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

Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.23 by root, Thu Feb 17 15:07:48 2005 UTC vs.
Revision 1.45 by root, Tue Jan 17 18:06:14 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	#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
		98	static inline int
		99	get_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
		117	static inline int
		118	get_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;	131	static inline int
97		132	get_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
		147	static inline int
		148	get_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
		163	static inline int
		164	get_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
		203	static inline int
		204	get_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
		245	static int
		246	get_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	*/
232	static int	276	static int
233	control_tty (int fd_tty, const char *ttydev)	277	control_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.
269	* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.	286	* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
…		…
277	* documentation is really unclear about whether it is any close () on	294	* documentation is really unclear about whether it is any close () on
278	* the master side or the last close () - i.e. a proper STREAMS dismantling	295	* the master side or the last close () - i.e. a proper STREAMS dismantling
279	* close () - on the master side which causes a hang up to be sent	296	* close () - on the master side which causes a hang up to be sent
280	* through - Geoff Wing	297	* through - Geoff Wing
281	*/	298	*/
282	# ifdef HAVE_ISASTREAM	299	# ifdef HAVE_ISASTREAM
283	if (isastream (fd_tty) == 1)	300	if (isastream (fd_tty) == 1)
284	# endif	301	# endif
285	{	302	{
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
291	/* ---------------------------------------- */
292	# if defined(TIOCSCTTY)
293	fd = ioctl (fd_tty, TIOCSCTTY, NULL);
294	# elif defined(TIOCSETCTTY)
295	fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
296	# else
297	fd = open (ttydev, O_RDWR);
298	if (fd >= 0)
299	close (fd);
300	# endif	307	# endif
301	/* ---------------------------------------- */	308
		309	ioctl (fd_tty, TIOCSCTTY, NULL);
		310
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
		320	void
		321	rxvt_ptytty::close_tty ()
		322	{
		323	if (tty < 0)
		324	return;
		325
		326	close (tty);
		327	tty = -1;
		328	}
		329
		330	bool
		331	rxvt_ptytty::make_controlling_tty ()
		332	{
		333	return control_tty (tty) >= 0;
		334	}
		335
		336	void
		337	rxvt_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
313	static struct ttyconf {	366	static struct ttyconf {
314	gid_t gid;	367	gid_t gid;
315	mode_t mode;	368	mode_t mode;
…		…
331	gid = getgid ();	384	gid = getgid ();
332	}	385	}
333	}	386	}
334	} ttyconf;	387	} ttyconf;
335		388
		389	/////////////////////////////////////////////////////////////////////////////
		390
336	void	391	void
337	rxvt_ptytty::privileges (rxvt_privaction action)	392	rxvt_ptytty_unix::privileges (rxvt_privaction action)
338	{	393	{
339	if (tty < 0)	394	if (!name \|\| !*name)
340	return;	395	return;
341		396
342	rxvt_privileges (RESTORE);
343
344	if (action == SAVE)	397	if (action == SAVE)
345	{	398	{
346	//next_tty_action = RESTORE;
347	# ifndef RESET_TTY_TO_COMMON_DEFAULTS	399	# ifndef RESET_TTY_TO_COMMON_DEFAULTS
348	/* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */	400	/* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
349	if (lstat (name, &savestat) < 0) /* you lose out */	401	if (lstat (name, &savestat) < 0) /* you lose out */
350	;//next_tty_action = IGNORE;	402	;
351	else	403	else
352	# endif	404	# endif
353	{	405	{
		406	saved = true;
354	chown (name, getuid (), ttyconf.gid); /* fail silently */	407	chown (name, getuid (), ttyconf.gid); /* fail silently */
355	chmod (name, ttyconf.mode);	408	chmod (name, ttyconf.mode);
356	# ifdef HAVE_REVOKE	409	# ifdef HAVE_REVOKE
357	revoke (name);	410	revoke (name);
358	# endif	411	# endif
359	}	412	}
360	}	413	}
361	else	414	else
362	{ /* action == RESTORE */	415	{ /* action == RESTORE */
363	//next_tty_action = IGNORE;
364	# ifndef RESET_TTY_TO_COMMON_DEFAULTS	416	# ifndef RESET_TTY_TO_COMMON_DEFAULTS
		417	if (saved)
		418	{
365	chmod (name, savestat.st_mode);	419	chmod (name, savestat.st_mode);
366	chown (name, savestat.st_uid, savestat.st_gid);	420	chown (name, savestat.st_uid, savestat.st_gid);
		421	}
367	# else	422	# else
368	chmod (name, (S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IWGRP \| S_IROTH \| S_IWOTH));	423	chmod (name, (S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IWGRP \| S_IROTH \| S_IWOTH));
369	chown (name, 0, 0);	424	chown (name, 0, 0);
370	# endif	425	# endif
371
372	}	426	}
373
374	rxvt_privileges (IGNORE);
375	}	427	}
376	#endif	428	#endif
377		429
378	rxvt_ptytty::rxvt_ptytty ()	430	rxvt_ptytty_unix::rxvt_ptytty_unix ()
379	{	431	{
380	pty = tty = -1;	432	pty = tty = -1;
381	name = 0;	433	name = 0;
		434	#ifndef NO_SETOWNER_TTYDEV
		435	saved = false;
		436	#endif
		437	#if UTMP_SUPPORT
		438	cmd_pid = 0;
		439	#endif
382	}	440	}
383		441
384	rxvt_ptytty::~rxvt_ptytty ()	442	rxvt_ptytty_unix::~rxvt_ptytty_unix ()
385	{	443	{
		444	#if UTMP_SUPPORT
		445	logout ();
		446	#endif
386	put ();	447	put ();
387	}	448	}
388		449
389	void	450	void
390
391	rxvt_ptytty::close_tty ()
392	{
393	if (tty >= 0) close (tty);
394	tty = -1;
395	}
396
397	void
398	rxvt_ptytty::put ()	451	rxvt_ptytty_unix::put ()
399	{	452	{
400	#ifndef NO_SETOWNER_TTYDEV	453	#ifndef NO_SETOWNER_TTYDEV
401	if (tty >= 0)
402	privileges (RESTORE);	454	privileges (RESTORE);
403	#endif	455	#endif
404		456
405	if (pty >= 0) close (pty);	457	if (pty >= 0) close (pty);
406	close_tty ();	458	close_tty ();
407	free (name);	459	free (name);
…		…
409	pty = tty = -1;	461	pty = tty = -1;
410	name = 0;	462	name = 0;
411	}	463	}
412		464
413	bool	465	bool
414	rxvt_ptytty::make_controlling_tty ()
415	{
416	return control_tty (tty, name) >= 0;
417	}
418
419	bool
420	rxvt_ptytty::get ()	466	rxvt_ptytty_unix::get ()
421	{	467	{
422	/* get master (pty) */	468	/* get master (pty) */
423	if ((pty = get_pty (&tty, &name)) < 0)	469	if ((pty = get_pty (&tty, &name)) < 0)
424	return false;	470	return false;
425		471
…		…
440	}	486	}
441		487
442	return true;	488	return true;
443	}	489	}
444		490
		491	#if PTYTTY_HELPER
		492
		493	static int sock_fd;
		494	static int pid;
		495
		496	struct command
		497	{
		498	enum { get, login, destroy } type;
		499
		500	rxvt_ptytty *id;
		501
		502	bool login_shell;
		503	int cmd_pid;
		504	char hostname[512]; // arbitrary, but should be plenty
		505	};
		506
		507	struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
		508	{
		509	rxvt_ptytty *id;
		510
		511	~rxvt_ptytty_proxy ();
		512
		513	bool get ();
		514	void login (int cmd_pid, bool login_shell, const char *hostname);
		515	};
		516
		517	bool
		518	rxvt_ptytty_proxy::get ()
		519	{
		520	command cmd;
		521
		522	cmd.type = command::get;
		523
		524	write (sock_fd, &cmd, sizeof (cmd));
		525
		526	if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
		527	rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
		528
		529	if (!id)
		530	return false;
		531
		532	if ((pty = rxvt_recv_fd (sock_fd)) < 0
		533	\|\| (tty = rxvt_recv_fd (sock_fd)) < 0)
		534	rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
		535
		536	return true;
		537	}
		538
445	void	539	void
446	rxvt_ptytty::set_utf8_mode (bool on)	540	rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
447	{	541	{
448	#ifdef IUTF8	542	command cmd;
449	if (pty != -1)
450	{
451	struct termios tio;
452		543
453	if (tcgetattr (pty, &tio) != -1)	544	cmd.type = command::login;
		545	cmd.id = id;
		546	cmd.cmd_pid = cmd_pid;
		547	cmd.login_shell = login_shell;
		548	strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
		549
		550	write (sock_fd, &cmd, sizeof (cmd));
		551	}
		552
		553	rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
		554	{
		555	command cmd;
		556
		557	cmd.type = command::destroy;
		558	cmd.id = id;
		559
		560	write (sock_fd, &cmd, sizeof (cmd));
		561	}
		562
		563	static
		564	void serve ()
		565	{
		566	command cmd;
		567	vector<rxvt_ptytty *> ptys;
		568
		569	while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
		570	{
		571	if (cmd.type == command::get)
		572	{
		573	// -> id ptyfd ttyfd
		574	cmd.id = new rxvt_ptytty_unix;
		575
		576	if (cmd.id->get ())
454	{	577	{
455	tcflag_t new_cflag = tio.c_iflag;	578	write (sock_fd, &cmd.id, sizeof (cmd.id));
		579	ptys.push_back (cmd.id);
456		580
457	if (on)	581	rxvt_send_fd (sock_fd, cmd.id->pty);
458	new_cflag \|= IUTF8;	582	rxvt_send_fd (sock_fd, cmd.id->tty);
		583	}
459	else	584	else
460	new_cflag &= ~IUTF8;
461
462	if (new_cflag != tio.c_iflag)
463	{	585	{
464	tio.c_iflag = new_cflag;	586	delete cmd.id;
465	tcsetattr (pty, TCSANOW, &tio);	587	cmd.id = 0;
		588	write (sock_fd, &cmd.id, sizeof (cmd.id));
466	}	589	}
467	}	590	}
		591	else if (cmd.type == command::login)
		592	{
		593	#if UTMP_SUPPORT
		594	if (find (ptys.begin (), ptys.end (), cmd.id))
		595	{
		596	cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
		597	cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
		598	}
		599	#endif
		600	}
		601	else if (cmd.type == command::destroy)
		602	{
		603	rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
		604
		605	if (pty)
		606	{
		607	delete *pty;
		608	ptys.erase (pty);
		609	}
		610	}
		611	else
		612	break;
		613	}
		614
		615	// destroy all ptys
		616	for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
		617	delete *i;
		618	}
		619
		620	void rxvt_ptytty_server ()
		621	{
		622	int sv[2];
		623
		624	if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
		625	rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
		626
		627	pid = fork ();
		628
		629	if (pid < 0)
		630	rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
		631
		632	if (pid)
468	}	633	{
		634	// client, urxvt
		635	sock_fd = sv[0];
		636	close (sv[1]);
		637	fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
		638	}
		639	else
		640	{
		641	setgid (getegid ());
		642	setuid (geteuid ());
		643
		644	// server, pty-helper
		645	sock_fd = sv[1];
		646
		647	for (int fd = 0; fd < 1023; fd++)
		648	if (fd != sock_fd && fd != 1)
		649	close (fd);
		650
		651	serve ();
		652	_exit (EXIT_SUCCESS);
		653	}
		654	}
469	#endif	655	#endif
		656
		657	// a "factory" g
		658	rxvt_ptytty *
		659	rxvt_new_ptytty ()
		660	{
		661	#if PTYTTY_HELPER
		662	if (pid > 0)
		663	// use helper process
		664	return new rxvt_ptytty_proxy;
		665	else
		666	#endif
		667	return new rxvt_ptytty_unix;
470	}	668	}
471		669
472	/----------------------- end-of-file (C source) -----------------------/	670	/----------------------- end-of-file (C source) -----------------------/
473		671

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Comparing rxvt-unicode/src/ptytty.C (file contents): Revision 1.23 by root, Thu Feb 17 15:07:48 2005 UTC vs. Revision 1.45 by root, Tue Jan 17 18:06:14 2006 UTC

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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.23 by root, Thu Feb 17 15:07:48 2005 UTC vs.
Revision 1.45 by root, Tue Jan 17 18:06:14 2006 UTC