1 |
pcg |
1.1 |
/*--------------------------------*-C-*---------------------------------* |
2 |
pcg |
1.11 |
* File: ptytty.C |
3 |
pcg |
1.1 |
*----------------------------------------------------------------------* |
4 |
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* |
5 |
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* All portions of code are copyright by their respective author/s. |
6 |
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* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
7 |
root |
1.30 |
* Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
8 |
pcg |
1.1 |
* |
9 |
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* This program is free software; you can redistribute it and/or modify |
10 |
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* it under the terms of the GNU General Public License as published by |
11 |
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* the Free Software Foundation; either version 2 of the License, or |
12 |
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* (at your option) any later version. |
13 |
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* |
14 |
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* This program is distributed in the hope that it will be useful, |
15 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 |
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* GNU General Public License for more details. |
18 |
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* |
19 |
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* You should have received a copy of the GNU General Public License |
20 |
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* along with this program; if not, write to the Free Software |
21 |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 |
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*---------------------------------------------------------------------*/ |
23 |
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24 |
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#include "../config.h" /* NECESSARY */ |
25 |
root |
1.16 |
#include "rxvt.h" |
26 |
pcg |
1.1 |
|
27 |
root |
1.40 |
#include <cstdlib> |
28 |
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#include <cstring> |
29 |
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30 |
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#include <sys/types.h> |
31 |
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#include <sys/socket.h> |
32 |
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#include <unistd.h> |
33 |
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#include <fcntl.h> |
34 |
root |
1.31 |
|
35 |
pcg |
1.1 |
#ifdef HAVE_SYS_IOCTL_H |
36 |
|
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# include <sys/ioctl.h> |
37 |
|
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#endif |
38 |
root |
1.12 |
#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
39 |
pcg |
1.1 |
# include <sys/stropts.h> /* for I_PUSH */ |
40 |
|
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#endif |
41 |
pcg |
1.10 |
#ifdef HAVE_ISASTREAM |
42 |
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# include <stropts.h> |
43 |
|
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#endif |
44 |
root |
1.31 |
#if defined(HAVE_PTY_H) |
45 |
root |
1.22 |
# include <pty.h> |
46 |
root |
1.31 |
#elif defined(HAVE_LIBUTIL_H) |
47 |
root |
1.16 |
# include <libutil.h> |
48 |
root |
1.31 |
#elif defined(HAVE_UTIL_H) |
49 |
root |
1.17 |
# include <util.h> |
50 |
pcg |
1.1 |
#endif |
51 |
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|
52 |
root |
1.16 |
#include <cstdio> |
53 |
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#include <grp.h> |
54 |
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|
55 |
root |
1.40 |
#include "rxvtutil.h" |
56 |
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#include "fdpass.h" |
57 |
root |
1.39 |
#include "ptytty.h" |
58 |
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|
59 |
root |
1.36 |
///////////////////////////////////////////////////////////////////////////// |
60 |
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|
61 |
pcg |
1.1 |
/* ------------------------------------------------------------------------- * |
62 |
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* GET PSEUDO TELETYPE - MASTER AND SLAVE * |
63 |
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* ------------------------------------------------------------------------- */ |
64 |
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/* |
65 |
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* Returns pty file descriptor, or -1 on failure |
66 |
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* If successful, ttydev is set to the name of the slave device. |
67 |
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* fd_tty _may_ also be set to an open fd to the slave device |
68 |
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*/ |
69 |
ayin |
1.44 |
static inline int |
70 |
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get_pty_streams (int *fd_tty, char **ttydev) |
71 |
pcg |
1.1 |
{ |
72 |
ayin |
1.49 |
#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
73 |
|
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# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
74 |
pcg |
1.4 |
int pfd; |
75 |
pcg |
1.1 |
|
76 |
root |
1.45 |
# if defined(PTYS_ARE_GETPT) |
77 |
ayin |
1.44 |
pfd = getpt(); |
78 |
root |
1.45 |
# elif defined(PTYS_ARE_POSIX) |
79 |
ayin |
1.44 |
pfd = posix_openpt (O_RDWR); |
80 |
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# else |
81 |
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pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
82 |
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# endif |
83 |
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if (pfd >= 0) |
84 |
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{ |
85 |
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if (grantpt (pfd) == 0 /* change slave permissions */ |
86 |
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&& unlockpt (pfd) == 0) |
87 |
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{ /* slave now unlocked */ |
88 |
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*ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
89 |
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return pfd; |
90 |
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} |
91 |
root |
1.45 |
|
92 |
ayin |
1.44 |
close (pfd); |
93 |
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} |
94 |
ayin |
1.49 |
# endif |
95 |
ayin |
1.44 |
#endif |
96 |
root |
1.45 |
|
97 |
ayin |
1.44 |
return -1; |
98 |
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} |
99 |
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100 |
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static inline int |
101 |
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get_pty_openpty (int *fd_tty, char **ttydev) |
102 |
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{ |
103 |
pcg |
1.1 |
#ifdef PTYS_ARE_OPENPTY |
104 |
ayin |
1.44 |
int pfd; |
105 |
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int res; |
106 |
root |
1.26 |
char tty_name[sizeof "/dev/pts/????\0"]; |
107 |
ayin |
1.44 |
|
108 |
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res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
109 |
root |
1.27 |
if (res != -1) |
110 |
pcg |
1.4 |
{ |
111 |
pcg |
1.6 |
*ttydev = strdup (tty_name); |
112 |
pcg |
1.4 |
return pfd; |
113 |
pcg |
1.1 |
} |
114 |
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#endif |
115 |
root |
1.45 |
|
116 |
ayin |
1.44 |
return -1; |
117 |
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} |
118 |
pcg |
1.1 |
|
119 |
ayin |
1.44 |
static inline int |
120 |
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get_pty__getpty (int *fd_tty, char **ttydev) |
121 |
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{ |
122 |
pcg |
1.1 |
#ifdef PTYS_ARE__GETPTY |
123 |
ayin |
1.44 |
int pfd; |
124 |
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|
125 |
pcg |
1.6 |
*ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
126 |
pcg |
1.4 |
if (*ttydev != NULL) |
127 |
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return pfd; |
128 |
pcg |
1.1 |
#endif |
129 |
root |
1.45 |
|
130 |
ayin |
1.44 |
return -1; |
131 |
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} |
132 |
pcg |
1.1 |
|
133 |
ayin |
1.44 |
static inline int |
134 |
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get_pty_ptc (int *fd_tty, char **ttydev) |
135 |
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{ |
136 |
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#ifdef PTYS_ARE_PTC |
137 |
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int pfd; |
138 |
pcg |
1.4 |
|
139 |
pcg |
1.6 |
if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
140 |
pcg |
1.4 |
{ |
141 |
root |
1.16 |
*ttydev = strdup (ttyname (pfd)); |
142 |
pcg |
1.4 |
return pfd; |
143 |
pcg |
1.1 |
} |
144 |
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#endif |
145 |
root |
1.45 |
|
146 |
ayin |
1.44 |
return -1; |
147 |
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} |
148 |
pcg |
1.1 |
|
149 |
ayin |
1.44 |
static inline int |
150 |
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get_pty_clone (int *fd_tty, char **ttydev) |
151 |
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{ |
152 |
pcg |
1.1 |
#ifdef PTYS_ARE_CLONE |
153 |
ayin |
1.44 |
int pfd; |
154 |
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|
155 |
pcg |
1.6 |
if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
156 |
pcg |
1.4 |
{ |
157 |
root |
1.16 |
*ttydev = strdup (ptsname (pfd)); |
158 |
pcg |
1.4 |
return pfd; |
159 |
pcg |
1.1 |
} |
160 |
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#endif |
161 |
root |
1.45 |
|
162 |
ayin |
1.44 |
return -1; |
163 |
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} |
164 |
pcg |
1.1 |
|
165 |
ayin |
1.44 |
static inline int |
166 |
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get_pty_numeric (int *fd_tty, char **ttydev) |
167 |
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{ |
168 |
pcg |
1.1 |
#ifdef PTYS_ARE_NUMERIC |
169 |
root |
1.45 |
int pfd; |
170 |
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int idx; |
171 |
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char *c1, *c2; |
172 |
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char pty_name[] = "/dev/ptyp???"; |
173 |
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char tty_name[] = "/dev/ttyp???"; |
174 |
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175 |
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c1 = &(pty_name[sizeof (pty_name) - 4]); |
176 |
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c2 = &(tty_name[sizeof (tty_name) - 4]); |
177 |
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178 |
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for (idx = 0; idx < 256; idx++) |
179 |
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{ |
180 |
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sprintf (c1, "%d", idx); |
181 |
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sprintf (c2, "%d", idx); |
182 |
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183 |
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if (access (tty_name, F_OK) < 0) |
184 |
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{ |
185 |
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idx = 256; |
186 |
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break; |
187 |
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} |
188 |
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189 |
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if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
190 |
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{ |
191 |
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if (access (tty_name, R_OK | W_OK) == 0) |
192 |
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{ |
193 |
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*ttydev = strdup (tty_name); |
194 |
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return pfd; |
195 |
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} |
196 |
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197 |
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close (pfd); |
198 |
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} |
199 |
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} |
200 |
pcg |
1.1 |
#endif |
201 |
root |
1.45 |
|
202 |
|
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return -1; |
203 |
ayin |
1.44 |
} |
204 |
root |
1.16 |
|
205 |
ayin |
1.44 |
static inline int |
206 |
|
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get_pty_searched (int *fd_tty, char **ttydev) |
207 |
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{ |
208 |
pcg |
1.1 |
#ifdef PTYS_ARE_SEARCHED |
209 |
|
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# ifndef PTYCHAR1 |
210 |
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# define PTYCHAR1 "pqrstuvwxyz" |
211 |
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# endif |
212 |
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# ifndef PTYCHAR2 |
213 |
|
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# define PTYCHAR2 "0123456789abcdef" |
214 |
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# endif |
215 |
root |
1.45 |
int pfd; |
216 |
|
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const char *c1, *c2; |
217 |
|
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char pty_name[] = "/dev/pty??"; |
218 |
|
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char tty_name[] = "/dev/tty??"; |
219 |
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|
220 |
|
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for (c1 = PTYCHAR1; *c1; c1++) |
221 |
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{ |
222 |
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pty_name[ (sizeof (pty_name) - 3)] = |
223 |
|
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tty_name[ (sizeof (pty_name) - 3)] = *c1; |
224 |
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|
225 |
|
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for (c2 = PTYCHAR2; *c2; c2++) |
226 |
|
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{ |
227 |
|
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pty_name[ (sizeof (pty_name) - 2)] = |
228 |
|
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tty_name[ (sizeof (pty_name) - 2)] = *c2; |
229 |
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|
230 |
|
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if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
231 |
|
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{ |
232 |
|
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if (access (tty_name, R_OK | W_OK) == 0) |
233 |
|
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{ |
234 |
|
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*ttydev = strdup (tty_name); |
235 |
|
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return pfd; |
236 |
|
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} |
237 |
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|
238 |
|
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close (pfd); |
239 |
|
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} |
240 |
|
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} |
241 |
|
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} |
242 |
pcg |
1.1 |
#endif |
243 |
root |
1.45 |
|
244 |
|
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return -1; |
245 |
ayin |
1.44 |
} |
246 |
root |
1.16 |
|
247 |
ayin |
1.44 |
static int |
248 |
|
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get_pty (int *fd_tty, char **ttydev) |
249 |
|
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{ |
250 |
|
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int pfd; |
251 |
|
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|
252 |
|
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if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1 |
253 |
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|| (pfd = get_pty_openpty (fd_tty, ttydev)) != -1 |
254 |
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|| (pfd = get_pty__getpty (fd_tty, ttydev)) != -1 |
255 |
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|| (pfd = get_pty_ptc (fd_tty, ttydev)) != -1 |
256 |
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|| (pfd = get_pty_clone (fd_tty, ttydev)) != -1 |
257 |
|
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|| (pfd = get_pty_numeric (fd_tty, ttydev)) != -1 |
258 |
|
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|| (pfd = get_pty_searched (fd_tty, ttydev)) != -1) |
259 |
|
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return pfd; |
260 |
root |
1.45 |
|
261 |
pcg |
1.4 |
return -1; |
262 |
pcg |
1.1 |
} |
263 |
|
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|
264 |
|
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/*----------------------------------------------------------------------*/ |
265 |
|
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/* |
266 |
|
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* Returns tty file descriptor, or -1 on failure |
267 |
|
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*/ |
268 |
root |
1.16 |
static int |
269 |
|
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get_tty (char *ttydev) |
270 |
pcg |
1.1 |
{ |
271 |
pcg |
1.4 |
return open (ttydev, O_RDWR | O_NOCTTY, 0); |
272 |
pcg |
1.1 |
} |
273 |
|
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|
274 |
|
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/*----------------------------------------------------------------------*/ |
275 |
|
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/* |
276 |
|
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* Make our tty a controlling tty so that /dev/tty points to us |
277 |
|
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*/ |
278 |
root |
1.16 |
static int |
279 |
root |
1.36 |
control_tty (int fd_tty) |
280 |
pcg |
1.1 |
{ |
281 |
pcg |
1.4 |
setsid (); |
282 |
root |
1.16 |
|
283 |
root |
1.47 |
#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
284 |
pcg |
1.4 |
/* |
285 |
|
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* Push STREAMS modules: |
286 |
|
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* ptem: pseudo-terminal hardware emulation module. |
287 |
|
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* ldterm: standard terminal line discipline. |
288 |
|
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* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
289 |
|
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* |
290 |
pcg |
1.6 |
* After we push the STREAMS modules, the first open () on the slave side |
291 |
pcg |
1.4 |
* (i.e. the next section between the dashes giving us "tty opened OK") |
292 |
|
|
* should make the "ptem" (or "ldterm" depending upon either which OS |
293 |
|
|
* version or which set of manual pages you have) module give us a |
294 |
pcg |
1.6 |
* controlling terminal. We must already have close ()d the master side |
295 |
pcg |
1.4 |
* fd in this child process before we push STREAMS modules on because the |
296 |
pcg |
1.6 |
* documentation is really unclear about whether it is any close () on |
297 |
|
|
* the master side or the last close () - i.e. a proper STREAMS dismantling |
298 |
|
|
* close () - on the master side which causes a hang up to be sent |
299 |
pcg |
1.4 |
* through - Geoff Wing |
300 |
|
|
*/ |
301 |
root |
1.47 |
# ifdef HAVE_ISASTREAM |
302 |
pcg |
1.4 |
if (isastream (fd_tty) == 1) |
303 |
root |
1.47 |
# endif |
304 |
pcg |
1.1 |
{ |
305 |
pcg |
1.4 |
ioctl (fd_tty, I_PUSH, "ptem"); |
306 |
|
|
ioctl (fd_tty, I_PUSH, "ldterm"); |
307 |
|
|
ioctl (fd_tty, I_PUSH, "ttcompat"); |
308 |
pcg |
1.1 |
} |
309 |
root |
1.47 |
#endif |
310 |
root |
1.45 |
|
311 |
|
|
ioctl (fd_tty, TIOCSCTTY, NULL); |
312 |
|
|
|
313 |
|
|
int fd = open ("/dev/tty", O_WRONLY); |
314 |
pcg |
1.4 |
if (fd < 0) |
315 |
|
|
return -1; /* fatal */ |
316 |
root |
1.45 |
|
317 |
pcg |
1.4 |
close (fd); |
318 |
|
|
|
319 |
|
|
return 0; |
320 |
pcg |
1.1 |
} |
321 |
root |
1.16 |
|
322 |
root |
1.36 |
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 |
|
|
|
365 |
root |
1.16 |
static struct ttyconf { |
366 |
|
|
gid_t gid; |
367 |
|
|
mode_t mode; |
368 |
|
|
|
369 |
|
|
ttyconf () |
370 |
|
|
{ |
371 |
|
|
#ifdef TTY_GID_SUPPORT |
372 |
|
|
struct group *gr = getgrnam ("tty"); |
373 |
|
|
|
374 |
|
|
if (gr) |
375 |
|
|
{ /* change group ownership of tty to "tty" */ |
376 |
|
|
mode = S_IRUSR | S_IWUSR | S_IWGRP; |
377 |
|
|
gid = gr->gr_gid; |
378 |
|
|
} |
379 |
|
|
else |
380 |
|
|
#endif /* TTY_GID_SUPPORT */ |
381 |
|
|
{ |
382 |
|
|
mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
383 |
ayin |
1.48 |
gid = 0; |
384 |
root |
1.16 |
} |
385 |
|
|
} |
386 |
|
|
} ttyconf; |
387 |
|
|
|
388 |
root |
1.36 |
rxvt_ptytty_unix::rxvt_ptytty_unix () |
389 |
root |
1.16 |
{ |
390 |
|
|
pty = tty = -1; |
391 |
|
|
name = 0; |
392 |
root |
1.35 |
#if UTMP_SUPPORT |
393 |
|
|
cmd_pid = 0; |
394 |
|
|
#endif |
395 |
root |
1.16 |
} |
396 |
|
|
|
397 |
root |
1.36 |
rxvt_ptytty_unix::~rxvt_ptytty_unix () |
398 |
root |
1.16 |
{ |
399 |
root |
1.43 |
#if UTMP_SUPPORT |
400 |
root |
1.35 |
logout (); |
401 |
root |
1.43 |
#endif |
402 |
root |
1.16 |
put (); |
403 |
|
|
} |
404 |
|
|
|
405 |
|
|
void |
406 |
root |
1.36 |
rxvt_ptytty_unix::put () |
407 |
root |
1.16 |
{ |
408 |
ayin |
1.49 |
chmod (name, RESTORE_TTY_MODE); |
409 |
|
|
chown (name, 0, ttyconf.gid); |
410 |
root |
1.16 |
|
411 |
|
|
if (pty >= 0) close (pty); |
412 |
|
|
close_tty (); |
413 |
|
|
free (name); |
414 |
|
|
|
415 |
|
|
pty = tty = -1; |
416 |
|
|
name = 0; |
417 |
|
|
} |
418 |
|
|
|
419 |
|
|
bool |
420 |
root |
1.36 |
rxvt_ptytty_unix::get () |
421 |
root |
1.16 |
{ |
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 |
ayin |
1.49 |
chown (name, getuid (), ttyconf.gid); /* fail silently */ |
433 |
|
|
chmod (name, ttyconf.mode); |
434 |
|
|
# ifdef HAVE_REVOKE |
435 |
|
|
revoke (name); |
436 |
|
|
# endif |
437 |
root |
1.16 |
#endif |
438 |
|
|
|
439 |
|
|
if ((tty = get_tty (name)) < 0) |
440 |
|
|
{ |
441 |
|
|
put (); |
442 |
|
|
return false; |
443 |
|
|
} |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
return true; |
447 |
|
|
} |
448 |
|
|
|
449 |
root |
1.40 |
#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 |
|
|
|
497 |
|
|
void |
498 |
|
|
rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
499 |
|
|
{ |
500 |
|
|
command cmd; |
501 |
|
|
|
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)); |
507 |
|
|
|
508 |
|
|
write (sock_fd, &cmd, sizeof (cmd)); |
509 |
|
|
} |
510 |
|
|
|
511 |
|
|
rxvt_ptytty_proxy::~rxvt_ptytty_proxy () |
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 |
root |
1.43 |
#if UTMP_SUPPORT |
552 |
root |
1.40 |
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 |
root |
1.43 |
#endif |
558 |
root |
1.40 |
} |
559 |
|
|
else if (cmd.type == command::destroy) |
560 |
|
|
{ |
561 |
|
|
rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
562 |
|
|
|
563 |
root |
1.42 |
if (pty) |
564 |
root |
1.40 |
{ |
565 |
root |
1.42 |
delete *pty; |
566 |
root |
1.40 |
ptys.erase (pty); |
567 |
|
|
} |
568 |
|
|
} |
569 |
|
|
else |
570 |
|
|
break; |
571 |
|
|
} |
572 |
|
|
|
573 |
|
|
// destroy all ptys |
574 |
|
|
for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
575 |
|
|
delete *i; |
576 |
|
|
} |
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) |
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 |
root |
1.41 |
for (int fd = 0; fd < 1023; fd++) |
603 |
root |
1.46 |
if (fd != sock_fd) |
604 |
root |
1.41 |
close (fd); |
605 |
root |
1.40 |
|
606 |
|
|
serve (); |
607 |
|
|
_exit (EXIT_SUCCESS); |
608 |
|
|
} |
609 |
|
|
} |
610 |
|
|
#endif |
611 |
|
|
|
612 |
root |
1.39 |
// a "factory" *g* |
613 |
root |
1.40 |
rxvt_ptytty * |
614 |
|
|
rxvt_new_ptytty () |
615 |
root |
1.39 |
{ |
616 |
root |
1.40 |
#if PTYTTY_HELPER |
617 |
|
|
if (pid > 0) |
618 |
root |
1.41 |
// use helper process |
619 |
|
|
return new rxvt_ptytty_proxy; |
620 |
root |
1.40 |
else |
621 |
|
|
#endif |
622 |
|
|
return new rxvt_ptytty_unix; |
623 |
root |
1.39 |
} |
624 |
|
|
|
625 |
pcg |
1.1 |
/*----------------------- end-of-file (C source) -----------------------*/ |
626 |
root |
1.16 |
|