1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
2 | * File: ptytty.c |
2 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * $Id: ptytty.C,v 1.2 2003/11/24 17:31:27 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 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 |
27 | #ifdef HAVE_STDLIB_H |
32 | # include <stdlib.h> |
28 | # include <cstdlib> |
33 | #endif |
29 | #endif |
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) |
36 | #if defined(HAVE_STRING_H) |
41 | # include <string.h> |
37 | # include <cstring> |
42 | #endif |
38 | #endif |
43 | #ifdef HAVE_FCNTL_H |
39 | #ifdef HAVE_FCNTL_H |
44 | # include <fcntl.h> |
40 | # include <fcntl.h> |
45 | #endif |
41 | #endif |
46 | #ifdef HAVE_SYS_IOCTL_H |
42 | #ifdef HAVE_SYS_IOCTL_H |
47 | # include <sys/ioctl.h> |
43 | # include <sys/ioctl.h> |
48 | #endif |
44 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
45 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
46 | # include <sys/stropts.h> /* for I_PUSH */ |
51 | #endif |
47 | #endif |
52 | |
48 | #ifdef HAVE_ISASTREAM |
53 | |
49 | # include <stropts.h> |
54 | #ifdef DEBUG_TTY |
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55 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
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56 | #else |
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57 | # define D_TTY(x) |
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58 | #endif |
50 | #endif |
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51 | #ifdef HAVE_PTY_H |
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52 | # include <pty.h> |
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53 | #endif |
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54 | |
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55 | // better do this via configure, but.... |
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56 | #if defined(__FreeBSD__) |
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57 | # include <libutil.h> |
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58 | #elif defined(__DARWIN__) || (defined (__MACH__) && defined (__APPLE__)) |
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59 | # include <util.h> |
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60 | #endif |
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61 | |
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62 | #include <cstdio> |
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63 | #include <grp.h> |
59 | |
64 | |
60 | /* ------------------------------------------------------------------------- * |
65 | /* ------------------------------------------------------------------------- * |
61 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
66 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * ------------------------------------------------------------------------- */ |
67 | * ------------------------------------------------------------------------- */ |
63 | /* |
68 | /* |
64 | * Returns pty file descriptor, or -1 on failure |
69 | * Returns pty file descriptor, or -1 on failure |
65 | * 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. |
66 | * 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 |
67 | */ |
72 | */ |
68 | /* EXTPROTO */ |
73 | static int |
69 | int |
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70 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
74 | get_pty (int *fd_tty, char **ttydev) |
71 | { |
75 | { |
72 | int pfd; |
76 | int pfd; |
73 | |
77 | |
74 | #ifdef PTYS_ARE_OPENPTY |
78 | #ifdef PTYS_ARE_OPENPTY |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
79 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | |
80 | |
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81 | rxvt_privileges(RESTORE); |
77 | if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) { |
82 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
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83 | rxvt_privileges(IGNORE); |
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84 | |
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85 | if (res != -1) |
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86 | { |
78 | *ttydev = strdup(tty_name); |
87 | *ttydev = strdup (tty_name); |
79 | return pfd; |
88 | return pfd; |
80 | } |
89 | } |
81 | #endif |
90 | #endif |
82 | |
91 | |
83 | #ifdef PTYS_ARE__GETPTY |
92 | #ifdef PTYS_ARE__GETPTY |
84 | *ttydev = _getpty(&pfd, O_RDWR | O_NDELAY | O_NOCTTY, 0622, 0); |
93 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
85 | if (*ttydev != NULL) |
94 | if (*ttydev != NULL) |
86 | return pfd; |
95 | return pfd; |
87 | #endif |
96 | #endif |
88 | |
97 | |
89 | #ifdef PTYS_ARE_GETPTY |
98 | #ifdef PTYS_ARE_GETPTY |
90 | char *ptydev; |
99 | char *ptydev; |
91 | |
100 | |
92 | while ((ptydev = getpty()) != NULL) |
101 | while ((ptydev = getpty ()) != NULL) |
93 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) { |
102 | if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
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103 | { |
94 | *ttydev = ptydev; |
104 | *ttydev = ptydev; |
95 | return pfd; |
105 | return pfd; |
96 | } |
106 | } |
97 | #endif |
107 | #endif |
98 | |
108 | |
99 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
109 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
100 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
110 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
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111 | |
101 | { |
112 | { |
102 | # ifdef PTYS_ARE_GETPT |
113 | # ifdef PTYS_ARE_GETPT |
103 | pfd = getpt(); |
114 | pfd = getpt (); |
104 | # else |
115 | # else |
105 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
116 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
106 | # endif |
117 | # endif |
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118 | |
107 | if (pfd >= 0) { |
119 | if (pfd >= 0) |
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120 | { |
108 | if (grantpt(pfd) == 0 /* change slave permissions */ |
121 | if (grantpt (pfd) == 0 /* change slave permissions */ |
109 | && unlockpt(pfd) == 0) { /* slave now unlocked */ |
122 | && unlockpt (pfd) == 0) |
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123 | { /* slave now unlocked */ |
110 | *ttydev = ptsname(pfd); /* get slave's name */ |
124 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
111 | return pfd; |
125 | return pfd; |
112 | } |
126 | } |
113 | close(pfd); |
127 | close (pfd); |
114 | } |
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115 | } |
128 | } |
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129 | } |
116 | # endif |
130 | # endif |
117 | #endif |
131 | #endif |
118 | |
132 | |
119 | #ifdef PTYS_ARE_PTC |
133 | #ifdef PTYS_ARE_PTC |
120 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { |
134 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
121 | *ttydev = ttyname(pfd); |
135 | { |
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136 | *ttydev = strdup (ttyname (pfd)); |
122 | return pfd; |
137 | return pfd; |
123 | } |
138 | } |
124 | #endif |
139 | #endif |
125 | |
140 | |
126 | #ifdef PTYS_ARE_CLONE |
141 | #ifdef PTYS_ARE_CLONE |
127 | if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) { |
142 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
128 | *ttydev = ptsname(pfd); |
143 | { |
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144 | *ttydev = strdup (ptsname (pfd)); |
129 | return pfd; |
145 | return pfd; |
130 | } |
146 | } |
131 | #endif |
147 | #endif |
132 | |
148 | |
133 | #ifdef PTYS_ARE_NUMERIC |
149 | #ifdef PTYS_ARE_NUMERIC |
134 | { |
150 | { |
135 | int idx; |
151 | int idx; |
136 | char *c1, *c2; |
152 | char *c1, *c2; |
137 | char pty_name[] = "/dev/ptyp???"; |
153 | char pty_name[] = "/dev/ptyp???"; |
138 | char tty_name[] = "/dev/ttyp???"; |
154 | char tty_name[] = "/dev/ttyp???"; |
139 | |
155 | |
140 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
156 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
141 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
157 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
142 | for (idx = 0; idx < 256; idx++) { |
158 | for (idx = 0; idx < 256; idx++) |
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159 | { |
143 | sprintf(c1, "%d", idx); |
160 | sprintf (c1, "%d", idx); |
144 | sprintf(c2, "%d", idx); |
161 | sprintf (c2, "%d", idx); |
145 | if (access(tty_name, F_OK) < 0) { |
162 | if (access (tty_name, F_OK) < 0) |
146 | idx = 256; |
163 | { |
147 | break; |
164 | idx = 256; |
148 | } |
165 | break; |
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166 | } |
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167 | |
149 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
168 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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169 | { |
150 | if (access(tty_name, R_OK | W_OK) == 0) { |
170 | if (access (tty_name, R_OK | W_OK) == 0) |
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171 | { |
151 | *ttydev = strdup(tty_name); |
172 | *ttydev = strdup (tty_name); |
152 | return pfd; |
173 | return pfd; |
153 | } |
174 | } |
154 | close(pfd); |
175 | |
155 | } |
176 | close (pfd); |
156 | } |
177 | } |
157 | } |
178 | } |
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179 | } |
158 | #endif |
180 | #endif |
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181 | |
159 | #ifdef PTYS_ARE_SEARCHED |
182 | #ifdef PTYS_ARE_SEARCHED |
160 | { |
183 | { |
161 | const char *c1, *c2; |
184 | const char *c1, *c2; |
162 | char pty_name[] = "/dev/pty??"; |
185 | char pty_name[] = "/dev/pty??"; |
163 | char tty_name[] = "/dev/tty??"; |
186 | char tty_name[] = "/dev/tty??"; |
164 | |
187 | |
165 | # ifndef PTYCHAR1 |
188 | # ifndef PTYCHAR1 |
166 | # define PTYCHAR1 "pqrstuvwxyz" |
189 | # define PTYCHAR1 "pqrstuvwxyz" |
167 | # endif |
190 | # endif |
168 | # ifndef PTYCHAR2 |
191 | # ifndef PTYCHAR2 |
169 | # define PTYCHAR2 "0123456789abcdef" |
192 | # define PTYCHAR2 "0123456789abcdef" |
170 | # endif |
193 | # endif |
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194 | |
171 | for (c1 = PTYCHAR1; *c1; c1++) { |
195 | for (c1 = PTYCHAR1; *c1; c1++) |
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196 | { |
172 | pty_name[(sizeof(pty_name) - 3)] = |
197 | pty_name[ (sizeof (pty_name) - 3)] = |
173 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
198 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
174 | for (c2 = PTYCHAR2; *c2; c2++) { |
199 | for (c2 = PTYCHAR2; *c2; c2++) |
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200 | { |
175 | pty_name[(sizeof(pty_name) - 2)] = |
201 | pty_name[ (sizeof (pty_name) - 2)] = |
176 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
202 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
177 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
203 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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204 | { |
178 | if (access(tty_name, R_OK | W_OK) == 0) { |
205 | if (access (tty_name, R_OK | W_OK) == 0) |
179 | *ttydev = strdup(tty_name); |
206 | { |
180 | return pfd; |
207 | *ttydev = strdup (tty_name); |
181 | } |
208 | return pfd; |
182 | close(pfd); |
209 | } |
183 | } |
210 | |
184 | } |
211 | close (pfd); |
185 | } |
212 | } |
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213 | } |
186 | } |
214 | } |
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215 | } |
187 | #endif |
216 | #endif |
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217 | |
188 | return -1; |
218 | return -1; |
189 | } |
219 | } |
190 | |
220 | |
191 | /*----------------------------------------------------------------------*/ |
221 | /*----------------------------------------------------------------------*/ |
192 | /* |
222 | /* |
193 | * Returns tty file descriptor, or -1 on failure |
223 | * Returns tty file descriptor, or -1 on failure |
194 | */ |
224 | */ |
195 | /* EXTPROTO */ |
225 | static int |
196 | int |
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197 | rxvt_get_tty(const char *ttydev) |
226 | get_tty (char *ttydev) |
198 | { |
227 | { |
199 | return open(ttydev, O_RDWR | O_NOCTTY, 0); |
228 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
200 | } |
229 | } |
201 | |
230 | |
202 | /*----------------------------------------------------------------------*/ |
231 | /*----------------------------------------------------------------------*/ |
203 | /* |
232 | /* |
204 | * Make our tty a controlling tty so that /dev/tty points to us |
233 | * Make our tty a controlling tty so that /dev/tty points to us |
205 | */ |
234 | */ |
206 | /* EXTPROTO */ |
235 | static int |
207 | int |
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208 | rxvt_control_tty(int fd_tty, const char *ttydev) |
236 | control_tty (int fd_tty, const char *ttydev) |
209 | { |
237 | { |
210 | #ifndef __QNX__ |
238 | #ifndef __QNX__ |
211 | int fd; |
239 | int fd; |
212 | |
240 | |
213 | D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
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214 | /* ---------------------------------------- */ |
241 | /* ---------------------------------------- */ |
215 | # ifdef HAVE_SETSID |
242 | # ifdef HAVE_SETSID |
216 | setsid(); |
243 | setsid (); |
217 | # endif |
244 | # endif |
218 | # if defined(HAVE_SETPGID) |
245 | # if defined(HAVE_SETPGID) |
219 | setpgid(0, 0); |
246 | setpgid (0, 0); |
220 | # elif defined(HAVE_SETPGRP) |
247 | # elif defined(HAVE_SETPGRP) |
221 | setpgrp(0, 0); |
248 | setpgrp (0, 0); |
222 | # endif |
249 | # endif |
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250 | |
223 | /* ---------------------------------------- */ |
251 | /* ---------------------------------------- */ |
224 | # ifdef TIOCNOTTY |
252 | # ifdef TIOCNOTTY |
225 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
253 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
226 | D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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227 | if (fd >= 0) { |
254 | if (fd >= 0) |
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255 | { |
228 | ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */ |
256 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
229 | close(fd); |
257 | close (fd); |
230 | } |
258 | } |
231 | # endif |
259 | # endif |
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260 | |
232 | /* ---------------------------------------- */ |
261 | /* ---------------------------------------- */ |
233 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
262 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
234 | D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
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235 | if (fd >= 0) |
263 | if (fd >= 0) |
236 | close(fd); /* ouch: still have controlling tty */ |
264 | close (fd); /* ouch: still have controlling tty */ |
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265 | |
237 | /* ---------------------------------------- */ |
266 | /* ---------------------------------------- */ |
238 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
267 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
239 | /* |
268 | /* |
240 | * Push STREAMS modules: |
269 | * Push STREAMS modules: |
241 | * ptem: pseudo-terminal hardware emulation module. |
270 | * ptem: pseudo-terminal hardware emulation module. |
242 | * ldterm: standard terminal line discipline. |
271 | * ldterm: standard terminal line discipline. |
243 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
272 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
244 | * |
273 | * |
245 | * After we push the STREAMS modules, the first open() on the slave side |
274 | * After we push the STREAMS modules, the first open () on the slave side |
246 | * (i.e. the next section between the dashes giving us "tty opened OK") |
275 | * (i.e. the next section between the dashes giving us "tty opened OK") |
247 | * should make the "ptem" (or "ldterm" depending upon either which OS |
276 | * should make the "ptem" (or "ldterm" depending upon either which OS |
248 | * version or which set of manual pages you have) module give us a |
277 | * version or which set of manual pages you have) module give us a |
249 | * controlling terminal. We must already have close()d the master side |
278 | * controlling terminal. We must already have close ()d the master side |
250 | * fd in this child process before we push STREAMS modules on because the |
279 | * fd in this child process before we push STREAMS modules on because the |
251 | * documentation is really unclear about whether it is any close() on |
280 | * documentation is really unclear about whether it is any close () on |
252 | * the master side or the last close() - i.e. a proper STREAMS dismantling |
281 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
253 | * close() - on the master side which causes a hang up to be sent |
282 | * close () - on the master side which causes a hang up to be sent |
254 | * through - Geoff Wing |
283 | * through - Geoff Wing |
255 | */ |
284 | */ |
256 | # ifdef HAVE_ISASTREAM |
285 | # ifdef HAVE_ISASTREAM |
257 | if (isastream(fd_tty) == 1) |
286 | if (isastream (fd_tty) == 1) |
258 | # endif |
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259 | { |
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260 | D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
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261 | ioctl(fd_tty, I_PUSH, "ptem"); |
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262 | ioctl(fd_tty, I_PUSH, "ldterm"); |
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263 | ioctl(fd_tty, I_PUSH, "ttcompat"); |
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264 | } |
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265 | #endif |
287 | # endif |
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288 | { |
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289 | ioctl (fd_tty, I_PUSH, "ptem"); |
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290 | ioctl (fd_tty, I_PUSH, "ldterm"); |
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291 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
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292 | } |
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293 | #endif |
266 | /* ---------------------------------------- */ |
294 | /* ---------------------------------------- */ |
267 | # if defined(TIOCSCTTY) |
295 | # if defined(TIOCSCTTY) |
268 | fd = ioctl(fd_tty, TIOCSCTTY, NULL); |
296 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
269 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
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270 | # elif defined(TIOCSETCTTY) |
297 | # elif defined(TIOCSETCTTY) |
271 | fd = ioctl(fd_tty, TIOCSETCTTY, NULL); |
298 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
272 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
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273 | # else |
299 | # else |
274 | fd = open(ttydev, O_RDWR); |
300 | fd = open (ttydev, O_RDWR); |
275 | D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
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276 | if (fd >= 0) |
301 | if (fd >= 0) |
277 | close(fd); |
302 | close (fd); |
278 | # endif |
303 | # endif |
279 | /* ---------------------------------------- */ |
304 | /* ---------------------------------------- */ |
280 | fd = open("/dev/tty", O_WRONLY); |
305 | fd = open ("/dev/tty", O_WRONLY); |
281 | D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
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282 | if (fd < 0) |
306 | if (fd < 0) |
283 | return -1; /* fatal */ |
307 | return -1; /* fatal */ |
284 | close(fd); |
308 | close (fd); |
285 | /* ---------------------------------------- */ |
309 | /* ---------------------------------------- */ |
286 | D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
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287 | /* ---------------------------------------- */ |
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288 | #endif /* ! __QNX__ */ |
310 | #endif /* ! __QNX__ */ |
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311 | |
289 | return 0; |
312 | return 0; |
290 | } |
313 | } |
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314 | |
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315 | #ifndef NO_SETOWNER_TTYDEV |
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316 | static struct ttyconf { |
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317 | gid_t gid; |
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318 | mode_t mode; |
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319 | |
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320 | ttyconf () |
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321 | { |
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322 | #ifdef TTY_GID_SUPPORT |
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323 | struct group *gr = getgrnam ("tty"); |
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324 | |
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325 | if (gr) |
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326 | { /* change group ownership of tty to "tty" */ |
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327 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
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328 | gid = gr->gr_gid; |
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329 | } |
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330 | else |
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331 | #endif /* TTY_GID_SUPPORT */ |
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332 | { |
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333 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
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334 | gid = getgid (); |
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335 | } |
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336 | } |
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337 | } ttyconf; |
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338 | |
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339 | void |
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340 | rxvt_ptytty::privileges (rxvt_privaction action) |
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341 | { |
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342 | if (!name || !*name) |
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343 | return; |
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344 | |
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345 | rxvt_privileges (RESTORE); |
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346 | |
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347 | if (action == SAVE) |
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348 | { |
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349 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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350 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
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351 | if (lstat (name, &savestat) < 0) /* you lose out */ |
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352 | ; |
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353 | else |
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354 | # endif |
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355 | { |
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356 | saved = true; |
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357 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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358 | chmod (name, ttyconf.mode); |
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359 | # ifdef HAVE_REVOKE |
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360 | revoke (name); |
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361 | # endif |
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362 | } |
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363 | } |
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364 | else |
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365 | { /* action == RESTORE */ |
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366 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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367 | if (saved) |
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368 | { |
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369 | chmod (name, savestat.st_mode); |
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370 | chown (name, savestat.st_uid, savestat.st_gid); |
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371 | } |
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372 | # else |
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373 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
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374 | chown (name, 0, 0); |
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375 | # endif |
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376 | |
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377 | } |
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378 | |
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379 | rxvt_privileges (IGNORE); |
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380 | } |
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381 | #endif |
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382 | |
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383 | rxvt_ptytty::rxvt_ptytty () |
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384 | { |
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385 | pty = tty = -1; |
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386 | name = 0; |
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387 | #ifndef NO_SETOWNER_TTYDEV |
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388 | saved = false; |
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389 | #endif |
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390 | } |
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391 | |
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392 | rxvt_ptytty::~rxvt_ptytty () |
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393 | { |
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394 | put (); |
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395 | } |
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396 | |
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397 | void |
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398 | |
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399 | rxvt_ptytty::close_tty () |
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400 | { |
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401 | if (tty >= 0) close (tty); |
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402 | tty = -1; |
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403 | } |
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404 | |
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405 | void |
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406 | rxvt_ptytty::put () |
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407 | { |
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408 | #ifndef NO_SETOWNER_TTYDEV |
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409 | if (tty >= 0) |
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410 | privileges (RESTORE); |
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411 | #endif |
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412 | |
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413 | if (pty >= 0) close (pty); |
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414 | close_tty (); |
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415 | free (name); |
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416 | |
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417 | pty = tty = -1; |
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418 | name = 0; |
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419 | } |
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420 | |
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421 | bool |
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422 | rxvt_ptytty::make_controlling_tty () |
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423 | { |
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424 | return control_tty (tty, name) >= 0; |
|
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425 | } |
|
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426 | |
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427 | bool |
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428 | rxvt_ptytty::get () |
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429 | { |
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|
430 | /* get master (pty) */ |
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431 | if ((pty = get_pty (&tty, &name)) < 0) |
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432 | return false; |
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433 | |
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434 | fcntl (pty, F_SETFL, O_NONBLOCK); |
|
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435 | |
|
|
436 | /* get slave (tty) */ |
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|
437 | if (tty < 0) |
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|
438 | { |
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|
439 | #ifndef NO_SETOWNER_TTYDEV |
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440 | privileges (SAVE); |
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|
441 | #endif |
|
|
442 | |
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|
443 | if ((tty = get_tty (name)) < 0) |
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|
444 | { |
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|
445 | put (); |
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|
446 | return false; |
|
|
447 | } |
|
|
448 | } |
|
|
449 | |
|
|
450 | return true; |
|
|
451 | } |
|
|
452 | |
|
|
453 | void |
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|
454 | rxvt_ptytty::set_utf8_mode (bool on) |
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|
455 | { |
|
|
456 | #ifdef IUTF8 |
|
|
457 | if (pty != -1) |
|
|
458 | { |
|
|
459 | struct termios tio; |
|
|
460 | |
|
|
461 | if (tcgetattr (pty, &tio) != -1) |
|
|
462 | { |
|
|
463 | tcflag_t new_cflag = tio.c_iflag; |
|
|
464 | |
|
|
465 | if (on) |
|
|
466 | new_cflag |= IUTF8; |
|
|
467 | else |
|
|
468 | new_cflag &= ~IUTF8; |
|
|
469 | |
|
|
470 | if (new_cflag != tio.c_iflag) |
|
|
471 | { |
|
|
472 | tio.c_iflag = new_cflag; |
|
|
473 | tcsetattr (pty, TCSANOW, &tio); |
|
|
474 | } |
|
|
475 | } |
|
|
476 | } |
|
|
477 | #endif |
|
|
478 | } |
|
|
479 | |
291 | /*----------------------- end-of-file (C source) -----------------------*/ |
480 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
481 | |