1 |
root |
1.55 |
// This file is part of libptytty. Do not make local modifications. |
2 |
|
|
// http://software.schmorp.de/pkg/libptytty |
3 |
|
|
|
4 |
|
|
/*----------------------------------------------------------------------* |
5 |
pcg |
1.11 |
* File: ptytty.C |
6 |
pcg |
1.1 |
*----------------------------------------------------------------------* |
7 |
|
|
* |
8 |
|
|
* All portions of code are copyright by their respective author/s. |
9 |
|
|
* Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
10 |
root |
1.30 |
* Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
11 |
pcg |
1.1 |
* |
12 |
|
|
* This program is free software; you can redistribute it and/or modify |
13 |
|
|
* it under the terms of the GNU General Public License as published by |
14 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
15 |
|
|
* (at your option) any later version. |
16 |
|
|
* |
17 |
|
|
* This program is distributed in the hope that it will be useful, |
18 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
20 |
|
|
* GNU General Public License for more details. |
21 |
|
|
* |
22 |
|
|
* You should have received a copy of the GNU General Public License |
23 |
|
|
* along with this program; if not, write to the Free Software |
24 |
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
25 |
|
|
*---------------------------------------------------------------------*/ |
26 |
|
|
|
27 |
root |
1.55 |
#include "../config.h" |
28 |
root |
1.54 |
|
29 |
|
|
#include "fdpass.h" |
30 |
|
|
#include "ptytty.h" |
31 |
pcg |
1.1 |
|
32 |
root |
1.40 |
#include <cstdlib> |
33 |
|
|
#include <cstring> |
34 |
|
|
|
35 |
|
|
#include <sys/types.h> |
36 |
|
|
#include <sys/socket.h> |
37 |
|
|
#include <unistd.h> |
38 |
|
|
#include <fcntl.h> |
39 |
root |
1.31 |
|
40 |
pcg |
1.1 |
#ifdef HAVE_SYS_IOCTL_H |
41 |
|
|
# include <sys/ioctl.h> |
42 |
|
|
#endif |
43 |
ayin |
1.53 |
#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 |
pcg |
1.1 |
# include <sys/stropts.h> /* for I_PUSH */ |
45 |
|
|
#endif |
46 |
pcg |
1.10 |
#ifdef HAVE_ISASTREAM |
47 |
|
|
# include <stropts.h> |
48 |
|
|
#endif |
49 |
root |
1.31 |
#if defined(HAVE_PTY_H) |
50 |
root |
1.22 |
# include <pty.h> |
51 |
root |
1.31 |
#elif defined(HAVE_LIBUTIL_H) |
52 |
root |
1.16 |
# include <libutil.h> |
53 |
root |
1.31 |
#elif defined(HAVE_UTIL_H) |
54 |
root |
1.17 |
# include <util.h> |
55 |
pcg |
1.1 |
#endif |
56 |
ayin |
1.53 |
#ifdef TTY_GID_SUPPORT |
57 |
|
|
#include <grp.h> |
58 |
|
|
#endif |
59 |
pcg |
1.1 |
|
60 |
root |
1.16 |
#include <cstdio> |
61 |
|
|
|
62 |
root |
1.36 |
///////////////////////////////////////////////////////////////////////////// |
63 |
|
|
|
64 |
pcg |
1.1 |
/* ------------------------------------------------------------------------- * |
65 |
|
|
* GET PSEUDO TELETYPE - MASTER AND SLAVE * |
66 |
|
|
* ------------------------------------------------------------------------- */ |
67 |
|
|
/* |
68 |
|
|
* Returns pty file descriptor, or -1 on failure |
69 |
|
|
* If successful, ttydev is set to the name of the slave device. |
70 |
|
|
* fd_tty _may_ also be set to an open fd to the slave device |
71 |
|
|
*/ |
72 |
ayin |
1.53 |
#if defined(UNIX98_PTY) |
73 |
|
|
static int |
74 |
|
|
get_pty (int *fd_tty, char **ttydev) |
75 |
pcg |
1.1 |
{ |
76 |
pcg |
1.4 |
int pfd; |
77 |
pcg |
1.1 |
|
78 |
ayin |
1.53 |
# if defined(HAVE_GETPT) |
79 |
ayin |
1.44 |
pfd = getpt(); |
80 |
ayin |
1.53 |
# elif defined(HAVE_POSIX_OPENPT) |
81 |
ayin |
1.44 |
pfd = posix_openpt (O_RDWR); |
82 |
|
|
# else |
83 |
ayin |
1.53 |
pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
84 |
ayin |
1.44 |
# endif |
85 |
|
|
if (pfd >= 0) |
86 |
|
|
{ |
87 |
|
|
if (grantpt (pfd) == 0 /* change slave permissions */ |
88 |
|
|
&& unlockpt (pfd) == 0) |
89 |
|
|
{ /* slave now unlocked */ |
90 |
|
|
*ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
91 |
|
|
return pfd; |
92 |
|
|
} |
93 |
root |
1.45 |
|
94 |
ayin |
1.44 |
close (pfd); |
95 |
|
|
} |
96 |
root |
1.45 |
|
97 |
ayin |
1.44 |
return -1; |
98 |
|
|
} |
99 |
ayin |
1.53 |
#elif defined(HAVE_OPENPTY) |
100 |
|
|
static int |
101 |
|
|
get_pty (int *fd_tty, char **ttydev) |
102 |
ayin |
1.44 |
{ |
103 |
|
|
int pfd; |
104 |
|
|
int res; |
105 |
ayin |
1.51 |
char tty_name[32]; |
106 |
ayin |
1.44 |
|
107 |
|
|
res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
108 |
root |
1.27 |
if (res != -1) |
109 |
pcg |
1.4 |
{ |
110 |
pcg |
1.6 |
*ttydev = strdup (tty_name); |
111 |
pcg |
1.4 |
return pfd; |
112 |
pcg |
1.1 |
} |
113 |
root |
1.45 |
|
114 |
ayin |
1.44 |
return -1; |
115 |
|
|
} |
116 |
ayin |
1.53 |
#elif defined(HAVE__GETPTY) |
117 |
|
|
static int |
118 |
|
|
get_pty (int *fd_tty, char **ttydev) |
119 |
ayin |
1.44 |
{ |
120 |
|
|
int pfd; |
121 |
|
|
|
122 |
pcg |
1.6 |
*ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
123 |
pcg |
1.4 |
if (*ttydev != NULL) |
124 |
|
|
return pfd; |
125 |
root |
1.45 |
|
126 |
ayin |
1.44 |
return -1; |
127 |
|
|
} |
128 |
ayin |
1.53 |
#elif defined(HAVE_DEV_PTC) |
129 |
|
|
static int |
130 |
|
|
get_pty (int *fd_tty, char **ttydev) |
131 |
ayin |
1.44 |
{ |
132 |
|
|
int pfd; |
133 |
pcg |
1.4 |
|
134 |
pcg |
1.6 |
if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
135 |
pcg |
1.4 |
{ |
136 |
root |
1.16 |
*ttydev = strdup (ttyname (pfd)); |
137 |
pcg |
1.4 |
return pfd; |
138 |
pcg |
1.1 |
} |
139 |
root |
1.45 |
|
140 |
ayin |
1.44 |
return -1; |
141 |
|
|
} |
142 |
ayin |
1.53 |
#elif defined(HAVE_DEV_CLONE) |
143 |
|
|
static int |
144 |
|
|
get_pty (int *fd_tty, char **ttydev) |
145 |
ayin |
1.44 |
{ |
146 |
|
|
int pfd; |
147 |
|
|
|
148 |
pcg |
1.6 |
if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
149 |
pcg |
1.4 |
{ |
150 |
root |
1.16 |
*ttydev = strdup (ptsname (pfd)); |
151 |
pcg |
1.4 |
return pfd; |
152 |
pcg |
1.1 |
} |
153 |
root |
1.45 |
|
154 |
ayin |
1.44 |
return -1; |
155 |
|
|
} |
156 |
ayin |
1.53 |
#else |
157 |
|
|
/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
158 |
|
|
static int |
159 |
|
|
get_pty (int *fd_tty, char **ttydev) |
160 |
ayin |
1.44 |
{ |
161 |
root |
1.45 |
int pfd; |
162 |
ayin |
1.53 |
int i; |
163 |
|
|
char pty_name[32]; |
164 |
|
|
char tty_name[32]; |
165 |
|
|
const char *majors = "pqrstuvwxyzabcde"; |
166 |
|
|
const char *minors = "0123456789abcdef"; |
167 |
|
|
for (i = 0; i < 256; i++) |
168 |
|
|
{ |
169 |
|
|
snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
170 |
|
|
snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
171 |
|
|
if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
172 |
root |
1.45 |
{ |
173 |
ayin |
1.53 |
snprintf(pty_name, 32, "/dev/ptyp%d", i); |
174 |
|
|
snprintf(tty_name, 32, "/dev/ttyp%d", i); |
175 |
|
|
if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
176 |
|
|
continue; |
177 |
root |
1.45 |
} |
178 |
ayin |
1.53 |
if (access (tty_name, R_OK | W_OK) == 0) |
179 |
root |
1.45 |
{ |
180 |
ayin |
1.53 |
*ttydev = strdup (tty_name); |
181 |
|
|
return pfd; |
182 |
|
|
} |
183 |
root |
1.45 |
|
184 |
ayin |
1.53 |
close (pfd); |
185 |
root |
1.45 |
} |
186 |
ayin |
1.44 |
} |
187 |
pcg |
1.1 |
#endif |
188 |
root |
1.45 |
|
189 |
pcg |
1.1 |
/*----------------------------------------------------------------------*/ |
190 |
|
|
/* |
191 |
|
|
* Returns tty file descriptor, or -1 on failure |
192 |
|
|
*/ |
193 |
root |
1.16 |
static int |
194 |
|
|
get_tty (char *ttydev) |
195 |
pcg |
1.1 |
{ |
196 |
pcg |
1.4 |
return open (ttydev, O_RDWR | O_NOCTTY, 0); |
197 |
pcg |
1.1 |
} |
198 |
|
|
|
199 |
|
|
/*----------------------------------------------------------------------*/ |
200 |
|
|
/* |
201 |
|
|
* Make our tty a controlling tty so that /dev/tty points to us |
202 |
|
|
*/ |
203 |
root |
1.16 |
static int |
204 |
root |
1.36 |
control_tty (int fd_tty) |
205 |
pcg |
1.1 |
{ |
206 |
pcg |
1.4 |
setsid (); |
207 |
root |
1.16 |
|
208 |
ayin |
1.53 |
#if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
209 |
pcg |
1.4 |
/* |
210 |
|
|
* Push STREAMS modules: |
211 |
|
|
* ptem: pseudo-terminal hardware emulation module. |
212 |
|
|
* ldterm: standard terminal line discipline. |
213 |
|
|
* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
214 |
|
|
* |
215 |
pcg |
1.6 |
* After we push the STREAMS modules, the first open () on the slave side |
216 |
pcg |
1.4 |
* (i.e. the next section between the dashes giving us "tty opened OK") |
217 |
|
|
* should make the "ptem" (or "ldterm" depending upon either which OS |
218 |
|
|
* version or which set of manual pages you have) module give us a |
219 |
pcg |
1.6 |
* controlling terminal. We must already have close ()d the master side |
220 |
pcg |
1.4 |
* fd in this child process before we push STREAMS modules on because the |
221 |
pcg |
1.6 |
* documentation is really unclear about whether it is any close () on |
222 |
|
|
* the master side or the last close () - i.e. a proper STREAMS dismantling |
223 |
|
|
* close () - on the master side which causes a hang up to be sent |
224 |
pcg |
1.4 |
* through - Geoff Wing |
225 |
|
|
*/ |
226 |
root |
1.47 |
# ifdef HAVE_ISASTREAM |
227 |
pcg |
1.4 |
if (isastream (fd_tty) == 1) |
228 |
root |
1.47 |
# endif |
229 |
pcg |
1.1 |
{ |
230 |
pcg |
1.4 |
ioctl (fd_tty, I_PUSH, "ptem"); |
231 |
|
|
ioctl (fd_tty, I_PUSH, "ldterm"); |
232 |
|
|
ioctl (fd_tty, I_PUSH, "ttcompat"); |
233 |
pcg |
1.1 |
} |
234 |
root |
1.47 |
#endif |
235 |
root |
1.45 |
|
236 |
|
|
ioctl (fd_tty, TIOCSCTTY, NULL); |
237 |
|
|
|
238 |
|
|
int fd = open ("/dev/tty", O_WRONLY); |
239 |
pcg |
1.4 |
if (fd < 0) |
240 |
|
|
return -1; /* fatal */ |
241 |
root |
1.45 |
|
242 |
pcg |
1.4 |
close (fd); |
243 |
|
|
|
244 |
|
|
return 0; |
245 |
pcg |
1.1 |
} |
246 |
root |
1.16 |
|
247 |
root |
1.36 |
void |
248 |
root |
1.54 |
ptytty::close_tty () |
249 |
root |
1.36 |
{ |
250 |
|
|
if (tty < 0) |
251 |
|
|
return; |
252 |
|
|
|
253 |
|
|
close (tty); |
254 |
|
|
tty = -1; |
255 |
|
|
} |
256 |
|
|
|
257 |
|
|
bool |
258 |
root |
1.54 |
ptytty::make_controlling_tty () |
259 |
root |
1.36 |
{ |
260 |
|
|
return control_tty (tty) >= 0; |
261 |
|
|
} |
262 |
|
|
|
263 |
|
|
void |
264 |
root |
1.54 |
ptytty::set_utf8_mode (bool on) |
265 |
root |
1.36 |
{ |
266 |
|
|
#ifdef IUTF8 |
267 |
|
|
if (pty < 0) |
268 |
|
|
return; |
269 |
|
|
|
270 |
|
|
struct termios tio; |
271 |
|
|
|
272 |
|
|
if (tcgetattr (pty, &tio) != -1) |
273 |
|
|
{ |
274 |
|
|
tcflag_t new_cflag = tio.c_iflag; |
275 |
|
|
|
276 |
|
|
if (on) |
277 |
|
|
new_cflag |= IUTF8; |
278 |
|
|
else |
279 |
|
|
new_cflag &= ~IUTF8; |
280 |
|
|
|
281 |
|
|
if (new_cflag != tio.c_iflag) |
282 |
|
|
{ |
283 |
|
|
tio.c_iflag = new_cflag; |
284 |
|
|
tcsetattr (pty, TCSANOW, &tio); |
285 |
|
|
} |
286 |
|
|
} |
287 |
|
|
#endif |
288 |
|
|
} |
289 |
|
|
|
290 |
root |
1.16 |
static struct ttyconf { |
291 |
|
|
gid_t gid; |
292 |
|
|
mode_t mode; |
293 |
|
|
|
294 |
|
|
ttyconf () |
295 |
|
|
{ |
296 |
|
|
#ifdef TTY_GID_SUPPORT |
297 |
|
|
struct group *gr = getgrnam ("tty"); |
298 |
|
|
|
299 |
|
|
if (gr) |
300 |
|
|
{ /* change group ownership of tty to "tty" */ |
301 |
|
|
mode = S_IRUSR | S_IWUSR | S_IWGRP; |
302 |
|
|
gid = gr->gr_gid; |
303 |
|
|
} |
304 |
|
|
else |
305 |
|
|
#endif /* TTY_GID_SUPPORT */ |
306 |
|
|
{ |
307 |
|
|
mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
308 |
ayin |
1.48 |
gid = 0; |
309 |
root |
1.16 |
} |
310 |
|
|
} |
311 |
|
|
} ttyconf; |
312 |
|
|
|
313 |
root |
1.54 |
ptytty_unix::ptytty_unix () |
314 |
root |
1.16 |
{ |
315 |
|
|
name = 0; |
316 |
root |
1.35 |
#if UTMP_SUPPORT |
317 |
|
|
cmd_pid = 0; |
318 |
|
|
#endif |
319 |
root |
1.16 |
} |
320 |
|
|
|
321 |
root |
1.54 |
ptytty_unix::~ptytty_unix () |
322 |
root |
1.16 |
{ |
323 |
root |
1.43 |
#if UTMP_SUPPORT |
324 |
root |
1.35 |
logout (); |
325 |
root |
1.43 |
#endif |
326 |
root |
1.16 |
put (); |
327 |
|
|
} |
328 |
|
|
|
329 |
|
|
void |
330 |
root |
1.54 |
ptytty_unix::put () |
331 |
root |
1.16 |
{ |
332 |
ayin |
1.49 |
chmod (name, RESTORE_TTY_MODE); |
333 |
|
|
chown (name, 0, ttyconf.gid); |
334 |
root |
1.16 |
|
335 |
|
|
close_tty (); |
336 |
root |
1.50 |
|
337 |
|
|
if (pty >= 0) |
338 |
|
|
close (pty); |
339 |
|
|
|
340 |
root |
1.16 |
free (name); |
341 |
|
|
|
342 |
|
|
pty = tty = -1; |
343 |
|
|
name = 0; |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
bool |
347 |
root |
1.54 |
ptytty_unix::get () |
348 |
root |
1.16 |
{ |
349 |
|
|
/* get master (pty) */ |
350 |
|
|
if ((pty = get_pty (&tty, &name)) < 0) |
351 |
|
|
return false; |
352 |
|
|
|
353 |
|
|
fcntl (pty, F_SETFL, O_NONBLOCK); |
354 |
|
|
|
355 |
|
|
/* get slave (tty) */ |
356 |
|
|
if (tty < 0) |
357 |
|
|
{ |
358 |
|
|
#ifndef NO_SETOWNER_TTYDEV |
359 |
ayin |
1.49 |
chown (name, getuid (), ttyconf.gid); /* fail silently */ |
360 |
|
|
chmod (name, ttyconf.mode); |
361 |
|
|
# ifdef HAVE_REVOKE |
362 |
|
|
revoke (name); |
363 |
|
|
# endif |
364 |
root |
1.16 |
#endif |
365 |
|
|
|
366 |
|
|
if ((tty = get_tty (name)) < 0) |
367 |
|
|
{ |
368 |
|
|
put (); |
369 |
|
|
return false; |
370 |
|
|
} |
371 |
|
|
} |
372 |
|
|
|
373 |
|
|
return true; |
374 |
|
|
} |
375 |
|
|
|
376 |
root |
1.40 |
#if PTYTTY_HELPER |
377 |
|
|
|
378 |
|
|
static int sock_fd; |
379 |
|
|
static int pid; |
380 |
|
|
|
381 |
|
|
struct command |
382 |
|
|
{ |
383 |
|
|
enum { get, login, destroy } type; |
384 |
|
|
|
385 |
root |
1.54 |
ptytty *id; |
386 |
root |
1.40 |
|
387 |
|
|
bool login_shell; |
388 |
|
|
int cmd_pid; |
389 |
|
|
char hostname[512]; // arbitrary, but should be plenty |
390 |
|
|
}; |
391 |
|
|
|
392 |
root |
1.54 |
struct ptytty_proxy : ptytty |
393 |
root |
1.40 |
{ |
394 |
root |
1.54 |
ptytty *id; |
395 |
root |
1.40 |
|
396 |
root |
1.54 |
ptytty_proxy () |
397 |
|
|
: id(0) |
398 |
|
|
{ |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
~ptytty_proxy (); |
402 |
root |
1.40 |
|
403 |
|
|
bool get (); |
404 |
|
|
void login (int cmd_pid, bool login_shell, const char *hostname); |
405 |
|
|
}; |
406 |
|
|
|
407 |
|
|
bool |
408 |
root |
1.54 |
ptytty_proxy::get () |
409 |
root |
1.40 |
{ |
410 |
|
|
command cmd; |
411 |
|
|
|
412 |
|
|
cmd.type = command::get; |
413 |
|
|
|
414 |
|
|
write (sock_fd, &cmd, sizeof (cmd)); |
415 |
|
|
|
416 |
|
|
if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
417 |
root |
1.54 |
fatal ("protocol error while creating pty using helper process, aborting.\n"); |
418 |
root |
1.40 |
|
419 |
|
|
if (!id) |
420 |
|
|
return false; |
421 |
|
|
|
422 |
root |
1.54 |
if ((pty = ptytty_recv_fd (sock_fd)) < 0 |
423 |
|
|
|| (tty = ptytty_recv_fd (sock_fd)) < 0) |
424 |
|
|
fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
425 |
root |
1.40 |
|
426 |
|
|
return true; |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
void |
430 |
root |
1.54 |
ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
431 |
root |
1.40 |
{ |
432 |
|
|
command cmd; |
433 |
|
|
|
434 |
|
|
cmd.type = command::login; |
435 |
|
|
cmd.id = id; |
436 |
|
|
cmd.cmd_pid = cmd_pid; |
437 |
|
|
cmd.login_shell = login_shell; |
438 |
|
|
strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
439 |
|
|
|
440 |
|
|
write (sock_fd, &cmd, sizeof (cmd)); |
441 |
|
|
} |
442 |
|
|
|
443 |
root |
1.54 |
ptytty_proxy::~ptytty_proxy () |
444 |
root |
1.40 |
{ |
445 |
root |
1.54 |
if (id) |
446 |
|
|
{ |
447 |
|
|
command cmd; |
448 |
root |
1.40 |
|
449 |
root |
1.54 |
cmd.type = command::destroy; |
450 |
|
|
cmd.id = id; |
451 |
root |
1.40 |
|
452 |
root |
1.54 |
write (sock_fd, &cmd, sizeof (cmd)); |
453 |
|
|
} |
454 |
root |
1.40 |
} |
455 |
|
|
|
456 |
|
|
static |
457 |
|
|
void serve () |
458 |
|
|
{ |
459 |
|
|
command cmd; |
460 |
root |
1.54 |
vector<ptytty *> ptys; |
461 |
root |
1.40 |
|
462 |
|
|
while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
463 |
|
|
{ |
464 |
|
|
if (cmd.type == command::get) |
465 |
|
|
{ |
466 |
|
|
// -> id ptyfd ttyfd |
467 |
root |
1.54 |
cmd.id = new ptytty_unix; |
468 |
root |
1.40 |
|
469 |
|
|
if (cmd.id->get ()) |
470 |
|
|
{ |
471 |
|
|
write (sock_fd, &cmd.id, sizeof (cmd.id)); |
472 |
|
|
ptys.push_back (cmd.id); |
473 |
|
|
|
474 |
root |
1.54 |
ptytty_send_fd (sock_fd, cmd.id->pty); |
475 |
|
|
ptytty_send_fd (sock_fd, cmd.id->tty); |
476 |
root |
1.40 |
} |
477 |
|
|
else |
478 |
|
|
{ |
479 |
|
|
delete cmd.id; |
480 |
|
|
cmd.id = 0; |
481 |
|
|
write (sock_fd, &cmd.id, sizeof (cmd.id)); |
482 |
|
|
} |
483 |
|
|
} |
484 |
|
|
else if (cmd.type == command::login) |
485 |
|
|
{ |
486 |
root |
1.43 |
#if UTMP_SUPPORT |
487 |
root |
1.40 |
if (find (ptys.begin (), ptys.end (), cmd.id)) |
488 |
|
|
{ |
489 |
|
|
cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
490 |
|
|
cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
491 |
|
|
} |
492 |
root |
1.43 |
#endif |
493 |
root |
1.40 |
} |
494 |
|
|
else if (cmd.type == command::destroy) |
495 |
|
|
{ |
496 |
root |
1.54 |
ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
497 |
root |
1.40 |
|
498 |
root |
1.42 |
if (pty) |
499 |
root |
1.40 |
{ |
500 |
root |
1.42 |
delete *pty; |
501 |
root |
1.40 |
ptys.erase (pty); |
502 |
|
|
} |
503 |
|
|
} |
504 |
|
|
else |
505 |
|
|
break; |
506 |
|
|
} |
507 |
|
|
|
508 |
|
|
// destroy all ptys |
509 |
root |
1.54 |
for (ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
510 |
root |
1.40 |
delete *i; |
511 |
|
|
} |
512 |
|
|
|
513 |
root |
1.54 |
void ptytty_server () |
514 |
root |
1.40 |
{ |
515 |
|
|
int sv[2]; |
516 |
|
|
|
517 |
|
|
if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
518 |
root |
1.54 |
fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
519 |
root |
1.40 |
|
520 |
|
|
pid = fork (); |
521 |
|
|
|
522 |
|
|
if (pid < 0) |
523 |
root |
1.54 |
fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
524 |
root |
1.40 |
|
525 |
|
|
if (pid) |
526 |
|
|
{ |
527 |
root |
1.54 |
// client, process |
528 |
root |
1.40 |
sock_fd = sv[0]; |
529 |
|
|
close (sv[1]); |
530 |
|
|
fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
531 |
|
|
} |
532 |
|
|
else |
533 |
|
|
{ |
534 |
|
|
// server, pty-helper |
535 |
|
|
sock_fd = sv[1]; |
536 |
|
|
|
537 |
root |
1.41 |
for (int fd = 0; fd < 1023; fd++) |
538 |
root |
1.46 |
if (fd != sock_fd) |
539 |
root |
1.41 |
close (fd); |
540 |
root |
1.40 |
|
541 |
|
|
serve (); |
542 |
|
|
_exit (EXIT_SUCCESS); |
543 |
|
|
} |
544 |
|
|
} |
545 |
root |
1.50 |
|
546 |
root |
1.40 |
#endif |
547 |
|
|
|
548 |
root |
1.39 |
// a "factory" *g* |
549 |
root |
1.54 |
ptytty * |
550 |
|
|
new_ptytty () |
551 |
root |
1.39 |
{ |
552 |
root |
1.40 |
#if PTYTTY_HELPER |
553 |
|
|
if (pid > 0) |
554 |
root |
1.41 |
// use helper process |
555 |
root |
1.54 |
return new ptytty_proxy; |
556 |
root |
1.40 |
else |
557 |
|
|
#endif |
558 |
root |
1.54 |
return new ptytty_unix; |
559 |
root |
1.39 |
} |
560 |
|
|
|
561 |
pcg |
1.1 |
/*----------------------- end-of-file (C source) -----------------------*/ |
562 |
root |
1.16 |
|