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/*
* wall.c Write to all users logged in.
*
* Usage: wall [text]
*
* Version: @(#)wall 2.73 25-Nov-1997 MvS
*
* This file is part of the sysvinit suite,
* Copyright 1991-1997 Miquel van Smoorenburg.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
char *Version = "@(#) wall 2.73 25-Nov-1997 MvS";
#define MAXLEN 4096
extern void wall(char *, int, int);
int main(int argc, char **argv)
{
char buf[MAXLEN];
char line[83];
int f, ch;
int len = 0;
int remote = 0;
char *p;
buf[0] = 0;
while((ch = getopt(argc, argv, "n")) != EOF)
switch(ch) {
case 'n':
/*
* Undocumented option for suppressing
* banner from rpc.rwalld.
*/
remote = 1;
break;
default:
fprintf(stderr, "usage: wall [message]\n");
return 1;
break;
}
if ((argc - optind) > 0) {
for(f = optind; f < argc; f++) {
len += strlen(argv[f]) + 1;
if (len >= MAXLEN) break;
strcat(buf, argv[f]);
strcat(buf, " ");
}
strcat(buf, "\r\n");
} else {
while(fgets(line, 80, stdin)) {
/*
* Make sure that line ends in \r\n
*/
for(p = line; *p && *p != '\n'; p++)
;
strcpy(p, "\r\n");
len += strlen(line);
if (len >= MAXLEN) break;
strcat(buf, line);
}
}
wall(buf, 0, remote);
return 0;
}
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