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/* Virtual terminal [aka TeletYpe] interface routine
Copyright (C) 1997 Kunihiro Ishiguro
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_H
#define _ZEBRA_VTY_H
#include "thread.h"
#include "log.h"
#include "sockunion.h"
#define VTY_BUFSIZ 512
#define VTY_MAXHIST 20
/* VTY struct. */
struct vty
{
/* File descripter of this vty. */
int fd;
/* Is this vty connect to file or not */
enum {VTY_TERM, VTY_FILE, VTY_SHELL, VTY_SHELL_SERV} type;
/* Node status of this vty */
int node;
/* Failure count */
int fail;
/* Output buffer. */
struct buffer *obuf;
/* Command input buffer */
char *buf;
/* Command cursor point */
int cp;
/* Command length */
int length;
/* Command max length. */
int max;
/* Histry of command */
char *hist[VTY_MAXHIST];
/* History lookup current point */
int hp;
/* History insert end point */
int hindex;
/* For current referencing point of interface, route-map,
access-list etc... */
void *index;
/* For multiple level index treatment such as key chain and key. */
void *index_sub;
/* For escape character. */
unsigned char escape;
/* Current vty status. */
enum {VTY_NORMAL, VTY_CLOSE, VTY_MORE, VTY_MORELINE} status;
/* IAC handling: was the last character received the
IAC (interpret-as-command) escape character (and therefore the next
character will be the command code)? Refer to Telnet RFC 854. */
unsigned char iac;
/* IAC SB (option subnegotiation) handling */
unsigned char iac_sb_in_progress;
/* At the moment, we care only about the NAWS (window size) negotiation,
and that requires just a 5-character buffer (RFC 1073):
<NAWS char> <16-bit width> <16-bit height> */
#define TELNET_NAWS_SB_LEN 5
unsigned char sb_buf[TELNET_NAWS_SB_LEN];
/* How many subnegotiation characters have we received? We just drop
those that do not fit in the buffer. */
size_t sb_len;
/* Window width/height. */
int width;
int height;
/* Configure lines. */
int lines;
/* Terminal monitor. */
int monitor;
/* In configure mode. */
int config;
/* Read and write thread. */
struct thread *t_read;
struct thread *t_write;
/* Timeout seconds and thread. */
unsigned long v_timeout;
struct thread *t_timeout;
/* What address is this vty comming from. */
char address[SU_ADDRSTRLEN];
};
/* Integrated configuration file. */
#define INTEGRATE_DEFAULT_CONFIG "Quagga.conf"
/* Small macro to determine newline is newline only or linefeed needed. */
#define VTY_NEWLINE ((vty->type == VTY_TERM) ? "\r\n" : "\n")
/* Default time out value */
#define VTY_TIMEOUT_DEFAULT 600
/* Vty read buffer size. */
#define VTY_READ_BUFSIZ 512
/* Directory separator. */
#ifndef DIRECTORY_SEP
#define DIRECTORY_SEP '/'
#endif /* DIRECTORY_SEP */
#ifndef IS_DIRECTORY_SEP
#define IS_DIRECTORY_SEP(c) ((c) == DIRECTORY_SEP)
#endif
/* GCC have printf type attribute check. */
#ifdef __GNUC__
#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
#else
#define PRINTF_ATTRIBUTE(a,b)
#endif /* __GNUC__ */
/* Utility macros to convert VTY argument to unsigned long */
#define VTY_GET_ULONG(NAME,V,STR) \
do { \
char *endptr = NULL; \
errno = 0; \
(V) = strtoul ((STR), &endptr, 10); \
if (*(STR) == '-' || *endptr != '\0' || errno) \
{ \
vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE); \
return CMD_WARNING; \
} \
} while (0)
/*
* The logic below ((TMPL) <= ((MIN) && (TMPL) != (MIN)) is
* done to circumvent the compiler complaining about
* comparing unsigned numbers against zero, if MIN is zero.
* NB: The compiler isn't smart enough to supress the warning
* if you write (MIN) != 0 && tmpl < (MIN).
*/
#define VTY_GET_INTEGER_RANGE_HEART(NAME,TMPL,STR,MIN,MAX) \
do { \
VTY_GET_ULONG(NAME, (TMPL), STR); \
if ( ((TMPL) <= (MIN) && (TMPL) != (MIN)) || (TMPL) > (MAX) ) \
{ \
vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE);\
return CMD_WARNING; \
} \
} while (0)
#define VTY_GET_INTEGER_RANGE(NAME,V,STR,MIN,MAX) \
do { \
unsigned long tmpl; \
VTY_GET_INTEGER_RANGE_HEART(NAME,tmpl,STR,MIN,MAX); \
(V) = tmpl; \
} while (0)
#define VTY_CHECK_INTEGER_RANGE(NAME,STR,MIN,MAX) \
do { \
unsigned long tmpl; \
VTY_GET_INTEGER_RANGE_HEART(NAME,tmpl,STR,MIN,MAX); \
} while (0)
#define VTY_GET_INTEGER(NAME,V,STR) \
VTY_GET_INTEGER_RANGE(NAME,V,STR,0U,UINT32_MAX)
#define VTY_GET_IPV4_ADDRESS(NAME,V,STR) \
do { \
int retv; \
retv = inet_aton ((STR), &(V)); \
if (!retv) \
{ \
vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE); \
return CMD_WARNING; \
} \
} while (0)
#define VTY_GET_IPV4_PREFIX(NAME,V,STR) \
do { \
int retv; \
retv = str2prefix_ipv4 ((STR), &(V)); \
if (retv <= 0) \
{ \
vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE); \
return CMD_WARNING; \
} \
} while (0)
/* Exported variables */
extern char integrate_default[];
/* Prototypes. */
extern void vty_init (struct thread_master *);
extern void vty_init_vtysh (void);
extern void vty_terminate (void);
extern void vty_reset (void);
extern struct vty *vty_new (void);
extern int vty_out (struct vty *, const char *, ...) PRINTF_ATTRIBUTE(2, 3);
extern void vty_read_config (char *, char *);
extern void vty_time_print (struct vty *, int);
extern void vty_serv_sock (const char *, unsigned short, const char *);
extern void vty_close (struct vty *);
extern char *vty_get_cwd (void);
extern void vty_log (const char *level, const char *proto,
const char *fmt, struct timestamp_control *, va_list);
extern int vty_config_lock (struct vty *);
extern int vty_config_unlock (struct vty *);
extern int vty_shell (struct vty *);
extern int vty_shell_serv (struct vty *);
extern void vty_hello (struct vty *);
/* Send a fixed-size message to all vty terminal monitors; this should be
an async-signal-safe function. */
extern void vty_log_fixed (const char *buf, size_t len);
#endif /* _ZEBRA_VTY_H */
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