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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.32 by root, Wed Jan 11 20:46:46 2006 UTC vs.
Revision 1.40 by root, Tue Jan 17 15:17:39 2006 UTC

… …
22 *---------------------------------------------------------------------*/ 22 *---------------------------------------------------------------------*/
23 23
24#include "../config.h" /* NECESSARY */ 24#include "../config.h" /* NECESSARY */
25#include "rxvt.h" 25#include "rxvt.h"
26 26
27# include <cstdlib> 27#include <cstdlib>
28# include <cstring> 28#include <cstring>
29 29
30#ifdef HAVE_SYS_TYPES_H
31# include <sys/types.h> 30#include <sys/types.h>
32#endif 31#include <sys/socket.h>
33#ifdef HAVE_UNISTD_H
34# include <unistd.h> 32#include <unistd.h>
35#endif
36#ifdef HAVE_FCNTL_H
37# include <fcntl.h> 33#include <fcntl.h>
38#endif 34
39#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
40# include <sys/ioctl.h> 36# include <sys/ioctl.h>
41#endif 37#endif
42#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
43# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
… …
53# include <util.h> 49# include <util.h>
54#endif 50#endif
55 51
56#include <cstdio> 52#include <cstdio>
57#include <grp.h> 53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58
59/////////////////////////////////////////////////////////////////////////////
58 60
59/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
60 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
61 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
62/* 64/*
… …
88 if (*ttydev != NULL) 90 if (*ttydev != NULL)
89 return pfd; 91 return pfd;
90#endif 92#endif
91 93
92#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 94#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
93# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 95# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
94 96
95 { 97 {
96# ifdef PTYS_ARE_GETPT 98# ifdef PTYS_ARE_GETPT
97 pfd = getpt (); 99 pfd = getpt();
100# else
101# ifdef PTYS_ARE_POSIX
102 pfd = posix_openpt (O_RDWR);
98# else 103# else
99 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 104 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
105# endif
100# endif 106# endif
101 107
102 if (pfd >= 0) 108 if (pfd >= 0)
103 { 109 {
104 if (grantpt (pfd) == 0 /* change slave permissions */ 110 if (grantpt (pfd) == 0 /* change slave permissions */
… …
214/*----------------------------------------------------------------------*/ 220/*----------------------------------------------------------------------*/
215/* 221/*
216 * Make our tty a controlling tty so that /dev/tty points to us 222 * Make our tty a controlling tty so that /dev/tty points to us
217 */ 223 */
218static int 224static int
219control_tty (int fd_tty, const char *ttydev) 225control_tty (int fd_tty)
220{ 226{
221#ifndef __QNX__
222 int fd; 227 int fd;
223 228
224 /* ---------------------------------------- */ 229 /* ---------------------------------------- */
225# ifdef HAVE_SETSID
226 setsid (); 230 setsid ();
227# endif
228# if defined(HAVE_SETPGID)
229 setpgid (0, 0);
230# elif defined(HAVE_SETPGRP)
231 setpgrp (0, 0);
232# endif
233 231
234 /* ---------------------------------------- */ 232 /* ---------------------------------------- */
235# ifdef TIOCNOTTY
236 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
237 if (fd >= 0)
238 {
239 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
240 close (fd);
241 }
242# endif
243
244 /* ---------------------------------------- */
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 if (fd >= 0)
247 close (fd); /* ouch: still have controlling tty */
248
249 /* ---------------------------------------- */
250#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 233# if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
251 /* 234 /*
252 * Push STREAMS modules: 235 * Push STREAMS modules:
253 * ptem: pseudo-terminal hardware emulation module. 236 * ptem: pseudo-terminal hardware emulation module.
254 * ldterm: standard terminal line discipline. 237 * ldterm: standard terminal line discipline.
255 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 238 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
263 * documentation is really unclear about whether it is any close () on 246 * documentation is really unclear about whether it is any close () on
264 * the master side or the last close () - i.e. a proper STREAMS dismantling 247 * the master side or the last close () - i.e. a proper STREAMS dismantling
265 * close () - on the master side which causes a hang up to be sent 248 * close () - on the master side which causes a hang up to be sent
266 * through - Geoff Wing 249 * through - Geoff Wing
267 */ 250 */
268# ifdef HAVE_ISASTREAM 251# ifdef HAVE_ISASTREAM
269 if (isastream (fd_tty) == 1) 252 if (isastream (fd_tty) == 1)
270# endif 253# endif
271 { 254 {
272 ioctl (fd_tty, I_PUSH, "ptem"); 255 ioctl (fd_tty, I_PUSH, "ptem");
273 ioctl (fd_tty, I_PUSH, "ldterm"); 256 ioctl (fd_tty, I_PUSH, "ldterm");
274 ioctl (fd_tty, I_PUSH, "ttcompat"); 257 ioctl (fd_tty, I_PUSH, "ttcompat");
275 } 258 }
276#endif 259# endif
277 /* ---------------------------------------- */ 260 /* ---------------------------------------- */
278# if defined(TIOCSCTTY)
279 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 261 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
280# elif defined(TIOCSETCTTY)
281 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
282# else
283 fd = open (ttydev, O_RDWR);
284 if (fd >= 0)
285 close (fd);
286# endif
287 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
288 fd = open ("/dev/tty", O_WRONLY); 263 fd = open ("/dev/tty", O_WRONLY);
289 if (fd < 0) 264 if (fd < 0)
290 return -1; /* fatal */ 265 return -1; /* fatal */
291 close (fd); 266 close (fd);
292 /* ---------------------------------------- */ 267 /* ---------------------------------------- */
293#endif /* ! __QNX__ */
294 268
295 return 0; 269 return 0;
296} 270}
271
272void
273rxvt_ptytty::close_tty ()
274{
275 if (tty < 0)
276 return;
277
278 close (tty);
279 tty = -1;
280}
281
282bool
283rxvt_ptytty::make_controlling_tty ()
284{
285 return control_tty (tty) >= 0;
286}
287
288void
289rxvt_ptytty::set_utf8_mode (bool on)
290{
291#ifdef IUTF8
292 if (pty < 0)
293 return;
294
295 struct termios tio;
296
297 if (tcgetattr (pty, &tio) != -1)
298 {
299 tcflag_t new_cflag = tio.c_iflag;
300
301 if (on)
302 new_cflag |= IUTF8;
303 else
304 new_cflag &= ~IUTF8;
305
306 if (new_cflag != tio.c_iflag)
307 {
308 tio.c_iflag = new_cflag;
309 tcsetattr (pty, TCSANOW, &tio);
310 }
311 }
312#endif
313}
314
315/////////////////////////////////////////////////////////////////////////////
297 316
298#ifndef NO_SETOWNER_TTYDEV 317#ifndef NO_SETOWNER_TTYDEV
299static struct ttyconf { 318static struct ttyconf {
300 gid_t gid; 319 gid_t gid;
301 mode_t mode; 320 mode_t mode;
… …
317 gid = getgid (); 336 gid = getgid ();
318 } 337 }
319 } 338 }
320} ttyconf; 339} ttyconf;
321 340
341/////////////////////////////////////////////////////////////////////////////
342
322void 343void
323rxvt_ptytty::privileges (rxvt_privaction action) 344rxvt_ptytty_unix::privileges (rxvt_privaction action)
324{ 345{
325 if (!name || !*name) 346 if (!name || !*name)
326 return; 347 return;
327 348
328 rxvt_privileges (RESTORE); 349 rxvt_privileges (RESTORE);
… …
361 382
362 rxvt_privileges (IGNORE); 383 rxvt_privileges (IGNORE);
363} 384}
364#endif 385#endif
365 386
366rxvt_ptytty::rxvt_ptytty () 387rxvt_ptytty_unix::rxvt_ptytty_unix ()
367{ 388{
368 pty = tty = -1; 389 pty = tty = -1;
369 name = 0; 390 name = 0;
370#ifndef NO_SETOWNER_TTYDEV 391#ifndef NO_SETOWNER_TTYDEV
371 saved = false; 392 saved = false;
372#endif 393#endif
394#if UTMP_SUPPORT
395 cmd_pid = 0;
396#endif
373} 397}
374 398
375rxvt_ptytty::~rxvt_ptytty () 399rxvt_ptytty_unix::~rxvt_ptytty_unix ()
376{ 400{
401 logout ();
377 put (); 402 put ();
378} 403}
379 404
380void 405void
381
382rxvt_ptytty::close_tty ()
383{
384 if (tty < 0)
385 return;
386
387 close (tty);
388 tty = -1;
389}
390
391void
392rxvt_ptytty::put () 406rxvt_ptytty_unix::put ()
393{ 407{
394#ifndef NO_SETOWNER_TTYDEV 408#ifndef NO_SETOWNER_TTYDEV
395 privileges (RESTORE); 409 privileges (RESTORE);
396#endif 410#endif
397 411
… …
402 pty = tty = -1; 416 pty = tty = -1;
403 name = 0; 417 name = 0;
404} 418}
405 419
406bool 420bool
407rxvt_ptytty::make_controlling_tty ()
408{
409 return control_tty (tty, name) >= 0;
410}
411
412bool
413rxvt_ptytty::get () 421rxvt_ptytty_unix::get ()
414{ 422{
415 /* get master (pty) */ 423 /* get master (pty) */
416 if ((pty = get_pty (&tty, &name)) < 0) 424 if ((pty = get_pty (&tty, &name)) < 0)
417 return false; 425 return false;
418 426
… …
433 } 441 }
434 442
435 return true; 443 return true;
436} 444}
437 445
446#if PTYTTY_HELPER
447
448static int sock_fd;
449static int pid;
450
451struct command
452{
453 enum { get, login, destroy } type;
454
455 rxvt_ptytty *id;
456
457 bool login_shell;
458 int cmd_pid;
459 char hostname[512]; // arbitrary, but should be plenty
460};
461
462struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
463{
464 rxvt_ptytty *id;
465
466 rxvt_ptytty_proxy ();
467 ~rxvt_ptytty_proxy ();
468
469 bool get ();
470 void login (int cmd_pid, bool login_shell, const char *hostname);
471};
472
473bool
474rxvt_ptytty_proxy::get ()
475{
476 command cmd;
477
478 cmd.type = command::get;
479
480 write (sock_fd, &cmd, sizeof (cmd));
481
482 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
483 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
484
485 if (!id)
486 return false;
487
488 if ((pty = rxvt_recv_fd (sock_fd)) < 0
489 || (tty = rxvt_recv_fd (sock_fd)) < 0)
490 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
491
492 return true;
493}
494
438void 495void
439rxvt_ptytty::set_utf8_mode (bool on) 496rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
440{ 497{
441#ifdef IUTF8 498 command cmd;
442 if (pty < 0)
443 return;
444 499
445 struct termios tio; 500 cmd.type = command::login;
501 cmd.id = id;
502 cmd.cmd_pid = cmd_pid;
503 cmd.login_shell = login_shell;
504 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
446 505
447 if (tcgetattr (pty, &tio) != -1) 506 write (sock_fd, &cmd, sizeof (cmd));
448 { 507}
449 tcflag_t new_cflag = tio.c_iflag;
450 508
451 if (on) 509rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
452 new_cflag |= IUTF8; 510{
511 command cmd;
512
513 cmd.type = command::destroy;
514 cmd.id = id;
515
516 write (sock_fd, &cmd, sizeof (cmd));
517}
518
519static
520void serve ()
521{
522 command cmd;
523 vector<rxvt_ptytty *> ptys;
524
525 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
526 {
527 if (cmd.type == command::get)
528 {
529 // -> id ptyfd ttyfd
530 cmd.id = new rxvt_ptytty_unix;
531
532 if (cmd.id->get ())
533 {
534 write (sock_fd, &cmd.id, sizeof (cmd.id));
535 ptys.push_back (cmd.id);
536
537 rxvt_send_fd (sock_fd, cmd.id->pty);
538 rxvt_send_fd (sock_fd, cmd.id->tty);
539 }
540 else
541 {
542 delete cmd.id;
543 cmd.id = 0;
544 write (sock_fd, &cmd.id, sizeof (cmd.id));
545 }
546 }
547 else if (cmd.type == command::login)
548 {
549 if (find (ptys.begin (), ptys.end (), cmd.id))
550 {
551 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
552 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
553 }
554 else printf ("xxx hiya login no match %p\n", cmd.id);
555 }
556 else if (cmd.type == command::destroy)
557 {
558 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
559
560 if (*pty)
561 {
562 ptys.erase (pty);
563 delete *pty;
564 }
565 else printf ("xxx hiya destroy no match %p\n", cmd.id);
566 }
453 else 567 else
454 new_cflag &= ~IUTF8; 568 break;
569 }
455 570
456 if (new_cflag != tio.c_iflag) 571 // destroy all ptys
457 { 572 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
458 tio.c_iflag = new_cflag; 573 delete *i;
459 tcsetattr (pty, TCSANOW, &tio); 574}
460 } 575
576void rxvt_ptytty_server ()
577{
578 int sv[2];
579
580 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
581 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
582
583 pid = fork ();
584
585 if (pid < 0)
586 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
587
588 if (pid)
461 } 589 {
590 // client, urxvt
591 sock_fd = sv[0];
592 close (sv[1]);
593 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
594 }
595 else
596 {
597 // server, pty-helper
598 sock_fd = sv[1];
599
600 close (sv[0]);//D
601// for (int fd = 0; fd < 1023; fd++)
602// if (fd != sock_fd)
603// close (fd);
604
605 serve ();
606 _exit (EXIT_SUCCESS);
607 }
608}
462#endif 609#endif
610
611// a "factory" *g*
612rxvt_ptytty *
613rxvt_new_ptytty ()
614{
615#if PTYTTY_HELPER
616 if (pid > 0)
617 {
618 // use helper process
619 return new rxvt_ptytty_proxy;
620 }
621 else
622#endif
623 return new rxvt_ptytty_unix;
463} 624}
464 625
465/*----------------------- end-of-file (C source) -----------------------*/ 626/*----------------------- end-of-file (C source) -----------------------*/
466 627

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