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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 1.48 by ayin, Thu Jan 19 10:44:44 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#ifdef NO_SETOWNER_TTYDEV
76 int pfd; 73 int pfd;
77 74
75# if defined(PTYS_ARE_GETPT)
76 pfd = getpt();
77# elif defined(PTYS_ARE_POSIX)
78 pfd = posix_openpt (O_RDWR);
79# else
80 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
81# endif
82 if (pfd >= 0)
83 {
84 if (grantpt (pfd) == 0 /* change slave permissions */
85 && unlockpt (pfd) == 0)
86 { /* slave now unlocked */
87 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
88 return pfd;
89 }
90
91 close (pfd);
92 }
93#endif
94
95 return -1;
96}
97
98static inline int
99get_pty_openpty (int *fd_tty, char **ttydev)
100{
78#ifdef PTYS_ARE_OPENPTY 101#ifdef PTYS_ARE_OPENPTY
102 int pfd;
103 int res;
79 char tty_name[sizeof "/dev/pts/????\0"]; 104 char tty_name[sizeof "/dev/pts/????\0"];
80 105
81 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
107 if (res != -1)
82 { 108 {
83 *ttydev = strdup (tty_name); 109 *ttydev = strdup (tty_name);
84 return pfd; 110 return pfd;
85 } 111 }
86#endif 112#endif
87 113
114 return -1;
115}
116
117static inline int
118get_pty__getpty (int *fd_tty, char **ttydev)
119{
88#ifdef PTYS_ARE__GETPTY 120#ifdef PTYS_ARE__GETPTY
121 int pfd;
122
89 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 123 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
90 if (*ttydev != NULL) 124 if (*ttydev != NULL)
91 return pfd; 125 return pfd;
92#endif 126#endif
93 127
94#ifdef PTYS_ARE_GETPTY 128 return -1;
95 char *ptydev; 129}
96 130
97 while ((ptydev = getpty ()) != NULL) 131static inline int
98 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 132get_pty_ptc (int *fd_tty, char **ttydev)
99 { 133{
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 134#ifdef PTYS_ARE_PTC
135 int pfd;
136
130 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
131 { 138 {
132 *ttydev = strdup (ttyname (pfd)); 139 *ttydev = strdup (ttyname (pfd));
133 return pfd; 140 return pfd;
134 } 141 }
135#endif 142#endif
136 143
144 return -1;
145}
146
147static inline int
148get_pty_clone (int *fd_tty, char **ttydev)
149{
137#ifdef PTYS_ARE_CLONE 150#ifdef PTYS_ARE_CLONE
151 int pfd;
152
138 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 153 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
139 { 154 {
140 *ttydev = strdup (ptsname (pfd)); 155 *ttydev = strdup (ptsname (pfd));
141 return pfd; 156 return pfd;
142 } 157 }
143#endif 158#endif
144 159
160 return -1;
161}
162
163static inline int
164get_pty_numeric (int *fd_tty, char **ttydev)
165{
145#ifdef PTYS_ARE_NUMERIC 166#ifdef PTYS_ARE_NUMERIC
146 { 167 int pfd;
147 int idx; 168 int idx;
148 char *c1, *c2; 169 char *c1, *c2;
149 char pty_name[] = "/dev/ptyp???"; 170 char pty_name[] = "/dev/ptyp???";
150 char tty_name[] = "/dev/ttyp???"; 171 char tty_name[] = "/dev/ttyp???";
151 172
152 c1 = &(pty_name[sizeof (pty_name) - 4]); 173 c1 = &(pty_name[sizeof (pty_name) - 4]);
153 c2 = &(tty_name[sizeof (tty_name) - 4]); 174 c2 = &(tty_name[sizeof (tty_name) - 4]);
175
154 for (idx = 0; idx < 256; idx++) 176 for (idx = 0; idx < 256; idx++)
155 { 177 {
156 sprintf (c1, "%d", idx); 178 sprintf (c1, "%d", idx);
157 sprintf (c2, "%d", idx); 179 sprintf (c2, "%d", idx);
180
158 if (access (tty_name, F_OK) < 0) 181 if (access (tty_name, F_OK) < 0)
159 { 182 {
160 idx = 256; 183 idx = 256;
161 break; 184 break;
162 } 185 }
163 186
164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 187 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
165 { 188 {
166 if (access (tty_name, R_OK | W_OK) == 0) 189 if (access (tty_name, R_OK | W_OK) == 0)
167 { 190 {
168 *ttydev = strdup (tty_name); 191 *ttydev = strdup (tty_name);
169 return pfd; 192 return pfd;
170 } 193 }
171 194
172 close (pfd); 195 close (pfd);
173 } 196 }
174 } 197 }
175 }
176#endif 198#endif
177 199
200 return -1;
201}
202
203static inline int
204get_pty_searched (int *fd_tty, char **ttydev)
205{
178#ifdef PTYS_ARE_SEARCHED 206#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 207# ifndef PTYCHAR1
185# define PTYCHAR1 "pqrstuvwxyz" 208# define PTYCHAR1 "pqrstuvwxyz"
186# endif 209# endif
187# ifndef PTYCHAR2 210# ifndef PTYCHAR2
188# define PTYCHAR2 "0123456789abcdef" 211# define PTYCHAR2 "0123456789abcdef"
189# endif 212# endif
213 int pfd;
214 const char *c1, *c2;
215 char pty_name[] = "/dev/pty??";
216 char tty_name[] = "/dev/tty??";
190 217
191 for (c1 = PTYCHAR1; *c1; c1++) 218 for (c1 = PTYCHAR1; *c1; c1++)
192 { 219 {
193 pty_name[ (sizeof (pty_name) - 3)] = 220 pty_name[ (sizeof (pty_name) - 3)] =
194 tty_name[ (sizeof (pty_name) - 3)] = *c1; 221 tty_name[ (sizeof (pty_name) - 3)] = *c1;
222
195 for (c2 = PTYCHAR2; *c2; c2++) 223 for (c2 = PTYCHAR2; *c2; c2++)
196 { 224 {
197 pty_name[ (sizeof (pty_name) - 2)] = 225 pty_name[ (sizeof (pty_name) - 2)] =
198 tty_name[ (sizeof (pty_name) - 2)] = *c2; 226 tty_name[ (sizeof (pty_name) - 2)] = *c2;
227
199 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 228 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
200 { 229 {
201 if (access (tty_name, R_OK | W_OK) == 0) 230 if (access (tty_name, R_OK | W_OK) == 0)
202 { 231 {
203 *ttydev = strdup (tty_name); 232 *ttydev = strdup (tty_name);
204 return pfd; 233 return pfd;
205 } 234 }
206 235
207 close (pfd); 236 close (pfd);
208 } 237 }
209 } 238 }
210 } 239 }
211 }
212#endif 240#endif
241
242 return -1;
243}
244
245static int
246get_pty (int *fd_tty, char **ttydev)
247{
248 int pfd;
249
250 if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1
251 || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1
252 || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1
253 || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1
254 || (pfd = get_pty_clone (fd_tty, ttydev)) != -1
255 || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1
256 || (pfd = get_pty_searched (fd_tty, ttydev)) != -1)
257 return pfd;
213 258
214 return -1; 259 return -1;
215} 260}
216 261
217/*----------------------------------------------------------------------*/ 262/*----------------------------------------------------------------------*/
… …
227/*----------------------------------------------------------------------*/ 272/*----------------------------------------------------------------------*/
228/* 273/*
229 * Make our tty a controlling tty so that /dev/tty points to us 274 * Make our tty a controlling tty so that /dev/tty points to us
230 */ 275 */
231static int 276static int
232control_tty (int fd_tty, const char *ttydev) 277control_tty (int fd_tty)
233{ 278{
234#ifndef __QNX__
235 int fd;
236
237 /* ---------------------------------------- */
238# ifdef HAVE_SETSID
239 setsid (); 279 setsid ();
240# endif
241# if defined(HAVE_SETPGID)
242 setpgid (0, 0);
243# elif defined(HAVE_SETPGRP)
244 setpgrp (0, 0);
245# endif
246 280
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) 281#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
264 /* 282 /*
265 * Push STREAMS modules: 283 * Push STREAMS modules:
266 * ptem: pseudo-terminal hardware emulation module. 284 * ptem: pseudo-terminal hardware emulation module.
267 * ldterm: standard terminal line discipline. 285 * ldterm: standard terminal line discipline.
… …
285 ioctl (fd_tty, I_PUSH, "ptem"); 303 ioctl (fd_tty, I_PUSH, "ptem");
286 ioctl (fd_tty, I_PUSH, "ldterm"); 304 ioctl (fd_tty, I_PUSH, "ldterm");
287 ioctl (fd_tty, I_PUSH, "ttcompat"); 305 ioctl (fd_tty, I_PUSH, "ttcompat");
288 } 306 }
289#endif 307#endif
290 /* ---------------------------------------- */ 308
291# if defined(TIOCSCTTY)
292 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 309 ioctl (fd_tty, TIOCSCTTY, NULL);
293# elif defined(TIOCSETCTTY) 310
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); 311 int fd = open ("/dev/tty", O_WRONLY);
302 if (fd < 0) 312 if (fd < 0)
303 return -1; /* fatal */ 313 return -1; /* fatal */
314
304 close (fd); 315 close (fd);
305 /* ---------------------------------------- */
306#endif /* ! __QNX__ */
307 316
308 return 0; 317 return 0;
309} 318}
319
320void
321rxvt_ptytty::close_tty ()
322{
323 if (tty < 0)
324 return;
325
326 close (tty);
327 tty = -1;
328}
329
330bool
331rxvt_ptytty::make_controlling_tty ()
332{
333 return control_tty (tty) >= 0;
334}
335
336void
337rxvt_ptytty::set_utf8_mode (bool on)
338{
339#ifdef IUTF8
340 if (pty < 0)
341 return;
342
343 struct termios tio;
344
345 if (tcgetattr (pty, &tio) != -1)
346 {
347 tcflag_t new_cflag = tio.c_iflag;
348
349 if (on)
350 new_cflag |= IUTF8;
351 else
352 new_cflag &= ~IUTF8;
353
354 if (new_cflag != tio.c_iflag)
355 {
356 tio.c_iflag = new_cflag;
357 tcsetattr (pty, TCSANOW, &tio);
358 }
359 }
360#endif
361}
362
363/////////////////////////////////////////////////////////////////////////////
310 364
311#ifndef NO_SETOWNER_TTYDEV 365#ifndef NO_SETOWNER_TTYDEV
312static struct ttyconf { 366static struct ttyconf {
313 gid_t gid; 367 gid_t gid;
314 mode_t mode; 368 mode_t mode;
… …
325 } 379 }
326 else 380 else
327#endif /* TTY_GID_SUPPORT */ 381#endif /* TTY_GID_SUPPORT */
328 { 382 {
329 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 383 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
330 gid = getgid (); 384 gid = 0;
331 } 385 }
332 } 386 }
333} ttyconf; 387} ttyconf;
334 388
389/////////////////////////////////////////////////////////////////////////////
390
335void 391void
336rxvt_ptytty::privileges (rxvt_privaction action) 392rxvt_ptytty_unix::privileges (rxvt_privaction action)
337{ 393{
338 if (!name || !*name) 394 if (!name || !*name)
339 return; 395 return;
340 396
341 rxvt_privileges (RESTORE);
342
343 if (action == SAVE) 397 if (action == SAVE)
344 { 398 {
345# ifndef RESET_TTY_TO_COMMON_DEFAULTS 399 chown (name, getuid (), ttyconf.gid); /* fail silently */
346 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ 400 chmod (name, ttyconf.mode);
347 if (lstat (name, &savestat) < 0) /* you lose out */ 401# ifdef HAVE_REVOKE
348 ; 402 revoke (name);
349 else
350# endif 403# 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 } 404 }
360 else 405 else
361 { /* action == RESTORE */ 406 { /* action == RESTORE */
362# ifndef RESET_TTY_TO_COMMON_DEFAULTS 407 chmod (name, RESTORE_TTY_MODE);
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); 408 chown (name, 0, ttyconf.gid);
409 }
410}
371# endif 411#endif
372 412
373 }
374
375 rxvt_privileges (IGNORE);
376}
377#endif
378
379rxvt_ptytty::rxvt_ptytty () 413rxvt_ptytty_unix::rxvt_ptytty_unix ()
380{ 414{
381 pty = tty = -1; 415 pty = tty = -1;
382 name = 0; 416 name = 0;
417#if UTMP_SUPPORT
418 cmd_pid = 0;
419#endif
420}
421
422rxvt_ptytty_unix::~rxvt_ptytty_unix ()
423{
424#if UTMP_SUPPORT
425 logout ();
426#endif
427 put ();
428}
429
430void
431rxvt_ptytty_unix::put ()
432{
383#ifndef NO_SETOWNER_TTYDEV 433#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); 434 privileges (RESTORE);
407#endif 435#endif
408 436
409 if (pty >= 0) close (pty); 437 if (pty >= 0) close (pty);
410 close_tty (); 438 close_tty ();
411 free (name); 439 free (name);
… …
413 pty = tty = -1; 441 pty = tty = -1;
414 name = 0; 442 name = 0;
415} 443}
416 444
417bool 445bool
418rxvt_ptytty::make_controlling_tty ()
419{
420 return control_tty (tty, name) >= 0;
421}
422
423bool
424rxvt_ptytty::get () 446rxvt_ptytty_unix::get ()
425{ 447{
426 /* get master (pty) */ 448 /* get master (pty) */
427 if ((pty = get_pty (&tty, &name)) < 0) 449 if ((pty = get_pty (&tty, &name)) < 0)
428 return false; 450 return false;
429 451
… …
444 } 466 }
445 467
446 return true; 468 return true;
447} 469}
448 470
471#if PTYTTY_HELPER
472
473static int sock_fd;
474static int pid;
475
476struct command
477{
478 enum { get, login, destroy } type;
479
480 rxvt_ptytty *id;
481
482 bool login_shell;
483 int cmd_pid;
484 char hostname[512]; // arbitrary, but should be plenty
485};
486
487struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
488{
489 rxvt_ptytty *id;
490
491 ~rxvt_ptytty_proxy ();
492
493 bool get ();
494 void login (int cmd_pid, bool login_shell, const char *hostname);
495};
496
497bool
498rxvt_ptytty_proxy::get ()
499{
500 command cmd;
501
502 cmd.type = command::get;
503
504 write (sock_fd, &cmd, sizeof (cmd));
505
506 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
507 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
508
509 if (!id)
510 return false;
511
512 if ((pty = rxvt_recv_fd (sock_fd)) < 0
513 || (tty = rxvt_recv_fd (sock_fd)) < 0)
514 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
515
516 return true;
517}
518
449void 519void
450rxvt_ptytty::set_utf8_mode (bool on) 520rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
451{ 521{
452#ifdef IUTF8 522 command cmd;
453 if (pty != -1)
454 {
455 struct termios tio;
456 523
457 if (tcgetattr (pty, &tio) != -1) 524 cmd.type = command::login;
525 cmd.id = id;
526 cmd.cmd_pid = cmd_pid;
527 cmd.login_shell = login_shell;
528 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
529
530 write (sock_fd, &cmd, sizeof (cmd));
531}
532
533rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
534{
535 command cmd;
536
537 cmd.type = command::destroy;
538 cmd.id = id;
539
540 write (sock_fd, &cmd, sizeof (cmd));
541}
542
543static
544void serve ()
545{
546 command cmd;
547 vector<rxvt_ptytty *> ptys;
548
549 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
550 {
551 if (cmd.type == command::get)
552 {
553 // -> id ptyfd ttyfd
554 cmd.id = new rxvt_ptytty_unix;
555
556 if (cmd.id->get ())
458 { 557 {
459 tcflag_t new_cflag = tio.c_iflag; 558 write (sock_fd, &cmd.id, sizeof (cmd.id));
559 ptys.push_back (cmd.id);
460 560
461 if (on) 561 rxvt_send_fd (sock_fd, cmd.id->pty);
462 new_cflag |= IUTF8; 562 rxvt_send_fd (sock_fd, cmd.id->tty);
563 }
463 else 564 else
464 new_cflag &= ~IUTF8;
465
466 if (new_cflag != tio.c_iflag)
467 { 565 {
468 tio.c_iflag = new_cflag; 566 delete cmd.id;
469 tcsetattr (pty, TCSANOW, &tio); 567 cmd.id = 0;
568 write (sock_fd, &cmd.id, sizeof (cmd.id));
470 } 569 }
471 } 570 }
571 else if (cmd.type == command::login)
572 {
573#if UTMP_SUPPORT
574 if (find (ptys.begin (), ptys.end (), cmd.id))
575 {
576 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
577 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
578 }
579#endif
580 }
581 else if (cmd.type == command::destroy)
582 {
583 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
584
585 if (pty)
586 {
587 delete *pty;
588 ptys.erase (pty);
589 }
590 }
591 else
592 break;
593 }
594
595 // destroy all ptys
596 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
597 delete *i;
598}
599
600void rxvt_ptytty_server ()
601{
602 int sv[2];
603
604 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
605 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
606
607 pid = fork ();
608
609 if (pid < 0)
610 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
611
612 if (pid)
472 } 613 {
614 // client, urxvt
615 sock_fd = sv[0];
616 close (sv[1]);
617 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
618 }
619 else
620 {
621 // server, pty-helper
622 sock_fd = sv[1];
623
624 for (int fd = 0; fd < 1023; fd++)
625 if (fd != sock_fd)
626 close (fd);
627
628 serve ();
629 _exit (EXIT_SUCCESS);
630 }
631}
473#endif 632#endif
633
634// a "factory" *g*
635rxvt_ptytty *
636rxvt_new_ptytty ()
637{
638#if PTYTTY_HELPER
639 if (pid > 0)
640 // use helper process
641 return new rxvt_ptytty_proxy;
642 else
643#endif
644 return new rxvt_ptytty_unix;
474} 645}
475 646
476/*----------------------- end-of-file (C source) -----------------------*/ 647/*----------------------- end-of-file (C source) -----------------------*/
477 648

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