void user_update_info(struct hub_user* u, struct adc_message* cmd)
{
char prefix[2];
char* argument;
size_t n = 0;
struct adc_message* cmd_new = adc_msg_copy(u->info);
if (!cmd_new)
{
/* FIXME: OOM! */
return;
}
/*
* FIXME: Optimization potential:
*
* remove parts of cmd that do not really change anything in cmd_new.
* this can save bandwidth if clients send multiple updates for information
* that does not really change anything.
*/
argument = adc_msg_get_argument(cmd, n++);
while (argument)
{
if (strlen(argument) >= 2)
{
prefix[0] = argument[0];
prefix[1] = argument[1];
adc_msg_replace_named_argument(cmd_new, prefix, argument+2);
}
hub_free(argument);
argument = adc_msg_get_argument(cmd, n++);
}
user_set_info(u, cmd_new);
adc_msg_free(cmd_new);
}
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);
}
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, 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);
char* message_decoded = NULL;
int ret = 0;
int relay = 1;
int broadcast;
int private_msg;
int command;
int offset;
if (!message)
return 0;
message_decoded = adc_msg_unescape(message);
if (!message_decoded)
{
hub_free(message);
return 0;
}
if (!user_is_logged_in(u))
{
hub_free(message);
return 0;
}
broadcast = (cmd->cache[0] == 'B');
private_msg = (cmd->cache[0] == 'D' || cmd->cache[0] == 'E');
command = (message[0] == '!' || message[0] == '+');
if (broadcast && command)
{
/*
* 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;
offset = adc_msg_get_arg_offset(cmd);
memmove(cmd->cache+offset+1, cmd->cache+offset+2, cmd->length - offset);
cmd->length--;
}
else
{
relay = command_invoke(hub->commands, u, message_decoded);
}
}
/* FIXME: Plugin should do this! */
if (relay && (((hub->config->chat_is_privileged && !user_is_protected(u)) || (user_flag_get(u, flag_muted))) && broadcast))
{
relay = 0;
}
if (relay)
{
plugin_st status = st_default;
if (broadcast)
{
status = plugin_handle_chat_message(hub, u, message_decoded, 0);
}
else if (private_msg)
{
struct hub_user* target = uman_get_user_by_sid(hub->users, cmd->target);
if (target)
status = plugin_handle_private_message(hub, u, target, message_decoded, 0);
else
relay = 0;
}
if (status == st_deny)
relay = 0;
}
if (relay)
{
/* adc_msg_remove_named_argument(cmd, "PM"); */
if (broadcast)
{
plugin_log_chat_message(hub, u, message_decoded, 0);
}
ret = route_message(hub, u, cmd);
}
hub_free(message);
hub_free(message_decoded);
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)
{
/* 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;
}
