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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.42 by root, Tue Jan 17 16:06:48 2006 UTC vs.
Revision 1.68 by ayin, Tue Dec 11 21:49:12 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 */
72#if defined(UNIX98_PTY)
73
69static int 74 static int
70get_pty (int *fd_tty, char **ttydev) 75 get_pty (int *fd_tty, char **ttydev)
71{ 76 {
72 int pfd; 77 int pfd;
73 78
74#ifdef PTYS_ARE_OPENPTY 79# if defined(HAVE_GETPT)
75 char tty_name[sizeof "/dev/pts/????\0"];
76
77 int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
78
79 if (res != -1)
80 {
81 *ttydev = strdup (tty_name);
82 return pfd;
83 }
84#endif
85
86#ifdef PTYS_ARE__GETPTY
87 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
88 if (*ttydev != NULL)
89 return pfd;
90#endif
91
92#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
93# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
94
95 {
96# ifdef PTYS_ARE_GETPT
97 pfd = getpt(); 80 pfd = getpt();
98# else 81# elif defined(HAVE_POSIX_OPENPT)
99# ifdef PTYS_ARE_POSIX
100 pfd = posix_openpt (O_RDWR); 82 pfd = posix_openpt (O_RDWR);
101# else 83# else
102 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 84 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
103# endif 85# endif
104# endif
105 86
106 if (pfd >= 0) 87 if (pfd >= 0)
107 { 88 {
108 if (grantpt (pfd) == 0 /* change slave permissions */ 89 if (grantpt (pfd) == 0 /* change slave permissions */
109 && unlockpt (pfd) == 0) 90 && unlockpt (pfd) == 0)
91 {
110 { /* slave now unlocked */ 92 /* slave now unlocked */
111 *ttydev = strdup (ptsname (pfd)); /* get slave's name */ 93 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
112 return pfd; 94 return pfd;
113 } 95 }
96
114 close (pfd); 97 close (pfd);
115 } 98 }
116 }
117# endif
118#endif
119 99
120#ifdef PTYS_ARE_PTC 100 return -1;
121 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 101 }
102
103#elif defined(HAVE_OPENPTY)
104
105 static int
106 get_pty (int *fd_tty, char **ttydev)
107 {
108 int pfd;
109 int res;
110
111 res = openpty (&pfd, fd_tty, NULL, NULL, NULL);
112
113 if (res != -1)
122 { 114 {
123 *ttydev = strdup (ttyname (pfd)); 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) {
133 *ttydev = strdup (slave);
124 return pfd; 134 return pfd;
125 } 135 }
126#endif
127 136
128#ifdef PTYS_ARE_CLONE 137 return -1;
138 }
139
140#elif defined(HAVE_DEV_PTC)
141
142 static int
143 get_pty (int *fd_tty, char **ttydev)
144 {
145 int pfd;
146
129 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 147 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
130 {
131 *ttydev = strdup (ptsname (pfd));
132 return pfd;
133 }
134#endif
135
136#ifdef PTYS_ARE_NUMERIC
137 {
138 int idx;
139 char *c1, *c2;
140 char pty_name[] = "/dev/ptyp???";
141 char tty_name[] = "/dev/ttyp???";
142
143 c1 = &(pty_name[sizeof (pty_name) - 4]);
144 c2 = &(tty_name[sizeof (tty_name) - 4]);
145 for (idx = 0; idx < 256; idx++)
146 { 148 {
147 sprintf (c1, "%d", idx); 149 *ttydev = strdup (ttyname (pfd));
148 sprintf (c2, "%d", idx); 150 return pfd;
149 if (access (tty_name, F_OK) < 0) 151 }
152
153 return -1;
154 }
155
156#elif defined(HAVE_DEV_CLONE)
157
158 static int
159 get_pty (int *fd_tty, char **ttydev)
160 {
161 int pfd;
162
163 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
164 {
165 *ttydev = strdup (ptsname (pfd));
166 return pfd;
167 }
168
169 return -1;
170 }
171
172#else
173
174 /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
175 static int
176 get_pty (int *fd_tty, char **ttydev)
177 {
178 int pfd;
179 int i;
180 char pty_name[32];
181 char tty_name[32];
182 const char *majors = "pqrstuvwxyzabcde";
183 const char *minors = "0123456789abcdef";
184
185 for (i = 0; i < 256; i++)
186 {
187 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
188 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
189
190 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
150 { 191 {
151 idx = 256; 192 snprintf(pty_name, 32, "/dev/ptyp%d", i);
152 break; 193 snprintf(tty_name, 32, "/dev/ttyp%d", i);
194 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
195 continue;
153 } 196 }
154 197
155 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 198 if (access (tty_name, R_OK | W_OK) == 0)
156 { 199 {
157 if (access (tty_name, R_OK | W_OK) == 0)
158 {
159 *ttydev = strdup (tty_name); 200 *ttydev = strdup (tty_name);
160 return pfd; 201 return pfd;
161 }
162
163 close (pfd);
164 } 202 }
203
204 close (pfd);
165 } 205 }
166 }
167#endif
168 206
169#ifdef PTYS_ARE_SEARCHED
170 {
171 const char *c1, *c2;
172 char pty_name[] = "/dev/pty??";
173 char tty_name[] = "/dev/tty??";
174
175# ifndef PTYCHAR1
176# define PTYCHAR1 "pqrstuvwxyz"
177# endif
178# ifndef PTYCHAR2
179# define PTYCHAR2 "0123456789abcdef"
180# endif
181
182 for (c1 = PTYCHAR1; *c1; c1++)
183 {
184 pty_name[ (sizeof (pty_name) - 3)] =
185 tty_name[ (sizeof (pty_name) - 3)] = *c1;
186 for (c2 = PTYCHAR2; *c2; c2++)
187 {
188 pty_name[ (sizeof (pty_name) - 2)] =
189 tty_name[ (sizeof (pty_name) - 2)] = *c2;
190 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
191 {
192 if (access (tty_name, R_OK | W_OK) == 0)
193 {
194 *ttydev = strdup (tty_name);
195 return pfd;
196 }
197
198 close (pfd);
199 }
200 }
201 }
202 }
203#endif
204
205 return -1; 207 return -1;
206} 208 }
209
210#endif
207 211
208/*----------------------------------------------------------------------*/ 212/*----------------------------------------------------------------------*/
209/* 213/*
210 * Returns tty file descriptor, or -1 on failure 214 * Returns tty file descriptor, or -1 on failure
211 */ 215 */
212static int 216static int
213get_tty (char *ttydev) 217get_tty (char *ttydev)
214{ 218{
215 return open (ttydev, O_RDWR | O_NOCTTY, 0); 219 return open (ttydev, O_RDWR | O_NOCTTY, 0);
222static int 226static int
223control_tty (int fd_tty) 227control_tty (int fd_tty)
224{ 228{
225 int fd; 229 int fd;
226 230
227 /* ---------------------------------------- */
228 setsid (); 231 setsid ();
229 232
230 /* ---------------------------------------- */
231# if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 233#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
232 /* 234 /*
233 * Push STREAMS modules: 235 * Push STREAMS modules:
234 * ptem: pseudo-terminal hardware emulation module. 236 * ptem: pseudo-terminal hardware emulation module.
235 * ldterm: standard terminal line discipline. 237 * ldterm: standard terminal line discipline.
236 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 238 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
244 * documentation is really unclear about whether it is any close () on 246 * documentation is really unclear about whether it is any close () on
245 * 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
246 * 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
247 * through - Geoff Wing 249 * through - Geoff Wing
248 */ 250 */
249# ifdef HAVE_ISASTREAM 251# ifdef HAVE_ISASTREAM
250 if (isastream (fd_tty) == 1) 252 if (isastream (fd_tty) == 1)
251# endif 253# endif
252 { 254 {
253 ioctl (fd_tty, I_PUSH, "ptem"); 255 ioctl (fd_tty, I_PUSH, "ptem");
254 ioctl (fd_tty, I_PUSH, "ldterm"); 256 ioctl (fd_tty, I_PUSH, "ldterm");
255 ioctl (fd_tty, I_PUSH, "ttcompat"); 257 ioctl (fd_tty, I_PUSH, "ttcompat");
256 } 258 }
257# endif 259#endif
258 /* ---------------------------------------- */ 260
261#ifdef TIOCSCTTY
259 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 262 ioctl (fd_tty, TIOCSCTTY, NULL);
260 /* ---------------------------------------- */ 263#else
264 fd = open (ttyname (fd_tty), O_RDWR);
265 if (fd >= 0)
266 close (fd);
267#endif
268
261 fd = open ("/dev/tty", O_WRONLY); 269 fd = open ("/dev/tty", O_WRONLY);
262 if (fd < 0) 270 if (fd < 0)
263 return -1; /* fatal */ 271 return -1; /* fatal */
272
264 close (fd); 273 close (fd);
265 /* ---------------------------------------- */
266 274
267 return 0; 275 return 0;
268} 276}
269 277
270void 278void
271rxvt_ptytty::close_tty () 279ptytty::close_tty ()
272{ 280{
273 if (tty < 0) 281 if (tty < 0)
274 return; 282 return;
275 283
276 close (tty); 284 close (tty);
277 tty = -1; 285 tty = -1;
278} 286}
279 287
280bool 288bool
281rxvt_ptytty::make_controlling_tty () 289ptytty::make_controlling_tty ()
282{ 290{
283 return control_tty (tty) >= 0; 291 return control_tty (tty) >= 0;
284} 292}
285 293
286void 294void
287rxvt_ptytty::set_utf8_mode (bool on) 295ptytty::set_utf8_mode (bool on)
288{ 296{
289#ifdef IUTF8 297#ifdef IUTF8
290 if (pty < 0) 298 if (pty < 0)
291 return; 299 return;
292 300
308 } 316 }
309 } 317 }
310#endif 318#endif
311} 319}
312 320
313/////////////////////////////////////////////////////////////////////////////
314
315#ifndef NO_SETOWNER_TTYDEV
316static struct ttyconf { 321static struct ttyconf {
317 gid_t gid; 322 gid_t gid;
318 mode_t mode; 323 mode_t mode;
319 324
320 ttyconf () 325 ttyconf ()
321 { 326 {
322#ifdef TTY_GID_SUPPORT 327#ifdef TTY_GID_SUPPORT
323 struct group *gr = getgrnam ("tty"); 328 struct group *gr = getgrnam ("tty");
324 329
325 if (gr) 330 if (gr)
331 {
326 { /* change group ownership of tty to "tty" */ 332 /* change group ownership of tty to "tty" */
327 mode = S_IRUSR | S_IWUSR | S_IWGRP; 333 mode = S_IRUSR | S_IWUSR | S_IWGRP;
328 gid = gr->gr_gid; 334 gid = gr->gr_gid;
329 } 335 }
330 else 336 else
331#endif /* TTY_GID_SUPPORT */ 337#endif /* TTY_GID_SUPPORT */
332 { 338 {
333 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 339 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
334 gid = getgid (); 340 gid = 0;
335 } 341 }
336 } 342 }
337} ttyconf; 343} ttyconf;
338 344
339///////////////////////////////////////////////////////////////////////////// 345ptytty_unix::ptytty_unix ()
346{
347 name = 0;
348#if UTMP_SUPPORT
349 cmd_pid = 0;
350#endif
351}
352
353ptytty_unix::~ptytty_unix ()
354{
355#if UTMP_SUPPORT
356 logout ();
357#endif
358 put ();
359}
340 360
341void 361void
342rxvt_ptytty_unix::privileges (rxvt_privaction action) 362ptytty_unix::put ()
343{ 363{
344 if (!name || !*name) 364 if (name)
345 return;
346
347 if (action == SAVE)
348 { 365 {
349# ifndef RESET_TTY_TO_COMMON_DEFAULTS 366 chmod (name, RESTORE_TTY_MODE);
350 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
351 if (lstat (name, &savestat) < 0) /* you lose out */
352 ;
353 else
354# endif
355 {
356 saved = true;
357 chown (name, getuid (), ttyconf.gid); /* fail silently */
358 chmod (name, ttyconf.mode);
359# ifdef HAVE_REVOKE
360 revoke (name);
361# endif
362 }
363 }
364 else
365 { /* action == RESTORE */
366# ifndef RESET_TTY_TO_COMMON_DEFAULTS
367 if (saved)
368 {
369 chmod (name, savestat.st_mode);
370 chown (name, savestat.st_uid, savestat.st_gid);
371 }
372# else
373 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
374 chown (name, 0, 0); 367 chown (name, 0, ttyconf.gid);
375# endif
376
377 } 368 }
378}
379#endif
380 369
381rxvt_ptytty_unix::rxvt_ptytty_unix () 370 close_tty ();
382{ 371
372 if (pty >= 0)
373 close (pty);
374
375 free (name);
376
383 pty = tty = -1; 377 pty = tty = -1;
384 name = 0; 378 name = 0;
385#ifndef NO_SETOWNER_TTYDEV
386 saved = false;
387#endif
388#if UTMP_SUPPORT
389 cmd_pid = 0;
390#endif
391}
392
393rxvt_ptytty_unix::~rxvt_ptytty_unix ()
394{
395 logout ();
396 put ();
397}
398
399void
400rxvt_ptytty_unix::put ()
401{
402#ifndef NO_SETOWNER_TTYDEV
403 privileges (RESTORE);
404#endif
405
406 if (pty >= 0) close (pty);
407 close_tty ();
408 free (name);
409
410 pty = tty = -1;
411 name = 0;
412} 379}
413 380
414bool 381bool
415rxvt_ptytty_unix::get () 382ptytty_unix::get ()
416{ 383{
417 /* get master (pty) */ 384 /* get master (pty) */
418 if ((pty = get_pty (&tty, &name)) < 0) 385 if ((pty = get_pty (&tty, &name)) < 0)
419 return false; 386 return false;
420 387
422 389
423 /* get slave (tty) */ 390 /* get slave (tty) */
424 if (tty < 0) 391 if (tty < 0)
425 { 392 {
426#ifndef NO_SETOWNER_TTYDEV 393#ifndef NO_SETOWNER_TTYDEV
427 privileges (SAVE); 394 chown (name, getuid (), ttyconf.gid); /* fail silently */
395 chmod (name, ttyconf.mode);
396# ifdef HAVE_REVOKE
397 revoke (name);
398# endif
428#endif 399#endif
429 400
430 if ((tty = get_tty (name)) < 0) 401 if ((tty = get_tty (name)) < 0)
431 { 402 {
432 put (); 403 put ();
435 } 406 }
436 407
437 return true; 408 return true;
438} 409}
439 410
440#if PTYTTY_HELPER
441
442static int sock_fd;
443static int pid;
444
445struct command
446{
447 enum { get, login, destroy } type;
448
449 rxvt_ptytty *id;
450
451 bool login_shell;
452 int cmd_pid;
453 char hostname[512]; // arbitrary, but should be plenty
454};
455
456struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
457{
458 rxvt_ptytty *id;
459
460 ~rxvt_ptytty_proxy ();
461
462 bool get ();
463 void login (int cmd_pid, bool login_shell, const char *hostname);
464};
465
466bool
467rxvt_ptytty_proxy::get ()
468{
469 command cmd;
470
471 cmd.type = command::get;
472
473 write (sock_fd, &cmd, sizeof (cmd));
474
475 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
476 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
477
478 if (!id)
479 return false;
480
481 if ((pty = rxvt_recv_fd (sock_fd)) < 0
482 || (tty = rxvt_recv_fd (sock_fd)) < 0)
483 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
484
485 return true;
486}
487
488void
489rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
490{
491 command cmd;
492
493 cmd.type = command::login;
494 cmd.id = id;
495 cmd.cmd_pid = cmd_pid;
496 cmd.login_shell = login_shell;
497 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
498
499 write (sock_fd, &cmd, sizeof (cmd));
500}
501
502rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
503{
504 command cmd;
505
506 cmd.type = command::destroy;
507 cmd.id = id;
508
509 write (sock_fd, &cmd, sizeof (cmd));
510}
511
512static
513void serve ()
514{
515 command cmd;
516 vector<rxvt_ptytty *> ptys;
517
518 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
519 {
520 if (cmd.type == command::get)
521 {
522 // -> id ptyfd ttyfd
523 cmd.id = new rxvt_ptytty_unix;
524
525 if (cmd.id->get ())
526 {
527 write (sock_fd, &cmd.id, sizeof (cmd.id));
528 ptys.push_back (cmd.id);
529
530 rxvt_send_fd (sock_fd, cmd.id->pty);
531 rxvt_send_fd (sock_fd, cmd.id->tty);
532 }
533 else
534 {
535 delete cmd.id;
536 cmd.id = 0;
537 write (sock_fd, &cmd.id, sizeof (cmd.id));
538 }
539 }
540 else if (cmd.type == command::login)
541 {
542 if (find (ptys.begin (), ptys.end (), cmd.id))
543 {
544 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
545 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
546 }
547 }
548 else if (cmd.type == command::destroy)
549 {
550 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
551
552 if (pty)
553 {
554 delete *pty;
555 ptys.erase (pty);
556 }
557 }
558 else
559 break;
560 }
561
562 // destroy all ptys
563 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
564 delete *i;
565}
566
567void rxvt_ptytty_server ()
568{
569 int sv[2];
570
571 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
572 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
573
574 pid = fork ();
575
576 if (pid < 0)
577 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
578
579 if (pid)
580 {
581 // client, urxvt
582 sock_fd = sv[0];
583 close (sv[1]);
584 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
585 }
586 else
587 {
588 setgid (getegid ());
589 setuid (geteuid ());
590
591 // server, pty-helper
592 sock_fd = sv[1];
593
594 for (int fd = 0; fd < 1023; fd++)
595 if (fd != sock_fd && fd != 1)
596 close (fd);
597
598 serve ();
599 _exit (EXIT_SUCCESS);
600 }
601}
602#endif
603
604// a "factory" *g*
605rxvt_ptytty *
606rxvt_new_ptytty ()
607{
608#if PTYTTY_HELPER
609 if (pid > 0)
610 // use helper process
611 return new rxvt_ptytty_proxy;
612 else
613#endif
614 return new rxvt_ptytty_unix;
615}
616
617/*----------------------- end-of-file (C source) -----------------------*/
618

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