273 lines
6.6 KiB
C
273 lines
6.6 KiB
C
/*
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* uhub - A tiny ADC p2p connection hub
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* Copyright (C) 2007-2009, Jan Vidar Krey
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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 3 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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "uhub.h"
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/*
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* This callback function is used to clear user objects from the userlist.
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* Should only be used in uman_shutdown().
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*/
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static void clear_user_list_callback(void* ptr)
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{
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if (ptr)
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{
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struct hub_user* u = (struct hub_user*) ptr;
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/* Mark the user as already being disconnected.
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* This prevents the hub from trying to send
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* quit messages to other users.
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*/
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u->credentials = cred_none;
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user_destroy(u);
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}
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}
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void uman_update_stats(struct hub_info* hub)
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{
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const int factor = TIMEOUT_STATS;
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struct net_statistics* total;
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struct net_statistics* intermediate;
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net_stats_get(&intermediate, &total);
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hub->stats.net_tx = (intermediate->tx / factor);
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hub->stats.net_rx = (intermediate->rx / factor);
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hub->stats.net_tx_peak = MAX(hub->stats.net_tx, hub->stats.net_tx_peak);
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hub->stats.net_rx_peak = MAX(hub->stats.net_rx, hub->stats.net_rx_peak);
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hub->stats.net_tx_total = total->tx;
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hub->stats.net_rx_total = total->rx;
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net_stats_reset();
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}
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void uman_print_stats(struct hub_info* hub)
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{
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LOG_INFO("Statistics users=" PRINTF_SIZE_T " (peak_users=" PRINTF_SIZE_T "), net_tx=%d KB/s, net_rx=%d KB/s (peak_tx=%d KB/s, peak_rx=%d KB/s)",
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hub->users->count,
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hub->users->count_peak,
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(int) hub->stats.net_tx / 1024,
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(int) hub->stats.net_rx / 1024,
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(int) hub->stats.net_tx_peak / 1024,
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(int) hub->stats.net_rx_peak / 1024);
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}
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static void timer_statistics(struct timeout_evt* t)
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{
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struct hub_info* hub = (struct hub_info*) t->ptr;
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uman_update_stats(hub);
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timeout_queue_reschedule(net_backend_get_timeout_queue(), hub->users->timeout, TIMEOUT_STATS);
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}
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int uman_init(struct hub_info* hub)
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{
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struct hub_user_manager* users = NULL;
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if (!hub)
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return -1;
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users = (struct hub_user_manager*) hub_malloc_zero(sizeof(struct hub_user_manager));
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if (!users)
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return -1;
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users->list = list_create();
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users->sids = sid_pool_create(net_get_max_sockets());
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if (!users->list)
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{
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list_destroy(users->list);
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hub_free(users);
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return -1;
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}
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if (net_backend_get_timeout_queue())
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{
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users->timeout = hub_malloc_zero(sizeof(struct timeout_evt));
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timeout_evt_initialize(users->timeout, timer_statistics, hub);
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timeout_queue_insert(net_backend_get_timeout_queue(), users->timeout, TIMEOUT_STATS);
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}
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hub->users = users;
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return 0;
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}
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int uman_shutdown(struct hub_info* hub)
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{
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if (!hub || !hub->users)
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return -1;
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if (net_backend_get_timeout_queue())
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{
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timeout_queue_remove(net_backend_get_timeout_queue(), hub->users->timeout);
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hub_free(hub->users->timeout);
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}
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if (hub->users->list)
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{
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list_clear(hub->users->list, &clear_user_list_callback);
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list_destroy(hub->users->list);
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}
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sid_pool_destroy(hub->users->sids);
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hub_free(hub->users);
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hub->users = 0;
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return 0;
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}
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int uman_add(struct hub_info* hub, struct hub_user* user)
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{
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if (!hub || !user)
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return -1;
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if (user->hub)
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return -1;
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list_append(hub->users->list, user);
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hub->users->count++;
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hub->users->count_peak = MAX(hub->users->count, hub->users->count_peak);
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hub->users->shared_size += user->limits.shared_size;
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hub->users->shared_files += user->limits.shared_files;
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user->hub = hub;
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return 0;
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}
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int uman_remove(struct hub_info* hub, struct hub_user* user)
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{
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if (!hub || !user)
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return -1;
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list_remove(hub->users->list, user);
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if (hub->users->count > 0)
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{
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hub->users->count--;
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}
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else
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{
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assert(!"negative count!");
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}
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hub->users->shared_size -= user->limits.shared_size;
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hub->users->shared_files -= user->limits.shared_files;
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user->hub = 0;
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return 0;
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}
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struct hub_user* uman_get_user_by_sid(struct hub_info* hub, sid_t sid)
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{
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return sid_lookup(hub->users->sids, sid);
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}
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struct hub_user* uman_get_user_by_cid(struct hub_info* hub, const char* cid)
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{
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struct hub_user* user = (struct hub_user*) list_get_first(hub->users->list); /* iterate users - only on incoming INF msg */
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while (user)
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{
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if (strcmp(user->id.cid, cid) == 0)
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return user;
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user = (struct hub_user*) list_get_next(hub->users->list);
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}
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return NULL;
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}
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struct hub_user* uman_get_user_by_nick(struct hub_info* hub, const char* nick)
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{
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struct hub_user* user = (struct hub_user*) list_get_first(hub->users->list); /* iterate users - only on incoming INF msg */
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while (user)
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{
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if (strcmp(user->id.nick, nick) == 0)
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return user;
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user = (struct hub_user*) list_get_next(hub->users->list);
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}
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return NULL;
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}
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size_t uman_get_user_by_addr(struct hub_info* hub, struct linked_list* users, struct ip_range* range)
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{
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size_t num = 0;
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struct hub_user* user = (struct hub_user*) list_get_first(hub->users->list); /* iterate users - only on incoming INF msg */
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while (user)
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{
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if (ip_in_range(&user->id.addr, range))
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{
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list_append(users, user);
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num++;
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}
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user = (struct hub_user*) list_get_next(hub->users->list);
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}
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return num;
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}
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int uman_send_user_list(struct hub_info* hub, struct hub_user* target)
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{
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int ret = 1;
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struct hub_user* user;
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user_flag_set(target, flag_user_list);
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user = (struct hub_user*) list_get_first(hub->users->list); /* iterate users - only on INF or PAS msg */
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while (user)
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{
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if (user_is_logged_in(user))
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{
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ret = route_to_user(hub, target, user->info);
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if (!ret)
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break;
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}
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user = (struct hub_user*) list_get_next(hub->users->list);
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}
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#if 0
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FIXME: FIXME FIXME handle send queue excess
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if (!target->send_queue_size)
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{
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user_flag_unset(target, flag_user_list);
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}
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#endif
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return ret;
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}
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void uman_send_quit_message(struct hub_info* hub, struct hub_user* leaving)
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{
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struct adc_message* command = adc_msg_construct(ADC_CMD_IQUI, 6);
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adc_msg_add_argument(command, (const char*) sid_to_string(leaving->id.sid));
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if (leaving->quit_reason == quit_banned || leaving->quit_reason == quit_kicked)
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{
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adc_msg_add_argument(command, ADC_QUI_FLAG_DISCONNECT);
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}
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route_to_all(hub, command);
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adc_msg_free(command);
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}
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sid_t uman_get_free_sid(struct hub_info* hub, struct hub_user* user)
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{
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sid_t sid = sid_alloc(hub->users->sids, user);
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user->id.sid = sid;
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return sid;
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}
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