1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1992-2012 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <glenn.s.fowler@gmail.com> *
18 * David Korn <dgkorn@gmail.com> *
19 * *
20 ***********************************************************************/
21 #pragma prototyped
22 /*
23 * stty.c
24 * Written by David Korn
25 * Tue Apr 4 10:46:00 EDT 1995
26 */
27
28 static const char usage[] =
29 "[-?@(#)$Id: stty (AT&T Research) 2010-04-01 $\n]"
30 USAGE_LICENSE
31 "[+NAME?stty - set or get terminal modes]"
32 "[+DESCRIPTION?\bstty\b sets certain terminal I/O modes for the device "
33 "that is the current standard input; without arguments, it writes the "
34 "settings of certain modes to standard output.]"
35 "[a:all?Writes to standard output all of the mode settings.]"
36 "[f|F:fd|file?Use \afd\a as the terminal fd.]#[fd:=0]"
37 "[g:save?Writes the current settings to standard output in a form that "
38 "can be used as an argument to another \bstty\b command. The \brows\b "
39 "and \bcolumns\b values are not included.]"
40 "[t:terminal-group?Print the terminal group id of the device, -1 if "
41 "unknown.]"
42 "\n"
43 "\n[mode ...]\n"
44 "\n"
45 "[+EXTENDED DESCRIPTION?Modes are specified either as a single name or "
46 "as a name followed by a value. As indicated below, many of the mode "
47 "names can be preceded by a \b-\b to negate its meaning. Modes are "
48 "listed by group corresponding to field in the \btermios\b structure "
49 "defined in \b<termios.h>\b. Modes in the last group are implemented "
50 "using options in the previous groups. Note that many combinations of "
51 "modes make no sense, but no sanity checking is performed. The modes are "
52 "selected from the following:]"
53 "{\fabc\f}"
54 "[+EXIT STATUS?]"
55 "{"
56 "[+0?All modes reported or set successfully.]"
57 "[+>0?Standard input not a terminaol or one or more modes "
58 "failed.]"
59 "}"
60 "[+SEE ALSO?\btegetattr\b(2), \btcsetattr\b(2), \bioctl\b(2)]"
61 ;
62
63 #include <cmd.h>
64 #include <ccode.h>
65 #include <ctype.h>
66 #include <ast_tty.h>
67 #if _sys_ioctl
68 #include <sys/ioctl.h>
69 #endif
70
71 #define C(x) ERROR_catalog(x)
72
73 #ifndef _POSIX_VDISABLE
74 # define _POSIX_VDISABLE 0
75 #endif
76
77 #ifndef NCCS
78 # ifdef NCC
79 # define NCCS NCC
80 # else
81 # define NCCS elementsof(((struct termio*)0)->c_cc)
82 # endif
83 #endif
84
85 /* command options */
86 #define A_FLAG 1
87 #define G_FLAG 2
88 #define T_FLAG 4
89
90 /* termios fields */
91 #define C_FLAG 1
92 #define C_LINE 2
93 #define C_SPEED 3
94 #define I_FLAG 4
95 #define O_FLAG 5
96 #define L_FLAG 6
97 #define T_CHAR 7
98 #define W_SIZE 8
99
100 #define BIT 1
101 #define BITS 2
102 #define NUM 3
103 #define CHAR 4
104 #define SPEED 5
105 #define SIZE 6
106 #define MIXED 7
107 #define SANE 8
108 #define COOKED 9
109 #define CASE 10
110 #define TABS 11
111 #define WIND 12
112
113 #undef SS /* who co-opted this namespace? */
114
115 #define IG 0x0001 /* ignore display */
116 #define NL 0x0002 /* entry ends line of display */
117 #define SS 0x0004 /* set in sane mode */
118 #define US 0x0010 /* unset in sane mode */
119
120 typedef struct tty_s
121 {
122 const char name[8];
123 unsigned char type;
124 unsigned char field;
125 short flags;
126 unsigned long mask;
127 unsigned long val;
128 const char description[76];
129 } Tty_t;
130
131 static const Tty_t Ttable[] =
132 {
133 #ifdef CBAUD
134 { "ispeed", NUM, C_SPEED,0, CBAUD, 0, C("\an\a is the input baud rate") },
135 { "ospeed", NUM, C_SPEED,0, CBAUD, 0, C("\an\a is the output baud rate") },
136 { "speed", NUM, C_SPEED,IG, CBAUD },
137 #endif
138 { "0", SPEED, C_FLAG, 0, B0 },
139 { "50", SPEED, C_FLAG, 0, B50 },
140 { "75", SPEED, C_FLAG, 0, B75 },
141 { "110", SPEED, C_FLAG, 0, B110 },
142 { "134", SPEED, C_FLAG, 0, B134 },
143 { "150", SPEED, C_FLAG, 0, B150 },
144 { "200", SPEED, C_FLAG, 0, B200 },
145 { "300", SPEED, C_FLAG, 0, B300 },
146 { "600", SPEED, C_FLAG, 0, B600 },
147 { "1200", SPEED, C_FLAG, 0, B1200 },
148 { "1800", SPEED, C_FLAG, 0, B1800 },
149 { "2400", SPEED, C_FLAG, 0, B2400 },
150 { "4800", SPEED, C_FLAG, 0, B4800 },
151 { "9600", SPEED, C_FLAG, 0, B9600 },
152 { "19200", SPEED, C_FLAG, 0, B19200 },
153 { "38400", SPEED, C_FLAG, 0, B38400 },
154
155 #ifdef TIOCSWINSZ
156 { "rows", WIND, W_SIZE, IG, 0, 24, C("\an\a is the number of lines for display") },
157 { "cols", WIND, W_SIZE, IG, 1, 80, C("\an\a is the number of columns for display") },
158 { "columns", WIND, W_SIZE, IG, 1, 80, C("Same as \bcols\b") },
159 #endif
160 { "intr", CHAR, T_CHAR, SS, VINTR, 'C', C("Send an interrupt signal") },
161 { "quit", CHAR, T_CHAR, SS, VQUIT, '|', C("Send a quit signal") },
162 { "erase", CHAR, T_CHAR, SS, VERASE, 'H', C("Erase the last character entered") },
163 { "kill", CHAR, T_CHAR, NL|SS, VKILL, 'U', C("Erase the current line") },
164 { "eof", CHAR, T_CHAR, SS, VEOF, 'D', C("Send an end of file") },
165 #ifdef VEOL2
166 { "eol2", CHAR, T_CHAR, US, VEOL2, _POSIX_VDISABLE, C("Alternate character to end the line") },
167 #endif /* VEOL2 */
168 #ifdef VSWTCH
169 { "swtch", CHAR, T_CHAR, US, VSWTCH, _POSIX_VDISABLE, C("Switch to a different shell layer") },
170 #endif /* VSWTCH */
171 { "eol", CHAR, T_CHAR, NL|US, VEOL, _POSIX_VDISABLE, C("End the line") },
172 #ifdef VSTART
173 { "start", CHAR, T_CHAR, SS, VSTART, 'Q', C("Restart the output after stopping it") },
174 #endif /* VSTART */
175 #ifdef VSTOP
176 { "stop", CHAR, T_CHAR, SS, VSTOP, 'S', C("Stop the output") },
177 #endif /* VSTOP */
178 #ifdef VDSUSP
179 { "dsusp", CHAR, T_CHAR, SS, VDSUSP, 'Y', C("Send a terminal stop signal after flushing the input") },
180 #endif /* VDSUSP */
181 #ifdef VSUSP
182 { "susp", CHAR, T_CHAR, NL|SS, VSUSP, 'Z', C("Send a terminal stop signal") },
183 #endif /* VSUSP */
184 #ifdef VREPRINT
185 { "rprnt", CHAR, T_CHAR, SS, VREPRINT, 'R', C("Redraw the current line") },
186 #endif /* VREPRINT */
187 #ifdef VDISCARD
188 { "flush", CHAR, T_CHAR, SS, VDISCARD, 'O', C("Discard output") },
189 #endif /* VDISCARD */
190 #ifdef VWERASE
191 { "werase", CHAR, T_CHAR, SS, VWERASE, 'W', C("Erase the last word entered") },
192 #endif /* VWERASE */
193 #ifdef VLNEXT
194 { "lnext", CHAR, T_CHAR, NL|SS, VLNEXT, 'V', C("Enter the next input character literally") },
195 #endif /* VLNEXT */
196
197 #if _mem_c_line_termios
198 { "line", NUM, C_LINE, 0, 0, 0, C("Line discipline number") },
199 #endif
200 { "min", NUM, T_CHAR, 0, VMIN, 0, C("Mininmum number of characters to read in raw mode") },
201 { "time", NUM, T_CHAR, 0, VTIME, 0, C("Number of .1 second intervals with raw mode") },
202
203 { "parenb", BIT, C_FLAG, 0, PARENB, PARENB, C("Enable (disable) parity generation and detection") },
204 { "parodd", BIT, C_FLAG, 0, PARODD, PARODD, C("Use odd (even) parity") },
205 #ifdef PAREXT
206 { "parext", BIT, C_FLAG, 0, PAREXT, PAREXT },
207 #endif /* PAREXT */
208 #ifdef CREAD
209 { "cread", BIT, C_FLAG, SS, CREAD, CREAD, C("Enable (disable) input") },
210 #endif /* CREAD */
211 { "cs5", SIZE, C_FLAG, 0, CSIZE, CS5 , C("Char size 5") },
212 { "cs6", SIZE, C_FLAG, 0, CSIZE, CS6 , C("Char size 6") },
213 { "cs7", SIZE, C_FLAG, 0, CSIZE, CS7 , C("Char size 7") },
214 { "cs8", SIZE, C_FLAG, 0, CSIZE, CS8 , C("Char size 8") },
215 { "hupcl", BIT, C_FLAG, 0, HUPCL, HUPCL, C("Hangup (do not hangup) connection on last close") },
216 { "hup", BIT, C_FLAG, IG, HUPCL, HUPCL, C("Same as \bhupcl\b") },
217 { "cstopb", BIT, C_FLAG, 0, CSTOPB, CSTOPB, C("Use two (one) stop bits") },
218 #ifdef CRTSCTS
219 { "crtscts", BIT, C_FLAG, 0, CRTSCTS, CRTSCTS, C("Enable (disable) RTS/CTS handshaking") },
220 #endif /* CRTSCTS */
221 { "clocal", BIT, C_FLAG, NL, CLOCAL, CLOCAL, C("Disable (enable) modem control signals") },
222
223 { "ignbrk", BIT, I_FLAG, US, IGNBRK, IGNBRK, C("Ignore (do not ignore) break characters") },
224 { "brkint", BIT, I_FLAG, SS, BRKINT, BRKINT, C("Generate (do not generate) INTR signal on break") },
225 { "ignpar", BIT, I_FLAG, 0, IGNPAR, IGNPAR, C("Ignore (do not ignore) characters with parity errors") },
226 { "parmrk", BIT, I_FLAG, 0, PARMRK, PARMRK, C("Mark (do not mark) parity errors") },
227 { "inpck", BIT, I_FLAG, 0, INPCK, INPCK, C("Enable (disable) input parity checking") },
228 { "istrip", BIT, I_FLAG, 0, ISTRIP, ISTRIP, C("Clear (do not clear) high bit of input characters") },
229 { "inlcr", BIT, I_FLAG, US, INLCR, INLCR, C("Translate (do not translate) carriage return to newline") },
230 { "igncr", BIT, I_FLAG, US, IGNCR, IGNCR, C("Ignore (do not ignore) carriage return") },
231 #ifdef IUCLC
232 { "iuclc", BIT, I_FLAG, US, IUCLC, IUCLC, C("Map (do not map) upper-case to lower case") },
233 #endif /* IUCLC */
234 { "ixon", BIT, I_FLAG, 0, IXON, IXON, C("Enable (disable) XON/XOFF flow control. \bstop\b character stops output") },
235 #ifdef IXANY
236 { "ixany", BIT, I_FLAG, US, IXANY, IXANY, C("Any character (only start character) can restart output.") },
237 { "decctlq", BIT, I_FLAG, IG, IXANY, 0, C("Same as \b-ixany\b") },
238 #endif /* IXANY */
239 { "ixoff", BIT, I_FLAG, US, IXOFF, IXOFF, C("Disable (enable) XON/XOFF flow control") },
240 #ifdef IMAXBEL
241 { "imaxbel", BIT, I_FLAG, SS, IMAXBEL, IMAXBEL, C("Beep (do not beep) if a character arrives with full input buffer") },
242 #endif /* IMAXBEL */
243 { "icrnl", BIT, I_FLAG, NL|SS, ICRNL, ICRNL, C("Translate (do not translate) carriage return to newline") },
244
245 { "isig", BIT, L_FLAG, SS, ISIG, ISIG, C("Enable (disable) \bintr\b, \bquit\b, and \bsusp\b special characters") },
246 { "icanon", BIT, L_FLAG, SS, ICANON, ICANON, C("Enable (disable) \berase\b, \bkill\b, \bwerase\b, and \brprnt\b special characters") },
247 { "icannon", BIT, L_FLAG, SS, ICANON, ICANON },
248 #ifdef IEXTEN
249 { "iexten", BIT, L_FLAG, SS, IEXTEN, IEXTEN, C("Enable (disable) non-POSIX special characters") },
250 #endif /* IEXTEN */
251 { "echo", BIT, L_FLAG, SS, ECHO|ECHONL, ECHO|ECHONL, C("Echo (do not echo) input characters") },
252 { "echoe", BIT, L_FLAG, SS, ECHOE, ECHOE, C("Echo (do not echo) erase characters as backspace-space-backspace") },
253 { "echok", BIT, L_FLAG, SS, ECHOK, ECHOK, C("Echo (do not echo) a newline after a kill character") },
254 #ifdef ECHOKE
255 { "echoke", BIT, L_FLAG, SS, ECHOKE, ECHOKE, C("Echo (do not echo) a newline after a kill character") },
256 #endif
257 { "lfkc", BIT, L_FLAG, IG, ECHOK, ECHOK, C("Same as \bechok\b (\b-echok\b); obsolete") },
258 { "echonl", BIT, L_FLAG, SS, ECHONL, ECHONL,"Echo (do not echo) newline even if not echoing other character" },
259 #ifdef ECHOCTL
260 { "echoctl", BIT, L_FLAG, SS, ECHOCTL, ECHOCTL, C("Echo (do not echo) control characters as \b^\b\ac\a") },
261 #else
262 #define ECHOCTL 0
263 #endif /* ECHOCTL */
264 #ifdef ECHOPRT
265 { "echoprt", BIT, L_FLAG, US, ECHOPRT, ECHOPRT, C("Echo (do not echo) erased characters backward, between '\\' and '/'") },
266 #else
267 #define ECHOPRT 0
268 #endif /* ECHOPRT */
269 #ifdef XCASE
270 { "xcase", BIT, L_FLAG, US, XCASE, XCASE, C("Enable (disable) \bicanon\b uppercase as lowercase with '\\' prefix") },
271 #endif /* XCASE */
272 #ifdef DEFECHO
273 { "defecho", BIT, L_FLAG, 0, DEFECHO, DEFECHO },
274 #endif /* DEFECHO */
275 #ifdef FLUSHO
276 { "flusho", BIT, L_FLAG, 0, FLUSHO, FLUSHO, C("Discard (do not discard) written data. Cleared by subsequent input") },
277 #endif /* FLUSHO */
278 #ifdef PENDIN
279 { "pendin", BIT, L_FLAG, 0, PENDIN, PENDIN, C("Redisplay pending input at next read and then automatically clear \bpendin\b") },
280 #endif /* PENDIN */
281 { "noflsh", BIT, L_FLAG, US, NOFLSH, NOFLSH, C("Disable (enable) flushing after \bintr\b and \bquit\b special characters") },
282 #ifdef TOSTOP
283 { "tostop", BIT, L_FLAG, NL|US, TOSTOP, TOSTOP, C("Stop (do not stop) background jobs that try to write to the terminal") },
284 #endif /* TOSTOP */
285 #ifdef OLCUC
286 { "olcuc", BIT, O_FLAG, US, OLCUC, OLCUC, C("Translate (do not translate) lowercase characters to uppercase") },
287 #endif /* OLCUC */
288 #ifdef ONLCR
289 { "onlcr", BIT, O_FLAG, SS, ONLCR, ONLCR, C("Translate (do not translate) newline to carriage return-newline") },
290 #endif /* ONLCR */
291 #ifdef ONLRET
292 { "onlret", BIT, O_FLAG, US, ONLRET, ONLRET, C("Newline performs (does not perform) a carriage return") },
293 #endif /* ONLRET */
294 #ifdef OCRNL
295 { "ocrnl", BIT, O_FLAG, US, OCRNL, OCRNL, C("Translate (do not translate) carriage return to newline") },
296 #endif /* OCRNL */
297 #ifdef ONOCR
298 { "onocr", BIT, O_FLAG, US, ONOCR, ONOCR, C("Do not (do) print carriage returns in the first column") },
299 #endif /* ONOCR */
300 #ifdef OFILL
301 { "ofill", BIT, O_FLAG, US, OFILL, OFILL, C("Use fill characters (use timing) for delays") },
302 #endif /* OFILL */
303 #ifdef OFDEL
304 { "ofdel", BIT, O_FLAG, US, OFDEL, OFDEL, C("Use DEL (NUL) as fill characters for delays") },
305 #endif /* OFDEL */
306 { "opost", BIT, O_FLAG, SS, OPOST, OPOST, C(" Postprocess (do not postprocess) output") },
307 #ifdef CRDLY
308 { "cr0", BITS, O_FLAG, IG|SS, CRDLY, CR0 },
309 { "cr1", BITS, O_FLAG, US, CRDLY, CR1 },
310 { "cr2", BITS, O_FLAG, US, CRDLY, CR2 },
311 { "cr3", BITS, O_FLAG, US, CRDLY, CR3 },
312 #endif
313 #ifdef NLDLY
314 { "nl0", BITS, O_FLAG, IG|US, NLDLY, NL0 },
315 { "nl1", BITS, O_FLAG, US, NLDLY, NL1 },
316 #endif
317 #ifdef TABDLY
318 { "tabs", TABS, O_FLAG, IG, TABDLY, TAB3, C("Preserve (expand to spaces) tabs") },
319 #ifdef TAB0
320 { "tab0", BITS, O_FLAG, IG|SS, TABDLY, TAB0 },
321 #endif
322 #ifdef TAB1
323 { "tab1", BITS, O_FLAG, US, TABDLY, TAB1 },
324 #endif
325 #ifdef TAB2
326 { "tab2", BITS, O_FLAG, US, TABDLY, TAB2 },
327 #endif
328 { "tab3", BITS, O_FLAG, US, TABDLY, TAB3 },
329 #endif
330 #ifdef BSDLY
331 { "bs0", BITS, O_FLAG, IG|SS, BSDLY, BS0 },
332 { "bs1", BITS, O_FLAG, US, BSDLY, BS1 },
333 #endif
334 #ifdef VTDLY
335 { "vt0", BITS, O_FLAG, IG|SS, VTDLY, VT0 },
336 { "vt1", BITS, O_FLAG, US, VTDLY, VT1 },
337 #endif
338 #ifdef FFDLY
339 { "ff0", BITS, O_FLAG, IG|SS, FFDLY, FF0 },
340 { "ff1", BITS, O_FLAG, US, FFDLY, FF1 },
341 #endif
342 { "", MIXED, O_FLAG, NL|IG },
343
344 { "evenp", MIXED, C_FLAG, IG, PARENB, 0, C("Same as \bparenb -parodd cs7\b") },
345 { "oddp", MIXED, C_FLAG, IG, PARODD, 0, C("Same as \bparenb parodd cs7\b") },
346 { "parity", MIXED, C_FLAG, IG, 0, 0, C("Same as parenb \b-parodd cs7\b") },
347 { "ek", MIXED, C_FLAG, IG, 0, 0, C("Reset the \berase\b and \bkill\b special characters to their default values") },
348 { "sane", SANE, C_FLAG, IG, 0, 0, C("Reset all modes to some reasonable values") },
349 { "cooked", COOKED, C_FLAG, IG, 0, 0, C("Disable raw input and output") },
350 { "raw", COOKED, C_FLAG, IG, 0, 0, C("Enable raw input and output") },
351 { "lcase", CASE, C_FLAG, IG, 0 , 0, C("Set \bxcase\b, \biuclc\b, and \bolcuc\b") },
352 { "LCASE", CASE, C_FLAG, IG, 0 , 0, C("Same as \blcase\b") }
353 };
354
355 #if CC_NATIVE == CC_ASCII
356 #define cntl(x) (((x)=='?')?0177:((x)&037))
357 #else
358 #define cntl(x) (((x)=='?')?ccmapc(0177,CC_ASCII,CC_NATIVE):ccmapc(ccmapc(x,CC_NATIVE,CC_ASCII)&037,CC_ASCII,CC_NATIVE))
359 #endif
360
sane(register struct termios * sp)361 static void sane(register struct termios *sp)
362 {
363 register const Tty_t* tp;
364
365 for (tp = Ttable; tp < &Ttable[elementsof(Ttable)]; tp++)
366 if (tp->flags & (SS|US))
367 switch (tp->type)
368 {
369 case BIT:
370 case BITS:
371 switch (tp->field)
372 {
373 case C_FLAG:
374 if (tp->flags & SS)
375 sp->c_cflag |= tp->mask;
376 else
377 sp->c_cflag &= ~tp->mask;
378 break;
379 case I_FLAG:
380 if (tp->flags & SS)
381 sp->c_iflag |= tp->mask;
382 else
383 sp->c_iflag &= ~tp->mask;
384 break;
385 case O_FLAG:
386 if (tp->flags & SS)
387 sp->c_oflag |= tp->mask;
388 else
389 sp->c_oflag &= ~tp->mask;
390 break;
391 case L_FLAG:
392 if (tp->flags & SS)
393 sp->c_lflag |= tp->mask;
394 else
395 sp->c_lflag &= ~tp->mask;
396 break;
397 }
398 break;
399 case CHAR:
400 sp->c_cc[tp->mask] = cntl(tp->val);
401 break;
402 }
403 }
404
gin(char * arg,struct termios * sp)405 static int gin(char *arg,struct termios *sp)
406 {
407 register int i;
408 if(*arg++ != ':')
409 return(0);
410 sp->c_iflag = strtol(arg,&arg,16);
411 if(*arg++ != ':')
412 return(0);
413 sp->c_oflag = strtol(arg,&arg,16);
414 if(*arg++ != ':')
415 return(0);
416 sp->c_cflag = strtol(arg,&arg,16);
417 if(*arg++ != ':')
418 return(0);
419 sp->c_lflag = strtol(arg,&arg,16);
420 if(*arg++ != ':')
421 return(0);
422 for(i=0;i< NCCS; i++)
423 {
424 sp->c_cc[i] = strtol(arg,&arg,16);
425 if(*arg++ != ':')
426 return(0);
427 }
428 #if _mem_c_line_termios
429 sp->c_line =
430 #endif
431 strtol(arg,&arg,16);
432 if(*arg++ != ':')
433 return(0);
434 i = strtol(arg,&arg,16);
435 if(*arg++ != ':')
436 return(0);
437 cfsetispeed(sp, i);
438 i = strtol(arg,&arg,16);
439 if(*arg++ != ':')
440 return(0);
441 cfsetospeed(sp, i);
442 if(*arg)
443 return(0);
444 return(1);
445 }
446
gout(struct termios * sp)447 static void gout(struct termios *sp)
448 {
449 register int i;
450 sfprintf(sfstdout,":%x",sp->c_iflag);
451 sfprintf(sfstdout,":%x",sp->c_oflag);
452 sfprintf(sfstdout,":%x",sp->c_cflag);
453 sfprintf(sfstdout,":%x",sp->c_lflag);
454 for(i=0;i< NCCS; i++)
455 sfprintf(sfstdout,":%x",sp->c_cc[i]);
456 #if _mem_c_line_termios
457 sfprintf(sfstdout,":%x", sp->c_line);
458 #else
459 sfprintf(sfstdout,":%x", 0);
460 #endif
461 sfprintf(sfstdout,":%x",cfgetispeed(sp));
462 sfprintf(sfstdout,":%x",cfgetospeed(sp));
463 sfprintf(sfstdout,":\n");
464 }
465
output(struct termios * sp,int flags)466 static void output(struct termios *sp, int flags)
467 {
468 const Tty_t *tp;
469 struct termios tty;
470 register int delim = ' ';
471 register int i,off,off2;
472 char schar[2];
473 unsigned int ispeed = cfgetispeed(sp);
474 unsigned int ospeed = cfgetospeed(sp);
475 if(flags&G_FLAG)
476 {
477 gout(sp);
478 return;
479 }
480 tty = *sp;
481 sane(&tty);
482 for(i=0; i < elementsof(Ttable); i++)
483 {
484 tp= &Ttable[i];
485 if(tp->flags&IG)
486 {
487 if(tp->flags&NL)
488 sfputc(sfstdout,'\n');
489 continue;
490 }
491 switch(tp->type)
492 {
493 case BIT:
494 case BITS:
495 off = off2 = 1;
496 switch(tp->field)
497 {
498 case C_FLAG:
499 if(sp->c_cflag&tp->mask)
500 off = 0;
501 if(tty.c_cflag&tp->mask)
502 off2 = 0;
503 break;
504 case I_FLAG:
505 if(sp->c_iflag&tp->mask)
506 off = 0;
507 if(tty.c_iflag&tp->mask)
508 off2 = 0;
509 break;
510 case O_FLAG:
511 if((sp->c_oflag&tp->mask)==tp->val)
512 off = 0;
513 if(tty.c_oflag&tp->mask)
514 off2 = 0;
515 break;
516 case L_FLAG:
517 if(sp->c_lflag&tp->mask)
518 off = 0;
519 if(tty.c_lflag&tp->mask)
520 off2 = 0;
521 }
522 if(tp->flags&NL)
523 delim = '\n';
524 if(!flags && off==off2)
525 continue;
526 if(!off)
527 sfprintf(sfstdout,"%s%c",tp->name,delim);
528 else if(tp->type==BIT)
529 sfprintf(sfstdout,"-%s%c",tp->name,delim);
530 delim = ' ';
531 break;
532
533 case CHAR:
534 off = sp->c_cc[tp->mask];
535 if(tp->flags&NL)
536 delim = '\n';
537 if(!flags && off==(unsigned char)tty.c_cc[tp->mask])
538 continue;
539 if(off==_POSIX_VDISABLE)
540 sfprintf(sfstdout,"%s = <undef>;%c",tp->name,delim);
541 else if(isprint(off&0xff))
542 sfprintf(sfstdout,"%s = %c;%c",tp->name,off,delim);
543 else
544 #if CC_NATIVE == CC_ASCII
545 sfprintf(sfstdout,"%s = ^%c;%c",tp->name,off==0177?'?':(off^0100),delim);
546 #else
547 {
548 off = ccmapc(off, CC_NATIVE, CC_ASCII);
549 sfprintf(sfstdout,"%s = ^%c;%c",tp->name,off==0177?'?':ccmapc(off^0100,CC_ASCII,CC_NATIVE),delim);
550 }
551 #endif
552 delim = ' ';
553 break;
554 case SIZE:
555 if((sp->c_cflag&CSIZE)!=tp->mask)
556 continue;
557 if(flags || (sp->c_cflag&CSIZE) != (tty.c_cflag&CSIZE))
558 sfprintf(sfstdout,"%s ",tp->name);
559 break;
560 case SPEED:
561 if(tp->mask==ispeed)
562 {
563 if(ispeed!=ospeed)
564 schar[0]='i';
565 else
566 schar[0]=0;
567 }
568 else if(tp->mask==ospeed)
569 schar[0]='o';
570 else
571 continue;
572 schar[1] = 0;
573 #ifdef TIOCSWINSZ
574 {
575 struct winsize win;
576 off = ioctl(0,TIOCGWINSZ,&win);
577 if(off>=0)
578 sfprintf(sfstdout,"%sspeed %s baud; rows %d; columns %d;\n",schar,tp->name,win.ws_row,win.ws_col);
579 }
580 if(off<0)
581 #endif
582 sfprintf(sfstdout,"%sspeed %s baud;\n",schar,tp->name);
583 }
584 }
585 if(delim=='\n')
586 sfputc(sfstdout,'\n');
587 }
588
lookup(const char * name)589 static const Tty_t *lookup(const char *name)
590 {
591 register int i;
592 for(i=0; i < elementsof(Ttable); i++)
593 {
594 if(strcmp(Ttable[i].name,name)==0)
595 return(&Ttable[i]);
596 }
597 return(0);
598
599 }
600
getspeed(unsigned long val)601 static const Tty_t *getspeed(unsigned long val)
602 {
603 register int i;
604 for(i=0; i < elementsof(Ttable); i++)
605 {
606 if(Ttable[i].type==SPEED && Ttable[i].mask==val)
607 return(&Ttable[i]);
608 }
609 return(0);
610 }
611
gettchar(register const char * cp)612 static int gettchar(register const char *cp)
613 {
614 if(*cp==0)
615 return(-1);
616 if(cp[1]==0)
617 return((unsigned)cp[0]);
618 if(*cp=='^' && cp[1] && cp[2]==0)
619 {
620 switch(cp[1])
621 {
622 case '-':
623 return(-1);
624 default:
625 return(cntl(cp[1]));
626 }
627 }
628 if(streq(cp,"undef") || streq(cp,"<undef>"))
629 return(-1);
630 return(*((unsigned char*)cp));
631 }
632
set(char * argv[],struct termios * sp)633 static void set(char *argv[], struct termios *sp)
634 {
635 const Tty_t *tp;
636 register int c,off;
637 char *cp;
638 char *ep;
639 while(cp = *argv++)
640 {
641 off = 0;
642 if(*cp=='-')
643 {
644 cp++;
645 off=1;
646 }
647 if(!(tp=lookup(cp)) || (off && (tp->type!=BIT) && (tp->type!=TABS)))
648 error(ERROR_exit(1),"%s: unknown mode",cp);
649 switch(tp->type)
650 {
651 case CHAR:
652 if(off)
653 error(ERROR_exit(1),"%s: unknown mode",cp);
654 if(!*argv)
655 error(ERROR_exit(1),"missing argument to %s",cp);
656 c = gettchar(*argv++);
657 if(c>=0)
658 sp->c_cc[tp->mask] = c;
659 else
660 sp->c_cc[tp->mask] = _POSIX_VDISABLE;
661 break;
662 case BIT: case BITS:
663 switch(tp->field)
664 {
665 case C_FLAG:
666 if(off)
667 sp->c_cflag &= ~tp->mask;
668 else
669 sp->c_cflag |= tp->mask;
670 break;
671 case I_FLAG:
672 if(off)
673 sp->c_iflag &= ~tp->mask;
674 else
675 sp->c_iflag |= tp->mask;
676 break;
677 case O_FLAG:
678 sp->c_oflag &= ~tp->mask;
679 sp->c_oflag |= tp->val;
680 break;
681 case L_FLAG:
682 if(off)
683 sp->c_lflag &= ~tp->mask;
684 else
685 sp->c_lflag |= tp->mask;
686 break;
687 }
688 break;
689 case TABS:
690 sp->c_oflag &= ~tp->mask;
691 if(off)
692 sp->c_oflag |= tp->val;
693 break;
694 #ifdef TIOCSWINSZ
695 case WIND:
696 {
697 struct winsize win;
698 int n;
699 if(ioctl(0,TIOCGWINSZ,&win)<0)
700 error(ERROR_system(1),"cannot set %s",tp->name);
701 if(!(cp= *argv))
702 {
703 sfprintf(sfstdout,"%d\n",tp->mask?win.ws_col:win.ws_row);
704 break;
705 }
706 argv++;
707 n=strtol(cp,&cp,10);
708 if(*cp)
709 error(ERROR_system(1),"%d: invalid number of %s",argv[-1],tp->name);
710 if(tp->mask)
711 win.ws_col = n;
712 else
713 win.ws_row = n;
714 if(ioctl(0,TIOCSWINSZ,&win)<0)
715 error(ERROR_system(1),"cannot set %s",tp->name);
716 break;
717 }
718 #endif
719 case NUM:
720 cp = *argv;
721 if (!cp)
722 {
723 if (tp->field == C_SPEED)
724 {
725 if (tp = getspeed(*tp->name == 'i' ? cfgetispeed(sp) : cfgetospeed(sp)))
726 sfprintf(sfstdout, "%s\n", tp->name);
727 break;
728 }
729 error(ERROR_exit(1), "%s: missing numeric argument", tp->name);
730 }
731 argv++;
732 c = (int)strtol(cp, &ep, 10);
733 if (*ep)
734 error(ERROR_exit(1), "%s: %s: numeric argument expected", tp->name, cp);
735 switch (tp->field)
736 {
737 #if _mem_c_line_termios
738 case C_LINE:
739 sp->c_line = c;
740 break;
741 #endif
742 case C_SPEED:
743 if(getspeed(c))
744 {
745 if (*tp->name != 'o')
746 cfsetispeed(sp, c);
747 if (*tp->name != 'i')
748 cfsetospeed(sp, c);
749 }
750 else
751 error(ERROR_exit(1), "%s: %s: invalid speed", tp->name, cp);
752 break;
753 case T_CHAR:
754 sp->c_cc[tp->mask] = c;
755 break;
756 }
757 break;
758 case SPEED:
759 cfsetospeed(sp, tp->mask);
760 cfsetispeed(sp, tp->mask);
761 break;
762 case SIZE:
763 sp->c_cflag &= ~CSIZE;
764 sp->c_cflag |= tp->mask;
765 break;
766 case SANE:
767 sane(sp);
768 break;
769 #if defined(OLCUC) && defined(IUCLC)
770 case CASE:
771 if(off)
772 {
773 sp->c_iflag |= IUCLC;
774 sp->c_oflag |= OLCUC;
775 }
776 else
777 {
778 sp->c_iflag &= ~IUCLC;
779 sp->c_oflag &= ~OLCUC;
780 }
781 break;
782 #endif /* OLCUC && IUCLC */
783 }
784 }
785 }
786
787
listchars(Sfio_t * sp,int type)788 static void listchars(Sfio_t *sp,int type)
789 {
790 int i,c;
791 c = (type==CHAR?'c':'n');
792 for(i=0; i < elementsof(Ttable); i++)
793 {
794 if(Ttable[i].type==type && *Ttable[i].description)
795 sfprintf(sp,"[+%s \a%c\a?%s.]",Ttable[i].name,c,Ttable[i].description);
796 }
797 }
798
listgroup(Sfio_t * sp,int type,const char * description)799 static void listgroup(Sfio_t *sp,int type, const char *description)
800 {
801 int i;
802 sfprintf(sp,"[+");
803 for(i=0; i < elementsof(Ttable); i++)
804 {
805 if(Ttable[i].type==type)
806 sfprintf(sp,"%s ",Ttable[i].name);
807 }
808 sfprintf(sp,"?%s.]",description);
809 }
810
listmask(Sfio_t * sp,unsigned int mask,const char * description)811 static void listmask(Sfio_t *sp,unsigned int mask,const char *description)
812 {
813 int i;
814 sfprintf(sp,"[+");
815 for(i=0; i < elementsof(Ttable); i++)
816 {
817 if(Ttable[i].mask==mask && Ttable[i].type==BITS)
818 sfprintf(sp,"%s ",Ttable[i].name);
819 }
820 sfprintf(sp,"?%s.]",description);
821 }
822
listfields(Sfio_t * sp,int field)823 static void listfields(Sfio_t *sp,int field)
824 {
825 int i;
826 for(i=0; i < elementsof(Ttable); i++)
827 {
828 if(Ttable[i].field==field && Ttable[i].type==BIT && *Ttable[i].description)
829 sfprintf(sp,"[+%s (-%s)?%s.]",Ttable[i].name,Ttable[i].name,Ttable[i].description);
830 }
831 }
832
listmode(Sfio_t * sp,const char * name)833 static void listmode(Sfio_t *sp,const char *name)
834 {
835 sfprintf(sp,"[+%s?%s.]",name,lookup(name)->description);
836 }
837
infof(Opt_t * op,Sfio_t * sp,const char * s,Optdisc_t * dp)838 static int infof(Opt_t* op, Sfio_t* sp, const char* s, Optdisc_t* dp)
839 {
840 NoP(op);
841 NoP(s);
842 NoP(dp);
843 sfprintf(sp,"[+Control Modes.]{");
844 listfields(sp,C_FLAG);
845 listgroup(sp,SPEED,"Attempt to set input and output baud rate to number given. A value of \b0\b causes immediate hangup");
846 listchars(sp,NUM);
847 listgroup(sp,SIZE,"Number of bits in a character");
848 sfprintf(sp,"}[+Input Modes.]{");
849 listfields(sp,I_FLAG);
850 sfprintf(sp,"}[+Output Modes.]{");
851 listfields(sp,O_FLAG);
852 #ifdef CRDLY
853 listmask(sp,CRDLY,"Carriage return delay style");
854 #endif
855 #ifdef NLDLY
856 listmask(sp,NLDLY,"Newline delay style");
857 #endif
858 #ifdef TABDLY
859 listmask(sp,TABDLY,"Horizontal tab delay style");
860 #endif
861 #ifdef BSDLY
862 listmask(sp,BSDLY,"Backspace delay style");
863 #endif
864 #ifdef FFDLY
865 listmask(sp,FFDLY,"Form feed delay style");
866 #endif
867 #ifdef VTDLY
868 listmask(sp,VTDLY,"Vertical tab delay style");
869 #endif
870 sfprintf(sp,"}[+Local Modes.]{");
871 listfields(sp,L_FLAG);
872 sfprintf(sp,"}[+Control Assignments.?If \ac\a is \bundef\b or an empty "
873 "string then the control assignment is disabled.]{");
874 listchars(sp,WIND);
875 listchars(sp,CHAR);
876 sfprintf(sp,"}[+Combination Modes.]{");
877 listmode(sp,"ek");
878 listmode(sp,"evenp");
879 listmode(sp,"lcase");
880 listmode(sp,"oddp");
881 listmode(sp,"parity");
882 listmode(sp,"sane");
883 listmode(sp,"tabs");
884 listmode(sp,"LCASE");
885 sfputc(sp,'}');
886 return(1);
887 }
888
889 #ifndef _lib_tcgetpgrp
890 # ifdef TIOCGPGRP
891 static int _i_;
892 # define tcgetpgrp(a) (ioctl(a, TIOCGPGRP, &_i_)>=0?_i_:-1)
893 # else
894 # define tcgetpgrp(a) (-1)
895 # endif /* TIOCGPGRP */
896 #endif /* _lib_tcgetpgrp */
897
898 int
b_stty(int argc,char ** argv,Shbltin_t * context)899 b_stty(int argc, char** argv, Shbltin_t* context)
900 {
901 struct termios tty;
902 register int n;
903 register int flags = 0;
904 int fd = 0;
905 const Tty_t* tp;
906 Optdisc_t disc;
907
908 cmdinit(argc, argv, context, ERROR_CATALOG, ERROR_INTERACTIVE);
909 memset(&disc, 0, sizeof(disc));
910 disc.version = OPT_VERSION;
911 disc.infof = infof;
912 opt_info.disc = &disc;
913 for (;;)
914 {
915 switch (n = optget(argv, usage))
916 {
917 case 'f':
918 fd = (int)opt_info.num;
919 continue;
920 case 'a':
921 case 'g':
922 case 't':
923 if (!opt_info.offset || !argv[opt_info.index][opt_info.offset])
924 {
925 switch (n)
926 {
927 case 'a':
928 flags |= A_FLAG;
929 break;
930 case 'g':
931 flags |= G_FLAG;
932 break;
933 case 't':
934 flags |= T_FLAG;
935 break;
936 }
937 continue;
938 }
939 /*FALLTHROUGH*/
940 case ':':
941 if (!opt_info.offset)
942 error(2, "%s", opt_info.arg);
943 else if (!(tp = lookup(argv[opt_info.index]+1)) || (tp->type != BIT && tp->type != TABS))
944 error(ERROR_exit(1), "%s: unknown mode", argv[opt_info.index]);
945 break;
946 case '?':
947 error(ERROR_usage(2), "%s", opt_info.arg);
948 break;
949 }
950 break;
951 }
952 argv += opt_info.index;
953 if (error_info.errors || (flags && *argv) || (flags&(flags-1)))
954 error(ERROR_usage(2), "%s", optusage(NiL));
955 if (tcgetattr(fd, &tty) < 0)
956 error(ERROR_system(1), "not a tty");
957 if (flags & T_FLAG)
958 sfprintf(sfstdout, "%d\n", tcgetpgrp(0));
959 else if (*argv)
960 {
961 if (!argv[1] && **argv == ':')
962 gin(*argv, &tty);
963 else
964 set(argv, &tty);
965 if (tcsetattr(0, TCSANOW, &tty) < 0)
966 error(ERROR_system(1), "cannot set tty");
967 }
968 else
969 output(&tty, flags);
970 return error_info.errors;
971 }
972