root/src/noit_console_telnet.h

Revision a50432366e0c6614924558d1aa82eaa82b967a0b, 10.7 kB (checked in by Theo Schlossnagle <jesus@omniti.com>, 6 years ago)

compiles on linux -- still no eventer, refs #12

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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 #ifdef HAVE_IOCTL_COMPAT_H
47 #include <sys/ioctl_compat.h>
48 #endif
49 #ifdef HAVE_TERMIOS_H
50 #include <termios.h>
51 #endif
52 #ifdef HAVE_TERM_H
53 #include <term.h>
54 #endif
55
56 #define LINEMODE 1
57
58 #ifndef _POSIX_VDISABLE
59 # ifdef VDISABLE
60 #  define _POSIX_VDISABLE VDISABLE
61 # else
62 #  define _POSIX_VDISABLE ((unsigned char)'\377')
63 # endif
64 #endif
65
66 /*
67  * Structures of information for each special character function.
68  */
69
70 typedef struct {
71         unsigned char   flag;           /* the flags for this function */
72         unsigned char   val;            /* the value of the special character */
73 } slcent, *Slcent;
74
75 typedef struct {
76         slcent          defset;         /* the default settings */
77         slcent          current;        /* the current settings */
78         unsigned char   *sptr;          /* a pointer to the char in */
79                                         /* system data structures */
80 } slcfun, *Slcfun;
81
82 #ifndef USE_TERMIO
83 struct termbuf {
84         struct sgttyb sg;
85         struct tchars tc;
86         struct ltchars ltc;
87         int state;
88         int lflags;
89 };
90 # define        cfsetospeed(tp, val)    (tp)->sg.sg_ospeed = (val)
91 # define        cfsetispeed(tp, val)    (tp)->sg.sg_ispeed = (val)
92 # define        cfgetospeed(tp)         (tp)->sg.sg_ospeed
93 # define        cfgetispeed(tp)         (tp)->sg.sg_ispeed
94 #else   /* USE_TERMIO */
95 # ifndef        TCSANOW
96 #  ifdef TCSETS
97 #   define      TCSANOW         TCSETS
98 #   define      TCSADRAIN       TCSETSW
99 #   define      tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
100 #  else
101 #   ifdef TCSETA
102 #    define     TCSANOW         TCSETA
103 #    define     TCSADRAIN       TCSETAW
104 #    define     tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
105 #   else
106 #    define     TCSANOW         TIOCSETA
107 #    define     TCSADRAIN       TIOCSETAW
108 #    define     tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
109 #   endif
110 #  endif
111 #  define       tcsetattr(f, a, t)      ioctl(f, a, t)
112 #  define       cfsetospeed(tp, val)    (tp)->c_cflag &= ~CBAUD; \
113                                         (tp)->c_cflag |= (val)
114 #  define       cfgetospeed(tp)         ((tp)->c_cflag & CBAUD)
115 #  ifdef CIBAUD
116 #   define      cfsetispeed(tp, val)    (tp)->c_cflag &= ~CIBAUD; \
117                                         (tp)->c_cflag |= ((val)<<IBSHIFT)
118 #   define      cfgetispeed(tp)         (((tp)->c_cflag & CIBAUD)>>IBSHIFT)
119 #  else
120 #   define      cfsetispeed(tp, val)    (tp)->c_cflag &= ~CBAUD; \
121                                         (tp)->c_cflag |= (val)
122 #   define      cfgetispeed(tp)         ((tp)->c_cflag & CBAUD)
123 #  endif
124 # endif /* TCSANOW */
125 #endif  /* USE_TERMIO */
126
127 /*
128  * The following are some clocks used to decide how to interpret
129  * the relationship between various variables.
130  */
131
132 struct clocks_t {
133     int
134         system,                 /* what the current time is */
135         echotoggle,             /* last time user entered echo character */
136         modenegotiated,         /* last time operating mode negotiated */
137         didnetreceive,          /* last time we read data from network */
138         ttypesubopt,            /* ttype subopt is received */
139         tspeedsubopt,           /* tspeed subopt is received */
140         environsubopt,          /* environ subopt is received */
141         oenvironsubopt,         /* old environ subopt is received */
142         xdisplocsubopt,         /* xdisploc subopt is received */
143         baseline,               /* time started to do timed action */
144         gotDM;                  /* when did we last see a data mark */
145 };
146
147 typedef struct {
148   noit_hash_table _env;
149   unsigned char *_subbuffer;
150   unsigned char *_subpointer;
151   unsigned char *_subend;
152   unsigned char *_subsave;
153   unsigned char  _pty_buf[1024];
154   int            _pty_fill;
155   slcfun         _slctab[NSLC + 1];
156   char           _options[256];
157   char           _do_dont_resp[256];
158   char           _will_wont_resp[256];
159   int            _SYNCHing;
160   int            _flowmode;
161   int            _restartany;
162   int            __terminit;
163   int            _linemode;
164   int            _uselinemode;
165   int            _alwayslinemode;
166   int            _editmode;
167   int            _useeditmode;
168   unsigned char *_def_slcbuf;
169   int            _def_slclen;
170   int            _slcchange;    /* change to slc is requested */
171   unsigned char *_slcptr;       /* pointer into slc buffer */
172   unsigned char  _slcbuf[NSLC*6];       /* buffer for slc negotiation */
173
174   int            _def_tspeed; /* This one */
175   int            _def_rspeed; /* and this one, need init to -1 */
176 #if     !defined(LINEMODE) || !defined(KLUDGELINEMODE)
177   int            _turn_on_sga;
178 #endif
179 #ifdef TIOCSWINSZ
180   int            _def_row;
181   int            _def_col;
182 #endif
183   char           _terminalname[41];
184   struct clocks_t _clocks;
185 #ifdef USE_TERMIO
186   struct termios _termbuf, _termbuf2;   /* pty control structure */
187 #else
188   struct termbuf _termbuf, _termbuf2;   /* pty control structure */
189 #endif
190 } *noit_console_telnet_closure_t;
191
192
193 /*
194  * We keep track of each side of the option negotiation.
195  */
196
197 #define MY_STATE_WILL           0x01
198 #define MY_WANT_STATE_WILL      0x02
199 #define MY_STATE_DO             0x04
200 #define MY_WANT_STATE_DO        0x08
201
202 /*
203  * Macros to check the current state of things
204  */
205
206 #define my_state_is_do(opt)             (ncct->telnet->_options[opt]&MY_STATE_DO)
207 #define my_state_is_will(opt)           (ncct->telnet->_options[opt]&MY_STATE_WILL)
208 #define my_want_state_is_do(opt)        (ncct->telnet->_options[opt]&MY_WANT_STATE_DO)
209 #define my_want_state_is_will(opt)      (ncct->telnet->_options[opt]&MY_WANT_STATE_WILL)
210
211 #define my_state_is_dont(opt)           (!my_state_is_do(opt))
212 #define my_state_is_wont(opt)           (!my_state_is_will(opt))
213 #define my_want_state_is_dont(opt)      (!my_want_state_is_do(opt))
214 #define my_want_state_is_wont(opt)      (!my_want_state_is_will(opt))
215
216 #define set_my_state_do(opt)            (ncct->telnet->_options[opt] |= MY_STATE_DO)
217 #define set_my_state_will(opt)          (ncct->telnet->_options[opt] |= MY_STATE_WILL)
218 #define set_my_want_state_do(opt)       (ncct->telnet->_options[opt] |= MY_WANT_STATE_DO)
219 #define set_my_want_state_will(opt)     (ncct->telnet->_options[opt] |= MY_WANT_STATE_WILL)
220
221 #define set_my_state_dont(opt)          (ncct->telnet->_options[opt] &= ~MY_STATE_DO)
222 #define set_my_state_wont(opt)          (ncct->telnet->_options[opt] &= ~MY_STATE_WILL)
223 #define set_my_want_state_dont(opt)     (ncct->telnet->_options[opt] &= ~MY_WANT_STATE_DO)
224 #define set_my_want_state_wont(opt)     (ncct->telnet->_options[opt] &= ~MY_WANT_STATE_WILL)
225
226 /*
227  * Tricky code here.  What we want to know is if the MY_STATE_WILL
228  * and MY_WANT_STATE_WILL bits have the same value.  Since the two
229  * bits are adjacent, a little arithmatic will show that by adding
230  * in the lower bit, the upper bit will be set if the two bits were
231  * different, and clear if they were the same.
232  */
233 #define my_will_wont_is_changing(opt) \
234                         ((ncct->telnet->_options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
235
236 #define my_do_dont_is_changing(opt) \
237                         ((ncct->telnet->_options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
238
239 /*
240  * Make everything symmetrical
241  */
242
243 #define HIS_STATE_WILL                  MY_STATE_DO
244 #define HIS_WANT_STATE_WILL             MY_WANT_STATE_DO
245 #define HIS_STATE_DO                    MY_STATE_WILL
246 #define HIS_WANT_STATE_DO               MY_WANT_STATE_WILL
247
248 #define his_state_is_do                 my_state_is_will
249 #define his_state_is_will               my_state_is_do
250 #define his_want_state_is_do            my_want_state_is_will
251 #define his_want_state_is_will          my_want_state_is_do
252
253 #define his_state_is_dont               my_state_is_wont
254 #define his_state_is_wont               my_state_is_dont
255 #define his_want_state_is_dont          my_want_state_is_wont
256 #define his_want_state_is_wont          my_want_state_is_dont
257
258 #define set_his_state_do                set_my_state_will
259 #define set_his_state_will              set_my_state_do
260 #define set_his_want_state_do           set_my_want_state_will
261 #define set_his_want_state_will         set_my_want_state_do
262
263 #define set_his_state_dont              set_my_state_wont
264 #define set_his_state_wont              set_my_state_dont
265 #define set_his_want_state_dont         set_my_want_state_wont
266 #define set_his_want_state_wont         set_my_want_state_dont
267
268 #define his_will_wont_is_changing       my_do_dont_is_changing
269 #define his_do_dont_is_changing         my_will_wont_is_changing
270
271 struct __noit_console_closure;
272 void
273   noit_console_telnet_willoption(struct __noit_console_closure *ncct,
274                                  int option);
275 void
276   noit_console_telnet_wontoption(struct __noit_console_closure *ncct,
277                                  int option);
278 void
279   noit_console_telnet_dooption(struct __noit_console_closure *ncct,
280                                int option);
281 void
282   noit_console_telnet_dontoption(struct __noit_console_closure *ncct,
283                                  int option);
284 void
285   noit_console_telnet_send_do(struct __noit_console_closure *ncct,
286                               int option, int init);
287 void
288   noit_console_telnet_send_dont(struct __noit_console_closure *ncct,
289                                 int option, int init);
290 void
291   noit_console_telnet_send_will(struct __noit_console_closure *ncct,
292                                 int option, int init);
293 void
294   noit_console_telnet_send_wont(struct __noit_console_closure *ncct,
295                                 int option, int init);
296 void
297   noit_console_telnet_doclientstat(struct __noit_console_closure *ncct);
298 void
299   noit_console_telnet_send_status(struct __noit_console_closure *ncct);
300
301 void noit_console_telnet_free(noit_console_telnet_closure_t);
302 noit_console_telnet_closure_t
303   noit_console_telnet_alloc(struct __noit_console_closure *ncct);
304 int
305   noit_console_telnet_telrcv(struct __noit_console_closure *ncct,
306                              const void *buf, int buflen);
307 void ptyflush(struct __noit_console_closure *ncct);
308
309 #endif
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