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 1.22 by root, Tue Jan 11 04:44:57 2005 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;
129}
95 130
96 char *ptydev; 131static inline int
97 132get_pty_ptc (int *fd_tty, char **ttydev)
98 while ((ptydev = getpty ()) != NULL) 133{
99 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
100 {
101 *ttydev = ptydev;
102 return pfd;
103 }
104#endif
105
106#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
107# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
108
109 {
110# ifdef PTYS_ARE_GETPT
111 pfd = getpt ();
112# else
113 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
114# endif
115
116 if (pfd >= 0)
117 {
118 if (grantpt (pfd) == 0 /* change slave permissions */
119 && unlockpt (pfd) == 0)
120 { /* slave now unlocked */
121 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
122 return pfd;
123 }
124 close (pfd);
125 }
126 }
127# endif
128#endif
129
130#ifdef PTYS_ARE_PTC 134#ifdef PTYS_ARE_PTC
135 int pfd;
136
131 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
132 { 138 {
133 *ttydev = strdup (ttyname (pfd)); 139 *ttydev = strdup (ttyname (pfd));
134 return pfd; 140 return pfd;
135 } 141 }
136#endif 142#endif
137 143
144 return -1;
145}
146
147static inline int
148get_pty_clone (int *fd_tty, char **ttydev)
149{
138#ifdef PTYS_ARE_CLONE 150#ifdef PTYS_ARE_CLONE
151 int pfd;
152
139 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)
140 { 154 {
141 *ttydev = strdup (ptsname (pfd)); 155 *ttydev = strdup (ptsname (pfd));
142 return pfd; 156 return pfd;
143 } 157 }
144#endif 158#endif
145 159
160 return -1;
161}
162
163static inline int
164get_pty_numeric (int *fd_tty, char **ttydev)
165{
146#ifdef PTYS_ARE_NUMERIC 166#ifdef PTYS_ARE_NUMERIC
147 { 167 int pfd;
148 int idx; 168 int idx;
149 char *c1, *c2; 169 char *c1, *c2;
150 char pty_name[] = "/dev/ptyp???"; 170 char pty_name[] = "/dev/ptyp???";
151 char tty_name[] = "/dev/ttyp???"; 171 char tty_name[] = "/dev/ttyp???";
152 172
153 c1 = &(pty_name[sizeof (pty_name) - 4]); 173 c1 = &(pty_name[sizeof (pty_name) - 4]);
154 c2 = &(tty_name[sizeof (tty_name) - 4]); 174 c2 = &(tty_name[sizeof (tty_name) - 4]);
175
155 for (idx = 0; idx < 256; idx++) 176 for (idx = 0; idx < 256; idx++)
156 { 177 {
157 sprintf (c1, "%d", idx); 178 sprintf (c1, "%d", idx);
158 sprintf (c2, "%d", idx); 179 sprintf (c2, "%d", idx);
180
159 if (access (tty_name, F_OK) < 0) 181 if (access (tty_name, F_OK) < 0)
160 { 182 {
161 idx = 256; 183 idx = 256;
162 break; 184 break;
163 } 185 }
164 186
165 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 187 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
166 { 188 {
167 if (access (tty_name, R_OK | W_OK) == 0) 189 if (access (tty_name, R_OK | W_OK) == 0)
168 { 190 {
169 *ttydev = strdup (tty_name); 191 *ttydev = strdup (tty_name);
170 return pfd; 192 return pfd;
171 } 193 }
172 194
173 close (pfd); 195 close (pfd);
174 } 196 }
175 } 197 }
176 }
177#endif 198#endif
178 199
200 return -1;
201}
202
203static inline int
204get_pty_searched (int *fd_tty, char **ttydev)
205{
179#ifdef PTYS_ARE_SEARCHED 206#ifdef PTYS_ARE_SEARCHED
180 {
181 const char *c1, *c2;
182 char pty_name[] = "/dev/pty??";
183 char tty_name[] = "/dev/tty??";
184
185# ifndef PTYCHAR1 207# ifndef PTYCHAR1
186# define PTYCHAR1 "pqrstuvwxyz" 208# define PTYCHAR1 "pqrstuvwxyz"
187# endif 209# endif
188# ifndef PTYCHAR2 210# ifndef PTYCHAR2
189# define PTYCHAR2 "0123456789abcdef" 211# define PTYCHAR2 "0123456789abcdef"
190# endif 212# endif
213 int pfd;
214 const char *c1, *c2;
215 char pty_name[] = "/dev/pty??";
216 char tty_name[] = "/dev/tty??";
191 217
192 for (c1 = PTYCHAR1; *c1; c1++) 218 for (c1 = PTYCHAR1; *c1; c1++)
193 { 219 {
194 pty_name[ (sizeof (pty_name) - 3)] = 220 pty_name[ (sizeof (pty_name) - 3)] =
195 tty_name[ (sizeof (pty_name) - 3)] = *c1; 221 tty_name[ (sizeof (pty_name) - 3)] = *c1;
222
196 for (c2 = PTYCHAR2; *c2; c2++) 223 for (c2 = PTYCHAR2; *c2; c2++)
197 { 224 {
198 pty_name[ (sizeof (pty_name) - 2)] = 225 pty_name[ (sizeof (pty_name) - 2)] =
199 tty_name[ (sizeof (pty_name) - 2)] = *c2; 226 tty_name[ (sizeof (pty_name) - 2)] = *c2;
227
200 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 228 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
201 { 229 {
202 if (access (tty_name, R_OK | W_OK) == 0) 230 if (access (tty_name, R_OK | W_OK) == 0)
203 { 231 {
204 *ttydev = strdup (tty_name); 232 *ttydev = strdup (tty_name);
205 return pfd; 233 return pfd;
206 } 234 }
207 235
208 close (pfd); 236 close (pfd);
209 } 237 }
210 } 238 }
211 } 239 }
212 }
213#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;
214 258
215 return -1; 259 return -1;
216} 260}
217 261
218/*----------------------------------------------------------------------*/ 262/*----------------------------------------------------------------------*/
… …
228/*----------------------------------------------------------------------*/ 272/*----------------------------------------------------------------------*/
229/* 273/*
230 * 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
231 */ 275 */
232static int 276static int
233control_tty (int fd_tty, const char *ttydev) 277control_tty (int fd_tty)
234{ 278{
235#ifndef __QNX__
236 int fd;
237
238 /* ---------------------------------------- */
239# ifdef HAVE_SETSID
240 setsid (); 279 setsid ();
241# endif
242# if defined(HAVE_SETPGID)
243 setpgid (0, 0);
244# elif defined(HAVE_SETPGRP)
245 setpgrp (0, 0);
246# endif
247 280
248 /* ---------------------------------------- */
249# ifdef TIOCNOTTY
250 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
251 if (fd >= 0)
252 {
253 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
254 close (fd);
255 }
256# endif
257
258 /* ---------------------------------------- */
259 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
260 if (fd >= 0)
261 close (fd); /* ouch: still have controlling tty */
262
263 /* ---------------------------------------- */
264#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 281#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
265 /* 282 /*
266 * Push STREAMS modules: 283 * Push STREAMS modules:
267 * ptem: pseudo-terminal hardware emulation module. 284 * ptem: pseudo-terminal hardware emulation module.
268 * ldterm: standard terminal line discipline. 285 * ldterm: standard terminal line discipline.
… …
286 ioctl (fd_tty, I_PUSH, "ptem"); 303 ioctl (fd_tty, I_PUSH, "ptem");
287 ioctl (fd_tty, I_PUSH, "ldterm"); 304 ioctl (fd_tty, I_PUSH, "ldterm");
288 ioctl (fd_tty, I_PUSH, "ttcompat"); 305 ioctl (fd_tty, I_PUSH, "ttcompat");
289 } 306 }
290#endif 307#endif
291 /* ---------------------------------------- */ 308
292# if defined(TIOCSCTTY)
293 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 309 ioctl (fd_tty, TIOCSCTTY, NULL);
294# elif defined(TIOCSETCTTY) 310
295 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
296# else
297 fd = open (ttydev, O_RDWR);
298 if (fd >= 0)
299 close (fd);
300# endif
301 /* ---------------------------------------- */
302 fd = open ("/dev/tty", O_WRONLY); 311 int fd = open ("/dev/tty", O_WRONLY);
303 if (fd < 0) 312 if (fd < 0)
304 return -1; /* fatal */ 313 return -1; /* fatal */
314
305 close (fd); 315 close (fd);
306 /* ---------------------------------------- */
307#endif /* ! __QNX__ */
308 316
309 return 0; 317 return 0;
310} 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/////////////////////////////////////////////////////////////////////////////
311 364
312#ifndef NO_SETOWNER_TTYDEV 365#ifndef NO_SETOWNER_TTYDEV
313static struct ttyconf { 366static struct ttyconf {
314 gid_t gid; 367 gid_t gid;
315 mode_t mode; 368 mode_t mode;
… …
326 } 379 }
327 else 380 else
328#endif /* TTY_GID_SUPPORT */ 381#endif /* TTY_GID_SUPPORT */
329 { 382 {
330 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; 383 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
331 gid = getgid (); 384 gid = 0;
332 } 385 }
333 } 386 }
334} ttyconf; 387} ttyconf;
335 388
389/////////////////////////////////////////////////////////////////////////////
390
336void 391void
337rxvt_ptytty::privileges (rxvt_privaction action) 392rxvt_ptytty_unix::privileges (rxvt_privaction action)
338{ 393{
339 rxvt_privileges (RESTORE); 394 if (!name || !*name)
395 return;
340 396
341 if (action == SAVE) 397 if (action == SAVE)
342 { 398 {
343 //next_tty_action = RESTORE; 399 chown (name, getuid (), ttyconf.gid); /* fail silently */
344# ifndef RESET_TTY_TO_COMMON_DEFAULTS 400 chmod (name, ttyconf.mode);
345 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ 401# ifdef HAVE_REVOKE
346 if (lstat (name, &savestat) < 0) /* you lose out */ 402 revoke (name);
347 ;//next_tty_action = IGNORE;
348 else
349# endif 403# endif
350
351 {
352 chown (name, getuid (), ttyconf.gid); /* fail silently */
353 chmod (name, ttyconf.mode);
354# ifdef HAVE_REVOKE
355 revoke (name);
356# endif
357
358 }
359 } 404 }
360 else 405 else
361 { /* action == RESTORE */ 406 { /* action == RESTORE */
362 //next_tty_action = IGNORE; 407 chmod (name, RESTORE_TTY_MODE);
363# ifndef RESET_TTY_TO_COMMON_DEFAULTS
364 chmod (name, savestat.st_mode);
365 chown (name, savestat.st_uid, savestat.st_gid);
366# else
367 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
368 chown (name, 0, 0); 408 chown (name, 0, ttyconf.gid);
409 }
410}
369# endif 411#endif
370 412
371 }
372
373 rxvt_privileges (IGNORE);
374}
375#endif
376
377rxvt_ptytty::rxvt_ptytty () 413rxvt_ptytty_unix::rxvt_ptytty_unix ()
378{ 414{
379 pty = tty = -1; 415 pty = tty = -1;
380 name = 0; 416 name = 0;
417#if UTMP_SUPPORT
418 cmd_pid = 0;
419#endif
381} 420}
382 421
383rxvt_ptytty::~rxvt_ptytty () 422rxvt_ptytty_unix::~rxvt_ptytty_unix ()
384{ 423{
424#if UTMP_SUPPORT
425 logout ();
426#endif
385 put (); 427 put ();
386} 428}
387 429
388void 430void
389
390rxvt_ptytty::close_tty ()
391{
392 if (tty >= 0) close (tty);
393 tty = -1;
394}
395
396void
397rxvt_ptytty::put () 431rxvt_ptytty_unix::put ()
398{ 432{
399#ifndef NO_SETOWNER_TTYDEV 433#ifndef NO_SETOWNER_TTYDEV
400 if (tty >= 0)
401 privileges (RESTORE); 434 privileges (RESTORE);
402#endif 435#endif
403 436
404 if (pty >= 0) close (pty); 437 if (pty >= 0) close (pty);
405 close_tty (); 438 close_tty ();
406 free (name); 439 free (name);
… …
408 pty = tty = -1; 441 pty = tty = -1;
409 name = 0; 442 name = 0;
410} 443}
411 444
412bool 445bool
413rxvt_ptytty::make_controlling_tty ()
414{
415 return control_tty (tty, name) >= 0;
416}
417
418bool
419rxvt_ptytty::get () 446rxvt_ptytty_unix::get ()
420{ 447{
421 /* get master (pty) */ 448 /* get master (pty) */
422 if ((pty = get_pty (&tty, &name)) < 0) 449 if ((pty = get_pty (&tty, &name)) < 0)
423 return false; 450 return false;
424 451
… …
439 } 466 }
440 467
441 return true; 468 return true;
442} 469}
443 470
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
444void 519void
445rxvt_ptytty::set_utf8_mode (bool on) 520rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
446{ 521{
447#ifdef IUTF8 522 command cmd;
448 if (pty != -1)
449 {
450 struct termios tio;
451 523
452 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 ())
453 { 557 {
454 tcflag_t new_cflag = tio.c_iflag; 558 write (sock_fd, &cmd.id, sizeof (cmd.id));
559 ptys.push_back (cmd.id);
455 560
456 if (on) 561 rxvt_send_fd (sock_fd, cmd.id->pty);
457 new_cflag |= IUTF8; 562 rxvt_send_fd (sock_fd, cmd.id->tty);
563 }
458 else 564 else
459 new_cflag &= ~IUTF8;
460
461 if (new_cflag != tio.c_iflag)
462 { 565 {
463 tio.c_iflag = new_cflag; 566 delete cmd.id;
464 tcsetattr (pty, TCSANOW, &tio); 567 cmd.id = 0;
568 write (sock_fd, &cmd.id, sizeof (cmd.id));
465 } 569 }
466 } 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)
467 } 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}
468#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;
469} 645}
470 646
471/*----------------------- end-of-file (C source) -----------------------*/ 647/*----------------------- end-of-file (C source) -----------------------*/
472 648

Diff Legend

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