ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/ptytty.C
(Generate patch)

Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.17 by root, Thu Sep 30 09:49:13 2004 UTC vs.
Revision 1.44 by ayin, Tue Jan 17 17:59:31 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.
… …
22 *---------------------------------------------------------------------*/ 22 *---------------------------------------------------------------------*/
23 23
24#include "../config.h" /* NECESSARY */ 24#include "../config.h" /* NECESSARY */
25#include "rxvt.h" 25#include "rxvt.h"
26 26
27#ifdef HAVE_STDLIB_H
28# include <cstdlib> 27#include <cstdlib>
29#endif 28#include <cstring>
30#ifdef HAVE_SYS_TYPES_H 29
31# include <sys/types.h> 30#include <sys/types.h>
32#endif 31#include <sys/socket.h>
33#ifdef HAVE_UNISTD_H
34# include <unistd.h> 32#include <unistd.h>
35#endif
36#if defined(HAVE_STRING_H)
37# include <cstring>
38#endif
39#ifdef HAVE_FCNTL_H
40# include <fcntl.h> 33#include <fcntl.h>
41#endif 34
42#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
43# include <sys/ioctl.h> 36# include <sys/ioctl.h>
44#endif 37#endif
45#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
46# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
47#endif 40#endif
48#ifdef HAVE_ISASTREAM 41#ifdef HAVE_ISASTREAM
49# include <stropts.h> 42# include <stropts.h>
50#endif 43#endif
51 44#if defined(HAVE_PTY_H)
52// better do this via configure, but.... 45# include <pty.h>
53#if defined(__FreeBSD__) 46#elif defined(HAVE_LIBUTIL_H)
54# include <libutil.h> 47# include <libutil.h>
55#elif defined(__DARWIN__) 48#elif defined(HAVE_UTIL_H)
56# include <util.h> 49# include <util.h>
57#endif 50#endif
58 51
59#include <cstdio> 52#include <cstdio>
60#include <grp.h> 53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58
59/////////////////////////////////////////////////////////////////////////////
61 60
62/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
63 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
64 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
65/* 64/*
66 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
67 * 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.
68 * 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
69 */ 68 */
70static int 69static inline int
71get_pty (int *fd_tty, char **ttydev) 70get_pty_streams (int *fd_tty, char **ttydev)
72{ 71{
72#ifdef NO_SETOWNER_TTYDEV
73 int pfd; 73 int pfd;
74 74
75# ifdef PTYS_ARE_GETPT
76 pfd = getpt();
77# else
78# ifdef PTYS_ARE_POSIX
79 pfd = posix_openpt (O_RDWR);
80# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
82# endif
83# endif
84 if (pfd >= 0)
85 {
86 if (grantpt (pfd) == 0 /* change slave permissions */
87 && unlockpt (pfd) == 0)
88 { /* slave now unlocked */
89 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
90 return pfd;
91 }
92 close (pfd);
93 }
94#endif
95 return -1;
96}
97
98static inline int
99get_pty_openpty (int *fd_tty, char **ttydev)
100{
75#ifdef PTYS_ARE_OPENPTY 101#ifdef PTYS_ARE_OPENPTY
102 int pfd;
103 int res;
76 char tty_name[sizeof "/dev/pts/????\0"]; 104 char tty_name[sizeof "/dev/pts/????\0"];
77 105
78 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
107 if (res != -1)
79 { 108 {
80 *ttydev = strdup (tty_name); 109 *ttydev = strdup (tty_name);
81 return pfd; 110 return pfd;
82 } 111 }
83#endif 112#endif
113 return -1;
114}
84 115
116static inline int
117get_pty__getpty (int *fd_tty, char **ttydev)
118{
85#ifdef PTYS_ARE__GETPTY 119#ifdef PTYS_ARE__GETPTY
120 int pfd;
121
86 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 122 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
87 if (*ttydev != NULL) 123 if (*ttydev != NULL)
88 return pfd; 124 return pfd;
89#endif 125#endif
126 return -1;
127}
90 128
91#ifdef PTYS_ARE_GETPTY 129static inline int
92 130get_pty_ptc (int *fd_tty, char **ttydev)
93 char *ptydev; 131{
94
95 while ((ptydev = getpty ()) != NULL)
96 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
97 {
98 *ttydev = ptydev;
99 return pfd;
100 }
101#endif
102
103#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
104# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
105
106 {
107# ifdef PTYS_ARE_GETPT
108 pfd = getpt ();
109# else
110 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif
112
113 if (pfd >= 0)
114 {
115 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */
118 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
119 return pfd;
120 }
121 close (pfd);
122 }
123 }
124# endif
125#endif
126
127#ifdef PTYS_ARE_PTC 132#ifdef PTYS_ARE_PTC
133 int pfd;
134
128 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 135 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 136 {
130 *ttydev = strdup (ttyname (pfd)); 137 *ttydev = strdup (ttyname (pfd));
131 return pfd; 138 return pfd;
132 } 139 }
133#endif 140#endif
141 return -1;
142}
134 143
144static inline int
145get_pty_clone (int *fd_tty, char **ttydev)
146{
135#ifdef PTYS_ARE_CLONE 147#ifdef PTYS_ARE_CLONE
148 int pfd;
149
136 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 150 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 151 {
138 *ttydev = strdup (ptsname (pfd)); 152 *ttydev = strdup (ptsname (pfd));
139 return pfd; 153 return pfd;
140 } 154 }
141#endif 155#endif
156 return -1;
157}
142 158
159static inline int
160get_pty_numeric (int *fd_tty, char **ttydev)
161{
143#ifdef PTYS_ARE_NUMERIC 162#ifdef PTYS_ARE_NUMERIC
144 { 163 int pfd;
145 int idx; 164 int idx;
146 char *c1, *c2; 165 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 166 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 167 char tty_name[] = "/dev/ttyp???";
149 168
… …
168 } 187 }
169 188
170 close (pfd); 189 close (pfd);
171 } 190 }
172 } 191 }
173 }
174#endif 192#endif
193 return -1;
194}
175 195
196static inline int
197get_pty_searched (int *fd_tty, char **ttydev)
198{
176#ifdef PTYS_ARE_SEARCHED 199#ifdef PTYS_ARE_SEARCHED
177 { 200# ifndef PTYCHAR1
201# define PTYCHAR1 "pqrstuvwxyz"
202# endif
203# ifndef PTYCHAR2
204# define PTYCHAR2 "0123456789abcdef"
205# endif
206 int pfd;
178 const char *c1, *c2; 207 const char *c1, *c2;
179 char pty_name[] = "/dev/pty??"; 208 char pty_name[] = "/dev/pty??";
180 char tty_name[] = "/dev/tty??"; 209 char tty_name[] = "/dev/tty??";
181
182# ifndef PTYCHAR1
183# define PTYCHAR1 "pqrstuvwxyz"
184# endif
185# ifndef PTYCHAR2
186# define PTYCHAR2 "0123456789abcdef"
187# endif
188 210
189 for (c1 = PTYCHAR1; *c1; c1++) 211 for (c1 = PTYCHAR1; *c1; c1++)
190 { 212 {
191 pty_name[ (sizeof (pty_name) - 3)] = 213 pty_name[ (sizeof (pty_name) - 3)] =
192 tty_name[ (sizeof (pty_name) - 3)] = *c1; 214 tty_name[ (sizeof (pty_name) - 3)] = *c1;
… …
204 226
205 close (pfd); 227 close (pfd);
206 } 228 }
207 } 229 }
208 } 230 }
209 }
210#endif 231#endif
232 return -1;
233}
211 234
235static int
236get_pty (int *fd_tty, char **ttydev)
237{
238 int pfd;
239
240 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
241 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
242 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
243 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
244 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
245 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
246 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
247 return pfd;
212 return -1; 248 return -1;
213} 249}
214 250
215/*----------------------------------------------------------------------*/ 251/*----------------------------------------------------------------------*/
216/* 252/*
… …
225/*----------------------------------------------------------------------*/ 261/*----------------------------------------------------------------------*/
226/* 262/*
227 * Make our tty a controlling tty so that /dev/tty points to us 263 * Make our tty a controlling tty so that /dev/tty points to us
228 */ 264 */
229static int 265static int
230control_tty (int fd_tty, const char *ttydev) 266control_tty (int fd_tty)
231{ 267{
232#ifndef __QNX__
233 int fd; 268 int fd;
234 269
235 /* ---------------------------------------- */ 270 /* ---------------------------------------- */
236# ifdef HAVE_SETSID
237 setsid (); 271 setsid ();
238# endif
239# if defined(HAVE_SETPGID)
240 setpgid (0, 0);
241# elif defined(HAVE_SETPGRP)
242 setpgrp (0, 0);
243# endif
244 272
245 /* ---------------------------------------- */ 273 /* ---------------------------------------- */
246# ifdef TIOCNOTTY
247 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
248 if (fd >= 0)
249 {
250 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
251 close (fd);
252 }
253# endif
254
255 /* ---------------------------------------- */
256 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
257 if (fd >= 0)
258 close (fd); /* ouch: still have controlling tty */
259
260 /* ---------------------------------------- */
261#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 274# if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
262 /* 275 /*
263 * Push STREAMS modules: 276 * Push STREAMS modules:
264 * ptem: pseudo-terminal hardware emulation module. 277 * ptem: pseudo-terminal hardware emulation module.
265 * ldterm: standard terminal line discipline. 278 * ldterm: standard terminal line discipline.
266 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 279 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
274 * documentation is really unclear about whether it is any close () on 287 * documentation is really unclear about whether it is any close () on
275 * the master side or the last close () - i.e. a proper STREAMS dismantling 288 * the master side or the last close () - i.e. a proper STREAMS dismantling
276 * close () - on the master side which causes a hang up to be sent 289 * close () - on the master side which causes a hang up to be sent
277 * through - Geoff Wing 290 * through - Geoff Wing
278 */ 291 */
279# ifdef HAVE_ISASTREAM 292# ifdef HAVE_ISASTREAM
280 if (isastream (fd_tty) == 1) 293 if (isastream (fd_tty) == 1)
281# endif 294# endif
282 { 295 {
283 ioctl (fd_tty, I_PUSH, "ptem"); 296 ioctl (fd_tty, I_PUSH, "ptem");
284 ioctl (fd_tty, I_PUSH, "ldterm"); 297 ioctl (fd_tty, I_PUSH, "ldterm");
285 ioctl (fd_tty, I_PUSH, "ttcompat"); 298 ioctl (fd_tty, I_PUSH, "ttcompat");
286 } 299 }
287#endif 300# endif
288 /* ---------------------------------------- */ 301 /* ---------------------------------------- */
289# if defined(TIOCSCTTY)
290 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 302 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
291# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293# else
294 fd = open (ttydev, O_RDWR);
295 if (fd >= 0)
296 close (fd);
297# endif
298 /* ---------------------------------------- */ 303 /* ---------------------------------------- */
299 fd = open ("/dev/tty", O_WRONLY); 304 fd = open ("/dev/tty", O_WRONLY);
300 if (fd < 0) 305 if (fd < 0)
301 return -1; /* fatal */ 306 return -1; /* fatal */
302 close (fd); 307 close (fd);
303 /* ---------------------------------------- */ 308 /* ---------------------------------------- */
304#endif /* ! __QNX__ */
305 309
306 return 0; 310 return 0;
307} 311}
312
313void
314rxvt_ptytty::close_tty ()
315{
316 if (tty < 0)
317 return;
318
319 close (tty);
320 tty = -1;
321}
322
323bool
324rxvt_ptytty::make_controlling_tty ()
325{
326 return control_tty (tty) >= 0;
327}
328
329void
330rxvt_ptytty::set_utf8_mode (bool on)
331{
332#ifdef IUTF8
333 if (pty < 0)
334 return;
335
336 struct termios tio;
337
338 if (tcgetattr (pty, &tio) != -1)
339 {
340 tcflag_t new_cflag = tio.c_iflag;
341
342 if (on)
343 new_cflag |= IUTF8;
344 else
345 new_cflag &= ~IUTF8;
346
347 if (new_cflag != tio.c_iflag)
348 {
349 tio.c_iflag = new_cflag;
350 tcsetattr (pty, TCSANOW, &tio);
351 }
352 }
353#endif
354}
355
356/////////////////////////////////////////////////////////////////////////////
308 357
309#ifndef NO_SETOWNER_TTYDEV 358#ifndef NO_SETOWNER_TTYDEV
310static struct ttyconf { 359static struct ttyconf {
311 gid_t gid; 360 gid_t gid;
312 mode_t mode; 361 mode_t mode;
… …
328 gid = getgid (); 377 gid = getgid ();
329 } 378 }
330 } 379 }
331} ttyconf; 380} ttyconf;
332 381
382/////////////////////////////////////////////////////////////////////////////
383
333void 384void
334rxvt_ptytty::privileges (rxvt_privaction action) 385rxvt_ptytty_unix::privileges (rxvt_privaction action)
335{ 386{
336 rxvt_privileges (RESTORE); 387 if (!name || !*name)
388 return;
337 389
338 if (action == SAVE) 390 if (action == SAVE)
339 { 391 {
340 //next_tty_action = RESTORE;
341# ifndef RESET_TTY_TO_COMMON_DEFAULTS 392# ifndef RESET_TTY_TO_COMMON_DEFAULTS
342 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ 393 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
343 if (lstat (name, &savestat) < 0) /* you lose out */ 394 if (lstat (name, &savestat) < 0) /* you lose out */
344 ;//next_tty_action = IGNORE; 395 ;
345 else 396 else
346# endif 397# endif
347
348 { 398 {
399 saved = true;
349 chown (name, getuid (), ttyconf.gid); /* fail silently */ 400 chown (name, getuid (), ttyconf.gid); /* fail silently */
350 chmod (name, ttyconf.mode); 401 chmod (name, ttyconf.mode);
351# ifdef HAVE_REVOKE 402# ifdef HAVE_REVOKE
352 revoke (name); 403 revoke (name);
353# endif 404# endif
354
355 } 405 }
356 } 406 }
357 else 407 else
358 { /* action == RESTORE */ 408 { /* action == RESTORE */
359 //next_tty_action = IGNORE;
360# ifndef RESET_TTY_TO_COMMON_DEFAULTS 409# ifndef RESET_TTY_TO_COMMON_DEFAULTS
410 if (saved)
411 {
361 chmod (name, savestat.st_mode); 412 chmod (name, savestat.st_mode);
362 chown (name, savestat.st_uid, savestat.st_gid); 413 chown (name, savestat.st_uid, savestat.st_gid);
414 }
363# else 415# else
364 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); 416 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
365 chown (name, 0, 0); 417 chown (name, 0, 0);
366# endif 418# endif
367 419
368 } 420 }
369
370 rxvt_privileges (IGNORE);
371} 421}
372#endif 422#endif
373 423
374rxvt_ptytty::rxvt_ptytty () 424rxvt_ptytty_unix::rxvt_ptytty_unix ()
375{ 425{
376 pty = tty = -1; 426 pty = tty = -1;
377 name = 0; 427 name = 0;
428#ifndef NO_SETOWNER_TTYDEV
429 saved = false;
430#endif
431#if UTMP_SUPPORT
432 cmd_pid = 0;
433#endif
378} 434}
379 435
380rxvt_ptytty::~rxvt_ptytty () 436rxvt_ptytty_unix::~rxvt_ptytty_unix ()
381{ 437{
438#if UTMP_SUPPORT
439 logout ();
440#endif
382 put (); 441 put ();
383} 442}
384 443
385void 444void
386
387rxvt_ptytty::close_tty ()
388{
389 if (tty >= 0) close (tty);
390 tty = -1;
391}
392
393void
394rxvt_ptytty::put () 445rxvt_ptytty_unix::put ()
395{ 446{
396#ifndef NO_SETOWNER_TTYDEV 447#ifndef NO_SETOWNER_TTYDEV
397 if (tty >= 0)
398 privileges (RESTORE); 448 privileges (RESTORE);
399#endif 449#endif
400 450
401 if (pty >= 0) close (pty); 451 if (pty >= 0) close (pty);
402 close_tty (); 452 close_tty ();
403 free (name); 453 free (name);
… …
405 pty = tty = -1; 455 pty = tty = -1;
406 name = 0; 456 name = 0;
407} 457}
408 458
409bool 459bool
410rxvt_ptytty::make_controlling_tty ()
411{
412 return control_tty (tty, name) >= 0;
413}
414
415bool
416rxvt_ptytty::get () 460rxvt_ptytty_unix::get ()
417{ 461{
418 /* get master (pty) */ 462 /* get master (pty) */
419 if ((pty = get_pty (&tty, &name)) < 0) 463 if ((pty = get_pty (&tty, &name)) < 0)
420 return false; 464 return false;
421 465
… …
436 } 480 }
437 481
438 return true; 482 return true;
439} 483}
440 484
485#if PTYTTY_HELPER
486
487static int sock_fd;
488static int pid;
489
490struct command
491{
492 enum { get, login, destroy } type;
493
494 rxvt_ptytty *id;
495
496 bool login_shell;
497 int cmd_pid;
498 char hostname[512]; // arbitrary, but should be plenty
499};
500
501struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
502{
503 rxvt_ptytty *id;
504
505 ~rxvt_ptytty_proxy ();
506
507 bool get ();
508 void login (int cmd_pid, bool login_shell, const char *hostname);
509};
510
511bool
512rxvt_ptytty_proxy::get ()
513{
514 command cmd;
515
516 cmd.type = command::get;
517
518 write (sock_fd, &cmd, sizeof (cmd));
519
520 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
521 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
522
523 if (!id)
524 return false;
525
526 if ((pty = rxvt_recv_fd (sock_fd)) < 0
527 || (tty = rxvt_recv_fd (sock_fd)) < 0)
528 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
529
530 return true;
531}
532
533void
534rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
535{
536 command cmd;
537
538 cmd.type = command::login;
539 cmd.id = id;
540 cmd.cmd_pid = cmd_pid;
541 cmd.login_shell = login_shell;
542 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
543
544 write (sock_fd, &cmd, sizeof (cmd));
545}
546
547rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
548{
549 command cmd;
550
551 cmd.type = command::destroy;
552 cmd.id = id;
553
554 write (sock_fd, &cmd, sizeof (cmd));
555}
556
557static
558void serve ()
559{
560 command cmd;
561 vector<rxvt_ptytty *> ptys;
562
563 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
564 {
565 if (cmd.type == command::get)
566 {
567 // -> id ptyfd ttyfd
568 cmd.id = new rxvt_ptytty_unix;
569
570 if (cmd.id->get ())
571 {
572 write (sock_fd, &cmd.id, sizeof (cmd.id));
573 ptys.push_back (cmd.id);
574
575 rxvt_send_fd (sock_fd, cmd.id->pty);
576 rxvt_send_fd (sock_fd, cmd.id->tty);
577 }
578 else
579 {
580 delete cmd.id;
581 cmd.id = 0;
582 write (sock_fd, &cmd.id, sizeof (cmd.id));
583 }
584 }
585 else if (cmd.type == command::login)
586 {
587#if UTMP_SUPPORT
588 if (find (ptys.begin (), ptys.end (), cmd.id))
589 {
590 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
591 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
592 }
593#endif
594 }
595 else if (cmd.type == command::destroy)
596 {
597 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
598
599 if (pty)
600 {
601 delete *pty;
602 ptys.erase (pty);
603 }
604 }
605 else
606 break;
607 }
608
609 // destroy all ptys
610 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
611 delete *i;
612}
613
614void rxvt_ptytty_server ()
615{
616 int sv[2];
617
618 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
619 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
620
621 pid = fork ();
622
623 if (pid < 0)
624 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
625
626 if (pid)
627 {
628 // client, urxvt
629 sock_fd = sv[0];
630 close (sv[1]);
631 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
632 }
633 else
634 {
635 setgid (getegid ());
636 setuid (geteuid ());
637
638 // server, pty-helper
639 sock_fd = sv[1];
640
641 for (int fd = 0; fd < 1023; fd++)
642 if (fd != sock_fd && fd != 1)
643 close (fd);
644
645 serve ();
646 _exit (EXIT_SUCCESS);
647 }
648}
649#endif
650
651// a "factory" *g*
652rxvt_ptytty *
653rxvt_new_ptytty ()
654{
655#if PTYTTY_HELPER
656 if (pid > 0)
657 // use helper process
658 return new rxvt_ptytty_proxy;
659 else
660#endif
661 return new rxvt_ptytty_unix;
662}
663
441/*----------------------- end-of-file (C source) -----------------------*/ 664/*----------------------- end-of-file (C source) -----------------------*/
442 665

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines