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uhub/src/core/hub.c

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/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2010, Jan Vidar Krey
*
* 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"
struct hub_info* g_hub = 0;
int hub_handle_message(struct hub_info* hub, struct hub_user* u, const char* line, size_t length)
{
int ret = 0;
struct adc_message* cmd = 0;
LOG_PROTO("recv %s: %s", sid_to_string(u->id.sid), line);
if (user_is_disconnecting(u))
return -1;
cmd = adc_msg_parse_verify(u, line, length);
if (cmd)
{
switch (cmd->cmd)
{
case ADC_CMD_HSUP: ret = hub_handle_support(hub, u, cmd); break;
case ADC_CMD_HPAS: ret = hub_handle_password(hub, u, cmd); break;
case ADC_CMD_BINF: ret = hub_handle_info(hub, u, cmd); break;
case ADC_CMD_DINF:
case ADC_CMD_EINF:
case ADC_CMD_FINF:
/* these must never be allowed for security reasons,
so we ignore them. */
break;
case ADC_CMD_EMSG:
case ADC_CMD_DMSG:
case ADC_CMD_BMSG:
case ADC_CMD_FMSG:
ret = hub_handle_chat_message(hub, u, cmd);
break;
case ADC_CMD_BSCH:
case ADC_CMD_DSCH:
case ADC_CMD_ESCH:
case ADC_CMD_FSCH:
case ADC_CMD_DRES:
case ADC_CMD_DRCM:
case ADC_CMD_DCTM:
cmd->priority = -1;
if (hub->config->chat_only && u->credentials < cred_operator)
{
/* These below aren't allowed in chat only hubs */
break;
}
default:
if (user_is_logged_in(u))
{
ret = route_message(hub, u, cmd);
}
else
{
ret = -1;
}
break;
}
adc_msg_free(cmd);
}
else
{
if (!user_is_logged_in(u))
{
ret = -1;
}
}
return ret;
}
int hub_handle_support(struct hub_info* hub, struct hub_user* u, struct adc_message* cmd)
{
int ret = 0;
int index = 0;
int ok = 1;
char* arg = adc_msg_get_argument(cmd, index);
if (hub->status == hub_status_disabled && u->state == state_protocol)
{
on_login_failure(hub, u, status_msg_hub_disabled);
hub_free(arg);
return -1;
}
while (arg)
{
if (strlen(arg) == 6)
{
fourcc_t fourcc = FOURCC(arg[2], arg[3], arg[4], arg[5]);
if (strncmp(arg, ADC_SUP_FLAG_ADD, 2) == 0)
{
user_support_add(u, fourcc);
}
else if (strncmp(arg, ADC_SUP_FLAG_REMOVE, 2) == 0)
{
user_support_remove(u, fourcc);
}
else
{
ok = 0;
}
}
else
{
ok = 0;
}
index++;
hub_free(arg);
arg = adc_msg_get_argument(cmd, index);
}
if (u->state == state_protocol)
{
if (index == 0) ok = 0; /* Need to support *SOMETHING*, at least BASE */
if (ok)
{
hub_send_handshake(hub, u);
net_con_set_timeout(u->connection, TIMEOUT_HANDSHAKE);
}
else
{
/* disconnect user. Do not send crap during initial handshake! */
hub_disconnect_user(hub, u, quit_logon_error);
ret = -1;
}
}
return ret;
}
int hub_handle_password(struct hub_info* hub, struct hub_user* u, struct adc_message* cmd)
{
char* password = adc_msg_get_argument(cmd, 0);
int ret = 0;
if (u->state == state_verify)
{
if (acl_password_verify(hub->acl, u, password))
{
on_login_success(hub, u);
}
else
{
on_login_failure(hub, u, status_msg_auth_invalid_password);
ret = -1;
}
}
hub_free(password);
return ret;
}
int hub_handle_chat_message(struct hub_info* hub, struct hub_user* u, struct adc_message* cmd)
{
char* message = adc_msg_get_argument(cmd, 0);
int ret = 0;
int relay = 1;
if (!message || !user_is_logged_in(u))
return 0;
if ((cmd->cache[0] == 'B') && (message[0] == '!' || message[0] == '+'))
{
/*
* A message such as "++message" is handled as "+message", by removing the first character.
* The first character is removed by memmoving the string one byte to the left.
*/
if (message[1] == message[0])
{
relay = 1;
int offset = adc_msg_get_arg_offset(cmd);
memmove(cmd->cache+offset+1, cmd->cache+offset+2, cmd->length - offset);
cmd->length--;
}
else
{
relay = command_dipatcher(hub, u, message);
}
}
if (hub->config->chat_is_privileged && !user_is_protected(u) && (cmd->cache[0] == 'B' || cmd->cache[0] == 'F'))
{
relay = 0;
}
if (relay)
{
/* adc_msg_remove_named_argument(cmd, "PM"); */
if (cmd->cache[0] == 'B')
hub_chat_history_add(hub, u, cmd);
ret = route_message(hub, u, cmd);
}
hub_free(message);
return ret;
}
void hub_chat_history_add(struct hub_info* hub, struct hub_user* user, struct adc_message* cmd)
{
char* msg_esc = adc_msg_get_argument(cmd, 0);
char* message = adc_msg_unescape(msg_esc);
char* log = hub_malloc(strlen(message) + strlen(user->id.nick) + 14);
sprintf(log, "%s <%s> %s\n", get_timestamp(time(NULL)), user->id.nick, message);
list_append(hub->chat_history, log);
while (list_size(hub->chat_history) > (size_t) hub->config->max_chat_history)
{
char* msg = list_get_first(hub->chat_history);
list_remove(hub->chat_history, msg);
hub_free(msg);
}
hub_free(message);
hub_free(msg_esc);
}
void hub_chat_history_clear(struct hub_info* hub)
{
list_clear(hub->chat_history, &hub_free);
}
void hub_send_support(struct hub_info* hub, struct hub_user* u)
{
if (user_is_connecting(u) || user_is_logged_in(u))
{
route_to_user(hub, u, hub->command_support);
}
}
void hub_send_sid(struct hub_info* hub, struct hub_user* u)
{
sid_t sid;
struct adc_message* command;
if (user_is_connecting(u))
{
command = adc_msg_construct(ADC_CMD_ISID, 10);
sid = uman_get_free_sid(hub, u);
adc_msg_add_argument(command, (const char*) sid_to_string(sid));
route_to_user(hub, u, command);
adc_msg_free(command);
}
}
void hub_send_ping(struct hub_info* hub, struct hub_user* user)
{
/* This will just send a newline, despite appearing to do more below. */
struct adc_message* ping = adc_msg_construct(0, 0);
ping->cache[0] = '\n';
ping->cache[1] = 0;
ping->length = 1;
ping->priority = 1;
route_to_user(hub, user, ping);
adc_msg_free(ping);
}
void hub_send_hubinfo(struct hub_info* hub, struct hub_user* u)
{
struct adc_message* info = adc_msg_copy(hub->command_info);
int value = 0;
if (user_flag_get(u, feature_ping))
{
/*
FIXME: These are missing:
HH - Hub Host address ( DNS or IP )
WS - Hub Website
NE - Hub Network
OW - Hub Owner name
*/
adc_msg_add_named_argument(info, "UC", uhub_itoa(hub_get_user_count(hub)));
adc_msg_add_named_argument(info, "MC", uhub_itoa(hub_get_max_user_count(hub)));
adc_msg_add_named_argument(info, "SS", uhub_ulltoa(hub_get_shared_size(hub)));
adc_msg_add_named_argument(info, "SF", uhub_itoa(hub_get_shared_files(hub)));
/* Maximum/minimum share size */
value = hub_get_max_share(hub);
if (value) adc_msg_add_named_argument(info, "XS", uhub_itoa(value));
value = hub_get_min_share(hub);
if (value) adc_msg_add_named_argument(info, "MS", uhub_itoa(value));
/* Maximum/minimum upload slots allowed per user */
value = hub_get_max_slots(hub);
if (value) adc_msg_add_named_argument(info, "XL", uhub_itoa(value));
value = hub_get_min_slots(hub);
if (value) adc_msg_add_named_argument(info, "ML", uhub_itoa(value));
/* guest users must be on min/max hubs */
value = hub_get_max_hubs_user(hub);
if (value) adc_msg_add_named_argument(info, "XU", uhub_itoa(value));
value = hub_get_min_hubs_user(hub);
if (value) adc_msg_add_named_argument(info, "MU", uhub_itoa(value));
/* registered users must be on min/max hubs */
value = hub_get_max_hubs_reg(hub);
if (value) adc_msg_add_named_argument(info, "XR", uhub_itoa(value));
value = hub_get_min_hubs_reg(hub);
if (value) adc_msg_add_named_argument(info, "MR", uhub_itoa(value));
/* operators must be on min/max hubs */
value = hub_get_max_hubs_op(hub);
if (value) adc_msg_add_named_argument(info, "XO", uhub_itoa(value));
value = hub_get_min_hubs_op(hub);
if (value) adc_msg_add_named_argument(info, "MO", uhub_itoa(value));
/* uptime in seconds */
adc_msg_add_named_argument(info, "UP", uhub_itoa((int) difftime(time(0), hub->tm_started)));
}
if (user_is_connecting(u) || user_is_logged_in(u))
{
route_to_user(hub, u, info);
}
adc_msg_free(info);
/* Only send banner when connecting */
if (hub->config->show_banner && user_is_connecting(u))
{
route_to_user(hub, u, hub->command_banner);
}
}
void hub_send_handshake(struct hub_info* hub, struct hub_user* u)
{
user_flag_set(u, flag_pipeline);
hub_send_support(hub, u);
hub_send_sid(hub, u);
hub_send_hubinfo(hub, u);
route_flush_pipeline(hub, u);
if (!user_is_disconnecting(u))
{
user_set_state(u, state_identify);
}
}
void hub_send_motd(struct hub_info* hub, struct hub_user* u)
{
if (hub->command_motd)
{
route_to_user(hub, u, hub->command_motd);
}
}
void hub_send_password_challenge(struct hub_info* hub, struct hub_user* u)
{
struct adc_message* igpa;
igpa = adc_msg_construct(ADC_CMD_IGPA, 38);
adc_msg_add_argument(igpa, acl_password_generate_challenge(hub->acl, u));
user_set_state(u, state_verify);
route_to_user(hub, u, igpa);
adc_msg_free(igpa);
}
static void hub_event_dispatcher(void* callback_data, struct event_data* message)
{
struct hub_info* hub = (struct hub_info*) callback_data;
struct hub_user* user = (struct hub_user*) message->ptr;
assert(hub != NULL);
switch (message->id)
{
case UHUB_EVENT_USER_JOIN:
{
if (user_is_disconnecting(user))
break;
if (message->flags)
{
hub_send_password_challenge(hub, user);
}
else
{
on_login_success(hub, user);
}
break;
}
case UHUB_EVENT_USER_QUIT:
{
uman_remove(hub, user);
uman_send_quit_message(hub, user);
on_logout_user(hub, user);
hub_schedule_destroy_user(hub, user);
break;
}
case UHUB_EVENT_USER_DESTROY:
{
user_destroy(user);
break;
}
case UHUB_EVENT_HUB_SHUTDOWN:
{
struct hub_user* u = (struct hub_user*) list_get_first(hub->users->list);
while (u)
{
uman_remove(hub, u);
user_destroy(u);
u = (struct hub_user*) list_get_first(hub->users->list);
}
break;
}
default:
/* FIXME: ignored */
break;
}
}
struct hub_info* hub_start_service(struct hub_config* config)
{
struct hub_info* hub = 0;
struct sockaddr_storage addr;
socklen_t sockaddr_size;
int server_tcp, ret, ipv6_supported, af;
char address_buf[INET6_ADDRSTRLEN+1];
hub = hub_malloc_zero(sizeof(struct hub_info));
if (!hub)
{
LOG_FATAL("Unable to allocate memory for hub");
return 0;
}
hub->tm_started = time(0);
ipv6_supported = net_is_ipv6_supported();
if (ipv6_supported)
LOG_DEBUG("IPv6 supported.");
else
LOG_DEBUG("IPv6 not supported.");
if (ip_convert_address(config->server_bind_addr, config->server_port, (struct sockaddr*) &addr, &sockaddr_size) == -1)
{
hub_free(hub);
return 0;
}
af = addr.ss_family;
if (af == AF_INET)
{
net_address_to_string(AF_INET, &((struct sockaddr_in*) &addr)->sin_addr, address_buf, INET6_ADDRSTRLEN);
}
else if (af == AF_INET6)
{
net_address_to_string(AF_INET6, &((struct sockaddr_in6*) &addr)->sin6_addr, address_buf, INET6_ADDRSTRLEN);
}
LOG_INFO("Starting " PRODUCT "/" VERSION ", listening on %s:%d...", address_buf, config->server_port);
server_tcp = net_socket_create(af, SOCK_STREAM, IPPROTO_TCP);
if (server_tcp == -1)
{
hub_free(hub);
return 0;
}
ret = net_set_reuseaddress(server_tcp, 1);
if (ret == -1)
{
hub_free(hub);
net_close(server_tcp);
return 0;
}
ret = net_set_nonblocking(server_tcp, 1);
if (ret == -1)
{
hub_free(hub);
net_close(server_tcp);
return 0;
}
ret = net_bind(server_tcp, (struct sockaddr*) &addr, sockaddr_size);
if (ret == -1)
{
LOG_FATAL("hub_start_service(): Unable to bind to TCP local address. errno=%d, str=%s", net_error(), net_error_string(net_error()));
hub_free(hub);
net_close(server_tcp);
return 0;
}
ret = net_listen(server_tcp, config->server_listen_backlog);
if (ret == -1)
{
LOG_FATAL("hub_start_service(): Unable to listen to socket");
hub_free(hub);
net_close(server_tcp);
return 0;
}
#ifdef SSL_SUPPORT
if (config->tls_enable)
{
hub->ssl_method = SSLv23_method(); /* TLSv1_method() */
hub->ssl_ctx = SSL_CTX_new(hub->ssl_method);
/* Disable SSLv2 */
SSL_CTX_set_options(hub->ssl_ctx, SSL_OP_NO_SSLv2);
if (SSL_CTX_use_certificate_file(hub->ssl_ctx, config->tls_certificate, SSL_FILETYPE_PEM) < 0)
{
LOG_ERROR("SSL_CTX_use_certificate_file: %s", ERR_error_string(ERR_get_error(), NULL));
}
if (SSL_CTX_use_PrivateKey_file(hub->ssl_ctx, config->tls_private_key, SSL_FILETYPE_PEM) < 0)
{
LOG_ERROR("SSL_CTX_use_PrivateKey_file: %s", ERR_error_string(ERR_get_error(), NULL));
}
if (SSL_CTX_check_private_key(hub->ssl_ctx) != 1)
{
LOG_FATAL("SSL_CTX_check_private_key: Private key does not match the certificate public key: %s", ERR_error_string(ERR_get_error(), NULL));
return 0;
}
LOG_INFO("Enabling TLS, using certificate: %s, private key: %s", config->tls_certificate, config->tls_private_key);
}
#endif
hub->config = config;
hub->users = NULL;
if (uman_init(hub) == -1)
{
hub_free(hub);
net_close(server_tcp);
return 0;
}
if (event_queue_initialize(&hub->queue, hub_event_dispatcher, (void*) hub) == -1)
{
uman_shutdown(hub);
hub_free(hub);
net_close(server_tcp);
return 0;
}
hub->recvbuf = hub_malloc(MAX_RECV_BUF);
hub->sendbuf = hub_malloc(MAX_SEND_BUF);
if (!hub->recvbuf || !hub->sendbuf)
{
hub_free(hub->recvbuf);
hub_free(hub->sendbuf);
uman_shutdown(hub);
hub_free(hub);
net_close(server_tcp);
return 0;
}
hub->chat_history = (struct linked_list*) list_create();
hub->logout_info = (struct linked_list*) list_create();
if (!hub->chat_history)
{
list_destroy(hub->chat_history);
list_destroy(hub->logout_info);
hub_free(hub->recvbuf);
hub_free(hub->sendbuf);
uman_shutdown(hub);
hub_free(hub);
net_close(server_tcp);
return 0;
}
hub->status = hub_status_running;
hub->server = net_con_create();
net_con_initialize(hub->server, server_tcp, net_on_accept, hub, NET_EVENT_READ);
g_hub = hub;
return hub;
}
void hub_shutdown_service(struct hub_info* hub)
{
LOG_DEBUG("hub_shutdown_service()");
event_queue_shutdown(hub->queue);
#ifdef USE_LIBEVENT
event_del(&hub->ev_accept);
#endif
net_con_close(hub->server);
hub_free(hub->server);
uman_shutdown(hub);
hub->status = hub_status_stopped;
hub_free(hub->sendbuf);
hub_free(hub->recvbuf);
hub_chat_history_clear(hub);
list_destroy(hub->chat_history);
list_clear(hub->logout_info, &hub_free);
list_destroy(hub->logout_info);
hub_free(hub);
hub = 0;
g_hub = 0;
}
#define SERVER "" PRODUCT "/" VERSION ""
void hub_set_variables(struct hub_info* hub, struct acl_handle* acl)
{
int fd, ret;
char buf[MAX_RECV_BUF];
char* tmp;
char* server = adc_msg_escape(SERVER); /* FIXME: OOM */
hub->acl = acl;
hub->command_info = adc_msg_construct(ADC_CMD_IINF, 15 + strlen(server));
if (hub->command_info)
{
adc_msg_add_named_argument(hub->command_info, ADC_INF_FLAG_CLIENT_TYPE, ADC_CLIENT_TYPE_HUB);
adc_msg_add_named_argument(hub->command_info, ADC_INF_FLAG_USER_AGENT, server);
tmp = adc_msg_escape(hub->config->hub_name);
adc_msg_add_named_argument(hub->command_info, ADC_INF_FLAG_NICK, tmp);
hub_free(tmp);
tmp = adc_msg_escape(hub->config->hub_description);
adc_msg_add_named_argument(hub->command_info, ADC_INF_FLAG_DESCRIPTION, tmp);
hub_free(tmp);
}
/* (Re-)read the message of the day */
hub->command_motd = 0;
fd = (hub->config->file_motd && *hub->config->file_motd) ? open(hub->config->file_motd, 0) : -1;
if (fd != -1)
{
ret = read(fd, buf, MAX_RECV_BUF);
if (ret > 0)
{
buf[ret] = 0;
tmp = adc_msg_escape(buf);
hub->command_motd = adc_msg_construct(ADC_CMD_IMSG, 6 + strlen(tmp));
adc_msg_add_argument(hub->command_motd, tmp);
hub_free(tmp);
}
close(fd);
}
hub->command_support = adc_msg_construct(ADC_CMD_ISUP, 6 + strlen(ADC_PROTO_SUPPORT));
if (hub->command_support)
{
adc_msg_add_argument(hub->command_support, ADC_PROTO_SUPPORT);
}
hub->command_banner = adc_msg_construct(ADC_CMD_ISTA, 25 + strlen(server));
if (hub->command_banner)
{
tmp = adc_msg_escape("Powered by " SERVER);
adc_msg_add_argument(hub->command_banner, "000");
adc_msg_add_argument(hub->command_banner, tmp);
hub_free(tmp);
}
hub->status = (hub->config->hub_enabled ? hub_status_running : hub_status_disabled);
hub_free(server);
}
void hub_free_variables(struct hub_info* hub)
{
adc_msg_free(hub->command_info);
adc_msg_free(hub->command_banner);
if (hub->command_motd)
adc_msg_free(hub->command_motd);
adc_msg_free(hub->command_support);
}
/**
* @return 1 if nickname is in use, or 0 if not used.
*/
static inline int is_nick_in_use(struct hub_info* hub, const char* nick)
{
struct hub_user* lookup = uman_get_user_by_nick(hub, nick);
if (lookup)
{
return 1;
}
return 0;
}
/**
* @return 1 if CID is in use, or 0 if not used.
*/
static inline int is_cid_in_use(struct hub_info* hub, const char* cid)
{
struct hub_user* lookup = uman_get_user_by_cid(hub, cid);
if (lookup)
{
return 1;
}
return 0;
}
static void set_status_code(enum msg_status_level level, int code, char buffer[4])
{
buffer[0] = ('0' + (int) level);
buffer[1] = ('0' + (code / 10));
buffer[2] = ('0' + (code % 10));
buffer[3] = 0;
}
/**
* @param hub The hub instance this message is sent from.
* @param user The user this message is sent to.
* @param msg See enum status_message
* @param level See enum status_level
*/
void hub_send_status(struct hub_info* hub, struct hub_user* user, enum status_message msg, enum msg_status_level level)
{
struct hub_config* cfg = hub->config;
struct adc_message* cmd = adc_msg_construct(ADC_CMD_ISTA, 6);
if (!cmd) return;
char code[4];
const char* text = 0;
const char* flag = 0;
char* escaped_text = 0;
#define STATUS(CODE, MSG, FLAG) case status_ ## MSG : set_status_code(level, CODE, code); text = cfg->MSG; flag = FLAG; break
switch (msg)
{
STATUS(11, msg_hub_full, 0);
STATUS(12, msg_hub_disabled, 0);
STATUS(26, msg_hub_registered_users_only, 0);
STATUS(43, msg_inf_error_nick_missing, 0);
STATUS(43, msg_inf_error_nick_multiple, 0);
STATUS(21, msg_inf_error_nick_invalid, 0);
STATUS(21, msg_inf_error_nick_long, 0);
STATUS(21, msg_inf_error_nick_short, 0);
STATUS(21, msg_inf_error_nick_spaces, 0);
STATUS(21, msg_inf_error_nick_bad_chars, 0);
STATUS(21, msg_inf_error_nick_not_utf8, 0);
STATUS(22, msg_inf_error_nick_taken, 0);
STATUS(21, msg_inf_error_nick_restricted, 0);
STATUS(43, msg_inf_error_cid_invalid, "FBID");
STATUS(43, msg_inf_error_cid_missing, "FMID");
STATUS(24, msg_inf_error_cid_taken, 0);
STATUS(43, msg_inf_error_pid_missing, "FMPD");
STATUS(27, msg_inf_error_pid_invalid, "FBPD");
STATUS(31, msg_ban_permanently, 0);
STATUS(32, msg_ban_temporarily, "TL600"); /* FIXME: Use a proper timeout */
STATUS(23, msg_auth_invalid_password, 0);
STATUS(20, msg_auth_user_not_found, 0);
STATUS(30, msg_error_no_memory, 0);
STATUS(43, msg_user_share_size_low, "FB" ADC_INF_FLAG_SHARED_SIZE);
STATUS(43, msg_user_share_size_high, "FB" ADC_INF_FLAG_SHARED_SIZE);
STATUS(43, msg_user_slots_low, "FB" ADC_INF_FLAG_UPLOAD_SLOTS);
STATUS(43, msg_user_slots_high, "FB" ADC_INF_FLAG_UPLOAD_SLOTS);
STATUS(43, msg_user_hub_limit_low, 0);
STATUS(43, msg_user_hub_limit_high, 0);
}
#undef STATUS
escaped_text = adc_msg_escape(text);
adc_msg_add_argument(cmd, code);
adc_msg_add_argument(cmd, escaped_text);
hub_free(escaped_text);
if (flag)
{
adc_msg_add_argument(cmd, flag);
}
route_to_user(hub, user, cmd);
adc_msg_free(cmd);
}
const char* hub_get_status_message(struct hub_info* hub, enum status_message msg)
{
#define STATUS(MSG) case status_ ## MSG : return cfg->MSG; break
struct hub_config* cfg = hub->config;
switch (msg)
{
STATUS(msg_hub_full);
STATUS(msg_hub_disabled);
STATUS(msg_hub_registered_users_only);
STATUS(msg_inf_error_nick_missing);
STATUS(msg_inf_error_nick_multiple);
STATUS(msg_inf_error_nick_invalid);
STATUS(msg_inf_error_nick_long);
STATUS(msg_inf_error_nick_short);
STATUS(msg_inf_error_nick_spaces);
STATUS(msg_inf_error_nick_bad_chars);
STATUS(msg_inf_error_nick_not_utf8);
STATUS(msg_inf_error_nick_taken);
STATUS(msg_inf_error_nick_restricted);
STATUS(msg_inf_error_cid_invalid);
STATUS(msg_inf_error_cid_missing);
STATUS(msg_inf_error_cid_taken);
STATUS(msg_inf_error_pid_missing);
STATUS(msg_inf_error_pid_invalid);
STATUS(msg_ban_permanently);
STATUS(msg_ban_temporarily);
STATUS(msg_auth_invalid_password);
STATUS(msg_auth_user_not_found);
STATUS(msg_error_no_memory);
STATUS(msg_user_share_size_low);
STATUS(msg_user_share_size_high);
STATUS(msg_user_slots_low);
STATUS(msg_user_slots_high);
STATUS(msg_user_hub_limit_low);
STATUS(msg_user_hub_limit_high);
}
#undef STATUS
return "Unknown";
}
const char* hub_get_status_message_log(struct hub_info* hub, enum status_message msg)
{
#define STATUS(MSG) case status_ ## MSG : return #MSG; break
switch (msg)
{
STATUS(msg_hub_full);
STATUS(msg_hub_disabled);
STATUS(msg_hub_registered_users_only);
STATUS(msg_inf_error_nick_missing);
STATUS(msg_inf_error_nick_multiple);
STATUS(msg_inf_error_nick_invalid);
STATUS(msg_inf_error_nick_long);
STATUS(msg_inf_error_nick_short);
STATUS(msg_inf_error_nick_spaces);
STATUS(msg_inf_error_nick_bad_chars);
STATUS(msg_inf_error_nick_not_utf8);
STATUS(msg_inf_error_nick_taken);
STATUS(msg_inf_error_nick_restricted);
STATUS(msg_inf_error_cid_invalid);
STATUS(msg_inf_error_cid_missing);
STATUS(msg_inf_error_cid_taken);
STATUS(msg_inf_error_pid_missing);
STATUS(msg_inf_error_pid_invalid);
STATUS(msg_ban_permanently);
STATUS(msg_ban_temporarily);
STATUS(msg_auth_invalid_password);
STATUS(msg_auth_user_not_found);
STATUS(msg_error_no_memory);
STATUS(msg_user_share_size_low);
STATUS(msg_user_share_size_high);
STATUS(msg_user_slots_low);
STATUS(msg_user_slots_high);
STATUS(msg_user_hub_limit_low);
STATUS(msg_user_hub_limit_high);
}
#undef STATUS
return "unknown";
}
size_t hub_get_user_count(struct hub_info* hub)
{
return hub->users->count;
}
size_t hub_get_max_user_count(struct hub_info* hub)
{
return hub->config->max_users;
}
uint64_t hub_get_shared_size(struct hub_info* hub)
{
return hub->users->shared_size;
}
uint64_t hub_get_shared_files(struct hub_info* hub)
{
return hub->users->shared_files;
}
uint64_t hub_get_min_share(struct hub_info* hub)
{
return 1024 * 1024 * hub->config->limit_min_share;
}
uint64_t hub_get_max_share(struct hub_info* hub)
{
return 1024 * 1024 * hub->config->limit_max_share;
}
size_t hub_get_min_slots(struct hub_info* hub)
{
return hub->config->limit_min_slots;
}
size_t hub_get_max_slots(struct hub_info* hub)
{
return hub->config->limit_max_slots;
}
size_t hub_get_max_hubs_total(struct hub_info* hub)
{
return hub->config->limit_max_hubs;
}
size_t hub_get_max_hubs_user(struct hub_info* hub)
{
return hub->config->limit_max_hubs_user;
}
size_t hub_get_min_hubs_user(struct hub_info* hub)
{
return hub->config->limit_min_hubs_user;
}
size_t hub_get_max_hubs_reg(struct hub_info* hub)
{
return hub->config->limit_max_hubs_reg;
}
size_t hub_get_min_hubs_reg(struct hub_info* hub)
{
return hub->config->limit_min_hubs_reg;
}
size_t hub_get_max_hubs_op(struct hub_info* hub)
{
return hub->config->limit_max_hubs_op;
}
size_t hub_get_min_hubs_op(struct hub_info* hub)
{
return hub->config->limit_min_hubs_op;
}
void hub_schedule_destroy_user(struct hub_info* hub, struct hub_user* user)
{
struct event_data post;
memset(&post, 0, sizeof(post));
post.id = UHUB_EVENT_USER_DESTROY;
post.ptr = user;
event_queue_post(hub->queue, &post);
if (user->id.sid)
{
sid_free(hub->users->sids, user->id.sid);
}
}
void hub_disconnect_all(struct hub_info* hub)
{
struct event_data post;
memset(&post, 0, sizeof(post));
post.id = UHUB_EVENT_HUB_SHUTDOWN;
post.ptr = 0;
event_queue_post(hub->queue, &post);
}
void hub_event_loop(struct hub_info* hub)
{
do
{
net_backend_process();
event_queue_process(hub->queue);
}
while (hub->status == hub_status_running || hub->status == hub_status_disabled);
if (hub->status == hub_status_shutdown)
{
LOG_DEBUG("Removing all users...");
event_queue_process(hub->queue);
event_queue_process(hub->queue);
hub_disconnect_all(hub);
event_queue_process(hub->queue);
hub->status = hub_status_stopped;
}
}
void hub_disconnect_user(struct hub_info* hub, struct hub_user* user, int reason)
{
struct event_data post;
int need_notify = 0;
/* is user already being disconnected ? */
if (user_is_disconnecting(user))
{
return;
}
/* stop reading from user */
net_shutdown_r(net_con_get_sd(user->connection));
net_con_close(user->connection);
user->connection = 0;
LOG_TRACE("hub_disconnect_user(), user=%p, reason=%d, state=%d", user, reason, user->state);
need_notify = user_is_logged_in(user) && hub->status == hub_status_running;
user->quit_reason = reason;
user_set_state(user, state_cleanup);
if (need_notify)
{
memset(&post, 0, sizeof(post));
post.id = UHUB_EVENT_USER_QUIT;
post.ptr = user;
event_queue_post(hub->queue, &post);
}
else
{
hub_schedule_destroy_user(hub, user);
}
}
void hub_logout_log(struct hub_info* hub, struct hub_user* user)
{
struct hub_logout_info* loginfo = hub_malloc_zero(sizeof(struct hub_logout_info));
if (!loginfo) return;
loginfo->time = time(NULL);
strcpy(loginfo->cid, user->id.cid);
strcpy(loginfo->nick, user->id.nick);
memcpy(&loginfo->addr, &user->id.addr, sizeof(struct ip_addr_encap));
loginfo->reason = user->quit_reason;
list_append(hub->logout_info, loginfo);
while (list_size(hub->logout_info) > (size_t) hub->config->max_logout_log)
{
struct hub_logout_info* entry = list_get_first(hub->logout_info);
list_remove(hub->logout_info, entry);
hub_free(entry);
}
}
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