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 1.52 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 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#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
73# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
73 int pfd; 74 int pfd;
74 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{
75#ifdef PTYS_ARE_OPENPTY 103#ifdef PTYS_ARE_OPENPTY
76 char tty_name[sizeof "/dev/pts/????\0"]; 104 int pfd;
77 105 int res;
106 char tty_name[32];
107
78 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
109 if (res != -1)
79 { 110 {
80 *ttydev = strdup (tty_name); 111 *ttydev = strdup (tty_name);
81 return pfd; 112 return pfd;
82 } 113 }
83#endif 114#endif
84 115
116 return -1;
117}
118
119static inline int
120get_pty__getpty (int *fd_tty, char **ttydev)
121{
85#ifdef PTYS_ARE__GETPTY 122#ifdef PTYS_ARE__GETPTY
123 int pfd;
124
86 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
87 if (*ttydev != NULL) 126 if (*ttydev != NULL)
88 return pfd; 127 return pfd;
89#endif 128#endif
90 129
91#ifdef PTYS_ARE_GETPTY 130 return -1;
131}
92 132
93 char *ptydev; 133static inline int
94 134get_pty_ptc (int *fd_tty, char **ttydev)
95 while ((ptydev = getpty ()) != NULL) 135{
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 136#ifdef PTYS_ARE_PTC
137 int pfd;
138
128 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 140 {
130 *ttydev = strdup (ttyname (pfd)); 141 *ttydev = strdup (ttyname (pfd));
131 return pfd; 142 return pfd;
132 } 143 }
133#endif 144#endif
134 145
146 return -1;
147}
148
149static inline int
150get_pty_clone (int *fd_tty, char **ttydev)
151{
135#ifdef PTYS_ARE_CLONE 152#ifdef PTYS_ARE_CLONE
153 int pfd;
154
136 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)
137 { 156 {
138 *ttydev = strdup (ptsname (pfd)); 157 *ttydev = strdup (ptsname (pfd));
139 return pfd; 158 return pfd;
140 } 159 }
141#endif 160#endif
142 161
162 return -1;
163}
164
165static inline int
166get_pty_numeric (int *fd_tty, char **ttydev)
167{
143#ifdef PTYS_ARE_NUMERIC 168#ifdef PTYS_ARE_NUMERIC
144 { 169 int pfd;
145 int idx; 170 int idx;
146 char *c1, *c2; 171 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 172 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 173 char tty_name[] = "/dev/ttyp???";
149 174
150 c1 = &(pty_name[sizeof (pty_name) - 4]); 175 c1 = &(pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof (tty_name) - 4]); 176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
152 for (idx = 0; idx < 256; idx++) 178 for (idx = 0; idx < 256; idx++)
153 { 179 {
154 sprintf (c1, "%d", idx); 180 sprintf (c1, "%d", idx);
155 sprintf (c2, "%d", idx); 181 sprintf (c2, "%d", idx);
182
156 if (access (tty_name, F_OK) < 0) 183 if (access (tty_name, F_OK) < 0)
157 { 184 {
158 idx = 256; 185 idx = 256;
159 break; 186 break;
160 } 187 }
161 188
162 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
163 { 190 {
164 if (access (tty_name, R_OK | W_OK) == 0) 191 if (access (tty_name, R_OK | W_OK) == 0)
165 { 192 {
166 *ttydev = strdup (tty_name); 193 *ttydev = strdup (tty_name);
167 return pfd; 194 return pfd;
168 } 195 }
169 196
170 close (pfd); 197 close (pfd);
171 } 198 }
172 } 199 }
173 }
174#endif 200#endif
175 201
202 return -1;
203}
204
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
176#ifdef PTYS_ARE_SEARCHED 208#ifdef PTYS_ARE_SEARCHED
177 {
178 const char *c1, *c2;
179 char pty_name[] = "/dev/pty??";
180 char tty_name[] = "/dev/tty??";
181
182# ifndef PTYCHAR1 209# ifndef PTYCHAR1
183# define PTYCHAR1 "pqrstuvwxyz" 210# define PTYCHAR1 "pqrstuvwxyz"
184# endif 211# endif
185# ifndef PTYCHAR2 212# ifndef PTYCHAR2
186# define PTYCHAR2 "0123456789abcdef" 213# define PTYCHAR2 "0123456789abcdef"
187# endif 214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
188 219
189 for (c1 = PTYCHAR1; *c1; c1++) 220 for (c1 = PTYCHAR1; *c1; c1++)
190 { 221 {
191 pty_name[ (sizeof (pty_name) - 3)] = 222 pty_name[ (sizeof (pty_name) - 3)] =
192 tty_name[ (sizeof (pty_name) - 3)] = *c1; 223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
193 for (c2 = PTYCHAR2; *c2; c2++) 225 for (c2 = PTYCHAR2; *c2; c2++)
194 { 226 {
195 pty_name[ (sizeof (pty_name) - 2)] = 227 pty_name[ (sizeof (pty_name) - 2)] =
196 tty_name[ (sizeof (pty_name) - 2)] = *c2; 228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
197 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
198 { 231 {
199 if (access (tty_name, R_OK | W_OK) == 0) 232 if (access (tty_name, R_OK | W_OK) == 0)
200 { 233 {
201 *ttydev = strdup (tty_name); 234 *ttydev = strdup (tty_name);
202 return pfd; 235 return pfd;
203 } 236 }
204 237
205 close (pfd); 238 close (pfd);
206 } 239 }
207 } 240 }
208 } 241 }
209 }
210#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;
211 260
212 return -1; 261 return -1;
213} 262}
214 263
215/*----------------------------------------------------------------------*/ 264/*----------------------------------------------------------------------*/
… …
225/*----------------------------------------------------------------------*/ 274/*----------------------------------------------------------------------*/
226/* 275/*
227 * 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
228 */ 277 */
229static int 278static int
230control_tty (int fd_tty, const char *ttydev) 279control_tty (int fd_tty)
231{ 280{
232#ifndef __QNX__
233 int fd;
234
235 /* ---------------------------------------- */
236# ifdef HAVE_SETSID
237 setsid (); 281 setsid ();
238# endif
239# if defined(HAVE_SETPGID)
240 setpgid (0, 0);
241# elif defined(HAVE_SETPGRP)
242 setpgrp (0, 0);
243# endif
244 282
245 /* ---------------------------------------- */
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) 283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
262 /* 284 /*
263 * Push STREAMS modules: 285 * Push STREAMS modules:
264 * ptem: pseudo-terminal hardware emulation module. 286 * ptem: pseudo-terminal hardware emulation module.
265 * ldterm: standard terminal line discipline. 287 * ldterm: standard terminal line discipline.
… …
283 ioctl (fd_tty, I_PUSH, "ptem"); 305 ioctl (fd_tty, I_PUSH, "ptem");
284 ioctl (fd_tty, I_PUSH, "ldterm"); 306 ioctl (fd_tty, I_PUSH, "ldterm");
285 ioctl (fd_tty, I_PUSH, "ttcompat"); 307 ioctl (fd_tty, I_PUSH, "ttcompat");
286 } 308 }
287#endif 309#endif
288 /* ---------------------------------------- */ 310
289# if defined(TIOCSCTTY)
290 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 311 ioctl (fd_tty, TIOCSCTTY, NULL);
291# elif defined(TIOCSETCTTY) 312
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 /* ---------------------------------------- */
299 fd = open ("/dev/tty", O_WRONLY); 313 int fd = open ("/dev/tty", O_WRONLY);
300 if (fd < 0) 314 if (fd < 0)
301 return -1; /* fatal */ 315 return -1; /* fatal */
316
302 close (fd); 317 close (fd);
303 /* ---------------------------------------- */
304#endif /* ! __QNX__ */
305 318
306 return 0; 319 return 0;
307} 320}
308 321
309#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
310static struct ttyconf { 365static struct ttyconf {
311 gid_t gid; 366 gid_t gid;
312 mode_t mode; 367 mode_t mode;
313 368
314 ttyconf () 369 ttyconf ()
… …
323 } 378 }
324 else 379 else
325#endif /* TTY_GID_SUPPORT */ 380#endif /* TTY_GID_SUPPORT */
326 { 381 {
327 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 382 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
328 gid = getgid (); 383 gid = 0;
329 } 384 }
330 } 385 }
331} ttyconf; 386} ttyconf;
332 387
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
333void 404void
334rxvt_ptytty::privileges (rxvt_privaction action) 405rxvt_ptytty_unix::put ()
335{ 406{
336 rxvt_privileges (RESTORE); 407 chmod (name, RESTORE_TTY_MODE);
408 chown (name, 0, ttyconf.gid);
337 409
338 if (action == SAVE) 410 close_tty ();
339 {
340 //next_tty_action = RESTORE;
341# ifndef RESET_TTY_TO_COMMON_DEFAULTS
342 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
343 if (lstat (name, &savestat) < 0) /* you lose out */
344 ;//next_tty_action = IGNORE;
345 else
346# endif
347 411
348 { 412 if (pty >= 0)
349 chown (name, getuid (), ttyconf.gid); /* fail silently */ 413 close (pty);
350 chmod (name, ttyconf.mode);
351# ifdef HAVE_REVOKE
352 revoke (name);
353# endif
354 414
355 } 415 free (name);
356 }
357 else
358 { /* action == RESTORE */
359 //next_tty_action = IGNORE;
360# ifndef RESET_TTY_TO_COMMON_DEFAULTS
361 chmod (name, savestat.st_mode);
362 chown (name, savestat.st_uid, savestat.st_gid);
363# else
364 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
365 chown (name, 0, 0);
366# endif
367 416
368 }
369
370 rxvt_privileges (IGNORE);
371}
372#endif
373
374rxvt_ptytty::rxvt_ptytty ()
375{
376 pty = tty = -1; 417 pty = tty = -1;
377 name = 0; 418 name = 0;
378} 419}
379 420
380rxvt_ptytty::~rxvt_ptytty ()
381{
382 put ();
383}
384
385void
386
387rxvt_ptytty::close_tty ()
388{
389 if (tty >= 0) close (tty);
390 tty = -1;
391}
392
393void
394rxvt_ptytty::put ()
395{
396#ifndef NO_SETOWNER_TTYDEV
397 if (tty >= 0)
398 privileges (RESTORE);
399#endif
400
401 if (pty >= 0) close (pty);
402 close_tty ();
403 free (name);
404
405 pty = tty = -1;
406 name = 0;
407}
408
409bool 421bool
410rxvt_ptytty::make_controlling_tty ()
411{
412 return control_tty (tty, name) >= 0;
413}
414
415bool
416rxvt_ptytty::get () 422rxvt_ptytty_unix::get ()
417{ 423{
418 /* get master (pty) */ 424 /* get master (pty) */
419 if ((pty = get_pty (&tty, &name)) < 0) 425 if ((pty = get_pty (&tty, &name)) < 0)
420 return false; 426 return false;
421 427
… …
423 429
424 /* get slave (tty) */ 430 /* get slave (tty) */
425 if (tty < 0) 431 if (tty < 0)
426 { 432 {
427#ifndef NO_SETOWNER_TTYDEV 433#ifndef NO_SETOWNER_TTYDEV
428 privileges (SAVE); 434 chown (name, getuid (), ttyconf.gid); /* fail silently */
435 chmod (name, ttyconf.mode);
436# ifdef HAVE_REVOKE
437 revoke (name);
438# endif
429#endif 439#endif
430 440
431 if ((tty = get_tty (name)) < 0) 441 if ((tty = get_tty (name)) < 0)
432 { 442 {
433 put (); 443 put ();
… …
436 } 446 }
437 447
438 return true; 448 return true;
439} 449}
440 450
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
499void
500rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
501{
502 command cmd;
503
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 ())
537 {
538 write (sock_fd, &cmd.id, sizeof (cmd.id));
539 ptys.push_back (cmd.id);
540
541 rxvt_send_fd (sock_fd, cmd.id->pty);
542 rxvt_send_fd (sock_fd, cmd.id->tty);
543 }
544 else
545 {
546 delete cmd.id;
547 cmd.id = 0;
548 write (sock_fd, &cmd.id, sizeof (cmd.id));
549 }
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)
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
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;
626}
627
441/*----------------------- end-of-file (C source) -----------------------*/ 628/*----------------------- end-of-file (C source) -----------------------*/
442 629

Diff Legend

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