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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 1997-2016 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file whowas.c |
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* \brief WHOWAS user cache. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "list.h" |
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#include "whowas.h" |
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#include "client.h" |
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#include "hash.h" |
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#include "irc_string.h" |
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#include "ircd.h" |
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|
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|
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static struct Whowas WHOWAS[NICKNAMEHISTORYLENGTH]; |
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dlink_list WHOWASHASH[HASHSIZE]; |
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|
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|
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/*! \brief Initializes whowas table |
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*/ |
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void |
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whowas_init(void) |
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{ |
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for (unsigned int i = 0; i < NICKNAMEHISTORYLENGTH; ++i) |
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WHOWAS[i].hashv = -1; |
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} |
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|
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/*! \brief Adds the currently defined name of the client to history. |
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* Usually called before changing to a new name (nick). |
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* Client must be a fully registered user. |
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* \param client_p pointer to Client struct to add |
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* \param online either 1 if it's a nick change or 0 on client exit |
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*/ |
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void |
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whowas_add_history(struct Client *client_p, const int online) |
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{ |
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static unsigned int whowas_next = 0; |
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struct Whowas *const whowas = &WHOWAS[whowas_next]; |
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|
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assert(IsClient(client_p)); |
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|
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if (++whowas_next == NICKNAMEHISTORYLENGTH) |
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whowas_next = 0; |
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|
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if (whowas->hashv != -1) |
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{ |
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if (whowas->online) |
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dlinkDelete(&whowas->cnode, &whowas->online->whowas); |
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|
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dlinkDelete(&whowas->tnode, &WHOWASHASH[whowas->hashv]); |
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} |
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|
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whowas->hashv = strhash(client_p->name); |
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whowas->shide = IsHidden(client_p->servptr) != 0; |
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whowas->logoff = CurrentTime; |
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|
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strlcpy(whowas->account, client_p->account, sizeof(whowas->account)); |
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strlcpy(whowas->name, client_p->name, sizeof(whowas->name)); |
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strlcpy(whowas->username, client_p->username, sizeof(whowas->username)); |
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strlcpy(whowas->hostname, client_p->host, sizeof(whowas->hostname)); |
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strlcpy(whowas->sockhost, client_p->sockhost, sizeof(whowas->sockhost)); |
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strlcpy(whowas->realname, client_p->info, sizeof(whowas->realname)); |
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strlcpy(whowas->servername, client_p->servptr->name, sizeof(whowas->servername)); |
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|
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if (online) |
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{ |
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whowas->online = client_p; |
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dlinkAdd(whowas, &whowas->cnode, &client_p->whowas); |
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} |
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else |
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whowas->online = NULL; |
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|
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dlinkAdd(whowas, &whowas->tnode, &WHOWASHASH[whowas->hashv]); |
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} |
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|
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/*! \brief This must be called when the client structure is about to |
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* be released. History mechanism keeps pointers to client |
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* structures and it must know when they cease to exist. |
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* \param client_p pointer to Client struct |
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*/ |
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void |
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whowas_off_history(struct Client *client_p) |
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{ |
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while (client_p->whowas.head) |
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{ |
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struct Whowas *whowas = client_p->whowas.head->data; |
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|
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whowas->online = NULL; |
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dlinkDelete(&whowas->cnode, &client_p->whowas); |
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} |
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} |
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|
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/*! \brief Returns the current client that was using the given |
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* nickname within the timelimit. Returns NULL, if no |
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* one found... |
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* \param nick name of the nick |
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* \param timelimit maximum age for a client since log-off |
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*/ |
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struct Client * |
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whowas_get_history(const char *nick, uintmax_t timelimit) |
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{ |
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dlink_node *node = NULL; |
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|
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timelimit = CurrentTime - timelimit; |
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|
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DLINK_FOREACH(node, WHOWASHASH[strhash(nick)].head) |
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{ |
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struct Whowas *whowas = node->data; |
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|
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if (whowas->logoff < timelimit) |
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continue; |
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if (irccmp(nick, whowas->name)) |
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continue; |
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return whowas->online; |
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} |
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|
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return NULL; |
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} |
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|
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/*! \brief For debugging. Counts related structures stored in whowas array |
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*/ |
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void |
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whowas_count_memory(unsigned int *const count, size_t *const bytes) |
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{ |
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const struct Whowas *whowas = &WHOWAS[0]; |
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|
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for (unsigned int i = 0; i < NICKNAMEHISTORYLENGTH; ++i, ++whowas) |
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{ |
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if (whowas->hashv != -1) |
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{ |
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(*count)++; |
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(*bytes) += sizeof(struct Whowas); |
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} |
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} |
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} |
