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/cvs/rxvt-unicode/src/ptytty.C
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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.31 by root, Tue Jan 10 18:09:22 2006 UTC vs.
Revision 1.39 by root, Tue Jan 17 12:22:59 2006 UTC

… …
54#endif 54#endif
55 55
56#include <cstdio> 56#include <cstdio>
57#include <grp.h> 57#include <grp.h>
58 58
59#include "ptytty.h"
60
61/////////////////////////////////////////////////////////////////////////////
62
59/* ------------------------------------------------------------------------- * 63/* ------------------------------------------------------------------------- *
60 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 64 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
61 * ------------------------------------------------------------------------- */ 65 * ------------------------------------------------------------------------- */
62/* 66/*
63 * Returns pty file descriptor, or -1 on failure 67 * Returns pty file descriptor, or -1 on failure
… …
87 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 91 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
88 if (*ttydev != NULL) 92 if (*ttydev != NULL)
89 return pfd; 93 return pfd;
90#endif 94#endif
91 95
92#ifdef PTYS_ARE_GETPTY
93 char *ptydev;
94
95 while ((ptydev = getpty ()) != NULL)
96 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
97 {
98 *ttydev = ptydev;
99 return pfd;
100 }
101#endif
102
103#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 96#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
104# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 97# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
105 98
106 { 99 {
107# ifdef PTYS_ARE_GETPT 100# ifdef PTYS_ARE_GETPT
108 pfd = getpt (); 101 pfd = getpt();
102# else
103# ifdef PTYS_ARE_POSIX
104 pfd = posix_openpt (O_RDWR);
109# else 105# else
110 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 106 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
107# endif
111# endif 108# endif
112 109
113 if (pfd >= 0) 110 if (pfd >= 0)
114 { 111 {
115 if (grantpt (pfd) == 0 /* change slave permissions */ 112 if (grantpt (pfd) == 0 /* change slave permissions */
… …
225/*----------------------------------------------------------------------*/ 222/*----------------------------------------------------------------------*/
226/* 223/*
227 * Make our tty a controlling tty so that /dev/tty points to us 224 * Make our tty a controlling tty so that /dev/tty points to us
228 */ 225 */
229static int 226static int
230control_tty (int fd_tty, const char *ttydev) 227control_tty (int fd_tty)
231{ 228{
232#ifndef __QNX__
233 int fd; 229 int fd;
234 230
235 /* ---------------------------------------- */ 231 /* ---------------------------------------- */
236# ifdef HAVE_SETSID
237 setsid (); 232 setsid ();
238# endif
239# if defined(HAVE_SETPGID)
240 setpgid (0, 0);
241# elif defined(HAVE_SETPGRP)
242 setpgrp (0, 0);
243# endif
244 233
245 /* ---------------------------------------- */ 234 /* ---------------------------------------- */
246# ifdef TIOCNOTTY
247 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
248 if (fd >= 0)
249 {
250 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
251 close (fd);
252 }
253# endif
254
255 /* ---------------------------------------- */
256 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
257 if (fd >= 0)
258 close (fd); /* ouch: still have controlling tty */
259
260 /* ---------------------------------------- */
261#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 235# if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
262 /* 236 /*
263 * Push STREAMS modules: 237 * Push STREAMS modules:
264 * ptem: pseudo-terminal hardware emulation module. 238 * ptem: pseudo-terminal hardware emulation module.
265 * ldterm: standard terminal line discipline. 239 * ldterm: standard terminal line discipline.
266 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 240 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
274 * documentation is really unclear about whether it is any close () on 248 * documentation is really unclear about whether it is any close () on
275 * the master side or the last close () - i.e. a proper STREAMS dismantling 249 * the master side or the last close () - i.e. a proper STREAMS dismantling
276 * close () - on the master side which causes a hang up to be sent 250 * close () - on the master side which causes a hang up to be sent
277 * through - Geoff Wing 251 * through - Geoff Wing
278 */ 252 */
279# ifdef HAVE_ISASTREAM 253# ifdef HAVE_ISASTREAM
280 if (isastream (fd_tty) == 1) 254 if (isastream (fd_tty) == 1)
281# endif 255# endif
282 { 256 {
283 ioctl (fd_tty, I_PUSH, "ptem"); 257 ioctl (fd_tty, I_PUSH, "ptem");
284 ioctl (fd_tty, I_PUSH, "ldterm"); 258 ioctl (fd_tty, I_PUSH, "ldterm");
285 ioctl (fd_tty, I_PUSH, "ttcompat"); 259 ioctl (fd_tty, I_PUSH, "ttcompat");
286 } 260 }
287#endif 261# endif
288 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
289# if defined(TIOCSCTTY)
290 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 263 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
291# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293# else
294 fd = open (ttydev, O_RDWR);
295 if (fd >= 0)
296 close (fd);
297# endif
298 /* ---------------------------------------- */ 264 /* ---------------------------------------- */
299 fd = open ("/dev/tty", O_WRONLY); 265 fd = open ("/dev/tty", O_WRONLY);
300 if (fd < 0) 266 if (fd < 0)
301 return -1; /* fatal */ 267 return -1; /* fatal */
302 close (fd); 268 close (fd);
303 /* ---------------------------------------- */ 269 /* ---------------------------------------- */
304#endif /* ! __QNX__ */
305 270
306 return 0; 271 return 0;
307} 272}
273
274void
275rxvt_ptytty::close_tty ()
276{
277 if (tty < 0)
278 return;
279
280 close (tty);
281 tty = -1;
282}
283
284bool
285rxvt_ptytty::make_controlling_tty ()
286{
287 return control_tty (tty) >= 0;
288}
289
290void
291rxvt_ptytty::set_utf8_mode (bool on)
292{
293#ifdef IUTF8
294 if (pty < 0)
295 return;
296
297 struct termios tio;
298
299 if (tcgetattr (pty, &tio) != -1)
300 {
301 tcflag_t new_cflag = tio.c_iflag;
302
303 if (on)
304 new_cflag |= IUTF8;
305 else
306 new_cflag &= ~IUTF8;
307
308 if (new_cflag != tio.c_iflag)
309 {
310 tio.c_iflag = new_cflag;
311 tcsetattr (pty, TCSANOW, &tio);
312 }
313 }
314#endif
315}
316
317/////////////////////////////////////////////////////////////////////////////
308 318
309#ifndef NO_SETOWNER_TTYDEV 319#ifndef NO_SETOWNER_TTYDEV
310static struct ttyconf { 320static struct ttyconf {
311 gid_t gid; 321 gid_t gid;
312 mode_t mode; 322 mode_t mode;
… …
328 gid = getgid (); 338 gid = getgid ();
329 } 339 }
330 } 340 }
331} ttyconf; 341} ttyconf;
332 342
343/////////////////////////////////////////////////////////////////////////////
344
333void 345void
334rxvt_ptytty::privileges (rxvt_privaction action) 346rxvt_ptytty_unix::privileges (rxvt_privaction action)
335{ 347{
336 if (!name || !*name) 348 if (!name || !*name)
337 return; 349 return;
338 350
339 rxvt_privileges (RESTORE); 351 rxvt_privileges (RESTORE);
… …
372 384
373 rxvt_privileges (IGNORE); 385 rxvt_privileges (IGNORE);
374} 386}
375#endif 387#endif
376 388
377rxvt_ptytty::rxvt_ptytty () 389rxvt_ptytty_unix::rxvt_ptytty_unix ()
378{ 390{
379 pty = tty = -1; 391 pty = tty = -1;
380 name = 0; 392 name = 0;
381#ifndef NO_SETOWNER_TTYDEV 393#ifndef NO_SETOWNER_TTYDEV
382 saved = false; 394 saved = false;
383#endif 395#endif
396#if UTMP_SUPPORT
397 cmd_pid = 0;
398#endif
384} 399}
385 400
386rxvt_ptytty::~rxvt_ptytty () 401rxvt_ptytty_unix::~rxvt_ptytty_unix ()
387{ 402{
403 logout ();
388 put (); 404 put ();
389} 405}
390 406
391void 407void
392
393rxvt_ptytty::close_tty ()
394{
395 if (tty < 0)
396 return;
397
398 close (tty);
399 tty = -1;
400}
401
402void
403rxvt_ptytty::put () 408rxvt_ptytty_unix::put ()
404{ 409{
405#ifndef NO_SETOWNER_TTYDEV 410#ifndef NO_SETOWNER_TTYDEV
406 privileges (RESTORE); 411 privileges (RESTORE);
407#endif 412#endif
408 413
… …
413 pty = tty = -1; 418 pty = tty = -1;
414 name = 0; 419 name = 0;
415} 420}
416 421
417bool 422bool
418rxvt_ptytty::make_controlling_tty ()
419{
420 return control_tty (tty, name) >= 0;
421}
422
423bool
424rxvt_ptytty::get () 423rxvt_ptytty_unix::get ()
425{ 424{
426 /* get master (pty) */ 425 /* get master (pty) */
427 if ((pty = get_pty (&tty, &name)) < 0) 426 if ((pty = get_pty (&tty, &name)) < 0)
428 return false; 427 return false;
429 428
… …
444 } 443 }
445 444
446 return true; 445 return true;
447} 446}
448 447
449void 448// a "factory" *g*
450rxvt_ptytty::set_utf8_mode (bool on) 449rxvt_ptytty *rxvt_new_ptytty ()
451{ 450{
452#ifdef IUTF8 451 return new rxvt_ptytty_unix;
453 if (pty < 0)
454 return;
455
456 struct termios tio;
457
458 if (tcgetattr (pty, &tio) != -1)
459 {
460 tcflag_t new_cflag = tio.c_iflag;
461
462 if (on)
463 new_cflag |= IUTF8;
464 else
465 new_cflag &= ~IUTF8;
466
467 if (new_cflag != tio.c_iflag)
468 {
469 tio.c_iflag = new_cflag;
470 tcsetattr (pty, TCSANOW, &tio);
471 }
472 }
473#endif
474} 452}
475 453
476/*----------------------- end-of-file (C source) -----------------------*/ 454/*----------------------- end-of-file (C source) -----------------------*/
477 455

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