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michael |
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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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michael |
9857 |
* Copyright (c) 1997-2021 ircd-hybrid development team |
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michael |
9265 |
* |
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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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/*! \file channel_invite.c |
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* \brief Channel invitation related functions |
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michael |
9271 |
* \version $Id$ |
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michael |
9265 |
*/ |
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#include "stdinc.h" |
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#include "memory.h" |
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#include "list.h" |
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#include "event.h" |
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#include "channel.h" |
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#include "channel_invite.h" |
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#include "conf.h" |
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michael |
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/*! \brief Checks whether a client is invited to a certain channel. While walking the |
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* shortest invitation list, expired invitations are vaccumed automatically. |
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* \param channel Pointer to channel block |
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* \param client Pointer to client |
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* \return A struct Invite pointer or NULL |
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*/ |
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michael |
9265 |
struct Invite * |
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invite_find(struct Channel *channel, struct Client *client) |
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{ |
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dlink_node *node, *node_next; |
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dlink_list *list; |
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/* Take the shortest of the two lists */ |
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if (dlink_list_length(&client->connection->invited) < dlink_list_length(&channel->invites)) |
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list = &client->connection->invited; |
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else |
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list = &channel->invites; |
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DLINK_FOREACH_SAFE(node, node_next, list->head) |
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{ |
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struct Invite *invite = node->data; |
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if (ConfigChannel.invite_expire_time && |
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ConfigChannel.invite_expire_time + invite->when < event_base->time.sec_monotonic) |
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invite_del(invite); |
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else if (invite->channel == channel && invite->client == client) |
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return invite; |
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} |
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return NULL; |
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} |
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/*! \brief Adds client to invite list |
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* \param channel Pointer to channel block |
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* \param client Pointer to client to add invite to |
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*/ |
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void |
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invite_add(struct Channel *channel, struct Client *client) |
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{ |
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struct Invite *invite = invite_find(channel, client); |
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if (invite) |
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invite_del(invite); |
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invite = xcalloc(sizeof(*invite)); |
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invite->client = client; |
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invite->channel = channel; |
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invite->when = event_base->time.sec_monotonic; |
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/* Delete last link in chain if the list is max length */ |
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while (dlink_list_length(&client->connection->invited) && |
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dlink_list_length(&client->connection->invited) >= ConfigChannel.max_invites) |
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invite_del(client->connection->invited.tail->data); |
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/* Add client to channel invite list */ |
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dlinkAdd(invite, &invite->chan_node, &channel->invites); |
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/* Add channel to the end of the client invite list */ |
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dlinkAdd(invite, &invite->user_node, &client->connection->invited); |
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} |
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/*! \brief Delete Invite block from channel invite list |
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* and client invite list |
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* \param invite Pointer to Invite struct |
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*/ |
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void |
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invite_del(struct Invite *invite) |
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{ |
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dlinkDelete(&invite->user_node, &invite->client->connection->invited); |
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dlinkDelete(&invite->chan_node, &invite->channel->invites); |
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/* Release memory pointed to by 'invite' */ |
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xfree(invite); |
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} |
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/*! \brief Removes and frees all Invite blocks from a list |
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* \param list Pointer to a dlink_list |
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*/ |
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void |
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invite_clear_list(dlink_list *list) |
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{ |
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while (list->head) |
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invite_del(list->head->data); |
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} |
