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) 2004-2006 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> |
34 | #ifdef HAVE_SYS_TYPES_H |
29 | |
35 | # include <sys/types.h> |
30 | #include <sys/types.h> |
36 | #endif |
31 | #include <sys/socket.h> |
37 | #ifdef HAVE_UNISTD_H |
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38 | # include <unistd.h> |
32 | #include <unistd.h> |
39 | #endif |
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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 |
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44 | # include <fcntl.h> |
33 | #include <fcntl.h> |
45 | #endif |
34 | |
46 | #ifdef HAVE_SYS_IOCTL_H |
35 | #ifdef HAVE_SYS_IOCTL_H |
47 | # include <sys/ioctl.h> |
36 | # include <sys/ioctl.h> |
48 | #endif |
37 | #endif |
49 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
38 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
50 | # include <sys/stropts.h> /* for I_PUSH */ |
39 | # include <sys/stropts.h> /* for I_PUSH */ |
51 | #endif |
40 | #endif |
52 | |
41 | #ifdef HAVE_ISASTREAM |
53 | |
42 | # 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 |
43 | #endif |
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44 | #if defined(HAVE_PTY_H) |
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45 | # include <pty.h> |
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46 | #elif defined(HAVE_LIBUTIL_H) |
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47 | # include <libutil.h> |
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48 | #elif defined(HAVE_UTIL_H) |
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49 | # include <util.h> |
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50 | #endif |
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51 | |
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52 | #include <cstdio> |
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53 | #include <grp.h> |
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54 | |
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55 | #include "rxvtutil.h" |
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56 | #include "fdpass.h" |
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57 | #include "ptytty.h" |
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58 | |
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59 | ///////////////////////////////////////////////////////////////////////////// |
59 | |
60 | |
60 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
61 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * ------------------------------------------------------------------------- */ |
63 | * ------------------------------------------------------------------------- */ |
63 | /* |
64 | /* |
64 | * Returns pty file descriptor, or -1 on failure |
65 | * Returns pty file descriptor, or -1 on failure |
65 | * 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. |
66 | * 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 |
67 | */ |
68 | */ |
68 | /* EXTPROTO */ |
69 | static int |
69 | int |
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70 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
70 | get_pty (int *fd_tty, char **ttydev) |
71 | { |
71 | { |
72 | int pfd; |
72 | int pfd; |
73 | |
73 | |
74 | #ifdef PTYS_ARE_OPENPTY |
74 | #ifdef PTYS_ARE_OPENPTY |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
76 | |
76 | |
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77 | rxvt_privileges(RESTORE); |
77 | 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) |
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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_NDELAY | 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; |
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87 | #endif |
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88 | |
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89 | #ifdef PTYS_ARE_GETPTY |
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90 | char *ptydev; |
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91 | |
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92 | while ((ptydev = getpty()) != NULL) |
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93 | if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) { |
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94 | *ttydev = ptydev; |
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95 | return pfd; |
91 | return pfd; |
96 | } |
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97 | #endif |
92 | #endif |
98 | |
93 | |
99 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
94 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
100 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
95 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
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96 | |
101 | { |
97 | { |
102 | # ifdef PTYS_ARE_GETPT |
98 | # ifdef PTYS_ARE_GETPT |
103 | pfd = getpt(); |
99 | pfd = getpt(); |
104 | # else |
100 | # else |
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101 | # ifdef PTYS_ARE_POSIX |
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102 | pfd = posix_openpt (O_RDWR); |
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103 | # else |
105 | pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
104 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
106 | # endif |
105 | # endif |
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106 | # endif |
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107 | |
107 | if (pfd >= 0) { |
108 | if (pfd >= 0) |
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109 | { |
108 | if (grantpt(pfd) == 0 /* change slave permissions */ |
110 | if (grantpt (pfd) == 0 /* change slave permissions */ |
109 | && unlockpt(pfd) == 0) { /* slave now unlocked */ |
111 | && unlockpt (pfd) == 0) |
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112 | { /* slave now unlocked */ |
110 | *ttydev = ptsname(pfd); /* get slave's name */ |
113 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
111 | return pfd; |
114 | return pfd; |
112 | } |
115 | } |
113 | close(pfd); |
116 | close (pfd); |
114 | } |
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115 | } |
117 | } |
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118 | } |
116 | # endif |
119 | # endif |
117 | #endif |
120 | #endif |
118 | |
121 | |
119 | #ifdef PTYS_ARE_PTC |
122 | #ifdef PTYS_ARE_PTC |
120 | if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { |
123 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
121 | *ttydev = ttyname(pfd); |
124 | { |
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125 | *ttydev = strdup (ttyname (pfd)); |
122 | return pfd; |
126 | return pfd; |
123 | } |
127 | } |
124 | #endif |
128 | #endif |
125 | |
129 | |
126 | #ifdef PTYS_ARE_CLONE |
130 | #ifdef PTYS_ARE_CLONE |
127 | 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) |
128 | *ttydev = ptsname(pfd); |
132 | { |
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133 | *ttydev = strdup (ptsname (pfd)); |
129 | return pfd; |
134 | return pfd; |
130 | } |
135 | } |
131 | #endif |
136 | #endif |
132 | |
137 | |
133 | #ifdef PTYS_ARE_NUMERIC |
138 | #ifdef PTYS_ARE_NUMERIC |
134 | { |
139 | { |
135 | int idx; |
140 | int idx; |
136 | char *c1, *c2; |
141 | char *c1, *c2; |
137 | char pty_name[] = "/dev/ptyp???"; |
142 | char pty_name[] = "/dev/ptyp???"; |
138 | char tty_name[] = "/dev/ttyp???"; |
143 | char tty_name[] = "/dev/ttyp???"; |
139 | |
144 | |
140 | c1 = &(pty_name[sizeof(pty_name) - 4]); |
145 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
141 | c2 = &(tty_name[sizeof(tty_name) - 4]); |
146 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
142 | for (idx = 0; idx < 256; idx++) { |
147 | for (idx = 0; idx < 256; idx++) |
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148 | { |
143 | sprintf(c1, "%d", idx); |
149 | sprintf (c1, "%d", idx); |
144 | sprintf(c2, "%d", idx); |
150 | sprintf (c2, "%d", idx); |
145 | if (access(tty_name, F_OK) < 0) { |
151 | if (access (tty_name, F_OK) < 0) |
146 | idx = 256; |
152 | { |
147 | break; |
153 | idx = 256; |
148 | } |
154 | break; |
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155 | } |
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156 | |
149 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
157 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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158 | { |
150 | if (access(tty_name, R_OK | W_OK) == 0) { |
159 | if (access (tty_name, R_OK | W_OK) == 0) |
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160 | { |
151 | *ttydev = strdup(tty_name); |
161 | *ttydev = strdup (tty_name); |
152 | return pfd; |
162 | return pfd; |
153 | } |
163 | } |
154 | close(pfd); |
164 | |
155 | } |
165 | close (pfd); |
156 | } |
166 | } |
157 | } |
167 | } |
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168 | } |
158 | #endif |
169 | #endif |
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170 | |
159 | #ifdef PTYS_ARE_SEARCHED |
171 | #ifdef PTYS_ARE_SEARCHED |
160 | { |
172 | { |
161 | const char *c1, *c2; |
173 | const char *c1, *c2; |
162 | char pty_name[] = "/dev/pty??"; |
174 | char pty_name[] = "/dev/pty??"; |
163 | char tty_name[] = "/dev/tty??"; |
175 | char tty_name[] = "/dev/tty??"; |
164 | |
176 | |
165 | # ifndef PTYCHAR1 |
177 | # ifndef PTYCHAR1 |
166 | # define PTYCHAR1 "pqrstuvwxyz" |
178 | # define PTYCHAR1 "pqrstuvwxyz" |
167 | # endif |
179 | # endif |
168 | # ifndef PTYCHAR2 |
180 | # ifndef PTYCHAR2 |
169 | # define PTYCHAR2 "0123456789abcdef" |
181 | # define PTYCHAR2 "0123456789abcdef" |
170 | # endif |
182 | # endif |
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183 | |
171 | for (c1 = PTYCHAR1; *c1; c1++) { |
184 | for (c1 = PTYCHAR1; *c1; c1++) |
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185 | { |
172 | pty_name[(sizeof(pty_name) - 3)] = |
186 | pty_name[ (sizeof (pty_name) - 3)] = |
173 | tty_name[(sizeof(pty_name) - 3)] = *c1; |
187 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
174 | for (c2 = PTYCHAR2; *c2; c2++) { |
188 | for (c2 = PTYCHAR2; *c2; c2++) |
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189 | { |
175 | pty_name[(sizeof(pty_name) - 2)] = |
190 | pty_name[ (sizeof (pty_name) - 2)] = |
176 | tty_name[(sizeof(pty_name) - 2)] = *c2; |
191 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
177 | if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { |
192 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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193 | { |
178 | if (access(tty_name, R_OK | W_OK) == 0) { |
194 | if (access (tty_name, R_OK | W_OK) == 0) |
179 | *ttydev = strdup(tty_name); |
195 | { |
180 | return pfd; |
196 | *ttydev = strdup (tty_name); |
181 | } |
197 | return pfd; |
182 | close(pfd); |
198 | } |
183 | } |
199 | |
184 | } |
200 | close (pfd); |
185 | } |
201 | } |
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202 | } |
186 | } |
203 | } |
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204 | } |
187 | #endif |
205 | #endif |
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206 | |
188 | return -1; |
207 | return -1; |
189 | } |
208 | } |
190 | |
209 | |
191 | /*----------------------------------------------------------------------*/ |
210 | /*----------------------------------------------------------------------*/ |
192 | /* |
211 | /* |
193 | * Returns tty file descriptor, or -1 on failure |
212 | * Returns tty file descriptor, or -1 on failure |
194 | */ |
213 | */ |
195 | /* EXTPROTO */ |
214 | static int |
196 | int |
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197 | rxvt_get_tty(const char *ttydev) |
215 | get_tty (char *ttydev) |
198 | { |
216 | { |
199 | return open(ttydev, O_RDWR | O_NOCTTY, 0); |
217 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
200 | } |
218 | } |
201 | |
219 | |
202 | /*----------------------------------------------------------------------*/ |
220 | /*----------------------------------------------------------------------*/ |
203 | /* |
221 | /* |
204 | * 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 |
205 | */ |
223 | */ |
206 | /* EXTPROTO */ |
224 | static int |
207 | int |
225 | control_tty (int fd_tty) |
208 | rxvt_control_tty(int fd_tty, const char *ttydev) |
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209 | { |
226 | { |
210 | #ifndef __QNX__ |
227 | int fd; |
211 | int fd; |
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212 | |
228 | |
213 | D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); |
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214 | /* ---------------------------------------- */ |
229 | /* ---------------------------------------- */ |
215 | # ifdef HAVE_SETSID |
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216 | setsid(); |
230 | setsid (); |
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231 | |
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232 | /* ---------------------------------------- */ |
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233 | # if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
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234 | /* |
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235 | * Push STREAMS modules: |
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236 | * ptem: pseudo-terminal hardware emulation module. |
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237 | * ldterm: standard terminal line discipline. |
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238 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
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239 | * |
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240 | * After we push the STREAMS modules, the first open () on the slave side |
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241 | * (i.e. the next section between the dashes giving us "tty opened OK") |
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242 | * should make the "ptem" (or "ldterm" depending upon either which OS |
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243 | * version or which set of manual pages you have) module give us a |
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244 | * controlling terminal. We must already have close ()d the master side |
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245 | * fd in this child process before we push STREAMS modules on because the |
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246 | * documentation is really unclear about whether it is any close () on |
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247 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
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248 | * close () - on the master side which causes a hang up to be sent |
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249 | * through - Geoff Wing |
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250 | */ |
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251 | # ifdef HAVE_ISASTREAM |
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252 | if (isastream (fd_tty) == 1) |
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253 | # endif |
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254 | { |
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255 | ioctl (fd_tty, I_PUSH, "ptem"); |
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256 | ioctl (fd_tty, I_PUSH, "ldterm"); |
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257 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
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258 | } |
217 | # endif |
259 | # endif |
218 | # if defined(HAVE_SETPGID) |
260 | /* ---------------------------------------- */ |
219 | setpgid(0, 0); |
261 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
220 | # elif defined(HAVE_SETPGRP) |
262 | /* ---------------------------------------- */ |
221 | setpgrp(0, 0); |
263 | fd = open ("/dev/tty", O_WRONLY); |
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264 | if (fd < 0) |
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265 | return -1; /* fatal */ |
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266 | close (fd); |
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267 | /* ---------------------------------------- */ |
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268 | |
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269 | return 0; |
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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 | ; |
|
|
357 | else |
222 | # endif |
358 | # endif |
223 | /* ---------------------------------------- */ |
359 | { |
224 | # ifdef TIOCNOTTY |
360 | saved = true; |
225 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
361 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
226 | D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
362 | chmod (name, ttyconf.mode); |
227 | if (fd >= 0) { |
363 | # ifdef HAVE_REVOKE |
228 | ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */ |
364 | revoke (name); |
229 | close(fd); |
|
|
230 | } |
|
|
231 | # endif |
365 | # endif |
232 | /* ---------------------------------------- */ |
366 | } |
233 | fd = open("/dev/tty", O_RDWR | O_NOCTTY); |
367 | } |
234 | D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
368 | else |
235 | if (fd >= 0) |
369 | { /* action == RESTORE */ |
236 | close(fd); /* ouch: still have controlling tty */ |
370 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
237 | /* ---------------------------------------- */ |
371 | if (saved) |
238 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
372 | { |
239 | /* |
373 | chmod (name, savestat.st_mode); |
240 | * Push STREAMS modules: |
374 | chown (name, savestat.st_uid, savestat.st_gid); |
241 | * ptem: pseudo-terminal hardware emulation module. |
375 | } |
242 | * ldterm: standard terminal line discipline. |
376 | # else |
243 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
377 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
244 | * |
378 | chown (name, 0, 0); |
245 | * 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") |
|
|
247 | * 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 |
|
|
249 | * 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 |
|
|
251 | * 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 |
|
|
253 | * close() - on the master side which causes a hang up to be sent |
|
|
254 | * through - Geoff Wing |
|
|
255 | */ |
|
|
256 | # ifdef HAVE_ISASTREAM |
|
|
257 | if (isastream(fd_tty) == 1) |
|
|
258 | # endif |
379 | # endif |
|
|
380 | |
259 | { |
381 | } |
260 | D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); |
382 | |
261 | ioctl(fd_tty, I_PUSH, "ptem"); |
383 | rxvt_privileges (IGNORE); |
262 | ioctl(fd_tty, I_PUSH, "ldterm"); |
384 | } |
263 | ioctl(fd_tty, I_PUSH, "ttcompat"); |
|
|
264 | } |
|
|
265 | #endif |
|
|
266 | /* ---------------------------------------- */ |
|
|
267 | # if defined(TIOCSCTTY) |
|
|
268 | fd = ioctl(fd_tty, TIOCSCTTY, NULL); |
|
|
269 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); |
|
|
270 | # elif defined(TIOCSETCTTY) |
|
|
271 | fd = ioctl(fd_tty, TIOCSETCTTY, NULL); |
|
|
272 | D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); |
|
|
273 | # else |
|
|
274 | fd = open(ttydev, O_RDWR); |
|
|
275 | D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); |
|
|
276 | if (fd >= 0) |
|
|
277 | close(fd); |
|
|
278 | # endif |
385 | #endif |
279 | /* ---------------------------------------- */ |
386 | |
280 | fd = open("/dev/tty", O_WRONLY); |
387 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
281 | D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
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 | |
|
|
446 | #if PTYTTY_HELPER |
|
|
447 | |
|
|
448 | static int sock_fd; |
|
|
449 | static int pid; |
|
|
450 | |
|
|
451 | struct command |
|
|
452 | { |
|
|
453 | enum { get, login, destroy } type; |
|
|
454 | |
|
|
455 | rxvt_ptytty *id; |
|
|
456 | |
|
|
457 | bool login_shell; |
|
|
458 | int cmd_pid; |
|
|
459 | char hostname[512]; // arbitrary, but should be plenty |
|
|
460 | }; |
|
|
461 | |
|
|
462 | struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty |
|
|
463 | { |
|
|
464 | rxvt_ptytty *id; |
|
|
465 | |
|
|
466 | rxvt_ptytty_proxy (); |
|
|
467 | ~rxvt_ptytty_proxy (); |
|
|
468 | |
|
|
469 | bool get (); |
|
|
470 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
471 | }; |
|
|
472 | |
|
|
473 | bool |
|
|
474 | rxvt_ptytty_proxy::get () |
|
|
475 | { |
|
|
476 | command cmd; |
|
|
477 | |
|
|
478 | cmd.type = command::get; |
|
|
479 | |
|
|
480 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
481 | |
|
|
482 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
483 | rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
484 | |
|
|
485 | if (!id) |
|
|
486 | return false; |
|
|
487 | |
|
|
488 | if ((pty = rxvt_recv_fd (sock_fd)) < 0 |
|
|
489 | || (tty = rxvt_recv_fd (sock_fd)) < 0) |
|
|
490 | rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
491 | |
|
|
492 | return true; |
|
|
493 | } |
|
|
494 | |
|
|
495 | void |
|
|
496 | rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
|
|
497 | { |
|
|
498 | command cmd; |
|
|
499 | |
|
|
500 | cmd.type = command::login; |
|
|
501 | cmd.id = id; |
|
|
502 | cmd.cmd_pid = cmd_pid; |
|
|
503 | cmd.login_shell = login_shell; |
|
|
504 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
|
|
505 | |
|
|
506 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
507 | } |
|
|
508 | |
|
|
509 | rxvt_ptytty_proxy::~rxvt_ptytty_proxy () |
|
|
510 | { |
|
|
511 | command cmd; |
|
|
512 | |
|
|
513 | cmd.type = command::destroy; |
|
|
514 | cmd.id = id; |
|
|
515 | |
|
|
516 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
517 | } |
|
|
518 | |
|
|
519 | static |
|
|
520 | void serve () |
|
|
521 | { |
|
|
522 | command cmd; |
|
|
523 | vector<rxvt_ptytty *> ptys; |
|
|
524 | |
|
|
525 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
526 | { |
|
|
527 | if (cmd.type == command::get) |
|
|
528 | { |
|
|
529 | // -> id ptyfd ttyfd |
|
|
530 | cmd.id = new rxvt_ptytty_unix; |
|
|
531 | |
|
|
532 | if (cmd.id->get ()) |
|
|
533 | { |
|
|
534 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
535 | ptys.push_back (cmd.id); |
|
|
536 | |
|
|
537 | rxvt_send_fd (sock_fd, cmd.id->pty); |
|
|
538 | rxvt_send_fd (sock_fd, cmd.id->tty); |
|
|
539 | } |
|
|
540 | else |
|
|
541 | { |
|
|
542 | delete cmd.id; |
|
|
543 | cmd.id = 0; |
|
|
544 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
545 | } |
|
|
546 | } |
|
|
547 | else if (cmd.type == command::login) |
|
|
548 | { |
|
|
549 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
550 | { |
|
|
551 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
552 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
553 | } |
|
|
554 | else printf ("xxx hiya login no match %p\n", cmd.id); |
|
|
555 | } |
|
|
556 | else if (cmd.type == command::destroy) |
|
|
557 | { |
|
|
558 | rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
559 | |
|
|
560 | if (*pty) |
|
|
561 | { |
|
|
562 | ptys.erase (pty); |
|
|
563 | delete *pty; |
|
|
564 | } |
|
|
565 | else printf ("xxx hiya destroy no match %p\n", cmd.id); |
|
|
566 | } |
|
|
567 | else |
|
|
568 | break; |
|
|
569 | } |
|
|
570 | |
|
|
571 | // destroy all ptys |
|
|
572 | for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
|
|
573 | delete *i; |
|
|
574 | } |
|
|
575 | |
|
|
576 | void rxvt_ptytty_server () |
|
|
577 | { |
|
|
578 | int sv[2]; |
|
|
579 | |
|
|
580 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
581 | rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
582 | |
|
|
583 | pid = fork (); |
|
|
584 | |
282 | if (fd < 0) |
585 | if (pid < 0) |
283 | return -1; /* fatal */ |
586 | rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
587 | |
|
|
588 | if (pid) |
|
|
589 | { |
|
|
590 | // client, urxvt |
|
|
591 | sock_fd = sv[0]; |
|
|
592 | close (sv[1]); |
|
|
593 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
594 | } |
|
|
595 | else |
|
|
596 | { |
|
|
597 | // server, pty-helper |
|
|
598 | sock_fd = sv[1]; |
|
|
599 | |
|
|
600 | close (sv[0]);//D |
|
|
601 | // for (int fd = 0; fd < 1023; fd++) |
|
|
602 | // if (fd != sock_fd) |
284 | close(fd); |
603 | // close (fd); |
285 | /* ---------------------------------------- */ |
604 | |
286 | D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); |
605 | serve (); |
287 | /* ---------------------------------------- */ |
606 | _exit (EXIT_SUCCESS); |
288 | #endif /* ! __QNX__ */ |
607 | } |
289 | return 0; |
|
|
290 | } |
608 | } |
|
|
609 | #endif |
|
|
610 | |
|
|
611 | // a "factory" *g* |
|
|
612 | rxvt_ptytty * |
|
|
613 | rxvt_new_ptytty () |
|
|
614 | { |
|
|
615 | #if PTYTTY_HELPER |
|
|
616 | if (pid > 0) |
|
|
617 | { |
|
|
618 | // use helper process |
|
|
619 | return new rxvt_ptytty_proxy; |
|
|
620 | } |
|
|
621 | else |
|
|
622 | #endif |
|
|
623 | return new rxvt_ptytty_unix; |
|
|
624 | } |
|
|
625 | |
291 | /*----------------------- end-of-file (C source) -----------------------*/ |
626 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
627 | |