… | |
… | |
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 | |
|
|
26 | #include "fdpass.h" |
25 | #include "rxvt.h" |
27 | #include "ptytty.h" |
26 | |
28 | |
27 | # include <cstdlib> |
29 | #include <cstdlib> |
28 | # include <cstring> |
30 | #include <cstring> |
29 | |
31 | |
30 | #ifdef HAVE_SYS_TYPES_H |
|
|
31 | # include <sys/types.h> |
32 | #include <sys/types.h> |
32 | #endif |
33 | #include <sys/socket.h> |
33 | #ifdef HAVE_UNISTD_H |
|
|
34 | # include <unistd.h> |
34 | #include <unistd.h> |
35 | #endif |
|
|
36 | #ifdef HAVE_FCNTL_H |
|
|
37 | # include <fcntl.h> |
35 | #include <fcntl.h> |
38 | #endif |
36 | |
39 | #ifdef HAVE_SYS_IOCTL_H |
37 | #ifdef HAVE_SYS_IOCTL_H |
40 | # include <sys/ioctl.h> |
38 | # include <sys/ioctl.h> |
41 | #endif |
39 | #endif |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
40 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
41 | # include <sys/stropts.h> /* for I_PUSH */ |
44 | #endif |
42 | #endif |
45 | #ifdef HAVE_ISASTREAM |
43 | #ifdef HAVE_ISASTREAM |
46 | # include <stropts.h> |
44 | # include <stropts.h> |
47 | #endif |
45 | #endif |
… | |
… | |
50 | #elif defined(HAVE_LIBUTIL_H) |
48 | #elif defined(HAVE_LIBUTIL_H) |
51 | # include <libutil.h> |
49 | # include <libutil.h> |
52 | #elif defined(HAVE_UTIL_H) |
50 | #elif defined(HAVE_UTIL_H) |
53 | # include <util.h> |
51 | # include <util.h> |
54 | #endif |
52 | #endif |
|
|
53 | #ifdef TTY_GID_SUPPORT |
|
|
54 | #include <grp.h> |
|
|
55 | #endif |
55 | |
56 | |
56 | #include <cstdio> |
57 | #include <cstdio> |
57 | #include <grp.h> |
|
|
58 | |
58 | |
59 | ///////////////////////////////////////////////////////////////////////////// |
59 | ///////////////////////////////////////////////////////////////////////////// |
60 | |
60 | |
61 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
… | |
… | |
64 | /* |
64 | /* |
65 | * Returns pty file descriptor, or -1 on failure |
65 | * Returns pty file descriptor, or -1 on failure |
66 | * If successful, ttydev is set to the name of the slave device. |
66 | * If successful, ttydev is set to the name of the slave device. |
67 | * fd_tty _may_ also be set to an open fd to the slave device |
67 | * fd_tty _may_ also be set to an open fd to the slave device |
68 | */ |
68 | */ |
|
|
69 | #if defined(UNIX98_PTY) |
69 | static int |
70 | static int |
70 | get_pty (int *fd_tty, char **ttydev) |
71 | get_pty (int *fd_tty, char **ttydev) |
71 | { |
72 | { |
72 | int pfd; |
73 | int pfd; |
73 | |
74 | |
74 | #ifdef PTYS_ARE_OPENPTY |
75 | # if defined(HAVE_GETPT) |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | pfd = getpt(); |
|
|
77 | # elif defined(HAVE_POSIX_OPENPT) |
|
|
78 | pfd = posix_openpt (O_RDWR); |
|
|
79 | # else |
|
|
80 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
|
|
81 | # endif |
|
|
82 | if (pfd >= 0) |
|
|
83 | { |
|
|
84 | if (grantpt (pfd) == 0 /* change slave permissions */ |
|
|
85 | && unlockpt (pfd) == 0) |
|
|
86 | { /* slave now unlocked */ |
|
|
87 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
|
|
88 | return pfd; |
|
|
89 | } |
76 | |
90 | |
77 | rxvt_privileges(RESTORE); |
91 | close (pfd); |
|
|
92 | } |
|
|
93 | |
|
|
94 | return -1; |
|
|
95 | } |
|
|
96 | #elif defined(HAVE_OPENPTY) |
|
|
97 | static int |
|
|
98 | get_pty (int *fd_tty, char **ttydev) |
|
|
99 | { |
|
|
100 | int pfd; |
|
|
101 | int res; |
|
|
102 | char tty_name[32]; |
|
|
103 | |
78 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
104 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
79 | rxvt_privileges(IGNORE); |
|
|
80 | |
|
|
81 | if (res != -1) |
105 | if (res != -1) |
82 | { |
106 | { |
83 | *ttydev = strdup (tty_name); |
107 | *ttydev = strdup (tty_name); |
84 | return pfd; |
108 | return pfd; |
85 | } |
109 | } |
86 | #endif |
|
|
87 | |
110 | |
88 | #ifdef PTYS_ARE__GETPTY |
111 | return -1; |
|
|
112 | } |
|
|
113 | #elif defined(HAVE__GETPTY) |
|
|
114 | static int |
|
|
115 | get_pty (int *fd_tty, char **ttydev) |
|
|
116 | { |
|
|
117 | int pfd; |
|
|
118 | |
89 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
119 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
90 | if (*ttydev != NULL) |
120 | if (*ttydev != NULL) |
91 | return pfd; |
121 | return pfd; |
92 | #endif |
|
|
93 | |
122 | |
94 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
123 | return -1; |
95 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
124 | } |
|
|
125 | #elif defined(HAVE_DEV_PTC) |
|
|
126 | static int |
|
|
127 | get_pty (int *fd_tty, char **ttydev) |
|
|
128 | { |
|
|
129 | int pfd; |
96 | |
130 | |
97 | { |
|
|
98 | # ifdef PTYS_ARE_GETPT |
|
|
99 | pfd = getpt(); |
|
|
100 | # else |
|
|
101 | # ifdef PTYS_ARE_POSIX |
|
|
102 | pfd = posix_openpt (O_RDWR); |
|
|
103 | # else |
|
|
104 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
|
|
105 | # endif |
|
|
106 | # endif |
|
|
107 | |
|
|
108 | if (pfd >= 0) |
|
|
109 | { |
|
|
110 | if (grantpt (pfd) == 0 /* change slave permissions */ |
|
|
111 | && unlockpt (pfd) == 0) |
|
|
112 | { /* slave now unlocked */ |
|
|
113 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
|
|
114 | return pfd; |
|
|
115 | } |
|
|
116 | close (pfd); |
|
|
117 | } |
|
|
118 | } |
|
|
119 | # endif |
|
|
120 | #endif |
|
|
121 | |
|
|
122 | #ifdef PTYS_ARE_PTC |
|
|
123 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
131 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
124 | { |
132 | { |
125 | *ttydev = strdup (ttyname (pfd)); |
133 | *ttydev = strdup (ttyname (pfd)); |
126 | return pfd; |
134 | return pfd; |
127 | } |
135 | } |
128 | #endif |
|
|
129 | |
136 | |
130 | #ifdef PTYS_ARE_CLONE |
137 | return -1; |
|
|
138 | } |
|
|
139 | #elif defined(HAVE_DEV_CLONE) |
|
|
140 | static int |
|
|
141 | get_pty (int *fd_tty, char **ttydev) |
|
|
142 | { |
|
|
143 | int pfd; |
|
|
144 | |
131 | 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) |
132 | { |
146 | { |
133 | *ttydev = strdup (ptsname (pfd)); |
147 | *ttydev = strdup (ptsname (pfd)); |
134 | return pfd; |
148 | return pfd; |
135 | } |
149 | } |
136 | #endif |
|
|
137 | |
|
|
138 | #ifdef PTYS_ARE_NUMERIC |
|
|
139 | { |
|
|
140 | int idx; |
|
|
141 | char *c1, *c2; |
|
|
142 | char pty_name[] = "/dev/ptyp???"; |
|
|
143 | char tty_name[] = "/dev/ttyp???"; |
|
|
144 | |
|
|
145 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
|
|
146 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
|
|
147 | for (idx = 0; idx < 256; idx++) |
|
|
148 | { |
|
|
149 | sprintf (c1, "%d", idx); |
|
|
150 | sprintf (c2, "%d", idx); |
|
|
151 | if (access (tty_name, F_OK) < 0) |
|
|
152 | { |
|
|
153 | idx = 256; |
|
|
154 | break; |
|
|
155 | } |
|
|
156 | |
|
|
157 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
158 | { |
|
|
159 | if (access (tty_name, R_OK | W_OK) == 0) |
|
|
160 | { |
|
|
161 | *ttydev = strdup (tty_name); |
|
|
162 | return pfd; |
|
|
163 | } |
|
|
164 | |
|
|
165 | close (pfd); |
|
|
166 | } |
|
|
167 | } |
|
|
168 | } |
|
|
169 | #endif |
|
|
170 | |
|
|
171 | #ifdef PTYS_ARE_SEARCHED |
|
|
172 | { |
|
|
173 | const char *c1, *c2; |
|
|
174 | char pty_name[] = "/dev/pty??"; |
|
|
175 | char tty_name[] = "/dev/tty??"; |
|
|
176 | |
|
|
177 | # ifndef PTYCHAR1 |
|
|
178 | # define PTYCHAR1 "pqrstuvwxyz" |
|
|
179 | # endif |
|
|
180 | # ifndef PTYCHAR2 |
|
|
181 | # define PTYCHAR2 "0123456789abcdef" |
|
|
182 | # endif |
|
|
183 | |
|
|
184 | for (c1 = PTYCHAR1; *c1; c1++) |
|
|
185 | { |
|
|
186 | pty_name[ (sizeof (pty_name) - 3)] = |
|
|
187 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
|
|
188 | for (c2 = PTYCHAR2; *c2; c2++) |
|
|
189 | { |
|
|
190 | pty_name[ (sizeof (pty_name) - 2)] = |
|
|
191 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
|
|
192 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
193 | { |
|
|
194 | if (access (tty_name, R_OK | W_OK) == 0) |
|
|
195 | { |
|
|
196 | *ttydev = strdup (tty_name); |
|
|
197 | return pfd; |
|
|
198 | } |
|
|
199 | |
|
|
200 | close (pfd); |
|
|
201 | } |
|
|
202 | } |
|
|
203 | } |
|
|
204 | } |
|
|
205 | #endif |
|
|
206 | |
150 | |
207 | return -1; |
151 | return -1; |
208 | } |
152 | } |
|
|
153 | #else |
|
|
154 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
|
|
155 | static int |
|
|
156 | get_pty (int *fd_tty, char **ttydev) |
|
|
157 | { |
|
|
158 | int pfd; |
|
|
159 | int i; |
|
|
160 | char pty_name[32]; |
|
|
161 | char tty_name[32]; |
|
|
162 | const char *majors = "pqrstuvwxyzabcde"; |
|
|
163 | const char *minors = "0123456789abcdef"; |
|
|
164 | for (i = 0; i < 256; i++) |
|
|
165 | { |
|
|
166 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
|
|
167 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
|
|
168 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
|
|
169 | { |
|
|
170 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
|
|
171 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
|
|
172 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
|
|
173 | continue; |
|
|
174 | } |
|
|
175 | if (access (tty_name, R_OK | W_OK) == 0) |
|
|
176 | { |
|
|
177 | *ttydev = strdup (tty_name); |
|
|
178 | return pfd; |
|
|
179 | } |
|
|
180 | |
|
|
181 | close (pfd); |
|
|
182 | } |
|
|
183 | } |
|
|
184 | #endif |
209 | |
185 | |
210 | /*----------------------------------------------------------------------*/ |
186 | /*----------------------------------------------------------------------*/ |
211 | /* |
187 | /* |
212 | * Returns tty file descriptor, or -1 on failure |
188 | * Returns tty file descriptor, or -1 on failure |
213 | */ |
189 | */ |
… | |
… | |
222 | * Make our tty a controlling tty so that /dev/tty points to us |
198 | * Make our tty a controlling tty so that /dev/tty points to us |
223 | */ |
199 | */ |
224 | static int |
200 | static int |
225 | control_tty (int fd_tty) |
201 | control_tty (int fd_tty) |
226 | { |
202 | { |
227 | #ifndef __QNX__ |
|
|
228 | int fd; |
|
|
229 | |
|
|
230 | /* ---------------------------------------- */ |
|
|
231 | # ifdef HAVE_SETSID |
|
|
232 | setsid (); |
203 | setsid (); |
233 | # endif |
|
|
234 | # if defined(HAVE_SETPGID) |
|
|
235 | setpgid (0, 0); |
|
|
236 | # elif defined(HAVE_SETPGRP) |
|
|
237 | setpgrp (0, 0); |
|
|
238 | # endif |
|
|
239 | |
204 | |
240 | /* ---------------------------------------- */ |
|
|
241 | # ifdef TIOCNOTTY |
|
|
242 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
|
|
243 | if (fd >= 0) |
|
|
244 | { |
|
|
245 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
|
|
246 | close (fd); |
|
|
247 | } |
|
|
248 | # endif |
|
|
249 | |
|
|
250 | /* ---------------------------------------- */ |
|
|
251 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
|
|
252 | if (fd >= 0) |
|
|
253 | close (fd); /* ouch: still have controlling tty */ |
|
|
254 | |
|
|
255 | /* ---------------------------------------- */ |
|
|
256 | # if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
205 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
257 | /* |
206 | /* |
258 | * Push STREAMS modules: |
207 | * Push STREAMS modules: |
259 | * ptem: pseudo-terminal hardware emulation module. |
208 | * ptem: pseudo-terminal hardware emulation module. |
260 | * ldterm: standard terminal line discipline. |
209 | * ldterm: standard terminal line discipline. |
261 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
210 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
… | |
… | |
269 | * documentation is really unclear about whether it is any close () on |
218 | * documentation is really unclear about whether it is any close () on |
270 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
219 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
271 | * close () - on the master side which causes a hang up to be sent |
220 | * close () - on the master side which causes a hang up to be sent |
272 | * through - Geoff Wing |
221 | * through - Geoff Wing |
273 | */ |
222 | */ |
274 | # ifdef HAVE_ISASTREAM |
223 | # ifdef HAVE_ISASTREAM |
275 | if (isastream (fd_tty) == 1) |
224 | if (isastream (fd_tty) == 1) |
276 | # endif |
225 | # endif |
277 | { |
226 | { |
278 | ioctl (fd_tty, I_PUSH, "ptem"); |
227 | ioctl (fd_tty, I_PUSH, "ptem"); |
279 | ioctl (fd_tty, I_PUSH, "ldterm"); |
228 | ioctl (fd_tty, I_PUSH, "ldterm"); |
280 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
229 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
281 | } |
230 | } |
282 | # endif |
231 | #endif |
283 | /* ---------------------------------------- */ |
232 | |
284 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
233 | ioctl (fd_tty, TIOCSCTTY, NULL); |
285 | /* ---------------------------------------- */ |
234 | |
286 | fd = open ("/dev/tty", O_WRONLY); |
235 | int fd = open ("/dev/tty", O_WRONLY); |
287 | if (fd < 0) |
236 | if (fd < 0) |
288 | return -1; /* fatal */ |
237 | return -1; /* fatal */ |
|
|
238 | |
289 | close (fd); |
239 | close (fd); |
290 | /* ---------------------------------------- */ |
|
|
291 | #endif /* ! __QNX__ */ |
|
|
292 | |
240 | |
293 | return 0; |
241 | return 0; |
294 | } |
242 | } |
295 | |
243 | |
296 | void |
244 | void |
297 | rxvt_ptytty::close_tty () |
245 | ptytty::close_tty () |
298 | { |
246 | { |
299 | if (tty < 0) |
247 | if (tty < 0) |
300 | return; |
248 | return; |
301 | |
249 | |
302 | close (tty); |
250 | close (tty); |
303 | tty = -1; |
251 | tty = -1; |
304 | } |
252 | } |
305 | |
253 | |
306 | bool |
254 | bool |
307 | rxvt_ptytty::make_controlling_tty () |
255 | ptytty::make_controlling_tty () |
308 | { |
256 | { |
309 | return control_tty (tty) >= 0; |
257 | return control_tty (tty) >= 0; |
310 | } |
258 | } |
311 | |
259 | |
312 | void |
260 | void |
313 | rxvt_ptytty::set_utf8_mode (bool on) |
261 | ptytty::set_utf8_mode (bool on) |
314 | { |
262 | { |
315 | #ifdef IUTF8 |
263 | #ifdef IUTF8 |
316 | if (pty < 0) |
264 | if (pty < 0) |
317 | return; |
265 | return; |
318 | |
266 | |
… | |
… | |
334 | } |
282 | } |
335 | } |
283 | } |
336 | #endif |
284 | #endif |
337 | } |
285 | } |
338 | |
286 | |
339 | ///////////////////////////////////////////////////////////////////////////// |
|
|
340 | |
|
|
341 | #ifndef NO_SETOWNER_TTYDEV |
|
|
342 | static struct ttyconf { |
287 | static struct ttyconf { |
343 | gid_t gid; |
288 | gid_t gid; |
344 | mode_t mode; |
289 | mode_t mode; |
345 | |
290 | |
346 | ttyconf () |
291 | ttyconf () |
… | |
… | |
355 | } |
300 | } |
356 | else |
301 | else |
357 | #endif /* TTY_GID_SUPPORT */ |
302 | #endif /* TTY_GID_SUPPORT */ |
358 | { |
303 | { |
359 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
304 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
360 | gid = getgid (); |
305 | gid = 0; |
361 | } |
306 | } |
362 | } |
307 | } |
363 | } ttyconf; |
308 | } ttyconf; |
364 | |
309 | |
365 | ///////////////////////////////////////////////////////////////////////////// |
310 | ptytty_unix::ptytty_unix () |
|
|
311 | { |
|
|
312 | name = 0; |
|
|
313 | #if UTMP_SUPPORT |
|
|
314 | cmd_pid = 0; |
|
|
315 | #endif |
|
|
316 | } |
|
|
317 | |
|
|
318 | ptytty_unix::~ptytty_unix () |
|
|
319 | { |
|
|
320 | #if UTMP_SUPPORT |
|
|
321 | logout (); |
|
|
322 | #endif |
|
|
323 | put (); |
|
|
324 | } |
366 | |
325 | |
367 | void |
326 | void |
368 | rxvt_ptytty_unix::privileges (rxvt_privaction action) |
327 | ptytty_unix::put () |
369 | { |
328 | { |
370 | if (!name || !*name) |
329 | chmod (name, RESTORE_TTY_MODE); |
371 | return; |
330 | chown (name, 0, ttyconf.gid); |
372 | |
331 | |
373 | rxvt_privileges (RESTORE); |
332 | close_tty (); |
374 | |
333 | |
375 | if (action == SAVE) |
334 | if (pty >= 0) |
376 | { |
335 | close (pty); |
377 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
|
378 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
|
|
379 | if (lstat (name, &savestat) < 0) /* you lose out */ |
|
|
380 | ; |
|
|
381 | else |
|
|
382 | # endif |
|
|
383 | { |
|
|
384 | saved = true; |
|
|
385 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
|
|
386 | chmod (name, ttyconf.mode); |
|
|
387 | # ifdef HAVE_REVOKE |
|
|
388 | revoke (name); |
|
|
389 | # endif |
|
|
390 | } |
|
|
391 | } |
|
|
392 | else |
|
|
393 | { /* action == RESTORE */ |
|
|
394 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
|
395 | if (saved) |
|
|
396 | { |
|
|
397 | chmod (name, savestat.st_mode); |
|
|
398 | chown (name, savestat.st_uid, savestat.st_gid); |
|
|
399 | } |
|
|
400 | # else |
|
|
401 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
|
|
402 | chown (name, 0, 0); |
|
|
403 | # endif |
|
|
404 | |
336 | |
405 | } |
337 | free (name); |
406 | |
338 | |
407 | rxvt_privileges (IGNORE); |
|
|
408 | } |
|
|
409 | #endif |
|
|
410 | |
|
|
411 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
|
|
412 | { |
|
|
413 | pty = tty = -1; |
339 | pty = tty = -1; |
414 | name = 0; |
340 | name = 0; |
415 | #ifndef NO_SETOWNER_TTYDEV |
|
|
416 | saved = false; |
|
|
417 | #endif |
|
|
418 | #if UTMP_SUPPORT |
|
|
419 | cmd_pid = 0; |
|
|
420 | #endif |
|
|
421 | } |
|
|
422 | |
|
|
423 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
|
|
424 | { |
|
|
425 | logout (); |
|
|
426 | put (); |
|
|
427 | } |
|
|
428 | |
|
|
429 | void |
|
|
430 | rxvt_ptytty_unix::put () |
|
|
431 | { |
|
|
432 | #ifndef NO_SETOWNER_TTYDEV |
|
|
433 | privileges (RESTORE); |
|
|
434 | #endif |
|
|
435 | |
|
|
436 | if (pty >= 0) close (pty); |
|
|
437 | close_tty (); |
|
|
438 | free (name); |
|
|
439 | |
|
|
440 | pty = tty = -1; |
|
|
441 | name = 0; |
|
|
442 | } |
341 | } |
443 | |
342 | |
444 | bool |
343 | bool |
445 | rxvt_ptytty_unix::get () |
344 | ptytty_unix::get () |
446 | { |
345 | { |
447 | /* get master (pty) */ |
346 | /* get master (pty) */ |
448 | if ((pty = get_pty (&tty, &name)) < 0) |
347 | if ((pty = get_pty (&tty, &name)) < 0) |
449 | return false; |
348 | return false; |
450 | |
349 | |
… | |
… | |
452 | |
351 | |
453 | /* get slave (tty) */ |
352 | /* get slave (tty) */ |
454 | if (tty < 0) |
353 | if (tty < 0) |
455 | { |
354 | { |
456 | #ifndef NO_SETOWNER_TTYDEV |
355 | #ifndef NO_SETOWNER_TTYDEV |
457 | privileges (SAVE); |
356 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
|
|
357 | chmod (name, ttyconf.mode); |
|
|
358 | # ifdef HAVE_REVOKE |
|
|
359 | revoke (name); |
|
|
360 | # endif |
458 | #endif |
361 | #endif |
459 | |
362 | |
460 | if ((tty = get_tty (name)) < 0) |
363 | if ((tty = get_tty (name)) < 0) |
461 | { |
364 | { |
462 | put (); |
365 | put (); |
… | |
… | |
465 | } |
368 | } |
466 | |
369 | |
467 | return true; |
370 | return true; |
468 | } |
371 | } |
469 | |
372 | |
|
|
373 | #if PTYTTY_HELPER |
|
|
374 | |
|
|
375 | static int sock_fd; |
|
|
376 | static int pid; |
|
|
377 | |
|
|
378 | struct command |
|
|
379 | { |
|
|
380 | enum { get, login, destroy } type; |
|
|
381 | |
|
|
382 | ptytty *id; |
|
|
383 | |
|
|
384 | bool login_shell; |
|
|
385 | int cmd_pid; |
|
|
386 | char hostname[512]; // arbitrary, but should be plenty |
|
|
387 | }; |
|
|
388 | |
|
|
389 | struct ptytty_proxy : ptytty |
|
|
390 | { |
|
|
391 | ptytty *id; |
|
|
392 | |
|
|
393 | ptytty_proxy () |
|
|
394 | : id(0) |
|
|
395 | { |
|
|
396 | } |
|
|
397 | |
|
|
398 | ~ptytty_proxy (); |
|
|
399 | |
|
|
400 | bool get (); |
|
|
401 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
402 | }; |
|
|
403 | |
|
|
404 | bool |
|
|
405 | ptytty_proxy::get () |
|
|
406 | { |
|
|
407 | command cmd; |
|
|
408 | |
|
|
409 | cmd.type = command::get; |
|
|
410 | |
|
|
411 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
412 | |
|
|
413 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
414 | fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
415 | |
|
|
416 | if (!id) |
|
|
417 | return false; |
|
|
418 | |
|
|
419 | if ((pty = ptytty_recv_fd (sock_fd)) < 0 |
|
|
420 | || (tty = ptytty_recv_fd (sock_fd)) < 0) |
|
|
421 | fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
422 | |
|
|
423 | return true; |
|
|
424 | } |
|
|
425 | |
|
|
426 | void |
|
|
427 | ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
|
|
428 | { |
|
|
429 | command cmd; |
|
|
430 | |
|
|
431 | cmd.type = command::login; |
|
|
432 | cmd.id = id; |
|
|
433 | cmd.cmd_pid = cmd_pid; |
|
|
434 | cmd.login_shell = login_shell; |
|
|
435 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
|
|
436 | |
|
|
437 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
438 | } |
|
|
439 | |
|
|
440 | ptytty_proxy::~ptytty_proxy () |
|
|
441 | { |
|
|
442 | if (id) |
|
|
443 | { |
|
|
444 | command cmd; |
|
|
445 | |
|
|
446 | cmd.type = command::destroy; |
|
|
447 | cmd.id = id; |
|
|
448 | |
|
|
449 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
450 | } |
|
|
451 | } |
|
|
452 | |
|
|
453 | static |
|
|
454 | void serve () |
|
|
455 | { |
|
|
456 | command cmd; |
|
|
457 | vector<ptytty *> ptys; |
|
|
458 | |
|
|
459 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
460 | { |
|
|
461 | if (cmd.type == command::get) |
|
|
462 | { |
|
|
463 | // -> id ptyfd ttyfd |
|
|
464 | cmd.id = new ptytty_unix; |
|
|
465 | |
|
|
466 | if (cmd.id->get ()) |
|
|
467 | { |
|
|
468 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
469 | ptys.push_back (cmd.id); |
|
|
470 | |
|
|
471 | ptytty_send_fd (sock_fd, cmd.id->pty); |
|
|
472 | ptytty_send_fd (sock_fd, cmd.id->tty); |
|
|
473 | } |
|
|
474 | else |
|
|
475 | { |
|
|
476 | delete cmd.id; |
|
|
477 | cmd.id = 0; |
|
|
478 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
479 | } |
|
|
480 | } |
|
|
481 | else if (cmd.type == command::login) |
|
|
482 | { |
|
|
483 | #if UTMP_SUPPORT |
|
|
484 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
485 | { |
|
|
486 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
487 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
488 | } |
|
|
489 | #endif |
|
|
490 | } |
|
|
491 | else if (cmd.type == command::destroy) |
|
|
492 | { |
|
|
493 | ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
494 | |
|
|
495 | if (pty) |
|
|
496 | { |
|
|
497 | delete *pty; |
|
|
498 | ptys.erase (pty); |
|
|
499 | } |
|
|
500 | } |
|
|
501 | else |
|
|
502 | break; |
|
|
503 | } |
|
|
504 | |
|
|
505 | // destroy all ptys |
|
|
506 | for (ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
|
|
507 | delete *i; |
|
|
508 | } |
|
|
509 | |
|
|
510 | void ptytty_server () |
|
|
511 | { |
|
|
512 | int sv[2]; |
|
|
513 | |
|
|
514 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
515 | fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
516 | |
|
|
517 | pid = fork (); |
|
|
518 | |
|
|
519 | if (pid < 0) |
|
|
520 | fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
521 | |
|
|
522 | if (pid) |
|
|
523 | { |
|
|
524 | // client, process |
|
|
525 | sock_fd = sv[0]; |
|
|
526 | close (sv[1]); |
|
|
527 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
528 | } |
|
|
529 | else |
|
|
530 | { |
|
|
531 | // server, pty-helper |
|
|
532 | sock_fd = sv[1]; |
|
|
533 | |
|
|
534 | for (int fd = 0; fd < 1023; fd++) |
|
|
535 | if (fd != sock_fd) |
|
|
536 | close (fd); |
|
|
537 | |
|
|
538 | serve (); |
|
|
539 | _exit (EXIT_SUCCESS); |
|
|
540 | } |
|
|
541 | } |
|
|
542 | |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | // a "factory" *g* |
|
|
546 | ptytty * |
|
|
547 | new_ptytty () |
|
|
548 | { |
|
|
549 | #if PTYTTY_HELPER |
|
|
550 | if (pid > 0) |
|
|
551 | // use helper process |
|
|
552 | return new ptytty_proxy; |
|
|
553 | else |
|
|
554 | #endif |
|
|
555 | return new ptytty_unix; |
|
|
556 | } |
|
|
557 | |
470 | /*----------------------- end-of-file (C source) -----------------------*/ |
558 | /*----------------------- end-of-file (C source) -----------------------*/ |
471 | |
559 | |