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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.11 by pcg, Thu Apr 8 20:31:45 2004 UTC vs.
Revision 1.43 by root, Tue Jan 17 16:50:42 2006 UTC

… …
2 * File: ptytty.C 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * 4 *
5 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
7 * Copyright (c) 2004 Marc Lehmann <pcg@goof.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#if 0
31#ifdef HAVE_GETPT
32# define _GNU_SOURCE
33#endif
34#endif
35
36#include <cstdio>
37#ifdef HAVE_STDLIB_H
38# include <cstdlib> 27#include <cstdlib>
39#endif 28#include <cstring>
40#ifdef HAVE_SYS_TYPES_H 29
41# include <sys/types.h> 30#include <sys/types.h>
42#endif 31#include <sys/socket.h>
43#ifdef HAVE_UNISTD_H
44# include <unistd.h> 32#include <unistd.h>
45#endif
46#if defined(HAVE_STRING_H)
47# include <cstring>
48#endif
49#ifdef HAVE_FCNTL_H
50# include <fcntl.h> 33#include <fcntl.h>
51#endif 34
52#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
53# include <sys/ioctl.h> 36# include <sys/ioctl.h>
54#endif 37#endif
55#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
56# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
57#endif 40#endif
58#ifdef HAVE_ISASTREAM 41#ifdef HAVE_ISASTREAM
59# include <stropts.h> 42# include <stropts.h>
60#endif 43#endif
61 44#if defined(HAVE_PTY_H)
62#ifdef DEBUG_TTY 45# include <pty.h>
63# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) 46#elif defined(HAVE_LIBUTIL_H)
64#else 47# include <libutil.h>
65# define D_TTY(x) 48#elif defined(HAVE_UTIL_H)
49# include <util.h>
66#endif 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/////////////////////////////////////////////////////////////////////////////
67 60
68/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
69 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
70 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
71/* 64/*
72 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
73 * 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.
74 * 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
75 */ 68 */
76/* EXTPROTO */ 69static int
77int
78rxvt_get_pty (int *fd_tty, const char **ttydev) 70get_pty (int *fd_tty, char **ttydev)
79{ 71{
80 int pfd; 72 int pfd;
81 73
82#ifdef PTYS_ARE_OPENPTY 74#ifdef PTYS_ARE_OPENPTY
83
84 char tty_name[sizeof "/dev/pts/????\0"]; 75 char tty_name[sizeof "/dev/pts/????\0"];
85 76
86 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 77 int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
78
79 if (res != -1)
87 { 80 {
88 *ttydev = strdup (tty_name); 81 *ttydev = strdup (tty_name);
89 return pfd; 82 return pfd;
90 } 83 }
91#endif 84#endif
… …
94 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 87 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
95 if (*ttydev != NULL) 88 if (*ttydev != NULL)
96 return pfd; 89 return pfd;
97#endif 90#endif
98 91
99#ifdef PTYS_ARE_GETPTY
100
101 char *ptydev;
102
103 while ((ptydev = getpty ()) != NULL)
104 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
105 {
106 *ttydev = ptydev;
107 return pfd;
108 }
109#endif
110
111#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 92#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
112# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 93# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
113 94
114 { 95 {
115# ifdef PTYS_ARE_GETPT 96# ifdef PTYS_ARE_GETPT
116 pfd = getpt (); 97 pfd = getpt();
117# else 98# else
118 99# ifdef PTYS_ARE_POSIX
100 pfd = posix_openpt (O_RDWR);
101# else
119 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 102 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
103# endif
120# endif 104# endif
121 105
122 if (pfd >= 0) 106 if (pfd >= 0)
123 { 107 {
124 if (grantpt (pfd) == 0 /* change slave permissions */ 108 if (grantpt (pfd) == 0 /* change slave permissions */
125 && unlockpt (pfd) == 0) 109 && unlockpt (pfd) == 0)
126 { /* slave now unlocked */ 110 { /* slave now unlocked */
127 *ttydev = ptsname (pfd); /* get slave's name */ 111 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
128 return pfd; 112 return pfd;
129 } 113 }
130 close (pfd); 114 close (pfd);
131 } 115 }
132 } 116 }
… …
134#endif 118#endif
135 119
136#ifdef PTYS_ARE_PTC 120#ifdef PTYS_ARE_PTC
137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 121 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
138 { 122 {
139 *ttydev = ttyname (pfd); 123 *ttydev = strdup (ttyname (pfd));
140 return pfd; 124 return pfd;
141 } 125 }
142#endif 126#endif
143 127
144#ifdef PTYS_ARE_CLONE 128#ifdef PTYS_ARE_CLONE
145 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 129 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
146 { 130 {
147 *ttydev = ptsname (pfd); 131 *ttydev = strdup (ptsname (pfd));
148 return pfd; 132 return pfd;
149 } 133 }
150#endif 134#endif
151 135
152#ifdef PTYS_ARE_NUMERIC 136#ifdef PTYS_ARE_NUMERIC
153 { 137 {
154 int idx; 138 int idx;
155 char *c1, *c2; 139 char *c1, *c2;
156 char pty_name[] = "/dev/ptyp???"; 140 char pty_name[] = "/dev/ptyp???";
157 char tty_name[] = "/dev/ttyp???"; 141 char tty_name[] = "/dev/ttyp???";
158 142
159 c1 = & (pty_name[sizeof (pty_name) - 4]); 143 c1 = &(pty_name[sizeof (pty_name) - 4]);
160 c2 = & (tty_name[sizeof (tty_name) - 4]); 144 c2 = &(tty_name[sizeof (tty_name) - 4]);
161 for (idx = 0; idx < 256; idx++) 145 for (idx = 0; idx < 256; idx++)
162 { 146 {
163 sprintf (c1, "%d", idx); 147 sprintf (c1, "%d", idx);
164 sprintf (c2, "%d", idx); 148 sprintf (c2, "%d", idx);
165 if (access (tty_name, F_OK) < 0) 149 if (access (tty_name, F_OK) < 0)
166 { 150 {
167 idx = 256; 151 idx = 256;
168 break; 152 break;
169 } 153 }
154
170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 155 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
171 { 156 {
172 if (access (tty_name, R_OK | W_OK) == 0) 157 if (access (tty_name, R_OK | W_OK) == 0)
173 { 158 {
174 *ttydev = strdup (tty_name); 159 *ttydev = strdup (tty_name);
175 return pfd; 160 return pfd;
176 } 161 }
162
177 close (pfd); 163 close (pfd);
178 } 164 }
179 } 165 }
180 } 166 }
181#endif 167#endif
168
182#ifdef PTYS_ARE_SEARCHED 169#ifdef PTYS_ARE_SEARCHED
183 { 170 {
184 const char *c1, *c2; 171 const char *c1, *c2;
185 char pty_name[] = "/dev/pty??"; 172 char pty_name[] = "/dev/pty??";
186 char tty_name[] = "/dev/tty??"; 173 char tty_name[] = "/dev/tty??";
187 174
188# ifndef PTYCHAR1 175# ifndef PTYCHAR1
189# define PTYCHAR1 "pqrstuvwxyz" 176# define PTYCHAR1 "pqrstuvwxyz"
190# endif 177# endif
191# ifndef PTYCHAR2 178# ifndef PTYCHAR2
… …
205 if (access (tty_name, R_OK | W_OK) == 0) 192 if (access (tty_name, R_OK | W_OK) == 0)
206 { 193 {
207 *ttydev = strdup (tty_name); 194 *ttydev = strdup (tty_name);
208 return pfd; 195 return pfd;
209 } 196 }
197
210 close (pfd); 198 close (pfd);
211 } 199 }
212 } 200 }
213 } 201 }
214 } 202 }
215#endif 203#endif
204
216 return -1; 205 return -1;
217} 206}
218 207
219/*----------------------------------------------------------------------*/ 208/*----------------------------------------------------------------------*/
220/* 209/*
221 * Returns tty file descriptor, or -1 on failure 210 * Returns tty file descriptor, or -1 on failure
222 */ 211 */
223/* EXTPROTO */ 212static int
224int
225rxvt_get_tty (const char *ttydev) 213get_tty (char *ttydev)
226{ 214{
227 return open (ttydev, O_RDWR | O_NOCTTY, 0); 215 return open (ttydev, O_RDWR | O_NOCTTY, 0);
228} 216}
229 217
230/*----------------------------------------------------------------------*/ 218/*----------------------------------------------------------------------*/
231/* 219/*
232 * Make our tty a controlling tty so that /dev/tty points to us 220 * Make our tty a controlling tty so that /dev/tty points to us
233 */ 221 */
234/* EXTPROTO */ 222static int
235int 223control_tty (int fd_tty)
236rxvt_control_tty (int fd_tty, const char *ttydev)
237{ 224{
238#ifndef __QNX__
239 int fd; 225 int fd;
240 226
241 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
242 /* ---------------------------------------- */ 227 /* ---------------------------------------- */
243# ifdef HAVE_SETSID
244 setsid (); 228 setsid ();
245# endif 229
246# if defined(HAVE_SETPGID)
247 setpgid (0, 0);
248# elif defined(HAVE_SETPGRP)
249 setpgrp (0, 0);
250# endif
251 /* ---------------------------------------- */ 230 /* ---------------------------------------- */
252# ifdef TIOCNOTTY
253
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
255 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
256 if (fd >= 0)
257 {
258 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
259 close (fd);
260 }
261# endif
262 /* ---------------------------------------- */
263 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
264 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
265 if (fd >= 0)
266 close (fd); /* ouch: still have controlling tty */
267 /* ---------------------------------------- */
268#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 231# if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
269 /* 232 /*
270 * Push STREAMS modules: 233 * Push STREAMS modules:
271 * ptem: pseudo-terminal hardware emulation module. 234 * ptem: pseudo-terminal hardware emulation module.
272 * ldterm: standard terminal line discipline. 235 * ldterm: standard terminal line discipline.
273 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 236 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
281 * documentation is really unclear about whether it is any close () on 244 * documentation is really unclear about whether it is any close () on
282 * the master side or the last close () - i.e. a proper STREAMS dismantling 245 * the master side or the last close () - i.e. a proper STREAMS dismantling
283 * close () - on the master side which causes a hang up to be sent 246 * close () - on the master side which causes a hang up to be sent
284 * through - Geoff Wing 247 * through - Geoff Wing
285 */ 248 */
286# ifdef HAVE_ISASTREAM 249# ifdef HAVE_ISASTREAM
287 if (isastream (fd_tty) == 1) 250 if (isastream (fd_tty) == 1)
288# endif 251# endif
289 { 252 {
290 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
291 ioctl (fd_tty, I_PUSH, "ptem"); 253 ioctl (fd_tty, I_PUSH, "ptem");
292 ioctl (fd_tty, I_PUSH, "ldterm"); 254 ioctl (fd_tty, I_PUSH, "ldterm");
293 ioctl (fd_tty, I_PUSH, "ttcompat"); 255 ioctl (fd_tty, I_PUSH, "ttcompat");
294 } 256 }
295#endif
296 /* ---------------------------------------- */
297# if defined(TIOCSCTTY)
298 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
299 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
300# elif defined(TIOCSETCTTY)
301 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
302 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
303# else
304 fd = open (ttydev, O_RDWR);
305 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
306 if (fd >= 0)
307 close (fd);
308# endif 257# endif
309 /* ---------------------------------------- */ 258 /* ---------------------------------------- */
259 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
260 /* ---------------------------------------- */
310 fd = open ("/dev/tty", O_WRONLY); 261 fd = open ("/dev/tty", O_WRONLY);
311 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
312 if (fd < 0) 262 if (fd < 0)
313 return -1; /* fatal */ 263 return -1; /* fatal */
314 close (fd); 264 close (fd);
315 /* ---------------------------------------- */ 265 /* ---------------------------------------- */
316 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
317 /* ---------------------------------------- */
318#endif /* ! __QNX__ */
319 266
320 return 0; 267 return 0;
321} 268}
269
270void
271rxvt_ptytty::close_tty ()
272{
273 if (tty < 0)
274 return;
275
276 close (tty);
277 tty = -1;
278}
279
280bool
281rxvt_ptytty::make_controlling_tty ()
282{
283 return control_tty (tty) >= 0;
284}
285
286void
287rxvt_ptytty::set_utf8_mode (bool on)
288{
289#ifdef IUTF8
290 if (pty < 0)
291 return;
292
293 struct termios tio;
294
295 if (tcgetattr (pty, &tio) != -1)
296 {
297 tcflag_t new_cflag = tio.c_iflag;
298
299 if (on)
300 new_cflag |= IUTF8;
301 else
302 new_cflag &= ~IUTF8;
303
304 if (new_cflag != tio.c_iflag)
305 {
306 tio.c_iflag = new_cflag;
307 tcsetattr (pty, TCSANOW, &tio);
308 }
309 }
310#endif
311}
312
313/////////////////////////////////////////////////////////////////////////////
314
315#ifndef NO_SETOWNER_TTYDEV
316static struct ttyconf {
317 gid_t gid;
318 mode_t mode;
319
320 ttyconf ()
321 {
322#ifdef TTY_GID_SUPPORT
323 struct group *gr = getgrnam ("tty");
324
325 if (gr)
326 { /* change group ownership of tty to "tty" */
327 mode = S_IRUSR | S_IWUSR | S_IWGRP;
328 gid = gr->gr_gid;
329 }
330 else
331#endif /* TTY_GID_SUPPORT */
332 {
333 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
334 gid = getgid ();
335 }
336 }
337} ttyconf;
338
339/////////////////////////////////////////////////////////////////////////////
340
341void
342rxvt_ptytty_unix::privileges (rxvt_privaction action)
343{
344 if (!name || !*name)
345 return;
346
347 if (action == SAVE)
348 {
349# ifndef RESET_TTY_TO_COMMON_DEFAULTS
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);
375# endif
376
377 }
378}
379#endif
380
381rxvt_ptytty_unix::rxvt_ptytty_unix ()
382{
383 pty = tty = -1;
384 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#if UTMP_SUPPORT
396 logout ();
397#endif
398 put ();
399}
400
401void
402rxvt_ptytty_unix::put ()
403{
404#ifndef NO_SETOWNER_TTYDEV
405 privileges (RESTORE);
406#endif
407
408 if (pty >= 0) close (pty);
409 close_tty ();
410 free (name);
411
412 pty = tty = -1;
413 name = 0;
414}
415
416bool
417rxvt_ptytty_unix::get ()
418{
419 /* get master (pty) */
420 if ((pty = get_pty (&tty, &name)) < 0)
421 return false;
422
423 fcntl (pty, F_SETFL, O_NONBLOCK);
424
425 /* get slave (tty) */
426 if (tty < 0)
427 {
428#ifndef NO_SETOWNER_TTYDEV
429 privileges (SAVE);
430#endif
431
432 if ((tty = get_tty (name)) < 0)
433 {
434 put ();
435 return false;
436 }
437 }
438
439 return true;
440}
441
442#if PTYTTY_HELPER
443
444static int sock_fd;
445static int pid;
446
447struct command
448{
449 enum { get, login, destroy } type;
450
451 rxvt_ptytty *id;
452
453 bool login_shell;
454 int cmd_pid;
455 char hostname[512]; // arbitrary, but should be plenty
456};
457
458struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
459{
460 rxvt_ptytty *id;
461
462 ~rxvt_ptytty_proxy ();
463
464 bool get ();
465 void login (int cmd_pid, bool login_shell, const char *hostname);
466};
467
468bool
469rxvt_ptytty_proxy::get ()
470{
471 command cmd;
472
473 cmd.type = command::get;
474
475 write (sock_fd, &cmd, sizeof (cmd));
476
477 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
478 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
479
480 if (!id)
481 return false;
482
483 if ((pty = rxvt_recv_fd (sock_fd)) < 0
484 || (tty = rxvt_recv_fd (sock_fd)) < 0)
485 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
486
487 return true;
488}
489
490void
491rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
492{
493 command cmd;
494
495 cmd.type = command::login;
496 cmd.id = id;
497 cmd.cmd_pid = cmd_pid;
498 cmd.login_shell = login_shell;
499 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
500
501 write (sock_fd, &cmd, sizeof (cmd));
502}
503
504rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
505{
506 command cmd;
507
508 cmd.type = command::destroy;
509 cmd.id = id;
510
511 write (sock_fd, &cmd, sizeof (cmd));
512}
513
514static
515void serve ()
516{
517 command cmd;
518 vector<rxvt_ptytty *> ptys;
519
520 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
521 {
522 if (cmd.type == command::get)
523 {
524 // -> id ptyfd ttyfd
525 cmd.id = new rxvt_ptytty_unix;
526
527 if (cmd.id->get ())
528 {
529 write (sock_fd, &cmd.id, sizeof (cmd.id));
530 ptys.push_back (cmd.id);
531
532 rxvt_send_fd (sock_fd, cmd.id->pty);
533 rxvt_send_fd (sock_fd, cmd.id->tty);
534 }
535 else
536 {
537 delete cmd.id;
538 cmd.id = 0;
539 write (sock_fd, &cmd.id, sizeof (cmd.id));
540 }
541 }
542 else if (cmd.type == command::login)
543 {
544#if UTMP_SUPPORT
545 if (find (ptys.begin (), ptys.end (), cmd.id))
546 {
547 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
548 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
549 }
550#endif
551 }
552 else if (cmd.type == command::destroy)
553 {
554 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
555
556 if (pty)
557 {
558 delete *pty;
559 ptys.erase (pty);
560 }
561 }
562 else
563 break;
564 }
565
566 // destroy all ptys
567 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
568 delete *i;
569}
570
571void rxvt_ptytty_server ()
572{
573 int sv[2];
574
575 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
576 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
577
578 pid = fork ();
579
580 if (pid < 0)
581 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
582
583 if (pid)
584 {
585 // client, urxvt
586 sock_fd = sv[0];
587 close (sv[1]);
588 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
589 }
590 else
591 {
592 setgid (getegid ());
593 setuid (geteuid ());
594
595 // server, pty-helper
596 sock_fd = sv[1];
597
598 for (int fd = 0; fd < 1023; fd++)
599 if (fd != sock_fd && fd != 1)
600 close (fd);
601
602 serve ();
603 _exit (EXIT_SUCCESS);
604 }
605}
606#endif
607
608// a "factory" *g*
609rxvt_ptytty *
610rxvt_new_ptytty ()
611{
612#if PTYTTY_HELPER
613 if (pid > 0)
614 // use helper process
615 return new rxvt_ptytty_proxy;
616 else
617#endif
618 return new rxvt_ptytty_unix;
619}
620
322/*----------------------- end-of-file (C source) -----------------------*/ 621/*----------------------- end-of-file (C source) -----------------------*/
622

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