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> |
40 | |
37 | |
41 | #ifdef HAVE_SYS_IOCTL_H |
38 | #ifdef HAVE_SYS_IOCTL_H |
42 | # include <sys/ioctl.h> |
39 | # include <sys/ioctl.h> |
43 | #endif |
40 | #endif |
44 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
41 | #if defined(HAVE_SYS_STROPTS_H) |
45 | # include <sys/stropts.h> /* for I_PUSH */ |
42 | # include <sys/stropts.h> /* for I_PUSH */ |
46 | #endif |
43 | #endif |
47 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
44 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
48 | # include <stropts.h> |
45 | # include <stropts.h> |
49 | #endif |
46 | #endif |
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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); |
82 | pfd = posix_openpt (O_RDWR | O_NOCTTY); |
84 | # else |
83 | # else |
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84 | # ifdef _AIX |
85 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
85 | pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0); |
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86 | # else |
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87 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
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88 | # endif |
86 | # endif |
89 | # endif |
87 | |
90 | |
88 | if (pfd >= 0) |
91 | if (pfd >= 0) |
89 | { |
92 | { |
90 | if (grantpt (pfd) == 0 /* change slave permissions */ |
93 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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126 | get_pty (int *fd_tty, char **ttydev) |
129 | get_pty (int *fd_tty, char **ttydev) |
127 | { |
130 | { |
128 | int pfd; |
131 | int pfd; |
129 | char *slave; |
132 | char *slave; |
130 | |
133 | |
131 | slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
134 | slave = _getpty (&pfd, O_RDWR | O_NOCTTY, 0622, 0); |
132 | |
135 | |
133 | if (slave != NULL) |
136 | if (slave != NULL) |
134 | { |
137 | { |
135 | *ttydev = strdup (slave); |
138 | *ttydev = strdup (slave); |
136 | return pfd; |
139 | return pfd; |
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152 | const char *majors = "pqrstuvwxyzabcde"; |
155 | const char *majors = "pqrstuvwxyzabcde"; |
153 | const char *minors = "0123456789abcdef"; |
156 | const char *minors = "0123456789abcdef"; |
154 | |
157 | |
155 | for (i = 0; i < 256; i++) |
158 | for (i = 0; i < 256; i++) |
156 | { |
159 | { |
157 | 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]); |
158 | 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]); |
159 | |
162 | |
160 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
163 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
161 | { |
164 | { |
162 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
165 | snprintf (pty_name, 32, "/dev/ptyp%d", i); |
163 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
166 | snprintf (tty_name, 32, "/dev/ttyp%d", i); |
164 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
167 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
165 | continue; |
168 | continue; |
166 | } |
169 | } |
167 | |
170 | |
168 | if (access (tty_name, R_OK | W_OK) == 0) |
171 | if (access (tty_name, R_OK | W_OK) == 0) |
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325 | { |
328 | { |
326 | /* get master (pty) */ |
329 | /* get master (pty) */ |
327 | if ((pty = get_pty (&tty, &name)) < 0) |
330 | if ((pty = get_pty (&tty, &name)) < 0) |
328 | return false; |
331 | return false; |
329 | |
332 | |
330 | fcntl (pty, F_SETFL, O_NONBLOCK); |
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331 | |
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332 | /* get slave (tty) */ |
333 | /* get slave (tty) */ |
333 | if (tty < 0) |
334 | if (tty < 0) |
334 | { |
335 | { |
335 | #ifndef NO_SETOWNER_TTYDEV |
336 | #ifndef NO_SETOWNER_TTYDEV |
336 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
337 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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345 | put (); |
346 | put (); |
346 | return false; |
347 | return false; |
347 | } |
348 | } |
348 | } |
349 | } |
349 | |
350 | |
350 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
351 | #if defined(I_PUSH) |
351 | /* |
352 | /* |
352 | * Push STREAMS modules: |
353 | * Push STREAMS modules: |
353 | * ptem: pseudo-terminal hardware emulation module. |
354 | * ptem: pseudo-terminal hardware emulation module. |
354 | * ldterm: standard terminal line discipline. |
355 | * ldterm: standard terminal line discipline. |
355 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
356 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
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372 | ioctl (tty, I_PUSH, "ldterm"); |
373 | ioctl (tty, I_PUSH, "ldterm"); |
373 | ioctl (tty, I_PUSH, "ttcompat"); |
374 | ioctl (tty, I_PUSH, "ttcompat"); |
374 | } |
375 | } |
375 | #endif |
376 | #endif |
376 | |
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 | |
377 | return true; |
390 | return true; |
378 | } |
391 | } |
379 | |
392 | |