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1 /* TTY console functions.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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25 /* Authors: Ben Wing and Chuck Thompson. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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30 #include "console-tty.h"
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31 #include "console-stream.h"
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32 #include "events.h" /* for Vcontrolling_terminal */
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33 #include "faces.h"
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34 #include "frame.h"
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35 #include "lstream.h"
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36 #include "redisplay.h"
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37 #include "sysdep.h"
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38 #ifdef MULE
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39 #include "mule-coding.h"
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40 #endif
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41
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42 DEFINE_CONSOLE_TYPE (tty);
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43
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44 Lisp_Object Qterminal_type;
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108
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45 Lisp_Object Qcontrolling_process;
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0
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46
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78
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47 extern Lisp_Object Vstdio_str; /* in console-stream.c */
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0
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48
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49 static void
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50 allocate_tty_console_struct (struct console *con)
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51 {
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185
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52 /* zero out all slots except the lisp ones ... */
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53 con->console_data = xnew_and_zero (struct tty_console);
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0
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54 CONSOLE_TTY_DATA (con)->terminal_type = Qnil;
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55 CONSOLE_TTY_DATA (con)->instream = Qnil;
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56 CONSOLE_TTY_DATA (con)->outstream = Qnil;
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57 }
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58
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59 static void
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60 tty_init_console (struct console *con, Lisp_Object props)
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61 {
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108
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62 Lisp_Object tty = CONSOLE_CONNECTION (con);
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63 Lisp_Object terminal_type = Qnil, controlling_process = Qnil;
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0
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64 int infd, outfd;
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108
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65 struct gcpro gcpro1, gcpro2;
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0
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66
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108
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67 GCPRO2 (terminal_type, controlling_process);
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0
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68
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69 terminal_type = Fplist_get (props, Qterminal_type, Qnil);
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108
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70 controlling_process = Fplist_get(props, Qcontrolling_process, Qnil);
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185
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71
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0
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72 /* Determine the terminal type */
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73
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74 if (!NILP (terminal_type))
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75 CHECK_STRING (terminal_type);
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76 else
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77 {
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78 char *temp_type = (char *) getenv ("TERM");
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79
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80 if (!temp_type)
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81 {
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82 error ("Cannot determine terminal type");
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83 }
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84 else
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85 terminal_type = build_string (temp_type);
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86 }
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87
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108
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88 /* Determine the controlling process */
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89 if (!NILP (controlling_process))
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90 CHECK_INT (controlling_process);
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91
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0
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92 /* Open the specified console */
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93
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94 allocate_tty_console_struct (con);
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195
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95 if (internal_equal (tty, Vstdio_str, 0))
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0
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96 {
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97 infd = fileno (stdin);
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98 outfd = fileno (stdout);
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99 CONSOLE_TTY_DATA (con)->is_stdio = 1;
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100 }
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101 else
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102 {
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16
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103 infd = outfd = open ((char *) XSTRING_DATA (tty), O_RDWR);
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104 if (infd < 0)
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16
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105 error ("Unable to open tty %s", XSTRING_DATA (tty));
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106 CONSOLE_TTY_DATA (con)->is_stdio = 0;
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107 }
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185
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108
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109 CONSOLE_TTY_DATA (con)->infd = infd;
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110 CONSOLE_TTY_DATA (con)->outfd = outfd;
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111 CONSOLE_TTY_DATA (con)->instream = make_filedesc_input_stream (infd, 0,
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112 -1, 0);
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113 CONSOLE_TTY_DATA (con)->outstream = make_filedesc_output_stream (outfd, 0,
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114 -1, 0);
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70
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115 #ifdef MULE
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116 CONSOLE_TTY_DATA (con)->instream =
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117 make_decoding_input_stream (XLSTREAM (CONSOLE_TTY_DATA (con)->instream),
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118 Fget_coding_system (Vkeyboard_coding_system));
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119 Lstream_set_character_mode (XLSTREAM (CONSOLE_TTY_DATA (con)->instream));
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120 CONSOLE_TTY_DATA (con)->outstream =
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121 make_encoding_output_stream (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream),
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122 Fget_coding_system (Vterminal_coding_system));
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123 #endif /* MULE */
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0
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124 CONSOLE_TTY_DATA (con)->terminal_type = terminal_type;
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108
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125 CONSOLE_TTY_DATA (con)->controlling_process = controlling_process;
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153
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126
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127 #ifdef HAVE_GPM
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128 connect_to_gpm(con);
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129 #endif
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130
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0
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131 if (NILP (CONSOLE_NAME (con)))
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132 CONSOLE_NAME (con) = Ffile_name_nondirectory (tty);
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133 {
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134 int tty_pg;
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135 int controlling_tty_pg;
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136 int cfd;
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137
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138 /* OK, the only sure-fire way I can think of to determine
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139 whether a particular TTY is our controlling TTY is to check
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140 if it has the same foreground process group as our controlling
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141 TTY. This is OK because a process group can never simultaneously
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142 be the foreground process group of two TTY's (in that case it
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143 would have two controlling TTY's, which is not allowed). */
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144
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145 EMACS_GET_TTY_PROCESS_GROUP (infd, &tty_pg);
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146 cfd = open ("/dev/tty", O_RDWR, 0);
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147 EMACS_GET_TTY_PROCESS_GROUP (cfd, &controlling_tty_pg);
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148 close (cfd);
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149 if (tty_pg == controlling_tty_pg)
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150 {
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151 CONSOLE_TTY_DATA (con)->controlling_terminal = 1;
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152 XSETCONSOLE (Vcontrolling_terminal, con);
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153 munge_tty_process_group ();
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154 }
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155 else
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156 CONSOLE_TTY_DATA (con)->controlling_terminal = 0;
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157 }
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158
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159 UNGCPRO;
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160 }
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161
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162 static void
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163 tty_mark_console (struct console *con, void (*markobj) (Lisp_Object))
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164 {
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165 ((markobj) (CONSOLE_TTY_DATA (con)->terminal_type));
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166 ((markobj) (CONSOLE_TTY_DATA (con)->instream));
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167 ((markobj) (CONSOLE_TTY_DATA (con)->outstream));
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168 }
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169
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170 static int
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171 tty_initially_selected_for_input (struct console *con)
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172 {
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173 return 1;
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174 }
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175
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176 static void
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177 free_tty_console_struct (struct console *con)
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178 {
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179 struct tty_console *tcon = (struct tty_console *) con->console_data;
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180 if (tcon && tcon->term_entry_buffer) /* allocated in term_init () */
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181 xfree (tcon->term_entry_buffer);
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182 if (tcon)
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183 xfree (tcon);
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184 }
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185
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186 static void
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187 tty_delete_console (struct console *con)
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188 {
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189 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->instream));
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190 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream));
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191 if (!CONSOLE_TTY_DATA (con)->is_stdio)
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192 close (CONSOLE_TTY_DATA (con)->infd);
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193 if (CONSOLE_TTY_DATA (con)->controlling_terminal)
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194 {
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195 Vcontrolling_terminal = Qnil;
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196 unmunge_tty_process_group ();
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197 }
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198 free_tty_console_struct (con);
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199 }
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200
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201
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202 static struct console *
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203 decode_tty_console (Lisp_Object console)
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204 {
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205 XSETCONSOLE (console, decode_console (console));
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206 CHECK_TTY_CONSOLE (console);
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207 return XCONSOLE (console);
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208 }
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209
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20
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210 DEFUN ("console-tty-terminal-type", Fconsole_tty_terminal_type, 0, 1, 0, /*
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211 Return the terminal type of TTY console CONSOLE.
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20
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212 */
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213 (console))
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214 {
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215 return CONSOLE_TTY_DATA (decode_tty_console (console))->terminal_type;
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216 }
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217
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108
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218 DEFUN ("console-tty-controlling-process", Fconsole_tty_controlling_process, 0, 1, 0, /*
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219 Return the controlling process of TTY console CONSOLE.
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220 */
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221 (console))
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222 {
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223 return CONSOLE_TTY_DATA (decode_tty_console (console))->controlling_process;
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224 }
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225
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226 Lisp_Object
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227 tty_semi_canonicalize_console_connection (Lisp_Object connection,
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228 Error_behavior errb)
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229 {
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230 return stream_semi_canonicalize_console_connection (connection, errb);
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231 }
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232
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233 Lisp_Object
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234 tty_canonicalize_console_connection (Lisp_Object connection,
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235 Error_behavior errb)
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236 {
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237 return stream_canonicalize_console_connection (connection, errb);
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0
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238 }
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239
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240 Lisp_Object
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241 tty_semi_canonicalize_device_connection (Lisp_Object connection,
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242 Error_behavior errb)
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243 {
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78
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244 return stream_semi_canonicalize_console_connection (connection, errb);
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245 }
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246
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247 Lisp_Object
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248 tty_canonicalize_device_connection (Lisp_Object connection,
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249 Error_behavior errb)
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250 {
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251 return stream_canonicalize_console_connection (connection, errb);
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252 }
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253
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254
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255 /************************************************************************/
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256 /* initialization */
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257 /************************************************************************/
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258
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259 void
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260 syms_of_console_tty (void)
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261 {
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20
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262 DEFSUBR (Fconsole_tty_terminal_type);
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263 DEFSUBR (Fconsole_tty_controlling_process);
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264 defsymbol (&Qterminal_type, "terminal-type");
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265 defsymbol (&Qcontrolling_process, "controlling-process");
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266 }
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267
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268 void
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269 console_type_create_tty (void)
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270 {
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271 INITIALIZE_CONSOLE_TYPE (tty, "tty", "console-tty-p");
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272
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273 /* console methods */
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274 CONSOLE_HAS_METHOD (tty, init_console);
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275 CONSOLE_HAS_METHOD (tty, mark_console);
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276 CONSOLE_HAS_METHOD (tty, initially_selected_for_input);
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277 CONSOLE_HAS_METHOD (tty, delete_console);
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278 CONSOLE_HAS_METHOD (tty, canonicalize_console_connection);
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279 CONSOLE_HAS_METHOD (tty, canonicalize_device_connection);
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280 CONSOLE_HAS_METHOD (tty, semi_canonicalize_console_connection);
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281 CONSOLE_HAS_METHOD (tty, semi_canonicalize_device_connection);
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282 }
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283
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284 void
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285 vars_of_console_tty (void)
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286 {
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287 Fprovide (Qtty);
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288 }
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