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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.26 by root, Mon Jan 2 15:10:18 2006 UTC vs.
Revision 1.52 by root, Thu Jan 19 20:30:36 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#ifdef HAVE_PTY_H 44#if defined(HAVE_PTY_H)
52# include <pty.h> 45# include <pty.h>
53#endif 46#elif defined(HAVE_LIBUTIL_H)
54
55// better do this via configure, but....
56#if defined(__FreeBSD__)
57# include <libutil.h> 47# include <libutil.h>
58#elif defined(__DARWIN__) || (defined (__MACH__) && defined (__APPLE__)) 48#elif defined(HAVE_UTIL_H)
59# include <util.h> 49# include <util.h>
60#endif 50#endif
61 51
62#include <cstdio> 52#include <cstdio>
63#include <grp.h> 53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58
59/////////////////////////////////////////////////////////////////////////////
64 60
65/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
66 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
67 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
68/* 64/*
69 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
70 * 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.
71 * 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
72 */ 68 */
73static int 69static inline int
74get_pty (int *fd_tty, char **ttydev) 70get_pty_streams (int *fd_tty, char **ttydev)
75{ 71{
72#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
73# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
76 int pfd; 74 int pfd;
77 75
76# if defined(PTYS_ARE_GETPT)
77 pfd = getpt();
78# elif defined(PTYS_ARE_POSIX)
79 pfd = posix_openpt (O_RDWR);
80# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
82# endif
83 if (pfd >= 0)
84 {
85 if (grantpt (pfd) == 0 /* change slave permissions */
86 && unlockpt (pfd) == 0)
87 { /* slave now unlocked */
88 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
89 return pfd;
90 }
91
92 close (pfd);
93 }
94# endif
95#endif
96
97 return -1;
98}
99
100static inline int
101get_pty_openpty (int *fd_tty, char **ttydev)
102{
78#ifdef PTYS_ARE_OPENPTY 103#ifdef PTYS_ARE_OPENPTY
79 char tty_name[sizeof "/dev/pts/????\0"]; 104 int pfd;
80 105 int res;
106 char tty_name[32];
107
81 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
109 if (res != -1)
82 { 110 {
83 *ttydev = strdup (tty_name); 111 *ttydev = strdup (tty_name);
84 return pfd; 112 return pfd;
85 } 113 }
86#endif 114#endif
87 115
116 return -1;
117}
118
119static inline int
120get_pty__getpty (int *fd_tty, char **ttydev)
121{
88#ifdef PTYS_ARE__GETPTY 122#ifdef PTYS_ARE__GETPTY
123 int pfd;
124
89 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
90 if (*ttydev != NULL) 126 if (*ttydev != NULL)
91 return pfd; 127 return pfd;
92#endif 128#endif
93 129
94#ifdef PTYS_ARE_GETPTY 130 return -1;
95 char *ptydev; 131}
96 132
97 while ((ptydev = getpty ()) != NULL) 133static inline int
98 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 134get_pty_ptc (int *fd_tty, char **ttydev)
99 { 135{
100 *ttydev = ptydev;
101 return pfd;
102 }
103#endif
104
105#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
106# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
107
108 {
109# ifdef PTYS_ARE_GETPT
110 pfd = getpt ();
111# else
112 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
113# endif
114
115 if (pfd >= 0)
116 {
117 if (grantpt (pfd) == 0 /* change slave permissions */
118 && unlockpt (pfd) == 0)
119 { /* slave now unlocked */
120 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
121 return pfd;
122 }
123 close (pfd);
124 }
125 }
126# endif
127#endif
128
129#ifdef PTYS_ARE_PTC 136#ifdef PTYS_ARE_PTC
137 int pfd;
138
130 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
131 { 140 {
132 *ttydev = strdup (ttyname (pfd)); 141 *ttydev = strdup (ttyname (pfd));
133 return pfd; 142 return pfd;
134 } 143 }
135#endif 144#endif
136 145
146 return -1;
147}
148
149static inline int
150get_pty_clone (int *fd_tty, char **ttydev)
151{
137#ifdef PTYS_ARE_CLONE 152#ifdef PTYS_ARE_CLONE
153 int pfd;
154
138 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 155 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
139 { 156 {
140 *ttydev = strdup (ptsname (pfd)); 157 *ttydev = strdup (ptsname (pfd));
141 return pfd; 158 return pfd;
142 } 159 }
143#endif 160#endif
144 161
162 return -1;
163}
164
165static inline int
166get_pty_numeric (int *fd_tty, char **ttydev)
167{
145#ifdef PTYS_ARE_NUMERIC 168#ifdef PTYS_ARE_NUMERIC
146 { 169 int pfd;
147 int idx; 170 int idx;
148 char *c1, *c2; 171 char *c1, *c2;
149 char pty_name[] = "/dev/ptyp???"; 172 char pty_name[] = "/dev/ptyp???";
150 char tty_name[] = "/dev/ttyp???"; 173 char tty_name[] = "/dev/ttyp???";
151 174
152 c1 = &(pty_name[sizeof (pty_name) - 4]); 175 c1 = &(pty_name[sizeof (pty_name) - 4]);
153 c2 = &(tty_name[sizeof (tty_name) - 4]); 176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
154 for (idx = 0; idx < 256; idx++) 178 for (idx = 0; idx < 256; idx++)
155 { 179 {
156 sprintf (c1, "%d", idx); 180 sprintf (c1, "%d", idx);
157 sprintf (c2, "%d", idx); 181 sprintf (c2, "%d", idx);
182
158 if (access (tty_name, F_OK) < 0) 183 if (access (tty_name, F_OK) < 0)
159 { 184 {
160 idx = 256; 185 idx = 256;
161 break; 186 break;
162 } 187 }
163 188
164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
165 { 190 {
166 if (access (tty_name, R_OK | W_OK) == 0) 191 if (access (tty_name, R_OK | W_OK) == 0)
167 { 192 {
168 *ttydev = strdup (tty_name); 193 *ttydev = strdup (tty_name);
169 return pfd; 194 return pfd;
170 } 195 }
171 196
172 close (pfd); 197 close (pfd);
173 } 198 }
174 } 199 }
175 }
176#endif 200#endif
177 201
202 return -1;
203}
204
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
178#ifdef PTYS_ARE_SEARCHED 208#ifdef PTYS_ARE_SEARCHED
179 {
180 const char *c1, *c2;
181 char pty_name[] = "/dev/pty??";
182 char tty_name[] = "/dev/tty??";
183
184# ifndef PTYCHAR1 209# ifndef PTYCHAR1
185# define PTYCHAR1 "pqrstuvwxyz" 210# define PTYCHAR1 "pqrstuvwxyz"
186# endif 211# endif
187# ifndef PTYCHAR2 212# ifndef PTYCHAR2
188# define PTYCHAR2 "0123456789abcdef" 213# define PTYCHAR2 "0123456789abcdef"
189# endif 214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
190 219
191 for (c1 = PTYCHAR1; *c1; c1++) 220 for (c1 = PTYCHAR1; *c1; c1++)
192 { 221 {
193 pty_name[ (sizeof (pty_name) - 3)] = 222 pty_name[ (sizeof (pty_name) - 3)] =
194 tty_name[ (sizeof (pty_name) - 3)] = *c1; 223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
195 for (c2 = PTYCHAR2; *c2; c2++) 225 for (c2 = PTYCHAR2; *c2; c2++)
196 { 226 {
197 pty_name[ (sizeof (pty_name) - 2)] = 227 pty_name[ (sizeof (pty_name) - 2)] =
198 tty_name[ (sizeof (pty_name) - 2)] = *c2; 228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
199 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
200 { 231 {
201 if (access (tty_name, R_OK | W_OK) == 0) 232 if (access (tty_name, R_OK | W_OK) == 0)
202 { 233 {
203 *ttydev = strdup (tty_name); 234 *ttydev = strdup (tty_name);
204 return pfd; 235 return pfd;
205 } 236 }
206 237
207 close (pfd); 238 close (pfd);
208 } 239 }
209 } 240 }
210 } 241 }
211 }
212#endif 242#endif
243
244 return -1;
245}
246
247static int
248get_pty (int *fd_tty, char **ttydev)
249{
250 int pfd;
251
252 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
253 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
254 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
255 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
256 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
257 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
258 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
259 return pfd;
213 260
214 return -1; 261 return -1;
215} 262}
216 263
217/*----------------------------------------------------------------------*/ 264/*----------------------------------------------------------------------*/
… …
227/*----------------------------------------------------------------------*/ 274/*----------------------------------------------------------------------*/
228/* 275/*
229 * Make our tty a controlling tty so that /dev/tty points to us 276 * Make our tty a controlling tty so that /dev/tty points to us
230 */ 277 */
231static int 278static int
232control_tty (int fd_tty, const char *ttydev) 279control_tty (int fd_tty)
233{ 280{
234#ifndef __QNX__
235 int fd;
236
237 /* ---------------------------------------- */
238# ifdef HAVE_SETSID
239 setsid (); 281 setsid ();
240# endif
241# if defined(HAVE_SETPGID)
242 setpgid (0, 0);
243# elif defined(HAVE_SETPGRP)
244 setpgrp (0, 0);
245# endif
246 282
247 /* ---------------------------------------- */
248# ifdef TIOCNOTTY
249 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
250 if (fd >= 0)
251 {
252 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
253 close (fd);
254 }
255# endif
256
257 /* ---------------------------------------- */
258 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
259 if (fd >= 0)
260 close (fd); /* ouch: still have controlling tty */
261
262 /* ---------------------------------------- */
263#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
264 /* 284 /*
265 * Push STREAMS modules: 285 * Push STREAMS modules:
266 * ptem: pseudo-terminal hardware emulation module. 286 * ptem: pseudo-terminal hardware emulation module.
267 * ldterm: standard terminal line discipline. 287 * ldterm: standard terminal line discipline.
… …
285 ioctl (fd_tty, I_PUSH, "ptem"); 305 ioctl (fd_tty, I_PUSH, "ptem");
286 ioctl (fd_tty, I_PUSH, "ldterm"); 306 ioctl (fd_tty, I_PUSH, "ldterm");
287 ioctl (fd_tty, I_PUSH, "ttcompat"); 307 ioctl (fd_tty, I_PUSH, "ttcompat");
288 } 308 }
289#endif 309#endif
290 /* ---------------------------------------- */ 310
291# if defined(TIOCSCTTY)
292 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 311 ioctl (fd_tty, TIOCSCTTY, NULL);
293# elif defined(TIOCSETCTTY) 312
294 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
295# else
296 fd = open (ttydev, O_RDWR);
297 if (fd >= 0)
298 close (fd);
299# endif
300 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 313 int fd = open ("/dev/tty", O_WRONLY);
302 if (fd < 0) 314 if (fd < 0)
303 return -1; /* fatal */ 315 return -1; /* fatal */
316
304 close (fd); 317 close (fd);
305 /* ---------------------------------------- */
306#endif /* ! __QNX__ */
307 318
308 return 0; 319 return 0;
309} 320}
310 321
311#ifndef NO_SETOWNER_TTYDEV 322void
323rxvt_ptytty::close_tty ()
324{
325 if (tty < 0)
326 return;
327
328 close (tty);
329 tty = -1;
330}
331
332bool
333rxvt_ptytty::make_controlling_tty ()
334{
335 return control_tty (tty) >= 0;
336}
337
338void
339rxvt_ptytty::set_utf8_mode (bool on)
340{
341#ifdef IUTF8
342 if (pty < 0)
343 return;
344
345 struct termios tio;
346
347 if (tcgetattr (pty, &tio) != -1)
348 {
349 tcflag_t new_cflag = tio.c_iflag;
350
351 if (on)
352 new_cflag |= IUTF8;
353 else
354 new_cflag &= ~IUTF8;
355
356 if (new_cflag != tio.c_iflag)
357 {
358 tio.c_iflag = new_cflag;
359 tcsetattr (pty, TCSANOW, &tio);
360 }
361 }
362#endif
363}
364
312static struct ttyconf { 365static struct ttyconf {
313 gid_t gid; 366 gid_t gid;
314 mode_t mode; 367 mode_t mode;
315 368
316 ttyconf () 369 ttyconf ()
… …
325 } 378 }
326 else 379 else
327#endif /* TTY_GID_SUPPORT */ 380#endif /* TTY_GID_SUPPORT */
328 { 381 {
329 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 382 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
330 gid = getgid (); 383 gid = 0;
331 } 384 }
332 } 385 }
333} ttyconf; 386} ttyconf;
334 387
388rxvt_ptytty_unix::rxvt_ptytty_unix ()
389{
390 name = 0;
391#if UTMP_SUPPORT
392 cmd_pid = 0;
393#endif
394}
395
396rxvt_ptytty_unix::~rxvt_ptytty_unix ()
397{
398#if UTMP_SUPPORT
399 logout ();
400#endif
401 put ();
402}
403
335void 404void
336rxvt_ptytty::privileges (rxvt_privaction action) 405rxvt_ptytty_unix::put ()
337{ 406{
338 if (!name || !*name) 407 chmod (name, RESTORE_TTY_MODE);
339 return; 408 chown (name, 0, ttyconf.gid);
340 409
341 rxvt_privileges (RESTORE); 410 close_tty ();
342 411
343 if (action == SAVE) 412 if (pty >= 0)
344 { 413 close (pty);
345# ifndef RESET_TTY_TO_COMMON_DEFAULTS
346 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
347 if (lstat (name, &savestat) < 0) /* you lose out */
348 ;
349 else
350# endif
351 {
352 saved = true;
353 chown (name, getuid (), ttyconf.gid); /* fail silently */
354 chmod (name, ttyconf.mode);
355# ifdef HAVE_REVOKE
356 revoke (name);
357# endif
358 }
359 }
360 else
361 { /* action == RESTORE */
362# ifndef RESET_TTY_TO_COMMON_DEFAULTS
363 if (saved)
364 {
365 chmod (name, savestat.st_mode);
366 chown (name, savestat.st_uid, savestat.st_gid);
367 }
368# else
369 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
370 chown (name, 0, 0);
371# endif
372 414
373 } 415 free (name);
374 416
375 rxvt_privileges (IGNORE);
376}
377#endif
378
379rxvt_ptytty::rxvt_ptytty ()
380{
381 pty = tty = -1; 417 pty = tty = -1;
382 name = 0; 418 name = 0;
383#ifndef NO_SETOWNER_TTYDEV
384 saved = false;
385#endif
386}
387
388rxvt_ptytty::~rxvt_ptytty ()
389{
390 put ();
391}
392
393void
394
395rxvt_ptytty::close_tty ()
396{
397 if (tty >= 0) close (tty);
398 tty = -1;
399}
400
401void
402rxvt_ptytty::put ()
403{
404#ifndef NO_SETOWNER_TTYDEV
405 if (tty >= 0)
406 privileges (RESTORE);
407#endif
408
409 if (pty >= 0) close (pty);
410 close_tty ();
411 free (name);
412
413 pty = tty = -1;
414 name = 0;
415} 419}
416 420
417bool 421bool
418rxvt_ptytty::make_controlling_tty ()
419{
420 return control_tty (tty, name) >= 0;
421}
422
423bool
424rxvt_ptytty::get () 422rxvt_ptytty_unix::get ()
425{ 423{
426 /* get master (pty) */ 424 /* get master (pty) */
427 if ((pty = get_pty (&tty, &name)) < 0) 425 if ((pty = get_pty (&tty, &name)) < 0)
428 return false; 426 return false;
429 427
… …
431 429
432 /* get slave (tty) */ 430 /* get slave (tty) */
433 if (tty < 0) 431 if (tty < 0)
434 { 432 {
435#ifndef NO_SETOWNER_TTYDEV 433#ifndef NO_SETOWNER_TTYDEV
436 privileges (SAVE); 434 chown (name, getuid (), ttyconf.gid); /* fail silently */
435 chmod (name, ttyconf.mode);
436# ifdef HAVE_REVOKE
437 revoke (name);
438# endif
437#endif 439#endif
438 440
439 if ((tty = get_tty (name)) < 0) 441 if ((tty = get_tty (name)) < 0)
440 { 442 {
441 put (); 443 put ();
… …
444 } 446 }
445 447
446 return true; 448 return true;
447} 449}
448 450
451#if PTYTTY_HELPER
452
453static int sock_fd;
454static int pid;
455
456struct command
457{
458 enum { get, login, destroy } type;
459
460 rxvt_ptytty *id;
461
462 bool login_shell;
463 int cmd_pid;
464 char hostname[512]; // arbitrary, but should be plenty
465};
466
467struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
468{
469 rxvt_ptytty *id;
470
471 ~rxvt_ptytty_proxy ();
472
473 bool get ();
474 void login (int cmd_pid, bool login_shell, const char *hostname);
475};
476
477bool
478rxvt_ptytty_proxy::get ()
479{
480 command cmd;
481
482 cmd.type = command::get;
483
484 write (sock_fd, &cmd, sizeof (cmd));
485
486 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
487 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
488
489 if (!id)
490 return false;
491
492 if ((pty = rxvt_recv_fd (sock_fd)) < 0
493 || (tty = rxvt_recv_fd (sock_fd)) < 0)
494 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
495
496 return true;
497}
498
449void 499void
450rxvt_ptytty::set_utf8_mode (bool on) 500rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
451{ 501{
452#ifdef IUTF8 502 command cmd;
453 if (pty != -1)
454 {
455 struct termios tio;
456 503
457 if (tcgetattr (pty, &tio) != -1) 504 cmd.type = command::login;
505 cmd.id = id;
506 cmd.cmd_pid = cmd_pid;
507 cmd.login_shell = login_shell;
508 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
509
510 write (sock_fd, &cmd, sizeof (cmd));
511}
512
513rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
514{
515 command cmd;
516
517 cmd.type = command::destroy;
518 cmd.id = id;
519
520 write (sock_fd, &cmd, sizeof (cmd));
521}
522
523static
524void serve ()
525{
526 command cmd;
527 vector<rxvt_ptytty *> ptys;
528
529 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
530 {
531 if (cmd.type == command::get)
532 {
533 // -> id ptyfd ttyfd
534 cmd.id = new rxvt_ptytty_unix;
535
536 if (cmd.id->get ())
458 { 537 {
459 tcflag_t new_cflag = tio.c_iflag; 538 write (sock_fd, &cmd.id, sizeof (cmd.id));
539 ptys.push_back (cmd.id);
460 540
461 if (on) 541 rxvt_send_fd (sock_fd, cmd.id->pty);
462 new_cflag |= IUTF8; 542 rxvt_send_fd (sock_fd, cmd.id->tty);
543 }
463 else 544 else
464 new_cflag &= ~IUTF8;
465
466 if (new_cflag != tio.c_iflag)
467 { 545 {
468 tio.c_iflag = new_cflag; 546 delete cmd.id;
469 tcsetattr (pty, TCSANOW, &tio); 547 cmd.id = 0;
548 write (sock_fd, &cmd.id, sizeof (cmd.id));
470 } 549 }
471 } 550 }
551 else if (cmd.type == command::login)
552 {
553#if UTMP_SUPPORT
554 if (find (ptys.begin (), ptys.end (), cmd.id))
555 {
556 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
557 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
558 }
559#endif
560 }
561 else if (cmd.type == command::destroy)
562 {
563 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
564
565 if (pty)
566 {
567 delete *pty;
568 ptys.erase (pty);
569 }
570 }
571 else
572 break;
573 }
574
575 // destroy all ptys
576 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
577 delete *i;
578}
579
580void rxvt_ptytty_server ()
581{
582 int sv[2];
583
584 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
585 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
586
587 pid = fork ();
588
589 if (pid < 0)
590 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
591
592 if (pid)
472 } 593 {
594 // client, urxvt
595 sock_fd = sv[0];
596 close (sv[1]);
597 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
598 }
599 else
600 {
601 // server, pty-helper
602 sock_fd = sv[1];
603
604 for (int fd = 0; fd < 1023; fd++)
605 if (fd != sock_fd)
606 close (fd);
607
608 serve ();
609 _exit (EXIT_SUCCESS);
610 }
611}
612
473#endif 613#endif
614
615// a "factory" *g*
616rxvt_ptytty *
617rxvt_new_ptytty ()
618{
619#if PTYTTY_HELPER
620 if (pid > 0)
621 // use helper process
622 return new rxvt_ptytty_proxy;
623 else
624#endif
625 return new rxvt_ptytty_unix;
474} 626}
475 627
476/*----------------------- end-of-file (C source) -----------------------*/ 628/*----------------------- end-of-file (C source) -----------------------*/
477 629

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