resvs and xlines to %s",
                           source_p->name, source_p->username, source_p->host,
                           target);

    RB_DLINK_FOREACH(ptr, resv_conf_list.head) {
        aconf = ptr->data;
        if (aconf->hold)
            continue;
        sendto_match_servs(source_p, target,
                           CAP_ENCAP, NOCAPS,
                           "ENCAP %s RESV 0 %s 0 :%s",
                           target, aconf->host, aconf->passwd);
    }

    HASH_WALK(i, R_MAX, ptr, resvTable) {
        aconf = ptr->data;
        if (aconf->hold)
            continue;
        sendto_match_servs(source_p, target,
                           CAP_ENCAP, NOCAPS,
                           "ENCAP %s RESV 0 %s 0 :%s",
                           target, aconf->host, aconf->passwd);
    }
    HASH_WALK_END

    RB_DLINK_FOREACH(ptr, xline_conf_list.head) {
        aconf = ptr->data;
        if (aconf->hold)
            continue;
        mask2 = expand_xline(aconf->host);
        if (mask2 == NULL) {
            sendto_one_notice(source_p, ":Skipping xline [%s]",
                              aconf->host);
            continue;
        }
        sendto_match_servs(source_p, target,
                           CAP_ENCAP, NOCAPS,
                           "ENCAP %s XLINE 0 %s 2 :%s",
                           target, mask2, aconf->passwd);
    }

    return 0;
}