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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2014 ircd-hybrid 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
*/
/*! \file whowas.c
* \brief WHOWAS user cache.
* \version $Id$
*/
#include "stdinc.h"
#include "list.h"
#include "whowas.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
static struct Whowas WHOWAS[NICKNAMEHISTORYLENGTH];
dlink_list WHOWASHASH[HASHSIZE];
void
whowas_init(void)
{
unsigned int idx;
for (idx = 0; idx < NICKNAMEHISTORYLENGTH; ++idx)
WHOWAS[idx].hashv = -1;
}
void
whowas_add_history(struct Client *client_p, const int online)
{
static unsigned int whowas_next = 0;
struct Whowas *who = &WHOWAS[whowas_next];
assert(client_p && client_p->servptr);
if (++whowas_next == NICKNAMEHISTORYLENGTH)
whowas_next = 0;
if (who->hashv != -1)
{
if (who->online)
dlinkDelete(&who->cnode, &who->online->whowas);
dlinkDelete(&who->tnode, &WHOWASHASH[who->hashv]);
}
who->hashv = strhash(client_p->name);
who->shide = IsHidden(client_p->servptr) != 0;
who->logoff = CurrentTime;
strlcpy(who->name, client_p->name, sizeof(who->name));
strlcpy(who->username, client_p->username, sizeof(who->username));
strlcpy(who->hostname, client_p->host, sizeof(who->hostname));
strlcpy(who->realname, client_p->info, sizeof(who->realname));
strlcpy(who->servername, client_p->servptr->name, sizeof(who->servername));
if (online)
{
who->online = client_p;
dlinkAdd(who, &who->cnode, &client_p->whowas);
}
else
who->online = NULL;
dlinkAdd(who, &who->tnode, &WHOWASHASH[who->hashv]);
}
void
whowas_off_history(struct Client *client_p)
{
dlink_node *ptr = NULL, *ptr_next = NULL;
DLINK_FOREACH_SAFE(ptr, ptr_next, client_p->whowas.head)
{
struct Whowas *temp = ptr->data;
temp->online = NULL;
dlinkDelete(&temp->cnode, &client_p->whowas);
}
}
struct Client *
whowas_get_history(const char *nick, time_t timelimit)
{
dlink_node *ptr = NULL;
timelimit = CurrentTime - timelimit;
DLINK_FOREACH(ptr, WHOWASHASH[strhash(nick)].head)
{
struct Whowas *temp = ptr->data;
if (temp->logoff < timelimit)
continue;
if (irccmp(nick, temp->name))
continue;
return temp->online;
}
return NULL;
}
void
whowas_count_memory(unsigned int *const count, uint64_t *const bytes)
{
const struct Whowas *tmp = &WHOWAS[0];
unsigned int i = 0;
for (; i < NICKNAMEHISTORYLENGTH; ++i, ++tmp)
{
if (tmp->hashv != -1)
{
(*count)++;
(*bytes) += sizeof(struct Whowas);
}
}
}
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