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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.11 by pcg, Thu Apr 8 20:31:45 2004 UTC vs.
Revision 1.23 by root, Thu Feb 17 15:07:48 2005 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#include "rxvt.h"
25 26
26/*
27 * Try to be self-contained except for the above autoconfig'd defines
28 */
29
30#if 0
31#ifdef HAVE_GETPT
32# define _GNU_SOURCE
33#endif
34#endif
35
36#include <cstdio>
37#ifdef HAVE_STDLIB_H 27#ifdef HAVE_STDLIB_H
38# include <cstdlib> 28# include <cstdlib>
39#endif 29#endif
40#ifdef HAVE_SYS_TYPES_H 30#ifdef HAVE_SYS_TYPES_H
41# include <sys/types.h> 31# include <sys/types.h>
… …
50# include <fcntl.h> 40# include <fcntl.h>
51#endif 41#endif
52#ifdef HAVE_SYS_IOCTL_H 42#ifdef HAVE_SYS_IOCTL_H
53# include <sys/ioctl.h> 43# include <sys/ioctl.h>
54#endif 44#endif
55#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 45#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
56# include <sys/stropts.h> /* for I_PUSH */ 46# include <sys/stropts.h> /* for I_PUSH */
57#endif 47#endif
58#ifdef HAVE_ISASTREAM 48#ifdef HAVE_ISASTREAM
59# include <stropts.h> 49# include <stropts.h>
60#endif 50#endif
61 51#ifdef HAVE_PTY_H
62#ifdef DEBUG_TTY 52# include <pty.h>
63# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
64#else
65# define D_TTY(x)
66#endif 53#endif
54
55// better do this via configure, but....
56#if defined(__FreeBSD__)
57# include <libutil.h>
58#elif defined(__DARWIN__) || (defined (__MACH__) && defined (__APPLE__))
59# include <util.h>
60#endif
61
62#include <cstdio>
63#include <grp.h>
67 64
68/* ------------------------------------------------------------------------- * 65/* ------------------------------------------------------------------------- *
69 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 66 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
70 * ------------------------------------------------------------------------- */ 67 * ------------------------------------------------------------------------- */
71/* 68/*
72 * Returns pty file descriptor, or -1 on failure 69 * Returns pty file descriptor, or -1 on failure
73 * If successful, ttydev is set to the name of the slave device. 70 * If successful, ttydev is set to the name of the slave device.
74 * fd_tty _may_ also be set to an open fd to the slave device 71 * fd_tty _may_ also be set to an open fd to the slave device
75 */ 72 */
76/* EXTPROTO */ 73static int
77int
78rxvt_get_pty (int *fd_tty, const char **ttydev) 74get_pty (int *fd_tty, char **ttydev)
79{ 75{
80 int pfd; 76 int pfd;
81 77
82#ifdef PTYS_ARE_OPENPTY 78#ifdef PTYS_ARE_OPENPTY
83
84 char tty_name[sizeof "/dev/pts/????\0"]; 79 char tty_name[sizeof "/dev/pts/????\0"];
85 80
86 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 81 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
87 { 82 {
88 *ttydev = strdup (tty_name); 83 *ttydev = strdup (tty_name);
… …
113 108
114 { 109 {
115# ifdef PTYS_ARE_GETPT 110# ifdef PTYS_ARE_GETPT
116 pfd = getpt (); 111 pfd = getpt ();
117# else 112# else
118
119 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 113 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
120# endif 114# endif
121 115
122 if (pfd >= 0) 116 if (pfd >= 0)
123 { 117 {
124 if (grantpt (pfd) == 0 /* change slave permissions */ 118 if (grantpt (pfd) == 0 /* change slave permissions */
125 && unlockpt (pfd) == 0) 119 && unlockpt (pfd) == 0)
126 { /* slave now unlocked */ 120 { /* slave now unlocked */
127 *ttydev = ptsname (pfd); /* get slave's name */ 121 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
128 return pfd; 122 return pfd;
129 } 123 }
130 close (pfd); 124 close (pfd);
131 } 125 }
132 } 126 }
… …
134#endif 128#endif
135 129
136#ifdef PTYS_ARE_PTC 130#ifdef PTYS_ARE_PTC
137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 131 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
138 { 132 {
139 *ttydev = ttyname (pfd); 133 *ttydev = strdup (ttyname (pfd));
140 return pfd; 134 return pfd;
141 } 135 }
142#endif 136#endif
143 137
144#ifdef PTYS_ARE_CLONE 138#ifdef PTYS_ARE_CLONE
145 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 139 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
146 { 140 {
147 *ttydev = ptsname (pfd); 141 *ttydev = strdup (ptsname (pfd));
148 return pfd; 142 return pfd;
149 } 143 }
150#endif 144#endif
151 145
152#ifdef PTYS_ARE_NUMERIC 146#ifdef PTYS_ARE_NUMERIC
153 { 147 {
154 int idx; 148 int idx;
155 char *c1, *c2; 149 char *c1, *c2;
156 char pty_name[] = "/dev/ptyp???"; 150 char pty_name[] = "/dev/ptyp???";
157 char tty_name[] = "/dev/ttyp???"; 151 char tty_name[] = "/dev/ttyp???";
158 152
159 c1 = & (pty_name[sizeof (pty_name) - 4]); 153 c1 = &(pty_name[sizeof (pty_name) - 4]);
160 c2 = & (tty_name[sizeof (tty_name) - 4]); 154 c2 = &(tty_name[sizeof (tty_name) - 4]);
161 for (idx = 0; idx < 256; idx++) 155 for (idx = 0; idx < 256; idx++)
162 { 156 {
163 sprintf (c1, "%d", idx); 157 sprintf (c1, "%d", idx);
164 sprintf (c2, "%d", idx); 158 sprintf (c2, "%d", idx);
165 if (access (tty_name, F_OK) < 0) 159 if (access (tty_name, F_OK) < 0)
166 { 160 {
167 idx = 256; 161 idx = 256;
168 break; 162 break;
169 } 163 }
164
170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 165 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
171 { 166 {
172 if (access (tty_name, R_OK | W_OK) == 0) 167 if (access (tty_name, R_OK | W_OK) == 0)
173 { 168 {
174 *ttydev = strdup (tty_name); 169 *ttydev = strdup (tty_name);
175 return pfd; 170 return pfd;
176 } 171 }
172
177 close (pfd); 173 close (pfd);
178 } 174 }
179 } 175 }
180 } 176 }
181#endif 177#endif
178
182#ifdef PTYS_ARE_SEARCHED 179#ifdef PTYS_ARE_SEARCHED
183 { 180 {
184 const char *c1, *c2; 181 const char *c1, *c2;
185 char pty_name[] = "/dev/pty??"; 182 char pty_name[] = "/dev/pty??";
186 char tty_name[] = "/dev/tty??"; 183 char tty_name[] = "/dev/tty??";
187 184
188# ifndef PTYCHAR1 185# ifndef PTYCHAR1
189# define PTYCHAR1 "pqrstuvwxyz" 186# define PTYCHAR1 "pqrstuvwxyz"
190# endif 187# endif
191# ifndef PTYCHAR2 188# ifndef PTYCHAR2
… …
205 if (access (tty_name, R_OK | W_OK) == 0) 202 if (access (tty_name, R_OK | W_OK) == 0)
206 { 203 {
207 *ttydev = strdup (tty_name); 204 *ttydev = strdup (tty_name);
208 return pfd; 205 return pfd;
209 } 206 }
207
210 close (pfd); 208 close (pfd);
211 } 209 }
212 } 210 }
213 } 211 }
214 } 212 }
215#endif 213#endif
214
216 return -1; 215 return -1;
217} 216}
218 217
219/*----------------------------------------------------------------------*/ 218/*----------------------------------------------------------------------*/
220/* 219/*
221 * Returns tty file descriptor, or -1 on failure 220 * Returns tty file descriptor, or -1 on failure
222 */ 221 */
223/* EXTPROTO */ 222static int
224int
225rxvt_get_tty (const char *ttydev) 223get_tty (char *ttydev)
226{ 224{
227 return open (ttydev, O_RDWR | O_NOCTTY, 0); 225 return open (ttydev, O_RDWR | O_NOCTTY, 0);
228} 226}
229 227
230/*----------------------------------------------------------------------*/ 228/*----------------------------------------------------------------------*/
231/* 229/*
232 * Make our tty a controlling tty so that /dev/tty points to us 230 * Make our tty a controlling tty so that /dev/tty points to us
233 */ 231 */
234/* EXTPROTO */ 232static int
235int
236rxvt_control_tty (int fd_tty, const char *ttydev) 233control_tty (int fd_tty, const char *ttydev)
237{ 234{
238#ifndef __QNX__ 235#ifndef __QNX__
239 int fd; 236 int fd;
240 237
241 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
242 /* ---------------------------------------- */ 238 /* ---------------------------------------- */
243# ifdef HAVE_SETSID 239# ifdef HAVE_SETSID
244 setsid (); 240 setsid ();
245# endif 241# endif
246# if defined(HAVE_SETPGID) 242# if defined(HAVE_SETPGID)
247 setpgid (0, 0); 243 setpgid (0, 0);
248# elif defined(HAVE_SETPGRP) 244# elif defined(HAVE_SETPGRP)
249 setpgrp (0, 0); 245 setpgrp (0, 0);
250# endif 246# endif
247
251 /* ---------------------------------------- */ 248 /* ---------------------------------------- */
252# ifdef TIOCNOTTY 249# ifdef TIOCNOTTY
253
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 250 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
255 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
256 if (fd >= 0) 251 if (fd >= 0)
257 { 252 {
258 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 253 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
259 close (fd); 254 close (fd);
260 } 255 }
261# endif 256# endif
257
262 /* ---------------------------------------- */ 258 /* ---------------------------------------- */
263 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 259 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
264 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
265 if (fd >= 0) 260 if (fd >= 0)
266 close (fd); /* ouch: still have controlling tty */ 261 close (fd); /* ouch: still have controlling tty */
262
267 /* ---------------------------------------- */ 263 /* ---------------------------------------- */
268#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 264#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
269 /* 265 /*
270 * Push STREAMS modules: 266 * Push STREAMS modules:
271 * ptem: pseudo-terminal hardware emulation module. 267 * ptem: pseudo-terminal hardware emulation module.
… …
285 */ 281 */
286# ifdef HAVE_ISASTREAM 282# ifdef HAVE_ISASTREAM
287 if (isastream (fd_tty) == 1) 283 if (isastream (fd_tty) == 1)
288# endif 284# endif
289 { 285 {
290 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
291 ioctl (fd_tty, I_PUSH, "ptem"); 286 ioctl (fd_tty, I_PUSH, "ptem");
292 ioctl (fd_tty, I_PUSH, "ldterm"); 287 ioctl (fd_tty, I_PUSH, "ldterm");
293 ioctl (fd_tty, I_PUSH, "ttcompat"); 288 ioctl (fd_tty, I_PUSH, "ttcompat");
294 } 289 }
295#endif 290#endif
296 /* ---------------------------------------- */ 291 /* ---------------------------------------- */
297# if defined(TIOCSCTTY) 292# if defined(TIOCSCTTY)
298 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 293 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
299 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
300# elif defined(TIOCSETCTTY) 294# elif defined(TIOCSETCTTY)
301 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 295 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
302 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
303# else 296# else
304 fd = open (ttydev, O_RDWR); 297 fd = open (ttydev, O_RDWR);
305 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
306 if (fd >= 0) 298 if (fd >= 0)
307 close (fd); 299 close (fd);
308# endif 300# endif
309 /* ---------------------------------------- */ 301 /* ---------------------------------------- */
310 fd = open ("/dev/tty", O_WRONLY); 302 fd = open ("/dev/tty", O_WRONLY);
311 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
312 if (fd < 0) 303 if (fd < 0)
313 return -1; /* fatal */ 304 return -1; /* fatal */
314 close (fd); 305 close (fd);
315 /* ---------------------------------------- */ 306 /* ---------------------------------------- */
316 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
317 /* ---------------------------------------- */
318#endif /* ! __QNX__ */ 307#endif /* ! __QNX__ */
319 308
320 return 0; 309 return 0;
321} 310}
311
312#ifndef NO_SETOWNER_TTYDEV
313static struct ttyconf {
314 gid_t gid;
315 mode_t mode;
316
317 ttyconf ()
318 {
319#ifdef TTY_GID_SUPPORT
320 struct group *gr = getgrnam ("tty");
321
322 if (gr)
323 { /* change group ownership of tty to "tty" */
324 mode = S_IRUSR | S_IWUSR | S_IWGRP;
325 gid = gr->gr_gid;
326 }
327 else
328#endif /* TTY_GID_SUPPORT */
329 {
330 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
331 gid = getgid ();
332 }
333 }
334} ttyconf;
335
336void
337rxvt_ptytty::privileges (rxvt_privaction action)
338{
339 if (tty < 0)
340 return;
341
342 rxvt_privileges (RESTORE);
343
344 if (action == SAVE)
345 {
346 //next_tty_action = RESTORE;
347# ifndef RESET_TTY_TO_COMMON_DEFAULTS
348 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
349 if (lstat (name, &savestat) < 0) /* you lose out */
350 ;//next_tty_action = IGNORE;
351 else
352# endif
353 {
354 chown (name, getuid (), ttyconf.gid); /* fail silently */
355 chmod (name, ttyconf.mode);
356# ifdef HAVE_REVOKE
357 revoke (name);
358# endif
359 }
360 }
361 else
362 { /* action == RESTORE */
363 //next_tty_action = IGNORE;
364# ifndef RESET_TTY_TO_COMMON_DEFAULTS
365 chmod (name, savestat.st_mode);
366 chown (name, savestat.st_uid, savestat.st_gid);
367# else
368 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
369 chown (name, 0, 0);
370# endif
371
372 }
373
374 rxvt_privileges (IGNORE);
375}
376#endif
377
378rxvt_ptytty::rxvt_ptytty ()
379{
380 pty = tty = -1;
381 name = 0;
382}
383
384rxvt_ptytty::~rxvt_ptytty ()
385{
386 put ();
387}
388
389void
390
391rxvt_ptytty::close_tty ()
392{
393 if (tty >= 0) close (tty);
394 tty = -1;
395}
396
397void
398rxvt_ptytty::put ()
399{
400#ifndef NO_SETOWNER_TTYDEV
401 if (tty >= 0)
402 privileges (RESTORE);
403#endif
404
405 if (pty >= 0) close (pty);
406 close_tty ();
407 free (name);
408
409 pty = tty = -1;
410 name = 0;
411}
412
413bool
414rxvt_ptytty::make_controlling_tty ()
415{
416 return control_tty (tty, name) >= 0;
417}
418
419bool
420rxvt_ptytty::get ()
421{
422 /* get master (pty) */
423 if ((pty = get_pty (&tty, &name)) < 0)
424 return false;
425
426 fcntl (pty, F_SETFL, O_NONBLOCK);
427
428 /* get slave (tty) */
429 if (tty < 0)
430 {
431#ifndef NO_SETOWNER_TTYDEV
432 privileges (SAVE);
433#endif
434
435 if ((tty = get_tty (name)) < 0)
436 {
437 put ();
438 return false;
439 }
440 }
441
442 return true;
443}
444
445void
446rxvt_ptytty::set_utf8_mode (bool on)
447{
448#ifdef IUTF8
449 if (pty != -1)
450 {
451 struct termios tio;
452
453 if (tcgetattr (pty, &tio) != -1)
454 {
455 tcflag_t new_cflag = tio.c_iflag;
456
457 if (on)
458 new_cflag |= IUTF8;
459 else
460 new_cflag &= ~IUTF8;
461
462 if (new_cflag != tio.c_iflag)
463 {
464 tio.c_iflag = new_cflag;
465 tcsetattr (pty, TCSANOW, &tio);
466 }
467 }
468 }
469#endif
470}
471
322/*----------------------- end-of-file (C source) -----------------------*/ 472/*----------------------- end-of-file (C source) -----------------------*/
473

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