[mirror_frr.git] / lib / vty.h

/* 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"
#include "qobj.h"

#define VTY_BUFSIZ 512
#define VTY_MAXHIST 20

#if defined(VTY_DEPRECATE_INDEX) && defined(__GNUC__) && \
    (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
#define INDEX_WARNING __attribute__((deprecated))
#else
#define INDEX_WARNING
#endif

/* VTY struct. */
struct vty 
{
  /* File descripter of this vty. */
  int fd;

  /* output FD, to support stdin/stdout combination */
  int wfd;

  /* 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 input error buffer */
  char *error_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 INDEX_WARNING;

  /* qobj object ID (replacement for "index") */
  uint64_t qobj_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];
};

#undef INDEX_WARNING

static inline void vty_push_context(struct vty *vty,
                                    int node, uint64_t id, void *idx)
{
  vty->node = node;
  vty->qobj_index = id;
#if defined(VTY_DEPRECATE_INDEX) && defined(__GNUC__) && \
    (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
  vty->index = idx;
#pragma GCC diagnostic pop
#else
  vty->index = idx;
#endif
}

#define VTY_PUSH_CONTEXT(nodeval, ptr) \
	vty_push_context(vty, nodeval, QOBJ_ID(ptr), NULL)
#define VTY_PUSH_CONTEXT_COMPAT(nodeval, ptr) \
	vty_push_context(vty, nodeval, QOBJ_ID(ptr), ptr)

/* can return NULL if context is invalid! */
#define VTY_GET_CONTEXT(structname) \
	QOBJ_GET_TYPESAFE(vty->qobj_index, structname)

/* will return if ptr is NULL. */
#define VTY_CHECK_CONTEXT(ptr) \
	if (!ptr) { \
		vty_out (vty, "Current configuration object was deleted " \
				"by another process.%s", VTY_NEWLINE); \
		return CMD_WARNING; \
	}

/* struct structname *ptr = <context>;   ptr will never be NULL. */
#define VTY_DECLVAR_CONTEXT(structname, ptr) \
	struct structname *ptr = VTY_GET_CONTEXT(structname); \
	VTY_CHECK_CONTEXT(ptr);

struct vty_arg
{
  const char *name;
  const char *value;
  const char **argv;
  int argc;
};

/* 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) == '-') \
    { \
      vty_out (vty, "%% Invalid %s value (dash)%s", NAME, VTY_NEWLINE); \
      return CMD_WARNING; \
    } \
  if (*endptr != '\0') \
    { \
      vty_out (vty, "%% Invalid %s value (%s)%s", NAME, endptr, VTY_NEWLINE); \
      return CMD_WARNING; \
    } \
  if (errno) \
    { \
      vty_out (vty, "%% Invalid %s value (error %d)%s", NAME, errno, VTY_NEWLINE); \
      return CMD_WARNING; \
    } \
} while (0)

/* Utility macros to convert VTY argument to unsigned long long */
#define VTY_GET_ULL(NAME,V,STR) \
do { \
  char *endptr = NULL; \
  errno = 0; \
  (V) = strtoull ((STR), &endptr, 10); \
  if (*(STR) == '-') \
    { \
      vty_out (vty, "%% Invalid %s value (dash)%s", NAME, VTY_NEWLINE); \
      return CMD_WARNING; \
    } \
  if (*endptr != '\0') \
    { \
      vty_out (vty, "%% Invalid %s value (%s)%s", NAME, endptr, VTY_NEWLINE); \
      return CMD_WARNING; \
    } \
  if (errno) \
    { \
      vty_out (vty, "%% Invalid %s value (error %d)%s", NAME, errno, 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 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)

#define VTY_WARN_EXPERIMENTAL()                                               \
do {                                                                          \
  vty_out (vty, "%% WARNING: this command is experimental. Both its name and" \
                " parameters may%s%% change in a future version of Quagga,"   \
                " possibly breaking your configuration!%s",                   \
                VTY_NEWLINE, VTY_NEWLINE);                                    \
} 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 struct vty *vty_stdio (void (*atclose)(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 (char *buf, size_t len);

extern const char *vty_get_arg_value (struct vty_arg **, const char *);
extern struct vty_arg *vty_get_arg (struct vty_arg **, const char *);

#endif /* _ZEBRA_VTY_H */
Commit	Line	Data
	1	/* Virtual terminal [aka TeletYpe] interface routine
	2	Copyright (C) 1997 Kunihiro Ishiguro
	3
	4	This file is part of GNU Zebra.
	5
	6	GNU Zebra is free software; you can redistribute it and/or modify it
	7	under the terms of the GNU General Public License as published by the
	8	Free Software Foundation; either version 2, or (at your option) any
	9	later version.
	10
	11	GNU Zebra is distributed in the hope that it will be useful, but
	12	WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Zebra; see the file COPYING. If not, write to the Free
	18	Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	19	02111-1307, USA. */
	20
	21	#ifndef _ZEBRA_VTY_H
	22	#define _ZEBRA_VTY_H
	23
	24	#include "thread.h"
	25	#include "log.h"
	26	#include "sockunion.h"
	27	#include "qobj.h"
	28
	29	#define VTY_BUFSIZ 512
	30	#define VTY_MAXHIST 20
	31
	32	#if defined(VTY_DEPRECATE_INDEX) && defined(__GNUC__) && \
	33	(__GNUC__ > 4 \|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
	34	#define INDEX_WARNING __attribute__((deprecated))
	35	#else
	36	#define INDEX_WARNING
	37	#endif
	38
	39	/* VTY struct. */
	40	struct vty
	41	{
	42	/* File descripter of this vty. */
	43	int fd;
	44
	45	/* output FD, to support stdin/stdout combination */
	46	int wfd;
	47
	48	/* Is this vty connect to file or not */
	49	enum {VTY_TERM, VTY_FILE, VTY_SHELL, VTY_SHELL_SERV} type;
	50
	51	/* Node status of this vty */
	52	int node;
	53
	54	/* Failure count */
	55	int fail;
	56
	57	/* Output buffer. */
	58	struct buffer *obuf;
	59
	60	/* Command input buffer */
	61	char *buf;
	62
	63	/* Command input error buffer */
	64	char *error_buf;
	65
	66	/* Command cursor point */
	67	int cp;
	68
	69	/* Command length */
	70	int length;
	71
	72	/* Command max length. */
	73	int max;
	74
	75	/* Histry of command */
	76	char *hist[VTY_MAXHIST];
	77
	78	/* History lookup current point */
	79	int hp;
	80
	81	/* History insert end point */
	82	int hindex;
	83
	84	/* For current referencing point of interface, route-map,
	85	access-list etc... */
	86	void *index INDEX_WARNING;
	87
	88	/* qobj object ID (replacement for "index") */
	89	uint64_t qobj_index;
	90
	91	/* For multiple level index treatment such as key chain and key. */
	92	void *index_sub;
	93
	94	/* For escape character. */
	95	unsigned char escape;
	96
	97	/* Current vty status. */
	98	enum {VTY_NORMAL, VTY_CLOSE, VTY_MORE, VTY_MORELINE} status;
	99
	100	/* IAC handling: was the last character received the
	101	IAC (interpret-as-command) escape character (and therefore the next
	102	character will be the command code)? Refer to Telnet RFC 854. */
	103	unsigned char iac;
	104
	105	/* IAC SB (option subnegotiation) handling */
	106	unsigned char iac_sb_in_progress;
	107	/* At the moment, we care only about the NAWS (window size) negotiation,
	108	and that requires just a 5-character buffer (RFC 1073):
	109	<NAWS char> <16-bit width> <16-bit height> */
	110	#define TELNET_NAWS_SB_LEN 5
	111	unsigned char sb_buf[TELNET_NAWS_SB_LEN];
	112	/* How many subnegotiation characters have we received? We just drop
	113	those that do not fit in the buffer. */
	114	size_t sb_len;
	115
	116	/* Window width/height. */
	117	int width;
	118	int height;
	119
	120	/* Configure lines. */
	121	int lines;
	122
	123	/* Terminal monitor. */
	124	int monitor;
	125
	126	/* In configure mode. */
	127	int config;
	128
	129	/* Read and write thread. */
	130	struct thread *t_read;
	131	struct thread *t_write;
	132
	133	/* Timeout seconds and thread. */
	134	unsigned long v_timeout;
	135	struct thread *t_timeout;
	136
	137	/* What address is this vty comming from. */
	138	char address[SU_ADDRSTRLEN];
	139	};
	140
	141	#undef INDEX_WARNING
	142
	143	static inline void vty_push_context(struct vty *vty,
	144	int node, uint64_t id, void *idx)
	145	{
	146	vty->node = node;
	147	vty->qobj_index = id;
	148	#if defined(VTY_DEPRECATE_INDEX) && defined(__GNUC__) && \
	149	(__GNUC__ > 4 \|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
	150	#pragma GCC diagnostic push
	151	#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
	152	vty->index = idx;
	153	#pragma GCC diagnostic pop
	154	#else
	155	vty->index = idx;
	156	#endif
	157	}
	158
	159	#define VTY_PUSH_CONTEXT(nodeval, ptr) \
	160	vty_push_context(vty, nodeval, QOBJ_ID(ptr), NULL)
	161	#define VTY_PUSH_CONTEXT_COMPAT(nodeval, ptr) \
	162	vty_push_context(vty, nodeval, QOBJ_ID(ptr), ptr)
	163
	164	/* can return NULL if context is invalid! */
	165	#define VTY_GET_CONTEXT(structname) \
	166	QOBJ_GET_TYPESAFE(vty->qobj_index, structname)
	167
	168	/* will return if ptr is NULL. */
	169	#define VTY_CHECK_CONTEXT(ptr) \
	170	if (!ptr) { \
	171	vty_out (vty, "Current configuration object was deleted " \
	172	"by another process.%s", VTY_NEWLINE); \
	173	return CMD_WARNING; \
	174	}
	175
	176	/* struct structname ptr = <context>; ptr will never be NULL. /
	177	#define VTY_DECLVAR_CONTEXT(structname, ptr) \
	178	struct structname *ptr = VTY_GET_CONTEXT(structname); \
	179	VTY_CHECK_CONTEXT(ptr);
	180
	181	struct vty_arg
	182	{
	183	const char *name;
	184	const char *value;
	185	const char **argv;
	186	int argc;
	187	};
	188
	189	/* Integrated configuration file. */
	190	#define INTEGRATE_DEFAULT_CONFIG "Quagga.conf"
	191
	192	/* Small macro to determine newline is newline only or linefeed needed. */
	193	#define VTY_NEWLINE ((vty->type == VTY_TERM) ? "\r\n" : "\n")
	194
	195	/* Default time out value */
	196	#define VTY_TIMEOUT_DEFAULT 600
	197
	198	/* Vty read buffer size. */
	199	#define VTY_READ_BUFSIZ 512
	200
	201	/* Directory separator. */
	202	#ifndef DIRECTORY_SEP
	203	#define DIRECTORY_SEP '/'
	204	#endif /* DIRECTORY_SEP */
	205
	206	#ifndef IS_DIRECTORY_SEP
	207	#define IS_DIRECTORY_SEP(c) ((c) == DIRECTORY_SEP)
	208	#endif
	209
	210	/* GCC have printf type attribute check. */
	211	#ifdef __GNUC__
	212	#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
	213	#else
	214	#define PRINTF_ATTRIBUTE(a,b)
	215	#endif /* __GNUC__ */
	216
	217	/* Utility macros to convert VTY argument to unsigned long */
	218	#define VTY_GET_ULONG(NAME,V,STR) \
	219	do { \
	220	char *endptr = NULL; \
	221	errno = 0; \
	222	(V) = strtoul ((STR), &endptr, 10); \
	223	if (*(STR) == '-') \
	224	{ \
	225	vty_out (vty, "%% Invalid %s value (dash)%s", NAME, VTY_NEWLINE); \
	226	return CMD_WARNING; \
	227	} \
	228	if (*endptr != '\0') \
	229	{ \
	230	vty_out (vty, "%% Invalid %s value (%s)%s", NAME, endptr, VTY_NEWLINE); \
	231	return CMD_WARNING; \
	232	} \
	233	if (errno) \
	234	{ \
	235	vty_out (vty, "%% Invalid %s value (error %d)%s", NAME, errno, VTY_NEWLINE); \
	236	return CMD_WARNING; \
	237	} \
	238	} while (0)
	239
	240	/* Utility macros to convert VTY argument to unsigned long long */
	241	#define VTY_GET_ULL(NAME,V,STR) \
	242	do { \
	243	char *endptr = NULL; \
	244	errno = 0; \
	245	(V) = strtoull ((STR), &endptr, 10); \
	246	if (*(STR) == '-') \
	247	{ \
	248	vty_out (vty, "%% Invalid %s value (dash)%s", NAME, VTY_NEWLINE); \
	249	return CMD_WARNING; \
	250	} \
	251	if (*endptr != '\0') \
	252	{ \
	253	vty_out (vty, "%% Invalid %s value (%s)%s", NAME, endptr, VTY_NEWLINE); \
	254	return CMD_WARNING; \
	255	} \
	256	if (errno) \
	257	{ \
	258	vty_out (vty, "%% Invalid %s value (error %d)%s", NAME, errno, VTY_NEWLINE); \
	259	return CMD_WARNING; \
	260	} \
	261	} while (0)
	262
	263	/*
	264	* The logic below ((TMPL) <= ((MIN) && (TMPL) != (MIN)) is
	265	* done to circumvent the compiler complaining about
	266	* comparing unsigned numbers against zero, if MIN is zero.
	267	* NB: The compiler isn't smart enough to supress the warning
	268	* if you write (MIN) != 0 && tmpl < (MIN).
	269	*/
	270	#define VTY_GET_INTEGER_RANGE_HEART(NAME,TMPL,STR,MIN,MAX) \
	271	do { \
	272	VTY_GET_ULONG(NAME, (TMPL), STR); \
	273	if ( ((TMPL) <= (MIN) && (TMPL) != (MIN)) \|\| (TMPL) > (MAX) ) \
	274	{ \
	275	vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE);\
	276	return CMD_WARNING; \
	277	} \
	278	} while (0)
	279
	280	#define VTY_GET_INTEGER_RANGE(NAME,V,STR,MIN,MAX) \
	281	do { \
	282	unsigned long long tmpl; \
	283	VTY_GET_INTEGER_RANGE_HEART(NAME,tmpl,STR,MIN,MAX); \
	284	(V) = tmpl; \
	285	} while (0)
	286
	287	#define VTY_CHECK_INTEGER_RANGE(NAME,STR,MIN,MAX) \
	288	do { \
	289	unsigned long tmpl; \
	290	VTY_GET_INTEGER_RANGE_HEART(NAME,tmpl,STR,MIN,MAX); \
	291	} while (0)
	292
	293	#define VTY_GET_INTEGER(NAME,V,STR) \
	294	VTY_GET_INTEGER_RANGE(NAME,V,STR,0U,UINT32_MAX)
	295
	296	#define VTY_GET_IPV4_ADDRESS(NAME,V,STR) \
	297	do { \
	298	int retv; \
	299	retv = inet_aton ((STR), &(V)); \
	300	if (!retv) \
	301	{ \
	302	vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE); \
	303	return CMD_WARNING; \
	304	} \
	305	} while (0)
	306
	307	#define VTY_GET_IPV4_PREFIX(NAME,V,STR) \
	308	do { \
	309	int retv; \
	310	retv = str2prefix_ipv4 ((STR), &(V)); \
	311	if (retv <= 0) \
	312	{ \
	313	vty_out (vty, "%% Invalid %s value%s", NAME, VTY_NEWLINE); \
	314	return CMD_WARNING; \
	315	} \
	316	} while (0)
	317
	318	#define VTY_WARN_EXPERIMENTAL() \
	319	do { \
	320	vty_out (vty, "%% WARNING: this command is experimental. Both its name and" \
	321	" parameters may%s%% change in a future version of Quagga," \
	322	" possibly breaking your configuration!%s", \
	323	VTY_NEWLINE, VTY_NEWLINE); \
	324	} while (0)
	325
	326	/* Exported variables */
	327	extern char integrate_default[];
	328
	329	/* Prototypes. */
	330	extern void vty_init (struct thread_master *);
	331	extern void vty_init_vtysh (void);
	332	extern void vty_terminate (void);
	333	extern void vty_reset (void);
	334	extern struct vty *vty_new (void);
	335	extern struct vty vty_stdio (void (atclose)(void));
	336	extern int vty_out (struct vty , const char , ...) PRINTF_ATTRIBUTE(2, 3);
	337	extern void vty_read_config (char , char );
	338	extern void vty_time_print (struct vty *, int);
	339	extern void vty_serv_sock (const char , unsigned short, const char );
	340	extern void vty_close (struct vty *);
	341	extern char *vty_get_cwd (void);
	342	extern void vty_log (const char level, const char proto,
	343	const char fmt, struct timestamp_control , va_list);
	344	extern int vty_config_lock (struct vty *);
	345	extern int vty_config_unlock (struct vty *);
	346	extern int vty_shell (struct vty *);
	347	extern int vty_shell_serv (struct vty *);
	348	extern void vty_hello (struct vty *);
	349
	350	/* Send a fixed-size message to all vty terminal monitors; this should be
	351	an async-signal-safe function. */
	352	extern void vty_log_fixed (char *buf, size_t len);
	353
	354	extern const char vty_get_arg_value (struct vty_arg , const char );
	355	extern struct vty_arg vty_get_arg (struct vty_arg , const char );
	356
	357	#endif /* _ZEBRA_VTY_H */