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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.52 by root, Thu Jan 19 20:30:36 2006 UTC vs.
Revision 1.54 by root, Sun Jan 22 00:48:13 2006 UTC

… …
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
26#include "fdpass.h"
25#include "rxvt.h" 27#include "ptytty.h"
26 28
27#include <cstdlib> 29#include <cstdlib>
28#include <cstring> 30#include <cstring>
29 31
30#include <sys/types.h> 32#include <sys/types.h>
… …
33#include <fcntl.h> 35#include <fcntl.h>
34 36
35#ifdef HAVE_SYS_IOCTL_H 37#ifdef HAVE_SYS_IOCTL_H
36# include <sys/ioctl.h> 38# include <sys/ioctl.h>
37#endif 39#endif
38#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) 40#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
39# include <sys/stropts.h> /* for I_PUSH */ 41# include <sys/stropts.h> /* for I_PUSH */
40#endif 42#endif
41#ifdef HAVE_ISASTREAM 43#ifdef HAVE_ISASTREAM
42# include <stropts.h> 44# include <stropts.h>
43#endif 45#endif
… …
46#elif defined(HAVE_LIBUTIL_H) 48#elif defined(HAVE_LIBUTIL_H)
47# include <libutil.h> 49# include <libutil.h>
48#elif defined(HAVE_UTIL_H) 50#elif defined(HAVE_UTIL_H)
49# include <util.h> 51# include <util.h>
50#endif 52#endif
53#ifdef TTY_GID_SUPPORT
54#include <grp.h>
55#endif
51 56
52#include <cstdio> 57#include <cstdio>
53#include <grp.h>
54
55#include "rxvtutil.h"
56#include "fdpass.h"
57#include "ptytty.h"
58 58
59///////////////////////////////////////////////////////////////////////////// 59/////////////////////////////////////////////////////////////////////////////
60 60
61/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
62 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
… …
64/* 64/*
65 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
66 * 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.
67 * 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
68 */ 68 */
69static inline int 69#if defined(UNIX98_PTY)
70static int
70get_pty_streams (int *fd_tty, char **ttydev) 71get_pty (int *fd_tty, char **ttydev)
71{ 72{
72#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
73# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX)
74 int pfd; 73 int pfd;
75 74
76# if defined(PTYS_ARE_GETPT) 75# if defined(HAVE_GETPT)
77 pfd = getpt(); 76 pfd = getpt();
78# elif defined(PTYS_ARE_POSIX) 77# elif defined(HAVE_POSIX_OPENPT)
79 pfd = posix_openpt (O_RDWR); 78 pfd = posix_openpt (O_RDWR);
80# else 79# else
81 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 80 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
82# endif 81# endif
83 if (pfd >= 0) 82 if (pfd >= 0)
84 { 83 {
85 if (grantpt (pfd) == 0 /* change slave permissions */ 84 if (grantpt (pfd) == 0 /* change slave permissions */
86 && unlockpt (pfd) == 0) 85 && unlockpt (pfd) == 0)
… …
89 return pfd; 88 return pfd;
90 } 89 }
91 90
92 close (pfd); 91 close (pfd);
93 } 92 }
94# endif
95#endif
96 93
97 return -1; 94 return -1;
98} 95}
99 96#elif defined(HAVE_OPENPTY)
100static inline int 97static int
101get_pty_openpty (int *fd_tty, char **ttydev) 98get_pty (int *fd_tty, char **ttydev)
102{ 99{
103#ifdef PTYS_ARE_OPENPTY
104 int pfd; 100 int pfd;
105 int res; 101 int res;
106 char tty_name[32]; 102 char tty_name[32];
107 103
108 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); 104 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
109 if (res != -1) 105 if (res != -1)
110 { 106 {
111 *ttydev = strdup (tty_name); 107 *ttydev = strdup (tty_name);
112 return pfd; 108 return pfd;
113 } 109 }
114#endif
115 110
116 return -1; 111 return -1;
117} 112}
118 113#elif defined(HAVE__GETPTY)
119static inline int 114static int
120get_pty__getpty (int *fd_tty, char **ttydev) 115get_pty (int *fd_tty, char **ttydev)
121{ 116{
122#ifdef PTYS_ARE__GETPTY
123 int pfd; 117 int pfd;
124 118
125 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 119 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
126 if (*ttydev != NULL) 120 if (*ttydev != NULL)
127 return pfd; 121 return pfd;
128#endif
129 122
130 return -1; 123 return -1;
131} 124}
132 125#elif defined(HAVE_DEV_PTC)
133static inline int 126static int
134get_pty_ptc (int *fd_tty, char **ttydev) 127get_pty (int *fd_tty, char **ttydev)
135{ 128{
136#ifdef PTYS_ARE_PTC
137 int pfd; 129 int pfd;
138 130
139 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 131 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
140 { 132 {
141 *ttydev = strdup (ttyname (pfd)); 133 *ttydev = strdup (ttyname (pfd));
142 return pfd; 134 return pfd;
143 } 135 }
144#endif
145 136
146 return -1; 137 return -1;
147} 138}
148 139#elif defined(HAVE_DEV_CLONE)
149static inline int 140static int
150get_pty_clone (int *fd_tty, char **ttydev) 141get_pty (int *fd_tty, char **ttydev)
151{ 142{
152#ifdef PTYS_ARE_CLONE
153 int pfd; 143 int pfd;
154 144
155 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 145 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
156 { 146 {
157 *ttydev = strdup (ptsname (pfd)); 147 *ttydev = strdup (ptsname (pfd));
158 return pfd; 148 return pfd;
159 } 149 }
160#endif
161 150
162 return -1; 151 return -1;
163} 152}
164 153#else
165static inline int 154/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
155static int
166get_pty_numeric (int *fd_tty, char **ttydev) 156get_pty (int *fd_tty, char **ttydev)
167{ 157{
168#ifdef PTYS_ARE_NUMERIC
169 int pfd; 158 int pfd;
170 int idx; 159 int i;
171 char *c1, *c2; 160 char pty_name[32];
172 char pty_name[] = "/dev/ptyp???"; 161 char tty_name[32];
173 char tty_name[] = "/dev/ttyp???"; 162 const char *majors = "pqrstuvwxyzabcde";
174 163 const char *minors = "0123456789abcdef";
175 c1 = &(pty_name[sizeof (pty_name) - 4]);
176 c2 = &(tty_name[sizeof (tty_name) - 4]);
177
178 for (idx = 0; idx < 256; idx++) 164 for (i = 0; i < 256; i++)
179 { 165 {
180 sprintf (c1, "%d", idx); 166 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
181 sprintf (c2, "%d", idx); 167 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
182
183 if (access (tty_name, F_OK) < 0)
184 {
185 idx = 256;
186 break;
187 }
188
189 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 168 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
169 {
170 snprintf(pty_name, 32, "/dev/ptyp%d", i);
171 snprintf(tty_name, 32, "/dev/ttyp%d", i);
172 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
173 continue;
190 { 174 }
191 if (access (tty_name, R_OK | W_OK) == 0) 175 if (access (tty_name, R_OK | W_OK) == 0)
192 { 176 {
193 *ttydev = strdup (tty_name); 177 *ttydev = strdup (tty_name);
194 return pfd; 178 return pfd;
195 } 179 }
196 180
197 close (pfd); 181 close (pfd);
198 }
199 } 182 }
200#endif
201
202 return -1;
203} 183}
204
205static inline int
206get_pty_searched (int *fd_tty, char **ttydev)
207{
208#ifdef PTYS_ARE_SEARCHED
209# ifndef PTYCHAR1
210# define PTYCHAR1 "pqrstuvwxyz"
211# endif 184#endif
212# ifndef PTYCHAR2
213# define PTYCHAR2 "0123456789abcdef"
214# endif
215 int pfd;
216 const char *c1, *c2;
217 char pty_name[] = "/dev/pty??";
218 char tty_name[] = "/dev/tty??";
219
220 for (c1 = PTYCHAR1; *c1; c1++)
221 {
222 pty_name[ (sizeof (pty_name) - 3)] =
223 tty_name[ (sizeof (pty_name) - 3)] = *c1;
224
225 for (c2 = PTYCHAR2; *c2; c2++)
226 {
227 pty_name[ (sizeof (pty_name) - 2)] =
228 tty_name[ (sizeof (pty_name) - 2)] = *c2;
229
230 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
231 {
232 if (access (tty_name, R_OK | W_OK) == 0)
233 {
234 *ttydev = strdup (tty_name);
235 return pfd;
236 }
237
238 close (pfd);
239 }
240 }
241 }
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;
260
261 return -1;
262}
263 185
264/*----------------------------------------------------------------------*/ 186/*----------------------------------------------------------------------*/
265/* 187/*
266 * Returns tty file descriptor, or -1 on failure 188 * Returns tty file descriptor, or -1 on failure
267 */ 189 */
… …
278static int 200static int
279control_tty (int fd_tty) 201control_tty (int fd_tty)
280{ 202{
281 setsid (); 203 setsid ();
282 204
283#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 205#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
284 /* 206 /*
285 * Push STREAMS modules: 207 * Push STREAMS modules:
286 * ptem: pseudo-terminal hardware emulation module. 208 * ptem: pseudo-terminal hardware emulation module.
287 * ldterm: standard terminal line discipline. 209 * ldterm: standard terminal line discipline.
288 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 210 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
318 240
319 return 0; 241 return 0;
320} 242}
321 243
322void 244void
323rxvt_ptytty::close_tty () 245ptytty::close_tty ()
324{ 246{
325 if (tty < 0) 247 if (tty < 0)
326 return; 248 return;
327 249
328 close (tty); 250 close (tty);
329 tty = -1; 251 tty = -1;
330} 252}
331 253
332bool 254bool
333rxvt_ptytty::make_controlling_tty () 255ptytty::make_controlling_tty ()
334{ 256{
335 return control_tty (tty) >= 0; 257 return control_tty (tty) >= 0;
336} 258}
337 259
338void 260void
339rxvt_ptytty::set_utf8_mode (bool on) 261ptytty::set_utf8_mode (bool on)
340{ 262{
341#ifdef IUTF8 263#ifdef IUTF8
342 if (pty < 0) 264 if (pty < 0)
343 return; 265 return;
344 266
… …
383 gid = 0; 305 gid = 0;
384 } 306 }
385 } 307 }
386} ttyconf; 308} ttyconf;
387 309
388rxvt_ptytty_unix::rxvt_ptytty_unix () 310ptytty_unix::ptytty_unix ()
389{ 311{
390 name = 0; 312 name = 0;
391#if UTMP_SUPPORT 313#if UTMP_SUPPORT
392 cmd_pid = 0; 314 cmd_pid = 0;
393#endif 315#endif
394} 316}
395 317
396rxvt_ptytty_unix::~rxvt_ptytty_unix () 318ptytty_unix::~ptytty_unix ()
397{ 319{
398#if UTMP_SUPPORT 320#if UTMP_SUPPORT
399 logout (); 321 logout ();
400#endif 322#endif
401 put (); 323 put ();
402} 324}
403 325
404void 326void
405rxvt_ptytty_unix::put () 327ptytty_unix::put ()
406{ 328{
407 chmod (name, RESTORE_TTY_MODE); 329 chmod (name, RESTORE_TTY_MODE);
408 chown (name, 0, ttyconf.gid); 330 chown (name, 0, ttyconf.gid);
409 331
410 close_tty (); 332 close_tty ();
… …
417 pty = tty = -1; 339 pty = tty = -1;
418 name = 0; 340 name = 0;
419} 341}
420 342
421bool 343bool
422rxvt_ptytty_unix::get () 344ptytty_unix::get ()
423{ 345{
424 /* get master (pty) */ 346 /* get master (pty) */
425 if ((pty = get_pty (&tty, &name)) < 0) 347 if ((pty = get_pty (&tty, &name)) < 0)
426 return false; 348 return false;
427 349
… …
455 377
456struct command 378struct command
457{ 379{
458 enum { get, login, destroy } type; 380 enum { get, login, destroy } type;
459 381
460 rxvt_ptytty *id; 382 ptytty *id;
461 383
462 bool login_shell; 384 bool login_shell;
463 int cmd_pid; 385 int cmd_pid;
464 char hostname[512]; // arbitrary, but should be plenty 386 char hostname[512]; // arbitrary, but should be plenty
465}; 387};
466 388
467struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty 389struct ptytty_proxy : ptytty
468{ 390{
469 rxvt_ptytty *id; 391 ptytty *id;
470 392
393 ptytty_proxy ()
394 : id(0)
395 {
396 }
397
471 ~rxvt_ptytty_proxy (); 398 ~ptytty_proxy ();
472 399
473 bool get (); 400 bool get ();
474 void login (int cmd_pid, bool login_shell, const char *hostname); 401 void login (int cmd_pid, bool login_shell, const char *hostname);
475}; 402};
476 403
477bool 404bool
478rxvt_ptytty_proxy::get () 405ptytty_proxy::get ()
479{ 406{
480 command cmd; 407 command cmd;
481 408
482 cmd.type = command::get; 409 cmd.type = command::get;
483 410
484 write (sock_fd, &cmd, sizeof (cmd)); 411 write (sock_fd, &cmd, sizeof (cmd));
485 412
486 if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) 413 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
487 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n"); 414 fatal ("protocol error while creating pty using helper process, aborting.\n");
488 415
489 if (!id) 416 if (!id)
490 return false; 417 return false;
491 418
492 if ((pty = rxvt_recv_fd (sock_fd)) < 0 419 if ((pty = ptytty_recv_fd (sock_fd)) < 0
493 || (tty = rxvt_recv_fd (sock_fd)) < 0) 420 || (tty = ptytty_recv_fd (sock_fd)) < 0)
494 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); 421 fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
495 422
496 return true; 423 return true;
497} 424}
498 425
499void 426void
500rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) 427ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
501{ 428{
502 command cmd; 429 command cmd;
503 430
504 cmd.type = command::login; 431 cmd.type = command::login;
505 cmd.id = id; 432 cmd.id = id;
… …
508 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); 435 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
509 436
510 write (sock_fd, &cmd, sizeof (cmd)); 437 write (sock_fd, &cmd, sizeof (cmd));
511} 438}
512 439
513rxvt_ptytty_proxy::~rxvt_ptytty_proxy () 440ptytty_proxy::~ptytty_proxy ()
514{ 441{
442 if (id)
443 {
515 command cmd; 444 command cmd;
516 445
517 cmd.type = command::destroy; 446 cmd.type = command::destroy;
518 cmd.id = id; 447 cmd.id = id;
519 448
520 write (sock_fd, &cmd, sizeof (cmd)); 449 write (sock_fd, &cmd, sizeof (cmd));
450 }
521} 451}
522 452
523static 453static
524void serve () 454void serve ()
525{ 455{
526 command cmd; 456 command cmd;
527 vector<rxvt_ptytty *> ptys; 457 vector<ptytty *> ptys;
528 458
529 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) 459 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
530 { 460 {
531 if (cmd.type == command::get) 461 if (cmd.type == command::get)
532 { 462 {
533 // -> id ptyfd ttyfd 463 // -> id ptyfd ttyfd
534 cmd.id = new rxvt_ptytty_unix; 464 cmd.id = new ptytty_unix;
535 465
536 if (cmd.id->get ()) 466 if (cmd.id->get ())
537 { 467 {
538 write (sock_fd, &cmd.id, sizeof (cmd.id)); 468 write (sock_fd, &cmd.id, sizeof (cmd.id));
539 ptys.push_back (cmd.id); 469 ptys.push_back (cmd.id);
540 470
541 rxvt_send_fd (sock_fd, cmd.id->pty); 471 ptytty_send_fd (sock_fd, cmd.id->pty);
542 rxvt_send_fd (sock_fd, cmd.id->tty); 472 ptytty_send_fd (sock_fd, cmd.id->tty);
543 } 473 }
544 else 474 else
545 { 475 {
546 delete cmd.id; 476 delete cmd.id;
547 cmd.id = 0; 477 cmd.id = 0;
… …
558 } 488 }
559#endif 489#endif
560 } 490 }
561 else if (cmd.type == command::destroy) 491 else if (cmd.type == command::destroy)
562 { 492 {
563 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); 493 ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
564 494
565 if (pty) 495 if (pty)
566 { 496 {
567 delete *pty; 497 delete *pty;
568 ptys.erase (pty); 498 ptys.erase (pty);
… …
571 else 501 else
572 break; 502 break;
573 } 503 }
574 504
575 // destroy all ptys 505 // destroy all ptys
576 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) 506 for (ptytty **i = ptys.end (); i-- > ptys.begin (); )
577 delete *i; 507 delete *i;
578} 508}
579 509
580void rxvt_ptytty_server () 510void ptytty_server ()
581{ 511{
582 int sv[2]; 512 int sv[2];
583 513
584 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) 514 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
585 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); 515 fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
586 516
587 pid = fork (); 517 pid = fork ();
588 518
589 if (pid < 0) 519 if (pid < 0)
590 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n"); 520 fatal ("could not create pty/sessiondb helper process, aborting.\n");
591 521
592 if (pid) 522 if (pid)
593 { 523 {
594 // client, urxvt 524 // client, process
595 sock_fd = sv[0]; 525 sock_fd = sv[0];
596 close (sv[1]); 526 close (sv[1]);
597 fcntl (sock_fd, F_SETFD, FD_CLOEXEC); 527 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
598 } 528 }
599 else 529 else
… …
611} 541}
612 542
613#endif 543#endif
614 544
615// a "factory" *g* 545// a "factory" *g*
616rxvt_ptytty * 546ptytty *
617rxvt_new_ptytty () 547new_ptytty ()
618{ 548{
619#if PTYTTY_HELPER 549#if PTYTTY_HELPER
620 if (pid > 0) 550 if (pid > 0)
621 // use helper process 551 // use helper process
622 return new rxvt_ptytty_proxy; 552 return new ptytty_proxy;
623 else 553 else
624#endif 554#endif
625 return new rxvt_ptytty_unix; 555 return new ptytty_unix;
626} 556}
627 557
628/*----------------------- end-of-file (C source) -----------------------*/ 558/*----------------------- end-of-file (C source) -----------------------*/
629 559

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