1 | // This file is part of libptytty. Do not make local modifications. |
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2 | // http://software.schmorp.de/pkg/libptytty |
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3 | |
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4 | /*----------------------------------------------------------------------* |
1 | /*----------------------------------------------------------------------* |
5 | * File: ptytty.C |
2 | * File: ptytty.C |
6 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
7 | * |
4 | * |
8 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
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27 | |
24 | |
28 | #include "config.h" |
25 | #include "config.h" |
29 | |
26 | |
30 | #include "ptytty.h" |
27 | #include "ptytty.h" |
31 | |
28 | |
32 | #include <cstdlib> |
29 | #include <stdlib.h> |
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30 | #include <cstdio> |
33 | #include <cstring> |
31 | #include <cstring> |
34 | #include <csignal> |
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35 | |
32 | |
36 | #include <sys/types.h> |
33 | #include <sys/types.h> |
37 | #include <sys/stat.h> |
34 | #include <sys/stat.h> |
38 | #include <unistd.h> |
35 | #include <unistd.h> |
39 | #include <fcntl.h> |
36 | #include <fcntl.h> |
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56 | #endif |
53 | #endif |
57 | #ifdef TTY_GID_SUPPORT |
54 | #ifdef TTY_GID_SUPPORT |
58 | #include <grp.h> |
55 | #include <grp.h> |
59 | #endif |
56 | #endif |
60 | |
57 | |
61 | #include <cstdio> |
58 | #ifndef O_NOCTTY |
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59 | # define O_NOCTTY 0 |
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60 | #endif |
62 | |
61 | |
63 | ///////////////////////////////////////////////////////////////////////////// |
62 | ///////////////////////////////////////////////////////////////////////////// |
64 | |
63 | |
65 | /* ------------------------------------------------------------------------- * |
64 | /* ------------------------------------------------------------------------- * |
66 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
65 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
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76 | get_pty (int *fd_tty, char **ttydev) |
75 | get_pty (int *fd_tty, char **ttydev) |
77 | { |
76 | { |
78 | int pfd; |
77 | int pfd; |
79 | |
78 | |
80 | # if defined(HAVE_GETPT) |
79 | # if defined(HAVE_GETPT) |
81 | pfd = getpt(); |
80 | pfd = getpt (); |
82 | # elif defined(HAVE_POSIX_OPENPT) |
81 | # elif defined(HAVE_POSIX_OPENPT) |
83 | pfd = posix_openpt (O_RDWR | O_NOCTTY); |
82 | pfd = posix_openpt (O_RDWR | O_NOCTTY); |
84 | # else |
83 | # else |
85 | # ifdef _AIX |
84 | # ifdef _AIX |
86 | pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0); |
85 | pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0); |
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156 | const char *majors = "pqrstuvwxyzabcde"; |
155 | const char *majors = "pqrstuvwxyzabcde"; |
157 | const char *minors = "0123456789abcdef"; |
156 | const char *minors = "0123456789abcdef"; |
158 | |
157 | |
159 | for (i = 0; i < 256; i++) |
158 | for (i = 0; i < 256; i++) |
160 | { |
159 | { |
161 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
160 | snprintf (pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
162 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
161 | snprintf (tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
163 | |
162 | |
164 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
163 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
165 | { |
164 | { |
166 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
165 | snprintf (pty_name, 32, "/dev/ptyp%d", i); |
167 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
166 | snprintf (tty_name, 32, "/dev/ttyp%d", i); |
168 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
167 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
169 | continue; |
168 | continue; |
170 | } |
169 | } |
171 | |
170 | |
172 | if (access (tty_name, R_OK | W_OK) == 0) |
171 | if (access (tty_name, R_OK | W_OK) == 0) |
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328 | ptytty_unix::get () |
327 | ptytty_unix::get () |
329 | { |
328 | { |
330 | /* get master (pty) */ |
329 | /* get master (pty) */ |
331 | if ((pty = get_pty (&tty, &name)) < 0) |
330 | if ((pty = get_pty (&tty, &name)) < 0) |
332 | return false; |
331 | return false; |
333 | |
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334 | fcntl (pty, F_SETFL, O_NONBLOCK); |
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335 | |
332 | |
336 | /* get slave (tty) */ |
333 | /* get slave (tty) */ |
337 | if (tty < 0) |
334 | if (tty < 0) |
338 | { |
335 | { |
339 | #ifndef NO_SETOWNER_TTYDEV |
336 | #ifndef NO_SETOWNER_TTYDEV |
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376 | ioctl (tty, I_PUSH, "ldterm"); |
373 | ioctl (tty, I_PUSH, "ldterm"); |
377 | ioctl (tty, I_PUSH, "ttcompat"); |
374 | ioctl (tty, I_PUSH, "ttcompat"); |
378 | } |
375 | } |
379 | #endif |
376 | #endif |
380 | |
377 | |
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378 | #if UTMP_SUPPORT |
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379 | # if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) |
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380 | int fd_stdin = dup (STDIN_FILENO); |
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381 | dup2 (tty, STDIN_FILENO); |
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382 | |
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383 | utmp_pos = ttyslot (); |
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384 | |
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385 | dup2 (fd_stdin, STDIN_FILENO); |
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386 | close (fd_stdin); |
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387 | # endif |
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388 | #endif |
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389 | |
381 | return true; |
390 | return true; |
382 | } |
391 | } |
383 | |
392 | |