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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.48 by ayin, Thu Jan 19 10:44:44 2006 UTC vs.
Revision 1.67 by ayin, Mon Nov 19 11:26:34 2007 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 <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"
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>
32#include <unistd.h> 37#include <unistd.h>
33#include <fcntl.h> 38#include <fcntl.h>
34 39
35#ifdef HAVE_SYS_IOCTL_H 40#ifdef HAVE_SYS_IOCTL_H
36# include <sys/ioctl.h> 41# include <sys/ioctl.h>
37#endif 42#endif
38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 43#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
39# include <sys/stropts.h> /* for I_PUSH */ 44# include <sys/stropts.h> /* for I_PUSH */
40#endif 45#endif
41#ifdef HAVE_ISASTREAM 46#ifdef HAVE_ISASTREAM
42# include <stropts.h> 47# include <stropts.h>
43#endif 48#endif
… …
46#elif defined(HAVE_LIBUTIL_H) 51#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h> 52# include <libutil.h>
48#elif defined(HAVE_UTIL_H) 53#elif defined(HAVE_UTIL_H)
49# include <util.h> 54# include <util.h>
50#endif 55#endif
56#ifdef TTY_GID_SUPPORT
57#include <grp.h>
58#endif
51 59
52#include <cstdio> 60#include <cstdio>
53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58 61
59///////////////////////////////////////////////////////////////////////////// 62/////////////////////////////////////////////////////////////////////////////
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 */
69static inline int 72#if defined(UNIX98_PTY)
73
74 static int
70get_pty_streams (int *fd_tty, char **ttydev) 75 get_pty (int *fd_tty, char **ttydev)
71{ 76 {
72#ifdef NO_SETOWNER_TTYDEV
73 int pfd; 77 int pfd;
74 78
75# if defined(PTYS_ARE_GETPT) 79# if defined(HAVE_GETPT)
76 pfd = getpt(); 80 pfd = getpt();
77# elif defined(PTYS_ARE_POSIX) 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 ("/dev/ptmx", 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)
86 { /* slave now unlocked */ 91 { /* slave now unlocked */
87 *ttydev = strdup (ptsname (pfd)); /* get slave's name */ 92 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
88 return pfd; 93 return pfd;
89 } 94 }
90 95
91 close (pfd); 96 close (pfd);
92 } 97 }
93#endif
94 98
95 return -1; 99 return -1;
96} 100 }
97 101
98static inline int 102#elif defined(HAVE_OPENPTY)
103
104 static int
99get_pty_openpty (int *fd_tty, char **ttydev) 105 get_pty (int *fd_tty, char **ttydev)
100{ 106 {
101#ifdef PTYS_ARE_OPENPTY
102 int pfd; 107 int pfd;
103 int res; 108 int res;
104 char tty_name[sizeof "/dev/pts/????\0"]; 109
105
106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 110 res = openpty (&pfd, fd_tty, NULL, NULL, NULL);
111
107 if (res != -1) 112 if (res != -1)
108 { 113 {
114 *ttydev = strdup (ttyname (*fd_tty));
115 return pfd;
116 }
117
118 return -1;
119 }
120
121#elif defined(HAVE__GETPTY)
122
123 static int
124 get_pty (int *fd_tty, char **ttydev)
125 {
126 int pfd;
127 char *slave;
128
129 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
130
131 if (slave != NULL) {
109 *ttydev = strdup (tty_name); 132 *ttydev = strdup (slave);
110 return pfd; 133 return pfd;
111 } 134 }
112#endif
113 135
114 return -1; 136 return -1;
115} 137 }
116 138
117static inline int 139#elif defined(HAVE_DEV_PTC)
118get_pty__getpty (int *fd_tty, char **ttydev)
119{
120#ifdef PTYS_ARE__GETPTY
121 int pfd;
122 140
123 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 141 static int
124 if (*ttydev != NULL)
125 return pfd;
126#endif
127
128 return -1;
129}
130
131static inline int
132get_pty_ptc (int *fd_tty, char **ttydev) 142 get_pty (int *fd_tty, char **ttydev)
133{ 143 {
134#ifdef PTYS_ARE_PTC
135 int pfd; 144 int pfd;
136 145
137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 146 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
138 { 147 {
139 *ttydev = strdup (ttyname (pfd)); 148 *ttydev = strdup (ttyname (pfd));
140 return pfd; 149 return pfd;
141 } 150 }
142#endif
143 151
144 return -1; 152 return -1;
145} 153 }
146 154
147static inline int 155#elif defined(HAVE_DEV_CLONE)
156
157 static int
148get_pty_clone (int *fd_tty, char **ttydev) 158 get_pty (int *fd_tty, char **ttydev)
149{ 159 {
150#ifdef PTYS_ARE_CLONE
151 int pfd; 160 int pfd;
152 161
153 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 162 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
154 { 163 {
155 *ttydev = strdup (ptsname (pfd)); 164 *ttydev = strdup (ptsname (pfd));
156 return pfd; 165 return pfd;
157 } 166 }
158#endif
159 167
160 return -1; 168 return -1;
161} 169 }
162 170
163static inline int 171#else
172
173 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
174 static int
164get_pty_numeric (int *fd_tty, char **ttydev) 175 get_pty (int *fd_tty, char **ttydev)
165{ 176 {
166#ifdef PTYS_ARE_NUMERIC
167 int pfd; 177 int pfd;
168 int idx; 178 int i;
169 char *c1, *c2; 179 char pty_name[32];
170 char pty_name[] = "/dev/ptyp???"; 180 char tty_name[32];
171 char tty_name[] = "/dev/ttyp???"; 181 const char *majors = "pqrstuvwxyzabcde";
182 const char *minors = "0123456789abcdef";
172 183
173 c1 = &(pty_name[sizeof (pty_name) - 4]);
174 c2 = &(tty_name[sizeof (tty_name) - 4]);
175
176 for (idx = 0; idx < 256; idx++) 184 for (i = 0; i < 256; i++)
177 {
178 sprintf (c1, "%d", idx);
179 sprintf (c2, "%d", idx);
180
181 if (access (tty_name, F_OK) < 0)
182 { 185 {
183 idx = 256; 186 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
184 break; 187 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
185 }
186 188
187 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
188 { 190 {
191 snprintf(pty_name, 32, "/dev/ptyp%d", i);
192 snprintf(tty_name, 32, "/dev/ttyp%d", i);
193 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
194 continue;
195 }
196
189 if (access (tty_name, R_OK | W_OK) == 0) 197 if (access (tty_name, R_OK | W_OK) == 0)
190 { 198 {
191 *ttydev = strdup (tty_name); 199 *ttydev = strdup (tty_name);
192 return pfd; 200 return pfd;
193 } 201 }
194 202
195 close (pfd); 203 close (pfd);
196 } 204 }
197 }
198#endif
199 205
200 return -1; 206 return -1;
201} 207 }
202 208
203static inline int
204get_pty_searched (int *fd_tty, char **ttydev)
205{
206#ifdef PTYS_ARE_SEARCHED
207# ifndef PTYCHAR1
208# define PTYCHAR1 "pqrstuvwxyz"
209# endif 209#endif
210# ifndef PTYCHAR2
211# define PTYCHAR2 "0123456789abcdef"
212# endif
213 int pfd;
214 const char *c1, *c2;
215 char pty_name[] = "/dev/pty??";
216 char tty_name[] = "/dev/tty??";
217
218 for (c1 = PTYCHAR1; *c1; c1++)
219 {
220 pty_name[ (sizeof (pty_name) - 3)] =
221 tty_name[ (sizeof (pty_name) - 3)] = *c1;
222
223 for (c2 = PTYCHAR2; *c2; c2++)
224 {
225 pty_name[ (sizeof (pty_name) - 2)] =
226 tty_name[ (sizeof (pty_name) - 2)] = *c2;
227
228 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
229 {
230 if (access (tty_name, R_OK | W_OK) == 0)
231 {
232 *ttydev = strdup (tty_name);
233 return pfd;
234 }
235
236 close (pfd);
237 }
238 }
239 }
240#endif
241
242 return -1;
243}
244
245static int
246get_pty (int *fd_tty, char **ttydev)
247{
248 int pfd;
249
250 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
251 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
252 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
253 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
254 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
255 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
256 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
257 return pfd;
258
259 return -1;
260}
261 210
262/*----------------------------------------------------------------------*/ 211/*----------------------------------------------------------------------*/
263/* 212/*
264 * Returns tty file descriptor, or -1 on failure 213 * Returns tty file descriptor, or -1 on failure
265 */ 214 */
266static int 215static int
267get_tty (char *ttydev) 216get_tty (char *ttydev)
268{ 217{
269 return open (ttydev, O_RDWR | O_NOCTTY, 0); 218 return open (ttydev, O_RDWR | O_NOCTTY, 0);
… …
274 * Make our tty a controlling tty so that /dev/tty points to us 223 * Make our tty a controlling tty so that /dev/tty points to us
275 */ 224 */
276static int 225static int
277control_tty (int fd_tty) 226control_tty (int fd_tty)
278{ 227{
228 int fd;
229
279 setsid (); 230 setsid ();
280 231
281#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 232#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
282 /* 233 /*
283 * Push STREAMS modules: 234 * Push STREAMS modules:
284 * ptem: pseudo-terminal hardware emulation module. 235 * ptem: pseudo-terminal hardware emulation module.
285 * ldterm: standard terminal line discipline. 236 * ldterm: standard terminal line discipline.
286 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 237 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
304 ioctl (fd_tty, I_PUSH, "ldterm"); 255 ioctl (fd_tty, I_PUSH, "ldterm");
305 ioctl (fd_tty, I_PUSH, "ttcompat"); 256 ioctl (fd_tty, I_PUSH, "ttcompat");
306 } 257 }
307#endif 258#endif
308 259
260#ifdef TIOCSCTTY
309 ioctl (fd_tty, TIOCSCTTY, NULL); 261 ioctl (fd_tty, TIOCSCTTY, NULL);
262#else
263 fd = open (ttyname (fd_tty), O_RDWR);
264 if (fd >= 0)
265 close (fd);
266#endif
310 267
311 int fd = open ("/dev/tty", O_WRONLY); 268 fd = open ("/dev/tty", O_WRONLY);
312 if (fd < 0) 269 if (fd < 0)
313 return -1; /* fatal */ 270 return -1; /* fatal */
314 271
315 close (fd); 272 close (fd);
316 273
317 return 0; 274 return 0;
318} 275}
319 276
320void 277void
321rxvt_ptytty::close_tty () 278ptytty::close_tty ()
322{ 279{
323 if (tty < 0) 280 if (tty < 0)
324 return; 281 return;
325 282
326 close (tty); 283 close (tty);
327 tty = -1; 284 tty = -1;
328} 285}
329 286
330bool 287bool
331rxvt_ptytty::make_controlling_tty () 288ptytty::make_controlling_tty ()
332{ 289{
333 return control_tty (tty) >= 0; 290 return control_tty (tty) >= 0;
334} 291}
335 292
336void 293void
337rxvt_ptytty::set_utf8_mode (bool on) 294ptytty::set_utf8_mode (bool on)
338{ 295{
339#ifdef IUTF8 296#ifdef IUTF8
340 if (pty < 0) 297 if (pty < 0)
341 return; 298 return;
342 299
… …
358 } 315 }
359 } 316 }
360#endif 317#endif
361} 318}
362 319
363/////////////////////////////////////////////////////////////////////////////
364
365#ifndef NO_SETOWNER_TTYDEV
366static struct ttyconf { 320static struct ttyconf {
367 gid_t gid; 321 gid_t gid;
368 mode_t mode; 322 mode_t mode;
369 323
370 ttyconf () 324 ttyconf ()
… …
376 { /* change group ownership of tty to "tty" */ 330 { /* change group ownership of tty to "tty" */
377 mode = S_IRUSR | S_IWUSR | S_IWGRP; 331 mode = S_IRUSR | S_IWUSR | S_IWGRP;
378 gid = gr->gr_gid; 332 gid = gr->gr_gid;
379 } 333 }
380 else 334 else
381#endif /* TTY_GID_SUPPORT */ 335#endif /* TTY_GID_SUPPORT */
382 { 336 {
383 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 337 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
384 gid = 0; 338 gid = 0;
385 } 339 }
386 } 340 }
387} ttyconf; 341} ttyconf;
388 342
389///////////////////////////////////////////////////////////////////////////// 343ptytty_unix::ptytty_unix ()
344{
345 name = 0;
346#if UTMP_SUPPORT
347 cmd_pid = 0;
348#endif
349}
350
351ptytty_unix::~ptytty_unix ()
352{
353#if UTMP_SUPPORT
354 logout ();
355#endif
356 put ();
357}
390 358
391void 359void
392rxvt_ptytty_unix::privileges (rxvt_privaction action) 360ptytty_unix::put ()
393{ 361{
394 if (!name || !*name) 362 if (name)
395 return;
396
397 if (action == SAVE)
398 { 363 {
364 chmod (name, RESTORE_TTY_MODE);
365 chown (name, 0, ttyconf.gid);
366 }
367
368 close_tty ();
369
370 if (pty >= 0)
371 close (pty);
372
373 free (name);
374
375 pty = tty = -1;
376 name = 0;
377}
378
379bool
380ptytty_unix::get ()
381{
382 /* get master (pty) */
383 if ((pty = get_pty (&tty, &name)) < 0)
384 return false;
385
386 fcntl (pty, F_SETFL, O_NONBLOCK);
387
388 /* get slave (tty) */
389 if (tty < 0)
390 {
391#ifndef NO_SETOWNER_TTYDEV
399 chown (name, getuid (), ttyconf.gid); /* fail silently */ 392 chown (name, getuid (), ttyconf.gid); /* fail silently */
400 chmod (name, ttyconf.mode); 393 chmod (name, ttyconf.mode);
401# ifdef HAVE_REVOKE 394# ifdef HAVE_REVOKE
402 revoke (name); 395 revoke (name);
403# endif 396# endif
404 }
405 else
406 { /* action == RESTORE */
407 chmod (name, RESTORE_TTY_MODE);
408 chown (name, 0, ttyconf.gid);
409 }
410}
411#endif
412
413rxvt_ptytty_unix::rxvt_ptytty_unix ()
414{
415 pty = tty = -1;
416 name = 0;
417#if UTMP_SUPPORT
418 cmd_pid = 0;
419#endif
420}
421
422rxvt_ptytty_unix::~rxvt_ptytty_unix ()
423{
424#if UTMP_SUPPORT
425 logout ();
426#endif
427 put ();
428}
429
430void
431rxvt_ptytty_unix::put ()
432{
433#ifndef NO_SETOWNER_TTYDEV
434 privileges (RESTORE);
435#endif
436
437 if (pty >= 0) close (pty);
438 close_tty ();
439 free (name);
440
441 pty = tty = -1;
442 name = 0;
443}
444
445bool
446rxvt_ptytty_unix::get ()
447{
448 /* get master (pty) */
449 if ((pty = get_pty (&tty, &name)) < 0)
450 return false;
451
452 fcntl (pty, F_SETFL, O_NONBLOCK);
453
454 /* get slave (tty) */
455 if (tty < 0)
456 {
457#ifndef NO_SETOWNER_TTYDEV
458 privileges (SAVE);
459#endif 397#endif
460 398
461 if ((tty = get_tty (name)) < 0) 399 if ((tty = get_tty (name)) < 0)
462 { 400 {
463 put (); 401 put ();
… …
466 } 404 }
467 405
468 return true; 406 return true;
469} 407}
470 408
471#if PTYTTY_HELPER
472
473static int sock_fd;
474static int pid;
475
476struct command
477{
478 enum { get, login, destroy } type;
479
480 rxvt_ptytty *id;
481
482 bool login_shell;
483 int cmd_pid;
484 char hostname[512]; // arbitrary, but should be plenty
485};
486
487struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
488{
489 rxvt_ptytty *id;
490
491 ~rxvt_ptytty_proxy ();
492
493 bool get ();
494 void login (int cmd_pid, bool login_shell, const char *hostname);
495};
496
497bool
498rxvt_ptytty_proxy::get ()
499{
500 command cmd;
501
502 cmd.type = command::get;
503
504 write (sock_fd, &cmd, sizeof (cmd));
505
506 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
507 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
508
509 if (!id)
510 return false;
511
512 if ((pty = rxvt_recv_fd (sock_fd)) < 0
513 || (tty = rxvt_recv_fd (sock_fd)) < 0)
514 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
515
516 return true;
517}
518
519void
520rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
521{
522 command cmd;
523
524 cmd.type = command::login;
525 cmd.id = id;
526 cmd.cmd_pid = cmd_pid;
527 cmd.login_shell = login_shell;
528 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
529
530 write (sock_fd, &cmd, sizeof (cmd));
531}
532
533rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
534{
535 command cmd;
536
537 cmd.type = command::destroy;
538 cmd.id = id;
539
540 write (sock_fd, &cmd, sizeof (cmd));
541}
542
543static
544void serve ()
545{
546 command cmd;
547 vector<rxvt_ptytty *> ptys;
548
549 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
550 {
551 if (cmd.type == command::get)
552 {
553 // -> id ptyfd ttyfd
554 cmd.id = new rxvt_ptytty_unix;
555
556 if (cmd.id->get ())
557 {
558 write (sock_fd, &cmd.id, sizeof (cmd.id));
559 ptys.push_back (cmd.id);
560
561 rxvt_send_fd (sock_fd, cmd.id->pty);
562 rxvt_send_fd (sock_fd, cmd.id->tty);
563 }
564 else
565 {
566 delete cmd.id;
567 cmd.id = 0;
568 write (sock_fd, &cmd.id, sizeof (cmd.id));
569 }
570 }
571 else if (cmd.type == command::login)
572 {
573#if UTMP_SUPPORT
574 if (find (ptys.begin (), ptys.end (), cmd.id))
575 {
576 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
577 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
578 }
579#endif
580 }
581 else if (cmd.type == command::destroy)
582 {
583 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
584
585 if (pty)
586 {
587 delete *pty;
588 ptys.erase (pty);
589 }
590 }
591 else
592 break;
593 }
594
595 // destroy all ptys
596 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
597 delete *i;
598}
599
600void rxvt_ptytty_server ()
601{
602 int sv[2];
603
604 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
605 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
606
607 pid = fork ();
608
609 if (pid < 0)
610 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
611
612 if (pid)
613 {
614 // client, urxvt
615 sock_fd = sv[0];
616 close (sv[1]);
617 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
618 }
619 else
620 {
621 // server, pty-helper
622 sock_fd = sv[1];
623
624 for (int fd = 0; fd < 1023; fd++)
625 if (fd != sock_fd)
626 close (fd);
627
628 serve ();
629 _exit (EXIT_SUCCESS);
630 }
631}
632#endif
633
634// a "factory" *g*
635rxvt_ptytty *
636rxvt_new_ptytty ()
637{
638#if PTYTTY_HELPER
639 if (pid > 0)
640 // use helper process
641 return new rxvt_ptytty_proxy;
642 else
643#endif
644 return new rxvt_ptytty_unix;
645}
646
647/*----------------------- end-of-file (C source) -----------------------*/
648

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