1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
2 | * File: ptytty.c |
2 | * File: ptytty.c |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * $Id: ptytty.C,v 1.3 2003/11/25 15:25:17 pcg Exp $ |
4 | * $Id: ptytty.C,v 1.4 2003/12/02 21:49:46 pcg Exp $ |
5 | * |
5 | * |
6 | * All portions of code are copyright by their respective author/s. |
6 | * All portions of code are copyright by their respective author/s. |
7 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
7 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.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 |
… | |
… | |
48 | #endif |
48 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
51 | #endif |
51 | #endif |
52 | |
52 | |
53 | |
|
|
54 | #ifdef DEBUG_TTY |
53 | #ifdef DEBUG_TTY |
55 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
54 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
56 | #else |
55 | #else |
57 | # define D_TTY(x) |
56 | # define D_TTY(x) |
58 | #endif |
57 | #endif |
… | |
… | |
67 | */ |
66 | */ |
68 | /* EXTPROTO */ |
67 | /* EXTPROTO */ |
69 | int |
68 | int |
70 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
69 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
71 | { |
70 | { |
72 | int pfd; |
71 | int pfd; |
73 | |
72 | |
74 | #ifdef PTYS_ARE_OPENPTY |
73 | #ifdef PTYS_ARE_OPENPTY |
|
|
74 | |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | |
76 | |
77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) { |
77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
|
|
78 | { |
78 | *ttydev = strdup(tty_name); |
79 | *ttydev = strdup(tty_name); |
79 | return pfd; |
80 | return pfd; |
80 | } |
81 | } |
81 | #endif |
82 | #endif |
82 | |
83 | |
83 | #ifdef PTYS_ARE__GETPTY |
84 | #ifdef PTYS_ARE__GETPTY |
84 | *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
85 | *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
85 | if (*ttydev != NULL) |
86 | if (*ttydev != NULL) |
86 | return pfd; |
87 | return pfd; |
87 | #endif |
88 | #endif |
88 | |
89 | |
89 | #ifdef PTYS_ARE_GETPTY |
90 | #ifdef PTYS_ARE_GETPTY |
|
|
91 | |
90 | char *ptydev; |
92 | char *ptydev; |
91 | |
93 | |
92 | while ((ptydev = getpty()) != NULL) |
94 | while ((ptydev = getpty()) != NULL) |
93 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) { |
95 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
96 | { |
94 | *ttydev = ptydev; |
97 | *ttydev = ptydev; |
95 | return pfd; |
98 | return pfd; |
96 | } |
99 | } |
97 | #endif |
100 | #endif |
98 | |
101 | |
99 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
102 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
100 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
103 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
|
|
104 | |
101 | { |
105 | { |
102 | # ifdef PTYS_ARE_GETPT |
106 | # ifdef PTYS_ARE_GETPT |
103 | pfd = getpt(); |
107 | pfd = getpt(); |
104 | # else |
108 | # else |
|
|
109 | |
105 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
110 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
106 | # endif |
111 | # endif |
|
|
112 | |
107 | if (pfd >= 0) { |
113 | if (pfd >= 0) |
|
|
114 | { |
108 | if (grantpt(pfd) == 0 /* change slave permissions */ |
115 | if (grantpt(pfd) == 0 /* change slave permissions */ |
109 | && unlockpt(pfd) == 0) { /* slave now unlocked */ |
116 | && unlockpt(pfd) == 0) |
|
|
117 | { /* slave now unlocked */ |
110 | *ttydev = ptsname(pfd); /* get slave's name */ |
118 | *ttydev = ptsname(pfd); /* get slave's name */ |
111 | return pfd; |
119 | return pfd; |
112 | } |
120 | } |
113 | close(pfd); |
121 | close(pfd); |
114 | } |
|
|
115 | } |
122 | } |
|
|
123 | } |
116 | # endif |
124 | # endif |
117 | #endif |
125 | #endif |
118 | |
126 | |
119 | #ifdef PTYS_ARE_PTC |
127 | #ifdef PTYS_ARE_PTC |
120 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { |
128 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
129 | { |
121 | *ttydev = ttyname(pfd); |
130 | *ttydev = ttyname(pfd); |
122 | return pfd; |
131 | return pfd; |
123 | } |
132 | } |
124 | #endif |
133 | #endif |
125 | |
134 | |
126 | #ifdef PTYS_ARE_CLONE |
135 | #ifdef PTYS_ARE_CLONE |
127 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) { |
136 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
137 | { |
128 | *ttydev = ptsname(pfd); |
138 | *ttydev = ptsname(pfd); |
129 | return pfd; |
139 | return pfd; |
130 | } |
140 | } |
131 | #endif |
141 | #endif |
132 | |
142 | |
133 | #ifdef PTYS_ARE_NUMERIC |
143 | #ifdef PTYS_ARE_NUMERIC |
134 | { |
144 | { |
135 | int idx; |
145 | int idx; |
136 | char *c1, *c2; |
146 | char *c1, *c2; |
137 | char pty_name[] = "/dev/ptyp???"; |
147 | char pty_name[] = "/dev/ptyp???"; |
138 | char tty_name[] = "/dev/ttyp???"; |
148 | char tty_name[] = "/dev/ttyp???"; |
139 | |
149 | |
140 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
150 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
141 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
151 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
142 | for (idx = 0; idx < 256; idx++) { |
152 | for (idx = 0; idx < 256; idx++) |
|
|
153 | { |
143 | sprintf(c1, "%d", idx); |
154 | sprintf(c1, "%d", idx); |
144 | sprintf(c2, "%d", idx); |
155 | sprintf(c2, "%d", idx); |
145 | if (access(tty_name, F_OK) < 0) { |
156 | if (access(tty_name, F_OK) < 0) |
146 | idx = 256; |
157 | { |
147 | break; |
158 | idx = 256; |
148 | } |
159 | break; |
|
|
160 | } |
149 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
161 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
162 | { |
150 | if (access(tty_name, R_OK | W_OK) == 0) { |
163 | if (access(tty_name, R_OK | W_OK) == 0) |
|
|
164 | { |
151 | *ttydev = strdup(tty_name); |
165 | *ttydev = strdup(tty_name); |
152 | return pfd; |
166 | return pfd; |
153 | } |
167 | } |
154 | close(pfd); |
168 | close(pfd); |
155 | } |
169 | } |
156 | } |
|
|
157 | } |
170 | } |
|
|
171 | } |
158 | #endif |
172 | #endif |
159 | #ifdef PTYS_ARE_SEARCHED |
173 | #ifdef PTYS_ARE_SEARCHED |
160 | { |
174 | { |
161 | const char *c1, *c2; |
175 | const char *c1, *c2; |
162 | char pty_name[] = "/dev/pty??"; |
176 | char pty_name[] = "/dev/pty??"; |
163 | char tty_name[] = "/dev/tty??"; |
177 | char tty_name[] = "/dev/tty??"; |
164 | |
178 | |
165 | # ifndef PTYCHAR1 |
179 | # ifndef PTYCHAR1 |
166 | # define PTYCHAR1 "pqrstuvwxyz" |
180 | # define PTYCHAR1 "pqrstuvwxyz" |
167 | # endif |
181 | # endif |
168 | # ifndef PTYCHAR2 |
182 | # ifndef PTYCHAR2 |
169 | # define PTYCHAR2 "0123456789abcdef" |
183 | # define PTYCHAR2 "0123456789abcdef" |
170 | # endif |
184 | # endif |
|
|
185 | |
171 | for (c1 = PTYCHAR1; *c1; c1++) { |
186 | for (c1 = PTYCHAR1; *c1; c1++) |
|
|
187 | { |
172 | pty_name[(sizeof(pty_name) - 3)] = |
188 | pty_name[(sizeof(pty_name) - 3)] = |
173 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
189 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
174 | for (c2 = PTYCHAR2; *c2; c2++) { |
190 | for (c2 = PTYCHAR2; *c2; c2++) |
|
|
191 | { |
175 | pty_name[(sizeof(pty_name) - 2)] = |
192 | pty_name[(sizeof(pty_name) - 2)] = |
176 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
193 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
177 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
194 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
195 | { |
178 | if (access(tty_name, R_OK | W_OK) == 0) { |
196 | if (access(tty_name, R_OK | W_OK) == 0) |
179 | *ttydev = strdup(tty_name); |
197 | { |
180 | return pfd; |
198 | *ttydev = strdup(tty_name); |
181 | } |
199 | return pfd; |
182 | close(pfd); |
200 | } |
183 | } |
201 | close(pfd); |
184 | } |
202 | } |
185 | } |
203 | } |
186 | } |
204 | } |
|
|
205 | } |
187 | #endif |
206 | #endif |
188 | return -1; |
207 | return -1; |
189 | } |
208 | } |
190 | |
209 | |
191 | /*----------------------------------------------------------------------*/ |
210 | /*----------------------------------------------------------------------*/ |
192 | /* |
211 | /* |
193 | * Returns tty file descriptor, or -1 on failure |
212 | * Returns tty file descriptor, or -1 on failure |
194 | */ |
213 | */ |
195 | /* EXTPROTO */ |
214 | /* EXTPROTO */ |
196 | int |
215 | int |
197 | rxvt_get_tty(const char *ttydev) |
216 | rxvt_get_tty (const char *ttydev) |
198 | { |
217 | { |
199 | return open(ttydev, O_RDWR | O_NOCTTY, 0); |
218 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
200 | } |
219 | } |
201 | |
220 | |
202 | /*----------------------------------------------------------------------*/ |
221 | /*----------------------------------------------------------------------*/ |
203 | /* |
222 | /* |
204 | * Make our tty a controlling tty so that /dev/tty points to us |
223 | * Make our tty a controlling tty so that /dev/tty points to us |
205 | */ |
224 | */ |
206 | /* EXTPROTO */ |
225 | /* EXTPROTO */ |
207 | int |
226 | int |
208 | rxvt_control_tty(int fd_tty, const char *ttydev) |
227 | rxvt_control_tty (int fd_tty, const char *ttydev) |
209 | { |
228 | { |
210 | #ifndef __QNX__ |
229 | #ifndef __QNX__ |
211 | int fd; |
230 | int fd; |
212 | |
231 | |
213 | D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
232 | D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
214 | /* ---------------------------------------- */ |
233 | /* ---------------------------------------- */ |
215 | # ifdef HAVE_SETSID |
234 | # ifdef HAVE_SETSID |
216 | setsid(); |
235 | setsid (); |
217 | # endif |
236 | # endif |
218 | # if defined(HAVE_SETPGID) |
237 | # if defined(HAVE_SETPGID) |
219 | setpgid(0, 0); |
238 | setpgid (0, 0); |
220 | # elif defined(HAVE_SETPGRP) |
239 | # elif defined(HAVE_SETPGRP) |
221 | setpgrp(0, 0); |
240 | setpgrp (0, 0); |
222 | # endif |
241 | # endif |
223 | /* ---------------------------------------- */ |
242 | /* ---------------------------------------- */ |
224 | # ifdef TIOCNOTTY |
243 | # ifdef TIOCNOTTY |
|
|
244 | |
225 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
245 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
226 | D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
246 | D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
227 | if (fd >= 0) { |
247 | if (fd >= 0) |
|
|
248 | { |
228 | ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */ |
249 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
229 | close(fd); |
250 | close (fd); |
230 | } |
251 | } |
231 | # endif |
252 | # endif |
232 | /* ---------------------------------------- */ |
253 | /* ---------------------------------------- */ |
233 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
234 | D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
255 | D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
235 | if (fd >= 0) |
256 | if (fd >= 0) |
236 | close(fd); /* ouch: still have controlling tty */ |
257 | close (fd); /* ouch: still have controlling tty */ |
237 | /* ---------------------------------------- */ |
258 | /* ---------------------------------------- */ |
238 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
259 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
239 | /* |
260 | /* |
240 | * Push STREAMS modules: |
261 | * Push STREAMS modules: |
241 | * ptem: pseudo-terminal hardware emulation module. |
262 | * ptem: pseudo-terminal hardware emulation module. |
242 | * ldterm: standard terminal line discipline. |
263 | * ldterm: standard terminal line discipline. |
243 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
264 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
244 | * |
265 | * |
245 | * After we push the STREAMS modules, the first open() on the slave side |
266 | * After we push the STREAMS modules, the first open() on the slave side |
246 | * (i.e. the next section between the dashes giving us "tty opened OK") |
267 | * (i.e. the next section between the dashes giving us "tty opened OK") |
247 | * should make the "ptem" (or "ldterm" depending upon either which OS |
268 | * should make the "ptem" (or "ldterm" depending upon either which OS |
248 | * version or which set of manual pages you have) module give us a |
269 | * version or which set of manual pages you have) module give us a |
249 | * controlling terminal. We must already have close()d the master side |
270 | * controlling terminal. We must already have close()d the master side |
250 | * fd in this child process before we push STREAMS modules on because the |
271 | * fd in this child process before we push STREAMS modules on because the |
251 | * documentation is really unclear about whether it is any close() on |
272 | * documentation is really unclear about whether it is any close() on |
252 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
273 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
253 | * close() - on the master side which causes a hang up to be sent |
274 | * close() - on the master side which causes a hang up to be sent |
254 | * through - Geoff Wing |
275 | * through - Geoff Wing |
255 | */ |
276 | */ |
256 | # ifdef HAVE_ISASTREAM |
277 | # ifdef HAVE_ISASTREAM |
257 | if (isastream(fd_tty) == 1) |
278 | if (isastream (fd_tty) == 1) |
258 | # endif |
279 | # endif |
259 | { |
280 | { |
260 | D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
281 | D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
261 | ioctl(fd_tty, I_PUSH, "ptem"); |
282 | ioctl (fd_tty, I_PUSH, "ptem"); |
262 | ioctl(fd_tty, I_PUSH, "ldterm"); |
283 | ioctl (fd_tty, I_PUSH, "ldterm"); |
263 | ioctl(fd_tty, I_PUSH, "ttcompat"); |
284 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
264 | } |
285 | } |
265 | #endif |
286 | #endif |
266 | /* ---------------------------------------- */ |
287 | /* ---------------------------------------- */ |
267 | # if defined(TIOCSCTTY) |
288 | # if defined(TIOCSCTTY) |
268 | fd = ioctl(fd_tty, TIOCSCTTY, NULL); |
289 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
269 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
290 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
270 | # elif defined(TIOCSETCTTY) |
291 | # elif defined(TIOCSETCTTY) |
271 | fd = ioctl(fd_tty, TIOCSETCTTY, NULL); |
292 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
272 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
293 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
273 | # else |
294 | # else |
274 | fd = open(ttydev, O_RDWR); |
295 | fd = open (ttydev, O_RDWR); |
275 | D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
296 | D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
276 | if (fd >= 0) |
297 | if (fd >= 0) |
277 | close(fd); |
|
|
278 | # endif |
|
|
279 | /* ---------------------------------------- */ |
|
|
280 | fd = open("/dev/tty", O_WRONLY); |
|
|
281 | D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
|
|
282 | if (fd < 0) |
|
|
283 | return -1; /* fatal */ |
|
|
284 | close(fd); |
298 | close(fd); |
|
|
299 | # endif |
285 | /* ---------------------------------------- */ |
300 | /* ---------------------------------------- */ |
|
|
301 | 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)")); |
|
|
303 | if (fd < 0) |
|
|
304 | return -1; /* fatal */ |
|
|
305 | close (fd); |
|
|
306 | /* ---------------------------------------- */ |
286 | D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
307 | D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
287 | /* ---------------------------------------- */ |
308 | /* ---------------------------------------- */ |
288 | #endif /* ! __QNX__ */ |
309 | #endif /* ! __QNX__ */ |
|
|
310 | |
289 | return 0; |
311 | return 0; |
290 | } |
312 | } |
291 | /*----------------------- end-of-file (C source) -----------------------*/ |
313 | /*----------------------- end-of-file (C source) -----------------------*/ |