[ViewVC] Diff of: cvs/rxvt-unicode/src/ptytty.C

Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.29 by root, Fri Jan 6 02:11:15 2006 UTC vs.
Revision 1.49 by ayin, Thu Jan 19 16:40:42 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	*/
73	static int	69	static inline int
74	get_pty (int fd_tty, char *ttydev)	70	get_pty_streams (int fd_tty, char *ttydev)
75	{	71	{
		72	#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
		73	# if defined(PTYS_ARE_GETPT) \|\| defined(PTYS_ARE_POSIX) \|\| defined(PTYS_ARE_PTMX)
76	int pfd;	74	int pfd;
77		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
		100	static inline int
		101	get_pty_openpty (int fd_tty, char *ttydev)
		102	{
78	#ifdef PTYS_ARE_OPENPTY	103	#ifdef PTYS_ARE_OPENPTY
		104	int pfd;
		105	int res;
79	char tty_name[sizeof "/dev/pts/????\0"];	106	char tty_name[sizeof "/dev/pts/????\0"];
80		107
81	rxvt_privileges(RESTORE);
82	int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);	108	res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
83	rxvt_privileges(IGNORE);
84
85	if (res != -1)	109	if (res != -1)
86	{	110	{
87	*ttydev = strdup (tty_name);	111	*ttydev = strdup (tty_name);
88	return pfd;	112	return pfd;
89	}	113	}
90	#endif	114	#endif
91		115
		116	return -1;
		117	}
		118
		119	static inline int
		120	get_pty__getpty (int fd_tty, char *ttydev)
		121	{
92	#ifdef PTYS_ARE__GETPTY	122	#ifdef PTYS_ARE__GETPTY
		123	int pfd;
		124
93	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);	125	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);
94	if (*ttydev != NULL)	126	if (*ttydev != NULL)
95	return pfd;	127	return pfd;
96	#endif	128	#endif
97		129
98	#ifdef PTYS_ARE_GETPTY	130	return -1;
99	char *ptydev;	131	}
100		132
101	while ((ptydev = getpty ()) != NULL)	133	static inline int
102	if ((pfd = open (ptydev, O_RDWR \| O_NOCTTY, 0)) >= 0)	134	get_pty_ptc (int fd_tty, char *ttydev)
103	{	135	{
104	*ttydev = ptydev;
105	return pfd;
106	}
107	#endif
108
109	#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
110	# if defined(PTYS_ARE_GETPT) \|\| defined(PTYS_ARE_PTMX)
111
112	{
113	# ifdef PTYS_ARE_GETPT
114	pfd = getpt ();
115	# else
116	pfd = open ("/dev/ptmx", O_RDWR \| O_NOCTTY, 0);
117	# endif
118
119	if (pfd >= 0)
120	{
121	if (grantpt (pfd) == 0 /* change slave permissions */
122	&& unlockpt (pfd) == 0)
123	{ /* slave now unlocked */
124	ttydev = strdup (ptsname (pfd)); / get slave's name */
125	return pfd;
126	}
127	close (pfd);
128	}
129	}
130	# endif
131	#endif
132
133	#ifdef PTYS_ARE_PTC	136	#ifdef PTYS_ARE_PTC
		137	int pfd;
		138
134	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)	139	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)
135	{	140	{
136	*ttydev = strdup (ttyname (pfd));	141	*ttydev = strdup (ttyname (pfd));
137	return pfd;	142	return pfd;
138	}	143	}
139	#endif	144	#endif
140		145
		146	return -1;
		147	}
		148
		149	static inline int
		150	get_pty_clone (int fd_tty, char *ttydev)
		151	{
141	#ifdef PTYS_ARE_CLONE	152	#ifdef PTYS_ARE_CLONE
		153	int pfd;
		154
142	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)
143	{	156	{
144	*ttydev = strdup (ptsname (pfd));	157	*ttydev = strdup (ptsname (pfd));
145	return pfd;	158	return pfd;
146	}	159	}
147	#endif	160	#endif
148		161
		162	return -1;
		163	}
		164
		165	static inline int
		166	get_pty_numeric (int fd_tty, char *ttydev)
		167	{
149	#ifdef PTYS_ARE_NUMERIC	168	#ifdef PTYS_ARE_NUMERIC
150	{	169	int pfd;
151	int idx;	170	int idx;
152	char c1, c2;	171	char c1, c2;
153	char pty_name[] = "/dev/ptyp???";	172	char pty_name[] = "/dev/ptyp???";
154	char tty_name[] = "/dev/ttyp???";	173	char tty_name[] = "/dev/ttyp???";
155		174
156	c1 = &(pty_name[sizeof (pty_name) - 4]);	175	c1 = &(pty_name[sizeof (pty_name) - 4]);
157	c2 = &(tty_name[sizeof (tty_name) - 4]);	176	c2 = &(tty_name[sizeof (tty_name) - 4]);
		177
158	for (idx = 0; idx < 256; idx++)	178	for (idx = 0; idx < 256; idx++)
159	{	179	{
160	sprintf (c1, "%d", idx);	180	sprintf (c1, "%d", idx);
161	sprintf (c2, "%d", idx);	181	sprintf (c2, "%d", idx);
		182
162	if (access (tty_name, F_OK) < 0)	183	if (access (tty_name, F_OK) < 0)
163	{	184	{
164	idx = 256;	185	idx = 256;
165	break;	186	break;
166	}	187	}
167		188
168	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)	189	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
169	{	190	{
170	if (access (tty_name, R_OK \| W_OK) == 0)	191	if (access (tty_name, R_OK \| W_OK) == 0)
171	{	192	{
172	*ttydev = strdup (tty_name);	193	*ttydev = strdup (tty_name);
173	return pfd;	194	return pfd;
174	}	195	}
175		196
176	close (pfd);	197	close (pfd);
177	}	198	}
178	}	199	}
179	}
180	#endif	200	#endif
181		201
		202	return -1;
		203	}
		204
		205	static inline int
		206	get_pty_searched (int fd_tty, char *ttydev)
		207	{
182	#ifdef PTYS_ARE_SEARCHED	208	#ifdef PTYS_ARE_SEARCHED
183	{
184	const char c1, c2;
185	char pty_name[] = "/dev/pty??";
186	char tty_name[] = "/dev/tty??";
187
188	# ifndef PTYCHAR1	209	# ifndef PTYCHAR1
189	# define PTYCHAR1 "pqrstuvwxyz"	210	# define PTYCHAR1 "pqrstuvwxyz"
190	# endif	211	# endif
191	# ifndef PTYCHAR2	212	# ifndef PTYCHAR2
192	# define PTYCHAR2 "0123456789abcdef"	213	# define PTYCHAR2 "0123456789abcdef"
193	# endif	214	# endif
		215	int pfd;
		216	const char c1, c2;
		217	char pty_name[] = "/dev/pty??";
		218	char tty_name[] = "/dev/tty??";
194		219
195	for (c1 = PTYCHAR1; *c1; c1++)	220	for (c1 = PTYCHAR1; *c1; c1++)
196	{	221	{
197	pty_name[ (sizeof (pty_name) - 3)] =	222	pty_name[ (sizeof (pty_name) - 3)] =
198	tty_name[ (sizeof (pty_name) - 3)] = *c1;	223	tty_name[ (sizeof (pty_name) - 3)] = *c1;
		224
199	for (c2 = PTYCHAR2; *c2; c2++)	225	for (c2 = PTYCHAR2; *c2; c2++)
200	{	226	{
201	pty_name[ (sizeof (pty_name) - 2)] =	227	pty_name[ (sizeof (pty_name) - 2)] =
202	tty_name[ (sizeof (pty_name) - 2)] = *c2;	228	tty_name[ (sizeof (pty_name) - 2)] = *c2;
		229
203	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)	230	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
204	{	231	{
205	if (access (tty_name, R_OK \| W_OK) == 0)	232	if (access (tty_name, R_OK \| W_OK) == 0)
206	{	233	{
207	*ttydev = strdup (tty_name);	234	*ttydev = strdup (tty_name);
208	return pfd;	235	return pfd;
209	}	236	}
210		237
211	close (pfd);	238	close (pfd);
212	}	239	}
213	}	240	}
214	}	241	}
215	}
216	#endif	242	#endif
		243
		244	return -1;
		245	}
		246
		247	static int
		248	get_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;
217		260
218	return -1;	261	return -1;
219	}	262	}
220		263
221	/----------------------------------------------------------------------/	264	/----------------------------------------------------------------------/
…		…
231	/----------------------------------------------------------------------/	274	/----------------------------------------------------------------------/
232	/*	275	/*
233	* 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
234	*/	277	*/
235	static int	278	static int
236	control_tty (int fd_tty, const char *ttydev)	279	control_tty (int fd_tty)
237	{	280	{
238	#ifndef __QNX__
239	int fd;
240
241	/* ---------------------------------------- */
242	# ifdef HAVE_SETSID
243	setsid ();	281	setsid ();
244	# endif
245	# if defined(HAVE_SETPGID)
246	setpgid (0, 0);
247	# elif defined(HAVE_SETPGRP)
248	setpgrp (0, 0);
249	# endif
250		282
251	/* ---------------------------------------- */
252	# ifdef TIOCNOTTY
253	fd = open ("/dev/tty", O_RDWR \| O_NOCTTY);
254	if (fd >= 0)
255	{
256	ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
257	close (fd);
258	}
259	# endif
260
261	/* ---------------------------------------- */
262	fd = open ("/dev/tty", O_RDWR \| O_NOCTTY);
263	if (fd >= 0)
264	close (fd); /* ouch: still have controlling tty */
265
266	/* ---------------------------------------- */
267	#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)	283	#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
268	/*	284	/*
269	* Push STREAMS modules:	285	* Push STREAMS modules:
270	* ptem: pseudo-terminal hardware emulation module.	286	* ptem: pseudo-terminal hardware emulation module.
271	* ldterm: standard terminal line discipline.	287	* ldterm: standard terminal line discipline.
…		…
289	ioctl (fd_tty, I_PUSH, "ptem");	305	ioctl (fd_tty, I_PUSH, "ptem");
290	ioctl (fd_tty, I_PUSH, "ldterm");	306	ioctl (fd_tty, I_PUSH, "ldterm");
291	ioctl (fd_tty, I_PUSH, "ttcompat");	307	ioctl (fd_tty, I_PUSH, "ttcompat");
292	}	308	}
293	#endif	309	#endif
294	/* ---------------------------------------- */	310
295	# if defined(TIOCSCTTY)
296	fd = ioctl (fd_tty, TIOCSCTTY, NULL);	311	ioctl (fd_tty, TIOCSCTTY, NULL);
297	# elif defined(TIOCSETCTTY)	312
298	fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
299	# else
300	fd = open (ttydev, O_RDWR);
301	if (fd >= 0)
302	close (fd);
303	# endif
304	/* ---------------------------------------- */
305	fd = open ("/dev/tty", O_WRONLY);	313	int fd = open ("/dev/tty", O_WRONLY);
306	if (fd < 0)	314	if (fd < 0)
307	return -1; /* fatal */	315	return -1; /* fatal */
		316
308	close (fd);	317	close (fd);
309	/* ---------------------------------------- */
310	#endif /* ! __QNX__ */
311		318
312	return 0;	319	return 0;
313	}	320	}
314		321
315	#ifndef NO_SETOWNER_TTYDEV	322	void
		323	rxvt_ptytty::close_tty ()
		324	{
		325	if (tty < 0)
		326	return;
		327
		328	close (tty);
		329	tty = -1;
		330	}
		331
		332	bool
		333	rxvt_ptytty::make_controlling_tty ()
		334	{
		335	return control_tty (tty) >= 0;
		336	}
		337
		338	void
		339	rxvt_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
316	static struct ttyconf {	365	static struct ttyconf {
317	gid_t gid;	366	gid_t gid;
318	mode_t mode;	367	mode_t mode;
319		368
320	ttyconf ()	369	ttyconf ()
…		…
329	}	378	}
330	else	379	else
331	#endif /* TTY_GID_SUPPORT */	380	#endif /* TTY_GID_SUPPORT */
332	{	381	{
333	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;	382	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;
334	gid = getgid ();	383	gid = 0;
335	}	384	}
336	}	385	}
337	} ttyconf;	386	} ttyconf;
338		387
339	void
340	rxvt_ptytty::privileges (rxvt_privaction action)
341	{
342	if (!name \|\| !*name)
343	return;
344
345	rxvt_privileges (RESTORE);
346
347	if (action == SAVE)
348	{
349	# ifndef RESET_TTY_TO_COMMON_DEFAULTS
350	/* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
351	if (lstat (name, &savestat) < 0) /* you lose out */
352	;
353	else
354	# endif
355	{
356	saved = true;
357	chown (name, getuid (), ttyconf.gid); /* fail silently */
358	chmod (name, ttyconf.mode);
359	# ifdef HAVE_REVOKE
360	revoke (name);
361	# endif
362	}
363	}
364	else
365	{ /* action == RESTORE */
366	# ifndef RESET_TTY_TO_COMMON_DEFAULTS
367	if (saved)
368	{
369	chmod (name, savestat.st_mode);
370	chown (name, savestat.st_uid, savestat.st_gid);
371	}
372	# else
373	chmod (name, (S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IWGRP \| S_IROTH \| S_IWOTH));
374	chown (name, 0, 0);
375	# endif
376
377	}
378
379	rxvt_privileges (IGNORE);
380	}
381	#endif
382
383	rxvt_ptytty::rxvt_ptytty ()	388	rxvt_ptytty_unix::rxvt_ptytty_unix ()
384	{	389	{
385	pty = tty = -1;	390	pty = tty = -1;
386	name = 0;	391	name = 0;
387	#ifndef NO_SETOWNER_TTYDEV	392	#if UTMP_SUPPORT
388	saved = false;	393	cmd_pid = 0;
389	#endif	394	#endif
390	}	395	}
391		396
392	rxvt_ptytty::~rxvt_ptytty ()	397	rxvt_ptytty_unix::~rxvt_ptytty_unix ()
393	{	398	{
		399	#if UTMP_SUPPORT
		400	logout ();
		401	#endif
394	put ();	402	put ();
395	}	403	}
396		404
397	void	405	void
398
399	rxvt_ptytty::close_tty ()
400	{
401	if (tty < 0)
402	return;
403
404	close (tty);
405	tty = -1;
406	}
407
408	void
409	rxvt_ptytty::put ()	406	rxvt_ptytty_unix::put ()
410	{	407	{
411	#ifndef NO_SETOWNER_TTYDEV	408	chmod (name, RESTORE_TTY_MODE);
412	privileges (RESTORE);	409	chown (name, 0, ttyconf.gid);
413	#endif
414		410
415	if (pty >= 0) close (pty);	411	if (pty >= 0) close (pty);
416	close_tty ();	412	close_tty ();
417	free (name);	413	free (name);
418		414
419	pty = tty = -1;	415	pty = tty = -1;
420	name = 0;	416	name = 0;
421	}	417	}
422		418
423	bool	419	bool
424	rxvt_ptytty::make_controlling_tty ()
425	{
426	return control_tty (tty, name) >= 0;
427	}
428
429	bool
430	rxvt_ptytty::get ()	420	rxvt_ptytty_unix::get ()
431	{	421	{
432	/* get master (pty) */	422	/* get master (pty) */
433	if ((pty = get_pty (&tty, &name)) < 0)	423	if ((pty = get_pty (&tty, &name)) < 0)
434	return false;	424	return false;
435		425
…		…
437		427
438	/* get slave (tty) */	428	/* get slave (tty) */
439	if (tty < 0)	429	if (tty < 0)
440	{	430	{
441	#ifndef NO_SETOWNER_TTYDEV	431	#ifndef NO_SETOWNER_TTYDEV
442	privileges (SAVE);	432	chown (name, getuid (), ttyconf.gid); /* fail silently */
		433	chmod (name, ttyconf.mode);
		434	# ifdef HAVE_REVOKE
		435	revoke (name);
		436	# endif
443	#endif	437	#endif
444		438
445	if ((tty = get_tty (name)) < 0)	439	if ((tty = get_tty (name)) < 0)
446	{	440	{
447	put ();	441	put ();
…		…
450	}	444	}
451		445
452	return true;	446	return true;
453	}	447	}
454		448
		449	#if PTYTTY_HELPER
		450
		451	static int sock_fd;
		452	static int pid;
		453
		454	struct command
		455	{
		456	enum { get, login, destroy } type;
		457
		458	rxvt_ptytty *id;
		459
		460	bool login_shell;
		461	int cmd_pid;
		462	char hostname[512]; // arbitrary, but should be plenty
		463	};
		464
		465	struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
		466	{
		467	rxvt_ptytty *id;
		468
		469	~rxvt_ptytty_proxy ();
		470
		471	bool get ();
		472	void login (int cmd_pid, bool login_shell, const char *hostname);
		473	};
		474
		475	bool
		476	rxvt_ptytty_proxy::get ()
		477	{
		478	command cmd;
		479
		480	cmd.type = command::get;
		481
		482	write (sock_fd, &cmd, sizeof (cmd));
		483
		484	if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
		485	rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
		486
		487	if (!id)
		488	return false;
		489
		490	if ((pty = rxvt_recv_fd (sock_fd)) < 0
		491	\|\| (tty = rxvt_recv_fd (sock_fd)) < 0)
		492	rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
		493
		494	return true;
		495	}
		496
455	void	497	void
456	rxvt_ptytty::set_utf8_mode (bool on)	498	rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
457	{	499	{
458	#ifdef IUTF8	500	command cmd;
459	if (pty < 0)
460	return;
461		501
462	struct termios tio;	502	cmd.type = command::login;
		503	cmd.id = id;
		504	cmd.cmd_pid = cmd_pid;
		505	cmd.login_shell = login_shell;
		506	strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
463		507
464	if (tcgetattr (pty, &tio) != -1)	508	write (sock_fd, &cmd, sizeof (cmd));
465	{	509	}
466	tcflag_t new_cflag = tio.c_iflag;
467		510
468	if (on)	511	rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
469	new_cflag \|= IUTF8;	512	{
		513	command cmd;
		514
		515	cmd.type = command::destroy;
		516	cmd.id = id;
		517
		518	write (sock_fd, &cmd, sizeof (cmd));
		519	}
		520
		521	static
		522	void serve ()
		523	{
		524	command cmd;
		525	vector<rxvt_ptytty *> ptys;
		526
		527	while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
		528	{
		529	if (cmd.type == command::get)
		530	{
		531	// -> id ptyfd ttyfd
		532	cmd.id = new rxvt_ptytty_unix;
		533
		534	if (cmd.id->get ())
		535	{
		536	write (sock_fd, &cmd.id, sizeof (cmd.id));
		537	ptys.push_back (cmd.id);
		538
		539	rxvt_send_fd (sock_fd, cmd.id->pty);
		540	rxvt_send_fd (sock_fd, cmd.id->tty);
		541	}
		542	else
		543	{
		544	delete cmd.id;
		545	cmd.id = 0;
		546	write (sock_fd, &cmd.id, sizeof (cmd.id));
		547	}
		548	}
		549	else if (cmd.type == command::login)
		550	{
		551	#if UTMP_SUPPORT
		552	if (find (ptys.begin (), ptys.end (), cmd.id))
		553	{
		554	cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
		555	cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
		556	}
		557	#endif
		558	}
		559	else if (cmd.type == command::destroy)
		560	{
		561	rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
		562
		563	if (pty)
		564	{
		565	delete *pty;
		566	ptys.erase (pty);
		567	}
		568	}
470	else	569	else
471	new_cflag &= ~IUTF8;	570	break;
		571	}
472		572
473	if (new_cflag != tio.c_iflag)	573	// destroy all ptys
474	{	574	for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
475	tio.c_iflag = new_cflag;	575	delete *i;
476	tcsetattr (pty, TCSANOW, &tio);	576	}
477	}	577
		578	void rxvt_ptytty_server ()
		579	{
		580	int sv[2];
		581
		582	if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
		583	rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
		584
		585	pid = fork ();
		586
		587	if (pid < 0)
		588	rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
		589
		590	if (pid)
478	}	591	{
		592	// client, urxvt
		593	sock_fd = sv[0];
		594	close (sv[1]);
		595	fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
		596	}
		597	else
		598	{
		599	// server, pty-helper
		600	sock_fd = sv[1];
		601
		602	for (int fd = 0; fd < 1023; fd++)
		603	if (fd != sock_fd)
		604	close (fd);
		605
		606	serve ();
		607	_exit (EXIT_SUCCESS);
		608	}
		609	}
479	#endif	610	#endif
		611
		612	// a "factory" g
		613	rxvt_ptytty *
		614	rxvt_new_ptytty ()
		615	{
		616	#if PTYTTY_HELPER
		617	if (pid > 0)
		618	// use helper process
		619	return new rxvt_ptytty_proxy;
		620	else
		621	#endif
		622	return new rxvt_ptytty_unix;
480	}	623	}
481		624
482	/----------------------- end-of-file (C source) -----------------------/	625	/----------------------- end-of-file (C source) -----------------------/
483		626

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Comparing rxvt-unicode/src/ptytty.C (file contents): Revision 1.29 by root, Fri Jan 6 02:11:15 2006 UTC vs. Revision 1.49 by ayin, Thu Jan 19 16:40:42 2006 UTC

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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.29 by root, Fri Jan 6 02:11:15 2006 UTC vs.
Revision 1.49 by ayin, Thu Jan 19 16:40:42 2006 UTC