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/* VTY Command Line Handler
* Copyright (C) 1997 Kunihiro Ishiguro
*
* Revisions: Copyright (C) 2010 Chris Hall (GMCH), Highwayman
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _ZEBRA_VTY_CLI_H
#define _ZEBRA_VTY_CLI_H
#include "misc.h"
#include "vargs.h"
#include "command_local.h"
#include "vty_io.h"
#include "vty_io_basic.h"
#include "vio_fifo.h"
#include "vio_lines.h"
#include "qstring.h"
#include "keystroke.h"
/*------------------------------------------------------------------------------
* The vty_cli structure pointed to by the vty_io structure.
*/
typedef struct vty_cli* vty_cli ;
struct vty_cli
{
vio_vf vf ; /* parent */
/* History of commands */
vector_t hist ; /* embedded */
int hp ; /* current place in history */
int h_now ; /* the present moment */
/* Window width/height as reported by Telnet. 0 => unknown */
int width;
int height;
/* Configure lines. */
int lines;
bool lines_set ; /* true <=> explicitly set */
/* Terminal monitor. */
bool monitor ;
bool monitor_busy ;
/* Terminal timeout in seconds -- 0 => none */
vty_timer_time v_timeout ;
/* The incoming stuff */
keystroke_stream key_stream ;
/* drawn <=> the current prompt and user input occupy the current
* line on the screen.
*
* dirty <=> the last command output did not end with a newline.
*
* If drawn is true, the following are valid:
*
* prompt_len -- the length of the prompt part.
* (will be the "--more--" prompt in cli_more_wait)
*
* extra_len -- the length of any ^X at the cursor position
* (for when blocked waiting for queued command)
*
* echo_suppress -- the user part of the command line is suppressed
*
* NB: echo_suppress is only used for password entry.
*/
bool drawn ;
bool dirty ;
int prompt_len ;
int extra_len ;
bool echo_suppress ;
/* "cache" for prompt -- when node or host name changes, prompt does */
node_type_t prompt_node ;
name_gen_t prompt_gen ;
qstring_t prompt_for_node ;
/* password failure count -- main login or enable login. */
int password_fail ;
/* State of the CLI
*
* in_progress -- command dispatched
* blocked -- blocked until current command completes
* out_active -- contents of the command FIFO are being written away
*
* more_wait -- is in "--more--" wait state
* more_active -- more_wait and waiting for "--more--" prompt to be
* written away.
*/
bool in_progress ;
bool blocked ;
bool out_active ;
bool more_wait ;
bool more_active ;
/* This is used to control command output, so that each write_ready event
* generates at most one tranche of output.
*/
bool out_done ;
/* This is set only if the "--more--" handling is enabled */
bool more_enabled ;
/* Command Line(s)
*
* node -- the node that the CLI is in. This may be some way behind
* the VTY, but is updated when the CLI level command completes.
*
* to_do -- when current command being prepared is completed (by
* CR/LF or otherwise) this says what there now is to be done.
*
* cl -- current command line being prepared.
*
* clx -- current command line being executed.
*
* NB: during command execution vty->buf is set to point at the '\0'
* terminated current command line being executed.
*/
node_type_t node ;
cmd_do_t to_do ;
qstring cl ;
qstring clx ;
cmd_parsed_t parsed ; /* embedded */
/* CLI line buffering */
vio_fifo_t cbuf ; /* embedded */
/* CLI line control for command output & "--more--" stuff */
vio_line_control_t olc ; /* embedded */
} ;
extern vty_cli uty_cli_new(vio_vf vf) ;
extern void uty_cli_start(vty_cli cli, node_type_t node) ;
extern vty_cli uty_cli_close(vty_cli cli, bool final) ;
extern cmd_return_code_t uty_cli_auth(vty_cli) ;
extern void uty_cli_hist_show(vty_cli cli) ;
extern ulen uty_cli_prompt_len(vty_cli cli) ;
extern vty_readiness_t uty_cli(vty_cli cli) ;
extern void uty_cli_out_push(vty_cli cli) ;
extern void uty_cli_done_command(vty_cli cli, node_type_t node) ;
extern void uty_cli_out(vty_cli cli, const char *format, ...)
PRINTF_ATTRIBUTE(2, 3) ;
extern void uty_cli_out_newline(vty_cli cli) ;
extern void uty_cli_out_clear(vty_cli cli) ;
extern void uty_cli_write(vty_cli cli, const char *this, int len) ;
extern void uty_cli_wipe(vty_cli cli, int len) ;
extern void uty_cli_set_lines(vty_cli cli, int lines, bool explicit) ;
extern void uty_cli_set_window(vty_cli cli, int width, int height) ;
extern void uty_cli_enter_more_wait(vty_cli cli) ;
extern void uty_cli_exit_more_wait(vty_cli cli) ;
extern bool uty_cli_draw_if_required(vty_cli cli) ;
extern void uty_cli_pre_monitor(vty_cli cli, size_t len) ;
extern int uty_cli_post_monitor(vty_cli cli, const char* buf, size_t len) ;
#endif /* _ZEBRA_VTY_CLI_H */
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