void *htxd_command_thraead_handler(void *ptr_socket)
{
char * command_buffer = NULL;
htxd_command command_object;
int command_return_code = 0;
int client_socket;
char * command_result = NULL;
char trace_string[256];
int result = 0;
client_socket = *( (int *)ptr_socket);
free(ptr_socket);
/* receive the incoming command */
HTXD_TRACE(LOG_OFF, "daemon receiving command");
command_buffer = htxd_receive_command(client_socket);
if(command_buffer == NULL)
{
sprintf(trace_string, "Error : htxd_receive_command: returned NULL");
HTXD_TRACE(LOG_ON, trace_string);
return NULL;
}
HTXD_TRACE(LOG_OFF, "command received start<<");
HTXD_TRACE(LOG_OFF, command_buffer);
HTXD_TRACE(LOG_OFF, ">> command received end");
if(htxd_verify_command_buffer_format(command_buffer) != 0) {
HTXD_TRACE(LOG_ON, "htxd_start_daemon: htxd_verify_command_buffer_format failed for the command buffer");
HTXD_TRACE(LOG_ON, "further processing of the command will be ignored");
sprintf(trace_string, "Error while receiving command, errno <%d>", errno);
result = htxd_send_response(client_socket, trace_string, 1, -1);
if(result == -1) {
HTXD_TRACE(LOG_ON, "1. htxd_send_response() is returned -1, ignoring further processing of the command");
}
HTXD_TRACE(LOG_ON, trace_string);
close(client_socket);
if(command_buffer != NULL) {
free(command_buffer);
command_buffer = NULL;
}
return NULL;
}
htxd_update_command_object(command_buffer, &command_object);
if(command_buffer != NULL) {
free(command_buffer);
command_buffer = NULL;
}
/* process the received command */
HTXD_TRACE(LOG_OFF, "daemon start processing command");
command_return_code = htxd_process_command(&command_result, &command_object);
/* handling if command did not generate result buffer */
if(command_result == NULL) {
command_result = malloc(HTX_ERR_MESSAGE_LENGTH);
if(command_result == NULL) {
sprintf(trace_string, "Error : malloc(%d) failed with errno = <%d> while allocating error message", HTX_ERR_MESSAGE_LENGTH, errno);
HTXD_TRACE(LOG_ON, trace_string);
exit(1);
}
strcpy(command_result, "No result is generated by the command");
}
HTXD_TRACE(LOG_OFF, "command result start<<");
HTXD_TRACE(LOG_OFF, command_result);
HTXD_TRACE(LOG_OFF, ">> command result end");
/* send back command result to client */
HTXD_TRACE(LOG_OFF, "daemon sending the result to client");
result = htxd_send_response(client_socket, command_result, command_object.command_type, command_return_code);
if(result == -1)
{
sprintf(trace_string, "Error : htxd_send_response returned with -1");
HTXD_TRACE(LOG_ON, trace_string);
return NULL;
}
if(command_result != 0) {
free(command_result);
}
close(client_socket);
htxd_exit_command_thread();
return NULL;
}
/* daemon live here, receives command, process it, send back result */
int htxd_start_daemon(htxd *htxd_instance)
{
int result = 0;
int socket_fd;
struct sockaddr_in local_address;
struct sockaddr_in client_address;
socklen_t address_length;
int new_fd;
char * command_buffer = NULL;
char * command_result = NULL;
int command_return_code = 0;
char trace_string[256];
HTXD_FUNCTION_TRACE(FUN_ENTRY, "htxd_start_daemon");
init_option_list();
htxd_autostart(htxd_instance); /* try autostart if find the autostart flag file */
socket_fd = htxd_create_socket();
result = htxd_set_socket_option(socket_fd);
local_address.sin_family = AF_INET;
local_address.sin_port = htons (htxd_instance->port_number);
local_address.sin_addr.s_addr = INADDR_ANY;
memset (&(local_address.sin_zero), '\0', 8);
result = htxd_bind_socket(socket_fd, &local_address, htxd_instance->port_number);
result = htxd_listen_socket(socket_fd);
HTXD_TRACE(LOG_ON, "starting daemon main loop");
do /* this loop make the daemon live */
{
do /* this loop listens for incomming messages */
{
HTXD_TRACE(LOG_OFF, "daemon wating for command");
result = htxd_select(socket_fd);
if(htxd_shutdown_flag == TRUE) {
break;
}
}while( (result == -1) && (errno == EINTR) );
if(htxd_shutdown_flag == TRUE) {
break;
}
new_fd = htxd_accept_connection(socket_fd, &client_address, &address_length);
if(new_fd == -1)
{
if(htxd_shutdown_flag == TRUE) {
break;
}
HTXD_TRACE(LOG_OFF, "select time out");
continue;
}
HTXD_TRACE(LOG_OFF, "found a command for receiving");
if(htxd_is_profile_initialized(htxd_instance) != TRUE) {
HTXD_TRACE(LOG_ON, "initialize HTX profile details");
htxd_init_profile(&(htxd_instance->p_profile));
/* htxd_display_profile(htxd_instance->p_profile); */ /* To DEBUG */
register_signal_handlers();
}
/* receive the incomming command */
HTXD_TRACE(LOG_OFF, "daemon receiving command");
command_buffer = htxd_receive_command(new_fd);
if(command_buffer == NULL)
{
return -1;
}
HTXD_TRACE(LOG_OFF, "command received start<<");
HTXD_TRACE(LOG_OFF, command_buffer);
HTXD_TRACE(LOG_OFF, ">> command received end");
htxd_update_command_object(command_buffer);
if(command_buffer != NULL) {
free(command_buffer);
command_buffer = NULL;
}
/* process the received command */
HTXD_TRACE(LOG_OFF, "daemon start processing command");
command_return_code = htxd_process_command(&command_result);
/* handling if command did not generate result buffer */
if(command_result == NULL) {
command_result = malloc(HTX_ERR_MESSAGE_LENGTH);
if(command_result == NULL) {
sprintf(trace_string, "Error : malloc(%d) failed with errno = <%d> while allocating error message", HTX_ERR_MESSAGE_LENGTH, errno);
HTXD_TRACE(LOG_ON, trace_string);
exit(1);
}
strcpy(command_result, "No result is generated by the command");
}
HTXD_TRACE(LOG_OFF, "command result start<<");
HTXD_TRACE(LOG_OFF, command_result);
HTXD_TRACE(LOG_OFF, ">> command result end");
/* send back command result to client */
HTXD_TRACE(LOG_OFF, "daemon sending the result to client");
result = htxd_send_response(new_fd, command_result, command_return_code);
if(result == -1)
{
return result;
}
if(command_result != 0) {
free(command_result);
}
close(new_fd);
} while(htxd_shutdown_flag == FALSE);
if(htxd_get_ecg_list_length(htxd_instance->p_ecg_manager) > 0)
{
/* shutdown all running ecgs and return */
// htxd_shutdown_all_running_ecgs();
}
htxd_shutdown_all_mdt();
HTXD_FUNCTION_TRACE(FUN_EXIT, "htxd_start_daemon");
return result;
}