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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.4 by pcg, Tue Dec 2 21:49:46 2003 UTC vs.
Revision 1.53 by ayin, Sat Jan 21 18:15:26 2006 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: ptytty.c 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * $Id: ptytty.C,v 1.4 2003/12/02 21:49:46 pcg Exp $
5 * 4 *
6 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
7 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.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#include <stdio.h>
31#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 27#include <cstdlib>
33#endif 28#include <cstring>
34#ifdef HAVE_SYS_TYPES_H 29
35# include <sys/types.h> 30#include <sys/types.h>
36#endif 31#include <sys/socket.h>
37#ifdef HAVE_UNISTD_H
38# include <unistd.h> 32#include <unistd.h>
39#endif
40#if defined(HAVE_STRING_H)
41# include <string.h>
42#endif
43#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 33#include <fcntl.h>
45#endif 34
46#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
47# include <sys/ioctl.h> 36# include <sys/ioctl.h>
48#endif 37#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 38#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
50# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
51#endif 40#endif
52 41#ifdef HAVE_ISASTREAM
53#ifdef DEBUG_TTY 42# include <stropts.h>
54# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
55#else
56# define D_TTY(x)
57#endif 43#endif
44#if defined(HAVE_PTY_H)
45# include <pty.h>
46#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h>
48#elif defined(HAVE_UTIL_H)
49# include <util.h>
50#endif
51#ifdef TTY_GID_SUPPORT
52#include <grp.h>
53#endif
54
55#include <cstdio>
56
57#include "rxvtutil.h"
58#include "fdpass.h"
59#include "ptytty.h"
60
61/////////////////////////////////////////////////////////////////////////////
58 62
59/* ------------------------------------------------------------------------- * 63/* ------------------------------------------------------------------------- *
60 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 64 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
61 * ------------------------------------------------------------------------- */ 65 * ------------------------------------------------------------------------- */
62/* 66/*
63 * Returns pty file descriptor, or -1 on failure 67 * Returns pty file descriptor, or -1 on failure
64 * If successful, ttydev is set to the name of the slave device. 68 * If successful, ttydev is set to the name of the slave device.
65 * fd_tty _may_ also be set to an open fd to the slave device 69 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 70 */
67/* EXTPROTO */ 71#if defined(UNIX98_PTY)
68int 72static int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 73get_pty (int *fd_tty, char **ttydev)
70{ 74{
71 int pfd; 75 int pfd;
72 76
73#ifdef PTYS_ARE_OPENPTY 77# if defined(HAVE_GETPT)
78 pfd = getpt();
79# elif defined(HAVE_POSIX_OPENPT)
80 pfd = posix_openpt (O_RDWR);
81# else
82 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
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 }
74 92
75 char tty_name[sizeof "/dev/pts/????\0"]; 93 close (pfd);
94 }
76 95
96 return -1;
97}
98#elif defined(HAVE_OPENPTY)
99static int
100get_pty (int *fd_tty, char **ttydev)
101{
102 int pfd;
103 int res;
104 char tty_name[32];
105
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
107 if (res != -1)
78 { 108 {
79 *ttydev = strdup(tty_name); 109 *ttydev = strdup (tty_name);
80 return pfd; 110 return pfd;
81 } 111 }
82#endif
83 112
84#ifdef PTYS_ARE__GETPTY 113 return -1;
114}
115#elif defined(HAVE__GETPTY)
116static int
117get_pty (int *fd_tty, char **ttydev)
118{
119 int pfd;
120
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 121 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 122 if (*ttydev != NULL)
87 return pfd; 123 return pfd;
88#endif
89 124
90#ifdef PTYS_ARE_GETPTY 125 return -1;
126}
127#elif defined(HAVE_DEV_PTC)
128static int
129get_pty (int *fd_tty, char **ttydev)
130{
131 int pfd;
91 132
92 char *ptydev;
93
94 while ((ptydev = getpty()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 {
97 *ttydev = ptydev;
98 return pfd;
99 }
100#endif
101
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104
105 {
106# ifdef PTYS_ARE_GETPT
107 pfd = getpt();
108# else
109
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 = 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
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 133 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 134 {
130 *ttydev = ttyname(pfd); 135 *ttydev = strdup (ttyname (pfd));
131 return pfd; 136 return pfd;
132 } 137 }
133#endif
134 138
135#ifdef PTYS_ARE_CLONE 139 return -1;
140}
141#elif defined(HAVE_DEV_CLONE)
142static int
143get_pty (int *fd_tty, char **ttydev)
144{
145 int pfd;
146
136 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 147 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 148 {
138 *ttydev = ptsname(pfd); 149 *ttydev = strdup (ptsname (pfd));
139 return pfd; 150 return pfd;
140 } 151 }
141#endif
142 152
143#ifdef PTYS_ARE_NUMERIC
144 {
145 int idx;
146 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???";
149
150 c1 = &(pty_name[sizeof(pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++)
153 {
154 sprintf(c1, "%d", idx);
155 sprintf(c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0)
157 {
158 idx = 256;
159 break;
160 }
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 {
163 if (access(tty_name, R_OK | W_OK) == 0)
164 {
165 *ttydev = strdup(tty_name);
166 return pfd;
167 }
168 close(pfd);
169 }
170 }
171 }
172#endif
173#ifdef PTYS_ARE_SEARCHED
174 {
175 const char *c1, *c2;
176 char pty_name[] = "/dev/pty??";
177 char tty_name[] = "/dev/tty??";
178
179# ifndef PTYCHAR1
180# define PTYCHAR1 "pqrstuvwxyz"
181# endif
182# ifndef PTYCHAR2
183# define PTYCHAR2 "0123456789abcdef"
184# endif
185
186 for (c1 = PTYCHAR1; *c1; c1++)
187 {
188 pty_name[(sizeof(pty_name) - 3)] =
189 tty_name[(sizeof(pty_name) - 3)] = *c1;
190 for (c2 = PTYCHAR2; *c2; c2++)
191 {
192 pty_name[(sizeof(pty_name) - 2)] =
193 tty_name[(sizeof(pty_name) - 2)] = *c2;
194 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
195 {
196 if (access(tty_name, R_OK | W_OK) == 0)
197 {
198 *ttydev = strdup(tty_name);
199 return pfd;
200 }
201 close(pfd);
202 }
203 }
204 }
205 }
206#endif
207 return -1; 153 return -1;
208} 154}
155#else
156/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
157static int
158get_pty (int *fd_tty, char **ttydev)
159{
160 int pfd;
161 int i;
162 char pty_name[32];
163 char tty_name[32];
164 const char *majors = "pqrstuvwxyzabcde";
165 const char *minors = "0123456789abcdef";
166 for (i = 0; i < 256; i++)
167 {
168 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
169 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
171 {
172 snprintf(pty_name, 32, "/dev/ptyp%d", i);
173 snprintf(tty_name, 32, "/dev/ttyp%d", i);
174 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
175 continue;
176 }
177 if (access (tty_name, R_OK | W_OK) == 0)
178 {
179 *ttydev = strdup (tty_name);
180 return pfd;
181 }
182
183 close (pfd);
184 }
185}
186#endif
209 187
210/*----------------------------------------------------------------------*/ 188/*----------------------------------------------------------------------*/
211/* 189/*
212 * Returns tty file descriptor, or -1 on failure 190 * Returns tty file descriptor, or -1 on failure
213 */ 191 */
214/* EXTPROTO */ 192static int
215int
216rxvt_get_tty (const char *ttydev) 193get_tty (char *ttydev)
217{ 194{
218 return open (ttydev, O_RDWR | O_NOCTTY, 0); 195 return open (ttydev, O_RDWR | O_NOCTTY, 0);
219} 196}
220 197
221/*----------------------------------------------------------------------*/ 198/*----------------------------------------------------------------------*/
222/* 199/*
223 * Make our tty a controlling tty so that /dev/tty points to us 200 * Make our tty a controlling tty so that /dev/tty points to us
224 */ 201 */
225/* EXTPROTO */ 202static int
226int 203control_tty (int fd_tty)
227rxvt_control_tty (int fd_tty, const char *ttydev)
228{ 204{
229#ifndef __QNX__
230 int fd;
231
232 D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev));
233 /* ---------------------------------------- */
234# ifdef HAVE_SETSID
235 setsid (); 205 setsid ();
236# endif
237# if defined(HAVE_SETPGID)
238 setpgid (0, 0);
239# elif defined(HAVE_SETPGRP)
240 setpgrp (0, 0);
241# endif
242 /* ---------------------------------------- */
243# ifdef TIOCNOTTY
244 206
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0)
248 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd);
251 }
252# endif
253 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
255 D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */
258 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 207#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
260 /* 208 /*
261 * Push STREAMS modules: 209 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 210 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 211 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 212 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 213 *
266 * After we push the STREAMS modules, the first open() on the slave side 214 * After we push the STREAMS modules, the first open () on the slave side
267 * (i.e. the next section between the dashes giving us "tty opened OK") 215 * (i.e. the next section between the dashes giving us "tty opened OK")
268 * should make the "ptem" (or "ldterm" depending upon either which OS 216 * should make the "ptem" (or "ldterm" depending upon either which OS
269 * version or which set of manual pages you have) module give us a 217 * version or which set of manual pages you have) module give us a
270 * controlling terminal. We must already have close()d the master side 218 * controlling terminal. We must already have close ()d the master side
271 * fd in this child process before we push STREAMS modules on because the 219 * fd in this child process before we push STREAMS modules on because the
272 * documentation is really unclear about whether it is any close() on 220 * documentation is really unclear about whether it is any close () on
273 * the master side or the last close() - i.e. a proper STREAMS dismantling 221 * the master side or the last close () - i.e. a proper STREAMS dismantling
274 * close() - on the master side which causes a hang up to be sent 222 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 223 * through - Geoff Wing
276 */ 224 */
277# ifdef HAVE_ISASTREAM 225# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 226 if (isastream (fd_tty) == 1)
279# endif 227# endif
280 { 228 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 229 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 230 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 231 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 232 }
286#endif 233#endif
287 /* ---------------------------------------- */ 234
288# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 235 ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 236
291# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd));
294# else
295 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0)
298 close(fd);
299# endif
300 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 237 int fd = open ("/dev/tty", O_WRONLY);
302 D_TTY ((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 238 if (fd < 0)
304 return -1; /* fatal */ 239 return -1; /* fatal */
240
305 close (fd); 241 close (fd);
306 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp()));
308 /* ---------------------------------------- */
309#endif /* ! __QNX__ */
310 242
311 return 0; 243 return 0;
312} 244}
245
246void
247rxvt_ptytty::close_tty ()
248{
249 if (tty < 0)
250 return;
251
252 close (tty);
253 tty = -1;
254}
255
256bool
257rxvt_ptytty::make_controlling_tty ()
258{
259 return control_tty (tty) >= 0;
260}
261
262void
263rxvt_ptytty::set_utf8_mode (bool on)
264{
265#ifdef IUTF8
266 if (pty < 0)
267 return;
268
269 struct termios tio;
270
271 if (tcgetattr (pty, &tio) != -1)
272 {
273 tcflag_t new_cflag = tio.c_iflag;
274
275 if (on)
276 new_cflag |= IUTF8;
277 else
278 new_cflag &= ~IUTF8;
279
280 if (new_cflag != tio.c_iflag)
281 {
282 tio.c_iflag = new_cflag;
283 tcsetattr (pty, TCSANOW, &tio);
284 }
285 }
286#endif
287}
288
289static struct ttyconf {
290 gid_t gid;
291 mode_t mode;
292
293 ttyconf ()
294 {
295#ifdef TTY_GID_SUPPORT
296 struct group *gr = getgrnam ("tty");
297
298 if (gr)
299 { /* change group ownership of tty to "tty" */
300 mode = S_IRUSR | S_IWUSR | S_IWGRP;
301 gid = gr->gr_gid;
302 }
303 else
304#endif /* TTY_GID_SUPPORT */
305 {
306 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
307 gid = 0;
308 }
309 }
310} ttyconf;
311
312rxvt_ptytty_unix::rxvt_ptytty_unix ()
313{
314 name = 0;
315#if UTMP_SUPPORT
316 cmd_pid = 0;
317#endif
318}
319
320rxvt_ptytty_unix::~rxvt_ptytty_unix ()
321{
322#if UTMP_SUPPORT
323 logout ();
324#endif
325 put ();
326}
327
328void
329rxvt_ptytty_unix::put ()
330{
331 chmod (name, RESTORE_TTY_MODE);
332 chown (name, 0, ttyconf.gid);
333
334 close_tty ();
335
336 if (pty >= 0)
337 close (pty);
338
339 free (name);
340
341 pty = tty = -1;
342 name = 0;
343}
344
345bool
346rxvt_ptytty_unix::get ()
347{
348 /* get master (pty) */
349 if ((pty = get_pty (&tty, &name)) < 0)
350 return false;
351
352 fcntl (pty, F_SETFL, O_NONBLOCK);
353
354 /* get slave (tty) */
355 if (tty < 0)
356 {
357#ifndef NO_SETOWNER_TTYDEV
358 chown (name, getuid (), ttyconf.gid); /* fail silently */
359 chmod (name, ttyconf.mode);
360# ifdef HAVE_REVOKE
361 revoke (name);
362# endif
363#endif
364
365 if ((tty = get_tty (name)) < 0)
366 {
367 put ();
368 return false;
369 }
370 }
371
372 return true;
373}
374
375#if PTYTTY_HELPER
376
377static int sock_fd;
378static int pid;
379
380struct command
381{
382 enum { get, login, destroy } type;
383
384 rxvt_ptytty *id;
385
386 bool login_shell;
387 int cmd_pid;
388 char hostname[512]; // arbitrary, but should be plenty
389};
390
391struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
392{
393 rxvt_ptytty *id;
394
395 ~rxvt_ptytty_proxy ();
396
397 bool get ();
398 void login (int cmd_pid, bool login_shell, const char *hostname);
399};
400
401bool
402rxvt_ptytty_proxy::get ()
403{
404 command cmd;
405
406 cmd.type = command::get;
407
408 write (sock_fd, &cmd, sizeof (cmd));
409
410 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
411 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
412
413 if (!id)
414 return false;
415
416 if ((pty = rxvt_recv_fd (sock_fd)) < 0
417 || (tty = rxvt_recv_fd (sock_fd)) < 0)
418 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
419
420 return true;
421}
422
423void
424rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
425{
426 command cmd;
427
428 cmd.type = command::login;
429 cmd.id = id;
430 cmd.cmd_pid = cmd_pid;
431 cmd.login_shell = login_shell;
432 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
433
434 write (sock_fd, &cmd, sizeof (cmd));
435}
436
437rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
438{
439 command cmd;
440
441 cmd.type = command::destroy;
442 cmd.id = id;
443
444 write (sock_fd, &cmd, sizeof (cmd));
445}
446
447static
448void serve ()
449{
450 command cmd;
451 vector<rxvt_ptytty *> ptys;
452
453 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
454 {
455 if (cmd.type == command::get)
456 {
457 // -> id ptyfd ttyfd
458 cmd.id = new rxvt_ptytty_unix;
459
460 if (cmd.id->get ())
461 {
462 write (sock_fd, &cmd.id, sizeof (cmd.id));
463 ptys.push_back (cmd.id);
464
465 rxvt_send_fd (sock_fd, cmd.id->pty);
466 rxvt_send_fd (sock_fd, cmd.id->tty);
467 }
468 else
469 {
470 delete cmd.id;
471 cmd.id = 0;
472 write (sock_fd, &cmd.id, sizeof (cmd.id));
473 }
474 }
475 else if (cmd.type == command::login)
476 {
477#if UTMP_SUPPORT
478 if (find (ptys.begin (), ptys.end (), cmd.id))
479 {
480 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
481 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
482 }
483#endif
484 }
485 else if (cmd.type == command::destroy)
486 {
487 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
488
489 if (pty)
490 {
491 delete *pty;
492 ptys.erase (pty);
493 }
494 }
495 else
496 break;
497 }
498
499 // destroy all ptys
500 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
501 delete *i;
502}
503
504void rxvt_ptytty_server ()
505{
506 int sv[2];
507
508 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
509 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
510
511 pid = fork ();
512
513 if (pid < 0)
514 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
515
516 if (pid)
517 {
518 // client, urxvt
519 sock_fd = sv[0];
520 close (sv[1]);
521 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
522 }
523 else
524 {
525 // server, pty-helper
526 sock_fd = sv[1];
527
528 for (int fd = 0; fd < 1023; fd++)
529 if (fd != sock_fd)
530 close (fd);
531
532 serve ();
533 _exit (EXIT_SUCCESS);
534 }
535}
536
537#endif
538
539// a "factory" *g*
540rxvt_ptytty *
541rxvt_new_ptytty ()
542{
543#if PTYTTY_HELPER
544 if (pid > 0)
545 // use helper process
546 return new rxvt_ptytty_proxy;
547 else
548#endif
549 return new rxvt_ptytty_unix;
550}
551
313/*----------------------- end-of-file (C source) -----------------------*/ 552/*----------------------- end-of-file (C source) -----------------------*/
553

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