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1 | // This file is part of libptytty. Do not make local modifications. |
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2 | // http://software.schmorp.de/pkg/libptytty |
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3 | |
1 | /*--------------------------------*-C-*---------------------------------* |
4 | /*----------------------------------------------------------------------* |
2 | * File: ptytty.C |
5 | * File: ptytty.C |
3 | *----------------------------------------------------------------------* |
6 | *----------------------------------------------------------------------* |
4 | * |
7 | * |
5 | * All portions of code are copyright by their respective author/s. |
8 | * All portions of code are copyright by their respective author/s. |
6 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
9 | * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> |
… | |
… | |
19 | * You should have received a copy of the GNU General Public License |
22 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
23 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 | *---------------------------------------------------------------------*/ |
25 | *---------------------------------------------------------------------*/ |
23 | |
26 | |
24 | #include "../config.h" /* NECESSARY */ |
27 | #include "../config.h" |
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28 | |
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29 | #include "fdpass.h" |
25 | #include "rxvt.h" |
30 | #include "ptytty.h" |
26 | |
31 | |
27 | # include <cstdlib> |
32 | #include <cstdlib> |
28 | # include <cstring> |
33 | #include <cstring> |
29 | |
34 | |
30 | #ifdef HAVE_SYS_TYPES_H |
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31 | # include <sys/types.h> |
35 | #include <sys/types.h> |
32 | #endif |
36 | #include <sys/socket.h> |
33 | #ifdef HAVE_UNISTD_H |
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34 | # include <unistd.h> |
37 | #include <unistd.h> |
35 | #endif |
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36 | #ifdef HAVE_FCNTL_H |
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37 | # include <fcntl.h> |
38 | #include <fcntl.h> |
38 | #endif |
39 | |
39 | #ifdef HAVE_SYS_IOCTL_H |
40 | #ifdef HAVE_SYS_IOCTL_H |
40 | # include <sys/ioctl.h> |
41 | # include <sys/ioctl.h> |
41 | #endif |
42 | #endif |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
43 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
44 | # include <sys/stropts.h> /* for I_PUSH */ |
44 | #endif |
45 | #endif |
45 | #ifdef HAVE_ISASTREAM |
46 | #ifdef HAVE_ISASTREAM |
46 | # include <stropts.h> |
47 | # include <stropts.h> |
47 | #endif |
48 | #endif |
… | |
… | |
50 | #elif defined(HAVE_LIBUTIL_H) |
51 | #elif defined(HAVE_LIBUTIL_H) |
51 | # include <libutil.h> |
52 | # include <libutil.h> |
52 | #elif defined(HAVE_UTIL_H) |
53 | #elif defined(HAVE_UTIL_H) |
53 | # include <util.h> |
54 | # include <util.h> |
54 | #endif |
55 | #endif |
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56 | #ifdef TTY_GID_SUPPORT |
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57 | #include <grp.h> |
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58 | #endif |
55 | |
59 | |
56 | #include <cstdio> |
60 | #include <cstdio> |
57 | #include <grp.h> |
61 | |
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62 | ///////////////////////////////////////////////////////////////////////////// |
58 | |
63 | |
59 | /* ------------------------------------------------------------------------- * |
64 | /* ------------------------------------------------------------------------- * |
60 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
65 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
61 | * ------------------------------------------------------------------------- */ |
66 | * ------------------------------------------------------------------------- */ |
62 | /* |
67 | /* |
63 | * Returns pty file descriptor, or -1 on failure |
68 | * Returns pty file descriptor, or -1 on failure |
64 | * If successful, ttydev is set to the name of the slave device. |
69 | * If successful, ttydev is set to the name of the slave device. |
65 | * fd_tty _may_ also be set to an open fd to the slave device |
70 | * fd_tty _may_ also be set to an open fd to the slave device |
66 | */ |
71 | */ |
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72 | #if defined(UNIX98_PTY) |
67 | static int |
73 | static int |
68 | get_pty (int *fd_tty, char **ttydev) |
74 | get_pty (int *fd_tty, char **ttydev) |
69 | { |
75 | { |
70 | int pfd; |
76 | int pfd; |
71 | |
77 | |
72 | #ifdef PTYS_ARE_OPENPTY |
78 | # if defined(HAVE_GETPT) |
73 | char tty_name[sizeof "/dev/pts/????\0"]; |
79 | pfd = getpt(); |
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80 | # elif defined(HAVE_POSIX_OPENPT) |
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81 | pfd = posix_openpt (O_RDWR); |
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82 | # else |
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83 | pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); |
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84 | # endif |
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85 | if (pfd >= 0) |
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86 | { |
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87 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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88 | && unlockpt (pfd) == 0) |
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89 | { /* slave now unlocked */ |
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90 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
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91 | return pfd; |
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92 | } |
74 | |
93 | |
75 | rxvt_privileges(RESTORE); |
94 | close (pfd); |
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95 | } |
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96 | |
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97 | return -1; |
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98 | } |
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99 | #elif defined(HAVE_OPENPTY) |
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100 | static int |
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101 | get_pty (int *fd_tty, char **ttydev) |
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102 | { |
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103 | int pfd; |
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104 | int res; |
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105 | char tty_name[32]; |
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106 | |
76 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
107 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
77 | rxvt_privileges(IGNORE); |
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78 | |
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79 | if (res != -1) |
108 | if (res != -1) |
80 | { |
109 | { |
81 | *ttydev = strdup (tty_name); |
110 | *ttydev = strdup (tty_name); |
82 | return pfd; |
111 | return pfd; |
83 | } |
112 | } |
84 | #endif |
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85 | |
113 | |
86 | #ifdef PTYS_ARE__GETPTY |
114 | return -1; |
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115 | } |
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116 | #elif defined(HAVE__GETPTY) |
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117 | static int |
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118 | get_pty (int *fd_tty, char **ttydev) |
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119 | { |
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120 | int pfd; |
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121 | |
87 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
122 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
88 | if (*ttydev != NULL) |
123 | if (*ttydev != NULL) |
89 | return pfd; |
124 | return pfd; |
90 | #endif |
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91 | |
125 | |
92 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
126 | return -1; |
93 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
127 | } |
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128 | #elif defined(HAVE_DEV_PTC) |
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129 | static int |
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130 | get_pty (int *fd_tty, char **ttydev) |
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131 | { |
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132 | int pfd; |
94 | |
133 | |
95 | { |
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96 | # ifdef PTYS_ARE_GETPT |
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97 | pfd = getpt(); |
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98 | # else |
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99 | # ifdef PTYS_ARE_POSIX |
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100 | pfd = posix_openpt (O_RDWR); |
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101 | # else |
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102 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
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103 | # endif |
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104 | # endif |
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105 | |
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106 | if (pfd >= 0) |
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107 | { |
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108 | if (grantpt (pfd) == 0 /* change slave permissions */ |
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109 | && unlockpt (pfd) == 0) |
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110 | { /* slave now unlocked */ |
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111 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
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112 | return pfd; |
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113 | } |
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114 | close (pfd); |
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115 | } |
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116 | } |
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117 | # endif |
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118 | #endif |
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119 | |
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120 | #ifdef PTYS_ARE_PTC |
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121 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
134 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
122 | { |
135 | { |
123 | *ttydev = strdup (ttyname (pfd)); |
136 | *ttydev = strdup (ttyname (pfd)); |
124 | return pfd; |
137 | return pfd; |
125 | } |
138 | } |
126 | #endif |
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127 | |
139 | |
128 | #ifdef PTYS_ARE_CLONE |
140 | return -1; |
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141 | } |
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142 | #elif defined(HAVE_DEV_CLONE) |
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143 | static int |
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144 | get_pty (int *fd_tty, char **ttydev) |
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145 | { |
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146 | int pfd; |
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147 | |
129 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
148 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
130 | { |
149 | { |
131 | *ttydev = strdup (ptsname (pfd)); |
150 | *ttydev = strdup (ptsname (pfd)); |
132 | return pfd; |
151 | return pfd; |
133 | } |
152 | } |
134 | #endif |
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135 | |
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136 | #ifdef PTYS_ARE_NUMERIC |
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137 | { |
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138 | int idx; |
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139 | char *c1, *c2; |
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140 | char pty_name[] = "/dev/ptyp???"; |
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141 | char tty_name[] = "/dev/ttyp???"; |
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142 | |
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143 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
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144 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
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145 | for (idx = 0; idx < 256; idx++) |
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146 | { |
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147 | sprintf (c1, "%d", idx); |
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148 | sprintf (c2, "%d", idx); |
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149 | if (access (tty_name, F_OK) < 0) |
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150 | { |
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151 | idx = 256; |
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152 | break; |
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153 | } |
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154 | |
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155 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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156 | { |
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157 | if (access (tty_name, R_OK | W_OK) == 0) |
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158 | { |
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159 | *ttydev = strdup (tty_name); |
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160 | return pfd; |
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161 | } |
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162 | |
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163 | close (pfd); |
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164 | } |
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165 | } |
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166 | } |
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167 | #endif |
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168 | |
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169 | #ifdef PTYS_ARE_SEARCHED |
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170 | { |
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171 | const char *c1, *c2; |
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172 | char pty_name[] = "/dev/pty??"; |
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173 | char tty_name[] = "/dev/tty??"; |
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174 | |
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175 | # ifndef PTYCHAR1 |
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176 | # define PTYCHAR1 "pqrstuvwxyz" |
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177 | # endif |
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178 | # ifndef PTYCHAR2 |
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179 | # define PTYCHAR2 "0123456789abcdef" |
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180 | # endif |
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181 | |
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182 | for (c1 = PTYCHAR1; *c1; c1++) |
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183 | { |
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184 | pty_name[ (sizeof (pty_name) - 3)] = |
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185 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
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186 | for (c2 = PTYCHAR2; *c2; c2++) |
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187 | { |
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188 | pty_name[ (sizeof (pty_name) - 2)] = |
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189 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
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190 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
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191 | { |
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192 | if (access (tty_name, R_OK | W_OK) == 0) |
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193 | { |
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194 | *ttydev = strdup (tty_name); |
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195 | return pfd; |
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196 | } |
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197 | |
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198 | close (pfd); |
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199 | } |
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200 | } |
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201 | } |
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202 | } |
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203 | #endif |
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204 | |
153 | |
205 | return -1; |
154 | return -1; |
206 | } |
155 | } |
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156 | #else |
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157 | /* Based on the code in openssh/openbsd-compat/bsd-openpty.c */ |
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158 | static int |
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159 | get_pty (int *fd_tty, char **ttydev) |
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160 | { |
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161 | int pfd; |
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162 | int i; |
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163 | char pty_name[32]; |
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164 | char tty_name[32]; |
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165 | const char *majors = "pqrstuvwxyzabcde"; |
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166 | const char *minors = "0123456789abcdef"; |
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167 | for (i = 0; i < 256; i++) |
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168 | { |
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169 | snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); |
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170 | snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); |
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171 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
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172 | { |
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173 | snprintf(pty_name, 32, "/dev/ptyp%d", i); |
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174 | snprintf(tty_name, 32, "/dev/ttyp%d", i); |
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175 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) |
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176 | continue; |
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177 | } |
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178 | if (access (tty_name, R_OK | W_OK) == 0) |
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179 | { |
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180 | *ttydev = strdup (tty_name); |
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181 | return pfd; |
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182 | } |
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183 | |
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184 | close (pfd); |
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185 | } |
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186 | } |
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187 | #endif |
207 | |
188 | |
208 | /*----------------------------------------------------------------------*/ |
189 | /*----------------------------------------------------------------------*/ |
209 | /* |
190 | /* |
210 | * Returns tty file descriptor, or -1 on failure |
191 | * Returns tty file descriptor, or -1 on failure |
211 | */ |
192 | */ |
… | |
… | |
218 | /*----------------------------------------------------------------------*/ |
199 | /*----------------------------------------------------------------------*/ |
219 | /* |
200 | /* |
220 | * Make our tty a controlling tty so that /dev/tty points to us |
201 | * Make our tty a controlling tty so that /dev/tty points to us |
221 | */ |
202 | */ |
222 | static int |
203 | static int |
223 | control_tty (int fd_tty, const char *ttydev) |
204 | control_tty (int fd_tty) |
224 | { |
205 | { |
225 | #ifndef __QNX__ |
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226 | int fd; |
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227 | |
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228 | /* ---------------------------------------- */ |
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229 | # ifdef HAVE_SETSID |
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230 | setsid (); |
206 | setsid (); |
231 | # endif |
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232 | # if defined(HAVE_SETPGID) |
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233 | setpgid (0, 0); |
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234 | # elif defined(HAVE_SETPGRP) |
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235 | setpgrp (0, 0); |
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236 | # endif |
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237 | |
207 | |
238 | /* ---------------------------------------- */ |
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239 | # ifdef TIOCNOTTY |
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240 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
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241 | if (fd >= 0) |
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242 | { |
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243 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
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244 | close (fd); |
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245 | } |
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246 | # endif |
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247 | |
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248 | /* ---------------------------------------- */ |
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249 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
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250 | if (fd >= 0) |
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251 | close (fd); /* ouch: still have controlling tty */ |
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252 | |
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253 | /* ---------------------------------------- */ |
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254 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
208 | #if defined(HAVE_DEV_PTMX) && defined(I_PUSH) |
255 | /* |
209 | /* |
256 | * Push STREAMS modules: |
210 | * Push STREAMS modules: |
257 | * ptem: pseudo-terminal hardware emulation module. |
211 | * ptem: pseudo-terminal hardware emulation module. |
258 | * ldterm: standard terminal line discipline. |
212 | * ldterm: standard terminal line discipline. |
259 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
213 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
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276 | ioctl (fd_tty, I_PUSH, "ptem"); |
230 | ioctl (fd_tty, I_PUSH, "ptem"); |
277 | ioctl (fd_tty, I_PUSH, "ldterm"); |
231 | ioctl (fd_tty, I_PUSH, "ldterm"); |
278 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
232 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
279 | } |
233 | } |
280 | #endif |
234 | #endif |
281 | /* ---------------------------------------- */ |
235 | |
282 | # if defined(TIOCSCTTY) |
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283 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
236 | ioctl (fd_tty, TIOCSCTTY, NULL); |
284 | # elif defined(TIOCSETCTTY) |
237 | |
285 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
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286 | # else |
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287 | fd = open (ttydev, O_RDWR); |
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288 | if (fd >= 0) |
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289 | close (fd); |
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290 | # endif |
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291 | /* ---------------------------------------- */ |
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292 | fd = open ("/dev/tty", O_WRONLY); |
238 | int fd = open ("/dev/tty", O_WRONLY); |
293 | if (fd < 0) |
239 | if (fd < 0) |
294 | return -1; /* fatal */ |
240 | return -1; /* fatal */ |
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241 | |
295 | close (fd); |
242 | close (fd); |
296 | /* ---------------------------------------- */ |
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297 | #endif /* ! __QNX__ */ |
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298 | |
243 | |
299 | return 0; |
244 | return 0; |
300 | } |
245 | } |
301 | |
246 | |
302 | #ifndef NO_SETOWNER_TTYDEV |
247 | void |
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248 | ptytty::close_tty () |
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249 | { |
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250 | if (tty < 0) |
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251 | return; |
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252 | |
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253 | close (tty); |
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254 | tty = -1; |
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255 | } |
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256 | |
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257 | bool |
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258 | ptytty::make_controlling_tty () |
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259 | { |
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260 | return control_tty (tty) >= 0; |
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261 | } |
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262 | |
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263 | void |
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264 | ptytty::set_utf8_mode (bool on) |
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265 | { |
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266 | #ifdef IUTF8 |
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267 | if (pty < 0) |
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268 | return; |
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269 | |
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270 | struct termios tio; |
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271 | |
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272 | if (tcgetattr (pty, &tio) != -1) |
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273 | { |
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274 | tcflag_t new_cflag = tio.c_iflag; |
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275 | |
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276 | if (on) |
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277 | new_cflag |= IUTF8; |
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278 | else |
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279 | new_cflag &= ~IUTF8; |
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280 | |
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281 | if (new_cflag != tio.c_iflag) |
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282 | { |
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283 | tio.c_iflag = new_cflag; |
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284 | tcsetattr (pty, TCSANOW, &tio); |
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285 | } |
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286 | } |
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287 | #endif |
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288 | } |
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289 | |
303 | static struct ttyconf { |
290 | static struct ttyconf { |
304 | gid_t gid; |
291 | gid_t gid; |
305 | mode_t mode; |
292 | mode_t mode; |
306 | |
293 | |
307 | ttyconf () |
294 | ttyconf () |
… | |
… | |
316 | } |
303 | } |
317 | else |
304 | else |
318 | #endif /* TTY_GID_SUPPORT */ |
305 | #endif /* TTY_GID_SUPPORT */ |
319 | { |
306 | { |
320 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
307 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
321 | gid = getgid (); |
308 | gid = 0; |
322 | } |
309 | } |
323 | } |
310 | } |
324 | } ttyconf; |
311 | } ttyconf; |
325 | |
312 | |
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313 | ptytty_unix::ptytty_unix () |
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314 | { |
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315 | name = 0; |
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316 | #if UTMP_SUPPORT |
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317 | cmd_pid = 0; |
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318 | #endif |
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319 | } |
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320 | |
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321 | ptytty_unix::~ptytty_unix () |
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322 | { |
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323 | #if UTMP_SUPPORT |
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324 | logout (); |
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325 | #endif |
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326 | put (); |
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327 | } |
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328 | |
326 | void |
329 | void |
327 | rxvt_ptytty::privileges (rxvt_privaction action) |
330 | ptytty_unix::put () |
328 | { |
331 | { |
329 | if (!name || !*name) |
332 | chmod (name, RESTORE_TTY_MODE); |
330 | return; |
333 | chown (name, 0, ttyconf.gid); |
331 | |
334 | |
332 | rxvt_privileges (RESTORE); |
335 | close_tty (); |
333 | |
336 | |
334 | if (action == SAVE) |
337 | if (pty >= 0) |
335 | { |
338 | close (pty); |
336 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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337 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
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338 | if (lstat (name, &savestat) < 0) /* you lose out */ |
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339 | ; |
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340 | else |
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341 | # endif |
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342 | { |
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343 | saved = true; |
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344 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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345 | chmod (name, ttyconf.mode); |
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346 | # ifdef HAVE_REVOKE |
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347 | revoke (name); |
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348 | # endif |
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349 | } |
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350 | } |
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351 | else |
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352 | { /* action == RESTORE */ |
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353 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
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354 | if (saved) |
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355 | { |
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356 | chmod (name, savestat.st_mode); |
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357 | chown (name, savestat.st_uid, savestat.st_gid); |
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358 | } |
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359 | # else |
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360 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
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361 | chown (name, 0, 0); |
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362 | # endif |
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363 | |
339 | |
364 | } |
340 | free (name); |
365 | |
341 | |
366 | rxvt_privileges (IGNORE); |
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367 | } |
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368 | #endif |
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369 | |
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370 | rxvt_ptytty::rxvt_ptytty () |
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371 | { |
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372 | pty = tty = -1; |
342 | pty = tty = -1; |
373 | name = 0; |
343 | name = 0; |
374 | #ifndef NO_SETOWNER_TTYDEV |
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375 | saved = false; |
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376 | #endif |
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377 | #if UTMP_SUPPORT |
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378 | cmd_pid = 0; |
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379 | #endif |
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380 | } |
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381 | |
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382 | rxvt_ptytty::~rxvt_ptytty () |
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383 | { |
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384 | logout (); |
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385 | put (); |
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386 | } |
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387 | |
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388 | void |
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389 | |
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390 | rxvt_ptytty::close_tty () |
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391 | { |
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392 | if (tty < 0) |
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393 | return; |
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394 | |
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395 | close (tty); |
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396 | tty = -1; |
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397 | } |
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398 | |
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399 | void |
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400 | rxvt_ptytty::put () |
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401 | { |
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402 | #ifndef NO_SETOWNER_TTYDEV |
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403 | privileges (RESTORE); |
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404 | #endif |
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405 | |
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406 | if (pty >= 0) close (pty); |
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407 | close_tty (); |
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408 | free (name); |
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409 | |
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410 | pty = tty = -1; |
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411 | name = 0; |
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412 | } |
344 | } |
413 | |
345 | |
414 | bool |
346 | bool |
415 | rxvt_ptytty::make_controlling_tty () |
347 | ptytty_unix::get () |
416 | { |
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417 | return control_tty (tty, name) >= 0; |
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418 | } |
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419 | |
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420 | bool |
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421 | rxvt_ptytty::get () |
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422 | { |
348 | { |
423 | /* get master (pty) */ |
349 | /* get master (pty) */ |
424 | if ((pty = get_pty (&tty, &name)) < 0) |
350 | if ((pty = get_pty (&tty, &name)) < 0) |
425 | return false; |
351 | return false; |
426 | |
352 | |
… | |
… | |
428 | |
354 | |
429 | /* get slave (tty) */ |
355 | /* get slave (tty) */ |
430 | if (tty < 0) |
356 | if (tty < 0) |
431 | { |
357 | { |
432 | #ifndef NO_SETOWNER_TTYDEV |
358 | #ifndef NO_SETOWNER_TTYDEV |
433 | privileges (SAVE); |
359 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
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360 | chmod (name, ttyconf.mode); |
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361 | # ifdef HAVE_REVOKE |
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362 | revoke (name); |
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363 | # endif |
434 | #endif |
364 | #endif |
435 | |
365 | |
436 | if ((tty = get_tty (name)) < 0) |
366 | if ((tty = get_tty (name)) < 0) |
437 | { |
367 | { |
438 | put (); |
368 | put (); |
… | |
… | |
441 | } |
371 | } |
442 | |
372 | |
443 | return true; |
373 | return true; |
444 | } |
374 | } |
445 | |
375 | |
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376 | #if PTYTTY_HELPER |
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377 | |
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378 | static int sock_fd; |
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379 | static int pid; |
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380 | |
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381 | struct command |
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382 | { |
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383 | enum { get, login, destroy } type; |
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384 | |
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385 | ptytty *id; |
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386 | |
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387 | bool login_shell; |
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388 | int cmd_pid; |
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389 | char hostname[512]; // arbitrary, but should be plenty |
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390 | }; |
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391 | |
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392 | struct ptytty_proxy : ptytty |
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393 | { |
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394 | ptytty *id; |
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395 | |
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396 | ptytty_proxy () |
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397 | : id(0) |
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398 | { |
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399 | } |
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400 | |
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401 | ~ptytty_proxy (); |
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402 | |
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403 | bool get (); |
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404 | void login (int cmd_pid, bool login_shell, const char *hostname); |
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405 | }; |
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406 | |
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407 | bool |
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408 | ptytty_proxy::get () |
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409 | { |
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410 | command cmd; |
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411 | |
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412 | cmd.type = command::get; |
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413 | |
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414 | write (sock_fd, &cmd, sizeof (cmd)); |
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415 | |
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416 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
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417 | fatal ("protocol error while creating pty using helper process, aborting.\n"); |
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418 | |
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419 | if (!id) |
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420 | return false; |
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421 | |
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422 | if ((pty = ptytty_recv_fd (sock_fd)) < 0 |
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423 | || (tty = ptytty_recv_fd (sock_fd)) < 0) |
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424 | fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
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425 | |
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426 | return true; |
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427 | } |
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428 | |
446 | void |
429 | void |
447 | rxvt_ptytty::set_utf8_mode (bool on) |
430 | ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
448 | { |
431 | { |
449 | #ifdef IUTF8 |
432 | command cmd; |
450 | if (pty < 0) |
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451 | return; |
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452 | |
433 | |
453 | struct termios tio; |
434 | cmd.type = command::login; |
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435 | cmd.id = id; |
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436 | cmd.cmd_pid = cmd_pid; |
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437 | cmd.login_shell = login_shell; |
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438 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
454 | |
439 | |
455 | if (tcgetattr (pty, &tio) != -1) |
440 | write (sock_fd, &cmd, sizeof (cmd)); |
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441 | } |
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442 | |
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443 | ptytty_proxy::~ptytty_proxy () |
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444 | { |
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445 | if (id) |
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446 | { |
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447 | command cmd; |
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448 | |
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449 | cmd.type = command::destroy; |
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450 | cmd.id = id; |
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451 | |
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452 | write (sock_fd, &cmd, sizeof (cmd)); |
456 | { |
453 | } |
457 | tcflag_t new_cflag = tio.c_iflag; |
454 | } |
458 | |
455 | |
459 | if (on) |
456 | static |
460 | new_cflag |= IUTF8; |
457 | void serve () |
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458 | { |
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459 | command cmd; |
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460 | vector<ptytty *> ptys; |
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461 | |
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462 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
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463 | { |
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464 | if (cmd.type == command::get) |
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465 | { |
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466 | // -> id ptyfd ttyfd |
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467 | cmd.id = new ptytty_unix; |
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468 | |
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469 | if (cmd.id->get ()) |
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470 | { |
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471 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
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472 | ptys.push_back (cmd.id); |
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473 | |
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474 | ptytty_send_fd (sock_fd, cmd.id->pty); |
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475 | ptytty_send_fd (sock_fd, cmd.id->tty); |
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476 | } |
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477 | else |
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478 | { |
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479 | delete cmd.id; |
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480 | cmd.id = 0; |
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481 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
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482 | } |
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483 | } |
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484 | else if (cmd.type == command::login) |
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485 | { |
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486 | #if UTMP_SUPPORT |
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487 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
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488 | { |
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489 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
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490 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
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491 | } |
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492 | #endif |
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493 | } |
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494 | else if (cmd.type == command::destroy) |
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495 | { |
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496 | ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
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497 | |
|
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498 | if (pty) |
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499 | { |
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500 | delete *pty; |
|
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501 | ptys.erase (pty); |
|
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502 | } |
|
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503 | } |
461 | else |
504 | else |
462 | new_cflag &= ~IUTF8; |
505 | break; |
|
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506 | } |
463 | |
507 | |
464 | if (new_cflag != tio.c_iflag) |
508 | // destroy all ptys |
465 | { |
509 | for (ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
466 | tio.c_iflag = new_cflag; |
510 | delete *i; |
467 | tcsetattr (pty, TCSANOW, &tio); |
511 | } |
468 | } |
512 | |
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513 | void ptytty_server () |
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514 | { |
|
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515 | int sv[2]; |
|
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516 | |
|
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517 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
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518 | fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
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519 | |
|
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520 | pid = fork (); |
|
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521 | |
|
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522 | if (pid < 0) |
|
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523 | fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
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524 | |
|
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525 | if (pid) |
469 | } |
526 | { |
|
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527 | // client, process |
|
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528 | sock_fd = sv[0]; |
|
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529 | close (sv[1]); |
|
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530 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
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531 | } |
|
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532 | else |
|
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533 | { |
|
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534 | // server, pty-helper |
|
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535 | sock_fd = sv[1]; |
|
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536 | |
|
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537 | for (int fd = 0; fd < 1023; fd++) |
|
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538 | if (fd != sock_fd) |
|
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539 | close (fd); |
|
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540 | |
|
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541 | serve (); |
|
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542 | _exit (EXIT_SUCCESS); |
|
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543 | } |
|
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544 | } |
|
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545 | |
470 | #endif |
546 | #endif |
|
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547 | |
|
|
548 | // a "factory" *g* |
|
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549 | ptytty * |
|
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550 | new_ptytty () |
|
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551 | { |
|
|
552 | #if PTYTTY_HELPER |
|
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553 | if (pid > 0) |
|
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554 | // use helper process |
|
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555 | return new ptytty_proxy; |
|
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556 | else |
|
|
557 | #endif |
|
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558 | return new ptytty_unix; |
471 | } |
559 | } |
472 | |
560 | |
473 | /*----------------------- end-of-file (C source) -----------------------*/ |
561 | /*----------------------- end-of-file (C source) -----------------------*/ |
474 | |
562 | |