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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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#pragma weak run_setkey = _run_setkey
#pragma weak run_crypt = _run_crypt
#pragma weak crypt_close = _crypt_close
#pragma weak makekey = _makekey
#include "synonyms.h"
#include "mtlib.h"
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <thread.h>
#include <sys/types.h>
#include <unistd.h>
#include <strings.h>
#include <crypt.h>
#include "des_soft.h"
#include "lib_gen.h"
#define READER 0
#define WRITER 1
#define KSIZE 8
/* Global Variables */
static char key[KSIZE+1];
struct header {
long offset;
unsigned int count;
};
static mutex_t lock = DEFAULTMUTEX;
static int cryptopen();
static int writekey();
void _exit();
int
run_setkey(int p[2], const char *keyparam)
{
(void) mutex_lock(&lock);
if (cryptopen(p) == -1) {
(void) mutex_unlock(&lock);
return (-1);
}
(void) strncpy(key, keyparam, KSIZE);
if (*key == 0) {
(void) crypt_close_nolock(p);
(void) mutex_unlock(&lock);
return (0);
}
if (writekey(p, key) == -1) {
(void) mutex_unlock(&lock);
return (-1);
}
(void) mutex_unlock(&lock);
return (1);
}
static char cmd[] = "exec /usr/bin/crypt -p 2>/dev/null";
static int
cryptopen(int p[2])
{
char c;
if (__p2open(cmd, p) < 0)
return (-1);
if (read(p[WRITER], &c, 1) != 1) { /* check that crypt is working on */
/* other end */
(void) crypt_close(p); /* remove defunct process */
return (-1);
}
return (1);
}
static int
writekey(int p[2], char *keyarg)
{
void (*pstat) ();
pstat = signal(SIGPIPE, SIG_IGN); /* don't want pipe errors to cause */
/* death */
if (write(p[READER], keyarg, KSIZE) != KSIZE) {
(void) crypt_close(p); /* remove defunct process */
(void) signal(SIGPIPE, pstat);
return (-1);
}
(void) signal(SIGPIPE, pstat);
return (1);
}
int
run_crypt(long offset, char *buffer, unsigned int count, int p[2])
{
struct header header;
void (*pstat) ();
(void) mutex_lock(&lock);
header.count = count;
header.offset = offset;
pstat = signal(SIGPIPE, SIG_IGN);
if (write(p[READER], (char *)&header, sizeof (header))
!= sizeof (header)) {
(void) crypt_close_nolock(p);
(void) signal(SIGPIPE, pstat);
(void) mutex_unlock(&lock);
return (-1);
}
if (write(p[READER], buffer, count) < count) {
(void) crypt_close_nolock(p);
(void) signal(SIGPIPE, pstat);
(void) mutex_unlock(&lock);
return (-1);
}
if (read(p[WRITER], buffer, count) < count) {
(void) crypt_close_nolock(p);
(void) signal(SIGPIPE, pstat);
(void) mutex_unlock(&lock);
return (-1);
}
(void) signal(SIGPIPE, pstat);
(void) mutex_unlock(&lock);
return (0);
}
int
makekey(int b[2])
{
int i;
long gorp;
char tempbuf[KSIZE], *a, *temp;
(void) mutex_lock(&lock);
a = key;
temp = tempbuf;
for (i = 0; i < KSIZE; i++)
temp[i] = *a++;
gorp = getuid() + getgid();
for (i = 0; i < 4; i++)
temp[i] ^= (char)((gorp>>(8*i))&0377);
if (cryptopen(b) == -1) {
(void) mutex_unlock(&lock);
return (-1);
}
if (writekey(b, temp) == -1) {
(void) mutex_unlock(&lock);
return (-1);
}
(void) mutex_unlock(&lock);
return (0);
}
int
crypt_close_nolock(int p[2])
{
if (p[0] == 0 && p[1] == 0 || p[0] < 0 || p[1] < 0) {
return (-1);
}
return (__p2close(p, NULL, SIGKILL));
}
int
crypt_close(int p[2])
{
(void) mutex_lock(&lock);
(void) crypt_close_nolock(p);
(void) mutex_unlock(&lock);
return (0);
}
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