mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-03 23:28:57 +00:00
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "kauth.h"
|
|
|
|
RCSID("$Id: encdata.c,v 1.10 1999/12/02 16:58:31 joda Exp $");
|
|
|
|
int
|
|
write_encrypted (int fd, void *buf, size_t len, des_key_schedule schedule,
|
|
des_cblock *session, struct sockaddr_in *me,
|
|
struct sockaddr_in *him)
|
|
{
|
|
void *outbuf;
|
|
int32_t outlen, l;
|
|
int i;
|
|
unsigned char tmp[4];
|
|
|
|
outbuf = malloc(len + 30);
|
|
if (outbuf == NULL)
|
|
return -1;
|
|
outlen = krb_mk_priv (buf, outbuf, len, schedule, session, me, him);
|
|
if (outlen < 0) {
|
|
free(outbuf);
|
|
return -1;
|
|
}
|
|
l = outlen;
|
|
for(i = 3; i >= 0; i--, l = l >> 8)
|
|
tmp[i] = l & 0xff;
|
|
if (krb_net_write (fd, tmp, 4) != 4 ||
|
|
krb_net_write (fd, outbuf, outlen) != outlen) {
|
|
free(outbuf);
|
|
return -1;
|
|
}
|
|
|
|
free(outbuf);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
read_encrypted (int fd, void *buf, size_t len, void **ret,
|
|
des_key_schedule schedule, des_cblock *session,
|
|
struct sockaddr_in *him, struct sockaddr_in *me)
|
|
{
|
|
int status;
|
|
int32_t l;
|
|
MSG_DAT msg;
|
|
unsigned char tmp[4];
|
|
|
|
l = krb_net_read (fd, tmp, 4);
|
|
if (l != 4)
|
|
return l;
|
|
l = (tmp[0] << 24) | (tmp[1] << 16) | (tmp[2] << 8) | tmp[3];
|
|
if (l > len)
|
|
return -1;
|
|
if (krb_net_read (fd, buf, l) != l)
|
|
return -1;
|
|
status = krb_rd_priv (buf, l, schedule, session, him, me, &msg);
|
|
if (status != RD_AP_OK) {
|
|
fprintf (stderr, "read_encrypted: %s\n",
|
|
krb_get_err_text(status));
|
|
return -1;
|
|
}
|
|
*ret = msg.app_data;
|
|
return msg.app_length;
|
|
}
|