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/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
***************************************************************************/
#ifndef OPENOCD_SERVER_SERVER_H
#define OPENOCD_SERVER_SERVER_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <helper/log.h>
#include <helper/replacements.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
enum connection_type {
CONNECTION_TCP,
CONNECTION_PIPE,
CONNECTION_STDINOUT
};
#define CONNECTION_LIMIT_UNLIMITED (-1)
struct connection {
int fd;
int fd_out; /* When using pipes we're writing to a different fd */
struct sockaddr_in sin;
struct command_context *cmd_ctx;
struct service *service;
bool input_pending;
void *priv;
struct connection *next;
};
struct service_driver {
/** the name of the server */
const char *name;
/** optional minimal setup to accept a connection during keep-alive */
int (*new_connection_during_keep_alive_handler)(struct connection *connection);
/**
* complete code to accept a new connection.
* If 'new_connection_during_keep_alive_handler' above is present, this can be
* either called alone during the server_loop, or after the function above.
* Check the implementation in gdb_server.
* */
int (*new_connection_handler)(struct connection *connection);
/** callback to handle incoming data */
int (*input_handler)(struct connection *connection);
/** callback to tear down the connection */
int (*connection_closed_handler)(struct connection *connection);
/** called periodically to send keep-alive messages on the connection */
void (*keep_client_alive_handler)(struct connection *connection);
};
struct service {
char *name;
enum connection_type type;
char *port;
unsigned short portnumber;
int fd;
struct sockaddr_in sin;
int max_connections;
struct connection *connections;
int (*new_connection_during_keep_alive)(struct connection *connection);
int (*new_connection)(struct connection *connection);
int (*input)(struct connection *connection);
int (*connection_closed)(struct connection *connection);
void (*keep_client_alive)(struct connection *connection);
void *priv;
struct service *next;
};
int add_service(const struct service_driver *driver, const char *port,
int max_connections, void *priv);
int remove_service(const char *name, const char *port);
int server_host_os_entry(void);
int server_host_os_close(void);
int server_preinit(void);
int server_init(struct command_context *cmd_ctx);
int server_quit(void);
void server_free(void);
void exit_on_signal(int sig);
void server_keep_clients_alive(void);
int server_loop(struct command_context *command_context);
int server_register_commands(struct command_context *context);
int connection_write(struct connection *connection, const void *data, int len);
int connection_read(struct connection *connection, void *data, int len);
bool openocd_is_shutdown_pending(void);
/**
* Defines an extended command handler function declaration to enable
* access to (and manipulation of) the server port number.
* Call server_port like a normal COMMAND_HANDLER with an extra @a out parameter
* to receive the specified port number.
*/
COMMAND_HELPER(server_pipe_command, char **out);
COMMAND_HELPER(server_port_command, unsigned short *out);
#define ERROR_SERVER_REMOTE_CLOSED (-400)
#define ERROR_CONNECTION_REJECTED (-401)
#define ERROR_SERVER_INTERRUPTED (-402)
#endif /* OPENOCD_SERVER_SERVER_H */
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