1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /* stty -- change and print terminal line settings
|
---|
3 | Copyright (C) 1990-1999 Free Software Foundation, Inc.
|
---|
4 |
|
---|
5 | Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
|
---|
6 | */
|
---|
7 | /* Usage: stty [-ag] [-F device] [setting...]
|
---|
8 |
|
---|
9 | Options:
|
---|
10 | -a Write all current settings to stdout in human-readable form.
|
---|
11 | -g Write all current settings to stdout in stty-readable form.
|
---|
12 | -F Open and use the specified device instead of stdin
|
---|
13 |
|
---|
14 | If no args are given, write to stdout the baud rate and settings that
|
---|
15 | have been changed from their defaults. Mode reading and changes
|
---|
16 | are done on the specified device, or stdin if none was specified.
|
---|
17 |
|
---|
18 | David MacKenzie <djm@gnu.ai.mit.edu>
|
---|
19 |
|
---|
20 | Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
|
---|
21 |
|
---|
22 | */
|
---|
23 |
|
---|
24 | #include "libbb.h"
|
---|
25 |
|
---|
26 | #ifndef _POSIX_VDISABLE
|
---|
27 | # define _POSIX_VDISABLE ((unsigned char) 0)
|
---|
28 | #endif
|
---|
29 |
|
---|
30 | #define Control(c) ((c) & 0x1f)
|
---|
31 | /* Canonical values for control characters */
|
---|
32 | #ifndef CINTR
|
---|
33 | # define CINTR Control('c')
|
---|
34 | #endif
|
---|
35 | #ifndef CQUIT
|
---|
36 | # define CQUIT 28
|
---|
37 | #endif
|
---|
38 | #ifndef CERASE
|
---|
39 | # define CERASE 127
|
---|
40 | #endif
|
---|
41 | #ifndef CKILL
|
---|
42 | # define CKILL Control('u')
|
---|
43 | #endif
|
---|
44 | #ifndef CEOF
|
---|
45 | # define CEOF Control('d')
|
---|
46 | #endif
|
---|
47 | #ifndef CEOL
|
---|
48 | # define CEOL _POSIX_VDISABLE
|
---|
49 | #endif
|
---|
50 | #ifndef CSTART
|
---|
51 | # define CSTART Control('q')
|
---|
52 | #endif
|
---|
53 | #ifndef CSTOP
|
---|
54 | # define CSTOP Control('s')
|
---|
55 | #endif
|
---|
56 | #ifndef CSUSP
|
---|
57 | # define CSUSP Control('z')
|
---|
58 | #endif
|
---|
59 | #if defined(VEOL2) && !defined(CEOL2)
|
---|
60 | # define CEOL2 _POSIX_VDISABLE
|
---|
61 | #endif
|
---|
62 | /* ISC renamed swtch to susp for termios, but we'll accept either name */
|
---|
63 | #if defined(VSUSP) && !defined(VSWTCH)
|
---|
64 | # define VSWTCH VSUSP
|
---|
65 | # define CSWTCH CSUSP
|
---|
66 | #endif
|
---|
67 | #if defined(VSWTCH) && !defined(CSWTCH)
|
---|
68 | # define CSWTCH _POSIX_VDISABLE
|
---|
69 | #endif
|
---|
70 |
|
---|
71 | /* SunOS 5.3 loses (^Z doesn't work) if 'swtch' is the same as 'susp'.
|
---|
72 | So the default is to disable 'swtch.' */
|
---|
73 | #if defined(__sparc__) && defined(__svr4__)
|
---|
74 | # undef CSWTCH
|
---|
75 | # define CSWTCH _POSIX_VDISABLE
|
---|
76 | #endif
|
---|
77 |
|
---|
78 | #if defined(VWERSE) && !defined(VWERASE) /* AIX-3.2.5 */
|
---|
79 | # define VWERASE VWERSE
|
---|
80 | #endif
|
---|
81 | #if defined(VDSUSP) && !defined(CDSUSP)
|
---|
82 | # define CDSUSP Control('y')
|
---|
83 | #endif
|
---|
84 | #if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
|
---|
85 | # define VREPRINT VRPRNT
|
---|
86 | #endif
|
---|
87 | #if defined(VREPRINT) && !defined(CRPRNT)
|
---|
88 | # define CRPRNT Control('r')
|
---|
89 | #endif
|
---|
90 | #if defined(VWERASE) && !defined(CWERASE)
|
---|
91 | # define CWERASE Control('w')
|
---|
92 | #endif
|
---|
93 | #if defined(VLNEXT) && !defined(CLNEXT)
|
---|
94 | # define CLNEXT Control('v')
|
---|
95 | #endif
|
---|
96 | #if defined(VDISCARD) && !defined(VFLUSHO)
|
---|
97 | # define VFLUSHO VDISCARD
|
---|
98 | #endif
|
---|
99 | #if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
|
---|
100 | # define VFLUSHO VFLUSH
|
---|
101 | #endif
|
---|
102 | #if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
|
---|
103 | # define ECHOCTL CTLECH
|
---|
104 | #endif
|
---|
105 | #if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
|
---|
106 | # define ECHOCTL TCTLECH
|
---|
107 | #endif
|
---|
108 | #if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
|
---|
109 | # define ECHOKE CRTKIL
|
---|
110 | #endif
|
---|
111 | #if defined(VFLUSHO) && !defined(CFLUSHO)
|
---|
112 | # define CFLUSHO Control('o')
|
---|
113 | #endif
|
---|
114 | #if defined(VSTATUS) && !defined(CSTATUS)
|
---|
115 | # define CSTATUS Control('t')
|
---|
116 | #endif
|
---|
117 |
|
---|
118 | /* Which speeds to set */
|
---|
119 | enum speed_setting {
|
---|
120 | input_speed, output_speed, both_speeds
|
---|
121 | };
|
---|
122 |
|
---|
123 | /* Which member(s) of 'struct termios' a mode uses */
|
---|
124 | enum {
|
---|
125 | /* Do NOT change the order or values, as mode_type_flag()
|
---|
126 | * depends on them */
|
---|
127 | control, input, output, local, combination
|
---|
128 | };
|
---|
129 |
|
---|
130 | static const char evenp [] ALIGN1 = "evenp";
|
---|
131 | static const char raw [] ALIGN1 = "raw";
|
---|
132 | static const char stty_min [] ALIGN1 = "min";
|
---|
133 | static const char stty_time [] ALIGN1 = "time";
|
---|
134 | static const char stty_swtch[] ALIGN1 = "swtch";
|
---|
135 | static const char stty_eol [] ALIGN1 = "eol";
|
---|
136 | static const char stty_eof [] ALIGN1 = "eof";
|
---|
137 | static const char parity [] ALIGN1 = "parity";
|
---|
138 | static const char stty_oddp [] ALIGN1 = "oddp";
|
---|
139 | static const char stty_nl [] ALIGN1 = "nl";
|
---|
140 | static const char stty_ek [] ALIGN1 = "ek";
|
---|
141 | static const char stty_sane [] ALIGN1 = "sane";
|
---|
142 | static const char cbreak [] ALIGN1 = "cbreak";
|
---|
143 | static const char stty_pass8[] ALIGN1 = "pass8";
|
---|
144 | static const char litout [] ALIGN1 = "litout";
|
---|
145 | static const char cooked [] ALIGN1 = "cooked";
|
---|
146 | static const char decctlq [] ALIGN1 = "decctlq";
|
---|
147 | static const char stty_tabs [] ALIGN1 = "tabs";
|
---|
148 | static const char stty_lcase[] ALIGN1 = "lcase";
|
---|
149 | static const char stty_LCASE[] ALIGN1 = "LCASE";
|
---|
150 | static const char stty_crt [] ALIGN1 = "crt";
|
---|
151 | static const char stty_dec [] ALIGN1 = "dec";
|
---|
152 |
|
---|
153 | /* Flags for 'struct mode_info' */
|
---|
154 | #define SANE_SET 1 /* Set in 'sane' mode */
|
---|
155 | #define SANE_UNSET 2 /* Unset in 'sane' mode */
|
---|
156 | #define REV 4 /* Can be turned off by prepending '-' */
|
---|
157 | #define OMIT 8 /* Don't display value */
|
---|
158 |
|
---|
159 | /* Each mode */
|
---|
160 | struct mode_info {
|
---|
161 | const char *const name; /* Name given on command line */
|
---|
162 | const unsigned char type; /* Which structure element to change */
|
---|
163 | const unsigned char flags; /* Setting and display options */
|
---|
164 | /* were using short here, but ppc32 was unhappy: */
|
---|
165 | const tcflag_t mask; /* Other bits to turn off for this mode */
|
---|
166 | const tcflag_t bits; /* Bits to set for this mode */
|
---|
167 | };
|
---|
168 |
|
---|
169 | /* We can optimize it further by using name[8] instead of char *name */
|
---|
170 | /* but beware of "if (info->name == evenp)" checks! */
|
---|
171 | /* Need to replace them with "if (info == &mode_info[EVENP_INDX])" */
|
---|
172 |
|
---|
173 | #define MI_ENTRY(N,T,F,B,M) { N, T, F, M, B }
|
---|
174 |
|
---|
175 | static const struct mode_info mode_info[] = {
|
---|
176 | MI_ENTRY("parenb", control, REV, PARENB, 0 ),
|
---|
177 | MI_ENTRY("parodd", control, REV, PARODD, 0 ),
|
---|
178 | MI_ENTRY("cs5", control, 0, CS5, CSIZE),
|
---|
179 | MI_ENTRY("cs6", control, 0, CS6, CSIZE),
|
---|
180 | MI_ENTRY("cs7", control, 0, CS7, CSIZE),
|
---|
181 | MI_ENTRY("cs8", control, 0, CS8, CSIZE),
|
---|
182 | MI_ENTRY("hupcl", control, REV, HUPCL, 0 ),
|
---|
183 | MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 ),
|
---|
184 | MI_ENTRY("cstopb", control, REV, CSTOPB, 0 ),
|
---|
185 | MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 ),
|
---|
186 | MI_ENTRY("clocal", control, REV, CLOCAL, 0 ),
|
---|
187 | #ifdef CRTSCTS
|
---|
188 | MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 ),
|
---|
189 | #endif
|
---|
190 | MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 ),
|
---|
191 | MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 ),
|
---|
192 | MI_ENTRY("ignpar", input, REV, IGNPAR, 0 ),
|
---|
193 | MI_ENTRY("parmrk", input, REV, PARMRK, 0 ),
|
---|
194 | MI_ENTRY("inpck", input, REV, INPCK, 0 ),
|
---|
195 | MI_ENTRY("istrip", input, REV, ISTRIP, 0 ),
|
---|
196 | MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 ),
|
---|
197 | MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 ),
|
---|
198 | MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 ),
|
---|
199 | MI_ENTRY("ixon", input, REV, IXON, 0 ),
|
---|
200 | MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 ),
|
---|
201 | MI_ENTRY("tandem", input, REV | OMIT, IXOFF, 0 ),
|
---|
202 | #ifdef IUCLC
|
---|
203 | MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 ),
|
---|
204 | #endif
|
---|
205 | #ifdef IXANY
|
---|
206 | MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 ),
|
---|
207 | #endif
|
---|
208 | #ifdef IMAXBEL
|
---|
209 | MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 ),
|
---|
210 | #endif
|
---|
211 | MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 ),
|
---|
212 | #ifdef OLCUC
|
---|
213 | MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 ),
|
---|
214 | #endif
|
---|
215 | #ifdef OCRNL
|
---|
216 | MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 ),
|
---|
217 | #endif
|
---|
218 | #ifdef ONLCR
|
---|
219 | MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 ),
|
---|
220 | #endif
|
---|
221 | #ifdef ONOCR
|
---|
222 | MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 ),
|
---|
223 | #endif
|
---|
224 | #ifdef ONLRET
|
---|
225 | MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 ),
|
---|
226 | #endif
|
---|
227 | #ifdef OFILL
|
---|
228 | MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 ),
|
---|
229 | #endif
|
---|
230 | #ifdef OFDEL
|
---|
231 | MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 ),
|
---|
232 | #endif
|
---|
233 | #ifdef NLDLY
|
---|
234 | MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY),
|
---|
235 | MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY),
|
---|
236 | #endif
|
---|
237 | #ifdef CRDLY
|
---|
238 | MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY),
|
---|
239 | MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY),
|
---|
240 | MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY),
|
---|
241 | MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY),
|
---|
242 | #endif
|
---|
243 |
|
---|
244 | #ifdef TABDLY
|
---|
245 | MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY),
|
---|
246 | MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY),
|
---|
247 | MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY),
|
---|
248 | MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY),
|
---|
249 | #else
|
---|
250 | # ifdef OXTABS
|
---|
251 | MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 ),
|
---|
252 | # endif
|
---|
253 | #endif
|
---|
254 |
|
---|
255 | #ifdef BSDLY
|
---|
256 | MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY),
|
---|
257 | MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY),
|
---|
258 | #endif
|
---|
259 | #ifdef VTDLY
|
---|
260 | MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY),
|
---|
261 | MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY),
|
---|
262 | #endif
|
---|
263 | #ifdef FFDLY
|
---|
264 | MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY),
|
---|
265 | MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY),
|
---|
266 | #endif
|
---|
267 | MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 ),
|
---|
268 | MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 ),
|
---|
269 | #ifdef IEXTEN
|
---|
270 | MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 ),
|
---|
271 | #endif
|
---|
272 | MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 ),
|
---|
273 | MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 ),
|
---|
274 | MI_ENTRY("crterase", local, REV | OMIT, ECHOE, 0 ),
|
---|
275 | MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 ),
|
---|
276 | MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 ),
|
---|
277 | MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 ),
|
---|
278 | #ifdef XCASE
|
---|
279 | MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 ),
|
---|
280 | #endif
|
---|
281 | #ifdef TOSTOP
|
---|
282 | MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 ),
|
---|
283 | #endif
|
---|
284 | #ifdef ECHOPRT
|
---|
285 | MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 ),
|
---|
286 | MI_ENTRY("prterase", local, REV | OMIT, ECHOPRT, 0 ),
|
---|
287 | #endif
|
---|
288 | #ifdef ECHOCTL
|
---|
289 | MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 ),
|
---|
290 | MI_ENTRY("ctlecho", local, REV | OMIT, ECHOCTL, 0 ),
|
---|
291 | #endif
|
---|
292 | #ifdef ECHOKE
|
---|
293 | MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 ),
|
---|
294 | MI_ENTRY("crtkill", local, REV | OMIT, ECHOKE, 0 ),
|
---|
295 | #endif
|
---|
296 | MI_ENTRY(evenp, combination, REV | OMIT, 0, 0 ),
|
---|
297 | MI_ENTRY(parity, combination, REV | OMIT, 0, 0 ),
|
---|
298 | MI_ENTRY(stty_oddp, combination, REV | OMIT, 0, 0 ),
|
---|
299 | MI_ENTRY(stty_nl, combination, REV | OMIT, 0, 0 ),
|
---|
300 | MI_ENTRY(stty_ek, combination, OMIT, 0, 0 ),
|
---|
301 | MI_ENTRY(stty_sane, combination, OMIT, 0, 0 ),
|
---|
302 | MI_ENTRY(cooked, combination, REV | OMIT, 0, 0 ),
|
---|
303 | MI_ENTRY(raw, combination, REV | OMIT, 0, 0 ),
|
---|
304 | MI_ENTRY(stty_pass8, combination, REV | OMIT, 0, 0 ),
|
---|
305 | MI_ENTRY(litout, combination, REV | OMIT, 0, 0 ),
|
---|
306 | MI_ENTRY(cbreak, combination, REV | OMIT, 0, 0 ),
|
---|
307 | #ifdef IXANY
|
---|
308 | MI_ENTRY(decctlq, combination, REV | OMIT, 0, 0 ),
|
---|
309 | #endif
|
---|
310 | #if defined(TABDLY) || defined(OXTABS)
|
---|
311 | MI_ENTRY(stty_tabs, combination, REV | OMIT, 0, 0 ),
|
---|
312 | #endif
|
---|
313 | #if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
|
---|
314 | MI_ENTRY(stty_lcase, combination, REV | OMIT, 0, 0 ),
|
---|
315 | MI_ENTRY(stty_LCASE, combination, REV | OMIT, 0, 0 ),
|
---|
316 | #endif
|
---|
317 | MI_ENTRY(stty_crt, combination, OMIT, 0, 0 ),
|
---|
318 | MI_ENTRY(stty_dec, combination, OMIT, 0, 0 ),
|
---|
319 | };
|
---|
320 |
|
---|
321 | enum {
|
---|
322 | NUM_mode_info = ARRAY_SIZE(mode_info)
|
---|
323 | };
|
---|
324 |
|
---|
325 | /* Control character settings */
|
---|
326 | struct control_info {
|
---|
327 | const char *const name; /* Name given on command line */
|
---|
328 | const unsigned char saneval; /* Value to set for 'stty sane' */
|
---|
329 | const unsigned char offset; /* Offset in c_cc */
|
---|
330 | };
|
---|
331 |
|
---|
332 | /* Control characters */
|
---|
333 |
|
---|
334 | static const struct control_info control_info[] = {
|
---|
335 | {"intr", CINTR, VINTR},
|
---|
336 | {"quit", CQUIT, VQUIT},
|
---|
337 | {"erase", CERASE, VERASE},
|
---|
338 | {"kill", CKILL, VKILL},
|
---|
339 | {stty_eof, CEOF, VEOF},
|
---|
340 | {stty_eol, CEOL, VEOL},
|
---|
341 | #ifdef VEOL2
|
---|
342 | {"eol2", CEOL2, VEOL2},
|
---|
343 | #endif
|
---|
344 | #ifdef VSWTCH
|
---|
345 | {stty_swtch, CSWTCH, VSWTCH},
|
---|
346 | #endif
|
---|
347 | {"start", CSTART, VSTART},
|
---|
348 | {"stop", CSTOP, VSTOP},
|
---|
349 | {"susp", CSUSP, VSUSP},
|
---|
350 | #ifdef VDSUSP
|
---|
351 | {"dsusp", CDSUSP, VDSUSP},
|
---|
352 | #endif
|
---|
353 | #ifdef VREPRINT
|
---|
354 | {"rprnt", CRPRNT, VREPRINT},
|
---|
355 | #endif
|
---|
356 | #ifdef VWERASE
|
---|
357 | {"werase", CWERASE, VWERASE},
|
---|
358 | #endif
|
---|
359 | #ifdef VLNEXT
|
---|
360 | {"lnext", CLNEXT, VLNEXT},
|
---|
361 | #endif
|
---|
362 | #ifdef VFLUSHO
|
---|
363 | {"flush", CFLUSHO, VFLUSHO},
|
---|
364 | #endif
|
---|
365 | #ifdef VSTATUS
|
---|
366 | {"status", CSTATUS, VSTATUS},
|
---|
367 | #endif
|
---|
368 | /* These must be last because of the display routines */
|
---|
369 | {stty_min, 1, VMIN},
|
---|
370 | {stty_time, 0, VTIME},
|
---|
371 | };
|
---|
372 |
|
---|
373 | enum {
|
---|
374 | NUM_control_info = ARRAY_SIZE(control_info)
|
---|
375 | };
|
---|
376 |
|
---|
377 | /* The width of the screen, for output wrapping */
|
---|
378 | unsigned max_col = 80; /* default */
|
---|
379 |
|
---|
380 | struct globals {
|
---|
381 | /* Current position, to know when to wrap */
|
---|
382 | unsigned current_col;
|
---|
383 | char buf[10];
|
---|
384 | };
|
---|
385 | #define G (*(struct globals*)&bb_common_bufsiz1)
|
---|
386 |
|
---|
387 | static const char *device_name = bb_msg_standard_input;
|
---|
388 |
|
---|
389 | /* Return a string that is the printable representation of character CH */
|
---|
390 | /* Adapted from 'cat' by Torbjorn Granlund */
|
---|
391 | static const char *visible(unsigned ch)
|
---|
392 | {
|
---|
393 | char *bpout = G.buf;
|
---|
394 |
|
---|
395 | if (ch == _POSIX_VDISABLE)
|
---|
396 | return "<undef>";
|
---|
397 |
|
---|
398 | if (ch >= 128) {
|
---|
399 | ch -= 128;
|
---|
400 | *bpout++ = 'M';
|
---|
401 | *bpout++ = '-';
|
---|
402 | }
|
---|
403 |
|
---|
404 | if (ch < 32) {
|
---|
405 | *bpout++ = '^';
|
---|
406 | *bpout++ = ch + 64;
|
---|
407 | } else if (ch < 127) {
|
---|
408 | *bpout++ = ch;
|
---|
409 | } else {
|
---|
410 | *bpout++ = '^';
|
---|
411 | *bpout++ = '?';
|
---|
412 | }
|
---|
413 |
|
---|
414 | *bpout = '\0';
|
---|
415 | return G.buf;
|
---|
416 | }
|
---|
417 |
|
---|
418 | static tcflag_t *mode_type_flag(unsigned type, const struct termios *mode)
|
---|
419 | {
|
---|
420 | static const unsigned char tcflag_offsets[] ALIGN1 = {
|
---|
421 | offsetof(struct termios, c_cflag), /* control */
|
---|
422 | offsetof(struct termios, c_iflag), /* input */
|
---|
423 | offsetof(struct termios, c_oflag), /* output */
|
---|
424 | offsetof(struct termios, c_lflag) /* local */
|
---|
425 | };
|
---|
426 |
|
---|
427 | if (type <= local) {
|
---|
428 | return (tcflag_t*) (((char*)mode) + tcflag_offsets[type]);
|
---|
429 | }
|
---|
430 | return NULL;
|
---|
431 | }
|
---|
432 |
|
---|
433 | static void set_speed_or_die(enum speed_setting type, const char *const arg,
|
---|
434 | struct termios * const mode)
|
---|
435 | {
|
---|
436 | speed_t baud;
|
---|
437 |
|
---|
438 | baud = tty_value_to_baud(xatou(arg));
|
---|
439 |
|
---|
440 | if (type != output_speed) { /* either input or both */
|
---|
441 | cfsetispeed(mode, baud);
|
---|
442 | }
|
---|
443 | if (type != input_speed) { /* either output or both */
|
---|
444 | cfsetospeed(mode, baud);
|
---|
445 | }
|
---|
446 | }
|
---|
447 |
|
---|
448 | static ATTRIBUTE_NORETURN void perror_on_device_and_die(const char *fmt)
|
---|
449 | {
|
---|
450 | bb_perror_msg_and_die(fmt, device_name);
|
---|
451 | }
|
---|
452 |
|
---|
453 | static void perror_on_device(const char *fmt)
|
---|
454 | {
|
---|
455 | bb_perror_msg(fmt, device_name);
|
---|
456 | }
|
---|
457 |
|
---|
458 | /* Print format string MESSAGE and optional args.
|
---|
459 | Wrap to next line first if it won't fit.
|
---|
460 | Print a space first unless MESSAGE will start a new line */
|
---|
461 | static void wrapf(const char *message, ...)
|
---|
462 | {
|
---|
463 | char buf[128];
|
---|
464 | va_list args;
|
---|
465 | int buflen;
|
---|
466 |
|
---|
467 | va_start(args, message);
|
---|
468 | buflen = vsnprintf(buf, sizeof(buf), message, args);
|
---|
469 | va_end(args);
|
---|
470 | /* We seem to be called only with suitable lengths, but check if
|
---|
471 | somebody failed to adhere to this assumption just to be sure. */
|
---|
472 | if (!buflen || buflen >= sizeof(buf)) return;
|
---|
473 |
|
---|
474 | if (G.current_col > 0) {
|
---|
475 | G.current_col++;
|
---|
476 | if (buf[0] != '\n') {
|
---|
477 | if (G.current_col + buflen >= max_col) {
|
---|
478 | putchar('\n');
|
---|
479 | G.current_col = 0;
|
---|
480 | } else
|
---|
481 | putchar(' ');
|
---|
482 | }
|
---|
483 | }
|
---|
484 | fputs(buf, stdout);
|
---|
485 | G.current_col += buflen;
|
---|
486 | if (buf[buflen-1] == '\n')
|
---|
487 | G.current_col = 0;
|
---|
488 | }
|
---|
489 |
|
---|
490 | static void set_window_size(const int rows, const int cols)
|
---|
491 | {
|
---|
492 | struct winsize win = { 0, 0, 0, 0};
|
---|
493 |
|
---|
494 | if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win)) {
|
---|
495 | if (errno != EINVAL) {
|
---|
496 | goto bail;
|
---|
497 | }
|
---|
498 | memset(&win, 0, sizeof(win));
|
---|
499 | }
|
---|
500 |
|
---|
501 | if (rows >= 0)
|
---|
502 | win.ws_row = rows;
|
---|
503 | if (cols >= 0)
|
---|
504 | win.ws_col = cols;
|
---|
505 |
|
---|
506 | if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
|
---|
507 | bail:
|
---|
508 | perror_on_device("%s");
|
---|
509 | }
|
---|
510 |
|
---|
511 | static void display_window_size(const int fancy)
|
---|
512 | {
|
---|
513 | const char *fmt_str = "%s\0%s: no size information for this device";
|
---|
514 | unsigned width, height;
|
---|
515 |
|
---|
516 | if (get_terminal_width_height(STDIN_FILENO, &width, &height)) {
|
---|
517 | if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
|
---|
518 | perror_on_device(fmt_str);
|
---|
519 | }
|
---|
520 | } else {
|
---|
521 | wrapf(fancy ? "rows %d; columns %d;" : "%d %d\n",
|
---|
522 | height, width);
|
---|
523 | }
|
---|
524 | }
|
---|
525 |
|
---|
526 | static const struct suffix_mult stty_suffixes[] = {
|
---|
527 | { "b", 512 },
|
---|
528 | { "k", 1024 },
|
---|
529 | { "B", 1024 },
|
---|
530 | { }
|
---|
531 | };
|
---|
532 |
|
---|
533 | static const struct mode_info *find_mode(const char *name)
|
---|
534 | {
|
---|
535 | int i;
|
---|
536 | for (i = 0; i < NUM_mode_info; ++i)
|
---|
537 | if (!strcmp(name, mode_info[i].name))
|
---|
538 | return &mode_info[i];
|
---|
539 | return 0;
|
---|
540 | }
|
---|
541 |
|
---|
542 | static const struct control_info *find_control(const char *name)
|
---|
543 | {
|
---|
544 | int i;
|
---|
545 | for (i = 0; i < NUM_control_info; ++i)
|
---|
546 | if (!strcmp(name, control_info[i].name))
|
---|
547 | return &control_info[i];
|
---|
548 | return 0;
|
---|
549 | }
|
---|
550 |
|
---|
551 | enum {
|
---|
552 | param_need_arg = 0x80,
|
---|
553 | param_line = 1 | 0x80,
|
---|
554 | param_rows = 2 | 0x80,
|
---|
555 | param_cols = 3 | 0x80,
|
---|
556 | param_columns = 4 | 0x80,
|
---|
557 | param_size = 5,
|
---|
558 | param_speed = 6,
|
---|
559 | param_ispeed = 7 | 0x80,
|
---|
560 | param_ospeed = 8 | 0x80,
|
---|
561 | };
|
---|
562 |
|
---|
563 | static int find_param(const char *const name)
|
---|
564 | {
|
---|
565 | static const char params[] ALIGN1 =
|
---|
566 | "line\0" /* 1 */
|
---|
567 | "rows\0" /* 2 */
|
---|
568 | "cols\0" /* 3 */
|
---|
569 | "columns\0" /* 4 */
|
---|
570 | "size\0" /* 5 */
|
---|
571 | "speed\0" /* 6 */
|
---|
572 | "ispeed\0"
|
---|
573 | "ospeed\0";
|
---|
574 | int i = index_in_strings(params, name) + 1;
|
---|
575 | if (i == 0)
|
---|
576 | return 0;
|
---|
577 | if (i != 5 && i != 6)
|
---|
578 | i |= 0x80;
|
---|
579 | return i;
|
---|
580 | }
|
---|
581 |
|
---|
582 | static int recover_mode(const char *arg, struct termios *mode)
|
---|
583 | {
|
---|
584 | int i, n;
|
---|
585 | unsigned chr;
|
---|
586 | unsigned long iflag, oflag, cflag, lflag;
|
---|
587 |
|
---|
588 | /* Scan into temporaries since it is too much trouble to figure out
|
---|
589 | the right format for 'tcflag_t' */
|
---|
590 | if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
|
---|
591 | &iflag, &oflag, &cflag, &lflag, &n) != 4)
|
---|
592 | return 0;
|
---|
593 | mode->c_iflag = iflag;
|
---|
594 | mode->c_oflag = oflag;
|
---|
595 | mode->c_cflag = cflag;
|
---|
596 | mode->c_lflag = lflag;
|
---|
597 | arg += n;
|
---|
598 | for (i = 0; i < NCCS; ++i) {
|
---|
599 | if (sscanf(arg, ":%x%n", &chr, &n) != 1)
|
---|
600 | return 0;
|
---|
601 | mode->c_cc[i] = chr;
|
---|
602 | arg += n;
|
---|
603 | }
|
---|
604 |
|
---|
605 | /* Fail if there are too many fields */
|
---|
606 | if (*arg != '\0')
|
---|
607 | return 0;
|
---|
608 |
|
---|
609 | return 1;
|
---|
610 | }
|
---|
611 |
|
---|
612 | static void display_recoverable(const struct termios *mode,
|
---|
613 | int ATTRIBUTE_UNUSED dummy)
|
---|
614 | {
|
---|
615 | int i;
|
---|
616 | printf("%lx:%lx:%lx:%lx",
|
---|
617 | (unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
|
---|
618 | (unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
|
---|
619 | for (i = 0; i < NCCS; ++i)
|
---|
620 | printf(":%x", (unsigned int) mode->c_cc[i]);
|
---|
621 | putchar('\n');
|
---|
622 | }
|
---|
623 |
|
---|
624 | static void display_speed(const struct termios *mode, int fancy)
|
---|
625 | {
|
---|
626 | //01234567 8 9
|
---|
627 | const char *fmt_str = "%lu %lu\n\0ispeed %lu baud; ospeed %lu baud;";
|
---|
628 | unsigned long ispeed, ospeed;
|
---|
629 |
|
---|
630 | ospeed = ispeed = cfgetispeed(mode);
|
---|
631 | if (ispeed == 0 || ispeed == (ospeed = cfgetospeed(mode))) {
|
---|
632 | ispeed = ospeed; /* in case ispeed was 0 */
|
---|
633 | //0123 4 5 6 7 8 9
|
---|
634 | fmt_str = "%lu\n\0\0\0\0\0speed %lu baud;";
|
---|
635 | }
|
---|
636 | if (fancy) fmt_str += 9;
|
---|
637 | wrapf(fmt_str, tty_baud_to_value(ispeed), tty_baud_to_value(ospeed));
|
---|
638 | }
|
---|
639 |
|
---|
640 | static void do_display(const struct termios *mode, const int all)
|
---|
641 | {
|
---|
642 | int i;
|
---|
643 | tcflag_t *bitsp;
|
---|
644 | unsigned long mask;
|
---|
645 | int prev_type = control;
|
---|
646 |
|
---|
647 | display_speed(mode, 1);
|
---|
648 | if (all)
|
---|
649 | display_window_size(1);
|
---|
650 | #ifdef HAVE_C_LINE
|
---|
651 | wrapf("line = %d;\n", mode->c_line);
|
---|
652 | #else
|
---|
653 | wrapf("\n");
|
---|
654 | #endif
|
---|
655 |
|
---|
656 | for (i = 0; control_info[i].name != stty_min; ++i) {
|
---|
657 | /* If swtch is the same as susp, don't print both */
|
---|
658 | #if VSWTCH == VSUSP
|
---|
659 | if (control_info[i].name == stty_swtch)
|
---|
660 | continue;
|
---|
661 | #endif
|
---|
662 | /* If eof uses the same slot as min, only print whichever applies */
|
---|
663 | #if VEOF == VMIN
|
---|
664 | if ((mode->c_lflag & ICANON) == 0
|
---|
665 | && (control_info[i].name == stty_eof
|
---|
666 | || control_info[i].name == stty_eol)) continue;
|
---|
667 | #endif
|
---|
668 | wrapf("%s = %s;", control_info[i].name,
|
---|
669 | visible(mode->c_cc[control_info[i].offset]));
|
---|
670 | }
|
---|
671 | #if VEOF == VMIN
|
---|
672 | if ((mode->c_lflag & ICANON) == 0)
|
---|
673 | #endif
|
---|
674 | wrapf("min = %d; time = %d;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
|
---|
675 | if (G.current_col) wrapf("\n");
|
---|
676 |
|
---|
677 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
678 | if (mode_info[i].flags & OMIT)
|
---|
679 | continue;
|
---|
680 | if (mode_info[i].type != prev_type) {
|
---|
681 | /* wrapf("\n"); */
|
---|
682 | if (G.current_col) wrapf("\n");
|
---|
683 | prev_type = mode_info[i].type;
|
---|
684 | }
|
---|
685 |
|
---|
686 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
687 | mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
---|
688 | if ((*bitsp & mask) == mode_info[i].bits) {
|
---|
689 | if (all || (mode_info[i].flags & SANE_UNSET))
|
---|
690 | wrapf("%s", mode_info[i].name);
|
---|
691 | } else {
|
---|
692 | if ((all && mode_info[i].flags & REV) ||
|
---|
693 | (!all &&
|
---|
694 | (mode_info[i].flags & (SANE_SET | REV)) == (SANE_SET | REV)))
|
---|
695 | wrapf("-%s", mode_info[i].name);
|
---|
696 | }
|
---|
697 | }
|
---|
698 | if (G.current_col) wrapf("\n");
|
---|
699 | }
|
---|
700 |
|
---|
701 | static void sane_mode(struct termios *mode)
|
---|
702 | {
|
---|
703 | int i;
|
---|
704 | tcflag_t *bitsp;
|
---|
705 |
|
---|
706 | for (i = 0; i < NUM_control_info; ++i) {
|
---|
707 | #if VMIN == VEOF
|
---|
708 | if (control_info[i].name == stty_min)
|
---|
709 | break;
|
---|
710 | #endif
|
---|
711 | mode->c_cc[control_info[i].offset] = control_info[i].saneval;
|
---|
712 | }
|
---|
713 |
|
---|
714 | for (i = 0; i < NUM_mode_info; ++i) {
|
---|
715 | if (mode_info[i].flags & SANE_SET) {
|
---|
716 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
717 | *bitsp = (*bitsp & ~((unsigned long)mode_info[i].mask))
|
---|
718 | | mode_info[i].bits;
|
---|
719 | } else if (mode_info[i].flags & SANE_UNSET) {
|
---|
720 | bitsp = mode_type_flag(mode_info[i].type, mode);
|
---|
721 | *bitsp = *bitsp & ~((unsigned long)mode_info[i].mask)
|
---|
722 | & ~mode_info[i].bits;
|
---|
723 | }
|
---|
724 | }
|
---|
725 | }
|
---|
726 |
|
---|
727 | /* Save set_mode from #ifdef forest plague */
|
---|
728 | #ifndef ONLCR
|
---|
729 | #define ONLCR 0
|
---|
730 | #endif
|
---|
731 | #ifndef OCRNL
|
---|
732 | #define OCRNL 0
|
---|
733 | #endif
|
---|
734 | #ifndef ONLRET
|
---|
735 | #define ONLRET 0
|
---|
736 | #endif
|
---|
737 | #ifndef XCASE
|
---|
738 | #define XCASE 0
|
---|
739 | #endif
|
---|
740 | #ifndef IXANY
|
---|
741 | #define IXANY 0
|
---|
742 | #endif
|
---|
743 | #ifndef TABDLY
|
---|
744 | #define TABDLY 0
|
---|
745 | #endif
|
---|
746 | #ifndef OXTABS
|
---|
747 | #define OXTABS 0
|
---|
748 | #endif
|
---|
749 | #ifndef IUCLC
|
---|
750 | #define IUCLC 0
|
---|
751 | #endif
|
---|
752 | #ifndef OLCUC
|
---|
753 | #define OLCUC 0
|
---|
754 | #endif
|
---|
755 | #ifndef ECHOCTL
|
---|
756 | #define ECHOCTL 0
|
---|
757 | #endif
|
---|
758 | #ifndef ECHOKE
|
---|
759 | #define ECHOKE 0
|
---|
760 | #endif
|
---|
761 |
|
---|
762 | static void set_mode(const struct mode_info *info, int reversed,
|
---|
763 | struct termios *mode)
|
---|
764 | {
|
---|
765 | tcflag_t *bitsp;
|
---|
766 |
|
---|
767 | bitsp = mode_type_flag(info->type, mode);
|
---|
768 |
|
---|
769 | if (bitsp) {
|
---|
770 | if (reversed)
|
---|
771 | *bitsp = *bitsp & ~info->mask & ~info->bits;
|
---|
772 | else
|
---|
773 | *bitsp = (*bitsp & ~info->mask) | info->bits;
|
---|
774 | return;
|
---|
775 | }
|
---|
776 |
|
---|
777 | /* Combination mode */
|
---|
778 | if (info->name == evenp || info->name == parity) {
|
---|
779 | if (reversed)
|
---|
780 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
781 | else
|
---|
782 | mode->c_cflag = (mode->c_cflag & ~PARODD & ~CSIZE) | PARENB | CS7;
|
---|
783 | } else if (info->name == stty_oddp) {
|
---|
784 | if (reversed)
|
---|
785 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
786 | else
|
---|
787 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARODD | PARENB;
|
---|
788 | } else if (info->name == stty_nl) {
|
---|
789 | if (reversed) {
|
---|
790 | mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
|
---|
791 | mode->c_oflag = (mode->c_oflag | ONLCR) & ~OCRNL & ~ONLRET;
|
---|
792 | } else {
|
---|
793 | mode->c_iflag = mode->c_iflag & ~ICRNL;
|
---|
794 | if (ONLCR) mode->c_oflag = mode->c_oflag & ~ONLCR;
|
---|
795 | }
|
---|
796 | } else if (info->name == stty_ek) {
|
---|
797 | mode->c_cc[VERASE] = CERASE;
|
---|
798 | mode->c_cc[VKILL] = CKILL;
|
---|
799 | } else if (info->name == stty_sane) {
|
---|
800 | sane_mode(mode);
|
---|
801 | }
|
---|
802 | else if (info->name == cbreak) {
|
---|
803 | if (reversed)
|
---|
804 | mode->c_lflag |= ICANON;
|
---|
805 | else
|
---|
806 | mode->c_lflag &= ~ICANON;
|
---|
807 | } else if (info->name == stty_pass8) {
|
---|
808 | if (reversed) {
|
---|
809 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
810 | mode->c_iflag |= ISTRIP;
|
---|
811 | } else {
|
---|
812 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
813 | mode->c_iflag &= ~ISTRIP;
|
---|
814 | }
|
---|
815 | } else if (info->name == litout) {
|
---|
816 | if (reversed) {
|
---|
817 | mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
---|
818 | mode->c_iflag |= ISTRIP;
|
---|
819 | mode->c_oflag |= OPOST;
|
---|
820 | } else {
|
---|
821 | mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
---|
822 | mode->c_iflag &= ~ISTRIP;
|
---|
823 | mode->c_oflag &= ~OPOST;
|
---|
824 | }
|
---|
825 | } else if (info->name == raw || info->name == cooked) {
|
---|
826 | if ((info->name[0] == 'r' && reversed)
|
---|
827 | || (info->name[0] == 'c' && !reversed)) {
|
---|
828 | /* Cooked mode */
|
---|
829 | mode->c_iflag |= BRKINT | IGNPAR | ISTRIP | ICRNL | IXON;
|
---|
830 | mode->c_oflag |= OPOST;
|
---|
831 | mode->c_lflag |= ISIG | ICANON;
|
---|
832 | #if VMIN == VEOF
|
---|
833 | mode->c_cc[VEOF] = CEOF;
|
---|
834 | #endif
|
---|
835 | #if VTIME == VEOL
|
---|
836 | mode->c_cc[VEOL] = CEOL;
|
---|
837 | #endif
|
---|
838 | } else {
|
---|
839 | /* Raw mode */
|
---|
840 | mode->c_iflag = 0;
|
---|
841 | mode->c_oflag &= ~OPOST;
|
---|
842 | mode->c_lflag &= ~(ISIG | ICANON | XCASE);
|
---|
843 | mode->c_cc[VMIN] = 1;
|
---|
844 | mode->c_cc[VTIME] = 0;
|
---|
845 | }
|
---|
846 | }
|
---|
847 | else if (IXANY && info->name == decctlq) {
|
---|
848 | if (reversed)
|
---|
849 | mode->c_iflag |= IXANY;
|
---|
850 | else
|
---|
851 | mode->c_iflag &= ~IXANY;
|
---|
852 | }
|
---|
853 | else if (TABDLY && info->name == stty_tabs) {
|
---|
854 | if (reversed)
|
---|
855 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
|
---|
856 | else
|
---|
857 | mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
|
---|
858 | }
|
---|
859 | else if (OXTABS && info->name == stty_tabs) {
|
---|
860 | if (reversed)
|
---|
861 | mode->c_oflag |= OXTABS;
|
---|
862 | else
|
---|
863 | mode->c_oflag &= ~OXTABS;
|
---|
864 | }
|
---|
865 | else if (XCASE && IUCLC && OLCUC
|
---|
866 | && (info->name == stty_lcase || info->name == stty_LCASE)) {
|
---|
867 | if (reversed) {
|
---|
868 | mode->c_lflag &= ~XCASE;
|
---|
869 | mode->c_iflag &= ~IUCLC;
|
---|
870 | mode->c_oflag &= ~OLCUC;
|
---|
871 | } else {
|
---|
872 | mode->c_lflag |= XCASE;
|
---|
873 | mode->c_iflag |= IUCLC;
|
---|
874 | mode->c_oflag |= OLCUC;
|
---|
875 | }
|
---|
876 | }
|
---|
877 | else if (info->name == stty_crt) {
|
---|
878 | mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
---|
879 | }
|
---|
880 | else if (info->name == stty_dec) {
|
---|
881 | mode->c_cc[VINTR] = 3; /* ^C */
|
---|
882 | mode->c_cc[VERASE] = 127; /* DEL */
|
---|
883 | mode->c_cc[VKILL] = 21; /* ^U */
|
---|
884 | mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
---|
885 | if (IXANY) mode->c_iflag &= ~IXANY;
|
---|
886 | }
|
---|
887 | }
|
---|
888 |
|
---|
889 | static void set_control_char_or_die(const struct control_info *info,
|
---|
890 | const char *arg, struct termios *mode)
|
---|
891 | {
|
---|
892 | unsigned char value;
|
---|
893 |
|
---|
894 | if (info->name == stty_min || info->name == stty_time)
|
---|
895 | value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
---|
896 | else if (arg[0] == '\0' || arg[1] == '\0')
|
---|
897 | value = arg[0];
|
---|
898 | else if (!strcmp(arg, "^-") || !strcmp(arg, "undef"))
|
---|
899 | value = _POSIX_VDISABLE;
|
---|
900 | else if (arg[0] == '^') { /* Ignore any trailing junk (^Cjunk) */
|
---|
901 | value = arg[1] & 0x1f; /* Non-letters get weird results */
|
---|
902 | if (arg[1] == '?')
|
---|
903 | value = 127;
|
---|
904 | } else
|
---|
905 | value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
---|
906 | mode->c_cc[info->offset] = value;
|
---|
907 | }
|
---|
908 |
|
---|
909 | #define STTY_require_set_attr (1<<0)
|
---|
910 | #define STTY_speed_was_set (1<<1)
|
---|
911 | #define STTY_verbose_output (1<<2)
|
---|
912 | #define STTY_recoverable_output (1<<3)
|
---|
913 | #define STTY_noargs (1<<4)
|
---|
914 | int stty_main(int argc, char **argv);
|
---|
915 | int stty_main(int argc, char **argv)
|
---|
916 | {
|
---|
917 | struct termios mode;
|
---|
918 | void (*output_func)(const struct termios *, const int);
|
---|
919 | const char *file_name = NULL;
|
---|
920 | int display_all = 0;
|
---|
921 | int stty_state;
|
---|
922 | int k;
|
---|
923 |
|
---|
924 | stty_state = STTY_noargs;
|
---|
925 | output_func = do_display;
|
---|
926 |
|
---|
927 | /* First pass: only parse/verify command line params */
|
---|
928 | k = 0;
|
---|
929 | while (argv[++k]) {
|
---|
930 | const struct mode_info *mp;
|
---|
931 | const struct control_info *cp;
|
---|
932 | const char *arg = argv[k];
|
---|
933 | const char *argnext = argv[k+1];
|
---|
934 | int param;
|
---|
935 |
|
---|
936 | if (arg[0] == '-') {
|
---|
937 | int i;
|
---|
938 | mp = find_mode(arg+1);
|
---|
939 | if (mp) {
|
---|
940 | if (!(mp->flags & REV))
|
---|
941 | goto invalid_argument;
|
---|
942 | stty_state &= ~STTY_noargs;
|
---|
943 | continue;
|
---|
944 | }
|
---|
945 | /* It is an option - parse it */
|
---|
946 | i = 0;
|
---|
947 | while (arg[++i]) {
|
---|
948 | switch (arg[i]) {
|
---|
949 | case 'a':
|
---|
950 | stty_state |= STTY_verbose_output;
|
---|
951 | output_func = do_display;
|
---|
952 | display_all = 1;
|
---|
953 | break;
|
---|
954 | case 'g':
|
---|
955 | stty_state |= STTY_recoverable_output;
|
---|
956 | output_func = display_recoverable;
|
---|
957 | break;
|
---|
958 | case 'F':
|
---|
959 | if (file_name)
|
---|
960 | bb_error_msg_and_die("only one device may be specified");
|
---|
961 | file_name = &arg[i+1]; /* "-Fdevice" ? */
|
---|
962 | if (!file_name[0]) { /* nope, "-F device" */
|
---|
963 | int p = k+1; /* argv[p] is argnext */
|
---|
964 | file_name = argnext;
|
---|
965 | if (!file_name)
|
---|
966 | bb_error_msg_and_die(bb_msg_requires_arg, "-F");
|
---|
967 | /* remove -F param from arg[vc] */
|
---|
968 | --argc;
|
---|
969 | while (argv[p]) { argv[p] = argv[p+1]; ++p; }
|
---|
970 | }
|
---|
971 | goto end_option;
|
---|
972 | default:
|
---|
973 | goto invalid_argument;
|
---|
974 | }
|
---|
975 | }
|
---|
976 | end_option:
|
---|
977 | continue;
|
---|
978 | }
|
---|
979 |
|
---|
980 | mp = find_mode(arg);
|
---|
981 | if (mp) {
|
---|
982 | stty_state &= ~STTY_noargs;
|
---|
983 | continue;
|
---|
984 | }
|
---|
985 |
|
---|
986 | cp = find_control(arg);
|
---|
987 | if (cp) {
|
---|
988 | if (!argnext)
|
---|
989 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
990 | /* called for the side effect of xfunc death only */
|
---|
991 | set_control_char_or_die(cp, argnext, &mode);
|
---|
992 | stty_state &= ~STTY_noargs;
|
---|
993 | ++k;
|
---|
994 | continue;
|
---|
995 | }
|
---|
996 |
|
---|
997 | param = find_param(arg);
|
---|
998 | if (param & param_need_arg) {
|
---|
999 | if (!argnext)
|
---|
1000 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
1001 | ++k;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | switch (param) {
|
---|
1005 | #ifdef HAVE_C_LINE
|
---|
1006 | case param_line:
|
---|
1007 | # ifndef TIOCGWINSZ
|
---|
1008 | xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
---|
1009 | break;
|
---|
1010 | # endif /* else fall-through */
|
---|
1011 | #endif
|
---|
1012 | #ifdef TIOCGWINSZ
|
---|
1013 | case param_rows:
|
---|
1014 | case param_cols:
|
---|
1015 | case param_columns:
|
---|
1016 | xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
---|
1017 | break;
|
---|
1018 | case param_size:
|
---|
1019 | #endif
|
---|
1020 | case param_speed:
|
---|
1021 | break;
|
---|
1022 | case param_ispeed:
|
---|
1023 | /* called for the side effect of xfunc death only */
|
---|
1024 | set_speed_or_die(input_speed, argnext, &mode);
|
---|
1025 | break;
|
---|
1026 | case param_ospeed:
|
---|
1027 | /* called for the side effect of xfunc death only */
|
---|
1028 | set_speed_or_die(output_speed, argnext, &mode);
|
---|
1029 | break;
|
---|
1030 | default:
|
---|
1031 | if (recover_mode(arg, &mode) == 1) break;
|
---|
1032 | if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) break;
|
---|
1033 | invalid_argument:
|
---|
1034 | bb_error_msg_and_die("invalid argument '%s'", arg);
|
---|
1035 | }
|
---|
1036 | stty_state &= ~STTY_noargs;
|
---|
1037 | }
|
---|
1038 |
|
---|
1039 | /* Specifying both -a and -g is an error */
|
---|
1040 | if ((stty_state & (STTY_verbose_output | STTY_recoverable_output)) ==
|
---|
1041 | (STTY_verbose_output | STTY_recoverable_output))
|
---|
1042 | bb_error_msg_and_die("verbose and stty-readable output styles are mutually exclusive");
|
---|
1043 | /* Specifying -a or -g with non-options is an error */
|
---|
1044 | if (!(stty_state & STTY_noargs) &&
|
---|
1045 | (stty_state & (STTY_verbose_output | STTY_recoverable_output)))
|
---|
1046 | bb_error_msg_and_die("modes may not be set when specifying an output style");
|
---|
1047 |
|
---|
1048 | /* Now it is safe to start doing things */
|
---|
1049 | if (file_name) {
|
---|
1050 | int fd, fdflags;
|
---|
1051 | device_name = file_name;
|
---|
1052 | fd = xopen(device_name, O_RDONLY | O_NONBLOCK);
|
---|
1053 | if (fd != STDIN_FILENO) {
|
---|
1054 | dup2(fd, STDIN_FILENO);
|
---|
1055 | close(fd);
|
---|
1056 | }
|
---|
1057 | fdflags = fcntl(STDIN_FILENO, F_GETFL);
|
---|
1058 | if (fdflags < 0 ||
|
---|
1059 | fcntl(STDIN_FILENO, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
|
---|
1060 | perror_on_device_and_die("%s: cannot reset non-blocking mode");
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
1064 | spurious difference in an uninitialized portion of the structure */
|
---|
1065 | memset(&mode, 0, sizeof(mode));
|
---|
1066 | if (tcgetattr(STDIN_FILENO, &mode))
|
---|
1067 | perror_on_device_and_die("%s");
|
---|
1068 |
|
---|
1069 | if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
|
---|
1070 | get_terminal_width_height(STDOUT_FILENO, &max_col, NULL);
|
---|
1071 | output_func(&mode, display_all);
|
---|
1072 | return EXIT_SUCCESS;
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 | /* Second pass: perform actions */
|
---|
1076 | k = 0;
|
---|
1077 | while (argv[++k]) {
|
---|
1078 | const struct mode_info *mp;
|
---|
1079 | const struct control_info *cp;
|
---|
1080 | const char *arg = argv[k];
|
---|
1081 | const char *argnext = argv[k+1];
|
---|
1082 | int param;
|
---|
1083 |
|
---|
1084 | if (arg[0] == '-') {
|
---|
1085 | mp = find_mode(arg+1);
|
---|
1086 | if (mp) {
|
---|
1087 | set_mode(mp, 1 /* reversed */, &mode);
|
---|
1088 | stty_state |= STTY_require_set_attr;
|
---|
1089 | }
|
---|
1090 | /* It is an option - already parsed. Skip it */
|
---|
1091 | continue;
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | mp = find_mode(arg);
|
---|
1095 | if (mp) {
|
---|
1096 | set_mode(mp, 0 /* non-reversed */, &mode);
|
---|
1097 | stty_state |= STTY_require_set_attr;
|
---|
1098 | continue;
|
---|
1099 | }
|
---|
1100 |
|
---|
1101 | cp = find_control(arg);
|
---|
1102 | if (cp) {
|
---|
1103 | ++k;
|
---|
1104 | set_control_char_or_die(cp, argnext, &mode);
|
---|
1105 | stty_state |= STTY_require_set_attr;
|
---|
1106 | continue;
|
---|
1107 | }
|
---|
1108 |
|
---|
1109 | param = find_param(arg);
|
---|
1110 | if (param & param_need_arg) {
|
---|
1111 | ++k;
|
---|
1112 | }
|
---|
1113 |
|
---|
1114 | switch (param) {
|
---|
1115 | #ifdef HAVE_C_LINE
|
---|
1116 | case param_line:
|
---|
1117 | mode.c_line = xatoul_sfx(argnext, stty_suffixes);
|
---|
1118 | stty_state |= STTY_require_set_attr;
|
---|
1119 | break;
|
---|
1120 | #endif
|
---|
1121 | #ifdef TIOCGWINSZ
|
---|
1122 | case param_cols:
|
---|
1123 | set_window_size(-1, xatoul_sfx(argnext, stty_suffixes));
|
---|
1124 | break;
|
---|
1125 | case param_size:
|
---|
1126 | display_window_size(0);
|
---|
1127 | break;
|
---|
1128 | case param_rows:
|
---|
1129 | set_window_size(xatoul_sfx(argnext, stty_suffixes), -1);
|
---|
1130 | break;
|
---|
1131 | #endif
|
---|
1132 | case param_speed:
|
---|
1133 | display_speed(&mode, 0);
|
---|
1134 | break;
|
---|
1135 | case param_ispeed:
|
---|
1136 | set_speed_or_die(input_speed, argnext, &mode);
|
---|
1137 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1138 | break;
|
---|
1139 | case param_ospeed:
|
---|
1140 | set_speed_or_die(output_speed, argnext, &mode);
|
---|
1141 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1142 | break;
|
---|
1143 | default:
|
---|
1144 | if (recover_mode(arg, &mode) == 1)
|
---|
1145 | stty_state |= STTY_require_set_attr;
|
---|
1146 | else /* true: if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) */{
|
---|
1147 | set_speed_or_die(both_speeds, arg, &mode);
|
---|
1148 | stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
---|
1149 | } /* else - impossible (caught in the first pass):
|
---|
1150 | bb_error_msg_and_die("invalid argument '%s'", arg); */
|
---|
1151 | }
|
---|
1152 | }
|
---|
1153 |
|
---|
1154 | if (stty_state & STTY_require_set_attr) {
|
---|
1155 | struct termios new_mode;
|
---|
1156 |
|
---|
1157 | if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
|
---|
1158 | perror_on_device_and_die("%s");
|
---|
1159 |
|
---|
1160 | /* POSIX (according to Zlotnick's book) tcsetattr returns zero if
|
---|
1161 | it performs *any* of the requested operations. This means it
|
---|
1162 | can report 'success' when it has actually failed to perform
|
---|
1163 | some proper subset of the requested operations. To detect
|
---|
1164 | this partial failure, get the current terminal attributes and
|
---|
1165 | compare them to the requested ones */
|
---|
1166 |
|
---|
1167 | /* Initialize to all zeroes so there is no risk memcmp will report a
|
---|
1168 | spurious difference in an uninitialized portion of the structure */
|
---|
1169 | memset(&new_mode, 0, sizeof(new_mode));
|
---|
1170 | if (tcgetattr(STDIN_FILENO, &new_mode))
|
---|
1171 | perror_on_device_and_die("%s");
|
---|
1172 |
|
---|
1173 | if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
|
---|
1174 | #ifdef CIBAUD
|
---|
1175 | /* SunOS 4.1.3 (at least) has the problem that after this sequence,
|
---|
1176 | tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
|
---|
1177 | sometimes (m1 != m2). The only difference is in the four bits
|
---|
1178 | of the c_cflag field corresponding to the baud rate. To save
|
---|
1179 | Sun users a little confusion, don't report an error if this
|
---|
1180 | happens. But suppress the error only if we haven't tried to
|
---|
1181 | set the baud rate explicitly -- otherwise we'd never give an
|
---|
1182 | error for a true failure to set the baud rate */
|
---|
1183 |
|
---|
1184 | new_mode.c_cflag &= (~CIBAUD);
|
---|
1185 | if ((stty_state & STTY_speed_was_set)
|
---|
1186 | || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
|
---|
1187 | #endif
|
---|
1188 | perror_on_device_and_die("%s: cannot perform all requested operations");
|
---|
1189 | }
|
---|
1190 | }
|
---|
1191 |
|
---|
1192 | return EXIT_SUCCESS;
|
---|
1193 | }
|
---|