void uman_send_quit_message(struct hub_info* hub, struct hub_user* leaving)
{
struct adc_message* command = adc_msg_construct(ADC_CMD_IQUI, 6);
adc_msg_add_argument(command, (const char*) sid_to_string(leaving->id.sid));
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);
adc_msg_free(command);
}
/*
* Set the expected credentials, and returns 1 if authentication is needed,
* or 0 if not.
* If the hub is configured to allow only registered users and the user
* is not recognized this will return 1.
*/
static int set_credentials(struct hub_info* hub, struct hub_user* user, struct adc_message* cmd)
{
int ret = 0;
struct auth_info* info = acl_get_access_info(hub, user->id.nick);
if (info)
{
user->credentials = info->credentials;
ret = 1;
}
else
{
user->credentials = auth_cred_guest;
}
hub_free(info);
switch (user->credentials)
{
case auth_cred_none:
break;
case auth_cred_bot:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_BOT);
break;
case auth_cred_guest:
/* Nothing to be added to the info message */
break;
case auth_cred_user:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_REGISTERED_USER);
break;
case auth_cred_operator:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_OPERATOR);
break;
case auth_cred_super:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_SUPER_USER);
break;
case auth_cred_admin:
adc_msg_add_argument(cmd, ADC_INF_FLAG_CLIENT_TYPE ADC_CLIENT_TYPE_ADMIN);
break;
case auth_cred_link:
break;
}
return ret;
}
void hub_set_variables(struct hub_info* hub, struct acl_handle* acl)
{
char* tmp;
char* server = adc_msg_escape(PRODUCT_STRING); /* FIXME: OOM */
hub->acl = acl;
hub->command_info = adc_msg_construct(ADC_CMD_IINF, 15);
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_PRODUCT, PRODUCT);
adc_msg_add_named_argument(hub->command_info, ADC_INF_FLAG_USER_AGENT_VERSION, GIT_VERSION);
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);
}
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, 100 + strlen(server));
if (hub->command_banner)
{
if (hub->config->show_banner_sys_info)
tmp = adc_msg_escape("Powered by " PRODUCT_STRING " on " OPSYS "/" CPUINFO);
else
tmp = adc_msg_escape("Powered by " PRODUCT_STRING);
adc_msg_add_argument(hub->command_banner, "000");
adc_msg_add_argument(hub->command_banner, tmp);
hub_free(tmp);
}
if (hub_plugins_load(hub) < 0)
{
LOG_FATAL("Unable to load plugins.");
hub->status = hub_status_shutdown;
}
else
hub->status = (hub->config->hub_enabled ? hub_status_running : hub_status_disabled);
hub_free(server);
}
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, u));
user_set_state(u, state_verify);
route_to_user(hub, u, igpa);
adc_msg_free(igpa);
}
void hub_send_flood_warning(struct hub_info* hub, struct hub_user* u, const char* message)
{
struct adc_message* msg;
char* tmp;
if (user_flag_get(u, flag_flood))
return;
msg = adc_msg_construct(ADC_CMD_ISTA, 128);
if (msg)
{
tmp = adc_msg_escape(message);
adc_msg_add_argument(msg, "110");
adc_msg_add_argument(msg, tmp);
hub_free(tmp);
route_to_user(hub, u, msg);
user_flag_set(u, flag_flood);
adc_msg_free(msg);
}
}
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);
}
}
/**
* @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);
struct adc_message* qui = adc_msg_construct(ADC_CMD_IQUI, 512);
char code[4];
char buf[256];
const char* text = 0;
const char* flag = 0;
char* escaped_text = 0;
int reconnect_time = 0;
int redirect = 0;
if (!cmd || !qui)
{
adc_msg_free(cmd);
adc_msg_free(qui);
return;
}
#define STATUS(CODE, MSG, FLAG, RCONTIME, REDIRECT) case status_ ## MSG : set_status_code(level, CODE, code); text = cfg->MSG; flag = FLAG; reconnect_time = RCONTIME; redirect = REDIRECT; break
switch (msg)
{
STATUS(11, msg_hub_full, 0, 600, 1); /* FIXME: Proper timeout? */
STATUS(12, msg_hub_disabled, 0, -1, 1);
STATUS(26, msg_hub_registered_users_only, 0, 0, 1);
STATUS(43, msg_inf_error_nick_missing, 0, 0, 0);
STATUS(43, msg_inf_error_nick_multiple, 0, 0, 0);
STATUS(21, msg_inf_error_nick_invalid, 0, 0, 0);
STATUS(21, msg_inf_error_nick_long, 0, 0, 0);
STATUS(21, msg_inf_error_nick_short, 0, 0, 0);
STATUS(21, msg_inf_error_nick_spaces, 0, 0, 0);
STATUS(21, msg_inf_error_nick_bad_chars, 0, 0, 0);
STATUS(21, msg_inf_error_nick_not_utf8, 0, 0, 0);
STATUS(22, msg_inf_error_nick_taken, 0, 0, 0);
STATUS(21, msg_inf_error_nick_restricted, 0, 0, 0);
STATUS(43, msg_inf_error_cid_invalid, "FBID", 0, 0);
STATUS(43, msg_inf_error_cid_missing, "FMID", 0, 0);
STATUS(24, msg_inf_error_cid_taken, 0, 0, 0);
STATUS(43, msg_inf_error_pid_missing, "FMPD", 0, 0);
STATUS(27, msg_inf_error_pid_invalid, "FBPD", 0, 0);
STATUS(31, msg_ban_permanently, 0, 0, 0);
STATUS(32, msg_ban_temporarily, "TL600", 600, 0); /* FIXME: Proper timeout? */
STATUS(23, msg_auth_invalid_password, 0, 0, 0);
STATUS(20, msg_auth_user_not_found, 0, 0, 0);
STATUS(30, msg_error_no_memory, 0, 0, 0);
STATUS(43, msg_user_share_size_low, "FB" ADC_INF_FLAG_SHARED_SIZE, 0, 1);
STATUS(43, msg_user_share_size_high, "FB" ADC_INF_FLAG_SHARED_SIZE, 0, 1);
STATUS(43, msg_user_slots_low, "FB" ADC_INF_FLAG_UPLOAD_SLOTS, 0, 1);
STATUS(43, msg_user_slots_high, "FB" ADC_INF_FLAG_UPLOAD_SLOTS, 0, 1);
STATUS(43, msg_user_hub_limit_low, 0, 0, 1);
STATUS(43, msg_user_hub_limit_high, 0, 0, 1);
STATUS(47, msg_proto_no_common_hash, 0, -1, 1);
STATUS(40, msg_proto_obsolete_adc0, 0, -1, 1);
}
#undef STATUS
escaped_text = adc_msg_escape(text);
adc_msg_add_argument(cmd, code);
adc_msg_add_argument(cmd, escaped_text);
if (flag)
{
adc_msg_add_argument(cmd, flag);
}
route_to_user(hub, user, cmd);
if (level >= status_level_fatal)
{
adc_msg_add_argument(qui, sid_to_string(user->id.sid));
snprintf(buf, 230, "MS%s", escaped_text);
adc_msg_add_argument(qui, buf);
if (reconnect_time != 0)
{
snprintf(buf, 10, "TL%d", reconnect_time);
adc_msg_add_argument(qui, buf);
}
if (redirect && *hub->config->redirect_addr)
{
snprintf(buf, 255, "RD%s", hub->config->redirect_addr);
adc_msg_add_argument(qui, buf);
}
route_to_user(hub, user, qui);
}
hub_free(escaped_text);
adc_msg_free(cmd);
adc_msg_free(qui);
}
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)
{
/* disconnect user. Do not send crap during initial handshake! */
hub_disconnect_user(hub, u, quit_logon_error);
return -1;
}
if (user_flag_get(u, feature_base))
{
/* User supports ADC/1.0 and a hash we know */
if (user_flag_get(u, feature_tiger))
{
hub_send_handshake(hub, u);
/* TODO: timeouts for mux users */
if (u->connection)
net_con_set_timeout(u->connection, TIMEOUT_HANDSHAKE);
}
else
{
// no common hash algorithm.
hub_send_status(hub, u, status_msg_proto_no_common_hash, status_level_fatal);
hub_disconnect_user(hub, u, quit_protocol_error);
}
}
else if (user_flag_get(u, feature_bas0))
{
if (hub->config->obsolete_clients)
{
hub_send_handshake(hub, u);
/* TODO: timeouts for mux users */
if (u->connection)
net_con_set_timeout(u->connection, TIMEOUT_HANDSHAKE);
}
else
{
/* disconnect user for using an obsolete client. */
char* tmp = adc_msg_escape(hub->config->msg_proto_obsolete_adc0);
struct adc_message* message = adc_msg_construct(ADC_CMD_IMSG, 6 + strlen(tmp));
adc_msg_add_argument(message, tmp);
hub_free(tmp);
route_to_user(hub, u, message);
adc_msg_free(message);
hub_disconnect_user(hub, u, quit_protocol_error);
}
}
else
{
/* Not speaking a compatible protocol - just disconnect. */
hub_disconnect_user(hub, u, quit_logon_error);
}
}
return ret;
}
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(PRODUCT_STRING); /* FIXME: OOM */
hub->acl = acl;
hub->command_info = adc_msg_construct(ADC_CMD_IINF, 15);
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_rules = 0;
fd = (hub->config->file_rules && *hub->config->file_rules) ? open(hub->config->file_rules, 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_rules = adc_msg_construct(ADC_CMD_IMSG, 6 + strlen(tmp));
adc_msg_add_argument(hub->command_rules, 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, 100 + strlen(server));
if (hub->command_banner)
{
if (hub->config->show_banner_sys_info)
tmp = adc_msg_escape("Powered by " PRODUCT_STRING " on " OPSYS "/" CPUINFO);
else
tmp = adc_msg_escape("Powered by " PRODUCT_STRING);
adc_msg_add_argument(hub->command_banner, "000");
adc_msg_add_argument(hub->command_banner, tmp);
hub_free(tmp);
}
#ifdef PLUGIN_SUPPORT
hub_plugins_load(hub);
#endif
hub->status = (hub->config->hub_enabled ? hub_status_running : hub_status_disabled);
hub_free(server);
}