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5 | * File: ptytty.C |
5 | * File: ptytty.C |
6 | *----------------------------------------------------------------------* |
6 | *----------------------------------------------------------------------* |
7 | * |
7 | * |
8 | * All portions of code are copyright by their respective author/s. |
8 | * All portions of code are copyright by their respective author/s. |
9 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
9 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
10 | * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
10 | * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de> |
11 | * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it> |
11 | * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it> |
12 | * |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the GNU General Public License as published by |
14 | * it under the terms of the GNU General Public License as published by |
15 | * the Free Software Foundation; either version 2 of the License, or |
15 | * the Free Software Foundation; either version 2 of the License, or |
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23 | * You should have received a copy of the GNU General Public License |
23 | * You should have received a copy of the GNU General Public License |
24 | * along with this program; if not, write to the Free Software |
24 | * along with this program; if not, write to the Free Software |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
26 | *---------------------------------------------------------------------*/ |
26 | *---------------------------------------------------------------------*/ |
27 | |
27 | |
28 | #include "../config.h" |
28 | #include "config.h" |
29 | |
29 | |
30 | #include "ptytty.h" |
30 | #include "ptytty.h" |
31 | |
31 | |
32 | #include <cstdlib> |
32 | #include <cstdlib> |
33 | #include <cstring> |
33 | #include <cstring> |
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39 | #include <fcntl.h> |
39 | #include <fcntl.h> |
40 | |
40 | |
41 | #ifdef HAVE_SYS_IOCTL_H |
41 | #ifdef HAVE_SYS_IOCTL_H |
42 | # include <sys/ioctl.h> |
42 | # include <sys/ioctl.h> |
43 | #endif |
43 | #endif |
44 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 | #if defined(HAVE_SYS_STROPTS_H) |
45 | # include <sys/stropts.h> /* for I_PUSH */ |
45 | # include <sys/stropts.h> /* for I_PUSH */ |
46 | #endif |
46 | #endif |
47 | #ifdef HAVE_ISASTREAM |
47 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
48 | # include <stropts.h> |
48 | # include <stropts.h> |
49 | #endif |
49 | #endif |
50 | #if defined(HAVE_PTY_H) |
50 | #if defined(HAVE_PTY_H) |
51 | # include <pty.h> |
51 | # include <pty.h> |
52 | #elif defined(HAVE_LIBUTIL_H) |
52 | #elif defined(HAVE_LIBUTIL_H) |
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76 | get_pty (int *fd_tty, char **ttydev) |
76 | get_pty (int *fd_tty, char **ttydev) |
77 | { |
77 | { |
78 | int pfd; |
78 | int pfd; |
79 | |
79 | |
80 | # if defined(HAVE_GETPT) |
80 | # if defined(HAVE_GETPT) |
81 | pfd = getpt(); |
81 | pfd = getpt (); |
82 | # elif defined(HAVE_POSIX_OPENPT) |
82 | # elif defined(HAVE_POSIX_OPENPT) |
83 | pfd = posix_openpt (O_RDWR); |
83 | pfd = posix_openpt (O_RDWR | O_NOCTTY); |
84 | # else |
84 | # else |
|
|
85 | # ifdef _AIX |
85 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
86 | pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0); |
|
|
87 | # else |
|
|
88 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
|
|
89 | # endif |
86 | # endif |
90 | # endif |
87 | |
91 | |
88 | if (pfd >= 0) |
92 | if (pfd >= 0) |
89 | { |
93 | { |
90 | if (grantpt (pfd) == 0 /* change slave permissions */ |
94 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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126 | get_pty (int *fd_tty, char **ttydev) |
130 | get_pty (int *fd_tty, char **ttydev) |
127 | { |
131 | { |
128 | int pfd; |
132 | int pfd; |
129 | char *slave; |
133 | char *slave; |
130 | |
134 | |
131 | slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
135 | slave = _getpty (&pfd, O_RDWR | O_NOCTTY, 0622, 0); |
132 | |
136 | |
133 | if (slave != NULL) |
137 | if (slave != NULL) |
134 | { |
138 | { |
135 | *ttydev = strdup (slave); |
139 | *ttydev = strdup (slave); |
136 | return pfd; |
|
|
137 | } |
|
|
138 | |
|
|
139 | return -1; |
|
|
140 | } |
|
|
141 | |
|
|
142 | #elif defined(HAVE_DEV_PTC) |
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143 | |
|
|
144 | static int |
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145 | get_pty (int *fd_tty, char **ttydev) |
|
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146 | { |
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147 | int pfd; |
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148 | |
|
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149 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
150 | { |
|
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151 | *ttydev = strdup (ttyname (pfd)); |
|
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152 | return pfd; |
|
|
153 | } |
|
|
154 | |
|
|
155 | return -1; |
|
|
156 | } |
|
|
157 | |
|
|
158 | #elif defined(HAVE_DEV_CLONE) |
|
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159 | |
|
|
160 | static int |
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161 | get_pty (int *fd_tty, char **ttydev) |
|
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162 | { |
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163 | int pfd; |
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164 | |
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165 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
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166 | { |
|
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167 | *ttydev = strdup (ptsname (pfd)); |
|
|
168 | return pfd; |
140 | return pfd; |
169 | } |
141 | } |
170 | |
142 | |
171 | return -1; |
143 | return -1; |
172 | } |
144 | } |
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184 | const char *majors = "pqrstuvwxyzabcde"; |
156 | const char *majors = "pqrstuvwxyzabcde"; |
185 | const char *minors = "0123456789abcdef"; |
157 | const char *minors = "0123456789abcdef"; |
186 | |
158 | |
187 | for (i = 0; i < 256; i++) |
159 | for (i = 0; i < 256; i++) |
188 | { |
160 | { |
189 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
161 | snprintf (pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
190 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
162 | snprintf (tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
191 | |
163 | |
192 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
164 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
193 | { |
165 | { |
194 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
166 | snprintf (pty_name, 32, "/dev/ptyp%d", i); |
195 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
167 | snprintf (tty_name, 32, "/dev/ttyp%d", i); |
196 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
168 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
197 | continue; |
169 | continue; |
198 | } |
170 | } |
199 | |
171 | |
200 | if (access (tty_name, R_OK | W_OK) == 0) |
172 | if (access (tty_name, R_OK | W_OK) == 0) |
… | |
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229 | control_tty (int fd_tty) |
201 | control_tty (int fd_tty) |
230 | { |
202 | { |
231 | int fd; |
203 | int fd; |
232 | |
204 | |
233 | setsid (); |
205 | setsid (); |
234 | |
|
|
235 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
|
|
236 | /* |
|
|
237 | * Push STREAMS modules: |
|
|
238 | * ptem: pseudo-terminal hardware emulation module. |
|
|
239 | * ldterm: standard terminal line discipline. |
|
|
240 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
|
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241 | * |
|
|
242 | * After we push the STREAMS modules, the first open () on the slave side |
|
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243 | * (i.e. the next section between the dashes giving us "tty opened OK") |
|
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244 | * should make the "ptem" (or "ldterm" depending upon either which OS |
|
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245 | * version or which set of manual pages you have) module give us a |
|
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246 | * controlling terminal. We must already have close ()d the master side |
|
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247 | * fd in this child process before we push STREAMS modules on because the |
|
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248 | * documentation is really unclear about whether it is any close () on |
|
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249 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
|
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250 | * close () - on the master side which causes a hang up to be sent |
|
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251 | * through - Geoff Wing |
|
|
252 | */ |
|
|
253 | # ifdef HAVE_ISASTREAM |
|
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254 | if (isastream (fd_tty) == 1) |
|
|
255 | # endif |
|
|
256 | { |
|
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257 | ioctl (fd_tty, I_PUSH, "ptem"); |
|
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258 | ioctl (fd_tty, I_PUSH, "ldterm"); |
|
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259 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
|
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260 | } |
|
|
261 | #endif |
|
|
262 | |
206 | |
263 | #ifdef TIOCSCTTY |
207 | #ifdef TIOCSCTTY |
264 | ioctl (fd_tty, TIOCSCTTY, NULL); |
208 | ioctl (fd_tty, TIOCSCTTY, NULL); |
265 | #else |
209 | #else |
266 | fd = open (ttyname (fd_tty), O_RDWR); |
210 | fd = open (ttyname (fd_tty), O_RDWR); |
… | |
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385 | { |
329 | { |
386 | /* get master (pty) */ |
330 | /* get master (pty) */ |
387 | if ((pty = get_pty (&tty, &name)) < 0) |
331 | if ((pty = get_pty (&tty, &name)) < 0) |
388 | return false; |
332 | return false; |
389 | |
333 | |
390 | fcntl (pty, F_SETFL, O_NONBLOCK); |
|
|
391 | |
|
|
392 | /* get slave (tty) */ |
334 | /* get slave (tty) */ |
393 | if (tty < 0) |
335 | if (tty < 0) |
394 | { |
336 | { |
395 | #ifndef NO_SETOWNER_TTYDEV |
337 | #ifndef NO_SETOWNER_TTYDEV |
396 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
338 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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405 | put (); |
347 | put (); |
406 | return false; |
348 | return false; |
407 | } |
349 | } |
408 | } |
350 | } |
409 | |
351 | |
|
|
352 | #if defined(I_PUSH) |
|
|
353 | /* |
|
|
354 | * Push STREAMS modules: |
|
|
355 | * ptem: pseudo-terminal hardware emulation module. |
|
|
356 | * ldterm: standard terminal line discipline. |
|
|
357 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
|
|
358 | * |
|
|
359 | * After we push the STREAMS modules, the first open () on the slave side |
|
|
360 | * should make the "ptem" (or "ldterm" depending upon either which OS |
|
|
361 | * version or which set of manual pages you have) module give us a |
|
|
362 | * controlling terminal. We must already have close ()d the master side |
|
|
363 | * fd in this child process before we push STREAMS modules on because the |
|
|
364 | * documentation is really unclear about whether it is any close () on |
|
|
365 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
|
|
366 | * close () - on the master side which causes a hang up to be sent |
|
|
367 | * through - Geoff Wing |
|
|
368 | */ |
|
|
369 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
|
|
370 | if (isastream (tty) == 1) |
|
|
371 | # endif |
|
|
372 | { |
|
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373 | ioctl (tty, I_PUSH, "ptem"); |
|
|
374 | ioctl (tty, I_PUSH, "ldterm"); |
|
|
375 | ioctl (tty, I_PUSH, "ttcompat"); |
|
|
376 | } |
|
|
377 | #endif |
|
|
378 | |
|
|
379 | #if UTMP_SUPPORT |
|
|
380 | # if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) |
|
|
381 | int fd_stdin = dup (STDIN_FILENO); |
|
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382 | dup2 (tty, STDIN_FILENO); |
|
|
383 | |
|
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384 | utmp_pos = ttyslot (); |
|
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385 | |
|
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386 | dup2 (fd_stdin, STDIN_FILENO); |
|
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387 | close (fd_stdin); |
|
|
388 | # endif |
|
|
389 | #endif |
|
|
390 | |
410 | return true; |
391 | return true; |
411 | } |
392 | } |
412 | |
393 | |