|
|
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 <pcg@goof.com> |
|
|
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" |
25 | |
29 | |
26 | #include "fdpass.h" |
|
|
27 | #include "ptytty.h" |
30 | #include "ptytty.h" |
28 | |
31 | |
29 | #include <cstdlib> |
32 | #include <cstdlib> |
30 | #include <cstring> |
33 | #include <cstring> |
|
|
34 | #include <csignal> |
31 | |
35 | |
32 | #include <sys/types.h> |
36 | #include <sys/types.h> |
33 | #include <sys/socket.h> |
|
|
34 | #include <unistd.h> |
37 | #include <unistd.h> |
35 | #include <fcntl.h> |
38 | #include <fcntl.h> |
36 | |
39 | |
37 | #ifdef HAVE_SYS_IOCTL_H |
40 | #ifdef HAVE_SYS_IOCTL_H |
38 | # include <sys/ioctl.h> |
41 | # include <sys/ioctl.h> |
… | |
… | |
60 | |
63 | |
61 | /* ------------------------------------------------------------------------- * |
64 | /* ------------------------------------------------------------------------- * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
65 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
63 | * ------------------------------------------------------------------------- */ |
66 | * ------------------------------------------------------------------------- */ |
64 | /* |
67 | /* |
65 | * Returns pty file descriptor, or -1 on failure |
68 | * Returns pty file descriptor, or -1 on failure |
66 | * If successful, ttydev is set to the name of the slave device. |
69 | * 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 |
70 | * fd_tty _may_ also be set to an open fd to the slave device |
68 | */ |
71 | */ |
69 | #if defined(UNIX98_PTY) |
72 | #if defined(UNIX98_PTY) |
|
|
73 | |
70 | static int |
74 | static int |
71 | get_pty (int *fd_tty, char **ttydev) |
75 | get_pty (int *fd_tty, char **ttydev) |
72 | { |
76 | { |
73 | int pfd; |
77 | int pfd; |
74 | |
78 | |
75 | # if defined(HAVE_GETPT) |
79 | # if defined(HAVE_GETPT) |
76 | pfd = getpt(); |
80 | pfd = getpt(); |
77 | # elif defined(HAVE_POSIX_OPENPT) |
81 | # elif defined(HAVE_POSIX_OPENPT) |
78 | pfd = posix_openpt (O_RDWR); |
82 | pfd = posix_openpt (O_RDWR); |
79 | # else |
83 | # else |
80 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
84 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
81 | # endif |
85 | # endif |
|
|
86 | |
82 | if (pfd >= 0) |
87 | if (pfd >= 0) |
83 | { |
88 | { |
84 | if (grantpt (pfd) == 0 /* change slave permissions */ |
89 | if (grantpt (pfd) == 0 /* change slave permissions */ |
85 | && unlockpt (pfd) == 0) |
90 | && unlockpt (pfd) == 0) |
|
|
91 | { |
86 | { /* slave now unlocked */ |
92 | /* slave now unlocked */ |
87 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
93 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
88 | return pfd; |
94 | return pfd; |
89 | } |
95 | } |
90 | |
96 | |
91 | close (pfd); |
97 | close (pfd); |
92 | } |
98 | } |
93 | |
99 | |
94 | return -1; |
100 | return -1; |
95 | } |
101 | } |
|
|
102 | |
96 | #elif defined(HAVE_OPENPTY) |
103 | #elif defined(HAVE_OPENPTY) |
|
|
104 | |
97 | static int |
105 | static int |
98 | get_pty (int *fd_tty, char **ttydev) |
106 | get_pty (int *fd_tty, char **ttydev) |
99 | { |
107 | { |
100 | int pfd; |
108 | int pfd; |
101 | int res; |
109 | int res; |
102 | char tty_name[32]; |
110 | |
103 | |
|
|
104 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
111 | res = openpty (&pfd, fd_tty, NULL, NULL, NULL); |
|
|
112 | |
105 | if (res != -1) |
113 | if (res != -1) |
106 | { |
114 | { |
|
|
115 | *ttydev = strdup (ttyname (*fd_tty)); |
|
|
116 | return pfd; |
|
|
117 | } |
|
|
118 | |
|
|
119 | return -1; |
|
|
120 | } |
|
|
121 | |
|
|
122 | #elif defined(HAVE__GETPTY) |
|
|
123 | |
|
|
124 | static int |
|
|
125 | get_pty (int *fd_tty, char **ttydev) |
|
|
126 | { |
|
|
127 | int pfd; |
|
|
128 | char *slave; |
|
|
129 | |
|
|
130 | slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
|
|
131 | |
|
|
132 | if (slave != NULL) { |
107 | *ttydev = strdup (tty_name); |
133 | *ttydev = strdup (slave); |
108 | return pfd; |
134 | return pfd; |
109 | } |
135 | } |
110 | |
136 | |
111 | return -1; |
137 | return -1; |
112 | } |
138 | } |
113 | #elif defined(HAVE__GETPTY) |
|
|
114 | static int |
|
|
115 | get_pty (int *fd_tty, char **ttydev) |
|
|
116 | { |
|
|
117 | int pfd; |
|
|
118 | |
139 | |
119 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
|
|
120 | if (*ttydev != NULL) |
|
|
121 | return pfd; |
|
|
122 | |
|
|
123 | return -1; |
|
|
124 | } |
|
|
125 | #elif defined(HAVE_DEV_PTC) |
140 | #elif defined(HAVE_DEV_PTC) |
|
|
141 | |
126 | static int |
142 | static int |
127 | get_pty (int *fd_tty, char **ttydev) |
143 | get_pty (int *fd_tty, char **ttydev) |
128 | { |
144 | { |
129 | int pfd; |
145 | int pfd; |
130 | |
146 | |
131 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
147 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
132 | { |
148 | { |
133 | *ttydev = strdup (ttyname (pfd)); |
149 | *ttydev = strdup (ttyname (pfd)); |
134 | return pfd; |
150 | return pfd; |
135 | } |
151 | } |
136 | |
152 | |
137 | return -1; |
153 | return -1; |
138 | } |
154 | } |
|
|
155 | |
139 | #elif defined(HAVE_DEV_CLONE) |
156 | #elif defined(HAVE_DEV_CLONE) |
|
|
157 | |
140 | static int |
158 | static int |
141 | get_pty (int *fd_tty, char **ttydev) |
159 | get_pty (int *fd_tty, char **ttydev) |
142 | { |
160 | { |
143 | int pfd; |
161 | int pfd; |
144 | |
162 | |
145 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
163 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
146 | { |
164 | { |
147 | *ttydev = strdup (ptsname (pfd)); |
165 | *ttydev = strdup (ptsname (pfd)); |
148 | return pfd; |
166 | return pfd; |
149 | } |
167 | } |
150 | |
168 | |
151 | return -1; |
169 | return -1; |
152 | } |
170 | } |
|
|
171 | |
153 | #else |
172 | #else |
|
|
173 | |
154 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
174 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
155 | static int |
175 | static int |
156 | get_pty (int *fd_tty, char **ttydev) |
176 | get_pty (int *fd_tty, char **ttydev) |
157 | { |
177 | { |
158 | int pfd; |
178 | int pfd; |
159 | int i; |
179 | int i; |
160 | char pty_name[32]; |
180 | char pty_name[32]; |
161 | char tty_name[32]; |
181 | char tty_name[32]; |
162 | const char *majors = "pqrstuvwxyzabcde"; |
182 | const char *majors = "pqrstuvwxyzabcde"; |
163 | const char *minors = "0123456789abcdef"; |
183 | const char *minors = "0123456789abcdef"; |
|
|
184 | |
164 | for (i = 0; i < 256; i++) |
185 | for (i = 0; i < 256; i++) |
165 | { |
186 | { |
166 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
187 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
167 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
188 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
|
|
189 | |
168 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
190 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
169 | { |
191 | { |
170 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
192 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
171 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
193 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
172 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
194 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
173 | continue; |
195 | continue; |
174 | } |
196 | } |
|
|
197 | |
175 | if (access (tty_name, R_OK | W_OK) == 0) |
198 | if (access (tty_name, R_OK | W_OK) == 0) |
176 | { |
199 | { |
177 | *ttydev = strdup (tty_name); |
200 | *ttydev = strdup (tty_name); |
178 | return pfd; |
201 | return pfd; |
179 | } |
202 | } |
180 | |
203 | |
181 | close (pfd); |
204 | close (pfd); |
182 | } |
205 | } |
183 | } |
206 | |
|
|
207 | return -1; |
|
|
208 | } |
|
|
209 | |
184 | #endif |
210 | #endif |
185 | |
211 | |
186 | /*----------------------------------------------------------------------*/ |
212 | /*----------------------------------------------------------------------*/ |
187 | /* |
213 | /* |
188 | * Returns tty file descriptor, or -1 on failure |
214 | * Returns tty file descriptor, or -1 on failure |
189 | */ |
215 | */ |
190 | static int |
216 | static int |
191 | get_tty (char *ttydev) |
217 | get_tty (char *ttydev) |
192 | { |
218 | { |
193 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
219 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
… | |
… | |
198 | * 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 |
199 | */ |
225 | */ |
200 | static int |
226 | static int |
201 | control_tty (int fd_tty) |
227 | control_tty (int fd_tty) |
202 | { |
228 | { |
|
|
229 | int fd; |
|
|
230 | |
203 | setsid (); |
231 | setsid (); |
204 | |
232 | |
205 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
233 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
206 | /* |
234 | /* |
207 | * Push STREAMS modules: |
235 | * Push STREAMS modules: |
… | |
… | |
228 | ioctl (fd_tty, I_PUSH, "ldterm"); |
256 | ioctl (fd_tty, I_PUSH, "ldterm"); |
229 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
257 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
230 | } |
258 | } |
231 | #endif |
259 | #endif |
232 | |
260 | |
|
|
261 | #ifdef TIOCSCTTY |
233 | ioctl (fd_tty, TIOCSCTTY, NULL); |
262 | ioctl (fd_tty, TIOCSCTTY, NULL); |
|
|
263 | #else |
|
|
264 | fd = open (ttyname (fd_tty), O_RDWR); |
|
|
265 | if (fd >= 0) |
|
|
266 | close (fd); |
|
|
267 | #endif |
234 | |
268 | |
235 | int fd = open ("/dev/tty", O_WRONLY); |
269 | fd = open ("/dev/tty", O_WRONLY); |
236 | if (fd < 0) |
270 | if (fd < 0) |
237 | return -1; /* fatal */ |
271 | return -1; /* fatal */ |
238 | |
272 | |
239 | close (fd); |
273 | close (fd); |
240 | |
274 | |
241 | return 0; |
275 | return 0; |
242 | } |
276 | } |
… | |
… | |
292 | { |
326 | { |
293 | #ifdef TTY_GID_SUPPORT |
327 | #ifdef TTY_GID_SUPPORT |
294 | struct group *gr = getgrnam ("tty"); |
328 | struct group *gr = getgrnam ("tty"); |
295 | |
329 | |
296 | if (gr) |
330 | if (gr) |
|
|
331 | { |
297 | { /* change group ownership of tty to "tty" */ |
332 | /* change group ownership of tty to "tty" */ |
298 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
333 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
299 | gid = gr->gr_gid; |
334 | gid = gr->gr_gid; |
300 | } |
335 | } |
301 | else |
336 | else |
302 | #endif /* TTY_GID_SUPPORT */ |
337 | #endif /* TTY_GID_SUPPORT */ |
303 | { |
338 | { |
304 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
339 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
305 | gid = 0; |
340 | gid = 0; |
306 | } |
341 | } |
307 | } |
342 | } |
… | |
… | |
324 | } |
359 | } |
325 | |
360 | |
326 | void |
361 | void |
327 | ptytty_unix::put () |
362 | ptytty_unix::put () |
328 | { |
363 | { |
|
|
364 | if (name) |
|
|
365 | { |
329 | chmod (name, RESTORE_TTY_MODE); |
366 | chmod (name, RESTORE_TTY_MODE); |
330 | chown (name, 0, ttyconf.gid); |
367 | chown (name, 0, ttyconf.gid); |
|
|
368 | } |
331 | |
369 | |
332 | close_tty (); |
370 | close_tty (); |
333 | |
371 | |
334 | if (pty >= 0) |
372 | if (pty >= 0) |
335 | close (pty); |
373 | close (pty); |
… | |
… | |
368 | } |
406 | } |
369 | |
407 | |
370 | return true; |
408 | return true; |
371 | } |
409 | } |
372 | |
410 | |
373 | #if PTYTTY_HELPER |
|
|
374 | |
|
|
375 | static int sock_fd; |
|
|
376 | static int pid; |
|
|
377 | |
|
|
378 | struct command |
|
|
379 | { |
|
|
380 | enum { get, login, destroy } type; |
|
|
381 | |
|
|
382 | ptytty *id; |
|
|
383 | |
|
|
384 | bool login_shell; |
|
|
385 | int cmd_pid; |
|
|
386 | char hostname[512]; // arbitrary, but should be plenty |
|
|
387 | }; |
|
|
388 | |
|
|
389 | struct ptytty_proxy : ptytty |
|
|
390 | { |
|
|
391 | ptytty *id; |
|
|
392 | |
|
|
393 | ptytty_proxy () |
|
|
394 | : id(0) |
|
|
395 | { |
|
|
396 | } |
|
|
397 | |
|
|
398 | ~ptytty_proxy (); |
|
|
399 | |
|
|
400 | bool get (); |
|
|
401 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
402 | }; |
|
|
403 | |
|
|
404 | bool |
|
|
405 | ptytty_proxy::get () |
|
|
406 | { |
|
|
407 | command cmd; |
|
|
408 | |
|
|
409 | cmd.type = command::get; |
|
|
410 | |
|
|
411 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
412 | |
|
|
413 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
414 | fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
415 | |
|
|
416 | if (!id) |
|
|
417 | return false; |
|
|
418 | |
|
|
419 | if ((pty = ptytty_recv_fd (sock_fd)) < 0 |
|
|
420 | || (tty = ptytty_recv_fd (sock_fd)) < 0) |
|
|
421 | fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
422 | |
|
|
423 | return true; |
|
|
424 | } |
|
|
425 | |
|
|
426 | void |
|
|
427 | ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
|
|
428 | { |
|
|
429 | command cmd; |
|
|
430 | |
|
|
431 | cmd.type = command::login; |
|
|
432 | cmd.id = id; |
|
|
433 | cmd.cmd_pid = cmd_pid; |
|
|
434 | cmd.login_shell = login_shell; |
|
|
435 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
|
|
436 | |
|
|
437 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
438 | } |
|
|
439 | |
|
|
440 | ptytty_proxy::~ptytty_proxy () |
|
|
441 | { |
|
|
442 | if (id) |
|
|
443 | { |
|
|
444 | command cmd; |
|
|
445 | |
|
|
446 | cmd.type = command::destroy; |
|
|
447 | cmd.id = id; |
|
|
448 | |
|
|
449 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
450 | } |
|
|
451 | } |
|
|
452 | |
|
|
453 | static |
|
|
454 | void serve () |
|
|
455 | { |
|
|
456 | command cmd; |
|
|
457 | vector<ptytty *> ptys; |
|
|
458 | |
|
|
459 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
460 | { |
|
|
461 | if (cmd.type == command::get) |
|
|
462 | { |
|
|
463 | // -> id ptyfd ttyfd |
|
|
464 | cmd.id = new ptytty_unix; |
|
|
465 | |
|
|
466 | if (cmd.id->get ()) |
|
|
467 | { |
|
|
468 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
469 | ptys.push_back (cmd.id); |
|
|
470 | |
|
|
471 | ptytty_send_fd (sock_fd, cmd.id->pty); |
|
|
472 | ptytty_send_fd (sock_fd, cmd.id->tty); |
|
|
473 | } |
|
|
474 | else |
|
|
475 | { |
|
|
476 | delete cmd.id; |
|
|
477 | cmd.id = 0; |
|
|
478 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
479 | } |
|
|
480 | } |
|
|
481 | else if (cmd.type == command::login) |
|
|
482 | { |
|
|
483 | #if UTMP_SUPPORT |
|
|
484 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
485 | { |
|
|
486 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
487 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
488 | } |
|
|
489 | #endif |
|
|
490 | } |
|
|
491 | else if (cmd.type == command::destroy) |
|
|
492 | { |
|
|
493 | ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
494 | |
|
|
495 | if (pty) |
|
|
496 | { |
|
|
497 | delete *pty; |
|
|
498 | ptys.erase (pty); |
|
|
499 | } |
|
|
500 | } |
|
|
501 | else |
|
|
502 | break; |
|
|
503 | } |
|
|
504 | |
|
|
505 | // destroy all ptys |
|
|
506 | for (ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
|
|
507 | delete *i; |
|
|
508 | } |
|
|
509 | |
|
|
510 | void ptytty_server () |
|
|
511 | { |
|
|
512 | int sv[2]; |
|
|
513 | |
|
|
514 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
515 | fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
516 | |
|
|
517 | pid = fork (); |
|
|
518 | |
|
|
519 | if (pid < 0) |
|
|
520 | fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
521 | |
|
|
522 | if (pid) |
|
|
523 | { |
|
|
524 | // client, process |
|
|
525 | sock_fd = sv[0]; |
|
|
526 | close (sv[1]); |
|
|
527 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
528 | } |
|
|
529 | else |
|
|
530 | { |
|
|
531 | // server, pty-helper |
|
|
532 | sock_fd = sv[1]; |
|
|
533 | |
|
|
534 | for (int fd = 0; fd < 1023; fd++) |
|
|
535 | if (fd != sock_fd) |
|
|
536 | close (fd); |
|
|
537 | |
|
|
538 | serve (); |
|
|
539 | _exit (EXIT_SUCCESS); |
|
|
540 | } |
|
|
541 | } |
|
|
542 | |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | // a "factory" *g* |
|
|
546 | ptytty * |
|
|
547 | new_ptytty () |
|
|
548 | { |
|
|
549 | #if PTYTTY_HELPER |
|
|
550 | if (pid > 0) |
|
|
551 | // use helper process |
|
|
552 | return new ptytty_proxy; |
|
|
553 | else |
|
|
554 | #endif |
|
|
555 | return new ptytty_unix; |
|
|
556 | } |
|
|
557 | |
|
|
558 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
559 | |
|
|