1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
2 | * File: ptytty.c |
2 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * $Id: ptytty.C,v 1.4 2003/12/02 21:49:46 pcg Exp $ |
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5 | * |
4 | * |
6 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
7 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
6 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
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7 | * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
8 | * |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or |
11 | * the Free Software Foundation; either version 2 of the License, or |
12 | * (at your option) any later version. |
12 | * (at your option) any later version. |
… | |
… | |
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 */ |
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25 | #include "rxvt.h" |
25 | |
26 | |
26 | /* |
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27 | * Try to be self-contained except for the above autoconfig'd defines |
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28 | */ |
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29 | |
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30 | #include <stdio.h> |
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31 | #ifdef HAVE_STDLIB_H |
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32 | # include <stdlib.h> |
27 | # include <cstdlib> |
33 | #endif |
28 | # include <cstring> |
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29 | |
34 | #ifdef HAVE_SYS_TYPES_H |
30 | #ifdef HAVE_SYS_TYPES_H |
35 | # include <sys/types.h> |
31 | # include <sys/types.h> |
36 | #endif |
32 | #endif |
37 | #ifdef HAVE_UNISTD_H |
33 | #ifdef HAVE_UNISTD_H |
38 | # include <unistd.h> |
34 | # include <unistd.h> |
39 | #endif |
35 | #endif |
40 | #if defined(HAVE_STRING_H) |
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41 | # include <string.h> |
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42 | #endif |
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43 | #ifdef HAVE_FCNTL_H |
36 | #ifdef HAVE_FCNTL_H |
44 | # include <fcntl.h> |
37 | # include <fcntl.h> |
45 | #endif |
38 | #endif |
46 | #ifdef HAVE_SYS_IOCTL_H |
39 | #ifdef HAVE_SYS_IOCTL_H |
47 | # include <sys/ioctl.h> |
40 | # include <sys/ioctl.h> |
48 | #endif |
41 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
51 | #endif |
44 | #endif |
52 | |
45 | #ifdef HAVE_ISASTREAM |
53 | #ifdef DEBUG_TTY |
46 | # include <stropts.h> |
54 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
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55 | #else |
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56 | # define D_TTY(x) |
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57 | #endif |
47 | #endif |
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48 | #if defined(HAVE_PTY_H) |
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49 | # include <pty.h> |
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50 | #elif defined(HAVE_LIBUTIL_H) |
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51 | # include <libutil.h> |
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52 | #elif defined(HAVE_UTIL_H) |
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53 | # include <util.h> |
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54 | #endif |
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55 | |
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56 | #include <cstdio> |
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57 | #include <grp.h> |
58 | |
58 | |
59 | /* ------------------------------------------------------------------------- * |
59 | /* ------------------------------------------------------------------------- * |
60 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
60 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
61 | * ------------------------------------------------------------------------- */ |
61 | * ------------------------------------------------------------------------- */ |
62 | /* |
62 | /* |
63 | * Returns pty file descriptor, or -1 on failure |
63 | * Returns pty file descriptor, or -1 on failure |
64 | * If successful, ttydev is set to the name of the slave device. |
64 | * If successful, ttydev is set to the name of the slave device. |
65 | * fd_tty _may_ also be set to an open fd to the slave device |
65 | * fd_tty _may_ also be set to an open fd to the slave device |
66 | */ |
66 | */ |
67 | /* EXTPROTO */ |
67 | static int |
68 | int |
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69 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
68 | get_pty (int *fd_tty, char **ttydev) |
70 | { |
69 | { |
71 | int pfd; |
70 | int pfd; |
72 | |
71 | |
73 | #ifdef PTYS_ARE_OPENPTY |
72 | #ifdef PTYS_ARE_OPENPTY |
74 | |
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75 | char tty_name[sizeof "/dev/pts/????\0"]; |
73 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | |
74 | |
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75 | rxvt_privileges(RESTORE); |
77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
76 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
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77 | rxvt_privileges(IGNORE); |
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78 | |
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79 | if (res != -1) |
78 | { |
80 | { |
79 | *ttydev = strdup(tty_name); |
81 | *ttydev = strdup (tty_name); |
80 | return pfd; |
82 | return pfd; |
81 | } |
83 | } |
82 | #endif |
84 | #endif |
83 | |
85 | |
84 | #ifdef PTYS_ARE__GETPTY |
86 | #ifdef PTYS_ARE__GETPTY |
85 | *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
87 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
86 | if (*ttydev != NULL) |
88 | if (*ttydev != NULL) |
87 | return pfd; |
89 | return pfd; |
88 | #endif |
90 | #endif |
89 | |
91 | |
90 | #ifdef PTYS_ARE_GETPTY |
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91 | |
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92 | char *ptydev; |
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93 | |
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94 | while ((ptydev = getpty()) != NULL) |
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95 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
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96 | { |
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97 | *ttydev = ptydev; |
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98 | return pfd; |
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99 | } |
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100 | #endif |
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101 | |
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102 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
92 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
103 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
93 | # if defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
104 | |
94 | |
105 | { |
95 | { |
106 | # ifdef PTYS_ARE_GETPT |
96 | # ifdef PTYS_ARE_POSIX |
107 | pfd = getpt(); |
97 | pfd = posix_openpt (O_RDWR); |
108 | # else |
98 | # else |
109 | |
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110 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
99 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
111 | # endif |
100 | # endif |
112 | |
101 | |
113 | if (pfd >= 0) |
102 | if (pfd >= 0) |
114 | { |
103 | { |
115 | if (grantpt(pfd) == 0 /* change slave permissions */ |
104 | if (grantpt (pfd) == 0 /* change slave permissions */ |
116 | && unlockpt(pfd) == 0) |
105 | && unlockpt (pfd) == 0) |
117 | { /* slave now unlocked */ |
106 | { /* slave now unlocked */ |
118 | *ttydev = ptsname(pfd); /* get slave's name */ |
107 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
119 | return pfd; |
108 | return pfd; |
120 | } |
109 | } |
121 | close(pfd); |
110 | close (pfd); |
122 | } |
111 | } |
123 | } |
112 | } |
124 | # endif |
113 | # endif |
125 | #endif |
114 | #endif |
126 | |
115 | |
127 | #ifdef PTYS_ARE_PTC |
116 | #ifdef PTYS_ARE_PTC |
128 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
117 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
129 | { |
118 | { |
130 | *ttydev = ttyname(pfd); |
119 | *ttydev = strdup (ttyname (pfd)); |
131 | return pfd; |
120 | return pfd; |
132 | } |
121 | } |
133 | #endif |
122 | #endif |
134 | |
123 | |
135 | #ifdef PTYS_ARE_CLONE |
124 | #ifdef PTYS_ARE_CLONE |
136 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
125 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
137 | { |
126 | { |
138 | *ttydev = ptsname(pfd); |
127 | *ttydev = strdup (ptsname (pfd)); |
139 | return pfd; |
128 | return pfd; |
140 | } |
129 | } |
141 | #endif |
130 | #endif |
142 | |
131 | |
143 | #ifdef PTYS_ARE_NUMERIC |
132 | #ifdef PTYS_ARE_NUMERIC |
144 | { |
133 | { |
145 | int idx; |
134 | int idx; |
146 | char *c1, *c2; |
135 | char *c1, *c2; |
147 | char pty_name[] = "/dev/ptyp???"; |
136 | char pty_name[] = "/dev/ptyp???"; |
148 | char tty_name[] = "/dev/ttyp???"; |
137 | char tty_name[] = "/dev/ttyp???"; |
149 | |
138 | |
150 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
139 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
151 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
140 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
152 | for (idx = 0; idx < 256; idx++) |
141 | for (idx = 0; idx < 256; idx++) |
153 | { |
142 | { |
154 | sprintf(c1, "%d", idx); |
143 | sprintf (c1, "%d", idx); |
155 | sprintf(c2, "%d", idx); |
144 | sprintf (c2, "%d", idx); |
156 | if (access(tty_name, F_OK) < 0) |
145 | if (access (tty_name, F_OK) < 0) |
157 | { |
146 | { |
158 | idx = 256; |
147 | idx = 256; |
159 | break; |
148 | break; |
160 | } |
149 | } |
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150 | |
161 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
151 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
162 | { |
152 | { |
163 | if (access(tty_name, R_OK | W_OK) == 0) |
153 | if (access (tty_name, R_OK | W_OK) == 0) |
164 | { |
154 | { |
165 | *ttydev = strdup(tty_name); |
155 | *ttydev = strdup (tty_name); |
166 | return pfd; |
156 | return pfd; |
167 | } |
157 | } |
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158 | |
168 | close(pfd); |
159 | close (pfd); |
169 | } |
160 | } |
170 | } |
161 | } |
171 | } |
162 | } |
172 | #endif |
163 | #endif |
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164 | |
173 | #ifdef PTYS_ARE_SEARCHED |
165 | #ifdef PTYS_ARE_SEARCHED |
174 | { |
166 | { |
175 | const char *c1, *c2; |
167 | const char *c1, *c2; |
176 | char pty_name[] = "/dev/pty??"; |
168 | char pty_name[] = "/dev/pty??"; |
177 | char tty_name[] = "/dev/tty??"; |
169 | char tty_name[] = "/dev/tty??"; |
178 | |
170 | |
179 | # ifndef PTYCHAR1 |
171 | # ifndef PTYCHAR1 |
180 | # define PTYCHAR1 "pqrstuvwxyz" |
172 | # define PTYCHAR1 "pqrstuvwxyz" |
181 | # endif |
173 | # endif |
182 | # ifndef PTYCHAR2 |
174 | # ifndef PTYCHAR2 |
183 | # define PTYCHAR2 "0123456789abcdef" |
175 | # define PTYCHAR2 "0123456789abcdef" |
184 | # endif |
176 | # endif |
185 | |
177 | |
186 | for (c1 = PTYCHAR1; *c1; c1++) |
178 | for (c1 = PTYCHAR1; *c1; c1++) |
187 | { |
179 | { |
188 | pty_name[(sizeof(pty_name) - 3)] = |
180 | pty_name[ (sizeof (pty_name) - 3)] = |
189 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
181 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
190 | for (c2 = PTYCHAR2; *c2; c2++) |
182 | for (c2 = PTYCHAR2; *c2; c2++) |
191 | { |
183 | { |
192 | pty_name[(sizeof(pty_name) - 2)] = |
184 | pty_name[ (sizeof (pty_name) - 2)] = |
193 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
185 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
194 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
186 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
195 | { |
187 | { |
196 | if (access(tty_name, R_OK | W_OK) == 0) |
188 | if (access (tty_name, R_OK | W_OK) == 0) |
197 | { |
189 | { |
198 | *ttydev = strdup(tty_name); |
190 | *ttydev = strdup (tty_name); |
199 | return pfd; |
191 | return pfd; |
200 | } |
192 | } |
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193 | |
201 | close(pfd); |
194 | close (pfd); |
202 | } |
195 | } |
203 | } |
196 | } |
204 | } |
197 | } |
205 | } |
198 | } |
206 | #endif |
199 | #endif |
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200 | |
207 | return -1; |
201 | return -1; |
208 | } |
202 | } |
209 | |
203 | |
210 | /*----------------------------------------------------------------------*/ |
204 | /*----------------------------------------------------------------------*/ |
211 | /* |
205 | /* |
212 | * Returns tty file descriptor, or -1 on failure |
206 | * Returns tty file descriptor, or -1 on failure |
213 | */ |
207 | */ |
214 | /* EXTPROTO */ |
208 | static int |
215 | int |
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216 | rxvt_get_tty (const char *ttydev) |
209 | get_tty (char *ttydev) |
217 | { |
210 | { |
218 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
211 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
219 | } |
212 | } |
220 | |
213 | |
221 | /*----------------------------------------------------------------------*/ |
214 | /*----------------------------------------------------------------------*/ |
222 | /* |
215 | /* |
223 | * Make our tty a controlling tty so that /dev/tty points to us |
216 | * Make our tty a controlling tty so that /dev/tty points to us |
224 | */ |
217 | */ |
225 | /* EXTPROTO */ |
218 | static int |
226 | int |
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227 | rxvt_control_tty (int fd_tty, const char *ttydev) |
219 | control_tty (int fd_tty, const char *ttydev) |
228 | { |
220 | { |
229 | #ifndef __QNX__ |
221 | #ifndef __QNX__ |
230 | int fd; |
222 | int fd; |
231 | |
223 | |
232 | D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
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233 | /* ---------------------------------------- */ |
224 | /* ---------------------------------------- */ |
234 | # ifdef HAVE_SETSID |
225 | # ifdef HAVE_SETSID |
235 | setsid (); |
226 | setsid (); |
236 | # endif |
227 | # endif |
237 | # if defined(HAVE_SETPGID) |
228 | # if defined(HAVE_SETPGID) |
238 | setpgid (0, 0); |
229 | setpgid (0, 0); |
239 | # elif defined(HAVE_SETPGRP) |
230 | # elif defined(HAVE_SETPGRP) |
240 | setpgrp (0, 0); |
231 | setpgrp (0, 0); |
241 | # endif |
232 | # endif |
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233 | |
242 | /* ---------------------------------------- */ |
234 | /* ---------------------------------------- */ |
243 | # ifdef TIOCNOTTY |
235 | # ifdef TIOCNOTTY |
244 | |
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245 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
236 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
246 | D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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247 | if (fd >= 0) |
237 | if (fd >= 0) |
248 | { |
238 | { |
249 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
239 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
250 | close (fd); |
240 | close (fd); |
251 | } |
241 | } |
252 | # endif |
242 | # endif |
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243 | |
253 | /* ---------------------------------------- */ |
244 | /* ---------------------------------------- */ |
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
245 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
255 | D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
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256 | if (fd >= 0) |
246 | if (fd >= 0) |
257 | close (fd); /* ouch: still have controlling tty */ |
247 | close (fd); /* ouch: still have controlling tty */ |
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248 | |
258 | /* ---------------------------------------- */ |
249 | /* ---------------------------------------- */ |
259 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
250 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
260 | /* |
251 | /* |
261 | * Push STREAMS modules: |
252 | * Push STREAMS modules: |
262 | * ptem: pseudo-terminal hardware emulation module. |
253 | * ptem: pseudo-terminal hardware emulation module. |
263 | * ldterm: standard terminal line discipline. |
254 | * ldterm: standard terminal line discipline. |
264 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
255 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
265 | * |
256 | * |
266 | * After we push the STREAMS modules, the first open() on the slave side |
257 | * After we push the STREAMS modules, the first open () on the slave side |
267 | * (i.e. the next section between the dashes giving us "tty opened OK") |
258 | * (i.e. the next section between the dashes giving us "tty opened OK") |
268 | * should make the "ptem" (or "ldterm" depending upon either which OS |
259 | * should make the "ptem" (or "ldterm" depending upon either which OS |
269 | * version or which set of manual pages you have) module give us a |
260 | * version or which set of manual pages you have) module give us a |
270 | * controlling terminal. We must already have close()d the master side |
261 | * controlling terminal. We must already have close ()d the master side |
271 | * fd in this child process before we push STREAMS modules on because the |
262 | * fd in this child process before we push STREAMS modules on because the |
272 | * documentation is really unclear about whether it is any close() on |
263 | * documentation is really unclear about whether it is any close () on |
273 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
264 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
274 | * close() - on the master side which causes a hang up to be sent |
265 | * close () - on the master side which causes a hang up to be sent |
275 | * through - Geoff Wing |
266 | * through - Geoff Wing |
276 | */ |
267 | */ |
277 | # ifdef HAVE_ISASTREAM |
268 | # ifdef HAVE_ISASTREAM |
278 | if (isastream (fd_tty) == 1) |
269 | if (isastream (fd_tty) == 1) |
279 | # endif |
270 | # endif |
280 | { |
271 | { |
281 | D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
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282 | ioctl (fd_tty, I_PUSH, "ptem"); |
272 | ioctl (fd_tty, I_PUSH, "ptem"); |
283 | ioctl (fd_tty, I_PUSH, "ldterm"); |
273 | ioctl (fd_tty, I_PUSH, "ldterm"); |
284 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
274 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
285 | } |
275 | } |
286 | #endif |
276 | #endif |
287 | /* ---------------------------------------- */ |
277 | /* ---------------------------------------- */ |
288 | # if defined(TIOCSCTTY) |
278 | # if defined(TIOCSCTTY) |
289 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
279 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
290 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
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291 | # elif defined(TIOCSETCTTY) |
280 | # elif defined(TIOCSETCTTY) |
292 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
281 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
293 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
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294 | # else |
282 | # else |
295 | fd = open (ttydev, O_RDWR); |
283 | fd = open (ttydev, O_RDWR); |
296 | D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
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297 | if (fd >= 0) |
284 | if (fd >= 0) |
298 | close(fd); |
285 | close (fd); |
299 | # endif |
286 | # endif |
300 | /* ---------------------------------------- */ |
287 | /* ---------------------------------------- */ |
301 | fd = open ("/dev/tty", O_WRONLY); |
288 | fd = open ("/dev/tty", O_WRONLY); |
302 | D_TTY ((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
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303 | if (fd < 0) |
289 | if (fd < 0) |
304 | return -1; /* fatal */ |
290 | return -1; /* fatal */ |
305 | close (fd); |
291 | close (fd); |
306 | /* ---------------------------------------- */ |
292 | /* ---------------------------------------- */ |
307 | D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
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308 | /* ---------------------------------------- */ |
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309 | #endif /* ! __QNX__ */ |
293 | #endif /* ! __QNX__ */ |
310 | |
294 | |
311 | return 0; |
295 | return 0; |
312 | } |
296 | } |
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297 | |
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298 | #ifndef NO_SETOWNER_TTYDEV |
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299 | static struct ttyconf { |
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300 | gid_t gid; |
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301 | mode_t mode; |
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302 | |
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303 | ttyconf () |
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304 | { |
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305 | #ifdef TTY_GID_SUPPORT |
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306 | struct group *gr = getgrnam ("tty"); |
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307 | |
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308 | if (gr) |
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309 | { /* change group ownership of tty to "tty" */ |
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310 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
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311 | gid = gr->gr_gid; |
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312 | } |
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313 | else |
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314 | #endif /* TTY_GID_SUPPORT */ |
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315 | { |
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316 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
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317 | gid = getgid (); |
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318 | } |
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319 | } |
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320 | } ttyconf; |
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321 | |
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322 | void |
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323 | rxvt_ptytty::privileges (rxvt_privaction action) |
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324 | { |
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325 | if (!name || !*name) |
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326 | return; |
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327 | |
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328 | rxvt_privileges (RESTORE); |
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329 | |
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330 | if (action == SAVE) |
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331 | { |
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332 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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333 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
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334 | if (lstat (name, &savestat) < 0) /* you lose out */ |
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335 | ; |
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336 | else |
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337 | # endif |
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338 | { |
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339 | saved = true; |
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340 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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341 | chmod (name, ttyconf.mode); |
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342 | # ifdef HAVE_REVOKE |
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343 | revoke (name); |
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344 | # endif |
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345 | } |
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346 | } |
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347 | else |
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348 | { /* action == RESTORE */ |
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349 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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350 | if (saved) |
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351 | { |
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352 | chmod (name, savestat.st_mode); |
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353 | chown (name, savestat.st_uid, savestat.st_gid); |
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354 | } |
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355 | # else |
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356 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
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357 | chown (name, 0, 0); |
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358 | # endif |
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359 | |
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360 | } |
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361 | |
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362 | rxvt_privileges (IGNORE); |
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363 | } |
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364 | #endif |
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365 | |
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366 | rxvt_ptytty::rxvt_ptytty () |
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367 | { |
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368 | pty = tty = -1; |
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369 | name = 0; |
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370 | #ifndef NO_SETOWNER_TTYDEV |
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371 | saved = false; |
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372 | #endif |
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373 | } |
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374 | |
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375 | rxvt_ptytty::~rxvt_ptytty () |
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376 | { |
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377 | put (); |
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378 | } |
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379 | |
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380 | void |
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381 | |
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382 | rxvt_ptytty::close_tty () |
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383 | { |
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384 | if (tty < 0) |
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385 | return; |
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386 | |
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387 | close (tty); |
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388 | tty = -1; |
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389 | } |
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390 | |
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391 | void |
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392 | rxvt_ptytty::put () |
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393 | { |
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394 | #ifndef NO_SETOWNER_TTYDEV |
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395 | privileges (RESTORE); |
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396 | #endif |
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397 | |
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398 | if (pty >= 0) close (pty); |
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399 | close_tty (); |
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400 | free (name); |
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401 | |
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402 | pty = tty = -1; |
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403 | name = 0; |
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404 | } |
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405 | |
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406 | bool |
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407 | rxvt_ptytty::make_controlling_tty () |
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408 | { |
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409 | return control_tty (tty, name) >= 0; |
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410 | } |
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411 | |
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412 | bool |
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413 | rxvt_ptytty::get () |
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414 | { |
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415 | /* get master (pty) */ |
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416 | if ((pty = get_pty (&tty, &name)) < 0) |
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417 | return false; |
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418 | |
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419 | fcntl (pty, F_SETFL, O_NONBLOCK); |
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420 | |
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421 | /* get slave (tty) */ |
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422 | if (tty < 0) |
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423 | { |
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424 | #ifndef NO_SETOWNER_TTYDEV |
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425 | privileges (SAVE); |
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426 | #endif |
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427 | |
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428 | if ((tty = get_tty (name)) < 0) |
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429 | { |
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430 | put (); |
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431 | return false; |
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432 | } |
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433 | } |
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434 | |
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435 | return true; |
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436 | } |
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437 | |
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438 | void |
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439 | rxvt_ptytty::set_utf8_mode (bool on) |
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440 | { |
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441 | #ifdef IUTF8 |
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442 | if (pty < 0) |
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443 | return; |
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444 | |
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445 | struct termios tio; |
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446 | |
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447 | if (tcgetattr (pty, &tio) != -1) |
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448 | { |
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449 | tcflag_t new_cflag = tio.c_iflag; |
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450 | |
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451 | if (on) |
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452 | new_cflag |= IUTF8; |
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453 | else |
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454 | new_cflag &= ~IUTF8; |
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455 | |
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456 | if (new_cflag != tio.c_iflag) |
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457 | { |
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458 | tio.c_iflag = new_cflag; |
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459 | tcsetattr (pty, TCSANOW, &tio); |
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460 | } |
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461 | } |
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462 | #endif |
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463 | } |
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464 | |
313 | /*----------------------- end-of-file (C source) -----------------------*/ |
465 | /*----------------------- end-of-file (C source) -----------------------*/ |
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466 | |