1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
2 | * File: ptytty.c |
2 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * |
4 | * |
5 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
6 | * 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> |
7 | * |
8 | * |
8 | * 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 |
9 | * 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 |
10 | * the Free Software Foundation; either version 2 of the License, or |
11 | * the Free Software Foundation; either version 2 of the License, or |
11 | * (at your option) any later version. |
12 | * (at your option) any later version. |
… | |
… | |
19 | * along with this program; if not, write to the Free Software |
20 | * along with this program; if not, write to the Free Software |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | *---------------------------------------------------------------------*/ |
22 | *---------------------------------------------------------------------*/ |
22 | |
23 | |
23 | #include "../config.h" /* NECESSARY */ |
24 | #include "../config.h" /* NECESSARY */ |
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25 | #include "rxvt.h" |
24 | |
26 | |
25 | /* |
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26 | * Try to be self-contained except for the above autoconfig'd defines |
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27 | */ |
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28 | |
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29 | #include <stdio.h> |
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30 | #ifdef HAVE_STDLIB_H |
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31 | # include <stdlib.h> |
27 | # include <cstdlib> |
32 | #endif |
28 | # include <cstring> |
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29 | |
33 | #ifdef HAVE_SYS_TYPES_H |
30 | #ifdef HAVE_SYS_TYPES_H |
34 | # include <sys/types.h> |
31 | # include <sys/types.h> |
35 | #endif |
32 | #endif |
36 | #ifdef HAVE_UNISTD_H |
33 | #ifdef HAVE_UNISTD_H |
37 | # include <unistd.h> |
34 | # include <unistd.h> |
38 | #endif |
35 | #endif |
39 | #if defined(HAVE_STRING_H) |
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40 | # include <string.h> |
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41 | #endif |
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42 | #ifdef HAVE_FCNTL_H |
36 | #ifdef HAVE_FCNTL_H |
43 | # include <fcntl.h> |
37 | # include <fcntl.h> |
44 | #endif |
38 | #endif |
45 | #ifdef HAVE_SYS_IOCTL_H |
39 | #ifdef HAVE_SYS_IOCTL_H |
46 | # include <sys/ioctl.h> |
40 | # include <sys/ioctl.h> |
47 | #endif |
41 | #endif |
48 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
49 | # include <sys/stropts.h> /* for I_PUSH */ |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
50 | #endif |
44 | #endif |
51 | |
45 | #ifdef HAVE_ISASTREAM |
52 | #ifdef DEBUG_TTY |
46 | # include <stropts.h> |
53 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
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54 | #else |
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55 | # define D_TTY(x) |
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56 | #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> |
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58 | |
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59 | ///////////////////////////////////////////////////////////////////////////// |
57 | |
60 | |
58 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
59 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
60 | * ------------------------------------------------------------------------- */ |
63 | * ------------------------------------------------------------------------- */ |
61 | /* |
64 | /* |
62 | * Returns pty file descriptor, or -1 on failure |
65 | * Returns pty file descriptor, or -1 on failure |
63 | * 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. |
64 | * 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 |
65 | */ |
68 | */ |
66 | /* EXTPROTO */ |
69 | static int |
67 | int |
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68 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
70 | get_pty (int *fd_tty, char **ttydev) |
69 | { |
71 | { |
70 | int pfd; |
72 | int pfd; |
71 | |
73 | |
72 | #ifdef PTYS_ARE_OPENPTY |
74 | #ifdef PTYS_ARE_OPENPTY |
73 | |
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74 | char tty_name[sizeof "/dev/pts/????\0"]; |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
75 | |
76 | |
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77 | rxvt_privileges(RESTORE); |
76 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
78 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
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79 | rxvt_privileges(IGNORE); |
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80 | |
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81 | if (res != -1) |
77 | { |
82 | { |
78 | *ttydev = strdup(tty_name); |
83 | *ttydev = strdup (tty_name); |
79 | return pfd; |
84 | return pfd; |
80 | } |
85 | } |
81 | #endif |
86 | #endif |
82 | |
87 | |
83 | #ifdef PTYS_ARE__GETPTY |
88 | #ifdef PTYS_ARE__GETPTY |
84 | *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
89 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
85 | if (*ttydev != NULL) |
90 | if (*ttydev != NULL) |
86 | return pfd; |
91 | return pfd; |
87 | #endif |
92 | #endif |
88 | |
93 | |
89 | #ifdef PTYS_ARE_GETPTY |
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90 | |
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91 | char *ptydev; |
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92 | |
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93 | while ((ptydev = getpty()) != NULL) |
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94 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
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95 | { |
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96 | *ttydev = ptydev; |
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97 | return pfd; |
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98 | } |
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99 | #endif |
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100 | |
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101 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
94 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
102 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
95 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
103 | |
96 | |
104 | { |
97 | { |
105 | # ifdef PTYS_ARE_GETPT |
98 | # ifdef PTYS_ARE_GETPT |
106 | pfd = getpt(); |
99 | pfd = getpt(); |
107 | # else |
100 | # else |
108 | |
101 | # ifdef PTYS_ARE_POSIX |
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102 | pfd = posix_openpt (O_RDWR); |
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103 | # else |
109 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
104 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
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105 | # endif |
110 | # endif |
106 | # endif |
111 | |
107 | |
112 | if (pfd >= 0) |
108 | if (pfd >= 0) |
113 | { |
109 | { |
114 | if (grantpt(pfd) == 0 /* change slave permissions */ |
110 | if (grantpt (pfd) == 0 /* change slave permissions */ |
115 | && unlockpt(pfd) == 0) |
111 | && unlockpt (pfd) == 0) |
116 | { /* slave now unlocked */ |
112 | { /* slave now unlocked */ |
117 | *ttydev = ptsname(pfd); /* get slave's name */ |
113 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
118 | return pfd; |
114 | return pfd; |
119 | } |
115 | } |
120 | close(pfd); |
116 | close (pfd); |
121 | } |
117 | } |
122 | } |
118 | } |
123 | # endif |
119 | # endif |
124 | #endif |
120 | #endif |
125 | |
121 | |
126 | #ifdef PTYS_ARE_PTC |
122 | #ifdef PTYS_ARE_PTC |
127 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
123 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
128 | { |
124 | { |
129 | *ttydev = ttyname(pfd); |
125 | *ttydev = strdup (ttyname (pfd)); |
130 | return pfd; |
126 | return pfd; |
131 | } |
127 | } |
132 | #endif |
128 | #endif |
133 | |
129 | |
134 | #ifdef PTYS_ARE_CLONE |
130 | #ifdef PTYS_ARE_CLONE |
135 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
131 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
136 | { |
132 | { |
137 | *ttydev = ptsname(pfd); |
133 | *ttydev = strdup (ptsname (pfd)); |
138 | return pfd; |
134 | return pfd; |
139 | } |
135 | } |
140 | #endif |
136 | #endif |
141 | |
137 | |
142 | #ifdef PTYS_ARE_NUMERIC |
138 | #ifdef PTYS_ARE_NUMERIC |
143 | { |
139 | { |
144 | int idx; |
140 | int idx; |
145 | char *c1, *c2; |
141 | char *c1, *c2; |
146 | char pty_name[] = "/dev/ptyp???"; |
142 | char pty_name[] = "/dev/ptyp???"; |
147 | char tty_name[] = "/dev/ttyp???"; |
143 | char tty_name[] = "/dev/ttyp???"; |
148 | |
144 | |
149 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
145 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
150 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
146 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
151 | for (idx = 0; idx < 256; idx++) |
147 | for (idx = 0; idx < 256; idx++) |
152 | { |
148 | { |
153 | sprintf(c1, "%d", idx); |
149 | sprintf (c1, "%d", idx); |
154 | sprintf(c2, "%d", idx); |
150 | sprintf (c2, "%d", idx); |
155 | if (access(tty_name, F_OK) < 0) |
151 | if (access (tty_name, F_OK) < 0) |
156 | { |
152 | { |
157 | idx = 256; |
153 | idx = 256; |
158 | break; |
154 | break; |
159 | } |
155 | } |
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156 | |
160 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
157 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
161 | { |
158 | { |
162 | if (access(tty_name, R_OK | W_OK) == 0) |
159 | if (access (tty_name, R_OK | W_OK) == 0) |
163 | { |
160 | { |
164 | *ttydev = strdup(tty_name); |
161 | *ttydev = strdup (tty_name); |
165 | return pfd; |
162 | return pfd; |
166 | } |
163 | } |
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164 | |
167 | close(pfd); |
165 | close (pfd); |
168 | } |
166 | } |
169 | } |
167 | } |
170 | } |
168 | } |
171 | #endif |
169 | #endif |
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170 | |
172 | #ifdef PTYS_ARE_SEARCHED |
171 | #ifdef PTYS_ARE_SEARCHED |
173 | { |
172 | { |
174 | const char *c1, *c2; |
173 | const char *c1, *c2; |
175 | char pty_name[] = "/dev/pty??"; |
174 | char pty_name[] = "/dev/pty??"; |
176 | char tty_name[] = "/dev/tty??"; |
175 | char tty_name[] = "/dev/tty??"; |
177 | |
176 | |
178 | # ifndef PTYCHAR1 |
177 | # ifndef PTYCHAR1 |
179 | # define PTYCHAR1 "pqrstuvwxyz" |
178 | # define PTYCHAR1 "pqrstuvwxyz" |
180 | # endif |
179 | # endif |
181 | # ifndef PTYCHAR2 |
180 | # ifndef PTYCHAR2 |
182 | # define PTYCHAR2 "0123456789abcdef" |
181 | # define PTYCHAR2 "0123456789abcdef" |
183 | # endif |
182 | # endif |
184 | |
183 | |
185 | for (c1 = PTYCHAR1; *c1; c1++) |
184 | for (c1 = PTYCHAR1; *c1; c1++) |
186 | { |
185 | { |
187 | pty_name[(sizeof(pty_name) - 3)] = |
186 | pty_name[ (sizeof (pty_name) - 3)] = |
188 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
187 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
189 | for (c2 = PTYCHAR2; *c2; c2++) |
188 | for (c2 = PTYCHAR2; *c2; c2++) |
190 | { |
189 | { |
191 | pty_name[(sizeof(pty_name) - 2)] = |
190 | pty_name[ (sizeof (pty_name) - 2)] = |
192 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
191 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
193 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
192 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
194 | { |
193 | { |
195 | if (access(tty_name, R_OK | W_OK) == 0) |
194 | if (access (tty_name, R_OK | W_OK) == 0) |
196 | { |
195 | { |
197 | *ttydev = strdup(tty_name); |
196 | *ttydev = strdup (tty_name); |
198 | return pfd; |
197 | return pfd; |
199 | } |
198 | } |
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199 | |
200 | close(pfd); |
200 | close (pfd); |
201 | } |
201 | } |
202 | } |
202 | } |
203 | } |
203 | } |
204 | } |
204 | } |
205 | #endif |
205 | #endif |
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206 | |
206 | return -1; |
207 | return -1; |
207 | } |
208 | } |
208 | |
209 | |
209 | /*----------------------------------------------------------------------*/ |
210 | /*----------------------------------------------------------------------*/ |
210 | /* |
211 | /* |
211 | * Returns tty file descriptor, or -1 on failure |
212 | * Returns tty file descriptor, or -1 on failure |
212 | */ |
213 | */ |
213 | /* EXTPROTO */ |
214 | static int |
214 | int |
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215 | rxvt_get_tty (const char *ttydev) |
215 | get_tty (char *ttydev) |
216 | { |
216 | { |
217 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
217 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
218 | } |
218 | } |
219 | |
219 | |
220 | /*----------------------------------------------------------------------*/ |
220 | /*----------------------------------------------------------------------*/ |
221 | /* |
221 | /* |
222 | * Make our tty a controlling tty so that /dev/tty points to us |
222 | * Make our tty a controlling tty so that /dev/tty points to us |
223 | */ |
223 | */ |
224 | /* EXTPROTO */ |
224 | static int |
225 | int |
225 | control_tty (int fd_tty) |
226 | rxvt_control_tty (int fd_tty, const char *ttydev) |
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227 | { |
226 | { |
228 | #ifndef __QNX__ |
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229 | int fd; |
227 | int fd; |
230 | |
228 | |
231 | D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
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232 | /* ---------------------------------------- */ |
229 | /* ---------------------------------------- */ |
233 | # ifdef HAVE_SETSID |
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234 | setsid (); |
230 | setsid (); |
235 | # endif |
231 | |
236 | # if defined(HAVE_SETPGID) |
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237 | setpgid (0, 0); |
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238 | # elif defined(HAVE_SETPGRP) |
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239 | setpgrp (0, 0); |
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240 | # endif |
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241 | /* ---------------------------------------- */ |
232 | /* ---------------------------------------- */ |
242 | # ifdef TIOCNOTTY |
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243 | |
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244 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
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245 | D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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246 | if (fd >= 0) |
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247 | { |
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248 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
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249 | close (fd); |
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250 | } |
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251 | # endif |
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252 | /* ---------------------------------------- */ |
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253 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
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254 | D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
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255 | if (fd >= 0) |
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256 | close (fd); /* ouch: still have controlling tty */ |
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257 | /* ---------------------------------------- */ |
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258 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
233 | # if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
259 | /* |
234 | /* |
260 | * Push STREAMS modules: |
235 | * Push STREAMS modules: |
261 | * ptem: pseudo-terminal hardware emulation module. |
236 | * ptem: pseudo-terminal hardware emulation module. |
262 | * ldterm: standard terminal line discipline. |
237 | * ldterm: standard terminal line discipline. |
263 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
238 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
264 | * |
239 | * |
265 | * After we push the STREAMS modules, the first open() on the slave side |
240 | * After we push the STREAMS modules, the first open () on the slave side |
266 | * (i.e. the next section between the dashes giving us "tty opened OK") |
241 | * (i.e. the next section between the dashes giving us "tty opened OK") |
267 | * should make the "ptem" (or "ldterm" depending upon either which OS |
242 | * should make the "ptem" (or "ldterm" depending upon either which OS |
268 | * version or which set of manual pages you have) module give us a |
243 | * version or which set of manual pages you have) module give us a |
269 | * controlling terminal. We must already have close()d the master side |
244 | * controlling terminal. We must already have close ()d the master side |
270 | * fd in this child process before we push STREAMS modules on because the |
245 | * fd in this child process before we push STREAMS modules on because the |
271 | * documentation is really unclear about whether it is any close() on |
246 | * documentation is really unclear about whether it is any close () on |
272 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
247 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
273 | * close() - on the master side which causes a hang up to be sent |
248 | * close () - on the master side which causes a hang up to be sent |
274 | * through - Geoff Wing |
249 | * through - Geoff Wing |
275 | */ |
250 | */ |
276 | # ifdef HAVE_ISASTREAM |
251 | # ifdef HAVE_ISASTREAM |
277 | if (isastream (fd_tty) == 1) |
252 | if (isastream (fd_tty) == 1) |
278 | # endif |
253 | # endif |
279 | { |
254 | { |
280 | D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
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281 | ioctl (fd_tty, I_PUSH, "ptem"); |
255 | ioctl (fd_tty, I_PUSH, "ptem"); |
282 | ioctl (fd_tty, I_PUSH, "ldterm"); |
256 | ioctl (fd_tty, I_PUSH, "ldterm"); |
283 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
257 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
284 | } |
258 | } |
285 | #endif |
259 | # endif |
286 | /* ---------------------------------------- */ |
260 | /* ---------------------------------------- */ |
287 | # if defined(TIOCSCTTY) |
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288 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
261 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
289 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
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290 | # elif defined(TIOCSETCTTY) |
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291 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
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292 | D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
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293 | # else |
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294 | fd = open (ttydev, O_RDWR); |
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295 | D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
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296 | if (fd >= 0) |
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297 | close(fd); |
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298 | # endif |
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299 | /* ---------------------------------------- */ |
262 | /* ---------------------------------------- */ |
300 | fd = open ("/dev/tty", O_WRONLY); |
263 | fd = open ("/dev/tty", O_WRONLY); |
301 | D_TTY ((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
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302 | if (fd < 0) |
264 | if (fd < 0) |
303 | return -1; /* fatal */ |
265 | return -1; /* fatal */ |
304 | close (fd); |
266 | close (fd); |
305 | /* ---------------------------------------- */ |
267 | /* ---------------------------------------- */ |
306 | D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
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307 | /* ---------------------------------------- */ |
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308 | #endif /* ! __QNX__ */ |
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309 | |
268 | |
310 | return 0; |
269 | return 0; |
311 | } |
270 | } |
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271 | |
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272 | void |
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273 | rxvt_ptytty::close_tty () |
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274 | { |
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275 | if (tty < 0) |
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276 | return; |
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277 | |
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278 | close (tty); |
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279 | tty = -1; |
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280 | } |
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281 | |
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282 | bool |
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283 | rxvt_ptytty::make_controlling_tty () |
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284 | { |
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285 | return control_tty (tty) >= 0; |
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286 | } |
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287 | |
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288 | void |
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289 | rxvt_ptytty::set_utf8_mode (bool on) |
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290 | { |
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291 | #ifdef IUTF8 |
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292 | if (pty < 0) |
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293 | return; |
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294 | |
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295 | struct termios tio; |
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296 | |
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297 | if (tcgetattr (pty, &tio) != -1) |
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298 | { |
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299 | tcflag_t new_cflag = tio.c_iflag; |
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300 | |
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301 | if (on) |
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302 | new_cflag |= IUTF8; |
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303 | else |
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304 | new_cflag &= ~IUTF8; |
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305 | |
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306 | if (new_cflag != tio.c_iflag) |
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307 | { |
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308 | tio.c_iflag = new_cflag; |
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309 | tcsetattr (pty, TCSANOW, &tio); |
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310 | } |
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311 | } |
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312 | #endif |
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313 | } |
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314 | |
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315 | ///////////////////////////////////////////////////////////////////////////// |
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316 | |
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317 | #ifndef NO_SETOWNER_TTYDEV |
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318 | static struct ttyconf { |
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319 | gid_t gid; |
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320 | mode_t mode; |
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321 | |
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322 | ttyconf () |
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323 | { |
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324 | #ifdef TTY_GID_SUPPORT |
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325 | struct group *gr = getgrnam ("tty"); |
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326 | |
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327 | if (gr) |
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328 | { /* change group ownership of tty to "tty" */ |
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329 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
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330 | gid = gr->gr_gid; |
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331 | } |
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332 | else |
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333 | #endif /* TTY_GID_SUPPORT */ |
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334 | { |
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335 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
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336 | gid = getgid (); |
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337 | } |
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338 | } |
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339 | } ttyconf; |
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340 | |
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341 | ///////////////////////////////////////////////////////////////////////////// |
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342 | |
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343 | void |
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344 | rxvt_ptytty_unix::privileges (rxvt_privaction action) |
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345 | { |
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346 | if (!name || !*name) |
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347 | return; |
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348 | |
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349 | rxvt_privileges (RESTORE); |
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350 | |
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351 | if (action == SAVE) |
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352 | { |
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353 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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354 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
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355 | if (lstat (name, &savestat) < 0) /* you lose out */ |
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356 | ; |
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357 | else |
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358 | # endif |
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359 | { |
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360 | saved = true; |
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361 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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362 | chmod (name, ttyconf.mode); |
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363 | # ifdef HAVE_REVOKE |
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364 | revoke (name); |
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365 | # endif |
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366 | } |
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367 | } |
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368 | else |
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369 | { /* action == RESTORE */ |
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370 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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371 | if (saved) |
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372 | { |
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373 | chmod (name, savestat.st_mode); |
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374 | chown (name, savestat.st_uid, savestat.st_gid); |
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375 | } |
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376 | # else |
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377 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
|
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378 | chown (name, 0, 0); |
|
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379 | # endif |
|
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380 | |
|
|
381 | } |
|
|
382 | |
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|
383 | rxvt_privileges (IGNORE); |
|
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384 | } |
|
|
385 | #endif |
|
|
386 | |
|
|
387 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
|
|
388 | { |
|
|
389 | pty = tty = -1; |
|
|
390 | name = 0; |
|
|
391 | #ifndef NO_SETOWNER_TTYDEV |
|
|
392 | saved = false; |
|
|
393 | #endif |
|
|
394 | #if UTMP_SUPPORT |
|
|
395 | cmd_pid = 0; |
|
|
396 | #endif |
|
|
397 | } |
|
|
398 | |
|
|
399 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
|
|
400 | { |
|
|
401 | logout (); |
|
|
402 | put (); |
|
|
403 | } |
|
|
404 | |
|
|
405 | void |
|
|
406 | rxvt_ptytty_unix::put () |
|
|
407 | { |
|
|
408 | #ifndef NO_SETOWNER_TTYDEV |
|
|
409 | privileges (RESTORE); |
|
|
410 | #endif |
|
|
411 | |
|
|
412 | if (pty >= 0) close (pty); |
|
|
413 | close_tty (); |
|
|
414 | free (name); |
|
|
415 | |
|
|
416 | pty = tty = -1; |
|
|
417 | name = 0; |
|
|
418 | } |
|
|
419 | |
|
|
420 | bool |
|
|
421 | rxvt_ptytty_unix::get () |
|
|
422 | { |
|
|
423 | /* get master (pty) */ |
|
|
424 | if ((pty = get_pty (&tty, &name)) < 0) |
|
|
425 | return false; |
|
|
426 | |
|
|
427 | fcntl (pty, F_SETFL, O_NONBLOCK); |
|
|
428 | |
|
|
429 | /* get slave (tty) */ |
|
|
430 | if (tty < 0) |
|
|
431 | { |
|
|
432 | #ifndef NO_SETOWNER_TTYDEV |
|
|
433 | privileges (SAVE); |
|
|
434 | #endif |
|
|
435 | |
|
|
436 | if ((tty = get_tty (name)) < 0) |
|
|
437 | { |
|
|
438 | put (); |
|
|
439 | return false; |
|
|
440 | } |
|
|
441 | } |
|
|
442 | |
|
|
443 | return true; |
|
|
444 | } |
|
|
445 | |
312 | /*----------------------- end-of-file (C source) -----------------------*/ |
446 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
447 | |