1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
2 | * File: ptytty.c |
2 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * $Id: ptytty.C,v 1.4 2003/12/02 21:49:46 pcg Exp $ |
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5 | * |
4 | * |
6 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
7 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
6 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
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7 | * Copyright (c) 2004 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. |
… | |
… | |
25 | |
25 | |
26 | /* |
26 | /* |
27 | * Try to be self-contained except for the above autoconfig'd defines |
27 | * Try to be self-contained except for the above autoconfig'd defines |
28 | */ |
28 | */ |
29 | |
29 | |
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30 | #if 0 |
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31 | #ifdef HAVE_GETPT |
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32 | # define _GNU_SOURCE |
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33 | #endif |
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34 | #endif |
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35 | |
30 | #include <stdio.h> |
36 | #include <cstdio> |
31 | #ifdef HAVE_STDLIB_H |
37 | #ifdef HAVE_STDLIB_H |
32 | # include <stdlib.h> |
38 | # include <cstdlib> |
33 | #endif |
39 | #endif |
34 | #ifdef HAVE_SYS_TYPES_H |
40 | #ifdef HAVE_SYS_TYPES_H |
35 | # include <sys/types.h> |
41 | # include <sys/types.h> |
36 | #endif |
42 | #endif |
37 | #ifdef HAVE_UNISTD_H |
43 | #ifdef HAVE_UNISTD_H |
38 | # include <unistd.h> |
44 | # include <unistd.h> |
39 | #endif |
45 | #endif |
40 | #if defined(HAVE_STRING_H) |
46 | #if defined(HAVE_STRING_H) |
41 | # include <string.h> |
47 | # include <cstring> |
42 | #endif |
48 | #endif |
43 | #ifdef HAVE_FCNTL_H |
49 | #ifdef HAVE_FCNTL_H |
44 | # include <fcntl.h> |
50 | # include <fcntl.h> |
45 | #endif |
51 | #endif |
46 | #ifdef HAVE_SYS_IOCTL_H |
52 | #ifdef HAVE_SYS_IOCTL_H |
47 | # include <sys/ioctl.h> |
53 | # include <sys/ioctl.h> |
48 | #endif |
54 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
55 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
56 | # include <sys/stropts.h> /* for I_PUSH */ |
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57 | #endif |
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58 | #ifdef HAVE_ISASTREAM |
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59 | # include <stropts.h> |
51 | #endif |
60 | #endif |
52 | |
61 | |
53 | #ifdef DEBUG_TTY |
62 | #ifdef DEBUG_TTY |
54 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
63 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
55 | #else |
64 | #else |
… | |
… | |
64 | * If successful, ttydev is set to the name of the slave device. |
73 | * If successful, ttydev is set to the name of the slave device. |
65 | * fd_tty _may_ also be set to an open fd to the slave device |
74 | * fd_tty _may_ also be set to an open fd to the slave device |
66 | */ |
75 | */ |
67 | /* EXTPROTO */ |
76 | /* EXTPROTO */ |
68 | int |
77 | int |
69 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
78 | rxvt_get_pty (int *fd_tty, const char **ttydev) |
70 | { |
79 | { |
71 | int pfd; |
80 | int pfd; |
72 | |
81 | |
73 | #ifdef PTYS_ARE_OPENPTY |
82 | #ifdef PTYS_ARE_OPENPTY |
74 | |
83 | |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
84 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | |
85 | |
77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
86 | if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
78 | { |
87 | { |
79 | *ttydev = strdup(tty_name); |
88 | *ttydev = strdup (tty_name); |
80 | return pfd; |
89 | return pfd; |
81 | } |
90 | } |
82 | #endif |
91 | #endif |
83 | |
92 | |
84 | #ifdef PTYS_ARE__GETPTY |
93 | #ifdef PTYS_ARE__GETPTY |
85 | *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
94 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
86 | if (*ttydev != NULL) |
95 | if (*ttydev != NULL) |
87 | return pfd; |
96 | return pfd; |
88 | #endif |
97 | #endif |
89 | |
98 | |
90 | #ifdef PTYS_ARE_GETPTY |
99 | #ifdef PTYS_ARE_GETPTY |
91 | |
100 | |
92 | char *ptydev; |
101 | char *ptydev; |
93 | |
102 | |
94 | while ((ptydev = getpty()) != NULL) |
103 | while ((ptydev = getpty ()) != NULL) |
95 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
104 | if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
96 | { |
105 | { |
97 | *ttydev = ptydev; |
106 | *ttydev = ptydev; |
98 | return pfd; |
107 | return pfd; |
99 | } |
108 | } |
100 | #endif |
109 | #endif |
… | |
… | |
102 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
111 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
103 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
112 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
104 | |
113 | |
105 | { |
114 | { |
106 | # ifdef PTYS_ARE_GETPT |
115 | # ifdef PTYS_ARE_GETPT |
107 | pfd = getpt(); |
116 | pfd = getpt (); |
108 | # else |
117 | # else |
109 | |
118 | |
110 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
119 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
111 | # endif |
120 | # endif |
112 | |
121 | |
113 | if (pfd >= 0) |
122 | if (pfd >= 0) |
114 | { |
123 | { |
115 | if (grantpt(pfd) == 0 /* change slave permissions */ |
124 | if (grantpt (pfd) == 0 /* change slave permissions */ |
116 | && unlockpt(pfd) == 0) |
125 | && unlockpt (pfd) == 0) |
117 | { /* slave now unlocked */ |
126 | { /* slave now unlocked */ |
118 | *ttydev = ptsname(pfd); /* get slave's name */ |
127 | *ttydev = ptsname (pfd); /* get slave's name */ |
119 | return pfd; |
128 | return pfd; |
120 | } |
129 | } |
121 | close(pfd); |
130 | close (pfd); |
122 | } |
131 | } |
123 | } |
132 | } |
124 | # endif |
133 | # endif |
125 | #endif |
134 | #endif |
126 | |
135 | |
127 | #ifdef PTYS_ARE_PTC |
136 | #ifdef PTYS_ARE_PTC |
128 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
137 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
129 | { |
138 | { |
130 | *ttydev = ttyname(pfd); |
139 | *ttydev = ttyname (pfd); |
131 | return pfd; |
140 | return pfd; |
132 | } |
141 | } |
133 | #endif |
142 | #endif |
134 | |
143 | |
135 | #ifdef PTYS_ARE_CLONE |
144 | #ifdef PTYS_ARE_CLONE |
136 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
145 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
137 | { |
146 | { |
138 | *ttydev = ptsname(pfd); |
147 | *ttydev = ptsname (pfd); |
139 | return pfd; |
148 | return pfd; |
140 | } |
149 | } |
141 | #endif |
150 | #endif |
142 | |
151 | |
143 | #ifdef PTYS_ARE_NUMERIC |
152 | #ifdef PTYS_ARE_NUMERIC |
… | |
… | |
145 | int idx; |
154 | int idx; |
146 | char *c1, *c2; |
155 | char *c1, *c2; |
147 | char pty_name[] = "/dev/ptyp???"; |
156 | char pty_name[] = "/dev/ptyp???"; |
148 | char tty_name[] = "/dev/ttyp???"; |
157 | char tty_name[] = "/dev/ttyp???"; |
149 | |
158 | |
150 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
159 | c1 = & (pty_name[sizeof (pty_name) - 4]); |
151 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
160 | c2 = & (tty_name[sizeof (tty_name) - 4]); |
152 | for (idx = 0; idx < 256; idx++) |
161 | for (idx = 0; idx < 256; idx++) |
153 | { |
162 | { |
154 | sprintf(c1, "%d", idx); |
163 | sprintf (c1, "%d", idx); |
155 | sprintf(c2, "%d", idx); |
164 | sprintf (c2, "%d", idx); |
156 | if (access(tty_name, F_OK) < 0) |
165 | if (access (tty_name, F_OK) < 0) |
157 | { |
166 | { |
158 | idx = 256; |
167 | idx = 256; |
159 | break; |
168 | break; |
160 | } |
169 | } |
161 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
170 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
162 | { |
171 | { |
163 | if (access(tty_name, R_OK | W_OK) == 0) |
172 | if (access (tty_name, R_OK | W_OK) == 0) |
164 | { |
173 | { |
165 | *ttydev = strdup(tty_name); |
174 | *ttydev = strdup (tty_name); |
166 | return pfd; |
175 | return pfd; |
167 | } |
176 | } |
168 | close(pfd); |
177 | close (pfd); |
169 | } |
178 | } |
170 | } |
179 | } |
171 | } |
180 | } |
172 | #endif |
181 | #endif |
173 | #ifdef PTYS_ARE_SEARCHED |
182 | #ifdef PTYS_ARE_SEARCHED |
… | |
… | |
183 | # define PTYCHAR2 "0123456789abcdef" |
192 | # define PTYCHAR2 "0123456789abcdef" |
184 | # endif |
193 | # endif |
185 | |
194 | |
186 | for (c1 = PTYCHAR1; *c1; c1++) |
195 | for (c1 = PTYCHAR1; *c1; c1++) |
187 | { |
196 | { |
188 | pty_name[(sizeof(pty_name) - 3)] = |
197 | pty_name[ (sizeof (pty_name) - 3)] = |
189 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
198 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
190 | for (c2 = PTYCHAR2; *c2; c2++) |
199 | for (c2 = PTYCHAR2; *c2; c2++) |
191 | { |
200 | { |
192 | pty_name[(sizeof(pty_name) - 2)] = |
201 | pty_name[ (sizeof (pty_name) - 2)] = |
193 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
202 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
194 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
203 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
195 | { |
204 | { |
196 | if (access(tty_name, R_OK | W_OK) == 0) |
205 | if (access (tty_name, R_OK | W_OK) == 0) |
197 | { |
206 | { |
198 | *ttydev = strdup(tty_name); |
207 | *ttydev = strdup (tty_name); |
199 | return pfd; |
208 | return pfd; |
200 | } |
209 | } |
201 | close(pfd); |
210 | close (pfd); |
202 | } |
211 | } |
203 | } |
212 | } |
204 | } |
213 | } |
205 | } |
214 | } |
206 | #endif |
215 | #endif |
… | |
… | |
227 | rxvt_control_tty (int fd_tty, const char *ttydev) |
236 | rxvt_control_tty (int fd_tty, const char *ttydev) |
228 | { |
237 | { |
229 | #ifndef __QNX__ |
238 | #ifndef __QNX__ |
230 | int fd; |
239 | int fd; |
231 | |
240 | |
232 | D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
241 | D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev)); |
233 | /* ---------------------------------------- */ |
242 | /* ---------------------------------------- */ |
234 | # ifdef HAVE_SETSID |
243 | # ifdef HAVE_SETSID |
235 | setsid (); |
244 | setsid (); |
236 | # endif |
245 | # endif |
237 | # if defined(HAVE_SETPGID) |
246 | # if defined(HAVE_SETPGID) |
… | |
… | |
241 | # endif |
250 | # endif |
242 | /* ---------------------------------------- */ |
251 | /* ---------------------------------------- */ |
243 | # ifdef TIOCNOTTY |
252 | # ifdef TIOCNOTTY |
244 | |
253 | |
245 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
246 | D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
255 | D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
247 | if (fd >= 0) |
256 | if (fd >= 0) |
248 | { |
257 | { |
249 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
258 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
250 | close (fd); |
259 | close (fd); |
251 | } |
260 | } |
252 | # endif |
261 | # endif |
253 | /* ---------------------------------------- */ |
262 | /* ---------------------------------------- */ |
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
263 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
255 | D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
264 | D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
256 | if (fd >= 0) |
265 | if (fd >= 0) |
257 | close (fd); /* ouch: still have controlling tty */ |
266 | close (fd); /* ouch: still have controlling tty */ |
258 | /* ---------------------------------------- */ |
267 | /* ---------------------------------------- */ |
259 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
268 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
260 | /* |
269 | /* |
261 | * Push STREAMS modules: |
270 | * Push STREAMS modules: |
262 | * ptem: pseudo-terminal hardware emulation module. |
271 | * ptem: pseudo-terminal hardware emulation module. |
263 | * ldterm: standard terminal line discipline. |
272 | * ldterm: standard terminal line discipline. |
264 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
273 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
265 | * |
274 | * |
266 | * After we push the STREAMS modules, the first open() on the slave side |
275 | * After we push the STREAMS modules, the first open () on the slave side |
267 | * (i.e. the next section between the dashes giving us "tty opened OK") |
276 | * (i.e. the next section between the dashes giving us "tty opened OK") |
268 | * should make the "ptem" (or "ldterm" depending upon either which OS |
277 | * should make the "ptem" (or "ldterm" depending upon either which OS |
269 | * version or which set of manual pages you have) module give us a |
278 | * version or which set of manual pages you have) module give us a |
270 | * controlling terminal. We must already have close()d the master side |
279 | * controlling terminal. We must already have close ()d the master side |
271 | * fd in this child process before we push STREAMS modules on because the |
280 | * fd in this child process before we push STREAMS modules on because the |
272 | * documentation is really unclear about whether it is any close() on |
281 | * documentation is really unclear about whether it is any close () on |
273 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
282 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
274 | * close() - on the master side which causes a hang up to be sent |
283 | * close () - on the master side which causes a hang up to be sent |
275 | * through - Geoff Wing |
284 | * through - Geoff Wing |
276 | */ |
285 | */ |
277 | # ifdef HAVE_ISASTREAM |
286 | # ifdef HAVE_ISASTREAM |
278 | if (isastream (fd_tty) == 1) |
287 | if (isastream (fd_tty) == 1) |
279 | # endif |
288 | # endif |
280 | { |
289 | { |
281 | D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
290 | D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules")); |
282 | ioctl (fd_tty, I_PUSH, "ptem"); |
291 | ioctl (fd_tty, I_PUSH, "ptem"); |
283 | ioctl (fd_tty, I_PUSH, "ldterm"); |
292 | ioctl (fd_tty, I_PUSH, "ldterm"); |
284 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
293 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
285 | } |
294 | } |
286 | #endif |
295 | #endif |
287 | /* ---------------------------------------- */ |
296 | /* ---------------------------------------- */ |
288 | # if defined(TIOCSCTTY) |
297 | # if defined(TIOCSCTTY) |
289 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
298 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
290 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
299 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd)); |
291 | # elif defined(TIOCSETCTTY) |
300 | # elif defined(TIOCSETCTTY) |
292 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
301 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
293 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
302 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd)); |
294 | # else |
303 | # else |
295 | fd = open (ttydev, O_RDWR); |
304 | fd = open (ttydev, O_RDWR); |
296 | D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
305 | D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK")); |
297 | if (fd >= 0) |
306 | if (fd >= 0) |
298 | close(fd); |
307 | close (fd); |
299 | # endif |
308 | # endif |
300 | /* ---------------------------------------- */ |
309 | /* ---------------------------------------- */ |
301 | fd = open ("/dev/tty", O_WRONLY); |
310 | fd = open ("/dev/tty", O_WRONLY); |
302 | D_TTY ((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
311 | D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
303 | if (fd < 0) |
312 | if (fd < 0) |
304 | return -1; /* fatal */ |
313 | return -1; /* fatal */ |
305 | close (fd); |
314 | close (fd); |
306 | /* ---------------------------------------- */ |
315 | /* ---------------------------------------- */ |
307 | D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
316 | D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ())); |
308 | /* ---------------------------------------- */ |
317 | /* ---------------------------------------- */ |
309 | #endif /* ! __QNX__ */ |
318 | #endif /* ! __QNX__ */ |
310 | |
319 | |
311 | return 0; |
320 | return 0; |
312 | } |
321 | } |