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1 /* -*-C-*-
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2 Client code to allow local and remote editing of files by XEmacs.
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3 Copyright (C) 1989 Free Software Foundation, Inc.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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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 Author: Andy Norman (ange@hplb.hpl.hp.com), based on
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24 'etc/emacsclient.c' from the GNU Emacs 18.52 distribution.
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25
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26 Please mail bugs and suggestions to the author at the above address.
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27 */
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28
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29 /*
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30 * This file incorporates new features added by Bob Weiner <weiner@mot.com>,
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31 * Darrell Kindred <dkindred@cmu.edu> and Arup Mukherjee <arup@cmu.edu>.
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32 * GNUATTACH support added by Ben Wing <wing@xemacs.org>.
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33 * Please see the note at the end of the README file for details.
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34 *
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35 * (If gnuserv came bundled with your emacs, the README file is probably
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36 * ../etc/gnuserv.README relative to the directory containing this file)
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37 */
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38
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39 #if 0
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40 /* Hand-munged RCS header */
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41 static char rcsid [] = "!Header: gnuclient.c,v 2.2 95/12/12 01:39:21 wing nene !";
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42 #endif
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43
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44 #include "gnuserv.h"
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45 #include "getopt.h"
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46
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47 #include <stdio.h>
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48 #include <stdlib.h>
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49 #include <string.h>
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50 #include <sys/types.h>
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51 #include <unistd.h>
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52
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53 #if !defined(SYSV_IPC) && !defined(UNIX_DOMAIN_SOCKETS) && \
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54 !defined(INTERNET_DOMAIN_SOCKETS)
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55 main ()
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56 {
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57 fprintf (stderr, "Sorry, the Emacs server is only "
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58 "supported on systems that have\n");
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59 fprintf (stderr, "Unix Domain sockets, Internet Domain "
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60 "sockets or System V IPC.\n");
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61 exit (1);
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62 } /* main */
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63 #else /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */
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64
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65 static char cwd[MAXPATHLEN+2]; /* current working directory when calculated */
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66 static char *cp = NULL; /* ptr into valid bit of cwd above */
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67
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68
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69 /*
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70 get_current_working_directory -- return the cwd.
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71 */
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72 static char *
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73 get_current_working_directory (void)
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74 {
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75 if (cp == NULL)
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76 { /* haven't calculated it yet */
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77 #ifdef BSD
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78 if (getwd (cwd) == 0)
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79 #else /* !BSD */
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80 if (getcwd (cwd,MAXPATHLEN) == NULL)
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81 #endif /* !BSD */
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82 {
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83 perror (progname);
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84 fprintf (stderr, "%s: unable to get current working directory\n",
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85 progname);
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86 exit (1);
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87 } /* if */
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88
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89 /* on some systems, cwd can look like '@machine/' ... */
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90 /* ignore everything before the first '/' */
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91 for (cp = cwd; *cp && *cp != '/'; ++cp)
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92 ;
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93
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94 } /* if */
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95
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96 return cp;
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97
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98 } /* get_current_working_directory */
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99
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100
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101 /*
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102 filename_expand -- try to convert the given filename into a fully-qualified
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103 pathname.
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104 */
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105 static void
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106 filename_expand (char *fullpath, char *filename)
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107 /* fullpath - returned full pathname */
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108 /* filename - filename to expand */
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109 {
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110 int len;
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111
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112 fullpath[0] = '\0';
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113
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114 if (filename[0] && filename[0] != '/')
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115 { /* relative filename */
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116 strcat (fullpath, get_current_working_directory ());
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117 len = strlen (fullpath);
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118
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119 if (len > 0 && fullpath[len-1] == '/') /* trailing slash already? */
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120 ; /* yep */
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121 else
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122 strcat (fullpath, "/"); /* nope, append trailing slash */
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123 } /* if */
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124
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125 strcat (fullpath,filename);
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126
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127 } /* filename_expand */
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128
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129 void
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130 main (int argc, char **argv)
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131 {
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132 int starting_line = 1; /* line to start editing at */
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133 char command[MAXPATHLEN+50]; /* emacs command buffer */
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134 char fullpath[MAXPATHLEN+1]; /* full pathname to file */
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135 #ifndef GNUATTACH
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136 int qflg = 0; /* quick edit, don't wait for
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137 * user to finish */
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138 #endif
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139 int errflg = 0; /* option error */
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140 int c; /* char from getopt */
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141 int s; /* socket / msqid to server */
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142 int connect_type; /* CONN_UNIX, CONN_INTERNET, or
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143 * CONN_IPC */
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144 #ifdef INTERNET_DOMAIN_SOCKETS
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145 char *hostarg = NULL; /* remote hostname */
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146 char thishost[HOSTNAMSZ]; /* this hostname */
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147 char remotepath[MAXPATHLEN+1]; /* remote pathname */
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148 int rflg = 0; /* pathname given on cmdline */
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149 u_short portarg = 0; /* port to server */
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150 char *ptr; /* return from getenv */
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151 #endif /* INTERNET_DOMAIN_SOCKETS */
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152 #ifdef SYSV_IPC
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153 struct msgbuf *msgp; /* message */
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154 #endif /* SYSV_IPC */
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155 #ifdef GNUATTACH
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156 char *tty;
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157 #endif
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158
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159 #ifdef INTERNET_DOMAIN_SOCKETS
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160 memset (remotepath, 0, sizeof (remotepath));
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161 #endif /* INTERNET_DOMAIN_SOCKETS */
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162
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163 progname = argv[0];
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164
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165 while ((c = getopt (argc, argv,
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166
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167 #ifdef INTERNET_DOMAIN_SOCKETS
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168 # ifdef GNUATTACH
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169 "h:p:r"
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170 # else
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171 "h:p:r:q"
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172 # endif
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173 #else /* !INTERNET_DOMAIN_SOCKETS */
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174 # ifdef GNUATTACH
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175 ""
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176 # else
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177 "q"
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178 # endif
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179 #endif /* !INTERNET_DOMAIN_SOCKETS */
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180
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181 )) != EOF)
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182 switch (c)
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183 {
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184 #ifndef GNUATTACH
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185 case 'q': /* quick mode specified */
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186 qflg++;
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187 break;
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188 #endif
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189
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190 #ifdef INTERNET_DOMAIN_SOCKETS
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191 case 'h': /* server host name specified */
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192 hostarg = optarg;
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193 break;
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194 case 'r': /* remote path from server specifed */
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195 strcpy (remotepath,optarg);
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196 rflg++;
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197 break;
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198 case 'p': /* port number specified */
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199 portarg = atoi (optarg);
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200 break;
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201 #endif /* INTERNET_DOMAIN_SOCKETS */
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202
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203 case '?':
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204 errflg++;
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205 } /* switch */
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206
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207 if (errflg)
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208 {
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209 fprintf (stderr,
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210 #ifdef INTERNET_DOMAIN_SOCKETS
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211 # ifdef GNUATTACH
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212 "usage: %s [-h hostname] [-p port] [-r pathname] "
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213 "[[+line] path] ...\n",
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214 # else
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215 "usage: %s [-q] [-h hostname] [-p port] [-r pathname] "
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216 "[[+line] path] ...\n",
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217 # endif
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218 #else /* !INTERNET_DOMAIN_SOCKETS */
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219 # ifdef GNUATTACH
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220 "usage: %s [[+line] path] ...\n",
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221 # else
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222 "usage: %s [-q] [[+line] path] ...\n",
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223 # endif
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224 #endif /* !INTERNET_DOMAIN_SOCKETS */
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225 progname);
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226 exit (1);
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227 } /* if */
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228
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229 #ifdef GNUATTACH
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230 tty = ttyname (0);
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231 if (!tty)
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232 {
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233 fprintf (stderr, "%s: Not connected to a tty", progname);
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234 exit (1);
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235 }
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236 #endif
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237
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238 #ifdef INTERNET_DOMAIN_SOCKETS
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239 connect_type = make_connection (hostarg, portarg, &s);
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240 #else
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241 connect_type = make_connection (NULL, (u_short) 0, &s);
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242 #endif
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243
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244 #ifdef INTERNET_DOMAIN_SOCKETS
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245 if (connect_type == (int) CONN_INTERNET)
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246 {
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247 gethostname (thishost, HOSTNAMSZ);
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248 if (!rflg)
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249 { /* attempt to generate a path
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250 * to this machine */
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251 if ((ptr = getenv ("GNU_NODE")) != NULL)
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252 /* user specified a path */
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253 strcpy (remotepath, ptr);
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254 }
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255 #if 0 /* This is really bogus... re-enable it if you must have it! */
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256 #if defined (hp9000s300) || defined (hp9000s800)
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257 else if (strcmp (thishost,hostarg))
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258 { /* try /net/thishost */
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259 strcpy (remotepath, "/net/"); /* (this fails using internet
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260 addresses) */
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261 strcat (remotepath, thishost);
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262 }
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263 #endif
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264 #endif
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265 }
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266 else
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267 { /* same machines, no need for path */
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268 remotepath[0] = '\0'; /* default is the empty path */
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269 }
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270 #endif /* INTERNET_DOMAIN_SOCKETS */
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271
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272 #ifdef SYSV_IPC
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273 if ((msgp = (struct msgbuf *)
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274 malloc (sizeof *msgp + GSERV_BUFSZ)) == NULL)
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275 {
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276 fprintf (stderr, "%s: not enough memory for message buffer\n", progname);
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277 exit (1);
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278 } /* if */
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279
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280 msgp->mtext[0] = '\0'; /* ready for later strcats */
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281 #endif /* SYSV_IPC */
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282
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283 #ifdef GNUATTACH
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284 ptr = getenv ("TERM");
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285 if (!ptr)
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286 {
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287 fprintf (stderr, "%s: unknown terminal type\n", progname);
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288 exit (1);
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289 }
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290 sprintf (command, "(server-tty-edit-files \"%s\" \"%s\" '(", tty, ptr);
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291 send_string (s, command);
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292 #else
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293 if (qflg)
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294 {
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295 send_string (s, "(server-edit-files-quickly '(");
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296 }
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297 else
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298 {
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299 send_string (s, "(server-edit-files '(");
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300 }
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301 #endif
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302
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303 for (; optind < argc; optind++)
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304 {
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305 if (*argv[optind] == '+')
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306 starting_line = atoi (argv[optind]);
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307 else
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308 {
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309 filename_expand (fullpath, argv[optind]);
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310 sprintf (command, "(%d . \"%s%s\")", starting_line,
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311
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312 #ifdef INTERNET_DOMAIN_SOCKETS
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313 remotepath,
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314 #else /* !INTERNET_DOMAIN_SOCKETS */
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315 "",
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316 #endif
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317 fullpath);
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318 send_string (s,command);
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319 starting_line = 1;
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320 } /* else */
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321 } /* for */
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322
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323 send_string (s,"))");
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324
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325 #ifdef SYSV_IPC
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326 if (connect_type == (int) CONN_IPC)
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327 disconnect_from_ipc_server (s, msgp, FALSE);
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328 #else /* !SYSV_IPC */
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329 if (connect_type != (int) CONN_IPC)
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330 disconnect_from_server (s, FALSE);
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331 #endif /* !SYSV_IPC */
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332
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333 exit (0);
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334
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335 } /* main */
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336
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337 #endif /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */
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