*
* 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
+ * Copyright (C) 2002-2012 ircd-ratbox development team
+ * Copyright (C) 2016 Ariadne Conill <ariadne@dereferenced.org>
*
* 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
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
- *
- * $Id: whowas.c 1717 2006-07-04 14:41:11Z jilles $
*/
#include "stdinc.h"
-
-#include "whowas.h"
-#include "client.h"
-#include "common.h"
#include "hash.h"
+#include "whowas.h"
#include "match.h"
#include "ircd.h"
-#include "ircd_defs.h"
#include "numeric.h"
+#include "s_assert.h"
#include "s_serv.h"
#include "s_user.h"
#include "send.h"
#include "s_conf.h"
+#include "client.h"
+#include "send.h"
+#include "logger.h"
#include "scache.h"
-#include "s_assert.h"
+#include "rb_radixtree.h"
-/* internally defined function */
-static void add_whowas_to_clist(struct Whowas **, struct Whowas *);
-static void del_whowas_from_clist(struct Whowas **, struct Whowas *);
-static void add_whowas_to_list(struct Whowas **, struct Whowas *);
-static void del_whowas_from_list(struct Whowas **, struct Whowas *);
+struct whowas_top
+{
+ char *name;
+ rb_dlink_list wwlist;
+};
-struct Whowas WHOWAS[NICKNAMEHISTORYLENGTH];
-struct Whowas *WHOWASHASH[WW_MAX];
+static rb_radixtree *whowas_tree = NULL;
+static rb_dlink_list whowas_list = {NULL, NULL, 0};
+static unsigned int whowas_list_length = NICKNAMEHISTORYLENGTH;
+static void whowas_trim(void *unused);
-static int whowas_next = 0;
+static void
+whowas_free_wtop(struct whowas_top *wtop)
+{
+ if(rb_dlink_list_length(&wtop->wwlist) == 0)
+ {
+ rb_radixtree_delete(whowas_tree, wtop->name);
+ rb_free(wtop->name);
+ rb_free(wtop);
+ }
+}
-unsigned int hash_whowas_name(const char *name)
+static struct whowas_top *
+whowas_get_top(const char *name)
{
- return fnv_hash_upper((const unsigned char *) name, WW_MAX_BITS);
+ struct whowas_top *wtop;
+
+ wtop = rb_radixtree_retrieve(whowas_tree, name);
+ if (wtop != NULL)
+ return wtop;
+
+ wtop = rb_malloc(sizeof(struct whowas_top));
+ wtop->name = rb_strdup(name);
+ rb_radixtree_add(whowas_tree, wtop->name, wtop);
+
+ return wtop;
}
-void add_history(struct Client *client_p, int online)
+rb_dlink_list *
+whowas_get_list(const char *name)
{
- struct Whowas *who = &WHOWAS[whowas_next];
+ struct whowas_top *wtop;
+ wtop = rb_radixtree_retrieve(whowas_tree, name);
+ if(wtop == NULL)
+ return NULL;
+ return &wtop->wwlist;
+}
+void
+whowas_add_history(struct Client *client_p, int online)
+{
+ struct whowas_top *wtop;
+ struct Whowas *who;
s_assert(NULL != client_p);
if(client_p == NULL)
return;
- if(who->hashv != -1)
- {
- if(who->online)
- del_whowas_from_clist(&(who->online->whowas), who);
- del_whowas_from_list(&WHOWASHASH[who->hashv], who);
- }
- who->hashv = hash_whowas_name(client_p->name);
+ /* trim some of the entries if we're getting well over our history length */
+ if(rb_dlink_list_length(&whowas_list) > whowas_list_length + 100)
+ whowas_trim(NULL);
+
+ wtop = whowas_get_top(client_p->name);
+ who = rb_malloc(sizeof(struct Whowas));
+ who->wtop = wtop;
who->logoff = rb_current_time();
- /*
- * NOTE: strcpy ok here, the sizes in the client struct MUST
- * match the sizes in the whowas struct
- */
+
rb_strlcpy(who->name, client_p->name, sizeof(who->name));
- strcpy(who->username, client_p->username);
- strcpy(who->hostname, client_p->host);
- strcpy(who->realname, client_p->info);
- strcpy(who->suser, client_p->user->suser);
- strcpy(who->sockhost, client_p->sockhost);
+ rb_strlcpy(who->username, client_p->username, sizeof(who->username));
+ rb_strlcpy(who->hostname, client_p->host, sizeof(who->hostname));
+ rb_strlcpy(who->realname, client_p->info, sizeof(who->realname));
+ rb_strlcpy(who->sockhost, client_p->sockhost, sizeof(who->sockhost));
+ rb_strlcpy(who->suser, client_p->user->suser, sizeof(who->suser));
+
who->flags = (IsIPSpoof(client_p) ? WHOWAS_IP_SPOOFING : 0) |
(IsDynSpoof(client_p) ? WHOWAS_DYNSPOOF : 0);
+ /* this is safe do to with the servername cache */
who->servername = scache_get_name(client_p->servptr->serv->nameinfo);
if(online)
{
who->online = client_p;
- add_whowas_to_clist(&(client_p->whowas), who);
+ rb_dlinkAdd(who, &who->cnode, &client_p->whowas_clist);
}
else
who->online = NULL;
- add_whowas_to_list(&WHOWASHASH[who->hashv], who);
- whowas_next++;
- if(whowas_next == NICKNAMEHISTORYLENGTH)
- whowas_next = 0;
+
+ rb_dlinkAdd(who, &who->wnode, &wtop->wwlist);
+ rb_dlinkAdd(who, &who->whowas_node, &whowas_list);
}
-void off_history(struct Client *client_p)
+
+void
+whowas_off_history(struct Client *client_p)
{
- struct Whowas *temp, *next;
+ rb_dlink_node *ptr, *next;
- for (temp = client_p->whowas; temp; temp = next)
+ RB_DLINK_FOREACH_SAFE(ptr, next, client_p->whowas_clist.head)
{
- next = temp->cnext;
- temp->online = NULL;
- del_whowas_from_clist(&(client_p->whowas), temp);
+ struct Whowas *who = ptr->data;
+ who->online = NULL;
+ rb_dlinkDelete(&who->cnode, &client_p->whowas_clist);
}
}
-struct Client *get_history(const char *nick, time_t timelimit)
+struct Client *
+whowas_get_history(const char *nick, time_t timelimit)
{
- struct Whowas *temp;
- int blah;
+ struct whowas_top *wtop;
+ rb_dlink_node *ptr;
+
+ wtop = rb_radixtree_retrieve(whowas_tree, nick);
+ if(wtop == NULL)
+ return NULL;
timelimit = rb_current_time() - timelimit;
- blah = hash_whowas_name(nick);
- temp = WHOWASHASH[blah];
- for (; temp; temp = temp->next)
+
+ RB_DLINK_FOREACH_PREV(ptr, wtop->wwlist.tail)
{
- if(irccmp(nick, temp->name))
- continue;
- if(temp->logoff < timelimit)
- continue;
- return temp->online;
+ struct Whowas *who = ptr->data;
+ if(who->logoff >= timelimit)
+ {
+ return who->online;
+ }
}
+
return NULL;
}
-void count_whowas_memory(size_t * wwu, size_t * wwum)
+static void
+whowas_trim(void *unused)
{
- *wwu = NICKNAMEHISTORYLENGTH;
- *wwum = NICKNAMEHISTORYLENGTH * sizeof(struct Whowas);
-}
+ long over;
-void
-initwhowas()
-{
- int i;
+ if(rb_dlink_list_length(&whowas_list) < whowas_list_length)
+ return;
+ over = rb_dlink_list_length(&whowas_list) - whowas_list_length;
- for (i = 0; i < NICKNAMEHISTORYLENGTH; i++)
+ /* remove whowas entries over the configured length */
+ for(long i = 0; i < over; i++)
{
- memset((void *) &WHOWAS[i], 0, sizeof(struct Whowas));
- WHOWAS[i].hashv = -1;
+ if(whowas_list.tail != NULL && whowas_list.tail->data != NULL)
+ {
+ struct Whowas *twho = whowas_list.tail->data;
+ if(twho->online != NULL)
+ rb_dlinkDelete(&twho->cnode, &twho->online->whowas_clist);
+ rb_dlinkDelete(&twho->wnode, &twho->wtop->wwlist);
+ rb_dlinkDelete(&twho->whowas_node, &whowas_list);
+ whowas_free_wtop(twho->wtop);
+ rb_free(twho);
+ }
}
- for (i = 0; i < WW_MAX; i++)
- WHOWASHASH[i] = NULL;
-}
-
-
-static void
-add_whowas_to_clist(struct Whowas **bucket, struct Whowas *whowas)
-{
- whowas->cprev = NULL;
- if((whowas->cnext = *bucket) != NULL)
- whowas->cnext->cprev = whowas;
- *bucket = whowas;
}
-static void
-del_whowas_from_clist(struct Whowas **bucket, struct Whowas *whowas)
+void
+whowas_init(void)
{
- if(whowas->cprev)
- whowas->cprev->cnext = whowas->cnext;
- else
- *bucket = whowas->cnext;
- if(whowas->cnext)
- whowas->cnext->cprev = whowas->cprev;
+ whowas_tree = rb_radixtree_create("whowas", irccasecanon);
+ if(whowas_list_length == 0)
+ {
+ whowas_list_length = NICKNAMEHISTORYLENGTH;
+ }
+ rb_event_add("whowas_trim", whowas_trim, NULL, 10);
}
-static void
-add_whowas_to_list(struct Whowas **bucket, struct Whowas *whowas)
+void
+whowas_set_size(int len)
{
- whowas->prev = NULL;
- if((whowas->next = *bucket) != NULL)
- whowas->next->prev = whowas;
- *bucket = whowas;
+ whowas_list_length = len;
+ whowas_trim(NULL);
}
-static void
-del_whowas_from_list(struct Whowas **bucket, struct Whowas *whowas)
+void
+whowas_memory_usage(size_t * count, size_t * memused)
{
- if(whowas->prev)
- whowas->prev->next = whowas->next;
- else
- *bucket = whowas->next;
- if(whowas->next)
- whowas->next->prev = whowas->prev;
+ *count = rb_dlink_list_length(&whowas_list);
+ *memused += *count * sizeof(struct Whowas);
+ *memused += sizeof(struct whowas_top) * rb_radixtree_size(whowas_tree);
}
projects / solanum.git / blobdiff