… | |
… | |
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> |
34 | #include <csignal> |
34 | #include <csignal> |
35 | |
35 | |
36 | #include <sys/types.h> |
36 | #include <sys/types.h> |
|
|
37 | #include <sys/stat.h> |
37 | #include <unistd.h> |
38 | #include <unistd.h> |
38 | #include <fcntl.h> |
39 | #include <fcntl.h> |
39 | |
40 | |
40 | #ifdef HAVE_SYS_IOCTL_H |
41 | #ifdef HAVE_SYS_IOCTL_H |
41 | # include <sys/ioctl.h> |
42 | # include <sys/ioctl.h> |
42 | #endif |
43 | #endif |
43 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 | # include <sys/stropts.h> /* for I_PUSH */ |
45 | # include <sys/stropts.h> /* for I_PUSH */ |
45 | #endif |
46 | #endif |
46 | #ifdef HAVE_ISASTREAM |
47 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
47 | # include <stropts.h> |
48 | # include <stropts.h> |
48 | #endif |
49 | #endif |
49 | #if defined(HAVE_PTY_H) |
50 | #if defined(HAVE_PTY_H) |
50 | # include <pty.h> |
51 | # include <pty.h> |
51 | #elif defined(HAVE_LIBUTIL_H) |
52 | #elif defined(HAVE_LIBUTIL_H) |
… | |
… | |
63 | |
64 | |
64 | /* ------------------------------------------------------------------------- * |
65 | /* ------------------------------------------------------------------------- * |
65 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
66 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
66 | * ------------------------------------------------------------------------- */ |
67 | * ------------------------------------------------------------------------- */ |
67 | /* |
68 | /* |
68 | * Returns pty file descriptor, or -1 on failure |
69 | * Returns pty file descriptor, or -1 on failure |
69 | * If successful, ttydev is set to the name of the slave device. |
70 | * If successful, ttydev is set to the name of the slave device. |
70 | * fd_tty _may_ also be set to an open fd to the slave device |
71 | * fd_tty _may_ also be set to an open fd to the slave device |
71 | */ |
72 | */ |
72 | #if defined(UNIX98_PTY) |
73 | #if defined(UNIX98_PTY) |
|
|
74 | |
73 | static int |
75 | static int |
74 | get_pty (int *fd_tty, char **ttydev) |
76 | get_pty (int *fd_tty, char **ttydev) |
75 | { |
77 | { |
76 | int pfd; |
78 | int pfd; |
77 | |
79 | |
78 | # if defined(HAVE_GETPT) |
80 | # if defined(HAVE_GETPT) |
79 | pfd = getpt(); |
81 | pfd = getpt(); |
80 | # elif defined(HAVE_POSIX_OPENPT) |
82 | # elif defined(HAVE_POSIX_OPENPT) |
81 | pfd = posix_openpt (O_RDWR); |
83 | pfd = posix_openpt (O_RDWR); |
82 | # else |
84 | # else |
83 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
85 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
84 | # endif |
86 | # endif |
|
|
87 | |
85 | if (pfd >= 0) |
88 | if (pfd >= 0) |
86 | { |
89 | { |
87 | if (grantpt (pfd) == 0 /* change slave permissions */ |
90 | if (grantpt (pfd) == 0 /* change slave permissions */ |
88 | && unlockpt (pfd) == 0) |
91 | && unlockpt (pfd) == 0) |
|
|
92 | { |
89 | { /* slave now unlocked */ |
93 | /* slave now unlocked */ |
90 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
94 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
91 | return pfd; |
95 | return pfd; |
92 | } |
96 | } |
93 | |
97 | |
94 | close (pfd); |
98 | close (pfd); |
95 | } |
99 | } |
96 | |
100 | |
97 | return -1; |
101 | return -1; |
98 | } |
102 | } |
|
|
103 | |
99 | #elif defined(HAVE_OPENPTY) |
104 | #elif defined(HAVE_OPENPTY) |
|
|
105 | |
100 | static int |
106 | static int |
101 | get_pty (int *fd_tty, char **ttydev) |
107 | get_pty (int *fd_tty, char **ttydev) |
102 | { |
108 | { |
103 | int pfd; |
109 | int pfd; |
104 | int res; |
110 | int res; |
105 | char tty_name[32]; |
111 | |
106 | |
|
|
107 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
112 | res = openpty (&pfd, fd_tty, NULL, NULL, NULL); |
|
|
113 | |
108 | if (res != -1) |
114 | if (res != -1) |
109 | { |
115 | { |
110 | *ttydev = strdup (tty_name); |
116 | *ttydev = strdup (ttyname (*fd_tty)); |
111 | return pfd; |
117 | return pfd; |
112 | } |
118 | } |
113 | |
119 | |
114 | return -1; |
120 | return -1; |
115 | } |
121 | } |
|
|
122 | |
116 | #elif defined(HAVE__GETPTY) |
123 | #elif defined(HAVE__GETPTY) |
|
|
124 | |
117 | static int |
125 | static int |
118 | get_pty (int *fd_tty, char **ttydev) |
126 | get_pty (int *fd_tty, char **ttydev) |
119 | { |
127 | { |
120 | int pfd; |
128 | int pfd; |
|
|
129 | char *slave; |
121 | |
130 | |
122 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
131 | slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
123 | if (*ttydev != NULL) |
|
|
124 | return pfd; |
|
|
125 | |
132 | |
126 | return -1; |
133 | if (slave != NULL) |
127 | } |
|
|
128 | #elif defined(HAVE_DEV_PTC) |
|
|
129 | static int |
|
|
130 | get_pty (int *fd_tty, char **ttydev) |
|
|
131 | { |
|
|
132 | int pfd; |
|
|
133 | |
|
|
134 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
135 | { |
134 | { |
136 | *ttydev = strdup (ttyname (pfd)); |
135 | *ttydev = strdup (slave); |
137 | return pfd; |
136 | return pfd; |
138 | } |
137 | } |
139 | |
138 | |
140 | return -1; |
139 | return -1; |
141 | } |
|
|
142 | #elif defined(HAVE_DEV_CLONE) |
|
|
143 | static int |
|
|
144 | get_pty (int *fd_tty, char **ttydev) |
|
|
145 | { |
|
|
146 | int pfd; |
|
|
147 | |
|
|
148 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
149 | { |
|
|
150 | *ttydev = strdup (ptsname (pfd)); |
|
|
151 | return pfd; |
|
|
152 | } |
140 | } |
153 | |
141 | |
154 | return -1; |
|
|
155 | } |
|
|
156 | #else |
142 | #else |
|
|
143 | |
157 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
144 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
158 | static int |
145 | static int |
159 | get_pty (int *fd_tty, char **ttydev) |
146 | get_pty (int *fd_tty, char **ttydev) |
160 | { |
147 | { |
161 | int pfd; |
148 | int pfd; |
162 | int i; |
149 | int i; |
163 | char pty_name[32]; |
150 | char pty_name[32]; |
164 | char tty_name[32]; |
151 | char tty_name[32]; |
165 | const char *majors = "pqrstuvwxyzabcde"; |
152 | const char *majors = "pqrstuvwxyzabcde"; |
166 | const char *minors = "0123456789abcdef"; |
153 | const char *minors = "0123456789abcdef"; |
|
|
154 | |
167 | for (i = 0; i < 256; i++) |
155 | for (i = 0; i < 256; i++) |
168 | { |
156 | { |
169 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
157 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
170 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
158 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
|
|
159 | |
171 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
160 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
172 | { |
161 | { |
173 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
162 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
174 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
163 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
175 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
164 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
176 | continue; |
165 | continue; |
177 | } |
166 | } |
|
|
167 | |
178 | if (access (tty_name, R_OK | W_OK) == 0) |
168 | if (access (tty_name, R_OK | W_OK) == 0) |
179 | { |
169 | { |
180 | *ttydev = strdup (tty_name); |
170 | *ttydev = strdup (tty_name); |
181 | return pfd; |
171 | return pfd; |
182 | } |
172 | } |
183 | |
173 | |
184 | close (pfd); |
174 | close (pfd); |
185 | } |
175 | } |
186 | |
176 | |
187 | return -1; |
177 | return -1; |
188 | } |
178 | } |
|
|
179 | |
189 | #endif |
180 | #endif |
190 | |
181 | |
191 | /*----------------------------------------------------------------------*/ |
182 | /*----------------------------------------------------------------------*/ |
192 | /* |
183 | /* |
193 | * Returns tty file descriptor, or -1 on failure |
184 | * Returns tty file descriptor, or -1 on failure |
194 | */ |
185 | */ |
195 | static int |
186 | static int |
196 | get_tty (char *ttydev) |
187 | get_tty (char *ttydev) |
197 | { |
188 | { |
198 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
189 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
… | |
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203 | * Make our tty a controlling tty so that /dev/tty points to us |
194 | * Make our tty a controlling tty so that /dev/tty points to us |
204 | */ |
195 | */ |
205 | static int |
196 | static int |
206 | control_tty (int fd_tty) |
197 | control_tty (int fd_tty) |
207 | { |
198 | { |
|
|
199 | int fd; |
|
|
200 | |
208 | setsid (); |
201 | setsid (); |
209 | |
202 | |
210 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
203 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
211 | /* |
204 | /* |
212 | * Push STREAMS modules: |
205 | * Push STREAMS modules: |
… | |
… | |
223 | * documentation is really unclear about whether it is any close () on |
216 | * documentation is really unclear about whether it is any close () on |
224 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
217 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
225 | * close () - on the master side which causes a hang up to be sent |
218 | * close () - on the master side which causes a hang up to be sent |
226 | * through - Geoff Wing |
219 | * through - Geoff Wing |
227 | */ |
220 | */ |
228 | # ifdef HAVE_ISASTREAM |
221 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
229 | if (isastream (fd_tty) == 1) |
222 | if (isastream (fd_tty) == 1) |
230 | # endif |
223 | # endif |
231 | { |
224 | { |
232 | ioctl (fd_tty, I_PUSH, "ptem"); |
225 | ioctl (fd_tty, I_PUSH, "ptem"); |
233 | ioctl (fd_tty, I_PUSH, "ldterm"); |
226 | ioctl (fd_tty, I_PUSH, "ldterm"); |
234 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
227 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
235 | } |
228 | } |
236 | #endif |
229 | #endif |
237 | |
230 | |
|
|
231 | #ifdef TIOCSCTTY |
238 | ioctl (fd_tty, TIOCSCTTY, NULL); |
232 | ioctl (fd_tty, TIOCSCTTY, NULL); |
|
|
233 | #else |
|
|
234 | fd = open (ttyname (fd_tty), O_RDWR); |
|
|
235 | if (fd >= 0) |
|
|
236 | close (fd); |
|
|
237 | #endif |
239 | |
238 | |
240 | int fd = open ("/dev/tty", O_WRONLY); |
239 | fd = open ("/dev/tty", O_WRONLY); |
241 | if (fd < 0) |
240 | if (fd < 0) |
242 | return -1; /* fatal */ |
241 | return -1; /* fatal */ |
243 | |
242 | |
244 | close (fd); |
243 | close (fd); |
245 | |
244 | |
… | |
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297 | { |
296 | { |
298 | #ifdef TTY_GID_SUPPORT |
297 | #ifdef TTY_GID_SUPPORT |
299 | struct group *gr = getgrnam ("tty"); |
298 | struct group *gr = getgrnam ("tty"); |
300 | |
299 | |
301 | if (gr) |
300 | if (gr) |
|
|
301 | { |
302 | { /* change group ownership of tty to "tty" */ |
302 | /* change group ownership of tty to "tty" */ |
303 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
303 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
304 | gid = gr->gr_gid; |
304 | gid = gr->gr_gid; |
305 | } |
305 | } |
306 | else |
306 | else |
307 | #endif /* TTY_GID_SUPPORT */ |
307 | #endif /* TTY_GID_SUPPORT */ |
308 | { |
308 | { |
309 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
309 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
310 | gid = 0; |
310 | gid = 0; |
311 | } |
311 | } |
312 | } |
312 | } |
… | |
… | |
329 | } |
329 | } |
330 | |
330 | |
331 | void |
331 | void |
332 | ptytty_unix::put () |
332 | ptytty_unix::put () |
333 | { |
333 | { |
|
|
334 | if (name) |
|
|
335 | { |
334 | chmod (name, RESTORE_TTY_MODE); |
336 | chmod (name, RESTORE_TTY_MODE); |
335 | chown (name, 0, ttyconf.gid); |
337 | chown (name, 0, ttyconf.gid); |
|
|
338 | } |
336 | |
339 | |
337 | close_tty (); |
340 | close_tty (); |
338 | |
341 | |
339 | if (pty >= 0) |
342 | if (pty >= 0) |
340 | close (pty); |
343 | close (pty); |