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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.1 by pcg, Mon Nov 24 17:28:08 2003 UTC vs.
Revision 1.51 by ayin, Thu Jan 19 18:53:05 2006 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: ptytty.c 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * $Id: ptytty.C,v 1.1 2003/11/24 17:28:08 pcg Exp $
5 * 4 *
6 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
7 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.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.
… …
20 * along with this program; if not, write to the Free Software 20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *---------------------------------------------------------------------*/ 22 *---------------------------------------------------------------------*/
23 23
24#include "../config.h" /* NECESSARY */ 24#include "../config.h" /* NECESSARY */
25#include "rxvt.h"
25 26
26/*
27 * Try to be self-contained except for the above autoconfig'd defines
28 */
29
30#include <stdio.h>
31#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 27#include <cstdlib>
33#endif 28#include <cstring>
34#ifdef HAVE_SYS_TYPES_H 29
35# include <sys/types.h> 30#include <sys/types.h>
36#endif 31#include <sys/socket.h>
37#ifdef HAVE_UNISTD_H
38# include <unistd.h> 32#include <unistd.h>
39#endif
40#if defined(HAVE_STRING_H)
41# include <string.h>
42#endif
43#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 33#include <fcntl.h>
45#endif 34
46#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
47# include <sys/ioctl.h> 36# include <sys/ioctl.h>
48#endif 37#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
50# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
51#endif 40#endif
52 41#ifdef HAVE_ISASTREAM
53 42# include <stropts.h>
54#ifdef DEBUG_TTY
55# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
56#else
57# define D_TTY(x)
58#endif 43#endif
44#if defined(HAVE_PTY_H)
45# include <pty.h>
46#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h>
48#elif defined(HAVE_UTIL_H)
49# include <util.h>
50#endif
51
52#include <cstdio>
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/*
64 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
65 * If successful, ttydev is set to the name of the slave device. 66 * If successful, ttydev is set to the name of the slave device.
66 * fd_tty _may_ also be set to an open fd to the slave device 67 * fd_tty _may_ also be set to an open fd to the slave device
67 */ 68 */
68/* EXTPROTO */ 69static inline int
69int
70rxvt_get_pty(int *fd_tty, const char **ttydev) 70get_pty_streams (int *fd_tty, char **ttydev)
71{ 71{
72 int pfd; 72#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
73# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
74 int pfd;
73 75
76# if defined(PTYS_ARE_GETPT)
77 pfd = getpt();
78# elif defined(PTYS_ARE_POSIX)
79 pfd = posix_openpt (O_RDWR);
80# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
82# endif
83 if (pfd >= 0)
84 {
85 if (grantpt (pfd) == 0 /* change slave permissions */
86 && unlockpt (pfd) == 0)
87 { /* slave now unlocked */
88 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
89 return pfd;
90 }
91
92 close (pfd);
93 }
94# endif
95#endif
96
97 return -1;
98}
99
100static inline int
101get_pty_openpty (int *fd_tty, char **ttydev)
102{
74#ifdef PTYS_ARE_OPENPTY 103#ifdef PTYS_ARE_OPENPTY
75 char tty_name[sizeof "/dev/pts/????\0"]; 104 int pfd;
76 105 int res;
106 char tty_name[32];
107
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) { 108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
109 if (res != -1)
110 {
78 *ttydev = strdup(tty_name); 111 *ttydev = strdup (tty_name);
79 return pfd; 112 return pfd;
80 } 113 }
81#endif 114#endif
82 115
116 return -1;
117}
118
119static inline int
120get_pty__getpty (int *fd_tty, char **ttydev)
121{
83#ifdef PTYS_ARE__GETPTY 122#ifdef PTYS_ARE__GETPTY
123 int pfd;
124
84 *ttydev = _getpty(&pfd, O_RDWR | O_NDELAY | O_NOCTTY, 0622, 0); 125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
85 if (*ttydev != NULL) 126 if (*ttydev != NULL)
86 return pfd;
87#endif
88
89#ifdef PTYS_ARE_GETPTY
90 char *ptydev;
91
92 while ((ptydev = getpty()) != NULL)
93 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) {
94 *ttydev = ptydev;
95 return pfd; 127 return pfd;
96 }
97#endif
98
99#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
100# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
101 {
102# ifdef PTYS_ARE_GETPT
103 pfd = getpt();
104# else
105 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
106# endif
107 if (pfd >= 0) {
108 if (grantpt(pfd) == 0 /* change slave permissions */
109 && unlockpt(pfd) == 0) { /* slave now unlocked */
110 *ttydev = ptsname(pfd); /* get slave's name */
111 return pfd;
112 }
113 close(pfd);
114 }
115 }
116# endif 128#endif
117#endif
118 129
130 return -1;
131}
132
133static inline int
134get_pty_ptc (int *fd_tty, char **ttydev)
135{
119#ifdef PTYS_ARE_PTC 136#ifdef PTYS_ARE_PTC
137 int pfd;
138
120 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { 139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
121 *ttydev = ttyname(pfd);
122 return pfd;
123 } 140 {
141 *ttydev = strdup (ttyname (pfd));
142 return pfd;
143 }
124#endif 144#endif
125 145
146 return -1;
147}
148
149static inline int
150get_pty_clone (int *fd_tty, char **ttydev)
151{
126#ifdef PTYS_ARE_CLONE 152#ifdef PTYS_ARE_CLONE
153 int pfd;
154
127 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) { 155 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
128 *ttydev = ptsname(pfd);
129 return pfd;
130 } 156 {
157 *ttydev = strdup (ptsname (pfd));
158 return pfd;
159 }
131#endif 160#endif
132 161
162 return -1;
163}
164
165static inline int
166get_pty_numeric (int *fd_tty, char **ttydev)
167{
133#ifdef PTYS_ARE_NUMERIC 168#ifdef PTYS_ARE_NUMERIC
134 { 169 int pfd;
135 int idx; 170 int idx;
136 char *c1, *c2; 171 char *c1, *c2;
137 char pty_name[] = "/dev/ptyp???"; 172 char pty_name[] = "/dev/ptyp???";
138 char tty_name[] = "/dev/ttyp???"; 173 char tty_name[] = "/dev/ttyp???";
139 174
140 c1 = &(pty_name[sizeof(pty_name) - 4]); 175 c1 = &(pty_name[sizeof (pty_name) - 4]);
141 c2 = &(tty_name[sizeof(tty_name) - 4]); 176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
142 for (idx = 0; idx < 256; idx++) { 178 for (idx = 0; idx < 256; idx++)
179 {
143 sprintf(c1, "%d", idx); 180 sprintf (c1, "%d", idx);
144 sprintf(c2, "%d", idx); 181 sprintf (c2, "%d", idx);
182
145 if (access(tty_name, F_OK) < 0) { 183 if (access (tty_name, F_OK) < 0)
146 idx = 256; 184 {
147 break; 185 idx = 256;
148 } 186 break;
187 }
188
149 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { 189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
190 {
150 if (access(tty_name, R_OK | W_OK) == 0) { 191 if (access (tty_name, R_OK | W_OK) == 0)
192 {
151 *ttydev = strdup(tty_name); 193 *ttydev = strdup (tty_name);
152 return pfd; 194 return pfd;
153 } 195 }
154 close(pfd); 196
197 close (pfd);
198 }
155 } 199 }
156 }
157 }
158#endif 200#endif
201
202 return -1;
203}
204
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
159#ifdef PTYS_ARE_SEARCHED 208#ifdef PTYS_ARE_SEARCHED
160 {
161 const char *c1, *c2;
162 char pty_name[] = "/dev/pty??";
163 char tty_name[] = "/dev/tty??";
164
165# ifndef PTYCHAR1 209# ifndef PTYCHAR1
166# define PTYCHAR1 "pqrstuvwxyz" 210# define PTYCHAR1 "pqrstuvwxyz"
167# endif 211# endif
168# ifndef PTYCHAR2 212# ifndef PTYCHAR2
169# define PTYCHAR2 "0123456789abcdef" 213# define PTYCHAR2 "0123456789abcdef"
170# endif 214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
219
171 for (c1 = PTYCHAR1; *c1; c1++) { 220 for (c1 = PTYCHAR1; *c1; c1++)
221 {
172 pty_name[(sizeof(pty_name) - 3)] = 222 pty_name[ (sizeof (pty_name) - 3)] =
173 tty_name[(sizeof(pty_name) - 3)] = *c1; 223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
174 for (c2 = PTYCHAR2; *c2; c2++) { 225 for (c2 = PTYCHAR2; *c2; c2++)
226 {
175 pty_name[(sizeof(pty_name) - 2)] = 227 pty_name[ (sizeof (pty_name) - 2)] =
176 tty_name[(sizeof(pty_name) - 2)] = *c2; 228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
177 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { 230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
231 {
178 if (access(tty_name, R_OK | W_OK) == 0) { 232 if (access (tty_name, R_OK | W_OK) == 0)
179 *ttydev = strdup(tty_name); 233 {
180 return pfd; 234 *ttydev = strdup (tty_name);
181 } 235 return pfd;
182 close(pfd); 236 }
183 } 237
238 close (pfd);
239 }
240 }
184 } 241 }
185 }
186 }
187#endif 242#endif
243
188 return -1; 244 return -1;
245}
246
247static int
248get_pty (int *fd_tty, char **ttydev)
249{
250 int pfd;
251
252 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
253 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
254 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
255 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
256 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
257 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
258 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
259 return pfd;
260
261 return -1;
189} 262}
190 263
191/*----------------------------------------------------------------------*/ 264/*----------------------------------------------------------------------*/
192/* 265/*
193 * Returns tty file descriptor, or -1 on failure 266 * Returns tty file descriptor, or -1 on failure
194 */ 267 */
195/* EXTPROTO */ 268static int
196int
197rxvt_get_tty(const char *ttydev) 269get_tty (char *ttydev)
198{ 270{
199 return open(ttydev, O_RDWR | O_NOCTTY, 0); 271 return open (ttydev, O_RDWR | O_NOCTTY, 0);
200} 272}
201 273
202/*----------------------------------------------------------------------*/ 274/*----------------------------------------------------------------------*/
203/* 275/*
204 * Make our tty a controlling tty so that /dev/tty points to us 276 * Make our tty a controlling tty so that /dev/tty points to us
205 */ 277 */
206/* EXTPROTO */ 278static int
207int 279control_tty (int fd_tty)
208rxvt_control_tty(int fd_tty, const char *ttydev)
209{ 280{
210#ifndef __QNX__
211 int fd;
212
213 D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev));
214/* ---------------------------------------- */
215# ifdef HAVE_SETSID
216 setsid(); 281 setsid ();
282
283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
284 /*
285 * Push STREAMS modules:
286 * ptem: pseudo-terminal hardware emulation module.
287 * ldterm: standard terminal line discipline.
288 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
289 *
290 * After we push the STREAMS modules, the first open () on the slave side
291 * (i.e. the next section between the dashes giving us "tty opened OK")
292 * should make the "ptem" (or "ldterm" depending upon either which OS
293 * version or which set of manual pages you have) module give us a
294 * controlling terminal. We must already have close ()d the master side
295 * fd in this child process before we push STREAMS modules on because the
296 * documentation is really unclear about whether it is any close () on
297 * the master side or the last close () - i.e. a proper STREAMS dismantling
298 * close () - on the master side which causes a hang up to be sent
299 * through - Geoff Wing
300 */
301# ifdef HAVE_ISASTREAM
302 if (isastream (fd_tty) == 1)
217# endif 303# endif
218# if defined(HAVE_SETPGID) 304 {
219 setpgid(0, 0); 305 ioctl (fd_tty, I_PUSH, "ptem");
220# elif defined(HAVE_SETPGRP) 306 ioctl (fd_tty, I_PUSH, "ldterm");
221 setpgrp(0, 0); 307 ioctl (fd_tty, I_PUSH, "ttcompat");
308 }
309#endif
310
311 ioctl (fd_tty, TIOCSCTTY, NULL);
312
313 int fd = open ("/dev/tty", O_WRONLY);
314 if (fd < 0)
315 return -1; /* fatal */
316
317 close (fd);
318
319 return 0;
320}
321
322void
323rxvt_ptytty::close_tty ()
324{
325 if (tty < 0)
326 return;
327
328 close (tty);
329 tty = -1;
330}
331
332bool
333rxvt_ptytty::make_controlling_tty ()
334{
335 return control_tty (tty) >= 0;
336}
337
338void
339rxvt_ptytty::set_utf8_mode (bool on)
340{
341#ifdef IUTF8
342 if (pty < 0)
343 return;
344
345 struct termios tio;
346
347 if (tcgetattr (pty, &tio) != -1)
348 {
349 tcflag_t new_cflag = tio.c_iflag;
350
351 if (on)
352 new_cflag |= IUTF8;
353 else
354 new_cflag &= ~IUTF8;
355
356 if (new_cflag != tio.c_iflag)
357 {
358 tio.c_iflag = new_cflag;
359 tcsetattr (pty, TCSANOW, &tio);
360 }
361 }
362#endif
363}
364
365static struct ttyconf {
366 gid_t gid;
367 mode_t mode;
368
369 ttyconf ()
370 {
371#ifdef TTY_GID_SUPPORT
372 struct group *gr = getgrnam ("tty");
373
374 if (gr)
375 { /* change group ownership of tty to "tty" */
376 mode = S_IRUSR | S_IWUSR | S_IWGRP;
377 gid = gr->gr_gid;
378 }
379 else
380#endif /* TTY_GID_SUPPORT */
381 {
382 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
383 gid = 0;
384 }
385 }
386} ttyconf;
387
388rxvt_ptytty_unix::rxvt_ptytty_unix ()
389{
390 pty = tty = -1;
391 name = 0;
392#if UTMP_SUPPORT
393 cmd_pid = 0;
394#endif
395}
396
397rxvt_ptytty_unix::~rxvt_ptytty_unix ()
398{
399#if UTMP_SUPPORT
400 logout ();
401#endif
402 put ();
403}
404
405void
406rxvt_ptytty_unix::put ()
407{
408 chmod (name, RESTORE_TTY_MODE);
409 chown (name, 0, ttyconf.gid);
410
411 close_tty ();
412
413 if (pty >= 0)
414 close (pty);
415
416 free (name);
417
418 pty = tty = -1;
419 name = 0;
420}
421
422bool
423rxvt_ptytty_unix::get ()
424{
425 /* get master (pty) */
426 if ((pty = get_pty (&tty, &name)) < 0)
427 return false;
428
429 fcntl (pty, F_SETFL, O_NONBLOCK);
430
431 /* get slave (tty) */
432 if (tty < 0)
433 {
434#ifndef NO_SETOWNER_TTYDEV
435 chown (name, getuid (), ttyconf.gid); /* fail silently */
436 chmod (name, ttyconf.mode);
437# ifdef HAVE_REVOKE
438 revoke (name);
222# endif 439# endif
223/* ---------------------------------------- */
224# ifdef TIOCNOTTY
225 fd = open("/dev/tty", O_RDWR | O_NOCTTY);
226 D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
227 if (fd >= 0) {
228 ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */
229 close(fd);
230 }
231# endif 440#endif
232/* ---------------------------------------- */ 441
233 fd = open("/dev/tty", O_RDWR | O_NOCTTY); 442 if ((tty = get_tty (name)) < 0)
234 D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); 443 {
235 if (fd >= 0) 444 put ();
236 close(fd); /* ouch: still have controlling tty */ 445 return false;
237/* ---------------------------------------- */ 446 }
238#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 447 }
239/* 448
240 * Push STREAMS modules: 449 return true;
241 * ptem: pseudo-terminal hardware emulation module. 450}
242 * ldterm: standard terminal line discipline. 451
243 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 452#if PTYTTY_HELPER
244 * 453
245 * After we push the STREAMS modules, the first open() on the slave side 454static int sock_fd;
246 * (i.e. the next section between the dashes giving us "tty opened OK") 455static int pid;
247 * should make the "ptem" (or "ldterm" depending upon either which OS 456
248 * version or which set of manual pages you have) module give us a 457struct command
249 * controlling terminal. We must already have close()d the master side 458{
250 * fd in this child process before we push STREAMS modules on because the 459 enum { get, login, destroy } type;
251 * documentation is really unclear about whether it is any close() on 460
252 * the master side or the last close() - i.e. a proper STREAMS dismantling 461 rxvt_ptytty *id;
253 * close() - on the master side which causes a hang up to be sent 462
254 * through - Geoff Wing 463 bool login_shell;
255 */ 464 int cmd_pid;
256# ifdef HAVE_ISASTREAM 465 char hostname[512]; // arbitrary, but should be plenty
257 if (isastream(fd_tty) == 1) 466};
467
468struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
469{
470 rxvt_ptytty *id;
471
472 ~rxvt_ptytty_proxy ();
473
474 bool get ();
475 void login (int cmd_pid, bool login_shell, const char *hostname);
476};
477
478bool
479rxvt_ptytty_proxy::get ()
480{
481 command cmd;
482
483 cmd.type = command::get;
484
485 write (sock_fd, &cmd, sizeof (cmd));
486
487 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
488 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
489
490 if (!id)
491 return false;
492
493 if ((pty = rxvt_recv_fd (sock_fd)) < 0
494 || (tty = rxvt_recv_fd (sock_fd)) < 0)
495 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
496
497 return true;
498}
499
500void
501rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
502{
503 command cmd;
504
505 cmd.type = command::login;
506 cmd.id = id;
507 cmd.cmd_pid = cmd_pid;
508 cmd.login_shell = login_shell;
509 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
510
511 write (sock_fd, &cmd, sizeof (cmd));
512}
513
514rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
515{
516 command cmd;
517
518 cmd.type = command::destroy;
519 cmd.id = id;
520
521 write (sock_fd, &cmd, sizeof (cmd));
522}
523
524static
525void serve ()
526{
527 command cmd;
528 vector<rxvt_ptytty *> ptys;
529
530 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
531 {
532 if (cmd.type == command::get)
533 {
534 // -> id ptyfd ttyfd
535 cmd.id = new rxvt_ptytty_unix;
536
537 if (cmd.id->get ())
538 {
539 write (sock_fd, &cmd.id, sizeof (cmd.id));
540 ptys.push_back (cmd.id);
541
542 rxvt_send_fd (sock_fd, cmd.id->pty);
543 rxvt_send_fd (sock_fd, cmd.id->tty);
544 }
545 else
546 {
547 delete cmd.id;
548 cmd.id = 0;
549 write (sock_fd, &cmd.id, sizeof (cmd.id));
550 }
551 }
552 else if (cmd.type == command::login)
553 {
554#if UTMP_SUPPORT
555 if (find (ptys.begin (), ptys.end (), cmd.id))
556 {
557 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
558 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
559 }
258# endif 560#endif
561 }
562 else if (cmd.type == command::destroy)
563 {
564 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
565
566 if (pty)
567 {
568 delete *pty;
569 ptys.erase (pty);
570 }
571 }
572 else
573 break;
259 { 574 }
260 D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 575
261 ioctl(fd_tty, I_PUSH, "ptem"); 576 // destroy all ptys
262 ioctl(fd_tty, I_PUSH, "ldterm"); 577 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
263 ioctl(fd_tty, I_PUSH, "ttcompat"); 578 delete *i;
579}
580
581void rxvt_ptytty_server ()
582{
583 int sv[2];
584
585 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
586 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
587
588 pid = fork ();
589
590 if (pid < 0)
591 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
592
593 if (pid)
264 } 594 {
265#endif 595 // client, urxvt
266/* ---------------------------------------- */ 596 sock_fd = sv[0];
267# if defined(TIOCSCTTY) 597 close (sv[1]);
268 fd = ioctl(fd_tty, TIOCSCTTY, NULL); 598 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
269 D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 599 }
270# elif defined(TIOCSETCTTY)
271 fd = ioctl(fd_tty, TIOCSETCTTY, NULL);
272 D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd));
273# else 600 else
274 fd = open(ttydev, O_RDWR); 601 {
275 D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 602 // server, pty-helper
276 if (fd >= 0) 603 sock_fd = sv[1];
277 close(fd); 604
605 for (int fd = 0; fd < 1023; fd++)
606 if (fd != sock_fd)
607 close (fd);
608
609 serve ();
610 _exit (EXIT_SUCCESS);
611 }
612}
613
278# endif 614#endif
279/* ---------------------------------------- */ 615
280 fd = open("/dev/tty", O_WRONLY); 616// a "factory" *g*
281 D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); 617rxvt_ptytty *
618rxvt_new_ptytty ()
619{
620#if PTYTTY_HELPER
282 if (fd < 0) 621 if (pid > 0)
283 return -1; /* fatal */ 622 // use helper process
284 close(fd); 623 return new rxvt_ptytty_proxy;
285/* ---------------------------------------- */ 624 else
286 D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 625#endif
287/* ---------------------------------------- */ 626 return new rxvt_ptytty_unix;
288#endif /* ! __QNX__ */
289 return 0;
290} 627}
628
291/*----------------------- end-of-file (C source) -----------------------*/ 629/*----------------------- end-of-file (C source) -----------------------*/
630

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