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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Finger server.
*/
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <stdio.h>
#include <ctype.h>
#define MAXARGS 10
void fatal(char *prog, char *s);
int
main(argc, argv)
int argc;
char *argv[];
{
register char *sp;
char line[512];
struct sockaddr_storage sin;
pid_t pid, w;
int i, p[2], status;
FILE *fp;
char *av[MAXARGS + 1];
i = sizeof (sin);
if (getpeername(0, (struct sockaddr *)&sin, &i) < 0)
fatal(argv[0], "getpeername");
line[0] = '\0';
if (fgets(line, sizeof (line), stdin) == NULL)
exit(1);
sp = line;
av[0] = "finger";
i = 1;
/* skip past leading white space */
while (isspace(*sp))
sp++;
/*
* The finger protocol says a "/W" switch means verbose output.
* We explicitly set either the "long" or "short" output flags
* to the finger program so that we don't have to know what what
* the "finger" program's default is.
*/
if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
sp += 2;
av[i++] = "-l";
} else {
av[i++] = "-s";
}
/* look for username arguments */
while (i < MAXARGS) {
/* skip over leading white space */
while (isspace(*sp))
sp++;
/* check for end of "command line" */
if (*sp == '\0')
break;
/* pick up another name argument */
av[i++] = sp;
while ((*sp != '\0') && !isspace(*sp))
sp++;
/* check again for end of "command line" */
if (*sp == '\0')
break;
else
*sp++ = '\0';
}
av[i] = (char *)0;
if (pipe(p) < 0)
fatal(argv[0], "pipe");
if ((pid = fork()) == 0) {
close(p[0]);
if (p[1] != 1) {
dup2(p[1], 1);
close(p[1]);
}
execv("/usr/bin/finger", av);
printf("No local finger program found\n");
fflush(stdout);
_exit(1);
}
if (pid == (pid_t)-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 ((w = wait(&status)) != pid && w != (pid_t)-1)
;
return (0);
}
void
fatal(prog, s)
char *prog, *s;
{
fprintf(stderr, "%s: ", prog);
perror(s);
exit(1);
}
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