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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.16 by root, Sun Aug 15 03:30:04 2004 UTC vs.
Revision 1.40 by root, Tue Jan 17 15:17:39 2006 UTC

… …
2 * File: ptytty.C 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * 4 *
5 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
7 * Copyright (c) 2004 Marc Lehmann <pcg@goof.com> 7 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
8 * 8 *
9 * This program is free software; you can redistribute it and/or modify 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by 10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or 11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version. 12 * (at your option) any later version.
… …
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#ifdef HAVE_STDLIB_H
28# include <cstdlib> 27#include <cstdlib>
29#endif 28#include <cstring>
30#ifdef HAVE_SYS_TYPES_H 29
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#if defined(HAVE_STRING_H)
37# include <cstring>
38#endif
39#ifdef HAVE_FCNTL_H
40# include <fcntl.h> 33#include <fcntl.h>
41#endif 34
42#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
43# include <sys/ioctl.h> 36# include <sys/ioctl.h>
44#endif 37#endif
45#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
46# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
47#endif 40#endif
48#ifdef HAVE_ISASTREAM 41#ifdef HAVE_ISASTREAM
49# include <stropts.h> 42# include <stropts.h>
50#endif 43#endif
51 44#if defined(HAVE_PTY_H)
52#if defined( __FreeBSD__) 45# include <pty.h>
53// better do this via configure, but.... 46#elif defined(HAVE_LIBUTIL_H)
54# include <libutil.h> 47# include <libutil.h>
48#elif defined(HAVE_UTIL_H)
49# include <util.h>
55#endif 50#endif
56 51
57#include <cstdio> 52#include <cstdio>
58#include <grp.h> 53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58
59/////////////////////////////////////////////////////////////////////////////
59 60
60/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
61 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
62 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
63/* 64/*
… …
71 int pfd; 72 int pfd;
72 73
73#ifdef PTYS_ARE_OPENPTY 74#ifdef PTYS_ARE_OPENPTY
74 char tty_name[sizeof "/dev/pts/????\0"]; 75 char tty_name[sizeof "/dev/pts/????\0"];
75 76
77 rxvt_privileges(RESTORE);
76 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 78 int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
79 rxvt_privileges(IGNORE);
80
81 if (res != -1)
77 { 82 {
78 *ttydev = strdup (tty_name); 83 *ttydev = strdup (tty_name);
79 return pfd; 84 return pfd;
80 } 85 }
81#endif 86#endif
… …
84 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 89 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
85 if (*ttydev != NULL) 90 if (*ttydev != NULL)
86 return pfd; 91 return pfd;
87#endif 92#endif
88 93
89#ifdef PTYS_ARE_GETPTY
90
91 char *ptydev;
92
93 while ((ptydev = getpty ()) != NULL)
94 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
95 {
96 *ttydev = ptydev;
97 return pfd;
98 }
99#endif
100
101#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 94#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
102# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 95# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
103 96
104 { 97 {
105# ifdef PTYS_ARE_GETPT 98# ifdef PTYS_ARE_GETPT
106 pfd = getpt (); 99 pfd = getpt();
100# else
101# ifdef PTYS_ARE_POSIX
102 pfd = posix_openpt (O_RDWR);
107# else 103# else
108 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 104 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
105# endif
109# endif 106# endif
110 107
111 if (pfd >= 0) 108 if (pfd >= 0)
112 { 109 {
113 if (grantpt (pfd) == 0 /* change slave permissions */ 110 if (grantpt (pfd) == 0 /* change slave permissions */
… …
223/*----------------------------------------------------------------------*/ 220/*----------------------------------------------------------------------*/
224/* 221/*
225 * 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
226 */ 223 */
227static int 224static int
228control_tty (int fd_tty, const char *ttydev) 225control_tty (int fd_tty)
229{ 226{
230#ifndef __QNX__
231 int fd; 227 int fd;
232 228
233 /* ---------------------------------------- */ 229 /* ---------------------------------------- */
234# ifdef HAVE_SETSID
235 setsid (); 230 setsid ();
236# endif
237# if defined(HAVE_SETPGID)
238 setpgid (0, 0);
239# elif defined(HAVE_SETPGRP)
240 setpgrp (0, 0);
241# endif
242 231
243 /* ---------------------------------------- */ 232 /* ---------------------------------------- */
244# ifdef TIOCNOTTY
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 if (fd >= 0)
247 {
248 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
249 close (fd);
250 }
251# endif
252
253 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
255 if (fd >= 0)
256 close (fd); /* ouch: still have controlling tty */
257
258 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 233# if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 234 /*
261 * Push STREAMS modules: 235 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 236 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 237 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 238 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
272 * documentation is really unclear about whether it is any close () on 246 * documentation is really unclear about whether it is any close () on
273 * 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
274 * 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
275 * through - Geoff Wing 249 * through - Geoff Wing
276 */ 250 */
277# ifdef HAVE_ISASTREAM 251# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 252 if (isastream (fd_tty) == 1)
279# endif 253# endif
280 { 254 {
281 ioctl (fd_tty, I_PUSH, "ptem"); 255 ioctl (fd_tty, I_PUSH, "ptem");
282 ioctl (fd_tty, I_PUSH, "ldterm"); 256 ioctl (fd_tty, I_PUSH, "ldterm");
283 ioctl (fd_tty, I_PUSH, "ttcompat"); 257 ioctl (fd_tty, I_PUSH, "ttcompat");
284 } 258 }
285#endif 259# endif
286 /* ---------------------------------------- */ 260 /* ---------------------------------------- */
287# if defined(TIOCSCTTY)
288 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 261 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
289# elif defined(TIOCSETCTTY)
290 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
291# else
292 fd = open (ttydev, O_RDWR);
293 if (fd >= 0)
294 close (fd);
295# endif
296 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
297 fd = open ("/dev/tty", O_WRONLY); 263 fd = open ("/dev/tty", O_WRONLY);
298 if (fd < 0) 264 if (fd < 0)
299 return -1; /* fatal */ 265 return -1; /* fatal */
300 close (fd); 266 close (fd);
301 /* ---------------------------------------- */ 267 /* ---------------------------------------- */
302#endif /* ! __QNX__ */
303 268
304 return 0; 269 return 0;
305} 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/////////////////////////////////////////////////////////////////////////////
306 316
307#ifndef NO_SETOWNER_TTYDEV 317#ifndef NO_SETOWNER_TTYDEV
308static struct ttyconf { 318static struct ttyconf {
309 gid_t gid; 319 gid_t gid;
310 mode_t mode; 320 mode_t mode;
… …
326 gid = getgid (); 336 gid = getgid ();
327 } 337 }
328 } 338 }
329} ttyconf; 339} ttyconf;
330 340
341/////////////////////////////////////////////////////////////////////////////
342
331void 343void
332rxvt_ptytty::privileges (rxvt_privaction action) 344rxvt_ptytty_unix::privileges (rxvt_privaction action)
333{ 345{
346 if (!name || !*name)
347 return;
348
334 rxvt_privileges (RESTORE); 349 rxvt_privileges (RESTORE);
335 350
336 if (action == SAVE) 351 if (action == SAVE)
337 { 352 {
338 //next_tty_action = RESTORE;
339# ifndef RESET_TTY_TO_COMMON_DEFAULTS 353# ifndef RESET_TTY_TO_COMMON_DEFAULTS
340 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ 354 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
341 if (lstat (name, &savestat) < 0) /* you lose out */ 355 if (lstat (name, &savestat) < 0) /* you lose out */
342 ;//next_tty_action = IGNORE; 356 ;
343 else 357 else
344# endif 358# endif
345
346 { 359 {
360 saved = true;
347 chown (name, getuid (), ttyconf.gid); /* fail silently */ 361 chown (name, getuid (), ttyconf.gid); /* fail silently */
348 chmod (name, ttyconf.mode); 362 chmod (name, ttyconf.mode);
349# ifdef HAVE_REVOKE 363# ifdef HAVE_REVOKE
350 revoke (name); 364 revoke (name);
351# endif 365# endif
352
353 } 366 }
354 } 367 }
355 else 368 else
356 { /* action == RESTORE */ 369 { /* action == RESTORE */
357 //next_tty_action = IGNORE;
358# ifndef RESET_TTY_TO_COMMON_DEFAULTS 370# ifndef RESET_TTY_TO_COMMON_DEFAULTS
371 if (saved)
372 {
359 chmod (name, savestat.st_mode); 373 chmod (name, savestat.st_mode);
360 chown (name, savestat.st_uid, savestat.st_gid); 374 chown (name, savestat.st_uid, savestat.st_gid);
375 }
361# else 376# else
362 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); 377 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
363 chown (name, 0, 0); 378 chown (name, 0, 0);
364# endif 379# endif
365 380
… …
367 382
368 rxvt_privileges (IGNORE); 383 rxvt_privileges (IGNORE);
369} 384}
370#endif 385#endif
371 386
372rxvt_ptytty::rxvt_ptytty () 387rxvt_ptytty_unix::rxvt_ptytty_unix ()
373{ 388{
374 pty = tty = -1; 389 pty = tty = -1;
375 name = 0; 390 name = 0;
391#ifndef NO_SETOWNER_TTYDEV
392 saved = false;
393#endif
394#if UTMP_SUPPORT
395 cmd_pid = 0;
396#endif
376} 397}
377 398
378rxvt_ptytty::~rxvt_ptytty () 399rxvt_ptytty_unix::~rxvt_ptytty_unix ()
379{ 400{
401 logout ();
380 put (); 402 put ();
381} 403}
382 404
383void 405void
384
385rxvt_ptytty::close_tty ()
386{
387 if (tty >= 0) 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 if (tty >= 0)
396 privileges (RESTORE); 409 privileges (RESTORE);
397#endif 410#endif
398 411
399 if (pty >= 0) close (pty); 412 if (pty >= 0) close (pty);
400 close_tty (); 413 close_tty ();
401 free (name); 414 free (name);
… …
403 pty = tty = -1; 416 pty = tty = -1;
404 name = 0; 417 name = 0;
405} 418}
406 419
407bool 420bool
408rxvt_ptytty::make_controlling_tty ()
409{
410 return control_tty (tty, name) >= 0;
411}
412
413bool
414rxvt_ptytty::get () 421rxvt_ptytty_unix::get ()
415{ 422{
416 /* get master (pty) */ 423 /* get master (pty) */
417 if ((pty = get_pty (&tty, &name)) < 0) 424 if ((pty = get_pty (&tty, &name)) < 0)
418 return false; 425 return false;
419 426
… …
434 } 441 }
435 442
436 return true; 443 return true;
437} 444}
438 445
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
495void
496rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
497{
498 command cmd;
499
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));
505
506 write (sock_fd, &cmd, sizeof (cmd));
507}
508
509rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
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 }
567 else
568 break;
569 }
570
571 // destroy all ptys
572 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
573 delete *i;
574}
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)
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}
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;
624}
625
439/*----------------------- end-of-file (C source) -----------------------*/ 626/*----------------------- end-of-file (C source) -----------------------*/
440 627

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