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1 /* vi:set ts=8 sts=4 sw=4:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
9 /*
10 * The stuff in this file mostly comes from the "screen" program.
11 * Included with permission from Juergen Weigert.
12 * Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c.
13 *
14 * It has been modified to work better with Vim.
15 * The parts that are not used in Vim have been deleted.
16 * See the "screen" sources for the complete stuff.
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17 *
18 * This specific version is distibuted under the Vim license (attribution by
19 * Juergen Weigert), the GPL applies to the original version, see the
20 * copyright notice below.
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21 */
22
23 /* Copyright (c) 1993
24 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
25 * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
26 * Copyright (c) 1987 Oliver Laumann
27 *
28 * This program is free software; you can redistribute it and/or modify
29 * it under the terms of the GNU General Public License as published by
30 * the Free Software Foundation; either version 2, or (at your option)
31 * any later version.
32 *
33 * This program is distributed in the hope that it will be useful,
34 * but WITHOUT ANY WARRANTY; without even the implied warranty of
35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
36 * GNU General Public License for more details.
37 *
38 * You should have received a copy of the GNU General Public License
39 * along with this program (see the file COPYING); if not, write to the
40 * Free Software Foundation, Inc.,
41 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
42 */
43
44 #include "vim.h"
45
46 #include <signal.h>
47
48 #ifdef __CYGWIN32__
49 # include <sys/termios.h>
50 #endif
51
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52 #ifdef HAVE_SYS_IOCTL_H
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53 # include <sys/ioctl.h>
54 #endif
55
56 #if HAVE_STROPTS_H
57 #include <sys/types.h>
58 #ifdef sinix
59 #define buf_T __system_buf_t__
60 #endif
61 #include <stropts.h>
62 #ifdef sinix
63 #undef buf_T
64 #endif
65 # ifdef sun
66 # include <sys/conf.h>
67 # endif
68 #endif
69
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70 #ifdef HAVE_UNISTD_H
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71 # include <unistd.h>
72 #endif
73
74 #if HAVE_TERMIO_H
75 # include <termio.h>
76 #else
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77 # ifdef HAVE_TERMIOS_H
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78 # include <termios.h>
79 # endif
80 #endif
81
82 #if HAVE_SYS_STREAM_H
83 # include <sys/stream.h>
84 #endif
85
86 #if HAVE_SYS_PTEM_H
87 # include <sys/ptem.h>
88 #endif
89
90 #if !defined(sun) && !defined(VMS) && !defined(MACOS)
91 # include <sys/ioctl.h>
92 #endif
93
94 #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL)
95 # include <sys/ttold.h>
96 #endif
97
98 #ifdef ISC
99 # include <sys/tty.h>
100 # include <sys/sioctl.h>
101 # include <sys/pty.h>
102 #endif
103
104 #ifdef sgi
105 # include <sys/sysmacros.h>
106 #endif
107
108 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux)
109 # define hpux
110 #endif
111
112 /*
113 * if no PTYRANGE[01] is in the config file, we pick a default
114 */
115 #ifndef PTYRANGE0
116 # define PTYRANGE0 "qprs"
117 #endif
118 #ifndef PTYRANGE1
119 # define PTYRANGE1 "0123456789abcdef"
120 #endif
121
122 /* SVR4 pseudo ttys don't seem to work with SCO-5 */
123 #ifdef M_UNIX
124 # undef HAVE_SVR4_PTYS
125 #endif
126
127 static void initmaster __ARGS((int));
128
129 /*
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130 * Open all ptys with O_NOCTTY, just to be on the safe side.
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131 */
132 #ifndef O_NOCTTY
133 # define O_NOCTTY 0
134 #endif
135
136 static void
137 initmaster(f)
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138 int f UNUSED;
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139 {
140 #ifndef VMS
141 # ifdef POSIX
142 tcflush(f, TCIOFLUSH);
143 # else
144 # ifdef TIOCFLUSH
145 (void)ioctl(f, TIOCFLUSH, (char *) 0);
146 # endif
147 # endif
148 # ifdef LOCKPTY
149 (void)ioctl(f, TIOCEXCL, (char *) 0);
150 # endif
151 #endif
152 }
153
154 /*
155 * This causes a hang on some systems, but is required for a properly working
156 * pty on others. Needs to be tuned...
157 */
158 int
159 SetupSlavePTY(fd)
160 int fd;
161 {
162 if (fd < 0)
163 return 0;
164 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX)
165 # if defined(HAVE_SYS_PTEM_H) || defined(hpux)
166 if (ioctl(fd, I_PUSH, "ptem") != 0)
167 return -1;
168 # endif
169 if (ioctl(fd, I_PUSH, "ldterm") != 0)
170 return -1;
171 # ifdef sun
172 if (ioctl(fd, I_PUSH, "ttcompat") != 0)
173 return -1;
174 # endif
175 #endif
176 return 0;
177 }
178
179
180 #if defined(OSX) && !defined(PTY_DONE)
181 #define PTY_DONE
182 int
183 OpenPTY(ttyn)
184 char **ttyn;
185 {
186 int f;
187 static char TtyName[32];
188
189 if ((f = open_controlling_pty(TtyName)) < 0)
190 return -1;
191 initmaster(f);
192 *ttyn = TtyName;
193 return f;
194 }
195 #endif
196
197 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \
198 && !defined(PTY_DONE)
199 #define PTY_DONE
200 int
201 OpenPTY(ttyn)
202 char **ttyn;
203 {
204 char *m, *s;
205 int f;
206 /* used for opening a new pty-pair: */
207 static char PtyName[32];
208 static char TtyName[32];
209
210 if ((f = getpseudotty(&s, &m)) < 0)
211 return -1;
212 #ifdef _SEQUENT_
213 fvhangup(s);
214 #endif
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215 vim_strncpy((char_u *)PtyName, (char_u *)m, sizeof(PtyName) - 1);
216 vim_strncpy((char_u *)TtyName, (char_u *)s, sizeof(TtyName) - 1);
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217 initmaster(f);
218 *ttyn = TtyName;
219 return f;
220 }
221 #endif
222
223 #if defined(__sgi) && !defined(PTY_DONE)
224 #define PTY_DONE
225 int
226 OpenPTY(ttyn)
227 char **ttyn;
228 {
229 int f;
230 char *name;
231 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
232
233 /*
234 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and
235 * exec() /usr/adm/mkpts
236 */
237 sigcld = signal(SIGCHLD, SIG_DFL);
238 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0);
239 signal(SIGCHLD, sigcld);
240
241 if (name == 0)
242 return -1;
243 initmaster(f);
244 *ttyn = name;
245 return f;
246 }
247 #endif
248
249 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
250 #define PTY_DONE
251 int
252 OpenPTY(ttyn)
253 char **ttyn;
254 {
255 int f;
256 struct stat buf;
257 /* used for opening a new pty-pair: */
258 static char TtyName[32];
259
260 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0)
261 return -1;
262 if (mch_fstat(f, &buf) < 0)
263 {
264 close(f);
265 return -1;
266 }
267 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev));
268 initmaster(f);
269 *ttyn = TtyName;
270 return f;
271 }
272 #endif
273
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274 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) && !defined(MACOS_X)
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275
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276 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work!
277 * Same for Mac OS X Leopard. */
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278 #define PTY_DONE
279 int
280 OpenPTY(ttyn)
281 char **ttyn;
282 {
283 int f;
107b773 Fix for compiler warning about function prototype in pty.c.
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284 char *m;
285 char *(ptsname __ARGS((int)));
286 int unlockpt __ARGS((int));
287 int grantpt __ARGS((int));
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288 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
289 /* used for opening a new pty-pair: */
290 static char TtyName[32];
291
292 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
293 return -1;
294
295 /*
296 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and
297 * exec()s pt_chmod
298 */
299 sigcld = signal(SIGCHLD, SIG_DFL);
300 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))
301 {
302 signal(SIGCHLD, sigcld);
303 close(f);
304 return -1;
305 }
306 signal(SIGCHLD, sigcld);
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307 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1);
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308 initmaster(f);
309 *ttyn = TtyName;
310 return f;
311 }
312 #endif
313
314 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
315 #define PTY_DONE
316
317 #ifdef _IBMR2
318 int aixhack = -1;
319 #endif
320
321 int
322 OpenPTY(ttyn)
323 char **ttyn;
324 {
325 int f;
326 /* used for opening a new pty-pair: */
327 static char TtyName[32];
328
329 /* a dumb looking loop replaced by mycrofts code: */
330 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0)
331 return -1;
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332 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1);
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333 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
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334 {
335 close(f);
336 return -1;
337 }
338 initmaster(f);
339 # ifdef _IBMR2
340 if (aixhack >= 0)
341 close(aixhack);
342 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0)
343 {
344 close(f);
345 return -1;
346 }
347 # endif
348 *ttyn = TtyName;
349 return f;
350 }
351 #endif
352
353 #ifndef PTY_DONE
354
355 # ifdef hpux
356 static char PtyProto[] = "/dev/ptym/ptyXY";
357 static char TtyProto[] = "/dev/pty/ttyXY";
358 # else
359 # ifdef __BEOS__
360 static char PtyProto[] = "/dev/pt/XY";
361 static char TtyProto[] = "/dev/tt/XY";
362 # else
363 static char PtyProto[] = "/dev/ptyXY";
364 static char TtyProto[] = "/dev/ttyXY";
365 # endif
366 # endif
367
368 int
369 OpenPTY(ttyn)
370 char **ttyn;
371 {
372 char *p, *q, *l, *d;
373 int f;
374 /* used for opening a new pty-pair: */
375 static char PtyName[32];
376 static char TtyName[32];
377
378 strcpy(PtyName, PtyProto);
379 strcpy(TtyName, TtyProto);
380 for (p = PtyName; *p != 'X'; p++)
381 ;
382 for (q = TtyName; *q != 'X'; q++)
383 ;
384 for (l = PTYRANGE0; (*p = *l) != '\0'; l++)
385 {
386 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++)
387 {
388 #if !defined(MACOS) || defined(USE_CARBONIZED)
389 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
390 #else
391 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1)
392 #endif
393 continue;
394 q[0] = *l;
395 q[1] = *d;
396 #ifndef MACOS
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397 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
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398 {
399 close(f);
400 continue;
401 }
402 #endif
403 #if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3)
404 /* Hack to ensure that the slave side of the pty is
405 * unused. May not work in anything other than SunOS4.1
406 */
407 {
408 int pgrp;
409
410 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */
411 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)
412 {
413 close(f);
414 continue;
415 }
416 }
417 #endif
418 initmaster(f);
419 *ttyn = TtyName;
420 return f;
421 }
422 }
423 return -1;
424 }
425 #endif
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