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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 #include <signal.h>
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45
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46 #ifdef __CYGWIN32__
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47 # include <sys/termios.h>
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48 #endif
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49
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1030
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50 #ifdef HAVE_SYS_IOCTL_H
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7
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51 # include <sys/ioctl.h>
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52 #endif
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53
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54 #if HAVE_STROPTS_H
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55 #include <sys/types.h>
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56 #ifdef sinix
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57 #define buf_T __system_buf_t__
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58 #endif
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59 #include <stropts.h>
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60 #ifdef sinix
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61 #undef buf_T
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62 #endif
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63 # ifdef sun
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64 # include <sys/conf.h>
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65 # endif
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66 #endif
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67
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1030
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68 #ifdef HAVE_UNISTD_H
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7
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69 # include <unistd.h>
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70 #endif
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71
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72 #if HAVE_TERMIO_H
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73 # include <termio.h>
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74 #else
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1030
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75 # ifdef HAVE_TERMIOS_H
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7
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76 # include <termios.h>
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77 # endif
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78 #endif
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79
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80 #if HAVE_SYS_STREAM_H
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81 # include <sys/stream.h>
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82 #endif
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83
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84 #if HAVE_SYS_PTEM_H
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85 # include <sys/ptem.h>
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86 #endif
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87
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88 #if !defined(sun) && !defined(VMS) && !defined(MACOS)
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89 # include <sys/ioctl.h>
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90 #endif
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91
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92 #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL)
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93 # include <sys/ttold.h>
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94 #endif
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95
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96 #ifdef ISC
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97 # include <sys/tty.h>
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98 # include <sys/sioctl.h>
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99 # include <sys/pty.h>
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100 #endif
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101
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102 #ifdef sgi
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103 # include <sys/sysmacros.h>
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104 #endif
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105
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106 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux)
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107 # define hpux
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108 #endif
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109
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110 /*
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111 * if no PTYRANGE[01] is in the config file, we pick a default
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112 */
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113 #ifndef PTYRANGE0
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114 # define PTYRANGE0 "qprs"
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115 #endif
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116 #ifndef PTYRANGE1
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117 # define PTYRANGE1 "0123456789abcdef"
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118 #endif
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119
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120 /* SVR4 pseudo ttys don't seem to work with SCO-5 */
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121 #ifdef M_UNIX
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122 # undef HAVE_SVR4_PTYS
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123 #endif
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124
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125 static void initmaster __ARGS((int));
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126
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127 /*
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128 * Open all ptys with O_NOCTTY, just to be on the safe side
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129 * (RISCos mips breaks otherwise)
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130 */
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131 #ifndef O_NOCTTY
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132 # define O_NOCTTY 0
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133 #endif
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134
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135 static void
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136 initmaster(f)
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137 int f;
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138 {
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139 #ifndef VMS
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140 # ifdef POSIX
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141 tcflush(f, TCIOFLUSH);
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142 # else
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143 # ifdef TIOCFLUSH
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144 (void)ioctl(f, TIOCFLUSH, (char *) 0);
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145 # endif
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146 # endif
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147 # ifdef LOCKPTY
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148 (void)ioctl(f, TIOCEXCL, (char *) 0);
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149 # endif
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150 #endif
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151 }
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152
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153 /*
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154 * This causes a hang on some systems, but is required for a properly working
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155 * pty on others. Needs to be tuned...
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156 */
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157 int
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158 SetupSlavePTY(fd)
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159 int fd;
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160 {
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161 if (fd < 0)
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162 return 0;
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163 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX)
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164 # if defined(HAVE_SYS_PTEM_H) || defined(hpux)
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165 if (ioctl(fd, I_PUSH, "ptem") != 0)
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166 return -1;
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167 # endif
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168 if (ioctl(fd, I_PUSH, "ldterm") != 0)
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169 return -1;
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170 # ifdef sun
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171 if (ioctl(fd, I_PUSH, "ttcompat") != 0)
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172 return -1;
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173 # endif
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174 #endif
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175 return 0;
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176 }
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177
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178
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179 #if defined(OSX) && !defined(PTY_DONE)
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180 #define PTY_DONE
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181 int
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182 OpenPTY(ttyn)
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183 char **ttyn;
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184 {
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185 int f;
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186 static char TtyName[32];
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187
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188 if ((f = open_controlling_pty(TtyName)) < 0)
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189 return -1;
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190 initmaster(f);
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191 *ttyn = TtyName;
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192 return f;
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193 }
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194 #endif
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195
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196 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \
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197 && !defined(PTY_DONE)
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198 #define PTY_DONE
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199 int
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200 OpenPTY(ttyn)
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201 char **ttyn;
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202 {
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203 char *m, *s;
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204 int f;
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205 /* used for opening a new pty-pair: */
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206 static char PtyName[32];
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207 static char TtyName[32];
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208
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209 if ((f = getpseudotty(&s, &m)) < 0)
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210 return -1;
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211 #ifdef _SEQUENT_
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212 fvhangup(s);
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213 #endif
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214 strncpy(PtyName, m, sizeof(PtyName));
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215 strncpy(TtyName, s, sizeof(TtyName));
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216 initmaster(f);
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217 *ttyn = TtyName;
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218 return f;
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219 }
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220 #endif
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221
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222 #if defined(__sgi) && !defined(PTY_DONE)
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223 #define PTY_DONE
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224 int
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225 OpenPTY(ttyn)
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226 char **ttyn;
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227 {
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228 int f;
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229 char *name;
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230 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
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231
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232 /*
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233 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and
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234 * exec() /usr/adm/mkpts
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235 */
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236 sigcld = signal(SIGCHLD, SIG_DFL);
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237 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0);
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238 signal(SIGCHLD, sigcld);
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239
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240 if (name == 0)
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241 return -1;
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242 initmaster(f);
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243 *ttyn = name;
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244 return f;
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245 }
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246 #endif
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247
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248 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
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249 #define PTY_DONE
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250 int
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251 OpenPTY(ttyn)
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252 char **ttyn;
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253 {
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254 int f;
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255 struct stat buf;
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256 /* used for opening a new pty-pair: */
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257 static char TtyName[32];
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258
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259 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0)
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260 return -1;
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261 if (mch_fstat(f, &buf) < 0)
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262 {
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263 close(f);
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264 return -1;
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265 }
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266 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev));
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267 initmaster(f);
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268 *ttyn = TtyName;
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269 return f;
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270 }
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271 #endif
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272
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273 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux)
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274
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275 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! */
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276 #define PTY_DONE
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277 int
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278 OpenPTY(ttyn)
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279 char **ttyn;
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280 {
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281 int f;
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282 char *m, *ptsname();
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283 int unlockpt __ARGS((int)), grantpt __ARGS((int));
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284 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG);
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285 /* used for opening a new pty-pair: */
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286 static char TtyName[32];
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287
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288 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
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289 return -1;
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290
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291 /*
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292 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and
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293 * exec()s pt_chmod
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294 */
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295 sigcld = signal(SIGCHLD, SIG_DFL);
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296 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))
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297 {
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298 signal(SIGCHLD, sigcld);
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299 close(f);
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300 return -1;
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301 }
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302 signal(SIGCHLD, sigcld);
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303 strncpy(TtyName, m, sizeof(TtyName));
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304 initmaster(f);
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305 *ttyn = TtyName;
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306 return f;
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307 }
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308 #endif
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309
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310 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE)
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311 #define PTY_DONE
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312
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313 #ifdef _IBMR2
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314 int aixhack = -1;
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315 #endif
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316
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317 int
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318 OpenPTY(ttyn)
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319 char **ttyn;
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320 {
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321 int f;
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322 /* used for opening a new pty-pair: */
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323 static char TtyName[32];
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324
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325 /* a dumb looking loop replaced by mycrofts code: */
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326 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0)
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327 return -1;
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328 strncpy(TtyName, ttyname(f), sizeof(TtyName));
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1076
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329 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
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7
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330 {
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331 close(f);
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332 return -1;
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333 }
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334 initmaster(f);
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335 # ifdef _IBMR2
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336 if (aixhack >= 0)
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337 close(aixhack);
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338 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0)
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339 {
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340 close(f);
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341 return -1;
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342 }
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343 # endif
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344 *ttyn = TtyName;
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345 return f;
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346 }
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347 #endif
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348
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349 #ifndef PTY_DONE
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350
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351 # ifdef hpux
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352 static char PtyProto[] = "/dev/ptym/ptyXY";
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353 static char TtyProto[] = "/dev/pty/ttyXY";
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354 # else
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355 # ifdef __BEOS__
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356 static char PtyProto[] = "/dev/pt/XY";
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357 static char TtyProto[] = "/dev/tt/XY";
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358 # else
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359 static char PtyProto[] = "/dev/ptyXY";
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360 static char TtyProto[] = "/dev/ttyXY";
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361 # endif
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362 # endif
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363
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364 int
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365 OpenPTY(ttyn)
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366 char **ttyn;
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367 {
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368 char *p, *q, *l, *d;
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369 int f;
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370 /* used for opening a new pty-pair: */
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371 static char PtyName[32];
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372 static char TtyName[32];
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373
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374 strcpy(PtyName, PtyProto);
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375 strcpy(TtyName, TtyProto);
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376 for (p = PtyName; *p != 'X'; p++)
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377 ;
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378 for (q = TtyName; *q != 'X'; q++)
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379 ;
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380 for (l = PTYRANGE0; (*p = *l) != '\0'; l++)
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381 {
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382 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++)
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383 {
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384 #if !defined(MACOS) || defined(USE_CARBONIZED)
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385 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)
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386 #else
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387 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1)
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388 #endif
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389 continue;
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390 q[0] = *l;
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391 q[1] = *d;
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392 #ifndef MACOS
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1076
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393 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK))
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7
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394 {
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395 close(f);
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396 continue;
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397 }
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398 #endif
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399 #if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3)
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400 /* Hack to ensure that the slave side of the pty is
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401 * unused. May not work in anything other than SunOS4.1
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402 */
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403 {
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404 int pgrp;
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405
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406 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */
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407 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)
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408 {
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409 close(f);
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410 continue;
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411 }
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412 }
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413 #endif
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414 initmaster(f);
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415 *ttyn = TtyName;
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416 return f;
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417 }
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418 }
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419 return -1;
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420 }
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421 #endif
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