… | |
… | |
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> |
7 | * Copyright (c) 2004 Marc Lehmann <pcg@goof.com> |
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 | #if 0 |
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31 | #ifdef HAVE_GETPT |
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32 | # define _GNU_SOURCE |
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33 | #endif |
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34 | #endif |
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35 | |
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36 | #include <cstdio> |
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37 | #ifdef HAVE_STDLIB_H |
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38 | # include <cstdlib> |
27 | #include <cstdlib> |
39 | #endif |
28 | #include <cstring> |
40 | #ifdef HAVE_SYS_TYPES_H |
29 | |
41 | # include <sys/types.h> |
30 | #include <sys/types.h> |
42 | #endif |
31 | #include <sys/socket.h> |
43 | #ifdef HAVE_UNISTD_H |
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44 | # include <unistd.h> |
32 | #include <unistd.h> |
45 | #endif |
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46 | #if defined(HAVE_STRING_H) |
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47 | # include <cstring> |
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48 | #endif |
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49 | #ifdef HAVE_FCNTL_H |
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50 | # include <fcntl.h> |
33 | #include <fcntl.h> |
51 | #endif |
34 | |
52 | #ifdef HAVE_SYS_IOCTL_H |
35 | #ifdef HAVE_SYS_IOCTL_H |
53 | # include <sys/ioctl.h> |
36 | # include <sys/ioctl.h> |
54 | #endif |
37 | #endif |
55 | #if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) |
38 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
56 | # include <sys/stropts.h> /* for I_PUSH */ |
39 | # include <sys/stropts.h> /* for I_PUSH */ |
57 | #endif |
40 | #endif |
58 | #ifdef HAVE_ISASTREAM |
41 | #ifdef HAVE_ISASTREAM |
59 | # include <stropts.h> |
42 | # include <stropts.h> |
60 | #endif |
43 | #endif |
61 | |
44 | #if defined(HAVE_PTY_H) |
62 | #ifdef DEBUG_TTY |
45 | # include <pty.h> |
63 | # define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) |
46 | #elif defined(HAVE_LIBUTIL_H) |
64 | #else |
47 | # include <libutil.h> |
65 | # define D_TTY(x) |
48 | #elif defined(HAVE_UTIL_H) |
|
|
49 | # include <util.h> |
66 | #endif |
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 | ///////////////////////////////////////////////////////////////////////////// |
67 | |
60 | |
68 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
69 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
70 | * ------------------------------------------------------------------------- */ |
63 | * ------------------------------------------------------------------------- */ |
71 | /* |
64 | /* |
72 | * Returns pty file descriptor, or -1 on failure |
65 | * Returns pty file descriptor, or -1 on failure |
73 | * 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. |
74 | * 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 |
75 | */ |
68 | */ |
76 | /* EXTPROTO */ |
69 | static inline int |
77 | int |
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78 | rxvt_get_pty (int *fd_tty, const char **ttydev) |
70 | get_pty_streams (int *fd_tty, char **ttydev) |
79 | { |
71 | { |
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72 | #ifdef NO_SETOWNER_TTYDEV |
80 | int pfd; |
73 | int pfd; |
81 | |
74 | |
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75 | # if defined(PTYS_ARE_GETPT) |
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76 | pfd = getpt(); |
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77 | # elif defined(PTYS_ARE_POSIX) |
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78 | pfd = posix_openpt (O_RDWR); |
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79 | # else |
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80 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
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81 | # endif |
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82 | if (pfd >= 0) |
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83 | { |
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84 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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85 | && unlockpt (pfd) == 0) |
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86 | { /* slave now unlocked */ |
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87 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
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88 | return pfd; |
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89 | } |
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90 | |
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91 | close (pfd); |
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92 | } |
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93 | #endif |
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94 | |
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95 | return -1; |
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96 | } |
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97 | |
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98 | static inline int |
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99 | get_pty_openpty (int *fd_tty, char **ttydev) |
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100 | { |
82 | #ifdef PTYS_ARE_OPENPTY |
101 | #ifdef PTYS_ARE_OPENPTY |
83 | |
102 | int pfd; |
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103 | int res; |
84 | char tty_name[sizeof "/dev/pts/????\0"]; |
104 | char tty_name[sizeof "/dev/pts/????\0"]; |
85 | |
105 | |
86 | if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) |
106 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
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107 | if (res != -1) |
87 | { |
108 | { |
88 | *ttydev = strdup (tty_name); |
109 | *ttydev = strdup (tty_name); |
89 | return pfd; |
110 | return pfd; |
90 | } |
111 | } |
91 | #endif |
112 | #endif |
92 | |
113 | |
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114 | return -1; |
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115 | } |
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116 | |
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117 | static inline int |
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118 | get_pty__getpty (int *fd_tty, char **ttydev) |
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119 | { |
93 | #ifdef PTYS_ARE__GETPTY |
120 | #ifdef PTYS_ARE__GETPTY |
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121 | int pfd; |
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122 | |
94 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
123 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
95 | if (*ttydev != NULL) |
124 | if (*ttydev != NULL) |
96 | return pfd; |
125 | return pfd; |
97 | #endif |
126 | #endif |
98 | |
127 | |
99 | #ifdef PTYS_ARE_GETPTY |
128 | return -1; |
|
|
129 | } |
100 | |
130 | |
101 | char *ptydev; |
131 | static inline int |
102 | |
132 | get_pty_ptc (int *fd_tty, char **ttydev) |
103 | while ((ptydev = getpty ()) != NULL) |
133 | { |
104 | if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) |
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105 | { |
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106 | *ttydev = ptydev; |
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107 | return pfd; |
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108 | } |
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109 | #endif |
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110 | |
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111 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
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112 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) |
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113 | |
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114 | { |
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115 | # ifdef PTYS_ARE_GETPT |
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116 | pfd = getpt (); |
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117 | # else |
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118 | |
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119 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
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120 | # endif |
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121 | |
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122 | if (pfd >= 0) |
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123 | { |
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124 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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125 | && unlockpt (pfd) == 0) |
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126 | { /* slave now unlocked */ |
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127 | *ttydev = ptsname (pfd); /* get slave's name */ |
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128 | return pfd; |
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129 | } |
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130 | close (pfd); |
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131 | } |
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132 | } |
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133 | # endif |
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134 | #endif |
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135 | |
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136 | #ifdef PTYS_ARE_PTC |
134 | #ifdef PTYS_ARE_PTC |
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135 | int pfd; |
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136 | |
137 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
137 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
138 | { |
138 | { |
139 | *ttydev = ttyname (pfd); |
139 | *ttydev = strdup (ttyname (pfd)); |
140 | return pfd; |
140 | return pfd; |
141 | } |
141 | } |
142 | #endif |
142 | #endif |
143 | |
143 | |
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144 | return -1; |
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145 | } |
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146 | |
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147 | static inline int |
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148 | get_pty_clone (int *fd_tty, char **ttydev) |
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149 | { |
144 | #ifdef PTYS_ARE_CLONE |
150 | #ifdef PTYS_ARE_CLONE |
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151 | int pfd; |
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152 | |
145 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
153 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
146 | { |
154 | { |
147 | *ttydev = ptsname (pfd); |
155 | *ttydev = strdup (ptsname (pfd)); |
148 | return pfd; |
156 | return pfd; |
149 | } |
157 | } |
150 | #endif |
158 | #endif |
151 | |
159 | |
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160 | return -1; |
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161 | } |
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162 | |
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163 | static inline int |
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164 | get_pty_numeric (int *fd_tty, char **ttydev) |
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165 | { |
152 | #ifdef PTYS_ARE_NUMERIC |
166 | #ifdef PTYS_ARE_NUMERIC |
153 | { |
167 | int pfd; |
154 | int idx; |
168 | int idx; |
155 | char *c1, *c2; |
169 | char *c1, *c2; |
156 | char pty_name[] = "/dev/ptyp???"; |
170 | char pty_name[] = "/dev/ptyp???"; |
157 | char tty_name[] = "/dev/ttyp???"; |
171 | char tty_name[] = "/dev/ttyp???"; |
158 | |
172 | |
159 | c1 = & (pty_name[sizeof (pty_name) - 4]); |
173 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
160 | c2 = & (tty_name[sizeof (tty_name) - 4]); |
174 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
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175 | |
161 | for (idx = 0; idx < 256; idx++) |
176 | for (idx = 0; idx < 256; idx++) |
162 | { |
177 | { |
163 | sprintf (c1, "%d", idx); |
178 | sprintf (c1, "%d", idx); |
164 | sprintf (c2, "%d", idx); |
179 | sprintf (c2, "%d", idx); |
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180 | |
165 | if (access (tty_name, F_OK) < 0) |
181 | if (access (tty_name, F_OK) < 0) |
166 | { |
182 | { |
167 | idx = 256; |
183 | idx = 256; |
168 | break; |
184 | break; |
169 | } |
185 | } |
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186 | |
170 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
187 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
171 | { |
188 | { |
172 | if (access (tty_name, R_OK | W_OK) == 0) |
189 | if (access (tty_name, R_OK | W_OK) == 0) |
173 | { |
190 | { |
174 | *ttydev = strdup (tty_name); |
191 | *ttydev = strdup (tty_name); |
175 | return pfd; |
192 | return pfd; |
176 | } |
193 | } |
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194 | |
177 | close (pfd); |
195 | close (pfd); |
178 | } |
196 | } |
179 | } |
197 | } |
180 | } |
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181 | #endif |
198 | #endif |
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199 | |
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200 | return -1; |
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201 | } |
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202 | |
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203 | static inline int |
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204 | get_pty_searched (int *fd_tty, char **ttydev) |
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205 | { |
182 | #ifdef PTYS_ARE_SEARCHED |
206 | #ifdef PTYS_ARE_SEARCHED |
183 | { |
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184 | const char *c1, *c2; |
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185 | char pty_name[] = "/dev/pty??"; |
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186 | char tty_name[] = "/dev/tty??"; |
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187 | |
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188 | # ifndef PTYCHAR1 |
207 | # ifndef PTYCHAR1 |
189 | # define PTYCHAR1 "pqrstuvwxyz" |
208 | # define PTYCHAR1 "pqrstuvwxyz" |
190 | # endif |
209 | # endif |
191 | # ifndef PTYCHAR2 |
210 | # ifndef PTYCHAR2 |
192 | # define PTYCHAR2 "0123456789abcdef" |
211 | # define PTYCHAR2 "0123456789abcdef" |
193 | # endif |
212 | # endif |
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213 | int pfd; |
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214 | const char *c1, *c2; |
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215 | char pty_name[] = "/dev/pty??"; |
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216 | char tty_name[] = "/dev/tty??"; |
194 | |
217 | |
195 | for (c1 = PTYCHAR1; *c1; c1++) |
218 | for (c1 = PTYCHAR1; *c1; c1++) |
196 | { |
219 | { |
197 | pty_name[ (sizeof (pty_name) - 3)] = |
220 | pty_name[ (sizeof (pty_name) - 3)] = |
198 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
221 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
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222 | |
199 | for (c2 = PTYCHAR2; *c2; c2++) |
223 | for (c2 = PTYCHAR2; *c2; c2++) |
200 | { |
224 | { |
201 | pty_name[ (sizeof (pty_name) - 2)] = |
225 | pty_name[ (sizeof (pty_name) - 2)] = |
202 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
226 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
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227 | |
203 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
228 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
204 | { |
229 | { |
205 | if (access (tty_name, R_OK | W_OK) == 0) |
230 | if (access (tty_name, R_OK | W_OK) == 0) |
206 | { |
231 | { |
207 | *ttydev = strdup (tty_name); |
232 | *ttydev = strdup (tty_name); |
208 | return pfd; |
233 | return pfd; |
209 | } |
234 | } |
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235 | |
210 | close (pfd); |
236 | close (pfd); |
211 | } |
237 | } |
212 | } |
238 | } |
213 | } |
239 | } |
214 | } |
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215 | #endif |
240 | #endif |
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241 | |
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242 | return -1; |
|
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243 | } |
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244 | |
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245 | static int |
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246 | get_pty (int *fd_tty, char **ttydev) |
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247 | { |
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248 | int pfd; |
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249 | |
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250 | if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1 |
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251 | || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1 |
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252 | || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1 |
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253 | || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1 |
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254 | || (pfd = get_pty_clone (fd_tty, ttydev)) != -1 |
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255 | || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1 |
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256 | || (pfd = get_pty_searched (fd_tty, ttydev)) != -1) |
|
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257 | return pfd; |
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258 | |
216 | return -1; |
259 | return -1; |
217 | } |
260 | } |
218 | |
261 | |
219 | /*----------------------------------------------------------------------*/ |
262 | /*----------------------------------------------------------------------*/ |
220 | /* |
263 | /* |
221 | * Returns tty file descriptor, or -1 on failure |
264 | * Returns tty file descriptor, or -1 on failure |
222 | */ |
265 | */ |
223 | /* EXTPROTO */ |
266 | static int |
224 | int |
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225 | rxvt_get_tty (const char *ttydev) |
267 | get_tty (char *ttydev) |
226 | { |
268 | { |
227 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
269 | return open (ttydev, O_RDWR | O_NOCTTY, 0); |
228 | } |
270 | } |
229 | |
271 | |
230 | /*----------------------------------------------------------------------*/ |
272 | /*----------------------------------------------------------------------*/ |
231 | /* |
273 | /* |
232 | * Make our tty a controlling tty so that /dev/tty points to us |
274 | * Make our tty a controlling tty so that /dev/tty points to us |
233 | */ |
275 | */ |
234 | /* EXTPROTO */ |
276 | static int |
235 | int |
277 | control_tty (int fd_tty) |
236 | rxvt_control_tty (int fd_tty, const char *ttydev) |
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237 | { |
278 | { |
238 | #ifndef __QNX__ |
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239 | int fd; |
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240 | |
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241 | D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev)); |
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242 | /* ---------------------------------------- */ |
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243 | # ifdef HAVE_SETSID |
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244 | setsid (); |
279 | setsid (); |
245 | # endif |
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246 | # if defined(HAVE_SETPGID) |
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247 | setpgid (0, 0); |
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248 | # elif defined(HAVE_SETPGRP) |
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249 | setpgrp (0, 0); |
|
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250 | # endif |
|
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251 | /* ---------------------------------------- */ |
|
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252 | # ifdef TIOCNOTTY |
|
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253 | |
280 | |
254 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
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255 | D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); |
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256 | if (fd >= 0) |
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257 | { |
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258 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
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259 | close (fd); |
|
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260 | } |
|
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261 | # endif |
|
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262 | /* ---------------------------------------- */ |
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263 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
|
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264 | D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); |
|
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265 | if (fd >= 0) |
|
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266 | close (fd); /* ouch: still have controlling tty */ |
|
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267 | /* ---------------------------------------- */ |
|
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268 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
281 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
269 | /* |
282 | /* |
270 | * Push STREAMS modules: |
283 | * Push STREAMS modules: |
271 | * ptem: pseudo-terminal hardware emulation module. |
284 | * ptem: pseudo-terminal hardware emulation module. |
272 | * ldterm: standard terminal line discipline. |
285 | * ldterm: standard terminal line discipline. |
… | |
… | |
285 | */ |
298 | */ |
286 | # ifdef HAVE_ISASTREAM |
299 | # ifdef HAVE_ISASTREAM |
287 | if (isastream (fd_tty) == 1) |
300 | if (isastream (fd_tty) == 1) |
288 | # endif |
301 | # endif |
289 | { |
302 | { |
290 | D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules")); |
|
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291 | ioctl (fd_tty, I_PUSH, "ptem"); |
303 | ioctl (fd_tty, I_PUSH, "ptem"); |
292 | ioctl (fd_tty, I_PUSH, "ldterm"); |
304 | ioctl (fd_tty, I_PUSH, "ldterm"); |
293 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
305 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
294 | } |
306 | } |
295 | #endif |
307 | #endif |
296 | /* ---------------------------------------- */ |
308 | |
297 | # if defined(TIOCSCTTY) |
|
|
298 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
309 | ioctl (fd_tty, TIOCSCTTY, NULL); |
299 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd)); |
310 | |
300 | # elif defined(TIOCSETCTTY) |
|
|
301 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
|
|
302 | D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd)); |
|
|
303 | # else |
|
|
304 | fd = open (ttydev, O_RDWR); |
|
|
305 | D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK")); |
|
|
306 | if (fd >= 0) |
|
|
307 | close (fd); |
|
|
308 | # endif |
|
|
309 | /* ---------------------------------------- */ |
|
|
310 | fd = open ("/dev/tty", O_WRONLY); |
311 | int fd = open ("/dev/tty", O_WRONLY); |
311 | D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); |
|
|
312 | if (fd < 0) |
312 | if (fd < 0) |
313 | return -1; /* fatal */ |
313 | return -1; /* fatal */ |
|
|
314 | |
314 | close (fd); |
315 | close (fd); |
315 | /* ---------------------------------------- */ |
|
|
316 | D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ())); |
|
|
317 | /* ---------------------------------------- */ |
|
|
318 | #endif /* ! __QNX__ */ |
|
|
319 | |
316 | |
320 | return 0; |
317 | return 0; |
321 | } |
318 | } |
|
|
319 | |
|
|
320 | void |
|
|
321 | rxvt_ptytty::close_tty () |
|
|
322 | { |
|
|
323 | if (tty < 0) |
|
|
324 | return; |
|
|
325 | |
|
|
326 | close (tty); |
|
|
327 | tty = -1; |
|
|
328 | } |
|
|
329 | |
|
|
330 | bool |
|
|
331 | rxvt_ptytty::make_controlling_tty () |
|
|
332 | { |
|
|
333 | return control_tty (tty) >= 0; |
|
|
334 | } |
|
|
335 | |
|
|
336 | void |
|
|
337 | rxvt_ptytty::set_utf8_mode (bool on) |
|
|
338 | { |
|
|
339 | #ifdef IUTF8 |
|
|
340 | if (pty < 0) |
|
|
341 | return; |
|
|
342 | |
|
|
343 | struct termios tio; |
|
|
344 | |
|
|
345 | if (tcgetattr (pty, &tio) != -1) |
|
|
346 | { |
|
|
347 | tcflag_t new_cflag = tio.c_iflag; |
|
|
348 | |
|
|
349 | if (on) |
|
|
350 | new_cflag |= IUTF8; |
|
|
351 | else |
|
|
352 | new_cflag &= ~IUTF8; |
|
|
353 | |
|
|
354 | if (new_cflag != tio.c_iflag) |
|
|
355 | { |
|
|
356 | tio.c_iflag = new_cflag; |
|
|
357 | tcsetattr (pty, TCSANOW, &tio); |
|
|
358 | } |
|
|
359 | } |
|
|
360 | #endif |
|
|
361 | } |
|
|
362 | |
|
|
363 | ///////////////////////////////////////////////////////////////////////////// |
|
|
364 | |
|
|
365 | #ifndef NO_SETOWNER_TTYDEV |
|
|
366 | static struct ttyconf { |
|
|
367 | gid_t gid; |
|
|
368 | mode_t mode; |
|
|
369 | |
|
|
370 | ttyconf () |
|
|
371 | { |
|
|
372 | #ifdef TTY_GID_SUPPORT |
|
|
373 | struct group *gr = getgrnam ("tty"); |
|
|
374 | |
|
|
375 | if (gr) |
|
|
376 | { /* change group ownership of tty to "tty" */ |
|
|
377 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
|
|
378 | gid = gr->gr_gid; |
|
|
379 | } |
|
|
380 | else |
|
|
381 | #endif /* TTY_GID_SUPPORT */ |
|
|
382 | { |
|
|
383 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
|
|
384 | gid = 0; |
|
|
385 | } |
|
|
386 | } |
|
|
387 | } ttyconf; |
|
|
388 | |
|
|
389 | ///////////////////////////////////////////////////////////////////////////// |
|
|
390 | |
|
|
391 | void |
|
|
392 | rxvt_ptytty_unix::privileges (rxvt_privaction action) |
|
|
393 | { |
|
|
394 | if (!name || !*name) |
|
|
395 | return; |
|
|
396 | |
|
|
397 | if (action == SAVE) |
|
|
398 | { |
|
|
399 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
|
|
400 | chmod (name, ttyconf.mode); |
|
|
401 | # ifdef HAVE_REVOKE |
|
|
402 | revoke (name); |
|
|
403 | # endif |
|
|
404 | } |
|
|
405 | else |
|
|
406 | { /* action == RESTORE */ |
|
|
407 | chmod (name, RESTORE_TTY_MODE); |
|
|
408 | chown (name, 0, ttyconf.gid); |
|
|
409 | } |
|
|
410 | } |
|
|
411 | #endif |
|
|
412 | |
|
|
413 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
|
|
414 | { |
|
|
415 | pty = tty = -1; |
|
|
416 | name = 0; |
|
|
417 | #if UTMP_SUPPORT |
|
|
418 | cmd_pid = 0; |
|
|
419 | #endif |
|
|
420 | } |
|
|
421 | |
|
|
422 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
|
|
423 | { |
|
|
424 | #if UTMP_SUPPORT |
|
|
425 | logout (); |
|
|
426 | #endif |
|
|
427 | put (); |
|
|
428 | } |
|
|
429 | |
|
|
430 | void |
|
|
431 | rxvt_ptytty_unix::put () |
|
|
432 | { |
|
|
433 | #ifndef NO_SETOWNER_TTYDEV |
|
|
434 | privileges (RESTORE); |
|
|
435 | #endif |
|
|
436 | |
|
|
437 | if (pty >= 0) close (pty); |
|
|
438 | close_tty (); |
|
|
439 | free (name); |
|
|
440 | |
|
|
441 | pty = tty = -1; |
|
|
442 | name = 0; |
|
|
443 | } |
|
|
444 | |
|
|
445 | bool |
|
|
446 | rxvt_ptytty_unix::get () |
|
|
447 | { |
|
|
448 | /* get master (pty) */ |
|
|
449 | if ((pty = get_pty (&tty, &name)) < 0) |
|
|
450 | return false; |
|
|
451 | |
|
|
452 | fcntl (pty, F_SETFL, O_NONBLOCK); |
|
|
453 | |
|
|
454 | /* get slave (tty) */ |
|
|
455 | if (tty < 0) |
|
|
456 | { |
|
|
457 | #ifndef NO_SETOWNER_TTYDEV |
|
|
458 | privileges (SAVE); |
|
|
459 | #endif |
|
|
460 | |
|
|
461 | if ((tty = get_tty (name)) < 0) |
|
|
462 | { |
|
|
463 | put (); |
|
|
464 | return false; |
|
|
465 | } |
|
|
466 | } |
|
|
467 | |
|
|
468 | return true; |
|
|
469 | } |
|
|
470 | |
|
|
471 | #if PTYTTY_HELPER |
|
|
472 | |
|
|
473 | static int sock_fd; |
|
|
474 | static int pid; |
|
|
475 | |
|
|
476 | struct command |
|
|
477 | { |
|
|
478 | enum { get, login, destroy } type; |
|
|
479 | |
|
|
480 | rxvt_ptytty *id; |
|
|
481 | |
|
|
482 | bool login_shell; |
|
|
483 | int cmd_pid; |
|
|
484 | char hostname[512]; // arbitrary, but should be plenty |
|
|
485 | }; |
|
|
486 | |
|
|
487 | struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty |
|
|
488 | { |
|
|
489 | rxvt_ptytty *id; |
|
|
490 | |
|
|
491 | ~rxvt_ptytty_proxy (); |
|
|
492 | |
|
|
493 | bool get (); |
|
|
494 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
495 | }; |
|
|
496 | |
|
|
497 | bool |
|
|
498 | rxvt_ptytty_proxy::get () |
|
|
499 | { |
|
|
500 | command cmd; |
|
|
501 | |
|
|
502 | cmd.type = command::get; |
|
|
503 | |
|
|
504 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
505 | |
|
|
506 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
507 | rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
508 | |
|
|
509 | if (!id) |
|
|
510 | return false; |
|
|
511 | |
|
|
512 | if ((pty = rxvt_recv_fd (sock_fd)) < 0 |
|
|
513 | || (tty = rxvt_recv_fd (sock_fd)) < 0) |
|
|
514 | rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
515 | |
|
|
516 | return true; |
|
|
517 | } |
|
|
518 | |
|
|
519 | void |
|
|
520 | rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
|
|
521 | { |
|
|
522 | command cmd; |
|
|
523 | |
|
|
524 | cmd.type = command::login; |
|
|
525 | cmd.id = id; |
|
|
526 | cmd.cmd_pid = cmd_pid; |
|
|
527 | cmd.login_shell = login_shell; |
|
|
528 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
|
|
529 | |
|
|
530 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
531 | } |
|
|
532 | |
|
|
533 | rxvt_ptytty_proxy::~rxvt_ptytty_proxy () |
|
|
534 | { |
|
|
535 | command cmd; |
|
|
536 | |
|
|
537 | cmd.type = command::destroy; |
|
|
538 | cmd.id = id; |
|
|
539 | |
|
|
540 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
541 | } |
|
|
542 | |
|
|
543 | static |
|
|
544 | void serve () |
|
|
545 | { |
|
|
546 | command cmd; |
|
|
547 | vector<rxvt_ptytty *> ptys; |
|
|
548 | |
|
|
549 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
550 | { |
|
|
551 | if (cmd.type == command::get) |
|
|
552 | { |
|
|
553 | // -> id ptyfd ttyfd |
|
|
554 | cmd.id = new rxvt_ptytty_unix; |
|
|
555 | |
|
|
556 | if (cmd.id->get ()) |
|
|
557 | { |
|
|
558 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
559 | ptys.push_back (cmd.id); |
|
|
560 | |
|
|
561 | rxvt_send_fd (sock_fd, cmd.id->pty); |
|
|
562 | rxvt_send_fd (sock_fd, cmd.id->tty); |
|
|
563 | } |
|
|
564 | else |
|
|
565 | { |
|
|
566 | delete cmd.id; |
|
|
567 | cmd.id = 0; |
|
|
568 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
569 | } |
|
|
570 | } |
|
|
571 | else if (cmd.type == command::login) |
|
|
572 | { |
|
|
573 | #if UTMP_SUPPORT |
|
|
574 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
575 | { |
|
|
576 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
577 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
578 | } |
|
|
579 | #endif |
|
|
580 | } |
|
|
581 | else if (cmd.type == command::destroy) |
|
|
582 | { |
|
|
583 | rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
584 | |
|
|
585 | if (pty) |
|
|
586 | { |
|
|
587 | delete *pty; |
|
|
588 | ptys.erase (pty); |
|
|
589 | } |
|
|
590 | } |
|
|
591 | else |
|
|
592 | break; |
|
|
593 | } |
|
|
594 | |
|
|
595 | // destroy all ptys |
|
|
596 | for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
|
|
597 | delete *i; |
|
|
598 | } |
|
|
599 | |
|
|
600 | void rxvt_ptytty_server () |
|
|
601 | { |
|
|
602 | int sv[2]; |
|
|
603 | |
|
|
604 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
605 | rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
606 | |
|
|
607 | pid = fork (); |
|
|
608 | |
|
|
609 | if (pid < 0) |
|
|
610 | rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
611 | |
|
|
612 | if (pid) |
|
|
613 | { |
|
|
614 | // client, urxvt |
|
|
615 | sock_fd = sv[0]; |
|
|
616 | close (sv[1]); |
|
|
617 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
618 | } |
|
|
619 | else |
|
|
620 | { |
|
|
621 | // server, pty-helper |
|
|
622 | sock_fd = sv[1]; |
|
|
623 | |
|
|
624 | for (int fd = 0; fd < 1023; fd++) |
|
|
625 | if (fd != sock_fd) |
|
|
626 | close (fd); |
|
|
627 | |
|
|
628 | serve (); |
|
|
629 | _exit (EXIT_SUCCESS); |
|
|
630 | } |
|
|
631 | } |
|
|
632 | #endif |
|
|
633 | |
|
|
634 | // a "factory" *g* |
|
|
635 | rxvt_ptytty * |
|
|
636 | rxvt_new_ptytty () |
|
|
637 | { |
|
|
638 | #if PTYTTY_HELPER |
|
|
639 | if (pid > 0) |
|
|
640 | // use helper process |
|
|
641 | return new rxvt_ptytty_proxy; |
|
|
642 | else |
|
|
643 | #endif |
|
|
644 | return new rxvt_ptytty_unix; |
|
|
645 | } |
|
|
646 | |
322 | /*----------------------- end-of-file (C source) -----------------------*/ |
647 | /*----------------------- end-of-file (C source) -----------------------*/ |
|
|
648 | |