/* compile-command "cc -o fingerd fingerd.c" */

/*
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#define logfile "/site/usr/etc/finger.log"

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)fingerd.c	5.3 (Berkeley) 11/3/88";
#endif /* not lint */

/*
 * Finger server.
 */
#include <sys/types.h>
#include <netinet/in.h>
#include <stdio.h>
#include <ctype.h>

main(argc, argv)
	int argc;
	char *argv[];
{
	register char *sp;
	char line[512];
	struct sockaddr_in sin;
	int i, p[2], pid, status;
	FILE *fp;
	char *av[4];

	i = sizeof (sin);
	if (getpeername(0, &sin, &i) < 0)
		fatal(argv[0], "getpeername");
	if (fgets(line, sizeof(line), stdin) == NULL)
		exit(1);

	{
	  FILE *f;
	  long now;
	  char linecopy[512];
	  char *c;

	  if ((f = fopen(logfile, "a")) != NULL) {
	    now = time(0);
	    strcpy (linecopy, line);
	    if (c = (char *) rindex(line, 012)) *c = 0;
	    if (c = (char *) rindex(line, 015)) *c = 0;
	    fprintf(f, "%s\t%s\t%s", inet_ntoa(sin.sin_addr), line, ctime(&now));
	    fclose(f);
	  }
	}

	sp = line;
	av[0] = "finger";
	for (i = 1;;) {
		while (isspace(*sp))
			sp++;
		if (!*sp)
			break;
		if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
			sp += 2;
			av[i++] = "-l";
		}
		if (*sp && !isspace(*sp)) {
			av[i++] = sp;
			while (*sp && !isspace(*sp))
				sp++;
			*sp = '\0';
		}
	}
	av[i] = 0;
	if (pipe(p) < 0)
		fatal(argv[0], "pipe");
	fflush(stdout);
	if ((pid = fork()) == 0) {
		close(p[0]);
		if (p[1] != 1) {
			dup2(p[1], 1);
			close(p[1]);
		}
		execv("/site/usr/etc/fingr", av); /* try this first */
		perror("execv");
		_exit(1);
	}
	if (pid == -1)
		fatal(argv[0], "fork");
	close(p[1]);
	if ((fp = fdopen(p[0], "r")) == NULL)
		fatal(argv[0], "fdopen");
	while ((i = getc(fp)) != EOF) {
		if (i == '\n')
			putchar('\r');
		putchar(i);
	}
	fclose(fp);
	while ((i = wait(&status)) != pid && i != -1)
		;
	return(0);
}

fatal(prog, s)
	char *prog, *s;
{
	fprintf(stderr, "%s: ", prog);
	perror(s);
	exit(1);
}