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7
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1 /* vi:set ts=8 sts=4 sw=4:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9 /*
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10 * The stuff in this file mostly comes from the "screen" program.
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11 * Included with permission from Juergen Weigert.
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12 * Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c.
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13 *
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14 * It has been modified to work better with Vim.
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15 * The parts that are not used in Vim have been deleted.
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16 * See the "screen" sources for the complete stuff.
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17 */
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18
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19 /* Copyright (c) 1993
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20 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
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21 * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
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22 * Copyright (c) 1987 Oliver Laumann
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23 *
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24 * This program is free software; you can redistribute it and/or modify
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25 * it under the terms of the GNU General Public License as published by
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26 * the Free Software Foundation; either version 2, or (at your option)
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27 * any later version.
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28 *
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29 * This program is distributed in the hope that it will be useful,
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30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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32 * GNU General Public License for more details.
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33 *
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34 * You should have received a copy of the GNU General Public License
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35 * along with this program (see the file COPYING); if not, write to the
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36 * Free Software Foundation, Inc.,
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37 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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38 */
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39
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40 /* RCS_ID("$Id$ FAU") */
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41
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42 #include "vim.h"
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43
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44 #ifdef HAVE_FCNTL_H
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45 # include <fcntl.h>
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46 #endif
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47
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48 #include <signal.h>
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49
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50 #ifdef __CYGWIN32__
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51 # include <sys/termios.h>
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52 #endif
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53
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54 #if HAVE_SYS_IOCTL_H
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55 # include <sys/ioctl.h>
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56 #endif
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57
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58 #if HAVE_STROPTS_H
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59 #include <sys/types.h>
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60 #ifdef sinix
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61 #define buf_T __system_buf_t__
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62 #endif
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63 #include <stropts.h>
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64 #ifdef sinix
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65 #undef buf_T
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66 #endif
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67 # ifdef sun
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68 # include <sys/conf.h>
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69 # endif
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70 #endif
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71
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72 #if HAVE_UNISTD_H
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73 # include <unistd.h>
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74 #endif
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75
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76 #if HAVE_TERMIO_H
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77 # include <termio.h>
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78 #else
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79 # if HAVE_TERMIOS_H
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80 # include <termios.h>
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81 # endif
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82 #endif
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83
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84 #if HAVE_SYS_STREAM_H
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85 # include <sys/stream.h>
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86 #endif
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87
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88 #if HAVE_SYS_PTEM_H
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89 # include <sys/ptem.h>
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90 #endif
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91
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92 #if !defined(sun) && !defined(VMS) && !defined(MACOS)
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93 # include <sys/ioctl.h>
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94 #endif
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95
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96 #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL)
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97 # include <sys/ttold.h>
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98 #endif
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99
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100 #ifdef ISC
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101 # include <sys/tty.h>
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102 # include <sys/sioctl.h>
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103 # include <sys/pty.h>
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104 #endif
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105
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106 #ifdef sgi
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107 # include <sys/sysmacros.h>
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108 #endif
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109
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110 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux)
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111 # define hpux
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112 #endif
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113
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114 /*
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115 * if no PTYRANGE[01] is in the config file, we pick a default
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116 */
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117 #ifndef PTYRANGE0
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118 # define PTYRANGE0 "qprs"
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119 #endif
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120 #ifndef PTYRANGE1
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121 # define PTYRANGE1 "0123456789abcdef"
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122 #endif
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123
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124 /* SVR4 pseudo ttys don't seem to work with SCO-5 */
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125 #ifdef M_UNIX
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126 # undef HAVE_SVR4_PTYS
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127 #endif
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128
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129 static void initmaster __ARGS((int));
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130
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131 /*
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132 * Open all ptys with O_NOCTTY, just to be on the safe side
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133 * (RISCos mips breaks otherwise)
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134 */
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135 #ifndef O_NOCTTY
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136 # define O_NOCTTY 0
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137 #endif
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138
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139 static void
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140 initmaster(f)
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141 int f;
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142 {
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143 #ifndef VMS
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144 # ifdef POSIX
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145 tcflush(f, TCIOFLUSH);
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146 # else
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147 # ifdef TIOCFLUSH
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148 (void)ioctl(f, TIOCFLUSH, (char *) 0);
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149 # endif
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150 # endif
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151 # ifdef LOCKPTY
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152 (void)ioctl(f, TIOCEXCL, (char *) 0);
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153 # endif
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154 #endif
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155 }
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156
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157 /*
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158 * This causes a hang on some systems, but is required for a properly working
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159 * pty on others. Needs to be tuned...
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160 */
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161 int
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162 SetupSlavePTY(fd)
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163 int fd;
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164 {
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165 if (fd < 0)
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166 return 0;
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167 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX)
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168 # if defined(HAVE_SYS_PTEM_H) || defined(hpux)
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169 if (ioctl(fd, I_PUSH, "ptem") != 0)
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170 return -1;
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171 # endif
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172 if (ioctl(fd, I_PUSH, "ldterm") != 0)
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173 return -1;
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174 # ifdef sun
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175 if (ioctl(fd, I_PUSH, "ttcompat") != 0)
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176 return -1;
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177 # endif
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178 #endif
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179 return 0;
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180 }
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181
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182
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183 #if defined(OSX) && !defined(PTY_DONE)
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184 #define PTY_DONE
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185 int
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186 OpenPTY(ttyn)
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187 char **ttyn;
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188 {
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189 int f;
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190 static char TtyName[32];
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191
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192 if ((f = open_controlling_pty(TtyName)) < 0)
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193 return -1;
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194 initmaster(f);
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195 *ttyn = TtyName;
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196 return f;
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197 }
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198 #endif
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199
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200 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \
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201 && !defined(PTY_DONE)
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202 #define PTY_DONE
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203 int
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204 OpenPTY(ttyn)
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205 char **ttyn;
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206 {
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207 char *m, *s;
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208 int f;
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209 /* used for opening a new pty-pair: */
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210 static char PtyName[32];
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211 static char TtyName[32];
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212
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213 if ((f = getpseudotty(&s, &m)) < 0)
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214 return -1;
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215 #ifdef _SEQUENT_
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216 fvhangup(s);
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217 #endif
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218 strncpy(PtyName, m, sizeof(PtyName));
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219 strncpy(TtyName, s, sizeof(TtyName));
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220 initmaster(f);
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221 *ttyn = TtyName;
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222 return f;
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223 }
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224 #endif
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225
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226 #if defined(__sgi) && !defined(PTY_DONE)
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227 #define PTY_DONE
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228 int
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229 OpenPTY(ttyn)
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230 char **ttyn;
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231 {
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232 int f;
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233 char *name;
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234 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
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235
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236 /*
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237 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and
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238 * exec() /usr/adm/mkpts
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239 */
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240 sigcld = signal(SIGCHLD, SIG_DFL);
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241 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0);
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242 signal(SIGCHLD, sigcld);
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243
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244 if (name == 0)
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245 return -1;
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246 initmaster(f);
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247 *ttyn = name;
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248 return f;
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249 }
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250 #endif
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251
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252 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
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253 #define PTY_DONE
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254 int
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255 OpenPTY(ttyn)
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256 char **ttyn;
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257 {
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258 int f;
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259 struct stat buf;
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260 /* used for opening a new pty-pair: */
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261 static char TtyName[32];
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262
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263 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0)
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264 return -1;
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265 if (mch_fstat(f, &buf) < 0)
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266 {
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267 close(f);
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268 return -1;
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269 }
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270 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev));
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271 initmaster(f);
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272 *ttyn = TtyName;
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273 return f;
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274 }
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275 #endif
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276
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277 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux)
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278
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279 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! */
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280 #define PTY_DONE
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281 int
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282 OpenPTY(ttyn)
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283 char **ttyn;
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284 {
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285 int f;
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286 char *m, *ptsname();
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287 int unlockpt __ARGS((int)), grantpt __ARGS((int));
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288 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
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289 /* used for opening a new pty-pair: */
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290 static char TtyName[32];
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291
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292 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
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293 return -1;
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294
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295 /*
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296 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and
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297 * exec()s pt_chmod
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298 */
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299 sigcld = signal(SIGCHLD, SIG_DFL);
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300 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))
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301 {
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302 signal(SIGCHLD, sigcld);
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303 close(f);
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304 return -1;
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305 }
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306 signal(SIGCHLD, sigcld);
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307 strncpy(TtyName, m, sizeof(TtyName));
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308 initmaster(f);
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309 *ttyn = TtyName;
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310 return f;
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311 }
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312 #endif
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313
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314 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
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315 #define PTY_DONE
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316
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317 #ifdef _IBMR2
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318 int aixhack = -1;
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319 #endif
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320
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321 int
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322 OpenPTY(ttyn)
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323 char **ttyn;
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324 {
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325 int f;
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326 /* used for opening a new pty-pair: */
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327 static char TtyName[32];
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328
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329 /* a dumb looking loop replaced by mycrofts code: */
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330 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0)
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331 return -1;
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332 strncpy(TtyName, ttyname(f), sizeof(TtyName));
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333 if (geteuid() && mch_access(TtyName, R_OK | W_OK))
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334 {
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335 close(f);
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336 return -1;
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337 }
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338 initmaster(f);
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339 # ifdef _IBMR2
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340 if (aixhack >= 0)
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341 close(aixhack);
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342 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0)
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343 {
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344 close(f);
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345 return -1;
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346 }
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347 # endif
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348 *ttyn = TtyName;
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349 return f;
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350 }
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351 #endif
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352
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353 #ifndef PTY_DONE
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354
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355 # ifdef hpux
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356 static char PtyProto[] = "/dev/ptym/ptyXY";
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357 static char TtyProto[] = "/dev/pty/ttyXY";
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358 # else
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359 # ifdef __BEOS__
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360 static char PtyProto[] = "/dev/pt/XY";
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361 static char TtyProto[] = "/dev/tt/XY";
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362 # else
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363 static char PtyProto[] = "/dev/ptyXY";
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364 static char TtyProto[] = "/dev/ttyXY";
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365 # endif
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366 # endif
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367
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368 int
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369 OpenPTY(ttyn)
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370 char **ttyn;
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371 {
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372 char *p, *q, *l, *d;
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373 int f;
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374 /* used for opening a new pty-pair: */
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375 static char PtyName[32];
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376 static char TtyName[32];
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377
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378 strcpy(PtyName, PtyProto);
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379 strcpy(TtyName, TtyProto);
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380 for (p = PtyName; *p != 'X'; p++)
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381 ;
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382 for (q = TtyName; *q != 'X'; q++)
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383 ;
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384 for (l = PTYRANGE0; (*p = *l) != '\0'; l++)
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385 {
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386 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++)
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387 {
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388 #if !defined(MACOS) || defined(USE_CARBONIZED)
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389 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
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390 #else
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391 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1)
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392 #endif
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393 continue;
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394 q[0] = *l;
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395 q[1] = *d;
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396 #ifndef MACOS
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397 if (geteuid() && mch_access(TtyName, R_OK | W_OK))
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398 {
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399 close(f);
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400 continue;
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401 }
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402 #endif
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403 #if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3)
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404 /* Hack to ensure that the slave side of the pty is
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405 * unused. May not work in anything other than SunOS4.1
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406 */
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407 {
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408 int pgrp;
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409
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410 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */
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411 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)
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412 {
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413 close(f);
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414 continue;
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415 }
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416 }
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417 #endif
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418 initmaster(f);
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419 *ttyn = TtyName;
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420 return f;
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421 }
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422 }
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423 return -1;
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424 }
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425 #endif
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