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Revision 1.52 by root, Thu Jan 19 20:30:36 2006 UTC vs.
Revision 1.71 by root, Mon Feb 21 07:41:02 2011 UTC

1// This file is part of libptytty. Do not make local modifications.
2// http://software.schmorp.de/pkg/libptytty
3
1/*--------------------------------*-C-*---------------------------------* 4/*----------------------------------------------------------------------*
2 * File: ptytty.C 5 * File: ptytty.C
3 *----------------------------------------------------------------------* 6 *----------------------------------------------------------------------*
4 * 7 *
5 * All portions of code are copyright by their respective author/s. 8 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 9 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
7 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> 10 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
11 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
8 * 12 *
9 * This program is free software; you can redistribute it and/or modify 13 * 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 14 * 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 15 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version. 16 * (at your option) any later version.
… …
19 * You should have received a copy of the GNU General Public License 23 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software 24 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *---------------------------------------------------------------------*/ 26 *---------------------------------------------------------------------*/
23 27
24#include "../config.h" /* NECESSARY */ 28#include "config.h"
29
25#include "rxvt.h" 30#include "ptytty.h"
26 31
27#include <cstdlib> 32#include <cstdlib>
28#include <cstring> 33#include <cstring>
34#include <csignal>
29 35
30#include <sys/types.h> 36#include <sys/types.h>
31#include <sys/socket.h> 37#include <sys/stat.h>
32#include <unistd.h> 38#include <unistd.h>
33#include <fcntl.h> 39#include <fcntl.h>
34 40
35#ifdef HAVE_SYS_IOCTL_H 41#ifdef HAVE_SYS_IOCTL_H
36# include <sys/ioctl.h> 42# include <sys/ioctl.h>
37#endif 43#endif
38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 44#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
39# include <sys/stropts.h> /* for I_PUSH */ 45# include <sys/stropts.h> /* for I_PUSH */
40#endif 46#endif
41#ifdef HAVE_ISASTREAM 47#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
42# include <stropts.h> 48# include <stropts.h>
43#endif 49#endif
44#if defined(HAVE_PTY_H) 50#if defined(HAVE_PTY_H)
45# include <pty.h> 51# include <pty.h>
46#elif defined(HAVE_LIBUTIL_H) 52#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h> 53# include <libutil.h>
48#elif defined(HAVE_UTIL_H) 54#elif defined(HAVE_UTIL_H)
49# include <util.h> 55# include <util.h>
50#endif 56#endif
57#ifdef TTY_GID_SUPPORT
58#include <grp.h>
59#endif
51 60
52#include <cstdio> 61#include <cstdio>
53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58 62
59///////////////////////////////////////////////////////////////////////////// 63/////////////////////////////////////////////////////////////////////////////
60 64
61/* ------------------------------------------------------------------------- * 65/* ------------------------------------------------------------------------- *
62 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 66 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
63 * ------------------------------------------------------------------------- */ 67 * ------------------------------------------------------------------------- */
64/* 68/*
65 * Returns pty file descriptor, or -1 on failure 69 * Returns pty file descriptor, or -1 on failure
66 * If successful, ttydev is set to the name of the slave device. 70 * If successful, ttydev is set to the name of the slave device.
67 * fd_tty _may_ also be set to an open fd to the slave device 71 * fd_tty _may_ also be set to an open fd to the slave device
68 */ 72 */
69static inline int 73#if defined(UNIX98_PTY)
74
75 static int
70get_pty_streams (int *fd_tty, char **ttydev) 76 get_pty (int *fd_tty, char **ttydev)
71{ 77 {
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; 78 int pfd;
75 79
76# if defined(PTYS_ARE_GETPT) 80# if defined(HAVE_GETPT)
77 pfd = getpt(); 81 pfd = getpt();
78# elif defined(PTYS_ARE_POSIX) 82# elif defined(HAVE_POSIX_OPENPT)
79 pfd = posix_openpt (O_RDWR); 83 pfd = posix_openpt (O_RDWR);
80# else 84# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 85 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
82# endif 86# endif
87
83 if (pfd >= 0) 88 if (pfd >= 0)
84 { 89 {
85 if (grantpt (pfd) == 0 /* change slave permissions */ 90 if (grantpt (pfd) == 0 /* change slave permissions */
86 && unlockpt (pfd) == 0) 91 && unlockpt (pfd) == 0)
92 {
87 { /* slave now unlocked */ 93 /* slave now unlocked */
88 *ttydev = strdup (ptsname (pfd)); /* get slave's name */ 94 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
89 return pfd; 95 return pfd;
90 } 96 }
91 97
92 close (pfd); 98 close (pfd);
93 } 99 }
94# endif
95#endif
96 100
97 return -1; 101 return -1;
98} 102 }
99 103
100static inline int 104#elif defined(HAVE_OPENPTY)
105
106 static int
101get_pty_openpty (int *fd_tty, char **ttydev) 107 get_pty (int *fd_tty, char **ttydev)
102{ 108 {
103#ifdef PTYS_ARE_OPENPTY
104 int pfd; 109 int pfd;
105 int res; 110 int res;
111
112 res = openpty (&pfd, fd_tty, NULL, NULL, NULL);
113
114 if (res != -1)
115 {
116 *ttydev = strdup (ttyname (*fd_tty));
117 return pfd;
118 }
119
120 return -1;
121 }
122
123#elif defined(HAVE__GETPTY)
124
125 static int
126 get_pty (int *fd_tty, char **ttydev)
127 {
128 int pfd;
129 char *slave;
130
131 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
132
133 if (slave != NULL)
134 {
135 *ttydev = strdup (slave);
136 return pfd;
137 }
138
139 return -1;
140 }
141
142#else
143
144 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
145 static int
146 get_pty (int *fd_tty, char **ttydev)
147 {
148 int pfd;
149 int i;
150 char pty_name[32];
106 char tty_name[32]; 151 char tty_name[32];
107 152 const char *majors = "pqrstuvwxyzabcde";
108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 153 const char *minors = "0123456789abcdef";
109 if (res != -1)
110 {
111 *ttydev = strdup (tty_name);
112 return pfd;
113 }
114#endif
115 154
116 return -1;
117}
118
119static inline int
120get_pty__getpty (int *fd_tty, char **ttydev)
121{
122#ifdef PTYS_ARE__GETPTY
123 int pfd;
124
125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
126 if (*ttydev != NULL)
127 return pfd;
128#endif
129
130 return -1;
131}
132
133static inline int
134get_pty_ptc (int *fd_tty, char **ttydev)
135{
136#ifdef PTYS_ARE_PTC
137 int pfd;
138
139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
140 {
141 *ttydev = strdup (ttyname (pfd));
142 return pfd;
143 }
144#endif
145
146 return -1;
147}
148
149static inline int
150get_pty_clone (int *fd_tty, char **ttydev)
151{
152#ifdef PTYS_ARE_CLONE
153 int pfd;
154
155 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
156 {
157 *ttydev = strdup (ptsname (pfd));
158 return pfd;
159 }
160#endif
161
162 return -1;
163}
164
165static inline int
166get_pty_numeric (int *fd_tty, char **ttydev)
167{
168#ifdef PTYS_ARE_NUMERIC
169 int pfd;
170 int idx;
171 char *c1, *c2;
172 char pty_name[] = "/dev/ptyp???";
173 char tty_name[] = "/dev/ttyp???";
174
175 c1 = &(pty_name[sizeof (pty_name) - 4]);
176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
178 for (idx = 0; idx < 256; idx++) 155 for (i = 0; i < 256; i++)
179 {
180 sprintf (c1, "%d", idx);
181 sprintf (c2, "%d", idx);
182
183 if (access (tty_name, F_OK) < 0)
184 { 156 {
185 idx = 256; 157 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
186 break; 158 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
187 }
188 159
189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 160 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
190 { 161 {
162 snprintf(pty_name, 32, "/dev/ptyp%d", i);
163 snprintf(tty_name, 32, "/dev/ttyp%d", i);
164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
165 continue;
166 }
167
191 if (access (tty_name, R_OK | W_OK) == 0) 168 if (access (tty_name, R_OK | W_OK) == 0)
192 { 169 {
193 *ttydev = strdup (tty_name); 170 *ttydev = strdup (tty_name);
194 return pfd; 171 return pfd;
195 } 172 }
196 173
197 close (pfd); 174 close (pfd);
198 } 175 }
199 }
200#endif
201 176
202 return -1; 177 return -1;
203} 178 }
204 179
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
208#ifdef PTYS_ARE_SEARCHED
209# ifndef PTYCHAR1
210# define PTYCHAR1 "pqrstuvwxyz"
211# endif 180#endif
212# ifndef PTYCHAR2
213# define PTYCHAR2 "0123456789abcdef"
214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
219
220 for (c1 = PTYCHAR1; *c1; c1++)
221 {
222 pty_name[ (sizeof (pty_name) - 3)] =
223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
225 for (c2 = PTYCHAR2; *c2; c2++)
226 {
227 pty_name[ (sizeof (pty_name) - 2)] =
228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
231 {
232 if (access (tty_name, R_OK | W_OK) == 0)
233 {
234 *ttydev = strdup (tty_name);
235 return pfd;
236 }
237
238 close (pfd);
239 }
240 }
241 }
242#endif
243
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;
262}
263 181
264/*----------------------------------------------------------------------*/ 182/*----------------------------------------------------------------------*/
265/* 183/*
266 * Returns tty file descriptor, or -1 on failure 184 * Returns tty file descriptor, or -1 on failure
267 */ 185 */
268static int 186static int
269get_tty (char *ttydev) 187get_tty (char *ttydev)
270{ 188{
271 return open (ttydev, O_RDWR | O_NOCTTY, 0); 189 return open (ttydev, O_RDWR | O_NOCTTY, 0);
… …
276 * Make our tty a controlling tty so that /dev/tty points to us 194 * Make our tty a controlling tty so that /dev/tty points to us
277 */ 195 */
278static int 196static int
279control_tty (int fd_tty) 197control_tty (int fd_tty)
280{ 198{
199 int fd;
200
281 setsid (); 201 setsid ();
282 202
283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 203#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
284 /* 204 /*
285 * Push STREAMS modules: 205 * Push STREAMS modules:
286 * ptem: pseudo-terminal hardware emulation module. 206 * ptem: pseudo-terminal hardware emulation module.
287 * ldterm: standard terminal line discipline. 207 * ldterm: standard terminal line discipline.
288 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 208 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
296 * documentation is really unclear about whether it is any close () on 216 * 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 217 * 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 218 * close () - on the master side which causes a hang up to be sent
299 * through - Geoff Wing 219 * through - Geoff Wing
300 */ 220 */
301# ifdef HAVE_ISASTREAM 221#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
302 if (isastream (fd_tty) == 1) 222 if (isastream (fd_tty) == 1)
303# endif 223# endif
304 { 224 {
305 ioctl (fd_tty, I_PUSH, "ptem"); 225 ioctl (fd_tty, I_PUSH, "ptem");
306 ioctl (fd_tty, I_PUSH, "ldterm"); 226 ioctl (fd_tty, I_PUSH, "ldterm");
307 ioctl (fd_tty, I_PUSH, "ttcompat"); 227 ioctl (fd_tty, I_PUSH, "ttcompat");
308 } 228 }
309#endif 229#endif
310 230
231#ifdef TIOCSCTTY
311 ioctl (fd_tty, TIOCSCTTY, NULL); 232 ioctl (fd_tty, TIOCSCTTY, NULL);
233#else
234 fd = open (ttyname (fd_tty), O_RDWR);
235 if (fd >= 0)
236 close (fd);
237#endif
312 238
313 int fd = open ("/dev/tty", O_WRONLY); 239 fd = open ("/dev/tty", O_WRONLY);
314 if (fd < 0) 240 if (fd < 0)
315 return -1; /* fatal */ 241 return -1; /* fatal */
316 242
317 close (fd); 243 close (fd);
318 244
319 return 0; 245 return 0;
320} 246}
321 247
322void 248void
323rxvt_ptytty::close_tty () 249ptytty::close_tty ()
324{ 250{
325 if (tty < 0) 251 if (tty < 0)
326 return; 252 return;
327 253
328 close (tty); 254 close (tty);
329 tty = -1; 255 tty = -1;
330} 256}
331 257
332bool 258bool
333rxvt_ptytty::make_controlling_tty () 259ptytty::make_controlling_tty ()
334{ 260{
335 return control_tty (tty) >= 0; 261 return control_tty (tty) >= 0;
336} 262}
337 263
338void 264void
339rxvt_ptytty::set_utf8_mode (bool on) 265ptytty::set_utf8_mode (bool on)
340{ 266{
341#ifdef IUTF8 267#ifdef IUTF8
342 if (pty < 0) 268 if (pty < 0)
343 return; 269 return;
344 270
… …
370 { 296 {
371#ifdef TTY_GID_SUPPORT 297#ifdef TTY_GID_SUPPORT
372 struct group *gr = getgrnam ("tty"); 298 struct group *gr = getgrnam ("tty");
373 299
374 if (gr) 300 if (gr)
301 {
375 { /* change group ownership of tty to "tty" */ 302 /* change group ownership of tty to "tty" */
376 mode = S_IRUSR | S_IWUSR | S_IWGRP; 303 mode = S_IRUSR | S_IWUSR | S_IWGRP;
377 gid = gr->gr_gid; 304 gid = gr->gr_gid;
378 } 305 }
379 else 306 else
380#endif /* TTY_GID_SUPPORT */ 307#endif /* TTY_GID_SUPPORT */
381 { 308 {
382 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 309 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
383 gid = 0; 310 gid = 0;
384 } 311 }
385 } 312 }
386} ttyconf; 313} ttyconf;
387 314
388rxvt_ptytty_unix::rxvt_ptytty_unix () 315ptytty_unix::ptytty_unix ()
389{ 316{
390 name = 0; 317 name = 0;
391#if UTMP_SUPPORT 318#if UTMP_SUPPORT
392 cmd_pid = 0; 319 cmd_pid = 0;
393#endif 320#endif
394} 321}
395 322
396rxvt_ptytty_unix::~rxvt_ptytty_unix () 323ptytty_unix::~ptytty_unix ()
397{ 324{
398#if UTMP_SUPPORT 325#if UTMP_SUPPORT
399 logout (); 326 logout ();
400#endif 327#endif
401 put (); 328 put ();
402} 329}
403 330
404void 331void
405rxvt_ptytty_unix::put () 332ptytty_unix::put ()
406{ 333{
334 if (name)
335 {
407 chmod (name, RESTORE_TTY_MODE); 336 chmod (name, RESTORE_TTY_MODE);
408 chown (name, 0, ttyconf.gid); 337 chown (name, 0, ttyconf.gid);
338 }
409 339
410 close_tty (); 340 close_tty ();
411 341
412 if (pty >= 0) 342 if (pty >= 0)
413 close (pty); 343 close (pty);
… …
417 pty = tty = -1; 347 pty = tty = -1;
418 name = 0; 348 name = 0;
419} 349}
420 350
421bool 351bool
422rxvt_ptytty_unix::get () 352ptytty_unix::get ()
423{ 353{
424 /* get master (pty) */ 354 /* get master (pty) */
425 if ((pty = get_pty (&tty, &name)) < 0) 355 if ((pty = get_pty (&tty, &name)) < 0)
426 return false; 356 return false;
427 357
… …
446 } 376 }
447 377
448 return true; 378 return true;
449} 379}
450 380
451#if PTYTTY_HELPER
452
453static int sock_fd;
454static int pid;
455
456struct command
457{
458 enum { get, login, destroy } type;
459
460 rxvt_ptytty *id;
461
462 bool login_shell;
463 int cmd_pid;
464 char hostname[512]; // arbitrary, but should be plenty
465};
466
467struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
468{
469 rxvt_ptytty *id;
470
471 ~rxvt_ptytty_proxy ();
472
473 bool get ();
474 void login (int cmd_pid, bool login_shell, const char *hostname);
475};
476
477bool
478rxvt_ptytty_proxy::get ()
479{
480 command cmd;
481
482 cmd.type = command::get;
483
484 write (sock_fd, &cmd, sizeof (cmd));
485
486 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
487 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
488
489 if (!id)
490 return false;
491
492 if ((pty = rxvt_recv_fd (sock_fd)) < 0
493 || (tty = rxvt_recv_fd (sock_fd)) < 0)
494 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
495
496 return true;
497}
498
499void
500rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
501{
502 command cmd;
503
504 cmd.type = command::login;
505 cmd.id = id;
506 cmd.cmd_pid = cmd_pid;
507 cmd.login_shell = login_shell;
508 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
509
510 write (sock_fd, &cmd, sizeof (cmd));
511}
512
513rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
514{
515 command cmd;
516
517 cmd.type = command::destroy;
518 cmd.id = id;
519
520 write (sock_fd, &cmd, sizeof (cmd));
521}
522
523static
524void serve ()
525{
526 command cmd;
527 vector<rxvt_ptytty *> ptys;
528
529 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
530 {
531 if (cmd.type == command::get)
532 {
533 // -> id ptyfd ttyfd
534 cmd.id = new rxvt_ptytty_unix;
535
536 if (cmd.id->get ())
537 {
538 write (sock_fd, &cmd.id, sizeof (cmd.id));
539 ptys.push_back (cmd.id);
540
541 rxvt_send_fd (sock_fd, cmd.id->pty);
542 rxvt_send_fd (sock_fd, cmd.id->tty);
543 }
544 else
545 {
546 delete cmd.id;
547 cmd.id = 0;
548 write (sock_fd, &cmd.id, sizeof (cmd.id));
549 }
550 }
551 else if (cmd.type == command::login)
552 {
553#if UTMP_SUPPORT
554 if (find (ptys.begin (), ptys.end (), cmd.id))
555 {
556 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
557 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
558 }
559#endif
560 }
561 else if (cmd.type == command::destroy)
562 {
563 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
564
565 if (pty)
566 {
567 delete *pty;
568 ptys.erase (pty);
569 }
570 }
571 else
572 break;
573 }
574
575 // destroy all ptys
576 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
577 delete *i;
578}
579
580void rxvt_ptytty_server ()
581{
582 int sv[2];
583
584 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
585 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
586
587 pid = fork ();
588
589 if (pid < 0)
590 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
591
592 if (pid)
593 {
594 // client, urxvt
595 sock_fd = sv[0];
596 close (sv[1]);
597 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
598 }
599 else
600 {
601 // server, pty-helper
602 sock_fd = sv[1];
603
604 for (int fd = 0; fd < 1023; fd++)
605 if (fd != sock_fd)
606 close (fd);
607
608 serve ();
609 _exit (EXIT_SUCCESS);
610 }
611}
612
613#endif
614
615// a "factory" *g*
616rxvt_ptytty *
617rxvt_new_ptytty ()
618{
619#if PTYTTY_HELPER
620 if (pid > 0)
621 // use helper process
622 return new rxvt_ptytty_proxy;
623 else
624#endif
625 return new rxvt_ptytty_unix;
626}
627
628/*----------------------- end-of-file (C source) -----------------------*/
629

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