159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/* $NetBSD: radix.c,v 1.9 2002/06/24 05:48:32 itojun Exp $ */
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/*
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* Copyright (c) 1999 Dug Song. All rights reserved.
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* Copyright (c) 2002 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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#include "uuencode.h"
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RCSID("$OpenBSD: radix.c,v 1.21 2002/06/19 00:27:55 deraadt Exp $");
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#ifdef AFS
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#include <krb.h>
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#include <radix.h>
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#include "bufaux.h"
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int
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creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen)
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{
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Buffer b;
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int ret;
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buffer_init(&b);
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buffer_put_char(&b, 1); /* version */
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buffer_append(&b, creds->service, strlen(creds->service));
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buffer_put_char(&b, '\0');
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buffer_append(&b, creds->instance, strlen(creds->instance));
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buffer_put_char(&b, '\0');
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buffer_append(&b, creds->realm, strlen(creds->realm));
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buffer_put_char(&b, '\0');
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buffer_append(&b, creds->pname, strlen(creds->pname));
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buffer_put_char(&b, '\0');
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buffer_append(&b, creds->pinst, strlen(creds->pinst));
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buffer_put_char(&b, '\0');
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/* Null string to repeat the realm. */
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buffer_put_char(&b, '\0');
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buffer_put_int(&b, creds->issue_date);
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buffer_put_int(&b, krb_life_to_time(creds->issue_date,
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creds->lifetime));
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buffer_append(&b, creds->session, sizeof(creds->session));
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buffer_put_short(&b, creds->kvno);
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/* 32 bit size + data */
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buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length);
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ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen);
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buffer_free(&b);
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return ret;
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}
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#define GETSTRING(b, t, tlen) \
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do { \
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int i, found = 0; \
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for (i = 0; i < tlen; i++) { \
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if (buffer_len(b) == 0) \
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goto done; \
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t[i] = buffer_get_char(b); \
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if (t[i] == '\0') { \
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found = 1; \
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break; \
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} \
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} \
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if (!found) \
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goto done; \
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} while(0)
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int
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radix_to_creds(const char *buf, CREDENTIALS *creds)
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{
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Buffer b;
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char c, version, *space, *p;
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u_int endTime;
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int len, blen, ret;
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ret = 0;
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blen = strlen(buf);
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/* sanity check for size */
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if (blen > 8192)
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return 0;
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buffer_init(&b);
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space = buffer_append_space(&b, blen);
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/* check version and length! */
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len = uudecode(buf, space, blen);
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if (len < 1)
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goto done;
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version = buffer_get_char(&b);
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GETSTRING(&b, creds->service, sizeof creds->service);
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GETSTRING(&b, creds->instance, sizeof creds->instance);
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GETSTRING(&b, creds->realm, sizeof creds->realm);
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GETSTRING(&b, creds->pname, sizeof creds->pname);
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GETSTRING(&b, creds->pinst, sizeof creds->pinst);
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if (buffer_len(&b) == 0)
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goto done;
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/* Ignore possibly different realm. */
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while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0')
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;
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if (buffer_len(&b) == 0)
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goto done;
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creds->issue_date = buffer_get_int(&b);
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endTime = buffer_get_int(&b);
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creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
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len = buffer_len(&b);
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if (len < sizeof(creds->session))
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goto done;
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memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session));
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buffer_consume(&b, sizeof(creds->session));
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creds->kvno = buffer_get_short(&b);
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p = buffer_get_string(&b, &len);
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if (len < 0 || len > sizeof(creds->ticket_st.dat))
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goto done;
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memcpy(&creds->ticket_st.dat, p, len);
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creds->ticket_st.length = len;
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ret = 1;
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done:
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buffer_free(&b);
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return ret;
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}
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#endif /* AFS */
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