155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1995, 1996, 1997, 1998 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.
|
|
*/
|
|
|
|
/* Almost all programs use these routines (implicitly) so it's a good
|
|
* place to put the version string. */
|
|
|
|
#define __KRB4_VERSION
|
|
#include "version.h"
|
|
|
|
#include "krb_locl.h"
|
|
|
|
RCSID("$Id: rw.c,v 1.2 2000/07/15 00:40:37 thorpej Exp $");
|
|
|
|
int
|
|
krb_get_int(void *f, u_int32_t *to, int size, int lsb)
|
|
{
|
|
int i;
|
|
unsigned char *from = (unsigned char *)f;
|
|
|
|
*to = 0;
|
|
if(lsb){
|
|
for(i = size-1; i >= 0; i--)
|
|
*to = (*to << 8) | from[i];
|
|
}else{
|
|
for(i = 0; i < size; i++)
|
|
*to = (*to << 8) | from[i];
|
|
}
|
|
return size;
|
|
}
|
|
|
|
int
|
|
krb_put_int(u_int32_t from, void *to, size_t rem, int size)
|
|
{
|
|
int i;
|
|
unsigned char *p = (unsigned char *)to;
|
|
|
|
if (rem < size)
|
|
return -1;
|
|
|
|
for(i = size - 1; i >= 0; i--){
|
|
p[i] = from & 0xff;
|
|
from >>= 8;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
|
|
/* addresses are always sent in network byte order */
|
|
|
|
int
|
|
krb_get_address(void *from, u_int32_t *to)
|
|
{
|
|
unsigned char *p = (unsigned char*)from;
|
|
*to = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
|
|
return 4;
|
|
}
|
|
|
|
int
|
|
krb_put_address(u_int32_t addr, void *to, size_t rem)
|
|
{
|
|
return krb_put_int(ntohl(addr), to, rem, 4);
|
|
}
|
|
|
|
int
|
|
krb_put_string(const char *from, void *to, size_t rem)
|
|
{
|
|
size_t len = strlen(from) + 1;
|
|
|
|
if (rem < len)
|
|
return -1;
|
|
memcpy(to, from, len);
|
|
return len;
|
|
}
|
|
|
|
int
|
|
krb_get_string(void *from, char *to, size_t to_size)
|
|
{
|
|
strlcpy (to, (char *)from, to_size);
|
|
return strlen((char *)from) + 1;
|
|
}
|
|
|
|
int
|
|
krb_get_nir(void *from, char *name, char *instance, char *realm)
|
|
{
|
|
char *p = (char *)from;
|
|
|
|
p += krb_get_string(p, name, ANAME_SZ);
|
|
p += krb_get_string(p, instance, INST_SZ);
|
|
if(realm)
|
|
p += krb_get_string(p, realm, REALM_SZ);
|
|
return p - (char *)from;
|
|
}
|
|
|
|
int
|
|
krb_put_nir(const char *name,
|
|
const char *instance,
|
|
const char *realm,
|
|
void *to,
|
|
size_t rem)
|
|
{
|
|
char *p = (char *)to;
|
|
int tmp;
|
|
|
|
tmp = krb_put_string(name, p, rem);
|
|
if (tmp < 0)
|
|
return tmp;
|
|
p += tmp;
|
|
rem -= tmp;
|
|
|
|
tmp = krb_put_string(instance, p, rem);
|
|
if (tmp < 0)
|
|
return tmp;
|
|
p += tmp;
|
|
rem -= tmp;
|
|
|
|
if (realm) {
|
|
tmp = krb_put_string(realm, p, rem);
|
|
if (tmp < 0)
|
|
return tmp;
|
|
p += tmp;
|
|
rem -= tmp;
|
|
}
|
|
return p - (char *)to;
|
|
}
|