… | |
… | |
20 | * along with this program; if not, write to the Free Software |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 | *---------------------------------------------------------------------*/ |
22 | *---------------------------------------------------------------------*/ |
23 | |
23 | |
24 | #include "../config.h" /* NECESSARY */ |
24 | #include "../config.h" /* NECESSARY */ |
|
|
25 | #include "rxvt.h" |
25 | |
26 | |
26 | /* |
|
|
27 | * Try to be self-contained except for the above autoconfig'd defines |
|
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28 | */ |
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29 | |
|
|
30 | #if 0 |
|
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31 | #ifdef HAVE_GETPT |
|
|
32 | # define _GNU_SOURCE |
|
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33 | #endif |
|
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34 | #endif |
|
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35 | |
|
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36 | #include <cstdio> |
|
|
37 | #ifdef HAVE_STDLIB_H |
27 | #ifdef HAVE_STDLIB_H |
38 | # include <cstdlib> |
28 | # include <cstdlib> |
39 | #endif |
29 | #endif |
40 | #ifdef HAVE_SYS_TYPES_H |
30 | #ifdef HAVE_SYS_TYPES_H |
41 | # include <sys/types.h> |
31 | # include <sys/types.h> |
… | |
… | |
57 | #endif |
47 | #endif |
58 | #ifdef HAVE_ISASTREAM |
48 | #ifdef HAVE_ISASTREAM |
59 | # include <stropts.h> |
49 | # include <stropts.h> |
60 | #endif |
50 | #endif |
61 | |
51 | |
62 | #ifdef DEBUG_TTY |
52 | // better do this via configure, but.... |
63 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
53 | #if defined(__FreeBSD__) |
64 | #else |
54 | # include <libutil.h> |
65 | # define D_TTY(x) |
55 | #elif defined(__DARWIN__) || (defined (__MACH__) && defined (__APPLE__)) |
|
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56 | # include <util.h> |
66 | #endif |
57 | #endif |
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58 | |
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59 | #include <cstdio> |
|
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60 | #include <grp.h> |
67 | |
61 | |
68 | /* ------------------------------------------------------------------------- * |
62 | /* ------------------------------------------------------------------------- * |
69 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
63 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
70 | * ------------------------------------------------------------------------- */ |
64 | * ------------------------------------------------------------------------- */ |
71 | /* |
65 | /* |
72 | * Returns pty file descriptor, or -1 on failure |
66 | * Returns pty file descriptor, or -1 on failure |
73 | * If successful, ttydev is set to the name of the slave device. |
67 | * If successful, ttydev is set to the name of the slave device. |
74 | * fd_tty _may_ also be set to an open fd to the slave device |
68 | * fd_tty _may_ also be set to an open fd to the slave device |
75 | */ |
69 | */ |
76 | /* EXTPROTO */ |
70 | static int |
77 | int |
|
|
78 | rxvt_get_pty (int *fd_tty, const char **ttydev) |
71 | get_pty (int *fd_tty, char **ttydev) |
79 | { |
72 | { |
80 | int pfd; |
73 | int pfd; |
81 | |
74 | |
82 | #ifdef PTYS_ARE_OPENPTY |
75 | #ifdef PTYS_ARE_OPENPTY |
83 | |
|
|
84 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | char tty_name[sizeof "/dev/pts/????\0"]; |
85 | |
77 | |
86 | if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
78 | if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
87 | { |
79 | { |
88 | *ttydev = strdup (tty_name); |
80 | *ttydev = strdup (tty_name); |
… | |
… | |
113 | |
105 | |
114 | { |
106 | { |
115 | # ifdef PTYS_ARE_GETPT |
107 | # ifdef PTYS_ARE_GETPT |
116 | pfd = getpt (); |
108 | pfd = getpt (); |
117 | # else |
109 | # else |
118 | |
|
|
119 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
110 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
120 | # endif |
111 | # endif |
121 | |
112 | |
122 | if (pfd >= 0) |
113 | if (pfd >= 0) |
123 | { |
114 | { |
124 | if (grantpt (pfd) == 0 /* change slave permissions */ |
115 | if (grantpt (pfd) == 0 /* change slave permissions */ |
125 | && unlockpt (pfd) == 0) |
116 | && unlockpt (pfd) == 0) |
126 | { /* slave now unlocked */ |
117 | { /* slave now unlocked */ |
127 | *ttydev = ptsname (pfd); /* get slave's name */ |
118 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
128 | return pfd; |
119 | return pfd; |
129 | } |
120 | } |
130 | close (pfd); |
121 | close (pfd); |
131 | } |
122 | } |
132 | } |
123 | } |
… | |
… | |
134 | #endif |
125 | #endif |
135 | |
126 | |
136 | #ifdef PTYS_ARE_PTC |
127 | #ifdef PTYS_ARE_PTC |
137 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
128 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
138 | { |
129 | { |
139 | *ttydev = ttyname (pfd); |
130 | *ttydev = strdup (ttyname (pfd)); |
140 | return pfd; |
131 | return pfd; |
141 | } |
132 | } |
142 | #endif |
133 | #endif |
143 | |
134 | |
144 | #ifdef PTYS_ARE_CLONE |
135 | #ifdef PTYS_ARE_CLONE |
145 | 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) |
146 | { |
137 | { |
147 | *ttydev = ptsname (pfd); |
138 | *ttydev = strdup (ptsname (pfd)); |
148 | return pfd; |
139 | return pfd; |
149 | } |
140 | } |
150 | #endif |
141 | #endif |
151 | |
142 | |
152 | #ifdef PTYS_ARE_NUMERIC |
143 | #ifdef PTYS_ARE_NUMERIC |
153 | { |
144 | { |
154 | int idx; |
145 | int idx; |
155 | char *c1, *c2; |
146 | char *c1, *c2; |
156 | char pty_name[] = "/dev/ptyp???"; |
147 | char pty_name[] = "/dev/ptyp???"; |
157 | char tty_name[] = "/dev/ttyp???"; |
148 | char tty_name[] = "/dev/ttyp???"; |
158 | |
149 | |
159 | c1 = & (pty_name[sizeof (pty_name) - 4]); |
150 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
160 | c2 = & (tty_name[sizeof (tty_name) - 4]); |
151 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
161 | for (idx = 0; idx < 256; idx++) |
152 | for (idx = 0; idx < 256; idx++) |
162 | { |
153 | { |
163 | sprintf (c1, "%d", idx); |
154 | sprintf (c1, "%d", idx); |
164 | sprintf (c2, "%d", idx); |
155 | sprintf (c2, "%d", idx); |
165 | if (access (tty_name, F_OK) < 0) |
156 | if (access (tty_name, F_OK) < 0) |
166 | { |
157 | { |
167 | idx = 256; |
158 | idx = 256; |
168 | break; |
159 | break; |
169 | } |
160 | } |
|
|
161 | |
170 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
162 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
171 | { |
163 | { |
172 | if (access (tty_name, R_OK | W_OK) == 0) |
164 | if (access (tty_name, R_OK | W_OK) == 0) |
173 | { |
165 | { |
174 | *ttydev = strdup (tty_name); |
166 | *ttydev = strdup (tty_name); |
175 | return pfd; |
167 | return pfd; |
176 | } |
168 | } |
|
|
169 | |
177 | close (pfd); |
170 | close (pfd); |
178 | } |
171 | } |
179 | } |
172 | } |
180 | } |
173 | } |
181 | #endif |
174 | #endif |
|
|
175 | |
182 | #ifdef PTYS_ARE_SEARCHED |
176 | #ifdef PTYS_ARE_SEARCHED |
183 | { |
177 | { |
184 | const char *c1, *c2; |
178 | const char *c1, *c2; |
185 | char pty_name[] = "/dev/pty??"; |
179 | char pty_name[] = "/dev/pty??"; |
186 | char tty_name[] = "/dev/tty??"; |
180 | char tty_name[] = "/dev/tty??"; |
187 | |
181 | |
188 | # ifndef PTYCHAR1 |
182 | # ifndef PTYCHAR1 |
189 | # define PTYCHAR1 "pqrstuvwxyz" |
183 | # define PTYCHAR1 "pqrstuvwxyz" |
190 | # endif |
184 | # endif |
191 | # ifndef PTYCHAR2 |
185 | # ifndef PTYCHAR2 |
… | |
… | |
205 | if (access (tty_name, R_OK | W_OK) == 0) |
199 | if (access (tty_name, R_OK | W_OK) == 0) |
206 | { |
200 | { |
207 | *ttydev = strdup (tty_name); |
201 | *ttydev = strdup (tty_name); |
208 | return pfd; |
202 | return pfd; |
209 | } |
203 | } |
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204 | |
210 | close (pfd); |
205 | close (pfd); |
211 | } |
206 | } |
212 | } |
207 | } |
213 | } |
208 | } |
214 | } |
209 | } |
215 | #endif |
210 | #endif |
|
|
211 | |
216 | return -1; |
212 | return -1; |
217 | } |
213 | } |
218 | |
214 | |
219 | /*----------------------------------------------------------------------*/ |
215 | /*----------------------------------------------------------------------*/ |
220 | /* |
216 | /* |
221 | * Returns tty file descriptor, or -1 on failure |
217 | * Returns tty file descriptor, or -1 on failure |
222 | */ |
218 | */ |
223 | /* EXTPROTO */ |
219 | static int |
224 | int |
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225 | rxvt_get_tty (const char *ttydev) |
220 | get_tty (char *ttydev) |
226 | { |
221 | { |
227 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
222 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
228 | } |
223 | } |
229 | |
224 | |
230 | /*----------------------------------------------------------------------*/ |
225 | /*----------------------------------------------------------------------*/ |
231 | /* |
226 | /* |
232 | * Make our tty a controlling tty so that /dev/tty points to us |
227 | * Make our tty a controlling tty so that /dev/tty points to us |
233 | */ |
228 | */ |
234 | /* EXTPROTO */ |
229 | static int |
235 | int |
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236 | rxvt_control_tty (int fd_tty, const char *ttydev) |
230 | control_tty (int fd_tty, const char *ttydev) |
237 | { |
231 | { |
238 | #ifndef __QNX__ |
232 | #ifndef __QNX__ |
239 | int fd; |
233 | int fd; |
240 | |
234 | |
241 | D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev)); |
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242 | /* ---------------------------------------- */ |
235 | /* ---------------------------------------- */ |
243 | # ifdef HAVE_SETSID |
236 | # ifdef HAVE_SETSID |
244 | setsid (); |
237 | setsid (); |
245 | # endif |
238 | # endif |
246 | # if defined(HAVE_SETPGID) |
239 | # if defined(HAVE_SETPGID) |
247 | setpgid (0, 0); |
240 | setpgid (0, 0); |
248 | # elif defined(HAVE_SETPGRP) |
241 | # elif defined(HAVE_SETPGRP) |
249 | setpgrp (0, 0); |
242 | setpgrp (0, 0); |
250 | # endif |
243 | # endif |
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244 | |
251 | /* ---------------------------------------- */ |
245 | /* ---------------------------------------- */ |
252 | # ifdef TIOCNOTTY |
246 | # ifdef TIOCNOTTY |
253 | |
|
|
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
247 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
255 | D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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256 | if (fd >= 0) |
248 | if (fd >= 0) |
257 | { |
249 | { |
258 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
250 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
259 | close (fd); |
251 | close (fd); |
260 | } |
252 | } |
261 | # endif |
253 | # endif |
|
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254 | |
262 | /* ---------------------------------------- */ |
255 | /* ---------------------------------------- */ |
263 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
256 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
264 | D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
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265 | if (fd >= 0) |
257 | if (fd >= 0) |
266 | close (fd); /* ouch: still have controlling tty */ |
258 | close (fd); /* ouch: still have controlling tty */ |
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259 | |
267 | /* ---------------------------------------- */ |
260 | /* ---------------------------------------- */ |
268 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
261 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
269 | /* |
262 | /* |
270 | * Push STREAMS modules: |
263 | * Push STREAMS modules: |
271 | * ptem: pseudo-terminal hardware emulation module. |
264 | * ptem: pseudo-terminal hardware emulation module. |
… | |
… | |
285 | */ |
278 | */ |
286 | # ifdef HAVE_ISASTREAM |
279 | # ifdef HAVE_ISASTREAM |
287 | if (isastream (fd_tty) == 1) |
280 | if (isastream (fd_tty) == 1) |
288 | # endif |
281 | # endif |
289 | { |
282 | { |
290 | D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules")); |
|
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291 | ioctl (fd_tty, I_PUSH, "ptem"); |
283 | ioctl (fd_tty, I_PUSH, "ptem"); |
292 | ioctl (fd_tty, I_PUSH, "ldterm"); |
284 | ioctl (fd_tty, I_PUSH, "ldterm"); |
293 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
285 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
294 | } |
286 | } |
295 | #endif |
287 | #endif |
296 | /* ---------------------------------------- */ |
288 | /* ---------------------------------------- */ |
297 | # if defined(TIOCSCTTY) |
289 | # if defined(TIOCSCTTY) |
298 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
290 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
299 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd)); |
|
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300 | # elif defined(TIOCSETCTTY) |
291 | # elif defined(TIOCSETCTTY) |
301 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
292 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
302 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd)); |
|
|
303 | # else |
293 | # else |
304 | fd = open (ttydev, O_RDWR); |
294 | fd = open (ttydev, O_RDWR); |
305 | D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK")); |
|
|
306 | if (fd >= 0) |
295 | if (fd >= 0) |
307 | close (fd); |
296 | close (fd); |
308 | # endif |
297 | # endif |
309 | /* ---------------------------------------- */ |
298 | /* ---------------------------------------- */ |
310 | fd = open ("/dev/tty", O_WRONLY); |
299 | fd = open ("/dev/tty", O_WRONLY); |
311 | D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
|
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312 | if (fd < 0) |
300 | if (fd < 0) |
313 | return -1; /* fatal */ |
301 | return -1; /* fatal */ |
314 | close (fd); |
302 | close (fd); |
315 | /* ---------------------------------------- */ |
303 | /* ---------------------------------------- */ |
316 | D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ())); |
|
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317 | /* ---------------------------------------- */ |
|
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318 | #endif /* ! __QNX__ */ |
304 | #endif /* ! __QNX__ */ |
319 | |
305 | |
320 | return 0; |
306 | return 0; |
321 | } |
307 | } |
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308 | |
|
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309 | #ifndef NO_SETOWNER_TTYDEV |
|
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310 | static struct ttyconf { |
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311 | gid_t gid; |
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312 | mode_t mode; |
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313 | |
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314 | ttyconf () |
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315 | { |
|
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316 | #ifdef TTY_GID_SUPPORT |
|
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317 | struct group *gr = getgrnam ("tty"); |
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318 | |
|
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319 | if (gr) |
|
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320 | { /* change group ownership of tty to "tty" */ |
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321 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
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322 | gid = gr->gr_gid; |
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323 | } |
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324 | else |
|
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325 | #endif /* TTY_GID_SUPPORT */ |
|
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326 | { |
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327 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
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328 | gid = getgid (); |
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329 | } |
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330 | } |
|
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331 | } ttyconf; |
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332 | |
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333 | void |
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334 | rxvt_ptytty::privileges (rxvt_privaction action) |
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335 | { |
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336 | rxvt_privileges (RESTORE); |
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337 | |
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338 | if (action == SAVE) |
|
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339 | { |
|
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340 | //next_tty_action = RESTORE; |
|
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341 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
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342 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
|
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343 | if (lstat (name, &savestat) < 0) /* you lose out */ |
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344 | ;//next_tty_action = IGNORE; |
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345 | else |
|
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346 | # endif |
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347 | |
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348 | { |
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349 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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350 | chmod (name, ttyconf.mode); |
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351 | # ifdef HAVE_REVOKE |
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352 | revoke (name); |
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353 | # endif |
|
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354 | |
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355 | } |
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356 | } |
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357 | else |
|
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358 | { /* action == RESTORE */ |
|
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359 | //next_tty_action = IGNORE; |
|
|
360 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
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361 | chmod (name, savestat.st_mode); |
|
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362 | chown (name, savestat.st_uid, savestat.st_gid); |
|
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363 | # else |
|
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364 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
|
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365 | chown (name, 0, 0); |
|
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366 | # endif |
|
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367 | |
|
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368 | } |
|
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369 | |
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370 | rxvt_privileges (IGNORE); |
|
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371 | } |
|
|
372 | #endif |
|
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373 | |
|
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374 | rxvt_ptytty::rxvt_ptytty () |
|
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375 | { |
|
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376 | pty = tty = -1; |
|
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377 | name = 0; |
|
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378 | } |
|
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379 | |
|
|
380 | rxvt_ptytty::~rxvt_ptytty () |
|
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381 | { |
|
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382 | put (); |
|
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383 | } |
|
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384 | |
|
|
385 | void |
|
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386 | |
|
|
387 | rxvt_ptytty::close_tty () |
|
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388 | { |
|
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389 | if (tty >= 0) close (tty); |
|
|
390 | tty = -1; |
|
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391 | } |
|
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392 | |
|
|
393 | void |
|
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394 | rxvt_ptytty::put () |
|
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395 | { |
|
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396 | #ifndef NO_SETOWNER_TTYDEV |
|
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397 | if (tty >= 0) |
|
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398 | privileges (RESTORE); |
|
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399 | #endif |
|
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400 | |
|
|
401 | if (pty >= 0) close (pty); |
|
|
402 | close_tty (); |
|
|
403 | free (name); |
|
|
404 | |
|
|
405 | pty = tty = -1; |
|
|
406 | name = 0; |
|
|
407 | } |
|
|
408 | |
|
|
409 | bool |
|
|
410 | rxvt_ptytty::make_controlling_tty () |
|
|
411 | { |
|
|
412 | return control_tty (tty, name) >= 0; |
|
|
413 | } |
|
|
414 | |
|
|
415 | bool |
|
|
416 | rxvt_ptytty::get () |
|
|
417 | { |
|
|
418 | /* get master (pty) */ |
|
|
419 | if ((pty = get_pty (&tty, &name)) < 0) |
|
|
420 | return false; |
|
|
421 | |
|
|
422 | fcntl (pty, F_SETFL, O_NONBLOCK); |
|
|
423 | |
|
|
424 | /* get slave (tty) */ |
|
|
425 | if (tty < 0) |
|
|
426 | { |
|
|
427 | #ifndef NO_SETOWNER_TTYDEV |
|
|
428 | privileges (SAVE); |
|
|
429 | #endif |
|
|
430 | |
|
|
431 | if ((tty = get_tty (name)) < 0) |
|
|
432 | { |
|
|
433 | put (); |
|
|
434 | return false; |
|
|
435 | } |
|
|
436 | } |
|
|
437 | |
|
|
438 | return true; |
|
|
439 | } |
|
|
440 | |
322 | /*----------------------- end-of-file (C source) -----------------------*/ |
441 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
442 | |