Telnet Interface

Telnet interface towards Osmocom VTY. More...

Files
file	telnet_interface.h
	minimalistic telnet/network interface it might turn into a wire interface
file	telnet_interface.c
	minimalistic telnet/network interface it might turn into a wire interface

Data Structures
struct	telnet_connection
	A telnet connection. More...

Functions
int	telnet_init (void *tall_ctx, void *priv, int port)
	Initialize telnet based VTY interface listening to 127.0.0.1. More...
int	telnet_init_dynif (void *tall_ctx, void *priv, const char *ip, int port)
	Initialize telnet based VTY interface. More...
void	telnet_exit (void)
	LLIST_HEAD (active_connections)
static int	telnet_new_connection (struct osmo_fd *fd, unsigned int what)
int	telnet_close_client (struct osmo_fd *fd)
	close a telnet connection More...
static int	client_data (struct osmo_fd *fd, unsigned int what)
void	vty_event (enum event event, int sock, struct vty *vty)
	callback from core VTY code about VTY related events More...

Variables
static void *	tall_telnet_ctx
static struct osmo_fd	server_socket
struct host	host

Detailed Description

Telnet interface towards Osmocom VTY.

This module contains the code implementing a telnet server for VTY access. This telnet server gets linked into each libosmovty-using process in order to enable interactive command-line introspection, interaction and configuration.

Function Documentation

static int client_data ( struct osmo_fd *  fd, unsigned int  what  )

static

References BSC_FD_READ, BSC_FD_WRITE, BUFFER_EMPTY, buffer_flush_all(), osmo_fd::data, osmo_fd::fd, telnet_connection::fd, vty::obuf, telnet_connection::vty, vty_read(), and osmo_fd::when.

Referenced by telnet_new_connection().

LLIST_HEAD

(

active_connections

)

int telnet_close_client

(

struct osmo_fd *

fd

)

close a telnet connection

References osmo_fd::data, telnet_connection::dbg, telnet_connection::entry, osmo_fd::fd, llist_del(), log_del_target(), and osmo_fd_unregister().

Referenced by telnet_exit(), and vty_event().

void telnet_exit

(

void

)

References telnet_connection::entry, osmo_fd::fd, telnet_connection::fd, llist_for_each_entry_safe, osmo_fd_unregister(), tall_telnet_ctx, and telnet_close_client().

int telnet_init	(	void *	tall_ctx,
		void *	priv,
		int	port
	)

Initialize telnet based VTY interface listening to 127.0.0.1.

Parameters

[in]	tall_ctx	talloc context
[in]	priv	private data to be passed to callback
[in]	port	UDP port number

References telnet_init_dynif().

int telnet_init_dynif	(	void *	tall_ctx,
		void *	priv,
		const char *	ip,
		int	port
	)

Initialize telnet based VTY interface.

Parameters

[in]	tall_ctx	talloc context
[in]	priv	private data to be passed to callback
[in]	ip	IP to listen to ('::1' for localhost, '::0' for all, ...)
[in]	port	UDP port number

References osmo_fd::data, DLGLOBAL, LOGL_ERROR, LOGL_NOTICE, LOGP, OSMO_SOCK_F_BIND, osmo_sock_init_ofd(), and tall_telnet_ctx.

Referenced by telnet_init().

static int telnet_new_connection ( struct osmo_fd *  fd, unsigned int  what  )

static

References BSC_FD_READ, osmo_fd::cb, client_data(), osmo_fd::data, telnet_connection::entry, osmo_fd::fd, telnet_connection::fd, llist_add_tail(), LOGL_ERROR, LOGP, osmo_fd_register(), telnet_connection::priv, tall_telnet_ctx, telnet_connection::vty, vty_create(), and osmo_fd::when.

void vty_event	(	enum event event	,
		int	sock,
		struct vty *	vty
	)

callback from core VTY code about VTY related events

References BSC_FD_READ, BSC_FD_WRITE, vty_signal_data::event, telnet_connection::fd, osmo_signal_dispatch(), vty::priv, S_VTY_EVENT, vty_signal_data::sock, SS_L_VTY, telnet_close_client(), vty::type, vty_signal_data::vty, VTY_CLOSED, VTY_READ, VTY_TERM, VTY_WRITE, and osmo_fd::when.

Referenced by vty_close(), vty_create(), vty_out(), and vty_read().

Variable Documentation

struct host host

struct osmo_fd server_socket

static

Initial value:

= {
        .when       = BSC_FD_READ,
        .cb         = telnet_new_connection,
        .priv_nr    = 0,
}

void* tall_telnet_ctx

static

Referenced by telnet_exit(), telnet_init_dynif(), and telnet_new_connection().