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/*
* Copyright (c) 1999 Dug Song. All rights reserved.
* Copyright (c) 2002 Markus Friedl. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "includes.h"
#include "uuencode.h"
RCSID("$OpenBSD: radix.c,v 1.21 2002/06/19 00:27:55 deraadt Exp $");
#ifdef AFS
#include <krb.h>
#include <radix.h>
#include "bufaux.h"
int
creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen)
{
Buffer b;
int ret;
buffer_init(&b);
buffer_put_char(&b, 1); /* version */
buffer_append(&b, creds->service, strlen(creds->service));
buffer_put_char(&b, '\0');
buffer_append(&b, creds->instance, strlen(creds->instance));
buffer_put_char(&b, '\0');
buffer_append(&b, creds->realm, strlen(creds->realm));
buffer_put_char(&b, '\0');
buffer_append(&b, creds->pname, strlen(creds->pname));
buffer_put_char(&b, '\0');
buffer_append(&b, creds->pinst, strlen(creds->pinst));
buffer_put_char(&b, '\0');
/* Null string to repeat the realm. */
buffer_put_char(&b, '\0');
buffer_put_int(&b, creds->issue_date);
buffer_put_int(&b, krb_life_to_time(creds->issue_date,
creds->lifetime));
buffer_append(&b, creds->session, sizeof(creds->session));
buffer_put_short(&b, creds->kvno);
/* 32 bit size + data */
buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length);
ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen);
buffer_free(&b);
return ret;
}
#define GETSTRING(b, t, tlen) \
do { \
int i, found = 0; \
for (i = 0; i < tlen; i++) { \
if (buffer_len(b) == 0) \
goto done; \
t[i] = buffer_get_char(b); \
if (t[i] == '\0') { \
found = 1; \
break; \
} \
} \
if (!found) \
goto done; \
} while(0)
int
radix_to_creds(const char *buf, CREDENTIALS *creds)
{
Buffer b;
char c, version, *space, *p;
u_int endTime;
int len, blen, ret;
ret = 0;
blen = strlen(buf);
/* sanity check for size */
if (blen > 8192)
return 0;
buffer_init(&b);
space = buffer_append_space(&b, blen);
/* check version and length! */
len = uudecode(buf, space, blen);
if (len < 1)
goto done;
version = buffer_get_char(&b);
GETSTRING(&b, creds->service, sizeof creds->service);
GETSTRING(&b, creds->instance, sizeof creds->instance);
GETSTRING(&b, creds->realm, sizeof creds->realm);
GETSTRING(&b, creds->pname, sizeof creds->pname);
GETSTRING(&b, creds->pinst, sizeof creds->pinst);
if (buffer_len(&b) == 0)
goto done;
/* Ignore possibly different realm. */
while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0')
;
if (buffer_len(&b) == 0)
goto done;
creds->issue_date = buffer_get_int(&b);
endTime = buffer_get_int(&b);
creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
len = buffer_len(&b);
if (len < sizeof(creds->session))
goto done;
memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session));
buffer_consume(&b, sizeof(creds->session));
creds->kvno = buffer_get_short(&b);
p = buffer_get_string(&b, &len);
if (len < 0 || len > sizeof(creds->ticket_st.dat))
goto done;
memcpy(&creds->ticket_st.dat, p, len);
creds->ticket_st.length = len;
ret = 1;
done:
buffer_free(&b);
return ret;
}
#endif /* AFS */
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