uhub/src/core/usermanager.c

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/*
* uhub - A tiny ADC p2p connection hub
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* Copyright (C) 2007-2013, Jan Vidar Krey
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*
* 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "uhub.h"
/*
* This callback function is used to clear user objects from the userlist.
* Should only be used in uman_shutdown().
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*/
static void clear_user_list_callback(void* ptr)
{
if (ptr)
{
struct hub_user* u = (struct hub_user*) ptr;
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/* Mark the user as already being disconnected.
* This prevents the hub from trying to send
* quit messages to other users.
*/
u->credentials = auth_cred_none;
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user_destroy(u);
}
}
struct hub_user_manager* uman_init()
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{
struct hub_user_manager* users = (struct hub_user_manager*) hub_malloc_zero(sizeof(struct hub_user_manager));
if (!users)
return NULL;
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users->list = list_create();
users->sids = sid_pool_create(net_get_max_sockets());
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if (!users->list)
{
list_destroy(users->list);
hub_free(users);
return NULL;
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}
return users;
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}
int uman_shutdown(struct hub_user_manager* users)
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{
if (!users)
return -1;
if (users->list)
{
list_clear(users->list, &clear_user_list_callback);
list_destroy(users->list);
}
sid_pool_destroy(users->sids);
hub_free(users);
return 0;
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}
int uman_add(struct hub_user_manager* users, struct hub_user* user)
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{
if (!users || !user)
return -1;
list_append(users->list, user);
users->count++;
users->count_peak = MAX(users->count, users->count_peak);
users->shared_size += user->limits.shared_size;
users->shared_files += user->limits.shared_files;
return 0;
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}
int uman_remove(struct hub_user_manager* users, struct hub_user* user)
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{
if (!users || !user)
return -1;
list_remove(users->list, user);
if (users->count > 0)
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{
users->count--;
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}
else
{
uhub_assert(!"negative count!");
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}
users->shared_size -= user->limits.shared_size;
users->shared_files -= user->limits.shared_files;
return 0;
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}
struct hub_user* uman_get_user_by_sid(struct hub_user_manager* users, sid_t sid)
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{
return sid_lookup(users->sids, sid);
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}
struct hub_user* uman_get_user_by_cid(struct hub_user_manager* users, const char* cid)
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{
struct hub_user* user;
LIST_FOREACH(struct hub_user*, user, users->list,
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{
if (strcmp(user->id.cid, cid) == 0)
return user;
});
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return NULL;
}
struct hub_user* uman_get_user_by_nick(struct hub_user_manager* users, const char* nick)
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{
struct hub_user* user;
LIST_FOREACH(struct hub_user*, user, users->list,
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{
if (strcmp(user->id.nick, nick) == 0)
return user;
});
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return NULL;
}
size_t uman_get_user_by_addr(struct hub_user_manager* users, struct linked_list* target, struct ip_range* range)
{
size_t num = 0;
struct hub_user* user;
LIST_FOREACH(struct hub_user*, user, users->list,
{
if (ip_in_range(&user->id.addr, range))
{
list_append(target, user);
num++;
}
});
return num;
}
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int uman_send_user_list(struct hub_info* hub, struct hub_user_manager* users, struct hub_user* target)
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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);
LIST_FOREACH(struct hub_user*, user, users->list,
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{
if (user_is_logged_in(user))
{
ret = route_to_user(hub, target, user->info);
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if (!ret)
break;
}
});
#if 0
FIXME: FIXME FIXME handle send queue excess
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if (!target->send_queue_size)
{
user_flag_unset(target, flag_user_list);
}
#endif
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return ret;
}
void uman_send_quit_message(struct hub_info* hub, struct hub_user_manager* users, struct hub_user* leaving)
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{
struct adc_message* command = adc_msg_construct(ADC_CMD_IQUI, 6);
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)
{
adc_msg_add_argument(command, ADC_QUI_FLAG_DISCONNECT);
}
route_to_all(hub, command);
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adc_msg_free(command);
}
sid_t uman_get_free_sid(struct hub_user_manager* users, struct hub_user* user)
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{
sid_t sid = sid_alloc(users->sids, user);
user->id.sid = sid;
return sid;
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}