/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_whois.c: Shows who a user was.
 *
 *  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 "whowas.h"
#include "client.h"
#include "common.h"
#include "hash.h"
#include "match.h"
#include "ircd.h"
#include "ircd_defs.h"
#include "numeric.h"
#include "s_serv.h"
#include "s_user.h"
#include "send.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"

static int m_whowas(struct Client *, struct Client *, int, const char **);

struct Message whowas_msgtab = {
    "WHOWAS", 0, 0, 0, MFLG_SLOW,
    {mg_unreg, {m_whowas, 2}, mg_ignore, mg_ignore, mg_ignore, {m_whowas, 2}}
};

mapi_clist_av1 whowas_clist[] = { &whowas_msgtab, NULL };
DECLARE_MODULE_AV1(whowas, NULL, NULL, whowas_clist, NULL, NULL, "$Revision: 1717 $");

/*
** m_whowas
**      parv[1] = nickname queried
*/
static int
m_whowas(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    struct Whowas *temp;
    int cur = 0;
    int max = -1, found = 0;
    char *p;
    const char *nick;
    char tbuf[26];

    static time_t last_used = 0L;

    if(!IsOper(source_p)) {
        if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time()) {
            sendto_one(source_p, form_str(RPL_LOAD2HI),
                       me.name, source_p->name, "WHOWAS");
            sendto_one(source_p, form_str(RPL_ENDOFWHOWAS),
                       me.name, source_p->name, parv[1]);
            return 0;
        } else
            last_used = rb_current_time();
    }


    if(parc > 2)
        max = atoi(parv[2]);

#if 0
    if(parc > 3)
        if(hunt_server(client_p, source_p, ":%s WHOWAS %s %s :%s", 3, parc, parv))
            return 0;
#endif

    if((p = strchr(parv[1], ',')))
        *p = '\0';

    nick = parv[1];

    temp = WHOWASHASH[hash_whowas_name(nick)];
    found = 0;
    for (; temp; temp = temp->next) {
        if(!irccmp(nick, temp->name)) {
            sendto_one(source_p, form_str(RPL_WHOWASUSER),
                       me.name, source_p->name, temp->name,
                       temp->username, temp->hostname, temp->realname);
            if (MyOper(source_p) && !EmptyString(temp->sockhost))
#if 0
                sendto_one(source_p, form_str(RPL_WHOWASREAL),
                           me.name, source_p->name, temp->name,
                           "<untracked>", temp->sockhost);
#else
                sendto_one_numeric(source_p, RPL_WHOISACTUALLY,
                                   form_str(RPL_WHOISACTUALLY),
                                   temp->name, temp->sockhost);
#endif
            if (!EmptyString(temp->suser))
                sendto_one_numeric(source_p, RPL_WHOISLOGGEDIN,
                                   "%s %s :was logged in as",
                                   temp->name, temp->suser);
            sendto_one_numeric(source_p, RPL_WHOISSERVER,
                               form_str(RPL_WHOISSERVER),
                               temp->name, temp->servername,
                               rb_ctime(temp->logoff, tbuf, sizeof(tbuf)));
            cur++;
            found++;
        }
        if(max > 0 && cur >= max)
            break;
    }

    if(!found)
        sendto_one(source_p, form_str(ERR_WASNOSUCHNICK),
                   me.name, source_p->name, nick);

    sendto_one(source_p, form_str(RPL_ENDOFWHOWAS),
               me.name, source_p->name, parv[1]);
    return 0;
}