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

Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.16 by root, Sun Aug 15 03:30:04 2004 UTC vs.
Revision 1.48 by ayin, Thu Jan 19 10:44:44 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		44	#if defined(HAVE_PTY_H)
52	#if defined( __FreeBSD__)	45	# include <pty.h>
53	// better do this via configure, but....	46	#elif defined(HAVE_LIBUTIL_H)
54	# include <libutil.h>	47	# include <libutil.h>
		48	#elif defined(HAVE_UTIL_H)
		49	# include <util.h>
55	#endif	50	#endif
56		51
57	#include <cstdio>	52	#include <cstdio>
58	#include <grp.h>	53	#include <grp.h>
		54
		55	#include "rxvtutil.h"
		56	#include "fdpass.h"
		57	#include "ptytty.h"
		58
		59	/////////////////////////////////////////////////////////////////////////////
59		60
60	/* ------------------------------------------------------------------------- *	61	/* ------------------------------------------------------------------------- *
61	* GET PSEUDO TELETYPE - MASTER AND SLAVE *	62	* GET PSEUDO TELETYPE - MASTER AND SLAVE *
62	* ------------------------------------------------------------------------- */	63	* ------------------------------------------------------------------------- */
63	/*	64	/*
64	* Returns pty file descriptor, or -1 on failure	65	* Returns pty file descriptor, or -1 on failure
65	* 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.
66	* 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
67	*/	68	*/
68	static int	69	static inline int
69	get_pty (int fd_tty, char *ttydev)	70	get_pty_streams (int fd_tty, char *ttydev)
70	{	71	{
		72	#ifdef NO_SETOWNER_TTYDEV
71	int pfd;	73	int pfd;
72		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	{
73	#ifdef PTYS_ARE_OPENPTY	101	#ifdef PTYS_ARE_OPENPTY
		102	int pfd;
		103	int res;
74	char tty_name[sizeof "/dev/pts/????\0"];	104	char tty_name[sizeof "/dev/pts/????\0"];
75		105
76	if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)	106	res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
		107	if (res != -1)
77	{	108	{
78	*ttydev = strdup (tty_name);	109	*ttydev = strdup (tty_name);
79	return pfd;	110	return pfd;
80	}	111	}
81	#endif	112	#endif
82		113
		114	return -1;
		115	}
		116
		117	static inline int
		118	get_pty__getpty (int fd_tty, char *ttydev)
		119	{
83	#ifdef PTYS_ARE__GETPTY	120	#ifdef PTYS_ARE__GETPTY
		121	int pfd;
		122
84	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);	123	*ttydev = _getpty (&pfd, O_RDWR \| O_NONBLOCK \| O_NOCTTY, 0622, 0);
85	if (*ttydev != NULL)	124	if (*ttydev != NULL)
86	return pfd;	125	return pfd;
87	#endif	126	#endif
88		127
89	#ifdef PTYS_ARE_GETPTY	128	return -1;
		129	}
90		130
91	char *ptydev;	131	static inline int
92		132	get_pty_ptc (int fd_tty, char *ttydev)
93	while ((ptydev = getpty ()) != NULL)	133	{
94	if ((pfd = open (ptydev, O_RDWR \| O_NOCTTY, 0)) >= 0)
95	{
96	*ttydev = ptydev;
97	return pfd;
98	}
99	#endif
100
101	#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
102	# if defined(PTYS_ARE_GETPT) \|\| defined(PTYS_ARE_PTMX)
103
104	{
105	# ifdef PTYS_ARE_GETPT
106	pfd = getpt ();
107	# else
108	pfd = open ("/dev/ptmx", O_RDWR \| O_NOCTTY, 0);
109	# endif
110
111	if (pfd >= 0)
112	{
113	if (grantpt (pfd) == 0 /* change slave permissions */
114	&& unlockpt (pfd) == 0)
115	{ /* slave now unlocked */
116	ttydev = strdup (ptsname (pfd)); / get slave's name */
117	return pfd;
118	}
119	close (pfd);
120	}
121	}
122	# endif
123	#endif
124
125	#ifdef PTYS_ARE_PTC	134	#ifdef PTYS_ARE_PTC
		135	int pfd;
		136
126	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)	137	if ((pfd = open ("/dev/ptc", O_RDWR \| O_NOCTTY, 0)) >= 0)
127	{	138	{
128	*ttydev = strdup (ttyname (pfd));	139	*ttydev = strdup (ttyname (pfd));
129	return pfd;	140	return pfd;
130	}	141	}
131	#endif	142	#endif
132		143
		144	return -1;
		145	}
		146
		147	static inline int
		148	get_pty_clone (int fd_tty, char *ttydev)
		149	{
133	#ifdef PTYS_ARE_CLONE	150	#ifdef PTYS_ARE_CLONE
		151	int pfd;
		152
134	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)
135	{	154	{
136	*ttydev = strdup (ptsname (pfd));	155	*ttydev = strdup (ptsname (pfd));
137	return pfd;	156	return pfd;
138	}	157	}
139	#endif	158	#endif
140		159
		160	return -1;
		161	}
		162
		163	static inline int
		164	get_pty_numeric (int fd_tty, char *ttydev)
		165	{
141	#ifdef PTYS_ARE_NUMERIC	166	#ifdef PTYS_ARE_NUMERIC
142	{	167	int pfd;
143	int idx;	168	int idx;
144	char c1, c2;	169	char c1, c2;
145	char pty_name[] = "/dev/ptyp???";	170	char pty_name[] = "/dev/ptyp???";
146	char tty_name[] = "/dev/ttyp???";	171	char tty_name[] = "/dev/ttyp???";
147		172
148	c1 = &(pty_name[sizeof (pty_name) - 4]);	173	c1 = &(pty_name[sizeof (pty_name) - 4]);
149	c2 = &(tty_name[sizeof (tty_name) - 4]);	174	c2 = &(tty_name[sizeof (tty_name) - 4]);
		175
150	for (idx = 0; idx < 256; idx++)	176	for (idx = 0; idx < 256; idx++)
151	{	177	{
152	sprintf (c1, "%d", idx);	178	sprintf (c1, "%d", idx);
153	sprintf (c2, "%d", idx);	179	sprintf (c2, "%d", idx);
		180
154	if (access (tty_name, F_OK) < 0)	181	if (access (tty_name, F_OK) < 0)
155	{	182	{
156	idx = 256;	183	idx = 256;
157	break;	184	break;
158	}	185	}
159		186
160	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)	187	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
161	{	188	{
162	if (access (tty_name, R_OK \| W_OK) == 0)	189	if (access (tty_name, R_OK \| W_OK) == 0)
163	{	190	{
164	*ttydev = strdup (tty_name);	191	*ttydev = strdup (tty_name);
165	return pfd;	192	return pfd;
166	}	193	}
167		194
168	close (pfd);	195	close (pfd);
169	}	196	}
170	}	197	}
171	}
172	#endif	198	#endif
173		199
		200	return -1;
		201	}
		202
		203	static inline int
		204	get_pty_searched (int fd_tty, char *ttydev)
		205	{
174	#ifdef PTYS_ARE_SEARCHED	206	#ifdef PTYS_ARE_SEARCHED
175	{
176	const char c1, c2;
177	char pty_name[] = "/dev/pty??";
178	char tty_name[] = "/dev/tty??";
179
180	# ifndef PTYCHAR1	207	# ifndef PTYCHAR1
181	# define PTYCHAR1 "pqrstuvwxyz"	208	# define PTYCHAR1 "pqrstuvwxyz"
182	# endif	209	# endif
183	# ifndef PTYCHAR2	210	# ifndef PTYCHAR2
184	# define PTYCHAR2 "0123456789abcdef"	211	# define PTYCHAR2 "0123456789abcdef"
185	# endif	212	# endif
		213	int pfd;
		214	const char c1, c2;
		215	char pty_name[] = "/dev/pty??";
		216	char tty_name[] = "/dev/tty??";
186		217
187	for (c1 = PTYCHAR1; *c1; c1++)	218	for (c1 = PTYCHAR1; *c1; c1++)
188	{	219	{
189	pty_name[ (sizeof (pty_name) - 3)] =	220	pty_name[ (sizeof (pty_name) - 3)] =
190	tty_name[ (sizeof (pty_name) - 3)] = *c1;	221	tty_name[ (sizeof (pty_name) - 3)] = *c1;
		222
191	for (c2 = PTYCHAR2; *c2; c2++)	223	for (c2 = PTYCHAR2; *c2; c2++)
192	{	224	{
193	pty_name[ (sizeof (pty_name) - 2)] =	225	pty_name[ (sizeof (pty_name) - 2)] =
194	tty_name[ (sizeof (pty_name) - 2)] = *c2;	226	tty_name[ (sizeof (pty_name) - 2)] = *c2;
		227
195	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)	228	if ((pfd = open (pty_name, O_RDWR \| O_NOCTTY, 0)) >= 0)
196	{	229	{
197	if (access (tty_name, R_OK \| W_OK) == 0)	230	if (access (tty_name, R_OK \| W_OK) == 0)
198	{	231	{
199	*ttydev = strdup (tty_name);	232	*ttydev = strdup (tty_name);
200	return pfd;	233	return pfd;
201	}	234	}
202		235
203	close (pfd);	236	close (pfd);
204	}	237	}
205	}	238	}
206	}	239	}
207	}
208	#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;
209		258
210	return -1;	259	return -1;
211	}	260	}
212		261
213	/----------------------------------------------------------------------/	262	/----------------------------------------------------------------------/
…		…
223	/----------------------------------------------------------------------/	272	/----------------------------------------------------------------------/
224	/*	273	/*
225	* 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
226	*/	275	*/
227	static int	276	static int
228	control_tty (int fd_tty, const char *ttydev)	277	control_tty (int fd_tty)
229	{	278	{
230	#ifndef __QNX__
231	int fd;
232
233	/* ---------------------------------------- */
234	# ifdef HAVE_SETSID
235	setsid ();	279	setsid ();
236	# endif
237	# if defined(HAVE_SETPGID)
238	setpgid (0, 0);
239	# elif defined(HAVE_SETPGRP)
240	setpgrp (0, 0);
241	# endif
242		280
243	/* ---------------------------------------- */
244	# ifdef TIOCNOTTY
245	fd = open ("/dev/tty", O_RDWR \| O_NOCTTY);
246	if (fd >= 0)
247	{
248	ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
249	close (fd);
250	}
251	# endif
252
253	/* ---------------------------------------- */
254	fd = open ("/dev/tty", O_RDWR \| O_NOCTTY);
255	if (fd >= 0)
256	close (fd); /* ouch: still have controlling tty */
257
258	/* ---------------------------------------- */
259	#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)	281	#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260	/*	282	/*
261	* Push STREAMS modules:	283	* Push STREAMS modules:
262	* ptem: pseudo-terminal hardware emulation module.	284	* ptem: pseudo-terminal hardware emulation module.
263	* ldterm: standard terminal line discipline.	285	* ldterm: standard terminal line discipline.
…		…
281	ioctl (fd_tty, I_PUSH, "ptem");	303	ioctl (fd_tty, I_PUSH, "ptem");
282	ioctl (fd_tty, I_PUSH, "ldterm");	304	ioctl (fd_tty, I_PUSH, "ldterm");
283	ioctl (fd_tty, I_PUSH, "ttcompat");	305	ioctl (fd_tty, I_PUSH, "ttcompat");
284	}	306	}
285	#endif	307	#endif
286	/* ---------------------------------------- */	308
287	# if defined(TIOCSCTTY)
288	fd = ioctl (fd_tty, TIOCSCTTY, NULL);	309	ioctl (fd_tty, TIOCSCTTY, NULL);
289	# elif defined(TIOCSETCTTY)	310
290	fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
291	# else
292	fd = open (ttydev, O_RDWR);
293	if (fd >= 0)
294	close (fd);
295	# endif
296	/* ---------------------------------------- */
297	fd = open ("/dev/tty", O_WRONLY);	311	int fd = open ("/dev/tty", O_WRONLY);
298	if (fd < 0)	312	if (fd < 0)
299	return -1; /* fatal */	313	return -1; /* fatal */
		314
300	close (fd);	315	close (fd);
301	/* ---------------------------------------- */
302	#endif /* ! __QNX__ */
303		316
304	return 0;	317	return 0;
305	}	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	/////////////////////////////////////////////////////////////////////////////
306		364
307	#ifndef NO_SETOWNER_TTYDEV	365	#ifndef NO_SETOWNER_TTYDEV
308	static struct ttyconf {	366	static struct ttyconf {
309	gid_t gid;	367	gid_t gid;
310	mode_t mode;	368	mode_t mode;
…		…
321	}	379	}
322	else	380	else
323	#endif /* TTY_GID_SUPPORT */	381	#endif /* TTY_GID_SUPPORT */
324	{	382	{
325	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;	383	mode = S_IRUSR \| S_IWUSR \| S_IWGRP \| S_IWOTH;
326	gid = getgid ();	384	gid = 0;
327	}	385	}
328	}	386	}
329	} ttyconf;	387	} ttyconf;
330		388
		389	/////////////////////////////////////////////////////////////////////////////
		390
331	void	391	void
332	rxvt_ptytty::privileges (rxvt_privaction action)	392	rxvt_ptytty_unix::privileges (rxvt_privaction action)
333	{	393	{
334	rxvt_privileges (RESTORE);	394	if (!name \|\| !*name)
		395	return;
335		396
336	if (action == SAVE)	397	if (action == SAVE)
337	{	398	{
338	//next_tty_action = RESTORE;	399	chown (name, getuid (), ttyconf.gid); /* fail silently */
339	# ifndef RESET_TTY_TO_COMMON_DEFAULTS	400	chmod (name, ttyconf.mode);
340	/* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */	401	# ifdef HAVE_REVOKE
341	if (lstat (name, &savestat) < 0) /* you lose out */	402	revoke (name);
342	;//next_tty_action = IGNORE;
343	else
344	# endif	403	# endif
345
346	{
347	chown (name, getuid (), ttyconf.gid); /* fail silently */
348	chmod (name, ttyconf.mode);
349	# ifdef HAVE_REVOKE
350	revoke (name);
351	# endif
352
353	}
354	}	404	}
355	else	405	else
356	{ /* action == RESTORE */	406	{ /* action == RESTORE */
357	//next_tty_action = IGNORE;	407	chmod (name, RESTORE_TTY_MODE);
358	# ifndef RESET_TTY_TO_COMMON_DEFAULTS
359	chmod (name, savestat.st_mode);
360	chown (name, savestat.st_uid, savestat.st_gid);
361	# else
362	chmod (name, (S_IRUSR \| S_IWUSR \| S_IRGRP \| S_IWGRP \| S_IROTH \| S_IWOTH));
363	chown (name, 0, 0);	408	chown (name, 0, ttyconf.gid);
		409	}
		410	}
364	# endif	411	#endif
365		412
366	}
367
368	rxvt_privileges (IGNORE);
369	}
370	#endif
371
372	rxvt_ptytty::rxvt_ptytty ()	413	rxvt_ptytty_unix::rxvt_ptytty_unix ()
373	{	414	{
374	pty = tty = -1;	415	pty = tty = -1;
375	name = 0;	416	name = 0;
		417	#if UTMP_SUPPORT
		418	cmd_pid = 0;
		419	#endif
376	}	420	}
377		421
378	rxvt_ptytty::~rxvt_ptytty ()	422	rxvt_ptytty_unix::~rxvt_ptytty_unix ()
379	{	423	{
		424	#if UTMP_SUPPORT
		425	logout ();
		426	#endif
380	put ();	427	put ();
381	}	428	}
382		429
383	void	430	void
384
385	rxvt_ptytty::close_tty ()
386	{
387	if (tty >= 0) close (tty);
388	tty = -1;
389	}
390
391	void
392	rxvt_ptytty::put ()	431	rxvt_ptytty_unix::put ()
393	{	432	{
394	#ifndef NO_SETOWNER_TTYDEV	433	#ifndef NO_SETOWNER_TTYDEV
395	if (tty >= 0)
396	privileges (RESTORE);	434	privileges (RESTORE);
397	#endif	435	#endif
398		436
399	if (pty >= 0) close (pty);	437	if (pty >= 0) close (pty);
400	close_tty ();	438	close_tty ();
401	free (name);	439	free (name);
…		…
403	pty = tty = -1;	441	pty = tty = -1;
404	name = 0;	442	name = 0;
405	}	443	}
406		444
407	bool	445	bool
408	rxvt_ptytty::make_controlling_tty ()
409	{
410	return control_tty (tty, name) >= 0;
411	}
412
413	bool
414	rxvt_ptytty::get ()	446	rxvt_ptytty_unix::get ()
415	{	447	{
416	/* get master (pty) */	448	/* get master (pty) */
417	if ((pty = get_pty (&tty, &name)) < 0)	449	if ((pty = get_pty (&tty, &name)) < 0)
418	return false;	450	return false;
419		451
…		…
434	}	466	}
435		467
436	return true;	468	return true;
437	}	469	}
438		470
		471	#if PTYTTY_HELPER
		472
		473	static int sock_fd;
		474	static int pid;
		475
		476	struct command
		477	{
		478	enum { get, login, destroy } type;
		479
		480	rxvt_ptytty *id;
		481
		482	bool login_shell;
		483	int cmd_pid;
		484	char hostname[512]; // arbitrary, but should be plenty
		485	};
		486
		487	struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
		488	{
		489	rxvt_ptytty *id;
		490
		491	~rxvt_ptytty_proxy ();
		492
		493	bool get ();
		494	void login (int cmd_pid, bool login_shell, const char *hostname);
		495	};
		496
		497	bool
		498	rxvt_ptytty_proxy::get ()
		499	{
		500	command cmd;
		501
		502	cmd.type = command::get;
		503
		504	write (sock_fd, &cmd, sizeof (cmd));
		505
		506	if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
		507	rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
		508
		509	if (!id)
		510	return false;
		511
		512	if ((pty = rxvt_recv_fd (sock_fd)) < 0
		513	\|\| (tty = rxvt_recv_fd (sock_fd)) < 0)
		514	rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
		515
		516	return true;
		517	}
		518
		519	void
		520	rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
		521	{
		522	command cmd;
		523
		524	cmd.type = command::login;
		525	cmd.id = id;
		526	cmd.cmd_pid = cmd_pid;
		527	cmd.login_shell = login_shell;
		528	strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
		529
		530	write (sock_fd, &cmd, sizeof (cmd));
		531	}
		532
		533	rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
		534	{
		535	command cmd;
		536
		537	cmd.type = command::destroy;
		538	cmd.id = id;
		539
		540	write (sock_fd, &cmd, sizeof (cmd));
		541	}
		542
		543	static
		544	void serve ()
		545	{
		546	command cmd;
		547	vector<rxvt_ptytty *> ptys;
		548
		549	while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
		550	{
		551	if (cmd.type == command::get)
		552	{
		553	// -> id ptyfd ttyfd
		554	cmd.id = new rxvt_ptytty_unix;
		555
		556	if (cmd.id->get ())
		557	{
		558	write (sock_fd, &cmd.id, sizeof (cmd.id));
		559	ptys.push_back (cmd.id);
		560
		561	rxvt_send_fd (sock_fd, cmd.id->pty);
		562	rxvt_send_fd (sock_fd, cmd.id->tty);
		563	}
		564	else
		565	{
		566	delete cmd.id;
		567	cmd.id = 0;
		568	write (sock_fd, &cmd.id, sizeof (cmd.id));
		569	}
		570	}
		571	else if (cmd.type == command::login)
		572	{
		573	#if UTMP_SUPPORT
		574	if (find (ptys.begin (), ptys.end (), cmd.id))
		575	{
		576	cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
		577	cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
		578	}
		579	#endif
		580	}
		581	else if (cmd.type == command::destroy)
		582	{
		583	rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
		584
		585	if (pty)
		586	{
		587	delete *pty;
		588	ptys.erase (pty);
		589	}
		590	}
		591	else
		592	break;
		593	}
		594
		595	// destroy all ptys
		596	for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
		597	delete *i;
		598	}
		599
		600	void rxvt_ptytty_server ()
		601	{
		602	int sv[2];
		603
		604	if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
		605	rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
		606
		607	pid = fork ();
		608
		609	if (pid < 0)
		610	rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
		611
		612	if (pid)
		613	{
		614	// client, urxvt
		615	sock_fd = sv[0];
		616	close (sv[1]);
		617	fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
		618	}
		619	else
		620	{
		621	// server, pty-helper
		622	sock_fd = sv[1];
		623
		624	for (int fd = 0; fd < 1023; fd++)
		625	if (fd != sock_fd)
		626	close (fd);
		627
		628	serve ();
		629	_exit (EXIT_SUCCESS);
		630	}
		631	}
		632	#endif
		633
		634	// a "factory" g
		635	rxvt_ptytty *
		636	rxvt_new_ptytty ()
		637	{
		638	#if PTYTTY_HELPER
		639	if (pid > 0)
		640	// use helper process
		641	return new rxvt_ptytty_proxy;
		642	else
		643	#endif
		644	return new rxvt_ptytty_unix;
		645	}
		646
439	/----------------------- end-of-file (C source) -----------------------/	647	/----------------------- end-of-file (C source) -----------------------/
440		648

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Comparing rxvt-unicode/src/ptytty.C (file contents): Revision 1.16 by root, Sun Aug 15 03:30:04 2004 UTC vs. Revision 1.48 by ayin, Thu Jan 19 10:44:44 2006 UTC

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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.16 by root, Sun Aug 15 03:30:04 2004 UTC vs.
Revision 1.48 by ayin, Thu Jan 19 10:44:44 2006 UTC