noit_console_telnet.h

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1	/*
2	* Copyright (c) 1989, 1993
3	* The Regents of the University of California. All rights reserved.
4	* Copyright (c) 2007
5	* OmnitTI Computer Consulting, Inc. All rights reserved.
6	*
7	* Redistribution and use in source and binary forms, with or without
8	* modification, are permitted provided that the following conditions
9	* are met:
10	* 1. Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.
12	* 2. Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.
15	* 3. All advertising materials mentioning features or use of this software
16	* must display the following acknowledgement:
17	* This product includes software developed by the University of
18	* California, Berkeley and its contributors.
19	* 4. Neither the name of the University nor the names of its contributors
20	* may be used to endorse or promote products derived from this software
21	* without specific prior written permission.
22	*
23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33	* SUCH DAMAGE.
34	*
35	* @(#)defs.h 8.1 (Berkeley) 6/4/93
36	*/
37
38	#ifndef _NOIT_CONSOLE_TELNET_H
39	#define _NOIT_CONSOLE_TELNET_H
40
41	#include "noit_defines.h"
42	#include "utils/noit_hash.h"
43
44	#include <arpa/telnet.h>
45	#include <sys/ioctl.h>
46	#include <sys/ioctl_compat.h>
47	#ifdef HAVE_TERMIOS_H
48	#include <termios.h>
49	#endif
50	#ifdef HAVE_TERM_H
51	#include <term.h>
52	#endif
53
54	#define LINEMODE 1
55
56	#ifndef _POSIX_VDISABLE
57	# ifdef VDISABLE
58	# define _POSIX_VDISABLE VDISABLE
59	# else
60	# define _POSIX_VDISABLE ((unsigned char)'\377')
61	# endif
62	#endif
63
64	/*
65	* Structures of information for each special character function.
66	*/
67	typedef unsigned char cc_t;
68
69	typedef struct {
70	unsigned char flag; /* the flags for this function */
71	cc_t val; /* the value of the special character */
72	} slcent, *Slcent;
73
74	typedef struct {
75	slcent defset; /* the default settings */
76	slcent current; /* the current settings */
77	cc_t sptr; / a pointer to the char in */
78	/* system data structures */
79	} slcfun, *Slcfun;
80
81	#ifndef USE_TERMIO
82	struct termbuf {
83	struct sgttyb sg;
84	struct tchars tc;
85	struct ltchars ltc;
86	int state;
87	int lflags;
88	};
89	# define cfsetospeed(tp, val) (tp)->sg.sg_ospeed = (val)
90	# define cfsetispeed(tp, val) (tp)->sg.sg_ispeed = (val)
91	# define cfgetospeed(tp) (tp)->sg.sg_ospeed
92	# define cfgetispeed(tp) (tp)->sg.sg_ispeed
93	#else /* USE_TERMIO */
94	# ifndef TCSANOW
95	# ifdef TCSETS
96	# define TCSANOW TCSETS
97	# define TCSADRAIN TCSETSW
98	# define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
99	# else
100	# ifdef TCSETA
101	# define TCSANOW TCSETA
102	# define TCSADRAIN TCSETAW
103	# define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
104	# else
105	# define TCSANOW TIOCSETA
106	# define TCSADRAIN TIOCSETAW
107	# define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
108	# endif
109	# endif
110	# define tcsetattr(f, a, t) ioctl(f, a, t)
111	# define cfsetospeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
112	(tp)->c_cflag \|= (val)
113	# define cfgetospeed(tp) ((tp)->c_cflag & CBAUD)
114	# ifdef CIBAUD
115	# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CIBAUD; \
116	(tp)->c_cflag \|= ((val)<<IBSHIFT)
117	# define cfgetispeed(tp) (((tp)->c_cflag & CIBAUD)>>IBSHIFT)
118	# else
119	# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
120	(tp)->c_cflag \|= (val)
121	# define cfgetispeed(tp) ((tp)->c_cflag & CBAUD)
122	# endif
123	# endif /* TCSANOW */
124	#endif /* USE_TERMIO */
125
126	/*
127	* The following are some clocks used to decide how to interpret
128	* the relationship between various variables.
129	*/
130
131	struct clocks_t {
132	int
133	system, /* what the current time is */
134	echotoggle, /* last time user entered echo character */
135	modenegotiated, /* last time operating mode negotiated */
136	didnetreceive, /* last time we read data from network */
137	ttypesubopt, /* ttype subopt is received */
138	tspeedsubopt, /* tspeed subopt is received */
139	environsubopt, /* environ subopt is received */
140	oenvironsubopt, /* old environ subopt is received */
141	xdisplocsubopt, /* xdisploc subopt is received */
142	baseline, /* time started to do timed action */
143	gotDM; /* when did we last see a data mark */
144	};
145
146	typedef struct {
147	noit_hash_table _env;
148	unsigned char *_subbuffer;
149	unsigned char *_subpointer;
150	unsigned char *_subend;
151	unsigned char *_subsave;
152	unsigned char _pty_buf[1024];
153	int _pty_fill;
154	slcfun _slctab[NSLC + 1];
155	char _options[256];
156	char _do_dont_resp[256];
157	char _will_wont_resp[256];
158	int _SYNCHing;
159	int _flowmode;
160	int _restartany;
161	int __terminit;
162	int _linemode;
163	int _uselinemode;
164	int _alwayslinemode;
165	int _editmode;
166	int _useeditmode;
167	unsigned char *_def_slcbuf;
168	int _def_slclen;
169	int _slcchange; /* change to slc is requested */
170	unsigned char _slcptr; / pointer into slc buffer */
171	unsigned char _slcbuf[NSLC6]; / buffer for slc negotiation */
172
173	int _def_tspeed; /* This one */
174	int _def_rspeed; /* and this one, need init to -1 */
175	#if !defined(LINEMODE) \|\| !defined(KLUDGELINEMODE)
176	int _turn_on_sga;
177	#endif
178	#ifdef TIOCSWINSZ
179	int _def_row;
180	int _def_col;
181	#endif
182	char _terminalname[41];
183	struct clocks_t _clocks;
184	#ifdef USE_TERMIO
185	struct termios _termbuf, _termbuf2; /* pty control structure */
186	#else
187	struct termbuf _termbuf, _termbuf2; /* pty control structure */
188	#endif
189	} *noit_console_telnet_closure_t;
190
191
192	/*
193	* We keep track of each side of the option negotiation.
194	*/
195
196	#define MY_STATE_WILL 0x01
197	#define MY_WANT_STATE_WILL 0x02
198	#define MY_STATE_DO 0x04
199	#define MY_WANT_STATE_DO 0x08
200
201	/*
202	* Macros to check the current state of things
203	*/
204
205	#define my_state_is_do(opt) (ncct->telnet->_options[opt]&MY_STATE_DO)
206	#define my_state_is_will(opt) (ncct->telnet->_options[opt]&MY_STATE_WILL)
207	#define my_want_state_is_do(opt) (ncct->telnet->_options[opt]&MY_WANT_STATE_DO)
208	#define my_want_state_is_will(opt) (ncct->telnet->_options[opt]&MY_WANT_STATE_WILL)
209
210	#define my_state_is_dont(opt) (!my_state_is_do(opt))
211	#define my_state_is_wont(opt) (!my_state_is_will(opt))
212	#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt))
213	#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt))
214
215	#define set_my_state_do(opt) (ncct->telnet->_options[opt] \|= MY_STATE_DO)
216	#define set_my_state_will(opt) (ncct->telnet->_options[opt] \|= MY_STATE_WILL)
217	#define set_my_want_state_do(opt) (ncct->telnet->_options[opt] \|= MY_WANT_STATE_DO)
218	#define set_my_want_state_will(opt) (ncct->telnet->_options[opt] \|= MY_WANT_STATE_WILL)
219
220	#define set_my_state_dont(opt) (ncct->telnet->_options[opt] &= ~MY_STATE_DO)
221	#define set_my_state_wont(opt) (ncct->telnet->_options[opt] &= ~MY_STATE_WILL)
222	#define set_my_want_state_dont(opt) (ncct->telnet->_options[opt] &= ~MY_WANT_STATE_DO)
223	#define set_my_want_state_wont(opt) (ncct->telnet->_options[opt] &= ~MY_WANT_STATE_WILL)
224
225	/*
226	* Tricky code here. What we want to know is if the MY_STATE_WILL
227	* and MY_WANT_STATE_WILL bits have the same value. Since the two
228	* bits are adjacent, a little arithmatic will show that by adding
229	* in the lower bit, the upper bit will be set if the two bits were
230	* different, and clear if they were the same.
231	*/
232	#define my_will_wont_is_changing(opt) \
233	((ncct->telnet->_options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
234
235	#define my_do_dont_is_changing(opt) \
236	((ncct->telnet->_options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
237
238	/*
239	* Make everything symmetrical
240	*/
241
242	#define HIS_STATE_WILL MY_STATE_DO
243	#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO
244	#define HIS_STATE_DO MY_STATE_WILL
245	#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL
246
247	#define his_state_is_do my_state_is_will
248	#define his_state_is_will my_state_is_do
249	#define his_want_state_is_do my_want_state_is_will
250	#define his_want_state_is_will my_want_state_is_do
251
252	#define his_state_is_dont my_state_is_wont
253	#define his_state_is_wont my_state_is_dont
254	#define his_want_state_is_dont my_want_state_is_wont
255	#define his_want_state_is_wont my_want_state_is_dont
256
257	#define set_his_state_do set_my_state_will
258	#define set_his_state_will set_my_state_do
259	#define set_his_want_state_do set_my_want_state_will
260	#define set_his_want_state_will set_my_want_state_do
261
262	#define set_his_state_dont set_my_state_wont
263	#define set_his_state_wont set_my_state_dont
264	#define set_his_want_state_dont set_my_want_state_wont
265	#define set_his_want_state_wont set_my_want_state_dont
266
267	#define his_will_wont_is_changing my_do_dont_is_changing
268	#define his_do_dont_is_changing my_will_wont_is_changing
269
270	struct __noit_console_closure;
271	void
272	noit_console_telnet_willoption(struct __noit_console_closure *ncct,
273	int option);
274	void
275	noit_console_telnet_wontoption(struct __noit_console_closure *ncct,
276	int option);
277	void
278	noit_console_telnet_dooption(struct __noit_console_closure *ncct,
279	int option);
280	void
281	noit_console_telnet_dontoption(struct __noit_console_closure *ncct,
282	int option);
283	void
284	noit_console_telnet_send_do(struct __noit_console_closure *ncct,
285	int option, int init);
286	void
287	noit_console_telnet_send_dont(struct __noit_console_closure *ncct,
288	int option, int init);
289	void
290	noit_console_telnet_send_will(struct __noit_console_closure *ncct,
291	int option, int init);
292	void
293	noit_console_telnet_send_wont(struct __noit_console_closure *ncct,
294	int option, int init);
295	void
296	noit_console_telnet_doclientstat(struct __noit_console_closure *ncct);
297	void
298	noit_console_telnet_send_status(struct __noit_console_closure *ncct);
299
300	void noit_console_telnet_free(noit_console_telnet_closure_t);
301	noit_console_telnet_closure_t
302	noit_console_telnet_alloc(struct __noit_console_closure *ncct);
303	int
304	noit_console_telnet_telrcv(struct __noit_console_closure *ncct,
305	const void *buf, int buflen);
306	void ptyflush(struct __noit_console_closure *ncct);
307
308	#endif

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root/src/noit_console_telnet.h

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