summaryrefslogtreecommitdiffstats
path: root/include/osmocom/vty/vty.h
blob: f82ada1cc0e874e476f19e9324ab1813f71d6141 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
#ifndef _VTY_H
#define _VTY_H

#include <stdio.h>
#include <stdarg.h>

/* GCC have printf type attribute check.  */
#ifdef __GNUC__
#define VTY_PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
#else
#define VTY_PRINTF_ATTRIBUTE(a,b)
#endif				/* __GNUC__ */

/* Does the I/O error indicate that the operation should be retried later? */
#define ERRNO_IO_RETRY(EN) \
	(((EN) == EAGAIN) || ((EN) == EWOULDBLOCK) || ((EN) == EINTR))

/* Vty read buffer size. */
#define VTY_READ_BUFSIZ 512

#define VTY_BUFSIZ 512
#define VTY_MAXHIST 20

/* Vty events */
enum event {
	VTY_SERV,
	VTY_READ,
	VTY_WRITE,
	VTY_CLOSED,
	VTY_TIMEOUT_RESET,
#ifdef VTYSH
	VTYSH_SERV,
	VTYSH_READ,
	VTYSH_WRITE
#endif				/* VTYSH */
};

struct vty {
	FILE *file;

	/* private data, specified by creator */
	void *priv;

	/* 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;

	int monitor;

	/* In configure mode. */
	int config;
};

/* Small macro to determine newline is newline only or linefeed needed. */
#define VTY_NEWLINE  ((vty->type == VTY_TERM) ? "\r\n" : "\n")

static inline char *vty_newline(struct vty *vty)
{
	return VTY_NEWLINE;
}

/* Prototypes. */
void vty_init(const char *name, const char *version, const char *copyright);
int vty_read_config_file(const char *file_name, void *priv);
void vty_init_vtysh (void);
void vty_reset (void);
struct vty *vty_new (void);
struct vty *vty_create (int vty_sock, void *priv);
int vty_out (struct vty *, const char *, ...) VTY_PRINTF_ATTRIBUTE(2, 3);
int vty_out_newline(struct vty *);
int vty_read(struct vty *vty);
//void vty_time_print (struct vty *, int);
void vty_close (struct vty *);
char *vty_get_cwd (void);
void vty_log (const char *level, const char *proto, const char *fmt, va_list);
int vty_config_lock (struct vty *);
int vty_config_unlock (struct vty *);
int vty_shell (struct vty *);
int vty_shell_serv (struct vty *);
void vty_hello (struct vty *);

void *tall_vty_ctx;
#endif