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/************************************************************************
* IRC - Internet Relay Chat, src/whowas.c
* Copyright (C) 1990 Markku Savela
*
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "h.h"
#include "hash.h"
#include "proto.h"
#include "msg.h"
#include <string.h>
/* externally defined functions */
unsigned int hash_whowas_name(char *); /* defined in hash.c */
/* internally defined function */
static void add_whowas_to_clist(aWhowas **, aWhowas *);
static void del_whowas_from_clist(aWhowas **, aWhowas *);
static void add_whowas_to_list(aWhowas **, aWhowas *);
static void del_whowas_from_list(aWhowas **, aWhowas *);
aWhowas MODVAR WHOWAS[NICKNAMEHISTORYLENGTH];
aWhowas MODVAR *WHOWASHASH[WW_MAX];
MODVAR int whowas_next = 0;
#define AllocCpy(x,y) x = (char *) MyMalloc(strlen(y) + 1); strcpy(x,y)
#define SafeFree(x) if (x) { MyFree((x)); (x) = NULL; }
void add_history(aClient *cptr, int online)
{
aWhowas *new;
new = &WHOWAS[whowas_next];
if (new->hashv != -1)
{
SafeFree(new->name);
SafeFree(new->hostname);
SafeFree(new->virthost);
SafeFree(new->realname);
SafeFree(new->username);
new->servername = NULL;
if (new->online)
del_whowas_from_clist(&(new->online->user->whowas), new);
del_whowas_from_list(&WHOWASHASH[new->hashv], new);
}
new->hashv = hash_whowas_name(cptr->name);
new->logoff = TStime();
new->umodes = cptr->umodes;
AllocCpy(new->name, cptr->name);
AllocCpy(new->username, cptr->user->username);
AllocCpy(new->hostname, cptr->user->realhost);
if (cptr->user->virthost)
{
AllocCpy(new->virthost, cptr->user->virthost);
}
else
new->virthost = strdup("");
new->servername = cptr->user->server;
AllocCpy(new->realname, cptr->info);
/* Its not string copied, a pointer to the scache hash is copied
-Dianora
*/
/* strncpyzt(new->servername, cptr->user->server,HOSTLEN); */
new->servername = cptr->user->server;
if (online)
{
new->online = cptr;
add_whowas_to_clist(&(cptr->user->whowas), new);
}
else
new->online = NULL;
add_whowas_to_list(&WHOWASHASH[new->hashv], new);
whowas_next++;
if (whowas_next == NICKNAMEHISTORYLENGTH)
whowas_next = 0;
}
void off_history(aClient *cptr)
{
aWhowas *temp, *next;
for (temp = cptr->user->whowas; temp; temp = next)
{
next = temp->cnext;
temp->online = NULL;
del_whowas_from_clist(&(cptr->user->whowas), temp);
}
}
aClient *get_history(char *nick, time_t timelimit)
{
aWhowas *temp;
int blah;
timelimit = TStime() - timelimit;
blah = hash_whowas_name(nick);
temp = WHOWASHASH[blah];
for (; temp; temp = temp->next)
{
if (mycmp(nick, temp->name))
continue;
if (temp->logoff < timelimit)
continue;
return temp->online;
}
return NULL;
}
void count_whowas_memory(int *wwu, u_long *wwum)
{
aWhowas *tmp;
int i;
int u = 0;
u_long um = 0;
/* count the number of used whowas structs in 'u' */
/* count up the memory used of whowas structs in um */
for (i = 0, tmp = &WHOWAS[0]; i < NICKNAMEHISTORYLENGTH; i++, tmp++)
if (tmp->hashv != -1)
{
u++;
um += sizeof(aWhowas);
}
*wwu = u;
*wwum = um;
return;
}
void initwhowas()
{
int i;
for (i = 0; i < NICKNAMEHISTORYLENGTH; i++)
{
bzero((char *)&WHOWAS[i], sizeof(aWhowas));
WHOWAS[i].hashv = -1;
}
for (i = 0; i < WW_MAX; i++)
WHOWASHASH[i] = NULL;
}
static void add_whowas_to_clist(aWhowas ** bucket, aWhowas * whowas)
{
whowas->cprev = NULL;
if ((whowas->cnext = *bucket) != NULL)
whowas->cnext->cprev = whowas;
*bucket = whowas;
}
static void del_whowas_from_clist(aWhowas ** bucket, aWhowas * whowas)
{
if (whowas->cprev)
whowas->cprev->cnext = whowas->cnext;
else
*bucket = whowas->cnext;
if (whowas->cnext)
whowas->cnext->cprev = whowas->cprev;
}
static void add_whowas_to_list(aWhowas ** bucket, aWhowas * whowas)
{
whowas->prev = NULL;
if ((whowas->next = *bucket) != NULL)
whowas->next->prev = whowas;
*bucket = whowas;
}
static void del_whowas_from_list(aWhowas ** bucket, aWhowas * whowas)
{
if (whowas->prev)
whowas->prev->next = whowas->next;
else
*bucket = whowas->next;
if (whowas->next)
whowas->next->prev = whowas->prev;
}
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