[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 1.53 by ayin, Sat Jan 21 18:15:26 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(HAVE_DEV_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
		51	#ifdef TTY_GID_SUPPORT
		52	#include <grp.h>
		53	#endif
61		54
62	#include <cstdio>	55	#include <cstdio>
63	#include <grp.h>	56
		57	#include "rxvtutil.h"
		58	#include "fdpass.h"
		59	#include "ptytty.h"
		60
		61	/////////////////////////////////////////////////////////////////////////////
64		62
65	/* ------------------------------------------------------------------------- *	63	/* ------------------------------------------------------------------------- *
66	* GET PSEUDO TELETYPE - MASTER AND SLAVE *	64	* GET PSEUDO TELETYPE - MASTER AND SLAVE *
67	* ------------------------------------------------------------------------- */	65	* ------------------------------------------------------------------------- */
68	/*	66	/*
69	* Returns pty file descriptor, or -1 on failure	67	* Returns pty file descriptor, or -1 on failure
70	* If successful, ttydev is set to the name of the slave device.	68	* 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	69	* fd_tty _may_ also be set to an open fd to the slave device
72	*/	70	*/
		71	#if defined(UNIX98_PTY)
73	static int	72	static int
74	get_pty (int fd_tty, char *ttydev)	73	get_pty (int fd_tty, char *ttydev)
75	{	74	{
76	int pfd;	75	int pfd;
77		76
78	#ifdef PTYS_ARE_OPENPTY	77	# if defined(HAVE_GETPT)
79	char tty_name[sizeof "/dev/pts/????\0"];	78	pfd = getpt();
		79	# elif defined(HAVE_POSIX_OPENPT)
		80	pfd = posix_openpt (O_RDWR);
		81	# else
		82	pfd = open (CLONE_DEVICE, O_RDWR \| O_NOCTTY, 0);
		83	# endif
		84	if (pfd >= 0)
		85	{
		86	if (grantpt (pfd) == 0 /* change slave permissions */
		87	&& unlockpt (pfd) == 0)
		88	{ /* slave now unlocked */
		89	ttydev = strdup (ptsname (pfd)); / get slave's name */
		90	return pfd;
		91	}
80		92
81	rxvt_privileges(RESTORE);	93	close (pfd);
		94	}
		95
		96	return -1;
		97	}
		98	#elif defined(HAVE_OPENPTY)
		99	static int
		100	get_pty (int fd_tty, char *ttydev)
		101	{
		102	int pfd;
		103	int res;
		104	char tty_name[32];
		105
82	int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);	106	res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
83	rxvt_privileges(IGNORE);
84
85	if (res != -1)	107	if (res != -1)
86	{	108	{
87	*ttydev = strdup (tty_name);	109	*ttydev = strdup (tty_name);
88	return pfd;	110	return pfd;
89	}	111	}
90	#endif
91		112
92	#ifdef PTYS_ARE__GETPTY	113	return -1;
		114	}
		115	#elif defined(HAVE__GETPTY)
		116	static int
		117	get_pty (int fd_tty, char *ttydev)
		118	{
		119	int pfd;
		120
93	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);	121	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);
94	if (*ttydev != NULL)	122	if (*ttydev != NULL)
95	return pfd;	123	return pfd;
96	#endif
97		124
98	#ifdef PTYS_ARE_GETPTY	125	return -1;
99	char *ptydev;	126	}
		127	#elif defined(HAVE_DEV_PTC)
		128	static int
		129	get_pty (int fd_tty, char *ttydev)
		130	{
		131	int pfd;
100		132
101	while ((ptydev = getpty ()) != NULL)
102	if ((pfd = open (ptydev, O_RDWR \| O_NOCTTY, 0)) >= 0)
103	{
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
134	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)	133	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)
135	{	134	{
136	*ttydev = strdup (ttyname (pfd));	135	*ttydev = strdup (ttyname (pfd));
137	return pfd;	136	return pfd;
138	}	137	}
139	#endif
140		138
141	#ifdef PTYS_ARE_CLONE	139	return -1;
		140	}
		141	#elif defined(HAVE_DEV_CLONE)
		142	static int
		143	get_pty (int fd_tty, char *ttydev)
		144	{
		145	int pfd;
		146
142	if ((pfd = open ("/dev/ptym/clone", O_RDWR \| O_NOCTTY, 0)) >= 0)	147	if ((pfd = open ("/dev/ptym/clone", O_RDWR \| O_NOCTTY, 0)) >= 0)
143	{	148	{
144	*ttydev = strdup (ptsname (pfd));	149	*ttydev = strdup (ptsname (pfd));
145	return pfd;	150	return pfd;
146	}	151	}
147	#endif
148
149	#ifdef PTYS_ARE_NUMERIC
150	{
151	int idx;
152	char c1, c2;
153	char pty_name[] = "/dev/ptyp???";
154	char tty_name[] = "/dev/ttyp???";
155
156	c1 = &(pty_name[sizeof (pty_name) - 4]);
157	c2 = &(tty_name[sizeof (tty_name) - 4]);
158	for (idx = 0; idx < 256; idx++)
159	{
160	sprintf (c1, "%d", idx);
161	sprintf (c2, "%d", idx);
162	if (access (tty_name, F_OK) < 0)
163	{
164	idx = 256;
165	break;
166	}
167
168	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
169	{
170	if (access (tty_name, R_OK \| W_OK) == 0)
171	{
172	*ttydev = strdup (tty_name);
173	return pfd;
174	}
175
176	close (pfd);
177	}
178	}
179	}
180	#endif
181
182	#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
189	# define PTYCHAR1 "pqrstuvwxyz"
190	# endif
191	# ifndef PTYCHAR2
192	# define PTYCHAR2 "0123456789abcdef"
193	# endif
194
195	for (c1 = PTYCHAR1; *c1; c1++)
196	{
197	pty_name[ (sizeof (pty_name) - 3)] =
198	tty_name[ (sizeof (pty_name) - 3)] = *c1;
199	for (c2 = PTYCHAR2; *c2; c2++)
200	{
201	pty_name[ (sizeof (pty_name) - 2)] =
202	tty_name[ (sizeof (pty_name) - 2)] = *c2;
203	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
204	{
205	if (access (tty_name, R_OK \| W_OK) == 0)
206	{
207	*ttydev = strdup (tty_name);
208	return pfd;
209	}
210
211	close (pfd);
212	}
213	}
214	}
215	}
216	#endif
217		152
218	return -1;	153	return -1;
219	}	154	}
		155	#else
		156	/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
		157	static int
		158	get_pty (int fd_tty, char *ttydev)
		159	{
		160	int pfd;
		161	int i;
		162	char pty_name[32];
		163	char tty_name[32];
		164	const char *majors = "pqrstuvwxyzabcde";
		165	const char *minors = "0123456789abcdef";
		166	for (i = 0; i < 256; i++)
		167	{
		168	snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
		169	snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
		170	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) == -1)
		171	{
		172	snprintf(pty_name, 32, "/dev/ptyp%d", i);
		173	snprintf(tty_name, 32, "/dev/ttyp%d", i);
		174	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) == -1)
		175	continue;
		176	}
		177	if (access (tty_name, R_OK \| W_OK) == 0)
		178	{
		179	*ttydev = strdup (tty_name);
		180	return pfd;
		181	}
		182
		183	close (pfd);
		184	}
		185	}
		186	#endif
220		187
221	/----------------------------------------------------------------------/	188	/----------------------------------------------------------------------/
222	/*	189	/*
223	* Returns tty file descriptor, or -1 on failure	190	* Returns tty file descriptor, or -1 on failure
224	*/	191	*/
…		…
231	/----------------------------------------------------------------------/	198	/----------------------------------------------------------------------/
232	/*	199	/*
233	* Make our tty a controlling tty so that /dev/tty points to us	200	* Make our tty a controlling tty so that /dev/tty points to us
234	*/	201	*/
235	static int	202	static int
236	control_tty (int fd_tty, const char *ttydev)	203	control_tty (int fd_tty)
237	{	204	{
238	#ifndef __QNX__
239	int fd;
240
241	/* ---------------------------------------- */
242	# ifdef HAVE_SETSID
243	setsid ();	205	setsid ();
244	# endif
245	# if defined(HAVE_SETPGID)
246	setpgid (0, 0);
247	# elif defined(HAVE_SETPGRP)
248	setpgrp (0, 0);
249	# endif
250		206
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)	207	#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
268	/*	208	/*
269	* Push STREAMS modules:	209	* Push STREAMS modules:
270	* ptem: pseudo-terminal hardware emulation module.	210	* ptem: pseudo-terminal hardware emulation module.
271	* ldterm: standard terminal line discipline.	211	* ldterm: standard terminal line discipline.
272	* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.	212	* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
…		…
289	ioctl (fd_tty, I_PUSH, "ptem");	229	ioctl (fd_tty, I_PUSH, "ptem");
290	ioctl (fd_tty, I_PUSH, "ldterm");	230	ioctl (fd_tty, I_PUSH, "ldterm");
291	ioctl (fd_tty, I_PUSH, "ttcompat");	231	ioctl (fd_tty, I_PUSH, "ttcompat");
292	}	232	}
293	#endif	233	#endif
294	/* ---------------------------------------- */	234
295	# if defined(TIOCSCTTY)
296	fd = ioctl (fd_tty, TIOCSCTTY, NULL);	235	ioctl (fd_tty, TIOCSCTTY, NULL);
297	# elif defined(TIOCSETCTTY)	236
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);	237	int fd = open ("/dev/tty", O_WRONLY);
306	if (fd < 0)	238	if (fd < 0)
307	return -1; /* fatal */	239	return -1; /* fatal */
		240
308	close (fd);	241	close (fd);
309	/* ---------------------------------------- */
310	#endif /* ! __QNX__ */
311		242
312	return 0;	243	return 0;
313	}	244	}
314		245
315	#ifndef NO_SETOWNER_TTYDEV	246	void
		247	rxvt_ptytty::close_tty ()
		248	{
		249	if (tty < 0)
		250	return;
		251
		252	close (tty);
		253	tty = -1;
		254	}
		255
		256	bool
		257	rxvt_ptytty::make_controlling_tty ()
		258	{
		259	return control_tty (tty) >= 0;
		260	}
		261
		262	void
		263	rxvt_ptytty::set_utf8_mode (bool on)
		264	{
		265	#ifdef IUTF8
		266	if (pty < 0)
		267	return;
		268
		269	struct termios tio;
		270
		271	if (tcgetattr (pty, &tio) != -1)
		272	{
		273	tcflag_t new_cflag = tio.c_iflag;
		274
		275	if (on)
		276	new_cflag \|= IUTF8;
		277	else
		278	new_cflag &= ~IUTF8;
		279
		280	if (new_cflag != tio.c_iflag)
		281	{
		282	tio.c_iflag = new_cflag;
		283	tcsetattr (pty, TCSANOW, &tio);
		284	}
		285	}
		286	#endif
		287	}
		288
316	static struct ttyconf {	289	static struct ttyconf {
317	gid_t gid;	290	gid_t gid;
318	mode_t mode;	291	mode_t mode;
319		292
320	ttyconf ()	293	ttyconf ()
…		…
329	}	302	}
330	else	303	else
331	#endif /* TTY_GID_SUPPORT */	304	#endif /* TTY_GID_SUPPORT */
332	{	305	{
333	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;	306	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;
334	gid = getgid ();	307	gid = 0;
335	}	308	}
336	}	309	}
337	} ttyconf;	310	} ttyconf;
338		311
		312	rxvt_ptytty_unix::rxvt_ptytty_unix ()
		313	{
		314	name = 0;
		315	#if UTMP_SUPPORT
		316	cmd_pid = 0;
		317	#endif
		318	}
		319
		320	rxvt_ptytty_unix::~rxvt_ptytty_unix ()
		321	{
		322	#if UTMP_SUPPORT
		323	logout ();
		324	#endif
		325	put ();
		326	}
		327
339	void	328	void
340	rxvt_ptytty::privileges (rxvt_privaction action)	329	rxvt_ptytty_unix::put ()
341	{	330	{
342	if (!name \|\| !*name)	331	chmod (name, RESTORE_TTY_MODE);
343	return;	332	chown (name, 0, ttyconf.gid);
344		333
345	rxvt_privileges (RESTORE);	334	close_tty ();
346		335
347	if (action == SAVE)	336	if (pty >= 0)
348	{	337	close (pty);
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		338
377	}	339	free (name);
378		340
379	rxvt_privileges (IGNORE);
380	}
381	#endif
382
383	rxvt_ptytty::rxvt_ptytty ()
384	{
385	pty = tty = -1;	341	pty = tty = -1;
386	name = 0;	342	name = 0;
387	#ifndef NO_SETOWNER_TTYDEV
388	saved = false;
389	#endif
390	}
391
392	rxvt_ptytty::~rxvt_ptytty ()
393	{
394	put ();
395	}
396
397	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 ()
410	{
411	#ifndef NO_SETOWNER_TTYDEV
412	privileges (RESTORE);
413	#endif
414
415	if (pty >= 0) close (pty);
416	close_tty ();
417	free (name);
418
419	pty = tty = -1;
420	name = 0;
421	}	343	}
422		344
423	bool	345	bool
424	rxvt_ptytty::make_controlling_tty ()
425	{
426	return control_tty (tty, name) >= 0;
427	}
428
429	bool
430	rxvt_ptytty::get ()	346	rxvt_ptytty_unix::get ()
431	{	347	{
432	/* get master (pty) */	348	/* get master (pty) */
433	if ((pty = get_pty (&tty, &name)) < 0)	349	if ((pty = get_pty (&tty, &name)) < 0)
434	return false;	350	return false;
435		351
…		…
437		353
438	/* get slave (tty) */	354	/* get slave (tty) */
439	if (tty < 0)	355	if (tty < 0)
440	{	356	{
441	#ifndef NO_SETOWNER_TTYDEV	357	#ifndef NO_SETOWNER_TTYDEV
442	privileges (SAVE);	358	chown (name, getuid (), ttyconf.gid); /* fail silently */
		359	chmod (name, ttyconf.mode);
		360	# ifdef HAVE_REVOKE
		361	revoke (name);
		362	# endif
443	#endif	363	#endif
444		364
445	if ((tty = get_tty (name)) < 0)	365	if ((tty = get_tty (name)) < 0)
446	{	366	{
447	put ();	367	put ();
…		…
450	}	370	}
451		371
452	return true;	372	return true;
453	}	373	}
454		374
		375	#if PTYTTY_HELPER
		376
		377	static int sock_fd;
		378	static int pid;
		379
		380	struct command
		381	{
		382	enum { get, login, destroy } type;
		383
		384	rxvt_ptytty *id;
		385
		386	bool login_shell;
		387	int cmd_pid;
		388	char hostname[512]; // arbitrary, but should be plenty
		389	};
		390
		391	struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
		392	{
		393	rxvt_ptytty *id;
		394
		395	~rxvt_ptytty_proxy ();
		396
		397	bool get ();
		398	void login (int cmd_pid, bool login_shell, const char *hostname);
		399	};
		400
		401	bool
		402	rxvt_ptytty_proxy::get ()
		403	{
		404	command cmd;
		405
		406	cmd.type = command::get;
		407
		408	write (sock_fd, &cmd, sizeof (cmd));
		409
		410	if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
		411	rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
		412
		413	if (!id)
		414	return false;
		415
		416	if ((pty = rxvt_recv_fd (sock_fd)) < 0
		417	\|\| (tty = rxvt_recv_fd (sock_fd)) < 0)
		418	rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
		419
		420	return true;
		421	}
		422
455	void	423	void
456	rxvt_ptytty::set_utf8_mode (bool on)	424	rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
457	{	425	{
458	#ifdef IUTF8	426	command cmd;
459	if (pty < 0)
460	return;
461		427
462	struct termios tio;	428	cmd.type = command::login;
		429	cmd.id = id;
		430	cmd.cmd_pid = cmd_pid;
		431	cmd.login_shell = login_shell;
		432	strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
463		433
464	if (tcgetattr (pty, &tio) != -1)	434	write (sock_fd, &cmd, sizeof (cmd));
465	{	435	}
466	tcflag_t new_cflag = tio.c_iflag;
467		436
468	if (on)	437	rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
469	new_cflag \|= IUTF8;	438	{
		439	command cmd;
		440
		441	cmd.type = command::destroy;
		442	cmd.id = id;
		443
		444	write (sock_fd, &cmd, sizeof (cmd));
		445	}
		446
		447	static
		448	void serve ()
		449	{
		450	command cmd;
		451	vector<rxvt_ptytty *> ptys;
		452
		453	while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
		454	{
		455	if (cmd.type == command::get)
		456	{
		457	// -> id ptyfd ttyfd
		458	cmd.id = new rxvt_ptytty_unix;
		459
		460	if (cmd.id->get ())
		461	{
		462	write (sock_fd, &cmd.id, sizeof (cmd.id));
		463	ptys.push_back (cmd.id);
		464
		465	rxvt_send_fd (sock_fd, cmd.id->pty);
		466	rxvt_send_fd (sock_fd, cmd.id->tty);
		467	}
		468	else
		469	{
		470	delete cmd.id;
		471	cmd.id = 0;
		472	write (sock_fd, &cmd.id, sizeof (cmd.id));
		473	}
		474	}
		475	else if (cmd.type == command::login)
		476	{
		477	#if UTMP_SUPPORT
		478	if (find (ptys.begin (), ptys.end (), cmd.id))
		479	{
		480	cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
		481	cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
		482	}
		483	#endif
		484	}
		485	else if (cmd.type == command::destroy)
		486	{
		487	rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
		488
		489	if (pty)
		490	{
		491	delete *pty;
		492	ptys.erase (pty);
		493	}
		494	}
470	else	495	else
471	new_cflag &= ~IUTF8;	496	break;
		497	}
472		498
473	if (new_cflag != tio.c_iflag)	499	// destroy all ptys
474	{	500	for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
475	tio.c_iflag = new_cflag;	501	delete *i;
476	tcsetattr (pty, TCSANOW, &tio);	502	}
477	}	503
		504	void rxvt_ptytty_server ()
		505	{
		506	int sv[2];
		507
		508	if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
		509	rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
		510
		511	pid = fork ();
		512
		513	if (pid < 0)
		514	rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
		515
		516	if (pid)
478	}	517	{
		518	// client, urxvt
		519	sock_fd = sv[0];
		520	close (sv[1]);
		521	fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
		522	}
		523	else
		524	{
		525	// server, pty-helper
		526	sock_fd = sv[1];
		527
		528	for (int fd = 0; fd < 1023; fd++)
		529	if (fd != sock_fd)
		530	close (fd);
		531
		532	serve ();
		533	_exit (EXIT_SUCCESS);
		534	}
		535	}
		536
479	#endif	537	#endif
		538
		539	// a "factory" g
		540	rxvt_ptytty *
		541	rxvt_new_ptytty ()
		542	{
		543	#if PTYTTY_HELPER
		544	if (pid > 0)
		545	// use helper process
		546	return new rxvt_ptytty_proxy;
		547	else
		548	#endif
		549	return new rxvt_ptytty_unix;
480	}	550	}
481		551
482	/----------------------- end-of-file (C source) -----------------------/	552	/----------------------- end-of-file (C source) -----------------------/
483		553

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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 1.53 by ayin, Sat Jan 21 18:15:26 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 1.53 by ayin, Sat Jan 21 18:15:26 2006 UTC